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-rw-r--r--daemon/Makefile.am11
-rw-r--r--daemon/bsnmp/Makefile.am4
-rw-r--r--daemon/bsnmp/asn1.c1000
-rw-r--r--daemon/bsnmp/asn1.h183
-rw-r--r--daemon/bsnmp/snmp.c1081
-rw-r--r--daemon/bsnmp/snmp.h174
-rw-r--r--daemon/bsnmp/snmppriv.h45
-rw-r--r--daemon/common/hash.c380
-rw-r--r--daemon/common/hash.h151
-rw-r--r--daemon/common/server-mainloop.c424
-rw-r--r--daemon/common/server-mainloop.h27
-rw-r--r--daemon/common/sock-any.c385
-rw-r--r--daemon/common/sock-any.h90
-rw-r--r--daemon/common/stringx.c155
-rw-r--r--daemon/common/stringx.h53
-rw-r--r--daemon/config.c575
-rw-r--r--daemon/rrd-update.c134
-rw-r--r--daemon/rrdbotd.c239
-rw-r--r--daemon/rrdbotd.h182
-rw-r--r--daemon/snmp-engine.c636
-rw-r--r--daemon/snmp-help.c111
-rw-r--r--daemon/snmpclient.c967
-rw-r--r--daemon/snmpclient.h187
-rw-r--r--daemon/usuals.h77
24 files changed, 7271 insertions, 0 deletions
diff --git a/daemon/Makefile.am b/daemon/Makefile.am
new file mode 100644
index 0000000..fa8144a
--- /dev/null
+++ b/daemon/Makefile.am
@@ -0,0 +1,11 @@
+SUBDIRS = bsnmp
+
+sbin_PROGRAMS = rrdbotd
+
+rrdbotd_SOURCES = rrdbotd.c rrdbotd.h config.c \
+ snmp-help.c snmp-engine.c rrd-update.c \
+ common/server-mainloop.c common/server-mainloop.h \
+ common/sock-any.h common/sock-any.c \
+ usuals.h common/stringx.h common/stringx.c common/hash.h common/hash.c
+rrdbotd_CFLAGS = -I${top_srcdir}/src/common/ -I${top_srcdir} -Ibsnmp
+rrdbotd_LDADD = $(top_builddir)/src/bsnmp/libbsnmp-custom.a
diff --git a/daemon/bsnmp/Makefile.am b/daemon/bsnmp/Makefile.am
new file mode 100644
index 0000000..7a7a739
--- /dev/null
+++ b/daemon/bsnmp/Makefile.am
@@ -0,0 +1,4 @@
+
+noinst_LIBRARIES = libbsnmp-custom.a
+libbsnmp_custom_a_SOURCES = asn1.c asn1.h snmp.c snmp.h snmppriv.h
+
diff --git a/daemon/bsnmp/asn1.c b/daemon/bsnmp/asn1.c
new file mode 100644
index 0000000..8a206ee
--- /dev/null
+++ b/daemon/bsnmp/asn1.c
@@ -0,0 +1,1000 @@
+/*
+ * Copyright (c) 2001-2003
+ * Fraunhofer Institute for Open Communication Systems (FhG Fokus).
+ * All rights reserved.
+ *
+ * Author: Harti Brandt <harti@freebsd.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $Begemot: bsnmp/lib/asn1.c,v 1.28 2004/08/06 08:46:49 brandt Exp $
+ *
+ * ASN.1 for SNMP.
+ */
+#include <sys/types.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdarg.h>
+#include <string.h>
+#include <stdint.h>
+#include <assert.h>
+#include "asn1.h"
+
+static void asn_error_func(const struct asn_buf *, const char *, ...);
+
+void (*asn_error)(const struct asn_buf *, const char *, ...) = asn_error_func;
+
+/*
+ * Read the next header. This reads the tag (note, that only single
+ * byte tags are supported for now) and the length field. The length field
+ * is restricted to a 32-bit value.
+ * All errors of this function stop the decoding.
+ */
+enum asn_err
+asn_get_header(struct asn_buf *b, u_char *type, asn_len_t *len)
+{
+ u_int length;
+
+ if (b->asn_len == 0) {
+ asn_error(b, "no identifier for header");
+ return (ASN_ERR_EOBUF);
+ }
+ *type = *b->asn_cptr;
+ if ((*type & ASN_TYPE_MASK) > 0x30) {
+ asn_error(b, "types > 0x30 not supported (%u)",
+ *type & ASN_TYPE_MASK);
+ return (ASN_ERR_FAILED);
+ }
+ b->asn_cptr++;
+ b->asn_len--;
+ if (b->asn_len == 0) {
+ asn_error(b, "no length field");
+ return (ASN_ERR_EOBUF);
+ }
+ if (*b->asn_cptr & 0x80) {
+ length = *b->asn_cptr++ & 0x7f;
+ b->asn_len--;
+ if (length == 0) {
+ asn_error(b, "indefinite length not supported");
+ return (ASN_ERR_FAILED);
+ }
+ if (length > ASN_MAXLENLEN) {
+ asn_error(b, "long length too long (%u)", length);
+ return (ASN_ERR_FAILED);
+ }
+ if (length > b->asn_len) {
+ asn_error(b, "long length truncated");
+ return (ASN_ERR_EOBUF);
+ }
+ *len = 0;
+ while (length--) {
+ *len = (*len << 8) | *b->asn_cptr++;
+ b->asn_len--;
+ }
+ } else {
+ *len = *b->asn_cptr++;
+ b->asn_len--;
+ }
+ return (ASN_ERR_OK);
+}
+
+/*
+ * Write a length field (restricted to values < 2^32-1) and return the
+ * number of bytes this field takes. If ptr is NULL, the length is computed
+ * but nothing is written. If the length would be too large return 0.
+ */
+static u_int
+asn_put_len(u_char *ptr, asn_len_t len)
+{
+ u_int lenlen, lenlen1;
+ asn_len_t tmp;
+
+ if (len > ASN_MAXLEN) {
+ asn_error(NULL, "encoding length too long: (%u)", len);
+ return (0);
+ }
+
+ if (len <= 127) {
+ if (ptr)
+ *ptr++ = (u_char)len;
+ return (1);
+ } else {
+ lenlen = 0;
+ /* compute number of bytes for value (is at least 1) */
+ for (tmp = len; tmp != 0; tmp >>= 8)
+ lenlen++;
+ if (ptr != NULL) {
+ *ptr++ = (u_char)lenlen | 0x80;
+ lenlen1 = lenlen;
+ while (lenlen1-- > 0) {
+ ptr[lenlen1] = len & 0xff;
+ len >>= 8;
+ }
+ }
+ return (lenlen + 1);
+ }
+}
+
+/*
+ * Write a header (tag and length fields).
+ * Tags are restricted to one byte tags (value <= 0x30) and the
+ * lenght field to 16-bit. All errors stop the encoding.
+ */
+enum asn_err
+asn_put_header(struct asn_buf *b, u_char type, asn_len_t len)
+{
+ u_int lenlen;
+
+ /* tag field */
+ if ((type & ASN_TYPE_MASK) > 0x30) {
+ asn_error(NULL, "types > 0x30 not supported (%u)",
+ type & ASN_TYPE_MASK);
+ return (ASN_ERR_FAILED);
+ }
+ if (b->asn_len == 0)
+ return (ASN_ERR_EOBUF);
+
+ *b->asn_ptr++ = type;
+ b->asn_len--;
+
+ /* length field */
+ if ((lenlen = asn_put_len(NULL, len)) == 0)
+ return (ASN_ERR_FAILED);
+ if (b->asn_len < lenlen)
+ return (ASN_ERR_EOBUF);
+
+ (void)asn_put_len(b->asn_ptr, len);
+ b->asn_ptr += lenlen;
+ b->asn_len -= lenlen;
+ return (ASN_ERR_OK);
+}
+
+
+/*
+ * This constructs a temporary sequence header with space for the maximum
+ * length field (three byte). Set the pointer that ptr points to to the
+ * start of the encoded header. This is used for a later call to
+ * asn_commit_header which will fix-up the length field and move the
+ * value if needed. All errors should stop the encoding.
+ */
+#define TEMP_LEN (1 + ASN_MAXLENLEN + 1)
+enum asn_err
+asn_put_temp_header(struct asn_buf *b, u_char type, u_char **ptr)
+{
+ int ret;
+
+ if (b->asn_len < TEMP_LEN)
+ return (ASN_ERR_EOBUF);
+ *ptr = b->asn_ptr;
+ if ((ret = asn_put_header(b, type, ASN_MAXLEN)) == ASN_ERR_OK)
+ assert(b->asn_ptr == *ptr + TEMP_LEN);
+ return (ret);
+}
+enum asn_err
+asn_commit_header(struct asn_buf *b, u_char *ptr)
+{
+ asn_len_t len;
+ u_int lenlen, shift;
+
+ /* compute length of encoded value without header */
+ len = b->asn_ptr - (ptr + TEMP_LEN);
+
+ /* insert length. may not fail. */
+ lenlen = asn_put_len(ptr + 1, len);
+ if (lenlen > TEMP_LEN - 1)
+ return (ASN_ERR_FAILED);
+
+ if (lenlen < TEMP_LEN - 1) {
+ /* shift value down */
+ shift = (TEMP_LEN - 1) - lenlen;
+ memmove(ptr + 1 + lenlen, ptr + TEMP_LEN, len);
+ b->asn_ptr -= shift;
+ b->asn_len += shift;
+ }
+ return (ASN_ERR_OK);
+}
+#undef TEMP_LEN
+
+/*
+ * BER integer. This may be used to get a signed 64 bit integer at maximum.
+ * The maximum length should be checked by the caller. This cannot overflow
+ * if the caller ensures that len is at maximum 8.
+ *
+ * <bytes>
+ */
+static enum asn_err
+asn_get_real_integer(struct asn_buf *b, asn_len_t len, int64_t *vp)
+{
+ uint64_t val;
+ int neg = 0;
+ enum asn_err err;
+
+ if (b->asn_len < len) {
+ asn_error(b, "truncated integer");
+ return (ASN_ERR_EOBUF);
+ }
+ if (len == 0) {
+ asn_error(b, "zero-length integer");
+ *vp = 0;
+ return (ASN_ERR_BADLEN);
+ }
+ err = ASN_ERR_OK;
+ if (len > 8)
+ err = ASN_ERR_RANGE;
+ else if (len > 1 &&
+ ((*b->asn_cptr == 0x00 && (b->asn_cptr[1] & 0x80) == 0) ||
+ (*b->asn_cptr == 0xff && (b->asn_cptr[1] & 0x80) == 0x80))) {
+ asn_error(b, "non-minimal integer");
+ err = ASN_ERR_BADLEN;
+ }
+
+ if (*b->asn_cptr & 0x80)
+ neg = 1;
+ val = 0;
+ while (len--) {
+ val <<= 8;
+ val |= neg ? (u_char)~*b->asn_cptr : *b->asn_cptr;
+ b->asn_len--;
+ b->asn_cptr++;
+ }
+ if (neg) {
+ *vp = -(int64_t)val - 1;
+ } else
+ *vp = (int64_t)val;
+ return (err);
+}
+
+/*
+ * Write a signed integer with the given type. The caller has to ensure
+ * that the actual value is ok for this type.
+ */
+static enum asn_err
+asn_put_real_integer(struct asn_buf *b, u_char type, int64_t ival)
+{
+ int i, neg = 0;
+# define OCTETS 8
+ u_char buf[OCTETS];
+ uint64_t val;
+ enum asn_err ret;
+
+ if (ival < 0) {
+ /* this may fail if |INT64_MIN| > |INT64_MAX| and
+ * the value is between * INT64_MIN <= ival < -(INT64_MAX+1) */
+ val = (uint64_t)-(ival + 1);
+ neg = 1;
+ } else
+ val = (uint64_t)ival;
+
+ /* split the value into octets */
+ for (i = OCTETS - 1; i >= 0; i--) {
+ buf[i] = val & 0xff;
+ if (neg)
+ buf[i] = ~buf[i];
+ val >>= 8;
+ }
+ /* no leading 9 zeroes or ones */
+ for (i = 0; i < OCTETS - 1; i++)
+ if (!((buf[i] == 0xff && (buf[i + 1] & 0x80) != 0) ||
+ (buf[i] == 0x00 && (buf[i + 1] & 0x80) == 0)))
+ break;
+ if ((ret = asn_put_header(b, type, OCTETS - i)))
+ return (ret);
+ if (OCTETS - (u_int)i > b->asn_len)
+ return (ASN_ERR_EOBUF);
+
+ while (i < OCTETS) {
+ *b->asn_ptr++ = buf[i++];
+ b->asn_len--;
+ }
+ return (ASN_ERR_OK);
+# undef OCTETS
+}
+
+
+/*
+ * The same for unsigned 64-bitters. Here we have the problem, that overflow
+ * can happen, because the value maybe 9 bytes long. In this case the
+ * first byte must be 0.
+ */
+static enum asn_err
+asn_get_real_unsigned(struct asn_buf *b, asn_len_t len, uint64_t *vp)
+{
+ enum asn_err err;
+
+ if (b->asn_len < len) {
+ asn_error(b, "truncated integer");
+ return (ASN_ERR_EOBUF);
+ }
+ if (len == 0) {
+ asn_error(b, "zero-length integer");
+ *vp = 0;
+ return (ASN_ERR_BADLEN);
+ }
+ err = ASN_ERR_OK;
+ *vp = 0;
+ if ((*b->asn_cptr & 0x80) || (len == 9 && *b->asn_cptr != 0)) {
+ /* negative integer or too larger */
+ *vp = 0xffffffffffffffffULL;
+ err = ASN_ERR_RANGE;
+ } else if (len > 1 &&
+ *b->asn_cptr == 0x00 && (b->asn_cptr[1] & 0x80) == 0) {
+ asn_error(b, "non-minimal unsigned");
+ err = ASN_ERR_BADLEN;
+ }
+
+ while (len--) {
+ *vp = (*vp << 8) | *b->asn_cptr++;
+ b->asn_len--;
+ }
+ return (err);
+}
+
+
+/*
+ * Values with the msb on need 9 octets.
+ */
+static int
+asn_put_real_unsigned(struct asn_buf *b, u_char type, uint64_t val)
+{
+ int i;
+# define OCTETS 9
+ u_char buf[OCTETS];
+ enum asn_err ret;
+
+ /* split the value into octets */
+ for (i = OCTETS - 1; i >= 0; i--) {
+ buf[i] = val & 0xff;
+ val >>= 8;
+ }
+ /* no leading 9 zeroes */
+ for (i = 0; i < OCTETS - 1; i++)
+ if (!(buf[i] == 0x00 && (buf[i + 1] & 0x80) == 0))
+ break;
+ if ((ret = asn_put_header(b, type, OCTETS - i)))
+ return (ret);
+ if (OCTETS - (u_int)i > b->asn_len)
+ return (ASN_ERR_EOBUF);
+
+ while (i < OCTETS) {
+ *b->asn_ptr++ = buf[i++];
+ b->asn_len--;
+ }
+#undef OCTETS
+ return (ASN_ERR_OK);
+}
+
+/*
+ * The ASN.1 INTEGER type is restricted to 32-bit signed by the SMI.
+ */
+enum asn_err
+asn_get_integer_raw(struct asn_buf *b, asn_len_t len, int32_t *vp)
+{
+ int64_t val;
+ enum asn_err ret;
+
+ if ((ret = asn_get_real_integer(b, len, &val)) == ASN_ERR_OK) {
+ if (len > 4)
+ ret = ASN_ERR_BADLEN;
+ else if (val > INT32_MAX || val < INT32_MIN)
+ /* may not happen */
+ ret = ASN_ERR_RANGE;
+ *vp = (int32_t)val;
+ }
+ return (ret);
+}
+
+enum asn_err
+asn_get_integer(struct asn_buf *b, int32_t *vp)
+{
+ asn_len_t len;
+ u_char type;
+ enum asn_err err;
+
+ if ((err = asn_get_header(b, &type, &len)) != ASN_ERR_OK)
+ return (err);
+ if (type != ASN_TYPE_INTEGER) {
+ asn_error(b, "bad type for integer (%u)", type);
+ return (ASN_ERR_TAG);
+ }
+
+ return (asn_get_integer_raw(b, len, vp));
+}
+
+enum asn_err
+asn_put_integer(struct asn_buf *b, int32_t val)
+{
+ return (asn_put_real_integer(b, ASN_TYPE_INTEGER, val));
+}
+
+/*
+ * OCTETSTRING
+ *
+ * <0x04> <len> <data ...>
+ *
+ * Get an octetstring. noctets must point to the buffer size and on
+ * return will contain the size of the octetstring, regardless of the
+ * buffer size.
+ */
+enum asn_err
+asn_get_octetstring_raw(struct asn_buf *b, asn_len_t len, u_char *octets,
+ u_int *noctets)
+{
+ enum asn_err err = ASN_ERR_OK;
+
+ if (*noctets < len) {
+ asn_error(b, "octetstring truncated");
+ err = ASN_ERR_RANGE;
+ }
+ if (b->asn_len < len) {
+ asn_error(b, "truncatet octetstring");
+ return (ASN_ERR_EOBUF);
+ }
+ if (*noctets < len)
+ memcpy(octets, b->asn_cptr, *noctets);
+ else
+ memcpy(octets, b->asn_cptr, len);
+ *noctets = len;
+ b->asn_cptr += len;
+ b->asn_len -= len;
+ return (err);
+}
+
+enum asn_err
+asn_get_octetstring(struct asn_buf *b, u_char *octets, u_int *noctets)
+{
+ enum asn_err err;
+ u_char type;
+ asn_len_t len;
+
+ if ((err = asn_get_header(b, &type, &len)) != ASN_ERR_OK)
+ return (err);
+ if (type != ASN_TYPE_OCTETSTRING) {
+ asn_error(b, "bad type for octetstring (%u)", type);
+ return (ASN_ERR_TAG);
+ }
+ return (asn_get_octetstring_raw(b, len, octets, noctets));
+}
+
+enum asn_err
+asn_put_octetstring(struct asn_buf *b, const u_char *octets, u_int noctets)
+{
+ enum asn_err ret;
+
+ if ((ret = asn_put_header(b, ASN_TYPE_OCTETSTRING, noctets)) != ASN_ERR_OK)
+ return (ret);
+ if (b->asn_len < noctets)
+ return (ASN_ERR_EOBUF);
+
+ memcpy(b->asn_ptr, octets, noctets);
+ b->asn_ptr += noctets;
+ b->asn_len -= noctets;
+ return (ASN_ERR_OK);
+}
+
+/*
+ * NULL
+ *
+ * <0x05> <0x00>
+ */
+enum asn_err
+asn_get_null_raw(struct asn_buf *b, asn_len_t len)
+{
+ if (len != 0) {
+ if (b->asn_len < len) {
+ asn_error(b, "truncated NULL");
+ return (ASN_ERR_EOBUF);
+ }
+ asn_error(b, "bad length for NULL (%u)", len);
+ b->asn_len -= len;
+ b->asn_ptr += len;
+ return (ASN_ERR_BADLEN);
+ }
+ return (ASN_ERR_OK);
+}
+
+enum asn_err
+asn_get_null(struct asn_buf *b)
+{
+ u_char type;
+ asn_len_t len;
+ enum asn_err err;
+
+ if ((err = asn_get_header(b, &type, &len)) != ASN_ERR_OK)
+ return (err);
+ if (type != ASN_TYPE_NULL) {
+ asn_error(b, "bad type for NULL (%u)", type);
+ return (ASN_ERR_TAG);
+ }
+ return (asn_get_null_raw(b, len));
+}
+
+enum asn_err
+asn_put_null(struct asn_buf *b)
+{
+ return (asn_put_header(b, ASN_TYPE_NULL, 0));
+}
+
+enum asn_err
+asn_put_exception(struct asn_buf *b, u_int except)
+{
+ return (asn_put_header(b, ASN_CLASS_CONTEXT | except, 0));
+}
+
+/*
+ * OBJID
+ *
+ * <0x06> <len> <subid...>
+ */
+enum asn_err
+asn_get_objid_raw(struct asn_buf *b, asn_len_t len, struct asn_oid *oid)
+{
+ asn_subid_t subid;
+ enum asn_err err;
+
+ if (b->asn_len < len) {
+ asn_error(b, "truncated OBJID");
+ return (ASN_ERR_EOBUF);
+ }
+ oid->len = 0;
+ if (len == 0) {
+ asn_error(b, "short OBJID");
+ oid->subs[oid->len++] = 0;
+ oid->subs[oid->len++] = 0;
+ return (ASN_ERR_BADLEN);
+ }
+ err = ASN_ERR_OK;
+ while (len != 0) {
+ if (oid->len == ASN_MAXOIDLEN) {
+ asn_error(b, "OID too long (%u)", oid->len);
+ b->asn_cptr += len;
+ b->asn_len -= len;
+ return (ASN_ERR_BADLEN);
+ }
+ subid = 0;
+ do {
+ if (len == 0) {
+ asn_error(b, "unterminated subid");
+ return (ASN_ERR_EOBUF);
+ }
+ if (subid > (ASN_MAXID >> 7)) {
+ asn_error(b, "OBID subid too larger");
+ err = ASN_ERR_RANGE;
+ }
+ subid = (subid << 7) | (*b->asn_cptr & 0x7f);
+ len--;
+ b->asn_len--;
+ } while (*b->asn_cptr++ & 0x80);
+ if (oid->len == 0) {
+ if (subid < 80) {
+ oid->subs[oid->len++] = subid / 40;
+ oid->subs[oid->len++] = subid % 40;
+ } else {
+ oid->subs[oid->len++] = 2;
+ oid->subs[oid->len++] = subid - 80;
+ }
+ } else {
+ oid->subs[oid->len++] = subid;
+ }
+ }
+ return (err);
+
+}
+
+enum asn_err
+asn_get_objid(struct asn_buf *b, struct asn_oid *oid)
+{
+ u_char type;
+ asn_len_t len;
+ enum asn_err err;
+
+ if ((err = asn_get_header(b, &type, &len)) != ASN_ERR_OK)
+ return (err);
+ if (type != ASN_TYPE_OBJID) {
+ asn_error(b, "bad type for OBJID (%u)", type);
+ return (ASN_ERR_TAG);
+ }
+ return (asn_get_objid_raw(b, len, oid));
+}
+
+enum asn_err
+asn_put_objid(struct asn_buf *b, const struct asn_oid *oid)
+{
+ asn_subid_t first, sub;
+ enum asn_err err, err1;
+ u_int i, oidlen;
+ asn_len_t len;
+
+ err = ASN_ERR_OK;
+ if (oid->len == 0) {
+ /* illegal */
+ asn_error(NULL, "short oid");
+ err = ASN_ERR_RANGE;
+ first = 0;
+ oidlen = 2;
+ } else if (oid->len == 1) {
+ /* illegal */
+ asn_error(b, "short oid");
+ if (oid->subs[0] > 2)
+ asn_error(NULL, "oid[0] too large (%u)", oid->subs[0]);
+ err = ASN_ERR_RANGE;
+ first = oid->subs[0] * 40;
+ oidlen = 2;
+ } else {
+ if (oid->len > ASN_MAXOIDLEN) {
+ asn_error(NULL, "oid too long %u", oid->len);
+ err = ASN_ERR_RANGE;
+ }
+ if (oid->subs[0] > 2 ||
+ (oid->subs[0] < 2 && oid->subs[0] >= 40)) {
+ asn_error(NULL, "oid out of range (%u,%u)",
+ oid->subs[0], oid->subs[1]);
+ err = ASN_ERR_RANGE;
+ }
+ first = 40 * oid->subs[0] + oid->subs[1];
+ oidlen = oid->len;
+ }
+ len = 0;
+ for (i = 1; i < oidlen; i++) {
+ sub = (i == 1) ? first : oid->subs[i];
+ if (sub > ASN_MAXID) {
+ asn_error(NULL, "oid subid too large");
+ err = ASN_ERR_RANGE;
+ }
+ len += (sub <= 0x7f) ? 1
+ : (sub <= 0x3fff) ? 2
+ : (sub <= 0x1fffff) ? 3
+ : (sub <= 0xfffffff) ? 4
+ : 5;
+ }
+ if ((err1 = asn_put_header(b, ASN_TYPE_OBJID, len)) != ASN_ERR_OK)
+ return (err1);
+ if (b->asn_len < len)
+ return (ASN_ERR_EOBUF);
+
+ for (i = 1; i < oidlen; i++) {
+ sub = (i == 1) ? first : oid->subs[i];
+ if (sub <= 0x7f) {
+ *b->asn_ptr++ = sub;
+ b->asn_len--;
+ } else if (sub <= 0x3fff) {
+ *b->asn_ptr++ = (sub >> 7) | 0x80;
+ *b->asn_ptr++ = sub & 0x7f;
+ b->asn_len -= 2;
+ } else if (sub <= 0x1fffff) {
+ *b->asn_ptr++ = (sub >> 14) | 0x80;
+ *b->asn_ptr++ = ((sub >> 7) & 0x7f) | 0x80;
+ *b->asn_ptr++ = sub & 0x7f;
+ b->asn_len -= 3;
+ } else if (sub <= 0xfffffff) {
+ *b->asn_ptr++ = (sub >> 21) | 0x80;
+ *b->asn_ptr++ = ((sub >> 14) & 0x7f) | 0x80;
+ *b->asn_ptr++ = ((sub >> 7) & 0x7f) | 0x80;
+ *b->asn_ptr++ = sub & 0x7f;
+ b->asn_len -= 4;
+ } else {
+ *b->asn_ptr++ = (sub >> 28) | 0x80;
+ *b->asn_ptr++ = ((sub >> 21) & 0x7f) | 0x80;
+ *b->asn_ptr++ = ((sub >> 14) & 0x7f) | 0x80;
+ *b->asn_ptr++ = ((sub >> 7) & 0x7f) | 0x80;
+ *b->asn_ptr++ = sub & 0x7f;
+ b->asn_len -= 5;
+ }
+ }
+ return (err);
+}
+/*
+ * SEQUENCE header
+ *
+ * <0x10|0x20> <len> <data...>
+ */
+enum asn_err
+asn_get_sequence(struct asn_buf *b, asn_len_t *len)
+{
+ u_char type;
+ enum asn_err err;
+
+ if ((err = asn_get_header(b, &type, len)) != ASN_ERR_OK)
+ return (err);
+ if (type != (ASN_TYPE_SEQUENCE|ASN_TYPE_CONSTRUCTED)) {
+ asn_error(b, "bad sequence type %u", type);
+ return (ASN_ERR_TAG);
+ }
+ if (*len > b->asn_len) {
+ asn_error(b, "truncated sequence");
+ return (ASN_ERR_EOBUF);
+ }
+ return (ASN_ERR_OK);
+}
+
+/*
+ * Application types
+ *
+ * 0x40 4 MSB 2MSB 2LSB LSB
+ */
+enum asn_err
+asn_get_ipaddress_raw(struct asn_buf *b, asn_len_t len, u_char *addr)
+{
+ u_int i;
+
+ if (b->asn_len < len) {
+ asn_error(b, "truncated ip-address");
+ return (ASN_ERR_EOBUF);
+ }
+ if (len < 4) {
+ asn_error(b, "short length for ip-Address %u", len);
+ for (i = 0; i < len; i++)
+ *addr++ = *b->asn_cptr++;
+ while (i++ < len)
+ *addr++ = 0;
+ b->asn_len -= len;
+ return (ASN_ERR_BADLEN);
+ }
+ for (i = 0; i < 4; i++)
+ *addr++ = *b->asn_cptr++;
+ b->asn_cptr += len - 4;
+ b->asn_len -= len;
+ return (ASN_ERR_OK);
+}
+
+enum asn_err
+asn_get_ipaddress(struct asn_buf *b, u_char *addr)
+{
+ u_char type;
+ asn_len_t len;
+ enum asn_err err;
+
+ if ((err = asn_get_header(b, &type, &len)) != ASN_ERR_OK)
+ return (err);
+ if (type != (ASN_CLASS_APPLICATION|ASN_APP_IPADDRESS)) {
+ asn_error(b, "bad type for ip-address %u", type);
+ return (ASN_ERR_TAG);
+ }
+ return (asn_get_ipaddress_raw(b, len, addr));
+}
+
+enum asn_err
+asn_put_ipaddress(struct asn_buf *b, const u_char *addr)
+{
+ enum asn_err err;
+
+ if ((err = asn_put_header(b, ASN_CLASS_APPLICATION|ASN_APP_IPADDRESS,
+ 4)) != ASN_ERR_OK)
+ return (err);
+ if (b->asn_len < 4)
+ return (ASN_ERR_EOBUF);
+
+ memcpy(b->asn_ptr, addr, 4);
+ b->asn_ptr += 4;
+ b->asn_len -= 4;
+ return (ASN_ERR_OK);
+}
+
+
+/*
+ * UNSIGNED32
+ *
+ * 0x42|0x41 <len> ...
+ */
+enum asn_err
+asn_get_uint32_raw(struct asn_buf *b, asn_len_t len, uint32_t *vp)
+{
+ uint64_t v;
+ enum asn_err err;
+
+ if ((err = asn_get_real_unsigned(b, len, &v)) == ASN_ERR_OK) {
+ if (len > 5) {
+ asn_error(b, "uint32 too long %u", len);
+ err = ASN_ERR_BADLEN;
+ } else if (v > UINT32_MAX) {
+ asn_error(b, "uint32 too large %llu", v);
+ err = ASN_ERR_RANGE;
+ }
+ *vp = (uint32_t)v;
+ }
+ return (err);
+}
+
+enum asn_err
+asn_put_uint32(struct asn_buf *b, u_char type, uint32_t val)
+{
+ uint64_t v = val;
+
+ return (asn_put_real_unsigned(b, ASN_CLASS_APPLICATION|type, v));
+}
+
+/*
+ * COUNTER64
+ * 0x46 <len> ...
+ */
+enum asn_err
+asn_get_counter64_raw(struct asn_buf *b, asn_len_t len, uint64_t *vp)
+{
+ return (asn_get_real_unsigned(b, len, vp));
+}
+
+enum asn_err
+asn_put_counter64(struct asn_buf *b, uint64_t val)
+{
+ return (asn_put_real_unsigned(b,
+ ASN_CLASS_APPLICATION | ASN_APP_COUNTER64, val));
+}
+
+/*
+ * TimeTicks
+ * 0x43 <len> ...
+ */
+enum asn_err
+asn_get_timeticks(struct asn_buf *b, uint32_t *vp)
+{
+ asn_len_t len;
+ u_char type;
+ enum asn_err err;
+
+ if ((err = asn_get_header(b, &type, &len)) != ASN_ERR_OK)
+ return (err);
+ if (type != (ASN_CLASS_APPLICATION|ASN_APP_TIMETICKS)) {
+ asn_error(b, "bad type for timeticks %u", type);
+ return (ASN_ERR_TAG);
+ }
+ return (asn_get_uint32_raw(b, len, vp));
+}
+
+enum asn_err
+asn_put_timeticks(struct asn_buf *b, uint32_t val)
+{
+ uint64_t v = val;
+
+ return (asn_put_real_unsigned(b,
+ ASN_CLASS_APPLICATION | ASN_APP_TIMETICKS, v));
+}
+
+/*
+ * Construct a new OID by taking a range of sub ids of the original oid.
+ */
+void
+asn_slice_oid(struct asn_oid *dest, const struct asn_oid *src,
+ u_int from, u_int to)
+{
+ if (from >= to) {
+ dest->len = 0;
+ return;
+ }
+ dest->len = to - from;
+ memcpy(dest->subs, &src->subs[from], dest->len * sizeof(dest->subs[0]));
+}
+
+/*
+ * Append from to to
+ */
+void
+asn_append_oid(struct asn_oid *to, const struct asn_oid *from)
+{
+ memcpy(&to->subs[to->len], &from->subs[0],
+ from->len * sizeof(from->subs[0]));
+ to->len += from->len;
+}
+
+/*
+ * Skip a value
+ */
+enum asn_err
+asn_skip(struct asn_buf *b, asn_len_t len)
+{
+ if (b->asn_len < len)
+ return (ASN_ERR_EOBUF);
+ b->asn_cptr += len;
+ b->asn_len -= len;
+ return (ASN_ERR_OK);
+}
+
+/*
+ * Compare two OIDs.
+ *
+ * o1 < o2 : -1
+ * o1 > o2 : +1
+ * o1 = o2 : 0
+ */
+int
+asn_compare_oid(const struct asn_oid *o1, const struct asn_oid *o2)
+{
+ u_long i;
+
+ for (i = 0; i < o1->len && i < o2->len; i++) {
+ if (o1->subs[i] < o2->subs[i])
+ return (-1);
+ if (o1->subs[i] > o2->subs[i])
+ return (+1);
+ }
+ if (o1->len < o2->len)
+ return (-1);
+ if (o1->len > o2->len)
+ return (+1);
+ return (0);
+}
+
+/*
+ * Check whether an OID is a sub-string of another OID.
+ */
+int
+asn_is_suboid(const struct asn_oid *o1, const struct asn_oid *o2)
+{
+ u_long i;
+
+ for (i = 0; i < o1->len; i++)
+ if (i >= o2->len || o1->subs[i] != o2->subs[i])
+ return (0);
+ return (1);
+}
+
+/*
+ * Put a string representation of an oid into a user buffer. This buffer
+ * is assumed to be at least ASN_OIDSTRLEN characters long.
+ *
+ * sprintf is assumed not to fail here.
+ */
+char *
+asn_oid2str_r(const struct asn_oid *oid, char *buf)
+{
+ u_int len, i;
+ char *ptr;
+
+ if ((len = oid->len) > ASN_MAXOIDLEN)
+ len = ASN_MAXOIDLEN;
+ buf[0] = '\0';
+ for (i = 0, ptr = buf; i < len; i++) {
+ if (i > 0)
+ *ptr++ = '.';
+ ptr += sprintf(ptr, "%u", oid->subs[i]);
+ }
+ return (buf);
+}
+
+/*
+ * Make a string from an OID in a private buffer.
+ */
+char *
+asn_oid2str(const struct asn_oid *oid)
+{
+ static char str[ASN_OIDSTRLEN];
+
+ return (asn_oid2str_r(oid, str));
+}
+
+
+static void
+asn_error_func(const struct asn_buf *b, const char *err, ...)
+{
+ va_list ap;
+ u_long i;
+
+ fprintf(stderr, "ASN.1: ");
+ va_start(ap, err);
+ vfprintf(stderr, err, ap);
+ va_end(ap);
+
+ if (b != NULL) {
+ fprintf(stderr, " at");
+ for (i = 0; b->asn_len > i; i++)
+ fprintf(stderr, " %02x", b->asn_cptr[i]);
+ }
+ fprintf(stderr, "\n");
+}
diff --git a/daemon/bsnmp/asn1.h b/daemon/bsnmp/asn1.h
new file mode 100644
index 0000000..23b7814
--- /dev/null
+++ b/daemon/bsnmp/asn1.h
@@ -0,0 +1,183 @@
+/*
+ * Copyright (c) 2001-2003
+ * Fraunhofer Institute for Open Communication Systems (FhG Fokus).
+ * All rights reserved.
+ *
+ * Author: Harti Brandt <harti@freebsd.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $Begemot: bsnmp/lib/asn1.h,v 1.18 2004/08/06 08:46:50 brandt Exp $
+ *
+ * ASN.1 for SNMP
+ */
+#ifndef asn1_h_
+#define asn1_h_
+
+#include <sys/types.h>
+#include <stdint.h>
+
+struct asn_buf {
+ union {
+ u_char *ptr;
+ const u_char *cptr;
+ } asn_u;
+ size_t asn_len;
+};
+#define asn_cptr asn_u.cptr
+#define asn_ptr asn_u.ptr
+
+/* these restrictions are in the SMI */
+#define ASN_MAXID 0xffffffff
+#define ASN_MAXOIDLEN 128
+
+/* the string needed for this (with trailing zero) */
+#define ASN_OIDSTRLEN (ASN_MAXOIDLEN * (10 + 1) - 1 + 1)
+
+/* type of subidentifiers */
+typedef uint32_t asn_subid_t;
+
+struct asn_oid {
+ u_int len;
+ asn_subid_t subs[ASN_MAXOIDLEN];
+};
+
+enum asn_err {
+ /* conversion was ok */
+ ASN_ERR_OK = 0,
+ /* conversion failed and stopped */
+ ASN_ERR_FAILED = 1 | 0x1000,
+ /* length field bad, value skipped */
+ ASN_ERR_BADLEN = 2,
+ /* out of buffer, stopped */
+ ASN_ERR_EOBUF = 3 | 0x1000,
+ /* length ok, but value is out of range */
+ ASN_ERR_RANGE = 4,
+ /* not the expected tag, stopped */
+ ASN_ERR_TAG = 5 | 0x1000,
+};
+#define ASN_ERR_STOPPED(E) (((E) & 0x1000) != 0)
+
+/* type for the length field of encoded values. The length is restricted
+ * to 65535, but using uint16_t would give conversion warnings on gcc */
+typedef uint32_t asn_len_t; /* could be also uint16_t */
+
+/* maximal length of a long length field without the length of the length */
+#define ASN_MAXLEN 65535
+#define ASN_MAXLENLEN 2 /* number of bytes in a length */
+
+/* maximum size of an octet string as per SMIv2 */
+#define ASN_MAXOCTETSTRING 65535
+
+extern void (*asn_error)(const struct asn_buf *, const char *, ...);
+
+enum asn_err asn_get_header(struct asn_buf *, u_char *, asn_len_t *);
+enum asn_err asn_put_header(struct asn_buf *, u_char, asn_len_t);
+
+enum asn_err asn_put_temp_header(struct asn_buf *, u_char, u_char **);
+enum asn_err asn_commit_header(struct asn_buf *, u_char *);
+
+enum asn_err asn_get_integer_raw(struct asn_buf *, asn_len_t, int32_t *);
+enum asn_err asn_get_integer(struct asn_buf *, int32_t *);
+enum asn_err asn_put_integer(struct asn_buf *, int32_t);
+
+enum asn_err asn_get_octetstring_raw(struct asn_buf *, asn_len_t, u_char *, u_int *);
+enum asn_err asn_get_octetstring(struct asn_buf *, u_char *, u_int *);
+enum asn_err asn_put_octetstring(struct asn_buf *, const u_char *, u_int);
+
+enum asn_err asn_get_null_raw(struct asn_buf *b, asn_len_t);
+enum asn_err asn_get_null(struct asn_buf *);
+enum asn_err asn_put_null(struct asn_buf *);
+
+enum asn_err asn_put_exception(struct asn_buf *, u_int);
+
+enum asn_err asn_get_objid_raw(struct asn_buf *, asn_len_t, struct asn_oid *);
+enum asn_err asn_get_objid(struct asn_buf *, struct asn_oid *);
+enum asn_err asn_put_objid(struct asn_buf *, const struct asn_oid *);
+
+enum asn_err asn_get_sequence(struct asn_buf *, asn_len_t *);
+
+enum asn_err asn_get_ipaddress_raw(struct asn_buf *, asn_len_t, u_char *);
+enum asn_err asn_get_ipaddress(struct asn_buf *, u_char *);
+enum asn_err asn_put_ipaddress(struct asn_buf *, const u_char *);
+
+enum asn_err asn_get_uint32_raw(struct asn_buf *, asn_len_t, uint32_t *);
+enum asn_err asn_put_uint32(struct asn_buf *, u_char, uint32_t);
+
+enum asn_err asn_get_counter64_raw(struct asn_buf *, asn_len_t, uint64_t *);
+enum asn_err asn_put_counter64(struct asn_buf *, uint64_t);
+
+enum asn_err asn_get_timeticks(struct asn_buf *, uint32_t *);
+enum asn_err asn_put_timeticks(struct asn_buf *, uint32_t);
+
+enum asn_err asn_skip(struct asn_buf *, asn_len_t);
+
+/*
+ * Utility functions for OIDs
+ */
+/* get a sub-OID from the middle of another OID */
+void asn_slice_oid(struct asn_oid *, const struct asn_oid *, u_int, u_int);
+
+/* append an OID to another one */
+void asn_append_oid(struct asn_oid *, const struct asn_oid *);
+
+/* compare two OIDs */
+int asn_compare_oid(const struct asn_oid *, const struct asn_oid *);
+
+/* check whether the first is a suboid of the second one */
+int asn_is_suboid(const struct asn_oid *, const struct asn_oid *);
+
+/* format an OID into a user buffer of size ASN_OIDSTRLEN */
+char *asn_oid2str_r(const struct asn_oid *, char *);
+
+/* format an OID into a private static buffer */
+char *asn_oid2str(const struct asn_oid *);
+
+enum {
+ ASN_TYPE_BOOLEAN = 0x01,
+ ASN_TYPE_INTEGER = 0x02,
+ ASN_TYPE_BITSTRING = 0x03,
+ ASN_TYPE_OCTETSTRING = 0x04,
+ ASN_TYPE_NULL = 0x05,
+ ASN_TYPE_OBJID = 0x06,
+ ASN_TYPE_SEQUENCE = 0x10,
+
+ ASN_TYPE_CONSTRUCTED = 0x20,
+ ASN_CLASS_UNIVERSAL = 0x00,
+ ASN_CLASS_APPLICATION = 0x40,
+ ASN_CLASS_CONTEXT = 0x80,
+ ASN_CLASS_PRIVATE = 0xc0,
+ ASN_TYPE_MASK = 0x1f,
+
+ ASN_APP_IPADDRESS = 0x00,
+ ASN_APP_COUNTER = 0x01,
+ ASN_APP_GAUGE = 0x02,
+ ASN_APP_TIMETICKS = 0x03,
+ ASN_APP_OPAQUE = 0x04, /* not implemented */
+ ASN_APP_COUNTER64 = 0x06,
+
+ ASN_EXCEPT_NOSUCHOBJECT = 0x00,
+ ASN_EXCEPT_NOSUCHINSTANCE = 0x01,
+ ASN_EXCEPT_ENDOFMIBVIEW = 0x02,
+};
+
+#endif
diff --git a/daemon/bsnmp/snmp.c b/daemon/bsnmp/snmp.c
new file mode 100644
index 0000000..f758262
--- /dev/null
+++ b/daemon/bsnmp/snmp.c
@@ -0,0 +1,1081 @@
+/*
+ * Copyright (c) 2001-2003
+ * Fraunhofer Institute for Open Communication Systems (FhG Fokus).
+ * All rights reserved.
+ *
+ * Author: Harti Brandt <harti@freebsd.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $Begemot: bsnmp/lib/snmp.c,v 1.38 2004/08/06 08:46:53 brandt Exp $
+ *
+ * SNMP
+ */
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <stddef.h>
+#include <stdarg.h>
+#include <stdint.h>
+#include <string.h>
+#include <ctype.h>
+#include <netdb.h>
+#include <errno.h>
+
+#include "asn1.h"
+#include "snmp.h"
+#include "snmppriv.h"
+
+static void snmp_error_func(const char *, ...);
+static void snmp_printf_func(const char *, ...);
+
+void (*snmp_error)(const char *, ...) = snmp_error_func;
+void (*snmp_printf)(const char *, ...) = snmp_printf_func;
+
+/*
+ * Get the next variable binding from the list.
+ * ASN errors on the sequence or the OID are always fatal.
+ */
+static enum asn_err
+get_var_binding(struct asn_buf *b, struct snmp_value *binding)
+{
+ u_char type;
+ asn_len_t len, trailer;
+ enum asn_err err;
+
+ if (asn_get_sequence(b, &len) != ASN_ERR_OK) {
+ snmp_error("cannot parse varbind header");
+ return (ASN_ERR_FAILED);
+ }
+
+ /* temporary truncate the length so that the parser does not
+ * eat up bytes behind the sequence in the case the encoding is
+ * wrong of inner elements. */
+ trailer = b->asn_len - len;
+ b->asn_len = len;
+
+ if (asn_get_objid(b, &binding->var) != ASN_ERR_OK) {
+ snmp_error("cannot parse binding objid");
+ return (ASN_ERR_FAILED);
+ }
+ if (asn_get_header(b, &type, &len) != ASN_ERR_OK) {
+ snmp_error("cannot parse binding value header");
+ return (ASN_ERR_FAILED);
+ }
+
+ switch (type) {
+
+ case ASN_TYPE_NULL:
+ binding->syntax = SNMP_SYNTAX_NULL;
+ err = asn_get_null_raw(b, len);
+ break;
+
+ case ASN_TYPE_INTEGER:
+ binding->syntax = SNMP_SYNTAX_INTEGER;
+ err = asn_get_integer_raw(b, len, &binding->v.integer);
+ break;
+
+ case ASN_TYPE_OCTETSTRING:
+ binding->syntax = SNMP_SYNTAX_OCTETSTRING;
+ binding->v.octetstring.octets = malloc(len);
+ if (binding->v.octetstring.octets == NULL) {
+ snmp_error("%s", strerror(errno));
+ return (ASN_ERR_FAILED);
+ }
+ binding->v.octetstring.len = len;
+ err = asn_get_octetstring_raw(b, len,
+ binding->v.octetstring.octets,
+ &binding->v.octetstring.len);
+ if (ASN_ERR_STOPPED(err)) {
+ free(binding->v.octetstring.octets);
+ binding->v.octetstring.octets = NULL;
+ }
+ break;
+
+ case ASN_TYPE_OBJID:
+ binding->syntax = SNMP_SYNTAX_OID;
+ err = asn_get_objid_raw(b, len, &binding->v.oid);
+ break;
+
+ case ASN_CLASS_APPLICATION|ASN_APP_IPADDRESS:
+ binding->syntax = SNMP_SYNTAX_IPADDRESS;
+ err = asn_get_ipaddress_raw(b, len, binding->v.ipaddress);
+ break;
+
+ case ASN_CLASS_APPLICATION|ASN_APP_TIMETICKS:
+ binding->syntax = SNMP_SYNTAX_TIMETICKS;
+ err = asn_get_uint32_raw(b, len, &binding->v.uint32);
+ break;
+
+ case ASN_CLASS_APPLICATION|ASN_APP_COUNTER:
+ binding->syntax = SNMP_SYNTAX_COUNTER;
+ err = asn_get_uint32_raw(b, len, &binding->v.uint32);
+ break;
+
+ case ASN_CLASS_APPLICATION|ASN_APP_GAUGE:
+ binding->syntax = SNMP_SYNTAX_GAUGE;
+ err = asn_get_uint32_raw(b, len, &binding->v.uint32);
+ break;
+
+ case ASN_CLASS_APPLICATION|ASN_APP_COUNTER64:
+ binding->syntax = SNMP_SYNTAX_COUNTER64;
+ err = asn_get_counter64_raw(b, len, &binding->v.counter64);
+ break;
+
+ case ASN_CLASS_CONTEXT | ASN_EXCEPT_NOSUCHOBJECT:
+ binding->syntax = SNMP_SYNTAX_NOSUCHOBJECT;
+ err = asn_get_null_raw(b, len);
+ break;
+
+ case ASN_CLASS_CONTEXT | ASN_EXCEPT_NOSUCHINSTANCE:
+ binding->syntax = SNMP_SYNTAX_NOSUCHINSTANCE;
+ err = asn_get_null_raw(b, len);
+ break;
+
+ case ASN_CLASS_CONTEXT | ASN_EXCEPT_ENDOFMIBVIEW:
+ binding->syntax = SNMP_SYNTAX_ENDOFMIBVIEW;
+ err = asn_get_null_raw(b, len);
+ break;
+
+ default:
+ if ((err = asn_skip(b, len)) == ASN_ERR_OK)
+ err = ASN_ERR_TAG;
+ snmp_error("bad binding value type 0x%x", type);
+ break;
+ }
+
+ if (ASN_ERR_STOPPED(err)) {
+ snmp_error("cannot parse binding value");
+ return (err);
+ }
+
+ if (b->asn_len != 0)
+ snmp_error("ignoring junk at end of binding");
+
+ b->asn_len = trailer;
+
+ return (err);
+}
+
+/*
+ * Parse the different PDUs contents. Any ASN error in the outer components
+ * are fatal. Only errors in variable values may be tolerated. If all
+ * components can be parsed it returns either ASN_ERR_OK or the first
+ * error that was found.
+ */
+enum asn_err
+snmp_parse_pdus_hdr(struct asn_buf *b, struct snmp_pdu *pdu, asn_len_t *lenp)
+{
+ if (pdu->type == SNMP_PDU_TRAP) {
+ if (asn_get_objid(b, &pdu->enterprise) != ASN_ERR_OK) {
+ snmp_error("cannot parse trap enterprise");
+ return (ASN_ERR_FAILED);
+ }
+ if (asn_get_ipaddress(b, pdu->agent_addr) != ASN_ERR_OK) {
+ snmp_error("cannot parse trap agent address");
+ return (ASN_ERR_FAILED);
+ }
+ if (asn_get_integer(b, &pdu->generic_trap) != ASN_ERR_OK) {
+ snmp_error("cannot parse 'generic-trap'");
+ return (ASN_ERR_FAILED);
+ }
+ if (asn_get_integer(b, &pdu->specific_trap) != ASN_ERR_OK) {
+ snmp_error("cannot parse 'specific-trap'");
+ return (ASN_ERR_FAILED);
+ }
+ if (asn_get_timeticks(b, &pdu->time_stamp) != ASN_ERR_OK) {
+ snmp_error("cannot parse trap 'time-stamp'");
+ return (ASN_ERR_FAILED);
+ }
+ } else {
+ if (asn_get_integer(b, &pdu->request_id) != ASN_ERR_OK) {
+ snmp_error("cannot parse 'request-id'");
+ return (ASN_ERR_FAILED);
+ }
+ if (asn_get_integer(b, &pdu->error_status) != ASN_ERR_OK) {
+ snmp_error("cannot parse 'error_status'");
+ return (ASN_ERR_FAILED);
+ }
+ if (asn_get_integer(b, &pdu->error_index) != ASN_ERR_OK) {
+ snmp_error("cannot parse 'error_index'");
+ return (ASN_ERR_FAILED);
+ }
+ }
+
+ if (asn_get_sequence(b, lenp) != ASN_ERR_OK) {
+ snmp_error("cannot get varlist header");
+ return (ASN_ERR_FAILED);
+ }
+
+ return (ASN_ERR_OK);
+}
+
+static enum asn_err
+parse_pdus(struct asn_buf *b, struct snmp_pdu *pdu, int32_t *ip)
+{
+ asn_len_t len, trailer;
+ struct snmp_value *v;
+ enum asn_err err, err1;
+
+ err = snmp_parse_pdus_hdr(b, pdu, &len);
+ if (ASN_ERR_STOPPED(err))
+ return (err);
+
+ trailer = b->asn_len - len;
+
+ v = pdu->bindings;
+ err = ASN_ERR_OK;
+ while (b->asn_len != 0) {
+ if (pdu->nbindings == SNMP_MAX_BINDINGS) {
+ snmp_error("too many bindings (> %u) in PDU",
+ SNMP_MAX_BINDINGS);
+ return (ASN_ERR_FAILED);
+ }
+ err1 = get_var_binding(b, v);
+ if (ASN_ERR_STOPPED(err1))
+ return (ASN_ERR_FAILED);
+ if (err1 != ASN_ERR_OK && err == ASN_ERR_OK) {
+ err = err1;
+ *ip = pdu->nbindings + 1;
+ }
+ pdu->nbindings++;
+ v++;
+ }
+
+ b->asn_len = trailer;
+
+ return (err);
+}
+
+/*
+ * Parse the outer SEQUENCE value. ASN_ERR_TAG means 'bad version'.
+ */
+enum asn_err
+snmp_parse_message_hdr(struct asn_buf *b, struct snmp_pdu *pdu, asn_len_t *lenp)
+{
+ int32_t version;
+ u_char type;
+ u_int comm_len;
+
+ if (asn_get_integer(b, &version) != ASN_ERR_OK) {
+ snmp_error("cannot decode version");
+ return (ASN_ERR_FAILED);
+ }
+
+ if (version == 0) {
+ pdu->version = SNMP_V1;
+ } else if (version == 1) {
+ pdu->version = SNMP_V2c;
+ } else {
+ pdu->version = SNMP_Verr;
+ snmp_error("unsupported SNMP version");
+ return (ASN_ERR_TAG);
+ }
+
+ comm_len = SNMP_COMMUNITY_MAXLEN;
+ if (asn_get_octetstring(b, (u_char *)pdu->community,
+ &comm_len) != ASN_ERR_OK) {
+ snmp_error("cannot decode community");
+ return (ASN_ERR_FAILED);
+ }
+ pdu->community[comm_len] = '\0';
+
+ if (asn_get_header(b, &type, lenp) != ASN_ERR_OK) {
+ snmp_error("cannot get pdu header");
+ return (ASN_ERR_FAILED);
+ }
+ if ((type & ~ASN_TYPE_MASK) !=
+ (ASN_TYPE_CONSTRUCTED | ASN_CLASS_CONTEXT)) {
+ snmp_error("bad pdu header tag");
+ return (ASN_ERR_FAILED);
+ }
+ pdu->type = type & ASN_TYPE_MASK;
+
+ switch (pdu->type) {
+
+ case SNMP_PDU_GET:
+ case SNMP_PDU_GETNEXT:
+ case SNMP_PDU_RESPONSE:
+ case SNMP_PDU_SET:
+ break;
+
+ case SNMP_PDU_TRAP:
+ if (pdu->version != SNMP_V1) {
+ snmp_error("bad pdu type %u", pdu->type);
+ return (ASN_ERR_FAILED);
+ }
+ break;
+
+ case SNMP_PDU_GETBULK:
+ case SNMP_PDU_INFORM:
+ case SNMP_PDU_TRAP2:
+ case SNMP_PDU_REPORT:
+ if (pdu->version == SNMP_V1) {
+ snmp_error("bad pdu type %u", pdu->type);
+ return (ASN_ERR_FAILED);
+ }
+ break;
+
+ default:
+ snmp_error("bad pdu type %u", pdu->type);
+ return (ASN_ERR_FAILED);
+ }
+
+
+ if (*lenp > b->asn_len) {
+ snmp_error("pdu length too long");
+ return (ASN_ERR_FAILED);
+ }
+
+ return (ASN_ERR_OK);
+}
+
+static enum asn_err
+parse_message(struct asn_buf *b, struct snmp_pdu *pdu, int32_t *ip)
+{
+ enum asn_err err;
+ asn_len_t len, trailer;
+
+ err = snmp_parse_message_hdr(b, pdu, &len);
+ if (ASN_ERR_STOPPED(err))
+ return (err);
+
+ trailer = b->asn_len - len;
+ b->asn_len = len;
+
+ err = parse_pdus(b, pdu, ip);
+ if (ASN_ERR_STOPPED(err))
+ return (ASN_ERR_FAILED);
+
+ if (b->asn_len != 0)
+ snmp_error("ignoring trailing junk after pdu");
+
+ b->asn_len = trailer;
+
+ return (err);
+}
+
+/*
+ * Decode the PDU except for the variable bindings itself.
+ * If decoding fails because of a bad binding, but the rest can be
+ * decoded, ip points to the index of the failed variable (errors
+ * OORANGE, BADLEN or BADVERS).
+ */
+enum snmp_code
+snmp_pdu_decode(struct asn_buf *b, struct snmp_pdu *pdu, int32_t *ip)
+{
+ asn_len_t len;
+
+ memset(pdu, 0, sizeof(*pdu));
+
+ if (asn_get_sequence(b, &len) != ASN_ERR_OK) {
+ snmp_error("cannot decode pdu header");
+ return (SNMP_CODE_FAILED);
+ }
+ if (b->asn_len < len) {
+ snmp_error("outer sequence value too short");
+ return (SNMP_CODE_FAILED);
+ }
+ if (b->asn_len != len) {
+ snmp_error("ignoring trailing junk in message");
+ b->asn_len = len;
+ }
+
+ switch (parse_message(b, pdu, ip)) {
+
+ case ASN_ERR_OK:
+ return (SNMP_CODE_OK);
+
+ case ASN_ERR_FAILED:
+ case ASN_ERR_EOBUF:
+ snmp_pdu_free(pdu);
+ return (SNMP_CODE_FAILED);
+
+ case ASN_ERR_BADLEN:
+ return (SNMP_CODE_BADLEN);
+
+ case ASN_ERR_RANGE:
+ return (SNMP_CODE_OORANGE);
+
+ case ASN_ERR_TAG:
+ if (pdu->version == SNMP_Verr)
+ return (SNMP_CODE_BADVERS);
+ else
+ return (SNMP_CODE_BADENC);
+ }
+
+ return (SNMP_CODE_OK);
+}
+
+/*
+ * Check whether what we have is the complete PDU by snooping at the
+ * enclosing structure header. This returns:
+ * -1 if there are ASN.1 errors
+ * 0 if we need more data
+ * > 0 the length of this PDU
+ */
+int
+snmp_pdu_snoop(const struct asn_buf *b0)
+{
+ u_int length;
+ asn_len_t len;
+ struct asn_buf b = *b0;
+
+ /* <0x10|0x20> <len> <data...> */
+
+ if (b.asn_len == 0)
+ return (0);
+ if (b.asn_cptr[0] != (ASN_TYPE_SEQUENCE | ASN_TYPE_CONSTRUCTED)) {
+ asn_error(&b, "bad sequence type %u", b.asn_cptr[0]);
+ return (-1);
+ }
+ b.asn_len--;
+ b.asn_cptr++;
+
+ if (b.asn_len == 0)
+ return (0);
+
+ if (*b.asn_cptr & 0x80) {
+ /* long length */
+ length = *b.asn_cptr++ & 0x7f;
+ b.asn_len--;
+ if (length == 0) {
+ asn_error(&b, "indefinite length not supported");
+ return (-1);
+ }
+ if (length > ASN_MAXLENLEN) {
+ asn_error(&b, "long length too long (%u)", length);
+ return (-1);
+ }
+ if (length > b.asn_len)
+ return (0);
+ len = 0;
+ while (length--) {
+ len = (len << 8) | *b.asn_cptr++;
+ b.asn_len--;
+ }
+ } else {
+ len = *b.asn_cptr++;
+ b.asn_len--;
+ }
+
+ if (len > b.asn_len)
+ return (0);
+
+ return (len + b.asn_cptr - b0->asn_cptr);
+}
+
+/*
+ * Encode the SNMP PDU without the variable bindings field.
+ * We do this the rather uneffective way by
+ * moving things around and assuming that the length field will never
+ * use more than 2 bytes.
+ * We need a number of pointers to apply the fixes afterwards.
+ */
+enum snmp_code
+snmp_pdu_encode_header(struct asn_buf *b, struct snmp_pdu *pdu)
+{
+ enum asn_err err;
+
+ if (asn_put_temp_header(b, (ASN_TYPE_SEQUENCE|ASN_TYPE_CONSTRUCTED),
+ &pdu->outer_ptr) != ASN_ERR_OK)
+ return (SNMP_CODE_FAILED);
+
+ if (pdu->version == SNMP_V1)
+ err = asn_put_integer(b, 0);
+ else if (pdu->version == SNMP_V2c)
+ err = asn_put_integer(b, 1);
+ else
+ return (SNMP_CODE_BADVERS);
+ if (err != ASN_ERR_OK)
+ return (SNMP_CODE_FAILED);
+
+ if (asn_put_octetstring(b, (u_char *)pdu->community,
+ strlen(pdu->community)) != ASN_ERR_OK)
+ return (SNMP_CODE_FAILED);
+
+ if (asn_put_temp_header(b, (ASN_TYPE_CONSTRUCTED | ASN_CLASS_CONTEXT |
+ pdu->type), &pdu->pdu_ptr) != ASN_ERR_OK)
+ return (SNMP_CODE_FAILED);
+
+ if (pdu->type == SNMP_PDU_TRAP) {
+ if (pdu->version != SNMP_V1 ||
+ asn_put_objid(b, &pdu->enterprise) != ASN_ERR_OK ||
+ asn_put_ipaddress(b, pdu->agent_addr) != ASN_ERR_OK ||
+ asn_put_integer(b, pdu->generic_trap) != ASN_ERR_OK ||
+ asn_put_integer(b, pdu->specific_trap) != ASN_ERR_OK ||
+ asn_put_timeticks(b, pdu->time_stamp) != ASN_ERR_OK)
+ return (SNMP_CODE_FAILED);
+ } else {
+ if (pdu->version == SNMP_V1 && (pdu->type == SNMP_PDU_GETBULK ||
+ pdu->type == SNMP_PDU_INFORM ||
+ pdu->type == SNMP_PDU_TRAP2 ||
+ pdu->type == SNMP_PDU_REPORT))
+ return (SNMP_CODE_FAILED);
+
+ if (asn_put_integer(b, pdu->request_id) != ASN_ERR_OK ||
+ asn_put_integer(b, pdu->error_status) != ASN_ERR_OK ||
+ asn_put_integer(b, pdu->error_index) != ASN_ERR_OK)
+ return (SNMP_CODE_FAILED);
+ }
+
+ if (asn_put_temp_header(b, (ASN_TYPE_SEQUENCE|ASN_TYPE_CONSTRUCTED),
+ &pdu->vars_ptr) != ASN_ERR_OK)
+ return (SNMP_CODE_FAILED);
+
+ return (SNMP_CODE_OK);
+}
+
+enum snmp_code
+snmp_fix_encoding(struct asn_buf *b, const struct snmp_pdu *pdu)
+{
+ if (asn_commit_header(b, pdu->vars_ptr) != ASN_ERR_OK ||
+ asn_commit_header(b, pdu->pdu_ptr) != ASN_ERR_OK ||
+ asn_commit_header(b, pdu->outer_ptr) != ASN_ERR_OK)
+ return (SNMP_CODE_FAILED);
+ return (SNMP_CODE_OK);
+}
+
+/*
+ * Encode a binding. Caller must ensure, that the syntax is ok for that version.
+ * Be sure not to cobber b, when something fails.
+ */
+enum asn_err
+snmp_binding_encode(struct asn_buf *b, const struct snmp_value *binding)
+{
+ u_char *ptr;
+ enum asn_err err;
+ struct asn_buf save = *b;
+
+ if ((err = asn_put_temp_header(b, (ASN_TYPE_SEQUENCE |
+ ASN_TYPE_CONSTRUCTED), &ptr)) != ASN_ERR_OK) {
+ *b = save;
+ return (err);
+ }
+
+ if ((err = asn_put_objid(b, &binding->var)) != ASN_ERR_OK) {
+ *b = save;
+ return (err);
+ }
+
+ switch (binding->syntax) {
+
+ case SNMP_SYNTAX_NULL:
+ err = asn_put_null(b);
+ break;
+
+ case SNMP_SYNTAX_INTEGER:
+ err = asn_put_integer(b, binding->v.integer);
+ break;
+
+ case SNMP_SYNTAX_OCTETSTRING:
+ err = asn_put_octetstring(b, binding->v.octetstring.octets,
+ binding->v.octetstring.len);
+ break;
+
+ case SNMP_SYNTAX_OID:
+ err = asn_put_objid(b, &binding->v.oid);
+ break;
+
+ case SNMP_SYNTAX_IPADDRESS:
+ err = asn_put_ipaddress(b, binding->v.ipaddress);
+ break;
+
+ case SNMP_SYNTAX_TIMETICKS:
+ err = asn_put_uint32(b, ASN_APP_TIMETICKS, binding->v.uint32);
+ break;
+
+ case SNMP_SYNTAX_COUNTER:
+ err = asn_put_uint32(b, ASN_APP_COUNTER, binding->v.uint32);
+ break;
+
+ case SNMP_SYNTAX_GAUGE:
+ err = asn_put_uint32(b, ASN_APP_GAUGE, binding->v.uint32);
+ break;
+
+ case SNMP_SYNTAX_COUNTER64:
+ err = asn_put_counter64(b, binding->v.counter64);
+ break;
+
+ case SNMP_SYNTAX_NOSUCHOBJECT:
+ err = asn_put_exception(b, ASN_EXCEPT_NOSUCHOBJECT);
+ break;
+
+ case SNMP_SYNTAX_NOSUCHINSTANCE:
+ err = asn_put_exception(b, ASN_EXCEPT_NOSUCHINSTANCE);
+ break;
+
+ case SNMP_SYNTAX_ENDOFMIBVIEW:
+ err = asn_put_exception(b, ASN_EXCEPT_ENDOFMIBVIEW);
+ break;
+ }
+
+ if (err != ASN_ERR_OK) {
+ *b = save;
+ return (err);
+ }
+
+ err = asn_commit_header(b, ptr);
+ if (err != ASN_ERR_OK) {
+ *b = save;
+ return (err);
+ }
+
+ return (ASN_ERR_OK);
+}
+
+/*
+ * Encode an PDU.
+ */
+enum snmp_code
+snmp_pdu_encode(struct snmp_pdu *pdu, struct asn_buf *resp_b)
+{
+ u_int idx;
+ enum snmp_code err;
+
+ if ((err = snmp_pdu_encode_header(resp_b, pdu)) != SNMP_CODE_OK)
+ return (err);
+ for (idx = 0; idx < pdu->nbindings; idx++)
+ if ((err = snmp_binding_encode(resp_b, &pdu->bindings[idx]))
+ != ASN_ERR_OK)
+ return (SNMP_CODE_FAILED);
+
+ return (snmp_fix_encoding(resp_b, pdu));
+}
+
+static void
+dump_binding(const struct snmp_value *b)
+{
+ u_int i;
+ char buf[ASN_OIDSTRLEN];
+
+ snmp_printf("%s=", asn_oid2str_r(&b->var, buf));
+ switch (b->syntax) {
+
+ case SNMP_SYNTAX_NULL:
+ snmp_printf("NULL");
+ break;
+
+ case SNMP_SYNTAX_INTEGER:
+ snmp_printf("INTEGER %d", b->v.integer);
+ break;
+
+ case SNMP_SYNTAX_OCTETSTRING:
+ snmp_printf("OCTET STRING %lu:", b->v.octetstring.len);
+ for (i = 0; i < b->v.octetstring.len; i++)
+ snmp_printf(" %02x", b->v.octetstring.octets[i]);
+ break;
+
+ case SNMP_SYNTAX_OID:
+ snmp_printf("OID %s", asn_oid2str_r(&b->v.oid, buf));
+ break;
+
+ case SNMP_SYNTAX_IPADDRESS:
+ snmp_printf("IPADDRESS %u.%u.%u.%u", b->v.ipaddress[0],
+ b->v.ipaddress[1], b->v.ipaddress[2], b->v.ipaddress[3]);
+ break;
+
+ case SNMP_SYNTAX_COUNTER:
+ snmp_printf("COUNTER %u", b->v.uint32);
+ break;
+
+ case SNMP_SYNTAX_GAUGE:
+ snmp_printf("GAUGE %u", b->v.uint32);
+ break;
+
+ case SNMP_SYNTAX_TIMETICKS:
+ snmp_printf("TIMETICKS %u", b->v.uint32);
+ break;
+
+ case SNMP_SYNTAX_COUNTER64:
+ snmp_printf("COUNTER64 %lld", b->v.counter64);
+ break;
+
+ case SNMP_SYNTAX_NOSUCHOBJECT:
+ snmp_printf("NoSuchObject");
+ break;
+
+ case SNMP_SYNTAX_NOSUCHINSTANCE:
+ snmp_printf("NoSuchInstance");
+ break;
+
+ case SNMP_SYNTAX_ENDOFMIBVIEW:
+ snmp_printf("EndOfMibView");
+ break;
+
+ default:
+ snmp_printf("UNKNOWN SYNTAX %u", b->syntax);
+ break;
+ }
+}
+
+static __inline void
+dump_bindings(const struct snmp_pdu *pdu)
+{
+ u_int i;
+
+ for (i = 0; i < pdu->nbindings; i++) {
+ snmp_printf(" [%u]: ", i);
+ dump_binding(&pdu->bindings[i]);
+ snmp_printf("\n");
+ }
+}
+
+static __inline void
+dump_notrap(const struct snmp_pdu *pdu)
+{
+ snmp_printf(" request_id=%d", pdu->request_id);
+ snmp_printf(" error_status=%d", pdu->error_status);
+ snmp_printf(" error_index=%d\n", pdu->error_index);
+ dump_bindings(pdu);
+}
+
+void
+snmp_pdu_dump(const struct snmp_pdu *pdu)
+{
+ char buf[ASN_OIDSTRLEN];
+ const char *vers;
+ static const char *types[] = {
+ [SNMP_PDU_GET] = "GET",
+ [SNMP_PDU_GETNEXT] = "GETNEXT",
+ [SNMP_PDU_RESPONSE] = "RESPONSE",
+ [SNMP_PDU_SET] = "SET",
+ [SNMP_PDU_TRAP] = "TRAPv1",
+ [SNMP_PDU_GETBULK] = "GETBULK",
+ [SNMP_PDU_INFORM] = "INFORM",
+ [SNMP_PDU_TRAP2] = "TRAPv2",
+ [SNMP_PDU_REPORT] = "REPORT",
+ };
+
+ if (pdu->version == SNMP_V1)
+ vers = "SNMPv1";
+ else if (pdu->version == SNMP_V2c)
+ vers = "SNMPv2c";
+ else
+ vers = "v?";
+
+ switch (pdu->type) {
+ case SNMP_PDU_TRAP:
+ snmp_printf("%s %s '%s'", types[pdu->type], vers, pdu->community);
+ snmp_printf(" enterprise=%s", asn_oid2str_r(&pdu->enterprise, buf));
+ snmp_printf(" agent_addr=%u.%u.%u.%u", pdu->agent_addr[0],
+ pdu->agent_addr[1], pdu->agent_addr[2], pdu->agent_addr[3]);
+ snmp_printf(" generic_trap=%d", pdu->generic_trap);
+ snmp_printf(" specific_trap=%d", pdu->specific_trap);
+ snmp_printf(" time-stamp=%u\n", pdu->time_stamp);
+ dump_bindings(pdu);
+ break;
+
+ case SNMP_PDU_GET:
+ case SNMP_PDU_GETNEXT:
+ case SNMP_PDU_RESPONSE:
+ case SNMP_PDU_SET:
+ case SNMP_PDU_GETBULK:
+ case SNMP_PDU_INFORM:
+ case SNMP_PDU_TRAP2:
+ case SNMP_PDU_REPORT:
+ snmp_printf("%s %s '%s'", types[pdu->type], vers, pdu->community);
+ dump_notrap(pdu);
+ break;
+
+ default:
+ snmp_printf("bad pdu type %u\n", pdu->type);
+ break;
+ }
+}
+
+void
+snmp_value_free(struct snmp_value *value)
+{
+ if (value->syntax == SNMP_SYNTAX_OCTETSTRING)
+ free(value->v.octetstring.octets);
+ value->syntax = SNMP_SYNTAX_NULL;
+}
+
+int
+snmp_value_copy(struct snmp_value *to, const struct snmp_value *from)
+{
+ to->var = from->var;
+ to->syntax = from->syntax;
+
+ if (from->syntax == SNMP_SYNTAX_OCTETSTRING) {
+ if ((to->v.octetstring.len = from->v.octetstring.len) == 0)
+ to->v.octetstring.octets = NULL;
+ else {
+ to->v.octetstring.octets = malloc(to->v.octetstring.len);
+ if (to->v.octetstring.octets == NULL)
+ return (-1);
+ (void)memcpy(to->v.octetstring.octets,
+ from->v.octetstring.octets, to->v.octetstring.len);
+ }
+ } else
+ to->v = from->v;
+ return (0);
+}
+
+void
+snmp_pdu_free(struct snmp_pdu *pdu)
+{
+ u_int i;
+
+ for (i = 0; i < pdu->nbindings; i++)
+ snmp_value_free(&pdu->bindings[i]);
+}
+
+/*
+ * Parse an ASCII SNMP value into the binary form
+ */
+int
+snmp_value_parse(const char *str, enum snmp_syntax syntax, union snmp_values *v)
+{
+ char *end;
+
+ switch (syntax) {
+
+ case SNMP_SYNTAX_NULL:
+ case SNMP_SYNTAX_NOSUCHOBJECT:
+ case SNMP_SYNTAX_NOSUCHINSTANCE:
+ case SNMP_SYNTAX_ENDOFMIBVIEW:
+ if (*str != '\0')
+ return (-1);
+ return (0);
+
+ case SNMP_SYNTAX_INTEGER:
+ v->integer = strtoll(str, &end, 0);
+ if (*end != '\0')
+ return (-1);
+ return (0);
+
+ case SNMP_SYNTAX_OCTETSTRING:
+ {
+ u_long len; /* actual length of string */
+ u_long alloc; /* allocate length of string */
+ u_char *octs; /* actual octets */
+ u_long oct; /* actual octet */
+ u_char *nocts; /* to avoid memory leak */
+ u_char c; /* actual character */
+
+# define STUFFC(C) \
+ if (alloc == len) { \
+ alloc += 100; \
+ if ((nocts = realloc(octs, alloc)) == NULL) { \
+ free(octs); \
+ return (-1); \
+ } \
+ octs = nocts; \
+ } \
+ octs[len++] = (C);
+
+ len = alloc = 0;
+ octs = NULL;
+
+ if (*str == '"') {
+ str++;
+ while((c = *str++) != '\0') {
+ if (c == '"') {
+ if (*str != '\0') {
+ free(octs);
+ return (-1);
+ }
+ break;
+ }
+ if (c == '\\') {
+ switch (c = *str++) {
+
+ case '\\':
+ break;
+ case 'a':
+ c = '\a';
+ break;
+ case 'b':
+ c = '\b';
+ break;
+ case 'f':
+ c = '\f';
+ break;
+ case 'n':
+ c = '\n';
+ break;
+ case 'r':
+ c = '\r';
+ break;
+ case 't':
+ c = '\t';
+ break;
+ case 'v':
+ c = '\v';
+ break;
+ case 'x':
+ c = 0;
+ if (!isxdigit(*str))
+ break;
+ if (isdigit(*str))
+ c = *str++ - '0';
+ else if (isupper(*str))
+ c = *str++ - 'A' + 10;
+ else
+ c = *str++ - 'a' + 10;
+ if (!isxdigit(*str))
+ break;
+ if (isdigit(*str))
+ c += *str++ - '0';
+ else if (isupper(*str))
+ c += *str++ - 'A' + 10;
+ else
+ c += *str++ - 'a' + 10;
+ break;
+ case '0': case '1': case '2':
+ case '3': case '4': case '5':
+ case '6': case '7':
+ c = *str++ - '0';
+ if (*str < '0' || *str > '7')
+ break;
+ c = *str++ - '0';
+ if (*str < '0' || *str > '7')
+ break;
+ c = *str++ - '0';
+ break;
+ default:
+ break;
+ }
+ }
+ STUFFC(c);
+ }
+ } else {
+ while (*str != '\0') {
+ oct = strtoul(str, &end, 16);
+ str = end;
+ if (oct > 0xff) {
+ free(octs);
+ return (-1);
+ }
+ STUFFC(oct);
+ if (*str == ':')
+ str++;
+ else if(*str != '\0') {
+ free(octs);
+ return (-1);
+ }
+ }
+ }
+ v->octetstring.octets = octs;
+ v->octetstring.len = len;
+ return (0);
+# undef STUFFC
+ }
+
+ case SNMP_SYNTAX_OID:
+ {
+ u_long subid;
+
+ v->oid.len = 0;
+
+ for (;;) {
+ if (v->oid.len == ASN_MAXOIDLEN)
+ return (-1);
+ subid = strtoul(str, &end, 10);
+ str = end;
+ if (subid > ASN_MAXID)
+ return (-1);
+ v->oid.subs[v->oid.len++] = (asn_subid_t)subid;
+ if (*str == '\0')
+ break;
+ if (*str != '.')
+ return (-1);
+ str++;
+ }
+ return (0);
+ }
+
+ case SNMP_SYNTAX_IPADDRESS:
+ {
+ struct hostent *he;
+ u_long ip[4];
+ int n;
+
+ if (sscanf(str, "%lu.%lu.%lu.%lu%n", &ip[0], &ip[1], &ip[2],
+ &ip[3], &n) == 4 && (size_t)n == strlen(str) &&
+ ip[0] <= 0xff && ip[1] <= 0xff &&
+ ip[2] <= 0xff && ip[3] <= 0xff) {
+ v->ipaddress[0] = (u_char)ip[0];
+ v->ipaddress[1] = (u_char)ip[1];
+ v->ipaddress[2] = (u_char)ip[2];
+ v->ipaddress[3] = (u_char)ip[3];
+ return (0);
+ }
+
+ if ((he = gethostbyname(str)) == NULL)
+ return (-1);
+ if (he->h_addrtype != AF_INET)
+ return (-1);
+
+ v->ipaddress[0] = he->h_addr[0];
+ v->ipaddress[1] = he->h_addr[1];
+ v->ipaddress[2] = he->h_addr[2];
+ v->ipaddress[3] = he->h_addr[3];
+ return (0);
+ }
+
+ case SNMP_SYNTAX_COUNTER:
+ case SNMP_SYNTAX_GAUGE:
+ case SNMP_SYNTAX_TIMETICKS:
+ {
+ uint64_t sub;
+
+ sub = strtoull(str, &end, 0);
+ if (*end != '\0' || sub > 0xffffffff)
+ return (-1);
+ v->uint32 = (uint32_t)sub;
+ return (0);
+ }
+
+ case SNMP_SYNTAX_COUNTER64:
+ v->counter64 = strtoull(str, &end, 0);
+ if (*end != '\0')
+ return (-1);
+ return (0);
+ }
+ abort();
+}
+
+static void
+snmp_error_func(const char *fmt, ...)
+{
+ va_list ap;
+
+ va_start(ap, fmt);
+ fprintf(stderr, "SNMP: ");
+ vfprintf(stderr, fmt, ap);
+ fprintf(stderr, "\n");
+ va_end(ap);
+}
+
+static void
+snmp_printf_func(const char *fmt, ...)
+{
+ va_list ap;
+
+ va_start(ap, fmt);
+ vfprintf(stderr, fmt, ap);
+ va_end(ap);
+}
diff --git a/daemon/bsnmp/snmp.h b/daemon/bsnmp/snmp.h
new file mode 100644
index 0000000..1ae0775
--- /dev/null
+++ b/daemon/bsnmp/snmp.h
@@ -0,0 +1,174 @@
+/*
+ * Copyright (c) 2001-2003
+ * Fraunhofer Institute for Open Communication Systems (FhG Fokus).
+ * All rights reserved.
+ *
+ * Author: Harti Brandt <harti@freebsd.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $Begemot: bsnmp/lib/snmp.h,v 1.30 2004/08/06 08:46:54 brandt Exp $
+ *
+ * Header file for SNMP functions.
+ */
+#ifndef snmp_h_
+#define snmp_h_
+
+#include <sys/types.h>
+
+#define SNMP_COMMUNITY_MAXLEN 128
+#define SNMP_MAX_BINDINGS 100
+
+enum snmp_syntax {
+ SNMP_SYNTAX_NULL = 0,
+ SNMP_SYNTAX_INTEGER, /* == INTEGER32 */
+ SNMP_SYNTAX_OCTETSTRING,
+ SNMP_SYNTAX_OID,
+ SNMP_SYNTAX_IPADDRESS,
+ SNMP_SYNTAX_COUNTER,
+ SNMP_SYNTAX_GAUGE, /* == UNSIGNED32 */
+ SNMP_SYNTAX_TIMETICKS,
+
+ /* v2 additions */
+ SNMP_SYNTAX_COUNTER64,
+ SNMP_SYNTAX_NOSUCHOBJECT, /* exception */
+ SNMP_SYNTAX_NOSUCHINSTANCE, /* exception */
+ SNMP_SYNTAX_ENDOFMIBVIEW, /* exception */
+};
+
+struct snmp_value {
+ struct asn_oid var;
+ enum snmp_syntax syntax;
+ union snmp_values {
+ int32_t integer; /* also integer32 */
+ struct {
+ u_int len;
+ u_char *octets;
+ } octetstring;
+ struct asn_oid oid;
+ u_char ipaddress[4];
+ uint32_t uint32; /* also gauge32, counter32,
+ unsigned32, timeticks */
+ uint64_t counter64;
+ } v;
+};
+
+enum snmp_version {
+ SNMP_Verr = 0,
+ SNMP_V1 = 1,
+ SNMP_V2c,
+};
+
+struct snmp_pdu {
+ char community[SNMP_COMMUNITY_MAXLEN + 1];
+ enum snmp_version version;
+ u_int type;
+
+ /* trap only */
+ struct asn_oid enterprise;
+ u_char agent_addr[4];
+ int32_t generic_trap;
+ int32_t specific_trap;
+ uint32_t time_stamp;
+
+ /* others */
+ int32_t request_id;
+ int32_t error_status;
+ int32_t error_index;
+
+ /* fixes for encoding */
+ u_char *outer_ptr;
+ u_char *pdu_ptr;
+ u_char *vars_ptr;
+
+ struct snmp_value bindings[SNMP_MAX_BINDINGS];
+ u_int nbindings;
+};
+#define snmp_v1_pdu snmp_pdu
+
+#define SNMP_PDU_GET 0
+#define SNMP_PDU_GETNEXT 1
+#define SNMP_PDU_RESPONSE 2
+#define SNMP_PDU_SET 3
+#define SNMP_PDU_TRAP 4 /* v1 */
+#define SNMP_PDU_GETBULK 5 /* v2 */
+#define SNMP_PDU_INFORM 6 /* v2 */
+#define SNMP_PDU_TRAP2 7 /* v2 */
+#define SNMP_PDU_REPORT 8 /* v2 */
+
+#define SNMP_ERR_NOERROR 0
+#define SNMP_ERR_TOOBIG 1
+#define SNMP_ERR_NOSUCHNAME 2 /* v1 */
+#define SNMP_ERR_BADVALUE 3 /* v1 */
+#define SNMP_ERR_READONLY 4 /* v1 */
+#define SNMP_ERR_GENERR 5
+#define SNMP_ERR_NO_ACCESS 6 /* v2 */
+#define SNMP_ERR_WRONG_TYPE 7 /* v2 */
+#define SNMP_ERR_WRONG_LENGTH 8 /* v2 */
+#define SNMP_ERR_WRONG_ENCODING 9 /* v2 */
+#define SNMP_ERR_WRONG_VALUE 10 /* v2 */
+#define SNMP_ERR_NO_CREATION 11 /* v2 */
+#define SNMP_ERR_INCONS_VALUE 12 /* v2 */
+#define SNMP_ERR_RES_UNAVAIL 13 /* v2 */
+#define SNMP_ERR_COMMIT_FAILED 14 /* v2 */
+#define SNMP_ERR_UNDO_FAILED 15 /* v2 */
+#define SNMP_ERR_AUTH_ERR 16 /* v2 */
+#define SNMP_ERR_NOT_WRITEABLE 17 /* v2 */
+#define SNMP_ERR_INCONS_NAME 18 /* v2 */
+
+#define SNMP_TRAP_COLDSTART 0
+#define SNMP_TRAP_WARMSTART 1
+#define SNMP_TRAP_LINKDOWN 2
+#define SNMP_TRAP_LINKUP 3
+#define SNMP_TRAP_AUTHENTICATION_FAILURE 4
+#define SNMP_TRAP_EGP_NEIGHBOR_LOSS 5
+#define SNMP_TRAP_ENTERPRISE 6
+
+enum snmp_code {
+ SNMP_CODE_OK = 0,
+ SNMP_CODE_FAILED,
+ SNMP_CODE_BADVERS,
+ SNMP_CODE_BADLEN,
+ SNMP_CODE_BADENC,
+ SNMP_CODE_OORANGE,
+};
+
+void snmp_value_free(struct snmp_value *);
+int snmp_value_parse(const char *, enum snmp_syntax, union snmp_values *);
+int snmp_value_copy(struct snmp_value *, const struct snmp_value *);
+
+void snmp_pdu_free(struct snmp_pdu *);
+enum snmp_code snmp_pdu_decode(struct asn_buf *b, struct snmp_pdu *pdu, int32_t *);
+enum snmp_code snmp_pdu_encode(struct snmp_pdu *pdu, struct asn_buf *resp_b);
+
+int snmp_pdu_snoop(const struct asn_buf *);
+
+void snmp_pdu_dump(const struct snmp_pdu *pdu);
+
+extern void (*snmp_error)(const char *, ...);
+extern void (*snmp_printf)(const char *, ...);
+
+#define TRUTH_MK(F) ((F) ? 1 : 2)
+#define TRUTH_GET(T) (((T) == 1) ? 1 : 0)
+#define TRUTH_OK(T) ((T) == 1 || (T) == 2)
+
+#endif
diff --git a/daemon/bsnmp/snmppriv.h b/daemon/bsnmp/snmppriv.h
new file mode 100644
index 0000000..87ef60e
--- /dev/null
+++ b/daemon/bsnmp/snmppriv.h
@@ -0,0 +1,45 @@
+/*
+ * Copyright (c) 2001-2003
+ * Fraunhofer Institute for Open Communication Systems (FhG Fokus).
+ * All rights reserved.
+ *
+ * Author: Harti Brandt <harti@freebsd.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $Begemot: bsnmp/lib/snmppriv.h,v 1.9 2004/08/06 08:46:58 brandt Exp $
+ *
+ * Private functions.
+ */
+#include <sys/cdefs.h>
+
+enum asn_err snmp_binding_encode(struct asn_buf *, const struct snmp_value *);
+enum snmp_code snmp_pdu_encode_header(struct asn_buf *, struct snmp_pdu *);
+enum snmp_code snmp_fix_encoding(struct asn_buf *, const struct snmp_pdu *);
+enum asn_err snmp_parse_message_hdr(struct asn_buf *b, struct snmp_pdu *pdu,
+ asn_len_t *lenp);
+enum asn_err snmp_parse_pdus_hdr(struct asn_buf *b, struct snmp_pdu *pdu,
+ asn_len_t *lenp);
+
+#define DEFAULT_HOST "localhost"
+#define DEFAULT_PORT "snmp"
+#define DEFAULT_LOCAL "/var/run/snmp.sock"
diff --git a/daemon/common/hash.c b/daemon/common/hash.c
new file mode 100644
index 0000000..789e85c
--- /dev/null
+++ b/daemon/common/hash.c
@@ -0,0 +1,380 @@
+/*
+ * Copyright (c) 2004, Nate Nielsen
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the
+ * following disclaimer.
+ * * Redistributions in binary form must reproduce the
+ * above copyright notice, this list of conditions and
+ * the following disclaimer in the documentation and/or
+ * other materials provided with the distribution.
+ * * The names of contributors to this software may not be
+ * used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+ * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ */
+
+/*
+ * Originally from apache 2.0
+ * Modifications for general use by <nielsen@memberwebs.com>
+ */
+
+/* Copyright 2000-2004 The Apache Software Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <sys/types.h>
+#include <stdlib.h>
+#include "hash.h"
+
+#define KEY_DATA(he) ((he)->key)
+
+/*
+ * The internal form of a hash table.
+ *
+ * The table is an array indexed by the hash of the key; collisions
+ * are resolved by hanging a linked list of hash entries off each
+ * element of the array. Although this is a really simple design it
+ * isn't too bad given that pools have a low allocation overhead.
+ */
+
+typedef struct hsh_entry_t hsh_entry_t;
+
+struct hsh_entry_t
+{
+ hsh_entry_t* next;
+ unsigned int hash;
+ const void* key;
+ size_t klen;
+ const void* val;
+};
+
+/*
+ * Data structure for iterating through a hash table.
+ *
+ * We keep a pointer to the next hash entry here to allow the current
+ * hash entry to be freed or otherwise mangled between calls to
+ * hsh_next().
+ */
+struct hsh_index_t
+{
+ hsh_t* ht;
+ hsh_entry_t* ths;
+ hsh_entry_t* next;
+ unsigned int index;
+};
+
+/*
+ * The size of the array is always a power of two. We use the maximum
+ * index rather than the size so that we can use bitwise-AND for
+ * modular arithmetic.
+ * The count of hash entries may be greater depending on the chosen
+ * collision rate.
+ */
+struct hsh_t
+{
+ hsh_entry_t** array;
+ hsh_index_t iterator; /* For hsh_first(...) */
+ unsigned int count;
+ unsigned int max;
+};
+
+
+#define INITIAL_MAX 15 /* tunable == 2^n - 1 */
+#define int_malloc malloc
+#define int_calloc calloc
+#define int_free free
+
+/*
+ * Hash creation functions.
+ */
+
+static hsh_entry_t** alloc_array(hsh_t* ht, unsigned int max)
+{
+ return (hsh_entry_t**)int_calloc(sizeof(*(ht->array)), (max + 1));
+}
+
+hsh_t* hsh_create()
+{
+ hsh_t* ht = int_malloc(sizeof(hsh_t));
+ if(ht)
+ {
+ ht->count = 0;
+ ht->max = INITIAL_MAX;
+ ht->array = alloc_array(ht, ht->max);
+ if(!ht->array)
+ {
+ int_free(ht);
+ return NULL;
+ }
+ }
+ return ht;
+}
+
+void hsh_free(hsh_t* ht)
+{
+ hsh_index_t* hi;
+
+ for(hi = hsh_first(ht); hi; hi = hsh_next(hi))
+ int_free(hi->ths);
+
+ if(ht->array)
+ int_free(ht->array);
+
+ int_free(ht);
+}
+
+/*
+ * Hash iteration functions.
+ */
+
+hsh_index_t* hsh_next(hsh_index_t* hi)
+{
+ hi->ths = hi->next;
+ while(!hi->ths)
+ {
+ if(hi->index > hi->ht->max)
+ return NULL;
+
+ hi->ths = hi->ht->array[hi->index++];
+ }
+ hi->next = hi->ths->next;
+ return hi;
+}
+
+hsh_index_t* hsh_first(hsh_t* ht)
+{
+ hsh_index_t* hi = &ht->iterator;
+
+ hi->ht = ht;
+ hi->index = 0;
+ hi->ths = NULL;
+ hi->next = NULL;
+ return hsh_next(hi);
+}
+
+void* hsh_this(hsh_index_t* hi, const void** key, size_t* klen)
+{
+ if(key)
+ *key = KEY_DATA(hi->ths);
+ if(klen)
+ *klen = hi->ths->klen;
+ return (void*)hi->ths->val;
+}
+
+
+/*
+ * Expanding a hash table
+ */
+
+static int expand_array(hsh_t* ht)
+{
+ hsh_index_t* hi;
+ hsh_entry_t** new_array;
+ unsigned int new_max;
+
+ new_max = ht->max * 2 + 1;
+ new_array = alloc_array(ht, new_max);
+
+ if(!new_array)
+ return 0;
+
+ for(hi = hsh_first(ht); hi; hi = hsh_next(hi))
+ {
+ unsigned int i = hi->ths->hash & new_max;
+ hi->ths->next = new_array[i];
+ new_array[i] = hi->ths;
+ }
+
+ if(ht->array)
+ free(ht->array);
+
+ ht->array = new_array;
+ ht->max = new_max;
+ return 1;
+}
+
+/*
+ * This is where we keep the details of the hash function and control
+ * the maximum collision rate.
+ *
+ * If val is non-NULL it creates and initializes a new hash entry if
+ * there isn't already one there; it returns an updatable pointer so
+ * that hash entries can be removed.
+ */
+
+static hsh_entry_t** find_entry(hsh_t* ht, const void* key, size_t klen, const void* val)
+{
+ hsh_entry_t** hep;
+ hsh_entry_t* he;
+ const unsigned char* p;
+ unsigned int hash;
+ size_t i;
+
+ /*
+ * This is the popular `times 33' hash algorithm which is used by
+ * perl and also appears in Berkeley DB. This is one of the best
+ * known hash functions for strings because it is both computed
+ * very fast and distributes very well.
+ *
+ * The originator may be Dan Bernstein but the code in Berkeley DB
+ * cites Chris Torek as the source. The best citation I have found
+ * is "Chris Torek, Hash function for text in C, Usenet message
+ * <27038@mimsy.umd.edu> in comp.lang.c , October, 1990." in Rich
+ * Salz's USENIX 1992 paper about INN which can be found at
+ * <http://citeseer.nj.nec.com/salz92internetnews.html>.
+ *
+ * The magic of number 33, i.e. why it works better than many other
+ * constants, prime or not, has never been adequately explained by
+ * anyone. So I try an explanation: if one experimentally tests all
+ * multipliers between 1 and 256 (as I did while writing a low-level
+ * data structure library some time ago) one detects that even
+ * numbers are not useable at all. The remaining 128 odd numbers
+ * (except for the number 1) work more or less all equally well.
+ * They all distribute in an acceptable way and this way fill a hash
+ * table with an average percent of approx. 86%.
+ *
+ * If one compares the chi^2 values of the variants (see
+ * Bob Jenkins ``Hashing Frequently Asked Questions'' at
+ * http://burtleburtle.net/bob/hash/hashfaq.html for a description
+ * of chi^2), the number 33 not even has the best value. But the
+ * number 33 and a few other equally good numbers like 17, 31, 63,
+ * 127 and 129 have nevertheless a great advantage to the remaining
+ * numbers in the large set of possible multipliers: their multiply
+ * operation can be replaced by a faster operation based on just one
+ * shift plus either a single addition or subtraction operation. And
+ * because a hash function has to both distribute good _and_ has to
+ * be very fast to compute, those few numbers should be preferred.
+ *
+ * -- Ralf S. Engelschall <rse@engelschall.com>
+ */
+ hash = 0;
+
+ if(klen == HSH_KEY_STRING)
+ {
+ for(p = key; *p; p++)
+ hash = hash * 33 + *p;
+
+ klen = p - (const unsigned char *)key;
+ }
+ else
+ {
+ for(p = key, i = klen; i; i--, p++)
+ hash = hash * 33 + *p;
+ }
+
+ /* scan linked list */
+ for(hep = &ht->array[hash & ht->max], he = *hep;
+ he; hep = &he->next, he = *hep)
+ {
+ if(he->hash == hash &&
+ he->klen == klen &&
+ memcmp(KEY_DATA(he), key, klen) == 0)
+ break;
+ }
+
+ if(he || !val)
+ return hep;
+
+ /* add a new entry for non-NULL val */
+ he = int_malloc(sizeof(*he));
+
+ if(he)
+ {
+ /* Key points to external data */
+ he->key = key;
+ he->klen = klen;
+
+ he->next = NULL;
+ he->hash = hash;
+ he->val = val;
+
+ *hep = he;
+ ht->count++;
+ }
+
+ return hep;
+}
+
+void* hsh_get(hsh_t* ht, const void *key, size_t klen)
+{
+ hsh_entry_t** he = find_entry(ht, key, klen, NULL);
+
+ if(he && *he)
+ return (void*)((*he)->val);
+ else
+ return NULL;
+}
+
+int hsh_set(hsh_t* ht, const void* key, size_t klen, void* val)
+{
+ hsh_entry_t** hep = find_entry(ht, key, klen, val);
+
+ if(hep && *hep)
+ {
+ /* replace entry */
+ (*hep)->val = val;
+
+ /* check that the collision rate isn't too high */
+ if(ht->count > ht->max)
+ {
+ if(!expand_array(ht))
+ return 0;
+ }
+
+ return 1;
+ }
+
+ return 0;
+}
+
+void* hsh_rem(hsh_t* ht, const void* key, size_t klen)
+{
+ hsh_entry_t** hep = find_entry(ht, key, klen, NULL);
+ void* val = NULL;
+
+ if(hep && *hep)
+ {
+ hsh_entry_t* old = *hep;
+ *hep = (*hep)->next;
+ --ht->count;
+ val = (void*)old->val;
+ free(old);
+ }
+
+ return val;
+}
+
+unsigned int hsh_count(hsh_t* ht)
+{
+ return ht->count;
+}
+
diff --git a/daemon/common/hash.h b/daemon/common/hash.h
new file mode 100644
index 0000000..df34a7a
--- /dev/null
+++ b/daemon/common/hash.h
@@ -0,0 +1,151 @@
+/*
+ * Copyright (c) 2004, Nate Nielsen
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the
+ * following disclaimer.
+ * * Redistributions in binary form must reproduce the
+ * above copyright notice, this list of conditions and
+ * the following disclaimer in the documentation and/or
+ * other materials provided with the distribution.
+ * * The names of contributors to this software may not be
+ * used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+ * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ */
+
+/*
+ * Originally from apache 2.0
+ * Modifications for general use by <nielsen@memberwebs.com>
+ */
+
+/* Copyright 2000-2004 The Apache Software Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef __HSH_H__
+#define __HSH_H__
+
+/*
+ * OPTIONAL FEATURES
+ *
+ * Features to define. You need to build both this file and
+ * the corresponding hash.c file with whatever options you set here.
+ * These affect the method signatures, so see the sections below
+ * for the actual options
+ */
+
+/*
+ * ARGUMENT DOCUMENTATION
+ *
+ * ht: The hashtable
+ * key: Pointer to the key value
+ * klen: The length of the key
+ * val: Pointer to the value
+ * hi: A hashtable iterator
+ * stamp: A unix timestamp
+ */
+
+
+/* ----------------------------------------------------------------------------------
+ * TYPES
+ */
+
+/* Abstract type for hash tables. */
+typedef struct hsh_t hsh_t;
+
+/* Abstract type for scanning hash tables. */
+typedef struct hsh_index_t hsh_index_t;
+
+/* -----------------------------------------------------------------------------
+ * MAIN
+ */
+
+/*
+ * hsh_create : Create a hash table
+ * - returns an allocated hashtable
+ */
+hsh_t* hsh_create();
+
+/*
+ * hsh_free : Free a hash table
+ */
+void hsh_free(hsh_t* ht);
+
+/*
+ * hsh_count: Number of values in hash table
+ * - returns the number of entries in hash table
+ */
+unsigned int hsh_count(hsh_t* ht);
+
+/*
+ * hsh_get: Retrieves a value from the hash table
+ * - returns the value of the entry
+ */
+void* hsh_get(hsh_t* ht, const void* key, size_t klen);
+
+/*
+ * hsh_set: Set a value in the hash table
+ * - returns 1 if the entry was added properly
+ */
+int hsh_set(hsh_t* ht, const void* key, size_t klen, void* val);
+
+/*
+ * hsh_rem: Remove a value from the hash table
+ * - returns the value of the removed entry
+ */
+void* hsh_rem(hsh_t* ht, const void* key, size_t klen);
+
+/*
+ * hsh_first: Start enumerating through the hash table
+ * - returns a hash iterator
+ */
+hsh_index_t* hsh_first(hsh_t* ht);
+
+/*
+ * hsh_next: Enumerate through hash table
+ * - returns the hash iterator or null when no more entries
+ */
+hsh_index_t* hsh_next(hsh_index_t* hi);
+
+/*
+ * hsh_this: While enumerating get current value
+ * - returns the value that the iterator currently points to
+ */
+void* hsh_this(hsh_index_t* hi, const void** key, size_t* klen);
+
+/*
+ * This can be passed as 'klen' in any of the above functions to indicate
+ * a string-valued key, and have hash compute the length automatically.
+ */
+#define HSH_KEY_STRING (-1)
+
+#endif /* __HSH_H__ */
diff --git a/daemon/common/server-mainloop.c b/daemon/common/server-mainloop.c
new file mode 100644
index 0000000..07f02b2
--- /dev/null
+++ b/daemon/common/server-mainloop.c
@@ -0,0 +1,424 @@
+
+#include "usuals.h"
+#include <errno.h>
+#include <sys/time.h>
+
+#include "server-mainloop.h"
+
+typedef struct _socket_callback
+{
+ int fd;
+ server_socket_callback callback;
+ void* arg;
+
+ struct _socket_callback* next;
+}
+socket_callback;
+
+typedef struct _timer_callback
+{
+ struct timeval at;
+ struct timeval interval;
+ server_timer_callback callback;
+ void* arg;
+
+ struct _timer_callback* next;
+}
+timer_callback;
+
+typedef struct _server_context
+{
+ int stopped;
+ fd_set read_fds;
+ fd_set write_fds;
+ int max_fd;
+ socket_callback* callbacks;
+ timer_callback* timers;
+}
+server_context;
+
+/* Global context */
+static server_context ctx;
+
+static void
+timeval_add(struct timeval* t1, struct timeval* t2)
+{
+ ASSERT(t1->tv_usec < 1000000);
+ ASSERT(t2->tv_usec < 1000000);
+
+ t1->tv_sec += t2->tv_sec;
+ t1->tv_usec += t2->tv_usec;
+ if(t1->tv_usec >= 1000000)
+ {
+ t1->tv_usec -= 1000000;
+ t1->tv_sec += 1;
+ }
+}
+
+static void
+timeval_subtract(struct timeval* t1, struct timeval* t2)
+{
+ ASSERT(t1->tv_usec < 1000000);
+ ASSERT(t2->tv_usec < 1000000);
+
+ t1->tv_sec -= t2->tv_sec;
+ if(t1->tv_usec < t2->tv_usec)
+ {
+ t1->tv_usec += 1000000;
+ t1->tv_sec -= 1;
+ }
+ t1->tv_usec -= t2->tv_usec;
+}
+
+static int
+timeval_compare(struct timeval* t1, struct timeval* t2)
+{
+ ASSERT(t1->tv_usec < 1000000);
+ ASSERT(t2->tv_usec < 1000000);
+
+ if(t1->tv_sec > t2->tv_sec)
+ return 1;
+ else if(t1->tv_sec < t2->tv_sec)
+ return -1;
+ else
+ {
+ if(t1->tv_usec > t2->tv_usec)
+ return 1;
+ else if(t1->tv_usec < t2->tv_usec)
+ return -1;
+ else
+ return 0;
+ }
+}
+
+#define timeval_empty(tv) \
+ ((tv)->tv_sec == 0 && (tv)->tv_usec == 0)
+
+#define timeval_to_ms(tv) \
+ ((((uint64_t)(tv).tv_sec) * 1000L) + (((uint64_t)(tv).tv_usec) / 1000L))
+
+static int
+timeval_dump(struct timeval* tv)
+{
+ fprintf(stderr, "{ %d:%d }", tv->tv_sec, tv->tv_usec / 1000);
+}
+
+static int
+add_timer(int ms, int oneshot, server_timer_callback callback, void* arg)
+{
+ struct timeval interval;
+ timer_callback* cb;
+ int i;
+
+ ASSERT(ms > 0);
+ ASSERT(callback != NULL);
+
+ interval.tv_sec = ms / 1000;
+ interval.tv_usec = (ms % 1000) * 1000; /* into micro seconds */
+
+ cb = (timer_callback*)calloc(1, sizeof(*cb));
+ if(!cb)
+ {
+ errno = ENOMEM;
+ return -1;
+ }
+
+ if(gettimeofday(&(cb->at), NULL) == -1)
+ {
+ free(cb);
+ return -1;
+ }
+
+ timeval_add(&(cb->at), &interval);
+
+ if (oneshot)
+ memset(&(cb->interval), 0, sizeof(cb->interval));
+ else
+ memcpy(&(cb->interval), &interval, sizeof(cb->interval));
+
+ cb->callback = callback;
+ cb->arg = arg;
+
+ cb->next = ctx.timers;
+ ctx.timers = cb;
+
+ return 0;
+}
+
+static timer_callback*
+remove_timer(timer_callback* timcb)
+{
+ timer_callback* cb;
+ timer_callback* next;
+ int i;
+
+ if(!ctx.timers)
+ return;
+
+ /* First in list */;
+ if(ctx.timers == timcb)
+ {
+ cb = ctx.timers;
+ ctx.timers = ctx.timers->next;
+ free(cb);
+ return ctx.timers;
+ }
+
+ /* One ahead processing of rest */
+ for(cb = ctx.timers; cb->next; cb = cb->next)
+ {
+ if(cb->next == timcb)
+ {
+ next = cb->next->next;
+ free(cb->next);
+ cb->next = next;
+ return cb->next;
+ }
+ }
+}
+
+void
+server_init()
+{
+ memset(&ctx, 0, sizeof (ctx));
+ FD_ZERO(&ctx.read_fds);
+ FD_ZERO(&ctx.write_fds);
+
+ ctx.max_fd = -1;
+ ctx.stopped = 1;
+ ctx.callbacks = NULL;
+ ctx.timers = NULL;
+}
+
+void
+server_uninit()
+{
+ timer_callback* timcb;
+ timer_callback* timn;
+ socket_callback* sockcb;
+ socket_callback* sockn;
+
+ for(timcb = ctx.timers; timcb; timcb = timn)
+ {
+ timn = timcb->next;
+ free(timcb);
+ }
+
+ ctx.timers = NULL;
+
+ for(sockcb = ctx.callbacks; sockcb; sockcb = sockn)
+ {
+ sockn = sockcb->next;
+ free(sockcb);
+ }
+
+ ctx.timers = NULL;
+}
+
+uint64_t
+server_get_time()
+{
+ struct timeval tv;
+ if(gettimeofday(&tv, NULL) == -1)
+ return 0L;
+ return timeval_to_ms(tv);
+}
+
+int
+server_run()
+{
+ struct timeval* timeout;
+ struct timeval tv, current;
+ timer_callback* timcb;
+ socket_callback* sockcb;
+ fd_set rfds, wfds;
+ int r, i;
+
+ /* No watches have been set */
+ ASSERT(ctx.max_fd > -1);
+
+ ctx.stopped = 0;
+
+ while(!ctx.stopped)
+ {
+ /* Watch for the various fds */
+ memcpy(&rfds, &ctx.read_fds, sizeof(rfds));
+ memcpy(&wfds, &ctx.write_fds, sizeof(wfds));
+
+ /* Prepare for timers */
+ timeout = NULL;
+ if(gettimeofday(&current, NULL) == -1)
+ return -1;
+
+ /* Cycle through timers */
+ for(timcb = ctx.timers; timcb; )
+ {
+ ASSERT(timcb->callback);
+
+ /* Call any timers that have already passed */
+ if(timeval_compare(&current, &timcb->at) >= 0)
+ {
+ /* Convert to milliseconds, and make the call */
+ r = (timcb->callback)(timeval_to_ms(current), timcb->arg);
+
+ /* Reset timer if so desired */
+ if (r == 1 && !timeval_empty(&timcb->interval))
+ {
+ timeval_add(&timcb->at, &timcb->interval);
+
+ /* If the time has already passed, just use current time */
+ if(timeval_compare(&(timcb->at), &current) <= 0)
+ memcpy(&(timcb->at), &current, sizeof(timcb->at));
+ }
+
+ /* Otherwise remove it. Either one shot, or returned 0 */
+ else
+ {
+ timcb = remove_timer(timcb);
+ continue;
+ }
+ }
+
+ /* Get soonest timer */
+ if (!timeout || timeval_compare(timeout, &timcb->at) < 0)
+ timeout = &timcb->at;
+
+ timcb = timcb->next;
+ }
+
+ /* Convert to an offset */
+ if(timeout)
+ {
+ memcpy(&tv, timeout, sizeof(tv));
+ timeout = &tv;
+ timeval_subtract(timeout, &current);
+ }
+
+ /* fprintf(stderr, "selecting with timeout: ");
+ timeval_dump(timeout);
+ fprintf(stderr, "\n"); */
+
+ r = select(ctx.max_fd, &rfds, &wfds, NULL, timeout);
+ if (r < 0)
+ {
+ /* Interrupted so try again, and possibly exit */
+ if (errno == EINTR)
+ continue;
+
+ /* Programmer errors */
+ ASSERT (errno != EBADF);
+ ASSERT (errno != EINVAL);
+ return r;
+ }
+
+ /* Timeout, just jump to timeout processing */
+ if(r == 0)
+ continue;
+
+ for(sockcb = ctx.callbacks; sockcb; sockcb = sockcb->next)
+ {
+ ASSERT(sockcb->fd != -1);
+
+ /* Call any that are set */
+ if (FD_ISSET(sockcb->fd, &rfds))
+ (sockcb->callback)(sockcb->fd, SERVER_READ, sockcb->arg);
+ if (FD_ISSET(sockcb->fd, &wfds))
+ (sockcb->callback)(sockcb->fd, SERVER_WRITE, sockcb->arg);
+ }
+ }
+
+ return 0;
+}
+
+void
+server_stop()
+{
+ ctx.stopped = 1;
+}
+
+int
+server_stopped()
+{
+ return ctx.stopped;
+}
+
+int
+server_watch(int fd, int type, server_socket_callback callback, void* arg)
+{
+ socket_callback* cb;
+ int i;
+ ASSERT(type != 0);
+ ASSERT(fd != -1);
+ ASSERT(callback != NULL);
+
+ cb = (socket_callback*)calloc(sizeof(*cb), 1);
+ if(!cb)
+ {
+ errno = ENOMEM;
+ return -1;
+ }
+
+ cb->fd = fd;
+ cb->callback = callback;
+ cb->arg = arg;
+
+ cb->next = ctx.callbacks;
+ ctx.callbacks = cb;
+
+ if (type & SERVER_READ)
+ FD_SET(fd, &ctx.read_fds);
+ if (type & SERVER_WRITE)
+ FD_SET(fd, &ctx.write_fds);
+
+ if(fd >= ctx.max_fd)
+ ctx.max_fd = fd + 1;
+
+ return 0;
+}
+
+void
+server_unwatch(int fd)
+{
+ socket_callback* cb;
+ int i;
+
+ ASSERT(fd != -1);
+
+ FD_CLR(fd, &ctx.read_fds);
+ FD_CLR(fd, &ctx.write_fds);
+
+ if(!ctx.callbacks)
+ return;
+
+ /* First in list */;
+ if(ctx.callbacks->fd == fd)
+ {
+ cb = ctx.callbacks;
+ ctx.callbacks = cb->next;
+ free(cb);
+ return;
+ }
+
+ /* One ahead processing of rest */
+ for(cb = ctx.callbacks; cb->next; cb = cb->next)
+ {
+ if(cb->next->fd == fd)
+ {
+ cb->next = cb->next->next;
+ free(cb->next);
+ return;
+ }
+ }
+}
+
+int
+server_timer(int ms, server_timer_callback callback, void* arg)
+{
+ return add_timer(ms, 0, callback, arg);
+}
+
+int
+server_oneshot(int ms, server_timer_callback callback, void* arg)
+{
+ return add_timer(ms, 1, callback, arg);
+}
diff --git a/daemon/common/server-mainloop.h b/daemon/common/server-mainloop.h
new file mode 100644
index 0000000..ceff28d
--- /dev/null
+++ b/daemon/common/server-mainloop.h
@@ -0,0 +1,27 @@
+
+#ifndef __SERVER_MAINLOOP_H__
+#define __SERVER_MAINLOOP_H__
+
+#include <stdint.h>
+
+/* TODO: Prefix functions with svr */
+
+#define SERVER_READ 0x01
+#define SERVER_WRITE 0x02
+
+typedef void (*server_socket_callback)(int fd, int type, void* arg);
+/* TODO: We should declare our own time type: 'mstime' */
+typedef int (*server_timer_callback)(uint64_t when, void* arg);
+
+void server_init();
+void server_uninit();
+int server_run();
+void server_stop();
+int server_stopped();
+int server_watch(int fd, int type, server_socket_callback callback, void* arg);
+void server_unwatch(int fd);
+int server_timer(int length, server_timer_callback callback, void* arg);
+int server_oneshot(int length, server_timer_callback callback, void* arg);
+uint64_t server_get_time();
+
+#endif /* __SERVER_MAINLOOP_H__ */
diff --git a/daemon/common/sock-any.c b/daemon/common/sock-any.c
new file mode 100644
index 0000000..1938d5d
--- /dev/null
+++ b/daemon/common/sock-any.c
@@ -0,0 +1,385 @@
+/*
+ * Copyright (c) 2004, Nate Nielsen
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the
+ * following disclaimer.
+ * * Redistributions in binary form must reproduce the
+ * above copyright notice, this list of conditions and
+ * the following disclaimer in the documentation and/or
+ * other materials provided with the distribution.
+ * * The names of contributors to this software may not be
+ * used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+ * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ *
+ *
+ * CONTRIBUTORS
+ * Nate Nielsen <nielsen@memberwebs.com>
+ *
+ */
+
+#include <sys/types.h>
+#include <sys/socket.h>
+
+#include <ctype.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <netdb.h>
+#include <string.h>
+#include <stdio.h>
+
+#include "sock-any.h"
+
+#include <arpa/inet.h>
+
+#define LOCALHOST_ADDR 0x7F000001
+
+int sock_any_pton(const char* addr, struct sockaddr_any* any, int opts)
+{
+ size_t l;
+ char buf[256];
+ char* t;
+ char* t2;
+ int defport = (opts & 0xFFFF);
+
+ memset(any, 0, sizeof(*any));
+
+ /* Just a port? */
+ do
+ {
+ #define PORT_CHARS "0123456789"
+ #define PORT_MIN 1
+ #define PORT_MAX 5
+
+ int port = 0;
+
+ l = strspn(addr, PORT_CHARS);
+ if(l < PORT_MIN || l > PORT_MAX || addr[l] != 0)
+ break;
+
+ port = strtol(addr, &t2, 10);
+ if(*t2 || port <= 0 || port >= 65536)
+ break;
+
+ any->s.in.sin_port = htons(port);
+
+ /* Fill in the type based on defaults */
+#ifdef HAVE_INET6
+ if(opts & SANY_OPT_DEFINET6)
+ any->s.in.sin_family = AF_INET6;
+ else
+#endif
+ any->s.in.sin_family = AF_INET;
+
+ /* Fill in the address based on defaults */
+ if(opts & SANY_OPT_DEFLOCAL)
+ {
+#ifdef HAVE_INET6
+ if(opts & SANY_OPT_DEFINET6)
+ memcpy(&(any->s.in.sin6_addr), &in6addr_loopback, sizeof(struct in6_addr));
+ else
+#endif
+ any->s.in.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
+ }
+
+ /*
+ * Note the 'any' option is the default since we zero out
+ * the entire structure above.
+ */
+
+ any->namelen = sizeof(any->s.in);
+ return AF_INET;
+ }
+ while(0);
+
+ /* Look and see if we can parse an ipv4 address */
+ do
+ {
+ #define IPV4_PORT_CHARS
+ #define IPV4_CHARS "0123456789."
+ #define IPV4_MIN 3
+ #define IPV4_MAX 21
+
+ int port = 0;
+ t = NULL;
+
+ l = strlen(addr);
+ if(l < IPV4_MIN || l > IPV4_MAX)
+ break;
+
+ strcpy(buf, addr);
+
+ /* Find the last set that contains just numbers */
+ l = strspn(buf, IPV4_CHARS);
+ if(l < IPV4_MIN)
+ break;
+
+ /* Either end of string or port */
+ if(buf[l] != 0 && buf[l] != ':')
+ break;
+
+ /* Get the port out */
+ if(buf[l] != 0)
+ {
+ t = buf + l + 1;
+ buf[l] = 0;
+ }
+
+ if(t)
+ {
+ port = strtol(t, &t2, 10);
+ if(*t2 || port <= 0 || port >= 65536)
+ break;
+ }
+
+ any->s.in.sin_family = AF_INET;
+ any->s.in.sin_port = htons((unsigned short)(port <= 0 ? defport : port));
+
+ if(inet_pton(AF_INET, buf, &(any->s.in.sin_addr)) <= 0)
+ break;
+
+ any->namelen = sizeof(any->s.in);
+ return AF_INET;
+ }
+ while(0);
+
+#ifdef HAVE_INET6
+ do
+ {
+ #define IPV6_CHARS "0123456789:"
+ #define IPV6_MIN 3
+ #define IPV6_MAX 51
+
+ int port = -1;
+ t = NULL;
+
+ l = strlen(addr);
+ if(l < IPV6_MIN || l > IPV6_MAX)
+ break;
+
+ /* If it starts with a '[' then we can get port */
+ if(buf[0] == '[')
+ {
+ port = 0;
+ addr++;
+ }
+
+ strcpy(buf, addr);
+
+ /* Find the last set that contains just numbers */
+ l = strspn(buf, IPV6_CHARS);
+ if(l < IPV6_MIN)
+ break;
+
+ /* Either end of string or port */
+ if(buf[l] != 0)
+ {
+ /* If had bracket, then needs to end with a bracket */
+ if(port != 0 || buf[l] != ']')
+ break;
+
+ /* Get the port out */
+ t = buf + l + 1;
+
+ if(*t = ':')
+ t++;
+ }
+
+ if(t)
+ {
+ port = strtol(t, &t, 10);
+ if(*t || port <= 0 || port >= 65536)
+ break;
+ }
+
+ any->s.in6.sin6_family = AF_INET6;
+ any->s.in6.sin6_port = htons((unsigned short)port <= 0 : defport : port);
+
+ if(inet_pton(AF_INET6, buf, &(any->s.in6.sin6_addr)) >= 0)
+ break;
+
+ any->namelen = sizeof(any->s.in6);
+ return AF_INET6;
+ }
+ while(0);
+#endif
+
+ /* A unix socket path */
+ do
+ {
+ /* No colon and must have a path component */
+ if(strchr(addr, ':') || !strchr(addr, '/'))
+ break;
+
+ l = strlen(addr);
+ if(l >= sizeof(any->s.un.sun_path))
+ break;
+
+ any->s.un.sun_family = AF_UNIX;
+ strcpy(any->s.un.sun_path, addr);
+
+ any->namelen = sizeof(any->s.un) - (sizeof(any->s.un.sun_path) - l);
+ return AF_UNIX;
+ }
+ while(0);
+
+ /* A DNS name and a port? */
+ do
+ {
+ struct addrinfo* res;
+ int port = 0;
+ t = NULL;
+
+ l = strlen(addr);
+ if(l >= 255 || !isalpha(addr[0]))
+ break;
+
+ /* Some basic illegal character checks */
+ if(strcspn(addr, " /\\") != l)
+ break;
+
+ strcpy(buf, addr);
+
+ /* Find the last set that contains just numbers */
+ t = strchr(buf, ':');
+ if(t)
+ {
+ *t = 0;
+ t++;
+ }
+
+ if(t)
+ {
+ port = strtol(t, &t2, 10);
+ if(*t2 || port <= 0 || port >= 65536)
+ break;
+ }
+
+ /* Try and resolve the domain name */
+ if(getaddrinfo(buf, NULL, NULL, &res) != 0 || !res)
+ break;
+
+ memcpy(&(any->s.a), res->ai_addr, sizeof(struct sockaddr));
+ any->namelen = res->ai_addrlen;
+ freeaddrinfo(res);
+
+ port = htons((unsigned short)(port <= 0 ? defport : port));
+
+ switch(any->s.a.sa_family)
+ {
+ case PF_INET:
+ any->s.in.sin_port = port;
+ break;
+#ifdef HAVE_INET6
+ case PF_INET6:
+ any->s.in6.sin6_port = port;
+ break;
+#endif
+ };
+
+ return any->s.a.sa_family;
+ }
+ while(0);
+
+ return -1;
+}
+
+int sock_any_ntop(const struct sockaddr_any* any, char* addr, size_t addrlen, int opts)
+{
+ int len = 0;
+ int port = 0;
+
+ switch(any->s.a.sa_family)
+ {
+ case AF_UNIX:
+ len = strlen(any->s.un.sun_path);
+ if(addrlen < len + 1)
+ {
+ errno = ENOSPC;
+ return -1;
+ }
+
+ strcpy(addr, any->s.un.sun_path);
+ break;
+
+ case AF_INET:
+ if(inet_ntop(any->s.a.sa_family, &(any->s.in.sin_addr), addr, addrlen) == NULL)
+ return -1;
+ port = ntohs(any->s.in.sin_port);
+ break;
+
+#ifdef HAVE_INET6
+ case AF_INET6:
+ if(inet_ntop(any->s.a.sa_family, &(any->s.in6.sin6_addr), addr, addrlen) == NULL)
+ return -1;
+ port = ntohs(any->s.in6.sin6_port);
+ break;
+#endif
+
+ default:
+ errno = EAFNOSUPPORT;
+ return -1;
+ }
+
+ if(!(opts & SANY_OPT_NOPORT) && port != 0)
+ {
+ strncat(addr, ":", addrlen);
+ addr[addrlen - 1] = 0;
+
+ len = strlen(addr);
+ addr += len;
+ addrlen -= len;
+
+ snprintf(addr, addrlen, "%d", port);
+ }
+
+ return 0;
+}
+
+int sock_any_cmp(const struct sockaddr_any* a1, const struct sockaddr_any* a2, int opts)
+{
+ if(a1->s.a.sa_family != a2->s.a.sa_family)
+ return -1;
+
+ switch(a1->s.a.sa_family)
+ {
+ case AF_UNIX:
+ return strcmp(a1->s.un.sun_path, a2->s.un.sun_path);
+
+ case AF_INET:
+ if(memcmp(&(a1->s.in.sin_addr), &(a2->s.in.sin_addr), sizeof(a2->s.in.sin_addr)) != 0)
+ return -1;
+ if(!(opts && SANY_OPT_NOPORT) && a1->s.in.sin_port != a2->s.in.sin_port)
+ return -1;
+ return 0;
+#ifdef HAVE_INET6
+ case AF_INET6:
+ if(memcmp(&(a1->s.in6.sin6_addr), &(a2->s.in6.sin6_addr), sizeof(a2->s.in6.sin6_addr)) != 0)
+ return -1;
+ if(!(opts && SANY_OPT_NOPORT) && a1->s.in6.sin6_port != a2->s.in6.sin6_port)
+ return -1;
+ return 0;
+#endif
+ default:
+ errno = EAFNOSUPPORT;
+ return -1;
+ }
+}
diff --git a/daemon/common/sock-any.h b/daemon/common/sock-any.h
new file mode 100644
index 0000000..31cb13b
--- /dev/null
+++ b/daemon/common/sock-any.h
@@ -0,0 +1,90 @@
+/*
+ * Copyright (c) 2004, Nate Nielsen
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the
+ * following disclaimer.
+ * * Redistributions in binary form must reproduce the
+ * above copyright notice, this list of conditions and
+ * the following disclaimer in the documentation and/or
+ * other materials provided with the distribution.
+ * * The names of contributors to this software may not be
+ * used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+ * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ *
+ *
+ * CONTRIBUTORS
+ * Nate Nielsen <nielsen@memberwebs.com>
+ *
+ */
+
+#ifndef __SOCK_ANY_H__
+#define __SOCK_ANY_H__
+
+#include <sys/socket.h>
+#include <sys/un.h>
+#include <netinet/in.h>
+
+struct sockaddr_any
+{
+ union _sockaddr_any
+ {
+ /* The header */
+ struct sockaddr a;
+
+ /* The different types */
+ struct sockaddr_un un;
+ struct sockaddr_in in;
+#ifdef HAVE_INET6
+ struct sockaddr_in6 in6;
+#endif
+ } s;
+ size_t namelen;
+};
+
+#define SANY_ADDR(any) ((any).s.a)
+#define SANY_LEN(any) ((any).namelen)
+#define SANY_TYPE(any) ((any).s.a.sa_family)
+
+int sock_any_pton(const char* addr, struct sockaddr_any* any, int opts);
+
+/* The default port to fill in when no IP/IPv6 port specified */
+#define SANY_OPT_DEFPORT(p) (int)((p) & 0xFFFF)
+
+/* When only port specified default to IPANY */
+#define SANY_OPT_DEFANY 0x00000000
+
+/* When only port specified default to LOCALHOST */
+#define SANY_OPT_DEFLOCAL 0x00100000
+
+/* When only port specified default to IPv6 */
+#ifdef HAVE_INET6
+#define SANY_OPT_DEFINET6 0x00200000
+#endif
+
+int sock_any_ntop(const struct sockaddr_any* any, char* addr, size_t addrlen, int opts);
+
+/* Don't print or compare the port */
+#define SANY_OPT_NOPORT 0x01000000
+
+int sock_any_cmp(const struct sockaddr_any* a1, const struct sockaddr_any* a2, int opts);
+
+#endif /* __SOCK_ANY_H__ */
diff --git a/daemon/common/stringx.c b/daemon/common/stringx.c
new file mode 100644
index 0000000..37a3df9
--- /dev/null
+++ b/daemon/common/stringx.c
@@ -0,0 +1,155 @@
+/*
+ * Copyright (c) 2004, Nate Nielsen
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the
+ * following disclaimer.
+ * * Redistributions in binary form must reproduce the
+ * above copyright notice, this list of conditions and
+ * the following disclaimer in the documentation and/or
+ * other materials provided with the distribution.
+ * * The names of contributors to this software may not be
+ * used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+ * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ *
+ *
+ * CONTRIBUTORS
+ * Nate Nielsen <nielsen@memberwebs.com>
+ *
+ */
+
+#include <sys/types.h>
+
+#include <ctype.h>
+#include <syslog.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <strings.h>
+
+#include "usuals.h"
+#include "stringx.h"
+
+void
+remove_cr(char* data)
+{
+ char* p;
+ for(p = data; *data; data++, p++)
+ {
+ while(*data == '\r')
+ data++;
+ *p = *data;
+ }
+
+ /* Renull terminate */
+ *p = 0;
+}
+
+char*
+trim_start(const char* data)
+{
+ while(*data && isspace(*data))
+ ++data;
+ return (char*)data;
+}
+
+void
+trim_end(char* data)
+{
+ char* t = data + strlen(data);
+ while(t > data && isspace(*(t - 1)))
+ {
+ t--;
+ *t = 0;
+ }
+}
+
+char*
+trim_space(char* data)
+{
+ data = (char*)trim_start(data);
+ trim_end(data);
+ return data;
+}
+
+/* String to bool helper function */
+int strtob(const char* str)
+{
+ if(strcasecmp(str, "0") == 0 ||
+ strcasecmp(str, "no") == 0 ||
+ strcasecmp(str, "false") == 0 ||
+ strcasecmp(str, "f") == 0 ||
+ strcasecmp(str, "off") == 0)
+ return 0;
+
+ if(strcasecmp(str, "1") == 0 ||
+ strcasecmp(str, "yes") == 0 ||
+ strcasecmp(str, "true") == 0 ||
+ strcasecmp(str, "t") == 0 ||
+ strcasecmp(str, "on") == 0)
+ return 1;
+
+ return -1;
+}
+
+size_t
+strlcpy(char *dst, const char *src, size_t len)
+{
+ size_t ret = strlen(dst);
+
+ while (len > 1) {
+ *dst++ = *src++;
+ len--;
+ }
+ if (len > 0)
+ *dst = '\0';
+ return (ret);
+}
+
+size_t strlcat(char* dst, const char* src, size_t siz)
+{
+ char* d = dst;
+ const char* s = src;
+ size_t n = siz;
+ size_t dlen;
+
+ /* Find the end of dst and adjust bytes left but don't go past end */
+ while(n-- != 0 && *d != '\0')
+ d++;
+ dlen = d - dst;
+ n = siz - dlen;
+
+ if(n == 0)
+ return dlen + strlen(s);
+ while(*s != '\0')
+ {
+ if(n != 1)
+ {
+ *d++ = *s;
+ n--;
+ }
+
+ s++;
+ }
+
+ *d = '\0';
+
+ return dlen + (s - src); /* count does not include NUL */
+}
diff --git a/daemon/common/stringx.h b/daemon/common/stringx.h
new file mode 100644
index 0000000..042cf2d
--- /dev/null
+++ b/daemon/common/stringx.h
@@ -0,0 +1,53 @@
+/*
+ * Copyright (c) 2004, Nate Nielsen
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the
+ * following disclaimer.
+ * * Redistributions in binary form must reproduce the
+ * above copyright notice, this list of conditions and
+ * the following disclaimer in the documentation and/or
+ * other materials provided with the distribution.
+ * * The names of contributors to this software may not be
+ * used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+ * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ *
+ *
+ * CONTRIBUTORS
+ * Nate Nielsen <nielsen@memberwebs.com>
+ *
+ */
+
+#ifndef __STRINGX_H__
+#define __STRINGX_H__
+
+void remove_cr(char* data);
+
+char* trim_start(const char* data);
+void trim_end(char* data);
+char* trim_space(char* data);
+
+int strtob(const char* str);
+
+size_t
+strlcpy(char *dst, const char *src, size_t len);
+
+#endif /* __STRINGX_H__ */
diff --git a/daemon/config.c b/daemon/config.c
new file mode 100644
index 0000000..ca64514
--- /dev/null
+++ b/daemon/config.c
@@ -0,0 +1,575 @@
+/*
+ * Copyright (c) 2005, Nate Nielsen
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the
+ * following disclaimer.
+ * * Redistributions in binary form must reproduce the
+ * above copyright notice, this list of conditions and
+ * the following disclaimer in the documentation and/or
+ * other materials provided with the distribution.
+ * * The names of contributors to this software may not be
+ * used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+ * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ *
+ *
+ * CONTRIBUTORS
+ * Nate Nielsen <nielsen@memberwebs.com>
+ *
+ */
+
+#include "usuals.h"
+#include <errno.h>
+#include <unistd.h>
+#include <syslog.h>
+#include <dirent.h>
+
+#include "stringx.h"
+#include "rrdbotd.h"
+
+/* TODO: Put file names in all the parsing error messages */
+
+/*
+ * These routines parse the configuration files and setup the in memory
+ * data structures. They're mostly run before becoming a daemon, and just
+ * exit on error.
+ */
+
+typedef struct _config_ctx
+{
+ const char* confname;
+ char* configmem;
+ uint interval;
+ uint timeout;
+ rb_item* items;
+}
+config_ctx;
+
+/* -----------------------------------------------------------------------------
+ * STRINGS
+ */
+
+#define CONFIG_POLL "poll"
+#define CONFIG_INTERVAL "interval"
+#define CONFIG_FIELD "field."
+#define CONFIG_SNMP "snmp"
+
+#define FIELD_VALID "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ_-0123456789."
+
+/* -----------------------------------------------------------------------------
+ * CONFIG LOADING
+ */
+
+static rb_item*
+sort_items_by_host(rb_item *item)
+{
+ rb_item *sort = NULL;
+ rb_item *cur;
+ rb_item *it;
+
+ while(item)
+ {
+ cur = item;
+ item = item->next;
+ cur->next = NULL;
+
+ /* First item */
+ if(!sort)
+ {
+ sort = cur;
+ continue;
+ }
+
+ /* Before first item */
+ else if(cur->host <= sort->host)
+ {
+ cur->next = sort;
+ sort = cur;
+ continue;
+ }
+
+ for(it = sort; it->next; it = it->next)
+ {
+ if(cur->host <= sort->next->host)
+ break;
+ }
+
+ ASSERT(it);
+ cur->next = it->next;
+ it->next = cur;
+ }
+
+ return sort;
+}
+
+static void
+config_done(config_ctx* ctx)
+{
+ char key[MAXPATHLEN];
+ rb_item* it;
+ rb_poller* poll;
+ char *t;
+
+ /* No polling specified */
+ if(!ctx->items)
+ return;
+
+ /* Make sure we found an interval */
+ if(ctx->interval == 0)
+ errx(2, "no interval specified in config file: %s", ctx->confname);
+
+ if(ctx->timeout == 0)
+ ctx->timeout = g_state.timeout;
+
+ /* And a nice key for lookups */
+ snprintf(key, sizeof(key), "%d-%d:%s/%s.rrd", ctx->timeout,
+ ctx->interval, g_state.rrddir, ctx->confname);
+ key[sizeof(key) - 1] = 0;
+
+ /* See if we have one of these pollers already */
+ poll = (rb_poller*)hsh_get(g_state.poll_by_key, key, -1);
+ if(!poll)
+ {
+ poll = (rb_poller*)calloc(1, sizeof(*poll));
+
+ if(!poll || !hsh_set(g_state.poll_by_key, key, -1, poll))
+ errx(1, "out of memory");
+
+ strcpy(poll->key, key);
+ t = strchr(poll->key, ':');
+ ASSERT(t);
+ poll->rrdname = t + 1;
+
+ poll->interval = ctx->interval * 1000;
+ poll->timeout = ctx->timeout * 1000;
+
+ /* Add it to the main lists */
+ poll->next = g_state.polls;
+ g_state.polls = poll;
+ }
+
+ /* Get the last item and add to the list */
+ for(it = ctx->items; it->next; it = it->next)
+ it->poller = poll;
+
+ ASSERT(it);
+ it->poller = poll;
+
+ /* Add the items to this poller */
+ it->next = poll->items;
+ poll->items = sort_items_by_host(ctx->items);
+
+ /*
+ * This remains allocated for the life of the program as
+ * All the configuration strings are in this memory.
+ * This allows all the users of these strings not to worry
+ * about reallocating or freeing them
+ */
+ rb_atexit(free, ctx->configmem);
+ ctx->configmem = NULL;
+
+ /* Clear current config and get ready for next */
+ ctx->items = NULL;
+ ctx->interval = 0;
+
+
+}
+
+static void
+parse_uri(char *uri, char** scheme, char** host,
+ char** user, char** path, config_ctx* ctx)
+{
+ /* Copy only for error messages as we mess with original */
+ char* copy = strdup(uri);
+ char* t;
+
+ *host = NULL;
+ *path = NULL;
+ *user = NULL;
+
+ *scheme = strsep(&uri, ":");
+ if(uri == NULL)
+ errx(2, "invalid poll uri (scheme invalid): %s", copy);
+
+ if((uri[0] != '/' && uri[1] != '/'))
+ errx(2, "invalid poll uri (scheme invalid): %s", copy);
+
+ uri += 2;
+ *host = strsep(&uri, "/");
+ if(*host[0])
+ {
+ /* Parse the user name out from the host */
+ t = strchr(*host, '@');
+ if(t)
+ {
+ *t = 0;
+ *user = *host;
+ *host = t + 1;
+ }
+ }
+
+ if(!*host[0])
+ errx(2, "invalid poll uri (no hostname found): %s", copy);
+
+ if(!uri || !uri[0] || !uri[1])
+ errx(2, "invalid poll uri (no pathname found): %s", copy);
+
+ *path = uri;
+
+ /* This copy only for error messages */
+ free(copy);
+}
+
+static rb_item*
+parse_item(const char* field, char* uri, config_ctx *ctx)
+{
+ rb_item *ritem;
+ rb_host *rhost;
+
+ char* host;
+ char* user;
+ char* scheme;
+ char* path;
+
+ /* Parse the SNMP URI */
+ parse_uri(uri, &scheme, &host, &user, &path, ctx);
+ ASSERT(scheme && host && path);
+
+ /* TODO: SNMP version support */
+
+ /* Currently we only support SNMP pollers */
+ if(strcmp(scheme, CONFIG_SNMP) != 0)
+ errx(2, "invalid poll scheme: %s", scheme);
+
+ /* TODO: THis code assumes all hosts have the same community
+ the lookups below won't work wehn host/community is different */
+
+ /* See if we can find an associated host */
+ rhost = (rb_host*)hsh_get(g_state.host_by_name, host, -1);
+ if(!rhost)
+ {
+ /* Make a new one if necessary */
+ rhost = (rb_host*)calloc(1, sizeof(*rhost));
+
+ if(!rhost || !hsh_set(g_state.host_by_name, host, -1, rhost))
+ errx(1, "out of memory");
+
+ /* TODO: Version support */
+ rhost->version = 1;
+ rhost->name = host;
+ rhost->community = user ? user : "public";
+
+ /* TODO: Eventually resolving should be in a separate thread,
+ and done regularly */
+ if(sock_any_pton(host, &(rhost->address),
+ SANY_OPT_DEFPORT(161) | SANY_OPT_DEFLOCAL) == -1)
+ {
+ rb_message(LOG_WARNING, "couldn't resolve host address (ignoring): %s", host);
+ free(rhost);
+ return;
+ }
+
+ /* And add it to the list */
+ rhost->next = g_state.hosts;
+ g_state.hosts = rhost;
+ }
+
+ /* Make a new item */
+ ritem = calloc(1, sizeof(*ritem));
+ if(!ritem)
+ errx(1, "out of memory");
+
+ ritem->rrdfield = field;
+ ritem->host = rhost;
+ ritem->poller = NULL; /* Set later in config_done */
+ ritem->req = NULL;
+ ritem->value = RB_UNKNOWN;
+
+ /* And parse the OID */
+ if(rb_parse_mib(path, &(ritem->snmpfield)) == -1)
+ errx(2, "invalid OID: %s", path + 1);
+
+ /* And add it to the list */
+ ritem->next = ctx->items;
+ ctx->items = ritem;
+}
+
+static void
+config_value(const char* header, const char* name, char* value,
+ config_ctx* ctx)
+{
+ if(strcmp(header, "poll") != 0)
+ return;
+
+ if(strcmp(name, CONFIG_INTERVAL) == 0)
+ {
+ char* t;
+ int i;
+
+ if(ctx->interval > 0)
+ errx(2, CONFIG_INTERVAL " specified twice: %s", value);
+
+ i = strtol(value, &t, 10);
+ if(i < 1)
+ err(2, CONFIG_INTERVAL " must be a positive number: %s", value);
+
+ ctx->interval = (uint32_t)i;
+ }
+
+ /* If it starts with "field." */
+ if(strncmp(name, CONFIG_FIELD, KL(CONFIG_FIELD)) == 0)
+ {
+ rb_poller* poll;
+ const char* field;
+ const char* t;
+
+ /* Check the name */
+ field = name + KL(CONFIG_FIELD);
+ t = field + strspn(field, FIELD_VALID);
+ if(*t)
+ err(2, "the '%s' field name must only contain characters, digits, underscore and dash", field);
+
+ /* Parse out the field */
+ parse_item(field, value, ctx);
+ }
+}
+
+/* -----------------------------------------------------------------------------
+ * CONFIG FILES
+ */
+
+static char*
+read_config_file(const char* configfile)
+{
+ char* config = NULL;
+ FILE* f = NULL;
+ long len;
+
+ ASSERT(configfile);
+
+ f = fopen(configfile, "r");
+ if(f == NULL)
+ err(1, "couldn't open config file: %s", configfile);
+
+ /* Figure out size */
+ if(fseek(f, 0, SEEK_END) == -1 || (len = ftell(f)) == -1 || fseek(f, 0, SEEK_SET) == -1)
+ err(1, "couldn't seek config file: %s", configfile);
+
+ if((config = (char*)malloc(len + 2)) == NULL)
+ errx(1, "out of memory");
+
+ /* And read in one block */
+ if(fread(config, 1, len, f) != len)
+ err(1, "couldn't read config file: %s", configfile);
+
+ fclose(f);
+
+ /* Null terminate the data */
+ config[len] = '\n';
+ config[len + 1] = 0;
+
+ /* Remove nasty dos line endings */
+ remove_cr(config);
+
+ rb_messagex(LOG_DEBUG, "read config file: %s", configfile);
+ return config;
+}
+
+static void
+parse_config_file(const char* configfile, config_ctx *ctx)
+{
+ char* name = NULL;
+ char* value = NULL;
+ char* config;
+ char* next;
+ char* header;
+ char* p;
+ char* t;
+ int pos;
+
+ config = read_config_file(configfile);
+ ctx->configmem = config;
+ next = config;
+
+ /* Go through lines and process them */
+ while((t = strchr(next, '\n')) != NULL)
+ {
+ *t = 0;
+ p = next; /* Do this before cleaning below */
+ next = t + 1;
+
+ t = trim_start(p);
+
+ /* Continuation line (had spaces at start) */
+ if(p < t && *t)
+ {
+ if(!value)
+ errx(2, "invalid continuation in config: %s", p);
+
+ /* Calculate the end of the current value */
+ t = value + strlen(value);
+ ASSERT(t < p);
+
+ /* Continuations are separated by spaces */
+ *t = ' ';
+ t++;
+
+ continue;
+ }
+
+ // No continuation hand off value if necessary
+ if(name && value)
+ {
+ rb_messagex(LOG_DEBUG, "parsed configuration value: [%s] %s = %s", header, name, value);
+ config_value(header, name, value, ctx);
+ }
+
+ name = NULL;
+ value = NULL;
+
+ /* Empty lines / comments at start / comments without continuation */
+ if(!*t || *p == '#')
+ continue;
+
+ /* A header */
+ if(*p == '[')
+ {
+ t = p + strcspn(p, "]");
+ if(!*t || t == p + 1)
+ errx(2, "invalid config header: %s", p);
+
+ *t = 0;
+ header = trim_space(p + 1);
+ continue;
+ }
+
+ /* Look for the break between name = value on the same line */
+ t = p + strcspn(p, ":=");
+ if(!*t)
+ errx(2, "invalid config line: %s", p);
+
+ /* Null terminate and split value part */
+ *t = 0;
+ t++;
+
+ name = trim_space(p);
+ value = trim_space(t);
+ }
+
+ if(name && value)
+ {
+ rb_messagex(LOG_DEBUG, "parsed configuration value: [%s] %s = %s", header, name, value);
+ config_value(header, name, value, ctx);
+ }
+
+ config_done(ctx);
+
+ /* If nobody claimed this memory then we don't need to keep it around */
+ if(ctx->configmem)
+ free(ctx->configmem);
+ ctx->configmem = NULL;
+}
+
+void
+rb_config_parse()
+{
+ char configfile[MAXPATHLEN];
+ struct dirent* dire;
+ config_ctx ctx;
+ DIR* dir;
+
+ /* Setup the hash tables properly */
+ g_state.poll_by_key = hsh_create();
+ g_state.host_by_name = hsh_create();
+
+ dir = opendir(g_state.confdir);
+ if(!dir)
+ err("couldn't read config directory: %s", g_state.confdir);
+
+ while((dire = readdir(dir)) != NULL)
+ {
+ if(dire->d_type != DT_REG && dire->d_type != DT_LNK)
+ continue;
+
+ /* Build a happy path name */
+ snprintf(configfile, MAXPATHLEN, "%s/%s", g_state.confdir, dire->d_name);
+ configfile[MAXPATHLEN - 1] = 0;
+
+ memset(&ctx, 0, sizeof(ctx));
+ ctx.confname = dire->d_name;
+
+ parse_config_file(configfile, &ctx);
+ }
+
+ closedir(dir);
+}
+
+/* -----------------------------------------------------------------------------
+ * FREEING MEMORY
+ */
+
+static void
+free_items(rb_item* item)
+{
+ rb_item* next;
+ for(; item; item = next)
+ {
+ next = item->next;
+ free(item);
+ }
+}
+
+static void
+free_hosts(rb_host* host)
+{
+ rb_host* next;
+ for(; host; host = next)
+ {
+ next = host->next;
+ free(host);
+ }
+}
+
+static void
+free_pollers(rb_poller* poll)
+{
+ rb_poller* next;
+ for(; poll; poll = next)
+ {
+ free_items(poll->items);
+
+ next = poll->next;
+ free(poll);
+ }
+
+}
+
+void
+rb_config_free()
+{
+ hsh_free(g_state.poll_by_key);
+ hsh_free(g_state.host_by_name);
+
+ free_hosts(g_state.hosts);
+
+ /* Note that rb_item's are owned by pollers */
+ free_pollers(g_state.polls);
+}
diff --git a/daemon/rrd-update.c b/daemon/rrd-update.c
new file mode 100644
index 0000000..b4be997
--- /dev/null
+++ b/daemon/rrd-update.c
@@ -0,0 +1,134 @@
+/*
+ * Copyright (c) 2005, Nate Nielsen
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the
+ * following disclaimer.
+ * * Redistributions in binary form must reproduce the
+ * above copyright notice, this list of conditions and
+ * the following disclaimer in the documentation and/or
+ * other materials provided with the distribution.
+ * * The names of contributors to this software may not be
+ * used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+ * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ *
+ *
+ * CONTRIBUTORS
+ * Nate Nielsen <nielsen@memberwebs.com>
+ *
+ */
+
+#define _GNU_SOURCE
+
+#include "usuals.h"
+#include <errno.h>
+#include <syslog.h>
+#include <unistd.h>
+
+#include "stringx.h"
+#include "rrdbotd.h"
+
+#define MAX_NUMLEN 40
+
+void rb_rrd_update(rb_poller *poll)
+{
+ char buf[MAX_NUMLEN];
+ const char* argv[5];
+ char* template;
+ char* items;
+ int r, tlen, ilen;
+ rb_item *it;
+
+ if(!poll->items)
+ return;
+
+ tlen = 0;
+ ilen = 3;
+
+ for(it = poll->items; it; it = it->next)
+ {
+ tlen += strlen(it->rrdfield) + 1;
+ ilen += 40;
+ }
+
+ template = (char*)calloc(tlen, sizeof(char));
+ items = (char*)calloc(ilen, sizeof(char));
+
+ if(!template || !items)
+ {
+ if(items)
+ free(items);
+ if(template)
+ free(template);
+ rb_messagex(LOG_CRIT, "out of memory");
+ return;
+ }
+
+ /* Put in the right time */
+ snprintf(items, ilen, "%lld:", (poll->last_polled / 1000L));
+
+ /* Build the rest of the arguments */
+ for(it = poll->items; it; it = it->next)
+ {
+ if(it != poll->items)
+ {
+ strlcat(template, ":", tlen);
+ strlcat(items, ":", ilen);
+ }
+
+ strlcat(template, it->rrdfield, tlen);
+
+ if(it->value == RB_UNKNOWN)
+ strlcat(items, "U", ilen);
+ else
+ {
+ snprintf(buf, MAX_NUMLEN, "%.4lf", it->value);
+ buf[MAX_NUMLEN - 1] = 0;
+ strlcat(items, buf, ilen);
+ }
+ }
+
+ /* Always have to clear before calling rrdtool. klunky :( */
+ optind = 0;
+ opterr = 0;
+
+ /* TODO: We need support for @ to specify when these values occurred */
+
+ argv[0] = "rrdupdate";
+ argv[1] = poll->rrdname;
+ argv[2] = "-t";
+ argv[3] = template;
+ argv[4] = items;
+
+ rb_messagex(LOG_DEBUG, "updating RRD file: %s", poll->rrdname);
+ rb_messagex(LOG_DEBUG, "> template: %s", template);
+ rb_messagex(LOG_DEBUG, "> values: %s", items);
+
+ rrd_clear_error();
+ r = rrd_update(5, argv);
+
+ if(r != 0)
+ rb_messagex(LOG_ERR, "couldn't update rrd file: %s: %s",
+ poll->rrdname, rrd_get_error());
+
+ free(template);
+ free(items);
+}
diff --git a/daemon/rrdbotd.c b/daemon/rrdbotd.c
new file mode 100644
index 0000000..95ab092
--- /dev/null
+++ b/daemon/rrdbotd.c
@@ -0,0 +1,239 @@
+/*
+ * Copyright (c) 2005, Nate Nielsen
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the
+ * following disclaimer.
+ * * Redistributions in binary form must reproduce the
+ * above copyright notice, this list of conditions and
+ * the following disclaimer in the documentation and/or
+ * other materials provided with the distribution.
+ * * The names of contributors to this software may not be
+ * used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+ * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ *
+ *
+ * CONTRIBUTORS
+ * Nate Nielsen <nielsen@memberwebs.com>
+ *
+ */
+
+#include "usuals.h"
+#include <errno.h>
+#include <unistd.h>
+#include <stdarg.h>
+#include <syslog.h>
+
+/* TODO: Abstract these headers away nicely */
+#include <bsnmp/asn1.h>
+#include <bsnmp/snmp.h>
+
+#include "stringx.h"
+#include "rrdbotd.h"
+
+/* TODO: Temporary */
+#include "snmpclient.h"
+
+/* -----------------------------------------------------------------------------
+ * GLOBALS
+ */
+
+/* The one main state object */
+rb_state g_state;
+
+/* TODO: These should be set from the command line */
+static int daemonized = 0;
+static int debug_level = 7;
+
+/* -----------------------------------------------------------------------------
+ * CLEANUP
+ */
+
+typedef struct _exit_stack
+{
+ voidfunc func;
+ void* data;
+
+ /* We have a list of these beauties */
+ struct _exit_stack* next;
+}
+exit_stack;
+
+/* Our exit stack */
+static exit_stack* atexits = NULL;
+static int atexit_registered = 0;
+
+static void
+atexit_do_stack(void)
+{
+ exit_stack* next;
+ for(; atexits; atexits = next)
+ {
+ next = atexits->next;
+ (atexits->func)(atexits->data);
+ free(atexits);
+ }
+}
+
+void
+rb_atexit(voidfunc func, void* data)
+{
+ exit_stack* ae;
+
+ ASSERT(func);
+
+ ae = (exit_stack*)calloc(1, sizeof(exit_stack));
+ if(ae)
+ {
+ ae->func = func;
+ ae->data = data;
+ ae->next = atexits;
+ atexits = ae;
+
+ if(!atexit_registered)
+ atexit(atexit_do_stack);
+ }
+}
+
+/* -----------------------------------------------------------------------------
+ * LOGGING
+ */
+
+static void
+vmessage (int level, int err, const char* msg, va_list ap)
+{
+ #define MAX_MSGLEN 1024
+ char buf[MAX_MSGLEN];
+ int e = errno;
+
+ if(daemonized) {
+ if (level >= LOG_DEBUG)
+ return;
+ } else {
+ if(debug_level < level)
+ return;
+ }
+
+ ASSERT (msg);
+ snprintf(buf, MAX_MSGLEN, "%s%s", msg, err ? ": " : "");
+
+ if(err)
+ strncat(buf, strerror(e), MAX_MSGLEN);
+
+ /* As a precaution */
+ buf[MAX_MSGLEN - 1] = 0;
+
+ /* Either to syslog or stderr */
+ if (daemonized)
+ vsyslog (level, buf, ap);
+ else
+ vwarnx (buf, ap);
+}
+
+void
+rb_messagex (int level, const char* msg, ...)
+{
+ va_list ap;
+ va_start(ap, msg);
+ vmessage(level, 0, msg, ap);
+ va_end(ap);
+}
+
+void
+rb_message (int level, const char* msg, ...)
+{
+ va_list ap;
+ va_start(ap, msg);
+ vmessage(level, 1, msg, ap);
+ va_end(ap);
+}
+
+/* -----------------------------------------------------------------------------
+ * STARTUP
+ */
+
+static void
+usage()
+{
+ fprintf(stderr, "usage: rrdcollectd\n");
+ fprintf(stderr, " rrdcollectd -v\n");
+ exit(2);
+}
+
+#include <values.h>
+
+int
+main(int argc, char* argv[])
+{
+ int daemonize;
+ char ch;
+
+ /* Initialize the state stuff */
+ memset(&g_state, 0, sizeof(g_state));
+
+ /* TODO: These should come from configure, and from arguments */
+ g_state.rrddir = "/data/projects/rrdui/work";
+ g_state.confdir = "/data/projects/rrdui/conf";
+ g_state.retries = 3;
+ g_state.timeout = 5;
+
+ /* Parse the arguments nicely */
+ while((ch = getopt(argc, argv, "v")) != -1)
+ {
+ switch(ch)
+ {
+
+ /* Print version number */
+ case 'v':
+ printf("rrdcollectd (version %s)\n", VERSION);
+ exit(0);
+ break;
+
+ /* Usage information */
+ case '?':
+ default:
+ usage();
+ break;
+ }
+ }
+
+ argc -= optind;
+ argv += optind;
+
+ /* The mainloop server */
+ server_init();
+
+ /* Parse config and setup SNMP system */
+ rb_config_parse();
+ rb_snmp_engine_init();
+
+ /* Now let it go */
+ if(server_run() == -1)
+ err(1, "critical failure running SNMP engine");
+
+ /* Cleanups */
+ rb_snmp_engine_uninit();
+ rb_config_free();
+ server_uninit();
+
+ return 0;
+}
+
diff --git a/daemon/rrdbotd.h b/daemon/rrdbotd.h
new file mode 100644
index 0000000..74f8fd5
--- /dev/null
+++ b/daemon/rrdbotd.h
@@ -0,0 +1,182 @@
+/*
+ * Copyright (c) 2004, Nate Nielsen
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the
+ * following disclaimer.
+ * * Redistributions in binary form must reproduce the
+ * above copyright notice, this list of conditions and
+ * the following disclaimer in the documentation and/or
+ * other materials provided with the distribution.
+ * * The names of contributors to this software may not be
+ * used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+ * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ *
+ *
+ * CONTRIBUTORS
+ * Nate Nielsen <nielsen@memberwebs.com>
+ *
+ */
+
+#ifndef __RRDBOTD_H__
+#define __RRDBOTD_H__
+
+#include <values.h>
+#include <stdint.h>
+
+#include "asn1.h"
+#include "snmp.h"
+#include "sock-any.h"
+#include "hash.h"
+
+/* -----------------------------------------------------------------------------
+ * DATA
+ */
+
+typedef uint64_t mstime;
+#define RB_UNKNOWN -DBL_MAX
+
+struct _rb_item;
+struct _rb_poller;
+struct _rb_host;
+struct _rb_request;
+
+/*
+ * Note that all the members are either in the config memory
+ * or inline. This helps us keep memory management simple.
+ */
+
+typedef struct _rb_item
+{
+ struct _rb_request* req;
+
+ /* Specific to this item */
+ const char* rrdfield;
+ struct snmp_value snmpfield;
+
+ /* The last value / current request */
+ double value;
+
+ /* Pointers to related */
+ const struct _rb_poller* poller;
+ const struct _rb_host* host;
+
+ /* Next in list of items */
+ struct _rb_item* next;
+}
+rb_item;
+
+typedef struct _rb_host
+{
+ const char* name;
+ const char* community;
+ int version;
+
+ /* Host resolving and book keeping */
+ struct sockaddr_any address;
+ mstime interval;
+ mstime last_resolved;
+
+ /* Next in list of hosts */
+ struct _rb_host* next;
+}
+rb_host;
+
+typedef struct _rb_poller
+{
+ /* The hash key is interval-timeout:rrdname */
+ char key[MAXPATHLEN];
+
+ /* This points into the memory above */
+ const char* rrdname;
+
+ mstime interval;
+ mstime timeout;
+
+ /* The things to poll. rb_poller owns this list */
+ rb_item* items;
+
+ /* Book keeping */
+ mstime last_polled;
+
+ /* Next in list of pollers */
+ struct _rb_poller* next;
+}
+rb_poller;
+
+typedef struct _rb_state
+{
+ /* Settings from command line */
+ const char* confdir;
+ const char* rrddir;
+ uint retries;
+ uint timeout;
+
+ /* All the pollers/hosts */
+ rb_poller* polls;
+ rb_host* hosts;
+
+ /* Quick lookups for responses */
+ hsh_t* poll_by_key;
+ hsh_t* host_by_name;
+}
+rb_state;
+
+/* One global rb_state with all the main settings */
+extern rb_state g_state;
+
+/* -----------------------------------------------------------------------------
+ * UTILITIES (rrdbotd.c)
+ */
+
+void rb_messagex (int level, const char* msg, ...);
+void rb_message (int level, const char* msg, ...);
+
+typedef void (*voidfunc)(void*);
+void rb_atexit (voidfunc func, void* data);
+
+/* -----------------------------------------------------------------------------
+ * CONFIG (config.c)
+ */
+
+void rb_config_parse();
+void rb_config_free();
+
+/* -----------------------------------------------------------------------------
+ * SNMP HELPERS (snmp-help.c)
+ */
+
+int rb_snmp_parse_mib(const char* oid, struct snmp_value* value);
+
+/* -----------------------------------------------------------------------------
+ * SNMP ENGINE (snmp-engine.c)
+ */
+
+void rb_snmp_engine_init();
+void rb_snmp_engine_uninit();
+
+/* -----------------------------------------------------------------------------
+ * RRD UPDATE CODE (rrd-update.c)
+ */
+
+void rb_rrd_update(rb_poller *poll);
+
+#endif /* __RRDBOTD_H__ */
diff --git a/daemon/snmp-engine.c b/daemon/snmp-engine.c
new file mode 100644
index 0000000..e1bff30
--- /dev/null
+++ b/daemon/snmp-engine.c
@@ -0,0 +1,636 @@
+/*
+ * Copyright (c) 2005, Nate Nielsen
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the
+ * following disclaimer.
+ * * Redistributions in binary form must reproduce the
+ * above copyright notice, this list of conditions and
+ * the following disclaimer in the documentation and/or
+ * other materials provided with the distribution.
+ * * The names of contributors to this software may not be
+ * used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+ * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ *
+ *
+ * CONTRIBUTORS
+ * Nate Nielsen <nielsen@memberwebs.com>
+ *
+ */
+
+#include "usuals.h"
+#include <errno.h>
+#include <syslog.h>
+
+#include <bsnmp/asn1.h>
+#include <bsnmp/snmp.h>
+
+#include "stringx.h"
+#include "rrdbotd.h"
+#include "server-mainloop.h"
+
+/* The socket to use */
+int snmp_socket = -1;
+
+/* The last request: start at a strange number */
+uint32_t snmp_request = 0x0A0A0A0A;
+
+/* Since we only deal with one packet at a time, global buffer */
+unsigned char snmp_buffer[0x1000];
+
+/* -----------------------------------------------------------------------------
+ * REQUESTS
+ */
+
+/* rb_request waaaaayyyyy too big */
+typedef struct _rb_request
+{
+ /* The SNMP request identifier */
+ uint32_t id;
+
+ mstime next_retry; /* Time of the next retry */
+ mstime interval; /* How long between retries */
+ mstime timeout; /* When this request times out */
+ uint sent; /* How many times we've sent */
+
+ /* The poller and host associated with this request */
+ rb_poller* poll;
+ const rb_host* host;
+
+ /* The actual request data */
+ struct snmp_pdu pdu;
+}
+rb_request;
+
+/* a scrolling window on a loop */
+static rb_request* requests = NULL;
+static int reqhigh = -1;
+static int reqlow = -1;
+static uint nrequests = 0;
+
+static rb_request*
+new_req()
+{
+ rb_request* req = NULL;
+ uint num;
+ int i, first, overlap = 0;
+
+ if(nrequests)
+ {
+ /* We allocate in a loop starting after the last allocation. */
+ for(i = (reqhigh + 1) % nrequests; i != reqhigh;
+ i = (i + 1) % nrequests)
+ {
+ /*
+ * We can overlap past reqlow, but in that case no
+ * updating reqhigh. This can happen after reallocating.
+ */
+ if(i == reqlow)
+ overlap = 1;
+
+ if(requests[i].id == 0)
+ {
+ req = &(requests[i]);
+
+ if(!overlap)
+ reqhigh = i;
+ break;
+ }
+ }
+ }
+
+ if(!req)
+ {
+ /*
+ * A note about the scrolling window and extending allocations...
+ * The only reason this works is because whenever we reallocate
+ * reqhigh and reqlow are the same.
+ */
+ ASSERT(reqlow == reqhigh);
+
+ /* Reallocate the request block */
+ /* TODO: Once we use less memory this can be higher */
+ num = nrequests ? nrequests * 2 : 32;
+ requests = (rb_request*)realloc(requests, sizeof(rb_request) * num);
+ if(!requests)
+ {
+ /* Note we leave old requests allocated */
+ errno = ENOMEM;
+ return NULL;
+ }
+
+ /* Clear out the new ones */
+ memset(requests + nrequests, 0, sizeof(rb_request) * (num - nrequests));
+
+ /* We return the next one */
+ req = requests + nrequests;
+
+ nrequests = num;
+
+ if(reqhigh == -1)
+ reqhigh = 0;
+ if(reqlow == -1)
+ reqlow = nrequests - 1;
+ }
+
+ /* A incrementing counter for each request */
+ req->id = snmp_request++;
+ return req;
+}
+
+static rb_request*
+find_req(uint32_t id)
+{
+ int i, first;
+
+ if(!nrequests)
+ return NULL;
+
+ /*
+ * Search backwards from the in the scrolling window. This gives
+ * us as high performance for the high performing pollers and
+ * less performance for the low ones.
+ */
+ for(i = reqhigh, first = 1; first || i != reqlow;
+ i = (i ? i : nrequests) - 1)
+ {
+ if(id == requests[i].id)
+ return &(requests[i]);
+ first = 0;
+ }
+
+ return NULL;
+}
+
+static void
+free_req(rb_request* req)
+{
+ int i;
+
+ memset(req, 0, sizeof(*req));
+
+ /* Update the bottom of the scrolling loop */
+ for(i = reqlow; i != reqhigh; i = (i + 1) % nrequests)
+ {
+ /* If used then done */
+ if(requests[i].id)
+ break;
+
+ /* reqlow is not inclusive */
+ reqlow = i;
+ }
+}
+
+/* -----------------------------------------------------------------------------
+ * PACKET HANDLING
+ */
+
+static void
+finish_poll(rb_poller* poll, mstime when)
+{
+#ifdef _DEBUG
+ {
+ rb_item* it;
+ for(it = poll->items; it; it = it->next)
+ ASSERT(!it->req);
+ }
+#endif
+
+ /* Update the book-keeping */
+ poll->last_polled = when;
+
+ rb_messagex(LOG_DEBUG, "collected poll values. sending them to rrd");
+
+ /* And send off our collection of values */
+ rb_rrd_update(poll);
+}
+
+static void
+send_req(rb_request* req, mstime when)
+{
+ struct asn_buf b;
+ ssize_t ret;
+
+ b.asn_ptr = snmp_buffer;
+ b.asn_len = sizeof(snmp_buffer);
+
+ if(snmp_pdu_encode(&(req->pdu), &b))
+ rb_message(LOG_CRIT, "couldn't encode snmp buffer");
+ else
+ {
+ ret = sendto(snmp_socket, snmp_buffer, b.asn_ptr - snmp_buffer, 0,
+ &SANY_ADDR(req->host->address), SANY_LEN(req->host->address));
+ if(ret == -1)
+ rb_message(LOG_ERR, "couldn't send snmp packet to: %s", req->host->name);
+ else
+ rb_messagex(LOG_DEBUG, "sent request '%d' to: %s", req->id, req->host->name);
+ }
+
+ /* And update our bookkeeping */
+ req->sent++;
+ if(req->sent <= g_state.retries)
+ req->next_retry = when + req->interval;
+}
+
+static void
+timeout_req(rb_request* req, mstime when)
+{
+ rb_poller* poll = req->poll;
+ int incomplete = 0;
+ rb_item* it;
+
+ ASSERT(poll);
+
+ /*
+ * Marks of this requests items as unknown. Request is
+ * over, free. See if poller is done
+ */
+
+ for(it = poll->items; it; it = it->next)
+ {
+ if(it->req == req)
+ {
+ rb_messagex(LOG_DEBUG, "value for field '%s' timed out", it->rrdfield);
+
+ it->value = RB_UNKNOWN;
+ it->req = NULL;
+ }
+
+ else if(it->req)
+ incomplete = 1;
+ }
+
+ free_req(req);
+
+ if(!incomplete)
+ finish_poll(poll, when);
+}
+
+static void
+check_req(rb_request* req, mstime when)
+{
+ ASSERT(req->id);
+
+ /* See if it's timed out */
+ if(when >= req->timeout)
+ timeout_req(req, when);
+
+ if(!req->next_retry)
+ return;
+
+ /* Resend if necessary */
+ if(when >= req->next_retry)
+ send_req(req, when);
+}
+
+static void
+respond_req(rb_request* req, struct snmp_pdu* pdu, mstime when)
+{
+ struct snmp_value* value;
+ rb_poller* poll = req->poll;
+ rb_item* item;
+ int incomplete = 0;
+ int i;
+
+ ASSERT(req->id == pdu->request_id);
+
+ for(i = 0; i < pdu->nbindings; i++)
+ {
+ value = &(pdu->bindings[i]);
+
+ for(item = poll->items; item; item = item->next)
+ {
+ if(asn_compare_oid(&(value->var), &(item->snmpfield.var)) == 0)
+ {
+ const char *msg = NULL;
+ switch(value->syntax)
+ {
+ case SNMP_SYNTAX_NULL:
+ item->value = RB_UNKNOWN;
+ break;
+ case SNMP_SYNTAX_INTEGER:
+ item->value = value->v.integer;
+ break;
+ case SNMP_SYNTAX_COUNTER:
+ case SNMP_SYNTAX_GAUGE:
+ case SNMP_SYNTAX_TIMETICKS:
+ item->value = value->v.uint32;
+ break;
+ case SNMP_SYNTAX_COUNTER64:
+ item->value = value->v.counter64;
+ break;
+ case SNMP_SYNTAX_OCTETSTRING:
+ case SNMP_SYNTAX_OID:
+ case SNMP_SYNTAX_IPADDRESS:
+ msg = "snmp server returned non numeric value for field: %s";
+ break;
+ case SNMP_SYNTAX_NOSUCHOBJECT:
+ case SNMP_SYNTAX_NOSUCHINSTANCE:
+ case SNMP_SYNTAX_ENDOFMIBVIEW:
+ msg = "value not available on snmp server for field: %s";
+ break;
+ default:
+ msg = "snmp server returned invalid or unsupported value for field: %s";
+ break;
+ }
+
+ if(msg)
+ rb_messagex(LOG_WARNING, msg, item->rrdfield);
+ else
+ rb_messagex(LOG_DEBUG, "got value for field '%s': %0.2f",
+ item->rrdfield, item->value);
+
+ /* Mark this value as done */
+ item->req = NULL;
+ break;
+ }
+ }
+ }
+
+ /* We're done with this request */
+ free_req(req);
+
+ /* Now see if the entire request is done */
+ for(item = poll->items; item; item = item->next)
+ {
+ if(item->req)
+ return;
+ }
+
+
+ /* And if so then hand off */
+ finish_poll(poll, when);
+}
+
+static int
+poller_timer(mstime when, void* arg)
+{
+ rb_poller* poll = (rb_poller*)arg;
+ const rb_host* last_host = NULL;
+ rb_request* req = NULL;
+ rb_item* it;
+
+ /*
+ * If the previous poll has not completed, then we count it
+ * as a timeout.
+ */
+ for(it = poll->items; it; it = it->next)
+ {
+ if(it->req)
+ {
+ ASSERT(it->req->poll == poll);
+ timeout_req(it->req, when);
+ }
+
+ /* timeout_req above should have cleared this */
+ ASSERT(!it->req);
+ }
+
+
+ for(it = poll->items; it; it = it->next)
+ {
+ /*
+ * We assume that the polled items are sorted by host. Done
+ * in config.c. This allows us to fire off the least amount
+ * of requests. Generate new requests when:
+ *
+ * - first or new host
+ * - too many items in the same request
+ */
+ if(!req || it->host != last_host ||
+ req->pdu.nbindings >= SNMP_MAX_BINDINGS)
+ {
+ /* Send off last request ... */
+ if(req)
+ send_req(req, when);
+
+ /* ... and make a new one */
+ req = new_req();
+ if(!req)
+ {
+ rb_message(LOG_CRIT, "couldn't allocate a new snmp request");
+ return 1;
+ }
+
+ req->poll = poll;
+ req->host = it->host;
+
+ rb_messagex(LOG_DEBUG, "preparing request '%d' for: %s@%s",
+ req->id, req->host->community, req->host->name);
+
+ /* Setup the packet */
+ strlcpy(req->pdu.community, req->host->community, sizeof(req->pdu.community));
+ req->pdu.request_id = req->id;
+ req->pdu.version = req->host->version;
+ req->pdu.type = SNMP_PDU_GET;
+ req->pdu.error_status = 0;
+ req->pdu.error_index = 0;
+ req->pdu.nbindings = 0;
+
+ /* Send interval is 200 ms when poll interval is below 2 seconds */
+ req->interval = (poll->interval <= 2000) ? 200L : 600L;
+
+ /* Timeout is for the last packet sent, not first */
+ req->timeout = when + (req->interval * ((mstime)g_state.retries)) + poll->timeout;
+ req->sent = 0;
+
+ last_host = it->host;
+ }
+
+ /* Add an item to this request */
+ req->pdu.bindings[req->pdu.nbindings].var = it->snmpfield.var;
+ req->pdu.bindings[req->pdu.nbindings].syntax = it->snmpfield.syntax;
+ req->pdu.nbindings++;
+
+ /* Mark item as active by this request */
+ it->req = req;
+ it->value = RB_UNKNOWN;
+ }
+
+ if(req)
+ send_req(req, when);
+
+ return 1;
+}
+
+
+static void
+receive_resp(int fd, int type, void* arg)
+{
+ char hostname[MAXPATHLEN];
+ struct sockaddr_any from;
+ struct snmp_pdu pdu;
+ struct asn_buf b;
+ rb_request* req;
+ int len, ret;
+ int32_t ip;
+
+ ASSERT(snmp_socket == fd);
+
+ /* Read in the packet */
+
+ SANY_LEN(from) = sizeof(from);
+ len = recvfrom(snmp_socket, snmp_buffer, sizeof(snmp_buffer), 0,
+ &SANY_ADDR(from), &SANY_LEN(from));
+ if(len < 0)
+ {
+ if(errno != EAGAIN && errno != EWOULDBLOCK)
+ rb_message(LOG_ERR, "error receiving snmp packet from network");
+ return;
+ }
+
+
+ if(sock_any_ntop(&from, hostname, MAXPATHLEN, 0) == -1)
+ strcpy(hostname, "[UNKNOWN]");
+
+ rb_messagex(LOG_DEBUG, "received packet from: %s", hostname);
+
+ /* Now parse the packet */
+
+ b.asn_ptr = snmp_buffer;
+ b.asn_len = len;
+
+ ret = snmp_pdu_decode(&b, &pdu, &ip);
+ if(ret != SNMP_CODE_OK)
+ {
+ rb_message(LOG_WARNING, "invalid snmp packet received from: %s", hostname);
+ return;
+ }
+
+ /* Lookup and check the request properly */
+
+ req = find_req(pdu.request_id);
+ if(!req)
+ return;
+
+ if(pdu.error_status != SNMP_ERR_NOERROR)
+ {
+ /* TODO: Textual errors */
+ rb_message(LOG_ERR, "snmp error '%d' from host: %s", pdu.error_status, hostname);
+ return;
+ }
+
+ if(pdu.version != req->pdu.version)
+ rb_message(LOG_WARNING, "wrong version snmp packet from: %s", hostname);
+
+ rb_messagex(LOG_DEBUG, "response to request '%d' from: %s", req->id, hostname);
+ respond_req(req, &pdu, server_get_time());
+}
+
+static int
+resend_timer(mstime when, void* arg)
+{
+ int i;
+
+ /* Search forwards through the scrolling window */
+ for(i = (reqlow + 1) % nrequests; i <= reqhigh;
+ i = (i + 1) % nrequests)
+ {
+ if(requests[i].id)
+ check_req(&(requests[i]), when);
+ }
+
+ return 1;
+}
+
+static int
+prep_timer(mstime when, void* arg)
+{
+ /*
+ * We don't prepare all timers at exactly the same time
+ * but we sort of randomly start the various timers. We're
+ * going to be hitting these over and over again, so there's
+ * lots of benefits to spreading them out randomly over a
+ * few seconds.
+ */
+
+ rb_poller* poll;
+ int next;
+
+ /* All done? */
+ if(!arg)
+ return 0;
+
+ poll = (rb_poller*)arg;
+ if(server_timer(poll->interval, poller_timer, poll) == -1)
+ rb_message(LOG_CRIT, "couldn't setup poller timer");
+
+ /* Setup the next poller anywhere between 0 and 750 ms */
+ next = rand() % 750;
+ server_oneshot(next, prep_timer, poll->next);
+ return 0;
+}
+
+
+void
+rb_snmp_engine_init()
+{
+ struct sockaddr_in addr;
+ rb_request* req;
+
+ ASSERT(snmp_socket == -1);
+ snmp_socket = socket(PF_INET, SOCK_DGRAM, 0);
+ if(snmp_socket < 0)
+ err(1, "couldn't open snmp socket");
+
+ /* Get a random IPv4 UDP socket for client use */
+ memset(&addr, 0, sizeof(addr));
+ addr.sin_family = AF_INET;
+
+ if(bind(snmp_socket, (struct sockaddr*)&addr, sizeof(addr)) < 0)
+ err(1, "couldn't listen on port");
+
+ if (server_watch(snmp_socket, SERVER_READ, receive_resp, NULL) == -1)
+ err(1, "couldn't listen on socket");
+
+ /* Allocate some requests to make sure we have memory */
+ req = new_req();
+ if(!req)
+ err(1, "out of memory");
+ free_req(req);
+
+ /* Start the preparation timers for setting up randomly */
+ if(server_oneshot(100, prep_timer, g_state.polls) == -1)
+ err(1, "couldn't setup timer");
+
+ /* We fire off the resend timer every 1/5 second */
+ if(server_timer(200, resend_timer, NULL) == -1)
+ err(1, "couldn't setup timer");
+}
+
+void
+rb_snmp_engine_uninit()
+{
+ if(snmp_socket != -1)
+ {
+ server_unwatch(snmp_socket);
+ close(snmp_socket);
+ snmp_socket = -1;
+ }
+
+ if(requests)
+ {
+ free(requests);
+ nrequests = 0;
+ reqhigh = 0;
+ reqlow = 0;
+ }
+}
diff --git a/daemon/snmp-help.c b/daemon/snmp-help.c
new file mode 100644
index 0000000..cf13d40
--- /dev/null
+++ b/daemon/snmp-help.c
@@ -0,0 +1,111 @@
+/*
+ * Copyright (c) 2005, Nate Nielsen
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the
+ * following disclaimer.
+ * * Redistributions in binary form must reproduce the
+ * above copyright notice, this list of conditions and
+ * the following disclaimer in the documentation and/or
+ * other materials provided with the distribution.
+ * * The names of contributors to this software may not be
+ * used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+ * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ *
+ *
+ * CONTRIBUTORS
+ * Nate Nielsen <nielsen@memberwebs.com>
+ *
+ */
+
+#include "usuals.h"
+#include <errno.h>
+#include <syslog.h>
+
+#include <bsnmp/asn1.h>
+#include <bsnmp/snmp.h>
+
+#include "stringx.h"
+#include "rrdbotd.h"
+
+static int
+parse_numeric_mib(const char* mib, struct asn_oid* oid)
+{
+ int ret = 0;
+ unsigned int sub;
+ char* next;
+ char* t;
+ char* copy;
+ char* src;
+
+ memset(oid, 0, sizeof(*oid));
+
+ copy = src = strdup(mib);
+ if(!src)
+ return -1;
+
+ while(src && *src)
+ {
+ next = strchr(src, '.');
+ if(next)
+ *next = 0;
+
+ sub = strtoul(src, &t, 10);
+
+ /* Too many parts */
+ if(oid->len > ASN_MAXOIDLEN)
+ ret = -1;
+
+ /* An invalid number */
+ if(*t)
+ ret = -1;
+
+ /* Make sure this is a valid part */
+ if((oid->len == 0 && sub < 1) || sub < 0 || sub >= ASN_MAXID)
+ ret -1;
+
+ if(ret < 0)
+ break;
+
+ oid->subs[oid->len] = sub;
+ oid->len++;
+
+ src = next ? next + 1 : NULL;
+ }
+
+ free(copy);
+ return ret;
+}
+
+int
+rb_parse_mib(const char* mib, struct snmp_value* value)
+{
+ /*
+ * TODO: Eventually we'll have code here to parse symbolic
+ * names, and initialize snmp_value to the right type and
+ * all that jazz. For now we just have numeric OID support.
+ */
+
+ value->syntax = SNMP_SYNTAX_NULL;
+ memset(&(value->v), 0, sizeof(value->v));
+
+ return parse_numeric_mib(mib, &(value->var));
+}
diff --git a/daemon/snmpclient.c b/daemon/snmpclient.c
new file mode 100644
index 0000000..5d316ad
--- /dev/null
+++ b/daemon/snmpclient.c
@@ -0,0 +1,967 @@
+/*
+ * Copyright (c) 2004-2005
+ * Hartmut Brandt.
+ * All rights reserved.
+ * Copyright (c) 2001-2003
+ * Fraunhofer Institute for Open Communication Systems (FhG Fokus).
+ * All rights reserved.
+ *
+ * Author: Harti Brandt <harti@freebsd.org>
+ * Kendy Kutzner
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $Begemot: bsnmp/lib/snmpclient.c,v 1.31 2005/05/23 11:10:13 brandt_h Exp $
+ *
+ * Support functions for SNMP clients.
+ */
+#include <sys/types.h>
+#include <sys/time.h>
+#include <sys/queue.h>
+#include <sys/socket.h>
+#include <sys/un.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <stddef.h>
+#include <stdarg.h>
+#include <string.h>
+#include <errno.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <netdb.h>
+#include <stdint.h>
+#include <limits.h>
+#ifdef HAVE_ERR_H
+#include <err.h>
+#endif
+
+#include "asn1.h"
+#include "snmp.h"
+#include "snmpclient.h"
+#include "snmppriv.h"
+
+/* ---------------------------------------------------------------------------- */
+
+#define LIST_EMPTY(head) ((head)->lh_first == NULL)
+#define LIST_FIRST(head) ((head)->lh_first)
+#define LIST_NEXT(elm, field) ((elm)->field.le_next)
+#define LIST_FOREACH(var, head, field) \
+ for ((var) = LIST_FIRST((head)); \
+ (var); \
+ (var) = LIST_NEXT((var), field))
+
+
+/* ---------------------------------------------------------------------------- */
+
+/* global context */
+struct snmp_client snmp_client;
+
+/* List of all outstanding requests */
+struct sent_pdu {
+ int reqid;
+ struct snmp_pdu *pdu;
+ struct timeval time;
+ u_int retrycount;
+ snmp_send_cb_f callback;
+ void *arg;
+ void *timeout_id;
+ LIST_ENTRY(sent_pdu) entries;
+};
+LIST_HEAD(sent_pdu_list, sent_pdu);
+
+static struct sent_pdu_list sent_pdus;
+
+/*
+ * Set the error string
+ */
+static void
+seterr(struct snmp_client *sc, const char *fmt, ...)
+{
+ va_list ap;
+
+ va_start(ap, fmt);
+ vsnprintf(sc->error, sizeof(sc->error), fmt, ap);
+ va_end(ap);
+}
+
+/*
+ * Initialize a client structure
+ */
+void
+snmp_client_init(struct snmp_client *c)
+{
+ memset(c, 0, sizeof(*c));
+
+ c->version = SNMP_V2c;
+ c->trans = SNMP_TRANS_UDP;
+ c->chost = NULL;
+ c->cport = NULL;
+
+ strcpy(c->read_community, "public");
+ strcpy(c->write_community, "private");
+
+ c->timeout.tv_sec = 3;
+ c->timeout.tv_usec = 0;
+ c->retries = 3;
+ c->dump_pdus = 0;
+ c->txbuflen = c->rxbuflen = 10000;
+
+ c->fd = -1;
+
+ c->max_reqid = INT32_MAX;
+ c->min_reqid = 0;
+ c->next_reqid = 0;
+}
+
+
+/*
+ * Open UDP client socket
+ */
+static int
+open_client_udp(const char *host, const char *port)
+{
+ int error;
+ char *ptr;
+ struct addrinfo hints, *res0, *res;
+
+ /* copy host- and portname */
+ if (snmp_client.chost == NULL) {
+ if ((snmp_client.chost = malloc(1 + sizeof(DEFAULT_HOST)))
+ == NULL) {
+ seterr(&snmp_client, "%s", strerror(errno));
+ return (-1);
+ }
+ strcpy(snmp_client.chost, DEFAULT_HOST);
+ }
+ if (host != NULL) {
+ if ((ptr = malloc(1 + strlen(host))) == NULL) {
+ seterr(&snmp_client, "%s", strerror(errno));
+ return (-1);
+ }
+ free(snmp_client.chost);
+ snmp_client.chost = ptr;
+ strcpy(snmp_client.chost, host);
+ }
+ if (snmp_client.cport == NULL) {
+ if ((snmp_client.cport = malloc(1 + sizeof(DEFAULT_PORT)))
+ == NULL) {
+ seterr(&snmp_client, "%s", strerror(errno));
+ return (-1);
+ }
+ strcpy(snmp_client.cport, DEFAULT_PORT);
+ }
+ if (port != NULL) {
+ if ((ptr = malloc(1 + strlen(port))) == NULL) {
+ seterr(&snmp_client, "%s", strerror(errno));
+ return (-1);
+ }
+ free(snmp_client.cport);
+ snmp_client.cport = ptr;
+ strcpy(snmp_client.cport, port);
+ }
+
+ /* open connection */
+ memset(&hints, 0, sizeof(hints));
+ hints.ai_flags = AI_CANONNAME;
+ hints.ai_family = AF_INET;
+ hints.ai_socktype = SOCK_DGRAM;
+ hints.ai_protocol = 0;
+ error = getaddrinfo(snmp_client.chost, snmp_client.cport, &hints, &res0);
+ if (error != 0) {
+ seterr(&snmp_client, "%s: %s", snmp_client.chost,
+ gai_strerror(error));
+ return (-1);
+ }
+ res = res0;
+ for (;;) {
+ if ((snmp_client.fd = socket(res->ai_family, res->ai_socktype,
+ res->ai_protocol)) == -1) {
+ if ((res = res->ai_next) == NULL) {
+ seterr(&snmp_client, "%s", strerror(errno));
+ freeaddrinfo(res0);
+ return (-1);
+ }
+ } else if (connect(snmp_client.fd, res->ai_addr,
+ res->ai_addrlen) == -1) {
+ if ((res = res->ai_next) == NULL) {
+ seterr(&snmp_client, "%s", strerror(errno));
+ freeaddrinfo(res0);
+ return (-1);
+ }
+ } else
+ break;
+ }
+ freeaddrinfo(res0);
+ return (0);
+}
+
+/*
+ * SNMP_OPEN
+ */
+int
+snmp_open(const char *host, const char *port, const char *readcomm,
+ const char *writecomm)
+{
+ struct timeval tout;
+
+ /* still open ? */
+ if (snmp_client.fd != -1) {
+ errno = EBUSY;
+ seterr(&snmp_client, "%s", strerror(errno));
+ return (-1);
+ }
+
+ /* copy community strings */
+ if (readcomm != NULL) {
+ strncpy(snmp_client.read_community, readcomm,
+ sizeof(snmp_client.read_community));
+ snmp_client.read_community[sizeof(snmp_client.read_community) - 1] = 0;
+ }
+ if (writecomm != NULL) {
+ strncpy(snmp_client.write_community, writecomm,
+ sizeof(snmp_client.write_community));
+ snmp_client.write_community[sizeof(snmp_client.write_community) - 1] = 0;
+ }
+
+ switch (snmp_client.trans) {
+
+ case SNMP_TRANS_UDP:
+ if (open_client_udp(host, port))
+ return (-1);
+ break;
+
+ default:
+ seterr(&snmp_client, "bad transport mapping");
+ return (-1);
+ }
+ tout.tv_sec = 0;
+ tout.tv_usec = 0;
+ if (setsockopt(snmp_client.fd, SOL_SOCKET, SO_SNDTIMEO,
+ &tout, sizeof(struct timeval)) == -1) {
+ seterr(&snmp_client, "%s", strerror(errno));
+ (void)close(snmp_client.fd);
+ snmp_client.fd = -1;
+ if (snmp_client.local_path[0] != '\0')
+ (void)remove(snmp_client.local_path);
+ return (-1);
+ }
+
+ /* initialize list */
+ LIST_INIT(&sent_pdus);
+
+ return (0);
+}
+
+
+/*
+ * SNMP_CLOSE
+ *
+ * closes connection to snmp server
+ * - function cannot fail
+ * - clears connection
+ * - clears list of sent pdus
+ *
+ * input:
+ * void
+ * return:
+ * void
+ */
+void
+snmp_close(void)
+{
+ struct sent_pdu *p1;
+
+ if (snmp_client.fd != -1) {
+ (void)close(snmp_client.fd);
+ snmp_client.fd = -1;
+ if (snmp_client.local_path[0] != '\0')
+ (void)remove(snmp_client.local_path);
+ }
+ while(!LIST_EMPTY(&sent_pdus)){
+ p1 = LIST_FIRST(&sent_pdus);
+ if (p1->timeout_id != NULL)
+ snmp_client.timeout_stop(p1->timeout_id);
+ LIST_REMOVE(p1, entries);
+ free(p1);
+ }
+ free(snmp_client.chost);
+ free(snmp_client.cport);
+}
+
+/*
+ * initialize a snmp_pdu structure
+ */
+void
+snmp_pdu_create(struct snmp_pdu *pdu, u_int op)
+{
+ memset(pdu,0,sizeof(struct snmp_pdu));
+ if (op == SNMP_PDU_SET)
+ strncpy(pdu->community, snmp_client.write_community,
+ sizeof(pdu->community));
+ else
+ strncpy(pdu->community, snmp_client.read_community,
+ sizeof(pdu->community));
+ pdu->community[sizeof(pdu->community) - 1] = 0;
+
+
+ pdu->type = op;
+ pdu->version = snmp_client.version;
+ pdu->error_status = 0;
+ pdu->error_index = 0;
+ pdu->nbindings = 0;
+}
+
+/* add pairs of (struct asn_oid, enum snmp_syntax) to an existing pdu */
+/* added 10/04/02 by kek: check for MAX_BINDINGS */
+int
+snmp_add_binding(struct snmp_v1_pdu *pdu, ...)
+{
+ va_list ap;
+ const struct asn_oid *oid;
+ u_int ret;
+
+ va_start(ap, pdu);
+
+ ret = pdu->nbindings;
+ while ((oid = va_arg(ap, const struct asn_oid *)) != NULL) {
+ if (pdu->nbindings >= SNMP_MAX_BINDINGS){
+ va_end(ap);
+ return (-1);
+ }
+ pdu->bindings[pdu->nbindings].var = *oid;
+ pdu->bindings[pdu->nbindings].syntax =
+ va_arg(ap, enum snmp_syntax);
+ pdu->nbindings++;
+ }
+ va_end(ap);
+ return (ret);
+}
+
+
+static int32_t
+snmp_next_reqid(struct snmp_client * c)
+{
+ int32_t i;
+
+ i = c->next_reqid;
+ if (c->next_reqid >= c->max_reqid)
+ c->next_reqid = c->min_reqid;
+ else
+ c->next_reqid++;
+ return (i);
+}
+
+/*
+ * Send request and return request id.
+ */
+static int32_t
+snmp_send_packet(struct snmp_pdu * pdu)
+{
+ u_char *buf;
+ struct asn_buf b;
+ ssize_t ret;
+
+ if ((buf = malloc(snmp_client.txbuflen)) == NULL) {
+ seterr(&snmp_client, "%s", strerror(errno));
+ return (-1);
+ }
+
+ pdu->request_id = snmp_next_reqid(&snmp_client);
+
+ b.asn_ptr = buf;
+ b.asn_len = snmp_client.txbuflen;
+ if (snmp_pdu_encode(pdu, &b)) {
+ seterr(&snmp_client, "%s", strerror(errno));
+ free(buf);
+ return (-1);
+ }
+
+ if (snmp_client.dump_pdus)
+ snmp_pdu_dump(pdu);
+
+ if ((ret = send(snmp_client.fd, buf, b.asn_ptr - buf, 0)) == -1) {
+ seterr(&snmp_client, "%s", strerror(errno));
+ free(buf);
+ return (-1);
+ }
+ free(buf);
+
+ return pdu->request_id;
+}
+
+/*
+ * to be called when a snmp request timed out
+ */
+static void
+snmp_timeout(void * listentry_ptr)
+{
+ struct sent_pdu *listentry = listentry_ptr;
+
+#if 0
+ warnx("snmp request %i timed out, attempt (%i/%i)",
+ listentry->reqid, listentry->retrycount, snmp_client.retries);
+#endif
+
+ listentry->retrycount++;
+ if (listentry->retrycount > snmp_client.retries) {
+ /* there is no answer at all */
+ LIST_REMOVE(listentry, entries);
+ listentry->callback(listentry->pdu, NULL, listentry->arg);
+ free(listentry);
+ } else {
+ /* try again */
+ /* new request with new request ID */
+ listentry->reqid = snmp_send_packet(listentry->pdu);
+ listentry->timeout_id =
+ snmp_client.timeout_start(&snmp_client.timeout,
+ snmp_timeout, listentry);
+ }
+}
+
+int32_t
+snmp_pdu_send(struct snmp_pdu *pdu, snmp_send_cb_f func, void *arg)
+{
+ struct sent_pdu *listentry;
+ int32_t id;
+
+ if ((listentry = malloc(sizeof(struct sent_pdu))) == NULL) {
+ seterr(&snmp_client, "%s", strerror(errno));
+ return (-1);
+ }
+
+ /* here we really send */
+ if ((id = snmp_send_packet(pdu)) == -1) {
+ free(listentry);
+ return (-1);
+ }
+
+ /* add entry to list of sent PDUs */
+ listentry->pdu = pdu;
+ if (gettimeofday(&listentry->time, NULL) == -1)
+ warn("gettimeofday() failed");
+
+ listentry->reqid = pdu->request_id;
+ listentry->callback = func;
+ listentry->arg = arg;
+ listentry->retrycount=1;
+ listentry->timeout_id =
+ snmp_client.timeout_start(&snmp_client.timeout, snmp_timeout,
+ listentry);
+
+ LIST_INSERT_HEAD(&sent_pdus, listentry, entries);
+
+ return (id);
+}
+
+/*
+ * Receive an SNMP packet.
+ *
+ * tv controls how we wait for a packet: if tv is a NULL pointer,
+ * the receive blocks forever, if tv points to a structure with all
+ * members 0 the socket is polled, in all other cases tv specifies the
+ * maximum time to wait for a packet.
+ *
+ * Return:
+ * -1 on errors
+ * 0 on timeout
+ * +1 if packet received
+ */
+static int
+snmp_receive_packet(struct snmp_pdu *pdu, struct timeval *tv)
+{
+ int dopoll, setpoll;
+ int flags;
+ int saved_errno;
+ u_char *buf;
+ int ret;
+ struct asn_buf abuf;
+ int32_t ip;
+#ifdef bsdi
+ int optlen;
+#else
+ socklen_t optlen;
+#endif
+
+ if ((buf = malloc(snmp_client.rxbuflen)) == NULL) {
+ seterr(&snmp_client, "%s", strerror(errno));
+ return (-1);
+ }
+ dopoll = setpoll = 0;
+ flags = 0;
+ if (tv != NULL) {
+ /* poll or timeout */
+ if (tv->tv_sec != 0 || tv->tv_usec != 0) {
+ /* wait with timeout */
+ if (setsockopt(snmp_client.fd, SOL_SOCKET, SO_RCVTIMEO,
+ tv, sizeof(*tv)) == -1) {
+ seterr(&snmp_client, "setsockopt: %s",
+ strerror(errno));
+ free(buf);
+ return (-1);
+ }
+ optlen = sizeof(*tv);
+ if (getsockopt(snmp_client.fd, SOL_SOCKET, SO_RCVTIMEO,
+ tv, &optlen) == -1) {
+ seterr(&snmp_client, "getsockopt: %s",
+ strerror(errno));
+ free(buf);
+ return (-1);
+ }
+ /* at this point tv_sec and tv_usec may appear
+ * as 0. This happens for timeouts lesser than
+ * the clock granularity. The kernel rounds these to
+ * 0 and this would result in a blocking receive.
+ * Instead of an else we check tv_sec and tv_usec
+ * again below and if this rounding happens,
+ * switch to a polling receive. */
+ }
+ if (tv->tv_sec == 0 && tv->tv_usec == 0) {
+ /* poll */
+ dopoll = 1;
+ if ((flags = fcntl(snmp_client.fd, F_GETFL, 0)) == -1) {
+ seterr(&snmp_client, "fcntl: %s",
+ strerror(errno));
+ free(buf);
+ return (-1);
+ }
+ if (!(flags & O_NONBLOCK)) {
+ setpoll = 1;
+ flags |= O_NONBLOCK;
+ if (fcntl(snmp_client.fd, F_SETFL, flags) == -1) {
+ seterr(&snmp_client, "fcntl: %s",
+ strerror(errno));
+ free(buf);
+ return (-1);
+ }
+ }
+ }
+ }
+ ret = recv(snmp_client.fd, buf, snmp_client.rxbuflen, 0);
+ saved_errno = errno;
+ if (tv != NULL) {
+ if (dopoll) {
+ if (setpoll) {
+ flags &= ~O_NONBLOCK;
+ (void)fcntl(snmp_client.fd, F_SETFL, flags);
+ }
+ } else {
+ tv->tv_sec = 0;
+ tv->tv_usec = 0;
+ (void)setsockopt(snmp_client.fd, SOL_SOCKET, SO_RCVTIMEO,
+ tv, sizeof(*tv));
+ }
+ }
+ if (ret == -1) {
+ free(buf);
+ if (errno == EAGAIN || errno == EWOULDBLOCK)
+ return (0);
+ seterr(&snmp_client, "recv: %s", strerror(saved_errno));
+ return (-1);
+ }
+ if (ret == 0) {
+ /* this happens when we have a streaming socket and the
+ * remote side has closed it */
+ free(buf);
+ seterr(&snmp_client, "recv: socket closed by peer");
+ errno = EPIPE;
+ return (-1);
+ }
+
+ abuf.asn_ptr = buf;
+ abuf.asn_len = ret;
+
+ if (SNMP_CODE_OK != (ret = snmp_pdu_decode(&abuf, pdu, &ip))) {
+ seterr(&snmp_client, "snmp_decode_pdu: failed %d", ret);
+ free(buf);
+ return (-1);
+ }
+ free(buf);
+ if (snmp_client.dump_pdus)
+ snmp_pdu_dump(pdu);
+
+ return (+1);
+}
+
+static int
+snmp_deliver_packet(struct snmp_pdu * resp)
+{
+ struct sent_pdu *listentry;
+
+ if (resp->type != SNMP_PDU_RESPONSE) {
+ warn("ignoring snmp pdu %u", resp->type);
+ return (-1);
+ }
+
+ LIST_FOREACH(listentry, &sent_pdus, entries)
+ if (listentry->reqid == resp->request_id)
+ break;
+ if (listentry == NULL)
+ return (-1);
+
+ LIST_REMOVE(listentry, entries);
+ listentry->callback(listentry->pdu, resp, listentry->arg);
+
+ snmp_client.timeout_stop(listentry->timeout_id);
+
+ free(listentry);
+ return (0);
+}
+
+int
+snmp_receive(int blocking)
+{
+ int ret;
+
+ struct timeval tv;
+ struct snmp_pdu * resp;
+
+ memset(&tv, 0, sizeof(tv));
+
+ resp = malloc(sizeof(struct snmp_pdu));
+ if (resp == NULL) {
+ seterr(&snmp_client, "no memory for returning PDU");
+ return (-1) ;
+ }
+
+ if ((ret = snmp_receive_packet(resp, blocking ? NULL : &tv)) <= 0) {
+ free(resp);
+ return (ret);
+ }
+ ret = snmp_deliver_packet(resp);
+ snmp_pdu_free(resp);
+ free(resp);
+ return (ret);
+}
+
+
+/*
+ * Check a GETNEXT response. Here we have three possible outcomes: -1 an
+ * unexpected error happened. +1 response is ok and is within the table 0
+ * response is ok, but is behind the table or error is NOSUCHNAME. The req
+ * should point to a template PDU which contains the base OIDs and the
+ * syntaxes. This is really only useful to sweep non-sparse tables.
+ */
+static int
+ok_getnext(const struct snmp_pdu * req, const struct snmp_pdu * resp)
+{
+ u_int i;
+
+ if (resp->version != req->version) {
+ warnx("SNMP GETNEXT: response has wrong version");
+ return (-1);
+ }
+
+ if (resp->error_status == SNMP_ERR_NOSUCHNAME)
+ return (0);
+
+ if (resp->error_status != SNMP_ERR_NOERROR) {
+ warnx("SNMP GETNEXT: error %d", resp->error_status);
+ return (-1);
+ }
+ if (resp->nbindings != req->nbindings) {
+ warnx("SNMP GETNEXT: bad number of bindings in response");
+ return (-1);
+ }
+ for (i = 0; i < req->nbindings; i++) {
+ if (!asn_is_suboid(&req->bindings[i].var,
+ &resp->bindings[i].var)) {
+ if (i != 0)
+ warnx("SNMP GETNEXT: inconsistent table "
+ "response");
+ return (0);
+ }
+ if (resp->version != SNMP_V1 &&
+ resp->bindings[i].syntax == SNMP_SYNTAX_ENDOFMIBVIEW)
+ return (0);
+
+ if (resp->bindings[i].syntax != req->bindings[i].syntax) {
+ warnx("SNMP GETNEXT: bad syntax in response");
+ return (0);
+ }
+ }
+ return (1);
+}
+
+/*
+ * Check a GET response. Here we have three possible outcomes: -1 an
+ * unexpected error happened. +1 response is ok. 0 NOSUCHNAME The req should
+ * point to a template PDU which contains the OIDs and the syntaxes. This
+ * is only useful for SNMPv1 or single object GETS.
+ */
+static int
+ok_get(const struct snmp_pdu * req, const struct snmp_pdu * resp)
+{
+ u_int i;
+
+ if (resp->version != req->version) {
+ warnx("SNMP GET: response has wrong version");
+ return (-1);
+ }
+
+ if (resp->error_status == SNMP_ERR_NOSUCHNAME)
+ return (0);
+
+ if (resp->error_status != SNMP_ERR_NOERROR) {
+ warnx("SNMP GET: error %d", resp->error_status);
+ return (-1);
+ }
+
+ if (resp->nbindings != req->nbindings) {
+ warnx("SNMP GET: bad number of bindings in response");
+ return (-1);
+ }
+ for (i = 0; i < req->nbindings; i++) {
+ if (asn_compare_oid(&req->bindings[i].var,
+ &resp->bindings[i].var) != 0) {
+ warnx("SNMP GET: bad OID in response");
+ return (-1);
+ }
+ if (snmp_client.version != SNMP_V1 &&
+ (resp->bindings[i].syntax == SNMP_SYNTAX_NOSUCHOBJECT ||
+ resp->bindings[i].syntax == SNMP_SYNTAX_NOSUCHINSTANCE))
+ return (0);
+ if (resp->bindings[i].syntax != req->bindings[i].syntax) {
+ warnx("SNMP GET: bad syntax in response");
+ return (-1);
+ }
+ }
+ return (1);
+}
+
+/*
+ * Check the reponse to a SET PDU. We check: - the error status must be 0 -
+ * the number of bindings must be equal in response and request - the
+ * syntaxes must be the same in response and request - the OIDs must be the
+ * same in response and request
+ */
+static int
+ok_set(const struct snmp_pdu * req, const struct snmp_pdu * resp)
+{
+ u_int i;
+
+ if (resp->version != req->version) {
+ warnx("SNMP SET: response has wrong version");
+ return (-1);
+ }
+
+ if (resp->error_status == SNMP_ERR_NOSUCHNAME) {
+ warnx("SNMP SET: error %d", resp->error_status);
+ return (0);
+ }
+ if (resp->error_status != SNMP_ERR_NOERROR) {
+ warnx("SNMP SET: error %d", resp->error_status);
+ return (-1);
+ }
+
+ if (resp->nbindings != req->nbindings) {
+ warnx("SNMP SET: bad number of bindings in response");
+ return (-1);
+ }
+ for (i = 0; i < req->nbindings; i++) {
+ if (asn_compare_oid(&req->bindings[i].var,
+ &resp->bindings[i].var) != 0) {
+ warnx("SNMP SET: wrong OID in response to SET");
+ return (-1);
+ }
+ if (resp->bindings[i].syntax != req->bindings[i].syntax) {
+ warnx("SNMP SET: bad syntax in response");
+ return (-1);
+ }
+ }
+ return (1);
+}
+
+/*
+ * Simple checks for response PDUs against request PDUs. Return values: 1=ok,
+ * 0=nosuchname or similar, -1=failure, -2=no response at all
+ */
+int
+snmp_pdu_check(const struct snmp_pdu *req,
+ const struct snmp_pdu *resp)
+{
+ if (resp == NULL)
+ return (-2);
+
+ switch (req->type) {
+
+ case SNMP_PDU_GET:
+ return (ok_get(req, resp));
+
+ case SNMP_PDU_SET:
+ return (ok_set(req, resp));
+
+ case SNMP_PDU_GETNEXT:
+ return (ok_getnext(req, resp));
+
+ }
+ errx(1, "%s: bad pdu type %i", __func__, req->type);
+}
+
+int
+snmp_dialog(struct snmp_v1_pdu *req, struct snmp_v1_pdu *resp)
+{
+ u_int i;
+ int32_t reqid;
+ int ret;
+ struct timeval tv = snmp_client.timeout;
+ struct timeval end;
+ struct snmp_pdu pdu;
+
+ /*
+ * Make a copy of the request and replace the syntaxes by NULL
+ * if this is a GET,GETNEXT or GETBULK.
+ */
+ pdu = *req;
+ if (pdu.type == SNMP_PDU_GET || pdu.type == SNMP_PDU_GETNEXT ||
+ pdu.type == SNMP_PDU_GETBULK) {
+ for (i = 0; i < pdu.nbindings; i++)
+ pdu.bindings[i].syntax = SNMP_SYNTAX_NULL;
+ }
+
+ for (i = 0; i <= snmp_client.retries; i++) {
+ (void)gettimeofday(&end, NULL);
+ timeradd(&end, &snmp_client.timeout, &end);
+ if ((reqid = snmp_send_packet(&pdu)) == -1)
+ return (-1);
+ for (;;) {
+ (void)gettimeofday(&tv, NULL);
+ if (timercmp(&end, &tv, <=))
+ break;
+ timersub(&end, &tv, &tv);
+ if ((ret = snmp_receive_packet(resp, &tv)) == 0)
+ /* timeout */
+ break;
+
+ if (ret > 0) {
+ if (reqid == resp->request_id)
+ return (0);
+ /* not for us */
+ (void)snmp_deliver_packet(resp);
+ }
+ if (ret < 0 && errno == EPIPE)
+ /* stream closed */
+ return (-1);
+ }
+ }
+ errno = ETIMEDOUT;
+ seterr(&snmp_client, "retry count exceeded");
+ return (-1);
+}
+
+/*
+ * parse a server specification
+ *
+ * [trans::][community@][server][:port]
+ */
+int
+snmp_parse_server(struct snmp_client *sc, const char *str)
+{
+ const char *p, *s = str;
+
+ /* look for a double colon */
+ for (p = s; *p != '\0'; p++) {
+ if (*p == '\\' && p[1] != '\0') {
+ p++;
+ continue;
+ }
+ if (*p == ':' && p[1] == ':')
+ break;
+ }
+ if (*p != '\0') {
+ if (p > s) {
+ if (p - s == 3 && strncmp(s, "udp", 3) == 0)
+ sc->trans = SNMP_TRANS_UDP;
+ else if (p - s == 6 && strncmp(s, "stream", 6) == 0)
+ sc->trans = SNMP_TRANS_LOC_STREAM;
+ else if (p - s == 5 && strncmp(s, "dgram", 5) == 0)
+ sc->trans = SNMP_TRANS_LOC_DGRAM;
+ else {
+ seterr(sc, "unknown SNMP transport '%.*s'",
+ (int)(p - s), s);
+ return (-1);
+ }
+ }
+ s = p + 2;
+ }
+
+ /* look for a @ */
+ for (p = s; *p != '\0'; p++) {
+ if (*p == '\\' && p[1] != '\0') {
+ p++;
+ continue;
+ }
+ if (*p == '@')
+ break;
+ }
+
+ if (*p != '\0') {
+ if (p - s > SNMP_COMMUNITY_MAXLEN) {
+ seterr(sc, "community string too long");
+ return (-1);
+ }
+ strncpy(sc->read_community, s, p - s);
+ sc->read_community[p - s] = '\0';
+ strncpy(sc->write_community, s, p - s);
+ sc->write_community[p - s] = '\0';
+ s = p + 1;
+ }
+
+ /* look for a colon */
+ for (p = s; *p != '\0'; p++) {
+ if (*p == '\\' && p[1] != '\0') {
+ p++;
+ continue;
+ }
+ if (*p == ':')
+ break;
+ }
+
+ if (*p == ':') {
+ if (p > s) {
+ /* host:port */
+ free(sc->chost);
+ if ((sc->chost = malloc(p - s + 1)) == NULL) {
+ seterr(sc, "%s", strerror(errno));
+ return (-1);
+ }
+ strncpy(sc->chost, s, p - s);
+ sc->chost[p - s] = '\0';
+ }
+ /* port */
+ free(sc->cport);
+ if ((sc->cport = malloc(strlen(p + 1) + 1)) == NULL) {
+ seterr(sc, "%s", strerror(errno));
+ return (-1);
+ }
+ strcpy(sc->cport, p + 1);
+
+ } else if (p > s) {
+ /* host */
+ free(sc->chost);
+ if ((sc->chost = malloc(strlen(s) + 1)) == NULL) {
+ seterr(sc, "%s", strerror(errno));
+ return (-1);
+ }
+ strcpy(sc->chost, s);
+ }
+ return (0);
+}
diff --git a/daemon/snmpclient.h b/daemon/snmpclient.h
new file mode 100644
index 0000000..f47493f
--- /dev/null
+++ b/daemon/snmpclient.h
@@ -0,0 +1,187 @@
+/*
+ * Copyright (c) 2001-2003
+ * Fraunhofer Institute for Open Communication Systems (FhG Fokus).
+ * All rights reserved.
+ *
+ * Author: Harti Brandt <harti@freebsd.org>
+ * Kendy Kutzner
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $Begemot: bsnmp/lib/snmpclient.h,v 1.19 2005/05/23 11:10:14 brandt_h Exp $
+ */
+#ifndef _BSNMP_SNMPCLIENT_H
+#define _BSNMP_SNMPCLIENT_H
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/time.h>
+#include <netinet/in.h>
+#include <stddef.h>
+
+
+#define SNMP_STRERROR_LEN 200
+
+#define SNMP_LOCAL_PATH "/tmp/snmpXXXXXXXXXXXXXX"
+
+/*
+ * transport methods
+ */
+#define SNMP_TRANS_UDP 0
+#define SNMP_TRANS_LOC_DGRAM 1
+#define SNMP_TRANS_LOC_STREAM 2
+
+/* type of callback function for responses
+ * this callback function is responsible for free() any memory associated with
+ * any of the PDUs. Therefor it may call snmp_pdu_free() */
+typedef void (*snmp_send_cb_f)(struct snmp_pdu *, struct snmp_pdu *, void *);
+
+/* type of callback function for timeouts */
+typedef void (*snmp_timeout_cb_f)(void * );
+
+/* timeout start function */
+typedef void *(*snmp_timeout_start_f)(struct timeval *timeout,
+ snmp_timeout_cb_f callback, void *);
+
+/* timeout stop function */
+typedef void (*snmp_timeout_stop_f)(void *timeout_id);
+
+/*
+ * Client context.
+ */
+struct snmp_client {
+ enum snmp_version version;
+ int trans; /* which transport to use */
+
+ /* these two are read-only for the application */
+ char *cport; /* port number as string */
+ char *chost; /* host name or IP address as string */
+
+ char read_community[SNMP_COMMUNITY_MAXLEN + 1];
+ char write_community[SNMP_COMMUNITY_MAXLEN + 1];
+
+ struct timeval timeout;
+ u_int retries;
+
+ int dump_pdus;
+
+ size_t txbuflen;
+ size_t rxbuflen;
+
+ int fd;
+
+ int32_t next_reqid;
+ int32_t max_reqid;
+ int32_t min_reqid;
+
+ char error[SNMP_STRERROR_LEN];
+
+ snmp_timeout_start_f timeout_start;
+ snmp_timeout_stop_f timeout_stop;
+
+ char local_path[sizeof(SNMP_LOCAL_PATH)];
+};
+
+/* the global context */
+extern struct snmp_client snmp_client;
+
+/* initizialies a snmp_client structure */
+void snmp_client_init(struct snmp_client *);
+
+/* initialize fields */
+int snmp_client_set_host(struct snmp_client *, const char *);
+int snmp_client_set_port(struct snmp_client *, const char *);
+
+/* open connection to snmp server (hostname or portname can be NULL) */
+int snmp_open(const char *_hostname, const char *_portname,
+ const char *_read_community, const char *_write_community);
+
+/* close connection */
+void snmp_close(void);
+
+/* initialize a snmp_pdu structure */
+void snmp_pdu_create(struct snmp_pdu *, u_int _op);
+
+/* add pairs of (struct asn_oid *, enum snmp_syntax) to an existing pdu */
+int snmp_add_binding(struct snmp_pdu *, ...);
+
+/* check wheater the answer is valid or not */
+int snmp_pdu_check(const struct snmp_pdu *_req, const struct snmp_pdu *_resp);
+
+int32_t snmp_pdu_send(struct snmp_pdu *_pdu, snmp_send_cb_f _func, void *_arg);
+
+/* append an index to an oid */
+int snmp_oid_append(struct asn_oid *_oid, const char *_fmt, ...);
+
+/* receive a packet */
+int snmp_receive(int _blocking);
+
+/*
+ * This structure is used to describe an SNMP table that is to be fetched.
+ * The C-structure that is produced by the fetch function must start with
+ * a TAILQ_ENTRY and an u_int64_t.
+ */
+struct snmp_table {
+ /* base OID of the table */
+ struct asn_oid table;
+ /* type OID of the LastChange variable for the table if any */
+ struct asn_oid last_change;
+ /* maximum number of iterations if table has changed */
+ u_int max_iter;
+ /* size of the C-structure */
+ size_t entry_size;
+ /* number of index fields */
+ u_int index_size;
+ /* bit mask of required fields */
+ uint64_t req_mask;
+
+ /* indexes and columns to fetch. Ended by a NULL syntax entry */
+ struct snmp_table_entry {
+ /* the column sub-oid, ignored for index fields */
+ asn_subid_t subid;
+ /* the syntax of the column or index */
+ enum snmp_syntax syntax;
+ /* offset of the field into the C-structure. For octet strings
+ * this points to an u_char * followed by a size_t */
+ off_t offset;
+#if defined(__GNUC__) && __GNUC__ < 3
+ } entries[0];
+#else
+ } entries[];
+#endif
+};
+
+/* callback type for table fetch */
+typedef void (*snmp_table_cb_f)(void *_list, void *_arg, int _res);
+
+/* fetch a table. The argument points to a TAILQ_HEAD */
+int snmp_table_fetch(const struct snmp_table *descr, void *);
+int snmp_table_fetch_async(const struct snmp_table *, void *,
+ snmp_table_cb_f, void *);
+
+/* send a request and wait for the response */
+int snmp_dialog(struct snmp_pdu *_req, struct snmp_pdu *_resp);
+
+/* parse a server specification */
+int snmp_parse_server(struct snmp_client *, const char *);
+
+#endif /* _BSNMP_SNMPCLIENT_H */
diff --git a/daemon/usuals.h b/daemon/usuals.h
new file mode 100644
index 0000000..f83a117
--- /dev/null
+++ b/daemon/usuals.h
@@ -0,0 +1,77 @@
+/*
+ * Copyright (c) 2005, Nate Nielsen
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the
+ * following disclaimer.
+ * * Redistributions in binary form must reproduce the
+ * above copyright notice, this list of conditions and
+ * the following disclaimer in the documentation and/or
+ * other materials provided with the distribution.
+ * * The names of contributors to this software may not be
+ * used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+ * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ *
+ *
+ * CONTRIBUTORS
+ * Nate Nielsen <nielsen@memberwebs.com>
+ *
+ */
+
+#ifndef __USUALS_H__
+#define __USUALS_H__
+
+#include <sys/types.h>
+
+#include "config.h"
+
+#include <sys/types.h>
+#include <sys/param.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <string.h>
+
+#ifndef NULL
+#define NULL 0
+#endif
+
+#ifndef max
+#define max(a,b) (((a) > (b)) ? (a) : (b))
+#endif
+
+#ifndef min
+#define min(a,b) (((a) < (b)) ? (a) : (b))
+#endif
+
+#define countof(x) (sizeof(x) / sizeof(x[0]))
+
+#ifdef _DEBUG
+ #include "assert.h"
+ #define ASSERT(x) assert(x)
+#else
+ #define ASSERT(x)
+#endif
+
+#define KL(s) ((sizeof(s) - 1) / sizeof(char))
+#define RETURN(x) { ret = (x); goto finally; }
+
+#endif /* __USUALS_H__ */
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