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-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
8 files changed, 1665 insertions, 0 deletions
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__ */
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