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/*
* 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 __CLAMSMTPD_H__
#define __CLAMSMTPD_H__
#include <sock_any.h>
/* IO Buffers see clio.c ---------------------------------------------------- */
#define BUF_LEN 256
typedef struct clio
{
int fd;
const char* name;
unsigned char buf[BUF_LEN];
size_t buflen;
}
clio_t;
/* The main context --------------------------------------------------------- */
/*
* A generous maximum line length. It needs to be longer than
* a full path on this system can be, because we pass the file
* name to clamd.
*/
#if 2000 > MAXPATHLEN
#define LINE_LENGTH 2000
#else
#define LINE_LENGTH (MAXPATHLEN + 128)
#endif
typedef struct clamsmtp_context
{
unsigned int id; /* Identifier for the connection */
clio_t client; /* Connection to client */
clio_t server; /* Connection to server */
clio_t clam; /* Connection to clamd */
char line[LINE_LENGTH]; /* Working buffer */
int linelen; /* Length of valid data in above */
}
clamsmtp_context_t;
#define LINE_TOO_LONG(ctx) ((ctx)->linelen >= (LINE_LENGTH - 2))
#define RETURN(x) { ret = x; goto cleanup; }
/* Implemented in clio.c ---------------------------------------------------- */
#define CLIO_TRIM 0x00000001
#define CLIO_DISCARD 0x00000002
#define CLIO_QUIET 0x00000004
#define clio_valid(io) ((io)->fd != -1)
void clio_init(clio_t* io, const char* name);
int clio_connect(clamsmtp_context_t* ctx, clio_t* io, struct sockaddr_any* sany, const char* addrname);
void clio_disconnect(clamsmtp_context_t* ctx, clio_t* io);
int clio_select(clamsmtp_context_t* ctx, clio_t** io);
int clio_read_line(clamsmtp_context_t* ctx, clio_t* io, int trim);
int clio_write_data(clamsmtp_context_t* ctx, clio_t* io, const char* data);
int clio_write_data_raw(clamsmtp_context_t* ctx, clio_t* io, unsigned char* buf, int len);
/* Implemented in clstate.c ------------------------------------------------ */
typedef struct clstate
{
/* Settings ------------------------------- */
int debug_level; /* The level to print stuff to console */
int max_threads; /* Maximum number of threads to process at once */
struct timeval timeout; /* Timeout for communication */
struct sockaddr_any outaddr; /* The outgoing address */
const char* outname;
struct sockaddr_any clamaddr; /* Address for connecting to clamd */
const char* clamname;
struct sockaddr_any listenaddr; /* Address to listen on */
const char* listenname;
const char* header; /* The header to add to email */
const char* directory; /* The directory for temp files */
int bounce; /* Send back a reject line */
int quarantine; /* Leave virus files in temp dir */
int debug_files; /* Leave all files in temp dir */
int transparent; /* Transparent proxying */
/* State --------------------------------- */
int daemonized; /* Whether process is daemonized or not */
pthread_mutex_t mutex; /* The main mutex */
int quit; /* Quit the process */
/* Internal Use ------------------------- */
char* _p;
pthread_mutexattr_t _mtxattr;
}
clstate_t;
extern const clstate_t* g_state;
void clstate_init(clstate_t* state);
int clstate_parse_config(clstate_t* state, const char* configfile);
void clstate_validate(clstate_t* state);
void clstate_cleanup(clstate_t* state);
#endif /* __CLAMSMTPD_H__ */
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