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sievec.c
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sievec.c
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/* sievec.c -- compile a sieve script to bytecode manually
* Rob Siemborski
*
* Copyright (c) 1994-2008 Carnegie Mellon University. All rights reserved.
*
* 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.
*
* 3. The name "Carnegie Mellon University" must not be used to
* endorse or promote products derived from this software without
* prior written permission. For permission or any legal
* details, please contact
* Carnegie Mellon University
* Center for Technology Transfer and Enterprise Creation
* 4615 Forbes Avenue
* Suite 302
* Pittsburgh, PA 15213
* (412) 268-7393, fax: (412) 268-7395
* innovation@andrew.cmu.edu
*
* 4. Redistributions of any form whatsoever must retain the following
* acknowledgment:
* "This product includes software developed by Computing Services
* at Carnegie Mellon University (http://www.cmu.edu/computing/)."
*
* CARNEGIE MELLON UNIVERSITY DISCLAIMS ALL WARRANTIES WITH REGARD TO
* THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS, IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY BE LIABLE
* FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
* AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
* $Id: sievec.c,v 1.10 2010/01/06 17:01:59 murch Exp $
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include "sieve_interface.h"
#include <syslog.h>
#include "libconfig.h"
#include "xmalloc.h"
#include "script.h"
#include <string.h>
#include <stdlib.h>
#include <sys/file.h>
#include <unistd.h>
#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
/* config.c stuff */
const int config_need_data = 0;
int is_script_parsable(FILE *stream, char **errstr, sieve_script_t **ret);
#define TIMSIEVE_FAIL -1
#define TIMSIEVE_OK 0
int main(int argc, char **argv)
{
FILE *instream;
char *err = NULL;
sieve_script_t *s;
bytecode_info_t *bc;
int c, fd, usage_error = 0;
char *alt_config = NULL;
while ((c = getopt(argc, argv, "C:")) != EOF)
switch (c) {
case 'C': /* alt config file */
alt_config = optarg;
break;
default:
usage_error = 1;
break;
}
if (usage_error || (argc - optind) < 2) {
fprintf(stderr, "Syntax: %s [-C <altconfig>] <filename> <outputfile>\n",
argv[0]);
exit(1);
}
instream = fopen(argv[optind++],"r");
if(instream == NULL) {
fprintf(stderr, "Unable to open %s for reading\n", argv[1]);
exit(1);
}
/* Load configuration file. */
config_read(alt_config);
if(is_script_parsable(instream, &err, &s) == TIMSIEVE_FAIL) {
if(err) {
fprintf(stderr, "Unable to parse script: %s\n", err);
} else {
fprintf(stderr, "Unable to parse script.\n");
}
exit(1);
}
/* Now, generate the bytecode */
if(sieve_generate_bytecode(&bc, s) == -1) {
fprintf(stderr, "bytecode generate failed\n");
exit(1);
}
/* Now, open the new file */
fd = open(argv[optind], O_CREAT | O_TRUNC | O_WRONLY, 0644);
if(fd < 0) {
fprintf(stderr, "couldn't open bytecode output file\n");
exit(1);
}
/* Now, emit the bytecode */
if(sieve_emit_bytecode(fd, bc) == -1) {
fprintf(stderr, "bytecode emit failed\n");
exit(1);
}
close(fd);
sieve_free_bytecode(&bc);
sieve_script_free(&s);
return 0;
}
/* to make larry's stupid functions happy :) */
static void foo(void)
{
fatal("stub function called", 0);
}
sieve_vacation_t vacation = {
0, /* min response */
0, /* max response */
(sieve_callback *) &foo, /* autorespond() */
(sieve_callback *) &foo /* send_response() */
};
static int sieve_notify(void *ac __attribute__((unused)),
void *interp_context __attribute__((unused)),
void *script_context __attribute__((unused)),
void *message_context __attribute__((unused)),
const char **errmsg __attribute__((unused)))
{
fatal("stub function called", 0);
return SIEVE_FAIL;
}
static int mysieve_error(int lineno, const char *msg,
void *i __attribute__((unused)), void *s)
{
char buf[1024];
char **errstr = (char **) s;
snprintf(buf, 80, "line %d: %s\r\n", lineno, msg);
*errstr = xrealloc(*errstr, strlen(*errstr) + strlen(buf) + 30);
syslog(LOG_DEBUG, "%s", buf);
strcat(*errstr, buf);
return SIEVE_OK;
}
void fatal(const char *s, int code)
{
fprintf(stderr, "Fatal error: %s (%d)\r\n", s, code);
exit(1);
}
/* end the boilerplate */
/* returns TRUE or FALSE */
int is_script_parsable(FILE *stream, char **errstr, sieve_script_t **ret)
{
sieve_interp_t *i;
sieve_script_t *s;
int res;
res = sieve_interp_alloc(&i, NULL);
if (res != SIEVE_OK) {
syslog(LOG_ERR, "sieve_interp_alloc() returns %d\n", res);
return TIMSIEVE_FAIL;
}
res = sieve_register_redirect(i, (sieve_callback *) &foo);
if (res != SIEVE_OK) {
syslog(LOG_ERR, "sieve_register_redirect() returns %d\n", res);
goto done;
}
res = sieve_register_discard(i, (sieve_callback *) &foo);
if (res != SIEVE_OK) {
syslog(LOG_ERR, "sieve_register_discard() returns %d\n", res);
goto done;
}
res = sieve_register_reject(i, (sieve_callback *) &foo);
if (res != SIEVE_OK) {
syslog(LOG_ERR, "sieve_register_reject() returns %d\n", res);
goto done;
}
res = sieve_register_fileinto(i, (sieve_callback *) &foo);
if (res != SIEVE_OK) {
syslog(LOG_ERR, "sieve_register_fileinto() returns %d\n", res);
goto done;
}
res = sieve_register_keep(i, (sieve_callback *) &foo);
if (res != SIEVE_OK) {
syslog(LOG_ERR, "sieve_register_keep() returns %d\n", res);
goto done;
}
res = sieve_register_imapflags(i, NULL);
if (res != SIEVE_OK) {
syslog(LOG_ERR, "sieve_register_imapflags() returns %d\n", res);
goto done;
}
res = sieve_register_size(i, (sieve_get_size *) &foo);
if (res != SIEVE_OK) {
syslog(LOG_ERR, "sieve_register_size() returns %d\n", res);
goto done;
}
res = sieve_register_header(i, (sieve_get_header *) &foo);
if (res != SIEVE_OK) {
syslog(LOG_ERR, "sieve_register_header() returns %d\n", res);
goto done;
}
res = sieve_register_envelope(i, (sieve_get_envelope *) &foo);
if (res != SIEVE_OK) {
syslog(LOG_ERR, "sieve_register_envelope() returns %d\n", res);
goto done;
}
res = sieve_register_body(i, (sieve_get_body *) &foo);
if (res != SIEVE_OK) {
syslog(LOG_ERR, "sieve_register_body() returns %d\n", res);
goto done;
}
res = sieve_register_include(i, (sieve_get_include *) &foo);
if (res != SIEVE_OK) {
syslog(LOG_ERR, "sieve_register_include() returns %d\n", res);
goto done;
}
res = sieve_register_vacation(i, &vacation);
if (res != SIEVE_OK) {
syslog(LOG_ERR, "sieve_register_vacation() returns %d\n", res);
goto done;
}
res = sieve_register_notify(i, &sieve_notify);
if (res != SIEVE_OK) {
syslog(LOG_ERR, "sieve_register_notify() returns %d\n", res);
goto done;
}
res = sieve_register_parse_error(i, &mysieve_error);
if (res != SIEVE_OK) {
syslog(LOG_ERR, "sieve_register_parse_error() returns %d\n", res);
goto done;
}
rewind(stream);
*errstr = (char *) xmalloc(20 * sizeof(char));
strcpy(*errstr, "script errors:\r\n");
res = sieve_script_parse(i, stream, errstr, &s);
if (res == SIEVE_OK) {
if(ret) {
*ret = s;
} else {
sieve_script_free(&s);
}
free(*errstr);
*errstr = NULL;
}
done:
/* free interpreter */
sieve_interp_free(&i);
return (res == SIEVE_OK) ? TIMSIEVE_OK : TIMSIEVE_FAIL;
}

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