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proxmox-spamassassin/upstream/spamc/spamc.c
Stoiko Ivanov ae52237fd8 update SpamAssassin to 4.0.0 
generated by make update-upstream

Signed-off-by: Stoiko Ivanov <s.ivanov@proxmox.com>
2023-03-13 21:13:17 +01:00

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/* <@LICENSE>
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to you 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.
* </@LICENSE>
*/
#include "config.h"
#include "version.h"
#include "libspamc.h"
#include "utils.h"
#include "spamc.h"
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "getopt.h"
#ifdef _WIN32
#include <io.h>
#include <fcntl.h>
#include <process.h>
#else
#include <syslog.h>
#include <unistd.h>
#include <netdb.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netinet/tcp.h>
#include <arpa/inet.h>
#endif
#ifdef SPAMC_SSL
#include <openssl/crypto.h>
#ifndef OPENSSL_VERSION_TEXT
#define OPENSSL_VERSION_TEXT "OpenSSL"
#endif
#endif
#ifdef HAVE_SYSEXITS_H
#include <sysexits.h>
#endif
#ifdef HAVE_ERRNO_H
#include <errno.h>
#endif
#ifdef HAVE_SYS_ERRNO_H
#include <sys/errno.h>
#endif
#ifdef HAVE_TIME_H
#include <time.h>
#endif
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#endif
#ifdef HAVE_SIGNAL_H
#include <signal.h>
#endif
#ifdef HAVE_PWD_H
#include <pwd.h>
#endif
/* SunOS 4.1.4 patch from Tom Lipkis <tal@pss.com> */
#if (defined(__sun__) && defined(__sparc__) && !defined(__svr4__)) /* SunOS */ \
|| (defined(__sgi)) /* IRIX */ \
|| (defined(__osf__)) /* Digital UNIX */ \
|| (defined(hpux) || defined(__hpux)) /* HPUX */ \
|| (defined(__CYGWIN__)) /* CygWin, Win32 */
extern int spamc_optind;
extern char *spamc_optarg;
#endif
#ifdef _WIN32
char *__progname = "spamc";
#endif
/* safe fallback defaults to on now - CRH */
int flags = SPAMC_RAW_MODE | SPAMC_SAFE_FALLBACK | SPAMC_TLSV1;
/* global to control whether we should exit(0)/exit(1) on ham/spam */
int use_exit_code = 0;
/* Aug 14, 2002 bj: global to hold -e command */
char **exec_argv;
static int timeout = 600;
static int connect_timeout = 0; /* Sep 8, 2008 mrgus: separate connect timeout */
void
check_malloc (void *ptr)
{
if(ptr == NULL) {
libspamc_log(flags, LOG_ERR,
"Error allocating memory using malloc\n");
/* this is really quite serious. we can't do anything. die */
exit(EX_OSERR);
}
}
void
print_version(void)
{
printf("%s version %s\n", "SpamAssassin Client", VERSION_STRING);
#ifdef SPAMC_SSL
printf(" compiled with SSL support (%s)\n", OPENSSL_VERSION_TEXT);
#endif
}
static void
usg(char *str)
{
printf("%s", str);
}
void
print_usage(void)
{
print_version();
usg("\n");
usg("Usage: spamc [options] [-e command [args]] < message\n");
usg("\n");
usg("Options:\n");
usg(" -d, --dest host[,host2]\n"
" Specify one or more hosts to connect to.\n"
" [default: localhost]\n");
usg(" -H , --randomize Randomize IP addresses for the looked-up\n"
" hostname.\n");
usg(" -p, --port port Specify port for connection to spamd.\n"
" [default: 783]\n");
#ifdef SPAMC_SSL
usg(" -S, --ssl Use SSL to talk to spamd.\n");
usg(" --ssl-cert cert Authenticate using SSL client certificate.\n");
usg(" --ssl-key key Specify an SSL client key PEM file.\n");
usg(" --ssl-ca-file file Specify the location of the CA PEM file.\n");
usg(" --ssl-ca-path path Specify a directory containin CA files.\n");
#endif
#ifndef _WIN32
usg(" -U, --socket path Connect to spamd via UNIX domain sockets.\n");
#endif
usg(" -F, --config path Use this configuration file.\n");
usg(" -t, --timeout timeout\n"
" Timeout in seconds for communications to\n"
" spamd. [default: 600]\n");
usg(" -n, --connect-timeout timeout\n"
" Timeout in seconds when opening a connection to\n"
" spamd. [default: 600]\n");
usg(" --filter-retries retries\n"
" Retry filtering this many times if the spamd\n"
" process fails (usually times out) [default: 1]\n");
usg(" --filter-retry-sleep sleep\n"
" Sleep for this time between failed filter\n"
" attempts, in seconds [default: 1]\n");
usg(" --connect-retries retries\n"
" Try connecting to spamd tcp socket this many times\n"
" [default: 3]\n");
usg(" --retry-sleep sleep Sleep for this time between attempts to\n"
" connect to spamd, in seconds [default: 1]\n");
usg(" -s, --max-size size Specify maximum message size, in bytes.\n"
" [default: 500k]\n");
usg(" -u, --username username\n"
" User for spamd to process this message under.\n"
" [default: current user]\n");
usg(" -L, --learntype learntype\n"
" Learn message as spam, ham or forget to\n"
" forget or unlearn the message.\n");
usg(" -C, --reporttype reporttype\n"
" Report message to collaborative filtering\n"
" databases. Report type should be 'report' for\n"
" spam or 'revoke' for ham.\n");
usg(" -B, --bsmtp Assume input is a single BSMTP-formatted\n"
" message.\n");
usg(" -c, --check Just print the summary line and set an exit\n"
" code.\n");
usg(" -y, --tests Just print the names of the tests hit.\n");
usg(" -r, --full-spam Print full report for messages identified as\n"
" spam.\n");
usg(" -R, --full Print full report for all messages.\n");
usg(" --headers Rewrite only the message headers.\n");
usg(" -E, --exitcode Filter as normal, and set an exit code.\n");
usg(" -x, --no-safe-fallback\n"
" Don't fallback safely.\n");
usg(" -X, --unavailable-tempfail\n"
" When using -x, turn 'unavailable' error into\n"
" 'tempfail'. This may be useful for an MTAs\n"
" to defer emails with a temporary SMTP error\n"
" instead of bouncing with a permanent SMTP\n"
" error.\n");
usg(" -l, --log-to-stderr Log errors and warnings to stderr.\n");
#ifndef _WIN32
usg(" -e, --pipe-to command [args]\n"
" Pipe the output to the given command instead\n"
" of stdout. This must be the last option.\n");
#endif
usg(" -h, --help Print this help message and exit.\n");
usg(" -V, --version Print spamc version and exit.\n");
usg(" -K Keepalive check of spamd.\n");
#ifdef HAVE_ZLIB_H
usg(" -z Compress mail message sent to spamd.\n");
#endif
usg(" -f (Now default, ignored.)\n");
usg(" -4 Use IPv4 only for connecting to server.\n");
usg(" -6 Use IPv6 only for connecting to server.\n");
usg("\n");
}
/**
* Does the command line parsing for argv[].
*
* Returns EX_OK or EX_TEMPFAIL if successful. EX_TEMPFAIL is a kludge for
* the cases where we want in main to return immediately; we can't exit()
* because on Windows WSACleanup() needs to be called.
*/
int
read_args(int argc, char **argv,
int *max_size, char **username, int *extratype,
struct transport *ptrn)
{
#ifndef _WIN32
const char *opts = "-BcrR46d:e:fyp:n:t:s:u:L:C:xXzSHU:ElhVKF:0:1:2";
#else
const char *opts = "-BcrR46d:fyp:n:t:s:u:L:C:xXzSHElhVKF:0:1:2";
#endif
int opt;
int ret = EX_OK;
int longind = 1;
static struct option longoptions[] = {
{ "dest", required_argument, 0, 'd' },
{ "randomize", no_argument, 0, 'H' },
{ "port", required_argument, 0, 'p' },
{ "ssl", optional_argument, 0, 'S' },
{ "ssl-cert", optional_argument, 0, 5 },
{ "ssl-key", optional_argument, 0, 6 },
{ "ssl-ca-file", optional_argument, 0, 7 },
{ "ssl-ca-path", optional_argument, 0, 8 },
{ "socket", required_argument, 0, 'U' },
{ "config", required_argument, 0, 'F' },
{ "timeout", required_argument, 0, 't' },
{ "connect-timeout", required_argument, 0, 'n'},
{ "connect-retries", required_argument, 0, 0 },
{ "retry-sleep", required_argument, 0, 1 },
{ "filter-retries", required_argument, 0, 3 },
{ "filter-retry-sleep", required_argument, 0, 4 },
{ "max-size", required_argument, 0, 's' },
{ "username", required_argument, 0, 'u' },
{ "learntype", required_argument, 0, 'L' },
{ "reporttype", required_argument, 0, 'C' },
{ "bsmtp", no_argument, 0, 'B' },
{ "check", no_argument, 0, 'c' },
{ "tests", no_argument, 0, 'y' },
{ "full-spam", no_argument, 0, 'r' },
{ "full", no_argument, 0, 'R' },
{ "headers", no_argument, 0, 2 },
{ "exitcode", no_argument, 0, 'E' },
{ "no-safe-fallback", no_argument, 0, 'x' },
{ "unavailable-tempfail", no_argument, 0, 'X' },
{ "log-to-stderr", no_argument, 0, 'l' },
{ "pipe-to", required_argument, 0, 'e' },
{ "help", no_argument, 0, 'h' },
{ "version", no_argument, 0, 'V' },
{ "compress", no_argument, 0, 'z' },
{ 0, 0, 0, 0} /* last element _must_ be all zeroes */
};
#ifdef SPAMC_SSL
ptrn->ssl_cert_file = 0;
ptrn->ssl_key_file = 0;
ptrn->ssl_ca_file = 0;
ptrn->ssl_ca_path = 0;
#endif
while ((opt = spamc_getopt_long(argc, argv, opts, longoptions,
&longind)) != -1)
{
switch (opt)
{
case 'B':
{
flags = (flags & ~SPAMC_MODE_MASK) | SPAMC_BSMTP_MODE;
break;
}
case 'c':
{
flags |= SPAMC_CHECK_ONLY;
break;
}
case 'd':
{
ptrn->type = TRANSPORT_TCP;
ptrn->hostname = spamc_optarg; /* fix the ptr to point to this string */
break;
}
#ifndef _WIN32
case 'e':
{
int i, j;
/* Allocate memory for the necessary pointers needed to
* store the remaining arguments.
*/
exec_argv = malloc(sizeof(*exec_argv) * (argc - spamc_optind + 2));
if (exec_argv == NULL) {
return EX_OSERR;
}
for (i = 0, j = spamc_optind - 1; j < argc; i++, j++) {
exec_argv[i] = argv[j];
}
exec_argv[i] = NULL;
return EX_OK;
}
#endif
case 'f':
{
/* obsolete, backward compat */
break;
}
case 'K':
{
flags |= SPAMC_PING;
break;
}
case 'l':
{
flags |= SPAMC_LOG_TO_STDERR;
break;
}
case 'H':
{
flags |= SPAMC_RANDOMIZE_HOSTS;
break;
}
case 'p':
{
ptrn->port = (unsigned short)atoi(spamc_optarg);
break;
}
case 'r':
{
flags |= SPAMC_REPORT_IFSPAM;
break;
}
case 'E':
{
use_exit_code = 1;
break;
}
case 'R':
{
flags |= SPAMC_REPORT;
break;
}
case 's':
{
*max_size = atoi(spamc_optarg);
break;
}
#ifdef SPAMC_SSL
case 'S':
{
flags |= SPAMC_USE_SSL;
if(spamc_optarg) {
libspamc_log(flags, LOG_ERR,
"Explicit specification of an SSL/TLS version no longer supported.");
ret = EX_USAGE;
}
break;
}
#endif
case 't':
{
timeout = atoi(spamc_optarg);
if(!connect_timeout) {
connect_timeout = timeout; /* Sep 8, 2008 mrgus: default to timeout if not specified */
}
break;
}
case 'n':
{
connect_timeout = atoi(spamc_optarg);
break;
}
case 'u':
{
*username = spamc_optarg;
break;
}
case 'L':
{
flags |= SPAMC_LEARN;
if (strcmp(spamc_optarg,"spam") == 0) {
*extratype = 0;
}
else if (strcmp(spamc_optarg,"ham") == 0) {
*extratype = 1;
}
else if (strcmp(spamc_optarg,"forget") == 0) {
*extratype = 2;
}
else {
libspamc_log(flags, LOG_ERR, "Please specify a legal learn type");
ret = EX_USAGE;
}
break;
}
case 'C':
{
flags |= SPAMC_REPORT_MSG;
if (strcmp(spamc_optarg,"report") == 0) {
*extratype = 0;
}
else if (strcmp(spamc_optarg,"revoke") == 0) {
*extratype = 1;
}
else {
libspamc_log(flags, LOG_ERR, "Please specify a legal report type");
ret = EX_USAGE;
}
break;
}
#ifndef _WIN32
case 'U':
{
ptrn->type = TRANSPORT_UNIX;
ptrn->socketpath = spamc_optarg;
break;
}
#endif
case 'x':
{
flags &= (~SPAMC_SAFE_FALLBACK);
break;
}
case 'X':
{
/* Only activates if -x is also used */
if (!(flags & SPAMC_SAFE_FALLBACK)) {
flags |= SPAMC_UNAVAIL_TEMPFAIL;
} else {
libspamc_log(flags, LOG_ERR, "This option is only valid if -x is set first");
}
break;
}
case 'y':
{
flags |= SPAMC_SYMBOLS;
break;
}
case '?':
case ':':
{
libspamc_log(flags, LOG_ERR, "invalid usage");
ret = EX_USAGE;
/* FALLTHROUGH */
}
case 'h':
{
print_usage();
if (ret == EX_OK)
ret = EX_TEMPFAIL;
return(ret);
}
case 'V':
{
print_version();
return(EX_TEMPFAIL);
}
case 'z':
{
#ifdef HAVE_ZLIB_H
flags |= SPAMC_USE_ZLIB;
#else
libspamc_log(flags, LOG_ERR, "spamc -z support not available");
ret = EX_USAGE;
#endif
break;
}
case '4':
{
flags |= SPAMC_USE_INET4;
flags &= ~SPAMC_USE_INET6;
break;
}
case '6':
{
flags |= SPAMC_USE_INET6;
flags &= ~SPAMC_USE_INET4;
break;
}
case 0:
{
ptrn->connect_retries = atoi(spamc_optarg);
break;
}
case 1:
{
ptrn->retry_sleep = atoi(spamc_optarg);
break;
}
case 2:
{
flags |= SPAMC_HEADERS;
break;
}
case 3:
{
ptrn->filter_retries = atoi(spamc_optarg);
break;
}
case 4:
{
ptrn->filter_retry_sleep = atoi(spamc_optarg);
break;
}
#ifdef SPAMC_SSL
case 5:
{
flags |= SPAMC_CLIENT_SSL_CERT;
ptrn->ssl_cert_file = spamc_optarg;
break;
}
case 6:
{
flags |= SPAMC_CLIENT_SSL_CERT;
ptrn->ssl_key_file = spamc_optarg;
break;
}
case 7:
{
ptrn->ssl_ca_file = spamc_optarg;
break;
}
case 8:
{
ptrn->ssl_ca_path = spamc_optarg;
break;
}
#endif
}
}
#ifdef SPAMC_SSL
if ((flags & SPAMC_CLIENT_SSL_CERT)
&& !(ptrn->ssl_cert_file && ptrn->ssl_key_file)) {
libspamc_log(flags, LOG_ERR,
"--ssl-cert and --ssl-key must be used together");
ret = EX_USAGE;
}
#endif
if (*max_size > SPAMC_MAX_MESSAGE_LEN) {
libspamc_log(flags, LOG_ERR, "-s parameter is beyond max of %d",
SPAMC_MAX_MESSAGE_LEN);
ret = EX_USAGE;
}
if ( !(flags & (SPAMC_USE_INET4 | SPAMC_USE_INET6)) ) {
/* allow any protocol family (INET or INET6) by default */
flags |= SPAMC_USE_INET4;
flags |= SPAMC_USE_INET6;
}
/* learning action has to block some parameters */
if (flags & SPAMC_LEARN) {
if (flags & SPAMC_CHECK_ONLY) {
libspamc_log(flags, LOG_ERR, "Learning excludes check only");
ret = EX_USAGE;
}
if (flags & SPAMC_PING) {
libspamc_log(flags, LOG_ERR, "Learning excludes ping");
ret = EX_USAGE;
}
if (flags & SPAMC_REPORT_IFSPAM) {
libspamc_log(flags, LOG_ERR, "Learning excludes report if spam");
ret = EX_USAGE;
}
if (flags & SPAMC_REPORT) {
libspamc_log(flags, LOG_ERR, "Learning excludes report");
ret = EX_USAGE;
}
if (flags & SPAMC_SYMBOLS) {
libspamc_log(flags, LOG_ERR, "Learning excludes symbols");
ret = EX_USAGE;
}
if (flags & SPAMC_REPORT_MSG) {
libspamc_log(flags, LOG_ERR, "Learning excludes reporting to collaborative filtering databases");
ret = EX_USAGE;
}
}
return ret;
}
/* combine_args() :: parses spamc.conf for options, and combines those
* with options passed via command line
*
* lines beginning with # or blank lines are ignored
*
* returns EX_OK on success, EX_NOINPUT on absence of a config file (success),
* and EX_CONFIG on failure
*/
int
combine_args(char *config_file, int argc, char **argv,
int *combo_argc, char **combo_argv)
{
FILE *config;
char option[CONFIG_MAX_LINE_SIZE];
int i, count = 0;
char *tok = NULL;
int is_user_defined_p = 1;
if (config_file == NULL) {
config_file = CONFIG_FILE;
is_user_defined_p = 0;
}
if ((config = fopen(config_file, "r")) == NULL) {
if (is_user_defined_p == 1) {
/* if the config file was user defined we should issue an error */
fprintf(stderr,"Failed to open config file: %s\n", config_file);
return EX_CONFIG;
}
return EX_NOINPUT;
}
while (!feof(config) && fgets(option, CONFIG_MAX_LINE_SIZE, config)) {
int option_l = strlen(option);
count++; /* increment the line counter */
if (option_l < 1 || option[0] == '#' || option[0] == '\n') {
continue;
}
if (option[option_l-1] != '\n') {
if (option_l < CONFIG_MAX_LINE_SIZE-1) {
fprintf(stderr,"Line not terminated with a newline in %s\n",
config_file);
} else {
fprintf(stderr,"Exceeded max line size (%d) in %s\n",
CONFIG_MAX_LINE_SIZE-2, config_file);
}
fclose(config);
return EX_CONFIG;
}
tok = option;
while((tok = strtok(tok, " ")) != NULL) {
if(tok[0] == '\n') break;
for(i=strlen(tok); i>0; i--) {
if(tok[i] == '\n')
tok[i] = '\0';
}
if (*combo_argc >= COMBO_ARGV_SIZE) {
fprintf(stderr,"Exceeded max number of arguments (%d) in %s\n",
COMBO_ARGV_SIZE, config_file);
fclose(config);
return EX_CONFIG;
}
combo_argv[*combo_argc] = strdup(tok);
check_malloc(combo_argv[*combo_argc]);
/* TODO: leaked. not a big deal since spamc exits quickly */
tok = NULL;
*combo_argc+=1;
}
}
fclose(config);
/* note: not starting at 0, that's the command name */
for(i=1; i<argc; i++) {
if (*combo_argc >= COMBO_ARGV_SIZE) {
fprintf(stderr,"Exceeded max number of arguments (%d) in %s\n",
COMBO_ARGV_SIZE, config_file);
return EX_CONFIG;
}
combo_argv[*combo_argc] = strdup(argv[i]);
check_malloc(combo_argv[*combo_argc]);
/* TODO: leaked. not a big deal since spamc exits quickly */
*combo_argc+=1;
}
return EX_OK;
}
void
get_output_fd(int *fd)
{
#ifndef _WIN32
int pipe_fds[2];
pid_t pid;
#endif
if (*fd != -1)
return;
/* If we aren't told to feed our output to an external app, we simply
* write to stdout.
*/
if (exec_argv == NULL) {
*fd = STDOUT_FILENO;
return;
}
#ifndef _WIN32
/* Create a pipe for communication between child and parent. */
if (pipe(pipe_fds)) {
libspamc_log(flags, LOG_ERR, "pipe creation failed: %m");
exit(EX_OSERR);
}
pid = fork();
if (pid < 0) {
libspamc_log(flags, LOG_ERR, "fork failed: %m");
exit(EX_OSERR);
}
else if (pid == 0) {
/* This is the child process:
* Normally you'd expect the parent process here, however that would
* screw up an invoker waiting on the death of the parent. So instead,
* we fork a child to feed the data and have the parent exec the new
* program.
*/
close(pipe_fds[0]);
*fd = pipe_fds[1];
return;
}
/* This is the parent process (see above) */
close(pipe_fds[1]);
if (dup2(pipe_fds[0], STDIN_FILENO)) {
libspamc_log(flags, LOG_ERR, "redirection of stdin failed: %m");
exit(EX_OSERR);
}
/* No point in leaving extra fds lying around. */
close(pipe_fds[0]);
/* Now execute the command specified. */
execv(exec_argv[0], exec_argv);
/* Whoa, something failed... */
libspamc_log(flags, LOG_ERR, "exec failed: %m");
#else
libspamc_log(flags, LOG_CRIT, "THIS MUST NOT HAPPEN AS -e IS NOT SUPPORTED UNDER WINDOWS.");
#endif
exit(EX_OSERR);
}
/**
* Determines the username of the uid spamc is running under.
*
* If the program's caller didn't identify the user to run as, use the
* current user for this. Note that we're not talking about UNIX perm-
* issions, but giving SpamAssassin a username so it can do per-user
* configuration (welcomelists & the like).
*
* Allocates memory for the username, returns EX_OK if successful.
*/
int
get_current_user(char **username)
{
#ifndef _WIN32
struct passwd *curr_user;
#endif
if (*username != NULL) {
*username = strdup(*username);
if (username == NULL)
goto fail;
goto pass;
}
#ifndef _WIN32
/* Get the passwd information for the effective uid spamc is running
* under. Setting errno to zero is recommended in the manpage.
*/
errno = 0;
curr_user = getpwuid(geteuid());
if (curr_user == NULL) {
perror("getpwuid() failed");
goto fail;
}
/* Since "curr_user" points to static library data, we don't wish to
* risk some other part of the system overwriting it, so we copy the
* username to our own buffer -- then this won't arise as a problem.
*/
*username = strdup(curr_user->pw_name);
if (*username == NULL) {
goto fail;
}
#endif
pass:
return EX_OK;
fail:
/* FIXME: The handling of SPAMC_CHECK_ONLY should probably be moved to
* the end of main()
*/
if (flags & SPAMC_CHECK_ONLY) {
printf("0/0\n");
return EX_NOTSPAM;
}
return EX_OSERR;
}
int
main(int argc, char *argv[])
{
int max_size;
char *username;
struct transport trans;
struct message m;
int out_fd = -1;
int result = EX_SOFTWARE;
int ret = EX_SOFTWARE;
int ret_conf = EX_SOFTWARE;
int extratype = 0;
int islearned = 0;
int isreported = 0;
/* these are to hold CLI and config options combined, to be passed
* to read_args() */
char *combo_argv[COMBO_ARGV_SIZE];
int combo_argc;
int i;
char *config_file = NULL;
transport_init(&trans);
#ifdef LIBSPAMC_UNIT_TESTS
/* unit test support; divert execution. will not return */
do_libspamc_unit_tests();
#endif
#ifndef _WIN32
openlog("spamc", LOG_CONS | LOG_PID, LOG_MAIL);
signal(SIGPIPE, SIG_IGN);
#endif
/* set some defaults */
max_size = 500 * 1024;
username = NULL;
combo_argc = 1;
combo_argv[0] = strdup(argv[0]);
check_malloc(combo_argv[0]);
/* TODO: leaked. not a big deal since spamc exits quickly */
for(i=0; i<argc; i++) {
if(strncmp(argv[i], "-F", 2) == 0) {
config_file = argv[i+1];
break;
}
}
ret_conf = combine_args(config_file, argc, argv, &combo_argc, combo_argv);
if (ret_conf == EX_OK) {
/* Parse the combined arguments of command line and config file */
if ((ret = read_args(combo_argc, combo_argv, &max_size, &username,
&extratype, &trans)) != EX_OK)
{
if (ret == EX_TEMPFAIL) ret = EX_OK;
goto finish;
}
}
else if (ret_conf == EX_NOINPUT) { /* no config file read */
/* parse only command line arguments (default behaviour) */
if ((ret = read_args(argc, argv, &max_size, &username,
&extratype, &trans)) != EX_OK)
{
if (ret == EX_TEMPFAIL) ret = EX_OK;
goto finish;
}
}
else { /* ret_conf == EX_CONFIG. or some other error */
ret = EX_CONFIG;
goto finish;
}
ret = get_current_user(&username);
if (ret != EX_OK)
goto finish;
if ((flags & SPAMC_RANDOMIZE_HOSTS) != 0) {
/* we don't need strong randomness; this is just so we pick
* a random host for loadbalancing.
*/
srand(getpid() ^ (unsigned int)time(NULL));
}
/**********************************************************************
* SET UP TRANSPORT
*
* This takes the user parameters and digs up what it can about how
* we connect to the spam daemon. Mainly this involves lookup up the
* hostname and getting the IP addresses to connect to.
*/
m.type = MESSAGE_NONE;
m.out = NULL;
m.outbuf = NULL;
m.raw = NULL;
m.priv = NULL;
m.max_len = max_size;
m.timeout = timeout;
m.connect_timeout = connect_timeout; /* Sep 8, 2008 mrgus: separate connect timeout */
m.is_spam = EX_NOHOST; /* default err code if can't reach the daemon */
#ifdef _WIN32
setmode(STDIN_FILENO, O_BINARY);
setmode(STDOUT_FILENO, O_BINARY);
#endif
ret = transport_setup(&trans, flags);
if (ret == EX_OK) {
ret = message_read(STDIN_FILENO, flags, &m);
if (ret == EX_OK) {
if (flags & SPAMC_LEARN) {
int msg_class = 0;
unsigned int tellflags = 0;
unsigned int didtellflags = 0;
if ((extratype == 0) || (extratype == 1)) {
if (extratype == 0) {
msg_class = SPAMC_MESSAGE_CLASS_SPAM;
}
else {
msg_class = SPAMC_MESSAGE_CLASS_HAM;
}
tellflags |= SPAMC_SET_LOCAL;
}
else {
tellflags |= SPAMC_REMOVE_LOCAL;
}
ret = message_tell(&trans, username, flags, &m, msg_class,
tellflags, &didtellflags);
if (ret == EX_OK) {
if ((extratype == 0) || (extratype == 1)) {
if (didtellflags & SPAMC_SET_LOCAL) {
islearned = 1;
}
}
else {
if (didtellflags & SPAMC_REMOVE_LOCAL) {
islearned = 1;
}
}
}
}
else if (flags & SPAMC_REPORT_MSG) {
int msg_class = 0;
unsigned int tellflags = 0;
unsigned int didtellflags = 0;
if (extratype == 0) {
msg_class = SPAMC_MESSAGE_CLASS_SPAM;
tellflags |= SPAMC_SET_REMOTE;
tellflags |= SPAMC_SET_LOCAL;
}
else {
msg_class = SPAMC_MESSAGE_CLASS_HAM;
tellflags |= SPAMC_SET_LOCAL;
tellflags |= SPAMC_REMOVE_REMOTE;
}
ret = message_tell(&trans, username, flags, &m, msg_class,
tellflags, &didtellflags);
if (ret == EX_OK) {
if (extratype == 0) {
if (didtellflags & SPAMC_SET_REMOTE) {
isreported = 1;
}
}
else {
if (didtellflags & SPAMC_REMOVE_REMOTE) {
isreported = 1;
}
}
}
}
else {
ret = message_filter(&trans, username, flags, &m);
}
free(username); username = NULL;
if (ret == EX_OK) {
get_output_fd(&out_fd);
if (flags & SPAMC_LEARN) {
if (islearned == 1) {
printf("Message successfully un/learned\n");
}
else {
printf("Message was already un/learned\n");
}
message_cleanup(&m);
goto finish;
}
else if (flags & SPAMC_REPORT_MSG) {
if (isreported == 1) {
printf("Message successfully reported/revoked\n");
}
else {
printf("Unable to report/revoke message\n");
}
message_cleanup(&m);
goto finish;
}
else if (message_write(out_fd, &m) >= 0) {
result = m.is_spam;
if ((flags & SPAMC_CHECK_ONLY) && result != EX_TOOBIG) {
message_cleanup(&m);
ret = result;
}
else {
message_cleanup(&m);
if (use_exit_code && result != EX_TOOBIG) {
ret = result;
}
}
goto finish;
}
}
}
}
free(username);
/* FAIL: */
result = m.is_spam;
if (ret != EX_OK) {
result = ret;
}
if (flags & (SPAMC_LEARN|SPAMC_PING) ) {
get_output_fd(&out_fd);
message_cleanup(&m);
}
else {
if (flags & (SPAMC_CHECK_ONLY | SPAMC_REPORT | SPAMC_REPORT_IFSPAM)) {
get_output_fd(&out_fd);
full_write(out_fd, 1, "0/0\n", 4);
}
else if (flags & SPAMC_SYMBOLS) {
/* bug 4991: -y should only output a blank line on connection failure */
get_output_fd(&out_fd);
full_write(out_fd, 1, "\n", 1);
}
else {
/* bug 5412: spamc -x should not output the message on error */
if ((flags & SPAMC_SAFE_FALLBACK) || result == EX_TOOBIG) {
get_output_fd(&out_fd);
message_dump(STDIN_FILENO, out_fd, &m, flags);
}
/* else, do NOT get_output_fd() (bug 5478) */
}
message_cleanup(&m);
if (ret == EX_TOOBIG) {
ret = EX_OK; /* too big always means exit(0) -- bug 5412 */
}
else if (flags & SPAMC_SAFE_FALLBACK) {
ret = EX_OK;
}
else if (use_exit_code) {
ret = result;
}
/* If -x and -X are used, change from EX_UNAVAILABLE TO EX_TEMPFAIL - bug 6717 */
if ((!(flags & SPAMC_SAFE_FALLBACK)) && (flags & SPAMC_UNAVAIL_TEMPFAIL) && (ret == EX_UNAVAILABLE)) {
ret = EX_TEMPFAIL;
}
}
finish:
#ifdef _WIN32
WSACleanup();
#endif
return ret;
}
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