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#include <stdio.h> |
#include <stdio.h> |
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#include <stdlib.h> |
#include <stdlib.h> |
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#include <sys/types.h> |
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#include <unistd.h> |
#include <unistd.h> |
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#include <string.h> |
#include <string.h> |
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#include <limits.h> |
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#include <errno.h> |
#include <errno.h> |
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#include <limits.h> |
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#include <fcntl.h> |
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#include <setjmp.h> |
#include <setjmp.h> |
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#include <locale.h> |
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#include "config.h" |
#include "config.h" |
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#include "imapfilter.h" |
#include "imapfilter.h" |
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#include "data.h" |
#include "version.h" |
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#include "account.h" |
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#include "filter.h" |
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#include "buffer.h" |
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#if defined SSL_TLS || defined ENCRYPTED_PASSWORDS |
#if defined SSL_TLS || defined ENCRYPTED_PASSWORDS || defined CRAM_MD5 |
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#include <openssl/opensslv.h> |
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#include <openssl/crypto.h> |
#include <openssl/crypto.h> |
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#endif |
#endif |
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extern int sockpri; |
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extern account_t *accounts; |
extern account_t *accounts; |
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extern filter_t *filters; |
extern filter_t *filters; |
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extern namesp_t nsppri; |
extern buffer_t ibuf, obuf; |
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unsigned int options; /* Program options. */ |
options_t opts; /* Program options. */ |
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unsigned int flags = 0; /* Program flags. */ |
unsigned int flags = 0; /* Program flags. */ |
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unsigned int capabilities; /* Capabilities of mail server. */ |
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unsigned int interval = 0; /* Poll at the specified interval. */ |
connection_t connpri, connaux; /* Primary and auxiliary IMAP connection. */ |
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char logfile[PATH_MAX]; /* Log file. */ |
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char *home = NULL; /* User's home directory. */ |
char *home = NULL; /* User's home directory. */ |
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#ifdef MEMORY_LOCK |
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uid_t ruid, euid; /* Real and effective UID. */ |
jmp_buf acctloop; /* Non-local exit in case of network error. */ |
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#endif |
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jmp_buf acctloop; |
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void imapfilter(void); |
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void daemonize(void); |
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void usage(void); |
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void version(void); |
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/* |
/* |
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* In the beginning there was main()... |
* IMAPFilter: an IMAP mail filtering utility. |
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*/ |
*/ |
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int main(int argc, char *argv[]) |
int |
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main(int argc, char *argv[]) |
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{ |
{ |
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int c, r, f = 0; |
int c; |
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pid_t pid; |
char *cf; |
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char *confile = NULL; /* Configuration file. */ |
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account_t *ca; /* Current account. */ |
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mbox_t *cm; /* Current mailbox. */ |
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#ifdef MEMORY_LOCK |
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ruid = getuid(); |
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euid = geteuid(); |
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seteuid(ruid); /* Drop root privileges. */ |
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#endif |
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home = getenv("HOME"); |
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options = (OPTION_DETAILS_NORMAL | OPTION_NAMESPACE | OPTION_WARNING); |
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*logfile = 0; |
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while ((c = getopt(argc, argv, "c:d:hkl:" |
setlocale(LC_ALL, ""); |
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opts.debug = 0; |
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opts.verbosity = 0; |
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opts.timeout = -1; |
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opts.daemon = 0; |
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opts.headers = 0; |
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opts.errors = 0; |
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opts.namespace = 1; |
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opts.expunge = 0; |
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opts.subscribe = 0; |
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opts.peek = 1; |
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opts.passwd_editor = 0; |
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opts.charset[0] = '\0'; |
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opts.logfile[0] = '\0'; |
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opts.force_protocol = PROTOCOL_NONE; |
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home = getenv("HOME"); |
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cf = NULL; |
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connpri.sock = connaux.sock = -1; |
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while ((c = getopt(argc, argv, "DVc:d:kl:" |
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#ifdef ENCRYPTED_PASSWORDS |
#ifdef ENCRYPTED_PASSWORDS |
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"p" |
"p" |
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#endif |
#endif |
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"qvV")) != -1) { |
"qv")) != -1) { |
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switch (c) { |
switch (c) { |
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case 'c': |
case 'D': |
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confile = optarg; |
if (opts.debug < 2) |
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break; |
opts.debug++; |
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case 'd': |
break; |
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options |= OPTION_DAEMON_MODE; |
case 'V': |
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errno = 0; |
version(); |
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interval = strtoul(optarg, NULL, 10); |
/* NOTREACHED */ |
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if (errno) |
case 'c': |
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interval = 0; |
cf = optarg; |
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break; |
break; |
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case 'h': |
case 'd': |
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usage(); |
errno = 0; |
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exit(ERROR_UNDEFINED); |
opts.daemon = strtoul(optarg, NULL, 10); |
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break; |
if (errno) |
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case 'k': |
opts.daemon = 0; |
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kill_imapfilter(); |
break; |
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break; |
case 'k': |
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case 'l': |
kill_imapfilter(); |
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strncat(logfile, optarg, PATH_MAX - 1); |
break; |
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break; |
case 'l': |
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strncat(opts.logfile, optarg, PATH_MAX - 1); |
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break; |
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#ifdef ENCRYPTED_PASSWORDS |
#ifdef ENCRYPTED_PASSWORDS |
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case 'p': |
case 'p': |
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options |= OPTION_PASSWORD_EDITOR; |
opts.passwd_editor = 1; |
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break; |
break; |
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#endif |
#endif |
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case 'q': |
case 'q': |
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options &= OPTION_DETAILS_CLEAR; |
if (opts.verbosity > -2) |
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options |= OPTION_DETAILS_QUIET; |
opts.verbosity--; |
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break; |
break; |
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case 'v': |
case 'v': |
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options &= OPTION_DETAILS_CLEAR; |
if (opts.verbosity < 2) |
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options |= OPTION_DETAILS_VERBOSE; |
opts.verbosity++; |
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break; |
break; |
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case 'V': |
case '?': |
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version(); |
default: |
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exit(ERROR_UNDEFINED); |
usage(); |
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break; |
/* NOTREACHED */ |
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default: |
} |
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usage(); |
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exit(ERROR_UNDEFINED); |
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break; |
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} |
} |
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} |
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create_homedir(); |
debug_start(); |
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create_homedir(); |
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lockfile_check(); |
lockfile_check(); |
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lockfile_create(); |
lockfile_create(); |
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corefile_disable(); |
if (!opts.debug) |
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corefile_disable(); |
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tty_store(); |
tty_store(); |
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catch_signals(); |
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read_config(confile); |
catch_signals(); |
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read_config(cf); |
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#ifdef ENCRYPTED_PASSWORDS |
#ifdef ENCRYPTED_PASSWORDS |
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read_passwords(); |
read_passwords(); |
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if ((options & OPTION_PASSWORD_EDITOR)) { |
if (opts.passwd_editor) { |
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password_editor(); |
password_editor(); |
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secmem_clear(); |
secmem_clear(); |
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lockfile_remove(); |
lockfile_remove(); |
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exit(0); |
exit(0); |
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} |
} |
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#endif |
#endif |
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open_logfile(); |
log_start(); |
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init_vbuf(); |
buffer_init(&ibuf); |
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buffer_init(&obuf); |
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if (options & OPTION_DAEMON_MODE) { |
if (opts.daemon) |
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f = 1; |
opts.verbosity = -2; |
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options &= OPTION_DETAILS_CLEAR; |
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options |= OPTION_DETAILS_QUIET; |
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} |
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do { |
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for (ca = accounts; ca; ca = ca->next) { |
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if (setjmp(acctloop)) |
do { |
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continue; |
imapfilter(); |
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if (opts.daemon && !(flags & FLAG_DAEMON)) |
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daemonize(); |
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if (opts.daemon && flags & FLAG_SIGUSR1) { |
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reread_config(cf); |
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continue; |
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} |
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if (opts.daemon > 0) |
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sleep(opts.daemon); |
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} while (opts.daemon); |
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if (init_connection(&sockpri, ca->server, ca->port, ca->ssl)) |
log_stop(); |
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continue; |
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r = greeting_response(&sockpri); |
secmem_clear(); |
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if (check_capabilities(&sockpri)) |
lockfile_remove(); |
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continue; |
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log_info(LOG_ACCOUNT, ca->key); |
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#ifdef DEBUG |
debug_stop(); |
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test(&sockpri); |
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#endif |
exit(0); |
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} |
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if (r != RESPONSE_PREAUTH) { |
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if (ca->passwdattr == PASSWORD_NONE) { |
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printf("Enter password for %s@%s: ", ca->username, |
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ca->server); |
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get_password(ca->password, PASSWORD_LEN); |
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ca->passwdattr = PASSWORD_PLAIN; |
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} |
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if (login(&sockpri, ca->username, ca->password) == |
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RESPONSE_NO) { |
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error("imapfilter: username %s or password rejected " |
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"at %s\n", ca->username, ca->server); |
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continue; |
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} |
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} |
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check_namespace(&sockpri, &nsppri); |
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for (cm = ca->mboxes; cm; cm = cm->next) |
/* |
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if (!*cm->filters) |
* Go through all accounts and apply filters to mailboxes as defined. |
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mailbox_status(&sockpri, cm->name, &nsppri); |
*/ |
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else if (!select_mailbox(&sockpri, cm->name, &nsppri)) { |
void |
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apply_filters(cm->filters); |
imapfilter(void) |
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close_mailbox(&sockpri); |
{ |
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int r; |
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account_t *ca; |
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mbox_t *cm; |
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for (ca = accounts; ca != NULL; ca = ca->next) { |
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if (setjmp(acctloop)) |
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continue; |
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200 |
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if (init_connection(&connpri, ca->server, ca->port, ca->ssl)) |
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continue; |
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r = response_greeting(&connpri); |
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205 |
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if (opts.debug) |
206 |
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test(&connpri); |
207 |
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208 |
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if (check_capabilities(&connpri)) |
209 |
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continue; |
210 |
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211 |
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#ifdef SSL_TLS |
212 |
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if (ca->ssl == SSL_DISABLED && |
213 |
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connpri.caps & CAPABILITY_STARTTLS) |
214 |
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if (negotiate_tls(&connpri) == RESPONSE_OK) |
215 |
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check_capabilities(&connpri); |
216 |
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#endif |
217 |
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218 |
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log_info(LOG_ACCOUNT, ca->key); |
219 |
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220 |
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if (r != RESPONSE_PREAUTH) { |
221 |
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if (ca->pass_attr == PASS_ATTR_NONE) { |
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printf("Enter password for %s@%s: ", |
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ca->user, ca->server); |
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get_password(ca->pass, PASS_LEN); |
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ca->pass_attr = PASS_ATTR_PLAIN; |
226 |
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} |
227 |
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#ifdef CRAM_MD5 |
228 |
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if (connpri.caps & CAPABILITY_CRAMMD5) |
229 |
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r = auth_cram_md5(&connpri, ca->user, ca->pass); |
230 |
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else |
231 |
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#endif |
232 |
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r = login(&connpri, ca->user, ca->pass); |
233 |
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234 |
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if (r == RESPONSE_NO) { |
235 |
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error("username %s or password rejected " |
236 |
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"at %s\n", ca->user, ca->server); |
237 |
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continue; |
238 |
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} |
239 |
} |
} |
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logout(&sockpri); |
check_namespace(&connpri); |
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242 |
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for (cm = ca->mboxes; cm != NULL; cm = cm->next) |
243 |
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if (*cm->filters == NULL) |
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mailbox_status(&connpri, cm->name); |
245 |
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else if (!select_mailbox(&connpri, cm->name)) { |
246 |
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apply_filters(cm->name, cm->filters); |
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close_mailbox(&connpri); |
248 |
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} |
249 |
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logout(&connpri); |
250 |
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251 |
close_connection(&sockpri); |
close_connection(&connpri); |
252 |
} |
} |
253 |
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} |
254 |
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255 |
/* Fork if in daemon mode. */ |
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256 |
if (f) { |
/* |
257 |
f = 0; |
* Fork if in daemon mode. |
258 |
pid = fork(); |
*/ |
259 |
switch (pid) { |
void |
260 |
case -1: |
daemonize(void) |
261 |
fatal(ERROR_FORK, "imapfilter: forking; %s\n", strerror(errno)); |
{ |
262 |
break; |
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263 |
case 0: |
switch (fork()) { |
264 |
#ifdef MEMORY_LOCK |
case -1: |
265 |
secmem_lock(); |
fatal(ERROR_FORK, "forking; %s\n", strerror(errno)); |
266 |
setuid(ruid); /* Capability to regain root privileges will |
break; |
267 |
not be needed any more. */ |
case 0: |
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#endif |
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lockfile_create(); |
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corefile_disable(); |
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268 |
break; |
break; |
269 |
default: |
default: |
270 |
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log_stop(); |
271 |
secmem_clear(); |
secmem_clear(); |
272 |
close_logfile(); |
debug_stop(); |
273 |
exit(0); |
exit(0); |
274 |
break; |
break; |
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} |
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275 |
} |
} |
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if (interval) |
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sleep(interval); |
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} while (options & OPTION_DAEMON_MODE && interval); |
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276 |
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277 |
secmem_clear(); |
if (setsid() == -1) |
278 |
close_logfile(); |
fatal(ERROR_FORK, "creating session; %s\n", strerror(errno)); |
279 |
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280 |
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switch (fork()) { |
281 |
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case -1: |
282 |
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fatal(ERROR_FORK, "forking; %s\n", strerror(errno)); |
283 |
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break; |
284 |
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case 0: |
285 |
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break; |
286 |
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default: |
287 |
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log_stop(); |
288 |
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secmem_clear(); |
289 |
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debug_stop(); |
290 |
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exit(0); |
291 |
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break; |
292 |
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} |
293 |
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294 |
lockfile_remove(); |
close(STDIN_FILENO); |
295 |
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close(STDOUT_FILENO); |
296 |
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close(STDERR_FILENO); |
297 |
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if (open("/dev/null", O_RDWR) != -1) { |
298 |
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dup(STDIN_FILENO); |
299 |
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dup(STDIN_FILENO); |
300 |
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} |
301 |
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lockfile_create(); |
302 |
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corefile_disable(); |
303 |
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304 |
exit(0); |
flags |= FLAG_DAEMON; |
305 |
} |
} |
306 |
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307 |
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308 |
/* |
/* |
309 |
* Print a very brief usage message. |
* Print a very brief usage message. |
310 |
*/ |
*/ |
311 |
void usage(void) |
void |
312 |
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usage(void) |
313 |
{ |
{ |
314 |
fprintf(stderr, |
|
315 |
"usage: imapfilter [-hk" |
fprintf(stderr, |
316 |
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"usage: imapfilter [-DVbk" |
317 |
#ifdef ENCRYPTED_PASSWORDS |
#ifdef ENCRYPTED_PASSWORDS |
318 |
"p" |
"p" |
319 |
#endif |
#endif |
320 |
"qvV] [-c configfile] [-d interval] [-l logfile]\n"); |
"qv] [-c configfile] [-d interval] [-l logfile]\n"); |
321 |
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322 |
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exit(ERROR_UNDEFINED); |
323 |
} |
} |
324 |
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325 |
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326 |
/* |
/* |
327 |
* Print program's version, and if it is built in, OpenSSL's version number. |
* Print program's version, and if it is built in, OpenSSL's version number. |
328 |
*/ |
*/ |
329 |
void version(void) |
void |
330 |
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version(void) |
331 |
{ |
{ |
332 |
fprintf(stderr, "IMAPFilter %s" |
|
333 |
#if defined SSL_TLS || defined ENCRYPTED_PASSWORDS |
fprintf(stderr, "IMAPFilter %s" |
334 |
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#if defined SSL_TLS || defined ENCRYPTED_PASSWORDS || defined CRAM_MD5 |
335 |
", OpenSSL 0x%8.8lx" |
", OpenSSL 0x%8.8lx" |
336 |
#endif |
#endif |
337 |
"\n", IMAPFILTER_VERSION |
"\n", IMAPFILTER_VERSION |
338 |
#if defined SSL_TLS || defined ENCRYPTED_PASSWORDS |
#if defined SSL_TLS || defined ENCRYPTED_PASSWORDS || defined CRAM_MD5 |
339 |
,SSLeay() |
,SSLeay() |
340 |
#endif |
#endif |
341 |
); |
); |
342 |
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343 |
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exit(ERROR_UNDEFINED); |
344 |
} |
} |