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#include <stdio.h> |
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#include <stdlib.h> |
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#include <sys/types.h> |
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#include <unistd.h> |
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#include <string.h> |
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#include <errno.h> |
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#include <limits.h> |
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#include <fcntl.h> |
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#include <setjmp.h> |
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#include <locale.h> |
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|
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#include "config.h" |
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#include "imapfilter.h" |
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#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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|
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#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> |
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#endif |
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|
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|
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extern account_t *accounts; |
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extern filter_t *filters; |
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extern buffer_t ibuf, obuf; |
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|
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unsigned int options; /* Program options. */ |
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unsigned int flags = 0; /* Program flags. */ |
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unsigned int interval = 0; /* Poll at the specified interval. */ |
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conn_t connpri, connaux; /* Primary and auxiliary IMAP connection. */ |
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|
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char logfile[PATH_MAX]; /* Log file. */ |
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char *home = NULL; /* User's home directory. */ |
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char charset[CHARSET_LEN]; /* Charset for IMAP SEARCH requests. */ |
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|
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jmp_buf acctloop; /* Non-local exit in case of network error. */ |
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|
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|
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void usage(void); |
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void version(void); |
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|
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|
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/* |
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* IMAPFilter: an IMAP mail filtering utility. |
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*/ |
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int |
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main(int argc, char *argv[]) |
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{ |
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int c, r; |
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char *conffile; /* Configuration file. */ |
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account_t *ca; /* Current account. */ |
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mbox_t *cm; /* Current mailbox. */ |
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|
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setlocale(LC_ALL, ""); |
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|
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home = getenv("HOME"); |
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options = (OPTION_DETAILS_NORMAL | OPTION_NAMESPACE | OPTION_PEEK | |
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OPTION_PERMISSIONS); |
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*charset = 0; |
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*logfile = 0; |
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conffile = NULL; |
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connpri.sock = connaux.sock = -1; |
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|
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while ((c = getopt(argc, argv, "c:d:Dhkl:" |
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#ifdef ENCRYPTED_PASSWORDS |
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"p" |
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#endif |
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"qvV")) != -1) { |
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switch (c) { |
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case 'c': |
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conffile = optarg; |
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break; |
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case 'd': |
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options |= OPTION_DAEMON_MODE; |
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errno = 0; |
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interval = strtoul(optarg, NULL, 10); |
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if (errno) |
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interval = 0; |
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break; |
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case 'D': |
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options |= OPTION_DEBUG; |
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break; |
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case 'h': |
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usage(); |
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exit(ERROR_UNDEFINED); |
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break; |
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case 'k': |
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kill_imapfilter(); |
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break; |
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case 'l': |
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strncat(logfile, optarg, PATH_MAX - 1); |
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break; |
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#ifdef ENCRYPTED_PASSWORDS |
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case 'p': |
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options |= OPTION_PASSWORD_EDITOR; |
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break; |
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#endif |
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case 'q': |
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options &= ~(OPTION_DETAILS_QUIET | |
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OPTION_DETAILS_NORMAL | OPTION_DETAILS_VERBOSE); |
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options |= OPTION_DETAILS_QUIET; |
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break; |
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case 'v': |
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options &= ~(OPTION_DETAILS_QUIET | |
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OPTION_DETAILS_NORMAL | OPTION_DETAILS_VERBOSE); |
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options |= OPTION_DETAILS_VERBOSE; |
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break; |
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case 'V': |
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version(); |
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exit(ERROR_UNDEFINED); |
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break; |
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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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|
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debug_start(); |
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|
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create_homedir(); |
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|
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lockfile_check(); |
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lockfile_create(); |
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|
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if (!(options & OPTION_DEBUG)) |
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corefile_disable(); |
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|
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tty_store(); |
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catch_signals(); |
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|
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read_config(conffile); |
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|
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#ifdef ENCRYPTED_PASSWORDS |
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read_passwords(); |
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|
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if ((options & OPTION_PASSWORD_EDITOR)) { |
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password_editor(); |
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|
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secmem_clear(); |
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lockfile_remove(); |
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|
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exit(0); |
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} |
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#endif |
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|
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log_start(); |
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|
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init_buffer(&ibuf); |
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init_buffer(&obuf); |
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|
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if (options & OPTION_DAEMON_MODE) { |
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options &= ~(OPTION_DETAILS_QUIET | |
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OPTION_DETAILS_NORMAL | OPTION_DETAILS_VERBOSE); |
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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 != NULL; ca = ca->next) { |
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|
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if (setjmp(acctloop)) |
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continue; |
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|
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if (init_connection(&connpri, ca->server, ca->port, |
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ca->ssl)) |
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continue; |
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|
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r = greeting_response(&connpri); |
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|
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if (options & OPTION_DEBUG) |
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test(&connpri); |
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|
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if (check_capabilities(&connpri)) |
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continue; |
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|
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#ifdef SSL_TLS |
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if (ca->ssl == SSL_DISABLED && |
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connpri.caps & CAPABILITY_STARTTLS) |
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if (negotiate_tls(&connpri) == RESPONSE_OK) |
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check_capabilities(&connpri); |
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#endif |
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|
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log_info(LOG_ACCOUNT, ca->key); |
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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: ", |
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ca->username, 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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#ifdef CRAM_MD5 |
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if (connpri.caps & CAPABILITY_AUTH_CRAM_MD5) |
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r = auth_cram_md5(&connpri, |
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ca->username, ca->password); |
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else |
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#endif |
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r = login(&connpri, ca->username, |
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ca->password); |
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|
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if (r == RESPONSE_NO) { |
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error("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(&connpri); |
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|
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for (cm = ca->mboxes; cm != NULL; cm = cm->next) |
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if (*cm->filters == NULL) |
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mailbox_status(&connpri, cm->name); |
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else if (!select_mailbox(&connpri, cm->name)) { |
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apply_filters(cm->name, cm->filters); |
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close_mailbox(&connpri); |
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} |
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logout(&connpri); |
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|
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close_connection(&connpri); |
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} |
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|
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/* Fork if in daemon mode. */ |
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if (options & OPTION_DAEMON_MODE && |
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!(flags & FLAG_DAEMON_MODE)) { |
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|
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switch (fork()) { |
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case -1: |
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fatal(ERROR_FORK, "forking; %s\n", |
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strerror(errno)); |
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break; |
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case 0: |
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break; |
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default: |
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log_stop(); |
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secmem_clear(); |
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debug_stop(); |
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exit(0); |
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break; |
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} |
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|
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if (setsid() == -1) |
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fatal(ERROR_FORK, "creating session; %s\n", |
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strerror(errno)); |
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|
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switch (fork()) { |
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case -1: |
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fatal(ERROR_FORK, "forking; %s\n", |
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strerror(errno)); |
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break; |
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case 0: |
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break; |
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default: |
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log_stop(); |
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secmem_clear(); |
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debug_stop(); |
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exit(0); |
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break; |
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} |
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|
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close(STDIN_FILENO); |
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close(STDOUT_FILENO); |
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close(STDERR_FILENO); |
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if (open("/dev/null", O_RDWR) != -1) { |
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dup(STDIN_FILENO); |
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dup(STDIN_FILENO); |
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} |
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lockfile_create(); |
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corefile_disable(); |
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|
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flags |= FLAG_DAEMON_MODE; |
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} |
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if (options & OPTION_DAEMON_MODE && |
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flags & FLAG_SIGUSR1_RECEIVED) { |
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reread_config(conffile); |
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continue; |
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} |
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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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|
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log_stop(); |
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secmem_clear(); |
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|
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lockfile_remove(); |
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|
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debug_stop(); |
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|
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exit(0); |
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} |
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|
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|
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/* |
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* Print a very brief usage message. |
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*/ |
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void |
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usage(void) |
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{ |
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fprintf(stderr, |
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"usage: imapfilter [-bDhk" |
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#ifdef ENCRYPTED_PASSWORDS |
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"p" |
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#endif |
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"qvV] [-c configfile] [-d interval] [-l logfile]\n"); |
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} |
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|
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|
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/* |
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* Print program's version, and if it is built in, OpenSSL's version number. |
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*/ |
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void |
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version(void) |
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{ |
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fprintf(stderr, "IMAPFilter %s" |
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#if defined SSL_TLS || defined ENCRYPTED_PASSWORDS || defined CRAM_MD5 |
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", OpenSSL 0x%8.8lx" |
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#endif |
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"\n", IMAPFILTER_VERSION |
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#if defined SSL_TLS || defined ENCRYPTED_PASSWORDS || defined CRAM_MD5 |
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,SSLeay() |
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#endif |
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); |
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} |
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