X-Git-Url: https://vcs.fsf.org/?a=blobdiff_plain;f=src%2Fsrc%2Fmalware.c;h=53dcb3aecfa5dec07d937eb5a2bd43d7fbeb2e89;hb=1ea70a03c5568925dcee1a35e6e6a879f2848b26;hp=b9a641c9440e7d673b7cf7d9d825652ed3e59191;hpb=2376f2f55f7f8e1df38b44908b6d39181a88a65e;p=exim.git diff --git a/src/src/malware.c b/src/src/malware.c index b9a641c94..53dcb3aec 100644 --- a/src/src/malware.c +++ b/src/src/malware.c @@ -1,4 +1,4 @@ -/* $Cambridge: exim/src/src/malware.c,v 1.4 2005/01/05 13:33:58 tom Exp $ */ +/* $Cambridge: exim/src/src/malware.c,v 1.9 2005/06/06 18:49:35 tom Exp $ */ /************************************************* * Exim - an Internet mail transport agent * @@ -29,7 +29,7 @@ int mksd_scan_packed(int sock); #define DERR_TIMEOUT (1<<9) /* scan timeout has run out */ #define DERR_BAD_CALL (1<<15) /* wrong command */ -/* Routine to check whether a system is big- or litte-endian. +/* Routine to check whether a system is big- or litte-endian. Ripped from http://www.faqs.org/faqs/graphics/fileformats-faq/part4/section-7.html Needed for proper kavdaemon implementation. Sigh. */ #define BIG_MY_ENDIAN 0 @@ -58,34 +58,34 @@ int malware(uschar **listptr) { int roffset; const pcre *re; const uschar *rerror; - + /* make sure the eml mbox file is spooled up */ mbox_file = spool_mbox(&mbox_size); if (mbox_file == NULL) { /* error while spooling */ log_write(0, LOG_MAIN|LOG_PANIC, "malware acl condition: error while creating mbox spool file"); - return DEFER; + return DEFER; }; /* none of our current scanners need the mbox file as a stream, so we can close it right away */ fclose(mbox_file); - + /* extract the malware regex to match against from the option list */ if ((malware_regex = string_nextinlist(&list, &sep, malware_regex_buffer, sizeof(malware_regex_buffer))) != NULL) { - + /* parse 1st option */ - if ( (strcmpic(malware_regex,US"false") == 0) || + if ( (strcmpic(malware_regex,US"false") == 0) || (Ustrcmp(malware_regex,"0") == 0) ) { /* explicitly no matching */ return FAIL; }; - + /* special cases (match anything except empty) */ - if ( (strcmpic(malware_regex,US"true") == 0) || - (Ustrcmp(malware_regex,"*") == 0) || + if ( (strcmpic(malware_regex,US"true") == 0) || + (Ustrcmp(malware_regex,"*") == 0) || (Ustrcmp(malware_regex,"1") == 0) ) { malware_regex = malware_regex_default; }; @@ -95,6 +95,9 @@ int malware(uschar **listptr) { return FAIL; }; + /* Reset sep that is set by previous string_nextinlist() call */ + sep = 0; + /* compile the regex, see if it works */ re = pcre_compile(CS malware_regex, PCRE_COPT, (const char **)&rerror, &roffset, NULL); if (re == NULL) { @@ -131,274 +134,274 @@ int malware(uschar **listptr) { "malware acl condition: av_scanner configuration variable is empty"); return DEFER; }; - - /* "drweb" scanner type ----------------------------------------------- */ - /* v0.1 - added support for tcp sockets */ - /* v0.0 - initial release -- support for unix sockets */ - if (strcmpic(scanner_name,US"drweb") == 0) { - uschar *drweb_options; - uschar drweb_options_buffer[1024]; - uschar drweb_options_default[] = "/usr/local/drweb/run/drwebd.sock"; - struct sockaddr_un server; - int sock, result, ovector[30]; - unsigned int port, fsize; - uschar tmpbuf[1024], *drweb_fbuf; - uschar scanrequest[1024]; - uschar drweb_match_string[128]; - int drweb_rc, drweb_cmd, drweb_flags = 0x0000, drweb_fd, - drweb_vnum, drweb_slen, drweb_fin = 0x0000; - unsigned long bread; - uschar hostname[256]; - struct hostent *he; - struct in_addr in; - pcre *drweb_re; - - if ((drweb_options = string_nextinlist(&av_scanner_work, &sep, - drweb_options_buffer, sizeof(drweb_options_buffer))) == NULL) { - /* no options supplied, use default options */ - drweb_options = drweb_options_default; - }; - - if (*drweb_options != '/') { - - /* extract host and port part */ - if( sscanf(CS drweb_options, "%s %u", hostname, &port) != 2 ) { - log_write(0, LOG_MAIN|LOG_PANIC, - "malware acl condition: drweb: invalid socket '%s'", drweb_options); - return DEFER; - } - - /* Lookup the host */ - if((he = gethostbyname(CS hostname)) == 0) { - log_write(0, LOG_MAIN|LOG_PANIC, - "malware acl condition: drweb: failed to lookup host '%s'", hostname); - return DEFER; - } - - in = *(struct in_addr *) he->h_addr_list[0]; - - /* Open the drwebd TCP socket */ - if ( (sock = ip_socket(SOCK_STREAM, AF_INET)) < 0) { - log_write(0, LOG_MAIN|LOG_PANIC, - "malware acl condition: drweb: unable to acquire socket (%s)", - strerror(errno)); - return DEFER; - } - - if (ip_connect(sock, AF_INET, (uschar*)inet_ntoa(in), port, 5) < 0) { - close(sock); - log_write(0, LOG_MAIN|LOG_PANIC, - "malware acl condition: drweb: connection to %s, port %u failed (%s)", - inet_ntoa(in), port, strerror(errno)); - return DEFER; - } - - /* prepare variables */ - drweb_cmd = htonl(DRWEBD_SCAN_CMD); - drweb_flags = htonl(DRWEBD_RETURN_VIRUSES | DRWEBD_IS_MAIL); - snprintf(CS scanrequest, 1024,CS"%s/scan/%s/%s.eml", - spool_directory, message_id, message_id); - - /* calc file size */ - drweb_fd = open(CS scanrequest, O_RDONLY); - if (drweb_fd == -1) { - close(sock); - log_write(0, LOG_MAIN|LOG_PANIC, - "malware acl condition: drweb: can't open spool file %s: %s", - scanrequest, strerror(errno)); - return DEFER; - } - fsize = lseek(drweb_fd, 0, SEEK_END); - if (fsize == -1) { - close(sock); - close(drweb_fd); - log_write(0, LOG_MAIN|LOG_PANIC, - "malware acl condition: drweb: can't seek spool file %s: %s", - scanrequest, strerror(errno)); - return DEFER; - } - drweb_slen = htonl(fsize); - lseek(drweb_fd, 0, SEEK_SET); - - /* send scan request */ - if ((send(sock, &drweb_cmd, sizeof(drweb_cmd), 0) < 0) || - (send(sock, &drweb_flags, sizeof(drweb_flags), 0) < 0) || - (send(sock, &drweb_fin, sizeof(drweb_fin), 0) < 0) || - (send(sock, &drweb_slen, sizeof(drweb_slen), 0) < 0)) { - close(sock); - close(drweb_fd); - log_write(0, LOG_MAIN|LOG_PANIC, - "malware acl condition: drweb: unable to send commands to socket (%s)", drweb_options); - return DEFER; - } - - drweb_fbuf = (uschar *) malloc (fsize); - if (!drweb_fbuf) { - close(sock); - close(drweb_fd); - log_write(0, LOG_MAIN|LOG_PANIC, - "malware acl condition: drweb: unable to allocate memory %u for file (%s)", - fsize, scanrequest); - return DEFER; - } - - result = read (drweb_fd, drweb_fbuf, fsize); - if (result == -1) { - close(sock); - close(drweb_fd); - free(drweb_fbuf); - log_write(0, LOG_MAIN|LOG_PANIC, - "malware acl condition: drweb: can't read spool file %s: %s", - scanrequest, strerror(errno)); - return DEFER; - } - close(drweb_fd); - - /* send file body to socket */ - if (send(sock, drweb_fbuf, fsize, 0) < 0) { - close(sock); - free(drweb_fbuf); - log_write(0, LOG_MAIN|LOG_PANIC, - "malware acl condition: drweb: unable to send file body to socket (%s)", drweb_options); - return DEFER; - } - close(drweb_fd); - } - else { - /* open the drwebd UNIX socket */ - sock = socket(AF_UNIX, SOCK_STREAM, 0); - if (sock < 0) { - log_write(0, LOG_MAIN|LOG_PANIC, - "malware acl condition: drweb: can't open UNIX socket"); - return DEFER; - } - server.sun_family = AF_UNIX; - Ustrcpy(server.sun_path, drweb_options); - if (connect(sock, (struct sockaddr *) &server, sizeof(struct sockaddr_un)) < 0) { - close(sock); - log_write(0, LOG_MAIN|LOG_PANIC, - "malware acl condition: drweb: unable to connect to socket (%s). errno=%d", drweb_options, errno); - return DEFER; - } - - /* prepare variables */ - drweb_cmd = htonl(DRWEBD_SCAN_CMD); - drweb_flags = htonl(DRWEBD_RETURN_VIRUSES | DRWEBD_IS_MAIL); - snprintf(CS scanrequest, 1024,CS"%s/scan/%s/%s.eml", spool_directory, message_id, message_id); - drweb_slen = htonl(Ustrlen(scanrequest)); - - /* send scan request */ - if ((send(sock, &drweb_cmd, sizeof(drweb_cmd), 0) < 0) || - (send(sock, &drweb_flags, sizeof(drweb_flags), 0) < 0) || - (send(sock, &drweb_slen, sizeof(drweb_slen), 0) < 0) || - (send(sock, scanrequest, Ustrlen(scanrequest), 0) < 0) || - (send(sock, &drweb_fin, sizeof(drweb_fin), 0) < 0)) { - close(sock); - log_write(0, LOG_MAIN|LOG_PANIC, - "malware acl condition: drweb: unable to send commands to socket (%s)", drweb_options); - return DEFER; - } - } - - /* wait for result */ - if ((bread = recv(sock, &drweb_rc, sizeof(drweb_rc), 0) != sizeof(drweb_rc))) { - close(sock); - log_write(0, LOG_MAIN|LOG_PANIC, - "malware acl condition: drweb: unable to read return code"); - return DEFER; - } - drweb_rc = ntohl(drweb_rc); - - if ((bread = recv(sock, &drweb_vnum, sizeof(drweb_vnum), 0) != sizeof(drweb_vnum))) { - close(sock); - log_write(0, LOG_MAIN|LOG_PANIC, - "malware acl condition: drweb: unable to read the number of viruses"); - return DEFER; - } - drweb_vnum = ntohl(drweb_vnum); - - /* "virus(es) found" if virus number is > 0 */ - if (drweb_vnum) - { - int i; - uschar pre_malware_nb[256]; - - malware_name = malware_name_buffer; - - /* setup default virus name */ - Ustrcpy(malware_name_buffer,"unknown"); - - /* read and concatenate virus names into one string */ - for (i=0;i= 2) { - pcre_copy_substring(CS tmpbuf, ovector, result, 1, CS pre_malware_nb, 255); - } - /* the first name we just copy to malware_name */ - if (i==0) - Ustrcpy(CS malware_name_buffer, CS pre_malware_nb); - else { - /* concatenate each new virus name to previous */ - int slen = Ustrlen(malware_name_buffer); - if (slen < (slen+Ustrlen(pre_malware_nb))) { - Ustrcat(malware_name_buffer, "/"); - Ustrcat(malware_name_buffer, pre_malware_nb); - } - } - } - } - else { - char *drweb_s = NULL; - - if (drweb_rc & DERR_READ_ERR) drweb_s = "read error"; - if (drweb_rc & DERR_NOMEMORY) drweb_s = "no memory"; - if (drweb_rc & DERR_TIMEOUT) drweb_s = "timeout"; - if (drweb_rc & DERR_BAD_CALL) drweb_s = "wrong command"; - /* retcodes DERR_SYMLINK, DERR_NO_REGFILE, DERR_SKIPPED. - * DERR_TOO_BIG, DERR_TOO_COMPRESSED, DERR_SPAM, - * DERR_CRC_ERROR, DERR_READSOCKET, DERR_WRITE_ERR - * and others are ignored */ - if (drweb_s) { - log_write(0, LOG_MAIN|LOG_PANIC, - "malware acl condition: drweb: drweb daemon retcode 0x%x (%s)", drweb_rc, drweb_s); - close(sock); - return DEFER; - } - /* no virus found */ - malware_name = NULL; - }; - close(sock); - } - /* ----------------------------------------------------------------------- */ + + /* "drweb" scanner type ----------------------------------------------- */ + /* v0.1 - added support for tcp sockets */ + /* v0.0 - initial release -- support for unix sockets */ + if (strcmpic(scanner_name,US"drweb") == 0) { + uschar *drweb_options; + uschar drweb_options_buffer[1024]; + uschar drweb_options_default[] = "/usr/local/drweb/run/drwebd.sock"; + struct sockaddr_un server; + int sock, result, ovector[30]; + unsigned int port, fsize; + uschar tmpbuf[1024], *drweb_fbuf; + uschar scanrequest[1024]; + uschar drweb_match_string[128]; + int drweb_rc, drweb_cmd, drweb_flags = 0x0000, drweb_fd, + drweb_vnum, drweb_slen, drweb_fin = 0x0000; + unsigned long bread; + uschar hostname[256]; + struct hostent *he; + struct in_addr in; + pcre *drweb_re; + + if ((drweb_options = string_nextinlist(&av_scanner_work, &sep, + drweb_options_buffer, sizeof(drweb_options_buffer))) == NULL) { + /* no options supplied, use default options */ + drweb_options = drweb_options_default; + }; + + if (*drweb_options != '/') { + + /* extract host and port part */ + if( sscanf(CS drweb_options, "%s %u", hostname, &port) != 2 ) { + log_write(0, LOG_MAIN|LOG_PANIC, + "malware acl condition: drweb: invalid socket '%s'", drweb_options); + return DEFER; + } + + /* Lookup the host */ + if((he = gethostbyname(CS hostname)) == 0) { + log_write(0, LOG_MAIN|LOG_PANIC, + "malware acl condition: drweb: failed to lookup host '%s'", hostname); + return DEFER; + } + + in = *(struct in_addr *) he->h_addr_list[0]; + + /* Open the drwebd TCP socket */ + if ( (sock = ip_socket(SOCK_STREAM, AF_INET)) < 0) { + log_write(0, LOG_MAIN|LOG_PANIC, + "malware acl condition: drweb: unable to acquire socket (%s)", + strerror(errno)); + return DEFER; + } + + if (ip_connect(sock, AF_INET, (uschar*)inet_ntoa(in), port, 5) < 0) { + close(sock); + log_write(0, LOG_MAIN|LOG_PANIC, + "malware acl condition: drweb: connection to %s, port %u failed (%s)", + inet_ntoa(in), port, strerror(errno)); + return DEFER; + } + + /* prepare variables */ + drweb_cmd = htonl(DRWEBD_SCAN_CMD); + drweb_flags = htonl(DRWEBD_RETURN_VIRUSES | DRWEBD_IS_MAIL); + snprintf(CS scanrequest, 1024,CS"%s/scan/%s/%s.eml", + spool_directory, message_id, message_id); + + /* calc file size */ + drweb_fd = open(CS scanrequest, O_RDONLY); + if (drweb_fd == -1) { + close(sock); + log_write(0, LOG_MAIN|LOG_PANIC, + "malware acl condition: drweb: can't open spool file %s: %s", + scanrequest, strerror(errno)); + return DEFER; + } + fsize = lseek(drweb_fd, 0, SEEK_END); + if (fsize == -1) { + close(sock); + close(drweb_fd); + log_write(0, LOG_MAIN|LOG_PANIC, + "malware acl condition: drweb: can't seek spool file %s: %s", + scanrequest, strerror(errno)); + return DEFER; + } + drweb_slen = htonl(fsize); + lseek(drweb_fd, 0, SEEK_SET); + + /* send scan request */ + if ((send(sock, &drweb_cmd, sizeof(drweb_cmd), 0) < 0) || + (send(sock, &drweb_flags, sizeof(drweb_flags), 0) < 0) || + (send(sock, &drweb_fin, sizeof(drweb_fin), 0) < 0) || + (send(sock, &drweb_slen, sizeof(drweb_slen), 0) < 0)) { + close(sock); + close(drweb_fd); + log_write(0, LOG_MAIN|LOG_PANIC, + "malware acl condition: drweb: unable to send commands to socket (%s)", drweb_options); + return DEFER; + } + + drweb_fbuf = (uschar *) malloc (fsize); + if (!drweb_fbuf) { + close(sock); + close(drweb_fd); + log_write(0, LOG_MAIN|LOG_PANIC, + "malware acl condition: drweb: unable to allocate memory %u for file (%s)", + fsize, scanrequest); + return DEFER; + } + + result = read (drweb_fd, drweb_fbuf, fsize); + if (result == -1) { + close(sock); + close(drweb_fd); + free(drweb_fbuf); + log_write(0, LOG_MAIN|LOG_PANIC, + "malware acl condition: drweb: can't read spool file %s: %s", + scanrequest, strerror(errno)); + return DEFER; + } + close(drweb_fd); + + /* send file body to socket */ + if (send(sock, drweb_fbuf, fsize, 0) < 0) { + close(sock); + free(drweb_fbuf); + log_write(0, LOG_MAIN|LOG_PANIC, + "malware acl condition: drweb: unable to send file body to socket (%s)", drweb_options); + return DEFER; + } + close(drweb_fd); + } + else { + /* open the drwebd UNIX socket */ + sock = socket(AF_UNIX, SOCK_STREAM, 0); + if (sock < 0) { + log_write(0, LOG_MAIN|LOG_PANIC, + "malware acl condition: drweb: can't open UNIX socket"); + return DEFER; + } + server.sun_family = AF_UNIX; + Ustrcpy(server.sun_path, drweb_options); + if (connect(sock, (struct sockaddr *) &server, sizeof(struct sockaddr_un)) < 0) { + close(sock); + log_write(0, LOG_MAIN|LOG_PANIC, + "malware acl condition: drweb: unable to connect to socket (%s). errno=%d", drweb_options, errno); + return DEFER; + } + + /* prepare variables */ + drweb_cmd = htonl(DRWEBD_SCAN_CMD); + drweb_flags = htonl(DRWEBD_RETURN_VIRUSES | DRWEBD_IS_MAIL); + snprintf(CS scanrequest, 1024,CS"%s/scan/%s/%s.eml", spool_directory, message_id, message_id); + drweb_slen = htonl(Ustrlen(scanrequest)); + + /* send scan request */ + if ((send(sock, &drweb_cmd, sizeof(drweb_cmd), 0) < 0) || + (send(sock, &drweb_flags, sizeof(drweb_flags), 0) < 0) || + (send(sock, &drweb_slen, sizeof(drweb_slen), 0) < 0) || + (send(sock, scanrequest, Ustrlen(scanrequest), 0) < 0) || + (send(sock, &drweb_fin, sizeof(drweb_fin), 0) < 0)) { + close(sock); + log_write(0, LOG_MAIN|LOG_PANIC, + "malware acl condition: drweb: unable to send commands to socket (%s)", drweb_options); + return DEFER; + } + } + + /* wait for result */ + if ((bread = recv(sock, &drweb_rc, sizeof(drweb_rc), 0) != sizeof(drweb_rc))) { + close(sock); + log_write(0, LOG_MAIN|LOG_PANIC, + "malware acl condition: drweb: unable to read return code"); + return DEFER; + } + drweb_rc = ntohl(drweb_rc); + + if ((bread = recv(sock, &drweb_vnum, sizeof(drweb_vnum), 0) != sizeof(drweb_vnum))) { + close(sock); + log_write(0, LOG_MAIN|LOG_PANIC, + "malware acl condition: drweb: unable to read the number of viruses"); + return DEFER; + } + drweb_vnum = ntohl(drweb_vnum); + + /* "virus(es) found" if virus number is > 0 */ + if (drweb_vnum) + { + int i; + uschar pre_malware_nb[256]; + + malware_name = malware_name_buffer; + + /* setup default virus name */ + Ustrcpy(malware_name_buffer,"unknown"); + + /* read and concatenate virus names into one string */ + for (i=0;i= 2) { + pcre_copy_substring(CS tmpbuf, ovector, result, 1, CS pre_malware_nb, 255); + } + /* the first name we just copy to malware_name */ + if (i==0) + Ustrcpy(CS malware_name_buffer, CS pre_malware_nb); + else { + /* concatenate each new virus name to previous */ + int slen = Ustrlen(malware_name_buffer); + if (slen < (slen+Ustrlen(pre_malware_nb))) { + Ustrcat(malware_name_buffer, "/"); + Ustrcat(malware_name_buffer, pre_malware_nb); + } + } + } + } + else { + char *drweb_s = NULL; + + if (drweb_rc & DERR_READ_ERR) drweb_s = "read error"; + if (drweb_rc & DERR_NOMEMORY) drweb_s = "no memory"; + if (drweb_rc & DERR_TIMEOUT) drweb_s = "timeout"; + if (drweb_rc & DERR_BAD_CALL) drweb_s = "wrong command"; + /* retcodes DERR_SYMLINK, DERR_NO_REGFILE, DERR_SKIPPED. + * DERR_TOO_BIG, DERR_TOO_COMPRESSED, DERR_SPAM, + * DERR_CRC_ERROR, DERR_READSOCKET, DERR_WRITE_ERR + * and others are ignored */ + if (drweb_s) { + log_write(0, LOG_MAIN|LOG_PANIC, + "malware acl condition: drweb: drweb daemon retcode 0x%x (%s)", drweb_rc, drweb_s); + close(sock); + return DEFER; + } + /* no virus found */ + malware_name = NULL; + }; + close(sock); + } + /* ----------------------------------------------------------------------- */ else if (strcmpic(scanner_name,US"aveserver") == 0) { uschar *kav_options; uschar kav_options_buffer[1024]; @@ -406,20 +409,21 @@ int malware(uschar **listptr) { uschar buf[32768]; struct sockaddr_un server; int sock; - + int result; + if ((kav_options = string_nextinlist(&av_scanner_work, &sep, kav_options_buffer, sizeof(kav_options_buffer))) == NULL) { /* no options supplied, use default options */ kav_options = kav_options_default; }; - + /* open the aveserver socket */ sock = socket(AF_UNIX, SOCK_STREAM, 0); if (sock < 0) { log_write(0, LOG_MAIN|LOG_PANIC, "malware acl condition: can't open UNIX socket."); - return DEFER; + return DEFER; } server.sun_family = AF_UNIX; Ustrcpy(server.sun_path, kav_options); @@ -429,7 +433,7 @@ int malware(uschar **listptr) { "malware acl condition: unable to connect to aveserver UNIX socket (%s). errno=%d", kav_options, errno); return DEFER; } - + /* read aveserver's greeting and see if it is ready (2xx greeting) */ recv_line(sock, buf, 32768); @@ -440,10 +444,10 @@ int malware(uschar **listptr) { "malware acl condition: aveserver is unavailable (Responded: %s).", ((buf[0] != 0) ? buf : (uschar *)"nothing") ); return DEFER; }; - + /* prepare our command */ snprintf(CS buf, 32768, "SCAN bPQRSTUW %s/scan/%s/%s.eml\r\n", spool_directory, message_id, message_id); - + /* and send it */ if (send(sock, buf, Ustrlen(buf), 0) < 0) { close(sock); @@ -451,21 +455,54 @@ int malware(uschar **listptr) { "malware acl condition: unable to write to aveserver UNIX socket (%s)", kav_options); return DEFER; } - + malware_name = NULL; + result = 0; /* read response lines, find malware name and final response */ while (recv_line(sock, buf, 32768) > 0) { debug_printf("aveserver: %s\n", buf); - if (buf[0] == '2') break; - if (Ustrncmp(buf,"322",3) == 0) { + if (buf[0] == '2') { + break; + } else if (buf[0] == '5') { + /* aveserver is having problems */ + log_write(0, LOG_MAIN|LOG_PANIC, + "malware acl condition: unable to scan file %s/scan/%s/%s.eml (Responded: %s).", + spool_directory, message_id, message_id, buf); + result = DEFER; + break; + } else if (Ustrncmp(buf,"322",3) == 0) { uschar *p = Ustrchr(&buf[4],' '); *p = '\0'; Ustrcpy(malware_name_buffer,&buf[4]); malware_name = malware_name_buffer; - }; + }; + } + + /* prepare our command */ + snprintf(CS buf, 32768, "quit\r\n"); + + /* and send it */ + if (send(sock, buf, Ustrlen(buf), 0) < 0) { + close(sock); + log_write(0, LOG_MAIN|LOG_PANIC, + "malware acl condition: unable to write to aveserver UNIX socket (%s)", kav_options); + return DEFER; } + /* read aveserver's greeting and see if it is ready (2xx greeting) */ + recv_line(sock, buf, 32768); + + if (buf[0] != '2') { + /* aveserver is having problems */ + close(sock); + log_write(0, LOG_MAIN|LOG_PANIC, + "malware acl condition: unable to quit aveserver dialogue (Responded: %s).", ((buf[0] != 0) ? buf : (uschar *)"nothing") ); + return DEFER; + }; + close(sock); + + if (result == DEFER) return DEFER; } /* "fsecure" scanner type ------------------------------------------------- */ else if (strcmpic(scanner_name,US"fsecure") == 0) { @@ -481,15 +518,15 @@ int malware(uschar **listptr) { US"CONFIGURE\tTIMEOUT\t0\n", US"CONFIGURE\tMAXARCH\t5\n", US"CONFIGURE\tMIME\t1\n" }; - + malware_name = NULL; if ((fsecure_options = string_nextinlist(&av_scanner_work, &sep, fsecure_options_buffer, - sizeof(fsecure_options_buffer))) == NULL) { + sizeof(fsecure_options_buffer))) == NULL) { /* no options supplied, use default options */ fsecure_options = fsecure_options_default; }; - + /* open the fsecure socket */ sock = socket(AF_UNIX, SOCK_STREAM, 0); if (sock < 0) { @@ -507,7 +544,7 @@ int malware(uschar **listptr) { fsecure_options, strerror(errno)); return DEFER; } - + /* pass options */ memset(av_buffer, 0, sizeof(av_buffer)); for (i=0; i != 4; i++) { @@ -517,9 +554,9 @@ int malware(uschar **listptr) { log_write(0, LOG_MAIN|LOG_PANIC, "malware acl condition: unable to write fsecure option %d to %s (%s)", i, fsecure_options, strerror(errno)); - return DEFER; + return DEFER; }; - + bread = read(sock, av_buffer, sizeof(av_buffer)); if (bread >0) av_buffer[bread]='\0'; if (bread < 0) { @@ -532,7 +569,7 @@ int malware(uschar **listptr) { /* debug_printf("read answer %d read=%d \"%s\"\n", i, bread, av_buffer ); */ /* while (Ustrstr(av_buffer, "OK\tServer configured.@") == NULL); */ }; - + /* pass the mailfile to fsecure */ snprintf(CS file_name,1024,"SCAN\t%s/scan/%s/%s.eml\n", spool_directory, message_id, message_id); /* debug_printf("send scan %s",file_name); */ @@ -543,11 +580,11 @@ int malware(uschar **listptr) { fsecure_options, strerror(errno)); return DEFER; }; - + /* set up match */ /* todo also SUSPICION\t */ fs_inf = pcre_compile("\\S{0,5}INFECTED\\t[^\\t]*\\t([^\\t]+)\\t\\S*$", PCRE_COPT, (const char **)&rerror, &roffset, NULL); - + /* read report, linewise */ do { int ovector[30]; @@ -566,7 +603,7 @@ int malware(uschar **listptr) { while ((i < sizeof(av_buffer)-1 ) && (av_buffer[i-1] != '\n')); av_buffer[i-1] = '\0'; /* debug_printf("got line \"%s\"\n",av_buffer); */ - + /* Really search for virus again? */ if (malware_name == NULL) { /* try matcher on the line, grab substring */ @@ -579,7 +616,7 @@ int malware(uschar **listptr) { }; } while (Ustrstr(av_buffer, "OK\tScan ok.") == NULL); - close(sock); + close(sock); } /* ----------------------------------------------------------------------- */ @@ -597,20 +634,20 @@ int malware(uschar **listptr) { int kav_rc; unsigned long kav_reportlen, bread; pcre *kav_re; - + if ((kav_options = string_nextinlist(&av_scanner_work, &sep, kav_options_buffer, sizeof(kav_options_buffer))) == NULL) { /* no options supplied, use default options */ kav_options = kav_options_default; }; - + /* open the kavdaemon socket */ sock = socket(AF_UNIX, SOCK_STREAM, 0); if (sock < 0) { log_write(0, LOG_MAIN|LOG_PANIC, "malware acl condition: can't open UNIX socket."); - return DEFER; + return DEFER; } server.sun_family = AF_UNIX; Ustrcpy(server.sun_path, kav_options); @@ -620,12 +657,12 @@ int malware(uschar **listptr) { "malware acl condition: unable to connect to kavdaemon UNIX socket (%s). errno=%d", kav_options, errno); return DEFER; } - + /* get current date and time, build scan request */ time(&t); strftime(CS tmpbuf, sizeof(tmpbuf), "<0>%d %b %H:%M:%S:%%s/scan/%%s", localtime(&t)); snprintf(CS scanrequest, 1024,CS tmpbuf, spool_directory, message_id); - + /* send scan request */ if (send(sock, scanrequest, Ustrlen(scanrequest)+1, 0) < 0) { close(sock); @@ -633,7 +670,7 @@ int malware(uschar **listptr) { "malware acl condition: unable to write to kavdaemon UNIX socket (%s)", kav_options); return DEFER; } - + /* wait for result */ if ((bread = recv(sock, tmpbuf, 2, 0) != 2)) { close(sock); @@ -641,7 +678,7 @@ int malware(uschar **listptr) { "malware acl condition: unable to read 2 bytes from kavdaemon socket."); return DEFER; } - + /* get errorcode from one nibble */ if (test_byte_order() == LITTLE_MY_ENDIAN) { kav_rc = tmpbuf[0] & 0x0F; @@ -649,7 +686,7 @@ int malware(uschar **listptr) { else { kav_rc = tmpbuf[1] & 0x0F; }; - + /* improper kavdaemon configuration */ if ( (kav_rc == 5) || (kav_rc == 6) ) { close(sock); @@ -657,39 +694,39 @@ int malware(uschar **listptr) { "malware acl condition: please reconfigure kavdaemon to NOT disinfect or remove infected files."); return DEFER; }; - + if (kav_rc == 1) { close(sock); log_write(0, LOG_MAIN|LOG_PANIC, "malware acl condition: kavdaemon reported 'scanning not completed' (code 1)."); return DEFER; }; - + if (kav_rc == 7) { close(sock); log_write(0, LOG_MAIN|LOG_PANIC, "malware acl condition: kavdaemon reported 'kavdaemon damaged' (code 7)."); return DEFER; }; - + /* code 8 is not handled, since it is ambigous. It appears mostly on bounces where part of a file has been cut off */ - + /* "virus found" return codes (2-4) */ if ((kav_rc > 1) && (kav_rc < 5)) { int report_flag = 0; - + /* setup default virus name */ Ustrcpy(malware_name_buffer,"unknown"); malware_name = malware_name_buffer; - + if (test_byte_order() == LITTLE_MY_ENDIAN) { report_flag = tmpbuf[1]; } else { report_flag = tmpbuf[0]; }; - + /* read the report, if available */ if( report_flag == 1 ) { /* read report size */ @@ -699,7 +736,7 @@ int malware(uschar **listptr) { "malware acl condition: cannot read report size from kavdaemon"); return DEFER; }; - + /* it's possible that avp returns av_buffer[1] == 1 but the reportsize is 0 (!?) */ if (kav_reportlen > 0) { @@ -708,18 +745,18 @@ int malware(uschar **listptr) { Ustrcpy(kav_match_string, "suspicion:\\s*(.+?)\\s*$"); else Ustrcpy(kav_match_string, "infected:\\s*(.+?)\\s*$"); - + kav_re = pcre_compile( CS kav_match_string, PCRE_COPT, (const char **)&rerror, &roffset, NULL ); - - /* read report, linewise */ + + /* read report, linewise */ while (kav_reportlen > 0) { int result = 0; int ovector[30]; - + bread = 0; while ( recv(sock, &tmpbuf[bread], 1, 0) == 1 ) { kav_reportlen--; @@ -728,7 +765,7 @@ int malware(uschar **listptr) { }; bread++; tmpbuf[bread] = '\0'; - + /* try matcher on the line, grab substring */ result = pcre_exec(kav_re, NULL, CS tmpbuf, Ustrlen(tmpbuf), 0, 0, ovector, 30); if (result >= 2) { @@ -743,12 +780,12 @@ int malware(uschar **listptr) { /* no virus found */ malware_name = NULL; }; - + close(sock); } /* ----------------------------------------------------------------------- */ - - + + /* "cmdline" scanner type ------------------------------------------------ */ else if (strcmpic(scanner_name,US"cmdline") == 0) { uschar *cmdline_scanner; @@ -769,7 +806,7 @@ int malware(uschar **listptr) { int trigger = 0; int result; int ovector[30]; - + /* find scanner command line */ if ((cmdline_scanner = string_nextinlist(&av_scanner_work, &sep, cmdline_scanner_buffer, @@ -777,9 +814,9 @@ int malware(uschar **listptr) { /* no command line supplied */ log_write(0, LOG_MAIN|LOG_PANIC, "malware acl condition: missing commandline specification for cmdline scanner type."); - return DEFER; + return DEFER; }; - + /* find scanner output trigger */ if ((cmdline_trigger = string_nextinlist(&av_scanner_work, &sep, cmdline_trigger_buffer, @@ -787,9 +824,9 @@ int malware(uschar **listptr) { /* no trigger regex supplied */ log_write(0, LOG_MAIN|LOG_PANIC, "malware acl condition: missing trigger specification for cmdline scanner type."); - return DEFER; + return DEFER; }; - + /* precompile trigger regex */ cmdline_trigger_re = pcre_compile(CS cmdline_trigger, PCRE_COPT, (const char **)&rerror, &roffset, NULL); if (cmdline_trigger_re == NULL) { @@ -797,7 +834,7 @@ int malware(uschar **listptr) { "malware acl condition: regular expression error in '%s': %s at offset %d", cmdline_trigger_re, rerror, roffset); return DEFER; }; - + /* find scanner name regex */ if ((cmdline_regex = string_nextinlist(&av_scanner_work, &sep, cmdline_regex_buffer, @@ -805,9 +842,9 @@ int malware(uschar **listptr) { /* no name regex supplied */ log_write(0, LOG_MAIN|LOG_PANIC, "malware acl condition: missing virus name regex specification for cmdline scanner type."); - return DEFER; + return DEFER; }; - + /* precompile name regex */ cmdline_regex_re = pcre_compile(CS cmdline_regex, PCRE_COPT, (const char **)&rerror, &roffset, NULL); if (cmdline_regex_re == NULL) { @@ -815,17 +852,17 @@ int malware(uschar **listptr) { "malware acl condition: regular expression error in '%s': %s at offset %d", cmdline_regex_re, rerror, roffset); return DEFER; }; - + /* prepare scanner call */ snprintf(CS file_name,1024,"%s/scan/%s", spool_directory, message_id); snprintf(CS commandline,1024, CS cmdline_scanner,file_name); /* redirect STDERR too */ Ustrcat(commandline," 2>&1"); - + /* store exims signal handlers */ eximsigchld = signal(SIGCHLD,SIG_DFL); eximsigpipe = signal(SIGPIPE,SIG_DFL); - + scanner_out = popen(CS commandline,"r"); if (scanner_out == NULL) { log_write(0, LOG_MAIN|LOG_PANIC, @@ -834,10 +871,10 @@ int malware(uschar **listptr) { signal(SIGPIPE,eximsigpipe); return DEFER; }; - + snprintf(CS file_name,1024,"%s/scan/%s/%s_scanner_output", spool_directory, message_id, message_id); scanner_record = fopen(CS file_name,"w"); - + if (scanner_record == NULL) { log_write(0, LOG_MAIN|LOG_PANIC, "malware acl condition: opening scanner output file (%s) failed: %s.", file_name, strerror(errno)); @@ -846,7 +883,7 @@ int malware(uschar **listptr) { signal(SIGPIPE,eximsigpipe); return DEFER; }; - + /* look for trigger while recording output */ while(fgets(CS linebuffer,32767,scanner_out) != NULL) { if ( Ustrlen(linebuffer) > fwrite(linebuffer, 1, Ustrlen(linebuffer), scanner_record) ) { @@ -862,17 +899,17 @@ int malware(uschar **listptr) { if (!trigger && regex_match_and_setup(cmdline_trigger_re, linebuffer, 0, -1)) trigger = 1; }; - + fclose(scanner_record); pclose(scanner_out); signal(SIGCHLD,eximsigchld); signal(SIGPIPE,eximsigpipe); - + if (trigger) { /* setup default virus name */ Ustrcpy(malware_name_buffer,"unknown"); malware_name = malware_name_buffer; - + /* re-open the scanner output file, look for name match */ scanner_record = fopen(CS file_name,"r"); while(fgets(CS linebuffer,32767,scanner_record) != NULL) { @@ -890,8 +927,8 @@ int malware(uschar **listptr) { }; } /* ----------------------------------------------------------------------- */ - - + + /* "sophie" scanner type ------------------------------------------------- */ else if (strcmpic(scanner_name,US"sophie") == 0) { uschar *sophie_options; @@ -902,20 +939,20 @@ int malware(uschar **listptr) { int sock; uschar file_name[1024]; uschar av_buffer[1024]; - + if ((sophie_options = string_nextinlist(&av_scanner_work, &sep, sophie_options_buffer, sizeof(sophie_options_buffer))) == NULL) { /* no options supplied, use default options */ sophie_options = sophie_options_default; }; - + /* open the sophie socket */ sock = socket(AF_UNIX, SOCK_STREAM, 0); if (sock < 0) { log_write(0, LOG_MAIN|LOG_PANIC, "malware acl condition: can't open UNIX socket."); - return DEFER; + return DEFER; } server.sun_family = AF_UNIX; Ustrcpy(server.sun_path, sophie_options); @@ -925,18 +962,18 @@ int malware(uschar **listptr) { "malware acl condition: unable to connect to sophie UNIX socket (%s). errno=%d", sophie_options, errno); return DEFER; } - + /* pass the scan directory to sophie */ snprintf(CS file_name,1024,"%s/scan/%s", spool_directory, message_id); if (write(sock, file_name, Ustrlen(file_name)) < 0) { close(sock); log_write(0, LOG_MAIN|LOG_PANIC, "malware acl condition: unable to write to sophie UNIX socket (%s)", sophie_options); - return DEFER; + return DEFER; }; - + write(sock, "\n", 1); - + /* wait for result */ memset(av_buffer, 0, sizeof(av_buffer)); if ((!(bread = read(sock, av_buffer, sizeof(av_buffer))) > 0)) { @@ -945,9 +982,9 @@ int malware(uschar **listptr) { "malware acl condition: unable to read from sophie UNIX socket (%s)", sophie_options); return DEFER; }; - + close(sock); - + /* infected ? */ if (av_buffer[0] == '1') { if (Ustrchr(av_buffer, '\n')) *Ustrchr(av_buffer, '\n') = '\0'; @@ -965,10 +1002,10 @@ int malware(uschar **listptr) { }; } /* ----------------------------------------------------------------------- */ - + /* "clamd" scanner type ------------------------------------------------- */ - /* This code was contributed by David Saez */ + /* This code was contributed by David Saez */ else if (strcmpic(scanner_name,US"clamd") == 0) { uschar *clamd_options; uschar clamd_options_buffer[1024]; @@ -976,7 +1013,7 @@ int malware(uschar **listptr) { uschar *p,*vname; struct sockaddr_un server; int sock,bread=0; - unsigned int port; + unsigned int port; uschar file_name[1024]; uschar av_buffer[1024]; uschar hostname[256]; @@ -1002,26 +1039,26 @@ int malware(uschar **listptr) { sizeof(clamd_options2_buffer))) == NULL) { clamd_options2 = clamd_options2_default; } - + /* socket does not start with '/' -> network socket */ if (*clamd_options != '/') { - + /* extract host and port part */ if( sscanf(CS clamd_options, "%s %u", hostname, &port) != 2 ) { log_write(0, LOG_MAIN|LOG_PANIC, "malware acl condition: clamd: invalid socket '%s'", clamd_options); return DEFER; }; - + /* Lookup the host */ if((he = gethostbyname(CS hostname)) == 0) { log_write(0, LOG_MAIN|LOG_PANIC, "malware acl condition: clamd: failed to lookup host '%s'", hostname); return DEFER; } - + in = *(struct in_addr *) he->h_addr_list[0]; - + /* Open the ClamAV Socket */ if ( (sock = ip_socket(SOCK_STREAM, AF_INET)) < 0) { log_write(0, LOG_MAIN|LOG_PANIC, @@ -1029,9 +1066,9 @@ int malware(uschar **listptr) { strerror(errno)); return DEFER; } - + if (ip_connect(sock, AF_INET, (uschar*)inet_ntoa(in), port, 5) < 0) { - close(sock); + close(sock); log_write(0, LOG_MAIN|LOG_PANIC, "malware acl condition: clamd: connection to %s, port %u failed (%s)", inet_ntoa(in), port, strerror(errno)); @@ -1041,9 +1078,9 @@ int malware(uschar **listptr) { if (strcmpic(clamd_options2,US"local") == 0) { /* Pass the string to ClamAV (7 = "SCAN \n" + \0) */ - + snprintf(CS file_name,1024,"SCAN %s/scan/%s\n", spool_directory, message_id); - + if (send(sock, file_name, Ustrlen(file_name), 0) < 0) { close(sock); log_write(0, LOG_MAIN|LOG_PANIC,"malware acl condition: clamd: unable to write to socket (%s)", @@ -1069,33 +1106,33 @@ int malware(uschar **listptr) { strerror(errno)); return DEFER; } - + if (bread == sizeof(av_buffer)) { log_write(0, LOG_MAIN|LOG_PANIC, "malware acl condition: clamd: buffer too small"); return DEFER; } - + if (!(*av_buffer2)) { log_write(0, LOG_MAIN|LOG_PANIC, "malware acl condition: clamd: ClamAV returned null"); return DEFER; } - + av_buffer2[bread] = '\0'; - if( sscanf(CS av_buffer2, "PORT %hu\n", &port) != 1 ) { + if( sscanf(CS av_buffer2, "PORT %u\n", &port) != 1 ) { log_write(0, LOG_MAIN|LOG_PANIC, "malware acl condition: clamd: Expected port information from clamd, got '%s'", av_buffer2); return DEFER; }; - + if ( (sockData = ip_socket(SOCK_STREAM, AF_INET)) < 0) { log_write(0, LOG_MAIN|LOG_PANIC, "malware acl condition: clamd: unable to acquire socket (%s)", strerror(errno)); return DEFER; } - + if (ip_connect(sockData, AF_INET, (uschar*)inet_ntoa(in), port, 5) < 0) { close(sockData); log_write(0, LOG_MAIN|LOG_PANIC, @@ -1104,57 +1141,57 @@ int malware(uschar **listptr) { return DEFER; } - snprintf(CS scanrequest, 1024,CS"%s/scan/%s/%s.eml", - spool_directory, message_id, message_id); - - /* calc file size */ - clam_fd = open(CS scanrequest, O_RDONLY); - if (clam_fd == -1) { - log_write(0, LOG_MAIN|LOG_PANIC, - "malware acl condition: clamd: can't open spool file %s: %s", - scanrequest, strerror(errno)); - return DEFER; - } - fsize = lseek(clam_fd, 0, SEEK_END); - if (fsize == -1) { - log_write(0, LOG_MAIN|LOG_PANIC, - "malware acl condition: clamd: can't seek spool file %s: %s", - scanrequest, strerror(errno)); - return DEFER; - } - lseek(clam_fd, 0, SEEK_SET); - - clamav_fbuf = (uschar *) malloc (fsize); - if (!clamav_fbuf) { - close(sockData); - close(clam_fd); - log_write(0, LOG_MAIN|LOG_PANIC, - "malware acl condition: clamd: unable to allocate memory %u for file (%s)", - fsize, scanrequest); - return DEFER; - } - - result = read (clam_fd, clamav_fbuf, fsize); - if (result == -1) { - close(sockData); - close(clam_fd); - free(clamav_fbuf); - log_write(0, LOG_MAIN|LOG_PANIC, - "malware acl condition: clamd: can't read spool file %s: %s", - scanrequest, strerror(errno)); - return DEFER; - } - close(clam_fd); - - /* send file body to socket */ - if (send(sockData, clamav_fbuf, fsize, 0) < 0) { - close(sockData); - free(clamav_fbuf); - log_write(0, LOG_MAIN|LOG_PANIC, - "malware acl condition: clamd: unable to send file body to socket (%s:%u)", hostname, port); - return DEFER; - } - free(clamav_fbuf); + snprintf(CS scanrequest, 1024,CS"%s/scan/%s/%s.eml", + spool_directory, message_id, message_id); + + /* calc file size */ + clam_fd = open(CS scanrequest, O_RDONLY); + if (clam_fd == -1) { + log_write(0, LOG_MAIN|LOG_PANIC, + "malware acl condition: clamd: can't open spool file %s: %s", + scanrequest, strerror(errno)); + return DEFER; + } + fsize = lseek(clam_fd, 0, SEEK_END); + if (fsize == -1) { + log_write(0, LOG_MAIN|LOG_PANIC, + "malware acl condition: clamd: can't seek spool file %s: %s", + scanrequest, strerror(errno)); + return DEFER; + } + lseek(clam_fd, 0, SEEK_SET); + + clamav_fbuf = (uschar *) malloc (fsize); + if (!clamav_fbuf) { + close(sockData); + close(clam_fd); + log_write(0, LOG_MAIN|LOG_PANIC, + "malware acl condition: clamd: unable to allocate memory %u for file (%s)", + fsize, scanrequest); + return DEFER; + } + + result = read (clam_fd, clamav_fbuf, fsize); + if (result == -1) { + close(sockData); + close(clam_fd); + free(clamav_fbuf); + log_write(0, LOG_MAIN|LOG_PANIC, + "malware acl condition: clamd: can't read spool file %s: %s", + scanrequest, strerror(errno)); + return DEFER; + } + close(clam_fd); + + /* send file body to socket */ + if (send(sockData, clamav_fbuf, fsize, 0) < 0) { + close(sockData); + free(clamav_fbuf); + log_write(0, LOG_MAIN|LOG_PANIC, + "malware acl condition: clamd: unable to send file body to socket (%s:%u)", hostname, port); + return DEFER; + } + free(clamav_fbuf); close(sockData); } } @@ -1166,10 +1203,10 @@ int malware(uschar **listptr) { strerror(errno)); return DEFER; } - + server.sun_family = AF_UNIX; Ustrcpy(server.sun_path, clamd_options); - + if (connect(sock, (struct sockaddr *) &server, sizeof(struct sockaddr_un)) < 0) { close(sock); log_write(0, LOG_MAIN|LOG_PANIC, @@ -1178,27 +1215,27 @@ int malware(uschar **listptr) { return DEFER; } } - + /* Pass the string to ClamAV (7 = "SCAN \n" + \0) */ - + snprintf(CS file_name,1024,"SCAN %s/scan/%s\n", spool_directory, message_id); - + if (send(sock, file_name, Ustrlen(file_name), 0) < 0) { close(sock); log_write(0, LOG_MAIN|LOG_PANIC,"malware acl condition: clamd: unable to write to socket (%s)", strerror(errno)); return DEFER; } - - /* + + /* We're done sending, close socket for writing. - + One user reported that clamd 0.70 does not like this any more ... - + */ - + /* shutdown(sock, SHUT_WR); */ - + /* Read the result */ memset(av_buffer, 0, sizeof(av_buffer)); bread = read(sock, av_buffer, sizeof(av_buffer)); @@ -1210,32 +1247,32 @@ int malware(uschar **listptr) { strerror(errno)); return DEFER; } - + if (bread == sizeof(av_buffer)) { log_write(0, LOG_MAIN|LOG_PANIC, "malware acl condition: clamd: buffer too small"); return DEFER; } - + /* Check the result. ClamAV Returns infected: -> ": FOUND" not-infected: -> ": OK" - error: -> ": ERROR */ - + error: -> ": ERROR */ + if (!(*av_buffer)) { log_write(0, LOG_MAIN|LOG_PANIC, "malware acl condition: clamd: ClamAV returned null"); return DEFER; } - + /* colon in returned output? */ if((p = Ustrrchr(av_buffer,':')) == NULL) { log_write(0, LOG_MAIN|LOG_PANIC, "malware acl condition: clamd: ClamAV returned malformed result: %s", - av_buffer); + av_buffer); return DEFER; } - + /* strip filename strip CR at the end */ ++p; while (*p == ' ') ++p; @@ -1268,8 +1305,8 @@ int malware(uschar **listptr) { } } /* ----------------------------------------------------------------------- */ - - + + /* "mksd" scanner type --------------------------------------------------- */ else if (strcmpic(scanner_name,US"mksd") == 0) { uschar *mksd_options; @@ -1279,25 +1316,25 @@ int malware(uschar **listptr) { struct sockaddr_un server; int sock; int retval; - + if ((mksd_options = string_nextinlist(&av_scanner_work, &sep, mksd_options_buffer, sizeof(mksd_options_buffer))) != NULL) { mksd_maxproc = (int) strtol(CS mksd_options, &mksd_options_end, 10); - if ((*mksd_options == '\0') || (*mksd_options_end != '\0') || - (mksd_maxproc < 1) || (mksd_maxproc > 32)) { + if ((*mksd_options == '\0') || (*mksd_options_end != '\0') || + (mksd_maxproc < 1) || (mksd_maxproc > 32)) { log_write(0, LOG_MAIN|LOG_PANIC, "malware acl condition: mksd: invalid option '%s'", mksd_options); return DEFER; } } - + /* open the mksd socket */ sock = socket(AF_UNIX, SOCK_STREAM, 0); if (sock < 0) { log_write(0, LOG_MAIN|LOG_PANIC, "malware acl condition: can't open UNIX socket."); - return DEFER; + return DEFER; } server.sun_family = AF_UNIX; Ustrcpy(server.sun_path, "/var/run/mksd/socket"); @@ -1307,11 +1344,11 @@ int malware(uschar **listptr) { "malware acl condition: unable to connect to mksd UNIX socket (/var/run/mksd/socket). errno=%d", errno); return DEFER; } - + malware_name = NULL; - + retval = mksd_scan_packed(sock); - + if (retval != OK) return retval; } @@ -1324,7 +1361,7 @@ int malware(uschar **listptr) { return DEFER; }; /* ----------------------------------------------------------------------- */ - + /* set "been here, done that" marker */ malware_ok = 1; }; @@ -1364,7 +1401,7 @@ int recv_line(int sock, uschar *buffer, int size) { int mksd_writev (int sock, struct iovec *iov, int iovcnt) { int i; - + for (;;) { do i = writev (sock, iov, iovcnt); @@ -1375,7 +1412,7 @@ int mksd_writev (int sock, struct iovec *iov, int iovcnt) "malware acl condition: unable to write to mksd UNIX socket (/var/run/mksd/socket)"); return -1; } - + for (;;) if (i >= iov->iov_len) { if (--iovcnt == 0) @@ -1394,7 +1431,7 @@ int mksd_read_lines (int sock, uschar *av_buffer, int av_buffer_size) { int offset = 0; int i; - + do { if ((i = recv (sock, av_buffer+offset, av_buffer_size-offset, 0)) <= 0) { close (sock); @@ -1402,7 +1439,7 @@ int mksd_read_lines (int sock, uschar *av_buffer, int av_buffer_size) "malware acl condition: unable to read from mksd UNIX socket (/var/run/mksd/socket)"); return -1; } - + offset += i; /* offset == av_buffer_size -> buffer full */ if (offset == av_buffer_size) { @@ -1412,7 +1449,7 @@ int mksd_read_lines (int sock, uschar *av_buffer, int av_buffer_size) return -1; } } while (av_buffer[offset-1] != '\n'); - + av_buffer[offset] = '\0'; return offset; } @@ -1420,7 +1457,7 @@ int mksd_read_lines (int sock, uschar *av_buffer, int av_buffer_size) int mksd_parse_line (char *line) { char *p; - + switch (*line) { case 'O': /* OK */ @@ -1441,7 +1478,7 @@ int mksd_parse_line (char *line) if (((p = strchr (line+4, ' ')) != NULL) && ((p-line) > 4)) { (*p) = '\0'; Ustrcpy (malware_name_buffer, line+4); - malware_name = malware_name_buffer; + malware_name = malware_name_buffer; return OK; } } @@ -1456,7 +1493,7 @@ int mksd_scan_packed (int sock) struct iovec iov[7]; char *cmd = "MSQ/scan/.eml\n"; uschar av_buffer[1024]; - + iov[0].iov_base = cmd; iov[0].iov_len = 3; iov[1].iov_base = CS spool_directory; @@ -1469,15 +1506,15 @@ int mksd_scan_packed (int sock) iov[4].iov_len = 1; iov[6].iov_base = cmd + 9; iov[6].iov_len = 5; - + if (mksd_writev (sock, iov, 7) < 0) return DEFER; - + if (mksd_read_lines (sock, av_buffer, sizeof (av_buffer)) < 0) return DEFER; - + close (sock); - + return mksd_parse_line (CS av_buffer); }