-/* $Cambridge: exim/src/src/spam.c,v 1.6 2005/05/10 22:39:20 tom Exp $ */
-
/*************************************************
* Exim - an Internet mail transport agent *
*************************************************/
-/* Copyright (c) Tom Kistner <tom@duncanthrax.net> 2003-???? */
-/* License: GPL */
+/* Copyright (c) Tom Kistner <tom@duncanthrax.net> 2003 - 2015
+ * License: GPL
+ * Copyright (c) The Exim Maintainers 2016 - 2020
+ */
/* Code for calling spamassassin's spamd. Called from acl.c. */
uschar spam_score_buffer[16];
uschar spam_score_int_buffer[16];
uschar spam_bar_buffer[128];
+uschar spam_action_buffer[32];
uschar spam_report_buffer[32600];
uschar prev_user_name[128] = "";
int spam_ok = 0;
int spam_rc = 0;
+uschar *prev_spamd_address_work = NULL;
+
+static const uschar * loglabel = US"spam acl condition:";
+
+
+static int
+spamd_param_init(spamd_address_container *spamd)
+{
+/* default spamd server weight, time and priority value */
+spamd->is_rspamd = FALSE;
+spamd->is_failed = FALSE;
+spamd->weight = SPAMD_WEIGHT;
+spamd->timeout = SPAMD_TIMEOUT;
+spamd->retry = 0;
+spamd->priority = 1;
+return 0;
+}
-int spam(uschar **listptr) {
- int sep = 0;
- uschar *list = *listptr;
- uschar *user_name;
- uschar user_name_buffer[128];
- unsigned long mbox_size;
- FILE *mbox_file;
- int spamd_sock;
- uschar spamd_buffer[32600];
- int i, j, offset, result;
- uschar spamd_version[8];
- uschar spamd_score_char;
- double spamd_threshold, spamd_score;
- int spamd_report_offset;
- uschar *p,*q;
- int override = 0;
- time_t start;
- size_t read, wrote;
- struct sockaddr_un server;
-#ifndef NO_POLL_H
- struct pollfd pollfd;
-#endif
- /* find the username from the option list */
- if ((user_name = string_nextinlist(&list, &sep,
- user_name_buffer,
- sizeof(user_name_buffer))) == NULL) {
- /* no username given, this means no scanning should be done */
- return FAIL;
- };
-
- /* if username is "0" or "false", do not scan */
- if ( (Ustrcmp(user_name,"0") == 0) ||
- (strcmpic(user_name,US"false") == 0) ) {
- return FAIL;
- };
-
- /* if there is an additional option, check if it is "true" */
- if (strcmpic(list,US"true") == 0) {
- /* in that case, always return true later */
- override = 1;
- };
-
- /* if we scanned for this username last time, just return */
- if ( spam_ok && ( Ustrcmp(prev_user_name, user_name) == 0 ) ) {
- if (override)
- return OK;
- else
- return spam_rc;
- };
-
- /* 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,
- "spam acl condition: error while creating mbox spool file");
- return DEFER;
- };
+static int
+spamd_param(const uschar * param, spamd_address_container * spamd)
+{
+static int timesinceday = -1;
+const uschar * s;
+const uschar * name;
- start = time(NULL);
- /* socket does not start with '/' -> network socket */
- if (*spamd_address != '/') {
- time_t now = time(NULL);
- int num_servers = 0;
- int current_server = 0;
- int start_server = 0;
- uschar *address = NULL;
- uschar *spamd_address_list_ptr = spamd_address;
- uschar address_buffer[256];
- spamd_address_container * spamd_address_vector[32];
-
- /* Check how many spamd servers we have
- and register their addresses */
- while ((address = string_nextinlist(&spamd_address_list_ptr, &sep,
- address_buffer,
- sizeof(address_buffer))) != NULL) {
-
- spamd_address_container *this_spamd =
- (spamd_address_container *)store_get(sizeof(spamd_address_container));
-
- /* grok spamd address and port */
- if( sscanf(CS address, "%s %u", this_spamd->tcp_addr, &(this_spamd->tcp_port)) != 2 ) {
- log_write(0, LOG_MAIN,
- "spam acl condition: warning - invalid spamd address: '%s'", address);
- continue;
- };
-
- spamd_address_vector[num_servers] = this_spamd;
- num_servers++;
- if (num_servers > 31)
- break;
- };
-
- /* check if we have at least one server */
- if (!num_servers) {
- log_write(0, LOG_MAIN|LOG_PANIC,
- "spam acl condition: no useable spamd server addresses in spamd_address configuration option.");
- fclose(mbox_file);
- return DEFER;
- };
-
- current_server = start_server = (int)now % num_servers;
-
- while (1) {
-
- debug_printf("trying server %s, port %u\n",
- spamd_address_vector[current_server]->tcp_addr,
- spamd_address_vector[current_server]->tcp_port);
-
- /* contact a spamd */
- if ( (spamd_sock = ip_socket(SOCK_STREAM, AF_INET)) < 0) {
- log_write(0, LOG_MAIN|LOG_PANIC,
- "spam acl condition: error creating IP socket for spamd");
- fclose(mbox_file);
- return DEFER;
- };
-
- if (ip_connect( spamd_sock,
- AF_INET,
- spamd_address_vector[current_server]->tcp_addr,
- spamd_address_vector[current_server]->tcp_port,
- 5 ) > -1) {
- /* connection OK */
- break;
- };
+/*XXX more clever parsing could discard embedded spaces? */
- log_write(0, LOG_MAIN|LOG_PANIC,
- "spam acl condition: warning - spamd connection to %s, port %u failed: %s",
- spamd_address_vector[current_server]->tcp_addr,
- spamd_address_vector[current_server]->tcp_port,
- strerror(errno));
- current_server++;
- if (current_server >= num_servers)
- current_server = 0;
- if (current_server == start_server) {
- log_write(0, LOG_MAIN|LOG_PANIC, "spam acl condition: all spamd servers failed");
- fclose(mbox_file);
- close(spamd_sock);
- return DEFER;
- };
- };
+if (sscanf(CCS param, "pri=%u", &spamd->priority))
+ return 0; /* OK */
+if (sscanf(CCS param, "weight=%u", &spamd->weight))
+ {
+ if (spamd->weight == 0) /* this server disabled: skip it */
+ return 1;
+ return 0; /* OK */
}
- else {
- /* open the local socket */
- if ((spamd_sock = socket(AF_UNIX, SOCK_STREAM, 0)) < 0) {
- log_write(0, LOG_MAIN|LOG_PANIC,
- "malware acl condition: spamd: unable to acquire socket (%s)",
- strerror(errno));
- fclose(mbox_file);
- return DEFER;
+if (Ustrncmp(param, "time=", 5) == 0)
+ {
+ unsigned int start_h = 0, start_m = 0, start_s = 0;
+ unsigned int end_h = 24, end_m = 0, end_s = 0;
+ unsigned int time_start, time_end;
+ const uschar * end_string;
+
+ name = US"time";
+ s = param+5;
+ if ((end_string = Ustrchr(s, '-')))
+ {
+ end_string++;
+ if ( sscanf(CS end_string, "%u.%u.%u", &end_h, &end_m, &end_s) == 0
+ || sscanf(CS s, "%u.%u.%u", &start_h, &start_m, &start_s) == 0
+ )
+ goto badval;
}
+ else
+ goto badval;
- server.sun_family = AF_UNIX;
- Ustrcpy(server.sun_path, spamd_address);
-
- if (connect(spamd_sock, (struct sockaddr *) &server, sizeof(struct sockaddr_un)) < 0) {
- log_write(0, LOG_MAIN|LOG_PANIC,
- "malware acl condition: spamd: unable to connect to UNIX socket %s (%s)",
- spamd_address, strerror(errno) );
- fclose(mbox_file);
- close(spamd_sock);
- return DEFER;
+ if (timesinceday < 0)
+ {
+ time_t now = time(NULL);
+ struct tm *tmp = localtime(&now);
+ timesinceday = tmp->tm_hour*3600 + tmp->tm_min*60 + tmp->tm_sec;
}
+ time_start = start_h*3600 + start_m*60 + start_s;
+ time_end = end_h*3600 + end_m*60 + end_s;
+
+ if (timesinceday < time_start || timesinceday >= time_end)
+ return 1; /* skip spamd server */
+
+ return 0; /* OK */
}
- /* now we are connected to spamd on spamd_sock */
- snprintf(CS spamd_buffer,
- sizeof(spamd_buffer),
- "REPORT SPAMC/1.2\r\nUser: %s\r\nContent-length: %ld\r\n\r\n",
- user_name,
- mbox_size);
+if (Ustrcmp(param, "variant=rspamd") == 0)
+ {
+ spamd->is_rspamd = TRUE;
+ return 0;
+ }
- /* send our request */
- if (send(spamd_sock, spamd_buffer, Ustrlen(spamd_buffer), 0) < 0) {
- close(spamd_sock);
- log_write(0, LOG_MAIN|LOG_PANIC,
- "spam acl condition: spamd send failed: %s", strerror(errno));
- fclose(mbox_file);
- close(spamd_sock);
- return DEFER;
- };
-
- /* now send the file */
- /* spamd sometimes accepts conections but doesn't read data off
- * the connection. We make the file descriptor non-blocking so
- * that the write will only write sufficient data without blocking
- * and we poll the desciptor to make sure that we can write without
- * blocking. Short writes are gracefully handled and if the whole
- * trasaction takes too long it is aborted.
- * Note: poll() is not supported in OSX 10.2.
- */
+if (Ustrncmp(param, "tmo=", 4) == 0)
+ {
+ int sec = readconf_readtime((s = param+4), '\0', FALSE);
+ name = US"timeout";
+ if (sec < 0)
+ goto badval;
+ spamd->timeout = sec;
+ return 0;
+ }
+
+if (Ustrncmp(param, "retry=", 6) == 0)
+ {
+ int sec = readconf_readtime((s = param+6), '\0', FALSE);
+ name = US"retry";
+ if (sec < 0)
+ goto badval;
+ spamd->retry = sec;
+ return 0;
+ }
+
+log_write(0, LOG_MAIN, "%s warning - invalid spamd parameter: '%s'",
+ loglabel, param);
+return -1; /* syntax error */
+
+badval:
+ log_write(0, LOG_MAIN,
+ "%s warning - invalid spamd %s value: '%s'", loglabel, name, s);
+ return -1; /* syntax error */
+}
+
+
+static int
+spamd_get_server(spamd_address_container ** spamds, int num_servers)
+{
+unsigned int i;
+spamd_address_container * sd;
+long weights;
+unsigned pri;
+static BOOL srandomed = FALSE;
+
+/* speedup, if we have only 1 server */
+if (num_servers == 1)
+ return (spamds[0]->is_failed ? -1 : 0);
+
+/* init ranmod */
+if (!srandomed)
+ {
+ struct timeval tv;
+ gettimeofday(&tv, NULL);
+ srandom((unsigned int)(tv.tv_usec/1000));
+ srandomed = TRUE;
+ }
+
+/* scan for highest pri */
+for (pri = 0, i = 0; i < num_servers; i++)
+ {
+ sd = spamds[i];
+ if (!sd->is_failed && sd->priority > pri) pri = sd->priority;
+ }
+
+/* get sum of weights */
+for (weights = 0, i = 0; i < num_servers; i++)
+ {
+ sd = spamds[i];
+ if (!sd->is_failed && sd->priority == pri) weights += sd->weight;
+ }
+if (weights == 0) /* all servers failed */
+ return -1;
+
+for (long rnd = random() % weights, i = 0; i < num_servers; i++)
+ {
+ sd = spamds[i];
+ if (!sd->is_failed && sd->priority == pri)
+ if ((rnd -= sd->weight) <= 0)
+ return i;
+ }
+
+log_write(0, LOG_MAIN|LOG_PANIC,
+ "%s unknown error (memory/cpu corruption?)", loglabel);
+return -1;
+}
+
+
+int
+spam(const uschar **listptr)
+{
+int sep = 0;
+const uschar *list = *listptr;
+uschar *user_name;
+unsigned long mbox_size;
+FILE *mbox_file;
+client_conn_ctx spamd_cctx = {.sock = -1};
+uschar spamd_buffer[32600];
+int i, j, offset, result;
+uschar spamd_version[8];
+uschar spamd_short_result[8];
+uschar spamd_score_char;
+double spamd_threshold, spamd_score, spamd_reject_score;
+int spamd_report_offset;
+uschar *p,*q;
+int override = 0;
+time_t start;
+size_t read, wrote;
#ifndef NO_POLL_H
- pollfd.fd = spamd_sock;
- pollfd.events = POLLOUT;
+struct pollfd pollfd;
+#else /* Patch posted by Erik ? for OS X */
+struct timeval select_tv; /* and applied by PH */
+fd_set select_fd;
#endif
- fcntl(spamd_sock, F_SETFL, O_NONBLOCK);
- do {
- read = fread(spamd_buffer,1,sizeof(spamd_buffer),mbox_file);
- if (read > 0) {
- offset = 0;
-again:
-#ifndef NO_POLL_H
- result = poll(&pollfd, 1, 1000);
- if (result == -1 && errno == EINTR)
- continue;
- else if (result < 1) {
- if (result == -1)
- log_write(0, LOG_MAIN|LOG_PANIC,
- "spam acl condition: %s on spamd socket", strerror(errno));
- else {
- if (time(NULL) - start < SPAMD_TIMEOUT)
- goto again;
- log_write(0, LOG_MAIN|LOG_PANIC,
- "spam acl condition: timed out writing spamd socket");
- }
- close(spamd_sock);
- fclose(mbox_file);
- return DEFER;
+uschar *spamd_address_work;
+spamd_address_container * sd;
+
+/* stop compiler warning */
+result = 0;
+
+/* find the username from the option list */
+if (!(user_name = string_nextinlist(&list, &sep, NULL, 0)))
+ {
+ /* no username given, this means no scanning should be done */
+ return FAIL;
+ }
+
+/* if username is "0" or "false", do not scan */
+if (Ustrcmp(user_name, "0") == 0 || strcmpic(user_name, US"false") == 0)
+ return FAIL;
+
+/* if there is an additional option, check if it is "true" */
+if (strcmpic(list,US"true") == 0)
+ /* in that case, always return true later */
+ override = 1;
+
+/* expand spamd_address if needed */
+if (*spamd_address != '$')
+ spamd_address_work = spamd_address;
+else if (!(spamd_address_work = expand_string(spamd_address)))
+ {
+ log_write(0, LOG_MAIN|LOG_PANIC,
+ "%s spamd_address starts with $, but expansion failed: %s",
+ loglabel, expand_string_message);
+ return DEFER;
+ }
+
+DEBUG(D_acl) debug_printf_indent("spamd: addrlist '%s'\n", spamd_address_work);
+
+/* check if previous spamd_address was expanded and has changed. dump cached results if so */
+if ( spam_ok
+ && prev_spamd_address_work != NULL
+ && Ustrcmp(prev_spamd_address_work, spamd_address_work) != 0
+ )
+ spam_ok = 0;
+
+/* if we scanned for this username last time, just return */
+if (spam_ok && Ustrcmp(prev_user_name, user_name) == 0)
+ return override ? OK : spam_rc;
+
+/* make sure the eml mbox file is spooled up */
+
+if (!(mbox_file = spool_mbox(&mbox_size, NULL, NULL)))
+ { /* error while spooling */
+ log_write(0, LOG_MAIN|LOG_PANIC,
+ "%s error while creating mbox spool file", loglabel);
+ return DEFER;
+ }
+
+start = time(NULL);
+
+ {
+ int num_servers = 0;
+ int current_server;
+ uschar * address;
+ const uschar * spamd_address_list_ptr = spamd_address_work;
+ spamd_address_container * spamd_address_vector[32];
+
+ /* Check how many spamd servers we have
+ and register their addresses */
+ sep = 0; /* default colon-sep */
+ while ((address = string_nextinlist(&spamd_address_list_ptr, &sep, NULL, 0)))
+ {
+ const uschar * sublist;
+ int sublist_sep = -(int)' '; /* default space-sep */
+ unsigned args;
+ uschar * s;
+
+ DEBUG(D_acl) debug_printf_indent("spamd: addr entry '%s'\n", address);
+ sd = store_get(sizeof(spamd_address_container), FALSE);
+
+ for (sublist = address, args = 0, spamd_param_init(sd);
+ (s = string_nextinlist(&sublist, &sublist_sep, NULL, 0));
+ args++
+ )
+ {
+ DEBUG(D_acl) debug_printf_indent("spamd: addr parm '%s'\n", s);
+ switch (args)
+ {
+ case 0: sd->hostspec = s;
+ if (*s == '/') args++; /* local; no port */
+ break;
+ case 1: sd->hostspec = string_sprintf("%s %s", sd->hostspec, s);
+ break;
+ default: spamd_param(s, sd);
+ break;
+ }
}
-#endif
- wrote = send(spamd_sock,spamd_buffer + offset,read - offset,0);
- if (offset + wrote != read) {
- offset += wrote;
- goto again;
+ if (args < 2)
+ {
+ log_write(0, LOG_MAIN,
+ "%s warning - invalid spamd address: '%s'", loglabel, address);
+ continue;
}
+
+ spamd_address_vector[num_servers] = sd;
+ if (++num_servers > 31)
+ break;
}
- }
- while (!feof(mbox_file) && !ferror(mbox_file));
- if (ferror(mbox_file)) {
+
+ /* check if we have at least one server */
+ if (!num_servers)
+ {
log_write(0, LOG_MAIN|LOG_PANIC,
- "spam acl condition: error reading spool file: %s", strerror(errno));
- close(spamd_sock);
- fclose(mbox_file);
- return DEFER;
- }
+ "%s no useable spamd server addresses in spamd_address configuration option.",
+ loglabel);
+ goto defer;
+ }
- fclose(mbox_file);
+ current_server = spamd_get_server(spamd_address_vector, num_servers);
+ sd = spamd_address_vector[current_server];
+ for(;;)
+ {
+ uschar * errstr;
+
+ DEBUG(D_acl) debug_printf_indent("spamd: trying server %s\n", sd->hostspec);
+
+ for (;;)
+ {
+ /*XXX could potentially use TFO early-data here */
+ if ( (spamd_cctx.sock = ip_streamsocket(sd->hostspec, &errstr, 5, NULL)) >= 0
+ || sd->retry <= 0
+ )
+ break;
+ DEBUG(D_acl) debug_printf_indent("spamd: server %s: retry conn\n", sd->hostspec);
+ while (sd->retry > 0) sd->retry = sleep(sd->retry);
+ }
+ if (spamd_cctx.sock >= 0)
+ break;
- /* we're done sending, close socket for writing */
- shutdown(spamd_sock,SHUT_WR);
+ log_write(0, LOG_MAIN, "%s spamd: %s", loglabel, errstr);
+ sd->is_failed = TRUE;
- /* read spamd response using what's left of the timeout.
- */
- memset(spamd_buffer, 0, sizeof(spamd_buffer));
- offset = 0;
- while((i = ip_recv(spamd_sock,
- spamd_buffer + offset,
- sizeof(spamd_buffer) - offset - 1,
- SPAMD_TIMEOUT - time(NULL) + start)) > 0 ) {
- offset += i;
+ current_server = spamd_get_server(spamd_address_vector, num_servers);
+ if (current_server < 0)
+ {
+ log_write(0, LOG_MAIN|LOG_PANIC, "%s all spamd servers failed", loglabel);
+ goto defer;
+ }
+ sd = spamd_address_vector[current_server];
+ }
}
- /* error handling */
- if((i <= 0) && (errno != 0)) {
- log_write(0, LOG_MAIN|LOG_PANIC,
- "spam acl condition: error reading from spamd socket: %s", strerror(errno));
- close(spamd_sock);
- return DEFER;
+(void)fcntl(spamd_cctx.sock, F_SETFL, O_NONBLOCK);
+/* now we are connected to spamd on spamd_cctx.sock */
+if (sd->is_rspamd)
+ {
+ gstring * req_str;
+ const uschar * s;
+
+ req_str = string_append(NULL, 8,
+ "CHECK RSPAMC/1.3\r\nContent-length: ", string_sprintf("%lu\r\n", mbox_size),
+ "Queue-Id: ", message_id,
+ "\r\nFrom: <", sender_address,
+ ">\r\nRecipient-Number: ", string_sprintf("%d\r\n", recipients_count));
+
+ for (int i = 0; i < recipients_count; i++)
+ req_str = string_append(req_str, 3,
+ "Rcpt: <", recipients_list[i].address, ">\r\n");
+ if ((s = expand_string(US"$sender_helo_name")) && *s)
+ req_str = string_append(req_str, 3, "Helo: ", s, "\r\n");
+ if ((s = expand_string(US"$sender_host_name")) && *s)
+ req_str = string_append(req_str, 3, "Hostname: ", s, "\r\n");
+ if (sender_host_address)
+ req_str = string_append(req_str, 3, "IP: ", sender_host_address, "\r\n");
+ if ((s = expand_string(US"$authenticated_id")) && *s)
+ req_str = string_append(req_str, 3, "User: ", s, "\r\n");
+ req_str = string_catn(req_str, US"\r\n", 2);
+ wrote = send(spamd_cctx.sock, req_str->s, req_str->ptr, 0);
+ }
+else
+ { /* spamassassin variant */
+ (void)string_format(spamd_buffer,
+ sizeof(spamd_buffer),
+ "REPORT SPAMC/1.2\r\nUser: %s\r\nContent-length: %ld\r\n\r\n",
+ user_name,
+ mbox_size);
+ /* send our request */
+ wrote = send(spamd_cctx.sock, spamd_buffer, Ustrlen(spamd_buffer), 0);
}
- /* reading done */
- close(spamd_sock);
+if (wrote == -1)
+ {
+ (void)close(spamd_cctx.sock);
+ log_write(0, LOG_MAIN|LOG_PANIC,
+ "%s spamd %s send failed: %s", loglabel, callout_address, strerror(errno));
+ goto defer;
+ }
- /* dig in the spamd output and put the report in a multiline header, if requested */
- if( sscanf(CS spamd_buffer,"SPAMD/%s 0 EX_OK\r\nContent-length: %*u\r\n\r\n%lf/%lf\r\n%n",
- spamd_version,&spamd_score,&spamd_threshold,&spamd_report_offset) != 3 ) {
+/* now send the file */
+/* spamd sometimes accepts connections but doesn't read data off
+ * the connection. We make the file descriptor non-blocking so
+ * that the write will only write sufficient data without blocking
+ * and we poll the descriptor to make sure that we can write without
+ * blocking. Short writes are gracefully handled and if the whole
+ * transaction takes too long it is aborted.
+ * Note: poll() is not supported in OSX 10.2 and is reported to be
+ * broken in more recent versions (up to 10.4).
+ */
+#ifndef NO_POLL_H
+pollfd.fd = spamd_cctx.sock;
+pollfd.events = POLLOUT;
+#endif
+(void)fcntl(spamd_cctx.sock, F_SETFL, O_NONBLOCK);
+do
+ {
+ read = fread(spamd_buffer,1,sizeof(spamd_buffer),mbox_file);
+ if (read > 0)
+ {
+ offset = 0;
+again:
+#ifndef NO_POLL_H
+ result = poll(&pollfd, 1, 1000);
+
+/* Patch posted by Erik ? for OS X and applied by PH */
+#else
+ select_tv.tv_sec = 1;
+ select_tv.tv_usec = 0;
+ FD_ZERO(&select_fd);
+ FD_SET(spamd_cctx.sock, &select_fd);
+ result = select(spamd_cctx.sock+1, NULL, &select_fd, NULL, &select_tv);
+#endif
+/* End Erik's patch */
+
+ if (result == -1 && errno == EINTR)
+ goto again;
+ else if (result < 1)
+ {
+ if (result == -1)
+ log_write(0, LOG_MAIN|LOG_PANIC,
+ "%s %s on spamd %s socket", loglabel, callout_address, strerror(errno));
+ else
+ {
+ if (time(NULL) - start < sd->timeout)
+ goto again;
+ log_write(0, LOG_MAIN|LOG_PANIC,
+ "%s timed out writing spamd %s, socket", loglabel, callout_address);
+ }
+ (void)close(spamd_cctx.sock);
+ goto defer;
+ }
- /* try to fall back to pre-2.50 spamd output */
- if( sscanf(CS spamd_buffer,"SPAMD/%s 0 EX_OK\r\nSpam: %*s ; %lf / %lf\r\n\r\n%n",
- spamd_version,&spamd_score,&spamd_threshold,&spamd_report_offset) != 3 ) {
+ wrote = send(spamd_cctx.sock,spamd_buffer + offset,read - offset,0);
+ if (wrote == -1)
+ {
log_write(0, LOG_MAIN|LOG_PANIC,
- "spam acl condition: cannot parse spamd output");
- return DEFER;
- };
- };
+ "%s %s on spamd %s socket", loglabel, callout_address, strerror(errno));
+ (void)close(spamd_cctx.sock);
+ goto defer;
+ }
+ if (offset + wrote != read)
+ {
+ offset += wrote;
+ goto again;
+ }
+ }
+ }
+while (!feof(mbox_file) && !ferror(mbox_file));
+
+if (ferror(mbox_file))
+ {
+ log_write(0, LOG_MAIN|LOG_PANIC,
+ "%s error reading spool file: %s", loglabel, strerror(errno));
+ (void)close(spamd_cctx.sock);
+ goto defer;
+ }
+
+(void)fclose(mbox_file);
+
+/* we're done sending, close socket for writing */
+if (!sd->is_rspamd)
+ shutdown(spamd_cctx.sock,SHUT_WR);
+
+/* read spamd response using what's left of the timeout. */
+memset(spamd_buffer, 0, sizeof(spamd_buffer));
+offset = 0;
+while ((i = ip_recv(&spamd_cctx,
+ spamd_buffer + offset,
+ sizeof(spamd_buffer) - offset - 1,
+ sd->timeout + start)) > 0)
+ offset += i;
+spamd_buffer[offset] = '\0'; /* guard byte */
+
+/* error handling */
+if (i <= 0 && errno != 0)
+ {
+ log_write(0, LOG_MAIN|LOG_PANIC,
+ "%s error reading from spamd %s, socket: %s", loglabel, callout_address, strerror(errno));
+ (void)close(spamd_cctx.sock);
+ return DEFER;
+ }
- /* Create report. Since this is a multiline string,
- we must hack it into shape first */
+/* reading done */
+(void)close(spamd_cctx.sock);
+
+if (sd->is_rspamd)
+ { /* rspamd variant of reply */
+ int r;
+ if ( (r = sscanf(CS spamd_buffer,
+ "RSPAMD/%7s 0 EX_OK\r\nMetric: default; %7s %lf / %lf / %lf\r\n%n",
+ spamd_version, spamd_short_result, &spamd_score, &spamd_threshold,
+ &spamd_reject_score, &spamd_report_offset)) != 5
+ || spamd_report_offset >= offset /* verify within buffer */
+ )
+ {
+ log_write(0, LOG_MAIN|LOG_PANIC,
+ "%s cannot parse spamd %s, output: %d", loglabel, callout_address, r);
+ return DEFER;
+ }
+ /* now parse action */
p = &spamd_buffer[spamd_report_offset];
- q = spam_report_buffer;
- while (*p != '\0') {
- /* skip \r */
- if (*p == '\r') {
- p++;
- continue;
- };
- *q = *p;
- q++;
- if (*p == '\n') {
- *q = '\t';
- q++;
- /* eat whitespace */
- while( (*p <= ' ') && (*p != '\0') ) {
- p++;
- };
- p--;
- };
- p++;
- };
- /* NULL-terminate */
- *q = '\0';
- q--;
- /* cut off trailing leftovers */
- while (*q <= ' ') {
+
+ if (Ustrncmp(p, "Action: ", sizeof("Action: ") - 1) == 0)
+ {
+ p += sizeof("Action: ") - 1;
+ q = &spam_action_buffer[0];
+ while (*p && *p != '\r' && (q - spam_action_buffer) < sizeof(spam_action_buffer) - 1)
+ *q++ = *p++;
*q = '\0';
- q--;
- };
- spam_report = spam_report_buffer;
-
- /* create spam bar */
- spamd_score_char = spamd_score > 0 ? '+' : '-';
- j = abs((int)(spamd_score));
- i = 0;
- if( j != 0 ) {
- while((i < j) && (i <= MAX_SPAM_BAR_CHARS))
- spam_bar_buffer[i++] = spamd_score_char;
+ }
}
- else{
- spam_bar_buffer[0] = '/';
- i = 1;
+else
+ { /* spamassassin */
+ /* dig in the spamd output and put the report in a multiline header,
+ if requested */
+ if (sscanf(CS spamd_buffer,
+ "SPAMD/%7s 0 EX_OK\r\nContent-length: %*u\r\n\r\n%lf/%lf\r\n%n",
+ spamd_version,&spamd_score,&spamd_threshold,&spamd_report_offset) != 3)
+ {
+ /* try to fall back to pre-2.50 spamd output */
+ if (sscanf(CS spamd_buffer,
+ "SPAMD/%7s 0 EX_OK\r\nSpam: %*s ; %lf / %lf\r\n\r\n%n",
+ spamd_version,&spamd_score,&spamd_threshold,&spamd_report_offset) != 3)
+ {
+ log_write(0, LOG_MAIN|LOG_PANIC,
+ "%s cannot parse spamd %s output", loglabel, callout_address);
+ return DEFER;
+ }
+ }
+
+ Ustrcpy(spam_action_buffer,
+ spamd_score >= spamd_threshold ? US"reject" : US"no action");
}
- spam_bar_buffer[i] = '\0';
- spam_bar = spam_bar_buffer;
-
- /* create "float" spam score */
- snprintf(CS spam_score_buffer, sizeof(spam_score_buffer),"%.1f", spamd_score);
- spam_score = spam_score_buffer;
-
- /* create "int" spam score */
- j = (int)((spamd_score + 0.001)*10);
- snprintf(CS spam_score_int_buffer, sizeof(spam_score_int_buffer), "%d", j);
- spam_score_int = spam_score_int_buffer;
-
- /* compare threshold against score */
- if (spamd_score >= spamd_threshold) {
- /* spam as determined by user's threshold */
- spam_rc = OK;
+
+/* Create report. Since this is a multiline string,
+we must hack it into shape first */
+p = &spamd_buffer[spamd_report_offset];
+q = spam_report_buffer;
+while (*p != '\0')
+ {
+ /* skip \r */
+ if (*p == '\r')
+ {
+ p++;
+ continue;
+ }
+ *q++ = *p;
+ if (*p++ == '\n')
+ {
+ /* add an extra space after the newline to ensure
+ that it is treated as a header continuation line */
+ *q++ = ' ';
+ }
}
- else {
- /* not spam */
- spam_rc = FAIL;
- };
-
- /* remember user name and "been here" for it */
- Ustrcpy(prev_user_name, user_name);
- spam_ok = 1;
-
- if (override) {
- /* always return OK, no matter what the score */
- return OK;
+/* NULL-terminate */
+*q-- = '\0';
+/* cut off trailing leftovers */
+while (*q <= ' ')
+ *q-- = '\0';
+
+spam_report = spam_report_buffer;
+spam_action = spam_action_buffer;
+
+/* create spam bar */
+spamd_score_char = spamd_score > 0 ? '+' : '-';
+j = abs((int)(spamd_score));
+i = 0;
+if (j != 0)
+ while ((i < j) && (i <= MAX_SPAM_BAR_CHARS))
+ spam_bar_buffer[i++] = spamd_score_char;
+else
+ {
+ spam_bar_buffer[0] = '/';
+ i = 1;
}
- else {
- return spam_rc;
- };
+spam_bar_buffer[i] = '\0';
+spam_bar = spam_bar_buffer;
+
+/* create "float" spam score */
+(void)string_format(spam_score_buffer, sizeof(spam_score_buffer),
+ "%.1f", spamd_score);
+spam_score = spam_score_buffer;
+
+/* create "int" spam score */
+j = (int)((spamd_score + 0.001)*10);
+(void)string_format(spam_score_int_buffer, sizeof(spam_score_int_buffer),
+ "%d", j);
+spam_score_int = spam_score_int_buffer;
+
+/* compare threshold against score */
+spam_rc = spamd_score >= spamd_threshold
+ ? OK /* spam as determined by user's threshold */
+ : FAIL; /* not spam */
+
+/* remember expanded spamd_address if needed */
+if (spamd_address_work != spamd_address)
+ prev_spamd_address_work = string_copy(spamd_address_work);
+
+/* remember user name and "been here" for it */
+Ustrcpy(prev_user_name, user_name);
+spam_ok = 1;
+
+return override
+ ? OK /* always return OK, no matter what the score */
+ : spam_rc;
+
+defer:
+ (void)fclose(mbox_file);
+ return DEFER;
}
#endif
+/* vi: aw ai sw=2
+*/
git://git.exim.org / users / heiko / exim.git / blobdiff