* Exim - an Internet mail transport agent *
*************************************************/
-/* Copyright (c) Tom Kistner <tom@duncanthrax.net> 2003 - 2015
+/*
+ * Copyright (c) The Exim Maintainers 2016 - 2022
+ * Copyright (c) Tom Kistner <tom@duncanthrax.net> 2003 - 2015
* License: GPL
- * Copyright (c) The Exim Maintainers 2016 - 2018
+ * SPDX-License-Identifier: GPL-2.0-or-later
*/
/* 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;
+uschar spam_action_buffer[32];
uschar spam_report_buffer[32600];
-uschar prev_user_name[128] = "";
+uschar * prev_user_name = NULL;
int spam_ok = 0;
int spam_rc = 0;
uschar *prev_spamd_address_work = NULL;
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;
+spamd->priority = SPAMD_PRIORITY;
return 0;
}
return 0; /* OK */
}
+if (Ustrcmp(param, "variant=rspamd") == 0)
+ {
+ spamd->is_rspamd = TRUE;
+ return 0;
+ }
+
if (Ustrncmp(param, "tmo=", 4) == 0)
{
int sec = readconf_readtime((s = param+4), '\0', FALSE);
{
unsigned int i;
spamd_address_container * sd;
-long rnd, weights;
+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++)
{
if (weights == 0) /* all servers failed */
return -1;
-for (rnd = random() % weights, i = 0; i < num_servers; i++)
+for (long rnd = random_number(weights), i = 0; i < num_servers; i++)
{
sd = spamds[i];
if (!sd->is_failed && sd->priority == pri)
- if ((rnd -= sd->weight) <= 0)
+ if ((rnd -= sd->weight) < 0)
return i;
}
int sep = 0;
const uschar *list = *listptr;
uschar *user_name;
-uschar user_name_buffer[128];
unsigned long mbox_size;
FILE *mbox_file;
client_conn_ctx spamd_cctx = {.sock = -1};
int override = 0;
time_t start;
size_t read, wrote;
-#ifndef NO_POLL_H
-struct pollfd pollfd;
-#else /* Patch posted by Erik ? for OS X */
-struct timeval select_tv; /* and applied by PH */
-fd_set select_fd;
-#endif
uschar *spamd_address_work;
spamd_address_container * sd;
result = 0;
/* find the username from the option list */
-if ((user_name = string_nextinlist(&list, &sep,
- user_name_buffer,
- sizeof(user_name_buffer))) == NULL)
+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) )
+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" */
override = 1;
/* expand spamd_address if needed */
-if (*spamd_address == '$')
+if (*spamd_address != '$')
+ spamd_address_work = spamd_address;
+else if (!(spamd_address_work = expand_string(spamd_address)))
{
- spamd_address_work = expand_string(spamd_address);
- if (spamd_address_work == NULL)
- {
- log_write(0, LOG_MAIN|LOG_PANIC,
- "%s spamd_address starts with $, but expansion failed: %s",
- loglabel, expand_string_message);
- return DEFER;
- }
+ log_write(0, LOG_MAIN|LOG_PANIC,
+ "%s spamd_address starts with $, but expansion failed: %s",
+ loglabel, expand_string_message);
+ return DEFER;
}
-else
- spamd_address_work = spamd_address;
DEBUG(D_acl) debug_printf_indent("spamd: addrlist '%s'\n", spamd_address_work);
uschar * s;
DEBUG(D_acl) debug_printf_indent("spamd: addr entry '%s'\n", address);
- sd = (spamd_address_container *)store_get(sizeof(spamd_address_container));
+ sd = store_get(sizeof(spamd_address_container), GET_UNTAINTED);
for (sublist = address, args = 0, spamd_param_init(sd);
(s = string_nextinlist(&sublist, &sublist_sep, NULL, 0));
for (;;)
{
/*XXX could potentially use TFO early-data here */
- if ( (spamd_cctx.sock = ip_streamsocket(sd->hostspec, &errstr, 5)) >= 0
+ if ( (spamd_cctx.sock = ip_streamsocket(sd->hostspec, &errstr, 5, NULL)) >= 0
|| sd->retry <= 0
)
break;
}
(void)fcntl(spamd_cctx.sock, F_SETFL, O_NONBLOCK);
-/* now we are connected to spamd on spamd_sock */
-
-(void)string_format(spamd_buffer,
- sizeof(spamd_buffer),
- "REPORT SPAMC/1.2\r\nUser: %s\r\nContent-length: %ld\r\n\r\n",
- user_name,
- mbox_size);
-/* send our request */
-wrote = send(spamd_cctx.sock, spamd_buffer, Ustrlen(spamd_buffer), 0);
+/* now we are connected to spamd on spamd_cctx.sock */
+if (sd->is_rspamd)
+ {
+ gstring * req_str;
+ const uschar * s;
+
+ req_str = string_append(NULL, 8,
+ "CHECK RSPAMC/1.3\r\nContent-length: ", string_sprintf("%lu\r\n", mbox_size),
+ "Queue-Id: ", message_id,
+ "\r\nFrom: <", sender_address,
+ ">\r\nRecipient-Number: ", string_sprintf("%d\r\n", recipients_count));
+
+ for (int i = 0; i < recipients_count; i++)
+ req_str = string_append(req_str, 3,
+ "Rcpt: <", recipients_list[i].address, ">\r\n");
+ if ((s = expand_string(US"$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 */
+ int n;
+ uschar * s = string_sprintf(
+ "REPORT SPAMC/1.2\r\nUser: %s\r\nContent-length: %ld\r\n\r\n%n",
+ user_name, mbox_size, &n);
+ /* send our request */
+ wrote = send(spamd_cctx.sock, s, n, 0);
+ }
if (wrote == -1)
{
}
/* 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).
+/* 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). Workaround using select() removed 2021/11 (jgh).
*/
-#ifndef NO_POLL_H
-pollfd.fd = spamd_cctx.sock;
-pollfd.events = POLLOUT;
+#ifdef NO_POLL_H
+# error Need poll(2) support
#endif
+
+(void)fcntl(spamd_cctx.sock, F_SETFL, O_NONBLOCK);
do
{
read = fread(spamd_buffer,1,sizeof(spamd_buffer),mbox_file);
{
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 */
-
+ result = poll_one_fd(spamd_cctx.sock, POLLOUT, 1000);
if (result == -1 && errno == EINTR)
goto again;
else if (result < 1)
(void)fclose(mbox_file);
/* we're done sending, close socket for writing */
-shutdown(spamd_cctx.sock, SHUT_WR);
+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));
while ((i = ip_recv(&spamd_cctx,
spamd_buffer + offset,
sizeof(spamd_buffer) - offset - 1,
- sd->timeout - time(NULL) + start)) > 0)
+ sd->timeout + start)) > 0)
offset += i;
spamd_buffer[offset] = '\0'; /* guard byte */
/* 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];
+
+ 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';
+ }
+ }
+else
{ /* spamassassin */
/* dig in the spamd output and put the report in a multiline header,
if requested */
}
}
- spam_action_buffer = spamd_score >= spamd_threshold ? US"reject" : US"no action";
+ Ustrcpy(spam_action_buffer,
+ spamd_score >= spamd_threshold ? US"reject" : US"no action");
}
/* Create report. Since this is a multiline string,
prev_spamd_address_work = string_copy(spamd_address_work);
/* remember user name and "been here" for it */
-Ustrcpy(prev_user_name, user_name);
+prev_user_name = user_name;
spam_ok = 1;
return override
git://git.exim.org / exim.git / blobdiff