* 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 - 2018
+ */
/* Code for calling spamassassin's spamd. Called from acl.c. */
static int
spamd_param_init(spamd_address_container *spamd)
{
-/* default spamd server weight, time and backup value */
+/* default spamd server weight, time and priority value */
+spamd->is_rspamd = FALSE;
spamd->is_failed = FALSE;
-spamd->is_backup = FALSE;
spamd->weight = SPAMD_WEIGHT;
spamd->timeout = SPAMD_TIMEOUT;
spamd->retry = 0;
+spamd->priority = 1;
return 0;
}
static int
-spamd_param(const uschar *param, spamd_address_container *spamd)
+spamd_param(const uschar * param, spamd_address_container * spamd)
{
static int timesinceday = -1;
const uschar * s;
const uschar * name;
-/* check backup parameter */
-if (Ustrcmp(param, "backup") == 0)
- {
- spamd->is_backup = TRUE;
- return 0; /* OK */
- }
-
/*XXX more clever parsing could discard embedded spaces? */
-/* check weight parameter */
-if (sscanf(param, "weight=%u", &spamd->weight))
+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 */
}
-/* check time parameter */
if (Ustrncmp(param, "time=", 5) == 0)
{
unsigned int start_h = 0, start_m = 0, start_s = 0;
static int
-spamd_get_server(spamd_address_container **spamds, int num_servers)
+spamd_get_server(spamd_address_container ** spamds, int num_servers)
{
unsigned int i;
-long rnd, weights = 0;
-static BOOL srandomed = 0;
-BOOL usebackup = FALSE;
-
-for (;;)
- {
- /* seedup, if we have only 1 server */
- if (num_servers == 1)
- return (spamds[0]->is_failed ? -1 : 0);
+spamd_address_container * sd;
+long weights;
+unsigned pri;
+static BOOL srandomed = FALSE;
- /* init ranmod */
- if (!srandomed)
- {
- struct timeval tv;
- gettimeofday(&tv, NULL);
- srandom((unsigned int)(tv.tv_usec/1000));
- srandomed = TRUE;
- }
+/* speedup, if we have only 1 server */
+if (num_servers == 1)
+ return (spamds[0]->is_failed ? -1 : 0);
- /* get sum of all weights */
- for (i = 0; i < num_servers; i++)
- if (!spamds[i]->is_failed && spamds[i]->is_backup == usebackup)
- weights += spamds[i]->weight;
+/* init ranmod */
+if (!srandomed)
+ {
+ struct timeval tv;
+ gettimeofday(&tv, NULL);
+ srandom((unsigned int)(tv.tv_usec/1000));
+ srandomed = TRUE;
+ }
- if (weights != 0)
- break;
- if (usebackup) /* all servers failed (backups too) */
- return -1;
- usebackup = 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;
}
-rnd = random() % weights;
+/* 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 (i = 0; i < num_servers; i++)
- if (!spamds[i]->is_failed && spamds[i]->is_backup == usebackup)
- if ((rnd -= spamds[i]->weight) < 0)
+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);
uschar user_name_buffer[128];
unsigned long mbox_size;
FILE *mbox_file;
-int spamd_sock = -1;
+client_conn_ctx spamd_cctx = {.sock = -1};
uschar spamd_buffer[32600];
int i, j, offset, result;
uschar spamd_version[8];
int override = 0;
time_t start;
size_t read, wrote;
-struct sockaddr_un server;
#ifndef NO_POLL_H
struct pollfd pollfd;
#else /* Patch posted by Erik ? for OS X */
else
spamd_address_work = spamd_address;
-HDEBUG(D_acl) debug_printf("spamd: addrlist '%s'\n", spamd_address_work);
+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
return override ? OK : spam_rc;
/* make sure the eml mbox file is spooled up */
-mbox_file = spool_mbox(&mbox_size, NULL);
-if (mbox_file == NULL)
- {
- /* error while spooling */
+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;
{
int num_servers = 0;
int current_server;
- uschar *address;
- const uschar *spamd_address_list_ptr = spamd_address_work;
+ 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 */
- while ((address = string_nextinlist(&spamd_address_list_ptr, &sep,
- NULL, 0)) != NULL)
+ 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;
- HDEBUG(D_acl) debug_printf("spamd: addr entry '%s'\n", address);
- sd = (spamd_address_container *)store_get(sizeof(spamd_address_container));
+ 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);
+ (s = string_nextinlist(&sublist, &sublist_sep, NULL, 0));
args++
)
{
- HDEBUG(D_acl) debug_printf("spamd: addr parm '%s'\n", s);
+ DEBUG(D_acl) debug_printf_indent("spamd: addr parm '%s'\n", s);
switch (args)
{
case 0: sd->hostspec = s;
{
uschar * errstr;
- debug_printf("trying server %s\n", sd->hostspec);
+ DEBUG(D_acl) debug_printf_indent("spamd: trying server %s\n", sd->hostspec);
for (;;)
{
- if ( (spamd_sock = ip_streamsocket(sd->hostspec, &errstr, 5)) >= 0
+ /*XXX could potentially use TFO early-data here */
+ if ( (spamd_cctx.sock = ip_streamsocket(sd->hostspec, &errstr, 5)) >= 0
|| sd->retry <= 0
)
break;
- debug_printf("server %s: retry conn\n", sd->hostspec);
+ 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_sock >= 0)
+ if (spamd_cctx.sock >= 0)
break;
log_write(0, LOG_MAIN, "%s spamd: %s", loglabel, errstr);
}
}
-if (spamd_sock == -1)
- {
- log_write(0, LOG_MAIN|LOG_PANIC,
- "programming fault, spamd_sock unexpectedly unset");
- goto defer;
- }
-
-(void)fcntl(spamd_sock, F_SETFL, O_NONBLOCK);
-/* now we are connected to spamd on spamd_sock */
+(void)fcntl(spamd_cctx.sock, F_SETFL, O_NONBLOCK);
+/* now we are connected to spamd on spamd_cctx.sock */
if (sd->is_rspamd)
- { /* rspamd variant */
- uschar *req_str;
- const uschar * helo;
- const uschar * fcrdns;
- const uschar * authid;
-
- req_str = string_sprintf("CHECK RSPAMC/1.3\r\nContent-length: %lu\r\n"
- "Queue-Id: %s\r\nFrom: <%s>\r\nRecipient-Number: %d\r\n", mbox_size,
- message_id, sender_address, recipients_count);
- for (i = 0; i < recipients_count; i ++)
- req_str = string_sprintf("%sRcpt: <%s>\r\n", req_str, recipients_list[i].address);
- if ((helo = expand_string(US"$sender_helo_name")) != NULL && *helo != '\0')
- req_str = string_sprintf("%sHelo: %s\r\n", req_str, helo);
- if ((fcrdns = expand_string(US"$sender_host_name")) != NULL && *fcrdns != '\0')
- req_str = string_sprintf("%sHostname: %s\r\n", req_str, fcrdns);
- if (sender_host_address != NULL)
- req_str = string_sprintf("%sIP: %s\r\n", req_str, sender_host_address);
- if ((authid = expand_string(US"$authenticated_id")) != NULL && *authid != '\0')
- req_str = string_sprintf("%sUser: %s\r\n", req_str, authid);
- req_str = string_sprintf("%s\r\n", req_str);
- wrote = send(spamd_sock, req_str, Ustrlen(req_str), 0);
+ {
+ gstring * req_str;
+ const uschar * s;
+
+ req_str = string_append(NULL, 8,
+ "CHECK RSPAMC/1.3\r\nContent-length: ", string_sprintf("%lu\r\n", mbox_size),
+ "Queue-Id: ", message_id,
+ "\r\nFrom: <", sender_address,
+ ">\r\nRecipient-Number: ", string_sprintf("%d\r\n", recipients_count));
+
+ for (int i = 0; i < recipients_count; i++)
+ req_str = string_append(req_str, 3,
+ "Rcpt: <", recipients_list[i].address, ">\r\n");
+ if ((s = expand_string(US"$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 */
user_name,
mbox_size);
/* send our request */
- wrote = send(spamd_sock, spamd_buffer, Ustrlen(spamd_buffer), 0);
+ wrote = send(spamd_cctx.sock, spamd_buffer, Ustrlen(spamd_buffer), 0);
}
if (wrote == -1)
{
- (void)close(spamd_sock);
+ (void)close(spamd_cctx.sock);
log_write(0, LOG_MAIN|LOG_PANIC,
- "%s spamd send failed: %s", loglabel, strerror(errno));
+ "%s spamd %s send failed: %s", loglabel, callout_address, strerror(errno));
goto defer;
}
/* now send the file */
-/* spamd sometimes accepts conections but doesn't read data off
+/* 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 desciptor to make sure that we can write without
+ * and we poll the descriptor 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.
+ * 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_sock;
+pollfd.fd = spamd_cctx.sock;
pollfd.events = POLLOUT;
#endif
-(void)fcntl(spamd_sock, F_SETFL, O_NONBLOCK);
+(void)fcntl(spamd_cctx.sock, F_SETFL, O_NONBLOCK);
do
{
read = fread(spamd_buffer,1,sizeof(spamd_buffer),mbox_file);
select_tv.tv_sec = 1;
select_tv.tv_usec = 0;
FD_ZERO(&select_fd);
- FD_SET(spamd_sock, &select_fd);
- result = select(spamd_sock+1, NULL, &select_fd, NULL, &select_tv);
+ 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)
log_write(0, LOG_MAIN|LOG_PANIC,
- "%s %s on spamd socket", loglabel, strerror(errno));
+ "%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 socket", loglabel);
+ "%s timed out writing spamd %s, socket", loglabel, callout_address);
}
- (void)close(spamd_sock);
+ (void)close(spamd_cctx.sock);
goto defer;
}
- wrote = send(spamd_sock,spamd_buffer + offset,read - offset,0);
+ wrote = send(spamd_cctx.sock,spamd_buffer + offset,read - offset,0);
if (wrote == -1)
{
log_write(0, LOG_MAIN|LOG_PANIC,
- "%s %s on spamd socket", loglabel, strerror(errno));
- (void)close(spamd_sock);
+ "%s %s on spamd %s socket", loglabel, callout_address, strerror(errno));
+ (void)close(spamd_cctx.sock);
goto defer;
}
if (offset + wrote != read)
{
log_write(0, LOG_MAIN|LOG_PANIC,
"%s error reading spool file: %s", loglabel, strerror(errno));
- (void)close(spamd_sock);
+ (void)close(spamd_cctx.sock);
goto defer;
}
(void)fclose(mbox_file);
/* we're done sending, close socket for writing */
-shutdown(spamd_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));
offset = 0;
-while ((i = ip_recv(spamd_sock,
+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 */
/* error handling */
if (i <= 0 && errno != 0)
{
log_write(0, LOG_MAIN|LOG_PANIC,
- "%s error reading from spamd socket: %s", loglabel, strerror(errno));
- (void)close(spamd_sock);
+ "%s error reading from spamd %s, socket: %s", loglabel, callout_address, strerror(errno));
+ (void)close(spamd_cctx.sock);
return DEFER;
}
/* reading done */
-(void)close(spamd_sock);
+(void)close(spamd_cctx.sock);
if (sd->is_rspamd)
{ /* rspamd variant of reply */
int r;
- if ((r = sscanf(CS spamd_buffer,
+ 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_reject_score, &spamd_report_offset)) != 5
+ || spamd_report_offset >= offset /* verify within buffer */
+ )
{
log_write(0, LOG_MAIN|LOG_PANIC,
- "%s cannot parse spamd output: %d", loglabel, r);
+ "%s cannot parse spamd %s, output: %d", loglabel, callout_address, r);
return DEFER;
}
/* now parse action */
spamd_version,&spamd_score,&spamd_threshold,&spamd_report_offset) != 3)
{
log_write(0, LOG_MAIN|LOG_PANIC,
- "%s cannot parse spamd output", loglabel);
+ "%s cannot parse spamd %s output", loglabel, callout_address);
return DEFER;
}
}
Ustrcpy(spam_action_buffer,
- spamd_score >= spamd_threshold ? "reject" : "no action");
+ spamd_score >= spamd_threshold ? US"reject" : US"no action");
}
/* Create report. Since this is a multiline string,
git://git.exim.org / users / jgh / exim.git / blobdiff