* Exim - an Internet mail transport agent *
*************************************************/
-/* Copyright (c) University of Cambridge 1995 - 2017 */
+/* Copyright (c) University of Cambridge 1995 - 2018 */
+/* Copyright (c) The Exim Maintainers 2020 */
/* See the file NOTICE for conditions of use and distribution. */
/* Code for receiving a message and setting up spool files. */
#include "exim.h"
+#include <setjmp.h>
#ifdef EXPERIMENTAL_DCC
extern int dcc_ok;
#endif
-#ifdef EXPERIMENTAL_DMARC
+#ifdef SUPPORT_DMARC
# include "dmarc.h"
-#endif /* EXPERIMENTAL_DMARC */
+#endif
/*************************************************
* Local static variables *
*************************************************/
-static FILE *data_file = NULL;
static int data_fd = -1;
static uschar *spool_name = US"";
enum CH_STATE {LF_SEEN, MID_LINE, CR_SEEN};
+#ifdef HAVE_LOCAL_SCAN
+jmp_buf local_scan_env; /* error-handling context for local_scan */
+unsigned had_local_scan_crash;
+unsigned had_local_scan_timeout;
+#endif
+
/*************************************************
* Non-SMTP character reading functions *
int
stdin_getc(unsigned lim)
{
-return getc(stdin);
+int c = getc(stdin);
+
+if (had_data_timeout)
+ {
+ fprintf(stderr, "exim: timed out while reading - message abandoned\n");
+ log_write(L_lost_incoming_connection,
+ LOG_MAIN, "timed out while reading local message");
+ receive_bomb_out(US"data-timeout", NULL); /* Does not return */
+ }
+if (had_data_sigint)
+ {
+ if (filter_test == FTEST_NONE)
+ {
+ fprintf(stderr, "\nexim: %s received - message abandoned\n",
+ had_data_sigint == SIGTERM ? "SIGTERM" : "SIGINT");
+ log_write(0, LOG_MAIN, "%s received while reading local message",
+ had_data_sigint == SIGTERM ? "SIGTERM" : "SIGINT");
+ }
+ receive_bomb_out(US"signal-exit", NULL); /* Does not return */
+ }
+return c;
}
int
receive_check_set_sender(uschar *newsender)
{
uschar *qnewsender;
-if (trusted_caller) return TRUE;
+if (f.trusted_caller) return TRUE;
if (!newsender || !untrusted_set_sender) return FALSE;
qnewsender = Ustrchr(newsender, '@')
? newsender : string_sprintf("%s@%s", newsender, qualify_domain_sender);
All values are -1 if the STATFS functions are not available.
*/
-int
+int_eximarith_t
receive_statvfs(BOOL isspool, int *inodeptr)
{
#ifdef HAVE_STATFS
log_write(0, LOG_MAIN|LOG_PANIC, "cannot accept message: failed to stat "
"%s directory %s: %s", name, path, strerror(errno));
smtp_closedown(US"spool or log directory problem");
- exim_exit(EXIT_FAILURE, NULL);
+ exim_exit(EXIT_FAILURE);
}
*inodeptr = (statbuf.F_FILES > 0)? statbuf.F_FAVAIL : -1;
/* Disks are getting huge. Take care with computing the size in kilobytes. */
-return (int)(((double)statbuf.F_BAVAIL * (double)statbuf.F_FRSIZE)/1024.0);
+return (int_eximarith_t)(((double)statbuf.F_BAVAIL * (double)statbuf.F_FRSIZE)/1024.0);
#else
/* Unable to find partition sizes in this environment. */
BOOL
receive_check_fs(int msg_size)
{
-int space, inodes;
+int_eximarith_t space;
+int inodes;
if (check_spool_space > 0 || msg_size > 0 || check_spool_inodes > 0)
{
space = receive_statvfs(TRUE, &inodes);
DEBUG(D_receive)
- debug_printf("spool directory space = %dK inodes = %d "
- "check_space = %dK inodes = %d msg_size = %d\n",
+ debug_printf("spool directory space = " PR_EXIM_ARITH "K inodes = %d "
+ "check_space = " PR_EXIM_ARITH "K inodes = %d msg_size = %d\n",
space, inodes, check_spool_space, check_spool_inodes, msg_size);
- if ((space >= 0 && space < check_spool_space) ||
- (inodes >= 0 && inodes < check_spool_inodes))
+ if ( space >= 0 && space + msg_size / 1024 < check_spool_space
+ || inodes >= 0 && inodes < check_spool_inodes)
{
- log_write(0, LOG_MAIN, "spool directory space check failed: space=%d "
- "inodes=%d", space, inodes);
+ log_write(0, LOG_MAIN, "spool directory space check failed: space="
+ PR_EXIM_ARITH " inodes=%d", space, inodes);
return FALSE;
}
}
space = receive_statvfs(FALSE, &inodes);
DEBUG(D_receive)
- debug_printf("log directory space = %dK inodes = %d "
- "check_space = %dK inodes = %d\n",
+ debug_printf("log directory space = " PR_EXIM_ARITH "K inodes = %d "
+ "check_space = " PR_EXIM_ARITH "K inodes = %d\n",
space, inodes, check_log_space, check_log_inodes);
- if ((space >= 0 && space < check_log_space) ||
- (inodes >= 0 && inodes < check_log_inodes))
+ if ( space >= 0 && space < check_log_space
+ || inodes >= 0 && inodes < check_log_inodes)
{
- log_write(0, LOG_MAIN, "log directory space check failed: space=%d "
- "inodes=%d", space, inodes);
+ log_write(0, LOG_MAIN, "log directory space check failed: space=" PR_EXIM_ARITH
+ " inodes=%d", space, inodes);
return FALSE;
}
}
/* Now close the file if it is open, either as a fd or a stream. */
-if (data_file != NULL)
+if (spool_data_file)
+ {
+ (void)fclose(spool_data_file);
+ spool_data_file = NULL;
+ }
+else if (data_fd >= 0)
{
- (void)fclose(data_file);
- data_file = NULL;
-} else if (data_fd >= 0) {
(void)close(data_fd);
data_fd = -1;
}
/* Exit from the program (non-BSMTP cases) */
-exim_exit(EXIT_FAILURE, NULL);
+exim_exit(EXIT_FAILURE);
}
static void
data_timeout_handler(int sig)
{
-uschar *msg = NULL;
-
-sig = sig; /* Keep picky compilers happy */
-
-if (smtp_input)
- {
- msg = US"SMTP incoming data timeout";
- log_write(L_lost_incoming_connection,
- LOG_MAIN, "SMTP data timeout (message abandoned) on connection "
- "from %s F=<%s>",
- (sender_fullhost != NULL)? sender_fullhost : US"local process",
- sender_address);
- }
-else
- {
- fprintf(stderr, "exim: timed out while reading - message abandoned\n");
- log_write(L_lost_incoming_connection,
- LOG_MAIN, "timed out while reading local message");
- }
-
-receive_bomb_out(US"data-timeout", msg); /* Does not return */
+had_data_timeout = sig;
}
+#ifdef HAVE_LOCAL_SCAN
/*************************************************
* local_scan() timeout *
*************************************************/
/* Handler function for timeouts that occur while running a local_scan()
-function.
+function. Posix recommends against calling longjmp() from a signal-handler,
+but the GCC manual says you can so we will, and trust that it's better than
+calling probably non-signal-safe funxtions during logging from within the
+handler, even with other compilers.
+
+See also https://cwe.mitre.org/data/definitions/745.html which also lists
+it as unsafe.
+
+This is all because we have no control over what might be written for a
+local-scan function, so cannot sprinkle had-signal checks after each
+call-site. At least with the default "do-nothing" function we won't
+ever get here.
Argument: the signal number
Returns: nothing
static void
local_scan_timeout_handler(int sig)
{
-sig = sig; /* Keep picky compilers happy */
-log_write(0, LOG_MAIN|LOG_REJECT, "local_scan() function timed out - "
- "message temporarily rejected (size %d)", message_size);
-/* Does not return */
-receive_bomb_out(US"local-scan-timeout", US"local verification problem");
+had_local_scan_timeout = sig;
+siglongjmp(local_scan_env, 1);
}
static void
local_scan_crash_handler(int sig)
{
-log_write(0, LOG_MAIN|LOG_REJECT, "local_scan() function crashed with "
- "signal %d - message temporarily rejected (size %d)", sig, message_size);
-/* Does not return */
-receive_bomb_out(US"local-scan-error", US"local verification problem");
+had_local_scan_crash = sig;
+siglongjmp(local_scan_env, 1);
}
+#endif /*HAVE_LOCAL_SCAN*/
+
/*************************************************
* SIGTERM or SIGINT received *
static void
data_sigterm_sigint_handler(int sig)
{
-uschar *msg = NULL;
-
-if (smtp_input)
- {
- msg = US"Service not available - SIGTERM or SIGINT received";
- log_write(0, LOG_MAIN, "%s closed after %s", smtp_get_connection_info(),
- (sig == SIGTERM)? "SIGTERM" : "SIGINT");
- }
-else
- {
- if (filter_test == FTEST_NONE)
- {
- fprintf(stderr, "\nexim: %s received - message abandoned\n",
- (sig == SIGTERM)? "SIGTERM" : "SIGINT");
- log_write(0, LOG_MAIN, "%s received while reading local message",
- (sig == SIGTERM)? "SIGTERM" : "SIGINT");
- }
- }
-
-receive_bomb_out(US"signal-exit", msg); /* Does not return */
+had_data_sigint = sig;
}
{
recipient_item *oldlist = recipients_list;
int oldmax = recipients_list_max;
- recipients_list_max = recipients_list_max? 2*recipients_list_max : 50;
- recipients_list = store_get(recipients_list_max * sizeof(recipient_item));
+ recipients_list_max = recipients_list_max ? 2*recipients_list_max : 50;
+ recipients_list = store_get(recipients_list_max * sizeof(recipient_item), FALSE);
if (oldlist != NULL)
memcpy(recipients_list, oldlist, oldmax * sizeof(recipient_item));
}
BOOL
receive_remove_recipient(uschar *recipient)
{
-int count;
DEBUG(D_receive) debug_printf("receive_remove_recipient(\"%s\") called\n",
recipient);
-for (count = 0; count < recipients_count; count++)
- {
+for (int count = 0; count < recipients_count; count++)
if (Ustrcmp(recipients_list[count].address, recipient) == 0)
{
if ((--recipients_count - count) > 0)
(recipients_count - count)*sizeof(recipient_item));
return TRUE;
}
- }
return FALSE;
}
+/* Pause for a while waiting for input. If none received in that time,
+close the logfile, if we had one open; then if we wait for a long-running
+datasource (months, in one use-case) log rotation will not leave us holding
+the file copy. */
+
+static void
+log_close_chk(void)
+{
+if (!receive_timeout)
+ {
+ struct timeval t;
+ timesince(&t, &received_time);
+ if (t.tv_sec > 30*60)
+ mainlog_close();
+ else
+ {
+ fd_set r;
+ FD_ZERO(&r); FD_SET(0, &r);
+ t.tv_sec = 30*60 - t.tv_sec; t.tv_usec = 0;
+ if (select(1, &r, NULL, NULL, &t) == 0) mainlog_close();
+ }
+ }
+}
+
/*************************************************
* Read data portion of a non-SMTP message *
*************************************************/
/* Handle the case when only EOF terminates the message */
-if (!dot_ends)
+if (!f.dot_ends)
{
- register int last_ch = '\n';
+ int last_ch = '\n';
+
+/*XXX we do a gettimeofday before checking for every received char,
+which is hardly clever. The function-indirection doesn't help, but
+an additional function to check for nonempty read buffer would help.
+See stdin_getc() / smtp_getc() / tls_getc() / bdat_getc(). */
- for (; (ch = (receive_getc)(GETC_BUFFER_UNLIMITED)) != EOF; last_ch = ch)
+ for ( ;
+ log_close_chk(), (ch = (receive_getc)(GETC_BUFFER_UNLIMITED)) != EOF;
+ last_ch = ch)
{
if (ch == 0) body_zerocount++;
if (last_ch == '\r' && ch != '\n')
ch_state = 1;
-while ((ch = (receive_getc)(GETC_BUFFER_UNLIMITED)) != EOF)
+while (log_close_chk(), (ch = (receive_getc)(GETC_BUFFER_UNLIMITED)) != EOF)
{
if (ch == 0) body_zerocount++;
switch (ch_state)
/* Remember that this message uses wireformat. */
-DEBUG(D_receive) debug_printf("CHUNKING: writing spoolfile in wire format\n");
-spool_file_wireformat = TRUE;
+DEBUG(D_receive) debug_printf("CHUNKING: %s\n",
+ fout ? "writing spoolfile in wire format" : "flushing input");
+f.spool_file_wireformat = TRUE;
for (;;)
{
unsigned len = MAX(chunking_data_left, thismessage_size_limit - message_size + 1);
uschar * buf = bdat_getbuf(&len);
+ if (!buf) return END_EOF;
message_size += len;
if (fout && fwrite(buf, len, 1, fout) != 1) return END_WERROR;
}
void
receive_swallow_smtp(void)
{
-/*XXX CHUNKING: not enough. read chunks until RSET? */
if (message_ended >= END_NOTENDED)
- message_ended = read_message_data_smtp(NULL);
+ message_ended = chunking_state <= CHUNKING_OFFERED
+ ? read_message_data_smtp(NULL)
+ : read_message_bdat_smtp_wire(NULL);
}
else
fprintf(stderr, "exim: %s%s\n", text2, text1); /* Sic */
(void)fclose(f);
-exim_exit(error_rc, US"");
+exim_exit(error_rc);
}
static void
add_acl_headers(int where, uschar *acl_name)
{
-header_line *h, *next;
header_line *last_received = NULL;
switch(where)
case ACL_WHERE_DKIM:
case ACL_WHERE_MIME:
case ACL_WHERE_DATA:
- if ( cutthrough.fd >= 0 && cutthrough.delivery
+ if ( cutthrough.cctx.sock >= 0 && cutthrough.delivery
&& (acl_removed_headers || acl_added_headers))
{
log_write(0, LOG_MAIN|LOG_PANIC, "Header modification in data ACLs"
{
DEBUG(D_receive|D_acl) debug_printf_indent(">>Headers removed by %s ACL:\n", acl_name);
- for (h = header_list; h; h = h->next) if (h->type != htype_old)
+ for (header_line * h = header_list; h; h = h->next) if (h->type != htype_old)
{
const uschar * list = acl_removed_headers;
int sep = ':'; /* This is specified as a colon-separated list */
if (!acl_added_headers) return;
DEBUG(D_receive|D_acl) debug_printf_indent(">>Headers added by %s ACL:\n", acl_name);
-for (h = acl_added_headers; h; h = next)
+for (header_line * h = acl_added_headers, * next; h; h = next)
{
next = h->next;
switch(h->type)
{
case htype_add_top:
- h->next = header_list;
- header_list = h;
- DEBUG(D_receive|D_acl) debug_printf_indent(" (at top)");
- break;
+ h->next = header_list;
+ header_list = h;
+ DEBUG(D_receive|D_acl) debug_printf_indent(" (at top)");
+ break;
case htype_add_rec:
- if (last_received == NULL)
- {
- last_received = header_list;
- while (!header_testname(last_received, US"Received", 8, FALSE))
- last_received = last_received->next;
- while (last_received->next != NULL &&
- header_testname(last_received->next, US"Received", 8, FALSE))
- last_received = last_received->next;
- }
- h->next = last_received->next;
- last_received->next = h;
- DEBUG(D_receive|D_acl) debug_printf_indent(" (after Received:)");
- break;
+ if (!last_received)
+ {
+ last_received = header_list;
+ while (!header_testname(last_received, US"Received", 8, FALSE))
+ last_received = last_received->next;
+ while (last_received->next &&
+ header_testname(last_received->next, US"Received", 8, FALSE))
+ last_received = last_received->next;
+ }
+ h->next = last_received->next;
+ last_received->next = h;
+ DEBUG(D_receive|D_acl) debug_printf_indent(" (after Received:)");
+ break;
case htype_add_rfc:
- /* add header before any header which is NOT Received: or Resent- */
- last_received = header_list;
- while ( (last_received->next != NULL) &&
- ( (header_testname(last_received->next, US"Received", 8, FALSE)) ||
- (header_testname_incomplete(last_received->next, US"Resent-", 7, FALSE)) ) )
- last_received = last_received->next;
- /* last_received now points to the last Received: or Resent-* header
- in an uninterrupted chain of those header types (seen from the beginning
- of all headers. Our current header must follow it. */
- h->next = last_received->next;
- last_received->next = h;
- DEBUG(D_receive|D_acl) debug_printf_indent(" (before any non-Received: or Resent-*: header)");
- break;
+ /* add header before any header which is NOT Received: or Resent- */
+ last_received = header_list;
+ while ( last_received->next &&
+ ( (header_testname(last_received->next, US"Received", 8, FALSE)) ||
+ (header_testname_incomplete(last_received->next, US"Resent-", 7, FALSE)) ) )
+ last_received = last_received->next;
+ /* last_received now points to the last Received: or Resent-* header
+ in an uninterrupted chain of those header types (seen from the beginning
+ of all headers. Our current header must follow it. */
+ h->next = last_received->next;
+ last_received->next = h;
+ DEBUG(D_receive|D_acl) debug_printf_indent(" (before any non-Received: or Resent-*: header)");
+ break;
default:
- h->next = NULL;
- header_last->next = h;
- break;
+ h->next = NULL;
+ header_last->next = h;
+ DEBUG(D_receive|D_acl) debug_printf_indent(" ");
+ break;
}
- if (h->next == NULL) header_last = h;
+ if (!h->next) header_last = h;
/* Check for one of the known header types (From:, To:, etc.) though in
practice most added headers are going to be "other". Lower case
h->type = header_checkname(h, FALSE);
if (h->type >= 'a') h->type = htype_other;
- DEBUG(D_receive|D_acl) debug_printf_indent(" %s", header_last->text);
+ DEBUG(D_receive|D_acl) debug_printf("%s", h->text);
}
acl_added_headers = NULL;
if (LOGGING(dnssec) && sender_host_dnssec) /*XXX sender_helo_dnssec? */
g = string_catn(g, US" DS", 3);
g = string_append(g, 2, US" H=", sender_fullhost);
- if (LOGGING(incoming_interface) && interface_address != NULL)
- {
- g = string_cat(g,
- string_sprintf(" I=[%s]:%d", interface_address, interface_port));
- }
+ if (LOGGING(incoming_interface) && interface_address)
+ g = string_fmt_append(g, " I=[%s]:%d", interface_address, interface_port);
}
-if (tcp_in_fastopen && !tcp_in_fastopen_logged)
+if (f.tcp_in_fastopen && !f.tcp_in_fastopen_logged)
{
- g = string_catn(g, US" TFO", 4);
- tcp_in_fastopen_logged = TRUE;
+ g = string_catn(g, US" TFO*", f.tcp_in_fastopen_data ? 5 : 4);
+ f.tcp_in_fastopen_logged = TRUE;
}
if (sender_ident)
g = string_append(g, 2, US" U=", sender_ident);
if (received_protocol)
g = string_append(g, 2, US" P=", received_protocol);
+if (LOGGING(pipelining) && f.smtp_in_pipelining_advertised)
+ {
+ g = string_catn(g, US" L", 2);
+#ifndef DISABLE_PIPE_CONNECT
+ if (f.smtp_in_early_pipe_used)
+ g = string_catn(g, US"*", 1);
+ else if (f.smtp_in_early_pipe_advertised)
+ g = string_catn(g, US".", 1);
+#endif
+ if (!f.smtp_in_pipelining_used)
+ g = string_catn(g, US"-", 1);
+ }
return g;
}
uschar **blackholed_by_ptr)
{
FILE *mbox_file;
-uschar rfc822_file_path[2048];
+uschar * rfc822_file_path = NULL;
unsigned long mbox_size;
-header_line *my_headerlist;
uschar *user_msg, *log_msg;
int mime_part_count_buffer = -1;
uschar * mbox_filename;
int rc = OK;
-memset(CS rfc822_file_path,0,2048);
-
/* check if it is a MIME message */
-for (my_headerlist = header_list; my_headerlist; my_headerlist = my_headerlist->next)
+for (header_line * my_headerlist = header_list; my_headerlist;
+ my_headerlist = my_headerlist->next)
if ( my_headerlist->type != '*' /* skip deleted headers */
&& strncmpic(my_headerlist->text, US"Content-Type:", 13) == 0
)
rc = mime_acl_check(acl, mbox_file, NULL, &user_msg, &log_msg);
(void)fclose(mbox_file);
-if (Ustrlen(rfc822_file_path) > 0)
+if (rfc822_file_path)
{
mime_part_count = mime_part_count_buffer;
{
log_write(0, LOG_PANIC,
"acl_smtp_mime: can't unlink RFC822 spool file, skipping.");
- goto END_MIME_ACL;
+ goto END_MIME_ACL;
}
+ rfc822_file_path = NULL;
}
/* check if we must check any message/rfc822 attachments */
if (rc == OK)
{
- uschar * scandir;
+ uschar * scandir = string_copyn(mbox_filename,
+ Ustrrchr(mbox_filename, '/') - mbox_filename);
struct dirent * entry;
DIR * tempdir;
- scandir = string_copyn(mbox_filename, Ustrrchr(mbox_filename, '/') - mbox_filename);
-
- tempdir = opendir(CS scandir);
- for (;;)
- {
- if (!(entry = readdir(tempdir)))
- break;
+ for (tempdir = exim_opendir(scandir); entry = readdir(tempdir); )
if (strncmpic(US entry->d_name, US"__rfc822_", 9) == 0)
{
- (void) string_format(rfc822_file_path, sizeof(rfc822_file_path),
- "%s/%s", scandir, entry->d_name);
- DEBUG(D_receive) debug_printf("RFC822 attachment detected: running MIME ACL for '%s'\n",
- rfc822_file_path);
+ rfc822_file_path = string_sprintf("%s/%s", scandir, entry->d_name);
+ DEBUG(D_receive)
+ debug_printf("RFC822 attachment detected: running MIME ACL for '%s'\n",
+ rfc822_file_path);
break;
}
- }
closedir(tempdir);
- if (entry)
+ if (rfc822_file_path)
{
if ((mbox_file = Ufopen(rfc822_file_path, "rb")))
{
{
recipients_count = 0;
*blackholed_by_ptr = US"MIME ACL";
+ cancel_cutthrough_connection(TRUE, US"mime acl discard");
}
else if (rc != OK)
{
Uunlink(spool_name);
+ cancel_cutthrough_connection(TRUE, US"mime acl not ok");
unspool_mbox();
#ifdef EXPERIMENTAL_DCC
dcc_ok = 0;
#endif
- if ( smtp_input
- && smtp_handle_acl_fail(ACL_WHERE_MIME, rc, user_msg, log_msg) != 0)
+ if (smtp_input)
{
- *smtp_yield_ptr = FALSE; /* No more messages after dropped connection */
+ if (smtp_handle_acl_fail(ACL_WHERE_MIME, rc, user_msg, log_msg) != 0)
+ *smtp_yield_ptr = FALSE; /* No more messages after dropped connection */
*smtp_reply_ptr = US""; /* Indicate reply already sent */
}
message_id[0] = 0; /* Indicate no message accepted */
BOOL
receive_msg(BOOL extract_recip)
{
-int i;
int rc = FAIL;
int msg_size = 0;
int process_info_len = Ustrlen(process_info);
-int error_rc = (error_handling == ERRORS_SENDER)?
- errors_sender_rc : EXIT_FAILURE;
+int error_rc = error_handling == ERRORS_SENDER
+ ? errors_sender_rc : EXIT_FAILURE;
int header_size = 256;
int start, end, domain;
-int id_resolution;
+int id_resolution = 0;
int had_zero = 0;
int prevlines_length = 0;
-register int ptr = 0;
+int ptr = 0;
BOOL contains_resent_headers = FALSE;
BOOL extracted_ignored = FALSE;
uschar *queued_by = NULL;
uschar *errmsg;
+rmark rcvd_log_reset_point;
gstring * g;
struct stat statbuf;
/* Working header pointers */
-header_line *h, *next;
+rmark reset_point;
+header_line *next;
/* Flags for noting the existence of certain headers (only one left) */
header_line *subject_header = NULL;
header_line *msgid_header = NULL;
header_line *received_header;
-
-#ifdef EXPERIMENTAL_DMARC
-int dmarc_up = 0;
-#endif /* EXPERIMENTAL_DMARC */
+BOOL msgid_header_newly_created = FALSE;
/* Variables for use when building the Received: header. */
uschar *timestamp;
int tslen;
+
/* Release any open files that might have been cached while preparing to
accept the message - e.g. by verifying addresses - because reading a message
might take a fair bit of real time. */
header. Temporarily mark it as "old", i.e. not to be used. We keep header_last
pointing to the end of the chain to make adding headers simple. */
-received_header = header_list = header_last = store_get(sizeof(header_line));
+received_header = header_list = header_last = store_get(sizeof(header_line), FALSE);
header_list->next = NULL;
header_list->type = htype_old;
header_list->text = NULL;
/* Control block for the next header to be read. */
-next = store_get(sizeof(header_line));
-next->text = store_get(header_size);
+reset_point = store_mark();
+next = store_get(sizeof(header_line), FALSE); /* not tainted */
+next->text = store_get(header_size, TRUE); /* tainted */
/* Initialize message id to be null (indicating no message read), and the
header names list to be the normal list. Indicate there is no data file open
yet, initialize the size and warning count, and deal with no size limit. */
message_id[0] = 0;
-data_file = NULL;
+spool_data_file = NULL;
data_fd = -1;
spool_name = US"";
message_size = 0;
message_linecount = body_linecount = body_zerocount =
max_received_linelength = 0;
+#ifdef WITH_CONTENT_SCAN
+/* reset non-per-part mime variables */
+mime_is_coverletter = 0;
+mime_is_rfc822 = 0;
+mime_part_count = -1;
+#endif
+
#ifndef DISABLE_DKIM
/* Call into DKIM to set up the context. In CHUNKING mode
we clear the dot-stuffing flag */
-if (smtp_input && !smtp_batched_input && !dkim_disable_verify)
+if (smtp_input && !smtp_batched_input && !f.dkim_disable_verify)
dkim_exim_verify_init(chunking_state <= CHUNKING_OFFERED);
#endif
-#ifdef EXPERIMENTAL_DMARC
-/* initialize libopendmarc */
-dmarc_up = dmarc_init();
+#ifdef SUPPORT_DMARC
+if (sender_host_address) dmarc_init(); /* initialize libopendmarc */
#endif
/* Remember the time of reception. Exim uses time+pid for uniqueness of message
/* For other uses of the received time we can operate with granularity of one
second, and for that we use the global variable received_time. This is for
-things like ultimate message timeouts.XXX */
+things like ultimate message timeouts. */
received_time = message_id_tv;
/* If SMTP input, set the special handler for timeouts. The alarm() calls
happen in the smtp_getc() function when it refills its buffer. */
-if (smtp_input) os_non_restarting_signal(SIGALRM, data_timeout_handler);
+had_data_timeout = 0;
+if (smtp_input)
+ os_non_restarting_signal(SIGALRM, data_timeout_handler);
/* If not SMTP input, timeout happens only if configured, and we just set a
single timeout for the whole message. */
else if (receive_timeout > 0)
{
os_non_restarting_signal(SIGALRM, data_timeout_handler);
- alarm(receive_timeout);
+ ALARM(receive_timeout);
}
/* SIGTERM and SIGINT are caught always. */
+had_data_sigint = 0;
signal(SIGTERM, data_sigterm_sigint_handler);
signal(SIGINT, data_sigterm_sigint_handler);
(and sometimes lunatic messages can have ones that are 100s of K long) we
call store_release() for strings that have been copied - if the string is at
the start of a block (and therefore the only thing in it, because we aren't
- doing any other gets), the block gets freed. We can only do this because we
- know there are no other calls to store_get() going on. */
+ doing any other gets), the block gets freed. We can only do this release if
+ there were no allocations since the once that we want to free. */
if (ptr >= header_size - 4)
{
int oldsize = header_size;
- /* header_size += 256; */
+
+ if (header_size >= INT_MAX/2)
+ goto OVERSIZE;
header_size *= 2;
- if (!store_extend(next->text, oldsize, header_size))
- {
- uschar *newtext = store_get(header_size);
- memcpy(newtext, next->text, ptr);
- store_release(next->text);
- next->text = newtext;
- }
+
+ /* The data came from the message, so is tainted. */
+
+ if (!store_extend(next->text, TRUE, oldsize, header_size))
+ next->text = store_newblock(next->text, TRUE, header_size, ptr);
}
/* Cope with receiving a binary zero. There is dispute about whether
prevent further reading), and break out of the loop, having freed the
empty header, and set next = NULL to indicate no data line. */
- if (ptr == 0 && ch == '.' && (smtp_input || dot_ends))
+ if (ptr == 0 && ch == '.' && f.dot_ends)
{
ch = (receive_getc)(GETC_BUFFER_UNLIMITED);
if (ch == '\r')
if (ch == '\n')
{
message_ended = END_DOT;
- store_reset(next);
+ reset_point = store_reset(reset_point);
next = NULL;
break; /* End character-reading loop */
}
if (message_size >= header_maxsize)
{
+OVERSIZE:
next->text[ptr] = 0;
next->slen = ptr;
next->type = htype_other;
log_write(0, LOG_MAIN, "ridiculously long message header received from "
"%s (more than %d characters): message abandoned",
- sender_host_unknown? sender_ident : sender_fullhost, header_maxsize);
+ f.sender_host_unknown ? sender_ident : sender_fullhost, header_maxsize);
if (smtp_input)
{
if (ptr == 1)
{
- store_reset(next);
+ reset_point = store_reset(reset_point);
next = NULL;
break;
}
if (nextch == ' ' || nextch == '\t')
{
next->text[ptr++] = nextch;
- message_size++;
+ if (++message_size >= header_maxsize)
+ goto OVERSIZE;
continue; /* Iterate the loop */
}
else if (nextch != EOF) (receive_ungetc)(nextch); /* For next time */
next->text[ptr] = 0;
next->slen = ptr;
- store_reset(next->text + ptr + 1);
+ store_release_above(next->text + ptr + 1);
/* Check the running total size against the overall message size limit. We
don't expect to fail here, but if the overall limit is set less than MESSAGE_
these lines in SMTP messages. There is now an option to ignore them from
specified hosts or networks. Sigh. */
- if (header_last == header_list &&
- (!smtp_input
- ||
- (sender_host_address != NULL &&
- verify_check_host(&ignore_fromline_hosts) == OK)
- ||
- (sender_host_address == NULL && ignore_fromline_local)
- ) &&
- regex_match_and_setup(regex_From, next->text, 0, -1))
+ if ( header_last == header_list
+ && ( !smtp_input
+ || ( sender_host_address
+ && verify_check_host(&ignore_fromline_hosts) == OK
+ )
+ || (!sender_host_address && ignore_fromline_local)
+ )
+ && regex_match_and_setup(regex_From, next->text, 0, -1)
+ )
{
- if (!sender_address_forced)
+ if (!f.sender_address_forced)
{
uschar *uucp_sender = expand_string(uucp_from_sender);
- if (uucp_sender == NULL)
- {
+ if (!uucp_sender)
log_write(0, LOG_MAIN|LOG_PANIC,
"expansion of \"%s\" failed after matching "
"\"From \" line: %s", uucp_from_sender, expand_string_message);
- }
else
{
int start, end, domain;
uschar *errmess;
uschar *newsender = parse_extract_address(uucp_sender, &errmess,
&start, &end, &domain, TRUE);
- if (newsender != NULL)
+ if (newsender)
{
if (domain == 0 && newsender[0] != 0)
newsender = rewrite_address_qualify(newsender, FALSE);
{
sender_address = newsender;
- if (trusted_caller || filter_test != FTEST_NONE)
+ if (f.trusted_caller || filter_test != FTEST_NONE)
{
authenticated_sender = NULL;
originator_name = US"";
- sender_local = FALSE;
+ f.sender_local = FALSE;
}
if (filter_test != FTEST_NONE)
the line, stomp on them here. */
if (had_zero > 0)
- for (p = next->text; p < next->text + ptr; p++) if (*p == 0) *p = '?';
+ for (uschar * p = next->text; p < next->text + ptr; p++) if (*p == 0)
+ *p = '?';
/* It is perfectly legal to have an empty continuation line
at the end of a header, but it is confusing to humans
{
log_write(0, LOG_MAIN, "overlong message header line received from "
"%s (more than %d characters): message abandoned",
- sender_host_unknown? sender_ident : sender_fullhost,
+ f.sender_host_unknown ? sender_ident : sender_fullhost,
header_line_maxsize);
if (smtp_input)
}
else
- {
give_local_error(ERRMESS_VLONGHDRLINE,
string_sprintf("message header line longer than %d characters "
"received: message not accepted", header_line_maxsize), US"",
error_rc, stdin, header_list->next);
/* Does not return */
- }
}
/* Note if any resent- fields exist. */
/* Set up for the next header */
+ reset_point = store_mark();
header_size = 256;
- next = store_get(sizeof(header_line));
- next->text = store_get(header_size);
+ next = store_get(sizeof(header_line), FALSE);
+ next->text = store_get(header_size, TRUE);
ptr = 0;
had_zero = 0;
prevlines_length = 0;
DEBUG(D_receive)
{
debug_printf(">>Headers received:\n");
- for (h = header_list->next; h; h = h->next)
+ for (header_line * h = header_list->next; h; h = h->next)
debug_printf("%s", h->text);
debug_printf("\n");
}
/* Scan the headers to identify them. Some are merely marked for later
processing; some are dealt with here. */
-for (h = header_list->next; h; h = h->next)
+for (header_line * h = header_list->next; h; h = h->next)
{
BOOL is_resent = strncmpic(h->text, US"resent-", 7) == 0;
if (is_resent) contains_resent_headers = TRUE;
switch (header_checkname(h, is_resent))
{
case htype_bcc:
- h->type = htype_bcc; /* Both Bcc: and Resent-Bcc: */
- break;
+ h->type = htype_bcc; /* Both Bcc: and Resent-Bcc: */
+ break;
case htype_cc:
- h->type = htype_cc; /* Both Cc: and Resent-Cc: */
- break;
+ h->type = htype_cc; /* Both Cc: and Resent-Cc: */
+ break;
- /* Record whether a Date: or Resent-Date: header exists, as appropriate. */
+ /* Record whether a Date: or Resent-Date: header exists, as appropriate. */
case htype_date:
- if (!resents_exist || is_resent) date_header_exists = TRUE;
- break;
+ if (!resents_exist || is_resent) date_header_exists = TRUE;
+ break;
- /* Same comments as about Return-Path: below. */
+ /* Same comments as about Return-Path: below. */
case htype_delivery_date:
- if (delivery_date_remove) h->type = htype_old;
- break;
+ if (delivery_date_remove) h->type = htype_old;
+ break;
- /* Same comments as about Return-Path: below. */
+ /* Same comments as about Return-Path: below. */
case htype_envelope_to:
- if (envelope_to_remove) h->type = htype_old;
- break;
+ if (envelope_to_remove) h->type = htype_old;
+ break;
- /* Mark all "From:" headers so they get rewritten. Save the one that is to
- be used for Sender: checking. For Sendmail compatibility, if the "From:"
- header consists of just the login id of the user who called Exim, rewrite
- it with the gecos field first. Apply this rule to Resent-From: if there
- are resent- fields. */
+ /* Mark all "From:" headers so they get rewritten. Save the one that is to
+ be used for Sender: checking. For Sendmail compatibility, if the "From:"
+ header consists of just the login id of the user who called Exim, rewrite
+ it with the gecos field first. Apply this rule to Resent-From: if there
+ are resent- fields. */
case htype_from:
- h->type = htype_from;
- if (!resents_exist || is_resent)
- {
- from_header = h;
- if (!smtp_input)
- {
- int len;
- uschar *s = Ustrchr(h->text, ':') + 1;
- while (isspace(*s)) s++;
- len = h->slen - (s - h->text) - 1;
- if (Ustrlen(originator_login) == len &&
- strncmpic(s, originator_login, len) == 0)
- {
- uschar *name = is_resent? US"Resent-From" : US"From";
- header_add(htype_from, "%s: %s <%s@%s>\n", name, originator_name,
- originator_login, qualify_domain_sender);
- from_header = header_last;
- h->type = htype_old;
- DEBUG(D_receive|D_rewrite)
- debug_printf("rewrote \"%s:\" header using gecos\n", name);
- }
- }
- }
- break;
+ h->type = htype_from;
+ if (!resents_exist || is_resent)
+ {
+ from_header = h;
+ if (!smtp_input)
+ {
+ int len;
+ uschar *s = Ustrchr(h->text, ':') + 1;
+ while (isspace(*s)) s++;
+ len = h->slen - (s - h->text) - 1;
+ if (Ustrlen(originator_login) == len &&
+ strncmpic(s, originator_login, len) == 0)
+ {
+ uschar *name = is_resent? US"Resent-From" : US"From";
+ header_add(htype_from, "%s: %s <%s@%s>\n", name, originator_name,
+ originator_login, qualify_domain_sender);
+ from_header = header_last;
+ h->type = htype_old;
+ DEBUG(D_receive|D_rewrite)
+ debug_printf("rewrote \"%s:\" header using gecos\n", name);
+ }
+ }
+ }
+ break;
- /* Identify the Message-id: header for generating "in-reply-to" in the
- autoreply transport. For incoming logging, save any resent- value. In both
- cases, take just the first of any multiples. */
+ /* Identify the Message-id: header for generating "in-reply-to" in the
+ autoreply transport. For incoming logging, save any resent- value. In both
+ cases, take just the first of any multiples. */
case htype_id:
- if (msgid_header == NULL && (!resents_exist || is_resent))
- {
- msgid_header = h;
- h->type = htype_id;
- }
- break;
+ if (!msgid_header && (!resents_exist || is_resent))
+ {
+ msgid_header = h;
+ h->type = htype_id;
+ }
+ break;
- /* Flag all Received: headers */
+ /* Flag all Received: headers */
case htype_received:
- h->type = htype_received;
- received_count++;
- break;
+ h->type = htype_received;
+ received_count++;
+ break;
- /* "Reply-to:" is just noted (there is no resent-reply-to field) */
+ /* "Reply-to:" is just noted (there is no resent-reply-to field) */
case htype_reply_to:
- h->type = htype_reply_to;
- break;
+ h->type = htype_reply_to;
+ break;
- /* The Return-path: header is supposed to be added to messages when
- they leave the SMTP system. We shouldn't receive messages that already
- contain Return-path. However, since Exim generates Return-path: on
- local delivery, resent messages may well contain it. We therefore
- provide an option (which defaults on) to remove any Return-path: headers
- on input. Removal actually means flagging as "old", which prevents the
- header being transmitted with the message. */
+ /* The Return-path: header is supposed to be added to messages when
+ they leave the SMTP system. We shouldn't receive messages that already
+ contain Return-path. However, since Exim generates Return-path: on
+ local delivery, resent messages may well contain it. We therefore
+ provide an option (which defaults on) to remove any Return-path: headers
+ on input. Removal actually means flagging as "old", which prevents the
+ header being transmitted with the message. */
case htype_return_path:
- if (return_path_remove) h->type = htype_old;
+ if (return_path_remove) h->type = htype_old;
- /* If we are testing a mail filter file, use the value of the
- Return-Path: header to set up the return_path variable, which is not
- otherwise set. However, remove any <> that surround the address
- because the variable doesn't have these. */
+ /* If we are testing a mail filter file, use the value of the
+ Return-Path: header to set up the return_path variable, which is not
+ otherwise set. However, remove any <> that surround the address
+ because the variable doesn't have these. */
- if (filter_test != FTEST_NONE)
- {
- uschar *start = h->text + 12;
- uschar *end = start + Ustrlen(start);
- while (isspace(*start)) start++;
- while (end > start && isspace(end[-1])) end--;
- if (*start == '<' && end[-1] == '>')
- {
- start++;
- end--;
- }
- return_path = string_copyn(start, end - start);
- printf("Return-path taken from \"Return-path:\" header line\n");
- }
- break;
+ if (filter_test != FTEST_NONE)
+ {
+ uschar *start = h->text + 12;
+ uschar *end = start + Ustrlen(start);
+ while (isspace(*start)) start++;
+ while (end > start && isspace(end[-1])) end--;
+ if (*start == '<' && end[-1] == '>')
+ {
+ start++;
+ end--;
+ }
+ return_path = string_copyn(start, end - start);
+ printf("Return-path taken from \"Return-path:\" header line\n");
+ }
+ break;
/* If there is a "Sender:" header and the message is locally originated,
and from an untrusted caller and suppress_local_fixups is not set, or if we
set.) */
case htype_sender:
- h->type = ((!active_local_sender_retain &&
- (
- (sender_local && !trusted_caller && !suppress_local_fixups)
- || submission_mode
- )
- ) &&
- (!resents_exist||is_resent))?
- htype_old : htype_sender;
- break;
+ h->type = !f.active_local_sender_retain
+ && ( f.sender_local && !f.trusted_caller && !f.suppress_local_fixups
+ || f.submission_mode
+ )
+ && (!resents_exist || is_resent)
+ ? htype_old : htype_sender;
+ break;
- /* Remember the Subject: header for logging. There is no Resent-Subject */
+ /* Remember the Subject: header for logging. There is no Resent-Subject */
case htype_subject:
- subject_header = h;
- break;
+ subject_header = h;
+ break;
- /* "To:" gets flagged, and the existence of a recipient header is noted,
- whether it's resent- or not. */
+ /* "To:" gets flagged, and the existence of a recipient header is noted,
+ whether it's resent- or not. */
case htype_to:
- h->type = htype_to;
- /****
- to_or_cc_header_exists = TRUE;
- ****/
- break;
+ h->type = htype_to;
+ /****
+ to_or_cc_header_exists = TRUE;
+ ****/
+ break;
}
}
/* Now scan the headers */
- for (h = header_list->next; h; h = h->next)
+ for (header_line * h = header_list->next; h; h = h->next)
{
if ((h->type == htype_to || h->type == htype_cc || h->type == htype_bcc) &&
(!contains_resent_headers || strncmpic(h->text, US"resent-", 7) == 0))
uschar *s = Ustrchr(h->text, ':') + 1;
while (isspace(*s)) s++;
- parse_allow_group = TRUE; /* Allow address group syntax */
+ f.parse_allow_group = TRUE; /* Allow address group syntax */
while (*s != 0)
{
uschar *ss = parse_find_address_end(s, FALSE);
- uschar *recipient, *errmess, *p, *pp;
+ uschar *recipient, *errmess, *pp;
int start, end, domain;
/* Check on maximum */
if (recipients_max > 0 && ++rcount > recipients_max)
- {
give_local_error(ERRMESS_TOOMANYRECIP, US"too many recipients",
US"message rejected: ", error_rc, stdin, NULL);
/* Does not return */
- }
/* Make a copy of the address, and remove any internal newlines. These
may be present as a result of continuations of the header line. The
white space that follows the newline must not be removed - it is part
of the header. */
- pp = recipient = store_get(ss - s + 1);
- for (p = s; p < ss; p++) if (*p != '\n') *pp++ = *p;
+ pp = recipient = store_get(ss - s + 1, is_tainted(s));
+ for (uschar * p = s; p < ss; p++) if (*p != '\n') *pp++ = *p;
*pp = 0;
#ifdef SUPPORT_I18N
If there are no recipients at all, an error will occur later. */
- if (recipient == NULL && Ustrcmp(errmess, "empty address") != 0)
+ if (!recipient && Ustrcmp(errmess, "empty address") != 0)
{
int len = Ustrlen(s);
- error_block *b = store_get(sizeof(error_block));
+ error_block *b = store_get(sizeof(error_block), FALSE);
while (len > 0 && isspace(s[len-1])) len--;
b->next = NULL;
b->text1 = string_printing(string_copyn(s, len));
while (isspace(*s)) s++;
} /* Next address */
- parse_allow_group = FALSE; /* Reset group syntax flags */
- parse_found_group = FALSE;
+ f.parse_allow_group = FALSE; /* Reset group syntax flags */
+ f.parse_found_group = FALSE;
/* If this was the bcc: header, mark it "old", which means it
will be kept on the spool, but not transmitted as part of the
left in id_resolution so that an appropriate wait can be done after receiving
the message, if necessary (we hope it won't be). */
-if (host_number_string != NULL)
+if (host_number_string)
{
- id_resolution = (BASE_62 == 62)? 5000 : 10000;
+ id_resolution = BASE_62 == 62 ? 5000 : 10000;
sprintf(CS(message_id + MESSAGE_ID_LENGTH - 3), "-%2s",
string_base62((long int)(
host_number * (1000000/id_resolution) +
else
{
- id_resolution = (BASE_62 == 62)? 500 : 1000;
+ id_resolution = BASE_62 == 62 ? 500 : 1000;
sprintf(CS(message_id + MESSAGE_ID_LENGTH - 3), "-%2s",
string_base62((long int)(message_id_tv.tv_usec/id_resolution)) + 4);
}
to be the least significant base-62 digit of the time of arrival. Otherwise
ensure that it is an empty string. */
-message_subdir[0] = split_spool_directory ? message_id[5] : 0;
+set_subdir_str(message_subdir, message_id, 0);
/* Now that we have the message-id, if there is no message-id: header, generate
one, but only for local (without suppress_local_fixups) or submission mode
messages. This can be user-configured if required, but we had better flatten
any illegal characters therein. */
-if (msgid_header == NULL &&
- ((sender_host_address == NULL && !suppress_local_fixups)
- || submission_mode))
+if ( !msgid_header
+ && ((!sender_host_address && !f.suppress_local_fixups) || f.submission_mode))
{
- uschar *p;
uschar *id_text = US"";
uschar *id_domain = primary_hostname;
+ header_line * h;
/* Permit only letters, digits, dots, and hyphens in the domain */
- if (message_id_domain != NULL)
+ if (message_id_domain)
{
uschar *new_id_domain = expand_string(message_id_domain);
- if (new_id_domain == NULL)
+ if (!new_id_domain)
{
- if (!expand_string_forcedfail)
+ if (!f.expand_string_forcedfail)
log_write(0, LOG_MAIN|LOG_PANIC,
"expansion of \"%s\" (message_id_header_domain) "
"failed: %s", message_id_domain, expand_string_message);
}
- else if (*new_id_domain != 0)
+ else if (*new_id_domain)
{
id_domain = new_id_domain;
- for (p = id_domain; *p != 0; p++)
+ for (uschar * p = id_domain; *p; p++)
if (!isalnum(*p) && *p != '.') *p = '-'; /* No need to test '-' ! */
}
}
/* Permit all characters except controls and RFC 2822 specials in the
additional text part. */
- if (message_id_text != NULL)
+ if (message_id_text)
{
uschar *new_id_text = expand_string(message_id_text);
- if (new_id_text == NULL)
+ if (!new_id_text)
{
- if (!expand_string_forcedfail)
+ if (!f.expand_string_forcedfail)
log_write(0, LOG_MAIN|LOG_PANIC,
"expansion of \"%s\" (message_id_header_text) "
"failed: %s", message_id_text, expand_string_message);
}
- else if (*new_id_text != 0)
+ else if (*new_id_text)
{
id_text = new_id_text;
- for (p = id_text; *p != 0; p++)
- if (mac_iscntrl_or_special(*p)) *p = '-';
+ for (uschar * p = id_text; *p; p++) if (mac_iscntrl_or_special(*p)) *p = '-';
}
}
- /* Add the header line
- * Resent-* headers are prepended, per RFC 5322 3.6.6. Non-Resent-* are
- * appended, to preserve classical expectations of header ordering. */
+ /* Add the header line.
+ Resent-* headers are prepended, per RFC 5322 3.6.6. Non-Resent-* are
+ appended, to preserve classical expectations of header ordering. */
- header_add_at_position(!resents_exist, NULL, FALSE, htype_id,
+ h = header_add_at_position_internal(!resents_exist, NULL, FALSE, htype_id,
"%sMessage-Id: <%s%s%s@%s>\n", resent_prefix, message_id_external,
- (*id_text == 0)? "" : ".", id_text, id_domain);
+ *id_text == 0 ? "" : ".", id_text, id_domain);
+
+ /* Arrange for newly-created Message-Id to be logged */
+
+ if (!resents_exist)
+ {
+ msgid_header_newly_created = TRUE;
+ msgid_header = h;
+ }
}
/* If we are to log recipients, keep a copy of the raw ones before any possible
if (LOGGING(received_recipients))
{
- raw_recipients = store_get(recipients_count * sizeof(uschar *));
- for (i = 0; i < recipients_count; i++)
+ raw_recipients = store_get(recipients_count * sizeof(uschar *), FALSE);
+ for (int i = 0; i < recipients_count; i++)
raw_recipients[i] = string_copy(recipients_list[i].address);
raw_recipients_count = recipients_count;
}
recipients will get here only if the conditions were right (allow_unqualified_
recipient is TRUE). */
-for (i = 0; i < recipients_count; i++)
+for (int i = 0; i < recipients_count; i++)
recipients_list[i].address =
rewrite_address(recipients_list[i].address, TRUE, TRUE,
global_rewrite_rules, rewrite_existflags);
untrusted user to set anything in the envelope (which might then get info
From:) but we still want to ensure a valid Sender: if it is required. */
-if (from_header == NULL &&
- ((sender_host_address == NULL && !suppress_local_fixups)
- || submission_mode))
+if ( !from_header
+ && ((!sender_host_address && !f.suppress_local_fixups) || f.submission_mode))
{
uschar *oname = US"";
force its value or if we have a non-SMTP message for which -f was not used
to set the sender. */
- if (sender_host_address == NULL)
+ if (!sender_host_address)
{
- if (!trusted_caller || sender_name_forced ||
- (!smtp_input && !sender_address_forced))
+ if (!f.trusted_caller || f.sender_name_forced ||
+ (!smtp_input && !f.sender_address_forced))
oname = originator_name;
}
/* For non-locally submitted messages, the only time we use the originator
name is when it was forced by the /name= option on control=submission. */
- else
- {
- if (submission_name != NULL) oname = submission_name;
- }
+ else if (submission_name) oname = submission_name;
/* Envelope sender is empty */
- if (sender_address[0] == 0)
+ if (!*sender_address)
{
uschar *fromstart, *fromend;
- fromstart = string_sprintf("%sFrom: %s%s", resent_prefix,
- oname, (oname[0] == 0)? "" : " <");
- fromend = (oname[0] == 0)? US"" : US">";
+ fromstart = string_sprintf("%sFrom: %s%s",
+ resent_prefix, oname, *oname ? " <" : "");
+ fromend = *oname ? US">" : US"";
- if (sender_local || local_error_message)
- {
+ if (f.sender_local || f.local_error_message)
header_add(htype_from, "%s%s@%s%s\n", fromstart,
local_part_quote(originator_login), qualify_domain_sender,
fromend);
- }
- else if (submission_mode && authenticated_id != NULL)
+
+ else if (f.submission_mode && authenticated_id)
{
- if (submission_domain == NULL)
- {
+ if (!submission_domain)
header_add(htype_from, "%s%s@%s%s\n", fromstart,
local_part_quote(authenticated_id), qualify_domain_sender,
fromend);
- }
- else if (submission_domain[0] == 0) /* empty => whole address set */
- {
+
+ else if (!*submission_domain) /* empty => whole address set */
header_add(htype_from, "%s%s%s\n", fromstart, authenticated_id,
fromend);
- }
+
else
- {
header_add(htype_from, "%s%s@%s%s\n", fromstart,
- local_part_quote(authenticated_id), submission_domain,
- fromend);
- }
+ local_part_quote(authenticated_id), submission_domain, fromend);
+
from_header = header_last; /* To get it checked for Sender: */
}
}
{
header_add(htype_from, "%sFrom: %s%s%s%s\n", resent_prefix,
oname,
- (oname[0] == 0)? "" : " <",
- (sender_address_unrewritten == NULL)?
- sender_address : sender_address_unrewritten,
- (oname[0] == 0)? "" : ">");
+ *oname ? " <" : "",
+ sender_address_unrewritten ? sender_address_unrewritten : sender_address,
+ *oname ? ">" : "");
from_header = header_last; /* To get it checked for Sender: */
}
here. If the From: header contains more than one address, then the call to
parse_extract_address fails, and a Sender: header is inserted, as required. */
-if (from_header != NULL &&
- (active_local_from_check &&
- ((sender_local && !trusted_caller && !suppress_local_fixups) ||
- (submission_mode && authenticated_id != NULL))
- ))
+if ( from_header
+ && ( f.active_local_from_check
+ && ( f.sender_local && !f.trusted_caller && !f.suppress_local_fixups
+ || f.submission_mode && authenticated_id
+ ) ) )
{
BOOL make_sender = TRUE;
int start, end, domain;
&start, &end, &domain, FALSE);
uschar *generated_sender_address;
- if (submission_mode)
- {
- if (submission_domain == NULL)
- {
- generated_sender_address = string_sprintf("%s@%s",
- local_part_quote(authenticated_id), qualify_domain_sender);
- }
- else if (submission_domain[0] == 0) /* empty => full address */
- {
- generated_sender_address = string_sprintf("%s",
- authenticated_id);
- }
- else
- {
- generated_sender_address = string_sprintf("%s@%s",
- local_part_quote(authenticated_id), submission_domain);
- }
- }
- else
- generated_sender_address = string_sprintf("%s@%s",
- local_part_quote(originator_login), qualify_domain_sender);
+ generated_sender_address = f.submission_mode
+ ? !submission_domain
+ ? string_sprintf("%s@%s",
+ local_part_quote(authenticated_id), qualify_domain_sender)
+ : !*submission_domain /* empty => full address */
+ ? string_sprintf("%s", authenticated_id)
+ : string_sprintf("%s@%s",
+ local_part_quote(authenticated_id), submission_domain)
+ : string_sprintf("%s@%s",
+ local_part_quote(originator_login), qualify_domain_sender);
/* Remove permitted prefixes and suffixes from the local part of the From:
address before doing the comparison with the generated sender. */
- if (from_address != NULL)
+ if (from_address)
{
int slen;
- uschar *at = (domain == 0)? NULL : from_address + domain - 1;
+ uschar *at = domain ? from_address + domain - 1 : NULL;
- if (at != NULL) *at = 0;
- from_address += route_check_prefix(from_address, local_from_prefix);
- slen = route_check_suffix(from_address, local_from_suffix);
- if (slen > 0)
+ if (at) *at = 0;
+ from_address += route_check_prefix(from_address, local_from_prefix, NULL);
+ if ((slen = route_check_suffix(from_address, local_from_suffix, NULL)) > 0)
{
memmove(from_address+slen, from_address, Ustrlen(from_address)-slen);
from_address += slen;
}
- if (at != NULL) *at = '@';
+ if (at) *at = '@';
- if (strcmpic(generated_sender_address, from_address) == 0 ||
- (domain == 0 && strcmpic(from_address, originator_login) == 0))
+ if ( strcmpic(generated_sender_address, from_address) == 0
+ || (!domain && strcmpic(from_address, originator_login) == 0))
make_sender = FALSE;
}
appropriate rewriting rules. */
if (make_sender)
- {
- if (submission_mode && submission_name == NULL)
+ if (f.submission_mode && !submission_name)
header_add(htype_sender, "%sSender: %s\n", resent_prefix,
generated_sender_address);
else
header_add(htype_sender, "%sSender: %s <%s>\n",
resent_prefix,
- submission_mode? submission_name : originator_name,
+ f.submission_mode ? submission_name : originator_name,
generated_sender_address);
- }
/* Ensure that a non-null envelope sender address corresponds to the
submission mode sender address. */
- if (submission_mode && sender_address[0] != 0)
+ if (f.submission_mode && *sender_address)
{
- if (sender_address_unrewritten == NULL)
+ if (!sender_address_unrewritten)
sender_address_unrewritten = sender_address;
sender_address = generated_sender_address;
if (Ustrcmp(sender_address_unrewritten, generated_sender_address) != 0)
/* If there are any rewriting rules, apply them to the sender address, unless
it has already been rewritten as part of verification for SMTP input. */
-if (global_rewrite_rules != NULL && sender_address_unrewritten == NULL &&
- sender_address[0] != 0)
+if (global_rewrite_rules && !sender_address_unrewritten && *sender_address)
{
sender_address = rewrite_address(sender_address, FALSE, TRUE,
global_rewrite_rules, rewrite_existflags);
documented as happening *after* recipient addresses are taken from the headers
by the -t command line option. An added Sender: gets rewritten here. */
-for (h = header_list->next; h; h = h->next)
+for (header_line * h = header_list->next; h; h = h->next)
{
header_line *newh = rewrite_header(h, NULL, NULL, global_rewrite_rules,
rewrite_existflags, TRUE);
As per Message-Id, we prepend if resending, else append.
*/
-if (!date_header_exists &&
- ((sender_host_address == NULL && !suppress_local_fixups)
- || submission_mode))
+if ( !date_header_exists
+ && ((!sender_host_address && !f.suppress_local_fixups) || f.submission_mode))
header_add_at_position(!resents_exist, NULL, FALSE, htype_other,
"%sDate: %s\n", resent_prefix, tod_stamp(tod_full));
DEBUG(D_receive)
{
debug_printf(">>Headers after rewriting and local additions:\n");
- for (h = header_list->next; h != NULL; h = h->next)
+ for (header_line * h = header_list->next; h; h = h->next)
debug_printf("%c %s", h->type, h->text);
debug_printf("\n");
}
so the timestamp behaviour is a change to the normal case.
Having created it, send the headers to the destination. */
-if (cutthrough.fd >= 0 && cutthrough.delivery)
+if (cutthrough.cctx.sock >= 0 && cutthrough.delivery)
{
if (received_count > received_headers_max)
{
/* Make sure the file's group is the Exim gid, and double-check the mode
because the group setting doesn't always get set automatically. */
-if (fchown(data_fd, exim_uid, exim_gid))
+if (0 != exim_fchown(data_fd, exim_uid, exim_gid, spool_name))
log_write(0, LOG_MAIN|LOG_PANIC_DIE,
"Failed setting ownership on spool file %s: %s",
spool_name, strerror(errno));
are problems when Exim is run under Cygwin (I'm told). See comments in
spool_in.c, where the same locking is done. */
-data_file = fdopen(data_fd, "w+");
+spool_data_file = fdopen(data_fd, "w+");
lock_data.l_type = F_WRLCK;
lock_data.l_whence = SEEK_SET;
lock_data.l_start = 0;
format); write it (remembering that it might contain binary zeros). The result
of fwrite() isn't inspected; instead we call ferror() below. */
-fprintf(data_file, "%s-D\n", message_id);
-if (next != NULL)
+fprintf(spool_data_file, "%s-D\n", message_id);
+if (next)
{
uschar *s = next->text;
int len = next->slen;
- len = fwrite(s, 1, len, data_file); len = len; /* compiler quietening */
- body_linecount++; /* Assumes only 1 line */
+ if (fwrite(s, 1, len, spool_data_file) == len) /* "if" for compiler quietening */
+ body_linecount++; /* Assumes only 1 line */
}
/* Note that we might already be at end of file, or the logical end of file
(indicated by '.'), or might have encountered an error while writing the
message id or "next" line. */
-if (!ferror(data_file) && !(receive_feof)() && message_ended != END_DOT)
+if (!ferror(spool_data_file) && !(receive_feof)() && message_ended != END_DOT)
{
if (smtp_input)
{
message_ended = chunking_state <= CHUNKING_OFFERED
- ? read_message_data_smtp(data_file)
+ ? read_message_data_smtp(spool_data_file)
: spool_wireformat
- ? read_message_bdat_smtp_wire(data_file)
- : read_message_bdat_smtp(data_file);
+ ? read_message_bdat_smtp_wire(spool_data_file)
+ : read_message_bdat_smtp(spool_data_file);
receive_linecount++; /* The terminating "." line */
}
- else message_ended = read_message_data(data_file);
+ else
+ message_ended = read_message_data(spool_data_file);
receive_linecount += body_linecount; /* For BSMTP errors mainly */
message_linecount += body_linecount;
log_write(L_size_reject, LOG_MAIN|LOG_REJECT, "rejected from <%s>%s%s%s%s: "
"message too big: read=%d max=%d",
sender_address,
- (sender_fullhost == NULL)? "" : " H=",
- (sender_fullhost == NULL)? US"" : sender_fullhost,
- (sender_ident == NULL)? "" : " U=",
- (sender_ident == NULL)? US"" : sender_ident,
+ sender_fullhost ? " H=" : "",
+ sender_fullhost ? sender_fullhost : US"",
+ sender_ident ? " U=" : "",
+ sender_ident ? sender_ident : US"",
message_size,
thismessage_size_limit);
}
else
{
- fseek(data_file, (long int)SPOOL_DATA_START_OFFSET, SEEK_SET);
+ fseek(spool_data_file, (long int)SPOOL_DATA_START_OFFSET, SEEK_SET);
give_local_error(ERRMESS_TOOBIG,
string_sprintf("message too big (max=%d)", thismessage_size_limit),
- US"message rejected: ", error_rc, data_file, header_list);
+ US"message rejected: ", error_rc, spool_data_file, header_list);
/* Does not return */
}
break;
the input in cases of output errors, since the far end doesn't expect to see
anything until the terminating dot line is sent. */
-if (fflush(data_file) == EOF || ferror(data_file) ||
- EXIMfsync(fileno(data_file)) < 0 || (receive_ferror)())
+if (fflush(spool_data_file) == EOF || ferror(spool_data_file) ||
+ EXIMfsync(fileno(spool_data_file)) < 0 || (receive_ferror)())
{
uschar *msg_errno = US strerror(errno);
BOOL input_error = (receive_ferror)() != 0;
uschar *msg = string_sprintf("%s error (%s) while receiving message from %s",
input_error? "Input read" : "Spool write",
msg_errno,
- (sender_fullhost != NULL)? sender_fullhost : sender_ident);
+ sender_fullhost ? sender_fullhost : sender_ident);
log_write(0, LOG_MAIN, "Message abandoned: %s", msg);
Uunlink(spool_name); /* Lose the data file */
else
{
- fseek(data_file, (long int)SPOOL_DATA_START_OFFSET, SEEK_SET);
- give_local_error(ERRMESS_IOERR, msg, US"", error_rc, data_file,
+ fseek(spool_data_file, (long int)SPOOL_DATA_START_OFFSET, SEEK_SET);
+ give_local_error(ERRMESS_IOERR, msg, US"", error_rc, spool_data_file,
header_list);
/* Does not return */
}
/* No I/O errors were encountered while writing the data file. */
DEBUG(D_receive) debug_printf("Data file written for message %s\n", message_id);
+if (LOGGING(receive_time)) timesince(&received_time_taken, &received_time);
/* If there were any bad addresses extracted by -t, or there were no recipients
exit. (This can't be SMTP, which always ensures there's at least one
syntactically good recipient address.) */
-if (extract_recip && (bad_addresses != NULL || recipients_count == 0))
+if (extract_recip && (bad_addresses || recipients_count == 0))
{
DEBUG(D_receive)
{
if (recipients_count == 0) debug_printf("*** No recipients\n");
- if (bad_addresses != NULL)
+ if (bad_addresses)
{
- error_block *eblock = bad_addresses;
debug_printf("*** Bad address(es)\n");
- while (eblock != NULL)
- {
+ for (error_block * eblock = bad_addresses; eblock; eblock = eblock->next)
debug_printf(" %s: %s\n", eblock->text1, eblock->text2);
- eblock = eblock->next;
- }
}
}
- fseek(data_file, (long int)SPOOL_DATA_START_OFFSET, SEEK_SET);
+ log_write(0, LOG_MAIN|LOG_PANIC, "%s %s found in headers",
+ message_id, bad_addresses ? "bad addresses" : "no recipients");
+
+ fseek(spool_data_file, (long int)SPOOL_DATA_START_OFFSET, SEEK_SET);
/* If configured to send errors to the sender, but this fails, force
a failure error code. We use a special one for no recipients so that it
if (error_handling == ERRORS_SENDER)
{
if (!moan_to_sender(
- (bad_addresses == NULL)?
- (extracted_ignored? ERRMESS_IGADDRESS : ERRMESS_NOADDRESS) :
- (recipients_list == NULL)? ERRMESS_BADNOADDRESS : ERRMESS_BADADDRESS,
- bad_addresses, header_list, data_file, FALSE))
- error_rc = (bad_addresses == NULL)? EXIT_NORECIPIENTS : EXIT_FAILURE;
+ bad_addresses
+ ? recipients_list ? ERRMESS_BADADDRESS : ERRMESS_BADNOADDRESS
+ : extracted_ignored ? ERRMESS_IGADDRESS : ERRMESS_NOADDRESS,
+ bad_addresses, header_list, spool_data_file, FALSE
+ ) )
+ error_rc = bad_addresses ? EXIT_FAILURE : EXIT_NORECIPIENTS;
}
else
{
- if (bad_addresses == NULL)
- {
+ if (!bad_addresses)
if (extracted_ignored)
fprintf(stderr, "exim: all -t recipients overridden by command line\n");
else
fprintf(stderr, "exim: no recipients in message\n");
- }
else
{
fprintf(stderr, "exim: invalid address%s",
- (bad_addresses->next == NULL)? ":" : "es:\n");
- while (bad_addresses != NULL)
- {
+ bad_addresses->next ? "es:\n" : ":");
+ for ( ; bad_addresses; bad_addresses = bad_addresses->next)
fprintf(stderr, " %s: %s\n", bad_addresses->text1,
bad_addresses->text2);
- bad_addresses = bad_addresses->next;
- }
}
}
if (recipients_count == 0 || error_handling == ERRORS_STDERR)
{
Uunlink(spool_name);
- (void)fclose(data_file);
- exim_exit(error_rc, US"receiving");
+ (void)fclose(spool_data_file);
+ exim_exit(error_rc);
}
}
code. */
/*XXX eventually add excess Received: check for cutthrough case back when classifying them */
-if (received_header->text == NULL) /* Non-cutthrough case */
+if (!received_header->text) /* Non-cutthrough case */
{
received_header_gen();
deliver_datafile = data_fd;
user_msg = NULL;
-enable_dollar_recipients = TRUE;
+f.enable_dollar_recipients = TRUE;
if (recipients_count == 0)
- blackholed_by = recipients_discarded ? US"MAIL ACL" : US"RCPT ACL";
+ blackholed_by = f.recipients_discarded ? US"MAIL ACL" : US"RCPT ACL";
else
{
{
#ifndef DISABLE_DKIM
- if (!dkim_disable_verify)
+ if (!f.dkim_disable_verify)
{
/* Finish verification */
dkim_exim_verify_finish();
continue;
}
- seen_items = string_catn(seen_items, ":", 1);
+ seen_items = string_catn(seen_items, US":", 1);
}
-
seen_items = string_cat(seen_items, item);
- dkim_exim_acl_setup(item);
- DEBUG(D_receive)
- debug_printf("calling acl_smtp_dkim for dkim_cur_signer='%s'\n",
- item);
-
- rc = acl_check(ACL_WHERE_DKIM, NULL, acl_smtp_dkim,
- &user_msg, &log_msg);
- dkim_exim_verify_log_item();
- results = string_append_listele(results, ':', dkim_verify_status);
-
+ rc = dkim_exim_acl_run(item, &results, &user_msg, &log_msg);
if (rc != OK)
{
DEBUG(D_receive)
#endif /* DISABLE_DKIM */
#ifdef WITH_CONTENT_SCAN
- if (recipients_count > 0 &&
- acl_smtp_mime != NULL &&
- !run_mime_acl(acl_smtp_mime, &smtp_yield, &smtp_reply, &blackholed_by))
+ if ( recipients_count > 0
+ && acl_smtp_mime
+ && !run_mime_acl(acl_smtp_mime, &smtp_yield, &smtp_reply, &blackholed_by)
+ )
goto TIDYUP;
#endif /* WITH_CONTENT_SCAN */
-#ifdef EXPERIMENTAL_DMARC
- dmarc_up = dmarc_store_data(from_header);
-#endif /* EXPERIMENTAL_DMARC */
+#ifdef SUPPORT_DMARC
+ dmarc_store_data(from_header);
+#endif
#ifndef DISABLE_PRDR
if (prdr_requested && recipients_count > 1 && acl_smtp_data_prdr)
{
- unsigned int c;
int all_pass = OK;
int all_fail = FAIL;
smtp_printf("353 PRDR content analysis beginning\r\n", TRUE);
/* Loop through recipients, responses must be in same order received */
- for (c = 0; recipients_count > c; c++)
+ for (unsigned int c = 0; recipients_count > c; c++)
{
uschar * addr= recipients_list[c].address;
uschar * msg= US"PRDR R=<%s> %s";
{
#ifdef WITH_CONTENT_SCAN
- if (acl_not_smtp_mime != NULL &&
- !run_mime_acl(acl_not_smtp_mime, &smtp_yield, &smtp_reply,
- &blackholed_by))
+ if ( acl_not_smtp_mime
+ && !run_mime_acl(acl_not_smtp_mime, &smtp_yield, &smtp_reply,
+ &blackholed_by)
+ )
goto TIDYUP;
#endif /* WITH_CONTENT_SCAN */
- if (acl_not_smtp != NULL)
+ if (acl_not_smtp)
{
uschar *user_msg, *log_msg;
+ f.authentication_local = TRUE;
rc = acl_check(ACL_WHERE_NOTSMTP, NULL, acl_not_smtp, &user_msg, &log_msg);
if (rc == DISCARD)
{
recipients_count = 0;
blackholed_by = US"non-SMTP ACL";
- if (log_msg != NULL)
+ if (log_msg)
blackhole_log_msg = string_sprintf(": %s", log_msg);
}
else if (rc != OK)
/* The ACL can specify where rejections are to be logged, possibly
nowhere. The default is main and reject logs. */
- if (log_reject_target != 0)
+ if (log_reject_target)
log_write(0, log_reject_target, "F=<%s> rejected by non-SMTP ACL: %s",
sender_address, log_msg);
- if (user_msg == NULL) user_msg = US"local configuration problem";
+ if (!user_msg) user_msg = US"local configuration problem";
if (smtp_batched_input)
- {
moan_smtp_batch(NULL, "%d %s", 550, user_msg);
/* Does not return */
- }
else
{
- fseek(data_file, (long int)SPOOL_DATA_START_OFFSET, SEEK_SET);
+ fseek(spool_data_file, (long int)SPOOL_DATA_START_OFFSET, SEEK_SET);
give_local_error(ERRMESS_LOCAL_ACL, user_msg,
- US"message rejected by non-SMTP ACL: ", error_rc, data_file,
+ US"message rejected by non-SMTP ACL: ", error_rc, spool_data_file,
header_list);
/* Does not return */
}
/* The applicable ACLs have been run */
- if (deliver_freeze) frozen_by = US"ACL"; /* for later logging */
- if (queue_only_policy) queued_by = US"ACL";
+ if (f.deliver_freeze) frozen_by = US"ACL"; /* for later logging */
+ if (f.queue_only_policy) queued_by = US"ACL";
}
#ifdef WITH_CONTENT_SCAN
#endif
+#ifdef HAVE_LOCAL_SCAN
/* The final check on the message is to run the scan_local() function. The
version supplied with Exim always accepts, but this is a hook for sysadmins to
supply their own checking code. The local_scan() function is run even when all
the recipients have been discarded. */
-/*XXS could we avoid this for the standard case, given that few people will use it? */
lseek(data_fd, (long int)SPOOL_DATA_START_OFFSET, SEEK_SET);
/* Arrange to catch crashes in local_scan(), so that the -D file gets
deleted, and the incident gets logged. */
-os_non_restarting_signal(SIGSEGV, local_scan_crash_handler);
-os_non_restarting_signal(SIGFPE, local_scan_crash_handler);
-os_non_restarting_signal(SIGILL, local_scan_crash_handler);
-os_non_restarting_signal(SIGBUS, local_scan_crash_handler);
-
-DEBUG(D_receive) debug_printf("calling local_scan(); timeout=%d\n",
- local_scan_timeout);
-local_scan_data = NULL;
-
-os_non_restarting_signal(SIGALRM, local_scan_timeout_handler);
-if (local_scan_timeout > 0) alarm(local_scan_timeout);
-rc = local_scan(data_fd, &local_scan_data);
-alarm(0);
-os_non_restarting_signal(SIGALRM, sigalrm_handler);
-
-enable_dollar_recipients = FALSE;
-
-store_pool = POOL_MAIN; /* In case changed */
-DEBUG(D_receive) debug_printf("local_scan() returned %d %s\n", rc,
- local_scan_data);
-
-os_non_restarting_signal(SIGSEGV, SIG_DFL);
-os_non_restarting_signal(SIGFPE, SIG_DFL);
-os_non_restarting_signal(SIGILL, SIG_DFL);
-os_non_restarting_signal(SIGBUS, SIG_DFL);
+if (sigsetjmp(local_scan_env, 1) == 0)
+ {
+ had_local_scan_crash = 0;
+ os_non_restarting_signal(SIGSEGV, local_scan_crash_handler);
+ os_non_restarting_signal(SIGFPE, local_scan_crash_handler);
+ os_non_restarting_signal(SIGILL, local_scan_crash_handler);
+ os_non_restarting_signal(SIGBUS, local_scan_crash_handler);
+
+ DEBUG(D_receive) debug_printf("calling local_scan(); timeout=%d\n",
+ local_scan_timeout);
+ local_scan_data = NULL;
+
+ had_local_scan_timeout = 0;
+ os_non_restarting_signal(SIGALRM, local_scan_timeout_handler);
+ if (local_scan_timeout > 0) ALARM(local_scan_timeout);
+ rc = local_scan(data_fd, &local_scan_data);
+ ALARM_CLR(0);
+ os_non_restarting_signal(SIGALRM, sigalrm_handler);
+
+ f.enable_dollar_recipients = FALSE;
+
+ store_pool = POOL_MAIN; /* In case changed */
+ DEBUG(D_receive) debug_printf("local_scan() returned %d %s\n", rc,
+ local_scan_data);
+
+ os_non_restarting_signal(SIGSEGV, SIG_DFL);
+ os_non_restarting_signal(SIGFPE, SIG_DFL);
+ os_non_restarting_signal(SIGILL, SIG_DFL);
+ os_non_restarting_signal(SIGBUS, SIG_DFL);
+ }
+else
+ {
+ if (had_local_scan_crash)
+ {
+ log_write(0, LOG_MAIN|LOG_REJECT, "local_scan() function crashed with "
+ "signal %d - message temporarily rejected (size %d)",
+ had_local_scan_crash, message_size);
+ receive_bomb_out(US"local-scan-error", US"local verification problem");
+ /* Does not return */
+ }
+ if (had_local_scan_timeout)
+ {
+ log_write(0, LOG_MAIN|LOG_REJECT, "local_scan() function timed out - "
+ "message temporarily rejected (size %d)", message_size);
+ receive_bomb_out(US"local-scan-timeout", US"local verification problem");
+ /* Does not return */
+ }
+ }
/* The length check is paranoia against some runaway code, and also because
(for a success return) lines in the spool file are read into big_buffer. */
-if (local_scan_data != NULL)
+if (local_scan_data)
{
int len = Ustrlen(local_scan_data);
if (len > LOCAL_SCAN_MAX_RETURN) len = LOCAL_SCAN_MAX_RETURN;
if (rc == LOCAL_SCAN_ACCEPT_FREEZE)
{
- if (!deliver_freeze) /* ACL might have already frozen */
+ if (!f.deliver_freeze) /* ACL might have already frozen */
{
- deliver_freeze = TRUE;
+ f.deliver_freeze = TRUE;
deliver_frozen_at = time(NULL);
frozen_by = US"local_scan()";
}
}
else if (rc == LOCAL_SCAN_ACCEPT_QUEUE)
{
- if (!queue_only_policy) /* ACL might have already queued */
+ if (!f.queue_only_policy) /* ACL might have already queued */
{
- queue_only_policy = TRUE;
+ f.queue_only_policy = TRUE;
queued_by = US"local_scan()";
}
rc = LOCAL_SCAN_ACCEPT;
if (rc == LOCAL_SCAN_ACCEPT)
{
- if (local_scan_data != NULL)
- {
- uschar *s;
- for (s = local_scan_data; *s != 0; s++) if (*s == '\n') *s = ' ';
- }
- for (i = 0; i < recipients_count; i++)
+ if (local_scan_data)
+ for (uschar * s = local_scan_data; *s != 0; s++) if (*s == '\n') *s = ' ';
+ for (int i = 0; i < recipients_count; i++)
{
recipient_item *r = recipients_list + i;
r->address = rewrite_address_qualify(r->address, TRUE);
- if (r->errors_to != NULL)
+ if (r->errors_to)
r->errors_to = rewrite_address_qualify(r->errors_to, TRUE);
}
- if (recipients_count == 0 && blackholed_by == NULL)
+ if (recipients_count == 0 && !blackholed_by)
blackholed_by = US"local_scan";
}
switch(rc)
{
default:
- log_write(0, LOG_MAIN, "invalid return %d from local_scan(). Temporary "
- "rejection given", rc);
- goto TEMPREJECT;
+ log_write(0, LOG_MAIN, "invalid return %d from local_scan(). Temporary "
+ "rejection given", rc);
+ goto TEMPREJECT;
case LOCAL_SCAN_REJECT_NOLOGHDR:
- BIT_CLEAR(log_selector, log_selector_size, Li_rejected_header);
- /* Fall through */
+ BIT_CLEAR(log_selector, log_selector_size, Li_rejected_header);
+ /* Fall through */
case LOCAL_SCAN_REJECT:
- smtp_code = US"550";
- if (errmsg == NULL) errmsg = US"Administrative prohibition";
- break;
+ smtp_code = US"550";
+ if (!errmsg) errmsg = US"Administrative prohibition";
+ break;
case LOCAL_SCAN_TEMPREJECT_NOLOGHDR:
- BIT_CLEAR(log_selector, log_selector_size, Li_rejected_header);
- /* Fall through */
+ BIT_CLEAR(log_selector, log_selector_size, Li_rejected_header);
+ /* Fall through */
case LOCAL_SCAN_TEMPREJECT:
TEMPREJECT:
- smtp_code = US"451";
- if (errmsg == NULL) errmsg = US"Temporary local problem";
- istemp = US"temporarily ";
- break;
+ smtp_code = US"451";
+ if (!errmsg) errmsg = US"Temporary local problem";
+ istemp = US"temporarily ";
+ break;
}
- g = string_append(g, 2, US"F=",
+ g = string_append(NULL, 2, US"F=",
sender_address[0] == 0 ? US"<>" : sender_address);
g = add_host_info_for_log(g);
string_from_gstring(g), istemp, string_printing(errmsg));
if (smtp_input)
- {
if (!smtp_batched_input)
{
smtp_respond(smtp_code, 3, TRUE, errmsg);
goto TIDYUP; /* Skip to end of function */
}
else
- {
moan_smtp_batch(NULL, "%s %s", smtp_code, errmsg);
/* Does not return */
- }
- }
else
{
- fseek(data_file, (long int)SPOOL_DATA_START_OFFSET, SEEK_SET);
+ fseek(spool_data_file, (long int)SPOOL_DATA_START_OFFSET, SEEK_SET);
give_local_error(ERRMESS_LOCAL_SCAN, errmsg,
- US"message rejected by local scan code: ", error_rc, data_file,
+ US"message rejected by local scan code: ", error_rc, spool_data_file,
header_list);
/* Does not return */
}
signal(SIGTERM, SIG_IGN);
signal(SIGINT, SIG_IGN);
+#endif /* HAVE_LOCAL_SCAN */
/* Ensure the first time flag is set in the newly-received message. */
-deliver_firsttime = TRUE;
+f.deliver_firsttime = TRUE;
#ifdef EXPERIMENTAL_BRIGHTMAIL
if (bmi_run == 1)
if (mua_wrapper)
{
- deliver_freeze = FALSE;
- queue_only_policy = FALSE;
+ f.deliver_freeze = FALSE;
+ f.queue_only_policy = FALSE;
}
/* Keep the data file open until we have written the header file, in order to
don't write the header file, and we unlink the data file. If writing the header
file fails, we have failed to accept this message. */
-if (host_checking || blackholed_by != NULL)
+if (host_checking || blackholed_by)
{
- header_line *h;
Uunlink(spool_name);
msg_size = 0; /* Compute size for log line */
- for (h = header_list; h != NULL; h = h->next)
+ for (header_line * h = header_list; h; h = h->next)
if (h->type != '*') msg_size += h->slen;
}
}
else
{
- fseek(data_file, (long int)SPOOL_DATA_START_OFFSET, SEEK_SET);
- give_local_error(ERRMESS_IOERR, errmsg, US"", error_rc, data_file,
+ fseek(spool_data_file, (long int)SPOOL_DATA_START_OFFSET, SEEK_SET);
+ give_local_error(ERRMESS_IOERR, errmsg, US"", error_rc, spool_data_file,
header_list);
/* Does not return */
}
receive_messagecount++;
-/* In SMTP sessions we may receive several in one connection. After each one,
-we wait for the clock to tick at the level of message-id granularity. This is
-so that the combination of time+pid is unique, even on systems where the pid
-can be re-used within our time interval. We can't shorten the interval without
-re-designing the message-id. See comments above where the message id is
-created. This is Something For The Future. */
-
-message_id_tv.tv_usec = (message_id_tv.tv_usec/id_resolution) * id_resolution;
-exim_wait_tick(&message_id_tv, id_resolution);
-
/* Add data size to written header size. We do not count the initial file name
that is in the file, but we do add one extra for the notional blank line that
precedes the data. This total differs from message_size in that it include the
added Received: header and any other headers that got created locally. */
-fflush(data_file);
+if (fflush(spool_data_file))
+ {
+ errmsg = string_sprintf("Spool write error: %s", strerror(errno));
+ log_write(0, LOG_MAIN, "%s\n", errmsg);
+ Uunlink(spool_name); /* Lose the data file */
+
+ if (smtp_input)
+ {
+ smtp_reply = US"451 Error in writing spool file";
+ message_id[0] = 0; /* Indicate no message accepted */
+ goto TIDYUP;
+ }
+ else
+ {
+ fseek(spool_data_file, (long int)SPOOL_DATA_START_OFFSET, SEEK_SET);
+ give_local_error(ERRMESS_IOERR, errmsg, US"", error_rc, spool_data_file,
+ header_list);
+ /* Does not return */
+ }
+ }
fstat(data_fd, &statbuf);
msg_size += statbuf.st_size - SPOOL_DATA_START_OFFSET + 1;
/* Generate a "message received" log entry. We do this by building up a dynamic
-string as required. Since we commonly want to add two items at a time, use a
-macro to simplify the coding. We log the arrival of a new message while the
+string as required. We log the arrival of a new message while the
file is still locked, just in case the machine is *really* fast, and delivers
it first! Include any message id that is in the message - since the syntax of a
message id is actually an addr-spec, we can use the parse routine to canonicalize
it. */
+rcvd_log_reset_point = store_mark();
g = string_get(256);
g = string_append(g, 2,
g = add_host_info_for_log(g);
-#ifdef SUPPORT_TLS
+#ifndef DISABLE_TLS
if (LOGGING(tls_cipher) && tls_in.cipher)
+ {
g = string_append(g, 2, US" X=", tls_in.cipher);
+# ifdef EXPERIMENTAL_TLS_RESUME
+ if (LOGGING(tls_resumption) && tls_in.resumption & RESUME_USED)
+ g = string_catn(g, US"*", 1);
+# endif
+ }
if (LOGGING(tls_certificate_verified) && tls_in.cipher)
g = string_append(g, 2, US" CV=", tls_in.certificate_verified ? "yes":"no");
if (LOGGING(tls_peerdn) && tls_in.peerdn)
if (chunking_state > CHUNKING_OFFERED)
g = string_catn(g, US" K", 2);
-sprintf(CS big_buffer, "%d", msg_size);
-g = string_append(g, 2, US" S=", big_buffer);
+g = string_fmt_append(g, " S=%d", msg_size);
/* log 8BITMIME mode announced in MAIL_FROM
0 ... no BODY= used
7 ... 7BIT
8 ... 8BITMIME */
if (LOGGING(8bitmime))
- {
- sprintf(CS big_buffer, "%d", body_8bitmime);
- g = string_append(g, 2, US" M8S=", big_buffer);
- }
+ g = string_fmt_append(g, " M8S=%d", body_8bitmime);
+
+#ifndef DISABLE_DKIM
+if (LOGGING(dkim) && dkim_verify_overall)
+ g = string_append(g, 2, US" DKIM=", dkim_verify_overall);
+# ifdef EXPERIMENTAL_ARC
+if (LOGGING(dkim) && arc_state && Ustrcmp(arc_state, "pass") == 0)
+ g = string_catn(g, US" ARC", 4);
+# endif
+#endif
+
+if (LOGGING(receive_time))
+ g = string_append(g, 2, US" RT=", string_timediff(&received_time_taken));
if (*queue_name)
g = string_append(g, 2, US" Q=", queue_name);
Therefore, make sure we use a printing-characters only version for the log.
Also, allow for domain literals in the message id. */
-if (msgid_header)
+if ( LOGGING(msg_id) && msgid_header
+ && (LOGGING(msg_id_created) || !msgid_header_newly_created)
+ )
{
- uschar *old_id;
+ uschar * old_id;
BOOL save_allow_domain_literals = allow_domain_literals;
allow_domain_literals = TRUE;
old_id = parse_extract_address(Ustrchr(msgid_header->text, ':') + 1,
&errmsg, &start, &end, &domain, FALSE);
allow_domain_literals = save_allow_domain_literals;
- if (old_id != NULL)
- g = string_append(g, 2, US" id=", string_printing(old_id));
+ if (old_id)
+ g = string_append(g, 2,
+ msgid_header_newly_created ? US" id*=" : US" id=",
+ string_printing(old_id));
}
/* If subject logging is turned on, create suitable printing-character
text. By expanding $h_subject: we make use of the MIME decoding. */
-if (LOGGING(subject) && subject_header != NULL)
+if (LOGGING(subject) && subject_header)
{
- int i;
uschar *p = big_buffer;
uschar *ss = expand_string(US"$h_subject:");
a C-like string, and turn any non-printers into escape sequences. */
*p++ = '\"';
- if (*ss != 0) for (i = 0; i < 100 && ss[i] != 0; i++)
+ if (*ss != 0) for (int i = 0; i < 100 && ss[i] != 0; i++)
{
if (ss[i] == '\"' || ss[i] == '\\') *p++ = '\\';
*p++ = ss[i];
if (message_logs && !blackholed_by)
{
int fd;
+ uschar * m_name = spool_fname(US"msglog", message_subdir, message_id, US"");
- spool_name = spool_fname(US"msglog", message_subdir, message_id, US"");
-
- if ( (fd = Uopen(spool_name, O_WRONLY|O_APPEND|O_CREAT, SPOOL_MODE)) < 0
+ if ( (fd = Uopen(m_name, O_WRONLY|O_APPEND|O_CREAT, SPOOL_MODE)) < 0
&& errno == ENOENT
)
{
(void)directory_make(spool_directory,
spool_sname(US"msglog", message_subdir),
MSGLOG_DIRECTORY_MODE, TRUE);
- fd = Uopen(spool_name, O_WRONLY|O_APPEND|O_CREAT, SPOOL_MODE);
+ fd = Uopen(m_name, O_WRONLY|O_APPEND|O_CREAT, SPOOL_MODE);
}
if (fd < 0)
log_write(0, LOG_MAIN|LOG_PANIC, "Couldn't open message log %s: %s",
- spool_name, strerror(errno));
+ m_name, strerror(errno));
else
{
FILE *message_log = fdopen(fd, "a");
- if (message_log == NULL)
+ if (!message_log)
{
log_write(0, LOG_MAIN|LOG_PANIC, "Couldn't fdopen message log %s: %s",
- spool_name, strerror(errno));
+ m_name, strerror(errno));
(void)close(fd);
}
else
{
uschar *now = tod_stamp(tod_log);
fprintf(message_log, "%s Received from %s\n", now, g->s+3);
- if (deliver_freeze) fprintf(message_log, "%s frozen by %s\n", now,
+ if (f.deliver_freeze) fprintf(message_log, "%s frozen by %s\n", now,
frozen_by);
- if (queue_only_policy) fprintf(message_log,
+ if (f.queue_only_policy) fprintf(message_log,
"%s no immediate delivery: queued%s%s by %s\n", now,
*queue_name ? " in " : "", *queue_name ? CS queue_name : "",
queued_by);
arrival, and outputting an SMTP response. While writing to the log, set a flag
to cause a call to receive_bomb_out() if the log cannot be opened. */
-receive_call_bombout = TRUE;
+f.receive_call_bombout = TRUE;
/* Before sending an SMTP response in a TCP/IP session, we check to see if the
connection has gone away. This can only be done if there is no unconsumed input
connection will vanish between the time of this test and the sending of the
response, but the chance of this happening should be small. */
-if (smtp_input && sender_host_address != NULL && !sender_host_notsocket &&
+if (smtp_input && sender_host_address && !f.sender_host_notsocket &&
!receive_smtp_buffered())
{
struct timeval tv;
/* Delete the files for this aborted message. */
- Uunlink(spool_fname(US"input", message_subdir, message_id, US"-D"));
+ Uunlink(spool_name);
Uunlink(spool_fname(US"input", message_subdir, message_id, US"-H"));
Uunlink(spool_fname(US"msglog", message_subdir, message_id, US""));
XXX We do not handle queue-only, freezing, or blackholes.
*/
-if(cutthrough.fd >= 0 && cutthrough.delivery)
+if(cutthrough.cctx.sock >= 0 && cutthrough.delivery)
{
uschar * msg = cutthrough_finaldot(); /* Ask the target system to accept the message */
/* Logging was done in finaldot() */
case '4': /* Temp-reject. Keep spoolfiles and accept, unless defer-pass mode.
... for which, pass back the exact error */
- if (cutthrough.defer_pass) smtp_reply = string_copy_malloc(msg);
- /*FALLTRHOUGH*/
+ if (cutthrough.defer_pass) smtp_reply = string_copy_perm(msg, TRUE);
+ cutthrough_done = TMP_REJ; /* Avoid the usual immediate delivery attempt */
+ break; /* message_id needed for SMTP accept below */
default: /* Unknown response, or error. Treat as temp-reject. */
+ if (cutthrough.defer_pass) smtp_reply = US"450 Onward transmission not accepted";
cutthrough_done = TMP_REJ; /* Avoid the usual immediate delivery attempt */
break; /* message_id needed for SMTP accept below */
case '5': /* Perm-reject. Do the same to the source. Dump any spoolfiles */
- smtp_reply = string_copy_malloc(msg); /* Pass on the exact error */
+ smtp_reply = string_copy_perm(msg, TRUE); /* Pass on the exact error */
cutthrough_done = PERM_REJ;
break;
}
#endif
{
log_write(0, LOG_MAIN |
- (LOGGING(received_recipients)? LOG_RECIPIENTS : 0) |
- (LOGGING(received_sender)? LOG_SENDER : 0),
+ (LOGGING(received_recipients) ? LOG_RECIPIENTS : 0) |
+ (LOGGING(received_sender) ? LOG_SENDER : 0),
"%s", g->s);
/* Log any control actions taken by an ACL or local_scan(). */
- if (deliver_freeze) log_write(0, LOG_MAIN, "frozen by %s", frozen_by);
- if (queue_only_policy) log_write(L_delay_delivery, LOG_MAIN,
+ if (f.deliver_freeze) log_write(0, LOG_MAIN, "frozen by %s", frozen_by);
+ if (f.queue_only_policy) log_write(L_delay_delivery, LOG_MAIN,
"no immediate delivery: queued%s%s by %s",
- *queue_name ? " in " : "", *queue_name ? CS queue_name : "",
+ *queue_name ? " in " : "", *queue_name ? CS queue_name : "",
queued_by);
}
-receive_call_bombout = FALSE;
+f.receive_call_bombout = FALSE;
-store_reset(g); /* The store for the main log message can be reused */
+/* The store for the main log message can be reused */
+rcvd_log_reset_point = store_reset(rcvd_log_reset_point);
/* If the message is frozen, and freeze_tell is set, do the telling. */
-if (deliver_freeze && freeze_tell != NULL && freeze_tell[0] != 0)
- {
+if (f.deliver_freeze && freeze_tell && freeze_tell[0])
moan_tell_someone(freeze_tell, NULL, US"Message frozen on arrival",
"Message %s was frozen on arrival by %s.\nThe sender is <%s>.\n",
message_id, frozen_by, sender_address);
- }
/* Either a message has been successfully received and written to the two spool
files, or an error in writing the spool has occurred for an SMTP message, or
-an SMTP message has been rejected for policy reasons. (For a non-SMTP message
-we will have already given up because there's no point in carrying on!) In
-either event, we must now close (and thereby unlock) the data file. In the
-successful case, this leaves the message on the spool, ready for delivery. In
-the error case, the spool file will be deleted. Then tidy up store, interact
-with an SMTP call if necessary, and return.
+an SMTP message has been rejected for policy reasons, or a message was passed on
+by cutthrough delivery. (For a non-SMTP message we will have already given up
+because there's no point in carrying on!) For non-cutthrough we must now close
+(and thereby unlock) the data file. In the successful case, this leaves the
+message on the spool, ready for delivery. In the error case, the spool file will
+be deleted. Then tidy up store, interact with an SMTP call if necessary, and
+return.
+
+For cutthrough we hold the data file locked until we have deleted it, otherwise
+a queue-runner could grab it in the window.
A fflush() was done earlier in the expectation that any write errors on the
data file will be flushed(!) out thereby. Nevertheless, it is theoretically
possible for fclose() to fail - but what to do? What has happened to the lock
-if this happens? */
+if this happens? We can at least log it; if it is observed on some platform
+then we can think about properly declaring the message not-received. */
TIDYUP:
-process_info[process_info_len] = 0; /* Remove message id */
-if (data_file != NULL) (void)fclose(data_file); /* Frees the lock */
+/* In SMTP sessions we may receive several messages in one connection. After
+each one, we wait for the clock to tick at the level of message-id granularity.
+This is so that the combination of time+pid is unique, even on systems where the
+pid can be re-used within our time interval. We can't shorten the interval
+without re-designing the message-id. See comments above where the message id is
+created. This is Something For The Future.
+Do this wait any time we have created a message-id, even if we rejected the
+message. This gives unique IDs for logging done by ACLs. */
+
+if (id_resolution != 0)
+ {
+ message_id_tv.tv_usec = (message_id_tv.tv_usec/id_resolution) * id_resolution;
+ exim_wait_tick(&message_id_tv, id_resolution);
+ id_resolution = 0;
+ }
+
+
+process_info[process_info_len] = 0; /* Remove message id */
+if (spool_data_file && cutthrough_done == NOT_TRIED)
+ {
+ if (fclose(spool_data_file)) /* Frees the lock */
+ log_write(0, LOG_MAIN|LOG_PANIC,
+ "spoolfile error on close: %s", strerror(errno));
+ spool_data_file = NULL;
+ }
/* Now reset signal handlers to their defaults */
/* smtp_reply is set non-empty */
else if (smtp_reply[0] != 0)
- if (fake_response != OK && (smtp_reply[0] == '2'))
- smtp_respond((fake_response == DEFER)? US"450" : US"550", 3, TRUE,
+ if (fake_response != OK && smtp_reply[0] == '2')
+ smtp_respond(fake_response == DEFER ? US"450" : US"550", 3, TRUE,
fake_response_text);
else
smtp_printf("%.1024s\r\n", FALSE, smtp_reply);
log_write(0, LOG_MAIN, "Completed");/* Delivery was done */
case PERM_REJ:
/* Delete spool files */
- Uunlink(spool_fname(US"input", message_subdir, message_id, US"-D"));
+ Uunlink(spool_name);
Uunlink(spool_fname(US"input", message_subdir, message_id, US"-H"));
Uunlink(spool_fname(US"msglog", message_subdir, message_id, US""));
break;
case TMP_REJ:
if (cutthrough.defer_pass)
{
- Uunlink(spool_fname(US"input", message_subdir, message_id, US"-D"));
+ Uunlink(spool_name);
Uunlink(spool_fname(US"input", message_subdir, message_id, US"-H"));
Uunlink(spool_fname(US"msglog", message_subdir, message_id, US""));
}
}
if (cutthrough_done != NOT_TRIED)
{
+ if (spool_data_file)
+ {
+ (void) fclose(spool_data_file); /* Frees the lock; do not care if error */
+ spool_data_file = NULL;
+ }
message_id[0] = 0; /* Prevent a delivery from starting */
cutthrough.delivery = cutthrough.callout_hold_only = FALSE;
cutthrough.defer_pass = FALSE;
if (blackholed_by)
{
- const uschar *detail = local_scan_data
- ? string_printing(local_scan_data)
- : string_sprintf("(%s discarded recipients)", blackholed_by);
+ const uschar *detail =
+#ifdef HAVE_LOCAL_SCAN
+ local_scan_data ? string_printing(local_scan_data) :
+#endif
+ string_sprintf("(%s discarded recipients)", blackholed_by);
log_write(0, LOG_MAIN, "=> blackhole %s%s", detail, blackhole_log_msg);
log_write(0, LOG_MAIN, "Completed");
message_id[0] = 0;
projects / exim.git / blobdiff