* Exim - an Internet mail transport agent *
*************************************************/
-/* Copyright (c) University of Cambridge 1995 - 2016 */
+/* Copyright (c) University of Cambridge 1995 - 2018 */
/* 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;
* 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
/*************************************************
changing the pointer variables.) */
int
-stdin_getc(void)
+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 (newsender == NULL || untrusted_set_sender == NULL) return FALSE;
-qnewsender = (Ustrchr(newsender, '@') != NULL)?
- newsender : string_sprintf("%s@%s", newsender, qualify_domain_sender);
-return
- match_address_list(qnewsender, TRUE, TRUE, CUSS &untrusted_set_sender, NULL, -1,
- 0, NULL) == OK;
+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);
+return match_address_list_basic(qnewsender, CUSS &untrusted_set_sender, 0) == OK;
}
All values are -1 if the STATFS functions are not available.
*/
-int
+int_eximarith_t
receive_statvfs(BOOL isspool, int *inodeptr)
{
#ifdef HAVE_STATFS
struct STATVFS statbuf;
+struct stat dummy;
uschar *path;
uschar *name;
uschar buffer[1024];
memset(&statbuf, 0, sizeof(statbuf));
if (STATVFS(CS path, &statbuf) != 0)
- {
- log_write(0, LOG_MAIN|LOG_PANIC, "cannot accept message: failed to stat "
- "%s directory %s: %s", name, spool_directory, strerror(errno));
- smtp_closedown(US"spool or log directory problem");
- exim_exit(EXIT_FAILURE);
- }
+ if (stat(CS path, &dummy) == -1 && errno == ENOENT)
+ { /* Can happen on first run after installation */
+ *inodeptr = -1;
+ return -1;
+ }
+ else
+ {
+ 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);
+ }
*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. */
-#else
*inodeptr = -1;
return -1;
#endif
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))
{
- 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);
+exim_exit(EXIT_FAILURE, NULL);
}
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_max = recipients_list_max ? 2*recipients_list_max : 50;
recipients_list = store_get(recipients_list_max * sizeof(recipient_item));
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';
- for (; (ch = (receive_getc)()) != 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)()) != EOF)
+while (log_close_chk(), (ch = (receive_getc)(GETC_BUFFER_UNLIMITED)) != EOF)
{
if (ch == 0) body_zerocount++;
switch (ch_state)
int ch;
int linelength = 0;
-while ((ch = (receive_getc)()) != EOF)
+while ((ch = (receive_getc)(GETC_BUFFER_UNLIMITED)) != EOF)
{
if (ch == 0) body_zerocount++;
switch (ch_state)
{
message_size++;
if (fout != NULL && fputc('\n', fout) == EOF) return END_WERROR;
- (void) cutthrough_put_nl();
+ cutthrough_data_put_nl();
if (ch != '\r') ch_state = 1; else continue;
}
break;
if (ch == '.')
{
uschar c= ch;
- (void) cutthrough_puts(&c, 1);
+ cutthrough_data_puts(&c, 1);
}
ch_state = 1;
break;
message_size++;
body_linecount++;
if (fout != NULL && fputc('\n', fout) == EOF) return END_WERROR;
- (void) cutthrough_put_nl();
+ cutthrough_data_put_nl();
if (ch == '\r')
{
ch_state = 2;
if (message_size > thismessage_size_limit) return END_SIZE;
}
if(ch == '\n')
- (void) cutthrough_put_nl();
+ cutthrough_data_put_nl();
else
{
uschar c = ch;
- (void) cutthrough_puts(&c, 1);
+ cutthrough_data_puts(&c, 1);
}
}
/* Variant of the above read_message_data_smtp() specialised for RFC 3030
-CHUNKING. We assume that the incoming has proper CRLF, so only have to scan
-for and strip CR. On the downside there are more protocol reasons to stop.
+CHUNKING. Accept input lines separated by either CRLF or CR or LF and write
+LF-delimited spoolfile. Until we have wireformat spoolfiles, we need the
+body_linecount accounting for proper re-expansion for the wire, so use
+a cut-down version of the state-machine above; we don't need to do leading-dot
+detection and unstuffing.
Arguments:
- fout a FILE to which to write the message; NULL if skipping
+ fout a FILE to which to write the message; NULL if skipping;
+ must be open for both writing and reading.
Returns: One of the END_xxx values indicating why it stopped reading
*/
static int
read_message_bdat_smtp(FILE *fout)
{
+int linelength = 0, ch;
+enum CH_STATE ch_state = LF_SEEN;
+BOOL fix_nl = FALSE;
+
+for(;;)
+ {
+ switch ((ch = bdat_getc(GETC_BUFFER_UNLIMITED)))
+ {
+ case EOF: return END_EOF;
+ case ERR: return END_PROTOCOL;
+ case EOD:
+ /* Nothing to get from the sender anymore. We check the last
+ character written to the spool.
+
+ RFC 3030 states, that BDAT chunks are normal text, terminated by CRLF.
+ If we would be strict, we would refuse such broken messages.
+ But we are liberal, so we fix it. It would be easy just to append
+ the "\n" to the spool.
+
+ But there are some more things (line counting, message size calculation and such),
+ that would need to be duplicated here. So we simply do some ungetc
+ trickery.
+ */
+ if (fout)
+ {
+ if (fseek(fout, -1, SEEK_CUR) < 0) return END_PROTOCOL;
+ if (fgetc(fout) == '\n') return END_DOT;
+ }
+
+ if (linelength == -1) /* \r already seen (see below) */
+ {
+ DEBUG(D_receive) debug_printf("Add missing LF\n");
+ bdat_ungetc('\n');
+ continue;
+ }
+ DEBUG(D_receive) debug_printf("Add missing CRLF\n");
+ bdat_ungetc('\r'); /* not even \r was seen */
+ fix_nl = TRUE;
+
+ continue;
+ case '\0': body_zerocount++; break;
+ }
+ switch (ch_state)
+ {
+ case LF_SEEN: /* After LF or CRLF */
+ ch_state = MID_LINE;
+ /* fall through to handle as normal uschar. */
+
+ case MID_LINE: /* Mid-line state */
+ if (ch == '\n')
+ {
+ ch_state = LF_SEEN;
+ body_linecount++;
+ if (linelength > max_received_linelength)
+ max_received_linelength = linelength;
+ linelength = -1;
+ }
+ else if (ch == '\r')
+ {
+ ch_state = CR_SEEN;
+ if (fix_nl) bdat_ungetc('\n');
+ continue; /* don't write CR */
+ }
+ break;
+
+ case CR_SEEN: /* After (unwritten) CR */
+ body_linecount++;
+ if (linelength > max_received_linelength)
+ max_received_linelength = linelength;
+ linelength = -1;
+ if (ch == '\n')
+ ch_state = LF_SEEN;
+ else
+ {
+ message_size++;
+ if (fout && fputc('\n', fout) == EOF) return END_WERROR;
+ cutthrough_data_put_nl();
+ if (ch == '\r') continue; /* don't write CR */
+ ch_state = MID_LINE;
+ }
+ break;
+ }
+
+ /* Add the character to the spool file, unless skipping */
+
+ message_size++;
+ linelength++;
+ if (fout)
+ {
+ if (fputc(ch, fout) == EOF) return END_WERROR;
+ if (message_size > thismessage_size_limit) return END_SIZE;
+ }
+ if(ch == '\n')
+ cutthrough_data_put_nl();
+ else
+ {
+ uschar c = ch;
+ cutthrough_data_puts(&c, 1);
+ }
+ }
+/*NOTREACHED*/
+}
+
+static int
+read_message_bdat_smtp_wire(FILE *fout)
+{
int ch;
-int linelength = 0;
-for (;;) switch (ch = bdat_getc())
+/* Remember that this message uses wireformat. */
+
+DEBUG(D_receive) debug_printf("CHUNKING: %s\n",
+ fout ? "writing spoolfile in wire format" : "flushing input");
+f.spool_file_wireformat = TRUE;
+
+for (;;)
{
- case EOF: return END_EOF;
- case EOD: return END_DOT;
- case ERR: return END_PROTOCOL;
+ if (chunking_data_left > 0)
+ {
+ unsigned len = MAX(chunking_data_left, thismessage_size_limit - message_size + 1);
+ uschar * buf = bdat_getbuf(&len);
- case '\r':
- body_linecount++;
- if (linelength > max_received_linelength)
- max_received_linelength = linelength;
- linelength = -1;
- break;
+ if (!buf) return END_EOF;
+ message_size += len;
+ if (fout && fwrite(buf, len, 1, fout) != 1) return END_WERROR;
+ }
+ else switch (ch = bdat_getc(GETC_BUFFER_UNLIMITED))
+ {
+ case EOF: return END_EOF;
+ case EOD: return END_DOT;
+ case ERR: return END_PROTOCOL;
- case 0:
- body_zerocount++;
- /*FALLTHROUGH*/
- default:
- message_size++;
- linelength++;
- if (fout)
- {
- if (fputc(ch, fout) == EOF) return END_WERROR;
- if (message_size > thismessage_size_limit) return END_SIZE;
- }
-#ifdef notyet
- if(ch == '\n')
- (void) cutthrough_put_nl();
- else
- {
- uschar c = ch;
- (void) cutthrough_puts(&c, 1);
- }
-#endif
- break;
+ default:
+ message_size++;
+ /*XXX not done:
+ linelength
+ max_received_linelength
+ body_linecount
+ body_zerocount
+ */
+ if (fout && fputc(ch, fout) == EOF) return END_WERROR;
+ break;
+ }
+ if (message_size > thismessage_size_limit) return END_SIZE;
}
/*NOTREACHED*/
}
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);
}
{
log_write(L_lost_incoming_connection | L_smtp_connection, LOG_MAIN,
"%s lost while reading message data%s", smtp_get_connection_info(), s);
+smtp_notquit_exit(US"connection-lost", NULL, NULL);
return US"421 Lost incoming connection";
}
else
fprintf(stderr, "exim: %s%s\n", text2, text1); /* Sic */
(void)fclose(f);
-exim_exit(error_rc);
+exim_exit(error_rc, US"");
}
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 && (acl_removed_headers || acl_added_headers))
+ 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"
" will not take effect on cutthrough deliveries");
}
}
-if (acl_removed_headers != NULL)
+if (acl_removed_headers)
{
- DEBUG(D_receive|D_acl) debug_printf(">>Headers removed by %s ACL:\n", acl_name);
+ DEBUG(D_receive|D_acl) debug_printf_indent(">>Headers removed by %s ACL:\n", acl_name);
- for (h = header_list; h != NULL; 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 (header_testname(h, s, Ustrlen(s), FALSE))
{
h->type = htype_old;
- DEBUG(D_receive|D_acl) debug_printf(" %s", h->text);
+ DEBUG(D_receive|D_acl) debug_printf_indent(" %s", h->text);
}
}
acl_removed_headers = NULL;
- DEBUG(D_receive|D_acl) debug_printf(">>\n");
+ DEBUG(D_receive|D_acl) debug_printf_indent(">>\n");
}
-if (acl_added_headers == NULL) return;
-DEBUG(D_receive|D_acl) debug_printf(">>Headers added by %s ACL:\n", acl_name);
+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 != NULL; 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(" (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(" (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(" (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(" %s", header_last->text);
+ DEBUG(D_receive|D_acl) debug_printf("%s", h->text);
}
acl_added_headers = NULL;
-DEBUG(D_receive|D_acl) debug_printf(">>\n");
+DEBUG(D_receive|D_acl) debug_printf_indent(">>\n");
}
Arguments:
s the dynamic string
- sizeptr points to the size variable
- ptrptr points to the pointer variable
Returns: the extended string
*/
-static uschar *
-add_host_info_for_log(uschar * s, int * sizeptr, int * ptrptr)
+static gstring *
+add_host_info_for_log(gstring * g)
{
if (sender_fullhost)
{
if (LOGGING(dnssec) && sender_host_dnssec) /*XXX sender_helo_dnssec? */
- s = string_cat(s, sizeptr, ptrptr, US" DS");
- s = string_append(s, sizeptr, ptrptr, 2, US" H=", sender_fullhost);
- if (LOGGING(incoming_interface) && interface_address != NULL)
- {
- s = string_cat(s, sizeptr, ptrptr,
- string_sprintf(" I=[%s]:%d", interface_address, interface_port));
- }
+ g = string_catn(g, US" DS", 3);
+ g = string_append(g, 2, US" H=", sender_fullhost);
+ if (LOGGING(incoming_interface) && interface_address)
+ g = string_fmt_append(g, " I=[%s]:%d", interface_address, interface_port);
+ }
+if (f.tcp_in_fastopen && !f.tcp_in_fastopen_logged)
+ {
+ 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);
+#ifdef EXPERIMENTAL_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);
}
-if (sender_ident != NULL)
- s = string_append(s, sizeptr, ptrptr, 2, US" U=", sender_ident);
-if (received_protocol != NULL)
- s = string_append(s, sizeptr, ptrptr, 2, US" P=", received_protocol);
-return s;
+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 */
-my_headerlist = header_list;
-while (my_headerlist != NULL)
- {
- /* skip deleted headers */
- if (my_headerlist->type == '*')
- {
- my_headerlist = my_headerlist->next;
- continue;
- }
- if (strncmpic(my_headerlist->text, US"Content-Type:", 13) == 0)
+
+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
+ )
{
DEBUG(D_receive) debug_printf("Found Content-Type: header - executing acl_smtp_mime.\n");
goto DO_MIME_ACL;
}
- my_headerlist = my_headerlist->next;
- }
DEBUG(D_receive) debug_printf("No Content-Type: header - presumably not a MIME message.\n");
return TRUE;
DO_MIME_ACL:
+
/* 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, &mbox_filename)))
+ { /* error while spooling */
log_write(0, LOG_MAIN|LOG_PANIC,
"acl_smtp_mime: error while creating mbox spool file, message temporarily rejected.");
Uunlink(spool_name);
message_id[0] = 0; /* Indicate no message accepted */
*smtp_reply_ptr = US""; /* Indicate reply already sent */
return FALSE; /* Indicate skip to end of receive function */
-};
+ }
mime_is_rfc822 = 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 temp_path[1024];
+ uschar * scandir = string_copyn(mbox_filename,
+ Ustrrchr(mbox_filename, '/') - mbox_filename);
struct dirent * entry;
DIR * tempdir;
- (void) string_format(temp_path, sizeof(temp_path), "%s/scan/%s",
- spool_directory, message_id);
-
- tempdir = opendir(CS temp_path);
- for (;;)
- {
- if (!(entry = readdir(tempdir)))
- break;
+ for (tempdir = opendir(CS 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/scan/%s/%s", spool_directory, message_id, entry->d_name);
- 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, size, sptr;
-int id_resolution;
+int start, end, domain;
+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 *frozen_by = NULL;
uschar *queued_by = NULL;
-uschar *errmsg, *s;
+uschar *errmsg;
+gstring * g;
struct stat statbuf;
/* Final message to give to SMTP caller, and messages from ACLs */
/* Working header pointers */
-header_line *h, *next;
+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;
+BOOL msgid_header_newly_created = FALSE;
#ifdef EXPERIMENTAL_DMARC
int dmarc_up = 0;
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. */
cutthrough delivery with the no-spool option. It shouldn't be possible
to set up the combination, but just in case kill any ongoing connection. */
if (extract_recip || !smtp_input)
- cancel_cutthrough_connection("not smtp input");
+ cancel_cutthrough_connection(TRUE, US"not smtp input");
/* Initialize the chain of headers by setting up a place-holder for Received:
header. Temporarily mark it as "old", i.e. not to be used. We keep header_last
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;
max_received_linelength = 0;
#ifndef DISABLE_DKIM
-/* Call into DKIM to set up the context. */
-if (smtp_input && !smtp_batched_input && !dkim_disable_verify) dkim_exim_verify_init();
+/* Call into DKIM to set up the context. In CHUNKING mode
+we clear the dot-stuffing flag */
+if (smtp_input && !smtp_batched_input && !f.dkim_disable_verify)
+ dkim_exim_verify_init(chunking_state <= CHUNKING_OFFERED);
#endif
#ifdef EXPERIMENTAL_DMARC
second, and for that we use the global variable received_time. This is for
things like ultimate message timeouts. */
-received_time = message_id_tv.tv_sec;
+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);
for (;;)
{
- int ch = (receive_getc)();
+ int ch = (receive_getc)(GETC_BUFFER_UNLIMITED);
/* If we hit EOF on a SMTP connection, it's an error, since incoming
SMTP must have a correct "." terminator. */
(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;
- }
+ next->text = store_newblock(next->text, 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)();
+ ch = (receive_getc)(GETC_BUFFER_UNLIMITED);
if (ch == '\r')
{
- ch = (receive_getc)();
+ ch = (receive_getc)(GETC_BUFFER_UNLIMITED);
if (ch != '\n')
{
receive_ungetc(ch);
if (ch == '\r')
{
- ch = (receive_getc)();
+ ch = (receive_getc)(GETC_BUFFER_UNLIMITED);
if (ch == '\n')
{
if (first_line_ended_crlf == TRUE_UNSET) first_line_ended_crlf = TRUE;
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 (ch != EOF)
{
- int nextch = (receive_getc)();
+ int nextch = (receive_getc)(GETC_BUFFER_UNLIMITED);
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 */
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. */
}
}
+ /* Reject CHUNKING messages that do not CRLF their first header line */
+
+ if (!first_line_ended_crlf && chunking_state > CHUNKING_OFFERED)
+ {
+ log_write(L_size_reject, LOG_MAIN|LOG_REJECT, "rejected from <%s>%s%s%s%s: "
+ "Non-CRLF-terminated header, under CHUNKING: message abandoned",
+ sender_address,
+ sender_fullhost ? " H=" : "", sender_fullhost ? sender_fullhost : US"",
+ sender_ident ? " U=" : "", sender_ident ? sender_ident : US"");
+ smtp_printf("552 Message header not CRLF terminated\r\n", FALSE);
+ bdat_flush_data();
+ smtp_reply = US"";
+ goto TIDYUP; /* Skip to end of function */
+ }
+
/* The line has been handled. If we have hit EOF, break out of the loop,
indicating no pending data line. */
DEBUG(D_receive)
{
debug_printf(">>Headers received:\n");
- for (h = header_list->next; h != NULL; 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 != NULL; 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 != NULL; 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
of the header. */
pp = recipient = store_get(ss - s + 1);
- for (p = s; p < ss; p++) if (*p != '\n') *pp++ = *p;
+ for (uschar * p = s; p < ss; p++) if (*p != '\n') *pp++ = *p;
*pp = 0;
#ifdef SUPPORT_I18N
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
NOTE: If ever the format of message ids is changed, the regular expression for
checking that a string is in this format must be updated in a corresponding
way. It appears in the initializing code in exim.c. The macro MESSAGE_ID_LENGTH
-must also be changed to reflect the correct string length. Then, of course,
-other programs that rely on the message id format will need updating too. */
+must also be changed to reflect the correct string length. The queue-sort code
+needs to know the layout. Then, of course, other programs that rely on the
+message id format will need updating too. */
Ustrncpy(message_id, string_base62((long int)(message_id_tv.tv_sec)), 6);
message_id[6] = '-';
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);
}
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++)
+ 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;
+ if (at) *at = 0;
from_address += route_check_prefix(from_address, local_from_prefix);
slen = route_check_suffix(from_address, local_from_suffix);
if (slen > 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 != NULL; 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);
- if (newh != NULL) h = newh;
+ if (newh) h = newh;
}
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");
}
Could we do onward CHUNKING given inbound CHUNKING?
*/
if (chunking_state > CHUNKING_OFFERED)
- cancel_cutthrough_connection("chunking active");
+ cancel_cutthrough_connection(FALSE, US"chunking active");
/* Cutthrough delivery:
We have to create the Received header now rather than at the end of reception,
so the timestamp behaviour is a change to the normal case.
-XXX Ensure this gets documented XXX.
Having created it, send the headers to the destination. */
-if (cutthrough.fd >= 0)
+
+if (cutthrough.cctx.sock >= 0 && cutthrough.delivery)
{
if (received_count > received_headers_max)
{
- cancel_cutthrough_connection("too many headers");
+ cancel_cutthrough_connection(TRUE, US"too many headers");
if (smtp_input) receive_swallow_smtp(); /* Swallow incoming SMTP */
log_write(0, LOG_MAIN|LOG_REJECT, "rejected from <%s>%s%s%s%s: "
"Too many \"Received\" headers",
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_id[0] = 0; /* Indicate no message accepted */
smtp_reply = US"550 Too many \"Received\" headers - suspected mail loop";
goto TIDYUP; /* Skip to end of function */
/* 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_bdat_smtp(data_file)
- : read_message_data_smtp(data_file);
+ message_ended = chunking_state <= CHUNKING_OFFERED
+ ? read_message_data_smtp(spool_data_file)
+ : spool_wireformat
+ ? 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;
if (smtp_input)
{
Uunlink(spool_name); /* Lose data file when closed */
- cancel_cutthrough_connection("sender closed connection");
+ cancel_cutthrough_connection(TRUE, US"sender closed connection");
message_id[0] = 0; /* Indicate no message accepted */
smtp_reply = handle_lost_connection(US"");
smtp_yield = FALSE;
case END_SIZE:
Uunlink(spool_name); /* Lose the data file when closed */
- cancel_cutthrough_connection("mail too big");
+ cancel_cutthrough_connection(TRUE, US"mail too big");
if (smtp_input) receive_swallow_smtp(); /* Swallow incoming SMTP */
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;
case END_PROTOCOL:
Uunlink(spool_name); /* Lose the data file when closed */
- cancel_cutthrough_connection("sender protocol error");
+ cancel_cutthrough_connection(TRUE, US"sender protocol error");
smtp_reply = US""; /* Response already sent */
message_id[0] = 0; /* Indicate no message accepted */
goto TIDYUP; /* Skip to end of function */
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 */
- cancel_cutthrough_connection("error writing spoolfile");
+ cancel_cutthrough_connection(TRUE, US"error writing spoolfile");
if (smtp_input)
{
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);
+ (void)fclose(spool_data_file);
+ exim_exit(error_rc, US"receiving");
}
}
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, this will log individual signature results to
- the mainlog */
+ /* Finish verification */
dkim_exim_verify_finish();
/* Check if we must run the DKIM ACL */
if (acl_smtp_dkim && dkim_verify_signers && *dkim_verify_signers)
{
- uschar *dkim_verify_signers_expanded =
+ uschar * dkim_verify_signers_expanded =
expand_string(dkim_verify_signers);
- if (!dkim_verify_signers_expanded)
+ gstring * results = NULL;
+ int signer_sep = 0;
+ const uschar * ptr;
+ uschar * item;
+ gstring * seen_items = NULL;
+ int old_pool = store_pool;
+
+ store_pool = POOL_PERM; /* Allow created variables to live to data ACL */
+
+ if (!(ptr = dkim_verify_signers_expanded))
log_write(0, LOG_MAIN|LOG_PANIC,
"expansion of dkim_verify_signers option failed: %s",
expand_string_message);
- else
- {
- int sep = 0;
- const uschar *ptr = dkim_verify_signers_expanded;
- uschar *item = NULL;
- uschar *seen_items = NULL;
- int seen_items_size = 0;
- int seen_items_offset = 0;
- /* Default to OK when no items are present */
- rc = OK;
- while ((item = string_nextinlist(&ptr, &sep, NULL, 0)))
- {
- /* Prevent running ACL for an empty item */
- if (!item || !*item) continue;
-
- /* Only run ACL once for each domain or identity,
- no matter how often it appears in the expanded list. */
- if (seen_items)
- {
- uschar *seen_item = NULL;
- const uschar *seen_items_list = seen_items;
- BOOL seen_this_item = FALSE;
-
- while ((seen_item = string_nextinlist(&seen_items_list, &sep,
- NULL, 0)))
- if (Ustrcmp(seen_item,item) == 0)
- {
- seen_this_item = TRUE;
- break;
- }
-
- if (seen_this_item)
- {
- DEBUG(D_receive)
- debug_printf("acl_smtp_dkim: skipping signer %s, "
- "already seen\n", item);
- continue;
- }
-
- seen_items = string_append(seen_items, &seen_items_size,
- &seen_items_offset, 1, ":");
- }
-
- seen_items = string_append(seen_items, &seen_items_size,
- &seen_items_offset, 1, item);
- seen_items[seen_items_offset] = '\0';
-
- DEBUG(D_receive)
- debug_printf("calling acl_smtp_dkim for dkim_cur_signer=%s\n",
- item);
-
- dkim_exim_acl_setup(item);
- rc = acl_check(ACL_WHERE_DKIM, NULL, acl_smtp_dkim,
- &user_msg, &log_msg);
-
- if (rc != OK)
+ /* Default to OK when no items are present */
+ rc = OK;
+ while ((item = string_nextinlist(&ptr, &signer_sep, NULL, 0)))
+ {
+ /* Prevent running ACL for an empty item */
+ if (!item || !*item) continue;
+
+ /* Only run ACL once for each domain or identity,
+ no matter how often it appears in the expanded list. */
+ if (seen_items)
+ {
+ uschar * seen_item;
+ const uschar * seen_items_list = string_from_gstring(seen_items);
+ int seen_sep = ':';
+ BOOL seen_this_item = FALSE;
+
+ while ((seen_item = string_nextinlist(&seen_items_list, &seen_sep,
+ NULL, 0)))
+ if (Ustrcmp(seen_item,item) == 0)
+ {
+ seen_this_item = TRUE;
+ break;
+ }
+
+ if (seen_this_item)
{
DEBUG(D_receive)
- debug_printf("acl_smtp_dkim: acl_check returned %d on %s, "
- "skipping remaining items\n", rc, item);
- cancel_cutthrough_connection("dkim acl not ok");
- break;
+ debug_printf("acl_smtp_dkim: skipping signer %s, "
+ "already seen\n", item);
+ continue;
}
- }
- add_acl_headers(ACL_WHERE_DKIM, US"DKIM");
- if (rc == DISCARD)
- {
- recipients_count = 0;
- blackholed_by = US"DKIM ACL";
- if (log_msg != NULL)
- blackhole_log_msg = string_sprintf(": %s", log_msg);
- }
- else if (rc != OK)
- {
- Uunlink(spool_name);
- if (smtp_handle_acl_fail(ACL_WHERE_DKIM, rc, user_msg, log_msg) != 0)
- smtp_yield = FALSE; /* No more messages after dropped connection */
- smtp_reply = US""; /* Indicate reply already sent */
- message_id[0] = 0; /* Indicate no message accepted */
- goto TIDYUP; /* Skip to end of function */
- }
- }
+
+ seen_items = string_catn(seen_items, US":", 1);
+ }
+ seen_items = string_cat(seen_items, item);
+
+ rc = dkim_exim_acl_run(item, &results, &user_msg, &log_msg);
+ if (rc != OK)
+ {
+ DEBUG(D_receive)
+ debug_printf("acl_smtp_dkim: acl_check returned %d on %s, "
+ "skipping remaining items\n", rc, item);
+ cancel_cutthrough_connection(TRUE, US"dkim acl not ok");
+ break;
+ }
+ }
+ dkim_verify_status = string_from_gstring(results);
+ store_pool = old_pool;
+ add_acl_headers(ACL_WHERE_DKIM, US"DKIM");
+ if (rc == DISCARD)
+ {
+ recipients_count = 0;
+ blackholed_by = US"DKIM ACL";
+ if (log_msg)
+ blackhole_log_msg = string_sprintf(": %s", log_msg);
+ }
+ else if (rc != OK)
+ {
+ Uunlink(spool_name);
+ if (smtp_handle_acl_fail(ACL_WHERE_DKIM, rc, user_msg, log_msg) != 0)
+ smtp_yield = FALSE; /* No more messages after dropped connection */
+ smtp_reply = US""; /* Indicate reply already sent */
+ message_id[0] = 0; /* Indicate no message accepted */
+ goto TIDYUP; /* Skip to end of function */
+ }
}
+ else
+ dkim_exim_verify_log_all();
}
#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 */
#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");
+ 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";
{
recipients_count = 0;
blackholed_by = US"DATA ACL";
- if (log_msg != NULL)
+ if (log_msg)
blackhole_log_msg = string_sprintf(": %s", log_msg);
- cancel_cutthrough_connection("data acl discard");
+ cancel_cutthrough_connection(TRUE, US"data acl discard");
}
else if (rc != OK)
{
Uunlink(spool_name);
- cancel_cutthrough_connection("data acl not ok");
+ cancel_cutthrough_connection(TRUE, US"data acl not ok");
#ifdef WITH_CONTENT_SCAN
unspool_mbox();
#endif
{
#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
/* 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";
}
else
{
uschar *istemp = US"";
- uschar *s = NULL;
uschar *smtp_code;
- int size = 0;
- int sptr = 0;
+ gstring * g;
errmsg = local_scan_data;
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;
}
- s = string_append(s, &size, &sptr, 2, US"F=",
- (sender_address[0] == 0)? US"<>" : sender_address);
- s = add_host_info_for_log(s, &size, &sptr);
- s[sptr] = 0;
+ g = string_append(NULL, 2, US"F=",
+ sender_address[0] == 0 ? US"<>" : sender_address);
+ g = add_host_info_for_log(g);
log_write(0, LOG_MAIN|LOG_REJECT, "%s %srejected by local_scan(): %.256s",
- s, istemp, string_printing(errmsg));
+ string_from_gstring(g), istemp, string_printing(errmsg));
if (smtp_input)
{
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)
}
#endif
-/* Update the timstamp in our Received: header to account for any time taken by
+/* Update the timestamp in our Received: header to account for any time taken by
an ACL or by local_scan(). The new time is the time that all reception
processing is complete. */
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 canonicize
+message id is actually an addr-spec, we can use the parse routine to canonicalize
it. */
-size = 256;
-sptr = 0;
-s = store_get(size);
+g = string_get(256);
-s = string_append(s, &size, &sptr, 2,
+g = string_append(g, 2,
fake_response == FAIL ? US"(= " : US"<= ",
sender_address[0] == 0 ? US"<>" : sender_address);
if (message_reference)
- s = string_append(s, &size, &sptr, 2, US" R=", message_reference);
+ g = string_append(g, 2, US" R=", message_reference);
-s = add_host_info_for_log(s, &size, &sptr);
+g = add_host_info_for_log(g);
#ifdef SUPPORT_TLS
if (LOGGING(tls_cipher) && tls_in.cipher)
- s = string_append(s, &size, &sptr, 2, US" X=", tls_in.cipher);
+ g = string_append(g, 2, US" X=", tls_in.cipher);
if (LOGGING(tls_certificate_verified) && tls_in.cipher)
- s = string_append(s, &size, &sptr, 2, US" CV=",
- tls_in.certificate_verified ? "yes":"no");
+ g = string_append(g, 2, US" CV=", tls_in.certificate_verified ? "yes":"no");
if (LOGGING(tls_peerdn) && tls_in.peerdn)
- s = string_append(s, &size, &sptr, 3, US" DN=\"",
- string_printing(tls_in.peerdn), US"\"");
+ g = string_append(g, 3, US" DN=\"", string_printing(tls_in.peerdn), US"\"");
if (LOGGING(tls_sni) && tls_in.sni)
- s = string_append(s, &size, &sptr, 3, US" SNI=\"",
- string_printing(tls_in.sni), US"\"");
+ g = string_append(g, 3, US" SNI=\"", string_printing(tls_in.sni), US"\"");
#endif
if (sender_host_authenticated)
{
- s = string_append(s, &size, &sptr, 2, US" A=", sender_host_authenticated);
+ g = string_append(g, 2, US" A=", sender_host_authenticated);
if (authenticated_id)
{
- s = string_append(s, &size, &sptr, 2, US":", authenticated_id);
+ g = string_append(g, 2, US":", authenticated_id);
if (LOGGING(smtp_mailauth) && authenticated_sender)
- s = string_append(s, &size, &sptr, 2, US":", authenticated_sender);
+ g = string_append(g, 2, US":", authenticated_sender);
}
}
#ifndef DISABLE_PRDR
if (prdr_requested)
- s = string_catn(s, &size, &sptr, US" PRDR", 5);
+ g = string_catn(g, US" PRDR", 5);
#endif
#ifdef SUPPORT_PROXY
if (proxy_session && LOGGING(proxy))
- s = string_append(s, &size, &sptr, 2, US" PRX=", proxy_local_address);
+ g = string_append(g, 2, US" PRX=", proxy_local_address);
#endif
if (chunking_state > CHUNKING_OFFERED)
- s = string_catn(s, &size, &sptr, US" K", 2);
+ g = string_catn(g, US" K", 2);
sprintf(CS big_buffer, "%d", msg_size);
-s = string_append(s, &size, &sptr, 2, US" S=", big_buffer);
+g = string_append(g, 2, US" S=", big_buffer);
/* log 8BITMIME mode announced in MAIL_FROM
0 ... no BODY= used
if (LOGGING(8bitmime))
{
sprintf(CS big_buffer, "%d", body_8bitmime);
- s = string_append(s, &size, &sptr, 2, US" M8S=", big_buffer);
+ g = string_append(g, 2, US" M8S=", big_buffer);
}
+#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)
- s = string_append(s, &size, &sptr, 2, US" Q=", queue_name);
+ g = string_append(g, 2, US" Q=", queue_name);
/* If an addr-spec in a message-id contains a quoted string, it can contain
any characters except " \ and CR and so in particular it can contain NL!
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)
- s = string_append(s, &size, &sptr, 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];
}
*p++ = '\"';
*p = 0;
- s = string_append(s, &size, &sptr, 2, US" T=", string_printing(big_buffer));
+ g = string_append(g, 2, US" T=", string_printing(big_buffer));
}
/* Terminate the string: string_cat() and string_append() leave room, but do
not put the zero in. */
-s[sptr] = 0;
+(void) string_from_gstring(g);
/* Create a message log file if message logs are being used and this message is
not blackholed. Write the reception stuff to it. We used to leave message log
creation until the first delivery, but this has proved confusing for some
people. */
-if (message_logs && blackholed_by == NULL)
+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, s+3);
- if (deliver_freeze) fprintf(message_log, "%s frozen by %s\n", now,
+ fprintf(message_log, "%s Received from %s\n", now, g->s+3);
+ 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;
if (select(fileno(smtp_in) + 1, &select_check, NULL, NULL, &tv) != 0)
{
- int c = (receive_getc)();
+ int c = (receive_getc)(GETC_BUFFER_UNLIMITED);
if (c != EOF) (receive_ungetc)(c); else
{
- uschar *msg = US"SMTP connection lost after final dot";
+ smtp_notquit_exit(US"connection-lost", NULL, NULL);
smtp_reply = US""; /* No attempt to send a response */
smtp_yield = FALSE; /* Nothing more on this connection */
/* Re-use the log line workspace */
- sptr = 0;
- s = string_cat(s, &size, &sptr, msg);
- s = add_host_info_for_log(s, &size, &sptr);
- s[sptr] = 0;
- log_write(0, LOG_MAIN, "%s", s);
+ g->ptr = 0;
+ g = string_cat(g, US"SMTP connection lost after final dot");
+ g = add_host_info_for_log(g);
+ log_write(0, LOG_MAIN, "%s", string_from_gstring(g));
/* 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""));
Send dot onward. If accepted, wipe the spooled files, log as delivered and accept
the sender's dot (below).
- If rejected: copy response to sender, wipe the spooled files, log approriately.
- If temp-reject: accept to sender, keep the spooled files.
+ If rejected: copy response to sender, wipe the spooled files, log appropriately.
+ If temp-reject: normally accept to sender, keep the spooled file - unless defer=pass
+ in which case pass temp-reject back to initiator and dump the files.
Having the normal spool files lets us do data-filtering, and store/forward on temp-reject.
XXX We do not handle queue-only, freezing, or blackholes.
*/
-if(cutthrough.fd >= 0)
+if(cutthrough.cctx.sock >= 0 && cutthrough.delivery)
{
- uschar * msg= cutthrough_finaldot(); /* Ask the target system to accept the message */
+ uschar * msg = cutthrough_finaldot(); /* Ask the target system to accept the message */
/* Logging was done in finaldot() */
switch(msg[0])
{
cutthrough_done = ACCEPTED;
break; /* message_id needed for SMTP accept below */
+ 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);
+ 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. */
- case '4': /* Temp-reject. Keep spoolfiles and accept. */
+ 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= msg; /* Pass on the exact error */
+ smtp_reply = string_copy_malloc(msg); /* 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),
- "%s", s);
+ (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(s); /* The store for the main log message can be reused */
+store_reset(g); /* The store for the main log message can be reused */
/* 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 */
else if (chunking_state > CHUNKING_OFFERED)
{
- smtp_printf("250- %u byte chunk, total %d\r\n250 OK id=%s\r\n",
+ smtp_printf("250- %u byte chunk, total %d\r\n250 OK id=%s\r\n", FALSE,
chunking_datasize, message_size+message_linecount, message_id);
chunking_state = CHUNKING_OFFERED;
}
else
- smtp_printf("250 OK id=%s\r\n", message_id);
+ smtp_printf("250 OK id=%s\r\n", FALSE, message_id);
if (host_checking)
fprintf(stdout,
/* 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", smtp_reply);
- }
+ smtp_printf("%.1024s\r\n", FALSE, smtp_reply);
switch (cutthrough_done)
{
- case ACCEPTED: log_write(0, LOG_MAIN, "Completed");/* Delivery was done */
+ case ACCEPTED:
+ 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_fname(US"input", message_subdir, message_id, US"-H"));
- Uunlink(spool_fname(US"msglog", message_subdir, message_id, US""));
- }
- case TMP_REJ: message_id[0] = 0; /* Prevent a delivery from starting */
- default:break;
+ /* Delete spool files */
+ 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_name);
+ Uunlink(spool_fname(US"input", message_subdir, message_id, US"-H"));
+ Uunlink(spool_fname(US"msglog", message_subdir, message_id, US""));
+ }
+ default:
+ break;
+ }
+ 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;
}
- cutthrough.delivery = FALSE;
}
/* For batched SMTP, generate an error message on failure, and do
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;
git://git.exim.org / users / jgh / exim.git / blobdiff