* Exim - an Internet mail transport agent *
*************************************************/
-/* Copyright (c) University of Cambridge 1995 - 2015 */
+/* Copyright (c) University of Cambridge 1995 - 2018 */
+/* Copyright (c) The Exim Maintainers 2020 */
/* See the file NOTICE for conditions of use and distribution. */
/* Functions for reading spool files. When compiling for a utility (eximon),
overwriting some other file descriptor with the value of this one), open it
with append.
+As called by deliver_message() (at least) we are operating as root.
+
Argument: the id of the message
-Returns: TRUE if file successfully opened and locked
+Returns: fd if file successfully opened and locked, else -1
-Side effect: deliver_datafile is set to the fd of the open file.
+Side effect: message_subdir is set for the (possibly split) spool directory
*/
-BOOL
+int
spool_open_datafile(uschar *id)
{
-int i;
struct stat statbuf;
flock_t lock_data;
-uschar spoolname[256];
+int fd;
/* If split_spool_directory is set, first look for the file in the appropriate
sub-directory of the input directory. If it is not found there, try the input
not found there, try the split sub-directory, in case it is left over from a
splitting state. */
-for (i = 0; i < 2; i++)
+for (int i = 0; i < 2; i++)
{
+ uschar * fname;
int save_errno;
- message_subdir[0] = (split_spool_directory == (i == 0))? id[5] : 0;
- sprintf(CS spoolname, "%s/input/%s/%s-D", spool_directory, message_subdir, id);
- deliver_datafile = Uopen(spoolname, O_RDWR | O_APPEND, 0);
- if (deliver_datafile >= 0) break;
+
+ set_subdir_str(message_subdir, id, i);
+ fname = spool_fname(US"input", message_subdir, id, US"-D");
+ DEBUG(D_deliver) debug_printf("Trying spool file %s\n", fname);
+
+ /* We protect against symlink attacks both in not propagating the
+ * file-descriptor to other processes as we exec, and also ensuring that we
+ * don't even open symlinks.
+ * No -D file inside the spool area should be a symlink.
+ */
+ if ((fd = Uopen(fname,
+#ifdef O_CLOEXEC
+ O_CLOEXEC |
+#endif
+#ifdef O_NOFOLLOW
+ O_NOFOLLOW |
+#endif
+ O_RDWR | O_APPEND, 0)) >= 0)
+ break;
save_errno = errno;
if (errno == ENOENT)
{
if (i == 0) continue;
- if (!queue_running)
- log_write(0, LOG_MAIN, "Spool file %s-D not found", id);
+ if (!f.queue_running)
+ log_write(0, LOG_MAIN, "Spool%s%s file %s-D not found",
+ *queue_name ? US" Q=" : US"",
+ *queue_name ? queue_name : US"",
+ id);
}
- else log_write(0, LOG_MAIN, "Spool error for %s: %s", spoolname,
- strerror(errno));
+ else
+ log_write(0, LOG_MAIN, "Spool error for %s: %s", fname, strerror(errno));
errno = save_errno;
- return FALSE;
+ return -1;
}
/* File is open and message_subdir is set. Set the close-on-exec flag, and lock
Unix systems it doesn't make any difference as long as Exim is consistent in
what it locks. */
-(void)fcntl(deliver_datafile, F_SETFD, fcntl(deliver_datafile, F_GETFD) |
- FD_CLOEXEC);
+#ifndef O_CLOEXEC
+(void)fcntl(fd, F_SETFD, fcntl(fd, F_GETFD) | FD_CLOEXEC);
+#endif
lock_data.l_type = F_WRLCK;
lock_data.l_whence = SEEK_SET;
lock_data.l_start = 0;
lock_data.l_len = SPOOL_DATA_START_OFFSET;
-if (fcntl(deliver_datafile, F_SETLK, &lock_data) < 0)
+if (fcntl(fd, F_SETLK, &lock_data) < 0)
{
- log_write(L_skip_delivery,
- LOG_MAIN,
- "Spool file is locked (another process is handling this message)");
- (void)close(deliver_datafile);
- deliver_datafile = -1;
+ log_write(L_skip_delivery, LOG_MAIN,
+ "Spool file for %s is locked (another process is handling this message)",
+ id);
+ (void)close(fd);
errno = 0;
- return FALSE;
+ return -1;
}
/* Get the size of the data; don't include the leading filename line
in the count, but add one for the newline before the data. */
-if (fstat(deliver_datafile, &statbuf) == 0)
+if (fstat(fd, &statbuf) == 0)
{
message_body_size = statbuf.st_size - SPOOL_DATA_START_OFFSET;
message_size = message_body_size + 1;
}
-return TRUE;
+return fd;
}
#endif /* COMPILE_UTILITY */
if (n < 5) return FALSE; /* malformed line */
buffer[n-1] = 0; /* Remove \n */
-node = store_get(sizeof(tree_node) + n - 3);
+node = store_get(sizeof(tree_node) + n - 3, TRUE); /* rcpt names tainted */
*connect = node;
Ustrcpy(node->name, buffer + 3);
node->data.ptr = NULL;
-/*************************************************
-* Read spool header file *
-*************************************************/
-
-/* This function reads a spool header file and places the data into the
-appropriate global variables. The header portion is always read, but header
-structures are built only if read_headers is set true. It isn't, for example,
-while generating -bp output.
-
-It may be possible for blocks of nulls (binary zeroes) to get written on the
-end of a file if there is a system crash during writing. It was observed on an
-earlier version of Exim that omitted to fsync() the files - this is thought to
-have been the cause of that incident, but in any case, this code must be robust
-against such an event, and if such a file is encountered, it must be treated as
-malformed.
-
-Arguments:
- name name of the header file, including the -H
- read_headers TRUE if in-store header structures are to be built
- subdir_set TRUE is message_subdir is already set
-
-Returns: spool_read_OK success
- spool_read_notopen open failed
- spool_read_enverror error in the envelope portion
- spool_read_hdrdrror error in the header portion
-*/
-
-int
-spool_read_header(uschar *name, BOOL read_headers, BOOL subdir_set)
-{
-FILE *f = NULL;
-int n;
-int rcount = 0;
-long int uid, gid;
-BOOL inheader = FALSE;
-uschar *p;
-
/* Reset all the global variables to their default values. However, there is
one exception. DO NOT change the default value of dont_deliver, because it may
be forced by an external setting. */
+void
+spool_clear_header_globals(void)
+{
acl_var_c = acl_var_m = NULL;
authenticated_id = NULL;
authenticated_sender = NULL;
-allow_unqualified_recipient = FALSE;
-allow_unqualified_sender = FALSE;
+f.allow_unqualified_recipient = FALSE;
+f.allow_unqualified_sender = FALSE;
body_linecount = 0;
body_zerocount = 0;
-deliver_firsttime = FALSE;
-deliver_freeze = FALSE;
+f.deliver_firsttime = FALSE;
+f.deliver_freeze = FALSE;
deliver_frozen_at = 0;
-deliver_manual_thaw = FALSE;
-/* dont_deliver must NOT be reset */
+f.deliver_manual_thaw = FALSE;
+/* f.dont_deliver must NOT be reset */
header_list = header_last = NULL;
host_lookup_deferred = FALSE;
host_lookup_failed = FALSE;
interface_address = NULL;
interface_port = 0;
-local_error_message = FALSE;
+f.local_error_message = FALSE;
+#ifdef HAVE_LOCAL_SCAN
local_scan_data = NULL;
+#endif
max_received_linelength = 0;
message_linecount = 0;
received_protocol = NULL;
sender_host_port = 0;
sender_host_authenticated = NULL;
sender_ident = NULL;
-sender_local = FALSE;
-sender_set_untrusted = FALSE;
+f.sender_local = FALSE;
+f.sender_set_untrusted = FALSE;
smtp_active_hostname = primary_hostname;
+#ifndef COMPILE_UTILITY
+f.spool_file_wireformat = FALSE;
+#endif
tree_nonrecipients = NULL;
#ifdef EXPERIMENTAL_BRIGHTMAIL
#ifndef DISABLE_DKIM
dkim_signers = NULL;
-dkim_disable_verify = FALSE;
-dkim_collect_input = FALSE;
+f.dkim_disable_verify = FALSE;
+dkim_collect_input = 0;
#endif
-#ifdef SUPPORT_TLS
+#ifndef DISABLE_TLS
tls_in.certificate_verified = FALSE;
-# ifdef EXPERIMENTAL_DANE
+# ifdef SUPPORT_DANE
tls_in.dane_verified = FALSE;
# endif
-tls_in.cipher = NULL;
+tls_in.ver = tls_in.cipher = NULL;
# ifndef COMPILE_UTILITY /* tls support fns not built in */
tls_free_cert(&tls_in.ourcert);
tls_free_cert(&tls_in.peercert);
dsn_ret = 0;
dsn_envid = NULL;
+}
+
+
+/*************************************************
+* Read spool header file *
+*************************************************/
+
+/* This function reads a spool header file and places the data into the
+appropriate global variables. The header portion is always read, but header
+structures are built only if read_headers is set true. It isn't, for example,
+while generating -bp output.
+
+It may be possible for blocks of nulls (binary zeroes) to get written on the
+end of a file if there is a system crash during writing. It was observed on an
+earlier version of Exim that omitted to fsync() the files - this is thought to
+have been the cause of that incident, but in any case, this code must be robust
+against such an event, and if such a file is encountered, it must be treated as
+malformed.
+
+As called from deliver_message() (at least) we are running as root.
+
+Arguments:
+ name name of the header file, including the -H
+ read_headers TRUE if in-store header structures are to be built
+ subdir_set TRUE is message_subdir is already set
+
+Returns: spool_read_OK success
+ spool_read_notopen open failed
+ spool_read_enverror error in the envelope portion
+ spool_read_hdrerror error in the header portion
+*/
+
+int
+spool_read_header(uschar *name, BOOL read_headers, BOOL subdir_set)
+{
+FILE * fp = NULL;
+int n;
+int rcount = 0;
+long int uid, gid;
+BOOL inheader = FALSE;
+
+/* Reset all the global variables to their default values. However, there is
+one exception. DO NOT change the default value of dont_deliver, because it may
+be forced by an external setting. */
+
+spool_clear_header_globals();
/* Generate the full name and open the file. If message_subdir is already
set, just look in the given directory. Otherwise, look in both the split
and unsplit directories, as for the data file above. */
-for (n = 0; n < 2; n++)
+for (int n = 0; n < 2; n++)
{
if (!subdir_set)
- message_subdir[0] = (split_spool_directory == (n == 0))? name[5] : 0;
- sprintf(CS big_buffer, "%s/input/%s/%s", spool_directory, message_subdir,
- name);
- f = Ufopen(big_buffer, "rb");
- if (f != NULL) break;
- if (n != 0 || subdir_set || errno != ENOENT) return spool_read_notopen;
+ set_subdir_str(message_subdir, name, n);
+
+ if ((fp = Ufopen(spool_fname(US"input", message_subdir, name, US""), "rb")))
+ break;
+ if (n != 0 || subdir_set || errno != ENOENT)
+ return spool_read_notopen;
}
errno = 0;
/* The first line of a spool file contains the message id followed by -H (i.e.
the file name), in order to make the file self-identifying. */
-if (Ufgets(big_buffer, big_buffer_size, f) == NULL) goto SPOOL_READ_ERROR;
+if (Ufgets(big_buffer, big_buffer_size, fp) == NULL) goto SPOOL_READ_ERROR;
if (Ustrlen(big_buffer) != MESSAGE_ID_LENGTH + 3 ||
Ustrncmp(big_buffer, name, MESSAGE_ID_LENGTH + 2) != 0)
goto SPOOL_FORMAT_ERROR;
sender, enclosed in <>. The third contains the time the message was received,
and the number of warning messages for delivery delays that have been sent. */
-if (Ufgets(big_buffer, big_buffer_size, f) == NULL) goto SPOOL_READ_ERROR;
-
-p = big_buffer + Ustrlen(big_buffer);
-while (p > big_buffer && isspace(p[-1])) p--;
-*p = 0;
-if (!isdigit(p[-1])) goto SPOOL_FORMAT_ERROR;
-while (p > big_buffer && (isdigit(p[-1]) || '-' == p[-1])) p--;
-gid = Uatoi(p);
-if (p <= big_buffer || *(--p) != ' ') goto SPOOL_FORMAT_ERROR;
-*p = 0;
-if (!isdigit(p[-1])) goto SPOOL_FORMAT_ERROR;
-while (p > big_buffer && (isdigit(p[-1]) || '-' == p[-1])) p--;
-uid = Uatoi(p);
-if (p <= big_buffer || *(--p) != ' ') goto SPOOL_FORMAT_ERROR;
-*p = 0;
+if (Ufgets(big_buffer, big_buffer_size, fp) == NULL) goto SPOOL_READ_ERROR;
+
+ {
+ uschar *p = big_buffer + Ustrlen(big_buffer);
+ while (p > big_buffer && isspace(p[-1])) p--;
+ *p = 0;
+ if (!isdigit(p[-1])) goto SPOOL_FORMAT_ERROR;
+ while (p > big_buffer && (isdigit(p[-1]) || '-' == p[-1])) p--;
+ gid = Uatoi(p);
+ if (p <= big_buffer || *(--p) != ' ') goto SPOOL_FORMAT_ERROR;
+ *p = 0;
+ if (!isdigit(p[-1])) goto SPOOL_FORMAT_ERROR;
+ while (p > big_buffer && (isdigit(p[-1]) || '-' == p[-1])) p--;
+ uid = Uatoi(p);
+ if (p <= big_buffer || *(--p) != ' ') goto SPOOL_FORMAT_ERROR;
+ *p = 0;
+ }
originator_login = string_copy(big_buffer);
originator_uid = (uid_t)uid;
originator_gid = (gid_t)gid;
/* envelope from */
-if (Ufgets(big_buffer, big_buffer_size, f) == NULL) goto SPOOL_READ_ERROR;
+if (Ufgets(big_buffer, big_buffer_size, fp) == NULL) goto SPOOL_READ_ERROR;
n = Ustrlen(big_buffer);
if (n < 3 || big_buffer[0] != '<' || big_buffer[n-2] != '>')
goto SPOOL_FORMAT_ERROR;
-sender_address = store_get(n-2);
+sender_address = store_get(n-2, TRUE); /* tainted */
Ustrncpy(sender_address, big_buffer+1, n-3);
sender_address[n-3] = 0;
/* time */
-if (Ufgets(big_buffer, big_buffer_size, f) == NULL) goto SPOOL_READ_ERROR;
-if (sscanf(CS big_buffer, "%d %d", &received_time, &warning_count) != 2)
+if (Ufgets(big_buffer, big_buffer_size, fp) == NULL) goto SPOOL_READ_ERROR;
+if (sscanf(CS big_buffer, TIME_T_FMT " %d", &received_time.tv_sec, &warning_count) != 2)
goto SPOOL_FORMAT_ERROR;
+received_time.tv_usec = 0;
-message_age = time(NULL) - received_time;
+message_age = time(NULL) - received_time.tv_sec;
+#ifndef COMPILE_UTILITY
+if (f.running_in_test_harness)
+ message_age = test_harness_fudged_queue_time(message_age);
+#endif
#ifndef COMPILE_UTILITY
DEBUG(D_deliver) debug_printf("user=%s uid=%ld gid=%ld sender=%s\n",
originator_login, (long int)originator_uid, (long int)originator_gid,
sender_address);
-#endif /* COMPILE_UTILITY */
+#endif
/* Now there may be a number of optional lines, each starting with "-". If you
add a new setting here, make sure you set the default above.
To allow new versions of Exim that add additional flags to interwork with older
versions that do not understand them, just ignore any lines starting with "-"
that we don't recognize. Otherwise it wouldn't be possible to back off a new
-version that left new-style flags written on the spool. */
+version that left new-style flags written on the spool.
+
+If the line starts with "--" the content of the variable is tainted. */
-p = big_buffer + 2;
for (;;)
{
int len;
- if (Ufgets(big_buffer, big_buffer_size, f) == NULL) goto SPOOL_READ_ERROR;
+ BOOL tainted;
+ uschar * var;
+ const uschar * p;
+
+ if (Ufgets(big_buffer, big_buffer_size, fp) == NULL) goto SPOOL_READ_ERROR;
if (big_buffer[0] != '-') break;
while ( (len = Ustrlen(big_buffer)) == big_buffer_size-1
&& big_buffer[len-1] != '\n'
{ /* buffer not big enough for line; certs make this possible */
uschar * buf;
if (big_buffer_size >= BIG_BUFFER_SIZE*4) goto SPOOL_READ_ERROR;
- buf = store_get_perm(big_buffer_size *= 2);
+ buf = store_get_perm(big_buffer_size *= 2, FALSE);
memcpy(buf, big_buffer, --len);
big_buffer = buf;
- if (Ufgets(big_buffer+len, big_buffer_size-len, f) == NULL)
+ if (Ufgets(big_buffer+len, big_buffer_size-len, fp) == NULL)
goto SPOOL_READ_ERROR;
}
big_buffer[len-1] = 0;
- switch(big_buffer[1])
+ tainted = big_buffer[1] == '-';
+ var = big_buffer + (tainted ? 2 : 1);
+ p = var + 1;
+
+ switch(*var)
{
case 'a':
uschar *name, *endptr;
int count;
tree_node *node;
- endptr = Ustrchr(big_buffer + 6, ' ');
+ endptr = Ustrchr(var + 5, ' ');
if (endptr == NULL) goto SPOOL_FORMAT_ERROR;
- name = string_sprintf("%c%.*s", big_buffer[4], endptr - big_buffer - 6,
- big_buffer + 6);
+ name = string_sprintf("%c%.*s", var[3],
+ (int)(endptr - var - 5), var + 5);
if (sscanf(CS endptr, " %d", &count) != 1) goto SPOOL_FORMAT_ERROR;
node = acl_var_create(name);
- node->data.ptr = store_get(count + 1);
- if (fread(node->data.ptr, 1, count+1, f) < count) goto SPOOL_READ_ERROR;
+ node->data.ptr = store_get(count + 1, tainted);
+ if (fread(node->data.ptr, 1, count+1, fp) < count) goto SPOOL_READ_ERROR;
((uschar*)node->data.ptr)[count] = 0;
}
else if (Ustrcmp(p, "llow_unqualified_recipient") == 0)
- allow_unqualified_recipient = TRUE;
+ f.allow_unqualified_recipient = TRUE;
else if (Ustrcmp(p, "llow_unqualified_sender") == 0)
- allow_unqualified_sender = TRUE;
+ f.allow_unqualified_sender = TRUE;
else if (Ustrncmp(p, "uth_id", 6) == 0)
- authenticated_id = string_copy(big_buffer + 9);
+ authenticated_id = string_copy_taint(var + 8, tainted);
else if (Ustrncmp(p, "uth_sender", 10) == 0)
- authenticated_sender = string_copy(big_buffer + 13);
+ authenticated_sender = string_copy_taint(var + 12, tainted);
else if (Ustrncmp(p, "ctive_hostname", 14) == 0)
- smtp_active_hostname = string_copy(big_buffer + 17);
+ smtp_active_hostname = string_copy_taint(var + 16, tainted);
/* For long-term backward compatibility, we recognize "-acl", which was
used before the number of ACL variables changed from 10 to 20. This was
else if (Ustrncmp(p, "cl ", 3) == 0)
{
- int index, count;
- uschar name[20]; /* Need plenty of space for %d format */
- tree_node *node;
- if (sscanf(CS big_buffer + 5, "%d %d", &index, &count) != 2)
+ unsigned index, count;
+ uschar name[20]; /* Need plenty of space for %u format */
+ tree_node * node;
+ if ( sscanf(CS var + 4, "%u %u", &index, &count) != 2
+ || index >= 20
+ || count > 16384 /* arbitrary limit on variable size */
+ )
goto SPOOL_FORMAT_ERROR;
if (index < 10)
- (void) string_format(name, sizeof(name), "%c%d", 'c', index);
- else if (index < 20) /* ignore out-of-range index */
- (void) string_format(name, sizeof(name), "%c%d", 'm', index - 10);
+ (void) string_format(name, sizeof(name), "%c%u", 'c', index);
+ else
+ (void) string_format(name, sizeof(name), "%c%u", 'm', index - 10);
node = acl_var_create(name);
- node->data.ptr = store_get(count + 1);
- if (fread(node->data.ptr, 1, count+1, f) < count) goto SPOOL_READ_ERROR;
- ((uschar*)node->data.ptr)[count] = 0;
+ node->data.ptr = store_get(count + 1, tainted);
+ /* We sanity-checked the count, so disable the Coverity error */
+ /* coverity[tainted_data] */
+ if (fread(node->data.ptr, 1, count+1, fp) < count) goto SPOOL_READ_ERROR;
+ (US node->data.ptr)[count] = '\0';
}
break;
case 'b':
if (Ustrncmp(p, "ody_linecount", 13) == 0)
- body_linecount = Uatoi(big_buffer + 15);
+ body_linecount = Uatoi(var + 14);
else if (Ustrncmp(p, "ody_zerocount", 13) == 0)
- body_zerocount = Uatoi(big_buffer + 15);
+ body_zerocount = Uatoi(var + 14);
#ifdef EXPERIMENTAL_BRIGHTMAIL
else if (Ustrncmp(p, "mi_verdicts ", 12) == 0)
- bmi_verdicts = string_copy(big_buffer + 14);
+ bmi_verdicts = string_copy_taint(var + 13, tainted);
#endif
break;
case 'd':
if (Ustrcmp(p, "eliver_firsttime") == 0)
- deliver_firsttime = TRUE;
+ f.deliver_firsttime = TRUE;
/* Check if the dsn flags have been set in the header file */
else if (Ustrncmp(p, "sn_ret", 6) == 0)
- dsn_ret= atoi(CS big_buffer + 8);
+ dsn_ret= atoi(CS var + 7);
else if (Ustrncmp(p, "sn_envid", 8) == 0)
- dsn_envid = string_copy(big_buffer + 11);
+ dsn_envid = string_copy_taint(var + 10, tainted);
break;
case 'f':
if (Ustrncmp(p, "rozen", 5) == 0)
{
- deliver_freeze = TRUE;
- sscanf(CS big_buffer+7, TIME_T_FMT, &deliver_frozen_at);
+ f.deliver_freeze = TRUE;
+ if (sscanf(CS var+6, TIME_T_FMT, &deliver_frozen_at) != 1)
+ goto SPOOL_READ_ERROR;
}
break;
else if (Ustrcmp(p, "ost_lookup_failed") == 0)
host_lookup_failed = TRUE;
else if (Ustrncmp(p, "ost_auth", 8) == 0)
- sender_host_authenticated = string_copy(big_buffer + 11);
+ sender_host_authenticated = string_copy_taint(var + 10, tainted);
else if (Ustrncmp(p, "ost_name", 8) == 0)
- sender_host_name = string_copy(big_buffer + 11);
+ sender_host_name = string_copy_taint(var + 10, tainted);
else if (Ustrncmp(p, "elo_name", 8) == 0)
- sender_helo_name = string_copy(big_buffer + 11);
+ sender_helo_name = string_copy_taint(var + 10, tainted);
/* We now record the port number after the address, separated by a
dot. For compatibility during upgrading, do nothing if there
else if (Ustrncmp(p, "ost_address", 11) == 0)
{
- sender_host_port = host_address_extract_port(big_buffer + 14);
- sender_host_address = string_copy(big_buffer + 14);
+ sender_host_port = host_address_extract_port(var + 13);
+ sender_host_address = string_copy_taint(var + 13, tainted);
}
break;
case 'i':
if (Ustrncmp(p, "nterface_address", 16) == 0)
{
- interface_port = host_address_extract_port(big_buffer + 19);
- interface_address = string_copy(big_buffer + 19);
+ interface_port = host_address_extract_port(var + 18);
+ interface_address = string_copy_taint(var + 18, tainted);
}
else if (Ustrncmp(p, "dent", 4) == 0)
- sender_ident = string_copy(big_buffer + 7);
+ sender_ident = string_copy_taint(var + 6, tainted);
break;
case 'l':
- if (Ustrcmp(p, "ocal") == 0) sender_local = TRUE;
- else if (Ustrcmp(big_buffer, "-localerror") == 0)
- local_error_message = TRUE;
+ if (Ustrcmp(p, "ocal") == 0)
+ f.sender_local = TRUE;
+ else if (Ustrcmp(var, "localerror") == 0)
+ f.local_error_message = TRUE;
+#ifdef HAVE_LOCAL_SCAN
else if (Ustrncmp(p, "ocal_scan ", 10) == 0)
- local_scan_data = string_copy(big_buffer + 12);
+ local_scan_data = string_copy_taint(var + 11, tainted);
+#endif
break;
case 'm':
- if (Ustrcmp(p, "anual_thaw") == 0) deliver_manual_thaw = TRUE;
+ if (Ustrcmp(p, "anual_thaw") == 0)
+ f.deliver_manual_thaw = TRUE;
else if (Ustrncmp(p, "ax_received_linelength", 22) == 0)
- max_received_linelength = Uatoi(big_buffer + 24);
+ max_received_linelength = Uatoi(var + 23);
break;
case 'N':
- if (*p == 0) dont_deliver = TRUE; /* -N */
+ if (*p == 0) f.dont_deliver = TRUE; /* -N */
break;
case 'r':
if (Ustrncmp(p, "eceived_protocol", 16) == 0)
- received_protocol = string_copy(big_buffer + 19);
+ received_protocol = string_copy_taint(var + 18, tainted);
+ else if (Ustrncmp(p, "eceived_time_usec", 17) == 0)
+ {
+ unsigned usec;
+ if (sscanf(CS var + 20, "%u", &usec) == 1)
+ received_time.tv_usec = usec;
+ }
break;
case 's':
if (Ustrncmp(p, "ender_set_untrusted", 19) == 0)
- sender_set_untrusted = TRUE;
+ f.sender_set_untrusted = TRUE;
#ifdef WITH_CONTENT_SCAN
else if (Ustrncmp(p, "pam_bar ", 8) == 0)
- spam_bar = string_copy(big_buffer + 10);
+ spam_bar = string_copy_taint(var + 9, tainted);
else if (Ustrncmp(p, "pam_score ", 10) == 0)
- spam_score = string_copy(big_buffer + 12);
+ spam_score = string_copy_taint(var + 11, tainted);
else if (Ustrncmp(p, "pam_score_int ", 14) == 0)
- spam_score_int = string_copy(big_buffer + 16);
+ spam_score_int = string_copy_taint(var + 15, tainted);
+#endif
+#ifndef COMPILE_UTILITY
+ else if (Ustrncmp(p, "pool_file_wireformat", 20) == 0)
+ f.spool_file_wireformat = TRUE;
#endif
#if defined(SUPPORT_I18N) && !defined(COMPILE_UTILITY)
else if (Ustrncmp(p, "mtputf8", 7) == 0)
#endif
break;
-#ifdef SUPPORT_TLS
+#ifndef DISABLE_TLS
case 't':
- if (Ustrncmp(p, "ls_certificate_verified", 23) == 0)
- tls_in.certificate_verified = TRUE;
- else if (Ustrncmp(p, "ls_cipher", 9) == 0)
- tls_in.cipher = string_copy(big_buffer + 12);
+ if (Ustrncmp(p, "ls_", 3) == 0)
+ {
+ const uschar * q = p + 3;
+ if (Ustrncmp(q, "certificate_verified", 20) == 0)
+ tls_in.certificate_verified = TRUE;
+ else if (Ustrncmp(q, "cipher", 6) == 0)
+ tls_in.cipher = string_copy_taint(q+7, tainted);
# ifndef COMPILE_UTILITY /* tls support fns not built in */
- else if (Ustrncmp(p, "ls_ourcert", 10) == 0)
- (void) tls_import_cert(big_buffer + 13, &tls_in.ourcert);
- else if (Ustrncmp(p, "ls_peercert", 11) == 0)
- (void) tls_import_cert(big_buffer + 14, &tls_in.peercert);
+ else if (Ustrncmp(q, "ourcert", 7) == 0)
+ (void) tls_import_cert(q+8, &tls_in.ourcert);
+ else if (Ustrncmp(q, "peercert", 8) == 0)
+ (void) tls_import_cert(q+9, &tls_in.peercert);
+# endif
+ else if (Ustrncmp(q, "peerdn", 6) == 0)
+ tls_in.peerdn = string_unprinting(string_copy_taint(q+7, tainted));
+ else if (Ustrncmp(q, "sni", 3) == 0)
+ tls_in.sni = string_unprinting(string_copy_taint(q+4, tainted));
+ else if (Ustrncmp(q, "ocsp", 4) == 0)
+ tls_in.ocsp = q[5] - '0';
+# ifndef DISABLE_TLS_RESUME
+ else if (Ustrncmp(q, "resumption", 10) == 0)
+ tls_in.resumption = q[11] - 'A';
# endif
- else if (Ustrncmp(p, "ls_peerdn", 9) == 0)
- tls_in.peerdn = string_unprinting(string_copy(big_buffer + 12));
- else if (Ustrncmp(p, "ls_sni", 6) == 0)
- tls_in.sni = string_unprinting(string_copy(big_buffer + 9));
- else if (Ustrncmp(p, "ls_ocsp", 7) == 0)
- tls_in.ocsp = big_buffer[10] - '0';
+ else if (Ustrncmp(q, "ver", 3) == 0)
+ tls_in.ver = string_copy_taint(q+4, tainted);
+ }
break;
#endif
#ifndef COMPILE_UTILITY
DEBUG(D_deliver)
- debug_printf("sender_local=%d ident=%s\n", sender_local,
- (sender_ident == NULL)? US"unset" : sender_ident);
+ debug_printf("sender_local=%d ident=%s\n", f.sender_local,
+ sender_ident ? sender_ident : US"unset");
#endif /* COMPILE_UTILITY */
/* We now have the tree of addresses NOT to deliver to, or a line
containing "XX", indicating no tree. */
if (Ustrncmp(big_buffer, "XX\n", 3) != 0 &&
- !read_nonrecipients_tree(&tree_nonrecipients, f, big_buffer, big_buffer_size))
+ !read_nonrecipients_tree(&tree_nonrecipients, fp, big_buffer, big_buffer_size))
goto SPOOL_FORMAT_ERROR;
#ifndef COMPILE_UTILITY
#endif /* COMPILE_UTILITY */
/* After reading the tree, the next line has not yet been read into the
-buffer. It contains the count of recipients which follow on separate lines. */
+buffer. It contains the count of recipients which follow on separate lines.
+Apply an arbitrary sanity check.*/
-if (Ufgets(big_buffer, big_buffer_size, f) == NULL) goto SPOOL_READ_ERROR;
-if (sscanf(CS big_buffer, "%d", &rcount) != 1) goto SPOOL_FORMAT_ERROR;
+if (Ufgets(big_buffer, big_buffer_size, fp) == NULL) goto SPOOL_READ_ERROR;
+if (sscanf(CS big_buffer, "%d", &rcount) != 1 || rcount > 16384)
+ goto SPOOL_FORMAT_ERROR;
#ifndef COMPILE_UTILITY
DEBUG(D_deliver) debug_printf("recipients_count=%d\n", rcount);
#endif /* COMPILE_UTILITY */
recipients_list_max = rcount;
-recipients_list = store_get(rcount * sizeof(recipient_item));
+recipients_list = store_get(rcount * sizeof(recipient_item), FALSE);
+
+/* We sanitised the count and know we have enough memory, so disable
+the Coverity error on recipients_count */
+/* coverity[tainted_data] */
for (recipients_count = 0; recipients_count < rcount; recipients_count++)
{
uschar *errors_to = NULL;
uschar *p;
- if (Ufgets(big_buffer, big_buffer_size, f) == NULL) goto SPOOL_READ_ERROR;
+ if (Ufgets(big_buffer, big_buffer_size, fp) == NULL) goto SPOOL_READ_ERROR;
nn = Ustrlen(big_buffer);
if (nn < 2) goto SPOOL_FORMAT_ERROR;
if (*p == ',')
{
int dummy;
+#if !defined (COMPILE_UTILITY)
+ DEBUG(D_deliver) debug_printf("**** SPOOL_IN - Exim 3 spool file\n");
+#endif
while (isdigit(*(--p)) || *p == ',');
if (*p == ' ')
{
else if (*p == ' ')
{
+#if !defined (COMPILE_UTILITY)
+ DEBUG(D_deliver) debug_printf("**** SPOOL_IN - early Exim 4 spool file\n");
+#endif
*p++ = 0;
(void)sscanf(CS p, "%d", &pno);
}
int flags;
#if !defined (COMPILE_UTILITY)
- DEBUG(D_deliver) debug_printf("**** SPOOL_IN - Exim 4 standard format spoolfile\n");
+ DEBUG(D_deliver) debug_printf("**** SPOOL_IN - Exim standard format spoolfile\n");
#endif
(void)sscanf(CS p+1, "%d", &flags);
if (len > 0)
{
p -= len;
- errors_to = string_copy(p);
+ errors_to = string_copy_taint(p, TRUE);
}
}
if (len > 0)
{
p -= len;
- orcpt = string_copy(p);
+ orcpt = string_copy_taint(p, TRUE);
}
}
else
{ DEBUG(D_deliver) debug_printf("**** SPOOL_IN - No additional fields\n"); }
- if ((orcpt != NULL) || (dsn_flags != 0))
- {
- DEBUG(D_deliver) debug_printf("**** SPOOL_IN - address: |%s| orcpt: |%s| dsn_flags: %d\n",
+ if (orcpt || dsn_flags)
+ DEBUG(D_deliver) debug_printf("**** SPOOL_IN - address: <%s> orcpt: <%s> dsn_flags: 0x%x\n",
big_buffer, orcpt, dsn_flags);
- }
- if (errors_to != NULL)
- {
- DEBUG(D_deliver) debug_printf("**** SPOOL_IN - address: |%s| errorsto: |%s|\n",
+ if (errors_to)
+ DEBUG(D_deliver) debug_printf("**** SPOOL_IN - address: <%s> errorsto: <%s>\n",
big_buffer, errors_to);
- }
#endif
- recipients_list[recipients_count].address = string_copy(big_buffer);
+ recipients_list[recipients_count].address = string_copy_taint(big_buffer, TRUE);
recipients_list[recipients_count].pno = pno;
recipients_list[recipients_count].errors_to = errors_to;
recipients_list[recipients_count].orcpt = orcpt;
list if requested to do so. */
inheader = TRUE;
-if (Ufgets(big_buffer, big_buffer_size, f) == NULL) goto SPOOL_READ_ERROR;
+if (Ufgets(big_buffer, big_buffer_size, fp) == NULL) goto SPOOL_READ_ERROR;
if (big_buffer[0] != '\n') goto SPOOL_FORMAT_ERROR;
-while ((n = fgetc(f)) != EOF)
+while ((n = fgetc(fp)) != EOF)
{
header_line *h;
uschar flag[4];
int i;
if (!isdigit(n)) goto SPOOL_FORMAT_ERROR;
- if(ungetc(n, f) == EOF || fscanf(f, "%d%c ", &n, flag) == EOF)
+ if(ungetc(n, fp) == EOF || fscanf(fp, "%d%c ", &n, flag) == EOF)
goto SPOOL_READ_ERROR;
if (flag[0] != '*') message_size += n; /* Omit non-transmitted headers */
if (read_headers)
{
- h = store_get(sizeof(header_line));
+ h = store_get(sizeof(header_line), FALSE);
h->next = NULL;
h->type = flag[0];
h->slen = n;
- h->text = store_get(n+1);
+ h->text = store_get(n+1, TRUE); /* tainted */
if (h->type == htype_received) received_count++;
- if (header_list == NULL) header_list = h;
- else header_last->next = h;
+ if (header_list) header_last->next = h;
+ else header_list = h;
header_last = h;
for (i = 0; i < n; i++)
{
- int c = fgetc(f);
+ int c = fgetc(fp);
if (c == 0 || c == EOF) goto SPOOL_FORMAT_ERROR;
if (c == '\n' && h->type != htype_old) message_linecount++;
h->text[i] = c;
else for (i = 0; i < n; i++)
{
- int c = fgetc(f);
+ int c = fgetc(fp);
if (c == 0 || c == EOF) goto SPOOL_FORMAT_ERROR;
}
}
message_linecount += body_linecount;
-fclose(f);
+fclose(fp);
return spool_read_OK;
DEBUG(D_any) debug_printf("Error while reading spool file %s\n", name);
#endif /* COMPILE_UTILITY */
- fclose(f);
+ fclose(fp);
errno = n;
- return inheader? spool_read_hdrerror : spool_read_enverror;
+ return inheader ? spool_read_hdrerror : spool_read_enverror;
}
SPOOL_FORMAT_ERROR:
DEBUG(D_any) debug_printf("Format error in spool file %s\n", name);
#endif /* COMPILE_UTILITY */
-fclose(f);
+fclose(fp);
errno = ERRNO_SPOOLFORMAT;
return inheader? spool_read_hdrerror : spool_read_enverror;
}
git://git.exim.org / users / heiko / exim.git / blobdiff