* Exim - an Internet mail transport agent *
*************************************************/
-/* Copyright (c) University of Cambridge 1995 - 2009 */
+/* Copyright (c) University of Cambridge 1995 - 2018 */
/* See the file NOTICE for conditions of use and distribution. */
/* This module contains code for extracting addresses from a forwarding list
* Write string down pipe *
*************************************************/
-/* This function is used for tranferring a string down a pipe between
+/* This function is used for transferring a string down a pipe between
processes. If the pointer is NULL, a length of zero is written.
Arguments:
fd the pipe
s the string
-Returns: nothing
+Returns: -1 on error, else 0
*/
-static void
-rda_write_string(int fd, uschar *s)
+static int
+rda_write_string(int fd, const uschar *s)
{
int len = (s == NULL)? 0 : Ustrlen(s) + 1;
-(void)write(fd, &len, sizeof(int));
-if (s != NULL) (void)write(fd, s, len);
+return ( write(fd, &len, sizeof(int)) != sizeof(int)
+ || (s != NULL && write(fd, s, len) != len)
+ )
+ ? -1 : 0;
}
int len;
if (read(fd, &len, sizeof(int)) != sizeof(int)) return FALSE;
-if (len == 0) *sp = NULL; else
- {
- *sp = store_get(len);
- if (read(fd, *sp, len) != len) return FALSE;
- }
+if (len == 0)
+ *sp = NULL;
+else
+ /* We know we have enough memory so disable the error on "len" */
+ /* coverity[tainted_data] */
+ if (read(fd, *sp = store_get(len), len) != len) return FALSE;
return TRUE;
}
{
DEBUG(D_rewrite) debug_printf("turned off address rewrite logging (not "
"root or exim in this process)\n");
- log_write_selector &= ~L_address_rewrite;
+ BIT_CLEAR(log_selector, log_selector_size, Li_address_rewrite);
}
/* Now do the business */
/* Pass back whether it was a filter, and the return code and any overall
error text via the pipe. */
- (void)write(fd, filtertype, sizeof(int));
- (void)write(fd, &yield, sizeof(int));
- rda_write_string(fd, *error);
+ if ( write(fd, filtertype, sizeof(int)) != sizeof(int)
+ || write(fd, &yield, sizeof(int)) != sizeof(int)
+ || rda_write_string(fd, *error) != 0
+ )
+ goto bad;
/* Pass back the contents of any syntax error blocks if we have a pointer */
{
error_block *ep;
for (ep = *eblockp; ep != NULL; ep = ep->next)
- {
- rda_write_string(fd, ep->text1);
- rda_write_string(fd, ep->text2);
- }
- rda_write_string(fd, NULL); /* Indicates end of eblocks */
+ if ( rda_write_string(fd, ep->text1) != 0
+ || rda_write_string(fd, ep->text2) != 0
+ )
+ goto bad;
+ if (rda_write_string(fd, NULL) != 0) /* Indicates end of eblocks */
+ goto bad;
}
/* If this is a system filter, we have to pass back the numbers of any
int i = 0;
header_line *h;
for (h = header_list; h != waslast->next; i++, h = h->next)
- {
- if (h->type == htype_old) (void)write(fd, &i, sizeof(i));
- }
+ if ( h->type == htype_old
+ && write(fd, &i, sizeof(i)) != sizeof(i)
+ )
+ goto bad;
+
i = -1;
- (void)write(fd, &i, sizeof(i));
+ if (write(fd, &i, sizeof(i)) != sizeof(i))
+ goto bad;
while (waslast != header_last)
{
waslast = waslast->next;
if (waslast->type != htype_old)
- {
- rda_write_string(fd, waslast->text);
- (void)write(fd, &(waslast->type), sizeof(waslast->type));
- }
+ if ( rda_write_string(fd, waslast->text) != 0
+ || write(fd, &(waslast->type), sizeof(waslast->type))
+ != sizeof(waslast->type)
+ )
+ goto bad;
}
- rda_write_string(fd, NULL); /* Indicates end of added headers */
+ if (rda_write_string(fd, NULL) != 0) /* Indicates end of added headers */
+ goto bad;
}
/* Write the contents of the $n variables */
- (void)write(fd, filter_n, sizeof(filter_n));
+ if (write(fd, filter_n, sizeof(filter_n)) != sizeof(filter_n))
+ goto bad;
/* If the result was DELIVERED or NOTDELIVERED, we pass back the generated
addresses, and their associated information, through the pipe. This is
yield == FF_FAIL || yield == FF_FREEZE)
{
address_item *addr;
- for (addr = *generated; addr != NULL; addr = addr->next)
+ for (addr = *generated; addr; addr = addr->next)
{
int reply_options = 0;
- rda_write_string(fd, addr->address);
- (void)write(fd, &(addr->mode), sizeof(addr->mode));
- (void)write(fd, &(addr->flags), sizeof(addr->flags));
- rda_write_string(fd, addr->p.errors_address);
+ if ( rda_write_string(fd, addr->address) != 0
+ || write(fd, &addr->mode, sizeof(addr->mode)) != sizeof(addr->mode)
+ || write(fd, &addr->flags, sizeof(addr->flags)) != sizeof(addr->flags)
+ || rda_write_string(fd, addr->prop.errors_address) != 0
+ )
+ goto bad;
- if (addr->pipe_expandn != NULL)
+ if (addr->pipe_expandn)
{
uschar **pp;
- for (pp = addr->pipe_expandn; *pp != NULL; pp++)
- rda_write_string(fd, *pp);
+ for (pp = addr->pipe_expandn; *pp; pp++)
+ if (rda_write_string(fd, *pp) != 0)
+ goto bad;
}
- rda_write_string(fd, NULL);
-
- if (addr->reply == NULL)
- (void)write(fd, &reply_options, sizeof(int)); /* 0 means no reply */
+ if (rda_write_string(fd, NULL) != 0)
+ goto bad;
+
+ if (!addr->reply)
+ {
+ if (write(fd, &reply_options, sizeof(int)) != sizeof(int)) /* 0 means no reply */
+ goto bad;
+ }
else
{
reply_options |= REPLY_EXISTS;
if (addr->reply->file_expand) reply_options |= REPLY_EXPAND;
if (addr->reply->return_message) reply_options |= REPLY_RETURN;
- (void)write(fd, &reply_options, sizeof(int));
- (void)write(fd, &(addr->reply->expand_forbid), sizeof(int));
- (void)write(fd, &(addr->reply->once_repeat), sizeof(time_t));
- rda_write_string(fd, addr->reply->to);
- rda_write_string(fd, addr->reply->cc);
- rda_write_string(fd, addr->reply->bcc);
- rda_write_string(fd, addr->reply->from);
- rda_write_string(fd, addr->reply->reply_to);
- rda_write_string(fd, addr->reply->subject);
- rda_write_string(fd, addr->reply->headers);
- rda_write_string(fd, addr->reply->text);
- rda_write_string(fd, addr->reply->file);
- rda_write_string(fd, addr->reply->logfile);
- rda_write_string(fd, addr->reply->oncelog);
+ if ( write(fd, &reply_options, sizeof(int)) != sizeof(int)
+ || write(fd, &(addr->reply->expand_forbid), sizeof(int))
+ != sizeof(int)
+ || write(fd, &(addr->reply->once_repeat), sizeof(time_t))
+ != sizeof(time_t)
+ || rda_write_string(fd, addr->reply->to) != 0
+ || rda_write_string(fd, addr->reply->cc) != 0
+ || rda_write_string(fd, addr->reply->bcc) != 0
+ || rda_write_string(fd, addr->reply->from) != 0
+ || rda_write_string(fd, addr->reply->reply_to) != 0
+ || rda_write_string(fd, addr->reply->subject) != 0
+ || rda_write_string(fd, addr->reply->headers) != 0
+ || rda_write_string(fd, addr->reply->text) != 0
+ || rda_write_string(fd, addr->reply->file) != 0
+ || rda_write_string(fd, addr->reply->logfile) != 0
+ || rda_write_string(fd, addr->reply->oncelog) != 0
+ )
+ goto bad;
}
}
- rda_write_string(fd, NULL); /* Marks end of addresses */
+ if (rda_write_string(fd, NULL) != 0) /* Marks end of addresses */
+ goto bad;
}
/* OK, this process is now done. Free any cached resources. Must use _exit()
and not exit() !! */
+out:
(void)close(fd);
search_tidyup();
_exit(0);
+
+bad:
+ DEBUG(D_rewrite) debug_printf("rda_interpret: failed write to pipe\n");
+ goto out;
}
/* Back in the main process: panic if the fork did not succeed. */
/* Read the contents of any syntax error blocks if we have a pointer */
-if (eblockp != NULL)
+if (eblockp)
{
- uschar *s;
error_block *e;
- error_block **p = eblockp;
- for (;;)
+ error_block **p;
+ for (p = eblockp; ; p = &e->next)
{
+ uschar *s;
if (!rda_read_string(fd, &s)) goto DISASTER;
- if (s == NULL) break;
+ if (!s) break;
e = store_get(sizeof(error_block));
e->next = NULL;
e->text1 = s;
if (!rda_read_string(fd, &s)) goto DISASTER;
e->text2 = s;
*p = e;
- p = &(e->next);
}
}
while (hn < n)
{
hn++;
- h = h->next;
- if (h == NULL) goto DISASTER_NO_HEADER;
+ if (!(h = h->next)) goto DISASTER_NO_HEADER;
}
h->type = htype_old;
}
uschar *s;
int type;
if (!rda_read_string(fd, &s)) goto DISASTER;
- if (s == NULL) break;
+ if (!s) break;
if (read(fd, &type, sizeof(type)) != sizeof(type)) goto DISASTER;
header_add(type, "%s", s);
}
/* Next comes the mode and the flags fields */
- if (read(fd, &(addr->mode), sizeof(addr->mode)) != sizeof(addr->mode) ||
- read(fd, &(addr->flags), sizeof(addr->flags)) != sizeof(addr->flags) ||
- !rda_read_string(fd, &(addr->p.errors_address))) goto DISASTER;
+ if (read(fd, &addr->mode, sizeof(addr->mode)) != sizeof(addr->mode) ||
+ read(fd, &addr->flags, sizeof(addr->flags)) != sizeof(addr->flags) ||
+ !rda_read_string(fd, &addr->prop.errors_address)) goto DISASTER;
/* Next comes a possible setting for $thisaddress and any numerical
variables for pipe expansion, terminated by a NULL string. The maximum
if (i > 0)
{
- addr->pipe_expandn = store_get((i+1) * sizeof(uschar **));
+ addr->pipe_expandn = store_get((i+1) * sizeof(uschar *));
addr->pipe_expandn[i] = NULL;
while (--i >= 0) addr->pipe_expandn[i] = expandn[i];
}
git://git.exim.org / exim.git / blobdiff