Lookups: dsearch subdir with leading "..". Bug 2994

[exim.git] / src / exim_monitor / em_queue.c

diff --git a/src/exim_monitor/em_queue.c b/src/exim_monitor/em_queue.c
index 7d231530cc09ce5dc9fd8170b427abc583ceee0c..c7c61a652b44c28ab8210b9310ca35141d390e5b 100644 (file)
--- a/src/exim_monitor/em_queue.c
+++ b/src/exim_monitor/em_queue.c
@@ -2,8 +2,10 @@
 *                 Exim Monitor                   *
 *************************************************/
 
 *                 Exim Monitor                   *
 *************************************************/
 

-/* Copyright (c) University of Cambridge 1995 - 2017 */
+/* Copyright (c) University of Cambridge 1995 - 2018 */
+/* Copyright (c) The Exim Maintainers 2020 - 2023 */

 /* See the file NOTICE for conditions of use and distribution. */
 /* See the file NOTICE for conditions of use and distribution. */

+/* SPDX-License-Identifier: GPL-2.0-or-later */

 
 
 #include "em_hdr.h"
 
 
 #include "em_hdr.h"


@@ -64,18 +66,16 @@ address is lowercased to start with, unless it begins with
 "*", which it does for error messages. */
 
 dest_item *
 "*", which it does for error messages. */
 
 dest_item *

-find_dest(queue_item *q, uschar *name, int action, BOOL caseless)
+find_dest(queue_item * q, const uschar * name, int action, BOOL caseless)

 {
 {

-dest_item *dd;
-dest_item **d = &(q->destinations);
+dest_item * dd;
+dest_item ** d = &q->destinations;

 
 

-while (*d != NULL)
+while (*d)

   {
   if ((caseless? strcmpic(name,(*d)->address) : Ustrcmp(name,(*d)->address))
         == 0)
     {
   {
   if ((caseless? strcmpic(name,(*d)->address) : Ustrcmp(name,(*d)->address))
         == 0)
     {

-    dest_item *ddd;
-

     if (action != dest_remove) return *d;
     dd = *d;
     *d = dd->next;
     if (action != dest_remove) return *d;
     dd = *d;
     *d = dd->next;


@@ -83,14 +83,12 @@ while (*d != NULL)
 
     /* Unset any parent pointers that were to this address */
 
 
     /* Unset any parent pointers that were to this address */
 

-    for (ddd = q->destinations; ddd != NULL; ddd = ddd->next)
-      {
+    for (dest_item * ddd = q->destinations; ddd; ddd = ddd->next)

       if (ddd->parent == dd) ddd->parent = NULL;
       if (ddd->parent == dd) ddd->parent = NULL;

-      }

 
     return NULL;
     }
 
     return NULL;
     }

-  d = &((*d)->next);
+  d = &(*d)->next;

   }
 
 if (action != dest_add) return NULL;
   }
 
 if (action != dest_add) return NULL;


@@ -137,8 +135,8 @@ tree_node *
 acl_var_create(uschar *name)
 {
 tree_node *node, **root;
 acl_var_create(uschar *name)
 {
 tree_node *node, **root;

-root = (name[0] == 'c')? &acl_var_c : &acl_var_m;
-node = store_get(sizeof(tree_node) + Ustrlen(name));
+root = name[0] == 'c' ? &acl_var_c : &acl_var_m;
+node = store_get(sizeof(tree_node) + Ustrlen(name), GET_UNTAINTED);

 Ustrcpy(node->name, name);
 node->data.ptr = NULL;
 (void)tree_insertnode(root, node);
 Ustrcpy(node->name, name);
 node->data.ptr = NULL;
 (void)tree_insertnode(root, node);


@@ -152,11 +150,11 @@ return node;
 *************************************************/
 
 static queue_item *
 *************************************************/
 
 static queue_item *

-set_up(uschar *name, int dir_char)
+set_up(uschar * name, int dir_char)

 {
 int i, rc, save_errno;
 struct stat statdata;
 {
 int i, rc, save_errno;
 struct stat statdata;

-void *reset_point;
+rmark reset_point;

 uschar *p;
 queue_item *q = (queue_item *)store_malloc(sizeof(queue_item));
 uschar buffer[256];
 uschar *p;
 queue_item *q = (queue_item *)store_malloc(sizeof(queue_item));
 uschar buffer[256];


@@ -182,7 +180,7 @@ Before reading the header remember the position in the dynamic store so that
 we can recover the store into which the header is read. All data read by
 spool_read_header that is to be preserved is copied into malloc store. */
 
 we can recover the store into which the header is read. All data read by
 spool_read_header that is to be preserved is copied into malloc store. */
 

-reset_point = store_get(0);
+reset_point = store_mark();

 message_size = 0;
 message_subdir[0] = dir_char;
 sprintf(CS buffer, "%s-H", name);
 message_size = 0;
 message_subdir[0] = dir_char;
 sprintf(CS buffer, "%s-H", name);


@@ -205,8 +203,9 @@ if it's there. */
 else
   {
   q->update_time = q->input_time = received_time.tv_sec;
 else
   {
   q->update_time = q->input_time = received_time.tv_sec;

-  if ((p = strstric(sender_address+1, qualify_domain, FALSE)) != NULL &&
-    *(--p) == '@') *p = 0;
+  /* deconst ok; strstric is actually safe */
+  if ((p = strstric(US sender_address+1, qualify_domain, FALSE)) != NULL &&
+    *--p == '@') *p = 0;

   }
 
 /* If we didn't read the whole header successfully, generate an error
   }
 
 /* If we didn't read the whole header successfully, generate an error


@@ -222,11 +221,11 @@ if (rc != spool_read_OK)
     struct stat statbuf;
     sprintf(CS big_buffer, "%s/input/%s", spool_directory, buffer);
     if (Ustat(big_buffer, &statbuf) == 0)
     struct stat statbuf;
     sprintf(CS big_buffer, "%s/input/%s", spool_directory, buffer);
     if (Ustat(big_buffer, &statbuf) == 0)

-      msg = string_sprintf("*** Format error in spool file: size = %d ***",
+      msg = string_sprintf("*** Format error in spool file: size = " OFF_T_FMT " ***",

         statbuf.st_size);
         statbuf.st_size);

-    else msg = string_sprintf("*** Format error in spool file ***");
+    else msg = US"*** Format error in spool file ***";

     }
     }

-  else msg = string_sprintf("*** Cannot read spool file ***");
+  else msg = US"*** Cannot read spool file ***";

 
   if (rc == spool_read_hdrerror)
     {
 
   if (rc == spool_read_hdrerror)
     {


@@ -234,7 +233,7 @@ if (rc != spool_read_OK)
     }
   else
     {
     }
   else
     {

-    deliver_freeze = FALSE;
+    f.deliver_freeze = FALSE;

     sender_address = msg;
     recipients_count = 0;
     }
     sender_address = msg;
     recipients_count = 0;
     }


@@ -242,9 +241,9 @@ if (rc != spool_read_OK)
 
 /* Now set up the remaining data. */
 
 
 /* Now set up the remaining data. */
 

-q->frozen = deliver_freeze;
+q->frozen = f.deliver_freeze;

 
 

-if (sender_set_untrusted)
+if (f.sender_set_untrusted)

   {
   if (sender_address[0] == 0)
     {
   {
   if (sender_address[0] == 0)
     {


@@ -269,18 +268,19 @@ sender_address = NULL;
 snprintf(CS buffer, sizeof(buffer), "%s/input/%s/%s/%s-D",
   spool_directory, queue_name, message_subdir, name);
 if (Ustat(buffer, &statdata) == 0)
 snprintf(CS buffer, sizeof(buffer), "%s/input/%s/%s/%s-D",
   spool_directory, queue_name, message_subdir, name);
 if (Ustat(buffer, &statdata) == 0)

-  q->size = message_size + statdata.st_size - SPOOL_DATA_START_OFFSET + 1;
+  q->size = message_size + statdata.st_size - spool_data_start_offset(name) + 1;

 
 /* Scan and process the recipients list, skipping any that have already
 been delivered, and removing visible names. */
 
 
 /* Scan and process the recipients list, skipping any that have already
 been delivered, and removing visible names. */
 

-if (recipients_list != NULL)
+if (recipients_list)

   for (i = 0; i < recipients_count; i++)
     {
   for (i = 0; i < recipients_count; i++)
     {

-    uschar *r = recipients_list[i].address;
+    const uschar * r = recipients_list[i].address;

     if (tree_search(tree_nonrecipients, r) == NULL)
       {
     if (tree_search(tree_nonrecipients, r) == NULL)
       {

-      if ((p = strstric(r+1, qualify_domain, FALSE)) != NULL &&
+      /* deconst ok; strstric is actually safe */
+      if ((p = strstric(US r+1, qualify_domain, FALSE)) != NULL &&

         *(--p) == '@') *p = 0;
       (void)find_dest(q, r, dest_add, FALSE);
       }
         *(--p) == '@') *p = 0;
       (void)find_dest(q, r, dest_add, FALSE);
       }


@@ -463,7 +463,8 @@ code knows to look for them. We count the entries to set the value for the
 queue stripchart, and set up data for the queue display window if the "full"
 option is given. */
 
 queue stripchart, and set up data for the queue display window if the "full"
 option is given. */
 

-void scan_spool_input(int full)
+void
+scan_spool_input(int full)

 {
 int i;
 int subptr;
 {
 int i;
 int subptr;


@@ -471,8 +472,6 @@ int subdir_max = 1;
 int count = 0;
 int indexptr = 1;
 queue_item *p;
 int count = 0;
 int indexptr = 1;
 queue_item *p;

-struct dirent *ent;
-DIR *dd;

 uschar input_dir[256];
 uschar subdirs[64];
 
 uschar input_dir[256];
 uschar subdirs[64];
 


@@ -490,16 +489,18 @@ there is progress, output a dot for each one to the standard output. */
 for (i = 0; i < subdir_max; i++)
   {
   int subdirchar = subdirs[i];      /* 0 for main directory */
 for (i = 0; i < subdir_max; i++)
   {
   int subdirchar = subdirs[i];      /* 0 for main directory */

+  DIR *dd;
+  struct dirent *ent;
+

   if (subdirchar != 0)
     {
     input_dir[subptr] = '/';
     input_dir[subptr+1] = subdirchar;
     }
 
   if (subdirchar != 0)
     {
     input_dir[subptr] = '/';
     input_dir[subptr+1] = subdirchar;
     }
 

-  dd = opendir(CS input_dir);
-  if (dd == NULL) continue;
+  if (!(dd = exim_opendir(input_dir))) continue;

 
 

-  while ((ent = readdir(dd)) != NULL)
+  while ((ent = readdir(dd)))

     {
     uschar *name = US ent->d_name;
     int len = Ustrlen(name);
     {
     uschar *name = US ent->d_name;
     int len = Ustrlen(name);


@@ -543,22 +544,23 @@ removing items, the total that we are comparing against isn't actually correct,
 but in a long queue it won't make much difference, and in a short queue it
 doesn't matter anyway!*/
 
 but in a long queue it won't make much difference, and in a short queue it
 doesn't matter anyway!*/
 

-p = queue_index[0];
-while (p != NULL)
-  {
+for (p = queue_index[0]; p; )

   if (!p->seen)
     {
   if (!p->seen)
     {

-    queue_item *next = p->next;
-    if (p->prev == NULL) queue_index[0] = next;
-      else p->prev->next = next;
-    if (next == NULL)
+    queue_item * next = p->next;
+    if (p->prev)
+      p->prev->next = next;
+    else
+      queue_index[0] = next;
+    if (next)
+      next->prev = p->prev;
+    else

       {
       int i;
       {
       int i;

-      queue_item *q = queue_index[queue_index_size-1];
+      queue_item * q = queue_index[queue_index_size-1];

       for (i = queue_index_size - 1; i >= 0; i--)
         if (queue_index[i] == q) queue_index[i] = p->prev;
       }
       for (i = queue_index_size - 1; i >= 0; i--)
         if (queue_index[i] == q) queue_index[i] = p->prev;
       }

-    else next->prev = p->prev;

     clean_up(p);
     queue_total--;
     p = next;
     clean_up(p);
     queue_total--;
     p = next;


@@ -566,22 +568,17 @@ while (p != NULL)
   else
     {
     if (++count > (queue_total * indexptr)/(queue_index_size-1))
   else
     {
     if (++count > (queue_total * indexptr)/(queue_index_size-1))

-      {

       queue_index[indexptr++] = p;
       queue_index[indexptr++] = p;

-      }

     p->seen = FALSE;  /* for next time */
     p = p->next;
     }
     p->seen = FALSE;  /* for next time */
     p = p->next;
     }

-  }

 
 /* If a lot of messages have been removed at the bottom, we may not
 have got the index all filled in yet. Make sure all the pointers
 are legal. */
 
 while (indexptr < queue_index_size - 1)
 
 /* If a lot of messages have been removed at the bottom, we may not
 have got the index all filled in yet. Make sure all the pointers
 are legal. */
 
 while (indexptr < queue_index_size - 1)

-  {

   queue_index[indexptr++] = queue_index[queue_index_size-1];
   queue_index[indexptr++] = queue_index[queue_index_size-1];

-  }

 }
 
 
 }
 
 


@@ -614,7 +611,7 @@ static void update_recipients(queue_item *p)
 {
 int i;
 FILE *jread;
 {
 int i;
 FILE *jread;

-void *reset_point;
+rmark reset_point;

 struct stat statdata;
 uschar buffer[1024];
 
 struct stat statdata;
 uschar buffer[1024];
 


@@ -634,7 +631,7 @@ if (!(jread = fopen(CS buffer, "r")))
 /* Get the contents of the header file; if any problem, just give up.
 Arrange to recover the dynamic store afterwards. */
 
 /* Get the contents of the header file; if any problem, just give up.
 Arrange to recover the dynamic store afterwards. */
 

-reset_point = store_get(0);
+reset_point = store_mark();

 sprintf(CS buffer, "%s-H", p->name);
 if (spool_read_header(buffer, FALSE, TRUE) != spool_read_OK)
   {
 sprintf(CS buffer, "%s-H", p->name);
 if (spool_read_header(buffer, FALSE, TRUE) != spool_read_OK)
   {


@@ -664,13 +661,14 @@ if (recipients_list)
   for (i = 0; i < recipients_count; i++)
     {
     uschar * pp;
   for (i = 0; i < recipients_count; i++)
     {
     uschar * pp;

-    uschar * r = recipients_list[i].address;
+    const uschar * r = recipients_list[i].address;

     tree_node * node;
 
     if (!(node = tree_search(tree_nonrecipients, r)))
       node = tree_search(tree_nonrecipients, string_copylc(r));
 
     tree_node * node;
 
     if (!(node = tree_search(tree_nonrecipients, r)))
       node = tree_search(tree_nonrecipients, string_copylc(r));
 

-    if ((pp = strstric(r+1, qualify_domain, FALSE)) && *(--pp) == '@')
+    /* deconst ok; strstric is actually safe */
+    if ((pp = strstric(US r+1, qualify_domain, FALSE)) && *(--pp) == '@')

        *pp = 0;
     if (!node)
       (void)find_dest(p, r, dest_add, FALSE);
        *pp = 0;
     if (!node)
       (void)find_dest(p, r, dest_add, FALSE);