Import Upstream version 4.89

[hcoop/debian/exim4.git] / src / exim_dbutil.c

diff --git a/src/exim_dbutil.c b/src/exim_dbutil.c
index 124303a..c710772 100644 (file)
--- a/src/exim_dbutil.c
+++ b/src/exim_dbutil.c
@@ -2,7 +2,7 @@
 *     Exim - an Internet mail transport agent    *
 *************************************************/
 
-/* Copyright (c) University of Cambridge 1995 - 2009 */
+/* Copyright (c) University of Cambridge 1995 - 2016 */
 /* See the file NOTICE for conditions of use and distribution. */
 
 
@@ -259,7 +259,7 @@ uschar buffer[256];
 ensures that Exim has exclusive use of the database before it even tries to
 open it. If there is a database, there should be a lock file in existence. */
 
-sprintf(CS buffer, "%s/db/%s.lockfile", spool_directory, name);
+sprintf(CS buffer, "%s/db/%.200s.lockfile", spool_directory, name);
 
 dbblock->lockfd = Uopen(buffer, flags, 0);
 if (dbblock->lockfd < 0)
@@ -285,8 +285,9 @@ if (sigalrm_seen) errno = ETIMEDOUT;
 if (rc < 0)
   {
   printf("** Failed to get %s lock for %s: %s",
-    ((flags & O_RDONLY) != 0)? "read" : "write", buffer,
-    (errno == ETIMEDOUT)? "timed out" : strerror(errno));
+    flags & O_WRONLY ? "write" : "read",
+    buffer,
+    errno == ETIMEDOUT ? "timed out" : strerror(errno));
   (void)close(dbblock->lockfd);
   return NULL;
   }
@@ -356,15 +357,19 @@ Returns: a pointer to the retrieved record, or
 */
 
 void *
-dbfn_read_with_length(open_db *dbblock, uschar *key, int *length)
+dbfn_read_with_length(open_db *dbblock, const uschar *key, int *length)
 {
 void *yield;
 EXIM_DATUM key_datum, result_datum;
+int klen = Ustrlen(key) + 1;
+uschar * key_copy = store_get(klen);
+
+memcpy(key_copy, key, klen);
 
 EXIM_DATUM_INIT(key_datum);         /* Some DBM libraries require the datum */
 EXIM_DATUM_INIT(result_datum);      /* to be cleared before use. */
-EXIM_DATUM_DATA(key_datum) = CS key;
-EXIM_DATUM_SIZE(key_datum) = Ustrlen(key) + 1;
+EXIM_DATUM_DATA(key_datum) = CS key_copy;
+EXIM_DATUM_SIZE(key_datum) = klen;
 
 if (!EXIM_DBGET(dbblock->dbptr, key_datum, result_datum)) return NULL;
 
@@ -396,16 +401,20 @@ Returns:    the yield of the underlying dbm or db "write" function. If this
 */
 
 int
-dbfn_write(open_db *dbblock, uschar *key, void *ptr, int length)
+dbfn_write(open_db *dbblock, const uschar *key, void *ptr, int length)
 {
 EXIM_DATUM key_datum, value_datum;
 dbdata_generic *gptr = (dbdata_generic *)ptr;
+int klen = Ustrlen(key) + 1;
+uschar * key_copy = store_get(klen);
+
+memcpy(key_copy, key, klen);
 gptr->time_stamp = time(NULL);
 
 EXIM_DATUM_INIT(key_datum);         /* Some DBM libraries require the datum */
 EXIM_DATUM_INIT(value_datum);       /* to be cleared before use. */
-EXIM_DATUM_DATA(key_datum) = CS key;
-EXIM_DATUM_SIZE(key_datum) = Ustrlen(key) + 1;
+EXIM_DATUM_DATA(key_datum) = CS key_copy;
+EXIM_DATUM_SIZE(key_datum) = klen;
 EXIM_DATUM_DATA(value_datum) = CS ptr;
 EXIM_DATUM_SIZE(value_datum) = length;
 return EXIM_DBPUT(dbblock->dbptr, key_datum, value_datum);
@@ -426,12 +435,16 @@ Returns: the yield of the underlying dbm or db "delete" function.
 */
 
 int
-dbfn_delete(open_db *dbblock, uschar *key)
+dbfn_delete(open_db *dbblock, const uschar *key)
 {
+int klen = Ustrlen(key) + 1;
+uschar * key_copy = store_get(klen);
+
+memcpy(key_copy, key, klen);
 EXIM_DATUM key_datum;
 EXIM_DATUM_INIT(key_datum);         /* Some DBM libraries require clearing */
-EXIM_DATUM_DATA(key_datum) = CS key;
-EXIM_DATUM_SIZE(key_datum) = Ustrlen(key) + 1;
+EXIM_DATUM_DATA(key_datum) = CS key_copy;
+EXIM_DATUM_SIZE(key_datum) = klen;
 return EXIM_DBDEL(dbblock->dbptr, key_datum);
 }
 
@@ -630,19 +643,6 @@ while (key != NULL)
         printf("\n");
         }
 
-      /* Old-style domain record, without separate timestamps. This code can
-      eventually be thrown away, say in 5 years' time (it's now Feb 2003). */
-
-      else
-        {
-        printf("%s %s callout=%s postmaster=%s random=%s\n",
-          print_time(((dbdata_generic *)value)->time_stamp),
-          keybuffer,
-          print_cache(callout->result),
-          print_cache(callout->postmaster_result),
-          print_cache(callout->random_result));
-        }
-
       break;
 
       case type_ratelimit:
@@ -802,13 +802,13 @@ for(;;)
         if (record == NULL) printf("not found\n"); else
           {
           time_t tt;
-          int length = 0;     /* Stops compiler warning */
+          /*int length = 0;      Stops compiler warning */
 
           switch(dbdata_type)
             {
             case type_retry:
             retry = (dbdata_retry *)record;
-            length = sizeof(dbdata_retry) + Ustrlen(retry->text);
+            /* length = sizeof(dbdata_retry) + Ustrlen(retry->text); */
 
             switch(fieldno)
               {
@@ -858,7 +858,7 @@ for(;;)
 
             case type_callout:
             callout = (dbdata_callout_cache *)record;
-            length = sizeof(dbdata_callout_cache);
+            /* length = sizeof(dbdata_callout_cache); */
             switch(fieldno)
               {
               case 0: