-/* $Cambridge: exim/src/src/exim_dbutil.c,v 1.12 2009/11/16 19:50:36 nm4 Exp $ */
-
/*************************************************
* 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. */
int rc;
struct flock lock_data;
BOOL read_only = flags == O_RDONLY;
-uschar buffer[256];
+uschar dirname[256], filename[256];
/* The first thing to do is to open a separate file on which to lock. This
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);
+snprintf(CS dirname, sizeof(dirname), "%s/db", spool_directory);
+snprintf(CS filename, sizeof(filename), "%s/%.200s.lockfile", dirname, name);
-dbblock->lockfd = Uopen(buffer, flags, 0);
+dbblock->lockfd = Uopen(filename, flags, 0);
if (dbblock->lockfd < 0)
{
- printf("** Failed to open database lock file %s: %s\n", buffer,
+ printf("** Failed to open database lock file %s: %s\n", filename,
strerror(errno));
return NULL;
}
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",
+ filename,
+ errno == ETIMEDOUT ? "timed out" : strerror(errno));
(void)close(dbblock->lockfd);
return NULL;
}
/* At this point we have an opened and locked separate lock file, that is,
exclusive access to the database, so we can go ahead and open it. */
-sprintf(CS buffer, "%s/db/%s", spool_directory, name);
-EXIM_DBOPEN(buffer, flags, 0, &(dbblock->dbptr));
+sprintf(CS filename, "%s/%s", dirname, name);
+EXIM_DBOPEN(filename, dirname, flags, 0, &(dbblock->dbptr));
if (dbblock->dbptr == NULL)
{
- printf("** Failed to open DBM file %s for %s:\n %s%s\n", buffer,
+ printf("** Failed to open DBM file %s for %s:\n %s%s\n", filename,
read_only? "reading" : "writing", strerror(errno),
#ifdef USE_DB
" (or Berkeley DB error while opening)"
*/
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;
*/
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);
*/
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);
}
dbdata_type = check_args(argc, argv, US"dumpdb", US"");
spool_directory = argv[1];
-dbm = dbfn_open(argv[2], O_RDONLY, &dbblock, FALSE);
-if (dbm == NULL) exit(1);
+if (!(dbm = dbfn_open(argv[2], O_RDONLY, &dbblock, FALSE)))
+ exit(1);
/* Scan the file, formatting the information for each entry. Note
that data is returned in a malloc'ed block, in order that it be
correctly aligned. */
-key = dbfn_scan(dbm, TRUE, &cursor);
-while (key != NULL)
+for (key = dbfn_scan(dbm, TRUE, &cursor);
+ key;
+ key = dbfn_scan(dbm, FALSE, &cursor))
{
dbdata_retry *retry;
dbdata_wait *wait;
return 1;
}
Ustrcpy(keybuffer, key);
- value = dbfn_read_with_length(dbm, keybuffer, &length);
- if (value == NULL)
+ if (!(value = dbfn_read_with_length(dbm, keybuffer, &length)))
fprintf(stderr, "**** Entry \"%s\" was in the key scan, but the record "
"was not found in the file - something is wrong!\n",
CS keybuffer);
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:
}
store_reset(value);
}
- key = dbfn_scan(dbm, FALSE, &cursor);
}
dbfn_close(dbm);
{
int verify = 1;
spool_directory = argv[1];
- dbm = dbfn_open(argv[2], O_RDWR, &dbblock, FALSE);
- if (dbm == NULL) continue;
+
+ if (!(dbm = dbfn_open(argv[2], O_RDWR, &dbblock, FALSE)))
+ continue;
if (Ustrcmp(field, "d") == 0)
{
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)
{
case type_callout:
callout = (dbdata_callout_cache *)record;
- length = sizeof(dbdata_callout_cache);
+ /* length = sizeof(dbdata_callout_cache); */
switch(fieldno)
{
case 0:
/* Handle a read request, or verify after an update. */
spool_directory = argv[1];
- dbm = dbfn_open(argv[2], O_RDONLY, &dbblock, FALSE);
- if (dbm == NULL) continue;
+ if (!(dbm = dbfn_open(argv[2], O_RDONLY, &dbblock, FALSE)))
+ continue;
- record = dbfn_read_with_length(dbm, name, &oldlength);
- if (record == NULL)
+ if (!(record = dbfn_read_with_length(dbm, name, &oldlength)))
{
printf("record %s not found\n", name);
name[0] = 0;
printf("Tidying Exim hints database %s/db/%s\n", argv[1], argv[2]);
spool_directory = argv[1];
-dbm = dbfn_open(argv[2], O_RDWR, &dbblock, FALSE);
-if (dbm == NULL) exit(1);
+if (!(dbm = dbfn_open(argv[2], O_RDWR, &dbblock, FALSE)))
+ exit(1);
/* Prepare for building file names */
Therefore, we scan and build a list of all the keys. Then we use that to
read the records and possibly update them. */
-key = dbfn_scan(dbm, TRUE, &cursor);
-while (key != NULL)
+for (key = dbfn_scan(dbm, TRUE, &cursor);
+ key;
+ key = dbfn_scan(dbm, FALSE, &cursor))
{
key_item *k = store_get(sizeof(key_item) + Ustrlen(key));
k->next = keychain;
keychain = k;
Ustrcpy(k->key, key);
- key = dbfn_scan(dbm, FALSE, &cursor);
}
/* Now scan the collected keys and operate on the records, resetting
reset_point = store_get(0);
-while (keychain != NULL)
+while (keychain)
{
dbdata_generic *value;
git://git.exim.org / users / jgh / exim.git / blobdiff