Add key iteration functionality to keydb backends.

[onak.git] / keydb_file.c

diff --git a/keydb_file.c b/keydb_file.c
index 81cb22a2db38acf34e7e4c3ffbe9039770689ebb..1ef81b473825818123d5c633cdeb10ae672383be 100644 (file)
--- a/keydb_file.c
+++ b/keydb_file.c
@@ -3,11 +3,12 @@
  *
  * Jonathan McDowell <noodles@earth.li>
  *
- * Copyright 2002 Project Purple
+ * Copyright 2002-2004 Project Purple
  */
 
 #include <sys/types.h>
 #include <sys/uio.h>
+#include <dirent.h>
 #include <errno.h>
 #include <fcntl.h>
 #include <stdio.h>
@@ -20,6 +21,7 @@
 #include "keyid.h"
 #include "keystructs.h"
 #include "ll.h"
+#include "log.h"
 #include "mem.h"
 #include "onak-conf.h"
 #include "parsekey.h"
@@ -167,6 +169,66 @@ int fetch_key_text(const char *search, struct openpgp_publickey **publickey)
        return 0;
 }
 
+/**
+ *     iterate_keys - call a function once for each key in the db.
+ *     @iterfunc: The function to call.
+ *     @ctx: A context pointer
+ *
+ *     Calls iterfunc once for each key in the database. ctx is passed
+ *     unaltered to iterfunc. This function is intended to aid database dumps
+ *     and statistic calculations.
+ *
+ *     Returns the number of keys we iterated over.
+ */
+int iterate_keys(void (*iterfunc)(void *ctx, struct openpgp_publickey *key),
+               void *ctx)
+{
+       int                         numkeys = 0;
+       struct openpgp_packet_list *packets = NULL;
+       struct openpgp_publickey   *key = NULL;
+       DIR                        *dir;
+       char                        keyfile[1024];
+       int                         fd = -1;
+       struct dirent              *curfile = NULL;
+
+       dir = opendir(config.db_dir);
+
+       if (dir != NULL) {
+               while ((curfile = readdir(dir)) != NULL) {
+                       if (curfile->d_name[0] == '0' &&
+                                       curfile->d_name[1] == 'x') {
+                               snprintf(keyfile, 1023, "%s/%s",
+                                               config.db_dir,
+                                               curfile->d_name);
+                               fd = open(keyfile, O_RDONLY);
+
+                               if (fd > -1) {
+                                       read_openpgp_stream(file_fetchchar,
+                                                       &fd,
+                                                       &packets,
+                                                       0);
+                                       parse_keys(packets, &key);
+
+                                       iterfunc(ctx, key);
+
+                                       free_publickey(key);
+                                       key = NULL;
+                                       free_packet_list(packets);
+                                       packets = NULL;
+                                       close(fd);
+                               }
+                               numkeys++;
+                       }
+               }
+               
+               closedir(dir);
+               dir = NULL;
+       }
+
+       return numkeys;
+}
+
+
 /**
  *     dumpdb - dump the key database
  *     @filenamebase: The base filename to use for the dump.