Move dumpdb over to using iterate_keys.

[onak.git] / merge.c

diff --git a/merge.c b/merge.c
index c1410e175cdb4afa7b404c38d990a7294619d9ad..95abbbafbf8d6e663367d34fc68c9ff7e638ccee 100644 (file)
--- a/merge.c
+++ b/merge.c
@@ -3,25 +3,29 @@
  *
  * Jonathan McDowell <noodles@earth.li>
  *
- * Copyright 2002 Project Purple
+ * Copyright 2002-2004 Project Purple
  */
 
-#include <assert.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
 
+#include "decodekey.h"
+#include "keydb.h"
 #include "keyid.h"
 #include "keystructs.h"
 #include "ll.h"
+#include "log.h"
 #include "mem.h"
 #include "merge.h"
 
 /**
  *     compare_packets - Check to see if 2 OpenPGP packets are the same.
- *     @a: The first key to compare.
- *     @b: The second key to compare.
+ *     @a: The first packet to compare.
+ *     @b: The second packet to compare.
  *
- *     Takes 2 keys and returns true if they are the same and false otherwise.
+ *     Takes 2 packets and returns true if they are the same and false
+ *     otherwise.
  */
 bool compare_packets(struct openpgp_packet *a, struct openpgp_packet *b)
 {
@@ -29,6 +33,19 @@ bool compare_packets(struct openpgp_packet *a, struct openpgp_packet *b)
                !memcmp(a->data, b->data, b->length));
 }
 
+/**
+ *     compare_signatures - Check to see if 2 OpenPGP signatures are the same.
+ *     @a: The first signature to compare.
+ *     @b: The second signature to compare.
+ *
+ *     Takes 2 signature packets and returns true if they are the same and
+ *     false otherwise.
+ */
+bool compare_signatures(struct openpgp_packet *a, struct openpgp_packet *b)
+{
+       return (sig_keyid(a) == sig_keyid(b));
+}
+
 /**
  *     find_packet - Checks to see if an OpenPGP packet exists in a list.
  *     @packet_list: The list of packets to look in.
@@ -52,6 +69,31 @@ bool find_packet(struct openpgp_packet_list *packet_list,
        return found;
 }
 
+/**
+ *     find_signature - Checks to see if an OpenPGP signature exists in a list.
+ *     @packet_list: The list of packets to look in.
+ *     @packet: The signature to look for.
+ *
+ *     Walks through the packet_list checking to see if the signature given is
+ *     present in it. Returns a pointer to it if it is, NULL otherwise.
+ *
+ */
+struct openpgp_packet_list *find_signature(
+                       struct openpgp_packet_list *packet_list,
+                       struct openpgp_packet *packet)
+{
+       struct openpgp_packet_list *found = NULL;
+
+       while (!found && packet_list != NULL) {
+               if (compare_signatures(packet_list->packet, packet)) {
+                       found = packet_list;
+               }
+               packet_list = packet_list -> next;
+       }
+
+       return found;
+}
+
 /**
  *     get_signed_packet - Gets a signed packet from a list.
  *     @packet_list: The list of packets to look in.
@@ -104,7 +146,11 @@ bool remove_signed_packet(struct openpgp_signedpacket_list **packet_list,
                        if (cur->next == NULL) {
                                *list_end = prev;
                        }
+                       /*
+                        * TODO: Free the removed signed packet...
+                        */
                }
+               prev = cur;
        }
 
        return found;
@@ -127,12 +173,18 @@ int merge_packet_sigs(struct openpgp_signedpacket_list *old,
        struct openpgp_packet_list      *curpacket = NULL;
        struct openpgp_packet_list      *nextpacket = NULL;
 
-       assert(compare_packets(old->packet, new->packet));
+       log_assert(compare_packets(old->packet, new->packet));
 
        curpacket = new->sigs;
        while (curpacket != NULL) {
                nextpacket = curpacket->next;
-               if (find_packet(old->sigs, curpacket->packet)) {
+               /*
+                * TODO: We should be checking the signature and then
+                * potentially merging/replacing it depending on the subpackets
+                * really. For now this stops us adding the same one twice
+                * however.
+                */ 
+               if (find_signature(old->sigs, curpacket->packet)) {
                        /*
                         * We already have this sig, remove it from the
                         * difference list and free the memory allocated for
@@ -141,7 +193,7 @@ int merge_packet_sigs(struct openpgp_signedpacket_list *old,
                        if (lastpacket != NULL) {
                                lastpacket->next = curpacket->next;
                        } else {
-                               assert(curpacket == new->sigs);
+                               log_assert(curpacket == new->sigs);
                                new->sigs = curpacket->next;
                        }
                        curpacket->next = NULL;
@@ -191,25 +243,29 @@ int merge_signed_packets(struct openpgp_signedpacket_list **old,
                        if (newelem->sigs == NULL) {
                                remove_signed_packet(new,
                                                new_end,
-                                               curelem->packet);
+                                               newelem->packet);
                        }
                }
        }
 
        /*
-        * If *new != NULL now then there are UIDs on the new key that weren't
-        * on the old key. Add them.
+        * If *new != NULL now then there might be UIDs on the new key that
+        * weren't on the old key. Walk through them, checking if the UID is
+        * on the old key and if not adding them to it.
         */
        for (curelem = *new; curelem != NULL;
                        curelem = curelem->next) {
-               ADD_PACKET_TO_LIST((*old_end),
+
+               if (find_signed_packet(*old, curelem->packet) == NULL) {
+                       ADD_PACKET_TO_LIST((*old_end),
                                packet_dup(curelem->packet));
-               if (*old == NULL) {
-                       *old = *old_end;
-               }
-               packet_list_add(&(*old_end)->sigs,
+                       if (*old == NULL) {
+                               *old = *old_end;
+                       }
+                       packet_list_add(&(*old_end)->sigs,
                                &(*old_end)->last_sig,
                                curelem->sigs);
+               }
        }
 
        return 0;
@@ -262,7 +318,7 @@ int merge_keys(struct openpgp_publickey *a, struct openpgp_publickey *b)
                                if (lastpacket != NULL) {
                                        lastpacket->next = curpacket->next;
                                } else {
-                                       assert(curpacket == b->revocations);
+                                       log_assert(curpacket == b->revocations);
                                        b->revocations = curpacket->next;
                                }
                                curpacket->next = NULL;
@@ -289,7 +345,7 @@ int merge_keys(struct openpgp_publickey *a, struct openpgp_publickey *b)
                 */
                merge_signed_packets(&a->uids, &a->last_uid, 
                                &b->uids, &b->last_uid);
-               merge_signed_packets(&a->subkeys, &a->last_uid,
+               merge_signed_packets(&a->subkeys, &a->last_subkey,
                                &b->subkeys, &b->last_subkey);
 
        }