cscvs to tla changeset 18

[onak.git] / merge.c

diff --git a/merge.c b/merge.c
index 8bfbd09eb227c41dbeea3c0afbf1de9f44824157..69543378e283f78fef4af9ee898eda2c57c32695 100644 (file)
--- a/merge.c
+++ b/merge.c
@@ -12,6 +12,7 @@
 
 #include "keydb.h"
 #include "keyid.h"
+#include "keyindex.h"
 #include "keystructs.h"
 #include "ll.h"
 #include "mem.h"
@@ -19,10 +20,11 @@
 
 /**
  *     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)
 {
@@ -30,6 +32,19 @@ 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.
@@ -53,6 +68,31 @@ 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.
@@ -135,7 +175,13 @@ int merge_packet_sigs(struct openpgp_signedpacket_list *old,
        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