X-Git-Url: https://git.sommitrealweird.co.uk/onak.git/blobdiff_plain/4b8483ae278577a3adc8d84da81d77019704466f..200b89a2c66c58c41a27883f021850445698b337:/merge.c

diff --git a/merge.c b/merge.c
index c1410e1..8bfbd09 100644
--- a/merge.c
+++ b/merge.c
@@ -10,6 +10,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 
+#include "keydb.h"
 #include "keyid.h"
 #include "keystructs.h"
 #include "ll.h"
@@ -104,7 +105,9 @@ 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;
@@ -191,25 +194,29 @@ 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;
@@ -289,10 +296,79 @@ 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);
 
 	}
 
 	return rc;
 }
+
+/**
+ *	update_keys - Takes a list of public keys and updates them in the DB.
+ *	@keys: The keys to update in the DB.
+ *	@verbose: Should we output more information as we add keys?
+ *
+ *	Takes a list of keys and adds them to the database, merging them with
+ *	the key in the database if it's already present there. The key list is
+ *	update to contain the minimum set of updates required to get from what
+ *	we had before to what we have now (ie the set of data that was added to
+ *	the DB). Returns the number of entirely new keys added.
+ */
+int update_keys(struct openpgp_publickey **keys, bool verbose)
+{
+	struct openpgp_publickey *curkey = NULL;
+	struct openpgp_publickey *oldkey = NULL;
+	struct openpgp_publickey *prev = NULL;
+	int newkeys = 0;
+	bool intrans;
+
+	for (curkey = *keys; curkey != NULL; curkey = curkey->next) {
+		intrans = starttrans();
+		if (verbose) {
+			fprintf(stderr, "Fetching key 0x%llX, result: %d\n",
+				get_keyid(curkey),
+				fetch_key(get_keyid(curkey), &oldkey, intrans));
+		} else {
+			fetch_key(get_keyid(curkey), &oldkey, intrans);
+		}
+
+		/*
+		 * If we already have the key stored in the DB then merge it
+		 * with the new one that's been supplied. Otherwise the key
+		 * we've just got is the one that goes in the DB and also the
+		 * one that we send out.
+		 */
+		if (oldkey != NULL) {
+			merge_keys(oldkey, curkey);
+			if (curkey->revocations == NULL &&
+					curkey->uids == NULL &&
+					curkey->subkeys == NULL) {
+				if (prev == NULL) {
+					*keys = curkey->next;
+				} else {
+					prev->next = curkey->next;
+					prev = curkey->next;
+				}
+			} else {
+				prev = curkey;
+				if (verbose) {
+					fprintf(stderr, "Merged key; storing updated key.\n");
+				}
+				store_key(oldkey, intrans, true);
+			}
+			free_publickey(oldkey);
+			oldkey = NULL;
+		} else {
+			if (verbose) {
+				fprintf(stderr, "Storing completely new key.\n");
+			}
+			store_key(curkey, intrans, false);
+			newkeys++;
+		}
+		endtrans();
+		intrans = false;
+	}
+
+	return newkeys;
+}