X-Git-Url: https://git.sommitrealweird.co.uk/onak.git/blobdiff_plain/e02c731dfbb288c736f2cd09a9b6df0507c59ddd..bf52d4344cd29ab86c1d5981d2ea4d1717eb2f84:/merge.c?ds=inline diff --git a/merge.c b/merge.c index 8bfbd09..4379596 100644 --- a/merge.c +++ b/merge.c @@ -3,26 +3,29 @@ * * Jonathan McDowell * - * Copyright 2002 Project Purple + * Copyright 2002-2005 Project Purple */ -#include #include #include +#include +#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) { @@ -30,6 +33,28 @@ 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) +{ + if (a->data[0] != b->data[0]) { + /* Different signature versions, so not the same */ + return false; + } else if (a->data[0] == 4 && a->data[1] != b->data[1]) { + /* Type 4 signature, but different types */ + return false; + /* TODO: Check signature time? */ + } else { + 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 +78,31 @@ 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. @@ -105,7 +155,9 @@ bool remove_signed_packet(struct openpgp_signedpacket_list **packet_list, if (cur->next == NULL) { *list_end = prev; } - // TODO: Free the removed signed packet... + /* + * TODO: Free the removed signed packet... + */ } prev = cur; } @@ -130,12 +182,18 @@ 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 @@ -144,7 +202,7 @@ 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; @@ -269,7 +327,7 @@ 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; @@ -303,72 +361,3 @@ int merge_keys(struct openpgp_publickey *a, struct openpgp_publickey *b) 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; -}