/*
* decodekey.c - Routines to further decode an OpenPGP key.
*
- * Jonathan McDowell <noodles@earth.li>
+ * Copyright 2002-2008 Jonathan McDowell <noodles@earth.li>
*
- * Copyright 2002 Project Purple
+ * This program is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc., 51
+ * Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
-#include <assert.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include "keyid.h"
#include "keystructs.h"
#include "ll.h"
+#include "log.h"
+#include "openpgp.h"
/*
* parse_subpackets - Parse the subpackets of a Type 4 signature.
* @data: The subpacket data.
- * @keyid: A pointer to where we should return the keyid.
+ * @keyid: A pointer to where we should return the keyid.
+ * @creationtime: A pointer to where we should return the creation time.
*
* This function parses the subkey data of a Type 4 signature and fills
* in the supplied variables. It also returns the length of the data
- * processed.
+ * processed. If the value of any piece of data is not desired a NULL
+ * can be passed instead of a pointer to a storage area for that value.
*/
-int parse_subpackets(unsigned char *data, uint64_t *keyid)
+int parse_subpackets(unsigned char *data, uint64_t *keyid, time_t *creation)
{
int offset = 0;
int length = 0;
int packetlen = 0;
- assert(data != NULL);
+ log_assert(data != NULL);
length = (data[0] << 8) + data[1] + 2;
packetlen <<= 8;
packetlen = data[offset++];
}
- switch (data[offset]) {
- case 2:
+ switch (data[offset] & 0x7F) {
+ case OPENPGP_SIGSUB_CREATION:
/*
- * Signature creation time. Might want to output this?
+ * Signature creation time.
*/
+ if (creation != NULL) {
+ *creation = data[offset + packetlen - 4];
+ *creation <<= 8;
+ *creation = data[offset + packetlen - 3];
+ *creation <<= 8;
+ *creation = data[offset + packetlen - 2];
+ *creation <<= 8;
+ *creation = data[offset + packetlen - 1];
+ }
break;
- case 0x83:
/*
* Signature expiration time. Might want to output this?
*/
break;
- case 16:
- *keyid = data[offset+packetlen - 8];
- *keyid <<= 8;
- *keyid += data[offset+packetlen - 7];
- *keyid <<= 8;
- *keyid += data[offset+packetlen - 6];
- *keyid <<= 8;
- *keyid += data[offset+packetlen - 5];
- *keyid <<= 8;
- *keyid += data[offset+packetlen - 4];
- *keyid <<= 8;
- *keyid += data[offset+packetlen - 3];
- *keyid <<= 8;
- *keyid += data[offset+packetlen - 2];
- *keyid <<= 8;
- *keyid += data[offset+packetlen - 1];
- break;
- case 23:
- /*
- * Key server preferences. Including no-modify.
- */
+ case OPENPGP_SIGSUB_ISSUER:
+ if (keyid != NULL) {
+ *keyid = data[offset+packetlen - 8];
+ *keyid <<= 8;
+ *keyid += data[offset+packetlen - 7];
+ *keyid <<= 8;
+ *keyid += data[offset+packetlen - 6];
+ *keyid <<= 8;
+ *keyid += data[offset+packetlen - 5];
+ *keyid <<= 8;
+ *keyid += data[offset+packetlen - 4];
+ *keyid <<= 8;
+ *keyid += data[offset+packetlen - 3];
+ *keyid <<= 8;
+ *keyid += data[offset+packetlen - 2];
+ *keyid <<= 8;
+ *keyid += data[offset+packetlen - 1];
+ }
break;
- case 25:
+ case OPENPGP_SIGSUB_EXPIRY:
+ case OPENPGP_SIGSUB_EXPORTABLE:
+ case OPENPGP_SIGSUB_TRUSTSIG:
+ case OPENPGP_SIGSUB_REGEX:
+ case OPENPGP_SIGSUB_KEYEXPIRY:
+ case OPENPGP_SIGSUB_PREFSYM:
+ case OPENPGP_SIGSUB_NOTATION:
+ case OPENPGP_SIGSUB_PREFHASH:
+ case OPENPGP_SIGSUB_PREFCOMPRESS:
+ case OPENPGP_SIGSUB_KEYSERVER:
+ case OPENPGP_SIGSUB_PRIMARYUID:
+ case OPENPGP_SIGSUB_POLICYURI:
+ case OPENPGP_SIGSUB_KEYFLAGS:
/*
- * Primary UID.
+ * Various subpacket types we know about, but don't
+ * currently handle. Some are candidates for being
+ * supported if we add signature checking support.
*/
break;
default:
/*
* We don't care about unrecognized packets unless bit
- * 7 is set in which case we prefer an error than
- * ignoring it.
+ * 7 is set in which case we log a major error.
*/
- assert(!(data[offset] & 0x80));
+ if (data[offset] & 0x80) {
+ logthing(LOGTHING_CRITICAL,
+ "Critical subpacket type not parsed: 0x%X",
+ data[offset]);
+ }
+
}
offset += packetlen;
}
}
/**
- * sig_keyid - Return the keyid for a given OpenPGP signature packet.
- * @packet: The signature packet.
+ * sig_info - Get info on a given OpenPGP signature packet
+ * @packet: The signature packet
+ * @keyid: A pointer for where to return the signature keyid
+ * @creation: A pointer for where to return the signature creation time
*
- * Returns the keyid for the supplied signature packet.
+ * Gets any info about a signature packet; parses the subpackets for a v4
+ * key or pulls the data directly from v2/3. NULL can be passed for any
+ * values which aren't cared about.
*/
-uint64_t sig_keyid(struct openpgp_packet *packet)
+void sig_info(struct openpgp_packet *packet, uint64_t *keyid, time_t *creation)
{
int length = 0;
- uint64_t keyid = 0;
if (packet != NULL) {
- keyid = 0;
switch (packet->data[0]) {
case 2:
case 3:
- keyid = packet->data[7];
- keyid <<= 8;
- keyid += packet->data[8];
- keyid <<= 8;
- keyid += packet->data[9];
- keyid <<= 8;
- keyid += packet->data[10];
- keyid <<= 8;
- keyid += packet->data[11];
- keyid <<= 8;
- keyid += packet->data[12];
- keyid <<= 8;
- keyid += packet->data[13];
- keyid <<= 8;
- keyid += packet->data[14];
+ if (keyid != NULL) {
+ *keyid = packet->data[7];
+ *keyid <<= 8;
+ *keyid += packet->data[8];
+ *keyid <<= 8;
+ *keyid += packet->data[9];
+ *keyid <<= 8;
+ *keyid += packet->data[10];
+ *keyid <<= 8;
+ *keyid += packet->data[11];
+ *keyid <<= 8;
+ *keyid += packet->data[12];
+ *keyid <<= 8;
+ *keyid += packet->data[13];
+ *keyid <<= 8;
+ *keyid += packet->data[14];
+ }
+ if (creation != NULL) {
+ *creation = packet->data[3];
+ *creation <<= 8;
+ *creation = packet->data[4];
+ *creation <<= 8;
+ *creation = packet->data[5];
+ *creation <<= 8;
+ *creation = packet->data[6];
+ }
break;
case 4:
length = parse_subpackets(&packet->data[4],
- &keyid);
+ keyid, creation);
parse_subpackets(&packet->data[length + 4],
- &keyid);
+ keyid, creation);
/*
* Don't bother to look at the unsigned packets.
*/
}
}
+ return;
+}
+
+/**
+ * sig_keyid - Return the keyid for a given OpenPGP signature packet.
+ * @packet: The signature packet.
+ *
+ * Returns the keyid for the supplied signature packet.
+ */
+uint64_t sig_keyid(struct openpgp_packet *packet)
+{
+ uint64_t keyid = 0;
+
+ sig_info(packet, &keyid, NULL);
+
return keyid;
}
+
/*
* TODO: Abstract out; all our linked lists should be generic and then we can
* llsize them.
char buf[1024];
char **uids = NULL;
int count = 0;
+
+ if (primary != NULL) {
+ *primary = NULL;
+ }
if (key != NULL && key->uids != NULL) {
uids = malloc((spsize(key->uids) + 1) * sizeof (char *));
curuid = key->uids;
while (curuid != NULL) {
buf[0] = 0;
- if (curuid->packet->tag == 13) {
+ if (curuid->packet->tag == OPENPGP_PACKET_UID) {
snprintf(buf, 1023, "%.*s",
(int) curuid->packet->length,
curuid->packet->data);
curuid = curuid -> next;
}
uids[count] = NULL;
- }
- /*
- * TODO: Parse subpackets for real primary ID (v4 keys)
- */
- if (primary != NULL) {
- *primary = uids[0];
+
+ /*
+ * TODO: Parse subpackets for real primary ID (v4 keys)
+ */
+ if (primary != NULL) {
+ *primary = uids[0];
+ }
}
return uids;
}
+
+/**
+ * keysubkeys - Takes a key and returns an array of its subkey keyids.
+ * @key: The key to get the subkeys of.
+ *
+ * keysubkeys takes a public key structure and returns an array of the
+ * subkey keyids for that key.
+ */
+uint64_t *keysubkeys(struct openpgp_publickey *key)
+{
+ struct openpgp_signedpacket_list *cursubkey = NULL;
+ uint64_t *subkeys = NULL;
+ int count = 0;
+
+ if (key != NULL && key->subkeys != NULL) {
+ subkeys = malloc((spsize(key->subkeys) + 1) *
+ sizeof (uint64_t));
+ cursubkey = key->subkeys;
+ while (cursubkey != NULL) {
+ get_packetid(cursubkey->packet, &subkeys[count++]);
+ cursubkey = cursubkey -> next;
+ }
+ subkeys[count] = 0;
+ }
+
+ return subkeys;
+}
projects / onak.git / blobdiff