/*
* decodekey.c - Routines to further decode an OpenPGP key.
*
- * Jonathan McDowell <noodles@earth.li>
- *
- * Copyright 2002 Project Purple
+ * Copyright 2002-2008 Jonathan McDowell <noodles@earth.li>
*/
#include <stdbool.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;
switch (data[offset] & 0x7F) {
case 2:
/*
- * 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 3:
/*
* Signature expiration time. Might want to output this?
*/
break;
+ case 6:
+ /*
+ * Regular expression for UIDs this sig is over.
+ */
+ 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];
+ 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 20:
/*
* Primary UID.
*/
break;
+ case 26:
+ /*
+ * Policy URI.
+ */
+ break;
default:
/*
* We don't care about unrecognized packets unless bit
}
/**
- * 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.
projects / onak.git / blobdiff