#include <assert.h>
#include <stdbool.h>
#include <stdio.h>
+#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include "ll.h"
#include "stats.h"
-int parse_subpackets(unsigned char *data, bool html)
-{
- int offset = 0;
- int length = 0;
- int packetlen = 0;
- char *uid;
-
- assert(data != NULL);
-
- length = (data[0] << 8) + data[1] + 2;
-
- offset = 2;
- while (offset < length) {
- packetlen = data[offset++];
- if (packetlen > 191 && packetlen < 255) {
- packetlen = ((packetlen - 192) << 8) +
- data[offset++] + 192;
- } else if (packetlen == 255) {
- packetlen = data[offset++];
- packetlen <<= 8;
- packetlen = data[offset++];
- packetlen <<= 8;
- packetlen = data[offset++];
- packetlen <<= 8;
- packetlen = data[offset++];
- }
- switch (data[offset]) {
- case 2:
- /*
- * Signature creation time. Might want to output this?
- */
- break;
- case 16:
- uid = keyid2uid((data[offset+packetlen - 4] << 24) +
- (data[offset+packetlen - 3] << 16) +
- (data[offset+packetlen - 2] << 8) +
- data[offset+packetlen - 1]);
- if (html && uid != NULL) {
- printf("sig <a href=\"lookup?op=get&"
- "search=%02X%02X%02X%02X\">"
- "%02X%02X%02X%02X</a> "
- "<a href=\"lookup?op=vindex&"
- "search=0x%02X%02X%02X%02X\">"
- "%s</a>\n",
- data[offset+packetlen - 4],
- data[offset+packetlen - 3],
- data[offset+packetlen - 2],
- data[offset+packetlen - 1],
- data[offset+packetlen - 4],
- data[offset+packetlen - 3],
- data[offset+packetlen - 2],
- data[offset+packetlen - 1],
-
- data[offset+packetlen - 4],
- data[offset+packetlen - 3],
- data[offset+packetlen - 2],
- data[offset+packetlen - 1],
- txt2html(uid));
- } else if (html && uid == NULL) {
- printf("sig "
- "%02X%02X%02X%02X "
- "[User id not found]\n",
- data[offset+packetlen - 4],
- data[offset+packetlen - 3],
- data[offset+packetlen - 2],
- data[offset+packetlen - 1]);
- } else {
- printf("sig %02X%02X%02X%02X"
- " %s\n",
- data[offset+packetlen - 4],
- data[offset+packetlen - 3],
- data[offset+packetlen - 2],
- data[offset+packetlen - 1],
- (uid != NULL) ? uid :
- "[User id not found]");
- }
- break;
- default:
- /*
- * We don't care about unrecognized packets unless bit
- * 7 is set in which case we prefer an error than
- * ignoring it.
- */
- assert(!(data[offset] & 0x80));
- }
- offset += packetlen;
- }
-
- return length;
-}
-
int list_sigs(struct openpgp_packet_list *sigs, bool html)
{
int length = 0;
- char *uid;
+ char *uid = NULL;
+ uint64_t sigid = 0;
while (sigs != NULL) {
- switch (sigs->packet->data[0]) {
- case 2:
- case 3:
- uid = keyid2uid((sigs->packet->data[11] << 24) +
- (sigs->packet->data[12] << 16) +
- (sigs->packet->data[13] << 8) +
- sigs->packet->data[14]);
- if (html && uid != NULL) {
- printf("sig <a href=\"lookup?op=get&"
- "search=%02X%02X%02X%02X\">"
- "%02X%02X%02X%02X</a> "
- "<a href=\"lookup?op=vindex&"
- "search=0x%02X%02X%02X%02X\">"
- "%s</a>\n",
- sigs->packet->data[11],
- sigs->packet->data[12],
- sigs->packet->data[13],
- sigs->packet->data[14],
- sigs->packet->data[11],
- sigs->packet->data[12],
- sigs->packet->data[13],
- sigs->packet->data[14],
-
- sigs->packet->data[11],
- sigs->packet->data[12],
- sigs->packet->data[13],
- sigs->packet->data[14],
- txt2html(uid));
- } else if (html && uid == NULL) {
- printf("sig %02X%02X%02X%02X"
- " "
- "[User id not found]\n",
- sigs->packet->data[11],
- sigs->packet->data[12],
- sigs->packet->data[13],
- sigs->packet->data[14]);
- } else {
- printf("sig %02X%02X%02X%02X"
- " %s\n",
- sigs->packet->data[11],
- sigs->packet->data[12],
- sigs->packet->data[13],
- sigs->packet->data[14],
- (uid != NULL) ? uid :
- "[User id not found]");
- }
- break;
- case 4:
- length = parse_subpackets(&sigs->packet->data[4], html);
- parse_subpackets(&sigs->packet->data[length + 4], html);
- break;
- default:
- printf("sig [Unknown packet version %d]",
- sigs->packet->data[0]);
+ sigid = sig_keyid(sigs->packet);
+ uid = keyid2uid(sigid);
+ if (html && uid != NULL) {
+ printf("sig <a href=\"lookup?op=get&"
+ "search=%08llX\">%08llX</a> "
+ "<a href=\"lookup?op=vindex&search=0x%08llX\">"
+ "%s</a>\n",
+ sigid & 0xFFFFFFFF,
+ sigid & 0xFFFFFFFF,
+ sigid & 0xFFFFFFFF,
+ txt2html(uid));
+ } else if (html && uid == NULL) {
+ printf("sig %08llX "
+ "[User id not found]\n",
+ sigid & 0xFFFFFFFF);
+ } else {
+ printf("sig %08llX"
+ " %s\n",
+ sigid & 0xFFFFFFFF,
+ (uid != NULL) ? uid :
+ "[User id not found]");
+ }
+ if (uid != NULL) {
+ free(uid);
+ uid = NULL;
}
sigs = sigs->next;
}
snprintf(buf, 1023, "%.*s",
(int) uids->packet->length,
uids->packet->data);
- printf("uid %s\n",
+ printf("uid %s\n",
(html) ? txt2html(buf) : buf);
} else if (uids->packet->tag == 17) {
- printf("uid "
+ printf("uid "
"[photo id]\n");
}
if (verbose) {
if (html) {
puts("<pre>");
}
- puts("Type bits/keyID Date User ID");
+ puts("Type bits/keyID Date User ID");
while (keys != NULL) {
created_time = (keys->publickey->data[1] << 24) +
(keys->publickey->data[2] << 16) +
keys->publickey->data[0]);
}
- printf("pub %4d%c/%08X %04d/%02d/%02d ",
+ printf("pub %5d%c/%08X %04d/%02d/%02d ",
length,
(type == 1) ? 'R' : ((type == 17) ? 'D' : '?'),
(uint32_t) (get_keyid(keys) & 0xFFFFFFFF),
curuid->packet->data);
printf("%s\n", (html) ? txt2html(buf) : buf);
if (verbose) {
-
list_sigs(curuid->sigs, html);
}
curuid = curuid->next;
return 0;
}
-
-int get_subpackets_keyid(unsigned char *data, uint64_t *keyid)
+/*
+ * parse_subpackets - Parse the subpackets of a Type 4 signature.
+ * @data: The subpacket data.
+ * @keyid: A pointer to where we should return the keyid.
+ *
+ * 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.
+ */
+int parse_subpackets(unsigned char *data, uint64_t *keyid)
{
int offset = 0;
int length = 0;
* Signature creation time. Might want to output this?
*/
break;
+ case 0x83:
+ /*
+ * Signature expiration time. Might want to output this?
+ */
+ break;
case 16:
- *keyid = (data[offset+packetlen - 4] << 24) +
- (data[offset+packetlen - 3] << 16) +
- (data[offset+packetlen - 2] << 8) +
- data[offset+packetlen - 1];
- *keyid &= 0xFFFFFFFF;
+ *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.
+ */
+ break;
+ case 25:
+ /*
+ * Primary UID.
+ */
break;
default:
/*
return length;
}
-
/**
* keysigs - Return the sigs on a given OpenPGP signature list.
* @curll: The current linked list. Can be NULL to create a new list.
struct ll *keysigs(struct ll *curll,
struct openpgp_packet_list *sigs)
{
- int length = 0;
uint64_t keyid = 0;
while (sigs != NULL) {
+ keyid = sig_keyid(sigs->packet);
+ sigs = sigs->next;
+ curll = lladd(curll, createandaddtohash(keyid));
+ }
+
+ return curll;
+}
+
+/**
+ * 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)
+{
+ int length = 0;
+ uint64_t keyid = 0;
+
+ if (packet != NULL) {
keyid = 0;
- switch (sigs->packet->data[0]) {
+ switch (packet->data[0]) {
case 2:
case 3:
- keyid = sigs->packet->data[11] << 24;
- keyid += (sigs->packet->data[12] << 16);
- keyid += (sigs->packet->data[13] << 8);
- keyid += sigs->packet->data[14];
- keyid &= 0xFFFFFFFF;
+ 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];
break;
case 4:
- length = get_subpackets_keyid(&sigs->packet->data[4],
+ length = parse_subpackets(&packet->data[4],
&keyid);
- get_subpackets_keyid(&sigs->packet->data[length + 4],
+ parse_subpackets(&packet->data[length + 4],
&keyid);
/*
* Don't bother to look at the unsigned packets.
default:
break;
}
- sigs = sigs->next;
- curll = lladd(curll, createandaddtohash(keyid));
}
- return curll;
+ return keyid;
+}
+
+/*
+ * TODO: Abstract out; all our linked lists should be generic and then we can
+ * llsize them.
+ */
+int spsize(struct openpgp_signedpacket_list *list)
+{
+ int size = 0;
+ struct openpgp_signedpacket_list *cur;
+
+ for (cur = list; cur != NULL; cur = cur->next, size++) ;
+
+ return size;
+}
+
+/**
+ * keyuids - Takes a key and returns an array of its UIDs
+ * @key: The key to get the uids of.
+ * @primary: A pointer to store the primary UID in.
+ *
+ * keyuids takes a public key structure and builds an array of the UIDs
+ * on the key. It also attempts to work out the primary UID and returns a
+ * separate pointer to that particular element of the array.
+ */
+char **keyuids(struct openpgp_publickey *key, char **primary)
+{
+ struct openpgp_signedpacket_list *curuid = NULL;
+ char buf[1024];
+ char **uids = NULL;
+ int count = 0;
+
+ 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) {
+ snprintf(buf, 1023, "%.*s",
+ (int) curuid->packet->length,
+ curuid->packet->data);
+ uids[count++] = strdup(buf);
+ }
+ curuid = curuid -> next;
+ }
+ uids[count] = NULL;
+ }
+ /*
+ * TODO: Parse subpackets for real primary ID (v4 keys)
+ */
+ if (primary != NULL) {
+ *primary = uids[0];
+ }
+
+ return uids;
}
projects / onak.git / blobdiff