Switch debian build system to dh

[onak.git] / decodekey.c

diff --git a/decodekey.c b/decodekey.c
index 5818488b766a92a9ad98dc595277097ecc0695f0..b4f7ceb46781d45f376385c4cea0ac42affffb63 100644 (file)
--- a/decodekey.c
+++ b/decodekey.c
@@ -1,14 +1,22 @@
 /*
  * decodekey.c - Routines to further decode an OpenPGP key.
  *
 /*
  * 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.

  *
  *

- * $Id: decodekey.c,v 1.6 2004/05/27 03:24:01 noodles Exp $
+ * 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 <stdbool.h>
 #include <stdio.h>
 #include <stdlib.h>


@@ -21,23 +29,26 @@
 #include "keystructs.h"
 #include "ll.h"
 #include "log.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.
 
 /*
  *     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
  *
  *     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;
 
 {
        int offset = 0;
        int length = 0;
        int packetlen = 0;
 

-       assert(data != NULL);
+       log_assert(data != NULL);

 
        length = (data[0] << 8) + data[1] + 2;
 
 
        length = (data[0] << 8) + data[1] + 2;
 


@@ -57,47 +68,60 @@ int parse_subpackets(unsigned char *data, uint64_t *keyid)
                        packetlen = data[offset++];
                }
                switch (data[offset] & 0x7F) {
                        packetlen = data[offset++];
                }
                switch (data[offset] & 0x7F) {

-               case 2:
+               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;
                        break;

-               case 3:

                        /*
                         * Signature expiration time. Might want to output this?
                         */
                        break;
                        /*
                         * 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 20:
-                       /*
-                        * Annotation data.
-                        */
-                       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;
                        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:
                         */
                        break;
                default:


@@ -141,42 +165,55 @@ struct ll *keysigs(struct ll *curll,
 }
 
 /**
 }
 
 /**

- *     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;
 {
        int length = 0;

-       uint64_t keyid = 0;

        
        if (packet != NULL) {
        
        if (packet != NULL) {

-               keyid = 0;

                switch (packet->data[0]) {
                case 2:
                case 3:
                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],
                        break;
                case 4:
                        length = parse_subpackets(&packet->data[4],

-                                       &keyid);
+                                       keyid, creation);

                        parse_subpackets(&packet->data[length + 4],
                        parse_subpackets(&packet->data[length + 4],

-                                       &keyid);
+                                       keyid, creation);

                        /*
                         * Don't bother to look at the unsigned packets.
                         */
                        /*
                         * Don't bother to look at the unsigned packets.
                         */


@@ -186,9 +223,25 @@ uint64_t sig_keyid(struct openpgp_packet *packet)
                }
        }
 
                }
        }
 

+       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;
 }
 
        return keyid;
 }
 

+

 /*
  * TODO: Abstract out; all our linked lists should be generic and then we can
  * llsize them.
 /*
  * TODO: Abstract out; all our linked lists should be generic and then we can
  * llsize them.


@@ -229,7 +282,7 @@ char **keyuids(struct openpgp_publickey *key, char **primary)
                curuid = key->uids;
                while (curuid != NULL) {
                        buf[0] = 0;
                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);
                                snprintf(buf, 1023, "%.*s",
                                                (int) curuid->packet->length,
                                                curuid->packet->data);


@@ -262,16 +315,16 @@ uint64_t *keysubkeys(struct openpgp_publickey *key)
        struct openpgp_signedpacket_list *cursubkey = NULL;
        uint64_t                         *subkeys = NULL;
        int                               count = 0;
        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) {
        if (key != NULL && key->subkeys != NULL) {
                subkeys = malloc((spsize(key->subkeys) + 1) *
                                sizeof (uint64_t));
                cursubkey = key->subkeys;
                while (cursubkey != NULL) {

-                       subkeys[count++] = get_packetid(cursubkey->packet);
+                       get_packetid(cursubkey->packet, &subkeys[count++]);

                        cursubkey = cursubkey -> next;
                }
                        cursubkey = cursubkey -> next;
                }

-               subkeys[count] = NULL;
+               subkeys[count] = 0;

        }
 
        return subkeys;
        }
 
        return subkeys;