X-Git-Url: https://git.sommitrealweird.co.uk/onak.git/blobdiff_plain/42d43e0ec08e249cecf74ec448cb6405b3c89d84..a241edc87bed49d6bc5dc3c4c99786a921ae7c8a:/photoid.c

diff --git a/photoid.c b/photoid.c
index 4416e3e..febc3f5 100644
--- a/photoid.c
+++ b/photoid.c
@@ -1,14 +1,22 @@
 /*
  * photoid.c - Routines for OpenPGP id photos.
  *
- * Jonathan McDowell <noodles@earth.li>
+ * Copyright 2004 Jonathan McDowell <noodles@earth.li>
  *
- * Copyright 2004 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: photoid.c,v 1.1 2004/05/27 01:25:37 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 <inttypes.h>
 #include <stdbool.h>
 #include <stdio.h>
@@ -17,30 +25,62 @@
 #include "keyid.h"
 #include "keyindex.h"
 #include "keystructs.h"
+#include "log.h"
+#include "photoid.h"
 
 /**
  * 	getphoto - returns an OpenPGP packet containing a photo id.
  * 	@key: The key to return the photo id from.
  * 	@index: The index of the photo to return.
+ * 	@photo: The photo data.
+ * 	@length: The length of the photo data.
  *
- * 	This function returns the OpenPGP packet containing a photo id from a
- * 	supplied key. index specifies which photo id should be returned. If
- * 	there's no such photo id NULL is returned.
+ * 	This function returns the photo data contained in a supplied key.
+ * 	index specifies which photo id should be returned. If there's no such
+ * 	photo id NULL is returned. The returned data pointer refers to the key
+ * 	data supplied rather than a copy of it.
  */
-struct openpgp_packet *getphoto(struct openpgp_publickey *key, int index)
+int getphoto(struct openpgp_publickey *key, int index, unsigned char **photo,
+		size_t *length)
 {
 	struct openpgp_signedpacket_list *curuid = NULL;
-	struct openpgp_packet            *photo = NULL;
 	int                               i = 0;
+	int                               j = 0;
 
-	assert(key != NULL);
+	log_assert(key != NULL);
+	log_assert(photo != NULL);
+	log_assert(length != NULL);
 
+	*photo = NULL;
+	
 	curuid = key->uids;
 	i = 0;
-	while (photo == NULL && curuid != NULL && i <= index) {
+	while (*photo == NULL && curuid != NULL && i <= index) {
 		if (curuid->packet->tag == 17) {
 			if (i == index) {
-				photo = curuid->packet;
+				j = 0;
+				*length = curuid->packet->data[j++];
+				if (*length < 192) {
+					/* length is correct */
+				} else if (*length < 255) {
+					*length -= 192;
+					*length <<= 8;
+					*length += curuid->packet->data[j++];
+					*length +=  192;
+				} else {
+					*length = curuid->packet->data[j++];
+					*length <<= 8;
+					*length += curuid->packet->data[j++];
+					*length <<= 8;
+					*length += curuid->packet->data[j++];
+					*length <<= 8;
+					*length += curuid->packet->data[j++];
+				}
+				logthing(LOGTHING_DEBUG, "Got photo, size %d",
+						*length);
+				j++;
+				*length -= 17;
+				*photo = &(curuid->packet->data[j+16]);
 			} else {
 				i++;
 			}
@@ -48,5 +88,5 @@ struct openpgp_packet *getphoto(struct openpgp_publickey *key, int index)
 		curuid = curuid->next;
 	}
 
-	return photo;
+	return (*photo != NULL);
 }