X-Git-Url: https://git.sommitrealweird.co.uk/onak.git/blobdiff_plain/c7f25997d3d36ac30b26f663e1d257e4625662a1..061e8cae3c4e66b80d2e71048dd037f0443c82cf:/parsekey.c

diff --git a/parsekey.c b/parsekey.c
index ea56f83..35c14c0 100644
--- a/parsekey.c
+++ b/parsekey.c
@@ -5,7 +5,7 @@
  *
  * Copyright 2002 Project Purple
  *
- * $Id: parsekey.c,v 1.11 2003/09/30 16:58:04 noodles Exp $
+ * $Id: parsekey.c,v 1.15 2003/10/03 23:24:16 noodles Exp $
  */
 
 #include <assert.h>
@@ -162,6 +162,7 @@ int debug_packet(struct openpgp_packet *packet)
  *	@getchar_func: The function to get the next character from the stream.
  *	@ctx: A pointer to the context structure for getchar_func.
  *	@packets: The outputted list of packets.
+ *	@maxnum: The maximum number of keys to read. 0 means unlimited.
  *
  *	This function uses getchar_func to read characters from an OpenPGP
  *	packet stream and reads the packets into a linked list of packets
@@ -170,21 +171,26 @@ int debug_packet(struct openpgp_packet *packet)
 int read_openpgp_stream(int (*getchar_func)(void *ctx, size_t count,
 				unsigned char *c),
 				void *ctx,
-				struct openpgp_packet_list **packets)
+				struct openpgp_packet_list **packets,
+				int maxnum)
 {
 	unsigned char			 curchar = 0;
 	unsigned long			 count = 0;
 	struct openpgp_packet_list	*curpacket = NULL;
 	int				 rc = 0;
+	int				 keys = 0;
 	bool				 inpacket = false;
 
 	assert(packets != NULL);
 	curpacket = *packets;
-	while (curpacket->next != NULL) {
-		curpacket = curpacket->next;
+	if (curpacket != NULL) {
+		while (curpacket->next != NULL) {
+			curpacket = curpacket->next;
+		}
 	}
 
-	while (!rc && !getchar_func(ctx, 1, &curchar)) {
+	while (!rc && (maxnum == 0 || keys < maxnum) &&
+			!getchar_func(ctx, 1, &curchar)) {
 		if (!inpacket && (curchar & 0x80)) {
 			/*
 			 * New packet. Record the fact we're in a packet and
@@ -225,7 +231,7 @@ int read_openpgp_stream(int (*getchar_func)(void *ctx, size_t count,
 					curpacket->packet->length < 255) {
 					logthing(LOGTHING_NOTICE,
 						"Partial length;"
-						" not supported.\n");
+						" not supported.");
 				} else if (curpacket->packet->length == 255) {
 					/*
 					 * 5 byte length; ie 255 followed by 3
@@ -281,6 +287,9 @@ int read_openpgp_stream(int (*getchar_func)(void *ctx, size_t count,
 			}
 
 			if (rc == 0) {
+				if (curpacket->packet->tag == 6) {
+					keys++;
+				}
 				curpacket->packet->data =
 					malloc(curpacket->packet->length *
 					sizeof(unsigned char));