X-Git-Url: https://git.sommitrealweird.co.uk/onak.git/blobdiff_plain/c7f25997d3d36ac30b26f663e1d257e4625662a1..aabf2c1bd3e37fb70b674dba243f927069909534:/parsekey.c

diff --git a/parsekey.c b/parsekey.c
index ea56f83..0367e2d 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 1.20 2004/05/27 21:55:38 noodles Exp $
  */
 
 #include <assert.h>
@@ -21,20 +21,6 @@
 #include "mem.h"
 #include "parsekey.h"
 
-/**
- *	add_key - Takes a key and adds it to the keyserver.
- *	@key: The public key to add.
- *
- *	This function takes a public key and adds it to the keyserver.
- *	It first of all sees if we already have the key locally. If we do then
- *	we retrieve it and merge the two keys. We then store the resulting key
- *	(or just the original we received if we don't already have it). We then
- *	send out the appropriate updates to our keyserver peers.
- */
-int add_key(struct openpgp_publickey *key) {
-	return 0;
-}
-
 /**
  *	parse_keys - Process a stream of packets for public keys + sigs.
  *	@packets: The packet list to parse.
@@ -149,7 +135,7 @@ int parse_keys(struct openpgp_packet_list *packets,
  */
 int debug_packet(struct openpgp_packet *packet)
 {
-	printf("\tNew format: %d, Tag: %d, Length: %d\n",
+	printf("\tNew format: %d, Tag: %u, Length: %d\n",
 			packet->newformat,
 			packet->tag,
 			packet->length);
@@ -162,6 +148,7 @@ 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
@@ -170,28 +157,31 @@ 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
 			 * allocate memory for it.
 			 */
 			inpacket = true;
-			count = 0;
 			if (curpacket != NULL) {
 				curpacket->next = malloc(sizeof (*curpacket));
 				curpacket = curpacket->next;
@@ -225,7 +215,7 @@ 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
@@ -235,13 +225,13 @@ int read_openpgp_stream(int (*getchar_func)(void *ctx, size_t count,
 					curpacket->packet->length = curchar;
 					curpacket->packet->length <<= 8;
 					rc = getchar_func(ctx, 1, &curchar);
-					curpacket->packet->length = curchar;
+					curpacket->packet->length += curchar;
 					curpacket->packet->length <<= 8;
 					rc = getchar_func(ctx, 1, &curchar);
-					curpacket->packet->length = curchar;
+					curpacket->packet->length += curchar;
 					curpacket->packet->length <<= 8;
 					rc = getchar_func(ctx, 1, &curchar);
-					curpacket->packet->length = curchar;
+					curpacket->packet->length += curchar;
 				}
 			} else {
 				curpacket->packet->tag = (curchar & 0x3C) >> 2;
@@ -281,6 +271,9 @@ 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));
@@ -299,6 +292,7 @@ int read_openpgp_stream(int (*getchar_func)(void *ctx, size_t count,
 		} else {
 			logthing(LOGTHING_ERROR, "Unexpected character: 0x%X",
 				curchar);
+			rc = 1;
 		}
 	}
 
@@ -340,6 +334,28 @@ int write_openpgp_stream(int (*putchar_func)(void *ctx, size_t count,
 				curchar = (packets->packet->length - 192) &
 					 0xFF;
 				putchar_func(ctx, 1, &curchar);
+			} else if (packets->packet->length > 8382 &&
+				packets->packet->length < 0xFFFFFFFF) {
+				logthing(LOGTHING_DEBUG,
+					"Writing 5 byte length");
+				curchar = 255;
+				putchar_func(ctx, 1, &curchar);
+				
+				curchar = (packets->packet->length >> 24);
+				curchar &= 0xFF;
+				putchar_func(ctx, 1, &curchar);
+				
+				curchar = (packets->packet->length >> 16);
+				curchar &= 0xFF;
+				putchar_func(ctx, 1, &curchar);
+				
+				curchar = (packets->packet->length >> 8);
+				curchar &= 0xFF;
+				putchar_func(ctx, 1, &curchar);
+				
+				curchar = packets->packet->length;
+				curchar &= 0xFF;
+				putchar_func(ctx, 1, &curchar);
 			} else {
 				logthing(LOGTHING_ERROR,
 					"Unsupported new format length.");