Add subkey support to keydb_fs backend.

[onak.git] / parsekey.c

diff --git a/parsekey.c b/parsekey.c
index ea56f835282905c905b8194db8884cfd83438c07..fb9cf83e25b0ce33c0a0a4b2e454cebd04c179d6 100644 (file)
--- a/parsekey.c
+++ b/parsekey.c
@@ -4,8 +4,6 @@
  * Jonathan McDowell <noodles@earth.li>
  *
  * Copyright 2002 Project Purple
- *
- * $Id: parsekey.c,v 1.11 2003/09/30 16:58:04 noodles Exp $
  */
 
 #include <assert.h>
@@ -21,20 +19,6 @@
 #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 +133,7 @@ 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 +146,7 @@ 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 +155,31 @@ 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 +213,7 @@ 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 +223,13 @@ 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 +269,9 @@ 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 +290,7 @@ 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 +332,28 @@ 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.");