X-Git-Url: https://git.sommitrealweird.co.uk/onak.git/blobdiff_plain/8bb45b1dfe6b5b30d89f154c16fb3eb8c049f496..81e4d3b012b8c17ab17215a2f904a5742e41886d:/parsekey.c diff --git a/parsekey.c b/parsekey.c index a2ff578..0367e2d 100644 --- a/parsekey.c +++ b/parsekey.c @@ -4,6 +4,8 @@ * Jonathan McDowell * * Copyright 2002 Project Purple + * + * $Id: parsekey.c,v 1.20 2004/05/27 21:55:38 noodles Exp $ */ #include @@ -15,23 +17,10 @@ #include "keyid.h" #include "keystructs.h" #include "ll.h" +#include "log.h" #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. @@ -126,7 +115,8 @@ int parse_keys(struct openpgp_packet_list *packets, */ break; default: - fprintf(stderr, "Unsupported packet type: %d\n", + logthing(LOGTHING_ERROR, + "Unsupported packet type: %d", packets->packet->tag); } packets = packets->next; @@ -145,7 +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); @@ -158,6 +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 @@ -166,24 +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; + 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; @@ -199,7 +197,9 @@ int read_openpgp_stream(int (*getchar_func)(void *ctx, size_t count, curpacket->packet->newformat = (curchar & 0x40); - // TODO: Better error checking on getchar_func. + /* + * TODO: Better error checking on getchar_func. + */ if (curpacket->packet->newformat) { curpacket->packet->tag = (curchar & 0x3F); rc = getchar_func(ctx, 1, &curchar); @@ -213,7 +213,9 @@ int read_openpgp_stream(int (*getchar_func)(void *ctx, size_t count, curpacket->packet->length += 192; } else if (curpacket->packet->length > 223 && curpacket->packet->length < 255) { - printf("Partial length; not supported.\n"); + logthing(LOGTHING_NOTICE, + "Partial length;" + " not supported."); } else if (curpacket->packet->length == 255) { /* * 5 byte length; ie 255 followed by 3 @@ -223,13 +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; @@ -259,19 +261,38 @@ int read_openpgp_stream(int (*getchar_func)(void *ctx, size_t count, curpacket->packet->length += curchar; break; case 3: - fprintf(stderr, "Unsupported length type 3.\n"); + logthing(LOGTHING_ERROR, + "Unsupported length type 3."); + curpacket->packet->length = 0; + curpacket->packet->data = NULL; + rc = -1; break; } } - curpacket->packet->data = - malloc(curpacket->packet->length * + + if (rc == 0) { + if (curpacket->packet->tag == 6) { + keys++; + } + curpacket->packet->data = + malloc(curpacket->packet->length * sizeof(unsigned char)); - rc = getchar_func(ctx, curpacket->packet->length, - curpacket->packet->data); + if (curpacket->packet->data == NULL) { + logthing(LOGTHING_ERROR, + "Can't allocate memory for " + "packet!"); + rc = -1; + } else { + rc = getchar_func(ctx, + curpacket->packet->length, + curpacket->packet->data); + } + } inpacket = false; } else { - fprintf(stderr, "Unexpected character: 0x%X\n", + logthing(LOGTHING_ERROR, "Unexpected character: 0x%X", curchar); + rc = 1; } } @@ -313,8 +334,31 @@ 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 { - fputs("Unsupported new format length.\n", stderr); + logthing(LOGTHING_ERROR, + "Unsupported new format length."); } } else { curchar |= (packets->packet->tag << 2); @@ -343,10 +387,8 @@ int write_openpgp_stream(int (*putchar_func)(void *ctx, size_t count, } } - putchar_func(ctx, packets->packet->length, packets->packet->data); -// for (i = 0; i < packets->packet->length; i++) { -// putchar_func(ctx, packets->packet->data[i]); -// } + putchar_func(ctx, packets->packet->length, + packets->packet->data); packets = packets->next; } return 0;