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/*
* gpgwww.c - www interface to path finder.
*
* Jonathan McDowell <noodles@earth.li>
*
* Copyright 2001-2002 Project Purple.
*/
#include <inttypes.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "armor.h"
#include "charfuncs.h"
#include "cleanup.h"
#include "config.h"
#include "getcgi.h"
#include "hash.h"
#include "keydb.h"
#include "log.h"
#include "mem.h"
#include "onak-conf.h"
#include "parsekey.h"
#include "stats.h"
#define OP_UNKNOWN 0
#define OP_GET 1
int parsecgistuff(char **cgiparams, uint64_t *from, uint64_t *to)
{
int i = 0;
int op = OP_UNKNOWN;
if (cgiparams != NULL) {
i = 0;
while (cgiparams[i] != NULL) {
if (!strcmp(cgiparams[i], "to")) {
*to = strtoul(cgiparams[i+1], NULL, 16);
} else if (!strcmp(cgiparams[i], "from")) {
*from = strtoul(cgiparams[i+1], NULL, 16);
} else if (!strcmp(cgiparams[i], "op")) {
if (!strcmp(cgiparams[i+1], "get")) {
op = OP_GET;
}
}
i += 2;
}
}
return op;
}
int getkeyspath(uint64_t have, uint64_t want, int count)
{
struct openpgp_publickey *publickey = NULL;
struct openpgp_packet_list *packets = NULL;
struct openpgp_packet_list *list_end = NULL;
struct stats_key *keyinfoa, *keyinfob, *curkey;
uint64_t fullhave, fullwant;
int rec;
int pathlen = 0;
fullhave = config.dbbackend->getfullkeyid(have);
fullwant = config.dbbackend->getfullkeyid(want);
/*
* Make sure the keys we have and want are in the cache.
*/
config.dbbackend->cached_getkeysigs(fullhave);
config.dbbackend->cached_getkeysigs(fullwant);
if ((keyinfoa = findinhash(fullhave)) == NULL) {
return 1;
}
if ((keyinfob = findinhash(fullwant)) == NULL) {
return 1;
}
while ((!cleanup()) && (pathlen < count)) {
/*
* Fill the tree info up.
*/
initcolour(true);
rec = findpath(keyinfoa, keyinfob);
keyinfob->parent = 0;
if (keyinfoa->colour == 0) {
pathlen = count;
} else {
/*
* Skip the first key, as the remote user will already
* have it
*/
curkey = findinhash(keyinfoa->parent);
while (curkey != NULL && curkey->keyid != 0) {
if (curkey->keyid != fullwant &&
config.dbbackend->fetch_key(
curkey->keyid,
&publickey, false)) {
flatten_publickey(publickey,
&packets,
&list_end);
free_publickey(publickey);
publickey = NULL;
}
if (curkey != keyinfoa && curkey != keyinfob) {
curkey->disabled = true;
}
curkey = findinhash(curkey->parent);
}
}
pathlen++;
}
/*
* Add the destination key to the list of returned keys.
*/
if (config.dbbackend->fetch_key(fullwant, &publickey, false)) {
flatten_publickey(publickey,
&packets,
&list_end);
free_publickey(publickey);
publickey = NULL;
}
armor_openpgp_stream(stdout_putchar, NULL, packets);
free_packet_list(packets);
packets = list_end = NULL;
return 0;
}
int main(int argc, char *argv[])
{
char **cgiparams = NULL; /* Our CGI parameter block */
uint64_t from = 0, to = 0;
int op = OP_UNKNOWN;
cgiparams = getcgivars(argc, argv);
op = parsecgistuff(cgiparams, &from, &to);
if (op != OP_GET) {
start_html("Experimental PGP key path finder results");
} else {
puts("Content-Type: text/plain\n");
}
if (from == 0 || to == 0) {
printf("Must pass from & to\n");
puts("</HTML>");
exit(1);
}
if (op != OP_GET) {
printf("<P>Looking for path from 0x%" PRIX64" to 0x%" PRIX64
".\n",
from, to);
printf("<A HREF=\"gpgwww?from=0x%08" PRIX64 "&to=0x%08" PRIX64
"\">Find reverse path</A>\n",
to,
from);
printf("<A HREF=\"gpgwww?from=0x%08" PRIX64 "&to=0x%08" PRIX64
"&op=get\">"
"Get all keys listed</A></P>\n",
from,
to);
}
readconfig(NULL);
initlogthing("gpgwww", config.logfile);
catchsignals();
config.dbbackend->initdb(true);
inithash();
logthing(LOGTHING_NOTICE, "Looking for path from 0x%" PRIX64 " to 0x%"
PRIX64,
from,
to);
if (op == OP_GET) {
getkeyspath(from, to, 3);
} else {
dofindpath(from, to, true, 3);
}
destroyhash();
config.dbbackend->cleanupdb();
cleanuplogthing();
cleanupconfig();
if (op != OP_GET) {
puts("<HR>");
puts("Produced by gpgwww " PACKAGE_VERSION ", part of onak. "
"<A HREF=\"mailto:noodles-onak@earth.li\">"
"Jonathan McDowell</A>");
end_html();
}
cleanupcgi(cgiparams);
cgiparams = NULL;
return EXIT_SUCCESS;
}
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