int main(int argc, char *argv[])
{
Hashmap *packages;
if (!(packages = readPackages(PACKAGES)))
return -1;
//hashmapForEach(packages, dumpPackage, NULL);
printf("Found packages: %u\n", (int) hashmapSize(packages));
initUsers();
if (argc == 2)
{
APK *package = (APK *) hashmapGet(packages, argv[1]);
if (package)
checkPackage(NULL, package, NULL);
else
printf("Package %s not found\n", argv[1]);
}
else
hashmapForEach(packages, checkPackage, NULL);
hashmapForEach(packages, freePackage, NULL);
hashmapFree(packages);
return 0;
}
/**
* Called when the peer dies.
*/
static void peerProxyKill(PeerProxy* peerProxy, bool errnoIsSet) {
if (errnoIsSet) {
ALOGI("Peer %d died. errno: %s", peerProxy->credentials.pid,
strerror(errno));
} else {
ALOGI("Peer %d died.", peerProxy->credentials.pid);
}
// If we lost the master, we're up a creek. We can't let this happen.
if (peerProxy->master) {
LOG_ALWAYS_FATAL("Lost connection to master.");
}
Peer* localPeer = peerProxy->peer;
pid_t pid = peerProxy->credentials.pid;
peerLock(localPeer);
// Remember for awhile that the peer died.
localPeer->deadPeers[localPeer->deadPeerCursor]
= peerProxy->credentials.pid;
localPeer->deadPeerCursor++;
if (localPeer->deadPeerCursor == PEER_HISTORY) {
localPeer->deadPeerCursor = 0;
}
// Remove from peer map.
hashmapRemove(localPeer->peerProxies, &pid);
// External threads can no longer get to this peer proxy, so we don't
// need the lock anymore.
peerUnlock(localPeer);
// Remove the fd from the selector.
if (peerProxy->fd != NULL) {
peerProxy->fd->remove = true;
}
// Clear outgoing packet queue.
while (peerProxyNextPacket(peerProxy)) {}
bufferFree(peerProxy->inputBuffer);
// This only applies to the master.
if (peerProxy->connections != NULL) {
// We can't leave these other maps pointing to freed memory.
hashmapForEach(peerProxy->connections, &peerProxyRemoveConnection,
peerProxy);
hashmapFree(peerProxy->connections);
}
// Invoke death listener.
localPeer->onDeath(pid);
// Free the peer proxy itself.
free(peerProxy);
}
void ttref_print_activity_index(CharBuffer *b, Hashmap *m) {
struct ctx ctx;
ctx.b = b;
ctx.sep = false;
hashmapForEach(m, append, &ctx);
}
void imagerenderer_freeImages(struct image_renderers *ir) {
hashmapForEach(ir->images, callback, (void *) ir);
}
void massdns_scan(lookup_context_t *context)
{
memset(&stats, 0, sizeof(dns_stats_t));
size_t line_buflen = 4096;
char *line = safe_malloc(line_buflen);
size_t line_len = 0;
struct sockaddr_in server_addr;
server_addr.sin_family = AF_INET;
server_addr.sin_addr.s_addr = INADDR_ANY;
server_addr.sin_port = 0;
int sock = socket(AF_INET, SOCK_DGRAM, 0);
int socketbuf = 1024 * 1024 * 100;
if (setsockopt(sock, SOL_SOCKET, SO_SNDBUF, &socketbuf, sizeof(socketbuf)) != 0)
{
perror("Failed to adjust socket send buffer size.");
}
if (setsockopt(sock, SOL_SOCKET, SO_RCVBUF, &socketbuf, sizeof(socketbuf)) != 0)
{
perror("Failed to adjust socket receive buffer size.");
}
bind(sock, (sockaddr_t *) &server_addr, sizeof(server_addr));
fcntl(sock, F_SETFL, fcntl(sock, F_GETFL, 0) | O_NONBLOCK);
if (sock < 0)
{
perror("Failed to create socket");
exit(1);
}
FILE *f;
if(context->cmd_args.show_progress)
{
f = fopen(context->cmd_args.domains, "r");
if (f == NULL)
{
perror("Failed to open domain file");
exit(1);
}
while(!feof(f))
{
if (0 <= getline(&line, &line_buflen, f))
{
trim_end(line);
strtolower(line);
if (strcmp(line, "") != 0)
{
context->total_domains++;
}
}
}
fclose(f);
}
f = fopen(context->cmd_args.domains, "r");
if (f == NULL)
{
perror("Failed to open domain file");
exit(1);
}
if (geteuid() == 0)
{
fprintf(stderr, "You have started the program with root privileges.\n");
struct passwd *nobody = getpwnam(UNPRIVILEGED_USER);
if (!context->cmd_args.root)
{
if (nobody && setuid(nobody->pw_uid) == 0)
{
fprintf(stderr, "Privileges have been dropped to \"%s\" for security reasons.\n\n", UNPRIVILEGED_USER);
}
else if (!context->cmd_args.root)
{
fprintf(stderr, "Privileges could not be dropped to \"%s\".\n"
"For security reasons, this program will only run as root user when supplied with --root"
"which is not recommended.\n"
"It is better practice to run this program as a different user.\n", UNPRIVILEGED_USER);
exit(1);
}
}
else
{
fprintf(stderr, "[WARNING] Privileges were not dropped. This is not recommended.\n\n");
}
}
FILE *randomness = fopen("/dev/urandom", "r");
if (!randomness)
{
fprintf(stderr, "Failed to open /dev/urandom.\n");
exit(1);
}
context->current_rate = 0;
context->sock = sock;
context->resolvers = massdns_resolvers_from_file(context->cmd_args.resolvers);
context->map = hashmapCreate(context->cmd_args.hashmap_size, hash_string, cmp_lookup);
context->initial = true;
gettimeofday(&context->start_time, NULL);
context->next_update = context->start_time;
while (true)
{
while (hashmapSize(context->map) < context->cmd_args.hashmap_size && !feof(f))
{
if (0 <= getline(&line, &line_buflen, f))
{
trim_end(line);
line_len = strlen(line);
strtolower(line);
if(strcmp(line, "") == 0)
{
continue;
}
if (line_len > 0 && line[line_len - 1] == '.')
{
// Remove trailing dot from FQDN
line[line_len] = 0;
}
lookup_t *lookup = hashmapGet(context->map, line);
if (lookup == NULL)
{
char *value = safe_malloc(line_len + 1);
strcpy(value, line);
lookup = safe_malloc(sizeof(*lookup));
lookup->domain = value;
lookup->tries = 0;
if (fread(&lookup->transaction, 1, sizeof(lookup->transaction), randomness) !=
sizeof(lookup->transaction))
{
fprintf(stderr, "Failed to get randomness for transaction id.\n");
exit(1);
}
gettimeofday(&lookup->next_lookup, NULL);
hashmapPut(context->map, value, lookup);
}
}
}
if(!context->cooldown && hashmapSize(context->map) < context->cmd_args.hashmap_size)
{
context->cooldown = true;
gettimeofday(&context->cooldown_time, NULL);
}
while (massdns_receive_packet(sock, massdns_handle_packet, context));
if (feof(f) && hashmapSize(context->map) == 0)
{
break;
}
hashmapForEach(context->map, handle_domain, context);
}
for (size_t i = 0; i < context->resolvers.len; i++)
{
free(((sockaddr_in_t **) context->resolvers.data)[i]);
((sockaddr_in_t **) context->resolvers.data)[i] = NULL;
}
free(line);
free(context->resolvers.data);
context->resolvers.data = NULL;
print_stats(context);
hashmapFree(context->map);
context->map = NULL;
fclose(f);
fclose(randomness);
}