static void upload_queue_run(const struct session *session, unsigned const char key[KDF_HASH_LEN])
{
_cleanup_free_ char *pid = NULL;
upload_queue_kill();
pid_t child = fork();
if (child < 0)
die_errno("fork(agent)");
if (child == 0) {
int null = open("/dev/null", 0);
if (null >= 0) {
dup2(null, 0);
dup2(null, 1);
dup2(null, 2);
close(null);
}
setsid();
IGNORE_RESULT(chdir("/"));
process_set_name("lpass [upload queue]");
signal(SIGHUP, upload_queue_cleanup);
signal(SIGINT, upload_queue_cleanup);
signal(SIGQUIT, upload_queue_cleanup);
signal(SIGTERM, upload_queue_cleanup);
signal(SIGALRM, upload_queue_cleanup);
upload_queue_upload_all(session, key);
upload_queue_cleanup(0);
_exit(EXIT_SUCCESS);
}
pid = xultostr(child);
config_write_string("uploader.pid", pid);
}
void agent_save(const char *username, int iterations, unsigned const char key[KDF_HASH_LEN])
{
_cleanup_free_ char *iterations_str = xultostr(iterations);
config_write_string("iterations", iterations_str);
config_write_string("username", username);
config_write_encrypted_string("verify", AGENT_VERIFICATION_STRING, key);
agent_start(key);
}
static void upload_queue_run(const struct session *session, unsigned const char key[KDF_HASH_LEN])
{
_cleanup_free_ char *pid = NULL;
upload_queue_kill();
pid_t child = fork();
if (child < 0)
die_errno("fork(agent)");
if (child == 0) {
_cleanup_free_ char *upload_log_path = NULL;
int null = open("/dev/null", 0);
int upload_log = null;
if (lpass_log_level() >= 0) {
upload_log_path = config_path("lpass.log");
upload_log = open(upload_log_path,
O_WRONLY | O_CREAT | O_APPEND, 0600);
}
if (null >= 0) {
dup2(null, 0);
dup2(upload_log, 1);
dup2(null, 2);
close(null);
close(upload_log);
}
setsid();
IGNORE_RESULT(chdir("/"));
process_set_name("lpass [upload queue]");
signal(SIGHUP, upload_queue_cleanup);
signal(SIGINT, upload_queue_cleanup);
signal(SIGQUIT, upload_queue_cleanup);
signal(SIGTERM, upload_queue_cleanup);
signal(SIGALRM, upload_queue_cleanup);
setvbuf(stdout, NULL, _IOLBF, 0);
if (http_init()) {
lpass_log(LOG_ERROR, "UQ: unable to restart curl\n");
_exit(EXIT_FAILURE);
}
lpass_log(LOG_DEBUG, "UQ: starting queue run\n");
upload_queue_upload_all(session, key);
lpass_log(LOG_DEBUG, "UQ: queue run complete\n");
upload_queue_cleanup(0);
_exit(EXIT_SUCCESS);
}
pid = xultostr(child);
config_write_string("uploader.pid", pid);
}
static void write_share_chunk(struct buffer *buffer, struct share *share)
{
struct buffer sharebuf = { .bytes = share->chunk, .len = share->chunk_len, .max = share->chunk_len };
write_chunk(buffer, &sharebuf, "SHAR");
}
size_t blob_write(const struct blob *blob, const unsigned char key[KDF_HASH_LEN], char **out)
{
struct buffer buffer;
struct share *last_share = NULL;
_cleanup_free_ char *version;
memset(&buffer, 0, sizeof(buffer));
version = xultostr(blob->version);
buffer_append(&buffer, "LPAV", 4);
write_plain_string(&buffer, version);
buffer_append(&buffer, "LOCL", 4);
write_plain_string(&buffer, LASTPASS_CLI_VERSION);
for (struct account *account = blob->account_head; account; account = account->next) {
if (!account->share)
write_account_chunk(&buffer, account, key);
}
for (struct account *account = blob->account_head; account; account = account->next) {
if (!account->share)
continue;
if (last_share != account->share) {
write_share_chunk(&buffer, account->share);
last_share = account->share;
}
write_account_chunk(&buffer, account, account->share->key);
}
*out = buffer.bytes;
return buffer.len;
}
static struct blob *local_blob(const unsigned char key[KDF_HASH_LEN], const struct private_key *private_key)
{
_cleanup_free_ char *blob = NULL;
size_t len = config_read_encrypted_buffer("blob", &blob, key);
if (!blob)
return NULL;
return blob_parse(blob, len, key, private_key);
}
static char *upload_queue_next_entry(unsigned const char key[KDF_HASH_LEN], char **name, char **lock)
{
unsigned long long smallest = ULLONG_MAX, current;
_cleanup_free_ char *smallest_name = NULL;
_cleanup_free_ char *base_path = config_path("upload-queue");
_cleanup_free_ char *pidstr = NULL;
pid_t pid;
char *result, *p;
DIR *dir = opendir(base_path);
struct dirent *entry;
if (!dir)
return NULL;
while ((entry = readdir(dir))) {
if (entry->d_type != DT_REG)
continue;
for (p = entry->d_name; *p; ++p) {
if (!isdigit(*p))
break;
}
if (*p)
continue;
current = strtoull(entry->d_name, NULL, 10);
if (!current)
continue;
if (current < smallest) {
smallest = current;
free(smallest_name);
smallest_name = xstrdup(entry->d_name);
}
}
closedir(dir);
if (smallest == ULLONG_MAX)
return NULL;
xasprintf(name, "upload-queue/%s", smallest_name);
xasprintf(lock, "%s.lock", *name);
while (config_exists(*lock)) {
free(pidstr);
pidstr = config_read_encrypted_string(*lock, key);
if (!pidstr) {
config_unlink(*lock);
break;
}
pid = strtoul(pidstr, NULL, 10);
if (!pid) {
config_unlink(*lock);
break;
}
if (process_is_same_executable(pid))
sleep(1);
else {
config_unlink(*lock);
break;
}
}
free(pidstr);
pidstr = xultostr(getpid());
config_write_encrypted_string(*lock, pidstr, key);
result = config_read_encrypted_string(*name, key);
if (!result) {
/* could not decrypt: drop this file */
upload_queue_drop(*name);
config_unlink(*lock);
return NULL;
}
return result;
}
