int
zcert_save (zcert_t *self, char *format, ...)
{
assert (self);
assert (format);
va_list argptr;
va_start (argptr, format);
char *filename = zsys_vprintf (format, argptr);
va_end (argptr);
// Save public certificate using specified filename
zcert_save_public (self, filename);
// Now save secret certificate using filename with "_secret" suffix
s_save_metadata_all (self);
zconfig_comment (self->config, " ZeroMQ CURVE **Secret** Certificate");
zconfig_comment (self->config, " DO NOT PROVIDE THIS FILE TO OTHER USERS nor change its permissions.");
zconfig_put (self->config, "/curve/public-key", self->public_txt);
zconfig_put (self->config, "/curve/secret-key", self->secret_txt);
char filename_secret [256];
snprintf (filename_secret, 256, "%s_secret", filename);
zsys_file_mode_private ();
int rc = zconfig_save (self->config, filename_secret);
zsys_file_mode_default ();
zstr_free (&filename);
return rc;
}
void
zconfig_put (zconfig_t *self, char *path, char *value)
{
if (*path == '/')
path++;
// Check length of next path segment
char *slash = strchr (path, '/');
int length = strlen (path);
if (slash)
length = slash - path;
// Find or create items starting at first child of root
zconfig_t *child = self->child;
while (child) {
if (strlen (child->name) == length
&& memcmp (child->name, path, length) == 0) {
// This segment exists
if (slash) // Recurse to next level
zconfig_put (child, slash + 1, value);
else
zconfig_set_value (child, "%s", value);
return;
}
child = child->next;
}
// This segment doesn't exist, create it
child = zconfig_new (path, self);
child->name [length] = 0;
if (slash) // Recurse down further
zconfig_put (child, slash, value);
else
zconfig_set_value (child, "%s", value);
}
// Process message from pipe
static void
server_control_message (server_t *self)
{
zmsg_t *msg = zmsg_recv (self->pipe);
char *method = zmsg_popstr (msg);
if (streq (method, "BIND")) {
char *endpoint = zmsg_popstr (msg);
self->port = zsocket_bind (self->router, endpoint);
zstr_sendf (self->pipe, "%d", self->port);
free (endpoint);
}
else
if (streq (method, "PUBLISH")) {
char *location = zmsg_popstr (msg);
char *alias = zmsg_popstr (msg);
mount_t *mount = mount_new (location, alias);
zlist_append (self->mounts, mount);
free (location);
free (alias);
}
else
if (streq (method, "SET ANONYMOUS")) {
char *enabled_string = zmsg_popstr (msg);
long enabled = atoi (enabled_string);
free (enabled_string);
// Enable anonymous access without a config file
zconfig_put (self->config, "security/anonymous", enabled? "1" :"0");
}
else
if (streq (method, "CONFIG")) {
char *config_file = zmsg_popstr (msg);
zconfig_destroy (&self->config);
self->config = zconfig_load (config_file);
if (self->config)
server_apply_config (self);
else {
printf ("E: cannot load config file '%s'\n", config_file);
self->config = zconfig_new ("root", NULL);
}
free (config_file);
}
else
if (streq (method, "SETOPTION")) {
char *path = zmsg_popstr (msg);
char *value = zmsg_popstr (msg);
zconfig_put (self->config, path, value);
server_config_self (self);
free (path);
free (value);
}
else
if (streq (method, "STOP")) {
zstr_send (self->pipe, "OK");
self->stopped = true;
}
free (method);
zmsg_destroy (&msg);
}
// Apply configuration tree:
// * apply server configuration
// * print any echo items in top-level sections
// * apply sections that match methods
static void
server_apply_config (server_t *self)
{
// Apply echo commands and class methods
zconfig_t *section = zconfig_child (self->config);
while (section) {
zconfig_t *entry = zconfig_child (section);
while (entry) {
if (streq (zconfig_name (entry), "echo"))
zclock_log (zconfig_value (entry));
entry = zconfig_next (entry);
}
if (streq (zconfig_name (section), "bind")) {
char *endpoint = zconfig_resolve (section, "endpoint", "?");
self->port = zsocket_bind (self->router, endpoint);
}
else
if (streq (zconfig_name (section), "publish")) {
char *location = zconfig_resolve (section, "location", "?");
char *alias = zconfig_resolve (section, "alias", "?");
mount_t *mount = mount_new (location, alias);
zlist_append (self->mounts, mount);
}
else
if (streq (zconfig_name (section), "set_anonymous")) {
long enabled = atoi (zconfig_resolve (section, "enabled", ""));
// Enable anonymous access without a config file
zconfig_put (self->config, "security/anonymous", enabled? "1" :"0");
}
section = zconfig_next (section);
}
server_config_self (self);
}
int
hydra_post_save (hydra_post_t *self, const char *filename)
{
assert (self);
assert (filename);
// Creeate subdirectories if necessary
zsys_dir_create ("posts");
zsys_dir_create ("posts/blobs");
// If post content hasn't yet been serialised, write it to disk in the
// blobs directory and set the location property to point to it.
if (self->content) {
assert (!self->location);
self->location = zsys_sprintf ("posts/blobs/%s", self->digest);
FILE *output = fopen (self->location, "wb");
zchunk_write (self->content, output);
zchunk_destroy (&self->content);
fclose (output);
}
zconfig_t *root = zconfig_new ("root", NULL);
zconfig_put (root, "/post/ident", hydra_post_ident (self));
zconfig_put (root, "/post/subject", self->subject);
zconfig_put (root, "/post/timestamp", self->timestamp);
zconfig_put (root, "/post/parent-id", self->parent_id);
zconfig_put (root, "/post/mime-type", self->mime_type);
zconfig_put (root, "/post/digest", self->digest);
zconfig_put (root, "/post/location", self->location);
zconfig_putf (root, "/post/content-size", "%ld", self->content_size);
zconfig_savef (root, "posts/%s", filename);
zconfig_destroy (&root);
return 0;
}
JNIEXPORT void JNICALL
Java_zconfig__1_1put (JNIEnv *env, jclass c, jlong self, jstring path, jstring value)
{
char *path_ = (char *) (*env)->GetStringUTFChars (env, path, NULL);
char *value_ = (char *) (*env)->GetStringUTFChars (env, value, NULL);
zconfig_put ((zconfig_t *) self, path_, value_);
(*env)->ReleaseStringUTFChars (env, path, path_);
(*env)->ReleaseStringUTFChars (env, value, value_);
}
int
zcert_save_secret (zcert_t *self, const char *filename)
{
assert (self);
assert (filename);
s_save_metadata_all (self);
zconfig_set_comment (self->config,
" ZeroMQ CURVE **Secret** Certificate");
zconfig_set_comment (self->config,
" DO NOT PROVIDE THIS FILE TO OTHER USERS nor change its permissions.");
zconfig_put (self->config, "/curve/public-key", self->public_txt);
zconfig_put (self->config, "/curve/secret-key", self->secret_txt);
zsys_file_mode_private ();
int rc = zconfig_save (self->config, filename);
zsys_file_mode_default ();
return rc;
}
void
zconfig_putf (zconfig_t *self, const char *path, const char *format, ...)
{
assert (self);
va_list argptr;
va_start (argptr, format);
char *value = zsys_vprintf (format, argptr);
va_end (argptr);
zconfig_put (self, path, value);
zstr_free (&value);
}
void
zconfig_test (bool verbose)
{
printf (" * zconfig: ");
// @selftest
// Create temporary directory for test files
# define TESTDIR ".test_zconfig"
zsys_dir_create (TESTDIR);
zconfig_t *root = zconfig_new ("root", NULL);
zconfig_t *section, *item;
section = zconfig_new ("headers", root);
item = zconfig_new ("email", section);
zconfig_set_value (item, "*****@*****.**");
item = zconfig_new ("name", section);
zconfig_set_value (item, "Justin Kayce");
zconfig_put (root, "/curve/secret-key", "Top Secret");
zconfig_set_comment (root, " CURVE certificate");
zconfig_set_comment (root, " -----------------");
assert (zconfig_comments (root));
zconfig_save (root, TESTDIR "/test.cfg");
zconfig_destroy (&root);
root = zconfig_load (TESTDIR "/test.cfg");
if (verbose)
zconfig_save (root, "-");
char *email = zconfig_resolve (root, "/headers/email", NULL);
assert (email);
assert (streq (email, "*****@*****.**"));
char *passwd = zconfig_resolve (root, "/curve/secret-key", NULL);
assert (passwd);
assert (streq (passwd, "Top Secret"));
zconfig_save (root, TESTDIR "/test.cfg");
zconfig_destroy (&root);
// Delete all test files
zdir_t *dir = zdir_new (TESTDIR, NULL);
zdir_remove (dir, true);
zdir_destroy (&dir);
// @end
printf ("OK\n");
}
int
zcert_save_public (zcert_t *self, const char *filename)
{
assert (self);
assert (filename);
s_save_metadata_all (self);
zconfig_set_comment (self->config,
" ZeroMQ CURVE Public Certificate");
zconfig_set_comment (self->config,
" Exchange securely, or use a secure mechanism to verify the contents");
zconfig_set_comment (self->config,
" of this file after exchange. Store public certificates in your home");
zconfig_set_comment (self->config,
" directory, in the .curve subdirectory.");
zconfig_put (self->config, "/curve/public-key", self->public_txt);
int rc = zconfig_save (self->config, filename);
return rc;
}
int
zcert_save_public (zcert_t *self, char *format, ...)
{
assert (self);
assert (format);
va_list argptr;
va_start (argptr, format);
char *filename = zsys_vprintf (format, argptr);
va_end (argptr);
s_save_metadata_all (self);
zconfig_comment (self->config, " ZeroMQ CURVE Public Certificate");
zconfig_comment (self->config, " Exchange securely, or use a secure mechanism to verify the contents");
zconfig_comment (self->config, " of this file after exchange. Store public certificates in your home");
zconfig_comment (self->config, " directory, in the .curve subdirectory.");
zconfig_put (self->config, "/curve/public-key", self->public_txt);
int rc = zconfig_save (self->config, filename);
zstr_free (&filename);
return rc;
}
///
// Insert or update configuration key with value
void QmlZconfig::put (const QString &path, const QString &value) {
zconfig_put (self, path.toUtf8().data(), value.toUtf8().data());
};
int main (int argc, char *argv [])
{
puts (PRODUCT);
puts (COPYRIGHT);
puts (NOWARRANTY);
int argn = 1;
bool verbose = false;
if (argn < argc && streq (argv [argn], "-h")) {
puts ("syntax: hydrad [ directory ]");
puts (" -- defaults to .hydra in current directory");
exit (0);
}
if (argn < argc && streq (argv [argn], "-v")) {
verbose = true;
argn++;
}
// By default, current node runs in .hydra directory; create this if
// it's missing (don't create directory passed as argument);
char *workdir = ".hydra";
if (argn < argc)
workdir = argv [argn++];
else
zsys_dir_create (workdir);
// ----------------------------------------------------------------------
// This code eventually goes into a reusable hydra actor class
// Switch to working directory
zsys_info ("hydrad: data store in %s directory", workdir);
if (zsys_dir_change (workdir)) {
zsys_error ("hydrad: cannot access %s: %s", workdir, strerror (errno));
return 1;
}
// Check we are the only process currently running here
if (zsys_run_as ("hydrad.lock", NULL, NULL)) {
zsys_error ("hydrad: cannot start process safely, exiting");
return 1;
}
// Get node identity from config file, or generate new identity
zconfig_t *config = zconfig_load ("hydra.cfg");
if (!config) {
// Set defaults for Hydra service
config = zconfig_new ("root", NULL);
zconfig_put (config, "/server/timeout", "5000");
zconfig_put (config, "/server/background", "0");
zconfig_put (config, "/server/verbose", "0");
}
char *identity = zconfig_resolve (config, "/hydra/identity", NULL);
if (!identity) {
zuuid_t *uuid = zuuid_new ();
zconfig_put (config, "/hydra/identity", zuuid_str (uuid));
zconfig_put (config, "/hydra/nickname", "Anonymous");
zconfig_save (config, "hydra.cfg");
zuuid_destroy (&uuid);
}
// Create store structure, if necessary
zsys_dir_create ("content");
zsys_dir_create ("posts");
// Start server and bind to ephemeral TCP port. We can run many
// servers on the same box, for testing.
zactor_t *server = zactor_new (hydra_server, NULL);
if (verbose)
zstr_send (server, "VERBOSE");
// Bind Hydra service to ephemeral port and get that port number
char *command;
int port_nbr;
zsock_send (server, "ss", "CONFIGURE", "hydra.cfg");
zsock_send (server, "ss", "BIND", "tcp://*:*");
zsock_send (server, "s", "PORT");
zsock_recv (server, "si", &command, &port_nbr);
zsys_info ("hydrad: TCP server started on port=%d", port_nbr);
assert (streq (command, "PORT"));
free (command);
// We're going to use Zyre for discovery and presence, and our own
// Hydra protocol for content exchange
zyre_t *zyre = zyre_new (NULL);
if (verbose)
zyre_set_verbose (zyre);
char *hostname = zsys_hostname ();
char *endpoint = zsys_sprintf ("tcp://%s:%d", hostname, port_nbr);
zyre_set_header (zyre, "X-HYDRA", "%s", endpoint);
zstr_free (&endpoint);
zstr_free (&hostname);
if (zyre_start (zyre)) {
zsys_info ("hydrad: can't start Zyre discovery service");
zactor_destroy (&server);
zyre_destroy (&zyre);
return 1;
}
// When we get a new peer, handle it
zpoller_t *poller = zpoller_new (zyre_socket (zyre), NULL);
while (!zpoller_terminated (poller)) {
void *which = zpoller_wait (poller, -1);
if (which == zyre_socket (zyre)) {
zyre_event_t *event = zyre_event_new (zyre);
if (zyre_event_type (event) == ZYRE_EVENT_ENTER) {
zsys_debug ("hydrad: new peer name=%s endpoint=%s",
zyre_event_name (event),
zyre_event_header (event, "X-HYDRA"));
s_handle_peer (zyre_event_header (event, "X-HYDRA"), verbose);
}
zyre_event_destroy (&event);
}
else
break;
}
zsys_info ("hydrad: shutting down...");
zpoller_destroy (&poller);
// Shutdown all services
zactor_destroy (&server);
zyre_destroy (&zyre);
zconfig_destroy (&config);
return 0;
}
int main (int argc, char *argv [])
{
puts (PRODUCT);
puts (COPYRIGHT);
puts (NOWARRANTY);
int argn = 1;
bool verbose = false;
bool force_foreground = false;
if (argc > argn && streq (argv [argn], "-v")) {
verbose = true;
argn++;
}
if (argc > argn && streq (argv [argn], "-f")) {
force_foreground = true;
argn++;
}
if (argc > argn && streq (argv [argn], "-h")) {
puts ("Usage: malamute [ -v ] [ -f ] [ -h | config-file ]");
puts (" Default config-file is 'malamute.cfg'");
return 0;
}
// Collect configuration file name
const char *config_file = "malamute.cfg";
if (argc > argn) {
config_file = argv [argn];
argn++;
}
zsys_init ();
// Keep old behavior unless specified otherwise.
if (!getenv ("ZSYS_LOGSYSTEM")) {
zsys_set_logsystem(true);
}
zsys_set_pipehwm (0);
zsys_set_sndhwm (0);
zsys_set_rcvhwm (0);
// Load config file for our own use here
zsys_info ("loading configuration from '%s'...", config_file);
zconfig_t *config = zconfig_load (config_file);
if (!config) {
zsys_info ("'%s' is missing, creating with defaults:", config_file);
config = zconfig_new ("root", NULL);
zconfig_put (config, "server/timeout", "5000");
zconfig_put (config, "server/background", "0");
zconfig_put (config, "server/workdir", ".");
zconfig_put (config, "server/verbose", "0");
zconfig_put (config, "mlm_server/security/mechanism", "null");
zconfig_put (config, "mlm_server/bind/endpoint", MLM_DEFAULT_ENDPOINT);
zconfig_print (config);
zconfig_save (config, config_file);
}
// Do we want to run broker in the background?
int as_daemon = !force_foreground && atoi (zconfig_resolve (config, "server/background", "0"));
const char *workdir = zconfig_resolve (config, "server/workdir", ".");
if (as_daemon) {
zsys_info ("switching Malamute to background...");
if (zsys_daemonize (workdir))
return -1;
}
// Switch to user/group to run process under, if any
if (zsys_run_as (
zconfig_resolve (config, "server/lockfile", NULL),
zconfig_resolve (config, "server/group", NULL),
zconfig_resolve (config, "server/user", NULL)))
return -1;
// Install authenticator (NULL or PLAIN)
zactor_t *auth = zactor_new (zauth, NULL);
assert (auth);
if (verbose || atoi (zconfig_resolve (config, "server/auth/verbose", "0"))) {
zstr_sendx (auth, "VERBOSE", NULL);
zsock_wait (auth);
}
// Do PLAIN password authentication if requested
const char *passwords = zconfig_resolve (config, "server/auth/plain", NULL);
if (passwords) {
zstr_sendx (auth, "PLAIN", passwords, NULL);
zsock_wait (auth);
}
// Start Malamute server instance
zactor_t *server = zactor_new (mlm_server, "Malamute");
if (verbose)
zstr_send (server, "VERBOSE");
zstr_sendx (server, "LOAD", config_file, NULL);
// Accept and print any message back from server
while (true) {
char *message = zstr_recv (server);
if (message) {
puts (message);
free (message);
}
else {
puts ("interrupted");
break;
}
}
// Shutdown all services
zactor_destroy (&server);
zactor_destroy (&auth);
// Destroy config tree
zconfig_destroy (&config);
#if defined (__WINDOWS__)
zsys_shutdown ();
#endif
return 0;
}
