--- /dev/null
+/*
+ * Author: Daniel S. Haischt <me@daniel.stefan.haischt.name>
+ * Purpose: Avahi based Zeroconf support
+ * Docs: http://avahi.org/download/doxygen/
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#ifdef HAVE_AVAHI
+
+#include <unistd.h>
+#include <time.h>
+
+#include <avahi-common/strlst.h>
+
+#include <atalk/logger.h>
+#include <atalk/util.h>
+#include <atalk/dsi.h>
+#include <atalk/unicode.h>
+#include <atalk/netatalk_conf.h>
+
+#include "afp_zeroconf.h"
+#include "afp_avahi.h"
+
+/*****************************************************************
+ * Global variables
+ *****************************************************************/
+struct context *ctx = NULL;
+
+/*****************************************************************
+ * Private functions
+ *****************************************************************/
+
+static void publish_reply(AvahiEntryGroup *g,
+ AvahiEntryGroupState state,
+ void *userdata);
+
+/*
+ * This function tries to register the AFP DNS
+ * SRV service type.
+ */
+static void register_stuff(void) {
+ uint port;
+ const struct vol *volume;
+ char name[MAXINSTANCENAMELEN+1];
+ AvahiStringList *strlist = NULL;
+ AvahiStringList *strlist2 = NULL;
+ char tmpname[256];
+
+ assert(ctx->client);
+
+ if (!ctx->group) {
+ if (!(ctx->group = avahi_entry_group_new(ctx->client, publish_reply, ctx))) {
+ LOG(log_error, logtype_afpd, "Failed to create entry group: %s",
+ avahi_strerror(avahi_client_errno(ctx->client)));
+ goto fail;
+ }
+ }
+
+ if (avahi_entry_group_is_empty(ctx->group)) {
+ /* Register our service */
+
+ /* Build AFP volumes list */
+ int i = 0;
+ strlist = avahi_string_list_add_printf(strlist, "sys=waMa=0,adVF=0x100");
+
+ for (volume = getvolumes(); volume; volume = volume->v_next) {
+
+ if (convert_string(CH_UCS2, CH_UTF8_MAC, volume->v_u8mname, -1, tmpname, 255) <= 0) {
+ LOG ( log_error, logtype_afpd, "Could not set Zeroconf volume name for TimeMachine");
+ goto fail;
+ }
+
+ if (volume->v_flags & AFPVOL_TM) {
+ if (volume->v_uuid) {
+ LOG(log_info, logtype_afpd, "Registering volume '%s' with UUID: '%s' for TimeMachine",
+ volume->v_localname, volume->v_uuid);
+ strlist = avahi_string_list_add_printf(strlist, "dk%u=adVN=%s,adVF=0xa1,adVU=%s",
+ i++, tmpname, volume->v_uuid);
+ } else {
+ LOG(log_warning, logtype_afpd, "Registering volume '%s' for TimeMachine. But UUID is invalid.",
+ volume->v_localname);
+ strlist = avahi_string_list_add_printf(strlist, "dk%u=adVN=%s,adVF=0xa1",
+ i++, tmpname);
+ }
+ }
+ }
+
+ port = atoi(ctx->obj->options.port);
+
+ LOG(log_info, logtype_afpd, "hostname: %s", ctx->obj->options.hostname);
+
+ if (convert_string(ctx->obj->options.unixcharset,
+ CH_UTF8,
+ ctx->obj->options.hostname,
+ -1,
+ name,
+ MAXINSTANCENAMELEN) <= 0) {
+ LOG(log_error, logtype_afpd, "Could not set Zeroconf instance name: %s", ctx->obj->options.hostname);
+ goto fail;
+ }
+
+ LOG(log_info, logtype_afpd, "Registering server '%s' with Bonjour", name);
+
+ if (avahi_entry_group_add_service(ctx->group,
+ AVAHI_IF_UNSPEC,
+ AVAHI_PROTO_UNSPEC,
+ 0,
+ name,
+ AFP_DNS_SERVICE_TYPE,
+ NULL,
+ NULL,
+ port,
+ NULL) < 0) {
+ LOG(log_error, logtype_afpd, "Failed to add service: %s",
+ avahi_strerror(avahi_client_errno(ctx->client)));
+ goto fail;
+ }
+
+ if (i && avahi_entry_group_add_service_strlst(ctx->group,
+ AVAHI_IF_UNSPEC,
+ AVAHI_PROTO_UNSPEC,
+ 0,
+ name,
+ ADISK_SERVICE_TYPE,
+ NULL,
+ NULL,
+ 9, /* discard */
+ strlist) < 0) {
+ LOG(log_error, logtype_afpd, "Failed to add service: %s",
+ avahi_strerror(avahi_client_errno(ctx->client)));
+ goto fail;
+ } /* if */
+
+ if (ctx->obj->options.mimicmodel) {
+ strlist2 = avahi_string_list_add_printf(strlist2, "model=%s", ctx->obj->options.mimicmodel);
+ if (avahi_entry_group_add_service_strlst(ctx->group,
+ AVAHI_IF_UNSPEC,
+ AVAHI_PROTO_UNSPEC,
+ 0,
+ name,
+ DEV_INFO_SERVICE_TYPE,
+ NULL,
+ NULL,
+ 0,
+ strlist2) < 0) {
+ LOG(log_error, logtype_afpd, "Failed to add service: %s",
+ avahi_strerror(avahi_client_errno(ctx->client)));
+ goto fail;
+ }
+ } /* if (config->obj.options.mimicmodel) */
+
+ if (avahi_entry_group_commit(ctx->group) < 0) {
+ LOG(log_error, logtype_afpd, "Failed to commit entry group: %s",
+ avahi_strerror(avahi_client_errno(ctx->client)));
+ goto fail;
+ }
+
+ } /* if avahi_entry_group_is_empty*/
+
+ return;
+
+fail:
+ time(NULL);
+// avahi_threaded_poll_quit(ctx->threaded_poll);
+}
+
+/* Called when publishing of service data completes */
+static void publish_reply(AvahiEntryGroup *g,
+ AvahiEntryGroupState state,
+ AVAHI_GCC_UNUSED void *userdata)
+{
+ assert(ctx->group == NULL || g == ctx->group);
+
+ switch (state) {
+
+ case AVAHI_ENTRY_GROUP_ESTABLISHED :
+ /* The entry group has been established successfully */
+ LOG(log_debug, logtype_afpd, "publish_reply: AVAHI_ENTRY_GROUP_ESTABLISHED");
+ break;
+
+ case AVAHI_ENTRY_GROUP_COLLISION:
+ /* With multiple names there's no way to know which one collided */
+ LOG(log_error, logtype_afpd, "publish_reply: AVAHI_ENTRY_GROUP_COLLISION",
+ avahi_strerror(avahi_client_errno(ctx->client)));
+ avahi_threaded_poll_quit(ctx->threaded_poll);
+ break;
+
+ case AVAHI_ENTRY_GROUP_FAILURE:
+ LOG(log_error, logtype_afpd, "Failed to register service: %s",
+ avahi_strerror(avahi_client_errno(ctx->client)));
+ avahi_threaded_poll_quit(ctx->threaded_poll);
+ break;
+
+ case AVAHI_ENTRY_GROUP_UNCOMMITED:
+ break;
+ case AVAHI_ENTRY_GROUP_REGISTERING:
+ break;
+ }
+}
+
+static void client_callback(AvahiClient *client,
+ AvahiClientState state,
+ void *userdata)
+{
+ ctx->client = client;
+
+ switch (state) {
+ case AVAHI_CLIENT_S_RUNNING:
+ /* The server has startup successfully and registered its host
+ * name on the network, so it's time to create our services */
+ if (!ctx->group)
+ register_stuff();
+ break;
+
+ case AVAHI_CLIENT_S_COLLISION:
+ if (ctx->group)
+ avahi_entry_group_reset(ctx->group);
+ break;
+
+ case AVAHI_CLIENT_FAILURE: {
+ if (avahi_client_errno(client) == AVAHI_ERR_DISCONNECTED) {
+ int error;
+
+ avahi_client_free(ctx->client);
+ ctx->client = NULL;
+ ctx->group = NULL;
+
+ /* Reconnect to the server */
+ if (!(ctx->client = avahi_client_new(avahi_threaded_poll_get(ctx->threaded_poll),
+ AVAHI_CLIENT_NO_FAIL,
+ client_callback,
+ ctx,
+ &error))) {
+
+ LOG(log_error, logtype_afpd, "Failed to contact server: %s",
+ avahi_strerror(error));
+
+ avahi_threaded_poll_quit(ctx->threaded_poll);
+ }
+
+ } else {
+ LOG(log_error, logtype_afpd, "Client failure: %s",
+ avahi_strerror(avahi_client_errno(client)));
+ avahi_threaded_poll_quit(ctx->threaded_poll);
+ }
+ break;
+ }
+
+ case AVAHI_CLIENT_S_REGISTERING:
+ break;
+ case AVAHI_CLIENT_CONNECTING:
+ break;
+ }
+}
+
+/************************************************************************
+ * Public funcions
+ ************************************************************************/
+
+/*
+ * Tries to setup the Zeroconf thread and any
+ * neccessary config setting.
+ */
+void av_zeroconf_register(const AFPObj *obj) {
+ int error;
+
+ /* initialize the struct that holds our config settings. */
+ if (ctx) {
+ LOG(log_debug, logtype_afpd, "Resetting zeroconf records");
+ avahi_entry_group_reset(ctx->group);
+ } else {
+ ctx = calloc(1, sizeof(struct context));
+ ctx->obj = obj;
+ assert(ctx);
+ }
+
+/* first of all we need to initialize our threading env */
+ if (!(ctx->threaded_poll = avahi_threaded_poll_new())) {
+ goto fail;
+ }
+
+/* now we need to acquire a client */
+ if (!(ctx->client = avahi_client_new(avahi_threaded_poll_get(ctx->threaded_poll),
+ AVAHI_CLIENT_NO_FAIL,
+ client_callback,
+ NULL,
+ &error))) {
+ LOG(log_error, logtype_afpd, "Failed to create client object: %s",
+ avahi_strerror(error));
+ goto fail;
+ }
+
+ if (avahi_threaded_poll_start(ctx->threaded_poll) < 0) {
+ LOG(log_error, logtype_afpd, "Failed to create thread: %s",
+ avahi_strerror(avahi_client_errno(ctx->client)));
+ goto fail;
+ } else {
+ LOG(log_info, logtype_afpd, "Successfully started avahi loop.");
+ }
+
+ ctx->thread_running = 1;
+ return;
+
+fail:
+ av_zeroconf_unregister();
+
+ return;
+}
+
+/*
+ * Tries to shutdown this loop impl.
+ * Call this function from inside this thread.
+ */
+int av_zeroconf_unregister() {
+ LOG(log_error, logtype_afpd, "av_zeroconf_unregister");
+
+ if (ctx) {
+ LOG(log_error, logtype_afpd, "av_zeroconf_unregister: avahi_threaded_poll_stop");
+ if (ctx->threaded_poll)
+ avahi_threaded_poll_stop(ctx->threaded_poll);
+ LOG(log_error, logtype_afpd, "av_zeroconf_unregister: avahi_client_free");
+ if (ctx->client)
+ avahi_client_free(ctx->client);
+ LOG(log_error, logtype_afpd, "av_zeroconf_unregister: avahi_threaded_poll_free");
+ if (ctx->threaded_poll)
+ avahi_threaded_poll_free(ctx->threaded_poll);
+ free(ctx);
+ ctx = NULL;
+ }
+ return 0;
+}
+
+#endif /* USE_AVAHI */
+
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