Merge branch 'release/0.0.1'

[catta] / src / browse-service.c

diff --git a/src/browse-service.c b/src/browse-service.c
new file mode 100644 (file)
index 0000000..3b09695
--- /dev/null
+++ b/src/browse-service.c
@@ -0,0 +1,167 @@
+/***
+  This file is part of catta.
+
+  catta is free software; you can redistribute it and/or modify it
+  under the terms of the GNU Lesser General Public License as
+  published by the Free Software Foundation; either version 2.1 of the
+  License, or (at your option) any later version.
+
+  catta is distributed in the hope that it will be useful, but WITHOUT
+  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+  or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
+  Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public
+  License along with catta; if not, write to the Free Software
+  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+  USA.
+***/
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <string.h>
+
+#include <catta/domain.h>
+#include <catta/malloc.h>
+#include <catta/error.h>
+
+#include "browse.h"
+#include <catta/log.h>
+
+struct CattaSServiceBrowser {
+    CattaServer *server;
+    char *domain_name;
+    char *service_type;
+
+    CattaSRecordBrowser *record_browser;
+
+    CattaSServiceBrowserCallback callback;
+    void* userdata;
+
+    CATTA_LLIST_FIELDS(CattaSServiceBrowser, browser);
+};
+
+static void record_browser_callback(
+    CattaSRecordBrowser*rr,
+    CattaIfIndex iface,
+    CattaProtocol protocol,
+    CattaBrowserEvent event,
+    CattaRecord *record,
+    CattaLookupResultFlags flags,
+    void* userdata) {
+
+    CattaSServiceBrowser *b = userdata;
+
+    assert(rr);
+    assert(b);
+
+    /* Filter flags */
+    flags &= CATTA_LOOKUP_RESULT_CACHED | CATTA_LOOKUP_RESULT_MULTICAST | CATTA_LOOKUP_RESULT_WIDE_AREA;
+
+    if (record) {
+        char service[CATTA_LABEL_MAX], type[CATTA_DOMAIN_NAME_MAX], domain[CATTA_DOMAIN_NAME_MAX];
+
+        assert(record->key->type == CATTA_DNS_TYPE_PTR);
+
+        if (event == CATTA_BROWSER_NEW && catta_server_is_service_local(b->server, iface, protocol, record->data.ptr.name))
+            flags |= CATTA_LOOKUP_RESULT_LOCAL;
+
+        if (catta_service_name_split(record->data.ptr.name, service, sizeof(service), type, sizeof(type), domain, sizeof(domain)) < 0) {
+            catta_log_warn("Failed to split '%s'", record->key->name);
+            return;
+        }
+
+        b->callback(b, iface, protocol, event, service, type, domain, flags, b->userdata);
+
+    } else
+        b->callback(b, iface, protocol, event, NULL, b->service_type, b->domain_name, flags, b->userdata);
+
+}
+
+CattaSServiceBrowser *catta_s_service_browser_new(
+    CattaServer *server,
+    CattaIfIndex iface,
+    CattaProtocol protocol,
+    const char *service_type,
+    const char *domain,
+    CattaLookupFlags flags,
+    CattaSServiceBrowserCallback callback,
+    void* userdata) {
+
+    CattaSServiceBrowser *b;
+    CattaKey *k = NULL;
+    char n[CATTA_DOMAIN_NAME_MAX];
+    int r;
+
+    assert(server);
+    assert(callback);
+    assert(service_type);
+
+    CATTA_CHECK_VALIDITY_RETURN_NULL(server, CATTA_IF_VALID(iface), CATTA_ERR_INVALID_INTERFACE);
+    CATTA_CHECK_VALIDITY_RETURN_NULL(server, CATTA_PROTO_VALID(protocol), CATTA_ERR_INVALID_PROTOCOL);
+    CATTA_CHECK_VALIDITY_RETURN_NULL(server, !domain || catta_is_valid_domain_name(domain), CATTA_ERR_INVALID_DOMAIN_NAME);
+    CATTA_CHECK_VALIDITY_RETURN_NULL(server, CATTA_FLAGS_VALID(flags, CATTA_LOOKUP_USE_WIDE_AREA|CATTA_LOOKUP_USE_MULTICAST), CATTA_ERR_INVALID_FLAGS);
+    CATTA_CHECK_VALIDITY_RETURN_NULL(server, catta_is_valid_service_type_generic(service_type), CATTA_ERR_INVALID_SERVICE_TYPE);
+
+    if (!domain)
+        domain = server->domain_name;
+
+    if ((r = catta_service_name_join(n, sizeof(n), NULL, service_type, domain)) < 0) {
+        catta_server_set_errno(server, r);
+        return NULL;
+    }
+
+    if (!(b = catta_new(CattaSServiceBrowser, 1))) {
+        catta_server_set_errno(server, CATTA_ERR_NO_MEMORY);
+        return NULL;
+    }
+
+    b->server = server;
+    b->domain_name = b->service_type = NULL;
+    b->callback = callback;
+    b->userdata = userdata;
+    b->record_browser = NULL;
+
+    CATTA_LLIST_PREPEND(CattaSServiceBrowser, browser, server->service_browsers, b);
+
+    if (!(b->domain_name = catta_normalize_name_strdup(domain)) ||
+        !(b->service_type = catta_normalize_name_strdup(service_type))) {
+        catta_server_set_errno(server, CATTA_ERR_NO_MEMORY);
+        goto fail;
+    }
+
+    if (!(k = catta_key_new(n, CATTA_DNS_CLASS_IN, CATTA_DNS_TYPE_PTR))) {
+        catta_server_set_errno(server, CATTA_ERR_NO_MEMORY);
+        goto fail;
+    }
+
+    if (!(b->record_browser = catta_s_record_browser_new(server, iface, protocol, k, flags, record_browser_callback, b)))
+        goto fail;
+
+    catta_key_unref(k);
+
+    return b;
+
+fail:
+
+    if (k)
+        catta_key_unref(k);
+
+    catta_s_service_browser_free(b);
+    return NULL;
+}
+
+void catta_s_service_browser_free(CattaSServiceBrowser *b) {
+    assert(b);
+
+    CATTA_LLIST_REMOVE(CattaSServiceBrowser, browser, b->server->service_browsers, b);
+
+    if (b->record_browser)
+        catta_s_record_browser_free(b->record_browser);
+
+    catta_free(b->domain_name);
+    catta_free(b->service_type);
+    catta_free(b);
+}