From: Trent Lloyd Date: Fri, 26 Aug 2005 18:25:39 +0000 (+0000) Subject: * Implement the HostNameResolver in the avahi-client C api X-Git-Url: https://git.meshlink.io/?a=commitdiff_plain;h=45bf63f4c05690420fd2d701a6399550160aba02;p=catta * Implement the HostNameResolver in the avahi-client C api * Add HostNameResolver and ServiceResolver to client-test * Add get_client functions to all avahi-client browsers/resolvers git-svn-id: file:///home/lennart/svn/public/avahi/trunk@449 941a03a8-eaeb-0310-b9a0-b1bbd8fe43fe --- diff --git a/avahi-client/browser.c b/avahi-client/browser.c index 9a7438e..854ed1f 100644 --- a/avahi-client/browser.c +++ b/avahi-client/browser.c @@ -192,6 +192,12 @@ fail: return NULL; } +AvahiClient* avahi_domain_browser_get_client (AvahiDomainBrowser *b) +{ + assert(b); + return b->client; +} + int avahi_domain_browser_free (AvahiDomainBrowser *b) { AvahiClient *client; int r = AVAHI_OK; @@ -361,6 +367,12 @@ fail: return NULL; } +AvahiClient* avahi_service_type_browser_get_client (AvahiServiceTypeBrowser *b) +{ + assert(b); + return b->client; +} + int avahi_service_type_browser_free (AvahiServiceTypeBrowser *b) { AvahiClient *client; int r = AVAHI_OK; @@ -533,7 +545,13 @@ fail: return NULL; } - + +AvahiClient* avahi_service_browser_get_client (AvahiServiceBrowser *b) +{ + assert(b); + return b->client; +} + int avahi_service_browser_free (AvahiServiceBrowser *b) { AvahiClient *client; int r = AVAHI_OK; diff --git a/avahi-client/client-test.c b/avahi-client/client-test.c index 5f7f030..4142172 100644 --- a/avahi-client/client-test.c +++ b/avahi-client/client-test.c @@ -52,9 +52,29 @@ avahi_domain_browser_callback (AvahiDomainBrowser *b, AvahiIfIndex interface, Av printf ("XXX: Callback on %s, interface (%d), protocol (%d), event (%d), domain (%s), data (%s)\n", avahi_domain_browser_get_dbus_path (b), interface, protocol, event, domain, (char*)user_data); } +static void +avahi_service_resolver_callback (AvahiServiceResolver *r, AvahiIfIndex interface, AvahiProtocol protocol, AvahiResolverEvent event, const char *name, const char *type, const char *domain, const char *host_name, const AvahiAddress *a, uint16_t port, AvahiStringList *txt, void *user_data) +{ + char addr[64]; + char *txtr; + if (event == AVAHI_RESOLVER_TIMEOUT) + { + printf ("ServiceResolver timed out\n"); + return; + } + avahi_address_snprint (addr, sizeof (addr), a); + txtr = avahi_string_list_to_string (txt); + printf ("XXX: Callback on ServiceResolver, interface (%d), protocol (%d), event (%d), name (%s), type (%s), domain (%s), host_name (%s), address (%s), port (%d), txtdata (%s), data(%s)\n", interface, protocol, event, name, type, domain, host_name, addr, port, txtr, (char*)user_data); +} + static void avahi_service_browser_callback (AvahiServiceBrowser *b, AvahiIfIndex interface, AvahiProtocol protocol, AvahiBrowserEvent event, const char *name, const char *type, const char *domain, void *user_data) { + AvahiServiceResolver *sr; + if (b && name) + { + sr = avahi_service_resolver_new (avahi_service_browser_get_client (b), interface, protocol, name, type, domain, AF_UNSPEC, avahi_service_resolver_callback, "xxXXxx"); + } printf ("XXX: Callback on %s, interface (%d), protocol (%d), event (%d), name (%s), type (%s), domain (%s), data (%s)\n", avahi_service_browser_get_dbus_path (b), interface, protocol, event, name, type, domain, (char*)user_data); } @@ -64,6 +84,20 @@ avahi_service_type_browser_callback (AvahiServiceTypeBrowser *b, AvahiIfIndex in printf ("XXX: Callback on %s, interface (%d), protocol (%d), event (%d), type (%s), domain (%s), data (%s)\n", avahi_service_type_browser_get_dbus_path (b), interface, protocol, event, type, domain, (char*)user_data); } +static void +avahi_host_name_resolver_callback (AvahiHostNameResolver *r, AvahiIfIndex interface, AvahiProtocol protocol, AvahiResolverEvent event, const char *name, const AvahiAddress *a, void *user_data) +{ + char addr[64]; + + if (event == AVAHI_RESOLVER_TIMEOUT) + { + printf ("XXX: Callback on HostNameResolver, timed out.\n"); + return; + } + avahi_address_snprint (addr, sizeof (addr), a); + printf ("XXX: Callback on HostNameResolver, interface (%d), protocol (%d), event (%d), name (%s), address (%s), data (%s)\n", interface, protocol, event, name, addr, (char*)user_data); +} + static void test_free_domain_browser(AvahiTimeout *timeout, void* userdata) { AvahiServiceBrowser *b = userdata; @@ -101,6 +135,7 @@ int main (int argc, char *argv[]) { AvahiDomainBrowser *domain; AvahiServiceBrowser *sb; AvahiServiceTypeBrowser *st; + AvahiHostNameResolver *hnr; const char *ret; int error; struct timeval tv; @@ -157,6 +192,12 @@ int main (int argc, char *argv[]) { else printf ("Sucessfully created service browser, path %s\n", avahi_service_browser_get_dbus_path (sb)); + hnr = avahi_host_name_resolver_new (avahi, AVAHI_IF_UNSPEC, AF_UNSPEC, "hotbox.local", AF_UNSPEC, avahi_host_name_resolver_callback, "omghai4u"); + if (hnr == NULL) + printf ("Failed to create hostname resolver object\n"); + else + printf ("Successfully created hostname resolver object\n"); + avahi_elapse_time(&tv, 8000, 0); poll_api->timeout_new(poll_api, &tv, test_entry_group_reset, group); diff --git a/avahi-client/client.h b/avahi-client/client.h index 20054ad..4db2aef 100644 --- a/avahi-client/client.h +++ b/avahi-client/client.h @@ -66,6 +66,9 @@ typedef struct AvahiServiceTypeBrowser AvahiServiceTypeBrowser; /** A service resolver object */ typedef struct AvahiServiceResolver AvahiServiceResolver; +/** A service resolver object */ +typedef struct AvahiHostNameResolver AvahiHostNameResolver; + /** States of a client object, a superset of AvahiServerState */ typedef enum { AVAHI_CLIENT_S_INVALID = AVAHI_SERVER_INVALID, @@ -105,6 +108,16 @@ typedef void (*AvahiServiceResolverCallback) ( AvahiStringList *txt, void *userdata); +/** The function prototype for the callback of an AvahiHostNameResolver */ +typedef void (*AvahiHostNameResolverCallback) ( + AvahiHostNameResolver *r, + AvahiIfIndex interface, + AvahiProtocol protocol, + AvahiResolverEvent event, + const char *name, + const AvahiAddress *a, + void *userdata); + /** Creates a new client instance */ AvahiClient* avahi_client_new (const AvahiPoll *poll_api, AvahiClientCallback callback, void *userdata, int *error); @@ -198,6 +211,9 @@ AvahiDomainBrowser* avahi_domain_browser_new (AvahiClient *client, AvahiDomainBrowserCallback callback, void *userdata); +/** Get the parent client of an AvahiDomainBrowser object */ +AvahiClient* avahi_domain_browser_get_client (AvahiDomainBrowser *); + /** Get the D-Bus path of an AvahiDomainBrowser object, for debugging purposes only. */ const char* avahi_domain_browser_get_dbus_path (AvahiDomainBrowser *); @@ -213,6 +229,9 @@ AvahiServiceTypeBrowser* avahi_service_type_browser_new ( AvahiServiceTypeBrowserCallback callback, void *userdata); +/** Get the parent client of an AvahiServiceTypeBrowser object */ +AvahiClient* avahi_service_type_browser_get_client (AvahiServiceTypeBrowser *); + /** Get the D-Bus path of an AvahiServiceTypeBrowser object, for debugging purposes only. */ const char* avahi_service_type_browser_get_dbus_path(AvahiServiceTypeBrowser *); @@ -232,6 +251,9 @@ AvahiServiceBrowser* avahi_service_browser_new ( /** Get the D-Bus path of an AvahiServiceBrowser object, for debugging purposes only. */ const char* avahi_service_browser_get_dbus_path (AvahiServiceBrowser *); +/** Get the parent client of an AvahiServiceBrowser object */ +AvahiClient* avahi_service_browser_get_client (AvahiServiceBrowser *); + /* Cleans up and frees an AvahiServiceBrowser object */ int avahi_service_browser_free (AvahiServiceBrowser *); @@ -247,12 +269,34 @@ AvahiServiceResolver * avahi_service_resolver_new( AvahiServiceResolverCallback callback, void *userdata); +/** Get the parent client of an AvahiServiceResolver object */ +AvahiClient* avahi_service_resolver_get_client (AvahiServiceResolver *); + /** Free a service resolver object */ int avahi_service_resolver_free(AvahiServiceResolver *r); /** Block until the resolving is complete */ int avahi_service_resolver_block(AvahiServiceResolver *r); +/** Create a new hostname resolver object */ +AvahiHostNameResolver * avahi_host_name_resolver_new( + AvahiClient *client, + AvahiIfIndex interface, + AvahiProtocol protocol, + const char *name, + AvahiProtocol aprotocol, + AvahiHostNameResolverCallback callback, + void *userdata); + +/** Get the parent client of an AvahiHostNameResolver object */ +AvahiClient* avahi_host_name_resolver_get_client (AvahiHostNameResolver *); + +/** Free a hostname resolver object */ +int avahi_host_name_resolver_free(AvahiHostNameResolver *r); + +/** Block until the resolving is complete */ +int avahi_host_name_resolver_block(AvahiHostNameResolver *r); + #ifndef DOXYGEN_SHOULD_SKIP_THIS AVAHI_C_DECL_END #endif diff --git a/avahi-client/internal.h b/avahi-client/internal.h index 1788122..4fc963f 100644 --- a/avahi-client/internal.h +++ b/avahi-client/internal.h @@ -42,6 +42,7 @@ struct AvahiClient { AVAHI_LLIST_HEAD(AvahiServiceBrowser, service_browsers); AVAHI_LLIST_HEAD(AvahiServiceTypeBrowser, service_type_browsers); AVAHI_LLIST_HEAD(AvahiServiceResolver, service_resolvers); + AVAHI_LLIST_HEAD(AvahiHostNameResolver, host_name_resolvers); }; struct AvahiEntryGroup { @@ -85,6 +86,15 @@ struct AvahiServiceResolver { AVAHI_LLIST_FIELDS(AvahiServiceResolver, service_resolvers); }; +struct AvahiHostNameResolver { + char *path; + DBusPendingCall *call; + AvahiClient *client; + AvahiHostNameResolverCallback callback; + void *userdata; + AVAHI_LLIST_FIELDS(AvahiHostNameResolver, host_name_resolvers); +}; + int avahi_client_set_errno (AvahiClient *client, int error); int avahi_client_set_dbus_error(AvahiClient *client, DBusError *error); diff --git a/avahi-client/resolver.c b/avahi-client/resolver.c index f23f9d7..2e44351 100644 --- a/avahi-client/resolver.c +++ b/avahi-client/resolver.c @@ -38,7 +38,8 @@ #include "client.h" #include "internal.h" -static void pending_call_callback(DBusPendingCall *pending, void *userdata) { +static void +service_pending_call_callback(DBusPendingCall *pending, void *userdata) { AvahiServiceResolver *r = userdata; DBusMessage *message = NULL; AvahiStringList *strlst = NULL; @@ -145,6 +146,63 @@ fail: dbus_error_free (&error); } +static void +hostname_pending_call_callback(DBusPendingCall *pending, void *userdata) { + AvahiHostNameResolver *r = userdata; + DBusMessage *message = NULL; + DBusError error; + + assert(pending); + assert(r); + + dbus_error_init(&error); + + if (!(message = dbus_pending_call_steal_reply(pending))) + goto fail; + + if (dbus_message_get_type(message) == DBUS_MESSAGE_TYPE_METHOD_RETURN) { + int32_t interface, protocol, aprotocol; + char *name, *address; + AvahiAddress a; + + if (!dbus_message_get_args( + message, &error, + DBUS_TYPE_INT32, &interface, + DBUS_TYPE_INT32, &protocol, + DBUS_TYPE_STRING, &name, + DBUS_TYPE_INT32, &aprotocol, + DBUS_TYPE_STRING, &address, + DBUS_TYPE_INVALID) || + dbus_error_is_set (&error)) { + fprintf(stderr, "Failed to parse resolver event.\n"); + goto fail; + } + + assert(address); + if (!avahi_address_parse(address, (AvahiProtocol) aprotocol, &a)) { + fprintf(stderr, "Failed to parse address\n"); + goto fail; + } + + r->callback(r, (AvahiIfIndex) interface, (AvahiProtocol) protocol, AVAHI_RESOLVER_FOUND, name, &a, r->userdata); + + } else { + + assert(dbus_message_get_type(message) == DBUS_MESSAGE_TYPE_ERROR); + + avahi_client_set_errno(r->client, avahi_error_dbus_to_number(dbus_message_get_error_name(message))); + + r->callback(r, (AvahiIfIndex) 0, (AvahiProtocol) 0, AVAHI_RESOLVER_TIMEOUT, NULL, NULL, r->userdata); + } + +fail: + + if (message) + dbus_message_unref(message); + + dbus_error_free (&error); +} + AvahiServiceResolver * avahi_service_resolver_new( AvahiClient *client, AvahiIfIndex interface, @@ -210,7 +268,7 @@ AvahiServiceResolver * avahi_service_resolver_new( } if (!dbus_connection_send_with_reply(client->bus, message, &r->call, -1) || - !dbus_pending_call_set_notify(r->call, pending_call_callback, r, NULL)) { + !dbus_pending_call_set_notify(r->call, service_pending_call_callback, r, NULL)) { avahi_client_set_errno(client, AVAHI_ERR_NO_MEMORY); goto fail; } @@ -236,6 +294,14 @@ fail: } +AvahiClient* avahi_service_resolver_get_client (AvahiServiceResolver *r) { + AvahiClient *client; + + assert (r); + + return r->client; +} + int avahi_service_resolver_free(AvahiServiceResolver *r) { AvahiClient *client; @@ -266,3 +332,123 @@ int avahi_service_resolver_block(AvahiServiceResolver *r) { return AVAHI_OK; } +AvahiHostNameResolver * avahi_host_name_resolver_new( + AvahiClient *client, + AvahiIfIndex interface, + AvahiProtocol protocol, + const char *name, + AvahiProtocol aprotocol, + AvahiHostNameResolverCallback callback, + void *userdata) { + + DBusError error; + AvahiHostNameResolver *r; + DBusMessage *message; + int32_t i_interface, i_protocol, i_aprotocol; + + assert(client); + assert(name); + + dbus_error_init (&error); + + if (client->state == AVAHI_CLIENT_DISCONNECTED) { + avahi_client_set_errno(client, AVAHI_ERR_BAD_STATE); + goto fail; + } + + if (!(r = avahi_new(AvahiHostNameResolver, 1))) { + avahi_client_set_errno(client, AVAHI_ERR_NO_MEMORY); + goto fail; + } + + r->client = client; + r->callback = callback; + r->userdata = userdata; + r->call = NULL; + + AVAHI_LLIST_PREPEND(AvahiHostNameResolver, host_name_resolvers, client->host_name_resolvers, r); + + if (!(message = dbus_message_new_method_call(AVAHI_DBUS_NAME, AVAHI_DBUS_PATH_SERVER, AVAHI_DBUS_INTERFACE_SERVER, "ResolveHostName"))) { + avahi_client_set_errno(client, AVAHI_ERR_NO_MEMORY); + goto fail; + } + + i_interface = interface; + i_protocol = protocol; + i_aprotocol = aprotocol; + + if (!(dbus_message_append_args( + message, + DBUS_TYPE_INT32, &i_interface, + DBUS_TYPE_INT32, &i_protocol, + DBUS_TYPE_STRING, &name, + DBUS_TYPE_INT32, &i_aprotocol, + DBUS_TYPE_INVALID))) { + avahi_client_set_errno(client, AVAHI_ERR_NO_MEMORY); + goto fail; + } + + if (!dbus_connection_send_with_reply(client->bus, message, &r->call, -1) || + !dbus_pending_call_set_notify(r->call, hostname_pending_call_callback, r, NULL)) { + avahi_client_set_errno(client, AVAHI_ERR_NO_MEMORY); + goto fail; + } + + dbus_message_unref(message); + + return r; + +fail: + + if (dbus_error_is_set(&error)) { + avahi_client_set_dbus_error(client, &error); + dbus_error_free(&error); + } + + if (r) + avahi_host_name_resolver_free(r); + + if (message) + dbus_message_unref(message); + + return NULL; + +} + +int avahi_host_name_resolver_free(AvahiHostNameResolver *r) { + AvahiClient *client; + + assert(r); + client = r->client; + + if (r->call) { + dbus_pending_call_cancel(r->call); + dbus_pending_call_unref(r->call); + } + + AVAHI_LLIST_REMOVE(AvahiHostNameResolver, host_name_resolvers, client->host_name_resolvers, r); + + avahi_free(r); + + return AVAHI_OK; +} + +AvahiClient* avahi_host_name_resolver_get_client (AvahiHostNameResolver *r) { + AvahiClient *client; + + assert (r); + + return r->client; +} + +int avahi_host_name_resolver_block(AvahiHostNameResolver *r) { + AvahiClient *client; + + assert(r); + client = r->client; + + if (r->call) + dbus_pending_call_block(r->call); + + return AVAHI_OK; +}