diff options
Diffstat (limited to 'src/zeroconf/ZeroconfAvahi.cxx')
-rw-r--r-- | src/zeroconf/ZeroconfAvahi.cxx | 161 |
1 files changed, 87 insertions, 74 deletions
diff --git a/src/zeroconf/ZeroconfAvahi.cxx b/src/zeroconf/ZeroconfAvahi.cxx index 9643802ae..5adda38f9 100644 --- a/src/zeroconf/ZeroconfAvahi.cxx +++ b/src/zeroconf/ZeroconfAvahi.cxx @@ -38,20 +38,23 @@ static constexpr Domain avahi_domain("avahi"); -static char *avahiName; +static char *avahi_name; static MyAvahiPoll *avahi_poll; -static AvahiClient *avahiClient; -static AvahiEntryGroup *avahiGroup; +static AvahiClient *avahi_client; +static AvahiEntryGroup *avahi_group; -static void avahiRegisterService(AvahiClient * c); +static void +AvahiRegisterService(AvahiClient *c); -/* Callback when the EntryGroup changes state */ -static void avahiGroupCallback(AvahiEntryGroup * g, - AvahiEntryGroupState state, - gcc_unused void *userdata) +/** + * Callback when the EntryGroup changes state. + */ +static void +AvahiGroupCallback(AvahiEntryGroup *g, + AvahiEntryGroupState state, + gcc_unused void *userdata) { - char *n; - assert(g); + assert(g != nullptr); FormatDebug(avahi_domain, "Service group changed to state %d", state); @@ -61,53 +64,58 @@ static void avahiGroupCallback(AvahiEntryGroup * g, /* The entry group has been established successfully */ FormatDefault(avahi_domain, "Service '%s' successfully established.", - avahiName); + avahi_name); break; case AVAHI_ENTRY_GROUP_COLLISION: /* A service name collision happened. Let's pick a new name */ - n = avahi_alternative_service_name(avahiName); - avahi_free(avahiName); - avahiName = n; + { + char *n = avahi_alternative_service_name(avahi_name); + avahi_free(avahi_name); + avahi_name = n; + } FormatDefault(avahi_domain, "Service name collision, renaming service to '%s'", - avahiName); + avahi_name); /* And recreate the services */ - avahiRegisterService(avahi_entry_group_get_client(g)); + AvahiRegisterService(avahi_entry_group_get_client(g)); break; case AVAHI_ENTRY_GROUP_FAILURE: FormatError(avahi_domain, "Entry group failure: %s", - avahi_strerror(avahi_client_errno - (avahi_entry_group_get_client(g)))); - /* Some kind of failure happened while we were registering our services */ + avahi_strerror(avahi_client_errno(avahi_entry_group_get_client(g)))); + /* Some kind of failure happened while we were + registering our services */ break; case AVAHI_ENTRY_GROUP_UNCOMMITED: LogDebug(avahi_domain, "Service group is UNCOMMITED"); break; + case AVAHI_ENTRY_GROUP_REGISTERING: LogDebug(avahi_domain, "Service group is REGISTERING"); } } -/* Registers a new service with avahi */ -static void avahiRegisterService(AvahiClient * c) +/** + * Registers a new service with avahi. + */ +static void +AvahiRegisterService(AvahiClient *c) { - FormatDebug(avahi_domain, "Registering service %s/%s", - SERVICE_TYPE, avahiName); + assert(c != nullptr); - int ret; - assert(c); + FormatDebug(avahi_domain, "Registering service %s/%s", + SERVICE_TYPE, avahi_name); /* If this is the first time we're called, * let's create a new entry group */ - if (!avahiGroup) { - avahiGroup = avahi_entry_group_new(c, avahiGroupCallback, nullptr); - if (!avahiGroup) { + if (!avahi_group) { + avahi_group = avahi_entry_group_new(c, AvahiGroupCallback, nullptr); + if (!avahi_group) { FormatError(avahi_domain, "Failed to create avahi EntryGroup: %s", avahi_strerror(avahi_client_errno(c))); @@ -119,44 +127,48 @@ static void avahiRegisterService(AvahiClient * c) /* TODO: This currently binds to ALL interfaces. * We could maybe add a service per actual bound interface, * if that's better. */ - ret = avahi_entry_group_add_service(avahiGroup, - AVAHI_IF_UNSPEC, AVAHI_PROTO_UNSPEC, - AvahiPublishFlags(0), - avahiName, SERVICE_TYPE, nullptr, - nullptr, listen_port, nullptr); - if (ret < 0) { + int result = avahi_entry_group_add_service(avahi_group, + AVAHI_IF_UNSPEC, + AVAHI_PROTO_UNSPEC, + AvahiPublishFlags(0), + avahi_name, SERVICE_TYPE, + nullptr, nullptr, + listen_port, nullptr); + if (result < 0) { FormatError(avahi_domain, "Failed to add service %s: %s", - SERVICE_TYPE, avahi_strerror(ret)); + SERVICE_TYPE, avahi_strerror(result)); return; } /* Tell the server to register the service group */ - ret = avahi_entry_group_commit(avahiGroup); - if (ret < 0) { + result = avahi_entry_group_commit(avahi_group); + if (result < 0) { FormatError(avahi_domain, "Failed to commit service group: %s", - avahi_strerror(ret)); + avahi_strerror(result)); return; } } /* Callback when avahi changes state */ -static void avahiClientCallback(AvahiClient * c, AvahiClientState state, - gcc_unused void *userdata) +static void +MyAvahiClientCallback(AvahiClient *c, AvahiClientState state, + gcc_unused void *userdata) { - int reason; - assert(c); + assert(c != nullptr); /* Called whenever the client or server state changes */ FormatDebug(avahi_domain, "Client changed to state %d", state); switch (state) { + int reason; + case AVAHI_CLIENT_S_RUNNING: LogDebug(avahi_domain, "Client is RUNNING"); /* The server has startup successfully and registered its host * name on the network, so it's time to create our services */ - if (!avahiGroup) - avahiRegisterService(c); + if (avahi_group == nullptr) + AvahiRegisterService(c); break; case AVAHI_CLIENT_FAILURE: @@ -164,38 +176,39 @@ static void avahiClientCallback(AvahiClient * c, AvahiClientState state, if (reason == AVAHI_ERR_DISCONNECTED) { LogDefault(avahi_domain, "Client Disconnected, will reconnect shortly"); - if (avahiGroup) { - avahi_entry_group_free(avahiGroup); - avahiGroup = nullptr; + if (avahi_group != nullptr) { + avahi_entry_group_free(avahi_group); + avahi_group = nullptr; } - if (avahiClient) - avahi_client_free(avahiClient); - avahiClient = + + if (avahi_client != nullptr) + avahi_client_free(avahi_client); + avahi_client = avahi_client_new(avahi_poll, AVAHI_CLIENT_NO_FAIL, - avahiClientCallback, nullptr, + MyAvahiClientCallback, nullptr, &reason); - if (!avahiClient) { + if (avahi_client == nullptr) FormatWarning(avahi_domain, "Could not reconnect: %s", avahi_strerror(reason)); - } } else { FormatWarning(avahi_domain, "Client failure: %s (terminal)", avahi_strerror(reason)); } + break; case AVAHI_CLIENT_S_COLLISION: LogDebug(avahi_domain, "Client is COLLISION"); - /* Let's drop our registered services. When the server is back - * in AVAHI_SERVER_RUNNING state we will register them - * again with the new host name. */ - if (avahiGroup) { + /* Let's drop our registered services. When the server + is back in AVAHI_SERVER_RUNNING state we will + register them again with the new host name. */ + if (avahi_group != nullptr) { LogDebug(avahi_domain, "Resetting group"); - avahi_entry_group_reset(avahiGroup); + avahi_entry_group_reset(avahi_group); } break; @@ -208,9 +221,9 @@ static void avahiClientCallback(AvahiClient * c, AvahiClientState state, * for our own records to register until the host name is * properly esatblished. */ - if (avahiGroup) { + if (avahi_group != nullptr) { LogDebug(avahi_domain, "Resetting group"); - avahi_entry_group_reset(avahiGroup); + avahi_entry_group_reset(avahi_group); } break; @@ -229,15 +242,15 @@ AvahiInit(EventLoop &loop, const char *serviceName) if (!avahi_is_valid_service_name(serviceName)) FormatFatalError("Invalid zeroconf_name \"%s\"", serviceName); - avahiName = avahi_strdup(serviceName); + avahi_name = avahi_strdup(serviceName); avahi_poll = new MyAvahiPoll(loop); int error; - avahiClient = avahi_client_new(avahi_poll, AVAHI_CLIENT_NO_FAIL, - avahiClientCallback, nullptr, &error); - - if (!avahiClient) { + avahi_client = avahi_client_new(avahi_poll, AVAHI_CLIENT_NO_FAIL, + MyAvahiClientCallback, nullptr, + &error); + if (avahi_client == nullptr) { FormatError(avahi_domain, "Failed to create client: %s", avahi_strerror(error)); AvahiDeinit(); @@ -245,25 +258,25 @@ AvahiInit(EventLoop &loop, const char *serviceName) } void -AvahiDeinit(void) +AvahiDeinit() { LogDebug(avahi_domain, "Shutting down interface"); - if (avahiGroup) { - avahi_entry_group_free(avahiGroup); - avahiGroup = nullptr; + if (avahi_group != nullptr) { + avahi_entry_group_free(avahi_group); + avahi_group = nullptr; } - if (avahiClient) { - avahi_client_free(avahiClient); - avahiClient = nullptr; + if (avahi_client != nullptr) { + avahi_client_free(avahi_client); + avahi_client = nullptr; } delete avahi_poll; avahi_poll = nullptr; - avahi_free(avahiName); - avahiName = nullptr; + avahi_free(avahi_name); + avahi_name = nullptr; dbus_shutdown(); } |