コード例 #1
0
static AvahiEntry *server_add_ptr_internal(
    AvahiServer *s,
    AvahiSEntryGroup *g,
    AvahiIfIndex interface,
    AvahiProtocol protocol,
    AvahiPublishFlags flags,
    uint32_t ttl,
    const char *name,
    const char *dest) {

    AvahiRecord *r;
    AvahiEntry *e;
    
    assert(s);
    assert(dest);

    AVAHI_CHECK_VALIDITY_RETURN_NULL(s, !name || avahi_is_valid_domain_name(name), AVAHI_ERR_INVALID_HOST_NAME);
    AVAHI_CHECK_VALIDITY_RETURN_NULL(s, avahi_is_valid_domain_name(dest), AVAHI_ERR_INVALID_HOST_NAME);

    if (!name)
        name = s->host_name_fqdn;

    if (!(r = avahi_record_new_full(name, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_PTR, ttl))) {
        avahi_server_set_errno(s, AVAHI_ERR_NO_MEMORY);
        return NULL;
    }
        
    r->data.ptr.name = avahi_normalize_name_strdup(dest);
    e = server_add_internal(s, g, interface, protocol, flags, r);
    avahi_record_unref(r);
    return e;
}
コード例 #2
0
ファイル: domain.c プロジェクト: JDsolution/ipnc
int avahi_is_valid_fqdn(const char *t) {
    char label[AVAHI_LABEL_MAX];
    char normalized[AVAHI_DOMAIN_NAME_MAX];
    const char *k = t;
    AvahiAddress a;
    assert(t);

    if (strlen(t) >= AVAHI_DOMAIN_NAME_MAX)
        return 0;

    if (!avahi_is_valid_domain_name(t))
        return 0;

    /* Check if there are at least two labels*/
    if (!(avahi_unescape_label(&k, label, sizeof(label))))
        return 0;

    if (label[0] == 0 || !k)
        return 0;

    if (!(avahi_unescape_label(&k, label, sizeof(label))))
        return 0;

    if (label[0] == 0 || !k)
        return 0;

    /* Make sure that the name is not an IP address */
    if (!(avahi_normalize_name(t, normalized, sizeof(normalized))))
        return 0;
    
    if (avahi_address_parse(normalized, AVAHI_PROTO_UNSPEC, &a))
        return 0;

    return 1;
}
コード例 #3
0
int avahi_server_add_dns_server_address(
    AvahiServer *s,
    AvahiSEntryGroup *g,
    AvahiIfIndex interface,
    AvahiProtocol protocol,
    AvahiPublishFlags flags,
    const char *domain,
    AvahiDNSServerType type,
    const AvahiAddress *address,
    uint16_t port /** should be 53 */) {

    AvahiRecord *r;
    char n[64], h[64];
    AvahiEntry *a_entry, *s_entry;

    assert(s);
    assert(address);

    AVAHI_CHECK_VALIDITY(s, AVAHI_IF_VALID(interface), AVAHI_ERR_INVALID_INTERFACE);
    AVAHI_CHECK_VALIDITY(s, AVAHI_PROTO_VALID(protocol) && AVAHI_PROTO_VALID(address->proto), AVAHI_ERR_INVALID_PROTOCOL);
    AVAHI_CHECK_VALIDITY(s, AVAHI_FLAGS_VALID(flags, AVAHI_PUBLISH_USE_MULTICAST|AVAHI_PUBLISH_USE_WIDE_AREA), AVAHI_ERR_INVALID_FLAGS);
    AVAHI_CHECK_VALIDITY(s, type == AVAHI_DNS_SERVER_UPDATE || type == AVAHI_DNS_SERVER_RESOLVE, AVAHI_ERR_INVALID_FLAGS);
    AVAHI_CHECK_VALIDITY(s, port != 0, AVAHI_ERR_INVALID_PORT);
    AVAHI_CHECK_VALIDITY(s, !domain || avahi_is_valid_domain_name(domain), AVAHI_ERR_INVALID_DOMAIN_NAME);

    if (!domain)
        domain = s->domain_name;

    transport_flags_from_domain(s, &flags, domain);
    AVAHI_CHECK_VALIDITY(s, flags & AVAHI_PUBLISH_USE_MULTICAST, AVAHI_ERR_NOT_SUPPORTED);
    
    if (address->proto == AVAHI_PROTO_INET) {
        hexstring(h, sizeof(h), &address->data, sizeof(AvahiIPv4Address));
        snprintf(n, sizeof(n), "ip-%s.%s", h, domain);
        r = avahi_record_new_full(n, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_A, AVAHI_DEFAULT_TTL_HOST_NAME);
        r->data.a.address = address->data.ipv4;
    } else {
        hexstring(h, sizeof(h), &address->data, sizeof(AvahiIPv6Address));
        snprintf(n, sizeof(n), "ip6-%s.%s", h, domain);
        r = avahi_record_new_full(n, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_AAAA, AVAHI_DEFAULT_TTL_HOST_NAME);
        r->data.aaaa.address = address->data.ipv6;
    }

    if (!r)
        return avahi_server_set_errno(s, AVAHI_ERR_NO_MEMORY);
    
    a_entry = server_add_internal(s, g, interface, protocol, AVAHI_PUBLISH_UNIQUE | AVAHI_PUBLISH_ALLOW_MULTIPLE, r);
    avahi_record_unref(r);

    if (!a_entry)
        return avahi_server_errno(s);
    
    if (!(s_entry = server_add_dns_server_name(s, g, interface, protocol, flags, domain, type, n, port))) {
        if (!(flags & AVAHI_PUBLISH_UPDATE))
            avahi_entry_free(s, a_entry);
        return avahi_server_errno(s);
    }

    return AVAHI_OK;
}
コード例 #4
0
static int server_update_service_txt_strlst_nocopy(
    AvahiServer *s,
    AvahiSEntryGroup *g,
    AvahiIfIndex interface,
    AvahiProtocol protocol,
    AvahiPublishFlags flags,
    const char *name,     
    const char *type,     
    const char *domain,   
    AvahiStringList *strlst) {

    char svc_name[AVAHI_DOMAIN_NAME_MAX];
    int ret = AVAHI_OK;
    AvahiEntry *e;
    
    assert(s);
    assert(type);
    assert(name);

    AVAHI_CHECK_VALIDITY_SET_RET_GOTO_FAIL(s, AVAHI_IF_VALID(interface), AVAHI_ERR_INVALID_INTERFACE);
    AVAHI_CHECK_VALIDITY_SET_RET_GOTO_FAIL(s, AVAHI_PROTO_VALID(protocol), AVAHI_ERR_INVALID_PROTOCOL);
    AVAHI_CHECK_VALIDITY_SET_RET_GOTO_FAIL(s, AVAHI_FLAGS_VALID(flags,
                                                                AVAHI_PUBLISH_NO_COOKIE|
                                                                AVAHI_PUBLISH_USE_WIDE_AREA|
                                                                AVAHI_PUBLISH_USE_MULTICAST), AVAHI_ERR_INVALID_FLAGS);
    AVAHI_CHECK_VALIDITY_SET_RET_GOTO_FAIL(s, avahi_is_valid_service_name(name), AVAHI_ERR_INVALID_SERVICE_NAME);
    AVAHI_CHECK_VALIDITY_SET_RET_GOTO_FAIL(s, avahi_is_valid_service_type_strict(type), AVAHI_ERR_INVALID_SERVICE_TYPE);
    AVAHI_CHECK_VALIDITY_SET_RET_GOTO_FAIL(s, !domain || avahi_is_valid_domain_name(domain), AVAHI_ERR_INVALID_DOMAIN_NAME);

    if (!domain)
        domain = s->domain_name;

    transport_flags_from_domain(s, &flags, domain);
    AVAHI_CHECK_VALIDITY_SET_RET_GOTO_FAIL(s, flags & AVAHI_PUBLISH_USE_MULTICAST, AVAHI_ERR_NOT_SUPPORTED);

    if ((ret = avahi_service_name_join(svc_name, sizeof(svc_name), name, type, domain)) < 0) {
        avahi_server_set_errno(s, ret);
        goto fail;
    }

    /* Add TXT record */
    if (!(flags & AVAHI_PUBLISH_NO_COOKIE))
        strlst = add_magic_cookie(s, strlst);
    
    e = server_add_txt_strlst_nocopy(s, g, interface, protocol, AVAHI_PUBLISH_UNIQUE | AVAHI_PUBLISH_UPDATE, AVAHI_DEFAULT_TTL, svc_name, strlst);
    strlst = NULL;

    if (!e)
        ret = avahi_server_errno(s);
    
fail:
    
    avahi_string_list_free(strlst);
    
    return ret;
}
コード例 #5
0
static AvahiEntry *server_add_dns_server_name(
    AvahiServer *s,
    AvahiSEntryGroup *g,
    AvahiIfIndex interface,
    AvahiProtocol protocol,
    AvahiPublishFlags flags,
    const char *domain,
    AvahiDNSServerType type,
    const char *name,
    uint16_t port /** should be 53 */) {

    AvahiEntry *e;
    char t[AVAHI_DOMAIN_NAME_MAX], normalized_d[AVAHI_DOMAIN_NAME_MAX], *n;
    
    AvahiRecord *r;
    
    assert(s);
    assert(name);

    AVAHI_CHECK_VALIDITY_RETURN_NULL(s, AVAHI_FLAGS_VALID(flags, AVAHI_PUBLISH_USE_WIDE_AREA|AVAHI_PUBLISH_USE_MULTICAST), AVAHI_ERR_INVALID_FLAGS);
    AVAHI_CHECK_VALIDITY_RETURN_NULL(s, type == AVAHI_DNS_SERVER_UPDATE || type == AVAHI_DNS_SERVER_RESOLVE, AVAHI_ERR_INVALID_FLAGS);
    AVAHI_CHECK_VALIDITY_RETURN_NULL(s, port != 0, AVAHI_ERR_INVALID_PORT);
    AVAHI_CHECK_VALIDITY_RETURN_NULL(s, avahi_is_valid_fqdn(name), AVAHI_ERR_INVALID_HOST_NAME);
    AVAHI_CHECK_VALIDITY_RETURN_NULL(s, !domain || avahi_is_valid_domain_name(domain), AVAHI_ERR_INVALID_DOMAIN_NAME);
    
    if (!domain)
        domain = s->domain_name;

    transport_flags_from_domain(s, &flags, domain);
    AVAHI_CHECK_VALIDITY_RETURN_NULL(s, flags & AVAHI_PUBLISH_USE_MULTICAST, AVAHI_ERR_NOT_SUPPORTED);

    if (!(n = avahi_normalize_name_strdup(name))) {
        avahi_server_set_errno(s, AVAHI_ERR_NO_MEMORY);
        return NULL;
    }
    
    AVAHI_ASSERT_TRUE(avahi_normalize_name(domain, normalized_d, sizeof(normalized_d)));

    snprintf(t, sizeof(t), "%s.%s", type == AVAHI_DNS_SERVER_RESOLVE ? "_domain._udp" : "_dns-update._udp", normalized_d);
    
    if (!(r = avahi_record_new_full(t, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_SRV, AVAHI_DEFAULT_TTL_HOST_NAME))) {
        avahi_server_set_errno(s, AVAHI_ERR_NO_MEMORY);
        avahi_free(n);
        return NULL;
    }
    
    r->data.srv.priority = 0;
    r->data.srv.weight = 0;
    r->data.srv.port = port;
    r->data.srv.name = n;
    e = server_add_internal(s, g, interface, protocol, 0, r);
    avahi_record_unref(r);

    return e;
}
コード例 #6
0
int avahi_server_add_service_subtype(
    AvahiServer *s,
    AvahiSEntryGroup *g,
    AvahiIfIndex interface,
    AvahiProtocol protocol,
    AvahiPublishFlags flags,
    const char *name,        
    const char *type,        
    const char *domain,      
    const char *subtype) {

    int ret = AVAHI_OK;
    char svc_name[AVAHI_DOMAIN_NAME_MAX], ptr_name[AVAHI_DOMAIN_NAME_MAX];
    
    assert(name);
    assert(type);
    assert(subtype);

    AVAHI_CHECK_VALIDITY_SET_RET_GOTO_FAIL(s, AVAHI_IF_VALID(interface), AVAHI_ERR_INVALID_INTERFACE);
    AVAHI_CHECK_VALIDITY_SET_RET_GOTO_FAIL(s, AVAHI_PROTO_VALID(protocol), AVAHI_ERR_INVALID_PROTOCOL);
    AVAHI_CHECK_VALIDITY_SET_RET_GOTO_FAIL(s, AVAHI_FLAGS_VALID(flags, AVAHI_PUBLISH_USE_MULTICAST|AVAHI_PUBLISH_USE_WIDE_AREA), AVAHI_ERR_INVALID_FLAGS);
    AVAHI_CHECK_VALIDITY_SET_RET_GOTO_FAIL(s, avahi_is_valid_service_name(name), AVAHI_ERR_INVALID_SERVICE_NAME);
    AVAHI_CHECK_VALIDITY_SET_RET_GOTO_FAIL(s, avahi_is_valid_service_type_strict(type), AVAHI_ERR_INVALID_SERVICE_TYPE);
    AVAHI_CHECK_VALIDITY_SET_RET_GOTO_FAIL(s, !domain || avahi_is_valid_domain_name(domain), AVAHI_ERR_INVALID_DOMAIN_NAME);
    AVAHI_CHECK_VALIDITY_SET_RET_GOTO_FAIL(s, avahi_is_valid_service_subtype(subtype), AVAHI_ERR_INVALID_SERVICE_SUBTYPE);

    if (!domain)
        domain = s->domain_name;

    transport_flags_from_domain(s, &flags, domain);
    AVAHI_CHECK_VALIDITY_SET_RET_GOTO_FAIL(s, flags & AVAHI_PUBLISH_USE_MULTICAST, AVAHI_ERR_NOT_SUPPORTED);

    if ((ret = avahi_service_name_join(svc_name, sizeof(svc_name), name, type, domain)) < 0 ||
        (ret = avahi_service_name_join(ptr_name, sizeof(ptr_name), NULL, subtype, domain)) < 0) {
        avahi_server_set_errno(s, ret);
        goto fail;
    }

    if ((ret = avahi_server_add_ptr(s, g, interface, protocol, 0, AVAHI_DEFAULT_TTL, ptr_name, svc_name)) < 0)
        goto fail;

fail:
    
    return ret;
}
コード例 #7
0
ファイル: domain.c プロジェクト: JDsolution/ipnc
int avahi_service_name_join(char *p, size_t size, const char *name, const char *type, const char *domain) {
    char escaped_name[AVAHI_LABEL_MAX*4];
    char normalized_type[AVAHI_DOMAIN_NAME_MAX];
    char normalized_domain[AVAHI_DOMAIN_NAME_MAX];
    
    assert(p);

    /* Validity checks */
    
    if ((name && !avahi_is_valid_service_name(name)))
        return AVAHI_ERR_INVALID_SERVICE_NAME;

    if (!avahi_is_valid_service_type_generic(type))
        return AVAHI_ERR_INVALID_SERVICE_TYPE;
        
    if (!avahi_is_valid_domain_name(domain))
        return AVAHI_ERR_INVALID_DOMAIN_NAME;

    /* Preparation */
    
    if (name) {
        size_t l = sizeof(escaped_name);
        char *e = escaped_name, *r;
        r = avahi_escape_label(name, strlen(name), &e, &l);
        assert(r);
    }

    if (!(avahi_normalize_name(type, normalized_type, sizeof(normalized_type))))
        return AVAHI_ERR_INVALID_SERVICE_TYPE;

    if (!(avahi_normalize_name(domain, normalized_domain, sizeof(normalized_domain))))
        return AVAHI_ERR_INVALID_DOMAIN_NAME;

    /* Concatenation */
    
    snprintf(p, size, "%s%s%s.%s", name ? escaped_name : "", name ? "." : "", normalized_type, normalized_domain);

    return AVAHI_OK;
}
コード例 #8
0
ファイル: main.c プロジェクト: JDsolution/ipnc
static void update_browse_domains(void) {
    AvahiStringList *l;
    int n;
    char **p;

    if (!resolv_conf_search_domains) {
        avahi_server_set_browse_domains(avahi_server, NULL);
        return;
    }

    l = avahi_string_list_copy(config.server_config.browse_domains);

    for (p = resolv_conf_search_domains, n = 0; *p && n < BROWSE_DOMAINS_MAX; p++, n++) {
        if (!avahi_is_valid_domain_name(*p))
            avahi_log_warn("'%s' is no valid domain name, ignoring.", *p);
        else
            l = avahi_string_list_add(l, *p);
    }

    l = filter_duplicate_domains(l);

    avahi_server_set_browse_domains(avahi_server, l);
}
コード例 #9
0
DBusHandlerResult avahi_dbus_msg_entry_group_impl(DBusConnection *c, DBusMessage *m, void *userdata) {
    DBusError error;
    EntryGroupInfo *i = userdata;

    assert(c);
    assert(m);
    assert(i);

    dbus_error_init(&error);

    avahi_log_debug(__FILE__": interface=%s, path=%s, member=%s",
                    dbus_message_get_interface(m),
                    dbus_message_get_path(m),
                    dbus_message_get_member(m));

    /* Introspection */
    if (dbus_message_is_method_call(m, DBUS_INTERFACE_INTROSPECTABLE, "Introspect"))
        return avahi_dbus_handle_introspect(c, m, "org.freedesktop.Avahi.EntryGroup.xml");

    /* Access control */
    if (strcmp(dbus_message_get_sender(m), i->client->name))
        return avahi_dbus_respond_error(c, m, AVAHI_ERR_ACCESS_DENIED, NULL);

    if (dbus_message_is_method_call(m, AVAHI_DBUS_INTERFACE_ENTRY_GROUP, "Free")) {

        if (!dbus_message_get_args(m, &error, DBUS_TYPE_INVALID)) {
            avahi_log_warn("Error parsing EntryGroup::Free message");
            goto fail;
        }

        avahi_dbus_entry_group_free(i);
        return avahi_dbus_respond_ok(c, m);

    } else if (dbus_message_is_method_call(m, AVAHI_DBUS_INTERFACE_ENTRY_GROUP, "Commit")) {

        if (!dbus_message_get_args(m, &error, DBUS_TYPE_INVALID)) {
            avahi_log_warn("Error parsing EntryGroup::Commit message");
            goto fail;
        }

        if (avahi_s_entry_group_commit(i->entry_group) < 0)
            return avahi_dbus_respond_error(c, m, avahi_server_errno(avahi_server), NULL);

        return avahi_dbus_respond_ok(c, m);


    } else if (dbus_message_is_method_call(m, AVAHI_DBUS_INTERFACE_ENTRY_GROUP, "Reset")) {

        if (!dbus_message_get_args(m, &error, DBUS_TYPE_INVALID)) {
            avahi_log_warn("Error parsing EntryGroup::Reset message");
            goto fail;
        }

        avahi_s_entry_group_reset(i->entry_group);
        i->n_entries = 0;
        return avahi_dbus_respond_ok(c, m);

    } else if (dbus_message_is_method_call(m, AVAHI_DBUS_INTERFACE_ENTRY_GROUP, "IsEmpty")) {

        if (!dbus_message_get_args(m, &error, DBUS_TYPE_INVALID)) {
            avahi_log_warn("Error parsing EntryGroup::IsEmpty message");
            goto fail;
        }

        return avahi_dbus_respond_boolean(c, m, !!avahi_s_entry_group_is_empty(i->entry_group));

    } else if (dbus_message_is_method_call(m, AVAHI_DBUS_INTERFACE_ENTRY_GROUP, "GetState")) {
        AvahiEntryGroupState state;

        if (!dbus_message_get_args(m, &error, DBUS_TYPE_INVALID)) {
            avahi_log_warn("Error parsing EntryGroup::GetState message");
            goto fail;
        }

        state = avahi_s_entry_group_get_state(i->entry_group);
        return avahi_dbus_respond_int32(c, m, (int32_t) state);

    } else if (dbus_message_is_method_call(m, AVAHI_DBUS_INTERFACE_ENTRY_GROUP, "AddService")) {
        int32_t interface, protocol;
        uint32_t flags;
        char *type, *name, *domain, *host;
        uint16_t port;
        AvahiStringList *strlst = NULL;

        if (!dbus_message_get_args(
                m, &error,
                DBUS_TYPE_INT32, &interface,
                DBUS_TYPE_INT32, &protocol,
                DBUS_TYPE_UINT32, &flags,
                DBUS_TYPE_STRING, &name,
                DBUS_TYPE_STRING, &type,
                DBUS_TYPE_STRING, &domain,
                DBUS_TYPE_STRING, &host,
                DBUS_TYPE_UINT16, &port,
                DBUS_TYPE_INVALID) ||
            !type || !name ||
            avahi_dbus_read_strlst(m, 8, &strlst) < 0) {
            avahi_log_warn("Error parsing EntryGroup::AddService message");
            goto fail;
        }

        if (!(flags & AVAHI_PUBLISH_UPDATE) && i->n_entries >= server->n_entries_per_entry_group_max) {
            avahi_string_list_free(strlst);
            return avahi_dbus_respond_error(c, m, AVAHI_ERR_TOO_MANY_ENTRIES, NULL);
        }

        if (domain && !*domain)
            domain = NULL;

        if (host && !*host)
            host = NULL;

        if (avahi_server_add_service_strlst(avahi_server, i->entry_group, (AvahiIfIndex) interface, (AvahiProtocol) protocol, (AvahiPublishFlags) flags, name, type, domain, host, port, strlst) < 0) {
            avahi_string_list_free(strlst);
            return avahi_dbus_respond_error(c, m, avahi_server_errno(avahi_server), NULL);
        }

        if (!(flags & AVAHI_PUBLISH_UPDATE))
            i->n_entries ++;

        avahi_string_list_free(strlst);

        return avahi_dbus_respond_ok(c, m);

    } else if (dbus_message_is_method_call(m, AVAHI_DBUS_INTERFACE_ENTRY_GROUP, "AddServiceSubtype")) {

        int32_t interface, protocol;
        uint32_t flags;
        char *type, *name, *domain, *subtype;

        if (!dbus_message_get_args(
                m, &error,
                DBUS_TYPE_INT32, &interface,
                DBUS_TYPE_INT32, &protocol,
                DBUS_TYPE_UINT32, &flags,
                DBUS_TYPE_STRING, &name,
                DBUS_TYPE_STRING, &type,
                DBUS_TYPE_STRING, &domain,
                DBUS_TYPE_STRING, &subtype,
                DBUS_TYPE_INVALID) || !type || !name || !subtype) {
            avahi_log_warn("Error parsing EntryGroup::AddServiceSubtype message");
            goto fail;
        }

        if (!(flags & AVAHI_PUBLISH_UPDATE) && i->n_entries >= server->n_entries_per_entry_group_max)
            return avahi_dbus_respond_error(c, m, AVAHI_ERR_TOO_MANY_ENTRIES, NULL);

        if (domain && !*domain)
            domain = NULL;

        if (avahi_server_add_service_subtype(avahi_server, i->entry_group, (AvahiIfIndex) interface, (AvahiProtocol) protocol, (AvahiPublishFlags) flags, name, type, domain, subtype) < 0)
            return avahi_dbus_respond_error(c, m, avahi_server_errno(avahi_server), NULL);

        if (!(flags & AVAHI_PUBLISH_UPDATE))
            i->n_entries ++;

        return avahi_dbus_respond_ok(c, m);

    } else if (dbus_message_is_method_call(m, AVAHI_DBUS_INTERFACE_ENTRY_GROUP, "UpdateServiceTxt")) {
        int32_t interface, protocol;
        uint32_t flags;
        char *type, *name, *domain;
        AvahiStringList *strlst;

        if (!dbus_message_get_args(
                m, &error,
                DBUS_TYPE_INT32, &interface,
                DBUS_TYPE_INT32, &protocol,
                DBUS_TYPE_UINT32, &flags,
                DBUS_TYPE_STRING, &name,
                DBUS_TYPE_STRING, &type,
                DBUS_TYPE_STRING, &domain,
                DBUS_TYPE_INVALID) ||
            !type || !name ||
            avahi_dbus_read_strlst(m, 6, &strlst)) {
            avahi_log_warn("Error parsing EntryGroup::UpdateServiceTxt message");
            goto fail;
        }

        if (domain && !*domain)
            domain = NULL;

        if (avahi_server_update_service_txt_strlst(avahi_server, i->entry_group, (AvahiIfIndex) interface, (AvahiProtocol) protocol, (AvahiPublishFlags) flags, name, type, domain, strlst) < 0) {
            avahi_string_list_free(strlst);
            return avahi_dbus_respond_error(c, m, avahi_server_errno(avahi_server), NULL);
        }

        avahi_string_list_free(strlst);

        return avahi_dbus_respond_ok(c, m);

    } else if (dbus_message_is_method_call(m, AVAHI_DBUS_INTERFACE_ENTRY_GROUP, "AddAddress")) {
        int32_t interface, protocol;
        uint32_t flags;
        char *name, *address;
        AvahiAddress a;

        if (!dbus_message_get_args(
                m, &error,
                DBUS_TYPE_INT32, &interface,
                DBUS_TYPE_INT32, &protocol,
                DBUS_TYPE_UINT32, &flags,
                DBUS_TYPE_STRING, &name,
                DBUS_TYPE_STRING, &address,
                DBUS_TYPE_INVALID) || !name || !address) {
            avahi_log_warn("Error parsing EntryGroup::AddAddress message");
            goto fail;
        }

        if (!(flags & AVAHI_PUBLISH_UPDATE) && i->n_entries >= server->n_entries_per_entry_group_max)
            return avahi_dbus_respond_error(c, m, AVAHI_ERR_TOO_MANY_ENTRIES, NULL);

        if (!(avahi_address_parse(address, AVAHI_PROTO_UNSPEC, &a)))
            return avahi_dbus_respond_error(c, m, AVAHI_ERR_INVALID_ADDRESS, NULL);

        if (avahi_server_add_address(avahi_server, i->entry_group, (AvahiIfIndex) interface, (AvahiProtocol) protocol, (AvahiPublishFlags) flags, name, &a) < 0)
            return avahi_dbus_respond_error(c, m, avahi_server_errno(avahi_server), NULL);

        if (!(flags & AVAHI_PUBLISH_UPDATE))
            i->n_entries ++;

        return avahi_dbus_respond_ok(c, m);
    } else if (dbus_message_is_method_call(m, AVAHI_DBUS_INTERFACE_ENTRY_GROUP, "AddRecord")) {
        int32_t interface, protocol;
        uint32_t flags, ttl, size;
        uint16_t clazz, type;
        char *name;
        void *rdata;
        AvahiRecord *r;

        if (!dbus_message_get_args(
                m, &error,
                DBUS_TYPE_INT32, &interface,
                DBUS_TYPE_INT32, &protocol,
                DBUS_TYPE_UINT32, &flags,
                DBUS_TYPE_STRING, &name,
                DBUS_TYPE_UINT16, &clazz,
                DBUS_TYPE_UINT16, &type,
                DBUS_TYPE_UINT32, &ttl,
                DBUS_TYPE_INVALID) || !name ||
            avahi_dbus_read_rdata (m, 7, &rdata, &size)) {
            avahi_log_warn("Error parsing EntryGroup::AddRecord message");
            goto fail;
        }

        if (!(flags & AVAHI_PUBLISH_UPDATE) && i->n_entries >= server->n_entries_per_entry_group_max)
            return avahi_dbus_respond_error(c, m, AVAHI_ERR_TOO_MANY_ENTRIES, NULL);

        if (!avahi_is_valid_domain_name (name))
            return avahi_dbus_respond_error(c, m, AVAHI_ERR_INVALID_DOMAIN_NAME, NULL);

        if (!(r = avahi_record_new_full (name, clazz, type, ttl)))
            return avahi_dbus_respond_error(c, m, AVAHI_ERR_NO_MEMORY, NULL);

        if (avahi_rdata_parse (r, rdata, size) < 0) {
            avahi_record_unref (r);
            return avahi_dbus_respond_error(c, m, AVAHI_ERR_INVALID_RDATA, NULL);
        }

        if (avahi_server_add(avahi_server, i->entry_group, (AvahiIfIndex) interface, (AvahiProtocol) protocol, (AvahiPublishFlags) flags, r) < 0) {
            avahi_record_unref (r);
            return avahi_dbus_respond_error(c, m, avahi_server_errno(avahi_server), NULL);
        }

        if (!(flags & AVAHI_PUBLISH_UPDATE))
            i->n_entries ++;

        avahi_record_unref (r);

        return avahi_dbus_respond_ok(c, m);
    }


    avahi_log_warn("Missed message %s::%s()", dbus_message_get_interface(m), dbus_message_get_member(m));

fail:
    if (dbus_error_is_set(&error))
        dbus_error_free(&error);

    return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
}
コード例 #10
0
ファイル: browse-domain.c プロジェクト: lathiat/avahi
AvahiSDomainBrowser *avahi_s_domain_browser_prepare(
    AvahiServer *server,
    AvahiIfIndex interface,
    AvahiProtocol protocol,
    const char *domain,
    AvahiDomainBrowserType type,
    AvahiLookupFlags flags,
    AvahiSDomainBrowserCallback callback,
    void* userdata) {

    static const char * const type_table[AVAHI_DOMAIN_BROWSER_MAX] = {
        "b",
        "db",
        "r",
        "dr",
        "lb"
    };

    AvahiSDomainBrowser *b;
    AvahiKey *k = NULL;
    char n[AVAHI_DOMAIN_NAME_MAX];
    int r;

    assert(server);
    assert(callback);

    AVAHI_CHECK_VALIDITY_RETURN_NULL(server, AVAHI_IF_VALID(interface), AVAHI_ERR_INVALID_INTERFACE);
    AVAHI_CHECK_VALIDITY_RETURN_NULL(server, AVAHI_PROTO_VALID(protocol), AVAHI_ERR_INVALID_PROTOCOL);
    AVAHI_CHECK_VALIDITY_RETURN_NULL(server, type < AVAHI_DOMAIN_BROWSER_MAX, AVAHI_ERR_INVALID_FLAGS);
    AVAHI_CHECK_VALIDITY_RETURN_NULL(server, !domain || avahi_is_valid_domain_name(domain), AVAHI_ERR_INVALID_DOMAIN_NAME);
    AVAHI_CHECK_VALIDITY_RETURN_NULL(server, AVAHI_FLAGS_VALID(flags, AVAHI_LOOKUP_USE_WIDE_AREA|AVAHI_LOOKUP_USE_MULTICAST), AVAHI_ERR_INVALID_FLAGS);

    if (!domain)
        domain = server->domain_name;

    if ((r = avahi_service_name_join(n, sizeof(n), type_table[type], "_dns-sd._udp", domain)) < 0) {
        avahi_server_set_errno(server, r);
        return NULL;
    }

    if (!(b = avahi_new(AvahiSDomainBrowser, 1))) {
        avahi_server_set_errno(server, AVAHI_ERR_NO_MEMORY);
        return NULL;
    }

    b->ref = 1;
    b->server = server;
    b->callback = callback;
    b->userdata = userdata;
    b->record_browser = NULL;
    b->type = type;
    b->all_for_now_scheduled = 0;
    b->defer_event = NULL;

    AVAHI_LLIST_PREPEND(AvahiSDomainBrowser, browser, server->domain_browsers, b);

    if (!(k = avahi_key_new(n, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_PTR))) {
        avahi_server_set_errno(server, AVAHI_ERR_NO_MEMORY);
        goto fail;
    }

    if (!(b->record_browser = avahi_s_record_browser_prepare(server, interface, protocol, k, flags, record_browser_callback, b)))
        goto fail;

    avahi_key_unref(k);

    if (type == AVAHI_DOMAIN_BROWSER_BROWSE && b->server->config.browse_domains)
        b->defer_event = avahi_time_event_new(server->time_event_queue, NULL, defer_callback, b);

    return b;

fail:

    if (k)
        avahi_key_unref(k);

    avahi_s_domain_browser_free(b);

    return NULL;
}
コード例 #11
0
ファイル: resolve-service.c プロジェクト: JDsolution/ipnc
AvahiSServiceResolver *avahi_s_service_resolver_new(
    AvahiServer *server,
    AvahiIfIndex interface,
    AvahiProtocol protocol,
    const char *name,
    const char *type,
    const char *domain,
    AvahiProtocol aprotocol,
    AvahiLookupFlags flags,
    AvahiSServiceResolverCallback callback,
    void* userdata) {
    
    AvahiSServiceResolver *r;
    AvahiKey *k;
    char n[AVAHI_DOMAIN_NAME_MAX];
    int ret;
    
    assert(server);
    assert(type);
    assert(callback);

    AVAHI_CHECK_VALIDITY_RETURN_NULL(server, AVAHI_IF_VALID(interface), AVAHI_ERR_INVALID_INTERFACE);
    AVAHI_CHECK_VALIDITY_RETURN_NULL(server, AVAHI_PROTO_VALID(protocol), AVAHI_ERR_INVALID_PROTOCOL);
    AVAHI_CHECK_VALIDITY_RETURN_NULL(server, AVAHI_PROTO_VALID(aprotocol), AVAHI_ERR_INVALID_PROTOCOL);
    AVAHI_CHECK_VALIDITY_RETURN_NULL(server, !domain || avahi_is_valid_domain_name(domain), AVAHI_ERR_INVALID_DOMAIN_NAME);
    AVAHI_CHECK_VALIDITY_RETURN_NULL(server, !name || avahi_is_valid_service_name(name), AVAHI_ERR_INVALID_SERVICE_NAME);
    AVAHI_CHECK_VALIDITY_RETURN_NULL(server, avahi_is_valid_service_type_strict(type), AVAHI_ERR_INVALID_SERVICE_TYPE);
    AVAHI_CHECK_VALIDITY_RETURN_NULL(server, AVAHI_FLAGS_VALID(flags, AVAHI_LOOKUP_USE_WIDE_AREA|AVAHI_LOOKUP_USE_MULTICAST|AVAHI_LOOKUP_NO_TXT|AVAHI_LOOKUP_NO_ADDRESS), AVAHI_ERR_INVALID_FLAGS);

    if (!domain)
        domain = server->domain_name;

    if ((ret = avahi_service_name_join(n, sizeof(n), name, type, domain)) < 0) {
        avahi_server_set_errno(server, ret);
        return NULL;
    }
    
    if (!(r = avahi_new(AvahiSServiceResolver, 1))) {
        avahi_server_set_errno(server, AVAHI_ERR_NO_MEMORY);
        return NULL;
    }
    
    r->server = server;
    r->service_name = avahi_strdup(name);
    r->service_type = avahi_normalize_name_strdup(type);
    r->domain_name = avahi_normalize_name_strdup(domain);
    r->callback = callback;
    r->userdata = userdata;
    r->address_protocol = aprotocol;
    r->srv_record = r->txt_record = r->address_record = NULL;
    r->srv_flags = r->txt_flags = r->address_flags = 0;
    r->interface = interface;
    r->protocol = protocol;
    r->user_flags = flags;
    r->record_browser_a = r->record_browser_aaaa = r->record_browser_srv = r->record_browser_txt = NULL;
    r->time_event = NULL;
    AVAHI_LLIST_PREPEND(AvahiSServiceResolver, resolver, server->service_resolvers, r);

    k = avahi_key_new(n, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_SRV);
    r->record_browser_srv = avahi_s_record_browser_new(server, interface, protocol, k, flags & ~(AVAHI_LOOKUP_NO_TXT|AVAHI_LOOKUP_NO_ADDRESS), record_browser_callback, r);
    avahi_key_unref(k);

    if (!r->record_browser_srv) {
        avahi_s_service_resolver_free(r);
        return NULL;
    }

    if (!(flags & AVAHI_LOOKUP_NO_TXT)) {
        k = avahi_key_new(n, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_TXT);
        r->record_browser_txt = avahi_s_record_browser_new(server, interface, protocol, k, flags & ~(AVAHI_LOOKUP_NO_TXT|AVAHI_LOOKUP_NO_ADDRESS),  record_browser_callback, r);
        avahi_key_unref(k);
        
        if (!r->record_browser_txt) {
            avahi_s_service_resolver_free(r);
            return NULL;
        }
    }

    start_timeout(r);
    
    return r;
}
コード例 #12
0
static int server_add_service_strlst_nocopy(
    AvahiServer *s,
    AvahiSEntryGroup *g,
    AvahiIfIndex interface,
    AvahiProtocol protocol,
    AvahiPublishFlags flags,
    const char *name,
    const char *type,
    const char *domain,
    const char *host,
    uint16_t port,
    AvahiStringList *strlst) {

    char ptr_name[AVAHI_DOMAIN_NAME_MAX], svc_name[AVAHI_DOMAIN_NAME_MAX], enum_ptr[AVAHI_DOMAIN_NAME_MAX], *h = NULL;
    AvahiRecord *r = NULL;
    int ret = AVAHI_OK;
    AvahiEntry *srv_entry = NULL, *txt_entry = NULL, *ptr_entry = NULL, *enum_entry = NULL;
    
    assert(s);
    assert(type);
    assert(name);

    AVAHI_CHECK_VALIDITY_SET_RET_GOTO_FAIL(s, AVAHI_IF_VALID(interface), AVAHI_ERR_INVALID_INTERFACE);
    AVAHI_CHECK_VALIDITY_SET_RET_GOTO_FAIL(s, AVAHI_PROTO_VALID(protocol), AVAHI_ERR_INVALID_PROTOCOL);
    AVAHI_CHECK_VALIDITY_SET_RET_GOTO_FAIL(s, AVAHI_FLAGS_VALID(flags,
                                                                AVAHI_PUBLISH_NO_COOKIE|
                                                                AVAHI_PUBLISH_UPDATE|
                                                                AVAHI_PUBLISH_USE_WIDE_AREA|
                                                                AVAHI_PUBLISH_USE_MULTICAST), AVAHI_ERR_INVALID_FLAGS);
    AVAHI_CHECK_VALIDITY_SET_RET_GOTO_FAIL(s, avahi_is_valid_service_name(name), AVAHI_ERR_INVALID_SERVICE_NAME);
    AVAHI_CHECK_VALIDITY_SET_RET_GOTO_FAIL(s, avahi_is_valid_service_type_strict(type), AVAHI_ERR_INVALID_SERVICE_TYPE);
    AVAHI_CHECK_VALIDITY_SET_RET_GOTO_FAIL(s, !domain || avahi_is_valid_domain_name(domain), AVAHI_ERR_INVALID_DOMAIN_NAME);
    AVAHI_CHECK_VALIDITY_SET_RET_GOTO_FAIL(s, !host || avahi_is_valid_fqdn(host), AVAHI_ERR_INVALID_HOST_NAME);

    if (!domain)
        domain = s->domain_name;

    if (!host)
        host = s->host_name_fqdn;

    transport_flags_from_domain(s, &flags, domain);
    AVAHI_CHECK_VALIDITY_SET_RET_GOTO_FAIL(s, flags & AVAHI_PUBLISH_USE_MULTICAST, AVAHI_ERR_NOT_SUPPORTED);
    
    if (!(h = avahi_normalize_name_strdup(host))) {
        ret = avahi_server_set_errno(s, AVAHI_ERR_NO_MEMORY);
        goto fail;
    }

    if ((ret = avahi_service_name_join(svc_name, sizeof(svc_name), name, type, domain)) < 0 ||
        (ret = avahi_service_name_join(ptr_name, sizeof(ptr_name), NULL, type, domain)) < 0 ||
        (ret = avahi_service_name_join(enum_ptr, sizeof(enum_ptr), NULL, "_services._dns-sd._udp", domain)) < 0) {
        avahi_server_set_errno(s, ret);
        goto fail;
    }

    /* Add service enumeration PTR record */
    
    if (!(ptr_entry = server_add_ptr_internal(s, g, interface, protocol, 0, AVAHI_DEFAULT_TTL, ptr_name, svc_name))) {
        ret = avahi_server_errno(s);
        goto fail;
    }

    /* Add SRV record */
    
    if (!(r = avahi_record_new_full(svc_name, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_SRV, AVAHI_DEFAULT_TTL_HOST_NAME))) {
        ret = avahi_server_set_errno(s, AVAHI_ERR_NO_MEMORY);
        goto fail;
    }
    
    r->data.srv.priority = 0;
    r->data.srv.weight = 0;
    r->data.srv.port = port;
    r->data.srv.name = h;
    h = NULL;
    srv_entry = server_add_internal(s, g, interface, protocol, AVAHI_PUBLISH_UNIQUE, r);
    avahi_record_unref(r);

    if (!srv_entry) {
        ret = avahi_server_errno(s);
        goto fail;
    }

    /* Add TXT record */

    if (!(flags & AVAHI_PUBLISH_NO_COOKIE))
        strlst = add_magic_cookie(s, strlst);
    
    txt_entry = server_add_txt_strlst_nocopy(s, g, interface, protocol, AVAHI_PUBLISH_UNIQUE, AVAHI_DEFAULT_TTL, svc_name, strlst);
    strlst = NULL;

    if (!txt_entry) {
        ret = avahi_server_errno(s);
        goto fail;
    }

    /* Add service type enumeration record */
    
    if (!(enum_entry = server_add_ptr_internal(s, g, interface, protocol, 0, AVAHI_DEFAULT_TTL, enum_ptr, ptr_name))) {
        ret = avahi_server_errno(s);
        goto fail;
    }

fail:
    if (ret != AVAHI_OK && !(flags & AVAHI_PUBLISH_UPDATE)) {
        if (srv_entry)
            avahi_entry_free(s, srv_entry);
        if (txt_entry)
            avahi_entry_free(s, txt_entry);
        if (ptr_entry)
            avahi_entry_free(s, ptr_entry);
        if (enum_entry)
            avahi_entry_free(s, enum_entry);
    }
    
    avahi_string_list_free(strlst);
    avahi_free(h);
    
    return ret;
}
コード例 #13
0
static AvahiEntry * server_add_internal(
    AvahiServer *s,
    AvahiSEntryGroup *g,
    AvahiIfIndex interface,
    AvahiProtocol protocol,
    AvahiPublishFlags flags,
    AvahiRecord *r) {

    AvahiEntry *e;
    
    assert(s);
    assert(r);

    AVAHI_CHECK_VALIDITY_RETURN_NULL(s, s->state != AVAHI_SERVER_FAILURE && s->state != AVAHI_SERVER_INVALID, AVAHI_ERR_BAD_STATE);
    AVAHI_CHECK_VALIDITY_RETURN_NULL(s, AVAHI_IF_VALID(interface), AVAHI_ERR_INVALID_INTERFACE);
    AVAHI_CHECK_VALIDITY_RETURN_NULL(s, AVAHI_PROTO_VALID(protocol), AVAHI_ERR_INVALID_PROTOCOL);
    AVAHI_CHECK_VALIDITY_RETURN_NULL(s, AVAHI_FLAGS_VALID(
                                         flags,
                                         AVAHI_PUBLISH_NO_ANNOUNCE|
                                         AVAHI_PUBLISH_NO_PROBE|
                                         AVAHI_PUBLISH_UNIQUE|
                                         AVAHI_PUBLISH_ALLOW_MULTIPLE|
                                         AVAHI_PUBLISH_UPDATE|
                                         AVAHI_PUBLISH_USE_WIDE_AREA|
                                         AVAHI_PUBLISH_USE_MULTICAST), AVAHI_ERR_INVALID_FLAGS);
    AVAHI_CHECK_VALIDITY_RETURN_NULL(s, avahi_is_valid_domain_name(r->key->name), AVAHI_ERR_INVALID_HOST_NAME);
    AVAHI_CHECK_VALIDITY_RETURN_NULL(s, r->ttl != 0, AVAHI_ERR_INVALID_TTL);
    AVAHI_CHECK_VALIDITY_RETURN_NULL(s, !avahi_key_is_pattern(r->key), AVAHI_ERR_IS_PATTERN);
    AVAHI_CHECK_VALIDITY_RETURN_NULL(s, avahi_record_is_valid(r), AVAHI_ERR_INVALID_RECORD);
    AVAHI_CHECK_VALIDITY_RETURN_NULL(s, r->key->clazz == AVAHI_DNS_CLASS_IN, AVAHI_ERR_INVALID_DNS_CLASS);
    AVAHI_CHECK_VALIDITY_RETURN_NULL(s,
                                     (r->key->type != 0) &&
                                     (r->key->type != AVAHI_DNS_TYPE_ANY) &&
                                     (r->key->type != AVAHI_DNS_TYPE_OPT) &&
                                     (r->key->type != AVAHI_DNS_TYPE_TKEY) &&
                                     (r->key->type != AVAHI_DNS_TYPE_TSIG) &&
                                     (r->key->type != AVAHI_DNS_TYPE_IXFR) &&
                                     (r->key->type != AVAHI_DNS_TYPE_AXFR), AVAHI_ERR_INVALID_DNS_TYPE);

    transport_flags_from_domain(s, &flags, r->key->name);
    AVAHI_CHECK_VALIDITY_RETURN_NULL(s, flags & AVAHI_PUBLISH_USE_MULTICAST, AVAHI_ERR_NOT_SUPPORTED);
    AVAHI_CHECK_VALIDITY_RETURN_NULL(s, !s->config.disable_publishing, AVAHI_ERR_NOT_PERMITTED);
    AVAHI_CHECK_VALIDITY_RETURN_NULL(s,
                                     !g ||
                                     (g->state != AVAHI_ENTRY_GROUP_ESTABLISHED && g->state != AVAHI_ENTRY_GROUP_REGISTERING) ||
                                     (flags & AVAHI_PUBLISH_UPDATE), AVAHI_ERR_BAD_STATE);
    
    if (flags & AVAHI_PUBLISH_UPDATE) {
        AvahiRecord *old_record;
        int is_first = 1;
        
        /* Update and existing record */

        /* Find the first matching entry */
        for (e = avahi_hashmap_lookup(s->entries_by_key, r->key); e; e = e->by_key_next) {
            if (!e->dead && e->group == g && e->interface == interface && e->protocol == protocol)
                break;

            is_first = 0;
        }

        /* Hmm, nothing found? */
        if (!e) {
            avahi_server_set_errno(s, AVAHI_ERR_NOT_FOUND);
            return NULL;
        }

        /* Update the entry */
        old_record = e->record;
        e->record = avahi_record_ref(r);
        e->flags = flags;

        /* Announce our changes when needed */
        if (!avahi_record_equal_no_ttl(old_record, r) && (!g || g->state != AVAHI_ENTRY_GROUP_UNCOMMITED)) {

            /* Remove the old entry from all caches, if needed */
            if (!(e->flags & AVAHI_PUBLISH_UNIQUE))
                avahi_goodbye_entry(s, e, 1, 0);

            /* Reannounce our updated entry */
            avahi_reannounce_entry(s, e);
        }

        /* If we were the first entry in the list, we need to update the key */
        if (is_first)
            avahi_hashmap_replace(s->entries_by_key, e->record->key, e);
        
        avahi_record_unref(old_record);

    } else {
        AvahiEntry *t;

        /* Add a new record */
    
        if (check_record_conflict(s, interface, protocol, r, flags) < 0) {
            avahi_server_set_errno(s, AVAHI_ERR_COLLISION);
            return NULL;
        }

        if (!(e = avahi_new(AvahiEntry, 1))) {
            avahi_server_set_errno(s, AVAHI_ERR_NO_MEMORY);
            return NULL;
        }
        
        e->server = s;
        e->record = avahi_record_ref(r);
        e->group = g;
        e->interface = interface;
        e->protocol = protocol;
        e->flags = flags;
        e->dead = 0;
        
        AVAHI_LLIST_HEAD_INIT(AvahiAnnouncer, e->announcers);
        
        AVAHI_LLIST_PREPEND(AvahiEntry, entries, s->entries, e);
        
        /* Insert into hash table indexed by name */
        t = avahi_hashmap_lookup(s->entries_by_key, e->record->key);
        AVAHI_LLIST_PREPEND(AvahiEntry, by_key, t, e);
        avahi_hashmap_replace(s->entries_by_key, e->record->key, t);
        
        /* Insert into group list */
        if (g)
            AVAHI_LLIST_PREPEND(AvahiEntry, by_group, g->entries, e); 
        
        avahi_announce_entry(s, e);
    }

    return e;
}