mirror of https://github.com/getdnsapi/getdns.git
Commit addition of transport list to the API.
- set and get functions are added. - Existing transport functions retained for backwards compatibility. - Basic combinations work as before, but underlying functional changes and cleanup are not complete yet... - Context level options for timeouts and max_transactions_per_tcp_connection coming soon...
This commit is contained in:
Sara Dickinson
parent
d5f70ab904
commit
8dd8d90e74
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@ -1,5 +1,8 @@
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* 2015-06-??: Version 0.?.?
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* Unit test for spurious execute bits. Thanks Paul Wouters.
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* Added new transport list options in API. The option is now an ordered list of
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GETDNS_TRANSPORT_UDP, GETDNS_TRANSPORT_TCP, GETDNS_TRANSPORT_TLS,
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GETDNS_TRANSPORT_STARTTLS.
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* 2015-05-21: Version 0.2.0
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* Fix libversion numbering: Thanks Daniel Kahn Gillmor
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@ -2198,6 +2198,20 @@ The value is <span class=default>
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<code>GETDNS_TRANSPORT_TLS_ONLY_KEEP_CONNECTIONS_OPEN></code>, or
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<code>GETDNS_TRANSPORT_TLS_FIRST_AND_FALL_BACK_TO_TCP_KEEP_CONNECTIONS_OPEN></code>
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<div class=forh>
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getdns_return_t
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getdns_context_set_dns_transport_list(
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size_t transport_list,
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getdns_transport_list_t *transports
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);</div>
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<p class=cont>The <code>transports</code> array contains an ordered list
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of transports that will be used for DNS lookups. The
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values are <span class=default>
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<code>GETDNS_TRANSPORT_UDP</code></span>,
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<code>GETDNS_TRANSPORT_TCP</code>,
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<code>GETDNS_TRANSPORT_TLS></code>, or
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<code>GETDNS_TRANSPORT_STARTTLS></code>
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<div class=forh>
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getdns_return_t
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getdns_context_set_limit_outstanding_queries(
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@ -79,6 +79,11 @@ static struct const_info consts_info[] = {
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{ 1100, "GETDNS_BAD_DNS_CNAME_IN_TARGET", GETDNS_BAD_DNS_CNAME_IN_TARGET_TEXT },
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{ 1101, "GETDNS_BAD_DNS_ALL_NUMERIC_LABEL", GETDNS_BAD_DNS_ALL_NUMERIC_LABEL_TEXT },
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{ 1102, "GETDNS_BAD_DNS_CNAME_RETURNED_FOR_OTHER_TYPE", GETDNS_BAD_DNS_CNAME_RETURNED_FOR_OTHER_TYPE_TEXT },
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{ 1200, "GETDNS_TRANSPORT_UDP", GETDNS_TRANSPORT_UDP_TEXT },
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{ 1201, "GETDNS_TRANSPORT_TCP", GETDNS_TRANSPORT_TCP_TEXT },
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{ 1202, "GETDNS_TRANSPORT_TLS", GETDNS_TRANSPORT_TLS_TEXT },
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{ 1203, "GETDNS_TRANSPORT_STARTTLS", GETDNS_TRANSPORT_STARTTLS_TEXT },
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};
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static int const_info_cmp(const void *a, const void *b)
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277
src/context.c
277
src/context.c
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@ -102,7 +102,7 @@ static void cancel_outstanding_requests(struct getdns_context*, int);
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static getdns_return_t rebuild_ub_ctx(struct getdns_context* context);
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static void set_ub_string_opt(struct getdns_context *, char *, char *);
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static void set_ub_number_opt(struct getdns_context *, char *, uint16_t);
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static getdns_return_t set_ub_dns_transport(struct getdns_context*, getdns_transport_t);
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static getdns_return_t set_ub_dns_transport(struct getdns_context*);
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static void set_ub_limit_outstanding_queries(struct getdns_context*,
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uint16_t);
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static void set_ub_dnssec_allowed_skew(struct getdns_context*, uint32_t);
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@ -139,6 +139,44 @@ create_default_namespaces(struct getdns_context *context)
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return GETDNS_RETURN_GOOD;
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}
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static getdns_transport_list_t *
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get_dns_transport_list(getdns_context *context, int *count)
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{
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if (context == NULL)
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return NULL;
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/* Count how many we have*/
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for (*count = 0; *count < GETDNS_BASE_TRANSPORT_MAX; (*count)++) {
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if (context->dns_base_transports[*count] == GETDNS_BASE_TRANSPORT_NONE)
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break;
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}
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// use normal malloc here so users can do normal free
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getdns_transport_list_t * transports = malloc(*count * sizeof(getdns_transport_list_t));
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if(transports == NULL)
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return NULL;
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for (int i = 0; i < (int)*count; i++) {
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switch(context->dns_base_transports[i]) {
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case GETDNS_BASE_TRANSPORT_UDP:
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transports[i] = GETDNS_TRANSPORT_UDP;
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break;
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case GETDNS_BASE_TRANSPORT_TCP:
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transports[i] = GETDNS_TRANSPORT_TCP;
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break;
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case GETDNS_BASE_TRANSPORT_TLS:
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transports[i] = GETDNS_TRANSPORT_TLS;
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break;
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case GETDNS_BASE_TRANSPORT_STARTTLS:
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transports[i] = GETDNS_TRANSPORT_STARTTLS;
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break;
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default:
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break;
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}
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}
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return transports;
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}
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static inline void canonicalize_dname(uint8_t *dname)
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{
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uint8_t *next_label;
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@ -834,8 +872,8 @@ getdns_context_create_with_extended_memory_functions(
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result->dnssec_allowed_skew = 0;
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result->edns_maximum_udp_payload_size = -1;
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result->dns_transport = GETDNS_TRANSPORT_UDP_FIRST_AND_FALL_BACK_TO_TCP;
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priv_set_base_dns_transports(result->dns_base_transports, result->dns_transport);
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result->dns_base_transports[0] = GETDNS_BASE_TRANSPORT_UDP;
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result->dns_base_transports[1] = GETDNS_BASE_TRANSPORT_TCP;
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result->limit_outstanding_queries = 0;
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result->has_ta = priv_getdns_parse_ta_file(NULL, NULL);
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result->return_dnssec_status = GETDNS_EXTENSION_FALSE;
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@ -1065,8 +1103,7 @@ rebuild_ub_ctx(struct getdns_context* context) {
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context->dnssec_allowed_skew);
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set_ub_edns_maximum_udp_payload_size(context,
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context->edns_maximum_udp_payload_size);
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set_ub_dns_transport(context,
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context->dns_transport);
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set_ub_dns_transport(context);
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/* Set default trust anchor */
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if (context->has_ta) {
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@ -1159,71 +1196,67 @@ getdns_context_set_namespaces(struct getdns_context *context,
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return GETDNS_RETURN_GOOD;
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} /* getdns_context_set_namespaces */
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/* TODO[TLS]: Modify further when API changed.*/
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getdns_return_t
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priv_set_base_dns_transports(getdns_base_transport_t *dns_base_transports,
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getdns_transport_t value)
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static getdns_return_t
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getdns_set_base_dns_transports(struct getdns_context *context,
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size_t transport_count, getdns_transport_list_t *transports)
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{
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RETURN_IF_NULL(context, GETDNS_RETURN_INVALID_PARAMETER);
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for (int i = 0; i < GETDNS_BASE_TRANSPORT_MAX; i++)
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dns_base_transports[i] = GETDNS_BASE_TRANSPORT_NONE;
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switch (value) {
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case GETDNS_TRANSPORT_UDP_FIRST_AND_FALL_BACK_TO_TCP:
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dns_base_transports[0] = GETDNS_BASE_TRANSPORT_UDP;
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dns_base_transports[1] = GETDNS_BASE_TRANSPORT_TCP_SINGLE;
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break;
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case GETDNS_TRANSPORT_UDP_ONLY:
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dns_base_transports[0] = GETDNS_BASE_TRANSPORT_UDP;
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break;
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case GETDNS_TRANSPORT_TCP_ONLY:
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dns_base_transports[0] = GETDNS_BASE_TRANSPORT_TCP_SINGLE;
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break;
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case GETDNS_TRANSPORT_TCP_ONLY_KEEP_CONNECTIONS_OPEN:
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dns_base_transports[0] = GETDNS_BASE_TRANSPORT_TCP;
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break;
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case GETDNS_TRANSPORT_TLS_ONLY_KEEP_CONNECTIONS_OPEN:
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dns_base_transports[0] = GETDNS_BASE_TRANSPORT_TLS;
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break;
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case GETDNS_TRANSPORT_TLS_FIRST_AND_FALL_BACK_TO_TCP_KEEP_CONNECTIONS_OPEN:
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dns_base_transports[0] = GETDNS_BASE_TRANSPORT_TLS;
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dns_base_transports[1] = GETDNS_BASE_TRANSPORT_TCP;
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break;
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case GETDNS_TRANSPORT_STARTTLS_FIRST_AND_FALL_BACK_TO_TCP_KEEP_CONNECTIONS_OPEN:
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dns_base_transports[0] = GETDNS_BASE_TRANSPORT_STARTTLS;
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dns_base_transports[1] = GETDNS_BASE_TRANSPORT_TCP;
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break;
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context->dns_base_transports[i] = GETDNS_BASE_TRANSPORT_NONE;
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if ((int)transport_count == 0 || transports == NULL ||
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(int)transport_count > GETDNS_BASE_TRANSPORT_MAX) {
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return GETDNS_RETURN_CONTEXT_UPDATE_FAIL;
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}
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for (size_t j = 0; j < transport_count; j++) {
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switch(transports[j]) {
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case GETDNS_TRANSPORT_UDP:
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context->dns_base_transports[j] = GETDNS_BASE_TRANSPORT_UDP;
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break;
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case GETDNS_TRANSPORT_TCP:
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context->dns_base_transports[j] = GETDNS_BASE_TRANSPORT_TCP;
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break;
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case GETDNS_TRANSPORT_TLS:
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context->dns_base_transports[j] = GETDNS_BASE_TRANSPORT_TLS;
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break;
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case GETDNS_TRANSPORT_STARTTLS:
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context->dns_base_transports[j] = GETDNS_BASE_TRANSPORT_STARTTLS;
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break;
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default:
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return GETDNS_RETURN_CONTEXT_UPDATE_FAIL;
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}
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}
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return GETDNS_RETURN_GOOD;
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}
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static getdns_return_t
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set_ub_dns_transport(struct getdns_context* context,
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getdns_transport_t value) {
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switch (value) {
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case GETDNS_TRANSPORT_UDP_FIRST_AND_FALL_BACK_TO_TCP:
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set_ub_dns_transport(struct getdns_context* context) {
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/* These mappings are not exact because Unbound is configured differently,
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so just map as close as possible from the first 1 or 2 transports. */
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switch (context->dns_base_transports[0]) {
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case GETDNS_BASE_TRANSPORT_UDP:
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set_ub_string_opt(context, "do-udp:", "yes");
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if (context->dns_base_transports[1] == GETDNS_BASE_TRANSPORT_TCP)
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set_ub_string_opt(context, "do-tcp:", "yes");
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break;
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case GETDNS_TRANSPORT_UDP_ONLY:
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set_ub_string_opt(context, "do-udp:", "yes");
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else
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set_ub_string_opt(context, "do-tcp:", "no");
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break;
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case GETDNS_TRANSPORT_TCP_ONLY:
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/* Note: no pipelining available directly in unbound.*/
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case GETDNS_TRANSPORT_TCP_ONLY_KEEP_CONNECTIONS_OPEN:
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case GETDNS_BASE_TRANSPORT_TLS:
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/* Note: If TLS is used in recursive mode this will try TLS on port
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* 53... So this is prohibited when preparing for resolution.*/
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if (context->dns_base_transports[1] == GETDNS_BASE_TRANSPORT_NONE) {
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set_ub_string_opt(context, "ssl-upstream:", "yes");
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set_ub_string_opt(context, "do-udp:", "no");
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set_ub_string_opt(context, "do-tcp:", "yes");
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break;
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case GETDNS_TRANSPORT_TLS_ONLY_KEEP_CONNECTIONS_OPEN:
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/* Note: If TLS is used in recursive mode this will try TLS on port
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* 53... So this is prohibited when preparing for resolution.*/
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set_ub_string_opt(context, "ssl-upstream:", "yes");
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}
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if (context->dns_base_transports[1] != GETDNS_BASE_TRANSPORT_TCP)
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break;
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/* Fallthrough */
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case GETDNS_TRANSPORT_TLS_FIRST_AND_FALL_BACK_TO_TCP_KEEP_CONNECTIONS_OPEN:
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case GETDNS_TRANSPORT_STARTTLS_FIRST_AND_FALL_BACK_TO_TCP_KEEP_CONNECTIONS_OPEN:
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/* Note: no fallback to TCP available directly in unbound, so we just
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case GETDNS_BASE_TRANSPORT_STARTTLS:
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case GETDNS_BASE_TRANSPORT_TCP:
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/* Note: no STARTTLS or fallback to TCP available directly in unbound, so we just
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* use TCP for now to make sure the messages are sent. */
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set_ub_string_opt(context, "do-udp:", "no");
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set_ub_string_opt(context, "do-tcp:", "yes");
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@ -1242,25 +1275,71 @@ getdns_return_t
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getdns_context_set_dns_transport(struct getdns_context *context,
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getdns_transport_t value)
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{
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/* TODO[TLS]: Modify further when API changed.*/
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RETURN_IF_NULL(context, GETDNS_RETURN_INVALID_PARAMETER);
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for (int i = 0; i < GETDNS_BASE_TRANSPORT_MAX; i++)
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context->dns_base_transports[i] = GETDNS_BASE_TRANSPORT_NONE;
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switch (value) {
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case GETDNS_TRANSPORT_UDP_FIRST_AND_FALL_BACK_TO_TCP:
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context->dns_base_transports[0] = GETDNS_BASE_TRANSPORT_UDP;
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context->dns_base_transports[1] = GETDNS_BASE_TRANSPORT_TCP;
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break;
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case GETDNS_TRANSPORT_UDP_ONLY:
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context->dns_base_transports[0] = GETDNS_BASE_TRANSPORT_UDP;
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break;
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case GETDNS_TRANSPORT_TCP_ONLY:
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case GETDNS_TRANSPORT_TCP_ONLY_KEEP_CONNECTIONS_OPEN:
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context->dns_base_transports[0] = GETDNS_BASE_TRANSPORT_TCP;
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break;
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case GETDNS_TRANSPORT_TLS_ONLY_KEEP_CONNECTIONS_OPEN:
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context->dns_base_transports[0] = GETDNS_BASE_TRANSPORT_TLS;
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break;
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case GETDNS_TRANSPORT_TLS_FIRST_AND_FALL_BACK_TO_TCP_KEEP_CONNECTIONS_OPEN:
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context->dns_base_transports[0] = GETDNS_BASE_TRANSPORT_TLS;
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context->dns_base_transports[1] = GETDNS_BASE_TRANSPORT_TCP;
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break;
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case GETDNS_TRANSPORT_STARTTLS_FIRST_AND_FALL_BACK_TO_TCP_KEEP_CONNECTIONS_OPEN:
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context->dns_base_transports[0] = GETDNS_BASE_TRANSPORT_STARTTLS;
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context->dns_base_transports[1] = GETDNS_BASE_TRANSPORT_TCP;
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break;
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default:
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return GETDNS_RETURN_CONTEXT_UPDATE_FAIL;
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}
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/* Note that the call below does not have any effect in unbound after the
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* ctx is finalised so for recursive mode or stub + dnssec only the first
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* transport specified on the first query is used.
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* However the method returns success as otherwise the transport could not
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* be reset for stub mode.
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* Also, not all transport options supported in libunbound yet */
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if (set_ub_dns_transport(context, value) != GETDNS_RETURN_GOOD) {
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if (set_ub_dns_transport(context) != GETDNS_RETURN_GOOD) {
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return GETDNS_RETURN_CONTEXT_UPDATE_FAIL;
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}
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if (value != context->dns_transport) {
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/*TODO[TLS]: remove this line when API updated*/
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context->dns_transport = value;
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if (priv_set_base_dns_transports(context->dns_base_transports, value) != GETDNS_RETURN_GOOD)
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return GETDNS_RETURN_CONTEXT_UPDATE_FAIL;
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dispatch_updated(context, GETDNS_CONTEXT_CODE_DNS_TRANSPORT);
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return GETDNS_RETURN_GOOD;
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}
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/*
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* getdns_context_set_dns_transport
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*
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*/
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getdns_return_t
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getdns_context_set_dns_transport_list(getdns_context *context,
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size_t transport_count, getdns_transport_list_t *transports)
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{
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RETURN_IF_NULL(context, GETDNS_RETURN_INVALID_PARAMETER);
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if (getdns_set_base_dns_transports(context, transport_count, transports) != GETDNS_RETURN_GOOD)
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return GETDNS_RETURN_CONTEXT_UPDATE_FAIL;
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/* Note that the call below does not have any effect in unbound after the
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* ctx is finalised so for recursive mode or stub + dnssec only the first
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* transport specified on the first query is used.
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* However the method returns success as otherwise the transport could not
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* be reset for stub mode.
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* Also, not all transport options supported in libunbound yet */
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if (set_ub_dns_transport(context) != GETDNS_RETURN_GOOD) {
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return GETDNS_RETURN_CONTEXT_UPDATE_FAIL;
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}
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dispatch_updated(context, GETDNS_CONTEXT_CODE_DNS_TRANSPORT);
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return GETDNS_RETURN_GOOD;
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} /* getdns_context_set_dns_transport */
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@ -1568,7 +1647,7 @@ getdns_context_set_upstream_recursive_servers(struct getdns_context *context,
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if (base_transport != GETDNS_BASE_TRANSPORT_TLS)
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(void) getdns_dict_get_int(dict, "port", &port);
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else
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(void) getdns_dict_get_int(dict, "tls-port", &port);
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(void) getdns_dict_get_int(dict, "tls_port", &port);
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(void) snprintf(portstr, 1024, "%d", (int)port);
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if (getaddrinfo(addrstr, portstr, &hints, &ai))
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@ -1918,17 +1997,14 @@ getdns_context_prepare_for_resolution(struct getdns_context *context,
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/* Create client context, use TLS v1.2 only for now */
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context->tls_ctx = SSL_CTX_new(TLSv1_2_client_method());
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#endif
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/* TODO[TLS]: Check if TLS is the only option in the list*/
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// if(!context->tls_ctx && context->dns_transport ==
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// GETDNS_TRANSPORT_TLS_ONLY_KEEP_CONNECTIONS_OPEN) {
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// return GETDNS_RETURN_BAD_CONTEXT;
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// }
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if(context->tls_ctx == NULL)
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return GETDNS_RETURN_BAD_CONTEXT;
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}
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}
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/* Block use of TLS ONLY in recursive mode as it won't work */
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/* TODO[TLS]: Check if TLS is the only option in the list*/
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if (context->resolution_type == GETDNS_RESOLUTION_RECURSING &&
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context->dns_transport == GETDNS_TRANSPORT_TLS_ONLY_KEEP_CONNECTIONS_OPEN)
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context->dns_base_transports[0] == GETDNS_BASE_TRANSPORT_TLS &&
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context->dns_base_transports[1] == GETDNS_BASE_TRANSPORT_NONE)
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return GETDNS_RETURN_BAD_CONTEXT;
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if (context->resolution_type_set == context->resolution_type)
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|
|
@ -2192,8 +2268,7 @@ priv_get_context_settings(getdns_context* context) {
|
|||
return NULL;
|
||||
}
|
||||
/* int fields */
|
||||
r = getdns_dict_set_int(result, "dns_transport", context->dns_transport);
|
||||
r |= getdns_dict_set_int(result, "timeout", context->timeout);
|
||||
r = getdns_dict_set_int(result, "timeout", context->timeout);
|
||||
r |= getdns_dict_set_int(result, "limit_outstanding_queries", context->limit_outstanding_queries);
|
||||
r |= getdns_dict_set_int(result, "dnssec_allowed_skew", context->dnssec_allowed_skew);
|
||||
r |= getdns_dict_set_int(result, "follow_redirects", context->follow_redirects);
|
||||
|
|
@ -2224,6 +2299,18 @@ priv_get_context_settings(getdns_context* context) {
|
|||
upstreams);
|
||||
getdns_list_destroy(upstreams);
|
||||
}
|
||||
/* create a transport list */
|
||||
getdns_list* transports = getdns_list_create_with_context(context);
|
||||
if (transports) {
|
||||
int transport_count;
|
||||
getdns_transport_list_t *transport_list =
|
||||
get_dns_transport_list(context, &transport_count);
|
||||
for (int i = 0; i < transport_count; i++) {
|
||||
r |= getdns_list_set_int(transports, i, transport_list[i]);
|
||||
}
|
||||
r |= getdns_dict_set_list(result, "dns_transport_list", transports);
|
||||
free(transport_list);
|
||||
}
|
||||
if (context->namespace_count > 0) {
|
||||
/* create a namespace list */
|
||||
size_t i;
|
||||
|
|
@ -2416,10 +2503,60 @@ getdns_context_get_dns_transport(getdns_context *context,
|
|||
getdns_transport_t* value) {
|
||||
RETURN_IF_NULL(context, GETDNS_RETURN_INVALID_PARAMETER);
|
||||
RETURN_IF_NULL(value, GETDNS_RETURN_INVALID_PARAMETER);
|
||||
*value = context->dns_transport;
|
||||
int count;
|
||||
getdns_transport_list_t *transport_list =
|
||||
get_dns_transport_list(context, &count);
|
||||
if (!count)
|
||||
return GETDNS_RETURN_WRONG_TYPE_REQUESTED;
|
||||
|
||||
/* Best effort mapping for backwards compatibility*/
|
||||
if (transport_list[0] == GETDNS_TRANSPORT_UDP) {
|
||||
if (count == 1)
|
||||
*value = GETDNS_TRANSPORT_UDP_ONLY;
|
||||
else if (count == 2 && transport_list[1] == GETDNS_TRANSPORT_TCP)
|
||||
*value = GETDNS_TRANSPORT_UDP_FIRST_AND_FALL_BACK_TO_TCP;
|
||||
else
|
||||
return GETDNS_RETURN_WRONG_TYPE_REQUESTED;
|
||||
}
|
||||
if (transport_list[0] == GETDNS_TRANSPORT_TCP) {
|
||||
if (count == 1)
|
||||
*value = GETDNS_TRANSPORT_TCP_ONLY_KEEP_CONNECTIONS_OPEN;
|
||||
}
|
||||
if (transport_list[0] == GETDNS_TRANSPORT_TLS) {
|
||||
if (count == 1)
|
||||
*value = GETDNS_TRANSPORT_TLS_ONLY_KEEP_CONNECTIONS_OPEN;
|
||||
else if (count == 2 && transport_list[1] == GETDNS_TRANSPORT_TCP)
|
||||
*value = GETDNS_TRANSPORT_TLS_FIRST_AND_FALL_BACK_TO_TCP_KEEP_CONNECTIONS_OPEN;
|
||||
else
|
||||
return GETDNS_RETURN_WRONG_TYPE_REQUESTED;
|
||||
}
|
||||
if (transport_list[0] == GETDNS_TRANSPORT_STARTTLS) {
|
||||
if (count == 2 && transport_list[1] == GETDNS_TRANSPORT_TCP)
|
||||
*value = GETDNS_TRANSPORT_STARTTLS_FIRST_AND_FALL_BACK_TO_TCP_KEEP_CONNECTIONS_OPEN;
|
||||
else
|
||||
return GETDNS_RETURN_WRONG_TYPE_REQUESTED;
|
||||
}
|
||||
return GETDNS_RETURN_GOOD;
|
||||
}
|
||||
|
||||
getdns_return_t
|
||||
getdns_context_get_dns_transport_list(getdns_context *context,
|
||||
size_t* transport_count, getdns_transport_list_t **transports) {
|
||||
RETURN_IF_NULL(context, GETDNS_RETURN_INVALID_PARAMETER);
|
||||
RETURN_IF_NULL(transport_count, GETDNS_RETURN_INVALID_PARAMETER);
|
||||
RETURN_IF_NULL(transports, GETDNS_RETURN_INVALID_PARAMETER);
|
||||
|
||||
int count;
|
||||
getdns_transport_list_t *transport_list =
|
||||
get_dns_transport_list(context, &count);
|
||||
*transport_count = count;
|
||||
if (!transport_count) {
|
||||
*transports = NULL;
|
||||
return GETDNS_RETURN_GOOD;
|
||||
}
|
||||
*transports = transport_list;
|
||||
return GETDNS_RETURN_GOOD;
|
||||
}
|
||||
|
||||
getdns_return_t
|
||||
getdns_context_get_limit_outstanding_queries(getdns_context *context,
|
||||
|
|
|
|||
|
|
@ -137,7 +137,6 @@ struct getdns_context {
|
|||
struct getdns_list *suffix;
|
||||
struct getdns_list *dnssec_trust_anchors;
|
||||
getdns_upstreams *upstreams;
|
||||
getdns_transport_t dns_transport;
|
||||
getdns_base_transport_t dns_base_transports[GETDNS_BASE_TRANSPORT_MAX];
|
||||
uint16_t limit_outstanding_queries;
|
||||
uint32_t dnssec_allowed_skew;
|
||||
|
|
@ -234,9 +233,6 @@ int filechg_check(struct getdns_context *context, struct filechg *fchg);
|
|||
|
||||
void priv_getdns_context_ub_read_cb(void *userarg);
|
||||
|
||||
getdns_return_t priv_set_base_dns_transports(getdns_base_transport_t *,
|
||||
getdns_transport_t);
|
||||
|
||||
void priv_getdns_upstreams_dereference(getdns_upstreams *upstreams);
|
||||
|
||||
#endif /* _GETDNS_CONTEXT_H_ */
|
||||
|
|
|
|||
10
src/dict.c
10
src/dict.c
|
|
@ -608,14 +608,14 @@ static const char *unknown_str_l[] = {" <unknown>", " null", "null"};
|
|||
* @param buf buffer to write to
|
||||
* @param indent number of spaces to append after newline
|
||||
* @param list the to list print
|
||||
* @param for_namespaces The list is a list of namespace literals.
|
||||
* @param for_literals The list is a list of literals.
|
||||
* Show the literal instead of the value.
|
||||
* @return on success the number of written characters
|
||||
* if an output error is encountered, a negative value
|
||||
*/
|
||||
static int
|
||||
getdns_pp_list(gldns_buffer *buf, size_t indent, const getdns_list *list,
|
||||
int for_namespaces, int json)
|
||||
int for_literals, int json)
|
||||
{
|
||||
size_t i, length, p = gldns_buffer_position(buf);
|
||||
getdns_data_type dtype;
|
||||
|
|
@ -651,7 +651,7 @@ getdns_pp_list(gldns_buffer *buf, size_t indent, const getdns_list *list,
|
|||
|
||||
if (getdns_list_get_int(list, i, &int_item))
|
||||
return -1;
|
||||
if (!json && for_namespaces &&
|
||||
if (!json && for_literals &&
|
||||
(strval =
|
||||
priv_getdns_get_const_info(int_item)->name)) {
|
||||
if (gldns_buffer_printf(buf, "%s", strval) < 0)
|
||||
|
|
@ -829,7 +829,6 @@ getdns_pp_dict(gldns_buffer * buf, size_t indent,
|
|||
strcmp(item->node.key, "dnssec_status") == 0 ||
|
||||
strcmp(item->node.key, "status") == 0 ||
|
||||
strcmp(item->node.key, "append_name") == 0 ||
|
||||
strcmp(item->node.key, "dns_transport") == 0 ||
|
||||
strcmp(item->node.key, "follow_redirects") == 0 ||
|
||||
strcmp(item->node.key, "resolution_type") == 0) &&
|
||||
(strval =
|
||||
|
|
@ -893,7 +892,8 @@ getdns_pp_dict(gldns_buffer * buf, size_t indent,
|
|||
getdns_indent(indent)) < 0)
|
||||
return -1;
|
||||
if (getdns_pp_list(buf, indent, item->data.list,
|
||||
(strcmp(item->node.key, "namespaces") == 0),
|
||||
(strcmp(item->node.key, "namespaces") == 0 ||
|
||||
strcmp(item->node.key, "dns_transport_list") == 0),
|
||||
json) < 0)
|
||||
return -1;
|
||||
break;
|
||||
|
|
|
|||
|
|
@ -184,6 +184,26 @@ typedef enum getdns_transport_t {
|
|||
*/
|
||||
|
||||
|
||||
/* Base transports for use in transport list */
|
||||
typedef enum getdns_transport_list_t {
|
||||
GETDNS_TRANSPORT_UDP = 1200,
|
||||
GETDNS_TRANSPORT_TCP = 1201,
|
||||
GETDNS_TRANSPORT_TLS = 1202,
|
||||
GETDNS_TRANSPORT_STARTTLS = 1203
|
||||
} getdns_transport_list_t;
|
||||
|
||||
/**
|
||||
* \defgroup Base transport texts
|
||||
* @{
|
||||
*/
|
||||
#define GETDNS_TRANSPORT_UDP_TEXT "See getdns_context_set_dns_transport()"
|
||||
#define GETDNS_TRANSPORT_TCP_TEXT "See getdns_context_set_dns_transport()"
|
||||
#define GETDNS_TRANSPORT_TLS_TEXT "See getdns_context_set_dns_transport()"
|
||||
#define GETDNS_TRANSPORT_STARTTLS_TEXT "See getdns_context_set_dns_transport()"
|
||||
/** @}
|
||||
*/
|
||||
|
||||
|
||||
/* Suffix appending methods */
|
||||
typedef enum getdns_append_name_t {
|
||||
GETDNS_APPEND_NAME_ALWAYS = 550,
|
||||
|
|
@ -942,6 +962,10 @@ getdns_return_t
|
|||
getdns_context_set_dns_transport(getdns_context *context,
|
||||
getdns_transport_t value);
|
||||
|
||||
getdns_return_t
|
||||
getdns_context_set_dns_transport_list(getdns_context *context,
|
||||
size_t transport_count, getdns_transport_list_t *transports);
|
||||
|
||||
getdns_return_t
|
||||
getdns_context_set_limit_outstanding_queries(getdns_context *context,
|
||||
uint16_t limit);
|
||||
|
|
|
|||
|
|
@ -139,6 +139,10 @@ getdns_return_t
|
|||
getdns_context_get_dns_transport(getdns_context *context,
|
||||
getdns_transport_t* value);
|
||||
|
||||
getdns_return_t
|
||||
getdns_context_get_dns_transport_list(getdns_context *context,
|
||||
size_t* transport_count, getdns_transport_list_t **transports);
|
||||
|
||||
getdns_return_t
|
||||
getdns_context_get_limit_outstanding_queries(getdns_context *context,
|
||||
uint16_t* limit);
|
||||
|
|
|
|||
|
|
@ -12,6 +12,7 @@ getdns_context_get_dns_root_servers
|
|||
getdns_context_get_dnssec_allowed_skew
|
||||
getdns_context_get_dnssec_trust_anchors
|
||||
getdns_context_get_dns_transport
|
||||
getdns_context_get_dns_transport_list
|
||||
getdns_context_get_edns_do_bit
|
||||
getdns_context_get_edns_extended_rcode
|
||||
getdns_context_get_edns_maximum_udp_payload_size
|
||||
|
|
@ -33,6 +34,7 @@ getdns_context_set_dns_root_servers
|
|||
getdns_context_set_dnssec_allowed_skew
|
||||
getdns_context_set_dnssec_trust_anchors
|
||||
getdns_context_set_dns_transport
|
||||
getdns_context_set_dns_transport_list
|
||||
getdns_context_set_edns_do_bit
|
||||
getdns_context_set_edns_extended_rcode
|
||||
getdns_context_set_edns_maximum_udp_payload_size
|
||||
|
|
|
|||
|
|
@ -530,6 +530,7 @@ stub_timeout_cb(void *userarg)
|
|||
netreq->upstream->tls_hs_state = GETDNS_HS_FAILED;
|
||||
stub_next_upstream(netreq);
|
||||
stub_cleanup(netreq);
|
||||
return;
|
||||
}
|
||||
|
||||
stub_next_upstream(netreq);
|
||||
|
|
@ -1049,10 +1050,11 @@ stub_udp_read_cb(void *userarg)
|
|||
return; /* Client cookie didn't match? */
|
||||
|
||||
close(netreq->fd);
|
||||
/*TODO[TLS]: Switch this to use the transport fallback list*/
|
||||
/* TODO: check not past end of transports*/
|
||||
getdns_base_transport_t next_transport =
|
||||
netreq->dns_base_transports[netreq->transport + 1];
|
||||
if (GLDNS_TC_WIRE(netreq->response) &&
|
||||
dnsreq->context->dns_transport ==
|
||||
GETDNS_TRANSPORT_UDP_FIRST_AND_FALL_BACK_TO_TCP) {
|
||||
next_transport == GETDNS_BASE_TRANSPORT_TCP) {
|
||||
|
||||
if ((netreq->fd = socket(
|
||||
upstream->addr.ss_family, SOCK_STREAM, IPPROTO_TCP)) == -1)
|
||||
|
|
|
|||
|
|
@ -32,6 +32,7 @@
|
|||
#include <dirent.h>
|
||||
#include <getdns/getdns.h>
|
||||
#include <getdns/getdns_extra.h>
|
||||
#include <types-internal.h>
|
||||
|
||||
static int quiet = 0;
|
||||
static int batch_mode = 0;
|
||||
|
|
@ -92,13 +93,40 @@ ipaddr_dict(getdns_context *context, char *ipstr)
|
|||
if (*portstr)
|
||||
getdns_dict_set_int(r, "port", (int32_t)atoi(portstr));
|
||||
if (*tls_portstr)
|
||||
getdns_dict_set_int(r, "tls-port", (int32_t)atoi(tls_portstr));
|
||||
getdns_dict_set_int(r, "tls_port", (int32_t)atoi(tls_portstr));
|
||||
if (*scope_id_str)
|
||||
getdns_dict_util_set_string(r, "scope_id", scope_id_str);
|
||||
|
||||
return r;
|
||||
}
|
||||
|
||||
static getdns_return_t
|
||||
fill_transport_list(getdns_context *context, char *transport_list_str,
|
||||
getdns_transport_list_t *transports, size_t *transport_count)
|
||||
{
|
||||
for (size_t i = 0; i < strlen(transport_list_str); i++, (*transport_count)++) {
|
||||
switch(*(transport_list_str + i)) {
|
||||
case 'U':
|
||||
transports[i] = GETDNS_TRANSPORT_UDP;
|
||||
break;
|
||||
case 'T':
|
||||
transports[i] = GETDNS_TRANSPORT_TCP;
|
||||
break;
|
||||
case 'L':
|
||||
transports[i] = GETDNS_TRANSPORT_TLS;
|
||||
break;
|
||||
case 'S':
|
||||
transports[i] = GETDNS_TRANSPORT_STARTTLS;
|
||||
break;
|
||||
default:
|
||||
fprintf(stderr, "Unrecognised transport '%c' in string %s\n",
|
||||
*(transport_list_str + i), transport_list_str);
|
||||
return GETDNS_RETURN_GENERIC_ERROR;
|
||||
}
|
||||
}
|
||||
return GETDNS_RETURN_GOOD;
|
||||
}
|
||||
|
||||
void
|
||||
print_usage(FILE *out, const char *progname)
|
||||
{
|
||||
|
|
@ -131,6 +159,8 @@ print_usage(FILE *out, const char *progname)
|
|||
fprintf(out, "\t-R\tSet transport to STARTTLS with TCP fallback only keep connections open\n");
|
||||
fprintf(out, "\t-u\tSet transport to UDP with TCP fallback\n");
|
||||
fprintf(out, "\t-U\tSet transport to UDP only\n");
|
||||
fprintf(out, "\t-l <transports>\tSet transport list. List can contain 1 of each of the characters\n");
|
||||
fprintf(out, "\t\t\t U T L S for UDP, TCP, TLS or STARTTLS e.g 'UT' or 'LST' \n");
|
||||
fprintf(out, "\t-B\tBatch mode. Schedule all messages before processing responses.\n");
|
||||
fprintf(out, "\t-q\tQuiet mode - don't print response\n");
|
||||
}
|
||||
|
|
@ -389,6 +419,21 @@ getdns_return_t parse_args(int argc, char **argv)
|
|||
getdns_context_set_dns_transport(context,
|
||||
GETDNS_TRANSPORT_UDP_ONLY);
|
||||
break;
|
||||
case 'l':
|
||||
if (c[1] != 0 || ++i >= argc || !*argv[i]) {
|
||||
fprintf(stderr, "transport list expected "
|
||||
"after -l\n");
|
||||
return GETDNS_RETURN_GENERIC_ERROR;
|
||||
}
|
||||
size_t transport_count = 0;
|
||||
getdns_transport_list_t transports[GETDNS_BASE_TRANSPORT_MAX];
|
||||
if ((r = fill_transport_list(context, argv[i], transports, &transport_count)) ||
|
||||
(r = getdns_context_set_dns_transport_list(context,
|
||||
transport_count, transports))){
|
||||
fprintf(stderr, "Could not set transports\n");
|
||||
return r;
|
||||
}
|
||||
break;
|
||||
case 'B':
|
||||
batch_mode = 1;
|
||||
break;
|
||||
|
|
|
|||
|
|
@ -42,10 +42,12 @@
|
|||
#include <sys/time.h>
|
||||
|
||||
#define TRANSPORT_UDP "udp"
|
||||
#define TRANSPORT_UDP_TCP "udp_tcp"
|
||||
#define TRANSPORT_TCP "tcp"
|
||||
#define TRANSPORT_PIPELINE "pipeline"
|
||||
#define TRANSPORT_TLS_KEEPOPEN "tls"
|
||||
#define TRANSPORT_TLS_TCP_KEEPOPEN "dns-over-tls"
|
||||
#define TRANSPORT_STARTTLS_TCP_KEEPOPEN "starttls"
|
||||
#define RESOLUTION_STUB "stub"
|
||||
#define RESOLUTION_REC "rec"
|
||||
|
||||
|
|
@ -76,16 +78,16 @@ int
|
|||
main(int argc, char** argv)
|
||||
{
|
||||
|
||||
const char *transport = argc > 2 ? argv[2] : "udp";
|
||||
const char *transport = argc > 2 ? argv[2] : "udp_tcp";
|
||||
const char *resolution = argc > 3 ? argv[3] : "stub";
|
||||
|
||||
/* Create the DNS context for this call */
|
||||
struct getdns_context *this_context = NULL;
|
||||
getdns_return_t context_create_return =
|
||||
getdns_return_t return_value =
|
||||
getdns_context_create(&this_context, 1);
|
||||
if (context_create_return != GETDNS_RETURN_GOOD) {
|
||||
if (return_value != GETDNS_RETURN_GOOD) {
|
||||
fprintf(stderr, "Trying to create the context failed: %d",
|
||||
context_create_return);
|
||||
return_value);
|
||||
return (GETDNS_RETURN_GENERIC_ERROR);
|
||||
}
|
||||
|
||||
|
|
@ -96,16 +98,23 @@ main(int argc, char** argv)
|
|||
exit(EXIT_FAILURE);
|
||||
}
|
||||
|
||||
/* Order matters*/
|
||||
if (strncmp(transport, TRANSPORT_TCP, 3) == 0)
|
||||
getdns_context_set_dns_transport(this_context, GETDNS_TRANSPORT_TCP_ONLY);
|
||||
else if (strncmp(transport, TRANSPORT_UDP_TCP, 7) == 0)
|
||||
getdns_context_set_dns_transport(this_context, GETDNS_TRANSPORT_UDP_FIRST_AND_FALL_BACK_TO_TCP);
|
||||
else if (strncmp(transport, TRANSPORT_UDP, 3) == 0)
|
||||
getdns_context_set_dns_transport(this_context, GETDNS_TRANSPORT_UDP_ONLY);
|
||||
else if (strncmp(transport, TRANSPORT_PIPELINE, 8) == 0)
|
||||
getdns_context_set_dns_transport(this_context, GETDNS_TRANSPORT_TCP_ONLY_KEEP_CONNECTIONS_OPEN);
|
||||
else if (strncmp(transport, TRANSPORT_TLS_KEEPOPEN, 3) == 0)
|
||||
getdns_context_set_dns_transport(this_context, GETDNS_TRANSPORT_TLS_ONLY_KEEP_CONNECTIONS_OPEN);
|
||||
else if (strncmp(transport, TRANSPORT_TLS_TCP_KEEPOPEN, 12) == 0)
|
||||
getdns_context_set_dns_transport(this_context, GETDNS_TRANSPORT_TLS_FIRST_AND_FALL_BACK_TO_TCP_KEEP_CONNECTIONS_OPEN);
|
||||
else if (strncmp(transport, TRANSPORT_UDP, 3) != 0) {
|
||||
fprintf(stderr, "Invalid transport %s, must be one of udp, tcp or pipeline\n", transport);
|
||||
else if (strncmp(transport, TRANSPORT_STARTTLS_TCP_KEEPOPEN, 8) == 0)
|
||||
getdns_context_set_dns_transport(this_context, GETDNS_TRANSPORT_STARTTLS_FIRST_AND_FALL_BACK_TO_TCP_KEEP_CONNECTIONS_OPEN);
|
||||
else if (strncmp(transport, TRANSPORT_UDP_TCP, 3) != 0) {
|
||||
fprintf(stderr, "Invalid transport %s, must be one of udp, udp_tcp, tcp or pipeline\n", transport);
|
||||
exit(EXIT_FAILURE);
|
||||
}
|
||||
|
||||
|
|
@ -129,6 +138,30 @@ main(int argc, char** argv)
|
|||
else {
|
||||
getdns_context_run(this_context);
|
||||
}
|
||||
|
||||
getdns_transport_t get_transport = GETDNS_TRANSPORT_UDP_ONLY;
|
||||
return_value = getdns_context_get_dns_transport(this_context, &get_transport);
|
||||
if (return_value != GETDNS_RETURN_GOOD) {
|
||||
fprintf(stderr, "Trying to get transport type failed: %d\n",
|
||||
return_value);
|
||||
return (GETDNS_RETURN_GENERIC_ERROR);
|
||||
}
|
||||
fprintf(stderr, "Transport type is %d\n", get_transport);
|
||||
|
||||
size_t transport_count = 0;
|
||||
getdns_transport_list_t *get_transport_list;
|
||||
getdns_transport_list_t tmp[1] = {GETDNS_TRANSPORT_UDP};
|
||||
get_transport_list = tmp;
|
||||
return_value = getdns_context_get_dns_transport_list(this_context, &transport_count, &get_transport_list);
|
||||
if (return_value != GETDNS_RETURN_GOOD) {
|
||||
fprintf(stderr, "Trying to get transport type failed: %d\n",
|
||||
return_value);
|
||||
return (GETDNS_RETURN_GENERIC_ERROR);
|
||||
}
|
||||
for (size_t i = 0; i < transport_count; i++) {
|
||||
fprintf(stderr, "Transport %d is %d\n", (int)i, get_transport_list[i]);
|
||||
}
|
||||
|
||||
/* Clean up */
|
||||
getdns_context_destroy(this_context);
|
||||
/* Assuming we get here, leave gracefully */
|
||||
|
|
|
|||
Loading…
Reference in New Issue