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Merge branch 'feature/sync_mdns_from_espidf' into 'master'

Browse Source 
mdns: sync code from esp-idf

See merge request sdk/ESP8266_RTOS_SDK!943
This commit is contained in:
Dong Heng
2019-07-09 15:50:36 +08:00
parent ff9d310ba5 02877a48f0
commit 78cf0dda69
13 changed files with 288 additions and 89 deletions
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5
components/esp8266/include/esp_event.h
View File

@ -23,6 +23,11 @@
#include "lwip/ip_addr.h"
#include "tcpip_adapter.h"
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "freertos/queue.h"
#include "freertos/semphr.h"
#ifdef __cplusplus
extern "C" {
#endif

8
components/mdns/CMakeLists.txt
View File

@ -1,6 +1,5 @@
if(CONFIG_ENABLE_MDNS)
set(COMPONENT_SRCS "src/mdns.c"
"src/mdns_console.c"
"src/mdns_networking.c")
set(COMPONENT_PRIV_INCLUDEDIRS "private_include")
@ -9,5 +8,12 @@ endif()
set(COMPONENT_ADD_INCLUDEDIRS "include")
set(COMPONENT_REQUIRES "lwip" "ssl" "tcpip_adapter")
if(CONFIG_ENABLE_MDNS_CONSOLE)
set(COMPONENT_SRCS "${COMPONENT_SRCS}"
"src/mdns_console.c")
endif()
set(COMPONENT_REQUIRES "console" "tcpip_adapter" "newlib")
register_component()

8
components/mdns/Kconfig
View File

@ -7,6 +7,14 @@ config ENABLE_MDNS
help
Enable this option and then mDNS is to be used.
config ENABLE_MDNS_CONSOLE
bool "Enable mDNS console"
default n
depends on ENABLE_MDNS
select USING_ESP_CONSOLE
help
Enable this option and then mDNS console is to be used.
config MDNS_MAX_SERVICES
int "Max number of services"
range 1 64

4
components/mdns/component.mk
View File

@ -4,3 +4,7 @@ COMPONENT_PRIV_INCLUDEDIRS := private_include
ifdef CONFIG_ENABLE_MDNS
COMPONENT_SRCDIRS := src
endif
ifndef CONFIG_ENABLE_MDNS_CONSOLE
COMPONENT_OBJEXCLUDE := src/mdns_console.o
endif

5
components/mdns/private_include/mdns_networking.h
View File

@ -5,6 +5,8 @@
* MDNS Server Networking -- private include
*
*/
#include "mdns.h"
#include "sdkconfig.h"
#include "freertos/FreeRTOS.h"
#include "freertos/queue.h"
@ -19,8 +21,7 @@
#include "esp_system.h"
#include "esp_timer.h"
#include "esp_event_loop.h"
#include "mdns.h"
#include "mdns_private.h"
/**
* @brief Queue RX packet action

17
components/mdns/private_include/mdns_private.h
View File

@ -14,6 +14,12 @@
#ifndef MDNS_PRIVATE_H_
#define MDNS_PRIVATE_H_
#include <stdint.h>
#include <stdbool.h>
#include "tcpip_adapter.h"
#include "esp_timer.h"
#include "mdns.h"
//#define MDNS_ENABLE_DEBUG
#ifdef MDNS_ENABLE_DEBUG
@ -52,7 +58,7 @@
#define MDNS_ANSWER_SDPTR 0x80
#define MDNS_SERVICE_PORT 5353 // UDP port that the server runs on
#define MDNS_SERVICE_STACK_DEPTH CONFIG_MDNS_STACKSIZE // Stack size for the service thread
#define MDNS_SERVICE_STACK_DEPTH 4096 // Stack size for the service thread
#define MDNS_PACKET_QUEUE_LEN 16 // Maximum packets that can be queued for parsing
#define MDNS_ACTION_QUEUE_LEN 16 // Maximum actions pending to the server
#define MDNS_TXT_MAX_LEN 1024 // Maximum string length of text data in TXT record
@ -115,9 +121,9 @@
#define PCB_STATE_IS_ANNOUNCING(s) (s->state > PCB_PROBE_3 && s->state < PCB_RUNNING)
#define PCB_STATE_IS_RUNNING(s) (s->state == PCB_RUNNING)
#define MDNS_SEARCH_LOCK() xSemaphoreTake(_mdns_server->search.lock, portMAX_DELAY)
#define MDNS_SEARCH_UNLOCK() xSemaphoreGive(_mdns_server->search.lock)
#ifndef HOOK_MALLOC_FAILED
#define HOOK_MALLOC_FAILED ESP_LOGE(TAG, "Cannot allocate memory (line: %d, free heap: %d bytes)", __LINE__, esp_get_free_heap_size());
#endif
typedef enum {
PCB_OFF, PCB_DUP, PCB_INIT,
@ -289,6 +295,7 @@ typedef struct mdns_tx_packet_s {
mdns_out_answer_t * answers;
mdns_out_answer_t * servers;
mdns_out_answer_t * additional;
bool queued;
} mdns_tx_packet_t;
typedef struct {
@ -315,7 +322,7 @@ typedef struct mdns_search_once_s {
uint32_t started_at;
uint32_t sent_at;
uint32_t timeout;
SemaphoreHandle_t lock;
SemaphoreHandle_t done_semaphore;
uint16_t type;
uint8_t max_results;
uint8_t num_results;

256
components/mdns/src/mdns.c
View File

@ -13,11 +13,10 @@
// limitations under the License.
#include "mdns.h"
#include "mdns_networking.h"
#include "mdns_private.h"
#include "mdns_networking.h"
#include "esp_log.h"
#include <string.h>
#include <stdlib.h>
#ifdef MDNS_ENABLE_DEBUG
void mdns_debug_packet(const uint8_t * data, size_t len);
@ -28,6 +27,8 @@ static const char * MDNS_SUB_STR = "_sub";
mdns_server_t * _mdns_server = NULL;
static const char *TAG = "MDNS";
static volatile TaskHandle_t _mdns_service_task_handle = NULL;
static SemaphoreHandle_t _mdns_service_semaphore = NULL;
@ -65,11 +66,16 @@ static char * _mdns_mangle_name(char* in) {
//need to add -2 to string
ret = malloc(strlen(in) + 3);
if (ret == NULL) {
HOOK_MALLOC_FAILED;
return NULL;
}
sprintf(ret, "%s-2", in);
} else {
ret = malloc(strlen(in) + 2); //one extra byte in case 9-10 or 99-100 etc
if (ret == NULL) {
HOOK_MALLOC_FAILED;
return NULL;
}
strcpy(ret, in);
int baseLen = p - in; //length of 'bla' in 'bla-123'
//overwrite suffix with new suffix
@ -119,6 +125,7 @@ esp_err_t _mdns_send_rx_action(mdns_rx_packet_t * packet)
action = (mdns_action_t *)malloc(sizeof(mdns_action_t));
if (!action) {
HOOK_MALLOC_FAILED;
return ESP_ERR_NO_MEM;
}
@ -559,6 +566,9 @@ static uint16_t _mdns_append_txt_record(uint8_t * packet, uint16_t * index, mdns
return 0;
}
data_len += l;
} else {
HOOK_MALLOC_FAILED;
// continue
}
txt = txt->next;
}
@ -1132,6 +1142,7 @@ static bool _mdns_alloc_answer(mdns_out_answer_t ** destnation, uint16_t type, m
mdns_out_answer_t * a = (mdns_out_answer_t *)malloc(sizeof(mdns_out_answer_t));
if (!a) {
HOOK_MALLOC_FAILED;
return false;
}
a->type = type;
@ -1150,6 +1161,7 @@ static mdns_tx_packet_t * _mdns_alloc_packet_default(tcpip_adapter_if_t tcpip_if
{
mdns_tx_packet_t * packet = (mdns_tx_packet_t*)malloc(sizeof(mdns_tx_packet_t));
if (!packet) {
HOOK_MALLOC_FAILED;
return NULL;
}
memset((uint8_t*)packet, 0, sizeof(mdns_tx_packet_t));
@ -1287,6 +1299,7 @@ static mdns_tx_packet_t * _mdns_create_probe_packet(tcpip_adapter_if_t tcpip_if,
for (i=0; i<len; i++) {
mdns_out_question_t * q = (mdns_out_question_t *)malloc(sizeof(mdns_out_question_t));
if (!q) {
HOOK_MALLOC_FAILED;
_mdns_free_tx_packet(packet);
return NULL;
}
@ -1312,6 +1325,7 @@ static mdns_tx_packet_t * _mdns_create_probe_packet(tcpip_adapter_if_t tcpip_if,
if (include_ip && !_str_null_or_empty(_mdns_server->hostname)) {
mdns_out_question_t * q = (mdns_out_question_t *)malloc(sizeof(mdns_out_question_t));
if (!q) {
HOOK_MALLOC_FAILED;
_mdns_free_tx_packet(packet);
return NULL;
}
@ -1438,20 +1452,13 @@ static void _mdns_pcb_send_bye(tcpip_adapter_if_t tcpip_if, mdns_ip_protocol_t i
}
/**
* @brief Send probe for particular services on particular PCB
* @brief Send probe for additional services on particular PCB
*/
static void _mdns_init_pcb_probe(tcpip_adapter_if_t tcpip_if, mdns_ip_protocol_t ip_protocol, mdns_srv_item_t ** services, size_t len, bool probe_ip)
static void _mdns_init_pcb_probe_new_service(tcpip_adapter_if_t tcpip_if, mdns_ip_protocol_t ip_protocol, mdns_srv_item_t ** services, size_t len, bool probe_ip)
{
mdns_pcb_t * pcb = &_mdns_server->interfaces[tcpip_if].pcbs[ip_protocol];
size_t services_final_len = len;
_mdns_clear_pcb_tx_queue_head(tcpip_if, ip_protocol);
if (_str_null_or_empty(_mdns_server->hostname)) {
pcb->state = PCB_RUNNING;
return;
}
if (PCB_STATE_IS_PROBING(pcb)) {
services_final_len += pcb->probe_services_len;
}
@ -1459,6 +1466,7 @@ static void _mdns_init_pcb_probe(tcpip_adapter_if_t tcpip_if, mdns_ip_protocol_t
if (services_final_len) {
_services = (mdns_srv_item_t **)malloc(sizeof(mdns_srv_item_t *) * services_final_len);
if (!_services) {
HOOK_MALLOC_FAILED;
return;
}
@ -1495,6 +1503,50 @@ static void _mdns_init_pcb_probe(tcpip_adapter_if_t tcpip_if, mdns_ip_protocol_t
pcb->state = PCB_PROBE_1;
}
/**
* @brief Send probe for particular services on particular PCB
*
* Tests possible duplication on probing service structure and probes only for new entries.
* - If pcb probing then add only non-probing services and restarts probing
* - If pcb not probing, run probing for all specified services
*/
static void _mdns_init_pcb_probe(tcpip_adapter_if_t tcpip_if, mdns_ip_protocol_t ip_protocol, mdns_srv_item_t ** services, size_t len, bool probe_ip)
{
mdns_pcb_t * pcb = &_mdns_server->interfaces[tcpip_if].pcbs[ip_protocol];
_mdns_clear_pcb_tx_queue_head(tcpip_if, ip_protocol);
if (_str_null_or_empty(_mdns_server->hostname)) {
pcb->state = PCB_RUNNING;
return;
}
if (PCB_STATE_IS_PROBING(pcb)) {
// Looking for already probing services to resolve duplications
mdns_srv_item_t * new_probe_services[len];
int new_probe_service_len = 0;
bool found;
for (int j=0; j < len; ++j) {
found = false;
for (int i=0; i < pcb->probe_services_len; ++i) {
if (pcb->probe_services[i] == services[j]) {
found = true;
break;
}
}
if (!found) {
new_probe_services[new_probe_service_len++] = services[j];
}
}
// init probing for newly added services
_mdns_init_pcb_probe_new_service(tcpip_if, ip_protocol,
new_probe_service_len?new_probe_services:NULL, new_probe_service_len, probe_ip);
} else {
// not probing, so init for all services
_mdns_init_pcb_probe_new_service(tcpip_if, ip_protocol, services, len, probe_ip);
}
}
/**
* @brief Restart the responder on particular PCB
*/
@ -1739,6 +1791,7 @@ static mdns_txt_linked_item_t * _mdns_allocate_txt(size_t num_items, mdns_txt_it
for (i=0; i<num_items; i++) {
mdns_txt_linked_item_t * new_item = (mdns_txt_linked_item_t *)malloc(sizeof(mdns_txt_linked_item_t));
if (!new_item) {
HOOK_MALLOC_FAILED;
break;
}
new_item->key = strdup(txt[i].key);
@ -1785,6 +1838,7 @@ static mdns_service_t * _mdns_create_service(const char * service, const char *
{
mdns_service_t * s = (mdns_service_t *)malloc(sizeof(mdns_service_t));
if (!s) {
HOOK_MALLOC_FAILED;
return NULL;
}
@ -1846,6 +1900,9 @@ static void _mdns_dealloc_scheduled_service_answers(mdns_out_answer_t ** destina
*/
static void _mdns_remove_scheduled_service_packets(mdns_service_t * service)
{
if (!service) {
return;
}
mdns_tx_packet_t * p = NULL;
mdns_tx_packet_t * q = _mdns_server->tx_queue_head;
while (q) {
@ -1934,7 +1991,6 @@ static void _mdns_free_service(mdns_service_t * service)
if (!service) {
return;
}
_mdns_remove_scheduled_service_packets(service);
free((char *)service->instance);
free((char *)service->service);
free((char *)service->proto);
@ -2048,6 +2104,9 @@ static int _mdns_check_txt_collision(mdns_service_t * service, const uint8_t * d
sprintf(tmp, "%s=%s", txt->key, txt->value);
_mdns_append_string(ours, &index, tmp);
free(tmp);
} else {
HOOK_MALLOC_FAILED;
// continue
}
txt = txt->next;
}
@ -2404,6 +2463,10 @@ static void _mdns_result_txt_create(const uint8_t * data, size_t len, mdns_txt_i
}
mdns_txt_item_t * txt = (mdns_txt_item_t *)malloc(sizeof(mdns_txt_item_t) * num_items);
if (!txt) {
HOOK_MALLOC_FAILED;
return;
}
memset(txt, 0, sizeof(mdns_txt_item_t) * num_items);
size_t txt_num = 0;
@ -2424,6 +2487,7 @@ static void _mdns_result_txt_create(const uint8_t * data, size_t len, mdns_txt_i
}
char * key = (char *)malloc(name_len + 1);
if (!key) {
HOOK_MALLOC_FAILED;
goto handle_error;//error
}
@ -2437,6 +2501,10 @@ static void _mdns_result_txt_create(const uint8_t * data, size_t len, mdns_txt_i
int value_len = partLen - name_len - 1;
if (value_len > 0) {
char * value = (char *)malloc(value_len + 1);
if (!value) {
HOOK_MALLOC_FAILED;
goto handle_error;//error
}
memcpy(value, data + i, value_len);
value[value_len] = 0;
i += value_len;
@ -2500,6 +2568,7 @@ void mdns_parse_packet(mdns_rx_packet_t * packet)
mdns_parsed_packet_t * parsed_packet = (mdns_parsed_packet_t *)malloc(sizeof(mdns_parsed_packet_t));
if (!parsed_packet) {
HOOK_MALLOC_FAILED;
return;
}
memset(parsed_packet, 0, sizeof(mdns_parsed_packet_t));
@ -2560,8 +2629,9 @@ void mdns_parse_packet(mdns_rx_packet_t * packet)
parsed_packet->discovery = true;
mdns_srv_item_t * a = _mdns_server->services;
while (a) {
mdns_parsed_question_t * question = (mdns_parsed_question_t *)malloc(sizeof(mdns_parsed_question_t));
mdns_parsed_question_t * question = (mdns_parsed_question_t *)calloc(1, sizeof(mdns_parsed_question_t));
if (!question) {
HOOK_MALLOC_FAILED;
goto clear_rx_packet;
}
question->next = parsed_packet->questions;
@ -2587,8 +2657,9 @@ void mdns_parse_packet(mdns_rx_packet_t * packet)
parsed_packet->probe = true;
}
mdns_parsed_question_t * question = (mdns_parsed_question_t *)malloc(sizeof(mdns_parsed_question_t));
mdns_parsed_question_t * question = (mdns_parsed_question_t *)calloc(1, sizeof(mdns_parsed_question_t));
if (!question) {
HOOK_MALLOC_FAILED;
goto clear_rx_packet;
}
question->next = parsed_packet->questions;
@ -2709,8 +2780,10 @@ void mdns_parse_packet(mdns_rx_packet_t * packet)
if (search_result) {
if (search_result->type == MDNS_TYPE_PTR) {
result->port = port;
result->hostname = strdup(name->host);
if (!result->hostname) { // assign host/port for this entry only if not previously set
result->port = port;
result->hostname = strdup(name->host);
}
} else {
_mdns_search_result_add_srv(search_result, name->host, port, packet->tcpip_if, packet->ip_protocol);
}
@ -2771,10 +2844,6 @@ void mdns_parse_packet(mdns_rx_packet_t * packet)
if (search_result) {
mdns_txt_item_t * txt = NULL;
size_t txt_count = 0;
_mdns_result_txt_create(data_ptr, data_len, &txt, &txt_count);
if (!txt_count) {
continue;
}
mdns_result_t * result = NULL;
if (search_result->type == MDNS_TYPE_PTR) {
@ -2794,11 +2863,17 @@ void mdns_parse_packet(mdns_rx_packet_t * packet)
}
}
if (!result->txt) {
result->txt = txt;
result->txt_count = txt_count;
_mdns_result_txt_create(data_ptr, data_len, &txt, &txt_count);
if (txt_count) {
result->txt = txt;
result->txt_count = txt_count;
}
}
} else {
_mdns_search_result_add_txt(search_result, txt, txt_count, packet->tcpip_if, packet->ip_protocol);
_mdns_result_txt_create(data_ptr, data_len, &txt, &txt_count);
if (txt_count) {
_mdns_search_result_add_txt(search_result, txt, txt_count, packet->tcpip_if, packet->ip_protocol);
}
}
} else if (ours) {
if (parsed_packet->questions && !parsed_packet->probe) {
@ -3038,7 +3113,7 @@ static void _mdns_search_free(mdns_search_once_t * search)
free(search->instance);
free(search->service);
free(search->proto);
vSemaphoreDelete(search->lock);
vSemaphoreDelete(search->done_semaphore);
free(search);
}
@ -3049,12 +3124,13 @@ static mdns_search_once_t * _mdns_search_init(const char * name, const char * se
{
mdns_search_once_t * search = (mdns_search_once_t *)malloc(sizeof(mdns_search_once_t));
if (!search) {
HOOK_MALLOC_FAILED;
return NULL;
}
memset(search, 0, sizeof(mdns_search_once_t));
search->lock = xSemaphoreCreateMutex();
if (!search->lock) {
search->done_semaphore = xSemaphoreCreateBinary();
if (!search->done_semaphore) {
free(search);
return NULL;
}
@ -3093,8 +3169,6 @@ static mdns_search_once_t * _mdns_search_init(const char * name, const char * se
search->started_at = xTaskGetTickCount() * portTICK_PERIOD_MS;
search->next = NULL;
xSemaphoreTake(search->lock, 0);
return search;
}
@ -3105,7 +3179,7 @@ static void _mdns_search_finish(mdns_search_once_t * search)
{
search->state = SEARCH_OFF;
queueDetach(mdns_search_once_t, _mdns_server->search_once, search);
xSemaphoreGive(search->lock);
xSemaphoreGive(search->done_semaphore);
}
/**
@ -3140,6 +3214,7 @@ static mdns_ip_addr_t * _mdns_result_addr_create_ip(ip_addr_t * ip)
{
mdns_ip_addr_t * a = (mdns_ip_addr_t *)malloc(sizeof(mdns_ip_addr_t));
if (!a) {
HOOK_MALLOC_FAILED;
return NULL;
}
memset(a, 0 , sizeof(mdns_ip_addr_t));
@ -3199,6 +3274,7 @@ static void _mdns_search_result_add_ip(mdns_search_once_t * search, const char *
if (!search->max_results || search->num_results < search->max_results) {
r = (mdns_result_t *)malloc(sizeof(mdns_result_t));
if (!r) {
HOOK_MALLOC_FAILED;
return;
}
@ -3244,6 +3320,7 @@ static mdns_result_t * _mdns_search_result_add_ptr(mdns_search_once_t * search,
if (!search->max_results || search->num_results < search->max_results) {
r = (mdns_result_t *)malloc(sizeof(mdns_result_t));
if (!r) {
HOOK_MALLOC_FAILED;
return NULL;
}
@ -3279,6 +3356,7 @@ static void _mdns_search_result_add_srv(mdns_search_once_t * search, const char
if (!search->max_results || search->num_results < search->max_results) {
r = (mdns_result_t *)malloc(sizeof(mdns_result_t));
if (!r) {
HOOK_MALLOC_FAILED;
return;
}
@ -3307,7 +3385,7 @@ static void _mdns_search_result_add_txt(mdns_search_once_t * search, mdns_txt_it
while (r) {
if (r->tcpip_if == tcpip_if && r->ip_protocol == ip_protocol) {
if (r->txt) {
return;
goto free_txt;
}
r->txt = txt;
r->txt_count = txt_count;
@ -3318,12 +3396,8 @@ static void _mdns_search_result_add_txt(mdns_search_once_t * search, mdns_txt_it
if (!search->max_results || search->num_results < search->max_results) {
r = (mdns_result_t *)malloc(sizeof(mdns_result_t));
if (!r) {
for (i=0; i<txt_count; i++) {
free((char *)(txt[i].key));
free((char *)(txt[i].value));
}
free(txt);
return;
HOOK_MALLOC_FAILED;
goto free_txt;
}
memset(r, 0 , sizeof(mdns_result_t));
@ -3335,6 +3409,14 @@ static void _mdns_search_result_add_txt(mdns_search_once_t * search, mdns_txt_it
search->result = r;
search->num_results++;
}
return;
free_txt:
for (i=0; i<txt_count; i++) {
free((char *)(txt[i].key));
free((char *)(txt[i].value));
}
free(txt);
}
/**
@ -3420,6 +3502,7 @@ static mdns_tx_packet_t * _mdns_create_search_packet(mdns_search_once_t * search
mdns_out_question_t * q = (mdns_out_question_t *)malloc(sizeof(mdns_out_question_t));
if (!q) {
HOOK_MALLOC_FAILED;
_mdns_free_tx_packet(packet);
return NULL;
}
@ -3442,6 +3525,7 @@ static mdns_tx_packet_t * _mdns_create_search_packet(mdns_search_once_t * search
}
mdns_out_answer_t * a = (mdns_out_answer_t *)malloc(sizeof(mdns_out_answer_t));
if (!a) {
HOOK_MALLOC_FAILED;
_mdns_free_tx_packet(packet);
return NULL;
}
@ -3467,7 +3551,7 @@ static mdns_tx_packet_t * _mdns_create_search_packet(mdns_search_once_t * search
static void _mdns_search_send_pcb(mdns_search_once_t * search, tcpip_adapter_if_t tcpip_if, mdns_ip_protocol_t ip_protocol)
{
mdns_tx_packet_t * packet = NULL;
if (_mdns_server->interfaces[tcpip_if].pcbs[ip_protocol].pcb && _mdns_server->interfaces[tcpip_if].pcbs[ip_protocol].state == PCB_RUNNING) {
if (_mdns_server->interfaces[tcpip_if].pcbs[ip_protocol].pcb && _mdns_server->interfaces[tcpip_if].pcbs[ip_protocol].state > PCB_INIT) {
packet = _mdns_create_search_packet(search, tcpip_if, ip_protocol);
if (!packet) {
return;
@ -3482,6 +3566,22 @@ static void _mdns_search_send_pcb(mdns_search_once_t * search, tcpip_adapter_if_
*/
static void _mdns_search_send(mdns_search_once_t * search)
{
mdns_search_once_t* queue = _mdns_server->search_once;
bool found = false;
// looking for this search in active searches
while (queue) {
if (queue == search) {
found = true;
break;
}
queue = queue->next;
}
if (!found) {
// no longer active -> skip sending this search
return;
}
uint8_t i, j;
for (i=0; i<TCPIP_ADAPTER_IF_MAX; i++) {
for (j=0; j<MDNS_IP_PROTOCOL_MAX; j++) {
@ -3671,6 +3771,7 @@ static void _mdns_execute_action(mdns_action_t * action)
if (!txt) {
txt = (mdns_txt_linked_item_t *)malloc(sizeof(mdns_txt_linked_item_t));
if (!txt) {
HOOK_MALLOC_FAILED;
_mdns_free_action(action);
return;
}
@ -3719,6 +3820,7 @@ static void _mdns_execute_action(mdns_action_t * action)
if (_mdns_server->services == action->data.srv_del.service) {
_mdns_server->services = a->next;
_mdns_send_bye(&a, 1, false);
_mdns_remove_scheduled_service_packets(a->service);
_mdns_free_service(a->service);
free(a);
} else {
@ -3729,6 +3831,7 @@ static void _mdns_execute_action(mdns_action_t * action)
mdns_srv_item_t * b = a->next;
a->next = a->next->next;
_mdns_send_bye(&b, 1, false);
_mdns_remove_scheduled_service_packets(b->service);
_mdns_free_service(b->service);
free(b);
}
@ -3742,6 +3845,7 @@ static void _mdns_execute_action(mdns_action_t * action)
while (a) {
mdns_srv_item_t * s = a;
a = a->next;
_mdns_remove_scheduled_service_packets(s->service);
_mdns_free_service(s->service);
free(s);
}
@ -3757,7 +3861,17 @@ static void _mdns_execute_action(mdns_action_t * action)
_mdns_search_finish(action->data.search_add.search);
break;
case ACTION_TX_HANDLE:
_mdns_tx_handle_packet(action->data.tx_handle.packet);
{
mdns_tx_packet_t * p = _mdns_server->tx_queue_head;
// packet to be handled should be at tx head, but must be consistent with the one pushed to action queue
if (p && p==action->data.tx_handle.packet && p->queued) {
p->queued = false; // clearing, as the packet might be reused (pushed and transmitted again)
_mdns_server->tx_queue_head = p->next;
_mdns_tx_handle_packet(p);
} else {
ESP_LOGD(TAG, "Skipping transmit of an unexpected packet!");
}
}
break;
case ACTION_RX_HANDLE:
mdns_parse_packet(action->data.rx_handle.packet);
@ -3779,6 +3893,7 @@ static esp_err_t _mdns_send_search_action(mdns_action_type_t type, mdns_search_o
action = (mdns_action_t *)malloc(sizeof(mdns_action_t));
if (!action) {
HOOK_MALLOC_FAILED;
return ESP_ERR_NO_MEM;
}
@ -3793,26 +3908,38 @@ static esp_err_t _mdns_send_search_action(mdns_action_type_t type, mdns_search_o
/**
* @brief Called from timer task to run mDNS responder
*
* periodically checks first unqueued packet (from tx head).
* if it is scheduled to be transmitted, then pushes the packet to action queue to be handled.
*
*/
static void _mdns_scheduler_run()
{
MDNS_SERVICE_LOCK();
mdns_tx_packet_t * p = _mdns_server->tx_queue_head;
mdns_action_t * action = NULL;
// find first unqueued packet
while (p && p->queued) {
p = p->next;
}
if (!p) {
MDNS_SERVICE_UNLOCK();
return;
}
MDNS_SERVICE_LOCK();
if ((int32_t)(p->send_at - (xTaskGetTickCount() * portTICK_PERIOD_MS)) < 0) {
action = (mdns_action_t *)malloc(sizeof(mdns_action_t));
if (action) {
_mdns_server->tx_queue_head = p->next;
action->type = ACTION_TX_HANDLE;
action->data.tx_handle.packet = p;
p->queued = true;
if (xQueueSend(_mdns_server->action_queue, &action, (portTickType)0) != pdPASS) {
free(action);
_mdns_server->tx_queue_head = p;
p->queued = false;
}
} else {
HOOK_MALLOC_FAILED;
// continue
}
}
MDNS_SERVICE_UNLOCK();
@ -3826,7 +3953,6 @@ static void _mdns_search_run()
MDNS_SERVICE_LOCK();
mdns_search_once_t * s = _mdns_server->search_once;
uint32_t now = xTaskGetTickCount() * portTICK_PERIOD_MS;
if (!s) {
MDNS_SERVICE_UNLOCK();
return;
@ -3930,7 +4056,10 @@ static esp_err_t _mdns_service_task_start()
if (!_mdns_service_task_handle) {
xTaskCreatePinnedToCore(_mdns_service_task, "mdns", MDNS_SERVICE_STACK_DEPTH, NULL, 1, (TaskHandle_t * const)(&_mdns_service_task_handle), 0);
if (!_mdns_service_task_handle) {
_mdns_stop_timer();
MDNS_SERVICE_UNLOCK();
vSemaphoreDelete(_mdns_service_semaphore);
_mdns_service_semaphore = NULL;
return ESP_FAIL;
}
}
@ -3946,7 +4075,6 @@ static esp_err_t _mdns_service_task_start()
*/
static esp_err_t _mdns_service_task_stop()
{
MDNS_SERVICE_LOCK();
_mdns_stop_timer();
if (_mdns_service_task_handle) {
mdns_action_t action;
@ -3960,7 +4088,8 @@ static esp_err_t _mdns_service_task_stop()
vTaskDelay(10 / portTICK_PERIOD_MS);
}
}
MDNS_SERVICE_UNLOCK();
vSemaphoreDelete(_mdns_service_semaphore);
_mdns_service_semaphore = NULL;
return ESP_OK;
}
@ -3976,6 +4105,7 @@ esp_err_t mdns_handle_system_event(void *ctx, system_event_t *event)
mdns_action_t * action = (mdns_action_t *)malloc(sizeof(mdns_action_t));
if (!action) {
HOOK_MALLOC_FAILED;
return ESP_OK;
}
action->type = ACTION_SYSTEM_EVENT;
@ -3997,6 +4127,7 @@ esp_err_t mdns_init()
_mdns_server = (mdns_server_t *)malloc(sizeof(mdns_server_t));
if (!_mdns_server) {
HOOK_MALLOC_FAILED;
return ESP_ERR_NO_MEM;
}
memset((uint8_t*)_mdns_server, 0, sizeof(mdns_server_t));
@ -4013,12 +4144,6 @@ esp_err_t mdns_init()
goto free_lock;
}
if (_mdns_service_task_start()) {
//service start failed!
err = ESP_FAIL;
goto free_all;
}
uint8_t i;
ip6_addr_t tmp_addr6;
tcpip_adapter_ip_info_t if_ip_info;
@ -4032,9 +4157,19 @@ esp_err_t mdns_init()
}
}
if (_mdns_service_task_start()) {
//service start failed!
err = ESP_FAIL;
goto free_all_and_disable_pcbs;
}
return ESP_OK;
free_all:
free_all_and_disable_pcbs:
for (i=0; i<TCPIP_ADAPTER_IF_MAX; i++) {
_mdns_disable_pcb(i, MDNS_IP_PROTOCOL_V6);
_mdns_disable_pcb(i, MDNS_IP_PROTOCOL_V4);
}
vQueueDelete(_mdns_server->action_queue);
free_lock:
vSemaphoreDelete(_mdns_server->lock);
@ -4050,8 +4185,8 @@ void mdns_free()
if (!_mdns_server) {
return;
}
_mdns_service_task_stop();
mdns_service_remove_all(_mdns_server);
_mdns_service_task_stop();
for (i=0; i<TCPIP_ADAPTER_IF_MAX; i++) {
for (j=0; j<MDNS_IP_PROTOCOL_MAX; j++) {
_mdns_pcb_deinit(i, j);
@ -4073,7 +4208,7 @@ void mdns_free()
free(h->instance);
free(h->service);
free(h->proto);
vSemaphoreDelete(h->lock);
vSemaphoreDelete(h->done_semaphore);
if (h->result) {
mdns_query_results_free(h->result);
}
@ -4099,6 +4234,7 @@ esp_err_t mdns_hostname_set(const char * hostname)
mdns_action_t * action = (mdns_action_t *)malloc(sizeof(mdns_action_t));
if (!action) {
HOOK_MALLOC_FAILED;
free(new_hostname);
return ESP_ERR_NO_MEM;
}
@ -4127,6 +4263,7 @@ esp_err_t mdns_instance_name_set(const char * instance)
mdns_action_t * action = (mdns_action_t *)malloc(sizeof(mdns_action_t));
if (!action) {
HOOK_MALLOC_FAILED;
free(new_instance);
return ESP_ERR_NO_MEM;
}
@ -4166,6 +4303,7 @@ esp_err_t mdns_service_add(const char * instance, const char * service, const ch
item = (mdns_srv_item_t *)malloc(sizeof(mdns_srv_item_t));
if (!item) {
HOOK_MALLOC_FAILED;
_mdns_free_service(s);
return ESP_ERR_NO_MEM;
}
@ -4175,6 +4313,7 @@ esp_err_t mdns_service_add(const char * instance, const char * service, const ch
mdns_action_t * action = (mdns_action_t *)malloc(sizeof(mdns_action_t));
if (!action) {
HOOK_MALLOC_FAILED;
_mdns_free_service(s);
free(item);
return ESP_ERR_NO_MEM;
@ -4211,6 +4350,7 @@ esp_err_t mdns_service_port_set(const char * service, const char * proto, uint16
mdns_action_t * action = (mdns_action_t *)malloc(sizeof(mdns_action_t));
if (!action) {
HOOK_MALLOC_FAILED;
return ESP_ERR_NO_MEM;
}
action->type = ACTION_SERVICE_PORT_SET;
@ -4243,6 +4383,7 @@ esp_err_t mdns_service_txt_set(const char * service, const char * proto, mdns_tx
mdns_action_t * action = (mdns_action_t *)malloc(sizeof(mdns_action_t));
if (!action) {
HOOK_MALLOC_FAILED;
_mdns_free_linked_txt(new_txt);
return ESP_ERR_NO_MEM;
}
@ -4270,6 +4411,7 @@ esp_err_t mdns_service_txt_item_set(const char * service, const char * proto, co
}
mdns_action_t * action = (mdns_action_t *)malloc(sizeof(mdns_action_t));
if (!action) {
HOOK_MALLOC_FAILED;
return ESP_ERR_NO_MEM;
}
@ -4306,6 +4448,7 @@ esp_err_t mdns_service_txt_item_remove(const char * service, const char * proto,
}
mdns_action_t * action = (mdns_action_t *)malloc(sizeof(mdns_action_t));
if (!action) {
HOOK_MALLOC_FAILED;
return ESP_ERR_NO_MEM;
}
@ -4343,6 +4486,7 @@ esp_err_t mdns_service_instance_name_set(const char * service, const char * prot
mdns_action_t * action = (mdns_action_t *)malloc(sizeof(mdns_action_t));
if (!action) {
HOOK_MALLOC_FAILED;
free(new_instance);
return ESP_ERR_NO_MEM;
}
@ -4369,6 +4513,7 @@ esp_err_t mdns_service_remove(const char * service, const char * proto)
mdns_action_t * action = (mdns_action_t *)malloc(sizeof(mdns_action_t));
if (!action) {
HOOK_MALLOC_FAILED;
return ESP_ERR_NO_MEM;
}
action->type = ACTION_SERVICE_DEL;
@ -4391,6 +4536,7 @@ esp_err_t mdns_service_remove_all()
mdns_action_t * action = (mdns_action_t *)malloc(sizeof(mdns_action_t));
if (!action) {
HOOK_MALLOC_FAILED;
return ESP_ERR_NO_MEM;
}
action->type = ACTION_SERVICES_CLEAR;
@ -4457,7 +4603,7 @@ esp_err_t mdns_query(const char * name, const char * service, const char * proto
_mdns_search_free(search);
return ESP_ERR_NO_MEM;
}
xSemaphoreTake(search->lock, portMAX_DELAY);
xSemaphoreTake(search->done_semaphore, portMAX_DELAY);
*results = search->result;
_mdns_search_free(search);

3
components/mdns/src/mdns_console.c
View File

@ -11,7 +11,6 @@
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#ifdef MDNS_ENABLE_CONSOLE
#include <stdio.h>
#include <string.h>
#include "esp_console.h"
@ -1058,4 +1057,4 @@ void mdns_console_register()
register_mdns_query_ip();
register_mdns_query_svc();
}
#endif

50
components/mdns/src/mdns_networking.c
View File

@ -4,8 +4,9 @@
*
*/
#include <string.h>
#include <stdlib.h>
#include "mdns_private.h"
#include "mdns_networking.h"
#include "esp_log.h"
extern mdns_server_t * _mdns_server;
@ -14,6 +15,7 @@ extern mdns_server_t * _mdns_server;
* MDNS Server Networking
*
*/
static const char *TAG = "MDNS_Networking";
static struct udp_pcb * _pcb_main = NULL;
@ -119,6 +121,7 @@ static void _udp_recv(void *arg, struct udp_pcb *upcb, struct pbuf *pb, const ip
mdns_rx_packet_t * packet = (mdns_rx_packet_t *)malloc(sizeof(mdns_rx_packet_t));
if (!packet) {
HOOK_MALLOC_FAILED;
//missed packet - no memory
pbuf_free(this_pb);
continue;
@ -240,6 +243,9 @@ typedef struct {
struct tcpip_api_call_data call;
tcpip_adapter_if_t tcpip_if;
mdns_ip_protocol_t ip_protocol;
struct pbuf *pbt;
const ip_addr_t *ip;
uint16_t port;
esp_err_t err;
} mdns_api_call_t;
@ -275,7 +281,7 @@ esp_err_t _mdns_pcb_init(tcpip_adapter_if_t tcpip_if, mdns_ip_protocol_t ip_prot
.tcpip_if = tcpip_if,
.ip_protocol = ip_protocol
};
tcpip_api_call(_mdns_pcb_init_api, (struct tcpip_api_call_data*)&msg);
tcpip_api_call(_mdns_pcb_init_api, &msg.call);
return msg.err;
}
@ -285,29 +291,45 @@ esp_err_t _mdns_pcb_deinit(tcpip_adapter_if_t tcpip_if, mdns_ip_protocol_t ip_pr
.tcpip_if = tcpip_if,
.ip_protocol = ip_protocol
};
tcpip_api_call(_mdns_pcb_deinit_api, (struct tcpip_api_call_data*)&msg);
tcpip_api_call(_mdns_pcb_deinit_api, &msg.call);
return msg.err;
}
static err_t _mdns_udp_pcb_write_api(struct tcpip_api_call_data *api_call_msg)
{
void * nif = NULL;
mdns_api_call_t * msg = (mdns_api_call_t *)api_call_msg;
mdns_pcb_t * _pcb = &_mdns_server->interfaces[msg->tcpip_if].pcbs[msg->ip_protocol];
esp_err_t err = tcpip_adapter_get_netif(msg->tcpip_if, &nif);
if (err) {
pbuf_free(msg->pbt);
msg->err = err;
return err;
}
err = udp_sendto_if (_pcb->pcb, msg->pbt, msg->ip, msg->port, (struct netif *)nif);
pbuf_free(msg->pbt);
msg->err = err;
return err;
}
size_t _mdns_udp_pcb_write(tcpip_adapter_if_t tcpip_if, mdns_ip_protocol_t ip_protocol, const ip_addr_t *ip, uint16_t port, uint8_t * data, size_t len)
{
struct netif * netif = NULL;
void * nif = NULL;
esp_err_t err = tcpip_adapter_get_netif(tcpip_if, &nif);
netif = (struct netif *)nif;
if (err) {
return 0;
}
struct pbuf* pbt = pbuf_alloc(PBUF_TRANSPORT, len, PBUF_RAM);
if (pbt == NULL) {
return 0;
}
memcpy((uint8_t *)pbt->payload, data, len);
err = udp_sendto_if (_mdns_server->interfaces[tcpip_if].pcbs[ip_protocol].pcb, pbt, ip, port, netif);
pbuf_free(pbt);
if (err) {
mdns_api_call_t msg = {
.tcpip_if = tcpip_if,
.ip_protocol = ip_protocol,
.pbt = pbt,
.ip = ip,
.port = port
};
tcpip_api_call(_mdns_udp_pcb_write_api, &msg.call);
if (msg.err) {
return 0;
}
return len;

6
examples/protocols/mdns/CMakeLists.txt
View File

@ -1,6 +1,6 @@
# The following five lines of boilerplate have to be in your project's
# CMakeLists in this exact order for cmake to work correctly
# The following lines of boilerplate have to be in your project's CMakeLists
# in this exact order for cmake to work correctly
cmake_minimum_required(VERSION 3.5)
include($ENV{IDF_PATH}/tools/cmake/project.cmake)
project(mdns)
project(mdns-test)

1
examples/protocols/mdns/main/CMakeLists.txt
View File

@ -1,3 +1,4 @@
set(COMPONENT_SRCS "mdns_example_main.c")
set(COMPONENT_ADD_INCLUDEDIRS ".")
register_component()

2
examples/protocols/mdns/main/Kconfig.projbuild
View File

@ -8,7 +8,7 @@ config WIFI_SSID
config WIFI_PASSWORD
string "WiFi Password"
default "myssid"
default "mypassword"
help
WiFi password (WPA or WPA2) for the example to use.

10
examples/protocols/mdns/main/mdns_example_main.c Executable file → Normal file
View File

@ -145,13 +145,13 @@ static void mdns_print_results(mdns_result_t * results){
if(r->txt_count){
printf(" TXT : [%u] ", r->txt_count);
for(t=0; t<r->txt_count; t++){
printf("%s=%s; ", r->txt[t].key, r->txt[t].value);
printf("%s=%s; ", r->txt[t].key, r->txt[t].value?r->txt[t].value:"NULL");
}
printf("\n");
}
a = r->addr;
while(a){
if(a->addr.type == MDNS_IP_PROTOCOL_V6){
if(a->addr.type == IPADDR_TYPE_V6){
printf(" AAAA: " IPV6STR "\n", IPV62STR(a->addr.u_addr.ip6));
} else {
printf(" A : " IPSTR "\n", IP2STR(&(a->addr.u_addr.ip4)));
@ -170,7 +170,7 @@ static void query_mdns_service(const char * service_name, const char * proto)
mdns_result_t * results = NULL;
esp_err_t err = mdns_query_ptr(service_name, proto, 3000, 20, &results);
if(err){
ESP_LOGE(TAG, "Query Failed");
ESP_LOGE(TAG, "Query Failed: %s", esp_err_to_name(err));
return;
}
if(!results){
@ -192,10 +192,10 @@ static void query_mdns_host(const char * host_name)
esp_err_t err = mdns_query_a(host_name, 2000, &addr);
if(err){
if(err == ESP_ERR_NOT_FOUND){
ESP_LOGW(TAG, "Host was not found!");
ESP_LOGW(TAG, "%s: Host was not found!", esp_err_to_name(err));
return;
}
ESP_LOGE(TAG, "Query Failed");
ESP_LOGE(TAG, "Query Failed: %s", esp_err_to_name(err));
return;
}