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Merge branch 'bugfix/mdns_invalid_hostname_queries_v3.1' into 'release/v3.1'

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mdns: fix crash for hostname queries (backport v3.1)

See merge request espressif/esp-idf!6500
This commit is contained in:
Jiang Jiang Jian 2019-10-30 00:52:04 +08:00
commit dbdde2ec8c
1 changed files with 17 additions and 0 deletions
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17
components/mdns/mdns.c
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@ -426,6 +426,10 @@ static uint16_t _mdns_append_ptr_record(uint8_t * packet, uint16_t * index, cons
uint16_t record_length = 0;
uint8_t part_length;
if (service == NULL) {
return 0;
}
str[0] = instance;
str[1] = service;
str[2] = proto;
@ -470,6 +474,10 @@ static uint16_t _mdns_append_sdptr_record(uint8_t * packet, uint16_t * index, md
uint16_t record_length = 0;
uint8_t part_length;
if (service == NULL) {
return 0;
}
sd_str[0] = (char*)"_services";
sd_str[1] = (char*)"_dns-sd";
sd_str[2] = (char*)"_udp";
@ -515,6 +523,10 @@ static uint16_t _mdns_append_txt_record(uint8_t * packet, uint16_t * index, mdns
uint16_t record_length = 0;
uint8_t part_length;
if (service == NULL) {
return 0;
}
str[0] = _mdns_get_service_instance_name(service);
str[1] = service->service;
str[2] = service->proto;
@ -583,6 +595,10 @@ static uint16_t _mdns_append_srv_record(uint8_t * packet, uint16_t * index, mdns
uint16_t record_length = 0;
uint8_t part_length;
if (service == NULL) {
return 0;
}
str[0] = _mdns_get_service_instance_name(service);
str[1] = service->service;
str[2] = service->proto;
@ -1132,6 +1148,7 @@ static bool _mdns_alloc_answer(mdns_out_answer_t ** destnation, uint16_t type, m
}
a->type = type;
a->service = service;
a->custom_service = NULL;
a->bye = bye;
a->flush = flush;
a->next = NULL;