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mdns: Fix alloc issue if TXT has empty value

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* Original commit: espressif/esp-idf@205f6ba854
This commit is contained in:
David Cermak
2022-01-21 14:18:22 +01:00
committed by suren-gabrielyan-espressif
parent 20e6e9e7fe
commit 9fdbe5f130
1 changed files with 2 additions and 2 deletions
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4
components/mdns/mdns.c
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@ -778,8 +778,8 @@ static uint16_t _mdns_append_txt_record(uint8_t * packet, uint16_t * index, mdns
char * tmp;
mdns_txt_linked_item_t * txt = service->txt;
while (txt) {
uint8_t txt_data_len = strlen(txt->key) + txt->value_len + 1;
tmp = (char *)malloc(txt_data_len);
uint8_t txt_data_len = strlen(txt->key) + txt->value_len + 1 /* + '=' char */;
tmp = (char *)malloc(txt_data_len + 1 /* + '\0' term-char in sprintf() */);
if (tmp) {
int offset = sprintf(tmp, "%s=", txt->key);
memcpy(tmp + offset, txt->value, txt->value_len);