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Merge pull request #1243 from unmole/coap_fix

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CoAP: Fix handling of Token Length greater than 8
This commit is contained in:
Nicolas Tsiftes 2015-10-23 17:58:15 +02:00
commit 566b251797
1 changed files with 7 additions and 4 deletions
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11
apps/er-coap/er-coap.c
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@ -455,10 +455,8 @@ coap_parse_message(void *packet, uint8_t *data, uint16_t data_len)
>> COAP_HEADER_VERSION_POSITION; >> COAP_HEADER_VERSION_POSITION;
coap_pkt->type = (COAP_HEADER_TYPE_MASK & coap_pkt->buffer[0]) coap_pkt->type = (COAP_HEADER_TYPE_MASK & coap_pkt->buffer[0])
>> COAP_HEADER_TYPE_POSITION; >> COAP_HEADER_TYPE_POSITION;
coap_pkt->token_len = coap_pkt->token_len = (COAP_HEADER_TOKEN_LEN_MASK & coap_pkt->buffer[0])
MIN(COAP_TOKEN_LEN, >> COAP_HEADER_TOKEN_LEN_POSITION;
(COAP_HEADER_TOKEN_LEN_MASK & coap_pkt->
buffer[0]) >> COAP_HEADER_TOKEN_LEN_POSITION);
coap_pkt->code = coap_pkt->buffer[1]; coap_pkt->code = coap_pkt->buffer[1];
coap_pkt->mid = coap_pkt->buffer[2] << 8 | coap_pkt->buffer[3]; coap_pkt->mid = coap_pkt->buffer[2] << 8 | coap_pkt->buffer[3];
@ -467,6 +465,11 @@ coap_parse_message(void *packet, uint8_t *data, uint16_t data_len)
return BAD_REQUEST_4_00; return BAD_REQUEST_4_00;
} }
if(coap_pkt->token_len > COAP_TOKEN_LEN) {
coap_error_message = "Token Length must not be more than 8";
return BAD_REQUEST_4_00;
}
uint8_t *current_option = data + COAP_HEADER_LEN; uint8_t *current_option = data + COAP_HEADER_LEN;
memcpy(coap_pkt->token, current_option, coap_pkt->token_len); memcpy(coap_pkt->token, current_option, coap_pkt->token_len);