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example/sdp_bnep_query: use static buffer for service names

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This commit is contained in:
Matthias Ringwald 2018-11-28 11:07:55 +01:00
parent 9975f1a3b6
commit b85d692e71
1 changed files with 6 additions and 7 deletions
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13
example/sdp_bnep_query.c
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@ -124,7 +124,7 @@ static void packet_handler (uint8_t packet_type, uint16_t channel, uint8_t *pack
}
/* LISTING_END */
static char * get_string_from_data_element(uint8_t * element){
static void get_string_from_data_element(uint8_t * element, uint16_t buffer_size, char * buffer_data){
de_size_t de_size = de_get_size_type(element);
int pos = de_get_header_size(element);
int len = 0;
@ -138,10 +138,9 @@ static char * get_string_from_data_element(uint8_t * element){
default:
break;
}
char * str = (char*)malloc(len+1);
memcpy(str, &element[pos], len);
str[len] ='\0';
return str;
uint16_t bytes_to_copy = btstack_min(buffer_size-1,len);
memcpy(buffer_data, &element[pos], bytes_to_copy);
buffer_data[bytes_to_copy] ='\0';
}
@ -163,7 +162,7 @@ static void handle_sdp_client_query_result(uint8_t packet_type, uint16_t channel
/* LISTING_PAUSE */
des_iterator_t des_list_it;
des_iterator_t prot_it;
char *str;
char str[20];
switch (hci_event_packet_get_type(packet)){
case SDP_EVENT_QUERY_ATTRIBUTE_VALUE:
@ -207,7 +206,7 @@ static void handle_sdp_client_query_result(uint8_t packet_type, uint16_t channel
case 0x0100:
// 0x0101 "Service Description"
case 0x0101:
str = get_string_from_data_element(attribute_value);
get_string_from_data_element(attribute_value, sizeof(str), str);
printf(" ** Attribute 0x%04x: %s\n", sdp_event_query_attribute_byte_get_attribute_id(packet), str);
free(str);
break;