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example/panu_demo: use static buffer for service names

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This commit is contained in:
Matthias Ringwald 2018-11-28 11:06:11 +01:00
parent 76780d6ce5
commit 9975f1a3b6
1 changed files with 6 additions and 7 deletions
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13
example/panu_demo.c
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@ -114,7 +114,7 @@ static void panu_setup(void){
/* LISTING_END */ /* LISTING_END */
// PANU client routines // PANU client routines
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); de_size_t de_size = de_get_size_type(element);
int pos = de_get_header_size(element); int pos = de_get_header_size(element);
int len = 0; int len = 0;
@ -128,10 +128,9 @@ static char * get_string_from_data_element(uint8_t * element){
default: default:
break; break;
} }
char * str = (char*)malloc(len+1); uint16_t bytes_to_copy = btstack_min(buffer_size-1,len);
memcpy(str, &element[pos], len); memcpy(buffer_data, &element[pos], bytes_to_copy);
str[len] ='\0'; buffer_data[bytes_to_copy] ='\0';
return str;
} }
@ -160,7 +159,7 @@ static void handle_sdp_client_query_result(uint8_t packet_type, uint16_t channel
des_iterator_t des_list_it; des_iterator_t des_list_it;
des_iterator_t prot_it; des_iterator_t prot_it;
char *str; char str[20];
switch (hci_event_packet_get_type(packet)){ switch (hci_event_packet_get_type(packet)){
case SDP_EVENT_QUERY_ATTRIBUTE_VALUE: case SDP_EVENT_QUERY_ATTRIBUTE_VALUE:
@ -198,7 +197,7 @@ static void handle_sdp_client_query_result(uint8_t packet_type, uint16_t channel
break; break;
case 0x0100: case 0x0100:
case 0x0101: case 0x0101:
str = get_string_from_data_element(attribute_value); get_string_from_data_element(attribute_value, sizeof(str), str);
printf("SDP Attribute: 0x%04x: %s\n", sdp_event_query_attribute_byte_get_attribute_id(packet), str); printf("SDP Attribute: 0x%04x: %s\n", sdp_event_query_attribute_byte_get_attribute_id(packet), str);
free(str); free(str);
break; break;