coap_list_t *CACreateNewOptionNode(uint16_t key, uint32_t length, const char *data)
{
OIC_LOG(DEBUG, TAG, "IN");
if (!data)
{
OIC_LOG(ERROR, TAG, "invalid pointer parameter");
return NULL;
}
coap_option *option = coap_malloc(sizeof(coap_option) + length + 1);
if (!option)
{
OIC_LOG(ERROR, TAG, "Out of memory");
return NULL;
}
memset(option, 0, sizeof(coap_option) + length + 1);
COAP_OPTION_KEY(*option) = key;
coap_option_def_t* def = coap_opt_def(key);
if (NULL != def && coap_is_var_bytes(def))
{
if (length > def->max)
{
// make sure we shrink the value so it fits the coap option definition
// by truncating the value, disregard the leading bytes.
OIC_LOG_V(DEBUG, TAG, "Option [%d] data size [%d] shrunk to [%d]",
def->key, length, def->max);
data = &(data[length-def->max]);
length = def->max;
}
// Shrink the encoding length to a minimum size for coap
// options that support variable length encoding.
COAP_OPTION_LENGTH(*option) = coap_encode_var_bytes(
COAP_OPTION_DATA(*option),
coap_decode_var_bytes((unsigned char *)data, length));
}
else
{
COAP_OPTION_LENGTH(*option) = length;
memcpy(COAP_OPTION_DATA(*option), data, length);
}
/* we can pass NULL here as delete function since option is released automatically */
coap_list_t *node = coap_new_listnode(option, NULL);
if (!node)
{
OIC_LOG(ERROR, TAG, "node is NULL");
coap_free(option);
return NULL;
}
OIC_LOG(DEBUG, TAG, "OUT");
return node;
}
coap_list_t *
coap_list_push_first(coap_list_t **list, void *data, void (*delete_func)(void *) ) {
coap_list_t *node;
node = coap_new_listnode(data, delete_func);
if ( !node || !list )
return NULL;
if ( !*list ) {
*list = node;
} else {
node->next = *list;
*list = node;
}
return node;
}
coap_key_t
coap_add_subscription(coap_context_t *context,
coap_subscription_t *subscription) {
coap_list_t *node;
if ( !context || !subscription )
return COAP_INVALID_HASHKEY;
if ( !(node = coap_new_listnode(subscription, NULL)) )
return COAP_INVALID_HASHKEY;
if ( !coap_insert(&context->subscriptions, node, _order_subscription ) ) {
coap_free( node ); /* do not call coap_delete(), so subscription object will survive */
return COAP_INVALID_HASHKEY;
}
return coap_subscription_hash(subscription);
}
static coap_list_t *
new_option_node(unsigned short key, unsigned char *data, unsigned int length) {
coap_option *option;
coap_list_t *node;
option = coap_malloc(sizeof(coap_option) + length);
if ( !option )
return NULL;
COAP_OPTION_KEY(*option) = key;
COAP_OPTION_LENGTH(*option) = length;
memcpy(COAP_OPTION_DATA(*option), data, length);
/* we can pass NULL here as delete function since option is released automatically */
node = coap_new_listnode(option, free);
if (!node)
coap_free(option);
return node;
}
coap_key_t
coap_add_resource(coap_context_t *context, coap_resource_t *resource) {
coap_list_t *node;
if ( !context || !resource )
return COAP_INVALID_HASHKEY;
node = coap_new_listnode(resource, coap_free_resource);
if ( !node )
return COAP_INVALID_HASHKEY;
if ( !context->resources ) {
context->resources = node;
} else {
node->next = context->resources;
context->resources = node;
}
return coap_uri_hash( resource->uri );
}
coap_list_t* CACreateNewOptionNode(const uint16_t key, const uint32_t length, const uint8_t *data)
{
coap_option *option;
coap_list_t *node;
option = coap_malloc(sizeof(coap_option) + length);
if (!option)
goto error;
COAP_OPTION_KEY(*option) = key;
COAP_OPTION_LENGTH(*option) = length;
memcpy(COAP_OPTION_DATA(*option), data, length);
/* we can pass NULL here as delete function since option is released automatically */
node = coap_new_listnode(option, NULL);
if (node)
return node;
error: perror("new_option_node: malloc");
coap_free( option);
return NULL;
}
int
dia_dns_lookup(const char *server, void *dst) {
struct addrinfo *res, *best;
struct addrinfo hints;
static char addrstr[256];
int error;
coap_list_t *node;
dns_cache_t *entry;
if (server && *server)
strcpy (addrstr, server);
else
strcpy (addrstr, "localhost");
// Already in cache ?
for (node = gCache; node; node = node->next) {
entry = (dns_cache_t *)node->data;
if (!strcmp(addrstr, entry->host)) {
rtl_trace (5, "dns_lookup : %s found in cache\n", addrstr);
memcpy (dst, &entry->dst, entry->len);
return entry->len;
}
}
// rtl_trace (5, "dns_lookup : %s not found. search in DNS\n", addrstr);
// DNS lookup
memset ((char *)&hints, 0, sizeof(hints));
hints.ai_socktype = SOCK_DGRAM;
hints.ai_family = AF_UNSPEC;
#ifdef ANDROID
error = getaddrinfo(addrstr, NULL, &hints, &res);
#else
error = getaddrinfo(addrstr, "", &hints, &res);
#endif
//error = getaddrinfo(addrstr, NULL, NULL, &res);
if (error) {
rtl_trace (4, "getaddrinfo: %s\n", gai_strerror(error));
return -1;
}
best = searchBest (res);
if (!best) return 0;
int len = best->ai_addrlen;
memcpy(dst, best->ai_addr, len);
// Create DNS cache entry
entry = (dns_cache_t *)malloc(sizeof(dns_cache_t));
strcpy (entry->host, addrstr);
memcpy(&entry->dst, best->ai_addr, len);
entry->len = len;
char tmp[100];
rtl_trace (5, "dns_lookup : %s found in DNS %s %s\n", addrstr, get_ip_fam(dst), get_ip_str(dst, tmp, sizeof(tmp)));
// Add to the list
node = coap_new_listnode((void *)entry, NULL);
coap_insert( &gCache, node, _order_null);
freeaddrinfo(res);
return len;
}