// FIXME, if this looked in the table at the path before the method then
// it could more easily return 405 errors
int coap_handle_req(coap_rw_buffer_t *scratch, const coap_packet_t *inpkt, coap_packet_t *outpkt)
{
const coap_option_t *opt;
uint8_t count;
int i;
const coap_endpoint_t *ep = endpoints;
while(NULL != ep->handler)
{
if (ep->method != inpkt->hdr.code)
goto next;
if (NULL != (opt = coap_findOptions(inpkt, COAP_OPTION_URI_PATH, &count)))
{
if (count != ep->path->count)
goto next;
for (i=0;i<count;i++)
{
if (opt[i].buf.len != strlen(ep->path->elems[i]))
goto next;
if (0 != memcmp(ep->path->elems[i], opt[i].buf.p, opt[i].buf.len))
goto next;
}
// match!
return ep->handler(scratch, inpkt, outpkt, inpkt->hdr.id[0], inpkt->hdr.id[1]);
}
next:
ep++;
}
coap_make_response(scratch, outpkt, NULL, 0, inpkt->hdr.id[0], inpkt->hdr.id[1], COAP_RSPCODE_NOT_FOUND, COAP_CONTENTTYPE_NONE);
return 0;
}
static int handle_get_variable(const coap_endpoint_t *ep, coap_rw_buffer_t *scratch, const coap_packet_t *inpkt, coap_packet_t *outpkt, uint8_t id_hi, uint8_t id_lo)
{
const coap_option_t *opt;
uint8_t count;
int n;
if (NULL != (opt = coap_findOptions(inpkt, COAP_OPTION_URI_PATH, &count)))
{
if ((count != ep->path->count ) && (count != ep->path->count + 1)) // +1 for /f/[function], /v/[variable]
{
NODE_DBG("should never happen.\n");
goto end;
}
if (count == ep->path->count + 1)
{
coap_luser_entry *h = ep->user_entry->next; // ->next: skip the first entry(head)
while(NULL != h){
if (opt[count-1].buf.len != c_strlen(h->name))
{
h = h->next;
continue;
}
if (0 == c_memcmp(h->name, opt[count-1].buf.p, opt[count-1].buf.len))
{
NODE_DBG("/v1/v/");
NODE_DBG_((char *)h->name);
NODE_DBG(" match.\n");
if(h->L == NULL)
return coap_make_response(scratch, outpkt, NULL, 0, id_hi, id_lo, &inpkt->tok, COAP_RSPCODE_NOT_FOUND, COAP_CONTENTTYPE_NONE);
if(c_strlen(h->name))
{
n = lua_gettop(h->L);
lua_getglobal(h->L, h->name);
if (!lua_isnumber(h->L, -1)) {
NODE_DBG ("should be a number.\n");
lua_settop(h->L, n);
return coap_make_response(scratch, outpkt, NULL, 0, id_hi, id_lo, &inpkt->tok, COAP_RSPCODE_NOT_FOUND, COAP_CONTENTTYPE_NONE);
} else {
const char *res = lua_tostring(h->L,-1);
lua_settop(h->L, n);
return coap_make_response(scratch, outpkt, (const uint8_t *)res, c_strlen(res), id_hi, id_lo, &inpkt->tok, COAP_RSPCODE_CONTENT, COAP_CONTENTTYPE_TEXT_PLAIN);
}
}
} else {
h = h->next;
}
}
}else{
NODE_DBG("/v1/v match.\n");
goto end;
}
}
NODE_DBG("none match.\n");
end:
return coap_make_response(scratch, outpkt, NULL, 0, id_hi, id_lo, &inpkt->tok, COAP_RSPCODE_CONTENT, COAP_CONTENTTYPE_TEXT_PLAIN);
}
static int handle_post_function(const coap_endpoint_t *ep, coap_rw_buffer_t *scratch, const coap_packet_t *inpkt, coap_packet_t *outpkt, uint8_t id_hi, uint8_t id_lo)
{
const coap_option_t *opt;
uint8_t count;
int n;
if (NULL != (opt = coap_findOptions(inpkt, COAP_OPTION_URI_PATH, &count)))
{
if ((count != ep->path->count ) && (count != ep->path->count + 1)) // +1 for /f/[function], /v/[variable]
{
NODE_DBG("should never happen.\n");
goto end;
}
if (count == ep->path->count + 1)
{
coap_luser_entry *h = ep->user_entry->next; // ->next: skip the first entry(head)
while(NULL != h){
if (opt[count-1].buf.len != c_strlen(h->name))
{
h = h->next;
continue;
}
if (0 == c_memcmp(h->name, opt[count-1].buf.p, opt[count-1].buf.len))
{
NODE_DBG("/v1/f/");
NODE_DBG_((char *)h->name);
NODE_DBG(" match.\n");
if(h->L == NULL)
return coap_make_response(scratch, outpkt, NULL, 0, id_hi, id_lo, &inpkt->tok, COAP_RSPCODE_NOT_FOUND, COAP_CONTENTTYPE_NONE);
if(c_strlen(h->name))
{
n = lua_gettop(h->L);
lua_getglobal(h->L, h->name);
if (lua_type(h->L, -1) != LUA_TFUNCTION) {
NODE_DBG ("should be a function\n");
lua_settop(h->L, n);
return coap_make_response(scratch, outpkt, NULL, 0, id_hi, id_lo, &inpkt->tok, COAP_RSPCODE_NOT_FOUND, COAP_CONTENTTYPE_NONE);
} else {
lua_pushlstring(h->L, inpkt->payload.p, inpkt->payload.len); // make sure payload.p is filled with '\0' after payload.len, or use lua_pushlstring
lua_call(h->L, 1, 1);
if (!lua_isnil(h->L, -1)){ /* get return? */
if( lua_isstring(h->L, -1) ) // deal with the return string
{
size_t len = 0;
const char *ret = luaL_checklstring( h->L, -1, &len );
if(len > MAX_PAYLOAD_SIZE){
lua_settop(h->L, n);
luaL_error( h->L, "return string:<MAX_PAYLOAD_SIZE" );
return coap_make_response(scratch, outpkt, NULL, 0, id_hi, id_lo, &inpkt->tok, COAP_RSPCODE_NOT_FOUND, COAP_CONTENTTYPE_NONE);
}
NODE_DBG_((char *)ret);
NODE_DBG("\n");
lua_settop(h->L, n);
return coap_make_response(scratch, outpkt, ret, len, id_hi, id_lo, &inpkt->tok, COAP_RSPCODE_CONTENT, COAP_CONTENTTYPE_TEXT_PLAIN);
}
} else {
lua_settop(h->L, n);
return coap_make_response(scratch, outpkt, NULL, 0, id_hi, id_lo, &inpkt->tok, COAP_RSPCODE_CONTENT, COAP_CONTENTTYPE_TEXT_PLAIN);
}
}
}
} else {
h = h->next;
}
}
}else{
NODE_DBG("/v1/f match.\n");
goto end;
}
}
NODE_DBG("none match.\n");
end:
return coap_make_response(scratch, outpkt, NULL, 0, id_hi, id_lo, &inpkt->tok, COAP_RSPCODE_NOT_FOUND, COAP_CONTENTTYPE_NONE);
}
