static smcp_status_t
request_handler(void* context) {
/* This will respond to every GET request to `/hello-world' with
** "Hello world!". Everyone else gets a 4.04 Not Found. */
printf("Got a request!\n");
if(smcp_inbound_get_code() != COAP_METHOD_GET) {
return SMCP_STATUS_NOT_IMPLEMENTED;
}
while(smcp_inbound_peek_option(NULL, NULL) != COAP_OPTION_URI_PATH)
if(smcp_inbound_next_option(NULL, NULL) == COAP_OPTION_INVALID)
break;
if(smcp_inbound_option_strequal(COAP_OPTION_URI_PATH, "hello-world")) {
smcp_outbound_begin_response(COAP_RESULT_205_CONTENT);
smcp_outbound_add_option_uint(
COAP_OPTION_CONTENT_TYPE,
COAP_CONTENT_TYPE_TEXT_PLAIN
);
smcp_outbound_append_content("Hello world!", SMCP_CSTR_LEN);
return smcp_outbound_send();
}
return SMCP_STATUS_NOT_FOUND;
}
smcp_status_t
plugtest_separate_async_resend_response(void* context)
{
smcp_status_t ret = 0;
struct smcp_async_response_s* async_response = (void*)context;
#if !SMCP_AVOID_PRINTF || VERBOSE_DEBUG
printf("Resending async response. . . %p\n",async_response);
#endif
ret = smcp_outbound_begin_async_response(COAP_RESULT_205_CONTENT,async_response);
require_noerr(ret,bail);
ret = smcp_outbound_add_option_uint(COAP_OPTION_CONTENT_TYPE, COAP_CONTENT_TYPE_TEXT_PLAIN);
require_noerr(ret,bail);
ret = smcp_outbound_append_content("This was an asynchronous response!",SMCP_CSTR_LEN);
require_noerr(ret,bail);
ret = smcp_outbound_send();
require_noerr(ret,bail);
bail:
return ret;
}
smcp_status_t
smcp_outbound_set_var_content_unsigned_long_int(unsigned long int v) {
smcp_outbound_add_option_uint(
COAP_OPTION_CONTENT_TYPE,
SMCP_CONTENT_TYPE_APPLICATION_FORM_URLENCODED
);
#if SMCP_AVOID_PRINTF
{
char nstr[12];
smcp_outbound_append_content("v=", SMCP_CSTR_LEN);
return smcp_outbound_append_content(uint32_to_dec_cstr(nstr,v), SMCP_CSTR_LEN);
}
#else
return smcp_outbound_set_content_formatted_const("v=%ul",v);
#endif
}
static smcp_status_t
request_handler(void* context)
{
/* This request handler will respond to every GET request with "Hello world!".
* It isn't usually a good idea to (almost) completely ignore the actual
* request, but since this is just an example we can get away with it.
* We do more processing on the request in the other examples. */
printf("Got a request!\n");
// Only handle GET requests for now. Returning SMCP_STATUS_NOT_IMPLEMENTED
// here without sending a response will cause us to automatically
// send a METHOD_NOT_IMPLEMENTED response.
if(smcp_inbound_get_code() != COAP_METHOD_GET) {
return SMCP_STATUS_NOT_IMPLEMENTED;
}
// Begin describing the response message. (2.05 CONTENT,
// in this case)
smcp_outbound_begin_response(COAP_RESULT_205_CONTENT);
// Add an option describing the content type as plaintext.
smcp_outbound_add_option_uint(
COAP_OPTION_CONTENT_TYPE,
COAP_CONTENT_TYPE_TEXT_PLAIN
);
// Set the content of our response to be "Hello world!".
smcp_outbound_append_content("Hello world!", SMCP_CSTR_LEN);
// Send the response we hae created, passing the return value
// to our caller.
return smcp_outbound_send();
}
smcp_status_t
smcp_outbound_quick_response(coap_code_t code, const char* body) {
smcp_outbound_begin_response(code);
if (body) {
smcp_outbound_append_content(body, SMCP_CSTR_LEN);
}
return smcp_outbound_send();
}
static smcp_status_t
resend_async_response(void* context) {
smcp_status_t ret = 0;
smcp_curl_request_t request = (smcp_curl_request_t)context;
struct smcp_async_response_s* async_response = &request->async_response;
coap_size_t len = (coap_size_t)request->content_len;
if(len>512) {
len = 512;
}
{
uint16_t code;
curl_easy_getinfo(request->curl, CURLINFO_RESPONSE_CODE,&code);
code = http_to_coap_code(code);
ret = smcp_outbound_begin_async_response(code,async_response);
require_noerr(ret,bail);
}
{
const char* content_type_string;
curl_easy_getinfo(request->curl, CURLINFO_CONTENT_TYPE,&content_type_string);
coap_content_type_t content_type = coap_content_type_from_cstr(content_type_string);
if(content_type!=COAP_CONTENT_TYPE_UNKNOWN) {
ret = smcp_outbound_add_option_uint(COAP_OPTION_CONTENT_TYPE, content_type);
check_noerr(ret);
} else {
DEBUG_PRINTF("Unrecognised content-type: %s",content_type_string);
}
}
ret = smcp_outbound_append_content(request->content, len);
require_noerr(ret,bail);
ret = smcp_outbound_send();
require_noerr(ret,bail);
if(ret) {
assert_printf(
"smcp_outbound_send() returned error %d(%s).\n",
ret,
smcp_status_to_cstr(ret)
);
goto bail;
}
bail:
return ret;
}
static smcp_status_t
request_handler_get_listing_(
smcp_group_mgr_t self
) {
smcp_status_t ret = 0;
int i;
char name_str[3] = { };
// Fetching the group table.
ret = smcp_outbound_begin_response(COAP_RESULT_205_CONTENT);
require_noerr(ret, bail);
ret = smcp_outbound_add_option_uint(COAP_OPTION_CONTENT_TYPE, COAP_CONTENT_TYPE_APPLICATION_LINK_FORMAT);
require_noerr(ret, bail);
for (i = 0; i < SMCP_CONF_MAX_GROUPS; i++) {
if (!self->group_table[i].in_use) {
continue;
}
name_str[0] = get_hex_char(i >> 4);
name_str[1] = get_hex_char(i >> 0);
smcp_outbound_append_content("<", SMCP_CSTR_LEN);
smcp_outbound_append_content(name_str, SMCP_CSTR_LEN);
smcp_outbound_append_content("/>;ct=40;obs,", SMCP_CSTR_LEN);
#if SMCP_ADD_NEWLINES_TO_LIST_OUTPUT
smcp_outbound_append_content("\n", SMCP_CSTR_LEN);
#endif
}
ret = smcp_outbound_send();
bail:
return ret;
}
static smcp_status_t
request_handler(void* context) {
/* This will respond to every GET request to `/hello-world' with
** "Hello world!". Everyone else gets a 4.04 Not Found. */
printf("Got a request!\n");
// Only handle GET requests for now. Returning SMCP_STATUS_NOT_IMPLEMENTED
// here without sending a response will cause us to automatically
// send a METHOD_NOT_IMPLEMENTED response.
if(smcp_inbound_get_code() != COAP_METHOD_GET) {
return SMCP_STATUS_NOT_IMPLEMENTED;
}
// Skip to the URI path option
while(smcp_inbound_peek_option(NULL, NULL) != COAP_OPTION_URI_PATH)
if(smcp_inbound_next_option(NULL, NULL) == COAP_OPTION_INVALID)
break;
// If our URI path matches what we are looking for...
if(smcp_inbound_option_strequal(COAP_OPTION_URI_PATH, "hello-world")) {
// Begin describing the response message. (2.05 CONTENT,
// in this case)
smcp_outbound_begin_response(COAP_RESULT_205_CONTENT);
// Add an option describing the content type as plaintext.
smcp_outbound_add_option_uint(
COAP_OPTION_CONTENT_TYPE,
COAP_CONTENT_TYPE_TEXT_PLAIN
);
// Set the content of our response to be "Hello world!".
smcp_outbound_append_content("Hello world!", SMCP_CSTR_LEN);
// Send the response we hae created, passing the return value
// to our caller.
return smcp_outbound_send();
}
return SMCP_STATUS_NOT_FOUND;
}
smcp_status_t
smcp_variable_node_request_handler(
smcp_variable_node_t node
) {
// TODO: Make this function use less stack space!
smcp_method_t method = smcp_inbound_get_code();
smcp_status_t ret = SMCP_STATUS_NOT_FOUND;
SMCP_NON_RECURSIVE coap_content_type_t content_type;
SMCP_NON_RECURSIVE char* content_ptr;
SMCP_NON_RECURSIVE size_t content_len;
SMCP_NON_RECURSIVE char buffer[SMCP_VARIABLE_MAX_VALUE_LENGTH+1];
SMCP_NON_RECURSIVE coap_content_type_t reply_content_type;
uint8_t key_index = BAD_KEY_INDEX;
size_t value_len;
bool needs_prefix = true;
char* prefix_name = "";
content_type = smcp_inbound_get_content_type();
content_ptr = (char*)smcp_inbound_get_content_ptr();
content_len = smcp_inbound_get_content_len();
reply_content_type = SMCP_CONTENT_TYPE_APPLICATION_FORM_URLENCODED;
require(node, bail);
// Look up the key index.
if(smcp_inbound_peek_option(NULL,&value_len)==COAP_OPTION_URI_PATH) {
if(!value_len) {
needs_prefix = false;
smcp_inbound_next_option(NULL,NULL);
} else for(key_index=0;key_index<BAD_KEY_INDEX;key_index++) {
ret = node->func(node,SMCP_VAR_GET_KEY,key_index,buffer);
require_action(ret==0,bail,ret=SMCP_STATUS_NOT_FOUND);
if(smcp_inbound_option_strequal(COAP_OPTION_URI_PATH, buffer)) {
smcp_inbound_next_option(NULL,NULL);
break;
}
}
}
{
coap_option_key_t key;
const uint8_t* value;
while((key=smcp_inbound_next_option(&value, &value_len))!=COAP_OPTION_INVALID) {
require_action(key!=COAP_OPTION_URI_PATH,bail,ret=SMCP_STATUS_NOT_FOUND);
if(key==COAP_OPTION_URI_QUERY) {
if( method == COAP_METHOD_POST
&& value_len>=2
&& strhasprefix_const((const char*)value,"v=")
) {
DEBUG_PRINTF("variable-node: value is in the query.");
content_type = COAP_CONTENT_TYPE_TEXT_PLAIN;
content_ptr = (char*)value+2;
content_len = value_len-2;
}
// } else if(key==COAP_OPTION_ETAG) {
// } else if(key==COAP_OPTION_IF_MATCH) {
// } else if(key==COAP_OPTION_IF_NONE_MATCH) {
} else if(key==COAP_OPTION_ACCEPT) {
reply_content_type = 0;
if(value_len==1)
reply_content_type = value[0];
else {
// Unsupported type.
}
} else if(COAP_OPTION_IS_CRITICAL(key)) {
ret=SMCP_STATUS_BAD_OPTION;
assert_printf("Unrecognized option %d, \"%s\"",
key,
coap_option_key_to_cstr(key, false)
);
goto bail;
}
}
}
// TODO: Implement me!
if(method == COAP_METHOD_PUT)
method = COAP_METHOD_POST;
if(method == COAP_METHOD_POST) {
require_action(!smcp_inbound_is_dupe(),bail,ret=0);
require_action(
key_index!=BAD_KEY_INDEX,
bail,
ret=SMCP_STATUS_NOT_ALLOWED
);
if(content_type==SMCP_CONTENT_TYPE_APPLICATION_FORM_URLENCODED) {
char* key = NULL;
char* value = NULL;
content_len = 0;
while(
url_form_next_value(
(char**)&content_ptr,
&key,
&value
)
&& key
&& value
) {
if(strequal_const(key, "v")) {
content_ptr = value;
content_len = strlen(value);
break;
}
}
}
// Make sure our content is zero terminated.
((char*)content_ptr)[content_len] = 0;
ret = node->func(node,SMCP_VAR_SET_VALUE,key_index,(char*)content_ptr);
require_noerr(ret,bail);
ret = smcp_outbound_begin_response(COAP_RESULT_204_CHANGED);
require_noerr(ret,bail);
ret = smcp_outbound_send();
require_noerr(ret,bail);
} else if(method == COAP_METHOD_GET) {
if(key_index==BAD_KEY_INDEX) {
char* content_end_ptr;
ret = smcp_outbound_begin_response(COAP_RESULT_205_CONTENT);
require_noerr(ret,bail);
smcp_outbound_add_option_uint(COAP_OPTION_CONTENT_TYPE, COAP_CONTENT_TYPE_APPLICATION_LINK_FORMAT);
ret = smcp_observable_update(&node->observable, SMCP_OBSERVABLE_BROADCAST_KEY);
check_string(ret==0,smcp_status_to_cstr(ret));
content_ptr = smcp_outbound_get_content_ptr(&content_len);
content_end_ptr = content_ptr+content_len;
for(key_index=0;key_index<BAD_KEY_INDEX;key_index++) {
ret = node->func(node,SMCP_VAR_GET_KEY,key_index,buffer);
if(ret) break;
if(content_ptr+2>=content_end_ptr) {
// No more room for content.
break;
}
*content_ptr++ = '<';
if(needs_prefix) {
content_ptr += url_encode_cstr(content_ptr, prefix_name, (content_end_ptr-content_ptr)-1);
content_ptr = stpncpy(content_ptr,"/",MIN(1,(content_end_ptr-content_ptr)-1));
}
content_ptr += url_encode_cstr(content_ptr, buffer, (content_end_ptr-content_ptr)-1);
*content_ptr++ = '>';
ret = node->func(node,SMCP_VAR_GET_VALUE,key_index,buffer);
if(content_ptr+4>=content_end_ptr) {
// No more room for content.
break;
}
if(!ret) {
strcpy(content_ptr,";v=");
content_ptr += 3;
content_ptr += quoted_cstr(content_ptr, buffer, (content_end_ptr-content_ptr)-1);
}
ret = node->func(node,SMCP_VAR_GET_LF_TITLE,key_index,buffer);
if(content_ptr+8>=content_end_ptr) {
// No more room for content.
break;
}
if(!ret) {
strcpy(content_ptr,";title=");
content_ptr += 7;
content_ptr += quoted_cstr(content_ptr, buffer, (content_end_ptr-content_ptr)-1);
}
// Observation flag
if(0==node->func(node,SMCP_VAR_GET_OBSERVABLE,key_index,NULL)) {
content_ptr = stpncpy(content_ptr,";obs",MIN(4,(content_end_ptr-content_ptr)-1));
}
*content_ptr++ = ',';
}
ret = smcp_outbound_set_content_len(content_len-(content_end_ptr-content_ptr));
require_noerr(ret,bail);
ret = smcp_outbound_send();
} else {
size_t replyContentLength = 0;
char *replyContent;
ret = smcp_outbound_begin_response(COAP_RESULT_205_CONTENT);
require_noerr(ret,bail);
if(0==node->func(node,SMCP_VAR_GET_OBSERVABLE,key_index,buffer)) {
ret = smcp_observable_update(&node->observable, key_index);
check_string(ret==0,smcp_status_to_cstr(ret));
}
if(reply_content_type == SMCP_CONTENT_TYPE_APPLICATION_FORM_URLENCODED) {
uint32_t etag;
if(0==node->func(node,SMCP_VAR_GET_MAX_AGE,key_index,buffer)) {
#if HAVE_STRTOL
uint32_t max_age = strtol(buffer,NULL,0)&0xFFFFFF;
#else
uint32_t max_age = atoi(buffer)&0xFFFFFF;
#endif
smcp_outbound_add_option_uint(COAP_OPTION_MAX_AGE, max_age);
}
ret = node->func(node,SMCP_VAR_GET_VALUE,key_index,buffer);
require_noerr(ret,bail);
fasthash_start(0);
fasthash_feed((const uint8_t*)buffer,strlen(buffer));
etag = fasthash_finish_uint32();
smcp_outbound_add_option_uint(COAP_OPTION_CONTENT_TYPE, SMCP_CONTENT_TYPE_APPLICATION_FORM_URLENCODED);
smcp_outbound_add_option_uint(COAP_OPTION_ETAG, etag);
replyContent = smcp_outbound_get_content_ptr(&replyContentLength);
*replyContent++ = 'v';
*replyContent++ = '=';
replyContentLength -= 2;
replyContentLength = url_encode_cstr(
replyContent,
buffer,
replyContentLength
);
ret = smcp_outbound_set_content_len(replyContentLength+2);
} else {
ret = node->func(node,SMCP_VAR_GET_VALUE,key_index,buffer);
require_noerr(ret,bail);
ret = smcp_outbound_append_content(buffer, SMCP_CSTR_LEN);
}
require_noerr(ret,bail);
ret = smcp_outbound_send();
}
} else {
ret = smcp_default_request_handler(
(void*)node
);
check_string(ret == SMCP_STATUS_OK, smcp_status_to_cstr(ret));
}
bail:
check_string(ret == SMCP_STATUS_OK, smcp_status_to_cstr(ret));
return ret;
}
static smcp_status_t
request_handler_new_group_(
smcp_group_mgr_t self
) {
smcp_status_t ret = SMCP_STATUS_OK;
coap_content_type_t content_type;
coap_size_t content_len;
char* fqdn = NULL;
char* addr_cstr = NULL;
smcp_sockaddr_t saddr = { };
char* content_ptr = NULL;
char* key = NULL;
char* value = NULL;
smcp_group_t group = NULL;
char name_str[3] = { };
content_type = smcp_inbound_get_content_type();
content_ptr = (char*)smcp_inbound_get_content_ptr();
content_len = smcp_inbound_get_content_len();
switch (content_type) {
case COAP_CONTENT_TYPE_UNKNOWN:
case COAP_CONTENT_TYPE_TEXT_PLAIN:
case SMCP_CONTENT_TYPE_APPLICATION_FORM_URLENCODED:
content_len = 0;
while(
url_form_next_value(
(char**)&content_ptr,
&key,
&value
)
&& key
&& value
) {
if (strequal_const(key, names[I_FQDN])) {
fqdn = value;
DEBUG_PRINTF("new_group: fqdn=\"%s\"", value);
} else if (strequal_const(key, names[I_ADDR])) {
addr_cstr = value;
DEBUG_PRINTF("new_group: addr=\"%s\"", value);
}
}
break;
default:
return smcp_outbound_quick_response(HTTP_RESULT_CODE_UNSUPPORTED_MEDIA_TYPE, NULL);
break;
}
if (NULL == addr_cstr) {
require_action(NULL != fqdn, bail, ret = SMCP_STATUS_INVALID_ARGUMENT);
addr_cstr = fqdn;
} else if (NULL == fqdn) {
fqdn = addr_cstr;
}
smcp_plat_lookup_hostname(addr_cstr, &saddr, SMCP_LOOKUP_HOSTNAME_FLAG_DEFAULT);
group = smcp_group_mgr_new_group(
self,
fqdn,
&saddr.smcp_addr,
0
);
if (!group) {
return smcp_outbound_quick_response(COAP_RESULT_400_BAD_REQUEST, "(400) Failed to create group");
}
// Default to enabled.
smcp_group_set_enabled(group, true);
name_str[0] = get_hex_char(group->index >> 4);
name_str[1] = get_hex_char(group->index >> 0);
smcp_outbound_begin_response(COAP_RESULT_201_CREATED);
smcp_outbound_add_option(COAP_OPTION_LOCATION_PATH, name_str, SMCP_CSTR_LEN);
smcp_outbound_append_content(name_str, SMCP_CSTR_LEN);
smcp_outbound_send();
bail:
return ret;
}