/**
* Converts message to JSON format and sends it to the control socket.
* @param ctlSocket control socket
* @param type type of the message
* @param msg message to send
* @param len length of the message
* @param jsonSupport indicates if JSON format is supported by second side (if not
* then msg is being sent as it is and no JSON converting is done)
* @param jsonConvertType defines how message converting should be handled:
* JSON_SINGLE_VALUE: single key/value pair is being created (using default key)
* with msg as value
* JSON_MULTIPLE_VALUES: multiple key/values pairs are being created using
* keys, keys_delimiters, values and values_delimiters
* params
* JSON_KEY_VALUE_PAIRS: given message contains one or many key/value pairs
* with following syntax: key1: value1
* key2: value2 etc
* @param keys buffer containing keys' values (used only when jsonConvertType is set to
* JSON_MULTIPLE_VALUES)
* @param keysDelimiters delimiters for keys parameter (used only when jsonConvertType is set to
* JSON_MULTIPLE_VALUES)
* @param values buffer containing map values, key-value matching is being done by order in which
* they appear in keys and values params (used only when jsonConvertType is set to
* JSON_MULTIPLE_VALUES)
* @param valuesDelimiters delimiters for values parameter (used only when jsonConvertType is
* set to JSON_MULTIPLE_VALUES)
*
* @return 0 on success, error code otherwise
* Error codes:
* -1 - Cannot write to socket at all
* -2 - Cannot complete writing full message data into socket
* -3 - Cannot write after retries
* -4 - Cannot convert msg to JSON
*
*/
int send_json_msg(int ctlSocket, int type, const char* msg, int len, int jsonSupport,
int jsonConvertType, const char *keys, const char *keysDelimiters,
const char *values, char *valuesDelimiters) {
char* tempBuff;
int ret = 0;
// if JSON is not supported by second side, sends msg as it is
if (!jsonSupport) {
return send_msg(ctlSocket, type, msg, len);
}
switch(jsonConvertType) {
case JSON_SINGLE_VALUE:
tempBuff = json_create_from_single_value(msg); break;
case JSON_MULTIPLE_VALUES:
tempBuff = json_create_from_multiple_values(keys, keysDelimiters,
values, valuesDelimiters); break;
case JSON_KEY_VALUE_PAIRS:
tempBuff = json_create_from_key_value_pairs(msg); break;
default:
return send_msg(ctlSocket, type, msg, len);
}
if (!tempBuff) {
return -4;
}
ret = send_msg(ctlSocket, type, tempBuff, strlen(tempBuff));
free(tempBuff);
return ret;
}
/**
* Converts message to JSON format and sends it to the control Connection.
* @param ctl control Connection
* @param type type of the message
* @param msg message to send
* @param len length of the message
* @param connectionFlags indicates if JSON format is supported by the other side (connectionFlags & JSON_SUPPORT)
* and if websockets are supported by the other side (connectionFlags & WEBSOCKET_SUPPORT)
* It is expected, but not required, that WEBSOCKET_SUPPORT will always include JSON_SUPPORT.
* @param jsonConvertType defines how message converting should be handled:
* JSON_SINGLE_VALUE: single key/value pair is being created (using default key)
* with msg as value
* JSON_MULTIPLE_VALUES: multiple key/values pairs are being created using
* keys, keys_delimiters, values and values_delimiters
* params
* JSON_KEY_VALUE_PAIRS: given message contains one or many key/value pairs
* with following syntax: key1: value1
* key2: value2 etc
* @param keys buffer containing keys' values (used only when jsonConvertType is set to
* JSON_MULTIPLE_VALUES)
* @param keysDelimiters delimiters for keys parameter (used only when jsonConvertType is set to
* JSON_MULTIPLE_VALUES)
* @param values buffer containing map values, key-value matching is being done by order in which
* they appear in keys and values params (used only when jsonConvertType is set to
* JSON_MULTIPLE_VALUES)
* @param valuesDelimiters delimiters for values parameter (used only when jsonConvertType is
* set to JSON_MULTIPLE_VALUES)
*
* @return 0 on success, error code otherwise
* Error codes:
* -1 - Cannot write to socket at all
* -2 - Cannot complete writing full message data into socket
* -3 - Cannot write after retries
* -4 - Cannot convert msg to JSON
*
*/
int send_json_msg_any(Connection* ctl, int type, const char* msg, int len,
int connectionFlags, int jsonConvertType,
const char *keys, const char *keysDelimiters,
const char *values, char *valuesDelimiters) {
char* tempBuff;
int ret = 0;
// if JSON is not supported by second side, sends msg as it is
if (!(connectionFlags & JSON_SUPPORT)) {
if (connectionFlags & WEBSOCKET_SUPPORT) {
return send_websocket_msg(ctl, type, msg, len);
} else {
return send_msg_any(ctl, type, msg, len);
}
}
switch(jsonConvertType) {
case JSON_SINGLE_VALUE:
tempBuff = json_create_from_single_value(msg); break;
case JSON_MULTIPLE_VALUES:
tempBuff = json_create_from_multiple_values(keys, keysDelimiters,
values, valuesDelimiters); break;
case JSON_KEY_VALUE_PAIRS:
tempBuff = json_create_from_key_value_pairs(msg); break;
default:
if (connectionFlags & WEBSOCKET_SUPPORT) {
return send_websocket_msg(ctl, type, msg, len);
} else {
return send_msg_any(ctl, type, msg, len);
}
}
if (!tempBuff) {
return -4;
}
if (connectionFlags & WEBSOCKET_SUPPORT) {
ret = send_websocket_msg(ctl, type, tempBuff, strlen(tempBuff));
} else {
ret = send_msg_any(ctl, type, tempBuff, strlen(tempBuff));
}
free(tempBuff);
return ret;
}
