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// Written by retoor@molodetz.nl
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// This code defines functions for HTTP requests and structuring tool descriptions and executions in JSON format using the JSON-C library. It uses cURL for HTTP requests.
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// Imports not part of the language itself: JSON-C (json-c/json.h, json-c/json_object.h) and a custom header "http_curl.h"
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// MIT License
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#ifndef R_TOOLS_H
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#define R_TOOLS_H
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#include <json-c/json.h>
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#include <json-c/json_object.h>
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#include <string.h>
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#include "http_curl.h"
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struct json_object *tool_description_http_get();
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struct json_object *tool_description_bash();
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struct json_object *tools_descriptions() {
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struct json_object *root = json_object_new_array();
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json_object_array_add(root, tool_description_http_get());
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json_object_array_add(root, tool_description_bash());
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return root;
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}
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char *tool_function_http_get(char *url) {
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fprintf(stderr, "Tool http_get: %s\n", url);
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return curl_get(url);
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}
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char * tool_function_bash(char * command){
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fprintf(stderr, "Tool bash: %s\n", command);
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FILE *fp;
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char buffer[1024];
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size_t total_size = 0;
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char *output = NULL;
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// Open the command for reading
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fp = popen(command, "r");
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if (fp == NULL) {
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perror("popen failed");
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return strdup("Popen failed!");
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}
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// Read output in chunks
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while (fgets(buffer, sizeof(buffer), fp) != NULL) {
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size_t chunk_size = strlen(buffer);
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char *new_output = realloc(output, total_size + chunk_size + 1);
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if (new_output == NULL) {
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perror("realloc failed");
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free(output);
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pclose(fp);
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return strdup("Failed to allocate memory!");
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}
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output = new_output;
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strcpy(output + total_size, buffer);
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total_size += chunk_size;
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}
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pclose(fp);
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return output;
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}
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struct json_object *tool_description_http_get() {
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struct json_object *root = json_object_new_object();
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json_object_object_add(root, "type", json_object_new_string("function"));
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struct json_object *function = json_object_new_object();
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json_object_object_add(function, "name", json_object_new_string("http_fetch"));
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json_object_object_add(function, "description", json_object_new_string("Get the contents of a URL."));
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struct json_object *parameters = json_object_new_object();
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json_object_object_add(parameters, "type", json_object_new_string("object"));
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struct json_object *properties = json_object_new_object();
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struct json_object *url = json_object_new_object();
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json_object_object_add(url, "type", json_object_new_string("string"));
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json_object_object_add(url, "description", json_object_new_string("Fetch URL contents."));
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json_object_object_add(properties, "url", url);
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json_object_object_add(parameters, "properties", properties);
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struct json_object *required = json_object_new_array();
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json_object_array_add(required, json_object_new_string("url"));
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json_object_object_add(parameters, "required", required);
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json_object_object_add(parameters, "additionalProperties", json_object_new_boolean(0));
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json_object_object_add(function, "parameters", parameters);
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json_object_object_add(function, "strict", json_object_new_boolean(1));
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json_object_object_add(root, "function", function);
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return root;
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}
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struct json_object *tool_description_bash() {
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struct json_object *root = json_object_new_object();
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json_object_object_add(root, "type", json_object_new_string("function"));
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struct json_object *function = json_object_new_object();
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json_object_object_add(function, "name", json_object_new_string("bash_execute"));
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json_object_object_add(function, "description", json_object_new_string("Execute a bash command on user terminal."));
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struct json_object *parameters = json_object_new_object();
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json_object_object_add(parameters, "type", json_object_new_string("object"));
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struct json_object *properties = json_object_new_object();
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struct json_object *url = json_object_new_object();
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json_object_object_add(url, "type", json_object_new_string("string"));
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json_object_object_add(url, "description", json_object_new_string("Bash command to execute."));
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json_object_object_add(properties, "command", url);
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json_object_object_add(parameters, "properties", properties);
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struct json_object *required = json_object_new_array();
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json_object_array_add(required, json_object_new_string("command"));
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json_object_object_add(parameters, "required", required);
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json_object_object_add(parameters, "additionalProperties", json_object_new_boolean(0));
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json_object_object_add(function, "parameters", parameters);
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json_object_object_add(function, "strict", json_object_new_boolean(1));
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json_object_object_add(root, "function", function);
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return root;
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}
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struct json_object *tools_execute(struct json_object *tools_array) {
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struct json_object *tools_result_messages = json_object_new_array();
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int array_len = json_object_array_length(tools_array);
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for (int i = 0; i < array_len; i++) {
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struct json_object *obj = json_object_array_get_idx(tools_array, i);
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struct json_object *tool_result = json_object_new_object();
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json_object_object_add(tool_result, "tool_call_id",
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json_object_new_string(json_object_get_string(
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json_object_object_get(obj, "id"))));
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json_object_object_add(tool_result, "role", json_object_new_string("tool"));
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struct json_object *type_obj;
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if (json_object_object_get_ex(obj, "type", &type_obj)) {
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if (strcmp(json_object_get_string(type_obj), "function")) {
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continue;
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}
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}
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struct json_object *function_obj;
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if (json_object_object_get_ex(obj, "function", &function_obj)) {
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struct json_object *name_obj;
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char *function_name = NULL;
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if (json_object_object_get_ex(function_obj, "name", &name_obj)) {
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function_name = (char *)json_object_get_string(name_obj);
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}
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if (!strcmp(function_name, "bash_execute")) {
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struct json_object *arguments_obj;
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if (json_object_object_get_ex(function_obj, "arguments", &arguments_obj)) {
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struct json_object *arguments = json_tokener_parse(json_object_get_string(arguments_obj));
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struct json_object *url_obj;
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if (json_object_object_get_ex(arguments, "command", &url_obj)) {
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char *url = (char *)json_object_get_string(url_obj);
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char *http_result = tool_function_bash(url);
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json_object_object_add(tool_result, "content", json_object_new_string(http_result));
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}
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}
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}
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if (!strcmp(function_name, "http_fetch")) {
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struct json_object *arguments_obj;
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if (json_object_object_get_ex(function_obj, "arguments", &arguments_obj)) {
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struct json_object *arguments = json_tokener_parse(json_object_get_string(arguments_obj));
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struct json_object *url_obj;
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if (json_object_object_get_ex(arguments, "url", &url_obj)) {
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char *url = (char *)json_object_get_string(url_obj);
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char *http_result = tool_function_http_get(url);
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json_object_object_add(tool_result, "content", json_object_new_string(http_result));
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}
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}
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}
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json_object_array_add(tools_result_messages, tool_result);
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}
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}
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return tools_result_messages;
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}
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#endif
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