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/*
* Copyright (C) 2016 Intel Corporation
*
* Author: Todor Minchev <todor.minchev@linux.intel.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, or (at your option) any later version, as published by
* the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*/
#include "globals.h"
#include <jansson.h>
#include <string.h>
#include <curl/curl.h>
#include <ctype.h>
#include "codi_launcher.h"
/* execute the request and return an array of json objects */
json_t *request_json(char *request_method, char *url, char *api, char *data)
{
char *in = 0, *j_start;
json_t *root;
json_error_t err;
in = curl_request(request_method, url, api, data);
/* skip the header and move to the json array */
j_start = strchr(in, '[');
root = json_loads(j_start, 0, &err);
free(in);
return root;
}
/* execute the request and return the raw server reply */
char *curl_request(char *http_method, char *url, char *api, char *data)
{
CURL *curl = NULL;
CURLcode res;
struct curl_slist *api_hdr = NULL;
curl_mem_chunk_t srv_reply ;
char *request_str ;
srv_reply.mem = calloc(1, 1) ;
if (srv_reply.mem == NULL)
ERR("ERROR: Unable to allocate memory");
srv_reply.size = 0 ;
curl = curl_easy_init();
if (curl) {
/* check if url is a unix socket*/
if (url[0] == '/') {
/* map the unix socket as a connection endpoint */
curl_easy_setopt(curl, CURLOPT_UNIX_SOCKET_PATH, url);
asprintf(&request_str, "%s%s", "http:", api);
} else {
asprintf(&request_str, "%s%s%s", "http://", url, api);
}
curl_easy_setopt(curl, CURLOPT_URL, request_str);
if (!strcmp(http_method, POST_REQUEST)) {
curl_easy_setopt(curl, CURLOPT_POST, 1L);
api_hdr = curl_slist_append(api_hdr, "Content-Type: application/json");
api_hdr = curl_slist_append(api_hdr, "Expect:");
curl_easy_setopt(curl, CURLOPT_HTTPHEADER, api_hdr);
if (data == NULL)
curl_easy_setopt(curl, CURLOPT_POSTFIELDS, "");
else
curl_easy_setopt(curl, CURLOPT_POSTFIELDS, data);
}
curl_easy_setopt(curl, CURLOPT_HEADER, 1);
curl_easy_setopt(curl, CURLOPT_WRITEDATA, (void *) &srv_reply);
curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, process_srv_reply);
#ifdef DBG
curl_easy_setopt(curl, CURLOPT_VERBOSE, 1);
#endif
res = curl_easy_perform(curl);
if (res != CURLE_OK)
INFO("curl_easy_perform() failed: %s\n", curl_easy_strerror(res));
if (!strcmp(http_method, POST_REQUEST))
curl_slist_free_all(api_hdr);
free(request_str);
curl_easy_cleanup(curl);
}
return srv_reply.mem;
}
size_t process_srv_reply(void *ptr, size_t size, size_t nmemb, void *reply_p)
{
size_t chunk_size = size * nmemb;
curl_mem_chunk_t *mem_chunk = (curl_mem_chunk_t *)reply_p;
/* append chunk_size memory block to the original memory block */
mem_chunk->mem = realloc(mem_chunk->mem, mem_chunk->size + chunk_size + 1);
if (mem_chunk->mem == NULL)
ERR("not enough memory (realloc returned NULL)\n");
INFO("%s", ptr);
/* copy the data into the newly allocated chunk */
memcpy(&(mem_chunk->mem[mem_chunk->size]), ptr, chunk_size);
mem_chunk->size += chunk_size;
mem_chunk->mem[mem_chunk->size] = 0;
return chunk_size;
}
bool is_container_running(char *url, char *cont_name)
{
char *api_str = NULL;
json_t *result;
asprintf(&api_str, RUNNING_NAMED_CONTAINER, cont_name);
result = request_json(GET_REQUEST, url, api_str, NULL);
free(api_str);
if (json_array_size(result)) {
json_decref(result);
return true;
} else {
#ifdef DBG
INFO("Container : %s is not running\n", cont_name);
#endif
json_decref(result);
return false;
}
}
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