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#ifndef ICCLIENT_REQUEST_H
#define ICCLIENT_REQUEST_H
#if defined __ANDROID__ && defined DEBUG
#include <android/log.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <string.h>
#ifndef __EMSCRIPTEN__
#include <curl/curl.h>
#endif
#include "icclient/typedefs.h"
struct icclient_request_data {
size_t num_pairs;
struct icclient_request_pair {
const char *key;
const char *value;
} pairs[16];
};
#ifdef __EMSCRIPTEN__
extern emscripten_fetch_attr_t attr;
#else
extern CURL *curl;
extern char *server_url;
#endif
inline void icclient_request_init(const char *url, const char *certificate)
{
#ifdef __EMSCRIPTEN__
emscripten_fetch_attr_init(&attr);
attr.attributes = EMSCRIPTEN_FETCH_LOAD_TO_MEMORY;
#else
curl_global_init(CURL_GLOBAL_SSL);
curl = curl_easy_init();
if (curl) {
curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1L);
curl_easy_setopt(curl, CURLOPT_COOKIEFILE, "");
if (certificate)
curl_easy_setopt(curl, CURLOPT_CAINFO, certificate);
#ifdef DEBUG
curl_easy_setopt(curl, CURLOPT_VERBOSE, 1L);
#endif
size_t length = strlen(url);
size_t append = !(url[length - 1] == '/');
server_url = malloc(length + append + 1);
strcpy(server_url, url);
if (append)
strcat(server_url, "/");
}
#endif
}
inline void request(icclient_handler writefunction, void *writedata, struct icclient_request_data *body, char *fmt, ...)
{
va_list ap;
char *p, *sval;
unsigned int ival;
size_t length =
#ifndef __EMSCRIPTEN__
strlen(server_url) +
#endif
strlen(fmt);
va_start(ap, fmt);
for (p = fmt; *p; p++) {
if (*p != '%')
continue;
switch(*++p) {
case 's':
sval = va_arg(ap, char *);
length += strlen(sval) - 2;
break;
case 'd':
ival = va_arg(ap, unsigned int);
do {
length++;
} while ((ival /= 10));
length -= 2;
break;
default:
break;
}
}
va_end(ap);
char url[length + 1];
#ifdef __EMSCRIPTEN__
memset(url, 0, length + 1);
#else
strcpy(url, server_url);
#endif
va_start(ap, fmt);
for (p = fmt; *p; p++) {
if (*p != '%')
continue;
switch(*++p) {
case 's':
sval = va_arg(ap, char *);
strcat(url, sval);
break;
case 'd':
ival = va_arg(ap, unsigned int);
sprintf(url, "%s%d", url, ival);
break;
default:
break;
}
}
va_end(ap);
#ifdef __EMSCRIPTEN__
attr.onsuccess = writefunction;
if (writedata)
attr.userData = writedata;
strcpy(attr.requestMethod, "GET");
emscripten_fetch(&attr, url);
#else
curl_easy_setopt(curl, CURLOPT_URL, url);
curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, writefunction);
if (writedata)
curl_easy_setopt(curl, CURLOPT_WRITEDATA, writedata);
else
curl_easy_setopt(curl, CURLOPT_WRITEDATA, stdout);
struct curl_httppost *post, *last = NULL;
if (body) {
for (size_t i = 0; i < body->num_pairs; i++) {
struct icclient_request_pair pair = body->pairs[i];
if (!pair.value)
continue;
curl_formadd(&post, &last,
CURLFORM_COPYNAME, pair.key,
CURLFORM_PTRCONTENTS, pair.value,
CURLFORM_END);
}
last = NULL;
curl_easy_setopt(curl, CURLOPT_HTTPPOST, post);
} else
curl_easy_setopt(curl, CURLOPT_HTTPGET, 1L);
#ifdef DEBUG
CURLcode res =
#endif
curl_easy_perform(curl);
if (post)
curl_formfree(post);
#ifdef DEBUG
if (res != CURLE_OK) {
const char *error = curl_easy_strerror(res);
#ifdef __ANDROID__
__android_log_print(ANDROID_LOG_ERROR, "libicclient.so", "%s: %s", __func__, error);
#else
fprintf(stderr, "%s: %s\n", __func__, error);
#endif
#endif
}
#endif
}
inline void icclient_request_cleanup()
{
#ifndef __EMSCRIPTEN__
if (curl) {
free(server_url);
curl_easy_cleanup(curl);
}
curl_global_cleanup();
#endif
}
#endif
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