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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>
#include "icclient/typedefs.h"
struct body {
size_t num_pairs;
struct pair {
const char *key;
const char *value;
} pairs[16];
};
#ifdef __EMSCRIPTEN__
extern emscripten_fetch_attr_t attr;
#else
extern CURL *curl;
extern char *sampleurl;
size_t append(char *, size_t, size_t, icclient_response *);
#endif
static inline void init(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();
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
#endif
}
static inline void request(void (*handler)(icclient_response *), void (*callback)(void *), struct body *body, char *fmt, ...)
{
va_list ap;
char *p, *sval;
unsigned int ival;
size_t length =
#ifndef __EMSCRIPTEN__
strlen(sampleurl) +
#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, sampleurl);
#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__
if (handler)
attr.onsuccess = handler;
char *post = NULL;
if (body) {
size_t length = 0;
post = malloc(1);
memset(post, '\0', 1);
for (size_t i = 0; i < body->num_pairs; i++) {
struct pair pair = body->pairs[i];
if (!pair.value)
continue;
length += strlen(pair.key) + strlen(pair.value) + (i ? 1 : 0) + 1;
post = realloc(post, length + 1);
if (i)
strcat(post, "&");
sprintf(post, "%s%s=%s", post, pair.key, pair.value);
}
strcpy(attr.requestMethod, "POST");
const char *headers[] = { "Content-Type", "application/x-www-form-urlencoded", NULL };
attr.requestHeaders = headers;
attr.requestData = post;
attr.requestDataSize = length + 1;
struct icclient_post_callback *post_callback = malloc(sizeof(struct icclient_post_callback));
post_callback->post = post;
post_callback->callback = callback;
attr.userData = post_callback;
} else {
strcpy(attr.requestMethod, "GET");
attr.userData = callback;
}
emscripten_fetch(&attr, url);
#else
curl_easy_setopt(curl, CURLOPT_URL, url);
curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, append);
icclient_response response = { .numBytes = 0 };
struct curl_httppost *post, *last = NULL;
if (body) {
for (size_t i = 0; i < body->num_pairs; i++) {
struct 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);
struct icclient_post_callback *post_callback = malloc(sizeof(struct icclient_post_callback));
post_callback->post = post;
post_callback->callback = callback;
response.userData = post_callback;
} else {
curl_easy_setopt(curl, CURLOPT_HTTPGET, 1L);
response.userData = callback;
}
curl_easy_setopt(curl, CURLOPT_WRITEDATA, &response);
CURLcode res = curl_easy_perform(curl);
if (res == CURLE_OK && handler)
handler(&response);
#ifdef DEBUG
else {
const char *error = curl_easy_strerror(res);
#ifdef __ANDROID__
__android_log_print(ANDROID_LOG_ERROR, "libicclient.so", "%s", error);
#else
fprintf(stderr, "%s\n", error);
#endif
}
#endif
#endif
}
#ifndef __EMSCRIPTEN__
static inline void cleanup()
{
free(sampleurl);
curl_easy_cleanup(curl);
curl_global_cleanup();
}
#endif
#endif
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