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#if defined __ANDROID__ && defined DEBUG
#include <android/log.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <string.h>
#include "request.h"
#ifdef __EMSCRIPTEN__
extern emscripten_fetch_attr_t attr;
#else
#include <pthread.h>
#include <curl/curl.h>
extern char *sampleurl;
extern char *cainfo;
extern char *cookiefile;
struct container {
struct curl_httppost *post;
void (*handler)(interchange_response *);
interchange_response *response;
};
static size_t append(char *data, size_t size, size_t nmemb, interchange_response *response)
{
size_t realsize = size * nmemb;
response->data = realloc(response->data, response->numBytes + realsize + 1);
memcpy(&(response->data[response->numBytes]), data, realsize);
response->numBytes += realsize;
response->data[response->numBytes] = '\0';
return realsize;
}
static void *async(void *arg)
{
struct container *container = (struct container *)arg;
CURLcode res = curl_easy_perform(container->response->curl);
if (container->post)
curl_formfree(container->post);
if (res == CURLE_OK && container->handler)
container->handler(container->response);
else {
#ifdef DEBUG
const char *error = curl_easy_strerror(res);
#ifdef __ANDROID__
__android_log_print(ANDROID_LOG_ERROR, "libinterchange.so", "%s", error);
#else
fprintf(stderr, "%s\n", error);
#endif
#endif
}
free(container);
return NULL;
}
#endif
void request(void (*handler)(interchange_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;
if (body) {
size_t length = 0;
char *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;
attr.userData = post;
} else {
strcpy(attr.requestMethod, "GET");
attr.userData = callback;
}
emscripten_fetch(&attr, url);
#else
CURL *curl = curl_easy_init();
curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1L);
curl_easy_setopt(curl, CURLOPT_COOKIEJAR, cookiefile);
curl_easy_setopt(curl, CURLOPT_COOKIEFILE, cookiefile);
if (cainfo)
curl_easy_setopt(curl, CURLOPT_CAINFO, cainfo);
#ifdef DEBUG
curl_easy_setopt(curl, CURLOPT_VERBOSE, 1L);
#endif
curl_easy_setopt(curl, CURLOPT_URL, url);
curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, append);
interchange_response *response = malloc(sizeof(interchange_response));
response->data = malloc(1);
response->numBytes = 0;
response->userData = callback;
curl_easy_setopt(curl, CURLOPT_WRITEDATA, response);
struct curl_httppost *post = NULL;
struct curl_httppost *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);
} else
curl_easy_setopt(curl, CURLOPT_HTTPGET, 1L);
struct container *container = malloc(sizeof(struct container));
response->curl = curl;
container->post = post;
container->handler = handler;
container->response = response;
pthread_t thread;
pthread_create(&thread, NULL, async, container);
#endif
}
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