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/**
*
* Ulfius Framework example program
*
* This example program describes the main features
* that are available in a callback function
*
* Copyright 2015-2022 Nicolas Mora <mail@babelouest.org>
*
* License MIT
*
*/
#include <jansson.h>
#include <string.h>
#include <ulfius.h>
#include "u_example.h"
#define PORT 7799
#define PROXY_DEST "https://www.wikipedia.org"
#if defined(U_DISABLE_CURL)
#error You must build ulfius with libcurl support enabled to compile this example, check the install documentation
#else
/**
* callback function declaration
*/
int callback_get (const struct _u_request * request, struct _u_response * response, void * user_data);
int main (void) {
// Initialize the instance
struct _u_instance instance;
if (ulfius_init_instance(&instance, PORT, NULL, NULL) != U_OK) {
y_log_message(Y_LOG_LEVEL_ERROR, "Error ulfius_init_instance, abort");
return(1);
}
// Endpoint list declaration
ulfius_add_endpoint_by_val(&instance, "GET", NULL, "*", 0, &callback_get, NULL);
// Start the framework
if (ulfius_start_framework(&instance) == U_OK) {
printf("Start framework on port %u\n", instance.port);
printf("Go to url / to proxify %s\n", PROXY_DEST);
// Wait for the user to press <enter> on the console to quit the application
getchar();
} else {
printf("Error starting framework\n");
}
printf("End framework\n");
ulfius_stop_framework(&instance);
ulfius_clean_instance(&instance);
return 0;
}
/**
* Callback function that put a "Hello World!" string in the response
*/
int callback_get (const struct _u_request * request, struct _u_response * response, void * user_data) {
struct _u_request * req = ulfius_duplicate_request(request);
struct _u_response * res = o_malloc(sizeof(struct _u_response));
ulfius_init_response(res);
int len;
(void)(user_data);
o_free(req->http_url);
u_map_remove_from_key(req->map_header, "Host");
len = snprintf(NULL, 0, "%s%s", PROXY_DEST, request->http_url);
req->http_url = o_malloc((size_t)(len+1));
snprintf(req->http_url, (size_t)(len+1), "%s%s", PROXY_DEST, request->http_url);
printf("Accessing %s as proxy\n", req->http_url);
req->timeout = 30;
ulfius_send_http_request(req, res);
ulfius_copy_response(response, res);
ulfius_clean_response_full(res);
ulfius_clean_request_full(req);
return U_CALLBACK_CONTINUE;
}
#endif
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