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/*
This file is part of libmicrohttpd
(C) 2007 Christian Grothoff
libmicrohttpd is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published
by the Free Software Foundation; either version 2, or (at your
option) any later version.
libmicrohttpd is distributed in the hope that 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.
You should have received a copy of the GNU General Public License
along with libmicrohttpd; see the file COPYING. If not, write to the
Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
*/
/**
* @file mhds_get_test.c
* @brief Testcase for libmicrohttpd HTTPS GET operations
* @author Sagie Amir
*/
#include "platform.h"
#include "microhttpd.h"
#include <sys/stat.h>
#include "gnutls.h"
#include <curl/curl.h>
#define DEBUG_CURL_VERBOSE 0
#define PAGE_NOT_FOUND "<html><head><title>File not found</title></head><body>File not found</body></html>"
#define MHD_E_MEM "Error: memory error\n"
#define MHD_E_SERVER_INIT "Error: failed to start server\n"
#define MHD_E_TEST_FILE_CREAT "Error: failed to setup test file\n"
#define MHD_E_CERT_FILE_CREAT "Error: failed to setup test certificate\n"
#define MHD_E_KEY_FILE_CREAT "Error: failed to setup test certificate\n"
#include "tls_test_keys.h"
const int DEBUG_GNUTLS_LOG_LEVEL = 0;
const char *test_file_name = "https_test_file";
const char test_file_data[] = "Hello World\n";
int curl_check_version (const char *req_version, ...);
struct CBC
{
char *buf;
size_t pos;
size_t size;
};
static size_t
copyBuffer (void *ptr, size_t size, size_t nmemb, void *ctx)
{
struct CBC *cbc = ctx;
if (cbc->pos + size * nmemb > cbc->size)
return 0; /* overflow */
memcpy (&cbc->buf[cbc->pos], ptr, size * nmemb);
cbc->pos += size * nmemb;
return size * nmemb;
}
static int
file_reader (void *cls, size_t pos, char *buf, int max)
{
FILE *file = cls;
fseek (file, pos, SEEK_SET);
return fread (buf, 1, max, file);
}
/* HTTP access handler call back */
static int
http_ahc (void *cls, struct MHD_Connection *connection,
const char *url, const char *method, const char *upload_data,
const char *version, unsigned int *upload_data_size, void **ptr)
{
static int aptr;
struct MHD_Response *response;
int ret;
FILE *file;
struct stat buf;
if (0 != strcmp (method, MHD_HTTP_METHOD_GET))
return MHD_NO; /* unexpected method */
if (&aptr != *ptr)
{
/* do never respond on first call */
*ptr = &aptr;
return MHD_YES;
}
*ptr = NULL; /* reset when done */
file = fopen (url, "r");
if (file == NULL)
{
response = MHD_create_response_from_data (strlen (PAGE_NOT_FOUND),
(void *) PAGE_NOT_FOUND,
MHD_NO, MHD_NO);
ret = MHD_queue_response (connection, MHD_HTTP_NOT_FOUND, response);
MHD_destroy_response (response);
}
else
{
stat (url, &buf);
response = MHD_create_response_from_callback (buf.st_size, 32 * 1024, /* 32k PAGE_NOT_FOUND size */
&file_reader, file,
(MHD_ContentReaderFreeCallback)
& fclose);
ret = MHD_queue_response (connection, MHD_HTTP_OK, response);
MHD_destroy_response (response);
}
return ret;
}
/*
* test HTTPS transfer
* @param test_fd: file to attempt transfering
*/
static int
test_https_transfer (FILE * test_fd, char *cipher_suite, int proto_version)
{
CURL *c;
CURLcode errornum;
struct CBC cbc;
char *doc_path;
char url[255];
struct stat statb;
stat (test_file_name, &statb);
int len = statb.st_size;
/* used to memcmp local copy & deamon supplied copy */
unsigned char *mem_test_file_local;
/* setup test file path, url */
doc_path = get_current_dir_name ();
if (NULL == (mem_test_file_local = malloc (len)))
{
fclose (test_fd);
fprintf (stderr, MHD_E_MEM);
return -1;
}
fseek (test_fd, 0, SEEK_SET);
if (fread (mem_test_file_local, sizeof (char), len, test_fd) != len)
{
fclose (test_fd);
fprintf (stderr, "Error: failed to read test file. %s\n",
strerror (errno));
return -1;
}
if (NULL == (cbc.buf = malloc (sizeof (char) * len)))
{
fclose (test_fd);
fprintf (stderr, MHD_E_MEM);
return -1;
}
cbc.size = len;
cbc.pos = 0;
/* construct url - this might use doc_path */
sprintf (url, "%s%s/%s", "https://localhost:42433",
doc_path, test_file_name);
c = curl_easy_init ();
#if DEBUG_CURL_VERBOSE
curl_easy_setopt (c, CURLOPT_VERBOSE, 1);
#endif
curl_easy_setopt (c, CURLOPT_URL, url);
curl_easy_setopt (c, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_0);
curl_easy_setopt (c, CURLOPT_TIMEOUT, 5L);
curl_easy_setopt (c, CURLOPT_CONNECTTIMEOUT, 5L);
curl_easy_setopt (c, CURLOPT_WRITEFUNCTION, ©Buffer);
curl_easy_setopt (c, CURLOPT_FILE, &cbc);
/* TLS options */
curl_easy_setopt (c, CURLOPT_SSLVERSION, proto_version);
curl_easy_setopt (c, CURLOPT_SSL_CIPHER_LIST, cipher_suite);
/* currently skip any peer authentication */
curl_easy_setopt (c, CURLOPT_SSL_VERIFYPEER, 0);
curl_easy_setopt (c, CURLOPT_SSL_VERIFYHOST, 0);
curl_easy_setopt (c, CURLOPT_FAILONERROR, 1);
/* NOTE: use of CONNECTTIMEOUT without also
setting NOSIGNAL results in really weird
crashes on my system! */
curl_easy_setopt (c, CURLOPT_NOSIGNAL, 1);
if (CURLE_OK != (errornum = curl_easy_perform (c)))
{
fprintf (stderr, "curl_easy_perform failed: `%s'\n",
curl_easy_strerror (errornum));
curl_easy_cleanup (c);
return errornum;
}
curl_easy_cleanup (c);
if (memcmp (cbc.buf, mem_test_file_local, len) != 0)
{
fprintf (stderr, "Error: local file & received file differ.\n");
free (cbc.buf);
free (mem_test_file_local);
return -1;
}
free (mem_test_file_local);
free (cbc.buf);
free (doc_path);
return 0;
}
FILE *
setupTestFile ()
{
FILE *test_fd;
if (NULL == (test_fd = fopen (test_file_name, "w+")))
{
fprintf (stderr, "Error: failed to open `%s': %s\n",
test_file_name, strerror (errno));
return NULL;
}
if (fwrite (test_file_data, sizeof (char), strlen (test_file_data), test_fd)
!= strlen (test_file_data))
{
fprintf (stderr, "Error: failed to write `%s. %s'\n",
test_file_name, strerror (errno));
return NULL;
}
if (fflush (test_fd))
{
fprintf (stderr, "Error: failed to flush test file stream. %s\n",
strerror (errno));
return NULL;
}
return test_fd;
}
static int
setup (struct MHD_Daemon **d, va_list arg_list)
{
*d = MHD_start_daemon_va (MHD_USE_THREAD_PER_CONNECTION | MHD_USE_SSL |
MHD_USE_DEBUG, 42433,
NULL, NULL, &http_ahc, NULL, arg_list);
if (*d == NULL)
{
fprintf (stderr, MHD_E_SERVER_INIT);
return -1;
}
return 0;
}
static void
teardown (struct MHD_Daemon *d)
{
MHD_stop_daemon (d);
}
/* TODO test_wrap: change sig to (setup_func, test, va_list test_arg) & move to test_util.c */
int
test_wrap (char *test_name, int
(*test) (FILE * test_fd, char *cipher_suite, int proto_version),
FILE * test_fd, char *cipher_suite, int proto_version, ...)
{
int ret;
va_list arg_list;
struct MHD_Daemon *d;
va_start (arg_list, proto_version);
if (setup (&d, arg_list) != 0)
{
va_end (arg_list);
return -1;
}
fprintf (stdout, "running test: %s ", test_name);
ret = test (test_fd, cipher_suite, proto_version);
if (ret == 0)
{
fprintf (stdout, "[pass]\n");
}
else
{
fprintf (stdout, "[fail]\n");
}
teardown (d);
va_end (arg_list);
return ret;
}
/* perform a HTTP GET request via SSL/TLS */
/* test loading of key & certificate files */
int
test_file_certificates (FILE * test_fd, char *cipher_suite, int proto_version)
{
int ret;
struct MHD_Daemon *d;
FILE *cert_fd, *key_fd;
char cert_path[255], key_path[255], *cur_dir;
cur_dir = get_current_dir_name ();
sprintf (cert_path, "%s/%s", cur_dir, "cert.pem");
sprintf (key_path, "%s/%s", cur_dir, "key.pem");
if (NULL == (key_fd = fopen (key_path, "w+")))
{
fprintf (stderr, MHD_E_KEY_FILE_CREAT);
return -1;
}
if (NULL == (cert_fd = fopen (cert_path, "w+")))
{
fprintf (stderr, MHD_E_CERT_FILE_CREAT);
return -1;
}
fwrite (srv_key_pem, strlen (srv_key_pem), sizeof (char), key_fd);
fwrite (srv_self_signed_cert_pem, strlen (srv_self_signed_cert_pem),
sizeof (char), cert_fd);
fclose (key_fd);
fclose (cert_fd);
if (d == NULL)
{
fprintf (stderr, MHD_E_SERVER_INIT);
return -1;
}
ret = test_https_transfer (test_fd, cipher_suite, proto_version);
free (cur_dir);
remove (cert_path);
remove (key_path);
return ret;
}
/*
* test server refuses to negotiate connections with unsupported protocol versions
*/
int
test_protocol_version (FILE * test_fd, char *cipher_suite,
int curl_proto_version)
{
CURL *c;
CURLcode errornum;
c = curl_easy_init ();
#if DEBUG_CURL_VERBOSE
curl_easy_setopt (c, CURLOPT_VERBOSE, 1);
#endif
curl_easy_setopt (c, CURLOPT_URL, "https://localhost:42433/");
curl_easy_setopt (c, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_0);
curl_easy_setopt (c, CURLOPT_TIMEOUT, 5L);
curl_easy_setopt (c, CURLOPT_CONNECTTIMEOUT, 5L);
/* TLS options */
curl_easy_setopt (c, CURLOPT_SSLVERSION, curl_proto_version);
curl_easy_setopt (c, CURLOPT_SSL_CIPHER_LIST, cipher_suite);
curl_easy_setopt (c, CURLOPT_SSL_VERIFYPEER, 0);
curl_easy_setopt (c, CURLOPT_SSL_VERIFYHOST, 0);
curl_easy_setopt (c, CURLOPT_FAILONERROR, 1);
/* NOTE: use of CONNECTTIMEOUT without also
setting NOSIGNAL results in really weird
crashes on my system! */
curl_easy_setopt (c, CURLOPT_NOSIGNAL, 1);
/* assert daemon rejected request */
if (CURLE_OK == (errornum = curl_easy_perform (c)))
{
fprintf (stderr, "curl_easy_perform failed: `%s'\n",
curl_easy_strerror (errornum));
curl_easy_cleanup (c);
return -1;
}
return 0;
}
/* setup a temporary transfer test file */
int
main (int argc, char *const *argv)
{
FILE *test_fd;
unsigned int errorCount = 0;
char * cur_dir;
char cert_path[255], key_path[255];
MHD_gtls_global_set_log_level (DEBUG_GNUTLS_LOG_LEVEL);
if (curl_check_version (MHD_REQ_CURL_VERSION))
{
return -1;
}
if ((test_fd = setupTestFile ()) == NULL)
{
fprintf (stderr, MHD_E_TEST_FILE_CREAT);
return -1;
}
if (0 != curl_global_init (CURL_GLOBAL_ALL))
{
fprintf (stderr, "Error: %s\n", strerror (errno));
return -1;
}
int mac[] = { MHD_GNUTLS_MAC_SHA1, 0 };
int p[] = { MHD_GNUTLS_SSL3, 0 };
int cipher[] = { MHD_GNUTLS_CIPHER_3DES_CBC, 0 };
int kx[] = { MHD_GNUTLS_KX_ANON_DH, 0 };
errorCount +=
test_wrap ("https_transfer", &test_https_transfer, test_fd, "AES256-SHA",
CURL_SSLVERSION_TLSv1,
MHD_OPTION_HTTPS_MEM_KEY, srv_key_pem,
MHD_OPTION_HTTPS_MEM_CERT, srv_self_signed_cert_pem,
MHD_OPTION_END);
cur_dir = get_current_dir_name ();
sprintf (cert_path, "%s/%s", cur_dir, "cert.pem");
sprintf (key_path, "%s/%s", cur_dir, "key.pem");
errorCount +=
test_wrap ("file certificates", &test_file_certificates, test_fd,
"AES256-SHA", CURL_SSLVERSION_TLSv1, MHD_OPTION_HTTPS_CERT_PATH, cert_path,
MHD_OPTION_HTTPS_KEY_PATH, key_path, MHD_OPTION_END);
free (cur_dir);
errorCount +=
test_wrap ("protocol_version", &test_protocol_version, test_fd,
"AES256-SHA", CURL_SSLVERSION_TLSv1, MHD_OPTION_HTTPS_MEM_KEY,
srv_key_pem, MHD_OPTION_HTTPS_MEM_CERT,
srv_self_signed_cert_pem, MHD_OPTION_PROTOCOL_VERSION, p,
MHD_OPTION_END);
errorCount +=
test_wrap ("cipher DES-CBC3-SHA", &test_https_transfer, test_fd,
"DES-CBC3-SHA", CURL_SSLVERSION_TLSv1,
MHD_OPTION_HTTPS_MEM_KEY, srv_key_pem,
MHD_OPTION_HTTPS_MEM_CERT, srv_self_signed_cert_pem,
MHD_OPTION_CIPHER_ALGORITHM, cipher, MHD_OPTION_END);
errorCount +=
test_wrap ("mac SH1", &test_https_transfer, test_fd, "AES256-SHA",
CURL_SSLVERSION_TLSv1, MHD_OPTION_HTTPS_MEM_KEY, srv_key_pem,
MHD_OPTION_HTTPS_MEM_CERT, srv_self_signed_cert_pem,
MHD_OPTION_MAC_ALGO, mac, MHD_OPTION_END);
errorCount +=
test_wrap ("kx ANON_DH", &test_https_transfer, test_fd,
"ADH-DES-CBC3-SHA", CURL_SSLVERSION_TLSv1,
MHD_OPTION_CRED_TYPE, MHD_GNUTLS_CRD_ANON,
MHD_OPTION_CIPHER_ALGORITHM, cipher, MHD_OPTION_KX_PRIORITY,
kx, MHD_OPTION_END);
errorCount +=
test_wrap ("ADH-AES256-SHA", &test_https_transfer, test_fd,
"ADH-AES256-SHA", CURL_SSLVERSION_TLSv1,
MHD_OPTION_CRED_TYPE, MHD_GNUTLS_CRD_ANON,
MHD_OPTION_KX_PRIORITY, kx, MHD_OPTION_END);
if (errorCount != 0)
fprintf (stderr, "Failed test: %s.\n", argv[0]);
curl_global_cleanup ();
fclose (test_fd);
remove (test_file_name);
return errorCount != 0;
}
|
