static mod_context *mod_gnutls_context_new(liServer *srv) {
mod_context *ctx = g_slice_new0(mod_context);
int r;
if (GNUTLS_E_SUCCESS > (r = gnutls_certificate_allocate_credentials(&ctx->server_cert))) {
ERROR(srv, "gnutls_certificate_allocate_credentials failed(%s): %s",
gnutls_strerror_name(r), gnutls_strerror(r));
goto error0;
}
if (GNUTLS_E_SUCCESS > (r = gnutls_priority_init(&ctx->server_priority, "NORMAL", NULL))) {
ERROR(srv, "gnutls_priority_init('NORMAL') failed(%s): %s",
gnutls_strerror_name(r), gnutls_strerror(r));
goto error1;
}
if (GNUTLS_E_SUCCESS > (r = gnutls_priority_init(&ctx->server_priority_beast, "NORMAL:-CIPHER-ALL:+ARCFOUR-128", NULL))) {
int r1;
if (GNUTLS_E_SUCCESS > (r1 = gnutls_priority_init(&ctx->server_priority_beast, "NORMAL", NULL))) {
ERROR(srv, "gnutls_priority_init('NORMAL') failed(%s): %s",
gnutls_strerror_name(r1), gnutls_strerror(r1));
goto error2;
} else {
ERROR(srv, "gnutls_priority_init('NORMAL:-CIPHER-ALL:+ARCFOUR-128') failed(%s): %s. Using 'NORMAL' instead (BEAST mitigation not available)",
gnutls_strerror_name(r), gnutls_strerror(r));
}
}
#ifdef HAVE_SESSION_TICKET
if (GNUTLS_E_SUCCESS > (r = gnutls_session_ticket_key_generate(&ctx->ticket_key))) {
ERROR(srv, "gnutls_session_ticket_key_generate failed(%s): %s",
gnutls_strerror_name(r), gnutls_strerror(r));
goto error3;
}
#endif
ctx->srv = srv;
ctx->ocsp = li_gnutls_ocsp_new();
ctx->refcount = 1;
ctx->protect_against_beast = 1;
return ctx;
error3:
gnutls_priority_deinit(ctx->server_priority_beast);
error2:
gnutls_priority_deinit(ctx->server_priority);
error1:
gnutls_certificate_free_credentials(ctx->server_cert);
error0:
g_slice_free(mod_context, ctx);
return NULL;
}
SslSocket::~SslSocket()
{
gnutls_priority_deinit(d->priority_cache);
gnutls_deinit(d->session);
gnutls_certificate_free_credentials(d->x509cred);
delete d;
}
static std::string RemoveUnknownTokens(const std::string& prio)
{
std::string ret;
irc::sepstream ss(prio, ':');
for (std::string token; ss.GetToken(token); )
{
// Save current position so we can revert later if needed
const std::string::size_type prevpos = ret.length();
// Append next token
if (!ret.empty())
ret.push_back(':');
ret.append(token);
gnutls_priority_t test;
if (gnutls_priority_init(&test, ret.c_str(), NULL) < 0)
{
// The new token broke the priority string, revert to the previously working one
ServerInstance->Logs->Log(MODNAME, LOG_DEBUG, "Priority string token not recognized: \"%s\"", token.c_str());
ret.erase(prevpos);
}
else
{
// Worked
gnutls_priority_deinit(test);
}
}
return ret;
}
void
manos_tls_global_end ()
{
gnutls_priority_deinit (priority_cache);
gnutls_dh_params_deinit (dh_params);
gnutls_global_deinit ();
}
/**
* gnutls_priority_set_direct - Sets priorities for the cipher suites supported by gnutls.
* @session: is a #gnutls_session_t structure.
* @priorities: is a string describing priorities
* @err_pos: In case of an error this will have the position in the string the error occured
*
* Sets the priorities to use on the ciphers, key exchange methods,
* macs and compression methods. This function avoids keeping a
* priority cache and is used to directly set string priorities to a
* TLS session. For documentation check the gnutls_priority_init().
*
* On syntax error GNUTLS_E_INVALID_REQUEST is returned and 0 on success.
*
**/
int
gnutls_priority_set_direct (gnutls_session_t session, const char *priorities,
const char **err_pos)
{
gnutls_priority_t prio;
int ret;
ret = gnutls_priority_init (&prio, priorities, err_pos);
if (ret < 0)
{
gnutls_assert ();
return ret;
}
ret = gnutls_priority_set (session, prio);
if (ret < 0)
{
gnutls_assert ();
return ret;
}
gnutls_priority_deinit (prio);
return 0;
}
static void
tlsg_ctx_free ( tls_ctx *ctx )
{
tlsg_ctx *c = (tlsg_ctx *)ctx;
int refcount;
if ( !c ) return;
#ifdef LDAP_R_COMPILE
ldap_pvt_thread_mutex_lock( &c->ref_mutex );
#endif
refcount = --c->refcount;
#ifdef LDAP_R_COMPILE
ldap_pvt_thread_mutex_unlock( &c->ref_mutex );
#endif
if ( refcount )
return;
#ifdef HAVE_CIPHERSUITES
gnutls_priority_deinit( c->prios );
#else
LDAP_FREE( c->kx_list );
#endif
gnutls_certificate_free_credentials( c->cred );
ber_memfree ( c );
}
static void
try_prio (const char* prio, unsigned expected_cs, unsigned expected_ciphers)
{
int ret;
gnutls_priority_t p;
const char* err;
const unsigned int * t;
unsigned i, si, count = 0;
/* this must be called once in the program
*/
global_init ();
ret = gnutls_priority_init(&p, prio, &err);
if (ret < 0)
{
fprintf(stderr, "error: %s: %s\n", gnutls_strerror(ret), err);
exit(1);
}
for (i=0;;i++)
{
ret = gnutls_priority_get_cipher_suite_index(p, i, &si);
if (ret == GNUTLS_E_UNKNOWN_CIPHER_SUITE)
continue;
else if (ret == GNUTLS_E_REQUESTED_DATA_NOT_AVAILABLE)
break;
else if (ret == 0)
{
count++;
/* fprintf(stderr, "%s\n", gnutls_cipher_suite_info(si, NULL, NULL, NULL, NULL, NULL)); */
}
}
ret = gnutls_priority_cipher_list (p, &t);
if ((unsigned)ret != expected_ciphers)
{
#if 0
for (i=0;i<ret;i++)
fprintf(stderr, "%s\n", gnutls_cipher_get_name(t[i]));
#endif
fail("expected %d ciphers, found %d\n", expected_ciphers, ret);
exit(1);
}
gnutls_priority_deinit(p);
/* fprintf(stderr, "count: %d\n", count); */
if (debug)
success ("finished: %s\n", prio);
if (count != expected_cs)
{
fail("expected %d ciphersuites, found %d\n", expected_cs, count);
exit(1);
}
}
void tls_deinit(void)
{
if (_tls_init)
{
gnutls_priority_deinit(_tls_priority_cache);
gnutls_global_deinit();
_tls_init = 0;
}
}
static void mod_gnutls_context_release(mod_context *ctx) {
if (!ctx) return;
LI_FORCE_ASSERT(g_atomic_int_get(&ctx->refcount) > 0);
if (g_atomic_int_dec_and_test(&ctx->refcount)) {
gnutls_priority_deinit(ctx->server_priority_beast);
gnutls_priority_deinit(ctx->server_priority);
gnutls_certificate_free_credentials(ctx->server_cert);
#ifdef HAVE_SESSION_TICKET
/* wtf. why is there no function in gnutls for this... */
if (NULL != ctx->ticket_key.data) {
gnutls_free(ctx->ticket_key.data);
ctx->ticket_key.data = NULL;
ctx->ticket_key.size = 0;
}
#endif
li_ssl_session_db_free(ctx->session_db);
ctx->session_db = NULL;
#ifdef USE_SNI
if (NULL != ctx->sni_db) {
li_fetch_database_release(ctx->sni_db);
ctx->sni_db = NULL;
}
if (NULL != ctx->sni_backend_db) {
li_fetch_database_release(ctx->sni_backend_db);
ctx->sni_backend_db = NULL;
}
if (NULL != ctx->sni_fallback_cert) {
gnutls_certificate_free_credentials(ctx->sni_fallback_cert);
ctx->sni_fallback_cert = NULL;
}
#endif
gnutls_dh_params_deinit(ctx->dh_params);
if (NULL != ctx->pin) {
g_string_free(ctx->pin, TRUE);
ctx->pin = NULL;
}
li_gnutls_ocsp_free(ctx->ocsp);
g_slice_free(mod_context, ctx);
}
}
/**
* @short Frees the user data
* @memberof onion_https_t
*
* @param op
*/
static void onion_https_free_user_data(onion_listen_point *op){
ONION_DEBUG("Free HTTPS %s:%s", op->hostname, op->port);
onion_https *https=(onion_https*)op->user_data;
gnutls_certificate_free_credentials (https->x509_cred);
gnutls_dh_params_deinit(https->dh_params);
gnutls_priority_deinit (https->priority_cache);
//if (op->server->flags&O_SSL_NO_DEINIT)
gnutls_global_deinit(); // This may cause problems if several characters use the gnutls on the same binary.
onion_low_free(https);
}
TLSServer::~TLSServer ()
{
gnutls_certificate_free_credentials (_credentials);
gnutls_priority_deinit (_priorities);
gnutls_global_deinit ();
if (_socket)
{
shutdown (_socket, SHUT_RDWR);
close (_socket);
}
}
void Plugin::_deinit()
{
if (this->init.contains("priority"))
gnutls_priority_deinit(this->priority);
if (this->init.contains("credentials"))
gnutls_certificate_free_credentials(this->x509_cred);
if (this->init.contains("dh_params"))
gnutls_dh_params_deinit(this->dhParams);
if (this->init.contains("crt"))
gnutls_x509_crt_deinit(this->crt);
if (this->init.contains("privkey"))
gnutls_x509_privkey_deinit(this->key);
if (this->init.contains("global"))
gnutls_global_deinit();
this->init.clear();
}
void
relay_config_change_network_ssl_priorities (void *data,
struct t_config_option *option)
{
/* make C compiler happy */
(void) data;
(void) option;
#ifdef HAVE_GNUTLS
if (relay_network_init_ok && relay_gnutls_priority_cache)
{
gnutls_priority_deinit (*relay_gnutls_priority_cache);
relay_network_set_priority ();
}
#endif
}
static void
ssl_gnutls_uninit(void)
{
gnutls_global_deinit();
gnutls_certificate_free_credentials(xcred);
xcred = NULL;
#ifdef HAVE_GNUTLS_PRIORITY_FUNCS
if (host_priorities) {
g_hash_table_destroy(host_priorities);
host_priorities = NULL;
}
gnutls_priority_deinit(default_priority);
default_priority = NULL;
#endif
}
static void
tlsg_ctx_free ( tls_ctx *ctx )
{
tlsg_ctx *c = (tlsg_ctx *)ctx;
int refcount;
if ( !c ) return;
LDAP_MUTEX_LOCK( &c->ref_mutex );
refcount = --c->refcount;
LDAP_MUTEX_UNLOCK( &c->ref_mutex );
if ( refcount )
return;
gnutls_priority_deinit( c->prios );
gnutls_certificate_free_credentials( c->cred );
if ( c->dh_params )
gnutls_dh_params_deinit( c->dh_params );
ber_memfree ( c );
}
void DTLS_Shutdown(void)
{
int index;
for (index = 0;index < MAX_DTLS_SESSIONS; index++)
{
if (sessions[index].Session)
{
FreeSession(&sessions[index]);
}
}
if (_CertCredentials)
{
gnutls_certificate_free_credentials(_CertCredentials);
_CertCredentials = NULL;
}
// gnutls_dh_params_deinit(_DHParameters);
gnutls_priority_deinit(_PriorityCache);
gnutls_global_deinit();
}
int
relay_config_check_network_ssl_priorities (void *data,
struct t_config_option *option,
const char *value)
{
#ifdef HAVE_GNUTLS
gnutls_priority_t priority_cache;
const char *pos_error;
int rc;
/* make C compiler happy */
(void) data;
(void) option;
pos_error = value;
if (value && value[0])
{
rc = gnutls_priority_init (&priority_cache, value, &pos_error);
if (rc == GNUTLS_E_SUCCESS)
{
gnutls_priority_deinit (priority_cache);
return 1;
}
}
weechat_printf (NULL,
_("%s%s: invalid priorities string, error "
"at this position in string: \"%s\""),
weechat_prefix ("error"), RELAY_PLUGIN_NAME,
(pos_error) ? pos_error : value);
return 0;
#else
/* make C compiler happy */
(void) data;
(void) option;
(void) value;
return 1;
#endif
}
static void
tlsg_ctx_free ( tls_ctx *ctx )
{
tlsg_ctx *c = (tlsg_ctx *)ctx;
int refcount;
if ( !c ) return;
LDAP_MUTEX_LOCK( &c->ref_mutex );
refcount = --c->refcount;
LDAP_MUTEX_UNLOCK( &c->ref_mutex );
if ( refcount )
return;
#ifdef HAVE_CIPHERSUITES
gnutls_priority_deinit( c->prios );
#else
LDAP_FREE( c->kx_list );
#endif
gnutls_certificate_free_credentials( c->cred );
ber_memfree ( c );
}
/**
* @short Removes the allocated data
* @memberof onion_t
*/
void onion_free(onion *onion){
ONION_DEBUG("Onion free");
#ifdef HAVE_PTHREADS
if (onion->flags&O_THREADS_ENABLED){
int ntries=5;
int c;
for(;ntries--;){
sem_getvalue(&onion->thread_count,&c);
if (c==onion->max_threads){
break;
}
ONION_INFO("Still some petitions on process (%d). Wait a little bit (%d).",c,ntries);
sleep(1);
}
}
#endif
close(onion->listenfd);
if (onion->poller)
onion_poller_free(onion->poller);
if (onion->username)
free(onion->username);
#ifdef HAVE_GNUTLS
if (onion->flags&O_SSL_ENABLED){
gnutls_certificate_free_credentials (onion->x509_cred);
gnutls_dh_params_deinit(onion->dh_params);
gnutls_priority_deinit (onion->priority_cache);
if (!(onion->flags&O_SSL_NO_DEINIT))
gnutls_global_deinit(); // This may cause problems if several characters use the gnutls on the same binary.
}
#endif
if (onion->port)
free(onion->port);
if (onion->hostname)
free(onion->hostname);
onion_server_free(onion->server);
free(onion);
}
void
relay_network_end ()
{
if (relay_network_init_ok)
{
#ifdef HAVE_GNUTLS
if (relay_gnutls_priority_cache)
{
gnutls_priority_deinit (*relay_gnutls_priority_cache);
free (relay_gnutls_priority_cache);
relay_gnutls_priority_cache = NULL;
}
if (relay_gnutls_dh_params)
{
gnutls_dh_params_deinit (*relay_gnutls_dh_params);
free (relay_gnutls_dh_params);
relay_gnutls_dh_params = NULL;
}
gnutls_certificate_free_credentials (relay_gnutls_x509_cred);
#endif
relay_network_init_ok = 0;
}
}
SslDriver::~SslDriver()
{
TRACE("~SslDriver()");
gnutls_priority_deinit(priorities_);
delete[] items_;
}
int
main (void)
{
int ret, sd, ii;
gnutls_session_t session;
gnutls_priority_t priorities_cache;
char buffer[MAX_BUF + 1];
gnutls_certificate_credentials_t xcred;
/* Allow connections to servers that have OpenPGP keys as well.
*/
gnutls_global_init ();
load_keys ();
/* X509 stuff */
gnutls_certificate_allocate_credentials (&xcred);
/* priorities */
gnutls_priority_init( &priorities_cache, "NORMAL", NULL);
/* sets the trusted cas file
*/
gnutls_certificate_set_x509_trust_file (xcred, CAFILE, GNUTLS_X509_FMT_PEM);
gnutls_certificate_client_set_retrieve_function (xcred, cert_callback);
/* Initialize TLS session
*/
gnutls_init (&session, GNUTLS_CLIENT);
/* Use default priorities */
gnutls_priority_set (session, priorities_cache);
/* put the x509 credentials to the current session
*/
gnutls_credentials_set (session, GNUTLS_CRD_CERTIFICATE, xcred);
/* connect to the peer
*/
sd = tcp_connect ();
gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) sd);
/* Perform the TLS handshake
*/
ret = gnutls_handshake (session);
if (ret < 0)
{
fprintf (stderr, "*** Handshake failed\n");
gnutls_perror (ret);
goto end;
}
else
{
printf ("- Handshake was completed\n");
}
gnutls_record_send (session, MSG, strlen (MSG));
ret = gnutls_record_recv (session, buffer, MAX_BUF);
if (ret == 0)
{
printf ("- Peer has closed the TLS connection\n");
goto end;
}
else if (ret < 0)
{
fprintf (stderr, "*** Error: %s\n", gnutls_strerror (ret));
goto end;
}
printf ("- Received %d bytes: ", ret);
for (ii = 0; ii < ret; ii++)
{
fputc (buffer[ii], stdout);
}
fputs ("\n", stdout);
gnutls_bye (session, GNUTLS_SHUT_RDWR);
end:
tcp_close (sd);
gnutls_deinit (session);
gnutls_certificate_free_credentials (xcred);
gnutls_priority_deinit( priorities_cache);
gnutls_global_deinit ();
return 0;
}
int
main (void)
{
int listen_sd;
int sock, ret;
struct sockaddr_in sa_serv;
struct sockaddr_in cli_addr;
socklen_t cli_addr_size;
gnutls_session_t session;
char buffer[MAX_BUFFER];
priv_data_st priv;
gnutls_datum_t cookie_key;
gnutls_dtls_prestate_st prestate;
int mtu = 1400;
unsigned char sequence[8];
/* this must be called once in the program
*/
gnutls_global_init ();
gnutls_certificate_allocate_credentials (&x509_cred);
gnutls_certificate_set_x509_trust_file (x509_cred, CAFILE,
GNUTLS_X509_FMT_PEM);
gnutls_certificate_set_x509_crl_file (x509_cred, CRLFILE,
GNUTLS_X509_FMT_PEM);
ret = gnutls_certificate_set_x509_key_file (x509_cred, CERTFILE, KEYFILE,
GNUTLS_X509_FMT_PEM);
if (ret < 0)
{
printf("No certificate or key were found\n");
exit(1);
}
generate_dh_params ();
gnutls_certificate_set_dh_params (x509_cred, dh_params);
gnutls_priority_init (&priority_cache,
"PERFORMANCE:-VERS-TLS-ALL:+VERS-DTLS1.0:%SERVER_PRECEDENCE",
NULL);
gnutls_key_generate (&cookie_key, GNUTLS_COOKIE_KEY_SIZE);
/* Socket operations
*/
listen_sd = socket (AF_INET, SOCK_DGRAM, 0);
memset (&sa_serv, '\0', sizeof (sa_serv));
sa_serv.sin_family = AF_INET;
sa_serv.sin_addr.s_addr = INADDR_ANY;
sa_serv.sin_port = htons (PORT);
{ /* DTLS requires the IP don't fragment (DF) bit to be set */
#if defined(IP_DONTFRAG)
int optval = 1;
setsockopt (listen_sd, IPPROTO_IP, IP_DONTFRAG,
(const void *) &optval, sizeof (optval));
#elif defined(IP_MTU_DISCOVER)
int optval = IP_PMTUDISC_DO;
setsockopt(listen_sd, IPPROTO_IP, IP_MTU_DISCOVER,
(const void*) &optval, sizeof (optval));
#endif
}
bind (listen_sd, (struct sockaddr *) &sa_serv, sizeof (sa_serv));
printf ("UDP server ready. Listening to port '%d'.\n\n", PORT);
for (;;)
{
printf ("Waiting for connection...\n");
sock = wait_for_connection (listen_sd);
if (sock < 0)
continue;
cli_addr_size = sizeof (cli_addr);
ret = recvfrom (sock, buffer, sizeof (buffer), MSG_PEEK,
(struct sockaddr *) &cli_addr, &cli_addr_size);
if (ret > 0)
{
memset (&prestate, 0, sizeof (prestate));
ret = gnutls_dtls_cookie_verify (&cookie_key, &cli_addr,
sizeof (cli_addr), buffer, ret,
&prestate);
if (ret < 0) /* cookie not valid */
{
priv_data_st s;
memset (&s, 0, sizeof (s));
s.fd = sock;
s.cli_addr = (void *) &cli_addr;
s.cli_addr_size = sizeof (cli_addr);
printf ("Sending hello verify request to %s\n",
human_addr ((struct sockaddr *) &cli_addr,
sizeof (cli_addr), buffer,
sizeof (buffer)));
gnutls_dtls_cookie_send (&cookie_key, &cli_addr,
sizeof (cli_addr), &prestate,
(gnutls_transport_ptr_t) & s,
push_func);
/* discard peeked data */
recvfrom (sock, buffer, sizeof (buffer), 0,
(struct sockaddr *) &cli_addr, &cli_addr_size);
usleep (100);
continue;
}
printf ("Accepted connection from %s\n",
human_addr ((struct sockaddr *)
&cli_addr, sizeof (cli_addr), buffer,
sizeof (buffer)));
}
else
continue;
session = initialize_tls_session ();
gnutls_dtls_prestate_set (session, &prestate);
gnutls_dtls_set_mtu (session, mtu);
priv.session = session;
priv.fd = sock;
priv.cli_addr = (struct sockaddr *) &cli_addr;
priv.cli_addr_size = sizeof (cli_addr);
gnutls_transport_set_ptr (session, &priv);
gnutls_transport_set_push_function (session, push_func);
gnutls_transport_set_pull_function (session, pull_func);
gnutls_transport_set_pull_timeout_function (session, pull_timeout_func);
do
{
ret = gnutls_handshake (session);
}
while (ret < 0 && gnutls_error_is_fatal (ret) == 0);
if (ret < 0)
{
fprintf (stderr, "Error in handshake(): %s\n",
gnutls_strerror (ret));
gnutls_deinit (session);
continue;
}
printf ("- Handshake was completed\n");
for (;;)
{
do
{
ret = gnutls_record_recv_seq (session, buffer, MAX_BUFFER,
sequence);
}
while (ret == GNUTLS_E_AGAIN || ret == GNUTLS_E_INTERRUPTED);
if (ret < 0)
{
fprintf (stderr, "Error in recv(): %s\n",
gnutls_strerror (ret));
break;
}
if (ret == 0)
{
printf ("EOF\n\n");
break;
}
buffer[ret] = 0;
printf ("received[%.2x%.2x%.2x%.2x%.2x%.2x%.2x%.2x]: %s\n",
sequence[0], sequence[1], sequence[2], sequence[3],
sequence[4], sequence[5], sequence[6], sequence[7], buffer);
/* reply back */
ret = gnutls_record_send (session, buffer, ret);
if (ret < 0)
{
fprintf (stderr, "Error in send(): %s\n",
gnutls_strerror (ret));
break;
}
}
gnutls_bye (session, GNUTLS_SHUT_WR);
gnutls_deinit (session);
}
close (listen_sd);
gnutls_certificate_free_credentials (x509_cred);
gnutls_priority_deinit (priority_cache);
gnutls_global_deinit ();
return 0;
}
~Priority()
{
gnutls_priority_deinit(priority);
}
void SSLi_deinit()
{
gnutls_certificate_free_credentials(certificate);
gnutls_priority_deinit(cipherCache);
gnutls_global_deinit();
}
int
main (void)
{
int err, listen_sd, i;
int sd, ret;
struct sockaddr_in sa_serv;
struct sockaddr_in sa_cli;
int client_len;
char topbuf[512];
gnutls_session_t session;
char buffer[MAX_BUF + 1];
int optval = 1;
/* to disallow usage of the blocking /dev/random
*/
gcry_control (GCRYCTL_ENABLE_QUICK_RANDOM, 0);
/* this must be called once in the program
*/
gnutls_global_init ();
gnutls_certificate_allocate_credentials (&x509_cred);
gnutls_certificate_set_x509_trust_file (x509_cred, CAFILE,
GNUTLS_X509_FMT_PEM);
gnutls_certificate_set_x509_crl_file (x509_cred, CRLFILE,
GNUTLS_X509_FMT_PEM);
gnutls_certificate_set_x509_key_file (x509_cred, CERTFILE, KEYFILE,
GNUTLS_X509_FMT_PEM);
gnutls_psk_allocate_server_credentials (&psk_cred);
gnutls_psk_set_server_credentials_function (psk_cred, pskfunc);
generate_dh_params ();
gnutls_priority_init (&priority_cache, "NORMAL:PSK", NULL);
gnutls_certificate_set_dh_params (x509_cred, dh_params);
/* Socket operations
*/
listen_sd = socket (AF_INET, SOCK_STREAM, 0);
SOCKET_ERR (listen_sd, "socket");
memset (&sa_serv, '\0', sizeof (sa_serv));
sa_serv.sin_family = AF_INET;
sa_serv.sin_addr.s_addr = INADDR_ANY;
sa_serv.sin_port = htons (PORT); /* Server Port number */
setsockopt (listen_sd, SOL_SOCKET, SO_REUSEADDR, &optval, sizeof (int));
err = bind (listen_sd, (SA *) & sa_serv, sizeof (sa_serv));
SOCKET_ERR (err, "bind");
err = listen (listen_sd, 1024);
SOCKET_ERR (err, "listen");
printf ("Server ready. Listening to port '%d'.\n\n", PORT);
client_len = sizeof (sa_cli);
for (;;)
{
session = initialize_tls_session ();
sd = accept (listen_sd, (SA *) & sa_cli, &client_len);
printf ("- connection from %s, port %d\n",
inet_ntop (AF_INET, &sa_cli.sin_addr, topbuf,
sizeof (topbuf)), ntohs (sa_cli.sin_port));
gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) sd);
ret = gnutls_handshake (session);
if (ret < 0)
{
close (sd);
gnutls_deinit (session);
fprintf (stderr, "*** Handshake has failed (%s)\n\n",
gnutls_strerror (ret));
continue;
}
printf ("- Handshake was completed\n");
/* see the Getting peer's information example */
/* print_info(session); */
i = 0;
for (;;)
{
memset (buffer, 0, MAX_BUF + 1);
ret = gnutls_record_recv (session, buffer, MAX_BUF);
if (ret == 0)
{
printf ("\n- Peer has closed the GNUTLS connection\n");
break;
}
else if (ret < 0)
{
fprintf (stderr, "\n*** Received corrupted "
"data(%d). Closing the connection.\n\n", ret);
break;
}
else if (ret > 0)
{
/* echo data back to the client
*/
gnutls_record_send (session, buffer, strlen (buffer));
}
}
printf ("\n");
/* do not wait for the peer to close the connection.
*/
gnutls_bye (session, GNUTLS_SHUT_WR);
close (sd);
gnutls_deinit (session);
}
close (listen_sd);
gnutls_certificate_free_credentials (x509_cred);
gnutls_psk_free_server_credentials (psk_cred);
gnutls_priority_deinit (priority_cache);
gnutls_global_deinit ();
return 0;
}
int /* O - 0 on success, -1 on failure */
_httpTLSStart(http_t *http) /* I - Connection to server */
{
char hostname[256], /* Hostname */
*hostptr; /* Pointer into hostname */
int status; /* Status of handshake */
gnutls_certificate_credentials_t *credentials;
/* TLS credentials */
char priority_string[1024];
/* Priority string */
DEBUG_printf(("3_httpTLSStart(http=%p)", http));
if (tls_options < 0)
{
DEBUG_puts("4_httpTLSStart: Setting defaults.");
_cupsSetDefaults();
DEBUG_printf(("4_httpTLSStart: tls_options=%x", tls_options));
}
if (http->mode == _HTTP_MODE_SERVER && !tls_keypath)
{
DEBUG_puts("4_httpTLSStart: cupsSetServerCredentials not called.");
http->error = errno = EINVAL;
http->status = HTTP_STATUS_ERROR;
_cupsSetError(IPP_STATUS_ERROR_INTERNAL, _("Server credentials not set."), 1);
return (-1);
}
credentials = (gnutls_certificate_credentials_t *)
malloc(sizeof(gnutls_certificate_credentials_t));
if (credentials == NULL)
{
DEBUG_printf(("8_httpStartTLS: Unable to allocate credentials: %s",
strerror(errno)));
http->error = errno;
http->status = HTTP_STATUS_ERROR;
_cupsSetHTTPError(HTTP_STATUS_ERROR);
return (-1);
}
gnutls_certificate_allocate_credentials(credentials);
status = gnutls_init(&http->tls, http->mode == _HTTP_MODE_CLIENT ? GNUTLS_CLIENT : GNUTLS_SERVER);
if (!status)
status = gnutls_set_default_priority(http->tls);
if (status)
{
http->error = EIO;
http->status = HTTP_STATUS_ERROR;
DEBUG_printf(("4_httpTLSStart: Unable to initialize common TLS parameters: %s", gnutls_strerror(status)));
_cupsSetError(IPP_STATUS_ERROR_CUPS_PKI, gnutls_strerror(status), 0);
gnutls_deinit(http->tls);
gnutls_certificate_free_credentials(*credentials);
free(credentials);
http->tls = NULL;
return (-1);
}
if (http->mode == _HTTP_MODE_CLIENT)
{
/*
* Client: get the hostname to use for TLS...
*/
if (httpAddrLocalhost(http->hostaddr))
{
strlcpy(hostname, "localhost", sizeof(hostname));
}
else
{
/*
* Otherwise make sure the hostname we have does not end in a trailing dot.
*/
strlcpy(hostname, http->hostname, sizeof(hostname));
if ((hostptr = hostname + strlen(hostname) - 1) >= hostname &&
*hostptr == '.')
*hostptr = '\0';
}
status = gnutls_server_name_set(http->tls, GNUTLS_NAME_DNS, hostname, strlen(hostname));
}
else
{
/*
* Server: get certificate and private key...
*/
char crtfile[1024], /* Certificate file */
keyfile[1024]; /* Private key file */
int have_creds = 0; /* Have credentials? */
if (http->fields[HTTP_FIELD_HOST][0])
{
/*
* Use hostname for TLS upgrade...
*/
strlcpy(hostname, http->fields[HTTP_FIELD_HOST], sizeof(hostname));
}
else
{
/*
* Resolve hostname from connection address...
*/
http_addr_t addr; /* Connection address */
socklen_t addrlen; /* Length of address */
addrlen = sizeof(addr);
if (getsockname(http->fd, (struct sockaddr *)&addr, &addrlen))
{
DEBUG_printf(("4_httpTLSStart: Unable to get socket address: %s", strerror(errno)));
hostname[0] = '\0';
}
else if (httpAddrLocalhost(&addr))
hostname[0] = '\0';
else
{
httpAddrLookup(&addr, hostname, sizeof(hostname));
DEBUG_printf(("4_httpTLSStart: Resolved socket address to \"%s\".", hostname));
}
}
if (isdigit(hostname[0] & 255) || hostname[0] == '[')
hostname[0] = '\0'; /* Don't allow numeric addresses */
if (hostname[0])
{
http_gnutls_make_path(crtfile, sizeof(crtfile), tls_keypath, hostname, "crt");
http_gnutls_make_path(keyfile, sizeof(keyfile), tls_keypath, hostname, "key");
have_creds = !access(crtfile, 0) && !access(keyfile, 0);
}
else if (tls_common_name)
{
http_gnutls_make_path(crtfile, sizeof(crtfile), tls_keypath, tls_common_name, "crt");
http_gnutls_make_path(keyfile, sizeof(keyfile), tls_keypath, tls_common_name, "key");
have_creds = !access(crtfile, 0) && !access(keyfile, 0);
}
if (!have_creds && tls_auto_create && (hostname[0] || tls_common_name))
{
DEBUG_printf(("4_httpTLSStart: Auto-create credentials for \"%s\".", hostname[0] ? hostname : tls_common_name));
if (!cupsMakeServerCredentials(tls_keypath, hostname[0] ? hostname : tls_common_name, 0, NULL, time(NULL) + 365 * 86400))
{
DEBUG_puts("4_httpTLSStart: cupsMakeServerCredentials failed.");
http->error = errno = EINVAL;
http->status = HTTP_STATUS_ERROR;
_cupsSetError(IPP_STATUS_ERROR_INTERNAL, _("Unable to create server credentials."), 1);
return (-1);
}
}
DEBUG_printf(("4_httpTLSStart: Using certificate \"%s\" and private key \"%s\".", crtfile, keyfile));
status = gnutls_certificate_set_x509_key_file(*credentials, crtfile, keyfile, GNUTLS_X509_FMT_PEM);
}
if (!status)
status = gnutls_credentials_set(http->tls, GNUTLS_CRD_CERTIFICATE, *credentials);
if (status)
{
http->error = EIO;
http->status = HTTP_STATUS_ERROR;
DEBUG_printf(("4_httpTLSStart: Unable to complete client/server setup: %s", gnutls_strerror(status)));
_cupsSetError(IPP_STATUS_ERROR_CUPS_PKI, gnutls_strerror(status), 0);
gnutls_deinit(http->tls);
gnutls_certificate_free_credentials(*credentials);
free(credentials);
http->tls = NULL;
return (-1);
}
strlcpy(priority_string, "NORMAL", sizeof(priority_string));
if (tls_options & _HTTP_TLS_DENY_TLS10)
strlcat(priority_string, ":+VERS-TLS-ALL:-VERS-TLS1.0:-VERS-SSL3.0", sizeof(priority_string));
else if (tls_options & _HTTP_TLS_ALLOW_SSL3)
strlcat(priority_string, ":+VERS-TLS-ALL", sizeof(priority_string));
else
strlcat(priority_string, ":+VERS-TLS-ALL:-VERS-SSL3.0", sizeof(priority_string));
if (!(tls_options & _HTTP_TLS_ALLOW_RC4))
strlcat(priority_string, ":-ARCFOUR-128", sizeof(priority_string));
if (!(tls_options & _HTTP_TLS_ALLOW_DH))
strlcat(priority_string, ":!ANON-DH", sizeof(priority_string));
#ifdef HAVE_GNUTLS_PRIORITY_SET_DIRECT
gnutls_priority_set_direct(http->tls, priority_string, NULL);
#else
gnutls_priority_t priority; /* Priority */
gnutls_priority_init(&priority, priority_string, NULL);
gnutls_priority_set(http->tls, priority);
gnutls_priority_deinit(priority);
#endif /* HAVE_GNUTLS_PRIORITY_SET_DIRECT */
gnutls_transport_set_ptr(http->tls, (gnutls_transport_ptr_t)http);
gnutls_transport_set_pull_function(http->tls, http_gnutls_read);
#ifdef HAVE_GNUTLS_TRANSPORT_SET_PULL_TIMEOUT_FUNCTION
gnutls_transport_set_pull_timeout_function(http->tls, (gnutls_pull_timeout_func)httpWait);
#endif /* HAVE_GNUTLS_TRANSPORT_SET_PULL_TIMEOUT_FUNCTION */
gnutls_transport_set_push_function(http->tls, http_gnutls_write);
while ((status = gnutls_handshake(http->tls)) != GNUTLS_E_SUCCESS)
{
DEBUG_printf(("5_httpStartTLS: gnutls_handshake returned %d (%s)",
status, gnutls_strerror(status)));
if (gnutls_error_is_fatal(status))
{
http->error = EIO;
http->status = HTTP_STATUS_ERROR;
_cupsSetError(IPP_STATUS_ERROR_CUPS_PKI, gnutls_strerror(status), 0);
gnutls_deinit(http->tls);
gnutls_certificate_free_credentials(*credentials);
free(credentials);
http->tls = NULL;
return (-1);
}
}
http->tls_credentials = credentials;
return (0);
}
static void test_ciphersuite_kx(const char *cipher_prio, unsigned pk)
{
/* Server stuff. */
gnutls_anon_server_credentials_t s_anoncred;
gnutls_session_t server;
int sret, cret;
const char *str;
char *suite = NULL;
/* Client stuff. */
gnutls_anon_client_credentials_t c_anoncred;
gnutls_certificate_credentials_t c_certcred, s_certcred;
gnutls_session_t client;
/* Need to enable anonymous KX specifically. */
int ret;
struct benchmark_st st;
struct timespec tr_start, tr_stop;
double avg, sstddev;
gnutls_priority_t priority_cache;
total_diffs_size = 0;
/* Init server */
gnutls_certificate_allocate_credentials(&s_certcred);
gnutls_anon_allocate_server_credentials(&s_anoncred);
ret = 0;
if (pk == GNUTLS_PK_RSA_PSS)
ret = gnutls_certificate_set_x509_key_mem(s_certcred, &server_rsa_pss_cert,
&server_key,
GNUTLS_X509_FMT_PEM);
else if (pk == GNUTLS_PK_RSA)
ret = gnutls_certificate_set_x509_key_mem(s_certcred, &server_cert,
&server_key,
GNUTLS_X509_FMT_PEM);
if (ret < 0) {
fprintf(stderr, "Error in %d: %s\n", __LINE__,
gnutls_strerror(ret));
exit(1);
}
ret = 0;
if (pk == GNUTLS_PK_ECDSA)
ret = gnutls_certificate_set_x509_key_mem(s_certcred, &server_ecc_cert,
&server_ecc_key,
GNUTLS_X509_FMT_PEM);
else if (pk == GNUTLS_PK_EDDSA_ED25519)
ret = gnutls_certificate_set_x509_key_mem(s_certcred, &server_ed25519_cert,
&server_ed25519_key,
GNUTLS_X509_FMT_PEM);
if (ret < 0) {
fprintf(stderr, "Error in %d: %s\n", __LINE__,
gnutls_strerror(ret));
exit(1);
}
/* Init client */
gnutls_anon_allocate_client_credentials(&c_anoncred);
gnutls_certificate_allocate_credentials(&c_certcred);
start_benchmark(&st);
ret = gnutls_priority_init(&priority_cache, cipher_prio, &str);
if (ret < 0) {
fprintf(stderr, "Error in %s\n", str);
exit(1);
}
do {
gnutls_init(&server, GNUTLS_SERVER);
ret =
gnutls_priority_set(server, priority_cache);
if (ret < 0) {
fprintf(stderr, "Error in setting priority: %s\n", gnutls_strerror(ret));
exit(1);
}
gnutls_credentials_set(server, GNUTLS_CRD_ANON,
s_anoncred);
gnutls_credentials_set(server, GNUTLS_CRD_CERTIFICATE,
s_certcred);
gnutls_transport_set_push_function(server, server_push);
gnutls_transport_set_pull_function(server, server_pull);
gnutls_transport_set_ptr(server,
(gnutls_transport_ptr_t) server);
reset_buffers();
gnutls_init(&client, GNUTLS_CLIENT);
ret =
gnutls_priority_set(client, priority_cache);
if (ret < 0) {
fprintf(stderr, "Error in setting priority: %s\n", gnutls_strerror(ret));
exit(1);
}
gnutls_credentials_set(client, GNUTLS_CRD_ANON,
c_anoncred);
gnutls_credentials_set(client, GNUTLS_CRD_CERTIFICATE,
c_certcred);
gnutls_transport_set_push_function(client, client_push);
gnutls_transport_set_pull_function(client, client_pull);
gnutls_transport_set_ptr(client,
(gnutls_transport_ptr_t) client);
gettime(&tr_start);
HANDSHAKE(client, server);
gettime(&tr_stop);
if (suite == NULL)
suite =
gnutls_session_get_desc(server);
gnutls_deinit(client);
gnutls_deinit(server);
total_diffs[total_diffs_size++] = timespec_sub_ms(&tr_stop, &tr_start);
if (total_diffs_size > sizeof(total_diffs)/sizeof(total_diffs[0]))
abort();
st.size += 1;
}
while (benchmark_must_finish == 0);
fprintf(stdout, "%38s ", suite);
gnutls_free(suite);
stop_benchmark(&st, "transactions", 1);
gnutls_priority_deinit(priority_cache);
avg = calc_avg(total_diffs, total_diffs_size);
sstddev = calc_sstdev(total_diffs, total_diffs_size, avg);
printf("%32s %.2f ms, sample variance: %.2f)\n",
"(avg. handshake time:", avg, sstddev);
gnutls_anon_free_client_credentials(c_anoncred);
gnutls_anon_free_server_credentials(s_anoncred);
}
/*
main - Asks for a list of relays, initializes a TLS server and starts a thread for every client.
*/
int main (void)
{
int client_socket_descriptor;
struct sockaddr_in sockaddr_client;
socklen_t client_adress_length;
char topbuf[512];
int ret;
int file;
struct stat fileinfo;
ret = stat(FILE_LIST_RELAYS, &fileinfo);
if (ret != 0) {
fprintf (stderr, "Impossible to find file \"%s\"\n", FILE_LIST_RELAYS);
return -1;
}
nbr_relays = fileinfo.st_size/sizeof(MYSOCKET);
list_relays = malloc (nbr_relays*sizeof(MYSOCKET));
file = open (FILE_LIST_RELAYS, O_RDONLY);
if (file == -1) {
ret = errno;
fprintf (stderr, "Impossible to open \"%s\", errno = %d\n", FILE_LIST_RELAYS, ret);
free (list_relays);
return -1;
}
ret = read (file, list_relays, sizeof(MYSOCKET)*nbr_relays);
if (ret != sizeof(MYSOCKET)*nbr_relays) {
fprintf (stderr, "Error in reading : %d bytes read instead of %d\n", ret, sizeof(MYSOCKET)*nbr_relays);
free (list_relays);
return -1;
}
int i;
for (i=0;i<nbr_relays;i++)
{
int ip = ((MYSOCKET*)list_relays)[i].ip;
printf("Relay[%i], ip=%d.%d.%d.%d, port=%i\n",i,(ip) & 0xFF,(ip>>8) & 0xFF,
(ip>>16) & 0xFF, (ip>>24) & 0xFF,ntohs(((MYSOCKET*)list_relays)[i].port));
}
close (file);
printf ("%d trusted relays successfully read from file \"%s\"\n", nbr_relays, FILE_LIST_RELAYS);
if (mytls_server_init (DIRECTORY_PORT, &xcred, &priority_cache, &listen_socket_descriptor, &sockaddr_server, 0) != 0) {
return -1;
}
client_adress_length = sizeof (sockaddr_client);
for (;;) {
client_socket_descriptor = accept (listen_socket_descriptor, (struct sockaddr *) &sockaddr_client, &client_adress_length);
printf ("- connection from %s, port %d\n", inet_ntop (AF_INET, &sockaddr_client.sin_addr, topbuf, sizeof (topbuf)),
ntohs(sockaddr_client.sin_port));
pthread_t thread;
pthread_attr_t attr;
pthread_attr_init(&attr);
pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
pthread_create(&thread, &attr, handle_connection, (void *)client_socket_descriptor);
}
close (listen_socket_descriptor);
gnutls_certificate_free_credentials (xcred);
gnutls_priority_deinit (priority_cache);
gnutls_global_deinit ();
free (list_relays);
return 0;
}
int main(void)
{
int listen_sd;
int sd, ret;
gnutls_certificate_credentials_t x509_cred;
gnutls_priority_t priority_cache;
struct sockaddr_in sa_serv;
struct sockaddr_in sa_cli;
socklen_t client_len;
char topbuf[512];
gnutls_session_t session;
char buffer[MAX_BUF + 1];
int optval = 1;
/* for backwards compatibility with gnutls < 3.3.0 */
CHECK(gnutls_global_init());
CHECK(gnutls_certificate_allocate_credentials(&x509_cred));
CHECK(gnutls_certificate_set_x509_trust_file(x509_cred, CAFILE,
GNUTLS_X509_FMT_PEM));
CHECK(gnutls_certificate_set_x509_crl_file(x509_cred, CRLFILE,
GNUTLS_X509_FMT_PEM));
/* The following code sets the certificate key pair as well as,
* an OCSP response which corresponds to it. It is possible
* to set multiple key-pairs and multiple OCSP status responses
* (the latter since 3.5.6). See the manual pages of the individual
* functions for more information.
*/
CHECK(gnutls_certificate_set_x509_key_file(x509_cred, CERTFILE,
KEYFILE,
GNUTLS_X509_FMT_PEM));
CHECK(gnutls_certificate_set_ocsp_status_request_file(x509_cred,
OCSP_STATUS_FILE,
0));
CHECK(gnutls_priority_init(&priority_cache, NULL, NULL));
/* Instead of the default options as shown above one could specify
* additional options such as server precedence in ciphersuite selection
* as follows:
* gnutls_priority_init2(&priority_cache,
* "%SERVER_PRECEDENCE",
* NULL, GNUTLS_PRIORITY_INIT_DEF_APPEND);
*/
#if GNUTLS_VERSION_NUMBER >= 0x030506
/* only available since GnuTLS 3.5.6, on previous versions see
* gnutls_certificate_set_dh_params(). */
gnutls_certificate_set_known_dh_params(x509_cred, GNUTLS_SEC_PARAM_MEDIUM);
#endif
/* Socket operations
*/
listen_sd = socket(AF_INET, SOCK_STREAM, 0);
memset(&sa_serv, '\0', sizeof(sa_serv));
sa_serv.sin_family = AF_INET;
sa_serv.sin_addr.s_addr = INADDR_ANY;
sa_serv.sin_port = htons(PORT); /* Server Port number */
setsockopt(listen_sd, SOL_SOCKET, SO_REUSEADDR, (void *) &optval,
sizeof(int));
bind(listen_sd, (struct sockaddr *) &sa_serv, sizeof(sa_serv));
listen(listen_sd, 1024);
printf("Server ready. Listening to port '%d'.\n\n", PORT);
client_len = sizeof(sa_cli);
for (;;) {
CHECK(gnutls_init(&session, GNUTLS_SERVER));
CHECK(gnutls_priority_set(session, priority_cache));
CHECK(gnutls_credentials_set(session, GNUTLS_CRD_CERTIFICATE,
x509_cred));
/* We don't request any certificate from the client.
* If we did we would need to verify it. One way of
* doing that is shown in the "Verifying a certificate"
* example.
*/
gnutls_certificate_server_set_request(session,
GNUTLS_CERT_IGNORE);
gnutls_handshake_set_timeout(session,
GNUTLS_DEFAULT_HANDSHAKE_TIMEOUT);
sd = accept(listen_sd, (struct sockaddr *) &sa_cli,
&client_len);
printf("- connection from %s, port %d\n",
inet_ntop(AF_INET, &sa_cli.sin_addr, topbuf,
sizeof(topbuf)), ntohs(sa_cli.sin_port));
gnutls_transport_set_int(session, sd);
LOOP_CHECK(ret, gnutls_handshake(session));
if (ret < 0) {
close(sd);
gnutls_deinit(session);
fprintf(stderr,
"*** Handshake has failed (%s)\n\n",
gnutls_strerror(ret));
continue;
}
printf("- Handshake was completed\n");
/* see the Getting peer's information example */
/* print_info(session); */
for (;;) {
LOOP_CHECK(ret, gnutls_record_recv(session, buffer, MAX_BUF));
if (ret == 0) {
printf
("\n- Peer has closed the GnuTLS connection\n");
break;
} else if (ret < 0
&& gnutls_error_is_fatal(ret) == 0) {
fprintf(stderr, "*** Warning: %s\n",
gnutls_strerror(ret));
} else if (ret < 0) {
fprintf(stderr, "\n*** Received corrupted "
"data(%d). Closing the connection.\n\n",
ret);
break;
} else if (ret > 0) {
/* echo data back to the client
*/
CHECK(gnutls_record_send(session, buffer, ret));
}
}
printf("\n");
/* do not wait for the peer to close the connection.
*/
LOOP_CHECK(ret, gnutls_bye(session, GNUTLS_SHUT_WR));
close(sd);
gnutls_deinit(session);
}
close(listen_sd);
gnutls_certificate_free_credentials(x509_cred);
gnutls_priority_deinit(priority_cache);
gnutls_global_deinit();
return 0;
}
