/*****************************************************************************
* gnutls.c
*****************************************************************************
- * Copyright (C) 2004-2006 Rémi Denis-Courmont
- * $Id$
- *
- * Authors: Rémi Denis-Courmont <rem # videolan.org>
+ * Copyright (C) 2004-2011 Rémi Denis-Courmont
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* Preamble
*****************************************************************************/
-#include <vlc/vlc.h>
-#include <errno.h>
-#include <time.h>
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+#include <errno.h>
#include <sys/types.h>
#include <errno.h>
-#ifdef HAVE_DIRENT_H
-# include <dirent.h>
-#endif
-#ifdef HAVE_SYS_STAT_H
-# include <sys/stat.h>
-# ifdef HAVE_UNISTD_H
-# include <unistd.h>
-# endif
-#endif
+#include <sys/stat.h>
+#ifdef WIN32
+# include <windows.h>
+# include <io.h>
+# include <wincrypt.h>
+#else
+# include <unistd.h>
+#endif
+#include <fcntl.h>
-#include "vlc_tls.h"
+#include <vlc_common.h>
+#include <vlc_plugin.h>
+#include <vlc_tls.h>
#include <vlc_charset.h>
+#include <vlc_fs.h>
+#include <vlc_block.h>
#include <gcrypt.h>
#include <gnutls/gnutls.h>
#include <gnutls/x509.h>
-#define DH_BITS 1024
-#define CACHE_TIMEOUT 3600
-#define CACHE_SIZE 64
+#include <vlc_gcrypt.h>
+#include "dhparams.h"
+
+#include <assert.h>
/*****************************************************************************
* Module descriptor
*****************************************************************************/
-static int OpenClient (vlc_object_t *);
-static void CloseClient (vlc_object_t *);
+static int OpenClient (vlc_tls_t *, int, const char *);
+static void CloseClient (vlc_tls_t *);
static int OpenServer (vlc_object_t *);
static void CloseServer (vlc_object_t *);
-#define DH_BITS_TEXT N_("Diffie-Hellman prime bits")
-#define DH_BITS_LONGTEXT N_( \
- "This allows you to modify the Diffie-Hellman prime's number of bits, " \
- "used for TLS or SSL-based server-side encryption. This is generally " \
- "not needed." )
-
-#define CACHE_TIMEOUT_TEXT N_("Expiration time for resumed TLS sessions")
-#define CACHE_TIMEOUT_LONGTEXT N_( \
- "It is possible to cache the resumed TLS sessions. This is the expiration "\
- "time of the sessions stored in this cache, in seconds." )
-
-#define CACHE_SIZE_TEXT N_("Number of resumed TLS sessions")
-#define CACHE_SIZE_LONGTEXT N_( \
- "This is the maximum number of resumed TLS sessions that " \
- "the cache will hold." )
-
-#define CHECK_CERT_TEXT N_("Check TLS/SSL server certificate validity")
-#define CHECK_CERT_LONGTEXT N_( \
- "This ensures that the server certificate is valid " \
- "(i.e. signed by an approved Certification Authority)." )
-
-vlc_module_begin();
- set_shortname( "GnuTLS" );
- set_description( _("GnuTLS transport layer security") );
- set_capability( "tls client", 1 );
- set_callbacks( OpenClient, CloseClient );
- set_category( CAT_ADVANCED );
- set_subcategory( SUBCAT_ADVANCED_MISC );
-
- add_bool( "tls-check-cert", VLC_TRUE, NULL, CHECK_CERT_TEXT,
- CHECK_CERT_LONGTEXT, VLC_FALSE );
- add_obsolete_bool( "tls-check-hostname" );
-
- add_submodule();
- set_description( _("GnuTLS server") );
- set_capability( "tls server", 1 );
- set_category( CAT_ADVANCED );
- set_subcategory( SUBCAT_ADVANCED_MISC );
- set_callbacks( OpenServer, CloseServer );
-
- add_integer( "gnutls-dh-bits", DH_BITS, NULL, DH_BITS_TEXT,
- DH_BITS_LONGTEXT, VLC_TRUE );
- add_integer( "gnutls-cache-timeout", CACHE_TIMEOUT, NULL,
- CACHE_TIMEOUT_TEXT, CACHE_TIMEOUT_LONGTEXT, VLC_TRUE );
- add_integer( "gnutls-cache-size", CACHE_SIZE, NULL, CACHE_SIZE_TEXT,
- CACHE_SIZE_LONGTEXT, VLC_TRUE );
-vlc_module_end();
-
-
-
-#ifdef LIBVLC_USE_PTHREAD
-GCRY_THREAD_OPTION_PTHREAD_IMPL;
-# define gcry_threads_vlc gcry_threads_pthread
-#else
-/**
- * gcrypt thread option VLC implementation
- */
-
-# define NEED_THREAD_CONTEXT 1
-static vlc_object_t *__p_gcry_data = NULL;
-
-static int gcry_vlc_mutex_init( void **p_sys )
-{
- int i_val;
- vlc_mutex_t *p_lock = (vlc_mutex_t *)malloc( sizeof( vlc_mutex_t ) );
-
- if( p_lock == NULL)
- return ENOMEM;
+#define PRIORITIES_TEXT N_("TLS cipher priorities")
+#define PRIORITIES_LONGTEXT N_("Ciphers, key exchange methods, " \
+ "hash functions and compression methods can be selected. " \
+ "Refer to GNU TLS documentation for detailed syntax.")
+static const char *const priorities_values[] = {
+ "PERFORMANCE",
+ "NORMAL",
+ "SECURE128",
+ "SECURE256",
+ "EXPORT",
+};
+static const char *const priorities_text[] = {
+ N_("Performance (prioritize faster ciphers)"),
+ N_("Normal"),
+ N_("Secure 128-bits (exclude 256-bits ciphers)"),
+ N_("Secure 256-bits (prioritize 256-bits ciphers)"),
+ N_("Export (include insecure ciphers)"),
+};
- i_val = vlc_mutex_init( __p_gcry_data, p_lock );
- if( i_val )
- free( p_lock );
- else
- *p_sys = p_lock;
- return i_val;
-}
+vlc_module_begin ()
+ set_shortname( "GNU TLS" )
+ set_description( N_("GNU TLS transport layer security") )
+ set_capability( "tls client", 1 )
+ set_callbacks( OpenClient, CloseClient )
+ set_category( CAT_ADVANCED )
+ set_subcategory( SUBCAT_ADVANCED_MISC )
-static int gcry_vlc_mutex_destroy( void **p_sys )
-{
- int i_val;
- vlc_mutex_t *p_lock = (vlc_mutex_t *)*p_sys;
+ add_submodule ()
+ set_description( N_("GNU TLS server") )
+ set_capability( "tls server", 1 )
+ set_category( CAT_ADVANCED )
+ set_subcategory( SUBCAT_ADVANCED_MISC )
+ set_callbacks( OpenServer, CloseServer )
- i_val = vlc_mutex_destroy( p_lock );
- free( p_lock );
- return i_val;
-}
-
-static int gcry_vlc_mutex_lock( void **p_sys )
-{
- return vlc_mutex_lock( (vlc_mutex_t *)*p_sys );
-}
-
-static int gcry_vlc_mutex_unlock( void **lock )
-{
- return vlc_mutex_unlock( (vlc_mutex_t *)*lock );
-}
-
-static struct gcry_thread_cbs gcry_threads_vlc =
-{
- GCRY_THREAD_OPTION_USER,
- NULL,
- gcry_vlc_mutex_init,
- gcry_vlc_mutex_destroy,
- gcry_vlc_mutex_lock,
- gcry_vlc_mutex_unlock
-};
-#endif
+ add_string ("gnutls-priorities", "NORMAL", PRIORITIES_TEXT,
+ PRIORITIES_LONGTEXT, false)
+ change_string_list (priorities_values, priorities_text, NULL)
+vlc_module_end ()
+static vlc_mutex_t gnutls_mutex = VLC_STATIC_MUTEX;
/**
* Initializes GnuTLS with proper locking.
{
int ret = VLC_EGENERIC;
- vlc_mutex_t *lock = var_GetGlobalMutex ("gnutls_mutex");
- vlc_mutex_lock (lock);
-
- /* This should probably be removed/fixed. It will screw up with multiple
- * LibVLC instances. */
-#ifdef NEED_THREAD_CONTEXT
- __p_gcry_data = VLC_OBJECT (p_this->p_libvlc);
-#endif
+ vlc_gcrypt_init (); /* GnuTLS depends on gcrypt */
- gcry_control (GCRYCTL_SET_THREAD_CBS, &gcry_threads_vlc);
+ vlc_mutex_lock (&gnutls_mutex);
if (gnutls_global_init ())
{
msg_Err (p_this, "cannot initialize GnuTLS");
goto error;
}
- const char *psz_version = gnutls_check_version ("1.3.3");
+ const char *psz_version = gnutls_check_version ("2.0.0");
if (psz_version == NULL)
{
msg_Err (p_this, "unsupported GnuTLS version");
ret = VLC_SUCCESS;
error:
- vlc_mutex_unlock (lock);
+ vlc_mutex_unlock (&gnutls_mutex);
return ret;
}
*/
static void gnutls_Deinit (vlc_object_t *p_this)
{
- vlc_mutex_t *lock = var_GetGlobalMutex( "gnutls_mutex" );
- vlc_mutex_lock (lock);
+ vlc_mutex_lock (&gnutls_mutex);
gnutls_global_deinit ();
msg_Dbg (p_this, "GnuTLS deinitialized");
- vlc_mutex_unlock (lock);
+ vlc_mutex_unlock (&gnutls_mutex);
}
switch (val)
{
case GNUTLS_E_AGAIN:
-#ifndef WIN32
+#ifdef WIN32
+ WSASetLastError (WSAEWOULDBLOCK);
+#else
errno = EAGAIN;
- break;
#endif
- /* WinSock does not return EAGAIN, return EINTR instead */
+ break;
case GNUTLS_E_INTERRUPTED:
#ifdef WIN32
}
return -1;
}
+#define gnutls_Error(o, val) gnutls_Error(VLC_OBJECT(o), val)
-struct tls_session_sys_t
+struct vlc_tls_sys
{
gnutls_session_t session;
- char *psz_hostname;
- vlc_bool_t b_handshaked;
+ gnutls_certificate_credentials_t x509_cred;
+ char *hostname;
+ bool handshaked;
};
/**
* Sends data through a TLS session.
*/
-static int
-gnutls_Send( void *p_session, const void *buf, int i_length )
+static int gnutls_Send (void *opaque, const void *buf, size_t length)
{
- int val;
- tls_session_sys_t *p_sys;
+ vlc_tls_t *session = opaque;
+ vlc_tls_sys_t *sys = session->sys;
- p_sys = (tls_session_sys_t *)(((tls_session_t *)p_session)->p_sys);
-
- val = gnutls_record_send( p_sys->session, buf, i_length );
- return (val < 0) ? gnutls_Error ((vlc_object_t *)p_session, val) : val;
+ int val = gnutls_record_send (sys->session, buf, length);
+ return (val < 0) ? gnutls_Error (session, val) : val;
}
/**
* Receives data through a TLS session.
*/
-static int
-gnutls_Recv( void *p_session, void *buf, int i_length )
+static int gnutls_Recv (void *opaque, void *buf, size_t length)
{
- int val;
- tls_session_sys_t *p_sys;
-
- p_sys = (tls_session_sys_t *)(((tls_session_t *)p_session)->p_sys);
+ vlc_tls_t *session = opaque;
+ vlc_tls_sys_t *sys = session->sys;
- val = gnutls_record_recv( p_sys->session, buf, i_length );
- return (val < 0) ? gnutls_Error ((vlc_object_t *)p_session, val) : val;
+ int val = gnutls_record_recv (sys->session, buf, length);
+ return (val < 0) ? gnutls_Error (session, val) : val;
}
/**
* Starts or continues the TLS handshake.
*
- * @return -1 on fatal error, 0 on succesful handshake completion,
+ * @return -1 on fatal error, 0 on successful handshake completion,
* 1 if more would-be blocking recv is needed,
* 2 if more would-be blocking send is required.
*/
-static int
-gnutls_ContinueHandshake (tls_session_t *p_session)
+static int gnutls_ContinueHandshake (vlc_tls_t *session)
{
- tls_session_sys_t *p_sys = p_session->p_sys;
+ vlc_tls_sys_t *sys = session->sys;
int val;
#ifdef WIN32
- WSASetLastError( 0 );
+ WSASetLastError (0);
#endif
- val = gnutls_handshake( p_sys->session );
- if( ( val == GNUTLS_E_AGAIN ) || ( val == GNUTLS_E_INTERRUPTED ) )
- return 1 + gnutls_record_get_direction( p_sys->session );
+ val = gnutls_handshake (sys->session);
+ if ((val == GNUTLS_E_AGAIN) || (val == GNUTLS_E_INTERRUPTED))
+ return 1 + gnutls_record_get_direction (sys->session);
- if( val < 0 )
+ if (val < 0)
{
#ifdef WIN32
- msg_Dbg( p_session, "Winsock error %d", WSAGetLastError( ) );
+ msg_Dbg (session, "Winsock error %d", WSAGetLastError ());
#endif
- msg_Err( p_session, "TLS handshake error: %s",
- gnutls_strerror( val ) );
+ msg_Err (session, "TLS handshake error: %s", gnutls_strerror (val));
return -1;
}
- p_sys->b_handshaked = VLC_TRUE;
+ sys->handshaked = true;
return 0;
}
"Certificate's signer is not a CA" },
{ GNUTLS_CERT_INSECURE_ALGORITHM,
"Insecure certificate signature algorithm" },
+ { GNUTLS_CERT_NOT_ACTIVATED,
+ "Certificate is not yet activated" },
+ { GNUTLS_CERT_EXPIRED,
+ "Certificate has expired" },
{ 0, NULL }
};
-static int
-gnutls_HandshakeAndValidate( tls_session_t *session )
+static int gnutls_HandshakeAndValidate (vlc_tls_t *session)
{
- int val = gnutls_ContinueHandshake( session );
- if( val )
- return val;
+ vlc_tls_sys_t *sys = session->sys;
- tls_session_sys_t *p_sys = (tls_session_sys_t *)(session->p_sys);
+ int val = gnutls_ContinueHandshake (session);
+ if (val)
+ return val;
/* certificates chain verification */
unsigned status;
- val = gnutls_certificate_verify_peers2( p_sys->session, &status );
- if( val )
+ val = gnutls_certificate_verify_peers2 (sys->session, &status);
+ if (val)
{
- msg_Err( session, "Certificate verification failed: %s",
- gnutls_strerror( val ) );
+ msg_Err (session, "Certificate verification failed: %s",
+ gnutls_strerror (val));
return -1;
}
- if( status )
+ if (status)
{
- msg_Err( session, "TLS session: access denied" );
- for( const error_msg_t *e = cert_errors; e->flag; e++ )
+ msg_Err (session, "TLS session: access denied (status 0x%X)", status);
+ for (const error_msg_t *e = cert_errors; e->flag; e++)
{
- if( status & e->flag )
+ if (status & e->flag)
{
- msg_Err( session, "%s", e->msg );
+ msg_Err (session, "%s", e->msg);
status &= ~e->flag;
}
}
- if( status )
- msg_Err( session,
- "unknown certificate error (you found a bug in VLC)" );
-
+ if (status)
+ msg_Err (session,
+ "unknown certificate error (you found a bug in VLC)");
return -1;
}
/* certificate (host)name verification */
const gnutls_datum_t *data;
- data = gnutls_certificate_get_peers (p_sys->session, &(unsigned){0});
- if( data == NULL )
+ data = gnutls_certificate_get_peers (sys->session, &(unsigned){0});
+ if (data == NULL)
{
- msg_Err( session, "Peer certificate not available" );
+ msg_Err (session, "Peer certificate not available");
return -1;
}
gnutls_x509_crt_t cert;
- val = gnutls_x509_crt_init( &cert );
- if( val )
+ val = gnutls_x509_crt_init (&cert);
+ if (val)
{
- msg_Err( session, "x509 fatal error: %s", gnutls_strerror( val ) );
+ msg_Err (session, "x509 fatal error: %s", gnutls_strerror (val));
return -1;
}
- val = gnutls_x509_crt_import( cert, data, GNUTLS_X509_FMT_DER );
- if( val )
+ val = gnutls_x509_crt_import (cert, data, GNUTLS_X509_FMT_DER);
+ if (val)
{
- msg_Err( session, "Certificate import error: %s",
- gnutls_strerror( val ) );
- goto error;
- }
-
- if( p_sys->psz_hostname != NULL )
- {
- if ( !gnutls_x509_crt_check_hostname( cert, p_sys->psz_hostname ) )
- {
- msg_Err( session, "Certificate does not match \"%s\"",
- p_sys->psz_hostname );
- goto error;
- }
- }
- else
- msg_Warn( session, "Certificate and hostname were not verified" );
-
- if( gnutls_x509_crt_get_expiration_time( cert ) < time( NULL ) )
- {
- msg_Err( session, "Certificate expired" );
+ msg_Err (session, "Certificate import error: %s",
+ gnutls_strerror (val));
goto error;
}
- if( gnutls_x509_crt_get_activation_time( cert ) > time ( NULL ) )
+ if (sys->hostname != NULL
+ && !gnutls_x509_crt_check_hostname (cert, sys->hostname))
{
- msg_Err( session, "Certificate not yet valid" );
+ msg_Err (session, "Certificate does not match \"%s\"", sys->hostname);
goto error;
}
- gnutls_x509_crt_deinit( cert );
- msg_Dbg( session, "TLS/x509 certificate verified" );
+ gnutls_x509_crt_deinit (cert);
+ msg_Dbg (session, "TLS/x509 certificate verified");
return 0;
error:
- gnutls_x509_crt_deinit( cert );
+ gnutls_x509_crt_deinit (cert);
return -1;
}
-/**
- * Sets the operating system file descriptor backend for the TLS sesison.
- *
- * @param fd stream socket already connected with the peer.
- */
-static void
-gnutls_SetFD (tls_session_t *p_session, int fd)
-{
- gnutls_transport_set_ptr (p_session->p_sys->session,
- (gnutls_transport_ptr_t)(intptr_t)fd);
-}
-
-typedef int (*tls_prio_func) (gnutls_session_t, const int *);
-
-static int
-gnutls_SetPriority (vlc_object_t *restrict obj, const char *restrict name,
- tls_prio_func func, gnutls_session_t session,
- const int *restrict values)
-{
- int val = func (session, values);
- if (val < 0)
- {
- msg_Err (obj, "cannot set %s priorities: %s", name,
- gnutls_strerror (val));
- return VLC_EGENERIC;
- }
- return VLC_SUCCESS;
-}
-
-
static int
gnutls_SessionPrioritize (vlc_object_t *obj, gnutls_session_t session)
{
- /* Note that ordering matters (on the client side) */
- static const int protos[] =
- {
- GNUTLS_TLS1_1,
- GNUTLS_TLS1_0,
- GNUTLS_SSL3,
- 0
- };
- static const int comps[] =
- {
- GNUTLS_COMP_DEFLATE,
- GNUTLS_COMP_NULL,
- 0
- };
- static const int macs[] =
- {
- GNUTLS_MAC_SHA1,
- GNUTLS_MAC_RMD160, // RIPEMD
- GNUTLS_MAC_MD5,
- //GNUTLS_MAC_MD2,
- //GNUTLS_MAC_NULL,
- 0
- };
- static const int ciphers[] =
- {
- GNUTLS_CIPHER_AES_256_CBC,
- GNUTLS_CIPHER_AES_128_CBC,
- GNUTLS_CIPHER_3DES_CBC,
- GNUTLS_CIPHER_ARCFOUR_128,
- //GNUTLS_CIPHER_DES_CBC,
- //GNUTLS_CIPHER_ARCFOUR_40,
- //GNUTLS_CIPHER_RC2_40_CBC,
- //GNUTLS_CIPHER_NULL,
- 0
- };
- static const int kx[] =
- {
- GNUTLS_KX_DHE_RSA,
- GNUTLS_KX_DHE_DSS,
- GNUTLS_KX_RSA,
- //GNUTLS_KX_RSA_EXPORT,
- //GNUTLS_KX_DHE_PSK, TODO
- //GNUTLS_KX_PSK, TODO
- //GNUTLS_KX_SRP_RSA, TODO
- //GNUTLS_KX_SRP_DSS, TODO
- //GNUTLS_KX_SRP, TODO
- //GNUTLS_KX_ANON_DH,
- 0
- };
- static const int cert_types[] =
- {
- GNUTLS_CRT_X509,
- //GNUTLS_CRT_OPENPGP, TODO
- 0
- };
+ char *priorities = var_InheritString (obj, "gnutls-priorities");
+ if (unlikely(priorities == NULL))
+ return VLC_ENOMEM;
- int val = gnutls_set_default_priority (session);
+ const char *errp;
+ int val = gnutls_priority_set_direct (session, priorities, &errp);
if (val < 0)
{
- msg_Err (obj, "cannot set default TLS priorities: %s",
+ msg_Err (obj, "cannot set TLS priorities \"%s\": %s", errp,
gnutls_strerror (val));
- return VLC_EGENERIC;
+ val = VLC_EGENERIC;
}
-
- if (gnutls_SetPriority (obj, "protocols",
- gnutls_protocol_set_priority, session, protos)
- || gnutls_SetPriority (obj, "compression algorithms",
- gnutls_compression_set_priority, session, comps)
- || gnutls_SetPriority (obj, "MAC algorithms",
- gnutls_mac_set_priority, session, macs)
- || gnutls_SetPriority (obj, "ciphers",
- gnutls_cipher_set_priority, session, ciphers)
- || gnutls_SetPriority (obj, "key exchange algorithms",
- gnutls_kx_set_priority, session, kx)
- || gnutls_SetPriority (obj, "certificate types",
- gnutls_certificate_type_set_priority, session,
- cert_types))
- return VLC_EGENERIC;
-
- return VLC_SUCCESS;
+ else
+ val = VLC_SUCCESS;
+ free (priorities);
+ return val;
}
-
-static int
-gnutls_Addx509File( vlc_object_t *p_this,
- gnutls_certificate_credentials_t cred,
- const char *psz_path, vlc_bool_t b_priv );
-
-static int
-gnutls_Addx509Directory( vlc_object_t *p_this,
- gnutls_certificate_credentials_t cred,
- const char *psz_dirname,
- vlc_bool_t b_priv )
+#ifndef WIN32
+/**
+ * Loads x509 credentials from a file descriptor (directory or regular file)
+ * and closes the descriptor.
+ */
+static void gnutls_x509_AddFD (vlc_object_t *obj,
+ gnutls_certificate_credentials_t cred,
+ int fd, bool priv, unsigned recursion)
{
- DIR* dir;
-
- if( *psz_dirname == '\0' )
- psz_dirname = ".";
-
- dir = utf8_opendir( psz_dirname );
- if( dir == NULL )
+ DIR *dir = fdopendir (fd);
+ if (dir != NULL)
{
- if (errno != ENOENT)
- {
- msg_Err (p_this, "cannot open directory (%s): %m", psz_dirname);
- return VLC_EGENERIC;
- }
+ if (recursion == 0)
+ goto skipdir;
+ recursion--;
- msg_Dbg (p_this, "creating empty certificate directory: %s",
- psz_dirname);
- utf8_mkdir (psz_dirname);
- return VLC_SUCCESS;
- }
-#ifdef S_ISLNK
- else
- {
- struct stat st1, st2;
- int fd = dirfd( dir );
-
- /*
- * Gets stats for the directory path, checks that it is not a
- * symbolic link (to avoid possibly infinite recursion), and verifies
- * that the inode is still the same, to avoid TOCTOU race condition.
- */
- if( ( fd == -1)
- || fstat( fd, &st1 ) || utf8_lstat( psz_dirname, &st2 )
- || S_ISLNK( st2.st_mode ) || ( st1.st_ino != st2.st_ino ) )
+ for (;;)
{
- closedir( dir );
- return VLC_EGENERIC;
+ char *ent = vlc_readdir (dir);
+ if (ent == NULL)
+ break;
+
+ if ((strcmp (ent, ".") == 0) || (strcmp (ent, "..") == 0))
+ {
+ free (ent);
+ continue;
+ }
+
+ int nfd = vlc_openat (fd, ent, O_RDONLY);
+ if (nfd != -1)
+ {
+ msg_Dbg (obj, "loading x509 credentials from %s...", ent);
+ gnutls_x509_AddFD (obj, cred, nfd, priv, recursion);
+ }
+ else
+ msg_Dbg (obj, "cannot access x509 credentials in %s", ent);
+ free (ent);
}
+ skipdir:
+ closedir (dir);
+ return;
+ }
+
+ block_t *block = block_File (fd);
+ if (block != NULL)
+ {
+ gnutls_datum_t data = {
+ .data = block->p_buffer,
+ .size = block->i_buffer,
+ };
+ int res = priv
+ ? gnutls_certificate_set_x509_key_mem (cred, &data, &data,
+ GNUTLS_X509_FMT_PEM)
+ : gnutls_certificate_set_x509_trust_mem (cred, &data,
+ GNUTLS_X509_FMT_PEM);
+ block_Release (block);
+
+ if (res < 0)
+ msg_Warn (obj, "cannot add x509 credentials: %s",
+ gnutls_strerror (res));
+ else
+ msg_Dbg (obj, "added %d %s(s)", res, priv ? "key" : "certificate");
}
-#endif
+ else
+ msg_Warn (obj, "cannot read x509 credentials: %m");
+ close (fd);
+}
- for (;;)
+static void gnutls_x509_AddPath (vlc_object_t *obj,
+ gnutls_certificate_credentials_t cred,
+ const char *path, bool priv)
+{
+ msg_Dbg (obj, "loading x509 credentials in %s...", path);
+ int fd = vlc_open (path, O_RDONLY);
+ if (fd == -1)
{
- char *ent = utf8_readdir (dir);
- if (ent == NULL)
- break;
-
- if ((strcmp (ent, ".") == 0) || (strcmp (ent, "..") == 0))
- continue;
-
- char path[strlen (psz_dirname) + strlen (ent) + 2];
- sprintf (path, "%s"DIR_SEP"%s", psz_dirname, ent);
- free (ent);
-
- gnutls_Addx509File( p_this, cred, path, b_priv );
+ msg_Warn (obj, "cannot access x509 in %s: %m", path);
+ return;
}
- closedir( dir );
- return VLC_SUCCESS;
+ gnutls_x509_AddFD (obj, cred, fd, priv, 5);
}
-
-
+#else /* WIN32 */
static int
-gnutls_Addx509File( vlc_object_t *p_this,
- gnutls_certificate_credentials cred,
- const char *psz_path, vlc_bool_t b_priv )
+gnutls_loadOSCAList (vlc_object_t *p_this,
+ gnutls_certificate_credentials cred)
{
- struct stat st;
+ HCERTSTORE hCertStore = CertOpenSystemStoreA((HCRYPTPROV)NULL, "ROOT");
+ if (!hCertStore)
+ {
+ msg_Warn (p_this, "could not open the Cert SystemStore");
+ return VLC_EGENERIC;
+ }
- if( utf8_stat( psz_path, &st ) == 0 )
+ PCCERT_CONTEXT pCertContext = CertEnumCertificatesInStore(hCertStore, NULL);
+ while( pCertContext )
{
- if( S_ISREG( st.st_mode ) )
- {
- char *psz_localname = ToLocale( psz_path );
- int i = b_priv
- ? gnutls_certificate_set_x509_key_file( cred,
- psz_localname, psz_localname, GNUTLS_X509_FMT_PEM )
- : gnutls_certificate_set_x509_trust_file( cred,
- psz_localname, GNUTLS_X509_FMT_PEM );
- LocaleFree( psz_localname );
-
- if( i < 0 )
- {
- msg_Warn( p_this, "cannot add x509 credentials (%s): %s",
- psz_path, gnutls_strerror( i ) );
- return VLC_EGENERIC;
- }
- else
- {
- msg_Dbg( p_this, "added x509 credentials (%s)",
- psz_path );
- return VLC_SUCCESS;
- }
- }
- else if( S_ISDIR( st.st_mode ) )
+ gnutls_datum data = {
+ .data = pCertContext->pbCertEncoded,
+ .size = pCertContext->cbCertEncoded,
+ };
+
+ if(!gnutls_certificate_set_x509_trust_mem(cred, &data, GNUTLS_X509_FMT_DER))
{
- msg_Dbg( p_this,
- "looking recursively for x509 credentials in %s",
- psz_path );
- return gnutls_Addx509Directory( p_this, cred, psz_path, b_priv);
+ msg_Warn (p_this, "cannot add x509 credential");
+ return VLC_EGENERIC;
}
+
+ pCertContext = CertEnumCertificatesInStore(hCertStore, pCertContext);
}
- else
- msg_Warn( p_this, "cannot add x509 credentials (%s): %m", psz_path );
- return VLC_EGENERIC;
+ return VLC_SUCCESS;
}
-
-
-/** TLS client session data */
-typedef struct tls_client_sys_t
-{
- struct tls_session_sys_t session;
- gnutls_certificate_credentials_t x509_cred;
-} tls_client_sys_t;
-
+#endif /* WIN32 */
/**
* Initializes a client-side TLS session.
*/
-static int OpenClient (vlc_object_t *obj)
+static int OpenClient (vlc_tls_t *session, int fd, const char *hostname)
{
- tls_session_t *p_session = (tls_session_t *)obj;
- int i_val;
-
- if (gnutls_Init (obj))
+ if (gnutls_Init (VLC_OBJECT(session)))
return VLC_EGENERIC;
- tls_client_sys_t *p_sys = malloc (sizeof (*p_sys));
- if (p_sys == NULL)
+ vlc_tls_sys_t *sys = malloc (sizeof (*sys));
+ if (unlikely(sys == NULL))
{
- gnutls_Deinit (obj);
+ gnutls_Deinit (VLC_OBJECT(session));
return VLC_ENOMEM;
}
- p_session->p_sys = &p_sys->session;
- p_session->sock.p_sys = p_session;
- p_session->sock.pf_send = gnutls_Send;
- p_session->sock.pf_recv = gnutls_Recv;
- p_session->pf_set_fd = gnutls_SetFD;
-
- p_sys->session.b_handshaked = VLC_FALSE;
- p_sys->session.psz_hostname = NULL;
+ session->sys = sys;
+ session->sock.p_sys = session;
+ session->sock.pf_send = gnutls_Send;
+ session->sock.pf_recv = gnutls_Recv;
+ sys->handshaked = false;
- const char *homedir = obj->p_libvlc->psz_datadir,
- *datadir = config_GetDataDir ();
- size_t l1 = strlen (homedir), l2 = strlen (datadir);
- char path[((l1 > l2) ? l1 : l2) + sizeof ("/ca-certificates.crt")];
- // > sizeof ("/ssl/private")
- // > sizeof ("/ssl/certs")
-
- i_val = gnutls_certificate_allocate_credentials (&p_sys->x509_cred);
- if (i_val != 0)
+ int val = gnutls_certificate_allocate_credentials (&sys->x509_cred);
+ if (val != 0)
{
- msg_Err (obj, "cannot allocate X509 credentials: %s",
- gnutls_strerror (i_val));
+ msg_Err (session, "cannot allocate X509 credentials: %s",
+ gnutls_strerror (val));
goto error;
}
- sprintf (path, "%s/ssl", homedir);
- utf8_mkdir (path);
+#ifndef WIN32
+ char *userdir = config_GetUserDir (VLC_DATA_DIR);
+ if (userdir != NULL)
+ {
+ char path[strlen (userdir) + sizeof ("/ssl/private/")];
+ sprintf (path, "%s/ssl", userdir);
+ vlc_mkdir (path, 0755);
+
+ sprintf (path, "%s/ssl/certs/", userdir);
+ gnutls_x509_AddPath (VLC_OBJECT(session), sys->x509_cred, path, false);
+ sprintf (path, "%s/ssl/private/", userdir);
+ gnutls_x509_AddPath (VLC_OBJECT(session), sys->x509_cred, path, true);
+ free (userdir);
+ }
- if (var_CreateGetBool (obj, "tls-check-cert"))
+ const char *confdir = config_GetConfDir ();
{
- sprintf (path, "%s/ssl/certs", homedir);
- gnutls_Addx509Directory (VLC_OBJECT (p_session),
- p_sys->x509_cred, path, VLC_FALSE);
-
- sprintf (path, "%s/ca-certificates.crt", datadir);
- gnutls_Addx509File (VLC_OBJECT (p_session),
- p_sys->x509_cred, path, VLC_FALSE);
- p_session->pf_handshake = gnutls_HandshakeAndValidate;
+ char path[strlen (confdir)
+ + sizeof ("/ssl/certs/ca-certificates.crt")];
+ sprintf (path, "%s/ssl/certs/ca-certificates.crt", confdir);
+ gnutls_x509_AddPath (VLC_OBJECT(session), sys->x509_cred, path, false);
}
- else
- p_session->pf_handshake = gnutls_ContinueHandshake;
+#else /* WIN32 */
+ gnutls_loadOSCAList (VLC_OBJECT(session), sys->x509_cred);
+#endif
+ gnutls_certificate_set_verify_flags (sys->x509_cred,
+ GNUTLS_VERIFY_ALLOW_X509_V1_CA_CRT);
- sprintf (path, "%s/ssl/private", homedir);
- gnutls_Addx509Directory (VLC_OBJECT (p_session), p_sys->x509_cred,
- path, VLC_TRUE);
+ session->handshake = gnutls_HandshakeAndValidate;
+ /*session->_handshake = gnutls_ContinueHandshake;*/
- i_val = gnutls_init (&p_sys->session.session, GNUTLS_CLIENT);
- if (i_val != 0)
+ val = gnutls_init (&sys->session, GNUTLS_CLIENT);
+ if (val != 0)
{
- msg_Err (obj, "cannot initialize TLS session: %s",
- gnutls_strerror (i_val));
- gnutls_certificate_free_credentials (p_sys->x509_cred);
+ msg_Err (session, "cannot initialize TLS session: %s",
+ gnutls_strerror (val));
+ gnutls_certificate_free_credentials (sys->x509_cred);
goto error;
}
- if (gnutls_SessionPrioritize (VLC_OBJECT (p_session),
- p_sys->session.session))
+ if (gnutls_SessionPrioritize (VLC_OBJECT(session), sys->session))
goto s_error;
- i_val = gnutls_credentials_set (p_sys->session.session,
- GNUTLS_CRD_CERTIFICATE,
- p_sys->x509_cred);
- if (i_val < 0)
+ /* minimum DH prime bits */
+ gnutls_dh_set_prime_bits (sys->session, 1024);
+
+ val = gnutls_credentials_set (sys->session, GNUTLS_CRD_CERTIFICATE,
+ sys->x509_cred);
+ if (val < 0)
{
- msg_Err (obj, "cannot set TLS session credentials: %s",
- gnutls_strerror (i_val));
+ msg_Err (session, "cannot set TLS session credentials: %s",
+ gnutls_strerror (val));
goto s_error;
}
- char *servername = var_GetNonEmptyString (p_session, "tls-server-name");
- if (servername != NULL )
+ /* server name */
+ if (likely(hostname != NULL))
{
- p_sys->session.psz_hostname = servername;
- gnutls_server_name_set (p_sys->session.session, GNUTLS_NAME_DNS,
- servername, strlen (servername));
+ /* fill Server Name Indication */
+ gnutls_server_name_set (sys->session, GNUTLS_NAME_DNS,
+ hostname, strlen (hostname));
+ /* keep hostname to match CNAME after handshake */
+ sys->hostname = strdup (hostname);
+ if (unlikely(sys->hostname == NULL))
+ goto s_error;
}
+ else
+ sys->hostname = NULL;
+ gnutls_transport_set_ptr (sys->session,
+ (gnutls_transport_ptr_t)(intptr_t)fd);
return VLC_SUCCESS;
s_error:
- gnutls_deinit (p_sys->session.session);
- gnutls_certificate_free_credentials (p_sys->x509_cred);
+ gnutls_deinit (sys->session);
+ gnutls_certificate_free_credentials (sys->x509_cred);
error:
- gnutls_Deinit (obj);
- free (p_sys);
+ gnutls_Deinit (VLC_OBJECT(session));
+ free (sys);
return VLC_EGENERIC;
}
-static void CloseClient (vlc_object_t *obj)
+static void CloseClient (vlc_tls_t *session)
{
- tls_session_t *client = (tls_session_t *)obj;
- tls_client_sys_t *p_sys = (tls_client_sys_t *)(client->p_sys);
+ vlc_tls_sys_t *sys = session->sys;
- if (p_sys->session.b_handshaked == VLC_TRUE)
- gnutls_bye (p_sys->session.session, GNUTLS_SHUT_WR);
- gnutls_deinit (p_sys->session.session);
+ if (sys->handshaked)
+ gnutls_bye (sys->session, GNUTLS_SHUT_WR);
+ gnutls_deinit (sys->session);
/* credentials must be free'd *after* gnutls_deinit() */
- gnutls_certificate_free_credentials (p_sys->x509_cred);
+ gnutls_certificate_free_credentials (sys->x509_cred);
- gnutls_Deinit (obj);
- free (p_sys->session.psz_hostname);
- free (p_sys);
+ gnutls_Deinit (VLC_OBJECT(session));
+ free (sys->hostname);
+ free (sys);
}
/**
* Server-side TLS
*/
-struct tls_server_sys_t
+struct vlc_tls_creds_sys
{
gnutls_certificate_credentials_t x509_cred;
gnutls_dh_params_t dh_params;
-
- struct saved_session_t *p_cache;
- struct saved_session_t *p_store;
- int i_cache_size;
- vlc_mutex_t cache_lock;
-
- int (*pf_handshake) (tls_session_t *);
+ int (*handshake) (vlc_tls_t *);
};
-/**
- * TLS session resumption callbacks (server-side)
- */
-#define MAX_SESSION_ID 32
-#define MAX_SESSION_DATA 1024
-
-typedef struct saved_session_t
-{
- char id[MAX_SESSION_ID];
- char data[MAX_SESSION_DATA];
-
- unsigned i_idlen;
- unsigned i_datalen;
-} saved_session_t;
-
-
-static int cb_store( void *p_server, gnutls_datum key, gnutls_datum data )
-{
- tls_server_sys_t *p_sys = ((tls_server_t *)p_server)->p_sys;
-
- if( ( p_sys->i_cache_size == 0 )
- || ( key.size > MAX_SESSION_ID )
- || ( data.size > MAX_SESSION_DATA ) )
- return -1;
-
- vlc_mutex_lock( &p_sys->cache_lock );
-
- memcpy( p_sys->p_store->id, key.data, key.size);
- memcpy( p_sys->p_store->data, data.data, data.size );
- p_sys->p_store->i_idlen = key.size;
- p_sys->p_store->i_datalen = data.size;
-
- p_sys->p_store++;
- if( ( p_sys->p_store - p_sys->p_cache ) == p_sys->i_cache_size )
- p_sys->p_store = p_sys->p_cache;
-
- vlc_mutex_unlock( &p_sys->cache_lock );
-
- return 0;
-}
-
-
-static gnutls_datum cb_fetch( void *p_server, gnutls_datum key )
-{
- static const gnutls_datum_t err_datum = { NULL, 0 };
- tls_server_sys_t *p_sys = ((tls_server_t *)p_server)->p_sys;
- saved_session_t *p_session, *p_end;
-
- p_session = p_sys->p_cache;
- p_end = p_session + p_sys->i_cache_size;
-
- vlc_mutex_lock( &p_sys->cache_lock );
-
- while( p_session < p_end )
- {
- if( ( p_session->i_idlen == key.size )
- && !memcmp( p_session->id, key.data, key.size ) )
- {
- gnutls_datum_t data;
-
- data.size = p_session->i_datalen;
-
- data.data = gnutls_malloc( data.size );
- if( data.data == NULL )
- {
- vlc_mutex_unlock( &p_sys->cache_lock );
- return err_datum;
- }
-
- memcpy( data.data, p_session->data, data.size );
- vlc_mutex_unlock( &p_sys->cache_lock );
- return data;
- }
- p_session++;
- }
-
- vlc_mutex_unlock( &p_sys->cache_lock );
-
- return err_datum;
-}
-
-
-static int cb_delete( void *p_server, gnutls_datum key )
-{
- tls_server_sys_t *p_sys = ((tls_server_t *)p_server)->p_sys;
- saved_session_t *p_session, *p_end;
-
- p_session = p_sys->p_cache;
- p_end = p_session + p_sys->i_cache_size;
-
- vlc_mutex_lock( &p_sys->cache_lock );
-
- while( p_session < p_end )
- {
- if( ( p_session->i_idlen == key.size )
- && !memcmp( p_session->id, key.data, key.size ) )
- {
- p_session->i_datalen = p_session->i_idlen = 0;
- vlc_mutex_unlock( &p_sys->cache_lock );
- return 0;
- }
- p_session++;
- }
-
- vlc_mutex_unlock( &p_sys->cache_lock );
-
- return -1;
-}
-
-
/**
* Terminates TLS session and releases session data.
* You still have to close the socket yourself.
*/
-static void
-gnutls_SessionClose (tls_server_t *p_server, tls_session_t *p_session)
+static void gnutls_SessionClose (vlc_tls_t *session)
{
- tls_session_sys_t *p_sys = p_session->p_sys;
- (void)p_server;
-
- if( p_sys->b_handshaked == VLC_TRUE )
- gnutls_bye( p_sys->session, GNUTLS_SHUT_WR );
- gnutls_deinit( p_sys->session );
+ vlc_tls_sys_t *sys = session->sys;
- vlc_object_detach( p_session );
- vlc_object_destroy( p_session );
+ if (sys->handshaked)
+ gnutls_bye (sys->session, GNUTLS_SHUT_WR);
+ gnutls_deinit (sys->session);
- free( p_sys );
+ vlc_object_release (session);
+ free (sys);
}
/**
* Initializes a server-side TLS session.
*/
-static tls_session_t *
-gnutls_ServerSessionPrepare( tls_server_t *p_server )
+static vlc_tls_t *gnutls_SessionOpen (vlc_tls_creds_t *server, int fd)
{
- tls_session_t *p_session;
- tls_server_sys_t *p_server_sys;
- gnutls_session_t session;
- int i_val;
+ vlc_tls_creds_sys_t *ssys = server->sys;
+ int val;
- p_session = vlc_object_create( p_server, sizeof (struct tls_session_t) );
- if( p_session == NULL )
+ vlc_tls_t *session = vlc_object_create (server, sizeof (*session));
+ if (unlikely(session == NULL))
return NULL;
- p_session->p_sys = malloc( sizeof(struct tls_session_sys_t) );
- if( p_session->p_sys == NULL )
+ vlc_tls_sys_t *sys = malloc (sizeof (*session->sys));
+ if (unlikely(sys == NULL))
{
- vlc_object_destroy( p_session );
+ vlc_object_release (session);
return NULL;
}
- p_server_sys = p_server->p_sys;
- p_session->sock.p_sys = p_session;
- p_session->sock.pf_send = gnutls_Send;
- p_session->sock.pf_recv = gnutls_Recv;
- p_session->pf_set_fd = gnutls_SetFD;
- p_session->pf_handshake = p_server_sys->pf_handshake;
+ session->sys = sys;
+ session->sock.p_sys = session;
+ session->sock.pf_send = gnutls_Send;
+ session->sock.pf_recv = gnutls_Recv;
+ session->handshake = ssys->handshake;
+ session->u.close = gnutls_SessionClose;
+ sys->handshaked = false;
+ sys->hostname = NULL;
- p_session->p_sys->b_handshaked = VLC_FALSE;
- p_session->p_sys->psz_hostname = NULL;
-
- i_val = gnutls_init( &session, GNUTLS_SERVER );
- if( i_val != 0 )
+ val = gnutls_init (&sys->session, GNUTLS_SERVER);
+ if (val != 0)
{
- msg_Err( p_server, "cannot initialize TLS session: %s",
- gnutls_strerror( i_val ) );
- goto error;
+ msg_Err (server, "cannot initialize TLS session: %s",
+ gnutls_strerror (val));
+ free (sys);
+ vlc_object_release (session);
+ return NULL;
}
- p_session->p_sys->session = session;
-
- if (gnutls_SessionPrioritize (VLC_OBJECT (p_session), session))
- {
- gnutls_deinit( session );
+ if (gnutls_SessionPrioritize (VLC_OBJECT (server), sys->session))
goto error;
- }
- i_val = gnutls_credentials_set( session, GNUTLS_CRD_CERTIFICATE,
- p_server_sys->x509_cred );
- if( i_val < 0 )
+ val = gnutls_credentials_set (sys->session, GNUTLS_CRD_CERTIFICATE,
+ ssys->x509_cred);
+ if (val < 0)
{
- msg_Err( p_server, "cannot set TLS session credentials: %s",
- gnutls_strerror( i_val ) );
- gnutls_deinit( session );
+ msg_Err (server, "cannot set TLS session credentials: %s",
+ gnutls_strerror (val));
goto error;
}
- if (p_session->pf_handshake == gnutls_HandshakeAndValidate)
- gnutls_certificate_server_set_request (session, GNUTLS_CERT_REQUIRE);
-
- i_val = config_GetInt (p_server, "gnutls-dh-bits");
- gnutls_dh_set_prime_bits (session, i_val);
+ if (session->handshake == gnutls_HandshakeAndValidate)
+ gnutls_certificate_server_set_request (sys->session,
+ GNUTLS_CERT_REQUIRE);
- /* Session resumption support */
- i_val = config_GetInt (p_server, "gnutls-cache-timeout");
- gnutls_db_set_cache_expiration (session, i_val);
- gnutls_db_set_retrieve_function( session, cb_fetch );
- gnutls_db_set_remove_function( session, cb_delete );
- gnutls_db_set_store_function( session, cb_store );
- gnutls_db_set_ptr( session, p_server );
-
- return p_session;
+ gnutls_transport_set_ptr (sys->session,
+ (gnutls_transport_ptr_t)(intptr_t)fd);
+ return session;
error:
- free( p_session->p_sys );
- vlc_object_detach( p_session );
- vlc_object_destroy( p_session );
+ gnutls_SessionClose (session);
return NULL;
}
/**
* Adds one or more certificate authorities.
*
- * @param psz_ca_path (Unicode) path to an x509 certificates list.
+ * @param ca_path (Unicode) path to an x509 certificates list.
*
* @return -1 on error, 0 on success.
*/
-static int
-gnutls_ServerAddCA( tls_server_t *p_server, const char *psz_ca_path )
+static int gnutls_ServerAddCA (vlc_tls_creds_t *server, const char *ca_path)
{
- tls_server_sys_t *p_sys;
- char *psz_local_path;
- int val;
-
- p_sys = (tls_server_sys_t *)(p_server->p_sys);
+ vlc_tls_creds_sys_t *sys = server->sys;
+ const char *local_path = ToLocale (ca_path);
- psz_local_path = ToLocale( psz_ca_path );
- val = gnutls_certificate_set_x509_trust_file( p_sys->x509_cred,
- psz_local_path,
- GNUTLS_X509_FMT_PEM );
- LocaleFree( psz_local_path );
- if( val < 0 )
+ int val = gnutls_certificate_set_x509_trust_file (sys->x509_cred,
+ local_path,
+ GNUTLS_X509_FMT_PEM );
+ LocaleFree (local_path);
+ if (val < 0)
{
- msg_Err( p_server, "cannot add trusted CA (%s): %s", psz_ca_path,
- gnutls_strerror( val ) );
+ msg_Err (server, "cannot add trusted CA (%s): %s", ca_path,
+ gnutls_strerror (val));
return VLC_EGENERIC;
}
- msg_Dbg( p_server, " %d trusted CA added (%s)", val, psz_ca_path );
+ msg_Dbg (server, " %d trusted CA added (%s)", val, ca_path);
/* enables peer's certificate verification */
- p_sys->pf_handshake = gnutls_HandshakeAndValidate;
+ sys->handshake = gnutls_HandshakeAndValidate;
return VLC_SUCCESS;
}
/**
* Adds a certificates revocation list to be sent to TLS clients.
*
- * @param psz_crl_path (Unicode) path of the CRL file.
+ * @param crl_path (Unicode) path of the CRL file.
*
* @return -1 on error, 0 on success.
*/
-static int
-gnutls_ServerAddCRL( tls_server_t *p_server, const char *psz_crl_path )
+static int gnutls_ServerAddCRL (vlc_tls_creds_t *server, const char *crl_path)
{
- int val;
- char *psz_local_path = ToLocale( psz_crl_path );
-
- val = gnutls_certificate_set_x509_crl_file( ((tls_server_sys_t *)
- (p_server->p_sys))->x509_cred,
- psz_local_path,
- GNUTLS_X509_FMT_PEM );
- LocaleFree( psz_crl_path );
- if( val < 0 )
+ vlc_tls_creds_sys_t *sys = server->sys;
+ const char *local_path = ToLocale (crl_path);
+
+ int val = gnutls_certificate_set_x509_crl_file (sys->x509_cred,
+ local_path,
+ GNUTLS_X509_FMT_PEM);
+ LocaleFree (local_path);
+ if (val < 0)
{
- msg_Err( p_server, "cannot add CRL (%s): %s", psz_crl_path,
- gnutls_strerror( val ) );
+ msg_Err (server, "cannot add CRL (%s): %s", crl_path,
+ gnutls_strerror (val));
return VLC_EGENERIC;
}
- msg_Dbg( p_server, "%d CRL added (%s)", val, psz_crl_path );
+ msg_Dbg (server, "%d CRL added (%s)", val, crl_path);
return VLC_SUCCESS;
}
*/
static int OpenServer (vlc_object_t *obj)
{
- tls_server_t *p_server = (tls_server_t *)obj;
- tls_server_sys_t *p_sys;
+ vlc_tls_creds_t *server = (vlc_tls_creds_t *)obj;
int val;
if (gnutls_Init (obj))
msg_Dbg (obj, "creating TLS server");
- p_sys = (tls_server_sys_t *)malloc( sizeof(struct tls_server_sys_t) );
- if( p_sys == NULL )
- return VLC_ENOMEM;
-
- p_sys->i_cache_size = config_GetInt (obj, "gnutls-cache-size");
- p_sys->p_cache = calloc (p_sys->i_cache_size,
- sizeof (struct saved_session_t));
- if (p_sys->p_cache == NULL)
- {
- free (p_sys);
+ vlc_tls_creds_sys_t *sys = malloc (sizeof (*sys));
+ if (unlikely(sys == NULL))
return VLC_ENOMEM;
- }
-
- p_sys->p_store = p_sys->p_cache;
- p_server->p_sys = p_sys;
- p_server->pf_add_CA = gnutls_ServerAddCA;
- p_server->pf_add_CRL = gnutls_ServerAddCRL;
- p_server->pf_open = gnutls_ServerSessionPrepare;
- p_server->pf_close = gnutls_SessionClose;
+ server->sys = sys;
+ server->add_CA = gnutls_ServerAddCA;
+ server->add_CRL = gnutls_ServerAddCRL;
+ server->open = gnutls_SessionOpen;
/* No certificate validation by default */
- p_sys->pf_handshake = gnutls_ContinueHandshake;
-
- vlc_mutex_init( p_server, &p_sys->cache_lock );
+ sys->handshake = gnutls_ContinueHandshake;
/* Sets server's credentials */
- val = gnutls_certificate_allocate_credentials( &p_sys->x509_cred );
- if( val != 0 )
+ val = gnutls_certificate_allocate_credentials (&sys->x509_cred);
+ if (val != 0)
{
- msg_Err( p_server, "cannot allocate X509 credentials: %s",
- gnutls_strerror( val ) );
+ msg_Err (server, "cannot allocate X509 credentials: %s",
+ gnutls_strerror (val));
goto error;
}
- char *psz_cert_path = var_GetNonEmptyString (obj, "tls-x509-cert");
- char *psz_key_path = var_GetNonEmptyString (obj, "tls-x509-key");
- const char *psz_local_cert = ToLocale (psz_cert_path);
- const char *psz_local_key = ToLocale (psz_key_path);
- val = gnutls_certificate_set_x509_key_file (p_sys->x509_cred,
- psz_local_cert, psz_local_key,
- GNUTLS_X509_FMT_PEM );
- LocaleFree (psz_key_path);
- free (psz_key_path);
- LocaleFree (psz_cert_path);
- free (psz_cert_path);
-
- if( val < 0 )
+ char *cert_path = var_GetNonEmptyString (obj, "tls-x509-cert");
+ char *key_path = var_GetNonEmptyString (obj, "tls-x509-key");
+ const char *lcert = ToLocale (cert_path);
+ const char *lkey = ToLocale (key_path);
+ val = gnutls_certificate_set_x509_key_file (sys->x509_cred, lcert, lkey,
+ GNUTLS_X509_FMT_PEM);
+ LocaleFree (lkey);
+ LocaleFree (lcert);
+ free (key_path);
+ free (cert_path);
+
+ if (val < 0)
{
- msg_Err( p_server, "cannot set certificate chain or private key: %s",
- gnutls_strerror( val ) );
- gnutls_certificate_free_credentials( p_sys->x509_cred );
+ msg_Err (server, "cannot set certificate chain or private key: %s",
+ gnutls_strerror (val));
+ gnutls_certificate_free_credentials (sys->x509_cred);
goto error;
}
/* FIXME:
- * - regenerate these regularly
- * - support other ciper suites
+ * - support other cipher suites
*/
- val = gnutls_dh_params_init( &p_sys->dh_params );
- if( val >= 0 )
+ val = gnutls_dh_params_init (&sys->dh_params);
+ if (val >= 0)
{
- msg_Dbg( p_server, "computing DHE ciphers parameters" );
- val = gnutls_dh_params_generate2 (p_sys->dh_params,
- config_GetInt (obj, "gnutls-dh-bits"));
-
- /* Write the DH parameter to cache */
- const char *cachedir = p_server->p_libvlc->psz_cachedir;
- char cachefile[strlen (cachedir) + sizeof ("/dh_params.pem")];
- sprintf (cachefile, "%s/dh_params.pem", cachedir);
-
- FILE *cache = utf8_fopen (cachefile, "wb");
- if (cache != NULL)
- {
- size_t len = 0;
- gnutls_dh_params_export_pkcs3 (p_sys->dh_params,
- GNUTLS_X509_FMT_PEM, NULL, &len);
- msg_Dbg (p_server, "caching DHE parameters (%u bytes) to %s",
- (unsigned)len, cachefile);
-
- unsigned char buf[len];
- gnutls_dh_params_export_pkcs3 (p_sys->dh_params,
- GNUTLS_X509_FMT_PEM, buf, &len);
- if (fwrite (buf, 1, len, cache) != len)
- msg_Warn (p_server, "cannot write to %s: %m", cachefile);
- fclose (cache);
- }
- else
- msg_Warn (p_server, "cannot open to %s: %m", cachefile);
+ const gnutls_datum_t data = {
+ .data = (unsigned char *)dh_params,
+ .size = sizeof (dh_params) - 1,
+ };
+ val = gnutls_dh_params_import_pkcs3 (sys->dh_params, &data,
+ GNUTLS_X509_FMT_PEM);
+ if (val == 0)
+ gnutls_certificate_set_dh_params (sys->x509_cred,
+ sys->dh_params);
}
- if( val < 0 )
+ if (val < 0)
{
- msg_Err( p_server, "cannot initialize DHE cipher suites: %s",
- gnutls_strerror( val ) );
- gnutls_certificate_free_credentials( p_sys->x509_cred );
- goto error;
+ msg_Err (server, "cannot initialize DHE cipher suites: %s",
+ gnutls_strerror (val));
}
- msg_Dbg( p_server, "ciphers parameters computed" );
-
- gnutls_certificate_set_dh_params( p_sys->x509_cred, p_sys->dh_params);
return VLC_SUCCESS;
error:
- vlc_mutex_destroy (&p_sys->cache_lock);
- free (p_sys->p_cache);
- free (p_sys);
+ free (sys);
return VLC_EGENERIC;
}
/**
* Destroys a TLS server object.
*/
-static void CloseServer (vlc_object_t *p_server)
+static void CloseServer (vlc_object_t *obj)
{
- tls_server_sys_t *p_sys = ((tls_server_t *)p_server)->p_sys;
-
- vlc_mutex_destroy (&p_sys->cache_lock);
- free (p_sys->p_cache);
+ vlc_tls_creds_t *server = (vlc_tls_creds_t *)obj;
+ vlc_tls_creds_sys_t *sys = server->sys;
/* all sessions depending on the server are now deinitialized */
- gnutls_certificate_free_credentials (p_sys->x509_cred);
- gnutls_dh_params_deinit (p_sys->dh_params);
- free (p_sys);
+ gnutls_certificate_free_credentials (sys->x509_cred);
+ gnutls_dh_params_deinit (sys->dh_params);
+ free (sys);
- gnutls_Deinit (p_server);
+ gnutls_Deinit (obj);
}