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-rw-r--r--drivers/openssl/stream_peer_ssl.cpp168
-rw-r--r--drivers/openssl/stream_peer_ssl.h37
2 files changed, 104 insertions, 101 deletions
diff --git a/drivers/openssl/stream_peer_ssl.cpp b/drivers/openssl/stream_peer_ssl.cpp
index aaedd7dde9..19a17ea0cd 100644
--- a/drivers/openssl/stream_peer_ssl.cpp
+++ b/drivers/openssl/stream_peer_ssl.cpp
@@ -1,111 +1,97 @@
#include "stream_peer_ssl.h"
-int StreamPeerSSL::bio_create( BIO *b ) {
- b->init = 1;
- b->num = 0;
- b->ptr = NULL;
- b->flags = 0;
- return 1;
-}
-
-int StreamPeerSSL::bio_destroy( BIO *b ) {
-
- if ( b == NULL ) return 0;
- b->ptr = NULL; /* sb_tls_remove() will free it */
- b->init = 0;
- b->flags = 0;
- return 1;
-}
-
-int StreamPeerSSL::bio_read( BIO *b, char *buf, int len ) {
-
- if ( buf == NULL || len <= 0 ) return 0;
-
- StreamPeerSSL * sp = (StreamPeerSSL*)b->ptr;
+Error StreamPeerSSL::connect(const String &p_host,int p_port,int p_flags) {
- if (sp->base.is_null())
- return 0;
-
-
-
- BIO_clear_retry_flags( b );
-
- Error err;
- int ret=0;
- if (sp->block) {
- err = sp->base->get_data((const uint8_t*)buf,len);
- if (err==OK)
- ret=len;
- } else {
-
- err = sp->base->get_partial_data((const uint8_t*)buf,len,ret);
- if (err==OK && ret!=len) {
- BIO_set_retry_write( b );
- }
+ // Set up a SSL_CTX object, which will tell our BIO object how to do its work
+ ctx = SSL_CTX_new(SSLv23_client_method());
+ // Create our BIO object for SSL connections.
+ BIO* bio = BIO_new_ssl_connect(ctx);
+ // Failure?
+ if (bio == NULL) {
+ // We need to free up the SSL_CTX before we leave.
+ ERR_FAIL_COND_V(bio==NULL,ERR_CANT_CREATE);
+ }
+ // Makes ssl point to bio's SSL object.
+ BIO_get_ssl(bio, &ssl);
+ // Set the SSL to automatically retry on failure.
+ SSL_set_mode(ssl, SSL_MODE_AUTO_RETRY);
+ // We're connection to google.com on port 443.
+ BIO_set_conn_hostname(bio, (p_host+":"+itos(p_port)).utf8().get_data());
+
+ // Same as before, try to connect.
+ if (BIO_do_connect(bio) <= 0) {
+
+ ERR_EXPLAIN("Failed to connect to '"+p_host+"'' port "+itos(p_port));
+ BIO_free_all(bio);
+ SSL_CTX_free(ctx);
+ ERR_FAIL_V(ERR_CANT_CONNECT);
}
- return ret;
-}
-
-int StreamPeerSSL::bio_write( BIO *b, const char *buf, int len ) {
-
- if ( buf == NULL || len <= 0 ) return 0;
-
- StreamPeerSSL * sp = (StreamPeerSSL*)b->ptr;
-
- if (sp->base.is_null())
- return 0;
-
- BIO_clear_retry_flags( b );
+ // Now we need to do the SSL handshake, so we can communicate.
+ if (BIO_do_handshake(bio) <= 0) {
+ ERR_EXPLAIN("Failed to handshake to '"+p_host+"'' port "+itos(p_port));
+ BIO_free_all(bio);
+ SSL_CTX_free(ctx);
+ ERR_FAIL_V(ERR_CANT_CONNECT);
+ }
- Error err;
- int wrote=0;
- if (sp->block) {
- err = sp->base->put_data((const uint8_t*)buf,len);
- if (err==OK)
- wrote=len;
- } else {
- err = sp->base->put_partial_data((const uint8_t*)buf,len,wrote);
- if (err==OK && wrote!=len) {
- BIO_set_retry_write( b );
+ // Create a buffer for grabbing information from the page.
+ char buf[1024];
+ memset(buf, 0, sizeof(buf));
+ // Create a buffer for the reqest we'll send to the server
+ char send[1024];
+ memset(send, 0, sizeof(send));
+ // Create our GET request.
+ strcat(send, "GET / HTTP/1.1\nHost:google.com\nUser Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0)\nConnection: Close\n\n");
+ // BIO_puts sends a null-terminated string to the server. In this case it's our GET request.
+ BIO_puts(bio, send);
+ // Loop while there's information to be read.
+ while (1) {
+ // BIO_read() reads data from the server into a buffer. It returns the number of characters read in.
+ int x = BIO_read(bio, buf, sizeof(buf) - 1);
+ // If we haven't read in anything, assume there's nothing more to be sent since we used Connection: Close.
+ if (x == 0) {
+ break;
+ }
+ // If BIO_read() returns a negative number, there was an error
+ else if (x < 0) {
+ // BIO_should_retry lets us know if we should keep trying to read data or not.
+ if (!BIO_should_retry(bio)) {
+ printf("\nRead Failed!\n");
+ BIO_free_all(bio);
+ SSL_CTX_free(ctx);
+ return;
+ }
+ }
+ // We actually got some data, without errors!
+ else {
+ // Null-terminate our buffer, just in case
+ buf[x] = 0;
+ // Echo what the server sent to the screen
+ printf("%s", buf);
}
-
}
+ // Free up that BIO object we created.
+ BIO_free_all(bio);
+ // Remember, we also need to free up that SSL_CTX object!
+ SSL_CTX_free(ctx);
+ // Return.
- return wrote;
}
-long StreamPeerSSL::bio_ctrl( BIO *b, int cmd, long num, void *ptr ) {
- if ( cmd == BIO_CTRL_FLUSH ) {
- /* The OpenSSL library needs this */
- return 1;
- }
- return 0;
-}
+void StreamPeerSSL::initialize_ssl() {
-int StreamPeerSSL::bio_gets( BIO *b, char *buf, int len ) {
- return -1;
+ CRYPTO_malloc_init(); // Initialize malloc, free, etc for OpenSSL's use
+ SSL_library_init(); // Initialize OpenSSL's SSL libraries
+ SSL_load_error_strings(); // Load SSL error strings
+ ERR_load_BIO_strings(); // Load BIO error strings
+ OpenSSL_add_all_algorithms(); // Load all available encryption algorithms
}
-int StreamPeerSSL::bio_puts( BIO *b, const char *str ) {
- return StreamPeerSSL::bio_write( b, str, strlen( str ) );
-}
+void StreamPeerSSL::finalize_ssl(){
-BIO_METHOD StreamPeerSSL::bio_methods =
-{
- ( 100 | 0x400 ), /* it's a source/sink BIO */
- "sockbuf glue",
- StreamPeerSSL::bio_write,
- StreamPeerSSL::bio_read,
- StreamPeerSSL::bio_puts,
- StreamPeerSSL::bio_gets,
- StreamPeerSSL::bio_ctrl,
- StreamPeerSSL::bio_create,
- StreamPeerSSL::bio_destroy
-};
-StreamPeerSSL::StreamPeerSSL() {
}
diff --git a/drivers/openssl/stream_peer_ssl.h b/drivers/openssl/stream_peer_ssl.h
index a126f6122c..74866c2da4 100644
--- a/drivers/openssl/stream_peer_ssl.h
+++ b/drivers/openssl/stream_peer_ssl.h
@@ -1,26 +1,43 @@
#ifndef STREAM_PEER_SSL_H
#define STREAM_PEER_SSL_H
+#ifdef OPENSSL_ENABLED
+
#include "io/stream_peer.h"
+#include <openssl/applink.c> // To prevent crashing (see the OpenSSL FAQ)
+#include <openssl/bio.h> // BIO objects for I/O
+#include <openssl/ssl.h> // SSL and SSL_CTX for SSL connections
+#include <openssl/err.h> // Error reporting
+#include <stdio.h> // If you don't know what this is for stop reading now.
class StreamPeerSSL : public StreamPeer {
OBJ_TYPE(StreamPeerSSL,StreamPeer);
+public:
+
+ enum ConnectFlags {
+
+ CONNECT_FLAG_BUG_WORKAROUNDS=1,
+ CONNECT_FLAG_NO_SSLV2=2,
+ CONNECT_FLAG_NO_SSLV3=4,
+ CONNECT_FLAG_NO_TLSV1=8,
+ CONNECT_FLAG_NO_COMPRESSION=16,
+ };
- Ref<StreamPeer> base;
- bool block;
- static BIO_METHOD bio_methods;
+ SSL_CTX* ctx;
+ SSL* ssl;
+ BIO* bio;
- static int bio_create( BIO *b );
- static int bio_destroy( BIO *b );
- static int bio_read( BIO *b, char *buf, int len );
- static int bio_write( BIO *b, const char *buf, int len );
- static long bio_ctrl( BIO *b, int cmd, long num, void *ptr );
- static int bio_gets( BIO *b, char *buf, int len );
- static int bio_puts( BIO *b, const char *str );
public:
+
+
+ Error connect(const String &p_host,int p_port);
+ static void initialize_ssl();
+ static void finalize_ssl();
+
StreamPeerSSL();
};
+#endif
#endif // STREAM_PEER_SSL_H
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