record handshake messages for session hash

ssl/ssl.enums.c

@@ -6,6 +6,7 @@
 #include <openssl/ssl.h>
 #endif
 #include "ssl.enums.h"
+static int decode_extension(ssl,dir,seg,data);
 static int decode_ContentType_ChangeCipherSpec(ssl,dir,seg,data)
   ssl_obj *ssl;
   int dir;
@@ -183,6 +184,7 @@ static int decode_HandshakeType_ClientHello(ssl,dir,seg,data)
     extern decoder extension_decoder[];
 	
     printf("\n");
+    ssl_update_session_hash(ssl,data);
     SSL_DECODE_UINT8(ssl,0,0,data,&vj);
     SSL_DECODE_UINT8(ssl,0,0,data,&vn);    
 
@@ -235,6 +237,7 @@ static int decode_HandshakeType_ClientHello(ssl,dir,seg,data)
       while(data->len) {
     	SSL_DECODE_UINT16(ssl, "extension type", 0, data, &ex);
     	if (ssl_decode_switch(ssl,extension_decoder,ex,dir,seg,data) == R_NOT_FOUND) {
+	  decode_extension(ssl,dir,seg,data);
     	  P_(P_RH){
     	    explain(ssl, "Extension type: %s not yet implemented in ssldump", ex);
     	  }
@@ -253,11 +256,14 @@ static int decode_HandshakeType_ServerHello(ssl,dir,seg,data)
   Data *data;
   {
 
-
     int r;
     Data rnd,session_id;	
-    UINT4 vj,vn;
+    UINT4 vj,vn,exlen,ex;
+
+    extern decoder extension_decoder[];
+
     printf("\n");
+    ssl_update_session_hash(ssl,data);
     SSL_DECODE_UINT8(ssl,0,0,data,&vj);
     SSL_DECODE_UINT8(ssl,0,0,data,&vn);    
 
@@ -284,6 +290,24 @@ static int decode_HandshakeType_ServerHello(ssl,dir,seg,data)
     P_(P_HL) printf("\n");
     SSL_DECODE_ENUM(ssl,"compressionMethod",1,compression_method_decoder,P_HL,data,0);
     P_(P_HL) printf("\n");
+
+    /* TODO: add code to print Extensions */
+    SSL_DECODE_UINT16(ssl,"extensions len",0,data,&exlen);
+    if (exlen) {
+      explain(ssl , "extensions\n");
+      while(data->len) {
+    	SSL_DECODE_UINT16(ssl, "extension type", 0, data, &ex);
+    	if (ssl_decode_switch(ssl,extension_decoder,ex,dir,seg,data) == R_NOT_FOUND) {
+	  decode_extension(ssl,dir,seg,data);
+    	  P_(P_RH){
+    	    explain(ssl, "Extension type: %s not yet implemented in ssldump", ex);
+    	  }
+    	  continue;
+    	}
+    	printf("\n");
+      }
+    }
+
     return(0);
 
   }
@@ -300,6 +324,7 @@ static int decode_HandshakeType_Certificate(ssl,dir,seg,data)
     int r;
   
     printf("\n");
+    ssl_update_session_hash(ssl,data);
     SSL_DECODE_UINT24(ssl,"certificates len",0,data,&len);
 
     while(len){
@@ -323,7 +348,7 @@ static int decode_HandshakeType_ServerKeyExchange(ssl,dir,seg,data)
    int r;
 
     printf("\n");			      
-
+    ssl_update_session_hash(ssl,data);
    if(ssl->cs){
      P_(P_ND){
 	explain(ssl,"params\n");
@@ -361,6 +386,7 @@ static int decode_HandshakeType_CertificateRequest(ssl,dir,seg,data)
     int r;
     
     printf("\n");
+    ssl_update_session_hash(ssl,data);
     SSL_DECODE_UINT8(ssl,"certificate_types len",0,data,&len);
     for(;len;len--){
       SSL_DECODE_ENUM(ssl,"certificate_types",1,
@@ -392,6 +418,7 @@ static int decode_HandshakeType_ServerHelloDone(ssl,dir,seg,data)
 
 
   printf("\n");
+  ssl_update_session_hash(ssl,data);
   return(0);
 
   }
@@ -405,6 +432,7 @@ static int decode_HandshakeType_CertificateVerify(ssl,dir,seg,data)
 
   int r;
   printf("\n");
+  ssl_update_session_hash(ssl,data);
   SSL_DECODE_OPAQUE_ARRAY(ssl,"Signature",-(1<<15-1),P_HL,data,0);
   return(0);
 
@@ -421,6 +449,7 @@ static int decode_HandshakeType_ClientKeyExchange(ssl,dir,seg,data)
    Data pms;
 	
     printf("\n");
+    ssl_update_session_hash(ssl,data);
    if(ssl->cs){
      switch(ssl->cs->kex){
 
@@ -2552,6 +2581,19 @@ static int decode_extension_next_protocol_negotiation(ssl,dir,seg,data)
     data->data+=l;
     return(0);
   }
+static int decode_extension(ssl,dir,seg,data)
+  ssl_obj *ssl;
+  int dir;
+  segment *seg;
+  Data *data;
+  {
+    int l,r;
+    SSL_DECODE_UINT16(ssl,"extension length",0,data,&l);
+    data->len-=l;
+    data->data+=l;
+    return(0);
+  }
+
 
 decoder extension_decoder[] = {
 	{

ssl/ssldecode.c

@@ -91,6 +91,7 @@ struct ssl_decoder_ {
      int ephemeral_rsa;
      Data *PMS;
      Data *MS;
+     Data *handshake_messages;
      ssl_rec_decoder *c_to_s;
      ssl_rec_decoder *s_to_c;     
      ssl_rec_decoder *c_to_s_n;
@@ -214,6 +215,7 @@ int ssl_decoder_destroy(dp)
     r_data_destroy(&d->session_id);
     r_data_destroy(&d->PMS);
     r_data_destroy(&d->MS);
+    r_data_destroy(&d->handshake_messages);
     ssl_destroy_rec_decoder(&d->c_to_s);
     ssl_destroy_rec_decoder(&d->c_to_s_n);
     ssl_destroy_rec_decoder(&d->s_to_c);
@@ -564,6 +566,38 @@ int ssl_process_client_key_exchange(ssl,d,msg,len)
     
   }
 
+
+
+int ssl_update_session_hash(ssl,data)
+  ssl_obj *ssl;
+  Data *data;
+  {
+    Data *hms;
+    UCHAR *d;
+    int l,r,_status;
+
+    hms = ssl->decoder->handshake_messages;
+    d = data->data-4;
+    l = data->len+4;
+
+    if(hms){
+      if(!(hms->data = realloc(hms->data,l+hms->len)))
+	ABORT(R_NO_MEMORY);
+
+      memcpy(hms->data+hms->len,d,l);
+      hms->len+=l;
+    }
+    else{
+      if(r=r_data_create(&hms,d,l))
+  	ABORT(r);
+      ssl->decoder->handshake_messages=hms;
+    }
+
+    _status=0;
+  abort:
+    return(_status);
+  }
+
 #ifdef OPENSSL
 static int tls_P_hash(ssl,secret,seed,md,out)
   ssl_obj *ssl;