path: root/net/third_party/nss/patches/nextproto.patch

diff --git a/mozilla/security/nss/cmd/tstclnt/tstclnt.c b/mozilla/security/nss/cmd/tstclnt/tstclnt.c
index f0b5701..e795b33 100644
--- a/mozilla/security/nss/cmd/tstclnt/tstclnt.c
+++ b/mozilla/security/nss/cmd/tstclnt/tstclnt.c
@@ -863,7 +863,13 @@ int main(int argc, char **argv)
 	SECU_PrintError(progName, "error enabling compression");
 	return 1;
     }
-               
+
+    rv = SSL_SetNextProtoNego(s, "\004flip\004http1.1", 10);
+    if (rv != SECSuccess) {
+	SECU_PrintError(progName, "error enabling next protocol negotiation");
+	return 1;
+    }
+
     SSL_SetPKCS11PinArg(s, &pwdata);
 
     SSL_AuthCertificateHook(s, SSL_AuthCertificate, (void *)handle);
diff --git a/mozilla/security/nss/lib/ssl/ssl.def b/mozilla/security/nss/lib/ssl/ssl.def
index a5b2767..287505f 100644
--- a/mozilla/security/nss/lib/ssl/ssl.def
+++ b/mozilla/security/nss/lib/ssl/ssl.def
@@ -150,3 +150,10 @@ SSL_SNISocketConfigHook;
 ;+    local:
 ;+*;
 ;+};
+;+NSS_CHROMIUM {
+;+    global:
+SSL_GetNextProto;
+SSL_SetNextProtoNego;
+;+    local:
+;+*;
+;+};
diff --git a/mozilla/security/nss/lib/ssl/ssl.h b/mozilla/security/nss/lib/ssl/ssl.h
index d0b5aa7..5b572b2 100644
--- a/mozilla/security/nss/lib/ssl/ssl.h
+++ b/mozilla/security/nss/lib/ssl/ssl.h
@@ -136,6 +136,18 @@ SSL_IMPORT SECStatus SSL_OptionSetDefault(PRInt32 option, PRBool on);
 SSL_IMPORT SECStatus SSL_OptionGetDefault(PRInt32 option, PRBool *on);
 SSL_IMPORT SECStatus SSL_CertDBHandleSet(PRFileDesc *fd, CERTCertDBHandle *dbHandle);
 
+SSL_IMPORT SECStatus SSL_SetNextProtoNego(PRFileDesc *fd,
+					  const unsigned char *data,
+					  unsigned short length);
+SSL_IMPORT SECStatus SSL_GetNextProto(PRFileDesc *fd,
+				      int *state,
+				      unsigned char *buf,
+				      unsigned *length,
+				      unsigned buf_len);
+#define SSL_NEXT_PROTO_NO_SUPPORT	0 /* No peer support                */
+#define SSL_NEXT_PROTO_NEGOTIATED	1 /* Mutual agreement               */
+#define SSL_NEXT_PROTO_NO_OVERLAP	2 /* No protocol overlap found      */
+
 /*
 ** Control ciphers that SSL uses. If on is non-zero then the named cipher
 ** is enabled, otherwise it is disabled. 
diff --git a/mozilla/security/nss/lib/ssl/ssl3con.c b/mozilla/security/nss/lib/ssl/ssl3con.c
index 6b37c4f..545e51e 100644
--- a/mozilla/security/nss/lib/ssl/ssl3con.c
+++ b/mozilla/security/nss/lib/ssl/ssl3con.c
@@ -81,6 +81,7 @@ static SECStatus ssl3_InitState(             sslSocket *ss);
 static SECStatus ssl3_SendCertificate(       sslSocket *ss);
 static SECStatus ssl3_SendEmptyCertificate(  sslSocket *ss);
 static SECStatus ssl3_SendCertificateRequest(sslSocket *ss);
+static SECStatus ssl3_SendNextProto(         sslSocket *ss);
 static SECStatus ssl3_SendFinished(          sslSocket *ss, PRInt32 flags);
 static SECStatus ssl3_SendServerHello(       sslSocket *ss);
 static SECStatus ssl3_SendServerHelloDone(   sslSocket *ss);
@@ -5717,6 +5718,12 @@ ssl3_HandleServerHelloDone(sslSocket *ss)
     if (rv != SECSuccess) {
 	goto loser;	/* err code was set. */
     }
+
+    rv = ssl3_SendNextProto(ss);
+    if (rv != SECSuccess) {
+	goto loser;	/* err code was set. */
+    }
+
     rv = ssl3_SendFinished(ss, 0);
     if (rv != SECSuccess) {
 	goto loser;	/* err code was set. */
@@ -8138,6 +8145,40 @@ ssl3_ComputeTLSFinished(ssl3CipherSpec *spec,
 }
 
 /* called from ssl3_HandleServerHelloDone
+ */
+static SECStatus
+ssl3_SendNextProto(sslSocket *ss)
+{
+    SECStatus rv;
+    int padding_len;
+    static const unsigned char padding[32] = {0};
+
+    if (ss->ssl3.nextProtoState == SSL_NEXT_PROTO_NO_SUPPORT)
+	return SECSuccess;
+
+    PORT_Assert( ss->opt.noLocks || ssl_HaveXmitBufLock(ss));
+    PORT_Assert( ss->opt.noLocks || ssl_HaveSSL3HandshakeLock(ss));
+
+    padding_len = 32 - ((ss->ssl3.nextProto.len + 2) % 32);
+
+    rv = ssl3_AppendHandshakeHeader(ss, next_proto, ss->ssl3.nextProto.len +
+						    2 + padding_len);
+    if (rv != SECSuccess) {
+	return rv;	/* error code set by AppendHandshakeHeader */
+    }
+    rv = ssl3_AppendHandshakeVariable(ss, ss->ssl3.nextProto.data,
+				      ss->ssl3.nextProto.len, 1);
+    if (rv != SECSuccess) {
+	return rv;	/* error code set by AppendHandshake */
+    }
+    rv = ssl3_AppendHandshakeVariable(ss, padding, padding_len, 1);
+    if (rv != SECSuccess) {
+	return rv;	/* error code set by AppendHandshake */
+    }
+    return rv;
+}
+
+/* called from ssl3_HandleServerHelloDone
  *             ssl3_HandleClientHello
  *             ssl3_HandleFinished
  */
@@ -9457,6 +9498,11 @@ ssl3_DestroySSL3Info(sslSocket *ss)
     ssl3_DestroyCipherSpec(&ss->ssl3.specs[1], PR_TRUE/*freeSrvName*/);
 
     ss->ssl3.initialized = PR_FALSE;
+
+    if (ss->ssl3.nextProto.data) {
+	PORT_Free(ss->ssl3.nextProto.data);
+	ss->ssl3.nextProto.data = NULL;
+    }
 }
 
 /* End of ssl3con.c */
diff --git a/mozilla/security/nss/lib/ssl/ssl3ext.c b/mozilla/security/nss/lib/ssl/ssl3ext.c
index fd0d9b9..4269028 100644
--- a/mozilla/security/nss/lib/ssl/ssl3ext.c
+++ b/mozilla/security/nss/lib/ssl/ssl3ext.c
@@ -235,6 +235,7 @@ static const ssl3HelloExtensionHandler clientHelloHandlers[] = {
 #endif
     { ssl_session_ticket_xtn,     &ssl3_ServerHandleSessionTicketXtn },
     { ssl_renegotiation_info_xtn, &ssl3_HandleRenegotiationInfoXtn },
+    { ssl_next_proto_neg_xtn,     &ssl3_ServerHandleNextProtoNegoXtn },
     { -1, NULL }
 };
 
@@ -245,6 +246,7 @@ static const ssl3HelloExtensionHandler serverHelloHandlersTLS[] = {
     /* TODO: add a handler for ssl_ec_point_formats_xtn */
     { ssl_session_ticket_xtn,     &ssl3_ClientHandleSessionTicketXtn },
     { ssl_renegotiation_info_xtn, &ssl3_HandleRenegotiationInfoXtn },
+    { ssl_next_proto_neg_xtn,     &ssl3_ClientHandleNextProtoNegoXtn },
     { -1, NULL }
 };
 
@@ -267,7 +269,8 @@ ssl3HelloExtensionSender clientHelloSendersTLS[SSL_MAX_EXTENSIONS] = {
     { ssl_elliptic_curves_xtn,    &ssl3_SendSupportedCurvesXtn },
     { ssl_ec_point_formats_xtn,   &ssl3_SendSupportedPointFormatsXtn },
 #endif
-    { ssl_session_ticket_xtn,     &ssl3_SendSessionTicketXtn }
+    { ssl_session_ticket_xtn,     &ssl3_SendSessionTicketXtn },
+    { ssl_next_proto_neg_xtn,     &ssl3_ClientSendNextProtoNegoXtn }
     /* any extra entries will appear as { 0, NULL }    */
 };
 
@@ -532,6 +535,123 @@ ssl3_SendSessionTicketXtn(
     return -1;
 }
 
+/* handle an incoming Next Protocol Negotiation extension. */
+SECStatus
+ssl3_ServerHandleNextProtoNegoXtn(sslSocket * ss, PRUint16 ex_type, SECItem *data)
+{
+    if (data->len != 0) {
+	/* Clients MUST send an empty NPN extension, if any. */
+	return SECFailure;
+    }
+
+    ss->ssl3.hs.nextProtoNego = PR_TRUE;
+    return SECSuccess;
+}
+
+/* ssl3_ValidateNextProtoNego checks that the given block of data is valid: none
+ * of the length may be 0 and the sum of the lengths must equal the length of
+ * the block. */
+SECStatus
+ssl3_ValidateNextProtoNego(const unsigned char* data, unsigned short length)
+{
+    unsigned int offset = 0;
+
+    while (offset < length) {
+	if (data[offset] == 0) {
+	    return SECFailure;
+	}
+	offset += (unsigned int)data[offset] + 1;
+    }
+
+    if (offset > length)
+	return SECFailure;
+
+    return SECSuccess;
+}
+
+SECStatus
+ssl3_ClientHandleNextProtoNegoXtn(sslSocket *ss, PRUint16 ex_type,
+                                 SECItem *data)
+{
+    unsigned int i, j;
+    SECStatus rv;
+    unsigned char *result;
+
+    if (data->len == 0) {
+	/* The server supports the extension, but doesn't have any
+	 * protocols configured. In this case we request our favoured
+	 * protocol. */
+	goto pick_first;
+    }
+
+    rv = ssl3_ValidateNextProtoNego(data->data, data->len);
+    if (rv != SECSuccess)
+	return rv;
+
+    /* For each protocol in server preference order, see if we support it. */
+    for (i = 0; i < data->len; ) {
+	for (j = 0; j < ss->opt.nextProtoNego.len; ) {
+	    if (data->data[i] == ss->opt.nextProtoNego.data[j] &&
+		memcmp(&data->data[i+1], &ss->opt.nextProtoNego.data[j+1],
+		       data->data[i]) == 0) {
+		/* We found a match */
+		ss->ssl3.nextProtoState = SSL_NEXT_PROTO_NEGOTIATED;
+		result = &data->data[i];
+		goto found;
+	    }
+	    j += (unsigned int)ss->opt.nextProtoNego.data[j] + 1;
+	}
+
+	i += (unsigned int)data->data[i] + 1;
+    }
+
+  pick_first:
+    ss->ssl3.nextProtoState = SSL_NEXT_PROTO_NO_OVERLAP;
+    result = ss->opt.nextProtoNego.data;
+
+  found:
+    if (ss->ssl3.nextProto.data)
+	PORT_Free(ss->ssl3.nextProto.data);
+    ss->ssl3.nextProto.data = PORT_Alloc(result[0]);
+    PORT_Memcpy(ss->ssl3.nextProto.data, result + 1, result[0]);
+    ss->ssl3.nextProto.len = result[0];
+    return SECSuccess;
+}
+
+PRInt32
+ssl3_ClientSendNextProtoNegoXtn(sslSocket * ss,
+			       PRBool      append,
+			       PRUint32    maxBytes)
+{
+    PRInt32 extension_length;
+
+    /* Renegotiations do not send this extension. */
+    if (ss->opt.nextProtoNego.len == 0 || ss->firstHsDone) {
+	return 0;
+    }
+
+    extension_length = 4;
+
+    if (append && maxBytes >= extension_length) {
+	SECStatus rv;
+	rv = ssl3_AppendHandshakeNumber(ss, ssl_next_proto_neg_xtn, 2);
+	if (rv != SECSuccess)
+	    goto loser;
+	rv = ssl3_AppendHandshakeNumber(ss, 0, 2);
+	if (rv != SECSuccess)
+	    goto loser;
+	TLSExtensionData *xtnData = &ss->xtnData;
+	xtnData->advertised[xtnData->numAdvertised++] = ssl_next_proto_neg_xtn;
+    } else if (maxBytes < extension_length) {
+	return 0;
+    }
+
+    return extension_length;
+
+ loser:
+    return -1;
+}
+
 /*
  * NewSessionTicket
  * Called from ssl3_HandleFinished
diff --git a/mozilla/security/nss/lib/ssl/ssl3prot.h b/mozilla/security/nss/lib/ssl/ssl3prot.h
index 0fc1675..c82c891 100644
--- a/mozilla/security/nss/lib/ssl/ssl3prot.h
+++ b/mozilla/security/nss/lib/ssl/ssl3prot.h
@@ -157,7 +157,8 @@ typedef enum {
     server_hello_done	= 14,
     certificate_verify	= 15, 
     client_key_exchange	= 16, 
-    finished		= 20
+    finished		= 20,
+    next_proto		= 67
 } SSL3HandshakeType;
 
 typedef struct {
diff --git a/mozilla/security/nss/lib/ssl/sslimpl.h b/mozilla/security/nss/lib/ssl/sslimpl.h
index ea36cfb..0ec579d 100644
--- a/mozilla/security/nss/lib/ssl/sslimpl.h
+++ b/mozilla/security/nss/lib/ssl/sslimpl.h
@@ -317,6 +317,11 @@ typedef struct {
 #endif /* NSS_ENABLE_ECC */
 
 typedef struct sslOptionsStr {
+    /* For clients, this is a validated list of protocols in preference order
+     * and wire format. For servers, this is the list of support protocols,
+     * also in wire format. */
+    SECItem      nextProtoNego;
+
     unsigned int useSecurity		: 1;  /*  1 */
     unsigned int useSocks		: 1;  /*  2 */
     unsigned int requestCertificate	: 1;  /*  3 */
@@ -789,6 +794,7 @@ const ssl3CipherSuiteDef *suite_def;
 #ifdef NSS_ENABLE_ECC
     PRUint32              negotiatedECCurves; /* bit mask */
 #endif /* NSS_ENABLE_ECC */
+    PRBool                nextProtoNego;/* Our peer has sent this extension */
 } SSL3HandshakeState;
 
 
@@ -830,6 +836,16 @@ struct ssl3StateStr {
     PRBool               initialized;
     SSL3HandshakeState   hs;
     ssl3CipherSpec       specs[2];	/* one is current, one is pending. */
+
+    /* In a client: if the server supports Next Protocol Negotiation, then
+     * this is the protocol that was requested.
+     * In a server: this is the protocol that the client requested via Next
+     * Protocol Negotiation.
+     *
+     * In either case, if the data pointer is non-NULL, then it is malloced
+     * data.  */
+    SECItem		nextProto;
+    int			nextProtoState;	/* See SSL_NEXT_PROTO_* defines */
 };
 
 typedef struct {
@@ -1495,8 +1511,12 @@ extern SECStatus ssl3_HandleSupportedPointFormatsXtn(sslSocket * ss,
 			PRUint16 ex_type, SECItem *data);
 extern SECStatus ssl3_ClientHandleSessionTicketXtn(sslSocket *ss,
 			PRUint16 ex_type, SECItem *data);
+extern SECStatus ssl3_ClientHandleNextProtoNegoXtn(sslSocket *ss,
+			PRUint16 ex_type, SECItem *data);
 extern SECStatus ssl3_ServerHandleSessionTicketXtn(sslSocket *ss,
 			PRUint16 ex_type, SECItem *data);
+extern SECStatus ssl3_ServerHandleNextProtoNegoXtn(sslSocket *ss,
+			PRUint16 ex_type, SECItem *data);
 
 /* ClientHello and ServerHello extension senders.
  * Note that not all extension senders are exposed here; only those that
@@ -1527,6 +1547,10 @@ extern PRInt32 ssl3_SendSupportedCurvesXtn(sslSocket *ss,
 extern PRInt32 ssl3_SendSupportedPointFormatsXtn(sslSocket *ss,
 			PRBool append, PRUint32 maxBytes);
 #endif
+extern PRInt32 ssl3_ClientSendNextProtoNegoXtn(sslSocket *ss, PRBool append,
+					       PRUint32 maxBytes);
+extern SECStatus ssl3_ValidateNextProtoNego(const unsigned char* data,
+					    unsigned short length);
 
 /* call the registered extension handlers. */
 extern SECStatus ssl3_HandleHelloExtensions(sslSocket *ss, 
diff --git a/mozilla/security/nss/lib/ssl/sslsock.c b/mozilla/security/nss/lib/ssl/sslsock.c
index aab48d6..2ff2992 100644
--- a/mozilla/security/nss/lib/ssl/sslsock.c
+++ b/mozilla/security/nss/lib/ssl/sslsock.c
@@ -163,6 +163,7 @@ static const sslSocketOps ssl_secure_ops = {	/* SSL. */
 ** default settings for socket enables
 */
 static sslOptions ssl_defaults = {
+    { siBuffer, NULL, 0 },	/* nextProtoNego */
     PR_TRUE, 	/* useSecurity        */
     PR_FALSE,	/* useSocks           */
     PR_FALSE,	/* requestCertificate */
@@ -437,6 +438,10 @@ ssl_DestroySocketContents(sslSocket *ss)
 	ssl3_FreeKeyPair(ss->ephemeralECDHKeyPair);
 	ss->ephemeralECDHKeyPair = NULL;
     }
+    if (ss->opt.nextProtoNego.data) {
+	PORT_Free(ss->opt.nextProtoNego.data);
+	ss->opt.nextProtoNego.data = NULL;
+    }
     PORT_Assert(!ss->xtnData.sniNameArr);
     if (ss->xtnData.sniNameArr) {
         PORT_Free(ss->xtnData.sniNameArr);
@@ -1255,6 +1260,75 @@ SSL_ImportFD(PRFileDesc *model, PRFileDesc *fd)
     return fd;
 }
 
+/* SSL_SetNextProtoNego sets the list of supported protocols for the given
+ * socket. The list is a series of 8-bit, length prefixed strings. */
+SECStatus
+SSL_SetNextProtoNego(PRFileDesc *fd, const unsigned char *data,
+		     unsigned short length)
+{
+    sslSocket *ss = ssl_FindSocket(fd);
+
+    if (!ss) {
+	SSL_DBG(("%d: SSL[%d]: bad socket in SSL_SetNextProtoNego", SSL_GETPID(),
+		fd));
+	return SECFailure;
+    }
+
+    if (ssl3_ValidateNextProtoNego(data, length) != SECSuccess)
+	return SECFailure;
+
+    ssl_GetSSL3HandshakeLock(ss);
+    if (ss->opt.nextProtoNego.data)
+	PORT_Free(ss->opt.nextProtoNego.data);
+    ss->opt.nextProtoNego.data = PORT_Alloc(length);
+    if (!ss->opt.nextProtoNego.data) {
+	ssl_ReleaseSSL3HandshakeLock(ss);
+	return SECFailure;
+    }
+    memcpy(ss->opt.nextProtoNego.data, data, length);
+    ss->opt.nextProtoNego.len = length;
+    ss->opt.nextProtoNego.type = siBuffer;
+    ssl_ReleaseSSL3HandshakeLock(ss);
+
+    return SECSuccess;
+}
+
+/* SSL_GetNextProto reads the resulting Next Protocol Negotiation result for
+ * the given socket. It's only valid to call this once the handshake has
+ * completed.
+ *
+ * state is set to one of the SSL_NEXT_PROTO_* constants. The negotiated
+ * protocol, if any, is written into buf, which must be at least buf_len
+ * bytes long. If the negotiated protocol is longer than this, it is truncated.
+ * The number of bytes copied is written into length.
+ */
+SECStatus
+SSL_GetNextProto(PRFileDesc *fd, int *state, unsigned char *buf,
+		 unsigned int *length, unsigned int buf_len)
+{
+    sslSocket *ss = ssl_FindSocket(fd);
+
+    if (!ss) {
+	SSL_DBG(("%d: SSL[%d]: bad socket in SSL_GetNextProto", SSL_GETPID(),
+		fd));
+	return SECFailure;
+    }
+
+    *state = ss->ssl3.nextProtoState;
+
+    if (ss->ssl3.nextProtoState != SSL_NEXT_PROTO_NO_SUPPORT &&
+	ss->ssl3.nextProto.data) {
+	*length = ss->ssl3.nextProto.len;
+	if (*length > buf_len)
+	    *length = buf_len;
+	PORT_Memcpy(buf, ss->ssl3.nextProto.data, *length);
+    } else {
+	*length = 0;
+    }
+
+    return SECSuccess;
+}
+
 PRFileDesc *
 SSL_ReconfigFD(PRFileDesc *model, PRFileDesc *fd)
 {
diff --git a/mozilla/security/nss/lib/ssl/sslt.h b/mozilla/security/nss/lib/ssl/sslt.h
index c7d4553..f6e0b62 100644
--- a/mozilla/security/nss/lib/ssl/sslt.h
+++ b/mozilla/security/nss/lib/ssl/sslt.h
@@ -203,9 +203,10 @@ typedef enum {
     ssl_ec_point_formats_xtn         = 11,
 #endif
     ssl_session_ticket_xtn           = 35,
+    ssl_next_proto_neg_xtn           = 13172,
     ssl_renegotiation_info_xtn       = 0xff01	/* experimental number */
 } SSLExtensionType;
 
-#define SSL_MAX_EXTENSIONS             5
+#define SSL_MAX_EXTENSIONS             6
 
 #endif /* __sslt_h_ */