Add m-esr52 at 52.6.0

1 files changed, 156 insertions, 0 deletions

diff --git a/security/nss/lib/ssl/ssl3ext.h b/security/nss/lib/ssl/ssl3ext.h
new file mode 100644
index 0000000000..f93ad65bdf
--- /dev/null
+++ b/security/nss/lib/ssl/ssl3ext.h
@@ -0,0 +1,156 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is PRIVATE to SSL.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef __ssl3ext_h_
+#define __ssl3ext_h_
+
+typedef enum {
+    sni_nametype_hostname
+} SNINameType;
+typedef struct TLSExtensionDataStr TLSExtensionData;
+
+/* registerable callback function that either appends extension to buffer
+ * or returns length of data that it would have appended.
+ */
+typedef PRInt32 (*ssl3HelloExtensionSenderFunc)(const sslSocket *ss,
+                                                TLSExtensionData *xtnData,
+                                                PRBool append,
+                                                PRUint32 maxBytes);
+
+/* registerable callback function that handles a received extension,
+ * of the given type.
+ */
+typedef SECStatus (*ssl3ExtensionHandlerFunc)(const sslSocket *ss,
+                                              TLSExtensionData *xtnData,
+                                              PRUint16 ex_type,
+                                              SECItem *data);
+
+/* row in a table of hello extension senders */
+typedef struct {
+    PRInt32 ex_type;
+    ssl3HelloExtensionSenderFunc ex_sender;
+} ssl3HelloExtensionSender;
+
+/* row in a table of hello extension handlers */
+typedef struct {
+    PRInt32 ex_type;
+    ssl3ExtensionHandlerFunc ex_handler;
+} ssl3ExtensionHandler;
+
+struct TLSExtensionDataStr {
+    /* registered callbacks that send server hello extensions */
+    ssl3HelloExtensionSender serverHelloSenders[SSL_MAX_EXTENSIONS];
+    ssl3HelloExtensionSender encryptedExtensionsSenders[SSL_MAX_EXTENSIONS];
+    ssl3HelloExtensionSender certificateSenders[SSL_MAX_EXTENSIONS];
+
+    /* Keep track of the extensions that are negotiated. */
+    PRUint16 numAdvertised;
+    PRUint16 numNegotiated;
+    PRUint16 advertised[SSL_MAX_EXTENSIONS];
+    PRUint16 negotiated[SSL_MAX_EXTENSIONS];
+
+    /* SessionTicket Extension related data. */
+    PRBool ticketTimestampVerified;
+    PRBool emptySessionTicket;
+    PRBool sentSessionTicketInClientHello;
+    SECItem psk_ke_modes;
+    PRUint32 max_early_data_size;
+
+    /* SNI Extension related data
+     * Names data is not coppied from the input buffer. It can not be
+     * used outside the scope where input buffer is defined and that
+     * is beyond ssl3_HandleClientHello function. */
+    SECItem *sniNameArr;
+    PRUint32 sniNameArrSize;
+
+    /* Signed Certificate Timestamps extracted from the TLS extension.
+     * (client only).
+     * This container holds a temporary pointer to the extension data,
+     * until a session structure (the sec.ci.sid of an sslSocket) is setup
+     * that can hold a permanent copy of the data
+     * (in sec.ci.sid.u.ssl3.signedCertTimestamps).
+     * The data pointed to by this structure is neither explicitly allocated
+     * nor copied: the pointer points to the handshake message buffer and is
+     * only valid in the scope of ssl3_HandleServerHello.
+     */
+    SECItem signedCertTimestamps;
+
+    PRBool peerSupportsFfdheGroups; /* if the peer supports named ffdhe groups */
+
+    /* clientSigAndHash contains the contents of the signature_algorithms
+     * extension (if any) from the client. This is only valid for TLS 1.2
+     * or later. */
+    SSLSignatureScheme *clientSigSchemes;
+    unsigned int numClientSigScheme;
+
+    /* In a client: if the server supports Next Protocol Negotiation, then
+     * this is the protocol that was negotiated.
+     */
+    SECItem nextProto;
+    SSLNextProtoState nextProtoState;
+
+    PRUint16 dtlsSRTPCipherSuite; /* 0 if not selected */
+
+    SECItem pskBinder;                /* The PSK binder for the first PSK (TLS 1.3) */
+    unsigned long pskBinderPrefixLen; /* The length of the binder input. */
+    PRCList remoteKeyShares;          /* The other side's public keys (TLS 1.3) */
+};
+
+typedef struct TLSExtensionStr {
+    PRCList link;  /* The linked list link */
+    PRUint16 type; /* Extension type */
+    SECItem data;  /* Pointers into the handshake data. */
+} TLSExtension;
+
+SECStatus ssl3_HandleExtensions(sslSocket *ss,
+                                SSL3Opaque **b, PRUint32 *length,
+                                SSL3HandshakeType handshakeMessage);
+SECStatus ssl3_ParseExtensions(sslSocket *ss,
+                               SSL3Opaque **b, PRUint32 *length);
+SECStatus ssl3_HandleParsedExtensions(sslSocket *ss,
+                                      SSL3HandshakeType handshakeMessage);
+TLSExtension *ssl3_FindExtension(sslSocket *ss,
+                                 SSLExtensionType extension_type);
+void ssl3_DestroyRemoteExtensions(PRCList *list);
+void ssl3_InitExtensionData(TLSExtensionData *xtnData);
+void ssl3_ResetExtensionData(TLSExtensionData *xtnData);
+
+PRBool ssl3_ExtensionNegotiated(const sslSocket *ss, PRUint16 ex_type);
+PRBool ssl3_ClientExtensionAdvertised(const sslSocket *ss, PRUint16 ex_type);
+
+SECStatus ssl3_RegisterExtensionSender(const sslSocket *ss,
+                                       TLSExtensionData *xtnData,
+                                       PRUint16 ex_type,
+                                       ssl3HelloExtensionSenderFunc cb);
+PRInt32 ssl3_CallHelloExtensionSenders(sslSocket *ss, PRBool append, PRUint32 maxBytes,
+                                       const ssl3HelloExtensionSender *sender);
+
+unsigned int ssl3_CalculatePaddingExtensionLength(unsigned int clientHelloLength);
+PRInt32 ssl3_AppendPaddingExtension(sslSocket *ss, unsigned int extensionLen,
+                                    PRUint32 maxBytes);
+
+/* Thunks to let us operate on const sslSocket* objects. */
+SECStatus ssl3_ExtAppendHandshake(const sslSocket *ss, const void *void_src,
+                                  PRInt32 bytes);
+SECStatus ssl3_ExtAppendHandshakeNumber(const sslSocket *ss, PRInt32 num,
+                                        PRInt32 lenSize);
+SECStatus ssl3_ExtAppendHandshakeVariable(const sslSocket *ss,
+                                          const SSL3Opaque *src, PRInt32 bytes,
+                                          PRInt32 lenSize);
+void ssl3_ExtSendAlert(const sslSocket *ss, SSL3AlertLevel level,
+                       SSL3AlertDescription desc);
+void ssl3_ExtDecodeError(const sslSocket *ss);
+SECStatus ssl3_ExtConsumeHandshake(const sslSocket *ss, void *v, PRInt32 bytes,
+                                   SSL3Opaque **b, PRUint32 *length);
+PRInt32 ssl3_ExtConsumeHandshakeNumber(const sslSocket *ss, PRInt32 bytes,
+                                       SSL3Opaque **b, PRUint32 *length);
+SECStatus ssl3_ExtConsumeHandshakeVariable(const sslSocket *ss, SECItem *i,
+                                           PRInt32 bytes, SSL3Opaque **b,
+                                           PRUint32 *length);
+
+#endif