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gecko/security/nss/lib/ssl/ssl.h
Benjamin Smedberg e0d84f35cb Import NSS_3_12_RC4
2008-06-06 08:40:11 -04:00

513 lines
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/*
* This file contains prototypes for the public SSL functions.
*
* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is the Netscape security libraries.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1994-2000
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
/* $Id: ssl.h,v 1.28 2008/03/06 20:16:22 wtc%google.com Exp $ */
#ifndef __ssl_h_
#define __ssl_h_
#include "prtypes.h"
#include "prerror.h"
#include "prio.h"
#include "seccomon.h"
#include "cert.h"
#include "keyt.h"
#include "sslt.h" /* public ssl data types */
#if defined(_WIN32) && !defined(IN_LIBSSL) && !defined(NSS_USE_STATIC_LIBS)
#define SSL_IMPORT extern __declspec(dllimport)
#else
#define SSL_IMPORT extern
#endif
SEC_BEGIN_PROTOS
/* constant table enumerating all implemented SSL 2 and 3 cipher suites. */
SSL_IMPORT const PRUint16 SSL_ImplementedCiphers[];
/* number of entries in the above table. */
SSL_IMPORT const PRUint16 SSL_NumImplementedCiphers;
/* Macro to tell which ciphers in table are SSL2 vs SSL3/TLS. */
#define SSL_IS_SSL2_CIPHER(which) (((which) & 0xfff0) == 0xff00)
/*
** Imports fd into SSL, returning a new socket. Copies SSL configuration
** from model.
*/
SSL_IMPORT PRFileDesc *SSL_ImportFD(PRFileDesc *model, PRFileDesc *fd);
/*
** Enable/disable an ssl mode
**
** SSL_SECURITY:
** enable/disable use of SSL security protocol before connect
**
** SSL_SOCKS:
** enable/disable use of socks before connect
** (No longer supported).
**
** SSL_REQUEST_CERTIFICATE:
** require a certificate during secure connect
*/
/* options */
#define SSL_SECURITY 1 /* (on by default) */
#define SSL_SOCKS 2 /* (off by default) */
#define SSL_REQUEST_CERTIFICATE 3 /* (off by default) */
#define SSL_HANDSHAKE_AS_CLIENT 5 /* force accept to hs as client */
/* (off by default) */
#define SSL_HANDSHAKE_AS_SERVER 6 /* force connect to hs as server */
/* (off by default) */
#define SSL_ENABLE_SSL2 7 /* enable ssl v2 (on by default) */
#define SSL_ENABLE_SSL3 8 /* enable ssl v3 (on by default) */
#define SSL_NO_CACHE 9 /* don't use the session cache */
/* (off by default) */
#define SSL_REQUIRE_CERTIFICATE 10 /* (SSL_REQUIRE_FIRST_HANDSHAKE */
/* by default) */
#define SSL_ENABLE_FDX 11 /* permit simultaneous read/write */
/* (off by default) */
#define SSL_V2_COMPATIBLE_HELLO 12 /* send v3 client hello in v2 fmt */
/* (on by default) */
#define SSL_ENABLE_TLS 13 /* enable TLS (on by default) */
#define SSL_ROLLBACK_DETECTION 14 /* for compatibility, default: on */
#define SSL_NO_STEP_DOWN 15 /* Disable export cipher suites */
/* if step-down keys are needed. */
/* default: off, generate */
/* step-down keys if needed. */
#define SSL_BYPASS_PKCS11 16 /* use PKCS#11 for pub key only */
#define SSL_NO_LOCKS 17 /* Don't use locks for protection */
#define SSL_ENABLE_SESSION_TICKETS 18 /* Enable TLS SessionTicket */
/* extension (off by default) */
#ifdef SSL_DEPRECATED_FUNCTION
/* Old deprecated function names */
SSL_IMPORT SECStatus SSL_Enable(PRFileDesc *fd, int option, PRBool on);
SSL_IMPORT SECStatus SSL_EnableDefault(int option, PRBool on);
#endif
/* New function names */
SSL_IMPORT SECStatus SSL_OptionSet(PRFileDesc *fd, PRInt32 option, PRBool on);
SSL_IMPORT SECStatus SSL_OptionGet(PRFileDesc *fd, PRInt32 option, PRBool *on);
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);
/*
** Control ciphers that SSL uses. If on is non-zero then the named cipher
** is enabled, otherwise it is disabled.
** The "cipher" values are defined in sslproto.h (the SSL_EN_* values).
** EnableCipher records user preferences.
** SetPolicy sets the policy according to the policy module.
*/
#ifdef SSL_DEPRECATED_FUNCTION
/* Old deprecated function names */
SSL_IMPORT SECStatus SSL_EnableCipher(long which, PRBool enabled);
SSL_IMPORT SECStatus SSL_SetPolicy(long which, int policy);
#endif
/* New function names */
SSL_IMPORT SECStatus SSL_CipherPrefSet(PRFileDesc *fd, PRInt32 cipher, PRBool enabled);
SSL_IMPORT SECStatus SSL_CipherPrefGet(PRFileDesc *fd, PRInt32 cipher, PRBool *enabled);
SSL_IMPORT SECStatus SSL_CipherPrefSetDefault(PRInt32 cipher, PRBool enabled);
SSL_IMPORT SECStatus SSL_CipherPrefGetDefault(PRInt32 cipher, PRBool *enabled);
SSL_IMPORT SECStatus SSL_CipherPolicySet(PRInt32 cipher, PRInt32 policy);
SSL_IMPORT SECStatus SSL_CipherPolicyGet(PRInt32 cipher, PRInt32 *policy);
/* Values for "policy" argument to SSL_PolicySet */
/* Values returned by SSL_CipherPolicyGet. */
#define SSL_NOT_ALLOWED 0 /* or invalid or unimplemented */
#define SSL_ALLOWED 1
#define SSL_RESTRICTED 2 /* only with "Step-Up" certs. */
/* Values for "on" with SSL_REQUIRE_CERTIFICATE. */
#define SSL_REQUIRE_NEVER ((PRBool)0)
#define SSL_REQUIRE_ALWAYS ((PRBool)1)
#define SSL_REQUIRE_FIRST_HANDSHAKE ((PRBool)2)
#define SSL_REQUIRE_NO_ERROR ((PRBool)3)
/*
** Reset the handshake state for fd. This will make the complete SSL
** handshake protocol execute from the ground up on the next i/o
** operation.
*/
SSL_IMPORT SECStatus SSL_ResetHandshake(PRFileDesc *fd, PRBool asServer);
/*
** Force the handshake for fd to complete immediately. This blocks until
** the complete SSL handshake protocol is finished.
*/
SSL_IMPORT SECStatus SSL_ForceHandshake(PRFileDesc *fd);
/*
** Same as above, but with an I/O timeout.
*/
SSL_IMPORT SECStatus SSL_ForceHandshakeWithTimeout(PRFileDesc *fd,
PRIntervalTime timeout);
/*
** Query security status of socket. *on is set to one if security is
** enabled. *keySize will contain the stream key size used. *issuer will
** contain the RFC1485 verison of the name of the issuer of the
** certificate at the other end of the connection. For a client, this is
** the issuer of the server's certificate; for a server, this is the
** issuer of the client's certificate (if any). Subject is the subject of
** the other end's certificate. The pointers can be zero if the desired
** data is not needed. All strings returned by this function are owned
** by the caller, and need to be freed with PORT_Free.
*/
SSL_IMPORT SECStatus SSL_SecurityStatus(PRFileDesc *fd, int *on, char **cipher,
int *keySize, int *secretKeySize,
char **issuer, char **subject);
/* Values for "on" */
#define SSL_SECURITY_STATUS_NOOPT -1
#define SSL_SECURITY_STATUS_OFF 0
#define SSL_SECURITY_STATUS_ON_HIGH 1
#define SSL_SECURITY_STATUS_ON_LOW 2
#define SSL_SECURITY_STATUS_FORTEZZA 3 /* NO LONGER SUPPORTED */
/*
** Return the certificate for our SSL peer. If the client calls this
** it will always return the server's certificate. If the server calls
** this, it may return NULL if client authentication is not enabled or
** if the client had no certificate when asked.
** "fd" the socket "file" descriptor
*/
SSL_IMPORT CERTCertificate *SSL_PeerCertificate(PRFileDesc *fd);
/*
** Authenticate certificate hook. Called when a certificate comes in
** (because of SSL_REQUIRE_CERTIFICATE in SSL_Enable) to authenticate the
** certificate.
*/
typedef SECStatus (PR_CALLBACK *SSLAuthCertificate)(void *arg, PRFileDesc *fd,
PRBool checkSig,
PRBool isServer);
SSL_IMPORT SECStatus SSL_AuthCertificateHook(PRFileDesc *fd,
SSLAuthCertificate f,
void *arg);
/* An implementation of the certificate authentication hook */
SSL_IMPORT SECStatus SSL_AuthCertificate(void *arg, PRFileDesc *fd,
PRBool checkSig, PRBool isServer);
/*
* Prototype for SSL callback to get client auth data from the application.
* arg - application passed argument
* caNames - pointer to distinguished names of CAs that the server likes
* pRetCert - pointer to pointer to cert, for return of cert
* pRetKey - pointer to key pointer, for return of key
*/
typedef SECStatus (PR_CALLBACK *SSLGetClientAuthData)(void *arg,
PRFileDesc *fd,
CERTDistNames *caNames,
CERTCertificate **pRetCert,/*return */
SECKEYPrivateKey **pRetKey);/* return */
/*
* Set the client side callback for SSL to retrieve user's private key
* and certificate.
* fd - the file descriptor for the connection in question
* f - the application's callback that delivers the key and cert
* a - application specific data
*/
SSL_IMPORT SECStatus SSL_GetClientAuthDataHook(PRFileDesc *fd,
SSLGetClientAuthData f, void *a);
/*
* Set the client side argument for SSL to retrieve PKCS #11 pin.
* fd - the file descriptor for the connection in question
* a - pkcs11 application specific data
*/
SSL_IMPORT SECStatus SSL_SetPKCS11PinArg(PRFileDesc *fd, void *a);
/*
** This is a callback for dealing with server certs that are not authenticated
** by the client. The client app can decide that it actually likes the
** cert by some external means and restart the connection.
*/
typedef SECStatus (PR_CALLBACK *SSLBadCertHandler)(void *arg, PRFileDesc *fd);
SSL_IMPORT SECStatus SSL_BadCertHook(PRFileDesc *fd, SSLBadCertHandler f,
void *arg);
/*
** Configure ssl for running a secure server. Needs the
** certificate for the server and the servers private key. The arguments
** are copied.
*/
SSL_IMPORT SECStatus SSL_ConfigSecureServer(
PRFileDesc *fd, CERTCertificate *cert,
SECKEYPrivateKey *key, SSLKEAType kea);
/*
** Configure a secure servers session-id cache. Define the maximum number
** of entries in the cache, the longevity of the entires, and the directory
** where the cache files will be placed. These values can be zero, and
** if so, the implementation will choose defaults.
** This version of the function is for use in applications that have only one
** process that uses the cache (even if that process has multiple threads).
*/
SSL_IMPORT SECStatus SSL_ConfigServerSessionIDCache(int maxCacheEntries,
PRUint32 timeout,
PRUint32 ssl3_timeout,
const char * directory);
/*
** Like SSL_ConfigServerSessionIDCache, with one important difference.
** If the application will run multiple processes (as opposed to, or in
** addition to multiple threads), then it must call this function, instead
** of calling SSL_ConfigServerSessionIDCache().
** This has nothing to do with the number of processORs, only processEs.
** This function sets up a Server Session ID (SID) cache that is safe for
** access by multiple processes on the same system.
*/
SSL_IMPORT SECStatus SSL_ConfigMPServerSIDCache(int maxCacheEntries,
PRUint32 timeout,
PRUint32 ssl3_timeout,
const char * directory);
/* Get and set the configured maximum number of mutexes used for the
** server's store of SSL sessions. This value is used by the server
** session ID cache initialization functions shown above. Note that on
** some platforms, these mutexes are actually implemented with POSIX
** semaphores, or with unnamed pipes. The default value varies by platform.
** An attempt to set a too-low maximum will return an error and the
** configured value will not be changed.
*/
SSL_IMPORT PRUint32 SSL_GetMaxServerCacheLocks(void);
SSL_IMPORT SECStatus SSL_SetMaxServerCacheLocks(PRUint32 maxLocks);
/* environment variable set by SSL_ConfigMPServerSIDCache, and queried by
* SSL_InheritMPServerSIDCache when envString is NULL.
*/
#define SSL_ENV_VAR_NAME "SSL_INHERITANCE"
/* called in child to inherit SID Cache variables.
* If envString is NULL, this function will use the value of the environment
* variable "SSL_INHERITANCE", otherwise the string value passed in will be
* used.
*/
SSL_IMPORT SECStatus SSL_InheritMPServerSIDCache(const char * envString);
/*
** Set the callback on a particular socket that gets called when we finish
** performing a handshake.
*/
typedef void (PR_CALLBACK *SSLHandshakeCallback)(PRFileDesc *fd,
void *client_data);
SSL_IMPORT SECStatus SSL_HandshakeCallback(PRFileDesc *fd,
SSLHandshakeCallback cb, void *client_data);
/*
** For the server, request a new handshake. For the client, begin a new
** handshake. If flushCache is non-zero, the SSL3 cache entry will be
** flushed first, ensuring that a full SSL handshake will be done.
** If flushCache is zero, and an SSL connection is established, it will
** do the much faster session restart handshake. This will change the
** session keys without doing another private key operation.
*/
SSL_IMPORT SECStatus SSL_ReHandshake(PRFileDesc *fd, PRBool flushCache);
/*
** Same as above, but with an I/O timeout.
*/
SSL_IMPORT SECStatus SSL_ReHandshakeWithTimeout(PRFileDesc *fd,
PRBool flushCache,
PRIntervalTime timeout);
#ifdef SSL_DEPRECATED_FUNCTION
/* deprecated!
** For the server, request a new handshake. For the client, begin a new
** handshake. Flushes SSL3 session cache entry first, ensuring that a
** full handshake will be done.
** This call is equivalent to SSL_ReHandshake(fd, PR_TRUE)
*/
SSL_IMPORT SECStatus SSL_RedoHandshake(PRFileDesc *fd);
#endif
/*
* Allow the application to pass a URL or hostname into the SSL library
*/
SSL_IMPORT SECStatus SSL_SetURL(PRFileDesc *fd, const char *url);
/*
** Return the number of bytes that SSL has waiting in internal buffers.
** Return 0 if security is not enabled.
*/
SSL_IMPORT int SSL_DataPending(PRFileDesc *fd);
/*
** Invalidate the SSL session associated with fd.
*/
SSL_IMPORT SECStatus SSL_InvalidateSession(PRFileDesc *fd);
/*
** Return a SECItem containing the SSL session ID associated with the fd.
*/
SSL_IMPORT SECItem *SSL_GetSessionID(PRFileDesc *fd);
/*
** Clear out the client's SSL session cache, not the server's session cache.
*/
SSL_IMPORT void SSL_ClearSessionCache(void);
/*
** Close the server's SSL session cache.
*/
SSL_IMPORT SECStatus SSL_ShutdownServerSessionIDCache(void);
/*
** Set peer information so we can correctly look up SSL session later.
** You only have to do this if you're tunneling through a proxy.
*/
SSL_IMPORT SECStatus SSL_SetSockPeerID(PRFileDesc *fd, char *peerID);
/*
** Reveal the security information for the peer.
*/
SSL_IMPORT CERTCertificate * SSL_RevealCert(PRFileDesc * socket);
SSL_IMPORT void * SSL_RevealPinArg(PRFileDesc * socket);
SSL_IMPORT char * SSL_RevealURL(PRFileDesc * socket);
/* This callback may be passed to the SSL library via a call to
* SSL_GetClientAuthDataHook() for each SSL client socket.
* It will be invoked when SSL needs to know what certificate and private key
* (if any) to use to respond to a request for client authentication.
* If arg is non-NULL, it is a pointer to a NULL-terminated string containing
* the nickname of the cert/key pair to use.
* If arg is NULL, this function will search the cert and key databases for
* a suitable match and send it if one is found.
*/
SSL_IMPORT SECStatus
NSS_GetClientAuthData(void * arg,
PRFileDesc * socket,
struct CERTDistNamesStr * caNames,
struct CERTCertificateStr ** pRetCert,
struct SECKEYPrivateKeyStr **pRetKey);
/*
* Look to see if any of the signers in the cert chain for "cert" are found
* in the list of caNames.
* Returns SECSuccess if so, SECFailure if not.
* Used by NSS_GetClientAuthData. May be used by other callback functions.
*/
SSL_IMPORT SECStatus NSS_CmpCertChainWCANames(CERTCertificate *cert,
CERTDistNames *caNames);
/*
* Returns key exchange type of the keys in an SSL server certificate.
*/
SSL_IMPORT SSLKEAType NSS_FindCertKEAType(CERTCertificate * cert);
/* Set cipher policies to a predefined Domestic (U.S.A.) policy.
* This essentially enables all supported ciphers.
*/
SSL_IMPORT SECStatus NSS_SetDomesticPolicy(void);
/* Set cipher policies to a predefined Policy that is exportable from the USA
* according to present U.S. policies as we understand them.
* See documentation for the list.
* Note that your particular application program may be able to obtain
* an export license with more or fewer capabilities than those allowed
* by this function. In that case, you should use SSL_SetPolicy()
* to explicitly allow those ciphers you may legally export.
*/
SSL_IMPORT SECStatus NSS_SetExportPolicy(void);
/* Set cipher policies to a predefined Policy that is exportable from the USA
* according to present U.S. policies as we understand them, and that the
* nation of France will permit to be imported into their country.
* See documentation for the list.
*/
SSL_IMPORT SECStatus NSS_SetFrancePolicy(void);
SSL_IMPORT SSL3Statistics * SSL_GetStatistics(void);
/* Report more information than SSL_SecurityStatus.
** Caller supplies the info struct. Function fills it in.
*/
SSL_IMPORT SECStatus SSL_GetChannelInfo(PRFileDesc *fd, SSLChannelInfo *info,
PRUintn len);
SSL_IMPORT SECStatus SSL_GetCipherSuiteInfo(PRUint16 cipherSuite,
SSLCipherSuiteInfo *info, PRUintn len);
/*
** Return a new reference to the certificate that was most recently sent
** to the peer on this SSL/TLS connection, or NULL if none has been sent.
*/
SSL_IMPORT CERTCertificate * SSL_LocalCertificate(PRFileDesc *fd);
/* Test an SSL configuration to see if SSL_BYPASS_PKCS11 can be turned on.
** Check the key exchange algorithm for each cipher in the list to see if
** a master secret key can be extracted after being derived with the mechanism
** required by the protocolmask argument. If the KEA will use keys from the
** specified cert make sure the extract operation is attempted from the slot
** where the private key resides.
** If MS can be extracted for all ciphers, (*pcanbypass) is set to TRUE and
** SECSuccess is returned. In all other cases but one (*pcanbypass) is
** set to FALSE and SECFailure is returned.
** In that last case Derive() has been called successfully but the MS is null,
** CanBypass sets (*pcanbypass) to FALSE and returns SECSuccess indicating the
** arguments were all valid but the slot cannot be bypassed.
**
** Note: A TRUE return code from CanBypass means "Your configuration will perform
** NO WORSE with the bypass enabled than without"; it does NOT mean that every
** cipher suite listed will work properly with the selected protocols.
**
** Caveat: If export cipher suites are included in the argument list Canbypass
** will return FALSE.
**/
/* protocol mask bits */
#define SSL_CBP_SSL3 0x0001 /* test SSL v3 mechanisms */
#define SSL_CBP_TLS1_0 0x0002 /* test TLS v1.0 mechanisms */
SSL_IMPORT SECStatus SSL_CanBypass(CERTCertificate *cert,
SECKEYPrivateKey *privKey,
PRUint32 protocolmask,
PRUint16 *ciphers, int nciphers,
PRBool *pcanbypass, void *pwArg);
SEC_END_PROTOS
#endif /* __ssl_h_ */
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