gecko-dev/security/nss/lib/ssl/ssl.h
wtc%netscape.com 6f7422a77a Bugzilla bug #65416: assign values explicitly to enumeration constants.
The same values that the compiler would assign are assigned, with only
one exception (cmmfNoPKIStatus in cmmft.h).  This is patch id=22555,
reviewed by Nelson Bolyard.
2001-01-18 16:36:43 +00:00

433 lines
16 KiB
C

/*
* This file contains prototypes for the public SSL functions.
*
* 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 Netscape are
* Copyright (C) 1994-2000 Netscape Communications Corporation. All
* Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the
* terms of the GNU General Public License Version 2 or later (the
* "GPL"), in which case the provisions of the GPL are applicable
* instead of those above. If you wish to allow use of your
* version of this file only under the terms of the GPL and not to
* allow others to use your version of this file under the MPL,
* indicate your decision by deleting the provisions above and
* replace them with the notice and other provisions required by
* the GPL. If you do not delete the provisions above, a recipient
* may use your version of this file under either the MPL or the
* GPL.
*
* $Id: ssl.h,v 1.6 2001/01/18 16:36:41 wtc%netscape.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"
#if defined(_WIN32) && !defined(IN_LIBSSL) && !defined(NSS_USE_STATIC_LIBS)
#define SSL_IMPORT extern __declspec(dllimport)
#else
#define SSL_IMPORT extern
#endif
/* 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)
typedef struct SSL3StatisticsStr {
/* statistics from ssl3_SendClientHello (sch) */
long sch_sid_cache_hits;
long sch_sid_cache_misses;
long sch_sid_cache_not_ok;
/* statistics from ssl3_HandleServerHello (hsh) */
long hsh_sid_cache_hits;
long hsh_sid_cache_misses;
long hsh_sid_cache_not_ok;
/* statistics from ssl3_HandleClientHello (hch) */
long hch_sid_cache_hits;
long hch_sid_cache_misses;
long hch_sid_cache_not_ok;
} SSL3Statistics;
SEC_BEGIN_PROTOS
/*
** 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
#define SSL_SOCKS 2
#define SSL_REQUEST_CERTIFICATE 3
#define SSL_HANDSHAKE_AS_CLIENT 5 /* force accept to hs as client */
#define SSL_HANDSHAKE_AS_SERVER 6 /* force connect to hs as server */
#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 */
#define SSL_REQUIRE_CERTIFICATE 10
#define SSL_ENABLE_FDX 11 /* permit simultaneous read/write */
#define SSL_V2_COMPATIBLE_HELLO 12 /* send v3 client hello in v2 fmt */
#define SSL_ENABLE_TLS 13 /* enable TLS (off by default) */
#define SSL_ROLLBACK_DETECTION 14 /* for compatibility, default: on */
#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. */
/*
** 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 int SSL_ForceHandshake(PRFileDesc *fd);
/*
** 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 SSL, and will be freed when the socket is closed.
*/
SSL_IMPORT int 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
/*
** 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 int (*SSLAuthCertificate)(void *arg, PRFileDesc *fd, PRBool checkSig,
PRBool isServer);
SSL_IMPORT int SSL_AuthCertificateHook(PRFileDesc *fd, SSLAuthCertificate f,
void *arg);
/* An implementation of the certificate authentication hook */
SSL_IMPORT int 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 int (*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 int 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 int 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 int (*SSLBadCertHandler)(void *arg, PRFileDesc *fd);
SSL_IMPORT int 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.
*/
/* Key Exchange values */
typedef enum {
kt_null = 0,
kt_rsa = 1,
kt_dh = 2,
kt_fortezza = 3,
kt_kea_size
} SSLKEAType;
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 int 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 int SSL_ConfigMPServerSIDCache(int maxCacheEntries,
PRUint32 timeout,
PRUint32 ssl3_timeout,
const char * directory);
/* 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 (*SSLHandshakeCallback)(PRFileDesc *fd, void *client_data);
SSL_IMPORT int 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 int SSL_ReHandshake(PRFileDesc *fd, PRBool flushCache);
#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 int SSL_RedoHandshake(PRFileDesc *fd);
#endif
/*
* Allow the application to pass a URL or hostname into the SSL library
*/
SSL_IMPORT int 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 int 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 SSL session cache.
*/
SSL_IMPORT void SSL_ClearSessionCache(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 int 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);
SEC_END_PROTOS
#endif /* __ssl_h_ */