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/*
* The contents of this file are subject to the AOLserver 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://aolserver.com/.
*
* 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 AOLserver Code and related documentation
* distributed by AOL.
*
* The Initial Developer of the Original Code is America Online,
* Inc. Portions created by AOL are Copyright (C) 1999 America Online,
* Inc. All Rights Reserved.
*
* Alternatively, the contents of this file may be used under the terms
* of the GNU General Public License (the "GPL"), in which case the
* provisions of 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
* License, 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 License or the GPL.
*/
/*
* nsssl.c --
*
* Call internal Ns_DriverInit.
*
*/
#include "ns.h"
#include "ssl.h"
#ifdef SSL_EXPORT
#define DRIVER_NAME "nsssle"
#else
#define DRIVER_NAME "nsssl"
#endif
static Ns_DriverProc SSLProc;
NS_EXPORT int Ns_ModuleVersion = 1;
/*
*----------------------------------------------------------------------
*
* Ns_ModuleInit --
*
* Initialize the SSL driver.
*
* Results:
* NS_OK if initialized ok, NS_ERROR otherwise.
*
* Side effects:
* See Ns_DriverInit.
*
*----------------------------------------------------------------------
*/
NS_EXPORT int
Ns_ModuleInit(char *server, char *module)
{
Ns_DriverInitData init;
char *cert, *key, *path;
void *dssl;
int n;
/*
* Initialize the global and per-driver SSL.
*/
path = Ns_ConfigGetPath(server, module, NULL);
if (NsSSLInitialize(server, module) != NS_OK) {
Ns_Log(Error, "%s: failed to initialize ssl driver", module);
return NS_ERROR;
}
cert = Ns_ConfigGet(path, "certfile");
if (cert == NULL) {
Ns_Log(Warning, "%s: certfile not specified", module);
return NS_OK;
}
#ifdef SSL_EXPORT
n = 40;
#else
n = 128;
#endif
Ns_Log(Notice, "%s: initialized with %d-bit encryption", module, n);
#ifdef HAVE_SWIFT
Ns_Log(Notice, "%s: SUPPORTS RAINBOW CRYPTOSWIFT HARDWARE SSL ACCELERATOR",
module);
#endif
key = Ns_ConfigGet(path, "keyfile");
dssl = NsSSLCreateServer(cert, key);
if (dssl == NULL) {
return NS_ERROR;
}
/*
* Initialize the driver without the async option so all I/O
* happens in the connection thread, avoiding any possible
* blocking in the driver thread due to SSL overhead. Set
* the SSL option to use the SSL port and protocol defaults.
*/
init.version = NS_DRIVER_VERSION_1;
init.name = DRIVER_NAME;
init.proc = SSLProc;
init.arg = dssl;
init.opts = NS_DRIVER_SSL;
init.path = NULL;
return Ns_DriverInit(server, module, &init);
}
/*
*----------------------------------------------------------------------
*
* SSLProc --
*
* SSL driver callback proc. This driver performs the necessary
* handshake and encryption of SSL.
*
* Results:
* For close, always 0. For keep, 0 if connection could be
* properly flushed, -1 otherwise. For send and recv, # of bytes
* processed or -1 on error.
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
static int
SSLProc(Ns_DriverCmd cmd, Ns_Sock *sock, struct iovec *bufs, int nbufs)
{
Ns_Driver *driver = sock->driver;
int n, total;
switch (cmd) {
case DriverRecv:
case DriverSend:
/*
* On first I/O, initialize the connection context.
*/
if (sock->arg == NULL) {
n = driver->recvwait;
if (n > driver->sendwait) {
n = driver->sendwait;
}
sock->arg = NsSSLCreateConn(sock->sock, n, driver->arg);
if (sock->arg == NULL) {
return -1;
}
}
/*
* Process each buffer one at a time.
*/
total = 0;
do {
if (cmd == DriverSend) {
n = NsSSLSend(sock->arg, bufs->iov_base, bufs->iov_len);
} else {
n = NsSSLRecv(sock->arg, bufs->iov_base, bufs->iov_len);
}
if (n < 0 && total > 0) {
/* NB: Mask error if some bytes were read. */
n = 0;
}
++bufs;
total += n;
} while (n > 0 && --nbufs > 0);
n = total;
break;
case DriverKeep:
if (sock->arg != NULL && NsSSLFlush(sock->arg) == NS_OK) {
n = 0;
} else {
n = -1;
}
break;
case DriverClose:
if (sock->arg != NULL) {
(void) NsSSLFlush(sock->arg);
NsSSLDestroyConn(sock->arg);
sock->arg = NULL;
}
n = 0;
break;
default:
/* Unsupported command. */
n = -1;
break;
}
return n;
}
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