b9c991f486
flag makes portal tcp operation work.
215 lines
5.0 KiB
C
215 lines
5.0 KiB
C
/*
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* Copyright (c) 1992, 1993
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* The Regents of the University of California. All rights reserved.
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* All rights reserved.
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*
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* This code is derived from software donated to Berkeley by
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* Jan-Simon Pendry.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)activate.c 8.3 (Berkeley) 4/28/95
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*/
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#ifndef lint
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static const char rcsid[] =
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"$Id: activate.c,v 1.5 1998/07/06 07:19:23 charnier Exp $";
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#endif /* not lint */
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#include <errno.h>
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#include <string.h>
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#include <unistd.h>
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#include <sys/types.h>
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#include <sys/param.h>
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#include <sys/socket.h>
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#include <sys/syslog.h>
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#include <sys/uio.h>
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#include "portald.h"
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/*
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* Scan the providers list and call the
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* appropriate function.
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*/
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static int activate_argv(pcr, key, v, so, fdp)
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struct portal_cred *pcr;
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char *key;
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char **v;
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int so;
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int *fdp;
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{
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provider *pr;
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for (pr = providers; pr->pr_match; pr++)
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if (strcmp(v[0], pr->pr_match) == 0)
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return ((*pr->pr_func)(pcr, key, v, so, fdp));
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return (ENOENT);
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}
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static int get_request(so, pcr, key, klen)
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int so;
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struct portal_cred *pcr;
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char *key;
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int klen;
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{
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struct iovec iov[2];
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struct msghdr msg;
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int n;
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iov[0].iov_base = (caddr_t) pcr;
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iov[0].iov_len = sizeof(*pcr);
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iov[1].iov_base = key;
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iov[1].iov_len = klen;
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memset(&msg, 0, sizeof(msg));
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msg.msg_iov = iov;
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msg.msg_iovlen = 2;
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n = recvmsg(so, &msg, 0);
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if (n < 0)
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return (errno);
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if (n <= sizeof(*pcr))
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return (EINVAL);
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n -= sizeof(*pcr);
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key[n] = '\0';
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return (0);
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}
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static void send_reply(so, fd, error)
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int so;
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int fd;
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int error;
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{
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int n;
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struct iovec iov;
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struct msghdr msg;
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struct {
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struct cmsghdr cmsg;
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int fd;
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} ctl;
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/*
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* Line up error code. Don't worry about byte ordering
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* because we must be sending to the local machine.
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*/
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iov.iov_base = (caddr_t) &error;
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iov.iov_len = sizeof(error);
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/*
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* Build a msghdr
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*/
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memset(&msg, 0, sizeof(msg));
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msg.msg_iov = &iov;
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msg.msg_iovlen = 1;
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/*
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* If there is a file descriptor to send then
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* construct a suitable rights control message.
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*/
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if (fd >= 0) {
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ctl.fd = fd;
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ctl.cmsg.cmsg_len = sizeof(ctl);
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ctl.cmsg.cmsg_level = SOL_SOCKET;
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ctl.cmsg.cmsg_type = SCM_RIGHTS;
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msg.msg_control = (caddr_t) &ctl;
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msg.msg_controllen = ctl.cmsg.cmsg_len;
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}
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/*
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* Send to kernel...
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*/
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if ((n = sendmsg(so, &msg, 0)) < 0)
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syslog(LOG_ERR, "send: %s", strerror(errno));
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#ifdef DEBUG
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fprintf(stderr, "sent %d bytes\n", n);
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#endif
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sleep(1); /*XXX*/
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#ifdef notdef
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if (shutdown(so, 2) < 0)
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syslog(LOG_ERR, "shutdown: %s", strerror(errno));
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#endif
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/*
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* Throw away the open file descriptor
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*/
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(void) close(fd);
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}
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void activate(q, so)
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qelem *q;
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int so;
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{
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struct portal_cred pcred;
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char key[MAXPATHLEN+1];
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int error;
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char **v;
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int fd = -1;
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/*
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* Read the key from the socket
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*/
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error = get_request(so, &pcred, key, sizeof(key));
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if (error) {
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syslog(LOG_ERR, "activate: recvmsg: %s", strerror(error));
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goto drop;
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}
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#ifdef DEBUG
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fprintf(stderr, "lookup key %s\n", key);
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#endif
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/*
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* Find a match in the configuration file
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*/
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v = conf_match(q, key);
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/*
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* If a match existed, then find an appropriate portal
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* otherwise simply return ENOENT.
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*/
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if (v) {
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error = activate_argv(&pcred, key, v, so, &fd);
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if (error)
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fd = -1;
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else if (fd < 0)
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error = -1;
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} else {
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error = ENOENT;
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}
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if (error >= 0)
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send_reply(so, fd, error);
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drop:;
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close(so);
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}
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