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/* $OpenBSD: server.c,v 1.18 2005/05/31 08:58:48 xsa Exp $ */
/*
* Copyright (c) 2004 Jean-Francois Brousseau <jfb@openbsd.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
* THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/types.h>
#include <sys/stat.h>
#include <errno.h>
#include <paths.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "cvs.h"
#include "log.h"
#include "proto.h"
/* argument vector built by the `Argument' and `Argumentx' requests */
char **cvs_args;
u_int cvs_nbarg = 0;
u_int cvs_utf8ok = 0;
u_int cvs_case = 0;
struct cvs_cmd cvs_cmd_server = {
CVS_OP_SERVER, 0, "server",
{ },
"Server mode",
"",
"",
NULL,
0,
NULL, NULL, NULL, NULL, NULL, NULL,
0
};
char cvs_server_tmpdir[MAXPATHLEN];
/*
* cvs_server()
*
* Implement the `cvs server' command. As opposed to the general method of
* CVS client/server implementation, the cvs program merely acts as a
* redirector to the cvs daemon for most of the tasks.
*
* The `cvs server' command is only used on the server side of a remote
* cvs command. With this command, the cvs program starts listening on
* standard input for CVS protocol requests.
*/
int
cvs_server(int argc, char **argv)
{
int l, ret;
size_t len;
char reqbuf[512];
if (argc != 1) {
return (CVS_EX_USAGE);
}
/* make sure standard in and standard out are line-buffered */
(void)setvbuf(stdin, NULL, _IOLBF, 0);
(void)setvbuf(stdout, NULL, _IOLBF, 0);
/* create the temporary directory */
l = snprintf(cvs_server_tmpdir, sizeof(cvs_server_tmpdir),
"%scvs-serv%d", _PATH_TMP, getpid());
if (l == -1 || l >= (int)sizeof(cvs_server_tmpdir)) {
errno = ENAMETOOLONG;
cvs_log(LP_ERRNO, "%s", cvs_server_tmpdir);
return (CVS_EX_DATA);
}
if (mkdir(cvs_server_tmpdir, 0700) == -1) {
cvs_log(LP_ERRNO, "failed to create temporary directory '%s'",
cvs_server_tmpdir);
return (CVS_EX_FILE);
}
if (chdir(cvs_server_tmpdir) == -1) {
cvs_log(LP_ERRNO, "failed to change to temporary directory '%s'",
cvs_server_tmpdir);
return (CVS_EX_FILE);
}
for (;;) {
if (fgets(reqbuf, sizeof(reqbuf), stdin) == NULL) {
if (feof(stdin))
break;
else if (ferror(stdin))
return (CVS_EX_DATA);
}
len = strlen(reqbuf);
if (len == 0)
continue;
else if (reqbuf[len - 1] != '\n') {
cvs_log(LP_ERR, "truncated request");
return (CVS_EX_PROTO);
}
reqbuf[--len] = '\0';
cvs_req_handle(reqbuf);
}
/* cleanup the temporary tree */
ret = cvs_remove_dir(cvs_server_tmpdir);
return (ret);
}
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