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/* $OpenBSD: req.c,v 1.5 2004/08/06 14:49:03 jfb 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 <fcntl.h>
#include <stdio.h>
#include <errno.h>
#include <stdlib.h>
#include <unistd.h>
#include <signal.h>
#include <string.h>
#include <sysexits.h>
#ifdef CVS_ZLIB
#include <zlib.h>
#endif
#include "buf.h"
#include "cvs.h"
#include "log.h"
#include "file.h"
#include "proto.h"
extern int verbosity;
extern int cvs_compress;
extern char *cvs_rsh;
extern int cvs_trace;
extern int cvs_nolog;
extern int cvs_readonly;
static int cvs_req_root (int, char *);
static int cvs_req_validreq (int, char *);
static int cvs_req_validresp (int, char *);
static int cvs_req_directory (int, char *);
static int cvs_req_case (int, char *);
static int cvs_req_argument (int, char *);
static int cvs_req_globalopt (int, char *);
static int cvs_req_version (int, char *);
struct cvs_reqhdlr {
int (*hdlr)(int, char *);
} cvs_req_swtab[CVS_REQ_MAX + 1] = {
{ NULL },
{ cvs_req_root },
{ cvs_req_validreq },
{ cvs_req_validresp },
{ cvs_req_directory },
{ NULL },
{ NULL },
{ NULL },
{ NULL },
{ NULL },
{ NULL }, /* 10 */
{ NULL },
{ NULL },
{ NULL },
{ NULL },
{ NULL },
{ NULL },
{ NULL },
{ cvs_req_case },
{ NULL },
{ cvs_req_argument }, /* 20 */
{ cvs_req_argument },
{ cvs_req_globalopt },
{ NULL },
{ NULL },
{ NULL },
{ NULL },
{ NULL },
{ NULL },
{ NULL },
{ NULL }, /* 30 */
{ NULL },
{ NULL },
{ NULL },
{ NULL },
{ NULL },
{ NULL },
{ NULL },
{ NULL },
{ NULL },
{ NULL }, /* 40 */
{ NULL },
{ NULL },
{ NULL },
{ NULL },
{ NULL },
{ NULL },
{ NULL },
{ NULL },
{ NULL },
{ NULL }, /* 50 */
{ NULL },
{ NULL },
{ NULL },
{ NULL },
{ NULL },
{ NULL },
{ NULL },
{ NULL },
{ NULL },
{ NULL }, /* 60 */
{ NULL },
{ NULL },
{ NULL },
{ NULL },
{ NULL },
{ NULL },
{ NULL },
{ NULL },
{ cvs_req_version },
};
/*
* Argument array built by `Argument' and `Argumentx' requests.
*/
static char *cvs_req_args[CVS_PROTO_MAXARG];
static int cvs_req_nargs = 0;
/*
* cvs_req_handle()
*
* Generic request handler dispatcher. The handler expects the first line
* of the command as single argument.
* Returns the return value of the command on success, or -1 on failure.
*/
int
cvs_req_handle(char *line)
{
char *cp, *cmd;
struct cvs_req *req;
cmd = line;
cp = strchr(cmd, ' ');
if (cp != NULL)
*(cp++) = '\0';
req = cvs_req_getbyname(cmd);
if (req == NULL)
return (-1);
else if (cvs_req_swtab[req->req_id].hdlr == NULL) {
cvs_log(LP_ERRNO, "handler for `%s' not implemented", cmd);
return (-1);
}
return (*cvs_req_swtab[req->req_id].hdlr)(req->req_id, cp);
}
static int
cvs_req_root(int reqid, char *line)
{
return (0);
}
static int
cvs_req_validreq(int reqid, char *line)
{
char *vreq;
vreq = cvs_req_getvalid();
if (vreq == NULL)
return (-1);
cvs_sendresp(CVS_RESP_VALIDREQ, vreq);
return (0);
}
static int
cvs_req_validresp(int reqid, char *line)
{
char *sp, *ep;
struct cvs_resp *resp;
sp = line;
do {
ep = strchr(sp, ' ');
if (ep != NULL)
*(ep++) = '\0';
resp = cvs_resp_getbyname(sp);
if (resp != NULL)
;
if (ep != NULL)
sp = ep + 1;
} while (ep != NULL);
return (0);
}
static int
cvs_req_directory(int reqid, char *line)
{
return (0);
}
/*
* cvs_req_case()
*
* Handler for the `Case' requests, which toggles case sensitivity ON or OFF
*/
static int
cvs_req_case(int reqid, char *line)
{
cvs_nocase = 1;
return (0);
}
static int
cvs_req_argument(int reqid, char *line)
{
char *nap;
if (cvs_req_nargs == CVS_PROTO_MAXARG) {
cvs_log(LP_ERR, "too many arguments");
return (-1);
}
if (reqid == CVS_REQ_ARGUMENT) {
cvs_req_args[cvs_req_nargs] = strdup(line);
if (cvs_req_args[cvs_req_nargs] == NULL) {
cvs_log(LP_ERRNO, "failed to copy argument");
return (-1);
}
cvs_req_nargs++;
}
else if (reqid == CVS_REQ_ARGUMENTX) {
if (cvs_req_nargs == 0)
cvs_log(LP_WARN, "no argument to append to");
else {
asprintf(&nap, "%s%s", cvs_req_args[cvs_req_nargs - 1],
line);
if (nap == NULL) {
cvs_log(LP_ERRNO,
"failed to append to argument");
return (-1);
}
free(cvs_req_args[cvs_req_nargs - 1]);
cvs_req_args[cvs_req_nargs - 1] = nap;
}
}
return (0);
}
static int
cvs_req_globalopt(int reqid, char *line)
{
if ((*line != '-') || (*(line + 2) != '\0')) {
cvs_log(LP_ERR,
"invalid `Global_option' request format");
return (-1);
}
switch (*(line + 1)) {
case 'l':
cvs_nolog = 1;
break;
case 'n':
break;
case 'Q':
verbosity = 0;
break;
case 'q':
if (verbosity > 1)
verbosity = 1;
break;
case 'r':
cvs_readonly = 1;
break;
case 't':
cvs_trace = 1;
break;
default:
cvs_log(LP_ERR, "unknown global option `%s'", line);
return (-1);
}
return (0);
}
static int
cvs_req_version(int reqid, char *line)
{
cvs_printf("%s\n", CVS_VERSION);
return (0);
}
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