File: [local] / src / usr.bin / cvs / Attic / req.c (download)
Revision 1.43, Tue Mar 28 07:17:17 2006 UTC (18 years, 2 months ago) by ray
Branch: MAIN
Changes since 1.42: +2 -4 lines
xmalloc(num * size) -> xcalloc(num, size)
asprintf -> xasprintf
Remove asprintf check, which was non-portable anyway.
``okidoki'' xsa@
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/* $OpenBSD: req.c,v 1.43 2006/03/28 07:17:17 ray 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 "includes.h"
#include "buf.h"
#include "cvs.h"
#include "log.h"
#include "proto.h"
extern char *cvs_rootstr;
extern int cvs_compress;
extern char *cvs_rsh;
extern int cvs_trace;
extern int cvs_nolog;
extern int cvs_readonly;
static int cvs_req_set(int, char *);
static int cvs_req_noop(int, char *);
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_expandmod(int, char *);
static int cvs_req_directory(int, char *);
static int cvs_req_useunchanged(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_gzipstream(int, char *);
static int cvs_req_entry(int, char *);
static int cvs_req_filestate(int, char *);
static int cvs_req_command(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 },
{ cvs_req_entry },
{ NULL },
{ NULL }, /* 10 */
{ cvs_req_filestate },
{ cvs_req_filestate },
{ cvs_req_filestate },
{ cvs_req_useunchanged },
{ NULL },
{ NULL },
{ cvs_req_filestate },
{ cvs_req_case },
{ NULL },
{ cvs_req_argument }, /* 20 */
{ cvs_req_argument },
{ cvs_req_globalopt },
{ cvs_req_gzipstream },
{ NULL },
{ NULL },
{ NULL },
{ NULL },
{ NULL },
{ NULL },
{ NULL }, /* 30 */
{ NULL },
{ NULL },
{ NULL },
{ cvs_req_set },
{ cvs_req_expandmod },
{ cvs_req_command },
{ NULL },
{ NULL },
{ NULL },
{ NULL }, /* 40 */
{ NULL },
{ NULL },
{ NULL },
{ NULL },
{ cvs_req_command },
{ cvs_req_command },
{ NULL },
{ cvs_req_command },
{ cvs_req_command },
{ cvs_req_command }, /* 50 */
{ cvs_req_command },
{ cvs_req_command },
{ cvs_req_command },
{ cvs_req_command },
{ cvs_req_command },
{ cvs_req_command },
{ cvs_req_command },
{ cvs_req_command },
{ cvs_req_command },
{ cvs_req_command }, /* 60 */
{ NULL },
{ cvs_req_command },
{ cvs_req_command },
{ cvs_req_noop },
{ cvs_req_command },
{ cvs_req_command },
{ cvs_req_command },
{ cvs_req_command },
{ cvs_req_command },
};
/*
* Argument array built by `Argument' and `Argumentx' requests.
*/
static char *cvs_req_args[CVS_PROTO_MAXARG];
/* start at 1, because 0 will be the command name */
static int cvs_req_nargs = 1;
static char *cvs_req_modulename;
static char *cvs_req_rootpath;
static char *cvs_req_currentdir;
extern char cvs_server_tmpdir[MAXPATHLEN];
static CVSENTRIES *cvs_req_entf;
/*
* 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';
if ((req = cvs_req_getbyname(cmd)) == NULL)
fatal("cvs_req_handle: cvs_req_getbyname failed");
else if (cvs_req_swtab[req->req_id].hdlr == NULL)
fatal("handler for `%s' not implemented", cmd);
return (*cvs_req_swtab[req->req_id].hdlr)(req->req_id, cp);
}
/*
* cvs_req_noop()
*/
static int
cvs_req_noop(int reqid, char *line)
{
cvs_sendresp(CVS_RESP_OK, NULL);
return (0);
}
static int
cvs_req_root(int reqid, char *line)
{
if (cvs_req_rootpath != NULL) {
cvs_log(LP_ERR, "duplicate Root request received");
cvs_printf("Protocol error: Duplicate Root request");
return (-1);
}
cvs_req_rootpath = xstrdup(line);
cvs_rootstr = cvs_req_rootpath;
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);
cvs_sendresp(CVS_RESP_OK, NULL);
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)
{
int pwd;
size_t dirlen;
char rdir[MAXPATHLEN];
char *repo, *s, *p;
pwd = (!strcmp(line, "."));
cvs_getln(NULL, rdir, sizeof(rdir));
STRIP_SLASH(rdir);
if (cvs_req_currentdir != NULL)
xfree(cvs_req_currentdir);
cvs_req_currentdir = xstrdup(rdir);
dirlen = strlen(cvs_req_currentdir);
/*
* Lets make sure we always start at the correct
* directory.
*/
cvs_chdir(cvs_server_tmpdir, 1);
/*
* Set repository path.
*/
if (strlen(cvs_req_rootpath) < dirlen) {
s = cvs_req_currentdir + strlen(cvs_req_rootpath) + 1;
if (s >= (cvs_req_currentdir + dirlen))
fatal("you're bad, go away");
} else
s = cvs_req_currentdir;
repo = xstrdup(s);
/*
* Skip back "foo/bar" part, so we can feed the repo
* as a startpoint for cvs_create_dir().
*/
if (!pwd) {
s = repo + strlen(repo) - strlen(line) - 1;
if (*s != '/')
fatal("cvs_req_directory: malformed directory");
*s = '\0';
}
/*
* Obtain the modulename, we only need to do this at
* the very first time we get a Directory request.
*/
if (cvs_req_modulename == NULL) {
if ((p = strchr(repo, '/')) != NULL)
*p = '\0';
cvs_req_modulename = xstrdup(repo);
if (p != NULL)
*p = '/';
/*
* Now, create the admin files in the top-level
* directory for the temp repo.
*/
cvs_mkadmin(cvs_server_tmpdir, cvs_rootstr, repo, NULL,
NULL, 0);
}
/*
* create the directory plus the administrative files.
*/
if (cvs_create_dir(line, 1, cvs_rootstr, repo) < 0) {
xfree(repo);
return (-1);
}
/*
* cvs_create_dir() has already put us in the correct directory
* so now open it's Entry file for incoming files.
*/
if (cvs_req_entf != NULL)
cvs_ent_close(cvs_req_entf);
cvs_req_entf = cvs_ent_open(".", O_RDWR);
if (cvs_req_entf == NULL)
fatal("failed to open Entry file for %s", line);
xfree(repo);
return (0);
}
static int
cvs_req_entry(int reqid, char *line)
{
struct cvs_ent *ent;
/* parse received entry */
if ((ent = cvs_ent_parse(line)) == NULL)
return (-1);
/* add it to the entry file and done */
if (cvs_ent_add(cvs_req_entf, ent) < 0)
fatal("cvs_req_entry: cvs_ent_add: `%s'", ent->ce_name);
/* XXX */
cvs_ent_write(cvs_req_entf);
return (0);
}
/*
* cvs_req_filestate()
*
* Handler for the `Modified', `Is-Modified', `Unchanged' and `Questionable'
* requests, which are all used to report the assumed state of a file from the
* client.
*/
static int
cvs_req_filestate(int reqid, char *line)
{
int ret;
mode_t fmode;
BUF *fdata;
struct cvs_ent *ent;
ret = 0;
switch (reqid) {
case CVS_REQ_MODIFIED:
fdata = cvs_recvfile(NULL, &fmode);
if (fdata == NULL)
return (-1);
/* write the file */
cvs_buf_write(fdata, line, fmode);
cvs_buf_free(fdata);
break;
case CVS_REQ_ISMODIFIED:
break;
case CVS_REQ_UNCHANGED:
ent = cvs_ent_get(cvs_req_entf, line);
if (ent == NULL) {
cvs_log(LP_ERR,
"received Unchanged request "
"for a non-existing file");
ret = -1;
} else {
ent->ce_status = CVS_ENT_UPTODATE;
}
break;
case CVS_REQ_QUESTIONABLE:
cvs_printf("? %s\n", line);
break;
default:
cvs_log(LP_ERR, "wrong request id type");
ret = -1;
break;
}
/* XXX */
cvs_req_entf->cef_flags &= ~CVS_ENTF_SYNC;
cvs_ent_write(cvs_req_entf);
return (ret);
}
/*
* cvs_req_expandmod()
*
*/
static int
cvs_req_expandmod(int reqid, char *line)
{
cvs_sendresp(CVS_RESP_OK, NULL);
return (0);
}
/*
* cvs_req_useunchanged()
*
* Handler for the `UseUnchanged' requests. The protocol documentation
* specifies that this request must be supported by the server and must be
* sent by the client, though it gives no clue regarding its use.
*/
static int
cvs_req_useunchanged(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_set(int reqid, char *line)
{
char *cp, *lp;
lp = xstrdup(line);
if ((cp = strchr(lp, '=')) == NULL)
fatal("error in Set request (no = in variable assignment)");
*(cp++) = '\0';
if (cvs_var_set(lp, cp) < 0) {
xfree(lp);
return (-1);
}
xfree(lp);
return (0);
}
static int
cvs_req_argument(int reqid, char *line)
{
char *nap;
if (cvs_req_nargs == CVS_PROTO_MAXARG)
fatal("too many arguments");
if (reqid == CVS_REQ_ARGUMENT) {
cvs_req_args[cvs_req_nargs] = xstrdup(line);
cvs_req_nargs++;
} else if (reqid == CVS_REQ_ARGUMENTX) {
if (cvs_req_nargs == 0)
cvs_log(LP_WARN, "no argument to append to");
else {
xasprintf(&nap, "%s%s", cvs_req_args[cvs_req_nargs - 1],
line);
xfree(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'))
fatal("invalid `Global_option' request format");
switch (*(line + 1)) {
case 'l':
cvs_nolog = 1;
break;
case 'n':
cvs_noexec = 1;
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);
}
/*
* cvs_req_gzipstream()
*
* Handler for the `Gzip-stream' request, which enables compression at the
* level given along with the request. After this request has been processed,
* all further connection data should be compressed.
*/
static int
cvs_req_gzipstream(int reqid, char *line)
{
char *ep;
long val;
val = strtol(line, &ep, 10);
if ((line[0] == '\0') || (*ep != '\0'))
fatal("invalid Gzip-stream level `%s'", line);
else if ((errno == ERANGE) && ((val < 0) || (val > 9)))
fatal("Gzip-stream level %ld out of range", val);
cvs_compress = (int)val;
return (0);
}
/*
* cvs_req_command()
*
* Generic request handler for CVS command requests (i.e. diff, update, tag).
*/
static int
cvs_req_command(int reqid, char *line)
{
struct cvs_cmd *cmdp;
cmdp = cvs_findcmdbyreq(reqid);
if (cmdp == NULL) {
cvs_sendresp(CVS_RESP_ERROR, NULL);
return (-1);
}
/* close the Entry file if it's still open */
if (cvs_req_entf != NULL)
cvs_ent_close(cvs_req_entf);
/* fill in the command name */
cvs_req_args[0] = cmdp->cmd_name;
/* switch to the correct directory */
if (cmdp->cmd_op != CVS_OP_VERSION)
cvs_chdir(cvs_server_tmpdir, 1);
if (cvs_startcmd(cmdp, cvs_req_nargs, cvs_req_args) == 0)
cvs_sendresp(CVS_RESP_OK, NULL);
return (0);
}