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/*
* Copyright (c) 1997 Metro Link Incorporated
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
* OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
* Except as contained in this notice, the name of the Metro Link shall not be
* used in advertising or otherwise to promote the sale, use or other dealings
* in this Software without prior written authorization from Metro Link.
*
*/
/*
* Copyright (c) 1997-2003 by The XFree86 Project, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
* Except as contained in this notice, the name of the copyright holder(s)
* and author(s) shall not be used in advertising or otherwise to promote
* the sale, use or other dealings in this Software without prior written
* authorization from the copyright holder(s) and author(s).
*/
#ifdef HAVE_XORG_CONFIG_H
#include <xorg-config.h>
#endif
#include "os.h"
#include "xf86Parser.h"
#include "xf86tokens.h"
#include "Configint.h"
#include <unistd.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <signal.h>
#include <errno.h>
#if defined(HAVE_SETEUID) && defined(_POSIX_SAVED_IDS) && _POSIX_SAVED_IDS > 0
#define HAS_SAVED_IDS_AND_SETEUID
#endif
#if defined(WIN32)
#define HAS_NO_UIDS
#endif
#ifdef HAS_NO_UIDS
#define doWriteConfigFile xf86writeConfigFile
#define Local /**/
#else
#define Local static
#endif
Local int
doWriteConfigFile(const char *filename, XF86ConfigPtr cptr)
{
FILE *cf;
if ((cf = fopen(filename, "w")) == NULL) {
return 0;
}
if (cptr->conf_comment)
fprintf(cf, "%s\n", cptr->conf_comment);
xf86printLayoutSection(cf, cptr->conf_layout_lst);
if (cptr->conf_files != NULL) {
fprintf(cf, "Section \"Files\"\n");
xf86printFileSection(cf, cptr->conf_files);
fprintf(cf, "EndSection\n\n");
}
if (cptr->conf_modules != NULL) {
fprintf(cf, "Section \"Module\"\n");
xf86printModuleSection(cf, cptr->conf_modules);
fprintf(cf, "EndSection\n\n");
}
xf86printVendorSection(cf, cptr->conf_vendor_lst);
xf86printServerFlagsSection(cf, cptr->conf_flags);
xf86printInputSection(cf, cptr->conf_input_lst);
xf86printInputClassSection(cf, cptr->conf_inputclass_lst);
xf86printOutputClassSection(cf, cptr->conf_outputclass_lst);
xf86printVideoAdaptorSection(cf, cptr->conf_videoadaptor_lst);
xf86printModesSection(cf, cptr->conf_modes_lst);
xf86printMonitorSection(cf, cptr->conf_monitor_lst);
xf86printDeviceSection(cf, cptr->conf_device_lst);
xf86printScreenSection(cf, cptr->conf_screen_lst);
xf86printDRISection(cf, cptr->conf_dri);
xf86printExtensionsSection(cf, cptr->conf_extensions);
fclose(cf);
return 1;
}
#ifndef HAS_NO_UIDS
int
xf86writeConfigFile(const char *filename, XF86ConfigPtr cptr)
{
int ret;
#if !defined(HAS_SAVED_IDS_AND_SETEUID)
int pid, p;
int status;
void (*csig) (int);
#else
int ruid, euid;
#endif
if (getuid() != geteuid()) {
#if !defined(HAS_SAVED_IDS_AND_SETEUID)
/* Need to fork to change ruid without loosing euid */
csig = signal(SIGCHLD, SIG_DFL);
switch ((pid = fork())) {
case -1:
ErrorF("xf86writeConfigFile(): fork failed (%s)\n",
strerror(errno));
return 0;
case 0: /* child */
if (setuid(getuid()) == -1)
FatalError("xf86writeConfigFile(): "
"setuid failed(%s)\n", strerror(errno));
ret = doWriteConfigFile(filename, cptr);
exit(ret);
break;
default: /* parent */
do {
p = waitpid(pid, &status, 0);
} while (p == -1 && errno == EINTR);
}
signal(SIGCHLD, csig);
if (p != -1 && WIFEXITED(status) && WEXITSTATUS(status) == 0)
return 1; /* success */
else
return 0;
#else /* HAS_SAVED_IDS_AND_SETEUID */
ruid = getuid();
euid = geteuid();
if (seteuid(ruid) == -1) {
ErrorF("xf86writeConfigFile(): seteuid(%d) failed (%s)\n",
ruid, strerror(errno));
return 0;
}
ret = doWriteConfigFile(filename, cptr);
if (seteuid(euid) == -1) {
ErrorF("xf86writeConfigFile(): seteuid(%d) failed (%s)\n",
euid, strerror(errno));
}
return ret;
#endif /* HAS_SAVED_IDS_AND_SETEUID */
}
else {
return doWriteConfigFile(filename, cptr);
}
}
#endif /* !HAS_NO_UIDS */
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