mirror of
https://git.hardenedbsd.org/hardenedbsd/HardenedBSD.git
synced 2024-11-19 01:11:05 +01:00
2313673135
Could not compile it (on thud) because ttychar.h was still broken. Reviewed by: Submitted by: guido
94 lines
2.2 KiB
C
94 lines
2.2 KiB
C
#include <sys/types.h>
|
|
#include <stdio.h>
|
|
#include <syslog.h>
|
|
#include <string.h>
|
|
#include <errno.h>
|
|
#include <dirent.h>
|
|
|
|
#include "pathnames.h"
|
|
|
|
#define WSPACE " \t\n"
|
|
|
|
void reset_fbtab __P((char *tty));
|
|
void reset_protect __P((char *table, char *path, int mask));
|
|
|
|
/*
|
|
* reset_fbtab - reset ownership to root/wheel and apply protections
|
|
* specified in /etc/fbtab or logindevperm
|
|
*/
|
|
|
|
void
|
|
reset_fbtab(tty)
|
|
char *tty;
|
|
{
|
|
FILE *fp;
|
|
char buf[BUFSIZ];
|
|
char *devname;
|
|
char *cp;
|
|
int prot;
|
|
char *table;
|
|
|
|
if ((fp = fopen(table = _PATH_FBTAB, "r")) == 0
|
|
&& (fp = fopen(table = _PATH_LOGINDEVPERM, "r")) == 0)
|
|
return;
|
|
|
|
while (fgets(buf, sizeof(buf), fp)) {
|
|
if (cp = strchr(buf, '#'))
|
|
*cp = 0; /* strip comment */
|
|
if ((cp = devname = strtok(buf, WSPACE)) == 0)
|
|
continue; /* empty or comment */
|
|
if (strncmp(devname, "/dev/", 5) != 0
|
|
|| (cp = strtok((char *) 0, WSPACE)) == 0
|
|
|| *cp != '0'
|
|
|| sscanf(cp, "%o", &prot) == 0
|
|
|| prot == 0
|
|
|| (prot & 0777) != prot
|
|
|| (cp = strtok((char *) 0, WSPACE)) == 0) {
|
|
syslog(LOG_ERR, "%s: bad entry: %s", table, cp ? cp : "(null)");
|
|
continue;
|
|
}
|
|
if (strcmp(devname, tty) == 0) {
|
|
for (cp = strtok(cp, ":"); cp; cp = strtok((char *) 0, ":")) {
|
|
reset_protect(table, cp, prot);
|
|
}
|
|
}
|
|
}
|
|
fclose(fp);
|
|
}
|
|
|
|
/* reset_protect - protect one device entry */
|
|
|
|
void
|
|
reset_protect(table, path, mask)
|
|
char *table;
|
|
char *path;
|
|
int mask;
|
|
{
|
|
char buf[BUFSIZ];
|
|
int pathlen = strlen(path);
|
|
struct dirent *ent;
|
|
DIR *dir;
|
|
|
|
if (strcmp("/*", path + pathlen - 2) != 0) {
|
|
if (chmod(path, mask) && errno != ENOENT)
|
|
syslog(LOG_ERR, "%s: chmod(%s): %m", table, path);
|
|
if (chown(path, 0, 0) && errno != ENOENT)
|
|
syslog(LOG_ERR, "%s: chown(%s): %m", table, path);
|
|
} else {
|
|
strcpy(buf, path);
|
|
buf[pathlen - 1] = 0;
|
|
if ((dir = opendir(buf)) == 0) {
|
|
syslog(LOG_ERR, "%s: opendir(%s): %m", table, path);
|
|
} else {
|
|
while ((ent = readdir(dir)) != 0) {
|
|
if (strcmp(ent->d_name, ".") != 0
|
|
&& strcmp(ent->d_name, "..") != 0) {
|
|
strcpy(buf + pathlen - 1, ent->d_name);
|
|
reset_protect(table, buf, mask);
|
|
}
|
|
}
|
|
closedir(dir);
|
|
}
|
|
}
|
|
}
|