#include <config.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <stdio.h>
#include <stdlib.h>
#ifdef HAVE_STDBOOL_H
# include <stdbool.h>
#else
# include "compat/stdbool.h"
#endif
#ifdef HAVE_STRING_H
# include <string.h>
#endif
#ifdef HAVE_STRINGS_H
# include <strings.h>
#endif
#include <unistd.h>
#include <ctype.h>
#include <errno.h>
#include <fcntl.h>
#include <limits.h>
#include <grp.h>
#include <pwd.h>
#include "sudo_plugin.h"
#include "sudo_compat.h"
static sudo_printf_t sudo_log;
extern void mysetgrfile(const char *);
extern void mysetgrent(void);
extern void myendgrent(void);
extern struct group *mygetgrnam(const char *);
static int
sample_init(int version, sudo_printf_t sudo_printf, char *const argv[])
{
struct stat sb;
sudo_log = sudo_printf;
if (SUDO_API_VERSION_GET_MAJOR(version) != GROUP_API_VERSION_MAJOR) {
sudo_log(SUDO_CONV_ERROR_MSG,
"group_file: incompatible major version %d, expected %d\n",
SUDO_API_VERSION_GET_MAJOR(version),
GROUP_API_VERSION_MAJOR);
return -1;
}
if (argv == NULL || argv[0] == NULL) {
sudo_log(SUDO_CONV_ERROR_MSG,
"group_file: path to group file not specified\n");
return -1;
}
if (stat(argv[0], &sb) != 0) {
sudo_log(SUDO_CONV_ERROR_MSG,
"group_file: %s: %s\n", argv[0], strerror(errno));
return -1;
}
if ((sb.st_mode & (S_IWGRP|S_IWOTH)) != 0) {
sudo_log(SUDO_CONV_ERROR_MSG,
"%s must be only be writable by owner\n", argv[0]);
return -1;
}
mysetgrfile(argv[0]);
mysetgrent();
return true;
}
static void
sample_cleanup(void)
{
myendgrent();
}
static int
sample_query(const char *user, const char *group, const struct passwd *pwd)
{
struct group *grp;
char **member;
grp = mygetgrnam(group);
if (grp != NULL && grp->gr_mem != NULL) {
for (member = grp->gr_mem; *member != NULL; member++) {
if (strcasecmp(user, *member) == 0)
return true;
}
}
return false;
}
__dso_public struct sudoers_group_plugin group_plugin = {
GROUP_API_VERSION,
sample_init,
sample_cleanup,
sample_query
};