/*
* new_fields - change the user's GECOS information interactively
*
* prompt the user for each of the four fields and fill in the fields from
* the user's response, or leave alone if nothing was entered.
*/
static void new_fields (void)
{
printf (_("Enter the new value, or press ENTER for the default\n"));
if (may_change_field ('f'))
change_field (fullnm, sizeof fullnm, _("Full Name"));
else
printf (_("\tFull Name: %s\n"), fullnm);
if (may_change_field ('r'))
change_field (roomno, sizeof roomno, _("Room Number"));
else
printf (_("\tRoom Number: %s\n"), roomno);
if (may_change_field ('w'))
change_field (workph, sizeof workph, _("Work Phone"));
else
printf (_("\tWork Phone: %s\n"), workph);
if (may_change_field ('h'))
change_field (homeph, sizeof homeph, _("Home Phone"));
else
printf (_("\tHome Phone: %s\n"), homeph);
if (amroot)
change_field (slop, sizeof slop, _("Other"));
}
/*
* new_fields - change the user's GECOS information interactively
*
* prompt the user for each of the four fields and fill in the fields from
* the user's response, or leave alone if nothing was entered.
*/
static void new_fields (void)
{
puts (_("Enter the new value, or press ENTER for the default"));
if (may_change_field ('f')) {
change_field (fullnm, sizeof fullnm, _("Full Name"));
} else {
printf (_("\t%s: %s\n"), _("Full Name"), fullnm);
}
if (may_change_field ('r')) {
change_field (roomno, sizeof roomno, _("Room Number"));
} else {
printf (_("\t%s: %s\n"), _("Room Number"), fullnm);
}
if (may_change_field ('w')) {
change_field (workph, sizeof workph, _("Work Phone"));
} else {
printf (_("\t%s: %s\n"), _("Work Phone"), fullnm);
}
if (may_change_field ('h')) {
change_field (homeph, sizeof homeph, _("Home Phone"));
} else {
printf (_("\t%s: %s\n"), _("Home Phone"), fullnm);
}
if (amroot) {
change_field (slop, sizeof slop, _("Other"));
}
}
/*
* chfn - change a user's password file information
*
* This command controls the GECOS field information in the password
* file entry.
*
* The valid options are
*
* -f full name
* -r room number
* -w work phone number
* -h home phone number
* -o other information (*)
*
* (*) requires root permission to execute.
*/
int main (int argc, char **argv)
{
char *cp; /* temporary character pointer */
const struct passwd *pw; /* password file entry */
struct passwd pwent; /* modified password file entry */
char old_gecos[BUFSIZ]; /* buffer for old GECOS fields */
char new_gecos[BUFSIZ]; /* buffer for new GECOS fields */
int flag; /* flag currently being processed */
int fflg = 0; /* -f - set full name */
int rflg = 0; /* -r - set room number */
int wflg = 0; /* -w - set work phone number */
int hflg = 0; /* -h - set home phone number */
int oflg = 0; /* -o - set other information */
char *user;
#ifdef USE_PAM
pam_handle_t *pamh = NULL;
struct passwd *pampw;
int retval;
#endif
sanitize_env ();
setlocale (LC_ALL, "");
bindtextdomain (PACKAGE, LOCALEDIR);
textdomain (PACKAGE);
/*
* This command behaves different for root and non-root
* users.
*/
amroot = (getuid () == 0);
/*
* Get the program name. The program name is used as a
* prefix to most error messages.
*/
Prog = Basename (argv[0]);
OPENLOG ("chfn");
/*
* The remaining arguments will be processed one by one and executed
* by this command. The name is the last argument if it does not
* begin with a "-", otherwise the name is determined from the
* environment and must agree with the real UID. Also, the UID will
* be checked for any commands which are restricted to root only.
*/
while ((flag = getopt (argc, argv, "f:r:w:h:o:")) != EOF) {
switch (flag) {
case 'f':
if (!may_change_field ('f')) {
fprintf (stderr,
_("%s: Permission denied.\n"), Prog);
exit (E_NOPERM);
}
fflg++;
STRFCPY (fullnm, optarg);
break;
case 'h':
if (!may_change_field ('h')) {
fprintf (stderr,
_("%s: Permission denied.\n"), Prog);
exit (E_NOPERM);
}
hflg++;
STRFCPY (homeph, optarg);
break;
case 'r':
if (!may_change_field ('r')) {
fprintf (stderr,
_("%s: Permission denied.\n"), Prog);
exit (E_NOPERM);
}
rflg++;
STRFCPY (roomno, optarg);
break;
case 'o':
if (!amroot) {
fprintf (stderr,
_("%s: Permission denied.\n"), Prog);
exit (E_NOPERM);
}
oflg++;
STRFCPY (slop, optarg);
break;
case 'w':
if (!may_change_field ('w')) {
fprintf (stderr,
_("%s: Permission denied.\n"), Prog);
exit (E_NOPERM);
}
wflg++;
STRFCPY (workph, optarg);
break;
default:
usage ();
}
}
/*
* Get the name of the user to check. It is either the command line
* name, or the name getlogin() returns.
*/
if (optind < argc) {
user = argv[optind];
pw = getpwnam (user);
if (!pw) {
fprintf (stderr, _("%s: unknown user %s\n"), Prog,
user);
exit (E_NOPERM);
}
} else {
pw = get_my_pwent ();
if (!pw) {
fprintf (stderr,
_
("%s: Cannot determine your user name.\n"),
Prog);
exit (E_NOPERM);
}
user = xstrdup (pw->pw_name);
}
#ifdef USE_NIS
/*
* Now we make sure this is a LOCAL password entry for this user ...
*/
if (__ispwNIS ()) {
char *nis_domain;
char *nis_master;
fprintf (stderr,
_("%s: cannot change user `%s' on NIS client.\n"),
Prog, user);
if (!yp_get_default_domain (&nis_domain) &&
!yp_master (nis_domain, "passwd.byname", &nis_master)) {
fprintf (stderr,
_
("%s: `%s' is the NIS master for this client.\n"),
Prog, nis_master);
}
exit (E_NOPERM);
}
#endif
/*
* Non-privileged users are only allowed to change the gecos field
* if the UID of the user matches the current real UID.
*/
if (!amroot && pw->pw_uid != getuid ()) {
fprintf (stderr, _("%s: Permission denied.\n"), Prog);
closelog ();
exit (E_NOPERM);
}
#ifdef WITH_SELINUX
/*
* If the UID of the user does not match the current real UID,
* check if the change is allowed by SELinux policy.
*/
if ((pw->pw_uid != getuid ())
&& (selinux_check_passwd_access (PASSWD__CHFN) != 0)) {
fprintf (stderr, _("%s: Permission denied.\n"), Prog);
closelog ();
exit (E_NOPERM);
}
#endif
#ifndef USE_PAM
/*
* Non-privileged users are optionally authenticated (must enter the
* password of the user whose information is being changed) before
* any changes can be made. Idea from util-linux chfn/chsh.
* --marekm
*/
if (!amroot && getdef_bool ("CHFN_AUTH"))
passwd_check (pw->pw_name, pw->pw_passwd, "chfn");
#else /* !USE_PAM */
retval = PAM_SUCCESS;
pampw = getpwuid (getuid ());
if (pampw == NULL) {
retval = PAM_USER_UNKNOWN;
}
if (retval == PAM_SUCCESS) {
retval = pam_start ("chfn", pampw->pw_name, &conv, &pamh);
}
if (retval == PAM_SUCCESS) {
retval = pam_authenticate (pamh, 0);
if (retval != PAM_SUCCESS) {
pam_end (pamh, retval);
}
}
if (retval == PAM_SUCCESS) {
retval = pam_acct_mgmt (pamh, 0);
if (retval != PAM_SUCCESS) {
pam_end (pamh, retval);
}
}
if (retval != PAM_SUCCESS) {
fprintf (stderr, _("%s: PAM authentication failed\n"), Prog);
exit (E_NOPERM);
}
#endif /* USE_PAM */
/*
* Now get the full name. It is the first comma separated field in
* the GECOS field.
*/
STRFCPY (old_gecos, pw->pw_gecos);
cp = copy_field (old_gecos, fflg ? (char *) 0 : fullnm, slop);
/*
* Now get the room number. It is the next comma separated field,
* if there is indeed one.
*/
if (cp)
cp = copy_field (cp, rflg ? (char *) 0 : roomno, slop);
/*
* Now get the work phone number. It is the third field.
*/
if (cp)
cp = copy_field (cp, wflg ? (char *) 0 : workph, slop);
/*
* Now get the home phone number. It is the fourth field.
*/
if (cp)
cp = copy_field (cp, hflg ? (char *) 0 : homeph, slop);
/*
* Anything left over is "slop".
*/
if (cp && !oflg) {
if (slop[0])
strcat (slop, ",");
strcat (slop, cp);
}
/*
* If none of the fields were changed from the command line, let the
* user interactively change them.
*/
if (!fflg && !rflg && !wflg && !hflg && !oflg) {
printf (_("Changing the user information for %s\n"), user);
new_fields ();
}
/*
* Check all of the fields for valid information
*/
if (valid_field (fullnm, ":,=")) {
fprintf (stderr, _("%s: invalid name: \"%s\"\n"), Prog, fullnm);
closelog ();
exit (E_NOPERM);
}
if (valid_field (roomno, ":,=")) {
fprintf (stderr, _("%s: invalid room number: \"%s\"\n"),
Prog, roomno);
closelog ();
exit (E_NOPERM);
}
if (valid_field (workph, ":,=")) {
fprintf (stderr, _("%s: invalid work phone: \"%s\"\n"),
Prog, workph);
closelog ();
exit (E_NOPERM);
}
if (valid_field (homeph, ":,=")) {
fprintf (stderr, _("%s: invalid home phone: \"%s\"\n"),
Prog, homeph);
closelog ();
exit (E_NOPERM);
}
if (valid_field (slop, ":")) {
fprintf (stderr,
_("%s: \"%s\" contains illegal characters\n"),
Prog, slop);
closelog ();
exit (E_NOPERM);
}
/*
* Build the new GECOS field by plastering all the pieces together,
* if they will fit ...
*/
if (strlen (fullnm) + strlen (roomno) + strlen (workph) +
strlen (homeph) + strlen (slop) > (unsigned int) 80) {
fprintf (stderr, _("%s: fields too long\n"), Prog);
closelog ();
exit (E_NOPERM);
}
snprintf (new_gecos, sizeof new_gecos, "%s,%s,%s,%s%s%s",
fullnm, roomno, workph, homeph, slop[0] ? "," : "", slop);
/*
* Before going any further, raise the ulimit to prevent colliding
* into a lowered ulimit, and set the real UID to root to protect
* against unexpected signals. Any keyboard signals are set to be
* ignored.
*/
if (setuid (0)) {
fprintf (stderr, _("Cannot change ID to root.\n"));
SYSLOG ((LOG_ERR, "can't setuid(0)"));
closelog ();
exit (E_NOPERM);
}
pwd_init ();
/*
* The passwd entry is now ready to be committed back to the
* password file. Get a lock on the file and open it.
*/
if (!pw_lock ()) {
fprintf (stderr,
_
("Cannot lock the password file; try again later.\n"));
SYSLOG ((LOG_WARN, "can't lock /etc/passwd"));
closelog ();
exit (E_NOPERM);
}
if (!pw_open (O_RDWR)) {
fprintf (stderr, _("Cannot open the password file.\n"));
pw_unlock ();
SYSLOG ((LOG_ERR, "can't open /etc/passwd"));
closelog ();
exit (E_NOPERM);
}
/*
* Get the entry to update using pw_locate() - we want the real one
* from /etc/passwd, not the one from getpwnam() which could contain
* the shadow password if (despite the warnings) someone enables
* AUTOSHADOW (or SHADOW_COMPAT in libc). --marekm
*/
pw = pw_locate (user);
if (!pw) {
pw_unlock ();
fprintf (stderr,
_("%s: %s not found in /etc/passwd\n"), Prog, user);
exit (E_NOPERM);
}
/*
* Make a copy of the entry, then change the gecos field. The other
* fields remain unchanged.
*/
pwent = *pw;
pwent.pw_gecos = new_gecos;
/*
* Update the passwd file entry. If there is a DBM file, update that
* entry as well.
*/
if (!pw_update (&pwent)) {
fprintf (stderr, _("Error updating the password entry.\n"));
pw_unlock ();
SYSLOG ((LOG_ERR, "error updating passwd entry"));
closelog ();
exit (E_NOPERM);
}
/*
* Changes have all been made, so commit them and unlock the file.
*/
if (!pw_close ()) {
fprintf (stderr, _("Cannot commit password file changes.\n"));
pw_unlock ();
SYSLOG ((LOG_ERR, "can't rewrite /etc/passwd"));
closelog ();
exit (E_NOPERM);
}
if (!pw_unlock ()) {
fprintf (stderr, _("Cannot unlock the password file.\n"));
SYSLOG ((LOG_ERR, "can't unlock /etc/passwd"));
closelog ();
exit (E_NOPERM);
}
SYSLOG ((LOG_INFO, "changed user `%s' information", user));
nscd_flush_cache ("passwd");
#ifdef USE_PAM
if (retval == PAM_SUCCESS)
pam_end (pamh, PAM_SUCCESS);
#endif /* USE_PAM */
closelog ();
exit (E_SUCCESS);
}
/*
* process_flags - parse the command line options
*
* It will not return if an error is encountered.
*/
static void process_flags (int argc, char **argv)
{
int c; /* flag currently being processed */
static struct option long_options[] = {
{"full-name", required_argument, NULL, 'f'},
{"home-phone", required_argument, NULL, 'h'},
{"other", required_argument, NULL, 'o'},
{"room", required_argument, NULL, 'r'},
{"root", required_argument, NULL, 'R'},
{"help", no_argument, NULL, 'u'},
{"work-phone", required_argument, NULL, 'w'},
{NULL, 0, NULL, '\0'}
};
/*
* The remaining arguments will be processed one by one and executed
* by this command. The name is the last argument if it does not
* begin with a "-", otherwise the name is determined from the
* environment and must agree with the real UID. Also, the UID will
* be checked for any commands which are restricted to root only.
*/
while ((c = getopt_long (argc, argv, "f:h:o:r:R:uw:",
long_options, NULL)) != -1) {
switch (c) {
case 'f':
if (!may_change_field ('f')) {
fprintf (stderr,
_("%s: Permission denied.\n"), Prog);
exit (E_NOPERM);
}
fflg = true;
STRFCPY (fullnm, optarg);
break;
case 'h':
if (!may_change_field ('h')) {
fprintf (stderr,
_("%s: Permission denied.\n"), Prog);
exit (E_NOPERM);
}
hflg = true;
STRFCPY (homeph, optarg);
break;
case 'o':
if (!amroot) {
fprintf (stderr,
_("%s: Permission denied.\n"), Prog);
exit (E_NOPERM);
}
oflg = true;
STRFCPY (slop, optarg);
break;
case 'r':
if (!may_change_field ('r')) {
fprintf (stderr,
_("%s: Permission denied.\n"), Prog);
exit (E_NOPERM);
}
rflg = true;
STRFCPY (roomno, optarg);
break;
case 'R': /* no-op, handled in process_root_flag () */
break;
case 'u':
usage (E_SUCCESS);
/*@notreached@*/break;
case 'w':
if (!may_change_field ('w')) {
fprintf (stderr,
_("%s: Permission denied.\n"), Prog);
exit (E_NOPERM);
}
wflg = true;
STRFCPY (workph, optarg);
break;
default:
usage (E_USAGE);
}
}
}
int
main(int argc, char **argv)
{
char *cp; /* temporary character pointer */
const struct passwd *pw; /* password file entry */
struct passwd pwent; /* modified password file entry */
char old_gecos[BUFSIZ]; /* buffer for old GECOS fields */
char new_gecos[BUFSIZ]; /* buffer for new GECOS fields */
int flag; /* flag currently being processed */
int fflg = 0; /* -f - set full name */
int rflg = 0; /* -r - set room number */
int wflg = 0; /* -w - set work phone number */
int hflg = 0; /* -h - set home phone number */
int oflg = 0; /* -o - set other information */
char *user;
sanitize_env();
setlocale(LC_ALL, "");
bindtextdomain(PACKAGE, LOCALEDIR);
textdomain(PACKAGE);
/*
* This command behaves different for root and non-root
* users.
*/
amroot = (getuid () == 0);
#ifdef NDBM
pw_dbm_mode = O_RDWR;
#endif
/*
* Get the program name. The program name is used as a
* prefix to most error messages. It is also used as input
* to the openlog() function for error logging.
*/
Prog = Basename(argv[0]);
openlog("chfn", LOG_PID, LOG_AUTH);
/*
* The remaining arguments will be processed one by one and
* executed by this command. The name is the last argument
* if it does not begin with a "-", otherwise the name is
* determined from the environment and must agree with the
* real UID. Also, the UID will be checked for any commands
* which are restricted to root only.
*/
while ((flag = getopt (argc, argv, "f:r:w:h:o:")) != EOF) {
switch (flag) {
case 'f':
if (!may_change_field('f')) {
fprintf(stderr, _("%s: Permission denied.\n"), Prog);
exit(1);
}
fflg++;
STRFCPY(fullnm, optarg);
break;
case 'r':
if (!may_change_field('r')) {
fprintf(stderr, _("%s: Permission denied.\n"), Prog);
exit(1);
}
rflg++;
STRFCPY(roomno, optarg);
break;
case 'w':
if (!may_change_field('w')) {
fprintf(stderr, _("%s: Permission denied.\n"), Prog);
exit(1);
}
wflg++;
STRFCPY(workph, optarg);
break;
case 'h':
if (!may_change_field('h')) {
fprintf(stderr, _("%s: Permission denied.\n"), Prog);
exit(1);
}
hflg++;
STRFCPY(homeph, optarg);
break;
case 'o':
if (!amroot) {
fprintf(stderr, _("%s: Permission denied.\n"), Prog);
exit(1);
}
oflg++;
STRFCPY(slop, optarg);
break;
default:
usage();
}
}
/*
* Get the name of the user to check. It is either
* the command line name, or the name getlogin()
* returns.
*/
if (optind < argc) {
user = argv[optind];
pw = getpwnam(user);
if (!pw) {
fprintf(stderr, _("%s: Unknown user %s\n"), Prog, user);
exit(1);
}
} else {
pw = get_my_pwent();
if (!pw) {
fprintf(stderr, _("%s: Cannot determine your user name.\n"), Prog);
exit(1);
}
user = xstrdup(pw->pw_name);
}
#ifdef USE_NIS
/*
* Now we make sure this is a LOCAL password entry for
* this user ...
*/
if (__ispwNIS ()) {
char *nis_domain;
char *nis_master;
fprintf (stderr, _("%s: cannot change user `%s' on NIS client.\n"), Prog, user);
if (! yp_get_default_domain (&nis_domain) &&
! yp_master (nis_domain, "passwd.byname",
&nis_master)) {
fprintf (stderr, _("%s: `%s' is the NIS master for this client.\n"), Prog, nis_master);
}
exit (1);
}
#endif
/*
* Non-privileged users are only allowed to change the
* gecos field if the UID of the user matches the current
* real UID.
*/
if (!amroot && pw->pw_uid != getuid()) {
fprintf (stderr, _("%s: Permission denied.\n"), Prog);
closelog();
exit(1);
}
/*
* Non-privileged users are optionally authenticated
* (must enter the password of the user whose information
* is being changed) before any changes can be made.
* Idea from util-linux chfn/chsh. --marekm
*/
if (!amroot && getdef_bool("CHFN_AUTH"))
passwd_check(pw->pw_name, pw->pw_passwd, "chfn");
/*
* Now get the full name. It is the first comma separated field
* in the GECOS field.
*/
STRFCPY(old_gecos, pw->pw_gecos);
cp = copy_field (old_gecos, fflg ? (char *) 0:fullnm, slop);
/*
* Now get the room number. It is the next comma separated field,
* if there is indeed one.
*/
if (cp)
cp = copy_field (cp, rflg ? (char *) 0:roomno, slop);
/*
* Now get the work phone number. It is the third field.
*/
if (cp)
cp = copy_field (cp, wflg ? (char *) 0:workph, slop);
/*
* Now get the home phone number. It is the fourth field.
*/
if (cp)
cp = copy_field (cp, hflg ? (char *) 0:homeph, slop);
/*
* Anything left over is "slop".
*/
if (cp && !oflg) {
if (slop[0])
strcat (slop, ",");
strcat (slop, cp);
}
/*
* If none of the fields were changed from the command line,
* let the user interactively change them.
*/
if (!fflg && !rflg && !wflg && !hflg && !oflg) {
printf(_("Changing the user information for %s\n"), user);
new_fields();
}
/*
* Check all of the fields for valid information
*/
if (valid_field(fullnm, ":,=")) {
fprintf(stderr, _("%s: invalid name: \"%s\"\n"), Prog, fullnm);
closelog();
exit(1);
}
if (valid_field(roomno, ":,=")) {
fprintf(stderr, _("%s: invalid room number: \"%s\"\n"), Prog, roomno);
closelog();
exit(1);
}
if (valid_field(workph, ":,=")) {
fprintf(stderr, _("%s: invalid work phone: \"%s\"\n"), Prog, workph);
closelog();
exit(1);
}
if (valid_field (homeph, ":,=")) {
fprintf(stderr, _("%s: invalid home phone: \"%s\"\n"), Prog, homeph);
closelog();
exit(1);
}
if (valid_field(slop, ":")) {
fprintf(stderr, _("%s: \"%s\" contains illegal characters\n"), Prog, slop);
closelog();
exit(1);
}
/*
* Build the new GECOS field by plastering all the pieces together,
* if they will fit ...
*/
if (strlen(fullnm) + strlen(roomno) + strlen(workph) +
strlen(homeph) + strlen(slop) > (unsigned int) 80) {
fprintf(stderr, _("%s: fields too long\n"), Prog);
closelog();
exit(1);
}
snprintf(new_gecos, sizeof new_gecos, "%s,%s,%s,%s%s%s",
fullnm, roomno, workph, homeph, slop[0] ? "," : "", slop);
/*
* Before going any further, raise the ulimit to prevent
* colliding into a lowered ulimit, and set the real UID
* to root to protect against unexpected signals. Any
* keyboard signals are set to be ignored.
*/
if (setuid(0)) {
fprintf(stderr, _("Cannot change ID to root.\n"));
SYSLOG((LOG_ERR, NOTROOT2));
closelog();
exit(1);
}
pwd_init();
/*
* The passwd entry is now ready to be committed back to
* the password file. Get a lock on the file and open it.
*/
if (!pw_lock()) {
fprintf(stderr, _("Cannot lock the password file; try again later.\n"));
SYSLOG((LOG_WARN, PWDBUSY2));
closelog();
exit(1);
}
if (!pw_open(O_RDWR)) {
fprintf(stderr, _("Cannot open the password file.\n"));
pw_unlock();
SYSLOG((LOG_ERR, OPNERROR2));
closelog();
exit(1);
}
/*
* Get the entry to update using pw_locate() - we want the real
* one from /etc/passwd, not the one from getpwnam() which could
* contain the shadow password if (despite the warnings) someone
* enables AUTOSHADOW (or SHADOW_COMPAT in libc). --marekm
*/
pw = pw_locate(user);
if (!pw) {
pw_unlock();
fprintf(stderr,
_("%s: %s not found in /etc/passwd\n"), Prog, user);
exit(1);
}
/*
* Make a copy of the entry, then change the gecos field. The other
* fields remain unchanged.
*/
pwent = *pw;
pwent.pw_gecos = new_gecos;
/*
* Update the passwd file entry. If there is a DBM file,
* update that entry as well.
*/
if (!pw_update(&pwent)) {
fprintf(stderr, _("Error updating the password entry.\n"));
pw_unlock();
SYSLOG((LOG_ERR, UPDERROR2));
closelog();
exit(1);
}
#ifdef NDBM
if (pw_dbm_present() && !pw_dbm_update(&pwent)) {
fprintf(stderr, _("Error updating the DBM password entry.\n"));
pw_unlock ();
SYSLOG((LOG_ERR, DBMERROR2));
closelog();
exit(1);
}
endpwent();
#endif
/*
* Changes have all been made, so commit them and unlock the
* file.
*/
if (!pw_close()) {
fprintf(stderr, _("Cannot commit password file changes.\n"));
pw_unlock();
SYSLOG((LOG_ERR, CLSERROR2));
closelog();
exit(1);
}
if (!pw_unlock()) {
fprintf(stderr, _("Cannot unlock the password file.\n"));
SYSLOG((LOG_ERR, UNLKERROR2));
closelog();
exit(1);
}
SYSLOG((LOG_INFO, CHGGECOS, user));
closelog();
exit (0);
}
/*
* process_flags - parse the command line options
*
* It will not return if an error is encountered.
*/
static void process_flags (int argc, char **argv)
{
int flag; /* flag currently being processed */
/*
* The remaining arguments will be processed one by one and executed
* by this command. The name is the last argument if it does not
* begin with a "-", otherwise the name is determined from the
* environment and must agree with the real UID. Also, the UID will
* be checked for any commands which are restricted to root only.
*/
while ((flag = getopt (argc, argv, "f:r:w:h:o:")) != EOF) {
switch (flag) {
case 'f':
if (!may_change_field ('f')) {
fprintf (stderr,
_("%s: Permission denied.\n"), Prog);
exit (E_NOPERM);
}
fflg = true;
STRFCPY (fullnm, optarg);
break;
case 'h':
if (!may_change_field ('h')) {
fprintf (stderr,
_("%s: Permission denied.\n"), Prog);
exit (E_NOPERM);
}
hflg = true;
STRFCPY (homeph, optarg);
break;
case 'r':
if (!may_change_field ('r')) {
fprintf (stderr,
_("%s: Permission denied.\n"), Prog);
exit (E_NOPERM);
}
rflg = true;
STRFCPY (roomno, optarg);
break;
case 'o':
if (!amroot) {
fprintf (stderr,
_("%s: Permission denied.\n"), Prog);
exit (E_NOPERM);
}
oflg = true;
STRFCPY (slop, optarg);
break;
case 'w':
if (!may_change_field ('w')) {
fprintf (stderr,
_("%s: Permission denied.\n"), Prog);
exit (E_NOPERM);
}
wflg = true;
STRFCPY (workph, optarg);
break;
default:
usage ();
}
}
}
