07-03-2008
Now i got a bit thurder. But have a differnet problem.
In end of the shadow file it writes "GjgGToqZ1:14063:0:99999:7:"
dont understand why!
#include <stdio.h>
#include <errno.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <pwd.h>
#include <grp.h>
#include <string.h>
#include <shadow.h>
//#include <userpw.h>
int main()
{
// -------------------------- //
// ------- passwd file ------ //
// -------------------------- //
FILE* fp;
struct passwd *p;
memset(&p, 0, sizeof(p));
if (!(fp = fopen("/etc/passwd", "r"))) {
perror("Problem ");
return(1);
}
// --------------------------- //
// ------ shadow file -------- //
// --------------------------- //
FILE* fps;
struct spwd *sp;
//char currpass[255];
memset(&sp, 0, sizeof(sp));
//memset(&currpass, 0, sizeof(currpass));
if (!(fps = fopen("/etc/shadow", "r+"))) {
perror("Problem");
return(1);
}
char user[20] = "kalle";
//strcpy(sp->sp_pwdp,t);
//char password[10] = "password";
/* Loop thru passwd file */
while ((sp = getspent()) != NULL) {
if (strcmp(sp->sp_namp,user) == 0 ) {
//if(!(sp=getspnam(sp->sp_namp))) {
// printf("that user does not exist in shadow file\n");
//} else {
strcpy(sp->sp_pwdp,"testpass");
putspent(sp, fps);
}
else {
//strcpy(sp->sp_pwdp,"temp");
putspent(sp,fps);
}
}
fclose(fp);
fclose(fps); return( EXIT_SUCCESS );
}
exit(0);
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pwconv(1M) System Administration Commands pwconv(1M)
NAME
pwconv - installs and updates /etc/shadow with information from /etc/passwd
SYNOPSIS
pwconv
DESCRIPTION
The pwconv command creates and updates /etc/shadow with information from /etc/passwd.
pwconv relies on a special value of 'x' in the password field of /etc/passwd. This value of 'x' indicates that the password for the user is
already in /etc/shadow and should not be modified.
If the /etc/shadow file does not exist, this command will create /etc/shadow with information from /etc/passwd. The command populates
/etc/shadow with the user's login name, password, and password aging information. If password aging information does not exist in
/etc/passwd for a given user, none will be added to /etc/shadow. However, the last changed information will always be updated.
If the /etc/shadow file does exist, the following tasks will be performed:
Entries that are in the /etc/passwd file and not in the /etc/shadow file will be added to the /etc/shadow file.
Entries that are in the /etc/shadow file and not in the /etc/passwd file will be removed from /etc/shadow.
Password attributes (for example, password and aging information) that exist in an /etc/passwd entry will be moved to the corre-
sponding entry in /etc/shadow.
The pwconv command can only be used by the super-user.
FILES
/etc/opasswd
/etc/oshadow
/etc/passwd
/etc/shadow
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWcsu |
+-----------------------------+-----------------------------+
SEE ALSO
passwd(1), passmgmt(1M), usermod(1M), passwd(4), attributes(5)
DIAGNOSTICS
pwconv exits with one of the following values:
0 SUCCESS.
1 Permission denied.
2 Invalid command syntax.
3 Unexpected failure. Conversion not done.
4 Unexpected failure. Password file(s) missing.
5 Password file(s) busy. Try again later.
6 Bad entry in /etc/shadow file.
SunOS 5.10 9 Mar 1993 pwconv(1M)