shadow/contrib/adduser-old.c

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/****
** 03/17/96
** hacked a bit more, removed unused code, cleaned up for gcc -Wall.
** --marekm
**
** 02/26/96
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** modified to call shadow utils (useradd,chage,passwd) on shadowed
** systems - Cristian Gafton, gafton@sorosis.ro
**
** 6/27/95
** shadow-adduser 1.4:
**
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** now it copies the /etc/skel dir into the person's dir,
** makes the mail folders, changed some defaults and made a 'make
** install' just for the hell of it.
**
** Greg Gallagher
** CIN.Net
**
** 1/28/95
** shadow-adduser 1.3:
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**
** Basically a bug-fix on my additions in 1.2. Thanks to Terry Stewart
** (stew@texas.net) for pointing out one of the many idiotic bugs I introduced.
** It was such a stupid bug that I would have never seen it myself.
**
** Brandon
*****
** 01/27/95
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**
** shadow-adduser 1.2:
** I took the C source from adduser-shadow (credits are below) and made
** it a little more worthwhile. Many small changes... Here's
** the ones I can remember:
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**
** Removed support for non-shadowed systems (if you don't have shadow,
** use the original adduser, don't get this shadow version!)
** Added support for the correct /etc/shadow fields (Min days before
** password change, max days before password change, Warning days,
** and how many days from expiry date does the account go invalid)
** The previous version just left all of those fields blank.
** There is still one field left (expiry date for the account, period)
** which I have left blank because I do not use it and didn't want to
** spend any more time on this. I'm sure someone will put it in and
** tack another plethora of credits on here. :)
** Added in the password date field, which should always reflect the last
** date the password was changed, for expiry purposes. "passwd" always
** updates this field, so the adduser program should set it up right
** initially (or a user could keep thier initial password forever ;)
** The number is in days since Jan 1st, 1970.
**
** Have fun with it, and someone please make
** a real version(this is still just a hack)
** for us all to use (and Email it to me???)
**
** Brandon
** photon@usis.com
**
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*****
** adduser 1.0: add a new user account (For systems not using shadow)
** With a nice little interface and a will to do all the work for you.
**
** Craig Hagan
** hagan@opine.cs.umass.edu
**
** Modified to really work, look clean, and find unused uid by Chris Cappuccio
** chris@slinky.cs.umass.edu
**
*****
**
** 01/19/95
**
** FURTHER modifications to enable shadow passwd support (kludged, but
** no more so than the original) by Dan Crowson - dcrowson@mo.net
**
** Search on DAN for all changes...
**
*****
**
** cc -O -o adduser adduser.c
** Use gcc if you have it... (political reasons beyond my control) (chris)
**
** I've gotten this program to work with success under Linux (without
** shadow) and SunOS 4.1.3. I would assume it should work pretty well
** on any system that uses no shadow. (chris)
**
** If you have no crypt() then try
** cc -DNO_CRYPT -O -o adduser adduser.c xfdes.c
** I'm not sure how login operates with no crypt()... I guess
** the same way we're doing it here.
*/
#include <pwd.h>
#include <grp.h>
#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <time.h>
#include <sys/types.h>
#include <sys/timeb.h>
#include <sys/time.h>
#include <sys/stat.h>
#define DEFAULT_SHELL "/bin/bash" /* because BASH is your friend */
#define DEFAULT_HOME "/home"
#define USERADD_PATH "/usr/sbin/useradd"
#define CHAGE_PATH "/usr/sbin/chage"
#define PASSWD_PATH "/usr/bin/passwd"
#define DEFAULT_GROUP 100
#define DEFAULT_MAX_PASS 60
#define DEFAULT_WARN_PASS 10
/* if you use this feature, you will get a lot of complaints from users
who rarely use their accounts :) (something like 3 months would be
more reasonable) --marekm */
#define DEFAULT_USER_DIE /* 10 */ 0
void main()
{
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char foo[32];
char uname[9],person[32],dir[32],shell[32];
unsigned int group,min_pass,max_pass,warn_pass,user_die;
/* the group and uid of the new user */
int bad=0,done=0,correct=0,gets_warning=0;
char cmd[255];
struct group *grp;
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/* flags, in order:
* bad to see if the username is in /etc/passwd, or if strange stuff has
* been typed if the user might be put in group 0
* done allows the program to exit when a user has been added
* correct loops until a password is found that isn't in /etc/passwd
* gets_warning allows the fflush to be skipped for the first gets
* so that output is still legible
*/
/* The real program starts HERE! */
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if(geteuid()!=0)
{
printf("It seems you don't have access to add a new user. Try\n");
printf("logging in as root or su root to gain super-user access.\n");
exit(1);
}
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/* Sanity checks
*/
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if (!(grp=getgrgid(DEFAULT_GROUP))){
printf("Error: the default group %d does not exist on this system!\n",
DEFAULT_GROUP);
printf("adduser must be recompiled.\n");
exit(1);
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};
while(!correct) { /* loop until a "good" uname is chosen */
while(!done) {
printf("\nLogin to add (^C to quit): ");
if(gets_warning) /* if the warning was already shown */
fflush(stdout); /* fflush stdout, otherwise set the flag */
else
gets_warning=1;
gets(uname);
if(!strlen(uname)) {
printf("Empty input.\n");
done=0;
continue;
};
/* what I saw here before made me think maybe I was running DOS */
/* might this be a solution? (chris) */
if (getpwnam(uname) != NULL) {
printf("That name is in use, choose another.\n");
done=0;
} else
done=1;
}; /* done, we have a valid new user name */
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/* all set, get the rest of the stuff */
printf("\nEditing information for new user [%s]\n",uname);
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printf("\nFull Name [%s]: ",uname);
gets(person);
if (!strlen(person)) {
bzero(person,sizeof(person));
strcpy(person,uname);
};
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do {
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bad=0;
printf("GID [%d]: ",DEFAULT_GROUP);
gets(foo);
if (!strlen(foo))
group=DEFAULT_GROUP;
else
if (isdigit (*foo)) {
group = atoi(foo);
if (! (grp = getgrgid (group))) {
printf("unknown gid %s\n",foo);
group=DEFAULT_GROUP;
bad=1;
};
} else
if ((grp = getgrnam (foo)))
group = grp->gr_gid;
else {
printf("unknown group %s\n",foo);
group=DEFAULT_GROUP;
bad=1;
}
if (group==0){ /* You're not allowed to make root group users! */
printf("Creation of root group users not allowed (must be done by hand)\n");
group=DEFAULT_GROUP;
bad=1;
};
} while(bad);
fflush(stdin);
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printf("\nIf home dir ends with a / then [%s] will be appended to it\n",uname);
printf("Home Directory [%s/%s]: ",DEFAULT_HOME,uname);
fflush(stdout);
gets(dir);
if (!strlen(dir)) { /* hit return */
sprintf(dir,"%s/%s",DEFAULT_HOME,uname);
fflush(stdin);
} else
if (dir[strlen(dir)-1]=='/')
sprintf(dir+strlen(dir),"%s",uname);
printf("\nShell [%s]: ",DEFAULT_SHELL);
fflush(stdout);
gets(shell);
if (!strlen(shell))
sprintf(shell,"%s",DEFAULT_SHELL);
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printf("\nMin. Password Change Days [0]: ");
gets(foo);
min_pass=atoi(foo);
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printf("Max. Password Change Days [%d]: ",DEFAULT_MAX_PASS);
gets(foo);
if (strlen(foo) > 1)
max_pass = atoi(foo);
else
max_pass = DEFAULT_MAX_PASS;
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printf("Password Warning Days [%d]: ",DEFAULT_WARN_PASS);
gets(foo);
warn_pass = atoi(foo);
if (warn_pass==0)
warn_pass = DEFAULT_WARN_PASS;
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printf("Days after Password Expiry for Account Locking [%d]: ",DEFAULT_USER_DIE);
gets(foo);
user_die = atoi(foo);
if (user_die == 0)
user_die = DEFAULT_USER_DIE;
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printf("\nInformation for new user [%s] [%s]:\n",uname,person);
printf("Home directory: [%s] Shell: [%s]\n",dir,shell);
printf("GID: [%d]\n",group);
printf("MinPass: [%d] MaxPass: [%d] WarnPass: [%d] UserExpire: [%d]\n",
min_pass,max_pass,warn_pass,user_die);
printf("\nIs this correct? [y/N]: ");
fflush(stdout);
gets(foo);
done=bad=correct=(foo[0]=='y'||foo[0]=='Y');
if(bad!=1)
printf("\nUser [%s] not added\n",uname);
}
bzero(cmd,sizeof(cmd));
sprintf(cmd,"%s -g %d -d %s -s %s -c \"%s\" -m -k /etc/skel %s",
USERADD_PATH,group,dir,shell,person,uname);
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printf("Calling useradd to add new user:\n%s\n",cmd);
if(system(cmd)){
printf("User add failed!\n");
exit(errno);
};
bzero(cmd,sizeof(cmd));
sprintf(cmd,"%s -m %d -M %d -W %d -I %d %s", CHAGE_PATH,
min_pass,max_pass,warn_pass,user_die,uname);
printf("%s\n",cmd);
if(system(cmd)){
printf("There was an error setting password expire values\n");
exit(errno);
};
bzero(cmd,sizeof(cmd));
sprintf(cmd,"%s %s",PASSWD_PATH,uname);
system(cmd);
printf("\nDone.\n");
}