*
*/
+#ifndef _GNU_SOURCE
+#define _GNU_SOURCE
+#endif
#include <errno.h>
#include <fcntl.h>
#include <stdarg.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
+#include <getopt.h>
#include <sys/param.h>
#include <sys/stat.h>
#include <sys/types.h>
#include "busybox.h"
-#include "pwd.h"
-#include "grp.h"
-#define PASSWD_FILE "/etc/passwd"
-#define SHADOW_FILE "/etc/shadow"
/* structs __________________________ */
static const char default_passwd[] = "x";
static const char default_gecos[] = "Linux User,,,";
static const char default_home_prefix[] = "/home";
-static const char default_shell[] = "/bin/sh";
#ifdef CONFIG_FEATURE_SHADOWPASSWDS
-
-#include "shadow.h"
-
/* shadow in use? */
static int shadow_enabled = 0;
#endif
const int min = 500;
const int max = 65000;
- passwd = wfopen(filename, "r");
+ passwd = bb_wfopen(filename, "r");
if (!passwd)
return 4;
}
}
- /* EDR check for an already existing gid */
- while (getgrgid(p->pw_uid) != NULL)
- p->pw_uid++;
+ if (p->pw_gid == 0) {
+ /* EDR check for an already existing gid */
+ while (getgrgid(p->pw_uid) != NULL)
+ p->pw_uid++;
- /* EDR also check for an existing group definition */
- if (getgrnam(p->pw_name) != NULL)
- return 3;
+ /* EDR also check for an existing group definition */
+ if (getgrnam(p->pw_name) != NULL)
+ return 3;
+
+ /* EDR create new gid always = uid */
+ p->pw_gid = p->pw_uid;
+ }
/* EDR bounds check */
if ((p->pw_uid > max) || (p->pw_uid < min))
return 2;
- /* EDR create new gid always = uid */
- p->pw_gid = p->pw_uid;
-
/* return 1; */
return 0;
}
static void addgroup_wrapper(const char *login, gid_t gid)
{
- int argc = 3;
- const char *argv0_save;
- char group_id[8];
- char group_name[32];
- char *argv[] = { group_name, "-g", group_id };
-
- argv0_save = applet_name;
- applet_name = "addgroup";
- safe_strncpy(group_name, login, 32);
- sprintf(group_id, "%d", gid);
- addgroup_main(argc, argv);
- applet_name = argv0_save;
+ char *cmd;
+
+ bb_xasprintf(&cmd, "addgroup -g %d %s", gid, login);
+ system(cmd);
+ free(cmd);
}
+static void passwd_wrapper(const char *login) __attribute__ ((noreturn));
+
static void passwd_wrapper(const char *login)
{
static const char prog[] = "passwd";
execlp(prog, prog, login, NULL);
- error_msg_and_die("Failed to execute 'passwd', you must set the password for '%s' manually", login);
-}
-
-#ifdef CONFIG_FEATURE_SHADOWPASSWDS
-/*
- * pwd_to_spwd - create entries for new spwd structure
- *
- * pwd_to_spwd() creates a new (struct spwd) containing the
- * information in the pointed-to (struct passwd).
- */
-#define DAY (24L*3600L)
-#define WEEK (7*DAY)
-#define SCALE DAY
-static struct spwd *pwd_to_spwd(const struct passwd *pw)
-{
- static struct spwd sp;
-
- /*
- * Nice, easy parts first. The name and passwd map directly
- * from the old password structure to the new one.
- */
- sp.sp_namp = pw->pw_name;
- sp.sp_pwdp = pw->pw_passwd;
-
- /*
- * Defaults used if there is no pw_age information.
- */
- sp.sp_min = 0;
- sp.sp_max = (10000L * DAY) / SCALE;
- sp.sp_lstchg = time((time_t *) 0) / SCALE;
-
- /*
- * These fields have no corresponding information in the password
- * file. They are set to uninitialized values.
- */
- sp.sp_warn = -1;
- sp.sp_expire = -1;
- sp.sp_inact = -1;
- sp.sp_flag = -1;
-
- return &sp;
+ bb_error_msg_and_die("Failed to execute '%s', you must set the password for '%s' manually", prog, login);
}
-#endif
/* putpwent(3) remix */
-static int adduser(const char *filename, struct passwd *p)
+static int adduser(const char *filename, struct passwd *p, int makehome, int setpass)
{
FILE *passwd;
int r;
FILE *shadow;
struct spwd *sp;
#endif
+ int new_group = 1;
+
+ /* if using a pre-existing group, don't create one */
+ if (p->pw_gid != 0)
+ new_group = 0;
/* make sure everything is kosher and setup uid && gid */
- passwd = wfopen(filename, "a");
+ passwd = bb_wfopen(filename, "a");
if (passwd == NULL) {
- /* return -1; */
return 1;
}
fseek(passwd, 0, SEEK_END);
r = passwd_study(filename, p);
if (r) {
if (r == 1)
- error_msg("%s: login already in use", p->pw_name);
+ bb_error_msg("%s: login already in use", p->pw_name);
else if (r == 2)
- error_msg("illegal uid or no uids left");
+ bb_error_msg("illegal uid or no uids left");
else if (r == 3)
- error_msg("group name %s already in use", p->pw_name);
+ bb_error_msg("group name %s already in use", p->pw_name);
else
- error_msg("generic error.");
- /* return -1; */
+ bb_error_msg("generic error.");
return 1;
}
/* add to passwd */
if (putpwent(p, passwd) == -1) {
- /* return -1; */
return 1;
}
fclose(passwd);
#ifdef CONFIG_FEATURE_SHADOWPASSWDS
/* add to shadow if necessary */
if (shadow_enabled) {
- shadow = wfopen(SHADOW_FILE, "a");
+ shadow = bb_wfopen(bb_path_shadow_file, "a");
if (shadow == NULL) {
- /* return -1; */
return 1;
}
fseek(shadow, 0, SEEK_END);
}
#endif
- /* add to group */
- /* addgroup should be responsible for dealing w/ gshadow */
- addgroup_wrapper(p->pw_name, p->pw_gid);
+ if (new_group) {
+ /* add to group */
+ /* addgroup should be responsible for dealing w/ gshadow */
+ addgroup_wrapper(p->pw_name, p->pw_gid);
+ }
/* Clear the umask for this process so it doesn't
* * screw up the permissions on the mkdir and chown. */
umask(0);
- /* mkdir */
- if (mkdir(p->pw_dir, 0755)) {
- perror_msg("%s", p->pw_dir);
- }
- /* Set the owner and group so it is owned by the new user. */
- if (chown(p->pw_dir, p->pw_uid, p->pw_gid)) {
- perror_msg("%s", p->pw_dir);
+ if (makehome) {
+ /* mkdir */
+ if (mkdir(p->pw_dir, 0755)) {
+ bb_perror_msg("%s", p->pw_dir);
+ }
+ /* Set the owner and group so it is owned by the new user. */
+ if (chown(p->pw_dir, p->pw_uid, p->pw_gid)) {
+ bb_perror_msg("%s", p->pw_dir);
+ }
+ /* Now fix up the permissions to 2755. Can't do it before now
+ * since chown will clear the setgid bit */
+ if (chmod(p->pw_dir, 02755)) {
+ bb_perror_msg("%s", p->pw_dir);
+ }
}
- /* Now fix up the permissions to 2755. Can't do it before now
- * since chown will clear the setgid bit */
- if (chmod(p->pw_dir, 02755)) {
- perror_msg("%s", p->pw_dir);
+
+ if (setpass) {
+ /* interactively set passwd */
+ passwd_wrapper(p->pw_name);
}
- /* interactively set passwd */
- passwd_wrapper(p->pw_name);
return 0;
}
/* return current uid (root is always uid == 0, right?) */
-static inline uid_t i_am_not_root(void)
+#ifndef CONFIG_ADDGROUP
+static inline void if_i_am_not_root(void)
+#else
+void if_i_am_not_root(void)
+#endif
{
- return geteuid();
+ if (geteuid()) {
+ bb_error_msg_and_die( "Only root may add a user or group to the system.");
+ }
}
+#define SETPASS 1
+#define MAKEHOME 4
+
/*
* adduser will take a login_name as its first parameter.
*
* ________________________________________________________________________ */
int adduser_main(int argc, char **argv)
{
- int i = 0;
- char opt;
+ struct passwd pw;
const char *login;
- const char *gecos;
+ const char *gecos = default_gecos;
const char *home = NULL;
- const char *shell;
-
- struct passwd pw;
+ const char *shell = DEFAULT_SHELL;
+ const char *usegroup = NULL;
+ int flags;
+ int setpass = 1;
+ int makehome = 1;
/* init */
if (argc < 2) {
- show_usage();
+ bb_show_usage();
}
- gecos = default_gecos;
- shell = default_shell;
-
/* get args */
- while ((opt = getopt (argc, argv, "h:g:s:")) != -1)
- switch (opt) {
- case 'h':
- home = argv[++i];
- break;
- case 'g':
- gecos = argv[++i];
- break;
- case 's':
- shell = argv[++i];
- break;
- default:
- show_usage ();
- break;
- }
+ flags = bb_getopt_ulflags(argc, argv, "h:g:s:G:DSH", &home, &gecos, &shell, &usegroup);
- /* got root? */
- if (i_am_not_root()) {
- error_msg_and_die( "Only root may add a user or group to the system.");
+ if (flags & SETPASS) {
+ setpass = 0;
}
+ if (flags & MAKEHOME) {
+ makehome = 0;
+ }
+
+ /* got root? */
+ if_i_am_not_root();
/* get login */
if (optind >= argc) {
- error_msg_and_die( "no user specified");
+ bb_error_msg_and_die( "no user specified");
}
login = argv[optind];
}
#ifdef CONFIG_FEATURE_SHADOWPASSWDS
/* is /etc/shadow in use? */
- shadow_enabled = (0 == access(SHADOW_FILE, F_OK));
+ shadow_enabled = (0 == access(bb_path_shadow_file, F_OK));
#endif
/* create a passwd struct */
pw.pw_dir = (char *)home;
pw.pw_shell = (char *)shell;
+ if (usegroup) {
+ /* Add user to a group that already exists */
+ struct group *g;
+
+ g = getgrnam(usegroup);
+ if (g == NULL)
+ bb_error_msg_and_die("group %s does not exist", usegroup);
+
+ pw.pw_gid = g->gr_gid;
+ }
+
/* grand finale */
- return adduser(PASSWD_FILE, &pw);
+ return adduser(bb_path_passwd_file, &pw, makehome, setpass);
}
-
-/* $Id: adduser.c,v 1.1 2002/06/04 20:45:05 sandman Exp $ */
projects / oweals / busybox.git / blobdiff