*
* Licensed under GPLv2 or later, see file LICENSE in this source tree.
*/
+//config:config ADDUSER
+//config: bool "adduser (15 kb)"
+//config: default y
+//config: select LONG_OPTS
+//config: help
+//config: Utility for creating a new user account.
+//config:
+//config:config FEATURE_CHECK_NAMES
+//config: bool "Enable sanity check on user/group names in adduser and addgroup"
+//config: default n
+//config: depends on ADDUSER || ADDGROUP
+//config: help
+//config: Enable sanity check on user and group names in adduser and addgroup.
+//config: To avoid problems, the user or group name should consist only of
+//config: letters, digits, underscores, periods, at signs and dashes,
+//config: and not start with a dash (as defined by IEEE Std 1003.1-2001).
+//config: For compatibility with Samba machine accounts "$" is also supported
+//config: at the end of the user or group name.
+//config:
+//config:config LAST_ID
+//config: int "Last valid uid or gid for adduser and addgroup"
+//config: depends on ADDUSER || ADDGROUP
+//config: default 60000
+//config: help
+//config: Last valid uid or gid for adduser and addgroup
+//config:
+//config:config FIRST_SYSTEM_ID
+//config: int "First valid system uid or gid for adduser and addgroup"
+//config: depends on ADDUSER || ADDGROUP
+//config: range 0 LAST_ID
+//config: default 100
+//config: help
+//config: First valid system uid or gid for adduser and addgroup
+//config:
+//config:config LAST_SYSTEM_ID
+//config: int "Last valid system uid or gid for adduser and addgroup"
+//config: depends on ADDUSER || ADDGROUP
+//config: range FIRST_SYSTEM_ID LAST_ID
+//config: default 999
+//config: help
+//config: Last valid system uid or gid for adduser and addgroup
+
+//applet:IF_ADDUSER(APPLET_NOEXEC(adduser, adduser, BB_DIR_USR_SBIN, BB_SUID_DROP, adduser))
+
+//kbuild:lib-$(CONFIG_ADDUSER) += adduser.o
+
+//usage:#define adduser_trivial_usage
+//usage: "[OPTIONS] USER [GROUP]"
+//usage:#define adduser_full_usage "\n\n"
+//usage: "Create new user, or add USER to GROUP\n"
+//usage: "\n -h DIR Home directory"
+//usage: "\n -g GECOS GECOS field"
+//usage: "\n -s SHELL Login shell"
+//usage: "\n -G GRP Group"
+//usage: "\n -S Create a system user"
+//usage: "\n -D Don't assign a password"
+//usage: "\n -H Don't create home directory"
+//usage: "\n -u UID User id"
+//usage: "\n -k SKEL Skeleton directory (/etc/skel)"
+
#include "libbb.h"
#if CONFIG_LAST_SYSTEM_ID < CONFIG_FIRST_SYSTEM_ID
#error Bad LAST_SYSTEM_ID or FIRST_SYSTEM_ID in .config
#endif
+#if CONFIG_LAST_ID < CONFIG_LAST_SYSTEM_ID
+#error Bad LAST_ID or LAST_SYSTEM_ID in .config
+#endif
+
/* #define OPT_HOME (1 << 0) */ /* unused */
/* #define OPT_GECOS (1 << 1) */ /* unused */
#define OPT_SYSTEM_ACCOUNT (1 << 5)
#define OPT_DONT_MAKE_HOME (1 << 6)
#define OPT_UID (1 << 7)
+#define OPT_SKEL (1 << 8)
-/* We assume UID_T_MAX == INT_MAX */
/* remix */
/* recoded such that the uid may be passed in *p */
static void passwd_study(struct passwd *p)
{
- int max = UINT_MAX;
+ int max = CONFIG_LAST_ID;
if (getpwnam(p->pw_name)) {
bb_error_msg_and_die("%s '%s' in use", "user", p->pw_name);
max = CONFIG_LAST_SYSTEM_ID;
} else {
p->pw_uid = CONFIG_LAST_SYSTEM_ID + 1;
- max = 64999;
}
}
/* check for a free uid (and maybe gid) */
}
if (p->pw_uid == max) {
bb_error_msg_and_die("no %cids left", 'u');
+ /* this format string is reused in adduser and addgroup */
}
p->pw_uid++;
}
}
}
-static void addgroup_wrapper(struct passwd *p, const char *group_name)
+static int addgroup_wrapper(struct passwd *p, const char *group_name)
{
- char *cmd;
-
- if (group_name) /* Add user to existing group */
- cmd = xasprintf("addgroup '%s' '%s'", p->pw_name, group_name);
- else /* Add user to his own group with the first free gid found in passwd_study */
- cmd = xasprintf("addgroup -g %u '%s'", (unsigned)p->pw_gid, p->pw_name);
- /* Warning: to be compatible with external addgroup programs we should use --gid instead */
- system(cmd);
- free(cmd);
+ char *argv[6];
+
+ argv[0] = (char*)"addgroup";
+ if (group_name) {
+ /* Add user to existing group */
+ argv[1] = (char*)"--";
+ argv[2] = p->pw_name;
+ argv[3] = (char*)group_name;
+ argv[4] = NULL;
+ } else {
+ /* Add user to his own group with the first free gid
+ * found in passwd_study.
+ */
+ argv[1] = (char*)"--gid";
+ argv[2] = utoa(p->pw_gid);
+ argv[3] = (char*)"--";
+ argv[4] = p->pw_name;
+ argv[5] = NULL;
+ }
+
+ return spawn_and_wait(argv);
}
-static void passwd_wrapper(const char *login) NORETURN;
+static void passwd_wrapper(const char *login_name) NORETURN;
-static void passwd_wrapper(const char *login)
+static void passwd_wrapper(const char *login_name)
{
- BB_EXECLP("passwd", "passwd", login, NULL);
- bb_error_msg_and_die("can't execute passwd, you must set password manually");
+ BB_EXECLP("passwd", "passwd", "--", login_name, NULL);
+ bb_simple_error_msg_and_die("can't execute passwd, you must set password manually");
}
-#if ENABLE_FEATURE_ADDUSER_LONG_OPTIONS
+//FIXME: upstream adduser has no short options! NOT COMPATIBLE!
static const char adduser_longopts[] ALIGN1 =
"home\0" Required_argument "h"
"gecos\0" Required_argument "g"
"system\0" No_argument "S"
"no-create-home\0" No_argument "H"
"uid\0" Required_argument "u"
+ "skel\0" Required_argument "k"
;
-#endif
/*
* adduser will take a login_name as its first parameter.
const char *usegroup = NULL;
char *p;
unsigned opts;
-
-#if ENABLE_FEATURE_ADDUSER_LONG_OPTIONS
- applet_long_options = adduser_longopts;
-#endif
+ char *uid;
+ const char *skel = "/etc/skel";
/* got root? */
if (geteuid()) {
- bb_error_msg_and_die(bb_msg_perm_denied_are_you_root);
+ bb_simple_error_msg_and_die(bb_msg_perm_denied_are_you_root);
}
pw.pw_gecos = (char *)"Linux User,,,";
- pw.pw_shell = (char *)DEFAULT_SHELL;
+ /* We assume that newly created users "inherit" root's shell setting */
+ pw.pw_shell = xstrdup(get_shell_name()); /* might come from getpwnam(), need to make a copy */
pw.pw_dir = NULL;
- /* exactly one non-option arg */
- /* disable interactive passwd for system accounts */
- opt_complementary = "=1:SD:u+";
- if (sizeof(pw.pw_uid) == sizeof(int)) {
- opts = getopt32(argv, "h:g:s:G:DSHu:", &pw.pw_dir, &pw.pw_gecos, &pw.pw_shell, &usegroup, &pw.pw_uid);
- } else {
- unsigned uid;
- opts = getopt32(argv, "h:g:s:G:DSHu:", &pw.pw_dir, &pw.pw_gecos, &pw.pw_shell, &usegroup, &uid);
- if (opts & OPT_UID) {
- pw.pw_uid = uid;
- }
- }
+ opts = getopt32long(argv, "^"
+ "h:g:s:G:DSHu:k:"
+ /* at least one and at most two non-option args */
+ /* disable interactive passwd for system accounts */
+ "\0" "-1:?2:SD",
+ adduser_longopts,
+ &pw.pw_dir, &pw.pw_gecos, &pw.pw_shell,
+ &usegroup, &uid, &skel
+ );
+ if (opts & OPT_UID)
+ pw.pw_uid = xatou_range(uid, 0, CONFIG_LAST_ID);
+
argv += optind;
+ pw.pw_name = argv[0];
+
+ if (!opts && argv[1]) {
+ /* if called with two non-option arguments, adduser
+ * will add an existing user to an existing group.
+ */
+ return addgroup_wrapper(&pw, argv[1]);
+ }
/* fill in the passwd struct */
- pw.pw_name = argv[0];
die_if_bad_username(pw.pw_name);
if (!pw.pw_dir) {
/* create string for $HOME if not specified already */
}
if (ENABLE_FEATURE_CLEAN_UP)
free(p);
-
#if ENABLE_FEATURE_SHADOWPASSWDS
/* /etc/shadow fields:
* 1. username
if (mkdir_err == 0) {
/* New home. Copy /etc/skel to it */
const char *args[] = {
- "chown", "-R",
+ "chown",
+ "-R",
xasprintf("%u:%u", (int)pw.pw_uid, (int)pw.pw_gid),
- pw.pw_dir, NULL
+ pw.pw_dir,
+ NULL
};
/* Be silent on any errors (like: no /etc/skel) */
- logmode = LOGMODE_NONE;
- copy_file("/etc/skel", pw.pw_dir, FILEUTILS_RECUR);
+ if (!(opts & OPT_SKEL))
+ logmode = LOGMODE_NONE;
+ copy_file(skel, pw.pw_dir, FILEUTILS_RECUR);
logmode = LOGMODE_STDIO;
chown_main(4, (char**)args);
}
projects / oweals / busybox.git / blobdiff