* Copyright (C) 1999 by Lineo, inc. and John Beppu
* Copyright (C) 1999,2000,2001 by John Beppu <beppu@codepoet.org>
*
- * Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
+ * Licensed under GPLv2 or later, see file LICENSE in this source tree.
*/
+
+//usage:#define adduser_trivial_usage
+//usage: "[OPTIONS] USER"
+//usage:#define adduser_full_usage "\n\n"
+//usage: "Add a user\n"
+//usage: "\n -h DIR Home directory"
+//usage: "\n -g GECOS GECOS field"
+//usage: "\n -s SHELL Login shell"
+//usage: "\n -G GRP Add user to existing 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"
+
#include "libbb.h"
+#if CONFIG_LAST_SYSTEM_ID < CONFIG_FIRST_SYSTEM_ID
+#error Bad LAST_SYSTEM_ID or FIRST_SYSTEM_ID in .config
+#endif
+
/* #define OPT_HOME (1 << 0) */ /* unused */
/* #define OPT_GECOS (1 << 1) */ /* unused */
#define OPT_SHELL (1 << 2)
if (!(option_mask32 & OPT_UID)) {
if (option_mask32 & OPT_SYSTEM_ACCOUNT) {
- p->pw_uid = 100; /* FIRST_SYSTEM_UID */
- max = 999; /* LAST_SYSTEM_UID */
+ p->pw_uid = CONFIG_FIRST_SYSTEM_ID;
+ max = CONFIG_LAST_SYSTEM_ID;
} else {
- p->pw_uid = 1000; /* FIRST_UID */
- max = 64999; /* LAST_UID */
+ 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)
+static void addgroup_wrapper(struct passwd *p, const char *group_name)
{
- char *cmd;
+ char *argv[6];
- cmd = xasprintf("addgroup -g %u '%s'", (unsigned)p->pw_gid, p->pw_name);
- system(cmd);
- free(cmd);
+ 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.
+ */
+#if ENABLE_FEATURE_ADDGROUP_LONG_OPTIONS || !ENABLE_ADDGROUP
+ /* We try to use --gid, not -g, because "standard" addgroup
+ * has no short option -g, it has only long --gid.
+ */
+ argv[1] = (char*)"--gid";
+#else
+ /* Breaks if system in fact does NOT use busybox addgroup */
+ argv[1] = (char*)"-g";
+#endif
+ argv[2] = utoa(p->pw_gid);
+ argv[3] = (char*)"--";
+ argv[4] = p->pw_name;
+ argv[5] = NULL;
+ }
+
+ 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)
{
- static const char prog[] ALIGN1 = "passwd";
-
- BB_EXECLP(prog, prog, login, NULL);
- bb_error_msg_and_die("can't execute %s, you must set password manually", prog);
+ BB_EXECLP("passwd", "passwd", "--", login_name, NULL);
+ bb_error_msg_and_die("can't execute passwd, you must set password manually");
}
#if ENABLE_FEATURE_ADDUSER_LONG_OPTIONS
}
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 = (char *)get_shell_name();
pw.pw_dir = NULL;
/* exactly one non-option arg */
free(p);
#if ENABLE_FEATURE_SHADOWPASSWDS
- p = xasprintf("!:%u:0:99999:7:::", (unsigned)(time(NULL) / 86400)); /* sp->sp_lstchg */
+ /* /etc/shadow fields:
+ * 1. username
+ * 2. encrypted password
+ * 3. last password change (unix date (unix time/24*60*60))
+ * 4. minimum days required between password changes
+ * 5. maximum days password is valid
+ * 6. days before password is to expire that user is warned
+ * 7. days after password expires that account is disabled
+ * 8. unix date when login expires (i.e. when it may no longer be used)
+ */
+ /* fields: 2 3 4 5 6 78 */
+ p = xasprintf("!:%u:0:99999:7:::", (unsigned)(time(NULL)) / (24*60*60));
/* ignore errors: if file is missing we suppose admin doesn't want it */
update_passwd(bb_path_shadow_file, pw.pw_name, p, NULL);
if (ENABLE_FEATURE_CLEAN_UP)
#endif
/* add to group */
- /* addgroup should be responsible for dealing w/ gshadow */
- /* if using a pre-existing group, don't create one */
- if (!usegroup)
- addgroup_wrapper(&pw);
+ addgroup_wrapper(&pw, usegroup);
/* clear the umask for this process so it doesn't
* screw up the permissions on the mkdir and chown. */
/* set the owner and group so it is owned by the new user,
* then fix up the permissions to 2755. Can't do it before
* since chown will clear the setgid bit */
- if (mkdir(pw.pw_dir, 0755)
- || chown(pw.pw_dir, pw.pw_uid, pw.pw_gid)
- || chmod(pw.pw_dir, 02755) /* set setgid bit on homedir */
+ int mkdir_err = mkdir(pw.pw_dir, 0755);
+ if (mkdir_err == 0) {
+ /* New home. Copy /etc/skel to it */
+ const char *args[] = {
+ "chown",
+ "-R",
+ xasprintf("%u:%u", (int)pw.pw_uid, (int)pw.pw_gid),
+ 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);
+ logmode = LOGMODE_STDIO;
+ chown_main(4, (char**)args);
+ }
+ if ((mkdir_err != 0 && errno != EEXIST)
+ || chown(pw.pw_dir, pw.pw_uid, pw.pw_gid) != 0
+ || chmod(pw.pw_dir, 02755) != 0 /* set setgid bit on homedir */
) {
bb_simple_perror_msg(pw.pw_dir);
}
passwd_wrapper(pw.pw_name);
}
- return 0;
+ return EXIT_SUCCESS;
}
projects / oweals / busybox.git / blobdiff