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-rw-r--r--src/usermod.c2388
1 files changed, 2388 insertions, 0 deletions
diff --git a/src/usermod.c b/src/usermod.c
new file mode 100644
index 0000000..c1a5b2c
--- /dev/null
+++ b/src/usermod.c
@@ -0,0 +1,2388 @@
+/*
+ * SPDX-FileCopyrightText: 1991 - 1994, Julianne Frances Haugh
+ * SPDX-FileCopyrightText: 1996 - 2000, Marek Michałkiewicz
+ * SPDX-FileCopyrightText: 2000 - 2006, Tomasz Kłoczko
+ * SPDX-FileCopyrightText: 2007 - 2011, Nicolas François
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <config.h>
+
+#ident "$Id$"
+
+#include <assert.h>
+#include <ctype.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <getopt.h>
+#include <grp.h>
+#include <lastlog.h>
+#include <pwd.h>
+#ifdef ACCT_TOOLS_SETUID
+#ifdef USE_PAM
+#include "pam_defs.h"
+#endif /* USE_PAM */
+#endif /* ACCT_TOOLS_SETUID */
+#include <stdio.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <time.h>
+#include "chkname.h"
+#include "defines.h"
+#include "faillog.h"
+#include "getdef.h"
+#include "groupio.h"
+#include "nscd.h"
+#include "sssd.h"
+#include "prototypes.h"
+#include "pwauth.h"
+#include "pwio.h"
+#ifdef SHADOWGRP
+#include "sgroupio.h"
+#endif
+#include "shadowio.h"
+#ifdef ENABLE_SUBIDS
+#include "subordinateio.h"
+#endif /* ENABLE_SUBIDS */
+#ifdef WITH_SELINUX
+#include <selinux/selinux.h>
+#endif /* WITH_SELINUX */
+#ifdef WITH_TCB
+#include "tcbfuncs.h"
+#endif
+#include "shadowlog.h"
+
+/*
+ * exit status values
+ * for E_GRP_UPDATE and E_NOSPACE (not used yet), other update requests
+ * will be implemented (as documented in the Solaris 2.x man page).
+ */
+/*@-exitarg@*/
+#define E_SUCCESS 0 /* success */
+#define E_PW_UPDATE 1 /* can't update password file */
+#define E_USAGE 2 /* invalid command syntax */
+#define E_BAD_ARG 3 /* invalid argument to option */
+#define E_UID_IN_USE 4 /* UID already in use (and no -o) */
+/* #define E_BAD_PWFILE 5 passwd file contains errors */
+#define E_NOTFOUND 6 /* specified user/group doesn't exist */
+#define E_USER_BUSY 8 /* user to modify is logged in */
+#define E_NAME_IN_USE 9 /* username or group name already in use */
+#define E_GRP_UPDATE 10 /* can't update group file */
+/* #define E_NOSPACE 11 insufficient space to move home dir */
+#define E_HOMEDIR 12 /* unable to complete home dir move */
+#define E_SE_UPDATE 13 /* can't update SELinux user mapping */
+#ifdef ENABLE_SUBIDS
+#define E_SUB_UID_UPDATE 16 /* can't update the subordinate uid file */
+#define E_SUB_GID_UPDATE 18 /* can't update the subordinate gid file */
+#endif /* ENABLE_SUBIDS */
+
+#define VALID(s) (strcspn (s, ":\n") == strlen (s))
+
+/*
+ * Global variables
+ */
+const char *Prog;
+
+static char *user_name;
+static char *user_newname;
+static char *user_pass;
+static uid_t user_id;
+static uid_t user_newid;
+static gid_t user_gid;
+static gid_t user_newgid;
+static char *user_comment;
+static char *user_newcomment;
+static char *user_home;
+static char *user_newhome;
+static char *user_shell;
+#ifdef WITH_SELINUX
+static const char *user_selinux = "";
+#endif /* WITH_SELINUX */
+static char *user_newshell;
+static long user_expire;
+static long user_newexpire;
+static long user_inactive;
+static long user_newinactive;
+static long sys_ngroups;
+static char **user_groups; /* NULL-terminated list */
+
+static const char* prefix = "";
+static char* prefix_user_home = NULL;
+static char* prefix_user_newhome = NULL;
+
+static bool
+ aflg = false, /* append to existing secondary group set */
+ cflg = false, /* new comment (GECOS) field */
+ dflg = false, /* new home directory */
+ eflg = false, /* days since 1970-01-01 when account becomes expired */
+ fflg = false, /* days until account with expired password is locked */
+ gflg = false, /* new primary group ID */
+ Gflg = false, /* new secondary group set */
+ Lflg = false, /* lock the password */
+ lflg = false, /* new user name */
+ mflg = false, /* create user's home directory if it doesn't exist */
+ oflg = false, /* permit non-unique user ID to be specified with -u */
+ pflg = false, /* new encrypted password */
+ rflg = false, /* remove a user from a single group */
+ sflg = false, /* new shell program */
+#ifdef WITH_SELINUX
+ Zflg = false, /* new selinux user */
+#endif
+#ifdef ENABLE_SUBIDS
+ vflg = false, /* add subordinate uids */
+ Vflg = false, /* delete subordinate uids */
+ wflg = false, /* add subordinate gids */
+ Wflg = false, /* delete subordinate gids */
+#endif /* ENABLE_SUBIDS */
+ uflg = false, /* specify new user ID */
+ Uflg = false; /* unlock the password */
+
+static bool is_shadow_pwd;
+
+#ifdef SHADOWGRP
+static bool is_shadow_grp;
+#endif
+
+#ifdef ENABLE_SUBIDS
+static bool is_sub_uid = false;
+static bool is_sub_gid = false;
+#endif /* ENABLE_SUBIDS */
+
+static bool pw_locked = false;
+static bool spw_locked = false;
+static bool gr_locked = false;
+#ifdef SHADOWGRP
+static bool sgr_locked = false;
+#endif
+#ifdef ENABLE_SUBIDS
+static bool sub_uid_locked = false;
+static bool sub_gid_locked = false;
+#endif /* ENABLE_SUBIDS */
+
+
+/* local function prototypes */
+static int get_groups (char *);
+static /*@noreturn@*/void usage (int status);
+static void new_pwent (struct passwd *);
+static void new_spent (struct spwd *);
+static /*@noreturn@*/void fail_exit (int);
+static void update_group (void);
+
+#ifdef SHADOWGRP
+static void update_gshadow (void);
+#endif
+static void grp_update (void);
+
+static void process_flags (int, char **);
+static void close_files (void);
+static void open_files (void);
+static void usr_update (void);
+static void move_home (void);
+static void update_lastlog (void);
+static void update_faillog (void);
+
+#ifndef NO_MOVE_MAILBOX
+static void move_mailbox (void);
+#endif
+
+extern int allow_bad_names;
+
+/*
+ * get_groups - convert a list of group names to an array of group IDs
+ *
+ * get_groups() takes a comma-separated list of group names and
+ * converts it to a NULL-terminated array. Any unknown group names are
+ * reported as errors.
+ */
+static int get_groups (char *list)
+{
+ char *cp;
+ const struct group *grp;
+ int errors = 0;
+ int ngroups = 0;
+
+ /*
+ * Initialize the list to be empty
+ */
+ user_groups[0] = (char *) 0;
+
+ if ('\0' == *list) {
+ return 0;
+ }
+
+ /*
+ * So long as there is some data to be converted, strip off each
+ * name and look it up. A mix of numerical and string values for
+ * group identifiers is permitted.
+ */
+ do {
+ /*
+ * Strip off a single name from the list
+ */
+ cp = strchr (list, ',');
+ if (NULL != cp) {
+ *cp = '\0';
+ cp++;
+ }
+
+ /*
+ * Names starting with digits are treated as numerical GID
+ * values, otherwise the string is looked up as is.
+ */
+ grp = prefix_getgr_nam_gid (list);
+
+ /*
+ * There must be a match, either by GID value or by
+ * string name.
+ */
+ if (NULL == grp) {
+ fprintf (stderr, _("%s: group '%s' does not exist\n"),
+ Prog, list);
+ errors++;
+ }
+ list = cp;
+
+ /*
+ * If the group doesn't exist, don't dump core. Instead,
+ * try the next one. --marekm
+ */
+ if (NULL == grp) {
+ continue;
+ }
+
+#ifdef USE_NIS
+ /*
+ * Don't add this group if they are an NIS group. Tell the
+ * user to go to the server for this group.
+ */
+ if (__isgrNIS ()) {
+ fprintf (stderr,
+ _("%s: group '%s' is a NIS group.\n"),
+ Prog, grp->gr_name);
+ gr_free ((struct group *)grp);
+ continue;
+ }
+#endif
+
+ if (ngroups == sys_ngroups) {
+ fprintf (stderr,
+ _("%s: too many groups specified (max %d).\n"),
+ Prog, ngroups);
+ gr_free ((struct group *)grp);
+ break;
+ }
+
+ /*
+ * Add the group name to the user's list of groups.
+ */
+ user_groups[ngroups++] = xstrdup (grp->gr_name);
+ gr_free ((struct group *)grp);
+ } while (NULL != list);
+
+ user_groups[ngroups] = (char *) 0;
+
+ /*
+ * Any errors in finding group names are fatal
+ */
+ if (0 != errors) {
+ return -1;
+ }
+
+ return 0;
+}
+
+#ifdef ENABLE_SUBIDS
+struct ulong_range
+{
+ unsigned long first;
+ unsigned long last;
+};
+
+static struct ulong_range getulong_range(const char *str)
+{
+ struct ulong_range result = { .first = ULONG_MAX, .last = 0 };
+ long long first, last;
+ char *pos;
+
+ errno = 0;
+ first = strtoll(str, &pos, 10);
+ if (('\0' == *str) || ('-' != *pos ) || (ERANGE == errno) ||
+ (first != (unsigned long int)first))
+ goto out;
+
+ errno = 0;
+ last = strtoll(pos + 1, &pos, 10);
+ if (('\0' != *pos ) || (ERANGE == errno) ||
+ (last != (unsigned long int)last))
+ goto out;
+
+ if (first > last)
+ goto out;
+
+ result.first = (unsigned long int)first;
+ result.last = (unsigned long int)last;
+out:
+ return result;
+}
+
+struct ulong_range_list_entry {
+ struct ulong_range_list_entry *next;
+ struct ulong_range range;
+};
+
+static struct ulong_range_list_entry *add_sub_uids = NULL, *del_sub_uids = NULL;
+static struct ulong_range_list_entry *add_sub_gids = NULL, *del_sub_gids = NULL;
+
+static int prepend_range(const char *str, struct ulong_range_list_entry **head)
+{
+ struct ulong_range range;
+ struct ulong_range_list_entry *entry;
+ range = getulong_range(str);
+ if (range.first > range.last)
+ return 0;
+
+ entry = malloc(sizeof(*entry));
+ if (!entry) {
+ fprintf (stderr,
+ _("%s: failed to allocate memory: %s\n"),
+ Prog, strerror (errno));
+ return 0;
+ }
+ entry->next = *head;
+ entry->range = range;
+ *head = entry;
+ return 1;
+}
+#endif /* ENABLE_SUBIDS */
+
+/*
+ * usage - display usage message and exit
+ */
+static /*@noreturn@*/void usage (int status)
+{
+ FILE *usageout = (E_SUCCESS != status) ? stderr : stdout;
+ (void) fprintf (usageout,
+ _("Usage: %s [options] LOGIN\n"
+ "\n"
+ "Options:\n"),
+ Prog);
+ (void) fputs (_(" -a, --append append the user to the supplemental GROUPS\n"
+ " mentioned by the -G option without removing\n"
+ " the user from other groups\n"), usageout);
+ (void) fputs (_(" -b, --badname allow bad names\n"), usageout);
+ (void) fputs (_(" -c, --comment COMMENT new value of the GECOS field\n"), usageout);
+ (void) fputs (_(" -d, --home HOME_DIR new home directory for the user account\n"), usageout);
+ (void) fputs (_(" -e, --expiredate EXPIRE_DATE set account expiration date to EXPIRE_DATE\n"), usageout);
+ (void) fputs (_(" -f, --inactive INACTIVE set password inactive after expiration\n"
+ " to INACTIVE\n"), usageout);
+ (void) fputs (_(" -g, --gid GROUP force use GROUP as new primary group\n"), usageout);
+ (void) fputs (_(" -G, --groups GROUPS new list of supplementary GROUPS\n"), usageout);
+ (void) fputs (_(" -h, --help display this help message and exit\n"), usageout);
+ (void) fputs (_(" -l, --login NEW_LOGIN new value of the login name\n"), usageout);
+ (void) fputs (_(" -L, --lock lock the user account\n"), usageout);
+ (void) fputs (_(" -m, --move-home move contents of the home directory to the\n"
+ " new location (use only with -d)\n"), usageout);
+ (void) fputs (_(" -o, --non-unique allow using duplicate (non-unique) UID\n"), usageout);
+ (void) fputs (_(" -p, --password PASSWORD use encrypted password for the new password\n"), usageout);
+ (void) fputs (_(" -P, --prefix PREFIX_DIR prefix directory where are located the /etc/* files\n"), usageout);
+ (void) fputs (_(" -r, --remove remove the user from only the supplemental GROUPS\n"
+ " mentioned by the -G option without removing\n"
+ " the user from other groups\n"), usageout);
+ (void) fputs (_(" -R, --root CHROOT_DIR directory to chroot into\n"), usageout);
+ (void) fputs (_(" -s, --shell SHELL new login shell for the user account\n"), usageout);
+ (void) fputs (_(" -u, --uid UID new UID for the user account\n"), usageout);
+ (void) fputs (_(" -U, --unlock unlock the user account\n"), usageout);
+#ifdef ENABLE_SUBIDS
+ (void) fputs (_(" -v, --add-subuids FIRST-LAST add range of subordinate uids\n"), usageout);
+ (void) fputs (_(" -V, --del-subuids FIRST-LAST remove range of subordinate uids\n"), usageout);
+ (void) fputs (_(" -w, --add-subgids FIRST-LAST add range of subordinate gids\n"), usageout);
+ (void) fputs (_(" -W, --del-subgids FIRST-LAST remove range of subordinate gids\n"), usageout);
+#endif /* ENABLE_SUBIDS */
+#ifdef WITH_SELINUX
+ (void) fputs (_(" -Z, --selinux-user SEUSER new SELinux user mapping for the user account\n"), usageout);
+#endif /* WITH_SELINUX */
+ (void) fputs ("\n", usageout);
+ exit (status);
+}
+
+/*
+ * update encrypted password string (for both shadow and non-shadow
+ * passwords)
+ */
+static char *new_pw_passwd (char *pw_pass)
+{
+ if (Lflg && ('!' != pw_pass[0])) {
+ char *buf = xmalloc (strlen (pw_pass) + 2);
+
+#ifdef WITH_AUDIT
+ audit_logger (AUDIT_USER_CHAUTHTOK, Prog,
+ "updating passwd",
+ user_newname, (unsigned int) user_newid, 0);
+#endif
+ SYSLOG ((LOG_INFO, "lock user '%s' password", user_newname));
+ strcpy (buf, "!");
+ strcat (buf, pw_pass);
+ pw_pass = buf;
+ } else if (Uflg && pw_pass[0] == '!') {
+ char *s;
+
+ if (pw_pass[1] == '\0') {
+ fprintf (stderr,
+ _("%s: unlocking the user's password would result in a passwordless account.\n"
+ "You should set a password with usermod -p to unlock this user's password.\n"),
+ Prog);
+ return pw_pass;
+ }
+
+#ifdef WITH_AUDIT
+ audit_logger (AUDIT_USER_CHAUTHTOK, Prog,
+ "updating password",
+ user_newname, (unsigned int) user_newid, 0);
+#endif
+ SYSLOG ((LOG_INFO, "unlock user '%s' password", user_newname));
+ s = pw_pass;
+ while ('\0' != *s) {
+ *s = *(s + 1);
+ s++;
+ }
+ } else if (pflg) {
+#ifdef WITH_AUDIT
+ audit_logger (AUDIT_USER_CHAUTHTOK, Prog,
+ "changing password",
+ user_newname, (unsigned int) user_newid, 1);
+#endif
+ SYSLOG ((LOG_INFO, "change user '%s' password", user_newname));
+ pw_pass = xstrdup (user_pass);
+ }
+ return pw_pass;
+}
+
+/*
+ * new_pwent - initialize the values in a password file entry
+ *
+ * new_pwent() takes all of the values that have been entered and fills
+ * in a (struct passwd) with them.
+ */
+static void new_pwent (struct passwd *pwent)
+{
+ if (lflg) {
+ if (pw_locate (user_newname) != NULL) {
+ /* This should never happen.
+ * It was already checked that the user doesn't
+ * exist on the system.
+ */
+ fprintf (stderr,
+ _("%s: user '%s' already exists in %s\n"),
+ Prog, user_newname, pw_dbname ());
+ fail_exit (E_NAME_IN_USE);
+ }
+#ifdef WITH_AUDIT
+ audit_logger (AUDIT_USER_CHAUTHTOK, Prog,
+ "changing name",
+ user_newname, (unsigned int) user_newid, 1);
+#endif
+ SYSLOG ((LOG_INFO,
+ "change user name '%s' to '%s'",
+ pwent->pw_name, user_newname));
+ pwent->pw_name = xstrdup (user_newname);
+ }
+ /* Update the password in passwd if there is no shadow file or if
+ * the password is currently in passwd (pw_passwd != "x").
+ * We do not force the usage of shadow passwords if they are not
+ * used for this account.
+ */
+ if ( (!is_shadow_pwd)
+ || (strcmp (pwent->pw_passwd, SHADOW_PASSWD_STRING) != 0)) {
+ pwent->pw_passwd = new_pw_passwd (pwent->pw_passwd);
+ }
+
+ if (uflg) {
+#ifdef WITH_AUDIT
+ audit_logger (AUDIT_USER_CHAUTHTOK, Prog,
+ "changing uid",
+ user_newname, (unsigned int) user_newid, 1);
+#endif
+ SYSLOG ((LOG_INFO,
+ "change user '%s' UID from '%d' to '%d'",
+ pwent->pw_name, pwent->pw_uid, user_newid));
+ pwent->pw_uid = user_newid;
+ }
+ if (gflg) {
+#ifdef WITH_AUDIT
+ audit_logger (AUDIT_USER_CHAUTHTOK, Prog,
+ "changing primary group",
+ user_newname, (unsigned int) user_newid, 1);
+#endif
+ SYSLOG ((LOG_INFO,
+ "change user '%s' GID from '%d' to '%d'",
+ pwent->pw_name, pwent->pw_gid, user_newgid));
+ pwent->pw_gid = user_newgid;
+ }
+ if (cflg) {
+#ifdef WITH_AUDIT
+ audit_logger (AUDIT_USER_CHAUTHTOK, Prog,
+ "changing comment",
+ user_newname, (unsigned int) user_newid, 1);
+#endif
+ pwent->pw_gecos = user_newcomment;
+ }
+
+ if (dflg) {
+#ifdef WITH_AUDIT
+ audit_logger (AUDIT_USER_CHAUTHTOK, Prog,
+ "changing home directory",
+ user_newname, (unsigned int) user_newid, 1);
+#endif
+ SYSLOG ((LOG_INFO,
+ "change user '%s' home from '%s' to '%s'",
+ pwent->pw_name, pwent->pw_dir, user_newhome));
+
+ if (strlen(user_newhome) > 1
+ && '/' == user_newhome[strlen(user_newhome)-1]) {
+ user_newhome[strlen(user_newhome)-1]='\0';
+ }
+
+ pwent->pw_dir = user_newhome;
+ }
+ if (sflg) {
+#ifdef WITH_AUDIT
+ audit_logger (AUDIT_USER_CHAUTHTOK, Prog,
+ "changing user shell",
+ user_newname, (unsigned int) user_newid, 1);
+#endif
+ SYSLOG ((LOG_INFO,
+ "change user '%s' shell from '%s' to '%s'",
+ pwent->pw_name, pwent->pw_shell, user_newshell));
+ pwent->pw_shell = user_newshell;
+ }
+}
+
+/*
+ * new_spent - initialize the values in a shadow password file entry
+ *
+ * new_spent() takes all of the values that have been entered and fills
+ * in a (struct spwd) with them.
+ */
+static void new_spent (struct spwd *spent)
+{
+ if (lflg) {
+ if (spw_locate (user_newname) != NULL) {
+ fprintf (stderr,
+ _("%s: user '%s' already exists in %s\n"),
+ Prog, user_newname, spw_dbname ());
+ fail_exit (E_NAME_IN_USE);
+ }
+ spent->sp_namp = xstrdup (user_newname);
+ }
+
+ if (fflg) {
+#ifdef WITH_AUDIT
+ audit_logger (AUDIT_USER_CHAUTHTOK, Prog,
+ "changing inactive days",
+ user_newname, (unsigned int) user_newid, 1);
+#endif
+ SYSLOG ((LOG_INFO,
+ "change user '%s' inactive from '%ld' to '%ld'",
+ spent->sp_namp, spent->sp_inact, user_newinactive));
+ spent->sp_inact = user_newinactive;
+ }
+ if (eflg) {
+ /* log dates rather than numbers of days. */
+ char new_exp[16], old_exp[16];
+ date_to_str (sizeof(new_exp), new_exp, user_newexpire * DAY);
+ date_to_str (sizeof(old_exp), old_exp, user_expire * DAY);
+#ifdef WITH_AUDIT
+ audit_logger (AUDIT_USER_CHAUTHTOK, Prog,
+ "changing expiration date",
+ user_newname, (unsigned int) user_newid, 1);
+#endif
+ SYSLOG ((LOG_INFO,
+ "change user '%s' expiration from '%s' to '%s'",
+ spent->sp_namp, old_exp, new_exp));
+ spent->sp_expire = user_newexpire;
+ }
+
+ /* Always update the shadowed password if there is a shadow entry
+ * (even if shadowed passwords might not be enabled for this
+ * account (pw_passwd != "x")).
+ * It seems better to update the password in both places in case a
+ * shadow and a non shadow entry exist.
+ * This might occur if:
+ * + there were already both entries
+ * + aging has been requested
+ */
+ spent->sp_pwdp = new_pw_passwd (spent->sp_pwdp);
+
+ if (pflg) {
+ spent->sp_lstchg = (long) gettime () / SCALE;
+ if (0 == spent->sp_lstchg) {
+ /* Better disable aging than requiring a password
+ * change. */
+ spent->sp_lstchg = -1;
+ }
+ }
+}
+
+/*
+ * fail_exit - exit with an error code after unlocking files
+ */
+static /*@noreturn@*/void fail_exit (int code)
+{
+ if (gr_locked) {
+ if (gr_unlock () == 0) {
+ fprintf (stderr, _("%s: failed to unlock %s\n"), Prog, gr_dbname ());
+ SYSLOG ((LOG_ERR, "failed to unlock %s", gr_dbname ()));
+ /* continue */
+ }
+ }
+#ifdef SHADOWGRP
+ if (sgr_locked) {
+ if (sgr_unlock () == 0) {
+ fprintf (stderr, _("%s: failed to unlock %s\n"), Prog, sgr_dbname ());
+ SYSLOG ((LOG_ERR, "failed to unlock %s", sgr_dbname ()));
+ /* continue */
+ }
+ }
+#endif
+ if (spw_locked) {
+ if (spw_unlock () == 0) {
+ fprintf (stderr, _("%s: failed to unlock %s\n"), Prog, spw_dbname ());
+ SYSLOG ((LOG_ERR, "failed to unlock %s", spw_dbname ()));
+ /* continue */
+ }
+ }
+ if (pw_locked) {
+ if (pw_unlock () == 0) {
+ fprintf (stderr, _("%s: failed to unlock %s\n"), Prog, pw_dbname ());
+ SYSLOG ((LOG_ERR, "failed to unlock %s", pw_dbname ()));
+ /* continue */
+ }
+ }
+#ifdef ENABLE_SUBIDS
+ if (sub_uid_locked) {
+ if (sub_uid_unlock () == 0) {
+ fprintf (stderr, _("%s: failed to unlock %s\n"), Prog, sub_uid_dbname ());
+ SYSLOG ((LOG_ERR, "failed to unlock %s", sub_uid_dbname ()));
+ /* continue */
+ }
+ }
+ if (sub_gid_locked) {
+ if (sub_gid_unlock () == 0) {
+ fprintf (stderr, _("%s: failed to unlock %s\n"), Prog, sub_gid_dbname ());
+ SYSLOG ((LOG_ERR, "failed to unlock %s", sub_gid_dbname ()));
+ /* continue */
+ }
+ }
+#endif /* ENABLE_SUBIDS */
+
+#ifdef WITH_AUDIT
+ audit_logger (AUDIT_USER_CHAUTHTOK, Prog,
+ "modifying account",
+ user_name, AUDIT_NO_ID, 0);
+#endif
+ exit (code);
+}
+
+
+static void update_group (void)
+{
+ bool is_member;
+ bool was_member;
+ bool changed;
+ const struct group *grp;
+ struct group *ngrp;
+
+ changed = false;
+
+ /*
+ * Scan through the entire group file looking for the groups that
+ * the user is a member of.
+ */
+ while ((grp = gr_next ()) != NULL) {
+ /*
+ * See if the user specified this group as one of their
+ * concurrent groups.
+ */
+ was_member = is_on_list (grp->gr_mem, user_name);
+ is_member = Gflg && ( (was_member && aflg)
+ || is_on_list (user_groups, grp->gr_name));
+
+ if (!was_member && !is_member) {
+ continue;
+ }
+
+ /*
+ * If rflg+Gflg is passed in AKA -rG invert is_member flag, which removes
+ * mentioned groups while leaving the others.
+ */
+ if (Gflg && rflg) {
+ is_member = !is_member;
+ }
+
+ ngrp = __gr_dup (grp);
+ if (NULL == ngrp) {
+ fprintf (stderr,
+ _("%s: Out of memory. Cannot update %s.\n"),
+ Prog, gr_dbname ());
+ fail_exit (E_GRP_UPDATE);
+ }
+
+ if (was_member) {
+ if ((!Gflg) || is_member) {
+ /* User was a member and is still a member
+ * of this group.
+ * But the user might have been renamed.
+ */
+ if (lflg) {
+ ngrp->gr_mem = del_list (ngrp->gr_mem,
+ user_name);
+ ngrp->gr_mem = add_list (ngrp->gr_mem,
+ user_newname);
+ changed = true;
+#ifdef WITH_AUDIT
+ audit_logger (AUDIT_USER_CHAUTHTOK, Prog,
+ "changing group member",
+ user_newname, AUDIT_NO_ID, 1);
+#endif
+ SYSLOG ((LOG_INFO,
+ "change '%s' to '%s' in group '%s'",
+ user_name, user_newname,
+ ngrp->gr_name));
+ }
+ } else {
+ /* User was a member but is no more a
+ * member of this group.
+ */
+ ngrp->gr_mem = del_list (ngrp->gr_mem, user_name);
+ changed = true;
+#ifdef WITH_AUDIT
+ audit_logger (AUDIT_USER_CHAUTHTOK, Prog,
+ "removing group member",
+ user_name, AUDIT_NO_ID, 1);
+#endif
+ SYSLOG ((LOG_INFO,
+ "delete '%s' from group '%s'",
+ user_name, ngrp->gr_name));
+ }
+ } else if (is_member) {
+ /* User was not a member but is now a member this
+ * group.
+ */
+ ngrp->gr_mem = add_list (ngrp->gr_mem, user_newname);
+ changed = true;
+#ifdef WITH_AUDIT
+ audit_logger (AUDIT_USER_CHAUTHTOK, Prog,
+ "adding user to group",
+ user_name, AUDIT_NO_ID, 1);
+#endif
+ SYSLOG ((LOG_INFO, "add '%s' to group '%s'",
+ user_newname, ngrp->gr_name));
+ }
+ if (!changed) {
+ continue;
+ }
+
+ changed = false;
+ if (gr_update (ngrp) == 0) {
+ fprintf (stderr,
+ _("%s: failed to prepare the new %s entry '%s'\n"),
+ Prog, gr_dbname (), ngrp->gr_name);
+ SYSLOG ((LOG_WARN, "failed to prepare the new %s entry '%s'", gr_dbname (), ngrp->gr_name));
+ fail_exit (E_GRP_UPDATE);
+ }
+
+ gr_free(ngrp);
+ }
+}
+
+#ifdef SHADOWGRP
+static void update_gshadow (void)
+{
+ bool is_member;
+ bool was_member;
+ bool was_admin;
+ bool changed;
+ const struct sgrp *sgrp;
+ struct sgrp *nsgrp;
+
+ changed = false;
+
+ /*
+ * Scan through the entire shadow group file looking for the groups
+ * that the user is a member of.
+ */
+ while ((sgrp = sgr_next ()) != NULL) {
+
+ /*
+ * See if the user was a member of this group
+ */
+ was_member = is_on_list (sgrp->sg_mem, user_name);
+
+ /*
+ * See if the user was an administrator of this group
+ */
+ was_admin = is_on_list (sgrp->sg_adm, user_name);
+
+ /*
+ * See if the user specified this group as one of their
+ * concurrent groups.
+ */
+ is_member = Gflg && ( (was_member && aflg)
+ || is_on_list (user_groups, sgrp->sg_name));
+
+ if (!was_member && !was_admin && !is_member) {
+ continue;
+ }
+
+ /*
+ * If rflg+Gflg is passed in AKA -rG invert is_member, to remove targeted
+ * groups while leaving the user apart of groups not mentioned
+ */
+ if (Gflg && rflg) {
+ is_member = !is_member;
+ }
+
+ nsgrp = __sgr_dup (sgrp);
+ if (NULL == nsgrp) {
+ fprintf (stderr,
+ _("%s: Out of memory. Cannot update %s.\n"),
+ Prog, sgr_dbname ());
+ fail_exit (E_GRP_UPDATE);
+ }
+
+ if (was_admin && lflg) {
+ /* User was an admin of this group but the user
+ * has been renamed.
+ */
+ nsgrp->sg_adm = del_list (nsgrp->sg_adm, user_name);
+ nsgrp->sg_adm = add_list (nsgrp->sg_adm, user_newname);
+ changed = true;
+#ifdef WITH_AUDIT
+ audit_logger (AUDIT_USER_CHAUTHTOK, Prog,
+ "changing admin name in shadow group",
+ user_name, AUDIT_NO_ID, 1);
+#endif
+ SYSLOG ((LOG_INFO,
+ "change admin '%s' to '%s' in shadow group '%s'",
+ user_name, user_newname, nsgrp->sg_name));
+ }
+
+ if (was_member) {
+ if ((!Gflg) || is_member) {
+ /* User was a member and is still a member
+ * of this group.
+ * But the user might have been renamed.
+ */
+ if (lflg) {
+ nsgrp->sg_mem = del_list (nsgrp->sg_mem,
+ user_name);
+ nsgrp->sg_mem = add_list (nsgrp->sg_mem,
+ user_newname);
+ changed = true;
+#ifdef WITH_AUDIT
+ audit_logger (AUDIT_USER_CHAUTHTOK, Prog,
+ "changing member in shadow group",
+ user_name, AUDIT_NO_ID, 1);
+#endif
+ SYSLOG ((LOG_INFO,
+ "change '%s' to '%s' in shadow group '%s'",
+ user_name, user_newname,
+ nsgrp->sg_name));
+ }
+ } else {
+ /* User was a member but is no more a
+ * member of this group.
+ */
+ nsgrp->sg_mem = del_list (nsgrp->sg_mem, user_name);
+ changed = true;
+#ifdef WITH_AUDIT
+ audit_logger (AUDIT_USER_CHAUTHTOK, Prog,
+ "removing user from shadow group",
+ user_name, AUDIT_NO_ID, 1);
+#endif
+ SYSLOG ((LOG_INFO,
+ "delete '%s' from shadow group '%s'",
+ user_name, nsgrp->sg_name));
+ }
+ } else if (is_member) {
+ /* User was not a member but is now a member this
+ * group.
+ */
+ nsgrp->sg_mem = add_list (nsgrp->sg_mem, user_newname);
+ changed = true;
+#ifdef WITH_AUDIT
+ audit_logger (AUDIT_USER_CHAUTHTOK, Prog,
+ "adding user to shadow group",
+ user_newname, AUDIT_NO_ID, 1);
+#endif
+ SYSLOG ((LOG_INFO, "add '%s' to shadow group '%s'",
+ user_newname, nsgrp->sg_name));
+ }
+ if (!changed) {
+ continue;
+ }
+
+ changed = false;
+
+ /*
+ * Update the group entry to reflect the changes.
+ */
+ if (sgr_update (nsgrp) == 0) {
+ fprintf (stderr,
+ _("%s: failed to prepare the new %s entry '%s'\n"),
+ Prog, sgr_dbname (), nsgrp->sg_name);
+ SYSLOG ((LOG_WARN, "failed to prepare the new %s entry '%s'",
+ sgr_dbname (), nsgrp->sg_name));
+ fail_exit (E_GRP_UPDATE);
+ }
+
+ free (nsgrp);
+ }
+}
+#endif /* SHADOWGRP */
+
+/*
+ * grp_update - add user to secondary group set
+ *
+ * grp_update() takes the secondary group set given in user_groups and
+ * adds the user to each group given by that set.
+ */
+static void grp_update (void)
+{
+ update_group ();
+#ifdef SHADOWGRP
+ if (is_shadow_grp) {
+ update_gshadow ();
+ }
+#endif
+}
+
+/*
+ * process_flags - perform command line argument setting
+ *
+ * process_flags() interprets the command line arguments and sets the
+ * values that the user will be created with accordingly. The values
+ * are checked for sanity.
+ */
+static void process_flags (int argc, char **argv)
+{
+ const struct group *grp;
+ struct stat st;
+ bool anyflag = false;
+
+ {
+ /*
+ * Parse the command line options.
+ */
+ int c;
+ static struct option long_options[] = {
+ {"append", no_argument, NULL, 'a'},
+ {"badnames", no_argument, NULL, 'b'},
+ {"comment", required_argument, NULL, 'c'},
+ {"home", required_argument, NULL, 'd'},
+ {"expiredate", required_argument, NULL, 'e'},
+ {"inactive", required_argument, NULL, 'f'},
+ {"gid", required_argument, NULL, 'g'},
+ {"groups", required_argument, NULL, 'G'},
+ {"help", no_argument, NULL, 'h'},
+ {"login", required_argument, NULL, 'l'},
+ {"lock", no_argument, NULL, 'L'},
+ {"move-home", no_argument, NULL, 'm'},
+ {"non-unique", no_argument, NULL, 'o'},
+ {"password", required_argument, NULL, 'p'},
+ {"remove", no_argument, NULL, 'r'},
+ {"root", required_argument, NULL, 'R'},
+ {"prefix", required_argument, NULL, 'P'},
+ {"shell", required_argument, NULL, 's'},
+ {"uid", required_argument, NULL, 'u'},
+ {"unlock", no_argument, NULL, 'U'},
+#ifdef ENABLE_SUBIDS
+ {"add-subuids", required_argument, NULL, 'v'},
+ {"del-subuids", required_argument, NULL, 'V'},
+ {"add-subgids", required_argument, NULL, 'w'},
+ {"del-subgids", required_argument, NULL, 'W'},
+#endif /* ENABLE_SUBIDS */
+#ifdef WITH_SELINUX
+ {"selinux-user", required_argument, NULL, 'Z'},
+#endif /* WITH_SELINUX */
+ {NULL, 0, NULL, '\0'}
+ };
+ while ((c = getopt_long (argc, argv,
+ "abc:d:e:f:g:G:hl:Lmop:rR:s:u:UP:"
+#ifdef ENABLE_SUBIDS
+ "v:w:V:W:"
+#endif /* ENABLE_SUBIDS */
+#ifdef WITH_SELINUX
+ "Z:"
+#endif /* WITH_SELINUX */
+ , long_options, NULL)) != -1) {
+ switch (c) {
+ case 'a':
+ aflg = true;
+ break;
+ case 'b':
+ allow_bad_names = true;
+ break;
+ case 'c':
+ if (!VALID (optarg)) {
+ fprintf (stderr,
+ _("%s: invalid field '%s'\n"),
+ Prog, optarg);
+ exit (E_BAD_ARG);
+ }
+ user_newcomment = optarg;
+ cflg = true;
+ break;
+ case 'd':
+ if (!VALID (optarg)) {
+ fprintf (stderr,
+ _("%s: invalid field '%s'\n"),
+ Prog, optarg);
+ exit (E_BAD_ARG);
+ }
+ dflg = true;
+ user_newhome = optarg;
+ if (user_newhome[0] != '/') {
+ fprintf (stderr,
+ _("%s: homedir must be an absolute path\n"),
+ Prog);
+ exit (E_BAD_ARG);
+ }
+ break;
+ case 'e':
+ user_newexpire = strtoday (optarg);
+ if (user_newexpire < -1) {
+ fprintf (stderr,
+ _("%s: invalid date '%s'\n"),
+ Prog, optarg);
+ exit (E_BAD_ARG);
+ }
+ user_newexpire *= DAY / SCALE;
+ eflg = true;
+ break;
+ case 'f':
+ if ( (getlong (optarg, &user_newinactive) == 0)
+ || (user_newinactive < -1)) {
+ fprintf (stderr,
+ _("%s: invalid numeric argument '%s'\n"),
+ Prog, optarg);
+ exit (E_BAD_ARG);
+ }
+ fflg = true;
+ break;
+ case 'g':
+ grp = getgr_nam_gid (optarg);
+ if (NULL == grp) {
+ fprintf (stderr,
+ _("%s: group '%s' does not exist\n"),
+ Prog, optarg);
+ exit (E_NOTFOUND);
+ }
+ user_newgid = grp->gr_gid;
+ gflg = true;
+ gr_free (grp);
+ break;
+ case 'G':
+ if (get_groups (optarg) != 0) {
+ exit (E_NOTFOUND);
+ }
+ Gflg = true;
+ break;
+ case 'h':
+ usage (E_SUCCESS);
+ /*@notreached@*/break;
+ case 'l':
+ if (!is_valid_user_name (optarg)) {
+ fprintf (stderr,
+ _("%s: invalid user name '%s': use --badname to ignore\n"),
+ Prog, optarg);
+ exit (E_BAD_ARG);
+ }
+ lflg = true;
+ user_newname = optarg;
+ break;
+ case 'L':
+ Lflg = true;
+ break;
+ case 'm':
+ mflg = true;
+ break;
+ case 'o':
+ oflg = true;
+ break;
+ case 'p':
+ user_pass = optarg;
+ pflg = true;
+ break;
+ case 'r':
+ rflg = true;
+ break;
+ case 'R': /* no-op, handled in process_root_flag () */
+ break;
+ case 'P': /* no-op, handled in process_prefix_flag () */
+ break;
+ case 's':
+ if ( ( !VALID (optarg) )
+ || ( ('\0' != optarg[0])
+ && ('/' != optarg[0])
+ && ('*' != optarg[0]) )) {
+ fprintf (stderr,
+ _("%s: invalid shell '%s'\n"),
+ Prog, optarg);
+ exit (E_BAD_ARG);
+ }
+ if ( '\0' != optarg[0]
+ && '*' != optarg[0]
+ && strcmp(optarg, "/sbin/nologin") != 0
+ && ( stat(optarg, &st) != 0
+ || S_ISDIR(st.st_mode)
+ || access(optarg, X_OK) != 0)) {
+ fprintf (stderr,
+ _("%s: Warning: missing or non-executable shell '%s'\n"),
+ Prog, optarg);
+ }
+ user_newshell = optarg;
+ sflg = true;
+ break;
+ case 'u':
+ if ( (get_uid (optarg, &user_newid) ==0)
+ || (user_newid == (uid_t)-1)) {
+ fprintf (stderr,
+ _("%s: invalid user ID '%s'\n"),
+ Prog, optarg);
+ exit (E_BAD_ARG);
+ }
+ uflg = true;
+ break;
+ case 'U':
+ Uflg = true;
+ break;
+#ifdef ENABLE_SUBIDS
+ case 'v':
+ if (prepend_range (optarg, &add_sub_uids) == 0) {
+ fprintf (stderr,
+ _("%s: invalid subordinate uid range '%s'\n"),
+ Prog, optarg);
+ exit(E_BAD_ARG);
+ }
+ vflg = true;
+ break;
+ case 'V':
+ if (prepend_range (optarg, &del_sub_uids) == 0) {
+ fprintf (stderr,
+ _("%s: invalid subordinate uid range '%s'\n"),
+ Prog, optarg);
+ exit(E_BAD_ARG);
+ }
+ Vflg = true;
+ break;
+ case 'w':
+ if (prepend_range (optarg, &add_sub_gids) == 0) {
+ fprintf (stderr,
+ _("%s: invalid subordinate gid range '%s'\n"),
+ Prog, optarg);
+ exit(E_BAD_ARG);
+ }
+ wflg = true;
+ break;
+ case 'W':
+ if (prepend_range (optarg, &del_sub_gids) == 0) {
+ fprintf (stderr,
+ _("%s: invalid subordinate gid range '%s'\n"),
+ Prog, optarg);
+ exit(E_BAD_ARG);
+ }
+ Wflg = true;
+ break;
+#endif /* ENABLE_SUBIDS */
+#ifdef WITH_SELINUX
+ case 'Z':
+ if (prefix[0]) {
+ fprintf (stderr,
+ _("%s: -Z cannot be used with --prefix\n"),
+ Prog);
+ exit (E_BAD_ARG);
+ }
+ if (is_selinux_enabled () > 0) {
+ user_selinux = optarg;
+ Zflg = true;
+ } else {
+ fprintf (stderr,
+ _("%s: -Z requires SELinux enabled kernel\n"),
+ Prog);
+ exit (E_BAD_ARG);
+ }
+ break;
+#endif /* WITH_SELINUX */
+ default:
+ usage (E_USAGE);
+ }
+ anyflag = true;
+ }
+ }
+
+ if (optind != argc - 1) {
+ usage (E_USAGE);
+ }
+
+ user_name = argv[argc - 1];
+
+ {
+ const struct passwd *pwd;
+ /* local, no need for xgetpwnam */
+ pwd = prefix_getpwnam (user_name);
+ if (NULL == pwd) {
+ fprintf (stderr,
+ _("%s: user '%s' does not exist\n"),
+ Prog, user_name);
+ exit (E_NOTFOUND);
+ }
+
+ user_id = pwd->pw_uid;
+ user_gid = pwd->pw_gid;
+ user_comment = xstrdup (pwd->pw_gecos);
+ user_home = xstrdup (pwd->pw_dir);
+ user_shell = xstrdup (pwd->pw_shell);
+ }
+
+ /* user_newname, user_newid, user_newgid can be used even when the
+ * options where not specified. */
+ if (!lflg) {
+ user_newname = user_name;
+ }
+ if (!uflg) {
+ user_newid = user_id;
+ }
+ if (!gflg) {
+ user_newgid = user_gid;
+ }
+ if (prefix[0]) {
+ size_t len = strlen(prefix) + strlen(user_home) + 2;
+ int wlen;
+ prefix_user_home = xmalloc(len);
+ wlen = snprintf(prefix_user_home, len, "%s/%s", prefix, user_home);
+ assert (wlen == (int) len -1);
+ if (user_newhome) {
+ len = strlen(prefix) + strlen(user_newhome) + 2;
+ prefix_user_newhome = xmalloc(len);
+ wlen = snprintf(prefix_user_newhome, len, "%s/%s", prefix, user_newhome);
+ assert (wlen == (int) len -1);
+ }
+
+ }
+ else {
+ prefix_user_home = user_home;
+ prefix_user_newhome = user_newhome;
+ }
+
+#ifdef USE_NIS
+ /*
+ * Now make sure it isn't an NIS user.
+ */
+ if (__ispwNIS ()) {
+ char *nis_domain;
+ char *nis_master;
+
+ fprintf (stderr,
+ _("%s: user %s is a NIS user\n"),
+ Prog, user_name);
+
+ if ( !yp_get_default_domain (&nis_domain)
+ && !yp_master (nis_domain, "passwd.byname", &nis_master)) {
+ fprintf (stderr,
+ _("%s: %s is the NIS master\n"),
+ Prog, nis_master);
+ }
+ exit (E_NOTFOUND);
+ }
+#endif
+
+ {
+ const struct spwd *spwd = NULL;
+ /* local, no need for xgetspnam */
+ if (is_shadow_pwd && ((spwd = prefix_getspnam (user_name)) != NULL)) {
+ user_expire = spwd->sp_expire;
+ user_inactive = spwd->sp_inact;
+ }
+ }
+
+ if (!anyflag) {
+ fprintf (stderr, _("%s: no options\n"), Prog);
+ usage (E_USAGE);
+ }
+
+ if (aflg && (!Gflg)) {
+ fprintf (stderr,
+ _("%s: %s flag is only allowed with the %s flag\n"),
+ Prog, "-a", "-G");
+ usage (E_USAGE);
+ }
+
+ if (rflg && (!Gflg)) {
+ fprintf (stderr,
+ _("%s: %s flag is only allowed with the %s flag\n"),
+ Prog, "-r", "-G");
+ usage (E_USAGE);
+ }
+
+ if (rflg && aflg) {
+ fprintf (stderr,
+ _("%s: %s and %s are mutually exclusive flags\n"),
+ Prog, "-r", "-a");
+ usage (E_USAGE);
+ }
+
+ if ((Lflg && (pflg || Uflg)) || (pflg && Uflg)) {
+ fprintf (stderr,
+ _("%s: the -L, -p, and -U flags are exclusive\n"),
+ Prog);
+ usage (E_USAGE);
+ }
+
+ if (oflg && !uflg) {
+ fprintf (stderr,
+ _("%s: %s flag is only allowed with the %s flag\n"),
+ Prog, "-o", "-u");
+ usage (E_USAGE);
+ }
+
+ if (mflg && !dflg) {
+ fprintf (stderr,
+ _("%s: %s flag is only allowed with the %s flag\n"),
+ Prog, "-m", "-d");
+ usage (E_USAGE);
+ }
+
+ if (user_newid == user_id) {
+ uflg = false;
+ oflg = false;
+ }
+ if (user_newgid == user_gid) {
+ gflg = false;
+ }
+ if ( (NULL != user_newshell)
+ && (strcmp (user_newshell, user_shell) == 0)) {
+ sflg = false;
+ }
+ if (strcmp (user_newname, user_name) == 0) {
+ lflg = false;
+ }
+ if (user_newinactive == user_inactive) {
+ fflg = false;
+ }
+ if (user_newexpire == user_expire) {
+ eflg = false;
+ }
+ if ( (NULL != user_newhome)
+ && (strcmp (user_newhome, user_home) == 0)) {
+ dflg = false;
+ mflg = false;
+ }
+ if ( (NULL != user_newcomment)
+ && (strcmp (user_newcomment, user_comment) == 0)) {
+ cflg = false;
+ }
+
+ if (!(Uflg || uflg || sflg || pflg || mflg || Lflg ||
+ lflg || Gflg || gflg || fflg || eflg || dflg || cflg
+#ifdef ENABLE_SUBIDS
+ || vflg || Vflg || wflg || Wflg
+#endif /* ENABLE_SUBIDS */
+#ifdef WITH_SELINUX
+ || Zflg
+#endif /* WITH_SELINUX */
+ )) {
+ fprintf (stdout, _("%s: no changes\n"), Prog);
+ exit (E_SUCCESS);
+ }
+
+ if (!is_shadow_pwd && (eflg || fflg)) {
+ fprintf (stderr,
+ _("%s: shadow passwords required for -e and -f\n"),
+ Prog);
+ exit (E_USAGE);
+ }
+
+ /* local, no need for xgetpwnam */
+ if (lflg && (prefix_getpwnam (user_newname) != NULL)) {
+ fprintf (stderr,
+ _("%s: user '%s' already exists\n"),
+ Prog, user_newname);
+ exit (E_NAME_IN_USE);
+ }
+
+ /* local, no need for xgetpwuid */
+ if (uflg && !oflg && (prefix_getpwuid (user_newid) != NULL)) {
+ fprintf (stderr,
+ _("%s: UID '%lu' already exists\n"),
+ Prog, (unsigned long) user_newid);
+ exit (E_UID_IN_USE);
+ }
+
+#ifdef ENABLE_SUBIDS
+ if ( (vflg || Vflg)
+ && !is_sub_uid) {
+ fprintf (stderr,
+ _("%s: %s does not exist, you cannot use the flags %s or %s\n"),
+ Prog, sub_uid_dbname (), "-v", "-V");
+ exit (E_USAGE);
+ }
+
+ if ( (wflg || Wflg)
+ && !is_sub_gid) {
+ fprintf (stderr,
+ _("%s: %s does not exist, you cannot use the flags %s or %s\n"),
+ Prog, sub_gid_dbname (), "-w", "-W");
+ exit (E_USAGE);
+ }
+#endif /* ENABLE_SUBIDS */
+}
+
+/*
+ * close_files - close all of the files that were opened
+ *
+ * close_files() closes all of the files that were opened for this new
+ * user. This causes any modified entries to be written out.
+ */
+static void close_files (void)
+{
+ if (pw_close () == 0) {
+ fprintf (stderr,
+ _("%s: failure while writing changes to %s\n"),
+ Prog, pw_dbname ());
+ SYSLOG ((LOG_ERR, "failure while writing changes to %s", pw_dbname ()));
+ fail_exit (E_PW_UPDATE);
+ }
+ if (is_shadow_pwd && (spw_close () == 0)) {
+ fprintf (stderr,
+ _("%s: failure while writing changes to %s\n"),
+ Prog, spw_dbname ());
+ SYSLOG ((LOG_ERR,
+ "failure while writing changes to %s",
+ spw_dbname ()));
+ fail_exit (E_PW_UPDATE);
+ }
+
+ if (Gflg || lflg) {
+ if (gr_close () == 0) {
+ fprintf (stderr,
+ _("%s: failure while writing changes to %s\n"),
+ Prog, gr_dbname ());
+ SYSLOG ((LOG_ERR,
+ "failure while writing changes to %s",
+ gr_dbname ()));
+ fail_exit (E_GRP_UPDATE);
+ }
+#ifdef SHADOWGRP
+ if (is_shadow_grp) {
+ if (sgr_close () == 0) {
+ fprintf (stderr,
+ _("%s: failure while writing changes to %s\n"),
+ Prog, sgr_dbname ());
+ SYSLOG ((LOG_ERR,
+ "failure while writing changes to %s",
+ sgr_dbname ()));
+ fail_exit (E_GRP_UPDATE);
+ }
+ }
+#endif
+#ifdef SHADOWGRP
+ if (is_shadow_grp) {
+ if (sgr_unlock () == 0) {
+ fprintf (stderr,
+ _("%s: failed to unlock %s\n"),
+ Prog, sgr_dbname ());
+ SYSLOG ((LOG_ERR,
+ "failed to unlock %s",
+ sgr_dbname ()));
+ /* continue */
+ }
+ }
+#endif
+ if (gr_unlock () == 0) {
+ fprintf (stderr,
+ _("%s: failed to unlock %s\n"),
+ Prog, gr_dbname ());
+ SYSLOG ((LOG_ERR,
+ "failed to unlock %s",
+ gr_dbname ()));
+ /* continue */
+ }
+ }
+
+ if (is_shadow_pwd) {
+ if (spw_unlock () == 0) {
+ fprintf (stderr,
+ _("%s: failed to unlock %s\n"),
+ Prog, spw_dbname ());
+ SYSLOG ((LOG_ERR,
+ "failed to unlock %s",
+ spw_dbname ()));
+ /* continue */
+ }
+ }
+ if (pw_unlock () == 0) {
+ fprintf (stderr,
+ _("%s: failed to unlock %s\n"),
+ Prog, pw_dbname ());
+ SYSLOG ((LOG_ERR, "failed to unlock %s", pw_dbname ()));
+ /* continue */
+ }
+
+ pw_locked = false;
+ spw_locked = false;
+ gr_locked = false;
+#ifdef SHADOWGRP
+ sgr_locked = false;
+#endif
+
+#ifdef ENABLE_SUBIDS
+ if (vflg || Vflg) {
+ if (sub_uid_close () == 0) {
+ fprintf (stderr, _("%s: failure while writing changes to %s\n"), Prog, sub_uid_dbname ());
+ SYSLOG ((LOG_ERR, "failure while writing changes to %s", sub_uid_dbname ()));
+ fail_exit (E_SUB_UID_UPDATE);
+ }
+ if (sub_uid_unlock () == 0) {
+ fprintf (stderr, _("%s: failed to unlock %s\n"), Prog, sub_uid_dbname ());
+ SYSLOG ((LOG_ERR, "failed to unlock %s", sub_uid_dbname ()));
+ /* continue */
+ }
+ sub_uid_locked = false;
+ }
+ if (wflg || Wflg) {
+ if (sub_gid_close () == 0) {
+ fprintf (stderr, _("%s: failure while writing changes to %s\n"), Prog, sub_gid_dbname ());
+ SYSLOG ((LOG_ERR, "failure while writing changes to %s", sub_gid_dbname ()));
+ fail_exit (E_SUB_GID_UPDATE);
+ }
+ if (sub_gid_unlock () == 0) {
+ fprintf (stderr, _("%s: failed to unlock %s\n"), Prog, sub_gid_dbname ());
+ SYSLOG ((LOG_ERR, "failed to unlock %s", sub_gid_dbname ()));
+ /* continue */
+ }
+ sub_gid_locked = false;
+ }
+#endif /* ENABLE_SUBIDS */
+
+ /*
+ * Close the DBM and/or flat files
+ */
+ endpwent ();
+ endspent ();
+ endgrent ();
+#ifdef SHADOWGRP
+ endsgent ();
+#endif
+}
+
+/*
+ * open_files - lock and open the password files
+ *
+ * open_files() opens the two password files.
+ */
+static void open_files (void)
+{
+ if (pw_lock () == 0) {
+ fprintf (stderr,
+ _("%s: cannot lock %s; try again later.\n"),
+ Prog, pw_dbname ());
+ fail_exit (E_PW_UPDATE);
+ }
+ pw_locked = true;
+ if (pw_open (O_CREAT | O_RDWR) == 0) {
+ fprintf (stderr,
+ _("%s: cannot open %s\n"),
+ Prog, pw_dbname ());
+ fail_exit (E_PW_UPDATE);
+ }
+ if (is_shadow_pwd && (spw_lock () == 0)) {
+ fprintf (stderr,
+ _("%s: cannot lock %s; try again later.\n"),
+ Prog, spw_dbname ());
+ fail_exit (E_PW_UPDATE);
+ }
+ spw_locked = true;
+ if (is_shadow_pwd && (spw_open (O_CREAT | O_RDWR) == 0)) {
+ fprintf (stderr,
+ _("%s: cannot open %s\n"),
+ Prog, spw_dbname ());
+ fail_exit (E_PW_UPDATE);
+ }
+
+ if (Gflg || lflg) {
+ /*
+ * Lock and open the group file. This will load all of the
+ * group entries.
+ */
+ if (gr_lock () == 0) {
+ fprintf (stderr,
+ _("%s: cannot lock %s; try again later.\n"),
+ Prog, gr_dbname ());
+ fail_exit (E_GRP_UPDATE);
+ }
+ gr_locked = true;
+ if (gr_open (O_CREAT | O_RDWR) == 0) {
+ fprintf (stderr,
+ _("%s: cannot open %s\n"),
+ Prog, gr_dbname ());
+ fail_exit (E_GRP_UPDATE);
+ }
+#ifdef SHADOWGRP
+ if (is_shadow_grp && (sgr_lock () == 0)) {
+ fprintf (stderr,
+ _("%s: cannot lock %s; try again later.\n"),
+ Prog, sgr_dbname ());
+ fail_exit (E_GRP_UPDATE);
+ }
+ sgr_locked = true;
+ if (is_shadow_grp && (sgr_open (O_CREAT | O_RDWR) == 0)) {
+ fprintf (stderr,
+ _("%s: cannot open %s\n"),
+ Prog, sgr_dbname ());
+ fail_exit (E_GRP_UPDATE);
+ }
+#endif
+ }
+#ifdef ENABLE_SUBIDS
+ if (vflg || Vflg) {
+ if (sub_uid_lock () == 0) {
+ fprintf (stderr,
+ _("%s: cannot lock %s; try again later.\n"),
+ Prog, sub_uid_dbname ());
+ fail_exit (E_SUB_UID_UPDATE);
+ }
+ sub_uid_locked = true;
+ if (sub_uid_open (O_CREAT | O_RDWR) == 0) {
+ fprintf (stderr,
+ _("%s: cannot open %s\n"),
+ Prog, sub_uid_dbname ());
+ fail_exit (E_SUB_UID_UPDATE);
+ }
+ }
+ if (wflg || Wflg) {
+ if (sub_gid_lock () == 0) {
+ fprintf (stderr,
+ _("%s: cannot lock %s; try again later.\n"),
+ Prog, sub_gid_dbname ());
+ fail_exit (E_SUB_GID_UPDATE);
+ }
+ sub_gid_locked = true;
+ if (sub_gid_open (O_CREAT | O_RDWR) == 0) {
+ fprintf (stderr,
+ _("%s: cannot open %s\n"),
+ Prog, sub_gid_dbname ());
+ fail_exit (E_SUB_GID_UPDATE);
+ }
+ }
+#endif /* ENABLE_SUBIDS */
+}
+
+/*
+ * usr_update - create the user entries
+ *
+ * usr_update() creates the password file entries for this user and
+ * will update the group entries if required.
+ */
+static void usr_update (void)
+{
+ struct passwd pwent;
+ const struct passwd *pwd;
+
+ struct spwd spent;
+ const struct spwd *spwd = NULL;
+
+ /*
+ * Locate the entry in /etc/passwd, which MUST exist.
+ */
+ pwd = pw_locate (user_name);
+ if (NULL == pwd) {
+ fprintf (stderr,
+ _("%s: user '%s' does not exist in %s\n"),
+ Prog, user_name, pw_dbname ());
+ fail_exit (E_NOTFOUND);
+ }
+ pwent = *pwd;
+ new_pwent (&pwent);
+
+
+ /* If the shadow file does not exist, it won't be created */
+ if (is_shadow_pwd) {
+ spwd = spw_locate (user_name);
+ if (NULL != spwd) {
+ /* Update the shadow entry if it exists */
+ spent = *spwd;
+ new_spent (&spent);
+ } else if ( ( pflg
+ && (strcmp (pwent.pw_passwd, SHADOW_PASSWD_STRING) == 0))
+ || eflg || fflg) {
+ /* In some cases, we force the creation of a
+ * shadow entry:
+ * + new password requested and passwd indicates
+ * a shadowed password
+ * + aging information is requested
+ */
+ memset (&spent, 0, sizeof spent);
+ spent.sp_namp = user_name;
+
+ /* The user explicitly asked for a shadow feature.
+ * Enable shadowed passwords for this new account.
+ */
+ spent.sp_pwdp = xstrdup (pwent.pw_passwd);
+ pwent.pw_passwd = xstrdup (SHADOW_PASSWD_STRING);
+
+ spent.sp_lstchg = (long) gettime () / SCALE;
+ if (0 == spent.sp_lstchg) {
+ /* Better disable aging than
+ * requiring a password change */
+ spent.sp_lstchg = -1;
+ }
+ spent.sp_min = getdef_num ("PASS_MIN_DAYS", -1);
+ spent.sp_max = getdef_num ("PASS_MAX_DAYS", -1);
+ spent.sp_warn = getdef_num ("PASS_WARN_AGE", -1);
+ spent.sp_inact = -1;
+ spent.sp_expire = -1;
+ spent.sp_flag = SHADOW_SP_FLAG_UNSET;
+ new_spent (&spent);
+ spwd = &spent; /* entry needs to be committed */
+ }
+ }
+
+ if (lflg || uflg || gflg || cflg || dflg || sflg || pflg
+ || Lflg || Uflg) {
+ if (pw_update (&pwent) == 0) {
+ fprintf (stderr,
+ _("%s: failed to prepare the new %s entry '%s'\n"),
+ Prog, pw_dbname (), pwent.pw_name);
+ fail_exit (E_PW_UPDATE);
+ }
+ if (lflg && (pw_remove (user_name) == 0)) {
+ fprintf (stderr,
+ _("%s: cannot remove entry '%s' from %s\n"),
+ Prog, user_name, pw_dbname ());
+ fail_exit (E_PW_UPDATE);
+ }
+ }
+ if ((NULL != spwd) && (lflg || eflg || fflg || pflg || Lflg || Uflg)) {
+ if (spw_update (&spent) == 0) {
+ fprintf (stderr,
+ _("%s: failed to prepare the new %s entry '%s'\n"),
+ Prog, spw_dbname (), spent.sp_namp);
+ fail_exit (E_PW_UPDATE);
+ }
+ if (lflg && (spw_remove (user_name) == 0)) {
+ fprintf (stderr,
+ _("%s: cannot remove entry '%s' from %s\n"),
+ Prog, user_name, spw_dbname ());
+ fail_exit (E_PW_UPDATE);
+ }
+ }
+}
+
+/*
+ * move_home - move the user's home directory
+ *
+ * move_home() moves the user's home directory to a new location. The
+ * files will be copied if the directory cannot simply be renamed.
+ */
+static void move_home (void)
+{
+ struct stat sb;
+
+ if (access (prefix_user_newhome, F_OK) == 0) {
+ /*
+ * If the new home directory already exist, the user
+ * should not use -m.
+ */
+ fprintf (stderr,
+ _("%s: directory %s exists\n"),
+ Prog, user_newhome);
+ fail_exit (E_HOMEDIR);
+ }
+
+ if (stat (prefix_user_home, &sb) == 0) {
+ /*
+ * Don't try to move it if it is not a directory
+ * (but /dev/null for example). --marekm
+ */
+ if (!S_ISDIR (sb.st_mode)) {
+ fprintf (stderr,
+ _("%s: The previous home directory (%s) was "
+ "not a directory. It is not removed and no "
+ "home directories are created.\n"),
+ Prog, user_home);
+ fail_exit (E_HOMEDIR);
+ }
+
+#ifdef WITH_AUDIT
+ if (uflg || gflg) {
+ audit_logger (AUDIT_USER_CHAUTHTOK, Prog,
+ "changing home directory owner",
+ user_newname, (unsigned int) user_newid, 1);
+ }
+#endif
+
+ if (rename (prefix_user_home, prefix_user_newhome) == 0) {
+ /* FIXME: rename above may have broken symlinks
+ * pointing to the user's home directory
+ * with an absolute path. */
+ if (chown_tree (prefix_user_newhome,
+ user_id, uflg ? user_newid : (uid_t)-1,
+ user_gid, gflg ? user_newgid : (gid_t)-1) != 0) {
+ fprintf (stderr,
+ _("%s: Failed to change ownership of the home directory"),
+ Prog);
+ fail_exit (E_HOMEDIR);
+ }
+#ifdef WITH_AUDIT
+ audit_logger (AUDIT_USER_CHAUTHTOK, Prog,
+ "moving home directory",
+ user_newname, (unsigned int) user_newid,
+ 1);
+#endif
+ return;
+ } else {
+ if (EXDEV == errno) {
+#ifdef WITH_BTRFS
+ if (btrfs_is_subvolume (prefix_user_home) > 0) {
+ fprintf (stderr,
+ _("%s: error: cannot move subvolume from %s to %s - different device\n"),
+ Prog, prefix_user_home, prefix_user_newhome);
+ fail_exit (E_HOMEDIR);
+ }
+#endif
+
+ if (copy_tree (prefix_user_home, prefix_user_newhome, true,
+ true,
+ user_id,
+ uflg ? user_newid : (uid_t)-1,
+ user_gid,
+ gflg ? user_newgid : (gid_t)-1) == 0) {
+ if (remove_tree (prefix_user_home, true) != 0) {
+ fprintf (stderr,
+ _("%s: warning: failed to completely remove old home directory %s"),
+ Prog, prefix_user_home);
+ }
+#ifdef WITH_AUDIT
+ audit_logger (AUDIT_USER_CHAUTHTOK,
+ Prog,
+ "moving home directory",
+ user_newname,
+ (unsigned int) user_newid,
+ 1);
+#endif
+ return;
+ }
+
+ (void) remove_tree (prefix_user_newhome, true);
+ }
+ fprintf (stderr,
+ _("%s: cannot rename directory %s to %s\n"),
+ Prog, prefix_user_home, prefix_user_newhome);
+ fail_exit (E_HOMEDIR);
+ }
+ } else {
+ fprintf (stderr,
+ _("%s: The previous home directory (%s) does not "
+ "exist or is inaccessible. Move cannot be completed.\n"),
+ Prog, prefix_user_home);
+ }
+}
+
+/*
+ * update_lastlog - update the lastlog file
+ *
+ * Relocate the "lastlog" entries for the user. The old entry is
+ * left alone in case the UID was shared. It doesn't hurt anything
+ * to just leave it be.
+ */
+static void update_lastlog (void)
+{
+ struct lastlog ll;
+ int fd;
+ off_t off_uid = (off_t) user_id * sizeof ll;
+ off_t off_newuid = (off_t) user_newid * sizeof ll;
+ uid_t max_uid;
+
+ if (access (LASTLOG_FILE, F_OK) != 0) {
+ return;
+ }
+
+ max_uid = (uid_t) getdef_ulong ("LASTLOG_UID_MAX", 0xFFFFFFFFUL);
+ if (user_newid > max_uid) {
+ /* do not touch lastlog for large uids */
+ return;
+ }
+
+ fd = open (LASTLOG_FILE, O_RDWR);
+
+ if (-1 == fd) {
+ fprintf (stderr,
+ _("%s: failed to copy the lastlog entry of user %lu to user %lu: %s\n"),
+ Prog, (unsigned long) user_id, (unsigned long) user_newid, strerror (errno));
+ return;
+ }
+
+ if ( (lseek (fd, off_uid, SEEK_SET) == off_uid)
+ && (read (fd, &ll, sizeof ll) == (ssize_t) sizeof ll)) {
+ /* Copy the old entry to its new location */
+ if ( (lseek (fd, off_newuid, SEEK_SET) != off_newuid)
+ || (write (fd, &ll, sizeof ll) != (ssize_t) sizeof ll)
+ || (fsync (fd) != 0)) {
+ fprintf (stderr,
+ _("%s: failed to copy the lastlog entry of user %lu to user %lu: %s\n"),
+ Prog, (unsigned long) user_id, (unsigned long) user_newid, strerror (errno));
+ }
+ } else {
+ /* Assume lseek or read failed because there is
+ * no entry for the old UID */
+
+ /* Check if the new UID already has an entry */
+ if ( (lseek (fd, off_newuid, SEEK_SET) == off_newuid)
+ && (read (fd, &ll, sizeof ll) == (ssize_t) sizeof ll)) {
+ /* Reset the new uid's lastlog entry */
+ memzero (&ll, sizeof (ll));
+ if ( (lseek (fd, off_newuid, SEEK_SET) != off_newuid)
+ || (write (fd, &ll, sizeof ll) != (ssize_t) sizeof ll)
+ || (fsync (fd) != 0)) {
+ fprintf (stderr,
+ _("%s: failed to copy the lastlog entry of user %lu to user %lu: %s\n"),
+ Prog, (unsigned long) user_id, (unsigned long) user_newid, strerror (errno));
+ }
+ }
+ }
+
+ (void) close (fd);
+}
+
+/*
+ * update_faillog - update the faillog file
+ *
+ * Relocate the "faillog" entries for the user. The old entry is
+ * left alone in case the UID was shared. It doesn't hurt anything
+ * to just leave it be.
+ */
+static void update_faillog (void)
+{
+ struct faillog fl;
+ int fd;
+ off_t off_uid = (off_t) user_id * sizeof fl;
+ off_t off_newuid = (off_t) user_newid * sizeof fl;
+
+ if (access (FAILLOG_FILE, F_OK) != 0) {
+ return;
+ }
+
+ fd = open (FAILLOG_FILE, O_RDWR);
+
+ if (-1 == fd) {
+ fprintf (stderr,
+ _("%s: failed to copy the faillog entry of user %lu to user %lu: %s\n"),
+ Prog, (unsigned long) user_id, (unsigned long) user_newid, strerror (errno));
+ return;
+ }
+
+ if ( (lseek (fd, off_uid, SEEK_SET) == off_uid)
+ && (read (fd, (char *) &fl, sizeof fl) == (ssize_t) sizeof fl)) {
+ /* Copy the old entry to its new location */
+ if ( (lseek (fd, off_newuid, SEEK_SET) != off_newuid)
+ || (write (fd, &fl, sizeof fl) != (ssize_t) sizeof fl)
+ || (fsync (fd) != 0)) {
+ fprintf (stderr,
+ _("%s: failed to copy the faillog entry of user %lu to user %lu: %s\n"),
+ Prog, (unsigned long) user_id, (unsigned long) user_newid, strerror (errno));
+ }
+ } else {
+ /* Assume lseek or read failed because there is
+ * no entry for the old UID */
+
+ /* Check if the new UID already has an entry */
+ if ( (lseek (fd, off_newuid, SEEK_SET) == off_newuid)
+ && (read (fd, &fl, sizeof fl) == (ssize_t) sizeof fl)) {
+ /* Reset the new uid's faillog entry */
+ memzero (&fl, sizeof (fl));
+ if ( (lseek (fd, off_newuid, SEEK_SET) != off_newuid)
+ || (write (fd, &fl, sizeof fl) != (ssize_t) sizeof fl)) {
+ fprintf (stderr,
+ _("%s: failed to copy the faillog entry of user %lu to user %lu: %s\n"),
+ Prog, (unsigned long) user_id, (unsigned long) user_newid, strerror (errno));
+ }
+ }
+ }
+
+ (void) close (fd);
+}
+
+#ifndef NO_MOVE_MAILBOX
+/*
+ * This is the new and improved code to carefully chown/rename the user's
+ * mailbox. Maybe I am too paranoid but the mail spool dir sometimes
+ * happens to be mode 1777 (this makes mail user agents work without
+ * being setgid mail, but is NOT recommended; they all should be fixed
+ * to use movemail). --marekm
+ */
+static void move_mailbox (void)
+{
+ const char *maildir;
+ char* mailfile;
+ char* newmailfile;
+ int fd;
+ struct stat st;
+ size_t len;
+
+ maildir = getdef_str ("MAIL_DIR");
+#ifdef MAIL_SPOOL_DIR
+ if ((NULL == maildir) && (getdef_str ("MAIL_FILE") == NULL)) {
+ maildir = MAIL_SPOOL_DIR;
+ }
+#endif
+ if (NULL == maildir) {
+ return;
+ }
+ len = strlen (prefix) + strlen (maildir) + strlen (user_name) + 2;
+ mailfile = alloca (len);
+
+ /*
+ * O_NONBLOCK is to make sure open won't hang on mandatory locks.
+ * We do fstat/fchown to make sure there are no races (someone
+ * replacing /var/spool/mail/luser with a hard link to /etc/passwd
+ * between stat and chown). --marekm
+ */
+ if (prefix[0]) {
+ (void) snprintf (mailfile, len, "%s/%s/%s",
+ prefix, maildir, user_name);
+ }
+ else {
+ (void) snprintf (mailfile, len, "%s/%s",
+ maildir, user_name);
+ }
+ mailfile[len-1] = '\0';
+
+ fd = open (mailfile, O_RDONLY | O_NONBLOCK, 0);
+ if (fd < 0) {
+ /* no need for warnings if the mailbox doesn't exist */
+ if (errno != ENOENT) {
+ perror (mailfile);
+ }
+ return;
+ }
+ if (fstat (fd, &st) < 0) {
+ perror ("fstat");
+ (void) close (fd);
+ return;
+ }
+ if (st.st_uid != user_id) {
+ /* better leave it alone */
+ fprintf (stderr, _("%s: warning: %s not owned by %s\n"),
+ Prog, mailfile, user_name);
+ (void) close (fd);
+ return;
+ }
+ if (uflg) {
+ if (fchown (fd, user_newid, (gid_t) -1) < 0) {
+ perror (_("failed to change mailbox owner"));
+ }
+#ifdef WITH_AUDIT
+ else {
+ audit_logger (AUDIT_USER_CHAUTHTOK, Prog,
+ "changing mail file owner",
+ user_newname, (unsigned int) user_newid, 1);
+ }
+#endif
+ }
+
+ (void) close (fd);
+
+ if (lflg) {
+ len = strlen (prefix) + strlen (maildir) + strlen (user_newname) + 2;
+ newmailfile = alloca(len);
+ if (prefix[0]) {
+ (void) snprintf (newmailfile, len, "%s/%s/%s",
+ prefix, maildir, user_newname);
+ }
+ else {
+ (void) snprintf (newmailfile, len, "%s/%s",
+ maildir, user_newname);
+ }
+ newmailfile[len - 1] = '\0';
+ if ( (link (mailfile, newmailfile) != 0)
+ || (unlink (mailfile) != 0)) {
+ perror (_("failed to rename mailbox"));
+ }
+#ifdef WITH_AUDIT
+ else {
+ audit_logger (AUDIT_USER_CHAUTHTOK, Prog,
+ "changing mail file name",
+ user_newname, (unsigned int) user_newid, 1);
+ }
+#endif
+ }
+}
+#endif
+
+/*
+ * main - usermod command
+ */
+int main (int argc, char **argv)
+{
+#ifdef ACCT_TOOLS_SETUID
+#ifdef USE_PAM
+ pam_handle_t *pamh = NULL;
+ int retval;
+#endif /* USE_PAM */
+#endif /* ACCT_TOOLS_SETUID */
+
+ /*
+ * Get my name so that I can use it to report errors.
+ */
+ Prog = Basename (argv[0]);
+ log_set_progname(Prog);
+ log_set_logfd(stderr);
+
+ (void) setlocale (LC_ALL, "");
+ (void) bindtextdomain (PACKAGE, LOCALEDIR);
+ (void) textdomain (PACKAGE);
+
+ process_root_flag ("-R", argc, argv);
+ prefix = process_prefix_flag ("-P", argc, argv);
+
+ OPENLOG ("usermod");
+#ifdef WITH_AUDIT
+ audit_help_open ();
+#endif
+
+ sys_ngroups = sysconf (_SC_NGROUPS_MAX);
+ user_groups = (char **) malloc (sizeof (char *) * (1 + sys_ngroups));
+ user_groups[0] = (char *) 0;
+
+ is_shadow_pwd = spw_file_present ();
+#ifdef SHADOWGRP
+ is_shadow_grp = sgr_file_present ();
+#endif
+#ifdef ENABLE_SUBIDS
+ is_sub_uid = sub_uid_file_present ();
+ is_sub_gid = sub_gid_file_present ();
+#endif /* ENABLE_SUBIDS */
+
+ process_flags (argc, argv);
+
+ /*
+ * The home directory, the username and the user's UID should not
+ * be changed while the user is logged in.
+ * Note: no need to check if a prefix is specified...
+ */
+ if ( (prefix[0] == '\0') && (uflg || lflg || dflg
+#ifdef ENABLE_SUBIDS
+ || Vflg || Wflg
+#endif /* ENABLE_SUBIDS */
+ )
+ && (user_busy (user_name, user_id) != 0)) {
+ exit (E_USER_BUSY);
+ }
+
+#ifdef ACCT_TOOLS_SETUID
+#ifdef USE_PAM
+ {
+ struct passwd *pampw;
+ pampw = getpwuid (getuid ()); /* local, no need for xgetpwuid */
+ if (pampw == NULL) {
+ fprintf (stderr,
+ _("%s: Cannot determine your user name.\n"),
+ Prog);
+ exit (1);
+ }
+
+ retval = pam_start ("usermod", pampw->pw_name, &conv, &pamh);
+ }
+
+ if (PAM_SUCCESS == retval) {
+ retval = pam_authenticate (pamh, 0);
+ }
+
+ if (PAM_SUCCESS == retval) {
+ retval = pam_acct_mgmt (pamh, 0);
+ }
+
+ if (PAM_SUCCESS != retval) {
+ fprintf (stderr, _("%s: PAM: %s\n"),
+ Prog, pam_strerror (pamh, retval));
+ SYSLOG((LOG_ERR, "%s", pam_strerror (pamh, retval)));
+ if (NULL != pamh) {
+ (void) pam_end (pamh, retval);
+ }
+ exit (1);
+ }
+ (void) pam_end (pamh, retval);
+#endif /* USE_PAM */
+#endif /* ACCT_TOOLS_SETUID */
+
+#ifdef WITH_TCB
+ if (shadowtcb_set_user (user_name) == SHADOWTCB_FAILURE) {
+ exit (E_PW_UPDATE);
+ }
+#endif
+
+ /*
+ * Do the hard stuff - open the files, change the user entries,
+ * change the home directory, then close and update the files.
+ */
+ open_files ();
+ if ( cflg || dflg || eflg || fflg || gflg || Lflg || lflg || pflg
+ || sflg || uflg || Uflg) {
+ usr_update ();
+ }
+ if (Gflg || lflg) {
+ grp_update ();
+ }
+#ifdef ENABLE_SUBIDS
+ if (Vflg) {
+ struct ulong_range_list_entry *ptr;
+ for (ptr = del_sub_uids; ptr != NULL; ptr = ptr->next) {
+ unsigned long count = ptr->range.last - ptr->range.first + 1;
+ if (sub_uid_remove(user_name, ptr->range.first, count) == 0) {
+ fprintf (stderr,
+ _("%s: failed to remove uid range %lu-%lu from '%s'\n"),
+ Prog, ptr->range.first, ptr->range.last,
+ sub_uid_dbname ());
+ fail_exit (E_SUB_UID_UPDATE);
+ }
+ }
+ }
+ if (vflg) {
+ struct ulong_range_list_entry *ptr;
+ for (ptr = add_sub_uids; ptr != NULL; ptr = ptr->next) {
+ unsigned long count = ptr->range.last - ptr->range.first + 1;
+ if (sub_uid_add(user_name, ptr->range.first, count) == 0) {
+ fprintf (stderr,
+ _("%s: failed to add uid range %lu-%lu to '%s'\n"),
+ Prog, ptr->range.first, ptr->range.last,
+ sub_uid_dbname ());
+ fail_exit (E_SUB_UID_UPDATE);
+ }
+ }
+ }
+ if (Wflg) {
+ struct ulong_range_list_entry *ptr;
+ for (ptr = del_sub_gids; ptr != NULL; ptr = ptr->next) {
+ unsigned long count = ptr->range.last - ptr->range.first + 1;
+ if (sub_gid_remove(user_name, ptr->range.first, count) == 0) {
+ fprintf (stderr,
+ _("%s: failed to remove gid range %lu-%lu from '%s'\n"),
+ Prog, ptr->range.first, ptr->range.last,
+ sub_gid_dbname ());
+ fail_exit (E_SUB_GID_UPDATE);
+ }
+ }
+ }
+ if (wflg) {
+ struct ulong_range_list_entry *ptr;
+ for (ptr = add_sub_gids; ptr != NULL; ptr = ptr->next) {
+ unsigned long count = ptr->range.last - ptr->range.first + 1;
+ if (sub_gid_add(user_name, ptr->range.first, count) == 0) {
+ fprintf (stderr,
+ _("%s: failed to add gid range %lu-%lu to '%s'\n"),
+ Prog, ptr->range.first, ptr->range.last,
+ sub_gid_dbname ());
+ fail_exit (E_SUB_GID_UPDATE);
+ }
+ }
+ }
+#endif /* ENABLE_SUBIDS */
+ close_files ();
+
+#ifdef WITH_TCB
+ if ( (lflg || uflg)
+ && (shadowtcb_move (user_newname, user_newid) == SHADOWTCB_FAILURE) ) {
+ exit (E_PW_UPDATE);
+ }
+#endif
+
+ nscd_flush_cache ("passwd");
+ nscd_flush_cache ("group");
+ sssd_flush_cache (SSSD_DB_PASSWD | SSSD_DB_GROUP);
+
+#ifdef WITH_SELINUX
+ if (Zflg) {
+ if ('\0' != *user_selinux) {
+ if (set_seuser (user_name, user_selinux) != 0) {
+ fprintf (stderr,
+ _("%s: warning: the user name %s to %s SELinux user mapping failed.\n"),
+ Prog, user_name, user_selinux);
+#ifdef WITH_AUDIT
+ audit_logger (AUDIT_USER_CHAUTHTOK, Prog,
+ "modifying User mapping ",
+ user_name, (unsigned int) user_id,
+ SHADOW_AUDIT_FAILURE);
+#endif /* WITH_AUDIT */
+ fail_exit (E_SE_UPDATE);
+ }
+ } else {
+ if (del_seuser (user_name) != 0) {
+ fprintf (stderr,
+ _("%s: warning: the user name %s to SELinux user mapping removal failed.\n"),
+ Prog, user_name);
+#ifdef WITH_AUDIT
+ audit_logger (AUDIT_ADD_USER, Prog,
+ "removing SELinux user mapping",
+ user_name, (unsigned int) user_id,
+ SHADOW_AUDIT_FAILURE);
+#endif /* WITH_AUDIT */
+ fail_exit (E_SE_UPDATE);
+ }
+ }
+ }
+#endif /* WITH_SELINUX */
+
+ if (mflg) {
+ move_home ();
+ }
+
+#ifndef NO_MOVE_MAILBOX
+ if (lflg || uflg) {
+ move_mailbox ();
+ }
+#endif /* NO_MOVE_MAILBOX */
+
+ if (uflg) {
+ update_lastlog ();
+ update_faillog ();
+ }
+
+ if (!mflg && (uflg || gflg)) {
+ struct stat sb;
+
+ if (stat (dflg ? prefix_user_newhome : prefix_user_home, &sb) == 0 &&
+ ((uflg && sb.st_uid == user_newid) || sb.st_uid == user_id)) {
+ /*
+ * Change the UID on all of the files owned by
+ * `user_id' to `user_newid' in the user's home
+ * directory.
+ *
+ * move_home() already takes care of changing the
+ * ownership.
+ *
+ */
+#ifdef WITH_AUDIT
+ if (uflg || gflg) {
+ audit_logger (AUDIT_USER_CHAUTHTOK, Prog,
+ "changing home directory owner",
+ user_newname, (unsigned int) user_newid, 1);
+ }
+#endif
+ if (chown_tree (dflg ? prefix_user_newhome : prefix_user_home,
+ user_id,
+ uflg ? user_newid : (uid_t)-1,
+ user_gid,
+ gflg ? user_newgid : (gid_t)-1) != 0) {
+ fprintf (stderr,
+ _("%s: Failed to change ownership of the home directory"),
+ Prog);
+ fail_exit (E_HOMEDIR);
+ }
+ }
+ }
+
+ return E_SUCCESS;
+}
+
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-06 04:43:35 +0000