mirror of
https://github.com/sheumann/hush.git
synced 2024-07-04 21:29:34 +00:00
d921b2ecc0
things like xasprintf() into xfuncs.c, remove xprint_file_by_name() (it only had one user), clean up lots of #includes... General cleanup pass. What I've been doing for the last couple days. And it conflicts! I've removed httpd.c from this checkin due to somebody else touching that file. It builds for me. I have to catch a bus. (Now you know why I'm looking forward to Mercurial.)
109 lines
2.4 KiB
C
109 lines
2.4 KiB
C
/* vi: set sw=4 ts=4: */
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/*
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* addgroup - add users to /etc/passwd and /etc/shadow
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*
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* Copyright (C) 1999 by Lineo, inc. and John Beppu
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* Copyright (C) 1999,2000,2001 by John Beppu <beppu@codepoet.org>
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*
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* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
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*
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*/
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#include "busybox.h"
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/* make sure gr_name isn't taken, make sure gid is kosher
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* return 1 on failure */
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static int group_study(struct group *g)
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{
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FILE *etc_group;
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gid_t desired;
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struct group *grp;
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const int max = 65000;
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etc_group = xfopen(bb_path_group_file, "r");
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/* make sure gr_name isn't taken, make sure gid is kosher */
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desired = g->gr_gid;
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while ((grp = fgetgrent(etc_group))) {
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if ((strcmp(grp->gr_name, g->gr_name)) == 0) {
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bb_error_msg_and_die("%s: group already in use", g->gr_name);
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}
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if ((desired) && grp->gr_gid == desired) {
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bb_error_msg_and_die("%d: gid already in use",
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desired);
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}
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if ((grp->gr_gid > g->gr_gid) && (grp->gr_gid < max)) {
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g->gr_gid = grp->gr_gid;
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}
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}
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fclose(etc_group);
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/* gid */
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if (desired) {
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g->gr_gid = desired;
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} else {
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g->gr_gid++;
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}
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/* return 1; */
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return 0;
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}
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/* append a new user to the passwd file */
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static int addgroup(char *group, gid_t gid, const char *user)
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{
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FILE *file;
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struct group gr;
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/* make sure gid and group haven't already been allocated */
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gr.gr_gid = gid;
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gr.gr_name = group;
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if (group_study(&gr))
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return 1;
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/* add entry to group */
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file = xfopen(bb_path_group_file, "a");
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/* group:passwd:gid:userlist */
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fprintf(file, "%s:%s:%d:%s\n", group, "x", gr.gr_gid, user);
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fclose(file);
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#if ENABLE_FEATURE_SHADOWPASSWDS
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file = xfopen(bb_path_gshadow_file, "a");
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fprintf(file, "%s:!::\n", group);
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fclose(file);
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#endif
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/* return 1; */
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return 0;
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}
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/*
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* addgroup will take a login_name as its first parameter.
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*
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* gid
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*
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* can be customized via command-line parameters.
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* ________________________________________________________________________ */
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int addgroup_main(int argc, char **argv)
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{
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char *group;
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gid_t gid = 0;
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/* check for min, max and missing args and exit on error */
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bb_opt_complementally = "-1:?2:?";
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if (bb_getopt_ulflags(argc, argv, "g:", &group)) {
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gid = bb_xgetlarg(group, 10, 0, LONG_MAX);
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}
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/* move past the commandline options */
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argv += optind;
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/* need to be root */
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if(geteuid()) {
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bb_error_msg_and_die(bb_msg_perm_denied_are_you_root);
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}
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/* werk */
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return addgroup(argv[0], gid, (argv[1]) ? argv[1] : "");
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}
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