summaryrefslogtreecommitdiff
path: root/src/tools/sss_usermod.c
blob: 54e3304ff8fb073874181dd335f1278ba7c27c3c (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
/*
   SSSD

   sss_usermod

   Copyright (C) Jakub Hrozek <jhrozek@redhat.com>        2009

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 3 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

#include <stdio.h>
#include <stdlib.h>
#include <talloc.h>
#include <popt.h>
#include <errno.h>
#include <pwd.h>
#include <unistd.h>

#include "util/util.h"
#include "db/sysdb.h"
#include "tools/tools_util.h"
#include "tools/sss_sync_ops.h"

int main(int argc, const char **argv)
{
    int pc_lock = 0;
    uid_t pc_uid = 0;
    gid_t pc_gid = 0;
    char *pc_gecos = NULL;
    char *pc_home = NULL;
    char *pc_shell = NULL;
    int pc_debug = 0;
    const char *pc_selinux_user = NULL;
    struct poptOption long_options[] = {
        POPT_AUTOHELP
        { "debug", '\0', POPT_ARG_INT | POPT_ARGFLAG_DOC_HIDDEN, &pc_debug, 0, _("The debug level to run with"), NULL },
        { "uid",   'u', POPT_ARG_INT | POPT_ARGFLAG_DOC_HIDDEN, &pc_uid, 0, _("The UID of the user"), NULL },
        { "gid",   'g', POPT_ARG_INT | POPT_ARGFLAG_DOC_HIDDEN, &pc_gid, 0, _("The GID of the user"), NULL },
        { "gecos", 'c', POPT_ARG_STRING, &pc_gecos, 0, _("The comment string"), NULL },
        { "home",  'h', POPT_ARG_STRING, &pc_home, 0, _("Home directory"), NULL },
        { "shell", 's', POPT_ARG_STRING, &pc_shell, 0, _("Login shell"), NULL },
        { "append-group", 'a', POPT_ARG_STRING, NULL, 'a', _("Groups to add this user to"), NULL },
        { "remove-group", 'r', POPT_ARG_STRING, NULL, 'r', _("Groups to remove this user from"), NULL },
        { "lock", 'L', POPT_ARG_NONE, NULL, 'L', _("Lock the account"), NULL },
        { "unlock", 'U', POPT_ARG_NONE, NULL, 'U', _("Unlock the account"), NULL },
        { "selinux-user", 'Z', POPT_ARG_STRING, &pc_selinux_user, 0, _("The SELinux user for user's login"), NULL },
        POPT_TABLEEND
    };
    poptContext pc = NULL;
    char *addgroups = NULL, *rmgroups = NULL;
    int ret;
    const char *pc_username = NULL;
    struct tools_ctx *tctx = NULL;
    char *badgroup = NULL;

    debug_prg_name = argv[0];

    ret = set_locale();
    if (ret != EOK) {
        DEBUG(1, ("set_locale failed (%d): %s\n", ret, strerror(ret)));
        ERROR("Error setting the locale\n");
        ret = EXIT_FAILURE;
        goto fini;
    }

    /* parse parameters */
    pc = poptGetContext(NULL, argc, argv, long_options, 0);
    poptSetOtherOptionHelp(pc, "USERNAME");
    while ((ret = poptGetNextOpt(pc)) > 0) {
        switch (ret) {
            case 'a':
                addgroups = poptGetOptArg(pc);
                if (addgroups == NULL) {
                    ret = -1;
                }
                break;

            case 'r':
                rmgroups = poptGetOptArg(pc);
                if (rmgroups == NULL) {
                    ret = -1;
                }
                break;

            case 'L':
                pc_lock = DO_LOCK;
                break;

            case 'U':
                pc_lock = DO_UNLOCK;
                break;
        }
    }

    if (ret != -1) {
        usage(pc, poptStrerror(ret));
        ret = EXIT_FAILURE;
        goto fini;
    }

    debug_level = pc_debug;

    /* username is an argument without --option */
    pc_username = poptGetArg(pc);
    if (pc_username == NULL) {
        usage(pc, _("Specify user to modify\n"));
        ret = EXIT_FAILURE;
        goto fini;
    }

    CHECK_ROOT(ret, debug_prg_name);

    ret = init_sss_tools(&tctx);
    if (ret != EOK) {
        DEBUG(1, ("init_sss_tools failed (%d): %s\n", ret, strerror(ret)));
        if (ret == ENOENT) {
            ERROR("Error initializing the tools - no local domain\n");
        } else {
            ERROR("Error initializing the tools\n");
        }
        ret = EXIT_FAILURE;
        goto fini;
    }

    /* if the domain was not given as part of FQDN, default to local domain */
    ret = parse_name_domain(tctx, pc_username);
    if (ret != EOK) {
        ERROR("Invalid domain specified in FQDN\n");
        ret = EXIT_FAILURE;
        goto fini;
    }
    /* check the username to be able to give sensible error message */
    ret = sysdb_getpwnam_sync(tctx, tctx->sysdb,
                              tctx->octx->name, tctx->local,
                              tctx->octx);
    if (ret != EOK) {
        ERROR("Cannot find user in local domain, "
              "modifying users is allowed only in local domain\n");
        ret = EXIT_FAILURE;
        goto fini;
    }

    if (id_in_range(tctx->octx->uid, tctx->octx->domain) != EOK) {
        ERROR("The selected UID is outside the allowed range\n");
        ret = EXIT_FAILURE;
        goto fini;
    }

    if (addgroups) {
        ret = parse_groups(tctx, addgroups, &tctx->octx->addgroups);
        if (ret != EOK) {
            DEBUG(1, ("Cannot parse groups to add the user to\n"));
            ERROR("Internal error while parsing parameters\n");
            ret = EXIT_FAILURE;
            goto fini;
        }

        ret = parse_group_name_domain(tctx, tctx->octx->addgroups);
        if (ret != EOK) {
            DEBUG(1, ("Cannot parse FQDN groups to add the user to\n"));
            ERROR("Groups must be in the same domain as user\n");
            ret = EXIT_FAILURE;
            goto fini;
        }

        /* Check group names in the LOCAL domain */
        ret = check_group_names(tctx, tctx->octx->addgroups, &badgroup);
        if (ret != EOK) {
            ERROR("Cannot find group %s in local domain, "
                  "only groups in local domain are allowed\n", badgroup);
            ret = EXIT_FAILURE;
            goto fini;
        }
    }

    if (rmgroups) {
        ret = parse_groups(tctx, rmgroups, &tctx->octx->rmgroups);
        if (ret != EOK) {
            DEBUG(1, ("Cannot parse groups to remove the user from\n"));
            ERROR("Internal error while parsing parameters\n");
            ret = EXIT_FAILURE;
            goto fini;
        }

        ret = parse_group_name_domain(tctx, tctx->octx->rmgroups);
        if (ret != EOK) {
            DEBUG(1, ("Cannot parse FQDN groups to remove the user from\n"));
            ERROR("Groups must be in the same domain as user\n");
            ret = EXIT_FAILURE;
            goto fini;
        }

        /* Check group names in the LOCAL domain */
        ret = check_group_names(tctx, tctx->octx->rmgroups, &badgroup);
        if (ret != EOK) {
            ERROR("Cannot find group %s in local domain, "
                  "only groups in local domain are allowed\n", badgroup);
            ret = EXIT_FAILURE;
            goto fini;
        }
    }

    tctx->octx->gecos = pc_gecos;
    tctx->octx->home = pc_home;
    tctx->octx->shell = pc_shell;
    tctx->octx->uid = pc_uid;
    tctx->octx->gid = pc_gid;
    tctx->octx->lock = pc_lock;

    tctx->error = sysdb_transaction_start(tctx->sysdb);
    if (tctx->error != EOK) {
        goto done;
    }

    /* usermod */
    tctx->error = usermod(tctx, tctx->sysdb, tctx->octx);
    if (tctx->error) {
        /* cancel transaction */
        sysdb_transaction_cancel(tctx->sysdb);
        goto done;
    }

    tctx->error = sysdb_transaction_commit(tctx->sysdb);

    /* Set SELinux login context - must be done after transaction is done
     * b/c libselinux calls getpwnam */
    ret = set_seuser(tctx->octx->name, pc_selinux_user);
    if (ret != EOK) {
        ERROR("Cannot set SELinux login context\n");
        ret = EXIT_FAILURE;
        goto fini;
    }

done:
    if (tctx->error) {
        ret = tctx->error;
        switch (ret) {
            case ENOENT:
                ERROR("Could not modify user - check if group names are correct\n");
                break;

            case EFAULT:
                ERROR("Could not modify user - user already member of groups?\n");
                break;

            default:
                ERROR("Transaction error. Could not modify user.\n");
                break;
        }

        ret = EXIT_FAILURE;
        goto fini;
    }

    ret = EXIT_SUCCESS;

fini:
    free(addgroups);
    free(rmgroups);
    poptFreeContext(pc);
    talloc_free(tctx);
    exit(ret);
}