summaryrefslogtreecommitdiff
path: root/server/tools/sss_userdel.c
blob: be35b4faa1e1ffc46eeba7045e4139e258c417d7 (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
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
/*
   SSSD

   sss_userdel

   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 <sys/types.h>
#include <sys/wait.h>
#include <pwd.h>
#include <unistd.h>

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

#ifndef USERDEL
#define USERDEL SHADOW_UTILS_PATH"/userdel "
#endif

#ifndef USERDEL_USERNAME
#define USERDEL_USERNAME    "%s "
#endif

static void userdel_req_done(struct tevent_req *req)
{
    struct ops_ctx *data = tevent_req_callback_data(req, struct ops_ctx);

    data->error = sysdb_transaction_commit_recv(req);
    data->done = true;
}

/* sysdb callback */
static void userdel_done(void *pvt, int error, struct ldb_result *ignore)
{
    struct ops_ctx *data = talloc_get_type(pvt, struct ops_ctx);
    struct tevent_req *req;

    if (error != EOK) {
        goto fail;
    }

    req = sysdb_transaction_commit_send(data, data->ev, data->handle);
    if (!req) {
        error = ENOMEM;
        goto fail;
    }
    tevent_req_set_callback(req, userdel_req_done, data);

    return;

fail:
    /* free transaction */
    talloc_zfree(data->handle);

    data->error = error;
    data->done = true;
}

static void user_del_done(struct tevent_req *subreq);

static void user_del(struct tevent_req *req)
{
    struct ops_ctx *data;
    struct tevent_req *subreq;
    struct ldb_dn *user_dn;
    int ret;

    data = tevent_req_callback_data(req, struct ops_ctx);

    ret = sysdb_transaction_recv(req, data, &data->handle);
    if (ret != EOK) {
        return userdel_done(data, ret, NULL);
    }

    user_dn = sysdb_user_dn(data->ctx->sysdb, data,
                            data->domain->name, data->name);
    if (!user_dn) {
        DEBUG(1, ("Could not construct a user DN\n"));
        return userdel_done(data, ENOMEM, NULL);
    }

    subreq = sysdb_delete_entry_send(data, data->ev, data->handle, user_dn, false);
    if (!subreq)
        return userdel_done(data, ENOMEM, NULL);

    tevent_req_set_callback(subreq, user_del_done, data);
}

static void user_del_done(struct tevent_req *subreq)
{
    struct ops_ctx *data = tevent_req_callback_data(subreq, struct ops_ctx);
    int ret;

    ret = sysdb_delete_entry_recv(subreq);

    return userdel_done(data, ret, NULL);
}

static int userdel_legacy(struct ops_ctx *ctx)
{
    int ret = EOK;
    char *command = NULL;

    APPEND_STRING(command, USERDEL);
    APPEND_PARAM(command, USERDEL_USERNAME, ctx->name);

    ret = system(command);
    if (ret) {
        if (ret == -1) {
            DEBUG(1, ("system(3) failed\n"));
        } else {
            DEBUG(1, ("Could not exec '%s', return code: %d\n",
                      command, WEXITSTATUS(ret)));
        }
        talloc_free(command);
        return EFAULT;
    }

    talloc_free(command);
    return ret;
}

int main(int argc, const char **argv)
{
    int ret = EXIT_SUCCESS;
    struct ops_ctx *data = NULL;
    struct tools_ctx *ctx = NULL;
    struct tevent_req *req;
    struct sss_domain_info *dom;
    struct passwd *pwd_info;
    const char *pc_username = NULL;

    int pc_debug = 0;
    poptContext pc = 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 },
        POPT_TABLEEND
    };

    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;
    }
    CHECK_ROOT(ret, debug_prg_name);

    ret = init_sss_tools(&ctx);
    if(ret != EOK) {
        DEBUG(1, ("init_sss_tools failed (%d): %s\n", ret, strerror(ret)));
        ERROR("Error initializing the tools\n");
        ret = EXIT_FAILURE;
        goto fini;
    }

    data = talloc_zero(NULL, struct ops_ctx);
    if (data == NULL) {
        DEBUG(1, ("Could not allocate memory for data context\n"));
        ERROR("Out of memory\n");
        return ENOMEM;
    }
    data->ctx = ctx;
    data->ev = ctx->ev;

    /* parse ops_ctx */
    pc = poptGetContext(NULL, argc, argv, long_options, 0);
    poptSetOtherOptionHelp(pc, "USERNAME");
    if ((ret = poptGetNextOpt(pc)) < -1) {
        usage(pc, poptStrerror(ret));
        ret = EXIT_FAILURE;
        goto fini;
    }

    debug_level = pc_debug;

    pc_username = poptGetArg(pc);
    if (pc_username == NULL) {
        usage(pc, _("Specify user to delete\n"));
        ret = EXIT_FAILURE;
        goto fini;
    }

    ret = parse_name_domain(data, pc_username);
    if (ret != EOK) {
        ret = EXIT_FAILURE;
        goto fini;
    }

    /* arguments processed, go on to actual work */
    pwd_info = getpwnam(data->name);
    if (pwd_info) {
        data->uid = pwd_info->pw_uid;
    }

    ret = get_domain_by_id(data->ctx, data->uid, &dom);
    if (ret != EOK) {
        ERROR("Cannot get domain info\n");
        ret = EXIT_FAILURE;
        goto fini;
    }
    if (data->domain && data->uid && data->domain != dom) {
        ERROR("Selected domain %s conflicts with selected UID %llu\n",
                data->domain->name, (unsigned long long int) data->uid);
        ret = EXIT_FAILURE;
        goto fini;
    }
    if (data->domain == NULL && dom) {
        data->domain = dom;
    }

    ret = get_domain_type(data->ctx, data->domain);
    switch (ret) {
        case ID_IN_LOCAL:
            break;

        case ID_IN_LEGACY_LOCAL:
        case ID_OUTSIDE:
            ret = userdel_legacy(data);
            if(ret != EOK) {
                ERROR("Cannot delete user from domain using the legacy tools\n");
                ret = EXIT_FAILURE;
                goto fini;
            }
            break; /* Also delete possible cached entries in sysdb */

        case ID_IN_OTHER:
            DEBUG(1, ("Cannot remove user from domain %s\n", dom->name));
            ERROR("Unsupported domain type\n");
            ret = EXIT_FAILURE;
            goto fini;

        default:
            DEBUG(1, ("Unknown return code %d from get_domain_type\n", ret));
            ERROR("Error looking up domain\n");
            ret = EXIT_FAILURE;
            goto fini;
    }

    /* userdel */
    req = sysdb_transaction_send(ctx, ctx->ev, ctx->sysdb);
    if (!req) {
        DEBUG(1, ("Could not start transaction (%d)[%s]\n", ret, strerror(ret)));
        ERROR("Transaction error. Could not remove user.\n");
        ret = EXIT_FAILURE;
        goto fini;
    }
    tevent_req_set_callback(req, user_del, data);

    while (!data->done) {
        tevent_loop_once(ctx->ev);
    }

    if (data->error) {
        ret = data->error;
        DEBUG(1, ("sysdb operation failed (%d)[%s]\n", ret, strerror(ret)));
        switch (ret) {
            case ENOENT:
                ERROR("No such user\n");
                break;

            default:
                ERROR("Internal error. Could not remove user.\n");
                break;
        }
        ret = EXIT_FAILURE;
        goto fini;
    }

    ret = EXIT_SUCCESS;

fini:
    talloc_free(ctx);
    talloc_free(data);
    poptFreeContext(pc);
    exit(ret);
}