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
|
/* ====================================================================
* The Apache Software License, Version 1.1
*
* Copyright (c) 2000 The Apache Software Foundation. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution,
* if any, must include the following acknowledgment:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowledgment may appear in the software itself,
* if and wherever such third-party acknowledgments normally appear.
*
* 4. The names "Apache" and "Apache Software Foundation" must
* not be used to endorse or promote products derived from this
* software without prior written permission. For written
* permission, please contact apache@apache.org.
*
* 5. Products derived from this software may not be called "Apache",
* nor may "Apache" appear in their name, without prior written
* permission of the Apache Software Foundation.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*
* Portions of this software are based upon public domain software
* originally written at the National Center for Supercomputing Applications,
* University of Illinois, Urbana-Champaign.
*/
#include "httpd.h"
#include "http_config.h"
#include "http_core.h"
#include "http_request.h"
#include "apr_strings.h"
#include "unixd.h"
module MODULE_VAR_EXPORT suexec_module;
typedef struct {
ap_unix_identity_t ugid;
int active;
} suexec_config_t;
/*
* Create a configuration specific to this module for a server or directory
* location, and fill it with the default settings.
*/
static void *mkconfig(apr_pool_t *p)
{
suexec_config_t *cfg = apr_palloc(p, sizeof(suexec_config_t));
cfg->active = 0;
return cfg;
}
/*
* Respond to a callback to create configuration record for a server or
* vhost environment.
*/
static void *create_mconfig_for_server(apr_pool_t *p, server_rec *s)
{
return mkconfig(p);
}
/*
* Respond to a callback to create a config record for a specific directory.
*/
static void *create_mconfig_for_directory(apr_pool_t *p, char *dir)
{
return mkconfig(p);
}
static const char *set_suexec_ugid(cmd_parms *cmd, void *mconfig,
const char *uid, const char *gid)
{
suexec_config_t *cfg = (suexec_config_t *) mconfig;
const char *err = ap_check_cmd_context(cmd, NOT_IN_DIR_LOC_FILE|NOT_IN_LIMIT);
if (err != NULL) {
return err;
}
if (unixd_config.suexec_enabled) {
cfg->ugid.uid = ap_uname2id(uid);
cfg->ugid.gid = ap_gname2id(gid);
cfg->active = 1;
}
else {
fprintf(stderr,
"Warning: SuexecUserGroup directive requires SUEXEC wrapper.\n");
}
return NULL;
}
static ap_unix_identity_t *get_suexec_id_doer(const request_rec *r)
{
suexec_config_t *cfg =
(suexec_config_t *) ap_get_module_config(r->per_dir_config, &suexec_module);
return cfg->active ? &cfg->ugid : NULL;
}
/*
* Define the directives specific to this module. This structure is referenced
* later by the 'module' structure.
*/
static const command_rec suexec_cmds[] =
{
/* XXX - Another important reason not to allow this in .htaccess is that
* the ap_[ug]name2id() is not thread-safe */
AP_INIT_TAKE2("SuexecUserGroup", set_suexec_ugid, NULL, RSRC_CONF,
"User and group for spawned processes"),
{ NULL }
};
static void suexec_hooks(void)
{
ap_hook_get_suexec_identity(get_suexec_id_doer,NULL,NULL,AP_HOOK_MIDDLE);
}
module MODULE_VAR_EXPORT suexec_module =
{
STANDARD20_MODULE_STUFF,
create_mconfig_for_directory, /* create per-dir config */
NULL, /* merge per-dir config */
create_mconfig_for_server, /* server config */
NULL, /* merge server config */
suexec_cmds, /* command table */
suexec_hooks /* register hooks */
};
|
