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
|
/* ====================================================================
* The Apache Software License, Version 1.1
*
* Copyright (c) 2000-2001 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.
*/
/*
* mod_actions.c: executes scripts based on MIME type or HTTP method
*
* by Alexei Kosut; based on mod_cgi.c, mod_mime.c and mod_includes.c,
* adapted by rst from original NCSA code by Rob McCool
*
* Usage instructions:
*
* Action mime/type /cgi-bin/script
*
* will activate /cgi-bin/script when a file of content type mime/type is
* requested. It sends the URL and file path of the requested document using
* the standard CGI PATH_INFO and PATH_TRANSLATED environment variables.
*
* Script PUT /cgi-bin/script
*
* will activate /cgi-bin/script when a request is received with the
* HTTP method "PUT". The available method names are defined in httpd.h.
* If the method is GET, the script will only be activated if the requested
* URI includes query information (stuff after a ?-mark).
*/
#include "apr_strings.h"
#include "ap_config.h"
#include "httpd.h"
#include "http_config.h"
#include "http_request.h"
#include "http_core.h"
#include "http_protocol.h"
#include "http_main.h"
#include "http_log.h"
#include "util_script.h"
typedef struct {
apr_table_t *action_types; /* Added with Action... */
const char *scripted[METHODS]; /* Added with Script... */
} action_dir_config;
module action_module;
static void *create_action_dir_config(apr_pool_t *p, char *dummy)
{
action_dir_config *new =
(action_dir_config *) apr_pcalloc(p, sizeof(action_dir_config));
new->action_types = apr_table_make(p, 4);
return new;
}
static void *merge_action_dir_configs(apr_pool_t *p, void *basev, void *addv)
{
action_dir_config *base = (action_dir_config *) basev;
action_dir_config *add = (action_dir_config *) addv;
action_dir_config *new = (action_dir_config *) apr_palloc(p,
sizeof(action_dir_config));
int i;
new->action_types = apr_table_overlay(p, add->action_types,
base->action_types);
for (i = 0; i < METHODS; ++i) {
new->scripted[i] = add->scripted[i] ? add->scripted[i]
: base->scripted[i];
}
return new;
}
static const char *add_action(cmd_parms *cmd, void *m_v,
const char *type, const char *script)
{
action_dir_config *m = (action_dir_config *)m_v;
apr_table_setn(m->action_types, type, script);
return NULL;
}
static const char *set_script(cmd_parms *cmd, void *m_v,
const char *method, const char *script)
{
action_dir_config *m = (action_dir_config *)m_v;
int methnum;
methnum = ap_method_number_of(method);
if (methnum == M_TRACE)
return "TRACE not allowed for Script";
else if (methnum == M_INVALID)
return "Unknown method type for Script";
else
m->scripted[methnum] = script;
return NULL;
}
static const command_rec action_cmds[] =
{
AP_INIT_TAKE2("Action", add_action, NULL, OR_FILEINFO,
"a media type followed by a script name"),
AP_INIT_TAKE2("Script", set_script, NULL, ACCESS_CONF | RSRC_CONF,
"a method followed by a script name"),
{NULL}
};
static int action_handler(request_rec *r)
{
action_dir_config *conf = (action_dir_config *)
ap_get_module_config(r->per_dir_config, &action_module);
const char *t, *action = r->handler ? r->handler :
ap_field_noparam(r->pool, r->content_type);
const char *script;
int i;
/* Note that this handler handles _all_ types, so handler is unchecked */
/* Set allowed stuff */
for (i = 0; i < METHODS; ++i) {
if (conf->scripted[i])
r->allowed |= (1 << i);
}
/* First, check for the method-handling scripts */
if (r->method_number == M_GET) {
if (r->args)
script = conf->scripted[M_GET];
else
script = NULL;
}
else {
script = conf->scripted[r->method_number];
}
/* Check for looping, which can happen if the CGI script isn't */
if (script && r->prev && r->prev->prev)
return DECLINED;
/* Second, check for actions (which override the method scripts) */
if ((t = apr_table_get(conf->action_types,
action ? action : ap_default_type(r)))) {
script = t;
if (r->finfo.filetype == 0) {
ap_log_rerror(APLOG_MARK, APLOG_NOERRNO|APLOG_ERR, 0, r,
"File does not exist: %s", r->filename);
return HTTP_NOT_FOUND;
}
}
if (script == NULL)
return DECLINED;
ap_internal_redirect_handler(apr_pstrcat(r->pool, script, ap_escape_uri(r->pool,
r->uri), r->args ? "?" : NULL, r->args, NULL), r);
return OK;
}
static void register_hooks(apr_pool_t *p)
{
ap_hook_handler(action_handler,NULL,NULL,APR_HOOK_LAST);
}
module action_module =
{
STANDARD20_MODULE_STUFF,
create_action_dir_config, /* dir config creater */
merge_action_dir_configs, /* dir merger --- default is to override */
NULL, /* server config */
NULL, /* merge server config */
action_cmds, /* command apr_table_t */
register_hooks /* register hooks */
};
|
