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Diffstat (limited to 'src/rest-plugins/plugin_rest_copying.c')
-rw-r--r-- | src/rest-plugins/plugin_rest_copying.c | 231 |
1 files changed, 231 insertions, 0 deletions
diff --git a/src/rest-plugins/plugin_rest_copying.c b/src/rest-plugins/plugin_rest_copying.c new file mode 100644 index 000000000..668dc5d38 --- /dev/null +++ b/src/rest-plugins/plugin_rest_copying.c | |||
@@ -0,0 +1,231 @@ | |||
1 | /* | ||
2 | This file is part of GNUnet. | ||
3 | Copyright (C) 2012-2018 GNUnet e.V. | ||
4 | |||
5 | GNUnet is free software: you can redistribute it and/or modify it | ||
6 | under the terms of the GNU Affero General Public License as published | ||
7 | by the Free Software Foundation, either version 3 of the License, | ||
8 | or (at your option) any later version. | ||
9 | |||
10 | GNUnet is distributed in the hope that it will be useful, but | ||
11 | WITHOUT ANY WARRANTY; without even the implied warranty of | ||
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
13 | Affero General Public License for more details. | ||
14 | |||
15 | You should have received a copy of the GNU Affero General Public License | ||
16 | along with this program. If not, see <http://www.gnu.org/licenses/>. | ||
17 | */ | ||
18 | /** | ||
19 | * @author Martin Schanzenbach | ||
20 | * @file gns/plugin_rest_copying.c | ||
21 | * @brief REST plugin that serves licensing information. | ||
22 | * | ||
23 | */ | ||
24 | |||
25 | #include "platform.h" | ||
26 | #include "gnunet_rest_plugin.h" | ||
27 | #include <gnunet_rest_lib.h> | ||
28 | |||
29 | #define GNUNET_REST_API_NS_COPYING "/copying" | ||
30 | |||
31 | #define GNUNET_REST_COPYING_TEXT "GNU Affero General Public License version 3 or later. See also: <http://www.gnu.org/licenses/>" | ||
32 | |||
33 | /** | ||
34 | * @brief struct returned by the initialization function of the plugin | ||
35 | */ | ||
36 | struct Plugin | ||
37 | { | ||
38 | const struct GNUNET_CONFIGURATION_Handle *cfg; | ||
39 | }; | ||
40 | |||
41 | const struct GNUNET_CONFIGURATION_Handle *cfg; | ||
42 | |||
43 | struct RequestHandle | ||
44 | { | ||
45 | /** | ||
46 | * Handle to rest request | ||
47 | */ | ||
48 | struct GNUNET_REST_RequestHandle *rest_handle; | ||
49 | |||
50 | /** | ||
51 | * The plugin result processor | ||
52 | */ | ||
53 | GNUNET_REST_ResultProcessor proc; | ||
54 | |||
55 | /** | ||
56 | * The closure of the result processor | ||
57 | */ | ||
58 | void *proc_cls; | ||
59 | |||
60 | /** | ||
61 | * HTTP response code | ||
62 | */ | ||
63 | int response_code; | ||
64 | |||
65 | }; | ||
66 | |||
67 | |||
68 | /** | ||
69 | * Cleanup request handle. | ||
70 | * | ||
71 | * @param handle Handle to clean up | ||
72 | */ | ||
73 | static void | ||
74 | cleanup_handle (struct RequestHandle *handle) | ||
75 | { | ||
76 | GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, | ||
77 | "Cleaning up\n"); | ||
78 | GNUNET_free (handle); | ||
79 | } | ||
80 | |||
81 | |||
82 | /** | ||
83 | * Task run on shutdown. Cleans up everything. | ||
84 | * | ||
85 | * @param cls unused | ||
86 | * @param tc scheduler context | ||
87 | */ | ||
88 | static void | ||
89 | do_error (void *cls) | ||
90 | { | ||
91 | struct RequestHandle *handle = cls; | ||
92 | struct MHD_Response *resp; | ||
93 | |||
94 | resp = GNUNET_REST_create_response (NULL); | ||
95 | handle->proc (handle->proc_cls, resp, handle->response_code); | ||
96 | cleanup_handle (handle); | ||
97 | } | ||
98 | |||
99 | |||
100 | /** | ||
101 | * Handle rest request | ||
102 | * | ||
103 | * @param handle the lookup handle | ||
104 | */ | ||
105 | static void | ||
106 | get_cont (struct GNUNET_REST_RequestHandle *con_handle, | ||
107 | const char* url, | ||
108 | void *cls) | ||
109 | { | ||
110 | struct MHD_Response *resp; | ||
111 | struct RequestHandle *handle = cls; | ||
112 | |||
113 | resp = GNUNET_REST_create_response (GNUNET_REST_COPYING_TEXT); | ||
114 | handle->proc (handle->proc_cls, | ||
115 | resp, | ||
116 | MHD_HTTP_OK); | ||
117 | cleanup_handle (handle); | ||
118 | } | ||
119 | |||
120 | |||
121 | |||
122 | /** | ||
123 | * Handle rest request | ||
124 | * | ||
125 | * @param handle the lookup handle | ||
126 | */ | ||
127 | static void | ||
128 | options_cont (struct GNUNET_REST_RequestHandle *con_handle, | ||
129 | const char* url, | ||
130 | void *cls) | ||
131 | { | ||
132 | struct MHD_Response *resp; | ||
133 | struct RequestHandle *handle = cls; | ||
134 | |||
135 | resp = GNUNET_REST_create_response (NULL); | ||
136 | MHD_add_response_header (resp, | ||
137 | "Access-Control-Allow-Methods", | ||
138 | MHD_HTTP_METHOD_GET); | ||
139 | handle->proc (handle->proc_cls, | ||
140 | resp, | ||
141 | MHD_HTTP_OK); | ||
142 | cleanup_handle (handle); | ||
143 | } | ||
144 | |||
145 | |||
146 | /** | ||
147 | * Function processing the REST call | ||
148 | * | ||
149 | * @param method HTTP method | ||
150 | * @param url URL of the HTTP request | ||
151 | * @param data body of the HTTP request (optional) | ||
152 | * @param data_size length of the body | ||
153 | * @param proc callback function for the result | ||
154 | * @param proc_cls closure for @a proc | ||
155 | * @return #GNUNET_OK if request accepted | ||
156 | */ | ||
157 | static void | ||
158 | rest_copying_process_request (struct GNUNET_REST_RequestHandle *conndata_handle, | ||
159 | GNUNET_REST_ResultProcessor proc, | ||
160 | void *proc_cls) | ||
161 | { | ||
162 | static const struct GNUNET_REST_RequestHandler handlers[] = { | ||
163 | {MHD_HTTP_METHOD_GET, GNUNET_REST_API_NS_COPYING, &get_cont}, | ||
164 | {MHD_HTTP_METHOD_OPTIONS, GNUNET_REST_API_NS_COPYING, &options_cont}, | ||
165 | GNUNET_REST_HANDLER_END | ||
166 | }; | ||
167 | struct RequestHandle *handle = GNUNET_new (struct RequestHandle); | ||
168 | struct GNUNET_REST_RequestHandlerError err; | ||
169 | |||
170 | handle->proc_cls = proc_cls; | ||
171 | handle->proc = proc; | ||
172 | handle->rest_handle = conndata_handle; | ||
173 | |||
174 | if (GNUNET_NO == GNUNET_REST_handle_request (conndata_handle, | ||
175 | handlers, | ||
176 | &err, | ||
177 | handle)) | ||
178 | { | ||
179 | handle->response_code = err.error_code; | ||
180 | GNUNET_SCHEDULER_add_now (&do_error, handle); | ||
181 | } | ||
182 | } | ||
183 | |||
184 | |||
185 | /** | ||
186 | * Entry point for the plugin. | ||
187 | * | ||
188 | * @param cls the "struct GNUNET_NAMESTORE_PluginEnvironment*" | ||
189 | * @return NULL on error, otherwise the plugin context | ||
190 | */ | ||
191 | void * | ||
192 | libgnunet_plugin_rest_copying_init (void *cls) | ||
193 | { | ||
194 | static struct Plugin plugin; | ||
195 | cfg = cls; | ||
196 | struct GNUNET_REST_Plugin *api; | ||
197 | |||
198 | if (NULL != plugin.cfg) | ||
199 | return NULL; /* can only initialize once! */ | ||
200 | memset (&plugin, 0, sizeof (struct Plugin)); | ||
201 | plugin.cfg = cfg; | ||
202 | api = GNUNET_new (struct GNUNET_REST_Plugin); | ||
203 | api->cls = &plugin; | ||
204 | api->name = GNUNET_REST_API_NS_COPYING; | ||
205 | api->process_request = &rest_copying_process_request; | ||
206 | GNUNET_log (GNUNET_ERROR_TYPE_INFO, | ||
207 | _("COPYING REST API initialized\n")); | ||
208 | return api; | ||
209 | } | ||
210 | |||
211 | |||
212 | /** | ||
213 | * Exit point from the plugin. | ||
214 | * | ||
215 | * @param cls the plugin context (as returned by "init") | ||
216 | * @return always NULL | ||
217 | */ | ||
218 | void * | ||
219 | libgnunet_plugin_rest_copying_done (void *cls) | ||
220 | { | ||
221 | struct GNUNET_REST_Plugin *api = cls; | ||
222 | struct Plugin *plugin = api->cls; | ||
223 | |||
224 | plugin->cfg = NULL; | ||
225 | GNUNET_free (api); | ||
226 | GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, | ||
227 | "COPYING REST plugin is finished\n"); | ||
228 | return NULL; | ||
229 | } | ||
230 | |||
231 | /* end of plugin_rest_copying.c */ | ||