source: mod_gnutls/include/mod_gnutls.h.in @ d8c7cf4

debian/masterdebian/stretch-backportsjessie-backportsmsvaupstream
Last change on this file since d8c7cf4 was d8c7cf4, checked in by Nikos Mavrogiannopoulos <nmav@…>, 9 years ago

Only allow two options for DB. Berkeley DB and gdbm. The other options
such as SDBM had serious limitations. Thanks to Hardy Griech for pointing out.

  • Property mode set to 100644
File size: 9.8 KB
Line 
1/**
2 *  Copyright 2004-2005 Paul Querna
3 *
4 *  Licensed under the Apache License, Version 2.0 (the "License");
5 *  you may not use this file except in compliance with the License.
6 *  You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 *  Unless required by applicable law or agreed to in writing, software
11 *  distributed under the License is distributed on an "AS IS" BASIS,
12 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 *  See the License for the specific language governing permissions and
14 *  limitations under the License.
15 *
16 */
17
18#include "httpd.h"
19#include "http_config.h"
20#include "http_protocol.h"
21#include "http_connection.h"
22#include "http_request.h"
23#include "http_core.h"
24#include "http_log.h"
25#include "apr_buckets.h"
26#include "apr_strings.h"
27#include "apr_tables.h"
28#include "ap_release.h"
29
30#include <gnutls/gnutls.h>
31#include <gnutls/extra.h>
32#include <gnutls/openpgp.h>
33#include <gnutls/x509.h>
34
35#ifndef __mod_gnutls_h_inc
36#define __mod_gnutls_h_inc
37
38#define HAVE_APR_MEMCACHE    @have_apr_memcache@
39
40extern module AP_MODULE_DECLARE_DATA gnutls_module;
41
42#define GNUTLS_OUTPUT_FILTER_NAME "gnutls_output_filter"
43#define GNUTLS_INPUT_FILTER_NAME "gnutls_input_filter"
44
45#define GNUTLS_ENABLED_FALSE 0
46#define GNUTLS_ENABLED_TRUE  1
47
48#define MOD_GNUTLS_VERSION "@MOD_GNUTLS_VERSION@"
49
50#define MOD_GNUTLS_DEBUG @OOO_MAINTAIN@
51
52/* Recent Versions of 2.1 renamed several hooks. This allows us to
53   compile on 2.0.xx  */
54#if AP_SERVER_MINORVERSION_NUMBER >= 2 || (AP_SERVER_MINORVERSION_NUMBER == 1 && AP_SERVER_PATCHLEVEL_NUMBER >= 3)
55#define USING_2_1_RECENT 1
56#endif
57
58#ifndef USING_2_1_RECENT
59#define USING_2_1_RECENT 0
60#endif
61
62typedef enum
63{
64    mgs_cache_none,
65    mgs_cache_dbm,
66    mgs_cache_gdbm,
67#if HAVE_APR_MEMCACHE
68    mgs_cache_memcache
69#endif
70} mgs_cache_e;
71
72typedef struct
73{
74    int client_verify_mode;
75    const char* lua_bytecode;
76    apr_size_t lua_bytecode_len;
77} mgs_dirconf_rec;
78
79
80/* The maximum number of certificates to send in a chain
81 */
82#define MAX_CHAIN_SIZE 8
83
84typedef struct
85{
86    gnutls_certificate_credentials_t certs;
87    gnutls_srp_server_credentials_t srp_creds;
88    gnutls_anon_server_credentials_t anon_creds;
89    char* cert_cn;
90    gnutls_x509_crt_t certs_x509[MAX_CHAIN_SIZE]; /* A certificate chain */
91    unsigned int certs_x509_num;
92    gnutls_x509_privkey_t privkey_x509;
93    gnutls_openpgp_crt_t cert_pgp; /* A certificate chain */
94    gnutls_openpgp_privkey_t privkey_pgp;
95    int enabled;
96    /* whether to send the PEM encoded certificates
97     * to CGIs
98     */
99    int export_certificates_enabled;
100    gnutls_priority_t priorities;
101    gnutls_rsa_params_t rsa_params;
102    gnutls_dh_params_t dh_params;
103    int cache_timeout;
104    mgs_cache_e cache_type;
105    const char* cache_config;
106    const char* srp_tpasswd_file;
107    const char* srp_tpasswd_conf_file;
108    gnutls_x509_crt_t *ca_list;
109    gnutls_openpgp_keyring_t pgp_list;
110    unsigned int ca_list_size;
111    int client_verify_mode;
112    apr_time_t last_cache_check;
113    int tickets; /* whether session tickets are allowed */
114} mgs_srvconf_rec;
115
116typedef struct {
117    int length;
118    char *value;
119} mgs_char_buffer_t;
120
121typedef struct
122{
123    mgs_srvconf_rec *sc;
124    conn_rec* c;
125    gnutls_session_t session;
126
127    apr_status_t input_rc;
128    ap_filter_t *input_filter;
129    apr_bucket_brigade *input_bb;
130    apr_read_type_e input_block;
131    ap_input_mode_t input_mode;
132    mgs_char_buffer_t input_cbuf;
133    char input_buffer[AP_IOBUFSIZE];
134
135    apr_status_t output_rc;
136    ap_filter_t *output_filter;
137    apr_bucket_brigade *output_bb;
138    char output_buffer[AP_IOBUFSIZE];
139    apr_size_t output_blen;
140    apr_size_t output_length;
141
142    int status;
143    int non_https;
144} mgs_handle_t;
145
146/** Functions in gnutls_io.c **/
147
148/**
149 * mgs_filter_input will filter the input data
150 * by decrypting it using GnuTLS and passes it cleartext.
151 *
152 * @param f     the filter info record
153 * @param bb    the bucket brigade, where to store the result to
154 * @param mode  what shall we read?
155 * @param block a block index we shall read from?
156 * @return result status
157 */
158apr_status_t mgs_filter_input(ap_filter_t * f,
159                                     apr_bucket_brigade * bb,
160                                     ap_input_mode_t mode,
161                                     apr_read_type_e block,
162                                     apr_off_t readbytes);
163
164/**
165 * mgs_filter_output will filter the encrypt
166 * the incoming bucket using GnuTLS and passes it onto the next filter.
167 *
168 * @param f     the filter info record
169 * @param bb    the bucket brigade, where to store the result to
170 * @return result status
171 */
172apr_status_t mgs_filter_output(ap_filter_t * f,
173                                      apr_bucket_brigade * bb);
174
175
176/**
177 * mgs_transport_read is called from GnuTLS to provide encrypted
178 * data from the client.
179 *
180 * @param ptr     pointer to the filter context
181 * @param buffer  place to put data
182 * @param len     maximum size
183 * @return size   length of the data stored in buffer
184 */
185ssize_t mgs_transport_read(gnutls_transport_ptr_t ptr,
186                                  void *buffer, size_t len);
187
188/**
189 * mgs_transport_write is called from GnuTLS to
190 * write data to the client.
191 *
192 * @param ptr     pointer to the filter context
193 * @param buffer  buffer to write to the client
194 * @param len     size of the buffer
195 * @return size   length of the data written
196 */
197ssize_t mgs_transport_write(gnutls_transport_ptr_t ptr,
198                                   const void *buffer, size_t len);
199
200
201int mgs_rehandshake(mgs_handle_t * ctxt);
202
203
204
205/**
206 * Init the Cache after Configuration is done
207 */
208int mgs_cache_post_config(apr_pool_t *p, server_rec *s,
209                                 mgs_srvconf_rec *sc);
210/**
211 * Init the Cache inside each Process
212 */
213int mgs_cache_child_init(apr_pool_t *p, server_rec *s,
214                                mgs_srvconf_rec *sc);
215/**
216 * Setup the Session Caching
217 */
218int mgs_cache_session_init(mgs_handle_t *ctxt);
219
220#define GNUTLS_SESSION_ID_STRING_LEN \
221    ((GNUTLS_MAX_SESSION_ID + 1) * 2)
222   
223/**
224 * Convert a SSL Session ID into a Null Terminated Hex Encoded String
225 * @param id raw SSL Session ID
226 * @param idlen Length of the raw Session ID
227 * @param str Location to store the Hex Encoded String
228 * @param strsize The Maximum Length that can be stored in str
229 */
230char *mgs_session_id2sz(unsigned char *id, int idlen,
231                                char *str, int strsize);
232
233/**
234 * Convert a time_t into a Null Terminated String
235 * @param t time_t time
236 * @param str Location to store the Hex Encoded String
237 * @param strsize The Maximum Length that can be stored in str
238 */
239char *mgs_time2sz(time_t t, char *str, int strsize);
240
241
242/* Configuration Functions */
243
244const char *mgs_set_srp_tpasswd_conf_file(cmd_parms * parms, void *dummy,
245                                        const char *arg);
246const char *mgs_set_srp_tpasswd_file(cmd_parms * parms, void *dummy,
247                                        const char *arg);
248const char *mgs_set_dh_file(cmd_parms * parms, void *dummy,
249                                        const char *arg);
250const char *mgs_set_rsa_export_file(cmd_parms * parms, void *dummy,
251                                        const char *arg);
252const char *mgs_set_cert_file(cmd_parms * parms, void *dummy,
253                                        const char *arg);
254
255const char *mgs_set_key_file(cmd_parms * parms, void *dummy,
256                             const char *arg);
257
258const char *mgs_set_pgpcert_file(cmd_parms * parms, void *dummy,
259                                        const char *arg);
260
261const char *mgs_set_pgpkey_file(cmd_parms * parms, void *dummy,
262                             const char *arg);
263
264const char *mgs_set_cache(cmd_parms * parms, void *dummy,
265                          const char *type, const char* arg);
266
267const char *mgs_set_cache_timeout(cmd_parms * parms, void *dummy,
268                                  const char *arg);
269
270const char *mgs_set_client_verify(cmd_parms * parms, void *dummy,
271                                  const char *arg);
272
273const char *mgs_set_client_ca_file(cmd_parms * parms, void *dummy,
274                                   const char *arg);
275
276const char *mgs_set_keyring_file(cmd_parms * parms, void *dummy,
277                                   const char *arg);
278
279const char *mgs_set_enabled(cmd_parms * parms, void *dummy,
280                            const char *arg);
281const char *mgs_set_export_certificates_enabled(cmd_parms * parms, void *dummy,
282                            const char *arg);
283const char *mgs_set_priorities(cmd_parms * parms, void *dummy,
284                            const char *arg);
285const char *mgs_set_tickets(cmd_parms * parms, void *dummy,
286                            const char *arg);
287                           
288const char *mgs_set_require_section(cmd_parms *cmd,
289                                    void *mconfig, const char *arg);
290void *mgs_config_server_create(apr_pool_t * p, server_rec * s);
291
292void *mgs_config_dir_merge(apr_pool_t *p, void *basev, void *addv);
293
294void *mgs_config_dir_create(apr_pool_t *p, char *dir);
295
296const char *mgs_set_require_bytecode(cmd_parms *cmd,
297                                    void *mconfig, const char *arg);
298
299mgs_srvconf_rec* mgs_find_sni_server(gnutls_session_t session);
300
301/* mod_gnutls Hooks. */
302
303int mgs_hook_pre_config(apr_pool_t * pconf,
304                        apr_pool_t * plog, apr_pool_t * ptemp);
305
306int mgs_hook_post_config(apr_pool_t * p, apr_pool_t * plog,
307                         apr_pool_t * ptemp,
308                         server_rec * base_server);
309
310void mgs_hook_child_init(apr_pool_t *p, server_rec *s);
311
312const char *mgs_hook_http_scheme(const request_rec * r);
313
314apr_port_t mgs_hook_default_port(const request_rec * r);
315
316int mgs_hook_pre_connection(conn_rec * c, void *csd);
317
318int mgs_hook_fixups(request_rec *r);
319
320int mgs_hook_authz(request_rec *r);
321
322int mgs_authz_lua(request_rec* r);
323
324#endif /*  __mod_gnutls_h_inc */
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