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
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
|
/*
* ox.c
* vim: expandtab:ts=4:sts=4:sw=4
*
* Copyright (C) 2020 Stefan Kropp <stefan@debxwoody.de>
*
* This file is part of Profanity.
*
* Profanity 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.
*
* Profanity 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 Profanity. If not, see <https://www.gnu.org/licenses/>.
*
* In addition, as a special exception, the copyright holders give permission to
* link the code of portions of this program with the OpenSSL library under
* certain conditions as described in each individual source file, and
* distribute linked combinations including the two.
*
* You must obey the GNU General Public License in all respects for all of the
* code used other than OpenSSL. If you modify file(s) with this exception, you
* may extend this exception to your version of the file(s), but you are not
* obligated to do so. If you do not wish to do so, delete this exception
* statement from your version. If you delete this exception statement from all
* source files in the program, then also delete it here.
*
*/
#include "config.h"
#include <glib.h>
#include <assert.h>
#include "log.h"
#include "ui/ui.h"
#include "xmpp/connection.h"
#include "xmpp/stanza.h"
#include "pgp/gpg.h"
#ifdef HAVE_LIBGPGME
#define KEYID_LENGTH 40
static void _ox_metadata_node__public_key(const char* const fingerprint);
static int _ox_metadata_result(xmpp_conn_t* const conn, xmpp_stanza_t* const stanza, void* const userdata);
static void _ox_request_public_key(const char* const jid, const char* const fingerprint);
static int _ox_public_key_result(xmpp_conn_t* const conn, xmpp_stanza_t* const stanza, void* const userdata);
/*!
* \brief Current Date and Time.
*
* XEP-0082: XMPP Date and Time Profiles
* https://xmpp.org/extensions/xep-0082.html
*
* \return YYYY-MM-DDThh:mm:ssZ
*
*/
static char* _gettimestamp();
/*!
*
<pre>
<iq type='set' from='juliet@example.org/balcony' id='publish1'>
<pubsub xmlns='http://jabber.org/protocol/pubsub'>
<publish node='urn:xmpp:openpgp:0:public-keys:123456789ABCDEF1234567891238484848484848'>
<item id='2020-01-21T10:46:21Z'>
<pubkey xmlns='urn:xmpp:openpgp:0'>
<data>
BASE64_OPENPGP_PUBLIC_KEY
</data>
</pubkey>
</item>
</publish>
</pubsub>
</iq>
</pre>
*
*/
gboolean
ox_announce_public_key(const char* const filename)
{
assert(filename);
cons_show("Announce OpenPGP Key for OX %s ...", filename);
log_info("[OX] Announce OpenPGP Key of OX: %s", filename);
// key the key and the fingerprint via GnuPG from file
char* key = NULL;
char* fp = NULL;
p_ox_gpg_readkey(filename, &key, &fp);
if (!(key && fp)) {
cons_show("Error during OpenPGP OX announce. See log file for more information");
return FALSE;
}
log_info("[OX] Announce OpenPGP Key for Fingerprint: %s", fp);
xmpp_ctx_t* const ctx = connection_get_ctx();
char* id = xmpp_uuid_gen(ctx);
xmpp_stanza_t* iq = xmpp_iq_new(ctx, STANZA_TYPE_SET, id);
xmpp_stanza_set_from(iq, xmpp_conn_get_jid(connection_get_conn()));
xmpp_stanza_t* pubsub = xmpp_stanza_new(ctx);
xmpp_stanza_set_name(pubsub, STANZA_NAME_PUBSUB);
xmpp_stanza_set_ns(pubsub, XMPP_FEATURE_PUBSUB);
GString* node_name = g_string_new(STANZA_NS_OPENPGP_0_PUBLIC_KEYS);
g_string_append(node_name, ":");
g_string_append(node_name, fp);
xmpp_stanza_t* publish = xmpp_stanza_new(ctx);
xmpp_stanza_set_name(publish, STANZA_NAME_PUBLISH);
xmpp_stanza_set_attribute(publish, STANZA_ATTR_NODE, node_name->str);
xmpp_stanza_t* item = xmpp_stanza_new(ctx);
xmpp_stanza_set_name(item, STANZA_NAME_ITEM);
char* timestamp = _gettimestamp();
xmpp_stanza_set_attribute(item, STANZA_ATTR_ID, timestamp);
free(timestamp);
xmpp_stanza_t* pubkey = xmpp_stanza_new(ctx);
xmpp_stanza_set_name(pubkey, STANZA_NAME_PUPKEY);
xmpp_stanza_set_ns(pubkey, STANZA_NS_OPENPGP_0);
xmpp_stanza_t* data = xmpp_stanza_new(ctx);
xmpp_stanza_set_name(data, STANZA_NAME_DATA);
xmpp_stanza_t* keydata = xmpp_stanza_new(ctx);
xmpp_stanza_set_text(keydata, key);
xmpp_stanza_add_child(data, keydata);
xmpp_stanza_add_child(pubkey, data);
xmpp_stanza_add_child(item, pubkey);
xmpp_stanza_add_child(publish, item);
xmpp_stanza_add_child(pubsub, publish);
xmpp_stanza_add_child(iq, pubsub);
xmpp_send(connection_get_conn(), iq);
_ox_metadata_node__public_key(fp);
return TRUE;
}
/*!
* <pre>
<iq from='romeo@example.org/orchard'
to='juliet@example.org'
type='get'
id='getmeta'>
<pubsub xmlns='http://jabber.org/protocol/pubsub'>
<items node='urn:xmpp:openpgp:0:public-keys'/>
</pubsub>
</iq>
* </pre>
*
*/
void
ox_discover_public_key(const char* const jid)
{
assert(jid && strlen(jid) > 0);
log_info("[OX] Discovering Public Key for %s", jid);
cons_show("Discovering Public Key for %s", jid);
// iq
xmpp_ctx_t* const ctx = connection_get_ctx();
char* id = xmpp_uuid_gen(ctx);
xmpp_stanza_t* iq = xmpp_iq_new(ctx, STANZA_TYPE_GET, id);
xmpp_stanza_set_from(iq, xmpp_conn_get_jid(connection_get_conn()));
xmpp_stanza_set_to(iq, jid);
// pubsub
xmpp_stanza_t* pubsub = xmpp_stanza_new(ctx);
xmpp_stanza_set_name(pubsub, STANZA_NAME_PUBSUB);
xmpp_stanza_set_ns(pubsub, XMPP_FEATURE_PUBSUB);
// items
xmpp_stanza_t* items = xmpp_stanza_new(ctx);
xmpp_stanza_set_name(items, STANZA_NAME_ITEMS);
xmpp_stanza_set_attribute(items, STANZA_ATTR_NODE, STANZA_NS_OPENPGP_0_PUBLIC_KEYS);
xmpp_stanza_add_child(pubsub, items);
xmpp_stanza_add_child(iq, pubsub);
xmpp_id_handler_add(connection_get_conn(), _ox_metadata_result, id, strdup(jid));
xmpp_send(connection_get_conn(), iq);
xmpp_stanza_release(iq);
}
void
ox_request_public_key(const char* const jid, const char* const fingerprint)
{
_ox_request_public_key(jid, fingerprint);
}
/*!
*
*
*
<pre>
<iq type='set' from='juliet@example.org/balcony' id='publish1'>
<pubsub xmlns='http://jabber.org/protocol/pubsub'>
<publish node='urn:xmpp:openpgp:0:public-keys'>
<item>
<public-keys-list xmlns='urn:xmpp:openpgp:0'>
<pubkey-metadata
v4-fingerprint='1234512345678122ABCDE2222222222222222222'
date='2018-03-01T15:26:12Z'
/>
<pubkey-metadata
v4-fingerprint='1234ABCD1234409865ABCD234482728939483472'
date='1953-05-16T12:00:00Z'
/>
</public-keys-list>
</item>
</publish>
</pubsub>
</iq>
</pre>
*
*/
void
_ox_metadata_node__public_key(const char* const fingerprint)
{
log_info("Announce OpenPGP metadata: %s", fingerprint);
assert(fingerprint);
assert(strlen(fingerprint) == KEYID_LENGTH);
// iq
xmpp_ctx_t* const ctx = connection_get_ctx();
char* id = xmpp_uuid_gen(ctx);
xmpp_stanza_t* iq = xmpp_iq_new(ctx, STANZA_TYPE_SET, id);
xmpp_stanza_set_from(iq, xmpp_conn_get_jid(connection_get_conn()));
// pubsub
xmpp_stanza_t* pubsub = xmpp_stanza_new(ctx);
xmpp_stanza_set_name(pubsub, STANZA_NAME_PUBSUB);
xmpp_stanza_set_ns(pubsub, XMPP_FEATURE_PUBSUB);
// publish
xmpp_stanza_t* publish = xmpp_stanza_new(ctx);
xmpp_stanza_set_name(publish, STANZA_NAME_PUBLISH);
xmpp_stanza_set_attribute(publish, STANZA_ATTR_NODE, STANZA_NS_OPENPGP_0_PUBLIC_KEYS);
// item
xmpp_stanza_t* item = xmpp_stanza_new(ctx);
xmpp_stanza_set_name(item, STANZA_NAME_ITEM);
// public-keys-list
xmpp_stanza_t* publickeyslist = xmpp_stanza_new(ctx);
xmpp_stanza_set_name(publickeyslist, STANZA_NAME_PUBLIC_KEYS_LIST);
xmpp_stanza_set_ns(publickeyslist, STANZA_NS_OPENPGP_0);
// pubkey-metadata
xmpp_stanza_t* pubkeymetadata = xmpp_stanza_new(ctx);
xmpp_stanza_set_name(pubkeymetadata, STANZA_NAME_PUBKEY_METADATA);
xmpp_stanza_set_attribute(pubkeymetadata, STANZA_ATTR_V4_FINGERPRINT, fingerprint);
xmpp_stanza_set_attribute(pubkeymetadata, STANZA_ATTR_DATE, _gettimestamp());
xmpp_stanza_add_child(publickeyslist, pubkeymetadata);
xmpp_stanza_add_child(item, publickeyslist);
xmpp_stanza_add_child(publish, item);
xmpp_stanza_add_child(pubsub, publish);
xmpp_stanza_add_child(iq, pubsub);
xmpp_send(connection_get_conn(), iq);
}
static int
_ox_metadata_result(xmpp_conn_t* const conn, xmpp_stanza_t* const stanza, void* const userdata)
{
log_debug("[OX] Processing result %s's metadata.", (char*)userdata);
if (g_strcmp0(xmpp_stanza_get_type(stanza), "result") != 0) {
log_debug("[OX] Error: Unable to load metadata of user %s - Not a stanza result type", (char*)userdata);
return FALSE;
}
// pubsub
xmpp_stanza_t* pubsub = xmpp_stanza_get_child_by_name_and_ns(stanza, STANZA_NAME_PUBSUB, XMPP_FEATURE_PUBSUB);
if (!pubsub) {
cons_show("[OX] Error: No pubsub");
return FALSE;
}
xmpp_stanza_t* items = xmpp_stanza_get_child_by_name(pubsub, STANZA_NAME_ITEMS);
if (!items) {
cons_show("[OX] Error: No items");
return FALSE;
}
xmpp_stanza_t* item = xmpp_stanza_get_child_by_name(items, STANZA_NAME_ITEM);
if (!item) {
cons_show("[OX] Error: No item");
return FALSE;
}
xmpp_stanza_t* publickeyslist = xmpp_stanza_get_child_by_name_and_ns(item, STANZA_NAME_PUBLIC_KEYS_LIST, STANZA_NS_OPENPGP_0);
if (!publickeyslist) {
cons_show("[OX] Error: No publickeyslist");
return FALSE;
}
xmpp_stanza_t* pubkeymetadata = xmpp_stanza_get_children(publickeyslist);
while (pubkeymetadata) {
const char* fingerprint = xmpp_stanza_get_attribute(pubkeymetadata, STANZA_ATTR_V4_FINGERPRINT);
if (strlen(fingerprint) == KEYID_LENGTH) {
cons_show(fingerprint);
} else {
cons_show("OX: Wrong char size of public key");
log_error("[OX] Wrong chat size of public key %s", fingerprint);
}
pubkeymetadata = xmpp_stanza_get_next(pubkeymetadata);
}
return FALSE;
}
/*!
*
* <pre>
<iq from='romeo@example.org/orchard'
to='juliet@example.org'
type='get'
id='getpub'>
<pubsub xmlns='http://jabber.org/protocol/pubsub'>
<items node='urn:xmpp:openpgp:0:public-keys:1234567890ABCDF12349ABCD1293848292983833'
max_items='1'/>
</pubsub>
</iq>
* </pre>
*/
void
_ox_request_public_key(const char* const jid, const char* const fingerprint)
{
assert(jid);
assert(fingerprint);
if (strlen(fingerprint) != KEYID_LENGTH) {
cons_show_error("Invalid fingerprint length for: %s", fingerprint);
}
cons_show("Requesting Public Key %s for %s", fingerprint, jid);
log_info("[OX] Request %s's public key %s.", jid, fingerprint);
// iq
xmpp_ctx_t* const ctx = connection_get_ctx();
char* id = xmpp_uuid_gen(ctx);
xmpp_stanza_t* iq = xmpp_iq_new(ctx, STANZA_TYPE_GET, id);
xmpp_stanza_set_from(iq, xmpp_conn_get_jid(connection_get_conn()));
xmpp_stanza_set_to(iq, jid);
// pubsub
xmpp_stanza_t* pubsub = xmpp_stanza_new(ctx);
xmpp_stanza_set_name(pubsub, STANZA_NAME_PUBSUB);
xmpp_stanza_set_ns(pubsub, XMPP_FEATURE_PUBSUB);
// items
GString* node_name = g_string_new(STANZA_NS_OPENPGP_0_PUBLIC_KEYS);
g_string_append(node_name, ":");
g_string_append(node_name, fingerprint);
xmpp_stanza_t* items = xmpp_stanza_new(ctx);
xmpp_stanza_set_name(items, STANZA_NAME_ITEMS);
xmpp_stanza_set_attribute(items, STANZA_ATTR_NODE, node_name->str);
xmpp_stanza_set_attribute(items, "max_items", "1");
xmpp_stanza_add_child(pubsub, items);
xmpp_stanza_add_child(iq, pubsub);
xmpp_id_handler_add(connection_get_conn(), _ox_public_key_result, id, NULL);
xmpp_send(connection_get_conn(), iq);
}
/*!
*
* <pre>
<iq from='juliet@example.org'
to='romeo@example.org/orchard'
type='result'
id='getpub'>
<pubsub xmlns='http://jabber.org/protocol/pubsub'>
<items node='urn:xmpp:openpgp:0:public-keys:123454678819283823ABCDEF1234566789001234'>
<item id='2020-01-21T10:46:21Z'>
<pubkey xmlns='urn:xmpp:openpgp:0'>
<data>
BASE64_OPENPGP_PUBLIC_KEY
</data>
</pubkey>
</item>
</items>
</pubsub>
</iq>
* </pre>
*/
int
_ox_public_key_result(xmpp_conn_t* const conn, xmpp_stanza_t* const stanza, void* const userdata)
{
log_debug("[OX] Processing result public key");
if (g_strcmp0(xmpp_stanza_get_type(stanza), "result") != 0) {
cons_show("Public Key import failed. Check log for details.");
log_error("[OX] Public Key response type is wrong");
return FALSE;
}
// pubsub
xmpp_stanza_t* pubsub = xmpp_stanza_get_child_by_name_and_ns(stanza, STANZA_NAME_PUBSUB, XMPP_FEATURE_PUBSUB);
if (!pubsub) {
cons_show("Public Key import failed. Check log for details.");
log_error("[OX] Public key request response failed: No <pubsub/>");
return FALSE;
}
xmpp_stanza_t* items = xmpp_stanza_get_child_by_name(pubsub, STANZA_NAME_ITEMS);
if (!items) {
cons_show("Public Key import failed. Check log for details.");
log_error("[OX] Public key request response failed: No <items/>");
return FALSE;
}
xmpp_stanza_t* item = xmpp_stanza_get_child_by_name(items, STANZA_NAME_ITEM);
if (!item) {
cons_show("Public Key import failed. Check log for details.");
log_error("[OX] Public key request response failed: No <item/>");
return FALSE;
}
xmpp_stanza_t* pubkey = xmpp_stanza_get_child_by_name_and_ns(item, STANZA_NAME_PUPKEY, STANZA_NS_OPENPGP_0);
if (!pubkey) {
cons_show("Public Key import failed. Check log for details.");
log_error("[OX] Public key request response failed: No <pubkey/>");
return FALSE;
}
xmpp_stanza_t* data = xmpp_stanza_get_child_by_name(pubkey, STANZA_NAME_DATA);
if (!data) {
log_error("[OX] No data");
}
char* base64_data = xmpp_stanza_get_text(data);
if (base64_data) {
log_debug("Key data: %s", base64_data);
if (p_ox_gpg_import(base64_data)) {
cons_show("Public Key imported");
} else {
cons_show("Public Key import failed. Check log for details.");
}
free(base64_data);
}
return FALSE;
}
// Date and Time (XEP-0082)
char*
_gettimestamp()
{
time_t now = time(NULL);
struct tm* tm = localtime(&now);
char buf[255];
strftime(buf, sizeof(buf), "%FT%T", tm);
GString* d = g_string_new(buf);
g_string_append(d, "Z");
return strdup(d->str);
}
#endif // HAVE_LIBGPGME
|