├── .gitignore
├── LICENSE
├── Makefile.am
├── README.md
├── configure.ac
├── installer.nsi
├── src
├── Makefile.am
└── pidgin-gpg.c
├── win32.sh
└── win32libs
├── libglib-2.0.dll
├── libgpg-error.dll
├── libgpgme.dll
└── libpurple.dll
/.gitignore:
--------------------------------------------------------------------------------
1 | *~
--------------------------------------------------------------------------------
/LICENSE:
--------------------------------------------------------------------------------
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575 | Foundation. If the Program does not specify a version number of the
576 | GNU General Public License, you may choose any version ever published
577 | by the Free Software Foundation.
578 |
579 | If the Program specifies that a proxy can decide which future
580 | versions of the GNU General Public License can be used, that proxy's
581 | public statement of acceptance of a version permanently authorizes you
582 | to choose that version for the Program.
583 |
584 | Later license versions may give you additional or different
585 | permissions. However, no additional obligations are imposed on any
586 | author or copyright holder as a result of your choosing to follow a
587 | later version.
588 |
589 | 15. Disclaimer of Warranty.
590 |
591 | THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
592 | APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
593 | HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
594 | OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
595 | THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
596 | PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
597 | IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
598 | ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
599 |
600 | 16. Limitation of Liability.
601 |
602 | IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
603 | WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
604 | THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
605 | GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
606 | USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
607 | DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
608 | PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
609 | EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
610 | SUCH DAMAGES.
611 |
612 | 17. Interpretation of Sections 15 and 16.
613 |
614 | If the disclaimer of warranty and limitation of liability provided
615 | above cannot be given local legal effect according to their terms,
616 | reviewing courts shall apply local law that most closely approximates
617 | an absolute waiver of all civil liability in connection with the
618 | Program, unless a warranty or assumption of liability accompanies a
619 | copy of the Program in return for a fee.
620 |
621 | END OF TERMS AND CONDITIONS
622 |
623 | How to Apply These Terms to Your New Programs
624 |
625 | If you develop a new program, and you want it to be of the greatest
626 | possible use to the public, the best way to achieve this is to make it
627 | free software which everyone can redistribute and change under these terms.
628 |
629 | To do so, attach the following notices to the program. It is safest
630 | to attach them to the start of each source file to most effectively
631 | state the exclusion of warranty; and each file should have at least
632 | the "copyright" line and a pointer to where the full notice is found.
633 |
634 | {one line to give the program's name and a brief idea of what it does.}
635 | Copyright (C) {year} {name of author}
636 |
637 | This program is free software: you can redistribute it and/or modify
638 | it under the terms of the GNU General Public License as published by
639 | the Free Software Foundation, either version 3 of the License, or
640 | (at your option) any later version.
641 |
642 | This program is distributed in the hope that it will be useful,
643 | but WITHOUT ANY WARRANTY; without even the implied warranty of
644 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
645 | GNU General Public License for more details.
646 |
647 | You should have received a copy of the GNU General Public License
648 | along with this program. If not, see .
649 |
650 | Also add information on how to contact you by electronic and paper mail.
651 |
652 | If the program does terminal interaction, make it output a short
653 | notice like this when it starts in an interactive mode:
654 |
655 | {project} Copyright (C) {year} {fullname}
656 | This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
657 | This is free software, and you are welcome to redistribute it
658 | under certain conditions; type `show c' for details.
659 |
660 | The hypothetical commands `show w' and `show c' should show the appropriate
661 | parts of the General Public License. Of course, your program's commands
662 | might be different; for a GUI interface, you would use an "about box".
663 |
664 | You should also get your employer (if you work as a programmer) or school,
665 | if any, to sign a "copyright disclaimer" for the program, if necessary.
666 | For more information on this, and how to apply and follow the GNU GPL, see
667 | .
668 |
669 | The GNU General Public License does not permit incorporating your program
670 | into proprietary programs. If your program is a subroutine library, you
671 | may consider it more useful to permit linking proprietary applications with
672 | the library. If this is what you want to do, use the GNU Lesser General
673 | Public License instead of this License. But first, please read
674 | .
675 |
--------------------------------------------------------------------------------
/Makefile.am:
--------------------------------------------------------------------------------
1 | SUBDIRS = src
2 |
--------------------------------------------------------------------------------
/README.md:
--------------------------------------------------------------------------------
1 | pidgin-gpg
2 | ==========
3 |
4 | Building
5 | --------
6 | apt install libpurple-dev libgpgme11-dev
7 | autoreconf -i
8 | ./configure
9 | make
10 | mkdir -p ~/.purple/plugins
11 | cp src/.libs/pidgin_gpg.so ~/.purple/plugins/
12 |
13 | Usage
14 | -----
15 | Select Tools > Plugins, and enable the GPG/OpenGPG plugin. Select
16 | configure and choose your GPG key.
17 |
18 | gpg-agent needs to be enabled for this plugin to work properly. You
19 | may need to restart pidgin to be prompted for the key passphrase after
20 | enabling this plugin.
21 |
22 | About
23 | -----
24 | This is not the official branch. I'm maintianing this fork simply for
25 | maintenence (the original branch did no build with recent version of
26 | autoreconf). I'm *am not* actively developing pidgin-gpg, maintly making
27 | sure it keeps working and building. Releases > 0.9 should not be confused
28 | with those of the original author (though the original author seems to
29 | have stopped all development).
30 |
--------------------------------------------------------------------------------
/configure.ac:
--------------------------------------------------------------------------------
1 | # -*- Autoconf -*-
2 | # Process this file with autoconf to produce a configure script.
3 |
4 | AC_PREREQ([2.65])
5 | AC_INIT([pidgin-gpg], [0.9], [segler_alex@web.de])
6 | AC_CONFIG_SRCDIR([src/pidgin-gpg.c])
7 | AC_CONFIG_HEADERS([config.h])
8 | AC_CONFIG_AUX_DIR([config])
9 | AM_INIT_AUTOMAKE([-Wall -Werror foreign])
10 |
11 | m4_pattern_allow([AM_PROG_AR])
12 | AM_PROG_AR
13 |
14 | # Checks for programs.
15 | AC_DISABLE_STATIC
16 | AC_PROG_LIBTOOL
17 |
18 | AC_PROG_CC
19 | AC_SYS_LARGEFILE
20 |
21 | # Checks for libraries.
22 | # PKG_CHECK_MODULES([PIDGIN], [pidgin])
23 | PKG_CHECK_MODULES([PURPLE], [purple])
24 | AM_PATH_GPGME([1.2.0])
25 |
26 | # Checks for header files.
27 | AC_CHECK_HEADERS([locale.h string.h])
28 |
29 | # Checks for typedefs, structures, and compiler characteristics.
30 |
31 | # Checks for library functions.
32 | AC_CHECK_FUNCS([setlocale strdup])
33 |
34 | AC_CONFIG_FILES([Makefile src/Makefile])
35 | AC_OUTPUT
36 |
--------------------------------------------------------------------------------
/installer.nsi:
--------------------------------------------------------------------------------
1 | ; The name of the installer
2 | Name "Pidgin-GPG"
3 |
4 | ; The file to write
5 | OutFile "PidginGPG.exe"
6 |
7 | ; The default installation directory
8 | InstallDir $PROGRAMFILES\Pidgin-GPG
9 |
10 | ; Request application privileges for Windows Vista
11 | RequestExecutionLevel admin
12 |
13 | ;--------------------------------
14 | ; Pages
15 | Page components
16 | Page instfiles
17 | ;--------------------------------
18 |
19 | ; The stuff to install
20 | Section "PidginGPG"
21 | SectionIn RO
22 |
23 | ReadRegStr $0 HKLM SOFTWARE\GNU\GnuPG "Install Directory"
24 | IfErrors onerror_nogpg
25 | DetailPrint "Found GnuPG at: $0"
26 |
27 | ReadRegStr $1 HKLM SOFTWARE\Pidgin ""
28 | IfErrors onerror_nopidgin
29 | DetailPrint "Found Pidgin at: $1"
30 |
31 | ReadRegStr $2 HKLM "SYSTEM\CurrentControlSet\Control\Session Manager\Environment" "Path"
32 | WriteRegStr HKLM "SYSTEM\CurrentControlSet\Control\Session Manager\Environment" "Path" "$2;$0"
33 | DetailPrint "Added gnupg directory to path"
34 |
35 | ; Set output path to the installation directory.
36 | SetOutPath "$1\plugins"
37 |
38 | ; Put file there
39 | File "src/.libs/pidgin_gpg.dll"
40 | Goto finished
41 |
42 | onerror_nogpg:
43 | DetailPrint "GPG not found"
44 | Goto onerror
45 |
46 | onerror_nopidgin:
47 | DetailPrint "Pidgin not found"
48 | Goto onerror
49 |
50 | onerror:
51 | Abort "could not install, see details for more information"
52 |
53 | finished:
54 | SectionEnd
55 |
56 |
57 |
--------------------------------------------------------------------------------
/src/Makefile.am:
--------------------------------------------------------------------------------
1 | plugin_LTLIBRARIES = pidgin_gpg.la
2 |
3 | plugindir = ${libdir}/pidgin
4 |
5 | pidgin_gpg_la_SOURCES = pidgin-gpg.c
6 | pidgin_gpg_la_CFLAGS = $(PURPLE_CFLAGS) $(GPGME_CFLAGS) -I/usr/include
7 | pidgin_gpg_la_LDFLAGS = -module -avoid-version $(PURPLE_LIBS) $(GPGME_LIBS)
8 |
--------------------------------------------------------------------------------
/src/pidgin-gpg.c:
--------------------------------------------------------------------------------
1 | /*
2 | * Pidgin - GPG Pidgin Plugin
3 | *
4 | * Copyright (C) 2010, Aerol
5 | * Alexander Murauer
6 | *
7 | * This program is free software: you can redistribute it and/or modify
8 | * it under the terms of the GNU General Public License as published by
9 | * the Free Software Foundation, either version 3 of the License, or
10 | * (at your option) any later version.
11 | *
12 | * This program is distributed in the hope that it will be useful,
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 | * GNU General Public License for more details.
16 | *
17 | * You should have received a copy of the GNU General Public License
18 | * along with this program. If not, see .
19 | *
20 | */
21 |
22 | #define PURPLE_PLUGINS
23 |
24 | #ifndef TRUE
25 | #define TRUE (1==1)
26 | #endif
27 | #ifndef FALSE
28 | #define FALSE (1==0)
29 | #endif
30 |
31 | #define PLUGIN_ID "core-segler-pidgin-gpg"
32 | #define PREF_ROOT "/plugins/core/core-segler-pidgin-gpg"
33 | #define PREF_MY_KEY "/plugins/core/core-segler-pidgin-gpg/my_key_fpr"
34 |
35 | #include "../config.h"
36 |
37 | #include
38 | #include
39 |
40 | #include "notify.h"
41 | #include "plugin.h"
42 | #include "version.h"
43 |
44 | #include
45 | #include
46 | #include
47 |
48 | #include
49 |
50 | static GHashTable *list_fingerprints = NULL;
51 |
52 | struct list_item{
53 | // the key-fingerprint of the receiver
54 | char* fpr;
55 | // true if connection mode is encrypted
56 | int mode_sec;
57 | // old mode_sec value, used to check if user has already been informed on possible mode_sec change
58 | int mode_sec_old;
59 | };
60 |
61 | /* ------------------
62 | * xmlnode.h lacks a method for clearing the data of a node
63 | * ------------------ */
64 | void
65 | xmlnode_clear_data(xmlnode *node)
66 | {
67 | xmlnode *data_node, *sibling = NULL;
68 |
69 | g_return_if_fail(node != NULL);
70 |
71 | data_node = node->child;
72 | while (data_node) {
73 | if(data_node->type == XMLNODE_TYPE_DATA)
74 | {
75 | if (node->lastchild == data_node) {
76 | node->lastchild = sibling;
77 | }
78 | if (sibling == NULL) {
79 | node->child = data_node->next;
80 | xmlnode_free(data_node);
81 | data_node = node->child;
82 | } else {
83 | sibling->next = data_node->next;
84 | xmlnode_free(data_node);
85 | data_node = sibling->next;
86 | }
87 | }else{
88 | sibling = data_node;
89 | data_node = data_node->next;
90 | }
91 | }
92 | }
93 |
94 | /* ------------------
95 | * armor a string
96 | * FREE MEMORY AFTER USAGE OF RETURN VALUE!
97 | * ------------------ */
98 | static char* str_armor(const char* unarmored)
99 | {
100 | char* header = "-----BEGIN PGP SIGNATURE-----\n\n";
101 | char* footer = "\n-----END PGP SIGNATURE-----";
102 |
103 | char* buffer = malloc(strlen(header)+strlen(footer)+strlen(unarmored)+1);
104 | strcpy(buffer, header);
105 | strcat(buffer, unarmored);
106 | strcat(buffer, footer);
107 | return buffer;
108 | }
109 |
110 | /* ------------------
111 | * unarmor a string
112 | * FREE MEMORY AFTER USAGE OF RETURN VALUE!
113 | * ------------------ */
114 | static char* str_unarmor(const char* armored)
115 | {
116 | const char* header = "-----BEGIN PGP MESSAGE-----";
117 | const char* footer = "-----END PGP MESSAGE-----";
118 | const char* signatureHeader = "-----BEGIN PGP SIGNATURE-----";
119 | const char* signatureFooter = "-----END PGP SIGNATURE-----";
120 | const char* begin;
121 | const char* end;
122 | const char* tmp;
123 | char* unarmored = NULL;
124 | unsigned unarmoredIndex = 0;
125 |
126 | begin = end = (char*)armored;
127 | if( begin == NULL )
128 | return NULL;
129 |
130 | // Search for the message header
131 | if( ( tmp = strstr( begin, header ) ) != NULL )
132 | begin == tmp;
133 | // Search for the signature header
134 | else if( ( begin = strstr( begin, signatureHeader ) ) != NULL ) {
135 | header = signatureHeader;
136 | footer = signatureFooter;
137 | } else
138 | return NULL;
139 | // Skip the header
140 | begin += strlen( header ) * sizeof( char );
141 | // Search the footer
142 | if( ( end = strstr( begin, footer ) ) == NULL )
143 | return NULL;
144 | // Skip newline chars before the footer
145 | while( *( end - 1 * sizeof( char ) ) == '\r' || *( end - 1 * sizeof( char ) ) == '\n' )
146 | end -= sizeof( char );
147 | if( end <= begin )
148 | return NULL;
149 | // Skip until the last occurance of an empty line before the end
150 | while( ( tmp = strstr( begin, "\n\n" ) ) != NULL && tmp < end )
151 | begin = tmp + 2 * sizeof( char );
152 | while( ( tmp = strstr( begin, "\r\n\r\n" ) ) != NULL && tmp < end )
153 | begin = tmp + 4 * sizeof( char );
154 | if( end <= begin )
155 | return NULL;
156 |
157 | // Copy the unarmored cypher block, without any newline chars
158 | unarmored = (char*)malloc( ( end - begin + 1 ) * sizeof( char ) );
159 | while( begin < end ) {
160 | if( *begin != '\r' && *begin != '\n' )
161 | unarmored[ unarmoredIndex++ ] = *begin;
162 | begin++;
163 | }
164 | unarmored[ unarmoredIndex ] = 0;
165 |
166 | return unarmored;
167 | }
168 |
169 | /* ------------------
170 | * strips resource info from jid
171 | * FREE MEMORY AFTER USAGE OF RETURN VALUE!
172 | * ------------------ */
173 | static char* get_bare_jid(const char* jid)
174 | {
175 | int len = strcspn(jid,"/");
176 | char* str = malloc(len+1);
177 | strncpy(str,jid,len);
178 | str[len] = 0;
179 | return str;
180 | }
181 |
182 | /* ------------------
183 | * check if a key is locally available
184 | * ------------------ */
185 | int is_key_available(const char* fpr,int secret, int servermode, char** userid)
186 | {
187 | gpgme_error_t error;
188 | gpgme_ctx_t ctx;
189 | gpgme_key_t key;
190 | gpgme_key_t key_arr[2];
191 | gpgme_keylist_mode_t current_keylist_mode;
192 | key_arr[0] = NULL;
193 | key_arr[1] = NULL;
194 |
195 | // connect to gpgme
196 | gpgme_check_version (NULL);
197 | error = gpgme_new(&ctx);
198 | if (error)
199 | {
200 | purple_debug_error(PLUGIN_ID,"gpgme_new failed: %s %s\n",gpgme_strsource (error), gpgme_strerror (error));
201 | return FALSE;
202 | }
203 |
204 | // set to server search mode if servermode == TRUE
205 | if (servermode == TRUE)
206 | {
207 | purple_debug_info(PLUGIN_ID,"set keylist mode to server\n");
208 | current_keylist_mode = gpgme_get_keylist_mode(ctx);
209 | gpgme_set_keylist_mode(ctx,(current_keylist_mode | GPGME_KEYLIST_MODE_EXTERN) &(~GPGME_KEYLIST_MODE_LOCAL));
210 | }
211 |
212 | // get key by fingerprint
213 | error = gpgme_get_key(ctx,fpr,&key,secret);
214 | if (error || !key)
215 | {
216 | purple_debug_error(PLUGIN_ID,"gpgme_get_key failed: %s %s\n",gpgme_strsource (error), gpgme_strerror (error));
217 | gpgme_release (ctx);
218 | return FALSE;
219 | }
220 |
221 | // if we have parameter, tell caller about userid
222 | if (userid != NULL)
223 | {
224 | *userid = g_strdup(key->uids->uid);
225 | }
226 |
227 | // import key
228 | key_arr[0] = key;
229 | error = gpgme_op_import_keys (ctx, key_arr);
230 | if (error)
231 | {
232 | purple_debug_error(PLUGIN_ID,"gpgme_op_import_keys failed: %s %s\n",gpgme_strsource (error), gpgme_strerror (error));
233 | gpgme_release (ctx);
234 | return FALSE;
235 | }
236 |
237 | // close gpgme connection
238 | gpgme_release (ctx);
239 |
240 | // we got the key, YEAH :)
241 | return TRUE;
242 | }
243 |
244 | /* ------------------
245 | * get ascii armored public key
246 | * FREE MEMORY AFTER USAGE OF RETURN VALUE!
247 | * ------------------ */
248 | char* get_key_armored(const char* fpr)
249 | { gpgme_error_t error;
250 | gpgme_ctx_t ctx;
251 | gpgme_data_t key_data;
252 | gpgme_key_t key;
253 | gpgme_key_t key_arr[2];
254 | key_arr[0] = key_arr[1] = NULL;
255 | size_t len = 0;
256 | char* key_str = NULL;
257 | char* key_str_dup = NULL;
258 |
259 | // connect to gpgme
260 | gpgme_check_version (NULL);
261 | error = gpgme_new(&ctx);
262 | if (error)
263 | {
264 | purple_debug_error(PLUGIN_ID,"gpgme_new failed: %s %s\n",gpgme_strsource (error), gpgme_strerror (error));
265 | return NULL;
266 | }
267 |
268 | // get key by fingerprint
269 | error = gpgme_get_key(ctx,fpr,&key,0);
270 | if (error || !key)
271 | {
272 | purple_debug_error(PLUGIN_ID,"gpgme_get_key failed: %s %s\n",gpgme_strsource (error), gpgme_strerror (error));
273 | gpgme_release (ctx);
274 | return NULL;
275 | }
276 | key_arr[0] = key;
277 |
278 | // create data containers
279 | gpgme_data_new(&key_data);
280 |
281 | // export key
282 | gpgme_set_armor(ctx,1);
283 | error = gpgme_op_export_keys (ctx, key_arr, 0, key_data);
284 | if (error)
285 | {
286 | purple_debug_error(PLUGIN_ID,"gpgme_op_export_keys failed: %s %s\n",gpgme_strsource (error), gpgme_strerror (error));
287 | gpgme_release (ctx);
288 | return NULL;
289 | }
290 |
291 | // release memory for data containers
292 | key_str = gpgme_data_release_and_get_mem(key_data,&len);
293 | if (key_str != NULL)
294 | {
295 | key_str[len] = 0;
296 | key_str_dup = g_strdup(key_str);
297 | }
298 | gpgme_free(key_str);
299 | // close gpgme connection
300 | gpgme_release (ctx);
301 |
302 | // we got the key, YEAH :)
303 | return key_str_dup;
304 | }
305 |
306 | /* ------------------
307 | * import ascii armored key
308 | * ------------------ */
309 | int import_key(char* armored_key)
310 | {
311 | gpgme_error_t error;
312 | gpgme_ctx_t ctx;
313 | gpgme_data_t keydata;
314 | gpgme_import_result_t result;
315 |
316 | // connect to gpgme
317 | gpgme_check_version (NULL);
318 | error = gpgme_new(&ctx);
319 | if (error)
320 | {
321 | purple_debug_error(PLUGIN_ID,"gpgme_new failed: %s %s\n",gpgme_strsource (error), gpgme_strerror (error));
322 | return FALSE;
323 | }
324 |
325 | purple_debug_info(PLUGIN_ID,"try to import key: %s\n",armored_key);
326 | // create data containers
327 | gpgme_data_new_from_mem (&keydata, armored_key,strlen(armored_key),1);
328 |
329 | // import key, ascii armored
330 | gpgme_set_armor(ctx,1);
331 | error = gpgme_op_import (ctx, keydata);
332 | if (error)
333 | {
334 | purple_debug_error(PLUGIN_ID,"gpgme_op_import: %s %s\n",gpgme_strsource (error), gpgme_strerror (error));
335 | gpgme_release (ctx);
336 | return FALSE;
337 | }
338 |
339 | result = gpgme_op_import_result (ctx);
340 | purple_debug_info(PLUGIN_ID,"considered keys: %d; imported keys: %d; not imported keys: %d\n",result->considered,result->imported,result->not_imported);
341 |
342 | // release memory for data containers
343 | gpgme_data_release(keydata);
344 |
345 | // close gpgme connection
346 | gpgme_release (ctx);
347 |
348 | return TRUE;
349 | }
350 |
351 | /* ------------------
352 | * sign a plain string with the key found with fingerprint fpr
353 | * FREE MEMORY AFTER USAGE OF RETURN VALUE!
354 | * ------------------ */
355 | static char* sign(const char* plain_str,const char* fpr)
356 | {
357 | gpgme_error_t error;
358 | gpgme_ctx_t ctx;
359 | gpgme_key_t key;
360 | gpgme_data_t plain,sig;
361 | const int MAX_LEN = 10000;
362 | char *sig_str = NULL;
363 | char *sig_str_dup = NULL;
364 | size_t len = 0;
365 |
366 | // connect to gpgme
367 | gpgme_check_version (NULL);
368 | error = gpgme_new(&ctx);
369 | if (error)
370 | {
371 | purple_debug_error(PLUGIN_ID,"gpgme_new failed: %s %s\n",gpgme_strsource (error), gpgme_strerror (error));
372 | return NULL;
373 | }
374 |
375 | // get key by fingerprint
376 | error = gpgme_get_key(ctx,fpr,&key,1);
377 | if (error || !key)
378 | {
379 | purple_debug_error(PLUGIN_ID,"gpgme_get_key failed: %s %s\n",gpgme_strsource (error), gpgme_strerror (error));
380 | gpgme_release (ctx);
381 | return NULL;
382 | }
383 |
384 | // select signers
385 | gpgme_signers_clear(ctx);
386 | error = gpgme_signers_add (ctx,key);
387 | if (error)
388 | {
389 | purple_debug_error(PLUGIN_ID,"gpgme_signers_add failed: %s %s\n",gpgme_strsource (error), gpgme_strerror (error));
390 | gpgme_release (ctx);
391 | return NULL;
392 | }
393 |
394 | // create data containers
395 | gpgme_data_new_from_mem (&plain, plain_str,strlen(plain_str),1);
396 | gpgme_data_new(&sig);
397 |
398 | // sign message, ascii armored
399 | gpgme_set_armor(ctx,1);
400 | error = gpgme_op_sign(ctx,plain,sig,GPGME_SIG_MODE_DETACH);
401 | if (error)
402 | {
403 | purple_debug_error(PLUGIN_ID,"gpgme_op_sign failed: %s %s\n",gpgme_strsource (error), gpgme_strerror (error));
404 | gpgme_release (ctx);
405 | return NULL;
406 | }
407 |
408 | // release memory for data containers
409 | gpgme_data_release(plain);
410 | sig_str = gpgme_data_release_and_get_mem(sig,&len);
411 | if (sig_str != NULL)
412 | {
413 | sig_str[len] = 0;
414 | sig_str_dup = str_unarmor(sig_str);
415 | }
416 | gpgme_free(sig_str);
417 |
418 | // close gpgme connection
419 | gpgme_release (ctx);
420 |
421 | return sig_str_dup;
422 | }
423 |
424 | /* ------------------
425 | * verify a signed string with the key found with fingerprint fpr
426 | * FREE MEMORY AFTER USAGE OF RETURN VALUE!
427 | * ------------------ */
428 | static char* verify(const char* sig_str)
429 | {
430 | gpgme_error_t error;
431 | gpgme_ctx_t ctx;
432 | gpgme_data_t plain,sig,sig_text;
433 | gpgme_verify_result_t result;
434 | char* fpr = NULL;
435 | char* armored_sig_str = NULL;
436 |
437 | if (sig_str == NULL)
438 | {
439 | purple_debug_error(PLUGIN_ID,"verify got null parameter\n");
440 | return NULL;
441 | }
442 |
443 | // connect to gpgme
444 | gpgme_check_version (NULL);
445 | error = gpgme_new(&ctx);
446 | if (error)
447 | {
448 | purple_debug_error(PLUGIN_ID,"gpgme_new failed: %s %s\n",gpgme_strsource (error), gpgme_strerror (error));
449 | return NULL;
450 | }
451 |
452 | // armor sig_str
453 | armored_sig_str = str_armor(sig_str);
454 |
455 | // create data containers
456 | gpgme_data_new_from_mem (&sig, armored_sig_str,strlen(armored_sig_str),1);
457 | gpgme_data_new(&plain);
458 |
459 | // try to verify
460 | error = gpgme_op_verify(ctx,sig,NULL,plain);
461 | if (error)
462 | {
463 | purple_debug_error(PLUGIN_ID,"gpgme_op_verify failed: %s %s\n",gpgme_strsource (error), gpgme_strerror (error));
464 | gpgme_release (ctx);
465 | return NULL;
466 | }
467 |
468 | // get result
469 | result = gpgme_op_verify_result (ctx);
470 | if (result != NULL)
471 | {
472 | if (result->signatures != NULL)
473 | {
474 | // return the fingerprint of the key that made the signature
475 | fpr = g_strdup(result->signatures->fpr);
476 | }
477 | }
478 |
479 | // release memory for data containers
480 | gpgme_data_release(sig);
481 | gpgme_data_release(plain);
482 |
483 | return fpr;
484 | }
485 |
486 | /* ------------------
487 | * encrypt a plain string with the key found with fingerprint fpr
488 | * ------------------ */
489 | static char* encrypt(const char* plain_str, const char* fpr)
490 | {
491 | gpgme_error_t error;
492 | gpgme_ctx_t ctx;
493 | gpgme_key_t key;
494 | gpgme_key_t sender_key;
495 | gpgme_data_t plain,cipher;
496 | char* cipher_str = NULL;
497 | char* cipher_str_dup = NULL;
498 | size_t len;
499 | gpgme_key_t key_arr[3];
500 |
501 | key_arr[0] = NULL;
502 | key_arr[1] = NULL;
503 | key_arr[2] = NULL;
504 |
505 | // connect to gpgme
506 | gpgme_check_version (NULL);
507 | error = gpgme_new(&ctx);
508 | if (error)
509 | {
510 | purple_debug_error(PLUGIN_ID,"gpgme_new failed: %s %s\n",gpgme_strsource (error), gpgme_strerror (error));
511 | return NULL;
512 | }
513 |
514 | // get key by fingerprint
515 | error = gpgme_get_key(ctx,fpr,&key,0);
516 | if (error || !key)
517 | {
518 | purple_debug_error(PLUGIN_ID,"gpgme_get_key failed: %s %s\n",gpgme_strsource (error), gpgme_strerror (error));
519 | gpgme_release (ctx);
520 | return NULL;
521 | }
522 | key_arr[0] = key;
523 |
524 | // check if user selected a main key
525 | const char* sender_fpr = purple_prefs_get_string(PREF_MY_KEY);
526 | if ( sender_fpr != NULL && strcmp(sender_fpr,"") != 0)
527 | {
528 | // get own key by fingerprint
529 | error = gpgme_get_key(ctx,sender_fpr,&sender_key,0);
530 | if (!error && sender_key)
531 | key_arr[1] = sender_key;
532 | else
533 | purple_debug_error(PLUGIN_ID,"gpgme_get_key: sender key for fingerprint %s is missing! error: %s %s\n", sender_fpr, gpgme_strsource (error), gpgme_strerror (error) );
534 | }
535 | else
536 | purple_debug_error(PLUGIN_ID,"purple_prefs_get_string: PREF_MY_KEY was empty\n");
537 |
538 | // create data containers
539 | gpgme_data_new_from_mem (&plain, plain_str,strlen(plain_str),1);
540 | gpgme_data_new(&cipher);
541 |
542 | // encrypt, ascii armored
543 | gpgme_set_armor(ctx,1);
544 | error = gpgme_op_encrypt (ctx, key_arr,GPGME_ENCRYPT_ALWAYS_TRUST,plain,cipher);
545 | if (error)
546 | {
547 | purple_debug_error(PLUGIN_ID,"gpgme_op_encrypt failed: %s %s\n",gpgme_strsource (error), gpgme_strerror (error));
548 | gpgme_release (ctx);
549 | return NULL;
550 | }
551 |
552 | // release memory for data containers
553 | gpgme_data_release(plain);
554 | cipher_str = gpgme_data_release_and_get_mem(cipher,&len);
555 | if (cipher_str != NULL)
556 | {
557 | cipher_str_dup = str_unarmor(cipher_str);
558 | }
559 | gpgme_free(cipher_str);
560 |
561 | // close gpgme connection
562 | gpgme_release (ctx);
563 |
564 | return cipher_str_dup;
565 | }
566 |
567 | /* ------------------
568 | * decrypt a plain string with the key found with fingerprint fpr
569 | * FREE MEMORY AFTER USAGE OF RETURN VALUE
570 | * ------------------ */
571 | static char* decrypt(char* cipher_str)
572 | {
573 | gpgme_error_t error;
574 | gpgme_ctx_t ctx;
575 | gpgme_data_t plain,cipher;
576 | size_t len = 0;
577 | char* plain_str = NULL;
578 | char* plain_str_dup = NULL;
579 | char* armored_buffer;
580 |
581 | // add header and footer:
582 | armored_buffer = str_armor(cipher_str);
583 |
584 | // connect to gpgme
585 | gpgme_check_version (NULL);
586 | error = gpgme_new(&ctx);
587 | if (error)
588 | {
589 | purple_debug_error(PLUGIN_ID,"gpgme_new failed: %s %s\n",gpgme_strsource (error), gpgme_strerror (error));
590 | return NULL;
591 | }
592 |
593 | // create data containers
594 | gpgme_data_new_from_mem (&cipher, armored_buffer,strlen(armored_buffer),1);
595 | gpgme_data_new(&plain);
596 |
597 | // decrypt
598 | error = gpgme_op_decrypt(ctx,cipher,plain);
599 | if (error)
600 | {
601 | purple_debug_error(PLUGIN_ID,"gpgme_op_decrypt failed: %s %s\n",gpgme_strsource (error), gpgme_strerror (error));
602 | gpgme_release (ctx);
603 | return NULL;
604 | }
605 |
606 | // release memory for data containers
607 | gpgme_data_release(cipher);
608 | plain_str = gpgme_data_release_and_get_mem(plain,&len);
609 | if (plain_str != NULL)
610 | {
611 | plain_str[len] = 0;
612 | plain_str_dup = g_strdup(plain_str);
613 | }
614 | gpgme_free(plain_str);
615 |
616 | // close gpgme connection
617 | gpgme_release (ctx);
618 |
619 | return plain_str_dup;
620 | }
621 |
622 | /* ------------------
623 | * initialize gpgme lib on module load
624 | * ------------------ */
625 | static void init_gpgme ()
626 | {
627 | const char* version;
628 |
629 | /* Initialize the locale environment. */
630 | setlocale (LC_ALL, "");
631 | version = gpgme_check_version (NULL);
632 | purple_debug_info(PLUGIN_ID,"Found gpgme version: %s\n",version);
633 |
634 | gpgme_set_locale (NULL, LC_CTYPE, setlocale (LC_CTYPE, NULL));
635 | // For W32 portability.
636 | #ifdef LC_MESSAGES
637 | gpgme_set_locale (NULL, LC_MESSAGES, setlocale (LC_MESSAGES, NULL));
638 | #endif
639 | }
640 |
641 | static const char* NS_SIGNED = "jabber:x:signed";
642 | static const char* NS_ENC = "jabber:x:encrypted";
643 | static const char* NS_XMPP_CARBONS = "urn:xmpp:carbons:2";
644 |
645 | /* ------------------
646 | * called on received message
647 | * ------------------ */
648 | static gboolean
649 | jabber_message_received(PurpleConnection *pc, const char *type, const char *id,
650 | const char *from, const char *to, xmlnode *message)
651 | {
652 | const xmlnode* parent_node = message;
653 | xmlnode* x_node = NULL;
654 | xmlnode* body_node = NULL;
655 |
656 | if (parent_node == NULL)
657 | return FALSE;
658 |
659 | // check if message is a key
660 | body_node = xmlnode_get_child(parent_node,"body");
661 | if (body_node != NULL)
662 | {
663 | char* data = xmlnode_get_data(body_node);
664 | if (data != NULL)
665 | {
666 | char* header = "-----BEGIN PGP PUBLIC KEY BLOCK-----";
667 | if (strncmp(data,header,strlen(header)) == 0)
668 | {
669 | // if we received a ascii armored key
670 | // try to import it
671 | //purple_conversation_write(conv,"","received key",PURPLE_MESSAGE_SYSTEM | PURPLE_MESSAGE_NO_LOG,time(NULL));
672 | if (import_key(data) == TRUE)
673 | {
674 | xmlnode_clear_data(body_node);
675 | xmlnode_insert_data(body_node,"key import ok",-1);
676 | }
677 | else
678 | {
679 | xmlnode_clear_data(body_node);
680 | xmlnode_insert_data(body_node,"key import failed",-1);
681 | }
682 | }
683 | }
684 | }
685 |
686 | // check if the user with the jid=from has signed his presence
687 | char* bare_jid_own = get_bare_jid(purple_connection_get_account(pc)->username);
688 | char* bare_jid = get_bare_jid(from);
689 | // use from or to depending on whether it's a carbonated sent message
690 | if (strcmp(bare_jid,bare_jid_own) == 0)
691 | bare_jid = get_bare_jid(to);
692 | // get stored info about user
693 | struct list_item* item = g_hash_table_lookup(list_fingerprints,bare_jid);
694 | free(bare_jid);
695 | free(bare_jid_own);
696 |
697 | // We don't set item->mode_sec = FALSE here because of any received message that is not encrypted.
698 | // forwarded non-encrypted messages (receipts etc.) will otherwise disable encryption
699 |
700 | // check if message has special "x" child node => encrypted message
701 | x_node = xmlnode_get_child_with_namespace(parent_node,"x",NS_ENC);
702 | if (x_node != NULL)
703 | {
704 | purple_debug_info(PLUGIN_ID, "user %s sent us an encrypted message\n",from);
705 |
706 | // get data of "x" node
707 | char* cipher_str = xmlnode_get_data(x_node);
708 | if (cipher_str != NULL)
709 | {
710 | // try to decrypt
711 | char* plain_str = decrypt(cipher_str);
712 | if (plain_str != NULL)
713 | {
714 | //purple_debug_info(PLUGIN_ID, "decrypted message: %s\n",plain_str);
715 | // find body node
716 | xmlnode *body_node = xmlnode_get_child(parent_node,"body");
717 | if (body_node != NULL)
718 | {
719 | // clear body node data if it is found
720 | xmlnode_clear_data(body_node);
721 | }else
722 | {
723 | // add body node if it is not found
724 | body_node = xmlnode_new_child(message,"body");
725 | }
726 | // set "body" content node to decrypted string
727 | //xmlnode_insert_data(body_node,"Encrypted message: ",-1);
728 | xmlnode_insert_data(body_node,plain_str,-1);
729 |
730 | // only set to encrypted mode, if we know other users key fingerprint
731 | if (item != NULL)
732 | {
733 | // all went well, we received an encrypted message
734 | item->mode_sec = TRUE;
735 | }
736 | }else
737 | {
738 | purple_debug_error(PLUGIN_ID, "could not decrypt message!\n");
739 | }
740 | }else
741 | {
742 | purple_debug_error(PLUGIN_ID, "xml token had no data!\n");
743 | }
744 | }
745 |
746 | /* We don't want the plugin to stop processing */
747 | return FALSE;
748 | }
749 |
750 | /* ------------------
751 | * called on received presence
752 | * ------------------ */
753 | static gboolean
754 | jabber_presence_received(PurpleConnection *pc, const char *type,
755 | const char *from, xmlnode *presence)
756 | {
757 | const xmlnode* parent_node = presence;
758 | xmlnode* x_node = NULL;
759 |
760 | // check if presence has special "x" childnode
761 | x_node = xmlnode_get_child_with_namespace(parent_node,"x",NS_SIGNED);
762 | if (x_node != NULL)
763 | {
764 | // user supports openpgp encryption
765 | purple_debug_info(PLUGIN_ID, "user %s supports openpgp encryption!\n",from);
766 |
767 | char* x_node_data = xmlnode_get_data(x_node);
768 | if (x_node_data != NULL)
769 | {
770 | // try to verify
771 | char* fpr = verify(x_node_data);
772 | if (fpr != NULL)
773 | {
774 | char* bare_jid = get_bare_jid(from);
775 | purple_debug_info(PLUGIN_ID, "user %s has fingerprint %s\n",bare_jid,fpr);
776 |
777 | // add key to list
778 | struct list_item *item = malloc(sizeof(struct list_item));
779 | item->fpr = fpr;
780 | g_hash_table_replace(list_fingerprints,bare_jid,item);
781 | }else
782 | {
783 | purple_debug_error(PLUGIN_ID, "could not verify presence of user %s\n",from);
784 | }
785 | }else
786 | {
787 | purple_debug_info(PLUGIN_ID, "user %s sent empty signed presence\n",from);
788 | }
789 | }
790 |
791 | /* We don't want the plugin to stop processing */
792 | return FALSE;
793 | }
794 |
795 | /* ------------------
796 | * called on every sent packet
797 | * ------------------ */
798 | void jabber_send_signal_cb(PurpleConnection *pc, xmlnode **packet,
799 | gpointer unused)
800 | {
801 | if (NULL == packet)
802 | return;
803 |
804 | g_return_if_fail(PURPLE_CONNECTION_IS_VALID(pc));
805 |
806 | // if we are sending a presence stanza, add new child node
807 | // so others know we support openpgp
808 | if (g_str_equal((*packet)->name, "presence"))
809 | {
810 | const char* status_str = NULL;
811 | xmlnode* status_node;
812 |
813 | // check if user selected a main key
814 | const char* fpr = purple_prefs_get_string(PREF_MY_KEY);
815 | if (fpr == NULL)
816 | fpr = "";
817 | if (strcmp(fpr,"") != 0)
818 | {// user did select a key
819 | // get status message from packet
820 | status_node = xmlnode_get_child(*packet,"status");
821 | if (status_node != NULL)
822 | {
823 | status_str = xmlnode_get_data(status_node);
824 | }
825 |
826 | // sign status message
827 | if (status_str == NULL)
828 | status_str = "";
829 | purple_debug_info(PLUGIN_ID, "signing status '%s' with key %s\n",status_str,fpr);
830 |
831 | char* sig_str = sign(status_str,fpr);
832 | if (sig_str == NULL)
833 | {
834 | purple_debug_error(PLUGIN_ID,"sign failed\n");
835 | return;
836 | }
837 |
838 | // create special "x" childnode
839 | purple_debug_info(PLUGIN_ID, "sending presence with signature\n");
840 | xmlnode *x_node = xmlnode_new_child(*packet,"x");
841 | xmlnode_set_namespace(x_node, NS_SIGNED);
842 | xmlnode_insert_data(x_node, sig_str,-1);
843 | }else
844 | {
845 | purple_debug_info(PLUGIN_ID, "no key selecteded!\n");
846 | }
847 | }else
848 | if (g_str_equal((*packet)->name, "message"))
849 | {
850 | const char* to = xmlnode_get_attrib(*packet,"to");
851 | xmlnode* body_node = xmlnode_get_child(*packet,"body");
852 | if (body_node != NULL && to != NULL)
853 | {
854 | // get message
855 | char* message = g_strdup(xmlnode_get_data(body_node));
856 | char* enc_str = NULL;
857 | char* bare_jid = get_bare_jid(to);
858 |
859 | // get encryption key
860 | struct list_item *item = g_hash_table_lookup(list_fingerprints,bare_jid);
861 | if (item == NULL)
862 | {
863 | purple_debug_info(PLUGIN_ID, "there is no key for encrypting message to %s\n",bare_jid);
864 | return;
865 | }
866 | // do not encrypt if mode_sec is disabled
867 | if (item->mode_sec == FALSE)
868 | return;
869 |
870 | char* fpr_to = item->fpr;
871 | purple_debug_info(PLUGIN_ID, "found key for encryption to user %s: %s\n",bare_jid,fpr_to);
872 | free(bare_jid);
873 |
874 | // encrypt message
875 | enc_str = encrypt(message,fpr_to);
876 | if (enc_str != NULL)
877 | {
878 | // remove message from body
879 | xmlnode_clear_data(body_node);
880 | xmlnode_insert_data(body_node,"[ERROR: This message is encrypted, and you are unable to decrypt it.]",-1);
881 |
882 | // add special "x" childnode for encrypted text
883 | purple_debug_info(PLUGIN_ID, "sending encrypted message\n");
884 | xmlnode *x_node = xmlnode_new_child(*packet,"x");
885 | xmlnode_set_namespace(x_node, NS_ENC);
886 | xmlnode_insert_data(x_node, enc_str,-1);
887 | }else
888 | {
889 | purple_debug_error(PLUGIN_ID, "could not encrypt message\n");
890 | }
891 | }else
892 | {
893 | // ignore this type of messages
894 | //purple_debug_warning(PLUGIN_ID, "empty message or empty 'to'\n");
895 | }
896 | }
897 | }
898 |
899 | /* ------------------
900 | * called on new conversations
901 | * ------------------ */
902 | void conversation_created_cb(PurpleConversation *conv, char* data)
903 | {
904 | char sys_msg_buffer[1000];
905 | if (purple_conversation_get_type(conv) != PURPLE_CONV_TYPE_IM)
906 | return;
907 |
908 | // check if the user with the jid=conv->name has signed his presence
909 | char* bare_jid = get_bare_jid(conv->name);
910 | purple_debug_info(PLUGIN_ID, "conversation name: %s bare jid: %s\n",conv->name,bare_jid);
911 |
912 | // get stored info about user
913 | struct list_item* item = g_hash_table_lookup(list_fingerprints,bare_jid);
914 |
915 | if (item != NULL)
916 | {
917 | char* userid = NULL;
918 | // check if we have key locally
919 | if (is_key_available(item->fpr,FALSE,FALSE,&userid) == FALSE)
920 | {
921 | // local key is missing
922 | sprintf(sys_msg_buffer,"User has key with Fingerprint %s, but we do not have it locally. Try Options -> \"Try to retrieve key of '%s' from server\"",item->fpr,bare_jid);
923 | }else
924 | {
925 | // key is already available locally -> enable mode_enc
926 | sprintf(sys_msg_buffer,"Encryption enabled with %s (%s)", userid, item->fpr);
927 | item->mode_sec = TRUE;
928 | }
929 | if (userid != NULL)
930 | free(userid);
931 | userid = NULL;
932 | }else
933 | sprintf(sys_msg_buffer,"Encryption disabled, the remote client doesn't support it.");
934 |
935 | // display message about received message
936 | purple_conversation_write(conv,"",sys_msg_buffer,PURPLE_MESSAGE_SYSTEM | PURPLE_MESSAGE_NO_LOG,time(NULL));
937 |
938 | free(bare_jid);
939 | }
940 |
941 | /* ------------------
942 | * called before display of received messages
943 | * ------------------ */
944 | static gboolean
945 | receiving_im_msg_cb(PurpleAccount *account, char **sender, char **buffer,
946 | PurpleConversation *conv, PurpleMessageFlags *flags, void *data)
947 | {
948 | char sys_msg_buffer[1000];
949 |
950 | // check if the user with the jid=conv->name has signed his presence
951 | char* bare_jid = get_bare_jid(*sender);
952 |
953 | // set default message
954 | sprintf(sys_msg_buffer,"Encryption disabled");
955 |
956 | // get encryption key
957 | struct list_item* item = g_hash_table_lookup(list_fingerprints,bare_jid);
958 | if (item != NULL)
959 | {
960 | if (item->mode_sec == TRUE)
961 | sprintf(sys_msg_buffer,"Encryption enabled");
962 |
963 | // display a basic message, only if mode changed
964 | if (item->mode_sec != item->mode_sec_old)
965 | purple_conversation_write(conv,"",sys_msg_buffer,PURPLE_MESSAGE_SYSTEM | PURPLE_MESSAGE_NO_LOG,time(NULL));
966 | item->mode_sec_old = item->mode_sec;
967 | }
968 | free(bare_jid);
969 |
970 | return FALSE;
971 | }
972 |
973 | /* ------------------
974 | * conversation menu action, that toggles mode_sec
975 | * ------------------ */
976 | static void
977 | menu_action_toggle_cb(PurpleConversation *conv, void* data)
978 | {
979 | // check if the user with the jid=conv->name has signed his presence
980 | char* bare_jid = get_bare_jid(conv->name);
981 |
982 | // get stored info about user
983 | struct list_item* item = g_hash_table_lookup(list_fingerprints,bare_jid);
984 | if (item != NULL)
985 | {
986 | item->mode_sec = !(item->mode_sec);
987 | item->mode_sec_old = item->mode_sec;
988 |
989 | // tell user, that we toggled mode
990 | purple_conversation_write(conv,"",item->mode_sec?"Encryption enabled":"Encryption disabled",PURPLE_MESSAGE_SYSTEM | PURPLE_MESSAGE_NO_LOG,time(NULL));
991 | }
992 | free(bare_jid);
993 | }
994 |
995 | /* ------------------
996 | * send public key to other person in conversation
997 | * ------------------ */
998 | static void
999 | menu_action_sendkey_cb(PurpleConversation *conv, void* data)
1000 | {
1001 | // check if user selected a main key
1002 | const char* fpr = purple_prefs_get_string(PREF_MY_KEY);
1003 | if (fpr == NULL)
1004 | fpr = "";
1005 | if (strcmp(fpr,"") != 0)
1006 | {
1007 | char* key = NULL;
1008 | // get key
1009 | key = get_key_armored(fpr);
1010 |
1011 | if (key != NULL)
1012 | {
1013 | // send key
1014 | PurpleConvIm* im_data = purple_conversation_get_im_data(conv);
1015 | if (im_data != NULL)
1016 | {
1017 | purple_conv_im_send_with_flags(im_data,key,PURPLE_MESSAGE_SYSTEM | PURPLE_MESSAGE_INVISIBLE | PURPLE_MESSAGE_RAW );
1018 | purple_conversation_write(conv,"","Public key sent!",PURPLE_MESSAGE_SYSTEM | PURPLE_MESSAGE_NO_LOG,time(NULL));
1019 | }
1020 | }
1021 | }else
1022 | {
1023 | purple_conversation_write(conv,"","You haven't selected a personal key yet.",PURPLE_MESSAGE_SYSTEM | PURPLE_MESSAGE_NO_LOG,time(NULL));
1024 | }
1025 | }
1026 |
1027 | /* ------------------
1028 | * try to retrieve key from server
1029 | * ------------------ */
1030 | static void
1031 | menu_action_retrievekey_cb(PurpleConversation *conv, void* data)
1032 | {
1033 | char sys_msg_buffer[1000];
1034 | // check if the user with the jid=conv->name has signed his presence
1035 | char* bare_jid = get_bare_jid(conv->name);
1036 |
1037 | // get stored info about user
1038 | struct list_item* item = g_hash_table_lookup(list_fingerprints,bare_jid);
1039 | if (item != NULL)
1040 | {
1041 | char* userid = NULL;
1042 | if (is_key_available(item->fpr,FALSE,TRUE,&userid) == FALSE)
1043 | {
1044 | sprintf(sys_msg_buffer,"Did not find key with ID '%s' on keyservers.",item->fpr);
1045 | purple_conversation_write(conv,"",sys_msg_buffer,PURPLE_MESSAGE_SYSTEM | PURPLE_MESSAGE_NO_LOG,time(NULL));
1046 | }else
1047 | {
1048 | // found key -> enable mode_enc
1049 | sprintf(sys_msg_buffer,"Found key with ID '%s'/'%s' for '%s' on keyservers.",item->fpr,userid,bare_jid);
1050 | purple_conversation_write(conv,"",sys_msg_buffer,PURPLE_MESSAGE_SYSTEM | PURPLE_MESSAGE_NO_LOG,time(NULL));
1051 | purple_conversation_write(conv,"","Encryption enabled",PURPLE_MESSAGE_SYSTEM | PURPLE_MESSAGE_NO_LOG,time(NULL));
1052 | item->mode_sec = TRUE;
1053 | }
1054 | if (userid != NULL)
1055 | free(userid);
1056 | }
1057 |
1058 | free(bare_jid);
1059 | }
1060 |
1061 | /* ------------------
1062 | * conversation extended menu
1063 | * ------------------ */
1064 | void
1065 | conversation_extended_menu_cb(PurpleConversation *conv, GList **list)
1066 | {
1067 | char buffer[1000];
1068 | PurpleMenuAction *action = NULL;
1069 |
1070 | // check if the user with the jid=conv->name has signed his presence
1071 | char* bare_jid = get_bare_jid(conv->name);
1072 | // get stored info about user
1073 | struct list_item* item = g_hash_table_lookup(list_fingerprints,bare_jid);
1074 | if (item != NULL)
1075 | {
1076 | // on display encryption menu item, if user sent signed presence
1077 | action = purple_menu_action_new("Toggle OPENPGP encryption", PURPLE_CALLBACK(menu_action_toggle_cb),NULL,NULL);
1078 | *list = g_list_append(*list, action);
1079 |
1080 | sprintf(buffer,"Send own public key to '%s'",bare_jid);
1081 | action = purple_menu_action_new(buffer, PURPLE_CALLBACK(menu_action_sendkey_cb),NULL,NULL);
1082 | *list = g_list_append(*list, action);
1083 |
1084 | sprintf(buffer,"Try to retrieve key of '%s' from server",bare_jid);
1085 | action = purple_menu_action_new(buffer, PURPLE_CALLBACK(menu_action_retrievekey_cb),NULL,NULL);
1086 | *list = g_list_append(*list, action);
1087 | }
1088 | free(bare_jid);
1089 | }
1090 |
1091 | /* ------------------
1092 | * called before message is sent
1093 | * ------------------ */
1094 | void sending_im_msg_cb(PurpleAccount *account, const char *receiver,
1095 | char **message)
1096 | {
1097 | PurpleConversation *gconv = NULL;
1098 |
1099 | // search for conversation
1100 | gconv = purple_find_conversation_with_account(PURPLE_CONV_TYPE_IM, receiver, account);
1101 | if(gconv)
1102 | {
1103 | // check if the user with the jid=conv->name has signed his presence
1104 | char* bare_jid = get_bare_jid(gconv->name);
1105 | // get stored info about user
1106 | struct list_item* item = g_hash_table_lookup(list_fingerprints,bare_jid);
1107 | if (item != NULL)
1108 | {
1109 | // if we are in private mode
1110 | if (item->mode_sec == TRUE)
1111 | {
1112 | // try to get key
1113 | if (is_key_available(item->fpr,FALSE,FALSE,NULL) == FALSE)
1114 | {
1115 | // we do not have key of receiver
1116 | // -> cancel message sending
1117 | free (*message);
1118 | *message = NULL;
1119 |
1120 | // tell user of this
1121 | purple_conversation_write(gconv,"","The key of the receiver is not available, please ask the receiver for the key before trying to encrypt messages.",PURPLE_MESSAGE_SYSTEM | PURPLE_MESSAGE_NO_LOG,time(NULL));
1122 | }
1123 | }
1124 | }
1125 | free(bare_jid);
1126 | }
1127 | }
1128 |
1129 | /* ------------------
1130 | * called on module load
1131 | * ------------------ */
1132 | static gboolean plugin_load(PurplePlugin *plugin)
1133 | {
1134 | // check if hashtable already created
1135 | if (list_fingerprints == NULL)
1136 | list_fingerprints = g_hash_table_new(g_str_hash,g_str_equal);
1137 |
1138 | // register presence receiver handler
1139 | void *jabber_handle = purple_plugins_find_with_id("prpl-jabber");
1140 | void *conv_handle = purple_conversations_get_handle();
1141 |
1142 | if (conv_handle != NULL)
1143 | {
1144 | purple_signal_connect(conv_handle, "conversation-created", plugin, PURPLE_CALLBACK(conversation_created_cb), NULL);
1145 | purple_signal_connect(conv_handle, "receiving-im-msg", plugin, PURPLE_CALLBACK(receiving_im_msg_cb), NULL);
1146 | purple_signal_connect(conv_handle, "conversation-extended-menu", plugin, PURPLE_CALLBACK(conversation_extended_menu_cb), NULL);
1147 | purple_signal_connect(conv_handle, "sending-im-msg", plugin, PURPLE_CALLBACK(sending_im_msg_cb), NULL);
1148 | }else
1149 | return FALSE;
1150 |
1151 | if (jabber_handle)
1152 | {
1153 | purple_signal_connect(jabber_handle, "jabber-receiving-message", plugin,PURPLE_CALLBACK(jabber_message_received), NULL);
1154 | purple_signal_connect(jabber_handle, "jabber-receiving-presence", plugin,PURPLE_CALLBACK(jabber_presence_received), NULL);
1155 | purple_signal_connect(jabber_handle, "jabber-sending-xmlnode", plugin, PURPLE_CALLBACK(jabber_send_signal_cb), NULL);
1156 | }else
1157 | return FALSE;
1158 |
1159 | /*
1160 | Initialize everything needed; get the passphrase for encrypting and decrypting messages.
1161 | Attach to all windows the chat windows.
1162 | */
1163 | /* attach_to_all_windows();
1164 | purple_signal_connect(pidgin_conversations_get_handle(), "conversation-displayed", plugin, PURPLE_CALLBACK(conv_created), NULL);
1165 | purple_signal_connect(purple_conversations_get_handle(), "conversation-extended-menu", plugin, PURPLE_CALLBACK(conv_menu_cb), NULL);*/
1166 |
1167 | // initialize gpgme lib on module load
1168 | init_gpgme();
1169 |
1170 |
1171 | return TRUE;
1172 | }
1173 |
1174 | /*static gboolean plugin_unload(PurplePlugin *plugin) {
1175 | detach_from_all_windows();
1176 | return TRUE;
1177 | }*/
1178 |
1179 | /* ------------------
1180 | * preferences dialog function
1181 | * ------------------ */
1182 | static PurplePluginPrefFrame *
1183 | get_plugin_pref_frame(PurplePlugin *plugin) {
1184 | PurplePluginPrefFrame *frame;
1185 | PurplePluginPref *ppref;
1186 | gpgme_error_t error;
1187 | gpgme_ctx_t ctx;
1188 | gpgme_key_t key;
1189 |
1190 | // create preferences frame
1191 | frame = purple_plugin_pref_frame_new();
1192 |
1193 | // connect to gpgme
1194 | gpgme_check_version (NULL);
1195 | error = gpgme_new(&ctx);
1196 | if (error)
1197 | {
1198 | purple_debug_error(PLUGIN_ID,"gpgme_new failed: %s %s\n",gpgme_strsource (error), gpgme_strerror (error));
1199 | return NULL;
1200 | }
1201 |
1202 | // create key chooser preference
1203 | ppref = purple_plugin_pref_new_with_name_and_label(PREF_MY_KEY,"My key");
1204 | purple_plugin_pref_set_type(ppref, PURPLE_PLUGIN_PREF_CHOICE);
1205 | purple_plugin_pref_add_choice(ppref, "None", "");
1206 |
1207 | // list keys (secret keys)
1208 | error = gpgme_op_keylist_start (ctx,NULL,1);
1209 | if (error == GPG_ERR_NO_ERROR)
1210 | {
1211 | while (!error)
1212 | {
1213 | error = gpgme_op_keylist_next (ctx, &key);
1214 | if (error) break;
1215 | // add key to preference chooser
1216 | //TODO: find something better for g_strdup, or some possibility to free memory after preferences dialog closed
1217 | purple_plugin_pref_add_choice(ppref, g_strdup(key->uids->uid), g_strdup(key->subkeys->fpr));
1218 | purple_debug_info(PLUGIN_ID,"Found secret key for: %s has fpr %s\n",key->uids->uid,key->subkeys->fpr);
1219 | gpgme_key_release (key);
1220 | }
1221 | }else
1222 | {
1223 | purple_debug_error(PLUGIN_ID,"gpgme_op_keylist_start failed: %s %s\n",gpgme_strsource (error), gpgme_strerror (error));
1224 | }
1225 | // close gpgme connection
1226 | gpgme_release (ctx);
1227 |
1228 | purple_plugin_pref_frame_add(frame, ppref);
1229 |
1230 | return frame;
1231 | }
1232 |
1233 | /* ------------------
1234 | * The plugin ui info struct for preferences dialog
1235 | * ------------------ */
1236 | static PurplePluginUiInfo prefs_info = {
1237 | get_plugin_pref_frame,
1238 | 0, /* page_num (Reserved) */
1239 | NULL, /* frame (Reserved) */
1240 | /* Padding */
1241 | NULL,
1242 | NULL,
1243 | NULL,
1244 | NULL
1245 | };
1246 |
1247 | /* ------------------
1248 | * The plugin info struct
1249 | * ------------------ */
1250 | static PurplePluginInfo info = {
1251 | PURPLE_PLUGIN_MAGIC,
1252 | PURPLE_MAJOR_VERSION,
1253 | PURPLE_MINOR_VERSION,
1254 | PURPLE_PLUGIN_STANDARD,
1255 | NULL,
1256 | 0,
1257 | NULL,
1258 | PURPLE_PRIORITY_DEFAULT,
1259 |
1260 | PLUGIN_ID,
1261 | "GPG/OPENPGP (XEP-0027)",
1262 | "0.9",
1263 |
1264 | "GPG Plugin for Pidgin",
1265 | "Simple GPG Plugin for Pidgin.",
1266 | "Alexander Murauer ",
1267 | "https://github.com/segler-alex/Pidgin-GPG",
1268 |
1269 | plugin_load,
1270 | NULL,
1271 | NULL,
1272 |
1273 | NULL,
1274 | NULL,
1275 | &prefs_info,
1276 | NULL,
1277 | NULL,
1278 | NULL,
1279 | NULL,
1280 | NULL
1281 | };
1282 |
1283 | /* ------------------
1284 | * plugin init
1285 | * ------------------ */
1286 | static void init_plugin(PurplePlugin *plugin)
1287 | {
1288 | // create entries in prefs if they are not there
1289 | purple_prefs_add_none(PREF_ROOT);
1290 | purple_prefs_add_string(PREF_MY_KEY, "");
1291 | }
1292 |
1293 | PURPLE_INIT_PLUGIN(pidgin-gpg, init_plugin, info)
1294 |
--------------------------------------------------------------------------------
/win32.sh:
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1 | ./configure --host i586-mingw32msvc
2 | make clean
3 | DIR=`pwd`
4 | make LDFLAGS="-no-undefined -L$DIR/win32libs"
5 |
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/win32libs/libglib-2.0.dll:
--------------------------------------------------------------------------------
https://raw.githubusercontent.com/segler-alex/Pidgin-GPG/026bc8a4bd43fc79f4ec6af6a9d9025d579aa87b/win32libs/libglib-2.0.dll
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/win32libs/libgpg-error.dll:
--------------------------------------------------------------------------------
https://raw.githubusercontent.com/segler-alex/Pidgin-GPG/026bc8a4bd43fc79f4ec6af6a9d9025d579aa87b/win32libs/libgpg-error.dll
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/win32libs/libgpgme.dll:
--------------------------------------------------------------------------------
https://raw.githubusercontent.com/segler-alex/Pidgin-GPG/026bc8a4bd43fc79f4ec6af6a9d9025d579aa87b/win32libs/libgpgme.dll
--------------------------------------------------------------------------------
/win32libs/libpurple.dll:
--------------------------------------------------------------------------------
https://raw.githubusercontent.com/segler-alex/Pidgin-GPG/026bc8a4bd43fc79f4ec6af6a9d9025d579aa87b/win32libs/libpurple.dll
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