Fix:
```
==18682== 408 bytes in 17 blocks are definitely lost in loss record
3,279 of 3,632
==18682== at 0x483677F: malloc (in /usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so)
==18682== by 0x42F602: roster_update_presence (roster_list.c:129)
==18682== by 0x448AA3: sv_ev_contact_online (server_events.c:906)
==18682== by 0x43D2BA: _available_handler (presence.c:674)
==18682== by 0x43C81B: _presence_handler (presence.c:398)
==18682== by 0x5AF118E: handler_fire_stanza (handler.c:124)
==18682== by 0x5AEDBDA: _handle_stream_stanza (conn.c:1253)
==18682== by 0x5AFA43E: _end_element (parser_expat.c:190)
==18682== by 0x6818AA4: doContent (xmlparse.c:2977)
==18682== by 0x681A3AB: contentProcessor (xmlparse.c:2552)
==18682== by 0x681D7EB: XML_ParseBuffer (xmlparse.c:1988)
==18682== by 0x681D7EB: XML_ParseBuffer (xmlparse.c:1957)
==18682== by 0x5AF0A63: xmpp_run_once (event.c:255)
==18682== by 0x432E5D: connection_check_events (connection.c:104)
==18682== by 0x4323B3: session_process_events (session.c:255)
==18682== by 0x42C097: prof_run (profanity.c:128)
==18682== by 0x4B25B9: main (main.c:172)
```
omemo_key_free() was called to free the key.
It free the key->data too. But in same cases this was not set yet. So
we need to set the data to NULL (or use calloc) at initialization so
that omemo_key_free() only frees it if it was actually allocated.
Regards https://github.com/profanity-im/profanity/issues/1148
so far only the key part was freed. We also need to free the actual
handler.
Fix:
```
==21171== 1,128 bytes in 47 blocks are definitely lost in loss record
3,476 of 3,670
==21171== at 0x483677F: malloc (in
/usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so)
==21171== by 0x434248: iq_id_handler_add (iq.c:265)
==21171== by 0x4B122E: omemo_devicelist_request (omemo.c:46)
==21171== by 0x4AC411: omemo_start_session (omemo.c:409)
==21171== by 0x4AC37C: omemo_start_sessions (omemo.c:396)
==21171== by 0x447881: sv_ev_roster_received (server_events.c:189)
==21171== by 0x444019: roster_result_handler (roster.c:312)
==21171== by 0x433FC2: _iq_handler (iq.c:202)
==21171== by 0x5AF118E: ??? (in /usr/lib64/libmesode.so.0.0.0)
==21171== by 0x5AEDBDA: ??? (in /usr/lib64/libmesode.so.0.0.0)
==21171== by 0x5AFA43E: ??? (in /usr/lib64/libmesode.so.0.0.0)
==21171== by 0x6818AA4: ??? (in /usr/lib64/libexpat.so.1.6.8)
==21171== by 0x681A3AB: ??? (in /usr/lib64/libexpat.so.1.6.8)
==21171== by 0x681D7EB: XML_ParseBuffer (in
/usr/lib64/libexpat.so.1.6.8)
==21171== by 0x5AF0A63: xmpp_run_once (in
/usr/lib64/libmesode.so.0.0.0)
==21171== by 0x432E5D: connection_check_events (connection.c:104)
==21171== by 0x4323B3: session_process_events (session.c:255)
==21171== by 0x42C097: prof_run (profanity.c:128)
==21171== by 0x4B2627: main (main.c:172)
```
Fix:
```
==20561== 32 bytes in 1 blocks are definitely lost in loss record 1,467
of 3,678
==20561== at 0x483677F: malloc (in
/usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so)
==20561== by 0x4B16C9: omemo_start_device_session_handle_bundle
(omemo.c:167)
==20561== by 0x43405E: _iq_handler (iq.c:214)
==20561== by 0x5AF118E: ??? (in /usr/lib64/libmesode.so.0.0.0)
==20561== by 0x5AEDBDA: ??? (in /usr/lib64/libmesode.so.0.0.0)
==20561== by 0x5AFA43E: ??? (in /usr/lib64/libmesode.so.0.0.0)
==20561== by 0x6818AA4: ??? (in /usr/lib64/libexpat.so.1.6.8)
==20561== by 0x681A3AB: ??? (in /usr/lib64/libexpat.so.1.6.8)
==20561== by 0x681D7EB: XML_ParseBuffer (in
/usr/lib64/libexpat.so.1.6.8)
==20561== by 0x5AF0A63: xmpp_run_once (in
/usr/lib64/libmesode.so.0.0.0)
==20561== by 0x432E5D: connection_check_events (connection.c:104)
==20561== by 0x4323B3: session_process_events (session.c:255)
==20561== by 0x42C097: prof_run (profanity.c:128)
==20561== by 0x4B260D: main (main.c:172)
```
In some conditions we just returned without freeing allocated variables.
Should fix following valgrind reported leak:
```
==17941== 19 bytes in 1 blocks are definitely lost in loss record 613 of
3,674
==17941== at 0x483677F: malloc (in
/usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so)
==17941== by 0x5BB0DAA: strdup (strdup.c:42)
==17941== by 0x4B1592: omemo_start_device_session_handle_bundle
(omemo.c:126)
==17941== by 0x43405E: _iq_handler (iq.c:214)
==17941== by 0x5AF118E: ??? (in /usr/lib64/libmesode.so.0.0.0)
==17941== by 0x5AEDBDA: ??? (in /usr/lib64/libmesode.so.0.0.0)
==17941== by 0x5AFA43E: ??? (in /usr/lib64/libmesode.so.0.0.0)
==17941== by 0x6818AA4: ??? (in /usr/lib64/libexpat.so.1.6.8)
==17941== by 0x681A3AB: ??? (in /usr/lib64/libexpat.so.1.6.8)
==17941== by 0x681D7EB: XML_ParseBuffer (in
/usr/lib64/libexpat.so.1.6.8)
==17941== by 0x5AF0A63: xmpp_run_once (in
/usr/lib64/libmesode.so.0.0.0)
==17941== by 0x432E5D: connection_check_events (connection.c:104)
==17941== by 0x4323B3: session_process_events (session.c:255)
==17941== by 0x42C097: prof_run (profanity.c:128)
==17941== by 0x4B2610: main (main.c:172)
```
We call omemo_init() when starting profanity and should have an
omemo_close() at exit.
For now we free the fingerprint autocompleter in there.
Fixes valgrind:
```
==13226== 24 bytes in 1 blocks are definitely lost in loss record 2,855
of 6,958
==13226== at 0x483677F: malloc (in
/usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so)
==13226== by 0x48AD39: autocomplete_new (autocomplete.c:57)
==13226== by 0x4AB89F: omemo_init (omemo.c:127)
==13226== by 0x42C283: _init (profanity.c:206)
==13226== by 0x42BFF3: prof_run (profanity.c:98)
==13226== by 0x4B25E6: main (main.c:172)
```
Regards https://github.com/profanity-im/profanity/issues/1131
Probably missing copy of body to plain in carbon and privmessage.
Only covers the incoming message path because goal is OMEMO decryption
of untrusted message.
Cover some of the log functions but not all.
