In accordance with Section 3.2.2.1 of XML Schema Part 2: Datatypes, the
allowable lexical representations for the xs:boolean datatype are the
strings "0" and "false" for the concept 'false' and the strings "1" and
"true" for the concept 'true'; implementations MUST support both styles
of lexical representation.
create_unique_id() was changed to use UUIDs instead of a counter in the
last commit. Since now it depends on connection_create_uuid() which is
in the xmpp subfolder the function should also be moved there.
Renamed it to connection_create_stanza_id() and moved it to
src/xmpp/connection.c.
Discussion happened in https://github.com/boothj5/profanity/pull/1010
Message IDs should be unique so they can be used by XEPs like delivery receipts, chat markers, message correction.
So far it used a counter so restarting profanity will cause the counter
to be 0 again.
Let's rather use an UUID since we have such a function in the
xmpp/xmpp.h already.
Closes https://github.com/boothj5/profanity/issues/998
With gcc8 we get the following error when stringop-truncation is on:
```
In function ‘_rotate_log_file’,
inlined from ‘log_msg.part.2’ at src/log.c:201:17:
src/log.c:231:5: error: ‘strncpy’ output truncated before terminating nul copying as many bytes from a string as its length [-Werror=stringop-truncation]
strncpy(log_file_new, log_file, len);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
src/log.c: In function ‘log_msg.part.2’:
src/log.c:228:18: note: length computed here
size_t len = strlen(log_file);
^~~~~~~~~~~~~~~~
```
Using memcpy instead of strncpy.
