Why upgrade? I'm not a lawyer, but here's my take on the differences
to version 2:
* Software patents: better protection against abuse of patents to
prevent users from exercising the rights under the GPL. I doubt
we'll get hit with a patent suit, but it's a good move just on
general principles.
* License compatibility: compatible with more free licenses, i.e. can
"steal" more free software for use in Empire. I don't expect to steal
much, but it's nice to have the option.
* Definition of "source code": modernization of some details for today's
networked world, to make it easier to distribute the software. Not
really relevant to us now, as we normally distribute full source code.
* Tivoization: this is about putting GPL-licensed software in hardware,
then make the hardware refuse to run modified software. "Neat" trick
to effectively deny its users their rights under the GPL. Abuse was
"pioneered" by TiVo (popular digital video recorders). GPLv3 forbids
it. Unlikely to become a problem for us.
* Internationalization: more careful wording, to harden the license
outside the US. The lawyers tell us it better be done that way.
* License violations: friendlier way to deal with license violations.
This has come out of past experience enforcing the GPL.
* Additional permissions: Probably not relevant to us.
Also include myself in the list of principal authors.
New tel_read_header(), tel_read_body(). Use them in rea(),
show_first_tel(), copy_and_expire().
rea() now stops when it encounters a corrupt telegram, and logs the
problem. Before, error detection was incomplete, and errors were not
logged. Corrupt mailboxes could make it crash.
show_first_tel() and copy_and_expire() can now cope with telegrams of
arbitrary length, like rea(), and sanity-check the header fields they
don't actually use.
Remove the extern posix_fileno().
(fileno) [_WIN32]: Replace system fileno() with a function that supports posix
file descriptors. Move #undef fileno to w32misc.h as the system define
is in stdio.h.
(rea) [_WIN32]: Add stdio.h for fileno() extern declaration and add misc.h
to ensure the WIN32 fixes to stdio.h are included.
other. Ensure headers in include/ can be included in any order
(except for econfig-spec.h, which is special). New header types.h to
help avoid inclusion cycles. Sort include directives. Remove some
superflous includes.
(NF_UTF8, togg): New client flag.
(flash, wall): User text input filtering.
(parse, prmptrd): Normal text input filtering.
(uprmptrd, ugetstring): New, to get user text.
(getele, flash, wall): Use them.
(getele): No need to filter out funny characters; input filtering
takes care of them.
(sendmessage, ufindbreak): Work on user text.
(uprnf): New, to print user text.
(rea, gamedown, show_motd): Use it.
(prnf): Unused, remove.
(pr, upr_player): Normal text output filtering (with highlighting).
(pr_flash): User text output filtering.
upda,ef_open,logerror,emp_config,match_user,show_motd,gamedown,
typed_wu,delete_old_announcements,mobility_check,mobility_init,
allocate_memory,write_newcap_script,main,files,fairland,doconfig,)
[_WIN32]: Switchback to default mode of text.
"t" (text) is not included the ISO/ANSI C standard but "b" (binary)
is included.
emp_config,gamedown,show_motd,match_user,typed_wu,
delete_old_announcements) [_WIN32]: switch the default file mode to
binary to match POSIX. Remove the now unneccessary ifdef for
the open/fopen. Add text mode for user files (econfig/auth).
between headers. Code is now fully prototyped and compiles cleanly
with gcc -Wstrict-prototypes -Wmissing-prototypes -Wnested-externs
-Wredundant-decls. Closes#723788.
tennames, numstr): Replace by static local variables in their only
user.
(relates): Move from global/misc.c to common/nat.c.
(att_mode): Move from global/misc.c to subs/attsub.c.
effect. Replace calls by struct assignment where possible. Replace
clear buffer, copy string to buffer by strncpy(). Use assignment to
clear when that's clearer. Replace overlapping copy through bounce
buffer by memmove(). Replace rest by standard memset() and memcpy().
Also use sizeof() instead of literal array sizes for robustness, and
instead of symbolic array sizes for clarity.
