Treating that as a safe encoding is OK because even when other systems return
that string for real ISO8859-1, it is still safe in the sense that it is
ASCII-compatible and stateless.
Issue reported by Val dot Baranov at duke dot edu. Additional
information provided by Michael dot Felt at felt dot demon dot nl.
Tested by Michael Felt on AIX 6.1 and by Val Baranov on AIX 7.1.
Tweak and OK djm@.
OpenBSD-Commit-ID: 36f1210e0b229817d10eb490d6038f507b8256a7
Switch to recallocarray() for a few operations. Both
growth and shrinkage are handled safely, and there also is no need for
preallocation dances. Future changes in this area will be less error prone.
Review and one bug found by markus
Upstream-ID: 822d664d6a5a1d10eccb23acdd53578a679d5065
Recognize nl_langinfo(CODESET) return values "646" and ""
as aliases for "US-ASCII", useful for different versions of NetBSD and
Solaris. Found by dtucker@ and by Tom G. Christensen <tgc at jupiterrise dot
com>. OK dtucker@ deraadt@
Upstream-ID: 38c2133817cbcae75c88c63599ac54228f0fa384
Add a common nl_langinfo(CODESET) alias for US-ASCII
"ANSI_X3.4-1968" that is used by Linux. Fixes mprintf output truncation for
non-UTF-8 locales on Linux spotted by dtucker@; ok deraadt@ schwarze@
Upstream-ID: c6808956ebffd64066f9075d839f74ff0dd60719
In vasnmprintf() return an error if malloc fails and
don't set a function argument to the address of free'd memory.
ok djm@
Upstream-ID: 1efffffff2f51d53c9141f245b90ac23d33b9779
Turkish locales are unique in their handling of the letters 'i' and
'I' (yes, they are different letters) and OpenSSH isn't remotely
prepared to deal with that. For now, the best we can do is to force
OpenSSH to use the C/POSIX locale and try to preserve the UTF-8
encoding if possible.
ok dtucker@
Even when only writing an unescaped character, the dst
buffer may need to grow, or it would be overrun; issue found by tb@ with
malloc.conf(5) 'C'.
While here, reserve an additional byte for the terminating NUL
up front such that we don't have to realloc() later just for that.
OK tb@
Upstream-ID: 30ebcc0c097c4571b16f0a78b44969f170db0cff
Fix two rare edge cases: 1. If vasprintf() returns < 0,
do not access a NULL pointer in snmprintf(), and do not free() the pointer
returned from vasprintf() because on some systems other than OpenBSD, it
might be a bogus pointer. 2. If vasprintf() returns == 0, return 0 and ""
rather than -1 and NULL.
Besides, free(dst) is pointless after failure (not a bug).
One half OK martijn@, the other half OK deraadt@;
committing quickly before people get hurt.
Upstream-ID: b7bcd2e82fc168a8eff94e41f5db336ed986fed0
To prevent screwing up terminal settings when printing to
the terminal, for ASCII and UTF-8, escape bytes not forming characters and
bytes forming non-printable characters with vis(3) VIS_OCTAL. For other
character sets, abort printing of the current string in these cases. In
particular, * let scp(1) respect the local user's LC_CTYPE locale(1); *
sanitize data received from the remote host; * sanitize filenames, usernames,
and similar data even locally; * take character display widths into account
for the progressmeter.
This is believed to be sufficient to keep the local terminal safe
on OpenBSD, but bad things can still happen on other systems with
state-dependent locales because many places in the code print
unencoded ASCII characters into the output stream.
Using feedback from djm@ and martijn@,
various aspects discussed with many others.
deraadt@ says it should go in now, i probably already hesitated too long
Upstream-ID: e66afbc94ee396ddcaffd433b9a3b80f387647e0
