remove the legacy one.
Includes a fairly big refactor of auth2-pubkey.c to retain less state
between key file lines.
feedback and ok markus@
OpenBSD-Commit-ID: dece6cae0f47751b9892080eb13d6625599573df
bz#2249: handle the case where PAM returns PAM_MAXTRIES by ceasing to offer
password and keyboard-interative authentication methods. Should prevent
"sshd ignoring max retries" warnings in the log. ok djm@
It probably won't trigger with keyboard-interactive in the default
configuration because the retry counter is stored in module-private
storage which goes away with the sshd PAM process (see bz#688). On the
other hand, those cases probably won't log a warning either.
When sshd decides to not allow a login (eg PermitRootLogin=no) and
it's using PAM, it sends a fake password to PAM so that the timing for
the failure is not noticeably different whether or not the password
is correct. This behaviour can be detected by sending a very long
password string which is slower to hash than the fake password.
Mitigate by constructing an invalid password that is the same length
as the one from the client and thus takes the same time to hash.
Diff from djm@
[canohost.c channels.c cipher-acss.c defines.h dns.c gss-genr.c]
[gss-serv-krb5.c gss-serv.c log.h loginrec.c logintest.c readconf.c]
[servconf.c ssh-keygen.c ssh-keyscan.c ssh-keysign.c ssh-rand-helper.c]
[ssh.c sshconnect.c sshd.c openbsd-compat/bindresvport.c]
[openbsd-compat/bsd-arc4random.c openbsd-compat/bsd-misc.c]
[openbsd-compat/getrrsetbyname.c openbsd-compat/glob.c]
[openbsd-compat/mktemp.c openbsd-compat/port-linux.c]
[openbsd-compat/port-tun.c openbsd-compat/readpassphrase.c]
[openbsd-compat/setproctitle.c openbsd-compat/xmmap.c]
make the portable tree compile again - sprinkle unistd.h and string.h
back in. Don't redefine __unused, as it turned out to be used in
headers on Linux, and replace its use in auth-pam.c with ARGSUSED
session.c ssh-rand-helper.c sshd.c openbsd-compat/bsd-cygwin_util.c
openbsd-compat/setproctitle.c] Convert malloc(foo*bar) -> calloc(foo,bar)
in Portable-only code; since calloc zeros, remove now-redundant memsets.
Also add a couple of sanity checks. With & ok djm@
[buffer.c channels.c deattack.c misc.c scp.c session.c sftp-client.c]
[sftp-server.c ssh-agent.c ssh-rsa.c xmalloc.c xmalloc.h auth-pam.c]
[uidswap.c]
change OpenSSH's xrealloc() function from being xrealloc(p, new_size)
to xrealloc(p, new_nmemb, new_itemsize).
realloc is particularly prone to integer overflows because it is
almost always allocating "n * size" bytes, so this is a far safer
API; ok deraadt@
warning: dereferencing type-punned pointer will break strict-aliasing rules
warning: passing arg 3 of `pam_get_item' from incompatible pointer type
The type-punned pointer fix is based on a patch from SuSE's rpm. ok djm@
that USE_POSIX_THREADS is unsupported, not recommended and generally a bad
idea, it is now known as UNSUPPORTED_POSIX_THREADS_HACK. Attempting to use
USE_POSIX_THREADS will now generate an error so we don't silently change
behaviour. ok djm@
[cipher-ctr.c cipher.c]
remove fallback AES support for old OpenSSL, as OpenBSD has had it for
many years now; ok deraadt@
(Id sync only: Portable will continue to support older OpenSSLs)
Bug #892: Send messages from failing PAM account modules to the client via
SSH2_MSG_USERAUTH_BANNER messages. Note that this will not happen with
SSH2 kbdint authentication, which need to be dealt with separately. ok djm@
