[krbdev.mit.edu #7929] git commit

[Greg Hudson via RT]

Move KKDCP OpenSSL code to an internal plugin

Create an internal pluggable interface "tls" with one in-tree dynamic
plugin module named "k5tls".  Move all of the OpenSSL calls to the
plugin module, and make the libkrb5 code load and invoke the plugin.
This way we do not load or initialize libssl unless an HTTP proxy is
used.

https://github.com/krb5/krb5/commit/472349d2a47fbc7db82e46ba46411b95c312fc1f
Author: Greg Hudson <ghudson at mit.edu>
Commit: 472349d2a47fbc7db82e46ba46411b95c312fc1f
Branch: master
 src/Makefile.in                     |    3 +-
 src/config/pre.in                   |    1 +
 src/configure.in                    |    6 +
 src/include/k5-int.h                |    7 +-
 src/include/k5-tls.h                |  104 +++++++
 src/include/k5-trace.h              |   33 +-
 src/lib/krb5/Makefile.in            |    3 +-
 src/lib/krb5/krb/copy_ctx.c         |    1 +
 src/lib/krb5/krb/init_ctx.c         |    1 +
 src/lib/krb5/krb/plugin.c           |    3 +-
 src/lib/krb5/krb5_libinit.c         |    2 -
 src/lib/krb5/os/Makefile.in         |    3 +-
 src/lib/krb5/os/checkhost.c         |  244 ---------------
 src/lib/krb5/os/checkhost.h         |   39 ---
 src/lib/krb5/os/deps                |   13 +-
 src/lib/krb5/os/locate_kdc.c        |    8 -
 src/lib/krb5/os/os-proto.h          |    1 -
 src/lib/krb5/os/sendto_kdc.c        |  425 ++++++---------------------
 src/plugins/tls/k5tls/Makefile.in   |   22 ++
 src/plugins/tls/k5tls/deps          |   25 ++
 src/plugins/tls/k5tls/k5tls.exports |    1 +
 src/plugins/tls/k5tls/notls.c       |   53 ++++
 src/plugins/tls/k5tls/openssl.c     |  570 +++++++++++++++++++++++++++++++++++
 23 files changed, 899 insertions(+), 669 deletions(-)