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3928bbf8b3
Add support for SHA-2 crypt() algorithm in htpasswd.
* configure.in: Detect SHA-2 support in crypt().
* support/passwd_common.h: Define ALG_CRYPT_SHA256, ALG_CRYPT_SHA512,
include ap_config_auto.h.
* support/htpasswd.c (check_args): Allow -2, -5, -r arguments for
SHA-256, SHA-256 and rounds options respectively.
* support/passwd_common.c
(parse_common_options): Parse -2, -5, -r args.
(mkhash): Generate crypt hash for SHA256/SHA512 algorithms.
Update transform.
* support/htpasswd.c (usage): More usage fixes for SHA-2; describe
as "secure", leave bcrypt only algorithm described as "very secure".
* support/passwd_common.c (mkhash): Fix salt buffer size for SHA2
(caught by gcc 10).
configure: Assume crypt() does not support SHA-2 when cross-compiling.
Can be forced with "./configure ap_cv_crypt_sha2=yes ..." still.
* configure.in:
Give AC_RUN_IFELSE a cross-compiling action, otherwise it fails with:
configure: error: cannot run test program while cross compiling
Submitted by: jorton, ylavic
Reviewed by: minfrin, ylavic, jorton
git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1915516 13f79535-47bb-0310-9956-ffa450edef68