ima-evm-utils: Add some tests for evmctl

Run `make check' to execute the tests.
Currently only ima_hash, (evm) sign, (evm) verify, ima_sign, and ima_verify are tested.

---
Changelog since v5:
- Fix tests if gost-engine is not present. Thx to Mimi Zohar for testing on Xenial.

Changelog since v4:
- Fix bugs found by Mimi Zohar:
- Fix typos in variable names
- Fix `-out -' in asn1parse for openssl 1.0.x

Changelog since v3:
- Apply changes based on some suggestions from Petr Vorel, such as
- Add .gitignore
- Do not color output if stdout is not tty.
- Fix blkid error with --uuid option.
- Remove or change some comments
- Replace ENGINE with EVMCTL_ENGINE and OPENSSL_ENGINE.
- All tests pass over next branch.

Changelog since v2:
- ima_sign.test and ima_verify.test merged into sign_verify.test which is also able to test evm signatures.
- Apply Mimi Zohar suggestions regarding commenting, variable renaming, code rearranging, etc. with intent to simplify the code and review.

Changelog since v1:
- Apply suggestions by Petr Vorel:
- Rename function names and variables to be more understandable.
- Rename tests/functions to tests/functions.sh.
- Define exit codes (77, 99, ...) as variables.
- Added more comments and remove single letter variables (for Mimi Zohar).
- Move getfattr check into function.
- Move evmctl run and check into single function.
- Add sign/verify tests for v1 signatures.
- Minor improvements.
- Since I still edit all 5 files I did not split the patch into multiple commits to separate the files, otherwise editing will become too complicated, as I ought to continuously rebase and edit different commits. This was really non-productive suggestion.

 .gitignore             |   2 +-
 Makefile.am            |   2 +-
 configure.ac           |   1 +
 tests/.gitignore       |  16 +++
 tests/Makefile.am      |  12 ++
 tests/functions.sh     | 272 +++++++++++++++++++++++++++++++++++++
 tests/gen-keys.sh      |  93 +++++++++++++
 tests/ima_hash.test    |  71 ++++++++++
 tests/sign_verify.test | 359 +++++++++++++++++++++++++++++++++++++++++++++++++
 9 files changed, 826 insertions(+), 2 deletions(-)
 create mode 100644 tests/.gitignore
 create mode 100644 tests/Makefile.am
 create mode 100755 tests/functions.sh
 create mode 100755 tests/gen-keys.sh
 create mode 100755 tests/ima_hash.test
 create mode 100755 tests/sign_verify.test

index cb82166..c579199 100644
@@ -21,7 +21,7 @@ missing
 compile
 libtool
 ltmain.sh
-
+test-driver
 
 # Compiled executables
 *.o

index dba408d..45c6f82 100644
@@ -1,4 +1,4 @@
-SUBDIRS = src
+SUBDIRS = src tests
 dist_man_MANS = evmctl.1
 
 doc_DATA =  examples/ima-genkey-self.sh examples/ima-genkey.sh examples/ima-gen-local-ca.sh

index 5aca4c1..3f21ba4 100644
@@ -67,6 +67,7 @@ EVMCTL_MANPAGE_DOCBOOK_XSL
 
 AC_CONFIG_FILES([Makefile
 		src/Makefile
+		tests/Makefile
 		packaging/ima-evm-utils.spec
 		])
 AC_OUTPUT

new file mode 100644
index 0000000..9ecc984
@@ -0,0 +1,16 @@
+# Generated by test driver
+*.log
+*.trs
+
+# Generated by tests
+*.txt
+*.out
+*.sig
+*.sig2
+
+# Generated certs and keys (by gen-keys.sh)
+*.cer
+*.pub
+*.key
+*.conf
+

new file mode 100644
index 0000000..029f2ff
@@ -0,0 +1,12 @@
+check_SCRIPTS =
+TESTS = $(check_SCRIPTS)
+
+check_SCRIPTS += ima_hash.test sign_verify.test
+
+clean-local:
+	-rm -f *.txt *.out *.sig *.sig2
+
+distclean: distclean-keys
+.PHONY: distclean-keys
+distclean-keys:
+	./gen-keys.sh clean

2.11.0

Thanks, no errors now.

Mimi