#
# CDDL HEADER START
#
# The contents of this file are subject to the terms of the
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#
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# or http://www.opensolaris.org/os/licensing.
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# If applicable, add the following below this CDDL HEADER, with the
# fields enclosed by brackets "[]" replaced with your own identifying
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#
# Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
#

#
# sun_solaris_getconf.sh - test the ksh93 getconf builtin for compatibility
# with /usr/bin/getconf
#

# test setup
function err_exit
{
	print -u2 -n "\t"
	print -u2 -r ${Command}[$1]: "${@:2}"
	(( Errors < 127 && Errors++ ))
}
alias err_exit='err_exit $LINENO'

set -o nounset
Command=${0##*/}
integer Errors=0


# setup
integer mismatch     # counts mismatches between builtin and external command
integer getconf_keys # counts tests (paranoid check to make sure the test loop works)
export PATH=/usr/bin:/bin

# prechecks
[[ ! -f "/bin/getconf" ]] && err_exit '/bin/getconf not found.'
[[ ! -x "/bin/getconf" ]] && err_exit '/bin/getconf not executable.'

# Define test functions and store them in a string for repeated usagae
# (we can't use "functions" (alias "typeset -f") since this does not
# work in compiled shell scripts)
typeset -r getconf_test_functions="$(
cat <<EOF
function err_exit
{
	print -u2 -n "\t"
	print -u2 -r \${Command}[\$1]: "\${@:2}"
	(( Errors++ ))
}
alias err_exit='err_exit \$LINENO'
Command=\${0##*/}
integer Errors=0
# compare builtin getconf output with /usr/bin/getconf
function compare_normal
{
    mismach=0 getconf_keys=0
    /usr/bin/getconf -a |
        while read i ; do
            (( getconf_keys++ ))
            t="\${i%:*}"

            a="\$(getconf          "\$t" 2>/dev/null)"
            b="\$(/usr/bin/getconf "\$t" 2>/dev/null)"

            if [[ "\$a" != "\$b" ]] ; then
                print -u2 "getconf/normal built mismatch: |\$t|:|\$a| != |\$b|"
                (( mismatch++ ))
            fi
        done
}

# compare builtin getconf output with /usr/bin/getconf while passing a path argument
function compare_path
{
    mismach=0 getconf_keys=0
    /usr/bin/getconf -a |
        while read i ; do
            (( getconf_keys++ ))
            t="\${i%:*}"

            a="\$(getconf          "\$t" "/tmp" 2>/dev/null)"
            b="\$(/usr/bin/getconf "\$t" "/tmp" 2>/dev/null)"

            if [[ "\$a" != "\$b" ]] ; then
                print -u2 "getconf/path built mismatch: |\$t|:|\$a| != |\$b|"
                (( mismatch++ ))
            fi
        done
}
EOF
)"

print -r -- "$getconf_test_functions" | source /dev/stdin

# future versions of this test should test the following ${PATH}s, too:
# "/usr/xpg6/bin:/usr/xpg4/bin:/bin:/usr/bin" \
#"/usr/xpg4/bin:/bin:/usr/bin" \
for i in \
    "/usr/bin:/bin" \
    "/bin:/usr/bin"
do
    export PATH="${i}"

    ## test whether the getconf builtin is available
    if [[ "$(builtin | fgrep "/bin/getconf")" == "" ]] ; then
        err_exit '/bin/getconf not found in the list of builtins.'
    fi


    ## compare "getconf -a" output
    if [[ "$(getconf -a)" != "$(/usr/bin/getconf -a)" ]] ; then
        err_exit 'getconf -a output mismatch.'
    fi


    ## check for a key which is only supported by the AST builtin version of getconf:
    if [[ "$(getconf LIBPREFIX)" != "lib" ]] ; then
        err_exit 'getconf LIBPREFIX did not return "lib".'
    fi


    ## run normal test
    compare_normal
    (( getconf_keys == 0 )) && err_exit "getconf/normal not working (PATH=${PATH})."
    (( mismatch     >  0 )) && err_exit "getconf/normal test found ${mismatch} differences (PATH=${PATH})."

    # run the same test in a seperate shell
    # (we explicitly test this because ast-ksh.2007-01-11 picks up /usr/xpg6/bin/getconf
    # if /usr/xpg6/bin/ comes in ${PATH} before /usr/bin (this happens only of ${PATH}
    # contains /usr/xpg6/bin before ksh93 is started)).
    ${SHELL} -c "integer mismatch ; \
        integer getconf_keys ; \
        ${getconf_test_functions} ; \
        compare_normal ;
        (( getconf_keys == 0 )) && err_exit \"getconf/normal not working (PATH=\${PATH}).\" ; \
        (( mismatch      > 0 )) && err_exit \"getconf/normal test found \${mismatch} differences (PATH=\${PATH}).\" ; \
        exit $((Errors))"
    (( Errors+=$? ))


    ## run test with path argument
    compare_path
    (( getconf_keys == 0 )) && err_exit "getconf/path not working."
    (( mismatch      > 0 )) && err_exit "getconf/path test found ${mismatch} differences."

    # run the same test in a seperate shell
    # (see comment above)
    ${SHELL} -c "integer mismatch ; \
        integer getconf_keys ; \
        ${getconf_test_functions} ; \
        compare_path ;
        (( getconf_keys == 0 )) && err_exit \"getconf/normal not working (PATH=\${PATH}).\" ; \
        (( mismatch      > 0 )) && err_exit \"getconf/normal test found \${mismatch} differences (PATH=\${PATH}).\" ; \
        exit $((Errors))"
    (( Errors+=$? ))
done


# tests done
exit $((Errors))