Improve banner (3.2)

... for readability and bugs to be filed (fixes #2506)

This PR defines a short string for the OpenSSL banner as some suppliers have made them (unnecessarily) long so that it won't fit nice in the banner anymore.

The banner also now omits the built line from openssl as for the user it is normally not important.

testssl.sh

@@ -317,6 +317,7 @@ OSSL_VER=""                             # openssl version, will be auto-determin
 OSSL_VER_MAJOR=0
 OSSL_VER_MINOR=0
 OSSL_VER_APPENDIX="none"
+OSSL_SHORT_STR=""                       # short string for banner
 CLIENT_PROB_NO=1
 
 GOOD_CA_BUNDLE=""                       # A bundle of CA certificates that can be used to validate the server's certificate
@@ -20127,6 +20128,21 @@ find_openssl_binary() {
      OSSL_VER_PLATFORM=$($OPENSSL version -p 2>/dev/null | sed 's/^platform: //')
      OSSL_BUILD_DATE=$($OPENSSL version -a 2>/dev/null | grep '^built' | sed -e 's/built on//' -e 's/: ... //' -e 's/: //' -e 's/ UTC//' -e 's/ +0000//' -e 's/.000000000//')
 
+     # Determine an OpenSSL short string for the banner
+     # E.g MacOS' homebrew and Debian add a library string: OpenSSL 3.3.1 4 Jun 2024 (Library: OpenSSL 3.3.1 4 Jun 2024),
+     # so we omit the part after the round bracket as it breaks formatting and doesn't provide more useful info
+     OSSL_SHORT_STR=$($OPENSSL version 2>/dev/null)
+     OSSL_SHORT_STR=${OSSL_SHORT_STR%\(*}
+     # Now handle strings like this: OpenSSL 1.1.1l-fips  24 Aug 2021 SUSE release 150500.17.34.1
+     # we find the year, remove until first occurrence, re-add it
+     for yr in {2014..2029} ; do
+          if [[ $OSSL_SHORT_STR =~ \ $yr ]] ; then
+               OSSL_SHORT_STR=${OSSL_SHORT_STR%%$yr*}
+               OSSL_SHORT_STR="${OSSL_SHORT_STR}${yr}"
+               break
+          fi
+     done
+
      # see #190, reverting logic: unless otherwise proved openssl has no dh bits
      case "$OSSL_VER_MAJOR.$OSSL_VER_MINOR" in
           1.0.2|1.1.0|1.1.1|3.*) HAS_DH_BITS=true ;;
@@ -20765,47 +20781,56 @@ prepare_arrays() {
 
 mybanner() {
      local bb1 bb2 bb3
+     local spaces="  "
+     local full="$1"
 
      "$QUIET" && return
      "$CHILD_MASS_TESTING" && return
      OPENSSL_NR_CIPHERS=$(count_ciphers "$(actually_supported_osslciphers 'ALL:COMPLEMENTOFALL:@STRENGTH' 'ALL')")
      bb1=$(cat <<EOF
 
-###########################################################
+#####################################################################
-    $PROG_NAME       $VERSION from
 EOF
 )
-     bb2=$(cat <<EOF
+   bb2=$(cat <<EOF
 
-      This program is free software. Distribution and
+  This program is free software. Distribution and modification under
-             modification under GPLv2 permitted.
+  GPLv2 permitted. USAGE w/o ANY WARRANTY. USE IT AT YOUR OWN RISK!
-      USAGE w/o ANY WARRANTY. USE IT AT YOUR OWN RISK!
 
-       Please file bugs @
 EOF
 )
-     bb3=$(cat <<EOF
+   bb3=$(cat <<EOF
 
-###########################################################
+#####################################################################
 EOF
 )
-     pr_bold "$bb1 "
+     prln_bold "$bb1"; out "$spaces" ; pr_bold "$PROG_NAME"; out " version " ; pr_bold "$VERSION" ; out " from "
      pr_boldurl "$SWURL"; outln
      if [[ -n "$GIT_REL" ]]; then
-          pr_bold "    ("
+          out "$spaces"
+          pr_bold "("
           pr_litegrey "$GIT_REL"
           prln_bold ")"
      fi
-     pr_bold "$bb2 "
+     prln_bold "$bb2"
+     out "\n${spaces}" ; out "Please file bugs @ "
      pr_boldurl "https://testssl.sh/bugs/"; outln
      pr_bold "$bb3"
      outln "\n"
-     outln " Using \"$($OPENSSL version 2>/dev/null)\" [~$OPENSSL_NR_CIPHERS ciphers]"
+     out "${spaces}Using "
-     out " on $HNAME:"
+     pr_italic "$OSSL_SHORT_STR"
+     outln "  [~$OPENSSL_NR_CIPHERS ciphers]"
+     out "${spaces}on $HNAME:"
      outln "$OPENSSL_LOCATION"
-     outln " (built: \"$OSSL_BUILD_DATE\", platform: \"$OSSL_VER_PLATFORM\")\n"
+     if [[ -n $full ]] || [[ $DEBUG -ge 1 ]]; then
+          out "${spaces}built: "; pr_italic "$OSSL_BUILD_DATE"; out ", platform: "; prln_italic "$OSSL_VER_PLATFORM"
+          out "${spaces}Using "
+          pr_italic "bash ${BASH_VERSINFO[0]}.${BASH_VERSINFO[1]}.${BASH_VERSINFO[2]}"
+     fi
+     outln
 }
 
+
 calc_scantime() {
           END_TIME=$(date +%s)
           SCAN_TIME=$(( END_TIME - START_TIME ))
@@ -23318,7 +23343,8 @@ parse_cmd_line() {
                get_install_dir
                find_openssl_binary
                prepare_debug
-               mybanner
+               # full banner
+               mybanner true
                exit $ALLOK
                ;;
      esac