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	Fix HTML headers and footers
This PR ensures that each HTML file produced by testssl.sh only includes a single header, at the top, and a single footer, at the end. It also tries to ensure that the short-version banner is only placed at the top of the HTML file if (1) mass testing is being performed and (2) the results of each test is being placed in a separate file. It also moves some of the logic out of main and into `html_header()`.
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							@@ -160,6 +160,7 @@ LOGFILE=${LOGFILE:-""}                  # logfile if used
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JSONFILE=${JSONFILE:-""}                # jsonfile if used
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CSVFILE=${CSVFILE:-""}                  # csvfile if used
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HTMLFILE=${HTMLFILE:-""}                # HTML if used
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HTMLHEADER=true                         # include HTML headers and footers in HTML file, if one is being created
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APPEND=${APPEND:-false}                 # append to csv/json file instead of overwriting it
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GIVE_HINTS=false                        # give an addtional info to findings
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HAS_IPv6=${HAS_IPv6:-false}             # if you have OpenSSL with IPv6 support AND IPv6 networking set it to yes
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@@ -970,9 +971,30 @@ fileout() { # ID, SEVERITY, FINDING, CVE, CWE, HINT
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################### FILE FORMATING END #########################
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html_header() {
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     local fname_prefix="$1"
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     local fname_prefix
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     # Don't create HTML headers and footers in the following scenarios:
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     #  * HTML output is not being created.
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     #  * mass testing is being performed and each test will have its own HTML file.
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     #  * this is an individual test within a mass test and all HTML output is being placed in a single file.
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     if ! "$do_html" || \
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        ( "$do_mass_testing" && ( [[ -z "$HTMLFILE" ]] || [[ -d "$HTMLFILE" ]] ) ) || \
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        ( "$APPEND" && [[ -n "$HTMLFILE" ]] && [[ ! -d "$HTMLFILE" ]] ); then
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          HTMLHEADER=false
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          return 0
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     fi
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     if "$do_display_only"; then
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          fname_prefix="local-ciphers"
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     elif "$do_mass_testing"; then
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          :
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     elif "$do_mx_all_ips"; then
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          fname_prefix="mx-$URI"
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     else
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          ( [[ -z "$HTMLFILE" ]] || [[ -d "$HTMLFILE" ]] ) && parse_hn_port "${URI}"    # NODE, URL_PATH, PORT, IPADDR and IP46ADDR is set now
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          fname_prefix="$NODE"_"$PORT"
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     fi
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     [[ -z "$fname_prefix" ]] && fname_prefix="$NODE"_"$PORT"
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     if [[ -n "$HTMLFILE" ]] && [[ ! -d "$HTMLFILE" ]]; then
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          rm -f "$HTMLFILE"
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     elif [[ -z "$HTMLFILE" ]]; then
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@@ -994,16 +1016,20 @@ html_header() {
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}
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html_banner() {
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     html_out "## Scan started as: \"$PROG_NAME $CMDLINE\"\n"
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     html_out "## at $HNAME:$OPENSSL_LOCATION\n"
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     html_out "## version testssl: $VERSION ${GIT_REL_SHORT:-$CVS_REL_SHORT} from $REL_DATE\n"
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     html_out "## version openssl: \"$OSSL_VER\" from \"$OSSL_BUILD_DATE\")\n\n"
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     if "$APPEND" && "$HTMLHEADER"; then
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          html_out "## Scan started as: \"$PROG_NAME $CMDLINE\"\n"
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          html_out "## at $HNAME:$OPENSSL_LOCATION\n"
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          html_out "## version testssl: $VERSION ${GIT_REL_SHORT:-$CVS_REL_SHORT} from $REL_DATE\n"
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          html_out "## version openssl: \"$OSSL_VER\" from \"$OSSL_BUILD_DATE\")\n\n"
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     fi
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}
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html_footer() {
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     html_out "</pre>\n"
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     html_out "</body>\n"
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     html_out "</html>\n"
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     if "$HTMLHEADER"; then
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          html_out "</pre>\n"
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          html_out "</body>\n"
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          html_out "</html>\n"
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     fi
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     return 0
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}
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@@ -12517,12 +12543,10 @@ run_mass_testing_parallel() {
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run_mass_testing() {
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     local cmdline=""
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     local global_cmdline=${CMDLINE%%--file*}
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     local html_header=""
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     if [[ ! -r "$FNAME" ]] && "$IKNOW_FNAME"; then
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          fatal "Can't read file \"$FNAME\"" "2"
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     fi
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     [[ -n "$HTMLFILE" ]] && [[ ! -d "$HTMLFILE" ]] && html_header="--no-html-header"
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     pr_reverse "====== Running in file batch mode with file=\"$FNAME\" ======"; outln "\n"
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     APPEND=false # Make sure we close out our files
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@@ -12530,7 +12554,7 @@ run_mass_testing() {
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          cmdline=$(filter_input "$cmdline")
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          [[ -z "$cmdline" ]] && continue
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          [[ "$cmdline" == "EOF" ]] && break
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          cmdline="$0 $global_cmdline --warnings=batch -q $html_header --append $cmdline"
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          cmdline="$0 $global_cmdline --warnings=batch -q --append $cmdline"
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          draw_line "=" $((TERM_WIDTH / 2)); outln;
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          outln "$cmdline"
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          $cmdline
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@@ -13142,20 +13166,7 @@ lets_roll() {
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initialize_globals
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parse_cmd_line "$@"
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if ( ! "$do_mass_testing" || ( [[ -n "$HTMLFILE" ]] && [[ ! -d "$HTMLFILE" ]] ) ); then
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     if "$do_display_only"; then
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          html_header "local-ciphers"
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     elif "$do_mass_testing"; then
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          html_header
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     elif "$do_mx_all_ips"; then
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          html_header "mx-$URI"
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     else
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          ( [[ -z "$HTMLFILE" ]] || [[ -d "$HTMLFILE" ]] ) && parse_hn_port "${URI}"    # NODE, URL_PATH, PORT, IPADDR and IP46ADDR is set now
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          html_header
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     fi
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fi
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html_header
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get_install_dir
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set_color_functions
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maketempf
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