Merge pull request #85 from alecmuffett/20201207-kludge-disable-sri

Build kludge_disable_sri for testing

lib.d/do-configure.pl

@@ -593,6 +593,7 @@ my @set_blank = qw(
     host_whitelist_re
     inject_origin
     inject_referer
+    kludge_disable_sri
     log_separate
     nginx_modules_dirs
     no_cache_content_type

lib.d/lint.pl

@@ -55,6 +55,7 @@ my %known =
      'INJECT_ORIGIN' => 1,
      'INJECT_REFERER' => 1,
      'IS_SOFTMAP' => 1,
+     'KLUDGE_DISABLE_SRI' => 1,
      'LEFT_TLD_RE' => 1,
      'LOG_DIR' => 1, # where logs for the current project live
      'LOG_SEPARATE' => 1,

templates.d/nginx.conf.txt

@@ -221,6 +221,17 @@ http {
   # no preserve subs (restore-phase)
   %%ENDIF
 
+  %%IF %KLUDGE_DISABLE_SRI%
+  # disabling sri with a kludge
+  subs_filter
+  "i(ntegrity=\"?sha(?:256|384|512)-)"
+  "_$1"
+  gir
+  ;
+  %%ELSE
+  # not disabling sri with a kludge
+  %%ENDIF
+
   # o2d_re_helper -> if cannot remap, return input. NB: old versions
   # of lua-plugin cannot cope with code like o2d_mappings[o[1]]
   # because of `long bracket syntax`; the `[o[` freaks it out.