Refresh the server configs and drop `unsafe-inline`

The inline handlers and the auto-submitting selects are gone, so
`script-src` no longer needs it, and t0004 now checks that the three
configs pin the same policy.

1 file changed, 15 insertions, 17 deletions

diff --git a/custom/servers/lighttpd.conf b/custom/servers/lighttpd.conf
index dcfb43d..27c325d 100644
--- a/custom/servers/lighttpd.conf
+++ b/custom/servers/lighttpd.conf
@@ -22,10 +22,9 @@
 # straight off disk and must never be routed through cgit.
 
 
-# A plain assignment rather than "+=", since this config stands on its own and
-# there is no distro base list to append to. mod_alias maps URL paths onto
-# files, mod_setenv injects CGIT_CONFIG and the response headers, and mod_cgi
-# runs cgit.cgi. Adding mod_accesslog here is what the access log below needs.
+# A plain assignment rather than "+=", since this config stands on its own
+# and there is no distro base list to append to. Adding mod_accesslog here
+# is what the access log below needs.
 server.modules = (
     "mod_alias",
     "mod_setenv",
@@ -37,8 +36,8 @@ server.modules = (
 server.port          = 80
 server.username      = "http"             # Debian and Ubuntu use www-data
 server.groupname     = "http"
-server.document-root = "/usr/share/cgit"  # a valid docroot must exist, the
-                                          # alias rules below do the routing
+server.document-root = "/usr/share/cgit"  # a valid docroot must exist. The
+                                          # alias rules below do the routing.
 server.pid-file      = "/run/lighttpd.pid"
 server.errorlog      = "/var/log/lighttpd/error.log"
 accesslog.filename   = "/var/log/lighttpd/access.log"
@@ -76,8 +75,9 @@ $HTTP["host"] == "git.example.org" {
     # Site-wide security headers are set here so they also cover the static
     # assets lighttpd serves. cgit itself sends only the headers the server
     # cannot supply. Those are Status, Content-Type, Content-Length and
-    # Content-Disposition on downloads, a no-store Cache-Control on
-    # unauthenticated responses, the auth filter's Set-Cookie, and on raw
+    # Content-Disposition on downloads, Location on redirects, a no-store
+    # Cache-Control on unauthenticated responses, the auth filter's
+    # Set-Cookie, and on raw
     # repository bytes a nosniff of its own next to the stricter policy
     # "default-src 'none'". Everything else, this policy included, is the
     # server's job.
@@ -89,10 +89,10 @@ $HTTP["host"] == "git.example.org" {
     # what cgit sent, swapping the strict policy on raw repository content
     # for this looser site one. Never switch add to set.
     #
-    # script-src stays self because cgit loads only its own cgit.js, and
-    # style-src allows inline for the diffstat bars. form-action self covers
-    # the login form, the only form cgit renders. If you enable the gravatar
-    # or libravatar avatar filter, add its host to img-src.
+    # form-action self covers the login form, the only form cgit renders. If
+    # you enable the gravatar or libravatar avatar filter, add its host to
+    # img-src. A head-include or repo.head-content that injects a <style>
+    # block needs 'unsafe-inline' added to style-src.
     #
     # Permissions-Policy refuses the browser features a git viewer never asks
     # for, camera and location among them, for everything served here,
@@ -104,7 +104,7 @@ $HTTP["host"] == "git.example.org" {
     # Cross-Origin-Embedder-Policy is deliberately absent because it would
     # break the avatar filters mentioned above.
     setenv.add-response-header = (
-        "Content-Security-Policy" => "default-src 'self'; script-src 'self'; style-src 'self' 'unsafe-inline'; img-src 'self' data:; object-src 'none'; base-uri 'none'; frame-ancestors 'self'; form-action 'self'",
+        "Content-Security-Policy" => "default-src 'self'; script-src 'self'; style-src 'self'; img-src 'self' data:; object-src 'none'; base-uri 'none'; frame-ancestors 'self'; form-action 'self'",
         "X-Content-Type-Options" => "nosniff",
         "Referrer-Policy" => "no-referrer",
         "Permissions-Policy" => "accelerometer=(), autoplay=(), camera=(), display-capture=(), geolocation=(), gyroscope=(), magnetometer=(), microphone=(), midi=(), payment=(), picture-in-picture=(), usb=()",
@@ -116,10 +116,8 @@ $HTTP["host"] == "git.example.org" {
     # it is hard to undo once browsers have seen it.
     #setenv.add-response-header += ( "Strict-Transport-Security" => "max-age=63072000; includeSubDomains" )
 
-    # Register the cgit binary as a CGI program. The key cgit.cgi matches the
-    # binary's name and the empty value means the file is itself the program,
-    # with no interpreter in front of it. This is what makes lighttpd split
-    # the trailing path off as PATH_INFO, so never drop it.
+    # Register the cgit binary as a CGI program. The empty value means the
+    # file is itself the program rather than input to an interpreter.
     cgi.assign = ( "cgit.cgi" => "" )
 
     # Routing. lighttpd's alias.url is first-match in declaration order, not