1 file changed, 0 insertions, 114 deletions
diff --git a/extensions/email-libravatar.lua b/extensions/email-libravatar.lua
deleted file mode 100644
index 812bef5..0000000
--- a/extensions/email-libravatar.lua
+++ /dev/null
@@ -1,114 +0,0 @@
--- cgit email-filter that shows a Libravatar icon next to author names. Use it
--- with the email-filter or repo.email-filter setting and the lua: prefix.
---
---     email-filter=lua:/path/to/email-libravatar.lua
---
--- SUPPORTED LUA
---
--- Lua 5.1, 5.2, 5.3, 5.4 and LuaJIT. Lua 5.5 is not supported, because luaossl
--- has no 5.5 build.
---
--- DEPENDENCY
---
---     luaossl    OpenSSL binding, provides openssl.digest
---                <https://github.com/wahern/luaossl>
---
---     # Debian and Ubuntu
---     sudo apt install luarocks libssl-dev
---     sudo luarocks --lua-version 5.1 install luaossl
---
---     # Fedora
---     sudo dnf install luarocks openssl-devel
---     sudo luarocks --lua-version 5.1 install luaossl
---
---     # macOS with Homebrew
---     brew install luarocks openssl
---     luarocks install luaossl OPENSSL_DIR="$(brew --prefix openssl)"
---
--- PRIVACY
---
--- Every page view sends the visitor's IP address and a hash of each
--- committer's email to a third-party service. Leave this filter off if that is
--- not acceptable for your instance.
---
--- The secure CDN is always used, so the icon loads over https and is never
--- blocked as mixed content. Addresses are hashed with MD5.
-
-local digest = require("openssl.digest")
-
---
--- ===== CONFIGURATION =====
---
-
--- Pixel size of the avatar.
-local avatar_size = 13
-
--- Fallback style for an address with no avatar. See the Libravatar docs for
--- the choices, for example retro, identicon, monsterid or mm.
-local default_image = "retro"
-
--- Avatar endpoint. The secure CDN is used so the image loads over https.
-local base_url = "https://seccdn.libravatar.org/avatar/"
-
--- Text for the image alt attribute.
-local alt_text = "Libravatar"
-
---
--- =========================
---
-
--- State shared across the open, write and close calls of one invocation.
-local buffer = ""
-local avatar = nil
-
-local function hash_hex(input)
-	local b = digest.new("md5"):final(input)
-	local x = ""
-	for i = 1, #b do
-		x = x .. string.format("%.2x", string.byte(b, i))
-	end
-	return x
-end
-
--- Take the address, strip the angle brackets if present, then trim and
--- lowercase as the avatar services expect. Returns nil for a missing or empty
--- address.
-local function normalize_email(email)
-	if email == nil then
-		return nil
-	end
-	local inner = email:match("<(.*)>")
-	if inner ~= nil then
-		email = inner
-	end
-	email = (email:gsub("^%s*(.-)%s*$", "%1")):lower()
-	if email == "" then
-		return nil
-	end
-	return email
-end
-
-function filter_open(email, page)
-	buffer = ""
-	local addr = normalize_email(email)
-	if addr == nil then
-		avatar = nil
-	else
-		avatar = hash_hex(addr)
-	end
-end
-
-function filter_close()
-	if avatar == nil then
-		-- No usable address, render the name without an icon.
-		html(buffer)
-	else
-		html("<img src='" .. base_url .. avatar .. "?s=" .. avatar_size .. "&amp;d=" .. default_image ..
-			"' width='" .. avatar_size .. "' height='" .. avatar_size .. "' alt='" .. alt_text .. "' /> " .. buffer)
-	end
-	return 0
-end
-
-function filter_write(str)
-	buffer = buffer .. str
-end