diff options
| -rw-r--r-- | plugins/mod_http_files.lua | 120 |
1 files changed, 91 insertions, 29 deletions
diff --git a/plugins/mod_http_files.lua b/plugins/mod_http_files.lua index bdc3a011..764991b8 100644 --- a/plugins/mod_http_files.lua +++ b/plugins/mod_http_files.lua @@ -9,50 +9,112 @@ module:depends("http"); local lfs = require "lfs"; +local os_date = os.date; local open = io.open; local stat = lfs.attributes; local http_base = module:get_option_string("http_files_dir", module:get_option_string("http_path", "www_files")); +local dir_indices = module:get_option("http_files_index", { "index.html", "index.htm" }); +local show_file_list = module:get_option_boolean("http_files_show_list"); --- TODO: Should we read this from /etc/mime.types if it exists? (startup time...?) -local mime_map = { - html = "text/html"; - htm = "text/html"; - xml = "text/xml"; - xsl = "text/xml"; - txt = "text/plain; charset=utf-8"; - js = "text/javascript"; - css = "text/css"; -}; +local mime_map = module:shared("mime").types; +if not mime_map then + mime_map = { + html = "text/html", htm = "text/html", + xml = "application/xml", + txt = "text/plain", + css = "text/css", + js = "application/javascript", + png = "image/png", + gif = "image/gif", + jpeg = "image/jpeg", jpg = "image/jpeg", + svg = "image/svg+xml", + }; + module:shared("mime").types = mime_map; + + local mime_types, err = open(module:get_option_string("mime_types_file", "/etc/mime.types"),"r"); + if mime_types then + local mime_data = mime_types:read("*a"); + mime_types:close(); + setmetatable(mime_map, { + __index = function(t, ext) + local typ = mime_data:match("\n(%S+)[^\n]*%s"..(ext:lower()).."%s") or "application/octet-stream"; + t[ext] = typ; + return typ; + end + }); + end +end + +local cache = setmetatable({}, { __mode = "kv" }); -- Let the garbage collector have it if it wants to. function serve_file(event, path) - local response = event.response; - local orig_path = event.request.path; + local request, response = event.request, event.response; + local orig_path = request.path; local full_path = http_base.."/"..path; - if stat(full_path, "mode") == "directory" then + local attr = stat(full_path); + if not attr then + return 404; + end + + response.headers.last_modified = os_date('!%a, %d %b %Y %H:%M:%S GMT', attr.modification); + + local tag = ("%02x-%x-%x-%x"):format(attr.dev or 0, attr.ino or 0, attr.size or 0, attr.modification or 0); + response.headers.etag = tag; + if tag == request.headers.if_none_match then + return 304; + end + + local data = cache[path]; + if data then + response.headers.content_type = data.content_type; + data = data.data; + elseif attr.mode == "directory" then if full_path:sub(-1) ~= "/" then response.headers.location = orig_path.."/"; return 301; end - if stat(full_path.."index.html", "mode") == "file" then - return serve_file(event, path.."index.html"); + for i=1,#dir_indices do + if stat(full_path..dir_indices[i], "mode") == "file" then + return serve_file(event, path..dir_indices[i]); + end end - -- TODO File listing - return 403; - end - local f, err = open(full_path, "rb"); - if not f then - module:log("warn", "Failed to open file: %s", err); - return 404; - end - local data = f:read("*a"); - f:close(); - if not data then - return 403; + if not show_file_list then + return 403; + else + local html = require"util.stanza".stanza("html") + :tag("head"):tag("title"):text(path):up() + :tag("meta", { charset="utf-8" }):up() + :up() + :tag("body"):tag("h1"):text(path):up() + :tag("ul"); + for file in lfs.dir(full_path) do + if file:sub(1,1) ~= "." then + local attr = stat(full_path..file) or {}; + html:tag("li", { class = attr.mode }) + :tag("a", { href = file }):text(file) + :up():up(); + end + end + data = "<!DOCTYPE html>\n"..tostring(html); + cache[path] = { data = html, content_type = mime_map.html; hits = 0 }; + response.headers.content_type = mime_map.html; + end + + else + local f = open(full_path, "rb"); + data = f and f:read("*a"); + f:close(); + if not data then + return 403; + end + local ext = path:match("%.([^.]*)$"); + local content_type = mime_map[ext]; + cache[path] = { data = data; content_type = content_type; }; + response.headers.content_type = content_type; end - local ext = path:match("%.([^.]*)$"); - response.headers.content_type = mime_map[ext]; -- Content-Type should be nil when not known + return response:send(data); end |