- match fmt with
- | Fmt_text ->
- let body =
- (List.fold_left
- (fun s d -> sprintf "%sdir, %s\n" s d) ""
- (StringSet.elements !dirs)) ^
- (Http_getter_misc.hashtbl_sorted_fold
- (fun uri (annflag, typesflag, bodyflag) cont ->
- sprintf "%sobject, %s, <%s,%s,%s>\n"
- cont uri (if annflag then "YES" else "NO")
- (string_of_ls_flag typesflag) (string_of_ls_flag bodyflag))
- objs "")
- in
- Http_daemon.respond
- ~headers:["Content-Type", "text/plain"] ~body outchan
- | Fmt_xml ->
- let body =
- sprintf
-"<?xml version=\"1.0\" encoding=\"ISO-8859-1\"?>
-<!DOCTYPE ls SYSTEM \"%s/getdtd?uri=ls.dtd\">
-
-<ls>
-%s
-</ls>
-"
- Http_getter_env.my_own_url
- ("\n" ^
- (String.concat
- "\n"
- (List.map
- (fun d -> "<section>" ^ d ^ "</section>")
- (StringSet.elements !dirs))) ^ "\n" ^
- (Http_getter_misc.hashtbl_sorted_fold
- (fun uri (annflag, typesflag, bodyflag) cont ->
- sprintf
-"%s<object name=\"%s\">
-\t<ann value=\"%s\" />
-\t<types value=\"%s\" />
-\t<body value=\"%s\" />
-</object>
-"
- cont uri (if annflag then "YES" else "NO")
- (string_of_ls_flag typesflag)
- (string_of_ls_flag bodyflag))
- objs ""))
- in
- Http_daemon.respond
- ~headers:["Content-Type", "text/xml"] ~body outchan
-in
-let update_from_server logmsg server_url = (* use global maps *)
- debug_print ("Updating information from " ^ server_url);
- let xml_url_of_uri = function
- (* TODO missing sanity checks on server_url, e.g. it can contains $1 *)
- | uri when (Pcre.pmatch ~pat:"^cic:" uri) ->
- Pcre.replace ~pat:"^cic:" ~templ:server_url uri
- | uri when (Pcre.pmatch ~pat:"^theory:" uri) ->
- Pcre.replace ~pat:"^theory:" ~templ:server_url uri
- | uri -> raise (Http_getter_invalid_URI uri)
- in
- let rdf_url_of_uri = function (* TODO as above *)
- | uri when (Pcre.pmatch ~pat:"^helm:rdf.*//cic:" uri) ->
- Pcre.replace ~pat:"^helm:rdf.*//cic:" ~templ:server_url uri
- | uri when (Pcre.pmatch ~pat:"^helm:rdf.*//theory:" uri) ->
- Pcre.replace ~pat:"^helm:rdf.*//theory:" ~templ:server_url uri
- | uri -> raise (Http_getter_invalid_URI uri)
- in
- let log = ref (logmsg ^ "Processing server: " ^ server_url ^ "<br />\n") in
- let (xml_index, rdf_index, xsl_index) =
- (* TODO keeps index in memory, is better to keep them on temp files? *)
- (http_get (server_url ^ "/" ^ Http_getter_env.xml_index),
- http_get (server_url ^ "/" ^ Http_getter_env.rdf_index),
- http_get (server_url ^ "/" ^ Http_getter_env.xsl_index))
- in
- if (xml_index = None && rdf_index = None && xsl_index = None) then
- debug_print (sprintf "Warning: useless server %s" server_url);
- (match xml_index with
- | Some xml_index ->
- (log := !log ^ "Updating XML db ...<br />\n";
- List.iter
- (fun l ->
- try
- (match Pcre.split ~pat:"[ \\t]+" l with
- | [uri; "gz"] -> xml_map#add uri ((xml_url_of_uri uri) ^ ".xml.gz")
- | [uri] -> xml_map#add uri ((xml_url_of_uri uri) ^ ".xml")
- | _ -> log := !log ^ "Ignoring invalid line: " ^ l ^ "<br />\n")
- with Http_getter_invalid_URI uri ->
- log := !log ^ "Ignoring invalid XML URI: " ^ uri ^ "<br />\n")
- (Pcre.split ~pat:"\n+" xml_index)) (* xml_index lines *)
- | None -> ());
- (match rdf_index with
- | Some rdf_index ->
- (log := !log ^ "Updating RDF db ...<br />\n";
- List.iter
- (fun l ->
- try
- (match Pcre.split ~pat:"[ \\t]+" l with
- | [uri; "gz"] -> rdf_map#add uri ((rdf_url_of_uri uri) ^ ".xml.gz")
- | [uri] -> rdf_map#add uri ((rdf_url_of_uri uri) ^ ".xml")
- | _ -> log := !log ^ "Ignoring invalid line: " ^ l ^ "<br />\n")
- with Http_getter_invalid_URI uri ->
- log := !log ^ "Ignoring invalid RDF URI: " ^ uri ^ "<br />\n")
- (Pcre.split ~pat:"\n+" rdf_index)) (* rdf_index lines *)
- | None -> ());
- (match xsl_index with
- | Some xsl_index ->
- (log := !log ^ "Updating XSLT db ...<br />\n";
- List.iter
- (fun l -> xsl_map#add l (server_url ^ "/" ^ l))
- (Pcre.split ~pat:"\n+" xsl_index);
- log := !log ^ "All done!<br />\n")
- | None -> ());
- !log
-in
-
- (* thread action *)
-let callback (req: Http_types.request) outchan =
- try
- debug_print ("Connection from " ^ req#clientAddr);
- debug_print ("Received request: " ^ req#path);
- (match req#path with
- | "/help" -> return_html_msg Http_getter_const.usage_string outchan
- | "/getxml" | "/getxslt" | "/getdtd" | "/resolve" | "/register" ->
- (let uri = req#param "uri" in (* common parameter *)
- match req#path with
- | "/getxml" ->
- let enc = parse_enc req in
- let patch_dtd =
- try parse_patch_dtd req with Http_types.Param_not_found _ -> true
- in
- Http_getter_cache.respond_xml
- ~url:(resolve uri) ~uri ~enc ~patch_dtd outchan
- | "/getxslt" ->
- let patch_dtd =
- try parse_patch_dtd req with Http_types.Param_not_found _ -> true
- in
- Http_getter_cache.respond_xsl ~url:(resolve uri) ~patch_dtd outchan
- | "/getdtd" ->
- let patch_dtd =
- try parse_patch_dtd req with Http_types.Param_not_found _ -> true
- in
- Http_getter_cache.respond_dtd
- ~patch_dtd ~url:(Http_getter_env.dtd_dir ^ "/" ^ uri) outchan
- | "/resolve" ->
- (try
- return_xml_msg
- (sprintf "<url value=\"%s\" />\n" (resolve uri))
- outchan
- with Http_getter_unresolvable_URI uri ->
- return_xml_msg "<unresolved />\n" outchan)
- | "/register" ->
- let url = req#param "url" in
- register uri url;
- return_html_msg "Register done" outchan
- | _ -> assert false)
- | "/update" ->
- (xml_map#clear; rdf_map#clear; xsl_map#clear;
- let log =
- List.fold_left
- update_from_server
- "" (* initial logmsg: empty *)
- (* reverse order: 1st server is the most important one *)
- (List.rev Http_getter_env.servers)
- in
- xml_map#sync; rdf_map#sync; xsl_map#sync;
- return_html_msg log outchan)
- | "/getalluris" ->
- return_all_xml_uris
- (fun uri ->
- (Pcre.pmatch ~pat:"^cic:" uri) &&
- not (Pcre.pmatch ~pat:"\\.types$" uri))
- outchan
- | "/getallrdfuris" ->
- (let classs = req#param "class" in
- try
- let filter =
- let base = "^helm:rdf:www\\.cs\\.unibo\\.it/helm/rdf/" in
- match classs with
- | ("forward" as c) | ("backward" as c) ->
- (fun uri -> Pcre.pmatch ~pat:(base ^ c) uri)
- | c -> raise (Http_getter_invalid_RDF_class c)
- in
- return_all_rdf_uris filter outchan
- with Http_getter_invalid_RDF_class c ->
- raise (Http_getter_bad_request ("Invalid RDF class: " ^ c)))
- | "/ls" -> return_ls (parse_ls_uri req) (parse_output_format req) outchan
- | "/getempty" ->
- Http_daemon.respond ~body:Http_getter_const.empty_xml outchan
- | invalid_request ->
- Http_daemon.respond_error ~status:(`Client_error `Bad_request) outchan)
- with
- | Http_types.Param_not_found attr_name ->
- return_400 (sprintf "Parameter '%s' is missing" attr_name) outchan
- | Http_getter_bad_request msg -> return_html_error msg outchan
- | Http_getter_internal_error msg -> return_html_internal_error msg outchan
- | exc ->
- return_html_error
- ("Uncaught exception: " ^ (Printexc.to_string exc))
- outchan
-in
-
- (* daemon initialization *)
-Http_getter_env.dump_env ();
-flush stdout;
-Unix.putenv "http_proxy" "";
-Http_daemon.start'
- ~timeout:None ~port:Http_getter_env.port ~mode:`Thread callback