--- /dev/null
+(*
+ * Copyright (C) 2000, HELM Team.
+ *
+ * This file is part of HELM, an Hypertextual, Electronic
+ * Library of Mathematics, developed at the Computer Science
+ * Department, University of Bologna, Italy.
+ *
+ * HELM is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * HELM is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with HELM; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
+ * MA 02111-1307, USA.
+ *
+ * For details, see the HELM World-Wide-Web page,
+ * http://cs.unibo.it/helm/.
+ *)
+
+open Http_getter_types;;
+open Printf;;
+
+let string_of_ls_flag = function No -> "NO" | Yes -> "YES" | Ann -> "ANN"
+let string_of_encoding = function
+ | Enc_normal -> "Normal"
+ | Enc_gzipped -> "GZipped"
+
+let is_cic_uri uri = Pcre.pmatch ~pat:"^cic:" uri
+let is_theory_uri uri = Pcre.pmatch ~pat:"^theory:" uri
+let is_xml_uri uri = is_cic_uri uri || is_theory_uri uri
+let is_rdf_uri uri = Pcre.pmatch ~pat:"^helm:rdf(.*):(.*)//(.*)" uri
+let is_xsl_uri uri = Pcre.pmatch ~pat:"^\\w+\\.xsl" uri
+
+let rec http_getter_uri_of_string = function
+ | uri when is_rdf_uri uri ->
+ (match Pcre.split ~pat:"//" uri with
+ | [ prefix; uri ] ->
+ let rest =
+ match http_getter_uri_of_string uri with
+ | Xml_uri xmluri -> xmluri
+ | _ -> raise (Http_getter_invalid_URI uri)
+ in
+ Rdf_uri (prefix, rest)
+ | _ -> raise (Http_getter_invalid_URI uri))
+ | uri when is_cic_uri uri -> Xml_uri (Cic (Pcre.replace ~pat:"^cic:" uri))
+ | uri when is_theory_uri uri ->
+ Xml_uri (Theory (Pcre.replace ~pat:"^theory:" uri))
+ | uri -> raise (Http_getter_invalid_URI uri)
+
+let patch_xml line =
+ Pcre.replace
+ ~pat:(sprintf "DOCTYPE (.*) SYSTEM\\s+\"%s/" Http_getter_env.dtd_base_url)
+ ~templ:(
+ sprintf "DOCTYPE $1 SYSTEM \"%s/getdtd?uri=" Http_getter_env.my_own_url)
+ line
+let patch_xsl =
+ let mk_patch_fun tag line =
+ Pcre.replace
+ ~pat:(sprintf "%s\\s+href=\"" tag)
+ ~templ:(
+ sprintf "%s href=\"%s/getxslt?uri=" Http_getter_env.my_own_url tag)
+ line
+ in
+ let (patch_import, patch_include) =
+ (mk_patch_fun "xsl:import", mk_patch_fun "xsl:include")
+ in
+ fun line -> patch_include (patch_import line)
+let patch_dtd line =
+ Pcre.replace
+ ~pat:"ENTITY (.*) SYSTEM\\s+\""
+ ~templ:(
+ sprintf "ENTITY $1 SYSTEM \"%s/getdtd?uri=" Http_getter_env.my_own_url)
+ line
+
+let pp_error =
+ sprintf "<html><body><h1>Http Getter error: %s</h1></body></html>"
+let pp_internal_error =
+ sprintf "<html><body><h1>Http Getter Internal error: %s</h1></body></html>"
+let pp_msg = sprintf "<html><body><h1>%s</h1></body></html>"
+
+let mk_return_fun pp_fun contype msg outchan =
+ Http_daemon.respond
+ ~body:(pp_fun msg)
+ ~headers:["Content-Type", contype]
+ outchan
+
+let return_html_error = mk_return_fun pp_error "text/html"
+let return_html_internal_error = mk_return_fun pp_internal_error "text/html"
+let return_html_msg = mk_return_fun pp_msg "text/html"
+let return_xml_msg = mk_return_fun pp_msg "text/xml"
+ (**
+ @param fname name of the file to be sent
+ @param contype Content-Type header value
+ @param contenc Content-Enconding header value
+ @param patch_fun function used to patch file contents
+ @param outchan output channel over which sent file fname *)
+let return_file ~fname ?contype ?contenc ?(patch_fun = fun x -> x) outchan =
+ let headers =
+ match (contype, contenc) with
+ | (Some t, Some e) -> [ "Content-Type", t; "Content-Enconding", e ]
+ | (Some t, None) -> [ "Content-Type" , t ]
+ | (None, Some e) -> [ "Content-Enconding", e ]
+ | (None, None) -> []
+ in
+ Http_daemon.send_basic_headers outchan;
+ Http_daemon.send_headers headers outchan;
+ Http_daemon.send_CRLF outchan;
+ Http_getter_misc.iter_file
+ (fun line -> output_string outchan (patch_fun line ^ "\n"))
+ fname
+ (* return a bad request http response *)
+let return_400 body outchan = Http_daemon.respond_error ~code:400 ~body outchan
+
+let wget ?output url =
+ let flags =
+ (match output with Some file -> ["-O " ^ file] | None -> []) @ [url]
+ in
+ Shell.call
+ ~stdout:Shell.to_dev_null ~stderr:Shell.to_dev_null [Shell.cmd "wget" flags]
+
+ (* TODO gzip and gunzip create executables file, but umask seems to be
+ correctly inherited from the shell .... boh *)
+
+ (* stderr shown as usual *)
+let gzip ?(keep = false) fname =
+ if keep then (* keep original file *)
+ Shell.call
+ ~stdout:(Shell.to_file (fname ^ ".gz"))
+ [Shell.cmd "gzip" ["-f"; "-c"; fname]]
+ else (* don't keep original file *)
+ Shell.call [Shell.cmd "gzip" ["-f"; fname]]
+
+ (* stderr shown as usual *)
+let gunzip ?(keep = false) fname =
+ if not (Pcre.pmatch ~pat:"\\.gz$" fname) then
+ failwith "gunzip: source file doesn't end with '.gz'";
+ let basename = Pcre.replace ~pat:"\\.gz$" fname in
+ if keep then (* keep original file *)
+ Shell.call
+ ~stdout:(Shell.to_file basename)
+ [Shell.cmd "gunzip" ["-f"; "-c"; fname]]
+ else (* don't keep original file *)
+ Shell.call [Shell.cmd "gunzip" ["-f"; fname]]
+
+let tempfile () =
+ let buf = Buffer.create 28 in (* strlen("/tmp/fileSzb3Mw_http_getter") *)
+ Shell.call
+ ~stdout:(Shell.to_buffer buf)
+ [Shell.cmd "tempfile" ["--suffix=_http_getter"]];
+ Pcre.replace ~pat:"\n" (Buffer.contents buf)
+
projects / helm.git / blobdiff