--- /dev/null
+(*
+ * Copyright (C) 2003-2004:
+ * Stefano Zacchiroli <zack@cs.unibo.it>
+ * for the HELM Team http://helm.cs.unibo.it/
+ *
+ * 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://helm.cs.unibo.it/
+ *)
+
+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_obj_uri uri = Pcre.pmatch ~pat:"^cic:" uri
+let is_theory_uri uri = Pcre.pmatch ~pat:"^theory:" uri
+let is_cic_uri uri = is_cic_obj_uri uri || is_theory_uri uri
+let is_nuprl_uri uri = Pcre.pmatch ~pat:"^nuprl:" 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 uri_of_string = function
+ | uri when is_rdf_uri uri ->
+ (match Pcre.split ~pat:"//" uri with
+ | [ prefix; uri ] ->
+ let rest =
+ match uri_of_string uri with
+ | Cic_uri xmluri -> xmluri
+ | _ -> raise (Invalid_URI uri)
+ in
+ Rdf_uri (prefix, rest)
+ | _ -> raise (Invalid_URI uri))
+ | uri when is_cic_uri uri -> Cic_uri (Cic (Pcre.replace ~pat:"^cic:" uri))
+ | uri when is_nuprl_uri uri -> Nuprl_uri (Pcre.replace ~pat:"^nuprl:" uri)
+ | uri when is_theory_uri uri ->
+ Cic_uri (Theory (Pcre.replace ~pat:"^theory:" uri))
+ | uri -> raise (Invalid_URI uri)
+
+let patch_xml line =
+ Pcre.replace
+ ~pat:(sprintf "DOCTYPE (.*) SYSTEM\\s+\"%s/"
+ (Lazy.force Http_getter_env.dtd_base_url))
+ ~templ:(sprintf "DOCTYPE $1 SYSTEM \"%s/getdtd?uri="
+ (Lazy.force Http_getter_env.my_own_url))
+ line
+let patch_xsl line =
+ let mk_patch_fun tag line =
+ Pcre.replace
+ ~pat:(sprintf "%s\\s+href=\"" tag)
+ ~templ:(sprintf "%s href=\"%s/getxslt?uri="
+ tag (Lazy.force Http_getter_env.my_own_url))
+ line
+ in
+ let (patch_import, patch_include) =
+ (mk_patch_fun "xsl:import", mk_patch_fun "xsl:include")
+ in
+ patch_include (patch_import line)
+let patch_dtd line =
+ Pcre.replace
+ ~pat:"ENTITY (.*) SYSTEM\\s+\""
+ ~templ:(sprintf "ENTITY $1 SYSTEM \"%s/getdtd?uri="
+ (Lazy.force Http_getter_env.my_own_url))
+ line
+
+let pp_error s =
+ sprintf "<html><body>Http Getter error: %s</body></html>" s
+let pp_internal_error s =
+ sprintf "<html><body>Http Getter Internal error: %s</body></html>" s
+let pp_msg s = sprintf "<html><body>%s</body></html>" s
+let null_pp s = s
+
+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_html_raw = mk_return_fun null_pp "text/html"
+let return_xml_raw = mk_return_fun null_pp "text/xml"
+let return_file
+ ~fname ?contype ?contenc ?(patch_fun = fun x -> x) ?(gunzip = false) outchan
+ =
+ let headers =
+ match (contype, contenc) with
+ | (Some t, Some e) -> ["Content-Encoding", e; "Content-Type", t]
+ | (Some t, None) -> ["Content-Type" , t]
+ | (None, Some e) -> ["Content-Encoding", e]
+ | (None, None) -> []
+ in
+ Http_daemon.send_basic_headers ~code:200 outchan;
+ Http_daemon.send_headers headers outchan;
+ Http_daemon.send_CRLF outchan;
+ if gunzip then begin (* gunzip needed, uncompress file, apply patch_fun to
+ it, compress the result and sent it to client *)
+ let (tmp1, tmp2) =
+ (Http_getter_misc.tempfile (), Http_getter_misc.tempfile ())
+ in
+ Http_getter_misc.gunzip ~keep:true ~output:tmp1 fname; (* gunzip to tmp1 *)
+ let new_file = open_out tmp2 in
+ Http_getter_misc.iter_file (* tmp2 = patch(tmp1) *)
+ (fun line -> output_string new_file (patch_fun line ^ "\n"))
+ tmp1;
+ close_out new_file;
+ Http_getter_misc.gzip ~output:tmp1 tmp2; (* tmp1 = gzip(tmp2); rm tmp2 *)
+ Http_getter_misc.iter_file (* send tmp1 to client as is*)
+ (fun line -> output_string outchan (line ^ "\n"))
+ tmp1;
+ Sys.remove tmp1 (* rm tmp1 *)
+ end else (* no need to gunzip, apply patch_fun directly to file *)
+ Http_getter_misc.iter_file
+ (fun line -> output_string outchan (patch_fun line ^ "\n"))
+ fname
+;;
+let return_400 body outchan = Http_daemon.respond_error ~code:400 ~body outchan
+
projects / helm.git / blobdiff