source: gsdl/trunk/runtime-src/src/recpt/depositoraction.cpp@ 16680

/**********************************************************************
 *
 * depositoraction.cpp -- 
 * Copyright (C) 2000  The New Zealand Digital Library Project
 *
 * A component of the Greenstone digital library software
 * from the New Zealand Digital Library Project at the
 * University of Waikato, New Zealand.
 *
 * This program 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.
 *
 * This program 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 this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 *********************************************************************/

#include "gsdl_modules_cfg.h"
#ifdef GSDL_USE_DEPOSITOR_ACTION

// note that the collectoraction relies on having direct access to a
// collections configuration file. this breaks the separation between
// receptionist and collection server and so is not suitable (at least
// in its current form) for use when collection servers are separate 
// from the receptionist (e.g. when using the CORBA protocol).

// following line required to get fstream.filedesc() on darwin (Mac OS X)
#define _STREAM_COMPAT  1
// required for utsname on solaris???
#define _XOPEN_SOURCE 1
#define _XOPEN_SOURCE_EXTENDED 1

#include "depositoraction.h"
#include "OIDtools.h"
#include "fileutil.h"
#include "cfgread.h"
#include "gsdltools.h"
#include "gsdltimes.h"
#include "argdb.h"
#include "cgiutils.h"

#include <stdio.h>
//#include <strings.h> // seems to be needed for gcc 2.95, but not particularly happy it
#include <fcntl.h>
#include <time.h>

#if !defined (__WIN32__)
#include <sys/utsname.h>
#include <unistd.h>
#endif

#include <new>
//#include <string>
#include <vector>
#include <stdexcept>
#include <iostream>
//#include <cstdlib>

depositoraction::depositoraction () 
  : wizardaction()
{
  macro_prefix = "di1";  //deposit item
  lastpage = 0; 

  cgiarginfo arg_ainfo;
  arg_ainfo.shortname = "a";
  arg_ainfo.longname = "action";
  arg_ainfo.multiplechar = true;
  arg_ainfo.defaultstatus = cgiarginfo::weak;
  arg_ainfo.argdefault = "depositor";
  arg_ainfo.savedarginfo = cgiarginfo::must;
  argsinfo.addarginfo (NULL, arg_ainfo);

  arg_ainfo.shortname = "p";
  arg_ainfo.longname = "page";
  arg_ainfo.multiplechar = true;
  arg_ainfo.defaultstatus = cgiarginfo::weak;
  arg_ainfo.argdefault = "select";   
  arg_ainfo.savedarginfo = cgiarginfo::must;
  argsinfo.addarginfo (NULL, arg_ainfo);

  //furthest page that has been visited
  arg_ainfo.shortname = "di1lastpage";
  arg_ainfo.longname = "depositor specific"; 
  arg_ainfo.multiplechar = true;
  arg_ainfo.defaultstatus = cgiarginfo::weak;
  arg_ainfo.argdefault = "0";   
  arg_ainfo.savedarginfo = cgiarginfo::must;
  argsinfo.addarginfo (NULL, arg_ainfo);
  
  // the fileupload info that cgiwrapper produces - we parse the fileupload_t
  // and set di1userfile, di1userfilesize
  arg_ainfo.shortname = "di1userfileinfo";
  arg_ainfo.longname = "depositor specific"; 
  arg_ainfo.fileupload = true;
  arg_ainfo.savedarginfo = cgiarginfo::mustnot;  
  argsinfo.addarginfo (NULL, arg_ainfo);

  // essential: reset fileupload to default as we are not setting 
  // it for each arg
  arg_ainfo.fileupload = false;

  //the name of the file to be added
  arg_ainfo.shortname = "di1userfile";
  arg_ainfo.longname = "depositor specific"; 
  arg_ainfo.multiplechar = true;
  arg_ainfo.defaultstatus = cgiarginfo::weak;
  arg_ainfo.argdefault = g_EmptyText;   
  arg_ainfo.savedarginfo = cgiarginfo::must;
  argsinfo.addarginfo (NULL, arg_ainfo);

  //the file size
  arg_ainfo.shortname = "di1userfilesize";
  arg_ainfo.longname = "depositor specific"; 
  arg_ainfo.multiplechar = true;
  arg_ainfo.defaultstatus = cgiarginfo::weak;
  arg_ainfo.argdefault = "0";   
  arg_ainfo.savedarginfo = cgiarginfo::must;
  argsinfo.addarginfo (NULL, arg_ainfo);

 //the file timestamp
  arg_ainfo.shortname = "di1timestamp";
  arg_ainfo.longname = "depositor specific"; 
  arg_ainfo.multiplechar = true;
  arg_ainfo.defaultstatus = cgiarginfo::weak;
  arg_ainfo.argdefault = "0";   
  arg_ainfo.savedarginfo = cgiarginfo::must;
  argsinfo.addarginfo (NULL, arg_ainfo);

  // temporary directory name for this collector
  // session
  arg_ainfo.shortname = "di1tmp";
  arg_ainfo.longname = "depositor specific";
  arg_ainfo.multiplechar = true;
  arg_ainfo.defaultstatus = cgiarginfo::weak;
  arg_ainfo.argdefault = g_EmptyText;
  arg_ainfo.savedarginfo = cgiarginfo::must;
  argsinfo.addarginfo (NULL, arg_ainfo);

//   arg_ainfo.shortname = "di1fullname";
//   arg_ainfo.longname = "depositor specific";
//   arg_ainfo.multiplechar = true;
//   arg_ainfo.defaultstatus = cgiarginfo::weak;
//   arg_ainfo.argdefault = g_EmptyText;
//   arg_ainfo.savedarginfo = cgiarginfo::mustnot; // saved on disk
//   argsinfo.addarginfo (NULL, arg_ainfo);

  arg_ainfo.shortname = "di1dirname";
  arg_ainfo.longname = "depositor specific";
  arg_ainfo.multiplechar = true;
  arg_ainfo.defaultstatus = cgiarginfo::weak;
  arg_ainfo.argdefault = g_EmptyText;
  arg_ainfo.savedarginfo = cgiarginfo::must;
  argsinfo.addarginfo (NULL, arg_ainfo);

  arg_ainfo.shortname = "di1contactemail";
  arg_ainfo.longname = "depositor specific";
  arg_ainfo.multiplechar = true;
  arg_ainfo.defaultstatus = cgiarginfo::weak;
  arg_ainfo.argdefault = g_EmptyText;
  arg_ainfo.savedarginfo = cgiarginfo::mustnot; // saved on disk
  argsinfo.addarginfo (NULL, arg_ainfo);

//   arg_ainfo.shortname = "di1clone";
//   arg_ainfo.longname = "depositor specific";
//   arg_ainfo.multiplechar = false;
//   arg_ainfo.defaultstatus = cgiarginfo::weak;
//   arg_ainfo.argdefault = "0";
//   arg_ainfo.savedarginfo = cgiarginfo::mustnot; // saved on disk
//   argsinfo.addarginfo (NULL, arg_ainfo);

//   arg_ainfo.shortname = "di1clonecol";
//   arg_ainfo.longname = "depositor specific";
//   arg_ainfo.multiplechar = true;
//   arg_ainfo.defaultstatus = cgiarginfo::weak;
//   arg_ainfo.argdefault = g_EmptyText;
//   arg_ainfo.savedarginfo = cgiarginfo::mustnot; // saved on disk
//   argsinfo.addarginfo (NULL, arg_ainfo);

//   arg_ainfo.shortname = "cfgfile";
//   arg_ainfo.longname = "configuration file contents";
//   arg_ainfo.multiplechar = true;
//   arg_ainfo.defaultstatus = cgiarginfo::weak;
//   arg_ainfo.argdefault = g_EmptyText;
//   arg_ainfo.savedarginfo = cgiarginfo::mustnot;
//   argsinfo.addarginfo (NULL, arg_ainfo);

//   // will be set if we arrived at the "configure collection" page
//   // via the "changing an existing collection" page
//   arg_ainfo.shortname = "di1econf";
//   arg_ainfo.longname = "depositor specific";
//   arg_ainfo.multiplechar = false;
//   arg_ainfo.defaultstatus = cgiarginfo::weak;
//   arg_ainfo.argdefault = "0";
//   arg_ainfo.savedarginfo = cgiarginfo::must;
//   argsinfo.addarginfo (NULL, arg_ainfo);

  // wizard uses this to see if we are working with an existing collection:
  // set the default to 1
  arg_ainfo.shortname = "di1esrce";
  arg_ainfo.longname = "depositor specific";
  arg_ainfo.multiplechar = false;
  arg_ainfo.defaultstatus = cgiarginfo::weak;
  arg_ainfo.argdefault = "1";
  arg_ainfo.savedarginfo = cgiarginfo::must;
  argsinfo.addarginfo (NULL, arg_ainfo);

//   arg_ainfo.shortname = "di1input";
//   arg_ainfo.longname = "depositor specific";
//   arg_ainfo.multiplechar = true;
//   arg_ainfo.multiplevalue = true;
//   arg_ainfo.defaultstatus = cgiarginfo::weak;
//   arg_ainfo.argdefault = g_EmptyText;
//   arg_ainfo.savedarginfo = cgiarginfo::mustnot; // saved on disk
//   argsinfo.addarginfo (NULL, arg_ainfo);

//   //we don't need this in the depositor
//   arg_ainfo.shortname = "di1inputtype";
//   arg_ainfo.longname = "depositor specific";
//   arg_ainfo.multiplechar = true;
//   arg_ainfo.multiplevalue = true;
//   arg_ainfo.defaultstatus = cgiarginfo::weak;
//   arg_ainfo.argdefault = g_EmptyText;
//   arg_ainfo.savedarginfo = cgiarginfo::mustnot; // saved on disk
//   argsinfo.addarginfo (NULL, arg_ainfo);

}

depositoraction::~depositoraction () {
}


bool depositoraction::check_cgiargs (cgiargsinfoclass &argsinfo, cgiargsclass &args, recptprotolistclass * protos, ostream &logout) {

  wizardaction::check_cgiargs(argsinfo,args,protos,logout);

  text_t &current_page = args["p"];

  // note that the "bildstatus" and "bildframe1" pages don't actually do anything
  // functional so we don't need to worry about authenticating them (it's the 
  // underlying "bild" page that does the building (and creates the frameset))
  // This helps us overcome a bit of a problem we have with multiple pages trying
  // to read from the key.db database at the same time.

  //right now, anyone can do anything until it's time to build
  if (current_page == "select") {
    //authenticate the user if authentication is available
    args["uan"] = 1;
    args["ug"] = "all-collections-editor";
  }


  //Check to see if a file was specified
  //if so, upload it and set the di1userfile, di1userfilesize, and 
  //di1timestamp args.
  //every time a new file is specified, a new timestamped folder is 
  //created.  

  // This doesn't create a problem but is inefficient (wasted space)
  // Consider recoding at some point in the future.

  fileupload_t *fileupload = args.getargfile("di1userfileinfo");

  if (fileupload != NULL) {

    if (!(*fileupload).tmp_name.empty() && file_exists((*fileupload).tmp_name)) {
      // create the timestamp
      time_t timestamp = time(NULL);
      text_t timestamp_str(timestamp); 

      args["di1timestamp"] = timestamp_str;

      // set filename and size from the fileupload struct
      args["di1userfilesize"] = (*fileupload).size;
      args["di1userfile"] = (*fileupload).name;
      // copy the file into its temporary location
      text_t tmpdir = filename_cat(gsdlhome,"tmp",args["di1tmp"],timestamp_str);
      bool tflag = mk_dir(tmpdir);
      text_t tmpfile = filename_cat(tmpdir,(*fileupload).name);
      if (!file_copy((*fileupload).tmp_name, tmpfile)) {
    cerr << "Depositor error: cannot save uploaded fileto  "<<tmpfile<<endl;
      } else {
    cerr << "Depositor: saved uploaded file to "<<tmpfile<<endl;
      }
    } 
  }
  
  if (current_page == "select") {  
 
    //make sure the last page arg is re-set to zero 
    //since a new collection is being chosen
    args["di1lastpage"] = "0";

    // assign (and create) a temporary directory This will create a new
    // tbuild directory every time the user goes back to select a new
    // collection.  It causes no problems except wasted space.  Should be
    // addressed in the future
    if (assign_tmpname (args, logout)==false) {
      // there was an error creating the tmp dir
      message="tmpfail";
      return true; // true because we could still parse the arguments
    }

    // clean up any old builds left laying about in the tmp directory
    // (note that it's possible this could take some time if there's a huge
    // partially built collecton laying about so we'll make it an asynchronous
    // system call)
    gsdl_system ("perl -S cleantmp.pl", false, logout);

  }

  if (current_page == "bildstatus" || current_page == "bildcancel") {
    // if .final file exists then build has finished
    text_t fbld = filename_cat (gsdlhome, "tmp", args[macro_prefix + "tmp"], args[macro_prefix + "dirname"] + ".bld.final");
    if (file_exists (fbld)) {
      char *fbldc = fbld.getcstr();
      ifstream fbld_in (fbldc);
      if (fbld_in) {
    failcode = fbld_in.get();
    fbld_in.close();
    if (failcode == '0') {
      // success - we need to create and configure a collection server for the
      // newly built collection (for fastcgi and local library where
      // initialization isn't going to be redone when the user clicks the
      // "view your new collection" button
      create_colserver (args[macro_prefix + "dirname"], logout);
      current_page = "bilddone";
    }
    else current_page = "bildfail";
      } else {
    // assume build failed (we shouldn't get here though ... right?)
    current_page = "bildfail";
      }
      delete []fbldc;
    }
  }

  //is it a step page?
  text_t::const_iterator here = current_page.begin();
  text_t::const_iterator end = current_page.end();
  text_t stepstring = substr(here,here+4);

  //if so, increment the step count 
  //this should not be going up more than one at a time. 
  if(stepstring == "step") {
    text_t currpage_textt = substr(here+4,here+5);
    int currpage = currpage_textt.getint();

    text_t lastpage_textt = args["di1lastpage"]; 
    int lastpage = lastpage_textt.getint(); 
    if (currpage > lastpage) {
      lastpage++; 
      text_t lastpage_textt(lastpage); 
      args["di1lastpage"] = lastpage_textt;      
    }

    // create cached metadata values
    text_t cached_metadata_values = "";
    cgiargsclass::const_iterator args_here = args.begin();
    cgiargsclass::const_iterator args_end = args.end();
    while (args_here != args_end) {
      text_t args_name = (*args_here).first;
      int prefix_len = macro_prefix.size();
      text_t args_prefix = substr(args_name.begin(),args_name.begin()+prefix_len+3);

      if (args_prefix == (macro_prefix+"md.")) {     
    text_t args_val = args[args_name];
    text_t args_suffix = substr(args_name.begin()+prefix_len+3,args_name.end()); 

    text_tarray mdvalues;
    splitchar (args_val.begin(), args_val.end(), ',', mdvalues);
    int numvalues = mdvalues.size();

    for (int i = 0; i < numvalues; ++i) {
      if (!mdvalues[i].empty()) {         
        decode_cgi_arg(mdvalues[i]);

        if (cached_metadata_values == "") {
          cached_metadata_values = "var CachedMDValues = new Array(\\{";
        } else {
          cached_metadata_values += ",";
        }

        cached_metadata_values += "\"" + args_name + "\":\"" + args_val + "\"";
      }
    }   
      }
      ++args_here;
    }

    if (cached_metadata_values != "") {
      cached_metadata_values += "\\});";
      args["cachedMDValues"] = cached_metadata_values;
    }
  }
  return true;
}  


void depositoraction::define_internal_macros (displayclass &disp, cgiargsclass &args, 
                          recptprotolistclass *protos, ostream &logout) {

  // define_internal_macros sets some/all of the following macros (depending
  // on cgiargs):
  //
  // _pagescriptextra_
  // _header_
  // _depositorbar_
  // _textfailmsg_
  // _di1userfile_
  // _di1userfilesize_

  text_t &depositor_page = args["p"];
  
  // set _pagescriptextra_ macro to _cpagescriptextra_
  disp.setmacro ("pagescriptextra", "depositor", "_" + depositor_page + "scriptextra_");

  if (depositor_page == "bildstatus" || depositor_page == "bilddone" || 
      depositor_page == "bildfail" || depositor_page == "bildframe1" || 
      depositor_page == "select") {
    disp.setmacro ("header", "depositor", "_" + depositor_page + "header_");
  }

  if (depositor_page == "bildstatus") {
    set_statusline (disp, args, logout);
  }

  if (depositor_page == "select") {
    set_fullnamemenu (disp, args, protos, logout);
  }

  //how many pages in collection?
  //we need a _depositorbar_ for each

  text_t numsteps_str;
  disp.expandstring("depositor", "_numsteps_", numsteps_str);
  int numsteps = numsteps_str.getint();
   
  //is the page a step page? 

  text_t::const_iterator here = depositor_page.begin();
  text_t::const_iterator end = depositor_page.end();
  text_t stepstring = substr(here,here+4);

  if((stepstring) == "step" || (depositor_page == "depositonly") ) {
    disp.setmacro("di1userfile","depositor",args["di1userfile"]);
    disp.setmacro("di1userfilesize","depositor",args["di1userfilesize"]);
  }

  //set up the depositor bar
  text_t depositorbar = "<table class=wizardbar border=0 cellspacing=4 cellpadding=0><tr>\n";

  if(stepstring == "step") {   
    // check configured metadata elements
    if (args["metadataconf"] == "var DepositorMDFields = new Array();" || args["metadataconf"] == "") {
      text_t cfgfile_name = filename_cat (collecthome, args[macro_prefix + "dirname"], "etc", "collect.cfg");
      text_t cfgfile_content;
      text_t metadata_str;
      
      if (read_file (cfgfile_name, cfgfile_content)) {
    text_t::const_iterator here = cfgfile_content.begin();
    text_t::const_iterator end = cfgfile_content.end();
    while (here != end) {
      here = findchar (here, end, 'd');
      if (here == end) break;
      if ((here+17 < end) && (substr (here, here+17) == "depositormetadata")) {
        here = findchar (here, end, '"');
        if (here == end) break;  
        text_t enddelimit = "\"\n";
        getdelimitstr (here+1, end, enddelimit, metadata_str);
        args["metadataconf"] = "var DepositorMDFields = new Array("+metadata_str+");";      
      }
      ++here;
    }
      }

      if (metadata_str == "") {
    args["metadataconf"] = "var DepositorMDFields = new Array({\"name\":\"dc.Title\",\"label\":\"Title\",\"tooltip\":\"dc.Title: A name given to the resource.\",\"type\":\"text\"}, {\"name\":\"dc.Creator\",\"label\":\"Creator\",\"tooltip\":\"dc.Creator: An entity primarily responsible for making the content of the resource.\",\"type\":\"text\"}, {\"name\":\"dc.Description\",\"label\":\"Description\",\"tooltip\":\"dc.Description: An account of the content of the resource.\",\"type\":\"textarea\"});";
      }
    }

    here = depositor_page.begin();
    text_t stepnums = substr(here+4,here+5); 
    int stepnum = stepnums.getint();

    text_t lastpage_textt = args["di1lastpage"];
    int lastpage = lastpage_textt.getint(); 
    
    // again, begin with the select bar...
    //the first button - selecting a collection
    for(int i = 1; i <= numsteps; i++) {
      text_t numstr(i); 
      if(i <= lastpage && i == stepnum) {
    depositorbar += get_button (args,depositor_page, "yellow", "step"+numstr, false);
      } else if (i <= lastpage) {
    depositorbar += get_button (args,depositor_page, "yellow", "step"+numstr, true); 
      } else if((i == lastpage+1)){
    depositorbar += get_button (args,depositor_page, "green", "step"+numstr, true);       
      } else { 
    depositorbar += get_button (args,depositor_page, "grey", "step"+numstr, false);       
      }
      depositorbar += "<td>_icongreyarrow_</td>\n";

    }    

    //the build and preview pages are always last
    if(lastpage == numsteps) {
      depositorbar += get_button (args,depositor_page, "green", "laststep", true);
    } else {
      depositorbar += get_button (args,depositor_page, "grey", "laststep", false);
    }

    text_t laststep_textt;
    disp.expandstring("depositor", "_laststep_", laststep_textt);
    if(laststep_textt == "bild") {
      depositorbar += "<td>_icongreyarrow_</td>\n";
      depositorbar += get_button (args,depositor_page, "grey", "view", false);
    }
    depositorbar += "</tr><tr>"; 

    for(int j = 1; j <= 2*(stepnum-1); j++) {
      depositorbar += "<td></td>";
    }
    depositorbar += "<td align=center>_icongreyuparrow_</td>\n";    

    depositorbar += "</tr></table>\n";

    // set the javascript so that the metadata form can read the existing values
    if (args["cachedMDValues"] != "") {
      disp.setmacro("cachedmetadatavalues", "depositor", args["cachedMDValues"]);
    }
    if (args["metadataconf"] != "") {
      disp.setmacro("metadataconf", "depositor", args["metadataconf"]);
    }    
  }
  
  if ((depositor_page == "bildcancel") || (depositor_page == "bildfail")) {
  
    for(int i = 1; i <= numsteps; i++) {

      text_t numstr(i); 
      depositorbar += get_button (args,depositor_page, "yellow", "step"+numstr, true);       
      depositorbar += "<td>_icongreyarrow_</td>\n";

    }

    //the build and preview pages are always last
    depositorbar += get_button (args,depositor_page, "green", "laststep", true);
    depositorbar += "<td>_icongreyarrow_</td>\n";
    depositorbar += get_button (args,depositor_page, "grey", "view", false); 

    depositorbar += "</tr><tr>"; 

    for(int j = 1; j <= 2*numsteps; j++) {
      depositorbar += "<td></td>";
    }
    depositorbar += "<td align=center>_icongreyuparrow_</td>\n";    

    depositorbar += "</tr></table>\n";

  }

  if(depositor_page == "bilddone"){
    
    for(int i = 1; i <= numsteps; i++) {

      text_t numstr(i); 
      depositorbar += get_button (args, depositor_page, "grey", "step"+numstr, false);       
      depositorbar += "<td>_icongreyarrow_</td>\n";

    }

    //the build and preview pages are always last
    depositorbar += get_button (args,depositor_page, "yellow", "laststep", false);
    depositorbar += "<td>_icongreyarrow_</td>\n";
    depositorbar += get_button (args,depositor_page, "green", "view", true);

    depositorbar += "</tr><tr>"; 

    for(int j = 1; j <= 2*numsteps; j++) {
      depositorbar += "<td></td>";
    }
    depositorbar += "<td align=center>_icongreyuparrow_</td>\n";    

    depositorbar += "</tr></table>\n";
  }
  disp.setmacro ("depositorbar", "depositor", depositorbar);

  if (depositor_page == "bildfail") {
 
    text_t textfailmsg = "_textfailmsg";
    textfailmsg.push_back(failcode);
    textfailmsg.push_back('_');
    disp.setmacro("textfailmsg", "depositor", textfailmsg);

    text_t bldlog = filename_cat(gsdlhome, "tmp", args["di1tmp"], args["di1dirname"] + ".bld");
    text_t rawlog = file_tail (bldlog, 6, 0);
    // we'll shove in some <br> tags where \n's occur
    text_t faillog;
    text_t::const_iterator here = rawlog.begin();
    text_t::const_iterator end = rawlog.end();
    while (here != end) {
      if (*here == '\n') faillog += "<br>";
      faillog.push_back (*here);
      ++here;
    }
    disp.setmacro ("faillog", "depositor", dm_safe(faillog));
  }
}


//basic framework
bool depositoraction::do_action (cgiargsclass &args, recptprotolistclass * /*protos*/, 
                 browsermapclass * /*browsers*/, displayclass &disp, 
                 outconvertclass &outconvert, ostream &textout, 
                 ostream &logout) {
  // make sure the depositor is enabled
  if (disabled) {
    textout << outconvert 
        << "<html>\n"
        << "<head>\n"
        << "<title>Depositor disabled</title>\n"
        << "</head>\n"
        << "<body bgcolor=\"#ffffff\" text=\"#000000\" link=\"#006666\" "
        << "alink=\"#cc9900\" vlink=\"#666633\">\n"
        << "<h2>Facility disabled</h2>\n" 
        << "Sorry, the Depositor end-user collecation update facility is currently disabled\n"
        << "\n</body>\n"
        << "</html>\n";
    return true;
  }

  text_t &depositor_page = args["p"];
  text_t &collection = args["di1dirname"];

  // make sure we have perl (we won't bother with this check for the 
  // building status pages to avoid slowing things down unneccessarily)
  if (depositor_page != "bildstatus" && depositor_page != "bildframe1" && !perl_ok(logout)) {
    textout << outconvert 
        << "<html>\n"
        << "<head>\n"
        << "<title>Perl not found</title>\n"
        << "</head>\n"
        << "<body bgcolor=\"#ffffff\" text=\"#000000\" link=\"#006666\" "
        << "alink=\"#cc9900\" vlink=\"#666633\">\n"
        << "<h2>Perl not found</h2>\n" 
        << "Greenstone could not detect perl on this system. It is therefore not\n"
        << "possible to build a Greenstone collection, either from the Collector or the \n"
        << "command-line tools, or to use the Collector for any other task.\n"
        << "<p>Please refer to the Greenstone Installer's Guide for details on\n"
        << "installing perl on your system.\n"
        << "\n</body>\n"
        << "</html>\n";
    return true;

  }

  text_t::const_iterator here = depositor_page.begin();
  text_t::const_iterator end = depositor_page.end();
  text_t stepstring = substr(here,here+4);

  if ((depositor_page == "select") || (stepstring == "step")) {
          textout << outconvert << disp << ("_depositor:header_\n")
          << ("_depositor:" + depositor_page + "content_\n")
          << ("_depositor:footer_\n");
      
  }

  if ((depositor_page == "bild") || (depositor_page == "depositoronly")) {

    text_t filename_textt = args["di1userfile"];
    text_t timestamp_str = args["di1timestamp"];
    //check to make sure a file was uploaded
    //if more than one upload occurred, the last one is taken
    if(filename_textt == "") {
      textout << outconvert << disp << "<p> no file available</p>\n"; 
    } else {
    
      text_t col_dirname = filename_cat(collecthome,args[macro_prefix+"dirname"]);
      text_t import_dirname = filename_cat(col_dirname,"import");
      if(!directory_exists(import_dirname)) {
    bool flag = mk_dir(import_dirname);
    if(!flag) {
      cerr << "Error: unable to make directory " << import_dirname << endl;
      return true; 
    }
      } 

      text_t dirname = filename_cat(import_dirname,timestamp_str);
      bool flag = mk_dir(dirname);
      if(!flag) {
    cerr << "Error: unable to make timestamp directory " << dirname << endl;
    return true; 
      }

      text_t filename_textt = args["di1userfile"]; 
      text_t tmpdir = filename_cat(gsdlhome,"tmp",args["di1tmp"],timestamp_str);
      text_t tmpfile = filename_cat(tmpdir,filename_textt);
      text_t filename = filename_cat(dirname, filename_textt);  
      if(!file_copy(tmpfile, filename)) {
    cerr << "Unable to copy " << tmpfile << " to " << filename << endl; 
      }
      
      //write the metadata file
      write_metadata_file(args, filename_textt, timestamp_str); 

      if(depositor_page == "bild"){

    //create a manifest file 
    write_manifest_file(args, filename_textt, timestamp_str);
    
    // do the work (download, import, build) 
    gsdl_build (args, logout);

    if (message.empty()) {
      // bild page is a frameset so we don't want headers and stuff
      textout << outconvert << disp << ("_depositor:bildcontent_\n");
    }
      }
    }
  }

  if (message.empty()) {

    if (depositor_page != "bild" && stepstring != "step" && depositor_page != "select") {
      // output page ("bild" page was already output above)
      textout << outconvert << disp << ("_depositor:header_\n")
          << ("_depositor:" + depositor_page + "content_\n")
          << ("_depositor:footer_\n");
    }
  } else {
    // message was set somewhere (probably an error), output message page
    textout << outconvert << disp << ("_depositor:header_\n")
        << ("_depositor:" + message + "content_\n")
        << ("_depositor:footer_\n");
    message.clear();
  }
 
  return true;

}


//This function creates a metadata.xml file
void depositoraction::write_metadata_file(cgiargsclass &args, text_t filename_str, text_t& timestamp_str)
{

    //build metadata file
    //the front
    text_t metadata_file = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n";
    metadata_file += "<!DOCTYPE DirectoryMetadata SYSTEM \"http://greenstone.org/dtd/DirectoryMetadata/1.0/DirectoryMetadata.dtd\">\n"; 
    metadata_file += "<DirectoryMetadata>\n";
    metadata_file += "    <FileSet>\n";
    metadata_file += "        <FileName>";

    // Generate 'regular expression' save version of filename
    // for now that means escaping any '.' characters
    // consider generalising as function in gsdltools.h/cpp?

    text_t filename_re;
    text_t::const_iterator here = filename_str.begin();
    text_t::const_iterator end = filename_str.end();
    while (here != end) {
      if (*here == '.') {
    filename_re.push_back('\\');
      }

      filename_re.push_back(*here);
      ++here;
    }

    metadata_file += filename_re;

    metadata_file += "</FileName>\n"; 
    metadata_file += "        <Description>\n";

    
    cgiargsclass::const_iterator args_here = args.begin();
    cgiargsclass::const_iterator args_end = args.end();

    while (args_here != args_end) {
      text_t args_name = (*args_here).first;

      int prefix_len = macro_prefix.size();
      
      text_t args_prefix = substr(args_name.begin(),args_name.begin()+prefix_len+3);
      
      if (args_prefix == (macro_prefix+"md.")) {     
        text_t args_val = args[args_name];

    text_t args_suffix = substr(args_name.begin()+prefix_len+3,args_name.end()); 

    text_tarray mdvalues;
    splitchar (args_val.begin(), args_val.end(), ',', mdvalues);
    int numvalues = mdvalues.size();

    for (int i = 0; i < numvalues; ++i) {
      if (!mdvalues[i].empty()) {

        decode_cgi_arg(mdvalues[i]);

        metadata_file += "            <Metadata mode=\"accumulate\" name=\"";       
        metadata_file += args_suffix;
        metadata_file += "\">";
        metadata_file += mdvalues[i];
        metadata_file += "</Metadata>\n";

      }
    }
      }       

      ++args_here;
    }
    
    //the end of the file
    metadata_file += "        </Description>\n"; 
    metadata_file += "    </FileSet>\n"; 
    metadata_file += "</DirectoryMetadata>\n"; 

    //create metadata.xml file
    text_t metadata_path = filename_cat(collecthome, args[macro_prefix+"dirname"], "import", timestamp_str, "metadata.xml");
    text_t my_path = filename_cat(gsdlhome,"tmp", "metadata.xml");

    ofstream metadata(metadata_path.getcstr());
    ofstream my_tmp(my_path.getcstr()); 

    if(!metadata.is_open()) {
      cerr << "Cannot open metadata.xml!" << endl; 
    } else {

      //write metadata.xml
      metadata.write(metadata_file.getcstr(), metadata_file.size()); 
      my_tmp.write(metadata_file.getcstr(), metadata_file.size()); 
    }
}

//This function creates a manifest.xml file
void depositoraction::write_manifest_file(cgiargsclass &args, text_t filename, 
                      text_t& timestamp_str)
{

    //build manifest file

    //the front
    text_t manifest_file = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n";
    manifest_file += "<Manifest>\n";
    manifest_file += "    <Index>\n";
    manifest_file += "        <Filename>\n";
    manifest_file += "          " + timestamp_str + "\n";
    manifest_file += "        </Filename>\n"; 
    
    //the end of the file
    manifest_file += "    </Index>\n"; 
    manifest_file += "</Manifest>\n"; 

    //create manifest.xml file
    text_t manifest_path = filename_cat(collecthome, args[macro_prefix+"dirname"], "manifest.xml");

    char* manifest_cstr = manifest_path.getcstr();

    ofstream manifest(manifest_cstr);

    if(!manifest.is_open()) {
      cerr << "Cannot open" << manifest_cstr << endl; 
    } else {

      //write manifest.xml
      char *manifest_file_cstr = manifest_file.getcstr();
      manifest.write(manifest_file_cstr, manifest_file.size()); 
      delete [] manifest_file_cstr;
    }

    delete [] manifest_cstr;
}



text_t depositoraction::get_button(cgiargsclass &args, const text_t &thispage, 
                   const text_t &color, 
                   const text_t &type, bool enabled) 
{

  text_t::const_iterator here = type.begin();
  text_t::const_iterator end = type.end();
  text_t stepstring = substr(here,here+4);
  if ((color != "green" && color != "grey" && color != "yellow") ||
      (type != "select" && type != "laststep" && stepstring != "step" && type != "view"))
    return g_EmptyText;

  text_t href = "_http"+type+"_";
  text_t target = "";

  here = thispage.begin();
  stepstring = substr(here,here+4);  
  if (thispage == "bildcancel" || thispage == "bildfail" || thispage == "select"|| stepstring == "step") {
    // call the check submit macro instead of linking directly to the page

    if(type == "laststep") {
      href="\"javascript:check_submit('_"+type+"_');\"";
    } else {
      href="\"javascript:check_submit('"+type+"');\"";
    }

  } else if (type == "view") {
   //target = " target=_top";
    target = " target=_blank";
  }

  text_t tdclass = "wizardbar"+color; 
  if (enabled) {
    // link to the appropriate page
    return "<td class="+tdclass+"><a href="+href+target+">_text"+type+"_</a></td>";
  }
  else {
    // just display the text
    return "<td class="+tdclass+">_text"+type+"_</td>";
  }
}


#endif //GSDL_USE_DEPOSITOR_ACTION