📄 redirect.cpp
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/* * =========================================================================== * PRODUCTION $Log: redirect.cpp,v $ * PRODUCTION Revision 1000.1 2004/06/01 19:15:48 gouriano * PRODUCTION PRODUCTION: UPGRADED [GCC34_MSVC7] Dev-tree R1.6 * PRODUCTION * =========================================================================== *//* $Id: redirect.cpp,v 1000.1 2004/06/01 19:15:48 gouriano Exp $ * =========================================================================== * * PUBLIC DOMAIN NOTICE * National Center for Biotechnology Information * * This software/database is a "United States Government Work" under the * terms of the United States Copyright Act. It was written as part of * the author's official duties as a United States Government employee and * thus cannot be copyrighted. This software/database is freely available * to the public for use. The National Library of Medicine and the U.S. * Government have not placed any restriction on its use or reproduction. * * Although all reasonable efforts have been taken to ensure the accuracy * and reliability of the software and data, the NLM and the U.S. * Government do not and cannot warrant the performance or results that * may be obtained by using this software or data. The NLM and the U.S. * Government disclaim all warranties, express or implied, including * warranties of performance, merchantability or fitness for any particular * purpose. * * Please cite the author in any work or product based on this material. * * =========================================================================== * * Author: Vladimir Ivanov * * File Description: * Class CCgiRedirectApplication - framework to redirec CGI requests. */#include <ncbi_pch.hpp>#include <misc/cgi_redirect/redirect.hpp>#include <cgi/cgictx.hpp>BEGIN_NCBI_SCOPE////////////////////////////////////////////////////////////////////////////////// CCgiRedirectApplication//// Default page templateconst char* const kDefaultRedirectTemplate = "\<html><head><title><@_TITLE_@></title></head>\n \<body>\n \ <center>\n \ <h1><@_HEADER_@></h1>\n \ <h3><@_MESSAGE_@></h3>\n \ <p>This web page has moved. Please, update your bookmarks and links.</p>\n \ <p><a href=\"<@_URL_@>\">Go to the new page</a></p>.\n \ </center> \</body> \</html>";void CCgiRedirectApplication::Init(void){ CParent::Init(); const CNcbiRegistry& reg = GetConfig(); // Set page title and messages m_Page.AddTagMap("_TITLE_", new CHTMLText(reg.Get("Main","PageTitle"))); m_Page.AddTagMap("_HEADER_", new CHTMLText(reg.Get("Main","Header"))); m_Page.AddTagMap("_MESSAGE_",new CHTMLText(reg.Get("Main","Message"))); // Wait time before redirect (if used by template) m_Page.AddTagMap("_TIMER_", new CHTMLText(reg.Get("Main", "Timer"))); // Set page template. string template_name = reg.Get("Main", "Template"); if ( !template_name.empty() ) { m_Page.SetTemplateFile(template_name); } else { m_Page.SetTemplateBuffer(kDefaultRedirectTemplate, strlen(kDefaultRedirectTemplate)); }}bool s_FindEntryName(const string& name, list<string>& lst){ ITERATE(list<string>, i, lst) { if (*i == name) return true; } return false;}void s_AssignEntryValue(const string& name, const string& value, TCgiEntries& old_entries, TCgiEntries& new_entries){ SIZE_TYPE pos = 0; string s(value); while ( (pos = s.find("&{", pos)) != NPOS ) { SIZE_TYPE pos_end = s.find("}", pos + 2); if ( pos_end == NPOS ) { break; } string name = value.substr(pos + 2, pos_end - pos - 2); TCgiEntriesCI ci = old_entries.find(name); if (ci != old_entries.end()) { s.replace(pos, pos_end - pos + 1, URL_EncodeString((ci->second).GetValue())); } else { s.erase(pos, pos_end - pos + 1); } pos++; } s = URL_DecodeString(s); CCgiEntry entry(s); new_entries.insert(TCgiEntries::value_type(name, entry));}int CCgiRedirectApplication::ProcessRequest(CCgiContext& ctx){ const CNcbiRegistry& reg = ctx.GetConfig(); TCgiEntries new_entries; // Remap CGI entries. try { RemapEntries(ctx, new_entries); } catch (exception& e) { ERR_POST("Failed to remap CGI entries: " << e.what()); return 1; } // Gnerate URLs string base_url = reg.Get("Main", "BaseUrl"); m_Page.AddTagMap("_BASEURL_", new CHTMLText(base_url)); string url; ITERATE(TCgiEntries, i, new_entries) { if ( (i->first).empty() ) { continue; } if ( !url.empty() ) { url += '&'; } url += i->first; if ( !(i->second).empty() ) { url += '='; url += URL_EncodeString(i->second); } // Map each entry. m_Page.AddTagMap(i->first, new CHTMLText(i->second)); } m_Page.AddTagMap("_URL_", new CHTMLText(base_url + "?" + url)); // Compose and flush the resultant HTML page try { CCgiResponse& response = ctx.GetResponse(); response.WriteHeader(); m_Page.Print(response.out(), CNCBINode::eHTML); } catch (exception& e) { ERR_POST("Failed to compose/send HTML page: " << e.what()); return 1; } return 0;}TCgiEntries& CCgiRedirectApplication::RemapEntries(CCgiContext& ctx, TCgiEntries& new_entries){ const CCgiRequest& request = ctx.GetRequest(); TCgiEntries& entries = const_cast<TCgiEntries&>(request.GetEntries()); const CNcbiRegistry& reg = ctx.GetConfig(); // Substitute entries // Get list of entries to remove list<string> remove_entries; string str = reg.Get("Entries", "Remove"); NStr::Split(str, " ", remove_entries); // Get list of entries to clear list<string> clear_entries; str = reg.Get("Entries", "Clear"); NStr::Split(str, " ", clear_entries); // Get list of entries to add as empty list<string> add_empty_entries; str = reg.Get("Entries", "Add"); NStr::Split(str, " ", add_empty_entries); // Get substitutions for present entries list<string> change_entries; reg.EnumerateEntries("Change", &change_entries); // Get list of new entries to add list<string> add_value_entries; reg.EnumerateEntries("Add", &add_value_entries); // Create empty entry CCgiEntry empty_entry(kEmptyStr); ITERATE(TCgiEntries, i, entries) { // Check entries marked to remove. bool is_removed = false; if ( s_FindEntryName(i->first, remove_entries)) { is_removed = true; } // Replace entries marked to clear. if ( s_FindEntryName(i->first, clear_entries) ) { _TRACE("Add empty: " << i->first); new_entries.insert(TCgiEntries::value_type(i->first, empty_entry)); continue; } // Change entry as specified in the [Change] section. if ( s_FindEntryName(i->first, change_entries) ) { _TRACE("Change: " << i->first); str = reg.Get("Change", i->first); s_AssignEntryValue(i->first, str, entries, new_entries); continue; } // The entry was marked for deletion, do not add it. if ( is_removed ) { continue; } // Here we have entry, for which rules is not defined, /// so just copy it as is. new_entries.insert(*i); } // Add new empty entries. ITERATE(list<string>, i, add_empty_entries) { TCgiEntriesCI ci = entries.find(*i); if (ci == entries.end()) { new_entries.insert(TCgiEntries::value_type(*i, empty_entry)); } } // Add new values entries. ITERATE(list<string>, i, add_value_entries) { TCgiEntriesCI ci = entries.find(*i); if (ci == entries.end()) { str = reg.Get("Add", *i); s_AssignEntryValue(*i, str, entries, new_entries); } } return new_entries;}END_NCBI_SCOPE/* * =========================================================================== * $Log: redirect.cpp,v $ * Revision 1000.1 2004/06/01 19:15:48 gouriano * PRODUCTION: UPGRADED [GCC34_MSVC7] Dev-tree R1.6 * * Revision 1.6 2004/05/17 21:01:48 gorelenk * Added include of PCH ncbi_pch.hpp * * Revision 1.5 2004/03/19 16:10:42 ivanov * ProcessRequest(): use ctx.GetConfig() * * Revision 1.4 2004/02/17 16:21:38 ivanov * Changed method of using another variables from "&var" to "&{var}". * Also, all new string values in the registry file must be specified * in the URL-encoded format. * * Revision 1.3 2004/02/10 15:25:37 ivanov * Enclosed mapped tag names with undescores to avoid conflicts default tags * with names of automaticaly mapped entries. * * Revision 1.2 2004/02/10 13:31:44 ivanov * Added missed \n in the default template * * Revision 1.1 2004/02/09 19:32:34 ivanov * Initial revision * * =========================================================================== */⌨️ 快捷键说明
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