WebUtil.qm.dox.h
// -*- mode: c++; indent-tabs-mode: nil -*-
// @file WebUtil.qm Qore user module supprting web server operations
/* WebUtil.qm Copyright (C) 2013 - 2017 Qore Technologies, s.r.o.
Permission is hereby granted, free of charge, to any person obtaining a
copy of this software and associated documentation files (the "Software"),
to deal in the Software without restriction, including without limitation
the rights to use, copy, modify, merge, publish, distribute, sublicense,
and/or sell copies of the Software, and to permit persons to whom the
Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
DEALINGS IN THE SOFTWARE.
*/
// this module requires Qore 0.8.13 or better
// require type definitions everywhere
// enable all warnings
// do not use "$" signs, assume local vars
namespace WebUtil {
class FileStreamRequest : public HttpServer::AbstractStreamRequest {
public:
private:
public:
private :
ReadOnlyFile f;
bool txt;
string ct;
int cs;
public:
constructor(HttpServer::HttpListenerInterface listener, HttpServer::AbstractHttpRequestHandler handler, Qore::Socket s, hash cx, hash hdr, *data body, Qore::ReadOnlyFile file, bool textflag, string content_type, int chunk_size) ;
private:
hash getResponseHeaderMessageImpl();
public:
private:
auto sendImpl();
public:
};
class TextTemplateBase {
public:
private :
Program p;
public:
public :
const DefaultProgramOptions = PO_REQUIRE_OUR|PO_NO_TOP_LEVEL_STATEMENTS|PO_NO_INHERIT_USER_FUNC_VARIANTS|PO_NO_INHERIT_GLOBAL_VARS|PO_NO_USER_CLASSES|PO_NO_TERMINAL_IO;
public:
constructor(int po = DefaultProgramOptions);
static string add(Qore::Program p, string fn, string name, string src);
private:
static string getCode(bool bare_refs, string fmt);
public:
private:
static bool doBlock(string end, reference<string> src, string type, reference<int> i, reference<list<hash>> l);
public:
static string getContentType(string name);
};
class FileTemplate : public TextTemplateBase {
public:
private :
int po;
string path;
string ct;
const TemplateFunc = "t";
*code psetup;
RWLock rwl();
*date mtime;
public:
public :
public:
constructor(string resource_path, int parse_opts = DefaultProgramOptions, *code pgm_setup) ;
hash render(date new_mtime, hash ctx, int code = 200, *hash hdr);
private:
setupTemplateIntern(date new_mtime);
public:
};
class TemplateFileManager {
public:
private :
RWLock rwl();
hash th;
int po;
*code psetup;
public:
constructor(int parse_opts = TextTemplateBase::DefaultProgramOptions, *code pgm_setup);
hash render(string tname, string path, date mtime, hash ctx, int code = 200, *hash hdr);
purge(string tname);
};
class StaticTemplateManager : public WebUtil::TextTemplateBase {
public:
private :
hash th;
Sequence seq();
public:
constructor(int po = DefaultProgramOptions) ;
string add(string name, string src, *string ct);
bool hasTemplate(string tname);
hash render(string tname, hash ctx, int code = 200, *hash hdr);
*hash tryRender(string tname, hash ctx, int code = 200, *hash hdr);
*hash getTemplateHash();
list getTemplateList();
};
class FileHandler : public HttpServer::AbstractUrlHandler, private WebUtil::TemplateFileManager {
public:
public :
string file_root;
softlist indexes = (Defaults.IndexTemplate, Defaults.IndexFile);
hash template_extensions = Defaults.TemplateExtensions;
*string default_target;
softint chunked_threshold = Defaults.ChunkedThreshold;
softint chunk_size = Defaults.ChunkSize;
softint error_level = 0;
const Unix = (PlatformOS != "Windows");
const DirSep = Qore::DirSep;
const Defaults = (
// default index file
"IndexFile": "index.html",
"IndexTemplate": "index.qhtml",
"TemplateExtensions": (
"qhtml": True,
),
"ChunkedThreshold": 10 * 1024,
"ChunkSize": 4096,
);
const Dirlisting = "<html lang=\"en\" >"
"{%"
" Dir $d();"
" $d.chdir($ctx.path);"
" string $title = sprintf(\"Index of /%s\", $ctx.resource_path);"
"%}"
" <head>"
" <meta charset=\"utf-8\" />"
" <title>{{ $title }}</title>"
" </head>"
" <body>"
" <header>"
" <h1>{{ $title }}</h1>"
" </header>"
" <div class=\"container\">"
" <table>"
" <tr>"
" <th>Name</th>"
" <th width=\"40\">Type</th>"
" <th width=\"80\">Size</th>"
" </tr>"
" {% if ($ctx.parent_url) { %}"
" <tr>"
" <td colspan=\"2\"><a href=\"{{ $ctx.parent_url }}\">Parent Directory</a></td>"
" </tr>"
" {% } %}"
" {% foreach string $dir in (sort($d.listDirs())) { %}"
" {% if ($dir[0]!=\".\") {"
" string $path = replace($ctx.path, $ctx.file_root, \"\");"
" %}"
" <tr><td><a href=\"{{ $ctx.url_root + $path + \"/\" + $dir }}\">{{ $dir }}</a></td><td width=\"40\">Directory</td></tr>"
" {% } %}"
" {% } %}"
" {% foreach string $file in (sort($d.listFiles())) { %}"
" {% if ($file[0]!=\".\") {"
" string $path = replace($ctx.path, $ctx.file_root, \"\");"
" %}"
" <tr><td><a href=\"{{ $ctx.url_root + $path + \"/\" + $file }}\">{{ $file }}</a></td><td width=\"40\">File</td><td align=\"right\">{{hstat($ctx.path + \"/\" + $file).size }}</td></tr>"
" {% } %}"
" {% } %}"
" </table>"
" </div>"
" </body>"
"</html>";
public:
private :
StaticTemplateManager stm();
public:
constructor(string new_file_root, string url_root = "/", *hash opt) ;
private:
string getDirlistingTemplate();
public:
hash handleRequest(HttpServer::HttpListenerInterface listener, Qore::Socket s, hash cx, hash hdr, *data body);
logInfo(string fmt);
logError(string fmt);
logDebug(string fmt);
private:
hash unhandledRequest(hash cx, hash hdr, *data body);
public:
private:
hash fileError(hash cx, hash sh);
public:
private:
hash serverError(hash cx, hash ex);
public:
private:
*hash tryServeRequest(HttpServer::HttpListenerInterface listener, Qore::Socket s, hash cx, hash hdr, *data body);
public:
private:
FileStreamRequest getFileStreamRequestImpl(HttpServer::HttpListenerInterface listener, Qore::Socket s, hash cx, hash hdr, *data body, Qore::ReadOnlyFile f, bool txt, string ct);
public:
private:
hash sendFile(ReadOnlyFile f, bool txt, string ct);
public:
private:
hash sendFileChunked(HttpServer::HttpListenerInterface listener, Qore::Socket s, hash cx, hash hdr, *data body, Qore::ReadOnlyFile f, bool txt, string ct);
public:
*hash renderDirectory(hash cx, string path);
private:
*hash handleRequestImpl(reference<hash> cx, hash hdr, *data body);
public:
};
};
PO_NO_USER_CLASSES
const PO_NO_USER_CLASSES
date
date date(date dt)
WebUtil::FileTemplate::mtime
*date mtime
file&#39;s modification time
Definition: WebUtil.qm.dox.h:206
WebUtil::FileTemplate
manages a template resource that may need to be recompiled if the file is updated in the filesystem; ...
Definition: WebUtil.qm.dox.h:183
WebUtil::TemplateFileManager::th
hash th
hash for template storage
Definition: WebUtil.qm.dox.h:260
HttpServer::AbstractStreamRequest::hdr
hash hdr
WebUtil::FileTemplate::psetup
*code psetup
code to perform Program initialization when creating a new Program object (inport API...
Definition: WebUtil.qm.dox.h:200
HttpServer::AbstractStreamRequest
WebUtil::FileStreamRequest::ct
string ct
Content-Type.
Definition: WebUtil.qm.dox.h:90
WebUtil::FileTemplate::ct
string ct
the content type of the rendered template
Definition: WebUtil.qm.dox.h:194
Qore::Program
HttpServer::AbstractHttpRequestHandler
Qore::Socket
WebUtil::FileTemplate::po
int po
parse options used on the program
Definition: WebUtil.qm.dox.h:188
WebUtil::FileStreamRequest::getResponseHeaderMessageImpl
hash getResponseHeaderMessageImpl()
returns the reponse headers
WebUtil::FileStreamRequest::f
ReadOnlyFile f
file object
Definition: WebUtil.qm.dox.h:86
True
const True
HttpServer::HttpListenerInterface
WebUtil::TextTemplateBase
this is the base class for all template Program container classes
Definition: WebUtil.qm.dox.h:116
WebUtil::TemplateFileManager
this class manages templates based on files
Definition: WebUtil.qm.dox.h:252
HttpServer::AbstractStreamRequest::handler
AbstractHttpRequestHandler handler
WebUtil::FileHandler::default_target
*string default_target
the default target if a URL cannot be satisfied
Definition: WebUtil.qm.dox.h:423
PO_REQUIRE_OUR
const PO_REQUIRE_OUR
list
list list(...)
PO_NO_INHERIT_GLOBAL_VARS
const PO_NO_INHERIT_GLOBAL_VARS
WebUtil::FileStreamRequest::txt
bool txt
text flag
Definition: WebUtil.qm.dox.h:88
HttpServer::AbstractStreamRequest::cx
hash cx
HttpServer::AbstractStreamRequest::s
Socket s
WebUtil::FileHandler
this class serves files from the file system based on a root location
Definition: WebUtil.qm.dox.h:409
WebUtil::TemplateFileManager::psetup
*code psetup
code to perform Program initialization when creating a new Program object (inport API...
Definition: WebUtil.qm.dox.h:266
WebUtil::TemplateFileManager::po
int po
parse options used on the program
Definition: WebUtil.qm.dox.h:263
DirSep
const DirSep
WebUtil::StaticTemplateManager
A container for holding static text templates (ie that do not change once created in the template man...
Definition: WebUtil.qm.dox.h:310
WebUtil::FileStreamRequest::sendImpl
auto sendImpl()
returns data to send
HttpServer::AbstractStreamRequest::listener
HttpListenerInterface listener
HttpServer::AbstractStreamRequest::handleRequest
hash< HttpHandlerResponseInfo > handleRequest()
PO_NO_INHERIT_USER_FUNC_VARIANTS
const PO_NO_INHERIT_USER_FUNC_VARIANTS
WebUtil::FileTemplate::path
string path
the path to the template
Definition: WebUtil.qm.dox.h:191
type
string type(auto arg)
HttpServer::AbstractStreamRequest::body
auto body
WebUtil::FileStreamRequest
this class handles chunked file sends
Definition: WebUtil.qm.dox.h:77
HttpServer::AbstractUrlHandler
WebUtil::FileHandler::file_root
string file_root
root directory for serving files
Definition: WebUtil.qm.dox.h:414
WebUtil::TextTemplateBase::p
Program p
Holds the template generation function.
Definition: WebUtil.qm.dox.h:121
WebUtil::TextTemplateBase::DefaultProgramOptions
const DefaultProgramOptions
default parse options for template Programs
Definition: WebUtil.qm.dox.h:127
PO_NO_TOP_LEVEL_STATEMENTS
const PO_NO_TOP_LEVEL_STATEMENTS
PlatformOS
const PlatformOS
WebUtil::StaticTemplateManager::th
hash th
Maps template names to function names.
Definition: WebUtil.qm.dox.h:315
hash
hash hash(object obj)
Qore::ReadOnlyFile
WebUtil::FileStreamRequest::constructor
constructor(HttpServer::HttpListenerInterface listener, HttpServer::AbstractHttpRequestHandler handler, Qore::Socket s, hash cx, hash hdr, *data body, Qore::ReadOnlyFile file, bool textflag, string content_type, int chunk_size)
creates the object
PO_NO_TERMINAL_IO
const PO_NO_TERMINAL_IO
WebUtil
the WebUtil namespace contains all the objects in the WebUtil module
Definition: WebUtil.qm.dox.h:75
WebUtil::FileStreamRequest::cs
int cs
chunk size
Definition: WebUtil.qm.dox.h:92