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version 1.50, 2001/03/13 17:54:13
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version 1.160.2.37.2.7, 2003/03/24 09:39:55
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| /* |
/** @file |
| Parser |
Parser: request class decl. |
| Copyright (c) 2001 ArtLebedev Group (http://www.artlebedev.com) |
|
| Author: Alexander Petrosyan <paf@design.ru> (http://design.ru/paf) |
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| |
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| $Id$ |
Copyright (c) 2001-2003 ArtLebedev Group (http://www.artlebedev.com) |
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Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru) |
| */ |
*/ |
| |
|
| #ifndef PA_REQUEST_H |
#ifndef PA_REQUEST_H |
| #define PA_REQUEST_H |
#define PA_REQUEST_H |
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|
| #include "pa_pool.h" |
static const char* IDENT_REQUEST_H="$Date$"; |
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|
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#include "pa_request_info.h" |
| #include "pa_hash.h" |
#include "pa_hash.h" |
| #include "pa_wcontext.h" |
#include "pa_wcontext.h" |
| #include "pa_value.h" |
#include "pa_value.h" |
| #include "pa_stack.h" |
#include "pa_stack.h" |
| #include "pa_vclass.h" |
#include "pa_request_info.h" |
| #include "pa_vobject.h" |
#include "pa_request_charsets.h" |
| #include "pa_venv.h" |
#include "pa_sapi.h" |
| #include "pa_vform.h" |
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| |
|
| #ifndef NO_STRING_ORIGIN |
#ifdef RESOURCES_DEBUG |
| # define COMPILE_PARAMS \ |
#include <sys/resource.h> |
| const char *source, \ |
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| VStateless_class *aclass, const String *name, \ |
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| VStateless_class *base_class, \ |
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| const char *file |
|
| # define COMPILE(source, aclass, name, base_class, file) \ |
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| real_compile(source, aclass, name, base_class, file) |
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| #else |
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| # define COMPILE_PARAMS \ |
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| const char *source, \ |
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| VStateless_class *aclass, const String *name, \ |
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| VStateless_class *base_class |
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| # define COMPILE(source, aclass, name, base_class, file) \ |
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| real_compile(source, aclass, name, base_class) |
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| #endif |
#endif |
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|
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// consts |
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const uint ANTI_ENDLESS_EXECUTE_RECOURSION=1000; |
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|
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// forwards |
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|
| class Temp_lang; |
class Temp_lang; |
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class Methoded; |
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class VMethodFrame; |
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class GdomeDOMString_auto_ptr; |
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class VMail; DECLARE_OBJECT_PTR(VMail); |
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class VForm; DECLARE_OBJECT_PTR(VForm); |
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class VResponse; DECLARE_OBJECT_PTR(VResponse); |
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class VCookie; DECLARE_OBJECT_PTR(VCookie); |
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class VStateless_class; DECLARE_OBJECT_PTR(VStateless_class); |
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|
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/// Main workhorse. |
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class Request: public PA_Object { |
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friend class Temp_lang; |
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friend class Temp_connection; |
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friend class Request_context_saver; |
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friend class Temp_request_self; |
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|
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///@{ core data |
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/// classes |
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HashStringValue fclasses; |
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/// already used files to avoid cyclic uses |
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Hash<const StringBody&, bool> used_files; |
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|
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/** endless execute(execute(... preventing counter |
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@see ANTI_ENDLESS_EXECUTE_RECOURSION |
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*/ |
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uint anti_endless_execute_recoursion; |
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///@} |
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public: |
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union StackItem { |
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const String* string() const { return value->get_string(); } |
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Value* value; |
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ArrayOperation* ops; |
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VMethodFrame* method_frame; |
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|
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/// needed to fill unused Array entries |
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StackItem() {} |
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StackItem(Value* avalue): value(avalue) {} |
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StackItem(ArrayOperation* aops): ops(aops) {} |
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StackItem(VMethodFrame* amethod_frame): method_frame(amethod_frame) {} |
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}; |
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|
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//@{ request processing status |
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/// exception stack trace |
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//Stack<String*> exception_trace; |
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/// execution stack |
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Stack<StackItem> stack; |
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/// contexts |
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VMethodFrame* method_frame; |
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Value* rcontext; |
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WContext* wcontext; |
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/// current language |
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String::Language flang; |
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/// current connection |
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SQL_Connection* fconnection; |
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//@} |
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/// interrupted flag, raised on signals [SIGPIPE] |
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bool finterrupted; |
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|
| class Request : public Pooled { |
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| friend Temp_lang; |
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| public: |
public: |
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| Request(Pool& apool, |
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| String::Untaint_lang alang, |
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|
| char *adocument_root, |
#ifdef RESOURCES_DEBUG |
| char *apage_filespec |
/// measures |
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double sql_connect_time; |
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double sql_request_time; |
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#endif |
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Request(SAPI_Info& asapi_info, Request_info& arequest_info, |
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String::Language adefault_lang, ///< all tainted data default untainting lang |
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bool status_allowed ///< status class allowed |
| ); |
); |
| ~Request() {} |
~Request(); |
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|
| // global classes |
/// global classes |
| Hash& classes() { return fclasses; } |
HashStringValue& classes() { return fclasses; } |
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|
| // core request processing |
/** |
| char *core(bool& error); |
core request processing |
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| void execute(const Array& ops); |
BEWARE: may throw exception to you: catch it! |
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*/ |
| VStateless_class *use_file( |
void core( |
| const char *file, bool fail_on_read_problem=true, |
const char* config_filespec, ///< system config filespec |
| const String *name=0, |
bool config_fail_on_read_problem, ///< fail if system config file not found |
| VStateless_class *base_class=0); // core.C |
bool header_only); |
| VStateless_class *use_buf( |
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| const char *source, const char *file, |
/// executes ops |
| VStateless_class *aclass=0, const String *name=0, |
void execute(ArrayOperation& ops); // execute.C |
| VStateless_class *base_class=0); // core.C |
/// execute ops with anti-recoursion check |
| Value& process( |
void recoursion_checked_execute(/*const String& name, */ArrayOperation& ops) { |
| Value& value, |
// anti_endless_execute_recoursion |
| const String *name=0, |
if(++anti_endless_execute_recoursion==ANTI_ENDLESS_EXECUTE_RECOURSION) { |
| bool intercept_string=true); // execute.C |
anti_endless_execute_recoursion=0; // give @exception a chance |
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throw Exception("parser.runtime", |
| void write(const String& astring) { |
0, //&name, |
| wcontext->write(astring, String::Untaint_lang::NO); // write(const) = clean |
"call canceled - endless recursion detected"); |
| } |
} |
| void write_no_lang(String& astring) { |
execute(ops); // execute it |
| // appending, sure of clean string inside |
anti_endless_execute_recoursion--; |
| wcontext->write(astring, String::Untaint_lang::NO); |
|
| } |
} |
| |
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| void write_assign_lang(Value& avalue) { |
/// compiles the file, maybe forcing it's class @a name and @a base_class. |
| // appending possible string, assigning untaint language |
void use_file(VStateless_class& aclass, |
| wcontext->write(avalue, flang); |
const String& file_name, |
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bool ignore_class_path=false, |
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bool fail_on_read_problem=true, bool fail_on_file_absence=true); // pa_request.C |
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/// compiles a @a source buffer |
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void use_buf(VStateless_class& aclass, |
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const char* source, |
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const String& filespec, const char* filespec_cstr); // pa_request.C |
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|
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/// processes any code-junction there may be inside of @a value |
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StringOrValue process(Value& input_value, bool intercept_string=true); // execute.C |
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//@{ convinient helpers |
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const String& process_to_string(Value& input_value) { |
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return process(input_value, true/*intercept_string*/).as_string(); |
| } |
} |
| void write_pass_lang(Value& avalue) { |
Value& process_to_value(Value& input_value, bool intercept_string=true) { |
| // appending possible string, passing language built into string being written |
return process(input_value, intercept_string).as_value(); |
| wcontext->write(avalue, String::Untaint_lang::PASS_APPENDED); |
} |
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//@} |
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#define DEFINE_DUAL(modification) \ |
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void write_##modification##_lang(StringOrValue dual) { \ |
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if(const String* string=dual.get_string()) \ |
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write_##modification##_lang(*string); \ |
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else \ |
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write_##modification##_lang(*dual.get_value()); \ |
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} |
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/// appending, sure of clean string inside |
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void write_no_lang(const String& astring) { |
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wcontext->write(astring, |
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(String::Language)(String::L_CLEAN | flang&String::L_OPTIMIZE_BIT)); |
| } |
} |
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/// appending sure value, that would be converted to clean string |
| void write_no_lang(Value& avalue) { |
void write_no_lang(Value& avalue) { |
| // appending sure value, no strings inside |
if(wcontext->get_in_expression()) |
| wcontext->write(avalue, String::Untaint_lang::NO); |
wcontext->write(avalue); |
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else |
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wcontext->write(avalue, |
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(String::Language)(String::L_CLEAN | flang&String::L_OPTIMIZE_BIT)); |
| } |
} |
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|
| void fail_if_junction_(bool is, Value& value, const String& method_name, char *msg); |
/// appending string, passing language built into string being written |
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void write_pass_lang(const String& astring) { |
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wcontext->write(astring, String::L_PASS_APPENDED); |
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} |
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/// appending possible string, passing language built into string being written |
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void write_pass_lang(Value& avalue) { |
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wcontext->write(avalue, String::L_PASS_APPENDED); |
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} |
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DEFINE_DUAL(pass) |
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|
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/// appending possible string, assigning untaint language |
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void write_assign_lang(Value& avalue) { |
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wcontext->write(avalue, flang); |
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} |
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/// appending string, assigning untaint language |
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void write_assign_lang(const String& astring) { |
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wcontext->write(astring, flang); |
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} |
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DEFINE_DUAL(assign) |
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/// returns relative to @a path path to @a file |
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const String& relative(const char* apath, const String& relative_name); |
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| char *relative(const char *path, const char *file); |
/// returns an absolute @a path to relative @a name |
| char *absolute(const char *name); |
const String& absolute(const String& relative_name); |
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|
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/// returns the mime type of 'user_file_name_cstr' |
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const String& mime_type_of(const char* user_file_name_cstr); |
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/// returns current SQL connection if any |
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SQL_Connection* connection(const String* source) { |
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if(!fconnection && source) |
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throw Exception("parser.runtime", |
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source, |
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"outside of 'connect' operator"); |
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return fconnection; |
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} |
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void set_interrupted(bool ainterrupted) { finterrupted=ainterrupted; } |
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bool get_interrupted() { return finterrupted; } |
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|
| public: |
public: |
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|
| // default base |
/// info from web server |
| VClass root_class; |
Request_info& request_info; |
| // $env:fields here |
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| VEnv env_class; |
|
| // $form:elements here |
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| VForm form_class; |
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| // contexts |
/// info about ServerAPI |
| Value *self, *root, *rcontext; |
SAPI_Info& sapi_info; |
| WContext *wcontext; |
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/// source, client, mail charsets |
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Request_charsets charsets; |
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/// 'MAIN' class conglomerat & operators are methods of this class |
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VStateless_class& main_class; |
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/// $form:elements |
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VForm& form; |
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/// $mail |
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VMail& mail; |
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/// $response:elements |
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VResponse& response; |
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/// $cookie:elements |
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VCookie& cookie; |
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|
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/// classes configured data |
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HashStringObject classes_conf; |
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public: // status read methods |
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VMethodFrame *get_method_frame() { return method_frame; } |
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Value& get_self(); |
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#define GET_SELF(request, type) (static_cast<type &>(request.get_self())) |
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/* for strange reason call to this: |
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r.get_self<VHash>() |
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refuses to compile |
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template<typename T> T& get_self() { |
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return *static_cast<T*>(get_self().get()); |
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} |
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*/ |
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#ifdef XML |
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public: // charset helpers |
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/// @see Charset::transcode |
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GdomeDOMString_auto_ptr transcode(const String& s); |
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/// @see Charset::transcode |
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const String& transcode(GdomeDOMString* s |
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#ifndef NO_STRING_ORIGIN |
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, const String& origin |
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#endif |
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); |
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/// @see Charset::transcode |
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const String& transcode(xmlChar* s |
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#ifndef NO_STRING_ORIGIN |
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, const String& origin |
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#endif |
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); |
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#endif |
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| private: // core data |
private: |
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| // classes |
/// already executed some @conf method |
| Hash fclasses; |
bool configure_admin_done; |
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| // execution stack |
void configure_admin(VStateless_class& conf_class); |
| Stack stack; |
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| private: // compile.C |
private: // compile.C |
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| VStateless_class& real_compile(COMPILE_PARAMS); |
VStateless_class& compile(VStateless_class* aclass, const char* source, const char* file); |
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| private: // execute.C |
private: // execute.C |
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| char *execute_method(Value& aself, const Method& method, bool return_cstr); |
/// for @postprocess[body] |
| char *execute_method(Value& aself, const String& method_name, bool return_cstr); |
const String& execute_method(VMethodFrame& amethodFrame, const Method& method); |
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//{ for @conf[filespec] and @auto[filespec] |
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const String* execute_method(Value& aself, |
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const Method& method, VString* optional_param, |
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bool do_return_string); |
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struct Execute_nonvirtual_method_result { |
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const String* string; |
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Method* method; |
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Execute_nonvirtual_method_result(): string(0), method(0) {} |
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}; |
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Execute_nonvirtual_method_result execute_nonvirtual_method(VStateless_class& aclass, |
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const String& method_name, VString* optional_param, |
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bool do_return_string); |
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//} |
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/// for @main[] |
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const String* execute_virtual_method(Value& aself, const String& method_name); |
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Value* get_element(bool can_call_operator); |
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| Value *get_element(); |
private: // defaults |
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| private: // lang&raw |
const String::Language fdefault_lang; |
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| String::Untaint_lang flang; |
private: // mime types |
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/// $MAIN:MIME-TYPES |
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Table *mime_types; |
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| private: // lang manipulation |
private: // lang manipulation |
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| String::Untaint_lang set_lang(String::Untaint_lang alang) { |
String::Language set_lang(String::Language alang) { |
| String::Untaint_lang result=flang; |
String::Language result=flang; |
| flang=alang; |
flang=alang; |
| return result; |
return result; |
| } |
} |
| void restore_lang(String::Untaint_lang alang) { |
void restore_lang(String::Language alang) { |
| flang=alang; |
flang=alang; |
| } |
} |
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| private: // web |
private: // connection manipulation |
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SQL_Connection* set_connection(SQL_Connection* aconnection) { |
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SQL_Connection* result=fconnection; |
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fconnection=aconnection; |
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return result; |
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} |
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void restore_connection(SQL_Connection* aconnection) { |
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fconnection=aconnection; |
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} |
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private: |
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|
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void output_result(VFile* body_file, bool header_only, bool as_attachment); |
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}; |
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| const char *fdocument_root; |
/// Auto-object used to save request context across ^try body |
| const char *fpage_filespec; |
class Request_context_saver { |
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Request& fr; |
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/// exception stack trace |
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int exception_trace; |
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/// execution stack |
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int stack; |
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/// contexts |
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VMethodFrame *method_frame; |
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Value *rcontext; |
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WContext *wcontext; |
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/// current language |
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String::Language flang; |
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/// current connection |
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SQL_Connection* fconnection; |
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|
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public: |
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Request_context_saver(Request& ar) : |
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//exception_trace(ar.exception_trace.top_index()), |
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stack(ar.stack.top_index()), |
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method_frame(ar.method_frame), |
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rcontext(ar.rcontext), |
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wcontext(ar.wcontext), |
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flang(ar.flang), |
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fconnection(ar.fconnection), |
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fr(ar) {} |
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void restore() { |
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//fr.exception_trace.top_index(exception_trace); |
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fr.stack.top_index(stack); |
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fr.method_frame=method_frame, fr.rcontext=rcontext; fr.wcontext=wcontext; |
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fr.flang=flang; |
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fr.fconnection=fconnection; |
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} |
| }; |
}; |
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|
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/// Auto-object used for temporary changing Request::flang. |
| class Temp_lang { |
class Temp_lang { |
| Request& frequest; |
Request& frequest; |
| String::Untaint_lang saved_lang; |
String::Language saved_lang; |
| public: |
public: |
| Temp_lang(Request& arequest, String::Untaint_lang alang) : |
Temp_lang(Request& arequest, String::Language alang) : |
| frequest(arequest), |
frequest(arequest), |
| saved_lang(arequest.set_lang(alang)) { |
saved_lang(arequest.set_lang(alang)) { |
| } |
} |
|
Line 164 public:
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Line 399 public:
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| } |
} |
| }; |
}; |
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|
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/// Auto-object used for temporary changing Request::fconnection. |
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class Temp_connection { |
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Request& frequest; |
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SQL_Connection* saved_connection; |
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public: |
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Temp_connection(Request& arequest, SQL_Connection* aconnection) : |
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frequest(arequest), |
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saved_connection(arequest.set_connection(aconnection)) { |
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} |
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~Temp_connection() { |
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frequest.restore_connection(saved_connection); |
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} |
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}; |
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|
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|
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// defines for externs |
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|
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#define CONTENT_DISPOSITION_NAME "content-disposition" |
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#define CONTENT_DISPOSITION_VALUE "attachment" |
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#define CONTENT_DISPOSITION_FILENAME_NAME "filename" |
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|
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// externs |
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|
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extern const String main_method_name; |
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extern const String auto_method_name; |
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extern const String body_name; |
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extern const String content_disposition_name; |
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extern const String content_disposition_value; |
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extern const String content_disposition_filename_name; |
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|
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// defines for statics |
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|
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#define MAIN_CLASS_NAME "MAIN" |
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#define AUTO_FILE_NAME "auto.p" |
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|
| #endif |
#endif |