--- parser3/src/include/pa_request.h 2003/10/21 04:45:19 1.166 +++ parser3/src/include/pa_request.h 2016/11/29 14:32:32 1.243 @@ -1,15 +1,16 @@ /** @file Parser: request class decl. - Copyright (c) 2001-2003 ArtLebedev Group (http://www.artlebedev.com) + Copyright (c) 2001-2015 Art. Lebedev Studio (http://www.artlebedev.com) Author: Alexandr Petrosian (http://paf.design.ru) */ #ifndef PA_REQUEST_H #define PA_REQUEST_H -static const char* IDENT_REQUEST_H="$Date: 2003/10/21 04:45:19 $"; +#define IDENT_PA_REQUEST_H "$Id: pa_request.h,v 1.243 2016/11/29 14:32:32 moko Exp $" +#include "pa_pool.h" #include "pa_hash.h" #include "pa_wcontext.h" #include "pa_value.h" @@ -18,13 +19,8 @@ static const char* IDENT_REQUEST_H="$Dat #include "pa_request_charsets.h" #include "pa_sapi.h" -#ifdef RESOURCES_DEBUG -#include -#endif - // consts -const uint ANTI_ENDLESS_EXECUTE_RECOURSION=1000; const size_t pseudo_file_no__process=1; // forwards @@ -32,19 +28,23 @@ const size_t pseudo_file_no__process=1; class Temp_lang; class Methoded; class VMethodFrame; -class GdomeDOMString_auto_ptr; class VMail; class VForm; class VResponse; class VCookie; class VStateless_class; +class VConsole; + +extern int pa_execute_recoursion_limit; +extern int pa_loop_limit; /// Main workhorse. class Request: public PA_Object { friend class Temp_lang; friend class Temp_connection; - friend class Request_context_saver; friend class Temp_request_self; + friend class Temp_value_element; + friend class Request_context_saver; friend class Exception_trace; public: @@ -54,7 +54,6 @@ public: public: Trace(): fname(0) {} void clear() { fname=0; } - operator bool() const { return fname!=0; } Trace(const String* aname, const Operation::Origin aorigin): fname(aname), forigin(aorigin) {} @@ -63,6 +62,16 @@ public: const Operation::Origin origin() const { return forigin; } }; + enum Skip { + SKIP_NOTHING, + SKIP_BREAK, + SKIP_CONTINUE + }; + +private: + Pool fpool; +public: + Pool& pool() { return fpool; } private: union StackItem { @@ -72,16 +81,14 @@ private: public: Value& value() const { return *fvalue; } const String& string() const { - const String* result=fvalue->get_string(); - assert(result); - return *result; + return fvalue->as_string(); } ArrayOperation& ops() const { return *fops; } VMethodFrame& method_frame() const { return *fmethod_frame; } /// needed to fill unused Array entries StackItem() {} - StackItem(Value& avalue): fvalue(&avalue) {} + StackItem(Value& avalue): fvalue(&avalue) {} StackItem(ArrayOperation& aops): fops(&aops) {} StackItem(VMethodFrame& amethod_frame): fmethod_frame(&amethod_frame) {} }; @@ -96,30 +103,27 @@ private: element_type bottom_value() { return get(bottom_index()); } void clear() { - ftop=fbottom=0; + fused=fbottom=0; } bool is_empty() { - return ftop==fbottom; + return fused==fbottom; } - - const element_type extract_origin(const String*& problem_source); }; ///@{ core data /// classes - HashStringValue fclasses; + HashString fclasses; /// already used files to avoid cyclic uses - Hash used_files; + HashString used_files; + HashString searched_along_class_path; /// list of all used files, Operation::file_no = index to it Array file_list; - /** endless execute(execute(... preventing counter - @see ANTI_ENDLESS_EXECUTE_RECOURSION - */ - uint anti_endless_execute_recoursion; + /// endless execute(execute(... preventing counter + int anti_endless_execute_recoursion; ///@} @@ -130,33 +134,34 @@ private: Exception_trace exception_trace; public: + bool allow_class_replace; + //@{ request processing status /// contexts VMethodFrame* method_frame; Value* rcontext; WContext* wcontext; /// current language - String::Language flang; + String::Language flang; /// current connection SQL_Connection* fconnection; //@} /// interrupted flag, raised on signals [SIGPIPE] bool finterrupted; + Skip fskip; + int fin_cycle; public: - size_t register_file(String::Body file_spec); + uint register_file(String::Body file_spec); struct Exception_details { - const Trace trace; + const Operation::Origin origin; const String* problem_source; VHash& vhash; - - Exception_details( - const Trace atrace, - const String* aproblem_source, - VHash& avhash): trace(atrace), problem_source(aproblem_source), vhash(avhash) {} + Exception_details(const Operation::Origin aorigin, const String* aproblem_source, VHash& avhash): origin(aorigin), problem_source(aproblem_source), vhash(avhash) {} }; Exception_details get_details(const Exception& e); + const char* get_exception_cstr(const Exception& e, Exception_details& details); /// @see Stack::wipe_unused void wipe_unused_execution_stack() { @@ -170,105 +175,102 @@ public: #endif Request(SAPI_Info& asapi_info, Request_info& arequest_info, - String::Language adefault_lang, ///< all tainted data default untainting lang - bool status_allowed ///< status class allowed + String::Language adefault_lang ///< all tainted data default untainting lang ); ~Request(); /// global classes - HashStringValue& classes() { return fclasses; } + HashString& classes() { return fclasses; } + VStateless_class* get_class(const String& name); + void put_class(VStateless_class *aclass){ classes().put(aclass->type(), aclass); } /** core request processing - BEWARE: may throw exception to you: catch it! */ - void core( - const char* config_filespec, ///< system config filespec - bool config_fail_on_read_problem, ///< fail if system config file not found - bool header_only); + void core(const char* config_filespec, bool config_fail_on_read_problem, bool header_only); /// executes ops void execute(ArrayOperation& ops); // execute.C + + template void call(Frame& frame){ + VMethodFrame *saved_method_frame=method_frame; + Value* saved_rcontext=rcontext; + WContext *saved_wcontext=wcontext; + + rcontext=wcontext=method_frame=&frame; + + frame.call(*this); + + wcontext=saved_wcontext; + rcontext=saved_rcontext; + method_frame=saved_method_frame; + } + + template void call_write(Frame& frame){ + VMethodFrame *saved_method_frame=method_frame; + Value* saved_rcontext=rcontext; + + rcontext=method_frame=&frame; + + frame.call(*this); + + rcontext=saved_rcontext; + method_frame=saved_method_frame; + } + + Value& construct(VStateless_class &class_value, const Method &method); + /// execute ops with anti-recoursion check - void recoursion_checked_execute(/*const String& name, */ArrayOperation& ops) { - // anti_endless_execute_recoursion - if(++anti_endless_execute_recoursion==ANTI_ENDLESS_EXECUTE_RECOURSION) { + void recoursion_checked_execute(ArrayOperation& ops) { + if(++anti_endless_execute_recoursion==pa_execute_recoursion_limit) { anti_endless_execute_recoursion=0; // give @exception a chance - throw Exception("parser.runtime", - 0, //&name, - "call canceled - endless recursion detected"); + throw Exception(PARSER_RUNTIME, 0, "call canceled - endless recursion detected"); } execute(ops); // execute it anti_endless_execute_recoursion--; } + /// + void use_file_directly(VStateless_class& aclass, const String& file_spec, bool fail_on_read_problem=true, bool fail_on_file_absence=true); + /// compiles the file, maybe forcing it's class @a name and @a base_class. - void use_file(VStateless_class& aclass, - const String& file_name, - const String* main_alias=0, - bool ignore_class_path=false, - bool fail_on_read_problem=true, - bool fail_on_file_absence=true); // pa_request.C + void use_file(VStateless_class& aclass, const String& file_name, const String* use_filespec); + + /// for @USE only, calls ^use (which may be user-defined) + void use_file(const String& file_name, const String* use_filespec, Operation::Origin origin); + /// compiles a @a source buffer - void use_buf(VStateless_class& aclass, - const char* source, - const String* main_alias, - uint file_no); // pa_request.C + void use_buf(VStateless_class& aclass, const char* source, const String* main_alias, uint file_no, int line_no_offset=0); /// processes any code-junction there may be inside of @a value - StringOrValue process(Value& input_value, bool intercept_string=true); // execute.C + Value& process_getter(Junction& junction); // execute.C + Value& process(Value& input_value); // execute.C + void process_write(Value& input_value); // execute.C + //@{ convinient helpers const String& process_to_string(Value& input_value) { - return process(input_value, true/*intercept_string*/).as_string(); - } - Value& process_to_value(Value& input_value, bool intercept_string=true) { - return process(input_value, intercept_string).as_value(); + return process(input_value).as_string(); } //@} - + const String* get_method_filespec(const Method* method); // execute.C + const String* get_used_filespec(uint file_no); -#define DEFINE_DUAL(modification) \ - void write_##modification##_lang(StringOrValue dual) { \ - if(const String* string=dual.get_string()) \ - write_##modification##_lang(*string); \ - else \ - write_##modification##_lang(*dual.get_value()); \ - } - - /// appending, sure of clean string inside - void write_no_lang(const String& astring) { - wcontext->write(astring, - (String::Language)(String::L_CLEAN | flang&String::L_OPTIMIZE_BIT)); - } - /// appending sure value, that would be converted to clean string - void write_no_lang(Value& avalue) { - if(wcontext->get_in_expression()) - wcontext->write(avalue); - else - wcontext->write(avalue, - (String::Language)(String::L_CLEAN | flang&String::L_OPTIMIZE_BIT)); - } - - /// appending string, passing language built into string being written - void write_pass_lang(const String& astring) { - wcontext->write(astring, String::L_PASS_APPENDED); - } - /// appending possible string, passing language built into string being written - void write_pass_lang(Value& avalue) { - wcontext->write(avalue, String::L_PASS_APPENDED); - } - DEFINE_DUAL(pass) - - /// appending possible string, assigning untaint language - void write_assign_lang(Value& avalue) { - wcontext->write(avalue, flang); - } - /// appending string, assigning untaint language - void write_assign_lang(const String& astring) { - wcontext->write(astring, flang); + /// appending string with it's languages + inline void write(const String& astring) { + wcontext->write(astring); + } + + /// in [] and {} appending string if get_string is not null, else appending value + /// in () appending string if is_string, else appending value + inline void write(Value& avalue) { + wcontext->write_as_string(avalue); + } + + /// allways appending value + inline void write_value(Value& avalue) { + wcontext->write(avalue); } - DEFINE_DUAL(assign) /// returns relative to @a path path to @a file const String& relative(const char* apath, const String& relative_name); @@ -276,22 +278,28 @@ public: /// returns an absolute @a path to relative @a name const String& absolute(const String& relative_name); + /// returns the mime type of 'user_file_name' + const String& mime_type_of(const String* file_name); + /// returns the mime type of 'user_file_name_cstr' const String& mime_type_of(const char* user_file_name_cstr); /// returns current SQL connection if any - SQL_Connection* connection(bool fail_on_error=true) { + SQL_Connection* connection(bool fail_on_error=true) { if(fail_on_error && !fconnection) - throw Exception("parser.runtime", - 0, - "outside of 'connect' operator"); - - return fconnection; + throw Exception(PARSER_RUNTIME, 0, "outside of 'connect' operator"); + return fconnection; } void set_interrupted(bool ainterrupted) { finterrupted=ainterrupted; } bool get_interrupted() { return finterrupted; } + void set_skip(Skip askip) { fskip=askip; } + Skip get_skip() { return fskip; } + + void set_in_cycle(int adelta) { fin_cycle+=adelta; } + bool get_in_cycle() { return fin_cycle>0; } + public: /// info from web server @@ -313,35 +321,46 @@ public: VResponse& response; /// $cookie:elements VCookie& cookie; + /// $console + VConsole& console; /// classes configured data - HashStringObject classes_conf; + HashString classes_conf; public: // status read methods VMethodFrame *get_method_frame() { return method_frame; } Value& get_self(); + #define GET_SELF(request, type) (static_cast(request.get_self())) - /* for strange reason call to this: - r.get_self() - refuses to compile - template T& get_self() { - return *static_cast(get_self().get()); - } - */ + /// public for ^reflection:copy[] + void put_element(Value& ncontext, const String& name, Value* value); + + /// for @main[] + const String* execute_virtual_method(Value& aself, const String& method_name); + + //{ for @conf[filespec] and @auto[filespec] and parser://method/call + const String* execute_method(Value& aself, const Method& method, Value* optional_param, bool do_return_string); + + struct Execute_nonvirtual_method_result { + const String* string; + Method* method; + Execute_nonvirtual_method_result(): string(0), method(0) {} + }; + + Execute_nonvirtual_method_result execute_nonvirtual_method(VStateless_class& aclass, const String& method_name, VString* optional_param, bool do_return_string); + //} #ifdef XML public: // charset helpers /// @see Charset::transcode - GdomeDOMString_auto_ptr transcode(const String& s); + xmlChar* transcode(const String& s); /// @see Charset::transcode - GdomeDOMString_auto_ptr transcode(const String::Body s); + xmlChar* transcode(const String::Body s); /// @see Charset::transcode - const String& transcode(GdomeDOMString* s); - /// @see Charset::transcode - const String& transcode(xmlChar* s); + const String& transcode(const xmlChar* s); #endif @@ -352,33 +371,18 @@ private: void configure_admin(VStateless_class& conf_class); + void configure(); + private: // compile.C - VStateless_class& compile(VStateless_class* aclass, - const char* source, const String* main_alias, - uint file_no); + ArrayClass& compile(VStateless_class* aclass, const char* source, const String* main_alias, uint file_no, int line_no_offset); private: // execute.C - /// for @postprocess[body] - StringOrValue execute_method(VMethodFrame& amethodFrame, const Method& method); - //{ for @conf[filespec] and @auto[filespec] - const String* execute_method(Value& aself, - const Method& method, VString* optional_param, - bool do_return_string); - struct Execute_nonvirtual_method_result { - const String* string; - Method* method; - Execute_nonvirtual_method_result(): string(0), method(0) {} - }; - Execute_nonvirtual_method_result execute_nonvirtual_method(VStateless_class& aclass, - const String& method_name, VString* optional_param, - bool do_return_string); - //} - /// for @main[] - const String* execute_virtual_method(Value& aself, const String& method_name); - - Value& get_element(Value& ncontext, const String& name, bool can_call_operator); + Value& get_element(Value& ncontext, const String& name); +#ifdef FEATURE_GET_ELEMENT4CALL + Value& get_element4call(Value& ncontext, const String& name); +#endif private: // defaults @@ -436,17 +440,17 @@ class Request_context_saver { SQL_Connection* fconnection; public: - Request_context_saver(Request& ar) : - exception_trace_top(ar.exception_trace.top_index()), - exception_trace_bottom(ar.exception_trace.bottom_index()), + Request_context_saver(Request& ar) : + fr(ar), + exception_trace_top(ar.exception_trace.top_index()), + exception_trace_bottom(ar.exception_trace.bottom_index()), stack(ar.stack.top_index()), anti_endless_execute_recoursion(ar.anti_endless_execute_recoursion), method_frame(ar.method_frame), rcontext(ar.rcontext), wcontext(ar.wcontext), flang(ar.flang), - fconnection(ar.fconnection), - fr(ar) {} + fconnection(ar.fconnection) {} void restore() { fr.exception_trace.set_top_index(exception_trace_top); fr.exception_trace.set_bottom_index(exception_trace_bottom); @@ -458,49 +462,64 @@ public: } }; -/// Auto-object used for temporary changing Request::flang. -class Temp_lang { +/// Auto-object used for temporary changing Request::fconnection. +class Temp_connection { Request& frequest; - String::Language saved_lang; + SQL_Connection* saved_connection; public: - Temp_lang(Request& arequest, String::Language alang) : + Temp_connection(Request& arequest, SQL_Connection* aconnection) : frequest(arequest), - saved_lang(arequest.set_lang(alang)) { + saved_connection(arequest.set_connection(aconnection)) { } - ~Temp_lang() { - frequest.restore_lang(saved_lang); + ~Temp_connection() { + frequest.restore_connection(saved_connection); } }; -/// Auto-object used for temporary changing Request::fconnection. -class Temp_connection { +/// Auto-object used for break out of cycle check +class InCycle { Request& frequest; - SQL_Connection* saved_connection; public: - Temp_connection(Request& arequest, SQL_Connection* aconnection) : - frequest(arequest), - saved_connection(arequest.set_connection(aconnection)) { + InCycle(Request& arequest) : frequest(arequest) { + frequest.set_in_cycle(1); } - ~Temp_connection() { - frequest.restore_connection(saved_connection); + ~InCycle() { + frequest.set_in_cycle(-1); } }; +/// Auto-object used for temporary changing Request::allow_class_replace. +class Temp_class_replace { + Request& frequest; +public: + Temp_class_replace(Request& arequest, bool avalue) : frequest(arequest){ + frequest.allow_class_replace=avalue; + } + ~Temp_class_replace() { + frequest.allow_class_replace=false; + } +}; + +/// Auto-object used for temporarily substituting/removing elements +class Temp_value_element { + Request& frequest; + Value& fwhere; + const String& fname; + Value* saved; +public: + Temp_value_element(Request& arequest, Value& awhere, const String& aname, Value* awhat); + ~Temp_value_element(); +}; // defines for externs -#define CONTENT_DISPOSITION_NAME "content-disposition" -#define CONTENT_DISPOSITION_VALUE "attachment" -#define CONTENT_DISPOSITION_FILENAME_NAME "filename" +#define EXCEPTION_HANDLED_PART_NAME "handled" + // externs extern const String main_method_name; extern const String auto_method_name; -extern const String body_name; -extern const String content_disposition_name; -extern const String content_disposition_value; -extern const String content_disposition_filename_name; extern const String exception_type_part_name; extern const String exception_source_part_name;