--- parser3/src/include/pa_request.h 2005/08/09 08:14:50 1.179 +++ parser3/src/include/pa_request.h 2026/04/24 13:45:12 1.271 @@ -1,14 +1,14 @@ /** @file Parser: request class decl. - Copyright (c) 2001-2005 ArtLebedev Group (http://www.artlebedev.com) - Author: Alexandr Petrosian (http://paf.design.ru) + Copyright (c) 2001-2024 Art. Lebedev Studio (http://www.artlebedev.com) + Authors: Konstantin Morshnev , Alexandr Petrosian */ #ifndef PA_REQUEST_H #define PA_REQUEST_H -static const char * const IDENT_REQUEST_H="$Date: 2005/08/09 08:14:50 $"; +#define IDENT_PA_REQUEST_H "$Id: pa_request.h,v 1.271 2026/04/24 13:45:12 moko Exp $" #include "pa_pool.h" #include "pa_hash.h" @@ -19,13 +19,28 @@ static const char * const IDENT_REQUEST_ #include "pa_request_charsets.h" #include "pa_sapi.h" -#ifdef RESOURCES_DEBUG -#include -#endif +// defines for externs + +#define EXCEPTION_HANDLED_PART_NAME "handled" + + +// externs + +extern const String main_method_name; +extern const String auto_method_name; + +extern const String::Body exception_type_part_name; +extern const String::Body exception_source_part_name; +extern const String::Body exception_comment_part_name; +extern const String::Body exception_handled_part_name; + +// defines for statics + +#define MAIN_CLASS_NAME "MAIN" +#define AUTO_FILE_NAME "auto.p" // consts -const uint ANTI_ENDLESS_EXECUTE_RECOURSION=1000; const size_t pseudo_file_no__process=1; // forwards @@ -33,19 +48,27 @@ 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_loop_limit; +extern int pa_array_limit; +extern int pa_execute_recursion_limit; +extern int pa_httpd_timeout; +extern size_t pa_file_size_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 Temp_recursion; + friend class Request_context_saver; friend class Exception_trace; public: @@ -55,7 +78,6 @@ 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) {} @@ -64,6 +86,14 @@ public: const Operation::Origin origin() const { return forigin; } }; + enum Skip { + SKIP_NOTHING, + SKIP_CONTINUE, + SKIP_BREAK, + SKIP_RETURN, + SKIP_INTERRUPTED + }; + private: Pool fpool; public: @@ -82,9 +112,7 @@ private: 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) {} }; @@ -99,30 +127,29 @@ private: element_type bottom_value() { return get(bottom_index()); } void clear() { - ftop=fbottom=0; + fsize=fbottom=0; } bool is_empty() { - return ftop==fbottom; + return fsize==fbottom; } - const element_type extract_origin(const String*& problem_source); + Table &table(Request &r); }; ///@{ core data /// classes - HashStringValue fclasses; + OrderedHashString 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_recursion; ///@} @@ -133,31 +160,33 @@ 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; + +private: + + int fin_cycle; + Skip fskip; + VMethodFrame* freturn_method_frame; public: 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); @@ -174,128 +203,132 @@ 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; } + OrderedHashString& classes() { return fclasses; } + VStateless_class* get_class(const String& name); + VStateless_class& get_class_ref(const String& name); + void put_class(VStateless_class *aclass){ classes().put(aclass->type(), aclass); } + bool add_class(const char* atype, VStateless_class *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 header_only, const String& amain_method_name = main_method_name, const String* amain_class_name = NULL); /// executes ops void execute(ArrayOperation& ops); // execute.C - /// 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) { - anti_endless_execute_recoursion=0; // give @exception a chance - throw Exception("parser.runtime", - 0, //&name, - "call canceled - endless recursion detected"); + + 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-recursion check + void recursion_checked_execute(ArrayOperation& ops) { + if(++anti_endless_execute_recursion>=pa_execute_recursion_limit) { + anti_endless_execute_recursion=0; // give @exception a chance + throw Exception(PARSER_RUNTIME, 0, "call canceled - endless recursion detected"); } execute(ops); // execute it - anti_endless_execute_recoursion--; + anti_endless_execute_recursion--; } - /// 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_directly(const String& file_spec, bool fail_on_file_absence=true, bool with_auto_p=false); + + /// compiles the file in main class context by default + void use_file(const String& file_name, const String* use_filespec, bool with_auto_p=false); + + /// 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, - int line_no_offset=0); // 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 Operation::Origin get_method_origin(const Method* method); // execute.C + 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); - /// returns an absolute @a path to relative @a name - const String& absolute(const String& relative_name); + const String& full_disk_path(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; } + Skip get_skip() { return fskip; } + void set_skip(Skip askip) { fskip=askip; } + void set_skip_return(VMethodFrame& amethod_frame) { fskip=SKIP_RETURN; freturn_method_frame=&amethod_frame; } + inline bool check_skip_break() { bool result=fskip >= SKIP_BREAK; if(fskip <= SKIP_BREAK) fskip=SKIP_NOTHING; return result; } + inline void check_skip_return() { if(fskip==SKIP_RETURN && method_frame==freturn_method_frame) fskip=SKIP_NOTHING; } + + void set_in_cycle(int adelta) { fin_cycle+=adelta; } + bool get_in_cycle() { return fin_cycle>0; } public: @@ -318,54 +351,40 @@ public: VResponse& response; /// $cookie:elements VCookie& cookie; + /// $console + VConsole& console; /// classes configured data - Hash 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 @main[] and parser://method/call + const String* execute_method(VStateless_class& aclass, const String& method_name, Value* optional_param = 0); + + //{ for @conf[filespec] and @auto[filespec] + bool execute_method_if_exists(VStateless_class& aclass, const String& method_name, Value* optional_param); + bool execute_auto_method_if_exists(VStateless_class& aclass, const String& method_name, Value* optional_param); - /// for @postprocess[body] - StringOrValue execute_method(VMethodFrame& amethodFrame, const Method& method); - //{ for @conf[filespec] and @auto[filespec] and parser://method/call - 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); //} #ifdef XML public: // charset helpers /// @see Charset::transcode - GdomeDOMString_auto_ptr transcode(const String& s); - /// @see Charset::transcode - GdomeDOMString_auto_ptr transcode(const String::Body s); + xmlChar* transcode(const String& s); /// @see Charset::transcode - const String& transcode(GdomeDOMString* s); + xmlChar* transcode(const String::Body s); /// @see Charset::transcode - const String& transcode(xmlChar* s); + const String& transcode(const xmlChar* s); #endif @@ -380,15 +399,14 @@ private: private: // compile.C - VStateless_class& compile(VStateless_class* aclass, - const char* source, const String* main_alias, - uint file_no, - int line_no_offset); + ArrayClass& compile(VStateless_class* aclass, const char* source, const String* main_alias, uint file_no, int line_no_offset); private: // execute.C - void put_element(Value& ncontext, const String& name, Value& value); - 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 @@ -399,17 +417,6 @@ private: // mime types /// $MAIN:MIME-TYPES Table *mime_types; -private: // lang manipulation - - String::Language set_lang(String::Language alang) { - String::Language result=flang; - flang=alang; - return result; - } - void restore_lang(String::Language alang) { - flang=alang; - } - private: // connection manipulation SQL_Connection* set_connection(SQL_Connection* aconnection) { @@ -435,7 +442,7 @@ class Request_context_saver { size_t exception_trace_bottom; /// execution stack size_t stack; - uint anti_endless_execute_recoursion; + uint anti_endless_execute_recursion; /// contexts VMethodFrame* method_frame; Value* rcontext; @@ -446,12 +453,12 @@ class Request_context_saver { SQL_Connection* fconnection; public: - Request_context_saver(Request& ar) : + Request_context_saver(Request& ar) : fr(ar), - exception_trace_top(ar.exception_trace.top_index()), - exception_trace_bottom(ar.exception_trace.bottom_index()), + 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), + anti_endless_execute_recursion(ar.anti_endless_execute_recursion), method_frame(ar.method_frame), rcontext(ar.rcontext), wcontext(ar.wcontext), @@ -461,67 +468,89 @@ public: fr.exception_trace.set_top_index(exception_trace_top); fr.exception_trace.set_bottom_index(exception_trace_bottom); fr.stack.set_top_index(stack); - fr.anti_endless_execute_recoursion=anti_endless_execute_recoursion; + fr.anti_endless_execute_recursion=anti_endless_execute_recursion; fr.method_frame=method_frame, fr.rcontext=rcontext; fr.wcontext=wcontext; fr.flang=flang; fr.fconnection=fconnection; } }; -/// Auto-object used for temporary changing Request::flang. -class Temp_lang { - Request& frequest; - String::Language saved_lang; -public: - Temp_lang(Request& arequest, String::Language alang) : - frequest(arequest), - saved_lang(arequest.set_lang(alang)) { - } - ~Temp_lang() { - frequest.restore_lang(saved_lang); - } -}; - /// Auto-object used for temporary changing Request::fconnection. class Temp_connection { Request& frequest; SQL_Connection* saved_connection; public: - Temp_connection(Request& arequest, SQL_Connection* aconnection) : + Temp_connection(Request& arequest, SQL_Connection* aconnection) : frequest(arequest), saved_connection(arequest.set_connection(aconnection)) { } - ~Temp_connection() { + ~Temp_connection() { frequest.restore_connection(saved_connection); } }; +/// Auto-object used for break out of cycle check +class InCycle { + Request& frequest; +public: + InCycle(Request& arequest) : frequest(arequest) { + frequest.set_in_cycle(1); + } + ~InCycle() { + frequest.set_in_cycle(-1); + } +}; -// 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 +/// Auto-object used for break out of cycle check +class TempSkip4Delimiter { + Request& frequest; + Request::Skip fskip; +public: + TempSkip4Delimiter(Request& arequest) : frequest(arequest), fskip(arequest.get_skip()) { + frequest.set_skip(Request::SKIP_NOTHING); + } + // returns true if break required, should be called + bool check_break() { + if(frequest.get_skip()) + fskip=frequest.get_skip(); + frequest.set_skip(fskip <= Request::SKIP_BREAK ? Request::SKIP_NOTHING : fskip); + return fskip >= Request::SKIP_BREAK; + } +}; -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; -extern const String exception_comment_part_name; -extern const String exception_handled_part_name; +/// 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; + } +}; -// defines for statics +/// 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(); +}; -#define MAIN_CLASS_NAME "MAIN" -#define AUTO_FILE_NAME "auto.p" +/// Auto-object that temporarily increases recursion +class Temp_recursion { + Request& frequest; +public: + Temp_recursion(Request& arequest) : frequest(arequest){ + frequest.anti_endless_execute_recursion++; + } + ~Temp_recursion(){ + frequest.anti_endless_execute_recursion--; + } +}; #endif