--- parser3/src/include/pa_request.h 2003/03/24 17:52:19 1.160.2.37.2.11 +++ parser3/src/include/pa_request.h 2016/10/05 18:41:54 1.232 @@ -1,16 +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: 2003/03/24 17:52:19 $"; +#define IDENT_PA_REQUEST_H "$Id: pa_request.h,v 1.232 2016/10/05 18:41:54 moko Exp $" -#include "pa_request_info.h" +#include "pa_pool.h" #include "pa_hash.h" #include "pa_wcontext.h" #include "pa_value.h" @@ -19,81 +19,154 @@ static const char* IDENT_REQUEST_H="$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 class Temp_lang; class Methoded; class VMethodFrame; -class GdomeDOMString_auto_ptr; -class VMail; DECLARE_OBJECT_PTR(VMail); -class VForm; DECLARE_OBJECT_PTR(VForm); -class VResponse; DECLARE_OBJECT_PTR(VResponse); -class VCookie; DECLARE_OBJECT_PTR(VCookie); -class VStateless_class; DECLARE_OBJECT_PTR(VStateless_class); +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; - ///@{ core data - - /// classes - HashStringValue fclasses; +public: + class Trace { + const String* fname; + Operation::Origin forigin; + public: + Trace(): fname(0) {} + void clear() { fname=0; } - /// already used files to avoid cyclic uses - Hash used_files; + Trace(const String* aname, const Operation::Origin aorigin): + fname(aname), forigin(aorigin) {} - /** endless execute(execute(... preventing counter - @see ANTI_ENDLESS_EXECUTE_RECOURSION - */ - uint anti_endless_execute_recoursion; + const String* name() const { return fname; } + 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 { - const String* string() const { return value->get_string(); } - Value* value; - ArrayOperation* ops; - VMethodFrame* method_frame; + Value* fvalue; + ArrayOperation* fops; + VMethodFrame* fmethod_frame; + public: + Value& value() const { return *fvalue; } + const String& string() const { + 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): value(avalue) {} - StackItem(ArrayOperation* aops): ops(aops) {} - StackItem(VMethodFrame* amethod_frame): method_frame(amethod_frame) {} + StackItem(Value& avalue): fvalue(&avalue) {} + StackItem(ArrayOperation& aops): fops(&aops) {} + StackItem(VMethodFrame& amethod_frame): fmethod_frame(&amethod_frame) {} }; - //@{ request processing status - /// exception stack trace - //Stack exception_trace; + class Exception_trace: public Stack { + size_t fbottom; + public: + Exception_trace(): fbottom(0) {} + + size_t bottom_index() { return fbottom; } + void set_bottom_index(size_t abottom) { fbottom=abottom; } + element_type bottom_value() { return get(bottom_index()); } + + void clear() { + fused=fbottom=0; + } + + bool is_empty() { + return fused==fbottom; + } + }; + + ///@{ core data + + /// classes + HashString fclasses; + + /// already used files to avoid cyclic uses + 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 + uint anti_endless_execute_recoursion; + + ///@} + /// execution stack Stack stack; + + /// exception stack trace + 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: + uint register_file(String::Body file_spec); + + struct Exception_details { + const Operation::Origin origin; + const String* problem_source; + VHash& vhash; + 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() { + stack.wipe_unused(); + } #ifdef RESOURCES_DEBUG /// measures @@ -102,92 +175,81 @@ 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 + void op_call(VMethodFrame &frame); + void op_call_write(VMethodFrame &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, - 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); + void use_file(VStateless_class& aclass, 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& filespec, const char* filespec_cstr); // 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_filename(const Method* method); // execute.C + const String* get_used_filename(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)); + (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)); + 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); + 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); + wcontext->write(avalue, String::L_PASS_APPENDED); } - DEFINE_DUAL(pass) /// appending possible string, assigning untaint language void write_assign_lang(Value& avalue) { @@ -197,7 +259,11 @@ public: void write_assign_lang(const String& astring) { wcontext->write(astring, flang); } - DEFINE_DUAL(assign) + + /// appending sure value + void write_value(Value& avalue) { + wcontext->write(avalue); + } /// returns relative to @a path path to @a file const String& relative(const char* apath, const String& relative_name); @@ -205,22 +271,28 @@ 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 @@ -242,33 +314,49 @@ 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); + + /// executes parser method, use op_call(frame) to execute native method + void execute_method(VMethodFrame& aframe); + + //{ 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 - 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 @@ -279,31 +367,18 @@ private: void configure_admin(VStateless_class& conf_class); + void configure(); + private: // compile.C - VStateless_class& compile(VStateless_class* aclass, const char* source, const char* file); + 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] - const String& 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(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 @@ -346,31 +421,37 @@ class Request_context_saver { Request& fr; /// exception stack trace - int exception_trace; + size_t exception_trace_top; + size_t exception_trace_bottom; /// execution stack - int stack; + size_t stack; + uint anti_endless_execute_recoursion; /// contexts - VMethodFrame *method_frame; - Value *rcontext; - WContext *wcontext; + VMethodFrame* method_frame; + Value* rcontext; + WContext* wcontext; /// current language String::Language flang; /// current connection SQL_Connection* fconnection; public: - Request_context_saver(Request& ar) : - //exception_trace(ar.exception_trace.top_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.top_index(exception_trace); - fr.stack.top_index(stack); + 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.method_frame=method_frame, fr.rcontext=rcontext; fr.wcontext=wcontext; fr.flang=flang; fr.fconnection=fconnection; @@ -382,12 +463,12 @@ class Temp_lang { Request& frequest; String::Language saved_lang; public: - Temp_lang(Request& arequest, String::Language alang) : + Temp_lang(Request& arequest, String::Language alang) : frequest(arequest), saved_lang(arequest.set_lang(alang)) { } - ~Temp_lang() { - frequest.restore_lang(saved_lang); + ~Temp_lang() { + frequest.restore_lang(saved_lang); } }; @@ -396,30 +477,64 @@ 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); + } +}; + +/// 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; +extern const String exception_comment_part_name; +extern const String exception_handled_part_name; // defines for statics