--- parser3/src/include/pa_request.h 2002/02/08 07:27:44 1.120 +++ parser3/src/include/pa_request.h 2003/01/29 15:39:27 1.160.2.6 @@ -1,16 +1,17 @@ /** @file Parser: request class decl. - Copyright (c) 2001, 2002 ArtLebedev Group (http://www.artlebedev.com) - Author: Alexander Petrosyan (http://paf.design.ru) - - $Id: pa_request.h,v 1.120 2002/02/08 07:27:44 paf Exp $ + Copyright (c) 2001, 2003 ArtLebedev Group (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: 2003/01/29 15:39:27 $"; + #include "pa_pool.h" +#include "pa_request_info.h" #include "pa_hash.h" #include "pa_wcontext.h" #include "pa_value.h" @@ -20,31 +21,36 @@ #include "pa_venv.h" #include "pa_vstatus.h" #include "pa_vform.h" +#include "pa_vmail.h" #include "pa_vmath.h" #include "pa_vrequest.h" #include "pa_vresponse.h" #include "pa_vcookie.h" -#include "pa_sql_driver_manager.h" +#include "pa_request_info.h" +#include "pa_request_charsets.h" #ifdef RESOURCES_DEBUG #include #endif +// consts + +#define MAIN_METHOD_NAME "main" +const uint ANTI_ENDLESS_EXECUTE_RECOURSION=500; + +// defines + #ifndef NO_STRING_ORIGIN # define COMPILE_PARAMS \ - const char *source, \ - VStateless_class *aclass, const String *name, \ - VStateless_class *base_class, \ - const char *file -# define COMPILE(source, aclass, name, base_class, file) \ - real_compile(source, aclass, name, base_class, file) + VStateless_class& aclass, const char *source \ + , const char *file +# define COMPILE(aclass, source, file) \ + real_compile(aclass, source, file) #else # define COMPILE_PARAMS \ - const char *source, \ - VStateless_class *aclass, const String *name, \ - VStateless_class *base_class -# define COMPILE(source, aclass, name, base_class, file) \ - real_compile(source, aclass, name, base_class) + VStateless_class& aclass, const char *source +# define COMPILE(aclass, source, file) \ + real_compile(aclass, source) #endif class Temp_lang; @@ -52,40 +58,52 @@ class Methoded; class VMethodFrame; /// Main workhorse. -class Request : public Pooled { +class Request: public PA_Object { friend class Temp_lang; friend class Temp_connection; + friend class Request_context_saver; + friend class Temp_request_self; + + /// all files and classes and other hard-to-place allocations go to this pool + Pool fpool; + + //@{ request processing status + /// exception stack trace + Stack exception_trace; + /// execution stack + Stack stack; + /// contexts + VMethodFrame *method_frame; + Value *rcontext; + WContext *wcontext; + /// current language + uchar flang; + /// current connection + SQL_Connection *fconnection; + //@} + /// interrupted flag, raised on signals [SIGPIPE] + bool finterrupted; + public: + /// all files and classes and other hard-to-place allocations go to this pool + Pool& pool() { return fpool; } + #ifdef RESOURCES_DEBUG /// measures double sql_connect_time; double sql_request_time; #endif - /// some information from web server - class Info { - public: - const char *document_root; - const char *path_translated; - const char *method; - const char *query_string; - const char *uri; - const char *content_type; - size_t content_length; - const char *cookie; - const char *user_agent; - }; - - Request(Pool& apool, - Info& ainfo, + Request( + Request_info& ainfo, uchar adefault_lang, ///< all tainted data default untainting lang bool status_allowed ///< status class allowed ); ~Request(); /// global classes - Hash& classes() { return fclasses; } + HashStringValue& classes() { return fclasses; } /** core request processing @@ -93,62 +111,100 @@ public: BEWARE: may throw exception to you: catch it! */ void core( - const char *root_config_filespec, ///< system config filespec - bool root_config_fail_on_read_problem, ///< fail if system config file not found - const char *site_config_filespec, ///< site config filespec - bool site_config_fail_on_read_problem, ///< fail if site config file not found + const char *config_filespec, ///< system config filespec + bool config_fail_on_read_problem, ///< fail if system config file not found bool header_only); /// executes ops void execute(const Array& ops); // execute.C + /// execute ops with anti-recoursion check + void recoursion_checked_execute(ConstStringPtr name, const Array& 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", + name, + "call canceled - endless recursion detected"); + } + execute(ops); // execute it + anti_endless_execute_recoursion--; + } /// compiles the file, maybe forcing it's class @a name and @a base_class. - VStateless_class *use_file( + VStateless_class *use_file(VStateless_class& aclass, const String& file_name, - bool ignore_class_path=false, bool fail_on_read_problem=true, - const String *name=0, - VStateless_class *base_class=0); // core.C + bool ignore_class_path=false, + bool fail_on_read_problem=true, bool fail_on_file_absence=true); // core.C /// compiles a @a source buffer - VStateless_class *use_buf( - const char *source, const char *file, - VStateless_class *aclass=0, const String *name=0, - VStateless_class *base_class=0); // core.C + VStateless_class *use_buf(VStateless_class& aclass, + const char *source, + const String& filespec, const char *filespec_cstr); // core.C + /// processes any code-junction there may be inside of @a value - Value& process( - Value& value, - const String *name=0, - bool intercept_string=true); // execute.C + StringOrValue process(ValuePtr input_value, bool intercept_string=true); // execute.C + //@{ convinient helpers + ConstStringPtr process_to_string(ValuePtr input_value) { + return process(input_value, true/*intercept_string*/).as_string(&pool()); + } + ValuePtr process_to_value(ValuePtr input_value, bool intercept_string=true) { + return process(input_value, intercept_string).as_value(); + } + //@} + + +#define DEFINE_DUAL(modification) \ + void write_##modification##_lang(StringOrValue dual) { \ + if(ConstStringPtr string=dual.get_string()) \ + write_##modification##_lang(*string); \ + else \ + write_##modification##_lang(dual.get_value()); \ + } +#define DEFINE_DUAL_CHECKED(modification) \ + void write_##modification##_lang(StringOrValue dual, ConstStringPtr origin) { \ + if(ConstStringPtr string=dual.get_string()) \ + write_##modification##_lang(*string); \ + else \ + write_##modification##_lang(dual.get_value(), origin); \ + } /// appending, sure of clean string inside void write_no_lang(const String& astring) { wcontext->write(astring, String::UL_CLEAN | flang&String::UL_OPTIMIZE_BIT); } + /// appending sure value, that would be converted to clean string + void write_no_lang(ValuePtr avalue) { + if(wcontext->get_in_expression()) + wcontext->write(avalue); + else + wcontext->write(pool(), avalue, + String::UL_CLEAN | flang&String::UL_OPTIMIZE_BIT); + } + /// appending string, passing language built into string being written void write_pass_lang(const String& astring) { wcontext->write(astring, String::UL_PASS_APPENDED); } + /// appending possible string, passing language built into string being written + void write_pass_lang(ValuePtr avalue) { + wcontext->write(pool(), avalue, String::UL_PASS_APPENDED); + } + DEFINE_DUAL(pass) + /// appending possible string, assigning untaint language - void write_assign_lang(Value& avalue) { - wcontext->write(avalue, flang); + void write_assign_lang(ValuePtr avalue) { + wcontext->write(pool(), avalue, flang); + } + /// appending possible string, assigning untaint language + void write_assign_lang(ValuePtr avalue, ConstStringPtr origin) { + wcontext->write(pool(), avalue, flang, origin); } /// appending string, assigning untaint language void write_assign_lang(const String& astring) { wcontext->write(astring, flang); } - /// appending possible string, passing language built into string being written - void write_pass_lang(Value& avalue) { - wcontext->write(avalue, String::UL_PASS_APPENDED); - } - /// appending sure value, that would be converted to clean string - void write_no_lang(Value& avalue) { - wcontext->write(avalue, - String::UL_CLEAN | flang&String::UL_OPTIMIZE_BIT); - } - /// appending sure value, not VString - void write_expr_result(Value& avalue) { - wcontext->write(avalue); - } + DEFINE_DUAL(assign) + DEFINE_DUAL_CHECKED(assign) /// returns relative to @a path path to @a file const String& relative(const char *apath, const String& relative_name); @@ -160,30 +216,41 @@ public: const String& mime_type_of(const char *user_file_name_cstr); /// returns current SQL connection if any - SQL_Connection *connection(const String *source) { + SQL_Connection *connection(ConstStringPtr source) { if(!fconnection && source) - throw Exception(0, 0, + throw Exception("parser.runtime", source, "outside of 'connect' operator"); return fconnection; } + bool origins_mode(); + + void interrupt() { finterrupted=true; } + bool interrupted() { return finterrupted; } + public: /// info from web server - Info& info; - /// user's post data - char *post_data; size_t post_size; + Request_info& info; + + /// source, client, mail charsets + Request_charsets charsets; - /// operators are methods of this class - Methoded& OP; + /// name of 'main' method + const String main_method_name; + + /// 'MAIN' class conglomerat & operators are methods of this class + VClass& main_class; /// $env:fields VEnv env; /// $status:fields VStatus status; /// $form:elements VForm form; + /// $mail + VMail mail; /// $math:constants VMath math; /// $request:elements @@ -193,35 +260,33 @@ public: /// $cookie:elements VCookie cookie; - /// contexts - Value *self, *root, *rcontext; - /// contexts - WContext *wcontext; + /// classes configured data + HashStringValue classes_conf; - /// 'MAIN' class conglomerat - VStateless_class *main_class; +public: // status read methods - /// classes configured data - Hash classes_conf; + VMethodFrame *get_method_frame() { return method_frame; } + Value *get_self(); private: // core data /// classes - Hash fclasses; + HashStringValue fclasses; /// already used files to avoid cyclic uses - Hash used_files; - - /// execution stack - Stack stack; + Hash used_files; /** endless execute(execute(... preventing counter @see ANTI_ENDLESS_EXECUTE_RECOURSION */ uint anti_endless_execute_recoursion; - /// stack trace - Stack trace; +private: + + /// already executed some @conf method + bool configure_admin_done; + + void configure_admin(VStateless_class& conf_class, const String *source); private: // compile.C @@ -229,15 +294,21 @@ private: // compile.C private: // execute.C - const String *execute_method(Value& aself, const Method& method, - bool return_cstr); + /// for @postprocess[body] const String& execute_method(VMethodFrame& amethodFrame, const Method& method); + //{ for @conf[filespec] and @auto[filespec] + void execute_method(Value& aself, + const Method& method, VString *optional_param, + const String **return_string); + void execute_nonvirtual_method(VStateless_class& aclass, + const String& method_name, VString *optional_param, + const String **return_string, + const Method **return_method=0); + //} + /// for @main[] const String *execute_virtual_method(Value& aself, const String& method_name); - const String *execute_nonvirtual_method(VStateless_class& aclass, - const String& method_name, - bool return_cstr); - Value *get_element(bool can_call_operator); + Value *get_element(const String *& remember_name, bool can_call_operator); private: // defaults @@ -260,11 +331,6 @@ private: // lang manipulation flang=alang; } -private: // lang&raw - - uchar flang; - - private: // connection manipulation SQL_Connection *set_connection(SQL_Connection *aconnection) { @@ -278,13 +344,43 @@ private: // connection manipulation private: - /// connection - SQL_Connection *fconnection; + void output_result(const VFile& body_file, bool header_only, bool as_attachment); +}; +/// Auto-object used to save request context across ^try body +class Request_context_saver { + Request& fr; -private: + /// exception stack trace + int exception_trace; + /// execution stack + int stack; + /// contexts + VMethodFrame *method_frame; + Value *rcontext; + WContext *wcontext; + /// current language + uchar flang; + /// current connection + SQL_Connection *fconnection; - void output_result(const VFile& body_file, bool header_only); +public: + Request_context_saver(Request& ar) : + exception_trace(ar.exception_trace.top_index()), + stack(ar.stack.top_index()), + method_frame(ar.method_frame), + rcontext(ar.rcontext), + wcontext(ar.wcontext), + flang(ar.flang), + fconnection(ar.fconnection), + fr(ar) {} + void restore() { + fr.exception_trace.top_index(exception_trace); + fr.stack.top_index(stack); + 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. @@ -315,69 +411,4 @@ public: } }; -/** - @b method parameters passed in this array. - contains handy typecast ad junction/not junction ensurers - -*/ -class MethodParams : public Array { -public: - MethodParams(Pool& pool, const String& amethod_name) : Array(pool), - fmethod_name(amethod_name) { - } - - /// handy typecast. I long for templates - Value& get(int index) { - return *static_cast(Array::get(index)); - } - /// handy is-value-a-junction ensurer - Value& as_junction(int index, const char *msg) { - return get_as(index, true, msg); - } - /// handy value-is-not-a-junction ensurer - Value& as_no_junction(int index, const char *msg) { - return get_as(index, false, msg); - } - /// handy expression auto-processing to double - double as_double(int index, const char *msg, Request& r) { - return get_processed(index, msg, r).as_double(); - } - /// handy expression auto-processing to int - int as_int(int index, const char *msg, Request& r) { - return get_processed(index, msg, r).as_int(); - } - /// handy expression auto-processing to bool - bool as_bool(int index, const char *msg, Request& r) { - return get_processed(index, msg, r).as_bool(); - } - /// handy string ensurer - const String& as_string(int index, const char *msg) { - return as_no_junction(index, msg).as_string(); - } - -private: - - /// handy value-is/not-a-junction ensurer - Value& get_as(int index, bool as_junction, const char *msg) { - Value& result=get(index); - if((result.get_junction()!=0) ^ as_junction) - throw Exception(0, 0, - &fmethod_name, - "%s (parameter #%d)", msg, 1+index); - - return result; - } - - Value& get_processed(int index, const char *msg, Request& r) { - return r.process(as_junction(index, msg), - 0/*no name*/, - false/*don't intercept string*/); - } - -private: - - const String& fmethod_name; - -}; - #endif