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version 1.8, 2001/02/22 10:43:42
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version 1.160.2.35, 2003/03/11 08:57:36
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| /* |
/** @file |
| $Id$ |
Parser: request class decl. |
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Copyright (c) 2001-2003 ArtLebedev Group (http://www.artlebedev.com) |
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Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru) |
| */ |
*/ |
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| #ifndef PA_REQUEST_H |
#ifndef PA_REQUEST_H |
| #define PA_REQUEST_H |
#define PA_REQUEST_H |
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static const char* IDENT_REQUEST_H="$Date$"; |
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| #include "pa_pool.h" |
#include "pa_pool.h" |
| #include "pa_exception.h" |
#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" |
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#include "pa_request_info.h" |
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#include "pa_request_charsets.h" |
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#include "pa_sapi.h" |
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#ifdef RESOURCES_DEBUG |
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#include <sys/resource.h> |
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#endif |
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// consts |
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| #define MAIN_METHOD_NAME "main" |
const uint ANTI_ENDLESS_EXECUTE_RECOURSION=1000; |
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// defines |
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| #ifndef NO_STRING_ORIGIN |
#ifndef NO_STRING_ORIGIN |
| # define COMPILE_PARAMS char *source, char *file |
# define COMPILE_PARAMS \ |
| # define COMPILE(source, file) real_compile(source, file) |
VStateless_class* aclass, const char* source \ |
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, const char* file |
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# define COMPILE(aclass, source, file) \ |
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real_compile(aclass, source, file) |
| #else |
#else |
| # define COMPILE_PARAMS char *source |
# define COMPILE_PARAMS \ |
| # define COMPILE(source, file) real_compile(source) |
VStateless_class* aclass, const char* source |
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# define COMPILE(aclass, source, file) \ |
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real_compile(aclass, source) |
| #endif |
#endif |
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|
| class Local_request_exception; |
// forwards |
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|
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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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/// all files and classes and other hard-to-place allocations go to this pool |
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Pool& fpool; |
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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<StringPtr, 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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///@} |
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public: |
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class StackItem { |
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public: |
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StringPtr string(Pool& pool) const { return value->get_string(&pool); } |
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ValuePtr value; |
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ArrayOperationPtr ops; |
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void *ptr; |
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|
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/// needed to fill unused Array entries |
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StackItem() {} |
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StackItem(ValuePtr avalue): value(avalue) {} |
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StackItem(ArrayOperationPtr aops): ops(aops) {} |
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StackItem(void *aptr): ptr(aptr) {} |
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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<StringPtr> 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_UL 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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| public: |
public: |
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/// all files and classes and other hard-to-place allocations go to this pool |
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Pool& pool() { return fpool; } |
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|
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#ifdef RESOURCES_DEBUG |
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/// 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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|
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Request(Pool& apool, SAPI_Info& asapi_info, Request_info& arequest_info, |
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String_UL adefault_lang, ///< all tainted data default untainting lang |
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bool status_allowed ///< status class allowed |
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); |
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~Request(); |
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|
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/// global classes |
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HashStringValue& classes() { return fclasses; } |
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|
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/** |
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core request processing |
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|
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BEWARE: may throw exception to you: catch it! |
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*/ |
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void core( |
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const char* config_filespec, ///< system config filespec |
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bool config_fail_on_read_problem, ///< fail if system config file not found |
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bool header_only); |
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/// executes ops |
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void execute(ArrayOperation& ops); // execute.C |
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/// execute ops with anti-recoursion check |
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void recoursion_checked_execute(StringPtr name, ArrayOperation& ops) { |
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// anti_endless_execute_recoursion |
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if(++anti_endless_execute_recoursion==ANTI_ENDLESS_EXECUTE_RECOURSION) { |
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anti_endless_execute_recoursion=0; // give @exception a chance |
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throw Exception("parser.runtime", |
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name, |
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"call canceled - endless recursion detected"); |
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} |
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execute(ops); // execute it |
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anti_endless_execute_recoursion--; |
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} |
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/// compiles the file, maybe forcing it's class @a name and @a base_class. |
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VStateless_classPtr use_file(VStateless_class& aclass, |
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StringPtr 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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VStateless_classPtr use_buf(VStateless_class& aclass, |
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const char* source, |
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StringPtr 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(ValuePtr input_value, bool intercept_string=true); // execute.C |
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//@{ convinient helpers |
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StringPtr process_to_string(ValuePtr input_value) { |
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return process(input_value, true/*intercept_string*/).as_string(&pool()); |
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} |
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ValuePtr process_to_value(ValuePtr input_value, bool intercept_string=true) { |
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return process(input_value, intercept_string).as_value(); |
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} |
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//@} |
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|
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| Request(Pool& apool) : Pooled(apool), |
#define DEFINE_DUAL(modification) \ |
| stack(apool), |
void write_##modification##_lang(StringOrValue dual) { \ |
| fclasses(apool) |
if(StringPtr string=dual.get_string()) \ |
| { |
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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#define DEFINE_DUAL_CHECKED(modification) \ |
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void write_##modification##_lang(StringOrValue dual, StringPtr origin) { \ |
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if(StringPtr 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(), origin); \ |
| } |
} |
| ~Request() {} |
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| // global classes |
/// appending, sure of clean string inside |
| Hash& classes() { return fclasses; } |
void write_no_lang(const String& astring) { |
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wcontext->write(astring, |
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String::UL_CLEAN | flang&String::UL_OPTIMIZE_BIT); |
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} |
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/// appending sure value, that would be converted to clean string |
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void write_no_lang(ValuePtr avalue) { |
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if(wcontext->get_in_expression()) |
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wcontext->write(pool(), avalue); |
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else |
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wcontext->write(pool(), avalue, |
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String::UL_CLEAN | flang&String::UL_OPTIMIZE_BIT); |
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} |
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/// 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::UL_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(ValuePtr avalue) { |
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wcontext->write(pool(), avalue, String::UL_PASS_APPENDED); |
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} |
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DEFINE_DUAL(pass) |
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|
| // core request processing |
/// appending possible string, assigning untaint language |
| void core(); |
void write_assign_lang(ValuePtr avalue) { |
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wcontext->write(pool(), avalue, flang); |
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} |
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/// appending possible string, assigning untaint language |
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void write_assign_lang(ValuePtr avalue, StringPtr origin) { |
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wcontext->write(pool(), avalue, flang, origin); |
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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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DEFINE_DUAL_CHECKED(assign) |
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| private: // core data |
/// returns relative to @a path path to @a file |
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StringPtr relative(const char* apath, StringPtr relative_name); |
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| // classes |
/// returns an absolute @a path to relative @a name |
| Hash fclasses; |
StringPtr absolute(StringPtr relative_name); |
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| // contexts |
/// returns the mime type of 'user_file_name_cstr' |
| Value *root, *self, *rcontext; |
StringPtr mime_type_of(const char* user_file_name_cstr); |
| WContext *wcontext; |
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/// returns current SQL connection if any |
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SQL_Connection *connection(StringPtr 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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|
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bool origins_mode(); |
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void interrupt() { finterrupted=true; } |
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bool interrupted() { return finterrupted; } |
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public: |
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|
| // execution stack |
/// info from web server |
| Stack stack; |
Request_info& request_info; |
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/// info about ServerAPI |
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SAPI_Info& sapi_info; |
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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_classPtr main_class; |
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/// $form:elements |
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VFormPtr form; |
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/// $mail |
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VMailPtr mail; |
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/// $response:elements |
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VResponsePtr response; |
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/// $cookie:elements |
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VCookiePtr cookie; |
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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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ValuePtr get_self(); |
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#define GET_SELF(request, type) (*static_cast<type *>(request.get_self().get())) |
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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(StringPtr s); |
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/// @see Charset::transcode |
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StringPtr transcode(GdomeDOMString* s |
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#ifndef NO_STRING_ORIGIN |
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, StringPtr origin |
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#endif |
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); |
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/// @see Charset::transcode |
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StringPtr transcode(xmlChar* s |
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#ifndef NO_STRING_ORIGIN |
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, StringPtr origin |
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#endif |
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); |
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#endif |
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private: |
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| private: // core.C |
/// already executed some @conf method |
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bool configure_admin_done; |
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| Array& load_and_compile_RUN(); |
void configure_admin(VStateless_class& conf_class, StringPtr source); |
| VClass *construct_class(String& name, Array& compiled_methods); |
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| char *execute_MAIN(VClass *class_RUN); |
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| private: // compile.C |
private: // compile.C |
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| Array& real_compile(COMPILE_PARAMS); |
VStateless_class& real_compile(COMPILE_PARAMS); |
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| private: // execute.C |
private: // execute.C |
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| void execute(Array& ops); |
/// for @postprocess[body] |
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StringPtr execute_method(VMethodFrame& amethodFrame, const Method& method); |
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//{ for @conf[filespec] and @auto[filespec] |
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StringPtr execute_method(ValuePtr aself, |
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const Method& method, VStringPtr optional_param, |
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bool do_return_string); |
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struct Execute_nonvirtual_method_result { |
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StringPtr string; |
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MethodPtr method; |
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}; |
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Execute_nonvirtual_method_result execute_nonvirtual_method(VStateless_class& aclass, |
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StringPtr method_name, VStringPtr optional_param, |
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bool do_return_string); |
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//} |
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/// for @main[] |
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StringPtr execute_virtual_method(ValuePtr aself, StringPtr method_name); |
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ValuePtr get_element(StringPtr& remember_name, bool can_call_operator); |
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private: // defaults |
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const String_UL fdefault_lang; |
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private: // mime types |
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/// $MAIN:MIME-TYPES |
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Table *mime_types; |
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private: // lang manipulation |
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String_UL set_lang(String_UL alang) { |
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String_UL result=flang; |
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flang=alang; |
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return result; |
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} |
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void restore_lang(String_UL alang) { |
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flang=alang; |
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} |
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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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void output_result(VFilePtr body_file, bool header_only, bool as_attachment); |
| }; |
}; |
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| // core func |
/// Auto-object used to save request context across ^try body |
| void core(); |
class Request_context_saver { |
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Request& fr; |
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|
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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_UL 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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|
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/// Auto-object used for temporary changing Request::flang. |
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class Temp_lang { |
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Request& frequest; |
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String_UL saved_lang; |
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public: |
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Temp_lang(Request& arequest, String_UL alang) : |
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frequest(arequest), |
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saved_lang(arequest.set_lang(alang)) { |
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} |
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~Temp_lang() { |
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frequest.restore_lang(saved_lang); |
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} |
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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 StringPtr main_method_name; |
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extern StringPtr auto_method_name; |
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extern StringPtr body_name; |
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extern StringPtr content_disposition_name; |
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extern StringPtr content_disposition_value; |
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extern StringPtr 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 |