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| version 1.147, 2004/03/23 09:43:44 | version 1.194, 2009/07/14 11:14:34 |
|---|---|
| Line 1 | Line 1 |
| /** @file | /** @file |
| Parser: parser @b operators. | Parser: parser @b operators. |
| Copyright (c) 2001-2004 ArtLebedev Group (http://www.artlebedev.com) | Copyright (c) 2001-2009 ArtLebedev Group (http://www.artlebedev.com) |
| Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru) | Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru) |
| */ | */ |
| Line 22 static const char * const IDENT_OP_C="$D | Line 22 static const char * const IDENT_OP_C="$D |
| // limits | // limits |
| #define MAX_LOOPS 10000 | #define MAX_LOOPS 20000 |
| // defines | // defines |
| Line 38 public: | Line 38 public: |
| VClassMAIN(); | VClassMAIN(); |
| }; | }; |
| // defines for globals | |
| #define CYCLE_DATA_NAME "CYCLE-DATA" | |
| // globals | |
| //^for & co | |
| String cycle_data_name(CYCLE_DATA_NAME); | |
| // defines for statics | // defines for statics |
| #define SWITCH_DATA_NAME "SWITCH-DATA" | #define SWITCH_DATA_NAME "SWITCH-DATA" |
| #define CACHE_DATA_NAME "CACHE-DATA" | #define CACHE_DATA_NAME "CACHE-DATA" |
| #define EXCEPTION_VAR_NAME "exception" | #define EXCEPTION_VAR_NAME "exception" |
| // statics | // statics |
| Line 53 static const String cache_data_name(CACH | Line 63 static const String cache_data_name(CACH |
| static const String exception_var_name(EXCEPTION_VAR_NAME); | static const String exception_var_name(EXCEPTION_VAR_NAME); |
| // local defines | // local defines |
| #define CACHE_EXCEPTION_HANDLED_CACHE_NAME "cache" | #define CACHE_EXCEPTION_HANDLED_CACHE_NAME "cache" |
| // helpers | // helpers |
| class Untaint_lang_name2enum: public Hash<const String::Body, String::Language> { | class Untaint_lang_name2enum: public HashString<String::Language> { |
| public: | public: |
| Untaint_lang_name2enum() { | Untaint_lang_name2enum() { |
| #define ULN(name, LANG) \ | #define ULN(name, LANG) \ |
| Line 70 public: | Line 81 public: |
| ULN("http-header", HTTP_HEADER); | ULN("http-header", HTTP_HEADER); |
| ULN("mail-header", MAIL_HEADER); | ULN("mail-header", MAIL_HEADER); |
| ULN("uri", URI); | ULN("uri", URI); |
| ULN("table", TABLE); | |
| ULN("sql", SQL); | ULN("sql", SQL); |
| ULN("js", JS); | ULN("js", JS); |
| ULN("xml", XML); | ULN("xml", XML); |
| ULN("optimized-xml", XML|String::L_OPTIMIZE_BIT); | ULN("optimized-xml", XML|String::L_OPTIMIZE_BIT); |
| ULN("html", HTML); | ULN("html", HTML); |
| ULN("optimized-html", HTML|String::L_OPTIMIZE_BIT); | ULN("optimized-html", HTML|String::L_OPTIMIZE_BIT); |
| ULN("regex", REGEX); | |
| ULN("parser-code", PARSER_CODE); | |
| #undef ULN | #undef ULN |
| } | } |
| } untaint_lang_name2enum; | } untaint_lang_name2enum; |
| Line 84 public: | Line 96 public: |
| // methods | // methods |
| static void _if(Request& r, MethodParams& params) { | static void _if(Request& r, MethodParams& params) { |
| Value& condition_code=params.as_junction(0, "condition must be expression"); | bool condition=params.as_bool(0, "condition must be expression", r); |
| bool condition=r.process_to_value(condition_code, | |
| false/*don't intercept string*/).as_bool(); | |
| if(condition) | if(condition) |
| r.write_pass_lang(r.process(params.as_junction(1, "'then' parameter must be code"))); | r.process_write(*params.get(1)); |
| else if(params.count()>2) | else if(params.count()>2) |
| r.write_pass_lang(r.process(params.as_junction(2, "'else' parameter must be code"))); | r.process_write(*params.get(2)); |
| } | } |
| static void _untaint(Request& r, MethodParams& params) { | static String::Language get_untaint_lang(MethodParams& params, int index){ |
| const String& lang_name=params.as_string(index, "lang must be string"); | |
| String::Language lang=untaint_lang_name2enum.get(lang_name); | |
| if(!lang) | |
| throw Exception(PARSER_RUNTIME, | |
| &lang_name, | |
| "invalid taint language"); | |
| return lang; | |
| } | |
| static void _untaint(Request& r, MethodParams& params) { | |
| String::Language lang; | String::Language lang; |
| if(params.count()==1) | if(params.count()==1) |
| lang=String::L_AS_IS; // mark as simply 'tainted'. useful in html from sql | lang=String::L_AS_IS; // mark as simply 'as-is'. useful in html from sql |
| else { | else |
| const String& lang_name=params.as_string(0, "lang must be string"); | lang=get_untaint_lang(params, 0); |
| lang=untaint_lang_name2enum.get(lang_name); | |
| if(!lang) | |
| throw Exception(0, | |
| &lang_name, | |
| "invalid taint language"); | |
| } | |
| { | { |
| Value& vbody=params.as_junction(params.count()-1, "body must be code"); | Value& vbody=params.as_junction(params.count()-1, "body must be code"); |
| Temp_lang temp_lang(r, lang); // set temporarily specified ^untaint[language; | Temp_lang temp_lang(r, lang); // set temporarily specified ^untaint[language; |
| r.write_pass_lang(r.process(vbody)); // process marking tainted with that lang | StringOrValue result=r.process(vbody); // process marking tainted with that lang |
| r.write_assign_lang(result); | |
| } | } |
| } | } |
| static void _taint(Request& r, MethodParams& params) { | static void _taint(Request& r, MethodParams& params) { |
| String::Language lang; | String::Language lang; |
| if(params.count()==1) | if(params.count()==1) |
| lang=String::L_TAINTED; // mark as simply 'tainted'. useful in table:set | lang=String::L_TAINTED; // mark as simply 'tainted'. useful in table:create |
| else { | else |
| const String& lang_name=params.as_string(0, "lang must be string"); | lang=get_untaint_lang(params, 0); |
| lang=untaint_lang_name2enum.get(lang_name); | |
| if(!lang) | |
| throw Exception(0, | |
| &lang_name, | |
| "invalid taint language"); | |
| } | |
| { | { |
| Value& vbody=params.as_no_junction(params.count()-1, "body must not be code"); | Value& vbody=params.as_no_junction(params.count()-1, "body must not be code"); |
| String result; | String result(vbody.as_string(), lang); // force result language to specified |
| result.append( | r.write_assign_lang(result); |
| vbody.as_string(), // process marking tainted with that lang | |
| lang, true); // force result language to specified | |
| r.write_pass_lang(result); | |
| } | } |
| } | } |
| Line 155 static void _process(Request& r, MethodP | Line 159 static void _process(Request& r, MethodP |
| { | { |
| VStateless_class *target_class=target_self->get_last_derived_class(); | VStateless_class *target_class=target_self->get_last_derived_class(); |
| if(!target_class) | if(!target_class) |
| throw Exception("parser.runtime", | throw Exception(PARSER_RUNTIME, |
| 0, | 0, |
| "no target class"); | "no target class"); |
| // temporary remove language change | // temporary remove language change |
| Temp_lang temp_lang(r, String::L_PASS_APPENDED); | Temp_lang temp_lang(r, String::L_PARSER_CODE); |
| // temporary zero @main so to maybe-replace it in processed code | // temporary zero @main so to maybe-replace it in processed code |
| Temp_method temp_method_main(*target_class, main_method_name, 0); | Temp_method temp_method_main(*target_class, main_method_name, 0); |
| // temporary zero @auto so it wouldn't be auto-called in Request::use_buf | // temporary zero @auto so it wouldn't be auto-called in Request::use_buf |
| Line 172 static void _process(Request& r, MethodP | Line 176 static void _process(Request& r, MethodP |
| Value& voptions=params.as_no_junction(options_index, "options must not be code"); | Value& voptions=params.as_no_junction(options_index, "options must not be code"); |
| options=voptions.get_hash(); | options=voptions.get_hash(); |
| if(!options) | if(!options) |
| throw Exception("parser.runtime", | throw Exception(PARSER_RUNTIME, |
| 0, | 0, |
| "options must be hash"); | "options must be hash"); |
| } | } |
| Line 196 static void _process(Request& r, MethodP | Line 200 static void _process(Request& r, MethodP |
| } | } |
| if(valid_options!=options->count()) | if(valid_options!=options->count()) |
| throw Exception("parser.runtime", | throw Exception(PARSER_RUNTIME, |
| 0, | 0, |
| "called with invalid option"); | "called with invalid option"); |
| } | } |
| Line 209 static void _process(Request& r, MethodP | Line 213 static void _process(Request& r, MethodP |
| // evaluate source to process | // evaluate source to process |
| const String& source=r.process_to_string(vjunction); | const String& source=r.process_to_string(vjunction); |
| r.use_buf(*target_class, | r.use_buf(*target_class, |
| source.cstr(String::L_UNSPECIFIED, r.connection(false)), | source.untaint_cstr(String::L_AS_IS, r.connection(false)), |
| main_alias, | main_alias, |
| processe_file_no, | processe_file_no, |
| line_no_alias_offset); | line_no_alias_offset); |
| Line 232 static void _rem(Request&, MethodParams& | Line 236 static void _rem(Request&, MethodParams& |
| } | } |
| static void _while(Request& r, MethodParams& params) { | static void _while(Request& r, MethodParams& params) { |
| Value& vcondition=params.as_junction(0, "condition must be expression"); | Temp_hash_value<const String::Body, void*> |
| Value& body=params.as_junction(1, "body must be code"); | cycle_data_setter(r.classes_conf, cycle_data_name, /*any not null flag*/&r); |
| Value& vcondition=params.as_expression(0, "condition must be number, bool or expression"); | |
| Value& body_code=params.as_junction(1, "body must be code"); | |
| Value* delim_maybe_code=params.count()>2?¶ms[2]:0; | |
| // while... | // while... |
| int endless_loop_count=0; | int endless_loop_count=0; |
| while(true) { | if(delim_maybe_code){ // delimiter set |
| if(++endless_loop_count>=MAX_LOOPS) // endless loop? | bool need_delim=false; |
| throw Exception("parser.runtime", | while(true) { |
| 0, | if(++endless_loop_count>=MAX_LOOPS) // endless loop? |
| "endless loop detected"); | throw Exception(PARSER_RUNTIME, |
| 0, | |
| "endless loop detected"); | |
| bool condition=r.process_to_value(vcondition, | if(!r.process_to_value(vcondition, false/*don't intercept string*/).as_bool()) |
| false/*don't intercept string*/).as_bool(); | break; |
| if(!condition) // ...condition is true | |
| break; | StringOrValue sv_processed=r.process(body_code); |
| Request::Skip lskip=r.get_skip(); r.set_skip(Request::SKIP_NOTHING); | |
| // write processed body | const String* s_processed=sv_processed.get_string(); |
| r.write_pass_lang(r.process(body)); | if(s_processed && !s_processed->is_empty()) { // we have body |
| if(need_delim) // need delim & iteration produced string? | |
| r.write_pass_lang(r.process(*delim_maybe_code)); | |
| else | |
| need_delim=true; | |
| } | |
| r.write_pass_lang(sv_processed); | |
| if(lskip==Request::SKIP_BREAK) | |
| break; | |
| } | |
| } else { | |
| while(true) { | |
| if(++endless_loop_count>=MAX_LOOPS) // endless loop? | |
| throw Exception(PARSER_RUNTIME, | |
| 0, | |
| "endless loop detected"); | |
| if(!r.process_to_value(vcondition, false/*don't intercept string*/).as_bool()) | |
| break; | |
| r.process_write(body_code); | |
| Request::Skip lskip=r.get_skip(); r.set_skip(Request::SKIP_NOTHING); | |
| if(lskip==Request::SKIP_BREAK) | |
| break; | |
| } | |
| } | } |
| } | } |
| static void _use(Request& r, MethodParams& params) { | static void _use(Request& r, MethodParams& params) { |
| Value& vfile=params.as_no_junction(0, "file name must not be code"); | Value& vfile=params.as_no_junction(0, FILE_NAME_MUST_NOT_BE_CODE); |
| r.use_file(r.main_class, vfile.as_string()); | r.use_file(r.main_class, vfile.as_string()); |
| } | } |
| static void set_skip(Request& r, Request::Skip askip) { | |
| void* data=r.classes_conf.get(cycle_data_name); | |
| if(!data) | |
| throw Exception(PARSER_RUNTIME, | |
| 0, | |
| "without cycle"); | |
| r.set_skip(askip); | |
| } | |
| static void _break(Request& r, MethodParams&) { | |
| set_skip(r, Request::SKIP_BREAK); | |
| } | |
| static void _continue(Request& r, MethodParams&) { | |
| set_skip(r, Request::SKIP_CONTINUE); | |
| } | |
| static void _for(Request& r, MethodParams& params) { | static void _for(Request& r, MethodParams& params) { |
| Temp_hash_value<const String::Body, void*> | |
| cycle_data_setter(r.classes_conf, cycle_data_name, /*any not null flag*/&r); | |
| const String& var_name=params.as_string(0, "var name must be string"); | const String& var_name=params.as_string(0, "var name must be string"); |
| int from=params.as_int(1, "from must be int", r); | int from=params.as_int(1, "from must be int", r); |
| int to=params.as_int(2, "to must be int", r); | int to=params.as_int(2, "to must be int", r); |
| Value& body_code=params.as_junction(3, "body must be code"); | Value& body_code=params.as_junction(3, "body must be code"); |
| Value* delim_maybe_code=params.count()>4?¶ms[4]:0; | Value* delim_maybe_code=params.count()>4?¶ms[4]:0; |
| if(to-from>=MAX_LOOPS) // too long loop? | if(to-from>=MAX_LOOPS) // too long loop? |
| throw Exception("parser.runtime", | throw Exception(PARSER_RUNTIME, |
| 0, | 0, |
| "endless loop detected"); | "endless loop detected"); |
| bool need_delim=false; | |
| VInt* vint=new VInt(0); | VInt* vint=new VInt(0); |
| r.get_method_frame()->caller()->put_element(var_name, vint, false); | |
| for(int i=from; i<=to; i++) { | VMethodFrame& caller=*r.get_method_frame()->caller(); |
| vint->set_int(i); | caller.put_element(caller, var_name, vint, false); |
| if(delim_maybe_code){ // delimiter set | |
| StringOrValue sv_processed=r.process(body_code); | bool need_delim=false; |
| const String* s_processed=sv_processed.get_string(); | |
| if(delim_maybe_code && s_processed && s_processed->length()) { // delimiter set and we have body | for(int i=from; i<=to; i++) { |
| if(need_delim) // need delim & iteration produced string? | vint->set_int(i); |
| r.write_pass_lang(r.process(*delim_maybe_code)); | |
| need_delim=true; | StringOrValue sv_processed=r.process(body_code); |
| Request::Skip lskip=r.get_skip(); r.set_skip(Request::SKIP_NOTHING); | |
| const String* s_processed=sv_processed.get_string(); | |
| if(s_processed && !s_processed->is_empty()) { // we have body | |
| if(need_delim) // need delim & iteration produced string? | |
| r.write_pass_lang(r.process(*delim_maybe_code)); | |
| else | |
| need_delim=true; | |
| } | |
| r.write_pass_lang(sv_processed); | |
| if(lskip==Request::SKIP_BREAK) | |
| break; | |
| } | |
| } else { | |
| for(int i=from; i<=to; i++) { | |
| vint->set_int(i); | |
| r.process_write(body_code); | |
| Request::Skip lskip=r.get_skip(); r.set_skip(Request::SKIP_NOTHING); | |
| if(lskip==Request::SKIP_BREAK) | |
| break; | |
| } | } |
| r.write_pass_lang(sv_processed); | |
| } | } |
| } | } |
| Line 291 static void _eval(Request& r, MethodPara | Line 371 static void _eval(Request& r, MethodPara |
| Value& expr=params.as_junction(0, "need expression"); | Value& expr=params.as_junction(0, "need expression"); |
| // evaluate expresion | // evaluate expresion |
| Value& value_result=r.process_to_value(expr, | Value& value_result=r.process_to_value(expr, |
| true/*don't intercept string*/).as_expr_result(); | false/*don't intercept string*/).as_expr_result(); |
| if(params.count()>1) { | if(params.count()>1) { |
| Value& fmt=params.as_no_junction(1, "fmt must not be code"); | const String& fmt=params.as_string(1, "fmt must be string").trim(); |
| r.write_no_lang(String(format(value_result.as_double(), fmt.as_string().cstrm()))); | if(fmt.is_empty()){ |
| r.write_no_lang(value_result); | |
| } else { | |
| r.write_no_lang(String(format(value_result.as_double(), fmt.cstrm()))); | |
| } | |
| } else | } else |
| r.write_no_lang(value_result); | r.write_no_lang(value_result); |
| } | } |
| Line 320 gettimeofday(&mt[0],NULL); | Line 404 gettimeofday(&mt[0],NULL); |
| // connect | // connect |
| SQL_Connection* connection=SQL_driver_manager->get_connection(url.as_string(), | SQL_Connection* connection=SQL_driver_manager->get_connection(url.as_string(), |
| protocol2driver_and_client, | protocol2driver_and_client, |
| r.charsets.source().NAME().cstr()); | r.charsets.source().NAME().cstr(), |
| r.request_info.document_root); | |
| #ifdef RESOURCES_DEBUG | #ifdef RESOURCES_DEBUG |
| //measure:after connect | //measure:after connect |
| Line 335 r.sql_connect_time+=t[1]-t[0]; | Line 420 r.sql_connect_time+=t[1]-t[0]; |
| Temp_connection temp_connection(r, connection); | Temp_connection temp_connection(r, connection); |
| // execute body | // execute body |
| try { | try { |
| r.write_assign_lang(r.process(body_code)); | r.process_write(body_code); |
| connection->commit(); | connection->commit(); |
| connection->close(); | connection->close(); |
| } catch(...) { // process problem | } catch(...) { // process problem |
| Line 349 r.sql_connect_time+=t[1]-t[0]; | Line 434 r.sql_connect_time+=t[1]-t[0]; |
| class Switch_data: public PA_Object { | class Switch_data: public PA_Object { |
| public: | public: |
| Request& r; | Request& r; |
| Value& searching; | const String* searching_string; |
| double searching_double; | |
| Value* found; | Value* found; |
| Value* _default; | Value* _default; |
| public: | public: |
| Switch_data(Request& ar, Value& asearching): | Switch_data(Request& ar, Value& asearching): |
| r(ar), searching(asearching) {} | r(ar) |
| { | |
| if(asearching.is_string() || asearching.is_void()){ | |
| searching_string=&asearching.as_string(); | |
| searching_double=0; | |
| } else { | |
| searching_string=0; | |
| searching_double=asearching.as_double(); | |
| } | |
| } | |
| }; | }; |
| #endif | #endif |
| static void _switch(Request& r, MethodParams& params) { | static void _switch(Request& r, MethodParams& params) { |
| Line 373 static void _switch(Request& r, MethodPa | Line 468 static void _switch(Request& r, MethodPa |
| static void _case(Request& r, MethodParams& params) { | static void _case(Request& r, MethodParams& params) { |
| Switch_data* data=static_cast<Switch_data*>(r.classes_conf.get(switch_data_name)); | Switch_data* data=static_cast<Switch_data*>(r.classes_conf.get(switch_data_name)); |
| if(!data) | if(!data) |
| throw Exception("parser.runtime", | throw Exception(PARSER_RUNTIME, |
| 0, | 0, |
| "without switch"); | "without switch"); |
| if(data->found) // matches already was found | |
| return; | |
| int count=params.count(); | int count=params.count(); |
| Value& code=params.as_junction(--count, "case result must be code"); | Value* code=¶ms.as_expression(--count, "case result must be code"); |
| #ifdef USE_DESTRUCTORS | |
| Junction *j=code->get_junction(); | |
| if (j){ | |
| code=new VJunction(j->self,j->method,j->method_frame,j->rcontext,j->wcontext,j->code); | |
| if (j->wcontext) j->wcontext->attach_junction((VJunction *)code); | |
| } | |
| #endif | |
| for(int i=0; i<count; i++) { | for(int i=0; i<count; i++){ |
| Value& value=r.process_to_value(params[i]); | Value& value=r.process_to_value(params[i]); |
| if(value.as_string() == CASE_DEFAULT_VALUE) { | if(value.is_string() && value.as_string() == CASE_DEFAULT_VALUE){ |
| data->_default=&code; | data->_default=code; |
| break; | continue; |
| } | } |
| bool matches; | bool matches; |
| if(data->searching.is_string()) | if(data->searching_string) |
| matches=data->searching.as_string() == value.as_string(); | matches=(*data->searching_string) == value.as_string(); |
| else | else |
| matches=data->searching.as_double() == value.as_double(); | matches=data->searching_double == value.as_double(); |
| if(matches) { | |
| if(data->found) | |
| throw Exception("parser.runtime", | |
| 0, | |
| "duplicate found"); | |
| data->found=&code; | if(matches){ |
| data->found=code; | |
| break; | break; |
| } | } |
| } | } |
| Line 418 struct Try_catch_result { | Line 519 struct Try_catch_result { |
| template<class I> | template<class I> |
| static Try_catch_result try_catch(Request& r, | static Try_catch_result try_catch(Request& r, |
| StringOrValue body_code(Request&, I), I info, | StringOrValue body_code(Request&, I), I info, |
| Value* catch_code) | Value* catch_code, |
| bool could_be_handled_by_caller=false) | |
| { | { |
| Try_catch_result result; | Try_catch_result result; |
| if(!catch_code) { | if(!catch_code) { |
| result.processed_code=body_code(r, info); | result.processed_code=body_code(r, info); |
| return result; | return result; |
| Line 438 static Try_catch_result try_catch(Reques | Line 541 static Try_catch_result try_catch(Reques |
| Junction* junction=catch_code->get_junction(); | Junction* junction=catch_code->get_junction(); |
| Value* method_frame=junction->method_frame; | Value* method_frame=junction->method_frame; |
| Value* saved_exception_var_value=method_frame->get_element(exception_var_name, *method_frame, false); | Value* saved_exception_var_value=method_frame->get_element(exception_var_name, *method_frame, false); |
| junction->method_frame->put_element(exception_var_name, &details.vhash, false); | VMethodFrame& frame=*junction->method_frame; |
| frame.put_element(frame, exception_var_name, &details.vhash, false); | |
| result.processed_code=r.process(*catch_code); | result.processed_code=r.process(*catch_code); |
| // retriving $exception.handled, restoring $exception var | // retriving $exception.handled, restoring $exception var |
| Value* vhandled=details.vhash.hash().get(exception_handled_part_name); | Value* vhandled=details.vhash.hash().get(exception_handled_part_name); |
| junction->method_frame->put_element(exception_var_name, saved_exception_var_value, false); | frame.put_element(frame, exception_var_name, saved_exception_var_value, false); |
| bool bhandled=false; | bool bhandled=false; |
| if(vhandled) { | if(vhandled) { |
| if(vhandled->is_string()) { // not simple $exception.handled(1/0)? | if(vhandled->is_string()) { // not simple $exception.handled(1/0)? |
| result.exception_should_be_handled=vhandled->get_string(); // considering 'recovered' and let the caller recover | if(could_be_handled_by_caller) { // and we can possibly handle it |
| return result; | result.exception_should_be_handled=vhandled->get_string(); // considering 'recovered' and let the caller recover |
| } | return result; |
| } | |
| bhandled=vhandled->as_bool(); | |
| bhandled=false; | |
| } else | |
| bhandled=vhandled->as_bool(); | |
| } | } |
| if(!bhandled) { | if(!bhandled) { |
| Line 460 static Try_catch_result try_catch(Reques | Line 568 static Try_catch_result try_catch(Reques |
| rethrow; | rethrow; |
| } | } |
| } | } |
| return result; | return result; |
| } | } |
| Line 467 static Try_catch_result try_catch(Reques | Line 576 static Try_catch_result try_catch(Reques |
| // consts | // consts |
| const int DATA_STRING_SERIALIZED_VERSION=0x0005; | const int DATA_STRING_SERIALIZED_VERSION=0x0006; |
| // helper types | // helper types |
| Line 479 struct Data_string_serialized_prolog { | Line 588 struct Data_string_serialized_prolog { |
| #endif | #endif |
| void cache_delete(const String& file_spec) { | void cache_delete(const String& file_spec) { |
| file_delete(file_spec, false/*fail_on_read_problem*/); | file_delete(file_spec, false/*fail_on_problem*/); |
| } | } |
| #ifndef DOXYGEN | #ifndef DOXYGEN |
| Line 491 public: | Line 600 public: |
| struct Locked_process_and_cache_put_action_info { | struct Locked_process_and_cache_put_action_info { |
| Request *r; | Request *r; |
| Cache_scope *scope; | Cache_scope *scope; |
| Value* body_code; Value* catch_code; | Value* body_code; |
| Value* catch_code; | |
| const String* processed_code; | const String* processed_code; |
| }; | }; |
| #endif | #endif |
| Line 499 struct Locked_process_and_cache_put_acti | Line 609 struct Locked_process_and_cache_put_acti |
| static StringOrValue process_cache_body_code(Request& r, Value* body_code) { | static StringOrValue process_cache_body_code(Request& r, Value* body_code) { |
| return StringOrValue(&r.process_to_string(*body_code), 0); | return StringOrValue(r.process_to_string(*body_code)); |
| } | } |
| /* @todo maybe network order worth spending some effort? | /* @todo maybe network order worth spending some effort? |
| Line 510 static void locked_process_and_cache_put | Line 620 static void locked_process_and_cache_put |
| Locked_process_and_cache_put_action_info& info= | Locked_process_and_cache_put_action_info& info= |
| *static_cast<Locked_process_and_cache_put_action_info *>(context); | *static_cast<Locked_process_and_cache_put_action_info *>(context); |
| const String* body_from_disk=info.scope->body_from_disk; | |
| // body->process | // body->process |
| Try_catch_result result=try_catch(*info.r, | Try_catch_result result=try_catch(*info.r, |
| process_cache_body_code, info.body_code, | process_cache_body_code, info.body_code, |
| info.catch_code); | info.catch_code, body_from_disk!=0 /*we have something old=we can handle=recover later*/); |
| if(result.exception_should_be_handled) { | if(result.exception_should_be_handled) { |
| if(*result.exception_should_be_handled==CACHE_EXCEPTION_HANDLED_CACHE_NAME) { | if(*result.exception_should_be_handled==CACHE_EXCEPTION_HANDLED_CACHE_NAME) { |
| if(const String* body_from_disk=info.scope->body_from_disk) // we have something old? | assert(body_from_disk); |
| info.processed_code=body_from_disk; | info.processed_code=body_from_disk; |
| else | |
| throw Exception(0, | |
| new String("$"EXCEPTION_VAR_NAME"."EXCEPTION_HANDLED_PART_NAME"["CACHE_EXCEPTION_HANDLED_CACHE_NAME"]"), | |
| "fallback failed - there is no old cached body"); | |
| } else | } else |
| throw Exception("parser.runtime", | throw Exception(PARSER_RUNTIME, |
| result.exception_should_be_handled, | result.exception_should_be_handled, |
| "$"EXCEPTION_VAR_NAME"."EXCEPTION_HANDLED_PART_NAME" value must be " | "$"EXCEPTION_VAR_NAME"."EXCEPTION_HANDLED_PART_NAME" value must be " |
| "either boolean or string '"CACHE_EXCEPTION_HANDLED_CACHE_NAME"'"); | "either boolean or string '"CACHE_EXCEPTION_HANDLED_CACHE_NAME"'"); |
| Line 556 const String* locked_process_and_cache_p | Line 663 const String* locked_process_and_cache_p |
| const String* result=file_write_action_under_lock( | const String* result=file_write_action_under_lock( |
| file_spec, | file_spec, |
| "cache_put", locked_process_and_cache_put_action, &info, | "cache_put", |
| locked_process_and_cache_put_action, | |
| &info, | |
| false/*as_text*/, | false/*as_text*/, |
| false/*do_append*/, | false/*do_append*/, |
| false/*block*/, | false/*block == don't wait till other thread release lock*/, |
| false/*fail on lock problem*/) ? info.processed_code: 0; | false/*dun throw exception if lock failed*/) ? info.processed_code: 0; |
| time_t now=time(0); | time_t now=time(0); |
| if(scope.expires<=now) | if(scope.expires<=now) |
| cache_delete(file_spec); | cache_delete(file_spec); |
| Line 612 static const String& as_file_spec(Reques | Line 722 static const String& as_file_spec(Reques |
| return r.absolute(params.as_string(index, "filespec must be string")); | return r.absolute(params.as_string(index, "filespec must be string")); |
| } | } |
| static void _cache(Request& r, MethodParams& params) { | static void _cache(Request& r, MethodParams& params) { |
| if(params.count()==0) { | |
| // ^cache[] -- return current expiration time | |
| Cache_scope* scope=static_cast<Cache_scope*>(r.classes_conf.get(cache_data_name)); | |
| if(!scope) | |
| throw Exception(PARSER_RUNTIME, | |
| 0, | |
| "expire-time get without cache"); | |
| r.write_no_lang(*new VDate(scope->expires)); | |
| return; | |
| } | |
| time_t now=time(0); | time_t now=time(0); |
| // ^cache[filename] ^cache(seconds) ^cache[expires date] | |
| if(params.count()==1) { | if(params.count()==1) { |
| // ^cache[filename] ^cache(seconds) ^cache[expires date] | |
| if(params[0].is_string()) { // filename? | if(params[0].is_string()) { // filename? |
| cache_delete(as_file_spec(r, params, 0)); | cache_delete(as_file_spec(r, params, 0)); |
| return; | return; |
| Line 624 static void _cache(Request& r, MethodPar | Line 745 static void _cache(Request& r, MethodPar |
| // secods|expires date | // secods|expires date |
| Cache_scope* scope=static_cast<Cache_scope*>(r.classes_conf.get(cache_data_name)); | Cache_scope* scope=static_cast<Cache_scope*>(r.classes_conf.get(cache_data_name)); |
| if(!scope) | if(!scope) |
| throw Exception("parser.runtime", | throw Exception(PARSER_RUNTIME, |
| 0, | 0, |
| "expire-time reducing instruction without cache"); | "expire-time reducing instruction without cache"); |
| Line 633 static void _cache(Request& r, MethodPar | Line 754 static void _cache(Request& r, MethodPar |
| scope->expires=expires; | scope->expires=expires; |
| return; | return; |
| } | } else if(params.count()<3) |
| throw Exception(PARSER_RUNTIME, | |
| 0, | |
| "invalid number of parameters"); | |
| // file_spec, expires, body code | // file_spec, expires, body code |
| const String& file_spec=r.absolute(params.as_string(0, "filespec must be string")); | const String& file_spec=as_file_spec(r, params, 0); |
| Cache_scope scope={as_expires(r, params, 1, now), 0}; | Cache_scope scope={as_expires(r, params, 1, now), 0}; |
| Line 647 static void _cache(Request& r, MethodPar | Line 771 static void _cache(Request& r, MethodPar |
| if(params.count()>3) | if(params.count()>3) |
| catch_code=¶ms.as_junction(3, "catch_code must be code"); | catch_code=¶ms.as_junction(3, "catch_code must be code"); |
| if(scope.expires>now) { // valid 'expires' specified? try cached copy... | if(scope.expires>now) { |
| // hence we don't hope to have unary create/lockEX | Cache_get_result cached=cache_get(r.charsets, file_spec, now); |
| // we need some plan to live in a life like that, so... | |
| // worst races plan: | |
| // A B | |
| // open | |
| // |open | |
| // lockSH | |
| // |nonblocking-lockEX fails | |
| // unlockSH | |
| // close, cache_get returns 0 | |
| // open | |
| // nonblocking-lockEX succeeds; process, write, close | |
| // |retry1: open | |
| // ... | |
| // |lockSH succeeds; ... | |
| for(int retry=0; retry<2; retry++) { | |
| Cache_get_result cached=cache_get(r.charsets, file_spec, now); | |
| if(cached.body) { // have cached copy | |
| if(cached.expired) | |
| scope.body_from_disk=cached.body; // storing for user to retrive it with ^cache[] | |
| else // and it's not expired yet | |
| { | |
| // write it out | |
| r.write_assign_lang(*cached.body); | |
| // happy with it | |
| return; | |
| } | |
| } | |
| // non-blocked lock; process; cache it | if(cached.body) { // have cached copy |
| if(const String* processed_body= | if(cached.expired) { |
| locked_process_and_cache_put(r, body_code, catch_code, scope, file_spec)) { | scope.body_from_disk=cached.body; // storing for user to retrive it with ^cache[] |
| // write it out | } else { |
| r.write_assign_lang(*processed_body); | // and it's not expired yet write it out |
| // happy with it | r.write_assign_lang(*cached.body); |
| return; | // happy with it |
| } else { // somebody writing result right now | return; |
| pa_sleep(0, 500000); // waiting half a second | } |
| retry=0; // prolonging our wait, than could cache_get it, without processing body_code | } |
| } | |
| } | // no cached info or it's already expired |
| throw Exception(0, | |
| &file_spec, | // trying to process it under lock and store result in file |
| "locking problem"); | const String* processed_body=locked_process_and_cache_put(r, body_code, catch_code, scope, file_spec); |
| if(processed_body){ | |
| // write it out | |
| r.write_assign_lang(*processed_body); | |
| // happy with it | |
| return; | |
| } else { | |
| // we fail while get exclusive lock. nvm, we just execute body_code a bit later | |
| } | |
| } else { | } else { |
| // instructed not to cache; forget cached copy | // instructed not to cache; forget cached copy |
| cache_delete(file_spec); | cache_delete(file_spec); |
| // process | |
| const String& processed_body=r.process_to_string(body_code); | |
| // write it out | |
| r.write_assign_lang(processed_body); | |
| // happy with it | |
| return; | |
| } | } |
| // never reached | |
| // process without cacheing | |
| const String& processed_body=r.process_to_string(body_code); | |
| // write it out | |
| r.write_assign_lang(processed_body); | |
| } | } |
| static StringOrValue process_try_body_code(Request& r, Value* body_code) { | static StringOrValue process_try_body_code(Request& r, Value* body_code) { |
| Line 712 static StringOrValue process_try_body_co | Line 814 static StringOrValue process_try_body_co |
| static void _try_operator(Request& r, MethodParams& params) { | static void _try_operator(Request& r, MethodParams& params) { |
| Value& body_code=params.as_junction(0, "body_code must be code"); | Value& body_code=params.as_junction(0, "body_code must be code"); |
| Value& catch_code=params.as_junction(1, "catch_code must be code"); | Value& catch_code=params.as_junction(1, "catch_code must be code"); |
| Value* finally_code=(params.count()==3) ? ¶ms.as_junction(2, "finally_code must be code") : 0; | |
| Try_catch_result result=try_catch(r, | Try_catch_result result; |
| process_try_body_code, &body_code, | StringOrValue finally_result; |
| &catch_code); | try{ |
| result=try_catch(r, | |
| if(result.exception_should_be_handled) | process_try_body_code, &body_code, |
| throw Exception("parser.runtime", | &catch_code); |
| result.exception_should_be_handled, | if(result.exception_should_be_handled) |
| "catch block must set $exception.handled to some boolean value, not string"); | throw Exception(PARSER_RUNTIME, |
| result.exception_should_be_handled, | |
| "catch block must set $exception.handled to some boolean value, not string"); | |
| } catch(...){ | |
| if(finally_code) | |
| finally_result=r.process(*finally_code); | |
| rethrow; | |
| } | |
| if(finally_code) | |
| finally_result=r.process(*finally_code); | |
| // write out processed body_code or catch_code | // write out processed body_code or catch_code |
| r.write_pass_lang(result.processed_code); | r.write_pass_lang(result.processed_code); |
| // write out processed finally code | |
| if(finally_code) | |
| r.write_pass_lang(finally_result); | |
| } | } |
| static void _throw_operator(Request&, MethodParams& params) { | static void _throw_operator(Request&, MethodParams& params) { |
| if(params.count()==1) { | if(params.count()==1 && !params[0].is_string()) { |
| if(HashStringValue *hash=params[0].get_hash()) { | if(HashStringValue *hash=params[0].get_hash()) { |
| const char* type=0; | const char* type=0; |
| if(Value* value=hash->get(exception_type_part_name)) | if(Value* value=hash->get(exception_type_part_name)) |
| Line 743 static void _throw_operator(Request&, Me | Line 860 static void _throw_operator(Request&, Me |
| source?source:0, | source?source:0, |
| "%s", comment?comment:""); | "%s", comment?comment:""); |
| } else | } else |
| throw Exception("parser.runtime", | throw Exception(PARSER_RUNTIME, |
| 0, | 0, |
| "one-param version has hash param"); | "one-param version has hash or string param"); |
| } else { | } else { |
| const char* type=params.as_string(0, "type must be string").cstr(); | const char* type=params.as_string(0, "type must be string").cstr(); |
| const String& source=params.as_string(1, "source must be string"); | const String* source=params.count()>1? ¶ms.as_string(1, "source must be string"):0; |
| const char* comment=params.count()>2? params.as_string(2, "comment must be string").cstr() | const char* comment=params.count()>2? params.as_string(2, "comment must be string").cstr():0; |
| :0; | throw Exception(type, source, "%s", comment?comment:""); |
| throw Exception(type, &source, "%s", comment?comment:""); | |
| } | } |
| } | } |
| static void _sleep_operator(Request& r, MethodParams& params) { | |
| double seconds=params.as_double(0, "seconds must be double", r); | |
| pa_sleep((int)trunc(seconds), (int)trunc(seconds*1000)); | |
| } | |
| #if defined(WIN32) && defined(_DEBUG) | #if defined(WIN32) && defined(_DEBUG) |
| # define PA_BPT | # define PA_BPT |
| static void _bpt(Request&, MethodParams&) { | static void _bpt(Request&, MethodParams&) { |
| Line 774 VClassMAIN::VClassMAIN(): VClass() { | Line 895 VClassMAIN::VClassMAIN(): VClass() { |
| // ^if(condition){code-when-true} | // ^if(condition){code-when-true} |
| // ^if(condition){code-when-true}{code-when-false} | // ^if(condition){code-when-true}{code-when-false} |
| add_native_method("if", Method::CT_ANY, _if, 2, 3); | add_native_method("if", Method::CT_ANY, _if, 2, 3, Method::CO_WITHOUT_FRAME); |
| // ^untaint[as-is|uri|sql|js|html|html-typo]{code} | // ^untaint[as-is|uri|sql|js|html|html-typo|regex|parser-code]{code} |
| add_native_method("untaint", Method::CT_ANY, _untaint, 1, 2); | add_native_method("untaint", Method::CT_ANY, _untaint, 1, 2, Method::CO_WITHOUT_FRAME); |
| // ^taint[as-is|uri|sql|js|html|html-typo]{code} | // ^taint[as-is|uri|sql|js|html|html-typo|regex|parser-code]{code} |
| add_native_method("taint", Method::CT_ANY, _taint, 1, 2); | add_native_method("taint", Method::CT_ANY, _taint, 1, 2, Method::CO_WITHOUT_FRAME); |
| // ^process[code] | // ^process[code] |
| add_native_method("process", Method::CT_ANY, _process, 1, 3); | add_native_method("process", Method::CT_ANY, _process, 1, 3); |
| // ^rem{code} | // ^rem{code} |
| add_native_method("rem", Method::CT_ANY, _rem, 1, 10000); | add_native_method("rem", Method::CT_ANY, _rem, 1, 10000, Method::CO_WITHOUT_FRAME); |
| // ^while(condition){code} | // ^while(condition){code} |
| add_native_method("while", Method::CT_ANY, _while, 2, 2); | add_native_method("while", Method::CT_ANY, _while, 2, 3, Method::CO_WITHOUT_FRAME); |
| // ^use[file] | // ^use[file] |
| add_native_method("use", Method::CT_ANY, _use, 1, 1); | add_native_method("use", Method::CT_ANY, _use, 1, 1); |
| // ^break[] | |
| add_native_method("break", Method::CT_ANY, _break, 0, 0, Method::CO_WITHOUT_FRAME); | |
| // ^continue[] | |
| add_native_method("continue", Method::CT_ANY, _continue, 0, 0, Method::CO_WITHOUT_FRAME); | |
| // ^for[i](from-number;to-number-inclusive){code}[delim] | // ^for[i](from-number;to-number-inclusive){code}[delim] |
| add_native_method("for", Method::CT_ANY, _for, 3+1, 3+1+1); | add_native_method("for", Method::CT_ANY, _for, 3+1, 3+1+1, Method::CO_WITHOUT_WCONTEXT); |
| // ^eval(expr) | // ^eval(expr) |
| // ^eval(expr)[format] | // ^eval(expr)[format] |
| add_native_method("eval", Method::CT_ANY, _eval, 1, 2); | add_native_method("eval", Method::CT_ANY, _eval, 1, 2, Method::CO_WITHOUT_FRAME); |
| // ^connect[protocol://user:pass@host[:port]/database]{code with ^sql-s} | // ^connect[protocol://user:pass@host[:port]/database]{code with ^sql-s} |
| add_native_method("connect", Method::CT_ANY, _connect, 2, 2); | add_native_method("connect", Method::CT_ANY, _connect, 2, 2); |
| Line 807 VClassMAIN::VClassMAIN(): VClass() { | Line 934 VClassMAIN::VClassMAIN(): VClass() { |
| // ^cache[file_spec](time){code}[{catch code}] time=0 no cache | // ^cache[file_spec](time){code}[{catch code}] time=0 no cache |
| // ^cache[file_spec] delete cache | // ^cache[file_spec] delete cache |
| add_native_method("cache", Method::CT_ANY, _cache, 1, 4); | // ^cache[] get current expiration time |
| add_native_method("cache", Method::CT_ANY, _cache, 0, 4); | |
| // switch | // switch |
| // ^switch[value]{cases} | // ^switch[value]{cases} |
| add_native_method("switch", Method::CT_ANY, _switch, 2, 2); | add_native_method("switch", Method::CT_ANY, _switch, 2, 2, Method::CO_WITHOUT_FRAME); |
| // ^case[value]{code} | // ^case[value]{code} |
| add_native_method("case", Method::CT_ANY, _case, 2, 10000); | add_native_method("case", Method::CT_ANY, _case, 2, 10000, Method::CO_WITHOUT_FRAME); |
| // try-catch | // try-catch |
| // ^try{code}{catch code} | // ^try{code}{catch code} |
| add_native_method("try", Method::CT_ANY, _try_operator, 2, 2); | add_native_method("try", Method::CT_ANY, _try_operator, 2, 3, Method::CO_WITHOUT_FRAME); |
| // ^throw[$exception hash] | // ^throw[$exception hash] |
| // ^throw[type;source;comment] | // ^throw[type;source;comment] |
| add_native_method("throw", Method::CT_ANY, _throw_operator, 1, 3); | add_native_method("throw", Method::CT_ANY, _throw_operator, 1, 3); |
| add_native_method("sleep", Method::CT_ANY, _sleep_operator, 1, 1); | |
| } | } |
| // constructor & configurator | // constructor & configurator |