--- parser3/src/main/pa_request.C 2001/02/21 16:12:11 1.1 +++ parser3/src/main/pa_request.C 2001/03/18 13:22:07 1.43 @@ -1,81 +1,343 @@ /* -$Id: pa_request.C,v 1.1 2001/02/21 16:12:11 paf Exp $ + Parser + Copyright (c) 2001 ArtLebedev Group (http://www.artlebedev.com) + Author: Alexander Petrosyan (http://design.ru/paf) + + $Id: pa_request.C,v 1.43 2001/03/18 13:22:07 paf Exp $ */ +#include + #include "pa_request.h" -#include "compile.h" -#include "pa_context.h" +#include "pa_wwrapper.h" +#include "pa_common.h" +#include "pa_vclass.h" +#include "_root.h" +#include "_env.h" +#include "_table.h" +#include "pa_globals.h" +#include "pa_vint.h" +#include "pa_vmframe.h" +#include "pa_types.h" + +Request::Request(Pool& apool, + Info& ainfo, + String::Untaint_lang adefault_lang) : Pooled(apool), + stack(apool), + ROOT(apool), + env(apool), + form(apool), + request(apool, *this), + response(apool), + fclasses(apool), + fdefault_lang(adefault_lang), flang(adefault_lang), + info(ainfo), + fdefault_content_type(0) +{ + // root superclass, + // parent of all classes, + // operators holder + initialize_root_class(pool(), ROOT); + classes().put(*root_class_name, &ROOT); + // table class + classes().put(*table_class_name, table_class); +// table_class->set_name(*table_class_name); + + // env class + classes().put(*env_class_name, &env); + // form class + classes().put(*form_class_name, &form); + // request class + classes().put(*request_class_name, &request); + // response class + classes().put(*response_class_name, &response); +} + +void Request::core(Exception& system_exception, + const char *sys_auto_path1, + const char *sys_auto_path2) { + VStateless_class *main_class=0; + bool need_rethrow=false; Exception rethrow_me; + TRY { + char *auto_filespec=(char *)malloc(MAX_STRING); + + // load MAIN class, + // it consists of all the auto.p files we'd manage to find + // plus + // the file user requested us to process + // all located classes become children of one another, + // composing class we name 'MAIN' + + // loading system auto.p 1 + if(sys_auto_path1) { + strncpy(auto_filespec, sys_auto_path1, MAX_STRING-strlen(AUTO_FILE_NAME)); + strcat(auto_filespec, AUTO_FILE_NAME); + main_class=use_file( + auto_filespec, false/*ignore possible read problem*/, + main_class_name, main_class); + } + + // loading system auto.p 2 + if(sys_auto_path2) { + strncpy(auto_filespec, sys_auto_path2, MAX_STRING-strlen(AUTO_FILE_NAME)); + strcat(auto_filespec, AUTO_FILE_NAME); + main_class=use_file( + auto_filespec, false/*ignore possible read problem*/, + main_class_name, main_class); + } + + Value *element; + // $MAIN:limits hash used here, + // until someone with less privileges have overriden them + Value *limits=main_class?main_class->get_element(*limits_name):0; + // $limits.post_max_size default 10M + element=limits?limits->get_element(*post_max_size_name):0; + int value=element?(size_t)element->get_double():0; + int post_max_size=value?value:10*0x400*400; + + form.fill_fields(*this, post_max_size); + + // TODO: load site auto.p files, all assigned bases from upper dir + /*char *site_auto_file="Y:\\parser3\\src\\auto.p"; + main_class=use_file( + site_auto_file, false/*ignore possible read problem* /, + main_class_name, main_class);*/ + + // $MAIN:defaults + Value *defaults=main_class?main_class->get_element(*defaults_name):0; + // $defaults.content-type + element=defaults?defaults->get_element(*content_type_name):0; + response.fields().put(*content_type_name, fdefault_content_type=element); + + // there must be some auto.p + if(!main_class) + THROW(0,0, + 0, + "no 'auto.p' found (nither system nor any site's)"); + + // compiling requested file + main_class=use_file(info.path_translated, true/*don't ignore read problem*/, + main_class_name, main_class); + + // execute @main[] + const String *body_string=execute_method(*main_class, *main_method_name); + if(!body_string) + THROW(0,0, + 0, + "'"MAIN_METHOD_NAME"' method not found"); + + // store 'body' unless response already have one + response.fields().put_dont_replace(*body_name, NEW VString(*body_string)); + } + CATCH(e) { + TRY { + // we're returning not result, but error explanation + + // reset language to default + flang=fdefault_lang; + + // reset response + response.fields().clear(); -void Request::core() { - Exception exception; - Local_request_exception subst(*this, exception); - if(EXCEPTION_TRY(exception())) { - String name_RUN(pool()); name_RUN.APPEND_CONST("RUN"); - execute_MAIN(construct_class(name_RUN, load_and_compile_RUN()))); - } else { - Exception& e=exception(); - printf("operator error occured: %s\n", e.comment()); - const String *type=e.type(); - if(type) { - printf(" type: %s", type->cstr()); - const String *code=e.code(); - if(code) - printf(", code: %s", code->cstr()); - printf("\n"); + // this is what we'd return in $response:content-type + Value *content_type; + + // this is what we'd return in $response:body + const String *body_string=0; + + #define NEW_TAINTED(name, value) \ + name=NEW String(pool()); name->APPEND_TAINTED(value,0,0,0) + #define LOCAL_CONST(name, value) \ + String name(pool()); name.APPEND_CONST(value) + + if(main_class) { // we've managed to end up with some main_class + // maybe we'd be lucky enough as to report an error + // in a gracefull way... + if(Value *value=main_class->get_element(*exception_method_name)) + if(Junction *junction=value->get_junction()) + if(const Method *method=junction->method) { + // preparing to pass parameters to + // @exception[origin;source;comment;type;code] + VMethodFrame frame(pool(), *junction); + frame.set_self(*main_class); + + const String *problem_source=e.problem_source(); + // origin + LOCAL_CONST(origin_name, "origin"); + Value *origin_value=0; +#ifndef NO_STRING_ORIGIN + if(problem_source) { + const Origin& origin=problem_source->origin(); + if(origin.file) { + char *buf=(char *)malloc(MAX_STRING); + snprintf(buf, MAX_STRING, "%s(%d):", + origin.file, 1+origin.line); + String *NEW_TAINTED(origin_file_line, buf); + origin_value=NEW VString(*origin_file_line); + } + } +#endif + frame.store_param(origin_name, + origin_value?origin_value:NEW VUnknown(pool())); + + // source + LOCAL_CONST(source_name, "source"); + Value *source_value=0; + if(problem_source) { + String& problem_source_copy=*NEW String(*problem_source); + problem_source_copy.change_lang(flang); + source_value=NEW VString(problem_source_copy); + } + frame.store_param(source_name, + source_value?source_value:NEW VUnknown(pool())); + + // comment + LOCAL_CONST(comment_name, "comment"); + String *NEW_TAINTED(comment_value, e.comment()); + frame.store_param(comment_name, + NEW VString(*comment_value)); + + // type + LOCAL_CONST(type_name, "type"); + Value *type_value; + if(e.type()) { + String& type_copy=*NEW String(*e.type()); + type_copy.change_lang(flang); + type_value=NEW VString(type_copy); + } else + type_value=NEW VUnknown(pool()); + frame.store_param(type_name, type_value); + + // code + LOCAL_CONST(code_name, "code"); + Value *code_value; + if(e.code()) { + String& code_copy=*NEW String(*e.code()); + code_copy.change_lang(flang); + code_value=NEW VString(code_copy); + } else + code_value=NEW VUnknown(pool()); + frame.store_param(code_name, code_value); + + // future $response:content-type= + // content-type from any auto.p + content_type=fdefault_content_type; + // future $response:body= + // execute ^exception[origin;source;comment;type;code] + body_string=execute_method(frame, *method); + } + } + + if(!body_string) { // couldn't report an error beautifully? + // doing that ugly + + // make up result: $origin $source $comment $type $code + char *buf=(char *)malloc(MAX_STRING); + size_t printed=0; + const String *problem_source=e.problem_source(); + if(problem_source) { +#ifndef NO_STRING_ORIGIN + const Origin& origin=problem_source->origin(); + if(origin.file) + printed+=snprintf(buf+printed, MAX_STRING-printed, "%s(%d): ", + origin.file, 1+origin.line); +#endif + printed+=snprintf(buf+printed, MAX_STRING-printed, "'%s' ", + problem_source->cstr()); + } + printed+=snprintf(buf+printed, MAX_STRING-printed, "%s", + e.comment()); + const String *type=e.type(); + if(type) { + printed+=snprintf(buf+printed, MAX_STRING-printed, " type: %s", + type->cstr()); + const String *code=e.code(); + if(code) + printed+=snprintf(buf+printed, MAX_STRING-printed, ", code: %s", + code->cstr()); + } + String *error_string=NEW String(pool()); error_string->APPEND_CONST(buf); + + // future $response:content-type + String &content_type_value=*NEW String(pool()); + content_type_value.APPEND_CONST("text/plain"); + content_type=NEW VString(content_type_value); + // future $response:body + body_string=error_string; + } + + // store $response:content-type + response.fields().put(*content_type_name, content_type); + // store $response:body + response.fields().put(*body_name, NEW VString(*body_string)); } - const String *problem_source=e.problem_source(); - if(problem_source) { - const Origin& origin=problem_source->origin(); - printf(" '%s'\n", - problem_source->cstr()); - if(origin.file) - printf(" [%s:%d]", - origin.file, origin.line); - printf("\n"); + CATCH(e) { + // exception in request exception handler + // remember to rethrow it + rethrow_me=e; need_rethrow=true; } + END_CATCH } + END_CATCH // do not use pool() after this point - no exception handler set + // any throw() would try to use zero exception() pointer + + if(need_rethrow) // there were an exception set for us to rethrow? + system_exception._throw(rethrow_me.type(), rethrow_me.code(), + rethrow_me.problem_source(), + rethrow_me.comment()); + } -Array& Request::load_and_compile_RUN() { - char *file="c:\\temp\\test.p"; - char *source=file_read(pool(), file); - Array& compiled_methods=COMPILE(request, source, file); - return compiled_methods; +VStateless_class *Request::use_file( + const char *file, bool fail_on_read_problem, + const String *name, + VStateless_class *base_class) { + // TODO: обнаружить|решить cyclic dependences + char *source=file_read(pool(), file, fail_on_read_problem); + if(!source) + return base_class; + + return use_buf(source, file, 0/*new class*/, name, base_class); } -VClass *Request::construct_class(String& name, Array& compiled_methods) { - // create new 'name' vclass, add it to request's classes - Array immediate_parents(pool); - // TODO: immediate_parents=@PARENTS +VStateless_class *Request::use_buf( + const char *source, const char *file, + VStateless_class *aclass, const String *name, + VStateless_class *base_class) { + // compile loaded class + VStateless_class& cclass=COMPILE(source, aclass, name, base_class, file); - VClass *vclass=new(pool) VClass(pool, name, immediate_parents); - request.classes().put(name, vclass); - - for(int i=0; i(compiled_methods.quick_get(i)); - vclass->add_method(method.name, method); - } + // locate and execute possible @auto[] static method + execute_method(cclass, *auto_method_name, false /*no result needed*/); + return &cclass; } -char *Request::execute_MAIN(Value *class_RUN) { - // initialize contexts - root=self=rcontext=class_RUN; - wcontext=new(pool()) WContext(pool()); - - // locate @main code - String name_main(pool); - name_main.APPEND_CONST(MAIN_METHOD_NAME); - - Method *method_main=class_RUN->get_method(name_main); - if(!method_main) - request.exception().raise(0,0, - &class_RUN->name(), - "no 'main' method in class"); +void Request::fail_if_junction_(bool is, + Value& value, const String& method_name, char *msg) { - // execute! - execute(method_main->code); + // fail_if_junction(true, junction = fail + // fail_if_junction(false, not junction = fail + if((value.get_junction()!=0) ^ !is) + THROW(0, 0, + &method_name, + msg); +} + +char *Request::relative(const char *path, const char *file) { + char *result=(char *)malloc(strlen(path)+strlen(file)+1); + strcpy(result, path); + rsplit(result, PATH_DELIMITER_CHAR); + strcat(result, PATH_DELIMITER_STRING); + strcat(result, file); + return result; +} - // return chars - return wcontext.get_string()->cstr(); +char *Request::absolute(const char *name) { + if(name[0]=='/') { + char *result=(char *)malloc(strlen(info.document_root)+strlen(name)+1); + strcpy(result, info.document_root); + strcat(result, name); + return result; + } else + return relative(info.uri, name); }