--- parser3/src/main/pa_request.C 2001/03/10 11:44:42 1.3 +++ parser3/src/main/pa_request.C 2001/03/19 22:11:09 1.60 @@ -1,116 +1,378 @@ -/* -$Id: pa_request.C,v 1.3 2001/03/10 11:44:42 paf Exp $ +/** @file + Parser: request class main part. @see compile.C and execute.C. + + Copyright (c) 2001 ArtLebedev Group (http://www.artlebedev.com) + + Author: Alexander Petrosyan (http://design.ru/paf) + + $Id: pa_request.C,v 1.60 2001/03/19 22:11:09 paf Exp $ */ +#include + +#include "pa_common.h" #include "pa_request.h" #include "pa_wwrapper.h" -#include "pa_common.h" #include "pa_vclass.h" -#include "classes/_root.h" -#include "classes/_env.h" - -#include - -Request::Request(Pool& apool) : Pooled(apool), +#include "_root.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_class(apool), - env_class(apool), + ROOT(apool), + env(apool), + form(apool), + request(apool, *this), + response(apool), + cookie(apool), fclasses(apool), - fclasses_array(apool), - lang(String::Untaint_lang::HTML_TYPO) + fdefault_lang(adefault_lang), flang(adefault_lang), + info(ainfo), + fdefault_content_type(0) { - // root class - initialize_root_class(pool(), root_class); - // adding root superclass, + // root superclass, // parent of all classes, // operators holder - String ROOT(pool()); ROOT.APPEND_CONST(ROOT_NAME); - classes().put(ROOT, &root_class); + initialize_root_class(pool(), ROOT); + classes().put(*root_class_name, &ROOT); + // table class + classes().put(*table_class_name, table_class); // env class - initialize_env_class(pool(), env_class); - String ENV(pool()); ENV.APPEND_CONST(ENV_NAME); - classes().put(ENV, &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); + // cookie class + classes().put(*cookie_class_name, &cookie); +} + +static void output_response_attribute(const Hash::Key& aattribute, Hash::Val *ameaning, + void *info) { + String *attribute_to_exclude=static_cast(info); + if(aattribute==*attribute_to_exclude) + return; + + String attribute(aattribute.pool()); + attribute.append(aattribute, String::Untaint_lang::HEADER, true); + + (*service_funcs.output_header_attribute)( + attribute.cstr(), + attributed_meaning_string(static_cast(ameaning)).cstr()); } -void Request::core() { +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 *file="Y:\\parser3\\src\\test.p"; - String RUN(pool()); RUN.APPEND_CONST(RUN_NAME); - use(file, &RUN); + 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); + } - char *result=execute_MAIN(); - printf("result-----------------\n%sEOF----------------\n", result); + 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); + cookie.fill_fields(*this); + + // 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; + fdefault_content_type=defaults?defaults->get_element(*content_type_name):0; + + // 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"); + + // extract response body + Value *body_value=static_cast( + response.fields().get(*body_name)); + if(body_value) // there is some $request.body + body_string=&body_value->as_string();// TODO: IMAGE&FILE + + // OK. write out the result + output_result(*body_string); } CATCH(e) { - printf("\nERROR: "); - const String *problem_source=e.problem_source(); - if(problem_source) { - const Origin& origin=problem_source->origin(); - if(origin.file) - printf("%s(%d): ", - origin.file, 1+origin.line); - printf("'%s' ", - problem_source->cstr()); + TRY { + // we're returning not result, but error explanation + + // reset language to default + flang=fdefault_lang; + + // reset response + response.fields().clear(); + + // this is what we'd return in $response:body + const String *body_string=0; + + 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 + String origin_name(pool(), "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 *origin_file_line=NEW String(pool(), + buf, true); + origin_value=NEW VString(*origin_file_line); + } + } +#endif + frame.store_param(origin_name, + origin_value?origin_value:NEW VUnknown(pool())); + + // source + String source_name(pool(), "source"); + Value *source_value=0; + if(problem_source) { + String& problem_source_copy=*NEW String(pool()); + problem_source_copy.append(*problem_source, + flang, true); + source_value=NEW VString(problem_source_copy); + } + frame.store_param(source_name, + source_value?source_value:NEW VUnknown(pool())); + + // comment + String comment_name(pool(), "comment"); + String *comment_value=NEW String(pool(), + e.comment(), true); + frame.store_param(comment_name, + NEW VString(*comment_value)); + + // type + String type_name(pool(), "type"); + Value *type_value; + if(e.type()) { + String& type_copy=*NEW String(pool()); + type_value=NEW VString(type_copy.append(*e.type(), + flang, true)); + } else + type_value=NEW VUnknown(pool()); + frame.store_param(type_name, type_value); + + // code + String code_name(pool(), "code"); + Value *code_value; + if(e.code()) { + String& code_copy=*NEW String(pool()); + code_value=NEW VString(code_copy.append(*e.code(), + flang, true)); + } else + code_value=NEW VUnknown(pool()); + frame.store_param(code_name, code_value); + + // 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()); + } + + // future $response:content-type + response.fields().put(*content_type_name, + NEW VString(*NEW String(pool(), "text/plain"))); + // future $response:body + body_string=NEW String(pool(), buf); + } + + // ERROR. write it out + output_result(*body_string); } - printf("%s", 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()); + CATCH(e) { + // exception in request exception handler + // remember to rethrow it + rethrow_me=e; need_rethrow=true; } - printf("\n"); + END_CATCH } - 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()); + } -void Request::use(char *file, String *name) { - // TODO: обнаружить|решить cyclic dependences - char *source=file_read(pool(), file); +/// @todo find|solve cyclic dependences +VStateless_class *Request::use_file( + const char *file, bool fail_on_read_problem, + const String *name, + VStateless_class *base_class) { + char *source=file_read(pool(), file, fail_on_read_problem); if(!source) - THROW(0,0, - 0, - "use: can not read '%s' file", file); - - COMPILE(source, name, file); - // TODO: запустить @STATIC[], если есть - -// if(alias) - //classes().put(*alias, &vclass); -} - -char *Request::execute_MAIN() { - // locate class with @main & it's code - String name_main(pool()); - name_main.APPEND_CONST(MAIN_METHOD_NAME); - - // looking for latest known @main - for(int i=classes_array().size(); --i>=0;) { - VClass *vclass=static_cast(classes_array().get(i)); - Value *main=vclass->get_element(name_main); - if(main) { // found some 'main' element - Junction *junction=main->get_junction(); - if(junction) {// it even has junction! - const Method *method=junction->method; - if(method) { // and junction is method-junction! call it - // initialize contexts - root=rcontext=self=vclass; - wcontext=NEW WWrapper(pool(), vclass, false /* not constructing */); - - // execute! - execute(*method->parser_code); - - // return chars - return wcontext->get_string()->cstr(); - } - } - } - } + return base_class; + + return use_buf(source, file, 0/*new class*/, name, base_class); +} + +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); + + // locate and execute possible @auto[] static method + execute_method(cclass, *auto_method_name, false /*no result needed*/); + return &cclass; +} + +/** + - fail_if_junction(true, junction = fail + - fail_if_junction(false, not junction = fail +*/ +void Request::fail_if_junction_(bool is, + Value& value, const String& method_name, char *msg) { + + 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; +} + +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.path_translated, name); +} + +void Request::output_result(const String& body_string) { + // header: cookies + cookie.output_result(); - THROW(0,0, - 0, - "'"MAIN_METHOD_NAME"' method not found"); - return 0; + // set default content-type + if(fdefault_content_type) + response.fields().put_dont_replace(*content_type_name, fdefault_content_type); + + // header: $response:fields without :body + response.fields().foreach(output_response_attribute, /*excluding*/ body_name); + + // prepare + const char *body=body_string.cstr(); + size_t content_length=strlen(body); + + // header: content-length + char content_length_cstr[MAX_NUMBER]; + snprintf(content_length_cstr, MAX_NUMBER, "%d", content_length); + (*service_funcs.output_header_attribute)("content-length", content_length_cstr); + // body + (*service_funcs.output_body)(body, content_length); }