--- parser3/src/main/pa_request.C 2001/03/14 17:15:07 1.35 +++ parser3/src/main/pa_request.C 2001/03/24 14:30:59 1.76 @@ -1,84 +1,105 @@ -/* - Parser +/** @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 1.35 2001/03/14 17:15:07 paf Exp $ + $Id: pa_request.C,v 1.76 2001/03/24 14:30:59 paf Exp $ */ -#include +#include "pa_config_includes.h" +#include "pa_sapi.h" +#include "pa_common.h" #include "pa_request.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" -#define NEW_STRING(name, value) name=NEW String(pool()); name->APPEND_CONST(value) -#define LOCAL_STRING(name, value) String name(pool()); name.APPEND_CONST(value) +/// $limits.post_max_size default 10M +const size_t MAX_POST_SIZE_DEFAULT=10*0x400*400; +// Request::Request(Pool& apool, Info& ainfo, - String::Untaint_lang alang) : Pooled(apool), + String::Untaint_lang adefault_lang) : Pooled(apool), stack(apool), - root_class(apool), - env_class(apool), - form_class(apool), + ROOT(apool), + env(apool), + form(apool), + request(apool, *this), + response(apool), + cookie(apool), fclasses(apool), - flang(alang), - info(ainfo) + fdefault_lang(adefault_lang), flang(adefault_lang), + info(ainfo), + default_content_type(0), + used_files(apool) { // root superclass, // parent of all classes, // operators holder - initialize_root_class(pool(), root_class); - classes().put(*root_class_name, &root_class); + 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_class); + classes().put(*env_class_name, &env); // form class - classes().put(*form_class_name, &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 add_header_attribute(const Hash::Key& aattribute, Hash::Val *ameaning, + void *info) { + String *attribute_to_exclude=static_cast(info); + if(aattribute==*attribute_to_exclude) + return; + + Value& lmeaning=*static_cast(ameaning); + Pool& pool=lmeaning.pool(); + + String attribute(pool); + SAPI::add_header_attribute(pool, + attribute.append(aattribute, String::UL_HEADER, true).cstr(), + attributed_meaning_to_string(lmeaning).cstr()); } -char *Request::core(const char *sys_auto_path1, - const char *sys_auto_path2) { - char *result; +/** + load MAIN class, execute @main. + MAIN class 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' +*/ +void Request::core(const char *root_auto_path, bool root_auto_fail, + const char *site_auto_path, bool site_auto_fail, + bool header_only) { 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); + // loading root auto.p + if(root_auto_path) { + strncpy(auto_filespec, root_auto_path, 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); - } - - // 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); - VStateless_class *main_class=use_file( - auto_filespec, false/*ignore possible read problem*/, - main_class_name); + auto_filespec, root_auto_fail, + main_class_name, main_class); } // $MAIN:limits hash used here, @@ -88,38 +109,117 @@ char *Request::core(const char *sys_auto // $limits.post_max_size default 10M element=limits?limits->get_element(*post_max_size_name):0; size_t value=element?(size_t)element->get_double():0; - size_t post_max_size=value?value:10*0x400*400; + size_t post_max_size=value?value:MAX_POST_SIZE_DEFAULT; - form_class.fill_fields(*this, post_max_size); + 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); + // loading site auto.p + if(site_auto_path) { + strncpy(auto_filespec, site_auto_path, MAX_STRING-strlen("/" AUTO_FILE_NAME)); + strcat(auto_filespec, "/" AUTO_FILE_NAME); + main_class=use_file( + auto_filespec, site_auto_fail, + main_class_name, main_class); + } - // there must be some auto.p - if(!main_class) - THROW(0,0, - 0, - "no 'auto.p' found (nither system nor any site's)"); + // loading auto.p files from document_root/.. + // to the one beside requested file. + // all assigned bases from upper dir + { + /* /document/root */ + char *monkey_auto_path= + (char *)malloc(strlen(info.path_translated)+strlen(AUTO_FILE_NAME)+1); + strcpy(monkey_auto_path, info.document_root); + + /* /requested/file.html */ + char *branches=(char *)malloc(strlen(info.path_translated)+1); + strcpy(branches, info.path_translated+strlen(info.document_root)); + char *next=branches; + + char *append_here=monkey_auto_path+strlen(monkey_auto_path); + size_t slash_auto_p_size=strlen("/" AUTO_FILE_NAME); + while(true) { + char *step=lsplit(&next, '/'); + if(next) { // not 'file.html' part + size_t step_size=strlen(step); + memcpy(append_here, step, step_size); + append_here+=step_size; + memcpy(append_here, "/" AUTO_FILE_NAME, slash_auto_p_size+1); + append_here++/* / */; + + main_class=use_file(monkey_auto_path, false/*ignore read problem*/, + main_class_name, main_class); + } else + break; + } + } // compiling requested file main_class=use_file(info.path_translated, true/*don't ignore read problem*/, main_class_name, main_class); + // $MAIN:defaults + Value *defaults=main_class?main_class->get_element(*defaults_name):0; + // value must be allocated on request's pool for that pool used on + // meaning constructing @see attributed_meaning_to_string + default_content_type=defaults? + defaults->get_element(*content_type_name) + :NEW VString(*NEW String(pool(), "text/html")); + // execute @main[] - result=execute_method(*main_class, *main_method_name); - if(!result) + 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, header_only); } - CATCH(e) { + CATCH(e) { // request handling problem + // we're returning not result, but error explanation TRY { - // we're returning not result, but error explanation - result=0; + // log the beast + const String *problem_source=e.problem_source(); + if(problem_source) + SAPI::log(pool(), +#ifndef NO_STRING_ORIGIN + "%s(%d): " +#endif + "'%s' %s [%s %s]", +#ifndef NO_STRING_ORIGIN + problem_source->origin().file?problem_source->origin().file:"global", + problem_source->origin().line, +#endif + problem_source->cstr(), + e.comment(), + e.type()?e.type()->cstr():"-", + e.code()?e.code()->cstr():"-" + ); + else + SAPI::log(pool(), + "%s [%s %s]", + e.comment(), + e.type()?e.type()->cstr():"-", + e.code()?e.code()->cstr():"-" + ); + + // 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... @@ -128,114 +228,150 @@ char *Request::core(const char *sys_auto if(const Method *method=junction->method) { // preparing to pass parameters to // @exception[origin;source;comment;type;code] - VMethodFrame *frame=NEW VMethodFrame(pool(), *junction); + VMethodFrame frame(pool(), *junction); + frame.set_self(*main_class); const String *problem_source=e.problem_source(); // origin - LOCAL_STRING(origin_name, "origin"); - VString *origin_value=0; + String origin_name(pool(), "origin"); + Value *origin_value=0; #ifndef NO_STRING_ORIGIN - 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_STRING(origin_file_line, buf); - origin_value=NEW VString(*origin_file_line); + 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); + frame.store_param(origin_name, + origin_value?origin_value:NEW VUnknown(pool())); // source - LOCAL_STRING(source_name, "source"); - frame->store_param(source_name, - NEW VString(*problem_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 - LOCAL_STRING(comment_name, "comment"); - String *NEW_STRING(comment_value, e.comment()); - frame->store_param(comment_name, + String comment_name(pool(), "comment"); + String *comment_value=NEW String(pool(), + e.comment(), true); + frame.store_param(comment_name, NEW VString(*comment_value)); // type - LOCAL_STRING(type_name, "type"); + String type_name(pool(), "type"); Value *type_value; - if(e.type()) - type_value=NEW VString(*e.type()); - else + 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); + frame.store_param(type_name, type_value); // code - LOCAL_STRING(code_name, "code"); + String code_name(pool(), "code"); Value *code_value; - if(e.code()) - code_value=NEW VString(*e.code()); - else + 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); + frame.store_param(code_name, code_value); - result=execute_method(*frame, *method); + // future $response:body= + // execute ^exception[origin;source;comment;type;code] + body_string=execute_method(frame, *method); } } - // couldn't report an error beautifully, doing that ugly - if(!result) { - result=(char *)malloc(MAX_STRING); - result[0]=0; + 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(result+printed, MAX_STRING-printed, "%s(%d): ", + printed+=snprintf(buf+printed, MAX_STRING-printed, "%s(%d): ", origin.file, 1+origin.line); #endif - printed+=snprintf(result+printed, MAX_STRING-printed, "'%s' ", + printed+=snprintf(buf+printed, MAX_STRING-printed, "'%s' ", problem_source->cstr()); } - printed+=snprintf(result+printed, MAX_STRING-printed, "%s", + printed+=snprintf(buf+printed, MAX_STRING-printed, "%s", e.comment()); const String *type=e.type(); if(type) { - printed+=snprintf(result+printed, MAX_STRING-printed, " type: %s", + printed+=snprintf(buf+printed, MAX_STRING-printed, " type: %s", type->cstr()); const String *code=e.code(); if(code) - printed+=snprintf(result+printed, MAX_STRING-printed, ", code: %s", + 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, header_only); } CATCH(e) { - // exception in exception handler occured - // probably totally out of memory - // can't say anything about such sad story - // would just return 0 - result=0; + // exception in request exception handler + // remember to rethrow it + rethrow_me=e; need_rethrow=true; } 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? + THROW(rethrow_me.type(), rethrow_me.code(), + rethrow_me.problem_source(), + rethrow_me.comment()); - return result; } -VStateless_class *Request::use_file( - const char *file, bool fail_on_read_problem, +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); + // cyclic dependence check + String& sfile=*NEW String(pool(), file); + if(used_files.get(sfile)) + return base_class; + used_files.put(sfile, (Hash::Val *)true); + + + char *source=file_read_text(pool(), file, fail_on_read_problem); if(!source) 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 *Request::use_buf(const char *source, const char *file, VStateless_class *aclass, const String *name, VStateless_class *base_class) { // compile loaded class @@ -246,11 +382,13 @@ VStateless_class *Request::use_buf( return &cclass; } -void Request::fail_if_junction_(bool is, - Value& value, const String& method_name, char *msg) { +/** + - 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, const char *msg) { - // fail_if_junction(true, junction = fail - // fail_if_junction(false, not junction = fail if((value.get_junction()!=0) ^ !is) THROW(0, 0, &method_name, @@ -260,8 +398,8 @@ void Request::fail_if_junction_(bool is, 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); + rsplit(result, '/'); + strcat(result, "/"); strcat(result, file); return result; } @@ -273,5 +411,34 @@ char *Request::absolute(const char *name strcat(result, name); return result; } else - return relative(info.request_uri, name); + return relative(info.path_translated, name); +} + +void Request::output_result(const String& body_string, bool header_only) { + // header: cookies + cookie.output_result(); + + // set default content-type + response.fields().put_dont_replace(*content_type_name, default_content_type); + + // prepare header: $response:fields without :body + response.fields().for_each(add_header_attribute, /*excluding*/ body_name); + + // prepare... + const char *body=body_string.cstr(); + size_t content_length=strlen(body); + + // prepare header: content-length + if(content_length) { // useful for redirecting [header "location: http://..."] + char content_length_cstr[MAX_NUMBER]; + snprintf(content_length_cstr, MAX_NUMBER, "%lu", content_length); + SAPI::add_header_attribute(pool(), "content-length", content_length_cstr); + } + + // send header + SAPI::send_header(pool()); + + // send body + if(!header_only) + SAPI::send_body(pool(), body, content_length); }