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| version 1.3, 2001/03/10 11:44:42 | version 1.92, 2001/04/03 07:20:53 |
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| Line 1 | Line 1 |
| /* | /** @file |
| $Id$ | Parser: request class main part. @see compile.C and execute.C. |
| Copyright (c) 2001 ArtLebedev Group (http://www.artlebedev.com) | |
| Author: Alexander Petrosyan <paf@design.ru> (http://design.ru/paf) | |
| $Id$ | |
| */ | */ |
| #include "pa_config_includes.h" | |
| #include "pa_sapi.h" | |
| #include "pa_common.h" | |
| #include "pa_request.h" | #include "pa_request.h" |
| #include "pa_wwrapper.h" | #include "pa_wwrapper.h" |
| #include "pa_common.h" | |
| #include "pa_vclass.h" | #include "pa_vclass.h" |
| #include "classes/_root.h" | #include "_root.h" |
| #include "classes/_env.h" | #include "_table.h" |
| #include "_file.h" | |
| #include <stdio.h> | #include "pa_globals.h" |
| #include "pa_vint.h" | |
| Request::Request(Pool& apool) : Pooled(apool), | #include "pa_vmframe.h" |
| #include "pa_types.h" | |
| #include "pa_vtable.h" | |
| #include "_random.h" | |
| #include "pa_vfile.h" | |
| /// $limits.post_max_size default 10M | |
| const size_t MAX_POST_SIZE_DEFAULT=10*0x400*400; | |
| /// content type of exception response, when no @MAIN:exception handler defined | |
| const char *UNHANDLED_EXCEPTION_CONTENT_TYPE="text/plain"; | |
| /// content type of response when no $MAIN:defaults.content-type defined | |
| const char *DEFAULT_CONTENT_TYPE="text/html"; | |
| // | |
| Request::Request(Pool& apool, | |
| Info& ainfo, | |
| String::Untaint_lang adefault_lang) : Pooled(apool), | |
| stack(apool), | stack(apool), |
| root_class(apool), | ROOT(apool), |
| env_class(apool), | env(apool), |
| form(apool), | |
| request(apool, *this), | |
| response(apool), | |
| cookie(apool), | |
| fclasses(apool), | fclasses(apool), |
| fclasses_array(apool), | fdefault_lang(adefault_lang), flang(adefault_lang), |
| lang(String::Untaint_lang::HTML_TYPO) | info(ainfo), |
| used_files(apool), | |
| default_content_type(0), | |
| mime_types(0) | |
| { | { |
| // root class | // root superclass, |
| initialize_root_class(pool(), root_class); | |
| // adding root superclass, | |
| // parent of all classes, | // parent of all classes, |
| // operators holder | // operators holder |
| String ROOT(pool()); ROOT.APPEND_CONST(ROOT_NAME); | initialize_root_class(pool(), ROOT); |
| classes().put(ROOT, &root_class); | classes().put(*root_class_name, &ROOT); |
| // table class | |
| classes().put(*table_class_name, table_class); | |
| // file class | |
| classes().put(*file_class_name, file_class); | |
| // random class | |
| classes().put(*random_class_name, random_class); | |
| // env class | // env class |
| initialize_env_class(pool(), env_class); | classes().put(*env_class_name, &env); |
| String ENV(pool()); ENV.APPEND_CONST(ENV_NAME); | // form class |
| classes().put(ENV, &env_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<String *>(info); | |
| if(aattribute==*attribute_to_exclude) | |
| return; | |
| Value& lmeaning=*static_cast<Value *>(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()); | |
| } | } |
| void Request::core() { | /** |
| 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' | |
| @test post-process | |
| */ | |
| 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 { | TRY { |
| char *file="Y:\\parser3\\src\\test.p"; | char *auto_filespec=(char *)malloc(MAX_STRING); |
| String RUN(pool()); RUN.APPEND_CONST(RUN_NAME); | |
| use(file, &RUN); | // loading root auto.p |
| if(root_auto_path) { | |
| String& filespec=*NEW String(pool()); | |
| filespec.APPEND_CLEAN(root_auto_path, 0, "root_auto", 0); | |
| filespec.APPEND_CONST("/" AUTO_FILE_NAME); | |
| main_class=use_file( | |
| filespec, root_auto_fail, | |
| main_class_name, main_class); | |
| } | |
| // $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 | |
| Value *element=limits?limits->get_element(*post_max_size_name):0; | |
| size_t value=element?(size_t)element->as_double():0; | |
| size_t post_max_size=value?value:MAX_POST_SIZE_DEFAULT; | |
| form.fill_fields(*this, post_max_size); | |
| } | |
| char *result=execute_MAIN(); | // filling cookies |
| printf("result-----------------\n%sEOF----------------\n", result); | cookie.fill_fields(*this); |
| // loading site auto.p | |
| if(site_auto_path) { | |
| String& filespec=*NEW String(pool()); | |
| filespec.APPEND_CLEAN(site_auto_path, 0, "site_auto", 0); | |
| filespec.APPEND_CONST("/" AUTO_FILE_NAME); | |
| main_class=use_file( | |
| filespec, site_auto_fail, | |
| main_class_name, main_class); | |
| } | |
| // loading auto.p files from document_root/.. | |
| // to the one beside requested file. | |
| // all assigned bases from upper dir | |
| { | |
| /* /document/root */ | |
| char *file_spec= | |
| (char *)malloc(strlen(info.path_translated)+strlen(AUTO_FILE_NAME)+1); | |
| size_t document_root_size=strlen(info.document_root); | |
| if(info.document_root[document_root_size-1]=='/') | |
| document_root_size--; | |
| memcpy(file_spec, info.document_root, document_root_size); | |
| /* /requested/file.html */ | |
| char *branches=(char *)malloc(strlen(info.path_translated)+1); | |
| strcpy(branches, info.path_translated+document_root_size); | |
| char *next=branches; | |
| char *append_here=file_spec+document_root_size; | |
| 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++/* / */; | |
| String& sfile_spec=*NEW String(pool()); | |
| sfile_spec.APPEND_CLEAN(file_spec, 0, "scanned", 0); | |
| main_class=use_file(sfile_spec, false/*ignore read problem*/, | |
| main_class_name, main_class); | |
| } else | |
| break; | |
| } | |
| } | |
| // compiling requested file | |
| String& spath_translated=*NEW String(pool()); | |
| spath_translated.APPEND_CLEAN(info.path_translated, 0, "user-request", 0); | |
| main_class=use_file(spath_translated, true/*don't ignore read problem*/, | |
| main_class_name, main_class); | |
| // $MAIN:DEFAULTS | |
| Value *defaults=main_class->get_element(*defaults_name); | |
| // 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):0; | |
| if(Value *element=main_class->get_element(*html_typo_name)) | |
| if(Table *table=element->get_table()) | |
| pool().set_tag(table); | |
| // $MAIN:MIME-TYPES | |
| if(Value *element=main_class->get_element(*mime_types_name)) | |
| if(Table *table=element->get_table()) | |
| mime_types=table; | |
| // 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"); | |
| VString body_vstring_before_post_process(*body_string); | |
| VString *body_vstring_after_post_process=&body_vstring_before_post_process; | |
| // post-process | |
| if(Value *value=main_class->get_element(*post_process_method_name)) | |
| if(Junction *junction=value->get_junction()) | |
| if(const Method *method=junction->method) { | |
| // preparing to pass parameters to | |
| // @post-process[data] | |
| VMethodFrame frame(pool(), *junction); | |
| frame.set_self(*main_class); | |
| frame.store_param(method->name, | |
| &body_vstring_before_post_process); | |
| body_vstring_after_post_process= | |
| NEW VString(*execute_method(frame, *method)); | |
| } | |
| const VFile *body_file=body_vstring_after_post_process->as_vfile(); | |
| // extract response body | |
| Value *body_value=static_cast<Value *>( | |
| response.fields().get(*body_name)); | |
| if(body_value) // there is some $request.body | |
| body_file=body_value->as_vfile(); | |
| // OK. write out the result | |
| output_result(*body_file, header_only); | |
| } | } |
| CATCH(e) { | CATCH(e) { // request handling problem |
| printf("\nERROR: "); | // we're returning not result, but error explanation |
| const String *problem_source=e.problem_source(); | TRY { |
| if(problem_source) { | // log the beast |
| const Origin& origin=problem_source->origin(); | const String *problem_source=e.problem_source(); |
| if(origin.file) | if(problem_source) |
| printf("%s(%d): ", | SAPI::log(pool(), |
| origin.file, 1+origin.line); | #ifndef NO_STRING_ORIGIN |
| printf("'%s' ", | "%s(%d): " |
| problem_source->cstr()); | #endif |
| } | "'%s' %s [%s %s]", |
| printf("%s", e.comment()); | #ifndef NO_STRING_ORIGIN |
| const String *type=e.type(); | problem_source->origin().file?problem_source->origin().file:"global", |
| if(type) { | problem_source->origin().line, |
| printf(" type: %s", type->cstr()); | #endif |
| const String *code=e.code(); | problem_source->cstr(), |
| if(code) | e.comment(), |
| printf(", code: %s", code->cstr()); | 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... | |
| 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 | |
| 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(method->name, | |
| origin_value?origin_value:NEW VUnknown(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(method->name, | |
| source_value?source_value:NEW VUnknown(pool())); | |
| // comment | |
| String *comment_value=NEW String(pool(), | |
| e.comment(), true); | |
| frame.store_param(method->name, | |
| NEW VString(*comment_value)); | |
| // 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(method->name, type_value); | |
| // 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(method->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(), UNHANDLED_EXCEPTION_CONTENT_TYPE))); | |
| // future $response:body | |
| body_string=NEW String(pool(), buf); | |
| } | |
| const VString body_vstring(*body_string); | |
| const VFile *body_file=body_vstring.as_vfile(); | |
| // ERROR. write it out | |
| output_result(*body_file, header_only); | |
| } | } |
| printf("\n"); | CATCH(e) { |
| // 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) // were there an exception for us to rethrow? | |
| THROW(rethrow_me.type(), rethrow_me.code(), | |
| rethrow_me.problem_source(), | |
| rethrow_me.comment()); | |
| } | } |
| void Request::use(char *file, String *name) { | VStateless_class *Request::use_file(const String& file_spec, bool fail_on_read_problem, |
| // TODO: обнаружить|решить cyclic dependences | const String *name, |
| char *source=file_read(pool(), file); | VStateless_class *base_class) { |
| // cyclic dependence check | |
| if(used_files.get(file_spec)) | |
| return base_class; | |
| used_files.put(file_spec, (Hash::Val *)true); | |
| char *source=file_read_text(pool(), file_spec, fail_on_read_problem); | |
| if(!source) | if(!source) |
| THROW(0,0, | return base_class; |
| 0, | |
| "use: can not read '%s' file", file); | return use_buf(source, file_spec.cstr(), 0/*new class*/, name, base_class); |
| } | |
| COMPILE(source, name, file); | |
| // TODO: запустить @STATIC[], если есть | VStateless_class *Request::use_buf(const char *source, const char *file, |
| VStateless_class *aclass, const String *name, | |
| // if(alias) | VStateless_class *base_class) { |
| //classes().put(*alias, &vclass); | // compile loaded class |
| } | VStateless_class& cclass=COMPILE(source, aclass, name, base_class, file); |
| char *Request::execute_MAIN() { | // locate and execute possible @auto[] static method |
| // locate class with @main & it's code | execute_method(cclass, *auto_method_name, false /*no result needed*/); |
| String name_main(pool()); | return &cclass; |
| name_main.APPEND_CONST(MAIN_METHOD_NAME); | } |
| // looking for latest known @main | /** |
| for(int i=classes_array().size(); --i>=0;) { | - fail_if_junction(true, junction = fail |
| VClass *vclass=static_cast<VClass *>(classes_array().get(i)); | - fail_if_junction(false, not junction = fail |
| Value *main=vclass->get_element(name_main); | */ |
| if(main) { // found some 'main' element | void Request::fail_if_junction_(bool is, Value& value, |
| Junction *junction=main->get_junction(); | const String& method_name, const char *msg) { |
| if(junction) {// it even has junction! | |
| const Method *method=junction->method; | if((value.get_junction()!=0) ^ !is) |
| if(method) { // and junction is method-junction! call it | THROW(0, 0, |
| // initialize contexts | &method_name, |
| root=rcontext=self=vclass; | msg); |
| wcontext=NEW WWrapper(pool(), vclass, false /* not constructing */); | } |
| // execute! | const String& Request::relative(const char *apath, const String& relative_name) { |
| execute(*method->parser_code); | int lpath_buf_size=strlen(apath)+1; |
| char *lpath=(char *)malloc(lpath_buf_size); | |
| // return chars | memcpy(lpath, apath, lpath_buf_size); |
| return wcontext->get_string()->cstr(); | rsplit(lpath, '/'); |
| } | String& result=*NEW String(pool(), lpath); |
| } | result.APPEND_CONST("/"); |
| } | result.append(relative_name, String::UL_PASS_APPENDED); |
| return result; | |
| } | |
| const String& Request::absolute(const String& relative_name) { | |
| char *relative_name_cstr=relative_name.cstr(); | |
| if(relative_name_cstr[0]=='/') { | |
| String& result=*NEW String(pool(), info.document_root); | |
| result.append(relative_name, String::UL_PASS_APPENDED); | |
| return result; | |
| } else | |
| return relative(info.path_translated, relative_name); | |
| } | |
| void Request::output_result(const VFile& body_file, bool header_only) { | |
| // header: cookies | |
| cookie.output_result(); | |
| // set content-type | |
| if(String *body_file_content_type=static_cast<String *>( | |
| body_file.fields().get(*vfile_mime_type_name))) { | |
| // body file content type | |
| response.fields().put(*content_type_name, body_file_content_type); | |
| } else { | |
| // default content type | |
| response.fields().put_dont_replace(*content_type_name, | |
| default_content_type?default_content_type | |
| :NEW VString(*NEW String(pool(), DEFAULT_CONTENT_TYPE))); | |
| } | |
| // content-disposition | |
| if(VString *vfile_name=static_cast<VString *>(body_file.fields().get(*name_name))) { | |
| VHash& vhash=*NEW VHash(pool()); | |
| vhash.hash().put(*content_disposition_filename_name, vfile_name); | |
| response.fields().put(*content_disposition_name, &vhash); | |
| } | } |
| // prepare header: $response:fields without :body | |
| response.fields().for_each(add_header_attribute, /*excluding*/ body_name); | |
| // prepare... | |
| const void *body=body_file.value_ptr(); | |
| size_t content_length=body_file.value_size(); | |
| // 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()); | |
| THROW(0,0, | // send body |
| 0, | if(!header_only) |
| "'"MAIN_METHOD_NAME"' method not found"); | SAPI::send_body(pool(), body, content_length); |
| return 0; | |
| } | } |