--- parser3/src/main/pa_request.C 2001/03/24 19:12:20 1.78 +++ parser3/src/main/pa_request.C 2001/08/07 13:23:33 1.149 @@ -4,80 +4,147 @@ Copyright (c) 2001 ArtLebedev Group (http://www.artlebedev.com) Author: Alexander Petrosyan (http://design.ru/paf) - - $Id: pa_request.C,v 1.78 2001/03/24 19:12:20 paf Exp $ */ +static const char *RCSId="$Id: pa_request.C,v 1.149 2001/08/07 13:23:33 parser Exp $"; #include "pa_config_includes.h" +#include "pcre.h" +#include "internal.h" +extern "C" unsigned char pcre_default_tables[]; // pcre/chartables.c + #include "pa_sapi.h" #include "pa_common.h" #include "pa_request.h" #include "pa_wwrapper.h" #include "pa_vclass.h" -#include "_root.h" -#include "_table.h" #include "pa_globals.h" #include "pa_vint.h" -#include "pa_vmframe.h" +#include "pa_vmethod_frame.h" #include "pa_types.h" #include "pa_vtable.h" +#include "pa_vfile.h" +#include "pa_dictionary.h" + +/// content type of exception response, when no @MAIN:exception handler defined +const char *UNHANDLED_EXCEPTION_CONTENT_TYPE="text/plain"; -/// $limits.post_max_size default 10M -const size_t MAX_POST_SIZE_DEFAULT=10*0x400*400; +/// content type of response when no $MAIN:defaults.content-type defined +const char *DEFAULT_CONTENT_TYPE="text/html"; +const char *ORIGINS_CONTENT_TYPE="text/plain"; + +Methoded *MOP_create(Pool&); // Request::Request(Pool& apool, Info& ainfo, String::Untaint_lang adefault_lang) : Pooled(apool), stack(apool), - ROOT(apool), + OP(*MOP_create(apool)), env(apool), form(apool), + math(apool), request(apool, *this), response(apool), cookie(apool), fclasses(apool), fdefault_lang(adefault_lang), flang(adefault_lang), info(ainfo), + post_data(0), post_size(0), + used_files(apool), default_content_type(0), - used_files(apool) + mime_types(0), + main_class(0), + connection(0), + pcre_tables(0), + classes_conf(apool), + anti_endless_execute_recoursion(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); + /// directly used + // operators + OP.register_directly_used(*this); + // classes: + // table, file, random, mail, image, ... + methoded_array->register_directly_used(*this); + /// methodless // env class - classes().put(*env_class_name, &env); - // form class - classes().put(*form_class_name, &form); + classes().put(*NEW String(pool(), ENV_CLASS_NAME), &env); // request class - classes().put(*request_class_name, &request); - // response class - classes().put(*response_class_name, &response); + classes().put(*NEW String(pool(), REQUEST_CLASS_NAME), &request); // cookie class - classes().put(*cookie_class_name, &cookie); + classes().put(*NEW String(pool(), COOKIE_CLASS_NAME), &cookie); + + /// methoded + // response class + classes().put(response.get_class()->name(), &response); + + /// bases used + // form class + classes().put(form.get_class()->base()->name(), &form); + // math class + classes().put(math.get_class()->base()->name(), &math); } -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) +static void element2ctypes(unsigned char *tables, + Value& ctype, const String& name, + unsigned char bit, + int group_offset=-1, + bool skip_ws=true) { + Value *value=ctype.get_element(name); + if(!value) 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()); + unsigned char *ctypes_table=tables+ctypes_offset; + const unsigned char *cstr= + (const unsigned char *)value->as_string().cstr(String::UL_AS_IS); + for(; *cstr; cstr++) { + unsigned char c=*cstr; + if(skip_ws && (c=='\n' || c=='\t' || c==' ')) + continue; + ctypes_table[c]|=bit; + + if(group_offset>=0) + tables[cbits_offset+group_offset+c/8] |= 1 << (c%8); + } } +static void cstr2ctypes(unsigned char *tables, const unsigned char *cstr, + unsigned char bit) { + unsigned char *ctypes_table=tables+ctypes_offset; + ctypes_table[0]=bit; + for(; *cstr; cstr++) { + unsigned char c=*cstr; + ctypes_table[c]|=bit; + } +} +static void prepare_case_tables(unsigned char *tables) { + unsigned char *lcc_table=tables+lcc_offset; + unsigned char *fcc_table=tables+fcc_offset; + for(int i=0; i<0x100; i++) + lcc_table[i]=fcc_table[i]=i; +} +static void element2case(unsigned char *tables, Value& ctype, const String& name) { + Value *value=ctype.get_element(name); + if(!value) + return; + unsigned char *lcc_table=tables+lcc_offset; + unsigned char *fcc_table=tables+fcc_offset; + const unsigned char *cstr= + (const unsigned char *)value->as_string().cstr(String::UL_AS_IS); + unsigned char from=0; + for(; *cstr; cstr++) { + unsigned char c=*cstr; + if(c=='\n' || c=='\t' || c==' ') + continue; + if(from) { + lcc_table[from]=c; + fcc_table[from]=c; fcc_table[c]=from; + from=0; + } else + from=c; + } +} /** load MAIN class, execute @main. MAIN class consists of all the auto.p files we'd manage to find @@ -89,7 +156,7 @@ static void add_header_attribute(const H 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; + //_asm { int 3 } bool need_rethrow=false; Exception rethrow_me; TRY { char *auto_filespec=(char *)malloc(MAX_STRING); @@ -97,35 +164,27 @@ void Request::core(const char *root_auto // loading root auto.p if(root_auto_path) { String& filespec=*NEW String(pool()); - filespec.APPEND(root_auto_path, 0, "root_auto", 0); + filespec.APPEND_CLEAN(root_auto_path, 0, "root_auto", 0); filespec.APPEND_CONST("/" AUTO_FILE_NAME); main_class=use_file( - filespec, root_auto_fail, + filespec, + true/*ignore class_path*/, root_auto_fail, main_class_name, main_class); } - // $MAIN:limits hash used here, + // configure root options // 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->get_double():0; - size_t post_max_size=value?value:MAX_POST_SIZE_DEFAULT; - - form.fill_fields(*this, post_max_size); - } - - // filling cookies - cookie.fill_fields(*this); + OP.configure_admin(*this); + methoded_array->configure_admin(*this); // loading site auto.p if(site_auto_path) { String& filespec=*NEW String(pool()); - filespec.APPEND(site_auto_path, 0, "site_auto", 0); + filespec.APPEND_CLEAN(site_auto_path, 0, "site_auto", 0); filespec.APPEND_CONST("/" AUTO_FILE_NAME); main_class=use_file( - filespec, site_auto_fail, + filespec, + true/*ignore class_path*/, site_auto_fail, main_class_name, main_class); } @@ -133,75 +192,147 @@ void Request::core(const char *root_auto // 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); - strcpy(file_spec, 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=file_spec+strlen(file_spec); - 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(file_spec, 0, "scanned", 0); - main_class=use_file(sfile_spec, false/*ignore read problem*/, - main_class_name, main_class); - } else - break; + Array ladder(pool()); + const char *after=info.path_translated; + size_t drlen=strlen(info.document_root); + if(memcmp(after, info.document_root, drlen)==0) { + after+=drlen; + if(after[-1]=='/') + --after; + } + + while(const char *before=strchr(after, '/')) { + String& step=*NEW String(pool()); + if(after!=info.path_translated) { + step.APPEND_CLEAN( + info.path_translated, before+1/* / */-info.path_translated, + "path-translated-scanned", ladder.size()); + step << AUTO_FILE_NAME; + ladder+=&step; + } + after=before+1; + } + for(int i=0; iconfigure_user(*this); + + // $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) - :NEW VString(*NEW String(pool(), "text/html")); - if(Value *element=main_class->get_element(*html_typo_name)) - if(VTable *vtable=element->get_vtable()) - pool().set_tag(&vtable->table()); + default_content_type=defaults?defaults->get_element(*content_type_name):0; + if(Value *element=main_class->get_element(*user_html_name)) + if(Table *table=element->get_table()) + pool().set_tag(NEW Dictionary(*table)); + + // $MAIN:MIME-TYPES + if(Value *element=main_class->get_element(*mime_types_name)) + if(Table *table=element->get_table()) + mime_types=table; + + /* + $MAIN:CTYPE[ + $.white-space[ + ^#09^#0A^#0B^#0C^#0D^#20] + $.digit[ + 0123456789] + $.hex-digit[ + 0123456789ABCDEFabcdef] + $.letter[ + ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz] + $.word[ + 0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz] + + $.lowercase[ + AaBbCcDdEeFfGgHhIiJjKkLlMmNnOoPpQqRrSsTtUuVvWwXxYyZz] + ] + */ + if(Value *ctype=main_class->get_element(*ctype_name)) { + // lowcase, flipcase, bits digit+word+whitespace, masks + pcre_tables=(unsigned char *)calloc(tables_length); + prepare_case_tables(pcre_tables); + + element2ctypes(pcre_tables, *ctype, *ctype_white_space_name, ctype_space, cbit_space, false); + element2ctypes(pcre_tables, *ctype, *ctype_digit_name, ctype_digit, cbit_digit); + element2ctypes(pcre_tables, *ctype, *ctype_hex_digit_name, ctype_xdigit); + element2ctypes(pcre_tables, *ctype, *ctype_letter_name, ctype_letter); + element2ctypes(pcre_tables, *ctype, *ctype_word_name, ctype_word, cbit_word); + cstr2ctypes(pcre_tables, (const unsigned char *)"*+?{^.$|()[", ctype_meta); + + element2case(pcre_tables, *ctype, *ctype_lowercase_name); + } else + pcre_tables=pcre_default_tables; + + // filling form fields + form.fill_fields(*this); + + // filling cookies + cookie.fill_fields(*this); // execute @main[] - const String *body_string=execute_method(*main_class, *main_method_name); + const String *body_string=execute_virtual_method( + *main_class, *main_method_name); if(!body_string) THROW(0,0, - 0, - "'"MAIN_METHOD_NAME"' method not found"); + 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; + + // @postprocess + 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 + // @postprocess[data] + VMethodFrame frame(pool(), value->name(), *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)); + } + + bool origins_mode=main_class->get_element(*origins_mode_name)!=0; + + const VFile *body_file=body_vstring_after_post_process->as_vfile( + String::UL_UNSPECIFIED, origins_mode); // 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 + if(body_value) // there is some $response.body + body_file=body_value->as_vfile(); + else if(origins_mode) + response.fields().put(*content_type_name, + NEW VString(*NEW String(pool(), ORIGINS_CONTENT_TYPE))); // OK. write out the result - output_result(*body_string, header_only); + output_result(*body_file, header_only); } CATCH(e) { // request handling problem // we're returning not result, but error explanation TRY { // log the beast const String *problem_source=e.problem_source(); - if(problem_source) + if(problem_source && problem_source->size()) SAPI::log(pool(), #ifndef NO_STRING_ORIGIN "%s(%d): " @@ -211,21 +342,23 @@ void Request::core(const char *root_auto problem_source->origin().file?problem_source->origin().file:"global", problem_source->origin().line, #endif - problem_source->cstr(), + problem_source->cstr(String::UL_AS_IS), e.comment(), - e.type()?e.type()->cstr():"-", - e.code()?e.code()->cstr():"-" + e.type()?e.type()->cstr(String::UL_AS_IS):"-", + e.code()?e.code()->cstr(String::UL_AS_IS):"-" ); else SAPI::log(pool(), "%s [%s %s]", e.comment(), - e.type()?e.type()->cstr():"-", - e.code()?e.code()->cstr():"-" + e.type()?e.type()->cstr(String::UL_AS_IS):"-", + e.code()?e.code()->cstr(String::UL_AS_IS):"-" ); // reset language to default flang=fdefault_lang; + if(flang==String::UL_USER_HTML) + flang=String::UL_HTML; // no _ & Co conversions in @exception[params] // reset response response.fields().clear(); @@ -241,69 +374,64 @@ void Request::core(const char *root_auto if(const Method *method=junction->method) { // preparing to pass parameters to // @exception[origin;source;comment;type;code] - VMethodFrame frame(pool(), *junction); + VMethodFrame frame(pool(), value->name(), *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) { + if(problem_source && problem_source->size()) { const Origin& origin=problem_source->origin(); if(origin.file) { char *buf=(char *)malloc(MAX_STRING); - snprintf(buf, MAX_STRING, "%s(%d):", + size_t buf_size=snprintf(buf, MAX_STRING, "%s(%d):", origin.file, 1+origin.line); String *origin_file_line=NEW String(pool(), - buf, true); + buf, buf_size, true); origin_value=NEW VString(*origin_file_line); } } #endif - frame.store_param(origin_name, - origin_value?origin_value:NEW VUnknown(pool())); + frame.store_param(method->name, + origin_value?origin_value:NEW VVoid(pool())); // source - String source_name(pool(), "source"); Value *source_value=0; - if(problem_source) { + if(problem_source && problem_source->size()) { 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())); + frame.store_param(method->name, + source_value?source_value:NEW VVoid(pool())); // comment - String comment_name(pool(), "comment"); String *comment_value=NEW String(pool(), - e.comment(), true); - frame.store_param(comment_name, + e.comment(), 0, true); + frame.store_param(method->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); + type_value=NEW VVoid(pool()); + frame.store_param(method->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); + code_value=NEW VVoid(pool()); + frame.store_param(method->name, code_value); // future $response:body= // execute ^exception[origin;source;comment;type;code] @@ -326,29 +454,32 @@ void Request::core(const char *root_auto origin.file, 1+origin.line); #endif printed+=snprintf(buf+printed, MAX_STRING-printed, "'%s' ", - problem_source->cstr()); + problem_source->cstr(String::UL_AS_IS)); } 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()); + type->cstr(String::UL_AS_IS)); const String *code=e.code(); if(code) printed+=snprintf(buf+printed, MAX_STRING-printed, ", code: %s", - code->cstr()); + code->cstr(String::UL_AS_IS)); } // future $response:content-type response.fields().put(*content_type_name, - NEW VString(*NEW String(pool(), "text/plain"))); + NEW VString(*NEW String(pool(), UNHANDLED_EXCEPTION_CONTENT_TYPE))); // future $response:body body_string=NEW String(pool(), buf); } + VString body_vstring(*body_string); + const VFile *body_file=body_vstring.as_vfile(); + // ERROR. write it out - output_result(*body_string, header_only); + output_result(*body_file, header_only); } CATCH(e) { // exception in request exception handler @@ -360,27 +491,57 @@ void Request::core(const char *root_auto 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? + 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()); - } -VStateless_class *Request::use_file(const String& file_spec, bool fail_on_read_problem, +VStateless_class *Request::use_file(const String& file_name, + bool ignore_class_path, bool fail_on_read_problem, const String *name, VStateless_class *base_class) { // cyclic dependence check - if(used_files.get(file_spec)) + if(used_files.get(file_name)) return base_class; - used_files.put(file_spec, (Hash::Val *)true); + used_files.put(file_name, (Hash::Val *)true); + const String *file_spec; + if(ignore_class_path || file_name.first_char()=='/') { + // ignore_class_path | absolute path, no need to scan MAIN:class_path + file_spec=&file_name; + } else { + file_spec=0; + if(main_class) + if(Value *element=main_class->get_element(*class_path_name)) + if(Table *table=element->get_table()) { + int size=table->size(); + for(int i=size; i--; ) { + const String& path=*static_cast(table->get(i))->get_string(0); + String *test_file_spec=NEW String(path); + *test_file_spec << "/"; + *test_file_spec << file_name; + if(file_readable(*test_file_spec)) { + file_spec=test_file_spec; // found along class_path + break; + } + } + if(!file_spec) + THROW(0, 0, + &file_name, + "not found along " CLASS_PATH_NAME); + } + if(!file_spec) + THROW(0, 0, + &file_name, + "can not be found because no " CLASS_PATH_NAME " were specified"); + } - char *source=file_read_text(pool(), file_spec, fail_on_read_problem); + char *source=file_read_text(pool(), *file_spec, fail_on_read_problem); if(!source) return base_class; - return use_buf(source, file_spec.cstr(), 0/*new class*/, name, base_class); + return use_buf(source, file_spec->cstr(), 0/*new class*/, name, base_class); } VStateless_class *Request::use_buf(const char *source, const char *file, @@ -390,31 +551,18 @@ VStateless_class *Request::use_buf(const 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*/); + execute_nonvirtual_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, const char *msg) { - - if((value.get_junction()!=0) ^ !is) - THROW(0, 0, - &method_name, - msg); -} - const String& Request::relative(const char *apath, const String& relative_name) { int lpath_buf_size=strlen(apath)+1; char *lpath=(char *)malloc(lpath_buf_size); memcpy(lpath, apath, lpath_buf_size); - rsplit(lpath, '/'); + if(!rsplit(lpath, '/')) + strcpy(lpath, "."); String& result=*NEW String(pool(), lpath); - result.APPEND_CONST("/"); - result.append(relative_name, String::UL_PASS_APPENDED); + result << "/" << relative_name; return result; } @@ -422,30 +570,60 @@ const String& Request::absolute(const St 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); + result << relative_name; return result; } else return relative(info.path_translated, relative_name); } -void Request::output_result(const String& body_string, bool header_only) { +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(); + + SAPI::add_header_attribute(pool, + aattribute.cstr(String::UL_AS_IS), + attributed_meaning_to_string(lmeaning, String::UL_HTTP_HEADER).cstr()); +} +void Request::output_result(const VFile& body_file, bool header_only) { // header: cookies cookie.output_result(); - // set default content-type - response.fields().put_dont_replace(*content_type_name, default_content_type); + // set content-type + if(String *body_file_content_type=static_cast( + 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(body_file.fields().get(*name_name))) + if(vfile_name->string()!=NONAME_DAT) { + 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 char *body=body_string.cstr(); - size_t content_length=strlen(body); + 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); + snprintf(content_length_cstr, MAX_NUMBER, "%u", content_length); SAPI::add_header_attribute(pool(), "content-length", content_length_cstr); } @@ -456,3 +634,18 @@ void Request::output_result(const String if(!header_only) SAPI::send_body(pool(), body, content_length); } + +const String& Request::mime_type_of(const char *user_file_name_cstr) { + if(mime_types) + if(const char *cext=strrchr(user_file_name_cstr, '.')) { + String sext(pool(), ++cext); + if(mime_types->locate(0, sext)) + if(const String *result=mime_types->item(1)) + return *result; + else + THROW(0, 0, + mime_types->origin_string(), + "MIME-TYPE table column elements must not be empty"); + } + return *NEW String(pool(), "application/octet-stream"); +}