--- parser3/src/main/pa_request.C 2001/08/07 13:23:33 1.149 +++ parser3/src/main/pa_request.C 2012/05/24 12:50:20 1.331 @@ -1,17 +1,9 @@ /** @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) + Copyright (c) 2001-2012 Art. Lebedev Studio (http://www.artlebedev.com) + Author: Alexandr Petrosian (http://paf.design.ru) */ -static const char *RCSId="$Id: pa_request.C,v 1.149 2001/08/07 13:23:33 parser Exp $"; - -#include "pa_config_includes.h" - -#include "pcre.h" -#include "internal.h" -extern "C" unsigned char pcre_default_tables[]; // pcre/chartables.c #include "pa_sapi.h" #include "pa_common.h" @@ -22,128 +14,310 @@ extern "C" unsigned char pcre_default_ta #include "pa_vint.h" #include "pa_vmethod_frame.h" #include "pa_types.h" +#include "pa_venv.h" +#include "pa_vmath.h" +#include "pa_vstatus.h" +#include "pa_vrequest.h" #include "pa_vtable.h" #include "pa_vfile.h" #include "pa_dictionary.h" +#include "pa_charset.h" +#include "pa_charsets.h" +#include "pa_cache_managers.h" +#include "pa_vmail.h" +#include "pa_vform.h" +#include "pa_vcookie.h" +#include "pa_vresponse.h" +#include "pa_vmemory.h" +#include "pa_vconsole.h" +#include "pa_vdate.h" + +volatile const char * IDENT_PA_REQUEST_C="$Id: pa_request.C,v 1.331 2012/05/24 12:50:20 misha Exp $" IDENT_PA_REQUEST_H IDENT_PA_REQUEST_CHARSETS_H IDENT_PA_REQUEST_INFO_H IDENT_PA_VCONSOLE_H; + +// consts + +#define UNHANDLED_EXCEPTION_METHOD_NAME "unhandled_exception" /// content type of exception response, when no @MAIN:exception handler defined -const char *UNHANDLED_EXCEPTION_CONTENT_TYPE="text/plain"; +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"; -const char *ORIGINS_CONTENT_TYPE="text/plain"; +const char* DEFAULT_CONTENT_TYPE="text/html"; +const char* ORIGINS_CONTENT_TYPE="text/plain"; -Methoded *MOP_create(Pool&); +// defines for globals + +#define MAIN_METHOD_NAME "main" +#define AUTO_METHOD_NAME "auto" +#define AUTOUSE_METHOD_NAME "autouse" +#define BODY_NAME "body" +#define EXCEPTION_TYPE_PART_NAME "type" +#define EXCEPTION_SOURCE_PART_NAME "source" +#define EXCEPTION_COMMENT_PART_NAME "comment" + +// globals + +const String main_method_name(MAIN_METHOD_NAME); +const String auto_method_name(AUTO_METHOD_NAME); +const String autouse_method_name(AUTOUSE_METHOD_NAME); + +const String body_name(BODY_NAME); +const String exception_type_part_name(EXCEPTION_TYPE_PART_NAME); +const String exception_source_part_name(EXCEPTION_SOURCE_PART_NAME); +const String exception_comment_part_name(EXCEPTION_COMMENT_PART_NAME); +const String exception_handled_part_name(EXCEPTION_HANDLED_PART_NAME); + +// defines for statics + +#define CHARSETS_NAME "CHARSETS" +#define MIME_TYPES_NAME "MIME-TYPES" +#define STRICT_VARS_NAME "STRICT-VARS" +#define ORIGINS_MODE_NAME "ORIGINS" +#define CONF_METHOD_NAME "conf" +#define POST_PROCESS_METHOD_NAME "postprocess" +#define DOWNLOAD_NAME "download" +#define CLASS_PATH_NAME "CLASS_PATH" +#define RESPONSE_BODY_FILE_NAME "file" + +// statics + +static const String charsets_name(CHARSETS_NAME); +static const String main_class_name(MAIN_CLASS_NAME); +static const String mime_types_name(MIME_TYPES_NAME); +static const String strict_vars_name(STRICT_VARS_NAME); +static const String origins_mode_name(ORIGINS_MODE_NAME); +static const String conf_method_name(CONF_METHOD_NAME); +static const String post_process_method_name(POST_PROCESS_METHOD_NAME); +static const String download_name(DOWNLOAD_NAME); +static const String class_path_name(CLASS_PATH_NAME); +static const String response_body_file_name(RESPONSE_BODY_FILE_NAME); + +// defines + +// op.C +VStateless_class& VClassMAIN_create(); // -Request::Request(Pool& apool, - Info& ainfo, - String::Untaint_lang adefault_lang) : Pooled(apool), - stack(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), - mime_types(0), - main_class(0), - connection(0), - pcre_tables(0), - classes_conf(apool), - anti_endless_execute_recoursion(0) +Request::Request(SAPI_Info& asapi_info, Request_info& arequest_info, + String::Language adefault_lang): + // private + anti_endless_execute_recoursion(0), + anti_endless_json_string_recoursion(0), + + // public + method_frame(0), + rcontext(0), + wcontext(0), + flang(adefault_lang), + fconnection(0), + finterrupted(false), + fskip(SKIP_NOTHING), + fin_cycle(0), + + // public +#ifdef RESOURCES_DEBUG + sql_connect_time(0), + sql_request_time(0), +#endif + + // public + request_info(arequest_info), + sapi_info(asapi_info), + charsets(UTF8_charset, UTF8_charset, UTF8_charset), // default charsets + + main_class(VClassMAIN_create()), + form(*new VForm(charsets, arequest_info)), + mail(*new VMail), + response(*new VResponse(arequest_info, charsets)), + cookie(*new VCookie(charsets, arequest_info)), + console(*new VConsole), + + // private + configure_admin_done(false), + + // private defaults + fdefault_lang(adefault_lang), + // private mime types + mime_types(0) { + pa_register_thread_request(*this); + + // file_no=0 => unknown + file_list+=String::Body("UNKNOWN"); + file_list+=String::Body("-body of process-"); // pseudo_file_no__process + + // maybe expire old caches + cache_managers->maybe_expire(); + /// directly used - // operators - OP.register_directly_used(*this); + // MAIN class, operators + classes().put(main_class.name(), &main_class); // classes: // table, file, random, mail, image, ... - methoded_array->register_directly_used(*this); + methoded_array().register_directly_used(*this); /// methodless // env class - classes().put(*NEW String(pool(), ENV_CLASS_NAME), &env); + classes().put(String::Body(ENV_CLASS_NAME), new VEnv(asapi_info)); + // status class + classes().put(String::Body(STATUS_CLASS_NAME), new VStatus()); // request class - classes().put(*NEW String(pool(), REQUEST_CLASS_NAME), &request); + classes().put(String::Body(REQUEST_CLASS_NAME), new VRequest(arequest_info, charsets, form)); // cookie class - classes().put(*NEW String(pool(), COOKIE_CLASS_NAME), &cookie); - + classes().put(String::Body(COOKIE_CLASS_NAME), &cookie); + // console class + classes().put(String::Body(CONSOLE_CLASS_NAME), &console); /// methoded // response class - classes().put(response.get_class()->name(), &response); + classes().put(response.get_class()->name(), &response); /// bases used // form class - classes().put(form.get_class()->base()->name(), &form); + classes().put(form.get_class()->base_class()->name(), &form); + // mail class + classes().put(mail.get_class()->base_class()->name(), &mail); // math class - classes().put(math.get_class()->base()->name(), &math); + { + Value& math=*new VMath; + classes().put(math.get_class()->base_class()->name(), &math); + } + // memory class + { + Value& memory=*new VMemory; + classes().put(memory.get_class()->base_class()->name(), &memory); + } } -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; +Request::~Request() { +#ifdef XML + // if for some strange reason xml generic errors failed to be reported, free them up + if(const char* xml_generic_errors=xmlGenericErrors()) { + SAPI::log(sapi_info, "warning: unreported xmlGenericErrors: %s", xml_generic_errors); + free((void *)xml_generic_errors); + } +#endif +} - 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; +Value& Request::get_self() { return method_frame/*always have!*/->self(); } - 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; +Value* Request::get_class(const String& name){ + Value* result=classes().get(name); + if(!result) + if(Value* value=main_class.get_element(autouse_method_name)) + if(Junction* junction=value->get_junction()) + if(const Method *method=junction->method) { + Value *vname=new VString(name); + VMethodFrame frame(*method, 0 /*no parent*/, main_class); + + frame.store_params(&vname, 1); + // we don't need the result + execute_method(frame); + + result=classes().get(name); + } + + return result; +} + +static void load_charset(HashStringValue::key_type akey, + HashStringValue::value_type avalue, + Request_charsets* charsets) { + const String::Body NAME=String(akey, String::L_CLEAN).change_case(charsets->source(), String::CC_UPPER); + ::charsets.load_charset(*charsets, NAME, avalue->as_string()); +} +void Request::configure_admin(VStateless_class& conf_class) { + if(configure_admin_done) + throw Exception(PARSER_RUNTIME, + 0, + "parser already configured"); + configure_admin_done=true; + + // charsets must only be specified in method_frame config + // so that users would not interfere + + /* $MAIN:CHARSETS[ + $.charsetname1[/full/path/to/charset/file.cfg] + ... + ] + */ + if(Value* vcharsets=conf_class.get_element(charsets_name)) { + if(!vcharsets->is_string()) + if(HashStringValue* charsets=vcharsets->get_hash()) + charsets->for_each(load_charset, &this->charsets); + else + throw Exception(PARSER_RUNTIME, + 0, + "$" MAIN_CLASS_NAME ":" CHARSETS_NAME " must be hash"); + } + +#ifdef STRICT_VARS + if(Value* strict_vars=conf_class.get_element(strict_vars_name)) { + if(strict_vars->is_bool()) + VVoid::strict_vars=strict_vars->as_bool(); + else + throw Exception(PARSER_RUNTIME, + 0, + "$" MAIN_CLASS_NAME ":" STRICT_VARS_NAME " must be bool"); } +#endif + + // configure method_frame options + // until someone with less privileges have overriden them + methoded_array().configure_admin(*this); +} + +const char* Request::get_exception_cstr( + const Exception& e, + Request::Exception_details& details) { +#define PA_URI_FORMAT "%s: " +#define PA_ORIGIN_FILE_POS_FORMAT "%s(%d:%d): " +#define PA_SOURCE_FORMAT "'%s' " +#define PA_COMMENT_TYPE_FORMAT "%s [%s]" + char* result=new(PointerFreeGC) char[MAX_STRING]; + + if(details.problem_source) { // do we know the guy? + if(details.trace) { // do whe know where he came from? + Operation::Origin origin=details.trace.origin(); + snprintf(result, MAX_STRING, + PA_URI_FORMAT + PA_ORIGIN_FILE_POS_FORMAT + PA_SOURCE_FORMAT PA_COMMENT_TYPE_FORMAT, + request_info.uri, + file_list[origin.file_no].cstr(), 1+origin.line, 1+origin.col, + details.problem_source->cstr(), + e.comment(), e.type() + ); + } else + snprintf(result, MAX_STRING, + PA_URI_FORMAT + PA_SOURCE_FORMAT PA_COMMENT_TYPE_FORMAT, + request_info.uri, + details.problem_source->cstr(), + e.comment(), e.type() + ); + } else + snprintf(result, MAX_STRING, + PA_URI_FORMAT + PA_COMMENT_TYPE_FORMAT, + request_info.uri, + e.comment(), e.type() + ); + + return result; +} + +void Request::configure() { + // configure admin options if not configured yet + if(!configure_admin_done) + configure_admin(main_class); + + // configure not-admin=user options + methoded_array().configure_user(*this); + + // $MAIN:MIME-TYPES + if(Value* element=main_class.get_element(mime_types_name)) + if(Table *table=element->get_table()) + mime_types=table; } /** load MAIN class, execute @main. @@ -152,500 +326,702 @@ static void element2case(unsigned char * the file user requested us to process all located classes become children of one another, composing class we name 'MAIN' + + @test log stack trace + */ -void Request::core(const char *root_auto_path, bool root_auto_fail, - const char *site_auto_path, bool site_auto_fail, - bool header_only) { - //_asm { int 3 } - bool need_rethrow=false; Exception rethrow_me; - TRY { - char *auto_filespec=(char *)malloc(MAX_STRING); - - // 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, - true/*ignore class_path*/, root_auto_fail, - main_class_name, main_class); - } - - // configure root options - // until someone with less privileges have overriden them - OP.configure_admin(*this); - methoded_array->configure_admin(*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, - true/*ignore class_path*/, site_auto_fail, - main_class_name, main_class); +void Request::core(const char* config_filespec, bool config_fail_on_read_problem, bool header_only) { +#ifdef RESOURCES_DEBUG +//measures +struct timeval mt[10]; +//measure:before all +gettimeofday(&mt[0],NULL); +#endif + try { + // filling mail received + mail.fill_received(*this); + + // loading config + if(config_filespec) { + const String& filespec=*new String(config_filespec); + use_file_directly(main_class, + filespec, + config_fail_on_read_problem, + true /*file must exist if 'fail on read problem' not set*/); } // loading auto.p files from document_root/.. // to the one beside requested file. // all assigned bases from upper dir { - Array ladder(pool()); - const char *after=info.path_translated; - size_t drlen=strlen(info.document_root); - if(memcmp(after, info.document_root, drlen)==0) { + const char* after=request_info.path_translated; + size_t drlen=strlen(request_info.document_root); + if(memcmp(after, request_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; + while(const char* before=strchr(after, '/')) { + String& sfile_spec=*new String; + if(after!=request_info.path_translated) { + sfile_spec.append_strdup( + request_info.path_translated, before-request_info.path_translated, + String::L_CLEAN); + sfile_spec << "/" AUTO_FILE_NAME; + + use_file_directly(main_class, + sfile_spec, + true /*fail on read problem*/, + false /*but ignore absence, sole user*/); } - 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):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); + try { + // compile requested file + String& spath_translated=*new String; + spath_translated.append_help_length(request_info.path_translated, 0, String::L_TAINTED); + use_file_directly(main_class, spath_translated); + + configure(); + } catch(...) { + configure(); // configure anyway, useful in @unhandled_exception [say, if they would want to mail by SMTP something] + rethrow; + } +#ifdef RESOURCES_DEBUG +//measure:after compile +gettimeofday(&mt[1],NULL); +#endif // execute @main[] - const String *body_string=execute_virtual_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, + throw Exception(PARSER_RUNTIME, + 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; - +#ifdef RESOURCES_DEBUG + //measure:after main +gettimeofday(&mt[2],NULL); +#endif + + // extract response body + Value* body_value=response.fields().get(download_name); // $response:download? + bool as_attachment=body_value!=0; + if(!body_value) + body_value=response.fields().get(body_name); // $response:body + if(!body_value) + body_value=new VString(*body_string); // just result of ^main[] + // @postprocess - if(Value *value=main_class->get_element(*post_process_method_name)) - if(Junction *junction=value->get_junction()) + 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); + VMethodFrame frame(*method, 0 /*no parent*/, main_class); - frame.store_param(method->name, - &body_vstring_before_post_process); - body_vstring_after_post_process= - NEW VString(*execute_method(frame, *method)); - } + frame.store_params(&body_value, 1); + execute_method(frame); - bool origins_mode=main_class->get_element(*origins_mode_name)!=0; + body_value=&frame.result().as_value(); + } - const VFile *body_file=body_vstring_after_post_process->as_vfile( - String::UL_UNSPECIFIED, origins_mode); + VFile* body_file=body_value->as_vfile(flang, &charsets); - // extract response body - Value *body_value=static_cast( - response.fields().get(*body_name)); - 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))); +#ifdef RESOURCES_DEBUG +//measure:after postprocess +gettimeofday(&mt[3],NULL); +#endif // OK. write out the result - output_result(*body_file, header_only); - } - CATCH(e) { // request handling problem + output_result(body_file, header_only, as_attachment); + +#ifdef RESOURCES_DEBUG + //measure:after output_result +gettimeofday(&mt[9],NULL); +t[9]=mt[9].tv_sec+mt[9].tv_usec/1000000.0; + +double t[10]; +for(int i=0;i<10;i++) + t[i]=mt[i].tv_sec+mt[i].tv_usec/1000000.0; +//measure:log2 compile,main,postprocess,output +SAPI::log("rmeasure: %s,%.2f,%.2f,%.2f %.2f,%.2f %.2f", +request_info.uri, +t[1]-t[0], +t[2]-t[1], +t[3]-t[2], +sql_connect_time,sql_request_time, +t[9]-t[3] +); +#endif + } catch(const Exception& e) { // request handling problem + try { // we're returning not result, but error explanation - TRY { - // log the beast - const String *problem_source=e.problem_source(); - if(problem_source && problem_source->size()) - 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(String::UL_AS_IS), - e.comment(), - 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(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(); - // this is what we'd return in $response:body - const String *body_string=0; + Request::Exception_details details=get_details(e); + const char* exception_cstr=get_exception_cstr(e, details); - 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(), value->name(), *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 && problem_source->size()) { - const Origin& origin=problem_source->origin(); - if(origin.file) { - char *buf=(char *)malloc(MAX_STRING); - size_t buf_size=snprintf(buf, MAX_STRING, "%s(%d):", - origin.file, 1+origin.line); - String *origin_file_line=NEW String(pool(), - buf, buf_size, true); - origin_value=NEW VString(*origin_file_line); - } - } -#endif - frame.store_param(method->name, - origin_value?origin_value:NEW VVoid(pool())); + // reset language to default + flang=fdefault_lang; + + // reset response + response.fields().clear(); - // source - Value *source_value=0; - 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(method->name, - source_value?source_value:NEW VVoid(pool())); + // this is what we'd return in $response:body + const String* body_string=0; + + // maybe we'd be lucky enough as to report an error + // in a gracefull way... + if(Value* value=main_class.get_element(*new String(UNHANDLED_EXCEPTION_METHOD_NAME))) { + if(Junction* junction=value->get_junction()) { + if(const Method *method=junction->method) { + // preparing to pass parameters to + // @unhandled_exception[exception;stack] - // comment - String *comment_value=NEW String(pool(), - e.comment(), 0, 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 VVoid(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 VVoid(pool()); - frame.store_param(method->name, code_value); - - // future $response:body= - // execute ^exception[origin;source;comment;type;code] - body_string=execute_method(frame, *method); + // $stack[^table::create{name file lineno colno}] + Table::columns_type stack_trace_columns(new ArrayString); + *stack_trace_columns+=new String("name"); + *stack_trace_columns+=new String("file"); + *stack_trace_columns+=new String("lineno"); + *stack_trace_columns+=new String("colno"); + Table& stack_trace=*new Table(stack_trace_columns); + if(!exception_trace.is_empty()/*signed!*/) + for(size_t i=exception_trace.bottom_index(); iorigin(); - 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(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(String::UL_AS_IS)); - const String *code=e.code(); - if(code) - printed+=snprintf(buf+printed, MAX_STRING-printed, ", code: %s", - code->cstr(String::UL_AS_IS)); - } + // future $response:body= + // execute ^unhandled_exception[exception;stack] + exception_trace.clear(); // forget all about previous life, in case there would be error inside of this method, error handled would not be mislead by old stack contents (see extract_origin) + + VMethodFrame frame(*method, 0 /*no caller*/, main_class); + Value *params[]={&details.vhash, new VTable(&stack_trace)}; + + frame.store_params(params, 2); + execute_method(frame); - // 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); + body_string=&frame.result().as_string(); + } } + } + + if(!body_string) { // couldn't report an error beautifully? + // doing that ugly - VString body_vstring(*body_string); - const VFile *body_file=body_vstring.as_vfile(); + // future $response:content-type + response.fields().put(http_content_type, new VString(*new String(UNHANDLED_EXCEPTION_CONTENT_TYPE))); + // future $response:body + body_string=new String(exception_cstr); + } + + VString body_vstring(*body_string); + VFile* body_file=body_vstring.as_vfile(flang, &charsets); - // ERROR. write it out - output_result(*body_file, header_only); + // conditionally log it + Value* vhandled=details.vhash.hash().get(exception_handled_part_name); + if(!vhandled || !vhandled->as_bool()) { + SAPI::log(sapi_info, "%s", exception_cstr); } - CATCH(e) { - // exception in request exception handler - // remember to rethrow it - rethrow_me=e; need_rethrow=true; + + // ERROR. write it out + output_result(body_file, header_only, false); + + } catch(const Exception& e) { // exception in unhandled exception + Request::Exception_details details=get_details(e); + const char* exception_cstr=get_exception_cstr(e, details); + // unconditionally log the beast + SAPI::log(sapi_info, "%s", exception_cstr); + + throw Exception(0, + 0, + "in %s", + exception_cstr); } - 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()); +uint Request::register_file(String::Body file_spec) { + file_list+=file_spec; + return file_list.count()-1; } -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) { +void Request::use_file_directly(VStateless_class& aclass, + const String& file_spec, + bool fail_on_read_problem, + bool fail_on_file_absence) { + // cyclic dependence check - if(used_files.get(file_name)) - return base_class; - 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"); + if(used_files.get(file_spec)) + return; + used_files.put(file_spec, true); + + if(fail_on_read_problem && !fail_on_file_absence) // ignore file absence if asked for + if(!entry_exists(file_spec)) + return; + + if(const char* source=file_read_text(charsets, file_spec, fail_on_read_problem)) + use_buf(aclass, source, 0, register_file(file_spec)); +} + + +void Request::use_file(VStateless_class& aclass, + const String& file_name, + const String* use_filespec/*absolute*/) { + + if(file_name.is_empty()) + throw Exception(PARSER_RUNTIME, + 0, + "usage failed - no filename was specified"); + + const String* filespec=0; + + if(file_name.first_char()=='/') //absolute path? [no need to scan MAIN:CLASS_PATH] + filespec=&absolute(file_name); + else if(use_filespec){ // search in current dir first + size_t last_slash_pos=use_filespec->strrpbrk("/"); + if(last_slash_pos!=STRING_NOT_FOUND) + filespec=file_exist(use_filespec->mid(0, last_slash_pos), file_name); // found in current dir? } - char *source=file_read_text(pool(), *file_spec, fail_on_read_problem); - if(!source) - return base_class; + if(!filespec){ + // prevent multiple scan CLASS_PATH for searching one file + if(searched_along_class_path.get(file_name)) + return; + searched_along_class_path.put(file_name, true); + if(Value* element=main_class.get_element(class_path_name)) { + if(element->is_string()) { + filespec=file_exist(absolute(element->as_string()), file_name); // found at class_path? + } else if(Table *table=element->get_table()) { + for(size_t i=table->count(); i--; ) { + const String& path=*(*table->get(i))[0]; + if(filespec=file_exist(absolute(path), file_name)) + break; // found along class_path + } + } else + throw Exception(PARSER_RUNTIME, + 0, + "$" CLASS_PATH_NAME " must be string or table"); + if(!filespec) + throw Exception(PARSER_RUNTIME, + &file_name, + "not found along " MAIN_CLASS_NAME ":" CLASS_PATH_NAME); + } else + throw Exception(PARSER_RUNTIME, + &file_name, + "usage failed - no $" MAIN_CLASS_NAME ":" CLASS_PATH_NAME " were specified"); + } - return use_buf(source, file_spec->cstr(), 0/*new class*/, name, base_class); + use_file_directly(aclass, *filespec); } -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_nonvirtual_method(cclass, *auto_method_name, false /*no result needed*/); - return &cclass; +void Request::use_buf(VStateless_class& aclass, + const char* source, const String* main_alias, + uint file_no, + int line_no_offset) { + // temporary zero @conf so to maybe-replace it in compiled code + Temp_method temp_method_conf(aclass, conf_method_name, 0); + // temporary zero @auto so to maybe-replace it in compiled code + Temp_method temp_method_auto(aclass, auto_method_name, 0); + + // compile loaded classes + ArrayClass& cclasses=compile(&aclass, source, main_alias, file_no, line_no_offset); + + VString* vfilespec= + new VString(*new String(file_list[file_no], String::L_TAINTED)); + + for(size_t i=0; iname*/); + + // locate and execute possible @auto[] static + execute_nonvirtual_method(cclass, + auto_method_name, vfilespec, + false/*no result needed*/); + } } -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); - if(!rsplit(lpath, '/')) - strcpy(lpath, "."); - String& result=*NEW String(pool(), lpath); - result << "/" << relative_name; - return result; +const String& Request::relative(const char* apath, const String& relative_name) { + char *hpath=strdup(apath); + String& result=*new String; + if(rsplit(hpath, '/')) // if something/splitted + result << hpath << "/"; + result << relative_name; + 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); + if(relative_name.first_char()=='/') { + String& result=*new String(strdup(request_info.document_root)); result << relative_name; return result; } else - return relative(info.path_translated, relative_name); + if(relative_name.pos("://")!=STRING_NOT_FOUND // something like "http://xxx" +#ifdef WIN32 + || relative_name.pos(":")==1 // DRIVE: + || relative_name.starts_with("\\\\") // UNC1 + || relative_name.starts_with("//") // UNC2 +#endif + ) + return relative_name; + else + return relative(request_info.path_translated, relative_name); } -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) +#ifndef DOXYGEN +class Add_header_attribute_info +{ +public: + Add_header_attribute_info(Request& ar) : r(ar), add_last_modified(true) {} + Request& r; + bool add_last_modified; +}; +#endif +static void add_header_attribute( + HashStringValue::key_type name, + HashStringValue::value_type value, + Add_header_attribute_info* info) { + if(name==BODY_NAME + || name==DOWNLOAD_NAME + || name==CHARSET_NAME) return; + + const char* aname=String(name, String::L_URI).untaint_and_transcode_cstr(String::L_URI, &info->r.charsets); + + SAPI::add_header_attribute(info->r.sapi_info, + aname, + attributed_meaning_to_string(*value, String::L_URI, false).untaint_and_transcode_cstr(String::L_URI, &info->r.charsets) + ); + + if(strcasecmp(aname, "last-modified")==0) + info->add_last_modified=false; +} + +static void output_sole_piece(Request& r, + bool header_only, + VFile& body_file, + Value* body_file_content_type) { + // transcode text body when "text/*" or simple result + String::C output(body_file.value_ptr(), body_file.value_size()); + if(!body_file_content_type/*vstring.as_vfile*/ || body_file_content_type->as_string().pos("text/")==0) + output=Charset::transcode(output, + r.charsets.source(), + r.charsets.client()); - Value& lmeaning=*static_cast(ameaning); - Pool& pool=lmeaning.pool(); + // prepare header: Content-Length + SAPI::add_header_attribute(r.sapi_info, HTTP_CONTENT_LENGTH, format(output.length, "%u")); - SAPI::add_header_attribute(pool, - aattribute.cstr(String::UL_AS_IS), - attributed_meaning_to_string(lmeaning, String::UL_HTTP_HEADER).cstr()); + // send header + SAPI::send_header(r.sapi_info); + + // send body + if(!header_only) + SAPI::send_body(r.sapi_info, output.str, output.length); +} + +#ifndef DOXYGEN +struct Range +{ + size_t start; + size_t end; +}; +#endif +static void parse_range(const String* s, Array &ar) { + const char *p = s->cstr(); + if(s->starts_with("bytes=")) + p += 6; + Range r; + while(*p){ + r.start = (size_t)-1; + r.end = (size_t)-1; + if(*p >= '0' && *p <= '9'){ + r.start = atol(p); + while(*p>='0' && *p<='9') ++p; + } + if(*p++ != '-') break; + if(*p >= '0' && *p <= '9'){ + r.end = atol(p); + while(*p>='0' && *p<='9') ++p; + } + if(*p == ',') ++p; + ar += r; + } +} + +static void output_pieces(Request& r, + bool header_only, + const String& filename, + size_t content_length, + Value& date, + bool add_last_modified) +{ + SAPI::add_header_attribute(r.sapi_info, "accept-ranges", "bytes"); + + const size_t BUFSIZE = 10*0x400; + char buf[BUFSIZE]; + const char *range = SAPI::get_env(r.sapi_info, "HTTP_RANGE"); + size_t offset=0; + size_t part_length=content_length; + if(range){ + Array ar; + parse_range(new String(range), ar); + size_t count = ar.count(); + if(count == 1){ + Range &rg = ar.get_ref(0); + if(rg.start == (size_t)-1 && rg.end == (size_t)-1){ + SAPI::add_header_attribute(r.sapi_info, HTTP_STATUS, "416 Requested Range Not Satisfiable"); + return; + } + if(rg.start == (size_t)-1 && rg.end != (size_t)-1){ + rg.start = content_length - rg.end; + rg.end = content_length; + offset += rg.start; + part_length = rg.end-rg.start; + }else if(rg.start != (size_t)-1 && rg.end == (size_t)-1){ + rg.end = content_length-1; + offset += rg.start; + part_length -= rg.start; + } + if(part_length == 0){ + SAPI::add_header_attribute(r.sapi_info, HTTP_STATUS, "204 No Content"); + return; + } + SAPI::add_header_attribute(r.sapi_info, HTTP_STATUS, "206 Partial Content"); + snprintf(buf, BUFSIZE, "bytes %u-%u/%u", rg.start, rg.end, content_length); + SAPI::add_header_attribute(r.sapi_info, "content-range", buf); + }else if(count != 0){ + SAPI::add_header_attribute(r.sapi_info, HTTP_STATUS, "501 Not Implemented"); + return; + } + } + + + SAPI::add_header_attribute(r.sapi_info, HTTP_CONTENT_LENGTH, format(part_length, "%u")); + + if(add_last_modified) + SAPI::add_header_attribute(r.sapi_info, "last-modified", attributed_meaning_to_string(date, String::L_AS_IS, true).cstr()); + + SAPI::send_header(r.sapi_info); + + const String& filespec=r.absolute(filename); + + size_t sent = 0; + if(!header_only){ + size_t to_read = 0; + size_t size = 0; + do{ + to_read = part_length( - body_file.fields().get(*vfile_mime_type_name))) { + // _file_ content-type might be specified + Value* body_file_content_type=body_file->fields().get(content_type_name); + + // Content-Disposition + Value* vfile_name=body_file->fields().get(name_name); + if(!vfile_name) { + vfile_name=body_file->fields().get(response_body_file_name); + if(vfile_name) { + char* name_cstr=vfile_name->as_string().cstrm(); + if(char *after_slash=rsplit(name_cstr, '\\')) + name_cstr=after_slash; + if(char *after_slash=rsplit(name_cstr, '/')) + name_cstr=after_slash; + vfile_name=new VString(*new String(name_cstr)); + } + } + if(vfile_name) { + const String& sfile_name=vfile_name->as_string(); + if(sfile_name!=NONAME_DAT) { + VHash& hash=*new VHash(); + HashStringValue &h=hash.hash(); + h.put(value_name, new VString( as_attachment ? content_disposition_attachment : content_disposition_inline )); + h.put(content_disposition_filename_name, new VString(String(sfile_name, String::L_HTTP_HEADER))); + + response.fields().put(content_disposition, &hash); + + if(!body_file_content_type) + body_file_content_type=new VString(mime_type_of(sfile_name.cstr())); + } + } + + // set Content-Type + if(body_file_content_type) { // body file content type - response.fields().put(*content_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 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, "%u", content_length); - SAPI::add_header_attribute(pool(), "content-length", content_length_cstr); + response.fields().put_dont_replace(content_type_name, new VString(*new String(DEFAULT_CONTENT_TYPE))); } - // send header - SAPI::send_header(pool()); - - // send body - if(!header_only) - SAPI::send_body(pool(), body, content_length); + // prepare header: $response:fields without :body, :download and :charset + Add_header_attribute_info info(*this); + response.fields().for_each(add_header_attribute, &info); + + if(Value* vresponse_body_file=body_file->fields().get(response_body_file_name)) { + // $response:[download|body][$.file[filespec]] -- optput specified file + const String& sresponse_body_file=vresponse_body_file->as_string(); + size_t content_length=0; + time_t atime=0, mtime=0, ctime=0; + file_stat(absolute(sresponse_body_file), + content_length, + atime, mtime, ctime); + + VDate* vdate=0; + if(Value* v=body_file->fields().get("mdate")) { + if(Value* vdatep=v->as(VDATE_TYPE)) + vdate=static_cast(vdatep); + else + throw Exception(PARSER_RUNTIME, 0, "mdate must be a date"); + } + if(!vdate) + vdate=new VDate(mtime); + + output_pieces(*this, header_only, + sresponse_body_file, + content_length, + *vdate, + info.add_last_modified); + } else { + if(body_file_content_type) + if(HashStringValue *hash=body_file_content_type->get_hash()) + body_file_content_type=hash->get(value_name); + + output_sole_piece(*this, header_only, + *body_file, body_file_content_type); + } } -const String& Request::mime_type_of(const char *user_file_name_cstr) { +const String& Request::mime_type_of(const String* file_name) { + return mime_type_of(file_name?file_name->taint_cstr(String::L_FILE_SPEC):0); +} + +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)) + if(const char* cext=strrchr(user_file_name_cstr, '.')) { + String sext(++cext); + Table::Action_options options; + if(mime_types->locate(0, sext.change_case(charsets.source(), String::CC_LOWER), options)) + 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"); + throw Exception(PARSER_RUNTIME, + 0, + MIME_TYPES_NAME " table column elements must not be empty"); + } + + return *new String("application/octet-stream"); +} + +const String* Request::get_used_filename(uint file_no){ + if(file_no < file_list.count()) + return new String(file_list[file_no], String::L_TAINTED); + return 0; +} + +#ifdef XML +xmlChar* Request::transcode(const String& s) { + return charsets.source().transcode(s); +} + +xmlChar* Request::transcode(const String::Body s) { + return charsets.source().transcode(s); +} + +const String& Request::transcode(const xmlChar* s) { + return charsets.source().transcode(s); +} +#endif + + +const Request::Trace Request::Exception_trace::extract_origin(const String*& problem_source) { + Trace result; + if(!is_empty()) { + result=bottom_value(); + if(!problem_source) { // we don't know who trigged the bug? + problem_source=result.name(); // consider the stack-top-guy (we usually know source of next-from-throw-point exception) did that + fbottom++; + } else if(result.name()==problem_source) // it is that same guy? + fbottom++; // throw away that trace + else { + // stack top contains not us, + // leaving result intact + // it would help ^throw } - return *NEW String(pool(), "application/octet-stream"); + } + + return result; +} + +Request::Exception_details Request::get_details(const Exception& e) { + const String* problem_source=e.problem_source(); + Trace trace=exception_trace.extract_origin(problem_source); + + VHash& vhash=*new VHash; HashStringValue& hash=vhash.hash(); + + // $.type + if(const char* type=e.type(true)) + hash.put(exception_type_part_name, new VString(*new String(type))); + + // $.source + if(problem_source) { + String& source=*new String(*problem_source, String::L_TAINTED); + hash.put(exception_source_part_name, new VString(source)); + } + + // $.file lineno colno + if(trace) { + const Operation::Origin origin=trace.origin(); + hash.put(String::Body("file"), + new VString(*new String(file_list[origin.file_no], String::L_TAINTED))); + hash.put(String::Body("lineno"), new VInt(1+origin.line)); + hash.put(String::Body("colno"), new VInt(1+origin.col)); + } + + // $.comment + if(const char* comment=e.comment(true)) + hash.put(exception_comment_part_name, + new VString(*new String(comment, String::L_TAINTED))); + + // $.handled(0) + hash.put(exception_handled_part_name, &VBool::get(false)); + + return Request::Exception_details(trace, problem_source, vhash); }