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| version 1.28, 2001/03/13 17:54:14 | version 1.82, 2001/03/26 10:36:55 |
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| Line 1 | Line 1 |
| /* | /** @file |
| Parser | Parser: request class main part. @see compile.C and execute.C. |
| Copyright (c) 2001 ArtLebedev Group (http://www.artlebedev.com) | Copyright (c) 2001 ArtLebedev Group (http://www.artlebedev.com) |
| Author: Alexander Petrosyan <paf@design.ru> (http://design.ru/paf) | Author: Alexander Petrosyan <paf@design.ru> (http://design.ru/paf) |
| $Id$ | $Id$ |
| */ | */ |
| #include <string.h> | #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 "_root.h" | #include "_root.h" |
| #include "_env.h" | |
| #include "_table.h" | #include "_table.h" |
| #include "core.h" | #include "_file.h" |
| #include "pa_globals.h" | |
| #include "pa_vint.h" | |
| #include "pa_vmframe.h" | |
| #include "pa_types.h" | |
| #include "pa_vtable.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"; | |
| #include <stdio.h> | /// content type of response when no $MAIN:defaults.content-type defined |
| const char *DEFAULT_CONTENT_TYPE="text/html"; | |
| // | |
| Request::Request(Pool& apool, | Request::Request(Pool& apool, |
| String::Untaint_lang alang, | Info& ainfo, |
| char *adocument_root, | String::Untaint_lang adefault_lang) : Pooled(apool), |
| char *apage_filespec) : Pooled(apool), | |
| stack(apool), | stack(apool), |
| root_class(apool), | ROOT(apool), |
| env_class(apool), | env(apool), |
| form_class(apool), | form(apool), |
| request(apool, *this), | |
| response(apool), | |
| cookie(apool), | |
| fclasses(apool), | fclasses(apool), |
| flang(alang), | fdefault_lang(adefault_lang), flang(adefault_lang), |
| fdocument_root(adocument_root), | info(ainfo), |
| fpage_filespec(apage_filespec) | default_content_type(0), |
| used_files(apool) | |
| { | { |
| // root superclass, | // root superclass, |
| // parent of all classes, | // parent of all classes, |
| // operators holder | // operators holder |
| initialize_root_class(pool(), root_class); | initialize_root_class(pool(), ROOT); |
| classes().put(*root_class_name, &root_class); | classes().put(*root_class_name, &ROOT); |
| // table class | // table class |
| classes().put(*table_class_name, table_class); | classes().put(*table_class_name, table_class); |
| // table_class->set_name(*table_class_name); | // file class |
| classes().put(*file_class_name, file_class); | |
| // env class | // env class |
| classes().put(*env_class_name, &env_class); | classes().put(*env_class_name, &env); |
| // form class | // 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<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()); | |
| } | } |
| char *Request::core(bool& error) { | /** |
| error=false; | load MAIN class, execute @main. |
| char *result; | 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 { | TRY { |
| // loading system auto.p | char *auto_filespec=(char *)malloc(MAX_STRING); |
| char *sys_auto_file="C:\\temp\\auto.p"; | |
| VStateless_class *main_class=use_file( | // loading root auto.p |
| sys_auto_file, false/*ignore possible read problem*/, | if(root_auto_path) { |
| main_class_name); | String& filespec=*NEW String(pool()); |
| filespec.APPEND(root_auto_path, 0, "root_auto", 0); | |
| // TODO: использовать $MAIN:limits здесь, пока их не сломали враги | filespec.APPEND_CONST("/" AUTO_FILE_NAME); |
| main_class=use_file( | |
| // TODO: load site auto.p files, all assigned bases from upper dir | filespec, root_auto_fail, |
| char *site_auto_file="Y:\\parser3\\src\\auto.p"; | main_class_name, main_class); |
| main_class=use_file( | } |
| site_auto_file, false/*ignore possible read problem*/, | |
| main_class_name, main_class); | |
| // there must be some auto.p | // $MAIN:limits hash used here, |
| if(!main_class) | // until someone with less privileges have overriden them |
| THROW(0,0, | { |
| 0, | Value *limits=main_class?main_class->get_element(*limits_name):0; |
| "no 'auto.p' found (nither system nor any site's)"); | // $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); | |
| // loading site auto.p | |
| if(site_auto_path) { | |
| String& filespec=*NEW String(pool()); | |
| filespec.APPEND(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); | |
| 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; | |
| } | |
| } | |
| // compiling requested file | // compiling requested file |
| main_class=use_file(fpage_filespec, true/*don't ignore read problem*/, | String& spath_translated=*NEW String(pool()); |
| spath_translated.APPEND(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_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(VTable *vtable=element->get_vtable()) | |
| pool().set_tag(&vtable->table()); | |
| // execute @main[] | // execute @main[] |
| result=execute_method(*main_class, *main_method_name, | const String *body_string=execute_method(*main_class, *main_method_name); |
| true /*result needed*/); | if(!body_string) |
| if(!result) | |
| THROW(0,0, | THROW(0,0, |
| 0, | 0, |
| "'"MAIN_METHOD_NAME"' method not found"); | "'"MAIN_METHOD_NAME"' method not found"); |
| // post-process | |
| // todo | |
| // extract response body | |
| Value *body_value=static_cast<Value *>( | |
| 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 | // we're returning not result, but error explanation |
| error=true; | TRY { |
| result=(char *)malloc(MAX_STRING); | // log the beast |
| result[0]=0; | const String *problem_source=e.problem_source(); |
| size_t printed=0; | 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... | |
| if(Value *value=main_class->get_element(*exception_method_name)) | |
| if(Junction *junction=value->get_junction()) | |
| if(const Method *method=junction->method) { | |
| // preparing to pass parameters to | |
| // @exception[origin;source;comment;type;code] | |
| VMethodFrame frame(pool(), *junction); | |
| frame.set_self(*main_class); | |
| const String *problem_source=e.problem_source(); | |
| // origin | |
| String origin_name(pool(), "origin"); | |
| Value *origin_value=0; | |
| #ifndef NO_STRING_ORIGIN | |
| if(problem_source) { | |
| const Origin& origin=problem_source->origin(); | |
| if(origin.file) { | |
| char *buf=(char *)malloc(MAX_STRING); | |
| snprintf(buf, MAX_STRING, "%s(%d):", | |
| origin.file, 1+origin.line); | |
| String *origin_file_line=NEW String(pool(), | |
| buf, true); | |
| origin_value=NEW VString(*origin_file_line); | |
| } | |
| } | |
| #endif | |
| frame.store_param(origin_name, | |
| origin_value?origin_value:NEW VUnknown(pool())); | |
| const String *problem_source=e.problem_source(); | // source |
| if(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 | |
| String comment_name(pool(), "comment"); | |
| String *comment_value=NEW String(pool(), | |
| e.comment(), true); | |
| frame.store_param(comment_name, | |
| NEW VString(*comment_value)); | |
| // type | |
| String type_name(pool(), "type"); | |
| Value *type_value; | |
| if(e.type()) { | |
| String& type_copy=*NEW String(pool()); | |
| type_value=NEW VString(type_copy.append(*e.type(), | |
| flang, true)); | |
| } else | |
| type_value=NEW VUnknown(pool()); | |
| frame.store_param(type_name, type_value); | |
| // code | |
| String code_name(pool(), "code"); | |
| Value *code_value; | |
| if(e.code()) { | |
| String& code_copy=*NEW String(pool()); | |
| code_value=NEW VString(code_copy.append(*e.code(), | |
| flang, true)); | |
| } else | |
| code_value=NEW VUnknown(pool()); | |
| frame.store_param(code_name, code_value); | |
| // future $response:body= | |
| // execute ^exception[origin;source;comment;type;code] | |
| body_string=execute_method(frame, *method); | |
| } | |
| } | |
| if(!body_string) { // couldn't report an error beautifully? | |
| // doing that ugly | |
| // make up result: $origin $source $comment $type $code | |
| char *buf=(char *)malloc(MAX_STRING); | |
| size_t printed=0; | |
| const String *problem_source=e.problem_source(); | |
| if(problem_source) { | |
| #ifndef NO_STRING_ORIGIN | #ifndef NO_STRING_ORIGIN |
| const Origin& origin=problem_source->origin(); | const Origin& origin=problem_source->origin(); |
| if(origin.file) | 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); | origin.file, 1+origin.line); |
| #endif | #endif |
| printed+=snprintf(result+printed, MAX_STRING-printed, "'%s' ", | printed+=snprintf(buf+printed, MAX_STRING-printed, "'%s' ", |
| problem_source->cstr()); | 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); | |
| } | |
| // ERROR. write it out | |
| output_result(*body_string, header_only); | |
| } | } |
| printed+=snprintf(result+printed, MAX_STRING-printed, "%s", | CATCH(e) { |
| e.comment()); | // exception in request exception handler |
| const String *type=e.type(); | // remember to rethrow it |
| if(type) { | rethrow_me=e; need_rethrow=true; |
| printed+=snprintf(result+printed, MAX_STRING-printed, " type: %s", | |
| type->cstr()); | |
| const String *code=e.code(); | |
| if(code) | |
| printed+=snprintf(result+printed, MAX_STRING-printed, ", code: %s", | |
| code->cstr()); | |
| } | } |
| 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( | VStateless_class *Request::use_file(const String& file_spec, bool fail_on_read_problem, |
| const char *file, bool fail_on_read_problem, | |
| const String *name, | const String *name, |
| VStateless_class *base_class) { | VStateless_class *base_class) { |
| // TODO: обнаружить|решить cyclic dependences | // cyclic dependence check |
| char *source=file_read(pool(), file, fail_on_read_problem); | 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) |
| return base_class; | return base_class; |
| return use_buf(source, file, 0/*new class*/, name, base_class); | return use_buf(source, file_spec.cstr(), 0/*new class*/, name, base_class); |
| } | } |
| VStateless_class *Request::use_buf( | VStateless_class *Request::use_buf(const char *source, const char *file, |
| const char *source, const char *file, | |
| VStateless_class *aclass, const String *name, | VStateless_class *aclass, const String *name, |
| VStateless_class *base_class) { | VStateless_class *base_class) { |
| // compile loaded class | // compile loaded class |
| Line 142 VStateless_class *Request::use_buf( | Line 403 VStateless_class *Request::use_buf( |
| return &cclass; | 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) | if((value.get_junction()!=0) ^ !is) |
| THROW(0, 0, | THROW(0, 0, |
| &method_name, | &method_name, |
| msg); | msg); |
| } | } |
| char *Request::relative(const char *path, const char *file) { | const String& Request::relative(const char *apath, const String& relative_name) { |
| char *result=(char *)malloc(strlen(path)+strlen(file)+1); | int lpath_buf_size=strlen(apath)+1; |
| strcpy(result, path); | char *lpath=(char *)malloc(lpath_buf_size); |
| rsplit(result,'/'); | memcpy(lpath, apath, lpath_buf_size); |
| strcat(result, "/"); | rsplit(lpath, '/'); |
| strcat(result, file); | String& result=*NEW String(pool(), lpath); |
| result.APPEND_CONST("/"); | |
| result.append(relative_name, String::UL_PASS_APPENDED); | |
| return result; | return result; |
| } | } |
| char *Request::absolute(const char *name) { | const String& Request::absolute(const String& relative_name) { |
| if(name[0]=='/') { | char *relative_name_cstr=relative_name.cstr(); |
| char *result=(char *)malloc(strlen(fdocument_root)+strlen(name)+1); | if(relative_name_cstr[0]=='/') { |
| strcpy(result, fdocument_root); | String& result=*NEW String(pool(), info.document_root); |
| strcat(result, name); | result.append(relative_name, String::UL_PASS_APPENDED); |
| return result; | return result; |
| } else | } else |
| return relative(fpage_filespec, name); | return relative(info.path_translated, relative_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?default_content_type | |
| :NEW VString(*NEW String(pool(), 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); | |
| } | } |