Annotation of parser3/src/main/pa_request.C, revision 1.383
1.54 paf 1: /** @file
1.55 paf 2: Parser: request class main part. @see compile.C and execute.C.
3:
1.374 moko 4: Copyright (c) 2001-2017 Art. Lebedev Studio (http://www.artlebedev.com)
1.194 paf 5: Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru)
1.218 paf 6: */
1.55 paf 7:
1.69 paf 8: #include "pa_sapi.h"
1.53 paf 9: #include "pa_common.h"
1.372 moko 10: #include "pa_os.h"
1.1 paf 11: #include "pa_request.h"
1.3 paf 12: #include "pa_wwrapper.h"
13: #include "pa_vclass.h"
1.31 paf 14: #include "pa_globals.h"
1.30 paf 15: #include "pa_vint.h"
1.297 misha 16: #include "pa_vmethod_frame.h"
1.32 paf 17: #include "pa_types.h"
1.248 paf 18: #include "pa_venv.h"
19: #include "pa_vmath.h"
20: #include "pa_vstatus.h"
21: #include "pa_vrequest.h"
1.78 paf 22: #include "pa_vtable.h"
1.90 paf 23: #include "pa_vfile.h"
1.147 parser 24: #include "pa_dictionary.h"
1.208 paf 25: #include "pa_charset.h"
1.186 paf 26: #include "pa_charsets.h"
1.248 paf 27: #include "pa_cache_managers.h"
28: #include "pa_vmail.h"
29: #include "pa_vform.h"
30: #include "pa_vcookie.h"
31: #include "pa_vresponse.h"
32: #include "pa_vmemory.h"
1.253 paf 33: #include "pa_vconsole.h"
1.267 paf 34: #include "pa_vdate.h"
1.159 parser 35:
1.383 ! moko 36: volatile const char * IDENT_PA_REQUEST_C="$Id: pa_request.C,v 1.382 2020/10/27 21:25:25 moko Exp $" IDENT_PA_REQUEST_H IDENT_PA_REQUEST_CHARSETS_H IDENT_PA_REQUEST_INFO_H IDENT_PA_VCONSOLE_H;
1.329 moko 37:
1.248 paf 38: // consts
39:
1.269 paf 40: #define UNHANDLED_EXCEPTION_METHOD_NAME "unhandled_exception"
1.207 paf 41:
1.82 paf 42: /// content type of response when no $MAIN:defaults.content-type defined
1.248 paf 43: const char* DEFAULT_CONTENT_TYPE="text/html";
44:
1.369 moko 45: const uint LOOP_LIMIT=20000;
1.361 moko 46: const uint EXECUTE_RECOURSION_LIMIT=1000;
1.369 moko 47: const size_t FILE_SIZE_LIMIT=512*1024*1024;
1.361 moko 48:
1.248 paf 49: // defines for globals
50:
51: #define MAIN_METHOD_NAME "main"
52: #define AUTO_METHOD_NAME "auto"
1.364 moko 53: #define USE_METHOD_NAME "use"
1.309 misha 54: #define AUTOUSE_METHOD_NAME "autouse"
1.364 moko 55:
1.248 paf 56: #define EXCEPTION_TYPE_PART_NAME "type"
57: #define EXCEPTION_SOURCE_PART_NAME "source"
58: #define EXCEPTION_COMMENT_PART_NAME "comment"
59:
1.364 moko 60: #define ORIGIN_KEY "origin"
61:
1.248 paf 62: // globals
63:
64: const String main_method_name(MAIN_METHOD_NAME);
65: const String auto_method_name(AUTO_METHOD_NAME);
1.364 moko 66: static const String use_method_name(USE_METHOD_NAME);
67: static const String autouse_method_name(AUTOUSE_METHOD_NAME);
1.311 misha 68:
1.248 paf 69: const String exception_type_part_name(EXCEPTION_TYPE_PART_NAME);
70: const String exception_source_part_name(EXCEPTION_SOURCE_PART_NAME);
71: const String exception_comment_part_name(EXCEPTION_COMMENT_PART_NAME);
72: const String exception_handled_part_name(EXCEPTION_HANDLED_PART_NAME);
73:
1.364 moko 74: static const String origin_key(ORIGIN_KEY);
75:
1.369 moko 76: int pa_loop_limit=LOOP_LIMIT;
1.361 moko 77: int pa_execute_recoursion_limit=EXECUTE_RECOURSION_LIMIT;
1.369 moko 78: size_t pa_file_size_limit=FILE_SIZE_LIMIT;
1.361 moko 79:
1.248 paf 80: // defines for statics
81:
82: #define CHARSETS_NAME "CHARSETS"
83: #define MIME_TYPES_NAME "MIME-TYPES"
1.330 moko 84: #define STRICT_VARS_NAME "STRICT-VARS"
1.357 moko 85: #define PROTOTYPE_NAME "OBJECT-PROTOTYPE"
1.362 moko 86: #define LIMITS_NAME "LIMITS"
1.369 moko 87: #define LOOP_LIMIT_NAME "max_loop"
1.362 moko 88: #define RECOURSION_LIMIT_NAME "max_recoursion"
1.369 moko 89: #define FILE_SIZE_LIMIT_NAME "max_file_size"
1.373 moko 90: #define LOCK_WAIT_TIMEOUT_NAME "lock_wait_timeout"
1.248 paf 91: #define CONF_METHOD_NAME "conf"
92: #define POST_PROCESS_METHOD_NAME "postprocess"
93: #define CLASS_PATH_NAME "CLASS_PATH"
1.277 paf 94: #define RESPONSE_BODY_FILE_NAME "file"
1.248 paf 95:
1.344 moko 96: #define DOWNLOAD_NAME_UPPER "DOWNLOAD"
97: #define BODY_NAME_UPPER "BODY"
98:
1.248 paf 99: // statics
100:
101: static const String charsets_name(CHARSETS_NAME);
102: static const String main_class_name(MAIN_CLASS_NAME);
103: static const String mime_types_name(MIME_TYPES_NAME);
1.330 moko 104: static const String strict_vars_name(STRICT_VARS_NAME);
1.357 moko 105: static const String prototype_name(PROTOTYPE_NAME);
1.362 moko 106: static const String limits_name(LIMITS_NAME);
1.369 moko 107: static const String loop_limit_name(LOOP_LIMIT_NAME);
1.361 moko 108: static const String recoursion_limit_name(RECOURSION_LIMIT_NAME);
1.369 moko 109: static const String file_size_limit_name(FILE_SIZE_LIMIT_NAME);
1.373 moko 110: static const String lock_wait_timeout_name(LOCK_WAIT_TIMEOUT_NAME);
1.361 moko 111:
1.248 paf 112: static const String conf_method_name(CONF_METHOD_NAME);
113: static const String post_process_method_name(POST_PROCESS_METHOD_NAME);
114: static const String class_path_name(CLASS_PATH_NAME);
1.277 paf 115: static const String response_body_file_name(RESPONSE_BODY_FILE_NAME);
1.248 paf 116:
1.344 moko 117: static const String download_name_upper(DOWNLOAD_NAME_UPPER);
118: static const String body_name_upper(BODY_NAME_UPPER);
119:
120: // more static
121:
122: static const String content_type_name_upper(HTTP_CONTENT_TYPE_UPPER);
123: static const String content_disposition_name_upper(CONTENT_DISPOSITION_UPPER);
124: static const String content_disposition_inline(CONTENT_DISPOSITION_INLINE);
125: static const String content_disposition_attachment(CONTENT_DISPOSITION_ATTACHMENT);
126:
1.248 paf 127: // defines
1.82 paf 128:
1.344 moko 129: #define CHARSET_NAME_UPPER "CHARSET"
130: #define LAST_MODIFIED_NAME_UPPER "LAST-MODIFIED"
131:
1.233 paf 132: // op.C
1.248 paf 133: VStateless_class& VClassMAIN_create();
1.123 paf 134:
1.157 parser 135: //
1.248 paf 136: Request::Request(SAPI_Info& asapi_info, Request_info& arequest_info,
1.325 moko 137: String::Language adefault_lang):
1.248 paf 138: // private
139: anti_endless_execute_recoursion(0),
140:
141: // public
1.335 moko 142: allow_class_replace(false),
1.248 paf 143: method_frame(0),
144: rcontext(0),
145: wcontext(0),
146: flang(adefault_lang),
1.191 paf 147: fconnection(0),
1.371 moko 148: fin_cycle(0),
1.307 misha 149: fskip(SKIP_NOTHING),
1.248 paf 150:
151: // public
1.257 paf 152: request_info(arequest_info),
1.248 paf 153: sapi_info(asapi_info),
1.359 moko 154: charsets(pa_UTF8_charset, pa_UTF8_charset, pa_UTF8_charset), // default charsets
1.248 paf 155:
156: main_class(VClassMAIN_create()),
1.260 paf 157: form(*new VForm(charsets, arequest_info)),
1.248 paf 158: mail(*new VMail),
159: response(*new VResponse(arequest_info, charsets)),
1.298 misha 160: cookie(*new VCookie(charsets, arequest_info)),
1.285 misha 161: console(*new VConsole),
1.248 paf 162:
163: // private
164: configure_admin_done(false),
165:
166: // private defaults
167: fdefault_lang(adefault_lang),
168: // private mime types
169: mime_types(0)
1.157 parser 170: {
1.261 paf 171: pa_register_thread_request(*this);
172:
1.248 paf 173: // file_no=0 => unknown
1.347 moko 174: file_list+="UNKNOWN";
175: file_list+="-body of process-"; // pseudo_file_no__process
1.186 paf 176:
1.178 paf 177: // maybe expire old caches
1.264 paf 178: cache_managers->maybe_expire();
1.178 paf 179:
1.157 parser 180: /// directly used
1.233 paf 181: // MAIN class, operators
1.353 moko 182: put_class(&main_class);
1.157 parser 183: // classes:
184: // table, file, random, mail, image, ...
1.248 paf 185: methoded_array().register_directly_used(*this);
1.157 parser 186:
187: /// methodless
1.354 moko 188:
1.157 parser 189: // env class
1.353 moko 190: put_class(new VEnv(asapi_info));
1.175 paf 191: // status class
1.353 moko 192: put_class(new VStatus());
1.157 parser 193: // request class
1.353 moko 194: put_class(new VRequest(arequest_info, charsets, form, asapi_info));
1.157 parser 195: // cookie class
1.353 moko 196: put_class(&cookie);
1.253 paf 197: // console class
1.353 moko 198: put_class(&console);
1.354 moko 199:
1.157 parser 200: /// methoded
1.354 moko 201:
1.157 parser 202: // response class
1.353 moko 203: put_class(&response);
1.157 parser 204: // form class
1.353 moko 205: put_class(&form);
1.213 paf 206: // mail class
1.353 moko 207: put_class(&mail);
1.157 parser 208: // math class
1.353 moko 209: put_class(new VMath);
1.248 paf 210: // memory class
1.353 moko 211: put_class(new VMemory);
1.117 paf 212: }
1.192 paf 213:
214: Request::~Request() {
215: #ifdef XML
216: // if for some strange reason xml generic errors failed to be reported, free them up
1.248 paf 217: if(const char* xml_generic_errors=xmlGenericErrors()) {
218: SAPI::log(sapi_info, "warning: unreported xmlGenericErrors: %s", xml_generic_errors);
1.341 moko 219: pa_free((void *)xml_generic_errors);
1.192 paf 220: }
221: #endif
222: }
1.236 paf 223:
1.248 paf 224: Value& Request::get_self() { return method_frame/*always have!*/->self(); }
1.192 paf 225:
1.355 moko 226: VStateless_class* Request::get_class(const String& name){
227: VStateless_class* result=classes().get(name);
1.313 misha 228: if(!result)
1.375 moko 229: if(const Method *method=main_class.get_element_method(autouse_method_name)){
1.364 moko 230: Value *vname=new VString(name);
231: CONSTRUCTOR_FRAME_ACTION(*method, 0 /*no parent*/, main_class, {
232: frame.store_params(&vname, 1);
233: // we don't need the result
234: call(frame);
235: });
236: result=classes().get(name);
237: }
1.309 misha 238: return result;
239: }
240:
1.356 moko 241: static void load_charset(HashStringValue::key_type akey, HashStringValue::value_type avalue, Request_charsets* charsets) {
1.359 moko 242: pa_charsets.load_charset(*charsets, akey, avalue->as_string());
1.208 paf 243: }
1.356 moko 244:
1.248 paf 245: void Request::configure_admin(VStateless_class& conf_class) {
1.208 paf 246: if(configure_admin_done)
1.356 moko 247: throw Exception(PARSER_RUNTIME, 0, "parser already configured");
1.208 paf 248: configure_admin_done=true;
249:
1.227 paf 250: // charsets must only be specified in method_frame config
1.208 paf 251: // so that users would not interfere
252:
253: /* $MAIN:CHARSETS[
254: $.charsetname1[/full/path/to/charset/file.cfg]
255: ...
256: ]
257: */
1.308 misha 258: if(Value* vcharsets=conf_class.get_element(charsets_name)) {
1.342 moko 259: if(!vcharsets->is_string()) {
1.248 paf 260: if(HashStringValue* charsets=vcharsets->get_hash())
1.281 paf 261: charsets->for_each<Request_charsets*>(load_charset, &this->charsets);
1.240 paf 262: else
1.356 moko 263: throw Exception(PARSER_RUNTIME, 0, "$" MAIN_CLASS_NAME ":" CHARSETS_NAME " must be hash");
1.342 moko 264: }
1.208 paf 265: }
266:
1.330 moko 267: #ifdef STRICT_VARS
1.332 moko 268: VVoid::strict_vars=false;
1.330 moko 269: if(Value* strict_vars=conf_class.get_element(strict_vars_name)) {
270: if(strict_vars->is_bool())
271: VVoid::strict_vars=strict_vars->as_bool();
1.357 moko 272: else
273: throw Exception(PARSER_RUNTIME, 0, "$" MAIN_CLASS_NAME ":" STRICT_VARS_NAME " must be bool");
274: }
275: #endif
276:
277: #ifdef OBJECT_PROTOTYPE
278: VClass::prototype=true;
279: if(Value* prototype=conf_class.get_element(prototype_name)) {
280: if(prototype->is_bool())
281: VClass::prototype=prototype->as_bool();
282: else
283: throw Exception(PARSER_RUNTIME, 0, "$" MAIN_CLASS_NAME ":" PROTOTYPE_NAME " must be bool");
1.330 moko 284: }
285: #endif
286:
1.362 moko 287: Value* limits=conf_class.get_element(limits_name);
288:
1.361 moko 289: pa_loop_limit=LOOP_LIMIT;
1.362 moko 290: if(limits)
291: if(Value* loop_limit=limits->get_element(loop_limit_name)) {
292: if(loop_limit->is_evaluated_expr()) {
293: pa_loop_limit=loop_limit->as_int();
294: if(pa_loop_limit==0) pa_loop_limit=INT_MAX;
295: } else
1.369 moko 296: throw Exception(PARSER_RUNTIME, 0, "$" MAIN_CLASS_NAME ":LIMITS." LOOP_LIMIT_NAME " must be int");
1.362 moko 297: }
1.361 moko 298:
299: pa_execute_recoursion_limit=EXECUTE_RECOURSION_LIMIT;
1.362 moko 300: if(limits)
301: if(Value* recoursion_limit=limits->get_element(recoursion_limit_name)) {
302: if(recoursion_limit->is_evaluated_expr()) {
303: pa_execute_recoursion_limit=recoursion_limit->as_int();
304: if(pa_execute_recoursion_limit==0) pa_execute_recoursion_limit=INT_MAX;
305: } else
1.369 moko 306: throw Exception(PARSER_RUNTIME, 0, "$" MAIN_CLASS_NAME ":LIMITS." RECOURSION_LIMIT_NAME " must be int");
307: }
308:
309: pa_file_size_limit=FILE_SIZE_LIMIT;
310: if(limits)
311: if(Value* file_size_limit=limits->get_element(file_size_limit_name)) {
312: if(file_size_limit->is_evaluated_expr()) {
313: double limit=file_size_limit->as_double();
314: if(limit >= (double)SSIZE_MAX)
315: throw Exception(PARSER_RUNTIME, 0, "$" MAIN_CLASS_NAME ":LIMITS." FILE_SIZE_LIMIT_NAME " must be less then %.15g", (double)SSIZE_MAX);
316: pa_file_size_limit=(size_t)limit;
317: if(pa_file_size_limit==0) pa_file_size_limit=SSIZE_MAX;
318: } else
319: throw Exception(PARSER_RUNTIME, 0, "$" MAIN_CLASS_NAME ":LIMITS." FILE_SIZE_LIMIT_NAME " must be number");
1.362 moko 320: }
1.361 moko 321:
1.372 moko 322: pa_lock_attempts=PA_LOCK_ATTEMPTS;
323: if(limits)
1.373 moko 324: if(Value* lock_wait_timeout=limits->get_element(lock_wait_timeout_name)) {
325: if(lock_wait_timeout->is_evaluated_expr()) {
326: double limit=lock_wait_timeout->as_double();
1.372 moko 327: if(limit >= 3600*24)
1.373 moko 328: throw Exception(PARSER_RUNTIME, 0, "$" MAIN_CLASS_NAME ":LIMITS." LOCK_WAIT_TIMEOUT_NAME " must be less then %d", 3600*24);
1.372 moko 329: pa_lock_attempts=(unsigned int)(limit*2)+1;
330: } else
1.373 moko 331: throw Exception(PARSER_RUNTIME, 0, "$" MAIN_CLASS_NAME ":LIMITS." LOCK_WAIT_TIMEOUT_NAME " must be number");
1.372 moko 332: }
333:
1.227 paf 334: // configure method_frame options
1.208 paf 335: // until someone with less privileges have overriden them
1.248 paf 336: methoded_array().configure_admin(*this);
1.208 paf 337: }
1.150 parser 338:
1.349 moko 339: const char* Request::get_exception_cstr(const Exception& e, Request::Exception_details& details) {
340:
1.269 paf 341: #define PA_URI_FORMAT "%s: "
1.349 moko 342: #define PA_COMMENT_TYPE_FORMAT "%s [%s]"
343:
1.269 paf 344: #define PA_ORIGIN_FILE_POS_FORMAT "%s(%d:%d): "
345: #define PA_SOURCE_FORMAT "'%s' "
1.349 moko 346:
347: #define PA_ORIGIN_FILE_POS_VALUE file_list[details.origin.file_no].cstr(), 1+details.origin.line, 1+details.origin.col,
348: #define PA_SOURCE_VALUE details.problem_source->cstr(),
349:
350: #define EXCEPTION_CSTR(f1,v1,f2,v2) \
351: snprintf(result, MAX_STRING, \
352: PA_URI_FORMAT \
353: f1 f2 \
354: PA_COMMENT_TYPE_FORMAT, \
355: request_info.uri, \
356: v1 v2 \
357: e.comment(), e.type() \
358: );
359:
1.269 paf 360: char* result=new(PointerFreeGC) char[MAX_STRING];
361:
362: if(details.problem_source) { // do we know the guy?
1.349 moko 363: if(details.origin.file_no) // do whe know where he came from?
364: EXCEPTION_CSTR(PA_ORIGIN_FILE_POS_FORMAT, PA_ORIGIN_FILE_POS_VALUE, PA_SOURCE_FORMAT, PA_SOURCE_VALUE)
365: else
366: EXCEPTION_CSTR(PA_SOURCE_FORMAT, PA_SOURCE_VALUE,,)
367: } else {
368: if(details.origin.file_no) // do whe know where he came from?
369: EXCEPTION_CSTR(PA_ORIGIN_FILE_POS_FORMAT, PA_ORIGIN_FILE_POS_VALUE,,)
370: else
371: EXCEPTION_CSTR(,,,)
372: }
1.269 paf 373:
374: return result;
375: }
1.272 paf 376:
377: void Request::configure() {
378: // configure admin options if not configured yet
379: if(!configure_admin_done)
380: configure_admin(main_class);
381:
382: // configure not-admin=user options
383: methoded_array().configure_user(*this);
384:
385: // $MAIN:MIME-TYPES
1.308 misha 386: if(Value* element=main_class.get_element(mime_types_name))
1.272 paf 387: if(Table *table=element->get_table())
388: mime_types=table;
389: }
1.64 paf 390: /**
391: load MAIN class, execute @main.
392: MAIN class consists of all the auto.p files we'd manage to find
393: plus
394: the file user requested us to process
395: all located classes become children of one another,
396: composing class we name 'MAIN'
1.180 paf 397:
398: @test log stack trace
399:
1.64 paf 400: */
1.248 paf 401: void Request::core(const char* config_filespec, bool config_fail_on_read_problem, bool header_only) {
1.169 parser 402: try {
1.211 paf 403: // loading config
404: if(config_filespec) {
1.248 paf 405: const String& filespec=*new String(config_filespec);
1.366 moko 406: use_file_directly(main_class, filespec, config_fail_on_read_problem, true /*file must exist if 'fail on read problem' not set*/);
1.29 paf 407: }
1.8 paf 408:
1.338 moko 409: // filling mail received
410: mail.fill_received(*this);
411:
1.72 paf 412: // loading auto.p files from document_root/..
413: // to the one beside requested file.
414: // all assigned bases from upper dir
415: {
1.248 paf 416: const char* after=request_info.path_translated;
417: size_t drlen=strlen(request_info.document_root);
418: if(memcmp(after, request_info.document_root, drlen)==0) {
1.115 paf 419: after+=drlen;
420: if(after[-1]=='/')
421: --after;
422: }
423:
1.248 paf 424: while(const char* before=strchr(after, '/')) {
425: String& sfile_spec=*new String;
426: if(after!=request_info.path_translated) {
1.366 moko 427: sfile_spec.append_strdup(request_info.path_translated, before-request_info.path_translated, String::L_CLEAN);
1.152 parser 428: sfile_spec << "/" AUTO_FILE_NAME;
429:
1.366 moko 430: use_file_directly(main_class, sfile_spec, true /*fail on read problem*/, false /*but ignore absence, sole user*/);
1.115 paf 431: }
1.317 misha 432: for(after=before+1;*after=='/';after++);
1.72 paf 433: }
434: }
1.34 paf 435:
1.272 paf 436: try {
437: // compile requested file
438: String& spath_translated=*new String;
439: spath_translated.append_help_length(request_info.path_translated, 0, String::L_TAINTED);
1.318 misha 440: use_file_directly(main_class, spath_translated);
1.272 paf 441:
442: configure();
443: } catch(...) {
444: configure(); // configure anyway, useful in @unhandled_exception [say, if they would want to mail by SMTP something]
445: rethrow;
446: }
1.25 paf 447:
448: // execute @main[]
1.382 moko 449: const String* body_string=execute_method(main_class, main_method_name);
1.41 paf 450: if(!body_string)
1.366 moko 451: throw Exception(PARSER_RUNTIME, 0, "'" MAIN_METHOD_NAME "' method not found");
1.79 paf 452:
1.250 paf 453: // extract response body
1.344 moko 454: Value* body_value=response.fields().get(download_name_upper); // $response:download?
1.250 paf 455: bool as_attachment=body_value!=0;
456: if(!body_value)
1.344 moko 457: body_value=response.fields().get(body_name_upper); // $response:body
1.250 paf 458: if(!body_value)
459: body_value=new VString(*body_string); // just result of ^main[]
460:
1.119 paf 461: // @postprocess
1.383 ! moko 462: if(const Method *method=main_class.get_method(post_process_method_name)) {
! 463: // preparing to pass parameters to
! 464: // @postprocess[data]
! 465: METHOD_FRAME_ACTION(*method, 0 /*no parent*/, main_class, {
! 466: frame.store_params(&body_value, 1);
! 467: call(frame);
! 468: body_value=&frame.result();
! 469: });
! 470: }
1.90 paf 471:
1.303 misha 472: VFile* body_file=body_value->as_vfile(flang, &charsets);
1.41 paf 473:
1.45 paf 474: // OK. write out the result
1.248 paf 475: output_result(body_file, header_only, as_attachment);
1.183 paf 476:
1.171 parser 477: } catch(const Exception& e) { // request handling problem
1.268 paf 478: try {
1.76 paf 479: // we're returning not result, but error explanation
1.269 paf 480:
481: Request::Exception_details details=get_details(e);
482: const char* exception_cstr=get_exception_cstr(e, details);
1.258 paf 483:
484: // reset language to default
485: flang=fdefault_lang;
486:
487: // reset response
488: response.fields().clear();
489:
490: // this is what we'd return in $response:body
491: const String* body_string=0;
492:
493: // maybe we'd be lucky enough as to report an error
494: // in a gracefull way...
1.383 ! moko 495: if(const Method *method=main_class.get_method(*new String(UNHANDLED_EXCEPTION_METHOD_NAME))) {
! 496: // preparing to pass parameters to
! 497: // @unhandled_exception[exception;stack]
! 498:
! 499: // $stack[^table::create{name file lineno colno}]
! 500: Table::columns_type stack_trace_columns(new ArrayString);
! 501: *stack_trace_columns+=new String("name");
! 502: *stack_trace_columns+=new String("file");
! 503: *stack_trace_columns+=new String("lineno");
! 504: *stack_trace_columns+=new String("colno");
! 505: Table& stack_trace=*new Table(stack_trace_columns);
! 506: if(!exception_trace.is_empty()/*signed!*/)
! 507: for(size_t i=exception_trace.bottom_index(); i<exception_trace.top_index(); i++) {
! 508: Trace trace=exception_trace.get(i);
! 509: Table::element_type row(new ArrayString);
! 510:
! 511: *row+=trace.name(); // name column
! 512: Operation::Origin origin=trace.origin();
! 513: if(origin.file_no) {
! 514: *row+=new String(file_list[origin.file_no], String::L_TAINTED); // 'file' column
! 515: *row+=new String(String::Body::Format(1+origin.line), String::L_CLEAN); // 'lineno' column
! 516: *row+=new String(String::Body::Format(1+origin.col), String::L_CLEAN); // 'colno' column
! 517: }
! 518: stack_trace+=row;
1.233 paf 519: }
1.383 ! moko 520:
! 521: // future $response:body=
! 522: // execute ^unhandled_exception[exception;stack]
! 523: 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)
! 524:
! 525: Value *params[]={&details.vhash, new VTable(&stack_trace)};
! 526: METHOD_FRAME_ACTION(*method, 0 /*no caller*/, main_class, {
! 527: frame.store_params(params, 2);
! 528: call(frame);
! 529: body_string=&frame.result().as_string();
! 530: });
1.258 paf 531: }
532:
1.273 paf 533: // conditionally log it
534: Value* vhandled=details.vhash.hash().get(exception_handled_part_name);
535: if(!vhandled || !vhandled->as_bool()) {
536: SAPI::log(sapi_info, "%s", exception_cstr);
537: }
538:
1.381 moko 539: if(body_string) { // could report an error beautifully?
540: VString body_vstring(*body_string);
541: VFile* body_file=body_vstring.as_vfile(flang, &charsets);
542: // write it out the error
543: output_result(body_file, header_only, false);
544: } else {
545: // doing that ugly
546: SAPI::send_error(sapi_info, exception_cstr, !strcmp(e.type(), "file.missing") ? "404" : "500");
547: }
1.287 misha 548:
1.273 paf 549: } catch(const Exception& e) { // exception in unhandled exception
1.269 paf 550: Request::Exception_details details=get_details(e);
551: const char* exception_cstr=get_exception_cstr(e, details);
1.380 moko 552: // unconditionally log the beast in exception handler
553: throw Exception(0, 0, "Unhandled exception in %s", exception_cstr);
1.268 paf 554: }
1.1 paf 555: }
556: }
557:
1.266 paf 558: uint Request::register_file(String::Body file_spec) {
1.248 paf 559: file_list+=file_spec;
560: return file_list.count()-1;
561: }
562:
1.366 moko 563: void Request::use_file_directly(VStateless_class& aclass, const String& file_spec, bool fail_on_read_problem, bool fail_on_file_absence) {
1.73 paf 564: // cyclic dependence check
1.318 misha 565: if(used_files.get(file_spec))
1.248 paf 566: return;
1.318 misha 567: used_files.put(file_spec, true);
568:
569: if(fail_on_read_problem && !fail_on_file_absence) // ignore file absence if asked for
570: if(!entry_exists(file_spec))
571: return;
572:
573: if(const char* source=file_read_text(charsets, file_spec, fail_on_read_problem))
574: use_buf(aclass, source, 0, register_file(file_spec));
575: }
576:
577:
1.349 moko 578: void Request::use_file(VStateless_class& aclass, const String& file_name, const String* use_filespec/*absolute*/) {
1.326 misha 579: if(file_name.is_empty())
1.366 moko 580: throw Exception(PARSER_RUNTIME, 0, "usage failed - no filename was specified");
1.326 misha 581:
1.318 misha 582: const String* filespec=0;
583:
584: if(file_name.first_char()=='/') //absolute path? [no need to scan MAIN:CLASS_PATH]
585: filespec=&absolute(file_name);
586: else if(use_filespec){ // search in current dir first
1.331 misha 587: size_t last_slash_pos=use_filespec->strrpbrk("/");
588: if(last_slash_pos!=STRING_NOT_FOUND)
589: filespec=file_exist(use_filespec->mid(0, last_slash_pos), file_name); // found in current dir?
1.318 misha 590: }
591:
592: if(!filespec){
593: // prevent multiple scan CLASS_PATH for searching one file
594: if(searched_along_class_path.get(file_name))
595: return;
596: searched_along_class_path.put(file_name, true);
1.308 misha 597: if(Value* element=main_class.get_element(class_path_name)) {
1.233 paf 598: if(element->is_string()) {
1.318 misha 599: filespec=file_exist(absolute(element->as_string()), file_name); // found at class_path?
1.233 paf 600: } else if(Table *table=element->get_table()) {
1.318 misha 601: for(size_t i=table->count(); i--; ) {
1.248 paf 602: const String& path=*(*table->get(i))[0];
1.318 misha 603: if(filespec=file_exist(absolute(path), file_name))
1.233 paf 604: break; // found along class_path
605: }
606: } else
1.366 moko 607: throw Exception(PARSER_RUNTIME, 0, "$" CLASS_PATH_NAME " must be string or table");
1.318 misha 608: if(!filespec)
1.366 moko 609: throw Exception(PARSER_RUNTIME, &file_name, "not found along $" MAIN_CLASS_NAME ":" CLASS_PATH_NAME);
1.318 misha 610: } else
1.366 moko 611: throw Exception(PARSER_RUNTIME, &file_name, "usage failed - no $" MAIN_CLASS_NAME ":" CLASS_PATH_NAME " were specified");
1.148 parser 612: }
1.230 paf 613:
1.318 misha 614: use_file_directly(aclass, *filespec);
1.16 paf 615: }
616:
1.364 moko 617: void Request::use_file(const String& file_name, const String* use_filespec/*absolute*/, Operation::Origin origin) {
1.349 moko 618: static String use("USE");
619: try {
1.364 moko 620: static VHash* voptions=new VHash();
1.376 moko 621: if(const Method *method=main_class.get_method(use_method_name)){
1.364 moko 622: Value *params[]={new VString(file_name), voptions};
623: voptions->hash().put(origin_key, new VString(*use_filespec));
624:
625: CONSTRUCTOR_FRAME_ACTION(*method, 0 /*no parent*/, main_class, {
626: frame.store_params(params, 2);
627: // we don't need the result
628: call(frame);
629: });
630: }
1.349 moko 631: } catch (...) {
632: exception_trace.push(Trace(&use, origin));
633: rethrow;
634: }
635: }
1.208 paf 636:
1.358 moko 637: void Request::use_buf(VStateless_class& aclass, const char* source, const String* main_alias, uint file_no, int line_no_offset) {
638: // temporary zero @conf to avoid it second execution
1.248 paf 639: Temp_method temp_method_conf(aclass, conf_method_name, 0);
1.358 moko 640: // temporary zero @auto to avoid it second execution
1.248 paf 641: Temp_method temp_method_auto(aclass, auto_method_name, 0);
1.233 paf 642:
1.295 misha 643: // compile loaded classes
644: ArrayClass& cclasses=compile(&aclass, source, main_alias, file_no, line_no_offset);
1.212 paf 645:
1.248 paf 646: VString* vfilespec=
647: new VString(*new String(file_list[file_no], String::L_TAINTED));
1.295 misha 648:
649: for(size_t i=0; i<cclasses.count(); i++){
650: VStateless_class& cclass=*cclasses.get(i);
1.296 misha 651:
652: // locate and execute possible @conf[] static
1.382 moko 653: if(execute_method_if_exists(cclass, conf_method_name, vfilespec))
1.295 misha 654: configure_admin(cclass/*, executed.method->name*/);
655:
656: // locate and execute possible @auto[] static
1.382 moko 657: execute_method_if_exists(cclass, auto_method_name, vfilespec);
1.336 moko 658:
659: cclass.enable_default_setter();
1.295 misha 660: }
1.19 paf 661: }
662:
1.248 paf 663: const String& Request::relative(const char* apath, const String& relative_name) {
1.341 moko 664: char *hpath=pa_strdup(apath);
1.248 paf 665: String& result=*new String;
666: if(rsplit(hpath, '/')) // if something/splitted
1.217 paf 667: result << hpath << "/";
1.248 paf 668: result << relative_name;
669: return result;
1.19 paf 670: }
671:
1.77 paf 672: const String& Request::absolute(const String& relative_name) {
1.217 paf 673: if(relative_name.first_char()=='/') {
1.341 moko 674: String& result=*new String(pa_strdup(request_info.document_root));
1.104 paf 675: result << relative_name;
1.19 paf 676: return result;
677: } else
1.248 paf 678: if(relative_name.pos("://")!=STRING_NOT_FOUND // something like "http://xxx"
1.247 paf 679: #ifdef WIN32
680: || relative_name.pos(":")==1 // DRIVE:
681: || relative_name.starts_with("\\\\") // UNC1
682: || relative_name.starts_with("//") // UNC2
683: #endif
684: )
685: return relative_name;
686: else
1.248 paf 687: return relative(request_info.path_translated, relative_name);
1.1 paf 688: }
1.45 paf 689:
1.267 paf 690: #ifndef DOXYGEN
691: class Add_header_attribute_info
692: {
693: public:
694: Add_header_attribute_info(Request& ar) : r(ar), add_last_modified(true) {}
695: Request& r;
696: bool add_last_modified;
697: };
698: #endif
1.344 moko 699: static void add_header_attribute(HashStringValue::key_type name, HashStringValue::value_type value, Add_header_attribute_info* info) {
700: if(name==BODY_NAME_UPPER || name==DOWNLOAD_NAME_UPPER || name==CHARSET_NAME_UPPER)
1.101 paf 701: return;
1.290 misha 702:
1.345 moko 703: if(name==LAST_MODIFIED_NAME_UPPER)
704: info->add_last_modified=false;
705:
1.316 misha 706: const char* aname=String(name, String::L_URI).untaint_and_transcode_cstr(String::L_URI, &info->r.charsets);
1.101 paf 707:
1.267 paf 708: SAPI::add_header_attribute(info->r.sapi_info,
1.345 moko 709: aname,
1.316 misha 710: attributed_meaning_to_string(*value, String::L_URI, false).untaint_and_transcode_cstr(String::L_URI, &info->r.charsets)
1.303 misha 711: );
1.267 paf 712: }
713:
1.366 moko 714: static void output_sole_piece(Request& r, bool header_only, VFile& body_file, Value* body_file_content_type) {
1.267 paf 715: // transcode text body when "text/*" or simple result
716: String::C output(body_file.value_ptr(), body_file.value_size());
717: if(!body_file_content_type/*vstring.as_vfile*/ || body_file_content_type->as_string().pos("text/")==0)
1.366 moko 718: output=Charset::transcode(output, r.charsets.source(), r.charsets.client());
1.267 paf 719:
1.311 misha 720: // prepare header: Content-Length
721: SAPI::add_header_attribute(r.sapi_info, HTTP_CONTENT_LENGTH, format(output.length, "%u"));
1.267 paf 722:
723: // send header
724: SAPI::send_header(r.sapi_info);
725:
726: // send body
727: if(!header_only)
728: SAPI::send_body(r.sapi_info, output.str, output.length);
729: }
730:
731: #ifndef DOXYGEN
732: struct Range
733: {
734: size_t start;
735: size_t end;
736: };
737: #endif
1.313 misha 738: static void parse_range(const String* s, Array<Range> &ar) {
1.267 paf 739: const char *p = s->cstr();
740: if(s->starts_with("bytes="))
741: p += 6;
742: Range r;
743: while(*p){
744: r.start = (size_t)-1;
745: r.end = (size_t)-1;
746: if(*p >= '0' && *p <= '9'){
747: r.start = atol(p);
748: while(*p>='0' && *p<='9') ++p;
749: }
750: if(*p++ != '-') break;
751: if(*p >= '0' && *p <= '9'){
752: r.end = atol(p);
753: while(*p>='0' && *p<='9') ++p;
754: }
755: if(*p == ',') ++p;
756: ar += r;
757: }
1.101 paf 758: }
1.267 paf 759:
1.366 moko 760: static void output_pieces(Request& r, bool header_only, const String& filename, size_t content_length, Value& date, bool add_last_modified) {
1.315 misha 761: SAPI::add_header_attribute(r.sapi_info, "accept-ranges", "bytes");
1.270 paf 762:
1.377 moko 763: const size_t BUFSIZE = 128*0x400;
1.267 paf 764: char buf[BUFSIZE];
1.339 moko 765: const char *range = SAPI::Env::get(r.sapi_info, "HTTP_RANGE");
1.267 paf 766: size_t offset=0;
767: size_t part_length=content_length;
768: if(range){
769: Array<Range> ar;
770: parse_range(new String(range), ar);
771: size_t count = ar.count();
772: if(count == 1){
773: Range &rg = ar.get_ref(0);
774: if(rg.start == (size_t)-1 && rg.end == (size_t)-1){
1.311 misha 775: SAPI::add_header_attribute(r.sapi_info, HTTP_STATUS, "416 Requested Range Not Satisfiable");
1.267 paf 776: return;
777: }
778: if(rg.start == (size_t)-1 && rg.end != (size_t)-1){
779: rg.start = content_length - rg.end;
780: rg.end = content_length;
781: offset += rg.start;
782: part_length = rg.end-rg.start;
783: }else if(rg.start != (size_t)-1 && rg.end == (size_t)-1){
784: rg.end = content_length-1;
785: offset += rg.start;
786: part_length -= rg.start;
787: }
788: if(part_length == 0){
1.311 misha 789: SAPI::add_header_attribute(r.sapi_info, HTTP_STATUS, "204 No Content");
1.267 paf 790: return;
791: }
1.311 misha 792: SAPI::add_header_attribute(r.sapi_info, HTTP_STATUS, "206 Partial Content");
1.267 paf 793: snprintf(buf, BUFSIZE, "bytes %u-%u/%u", rg.start, rg.end, content_length);
1.315 misha 794: SAPI::add_header_attribute(r.sapi_info, "content-range", buf);
1.267 paf 795: }else if(count != 0){
1.311 misha 796: SAPI::add_header_attribute(r.sapi_info, HTTP_STATUS, "501 Not Implemented");
1.267 paf 797: return;
798: }
799: }
800:
801:
1.311 misha 802: SAPI::add_header_attribute(r.sapi_info, HTTP_CONTENT_LENGTH, format(part_length, "%u"));
1.267 paf 803:
1.314 misha 804: if(add_last_modified)
1.315 misha 805: SAPI::add_header_attribute(r.sapi_info, "last-modified", attributed_meaning_to_string(date, String::L_AS_IS, true).cstr());
1.314 misha 806:
1.267 paf 807: SAPI::send_header(r.sapi_info);
808:
809: const String& filespec=r.absolute(filename);
810:
811: size_t sent = 0;
812: if(!header_only){
813: size_t to_read = 0;
814: size_t size = 0;
815: do{
1.378 moko 816: to_read = part_length < BUFSIZE ? part_length : BUFSIZE;
1.379 moko 817: File_read_result read_result=file_read_binary(filespec, true /*fail on problem*/, buf, offset, to_read);
1.267 paf 818: to_read=read_result.length;
819: if(to_read == 0)
820: break;
821: offset += to_read;
822:
823: size = SAPI::send_body(r.sapi_info, read_result.str, to_read);
824: sent += size;
825: if(size != to_read)
826: break;
827: part_length -= to_read;
828: }while(part_length);
829: }
830: }
831:
1.248 paf 832: void Request::output_result(VFile* body_file, bool header_only, bool as_attachment) {
1.51 paf 833: // header: cookies
1.248 paf 834: cookie.output_result(sapi_info);
1.51 paf 835:
1.314 misha 836: // _file_ content-type might be specified
1.267 paf 837: Value* body_file_content_type=body_file->fields().get(content_type_name);
1.92 paf 838:
1.314 misha 839: // Content-Disposition
1.267 paf 840: Value* vfile_name=body_file->fields().get(name_name);
841: if(!vfile_name) {
842: vfile_name=body_file->fields().get(response_body_file_name);
1.313 misha 843: if(vfile_name) {
844: char* name_cstr=vfile_name->as_string().cstrm();
1.274 paf 845: if(char *after_slash=rsplit(name_cstr, '\\'))
846: name_cstr=after_slash;
847: if(char *after_slash=rsplit(name_cstr, '/'))
848: name_cstr=after_slash;
1.327 misha 849: vfile_name=new VString(*new String(name_cstr));
1.274 paf 850: }
1.267 paf 851: }
852: if(vfile_name) {
853: const String& sfile_name=vfile_name->as_string();
854: if(sfile_name!=NONAME_DAT) {
1.283 misha 855: VHash& hash=*new VHash();
856: HashStringValue &h=hash.hash();
1.288 misha 857: h.put(value_name, new VString( as_attachment ? content_disposition_attachment : content_disposition_inline ));
1.343 moko 858: h.put(content_disposition_filename_name, new VString(*new String(sfile_name, String::L_HTTP_HEADER)));
1.283 misha 859:
1.344 moko 860: response.fields().put(content_disposition_name_upper, &hash);
1.267 paf 861:
862: if(!body_file_content_type)
863: body_file_content_type=new VString(mime_type_of(sfile_name.cstr()));
1.111 paf 864: }
1.267 paf 865: }
866:
1.312 misha 867: // set Content-Type
1.314 misha 868: if(body_file_content_type) {
869: // body file content type
1.344 moko 870: response.fields().put(content_type_name_upper, body_file_content_type);
1.314 misha 871: } else {
872: // default content type
1.344 moko 873: response.fields().put_dont_replace(content_type_name_upper, new VString(*new String(DEFAULT_CONTENT_TYPE)));
1.314 misha 874: }
1.312 misha 875:
1.314 misha 876: // prepare header: $response:fields without :body, :download and :charset
1.267 paf 877: Add_header_attribute_info info(*this);
1.281 paf 878: response.fields().for_each<Add_header_attribute_info*>(add_header_attribute, &info);
1.50 paf 879:
1.267 paf 880: if(Value* vresponse_body_file=body_file->fields().get(response_body_file_name)) {
1.314 misha 881: // $response:[download|body][$.file[filespec]] -- optput specified file
1.267 paf 882: const String& sresponse_body_file=vresponse_body_file->as_string();
1.367 moko 883: uint64_t content_length=0;
1.267 paf 884: time_t atime=0, mtime=0, ctime=0;
1.366 moko 885: file_stat(absolute(sresponse_body_file), content_length, atime, mtime, ctime);
1.267 paf 886:
887: VDate* vdate=0;
888: if(Value* v=body_file->fields().get("mdate")) {
1.308 misha 889: if(Value* vdatep=v->as(VDATE_TYPE))
1.267 paf 890: vdate=static_cast<VDate*>(vdatep);
891: else
1.286 misha 892: throw Exception(PARSER_RUNTIME, 0, "mdate must be a date");
1.267 paf 893: }
894: if(!vdate)
1.346 moko 895: vdate=new VDate((pa_time_t)mtime);
1.62 paf 896:
1.368 moko 897: output_pieces(*this, header_only, sresponse_body_file, (size_t)content_length, *vdate, info.add_last_modified);
1.267 paf 898: } else {
1.314 misha 899: if(body_file_content_type)
900: if(HashStringValue *hash=body_file_content_type->get_hash())
901: body_file_content_type=hash->get(value_name);
902:
1.366 moko 903: output_sole_piece(*this, header_only, *body_file, body_file_content_type);
1.267 paf 904: }
1.50 paf 905: }
1.104 paf 906:
1.328 misha 907: const String& Request::mime_type_of(const String* file_name) {
908: return mime_type_of(file_name?file_name->taint_cstr(String::L_FILE_SPEC):0);
909: }
910:
1.248 paf 911: const String& Request::mime_type_of(const char* user_file_name_cstr) {
1.104 paf 912: if(mime_types)
1.248 paf 913: if(const char* cext=strrchr(user_file_name_cstr, '.')) {
914: String sext(++cext);
1.246 paf 915: Table::Action_options options;
1.342 moko 916: if(mime_types->locate(0, sext.change_case(charsets.source(), String::CC_LOWER), options)) {
1.313 misha 917: if(const String* result=mime_types->item(1))
918: return *result;
1.104 paf 919: else
1.366 moko 920: throw Exception(PARSER_RUNTIME, 0, MIME_TYPES_NAME " table column elements must not be empty");
1.342 moko 921: }
1.104 paf 922: }
1.248 paf 923:
924: return *new String("application/octet-stream");
925: }
926:
1.365 moko 927: const String* Request::get_used_filespec(uint file_no){
1.318 misha 928: if(file_no < file_list.count())
929: return new String(file_list[file_no], String::L_TAINTED);
930: return 0;
931: }
932:
1.248 paf 933: #ifdef XML
1.280 paf 934: xmlChar* Request::transcode(const String& s) {
1.248 paf 935: return charsets.source().transcode(s);
936: }
937:
1.280 paf 938: xmlChar* Request::transcode(const String::Body s) {
1.248 paf 939: return charsets.source().transcode(s);
940: }
941:
1.280 paf 942: const String& Request::transcode(const xmlChar* s) {
1.248 paf 943: return charsets.source().transcode(s);
1.233 paf 944: }
1.248 paf 945: #endif
946:
1.349 moko 947: Request::Exception_details Request::get_details(const Exception& e) {
948: const String* problem_source=e.problem_source();
949: VHash& vhash=*new VHash; HashStringValue& hash=vhash.hash();
950: Operation::Origin origin={0, 0, 0};
1.248 paf 951:
1.349 moko 952: if(!exception_trace.is_empty()) {
953: Trace bottom=exception_trace.bottom_value();
1.350 moko 954: origin=bottom.origin();
955: if(!problem_source) { // we don't know who trigged the bug
956: problem_source=bottom.name(); // we usually know source of next-from-throw-point exception did that
957: exception_trace.set_bottom_index(exception_trace.bottom_index()+1);
958: } else if (bottom.name()==problem_source) { // it is that same guy?
1.349 moko 959: exception_trace.set_bottom_index(exception_trace.bottom_index()+1); // throw away that trace
960: } else {
961: // stack top contains not us, leaving intact to help ^throw
1.279 paf 962: }
1.248 paf 963: }
964:
965: // $.type
966: if(const char* type=e.type(true))
967: hash.put(exception_type_part_name, new VString(*new String(type)));
968:
969: // $.source
1.349 moko 970: if(problem_source)
971: hash.put(exception_source_part_name, new VString(*new String(*problem_source, String::L_TAINTED)));
1.248 paf 972:
1.349 moko 973: // $.file $.lineno $.colno
974: if(origin.file_no){
1.347 moko 975: hash.put("file", new VString(*new String(file_list[origin.file_no], String::L_TAINTED)));
976: hash.put("lineno", new VInt(1+origin.line));
977: hash.put("colno", new VInt(1+origin.col));
1.248 paf 978: }
979:
980: // $.comment
981: if(const char* comment=e.comment(true))
1.349 moko 982: hash.put(exception_comment_part_name, new VString(*new String(comment, String::L_TAINTED)));
1.248 paf 983:
984: // $.handled(0)
1.299 misha 985: hash.put(exception_handled_part_name, &VBool::get(false));
1.233 paf 986:
1.349 moko 987: return Request::Exception_details(origin, problem_source, vhash);
1.133 parser 988: }
1.337 moko 989:
990: Temp_value_element::Temp_value_element(Request& arequest, Value& awhere, const String& aname, Value* awhat) :
991: frequest(arequest),
992: fwhere(awhere),
993: fname(aname),
994: saved(awhere.get_element(aname))
995: {
996: Junction* junction;
997: if(saved && (junction=saved->get_junction()) && junction->is_getter)
998: saved=0;
999: frequest.put_element(fwhere, aname, awhat);
1000: }
1001:
1002: Temp_value_element::~Temp_value_element() {
1003: frequest.put_element(fwhere, fname, saved ? saved : VVoid::get());
1004: }
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