Annotation of parser3/src/main/pa_request.C, revision 1.93
1.54 paf 1: /** @file
1.55 paf 2: Parser: request class main part. @see compile.C and execute.C.
3:
1.9 paf 4: Copyright (c) 2001 ArtLebedev Group (http://www.artlebedev.com)
1.55 paf 5:
1.14 paf 6: Author: Alexander Petrosyan <paf@design.ru> (http://design.ru/paf)
1.9 paf 7:
1.93 ! paf 8: $Id: pa_request.C,v 1.92 2001/04/03 07:20:53 paf Exp $
1.1 paf 9: */
10:
1.70 paf 11: #include "pa_config_includes.h"
1.19 paf 12:
1.69 paf 13: #include "pa_sapi.h"
1.53 paf 14: #include "pa_common.h"
1.1 paf 15: #include "pa_request.h"
1.3 paf 16: #include "pa_wwrapper.h"
17: #include "pa_vclass.h"
1.11 paf 18: #include "_root.h"
1.17 paf 19: #include "_table.h"
1.82 paf 20: #include "_file.h"
1.31 paf 21: #include "pa_globals.h"
1.30 paf 22: #include "pa_vint.h"
23: #include "pa_vmframe.h"
1.32 paf 24: #include "pa_types.h"
1.78 paf 25: #include "pa_vtable.h"
1.89 paf 26: #include "_random.h"
1.90 paf 27: #include "pa_vfile.h"
1.3 paf 28:
1.72 paf 29: /// $limits.post_max_size default 10M
30: const size_t MAX_POST_SIZE_DEFAULT=10*0x400*400;
31:
1.82 paf 32: /// content type of exception response, when no @MAIN:exception handler defined
33: const char *UNHANDLED_EXCEPTION_CONTENT_TYPE="text/plain";
34:
35: /// content type of response when no $MAIN:defaults.content-type defined
36: const char *DEFAULT_CONTENT_TYPE="text/html";
37:
1.72 paf 38: //
1.28 paf 39: Request::Request(Pool& apool,
1.33 paf 40: Info& ainfo,
1.43 paf 41: String::Untaint_lang adefault_lang) : Pooled(apool),
1.3 paf 42: stack(apool),
1.41 paf 43: ROOT(apool),
44: env(apool),
45: form(apool),
46: request(apool, *this),
47: response(apool),
1.51 paf 48: cookie(apool),
1.3 paf 49: fclasses(apool),
1.43 paf 50: fdefault_lang(adefault_lang), flang(adefault_lang),
51: info(ainfo),
1.85 paf 52: used_files(apool),
1.74 paf 53: default_content_type(0),
1.87 paf 54: mime_types(0)
1.3 paf 55: {
1.27 paf 56: // root superclass,
1.3 paf 57: // parent of all classes,
58: // operators holder
1.41 paf 59: initialize_root_class(pool(), ROOT);
60: classes().put(*root_class_name, &ROOT);
1.27 paf 61: // table class
62: classes().put(*table_class_name, table_class);
1.82 paf 63: // file class
64: classes().put(*file_class_name, file_class);
1.89 paf 65: // random class
66: classes().put(*random_class_name, random_class);
1.3 paf 67: // env class
1.41 paf 68: classes().put(*env_class_name, &env);
1.27 paf 69: // form class
1.41 paf 70: classes().put(*form_class_name, &form);
1.40 paf 71: // request class
1.41 paf 72: classes().put(*request_class_name, &request);
73: // response class
74: classes().put(*response_class_name, &response);
1.51 paf 75: // cookie class
76: classes().put(*cookie_class_name, &cookie);
1.3 paf 77: }
1.1 paf 78:
1.62 paf 79: static void add_header_attribute(const Hash::Key& aattribute, Hash::Val *ameaning,
80: void *info) {
1.48 paf 81: String *attribute_to_exclude=static_cast<String *>(info);
82: if(aattribute==*attribute_to_exclude)
1.45 paf 83: return;
84:
1.62 paf 85: Value& lmeaning=*static_cast<Value *>(ameaning);
86: Pool& pool=lmeaning.pool();
1.45 paf 87:
1.62 paf 88: String attribute(pool);
1.69 paf 89: SAPI::add_header_attribute(pool,
1.62 paf 90: attribute.append(aattribute, String::UL_HEADER, true).cstr(),
91: attributed_meaning_to_string(lmeaning).cstr());
1.45 paf 92: }
93:
1.64 paf 94: /**
95: load MAIN class, execute @main.
96: MAIN class consists of all the auto.p files we'd manage to find
97: plus
98: the file user requested us to process
99: all located classes become children of one another,
100: composing class we name 'MAIN'
101: */
1.63 paf 102: void Request::core(const char *root_auto_path, bool root_auto_fail,
103: const char *site_auto_path, bool site_auto_fail,
1.62 paf 104: bool header_only) {
1.29 paf 105: VStateless_class *main_class=0;
1.41 paf 106: bool need_rethrow=false; Exception rethrow_me;
1.3 paf 107: TRY {
1.29 paf 108: char *auto_filespec=(char *)malloc(MAX_STRING);
109:
1.63 paf 110: // loading root auto.p
111: if(root_auto_path) {
1.77 paf 112: String& filespec=*NEW String(pool());
1.88 paf 113: filespec.APPEND_CLEAN(root_auto_path, 0, "root_auto", 0);
1.77 paf 114: filespec.APPEND_CONST("/" AUTO_FILE_NAME);
1.29 paf 115: main_class=use_file(
1.77 paf 116: filespec, root_auto_fail,
1.37 paf 117: main_class_name, main_class);
1.29 paf 118: }
119:
1.85 paf 120: // $MAIN:LIMITS hash used here,
1.72 paf 121: // until someone with less privileges have overriden them
1.78 paf 122: {
123: Value *limits=main_class?main_class->get_element(*limits_name):0;
124: // $limits.post_max_size default 10M
125: Value *element=limits?limits->get_element(*post_max_size_name):0;
1.84 paf 126: size_t value=element?(size_t)element->as_double():0;
1.78 paf 127: size_t post_max_size=value?value:MAX_POST_SIZE_DEFAULT;
128:
129: form.fill_fields(*this, post_max_size);
130: }
1.72 paf 131:
1.78 paf 132: // filling cookies
1.72 paf 133: cookie.fill_fields(*this);
134:
1.64 paf 135: // loading site auto.p
1.63 paf 136: if(site_auto_path) {
1.77 paf 137: String& filespec=*NEW String(pool());
1.88 paf 138: filespec.APPEND_CLEAN(site_auto_path, 0, "site_auto", 0);
1.77 paf 139: filespec.APPEND_CONST("/" AUTO_FILE_NAME);
1.37 paf 140: main_class=use_file(
1.77 paf 141: filespec, site_auto_fail,
1.37 paf 142: main_class_name, main_class);
1.29 paf 143: }
1.8 paf 144:
1.72 paf 145: // loading auto.p files from document_root/..
146: // to the one beside requested file.
147: // all assigned bases from upper dir
148: {
149: /* /document/root */
1.77 paf 150: char *file_spec=
1.72 paf 151: (char *)malloc(strlen(info.path_translated)+strlen(AUTO_FILE_NAME)+1);
1.83 paf 152: size_t document_root_size=strlen(info.document_root);
153: if(info.document_root[document_root_size-1]=='/')
154: document_root_size--;
155: memcpy(file_spec, info.document_root, document_root_size);
1.72 paf 156:
157: /* /requested/file.html */
158: char *branches=(char *)malloc(strlen(info.path_translated)+1);
1.83 paf 159: strcpy(branches, info.path_translated+document_root_size);
1.72 paf 160: char *next=branches;
1.83 paf 161: char *append_here=file_spec+document_root_size;
1.72 paf 162:
163: size_t slash_auto_p_size=strlen("/" AUTO_FILE_NAME);
164: while(true) {
165: char *step=lsplit(&next, '/');
166: if(next) { // not 'file.html' part
167: size_t step_size=strlen(step);
168: memcpy(append_here, step, step_size);
169: append_here+=step_size;
170: memcpy(append_here, "/" AUTO_FILE_NAME, slash_auto_p_size+1);
171: append_here++/* / */;
172:
1.77 paf 173: String& sfile_spec=*NEW String(pool());
1.88 paf 174: sfile_spec.APPEND_CLEAN(file_spec, 0, "scanned", 0);
1.77 paf 175: main_class=use_file(sfile_spec, false/*ignore read problem*/,
1.72 paf 176: main_class_name, main_class);
177: } else
178: break;
179: }
180: }
1.34 paf 181:
1.72 paf 182: // compiling requested file
1.77 paf 183: String& spath_translated=*NEW String(pool());
1.88 paf 184: spath_translated.APPEND_CLEAN(info.path_translated, 0, "user-request", 0);
1.77 paf 185: main_class=use_file(spath_translated, true/*don't ignore read problem*/,
1.72 paf 186: main_class_name, main_class);
1.7 paf 187:
1.85 paf 188: // $MAIN:DEFAULTS
1.78 paf 189: Value *defaults=main_class->get_element(*defaults_name);
1.75 paf 190: // value must be allocated on request's pool for that pool used on
191: // meaning constructing @see attributed_meaning_to_string
1.80 paf 192: default_content_type=defaults?defaults->get_element(*content_type_name):0;
1.78 paf 193: if(Value *element=main_class->get_element(*html_typo_name))
1.87 paf 194: if(Table *table=element->get_table())
195: pool().set_tag(table);
1.85 paf 196:
197: // $MAIN:MIME-TYPES
198: if(Value *element=main_class->get_element(*mime_types_name))
199: if(Table *table=element->get_table())
200: mime_types=table;
1.25 paf 201:
202: // execute @main[]
1.41 paf 203: const String *body_string=execute_method(*main_class, *main_method_name);
204: if(!body_string)
1.25 paf 205: THROW(0,0,
206: 0,
207: "'"MAIN_METHOD_NAME"' method not found");
1.79 paf 208:
1.91 paf 209: VString body_vstring_before_post_process(*body_string);
210: VString *body_vstring_after_post_process=&body_vstring_before_post_process;
211:
212: // post-process
213: if(Value *value=main_class->get_element(*post_process_method_name))
214: if(Junction *junction=value->get_junction())
215: if(const Method *method=junction->method) {
216: // preparing to pass parameters to
217: // @post-process[data]
218: VMethodFrame frame(pool(), *junction);
219: frame.set_self(*main_class);
220:
221: frame.store_param(method->name,
222: &body_vstring_before_post_process);
223: body_vstring_after_post_process=
224: NEW VString(*execute_method(frame, *method));
225: }
1.90 paf 226:
1.91 paf 227: const VFile *body_file=body_vstring_after_post_process->as_vfile();
1.41 paf 228:
1.45 paf 229: // extract response body
230: Value *body_value=static_cast<Value *>(
231: response.fields().get(*body_name));
232: if(body_value) // there is some $request.body
1.90 paf 233: body_file=body_value->as_vfile();
1.45 paf 234:
235: // OK. write out the result
1.90 paf 236: output_result(*body_file, header_only);
1.3 paf 237: }
1.76 paf 238: CATCH(e) { // request handling problem
239: // we're returning not result, but error explanation
1.30 paf 240: TRY {
1.76 paf 241: // log the beast
242: const String *problem_source=e.problem_source();
243: if(problem_source)
244: SAPI::log(pool(),
245: #ifndef NO_STRING_ORIGIN
246: "%s(%d): "
247: #endif
248: "'%s' %s [%s %s]",
249: #ifndef NO_STRING_ORIGIN
250: problem_source->origin().file?problem_source->origin().file:"global",
251: problem_source->origin().line,
252: #endif
253: problem_source->cstr(),
254: e.comment(),
255: e.type()?e.type()->cstr():"-",
256: e.code()?e.code()->cstr():"-"
257: );
258: else
259: SAPI::log(pool(),
260: "%s [%s %s]",
261: e.comment(),
262: e.type()?e.type()->cstr():"-",
263: e.code()?e.code()->cstr():"-"
264: );
1.43 paf 265:
266: // reset language to default
267: flang=fdefault_lang;
268:
269: // reset response
270: response.fields().clear();
271:
272: // this is what we'd return in $response:body
1.41 paf 273: const String *body_string=0;
1.43 paf 274:
1.30 paf 275: if(main_class) { // we've managed to end up with some main_class
276: // maybe we'd be lucky enough as to report an error
277: // in a gracefull way...
278: if(Value *value=main_class->get_element(*exception_method_name))
279: if(Junction *junction=value->get_junction())
280: if(const Method *method=junction->method) {
281: // preparing to pass parameters to
282: // @exception[origin;source;comment;type;code]
1.38 paf 283: VMethodFrame frame(pool(), *junction);
284: frame.set_self(*main_class);
1.30 paf 285:
286: const String *problem_source=e.problem_source();
287: // origin
1.38 paf 288: Value *origin_value=0;
1.30 paf 289: #ifndef NO_STRING_ORIGIN
1.38 paf 290: if(problem_source) {
291: const Origin& origin=problem_source->origin();
292: if(origin.file) {
293: char *buf=(char *)malloc(MAX_STRING);
1.42 paf 294: snprintf(buf, MAX_STRING, "%s(%d):",
1.38 paf 295: origin.file, 1+origin.line);
1.44 paf 296: String *origin_file_line=NEW String(pool(),
297: buf, true);
1.38 paf 298: origin_value=NEW VString(*origin_file_line);
299: }
1.30 paf 300: }
301: #endif
1.91 paf 302: frame.store_param(method->name,
1.38 paf 303: origin_value?origin_value:NEW VUnknown(pool()));
1.28 paf 304:
1.30 paf 305: // source
1.38 paf 306: Value *source_value=0;
1.43 paf 307: if(problem_source) {
1.47 paf 308: String& problem_source_copy=*NEW String(pool());
309: problem_source_copy.append(*problem_source,
310: flang, true);
1.43 paf 311: source_value=NEW VString(problem_source_copy);
312: }
1.91 paf 313: frame.store_param(method->name,
1.38 paf 314: source_value?source_value:NEW VUnknown(pool()));
1.30 paf 315:
316: // comment
1.44 paf 317: String *comment_value=NEW String(pool(),
318: e.comment(), true);
1.91 paf 319: frame.store_param(method->name,
1.30 paf 320: NEW VString(*comment_value));
321:
322: // type
323: Value *type_value;
1.43 paf 324: if(e.type()) {
1.47 paf 325: String& type_copy=*NEW String(pool());
326: type_value=NEW VString(type_copy.append(*e.type(),
327: flang, true));
1.43 paf 328: } else
1.30 paf 329: type_value=NEW VUnknown(pool());
1.91 paf 330: frame.store_param(method->name, type_value);
1.30 paf 331:
332: // code
333: Value *code_value;
1.43 paf 334: if(e.code()) {
1.47 paf 335: String& code_copy=*NEW String(pool());
336: code_value=NEW VString(code_copy.append(*e.code(),
337: flang, true));
1.43 paf 338: } else
1.30 paf 339: code_value=NEW VUnknown(pool());
1.91 paf 340: frame.store_param(method->name, code_value);
1.30 paf 341:
1.43 paf 342: // future $response:body=
343: // execute ^exception[origin;source;comment;type;code]
344: body_string=execute_method(frame, *method);
1.30 paf 345: }
346: }
347:
1.41 paf 348: if(!body_string) { // couldn't report an error beautifully?
349: // doing that ugly
350:
351: // make up result: $origin $source $comment $type $code
352: char *buf=(char *)malloc(MAX_STRING);
1.30 paf 353: size_t printed=0;
354: const String *problem_source=e.problem_source();
355: if(problem_source) {
1.16 paf 356: #ifndef NO_STRING_ORIGIN
1.30 paf 357: const Origin& origin=problem_source->origin();
358: if(origin.file)
1.41 paf 359: printed+=snprintf(buf+printed, MAX_STRING-printed, "%s(%d): ",
1.30 paf 360: origin.file, 1+origin.line);
1.28 paf 361: #endif
1.41 paf 362: printed+=snprintf(buf+printed, MAX_STRING-printed, "'%s' ",
1.30 paf 363: problem_source->cstr());
364: }
1.41 paf 365: printed+=snprintf(buf+printed, MAX_STRING-printed, "%s",
1.30 paf 366: e.comment());
367: const String *type=e.type();
368: if(type) {
1.41 paf 369: printed+=snprintf(buf+printed, MAX_STRING-printed, " type: %s",
1.30 paf 370: type->cstr());
371: const String *code=e.code();
372: if(code)
1.41 paf 373: printed+=snprintf(buf+printed, MAX_STRING-printed, ", code: %s",
1.30 paf 374: code->cstr());
375: }
1.43 paf 376:
377: // future $response:content-type
1.49 paf 378: response.fields().put(*content_type_name,
1.82 paf 379: NEW VString(*NEW String(pool(), UNHANDLED_EXCEPTION_CONTENT_TYPE)));
1.43 paf 380: // future $response:body
1.44 paf 381: body_string=NEW String(pool(), buf);
1.30 paf 382: }
1.41 paf 383:
1.90 paf 384: const VString body_vstring(*body_string);
385: const VFile *body_file=body_vstring.as_vfile();
386:
1.45 paf 387: // ERROR. write it out
1.90 paf 388: output_result(*body_file, header_only);
1.3 paf 389: }
1.30 paf 390: CATCH(e) {
1.41 paf 391: // exception in request exception handler
392: // remember to rethrow it
393: rethrow_me=e; need_rethrow=true;
1.1 paf 394: }
1.30 paf 395: END_CATCH
1.1 paf 396: }
1.41 paf 397: END_CATCH // do not use pool() after this point - no exception handler set
398: // any throw() would try to use zero exception() pointer
399:
1.91 paf 400: if(need_rethrow) // were there an exception for us to rethrow?
1.62 paf 401: THROW(rethrow_me.type(), rethrow_me.code(),
1.41 paf 402: rethrow_me.problem_source(),
403: rethrow_me.comment());
1.28 paf 404:
1.1 paf 405: }
406:
1.77 paf 407: VStateless_class *Request::use_file(const String& file_spec, bool fail_on_read_problem,
1.26 paf 408: const String *name,
409: VStateless_class *base_class) {
1.73 paf 410: // cyclic dependence check
1.77 paf 411: if(used_files.get(file_spec))
1.73 paf 412: return base_class;
1.77 paf 413: used_files.put(file_spec, (Hash::Val *)true);
1.73 paf 414:
415:
1.77 paf 416: char *source=file_read_text(pool(), file_spec, fail_on_read_problem);
1.3 paf 417: if(!source)
1.12 paf 418: return base_class;
1.3 paf 419:
1.77 paf 420: return use_buf(source, file_spec.cstr(), 0/*new class*/, name, base_class);
1.16 paf 421: }
422:
1.67 paf 423: VStateless_class *Request::use_buf(const char *source, const char *file,
1.26 paf 424: VStateless_class *aclass, const String *name,
425: VStateless_class *base_class) {
1.5 paf 426: // compile loaded class
1.26 paf 427: VStateless_class& cclass=COMPILE(source, aclass, name, base_class, file);
1.1 paf 428:
1.4 paf 429: // locate and execute possible @auto[] static method
1.25 paf 430: execute_method(cclass, *auto_method_name, false /*no result needed*/);
1.16 paf 431: return &cclass;
1.20 paf 432: }
433:
1.52 paf 434: /**
435: - fail_if_junction(true, junction = fail
436: - fail_if_junction(false, not junction = fail
437: */
1.62 paf 438: void Request::fail_if_junction_(bool is, Value& value,
439: const String& method_name, const char *msg) {
1.20 paf 440:
441: if((value.get_junction()!=0) ^ !is)
442: THROW(0, 0,
443: &method_name,
444: msg);
1.19 paf 445: }
446:
1.77 paf 447: const String& Request::relative(const char *apath, const String& relative_name) {
448: int lpath_buf_size=strlen(apath)+1;
449: char *lpath=(char *)malloc(lpath_buf_size);
450: memcpy(lpath, apath, lpath_buf_size);
451: rsplit(lpath, '/');
452: String& result=*NEW String(pool(), lpath);
453: result.APPEND_CONST("/");
454: result.append(relative_name, String::UL_PASS_APPENDED);
1.19 paf 455: return result;
456: }
457:
1.77 paf 458: const String& Request::absolute(const String& relative_name) {
459: char *relative_name_cstr=relative_name.cstr();
460: if(relative_name_cstr[0]=='/') {
461: String& result=*NEW String(pool(), info.document_root);
462: result.append(relative_name, String::UL_PASS_APPENDED);
1.19 paf 463: return result;
464: } else
1.77 paf 465: return relative(info.path_translated, relative_name);
1.1 paf 466: }
1.45 paf 467:
1.90 paf 468: void Request::output_result(const VFile& body_file, bool header_only) {
1.51 paf 469: // header: cookies
470: cookie.output_result();
471:
1.90 paf 472: // set content-type
473: if(String *body_file_content_type=static_cast<String *>(
474: body_file.fields().get(*vfile_mime_type_name))) {
475: // body file content type
476: response.fields().put(*content_type_name, body_file_content_type);
477: } else {
478: // default content type
479: response.fields().put_dont_replace(*content_type_name,
480: default_content_type?default_content_type
481: :NEW VString(*NEW String(pool(), DEFAULT_CONTENT_TYPE)));
1.92 paf 482: }
483:
484: // content-disposition
485: if(VString *vfile_name=static_cast<VString *>(body_file.fields().get(*name_name))) {
486: VHash& vhash=*NEW VHash(pool());
487: vhash.hash().put(*content_disposition_filename_name, vfile_name);
488: response.fields().put(*content_disposition_name, &vhash);
1.90 paf 489: }
1.49 paf 490:
1.62 paf 491: // prepare header: $response:fields without :body
1.73 paf 492: response.fields().for_each(add_header_attribute, /*excluding*/ body_name);
1.50 paf 493:
1.62 paf 494: // prepare...
1.90 paf 495: const void *body=body_file.value_ptr();
496: size_t content_length=body_file.value_size();
1.50 paf 497:
1.62 paf 498: // prepare header: content-length
1.65 paf 499: if(content_length) { // useful for redirecting [header "location: http://..."]
500: char content_length_cstr[MAX_NUMBER];
1.66 paf 501: snprintf(content_length_cstr, MAX_NUMBER, "%lu", content_length);
1.69 paf 502: SAPI::add_header_attribute(pool(), "content-length", content_length_cstr);
1.65 paf 503: }
1.62 paf 504:
505: // send header
1.69 paf 506: SAPI::send_header(pool());
1.71 paf 507:
1.62 paf 508: // send body
509: if(!header_only)
1.69 paf 510: SAPI::send_body(pool(), body, content_length);
1.50 paf 511: }
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