Annotation of parser3/src/main/pa_request.C, revision 1.83
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:
1.83 ! paf 8: $Id: pa_request.C,v 1.82 2001/03/26 10:36:55 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"
1.3 paf 26:
1.72 paf 27: /// $limits.post_max_size default 10M
28: const size_t MAX_POST_SIZE_DEFAULT=10*0x400*400;
29:
1.82 paf 30: /// content type of exception response, when no @MAIN:exception handler defined
31: const char *UNHANDLED_EXCEPTION_CONTENT_TYPE="text/plain";
32:
33: /// content type of response when no $MAIN:defaults.content-type defined
34: const char *DEFAULT_CONTENT_TYPE="text/html";
35:
1.72 paf 36: //
1.28 paf 37: Request::Request(Pool& apool,
1.33 paf 38: Info& ainfo,
1.43 paf 39: String::Untaint_lang adefault_lang) : Pooled(apool),
1.3 paf 40: stack(apool),
1.41 paf 41: ROOT(apool),
42: env(apool),
43: form(apool),
44: request(apool, *this),
45: response(apool),
1.51 paf 46: cookie(apool),
1.3 paf 47: fclasses(apool),
1.43 paf 48: fdefault_lang(adefault_lang), flang(adefault_lang),
49: info(ainfo),
1.74 paf 50: default_content_type(0),
1.73 paf 51: used_files(apool)
1.3 paf 52: {
1.27 paf 53: // root superclass,
1.3 paf 54: // parent of all classes,
55: // operators holder
1.41 paf 56: initialize_root_class(pool(), ROOT);
57: classes().put(*root_class_name, &ROOT);
1.27 paf 58: // table class
59: classes().put(*table_class_name, table_class);
1.82 paf 60: // file class
61: classes().put(*file_class_name, file_class);
1.3 paf 62: // env class
1.41 paf 63: classes().put(*env_class_name, &env);
1.27 paf 64: // form class
1.41 paf 65: classes().put(*form_class_name, &form);
1.40 paf 66: // request class
1.41 paf 67: classes().put(*request_class_name, &request);
68: // response class
69: classes().put(*response_class_name, &response);
1.51 paf 70: // cookie class
71: classes().put(*cookie_class_name, &cookie);
1.3 paf 72: }
1.1 paf 73:
1.62 paf 74: static void add_header_attribute(const Hash::Key& aattribute, Hash::Val *ameaning,
75: void *info) {
1.48 paf 76: String *attribute_to_exclude=static_cast<String *>(info);
77: if(aattribute==*attribute_to_exclude)
1.45 paf 78: return;
79:
1.62 paf 80: Value& lmeaning=*static_cast<Value *>(ameaning);
81: Pool& pool=lmeaning.pool();
1.45 paf 82:
1.62 paf 83: String attribute(pool);
1.69 paf 84: SAPI::add_header_attribute(pool,
1.62 paf 85: attribute.append(aattribute, String::UL_HEADER, true).cstr(),
86: attributed_meaning_to_string(lmeaning).cstr());
1.45 paf 87: }
88:
1.64 paf 89: /**
90: load MAIN class, execute @main.
91: MAIN class consists of all the auto.p files we'd manage to find
92: plus
93: the file user requested us to process
94: all located classes become children of one another,
95: composing class we name 'MAIN'
96: */
1.63 paf 97: void Request::core(const char *root_auto_path, bool root_auto_fail,
98: const char *site_auto_path, bool site_auto_fail,
1.62 paf 99: bool header_only) {
1.29 paf 100: VStateless_class *main_class=0;
1.41 paf 101: bool need_rethrow=false; Exception rethrow_me;
1.3 paf 102: TRY {
1.29 paf 103: char *auto_filespec=(char *)malloc(MAX_STRING);
104:
1.63 paf 105: // loading root auto.p
106: if(root_auto_path) {
1.77 paf 107: String& filespec=*NEW String(pool());
108: filespec.APPEND(root_auto_path, 0, "root_auto", 0);
109: filespec.APPEND_CONST("/" AUTO_FILE_NAME);
1.29 paf 110: main_class=use_file(
1.77 paf 111: filespec, root_auto_fail,
1.37 paf 112: main_class_name, main_class);
1.29 paf 113: }
114:
1.72 paf 115: // $MAIN:limits hash used here,
116: // until someone with less privileges have overriden them
1.78 paf 117: {
118: Value *limits=main_class?main_class->get_element(*limits_name):0;
119: // $limits.post_max_size default 10M
120: Value *element=limits?limits->get_element(*post_max_size_name):0;
121: size_t value=element?(size_t)element->get_double():0;
122: size_t post_max_size=value?value:MAX_POST_SIZE_DEFAULT;
123:
124: form.fill_fields(*this, post_max_size);
125: }
1.72 paf 126:
1.78 paf 127: // filling cookies
1.72 paf 128: cookie.fill_fields(*this);
129:
1.64 paf 130: // loading site auto.p
1.63 paf 131: if(site_auto_path) {
1.77 paf 132: String& filespec=*NEW String(pool());
133: filespec.APPEND(site_auto_path, 0, "site_auto", 0);
134: filespec.APPEND_CONST("/" AUTO_FILE_NAME);
1.37 paf 135: main_class=use_file(
1.77 paf 136: filespec, site_auto_fail,
1.37 paf 137: main_class_name, main_class);
1.29 paf 138: }
1.8 paf 139:
1.72 paf 140: // loading auto.p files from document_root/..
141: // to the one beside requested file.
142: // all assigned bases from upper dir
143: {
144: /* /document/root */
1.77 paf 145: char *file_spec=
1.72 paf 146: (char *)malloc(strlen(info.path_translated)+strlen(AUTO_FILE_NAME)+1);
1.83 ! paf 147: size_t document_root_size=strlen(info.document_root);
! 148: if(info.document_root[document_root_size-1]=='/')
! 149: document_root_size--;
! 150: memcpy(file_spec, info.document_root, document_root_size);
1.72 paf 151:
152: /* /requested/file.html */
153: char *branches=(char *)malloc(strlen(info.path_translated)+1);
1.83 ! paf 154: strcpy(branches, info.path_translated+document_root_size);
1.72 paf 155: char *next=branches;
1.83 ! paf 156: char *append_here=file_spec+document_root_size;
1.72 paf 157:
158: size_t slash_auto_p_size=strlen("/" AUTO_FILE_NAME);
159: while(true) {
160: char *step=lsplit(&next, '/');
161: if(next) { // not 'file.html' part
162: size_t step_size=strlen(step);
163: memcpy(append_here, step, step_size);
164: append_here+=step_size;
165: memcpy(append_here, "/" AUTO_FILE_NAME, slash_auto_p_size+1);
166: append_here++/* / */;
167:
1.77 paf 168: String& sfile_spec=*NEW String(pool());
169: sfile_spec.APPEND(file_spec, 0, "scanned", 0);
170: main_class=use_file(sfile_spec, false/*ignore read problem*/,
1.72 paf 171: main_class_name, main_class);
172: } else
173: break;
174: }
175: }
1.34 paf 176:
1.72 paf 177: // compiling requested file
1.77 paf 178: String& spath_translated=*NEW String(pool());
179: spath_translated.APPEND(info.path_translated, 0, "user-request", 0);
180: main_class=use_file(spath_translated, true/*don't ignore read problem*/,
1.72 paf 181: main_class_name, main_class);
1.7 paf 182:
1.42 paf 183: // $MAIN:defaults
1.78 paf 184: Value *defaults=main_class->get_element(*defaults_name);
1.75 paf 185: // value must be allocated on request's pool for that pool used on
186: // meaning constructing @see attributed_meaning_to_string
1.80 paf 187: default_content_type=defaults?defaults->get_element(*content_type_name):0;
1.78 paf 188: if(Value *element=main_class->get_element(*html_typo_name))
189: if(VTable *vtable=element->get_vtable())
1.81 paf 190: pool().set_tag(&vtable->table());
1.25 paf 191:
192: // execute @main[]
1.41 paf 193: const String *body_string=execute_method(*main_class, *main_method_name);
194: if(!body_string)
1.25 paf 195: THROW(0,0,
196: 0,
197: "'"MAIN_METHOD_NAME"' method not found");
1.79 paf 198:
199: // post-process
200: // todo
1.41 paf 201:
1.45 paf 202: // extract response body
203: Value *body_value=static_cast<Value *>(
204: response.fields().get(*body_name));
205: if(body_value) // there is some $request.body
206: body_string=&body_value->as_string();// TODO: IMAGE&FILE
207:
208: // OK. write out the result
1.62 paf 209: output_result(*body_string, header_only);
1.3 paf 210: }
1.76 paf 211: CATCH(e) { // request handling problem
212: // we're returning not result, but error explanation
1.30 paf 213: TRY {
1.76 paf 214: // log the beast
215: const String *problem_source=e.problem_source();
216: if(problem_source)
217: SAPI::log(pool(),
218: #ifndef NO_STRING_ORIGIN
219: "%s(%d): "
220: #endif
221: "'%s' %s [%s %s]",
222: #ifndef NO_STRING_ORIGIN
223: problem_source->origin().file?problem_source->origin().file:"global",
224: problem_source->origin().line,
225: #endif
226: problem_source->cstr(),
227: e.comment(),
228: e.type()?e.type()->cstr():"-",
229: e.code()?e.code()->cstr():"-"
230: );
231: else
232: SAPI::log(pool(),
233: "%s [%s %s]",
234: e.comment(),
235: e.type()?e.type()->cstr():"-",
236: e.code()?e.code()->cstr():"-"
237: );
1.43 paf 238:
239: // reset language to default
240: flang=fdefault_lang;
241:
242: // reset response
243: response.fields().clear();
244:
245: // this is what we'd return in $response:body
1.41 paf 246: const String *body_string=0;
1.43 paf 247:
1.30 paf 248: if(main_class) { // we've managed to end up with some main_class
249: // maybe we'd be lucky enough as to report an error
250: // in a gracefull way...
251: if(Value *value=main_class->get_element(*exception_method_name))
252: if(Junction *junction=value->get_junction())
253: if(const Method *method=junction->method) {
254: // preparing to pass parameters to
255: // @exception[origin;source;comment;type;code]
1.38 paf 256: VMethodFrame frame(pool(), *junction);
257: frame.set_self(*main_class);
1.30 paf 258:
259: const String *problem_source=e.problem_source();
260: // origin
1.44 paf 261: String origin_name(pool(), "origin");
1.38 paf 262: Value *origin_value=0;
1.30 paf 263: #ifndef NO_STRING_ORIGIN
1.38 paf 264: if(problem_source) {
265: const Origin& origin=problem_source->origin();
266: if(origin.file) {
267: char *buf=(char *)malloc(MAX_STRING);
1.42 paf 268: snprintf(buf, MAX_STRING, "%s(%d):",
1.38 paf 269: origin.file, 1+origin.line);
1.44 paf 270: String *origin_file_line=NEW String(pool(),
271: buf, true);
1.38 paf 272: origin_value=NEW VString(*origin_file_line);
273: }
1.30 paf 274: }
275: #endif
1.38 paf 276: frame.store_param(origin_name,
277: origin_value?origin_value:NEW VUnknown(pool()));
1.28 paf 278:
1.30 paf 279: // source
1.44 paf 280: String source_name(pool(), "source");
1.38 paf 281: Value *source_value=0;
1.43 paf 282: if(problem_source) {
1.47 paf 283: String& problem_source_copy=*NEW String(pool());
284: problem_source_copy.append(*problem_source,
285: flang, true);
1.43 paf 286: source_value=NEW VString(problem_source_copy);
287: }
1.38 paf 288: frame.store_param(source_name,
289: source_value?source_value:NEW VUnknown(pool()));
1.30 paf 290:
291: // comment
1.44 paf 292: String comment_name(pool(), "comment");
293: String *comment_value=NEW String(pool(),
294: e.comment(), true);
1.38 paf 295: frame.store_param(comment_name,
1.30 paf 296: NEW VString(*comment_value));
297:
298: // type
1.44 paf 299: String type_name(pool(), "type");
1.30 paf 300: Value *type_value;
1.43 paf 301: if(e.type()) {
1.47 paf 302: String& type_copy=*NEW String(pool());
303: type_value=NEW VString(type_copy.append(*e.type(),
304: flang, true));
1.43 paf 305: } else
1.30 paf 306: type_value=NEW VUnknown(pool());
1.38 paf 307: frame.store_param(type_name, type_value);
1.30 paf 308:
309: // code
1.44 paf 310: String code_name(pool(), "code");
1.30 paf 311: Value *code_value;
1.43 paf 312: if(e.code()) {
1.47 paf 313: String& code_copy=*NEW String(pool());
314: code_value=NEW VString(code_copy.append(*e.code(),
315: flang, true));
1.43 paf 316: } else
1.30 paf 317: code_value=NEW VUnknown(pool());
1.38 paf 318: frame.store_param(code_name, code_value);
1.30 paf 319:
1.43 paf 320: // future $response:body=
321: // execute ^exception[origin;source;comment;type;code]
322: body_string=execute_method(frame, *method);
1.30 paf 323: }
324: }
325:
1.41 paf 326: if(!body_string) { // couldn't report an error beautifully?
327: // doing that ugly
328:
329: // make up result: $origin $source $comment $type $code
330: char *buf=(char *)malloc(MAX_STRING);
1.30 paf 331: size_t printed=0;
332: const String *problem_source=e.problem_source();
333: if(problem_source) {
1.16 paf 334: #ifndef NO_STRING_ORIGIN
1.30 paf 335: const Origin& origin=problem_source->origin();
336: if(origin.file)
1.41 paf 337: printed+=snprintf(buf+printed, MAX_STRING-printed, "%s(%d): ",
1.30 paf 338: origin.file, 1+origin.line);
1.28 paf 339: #endif
1.41 paf 340: printed+=snprintf(buf+printed, MAX_STRING-printed, "'%s' ",
1.30 paf 341: problem_source->cstr());
342: }
1.41 paf 343: printed+=snprintf(buf+printed, MAX_STRING-printed, "%s",
1.30 paf 344: e.comment());
345: const String *type=e.type();
346: if(type) {
1.41 paf 347: printed+=snprintf(buf+printed, MAX_STRING-printed, " type: %s",
1.30 paf 348: type->cstr());
349: const String *code=e.code();
350: if(code)
1.41 paf 351: printed+=snprintf(buf+printed, MAX_STRING-printed, ", code: %s",
1.30 paf 352: code->cstr());
353: }
1.43 paf 354:
355: // future $response:content-type
1.49 paf 356: response.fields().put(*content_type_name,
1.82 paf 357: NEW VString(*NEW String(pool(), UNHANDLED_EXCEPTION_CONTENT_TYPE)));
1.43 paf 358: // future $response:body
1.44 paf 359: body_string=NEW String(pool(), buf);
1.30 paf 360: }
1.41 paf 361:
1.45 paf 362: // ERROR. write it out
1.62 paf 363: output_result(*body_string, header_only);
1.3 paf 364: }
1.30 paf 365: CATCH(e) {
1.41 paf 366: // exception in request exception handler
367: // remember to rethrow it
368: rethrow_me=e; need_rethrow=true;
1.1 paf 369: }
1.30 paf 370: END_CATCH
1.1 paf 371: }
1.41 paf 372: END_CATCH // do not use pool() after this point - no exception handler set
373: // any throw() would try to use zero exception() pointer
374:
375: if(need_rethrow) // there were an exception set for us to rethrow?
1.62 paf 376: THROW(rethrow_me.type(), rethrow_me.code(),
1.41 paf 377: rethrow_me.problem_source(),
378: rethrow_me.comment());
1.28 paf 379:
1.1 paf 380: }
381:
1.77 paf 382: VStateless_class *Request::use_file(const String& file_spec, bool fail_on_read_problem,
1.26 paf 383: const String *name,
384: VStateless_class *base_class) {
1.73 paf 385: // cyclic dependence check
1.77 paf 386: if(used_files.get(file_spec))
1.73 paf 387: return base_class;
1.77 paf 388: used_files.put(file_spec, (Hash::Val *)true);
1.73 paf 389:
390:
1.77 paf 391: char *source=file_read_text(pool(), file_spec, fail_on_read_problem);
1.3 paf 392: if(!source)
1.12 paf 393: return base_class;
1.3 paf 394:
1.77 paf 395: return use_buf(source, file_spec.cstr(), 0/*new class*/, name, base_class);
1.16 paf 396: }
397:
1.67 paf 398: VStateless_class *Request::use_buf(const char *source, const char *file,
1.26 paf 399: VStateless_class *aclass, const String *name,
400: VStateless_class *base_class) {
1.5 paf 401: // compile loaded class
1.26 paf 402: VStateless_class& cclass=COMPILE(source, aclass, name, base_class, file);
1.1 paf 403:
1.4 paf 404: // locate and execute possible @auto[] static method
1.25 paf 405: execute_method(cclass, *auto_method_name, false /*no result needed*/);
1.16 paf 406: return &cclass;
1.20 paf 407: }
408:
1.52 paf 409: /**
410: - fail_if_junction(true, junction = fail
411: - fail_if_junction(false, not junction = fail
412: */
1.62 paf 413: void Request::fail_if_junction_(bool is, Value& value,
414: const String& method_name, const char *msg) {
1.20 paf 415:
416: if((value.get_junction()!=0) ^ !is)
417: THROW(0, 0,
418: &method_name,
419: msg);
1.19 paf 420: }
421:
1.77 paf 422: const String& Request::relative(const char *apath, const String& relative_name) {
423: int lpath_buf_size=strlen(apath)+1;
424: char *lpath=(char *)malloc(lpath_buf_size);
425: memcpy(lpath, apath, lpath_buf_size);
426: rsplit(lpath, '/');
427: String& result=*NEW String(pool(), lpath);
428: result.APPEND_CONST("/");
429: result.append(relative_name, String::UL_PASS_APPENDED);
1.19 paf 430: return result;
431: }
432:
1.77 paf 433: const String& Request::absolute(const String& relative_name) {
434: char *relative_name_cstr=relative_name.cstr();
435: if(relative_name_cstr[0]=='/') {
436: String& result=*NEW String(pool(), info.document_root);
437: result.append(relative_name, String::UL_PASS_APPENDED);
1.19 paf 438: return result;
439: } else
1.77 paf 440: return relative(info.path_translated, relative_name);
1.1 paf 441: }
1.45 paf 442:
1.62 paf 443: void Request::output_result(const String& body_string, bool header_only) {
1.51 paf 444: // header: cookies
445: cookie.output_result();
446:
1.49 paf 447: // set default content-type
1.80 paf 448: response.fields().put_dont_replace(*content_type_name,
449: default_content_type?default_content_type
1.82 paf 450: :NEW VString(*NEW String(pool(), DEFAULT_CONTENT_TYPE)));
1.49 paf 451:
1.62 paf 452: // prepare header: $response:fields without :body
1.73 paf 453: response.fields().for_each(add_header_attribute, /*excluding*/ body_name);
1.50 paf 454:
1.62 paf 455: // prepare...
1.45 paf 456: const char *body=body_string.cstr();
1.50 paf 457: size_t content_length=strlen(body);
458:
1.62 paf 459: // prepare header: content-length
1.65 paf 460: if(content_length) { // useful for redirecting [header "location: http://..."]
461: char content_length_cstr[MAX_NUMBER];
1.66 paf 462: snprintf(content_length_cstr, MAX_NUMBER, "%lu", content_length);
1.69 paf 463: SAPI::add_header_attribute(pool(), "content-length", content_length_cstr);
1.65 paf 464: }
1.62 paf 465:
466: // send header
1.69 paf 467: SAPI::send_header(pool());
1.71 paf 468:
1.62 paf 469: // send body
470: if(!header_only)
1.69 paf 471: SAPI::send_body(pool(), body, content_length);
1.50 paf 472: }
E-mail:
![[BACK]](/cvsweb/icons/back.gif){kind=icon}
Return to pa_request.C CVS log ![[TXT]](/cvsweb/icons/text.gif){kind=icon}
![[DIR]](/cvsweb/icons/dir.gif){kind=icon}
Up to [parser3project] / parser3 / src / main