Annotation of parser3/src/main/pa_request.C, revision 1.82
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:
1.82 ! paf 8: $Id: pa_request.C,v 1.81 2001/03/25 10:29:40 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);
1.77 paf 147: strcpy(file_spec, info.document_root);
1.72 paf 148:
149: /* /requested/file.html */
150: char *branches=(char *)malloc(strlen(info.path_translated)+1);
151: strcpy(branches, info.path_translated+strlen(info.document_root));
152: char *next=branches;
153:
1.77 paf 154: char *append_here=file_spec+strlen(file_spec);
1.72 paf 155: size_t slash_auto_p_size=strlen("/" AUTO_FILE_NAME);
156: while(true) {
157: char *step=lsplit(&next, '/');
158: if(next) { // not 'file.html' part
159: size_t step_size=strlen(step);
160: memcpy(append_here, step, step_size);
161: append_here+=step_size;
162: memcpy(append_here, "/" AUTO_FILE_NAME, slash_auto_p_size+1);
163: append_here++/* / */;
164:
1.77 paf 165: String& sfile_spec=*NEW String(pool());
166: sfile_spec.APPEND(file_spec, 0, "scanned", 0);
167: main_class=use_file(sfile_spec, false/*ignore read problem*/,
1.72 paf 168: main_class_name, main_class);
169: } else
170: break;
171: }
172: }
1.34 paf 173:
1.72 paf 174: // compiling requested file
1.77 paf 175: String& spath_translated=*NEW String(pool());
176: spath_translated.APPEND(info.path_translated, 0, "user-request", 0);
177: main_class=use_file(spath_translated, true/*don't ignore read problem*/,
1.72 paf 178: main_class_name, main_class);
1.7 paf 179:
1.42 paf 180: // $MAIN:defaults
1.78 paf 181: Value *defaults=main_class->get_element(*defaults_name);
1.75 paf 182: // value must be allocated on request's pool for that pool used on
183: // meaning constructing @see attributed_meaning_to_string
1.80 paf 184: default_content_type=defaults?defaults->get_element(*content_type_name):0;
1.78 paf 185: if(Value *element=main_class->get_element(*html_typo_name))
186: if(VTable *vtable=element->get_vtable())
1.81 paf 187: pool().set_tag(&vtable->table());
1.25 paf 188:
189: // execute @main[]
1.41 paf 190: const String *body_string=execute_method(*main_class, *main_method_name);
191: if(!body_string)
1.25 paf 192: THROW(0,0,
193: 0,
194: "'"MAIN_METHOD_NAME"' method not found");
1.79 paf 195:
196: // post-process
197: // todo
1.41 paf 198:
1.45 paf 199: // extract response body
200: Value *body_value=static_cast<Value *>(
201: response.fields().get(*body_name));
202: if(body_value) // there is some $request.body
203: body_string=&body_value->as_string();// TODO: IMAGE&FILE
204:
205: // OK. write out the result
1.62 paf 206: output_result(*body_string, header_only);
1.3 paf 207: }
1.76 paf 208: CATCH(e) { // request handling problem
209: // we're returning not result, but error explanation
1.30 paf 210: TRY {
1.76 paf 211: // log the beast
212: const String *problem_source=e.problem_source();
213: if(problem_source)
214: SAPI::log(pool(),
215: #ifndef NO_STRING_ORIGIN
216: "%s(%d): "
217: #endif
218: "'%s' %s [%s %s]",
219: #ifndef NO_STRING_ORIGIN
220: problem_source->origin().file?problem_source->origin().file:"global",
221: problem_source->origin().line,
222: #endif
223: problem_source->cstr(),
224: e.comment(),
225: e.type()?e.type()->cstr():"-",
226: e.code()?e.code()->cstr():"-"
227: );
228: else
229: SAPI::log(pool(),
230: "%s [%s %s]",
231: e.comment(),
232: e.type()?e.type()->cstr():"-",
233: e.code()?e.code()->cstr():"-"
234: );
1.43 paf 235:
236: // reset language to default
237: flang=fdefault_lang;
238:
239: // reset response
240: response.fields().clear();
241:
242: // this is what we'd return in $response:body
1.41 paf 243: const String *body_string=0;
1.43 paf 244:
1.30 paf 245: if(main_class) { // we've managed to end up with some main_class
246: // maybe we'd be lucky enough as to report an error
247: // in a gracefull way...
248: if(Value *value=main_class->get_element(*exception_method_name))
249: if(Junction *junction=value->get_junction())
250: if(const Method *method=junction->method) {
251: // preparing to pass parameters to
252: // @exception[origin;source;comment;type;code]
1.38 paf 253: VMethodFrame frame(pool(), *junction);
254: frame.set_self(*main_class);
1.30 paf 255:
256: const String *problem_source=e.problem_source();
257: // origin
1.44 paf 258: String origin_name(pool(), "origin");
1.38 paf 259: Value *origin_value=0;
1.30 paf 260: #ifndef NO_STRING_ORIGIN
1.38 paf 261: if(problem_source) {
262: const Origin& origin=problem_source->origin();
263: if(origin.file) {
264: char *buf=(char *)malloc(MAX_STRING);
1.42 paf 265: snprintf(buf, MAX_STRING, "%s(%d):",
1.38 paf 266: origin.file, 1+origin.line);
1.44 paf 267: String *origin_file_line=NEW String(pool(),
268: buf, true);
1.38 paf 269: origin_value=NEW VString(*origin_file_line);
270: }
1.30 paf 271: }
272: #endif
1.38 paf 273: frame.store_param(origin_name,
274: origin_value?origin_value:NEW VUnknown(pool()));
1.28 paf 275:
1.30 paf 276: // source
1.44 paf 277: String source_name(pool(), "source");
1.38 paf 278: Value *source_value=0;
1.43 paf 279: if(problem_source) {
1.47 paf 280: String& problem_source_copy=*NEW String(pool());
281: problem_source_copy.append(*problem_source,
282: flang, true);
1.43 paf 283: source_value=NEW VString(problem_source_copy);
284: }
1.38 paf 285: frame.store_param(source_name,
286: source_value?source_value:NEW VUnknown(pool()));
1.30 paf 287:
288: // comment
1.44 paf 289: String comment_name(pool(), "comment");
290: String *comment_value=NEW String(pool(),
291: e.comment(), true);
1.38 paf 292: frame.store_param(comment_name,
1.30 paf 293: NEW VString(*comment_value));
294:
295: // type
1.44 paf 296: String type_name(pool(), "type");
1.30 paf 297: Value *type_value;
1.43 paf 298: if(e.type()) {
1.47 paf 299: String& type_copy=*NEW String(pool());
300: type_value=NEW VString(type_copy.append(*e.type(),
301: flang, true));
1.43 paf 302: } else
1.30 paf 303: type_value=NEW VUnknown(pool());
1.38 paf 304: frame.store_param(type_name, type_value);
1.30 paf 305:
306: // code
1.44 paf 307: String code_name(pool(), "code");
1.30 paf 308: Value *code_value;
1.43 paf 309: if(e.code()) {
1.47 paf 310: String& code_copy=*NEW String(pool());
311: code_value=NEW VString(code_copy.append(*e.code(),
312: flang, true));
1.43 paf 313: } else
1.30 paf 314: code_value=NEW VUnknown(pool());
1.38 paf 315: frame.store_param(code_name, code_value);
1.30 paf 316:
1.43 paf 317: // future $response:body=
318: // execute ^exception[origin;source;comment;type;code]
319: body_string=execute_method(frame, *method);
1.30 paf 320: }
321: }
322:
1.41 paf 323: if(!body_string) { // couldn't report an error beautifully?
324: // doing that ugly
325:
326: // make up result: $origin $source $comment $type $code
327: char *buf=(char *)malloc(MAX_STRING);
1.30 paf 328: size_t printed=0;
329: const String *problem_source=e.problem_source();
330: if(problem_source) {
1.16 paf 331: #ifndef NO_STRING_ORIGIN
1.30 paf 332: const Origin& origin=problem_source->origin();
333: if(origin.file)
1.41 paf 334: printed+=snprintf(buf+printed, MAX_STRING-printed, "%s(%d): ",
1.30 paf 335: origin.file, 1+origin.line);
1.28 paf 336: #endif
1.41 paf 337: printed+=snprintf(buf+printed, MAX_STRING-printed, "'%s' ",
1.30 paf 338: problem_source->cstr());
339: }
1.41 paf 340: printed+=snprintf(buf+printed, MAX_STRING-printed, "%s",
1.30 paf 341: e.comment());
342: const String *type=e.type();
343: if(type) {
1.41 paf 344: printed+=snprintf(buf+printed, MAX_STRING-printed, " type: %s",
1.30 paf 345: type->cstr());
346: const String *code=e.code();
347: if(code)
1.41 paf 348: printed+=snprintf(buf+printed, MAX_STRING-printed, ", code: %s",
1.30 paf 349: code->cstr());
350: }
1.43 paf 351:
352: // future $response:content-type
1.49 paf 353: response.fields().put(*content_type_name,
1.82 ! paf 354: NEW VString(*NEW String(pool(), UNHANDLED_EXCEPTION_CONTENT_TYPE)));
1.43 paf 355: // future $response:body
1.44 paf 356: body_string=NEW String(pool(), buf);
1.30 paf 357: }
1.41 paf 358:
1.45 paf 359: // ERROR. write it out
1.62 paf 360: output_result(*body_string, header_only);
1.3 paf 361: }
1.30 paf 362: CATCH(e) {
1.41 paf 363: // exception in request exception handler
364: // remember to rethrow it
365: rethrow_me=e; need_rethrow=true;
1.1 paf 366: }
1.30 paf 367: END_CATCH
1.1 paf 368: }
1.41 paf 369: END_CATCH // do not use pool() after this point - no exception handler set
370: // any throw() would try to use zero exception() pointer
371:
372: if(need_rethrow) // there were an exception set for us to rethrow?
1.62 paf 373: THROW(rethrow_me.type(), rethrow_me.code(),
1.41 paf 374: rethrow_me.problem_source(),
375: rethrow_me.comment());
1.28 paf 376:
1.1 paf 377: }
378:
1.77 paf 379: VStateless_class *Request::use_file(const String& file_spec, bool fail_on_read_problem,
1.26 paf 380: const String *name,
381: VStateless_class *base_class) {
1.73 paf 382: // cyclic dependence check
1.77 paf 383: if(used_files.get(file_spec))
1.73 paf 384: return base_class;
1.77 paf 385: used_files.put(file_spec, (Hash::Val *)true);
1.73 paf 386:
387:
1.77 paf 388: char *source=file_read_text(pool(), file_spec, fail_on_read_problem);
1.3 paf 389: if(!source)
1.12 paf 390: return base_class;
1.3 paf 391:
1.77 paf 392: return use_buf(source, file_spec.cstr(), 0/*new class*/, name, base_class);
1.16 paf 393: }
394:
1.67 paf 395: VStateless_class *Request::use_buf(const char *source, const char *file,
1.26 paf 396: VStateless_class *aclass, const String *name,
397: VStateless_class *base_class) {
1.5 paf 398: // compile loaded class
1.26 paf 399: VStateless_class& cclass=COMPILE(source, aclass, name, base_class, file);
1.1 paf 400:
1.4 paf 401: // locate and execute possible @auto[] static method
1.25 paf 402: execute_method(cclass, *auto_method_name, false /*no result needed*/);
1.16 paf 403: return &cclass;
1.20 paf 404: }
405:
1.52 paf 406: /**
407: - fail_if_junction(true, junction = fail
408: - fail_if_junction(false, not junction = fail
409: */
1.62 paf 410: void Request::fail_if_junction_(bool is, Value& value,
411: const String& method_name, const char *msg) {
1.20 paf 412:
413: if((value.get_junction()!=0) ^ !is)
414: THROW(0, 0,
415: &method_name,
416: msg);
1.19 paf 417: }
418:
1.77 paf 419: const String& Request::relative(const char *apath, const String& relative_name) {
420: int lpath_buf_size=strlen(apath)+1;
421: char *lpath=(char *)malloc(lpath_buf_size);
422: memcpy(lpath, apath, lpath_buf_size);
423: rsplit(lpath, '/');
424: String& result=*NEW String(pool(), lpath);
425: result.APPEND_CONST("/");
426: result.append(relative_name, String::UL_PASS_APPENDED);
1.19 paf 427: return result;
428: }
429:
1.77 paf 430: const String& Request::absolute(const String& relative_name) {
431: char *relative_name_cstr=relative_name.cstr();
432: if(relative_name_cstr[0]=='/') {
433: String& result=*NEW String(pool(), info.document_root);
434: result.append(relative_name, String::UL_PASS_APPENDED);
1.19 paf 435: return result;
436: } else
1.77 paf 437: return relative(info.path_translated, relative_name);
1.1 paf 438: }
1.45 paf 439:
1.62 paf 440: void Request::output_result(const String& body_string, bool header_only) {
1.51 paf 441: // header: cookies
442: cookie.output_result();
443:
1.49 paf 444: // set default content-type
1.80 paf 445: response.fields().put_dont_replace(*content_type_name,
446: default_content_type?default_content_type
1.82 ! paf 447: :NEW VString(*NEW String(pool(), DEFAULT_CONTENT_TYPE)));
1.49 paf 448:
1.62 paf 449: // prepare header: $response:fields without :body
1.73 paf 450: response.fields().for_each(add_header_attribute, /*excluding*/ body_name);
1.50 paf 451:
1.62 paf 452: // prepare...
1.45 paf 453: const char *body=body_string.cstr();
1.50 paf 454: size_t content_length=strlen(body);
455:
1.62 paf 456: // prepare header: content-length
1.65 paf 457: if(content_length) { // useful for redirecting [header "location: http://..."]
458: char content_length_cstr[MAX_NUMBER];
1.66 paf 459: snprintf(content_length_cstr, MAX_NUMBER, "%lu", content_length);
1.69 paf 460: SAPI::add_header_attribute(pool(), "content-length", content_length_cstr);
1.65 paf 461: }
1.62 paf 462:
463: // send header
1.69 paf 464: SAPI::send_header(pool());
1.71 paf 465:
1.62 paf 466: // send body
467: if(!header_only)
1.69 paf 468: SAPI::send_body(pool(), body, content_length);
1.50 paf 469: }
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