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