Annotation of parser3/src/main/pa_request.C, revision 1.50
1.1 paf 1: /*
1.9 paf 2: Parser
3: Copyright (c) 2001 ArtLebedev Group (http://www.artlebedev.com)
1.14 paf 4: Author: Alexander Petrosyan <paf@design.ru> (http://design.ru/paf)
1.9 paf 5:
1.50 ! paf 6: $Id: pa_request.C,v 1.49 2001/03/18 17:39:29 paf Exp $
1.1 paf 7: */
8:
1.19 paf 9: #include <string.h>
10:
1.1 paf 11: #include "pa_request.h"
1.3 paf 12: #include "pa_wwrapper.h"
13: #include "pa_common.h"
14: #include "pa_vclass.h"
1.11 paf 15: #include "_root.h"
16: #include "_env.h"
1.17 paf 17: #include "_table.h"
1.31 paf 18: #include "pa_globals.h"
1.30 paf 19: #include "pa_vint.h"
20: #include "pa_vmframe.h"
1.32 paf 21: #include "pa_types.h"
1.3 paf 22:
1.28 paf 23: Request::Request(Pool& apool,
1.33 paf 24: Info& ainfo,
1.43 paf 25: String::Untaint_lang adefault_lang) : Pooled(apool),
1.3 paf 26: stack(apool),
1.41 paf 27: ROOT(apool),
28: env(apool),
29: form(apool),
30: request(apool, *this),
31: response(apool),
1.3 paf 32: fclasses(apool),
1.43 paf 33: fdefault_lang(adefault_lang), flang(adefault_lang),
34: info(ainfo),
35: fdefault_content_type(0)
1.3 paf 36: {
1.27 paf 37: // root superclass,
1.3 paf 38: // parent of all classes,
39: // operators holder
1.41 paf 40: initialize_root_class(pool(), ROOT);
41: classes().put(*root_class_name, &ROOT);
1.27 paf 42: // table class
43: classes().put(*table_class_name, table_class);
44: // table_class->set_name(*table_class_name);
1.3 paf 45:
46: // env class
1.41 paf 47: classes().put(*env_class_name, &env);
1.27 paf 48: // form class
1.41 paf 49: classes().put(*form_class_name, &form);
1.40 paf 50: // request class
1.41 paf 51: classes().put(*request_class_name, &request);
52: // response class
53: classes().put(*response_class_name, &response);
1.3 paf 54: }
1.1 paf 55:
1.47 paf 56: static void append_attribute_subattribute(const Hash::Key& akey, Hash::Value *avalue,
57: void *info) {
58: if(akey==VALUE_NAME)
59: return;
60:
61: // ...; charset=windows1251
62: String *string=static_cast<String *>(info);
63: string->APPEND_CONST("; ");
64:
65: string->append(akey, String::Untaint_lang::URI, true);
66:
67: string->APPEND_CONST("=");
68:
69: Value *value=static_cast<Value *>(avalue);
70: string->append(value->as_string(), String::Untaint_lang::URI, true);
71: }
1.48 paf 72: static void output_response_attribute(const Hash::Key& aattribute, Hash::Value *ameaning,
1.47 paf 73: void *info) {
1.48 paf 74: String *attribute_to_exclude=static_cast<String *>(info);
75: if(aattribute==*attribute_to_exclude)
1.45 paf 76: return;
77:
1.48 paf 78: String attribute(aattribute.pool());
79: attribute.append(aattribute, String::Untaint_lang::URI, true);
1.45 paf 80:
1.47 paf 81: Value *meaning=static_cast<Value *>(ameaning);
82: String string(meaning->pool());
1.49 paf 83: if(Hash *hash=meaning->get_hash()) {
1.47 paf 84: // $value(value) $subattribute(subattribute value)
1.49 paf 85: Value *value=static_cast<Value *>(hash->get(*value_name));
1.47 paf 86: if(value)
87: string.append(value->as_string(), String::Untaint_lang::URI, true);
88:
1.49 paf 89: hash->foreach(append_attribute_subattribute, &string);
1.47 paf 90: } else // string value
91: string.append(meaning->as_string(), String::Untaint_lang::URI, true);
1.45 paf 92:
93: (*service_funcs.output_header_attribute)(
1.48 paf 94: attribute.cstr(),
1.47 paf 95: string.cstr());
1.45 paf 96: }
97:
1.41 paf 98: void Request::core(Exception& system_exception,
99: const char *sys_auto_path1,
100: const char *sys_auto_path2) {
1.29 paf 101: VStateless_class *main_class=0;
1.41 paf 102: bool need_rethrow=false; Exception rethrow_me;
1.3 paf 103: TRY {
1.29 paf 104: char *auto_filespec=(char *)malloc(MAX_STRING);
105:
106: // load MAIN class,
107: // it consists of all the auto.p files we'd manage to find
108: // plus
109: // the file user requested us to process
110: // all located classes become children of one another,
111: // composing class we name 'MAIN'
112:
113: // loading system auto.p 1
114: if(sys_auto_path1) {
1.30 paf 115: strncpy(auto_filespec, sys_auto_path1, MAX_STRING-strlen(AUTO_FILE_NAME));
1.29 paf 116: strcat(auto_filespec, AUTO_FILE_NAME);
117: main_class=use_file(
118: auto_filespec, false/*ignore possible read problem*/,
1.37 paf 119: main_class_name, main_class);
1.29 paf 120: }
121:
122: // loading system auto.p 2
123: if(sys_auto_path2) {
1.30 paf 124: strncpy(auto_filespec, sys_auto_path2, MAX_STRING-strlen(AUTO_FILE_NAME));
1.29 paf 125: strcat(auto_filespec, AUTO_FILE_NAME);
1.37 paf 126: main_class=use_file(
1.29 paf 127: auto_filespec, false/*ignore possible read problem*/,
1.37 paf 128: main_class_name, main_class);
1.29 paf 129: }
1.8 paf 130:
1.42 paf 131: Value *element;
1.34 paf 132: // $MAIN:limits hash used here,
133: // until someone with less privileges have overriden them
134: Value *limits=main_class?main_class->get_element(*limits_name):0;
1.35 paf 135: // $limits.post_max_size default 10M
1.34 paf 136: element=limits?limits->get_element(*post_max_size_name):0;
1.36 paf 137: int value=element?(size_t)element->get_double():0;
138: int post_max_size=value?value:10*0x400*400;
1.34 paf 139:
1.41 paf 140: form.fill_fields(*this, post_max_size);
1.7 paf 141:
142: // TODO: load site auto.p files, all assigned bases from upper dir
1.39 paf 143: /*char *site_auto_file="Y:\\parser3\\src\\auto.p";
1.16 paf 144: main_class=use_file(
1.39 paf 145: site_auto_file, false/*ignore possible read problem* /,
146: main_class_name, main_class);*/
1.7 paf 147:
1.42 paf 148: // $MAIN:defaults
149: Value *defaults=main_class?main_class->get_element(*defaults_name):0;
1.49 paf 150: fdefault_content_type=defaults?defaults->get_element(*content_type_name):0;
1.42 paf 151:
1.7 paf 152: // there must be some auto.p
1.12 paf 153: if(!main_class)
1.7 paf 154: THROW(0,0,
155: 0,
1.24 paf 156: "no 'auto.p' found (nither system nor any site's)");
1.5 paf 157:
1.7 paf 158: // compiling requested file
1.35 paf 159: main_class=use_file(info.path_translated, true/*don't ignore read problem*/,
1.25 paf 160: main_class_name, main_class);
161:
162: // execute @main[]
1.41 paf 163: const String *body_string=execute_method(*main_class, *main_method_name);
164: if(!body_string)
1.25 paf 165: THROW(0,0,
166: 0,
167: "'"MAIN_METHOD_NAME"' method not found");
1.41 paf 168:
1.45 paf 169: // extract response body
170: Value *body_value=static_cast<Value *>(
171: response.fields().get(*body_name));
172: if(body_value) // there is some $request.body
173: body_string=&body_value->as_string();// TODO: IMAGE&FILE
174:
175: // OK. write out the result
176: output_result(*body_string);
1.3 paf 177: }
178: CATCH(e) {
1.30 paf 179: TRY {
180: // we're returning not result, but error explanation
1.43 paf 181:
182: // reset language to default
183: flang=fdefault_lang;
184:
185: // reset response
186: response.fields().clear();
187:
188: // this is what we'd return in $response:body
1.41 paf 189: const String *body_string=0;
1.43 paf 190:
1.30 paf 191: if(main_class) { // we've managed to end up with some main_class
192: // maybe we'd be lucky enough as to report an error
193: // in a gracefull way...
194: if(Value *value=main_class->get_element(*exception_method_name))
195: if(Junction *junction=value->get_junction())
196: if(const Method *method=junction->method) {
197: // preparing to pass parameters to
198: // @exception[origin;source;comment;type;code]
1.38 paf 199: VMethodFrame frame(pool(), *junction);
200: frame.set_self(*main_class);
1.30 paf 201:
202: const String *problem_source=e.problem_source();
203: // origin
1.44 paf 204: String origin_name(pool(), "origin");
1.38 paf 205: Value *origin_value=0;
1.30 paf 206: #ifndef NO_STRING_ORIGIN
1.38 paf 207: if(problem_source) {
208: const Origin& origin=problem_source->origin();
209: if(origin.file) {
210: char *buf=(char *)malloc(MAX_STRING);
1.42 paf 211: snprintf(buf, MAX_STRING, "%s(%d):",
1.38 paf 212: origin.file, 1+origin.line);
1.44 paf 213: String *origin_file_line=NEW String(pool(),
214: buf, true);
1.38 paf 215: origin_value=NEW VString(*origin_file_line);
216: }
1.30 paf 217: }
218: #endif
1.38 paf 219: frame.store_param(origin_name,
220: origin_value?origin_value:NEW VUnknown(pool()));
1.28 paf 221:
1.30 paf 222: // source
1.44 paf 223: String source_name(pool(), "source");
1.38 paf 224: Value *source_value=0;
1.43 paf 225: if(problem_source) {
1.47 paf 226: String& problem_source_copy=*NEW String(pool());
227: problem_source_copy.append(*problem_source,
228: flang, true);
1.43 paf 229: source_value=NEW VString(problem_source_copy);
230: }
1.38 paf 231: frame.store_param(source_name,
232: source_value?source_value:NEW VUnknown(pool()));
1.30 paf 233:
234: // comment
1.44 paf 235: String comment_name(pool(), "comment");
236: String *comment_value=NEW String(pool(),
237: e.comment(), true);
1.38 paf 238: frame.store_param(comment_name,
1.30 paf 239: NEW VString(*comment_value));
240:
241: // type
1.44 paf 242: String type_name(pool(), "type");
1.30 paf 243: Value *type_value;
1.43 paf 244: if(e.type()) {
1.47 paf 245: String& type_copy=*NEW String(pool());
246: type_value=NEW VString(type_copy.append(*e.type(),
247: flang, true));
1.43 paf 248: } else
1.30 paf 249: type_value=NEW VUnknown(pool());
1.38 paf 250: frame.store_param(type_name, type_value);
1.30 paf 251:
252: // code
1.44 paf 253: String code_name(pool(), "code");
1.30 paf 254: Value *code_value;
1.43 paf 255: if(e.code()) {
1.47 paf 256: String& code_copy=*NEW String(pool());
257: code_value=NEW VString(code_copy.append(*e.code(),
258: flang, true));
1.43 paf 259: } else
1.30 paf 260: code_value=NEW VUnknown(pool());
1.38 paf 261: frame.store_param(code_name, code_value);
1.30 paf 262:
1.43 paf 263: // future $response:body=
264: // execute ^exception[origin;source;comment;type;code]
265: body_string=execute_method(frame, *method);
1.30 paf 266: }
267: }
268:
1.41 paf 269: if(!body_string) { // couldn't report an error beautifully?
270: // doing that ugly
271:
272: // make up result: $origin $source $comment $type $code
273: char *buf=(char *)malloc(MAX_STRING);
1.30 paf 274: size_t printed=0;
275: const String *problem_source=e.problem_source();
276: if(problem_source) {
1.16 paf 277: #ifndef NO_STRING_ORIGIN
1.30 paf 278: const Origin& origin=problem_source->origin();
279: if(origin.file)
1.41 paf 280: printed+=snprintf(buf+printed, MAX_STRING-printed, "%s(%d): ",
1.30 paf 281: origin.file, 1+origin.line);
1.28 paf 282: #endif
1.41 paf 283: printed+=snprintf(buf+printed, MAX_STRING-printed, "'%s' ",
1.30 paf 284: problem_source->cstr());
285: }
1.41 paf 286: printed+=snprintf(buf+printed, MAX_STRING-printed, "%s",
1.30 paf 287: e.comment());
288: const String *type=e.type();
289: if(type) {
1.41 paf 290: printed+=snprintf(buf+printed, MAX_STRING-printed, " type: %s",
1.30 paf 291: type->cstr());
292: const String *code=e.code();
293: if(code)
1.41 paf 294: printed+=snprintf(buf+printed, MAX_STRING-printed, ", code: %s",
1.30 paf 295: code->cstr());
296: }
1.43 paf 297:
298: // future $response:content-type
1.49 paf 299: response.fields().put(*content_type_name,
300: NEW VString(*NEW String(pool(), "text/plain")));
1.43 paf 301: // future $response:body
1.44 paf 302: body_string=NEW String(pool(), buf);
1.30 paf 303: }
1.41 paf 304:
1.45 paf 305: // ERROR. write it out
306: output_result(*body_string);
1.3 paf 307: }
1.30 paf 308: CATCH(e) {
1.41 paf 309: // exception in request exception handler
310: // remember to rethrow it
311: rethrow_me=e; need_rethrow=true;
1.1 paf 312: }
1.30 paf 313: END_CATCH
1.1 paf 314: }
1.41 paf 315: END_CATCH // do not use pool() after this point - no exception handler set
316: // any throw() would try to use zero exception() pointer
317:
318: if(need_rethrow) // there were an exception set for us to rethrow?
319: system_exception._throw(rethrow_me.type(), rethrow_me.code(),
320: rethrow_me.problem_source(),
321: rethrow_me.comment());
1.28 paf 322:
1.1 paf 323: }
324:
1.26 paf 325: VStateless_class *Request::use_file(
326: const char *file, bool fail_on_read_problem,
327: const String *name,
328: VStateless_class *base_class) {
1.3 paf 329: // TODO: обнаружить|решить cyclic dependences
1.5 paf 330: char *source=file_read(pool(), file, fail_on_read_problem);
1.3 paf 331: if(!source)
1.12 paf 332: return base_class;
1.3 paf 333:
1.25 paf 334: return use_buf(source, file, 0/*new class*/, name, base_class);
1.16 paf 335: }
336:
1.26 paf 337: VStateless_class *Request::use_buf(
338: const char *source, const char *file,
339: VStateless_class *aclass, const String *name,
340: VStateless_class *base_class) {
1.5 paf 341: // compile loaded class
1.26 paf 342: VStateless_class& cclass=COMPILE(source, aclass, name, base_class, file);
1.1 paf 343:
1.4 paf 344: // locate and execute possible @auto[] static method
1.25 paf 345: execute_method(cclass, *auto_method_name, false /*no result needed*/);
1.16 paf 346: return &cclass;
1.20 paf 347: }
348:
349: void Request::fail_if_junction_(bool is,
1.26 paf 350: Value& value, const String& method_name, char *msg) {
1.20 paf 351:
352: // fail_if_junction(true, junction = fail
353: // fail_if_junction(false, not junction = fail
354: if((value.get_junction()!=0) ^ !is)
355: THROW(0, 0,
356: &method_name,
357: msg);
1.19 paf 358: }
359:
360: char *Request::relative(const char *path, const char *file) {
1.21 paf 361: char *result=(char *)malloc(strlen(path)+strlen(file)+1);
1.19 paf 362: strcpy(result, path);
1.32 paf 363: rsplit(result, PATH_DELIMITER_CHAR);
364: strcat(result, PATH_DELIMITER_STRING);
1.19 paf 365: strcat(result, file);
366: return result;
367: }
368:
369: char *Request::absolute(const char *name) {
370: if(name[0]=='/') {
1.35 paf 371: char *result=(char *)malloc(strlen(info.document_root)+strlen(name)+1);
372: strcpy(result, info.document_root);
1.19 paf 373: strcat(result, name);
374: return result;
375: } else
1.40 paf 376: return relative(info.uri, name);
1.1 paf 377: }
1.45 paf 378:
379: void Request::output_result(const String& body_string) {
1.49 paf 380: // set default content-type
381: response.fields().put_dont_replace(*content_type_name, fdefault_content_type);
382:
1.50 ! paf 383: // header: $response:fields without :body
1.45 paf 384: response.fields().foreach(output_response_attribute, /*excluding*/ body_name);
1.50 ! paf 385:
! 386: // prepare
1.45 paf 387: const char *body=body_string.cstr();
1.50 ! paf 388: size_t content_length=strlen(body);
! 389:
! 390: // header: content-length
! 391: char content_length_cstr[MAX_NUMBER];
! 392: snprintf(content_length_cstr, MAX_NUMBER, "%d", content_length);
! 393: (*service_funcs.output_header_attribute)("content-length", content_length_cstr);
! 394: // body
! 395: (*service_funcs.output_body)(body, content_length);
! 396: }
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