Annotation of parser3/src/main/pa_request.C, revision 1.62
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:
1.62 ! paf 8: $Id: pa_request.C,v 1.61.2.3 2001/03/21 13:57:29 paf Exp $
1.1 paf 9: */
10:
1.19 paf 11: #include <string.h>
12:
1.53 paf 13: #include "pa_common.h"
1.1 paf 14: #include "pa_request.h"
1.3 paf 15: #include "pa_wwrapper.h"
16: #include "pa_vclass.h"
1.11 paf 17: #include "_root.h"
1.17 paf 18: #include "_table.h"
1.31 paf 19: #include "pa_globals.h"
1.30 paf 20: #include "pa_vint.h"
21: #include "pa_vmframe.h"
1.32 paf 22: #include "pa_types.h"
1.3 paf 23:
1.28 paf 24: Request::Request(Pool& apool,
1.33 paf 25: Info& ainfo,
1.43 paf 26: String::Untaint_lang adefault_lang) : Pooled(apool),
1.3 paf 27: stack(apool),
1.41 paf 28: ROOT(apool),
29: env(apool),
30: form(apool),
31: request(apool, *this),
32: response(apool),
1.51 paf 33: cookie(apool),
1.3 paf 34: fclasses(apool),
1.43 paf 35: fdefault_lang(adefault_lang), flang(adefault_lang),
36: info(ainfo),
37: fdefault_content_type(0)
1.3 paf 38: {
1.27 paf 39: // root superclass,
1.3 paf 40: // parent of all classes,
41: // operators holder
1.41 paf 42: initialize_root_class(pool(), ROOT);
43: classes().put(*root_class_name, &ROOT);
1.27 paf 44: // table class
45: classes().put(*table_class_name, table_class);
1.3 paf 46:
47: // env class
1.41 paf 48: classes().put(*env_class_name, &env);
1.27 paf 49: // form class
1.41 paf 50: classes().put(*form_class_name, &form);
1.40 paf 51: // request class
1.41 paf 52: classes().put(*request_class_name, &request);
53: // response class
54: classes().put(*response_class_name, &response);
1.51 paf 55: // cookie class
56: classes().put(*cookie_class_name, &cookie);
1.3 paf 57: }
1.1 paf 58:
1.62 ! paf 59: static void add_header_attribute(const Hash::Key& aattribute, Hash::Val *ameaning,
! 60: void *info) {
1.48 paf 61: String *attribute_to_exclude=static_cast<String *>(info);
62: if(aattribute==*attribute_to_exclude)
1.45 paf 63: return;
64:
1.62 ! paf 65: Value& lmeaning=*static_cast<Value *>(ameaning);
! 66: Pool& pool=lmeaning.pool();
1.45 paf 67:
1.62 ! paf 68: String attribute(pool);
! 69: (*service_funcs.add_header_attribute)(pool,
! 70: attribute.append(aattribute, String::UL_HEADER, true).cstr(),
! 71: attributed_meaning_to_string(lmeaning).cstr());
1.45 paf 72: }
73:
1.62 ! paf 74: void Request::core(const char *sys_auto_path1,
! 75: const char *sys_auto_path2,
! 76: bool header_only) {
1.29 paf 77: VStateless_class *main_class=0;
1.41 paf 78: bool need_rethrow=false; Exception rethrow_me;
1.3 paf 79: TRY {
1.29 paf 80: char *auto_filespec=(char *)malloc(MAX_STRING);
81:
82: // load MAIN class,
83: // it consists of all the auto.p files we'd manage to find
84: // plus
85: // the file user requested us to process
86: // all located classes become children of one another,
87: // composing class we name 'MAIN'
88:
89: // loading system auto.p 1
90: if(sys_auto_path1) {
1.30 paf 91: strncpy(auto_filespec, sys_auto_path1, MAX_STRING-strlen(AUTO_FILE_NAME));
1.29 paf 92: strcat(auto_filespec, AUTO_FILE_NAME);
93: main_class=use_file(
94: auto_filespec, false/*ignore possible read problem*/,
1.37 paf 95: main_class_name, main_class);
1.29 paf 96: }
97:
98: // loading system auto.p 2
99: if(sys_auto_path2) {
1.30 paf 100: strncpy(auto_filespec, sys_auto_path2, MAX_STRING-strlen(AUTO_FILE_NAME));
1.29 paf 101: strcat(auto_filespec, AUTO_FILE_NAME);
1.37 paf 102: main_class=use_file(
1.29 paf 103: auto_filespec, false/*ignore possible read problem*/,
1.37 paf 104: main_class_name, main_class);
1.29 paf 105: }
1.8 paf 106:
1.42 paf 107: Value *element;
1.34 paf 108: // $MAIN:limits hash used here,
109: // until someone with less privileges have overriden them
110: Value *limits=main_class?main_class->get_element(*limits_name):0;
1.35 paf 111: // $limits.post_max_size default 10M
1.34 paf 112: element=limits?limits->get_element(*post_max_size_name):0;
1.36 paf 113: int value=element?(size_t)element->get_double():0;
114: int post_max_size=value?value:10*0x400*400;
1.34 paf 115:
1.41 paf 116: form.fill_fields(*this, post_max_size);
1.51 paf 117: cookie.fill_fields(*this);
1.7 paf 118:
119: // TODO: load site auto.p files, all assigned bases from upper dir
1.39 paf 120: /*char *site_auto_file="Y:\\parser3\\src\\auto.p";
1.16 paf 121: main_class=use_file(
1.39 paf 122: site_auto_file, false/*ignore possible read problem* /,
123: main_class_name, main_class);*/
1.7 paf 124:
1.42 paf 125: // $MAIN:defaults
126: Value *defaults=main_class?main_class->get_element(*defaults_name):0;
1.49 paf 127: fdefault_content_type=defaults?defaults->get_element(*content_type_name):0;
1.42 paf 128:
1.7 paf 129: // there must be some auto.p
1.62 ! paf 130: if(/*\*/0&&!main_class)
1.7 paf 131: THROW(0,0,
132: 0,
1.24 paf 133: "no 'auto.p' found (nither system nor any site's)");
1.5 paf 134:
1.7 paf 135: // compiling requested file
1.35 paf 136: main_class=use_file(info.path_translated, true/*don't ignore read problem*/,
1.25 paf 137: main_class_name, main_class);
138:
139: // execute @main[]
1.41 paf 140: const String *body_string=execute_method(*main_class, *main_method_name);
141: if(!body_string)
1.25 paf 142: THROW(0,0,
143: 0,
144: "'"MAIN_METHOD_NAME"' method not found");
1.41 paf 145:
1.45 paf 146: // extract response body
147: Value *body_value=static_cast<Value *>(
148: response.fields().get(*body_name));
149: if(body_value) // there is some $request.body
150: body_string=&body_value->as_string();// TODO: IMAGE&FILE
151:
152: // OK. write out the result
1.62 ! paf 153: output_result(*body_string, header_only);
1.3 paf 154: }
155: CATCH(e) {
1.30 paf 156: TRY {
157: // we're returning not result, but error explanation
1.43 paf 158:
159: // reset language to default
160: flang=fdefault_lang;
161:
162: // reset response
163: response.fields().clear();
164:
165: // this is what we'd return in $response:body
1.41 paf 166: const String *body_string=0;
1.43 paf 167:
1.30 paf 168: if(main_class) { // we've managed to end up with some main_class
169: // maybe we'd be lucky enough as to report an error
170: // in a gracefull way...
171: if(Value *value=main_class->get_element(*exception_method_name))
172: if(Junction *junction=value->get_junction())
173: if(const Method *method=junction->method) {
174: // preparing to pass parameters to
175: // @exception[origin;source;comment;type;code]
1.38 paf 176: VMethodFrame frame(pool(), *junction);
177: frame.set_self(*main_class);
1.30 paf 178:
179: const String *problem_source=e.problem_source();
180: // origin
1.44 paf 181: String origin_name(pool(), "origin");
1.38 paf 182: Value *origin_value=0;
1.30 paf 183: #ifndef NO_STRING_ORIGIN
1.38 paf 184: if(problem_source) {
185: const Origin& origin=problem_source->origin();
186: if(origin.file) {
187: char *buf=(char *)malloc(MAX_STRING);
1.42 paf 188: snprintf(buf, MAX_STRING, "%s(%d):",
1.38 paf 189: origin.file, 1+origin.line);
1.44 paf 190: String *origin_file_line=NEW String(pool(),
191: buf, true);
1.38 paf 192: origin_value=NEW VString(*origin_file_line);
193: }
1.30 paf 194: }
195: #endif
1.38 paf 196: frame.store_param(origin_name,
197: origin_value?origin_value:NEW VUnknown(pool()));
1.28 paf 198:
1.30 paf 199: // source
1.44 paf 200: String source_name(pool(), "source");
1.38 paf 201: Value *source_value=0;
1.43 paf 202: if(problem_source) {
1.47 paf 203: String& problem_source_copy=*NEW String(pool());
204: problem_source_copy.append(*problem_source,
205: flang, true);
1.43 paf 206: source_value=NEW VString(problem_source_copy);
207: }
1.38 paf 208: frame.store_param(source_name,
209: source_value?source_value:NEW VUnknown(pool()));
1.30 paf 210:
211: // comment
1.44 paf 212: String comment_name(pool(), "comment");
213: String *comment_value=NEW String(pool(),
214: e.comment(), true);
1.38 paf 215: frame.store_param(comment_name,
1.30 paf 216: NEW VString(*comment_value));
217:
218: // type
1.44 paf 219: String type_name(pool(), "type");
1.30 paf 220: Value *type_value;
1.43 paf 221: if(e.type()) {
1.47 paf 222: String& type_copy=*NEW String(pool());
223: type_value=NEW VString(type_copy.append(*e.type(),
224: flang, true));
1.43 paf 225: } else
1.30 paf 226: type_value=NEW VUnknown(pool());
1.38 paf 227: frame.store_param(type_name, type_value);
1.30 paf 228:
229: // code
1.44 paf 230: String code_name(pool(), "code");
1.30 paf 231: Value *code_value;
1.43 paf 232: if(e.code()) {
1.47 paf 233: String& code_copy=*NEW String(pool());
234: code_value=NEW VString(code_copy.append(*e.code(),
235: flang, true));
1.43 paf 236: } else
1.30 paf 237: code_value=NEW VUnknown(pool());
1.38 paf 238: frame.store_param(code_name, code_value);
1.30 paf 239:
1.43 paf 240: // future $response:body=
241: // execute ^exception[origin;source;comment;type;code]
242: body_string=execute_method(frame, *method);
1.30 paf 243: }
244: }
245:
1.41 paf 246: if(!body_string) { // couldn't report an error beautifully?
247: // doing that ugly
248:
249: // make up result: $origin $source $comment $type $code
250: char *buf=(char *)malloc(MAX_STRING);
1.30 paf 251: size_t printed=0;
252: const String *problem_source=e.problem_source();
253: if(problem_source) {
1.16 paf 254: #ifndef NO_STRING_ORIGIN
1.30 paf 255: const Origin& origin=problem_source->origin();
256: if(origin.file)
1.41 paf 257: printed+=snprintf(buf+printed, MAX_STRING-printed, "%s(%d): ",
1.30 paf 258: origin.file, 1+origin.line);
1.28 paf 259: #endif
1.41 paf 260: printed+=snprintf(buf+printed, MAX_STRING-printed, "'%s' ",
1.30 paf 261: problem_source->cstr());
262: }
1.41 paf 263: printed+=snprintf(buf+printed, MAX_STRING-printed, "%s",
1.30 paf 264: e.comment());
265: const String *type=e.type();
266: if(type) {
1.41 paf 267: printed+=snprintf(buf+printed, MAX_STRING-printed, " type: %s",
1.30 paf 268: type->cstr());
269: const String *code=e.code();
270: if(code)
1.41 paf 271: printed+=snprintf(buf+printed, MAX_STRING-printed, ", code: %s",
1.30 paf 272: code->cstr());
273: }
1.43 paf 274:
275: // future $response:content-type
1.49 paf 276: response.fields().put(*content_type_name,
277: NEW VString(*NEW String(pool(), "text/plain")));
1.43 paf 278: // future $response:body
1.44 paf 279: body_string=NEW String(pool(), buf);
1.30 paf 280: }
1.41 paf 281:
1.45 paf 282: // ERROR. write it out
1.62 ! paf 283: output_result(*body_string, header_only);
1.3 paf 284: }
1.30 paf 285: CATCH(e) {
1.41 paf 286: // exception in request exception handler
287: // remember to rethrow it
288: rethrow_me=e; need_rethrow=true;
1.1 paf 289: }
1.30 paf 290: END_CATCH
1.1 paf 291: }
1.41 paf 292: END_CATCH // do not use pool() after this point - no exception handler set
293: // any throw() would try to use zero exception() pointer
294:
295: if(need_rethrow) // there were an exception set for us to rethrow?
1.62 ! paf 296: THROW(rethrow_me.type(), rethrow_me.code(),
1.41 paf 297: rethrow_me.problem_source(),
298: rethrow_me.comment());
1.28 paf 299:
1.1 paf 300: }
301:
1.58 paf 302: /// @todo find|solve cyclic dependences
1.26 paf 303: VStateless_class *Request::use_file(
304: const char *file, bool fail_on_read_problem,
305: const String *name,
306: VStateless_class *base_class) {
1.61 paf 307: char *source=file_read_text(pool(), file, fail_on_read_problem);
1.3 paf 308: if(!source)
1.12 paf 309: return base_class;
1.3 paf 310:
1.25 paf 311: return use_buf(source, file, 0/*new class*/, name, base_class);
1.16 paf 312: }
313:
1.26 paf 314: VStateless_class *Request::use_buf(
315: const char *source, const char *file,
316: VStateless_class *aclass, const String *name,
317: VStateless_class *base_class) {
1.5 paf 318: // compile loaded class
1.26 paf 319: VStateless_class& cclass=COMPILE(source, aclass, name, base_class, file);
1.1 paf 320:
1.4 paf 321: // locate and execute possible @auto[] static method
1.25 paf 322: execute_method(cclass, *auto_method_name, false /*no result needed*/);
1.16 paf 323: return &cclass;
1.20 paf 324: }
325:
1.52 paf 326: /**
327: - fail_if_junction(true, junction = fail
328: - fail_if_junction(false, not junction = fail
329: */
1.62 ! paf 330: void Request::fail_if_junction_(bool is, Value& value,
! 331: const String& method_name, const char *msg) {
1.20 paf 332:
333: if((value.get_junction()!=0) ^ !is)
334: THROW(0, 0,
335: &method_name,
336: msg);
1.19 paf 337: }
338:
339: char *Request::relative(const char *path, const char *file) {
1.21 paf 340: char *result=(char *)malloc(strlen(path)+strlen(file)+1);
1.19 paf 341: strcpy(result, path);
1.32 paf 342: rsplit(result, PATH_DELIMITER_CHAR);
343: strcat(result, PATH_DELIMITER_STRING);
1.19 paf 344: strcat(result, file);
345: return result;
346: }
347:
348: char *Request::absolute(const char *name) {
349: if(name[0]=='/') {
1.35 paf 350: char *result=(char *)malloc(strlen(info.document_root)+strlen(name)+1);
351: strcpy(result, info.document_root);
1.19 paf 352: strcat(result, name);
353: return result;
354: } else
1.59 paf 355: return relative(info.path_translated, name);
1.1 paf 356: }
1.45 paf 357:
1.62 ! paf 358: void Request::output_result(const String& body_string, bool header_only) {
1.51 paf 359: // header: cookies
360: cookie.output_result();
361:
1.49 paf 362: // set default content-type
1.51 paf 363: if(fdefault_content_type)
364: response.fields().put_dont_replace(*content_type_name, fdefault_content_type);
1.49 paf 365:
1.62 ! paf 366: // prepare header: $response:fields without :body
! 367: response.fields().foreach(add_header_attribute, /*excluding*/ body_name);
1.50 paf 368:
1.62 ! paf 369: // prepare...
1.45 paf 370: const char *body=body_string.cstr();
1.50 paf 371: size_t content_length=strlen(body);
372:
1.62 ! paf 373: // prepare header: content-length
1.50 paf 374: char content_length_cstr[MAX_NUMBER];
375: snprintf(content_length_cstr, MAX_NUMBER, "%d", content_length);
1.62 ! paf 376: (*service_funcs.add_header_attribute)(pool(), "content-length", content_length_cstr);
! 377:
! 378: // send header
! 379: (*service_funcs.send_header)(pool());
! 380:
! 381: // send body
! 382: if(!header_only)
! 383: (*service_funcs.send_body)(pool(), body, content_length);
1.50 paf 384: }
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