Annotation of parser3/src/main/pa_request.C, revision 1.71
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:
1.71 ! paf 8: $Id: pa_request.C,v 1.70 2001/03/23 13:08:11 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:
1.28 paf 25: Request::Request(Pool& apool,
1.33 paf 26: Info& ainfo,
1.43 paf 27: String::Untaint_lang adefault_lang) : Pooled(apool),
1.3 paf 28: stack(apool),
1.41 paf 29: ROOT(apool),
30: env(apool),
31: form(apool),
32: request(apool, *this),
33: response(apool),
1.51 paf 34: cookie(apool),
1.3 paf 35: fclasses(apool),
1.43 paf 36: fdefault_lang(adefault_lang), flang(adefault_lang),
37: info(ainfo),
38: fdefault_content_type(0)
1.3 paf 39: {
1.27 paf 40: // root superclass,
1.3 paf 41: // parent of all classes,
42: // operators holder
1.41 paf 43: initialize_root_class(pool(), ROOT);
44: classes().put(*root_class_name, &ROOT);
1.27 paf 45: // table class
46: classes().put(*table_class_name, table_class);
1.3 paf 47:
48: // env class
1.41 paf 49: classes().put(*env_class_name, &env);
1.27 paf 50: // form class
1.41 paf 51: classes().put(*form_class_name, &form);
1.40 paf 52: // request class
1.41 paf 53: classes().put(*request_class_name, &request);
54: // response class
55: classes().put(*response_class_name, &response);
1.51 paf 56: // cookie class
57: classes().put(*cookie_class_name, &cookie);
1.3 paf 58: }
1.1 paf 59:
1.62 paf 60: static void add_header_attribute(const Hash::Key& aattribute, Hash::Val *ameaning,
61: void *info) {
1.48 paf 62: String *attribute_to_exclude=static_cast<String *>(info);
63: if(aattribute==*attribute_to_exclude)
1.45 paf 64: return;
65:
1.62 paf 66: Value& lmeaning=*static_cast<Value *>(ameaning);
67: Pool& pool=lmeaning.pool();
1.45 paf 68:
1.62 paf 69: String attribute(pool);
1.69 paf 70: SAPI::add_header_attribute(pool,
1.62 paf 71: attribute.append(aattribute, String::UL_HEADER, true).cstr(),
72: attributed_meaning_to_string(lmeaning).cstr());
1.45 paf 73: }
74:
1.64 paf 75: /**
76: load MAIN class, execute @main.
77: MAIN class consists of all the auto.p files we'd manage to find
78: plus
79: the file user requested us to process
80: all located classes become children of one another,
81: composing class we name 'MAIN'
82: */
1.63 paf 83: void Request::core(const char *root_auto_path, bool root_auto_fail,
84: const char *site_auto_path, bool site_auto_fail,
1.62 paf 85: bool header_only) {
1.29 paf 86: VStateless_class *main_class=0;
1.41 paf 87: bool need_rethrow=false; Exception rethrow_me;
1.3 paf 88: TRY {
1.29 paf 89: char *auto_filespec=(char *)malloc(MAX_STRING);
90:
1.63 paf 91: // loading root auto.p
92: if(root_auto_path) {
1.64 paf 93: strncpy(auto_filespec, root_auto_path, MAX_STRING-strlen("/" AUTO_FILE_NAME));
94: strcat(auto_filespec, "/" AUTO_FILE_NAME);
1.29 paf 95: main_class=use_file(
1.63 paf 96: auto_filespec, root_auto_fail,
1.37 paf 97: main_class_name, main_class);
1.29 paf 98: }
99:
1.64 paf 100: // loading site auto.p
1.63 paf 101: if(site_auto_path) {
1.64 paf 102: strncpy(auto_filespec, site_auto_path, MAX_STRING-strlen("/" AUTO_FILE_NAME));
103: strcat(auto_filespec, "/" AUTO_FILE_NAME);
1.37 paf 104: main_class=use_file(
1.63 paf 105: auto_filespec, site_auto_fail,
1.37 paf 106: main_class_name, main_class);
1.29 paf 107: }
1.8 paf 108:
1.42 paf 109: Value *element;
1.34 paf 110: // $MAIN:limits hash used here,
111: // until someone with less privileges have overriden them
112: Value *limits=main_class?main_class->get_element(*limits_name):0;
1.35 paf 113: // $limits.post_max_size default 10M
1.34 paf 114: element=limits?limits->get_element(*post_max_size_name):0;
1.36 paf 115: int value=element?(size_t)element->get_double():0;
116: int post_max_size=value?value:10*0x400*400;
1.34 paf 117:
1.41 paf 118: form.fill_fields(*this, post_max_size);
1.51 paf 119: cookie.fill_fields(*this);
1.7 paf 120:
121: // TODO: load site auto.p files, all assigned bases from upper dir
1.39 paf 122: /*char *site_auto_file="Y:\\parser3\\src\\auto.p";
1.16 paf 123: main_class=use_file(
1.39 paf 124: site_auto_file, false/*ignore possible read problem* /,
125: main_class_name, main_class);*/
1.7 paf 126:
1.42 paf 127: // $MAIN:defaults
128: Value *defaults=main_class?main_class->get_element(*defaults_name):0;
1.49 paf 129: fdefault_content_type=defaults?defaults->get_element(*content_type_name):0;
1.5 paf 130:
1.7 paf 131: // compiling requested file
1.35 paf 132: main_class=use_file(info.path_translated, true/*don't ignore read problem*/,
1.25 paf 133: main_class_name, main_class);
134:
135: // execute @main[]
1.41 paf 136: const String *body_string=execute_method(*main_class, *main_method_name);
137: if(!body_string)
1.25 paf 138: THROW(0,0,
139: 0,
140: "'"MAIN_METHOD_NAME"' method not found");
1.41 paf 141:
1.45 paf 142: // extract response body
143: Value *body_value=static_cast<Value *>(
144: response.fields().get(*body_name));
145: if(body_value) // there is some $request.body
146: body_string=&body_value->as_string();// TODO: IMAGE&FILE
147:
148: // OK. write out the result
1.62 paf 149: output_result(*body_string, header_only);
1.3 paf 150: }
151: CATCH(e) {
1.30 paf 152: TRY {
153: // we're returning not result, but error explanation
1.43 paf 154:
155: // reset language to default
156: flang=fdefault_lang;
157:
158: // reset response
159: response.fields().clear();
160:
161: // this is what we'd return in $response:body
1.41 paf 162: const String *body_string=0;
1.43 paf 163:
1.30 paf 164: if(main_class) { // we've managed to end up with some main_class
165: // maybe we'd be lucky enough as to report an error
166: // in a gracefull way...
167: if(Value *value=main_class->get_element(*exception_method_name))
168: if(Junction *junction=value->get_junction())
169: if(const Method *method=junction->method) {
170: // preparing to pass parameters to
171: // @exception[origin;source;comment;type;code]
1.38 paf 172: VMethodFrame frame(pool(), *junction);
173: frame.set_self(*main_class);
1.30 paf 174:
175: const String *problem_source=e.problem_source();
176: // origin
1.44 paf 177: String origin_name(pool(), "origin");
1.38 paf 178: Value *origin_value=0;
1.30 paf 179: #ifndef NO_STRING_ORIGIN
1.38 paf 180: if(problem_source) {
181: const Origin& origin=problem_source->origin();
182: if(origin.file) {
183: char *buf=(char *)malloc(MAX_STRING);
1.42 paf 184: snprintf(buf, MAX_STRING, "%s(%d):",
1.38 paf 185: origin.file, 1+origin.line);
1.44 paf 186: String *origin_file_line=NEW String(pool(),
187: buf, true);
1.38 paf 188: origin_value=NEW VString(*origin_file_line);
189: }
1.30 paf 190: }
191: #endif
1.38 paf 192: frame.store_param(origin_name,
193: origin_value?origin_value:NEW VUnknown(pool()));
1.28 paf 194:
1.30 paf 195: // source
1.44 paf 196: String source_name(pool(), "source");
1.38 paf 197: Value *source_value=0;
1.43 paf 198: if(problem_source) {
1.47 paf 199: String& problem_source_copy=*NEW String(pool());
200: problem_source_copy.append(*problem_source,
201: flang, true);
1.43 paf 202: source_value=NEW VString(problem_source_copy);
203: }
1.38 paf 204: frame.store_param(source_name,
205: source_value?source_value:NEW VUnknown(pool()));
1.30 paf 206:
207: // comment
1.44 paf 208: String comment_name(pool(), "comment");
209: String *comment_value=NEW String(pool(),
210: e.comment(), true);
1.38 paf 211: frame.store_param(comment_name,
1.30 paf 212: NEW VString(*comment_value));
213:
214: // type
1.44 paf 215: String type_name(pool(), "type");
1.30 paf 216: Value *type_value;
1.43 paf 217: if(e.type()) {
1.47 paf 218: String& type_copy=*NEW String(pool());
219: type_value=NEW VString(type_copy.append(*e.type(),
220: flang, true));
1.43 paf 221: } else
1.30 paf 222: type_value=NEW VUnknown(pool());
1.38 paf 223: frame.store_param(type_name, type_value);
1.30 paf 224:
225: // code
1.44 paf 226: String code_name(pool(), "code");
1.30 paf 227: Value *code_value;
1.43 paf 228: if(e.code()) {
1.47 paf 229: String& code_copy=*NEW String(pool());
230: code_value=NEW VString(code_copy.append(*e.code(),
231: flang, true));
1.43 paf 232: } else
1.30 paf 233: code_value=NEW VUnknown(pool());
1.38 paf 234: frame.store_param(code_name, code_value);
1.30 paf 235:
1.43 paf 236: // future $response:body=
237: // execute ^exception[origin;source;comment;type;code]
238: body_string=execute_method(frame, *method);
1.30 paf 239: }
240: }
241:
1.41 paf 242: if(!body_string) { // couldn't report an error beautifully?
243: // doing that ugly
244:
245: // make up result: $origin $source $comment $type $code
246: char *buf=(char *)malloc(MAX_STRING);
1.30 paf 247: size_t printed=0;
248: const String *problem_source=e.problem_source();
249: if(problem_source) {
1.16 paf 250: #ifndef NO_STRING_ORIGIN
1.30 paf 251: const Origin& origin=problem_source->origin();
252: if(origin.file)
1.41 paf 253: printed+=snprintf(buf+printed, MAX_STRING-printed, "%s(%d): ",
1.30 paf 254: origin.file, 1+origin.line);
1.28 paf 255: #endif
1.41 paf 256: printed+=snprintf(buf+printed, MAX_STRING-printed, "'%s' ",
1.30 paf 257: problem_source->cstr());
258: }
1.41 paf 259: printed+=snprintf(buf+printed, MAX_STRING-printed, "%s",
1.30 paf 260: e.comment());
261: const String *type=e.type();
262: if(type) {
1.41 paf 263: printed+=snprintf(buf+printed, MAX_STRING-printed, " type: %s",
1.30 paf 264: type->cstr());
265: const String *code=e.code();
266: if(code)
1.41 paf 267: printed+=snprintf(buf+printed, MAX_STRING-printed, ", code: %s",
1.30 paf 268: code->cstr());
269: }
1.43 paf 270:
271: // future $response:content-type
1.49 paf 272: response.fields().put(*content_type_name,
273: NEW VString(*NEW String(pool(), "text/plain")));
1.43 paf 274: // future $response:body
1.44 paf 275: body_string=NEW String(pool(), buf);
1.30 paf 276: }
1.41 paf 277:
1.45 paf 278: // ERROR. write it out
1.62 paf 279: output_result(*body_string, header_only);
1.3 paf 280: }
1.30 paf 281: CATCH(e) {
1.41 paf 282: // exception in request exception handler
283: // remember to rethrow it
284: rethrow_me=e; need_rethrow=true;
1.1 paf 285: }
1.30 paf 286: END_CATCH
1.1 paf 287: }
1.41 paf 288: END_CATCH // do not use pool() after this point - no exception handler set
289: // any throw() would try to use zero exception() pointer
290:
291: if(need_rethrow) // there were an exception set for us to rethrow?
1.62 paf 292: THROW(rethrow_me.type(), rethrow_me.code(),
1.41 paf 293: rethrow_me.problem_source(),
294: rethrow_me.comment());
1.28 paf 295:
1.1 paf 296: }
297:
1.58 paf 298: /// @todo find|solve cyclic dependences
1.67 paf 299: VStateless_class *Request::use_file(const char *file, bool fail_on_read_problem,
1.26 paf 300: const String *name,
301: VStateless_class *base_class) {
1.61 paf 302: char *source=file_read_text(pool(), file, fail_on_read_problem);
1.3 paf 303: if(!source)
1.12 paf 304: return base_class;
1.3 paf 305:
1.25 paf 306: return use_buf(source, file, 0/*new class*/, name, base_class);
1.16 paf 307: }
308:
1.67 paf 309: VStateless_class *Request::use_buf(const char *source, const char *file,
1.26 paf 310: VStateless_class *aclass, const String *name,
311: VStateless_class *base_class) {
1.5 paf 312: // compile loaded class
1.26 paf 313: VStateless_class& cclass=COMPILE(source, aclass, name, base_class, file);
1.1 paf 314:
1.4 paf 315: // locate and execute possible @auto[] static method
1.25 paf 316: execute_method(cclass, *auto_method_name, false /*no result needed*/);
1.16 paf 317: return &cclass;
1.20 paf 318: }
319:
1.52 paf 320: /**
321: - fail_if_junction(true, junction = fail
322: - fail_if_junction(false, not junction = fail
323: */
1.62 paf 324: void Request::fail_if_junction_(bool is, Value& value,
325: const String& method_name, const char *msg) {
1.20 paf 326:
327: if((value.get_junction()!=0) ^ !is)
328: THROW(0, 0,
329: &method_name,
330: msg);
1.19 paf 331: }
332:
333: char *Request::relative(const char *path, const char *file) {
1.21 paf 334: char *result=(char *)malloc(strlen(path)+strlen(file)+1);
1.19 paf 335: strcpy(result, path);
1.63 paf 336: rsplit(result, '/');
337: strcat(result, "/");
1.19 paf 338: strcat(result, file);
339: return result;
340: }
341:
342: char *Request::absolute(const char *name) {
343: if(name[0]=='/') {
1.35 paf 344: char *result=(char *)malloc(strlen(info.document_root)+strlen(name)+1);
345: strcpy(result, info.document_root);
1.19 paf 346: strcat(result, name);
347: return result;
348: } else
1.59 paf 349: return relative(info.path_translated, name);
1.1 paf 350: }
1.45 paf 351:
1.62 paf 352: void Request::output_result(const String& body_string, bool header_only) {
1.51 paf 353: // header: cookies
354: cookie.output_result();
355:
1.49 paf 356: // set default content-type
1.51 paf 357: if(fdefault_content_type)
358: response.fields().put_dont_replace(*content_type_name, fdefault_content_type);
1.49 paf 359:
1.62 paf 360: // prepare header: $response:fields without :body
361: response.fields().foreach(add_header_attribute, /*excluding*/ body_name);
1.50 paf 362:
1.62 paf 363: // prepare...
1.45 paf 364: const char *body=body_string.cstr();
1.50 paf 365: size_t content_length=strlen(body);
366:
1.62 paf 367: // prepare header: content-length
1.65 paf 368: if(content_length) { // useful for redirecting [header "location: http://..."]
369: char content_length_cstr[MAX_NUMBER];
1.66 paf 370: snprintf(content_length_cstr, MAX_NUMBER, "%lu", content_length);
1.69 paf 371: SAPI::add_header_attribute(pool(), "content-length", content_length_cstr);
1.65 paf 372: }
1.62 paf 373:
374: // send header
1.69 paf 375: SAPI::send_header(pool());
1.71 ! paf 376:
1.62 paf 377: // send body
378: if(!header_only)
1.69 paf 379: SAPI::send_body(pool(), body, content_length);
1.50 paf 380: }
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