Annotation of parser3/src/main/pa_request.C, revision 1.54
1.54 ! paf 1: /** @file
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:
1.54 ! paf 6: $Id: pa_request.C,v 1.53 2001/03/19 16:06:14 paf Exp $
1.1 paf 7: */
8:
1.19 paf 9: #include <string.h>
10:
1.53 paf 11: #include "pa_common.h"
1.1 paf 12: #include "pa_request.h"
1.3 paf 13: #include "pa_wwrapper.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),
1.51 paf 32: cookie(apool),
1.3 paf 33: fclasses(apool),
1.43 paf 34: fdefault_lang(adefault_lang), flang(adefault_lang),
35: info(ainfo),
36: fdefault_content_type(0)
1.3 paf 37: {
1.27 paf 38: // root superclass,
1.3 paf 39: // parent of all classes,
40: // operators holder
1.41 paf 41: initialize_root_class(pool(), ROOT);
42: classes().put(*root_class_name, &ROOT);
1.27 paf 43: // table class
44: classes().put(*table_class_name, table_class);
45: // table_class->set_name(*table_class_name);
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:
1.48 paf 59: static void output_response_attribute(const Hash::Key& aattribute, Hash::Value *ameaning,
1.47 paf 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:
1.48 paf 65: String attribute(aattribute.pool());
1.51 paf 66: attribute.append(aattribute, String::Untaint_lang::HEADER, true);
1.45 paf 67:
68: (*service_funcs.output_header_attribute)(
1.48 paf 69: attribute.cstr(),
1.51 paf 70: attributed_meaning_string(static_cast<Value *>(ameaning)).cstr());
1.45 paf 71: }
72:
1.41 paf 73: void Request::core(Exception& system_exception,
74: const char *sys_auto_path1,
75: const char *sys_auto_path2) {
1.29 paf 76: VStateless_class *main_class=0;
1.41 paf 77: bool need_rethrow=false; Exception rethrow_me;
1.3 paf 78: TRY {
1.29 paf 79: char *auto_filespec=(char *)malloc(MAX_STRING);
80:
81: // load MAIN class,
82: // it 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:
88: // loading system auto.p 1
89: if(sys_auto_path1) {
1.30 paf 90: strncpy(auto_filespec, sys_auto_path1, MAX_STRING-strlen(AUTO_FILE_NAME));
1.29 paf 91: strcat(auto_filespec, AUTO_FILE_NAME);
92: main_class=use_file(
93: auto_filespec, false/*ignore possible read problem*/,
1.37 paf 94: main_class_name, main_class);
1.29 paf 95: }
96:
97: // loading system auto.p 2
98: if(sys_auto_path2) {
1.30 paf 99: strncpy(auto_filespec, sys_auto_path2, MAX_STRING-strlen(AUTO_FILE_NAME));
1.29 paf 100: strcat(auto_filespec, AUTO_FILE_NAME);
1.37 paf 101: main_class=use_file(
1.29 paf 102: auto_filespec, false/*ignore possible read problem*/,
1.37 paf 103: main_class_name, main_class);
1.29 paf 104: }
1.8 paf 105:
1.42 paf 106: Value *element;
1.34 paf 107: // $MAIN:limits hash used here,
108: // until someone with less privileges have overriden them
109: Value *limits=main_class?main_class->get_element(*limits_name):0;
1.35 paf 110: // $limits.post_max_size default 10M
1.34 paf 111: element=limits?limits->get_element(*post_max_size_name):0;
1.36 paf 112: int value=element?(size_t)element->get_double():0;
113: int post_max_size=value?value:10*0x400*400;
1.34 paf 114:
1.41 paf 115: form.fill_fields(*this, post_max_size);
1.51 paf 116: cookie.fill_fields(*this);
1.7 paf 117:
118: // TODO: load site auto.p files, all assigned bases from upper dir
1.39 paf 119: /*char *site_auto_file="Y:\\parser3\\src\\auto.p";
1.16 paf 120: main_class=use_file(
1.39 paf 121: site_auto_file, false/*ignore possible read problem* /,
122: main_class_name, main_class);*/
1.7 paf 123:
1.42 paf 124: // $MAIN:defaults
125: Value *defaults=main_class?main_class->get_element(*defaults_name):0;
1.49 paf 126: fdefault_content_type=defaults?defaults->get_element(*content_type_name):0;
1.42 paf 127:
1.7 paf 128: // there must be some auto.p
1.12 paf 129: if(!main_class)
1.7 paf 130: THROW(0,0,
131: 0,
1.24 paf 132: "no 'auto.p' found (nither system nor any site's)");
1.5 paf 133:
1.7 paf 134: // compiling requested file
1.35 paf 135: main_class=use_file(info.path_translated, true/*don't ignore read problem*/,
1.25 paf 136: main_class_name, main_class);
137:
138: // execute @main[]
1.41 paf 139: const String *body_string=execute_method(*main_class, *main_method_name);
140: if(!body_string)
1.25 paf 141: THROW(0,0,
142: 0,
143: "'"MAIN_METHOD_NAME"' method not found");
1.41 paf 144:
1.45 paf 145: // extract response body
146: Value *body_value=static_cast<Value *>(
147: response.fields().get(*body_name));
148: if(body_value) // there is some $request.body
149: body_string=&body_value->as_string();// TODO: IMAGE&FILE
150:
151: // OK. write out the result
152: output_result(*body_string);
1.3 paf 153: }
154: CATCH(e) {
1.30 paf 155: TRY {
156: // we're returning not result, but error explanation
1.43 paf 157:
158: // reset language to default
159: flang=fdefault_lang;
160:
161: // reset response
162: response.fields().clear();
163:
164: // this is what we'd return in $response:body
1.41 paf 165: const String *body_string=0;
1.43 paf 166:
1.30 paf 167: if(main_class) { // we've managed to end up with some main_class
168: // maybe we'd be lucky enough as to report an error
169: // in a gracefull way...
170: if(Value *value=main_class->get_element(*exception_method_name))
171: if(Junction *junction=value->get_junction())
172: if(const Method *method=junction->method) {
173: // preparing to pass parameters to
174: // @exception[origin;source;comment;type;code]
1.38 paf 175: VMethodFrame frame(pool(), *junction);
176: frame.set_self(*main_class);
1.30 paf 177:
178: const String *problem_source=e.problem_source();
179: // origin
1.44 paf 180: String origin_name(pool(), "origin");
1.38 paf 181: Value *origin_value=0;
1.30 paf 182: #ifndef NO_STRING_ORIGIN
1.38 paf 183: if(problem_source) {
184: const Origin& origin=problem_source->origin();
185: if(origin.file) {
186: char *buf=(char *)malloc(MAX_STRING);
1.42 paf 187: snprintf(buf, MAX_STRING, "%s(%d):",
1.38 paf 188: origin.file, 1+origin.line);
1.44 paf 189: String *origin_file_line=NEW String(pool(),
190: buf, true);
1.38 paf 191: origin_value=NEW VString(*origin_file_line);
192: }
1.30 paf 193: }
194: #endif
1.38 paf 195: frame.store_param(origin_name,
196: origin_value?origin_value:NEW VUnknown(pool()));
1.28 paf 197:
1.30 paf 198: // source
1.44 paf 199: String source_name(pool(), "source");
1.38 paf 200: Value *source_value=0;
1.43 paf 201: if(problem_source) {
1.47 paf 202: String& problem_source_copy=*NEW String(pool());
203: problem_source_copy.append(*problem_source,
204: flang, true);
1.43 paf 205: source_value=NEW VString(problem_source_copy);
206: }
1.38 paf 207: frame.store_param(source_name,
208: source_value?source_value:NEW VUnknown(pool()));
1.30 paf 209:
210: // comment
1.44 paf 211: String comment_name(pool(), "comment");
212: String *comment_value=NEW String(pool(),
213: e.comment(), true);
1.38 paf 214: frame.store_param(comment_name,
1.30 paf 215: NEW VString(*comment_value));
216:
217: // type
1.44 paf 218: String type_name(pool(), "type");
1.30 paf 219: Value *type_value;
1.43 paf 220: if(e.type()) {
1.47 paf 221: String& type_copy=*NEW String(pool());
222: type_value=NEW VString(type_copy.append(*e.type(),
223: flang, true));
1.43 paf 224: } else
1.30 paf 225: type_value=NEW VUnknown(pool());
1.38 paf 226: frame.store_param(type_name, type_value);
1.30 paf 227:
228: // code
1.44 paf 229: String code_name(pool(), "code");
1.30 paf 230: Value *code_value;
1.43 paf 231: if(e.code()) {
1.47 paf 232: String& code_copy=*NEW String(pool());
233: code_value=NEW VString(code_copy.append(*e.code(),
234: flang, true));
1.43 paf 235: } else
1.30 paf 236: code_value=NEW VUnknown(pool());
1.38 paf 237: frame.store_param(code_name, code_value);
1.30 paf 238:
1.43 paf 239: // future $response:body=
240: // execute ^exception[origin;source;comment;type;code]
241: body_string=execute_method(frame, *method);
1.30 paf 242: }
243: }
244:
1.41 paf 245: if(!body_string) { // couldn't report an error beautifully?
246: // doing that ugly
247:
248: // make up result: $origin $source $comment $type $code
249: char *buf=(char *)malloc(MAX_STRING);
1.30 paf 250: size_t printed=0;
251: const String *problem_source=e.problem_source();
252: if(problem_source) {
1.16 paf 253: #ifndef NO_STRING_ORIGIN
1.30 paf 254: const Origin& origin=problem_source->origin();
255: if(origin.file)
1.41 paf 256: printed+=snprintf(buf+printed, MAX_STRING-printed, "%s(%d): ",
1.30 paf 257: origin.file, 1+origin.line);
1.28 paf 258: #endif
1.41 paf 259: printed+=snprintf(buf+printed, MAX_STRING-printed, "'%s' ",
1.30 paf 260: problem_source->cstr());
261: }
1.41 paf 262: printed+=snprintf(buf+printed, MAX_STRING-printed, "%s",
1.30 paf 263: e.comment());
264: const String *type=e.type();
265: if(type) {
1.41 paf 266: printed+=snprintf(buf+printed, MAX_STRING-printed, " type: %s",
1.30 paf 267: type->cstr());
268: const String *code=e.code();
269: if(code)
1.41 paf 270: printed+=snprintf(buf+printed, MAX_STRING-printed, ", code: %s",
1.30 paf 271: code->cstr());
272: }
1.43 paf 273:
274: // future $response:content-type
1.49 paf 275: response.fields().put(*content_type_name,
276: NEW VString(*NEW String(pool(), "text/plain")));
1.43 paf 277: // future $response:body
1.44 paf 278: body_string=NEW String(pool(), buf);
1.30 paf 279: }
1.41 paf 280:
1.45 paf 281: // ERROR. write it out
282: output_result(*body_string);
1.3 paf 283: }
1.30 paf 284: CATCH(e) {
1.41 paf 285: // exception in request exception handler
286: // remember to rethrow it
287: rethrow_me=e; need_rethrow=true;
1.1 paf 288: }
1.30 paf 289: END_CATCH
1.1 paf 290: }
1.41 paf 291: END_CATCH // do not use pool() after this point - no exception handler set
292: // any throw() would try to use zero exception() pointer
293:
294: if(need_rethrow) // there were an exception set for us to rethrow?
295: system_exception._throw(rethrow_me.type(), rethrow_me.code(),
296: rethrow_me.problem_source(),
297: rethrow_me.comment());
1.28 paf 298:
1.1 paf 299: }
300:
1.52 paf 301: /// \todo find|solve cyclic dependences
1.26 paf 302: VStateless_class *Request::use_file(
303: const char *file, bool fail_on_read_problem,
304: const String *name,
305: VStateless_class *base_class) {
1.5 paf 306: char *source=file_read(pool(), file, fail_on_read_problem);
1.3 paf 307: if(!source)
1.12 paf 308: return base_class;
1.3 paf 309:
1.25 paf 310: return use_buf(source, file, 0/*new class*/, name, base_class);
1.16 paf 311: }
312:
1.26 paf 313: VStateless_class *Request::use_buf(
314: const char *source, const char *file,
315: VStateless_class *aclass, const String *name,
316: VStateless_class *base_class) {
1.5 paf 317: // compile loaded class
1.26 paf 318: VStateless_class& cclass=COMPILE(source, aclass, name, base_class, file);
1.1 paf 319:
1.4 paf 320: // locate and execute possible @auto[] static method
1.25 paf 321: execute_method(cclass, *auto_method_name, false /*no result needed*/);
1.16 paf 322: return &cclass;
1.20 paf 323: }
324:
1.52 paf 325: /**
326: - fail_if_junction(true, junction = fail
327: - fail_if_junction(false, not junction = fail
328: */
1.20 paf 329: void Request::fail_if_junction_(bool is,
1.26 paf 330: Value& value, const String& method_name, char *msg) {
1.20 paf 331:
332: if((value.get_junction()!=0) ^ !is)
333: THROW(0, 0,
334: &method_name,
335: msg);
1.19 paf 336: }
337:
338: char *Request::relative(const char *path, const char *file) {
1.21 paf 339: char *result=(char *)malloc(strlen(path)+strlen(file)+1);
1.19 paf 340: strcpy(result, path);
1.32 paf 341: rsplit(result, PATH_DELIMITER_CHAR);
342: strcat(result, PATH_DELIMITER_STRING);
1.19 paf 343: strcat(result, file);
344: return result;
345: }
346:
347: char *Request::absolute(const char *name) {
348: if(name[0]=='/') {
1.35 paf 349: char *result=(char *)malloc(strlen(info.document_root)+strlen(name)+1);
350: strcpy(result, info.document_root);
1.19 paf 351: strcat(result, name);
352: return result;
353: } else
1.40 paf 354: return relative(info.uri, name);
1.1 paf 355: }
1.45 paf 356:
357: void Request::output_result(const String& body_string) {
1.51 paf 358: // header: cookies
359: cookie.output_result();
360:
1.49 paf 361: // set default content-type
1.51 paf 362: if(fdefault_content_type)
363: response.fields().put_dont_replace(*content_type_name, fdefault_content_type);
1.49 paf 364:
1.50 paf 365: // header: $response:fields without :body
1.45 paf 366: response.fields().foreach(output_response_attribute, /*excluding*/ body_name);
1.50 paf 367:
368: // prepare
1.45 paf 369: const char *body=body_string.cstr();
1.50 paf 370: size_t content_length=strlen(body);
371:
372: // header: content-length
373: char content_length_cstr[MAX_NUMBER];
374: snprintf(content_length_cstr, MAX_NUMBER, "%d", content_length);
375: (*service_funcs.output_header_attribute)("content-length", content_length_cstr);
376: // body
377: (*service_funcs.output_body)(body, content_length);
378: }
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