SNAP Library 6.0, Developer Reference  2020-12-09 16:24:20
SNAP, a general purpose, high performance system for analysis and manipulation of large networks
http.cpp
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1 // Http-General
3 
4 // general strings
5 const TStr THttp::HttpStr="http";
6 const TStr THttp::SlashStr="/";
7 const TStr THttp::ColonStr=":";
8 
9 // fields names
10 const TStr THttp::ContTypeFldNm="Content-Type";
11 const TStr THttp::ContLenFldNm="Content-Length";
12 const TStr THttp::HostFldNm="Host";
13 const TStr THttp::AcceptRangesFldNm="Accept-Ranges";
14 const TStr THttp::CacheCtrlFldNm="Cache-Control";
15 const TStr THttp::AcceptFldNm="Accept";
16 const TStr THttp::SrvFldNm="Server";
17 const TStr THttp::ConnFldNm="Connection";
18 const TStr THttp::FetchIdFldNm="FetchId";
19 const TStr THttp::LocFldNm="Location";
20 const TStr THttp::SetCookieFldNm="Set-Cookie";
21 const TStr THttp::CookieFldNm="Cookie";
22 
23 // content-type field-values
24 const TStr THttp::TextFldVal="text/";
25 const TStr THttp::TextPlainFldVal="text/plain";
26 const TStr THttp::TextHtmlFldVal="text/html";
27 const TStr THttp::TextXmlFldVal="text/xml";
28 const TStr THttp::TextWmlFldVal="text/vnd.wap.wml";
29 const TStr THttp::TextJavaScriptFldVal="text/javascript";
30 const TStr THttp::TextCssFldVal="text/css";
31 const TStr THttp::ImageIcoFldVal="image/x-icon";
32 const TStr THttp::ImagePngFldVal="image/png";
33 const TStr THttp::ImageGifFldVal="image/gif";
34 const TStr THttp::ImageJpgFldVal="image/jpg";
35 const TStr THttp::AppOctetFldVal="application/octet-stream";
36 const TStr THttp::AppSoapXmlFldVal="application/soap+xml";
37 const TStr THttp::AppW3FormFldVal="application/x-www-form-urlencoded";
38 const TStr THttp::AppJSonFldVal = "application/json";
39 const TStr THttp::ConnKeepAliveFldVal="keep-alive";
40 
41 // file extensions
42 bool THttp::IsHtmlFExt(const TStr& FExt){
43  TStr UcFExt=FExt.GetUc();
44  return ((UcFExt==TFile::HtmlFExt.GetUc())||(UcFExt==TFile::HtmFExt.GetUc()));
45 }
46 
47 bool THttp::IsGifFExt(const TStr& FExt){
48  return (FExt.GetUc()==TFile::GifFExt.GetUc());
49 }
50 
51 // port number
52 const int THttp::DfPortN=80;
53 
54 // status codes
55 const int THttp::OkStatusCd=200;
56 const int THttp::RedirStatusCd=300;
57 const int THttp::BadRqStatusCd=400;
58 const int THttp::ErrStatusCd=400;
59 const int THttp::ErrNotFoundStatusCd=404;
60 const int THttp::InternalErrStatusCd=500;
61 
62 TStr THttp::GetReasonPhrase(const int& StatusCd){
63  switch (StatusCd){
64  case 200: return "OK";
65  case 201: return "Created";
66  case 202: return "Accepted";
67  case 204: return "No Content";
68  case 300: return "Multiple Choices";
69  case 301: return "Moved Permanently";
70  case 302: return "Moved Temporarily";
71  case 304: return "Not Modified";
72  case 400: return "Bad Request";
73  case 401: return "Unauthorized";
74  case 403: return "Forbidden";
75  case 404: return "Not Found";
76  case 500: return "Internal Server Error";
77  case 501: return "Not Implemented";
78  case 502: return "Bad Gateway";
79  case 503: return "Service Unavailable";
80  default: return TStr("Unknown Status Code ")+TInt::GetStr(StatusCd);
81  }
82 }
83 
84 // method names
85 const TStr THttp::GetMethodNm="GET";
86 const TStr THttp::HeadMethodNm="HEAD";
87 const TStr THttp::PostMethodNm="POST";
88 const TStr THttp::UndefMethodNm="UndefinedMethod";
89 
91 // Http-Chars
93 
94 class THttpChDef{
95 private:
98  void SetLcCh(const TStr& Str);
99  void SetChTy(const THttpChTy& ChTy, const char& Ch);
100  void SetChTy(const THttpChTy& ChTy, const TStr& Str);
101 public:
102  THttpChDef();
103 
104  THttpChDef& operator=(const THttpChDef&){Fail; return *this;}
105 
106  int GetChTy(const char& Ch){return ChTyV[Ch-TCh::Mn];}
107  bool IsAlpha(const char& Ch){return ChTyV[Ch-TCh::Mn]==int(hpctAlpha);}
108  bool IsDigit(const char& Ch){return ChTyV[Ch-TCh::Mn]==int(hpctDigit);}
109  bool IsCtl(const char& Ch){return ChTyV[Ch-TCh::Mn]==int(hpctCtl);}
110  bool IsLws(const char& Ch){
111  return (Ch==' ')||(Ch==TCh::TabCh)||(Ch==TCh::CrCh)||(Ch==TCh::LfCh);}
112  bool IsText(const char& Ch){return !IsCtl(Ch)||IsLws(Ch);}
113  bool IsSpec(const char& Ch){
114  return (ChTyV[Ch-TCh::Mn]==int(hpctSpec))||(Ch==9)||(Ch==32);}
115  bool IsCr(const char& Ch){return Ch==13;}
116  bool IsLf(const char& Ch){return Ch==10;}
117  bool IsSp(const char& Ch){return Ch==32;}
118  bool IsHt(const char& Ch){return Ch==9;}
119  bool IsDQuote(const char& Ch){return Ch=='"';}
120 
121  char GetLcCh(const char& Ch){return LcChV[Ch-TCh::Mn];}
122  TStr GetLcStr(const TStr& Str);
123 };
124 
125 void THttpChDef::SetChTy(const THttpChTy& ChTy, const char& Ch){
126  IAssert(ChTyV[Ch-TCh::Mn]==int(hpctUndef)); ChTyV[Ch-TCh::Mn]=TInt(ChTy);}
127 
128 void THttpChDef::SetChTy(const THttpChTy& ChTy, const TStr& Str){
129  for (int ChN=0; ChN<Str.Len(); ChN++){SetChTy(ChTy, Str[ChN]);}}
130 
131 void THttpChDef::SetLcCh(const TStr& Str){
132  for (int ChN=1; ChN<Str.Len(); ChN++){LcChV[Str[ChN]-TCh::Mn]=TCh(Str[0]);}}
133 
135  ChTyV(TCh::Vals), LcChV(TCh::Vals){
136 
137  // Character-Types
139  SetChTy(hpctAlpha, "ABCDEFGHIJKLMNOPQRSTUVWXYZ");
140  SetChTy(hpctAlpha, "abcdefghijklmnopqrstuvwxyz");
141  SetChTy(hpctDigit, "0123456789");
142  for (char Ch=0; Ch<=31; Ch++){SetChTy(hpctCtl, Ch);}
143  SetChTy(hpctCtl, 127);
144  SetChTy(hpctSpec, "()<>@,;:\\\"/[]?={}"); // +char(9)+char(32)
145 
146  // Lower-Case
147  {for (int Ch=TCh::Mn; Ch<=TCh::Mx; Ch++){LcChV[Ch-TCh::Mn]=TCh(char(Ch));}}
148  SetLcCh("aA"); SetLcCh("bB"); SetLcCh("cC"); SetLcCh("dD"); SetLcCh("eE");
149  SetLcCh("fF"); SetLcCh("gG"); SetLcCh("hH"); SetLcCh("iI"); SetLcCh("jJ");
150  SetLcCh("kK"); SetLcCh("lL"); SetLcCh("mM"); SetLcCh("nN"); SetLcCh("oO");
151  SetLcCh("pP"); SetLcCh("qQ"); SetLcCh("rR"); SetLcCh("sS"); SetLcCh("tT");
152  SetLcCh("uU"); SetLcCh("vV"); SetLcCh("wW"); SetLcCh("xX"); SetLcCh("yY");
153  SetLcCh("zZ");
154 }
155 
157  TChA LcStr;
158  for (int ChN=0; ChN<Str.Len(); ChN++){LcStr+=GetLcCh(Str[ChN]);}
159  return LcStr;
160 }
161 
163 // Http-Exception
164 typedef enum {
169 
170 class THttpEx{
171 private:
173 public:
174  THttpEx(const THttpExCd& _HttpExCd): HttpExCd(_HttpExCd){}
175 };
176 
178 // Http-Lexical
179 class THttpLx{
180 private:
183  //TChA ChStack;
185  char Ch;
186  bool AtEof;
188 public:
189  THttpLx(const PSIn& _SIn):
190  SIn(_SIn), EofChPrS(), Ch(' '), AtEof(false), SfMem(50000){
191  GetFirstCh();}
192 
193  THttpLx& operator=(const THttpLx&){Fail; return *this;}
194 
195  // basic
196  bool Eof(){return AtEof;}
197  int Len(){return EofChPrS.Len()+SIn->Len();}
198  char GetFirstCh();
199  char GetCh();
200  void GetRest();
201  void PutCh(const char& _Ch){
202  EofChPrS.Push(TBoolChPr(AtEof, Ch)); Ch=_Ch; AtEof=false; SfMem.Pop();}
203  void ClrMemSf(){SfMem.Clr();}
204  TMem& GetMemSf(){return SfMem;}
205 
206  // http request
208  PUrl GetUrl();
209  TStr GetUrlStr();
210  // http response
211  bool IsRespStatusLn();
213  // spacing
214  void GetWs();
215  bool IsLws();
216  void GetLws();
217  bool IsCrLf();
218  void GetCrLf();
219  // tokens
220  void GetPeriod();
221  TStr GetToken(const TStr& ExpectStr=TStr());
222  TStr GetSpec(const TStr& ExpectStr=TStr());
223  int GetInt(const int& RqPlaces=-1);
224  TStr GetFldVal();
225 
226  static TStr GetNrStr(const TStr& Str){return ChDef.GetLcStr(Str);}
227 };
229 
231  if (SIn->Eof()){
232  if (AtEof){throw THttpEx(heUnexpectedEof);}
233  AtEof=true; return 0;
234  } else {
235  Ch=SIn->GetCh(); return Ch;
236  }
237 }
238 
240  if (EofChPrS.Empty()){
241  if (SIn->Eof()){
242  if (AtEof){throw THttpEx(heUnexpectedEof);}
243  AtEof=true; SfMem+=Ch; Ch=TCh::NullCh; return Ch;
244  } else {
245  SfMem+=Ch; Ch=SIn->GetCh(); return Ch;
246  }
247  } else {
248  SfMem+=Ch;
249  AtEof=EofChPrS.Top().Val1; Ch=EofChPrS.Top().Val2; EofChPrS.Pop();
250  return Ch;
251  }
252 }
253 
255  while ((!SIn->Eof())&&(!EofChPrS.Empty())){GetCh();}
256  if (!SIn->Eof()){SfMem+=Ch;}
257  TMem RestMem; TMem::LoadMem(SIn, RestMem);
258  SfMem+=RestMem;
259 }
260 
262  TChA MethodNm;
263  while (!Eof() && ChDef.IsAlpha(Ch)){
264  MethodNm+=Ch; GetCh();}
265  THttpRqMethod Method=hrmUndef;
266  if (MethodNm==THttp::GetMethodNm){Method=hrmGet;}
267  else if (MethodNm==THttp::HeadMethodNm){Method=hrmHead;}
268  else if (MethodNm==THttp::PostMethodNm){Method=hrmPost;}
269  if (Method==hrmUndef){throw THttpEx(heMethodNmExpected);}
270  return Method;
271 }
272 
274  TChA UrlChA;
275  while ((!Eof())&&(!ChDef.IsSp(Ch))){
276  UrlChA+=Ch; GetCh();}
277  if (UrlChA.Empty()){
278  throw THttpEx(heUrlEmpty);}
279  static TStr LocalBaseUrlStr="http://localhost/";
280  PUrl Url=PUrl(new TUrl(UrlChA, LocalBaseUrlStr));
281  if (!Url->IsOk()){
282  throw THttpEx(heBadUrl);}
283  return Url;
284 }
285 
287  TChA UrlChA;
288  while ((!Eof())&&(!ChDef.IsSp(Ch))){
289  UrlChA+=Ch; GetCh();}
290  if (UrlChA.Empty()){
291  throw THttpEx(heUrlEmpty);}
292  return UrlChA;
293 }
294 
296  static const TChA MouldChA="http/N.N NNN ";
297  TChA TestChA(MouldChA);
298  int TestLen=TestChA.Len();
299  if (1+Len()<TestLen){return false;}
300  TestChA.PutCh(0, ChDef.GetLcCh(Ch));
301  {for (int ChN=1; ChN<TestLen; ChN++){
302  TestChA.PutCh(ChN, ChDef.GetLcCh(GetCh()));}}
303  {for (int ChN=1; ChN<TestLen; ChN++){
304  PutCh(TestChA[TestLen-ChN-1]);}}
305  {for (int ChN=0; ChN<MouldChA.Len(); ChN++){
306  if (MouldChA[ChN]=='N'){
307  if (!ChDef.IsDigit(TestChA[ChN])){return false;}
308  } else {
309  if (MouldChA[ChN]!=TestChA[ChN]){return false;}
310  }
311  }}
312  return true;
313 }
314 
316  GetLws();
317  TChA RPStr;
318  while (!Eof()&&ChDef.IsText(Ch)&&(Ch!=TCh::CrCh)&&(Ch!=TCh::LfCh)){
319  RPStr+=Ch; GetCh();}
320  return RPStr;
321 }
322 
324  while (!Eof()&&((Ch==' ')||(Ch==TCh::TabCh))){GetCh();}
325 }
326 
328  if ((Ch==' ')||(Ch==TCh::TabCh)){
329  return true;
330  } else
331  if (Ch==TCh::CrCh){
332  GetCh();
333  if (Ch==TCh::LfCh){
334  GetCh(); bool Ok=(Ch==' ')||(Ch==TCh::TabCh);
335  PutCh(TCh::LfCh); PutCh(TCh::CrCh); return Ok;
336  } else {
337  PutCh(TCh::CrCh); return false;
338  }
339  } else
340  if (Ch==TCh::LfCh){
341  GetCh(); bool Ok=(Ch==' ')||(Ch==TCh::TabCh);
342  PutCh(TCh::LfCh); return Ok;
343  } else {
344  return false;
345  }
346 }
347 
349  forever {
350  while ((Ch==' ')||(Ch==TCh::TabCh)){GetCh();}
351  if (Ch==TCh::CrCh){
352  GetCh();
353  if (Ch==TCh::LfCh){
354  GetCh();
355  if ((Ch==' ')||(Ch==TCh::TabCh)){GetCh();}
356  else {PutCh(TCh::LfCh); PutCh(TCh::CrCh); break;}
357  } else {
358  PutCh(TCh::CrCh); break;
359  }
360  } else
361  if (Ch==TCh::LfCh){
362  GetCh();
363  if ((Ch==' ')||(Ch==TCh::TabCh)){GetCh();}
364  else {PutCh(TCh::LfCh); break;}
365  } else {
366  break;
367  }
368  }
369 }
370 
372  if (Ch==TCh::CrCh){
373  GetCh(); bool Ok=(Ch==TCh::LfCh); PutCh(TCh::CrCh); return Ok;
374  } else
375  if (Ch==TCh::LfCh){
376  return true;
377  } else {
378  return false;
379  }
380 }
381 
383  if (Ch==TCh::CrCh){
384  GetCh();
385  if (Ch==TCh::LfCh){GetCh();} else {throw THttpEx(heCrLfExpected);}
386  } else
387  if (Ch==TCh::LfCh){
388  GetCh();
389  } else {
390  throw THttpEx(heCrLfExpected);
391  }
392 }
393 
395  GetWs();
396  if (Ch!='.'){throw THttpEx(hePeriodExpected);}
397  GetCh();
398 }
399 
400 TStr THttpLx::GetToken(const TStr& ExpectStr){
401  GetLws();
402  TChA TokenStr;
403  while (!Eof() && !ChDef.IsCtl(Ch) && !ChDef.IsSpec(Ch)){
404  TokenStr+=Ch; GetCh();}
405  if (TokenStr.Empty()){throw THttpEx(heTokenExpected);}
406  if (!ExpectStr.Empty()){
407  if (GetNrStr(ExpectStr)!=GetNrStr(TokenStr)){
408  throw THttpEx(heInvalidToken);}
409  }
410  return TokenStr;
411 }
412 
413 TStr THttpLx::GetSpec(const TStr& ExpectStr){
414  GetLws();
415  if (!ChDef.IsSpec(Ch)){throw THttpEx(heTSpecExpected);}
416  TStr SpecStr(Ch); GetCh();
417  if (!ExpectStr.Empty()){
418  if (ExpectStr!=SpecStr){throw THttpEx(heInvalidTSpec);}}
419  return SpecStr;
420 }
421 
422 int THttpLx::GetInt(const int& RqPlaces){
423  GetLws();
424  if (!ChDef.IsDigit(Ch)){throw THttpEx(heNumExpected);}
425  int Int=0; int CurPlaces=0;
426  do {Int=Int*10+Ch-'0'; CurPlaces++; GetCh();
427  } while ((CurPlaces<RqPlaces)&&(ChDef.IsDigit(Ch)));
428  if (RqPlaces!=-1){
429  if (CurPlaces!=RqPlaces){throw THttpEx(heInvalidNumPlaces);}}
430  return Int;
431 }
432 
434  TChA FldValStr;
435  do {
436  GetLws();
437  while (!Eof()&&ChDef.IsText(Ch)&&(Ch!=TCh::CrCh)&&(Ch!=TCh::LfCh)){
438  FldValStr+=Ch; GetCh();}
439  if (IsLws()){FldValStr+=' ';}
440  } while (IsLws());
441  return FldValStr;
442 }
443 
445 // Http-Character-Returner
448  int Chs, ChN;
450 public:
451  THttpChRet(const PSIn& _SIn, const THttpExCd& _HttpExCd):
452  SIn(_SIn), Chs(SIn->Len()), ChN(0), HttpExCd(_HttpExCd){}
453  THttpChRet& operator=(const THttpChRet&){Fail; return *this;}
454  bool Eof(){return ChN==Chs;}
455  char GetCh(){
456  if (ChN>=Chs){throw THttpEx(HttpExCd);}
457  ChN++; return SIn->GetCh();}
458 };
459 
461 // Http-Request
462 void THttpRq::ParseSearch(const TStr& SearchStr){
463  PSIn SIn=TStrIn::New(SearchStr);
464  THttpChRet ChRet(SIn, heBadSearchStr);
465  try {
466  // check empty search string
467  if (ChRet.Eof()){return;}
468  // require '?' at the beginning
469  if (ChRet.GetCh()!='?'){
470  throw THttpEx(heBadSearchStr);}
471  // parse key=val{&...} pairs
472  TChA KeyNm; TChA ValStr;
473  while (!ChRet.Eof()){
474  char Ch; KeyNm.Clr(); ValStr.Clr();
475  // key
476  while ((Ch=ChRet.GetCh())!='='){
477  switch (Ch){
478  case '%':{
479  char Ch1=ChRet.GetCh();
480  if (!TCh::IsHex(Ch1)) { throw THttpEx(heBadSearchStr); }
481  char Ch2=ChRet.GetCh();
482  if (!TCh::IsHex(Ch2)) { throw THttpEx(heBadSearchStr); }
483  KeyNm.AddCh(char(16*TCh::GetHex(Ch1)+TCh::GetHex(Ch2)));} break;
484  case '+': KeyNm.AddCh(' '); break;
485  case '&': throw THttpEx(heBadSearchStr);
486  default: KeyNm.AddCh(Ch);
487  }
488  }
489  // equals
490  if (Ch!='='){
491  throw THttpEx(heBadSearchStr);}
492  // value
493  while ((!ChRet.Eof())&&((Ch=ChRet.GetCh())!='&')){
494  switch (Ch){
495  case '%':{
496  char Ch1=ChRet.GetCh();
497  if (!TCh::IsHex(Ch1)) { throw THttpEx(heBadSearchStr); }
498  char Ch2=ChRet.GetCh();
499  if (!TCh::IsHex(Ch2)) { throw THttpEx(heBadSearchStr); }
500  ValStr.AddCh(char(16*TCh::GetHex(Ch1)+TCh::GetHex(Ch2)));} break;
501  case '+': ValStr.AddCh(' '); break;
502  case '&': throw THttpEx(heBadSearchStr);
503  default: ValStr.AddCh(Ch);
504  }
505  }
506  // save key-value pair
507  UrlEnv->AddToKeyVal(KeyNm, ValStr);
508  }
509  }
510  catch (const THttpEx&){Ok=false;}
511 }
512 
513 void THttpRq::ParseHttpRq(const PSIn& SIn){
514  THttpLx Lx(SIn);
515  // initial status
516  Ok=false;
517  CompleteP=false;
518  // request-line
519  Method=Lx.GetRqMethod();
520  Lx.GetWs();
521  //Url=Lx.GetUrl();
522  TStr UrlStr=Lx.GetUrlStr();
523  Lx.GetWs();
524  Lx.GetToken(THttp::HttpStr); Lx.GetSpec(THttp::SlashStr);
525  MajorVerN=Lx.GetInt(1); Lx.GetPeriod(); MinorVerN=Lx.GetInt(1);
526  Lx.GetCrLf();
527  // header fields & values
528  while ((!Lx.Eof())&&(!Lx.IsCrLf())){
529  TStr FldNm=Lx.GetToken(); Lx.GetSpec(THttp::ColonStr);
530  TStr FldVal=Lx.GetFldVal();
531  Lx.GetCrLf();
532  TStr NrFldNm=THttpLx::GetNrStr(FldNm);
533  FldNmToValH.AddDat(NrFldNm, FldVal);
534  }
535  // separator CrLf
536  if (!Lx.IsCrLf()){return;} // to avoid exceptions
537  Lx.GetCrLf();
538  // header & body strings
539  HdStr=Lx.GetMemSf().GetAsStr();
540  Lx.ClrMemSf();
541  Lx.GetRest();
542  BodyMem=Lx.GetMemSf();
543  // completeness
544  int ContLen=GetFldVal(THttp::ContLenFldNm).GetInt(-1);
545  if (ContLen==-1){
546  // if not content-len is given we assume http-request is ok
547  CompleteP=true;
548  } else {
549  if (ContLen<=BodyMem.Len()){
550  // if we read enough data, we claim completeness
551  CompleteP=true;
552  BodyMem.Trunc(ContLen);
553  } else {
554  // if we read not enough data we claim incompleteness
555  CompleteP=false;
556  }
557  }
558  // url
559  if (CompleteP){
560  const TStr LocalBaseUrlStr="http://localhost/";
561  Url=TUrl::New(UrlStr, LocalBaseUrlStr);
562  if (!Url->IsOk()){
563  throw THttpEx(heBadUrl);}
564  }
565  // search string
566  TStr SearchStr;
567  if (Method==hrmGet){
568  SearchStr=Url->GetSearchStr();
569  } else
570  if ((Method==hrmPost)&&(
571  (!IsFldNm(THttp::ContTypeFldNm))||
572  (GetFldVal(THttp::ContTypeFldNm)==THttp::TextHtmlFldVal)||
573  (GetFldVal(THttp::ContTypeFldNm)==THttp::AppW3FormFldVal))){
574  SearchStr=TStr("?")+BodyMem.GetAsStr();
575  }
576  ParseSearch(SearchStr);
577  // at this point ok=true
578  Ok=true;
579 }
580 
581 THttpRq::THttpRq(const PSIn& SIn):
582  Ok(false), MajorVerN(0), MinorVerN(0), Method(hrmUndef),
583  FldNmToValH(), UrlEnv(TUrlEnv::New()),
584  HdStr(), BodyMem(){
585  try {
586  ParseHttpRq(SIn);
587  }
588  catch (const THttpEx&){Ok=false;}
589 }
590 
592  const THttpRqMethod& _Method, const PUrl& _Url,
593  const TStr& ContTypeFldVal, const TMem& _BodyMem, const int& FetchId):
594  Ok(false),
595  MajorVerN(1), MinorVerN(0),
596  Method(_Method),
597  Url(_Url),
598  FldNmToValH(),
599  UrlEnv(TUrlEnv::New()),
600  HdStr(), BodyMem(_BodyMem){
601  // compose head-http-request
602  TChA HdChA;
603  if (Url->IsOk()){
604  TStr AbsPath=Url->GetPathStr()+Url->GetSearchStr();
605  HdChA+=GetMethodNm(); HdChA+=' '; HdChA+=AbsPath; HdChA+=" HTTP/1.0\r\n";
606  }
607  // add content-type
608  if (!ContTypeFldVal.Empty()){
609  FldNmToValH.AddDat(THttpLx::GetNrStr(THttp::ContTypeFldNm), ContTypeFldVal);
610  HdChA+=THttpLx::GetNrStr(THttp::ContTypeFldNm); HdChA+=": ";
611  HdChA+=ContTypeFldVal; HdChA+="\r\n";
612  }
613  // add host
614  if (Url->IsOk()){
615  TStr HostNm=Url->GetHostNm();
616  FldNmToValH.AddDat(THttpLx::GetNrStr(THttp::HostFldNm), HostNm);
617  HdChA+=THttpLx::GetNrStr(THttp::HostFldNm); HdChA+=": ";
618  HdChA+=HostNm; HdChA+="\r\n";
620  }
621  // add fetch-id
622  if (Url->IsOk()&&(FetchId!=-1)){
623  TStr FetchIdStr=TInt::GetStr(FetchId);
624  FldNmToValH.AddDat(THttpLx::GetNrStr(THttp::FetchIdFldNm), FetchIdStr);
625  HdChA+=THttpLx::GetNrStr(THttp::FetchIdFldNm); HdChA+=": ";
626  HdChA+=FetchIdStr; HdChA+="\r\n";
627  }
628  // finish head-http-request
629  if (Url->IsOk()){
630  HdChA+="\r\n";
631  HdStr=HdChA;
632  }
633  // set http-request ok
634  Ok=true;
635 }
636 
637 const TStr& THttpRq::GetMethodNm() const {
638  switch (Method){
639  case hrmGet: return THttp::GetMethodNm;
640  case hrmHead: return THttp::HeadMethodNm;
641  case hrmPost: return THttp::PostMethodNm;
642  default: return THttp::UndefMethodNm;
643  }
644 }
645 
646 bool THttpRq::IsFldNm(const TStr& FldNm) const {
647  return FldNmToValH.IsKey(THttpLx::GetNrStr(FldNm));
648 }
649 
650 TStr THttpRq::GetFldVal(const TStr& FldNm) const {
651  TStr NrFldNm=THttpLx::GetNrStr(FldNm);
652  if (FldNmToValH.IsKey(NrFldNm)){
653  return FldNmToValH.GetDat(NrFldNm);
654  } else {
655  return TStr();
656  }
657 }
658 
659 bool THttpRq::IsFldVal(const TStr& FldNm, const TStr& FldVal) const {
660  return THttpLx::GetNrStr(FldVal)==THttpLx::GetNrStr(GetFldVal(FldNm));
661 }
662 
663 
664 void THttpRq::AddFldVal(const TStr& FldNm, const TStr& FldVal){
665  TStr NrFldNm=THttpLx::GetNrStr(FldNm);
666  FldNmToValH.AddDat(NrFldNm, FldVal);
667 }
668 
670  return FldNmToValH;
671 }
672 
674  TChA ChA;
675  ChA+=GetMethodNm(); ChA+=' ';
676  ChA+=Url->GetUrlStr(); ChA+=' ';
677  ChA+="HTTP/1.0\r\n";
678  for (int FldN=0; FldN<FldNmToValH.Len(); FldN++){
679  ChA+=FldNmToValH.GetKey(FldN); ChA+=": ";
680  ChA+=FldNmToValH[FldN]; ChA+="\r\n";
681  }
682  if (!BodyMem.Empty()) {
683  ChA+=THttp::ContLenFldNm; ChA+=": ";
684  ChA+=TInt::GetStr(BodyMem.Len()); ChA+="\r\n";
685  }
686  ChA+="\r\n";
687  ChA+=BodyMem.GetAsStr();
688  return ChA;
689 }
690 
692 // Http-Response
693 void THttpResp::AddHdFld(const TStr& FldNm, const TStr& FldVal, TChA& HdChA){
694  TStr NrFldNm=THttpLx::GetNrStr(FldNm);
695  FldNmToValVH.AddDat(NrFldNm).Add(FldVal);
696  HdChA+=FldNm; HdChA+=": "; HdChA+=FldVal; HdChA+="\r\n";
697 }
698 
700  THttpLx Lx(SIn);
701  if (Lx.Eof()){
702  // no content
703  MajorVerN=0; MinorVerN=9; StatusCd=204;
704  HdStr.Clr(); BodyMem.Clr();
705  } else {
706  if (Lx.IsRespStatusLn()){
707  // status-line
708  Lx.GetToken(THttp::HttpStr); Lx.GetSpec(THttp::SlashStr);
709  MajorVerN=Lx.GetInt(1); Lx.GetPeriod(); MinorVerN=Lx.GetInt(1);
710  StatusCd=Lx.GetInt(3);
712  Lx.GetCrLf();
713  // header fields & values
714  while (!Lx.IsCrLf()){
715  TStr FldNm=Lx.GetToken(); Lx.GetSpec(THttp::ColonStr);
716  TStr FldVal=Lx.GetFldVal();
717  Lx.GetCrLf();
718  TStr NrFldNm=THttpLx::GetNrStr(FldNm);
719  FldNmToValVH.AddDat(NrFldNm).Add(FldVal);
720  }
721  // separator CrLf
722  Lx.GetCrLf();
723  // header & body strings
724  HdStr=Lx.GetMemSf().GetAsStr();
725  Lx.ClrMemSf();
726  Lx.GetRest();
727  BodyMem=Lx.GetMemSf();
728  } else {
729  // old fashion format
730  MajorVerN=0; MinorVerN=9; StatusCd=200;
731  HdStr.Clr();
732  Lx.ClrMemSf();
733  Lx.GetRest();
734  BodyMem=Lx.GetMemSf();
735  }
736  }
737  Ok=true;
738 }
739 
740 THttpResp::THttpResp(const int& _StatusCd, const TStr& ContTypeVal,
741  const bool& CacheCtrlP, const PSIn& BodySIn, const TStr LocStr):
742  Ok(true), MajorVerN(1), MinorVerN(0), StatusCd(_StatusCd), ReasonPhrase(),
743  FldNmToValVH(20), HdStr(), BodyMem(){
745  TChA HdChA;
746  // first line
747  HdChA+="HTTP/"; HdChA+=TInt::GetStr(MajorVerN); HdChA+=".";
748  HdChA+=TInt::GetStr(MinorVerN); HdChA+=' ';
749  HdChA+=TInt::GetStr(StatusCd); HdChA+=' ';
750  HdChA+=ReasonPhrase;
751  HdChA+="\r\n";
752  // header fields
753  // server
754  //AddHdFld(THttp::SrvFldNm, "Tralala", HdChA);
755  if (!LocStr.Empty()){
756  AddHdFld("Location", LocStr, HdChA);}
757  if (!BodySIn.Empty()){
758  // content-type
759  AddHdFld(THttp::ContTypeFldNm, ContTypeVal, HdChA);
760  // accept-ranges
761  AddHdFld(THttp::AcceptRangesFldNm, "bytes", HdChA);
762  // content-length
763  TStr ContLenVal=TInt::GetStr(BodySIn->Len());
764  AddHdFld(THttp::ContLenFldNm, ContLenVal, HdChA);
765  // cache-control
766  if (!CacheCtrlP){
767  AddHdFld(THttp::CacheCtrlFldNm, "no-cache", HdChA);}
768  }
769  // header/body separator
770  HdChA+="\r\n";
771  // header/body data
772  HdStr=HdChA;
773  if (!BodySIn.Empty()){
774  TMem::LoadMem(BodySIn, BodyMem);}
775 }
776 
778  Ok(false), MajorVerN(0), MinorVerN(0), StatusCd(-1), ReasonPhrase(),
779  FldNmToValVH(20), HdStr(), BodyMem(){
780  try {
781  ParseHttpResp(SIn);
782  }
783  catch (const THttpEx&){Ok=false;}
784 }
785 
786 bool THttpResp::IsFldNm(const TStr& FldNm) const {
787  return FldNmToValVH.IsKey(THttpLx::GetNrStr(FldNm));
788 }
789 
790 TStr THttpResp::GetFldVal(const TStr& FldNm, const int& ValN) const {
791  TStr NrFldNm=THttpLx::GetNrStr(FldNm);
792  if (FldNmToValVH.IsKey(NrFldNm)){
793  const TStrV& ValV=FldNmToValVH.GetDat(NrFldNm);
794  if (ValV.Len()>0){return ValV[ValN];} else {return TStr();}
795  } else {
796  return TStr();
797  }
798 }
799 
800 void THttpResp::GetFldValV(const TStr& FldNm, TStrV& FldValV) const {
801  TStr NrFldNm=THttpLx::GetNrStr(FldNm);
802  if (FldNmToValVH.IsKey(NrFldNm)){
803  FldValV=FldNmToValVH.GetDat(NrFldNm);
804  } else {
805  FldValV.Clr();
806  }
807 }
808 
809 bool THttpResp::IsFldVal(const TStr& FldNm, const TStr& FldVal) const {
810  return THttpLx::GetNrStr(FldVal)==THttpLx::GetNrStr(GetFldVal(FldNm));
811 }
812 
813 void THttpResp::AddFldVal(const TStr& FldNm, const TStr& FldVal){
814  TStr NrFldNm=THttpLx::GetNrStr(FldNm);
815  FldNmToValVH.AddDat(NrFldNm).Add(FldVal);
816  if (HdStr.IsSuffix("\r\n\r\n")){
817  TChA HdChA=HdStr;
818  HdChA.Pop(); HdChA.Pop();
819  HdChA+=NrFldNm; HdChA+=": "; HdChA+=FldVal;
820  HdChA+="\r\n\r\n";
821  HdStr=HdChA;
822  }
823 }
824 
825 void THttpResp::GetCookieKeyValDmPathQuV(TStrQuV& CookieKeyValDmPathQuV){
826  CookieKeyValDmPathQuV.Clr();
827  TStrV CookieFldValV; GetFldValV(THttp::SetCookieFldNm, CookieFldValV);
828  for (int CookieN=0; CookieN<CookieFldValV.Len(); CookieN++){
829  TStr CookieFldVal=CookieFldValV[CookieN];
830  TStrV KeyValStrV;
831  CookieFldVal.SplitOnAllCh(';', KeyValStrV, true);
832  TStrPrV KeyValPrV; TStr DmNm; TStr PathStr;
833  for (int KeyValStrN=0; KeyValStrN<KeyValStrV.Len(); KeyValStrN++){
834  TStr KeyValStr=KeyValStrV[KeyValStrN];
835  TStr KeyNm; TStr ValStr;
836  if (KeyValStr.IsChIn('=')){
837  KeyValStrV[KeyValStrN].SplitOnCh(KeyNm, '=', ValStr);
838  KeyNm.ToTrunc(); ValStr.ToTrunc();
839  } else {
840  KeyNm=KeyValStr.GetTrunc();
841  }
842  if (KeyNm=="expires"){}
843  else if (KeyNm=="domain"){DmNm=ValStr;}
844  else if (KeyNm=="path"){PathStr=ValStr;}
845  else if (KeyNm=="expires"){}
846  else if (KeyNm=="secure"){}
847  else if (KeyNm=="httponly"){}
848  else if (!KeyNm.Empty()){
849  KeyValPrV.Add(TStrPr(KeyNm, ValStr));
850  }
851  }
852  for (int KeyValPrN=0; KeyValPrN<KeyValPrV.Len(); KeyValPrN++){
853  TStr KeyNm=KeyValPrV[KeyValPrN].Val1;
854  TStr ValStr=KeyValPrV[KeyValPrN].Val2;
855  CookieKeyValDmPathQuV.Add(TStrQu(KeyNm, ValStr, DmNm, PathStr));
856  }
857  }
858 }
859 
861  TMOut MOut(HdStr.Len()+BodyMem.Len());
862  MOut.PutStr(HdStr); MOut.PutMem(BodyMem);
863  return MOut.GetSIn();
864 }
865 
#define IAssert(Cond)
Definition: bd.h:262
TQuad< TStr, TStr, TStr, TStr > TStrQu
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Returns the number of elements in the vector.
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int Len()
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THttpChDef()
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Clears the contents of the vector.
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Sets all elements of the vector to value Val.
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TVal2 Val2
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static const TStr ImagePngFldVal
Definition: http.h:33
void SetChTy(const THttpChTy &ChTy, const char &Ch)
Definition: http.cpp:125
char Pop()
Definition: dt.h:265
bool IsKey(const TKey &Key) const
Definition: hash.h:258
bool IsSpec(const char &Ch)
Definition: http.cpp:113
TSizeTy Add()
Adds a new element at the end of the vector, after its current last element.
Definition: ds.h:602
bool IsFldVal(const TStr &FldNm, const TStr &FldVal) const
Definition: http.cpp:809
static const TStr SrvFldNm
Definition: http.h:18
THttpLx(const PSIn &_SIn)
Definition: http.cpp:189
int GetInt(const int &RqPlaces=-1)
Definition: http.cpp:422
int Len() const
Definition: hash.h:228
static const TStr ImageJpgFldVal
Definition: http.h:35
bool IsCrLf()
Definition: http.cpp:371
void PutCh(const char &_Ch)
Definition: http.cpp:201
TDat & AddDat(const TKey &Key)
Definition: hash.h:238
THttpExCd
Definition: http.cpp:164
bool IsHt(const char &Ch)
Definition: http.cpp:118
bool AtEof
Definition: http.cpp:186
const TKey & GetKey(const int &KeyId) const
Definition: hash.h:252
const TStr & GetMethodNm() const
Definition: http.cpp:637
static const TStr AppSoapXmlFldVal
Definition: http.h:37
THttpExCd HttpExCd
Definition: http.cpp:172
void Clr(const bool &DoDel=true)
Definition: dt.h:131
static const TStr SetCookieFldNm
Definition: http.h:22