diff options
| -rw-r--r-- | apt-pkg/acquire-method.cc | 32 | ||||
| -rw-r--r-- | apt-pkg/acquire-method.h | 2 | ||||
| -rw-r--r-- | apt-pkg/acquire-worker.cc | 14 | ||||
| -rw-r--r-- | apt-pkg/makefile | 2 | ||||
| -rw-r--r-- | debian/changelog | 2 | ||||
| -rw-r--r-- | methods/http.cc | 78 | ||||
| -rw-r--r-- | methods/http.h | 3 | ||||
| -rw-r--r-- | methods/makefile | 2 |
8 files changed, 132 insertions, 3 deletions
diff --git a/apt-pkg/acquire-method.cc b/apt-pkg/acquire-method.cc index bc29417f7..acf1156dc 100644 --- a/apt-pkg/acquire-method.cc +++ b/apt-pkg/acquire-method.cc @@ -447,6 +447,38 @@ void pkgAcqMethod::Status(const char *Format,...) } /*}}}*/ +// AcqMethod::Redirect - Send a redirect message /*{{{*/ +// --------------------------------------------------------------------- +/* This method sends the redirect message and also manipulates the queue + to keep the pipeline synchronized. */ +void pkgAcqMethod::Redirect(const string &NewURI) +{ + string CurrentURI = "<UNKNOWN>"; + if (Queue != 0) + CurrentURI = Queue->Uri; + + char S[1024]; + snprintf(S, sizeof(S)-50, "103 Redirect\nURI: %s\nNew-URI: %s\n\n", + CurrentURI.c_str(), NewURI.c_str()); + + if (write(STDOUT_FILENO,S,strlen(S)) != (ssize_t)strlen(S)) + exit(100); + + // Change the URI for the request. + Queue->Uri = NewURI; + + /* To keep the pipeline synchronized, move the current request to + the end of the queue, past the end of the current pipeline. */ + FetchItem *I; + for (I = Queue; I->Next != 0; I = I->Next) ; + I->Next = Queue; + Queue = Queue->Next; + I->Next->Next = 0; + if (QueueBack == 0) + QueueBack = I->Next; +} + /*}}}*/ + // AcqMethod::FetchResult::FetchResult - Constructor /*{{{*/ // --------------------------------------------------------------------- /* */ diff --git a/apt-pkg/acquire-method.h b/apt-pkg/acquire-method.h index e02eab018..fab77e664 100644 --- a/apt-pkg/acquire-method.h +++ b/apt-pkg/acquire-method.h @@ -84,6 +84,8 @@ class pkgAcqMethod void Log(const char *Format,...); void Status(const char *Format,...); + void Redirect(const string &NewURI); + int Run(bool Single = false); inline void SetFailExtraMsg(string Msg) {FailExtra = Msg;}; diff --git a/apt-pkg/acquire-worker.cc b/apt-pkg/acquire-worker.cc index 1a754dae9..78c68737c 100644 --- a/apt-pkg/acquire-worker.cc +++ b/apt-pkg/acquire-worker.cc @@ -220,6 +220,20 @@ bool pkgAcquire::Worker::RunMessages() Status = LookupTag(Message,"Message"); break; + // 103 Redirect + case 103: + { + if (Itm == 0) + { + _error->Error("Method gave invalid 103 Redirect message"); + break; + } + + string NewURI = LookupTag(Message,"New-URI",URI.c_str()); + Itm->URI = NewURI; + break; + } + // 200 URI Start case 200: { diff --git a/apt-pkg/makefile b/apt-pkg/makefile index 1b78c94f6..087f17740 100644 --- a/apt-pkg/makefile +++ b/apt-pkg/makefile @@ -13,7 +13,7 @@ include ../buildlib/defaults.mak # methods/makefile - FIXME LIBRARY=apt-pkg LIBEXT=$(GLIBC_VER)$(LIBSTDCPP_VER) -MAJOR=4.6 +MAJOR=4.7 MINOR=0 SLIBS=$(PTHREADLIB) $(INTLLIBS) -lutil APT_DOMAIN:=libapt-pkg$(MAJOR) diff --git a/debian/changelog b/debian/changelog index fea9133ee..caef53baf 100644 --- a/debian/changelog +++ b/debian/changelog @@ -35,6 +35,8 @@ apt (0.7.21) UNRELEASED; urgency=low - make strings i18n able * apt-pkg/contrib/strutl.cc: - fix TimeToStr i18n (LP: #289807) + * [ABI break] merge support for http redirects, thanks to + Jeff Licquia and Anthony Towns [ Dereck Wonnacott ] * apt-ftparchive might write corrupt Release files (LP: #46439) diff --git a/methods/http.cc b/methods/http.cc index b3c791fa0..1bf798da4 100644 --- a/methods/http.cc +++ b/methods/http.cc @@ -39,6 +39,7 @@ #include <errno.h> #include <string.h> #include <iostream> +#include <map> #include <apti18n.h> // Internet stuff @@ -57,6 +58,7 @@ int HttpMethod::FailFd = -1; time_t HttpMethod::FailTime = 0; unsigned long PipelineDepth = 10; unsigned long TimeOut = 120; +bool AllowRedirect = false; bool Debug = false; URI Proxy; @@ -628,6 +630,12 @@ bool ServerState::HeaderLine(string Line) return true; } + if (stringcasecmp(Tag,"Location:") == 0) + { + Location = Val; + return true; + } + return true; } /*}}}*/ @@ -900,7 +908,9 @@ bool HttpMethod::ServerDie(ServerState *Srv) 1 - IMS hit 3 - Unrecoverable error 4 - Error with error content page - 5 - Unrecoverable non-server error (close the connection) */ + 5 - Unrecoverable non-server error (close the connection) + 6 - Try again with a new or changed URI + */ int HttpMethod::DealWithHeaders(FetchResult &Res,ServerState *Srv) { // Not Modified @@ -912,6 +922,27 @@ int HttpMethod::DealWithHeaders(FetchResult &Res,ServerState *Srv) return 1; } + /* Redirect + * + * Note that it is only OK for us to treat all redirection the same + * because we *always* use GET, not other HTTP methods. There are + * three redirection codes for which it is not appropriate that we + * redirect. Pass on those codes so the error handling kicks in. + */ + if (AllowRedirect + && (Srv->Result > 300 && Srv->Result < 400) + && (Srv->Result != 300 // Multiple Choices + && Srv->Result != 304 // Not Modified + && Srv->Result != 306)) // (Not part of HTTP/1.1, reserved) + { + if (!Srv->Location.empty()) + { + NextURI = Srv->Location; + return 6; + } + /* else pass through for error message */ + } + /* We have a reply we dont handle. This should indicate a perm server failure */ if (Srv->Result < 200 || Srv->Result >= 300) @@ -1026,6 +1057,7 @@ bool HttpMethod::Configuration(string Message) if (pkgAcqMethod::Configuration(Message) == false) return false; + AllowRedirect = _config->FindB("Acquire::http::AllowRedirect",true); TimeOut = _config->FindI("Acquire::http::Timeout",TimeOut); PipelineDepth = _config->FindI("Acquire::http::Pipeline-Depth", PipelineDepth); @@ -1039,6 +1071,10 @@ bool HttpMethod::Configuration(string Message) /* */ int HttpMethod::Loop() { + typedef vector<string> StringVector; + typedef vector<string>::iterator StringVectorIterator; + map<string, StringVector> Redirected; + signal(SIGTERM,SigTerm); signal(SIGINT,SigTerm); @@ -1225,6 +1261,46 @@ int HttpMethod::Loop() break; } + // Try again with a new URL + case 6: + { + // Clear rest of response if there is content + if (Server->HaveContent) + { + File = new FileFd("/dev/null",FileFd::WriteExists); + Server->RunData(); + delete File; + File = 0; + } + + /* Detect redirect loops. No more redirects are allowed + after the same URI is seen twice in a queue item. */ + StringVector &R = Redirected[Queue->DestFile]; + bool StopRedirects = false; + if (R.size() == 0) + R.push_back(Queue->Uri); + else if (R[0] == "STOP" || R.size() > 10) + StopRedirects = true; + else + { + for (StringVectorIterator I = R.begin(); I != R.end(); I++) + if (Queue->Uri == *I) + { + R[0] = "STOP"; + break; + } + + R.push_back(Queue->Uri); + } + + if (StopRedirects == false) + Redirect(NextURI); + else + Fail(); + + break; + } + default: Fail(_("Internal error")); break; diff --git a/methods/http.h b/methods/http.h index 6753a9901..13f02ec77 100644 --- a/methods/http.h +++ b/methods/http.h @@ -99,6 +99,7 @@ struct ServerState enum {Chunked,Stream,Closes} Encoding; enum {Header, Data} State; bool Persistent; + string Location; // This is a Persistent attribute of the server itself. bool Pipeline; @@ -143,6 +144,8 @@ class HttpMethod : public pkgAcqMethod static time_t FailTime; static void SigTerm(int); + string NextURI; + public: friend class ServerState; diff --git a/methods/makefile b/methods/makefile index d9481dbcc..78bdbc96f 100644 --- a/methods/makefile +++ b/methods/makefile @@ -7,7 +7,7 @@ include ../buildlib/defaults.mak BIN := $(BIN)/methods # FIXME.. -LIB_APT_PKG_MAJOR = 4.6 +LIB_APT_PKG_MAJOR = 4.7 APT_DOMAIN := libapt-pkg$(LIB_APT_PKG_MAJOR) # The file method |