// -*- mode: cpp; mode: fold -*-
// Description /*{{{*/
-// $Id: acquire-method.cc,v 1.1 1998/10/30 07:53:35 jgg Exp $
+// $Id: acquire-method.cc,v 1.27.2.1 2003/12/24 23:09:17 mdz Exp $
/* ######################################################################
Acquire Method
+ This is a skeleton class that implements most of the functionality
+ of a method and some useful functions to make method implementation
+ simpler. The methods all derive this and specialize it. The most
+ complex implementation is the http method which needs to provide
+ pipelining, it runs the message engine at the same time it is
+ downloading files..
+
##################################################################### */
/*}}}*/
// Include Files /*{{{*/
-#ifdef __GNUG__
-#pragma implementation "apt-pkg/acquire-method.h"
-#endif
#include <apt-pkg/acquire-method.h>
#include <apt-pkg/error.h>
#include <apt-pkg/configuration.h>
-#include <strutl.h>
+#include <apt-pkg/strutl.h>
#include <apt-pkg/fileutl.h>
+#include <apt-pkg/hashes.h>
+#include <iostream>
+#include <stdarg.h>
#include <stdio.h>
+#include <unistd.h>
+#include <sys/signal.h>
/*}}}*/
+using namespace std;
+
// AcqMethod::pkgAcqMethod - Constructor /*{{{*/
// ---------------------------------------------------------------------
/* This constructs the initialization text */
if ((Flags & SingleInstance) == SingleInstance)
strcat(End,"Single-Instance: true\n");
- if ((Flags & PreScan) == PreScan)
- strcat(End,"Pre-Scan: true\n");
-
if ((Flags & Pipeline) == Pipeline)
strcat(End,"Pipeline: true\n");
if ((Flags & SendConfig) == SendConfig)
strcat(End,"Send-Config: true\n");
+
+ if ((Flags & LocalOnly) == LocalOnly)
+ strcat(End,"Local-Only: true\n");
+
+ if ((Flags & NeedsCleanup) == NeedsCleanup)
+ strcat(End,"Needs-Cleanup: true\n");
+
+ if ((Flags & Removable) == Removable)
+ strcat(End,"Removable: true\n");
strcat(End,"\n");
if (write(STDOUT_FILENO,S,strlen(S)) != (signed)strlen(S))
exit(100);
+
+ SetNonBlock(STDIN_FILENO,true);
+
+ Queue = 0;
+ QueueBack = 0;
}
/*}}}*/
// AcqMethod::Fail - A fetch has failed /*{{{*/
// ---------------------------------------------------------------------
/* */
-void pkgAcqMethod::Fail()
+void pkgAcqMethod::Fail(bool Transient)
{
string Err = "Undetermined Error";
if (_error->empty() == false)
_error->PopMessage(Err);
_error->Discard();
- Fail(Err);
+ Fail(Err,Transient);
}
/*}}}*/
// AcqMethod::Fail - A fetch has failed /*{{{*/
// ---------------------------------------------------------------------
/* */
-void pkgAcqMethod::Fail(string Err)
-{
+void pkgAcqMethod::Fail(string Err,bool Transient)
+{
+ // Strip out junk from the error messages
+ for (string::iterator I = Err.begin(); I != Err.end(); I++)
+ {
+ if (*I == '\r')
+ *I = ' ';
+ if (*I == '\n')
+ *I = ' ';
+ }
+
char S[1024];
- snprintf(S,sizeof(S),"400 URI Failure\nURI: %s\n"
- "Message %s\n\n",CurrentURI.c_str(),Err.c_str());
+ if (Queue != 0)
+ {
+ snprintf(S,sizeof(S)-50,"400 URI Failure\nURI: %s\n"
+ "Message: %s %s\n",Queue->Uri.c_str(),Err.c_str(),
+ FailExtra.c_str());
+ // Dequeue
+ FetchItem *Tmp = Queue;
+ Queue = Queue->Next;
+ delete Tmp;
+ if (Tmp == QueueBack)
+ QueueBack = Queue;
+ }
+ else
+ snprintf(S,sizeof(S)-50,"400 URI Failure\nURI: <UNKNOWN>\n"
+ "Message: %s %s\n",Err.c_str(),
+ FailExtra.c_str());
+
+ // Set the transient flag
+ if (Transient == true)
+ strcat(S,"Transient-Failure: true\n\n");
+ else
+ strcat(S,"\n");
+
if (write(STDOUT_FILENO,S,strlen(S)) != (signed)strlen(S))
exit(100);
}
// AcqMethod::URIStart - Indicate a download is starting /*{{{*/
// ---------------------------------------------------------------------
/* */
-void pkgAcqMethod::URIStart(FetchResult &Res,unsigned long Resume = 0)
+void pkgAcqMethod::URIStart(FetchResult &Res)
{
+ if (Queue == 0)
+ abort();
+
char S[1024] = "";
char *End = S;
- End += snprintf(S,sizeof(S),"200 URI Start\nURI: %s\n",CurrentURI.c_str());
+ End += snprintf(S,sizeof(S),"200 URI Start\nURI: %s\n",Queue->Uri.c_str());
if (Res.Size != 0)
- End += snprintf(End,sizeof(S) - (End - S),"Size: %u\n",Res.Size);
+ End += snprintf(End,sizeof(S)-4 - (End - S),"Size: %lu\n",Res.Size);
if (Res.LastModified != 0)
- End += snprintf(End,sizeof(S) - (End - S),"Last-Modified: %s\n",
+ End += snprintf(End,sizeof(S)-4 - (End - S),"Last-Modified: %s\n",
TimeRFC1123(Res.LastModified).c_str());
- if (Resume != 0)
- End += snprintf(End,sizeof(S) - (End - S),"Resume-Point: %u\n",
- Resume);
+ if (Res.ResumePoint != 0)
+ End += snprintf(End,sizeof(S)-4 - (End - S),"Resume-Point: %lu\n",
+ Res.ResumePoint);
strcat(End,"\n");
if (write(STDOUT_FILENO,S,strlen(S)) != (signed)strlen(S))
/* */
void pkgAcqMethod::URIDone(FetchResult &Res, FetchResult *Alt)
{
+ if (Queue == 0)
+ abort();
+
char S[1024] = "";
char *End = S;
- End += snprintf(S,sizeof(S),"201 URI Done\nURI: %s\n",CurrentURI.c_str());
+ End += snprintf(S,sizeof(S),"201 URI Done\nURI: %s\n",Queue->Uri.c_str());
if (Res.Filename.empty() == false)
- End += snprintf(End,sizeof(S) - (End - S),"Filename: %s\n",Res.Filename.c_str());
+ End += snprintf(End,sizeof(S)-50 - (End - S),"Filename: %s\n",Res.Filename.c_str());
if (Res.Size != 0)
- End += snprintf(End,sizeof(S) - (End - S),"Size: %u\n",Res.Size);
+ End += snprintf(End,sizeof(S)-50 - (End - S),"Size: %lu\n",Res.Size);
if (Res.LastModified != 0)
- End += snprintf(End,sizeof(S) - (End - S),"Last-Modified: %s\n",
+ End += snprintf(End,sizeof(S)-50 - (End - S),"Last-Modified: %s\n",
TimeRFC1123(Res.LastModified).c_str());
if (Res.MD5Sum.empty() == false)
- End += snprintf(End,sizeof(S) - (End - S),"MD5Sum: %s\n",Res.MD5Sum.c_str());
+ {
+ End += snprintf(End,sizeof(S)-50 - (End - S),"MD5-Hash: %s\n",Res.MD5Sum.c_str());
+ End += snprintf(End,sizeof(S)-50 - (End - S),"MD5Sum-Hash: %s\n",Res.MD5Sum.c_str());
+ }
+ if (Res.SHA1Sum.empty() == false)
+ End += snprintf(End,sizeof(S)-50 - (End - S),"SHA1-Hash: %s\n",Res.SHA1Sum.c_str());
+ if (Res.SHA256Sum.empty() == false)
+ End += snprintf(End,sizeof(S)-50 - (End - S),"SHA256-Hash: %s\n",Res.SHA256Sum.c_str());
+ if (Res.GPGVOutput.size() > 0)
+ End += snprintf(End,sizeof(S)-50 - (End - S),"GPGVOutput:\n");
+ for (vector<string>::iterator I = Res.GPGVOutput.begin();
+ I != Res.GPGVOutput.end(); I++)
+ End += snprintf(End,sizeof(S)-50 - (End - S), " %s\n", (*I).c_str());
+
+ if (Res.ResumePoint != 0)
+ End += snprintf(End,sizeof(S)-50 - (End - S),"Resume-Point: %lu\n",
+ Res.ResumePoint);
if (Res.IMSHit == true)
strcat(End,"IMS-Hit: true\n");
if (Alt != 0)
{
if (Alt->Filename.empty() == false)
- End += snprintf(End,sizeof(S) - (End - S),"Alt-Filename: %s\n",Alt->Filename.c_str());
+ End += snprintf(End,sizeof(S)-50 - (End - S),"Alt-Filename: %s\n",Alt->Filename.c_str());
if (Alt->Size != 0)
- End += snprintf(End,sizeof(S) - (End - S),"Alt-Size: %u\n",Alt->Size);
+ End += snprintf(End,sizeof(S)-50 - (End - S),"Alt-Size: %lu\n",Alt->Size);
if (Alt->LastModified != 0)
- End += snprintf(End,sizeof(S) - (End - S),"Alt-Last-Modified: %s\n",
+ End += snprintf(End,sizeof(S)-50 - (End - S),"Alt-Last-Modified: %s\n",
TimeRFC1123(Alt->LastModified).c_str());
if (Alt->MD5Sum.empty() == false)
- End += snprintf(End,sizeof(S) - (End - S),"Alt-MD5Sum: %s\n",
+ End += snprintf(End,sizeof(S)-50 - (End - S),"Alt-MD5-Hash: %s\n",
Alt->MD5Sum.c_str());
+ if (Alt->SHA1Sum.empty() == false)
+ End += snprintf(End,sizeof(S)-50 - (End - S),"Alt-SHA1-Hash: %s\n",
+ Alt->SHA1Sum.c_str());
+ if (Alt->SHA256Sum.empty() == false)
+ End += snprintf(End,sizeof(S)-50 - (End - S),"Alt-SHA256-Hash: %s\n",
+ Alt->SHA256Sum.c_str());
if (Alt->IMSHit == true)
strcat(End,"Alt-IMS-Hit: true\n");
strcat(End,"\n");
if (write(STDOUT_FILENO,S,strlen(S)) != (signed)strlen(S))
exit(100);
+
+ // Dequeue
+ FetchItem *Tmp = Queue;
+ Queue = Queue->Next;
+ delete Tmp;
+ if (Tmp == QueueBack)
+ QueueBack = Queue;
+}
+ /*}}}*/
+// AcqMethod::MediaFail - Syncronous request for new media /*{{{*/
+// ---------------------------------------------------------------------
+/* This sends a 403 Media Failure message to the APT and waits for it
+ to be ackd */
+bool pkgAcqMethod::MediaFail(string Required,string Drive)
+{
+ char S[1024];
+ snprintf(S,sizeof(S),"403 Media Failure\nMedia: %s\nDrive: %s\n\n",
+ Required.c_str(),Drive.c_str());
+
+ if (write(STDOUT_FILENO,S,strlen(S)) != (signed)strlen(S))
+ exit(100);
+
+ vector<string> MyMessages;
+
+ /* Here we read messages until we find a 603, each non 603 message is
+ appended to the main message list for later processing */
+ while (1)
+ {
+ if (WaitFd(STDIN_FILENO) == false)
+ return false;
+
+ if (ReadMessages(STDIN_FILENO,MyMessages) == false)
+ return false;
+
+ string Message = MyMessages.front();
+ MyMessages.erase(MyMessages.begin());
+
+ // Fetch the message number
+ char *End;
+ int Number = strtol(Message.c_str(),&End,10);
+ if (End == Message.c_str())
+ {
+ cerr << "Malformed message!" << endl;
+ exit(100);
+ }
+
+ // Change ack
+ if (Number == 603)
+ {
+ while (MyMessages.empty() == false)
+ {
+ Messages.push_back(MyMessages.front());
+ MyMessages.erase(MyMessages.begin());
+ }
+
+ return !StringToBool(LookupTag(Message,"Failed"),false);
+ }
+
+ Messages.push_back(Message);
+ }
}
/*}}}*/
// AcqMethod::Configuration - Handle the configuration message /*{{{*/
{
::Configuration &Cnf = *_config;
- const char *I = Message.begin();
+ const char *I = Message.c_str();
+ const char *MsgEnd = I + Message.length();
unsigned int Length = strlen("Config-Item");
- for (; I + Length < Message.end(); I++)
+ for (; I + Length < MsgEnd; I++)
{
// Not a config item
if (I[Length] != ':' || stringcasecmp(I,I+Length,"Config-Item") != 0)
I += Length + 1;
- for (; I < Message.end() && *I == ' '; I++);
+ for (; I < MsgEnd && *I == ' '; I++);
const char *Equals = I;
- for (; Equals < Message.end() && *Equals != '='; Equals++);
+ for (; Equals < MsgEnd && *Equals != '='; Equals++);
const char *End = Equals;
- for (; End < Message.end() && *End != '\n'; End++);
+ for (; End < MsgEnd && *End != '\n'; End++);
if (End == Equals)
return false;
- Cnf.Set(string(I,Equals-I),string(Equals+1,End-Equals-1));
+ Cnf.Set(DeQuoteString(string(I,Equals-I)),
+ DeQuoteString(string(Equals+1,End-Equals-1)));
I = End;
}
/*}}}*/
// AcqMethod::Run - Run the message engine /*{{{*/
// ---------------------------------------------------------------------
-/* */
-int pkgAcqMethod::Run()
+/* Fetch any messages and execute them. In single mode it returns 1 if
+ there are no more available messages - any other result is a
+ fatal failure code! */
+int pkgAcqMethod::Run(bool Single)
{
- SetNonBlock(STDIN_FILENO,true);
-
while (1)
{
+ // Block if the message queue is empty
if (Messages.empty() == true)
- if (WaitFd(STDIN_FILENO) == false)
- return 0;
+ {
+ if (Single == false)
+ if (WaitFd(STDIN_FILENO) == false)
+ break;
+ if (ReadMessages(STDIN_FILENO,Messages) == false)
+ break;
+ }
+
+ // Single mode exits if the message queue is empty
+ if (Single == true && Messages.empty() == true)
+ return -1;
- if (ReadMessages(STDIN_FILENO,Messages) == false)
- return 0;
-
string Message = Messages.front();
Messages.erase(Messages.begin());
}
switch (Number)
- {
+ {
case 601:
if (Configuration(Message) == false)
return 100;
break;
case 600:
- {
- CurrentURI = LookupTag(Message,"URI");
- DestFile = LookupTag(Message,"FileName");
- StrToTime(LookupTag(Message,"Last-Modified"),LastModified);
-
- if (Fetch(Message,CurrentURI) == false)
+ {
+ FetchItem *Tmp = new FetchItem;
+
+ Tmp->Uri = LookupTag(Message,"URI");
+ Tmp->DestFile = LookupTag(Message,"FileName");
+ if (StrToTime(LookupTag(Message,"Last-Modified"),Tmp->LastModified) == false)
+ Tmp->LastModified = 0;
+ Tmp->IndexFile = StringToBool(LookupTag(Message,"Index-File"),false);
+ Tmp->Next = 0;
+
+ // Append it to the list
+ FetchItem **I = &Queue;
+ for (; *I != 0; I = &(*I)->Next);
+ *I = Tmp;
+ if (QueueBack == 0)
+ QueueBack = Tmp;
+
+ // Notify that this item is to be fetched.
+ if (Fetch(Tmp) == false)
Fail();
+
break;
}
}
}
+ Exit();
return 0;
}
/*}}}*/
-// AcqMethod::FetchResult::FetchResult - Constructor /*{{{*/
+// AcqMethod::Log - Send a log message /*{{{*/
// ---------------------------------------------------------------------
/* */
-pkgAcqMethod::FetchResult::FetchResult() : LastModified(0),
- IMSHit(false), Size(0)
+void pkgAcqMethod::Log(const char *Format,...)
{
+ string CurrentURI = "<UNKNOWN>";
+ if (Queue != 0)
+ CurrentURI = Queue->Uri;
+
+ va_list args;
+ va_start(args,Format);
+
+ // sprintf the description
+ char S[1024];
+ unsigned int Len = snprintf(S,sizeof(S)-4,"101 Log\nURI: %s\n"
+ "Message: ",CurrentURI.c_str());
+
+ vsnprintf(S+Len,sizeof(S)-4-Len,Format,args);
+ strcat(S,"\n\n");
+
+ if (write(STDOUT_FILENO,S,strlen(S)) != (signed)strlen(S))
+ exit(100);
}
/*}}}*/
+// AcqMethod::Status - Send a status message /*{{{*/
+// ---------------------------------------------------------------------
+/* */
+void pkgAcqMethod::Status(const char *Format,...)
+{
+ string CurrentURI = "<UNKNOWN>";
+ if (Queue != 0)
+ CurrentURI = Queue->Uri;
+
+ va_list args;
+ va_start(args,Format);
+ // sprintf the description
+ char S[1024];
+ unsigned int Len = snprintf(S,sizeof(S)-4,"102 Status\nURI: %s\n"
+ "Message: ",CurrentURI.c_str());
+
+ vsnprintf(S+Len,sizeof(S)-4-Len,Format,args);
+ strcat(S,"\n\n");
+
+ if (write(STDOUT_FILENO,S,strlen(S)) != (signed)strlen(S))
+ exit(100);
+}
+ /*}}}*/
+
+// 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 /*{{{*/
+// ---------------------------------------------------------------------
+/* */
+pkgAcqMethod::FetchResult::FetchResult() : LastModified(0),
+ IMSHit(false), Size(0), ResumePoint(0)
+{
+}
+ /*}}}*/
+// AcqMethod::FetchResult::TakeHashes - Load hashes /*{{{*/
+// ---------------------------------------------------------------------
+/* This hides the number of hashes we are supporting from the caller.
+ It just deals with the hash class. */
+void pkgAcqMethod::FetchResult::TakeHashes(Hashes &Hash)
+{
+ MD5Sum = Hash.MD5.Result();
+ SHA1Sum = Hash.SHA1.Result();
+ SHA256Sum = Hash.SHA256.Result();
+}
+ /*}}}*/
projects / apt.git / blobdiff