// -*- mode: cpp; mode: fold -*-
// Description /*{{{*/
-// $Id: acquire-method.cc,v 1.7 1998/11/11 07:30:54 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 <config.h>
+
#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 <apt-pkg/md5.h>
+#include <apt-pkg/sha1.h>
+#include <apt-pkg/sha2.h>
+#include <stdarg.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <string>
+#include <vector>
+#include <iostream>
#include <stdio.h>
/*}}}*/
+using namespace std;
+
// AcqMethod::pkgAcqMethod - Constructor /*{{{*/
// ---------------------------------------------------------------------
/* This constructs the initialization text */
pkgAcqMethod::pkgAcqMethod(const char *Ver,unsigned long Flags)
{
- char S[300] = "";
- char *End = S;
- strcat(End,"100 Capabilities\n");
- sprintf(End+strlen(End),"Version: %s\n",Ver);
+ std::cout << "100 Capabilities\n"
+ << "Version: " << Ver << "\n";
if ((Flags & SingleInstance) == SingleInstance)
- strcat(End,"Single-Instance: true\n");
-
- if ((Flags & PreScan) == PreScan)
- strcat(End,"Pre-Scan: true\n");
-
+ std::cout << "Single-Instance: true\n";
+
if ((Flags & Pipeline) == Pipeline)
- strcat(End,"Pipeline: true\n");
-
+ std::cout << "Pipeline: true\n";
+
if ((Flags & SendConfig) == SendConfig)
- strcat(End,"Send-Config: true\n");
- strcat(End,"\n");
+ std::cout << "Send-Config: true\n";
+
+ if ((Flags & LocalOnly) == LocalOnly)
+ std::cout <<"Local-Only: true\n";
- if (write(STDOUT_FILENO,S,strlen(S)) != (signed)strlen(S))
- exit(100);
+ if ((Flags & NeedsCleanup) == NeedsCleanup)
+ std::cout << "Needs-Cleanup: true\n";
+
+ if ((Flags & Removable) == Removable)
+ std::cout << "Removable: true\n";
+
+ std::cout << "\n" << std::flush;
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)
-{
- char S[1024];
+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 = ' ';
+ }
+
if (Queue != 0)
{
- snprintf(S,sizeof(S),"400 URI Failure\nURI: %s\n"
- "Message: %s\n\n",Queue->Uri.c_str(),Err.c_str());
-
- // Dequeue
- FetchItem *Tmp = Queue;
- Queue = Queue->Next;
- delete Tmp;
+ std::cout << "400 URI Failure\nURI: " << Queue->Uri << "\n"
+ << "Message: " << Err;
+ if (IP.empty() == false && _config->FindB("Acquire::Failure::ShowIP", true) == true)
+ std::cout << " " << IP;
+ std::cout << "\n";
+ Dequeue();
}
else
- snprintf(S,sizeof(S),"400 URI Failure\nURI: <UNKNOWN>\n"
- "Message: %s\n\n",Err.c_str());
-
- if (write(STDOUT_FILENO,S,strlen(S)) != (signed)strlen(S))
- exit(100);
+ std::cout << "400 URI Failure\nURI: <UNKNOWN>\nMessage: " << Err << "\n";
+
+ if(FailReason.empty() == false)
+ std::cout << "FailReason: " << FailReason << "\n";
+ if (UsedMirror.empty() == false)
+ std::cout << "UsedMirror: " << UsedMirror << "\n";
+ // Set the transient flag
+ if (Transient == true)
+ std::cout << "Transient-Failure: true\n";
+
+ std::cout << "\n" << std::flush;
+}
+ /*}}}*/
+// AcqMethod::DropPrivsOrDie - Drop privileges or die /*{{{*/
+// ---------------------------------------------------------------------
+/* */
+void pkgAcqMethod::DropPrivsOrDie()
+{
+ if (!DropPrivileges()) {
+ Fail(false);
+ exit(112); /* call the european emergency number */
+ }
}
+
/*}}}*/
// AcqMethod::URIStart - Indicate a download is starting /*{{{*/
// ---------------------------------------------------------------------
{
if (Queue == 0)
abort();
-
- char S[1024] = "";
- char *End = S;
-
- End += snprintf(S,sizeof(S),"200 URI Start\nURI: %s\n",Queue->Uri.c_str());
+
+ std::cout << "200 URI Start\n"
+ << "URI: " << Queue->Uri << "\n";
if (Res.Size != 0)
- End += snprintf(End,sizeof(S) - (End - S),"Size: %u\n",Res.Size);
-
+ std::cout << "Size: " << Res.Size << "\n";
+
if (Res.LastModified != 0)
- End += snprintf(End,sizeof(S) - (End - S),"Last-Modified: %s\n",
- TimeRFC1123(Res.LastModified).c_str());
-
+ std::cout << "Last-Modified: " << TimeRFC1123(Res.LastModified) << "\n";
+
if (Res.ResumePoint != 0)
- End += snprintf(End,sizeof(S) - (End - S),"Resume-Point: %u\n",
- Res.ResumePoint);
-
- strcat(End,"\n");
- if (write(STDOUT_FILENO,S,strlen(S)) != (signed)strlen(S))
- exit(100);
+ std::cout << "Resume-Point: " << Res.ResumePoint << "\n";
+
+ if (UsedMirror.empty() == false)
+ std::cout << "UsedMirror: " << UsedMirror << "\n";
+
+ std::cout << "\n" << std::flush;
}
/*}}}*/
// AcqMethod::URIDone - A URI is finished /*{{{*/
// ---------------------------------------------------------------------
/* */
+static void printHashStringList(HashStringList const * const list)
+{
+ for (HashStringList::const_iterator hash = list->begin(); hash != list->end(); ++hash)
+ {
+ // very old compatibility name for MD5Sum
+ if (hash->HashType() == "MD5Sum")
+ std::cout << "MD5-Hash: " << hash->HashValue() << "\n";
+ std::cout << hash->HashType() << "-Hash: " << hash->HashValue() << "\n";
+ }
+}
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",Queue->Uri.c_str());
+
+ std::cout << "201 URI Done\n"
+ << "URI: " << Queue->Uri << "\n";
if (Res.Filename.empty() == false)
- End += snprintf(End,sizeof(S) - (End - S),"Filename: %s\n",Res.Filename.c_str());
-
+ std::cout << "Filename: " << Res.Filename << "\n";
+
if (Res.Size != 0)
- End += snprintf(End,sizeof(S) - (End - S),"Size: %u\n",Res.Size);
-
+ std::cout << "Size: " << Res.Size << "\n";
+
if (Res.LastModified != 0)
- End += snprintf(End,sizeof(S) - (End - S),"Last-Modified: %s\n",
- TimeRFC1123(Res.LastModified).c_str());
+ std::cout << "Last-Modified: " << TimeRFC1123(Res.LastModified) << "\n";
- if (Res.MD5Sum.empty() == false)
- End += snprintf(End,sizeof(S) - (End - S),"MD5Sum: %s\n",Res.MD5Sum.c_str());
+ printHashStringList(&Res.Hashes);
+
+ if (UsedMirror.empty() == false)
+ std::cout << "UsedMirror: " << UsedMirror << "\n";
+ if (Res.GPGVOutput.empty() == false)
+ {
+ std::cout << "GPGVOutput:\n";
+ for (vector<string>::const_iterator I = Res.GPGVOutput.begin();
+ I != Res.GPGVOutput.end(); ++I)
+ std::cout << " " << *I << "\n";
+ }
if (Res.ResumePoint != 0)
- End += snprintf(End,sizeof(S) - (End - S),"Resume-Point: %u\n",
- Res.ResumePoint);
+ std::cout << "Resume-Point: " << Res.ResumePoint << "\n";
if (Res.IMSHit == true)
- strcat(End,"IMS-Hit: true\n");
- End = S + strlen(S);
-
+ std::cout << "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());
-
+ std::cout << "Alt-Filename: " << Alt->Filename << "\n";
+
if (Alt->Size != 0)
- End += snprintf(End,sizeof(S) - (End - S),"Alt-Size: %u\n",Alt->Size);
-
+ std::cout << "Alt-Size: " << Alt->Size << "\n";
+
if (Alt->LastModified != 0)
- End += snprintf(End,sizeof(S) - (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",
- Alt->MD5Sum.c_str());
-
+ std::cout << "Alt-Last-Modified: " << TimeRFC1123(Alt->LastModified) << "\n";
+
+ printHashStringList(&Alt->Hashes);
+
if (Alt->IMSHit == true)
- strcat(End,"Alt-IMS-Hit: true\n");
+ std::cout << "Alt-IMS-Hit: true\n";
}
+
+ std::cout << "\n" << std::flush;
+ Dequeue();
+}
+ /*}}}*/
+// 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)
+{
+ fprintf(stdout, "403 Media Failure\nMedia: %s\nDrive: %s\n",
+ Required.c_str(),Drive.c_str());
+ std::cout << "\n" << std::flush;
+
+ vector<string> MyMessages;
- strcat(End,"\n");
- if (write(STDOUT_FILENO,S,strlen(S)) != (signed)strlen(S))
- exit(100);
+ /* 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;
- // Dequeue
- FetchItem *Tmp = Queue;
- Queue = Queue->Next;
- delete Tmp;
+ 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++);
- const char *Equals = I;
- for (; Equals < Message.end() && *Equals != '='; Equals++);
- const char *End = Equals;
- for (; End < Message.end() && *End != '\n'; End++);
- if (End == Equals)
+ for (; I < MsgEnd && *I == ' '; I++);
+ const char *Equals = (const char*) memchr(I, '=', MsgEnd - I);
+ if (Equals == NULL)
return false;
+ const char *End = (const char*) memchr(Equals, '\n', MsgEnd - Equals);
+ if (End == NULL)
+ End = MsgEnd;
- 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 /*{{{*/
// ---------------------------------------------------------------------
-/* */
+/* 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)
{
while (1)
{
if (Single == false)
if (WaitFd(STDIN_FILENO) == false)
- return 0;
-
+ break;
if (ReadMessages(STDIN_FILENO,Messages) == false)
- return 0;
+ break;
}
// Single mode exits if the message queue is empty
if (Single == true && Messages.empty() == true)
- return 0;
+ return -1;
string Message = Messages.front();
Messages.erase(Messages.begin());
}
switch (Number)
- {
+ {
case 601:
if (Configuration(Message) == false)
return 100;
Tmp->Uri = LookupTag(Message,"URI");
Tmp->DestFile = LookupTag(Message,"FileName");
- if (StrToTime(LookupTag(Message,"Last-Modified"),Tmp->LastModified) == false)
+ if (RFC1123StrToTime(LookupTag(Message,"Last-Modified").c_str(),Tmp->LastModified) == false)
Tmp->LastModified = 0;
-
+ Tmp->IndexFile = StringToBool(LookupTag(Message,"Index-File"),false);
+ Tmp->FailIgnore = StringToBool(LookupTag(Message,"Fail-Ignore"),false);
+ Tmp->ExpectedHashes = HashStringList();
+ for (char const * const * t = HashString::SupportedHashes(); *t != NULL; ++t)
+ {
+ std::string tag = "Expected-";
+ tag.append(*t);
+ std::string const hash = LookupTag(Message, tag.c_str());
+ if (hash.empty() == false)
+ Tmp->ExpectedHashes.push_back(HashString(*t, hash));
+ }
+ char *End;
+ Tmp->MaximumSize = strtoll(LookupTag(Message, "Maximum-Size", "0").c_str(), &End, 10);
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();
}
}
+ Exit();
return 0;
}
/*}}}*/
-// AcqMethod::Log - Send a log message /*{{{*/
+// AcqMethod::PrintStatus - privately really send a log/status message /*{{{*/
// ---------------------------------------------------------------------
/* */
-void pkgAcqMethod::Log(const char *Format,...)
+void pkgAcqMethod::PrintStatus(char const * const header, const char* Format,
+ va_list &args) const
{
string CurrentURI = "<UNKNOWN>";
if (Queue != 0)
CurrentURI = Queue->Uri;
-
+ if (UsedMirror.empty() == true)
+ fprintf(stdout, "%s\nURI: %s\nMessage: ",
+ header, CurrentURI.c_str());
+ else
+ fprintf(stdout, "%s\nURI: %s\nUsedMirror: %s\nMessage: ",
+ header, CurrentURI.c_str(), UsedMirror.c_str());
+ vfprintf(stdout,Format,args);
+ std::cout << "\n\n" << std::flush;
+}
+ /*}}}*/
+// AcqMethod::Log - Send a log message /*{{{*/
+// ---------------------------------------------------------------------
+/* */
+void pkgAcqMethod::Log(const char *Format,...)
+{
va_list args;
va_start(args,Format);
-
- // sprintf the description
- char S[1024];
- unsigned int Len = snprintf(S,sizeof(S),"101 Log\nURI: %s\n"
- "Message: ",CurrentURI.c_str());
-
- vsnprintf(S+Len,sizeof(S)-Len,Format,args);
- strcat(S,"\n\n");
-
- if (write(STDOUT_FILENO,S,strlen(S)) != (signed)strlen(S))
- exit(100);
+ PrintStatus("101 Log", Format, args);
+ va_end(args);
}
/*}}}*/
// 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),"102 Status\nURI: %s\n"
- "Message: ",CurrentURI.c_str());
-
- vsnprintf(S+Len,sizeof(S)-Len,Format,args);
- strcat(S,"\n\n");
-
- if (write(STDOUT_FILENO,S,strlen(S)) != (signed)strlen(S))
- exit(100);
+ PrintStatus("102 Status", Format, args);
+ va_end(args);
}
/*}}}*/
-
+// AcqMethod::Redirect - Send a redirect message /*{{{*/
+// ---------------------------------------------------------------------
+/* This method sends the redirect message and dequeues the item as
+ * the worker will enqueue again later on to the right queue */
+void pkgAcqMethod::Redirect(const string &NewURI)
+{
+ std::cout << "103 Redirect\nURI: " << Queue->Uri << "\n"
+ << "New-URI: " << NewURI << "\n"
+ << "\n" << std::flush;
+ Dequeue();
+}
+ /*}}}*/
// AcqMethod::FetchResult::FetchResult - Constructor /*{{{*/
// ---------------------------------------------------------------------
/* */
{
}
/*}}}*/
+// 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(class Hashes &Hash)
+{
+ Hashes = Hash.GetHashStringList();
+}
+ /*}}}*/
+void pkgAcqMethod::Dequeue() { /*{{{*/
+ FetchItem const * const Tmp = Queue;
+ Queue = Queue->Next;
+ if (Tmp == QueueBack)
+ QueueBack = Queue;
+ delete Tmp;
+}
+ /*}}}*/
+pkgAcqMethod::~pkgAcqMethod() {}
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