[apt.git] / apt-pkg / acquire-worker.cc

// -*- mode: cpp; mode: fold -*-
// Description								/*{{{*/
// $Id: acquire-worker.cc,v 1.26 1999/08/03 05:19:41 jgg Exp $
/* ######################################################################

   Acquire Worker 

   The worker process can startup either as a Configuration prober
   or as a queue runner. As a configuration prober it only reads the
   configuration message and 
   
   ##################################################################### */
									/*}}}*/
// Include Files							/*{{{*/
#ifdef __GNUG__
#pragma implementation "apt-pkg/acquire-worker.h"
#endif
#include <apt-pkg/acquire-worker.h>
#include <apt-pkg/acquire-item.h>
#include <apt-pkg/configuration.h>
#include <apt-pkg/error.h>
#include <apt-pkg/fileutl.h>
#include <apt-pkg/strutl.h>

#include <sys/stat.h>
#include <unistd.h>
#include <fcntl.h>
#include <signal.h>
#include <stdio.h>
#include <errno.h>
									/*}}}*/

// Worker::Worker - Constructor for Queue startup			/*{{{*/
// ---------------------------------------------------------------------
/* */
pkgAcquire::Worker::Worker(Queue *Q,MethodConfig *Cnf,
			   pkgAcquireStatus *Log) : Log(Log)
{
   OwnerQ = Q;
   Config = Cnf;
   Access = Cnf->Access;
   CurrentItem = 0;
   TotalSize = 0;
   CurrentSize = 0;
   
   Construct();   
}
									/*}}}*/
// Worker::Worker - Constructor for method config startup		/*{{{*/
// ---------------------------------------------------------------------
/* */
pkgAcquire::Worker::Worker(MethodConfig *Cnf)
{
   OwnerQ = 0;
   Config = Cnf;
   Access = Cnf->Access;
   CurrentItem = 0;
   TotalSize = 0;
   CurrentSize = 0;
   
   Construct();   
}
									/*}}}*/
// Worker::Construct - Constructor helper				/*{{{*/
// ---------------------------------------------------------------------
/* */
void pkgAcquire::Worker::Construct()
{
   NextQueue = 0;
   NextAcquire = 0;
   Process = -1;
   InFd = -1;
   OutFd = -1;
   OutReady = false;
   InReady = false;
   Debug = _config->FindB("Debug::pkgAcquire::Worker",false);
}
									/*}}}*/
// Worker::~Worker - Destructor						/*{{{*/
// ---------------------------------------------------------------------
/* */
pkgAcquire::Worker::~Worker()
{
   close(InFd);
   close(OutFd);
   
   if (Process > 0)
   {
      kill(Process,SIGINT);
      ExecWait(Process,Access.c_str(),true);
   }   
}
									/*}}}*/
// Worker::Start - Start the worker process				/*{{{*/
// ---------------------------------------------------------------------
/* This forks the method and inits the communication channel */
bool pkgAcquire::Worker::Start()
{
   // Get the method path
   string Method = _config->FindDir("Dir::Bin::Methods") + Access;
   if (FileExists(Method) == false)
      return _error->Error("The method driver %s could not be found.",Method.c_str());

   if (Debug == true)
      clog << "Starting method '" << Method << '\'' << endl;

   // Create the pipes
   int Pipes[4] = {-1,-1,-1,-1};
   if (pipe(Pipes) != 0 || pipe(Pipes+2) != 0)
   {
      _error->Errno("pipe","Failed to create IPC pipe to subprocess");
      for (int I = 0; I != 4; I++)
	 close(Pipes[I]);
      return false;
   }
   for (int I = 0; I != 4; I++)
      SetCloseExec(Pipes[0],true);
   
   // Fork off the process
   Process = ExecFork();

   // Spawn the subprocess
   if (Process == 0)
   {
      // Setup the FDs
      dup2(Pipes[1],STDOUT_FILENO);
      dup2(Pipes[2],STDIN_FILENO);
      dup2(((filebuf *)clog.rdbuf())->fd(),STDERR_FILENO);
      SetCloseExec(STDOUT_FILENO,false);
      SetCloseExec(STDIN_FILENO,false);      
      SetCloseExec(STDERR_FILENO,false);
      
      const char *Args[2];
      Args[0] = Method.c_str();
      Args[1] = 0;
      execv(Args[0],(char **)Args);
      cerr << "Failed to exec method " << Args[0] << endl;
      _exit(100);
   }

   // Fix up our FDs
   InFd = Pipes[0];
   OutFd = Pipes[3];
   SetNonBlock(Pipes[0],true);
   SetNonBlock(Pipes[3],true);
   close(Pipes[1]);
   close(Pipes[2]);
   OutReady = false;
   InReady = true;
   
   // Read the configuration data
   if (WaitFd(InFd) == false ||
       ReadMessages() == false)
      return _error->Error("Method %s did not start correctly",Method.c_str());

   RunMessages();
   if (OwnerQ != 0)
      SendConfiguration();
   
   return true;
}
									/*}}}*/
// Worker::ReadMessages - Read all pending messages into the list	/*{{{*/
// ---------------------------------------------------------------------
/* */
bool pkgAcquire::Worker::ReadMessages()
{
   if (::ReadMessages(InFd,MessageQueue) == false)
      return MethodFailure();
   return true;
}
									/*}}}*/
// Worker::RunMessage - Empty the message queue				/*{{{*/
// ---------------------------------------------------------------------
/* This takes the messages from the message queue and runs them through
   the parsers in order. */
bool pkgAcquire::Worker::RunMessages()
{
   while (MessageQueue.empty() == false)
   {
      string Message = MessageQueue.front();
      MessageQueue.erase(MessageQueue.begin());

      if (Debug == true)
	 clog << " <- " << Access << ':' << QuoteString(Message,"\n") << endl;
      
      // Fetch the message number
      char *End;
      int Number = strtol(Message.c_str(),&End,10);
      if (End == Message.c_str())
	 return _error->Error("Invalid message from method %s: %s",Access.c_str(),Message.c_str());

      string URI = LookupTag(Message,"URI");
      pkgAcquire::Queue::QItem *Itm = 0;
      if (URI.empty() == false)
	 Itm = OwnerQ->FindItem(URI,this);
      
      // Determine the message number and dispatch
      switch (Number)
      {
	 // 100 Capabilities
	 case 100:
	 if (Capabilities(Message) == false)
	    return _error->Error("Unable to process Capabilities message from %s",Access.c_str());
	 break;
	 
	 // 101 Log
	 case 101:
	 if (Debug == true)
	    clog << " <- (log) " << LookupTag(Message,"Message") << endl;
	 break;
	 
	 // 102 Status
	 case 102:
	 Status = LookupTag(Message,"Message");
	 break;
	    
	 // 200 URI Start
	 case 200:
	 {
	    if (Itm == 0)
	    {
	       _error->Error("Method gave invalid 200 URI Start message");
	       break;
	    }
	    
	    CurrentItem = Itm;
	    CurrentSize = 0;
	    TotalSize = atoi(LookupTag(Message,"Size","0").c_str());
	    ResumePoint = atoi(LookupTag(Message,"Resume-Point","0").c_str());
	    Itm->Owner->Start(Message,atoi(LookupTag(Message,"Size","0").c_str()));

	    if (Log != 0)
	       Log->Fetch(*Itm);

	    break;
	 }
	 
	 // 201 URI Done
	 case 201:
	 {
	    if (Itm == 0)
	    {
	       _error->Error("Method gave invalid 201 URI Done message");
	       break;
	    }

	    pkgAcquire::Item *Owner = Itm->Owner;
	    pkgAcquire::ItemDesc Desc = *Itm;
	    OwnerQ->ItemDone(Itm);
	    if (TotalSize != 0 && 
		atoi(LookupTag(Message,"Size","0").c_str()) != TotalSize)
	       _error->Warning("Bizzar Error - File size is not what the server reported %s %u",
			       LookupTag(Message,"Size","0").c_str(),TotalSize);

	    Owner->Done(Message,atoi(LookupTag(Message,"Size","0").c_str()),
			LookupTag(Message,"MD5-Hash"));
	    ItemDone();
	    
	    // Log that we are done
	    if (Log != 0)
	    {
	       if (StringToBool(LookupTag(Message,"IMS-Hit"),false) == true ||
		   StringToBool(LookupTag(Message,"Alt-IMS-Hit"),false) == true)
	       {
		  /* Hide 'hits' for local only sources - we also manage to
		     hide gets */
		  if (Config->LocalOnly == false)
		     Log->IMSHit(Desc);
	       }	       
	       else
		  Log->Done(Desc);
	    }
	    break;
	 }	 
	 
	 // 400 URI Failure
	 case 400:
	 {
	    if (Itm == 0)
	    {
	       _error->Error("Method gave invalid 400 URI Failure message");
	       break;
	    }

	    pkgAcquire::Item *Owner = Itm->Owner;
	    pkgAcquire::ItemDesc Desc = *Itm;
	    OwnerQ->ItemDone(Itm);
	    Owner->Failed(Message,Config);
	    ItemDone();

	    if (Log != 0)
	       Log->Fail(Desc);

	    break;
	 }	 
	 
	 // 401 General Failure
	 case 401:
	 _error->Error("Method %s General failure: %s",LookupTag(Message,"Message").c_str());
	 break;
	 
	 // 403 Media Change
	 case 403:
	 MediaChange(Message); 
	 break;
      }      
   }
   return true;
}
									/*}}}*/
// Worker::Capabilities - 100 Capabilities handler			/*{{{*/
// ---------------------------------------------------------------------
/* This parses the capabilities message and dumps it into the configuration
   structure. */
bool pkgAcquire::Worker::Capabilities(string Message)
{
   if (Config == 0)
      return true;
   
   Config->Version = LookupTag(Message,"Version");
   Config->SingleInstance = StringToBool(LookupTag(Message,"Single-Instance"),false);
   Config->Pipeline = StringToBool(LookupTag(Message,"Pipeline"),false);
   Config->SendConfig = StringToBool(LookupTag(Message,"Send-Config"),false);
   Config->LocalOnly = StringToBool(LookupTag(Message,"Local-Only"),false);

   // Some debug text
   if (Debug == true)
   {
      clog << "Configured access method " << Config->Access << endl;
      clog << "Version:" << Config->Version << " SingleInstance:" <<
	 Config->SingleInstance << 
	 " Pipeline:" << Config->Pipeline << " SendConfig:" << 
	 Config->SendConfig << endl;
   }
   
   return true;
}
									/*}}}*/
// Worker::MediaChange - Request a media change				/*{{{*/
// ---------------------------------------------------------------------
/* */
bool pkgAcquire::Worker::MediaChange(string Message)
{
   if (Log == 0 || Log->MediaChange(LookupTag(Message,"Media"),
				    LookupTag(Message,"Drive")) == false)
   {
      char S[300];
      sprintf(S,"603 Media Changed\nFailed: true\n\n");
      if (Debug == true)
	 clog << " -> " << Access << ':' << QuoteString(S,"\n") << endl;
      OutQueue += S;
      OutReady = true;
      return true;
   }

   char S[300];
   sprintf(S,"603 Media Changed\n\n");
   if (Debug == true)
      clog << " -> " << Access << ':' << QuoteString(S,"\n") << endl;
   OutQueue += S;
   OutReady = true;
   return true;
}
									/*}}}*/
// Worker::SendConfiguration - Send the config to the method		/*{{{*/
// ---------------------------------------------------------------------
/* */
bool pkgAcquire::Worker::SendConfiguration()
{
   if (Config->SendConfig == false)
      return true;

   if (OutFd == -1)
      return false;
   
   string Message = "601 Configuration\n";
   Message.reserve(2000);

   /* Write out all of the configuration directives by walking the 
      configuration tree */
   const Configuration::Item *Top = _config->Tree(0);
   for (; Top != 0;)
   {
      if (Top->Value.empty() == false)
      {
	 string Line = "Config-Item: " + Top->FullTag() + "=";
	 Line += QuoteString(Top->Value,"\n") + '\n';
	 Message += Line;
      }
      
      if (Top->Child != 0)
      {
	 Top = Top->Child;
	 continue;
      }
      
      while (Top != 0 && Top->Next == 0)
	 Top = Top->Parent;
      if (Top != 0)
	 Top = Top->Next;
   }   
   Message += '\n';

   if (Debug == true)
      clog << " -> " << Access << ':' << QuoteString(Message,"\n") << endl;
   OutQueue += Message;
   OutReady = true; 
   
   return true;
}
									/*}}}*/
// Worker::QueueItem - Add an item to the outbound queue		/*{{{*/
// ---------------------------------------------------------------------
/* Send a URI Acquire message to the method */
bool pkgAcquire::Worker::QueueItem(pkgAcquire::Queue::QItem *Item)
{
   if (OutFd == -1)
      return false;
   
   string Message = "600 URI Acquire\n";
   Message.reserve(300);
   Message += "URI: " + Item->URI;
   Message += "\nFilename: " + Item->Owner->DestFile;
   Message += Item->Owner->Custom600Headers();
   Message += "\n\n";
   
   if (Debug == true)
      clog << " -> " << Access << ':' << QuoteString(Message,"\n") << endl;
   OutQueue += Message;
   OutReady = true;
   
   return true;
}
									/*}}}*/
// Worker::OutFdRead - Out bound FD is ready				/*{{{*/
// ---------------------------------------------------------------------
/* */
bool pkgAcquire::Worker::OutFdReady()
{
   int Res;
   do
   {
      Res = write(OutFd,OutQueue.begin(),OutQueue.length());
   }
   while (Res < 0 && errno == EINTR);
   
   if (Res <= 0)
      return MethodFailure();

   // Hmm.. this should never happen.
   if (Res < 0)
      return true;
   
   OutQueue.erase(0,Res);
   if (OutQueue.empty() == true)
      OutReady = false;
   
   return true;
}
									/*}}}*/
// Worker::InFdRead - In bound FD is ready				/*{{{*/
// ---------------------------------------------------------------------
/* */
bool pkgAcquire::Worker::InFdReady()
{
   if (ReadMessages() == false)
      return false;
   RunMessages();
   return true;
}
									/*}}}*/
// Worker::MethodFailure - Called when the method fails			/*{{{*/
// ---------------------------------------------------------------------
/* This is called when the method is belived to have failed, probably because
   read returned -1. */
bool pkgAcquire::Worker::MethodFailure()
{
   _error->Error("Method %s has died unexpectedly!",Access.c_str());
   
   ExecWait(Process,Access.c_str(),true);
   Process = -1;
   close(InFd);
   close(OutFd);
   InFd = -1;
   OutFd = -1;
   OutReady = false;
   InReady = false;
   OutQueue = string();
   MessageQueue.erase(MessageQueue.begin(),MessageQueue.end());
   
   return false;
}
									/*}}}*/
// Worker::Pulse - Called periodically 					/*{{{*/
// ---------------------------------------------------------------------
/* */
void pkgAcquire::Worker::Pulse()
{
   if (CurrentItem == 0)
      return;
 
   struct stat Buf;
   if (stat(CurrentItem->Owner->DestFile.c_str(),&Buf) != 0)
      return;
   CurrentSize = Buf.st_size;
   
   // Hmm? Should not happen...
   if (CurrentSize > TotalSize && TotalSize != 0)
      TotalSize = CurrentSize;
}
									/*}}}*/
// Worker::ItemDone - Called when the current item is finished		/*{{{*/
// ---------------------------------------------------------------------
/* */
void pkgAcquire::Worker::ItemDone()
{
   CurrentItem = 0;
   CurrentSize = 0;
   TotalSize = 0;
   Status = string();
}
									/*}}}*/
Commit	Line	Data
0118833a AL	1	// -- mode: cpp; mode: fold --
0118833a AL	2	// Description /{{{/
bdae53f1	3	// $Id: acquire-worker.cc,v 1.26 1999/08/03 05:19:41 jgg Exp $
0118833a AL	4	/* ######################################################################
	5
	6	Acquire Worker
	7
3b5421b4 AL	8	The worker process can startup either as a Configuration prober
	9	or as a queue runner. As a configuration prober it only reads the
	10	configuration message and
	11
0118833a AL	12	##################################################################### */
	13	/}}}/
	14	// Include Files /{{{/
	15	#ifdef __GNUG__
	16	#pragma implementation "apt-pkg/acquire-worker.h"
3b5421b4	17	#endif
0118833a	18	#include <apt-pkg/acquire-worker.h>
0a8a80e5	19	#include <apt-pkg/acquire-item.h>
3b5421b4 AL	20	#include <apt-pkg/configuration.h>
	21	#include <apt-pkg/error.h>
	22	#include <apt-pkg/fileutl.h>
cdcc6d34	23	#include <apt-pkg/strutl.h>
3b5421b4	24
8267fe24	25	#include <sys/stat.h>
3b5421b4	26	#include <unistd.h>
b0db36b1	27	#include <fcntl.h>
3b5421b4	28	#include <signal.h>
542ec555	29	#include <stdio.h>
b0db36b1	30	#include <errno.h>
3b5421b4 AL	31	/}}}/
	32
	33	// Worker::Worker - Constructor for Queue startup /{{{/
	34	// ---------------------------------------------------------------------
	35	/* */
8267fe24 AL	36	pkgAcquire::Worker::Worker(Queue Q,MethodConfig Cnf,
8267fe24 AL	37	pkgAcquireStatus *Log) : Log(Log)
3b5421b4 AL	38	{
3b5421b4 AL	39	OwnerQ = Q;
0a8a80e5 AL	40	Config = Cnf;
	41	Access = Cnf->Access;
	42	CurrentItem = 0;
18ef0a78 AL	43	TotalSize = 0;
	44	CurrentSize = 0;
	45
3b5421b4 AL	46	Construct();
	47	}
	48	/}}}/
	49	// Worker::Worker - Constructor for method config startup /{{{/
	50	// ---------------------------------------------------------------------
	51	/* */
	52	pkgAcquire::Worker::Worker(MethodConfig *Cnf)
	53	{
	54	OwnerQ = 0;
	55	Config = Cnf;
	56	Access = Cnf->Access;
0a8a80e5	57	CurrentItem = 0;
18ef0a78 AL	58	TotalSize = 0;
18ef0a78 AL	59	CurrentSize = 0;
0a8a80e5	60
3b5421b4 AL	61	Construct();
	62	}
	63	/}}}/
	64	// Worker::Construct - Constructor helper /{{{/
	65	// ---------------------------------------------------------------------
	66	/* */
	67	void pkgAcquire::Worker::Construct()
	68	{
0a8a80e5 AL	69	NextQueue = 0;
0a8a80e5 AL	70	NextAcquire = 0;
3b5421b4 AL	71	Process = -1;
	72	InFd = -1;
	73	OutFd = -1;
0a8a80e5 AL	74	OutReady = false;
0a8a80e5 AL	75	InReady = false;
3b5421b4 AL	76	Debug = _config->FindB("Debug::pkgAcquire::Worker",false);
	77	}
	78	/}}}/
	79	// Worker::~Worker - Destructor /{{{/
	80	// ---------------------------------------------------------------------
	81	/* */
	82	pkgAcquire::Worker::~Worker()
	83	{
	84	close(InFd);
	85	close(OutFd);
	86
	87	if (Process > 0)
0a8a80e5	88	{
3b5421b4	89	kill(Process,SIGINT);
ddc1d8d0	90	ExecWait(Process,Access.c_str(),true);
0a8a80e5	91	}
3b5421b4 AL	92	}
	93	/}}}/
	94	// Worker::Start - Start the worker process /{{{/
	95	// ---------------------------------------------------------------------
	96	/* This forks the method and inits the communication channel */
	97	bool pkgAcquire::Worker::Start()
	98	{
	99	// Get the method path
	100	string Method = _config->FindDir("Dir::Bin::Methods") + Access;
	101	if (FileExists(Method) == false)
	102	return _error->Error("The method driver %s could not be found.",Method.c_str());
	103
	104	if (Debug == true)
	105	clog << "Starting method '" << Method << '\'' << endl;
	106
	107	// Create the pipes
	108	int Pipes[4] = {-1,-1,-1,-1};
	109	if (pipe(Pipes) != 0 \|\| pipe(Pipes+2) != 0)
	110	{
	111	_error->Errno("pipe","Failed to create IPC pipe to subprocess");
	112	for (int I = 0; I != 4; I++)
	113	close(Pipes[I]);
	114	return false;
	115	}
8b89e57f AL	116	for (int I = 0; I != 4; I++)
	117	SetCloseExec(Pipes[0],true);
	118
3b5421b4	119	// Fork off the process
54676e1a	120	Process = ExecFork();
3b5421b4 AL	121
	122	// Spawn the subprocess
	123	if (Process == 0)
	124	{
	125	// Setup the FDs
	126	dup2(Pipes[1],STDOUT_FILENO);
	127	dup2(Pipes[2],STDIN_FILENO);
	128	dup2(((filebuf *)clog.rdbuf())->fd(),STDERR_FILENO);
3b5421b4 AL	129	SetCloseExec(STDOUT_FILENO,false);
	130	SetCloseExec(STDIN_FILENO,false);
	131	SetCloseExec(STDERR_FILENO,false);
	132
	133	const char *Args[2];
	134	Args[0] = Method.c_str();
	135	Args[1] = 0;
	136	execv(Args[0],(char **)Args);
	137	cerr << "Failed to exec method " << Args[0] << endl;
0dbb95d8	138	_exit(100);
3b5421b4 AL	139	}
	140
	141	// Fix up our FDs
	142	InFd = Pipes[0];
	143	OutFd = Pipes[3];
	144	SetNonBlock(Pipes[0],true);
	145	SetNonBlock(Pipes[3],true);
	146	close(Pipes[1]);
	147	close(Pipes[2]);
0a8a80e5 AL	148	OutReady = false;
0a8a80e5 AL	149	InReady = true;
3b5421b4 AL	150
	151	// Read the configuration data
	152	if (WaitFd(InFd) == false \|\|
	153	ReadMessages() == false)
	154	return _error->Error("Method %s did not start correctly",Method.c_str());
	155
	156	RunMessages();
8b89e57f AL	157	if (OwnerQ != 0)
8b89e57f AL	158	SendConfiguration();
3b5421b4 AL	159
	160	return true;
	161	}
	162	/}}}/
	163	// Worker::ReadMessages - Read all pending messages into the list /{{{/
	164	// ---------------------------------------------------------------------
0a8a80e5	165	/* */
3b5421b4 AL	166	bool pkgAcquire::Worker::ReadMessages()
3b5421b4 AL	167	{
0a8a80e5 AL	168	if (::ReadMessages(InFd,MessageQueue) == false)
0a8a80e5 AL	169	return MethodFailure();
3b5421b4 AL	170	return true;
	171	}
	172	/}}}/
3b5421b4 AL	173	// Worker::RunMessage - Empty the message queue /{{{/
	174	// ---------------------------------------------------------------------
	175	/* This takes the messages from the message queue and runs them through
	176	the parsers in order. */
	177	bool pkgAcquire::Worker::RunMessages()
	178	{
	179	while (MessageQueue.empty() == false)
	180	{
	181	string Message = MessageQueue.front();
	182	MessageQueue.erase(MessageQueue.begin());
0a8a80e5 AL	183
	184	if (Debug == true)
	185	clog << " <- " << Access << ':' << QuoteString(Message,"\n") << endl;
3b5421b4 AL	186
	187	// Fetch the message number
	188	char *End;
	189	int Number = strtol(Message.c_str(),&End,10);
	190	if (End == Message.c_str())
	191	return _error->Error("Invalid message from method %s: %s",Access.c_str(),Message.c_str());
	192
c88edf1d AL	193	string URI = LookupTag(Message,"URI");
	194	pkgAcquire::Queue::QItem *Itm = 0;
	195	if (URI.empty() == false)
	196	Itm = OwnerQ->FindItem(URI,this);
bfd22fc0	197
3b5421b4 AL	198	// Determine the message number and dispatch
	199	switch (Number)
	200	{
0a8a80e5	201	// 100 Capabilities
3b5421b4 AL	202	case 100:
	203	if (Capabilities(Message) == false)
	204	return _error->Error("Unable to process Capabilities message from %s",Access.c_str());
	205	break;
0a8a80e5 AL	206
	207	// 101 Log
	208	case 101:
	209	if (Debug == true)
	210	clog << " <- (log) " << LookupTag(Message,"Message") << endl;
	211	break;
	212
	213	// 102 Status
	214	case 102:
	215	Status = LookupTag(Message,"Message");
	216	break;
	217
	218	// 200 URI Start
	219	case 200:
c88edf1d AL	220	{
	221	if (Itm == 0)
	222	{
93bf083d	223	_error->Error("Method gave invalid 200 URI Start message");
c88edf1d AL	224	break;
c88edf1d AL	225	}
8267fe24	226
c88edf1d AL	227	CurrentItem = Itm;
	228	CurrentSize = 0;
	229	TotalSize = atoi(LookupTag(Message,"Size","0").c_str());
8b75eb1c	230	ResumePoint = atoi(LookupTag(Message,"Resume-Point","0").c_str());
8267fe24	231	Itm->Owner->Start(Message,atoi(LookupTag(Message,"Size","0").c_str()));
8b75eb1c	232
8267fe24 AL	233	if (Log != 0)
	234	Log->Fetch(*Itm);
	235
c88edf1d AL	236	break;
c88edf1d AL	237	}
0a8a80e5 AL	238
	239	// 201 URI Done
	240	case 201:
c88edf1d AL	241	{
	242	if (Itm == 0)
	243	{
93bf083d	244	_error->Error("Method gave invalid 201 URI Done message");
c88edf1d AL	245	break;
	246	}
	247
bfd22fc0	248	pkgAcquire::Item *Owner = Itm->Owner;
8267fe24	249	pkgAcquire::ItemDesc Desc = *Itm;
be4401bf	250	OwnerQ->ItemDone(Itm);
18ef0a78 AL	251	if (TotalSize != 0 &&
	252	atoi(LookupTag(Message,"Size","0").c_str()) != TotalSize)
	253	_error->Warning("Bizzar Error - File size is not what the server reported %s %u",
	254	LookupTag(Message,"Size","0").c_str(),TotalSize);
bdae53f1 AL	255
bdae53f1 AL	256	Owner->Done(Message,atoi(LookupTag(Message,"Size","0").c_str()),
18ef0a78	257	LookupTag(Message,"MD5-Hash"));
8267fe24 AL	258	ItemDone();
	259
	260	// Log that we are done
	261	if (Log != 0)
	262	{
	263	if (StringToBool(LookupTag(Message,"IMS-Hit"),false) == true \|\|
	264	StringToBool(LookupTag(Message,"Alt-IMS-Hit"),false) == true)
c46824ce AL	265	{
	266	/* Hide 'hits' for local only sources - we also manage to
	267	hide gets */
	268	if (Config->LocalOnly == false)
	269	Log->IMSHit(Desc);
	270	}
8267fe24 AL	271	else
8267fe24 AL	272	Log->Done(Desc);
18ef0a78	273	}
c88edf1d AL	274	break;
c88edf1d AL	275	}
0a8a80e5 AL	276
	277	// 400 URI Failure
	278	case 400:
c88edf1d AL	279	{
	280	if (Itm == 0)
	281	{
93bf083d	282	_error->Error("Method gave invalid 400 URI Failure message");
c88edf1d AL	283	break;
	284	}
	285
bfd22fc0	286	pkgAcquire::Item *Owner = Itm->Owner;
8267fe24	287	pkgAcquire::ItemDesc Desc = *Itm;
c88edf1d	288	OwnerQ->ItemDone(Itm);
7d8afa39	289	Owner->Failed(Message,Config);
8267fe24	290	ItemDone();
7d8afa39	291
8267fe24 AL	292	if (Log != 0)
8267fe24 AL	293	Log->Fail(Desc);
7d8afa39	294
c88edf1d AL	295	break;
c88edf1d AL	296	}
0a8a80e5 AL	297
	298	// 401 General Failure
	299	case 401:
	300	_error->Error("Method %s General failure: %s",LookupTag(Message,"Message").c_str());
	301	break;
542ec555 AL	302
	303	// 403 Media Change
	304	case 403:
	305	MediaChange(Message);
	306	break;
3b5421b4 AL	307	}
	308	}
	309	return true;
	310	}
	311	/}}}/
	312	// Worker::Capabilities - 100 Capabilities handler /{{{/
	313	// ---------------------------------------------------------------------
	314	/* This parses the capabilities message and dumps it into the configuration
	315	structure. */
	316	bool pkgAcquire::Worker::Capabilities(string Message)
	317	{
	318	if (Config == 0)
	319	return true;
	320
	321	Config->Version = LookupTag(Message,"Version");
	322	Config->SingleInstance = StringToBool(LookupTag(Message,"Single-Instance"),false);
0a8a80e5 AL	323	Config->Pipeline = StringToBool(LookupTag(Message,"Pipeline"),false);
0a8a80e5 AL	324	Config->SendConfig = StringToBool(LookupTag(Message,"Send-Config"),false);
e331f6ed	325	Config->LocalOnly = StringToBool(LookupTag(Message,"Local-Only"),false);
3b5421b4 AL	326
	327	// Some debug text
	328	if (Debug == true)
	329	{
	330	clog << "Configured access method " << Config->Access << endl;
0a8a80e5	331	clog << "Version:" << Config->Version << " SingleInstance:" <<
a72ace20	332	Config->SingleInstance <<
0a8a80e5 AL	333	" Pipeline:" << Config->Pipeline << " SendConfig:" <<
0a8a80e5 AL	334	Config->SendConfig << endl;
3b5421b4 AL	335	}
3b5421b4 AL	336
542ec555 AL	337	return true;
	338	}
	339	/}}}/
	340	// Worker::MediaChange - Request a media change /{{{/
	341	// ---------------------------------------------------------------------
	342	/* */
	343	bool pkgAcquire::Worker::MediaChange(string Message)
	344	{
	345	if (Log == 0 \|\| Log->MediaChange(LookupTag(Message,"Media"),
	346	LookupTag(Message,"Drive")) == false)
	347	{
	348	char S[300];
	349	sprintf(S,"603 Media Changed\nFailed: true\n\n");
	350	if (Debug == true)
	351	clog << " -> " << Access << ':' << QuoteString(S,"\n") << endl;
	352	OutQueue += S;
	353	OutReady = true;
	354	return true;
	355	}
	356
	357	char S[300];
	358	sprintf(S,"603 Media Changed\n\n");
	359	if (Debug == true)
	360	clog << " -> " << Access << ':' << QuoteString(S,"\n") << endl;
	361	OutQueue += S;
	362	OutReady = true;
3b5421b4 AL	363	return true;
3b5421b4 AL	364	}
0118833a	365	/}}}/
0a8a80e5 AL	366	// Worker::SendConfiguration - Send the config to the method /{{{/
	367	// ---------------------------------------------------------------------
	368	/* */
	369	bool pkgAcquire::Worker::SendConfiguration()
	370	{
	371	if (Config->SendConfig == false)
	372	return true;
	373
	374	if (OutFd == -1)
	375	return false;
	376
	377	string Message = "601 Configuration\n";
	378	Message.reserve(2000);
	379
	380	/* Write out all of the configuration directives by walking the
	381	configuration tree */
	382	const Configuration::Item *Top = _config->Tree(0);
	383	for (; Top != 0;)
	384	{
	385	if (Top->Value.empty() == false)
	386	{
	387	string Line = "Config-Item: " + Top->FullTag() + "=";
	388	Line += QuoteString(Top->Value,"\n") + '\n';
	389	Message += Line;
	390	}
	391
	392	if (Top->Child != 0)
	393	{
	394	Top = Top->Child;
	395	continue;
	396	}
	397
	398	while (Top != 0 && Top->Next == 0)
	399	Top = Top->Parent;
	400	if (Top != 0)
	401	Top = Top->Next;
	402	}
	403	Message += '\n';
	404
	405	if (Debug == true)
	406	clog << " -> " << Access << ':' << QuoteString(Message,"\n") << endl;
	407	OutQueue += Message;
	408	OutReady = true;
	409
	410	return true;
	411	}
	412	/}}}/
	413	// Worker::QueueItem - Add an item to the outbound queue /{{{/
	414	// ---------------------------------------------------------------------
	415	/* Send a URI Acquire message to the method */
	416	bool pkgAcquire::Worker::QueueItem(pkgAcquire::Queue::QItem *Item)
	417	{
	418	if (OutFd == -1)
	419	return false;
	420
	421	string Message = "600 URI Acquire\n";
	422	Message.reserve(300);
	423	Message += "URI: " + Item->URI;
	424	Message += "\nFilename: " + Item->Owner->DestFile;
	425	Message += Item->Owner->Custom600Headers();
	426	Message += "\n\n";
	427
	428	if (Debug == true)
	429	clog << " -> " << Access << ':' << QuoteString(Message,"\n") << endl;
430	OutQueue += Message;
431	OutReady = true;
432
433	return true;
434	}
435	/}}}/
436	// Worker::OutFdRead - Out bound FD is ready /{{{/
437	// ---------------------------------------------------------------------
438	/* */
439	bool pkgAcquire::Worker::OutFdReady()
440	{
b0db36b1 AL	441	int Res;
	442	do
	443	{
	444	Res = write(OutFd,OutQueue.begin(),OutQueue.length());
	445	}
	446	while (Res < 0 && errno == EINTR);
	447
0a8a80e5 AL	448	if (Res <= 0)
	449	return MethodFailure();
	450
	451	// Hmm.. this should never happen.
	452	if (Res < 0)
	453	return true;
	454
	455	OutQueue.erase(0,Res);
	456	if (OutQueue.empty() == true)
	457	OutReady = false;
	458
	459	return true;
	460	}
	461	/}}}/
	462	// Worker::InFdRead - In bound FD is ready /{{{/
	463	// ---------------------------------------------------------------------
	464	/* */
	465	bool pkgAcquire::Worker::InFdReady()
	466	{
	467	if (ReadMessages() == false)
	468	return false;
	469	RunMessages();
	470	return true;
	471	}
	472	/}}}/
	473	// Worker::MethodFailure - Called when the method fails /{{{/
	474	// ---------------------------------------------------------------------
	475	/* This is called when the method is belived to have failed, probably because
	476	read returned -1. */
	477	bool pkgAcquire::Worker::MethodFailure()
	478	{
76d97c26 AL	479	_error->Error("Method %s has died unexpectedly!",Access.c_str());
76d97c26 AL	480
ddc1d8d0	481	ExecWait(Process,Access.c_str(),true);
0a8a80e5 AL	482	Process = -1;
	483	close(InFd);
	484	close(OutFd);
	485	InFd = -1;
	486	OutFd = -1;
	487	OutReady = false;
	488	InReady = false;
	489	OutQueue = string();
	490	MessageQueue.erase(MessageQueue.begin(),MessageQueue.end());
	491
	492	return false;
	493	}
	494	/}}}/
8267fe24 AL	495	// Worker::Pulse - Called periodically /{{{/
	496	// ---------------------------------------------------------------------
	497	/* */
	498	void pkgAcquire::Worker::Pulse()
	499	{
	500	if (CurrentItem == 0)
	501	return;
542ec555	502
8267fe24 AL	503	struct stat Buf;
	504	if (stat(CurrentItem->Owner->DestFile.c_str(),&Buf) != 0)
	505	return;
	506	CurrentSize = Buf.st_size;
18ef0a78 AL	507
	508	// Hmm? Should not happen...
	509	if (CurrentSize > TotalSize && TotalSize != 0)
	510	TotalSize = CurrentSize;
8267fe24 AL	511	}
	512	/}}}/
	513	// Worker::ItemDone - Called when the current item is finished /{{{/
	514	// ---------------------------------------------------------------------
	515	/* */
	516	void pkgAcquire::Worker::ItemDone()
	517	{
	518	CurrentItem = 0;
	519	CurrentSize = 0;
	520	TotalSize = 0;
	521	Status = string();
	522	}
	523	/}}}/