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

// -*- mode: cpp; mode: fold -*-
// Description								/*{{{*/
// $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 <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 */
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);

   if ((Flags & SingleInstance) == SingleInstance)
      strcat(End,"Single-Instance: 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(bool Transient)
{
   string Err = "Undetermined Error";
   if (_error->empty() == false)
      _error->PopMessage(Err);   
   _error->Discard();
   Fail(Err,Transient);
}
									/*}}}*/
// AcqMethod::Fail - A fetch has failed					/*{{{*/
// ---------------------------------------------------------------------
/* */
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];
   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)
{
   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());
   if (Res.Size != 0)
      End += snprintf(End,sizeof(S)-4 - (End - S),"Size: %lu\n",Res.Size);
   
   if (Res.LastModified != 0)
      End += snprintf(End,sizeof(S)-4 - (End - S),"Last-Modified: %s\n",
		      TimeRFC1123(Res.LastModified).c_str());
   
   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))
      exit(100);
}
									/*}}}*/
// AcqMethod::URIDone - A URI is finished				/*{{{*/
// ---------------------------------------------------------------------
/* */
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());

   if (Res.Filename.empty() == false)
      End += snprintf(End,sizeof(S)-50 - (End - S),"Filename: %s\n",Res.Filename.c_str());
   
   if (Res.Size != 0)
      End += snprintf(End,sizeof(S)-50 - (End - S),"Size: %lu\n",Res.Size);
   
   if (Res.LastModified != 0)
      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)-50 - (End - S),"MD5-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.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");
   End = S + strlen(S);
   
   if (Alt != 0)
   {
      if (Alt->Filename.empty() == false)
	 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)-50 - (End - S),"Alt-Size: %lu\n",Alt->Size);
      
      if (Alt->LastModified != 0)
	 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)-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->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,"Fail"),false);
      }
      
      Messages.push_back(Message);
   }   
}
									/*}}}*/
// AcqMethod::Configuration - Handle the configuration message		/*{{{*/
// ---------------------------------------------------------------------
/* This parses each configuration entry and puts it into the _config 
   Configuration class. */
bool pkgAcqMethod::Configuration(string Message)
{
   ::Configuration &Cnf = *_config;
   
   const char *I = Message.c_str();
   const char *MsgEnd = I + Message.length();
   
   unsigned int Length = strlen("Config-Item");
   for (; I + Length < MsgEnd; I++)
   {
      // Not a config item
      if (I[Length] != ':' || stringcasecmp(I,I+Length,"Config-Item") != 0)
	 continue;
      
      I += Length + 1;
      
      for (; I < MsgEnd && *I == ' '; I++);
      const char *Equals = I;
      for (; Equals < MsgEnd && *Equals != '='; Equals++);
      const char *End = Equals;
      for (; End < MsgEnd && *End != '\n'; End++);
      if (End == Equals)
	 return false;
      
      Cnf.Set(DeQuoteString(string(I,Equals-I)),
	      DeQuoteString(string(Equals+1,End-Equals-1)));
      I = End;
   }
   
   return true;
}
									/*}}}*/
// 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)
   {
      // Block if the message queue is empty
      if (Messages.empty() == true)
      {
	 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;
      
      string Message = Messages.front();
      Messages.erase(Messages.begin());
      
      // Fetch the message number
      char *End;
      int Number = strtol(Message.c_str(),&End,10);
      if (End == Message.c_str())
      {	 
	 cerr << "Malformed message!" << endl;
	 return 100;
      }

      switch (Number)
      {	 
	 case 601:
	 if (Configuration(Message) == false)
	    return 100;
	 break;
	 
	 case 600:
	 {
	    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::Log - Send a log message					/*{{{*/
// ---------------------------------------------------------------------
/* */
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::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();
}
									/*}}}*/
Commit	Line	Data
93bf083d AL	1	// -- mode: cpp; mode: fold --
93bf083d AL	2	// Description /{{{/
7db98ffc	3	// $Id: acquire-method.cc,v 1.27.2.1 2003/12/24 23:09:17 mdz Exp $
93bf083d AL	4	/* ######################################################################
	5
	6	Acquire Method
	7
8384ebdf	8	This is a skeleton class that implements most of the functionality
b2e465d6	9	of a method and some useful functions to make method implementation
8384ebdf AL	10	simpler. The methods all derive this and specialize it. The most
	11	complex implementation is the http method which needs to provide
	12	pipelining, it runs the message engine at the same time it is
	13	downloading files..
	14
93bf083d AL	15	##################################################################### */
	16	/}}}/
	17	// Include Files /{{{/
	18	#ifdef __GNUG__
	19	#pragma implementation "apt-pkg/acquire-method.h"
	20	#endif
	21	#include <apt-pkg/acquire-method.h>
	22	#include <apt-pkg/error.h>
	23	#include <apt-pkg/configuration.h>
cdcc6d34	24	#include <apt-pkg/strutl.h>
93bf083d	25	#include <apt-pkg/fileutl.h>
a7c835af	26	#include <apt-pkg/hashes.h>
b4fc9b6f AL	27
b4fc9b6f AL	28	#include <iostream>
2c206aa4	29	#include <stdarg.h>
93bf083d	30	#include <stdio.h>
65a1e968	31	#include <unistd.h>
7db98ffc	32	#include <sys/signal.h>
93bf083d AL	33	/}}}/
93bf083d AL	34
b4fc9b6f AL	35	using namespace std;
b4fc9b6f AL	36
93bf083d AL	37	// AcqMethod::pkgAcqMethod - Constructor /{{{/
	38	// ---------------------------------------------------------------------
	39	/* This constructs the initialization text */
	40	pkgAcqMethod::pkgAcqMethod(const char *Ver,unsigned long Flags)
	41	{
	42	char S[300] = "";
	43	char *End = S;
	44	strcat(End,"100 Capabilities\n");
	45	sprintf(End+strlen(End),"Version: %s\n",Ver);
	46
	47	if ((Flags & SingleInstance) == SingleInstance)
	48	strcat(End,"Single-Instance: true\n");
	49
93bf083d AL	50	if ((Flags & Pipeline) == Pipeline)
	51	strcat(End,"Pipeline: true\n");
	52
	53	if ((Flags & SendConfig) == SendConfig)
	54	strcat(End,"Send-Config: true\n");
e331f6ed AL	55
	56	if ((Flags & LocalOnly) == LocalOnly)
	57	strcat(End,"Local-Only: true\n");
8e5fc8f5 AL	58
	59	if ((Flags & NeedsCleanup) == NeedsCleanup)
	60	strcat(End,"Needs-Cleanup: true\n");
459681d3 AL	61
	62	if ((Flags & Removable) == Removable)
	63	strcat(End,"Removable: true\n");
93bf083d AL	64	strcat(End,"\n");
	65
	66	if (write(STDOUT_FILENO,S,strlen(S)) != (signed)strlen(S))
	67	exit(100);
be4401bf AL	68
be4401bf AL	69	SetNonBlock(STDIN_FILENO,true);
5cb5d8dc	70
92e889c8	71	Queue = 0;
5cb5d8dc	72	QueueBack = 0;
93bf083d AL	73	}
	74	/}}}/
	75	// AcqMethod::Fail - A fetch has failed /{{{/
	76	// ---------------------------------------------------------------------
	77	/* */
a72ace20	78	void pkgAcqMethod::Fail(bool Transient)
93bf083d AL	79	{
	80	string Err = "Undetermined Error";
	81	if (_error->empty() == false)
	82	_error->PopMessage(Err);
	83	_error->Discard();
a72ace20	84	Fail(Err,Transient);
93bf083d AL	85	}
	86	/}}}/
	87	// AcqMethod::Fail - A fetch has failed /{{{/
	88	// ---------------------------------------------------------------------
	89	/* */
a72ace20	90	void pkgAcqMethod::Fail(string Err,bool Transient)
6d5dd02a AL	91	{
6d5dd02a AL	92	// Strip out junk from the error messages
b4fc9b6f	93	for (string::iterator I = Err.begin(); I != Err.end(); I++)
6d5dd02a AL	94	{
	95	if (*I == '\r')
	96	*I = ' ';
	97	if (*I == '\n')
	98	*I = ' ';
	99	}
	100
93bf083d	101	char S[1024];
be4401bf AL	102	if (Queue != 0)
be4401bf AL	103	{
8b067c22	104	snprintf(S,sizeof(S)-50,"400 URI Failure\nURI: %s\n"
b2e465d6 AL	105	"Message: %s %s\n",Queue->Uri.c_str(),Err.c_str(),
b2e465d6 AL	106	FailExtra.c_str());
a72ace20	107
be4401bf AL	108	// Dequeue
	109	FetchItem *Tmp = Queue;
	110	Queue = Queue->Next;
	111	delete Tmp;
5cb5d8dc AL	112	if (Tmp == QueueBack)
5cb5d8dc AL	113	QueueBack = Queue;
be4401bf AL	114	}
be4401bf AL	115	else
8b067c22	116	snprintf(S,sizeof(S)-50,"400 URI Failure\nURI: <UNKNOWN>\n"
b2e465d6 AL	117	"Message: %s %s\n",Err.c_str(),
b2e465d6 AL	118	FailExtra.c_str());
be4401bf	119
a72ace20 AL	120	// Set the transient flag
	121	if (Transient == true)
	122	strcat(S,"Transient-Failure: true\n\n");
	123	else
	124	strcat(S,"\n");
	125
93bf083d AL	126	if (write(STDOUT_FILENO,S,strlen(S)) != (signed)strlen(S))
	127	exit(100);
	128	}
	129	/}}}/
	130	// AcqMethod::URIStart - Indicate a download is starting /{{{/
	131	// ---------------------------------------------------------------------
	132	/* */
be4401bf	133	void pkgAcqMethod::URIStart(FetchResult &Res)
93bf083d	134	{
be4401bf AL	135	if (Queue == 0)
	136	abort();
	137
93bf083d AL	138	char S[1024] = "";
	139	char *End = S;
	140
be4401bf	141	End += snprintf(S,sizeof(S),"200 URI Start\nURI: %s\n",Queue->Uri.c_str());
93bf083d	142	if (Res.Size != 0)
8b067c22	143	End += snprintf(End,sizeof(S)-4 - (End - S),"Size: %lu\n",Res.Size);
93bf083d AL	144
93bf083d AL	145	if (Res.LastModified != 0)
8b067c22	146	End += snprintf(End,sizeof(S)-4 - (End - S),"Last-Modified: %s\n",
93bf083d AL	147	TimeRFC1123(Res.LastModified).c_str());
93bf083d AL	148
be4401bf	149	if (Res.ResumePoint != 0)
8b067c22	150	End += snprintf(End,sizeof(S)-4 - (End - S),"Resume-Point: %lu\n",
be4401bf	151	Res.ResumePoint);
93bf083d AL	152
	153	strcat(End,"\n");
	154	if (write(STDOUT_FILENO,S,strlen(S)) != (signed)strlen(S))
	155	exit(100);
	156	}
	157	/}}}/
	158	// AcqMethod::URIDone - A URI is finished /{{{/
	159	// ---------------------------------------------------------------------
	160	/* */
	161	void pkgAcqMethod::URIDone(FetchResult &Res, FetchResult *Alt)
	162	{
be4401bf AL	163	if (Queue == 0)
	164	abort();
	165
93bf083d AL	166	char S[1024] = "";
	167	char *End = S;
	168
be4401bf	169	End += snprintf(S,sizeof(S),"201 URI Done\nURI: %s\n",Queue->Uri.c_str());
93bf083d AL	170
93bf083d AL	171	if (Res.Filename.empty() == false)
8b067c22	172	End += snprintf(End,sizeof(S)-50 - (End - S),"Filename: %s\n",Res.Filename.c_str());
93bf083d AL	173
93bf083d AL	174	if (Res.Size != 0)
8b067c22	175	End += snprintf(End,sizeof(S)-50 - (End - S),"Size: %lu\n",Res.Size);
93bf083d AL	176
93bf083d AL	177	if (Res.LastModified != 0)
8b067c22	178	End += snprintf(End,sizeof(S)-50 - (End - S),"Last-Modified: %s\n",
93bf083d AL	179	TimeRFC1123(Res.LastModified).c_str());
	180
	181	if (Res.MD5Sum.empty() == false)
8b067c22	182	End += snprintf(End,sizeof(S)-50 - (End - S),"MD5-Hash: %s\n",Res.MD5Sum.c_str());
a7c835af AL	183	if (Res.SHA1Sum.empty() == false)
a7c835af AL	184	End += snprintf(End,sizeof(S)-50 - (End - S),"SHA1-Hash: %s\n",Res.SHA1Sum.c_str());
7db98ffc MZ	185	if (Res.GPGVOutput.size() > 0)
	186	End += snprintf(End,sizeof(S)-50 - (End - S),"GPGVOutput:\n");
	187	for (vector<string>::iterator I = Res.GPGVOutput.begin();
	188	I != Res.GPGVOutput.end(); I++)
	189	End += snprintf(End,sizeof(S)-50 - (End - S), " %s\n", (*I).c_str());
93bf083d	190
b98f2859	191	if (Res.ResumePoint != 0)
8b067c22	192	End += snprintf(End,sizeof(S)-50 - (End - S),"Resume-Point: %lu\n",
b98f2859 AL	193	Res.ResumePoint);
b98f2859 AL	194
93bf083d AL	195	if (Res.IMSHit == true)
	196	strcat(End,"IMS-Hit: true\n");
	197	End = S + strlen(S);
	198
	199	if (Alt != 0)
	200	{
	201	if (Alt->Filename.empty() == false)
8b067c22	202	End += snprintf(End,sizeof(S)-50 - (End - S),"Alt-Filename: %s\n",Alt->Filename.c_str());
93bf083d AL	203
93bf083d AL	204	if (Alt->Size != 0)
8b067c22	205	End += snprintf(End,sizeof(S)-50 - (End - S),"Alt-Size: %lu\n",Alt->Size);
93bf083d AL	206
93bf083d AL	207	if (Alt->LastModified != 0)
8b067c22	208	End += snprintf(End,sizeof(S)-50 - (End - S),"Alt-Last-Modified: %s\n",
93bf083d AL	209	TimeRFC1123(Alt->LastModified).c_str());
	210
	211	if (Alt->MD5Sum.empty() == false)
8b067c22	212	End += snprintf(End,sizeof(S)-50 - (End - S),"Alt-MD5-Hash: %s\n",
93bf083d	213	Alt->MD5Sum.c_str());
a7c835af AL	214	if (Alt->SHA1Sum.empty() == false)
	215	End += snprintf(End,sizeof(S)-50 - (End - S),"Alt-SHA1-Hash: %s\n",
	216	Alt->SHA1Sum.c_str());
93bf083d AL	217
	218	if (Alt->IMSHit == true)
	219	strcat(End,"Alt-IMS-Hit: true\n");
	220	}
	221
	222	strcat(End,"\n");
	223	if (write(STDOUT_FILENO,S,strlen(S)) != (signed)strlen(S))
	224	exit(100);
be4401bf AL	225
	226	// Dequeue
	227	FetchItem *Tmp = Queue;
	228	Queue = Queue->Next;
	229	delete Tmp;
5cb5d8dc AL	230	if (Tmp == QueueBack)
5cb5d8dc AL	231	QueueBack = Queue;
93bf083d AL	232	}
93bf083d AL	233	/}}}/
f46e7681 AL	234	// AcqMethod::MediaFail - Syncronous request for new media /{{{/
	235	// ---------------------------------------------------------------------
	236	/* This sends a 403 Media Failure message to the APT and waits for it
	237	to be ackd */
018f1533	238	bool pkgAcqMethod::MediaFail(string Required,string Drive)
f46e7681 AL	239	{
	240	char S[1024];
	241	snprintf(S,sizeof(S),"403 Media Failure\nMedia: %s\nDrive: %s\n\n",
	242	Required.c_str(),Drive.c_str());
	243
	244	if (write(STDOUT_FILENO,S,strlen(S)) != (signed)strlen(S))
	245	exit(100);
	246
	247	vector<string> MyMessages;
	248
	249	/* Here we read messages until we find a 603, each non 603 message is
	250	appended to the main message list for later processing */
	251	while (1)
	252	{
	253	if (WaitFd(STDIN_FILENO) == false)
76d97c26	254	return false;
f46e7681 AL	255
f46e7681 AL	256	if (ReadMessages(STDIN_FILENO,MyMessages) == false)
76d97c26 AL	257	return false;
76d97c26 AL	258
f46e7681 AL	259	string Message = MyMessages.front();
	260	MyMessages.erase(MyMessages.begin());
	261
	262	// Fetch the message number
	263	char *End;
	264	int Number = strtol(Message.c_str(),&End,10);
	265	if (End == Message.c_str())
	266	{
	267	cerr << "Malformed message!" << endl;
	268	exit(100);
	269	}
	270
	271	// Change ack
	272	if (Number == 603)
	273	{
76d97c26	274	while (MyMessages.empty() == false)
f46e7681 AL	275	{
	276	Messages.push_back(MyMessages.front());
	277	MyMessages.erase(MyMessages.begin());
	278	}
542ec555	279
76d97c26	280	return !StringToBool(LookupTag(Message,"Fail"),false);
f46e7681 AL	281	}
	282
	283	Messages.push_back(Message);
	284	}
	285	}
	286	/}}}/
93bf083d AL	287	// AcqMethod::Configuration - Handle the configuration message /{{{/
	288	// ---------------------------------------------------------------------
	289	/* This parses each configuration entry and puts it into the _config
	290	Configuration class. */
	291	bool pkgAcqMethod::Configuration(string Message)
	292	{
	293	::Configuration &Cnf = *_config;
	294
b4fc9b6f AL	295	const char *I = Message.c_str();
b4fc9b6f AL	296	const char *MsgEnd = I + Message.length();
93bf083d AL	297
93bf083d AL	298	unsigned int Length = strlen("Config-Item");
b4fc9b6f	299	for (; I + Length < MsgEnd; I++)
93bf083d AL	300	{
	301	// Not a config item
	302	if (I[Length] != ':' \|\| stringcasecmp(I,I+Length,"Config-Item") != 0)
	303	continue;
	304
	305	I += Length + 1;
	306
b4fc9b6f	307	for (; I < MsgEnd && *I == ' '; I++);
93bf083d	308	const char *Equals = I;
b4fc9b6f	309	for (; Equals < MsgEnd && *Equals != '='; Equals++);
93bf083d	310	const char *End = Equals;
b4fc9b6f	311	for (; End < MsgEnd && *End != '\n'; End++);
93bf083d AL	312	if (End == Equals)
	313	return false;
	314
6d5dd02a AL	315	Cnf.Set(DeQuoteString(string(I,Equals-I)),
6d5dd02a AL	316	DeQuoteString(string(Equals+1,End-Equals-1)));
93bf083d AL	317	I = End;
	318	}
	319
	320	return true;
	321	}
	322	/}}}/
	323	// AcqMethod::Run - Run the message engine /{{{/
	324	// ---------------------------------------------------------------------
8384ebdf AL	325	/* Fetch any messages and execute them. In single mode it returns 1 if
	326	there are no more available messages - any other result is a
	327	fatal failure code! */
be4401bf	328	int pkgAcqMethod::Run(bool Single)
93bf083d	329	{
93bf083d AL	330	while (1)
93bf083d AL	331	{
be4401bf	332	// Block if the message queue is empty
93bf083d	333	if (Messages.empty() == true)
be4401bf AL	334	{
	335	if (Single == false)
	336	if (WaitFd(STDIN_FILENO) == false)
8e5fc8f5	337	break;
92e889c8	338	if (ReadMessages(STDIN_FILENO,Messages) == false)
8e5fc8f5	339	break;
92e889c8 AL	340	}
92e889c8 AL	341
be4401bf AL	342	// Single mode exits if the message queue is empty
be4401bf AL	343	if (Single == true && Messages.empty() == true)
8384ebdf	344	return -1;
be4401bf	345
93bf083d AL	346	string Message = Messages.front();
	347	Messages.erase(Messages.begin());
	348
	349	// Fetch the message number
	350	char *End;
	351	int Number = strtol(Message.c_str(),&End,10);
	352	if (End == Message.c_str())
	353	{
	354	cerr << "Malformed message!" << endl;
	355	return 100;
	356	}
	357
	358	switch (Number)
8e5fc8f5	359	{
93bf083d AL	360	case 601:
	361	if (Configuration(Message) == false)
	362	return 100;
	363	break;
	364
	365	case 600:
be4401bf AL	366	{
	367	FetchItem *Tmp = new FetchItem;
	368
	369	Tmp->Uri = LookupTag(Message,"URI");
	370	Tmp->DestFile = LookupTag(Message,"FileName");
b98f2859 AL	371	if (StrToTime(LookupTag(Message,"Last-Modified"),Tmp->LastModified) == false)
b98f2859 AL	372	Tmp->LastModified = 0;
a72ace20	373	Tmp->IndexFile = StringToBool(LookupTag(Message,"Index-File"),false);
be4401bf AL	374	Tmp->Next = 0;
	375
	376	// Append it to the list
	377	FetchItem **I = &Queue;
92e889c8	378	for (; I != 0; I = &(I)->Next);
be4401bf	379	*I = Tmp;
5cb5d8dc AL	380	if (QueueBack == 0)
	381	QueueBack = Tmp;
	382
bfd22fc0	383	// Notify that this item is to be fetched.
be4401bf	384	if (Fetch(Tmp) == false)
93bf083d	385	Fail();
bfd22fc0	386
93bf083d AL	387	break;
	388	}
	389	}
	390	}
	391
8e5fc8f5	392	Exit();
93bf083d AL	393	return 0;
	394	}
	395	/}}}/
be4401bf AL	396	// AcqMethod::Log - Send a log message /{{{/
	397	// ---------------------------------------------------------------------
	398	/* */
	399	void pkgAcqMethod::Log(const char *Format,...)
	400	{
	401	string CurrentURI = "<UNKNOWN>";
	402	if (Queue != 0)
	403	CurrentURI = Queue->Uri;
	404
	405	va_list args;
	406	va_start(args,Format);
	407
	408	// sprintf the description
	409	char S[1024];
8b067c22	410	unsigned int Len = snprintf(S,sizeof(S)-4,"101 Log\nURI: %s\n"
be4401bf AL	411	"Message: ",CurrentURI.c_str());
be4401bf AL	412
8b067c22	413	vsnprintf(S+Len,sizeof(S)-4-Len,Format,args);
be4401bf AL	414	strcat(S,"\n\n");
	415
	416	if (write(STDOUT_FILENO,S,strlen(S)) != (signed)strlen(S))
	417	exit(100);
	418	}
	419	/}}}/
	420	// AcqMethod::Status - Send a status message /{{{/
	421	// ---------------------------------------------------------------------
	422	/* */
	423	void pkgAcqMethod::Status(const char *Format,...)
	424	{
	425	string CurrentURI = "<UNKNOWN>";
	426	if (Queue != 0)
	427	CurrentURI = Queue->Uri;
	428
	429	va_list args;
	430	va_start(args,Format);
	431
	432	// sprintf the description
	433	char S[1024];
8b067c22	434	unsigned int Len = snprintf(S,sizeof(S)-4,"102 Status\nURI: %s\n"
be4401bf AL	435	"Message: ",CurrentURI.c_str());
be4401bf AL	436
8b067c22	437	vsnprintf(S+Len,sizeof(S)-4-Len,Format,args);
be4401bf AL	438	strcat(S,"\n\n");
	439
	440	if (write(STDOUT_FILENO,S,strlen(S)) != (signed)strlen(S))
	441	exit(100);
	442	}
	443	/}}}/
	444
93bf083d AL	445	// AcqMethod::FetchResult::FetchResult - Constructor /{{{/
	446	// ---------------------------------------------------------------------
	447	/* */
93274b8d AL	448	pkgAcqMethod::FetchResult::FetchResult() : LastModified(0),
93274b8d AL	449	IMSHit(false), Size(0), ResumePoint(0)
93bf083d AL	450	{
	451	}
	452	/}}}/
a7c835af AL	453	// AcqMethod::FetchResult::TakeHashes - Load hashes /{{{/
	454	// ---------------------------------------------------------------------
	455	/* This hides the number of hashes we are supporting from the caller.
	456	It just deals with the hash class. */
	457	void pkgAcqMethod::FetchResult::TakeHashes(Hashes &Hash)
	458	{
	459	MD5Sum = Hash.MD5.Result();
	460	SHA1Sum = Hash.SHA1.Result();
	461	}
	462	/}}}/