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

// -*- mode: cpp; mode: fold -*-
// Description								/*{{{*/
// $Id: acquire-method.cc,v 1.4 1998/11/05 07:21:38 jgg Exp $
/* ######################################################################

   Acquire Method

   ##################################################################### */
									/*}}}*/
// 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/fileutl.h>

#include <stdio.h>
									/*}}}*/

// 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 & 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");
   strcat(End,"\n");

   if (write(STDOUT_FILENO,S,strlen(S)) != (signed)strlen(S))
      exit(100);

   SetNonBlock(STDIN_FILENO,true);
   
   Queue = 0;
}
									/*}}}*/
// AcqMethod::Fail - A fetch has failed					/*{{{*/
// ---------------------------------------------------------------------
/* */
void pkgAcqMethod::Fail()
{
   string Err = "Undetermined Error";
   if (_error->empty() == false)
      _error->PopMessage(Err);   
   _error->Discard();
   Fail(Err);
}
									/*}}}*/
// AcqMethod::Fail - A fetch has failed					/*{{{*/
// ---------------------------------------------------------------------
/* */
void pkgAcqMethod::Fail(string Err)
{   
   char S[1024];
   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;
   }
   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);
}
									/*}}}*/
// 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) - (End - S),"Size: %u\n",Res.Size);
   
   if (Res.LastModified != 0)
      End += snprintf(End,sizeof(S) - (End - S),"Last-Modified: %s\n",
		      TimeRFC1123(Res.LastModified).c_str());
   
   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);
}
									/*}}}*/
// 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) - (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);
   
   if (Res.LastModified != 0)
      End += snprintf(End,sizeof(S) - (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());

   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) - (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);
      
      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());
      
      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;
}
									/*}}}*/
// 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.begin();
   
   unsigned int Length = strlen("Config-Item");
   for (; I + Length < Message.end(); I++)
   {
      // Not a config item
      if (I[Length] != ':' || stringcasecmp(I,I+Length,"Config-Item") != 0)
	 continue;
      
      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)
	 return false;
      
      Cnf.Set(string(I,Equals-I),string(Equals+1,End-Equals-1));
      I = End;
   }
   
   return true;
}
									/*}}}*/
// AcqMethod::Run - Run the message engine				/*{{{*/
// ---------------------------------------------------------------------
/* */
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)
	       return 0;
      
	 if (ReadMessages(STDIN_FILENO,Messages) == false)
	    return 0;
      }
            
      // Single mode exits if the message queue is empty
      if (Single == true && Messages.empty() == true)
	 return 0;
      
      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");
	    StrToTime(LookupTag(Message,"Last-Modified"),Tmp->LastModified);
	    Tmp->Next = 0;
	    
	    // Append it to the list
	    FetchItem **I = &Queue;
	    for (; *I != 0; I = &(*I)->Next);
	    *I = Tmp;

	    // Notify that this item is to be fetched.
	    if (Fetch(Tmp) == false)
	       Fail();
	    
	    break;					     
	 }   
      }      
   }

   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),"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);
}
									/*}}}*/
// 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),"101 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);
}
									/*}}}*/

// AcqMethod::FetchResult::FetchResult - Constructor			/*{{{*/
// ---------------------------------------------------------------------
/* */
pkgAcqMethod::FetchResult::FetchResult() : LastModified(0), 
                                   IMSHit(false), Size(0)
{
}
									/*}}}*/
Commit	Line	Data
93bf083d AL	1	// -- mode: cpp; mode: fold --
93bf083d AL	2	// Description /{{{/
bfd22fc0	3	// $Id: acquire-method.cc,v 1.4 1998/11/05 07:21:38 jgg Exp $
93bf083d AL	4	/* ######################################################################
	5
	6	Acquire Method
	7
	8	##################################################################### */
	9	/}}}/
	10	// Include Files /{{{/
	11	#ifdef __GNUG__
	12	#pragma implementation "apt-pkg/acquire-method.h"
	13	#endif
	14	#include <apt-pkg/acquire-method.h>
	15	#include <apt-pkg/error.h>
	16	#include <apt-pkg/configuration.h>
	17	#include <strutl.h>
	18	#include <apt-pkg/fileutl.h>
	19
	20	#include <stdio.h>
	21	/}}}/
	22
	23	// AcqMethod::pkgAcqMethod - Constructor /{{{/
	24	// ---------------------------------------------------------------------
	25	/* This constructs the initialization text */
	26	pkgAcqMethod::pkgAcqMethod(const char *Ver,unsigned long Flags)
	27	{
	28	char S[300] = "";
	29	char *End = S;
	30	strcat(End,"100 Capabilities\n");
	31	sprintf(End+strlen(End),"Version: %s\n",Ver);
	32
	33	if ((Flags & SingleInstance) == SingleInstance)
	34	strcat(End,"Single-Instance: true\n");
	35
	36	if ((Flags & PreScan) == PreScan)
	37	strcat(End,"Pre-Scan: true\n");
	38
	39	if ((Flags & Pipeline) == Pipeline)
	40	strcat(End,"Pipeline: true\n");
	41
	42	if ((Flags & SendConfig) == SendConfig)
	43	strcat(End,"Send-Config: true\n");
	44	strcat(End,"\n");
	45
	46	if (write(STDOUT_FILENO,S,strlen(S)) != (signed)strlen(S))
	47	exit(100);
be4401bf AL	48
be4401bf AL	49	SetNonBlock(STDIN_FILENO,true);
92e889c8 AL	50
92e889c8 AL	51	Queue = 0;
93bf083d AL	52	}
	53	/}}}/
	54	// AcqMethod::Fail - A fetch has failed /{{{/
	55	// ---------------------------------------------------------------------
	56	/* */
	57	void pkgAcqMethod::Fail()
	58	{
	59	string Err = "Undetermined Error";
	60	if (_error->empty() == false)
	61	_error->PopMessage(Err);
	62	_error->Discard();
	63	Fail(Err);
	64	}
	65	/}}}/
	66	// AcqMethod::Fail - A fetch has failed /{{{/
	67	// ---------------------------------------------------------------------
	68	/* */
	69	void pkgAcqMethod::Fail(string Err)
	70	{
	71	char S[1024];
be4401bf AL	72	if (Queue != 0)
	73	{
	74	snprintf(S,sizeof(S),"400 URI Failure\nURI: %s\n"
	75	"Message: %s\n\n",Queue->Uri.c_str(),Err.c_str());
	76
	77	// Dequeue
	78	FetchItem *Tmp = Queue;
	79	Queue = Queue->Next;
	80	delete Tmp;
	81	}
	82	else
	83	snprintf(S,sizeof(S),"400 URI Failure\nURI: <UNKNOWN>\n"
	84	"Message: %s\n\n",Err.c_str());
	85
93bf083d AL	86	if (write(STDOUT_FILENO,S,strlen(S)) != (signed)strlen(S))
	87	exit(100);
	88	}
	89	/}}}/
	90	// AcqMethod::URIStart - Indicate a download is starting /{{{/
	91	// ---------------------------------------------------------------------
	92	/* */
be4401bf	93	void pkgAcqMethod::URIStart(FetchResult &Res)
93bf083d	94	{
be4401bf AL	95	if (Queue == 0)
	96	abort();
	97
93bf083d AL	98	char S[1024] = "";
	99	char *End = S;
	100
be4401bf	101	End += snprintf(S,sizeof(S),"200 URI Start\nURI: %s\n",Queue->Uri.c_str());
93bf083d AL	102	if (Res.Size != 0)
	103	End += snprintf(End,sizeof(S) - (End - S),"Size: %u\n",Res.Size);
	104
	105	if (Res.LastModified != 0)
	106	End += snprintf(End,sizeof(S) - (End - S),"Last-Modified: %s\n",
	107	TimeRFC1123(Res.LastModified).c_str());
	108
be4401bf	109	if (Res.ResumePoint != 0)
93bf083d	110	End += snprintf(End,sizeof(S) - (End - S),"Resume-Point: %u\n",
be4401bf	111	Res.ResumePoint);
93bf083d AL	112
	113	strcat(End,"\n");
	114	if (write(STDOUT_FILENO,S,strlen(S)) != (signed)strlen(S))
	115	exit(100);
	116	}
	117	/}}}/
	118	// AcqMethod::URIDone - A URI is finished /{{{/
	119	// ---------------------------------------------------------------------
	120	/* */
	121	void pkgAcqMethod::URIDone(FetchResult &Res, FetchResult *Alt)
	122	{
be4401bf AL	123	if (Queue == 0)
	124	abort();
	125
93bf083d AL	126	char S[1024] = "";
	127	char *End = S;
	128
be4401bf	129	End += snprintf(S,sizeof(S),"201 URI Done\nURI: %s\n",Queue->Uri.c_str());
93bf083d AL	130
	131	if (Res.Filename.empty() == false)
	132	End += snprintf(End,sizeof(S) - (End - S),"Filename: %s\n",Res.Filename.c_str());
	133
	134	if (Res.Size != 0)
	135	End += snprintf(End,sizeof(S) - (End - S),"Size: %u\n",Res.Size);
	136
	137	if (Res.LastModified != 0)
	138	End += snprintf(End,sizeof(S) - (End - S),"Last-Modified: %s\n",
	139	TimeRFC1123(Res.LastModified).c_str());
	140
	141	if (Res.MD5Sum.empty() == false)
	142	End += snprintf(End,sizeof(S) - (End - S),"MD5Sum: %s\n",Res.MD5Sum.c_str());
	143
	144	if (Res.IMSHit == true)
	145	strcat(End,"IMS-Hit: true\n");
	146	End = S + strlen(S);
	147
	148	if (Alt != 0)
	149	{
	150	if (Alt->Filename.empty() == false)
	151	End += snprintf(End,sizeof(S) - (End - S),"Alt-Filename: %s\n",Alt->Filename.c_str());
	152
	153	if (Alt->Size != 0)
	154	End += snprintf(End,sizeof(S) - (End - S),"Alt-Size: %u\n",Alt->Size);
	155
	156	if (Alt->LastModified != 0)
	157	End += snprintf(End,sizeof(S) - (End - S),"Alt-Last-Modified: %s\n",
	158	TimeRFC1123(Alt->LastModified).c_str());
	159
	160	if (Alt->MD5Sum.empty() == false)
	161	End += snprintf(End,sizeof(S) - (End - S),"Alt-MD5Sum: %s\n",
	162	Alt->MD5Sum.c_str());
	163
	164	if (Alt->IMSHit == true)
	165	strcat(End,"Alt-IMS-Hit: true\n");
	166	}
	167
	168	strcat(End,"\n");
	169	if (write(STDOUT_FILENO,S,strlen(S)) != (signed)strlen(S))
	170	exit(100);
be4401bf AL	171
	172	// Dequeue
	173	FetchItem *Tmp = Queue;
	174	Queue = Queue->Next;
	175	delete Tmp;
93bf083d AL	176	}
	177	/}}}/
	178	// AcqMethod::Configuration - Handle the configuration message /{{{/
	179	// ---------------------------------------------------------------------
	180	/* This parses each configuration entry and puts it into the _config
	181	Configuration class. */
	182	bool pkgAcqMethod::Configuration(string Message)
	183	{
	184	::Configuration &Cnf = *_config;
	185
	186	const char *I = Message.begin();
	187
	188	unsigned int Length = strlen("Config-Item");
	189	for (; I + Length < Message.end(); I++)
	190	{
	191	// Not a config item
	192	if (I[Length] != ':' \|\| stringcasecmp(I,I+Length,"Config-Item") != 0)
	193	continue;
	194
	195	I += Length + 1;
	196
	197	for (; I < Message.end() && *I == ' '; I++);
	198	const char *Equals = I;
	199	for (; Equals < Message.end() && *Equals != '='; Equals++);
	200	const char *End = Equals;
	201	for (; End < Message.end() && *End != '\n'; End++);
	202	if (End == Equals)
	203	return false;
	204
	205	Cnf.Set(string(I,Equals-I),string(Equals+1,End-Equals-1));
	206	I = End;
	207	}
	208
	209	return true;
	210	}
	211	/}}}/
	212	// AcqMethod::Run - Run the message engine /{{{/
	213	// ---------------------------------------------------------------------
	214	/* */
be4401bf	215	int pkgAcqMethod::Run(bool Single)
93bf083d	216	{
93bf083d AL	217	while (1)
93bf083d AL	218	{
be4401bf	219	// Block if the message queue is empty
93bf083d	220	if (Messages.empty() == true)
be4401bf AL	221	{
	222	if (Single == false)
	223	if (WaitFd(STDIN_FILENO) == false)
	224	return 0;
be4401bf	225
92e889c8 AL	226	if (ReadMessages(STDIN_FILENO,Messages) == false)
	227	return 0;
	228	}
	229
be4401bf AL	230	// Single mode exits if the message queue is empty
	231	if (Single == true && Messages.empty() == true)
	232	return 0;
	233
93bf083d AL	234	string Message = Messages.front();
	235	Messages.erase(Messages.begin());
	236
	237	// Fetch the message number
	238	char *End;
	239	int Number = strtol(Message.c_str(),&End,10);
	240	if (End == Message.c_str())
	241	{
	242	cerr << "Malformed message!" << endl;
	243	return 100;
	244	}
	245
	246	switch (Number)
	247	{
	248	case 601:
	249	if (Configuration(Message) == false)
	250	return 100;
	251	break;
	252
	253	case 600:
be4401bf AL	254	{
	255	FetchItem *Tmp = new FetchItem;
	256
	257	Tmp->Uri = LookupTag(Message,"URI");
	258	Tmp->DestFile = LookupTag(Message,"FileName");
	259	StrToTime(LookupTag(Message,"Last-Modified"),Tmp->LastModified);
	260	Tmp->Next = 0;
	261
	262	// Append it to the list
	263	FetchItem **I = &Queue;
92e889c8	264	for (; I != 0; I = &(I)->Next);
be4401bf	265	*I = Tmp;
bfd22fc0 AL	266
bfd22fc0 AL	267	// Notify that this item is to be fetched.
be4401bf	268	if (Fetch(Tmp) == false)
93bf083d	269	Fail();
bfd22fc0	270
93bf083d AL	271	break;
	272	}
	273	}
	274	}
	275
	276	return 0;
	277	}
	278	/}}}/
be4401bf AL	279	// AcqMethod::Log - Send a log message /{{{/
	280	// ---------------------------------------------------------------------
	281	/* */
	282	void pkgAcqMethod::Log(const char *Format,...)
	283	{
	284	string CurrentURI = "<UNKNOWN>";
	285	if (Queue != 0)
	286	CurrentURI = Queue->Uri;
	287
	288	va_list args;
	289	va_start(args,Format);
	290
	291	// sprintf the description
	292	char S[1024];
	293	unsigned int Len = snprintf(S,sizeof(S),"101 Log\nURI: %s\n"
	294	"Message: ",CurrentURI.c_str());
	295
	296	vsnprintf(S+Len,sizeof(S)-Len,Format,args);
	297	strcat(S,"\n\n");
	298
	299	if (write(STDOUT_FILENO,S,strlen(S)) != (signed)strlen(S))
	300	exit(100);
	301	}
	302	/}}}/
	303	// AcqMethod::Status - Send a status message /{{{/
	304	// ---------------------------------------------------------------------
	305	/* */
	306	void pkgAcqMethod::Status(const char *Format,...)
	307	{
	308	string CurrentURI = "<UNKNOWN>";
	309	if (Queue != 0)
	310	CurrentURI = Queue->Uri;
	311
	312	va_list args;
	313	va_start(args,Format);
	314
	315	// sprintf the description
	316	char S[1024];
92e889c8	317	unsigned int Len = snprintf(S,sizeof(S),"101 Status\nURI: %s\n"
be4401bf AL	318	"Message: ",CurrentURI.c_str());
	319
	320	vsnprintf(S+Len,sizeof(S)-Len,Format,args);
	321	strcat(S,"\n\n");
	322
	323	if (write(STDOUT_FILENO,S,strlen(S)) != (signed)strlen(S))
	324	exit(100);
	325	}
	326	/}}}/
	327
93bf083d AL	328	// AcqMethod::FetchResult::FetchResult - Constructor /{{{/
	329	// ---------------------------------------------------------------------
	330	/* */
	331	pkgAcqMethod::FetchResult::FetchResult() : LastModified(0),
	332	IMSHit(false), Size(0)
	333	{
	334	}
	335	/}}}/
	336