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Commit	Line	Data
	1	// -- mode: cpp; mode: fold --
	2	// Description /{{{/
	3	// $Id: cdrom.cc,v 1.3 1998/12/05 01:45:21 jgg Exp $
	4	/* ######################################################################
	5
	6	CDROM URI method for APT
	7
	8	##################################################################### */
	9	/}}}/
	10	// Include Files /{{{/
	11	#include <apt-pkg/acquire-method.h>
	12	#include <apt-pkg/cdromutl.h>
	13	#include <apt-pkg/error.h>
	14	#include <apt-pkg/configuration.h>
	15	#include <apt-pkg/fileutl.h>
	16
	17	#include <sys/stat.h>
	18	#include <unistd.h>
	19	/}}}/
	20
	21	class CDROMMethod : public pkgAcqMethod
	22	{
	23	Configuration Database;
	24	string CurrentID;
	25
	26	virtual bool Fetch(FetchItem *Itm);
	27	string GetID(string Name);
	28
	29	public:
	30
	31	CDROMMethod();
	32	};
	33
	34	// CDROMMethod::CDROMethod - Constructor /{{{/
	35	// ---------------------------------------------------------------------
	36	/* */
	37	CDROMMethod::CDROMMethod() : pkgAcqMethod("1.0",SingleInstance \| LocalOnly \|
	38	SendConfig)
	39	{
	40	// Read the database
	41	string DFile = _config->FindFile("Dir::State::cdroms");
	42	if (FileExists(DFile) == true)
	43	{
	44	if (ReadConfigFile(Database,DFile) == false)
	45	{
	46	_error->Error("Unable to read the cdrom database %s",
	47	DFile.c_str());
	48	Fail();
	49	}
	50	}
	51	};
	52	/}}}/
	53	// CDROMMethod::GetID - Get the ID hash for /{{{/
	54	// ---------------------------------------------------------------------
	55	/* We search the configuration space for the name and then return the ID
	56	tag associated with it. */
	57	string CDROMMethod::GetID(string Name)
	58	{
	59	const Configuration::Item *Top = Database.Tree(0);
	60	for (; Top != 0;)
	61	{
	62	if (Top->Value == Name)
	63	return Top->Tag;
	64
	65	Top = Top->Next;
	66	}
	67
	68	return string();
	69	}
	70	/}}}/
	71	// CDROMMethod::Fetch - Fetch a file /{{{/
	72	// ---------------------------------------------------------------------
	73	/* */
	74	bool CDROMMethod::Fetch(FetchItem *Itm)
	75	{
	76	URI Get = Itm->Uri;
	77	string File = Get.Path;
	78	FetchResult Res;
	79
	80	/* All IMS queries are returned as a hit, CDROMs are readonly so
	81	time stamps never change */
	82	if (Itm->LastModified != 0)
	83	{
	84	Res.LastModified = Itm->LastModified;
	85	Res.IMSHit = true;
	86	URIDone(Res);
	87	return true;
	88	}
	89
	90	string ID = GetID(Get.Host);
	91
	92	// All non IMS queries for package files fail.
	93	if (Itm->IndexFile == true \|\| ID.empty() == false)
	94	{
	95	Fail("Please use apt-cdrom to make this CD recognized by APT."
	96	" apt-get update cannot be used to add new CDs");
	97	return true;
	98	}
	99
	100	// We already have a CD inserted, but it is the wrong one
	101	if (CurrentID.empty() == false && ID != CurrentID)
	102	{
	103	Fail("Wrong CD",true);
	104	return true;
	105	}
	106
	107	string CDROM = _config->FindDir("Acquire::cdrom::mount","/cdrom/");
	108	if (CDROM[0] == '.')
	109	CDROM= SafeGetCWD() + '/' + CDROM;
	110	string NewID;
	111	while (1)
	112	{
	113	if (IdentCdrom(CDROM,NewID) == false)
	114	return false;
	115
	116	// A hit
	117	if (NewID == ID)
	118	break;
	119
	120	UnmountCdrom(CDROM);
	121	if (MediaFail(Get.Host,CDROM) == false)
	122	{
	123	CurrentID = "FAIL";
	124	Fail("Wrong CD",true);
	125	return true;
	126	}
	127
	128	MountCdrom(CDROM);
	129	}
	130
	131	// ID matches
	132	if (NewID == ID)
	133	{
	134	Res.Filename = CDROM + File;
	135	if (FileExists(Res.Filename) == false)
	136	return _error->Error("File not found");
	137
	138	CurrentID = ID;
	139	Res.LastModified = Itm->LastModified;
	140	Res.IMSHit = true;
	141	URIDone(Res);
	142	return true;
	143	}
	144
	145	return _error->Error("CDROM not found");
	146	}
	147	/}}}/
	148
	149	int main()
	150	{
	151	CDROMMethod Mth;
	152	return Mth.Run();
	153	}