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Commit	Line	Data
	1	// -- mode: cpp; mode: fold --
	2	// Description /{{{/
	3	/* ######################################################################
	4
	5	Acquire Method - Method helper class + functions
	6
	7	These functions are designed to be used within the method task to
	8	ease communication with APT.
	9
	10	##################################################################### */
	11	/}}}/
	12
	13	/** \addtogroup acquire
	14	* @{
	15	*
	16	* \file acquire-method.h
	17	*/
	18
	19	#ifndef PKGLIB_ACQUIRE_METHOD_H
	20	#define PKGLIB_ACQUIRE_METHOD_H
	21
	22	#include <apt-pkg/hashes.h>
	23	#include <apt-pkg/macros.h>
	24
	25	#include <stdarg.h>
	26	#include <time.h>
	27
	28	#include <string>
	29	#include <vector>
	30
	31	#ifndef APT_8_CLEANER_HEADERS
	32	#include <apt-pkg/configuration.h>
	33	#include <apt-pkg/strutl.h>
	34	#endif
	35
	36	class pkgAcqMethod
	37	{
	38	protected:
	39
	40	struct FetchItem
	41	{
	42	FetchItem *Next;
	43
	44	std::string Uri;
	45	std::string DestFile;
	46	int DestFileFd;
	47	time_t LastModified;
	48	bool IndexFile;
	49	bool FailIgnore;
	50	HashStringList ExpectedHashes;
	51	// a maximum size we will download, this can be the exact filesize
	52	// for when we know it or a arbitrary limit when we don't know the
	53	// filesize (like a InRelease file)
	54	unsigned long long MaximumSize;
	55
	56	FetchItem();
	57	virtual ~FetchItem();
	58	private:
	59	void * const d;
	60	};
	61
	62	struct FetchResult
	63	{
	64	HashStringList Hashes;
	65	std::vector<std::string> GPGVOutput;
	66	time_t LastModified;
	67	bool IMSHit;
	68	std::string Filename;
	69	unsigned long long Size;
	70	unsigned long long ResumePoint;
	71
	72	void TakeHashes(class Hashes &Hash);
	73	FetchResult();
	74	virtual ~FetchResult();
	75	private:
	76	void * const d;
	77	};
	78
	79	// State
	80	std::vector<std::string> Messages;
	81	FetchItem *Queue;
	82	FetchItem *QueueBack;
	83	std::string FailReason;
	84	std::string UsedMirror;
	85	std::string IP;
	86
	87	// Handlers for messages
	88	virtual bool Configuration(std::string Message);
	89	virtual bool Fetch(FetchItem * /Item/) {return true;};
	90	virtual bool URIAcquire(std::string const &/Message/, FetchItem *Itm) { return Fetch(Itm); };
	91
	92	// Outgoing messages
	93	void Fail(bool Transient = false);
	94	inline void Fail(const char *Why, bool Transient = false) {Fail(std::string(Why),Transient);};
	95	virtual void Fail(std::string Why, bool Transient = false);
	96	virtual void URIStart(FetchResult &Res);
	97	virtual void URIDone(FetchResult &Res,FetchResult *Alt = 0);
	98
	99	bool MediaFail(std::string Required,std::string Drive);
	100	virtual void Exit() {};
	101
	102	void PrintStatus(char const * const header, const char* Format, va_list &args) const;
	103
	104	public:
	105	enum CnfFlags {SingleInstance = (1<<0),
	106	Pipeline = (1<<1), SendConfig = (1<<2),
	107	LocalOnly = (1<<3), NeedsCleanup = (1<<4),
	108	Removable = (1<<5)};
	109
	110	void Log(const char *Format,...);
	111	void Status(const char *Format,...);
	112
	113	void Redirect(const std::string &NewURI);
	114
	115	int Run(bool Single = false);
	116	inline void SetFailReason(std::string Msg) {FailReason = Msg;};
	117	inline void SetIP(std::string aIP) {IP = aIP;};
	118
	119	pkgAcqMethod(const char *Ver,unsigned long Flags = 0);
	120	virtual ~pkgAcqMethod();
	121	void DropPrivsOrDie();
	122	private:
	123	APT_HIDDEN void Dequeue();
	124	};
	125
	126	/** @} */
	127
	128	#endif