Implementation class for FTP, HTTP and HTTPS MediaHandler using an external program (aria2c) to retrive files. More...

#include <MediaAria2c.h>

Inheritance diagram for zypp::media::MediaAria2c:

Classes
class	Callbacks

Public Member Functions
	MediaAria2c (const Url &url_r, const Pathname &attach_point_hint_r)
virtual	~MediaAria2c ()
Public Member Functions inherited from zypp::media::MediaCurl
	ZYPP_DECLARE_FLAGS (RequestOptions, RequestOption)
	MediaCurl (const Url &url_r, const Pathname &attach_point_hint_r)
virtual	~MediaCurl ()
TransferSettings &	settings ()
Public Member Functions inherited from zypp::media::MediaHandler
	MediaHandler (const Url &url_r, const Pathname &attach_point_r, const Pathname &urlpath_below_attachpoint_r, const bool does_download_r)
	If the concrete media handler provides a nonempty attach_point, it must be an existing directory.
virtual	~MediaHandler ()
	Contolling MediaAccess takes care, that attached media is released prior to deleting this.
bool	downloads () const
	Hint if files are downloaded or not.
std::string	protocol () const
	Protocol hint for MediaAccess.
Url	url () const
	Url used.
void	attach (bool next)
	Use concrete handler to attach the media.
virtual bool	isAttached () const
	True if media is attached.
Pathname	localRoot () const
	Return the local directory that corresponds to medias url, no matter if media isAttached or not.
Pathname	localPath (const Pathname &pathname) const
	Files provided will be available at 'localPath(filename)'.
void	disconnect ()
	Use concrete handler to isconnect media.
void	release (const std::string &ejectDev="")
	Use concrete handler to release the media.
void	provideFile (Pathname filename) const
	Use concrete handler to provide file denoted by path below 'localRoot'.
void	provideFileCopy (Pathname srcFilename, Pathname targetFilename) const
	Call concrete handler to provide a copy of a file under a different place in the file system (usually not under attach point) as a copy.
void	provideDir (Pathname dirname) const
	Use concrete handler to provide directory denoted by path below 'localRoot' (not recursive!).
void	provideDirTree (Pathname dirname) const
	Use concrete handler to provide directory tree denoted by path below 'localRoot' (recursive!!).
void	releaseFile (const Pathname &filename) const
	Remove filename below localRoot IFF handler downloads files to the local filesystem.
void	releaseDir (const Pathname &dirname) const
	Remove directory tree below localRoot IFF handler downloads files to the local filesystem.
void	releasePath (Pathname pathname) const
	Remove pathname below localRoot IFF handler downloads files to the local filesystem.
void	setDeltafile (const Pathname &filename=Pathname()) const
Pathname	deltafile () const
void	dirInfo (std::list< std::string > &retlist, const Pathname &dirname, bool dots=true) const
	Return content of directory on media via retlist.
void	dirInfo (filesystem::DirContent &retlist, const Pathname &dirname, bool dots=true) const
	Basically the same as dirInfo above.
bool	doesFileExist (const Pathname &filename) const
	check if a file exists
virtual bool	hasMoreDevices ()
	Check if the media has one more device available for attach(true).
virtual void	getDetectedDevices (std::vector< std::string > &devices, unsigned int &index) const
	Fill in a vector of detected ejectable devices and the index of the currently attached device within the vector.

Static Public Member Functions
static bool	existsAria2cmd ()
	check if aria2c command line is present in the system
Static Public Member Functions inherited from zypp::media::MediaCurl
static void	setCookieFile (const Pathname &)
Static Public Member Functions inherited from zypp::media::MediaHandler
static bool	setAttachPrefix (const Pathname &attach_prefix)
static std::string	getRealPath (const std::string &path)
static Pathname	getRealPath (const Pathname &path)

Protected Member Functions
virtual void	attachTo (bool next=false)
	Call concrete handler to attach the media.
virtual void	releaseFrom (const std::string &ejectDev)
	Call concrete handler to release the media.
virtual void	getFile (const Pathname &filename) const
	Call concrete handler to provide file below attach point.
virtual void	getDir (const Pathname &dirname, bool recurse_r) const
	Call concrete handler to provide directory content (not recursive!) below attach point.
virtual void	getDirInfo (std::list< std::string > &retlist, const Pathname &dirname, bool dots=true) const
	Call concrete handler to provide a content list of directory on media via retlist.
virtual void	getDirInfo (filesystem::DirContent &retlist, const Pathname &dirname, bool dots=true) const
	Basically the same as getDirInfo above.
virtual bool	getDoesFileExist (const Pathname &filename) const
	Repeatedly calls doGetDoesFileExist() until it successfully returns, fails unexpectedly, or user cancels the operation.
virtual bool	doGetDoesFileExist (const Pathname &filename) const
virtual void	disconnectFrom ()
virtual void	getFileCopy (const Pathname &srcFilename, const Pathname &targetFilename) const
virtual bool	checkAttachPoint (const Pathname &apoint) const
	Verify if the specified directory as attach point (root) as requires by the particular media handler implementation.
Protected Member Functions inherited from zypp::media::MediaCurl
Url	clearQueryString (const Url &url) const
virtual void	doGetFileCopy (const Pathname &srcFilename, const Pathname &targetFilename, callback::SendReport< DownloadProgressReport > &_report, RequestOptions options=OPTION_NONE) const
void	checkProtocol (const Url &url) const
	check the url is supported by the curl library
virtual void	setupEasy ()
	initializes the curl easy handle with the data from the url
Url	getFileUrl (const Pathname &filename) const
	concatenate the attach url and the filename to a complete download url
void	evaluateCurlCode (const zypp::Pathname &filename, CURLcode code, bool timeout) const
	Evaluates a curl return code and throws the right MediaException `filename` Filename being downloaded `code` Code curl returnes `timeout` Whether we reached timeout, which we need to differentiate in case the codes aborted-by-callback or timeout are returned by curl Otherwise we can't differentiate abort from timeout.
void	doGetFileCopyFile (const Pathname &srcFilename, const Pathname &dest, FILE *file, callback::SendReport< DownloadProgressReport > &_report, RequestOptions options=OPTION_NONE) const
Protected Member Functions inherited from zypp::media::MediaHandler
bool	dependsOnParent (MediaAccessId parentId, bool exactIdMatch)
	Check if the current media handler depends on an another handler specified by media access id.
bool	dependsOnParent ()
void	resetParentId ()
	Called in case, where the media manager takes over the destruction of the parent id (e.g.
Pathname	attachPoint () const
	Return the currently used attach point.
void	setAttachPoint (const Pathname &path, bool temp)
	Set a new attach point.
void	setAttachPoint (const AttachPointRef &ref)
	Set a (shared) attach point.
AttachPoint	attachPointHint () const
	Get the actual attach point hint.
void	attachPointHint (const Pathname &path, bool temp)
	Set the attach point hint as specified by the user.
Pathname	createAttachPoint () const
	Try to create a default / temporary attach point.
Pathname	createAttachPoint (const Pathname &attach_root) const
	Try to create a temporary attach point in specified root.
void	removeAttachPoint ()
	Remove unused attach point.
bool	isUseableAttachPoint (const Pathname &path, bool mtab=true) const
	Ask media manager, if the specified path is already used as attach point or if there are another attach points bellow of it.
std::string	mediaSourceName () const
	Get the media source name or an empty string.
void	setMediaSource (const MediaSourceRef &ref)
	Set new media source reference.
AttachedMedia	findAttachedMedia (const MediaSourceRef &media) const
	Ask the media manager if specified media source is already attached.
AttachedMedia	attachedMedia () const
	Returns the attached media.
bool	isSharedMedia () const
	Returns a hint if the media is shared or not.
bool	checkAttached (bool matchMountFs) const
	Check actual mediaSource attachment against the current mount table of the system.
void	forceRelaseAllMedia (bool matchMountFs)
	Call to this function will try to release all media matching the currenlty attached media source, that it is able to find in the mount table.
void	forceRelaseAllMedia (const MediaSourceRef &ref, bool matchMountFs)
virtual void	forceEject (const std::string &device)
	Call concrete handler to physically eject the media (i.e.
void	getDirectoryYast (std::list< std::string > &retlist, const Pathname &dirname, bool dots=true) const
	Retrieve and if available scan dirname/directory.yast.
void	getDirectoryYast (filesystem::DirContent &retlist, const Pathname &dirname, bool dots=true) const
	Retrieve and if available scan dirname/directory.yast.

Static Protected Member Functions
static const char *const	agentString ()
Static Protected Member Functions inherited from zypp::media::MediaCurl
static int	progressCallback (void *clientp, double dltotal, double dlnow, double ultotal, double ulnow)
Static Protected Member Functions inherited from zypp::media::MediaHandler
static bool	checkAttachPoint (const Pathname &apoint, bool empty_dir, bool writeable)
	Verify if the specified directory as attach point (root) using requested checks.

Private Member Functions
bool	authenticate (const std::string &availAuthTypes, bool firstTry) const
std::string	getAria2cVersion ()
	External process to get aria2c version.

Private Attributes
std::string	_currentCookieFile
std::string	_ca_path

Static Private Attributes
static Pathname	_cookieFile = "/var/lib/YaST2/cookies"
static std::string	_aria2cVersion = "WE DON'T KNOW ARIA2C VERSION"

Additional Inherited Members
Public Types inherited from zypp::media::MediaCurl
enum	RequestOption { OPTION_NONE = 0x0, OPTION_RANGE = 0x1, OPTION_HEAD = 0x02, OPTION_NO_IFMODSINCE = 0x04, OPTION_NO_REPORT_START = 0x08 }
Public Types inherited from zypp::media::MediaHandler
typedef shared_ptr< MediaHandler >	Ptr
typedef shared_ptr< const MediaHandler >	constPtr
Protected Attributes inherited from zypp::media::MediaCurl
CURL *	_curl
char	_curlError [CURL_ERROR_SIZE]
curl_slist *	_customHeaders
TransferSettings	_settings
Protected Attributes inherited from zypp::media::MediaHandler
const Url	_url
	Url to handle.
MediaAccessId	_parentId
	Access Id of media handler we depend on.

Detailed Description

Implementation class for FTP, HTTP and HTTPS MediaHandler using an external program (aria2c) to retrive files.

Author:: gfarrasb (gfarr.nosp@m.asb@.nosp@m.gmail.nosp@m..com); Duncan Mac-Vicar dmacv.nosp@m.icar.nosp@m.@suse.nosp@m..de

See also:: MediaHandler

Definition at line 31 of file MediaAria2c.h.

Constructor & Destructor Documentation

zypp::media::MediaAria2c::MediaAria2c	(	const Url &	url_r,
		const Pathname &	attach_point_hint_r
	)

Definition at line 233 of file MediaAria2c.cc.

virtual zypp::media::MediaAria2c::~MediaAria2c ( )

inlinevirtual

Definition at line 80 of file MediaAria2c.h.

Member Function Documentation

bool zypp::media::MediaAria2c::existsAria2cmd ( )

static

check if aria2c command line is present in the system

Definition at line 71 of file MediaAria2c.cc.

void zypp::media::MediaAria2c::attachTo ( bool next = false )

protectedvirtual

Call concrete handler to attach the media.

Asserted that not already attached, and attachPoint is a directory.

Parameters:

next	try next available device in turn until end of device list is reached (for media which are accessible through multiple devices like cdroms).

Exceptions:

MediaException

Reimplemented from zypp::media::MediaCurl.

Definition at line 242 of file MediaAria2c.cc.

void zypp::media::MediaAria2c::releaseFrom ( const std::string & ejectDev )

protectedvirtual

Call concrete handler to release the media.

If eject is true, and the media is used in one handler instance only, physically eject the media (i.e. CD-ROM).

Asserted that media is attached.

Parameters:

ejectDev Device to eject. None if empty.

Exceptions:

MediaException

Reimplemented from zypp::media::MediaCurl.

Definition at line 259 of file MediaAria2c.cc.

void zypp::media::MediaAria2c::getFile ( const Pathname & filename ) const

protectedvirtual

Call concrete handler to provide file below attach point.

Default implementation provided, that returns whether a file is located at 'localRoot + filename'.

Asserted that media is attached.

Exceptions:

MediaException

Reimplemented from zypp::media::MediaCurl.

Definition at line 264 of file MediaAria2c.cc.

void zypp::media::MediaAria2c::getDir	(	const Pathname &	dirname,
		bool	recurse_r
	)		const

protectedvirtual

Call concrete handler to provide directory content (not recursive!) below attach point.

Return E_not_supported_by_media if media does not support retrieval of directory content.

Default implementation provided, that returns whether a directory is located at 'localRoot + dirname'.

Asserted that media is attached.

Exceptions:

MediaException

Reimplemented from zypp::media::MediaCurl.

Definition at line 555 of file MediaAria2c.cc.

void zypp::media::MediaAria2c::getDirInfo	(	std::list< std::string > &	retlist,
		const Pathname &	dirname,
		bool	dots = `true`
	)		const

protectedvirtual

Call concrete handler to provide a content list of directory on media via retlist.

If dots is false entries starting with '.' are not reported.

Return E_not_supported_by_media if media does not support retrieval of directory content.

Default implementation provided, that returns the content of a directory at 'localRoot + dirnname' retrieved via 'readdir'.

Asserted that media is attached and retlist is empty.

Exceptions:

MediaException

Reimplemented from zypp::media::MediaCurl.

Definition at line 565 of file MediaAria2c.cc.

void zypp::media::MediaAria2c::getDirInfo	(	filesystem::DirContent &	retlist,
		const Pathname &	dirname,
		bool	dots = `true`
	)		const

protectedvirtual

Basically the same as getDirInfo above.

The content list is returned as filesystem::DirContent, which includes name and filetype of each directory entry. Retrieving the filetype usg. requires an additional ::stat call for each entry, thus it's more expensive than a simple readdir.

Asserted that media is attached and retlist is empty.

Exceptions:

MediaException

Reimplemented from zypp::media::MediaCurl.

Definition at line 571 of file MediaAria2c.cc.

bool zypp::media::MediaAria2c::getDoesFileExist ( const Pathname & filename ) const

protectedvirtual

Repeatedly calls doGetDoesFileExist() until it successfully returns, fails unexpectedly, or user cancels the operation.

This is used to handle authentication or similar retry scenarios on media level.

Reimplemented from zypp::media::MediaCurl.

Definition at line 545 of file MediaAria2c.cc.

bool zypp::media::MediaAria2c::doGetDoesFileExist ( const Pathname & filename ) const