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Commit Graph

30 Commits

Author SHA1 Message Date
Clément Bœsch
e66563aede Merge commit 'd860a3cc0a12360a92b9ffd179a0c34413beaf88'
* commit 'd860a3cc0a12360a92b9ffd179a0c34413beaf88':
  crypto: Add encryption support

See 00d4013d9f

Merged-by: Clément Bœsch <u@pkh.me>
2017-04-01 15:45:32 +02:00
Christian Suloway
d860a3cc0a crypto: Add encryption support
Signed-off-by: Christian Suloway <csuloway@globaleagleent.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
2016-11-17 19:19:55 +01:00
Simon Hailes
a13a81a0dc avformat/crypto: add seeking support on read
cyrpto allows reading of data which has been aes-128-cbc encrypted given a key and an iv. But it did not handle filetypes which require seeking... e.g. it failed on an encrypted .mp4 file.

example:
take 25.mp4 created with:
ffmpeg -f lavfi -i sine=frequency=1000:beep_factor=2:r=48000:duration=720.0 -f lavfi -i testsrc=duration=720.0:rate=25 -vcodec libx264 -cmp 22 -timecode 10:00:00:00 -r 25 -y out\25.mp4

encrypt with:
openssl enc -aes-128-cbc -K 12345678901234567890123456789012 -iv 12345678901234567890123456789012 -in 25.mp4 -out 25.enc
then to transcode in ffmpeg:
ffmpeg -key 12345678901234567890123456789012 -iv 12345678901234567890123456789012 -i crypto:25.enc -vcodec mpeg4 -r 25 -y 25dec.mp4

prior to this modification, the transcode would fail.

Note also:  crypto previously maked both reads and writes as streamed, which caused the whole file
to be read before the transcode started.  Now, for read only, if the underlying layer is not marked as streamed,
then crypto is not.  This should enable efficient reading of encrypted containers which require seeking.

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2016-08-30 17:14:28 +02:00
Simon Hailes
a2fcacc880 libavformat/crypto - encourage reads of 4096 bytes
the current implementation reads in chunks of 149x16=2384 bytes.
Seems more logical for it to read in chunks of 4096

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2016-08-30 17:10:11 +02:00
Derek Buitenhuis
f8e89d8a29 Merge commit 'fab8156b2f30666adabe227b3d7712fd193873b1'
* commit 'fab8156b2f30666adabe227b3d7712fd193873b1':
  avio: Copy URLContext generic options into child URLContexts

Merged-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
2016-04-21 15:55:09 +01:00
Martin Storsjö
fab8156b2f avio: Copy URLContext generic options into child URLContexts
Since all URLContexts have the same AVOptions, such AVOptions
will be applied on the outermost context only and removed from the
dict, while they probably make sense on all contexts.

This makes sure that rw_timeout gets propagated to the innermost
URLContext (to make sure it gets passed to the tcp protocol, when
opening a http connection for instance).

Alternatively, such matching options would be kept in the dict
and only removed after the ffurl_connect call.

Signed-off-by: Martin Storsjö <martin@martin.st>
2016-03-24 10:34:19 +02:00
Derek Buitenhuis
93629735d7 avformat: Add a protocol blacklisting API
Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
2016-03-04 16:13:42 +00:00
Derek Buitenhuis
9c75148e6e Merge commit '2758cdedfb7ac61f8b5e4861f99218b6fd43491d'
This commit also disables the async fate test, because it
used internal APIs in a non-kosher way, which no longer
exists.

* commit '2758cdedfb7ac61f8b5e4861f99218b6fd43491d':
  lavf: reorganize URLProtocols

Merged-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
2016-02-29 16:51:10 +00:00
Anton Khirnov
8c0ceafb0f urlprotocol: receive a list of protocols from the caller
This way, the decisions about which protocols are available for use in
any given situations can be delegated to the caller.
2016-02-22 11:45:31 +01:00
Anton Khirnov
2758cdedfb lavf: reorganize URLProtocols
Instead of a linked list constructed at av_register_all(), store them
in a constant array of pointers.

Since no registration is necessary now, this removes some global state
from lavf. This will also allow the urlprotocol layer caller to limit
the available protocols in a simple and flexible way in the following
commits.
2016-02-22 11:30:58 +01:00
Michael Niedermayer
fe3fed0b14 Update demuxers and protocols for protocol whitelist support
Reviewed-by: Andreas Cadhalpun <andreas.cadhalpun@googlemail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2016-02-02 04:16:50 +01:00
Michael Niedermayer
a0fe1a25fa Merge commit 'daf8cf358a098a903d59adb6c0d0cc3262a8c93e'
* commit 'daf8cf358a098a903d59adb6c0d0cc3262a8c93e':
  avformat: Don't anonymously typedef structs

Conflicts:
	libavformat/adtsenc.c
	libavformat/aiffenc.c
	libavformat/avidec.c
	libavformat/gif.c
	libavformat/iff.c
	libavformat/img2dec.c
	libavformat/jvdec.c
	libavformat/matroskadec.c
	libavformat/udp.c
	libavformat/wtvdec.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
2015-02-14 21:07:40 +01:00
Diego Biurrun
daf8cf358a avformat: Don't anonymously typedef structs 2015-02-14 10:13:47 -08:00
Michael Niedermayer
2d0117f816 avformat/crypto: fix key vs iv typo
Fixes Ticket 4167

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2014-12-09 19:58:56 +01:00
Michael Niedermayer
24e7e0237b avformat/crypto: Use av_memdup()
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2014-12-02 02:01:11 +01:00
Christian Suloway
00d4013d9f avformat/crypto: added encryption
Signed-off-by: Christian Suloway <csuloway@globaleagleent.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2014-12-02 01:46:10 +01:00
Thilo Borgmann
d814a839ac Reinstate proper FFmpeg license for all files. 2013-08-30 15:47:38 +00:00
Michael Niedermayer
f391e405df Merge commit 'e002e3291e6dc7953f843abf56fc14f08f238b21'
* commit 'e002e3291e6dc7953f843abf56fc14f08f238b21':
  Use the new aes/md5/sha/tree allocation functions
  avutil: Add functions for allocating opaque contexts for algorithms
  svq3: fix pointer type warning
  svq3: replace unsafe pointer casting with intreadwrite macros
  parseutils-test: various cleanups

Conflicts:
	doc/APIchanges
	libavcodec/svq3.c
	libavutil/parseutils.c
	libavutil/version.h

Merged-by: Michael Niedermayer <michaelni@gmx.at>
2012-10-12 14:52:34 +02:00
Martin Storsjö
e002e3291e Use the new aes/md5/sha/tree allocation functions
Signed-off-by: Martin Storsjö <martin@martin.st>
2012-10-11 23:35:28 +03:00
Duncan Salerno
f3f35f7430 crypto should allow passing of options to the underlying protocol via the url_open2 interface
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2012-10-09 22:52:25 +02:00
Martin Storsjö
12c8912de2 crypto: Remove a stray double space
Signed-off-by: Martin Storsjö <martin@martin.st>
2012-08-31 23:27:27 +02:00
Anton Khirnov
ddffc2fdc3 avio: add support for passing options to protocols.
Not used anywhere yet, support for passing options from avio_open() will
follow.
2011-11-13 13:14:39 +01:00
Martin Storsjö
6f1b7b3944 avio: Add an AVIOInterruptCB parameter to ffurl_open/ffurl_alloc
Change all uses of these function to pass the relevant
callback on.
2011-11-13 13:12:17 +01:00
Anton Khirnov
dc86ca1ab5 crypto: add decoding flag to options. 2011-11-10 11:37:38 +01:00
Martin Storsjö
eaa8c1f9fe crypto: Don't manually free memory allocated via AVOptions
Signed-off-by: Martin Storsjö <martin@martin.st>
2011-11-10 10:51:13 +02:00
Anton Khirnov
145f741e11 AVOptions: rename FF_OPT_TYPE_* => AV_OPT_TYPE_* 2011-10-12 16:51:16 +02:00
Etienne Buira
a71bcd1a7f crypto: Use av_freep instead of av_free
This fixes a potential double free.

Signed-off-by: Martin Storsjö <martin@martin.st>
2011-06-08 23:41:53 +03:00
Anton Khirnov
f0029cbcf6 lavf: use designated initializers for AVClasses. 2011-05-17 23:01:42 +02:00
Martin Storsjö
ac9cf2e5c4 crypto: Use av_freep instead of av_free
Using av_freep is generally good practice.

Signed-off-by: Martin Storsjö <martin@martin.st>
2011-04-24 21:30:03 +03:00
Martin Storsjö
6e4f70a8de Add a protocol handler for AES CBC decryption with PKCS7 padding
This can later be extended to support other AES bit sizes,
encryption, other crypto algorithms, reading the key from a URL, etc.

In order to use it, the key and initialization vector has to be
passed via AVOptions. Since such options can't be passed to
protocols from the command line, the protocol is currently
only for libavformat internal use.

Signed-off-by: Martin Storsjö <martin@martin.st>
2011-04-23 00:27:10 +03:00