From 8515ea12d283632e7d0103286e679542d896058b Mon Sep 17 00:00:00 2001 From: Ludovic Courtès Date: Tue, 10 Nov 2020 17:49:14 +0100 Subject: gnu: audiofile: Shorten patch file names. At least 'audiofile-division-by-zero-BlockCodec-runPull.patch' could end up not being included in a tarball. * gnu/packages/patches/audiofile-Check-the-number-of-coefficients.patch: Rename to... * gnu/packages/patches/audiofile-check-number-of-coefficients.patch: ... this. * gnu/packages/patches/audiofile-division-by-zero-BlockCodec-runPull.patch: Rename to... * gnu/packages/patches/audiofile-division-by-zero.patch: ....this. * gnu/packages/patches/audiofile-signature-of-multiplyCheckOverflow.patch: Rename to... * gnu/packages/patches/audiofile-function-signature.patch: ... this. * gnu/packages/patches/audiofile-Fix-multiply-overflow-sfconvert.patch: Rename to.... * gnu/packages/patches/audiofile-multiply-overflow.patch: ... this. * gnu/packages/patches/audiofile-Fix-overflow-in-MSADPCM-decodeSam.patch: Rename to... * gnu/packages/patches/audiofile-overflow-in-MSADPCM.patch: ... this. * gnu/packages/audio.scm (audiofile)[source]: Adjust accordingly. * gnu/local.mk (dist_patch_DATA): Likewise. --- .../patches/audiofile-multiply-overflow.patch | 66 ++++++++++++++++++++++ 1 file changed, 66 insertions(+) create mode 100644 gnu/packages/patches/audiofile-multiply-overflow.patch (limited to 'gnu/packages/patches/audiofile-multiply-overflow.patch') diff --git a/gnu/packages/patches/audiofile-multiply-overflow.patch b/gnu/packages/patches/audiofile-multiply-overflow.patch new file mode 100644 index 0000000000..0f17140d6b --- /dev/null +++ b/gnu/packages/patches/audiofile-multiply-overflow.patch @@ -0,0 +1,66 @@ +From: Antonio Larrosa +Date: Mon, 6 Mar 2017 13:54:52 +0100 +Subject: Check for multiplication overflow in sfconvert + +Checks that a multiplication doesn't overflow when +calculating the buffer size, and if it overflows, +reduce the buffer size instead of failing. + +This fixes the 00192-audiofile-signintoverflow-sfconvert case +in #41 +--- + sfcommands/sfconvert.c | 34 ++++++++++++++++++++++++++++++++-- + 1 file changed, 32 insertions(+), 2 deletions(-) + +diff --git a/sfcommands/sfconvert.c b/sfcommands/sfconvert.c +index 80a1bc4..970a3e4 100644 +--- a/sfcommands/sfconvert.c ++++ b/sfcommands/sfconvert.c +@@ -45,6 +45,33 @@ void printusage (void); + void usageerror (void); + bool copyaudiodata (AFfilehandle infile, AFfilehandle outfile, int trackid); + ++int firstBitSet(int x) ++{ ++ int position=0; ++ while (x!=0) ++ { ++ x>>=1; ++ ++position; ++ } ++ return position; ++} ++ ++#ifndef __has_builtin ++#define __has_builtin(x) 0 ++#endif ++ ++int multiplyCheckOverflow(int a, int b, int *result) ++{ ++#if (defined __GNUC__ && __GNUC__ >= 5) || ( __clang__ && __has_builtin(__builtin_mul_overflow)) ++ return __builtin_mul_overflow(a, b, result); ++#else ++ if (firstBitSet(a)+firstBitSet(b)>31) // int is signed, so we can't use 32 bits ++ return true; ++ *result = a * b; ++ return false; ++#endif ++} ++ + int main (int argc, char **argv) + { + if (argc == 2) +@@ -323,8 +350,11 @@ bool copyaudiodata (AFfilehandle infile, AFfilehandle outfile, int trackid) + { + int frameSize = afGetVirtualFrameSize(infile, trackid, 1); + +- const int kBufferFrameCount = 65536; +- void *buffer = malloc(kBufferFrameCount * frameSize); ++ int kBufferFrameCount = 65536; ++ int bufferSize; ++ while (multiplyCheckOverflow(kBufferFrameCount, frameSize, &bufferSize)) ++ kBufferFrameCount /= 2; ++ void *buffer = malloc(bufferSize); + + AFframecount totalFrames = afGetFrameCount(infile, AF_DEFAULT_TRACK); + AFframecount totalFramesWritten = 0; -- cgit v1.2.3