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26f121584a
fseek() succeeds beyond end of file, so a skippable frame whose declared size exceeds the remaining input was silently accepted when reading from a file (`lz4 -t`, `lz4 -d` and `lz4 --list` all reported success), while the same input from a pipe correctly failed with "Error 43 : cannot skip skippable area". fseek_u32() now seeks to the last byte of the area and reads it, so truncation is detected the same way for files and pipes.
30 lines
686 B
Bash
Executable File
30 lines
686 B
Bash
Executable File
#!/bin/sh
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SKIPFILE="goldenSamples/skip.bin"
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FPREFIX="tmp-lsk"
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set -e
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remove () {
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rm "$FPREFIX"*
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}
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trap remove EXIT
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set -x
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lz4 -dc $SKIPFILE
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lz4 -dc < $SKIPFILE
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printf "Hello from Valid Frame!\n" | lz4 -c > $FPREFIX.lz4
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cat $SKIPFILE $FPREFIX.lz4 $SKIPFILE | lz4 -dc
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# truncated skippable frame : must fail, whether input is a file or a pipe
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head -c 20 $SKIPFILE > $FPREFIX-trunc.lz4
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if lz4 -t $FPREFIX-trunc.lz4; then false; fi
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if lz4 -t < $FPREFIX-trunc.lz4; then false; fi
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if cat $FPREFIX-trunc.lz4 | lz4 -t; then false; fi
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if lz4 --list $FPREFIX-trunc.lz4; then false; fi
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# skippable frame ending exactly at end of file remains valid
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lz4 -t $SKIPFILE
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lz4 --list $SKIPFILE
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