mirror of https://github.com/t1meshift/os_labs.git
90 lines
2.5 KiB
Bash
Executable File
90 lines
2.5 KiB
Bash
Executable File
#!/usr/bin/env bash
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set -euo pipefail
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IFS=$'\n\t'
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function assert() {
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local checksum_prg="./lab6_check-$1.c_run"
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local input=$2
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local expected=$3
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local got
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echo "Testing $1 on string \`"$input"'..."
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got=$($checksum_prg -q <(printf "%s" "$input"))
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if diff -q <(echo "$got") <(echo "$expected") > /dev/null; then
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echo "OK!"
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else
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echo "Assertion failed!"
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echo "Expected: $expected"
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echo "Got: $got"
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fi
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}
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function run_bench() {
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local checksum_prg="./lab6_check-$1.c_run"
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echo "Benchmarking $1 with file $2..."
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$checksum_prg -b "$2"
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}
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pushd "$1" > /dev/null
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# Checked with https://www.scadacore.com/tools/programming-calculators/online-checksum-calculator/
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assert xor "123456789" "0x31"
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assert xor "444444444444444444444444444" "0x34"
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assert xor "4444444444444444444444444444" "0x00"
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assert xor "444444444444444444444444444\n" "0x06"
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assert xor "Test string" "0x03"
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assert xor "Try not to laugh1!%&<>z" "0x0d"
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# Checked with https://gchq.github.io/CyberChef/#recipe=Fletcher-16_Checksum()
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assert fletcher "44" "0x9c68"
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assert fletcher "Test string" "0x6e5b"
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assert fletcher "4444444444444444444444444444" "0xcab5"
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assert fletcher "444444444444444444444444444\n" "0x3f4c"
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assert fletcher "Try not to laugh1!%&<>z" "0x137c"
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assert fletcher "123456789" "0x1ede"
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# Checked with https://emn178.github.io/online-tools/crc16.html
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assert crc "123456789" "0xbb3d"
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assert crc "4444444444444444444444444444" "0x5d9d"
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assert crc "Test string" "0x5e4c"
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assert crc "Try not to laugh1!%&<>z" "0x6579"
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assert crc "tEsTTa" "0x0763"
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echo "Allocating 512B file with random data..."
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head -c 512 </dev/urandom >smallfile.bin
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run_bench xor smallfile.bin
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run_bench fletcher smallfile.bin
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run_bench crc smallfile.bin
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rm smallfile.bin
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echo "Allocating 64KB file with random data..."
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head -c 64K </dev/urandom >midfile.bin
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run_bench xor midfile.bin
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run_bench fletcher midfile.bin
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run_bench crc midfile.bin
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rm midfile.bin
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echo "Allocating 128MB file with random data..."
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head -c 128M </dev/urandom >bigfile.bin
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run_bench xor bigfile.bin
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run_bench fletcher bigfile.bin
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run_bench crc bigfile.bin
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rm bigfile.bin
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echo "Create & check checksum..."
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head -c 16385 <(yes 4) > testfile.bin
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head -c 32766 <(yes KRIPER2004) >> testfile.bin
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./lab6_create-csum.c_run testfile.bin testfile.bin.crc8maxim
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echo "This should be OK..."
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./lab6_check-csum.c_run testfile.bin testfile.bin.crc8maxim
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echo "Spoiling the file..."
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sed 's/4KRIP/HELLO/' testfile.bin > testfile_broken.bin
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echo "This should NOT be OK..."
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./lab6_check-csum.c_run testfile_broken.bin testfile.bin.crc8maxim
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popd > /dev/null |