mirror of
https://github.com/wolfcw/libfaketime.git
synced 2026-05-17 08:36:28 +03:00
61 lines
2.3 KiB
Bash
Executable File
61 lines
2.3 KiB
Bash
Executable File
#!/bin/sh
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FTPL="${FAKETIME_TESTLIB:-../src/libfaketime.so.1}"
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set -e
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error=0
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for iface in getrandom getentropy; do
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printf "Testing %s() interception...\n" "$iface"
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"./${iface}_test" > "${iface}.alone"
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LD_PRELOAD="$FTPL" "./${iface}_test" > "${iface}.preload"
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FAKERANDOM_SEED=0x12345678DEADBEEF LD_PRELOAD="$FTPL" "./${iface}_test" > "${iface}.preload.seed0"
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FAKERANDOM_SEED=0x12345678DEADBEEF LD_PRELOAD="$FTPL" "./${iface}_test" > "${iface}.preload.seed1"
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FAKERANDOM_SEED=0x0000000000000000 LD_PRELOAD="$FTPL" "./${iface}_test" > "${iface}.preload.seed2"
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if diff -u "${iface}.alone" "${iface}.preload" > /dev/null; then
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error=1
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printf >&2 '%s() without the LD_PRELOAD matches a run without LD_PRELOAD\n' "$iface"
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fi
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if diff -u "${iface}.preload" "${iface}.preload.seed0" > /dev/null; then
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error=2
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printf >&2 '%s() without a seed produced the same data as a run with a seed!\n' "$iface"
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fi
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if ! diff -u "${iface}.preload.seed0" "${iface}.preload.seed1"; then
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error=3
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printf >&2 '%s() with identical seeds differed!\n' "$iface"
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fi
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if diff -u "${iface}.preload.seed1" "${iface}.preload.seed2" >/dev/null; then
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error=4
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printf >&2 '%s() with different seeds produced the same data!\n' "$iface"
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fi
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rm -f "${iface}.alone" "${iface}.preload" "${iface}.preload.seed0" "${iface}.preload.seed1" "${iface}.preload.seed2"
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done
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printf 'testing shared object with getrandom() in library constructor\n'
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LD_LIBRARY_PATH=. ./use_lib_random
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printf 'now with LD_PRELOAD and FAKERANDOM_SEED\n'
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FAKERANDOM_SEED=0x0000000000000000 LD_PRELOAD="$FTPL" LD_LIBRARY_PATH=. ./use_lib_random
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# this demonstrates the crasher from https://github.com/wolfcw/libfaketime/issues/295
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printf 'now with LD_PRELOAD without FAKERANDOM_SEED\n'
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LD_PRELOAD="$FTPL" LD_LIBRARY_PATH=. ./use_lib_random
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FAKERANDOM_SEED=0xDEADBEEFDEADBEEF LD_PRELOAD="$FTPL" ./repeat_random 3 5 > repeat3x5
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FAKERANDOM_SEED=0xDEADBEEFDEADBEEF LD_PRELOAD="$FTPL" ./repeat_random 5 3 > repeat5x3
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if ! diff -u repeat3x5 repeat5x3; then
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error=5
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printf >&2 '5 calls of getrandom(3) did not produce the same stream as 3 calls of getrandom(5)\n'
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fi
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rm -f repeat3x5 repeat5x3
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if [ 0 = $error ]; then
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printf 'getrandom interception test successful.\n'
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fi
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exit $error
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