goldsrc-cheat/inject.sh

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2023-07-19 14:13:24 -04:00
#!/bin/bash
pid=$(pidof "hl_linux")
libpath=$(realpath "libhlcheat.so")
if [ "$pid" == "" ]; then
echo "inject.sh: process not running."
exit 1
fi
# Used to echo the command. For debugging.
#set -x
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if [ "$1" == "unload" ]; then
sudo gdb -n -q -batch \
-ex "attach $pid" \
-ex "set \$dlopen = (void* (*)(char*, int))dlopen" \
-ex "set \$dlclose = (int (*)(void*))dlclose" \
-ex "set \$dlerror = (char* (*)(void))dlerror" \
\
-ex "set \$self = \$dlopen(\"$libpath\", 6)" \
-ex "call \$dlclose(\$self)" \
-ex "call \$dlclose(\$self)" \
\
-ex "call \$dlerror()" \
-ex "detach" \
-ex "quit"
exit 0
fi
if grep -q "$libpath" "/proc/$pid/maps"; then
echo -e "hl-cheat already loaded. Reloading...\n";
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# 0x2 -> RTLD_NOW
# 0x6 -> RTLD_LAZY | RTLD_NOLOAD
# For more info on the 3 mid lines, see self_unload() in main.c
sudo gdb -n -q -batch \
-ex "attach $pid" \
-ex "set \$dlopen = (void* (*)(char*, int))dlopen" \
-ex "set \$dlclose = (int (*)(void*))dlclose" \
-ex "set \$dlerror = (char* (*)(void))dlerror" \
\
-ex "set \$self = \$dlopen(\"$libpath\", 6)" \
-ex "call \$dlclose(\$self)" \
-ex "call \$dlclose(\$self)" \
\
-ex "call \$dlopen(\"$libpath\", 2)" \
-ex "call \$dlerror()" \
-ex "detach" \
-ex "quit"
else
sudo gdb -n -q -batch \
-ex "attach $pid" \
-ex "set \$dlopen = (void* (*)(char*, int))dlopen" \
-ex "set \$dlclose = (int (*)(void*))dlclose" \
-ex "set \$dlerror = (char* (*)(void))dlerror" \
-ex "call \$dlopen(\"$libpath\", 2)" \
-ex "call \$dlerror()" \
-ex "detach" \
-ex "quit"
fi
set +x
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echo -e "\nDone."