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235 lines
8.6 KiB
235 lines
8.6 KiB
#!/bin/bash
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# LinuxGSM check_permissions.sh
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# Author: Daniel Gibbs
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# Contributors: http://linuxgsm.com/contrib
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# Website: https://linuxgsm.com
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# Description: Checks ownership & permissions of scripts, files and directories.
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functionselfname="$(basename "$(readlink -f "${BASH_SOURCE[0]}")")"
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fn_check_ownership() {
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if [ -f "${rootdir}/${selfname}" ]; then
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if [ "$(find "${rootdir}/${selfname}" -not -user "$(whoami)" | wc -l)" -ne "0" ]; then
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selfownissue=1
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fi
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fi
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if [ -d "${functionsdir}" ]; then
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if [ "$(find "${functionsdir}" -not -user "$(whoami)" | wc -l)" -ne "0" ]; then
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funcownissue=1
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fi
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fi
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if [ -d "${serverfiles}" ]; then
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if [ "$(find "${serverfiles}" -not -user "$(whoami)" | wc -l)" -ne "0" ]; then
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filesownissue=1
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fi
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fi
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if [ "${selfownissue}" == "1" ] || [ "${funcownissue}" == "1" ] || [ "${filesownissue}" == "1" ]; then
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fn_print_fail_nl "Ownership issues found"
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fn_script_log_fatal "Ownership issues found"
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fn_print_information_nl "The current user ($(whoami)) does not have ownership of the following files:"
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fn_script_log_info "The current user ($(whoami)) does not have ownership of the following files:"
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{
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echo -e "User\tGroup\tFile\n"
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if [ "${selfownissue}" == "1" ]; then
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find "${rootdir}/${selfname}" -not -user "$(whoami)" -printf "%u\t%g\t%p\n"
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fi
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if [ "${funcownissue}" == "1" ]; then
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find "${functionsdir}" -not -user "$(whoami)" -printf "%u\t%g\t%p\n"
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fi
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if [ "${filesownissue}" == "1" ]; then
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find "${serverfiles}" -not -user "$(whoami)" -printf "%u\t%g\t%p\n"
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fi
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} | column -s $'\t' -t | tee -a "${lgsmlog}"
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echo -e ""
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fn_print_information_nl "please see https://docs.linuxgsm.com/support/faq#fail-starting-game-server-permission-issues-found"
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fn_script_log "For more information, please see https://docs.linuxgsm.com/support/faq#fail-starting-game-server-permission-issues-found"
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if [ "${monitorflag}" == 1 ]; then
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alert="permissions"
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alert.sh
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fi
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core_exit.sh
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fi
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}
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fn_check_permissions() {
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if [ -d "${functionsdir}" ]; then
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if [ "$(find "${functionsdir}" -type f -not -executable | wc -l)" -ne "0" ]; then
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fn_print_fail_nl "Permissions issues found"
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fn_script_log_fatal "Permissions issues found"
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fn_print_information_nl "The following files are not executable:"
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fn_script_log_info "The following files are not executable:"
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{
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echo -e "File\n"
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find "${functionsdir}" -type f -not -executable -printf "%p\n"
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} | column -s $'\t' -t | tee -a "${lgsmlog}"
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if [ "${monitorflag}" == 1 ]; then
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alert="permissions"
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alert.sh
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fi
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core_exit.sh
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fi
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fi
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# Check rootdir permissions.
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if [ "${rootdir}" ]; then
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# Get permission numbers on directory under the form 775.
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rootdirperm=$(stat -c %a "${rootdir}")
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# Grab the first and second digit for user and group permission.
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userrootdirperm="${rootdirperm:0:1}"
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grouprootdirperm="${rootdirperm:1:1}"
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if [ "${userrootdirperm}" != "7" ] && [ "${grouprootdirperm}" != "7" ]; then
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fn_print_fail_nl "Permissions issues found"
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fn_script_log_fatal "Permissions issues found"
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fn_print_information_nl "The following directory does not have the correct permissions:"
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fn_script_log_info "The following directory does not have the correct permissions:"
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fn_script_log_info "${rootdir}"
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ls -l "${rootdir}"
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if [ "${monitorflag}" == 1 ]; then
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alert="permissions"
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alert.sh
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fi
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core_exit.sh
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fi
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fi
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# Check if executable is executable and attempt to fix it.
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# First get executable name.
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execname=$(basename "${executable}")
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if [ -f "${executabledir}/${execname}" ]; then
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# Get permission numbers on file under the form 775.
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execperm=$(stat -c %a "${executabledir}/${execname}")
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# Grab the first and second digit for user and group permission.
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userexecperm="${execperm:0:1}"
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groupexecperm="${execperm:1:1}"
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# Check for invalid user permission.
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if [ "${userexecperm}" == "0" ] || [ "${userexecperm}" == "2" ] || [ "${userexecperm}" == "4" ] || [ "${userexecperm}" == "6" ]; then
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# If user permission is invalid, then check for invalid group permissions.
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if [ "${groupexecperm}" == "0" ] || [ "${groupexecperm}" == "2" ] || [ "${groupexecperm}" == "4" ] || [ "${groupexecperm}" == "6" ]; then
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# If permission issues are found.
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fn_print_warn_nl "Permissions issue found"
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fn_script_log_warn "Permissions issue found"
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fn_print_information_nl "The following file is not executable:"
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ls -l "${executabledir}/${execname}"
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fn_script_log_info "The following file is not executable:"
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fn_script_log_info "${executabledir}/${execname}"
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fn_print_information_nl "Applying chmod u+x,g+x ${executabledir}/${execname}"
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fn_script_log_info "Applying chmod u+x,g+x ${execperm}"
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# Make the executable executable.
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chmod u+x,g+x "${executabledir}/${execname}"
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# Second check to see if it's been successfully applied.
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# Get permission numbers on file under the form 775.
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execperm=$(stat -c %a "${executabledir}/${execname}")
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# Grab the first and second digit for user and group permission.
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userexecperm="${execperm:0:1}"
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groupexecperm="${execperm:1:1}"
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if [ "${userexecperm}" == "0" ] || [ "${userexecperm}" == "2" ] || [ "${userexecperm}" == "4" ] || [ "${userexecperm}" == "6" ]; then
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if [ "${groupexecperm}" == "0" ] || [ "${groupexecperm}" == "2" ] || [ "${groupexecperm}" == "4" ] || [ "${groupexecperm}" == "6" ]; then
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# If errors are still found.
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fn_print_fail_nl "The following file could not be set executable:"
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ls -l "${executabledir}/${execname}"
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fn_script_log_warn "The following file could not be set executable:"
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fn_script_log_info "${executabledir}/${execname}"
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if [ "${monitorflag}" == "1" ]; then
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alert="permissions"
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alert.sh
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fi
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core_exit.sh
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fi
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fi
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fi
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fi
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fi
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}
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## The following fn_sys_perm_* functions checks for permission errors in /sys directory.
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# Checks for permission errors in /sys directory.
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fn_sys_perm_errors_detect() {
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# Reset test variables.
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sysdirpermerror="0"
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classdirpermerror="0"
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netdirpermerror="0"
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# Check permissions.
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# /sys, /sys/class and /sys/class/net should be readable & executable.
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if [ ! -r "/sys" ] || [ ! -x "/sys" ]; then
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sysdirpermerror="1"
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fi
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if [ ! -r "/sys/class" ] || [ ! -x "/sys/class" ]; then
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classdirpermerror="1"
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fi
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if [ ! -r "/sys/class/net" ] || [ ! -x "/sys/class/net" ]; then
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netdirpermerror="1"
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fi
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}
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# Display a message on how to fix the issue manually.
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fn_sys_perm_fix_manually_msg() {
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echo -e ""
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fn_print_information_nl "This error causes servers to fail starting properly"
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fn_script_log_info "This error causes servers to fail starting properly."
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echo -e " * To fix this issue, run the following command as root:"
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fn_script_log_info "To fix this issue, run the following command as root:"
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echo -e " chmod a+rx /sys /sys/class /sys/class/net"
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fn_script_log "chmod a+rx /sys /sys/class /sys/class/net"
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fn_sleep_time
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if [ "${monitorflag}" == 1 ]; then
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alert="permissions"
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alert.sh
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fi
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core_exit.sh
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}
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# Attempt to fix /sys related permission errors if sudo is available, exits otherwise.
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fn_sys_perm_errors_fix() {
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if sudo -n true > /dev/null 2>&1; then
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fn_print_dots "Automatically fixing /sys permissions"
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fn_script_log_info "Automatically fixing /sys permissions."
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if [ "${sysdirpermerror}" == "1" ]; then
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sudo chmod a+rx "/sys"
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fi
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if [ "${classdirpermerror}" == "1" ]; then
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sudo chmod a+rx "/sys/class"
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fi
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if [ "${netdirpermerror}" == "1" ]; then
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sudo chmod a+rx "/sys/class/net"
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fi
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# Run check again to see if it's fixed.
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fn_sys_perm_errors_detect
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if [ "${sysdirpermerror}" == "1" ] || [ "${classdirpermerror}" == "1" ] || [ "${netdirpermerror}" == "1" ]; then
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fn_print_error "Could not fix /sys permissions"
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fn_script_log_error "Could not fix /sys permissions."
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fn_sleep_time
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# Show the user how to fix.
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fn_sys_perm_fix_manually_msg
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else
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fn_print_ok_nl "Automatically fixing /sys permissions"
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fn_script_log_pass "Permissions in /sys fixed"
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fi
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else
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# Show the user how to fix.
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fn_sys_perm_fix_manually_msg
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fi
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}
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# Processes to the /sys related permission errors check & fix/info.
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fn_sys_perm_error_process() {
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fn_sys_perm_errors_detect
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# If any error was found.
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if [ "${sysdirpermerror}" == "1" ] || [ "${classdirpermerror}" == "1" ] || [ "${netdirpermerror}" == "1" ]; then
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fn_print_error_nl "Permission error(s) found in /sys"
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fn_script_log_error "Permission error(s) found in /sys"
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# Run the fix
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fn_sys_perm_errors_fix
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fi
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}
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# Run perm error detect & fix/alert functions on /sys directories.
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## Run checks.
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if [ "$(whoami)" != "root" ]; then
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fn_check_ownership
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fn_check_permissions
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if [ "${commandname}" == "START" ]; then
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fn_sys_perm_error_process
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fi
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fi
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