@ -182,18 +182,27 @@ os_check() {
if [ " $PIHOLE_SKIP_OS_CHECK " != true ] ; then
# This function gets a list of supported OS versions from a TXT record at versions.pi-hole.net
# and determines whether or not the script is running on one of those systems
local remote_os_domain valid_os valid_version detected_os detected_version display_warning
local remote_os_domain valid_os valid_version valid_response detected_os detected_version display_warning cmdResult digReturnCode response
remote_os_domain = "versions.pi-hole.net"
detected_os = $( grep "\bID\b" /etc/os-release | cut -d '=' -f2 | tr -d '"' )
detected_version = $( grep VERSION_ID /etc/os-release | cut -d '=' -f2 | tr -d '"' )
IFS = " " read -r -a supportedOS < <( dig +short -t txt ${ remote_os_domain } @ns1.pi-hole.net | tr -d '"' )
cmdResult = " $( dig +short -t txt ${ remote_os_domain } @ns1.pi-hole.net 2>& 1; echo $? ) "
#Get the return code of the previous command (last line)
digReturnCode = " ${ cmdResult ##* $'\n' } "
if [ ${# supportedOS [@] } -eq 0 ] ; then
printf " %b %bRetrieval of supported OS failed. Please contact support. %b\\n" " ${ CROSS } " " ${ COL_LIGHT_RED } " " ${ COL_NC } "
exit 1
if [ ! " ${ digReturnCode } " = = "0" ] ; then
valid_response = false
else
# Dig returned 0 code, so get the actual response, and loop through it to determine if the detected variables above are valid
response = " ${ cmdResult %% $'\n' * } "
# If the value of ${result} is a single 0, then this is the return code, not the response. Response is blank
if [ " ${ response } " = = 0 ] ; then
valid_response = false
fi
IFS = " " read -r -a supportedOS < <( echo " ${ response } " | tr -d '"' )
for distro_and_versions in " ${ supportedOS [@] } "
do
distro_part = " ${ distro_and_versions %%=* } "
@ -214,23 +223,40 @@ os_check() {
done
fi
if [ " $valid_os " = true ] && [ " $valid_version " = true ] ; then
if [ " $valid_os " = true ] && [ " $valid_version " = true ] && [ ! " $valid_response " = false ] ; then
display_warning = false
fi
if [ " $display_warning " != false ] ; then
printf " %b %bUnsupported OS detected: %s %s%b\\n" " ${ CROSS } " " ${ COL_LIGHT_RED } " " ${ detected_os ^ } " " ${ detected_version } " " ${ COL_NC } "
printf " https://docs.pi-hole.net/main/prerequesites/#supported-operating-systems\\n"
if [ " $valid_response " = false ] ; then
if [ " ${ digReturnCode } " -eq 0 ] ; then
errStr = "dig suceeded, but response was blank. Please contact Support"
else
errStr = " dig failed with return code ${ digReturnCode } "
fi
printf " %b %bRetrieval of supported OS list failed. %s. %b\\n" " ${ CROSS } " " ${ COL_LIGHT_RED } " " ${ errStr } " " ${ COL_NC } "
printf " %bUnable to determine if the detected OS (%s %s) is supported%b\\n" " ${ COL_LIGHT_RED } " " ${ detected_os ^ } " " ${ detected_version } " " ${ COL_NC } "
else
printf " %b %bUnsupported OS detected: %s %s%b\\n" " ${ CROSS } " " ${ COL_LIGHT_RED } " " ${ detected_os ^ } " " ${ detected_version } " " ${ COL_NC } "
printf " If you are seeing this message and you do have a supported OS, please contact support.\\n"
fi
printf "\\n"
printf " %bhttps://docs.pi-hole.net/main/prerequesites/#supported-operating-systems%b\\n" " ${ COL_LIGHT_GREEN } " " ${ COL_NC } "
printf "\\n"
printf " If you wish to attempt to continue anyway, you can try one of the following commands to skip this check:\\n"
printf "\\n"
printf " e.g: If you are seeing this message on a fresh install, you can run:\\n"
printf " 'curl -sSL https://install.pi-hole.net | PIHOLE_SKIP_OS_CHECK=true sudo -E bash'\\n"
printf " %bcurl -sSL https://install.pi-hole.net | PIHOLE_SKIP_OS_CHECK=true sudo -E bash%b\\n" " ${ COL_LIGHT_GREEN } " " ${ COL_NC } "
printf "\\n"
printf " If you are seeing this message after having run pihole -up:\\n"
printf " 'PIHOLE_SKIP_OS_CHECK=true sudo -E pihole -r'\\n"
printf " %bPIHOLE_SKIP_OS_CHECK=true sudo -E pihole -r%b\\n" " ${ COL_LIGHT_GREEN } " " ${ COL_NC } "
printf " (In this case, your previous run of pihole -up will have already updated the local repository)\\n"
printf "\\n"
printf " It is possible that the installation will still fail at this stage due to an unsupported configuration.\\n"
printf " If that is the case, you can feel free to ask the community on Discourse with the %bCommunity Help%b category:\\n" " ${ COL_LIGHT_RED } " " ${ COL_NC } "
printf " https://discourse.pi-hole.net/c/bugs-problems-issues/community-help/\\n"
printf " %bhttps://discourse.pi-hole.net/c/bugs-problems-issues/community-help/%b\\n" " ${ COL_LIGHT_GREEN } " " ${ COL_NC } "
printf "\\n"
exit 1
else
Adam Warner
4 years ago