mirror of
https://github.com/pi-hole/pi-hole.git
synced 2025-07-27 23:54:06 +02:00
Remove os_check from install script
Signed-off-by: Christian König <github@yubiuser.dev>
This commit is contained in:
Christian König
parent
3cbaee7b76
commit
40da3a40ec
@ -227,176 +227,6 @@ is_command() {
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command -v "${check_command}" >/dev/null 2>&1
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}
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os_check_dig(){
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local protocol="$1"
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local domain="$2"
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local nameserver="$3"
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local response
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response="$(dig -"${protocol}" +short -t txt "${domain}" "${nameserver}" 2>&1
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echo $?
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)"
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echo "${response}"
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}
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os_check_dig_response(){
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# Checks the reply from the dig command to determine if it's a valid response
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local digReply="$1"
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local response
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# Dig returned 0 (success), so get the actual response, and loop through it to determine if the detected variables above are valid
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response="${digReply%%$'\n'*}"
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# If the value of ${response} is a single 0, then this is the return code, not an actual response.
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if [ "${response}" == 0 ]; then
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echo false
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else
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echo true
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fi
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}
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os_check() {
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if [ "$PIHOLE_SKIP_OS_CHECK" != true ]; then
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# This function gets a list of supported OS versions from a TXT record at versions.pi-hole.net
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# and determines whether or not the script is running on one of those systems
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local remote_os_domain valid_os valid_version valid_response detected_os detected_version display_warning cmdResult digReturnCode response
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local piholeNameserver="@ns1.pi-hole.net"
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remote_os_domain=${OS_CHECK_DOMAIN_NAME:-"versions.pi-hole.net"}
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detected_os=$(grep '^ID=' /etc/os-release | cut -d '=' -f2 | tr -d '"')
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detected_version=$(grep VERSION_ID /etc/os-release | cut -d '=' -f2 | tr -d '"')
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# Test via IPv4 and hardcoded nameserver ns1.pi-hole.net
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cmdResult=$(os_check_dig 4 "${remote_os_domain}" "${piholeNameserver}")
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# Gets the return code of the previous command (last line)
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digReturnCode="${cmdResult##*$'\n'}"
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if [ ! "${digReturnCode}" == "0" ]; then
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valid_response=false
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else
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valid_response=$(os_check_dig_response cmdResult)
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fi
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# Try again via IPv6 and hardcoded nameserver ns1.pi-hole.net
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if [ "$valid_response" = false ]; then
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unset valid_response
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unset cmdResult
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unset digReturnCode
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cmdResult=$(os_check_dig 6 "${remote_os_domain}" "${piholeNameserver}")
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# Gets the return code of the previous command (last line)
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digReturnCode="${cmdResult##*$'\n'}"
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if [ ! "${digReturnCode}" == "0" ]; then
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valid_response=false
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else
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valid_response=$(os_check_dig_response cmdResult)
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fi
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fi
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# Try again without hardcoded nameserver
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if [ "$valid_response" = false ]; then
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unset valid_response
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unset cmdResult
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unset digReturnCode
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cmdResult=$(os_check_dig 4 "${remote_os_domain}")
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# Gets the return code of the previous command (last line)
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digReturnCode="${cmdResult##*$'\n'}"
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if [ ! "${digReturnCode}" == "0" ]; then
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valid_response=false
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else
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valid_response=$(os_check_dig_response cmdResult)
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fi
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fi
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if [ "$valid_response" = false ]; then
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unset valid_response
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unset cmdResult
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unset digReturnCode
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cmdResult=$(os_check_dig 6 "${remote_os_domain}")
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# Gets the return code of the previous command (last line)
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digReturnCode="${cmdResult##*$'\n'}"
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if [ ! "${digReturnCode}" == "0" ]; then
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valid_response=false
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else
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valid_response=$(os_check_dig_response cmdResult)
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fi
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fi
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if [ "$valid_response" = true ]; then
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response="${cmdResult%%$'\n'*}"
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IFS=" " read -r -a supportedOS < <(echo "${response}" | tr -d '"')
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for distro_and_versions in "${supportedOS[@]}"; do
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distro_part="${distro_and_versions%%=*}"
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versions_part="${distro_and_versions##*=}"
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# If the distro part is a (case-insensitive) substring of the computer OS
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if [[ "${detected_os^^}" =~ ${distro_part^^} ]]; then
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valid_os=true
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IFS="," read -r -a supportedVer <<<"${versions_part}"
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for version in "${supportedVer[@]}"; do
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if [[ "${detected_version}" =~ $version ]]; then
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valid_version=true
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break
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fi
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done
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break
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fi
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done
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fi
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if [ "$valid_os" = true ] && [ "$valid_version" = true ] && [ "$valid_response" = true ]; then
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display_warning=false
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fi
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if [ "$display_warning" != false ]; then
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if [ "$valid_response" = false ]; then
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if [ "${digReturnCode}" -eq 0 ]; then
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errStr="dig succeeded, but response was blank. Please contact support"
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else
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errStr="dig failed with return code ${digReturnCode}"
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fi
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printf " %b %bRetrieval of supported OS list failed. %s. %b\\n" "${CROSS}" "${COL_LIGHT_RED}" "${errStr}" "${COL_NC}"
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printf " %bUnable to determine if the detected OS (%s %s) is supported%b\\n" "${COL_LIGHT_RED}" "${detected_os^}" "${detected_version}" "${COL_NC}"
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printf " Possible causes for this include:\\n"
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printf " - Firewall blocking DNS lookups from Pi-hole device to ns1.pi-hole.net\\n"
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printf " - DNS resolution issues of the host system\\n"
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printf " - Other internet connectivity issues\\n"
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else
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printf " %b %bUnsupported OS detected: %s %s%b\\n" "${CROSS}" "${COL_LIGHT_RED}" "${detected_os^}" "${detected_version}" "${COL_NC}"
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printf " If you are seeing this message and you do have a supported OS, please contact support.\\n"
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fi
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printf "\\n"
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printf " %bhttps://docs.pi-hole.net/main/prerequisites/#supported-operating-systems%b\\n" "${COL_LIGHT_GREEN}" "${COL_NC}"
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printf "\\n"
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printf " If you wish to attempt to continue anyway, you can try one of the following commands to skip this check:\\n"
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printf "\\n"
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printf " e.g: If you are seeing this message on a fresh install, you can run:\\n"
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printf " %bcurl -sSL https://install.pi-hole.net | sudo PIHOLE_SKIP_OS_CHECK=true bash%b\\n" "${COL_LIGHT_GREEN}" "${COL_NC}"
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printf "\\n"
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printf " If you are seeing this message after having run pihole -up:\\n"
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printf " %bsudo PIHOLE_SKIP_OS_CHECK=true pihole -r%b\\n" "${COL_LIGHT_GREEN}" "${COL_NC}"
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printf " (In this case, your previous run of pihole -up will have already updated the local repository)\\n"
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printf "\\n"
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printf " It is possible that the installation will still fail at this stage due to an unsupported configuration.\\n"
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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}"
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printf " %bhttps://discourse.pi-hole.net/c/bugs-problems-issues/community-help/%b\\n" "${COL_LIGHT_GREEN}" "${COL_NC}"
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printf "\\n"
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exit 1
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else
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printf " %b %bSupported OS detected%b\\n" "${TICK}" "${COL_LIGHT_GREEN}" "${COL_NC}"
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fi
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else
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printf " %b %bPIHOLE_SKIP_OS_CHECK env variable set to true - installer will continue%b\\n" "${INFO}" "${COL_LIGHT_GREEN}" "${COL_NC}"
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fi
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}
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# Compatibility
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package_manager_detect() {
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@ -2369,8 +2199,6 @@ main() {
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# Install Pi-hole dependencies
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install_dependent_packages
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# Check that the installed OS is officially supported - display warning if not
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os_check
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# Check if there is a usable FTL binary available on this architecture - do
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# this early on as FTL is a hard dependency for Pi-hole
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