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Verify remote FTL checksum (#5603)

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Dominik 2024-03-11 19:14:20 +01:00 committed by GitHub
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1 changed files with 40 additions and 25 deletions
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65
automated install/basic-install.sh
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@ -2002,9 +2002,11 @@ FTLcheckUpdate() {
local localSha1
if [[ ! "${ftlBranch}" == "master" ]]; then
# Check whether or not the binary for this FTL branch actually exists. If not, then there is no update!
# This is not the master branch
local path
path="${ftlBranch}/${binary}"
# Check whether or not the binary for this FTL branch actually exists. If not, then there is no update!
# shellcheck disable=SC1090
check_download_exists "$path"
local ret=$?
@ -2023,23 +2025,22 @@ FTLcheckUpdate() {
fi
if [[ ${ftlLoc} ]]; then
# We already have a pihole-FTL binary downloaded.
# Alt branches don't have a tagged version against them, so just confirm the checksum of the local vs remote to decide whether we download or not
remoteSha1=$(curl -sSL --fail "https://ftl.pi-hole.net/${ftlBranch}/${binary}.sha1" | cut -d ' ' -f 1)
localSha1=$(sha1sum "$(command -v pihole-FTL)" | cut -d ' ' -f 1)
if [[ "${remoteSha1}" != "${localSha1}" ]]; then
printf " %b Checksums do not match, downloading from ftl.pi-hole.net.\\n" "${INFO}"
return 0
else
printf " %b Checksum of installed binary matches remote. No need to download!\\n" "${INFO}"
return 1
fi
# We already have a pihole-FTL binary installed, check if it's the
# same as the remote one
# Alt branches don't have a tagged version against them, so just
# confirm the checksum of the local vs remote to decide whether we
# download or not
printf " %b FTL binary already installed. Confirming Checksum...\\n" "${INFO}"
checkSumFile="https://ftl.pi-hole.net/${ftlBranch}/${binary}.sha1"
# Continue further down...
else
return 0
fi
else
# This is the master branch
if [[ ${ftlLoc} ]]; then
# We already have a pihole-FTL binary installed, check if it's the
# same as the remote one
local FTLversion
FTLversion=$(/usr/bin/pihole-FTL tag)
local FTLlatesttag
@ -2053,25 +2054,39 @@ FTLcheckUpdate() {
# Check if the installed version matches the latest version
if [[ "${FTLversion}" != "${FTLlatesttag}" ]]; then
# If the installed version does not match the latest version,
# then download
return 0
else
printf " %b Latest FTL Binary already installed (%s). Confirming Checksum...\\n" "${INFO}" "${FTLlatesttag}"
remoteSha1=$(curl -sSL --fail "https://github.com/pi-hole/FTL/releases/download/${FTLversion%$'\r'}/${binary}.sha1" | cut -d ' ' -f 1)
localSha1=$(sha1sum "$(command -v pihole-FTL)" | cut -d ' ' -f 1)
if [[ "${remoteSha1}" != "${localSha1}" ]]; then
printf " %b Corruption detected...\\n" "${INFO}"
return 0
else
printf " %b Checksum correct. No need to download!\\n" "${INFO}"
return 1
fi
# If the installed version matches the latest version, then
# check the installed sha1sum of the binary vs the remote
# sha1sum. If they do not match, then download
printf " %b Latest FTL binary already installed (%s). Confirming Checksum...\\n" "${INFO}" "${FTLlatesttag}"
checkSumFile="https://github.com/pi-hole/FTL/releases/download/${FTLversion%$'\r'}/${binary}.sha1"
# Continue further down...
fi
else
return 0
fi
fi
# If we reach this point, we need to check the checksum of the local vs
# remote to decide whether we download or not
remoteSha1=$(curl -sSL --fail "${checkSumFile}" | cut -d ' ' -f 1)
localSha1=$(sha1sum "${ftlLoc}" | cut -d ' ' -f 1)
# Check we downloaded a valid checksum (no 404 or other error like
# no DNS resolution)
if [[ ! "${remoteSha1}" =~ ^[a-f0-9]{40}$ ]]; then
printf " %b Remote checksum not available, trying to redownload binary...\\n" "${CROSS}"
return 0
elif [[ "${remoteSha1}" != "${localSha1}" ]]; then
printf " %b Corruption detected, redownloading binary...\\n" "${CROSS}"
return 0
fi
printf " %b Checksum correct. No need to download!\\n" "${INFO}"
return 1
}
# Detect suitable FTL binary platform