kevinveenbirkenbach/linux-image-manager
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Kevin Veen-Birkenbach
2025-03-22 11:42:13 +01:00
parent 94fdcf5758
commit e60b3cf2a7
3 changed files with 37 additions and 15 deletions
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30
scripts/image/setup.sh
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@@ -245,18 +245,28 @@ if [ -z "$image_checksum" ]; then
done
fi
if [[ -v image_checksum ]]
then
(info "Checking md5 checksum..." && echo "$image_checksum $image_path"| md5sum -c -) ||
(info "Checking sha1 checksum..." && echo "$image_checksum $image_path"| sha1sum -c -) ||
(info "Checking sha256 checksum..." && echo "$image_checksum $image_path"| sha256sum -c -) ||
error "Verification failed. HINT: Force the download of the image."
else
warning "Verification is not possible. No checksum is defined."
if [[ -v image_checksum ]]; then
info "A checksum is defined for the image."
info "Checksums verify file integrity to ensure that the file was not corrupted during download."
info "The script will try verifying the integrity using MD5, then SHA1, and finally SHA256 if needed."
info "Trying MD5 checksum verification..."
(info "Checking md5 checksum..." && echo "$image_checksum $image_path" | md5sum -c -) ||
(warning "MD5 verification failed. This may indicate data corruption." &&
info "Trying SHA1 checksum verification for a secondary integrity check..." &&
info "Checking sha1 checksum..." && echo "$image_checksum $image_path" | sha1sum -c -) ||
(warning "SHA1 verification failed. Attempting SHA256 verification for thoroughness." &&
info "SHA256 provides a more robust check and is used as a final integrity measure." &&
info "Checking sha256 checksum..." && echo "$image_checksum $image_path" | sha256sum -c -) ||
error "Verification failed. HINT: Force the download of the image."
else
warning "No checksum is defined. Skipping checksum verification."
fi
info "Verifying signature..."
info "Note: Checksums verify integrity but do not confirm authenticity."
info "Proceeding to signature verification, which ensures the file comes from a trusted source."
signature_download_url="$download_url.sig"
info "Attempting to download the image signature from: $signature_download_url"
info "Try to download image signature from $signature_download_url."
if wget -q --method=HEAD "$signature_download_url"; then
@@ -388,7 +398,7 @@ if [ "$transfer_image" = "y" ]
elif [ "${image_path: -4}" = ".iso" ]
then
info "Transfering .iso file..." &&
sudo dd if="$image_path" of="$device_path" bs="$OPTIMAL_BLOCKSIZE" conv=fsync status=progress &&
pv "$image_path" | sudo dd of="$device_path" bs="$OPTIMAL_BLOCKSIZE" conv=fsync &&
sync ||
error
elif [ "${image_path: -3}" = ".xz" ]