majic-scripts Changeset

Changeset - 5c11eb05a67d

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Branko Majic (branko) - 4 years ago 2020-06-29 04:17:35
branko@majic.rs

Added checksum checks for decrypted content. This information is used for tracking changes in decrypted files.

1 file changed with 27 insertions and 6 deletions:

openpgp/gitprotect.sh

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openpgp/gitprotect.sh

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@@ @@ -276,9 +276,20 @@ elif [[ $command = "encrypt" ]]; then @@
     # Encrypt every file from the decrypted sub-directory.
     while read filePath; do
         filename=$(basename "$filePath")
         cat "$filePath" | gpg2 --trust-model always --batch --homedir "$gnupgHome" \
             --armor "${recipients[@]}" --encrypt > "${filename}.gpg"
     done < <(find "decrypted/" -maxdepth 1 -type f)
         checksumFile="decrypted/.${filename}.sha256"
         # If the checksum file exists, then verify it. This way we detect if
         # decrypted file has been changed in any way since it has been
         # decrypted. We should skip unchanged files.
         if [[ -f $checksumFile ]] && sha256sum --quiet -c "$checksumFile" > /dev/null 2>&1; then
             echo "INFO: File decrypted/$filename doesn't seem to have been changed. Skipping."
         # The file was changed, so we need to encrypt new version of it.
         else
             cat "$filePath" | gpg2 --trust-model always --batch --homedir "$gnupgHome" \
                 --armor "${recipients[@]}" --encrypt > "${filename}.gpg"
             sha256sum "decrypted/$filename" > "decrypted/.${filename}.sha256"
         fi
     done < <(find "decrypted/" -maxdepth 1 -type f ! -name '.*.sha256')
 elif [[ $command = "decrypt" ]]; then
     gitprotectConfigured || exit "$ERR_NOCONFIG"
@@ @@ -288,11 +299,21 @@ elif [[ $command = "decrypt" ]]; then @@
     # Process each GnuPG-encrypted file.
     while read filePath; do
         filename=$(basename "$filePath" ".gpg")
         # Remove the "decrypted" file if decryption had failed.
         if ! gpg2 --quiet --decrypt "$filePath" > "decrypted/$filename"; then
         checksumFile="decrypted/.${filename}.sha256"
         # If the checksum file exists, and it does not match, the destination
         # file has been modified, so refuse to overwrite it.
         if [[ -f $checksumFile ]] && ! sha256sum --quiet -c "$checksumFile" > /dev/null 2>&1; then
             echo "ERROR: Current decrypted file 'decrypted/$filename' seems to have been modified since it was last decrypted."
         # Decrypt the file. If decryption has failed, we've ended-up with empty
         # file we need to remove.
         elif ! gpg2 --quiet --decrypt "$filePath" > "decrypted/$filename"; then
             echo "ERROR: Failed to decrypt file '$filePath'. No private key available." >&2
             rm "decrypted/$filename"
         # Create a new checksum file for checking if file had been changed by
         # user or not.
         else
             sha256sum "decrypted/$filename" > "decrypted/.${filename}.sha256"
         fi
     done < <(find . -maxdepth 1 -name '*.gpg')
 else

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