diff options
Diffstat (limited to 'eclass/verify-sig.eclass')
| -rw-r--r-- | eclass/verify-sig.eclass | 143 |
1 files changed, 112 insertions, 31 deletions
diff --git a/eclass/verify-sig.eclass b/eclass/verify-sig.eclass index 2bc5bd5ddba9..3693eb16ff41 100644 --- a/eclass/verify-sig.eclass +++ b/eclass/verify-sig.eclass @@ -20,7 +20,11 @@ # signatures to SRC_URI and set VERIFY_SIG_OPENPGP_KEY_PATH. The eclass # provides verify-sig USE flag to toggle the verification. # +# If you need to use signify, you may want to copy distfiles into WORKDIR to +# work around "Too many levels of symbolic links" error. +# @EXAMPLE: # Example use: +# # @CODE # inherit verify-sig # @@ -43,11 +47,30 @@ if [[ ! ${_VERIFY_SIG_ECLASS} ]]; then IUSE="verify-sig" -BDEPEND=" - verify-sig? ( - app-crypt/gnupg - >=app-portage/gemato-16 - )" +# @ECLASS-VARIABLE: VERIFY_SIG_METHOD +# @PRE_INHERIT +# @DESCRIPTION: +# Signature verification method to use. The allowed value are: +# +# - openpgp -- verify PGP signatures using app-crypt/gnupg (the default) +# - signify -- verify signatures with Ed25519 public key using app-crypt/signify +: ${VERIFY_SIG_METHOD:=openpgp} + +case ${VERIFY_SIG_METHOD} in + openpgp) + BDEPEND=" + verify-sig? ( + app-crypt/gnupg + >=app-portage/gemato-16 + )" + ;; + signify) + BDEPEND="verify-sig? ( app-crypt/signify )" + ;; + *) + die "${ECLASS}: unknown method '${VERIFY_SIG_METHOD}'" + ;; +esac # @ECLASS-VARIABLE: VERIFY_SIG_OPENPGP_KEY_PATH # @DEFAULT_UNSET @@ -55,6 +78,9 @@ BDEPEND=" # Path to key bundle used to perform the verification. This is required # when using default src_unpack. Alternatively, the key path can be # passed directly to the verification functions. +# +# NB: this variable is also used for non-OpenPGP signatures. The name +# contains "OPENPGP" for historical reasons. # @ECLASS-VARIABLE: VERIFY_SIG_OPENPGP_KEYSERVER # @DEFAULT_UNSET @@ -62,6 +88,8 @@ BDEPEND=" # Keyserver used to refresh keys. If not specified, the keyserver # preference from the key will be respected. If no preference # is specified by the key, the GnuPG default will be used. +# +# Supported for OpenPGP only. # @ECLASS-VARIABLE: VERIFY_SIG_OPENPGP_KEY_REFRESH # @USER_VARIABLE @@ -69,6 +97,8 @@ BDEPEND=" # Attempt to refresh keys via WKD/keyserver. Set it to "yes" # in make.conf to enable. Note that this requires working Internet # connection. +# +# Supported for OpenPGP only. : ${VERIFY_SIG_OPENPGP_KEY_REFRESH:=no} # @FUNCTION: verify-sig_verify_detached @@ -88,9 +118,14 @@ verify-sig_verify_detached() { local extra_args=() [[ ${VERIFY_SIG_OPENPGP_KEY_REFRESH} == yes ]] || extra_args+=( -R ) - [[ -n ${VERIFY_SIG_OPENPGP_KEYSERVER+1} ]] && extra_args+=( - --keyserver "${VERIFY_SIG_OPENPGP_KEYSERVER}" - ) + if [[ -n ${VERIFY_SIG_OPENPGP_KEYSERVER+1} ]]; then + [[ ${VERIFY_SIG_METHOD} == openpgp ]] || + die "${FUNCNAME}: VERIFY_SIG_OPENPGP_KEYSERVER is not supported" + + extra_args+=( + --keyserver "${VERIFY_SIG_OPENPGP_KEYSERVER}" + ) + fi # GPG upstream knows better than to follow the spec, so we can't # override this directory. However, there is a clean fallback @@ -100,9 +135,17 @@ verify-sig_verify_detached() { local filename=${file##*/} [[ ${file} == - ]] && filename='(stdin)' einfo "Verifying ${filename} ..." - gemato gpg-wrap -K "${key}" "${extra_args[@]}" -- \ - gpg --verify "${sig}" "${file}" || - die "PGP signature verification failed" + case ${VERIFY_SIG_METHOD} in + openpgp) + gemato gpg-wrap -K "${key}" "${extra_args[@]}" -- \ + gpg --verify "${sig}" "${file}" || + die "PGP signature verification failed" + ;; + signify) + signify -V -p "${key}" -m "${file}" -x "${sig}" || + die "Signify signature verification failed" + ;; + esac } # @FUNCTION: verify-sig_verify_message @@ -124,9 +167,14 @@ verify-sig_verify_message() { local extra_args=() [[ ${VERIFY_SIG_OPENPGP_KEY_REFRESH} == yes ]] || extra_args+=( -R ) - [[ -n ${VERIFY_SIG_OPENPGP_KEYSERVER+1} ]] && extra_args+=( - --keyserver "${VERIFY_SIG_OPENPGP_KEYSERVER}" - ) + if [[ -n ${VERIFY_SIG_OPENPGP_KEYSERVER+1} ]]; then + [[ ${VERIFY_SIG_METHOD} == openpgp ]] || + die "${FUNCNAME}: VERIFY_SIG_OPENPGP_KEYSERVER is not supported" + + extra_args+=( + --keyserver "${VERIFY_SIG_OPENPGP_KEYSERVER}" + ) + fi # GPG upstream knows better than to follow the spec, so we can't # override this directory. However, there is a clean fallback @@ -136,30 +184,32 @@ verify-sig_verify_message() { local filename=${file##*/} [[ ${file} == - ]] && filename='(stdin)' einfo "Verifying ${filename} ..." - gemato gpg-wrap -K "${key}" "${extra_args[@]}" -- \ - gpg --verify --output="${output_file}" "${file}" || - die "PGP signature verification failed" + case ${VERIFY_SIG_METHOD} in + openpgp) + gemato gpg-wrap -K "${key}" "${extra_args[@]}" -- \ + gpg --verify --output="${output_file}" "${file}" || + die "PGP signature verification failed" + ;; + signify) + signify -V -e -p "${key}" -m "${output_file}" -x "${file}" || + die "Signify signature verification failed" + ;; + esac } -# @FUNCTION: verify-sig_verify_signed_checksums +# @FUNCTION: _gpg_verify_signed_checksums +# @INTERNAL # @USAGE: <checksum-file> <algo> <files> [<key-file>] # @DESCRIPTION: -# Verify the checksums for all files listed in the space-separated list -# <files> (akin to ${A}) using a PGP-signed <checksum-file>. <algo> -# specified the checksum algorithm (e.g. sha256). <key-file> can either -# be passed directly, or it defaults to VERIFY_SIG_OPENPGP_KEY_PATH. -# -# The function dies if PGP verification fails, the checksum file -# contains unsigned data, one of the files do not match checksums -# or are missing from the checksum file. -verify-sig_verify_signed_checksums() { +# GnuPG-specific function to verify a signed checksums list. +_gpg_verify_signed_checksums() { local checksum_file=${1} local algo=${2} local files=() read -r -d '' -a files <<<"${3}" local key=${4:-${VERIFY_SIG_OPENPGP_KEY_PATH}} - local chksum_prog chksum_len + case ${algo} in sha256) chksum_prog=sha256sum @@ -170,9 +220,6 @@ verify-sig_verify_signed_checksums() { ;; esac - [[ -n ${key} ]] || - die "${FUNCNAME}: no key passed and VERIFY_SIG_OPENPGP_KEY_PATH unset" - local checksum filename junk ret=0 count=0 while read -r checksum filename junk; do [[ ${#checksum} -eq ${chksum_len} ]] || continue @@ -194,6 +241,40 @@ verify-sig_verify_signed_checksums() { die "${FUNCNAME}: checksums for some of the specified files were missing" } +# @FUNCTION: verify-sig_verify_signed_checksums +# @USAGE: <checksum-file> <algo> <files> [<key-file>] +# @DESCRIPTION: +# Verify the checksums for all files listed in the space-separated list +# <files> (akin to ${A}) using a signed <checksum-file>. <algo> specifies +# the checksum algorithm (e.g. sha256). <key-file> can either be passed +# directly, or it defaults to VERIFY_SIG_OPENPGP_KEY_PATH. +# +# The function dies if signature verification fails, the checksum file +# contains unsigned data, one of the files do not match checksums or +# are missing from the checksum file. +verify-sig_verify_signed_checksums() { + local checksum_file=${1} + local algo=${2} + local files=() + read -r -d '' -a files <<<"${3}" + local key=${4:-${VERIFY_SIG_OPENPGP_KEY_PATH}} + + [[ -n ${key} ]] || + die "${FUNCNAME}: no key passed and VERIFY_SIG_OPENPGP_KEY_PATH unset" + + case ${VERIFY_SIG_METHOD} in + openpgp) + _gpg_verify_signed_checksums \ + "${checksum_file}" "${algo}" "${files[@]}" "${key}" + ;; + signify) + signify -C -p "${key}" \ + -x "${checksum_file}" "${files[@]}" || + die "Signify signature verification failed" + ;; + esac +} + # @FUNCTION: verify-sig_src_unpack # @DESCRIPTION: # Default src_unpack override that verifies signatures for all |