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feat(core/translations): add support for explicitly specifying blob version

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so that it's possible to re-sign translation blobs on a specific commit
for older firmware version
This commit is contained in:
matejcik 2024-03-25 16:18:17 +01:00 committed by matejcik
parent 229a06d3a2
commit 6918b16313
2 changed files with 145 additions and 61 deletions
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161
core/translations/cli.py
View File

@ -11,6 +11,7 @@ import click
from trezorlib import cosi, models, merkle_tree
from trezorlib._internal import translations
from trezorlib._internal.translations import VersionTuple
HERE = Path(__file__).parent.resolve()
LOG = logging.getLogger(__name__)
@ -36,6 +37,7 @@ class SignedInfo(t.TypedDict):
signature: str
datetime: str
commit: str
version: str
class UnsignedInfo(t.TypedDict):
@ -49,7 +51,7 @@ class SignatureFile(t.TypedDict):
history: list[SignedInfo]
def _version_from_version_h() -> translations.VersionTuple:
def _version_from_version_h() -> VersionTuple:
defines: t.Dict[str, int] = {}
with open(VERSION_H) as f:
for line in f:
@ -69,6 +71,10 @@ def _version_from_version_h() -> translations.VersionTuple:
)
def _version_str(version: VersionTuple) -> str:
return ".".join(str(v) for v in version)
def make_tree_info(merkle_root: bytes) -> UnsignedInfo:
now = datetime.datetime.utcnow()
commit = (
@ -81,8 +87,10 @@ def make_tree_info(merkle_root: bytes) -> UnsignedInfo:
)
def sign_info(info: UnsignedInfo, signature: bytes) -> SignedInfo:
return SignedInfo(signature=signature.hex(), **info)
def sign_info(
info: UnsignedInfo, signature: bytes, version: VersionTuple
) -> SignedInfo:
return SignedInfo(signature=signature.hex(), version=_version_str(version), **info)
def update_merkle_root(signature_file: SignatureFile, merkle_root: bytes) -> bool:
@ -102,53 +110,87 @@ def update_merkle_root(signature_file: SignatureFile, merkle_root: bytes) -> boo
return True
def generate_all_blobs(rewrite_version: bool) -> list[translations.TranslationsBlob]:
order = translations.order_from_json(json.loads((HERE / "order.json").read_text()))
fonts_dir = HERE / "fonts"
class TranslationsDir:
def __init__(self, path: Path = HERE):
self.path = path
self.order = translations.order_from_json(
json.loads((self.path / "order.json").read_text())
)
@property
def fonts_dir(self) -> Path:
return self.path / "fonts"
def _lang_path(self, lang: str) -> Path:
return self.path / f"{lang}.json"
def load_lang(self, lang: str) -> translations.JsonDef:
return json.loads(self._lang_path(lang).read_text())
def save_lang(self, lang: str, data: translations.JsonDef) -> None:
self._lang_path(lang).write_text(json.dumps(data, indent=2) + "\n")
def all_languages(self) -> t.Iterable[str]:
return (lang_file.stem for lang_file in self.path.glob("??.json"))
def generate_single_blob(
self,
lang: str,
model: models.TrezorModel,
version: VersionTuple | None,
write_version: bool = False,
) -> translations.TranslationsBlob:
blob_json = self.load_lang(lang)
blob_version = translations.version_from_json(blob_json["header"]["version"])
if version is None:
version = blob_version
if write_version and blob_version != version:
blob_json["header"]["version"] = _version_str(version)
self.save_lang(lang, blob_json)
return translations.blob_from_defs(
blob_json, self.order, model, version, self.fonts_dir
)
def generate_all_blobs(
self,
version: VersionTuple | t.Literal["auto"] | t.Literal["json"],
) -> list[translations.TranslationsBlob]:
current_version = _version_from_version_h()
current_version_str = ".".join(str(v) for v in current_version)
common_version = None
all_languages = [lang_file.stem for lang_file in HERE.glob("??.json")]
if version == "auto":
used_version = current_version
elif version == "json":
used_version = None
else:
used_version = version
all_blobs: list[translations.TranslationsBlob] = []
for lang in all_languages:
for lang in self.all_languages():
if lang == "en":
continue
for model in ALL_MODELS:
try:
blob_json = json.loads((HERE / f"{lang}.json").read_text())
blob_version = translations.version_from_json(
blob_json["header"]["version"]
)
if rewrite_version:
version = current_version
if blob_version != current_version:
blob_json["header"]["version"] = current_version_str
(HERE / f"{lang}.json").write_text(
json.dumps(blob_json, indent=2) + "\n"
)
else:
version = blob_version
blob = self.generate_single_blob(lang, model, used_version)
blob_version = blob.header.firmware_version
if common_version is None:
common_version = version
common_version = blob_version
elif blob_version != common_version:
raise ValueError(
f"Language {lang} has version {version} but expected {common_version}"
)
blob = translations.blob_from_defs(
blob_json, order, model, version, fonts_dir
f"Language {lang} has version {blob_version} but expected {common_version}"
)
all_blobs.append(blob)
except Exception as e:
import traceback
traceback.print_exc()
LOG.warning(f"Failed to build {lang} for {model.internal_name}: {e}")
LOG.warning(
f"Failed to build {lang} for {model.internal_name}: {e}"
)
continue
LOG.info(f"Built {lang} for {model.internal_name}")
@ -189,12 +231,21 @@ def cli() -> None:
@cli.command()
@click.option("--signed", is_flag=True, help="Generate signed blobs.")
def gen(signed: bool | None) -> None:
@click.option(
"--version", "version_str", help="Set the blob version independent of JSON data."
)
def gen(signed: bool | None, version_str: str | None) -> None:
"""Generate all language blobs for all models.
The generated blobs will be signed with the development keys.
"""
all_blobs = generate_all_blobs(rewrite_version=True)
if version_str is not None:
version = translations.version_from_json(version_str)
else:
version = "auto"
tdir = TranslationsDir()
all_blobs = tdir.generate_all_blobs(version)
tree = merkle_tree.MerkleTree(b.header_bytes for b in all_blobs)
root = tree.get_root_hash()
@ -216,7 +267,10 @@ def gen(signed: bool | None) -> None:
signature = cosi.sign_with_privkeys(root, PRIVATE_KEYS_DEV)
sigmask = 0b111
build_all_blobs(all_blobs, tree, sigmask, signature)
if update_merkle_root(signature_file, root):
if version_str is not None:
click.echo("Skipping Merkle root update because of explicit version.")
elif update_merkle_root(signature_file, root):
SIGNATURES_JSON.write_text(json.dumps(signature_file, indent=2) + "\n")
click.echo("Updated signatures.json")
else:
@ -224,12 +278,27 @@ def gen(signed: bool | None) -> None:
@cli.command()
def merkle_root() -> None:
@click.option(
"--version", "version_str", help="Set the blob version independent of JSON data."
)
def merkle_root(version_str: str | None) -> None:
"""Print the Merkle root of all language blobs."""
all_blobs = generate_all_blobs(rewrite_version=False)
if version_str is None:
version = "json"
else:
version = translations.version_from_json(version_str)
tdir = TranslationsDir()
all_blobs = tdir.generate_all_blobs(version)
tree = merkle_tree.MerkleTree(b.header_bytes for b in all_blobs)
root = tree.get_root_hash()
if version_str is not None:
# short-circuit: just print the Merkle root
click.echo(root.hex())
return
# we are using in-tree version. check in-tree merkle root
signature_file: SignatureFile = json.loads(SIGNATURES_JSON.read_text())
if signature_file["current"]["merkle_root"] != root.hex():
raise click.ClickException(
@ -245,23 +314,37 @@ def merkle_root() -> None:
@cli.command()
@click.argument("signature_hex")
@click.option("--force", is_flag=True, help="Write even if the signature is invalid.")
def sign(signature_hex: str, force: bool | None) -> None:
@click.option(
"--version", "version_str", help="Set the blob version independent of JSON data."
)
def sign(signature_hex: str, force: bool | None, version_str: str | None) -> None:
"""Insert a signature into language blobs."""
all_blobs = generate_all_blobs(rewrite_version=False)
if version_str is None:
version = "json"
else:
version = translations.version_from_json(version_str)
tdir = TranslationsDir()
all_blobs = tdir.generate_all_blobs(version)
tree = merkle_tree.MerkleTree(b.header_bytes for b in all_blobs)
root = tree.get_root_hash()
blob_version = all_blobs[0].header.firmware_version
signature_file: SignatureFile = json.loads(SIGNATURES_JSON.read_text())
if version_str is None:
# we are using in-tree version. check in-tree merkle root
if signature_file["current"]["merkle_root"] != root.hex():
raise click.ClickException(
f"Merkle root mismatch!\n"
f"Expected: {root.hex()}\n"
f"Stored in signatures.json: {signature_file['current']['merkle_root']}"
)
# else, proceed with the calculated Merkle root
# Update signature file data. It will be written only if the signature verifies.
tree_info = make_tree_info(root)
signed_info = sign_info(tree_info, bytes.fromhex(signature_hex))
signed_info = sign_info(tree_info, bytes.fromhex(signature_hex), blob_version)
signature_file["history"].insert(0, signed_info)
signature_bytes = bytes.fromhex(signature_hex)

3
core/translations/signatures.json
View File

@ -9,7 +9,8 @@
"merkle_root": "7393c46812b1bdf8789adcfde4feea951c7036c7524d9b38f64641620504898e",
"signature": "03ca77980a972b9ff9825a67d5be437f2588f095104fefc9d0415702f065fc063f9f30ce69768bf1b3c8ae7e93220c61f1e3a6d0d1cc52b8ddae6bd1766bd4f202",
"datetime": "2024-03-07T11:26:08.409760",
"commit": "45e8a842a31e62a6d43d7f6ccac62a45e1198ef0"
"commit": "45e8a842a31e62a6d43d7f6ccac62a45e1198ef0",
"version": "2.7.0.0"
}
]
}