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fix(source-read): reuse the canonical digest binding #6958

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Merged
loopx-agent merged 1 commit into from
Oct 20, 2026
Merged

fix(source-read): reuse the canonical digest binding #6958

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9 changes: 8 additions & 1 deletion loopx/extensions/public_source_reader.py
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Original file line number Diff line number Diff line change
Expand Up @@ -14,6 +14,7 @@
import os
from pathlib import Path
import re
import runpy
import socket
import ssl
import subprocess
Expand All @@ -23,6 +24,12 @@
from html.parser import HTMLParser
from urllib.parse import urljoin, urlsplit, urlunsplit

# Reuse the generated binding without adding this release to the isolated
# worker's module search path or requiring a site-installed LoopX package.
_BARE_SHA256_PATTERN = runpy.run_path(
str(Path(__file__).resolve().parents[1] / "control_plane" / "content_digest.py")
)["BARE_SHA256_PATTERN"]

MAX_BYTES = 4_000_000
MAX_TEXT = 100_000
MAX_IMAGES = 128
Expand Down Expand Up @@ -223,7 +230,7 @@ def _text_page_parameters(offset: int, expected_sha256: str | None) -> None:
if type(offset) is not int or not 0 <= offset <= MAX_BYTES:
raise ValueError("invalid text offset")
if ((expected_sha256 is not None and (not isinstance(expected_sha256, str)
or re.fullmatch(r"[0-9a-f]{64}", expected_sha256) is None))
or _BARE_SHA256_PATTERN.fullmatch(expected_sha256) is None))
or (offset > 0 and expected_sha256 is None)):
raise ValueError("text continuation requires the original source digest")

Expand Down
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