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4ef916da03 feat(pe): inspect import and delay-load tables (#6509)
* feat(pe): inspect import and delay-load tables

Add inspect_pe_imports / inspect-pe-imports to read PE32/PE32+ import
and delay-load directories without executing the image. The report keeps
DLL names, named and ordinal functions, ILT/IAT RVAs, and a pefile
import hash of the standard import table. A missing directory is
observed absence, not proof the image never imported APIs.

* fix(pe): default PE import fixture options

Allow peImportImage() without an argument so CLI and filesystem tests
can use the KERNEL32 sample without repeating an empty options object.

* test(pe): keep import path cases on the dedicated MCP contract

inspect_pe_imports already rejects relative MCP paths in its own
boundary test. Leave the shared absolute-path matrix to tools whose
handler issue projection matches that suite's expected shape.

* fix(native): index virtual-to-file mapping lookups

mappedFileOffset scans every mapping twice per span, so a parser that
translates one span per table entry costs sections x entries. Add
fileMappingLookup, which builds an O(n log n) interval index once and
answers each span in O(log n) with the same accept, reject and
translation results. A differential test checks it against
mappedFileOffset over randomized overlapping mappings and zero fills.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Ra7LM2NyQ7DumdssxbUq5g

* fix(pe): report partial import evidence and exact pefile hashes

- Withhold imphash with an explicit reason whenever the standard import
  table is partial (unreadable names or thunks, missing tables), or when
  pefile 2024.8.26 would hash a different row sequence: invalid or
  truncated names, ordinal 0, descriptors without functions, tables its
  bounds or repeat/spread heuristics discard, and its 8192-thunk import
  symbol cap. Delay-load issues do not withhold it.
- Hash ordinal imports with pefile's complete ordlookup tables and its
  ord<decimal> fallback instead of declining unmapped ordinals.
- Report a nonterminal descriptor whose FirstThunk is zero, and a
  delay-load descriptor whose IAT or INT RVA is zero, as malformed_entry
  partial coverage instead of a complete empty inventory.
- Directory evidence lists the file spans actually consumed for the
  descriptor array and terminator; discontiguous mappings produce
  separate spans and separate Evidence ranges.
- Carry exhausted limits as PeImportLimitFailure.limit and derive
  recovery from it; the fixed 16 MiB retained-text ceiling reports a
  fixed allowance instead of max_file_bytes advice.
- Translate RVAs through the indexed mapping lookup and yield with a
  cancellation check every 1024 table entries.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Ra7LM2NyQ7DumdssxbUq5g

* fix(pe): read only own ordinal tables for DLL names

DLL names such as constructor and __proto__ pass pefile's name rule but
resolved inherited object members, throwing before the ord<n> fallback.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Ra7LM2NyQ7DumdssxbUq5g

* fix(native): preserve PE import facts and prove hash compatibility

* test(native): verify PE import workflows and measured costs

* refactor(native): narrow PE facts across the container union

* docs(native): record integrated PE import validation

* fix(native): bound every PE import RVA span

* docs(native): measure RVA guard completed workflows

* fix(pe): reconcile import coverage with retained rows

* fix(pe): retain partial imports at descriptor mapping gaps

---------

Co-authored-by: Matt Van Horn <455140+mvanhorn@users.noreply.github.com>
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
Co-authored-by: gensokyo-dev <342580529+gensokyo-dev@users.noreply.github.com>
2026-10-24 11:44:12 +08:00

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