41 lines
3.2 KiB
Markdown
41 lines
3.2 KiB
Markdown
# Capability Source Matrix
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Date: 2026-07-09
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Stage: C log-backed receive implementation
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Evidence index: `docs/source-discovery/2026-07-09-n12-pre-zyl-index.md`
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Schema notes: `docs/source-discovery/2026-07-09-n12-pre-zyl-schema-notes.md`
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## Source priority
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1. Existing bridge / API / local service.
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2. Local data, log, cache, or database source.
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3. UIA helper source through C# WinHelper.
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4. Network/protocol source.
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5. Mock source for tests only.
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## Matrix
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| MCP tool | Primary source | Fallback source | Evidence file | Decision status | Next implementation slice |
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| --- | --- | --- | --- | --- | --- |
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| `isphere_receive_messages` | decrypted `PacketReader.ProcessPacket` XMPP `<message>` stanzas via `internal/isphere.EncryptedPacketLogSource` | decrypted `Smark.SendReceive` transport stanzas; decrypted `SaveToDB` `Chat_OnMessageArrived` traces; wrapped `MsgLib.db` after DB wrapper is solved | `docs/source-discovery/2026-07-09-n12-pre-zyl-schema-notes.md#field-mapping-evidence` | C3 registered and unit-verified; default server source is empty until operator verification/loader wiring | fixture-backed operator verification and docs |
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| `isphere_search_contacts` | decrypted packet/send-receive JIDs and later roster stanzas from `Smark.SendReceive` | `MsgLib.db` contact/conversation tables after DB wrapper is solved; UIA helper source if display names are missing | `docs/source-discovery/2026-07-09-n12-pre-zyl-schema-notes.md#log-decryption-result` | candidate pending parser coverage | second |
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| `isphere_search_groups` | decrypted XMPP group/message stanzas if groupchat/group JIDs appear | `MsgLib.db` group/conversation tables after DB wrapper is solved; UIA helper source if group display names are missing | `docs/source-discovery/2026-07-09-n12-pre-zyl-schema-notes.md#field-mapping-evidence` | candidate pending group stanza evidence | third |
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| `isphere_receive_files` | decrypted `PacketReader.ProcessPacket` file-transfer message stanzas plus `zyl\importal\<hash>` cache mapping | decrypted `Smark.SendReceive` and `SaveToDB` traces for file-reference reconciliation | `docs/source-discovery/2026-07-09-n12-pre-zyl-schema-notes.md#field-mapping-evidence` | candidate pending cache-reference mapping | fourth |
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## Stage C entry rule
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Open implementation only for the selected row whose evidence maps concrete fields to the MCP output contract. After Stage B2, `isphere_receive_messages` satisfies the entry rule through decrypted `PacketReader.ProcessPacket` XML shape.
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## Stage C first slice recommendation
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Start Stage C with a narrow log-backed `isphere_receive_messages` source abstraction:
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1. Implement DES/CBC/PKCS7 line decryption for `IMPP.Util.Log.LogSecurityPolicy` format.
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2. Implement a parser for decrypted `PacketReader.ProcessPacket` XMPP `<message>` stanzas.
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3. Normalize only redacted test fixtures into message structs first.
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4. Add the MCP tool registration after the parser/source abstraction passes tests.
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## Deferred source work
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`MsgLib.db` is deferred because the selected DB files are not direct SQLite and did not decrypt to a SQLite header with the known log policy key. A separate DB-wrapper analysis node is required before using DB tables as a production read source.
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