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197164bc94
Merge migrations 0007 and 0008 into a single 0007_savedata_integrity migration since neither has been released yet.
17 lines
778 B
SQL
17 lines
778 B
SQL
-- Savedata integrity protections: rotating backups + checksum verification.
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-- Rotating backup table (3 slots per character, time-gated).
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-- Prevents permanent data loss from save corruption by keeping recent snapshots.
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CREATE TABLE IF NOT EXISTS savedata_backups (
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char_id INTEGER NOT NULL REFERENCES characters(id) ON DELETE CASCADE,
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slot SMALLINT NOT NULL CHECK (slot BETWEEN 0 AND 2),
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savedata BYTEA NOT NULL,
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saved_at TIMESTAMPTZ NOT NULL DEFAULT now(),
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PRIMARY KEY (char_id, slot)
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);
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-- SHA-256 checksum column for savedata integrity verification.
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-- Stored as 32 raw bytes (not hex). NULL means no hash computed yet
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-- (backwards-compatible with existing data).
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ALTER TABLE characters ADD COLUMN IF NOT EXISTS savedata_hash BYTEA;
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