initial commit

2026-03-11 16:06:00 +01:00
parent b3c69053f6
commit 5fd80e6dd6
127 changed files with 39684 additions and 0 deletions
--- a/zaloha/schema.sql
+++ b/zaloha/schema.sql
@@ -0,0 +1,158 @@
+CREATE DATABASE IF NOT EXISTS encrypted_chat
+  CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
+
+USE encrypted_chat;
+
+-- Users: identity_key is Ed25519 (32B), rsa_public_key for login challenge only
+CREATE TABLE IF NOT EXISTS users (
+    id CHAR(36) NOT NULL PRIMARY KEY,
+    username VARCHAR(255) NOT NULL,
+    email VARCHAR(255) NOT NULL UNIQUE,
+    rsa_public_key TEXT NOT NULL,
+    identity_key BLOB NOT NULL,
+    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP
+) ENGINE=InnoDB;
+
+-- Devices: each user can have multiple devices
+CREATE TABLE IF NOT EXISTS devices (
+    id CHAR(36) NOT NULL PRIMARY KEY,
+    user_id CHAR(36) NOT NULL,
+    device_name VARCHAR(255) DEFAULT NULL,
+    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    last_seen_at DATETIME DEFAULT NULL,
+    FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE,
+    INDEX idx_devices_user (user_id)
+) ENGINE=InnoDB;
+
+-- Signed Pre-Keys (X25519, signed by Ed25519 identity key) — per device
+CREATE TABLE IF NOT EXISTS signed_prekeys (
+    id CHAR(36) NOT NULL PRIMARY KEY,
+    user_id CHAR(36) NOT NULL,
+    device_id CHAR(36) DEFAULT NULL,
+    public_key BLOB NOT NULL,
+    signature BLOB NOT NULL,
+    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE,
+    INDEX idx_spk_user_device (user_id, device_id)
+) ENGINE=InnoDB;
+
+-- One-Time Pre-Keys (consumed on use) — per device
+CREATE TABLE IF NOT EXISTS one_time_prekeys (
+    id CHAR(36) NOT NULL PRIMARY KEY,
+    user_id CHAR(36) NOT NULL,
+    device_id CHAR(36) DEFAULT NULL,
+    public_key BLOB NOT NULL,
+    FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE,
+    INDEX idx_opk_user_device (user_id, device_id)
+) ENGINE=InnoDB;
+
+-- Conversations
+CREATE TABLE IF NOT EXISTS conversations (
+    id CHAR(36) NOT NULL PRIMARY KEY,
+    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    name VARCHAR(255) DEFAULT NULL,
+    created_by CHAR(36) DEFAULT NULL,
+    avatar_file VARCHAR(255) DEFAULT NULL
+) ENGINE=InnoDB;
+
+CREATE TABLE IF NOT EXISTS conversation_members (
+    conversation_id CHAR(36) NOT NULL,
+    user_id CHAR(36) NOT NULL,
+    joined_at DATETIME NULL,
+    PRIMARY KEY (conversation_id, user_id),
+    FOREIGN KEY (conversation_id) REFERENCES conversations(id) ON DELETE CASCADE,
+    FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
+) ENGINE=InnoDB;
+
+-- Group invitations (pending invitations to join a group)
+CREATE TABLE IF NOT EXISTS group_invitations (
+    id CHAR(36) NOT NULL PRIMARY KEY,
+    conversation_id CHAR(36) NOT NULL,
+    user_id CHAR(36) NOT NULL,
+    invited_by CHAR(36) NOT NULL,
+    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    UNIQUE KEY uq_conv_user (conversation_id, user_id),
+    FOREIGN KEY (conversation_id) REFERENCES conversations(id) ON DELETE CASCADE,
+    FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE,
+    FOREIGN KEY (invited_by) REFERENCES users(id) ON DELETE CASCADE
+) ENGINE=InnoDB;
+
+-- Messages: per-recipient ciphertext (Double Ratchet = each recipient has different ciphertext)
+CREATE TABLE IF NOT EXISTS messages (
+    id CHAR(36) NOT NULL PRIMARY KEY,
+    conversation_id CHAR(36) NOT NULL,
+    sender_id CHAR(36) NOT NULL,
+    sender_device_id CHAR(36) DEFAULT NULL,
+    ratchet_header BLOB NOT NULL,
+    x3dh_header BLOB DEFAULT NULL,
+    sender_chain_id BLOB DEFAULT NULL,
+    sender_chain_n INT DEFAULT NULL,
+    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    deleted_at DATETIME DEFAULT NULL,
+    image_file_id CHAR(36) DEFAULT NULL,
+    FOREIGN KEY (conversation_id) REFERENCES conversations(id) ON DELETE CASCADE,
+    FOREIGN KEY (sender_id) REFERENCES users(id) ON DELETE CASCADE,
+    INDEX idx_messages_conv_created (conversation_id, created_at)
+) ENGINE=InnoDB;
+
+-- Per-recipient encrypted content — per device
+-- device_id '00000000-0000-0000-0000-000000000000' = self-encrypted / legacy
+CREATE TABLE IF NOT EXISTS message_recipients (
+    message_id CHAR(36) NOT NULL,
+    user_id CHAR(36) NOT NULL,
+    device_id CHAR(36) NOT NULL DEFAULT '00000000-0000-0000-0000-000000000000',
+    encrypted_content BLOB NOT NULL,
+    nonce BLOB NOT NULL,
+    ratchet_header BLOB DEFAULT NULL,
+    x3dh_header BLOB DEFAULT NULL,
+    PRIMARY KEY (message_id, user_id, device_id),
+    FOREIGN KEY (message_id) REFERENCES messages(id) ON DELETE CASCADE,
+    FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
+) ENGINE=InnoDB;
+
+-- Sender Keys for groups (distributed via pairwise ratchet) — per device
+CREATE TABLE IF NOT EXISTS group_sender_keys (
+    conversation_id CHAR(36) NOT NULL,
+    sender_id CHAR(36) NOT NULL,
+    device_id CHAR(36) NOT NULL DEFAULT '00000000-0000-0000-0000-000000000000',
+    chain_id BLOB NOT NULL,
+    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    PRIMARY KEY (conversation_id, sender_id, device_id),
+    FOREIGN KEY (conversation_id) REFERENCES conversations(id) ON DELETE CASCADE,
+    FOREIGN KEY (sender_id) REFERENCES users(id) ON DELETE CASCADE
+) ENGINE=InnoDB;
+
+-- Read receipts
+CREATE TABLE IF NOT EXISTS message_reads (
+    message_id CHAR(36) NOT NULL,
+    user_id CHAR(36) NOT NULL,
+    read_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    PRIMARY KEY (message_id, user_id),
+    FOREIGN KEY (message_id) REFERENCES messages(id) ON DELETE CASCADE,
+    FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
+) ENGINE=InnoDB;
+
+-- User profiles
+CREATE TABLE IF NOT EXISTS user_profiles (
+    user_id CHAR(36) NOT NULL PRIMARY KEY,
+    phone VARCHAR(50) DEFAULT NULL,
+    phone_visible TINYINT(1) NOT NULL DEFAULT 0,
+    email_visible TINYINT(1) NOT NULL DEFAULT 1,
+    location VARCHAR(255) DEFAULT NULL,
+    location_visible TINYINT(1) NOT NULL DEFAULT 0,
+    avatar_file VARCHAR(255) DEFAULT NULL,
+    updated_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
+    FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
+) ENGINE=InnoDB;
+
+-- Image uploads
+CREATE TABLE IF NOT EXISTS image_uploads (
+    file_id CHAR(36) NOT NULL PRIMARY KEY,
+    conversation_id CHAR(36) NOT NULL,
+    uploader_id CHAR(36) NOT NULL,
+    file_size BIGINT NOT NULL DEFAULT 0,
+    completed BOOLEAN NOT NULL DEFAULT FALSE,
+    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    FOREIGN KEY (conversation_id) REFERENCES conversations(id) ON DELETE CASCADE,
+    FOREIGN KEY (uploader_id) REFERENCES users(id) ON DELETE CASCADE
+) ENGINE=InnoDB;