426 lines
14 KiB
Rust
426 lines
14 KiB
Rust
// This file is part of Moonfire NVR, a security camera network video recorder.
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// Copyright (C) 2018 The Moonfire NVR Authors; see AUTHORS and LICENSE.txt.
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// SPDX-License-Identifier: GPL-v3.0-or-later WITH GPL-3.0-linking-exception.
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/// Upgrades a version 1 schema to a version 2 schema.
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use crate::dir;
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use crate::schema::DirMeta;
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use failure::{bail, format_err, Error};
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use nix::fcntl::{FlockArg, OFlag};
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use nix::sys::stat::Mode;
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use rusqlite::params;
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use std::os::unix::io::AsRawFd;
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use uuid::Uuid;
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pub fn run(args: &super::Args, tx: &rusqlite::Transaction) -> Result<(), Error> {
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let sample_file_path = args.sample_file_dir.ok_or_else(|| {
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format_err!("--sample-file-dir required when upgrading from schema version 1 to 2.")
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})?;
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let mut d = nix::dir::Dir::open(
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sample_file_path,
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OFlag::O_DIRECTORY | OFlag::O_RDONLY,
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Mode::empty(),
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)?;
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nix::fcntl::flock(d.as_raw_fd(), FlockArg::LockExclusiveNonblock)?;
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verify_dir_contents(sample_file_path, &mut d, tx)?;
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// These create statements match the schema.sql when version 2 was the latest.
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tx.execute_batch(
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r#"
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create table meta (
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uuid blob not null check (length(uuid) = 16)
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);
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create table open (
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id integer primary key,
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uuid blob unique not null check (length(uuid) = 16),
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start_time_90k integer,
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end_time_90k integer,
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duration_90k integer
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);
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create table sample_file_dir (
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id integer primary key,
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path text unique not null,
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uuid blob unique not null check (length(uuid) = 16),
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last_complete_open_id integer references open (id)
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);
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create table user (
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id integer primary key,
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username unique not null,
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flags integer not null,
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password_hash text,
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password_id integer not null default 0,
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password_failure_count integer not null default 0,
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unix_uid integer
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);
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create table user_session (
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session_id_hash blob primary key not null,
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user_id integer references user (id) not null,
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seed blob not null,
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flags integer not null,
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domain text,
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description text,
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creation_password_id integer,
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creation_time_sec integer not null,
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creation_user_agent text,
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creation_peer_addr blob,
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revocation_time_sec integer,
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revocation_user_agent text,
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revocation_peer_addr blob,
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revocation_reason integer,
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revocation_reason_detail text,
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last_use_time_sec integer,
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last_use_user_agent text,
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last_use_peer_addr blob,
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use_count not null default 0
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) without rowid;
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create index user_session_uid on user_session (user_id);
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"#,
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)?;
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let db_uuid = ::uuid::Uuid::new_v4();
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let db_uuid_bytes = &db_uuid.as_bytes()[..];
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tx.execute("insert into meta (uuid) values (?)", params![db_uuid_bytes])?;
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let open_uuid = ::uuid::Uuid::new_v4();
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let open_uuid_bytes = &open_uuid.as_bytes()[..];
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tx.execute(
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"insert into open (uuid) values (?)",
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params![open_uuid_bytes],
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)?;
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let open_id = tx.last_insert_rowid() as u32;
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let dir_uuid = ::uuid::Uuid::new_v4();
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let dir_uuid_bytes = &dir_uuid.as_bytes()[..];
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// Write matching metadata to the directory.
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let mut meta = DirMeta::default();
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{
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meta.db_uuid.extend_from_slice(db_uuid_bytes);
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meta.dir_uuid.extend_from_slice(dir_uuid_bytes);
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let open = meta.last_complete_open.set_default();
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open.id = open_id;
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open.uuid.extend_from_slice(&open_uuid_bytes);
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}
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dir::write_meta(d.as_raw_fd(), &meta)?;
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let sample_file_path = sample_file_path.to_str().ok_or_else(|| {
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format_err!(
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"sample file dir {} is not a valid string",
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sample_file_path.display()
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)
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})?;
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tx.execute(
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r#"
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insert into sample_file_dir (path, uuid, last_complete_open_id)
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values (?, ?, ?)
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"#,
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params![sample_file_path, dir_uuid_bytes, open_id],
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)?;
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tx.execute_batch(
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r#"
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drop table reserved_sample_files;
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alter table camera rename to old_camera;
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alter table recording rename to old_recording;
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alter table video_sample_entry rename to old_video_sample_entry;
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drop index recording_cover;
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create table camera (
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id integer primary key,
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uuid blob unique not null check (length(uuid) = 16),
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short_name text not null,
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description text,
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host text,
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username text,
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password text
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);
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create table stream (
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id integer primary key,
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camera_id integer not null references camera (id),
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sample_file_dir_id integer references sample_file_dir (id),
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type text not null check (type in ('main', 'sub')),
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record integer not null check (record in (1, 0)),
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rtsp_path text not null,
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retain_bytes integer not null check (retain_bytes >= 0),
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flush_if_sec integer not null,
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next_recording_id integer not null check (next_recording_id >= 0),
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unique (camera_id, type)
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);
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create table recording (
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composite_id integer primary key,
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open_id integer not null,
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stream_id integer not null references stream (id),
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run_offset integer not null,
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flags integer not null,
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sample_file_bytes integer not null check (sample_file_bytes > 0),
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start_time_90k integer not null check (start_time_90k > 0),
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duration_90k integer not null
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check (duration_90k >= 0 and duration_90k < 5*60*90000),
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video_samples integer not null check (video_samples > 0),
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video_sync_samples integer not null check (video_sync_samples > 0),
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video_sample_entry_id integer references video_sample_entry (id),
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check (composite_id >> 32 = stream_id)
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);
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create index recording_cover on recording (
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stream_id,
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start_time_90k,
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open_id,
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duration_90k,
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video_samples,
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video_sync_samples,
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video_sample_entry_id,
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sample_file_bytes,
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run_offset,
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flags
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);
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create table recording_integrity (
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composite_id integer primary key references recording (composite_id),
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local_time_delta_90k integer,
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local_time_since_open_90k integer,
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wall_time_delta_90k integer,
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sample_file_sha1 blob check (length(sample_file_sha1) <= 20)
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);
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create table video_sample_entry (
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id integer primary key,
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sha1 blob unique not null check (length(sha1) = 20),
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width integer not null check (width > 0),
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height integer not null check (height > 0),
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rfc6381_codec text not null,
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data blob not null check (length(data) > 86)
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);
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create table garbage (
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sample_file_dir_id integer references sample_file_dir (id),
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composite_id integer,
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primary key (sample_file_dir_id, composite_id)
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) without rowid;
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insert into camera
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select
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id,
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uuid,
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short_name,
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description,
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host,
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username,
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password
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from old_camera;
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-- Insert main streams using the same id as the camera, to ease changing recordings.
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insert into stream
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select
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old_camera.id,
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old_camera.id,
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sample_file_dir.id,
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'main',
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1,
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old_camera.main_rtsp_path,
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old_camera.retain_bytes,
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0,
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old_camera.next_recording_id
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from
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old_camera cross join sample_file_dir;
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-- Insert sub stream (if path is non-empty) using any id.
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insert into stream (camera_id, sample_file_dir_id, type, record, rtsp_path,
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retain_bytes, flush_if_sec, next_recording_id)
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select
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old_camera.id,
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sample_file_dir.id,
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'sub',
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0,
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old_camera.sub_rtsp_path,
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0,
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90,
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1
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from
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old_camera cross join sample_file_dir
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where
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old_camera.sub_rtsp_path != '';
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"#,
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)?;
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// Add the new video_sample_entry rows, before inserting the recordings referencing them.
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fix_video_sample_entry(tx)?;
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tx.execute_batch(
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r#"
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insert into recording
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select
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r.composite_id,
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r.camera_id,
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o.id,
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r.run_offset,
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r.flags,
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r.sample_file_bytes,
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r.start_time_90k,
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r.duration_90k,
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r.video_samples,
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r.video_sync_samples,
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r.video_sample_entry_id
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from
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old_recording r cross join open o;
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insert into recording_integrity (composite_id, local_time_delta_90k, sample_file_sha1)
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select
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r.composite_id,
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case when r.run_offset > 0 then local_time_delta_90k else null end,
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p.sample_file_sha1
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from
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old_recording r join recording_playback p on (r.composite_id = p.composite_id);
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"#,
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)?;
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Ok(())
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}
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/// Ensures the sample file directory has the expected contents.
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/// Among other problems, this catches a fat-fingered `--sample-file-dir`.
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/// The expected contents are:
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///
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/// * required: recording uuids.
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/// * optional: reserved sample file uuids.
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/// * optional: meta and meta-tmp from half-completed update attempts.
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/// * forbidden: anything else.
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fn verify_dir_contents(
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sample_file_path: &std::path::Path,
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dir: &mut nix::dir::Dir,
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tx: &rusqlite::Transaction,
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) -> Result<(), Error> {
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// Build a hash of the uuids found in the directory.
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let n: i64 = tx.query_row(
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r#"
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select
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a.c + b.c
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from
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(select count(*) as c from recording) a,
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(select count(*) as c from reserved_sample_files) b;
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"#,
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params![],
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|r| r.get(0),
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)?;
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let mut files = ::fnv::FnvHashSet::with_capacity_and_hasher(n as usize, Default::default());
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for e in dir.iter() {
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let e = e?;
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let f = e.file_name();
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match f.to_bytes() {
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b"." | b".." => continue,
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b"meta" | b"meta-tmp" => {
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// Ignore metadata files. These might from a half-finished update attempt.
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// If the directory is actually an in-use >v3 format, other contents won't match.
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continue;
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}
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_ => {}
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};
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let s = match f.to_str() {
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Ok(s) => s,
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Err(_) => bail!("unexpected file {:?} in {:?}", f, sample_file_path),
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};
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let uuid = match Uuid::parse_str(s) {
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Ok(u) => u,
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Err(_) => bail!("unexpected file {:?} in {:?}", f, sample_file_path),
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};
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if s != uuid.to_hyphenated_ref().to_string() {
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// non-canonical form.
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bail!("unexpected file {:?} in {:?}", f, sample_file_path);
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}
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files.insert(uuid);
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}
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// Iterate through the database and check that everything has a matching file.
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{
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let mut stmt = tx.prepare(r"select sample_file_uuid from recording_playback")?;
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let mut rows = stmt.query(params![])?;
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while let Some(row) = rows.next()? {
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let uuid: crate::db::FromSqlUuid = row.get(0)?;
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if !files.remove(&uuid.0) {
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bail!(
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"{} is missing from dir {}!",
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uuid.0,
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sample_file_path.display()
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);
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}
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}
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}
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let mut stmt = tx.prepare(r"select uuid from reserved_sample_files")?;
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let mut rows = stmt.query(params![])?;
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while let Some(row) = rows.next()? {
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let uuid: crate::db::FromSqlUuid = row.get(0)?;
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if files.remove(&uuid.0) {
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// Also remove the garbage file. For historical reasons (version 2 was originally
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// defined as not having a garbage table so still is), do this here rather than with
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// the other path manipulations in v2_to_v3.rs. There's no harm anyway in deleting
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// a garbage file so if the upgrade transation fails this is still a valid and complete
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// version 1 database.
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let p = super::UuidPath::from(uuid.0);
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nix::unistd::unlinkat(
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Some(dir.as_raw_fd()),
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&p,
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nix::unistd::UnlinkatFlags::NoRemoveDir,
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)?;
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}
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}
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if !files.is_empty() {
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bail!(
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"{} unexpected sample file uuids in dir {}: {:?}!",
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files.len(),
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sample_file_path.display(),
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files
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);
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}
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Ok(())
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}
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fn fix_video_sample_entry(tx: &rusqlite::Transaction) -> Result<(), Error> {
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let mut select = tx.prepare(
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r#"
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select
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id,
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sha1,
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width,
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height,
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data
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from
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old_video_sample_entry
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"#,
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)?;
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let mut insert = tx.prepare(
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r#"
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insert into video_sample_entry values (:id, :sha1, :width, :height, :rfc6381_codec, :data)
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"#,
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)?;
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let mut rows = select.query(params![])?;
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while let Some(row) = rows.next()? {
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let data: Vec<u8> = row.get(4)?;
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insert.execute_named(&[
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(":id", &row.get::<_, i32>(0)?),
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(":sha1", &row.get::<_, Vec<u8>>(1)?),
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(":width", &row.get::<_, i32>(2)?),
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(":height", &row.get::<_, i32>(3)?),
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(":rfc6381_codec", &rfc6381_codec_from_sample_entry(&data)?),
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(":data", &data),
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])?;
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}
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Ok(())
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}
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// This previously lived in h264.rs. As of version 1, H.264 is the only supported codec.
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fn rfc6381_codec_from_sample_entry(sample_entry: &[u8]) -> Result<String, Error> {
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if sample_entry.len() < 99 || &sample_entry[4..8] != b"avc1" || &sample_entry[90..94] != b"avcC"
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{
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bail!("not a valid AVCSampleEntry");
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}
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let profile_idc = sample_entry[103];
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let constraint_flags_byte = sample_entry[104];
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let level_idc = sample_entry[105];
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Ok(format!(
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"avc1.{:02x}{:02x}{:02x}",
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profile_idc, constraint_flags_byte, level_idc
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))
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}
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