discourse/lib/tasks/uploads.rake
2020-01-28 22:10:25 +01:00

853 lines
26 KiB
Ruby

# frozen_string_literal: true
require "db_helper"
require "digest/sha1"
require "base62"
################################################################################
# gather #
################################################################################
require_dependency "rake_helpers"
task "uploads:gather" => :environment do
ENV["RAILS_DB"] ? gather_uploads : gather_uploads_for_all_sites
end
def gather_uploads_for_all_sites
RailsMultisite::ConnectionManagement.each_connection { gather_uploads }
end
def file_exists?(path)
File.exists?(path) && File.size(path) > 0
rescue
false
end
def gather_uploads
public_directory = "#{Rails.root}/public"
current_db = RailsMultisite::ConnectionManagement.current_db
puts "", "Gathering uploads for '#{current_db}'...", ""
Upload.where("url ~ '^\/uploads\/'")
.where("url !~ '^\/uploads\/#{current_db}'")
.find_each do |upload|
begin
old_db = upload.url[/^\/uploads\/([^\/]+)\//, 1]
from = upload.url.dup
to = upload.url.sub("/uploads/#{old_db}/", "/uploads/#{current_db}/")
source = "#{public_directory}#{from}"
destination = "#{public_directory}#{to}"
# create destination directory & copy file unless it already exists
unless file_exists?(destination)
`mkdir -p '#{File.dirname(destination)}'`
`cp --link '#{source}' '#{destination}'`
end
# ensure file has been succesfuly copied over
raise unless file_exists?(destination)
# remap links in db
DbHelper.remap(from, to)
rescue
putc "!"
else
putc "."
end
end
puts "", "Done!"
end
################################################################################
# backfill_shas #
################################################################################
task "uploads:backfill_shas" => :environment do
RailsMultisite::ConnectionManagement.each_connection do |db|
puts "Backfilling #{db}..."
Upload.where(sha1: nil).find_each do |u|
begin
path = Discourse.store.path_for(u)
sha1 = Upload.generate_digest(path)
u.sha1 = u.secure? ? SecureRandom.hex(20) : sha1
u.original_sha1 = u.secure? ? sha1 : nil
u.save!
putc "."
rescue => e
puts "Skipping #{u.original_filename} (#{u.url}) #{e.message}"
end
end
end
puts "", "Done"
end
################################################################################
# migrate_from_s3 #
################################################################################
task "uploads:migrate_from_s3" => :environment do
ENV["RAILS_DB"] ? migrate_from_s3 : migrate_all_from_s3
end
def guess_filename(url, raw)
begin
uri = URI.parse("http:#{url}")
f = uri.open("rb", read_timeout: 5, redirect: true, allow_redirections: :all)
filename = if f.meta && f.meta["content-disposition"]
f.meta["content-disposition"][/filename="([^"]+)"/, 1].presence
end
filename ||= raw[/<a class="attachment" href="(?:https?:)?#{Regexp.escape(url)}">([^<]+)<\/a>/, 1].presence
filename ||= File.basename(url)
filename
rescue
nil
ensure
f.try(:close!) rescue nil
end
end
def migrate_all_from_s3
RailsMultisite::ConnectionManagement.each_connection { migrate_from_s3 }
end
def migrate_from_s3
require "file_store/s3_store"
# make sure S3 is disabled
if SiteSetting.Upload.enable_s3_uploads
puts "You must disable S3 uploads before running that task."
return
end
db = RailsMultisite::ConnectionManagement.current_db
puts "Migrating uploads from S3 to local storage for '#{db}'..."
max_file_size = [SiteSetting.max_image_size_kb, SiteSetting.max_attachment_size_kb].max.kilobytes
Post
.where("user_id > 0")
.where("raw LIKE '%.s3%.amazonaws.com/%' OR raw LIKE '%(upload://%'")
.find_each do |post|
begin
updated = false
post.raw.gsub!(/(\/\/[\w.-]+amazonaws\.com\/(original|optimized)\/([a-z0-9]+\/)+\h{40}([\w.-]+)?)/i) do |url|
begin
if filename = guess_filename(url, post.raw)
file = FileHelper.download("http:#{url}", max_file_size: max_file_size, tmp_file_name: "from_s3", follow_redirect: true)
sha1 = Upload.generate_digest(file)
origin = nil
existing_upload = Upload.find_by(sha1: sha1)
if existing_upload&.url&.start_with?("//")
filename = existing_upload.original_filename
origin = existing_upload.origin
existing_upload.destroy
end
new_upload = UploadCreator.new(file, filename, origin: origin).create_for(post.user_id || -1)
if new_upload&.save
updated = true
url = new_upload.url
end
end
url
rescue
url
end
end
post.raw.gsub!(/(upload:\/\/[0-9a-zA-Z]+\.\w+)/) do |url|
begin
if sha1 = Upload.sha1_from_short_url(url)
if upload = Upload.find_by(sha1: sha1)
if upload.url.start_with?("//")
file = FileHelper.download("http:#{upload.url}", max_file_size: max_file_size, tmp_file_name: "from_s3", follow_redirect: true)
filename = upload.original_filename
origin = upload.origin
upload.destroy
new_upload = UploadCreator.new(file, filename, origin: origin).create_for(post.user_id || -1)
if new_upload&.save
updated = true
url = new_upload.url
end
end
end
end
url
rescue
url
end
end
if updated
post.save!
post.rebake!
putc "#"
else
putc "."
end
rescue
putc "X"
end
end
puts "Done!"
end
################################################################################
# migrate_to_s3 #
################################################################################
task "uploads:migrate_to_s3" => :environment do
ENV["RAILS_DB"] ? migrate_to_s3 : migrate_to_s3_all_sites
end
def migrate_to_s3_all_sites
RailsMultisite::ConnectionManagement.each_connection do
begin
migrate_to_s3
rescue RuntimeError => e
if ENV["SKIP_FAILED"]
puts e
else
raise e unless ENV["SKIP_FAILED"]
end
end
end
end
def create_migration
FileStore::ToS3Migration.new(
s3_options: FileStore::ToS3Migration.s3_options_from_env,
dry_run: !!ENV["DRY_RUN"],
migrate_to_multisite: !!ENV["MIGRATE_TO_MULTISITE"],
skip_etag_verify: !!ENV["SKIP_ETAG_VERIFY"]
)
end
def migrate_to_s3
create_migration.migrate
end
task "uploads:s3_migration_status" => :environment do
success = true
RailsMultisite::ConnectionManagement.each_connection do
success &&= create_migration.migration_successful?
end
queued_jobs = Sidekiq::Stats.new.queues.sum { |_ , x| x }
if queued_jobs > 50
puts "WARNING: There are #{queued_jobs} jobs queued! Wait till Sidekiq clears backlog prior to migrating site to a new host"
exit 1
end
if !success
puts "Site is not ready for migration"
exit 1
end
puts "All sites appear to have uploads in order!"
end
################################################################################
# clean_up #
################################################################################
task "uploads:clean_up" => :environment do
ENV["RAILS_DB"] ? clean_up_uploads : clean_up_uploads_all_sites
end
def clean_up_uploads_all_sites
RailsMultisite::ConnectionManagement.each_connection { clean_up_uploads }
end
def clean_up_uploads
db = RailsMultisite::ConnectionManagement.current_db
puts "Cleaning up uploads and thumbnails for '#{db}'..."
if Discourse.store.external?
puts "This task only works for internal storages."
exit 1
end
puts <<~OUTPUT
This task will remove upload records and files permanently.
Would you like to take a full backup before the clean up? (Y/N)
OUTPUT
if STDIN.gets.chomp.downcase == 'y'
puts "Starting backup..."
backuper = BackupRestore::Backuper.new(Discourse.system_user.id)
backuper.run
exit 1 unless backuper.success
end
public_directory = Rails.root.join("public").to_s
##
## DATABASE vs FILE SYSTEM
##
# uploads & avatars
Upload.find_each do |upload|
path = File.join(public_directory, upload.url)
if !File.exists?(path)
upload.destroy!
putc "#"
else
putc "."
end
end
# optimized images
OptimizedImage.find_each do |optimized_image|
path = File.join(public_directory, optimized_image.url)
if !File.exists?(path)
optimized_image.destroy!
putc "#"
else
putc "."
end
end
##
## FILE SYSTEM vs DATABASE
##
uploads_directory = File.join(public_directory, 'uploads', db).to_s
# avatars (no avatar should be stored in that old directory)
FileUtils.rm_rf("#{uploads_directory}/avatars")
# uploads and optimized images
Dir.glob("#{uploads_directory}/**/*.*").each do |file_path|
sha1 = Upload.generate_digest(file_path)
url = file_path.split(public_directory, 2)[1]
if (Upload.where(sha1: sha1).empty? &&
Upload.where(url: url).empty?) &&
(OptimizedImage.where(sha1: sha1).empty? &&
OptimizedImage.where(url: url).empty?)
FileUtils.rm(file_path)
putc "#"
else
putc "."
end
end
puts "Removing empty directories..."
puts `find #{uploads_directory} -type d -empty -exec rmdir {} \\;`
puts "Done!"
end
################################################################################
# missing files #
################################################################################
# list all missing uploads and optimized images
task "uploads:missing_files" => :environment do
if ENV["RAILS_DB"]
list_missing_uploads(skip_optimized: ENV['SKIP_OPTIMIZED'])
else
RailsMultisite::ConnectionManagement.each_connection do |db|
if ENV["SKIP_EXTERNAL"] == "1" && Discourse.store.external?
puts "#{RailsMultisite::ConnectionManagement.current_db} has uploads stored externally skipping!"
else
if Discourse.store.external?
puts "-" * 80
puts "WARNING! WARNING! WARNING!"
puts "-" * 80
puts
puts <<~TEXT
#{RailsMultisite::ConnectionManagement.current_db} has uploads on S3!
validating without inventory is likely to take an enormous amount of time.
We recommend you run SKIP_EXTERNAL=1 rake uploads:missing to skip validating if on a multisite.
TEXT
end
list_missing_uploads(skip_optimized: ENV['SKIP_OPTIMIZED'])
end
end
end
end
def list_missing_uploads(skip_optimized: false)
Discourse.store.list_missing_uploads(skip_optimized: skip_optimized)
end
task "uploads:missing" => :environment do
Rake::Task["uploads:missing_files"].invoke
end
################################################################################
# regenerate_missing_optimized #
################################################################################
# regenerate missing optimized images
task "uploads:regenerate_missing_optimized" => :environment do
if ENV["RAILS_DB"]
regenerate_missing_optimized
else
RailsMultisite::ConnectionManagement.each_connection { regenerate_missing_optimized }
end
end
def regenerate_missing_optimized
db = RailsMultisite::ConnectionManagement.current_db
puts "Regenerating missing optimized images for '#{db}'..."
if Discourse.store.external?
puts "This task only works for internal storages."
return
end
public_directory = "#{Rails.root}/public"
missing_uploads = Set.new
avatar_upload_ids = UserAvatar.all.pluck(:custom_upload_id, :gravatar_upload_id).flatten.compact
default_scope = OptimizedImage.includes(:upload)
[
default_scope
.where("optimized_images.upload_id IN (?)", avatar_upload_ids),
default_scope
.where("optimized_images.upload_id NOT IN (?)", avatar_upload_ids)
.where("LENGTH(COALESCE(url, '')) > 0")
.where("width > 0 AND height > 0")
].each do |scope|
scope.find_each do |optimized_image|
upload = optimized_image.upload
next unless optimized_image.url =~ /^\/[^\/]/
next unless upload.url =~ /^\/[^\/]/
thumbnail = "#{public_directory}#{optimized_image.url}"
original = "#{public_directory}#{upload.url}"
if !File.exists?(thumbnail) || File.size(thumbnail) <= 0
# make sure the original image exists locally
if (!File.exists?(original) || File.size(original) <= 0) && upload.origin.present?
# try to fix it by redownloading it
begin
downloaded = FileHelper.download(
upload.origin,
max_file_size: SiteSetting.max_image_size_kb.kilobytes,
tmp_file_name: "discourse-missing",
follow_redirect: true
) rescue nil
if downloaded && downloaded.size > 0
FileUtils.mkdir_p(File.dirname(original))
File.open(original, "wb") { |f| f.write(downloaded.read) }
end
ensure
downloaded.try(:close!) if downloaded.respond_to?(:close!)
end
end
if File.exists?(original) && File.size(original) > 0
FileUtils.mkdir_p(File.dirname(thumbnail))
OptimizedImage.resize(original, thumbnail, optimized_image.width, optimized_image.height)
putc "#"
else
missing_uploads << original
putc "X"
end
else
putc "."
end
end
end
puts "", "Done"
if missing_uploads.size > 0
puts "Missing uploads:"
missing_uploads.sort.each { |u| puts u }
end
end
################################################################################
# migrate_to_new_scheme #
################################################################################
task "uploads:start_migration" => :environment do
SiteSetting.migrate_to_new_scheme = true
puts "Migration started!"
end
task "uploads:stop_migration" => :environment do
SiteSetting.migrate_to_new_scheme = false
puts "Migration stoped!"
end
task "uploads:analyze", [:cache_path, :limit] => :environment do |_, args|
now = Time.zone.now
current_db = RailsMultisite::ConnectionManagement.current_db
puts "Analyzing uploads for '#{current_db}'... This may take awhile...\n"
cache_path = args[:cache_path]
current_db = RailsMultisite::ConnectionManagement.current_db
uploads_path = Rails.root.join('public', 'uploads', current_db)
path =
if cache_path
cache_path
else
path = "/tmp/#{current_db}-#{now.to_i}-paths.txt"
FileUtils.touch("/tmp/#{now.to_i}-paths.txt")
`find #{uploads_path} -type f -printf '%s %h/%f\n' > #{path}`
path
end
extensions = {}
paths_count = 0
File.readlines(path).each do |line|
size, file_path = line.split(" ", 2)
paths_count += 1
extension = File.extname(file_path).chomp.downcase
extensions[extension] ||= {}
extensions[extension]["count"] ||= 0
extensions[extension]["count"] += 1
extensions[extension]["size"] ||= 0
extensions[extension]["size"] += size.to_i
end
uploads_count = Upload.count
optimized_images_count = OptimizedImage.count
puts <<~REPORT
Report for '#{current_db}'
-----------#{'-' * current_db.length}
Number of `Upload` records in DB: #{uploads_count}
Number of `OptimizedImage` records in DB: #{optimized_images_count}
**Total DB records: #{uploads_count + optimized_images_count}**
Number of images in uploads folder: #{paths_count}
------------------------------------#{'-' * paths_count.to_s.length}
REPORT
helper = Class.new do
include ActionView::Helpers::NumberHelper
end
helper = helper.new
printf "%-15s | %-15s | %-15s\n", 'extname', 'total size', 'count'
puts "-" * 45
extensions.sort_by { |_, value| value['size'] }.reverse.each do |extname, value|
printf "%-15s | %-15s | %-15s\n", extname, helper.number_to_human_size(value['size']), value['count']
end
puts "\n"
limit = args[:limit] || 10
sql = <<~SQL
SELECT
users.username,
COUNT(uploads.user_id) AS num_of_uploads,
SUM(uploads.filesize) AS total_size_of_uploads,
COUNT(optimized_images.id) AS num_of_optimized_images
FROM users
INNER JOIN uploads ON users.id = uploads.user_id
INNER JOIN optimized_images ON uploads.id = optimized_images.upload_id
GROUP BY users.id
ORDER BY total_size_of_uploads DESC
LIMIT #{limit}
SQL
puts "Users using the most disk space"
puts "-------------------------------\n"
printf "%-25s | %-25s | %-25s | %-25s\n", 'username', 'total size of uploads', 'number of uploads', 'number of optimized images'
puts "-" * 110
DB.query_single(sql).each do |username, num_of_uploads, total_size_of_uploads, num_of_optimized_images|
printf "%-25s | %-25s | %-25s | %-25s\n", username, helper.number_to_human_size(total_size_of_uploads), num_of_uploads, num_of_optimized_images
end
puts "\n"
puts "List of file paths @ #{path}"
puts "Duration: #{Time.zone.now - now} seconds"
end
task "uploads:fix_incorrect_extensions" => :environment do
UploadFixer.fix_all_extensions
end
task "uploads:recover_from_tombstone" => :environment do
Rake::Task["uploads:recover"].invoke
end
task "uploads:recover" => :environment do
dry_run = ENV["DRY_RUN"].present?
stop_on_error = ENV["STOP_ON_ERROR"].present?
if ENV["RAILS_DB"]
UploadRecovery.new(dry_run: dry_run, stop_on_error: stop_on_error).recover
else
RailsMultisite::ConnectionManagement.each_connection do |db|
UploadRecovery.new(dry_run: dry_run, stop_on_error: stop_on_error).recover
end
end
end
task "uploads:disable_secure_media" => :environment do
RailsMultisite::ConnectionManagement.each_connection do |db|
unless Discourse.store.external?
puts "This task only works for external storage."
exit 1
end
puts "Disabling secure media and resetting uploads to not secure in #{db}...", ""
SiteSetting.secure_media = false
secure_uploads = Upload.includes(:posts).where(secure: true)
secure_upload_count = secure_uploads.count
i = 0
secure_uploads.find_each(batch_size: 20).each do |upload|
Upload.transaction do
upload.secure = false
RakeHelpers.print_status_with_label("Updating ACL for upload #{upload.id}.......", i, secure_upload_count)
Discourse.store.update_upload_ACL(upload)
RakeHelpers.print_status_with_label("Rebaking posts for upload #{upload.id}.......", i, secure_upload_count)
upload.posts.each(&:rebake!)
upload.save
i += 1
end
end
RakeHelpers.print_status_with_label("Rebaking and updating complete! ", i, secure_upload_count)
puts ""
end
puts "Secure media is now disabled!", ""
end
##
# Run this task whenever the secure_media or login_required
# settings are changed for a Discourse instance to update
# the upload secure flag and S3 upload ACLs.
task "uploads:ensure_correct_acl" => :environment do
RailsMultisite::ConnectionManagement.each_connection do |db|
unless Discourse.store.external?
puts "This task only works for external storage."
exit 1
end
puts "Ensuring correct ACL for uploads in #{db}...", ""
Upload.transaction do
mark_secure_in_loop_because_no_login_required = false
# First of all only get relevant uploads (supported media).
#
# Also only get uploads that are not for a theme or a site setting, so only
# get post related uploads.
uploads_with_supported_media = Upload.includes(:posts, :optimized_images).where(
"LOWER(original_filename) SIMILAR TO '%\.(jpg|jpeg|png|gif|svg|ico|mp3|ogg|wav|m4a|mov|mp4|webm|ogv)'"
).joins(:post_uploads)
puts "There are #{uploads_with_supported_media.count} upload(s) with supported media that could be marked secure.", ""
# Simply mark all these uploads as secure if login_required because no anons will be able to access them
if SiteSetting.login_required?
mark_all_as_secure_login_required(uploads_with_supported_media)
else
# If NOT login_required, then we have to go for the other slower flow, where in the loop
# we mark the upload as secure if the first post it is used in is with_secure_media?
mark_secure_in_loop_because_no_login_required = true
puts "Marking posts as secure in the next step because login_required is false."
end
puts "", "Rebaking #{uploads_with_supported_media.count} upload posts and updating ACLs in S3.", ""
upload_ids_to_mark_as_secure, uploads_skipped_because_of_error = update_acls_and_rebake_upload_posts(
uploads_with_supported_media, mark_secure_in_loop_because_no_login_required
)
log_rebake_errors(uploads_skipped_because_of_error)
mark_specific_uploads_as_secure_no_login_required(upload_ids_to_mark_as_secure)
end
end
puts "", "Done"
end
def mark_all_as_secure_login_required(uploads_with_supported_media)
puts "Marking #{uploads_with_supported_media.count} upload(s) as secure because login_required is true.", ""
uploads_with_supported_media.update_all(secure: true)
puts "Finished marking upload(s) as secure."
end
def log_rebake_errors(uploads_skipped_because_of_error)
return if uploads_skipped_because_of_error.empty?
puts "Skipped the following uploads due to error:", ""
uploads_skipped_because_of_error.each do |message|
puts message
end
end
def mark_specific_uploads_as_secure_no_login_required(upload_ids_to_mark_as_secure)
return if upload_ids_to_mark_as_secure.empty?
puts "Marking #{upload_ids_to_mark_as_secure.length} uploads as secure because their first post contains secure media."
Upload.where(id: upload_ids_to_mark_as_secure).update_all(secure: true)
puts "Finished marking uploads as secure."
end
def update_acls_and_rebake_upload_posts(uploads_with_supported_media, mark_secure_in_loop_because_no_login_required)
upload_ids_to_mark_as_secure = []
uploads_skipped_because_of_error = []
i = 0
uploads_with_supported_media.find_each(batch_size: 50) do |upload_with_supported_media|
RakeHelpers.print_status_with_label("Updating ACL for upload.......", i, uploads_with_supported_media.count)
Discourse.store.update_upload_ACL(upload_with_supported_media)
RakeHelpers.print_status_with_label("Rebaking posts for upload.....", i, uploads_with_supported_media.count)
begin
upload_with_supported_media.posts.each { |post| post.rebake! }
if mark_secure_in_loop_because_no_login_required
upload_ids_to_mark_as_secure << UploadSecurity.new(upload_with_supported_media).should_be_secure?
end
rescue => e
uploads_skipped_because_of_error << "#{upload_with_supported_media.original_filename} (#{upload_with_supported_media.url}) #{e.message}"
end
i += 1
end
RakeHelpers.print_status_with_label("Rebaking complete! ", i, uploads_with_supported_media.count)
puts ""
[upload_ids_to_mark_as_secure, uploads_skipped_because_of_error]
end
def inline_uploads(post)
replaced = false
original_raw = post.raw
post.raw = post.raw.gsub(/(\((\/uploads\S+).*\))/) do
upload = Upload.find_by(url: $2)
if !upload
data = Upload.extract_url($2)
if data && sha1 = data[2]
upload = Upload.find_by(sha1: sha1)
if !upload
sha_map = JSON.parse(post.custom_fields["UPLOAD_SHA1_MAP"] || "{}")
if mapped_sha = sha_map[sha1]
upload = Upload.find_by(sha1: mapped_sha)
end
end
end
end
result = $1
if upload&.id
result.sub!($2, upload.short_url)
replaced = true
else
puts "Upload not found #{$2} in Post #{post.id} - #{post.url}"
end
result
end
if replaced
puts "Corrected image urls in #{post.full_url} raw backup stored in custom field"
post.custom_fields["BACKUP_POST_RAW"] = original_raw
post.save_custom_fields
post.save!(validate: false)
post.rebake!
end
end
def inline_img_tags(post)
replaced = false
original_raw = post.raw
post.raw = post.raw.gsub(/(<img\s+src=["'](\/uploads\/[^'"]*)["'].*>)/i) do
next if $2.include?("..")
upload = Upload.find_by(url: $2)
if !upload
data = Upload.extract_url($2)
if data && sha1 = data[2]
upload = Upload.find_by(sha1: sha1)
end
end
if !upload
local_file = File.join(Rails.root, "public", $2)
if File.exist?(local_file)
File.open(local_file) do |f|
upload = UploadCreator.new(f, "image").create_for(post.user_id)
end
end
end
if upload
replaced = true
"![image](#{upload.short_url})"
else
puts "skipping missing upload in #{post.full_url} #{$1}"
$1
end
end
if replaced
puts "Corrected image urls in #{post.full_url} raw backup stored in custom field"
post.custom_fields["BACKUP_POST_RAW"] = original_raw
post.save_custom_fields
post.save!(validate: false)
post.rebake!
end
end
def fix_relative_links
Post.where('raw like ?', '%](/uploads%').find_each do |post|
inline_uploads(post)
end
Post.where("raw ilike ?", '%<img%src=%/uploads/%>%').find_each do |post|
inline_img_tags(post)
end
end
task "uploads:fix_relative_upload_links" => :environment do
if RailsMultisite::ConnectionManagement.current_db != "default"
fix_relative_links
else
RailsMultisite::ConnectionManagement.each_connection do
fix_relative_links
end
end
end