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bingo: strip photo metadata, identify to Wikimedia

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Photos are served byte-for-byte, and the Commons shot of Medvedkovo
carries GPS coordinates in its EXIF, while the card is meant to stay
city-level. Drop Exif/XMP/IPTC/comment segments from JPEG, text/eXIf
chunks from PNG and EXIF/XMP chunks from WebP on store; pixel data is
left alone and malformed files are rejected.

upload.wikimedia.org answered 429 to the generic agent; its policy asks
for a tool name and contact, so send one.

Add a "re-import all" admin action so photos stored before this change
get re-fetched and stripped.

Assisted-by: Claude:opus-5
This commit is contained in:
Sergei Poljanski 2026-10-10 05:19:49 +04:00
commit 903dc17a75
Signed by: asxpi
GPG key ID: 4F8851660FA4121B
4 changed files with 105 additions and 4 deletions
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7
lib/bingo_admin.rb
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@ -87,10 +87,13 @@ module BingoAdmin
redirect "/admin/bingo/dc/#{dc.id}"
end
# Bulk: import every missing photo from its photo_source_url.
# Bulk: import every missing photo from its photo_source_url, or with
# all=1 re-import every photo that has a source URL.
app.post '/admin/bingo/photos/import' do
ok, failed = 0, []
Bingo::Datacenter.where(photo_key: nil).exclude(photo_source_url: nil).each do |dc|
scope = Bingo::Datacenter.exclude(photo_source_url: nil)
scope = scope.where(photo_key: nil) unless params[:all] == '1'
scope.each do |dc|
dc.update(photo_key: Bingo::Photo.store(dc.slug, Bingo::Photo.fetch(dc.photo_source_url)))
ok += 1
rescue Bingo::Photo::Error => e