gitlab-org--gitlab-foss/app/models/blob.rb
Stan Hu 0fdfd2dd6e Fix Error 500 when viewing a blob with binary characters after the 1024-byte mark
Here was the problem:

1. When determining whether a given blob is viewable text, gitlab_git reads the first 1024 bytes and checks with Linguist whether it is a text or binary file.
2. If the blob is text, GitLab will attempt to display it.
3. However, if the text has binary characters after the first 1024 bytes, then GitLab will attempt to load the entire contents, but the encoding will be ASCII-8BIT since there are binary characters.
4. The Error 500 results when GitLab attempts to display a mix UTF-8 and ASCII-8BIT.

To fix this, we load as much data as we are willing to display so that the detection will work properly. Requires
an update to gitlab_git: gitlab-org/gitlab_git!86

Closes #13826
2016-06-12 07:36:25 -07:00

45 lines
1 KiB
Ruby

# Blob is a Rails-specific wrapper around Gitlab::Git::Blob objects
class Blob < SimpleDelegator
CACHE_TIME = 60 # Cache raw blobs referred to by a (mutable) ref for 1 minute
CACHE_TIME_IMMUTABLE = 3600 # Cache blobs referred to by an immutable reference for 1 hour
# Wrap a Gitlab::Git::Blob object, or return nil when given nil
#
# This method prevents the decorated object from evaluating to "truthy" when
# given a nil value. For example:
#
# blob = Blob.new(nil)
# puts "truthy" if blob # => "truthy"
#
# blob = Blob.decorate(nil)
# puts "truthy" if blob # No output
def self.decorate(blob)
return if blob.nil?
new(blob)
end
def no_highlighting?
size && size > 1.megabyte
end
def only_display_raw?
size && truncated?
end
def svg?
text? && language && language.name == 'SVG'
end
def to_partial_path
if lfs_pointer?
'download'
elsif image? || svg?
'image'
elsif text?
'text'
else
'download'
end
end
end