Closed
Conversation
Member
Author
jnummelin
force-pushed
the
fix/autopilot-replace-file
branch
from
b792e50 to
4027037
Compare
This is to mitigate cases like k0sproject#4296 By default grab tries to resume the download if the file name determined from either the url or from content-type headers already exists. This makes things go side ways, if the existing file is smaller than the new one, the old content would still be there and only the "extra" new bytes would get written. I.e. the download would be "resumed". 🤦 This is probably not a fix for the root cause in k0sproject#4296 as the only way I've been able to make grab fail with `bad content length` is by crafting a custom http server that maliciously borks `Content-Length` header. This is a minimal possible fix that we can easily backport. @twz123 is already working on bigger refactoring of autopilot download functionality that gets rid of grab. Grab seems to bring more (bad) surprises than real benefits. In the end, we just download files and we should pretty much always just replace them. No need for full library dependecy for that. Signed-off-by: Jussi Nummelin <jnummelin@mirantis.com>
jnummelin
force-pushed
the
fix/autopilot-replace-file
branch
from
4027037 to
ff0da08
Compare
Member
Author
|
Superseded by #5034 |
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
1 participant
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
Description
This is to mitigate cases like #4296
By default grab tries to resume the download if the file name determined from either the url or from content-type headers already exists. This makes things go side ways, if the existing file is smaller than the new one, the old content would still be there and only the "extra" new bytes would get written. I.e. the download would be "resumed". 🤦
This is probably not a fix for the root cause in #4296 as the only way I've been able to make grab fail with
bad content lengthis by crafting a custom http server that maliciously borksContent-Lengthheader.This is a minimal possible fix that we can easily backport. @twz123 is already working on bigger refactoring of autopilot download functionality that gets rid of grab. Grab seems to bring more (bad) surprises than real benefits. In the end, we just download files and we should pretty much always just replace them. No need for full library dependecy for that.
Fixes # (issue)
Type of change
How Has This Been Tested?
Checklist: