From d7de22c61fad4218a31428f4f93c5fb890c5a593 Mon Sep 17 00:00:00 2001 From: "Jonathan A. Sternberg" Date: Thu, 3 Oct 2024 12:12:40 -0500 Subject: [PATCH] build: raise maximum size limit for dockerfile and fix size check Raise the maximum size limit for the dockerfile and correct the size check. The size check was intended to use the size attribute from the file stat, but the original gogo version confused the `Size()` method (which returned the size of the proto message) with the `Size` attribute (which was named `Size_`). During the conversion, we noticed the mistake but kept the incorrect behavior for the sake of keeping the conversion simple. This also raises the maximum limit because 512 kB is likely a bit too conservative. The limit has been raised to 2 MB and the limit has been included in the error message. Signed-off-by: Jonathan A. Sternberg --- build/url.go | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/build/url.go b/build/url.go index 60cf28e6..9188b1b0 100644 --- a/build/url.go +++ b/build/url.go @@ -7,13 +7,15 @@ import ( "github.com/docker/buildx/driver" "github.com/docker/buildx/util/progress" + "github.com/docker/go-units" "github.com/moby/buildkit/client" "github.com/moby/buildkit/client/llb" gwclient "github.com/moby/buildkit/frontend/gateway/client" "github.com/pkg/errors" - "google.golang.org/protobuf/proto" ) +const maxDockerfileSize = 2 * 1024 * 1024 // 2 MB + func createTempDockerfileFromURL(ctx context.Context, d *driver.DriverHandle, url string, pw progress.Writer) (string, error) { c, err := driver.Boot(ctx, ctx, d, pw) if err != nil { @@ -44,8 +46,8 @@ func createTempDockerfileFromURL(ctx context.Context, d *driver.DriverHandle, ur if err != nil { return nil, err } - if proto.Size(stat) > 512*1024 { - return nil, errors.Errorf("Dockerfile %s bigger than allowed max size", url) + if stat.Size > maxDockerfileSize { + return nil, errors.Errorf("Dockerfile %s bigger than allowed max size (%s)", url, units.HumanSize(maxDockerfileSize)) } dt, err := ref.ReadFile(ctx, gwclient.ReadRequest{