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https://github.com/rclone/rclone
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bc8f0208aa
Before this change the rest package would forward all the headers on
an HTTP redirect, including the Authorization: header. This caused
problems when forwarded to a signed S3 URL ("Only one auth mechanism
allowed") as well as being a potential security risk.
After we use the go1.8+ mechanism for doing this instead of using our
own which does it correctly removing the Authorization: header when
redirecting to a different host.
This hasn't fixed the behaviour for rclone compiled with go1.7.
Fixes #2635
34 lines
680 B
Go
34 lines
680 B
Go
//+build !go1.8
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package rest
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import (
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"net/http"
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"github.com/pkg/errors"
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)
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// ClientWithHeaderReset makes a new http client which resets the
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// headers passed in on redirect
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//
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// This is only needed for go < go1.8
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func ClientWithHeaderReset(c *http.Client, headers map[string]string) *http.Client {
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if len(headers) == 0 {
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return c
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}
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clientCopy := *c
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clientCopy.CheckRedirect = func(req *http.Request, via []*http.Request) error {
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if len(via) >= 10 {
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return errors.New("stopped after 10 redirects")
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}
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// Reset the headers in the new request
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for k, v := range headers {
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if v != "" {
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req.Header.Set(k, v)
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}
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}
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return nil
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}
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return &clientCopy
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}
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