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Comments (10)

mruoss avatar mruoss commented on May 24, 2024

Hi @danieldocki

What did you pass to the generate() funciton, a %GcsSignedUrl.Client{} or %GcsSignedUrl.SignBlob.OAuthConfig{} object?

from gcs_signed_url.

danieldocki avatar danieldocki commented on May 24, 2024 
defmodule App.Storage do
  @bucket "my-bucket"

  def url(%{key: key, checksum: checkum, content_type: content_type}) do
    GcsSignedUrl.generate(
      client(),
      @bucket,
      key,
      verb: "GET",
      md5_digest: checkum,
      content_type: content_type,
      expires: GcsSignedUrl.hours_after(3)
    )
  end

  defp client do
    "./config/gcs.json"
    |> Path.expand()
    |> File.read!()
    |> Poison.decode!()
    |> GcsSignedUrl.Client.load()
  end
end

from gcs_signed_url.

mruoss avatar mruoss commented on May 24, 2024

Version 0.4.0 of gcs_signed_url?

from gcs_signed_url.

danieldocki avatar danieldocki commented on May 24, 2024

Yes!

from gcs_signed_url.

mruoss avatar mruoss commented on May 24, 2024

Strange! I just ran the exact same code as you, the resulting URL works. What elixir / erlang versions are you on? But then again the error says the signature was not base64 encoded and I don't see this being changed between versions. Is it possible the URL gets changed after generating? escaped, some chars missing?

from gcs_signed_url.

danieldocki avatar danieldocki commented on May 24, 2024

What elixir / erlang versions are you on?

❯ elixir -v
Erlang/OTP 22 [erts-10.6.4] [source] [64-bit] [smp:4:4] [ds:4:4:10] [async-threads:1] [hipe]

Elixir 1.10.1 (compiled with Erlang/OTP 22)

This is one of the generated URL's

https://storage.googleapis.com/deliveryvip/8w28c777c1vafqpmhkrqwhzf6m9p?Expires=1589474503&GoogleAccessId=deliveryvip%40deliveryvip-208318.iam.gserviceaccount.com&Signature=GFMgGpENQba23aTreJ2l3gsIjNWZjbs4HtMlTE+4eqmaZvhpwvcy1O68MIRHN8uaYNn0USdVAL0sdGu7EfvgPfM7NDz48Y+d7JUvZ+NzIjRRBa/9cvasn28awoRTwnU6SZgo6Lyv3Lsyt5GMGq6nPmxJNXROVh8YhIg4WmBxrUyevQzwuIGzNu87R4Wnqx+wLQmNf99IdA3YcWESAvKaseEOQhDJIsB7e0D6h5/ueHTW55OUiOgOPeIAWjxYWOVmVYCeV38QPn4R+VJjm/PzISBZpgkpsryUFA181ZC6RBmd4hM3mXXC/ogo9ftRnb/FGhVi10z9MHzv7J6HvcgVdA==

from gcs_signed_url.

mruoss avatar mruoss commented on May 24, 2024

So I'm using CURL to make a request to the URL you generated. Obviously I don't know the correct values for the two headers content-md5 and content-type. But here's what I get:

curl --request GET \
  --url 'https://storage.googleapis.com/deliveryvip/8w28c777c1vafqpmhkrqwhzf6m9p?Expires=1589474503&GoogleAccessId=deliveryvip%40deliveryvip-208318.iam.gserviceaccount.com&Signature=GFMgGpENQba23aTreJ2l3gsIjNWZjbs4HtMlTE%2B4eqmaZvhpwvcy1O68MIRHN8uaYNn0USdVAL0sdGu7EfvgPfM7NDz48Y%2Bd7JUvZ%2BNzIjRRBa%2F9cvasn28awoRTwnU6SZgo6Lyv3Lsyt5GMGq6nPmxJNXROVh8YhIg4WmBxrUyevQzwuIGzNu87R4Wnqx%2BwLQmNf99IdA3YcWESAvKaseEOQhDJIsB7e0D6h5%2FueHTW55OUiOgOPeIAWjxYWOVmVYCeV38QPn4R%2BVJjm%2FPzISBZpgkpsryUFA181ZC6RBmd4hM3mXXC%2Fogo9ftRnb%2FFGhVi10z9MHzv7J6HvcgVdA%3D%3D' \
  --header 'content-md5: ioBVTJHZ/KisuC8CPeAvEQ==' \
  --header 'content-type: application/json'

Response:

<?xml version='1.0' encoding='UTF-8'?><Error><Code>SignatureDoesNotMatch</Code><Message>The request signature we calculated does not match the signature you provided. Check your Google secret key and signing method.</Message><StringToSign>GET
ioBVTJHZ/KisuC8CPeAvEQ==
application/json
1589474503
/deliveryvip/8w28c777c1vafqpmhkrqwhzf6m9p</StringToSign></Error>

This is what I would expect with wrong headers...

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danieldocki avatar danieldocki commented on May 24, 2024

Thanks, I will search the error. But the gcs.json is correct because I using it in a rails app and is working.

Thank's for your time

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mruoss avatar mruoss commented on May 24, 2024

Yeah no, the URL you get seems correct. Try my CURL command and replace the content-md5 and content-type headers with the correct ones to check.

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mruoss avatar mruoss commented on May 24, 2024

I'm gonna close this if there are no further questions.

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