[Bug 2077805] Re: "apt download" fails for ESM packages

[Julian Andres Klode]

The Pro client is responsible for setting the credentials, that said
this may be the correct behavior, it may also depend on the umask of
your root user.

As in, it makes sense to protect the credentials from non-root users,
you don't want e.g. some daemon to gain access to it and leak it.

** Package changed: apt (Ubuntu) => ubuntu-advantage-tools (Ubuntu)

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Title:
  "apt download" fails for ESM packages

Status in ubuntu-advantage-tools package in Ubuntu:
  Invalid

Bug description:
  "apt download" fails when attempting to download an app from the ESM
  repos. "sudo apt download" is necessary.

  $ apt download hello
  Ign:1 https://esm.ubuntu.com/apps/ubuntu jammy-apps-security/main amd64 hello amd64 2.10-2ubuntu4+esm1
  Ign:1 https://esm.ubuntu.com/apps/ubuntu jammy-apps-security/main amd64 hello amd64 2.10-2ubuntu4+esm1
  Ign:1 https://esm.ubuntu.com/apps/ubuntu jammy-apps-security/main amd64 hello amd64 2.10-2ubuntu4+esm1
  Err:1 https://esm.ubuntu.com/apps/ubuntu jammy-apps-security/main amd64 hello amd64 2.10-2ubuntu4+esm1
    401  Unauthorized [IP: 2620:2d:4000:1::2e 443]
  E: Failed to fetch https://esm.ubuntu.com/infra/ubuntu/pool/main/h/hello/hello_2.10-2ubuntu4%2besm1_amd64.deb  401  Unauthorized [IP: 2620:2d:4000:1::2e 443]

  $ sudo apt download hello
  Get:1 https://esm.ubuntu.com/apps/ubuntu jammy-apps-security/main amd64 hello amd64 2.10-2ubuntu4+esm1 [26.5 kB]
  Fetched 26.5 kB in 10s (2,610 B/s)

  A wild stab in the dark: the credentials to access the ESM servers are
  not readable by unpriveleged users.

  ProblemType: Bug
  DistroRelease: Ubuntu 22.04
  Package: apt 2.4.12
  ProcVersionSignature: Ubuntu 6.8.0-38.38~22.04.1-generic 6.8.8
  Uname: Linux 6.8.0-38-generic x86_64
  NonfreeKernelModules: nvidia_modeset nvidia
  ApportVersion: 2.20.11-0ubuntu82.6
  Architecture: amd64
  CasperMD5CheckResult: unknown
  CurrentDesktop: MATE
  Date: Sat Aug 24 19:58:06 2024
  SourcePackage: apt
  UpgradeStatus: No upgrade log present (probably fresh install)

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