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* [docs] Add docs/users/authentication.md * edits * Add link to README.md * Address CR comments * Fixup Co-authored-by: Robert Schumacher <ras0219@outlook.com>
80 lines
3.0 KiB
Markdown
80 lines
3.0 KiB
Markdown
# Authentication for Source Code
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**The latest version of this documentation is available on [GitHub](https://github.com/Microsoft/vcpkg/tree/master/docs/users/authentication.md).**
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Registries and `vcpkg_from_git()` directly use the git command line tools to fetch remote resources. Some of these resources may be protected from anonymous access and need authentication or credentials.
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The strategies below all seek to achieve the same fundamental goal: `git clone https://....` should succeed without interaction. This enables vcpkg to be separated from the specifics of your authentication scheme, ensuring forwards compatibility with any additional security improvements in the future.
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## Pre-seed git credentials
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You can pre-seed git credentials via `git credential approve`:
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Powershell:
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```powershell
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"url=https://github.com`npath=Microsoft/vcpkg`nusername=unused`npassword=$MY_PAT`n" | git credential approve
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```
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Bash:
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```sh
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echo "url=https://github.com"$'\n'"path=Microsoft/vcpkg"$'\n'"username=unused"$'\n'"password=$MY_PAT"$'\n' | git credential approve
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```
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## Bearer auth
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For systems which need bearer auth, you can use `git config`:
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**Note: you must make these config changes with `--global`**
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```
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git config --global --unset-all http.<uri>.extraheader
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git config --global http.<uri>.extraheader "AUTHORIZATION: bearer <System_AccessToken>"
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```
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The `<uri>` can be filled in with a variety of options, documented in https://git-scm.com/docs/git-config#Documentation/git-config.txt-httplturlgt. For example, `https://dev.azure.com/MYORG/`.
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(Original Source: https://github.com/Microsoft/azure-pipelines-agent/issues/1601#issuecomment-394511048).
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**Note for Azure DevOps users:** You may need to enable access via Job authorization scope https://docs.microsoft.com/en-us/azure/devops/pipelines/process/access-tokens?view=azure-devops&tabs=yaml#job-authorization-scope. You may also need to "reference" the repo in your yaml via:
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```yaml
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resources:
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repositories:
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- repository: <FRIENDLYNAME>
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type: git
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name: <ORG>/<REPO>
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tag: tags/<TAG>
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...
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jobs:
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- job: Build
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uses:
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repositories: [<FRIENDLYNAME>]
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```
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## Pass credentials in an environment variable (not recommended)
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Using `VCPKG_KEEP_ENV_VARS` or `VCPKG_ENV_PASSTHROUGH_UNTRACKED`, we can smuggle credential info via another var like `MY_TOKEN_VAR`.
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```sh
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export VCPKG_KEEP_ENV_VARS=MY_TOKEN_VAR
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export MY_TOKEN_VAR=abc123
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```
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This can then be used in your private ports:
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```cmake
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# some/private/portfile.cmake
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set(MY_TOKEN_VAR "")
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if(DEFINED ENV{MY_TOKEN_VAR})
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set(MY_TOKEN_VAR "$ENV{MY_TOKEN_VAR}@")
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endif()
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vcpkg_from_git(
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URLS "https://${MY_TOKEN_VAR}host.com/normal/url/path"
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...
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)
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```
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```cmake
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# some/other/private/portfile.cmake
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vcpkg_from_github(
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AUTHORIZATION_TOKEN "$ENV{MY_TOKEN_VAR}"
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)
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```
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For private ports, we recommend using `vcpkg_from_git()` instead of `vcpkg_from_github()` and the pre-seeding method above.
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