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-rw-r--r--mod/mod-ci-github.cxx124
1 files changed, 63 insertions, 61 deletions
diff --git a/mod/mod-ci-github.cxx b/mod/mod-ci-github.cxx
index 0d92f8a..6782e71 100644
--- a/mod/mod-ci-github.cxx
+++ b/mod/mod-ci-github.cxx
@@ -33,51 +33,6 @@
// https://en.wikipedia.org/wiki/HMAC#Definition. A suitable implementation
// is provided by OpenSSL.
-// @@ Move to function bodies below.
-
-// @@ Authenticating to use the API
-//
-// There are three types of authentication:
-//
-// 1) Authenticating as an app. Used to access parts of the API concerning
-// the app itself such as getting the list of installations. (Need to
-// authenticate as an app as part of authenticating as an app
-// installation.)
-//
-// 2) Authenticating as an app installation (on a user or organisation
-// account). Used to access resources belonging to the user/repository
-// or organisation the app is installed in.
-//
-// 3) Authenticating as a user. Used to perform actions as the user.
-//
-// We need to authenticate as an app installation (2).
-//
-// How to authenticate as an app installation
-//
-// Reference:
-// https://docs.github.com/en/apps/creating-github-apps/authenticating-with-a-github-app/authenticating-as-a-github-app-installation
-//
-// The final authentication token we need is an installation access token
-// (IAT), valid for one hour, which we will pass in the `Authentication`
-// header of our Github API requests:
-//
-// Authorization: Bearer <INSTALLATION_ACCESS_TOKEN>
-//
-// To generate an IAT:
-//
-// - Generate a JSON Web Token (JWT)
-//
-// - Get the installation ID. This will be included in the webhook request
-// in our case
-//
-// - Send a POST to /app/installations/<INSTALLATION_ID>/access_tokens
-// which includes the JWT (`Authorization: Bearer <JWT>`). The response
-// will include the IAT. Can pass the name of the repository included in
-// the webhook request to restrict access, otherwise we get access to all
-// repos covered by the installation if installed on an organisation for
-// example.
-//
-
using namespace std;
using namespace butl;
using namespace web;
@@ -108,7 +63,7 @@ namespace brep
HANDLER_DIAG;
- // @@ TODO: diable service is HMAC is not specified in config.
+ // @@ TODO: disable service if HMAC is not specified in config.
//
if (false)
throw invalid_request (404, "CI request submission disabled");
@@ -116,6 +71,8 @@ namespace brep
// Process headers.
//
string event;
+ // @@ TMP Shouldn't we also error<< in some of these header problem cases?
+ //
{
bool content_type (false);
@@ -233,13 +190,13 @@ namespace brep
}
}
- bool
- handle_check_suite_request (check_suite_event) const
+ bool ci_github::
+ handle_check_suite_request (check_suite_event cs) const
{
cout << "<check_suite webhook>" << endl << cs << endl;
installation_access_token iat (
- obtain_installation_access_token (generate_jwt ()));
+ obtain_installation_access_token (cs.installation.id, generate_jwt ()));
cout << endl << "<installation_access_token>" << endl << iat << endl;
@@ -380,7 +337,7 @@ namespace brep
}
}
- void string
+ string ci_github::
generate_jwt () const
{
string jwt;
@@ -389,33 +346,76 @@ namespace brep
// Set token's "issued at" time 60 seconds in the past to combat clock
// drift (as recommended by GitHub).
//
- jwt = gen_jwt (
- *options_,
- options_->ci_github_app_private_key (),
- to_string (options_->ci_github_app_id ()),
- chrono::seconds (options_->ci_github_jwt_validity_period ()),
- chrono::seconds (60));
+ jwt = brep::generate_jwt (
+ *options_,
+ options_->ci_github_app_private_key (),
+ to_string (options_->ci_github_app_id ()),
+ chrono::seconds (options_->ci_github_jwt_validity_period ()),
+ chrono::seconds (60));
cout << "JWT: " << jwt << endl;
}
catch (const system_error& e)
{
+ HANDLER_DIAG;
+
fail << "unable to generate JWT (errno=" << e.code () << "): " << e;
}
+
+ return jwt;
}
- // Authenticate to GitHub as an app installation.
+ // There are three types of GitHub API authentication:
+ //
+ // 1) Authenticating as an app. Used to access parts of the API concerning
+ // the app itself such as getting the list of installations. (Need to
+ // authenticate as an app as part of authenticating as an app
+ // installation.)
+ //
+ // 2) Authenticating as an app installation (on a user or organisation
+ // account). Used to access resources belonging to the user/repository
+ // or organisation the app is installed in.
+ //
+ // 3) Authenticating as a user. Used to perform actions as the user.
+ //
+ // We need to authenticate as an app installation (2).
+ //
+ // How to authenticate as an app installation
+ //
+ // Reference:
+ // https://docs.github.com/en/apps/creating-github-apps/authenticating-with-a-github-app/authenticating-as-a-github-app-installation
+ //
+ // The final authentication token we need is an installation access token
+ // (IAT), valid for one hour, which we will pass in the `Authentication`
+ // header of our Github API requests:
//
- gh::installation_access_token
- obtain_installation_access_token (string jwt) const
+ // Authorization: Bearer <INSTALLATION_ACCESS_TOKEN>
+ //
+ // To generate an IAT:
+ //
+ // - Generate a JSON Web Token (JWT)
+ //
+ // - Get the installation ID. This will be included in the webhook request
+ // in our case
+ //
+ // - Send a POST to /app/installations/<INSTALLATION_ID>/access_tokens which
+ // includes the JWT (`Authorization: Bearer <JWT>`). The response will
+ // include the IAT. Can pass the name of the repository included in the
+ // webhook request to restrict access, otherwise we get access to all
+ // repos covered by the installation if installed on an organisation for
+ // example.
+ //
+ installation_access_token ci_github::
+ obtain_installation_access_token (uint64_t iid, string jwt) const
{
+ HANDLER_DIAG;
+
installation_access_token iat;
try
{
// API endpoint.
//
- string ep ("app/installations/" + to_string (cs.installation.id) +
- "/access_tokens");
+ string ep ("app/installations/" + to_string (iid) + "/access_tokens");
int sc (github_post (iat, ep, strings {"Authorization: Bearer " + jwt}));
@@ -452,6 +452,8 @@ namespace brep
fail << "unable to get installation access token (errno=" << e.code ()
<< "): " << e.what ();
}
+
+ return iat;
}
// The rest is GitHub request/response type parsing and printing.