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gitea/routers/api/v1/misc/signing.go

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Sign merges, CRUD, Wiki and Repository initialisation with gpg key (#7631) This PR fixes #7598 by providing a configurable way of signing commits across the Gitea instance. Per repository configurability and import/generation of trusted secure keys is not provided by this PR - from a security PoV that's probably impossible to do properly. Similarly web-signing, that is asking the user to sign something, is not implemented - this could be done at a later stage however. ## Features - [x] If commit.gpgsign is set in .gitconfig sign commits and files created through repofiles. (merges should already have been signed.) - [x] Verify commits signed with the default gpg as valid - [x] Signer, Committer and Author can all be different - [x] Allow signer to be arbitrarily different - We still require the key to have an activated email on Gitea. A more complete implementation would be to use a keyserver and mark external-or-unactivated with an "unknown" trust level icon. - [x] Add a signing-key.gpg endpoint to get the default gpg pub key if available - Rather than add a fake web-flow user I've added this as an endpoint on /api/v1/signing-key.gpg - [x] Try to match the default key with a user on gitea - this is done at verification time - [x] Make things configurable? - app.ini configuration done - [x] when checking commits are signed need to check if they're actually verifiable too - [x] Add documentation I have decided that adjusting the docker to create a default gpg key is not the correct thing to do and therefore have not implemented this.
2019-10-16 09:42:42 -04:00
package misc
import (
"fmt"
"net/http"
"code.gitea.io/gitea/models"
"code.gitea.io/gitea/modules/context"
"code.gitea.io/gitea/modules/log"
)
// SigningKey returns the public key of the default signing key if it exists
func SigningKey(ctx *context.Context) {
// swagger:operation GET /signing-key.gpg miscellaneous getSigningKey
// ---
// summary: Get default signing-key.gpg
// produces:
// - text/plain
// responses:
// "200":
// description: "GPG armored public key"
// schema:
// type: string
// swagger:operation GET /repos/{owner}/{repo}/signing-key.gpg repository repoSigningKey
// ---
// summary: Get signing-key.gpg for given repository
// produces:
// - text/plain
// parameters:
// - name: owner
// in: path
// description: owner of the repo
// type: string
// required: true
// - name: repo
// in: path
// description: name of the repo
// type: string
// required: true
// responses:
// "200":
// description: "GPG armored public key"
// schema:
// type: string
path := ""
if ctx.Repo != nil && ctx.Repo.Repository != nil {
path = ctx.Repo.Repository.RepoPath()
}
content, err := models.PublicSigningKey(path)
if err != nil {
ctx.ServerError("gpg export", err)
return
}
_, err = ctx.Write([]byte(content))
if err != nil {
log.Error("Error writing key content %v", err)
ctx.Error(http.StatusInternalServerError, fmt.Sprintf("%v", err))
}
}