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// Copyright 2021 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package asymkey
import (
"context"
"fmt"
"strings"
"code.gitea.io/gitea/models/db"
"code.gitea.io/gitea/models/perm"
user_model "code.gitea.io/gitea/models/user"
"code.gitea.io/gitea/modules/setting"
"code.gitea.io/gitea/modules/util"
)
// AddPrincipalKey adds new principal to database and authorized_principals file.
func AddPrincipalKey(ctx context.Context, ownerID int64, content string, authSourceID int64) (*PublicKey, error) {
dbCtx, committer, err := db.TxContext(ctx)
if err != nil {
return nil, err
}
defer committer.Close()
// Principals cannot be duplicated.
has, err := db.GetEngine(dbCtx).
Where("content = ? AND type = ?", content, KeyTypePrincipal).
Get(new(PublicKey))
if err != nil {
return nil, err
} else if has {
return nil, ErrKeyAlreadyExist{0, "", content}
}
key := &PublicKey{
OwnerID: ownerID,
Name: content,
Content: content,
Mode: perm.AccessModeWrite,
Type: KeyTypePrincipal,
LoginSourceID: authSourceID,
}
if err = db.Insert(dbCtx, key); err != nil {
return nil, fmt.Errorf("addKey: %w", err)
}
if err = committer.Commit(); err != nil {
return nil, err
}
committer.Close()
return key, RewriteAllPrincipalKeys(ctx)
}
// CheckPrincipalKeyString strips spaces and returns an error if the given principal contains newlines
func CheckPrincipalKeyString(ctx context.Context, user *user_model.User, content string) (_ string, err error) {
if setting.SSH.Disabled {
return "", db.ErrSSHDisabled{}
}
content = strings.TrimSpace(content)
if strings.ContainsAny(content, "\r\n") {
return "", util.NewInvalidArgumentErrorf("only a single line with a single principal please")
}
// check all the allowed principals, email, username or anything
// if any matches, return ok
for _, v := range setting.SSH.AuthorizedPrincipalsAllow {
switch v {
case "anything":
return content, nil
case "email":
emails, err := user_model.GetEmailAddresses(ctx, user.ID)
if err != nil {
return "", err
}
for _, email := range emails {
if !email.IsActivated {
continue
}
if content == email.Email {
return content, nil
}
}
case "username":
if content == user.Name {
return content, nil
}
}
}
return "", fmt.Errorf("didn't match allowed principals: %s", setting.SSH.AuthorizedPrincipalsAllow)
}
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