diff options
Diffstat (limited to 'identity/version.go')
-rw-r--r-- | identity/version.go | 105 |
1 files changed, 105 insertions, 0 deletions
diff --git a/identity/version.go b/identity/version.go new file mode 100644 index 00000000..f76ec4c5 --- /dev/null +++ b/identity/version.go @@ -0,0 +1,105 @@ +package identity + +import ( + "crypto/rand" + "encoding/json" + "fmt" + "strings" + + "github.com/MichaelMure/git-bug/repository" + "github.com/MichaelMure/git-bug/util/git" + + "github.com/MichaelMure/git-bug/util/lamport" + "github.com/MichaelMure/git-bug/util/text" +) + +type Version struct { + // Private field so not serialized + commitHash git.Hash + + // The lamport time at which this version become effective + // The reference time is the bug edition lamport clock + Time lamport.Time `json:"time"` + + Name string `json:"name"` + Email string `json:"email"` + Login string `json:"login"` + AvatarUrl string `json:"avatar_url"` + + // The set of keys valid at that time, from this version onward, until they get removed + // in a new version. This allow to have multiple key for the same identity (e.g. one per + // device) as well as revoke key. + Keys []Key `json:"pub_keys"` + + // This optional array is here to ensure a better randomness of the identity id to avoid collisions. + // It has no functional purpose and should be ignored. + // It is advised to fill this array if there is not enough entropy, e.g. if there is no keys. + Nonce []byte `json:"nonce,omitempty"` +} + +func (v *Version) Validate() error { + if text.Empty(v.Name) && text.Empty(v.Login) { + return fmt.Errorf("either name or login should be set") + } + + if strings.Contains(v.Name, "\n") { + return fmt.Errorf("name should be a single line") + } + + if !text.Safe(v.Name) { + return fmt.Errorf("name is not fully printable") + } + + if strings.Contains(v.Login, "\n") { + return fmt.Errorf("login should be a single line") + } + + if !text.Safe(v.Login) { + return fmt.Errorf("login is not fully printable") + } + + if strings.Contains(v.Email, "\n") { + return fmt.Errorf("email should be a single line") + } + + if !text.Safe(v.Email) { + return fmt.Errorf("email is not fully printable") + } + + if v.AvatarUrl != "" && !text.ValidUrl(v.AvatarUrl) { + return fmt.Errorf("avatarUrl is not a valid URL") + } + + if len(v.Nonce) > 64 { + return fmt.Errorf("nonce is too big") + } + + return nil +} + +// Write will serialize and store the Version as a git blob and return +// its hash +func (v *Version) Write(repo repository.Repo) (git.Hash, error) { + data, err := json.Marshal(v) + + if err != nil { + return "", err + } + + hash, err := repo.StoreData(data) + + if err != nil { + return "", err + } + + return hash, nil +} + +func makeNonce(len int) []byte { + result := make([]byte, len) + _, err := rand.Read(result) + if err != nil { + panic(err) + } + return result +} |