Mercurial > gemma
view pkg/auth/encode.go @ 4723:baabc2b2f094
Avoid creating user profiles without matching role
The INSTEAD OF triggers on users.list_users did that already, but
profile data coming e.g. via restoring a dump had been added also
if there was no matching database role in the cluster.
This also unifies the errors occuring on creation of users with existing
role names that differed between roles with and without profile before.
Note this is no referential integrity. A dropped role still leaves an
orphaned profile behind.
author | Tom Gottfried <tom@intevation.de> |
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date | Thu, 17 Oct 2019 18:56:59 +0200 |
parents | 91f4b3f56ce2 |
children | 6270951dda28 |
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// This is Free Software under GNU Affero General Public License v >= 3.0 // without warranty, see README.md and license for details. // // SPDX-License-Identifier: AGPL-3.0-or-later // License-Filename: LICENSES/AGPL-3.0.txt // // Copyright (C) 2018 by via donau // – Österreichische Wasserstraßen-Gesellschaft mbH // Software engineering by Intevation GmbH // // Author(s): // * Sascha L. Teichmann <sascha.teichmann@intevation.de> package auth import ( "encoding/binary" "io" ) // BinReader is a io.Reader to support an error tolerant way // to read big endian encoded binary data. type BinReader struct { io.Reader // Err is the first encountered error. Err error } // Read implements io.Reader without any endian awareness. func (r *BinReader) Read(buf []byte) (int, error) { if r.Err != nil { return 0, r.Err } var n int n, r.Err = r.Read(buf) return n, r.Err } // ReadBin reads big endian encodes binary data into x. // If an error was encountered before no data is read. func (r *BinReader) ReadBin(x interface{}) { if r.Err == nil { r.Err = binary.Read(r.Reader, binary.BigEndian, x) } } // ReadString reads a big endian encoded string from // the underlying io.Reader into *s. // If an error was encountered before no data is read // and *s is unmodified. func (r *BinReader) ReadString(s *string) { if r.Err != nil { return } var l uint32 if r.Err = binary.Read(r.Reader, binary.BigEndian, &l); r.Err != nil { return } b := make([]byte, l) if r.Err = binary.Read(r.Reader, binary.BigEndian, b); r.Err != nil { return } *s = string(b) } // BinWriter is a io.Writer to support an error tolerant way // to write big endian encoded binary data. type BinWriter struct { io.Writer // Err is the first encountered error. Err error } // Write implements io.Writer without any endian awareness. func (w *BinWriter) Write(buf []byte) (int, error) { if w.Err != nil { return 0, w.Err } var n int n, w.Err = w.Writer.Write(buf) return n, w.Err } // WriteBin writes x big endian encoded to the underlying io.Writer. // If an error was encountered before no data is written. func (w *BinWriter) WriteBin(x interface{}) { if w.Err == nil { w.Err = binary.Write(w.Writer, binary.BigEndian, x) } } // WriteString writes a big endian encoded string to // the underlying io.Writer. // If an error was encountered before no data is written. func (w *BinWriter) WriteString(s string) { if w.Err == nil { w.Err = binary.Write(w.Writer, binary.BigEndian, uint32(len(s))) } if w.Err == nil { w.Err = binary.Write(w.Writer, binary.BigEndian, []byte(s)) } }