telebit/internal/mgmt/authstore/postgresql.go

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package authstore
import (
"context"
"database/sql"
"fmt"
"io/ioutil"
"time"
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"git.rootprojects.org/root/telebit/files"
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"github.com/jmoiron/sqlx"
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// pq injects itself into sql as 'postgres'
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_ "github.com/lib/pq"
)
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var initSQL = "./postgres.init.sql"
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func NewStore(pgURL, initSQL string) (Store, error) {
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// https://godoc.org/github.com/lib/pq
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f, err := files.Open(initSQL)
if nil != err {
return nil, err
}
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dbtype := "postgres"
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sqlBytes, err := ioutil.ReadAll(f)
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if nil != err {
return nil, err
}
ctx, done := context.WithDeadline(context.Background(), time.Now().Add(5*time.Second))
defer done()
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db, err := sql.Open(dbtype, pgURL)
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if err := db.PingContext(ctx); nil != err {
return nil, err
}
if _, err := db.ExecContext(ctx, string(sqlBytes)); nil != err {
return nil, err
}
dbx := sqlx.NewDb(db, dbtype)
return &PGStore{
dbx: dbx,
}, nil
}
type PGStore struct {
dbx *sqlx.DB
}
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func (s *PGStore) SetMaster(secret string) error {
ctx, done := context.WithDeadline(context.Background(), time.Now().Add(5*time.Second))
defer done()
pub := ToPublicKeyString(secret)
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auth := &Authorization{
Slug: "*",
SharedKey: secret,
MachinePPID: secret,
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PublicKey: pub,
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}
err := s.Add(auth)
query := `
UPDATE authorizations SET
machine_ppid=$1,
shared_key=$1,
public_key=$2,
deleted_at='1970-01-01 00:00:00'
WHERE slug = '*'
`
_, err = s.dbx.ExecContext(ctx, query, auth.MachinePPID, auth.PublicKey)
return err
}
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func (s *PGStore) Add(auth *Authorization) error {
ctx, done := context.WithDeadline(context.Background(), time.Now().Add(5*time.Second))
defer done()
tx, err := s.dbx.DB.BeginTx(ctx, &sql.TxOptions{})
if nil != err {
return err
}
query1 := `LOCK TABLE authorizations IN SHARE ROW EXCLUSIVE MODE`
_, err = tx.ExecContext(ctx, query1)
if nil != err {
return err
}
query2 := `
INSERT INTO authorizations (slug, shared_key, public_key)
SELECT $1, $2, $3
WHERE NOT EXISTS (
SELECT slug FROM authorizations WHERE deleted_at = '1970-01-01 00:00:00' AND slug = $1
)
`
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now := time.Now()
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res, err := tx.ExecContext(ctx, query2, auth.Slug, auth.SharedKey, auth.PublicKey)
if nil != err {
return err
}
// PostgreSQL does support RowsAffected(), but not LastInsertId()
if count, _ := res.RowsAffected(); count != 1 {
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// TODO be more sure?
return ErrExists // fmt.Errorf("record not added (probably exists)")
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}
if err := tx.Commit(); nil != err {
return err
}
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auth.CreatedAt = now
auth.UpdatedAt = now
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return nil
}
func (s *PGStore) Set(auth *Authorization) error {
ctx, done := context.WithDeadline(context.Background(), time.Now().Add(5*time.Second))
defer done()
query := `
UPDATE authorizations SET
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machine_ppid = $1,
shared_key = $2,
public_key = $3,
updated_at = 'now'
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WHERE
deleted_at = '1970-01-01 00:00:00'
AND shared_key = $2
AND machine_ppid= ''
`
row, err := s.dbx.ExecContext(ctx, query, auth.MachinePPID, auth.SharedKey, auth.PublicKey)
if nil != err {
return err
}
// PostgreSQL does support RowsAffected()
if count, _ := row.RowsAffected(); count != 1 {
return fmt.Errorf("record exists")
}
return nil
}
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func (s *PGStore) Touch(pub string) error {
ctx, done := context.WithDeadline(context.Background(), time.Now().Add(5*time.Second))
defer done()
query := `
UPDATE authorizations SET
updated_at = 'now'
WHERE deleted_at = '1970-01-01 00:00:00'
AND (public_key = $1 OR slug = $1)
`
row, err := s.dbx.ExecContext(ctx, query, pub)
if nil != err {
return err
}
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// PostgreSQL is one of the databases for which RowsAffected() IS supported
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if count, _ := row.RowsAffected(); count != 1 {
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return ErrNotFound
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}
return nil
}
func (s *PGStore) Active() ([]Authorization, error) {
ctx, done := context.WithDeadline(context.Background(), time.Now().Add(5*time.Second))
defer done()
auths := []Authorization{}
query := `
SELECT * FROM authorizations
WHERE deleted_at = '1970-01-01 00:00:00'
AND updated_at > $1
`
ago15Min := time.Now().Add(-15 * time.Minute)
err := s.dbx.SelectContext(ctx, &auths, query, ago15Min)
if nil != err {
return nil, err
}
return auths, nil
}
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func (s *PGStore) Inactive() ([]Authorization, error) {
ctx, done := context.WithDeadline(context.Background(), time.Now().Add(5*time.Second))
defer done()
auths := []Authorization{}
query := `
SELECT * FROM authorizations
WHERE deleted_at = '1970-01-01 00:00:00'
AND updated_at <= $1
AND slug != '*'
`
ago15Min := time.Now().Add(-15 * time.Minute)
err := s.dbx.SelectContext(ctx, &auths, query, ago15Min)
if nil != err {
return nil, err
}
return auths, nil
}
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func (s *PGStore) Get(id string) (*Authorization, error) {
ctx, done := context.WithDeadline(context.Background(), time.Now().Add(5*time.Second))
defer done()
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query := `
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SELECT * FROM authorizations
WHERE deleted_at = '1970-01-01 00:00:00'
AND (slug = $1 OR public_key = $1 OR public_key = $2)
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`
// if the id is actually the secret, we want the public form
// (we do this to protect against a timing attack)
pubby := ToPublicKeyString(id)
if len(id) > 24 {
id = id[:24]
}
row := s.dbx.QueryRowxContext(ctx, query, id, pubby)
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if nil != row {
auth := &Authorization{}
if err := row.StructScan(auth); nil != err {
fmt.Println("what's wrong here", err)
return nil, err
}
return auth, nil
}
return nil, nil
}
func (s *PGStore) GetBySlug(id string) (*Authorization, error) {
ctx, done := context.WithDeadline(context.Background(), time.Now().Add(5*time.Second))
defer done()
query := `SELECT * FROM authorizations WHERE deleted_at = '1970-01-01 00:00:00' AND slug = $1`
row := s.dbx.QueryRowxContext(ctx, query, id)
if nil != row {
auth := &Authorization{}
if err := row.StructScan(auth); nil != err {
return nil, err
}
return auth, nil
}
return nil, nil
}
func (s *PGStore) GetByPub(id string) (*Authorization, error) {
ctx, done := context.WithDeadline(context.Background(), time.Now().Add(5*time.Second))
defer done()
query := `SELECT * FROM authorizations WHERE deleted_at = '1970-01-01 00:00:00' AND public_key = $1`
row := s.dbx.QueryRowxContext(ctx, query, id)
if nil != row {
auth := &Authorization{}
if err := row.StructScan(auth); nil != err {
return nil, err
}
return auth, nil
}
return nil, nil
}
func (s *PGStore) Delete(auth *Authorization) error {
ctx, done := context.WithDeadline(context.Background(), time.Now().Add(5*time.Second))
defer done()
query := `
UPDATE authorizations SET deleted_at = 'now'
WHERE deleted_at = '1970-01-01 00:00:00' AND slug = $1
`
row, err := s.dbx.ExecContext(ctx, query, auth.Slug)
if nil != err {
return err
}
// PostgreSQL does support RowsAffected()
if count, _ := row.RowsAffected(); count != 1 {
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return fmt.Errorf("record does not exist")
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}
return nil
}
func (s *PGStore) Close() error {
return s.dbx.DB.Close()
}