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package database
import (
"context"
"database/sql"
"fmt"
"os"
"time"
"entgo.io/ent/dialect"
entsql "entgo.io/ent/dialect/sql"
"github.com/crowdsecurity/crowdsec/pkg/csconfig"
"github.com/crowdsecurity/crowdsec/pkg/database/ent"
"github.com/crowdsecurity/crowdsec/pkg/types"
"github.com/go-co-op/gocron"
_ "github.com/go-sql-driver/mysql"
_ "github.com/jackc/pgx/v4/stdlib"
_ "github.com/lib/pq"
_ "github.com/mattn/go-sqlite3"
"github.com/pkg/errors"
log "github.com/sirupsen/logrus"
)
type Client struct {
Ent *ent.Client
CTX context.Context
Log *log.Logger
CanFlush bool
Type string
WalMode *bool
}
func getEntDriver(dbtype string, dbdialect string, dsn string, config *csconfig.DatabaseCfg) (*entsql.Driver, error) {
db, err := sql.Open(dbtype, dsn)
if err != nil {
return nil, err
}
if config.MaxOpenConns == nil {
log.Warningf("MaxOpenConns is 0, defaulting to %d", csconfig.DEFAULT_MAX_OPEN_CONNS)
config.MaxOpenConns = types.IntPtr(csconfig.DEFAULT_MAX_OPEN_CONNS)
}
db.SetMaxOpenConns(*config.MaxOpenConns)
drv := entsql.OpenDB(dbdialect, db)
return drv, nil
}
func NewClient(config *csconfig.DatabaseCfg) (*Client, error) {
var client *ent.Client
var err error
if config == nil {
return &Client{}, fmt.Errorf("DB config is empty")
}
/*The logger that will be used by db operations*/
clog := log.New()
if err := types.ConfigureLogger(clog); err != nil {
return nil, errors.Wrap(err, "while configuring db logger")
}
if config.LogLevel != nil {
clog.SetLevel(*config.LogLevel)
}
entLogger := clog.WithField("context", "ent")
entOpt := ent.Log(entLogger.Debug)
switch config.Type {
case "sqlite":
/*if it's the first startup, we want to touch and chmod file*/
if _, err := os.Stat(config.DbPath); os.IsNotExist(err) {
f, err := os.OpenFile(config.DbPath, os.O_CREATE|os.O_RDWR, 0600)
if err != nil {
return &Client{}, errors.Wrapf(err, "failed to create SQLite database file %q", config.DbPath)
}
if err := f.Close(); err != nil {
return &Client{}, errors.Wrapf(err, "failed to create SQLite database file %q", config.DbPath)
}
}
//Always try to set permissions to simplify a bit the code for windows (as the permissions set by OpenFile will be garbage)
if err := setFilePerm(config.DbPath, 0640); err != nil {
return &Client{}, fmt.Errorf("unable to set perms on %s: %v", config.DbPath, err)
}
var sqliteConnectionStringParameters string
if config.UseWal != nil && *config.UseWal {
sqliteConnectionStringParameters = "_busy_timeout=100000&_fk=1&_journal_mode=WAL"
} else {
sqliteConnectionStringParameters = "_busy_timeout=100000&_fk=1"
}
drv, err := getEntDriver("sqlite3", dialect.SQLite, fmt.Sprintf("file:%s?%s", config.DbPath, sqliteConnectionStringParameters), config)
if err != nil {
return &Client{}, errors.Wrapf(err, "failed opening connection to sqlite: %v", config.DbPath)
}
client = ent.NewClient(ent.Driver(drv), entOpt)
case "mysql":
drv, err := getEntDriver("mysql", dialect.MySQL, fmt.Sprintf("%s:%s@tcp(%s:%d)/%s?parseTime=True", config.User, config.Password, config.Host, config.Port, config.DbName), config)
if err != nil {
return &Client{}, fmt.Errorf("failed opening connection to mysql: %v", err)
}
client = ent.NewClient(ent.Driver(drv), entOpt)
case "postgres", "postgresql":
drv, err := getEntDriver("postgres", dialect.Postgres, fmt.Sprintf("host=%s port=%d user=%s dbname=%s password=%s sslmode=%s", config.Host, config.Port, config.User, config.DbName, config.Password, config.Sslmode), config)
if err != nil {
return &Client{}, fmt.Errorf("failed opening connection to postgresql: %v", err)
}
client = ent.NewClient(ent.Driver(drv), entOpt)
case "pgx":
drv, err := getEntDriver("pgx", dialect.Postgres, fmt.Sprintf("postgresql://%s:%s@%s:%d/%s?sslmode=%s", config.User, config.Password, config.Host, config.Port, config.DbName, config.Sslmode), config)
if err != nil {
return &Client{}, fmt.Errorf("failed opening connection to pgx: %v", err)
}
client = ent.NewClient(ent.Driver(drv), entOpt)
default:
return &Client{}, fmt.Errorf("unknown database type '%s'", config.Type)
}
if config.LogLevel != nil && *config.LogLevel >= log.DebugLevel {
clog.Debugf("Enabling request debug")
client = client.Debug()
}
if err = client.Schema.Create(context.Background()); err != nil {
return nil, fmt.Errorf("failed creating schema resources: %v", err)
}
return &Client{Ent: client, CTX: context.Background(), Log: clog, CanFlush: true, Type: config.Type, WalMode: config.UseWal}, nil
}
func (c *Client) StartFlushScheduler(config *csconfig.FlushDBCfg) (*gocron.Scheduler, error) {
maxItems := 0
maxAge := ""
if config.MaxItems != nil && *config.MaxItems <= 0 {
return nil, fmt.Errorf("max_items can't be zero or negative number")
}
if config.MaxItems != nil {
maxItems = *config.MaxItems
}
if config.MaxAge != nil && *config.MaxAge != "" {
maxAge = *config.MaxAge
}
// Init & Start cronjob every minute for alerts
scheduler := gocron.NewScheduler(time.UTC)
job, err := scheduler.Every(1).Minute().Do(c.FlushAlerts, maxAge, maxItems)
if err != nil {
return nil, errors.Wrap(err, "while starting FlushAlerts scheduler")
}
job.SingletonMode()
// Init & Start cronjob every hour for bouncers/agents
if config.AgentsGC != nil {
if config.AgentsGC.Cert != nil {
duration, err := types.ParseDuration(*config.AgentsGC.Cert)
if err != nil {
return nil, errors.Wrap(err, "while parsing agents cert auto-delete duration")
}
config.AgentsGC.CertDuration = &duration
}
if config.AgentsGC.LoginPassword != nil {
duration, err := types.ParseDuration(*config.AgentsGC.LoginPassword)
if err != nil {
return nil, errors.Wrap(err, "while parsing agents login/password auto-delete duration")
}
config.AgentsGC.LoginPasswordDuration = &duration
}
if config.AgentsGC.Api != nil {
log.Warning("agents auto-delete for API auth is not supported (use cert or login_password)")
}
}
if config.BouncersGC != nil {
if config.BouncersGC.Cert != nil {
duration, err := types.ParseDuration(*config.BouncersGC.Cert)
if err != nil {
return nil, errors.Wrap(err, "while parsing bouncers cert auto-delete duration")
}
config.BouncersGC.CertDuration = &duration
}
if config.BouncersGC.Api != nil {
duration, err := types.ParseDuration(*config.BouncersGC.Api)
if err != nil {
return nil, errors.Wrap(err, "while parsing bouncers api auto-delete duration")
}
config.BouncersGC.ApiDuration = &duration
}
if config.BouncersGC.LoginPassword != nil {
log.Warning("bouncers auto-delete for login/password auth is not supported (use cert or api)")
}
}
baJob, err := scheduler.Every(1).Minute().Do(c.FlushAgentsAndBouncers, config.AgentsGC, config.BouncersGC)
if err != nil {
return nil, errors.Wrap(err, "while starting FlushAgentsAndBouncers scheduler")
}
baJob.SingletonMode()
scheduler.StartAsync()
return scheduler, nil
}
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