9dc8dd862f
Add a project Dockerfile to allow deploying the application in a docker container. Add a `run.sh` script to start the application in the container. Add Makefile commands to build the docker image based on the Dockerfile. Fix possible nil reference error in the `db` package.
80 lines
1.7 KiB
Go
80 lines
1.7 KiB
Go
package db
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import (
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"database/sql"
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"log"
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"os"
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)
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const queryBadIpsPerJail = "SELECT j.name, (SELECT COUNT(1) FROM bips b WHERE j.name = b.jail) FROM jails j"
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const queryBannedIpsPerJail = "SELECT j.name, (SELECT COUNT(1) FROM bans b WHERE j.name = b.jail) FROM jails j"
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type Fail2BanDB struct {
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DatabasePath string
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sqliteDB *sql.DB
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}
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func MustConnectToDb(databasePath string) *Fail2BanDB {
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if _, err := os.Stat(databasePath); os.IsNotExist(err) {
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log.Fatalf("database path does not exist: %v", err)
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}
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db, err := sql.Open("sqlite3", databasePath)
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if err != nil {
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log.Fatal(err)
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}
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return &Fail2BanDB{
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DatabasePath: databasePath,
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sqliteDB: db,
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}
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}
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func (db *Fail2BanDB) CountBannedIpsPerJail() (map[string]int, error) {
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return db.RunJailNameToCountQuery(queryBannedIpsPerJail)
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}
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func (db *Fail2BanDB) CountBadIpsPerJail() (map[string]int, error) {
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return db.RunJailNameToCountQuery(queryBadIpsPerJail)
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}
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func (db *Fail2BanDB) RunJailNameToCountQuery(query string) (map[string]int, error) {
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stmt, err := db.sqliteDB.Prepare(query)
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defer db.mustCloseStatement(stmt)
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if err != nil {
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return nil, err
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}
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jailNameToCountMap := map[string]int{}
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rows, err := stmt.Query()
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if err != nil {
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return nil, err
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}
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if rows == nil {
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return jailNameToCountMap, nil
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}
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for rows.Next() {
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if rows.Err() != nil {
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return nil, err
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}
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jailName := ""
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count := 0
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err = rows.Scan(&jailName, &count)
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if err != nil {
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return nil, err
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}
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jailNameToCountMap[jailName] = count
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}
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return jailNameToCountMap, nil
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}
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func (db *Fail2BanDB) mustCloseStatement(stmt *sql.Stmt) {
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if stmt != nil {
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err := stmt.Close()
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if err != nil {
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log.Fatal(err)
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}
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}
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}
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