mirror of
https://github.com/crowdsecurity/crowdsec.git
synced 2025-05-11 20:36:12 +02:00
114 lines
2.8 KiB
Go
114 lines
2.8 KiB
Go
package v1
|
|
|
|
import (
|
|
"crypto/rand"
|
|
"crypto/sha512"
|
|
"encoding/hex"
|
|
"fmt"
|
|
"net/http"
|
|
"strings"
|
|
|
|
"github.com/crowdsecurity/crowdsec/pkg/database"
|
|
"github.com/gin-gonic/gin"
|
|
log "github.com/sirupsen/logrus"
|
|
)
|
|
|
|
var (
|
|
APIKeyHeader = "X-Api-Key"
|
|
)
|
|
|
|
type APIKey struct {
|
|
HeaderName string
|
|
DbClient *database.Client
|
|
}
|
|
|
|
func GenerateAPIKey(n int) (string, error) {
|
|
bytes := make([]byte, n)
|
|
if _, err := rand.Read(bytes); err != nil {
|
|
return "", err
|
|
}
|
|
return hex.EncodeToString(bytes), nil
|
|
}
|
|
|
|
func NewAPIKey(dbClient *database.Client) *APIKey {
|
|
return &APIKey{
|
|
HeaderName: APIKeyHeader,
|
|
DbClient: dbClient,
|
|
}
|
|
}
|
|
|
|
func HashSHA512(str string) string {
|
|
hashedKey := sha512.New()
|
|
hashedKey.Write([]byte(str))
|
|
|
|
hashStr := fmt.Sprintf("%x", hashedKey.Sum(nil))
|
|
|
|
return hashStr
|
|
}
|
|
|
|
func (a *APIKey) MiddlewareFunc() gin.HandlerFunc {
|
|
return func(c *gin.Context) {
|
|
val, ok := c.Request.Header[APIKeyHeader]
|
|
if !ok {
|
|
c.JSON(http.StatusForbidden, gin.H{"message": "access forbidden"})
|
|
c.Abort()
|
|
return
|
|
}
|
|
|
|
hashStr := HashSHA512(val[0])
|
|
bouncer, err := a.DbClient.SelectBouncer(hashStr)
|
|
if err != nil {
|
|
log.Errorf("auth api key error: %s", err)
|
|
c.JSON(http.StatusForbidden, gin.H{"message": "access forbidden"})
|
|
c.Abort()
|
|
return
|
|
}
|
|
|
|
if bouncer == nil {
|
|
c.JSON(http.StatusForbidden, gin.H{"message": "access forbidden"})
|
|
c.Abort()
|
|
return
|
|
}
|
|
|
|
c.Set("BOUNCER_NAME", bouncer.Name)
|
|
|
|
if bouncer.IPAddress == "" {
|
|
err = a.DbClient.UpdateBouncerIP(c.ClientIP(), bouncer.ID)
|
|
if err != nil {
|
|
log.Errorf("Failed to update ip address for '%s': %s\n", bouncer.Name, err)
|
|
c.JSON(http.StatusForbidden, gin.H{"message": "access forbidden"})
|
|
c.Abort()
|
|
return
|
|
}
|
|
}
|
|
|
|
if bouncer.IPAddress != c.ClientIP() && bouncer.IPAddress != "" {
|
|
log.Warningf("new IP address detected for bouncer '%s': %s (old: %s)", bouncer.Name, c.ClientIP(), bouncer.IPAddress)
|
|
err = a.DbClient.UpdateBouncerIP(c.ClientIP(), bouncer.ID)
|
|
if err != nil {
|
|
log.Errorf("Failed to update ip address for '%s': %s\n", bouncer.Name, err)
|
|
c.JSON(http.StatusForbidden, gin.H{"message": "access forbidden"})
|
|
c.Abort()
|
|
return
|
|
}
|
|
}
|
|
|
|
useragent := strings.Split(c.Request.UserAgent(), "/")
|
|
|
|
if len(useragent) != 2 {
|
|
log.Warningf("bad user agent '%s' from '%s'", c.Request.UserAgent(), c.ClientIP())
|
|
useragent = []string{c.Request.UserAgent(), "N/A"}
|
|
}
|
|
|
|
if bouncer.Version != useragent[1] || bouncer.Type != useragent[0] {
|
|
if err := a.DbClient.UpdateBouncerTypeAndVersion(useragent[0], useragent[1], bouncer.ID); err != nil {
|
|
log.Errorf("failed to update bouncer version and type from '%s' (%s): %s", c.Request.UserAgent(), c.ClientIP(), err)
|
|
c.JSON(http.StatusForbidden, gin.H{"message": "bad user agent"})
|
|
c.Abort()
|
|
return
|
|
}
|
|
}
|
|
|
|
c.Next()
|
|
}
|
|
}
|