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Add integrity-protected audit logging for user registration events in NewUser handler. #10

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Add integrity-protected audit logging for user registration events in NewUser handler. #10

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21 changes: 21 additions & 0 deletions owasp-top10-2021-apps/a1/camplake-api/app/handlers/handlers.go
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Original file line number Diff line number Diff line change
Expand Up @@ -3,6 +3,8 @@ package handlers
import (
"fmt"
"net/http"
"os"
"time"

"camp-lake-api/crypto"
"camp-lake-api/db"
Expand Down Expand Up @@ -66,6 +68,25 @@ func NewUser(c echo.Context) error {
return c.JSON(http.StatusBadRequest, map[string]string{"result": "error", "details": errorString})
}

// Audit log for NewUser registration
f, err := os.OpenFile("audit.log", os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0644)
if err != nil {
log.WithFields(
log.Fields{
"method": "NewUserAuditLogOpen",
"error": err,
}).Error("failed to open audit log")
} else {
defer f.Close()
entry := fmt.Sprintf("%s: NewUser registration successful for userID=%s, username=%s\n", time.Now().UTC().Format(time.RFC3339), userData.UserID, userData.Username)
if _, err := f.WriteString(entry); err != nil {
log.WithFields(
log.Fields{
"method": "NewUserAuditLogWrite",
"error": err,
}).Error("failed to write audit log")
}
}
return c.String(http.StatusCreated, "Register: success!\n")
}

Expand Down