radius
a Go (golang) RADIUS client and server implementation
Installation
go get -u layeh.com/radius
Client example
package main
import (
"context"
"log"
"layeh.com/radius"
"layeh.com/radius/rfc2865"
)
func main() {
packet := radius.New(radius.CodeAccessRequest, []byte(`secret`))
rfc2865.UserName_SetString(packet, "tim")
rfc2865.UserPassword_SetString(packet, "12345")
response, err := radius.Exchange(context.Background(), packet, "localhost:1812")
if err != nil {
log.Fatal(err)
}
log.Println("Code:", response.Code)
}Server example
package main
import (
"log"
"layeh.com/radius"
"layeh.com/radius/rfc2865"
)
func main() {
handler := func(w radius.ResponseWriter, r *radius.Request) {
username := rfc2865.UserName_GetString(r.Packet)
password := rfc2865.UserPassword_GetString(r.Packet)
var code radius.Code
if username == "tim" && password == "12345" {
code = radius.CodeAccessAccept
} else {
code = radius.CodeAccessReject
}
log.Printf("Writing %v to %v", code, r.RemoteAddr)
w.Write(r.Response(code))
}
server := radius.PacketServer{
Handler: radius.HandlerFunc(handler),
SecretSource: radius.StaticSecretSource([]byte(`secret`)),
}
log.Printf("Starting server on :1812")
if err := server.ListenAndServe(); err != nil {
log.Fatal(err)
}
}RADIUS Dictionaries
Included in this package is the command line program radius-dict-gen. It can be installed with:
go get -u layeh.com/radius/cmd/radius-dict-gen
Given a FreeRADIUS dictionary, the program will generate helper functions and types for reading and manipulating RADIUS attributes in a packet. It is recommended that generated code be used for any RADIUS dictionary you would like to consume.
Included in this repository are sub-packages of generated helpers for commonly used RADIUS attributes, including rfc2865 and rfc2866.
License
MPL 2.0
Author
Tim Cooper ([email protected])