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Module Rpc_auth_sys


module Rpc_auth_sys: sig .. end
Authentication module AUTH_SYS


This module implements system authentication (AUTH_SYS, also known as AUTH_UNIX).

*********************************************************************** WARNING! WARNING! WARNING! WARNING! WARNING! WARNING! WARNING! WARNING!

This authentication method is insecure because it does not use any verifier. I strongly dissuade everybody from using this authentication method for newly written RPC systems. I include it here only for compatibility with older systems.

WARNING! WARNING! WARNING! WARNING! WARNING! WARNING! WARNING! WARNING! ***********************************************************************

type identity = [ `Effective_user | `Real_user | `This_user of int * int * int array * string ] 
Specifies the user:
  • `Effective_user: Take the effective user of the process
  • `Real_user: Take the real user of the process
  • `This_user(uid,gid,sup_groups,hostname): Pretend to be this user

val client_auth_method : ?identity:identity -> unit -> Rpc_client.auth_method
Pass the result of this function to Rpc_client.set_auth_methods to configure client authentication.

identity: As whom the clients authenticates.

type user_name_format = [ `Custom of int32 -> int32 -> int32 array -> string -> string | `Full | `UID ] 
How Rpc_server.get_user returns the user as string:
  • `Full: The format includes all transmitted details: "<uid>.<gid>.<gid1>.<gid2>...@<hostname>". All user and group IDs are numeric. The first two numbers, <uid> and <gid> are always present. The other numbers are the supplementary group IDs and can be omitted. The <hostname> is the name passed in the credentials.
  • `UID: The string is the numeric user ID
  • `Custom f: The string is returned by the function f. The arguments are uid, gid, the array of the supplementary group IDs and the hostname.

val server_auth_method : ?lookup_hostname:bool ->
?require_privileged_port:bool ->
?user_name_as:user_name_format -> unit -> Rpc_server.auth_method
Pass the result of this function to Rpc_server.set_auth_methods to configure authentication.

lookup_hostname: if true, the hostname contained in the credentials is checked (by gethostbyname)

require_privileged_port: if true, the client must use a privileged port. Note that Unix domain sockets are rejected in this mode.

User name strings as formatted as specified by user_name_as. This defaults to `Full.

val parse_user_name : string -> int * int * int array * string
Parses a user name as returned by Rpc_server.get_user in conjunction with the AUTH_SYS authentication and `Full formatting. Returns (uid,gid,sup_groups,hostname).1
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