# mod_auth

### MODULE

mod_auth

### MODULE SUMMARY

User authentication using text files, dets or mnesia database.

### DESCRIPTION

This module provides for basic user authentication using textual files, dets databases as well as mnesia databases.

### EXPORTS

`add_user(UserName, Options) -> true| {error, Reason}`
`add_user(UserName, Password, UserData, Port, Dir) -> true | {error, Reason}`
`add_user(UserName, Password, UserData, Address, Port, Dir) -> true | {error, Reason}`

Types:

`UserName = string()`
`Options = [Option]`
`Option = {password,Password} | {userData,UserData} | {port,Port} | {addr,Address} | {dir,Directory} | {authPassword,AuthPassword}`
`Password = string()`
`UserData = term()`
`Port = integer()`
`Address = {A,B,C,D} | string() | undefined`
`Dir = string()`
`AuthPassword =string()`
`Reason = term()`

`add_user/2, add_user/5` and `add_user/6` adds a user to the user database. If the operation is succesful, this function returns `true`. If an error occurs, `{error,Reason}` is returned. When `add_user/2` is called the Password, UserData Port and Dir options is mandatory.

`delete_user(UserName,Options) -> true | {error, Reason}`
`delete_user(UserName, Port, Dir) -> true | {error, Reason}`
`delete_user(UserName, Address, Port, Dir) -> true | {error, Reason}`

Types:

`UserName = string()`
`Options = [Option]`
`Option = {port,Port} | {addr,Address} | {dir,Directory} | {authPassword,AuthPassword}`
`Port = integer()`
`Address = {A,B,C,D} | string() | undefined`
`Dir = string()`
`AuthPassword = string()`
`Reason = term()`

`delete_user/2, delete_user/3` and `delete_user/4` deletes a user from the user database. If the operation is succesful, this function returns `true`. If an error occurs, `{error,Reason}` is returned. When `delete_user/2` is called the Port and Dir options are mandatory.

`get_user(UserName,Options) -> {ok, #httpd_user} |{error, Reason}`
`get_user(UserName, Port, Dir) -> {ok, #httpd_user} | {error, Reason}`
`get_user(UserName, Address, Port, Dir) -> {ok, #httpd_user} | {error, Reason}`

Types:

`UserName = string()`
`Options = [Option]`
`Option = {port,Port} | {addr,Address} | {dir,Directory} | {authPassword,AuthPassword}`
`Port = integer()`
`Address = {A,B,C,D} | string() | undefined`
`Dir = string()`
`AuthPassword = string()`
`Reason = term()`

`get_user/2, get_user/3` and `get_user/4` returns a `httpd_user` record containing the userdata for a specific user. If the user cannot be found, `{error, Reason}` is returned. When `get_user/2` is called the Port and Dir options are mandatory.

`list_users(Options) -> {ok, Users} | {error, Reason} <name>list_users(Port, Dir) -> {ok, Users} | {error, Reason}`
`list_users(Address, Port, Dir) -> {ok, Users} | {error, Reason}`

Types:

`Options = [Option]`
`Option = {port,Port} | {addr,Address} | {dir,Directory} | {authPassword,AuthPassword}`
`Port = integer()`
`Address = {A,B,C,D} | string() | undefined`
`Dir = string()`
`Users = list()`
`AuthPassword = string()`
`Reason = atom()`

`list_users/1, list_users/2` and `list_users/3` returns a list of users in the user database for a specific `Port/Dir`. When `list_users/1` is called the Port and Dir options are mandatory.

`add_group_member(GroupName, UserName, Options) -> true | {error, Reason}`
`add_group_member(GroupName, UserName, Port, Dir) -> true | {error, Reason}`
`add_group_member(GroupName, UserName, Address, Port, Dir) -> true | {error, Reason}`

Types:

`GroupName = string()`
`UserName = string()`
`Options = [Option]`
`Option = {port,Port} | {addr,Address} | {dir,Directory} | {authPassword,AuthPassword}`
`Port = integer()`
`Address = {A,B,C,D} | string() | undefined`
`Dir = string()`
`AuthPassword = string()`
`Reason = term()`

`add_group_member/3, add_group_member/4` and `add_group_member/5` adds a user to a group. If the group does not exist, it is created and the user is added to the group. Upon successful operation, this function returns `true`. When `add_group_members/3` is called the Port and Dir options are mandatory.

`delete_group_member(GroupName, UserName, Options) -> true | {error, Reason}`
`delete_group_member(GroupName, UserName, Port, Dir) -> true | {error, Reason}`
`delete_group_member(GroupName, UserName, Address, Port, Dir) -> true | {error, Reason}`

Types:

`GroupName = string()`
`UserName = string()`
`Options = [Option]`
`Option = {port,Port} | {addr,Address} | {dir,Directory} | {authPassword,AuthPassword}`
`Port = integer()`
`Address = {A,B,C,D} | string() | undefined`
`Dir = string()`
`AuthPassword = string()`
`Reason = term()`

`delete_group_member/3, delete_group_member/4` and `delete_group_member/5` deletes a user from a group. If the group or the user does not exist, this function returns an error, otherwise it returns `true`. When `delete_group_member/3` is called the Port and Dir options are mandatory.

`list_group_members(GroupName, Options) -> {ok, Users} | {error, Reason}`
`list_group_members(GroupName, Port, Dir) -> {ok, Users} | {error, Reason}`
`list_group_members(GroupName, Address, Port, Dir) -> {ok, Users} | {error, Reason}`

Types:

`GroupName = string()`
`Options = [Option]`
`Option = {port,Port} | {addr,Address} | {dir,Directory} | {authPassword,AuthPassword}`
`Port = integer()`
`Address = {A,B,C,D} | string() | undefined`
`Dir = string()`
`Users = list()`
`AuthPassword = string()`
`Reason = term()`

`list_group_members/2, list_group_members/3` and `list_group_members/4` lists the members of a specified group. If the group does not exist or there is an error, `{error, Reason}` is returned. When `list_group_members/2` is called the Port and Dir options are mandatory.

`list_groups(Options) -> {ok, Groups} | {error, Reason}`
`list_groups(Port, Dir) -> {ok, Groups} | {error, Reason}`
`list_groups(Address, Port, Dir) -> {ok, Groups} | {error, Reason}`

Types:

`Options = [Option]`
`Option = {port,Port} | {addr,Address} | {dir,Directory} | {authPassword,AuthPassword}`
`Port = integer()`
`Address = {A,B,C,D} | string() | undefined`
`Dir = string()`
`Groups = list()`
`AuthPassword = string()`
`Reason = term()`

`list_groups/1, list_groups/2` and `list_groups/3` lists all the groups available. If there is an error, `{error, Reason}` is returned. When `list_groups/1` is called the Port and Dir options are mandatory.

`delete_group(GroupName, Options) -> true | {error,Reason} <name>delete_group(GroupName, Port, Dir) -> true | {error, Reason}`
`delete_group(GroupName, Address, Port, Dir) -> true | {error, Reason}`

Types:

`Options = [Option]`
`Option = {port,Port} | {addr,Address} | {dir,Directory} | {authPassword,AuthPassword}`
`Port = integer()`
`Address = {A,B,C,D} | string() | undefined`
`Dir = string()`
`GroupName = string()`
`AuthPassword = string()`
`Reason = term()`

`delete_group/2, delete_group/3` and `delete_group/4` deletes the group specified and returns `true`. If there is an error, `{error, Reason}` is returned. When `delete_group/2` is called the Port and Dir options are mandatory.

`update_password(Port, Dir, OldPassword, NewPassword, NewPassword) -> ok | {error, Reason}`
`update_password(Address,Port, Dir, OldPassword, NewPassword, NewPassword) -> ok | {error, Reason}`

Types:

`Port = integer()`
`Address = {A,B,C,D} | string() | undefined`
`Dir = string()`
`GroupName = string()`
`OldPassword = string()`
`NewPassword = string()`
`Reason = term()`

`update_password/5` and `update_password/6` Updates the AuthAccessPassword for the specified directory. If NewPassword is equal to "NoPassword" no password is requires to change authorisation data. If NewPassword is equal to "DummyPassword" no changes can be done without changing the password first.

### SEE ALSO

httpd(3), mod_alias(3),

### AUTHORS

Mattias Nilsson - support@erlang.ericsson.se
Original implementation: Joakim Grebenö - support@erlang.ericsson.se

inets 4.7.6
Copyright © 1991-2006 Ericsson AB