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gen_udp(3erl) [linux man page]

gen_udp(3erl)						     Erlang Module Definition						     gen_udp(3erl)

NAME
gen_udp - Interface to UDP sockets DESCRIPTION
The gen_udp module provides functions for communicating with sockets using the UDP protocol. DATA TYPES
ip_address() see inet(3erl) posix() see inet(3erl) socket() as returned by open/1,2 EXPORTS
open(Port) -> {ok, Socket} | {error, Reason} open(Port, Options) -> {ok, Socket} | {error, Reason} Types Port = 0..65535 Options = [Opt] Opt -- see below Socket = socket() Reason = posix() Associates a UDP port number ( Port ) with the calling process. The available options are: list : Received Packet is delivered as a list. binary : Received Packet is delivered as a binary. {ip, ip_address()} : If the host has several network interfaces, this option specifies which one to use. {fd, int()} : If a socket has somehow been opened without using gen_udp , use this option to pass the file descriptor for it. inet6 : Set up the socket for IPv6. inet : Set up the socket for IPv4. Opt : See inet:setopts/2 . The returned socket Socket is used to send packets from this port with send/4 . When UDP packets arrive at the opened port, they are delivered as messages: {udp, Socket, IP, InPortNo, Packet} Note that arriving UDP packets that are longer than the receive buffer option specifies, might be truncated without warning. IP and InPortNo define the address from which Packet came. Packet is a list of bytes if the option list was specified. Packet is a binary if the option binary was specified. Default value for the receive buffer option is {recbuf, 8192} . If Port == 0 , the underlying OS assigns a free UDP port, use inet:port/1 to retrieve it. send(Socket, Address, Port, Packet) -> ok | {error, Reason} Types Socket = socket() Address = string() | atom() | ip_address() Port = 0..65535 Packet = [char()] | binary() Reason = not_owner | posix() Sends a packet to the specified address and port. The Address argument can be either a hostname, or an IP address. recv(Socket, Length) -> {ok, {Address, Port, Packet}} | {error, Reason} recv(Socket, Length, Timeout) -> {ok, {Address, Port, Packet}} | {error, Reason} Types Socket = socket() Length = int() Address = ip_address() Port = 0..65535 Packet = [char()] | binary() Timeout = int() | infinity Reason = not_owner | posix() This function receives a packet from a socket in passive mode. The optional Timeout parameter specifies a timeout in milliseconds. The default value is infinity . controlling_process(Socket, Pid) -> ok Types Socket = socket() Pid = pid() Assigns a new controlling process Pid to Socket . The controlling process is the process which receives messages from the socket. close(Socket) -> ok | {error, Reason} Types Socket = socket() Reason = not_owner | posix() Closes a UDP socket. Ericsson AB kernel 2.14.3 gen_udp(3erl)

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mod_auth(3erl)						     Erlang Module Definition						    mod_auth(3erl)

NAME
mod_auth - 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,AuthPass- word} 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 successful, 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 succesfull, 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} 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, Rea- son} 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(3erl) , mod_alias(3erl) , Ericsson AB inets 5.5.2 mod_auth(3erl)

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