7bd2091e |
1 | /* -*-c-*- |
2 | * |
3 | * $Id: ident.h,v 1.1 1999/10/04 21:41:58 mdw Exp $ |
4 | * |
5 | * Nonblocking RFC931 client |
6 | * |
7 | * (c) 1999 Mark Wooding |
8 | */ |
9 | |
10 | /*----- Licensing notice --------------------------------------------------* |
11 | * |
12 | * This file is part of the mLib utilities library. |
13 | * |
14 | * mLib is free software; you can redistribute it and/or modify |
15 | * it under the terms of the GNU Library General Public License as |
16 | * published by the Free Software Foundation; either version 2 of the |
17 | * License, or (at your option) any later version. |
18 | * |
19 | * mLib is distributed in the hope that it will be useful, |
20 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
21 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
22 | * GNU Library General Public License for more details. |
23 | * |
24 | * You should have received a copy of the GNU Library General Public |
25 | * License along with mLib; if not, write to the Free |
26 | * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, |
27 | * MA 02111-1307, USA. |
28 | */ |
29 | |
30 | /*----- Revision history --------------------------------------------------* |
31 | * |
32 | * $Log: ident.h,v $ |
33 | * Revision 1.1 1999/10/04 21:41:58 mdw |
34 | * Added ident client from `fw'. |
35 | * |
36 | */ |
37 | |
38 | #ifndef IDENT_H |
39 | #define IDENT_H |
40 | |
41 | #ifdef __cplusplus |
42 | extern "C" { |
43 | #endif |
44 | |
45 | /*----- Header files ------------------------------------------------------*/ |
46 | |
47 | #include <sys/types.h> |
48 | #include <sys/socket.h> |
49 | #include <netinet/in.h> |
50 | #include <arpa/inet.h> |
51 | |
52 | #ifndef CONN_H |
53 | # include "conn.h" |
54 | #endif |
55 | |
56 | #ifndef SEL_H |
57 | # include "sel.h" |
58 | #endif |
59 | |
60 | #ifndef SELBUF_H |
61 | # include "selbuf.h" |
62 | #endif |
63 | |
64 | /*----- Data structures ---------------------------------------------------*/ |
65 | |
66 | /* --- Parsed response from ident server --- */ |
67 | |
68 | typedef struct ident_reply { |
69 | unsigned short sport, dport; /* Source and destination ports */ |
70 | unsigned type; /* Type of reply from server */ |
71 | union { |
72 | struct { |
73 | char *os; /* Operating system name */ |
74 | char *user; /* User name */ |
75 | } userid; |
76 | char *error; /* Error message from server */ |
77 | } u; |
78 | } ident_reply; |
79 | |
80 | /* --- Response type codes --- */ |
81 | |
82 | enum { |
83 | IDENT_USERID, |
84 | IDENT_ERROR, |
85 | IDENT_BAD |
86 | }; |
87 | |
88 | /* --- Request structure --- */ |
89 | |
90 | typedef struct ident_request { |
91 | struct sockaddr_in local, remote; |
92 | unsigned state; |
93 | void (*func)(ident_reply */*i*/, void */*p*/); |
94 | void *p; |
95 | sel_state *s; |
96 | conn c; |
97 | selbuf b; |
98 | } ident_request; |
99 | |
100 | enum { |
101 | IDENT_CONN, |
102 | IDENT_READ, |
103 | IDENT_DONE |
104 | }; |
105 | |
106 | /*----- Functions provided ------------------------------------------------*/ |
107 | |
108 | /* --- @ident_abort@ --- * |
109 | * |
110 | * Arguments: @ident_request *rq@ = pointer to request block |
111 | * |
112 | * Returns: --- |
113 | * |
114 | * Use: Cancels an ident request in progress. |
115 | */ |
116 | |
117 | extern void ident_abort(ident_request */*rq*/); |
118 | |
119 | /* --- @ident@ --- * |
120 | * |
121 | * Arguments: @ident_request *rq@ = pointer to request block |
122 | * @sel_state *s@ = I/O multiplexor |
123 | * @const struct sockaddr_in *local, *remote@ = addresses |
124 | * @void (*func)(ident_reply *i, void *p)@ = handler function |
125 | * @void *p@ = argument for handler |
126 | * |
127 | * Returns: --- |
128 | * |
129 | * Use: Initializes an ident request. |
130 | */ |
131 | |
132 | extern void ident(ident_request */*rq*/, sel_state */*s*/, |
133 | const struct sockaddr_in */*local*/, |
134 | const struct sockaddr_in */*remote*/, |
135 | void (*/*func*/)(ident_reply */*i*/, void */*p*/), |
136 | void */*p*/); |
137 | |
138 | /* --- @ident_socket@ --- * |
139 | * |
140 | * Arguments: @ident_request *rq@ = pointer to request block |
141 | * @sel_state *s@ = I/O multiplexor |
142 | * @int sk@ = connected socket file descriptor |
143 | * @void (*func)(ident_reply *i, void *p)@ = handler function |
144 | * @void *p@ = argument for handler |
145 | * |
146 | * Returns: --- |
147 | * |
148 | * Use: An alternative interface to @ident@. Initializes an ident |
149 | * request from a connected socket, rather than from an explicit |
150 | * address. This will call @getsockname@ and @getpeername@ to |
151 | * find out what the socket is actually connected to, which adds |
152 | * convenience but wastes time. |
153 | */ |
154 | |
155 | extern void ident_socket(ident_request */*rq*/, sel_state */*s*/, int /*sk*/, |
156 | void (*/*func*/)(ident_reply */*i*/, void */*p*/), |
157 | void */*p*/); |
158 | |
159 | /*----- That's all, folks -------------------------------------------------*/ |
160 | |
161 | #ifdef __cplusplus |
162 | } |
163 | #endif |
164 | |
165 | #endif |