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1 | /* -*-c-*- |
2 | * |
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3 | * $Id: ident.h,v 1.2 1999/12/10 23:42:04 mdw Exp $ |
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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 $ |
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33 | * Revision 1.2 1999/12/10 23:42:04 mdw |
34 | * Change header file guard names. |
35 | * |
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36 | * Revision 1.1 1999/10/04 21:41:58 mdw |
37 | * Added ident client from `fw'. |
38 | * |
39 | */ |
40 | |
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41 | #ifndef MLIB_IDENT_H |
42 | #define MLIB_IDENT_H |
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43 | |
44 | #ifdef __cplusplus |
45 | extern "C" { |
46 | #endif |
47 | |
48 | /*----- Header files ------------------------------------------------------*/ |
49 | |
50 | #include <sys/types.h> |
51 | #include <sys/socket.h> |
52 | #include <netinet/in.h> |
53 | #include <arpa/inet.h> |
54 | |
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55 | #ifndef MLIB_CONN_H |
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56 | # include "conn.h" |
57 | #endif |
58 | |
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59 | #ifndef MLIB_SEL_H |
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60 | # include "sel.h" |
61 | #endif |
62 | |
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63 | #ifndef MLIB_SELBUF_H |
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64 | # include "selbuf.h" |
65 | #endif |
66 | |
67 | /*----- Data structures ---------------------------------------------------*/ |
68 | |
69 | /* --- Parsed response from ident server --- */ |
70 | |
71 | typedef struct ident_reply { |
72 | unsigned short sport, dport; /* Source and destination ports */ |
73 | unsigned type; /* Type of reply from server */ |
74 | union { |
75 | struct { |
76 | char *os; /* Operating system name */ |
77 | char *user; /* User name */ |
78 | } userid; |
79 | char *error; /* Error message from server */ |
80 | } u; |
81 | } ident_reply; |
82 | |
83 | /* --- Response type codes --- */ |
84 | |
85 | enum { |
86 | IDENT_USERID, |
87 | IDENT_ERROR, |
88 | IDENT_BAD |
89 | }; |
90 | |
91 | /* --- Request structure --- */ |
92 | |
93 | typedef struct ident_request { |
94 | struct sockaddr_in local, remote; |
95 | unsigned state; |
96 | void (*func)(ident_reply */*i*/, void */*p*/); |
97 | void *p; |
98 | sel_state *s; |
99 | conn c; |
100 | selbuf b; |
101 | } ident_request; |
102 | |
103 | enum { |
104 | IDENT_CONN, |
105 | IDENT_READ, |
106 | IDENT_DONE |
107 | }; |
108 | |
109 | /*----- Functions provided ------------------------------------------------*/ |
110 | |
111 | /* --- @ident_abort@ --- * |
112 | * |
113 | * Arguments: @ident_request *rq@ = pointer to request block |
114 | * |
115 | * Returns: --- |
116 | * |
117 | * Use: Cancels an ident request in progress. |
118 | */ |
119 | |
120 | extern void ident_abort(ident_request */*rq*/); |
121 | |
122 | /* --- @ident@ --- * |
123 | * |
124 | * Arguments: @ident_request *rq@ = pointer to request block |
125 | * @sel_state *s@ = I/O multiplexor |
126 | * @const struct sockaddr_in *local, *remote@ = addresses |
127 | * @void (*func)(ident_reply *i, void *p)@ = handler function |
128 | * @void *p@ = argument for handler |
129 | * |
130 | * Returns: --- |
131 | * |
132 | * Use: Initializes an ident request. |
133 | */ |
134 | |
135 | extern void ident(ident_request */*rq*/, sel_state */*s*/, |
136 | const struct sockaddr_in */*local*/, |
137 | const struct sockaddr_in */*remote*/, |
138 | void (*/*func*/)(ident_reply */*i*/, void */*p*/), |
139 | void */*p*/); |
140 | |
141 | /* --- @ident_socket@ --- * |
142 | * |
143 | * Arguments: @ident_request *rq@ = pointer to request block |
144 | * @sel_state *s@ = I/O multiplexor |
145 | * @int sk@ = connected socket file descriptor |
146 | * @void (*func)(ident_reply *i, void *p)@ = handler function |
147 | * @void *p@ = argument for handler |
148 | * |
149 | * Returns: --- |
150 | * |
151 | * Use: An alternative interface to @ident@. Initializes an ident |
152 | * request from a connected socket, rather than from an explicit |
153 | * address. This will call @getsockname@ and @getpeername@ to |
154 | * find out what the socket is actually connected to, which adds |
155 | * convenience but wastes time. |
156 | */ |
157 | |
158 | extern void ident_socket(ident_request */*rq*/, sel_state */*s*/, int /*sk*/, |
159 | void (*/*func*/)(ident_reply */*i*/, void */*p*/), |
160 | void */*p*/); |
161 | |
162 | /*----- That's all, folks -------------------------------------------------*/ |
163 | |
164 | #ifdef __cplusplus |
165 | } |
166 | #endif |
167 | |
168 | #endif |