1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
|
/* $OpenBSD: update.c,v 1.6 2009/10/27 23:59:30 deraadt Exp $ */
/*
* Routines for controlled update/initialization of request structures.
*
* request_init() initializes its argument. Pointers and string-valued members
* are initialized to zero, to indicate that no lookup has been attempted.
*
* request_set() adds information to an already initialized request structure.
*
* Both functions take a variable-length name-value list.
*
* Diagnostics are reported through syslog(3).
*
* Author: Wietse Venema, Eindhoven University of Technology, The Netherlands.
*/
/* System libraries */
#include <stdio.h>
#include <stdarg.h>
#include <syslog.h>
#include <string.h>
#include <unistd.h>
/* Local stuff. */
#include "tcpd.h"
/* request_fill - request update engine */
static struct request_info *request_fill(request, ap)
struct request_info *request;
va_list ap;
{
int key;
char *ptr;
while ((key = va_arg(ap, int)) > 0) {
switch (key) {
default:
tcpd_warn("request_fill: invalid key: %d", key);
return (request);
case RQ_FILE:
request->fd = va_arg(ap, int);
continue;
case RQ_CLIENT_SIN:
request->client->sin = va_arg(ap, struct sockaddr *);
continue;
case RQ_SERVER_SIN:
request->server->sin = va_arg(ap, struct sockaddr *);
continue;
/*
* All other fields are strings with the same maximal length.
*/
case RQ_DAEMON:
ptr = request->daemon;
break;
case RQ_USER:
ptr = request->user;
break;
case RQ_CLIENT_NAME:
ptr = request->client->name;
break;
case RQ_CLIENT_ADDR:
ptr = request->client->addr;
break;
case RQ_SERVER_NAME:
ptr = request->server->name;
break;
case RQ_SERVER_ADDR:
ptr = request->server->addr;
break;
}
strlcpy(ptr, va_arg(ap, char *), STRING_LENGTH);
}
return (request);
}
/* request_init - initialize request structure */
struct request_info *request_init(struct request_info *request, ...)
{
static struct request_info default_info;
struct request_info *r;
va_list ap;
/*
* Initialize data members. We do not assign default function pointer
* members, to avoid pulling in the whole socket module when it is not
* really needed.
*/
va_start(ap, request);
*request = default_info;
request->fd = -1;
strlcpy(request->daemon, unknown, sizeof(request->daemon));
snprintf(request->pid, sizeof(request->pid), "%ld", (long)getpid());
request->client->request = request;
request->server->request = request;
r = request_fill(request, ap);
va_end(ap);
return (r);
}
/* request_set - update request structure */
struct request_info *request_set(struct request_info *request, ...)
{
struct request_info *r;
va_list ap;
va_start(ap, request);
r = request_fill(request, ap);
va_end(ap);
return (r);
}
|
