1 /* 2 * Routines for controlled update/initialization of request structures. 3 * 4 * request_init() initializes its argument. Pointers and string-valued members 5 * are initialized to zero, to indicate that no lookup has been attempted. 6 * 7 * request_set() adds information to an already initialized request structure. 8 * 9 * Both functions take a variable-length name-value list. 10 * 11 * Diagnostics are reported through syslog(3). 12 * 13 * Author: Wietse Venema, Eindhoven University of Technology, The Netherlands. 14 * 15 * $FreeBSD: src/contrib/tcp_wrappers/update.c,v 1.2 2000/02/03 10:27:00 shin Exp $ 16 * $DragonFly: src/contrib/tcp_wrappers/update.c,v 1.2 2003/06/17 04:24:06 dillon Exp $ 17 */ 18 19 #ifndef lint 20 static char sccsid[] = "@(#) update.c 1.1 94/12/28 17:42:56"; 21 #endif 22 23 /* System libraries */ 24 25 #include <stdio.h> 26 #include <syslog.h> 27 #include <string.h> 28 29 /* Local stuff. */ 30 31 #include "mystdarg.h" 32 #include "tcpd.h" 33 34 /* request_fill - request update engine */ 35 36 static struct request_info *request_fill(request, ap) 37 struct request_info *request; 38 va_list ap; 39 { 40 int key; 41 char *ptr; 42 43 while ((key = va_arg(ap, int)) > 0) { 44 switch (key) { 45 default: 46 tcpd_warn("request_fill: invalid key: %d", key); 47 return (request); 48 case RQ_FILE: 49 request->fd = va_arg(ap, int); 50 continue; 51 case RQ_CLIENT_SIN: 52 #ifdef INET6 53 request->client->sin = va_arg(ap, struct sockaddr *); 54 #else 55 request->client->sin = va_arg(ap, struct sockaddr_in *); 56 #endif 57 continue; 58 case RQ_SERVER_SIN: 59 #ifdef INET6 60 request->server->sin = va_arg(ap, struct sockaddr *); 61 #else 62 request->server->sin = va_arg(ap, struct sockaddr_in *); 63 #endif 64 continue; 65 66 /* 67 * All other fields are strings with the same maximal length. 68 */ 69 70 case RQ_DAEMON: 71 ptr = request->daemon; 72 break; 73 case RQ_USER: 74 ptr = request->user; 75 break; 76 case RQ_CLIENT_NAME: 77 ptr = request->client->name; 78 break; 79 case RQ_CLIENT_ADDR: 80 ptr = request->client->addr; 81 break; 82 case RQ_SERVER_NAME: 83 ptr = request->server->name; 84 break; 85 case RQ_SERVER_ADDR: 86 ptr = request->server->addr; 87 break; 88 } 89 STRN_CPY(ptr, va_arg(ap, char *), STRING_LENGTH); 90 } 91 return (request); 92 } 93 94 /* request_init - initialize request structure */ 95 96 struct request_info *VARARGS(request_init, struct request_info *, request) 97 { 98 static struct request_info default_info; 99 struct request_info *r; 100 va_list ap; 101 102 /* 103 * Initialize data members. We do not assign default function pointer 104 * members, to avoid pulling in the whole socket module when it is not 105 * really needed. 106 */ 107 VASTART(ap, struct request_info *, request); 108 *request = default_info; 109 request->fd = -1; 110 strcpy(request->daemon, unknown); 111 sprintf(request->pid, "%d", getpid()); 112 request->client->request = request; 113 request->server->request = request; 114 r = request_fill(request, ap); 115 VAEND(ap); 116 return (r); 117 } 118 119 /* request_set - update request structure */ 120 121 struct request_info *VARARGS(request_set, struct request_info *, request) 122 { 123 struct request_info *r; 124 va_list ap; 125 126 VASTART(ap, struct request_info *, request); 127 r = request_fill(request, ap); 128 VAEND(ap); 129 return (r); 130 } 131