1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2006 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 #pragma ident "%Z%%M% %I% %E% SMI" 27 28 #include "files_common.h" 29 #include <string.h> 30 #include <libtsnet.h> 31 #include <netinet/in.h> 32 33 /* 34 * files/tsol_getrhent.c -- 35 * "files" backend for nsswitch "tnrhdb" database 36 */ 37 static int 38 check_addr(nss_XbyY_args_t *args, const char *line, int linelen) 39 { 40 const char *limit, *linep, *keyp; 41 char prev; 42 int ipv6; 43 44 linep = line; 45 limit = line + linelen; 46 keyp = args->key.hostaddr.addr; 47 prev = '\0'; 48 49 if (strstr(linep, "\\:") != NULL) 50 ipv6 = 1; 51 else 52 ipv6 = 0; 53 54 /* 55 * compare addr in 56 * 57 * 192.168.120.6:public 58 * fec0\:\:a00\:20ff\:fea0\:21f7:cipso 59 * 60 * ':' is the seperator. 61 */ 62 63 while (*keyp && linep < limit && *keyp == *linep) { 64 if ((ipv6 == 0 && *linep == ':') || 65 (ipv6 == 1 && prev != '\\' && *linep == ':')) 66 break; 67 68 prev = *linep; 69 keyp++; 70 linep++; 71 } 72 if (*keyp == '\0' && linep < limit && ((ipv6 == 0 && *linep == ':') || 73 (ipv6 == 1 && prev != '\\' && *linep == ':'))) 74 return (1); 75 76 return (0); 77 } 78 79 static void 80 escape_colon(const char *in, char *out) { 81 int i, j; 82 for (i = 0, j = 0; in[i] != '\0'; i++) { 83 if (in[i] == ':') { 84 out[j++] = '\\'; 85 out[j++] = in[i]; 86 } else 87 out[j++] = in[i]; 88 } 89 out[j] = '\0'; 90 } 91 92 static nss_status_t 93 getbyaddr(files_backend_ptr_t be, void *a) 94 { 95 nss_XbyY_args_t *argp = a; 96 char addr6[INET6_ADDRSTRLEN + 5]; /* 5 '\' for ':' */ 97 const char *addr = NULL; 98 nss_status_t rc; 99 100 if (argp->key.hostaddr.addr == NULL || 101 (argp->key.hostaddr.type != AF_INET && 102 argp->key.hostaddr.type != AF_INET6)) 103 return (NSS_NOTFOUND); 104 if (strchr(argp->key.hostaddr.addr, ':') != NULL) { 105 /* IPV6 */ 106 if (argp->key.hostaddr.type == AF_INET) 107 return (NSS_NOTFOUND); 108 escape_colon(argp->key.hostaddr.addr, addr6); 109 /* save the key in original format */ 110 addr = argp->key.hostaddr.addr; 111 /* Replace the key with escaped format */ 112 argp->key.hostaddr.addr = addr6; 113 } else { 114 /* IPV4 */ 115 if (argp->key.hostaddr.type == AF_INET6) 116 return (NSS_NOTFOUND); 117 } 118 119 rc = _nss_files_XY_all(be, argp, 1, 120 argp->key.hostaddr.addr, check_addr); 121 122 /* restore argp->key.hostaddr.addr */ 123 if (addr) 124 argp->key.hostaddr.addr = addr; 125 126 return (rc); 127 } 128 129 static files_backend_op_t tsol_rh_ops[] = { 130 _nss_files_destr, 131 _nss_files_endent, 132 _nss_files_setent, 133 _nss_files_getent_netdb, 134 getbyaddr 135 }; 136 137 nss_backend_t * 138 /* LINTED E_FUNC_ARG_UNUSED */ 139 _nss_files_tnrhdb_constr(const char *dummy1, const char *dummy2, 140 /* LINTED E_FUNC_ARG_UNUSED */ 141 const char *dummy3) 142 { 143 return (_nss_files_constr(tsol_rh_ops, 144 sizeof (tsol_rh_ops) / sizeof (tsol_rh_ops[0]), TNRHDB_PATH, 145 NSS_LINELEN_TSOL_RH, NULL)); 146 } 147