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 <netdb.h> 29 #include <netinet/in.h> 30 #include <arpa/inet.h> 31 #include <sys/socket.h> 32 #include "ldap_common.h" 33 34 /* netmasks attributes filters */ 35 #define _N_NETWORK "ipnetworknumber" 36 #define _N_NETMASK "ipnetmasknumber" 37 38 #define _F_GETMASKBYNET "(&(objectClass=ipNetwork)(ipNetworkNumber=%s))" 39 #define _F_GETMASKBYNET_SSD "(&(%%s)(ipNetworkNumber=%s))" 40 41 static const char *netmasks_attrs[] = { 42 _N_NETWORK, 43 _N_NETMASK, 44 (char *)NULL 45 }; 46 47 48 /* 49 * _nss_ldap_netmasks2str is the data marshaling method for the netmasks 50 * getXbyY * (e.g., getnetmaskby[net|addr]()) backend processes. 51 * This method is called after a successful ldap search has been performed. 52 * This method will parse the ldap search values into the file format. 53 * 54 * getnetmaskbykey set argp->buf.buffer to NULL and argp->buf.buflen to 0 55 * and argp->buf.result to non-NULL. 56 * The front end marshaller str2add expects "netmask" only 57 * 58 * e.g. 59 * 60 * 255.255.255.0 61 * 62 * 63 */ 64 65 static int 66 _nss_ldap_netmasks2str(ldap_backend_ptr be, nss_XbyY_args_t *argp) 67 { 68 int nss_result, len; 69 ns_ldap_result_t *result = be->result; 70 char *buffer, **netmask; 71 72 if (result == NULL) 73 return (NSS_STR_PARSE_PARSE); 74 75 nss_result = NSS_STR_PARSE_SUCCESS; 76 77 netmask = __ns_ldap_getAttr(result->entry, _N_NETMASK); 78 if (netmask == NULL || netmask[0] == NULL || 79 (strlen(netmask[0]) < 1)) { 80 nss_result = NSS_STR_PARSE_PARSE; 81 goto result_nmks2str; 82 } 83 /* Add a trailing null for debugging purpose */ 84 len = strlen(netmask[0]) + 1; 85 if (argp->buf.result != NULL) { 86 if ((be->buffer = calloc(1, len)) == NULL) { 87 nss_result = NSS_STR_PARSE_PARSE; 88 goto result_nmks2str; 89 } 90 be->buflen = len - 1; 91 buffer = be->buffer; 92 } else 93 buffer = argp->buf.buffer; 94 95 96 (void) snprintf(buffer, len, "%s", netmask[0]); 97 98 result_nmks2str: 99 100 (void) __ns_ldap_freeResult(&be->result); 101 return ((int)nss_result); 102 } 103 104 /* 105 * getbynet gets a network mask by address. This function constructs an 106 * ldap search filter using the netmask name invocation parameter and the 107 * getmaskbynet search filter defined. Once the filter is constructed, we 108 * search for a matching entry and marshal the data results into struct 109 * in_addr for the frontend process. The function _nss_ldap_netmasks2ent 110 * performs the data marshaling. 111 */ 112 113 static nss_status_t 114 getbynet(ldap_backend_ptr be, void *a) 115 { 116 nss_XbyY_args_t *argp = (nss_XbyY_args_t *)a; 117 char searchfilter[SEARCHFILTERLEN]; 118 char userdata[SEARCHFILTERLEN]; 119 char netnumber[SEARCHFILTERLEN]; 120 int ret; 121 122 if (_ldap_filter_name(netnumber, argp->key.name, sizeof (netnumber)) 123 != 0) 124 return ((nss_status_t)NSS_NOTFOUND); 125 ret = snprintf(searchfilter, sizeof (searchfilter), 126 _F_GETMASKBYNET, netnumber); 127 if (ret >= sizeof (searchfilter) || ret < 0) 128 return ((nss_status_t)NSS_NOTFOUND); 129 130 ret = snprintf(userdata, sizeof (userdata), 131 _F_GETMASKBYNET_SSD, netnumber); 132 if (ret >= sizeof (userdata) || ret < 0) 133 return ((nss_status_t)NSS_NOTFOUND); 134 135 return ((nss_status_t)_nss_ldap_lookup(be, argp, 136 _NETMASKS, searchfilter, NULL, 137 _merge_SSD_filter, userdata)); 138 } 139 140 141 static ldap_backend_op_t netmasks_ops[] = { 142 _nss_ldap_destr, 143 getbynet 144 }; 145 146 147 /* 148 * _nss_ldap_netmasks_constr is where life begins. This function calls 149 * the generic ldap constructor function to define and build the abstract 150 * data types required to support ldap operations. 151 */ 152 153 /*ARGSUSED0*/ 154 nss_backend_t * 155 _nss_ldap_netmasks_constr(const char *dummy1, const char *dummy2, 156 const char *dummy3) 157 { 158 159 return ((nss_backend_t *)_nss_ldap_constr(netmasks_ops, 160 sizeof (netmasks_ops)/sizeof (netmasks_ops[0]), _NETMASKS, 161 netmasks_attrs, _nss_ldap_netmasks2str)); 162 } 163