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 #include <netdb.h> 27 #include <netinet/in.h> 28 #include <arpa/inet.h> 29 #include <sys/socket.h> 30 #include "ldap_common.h" 31 32 /* netmasks attributes filters */ 33 #define _N_NETWORK "ipnetworknumber" 34 #define _N_NETMASK "ipnetmasknumber" 35 36 #define _F_GETMASKBYNET "(&(objectClass=ipNetwork)(ipNetworkNumber=%s))" 37 #define _F_GETMASKBYNET_SSD "(&(%%s)(ipNetworkNumber=%s))" 38 39 static const char *netmasks_attrs[] = { 40 _N_NETWORK, 41 _N_NETMASK, 42 (char *)NULL 43 }; 44 45 46 /* 47 * _nss_ldap_netmasks2str is the data marshaling method for the netmasks 48 * getXbyY * (e.g., getnetmaskby[net|addr]()) backend processes. 49 * This method is called after a successful ldap search has been performed. 50 * This method will parse the ldap search values into the file format. 51 * 52 * getnetmaskbykey set argp->buf.buffer to NULL and argp->buf.buflen to 0 53 * and argp->buf.result to non-NULL. 54 * The front end marshaller str2add expects "netmask" only 55 * 56 * e.g. 57 * 58 * 255.255.255.0 59 * 60 * 61 */ 62 63 static int 64 _nss_ldap_netmasks2str(ldap_backend_ptr be, nss_XbyY_args_t *argp) 65 { 66 int nss_result, len; 67 ns_ldap_result_t *result = be->result; 68 char *buffer, **netmask; 69 70 if (result == NULL) 71 return (NSS_STR_PARSE_PARSE); 72 73 nss_result = NSS_STR_PARSE_SUCCESS; 74 75 netmask = __ns_ldap_getAttr(result->entry, _N_NETMASK); 76 if (netmask == NULL || netmask[0] == NULL || 77 (strlen(netmask[0]) < 1)) { 78 nss_result = NSS_STR_PARSE_PARSE; 79 goto result_nmks2str; 80 } 81 /* Add a trailing null for debugging purpose */ 82 len = strlen(netmask[0]) + 1; 83 if (argp->buf.result != NULL) { 84 if ((be->buffer = calloc(1, len)) == NULL) { 85 nss_result = NSS_STR_PARSE_PARSE; 86 goto result_nmks2str; 87 } 88 be->buflen = len - 1; 89 buffer = be->buffer; 90 } else 91 buffer = argp->buf.buffer; 92 93 94 (void) snprintf(buffer, len, "%s", netmask[0]); 95 96 result_nmks2str: 97 98 (void) __ns_ldap_freeResult(&be->result); 99 return ((int)nss_result); 100 } 101 102 /* 103 * getbynet gets a network mask by address. This function constructs an 104 * ldap search filter using the netmask name invocation parameter and the 105 * getmaskbynet search filter defined. Once the filter is constructed, we 106 * search for a matching entry and marshal the data results into struct 107 * in_addr for the frontend process. The function _nss_ldap_netmasks2ent 108 * performs the data marshaling. 109 */ 110 111 static nss_status_t 112 getbynet(ldap_backend_ptr be, void *a) 113 { 114 nss_XbyY_args_t *argp = (nss_XbyY_args_t *)a; 115 char searchfilter[SEARCHFILTERLEN]; 116 char userdata[SEARCHFILTERLEN]; 117 char netnumber[SEARCHFILTERLEN]; 118 int ret; 119 120 if (_ldap_filter_name(netnumber, argp->key.name, sizeof (netnumber)) 121 != 0) 122 return ((nss_status_t)NSS_NOTFOUND); 123 ret = snprintf(searchfilter, sizeof (searchfilter), 124 _F_GETMASKBYNET, netnumber); 125 if (ret >= sizeof (searchfilter) || ret < 0) 126 return ((nss_status_t)NSS_NOTFOUND); 127 128 ret = snprintf(userdata, sizeof (userdata), 129 _F_GETMASKBYNET_SSD, netnumber); 130 if (ret >= sizeof (userdata) || ret < 0) 131 return ((nss_status_t)NSS_NOTFOUND); 132 133 return ((nss_status_t)_nss_ldap_lookup(be, argp, 134 _NETMASKS, searchfilter, NULL, 135 _merge_SSD_filter, userdata)); 136 } 137 138 139 static ldap_backend_op_t netmasks_ops[] = { 140 _nss_ldap_destr, 141 getbynet 142 }; 143 144 145 /* 146 * _nss_ldap_netmasks_constr is where life begins. This function calls 147 * the generic ldap constructor function to define and build the abstract 148 * data types required to support ldap operations. 149 */ 150 151 /*ARGSUSED0*/ 152 nss_backend_t * 153 _nss_ldap_netmasks_constr(const char *dummy1, const char *dummy2, 154 const char *dummy3) 155 { 156 157 return ((nss_backend_t *)_nss_ldap_constr(netmasks_ops, 158 sizeof (netmasks_ops)/sizeof (netmasks_ops[0]), _NETMASKS, 159 netmasks_attrs, _nss_ldap_netmasks2str)); 160 } 161