contrib/bind-9.5.2/lib/bind/irs/irp_ng.c

   1 /*
   2  * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
   3  * Copyright (c) 1996, 1998 by Internet Software Consortium.
   4  *
   5  * Permission to use, copy, modify, and distribute this software for any
   6  * purpose with or without fee is hereby granted, provided that the above
   7  * copyright notice and this permission notice appear in all copies.
   8  *
   9  * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES
  10  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  11  * MERCHANTABILITY AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR
  12  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  13  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  14  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
  15  * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  16  */
  17
  18 #if !defined(LINT) && !defined(CODECENTER)
  19 static const char rcsid[] = "$Id: irp_ng.c,v 1.4 2006/12/07 04:46:27 marka Exp $";
  20 #endif
  21
  22 /* Imports */
  23
  24 #include "port_before.h"
  25
  26 #include <errno.h>
  27 #include <stdio.h>
  28 #include <stdlib.h>
  29 #include <string.h>
  30 #include <unistd.h>
  31 #include <syslog.h>
  32
  33 #include <irs.h>
  34 #include <irp.h>
  35 #include <isc/memcluster.h>
  36 #include <isc/irpmarshall.h>
  37
  38 #include "irs_p.h"
  39 #include "irp_p.h"
  40
  41 #include "port_after.h"
  42
  43 /* Definitions */
  44
  45 struct pvt {
  46         struct irp_p           *girpdata;
  47         int                     warned;
  48 };
  49
  50
  51 /* Forward */
  52
  53 static void             ng_rewind(struct irs_ng *, const char*);
  54 static void             ng_close(struct irs_ng *);
  55 static int              ng_next(struct irs_ng *, const char **, const char **,
  56                                 const char **);
  57 static int              ng_test(struct irs_ng *, const char *,
  58                                 const char *, const char *,
  59                                 const char *);
  60 static void             ng_minimize(struct irs_ng *);
  61
  62
  63 /* Public */
  64
  65 /*%
  66  *      Intialize the irp netgroup module.
  67  *
  68  */
  69
  70 struct irs_ng *
  71 irs_irp_ng(struct irs_acc *this) {
  72         struct irs_ng *ng;
  73         struct pvt *pvt;
  74
  75         if (!(ng = memget(sizeof *ng))) {
  76                 errno = ENOMEM;
  77                 return (NULL);
  78         }
  79         memset(ng, 0x5e, sizeof *ng);
  80
  81         if (!(pvt = memget(sizeof *pvt))) {
  82                 memput(ng, sizeof *ng);
  83                 errno = ENOMEM;
  84                 return (NULL);
  85         }
  86         memset(pvt, 0, sizeof *pvt);
  87         pvt->girpdata = this->private;
  88
  89         ng->private = pvt;
  90         ng->close = ng_close;
  91         ng->next = ng_next;
  92         ng->test = ng_test;
  93         ng->rewind = ng_rewind;
  94         ng->minimize = ng_minimize;
  95         return (ng);
  96 }
  97
  98 /* Methods */
  99
 100
 101
 102 /*
 103  * void ng_close(struct irs_ng *this)
 104  *
 105  */
 106
 107 static void
 108 ng_close(struct irs_ng *this) {
 109         struct pvt *pvt = (struct pvt *)this->private;
 110
 111         ng_minimize(this);
 112
 113         memput(pvt, sizeof *pvt);
 114         memput(this, sizeof *this);
 115 }
 116
 117
 118
 119
 120 /*
 121  * void ng_rewind(struct irs_ng *this, const char *group)
 122  *
 123  *
 124  */
 125
 126 static void
 127 ng_rewind(struct irs_ng *this, const char *group) {
 128         struct pvt *pvt = (struct pvt *)this->private;
 129         char text[256];
 130         int code;
 131
 132         if (irs_irp_connection_setup(pvt->girpdata, &pvt->warned) != 0) {
 133                 return;
 134         }
 135
 136         if (irs_irp_send_command(pvt->girpdata,
 137                                  "setnetgrent %s", group) != 0) {
 138                 return;
 139         }
 140
 141         code = irs_irp_read_response(pvt->girpdata, text, sizeof text);
 142         if (code != IRPD_GETNETGR_SETOK) {
 143                 if (irp_log_errors) {
 144                         syslog(LOG_WARNING, "setnetgrent(%s) failed: %s",
 145                                group, text);
 146                 }
 147         }
 148
 149         return;
 150 }
 151
 152 /*
 153  *      Get the next netgroup item from the cache.
 154  *
 155  */
 156
 157 static int
 158 ng_next(struct irs_ng *this, const char **host, const char **user,
 159         const char **domain)
 160 {
 161         struct pvt *pvt = (struct pvt *)this->private;
 162         int code;
 163         char *body = NULL;
 164         size_t bodylen;
 165         int rval = 0;
 166         char text[256];
 167
 168         if (irs_irp_connection_setup(pvt->girpdata, &pvt->warned) != 0) {
 169                 return (0);
 170         }
 171
 172         if (irs_irp_send_command(pvt->girpdata, "getnetgrent") != 0)
 173                 return (0);
 174
 175         if (irs_irp_get_full_response(pvt->girpdata, &code,
 176                                       text, sizeof text,
 177                                       &body, &bodylen) != 0) {
 178                 return (0);
 179         }
 180
 181         if (code == IRPD_GETNETGR_OK) {
 182                 if (irp_unmarshall_ng(host, user, domain, body) == 0) {
 183                         rval = 1;
 184                 }
 185         }
 186
 187         if (body != NULL) {
 188                 memput(body, bodylen);
 189         }
 190
 191         return (rval);
 192 }
 193
 194 /*
 195  *      Search for a match in a netgroup.
 196  *
 197  */
 198
 199 static int
 200 ng_test(struct irs_ng *this, const char *name,
 201         const char *host, const char *user, const char *domain)
 202 {
 203         struct pvt *pvt = (struct pvt *)this->private;
 204         char *body = NULL;
 205         size_t bodylen = 0;
 206         int code;
 207         char text[256];
 208         int rval = 0;
 209
 210         UNUSED(name);
 211
 212         if (irs_irp_connection_setup(pvt->girpdata, &pvt->warned) != 0) {
 213                 return (0);
 214         }
 215
 216         if (irp_marshall_ng(host, user, domain, &body, &bodylen) != 0) {
 217                 return (0);
 218         }
 219
 220         if (irs_irp_send_command(pvt->girpdata, "innetgr %s", body) == 0) {
 221                 code = irs_irp_read_response(pvt->girpdata, text, sizeof text);
 222                 if (code == IRPD_GETNETGR_MATCHES) {
 223                         rval = 1;
 224                 }
 225         }
 226
 227         memput(body, bodylen);
 228
 229         return (rval);
 230 }
 231
 232
 233
 234
 235 /*
 236  * void ng_minimize(struct irs_ng *this)
 237  *
 238  */
 239
 240 static void
 241 ng_minimize(struct irs_ng *this) {
 242         struct pvt *pvt = (struct pvt *)this->private;
 243
 244         irs_irp_disconnect(pvt->girpdata);
 245 }
 246
 247
 248
 249
 250 /* Private */
 251
 252
 253 /*! \file */