contrib/bind-9.2.4rc7/lib/bind/irs/irp_pr.c

   1 /*
   2  * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
   3  * Portions Copyright (c) 1996 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(LIBC_SCCS) && !defined(lint)
  19 static const char rcsid[] = "$Id: irp_pr.c,v 1.1.2.1 2004/03/09 09:17:31 marka Exp $";
  20 #endif /* LIBC_SCCS and not lint */
  21
  22 /* extern */
  23
  24 #include "port_before.h"
  25
  26 #include <syslog.h>
  27 #include <sys/types.h>
  28
  29 #include <errno.h>
  30 #include <fcntl.h>
  31 #include <string.h>
  32 #include <stdio.h>
  33 #include <stdlib.h>
  34 #include <netdb.h>
  35 #include <syslog.h>
  36
  37 #include <irs.h>
  38 #include <irp.h>
  39 #include <isc/memcluster.h>
  40 #include <isc/irpmarshall.h>
  41
  42 #include "irs_p.h"
  43 #include "lcl_p.h"
  44 #include "irp_p.h"
  45
  46 #include "port_after.h"
  47
  48
  49 #define MAXALIASES      35
  50
  51 /* Types */
  52
  53 struct pvt {
  54         struct irp_p           *girpdata;
  55         int                     warned;
  56         struct protoent         proto;
  57 };
  58
  59 /* Forward */
  60
  61 static void                     pr_close(struct irs_pr *);
  62 static struct protoent *        pr_next(struct irs_pr *);
  63 static struct protoent *        pr_byname(struct irs_pr *, const char *);
  64 static struct protoent *        pr_bynumber(struct irs_pr *, int);
  65 static void                     pr_rewind(struct irs_pr *);
  66 static void                     pr_minimize(struct irs_pr *);
  67
  68 static void                     free_proto(struct protoent *pr);
  69
  70 /* Public */
  71
  72
  73
  74 /*
  75  * struct irs_pr * irs_irp_pr(struct irs_acc *this)
  76  *
  77  */
  78
  79 struct irs_pr *
  80 irs_irp_pr(struct irs_acc *this) {
  81         struct irs_pr *pr;
  82         struct pvt *pvt;
  83
  84         if (!(pr = memget(sizeof *pr))) {
  85                 errno = ENOMEM;
  86                 return (NULL);
  87         }
  88         memset(pr, 0x0, sizeof *pr);
  89
  90         if (!(pvt = memget(sizeof *pvt))) {
  91                 memput(pr, sizeof *pr);
  92                 errno = ENOMEM;
  93                 return (NULL);
  94         }
  95         memset(pvt, 0, sizeof *pvt);
  96         pvt->girpdata = this->private;
  97
  98         pr->private = pvt;
  99         pr->close = pr_close;
 100         pr->byname = pr_byname;
 101         pr->bynumber = pr_bynumber;
 102         pr->next = pr_next;
 103         pr->rewind = pr_rewind;
 104         pr->minimize = pr_minimize;
 105         return (pr);
 106 }
 107
 108 /* Methods */
 109
 110
 111
 112 /*
 113  * void pr_close(struct irs_pr *this)
 114  *
 115  */
 116
 117 static void
 118 pr_close(struct irs_pr *this) {
 119         struct pvt *pvt = (struct pvt *)this->private;
 120
 121         pr_minimize(this);
 122
 123         free_proto(&pvt->proto);
 124
 125         memput(pvt, sizeof *pvt);
 126         memput(this, sizeof *this);
 127 }
 128
 129
 130
 131 /*
 132  * struct protoent * pr_byname(struct irs_pr *this, const char *name)
 133  *
 134  */
 135
 136 static struct protoent *
 137 pr_byname(struct irs_pr *this, const char *name) {
 138         struct pvt *pvt = (struct pvt *)this->private;
 139         struct protoent *pr = &pvt->proto;
 140         char *body = NULL;
 141         size_t bodylen;
 142         int code;
 143         int i;
 144         char text[256];
 145
 146         if (pr->p_name != NULL && strcmp(name, pr->p_name) == 0) {
 147                 return (pr);
 148         }
 149
 150         if (irs_irp_connection_setup(pvt->girpdata, &pvt->warned) != 0) {
 151                 return (NULL);
 152         }
 153
 154         i = irs_irp_send_command(pvt->girpdata, "getprotobyname %s", name);
 155         if (i != 0)
 156                 return (NULL);
 157
 158         if (irs_irp_get_full_response(pvt->girpdata, &code,
 159                                       text, sizeof text,
 160                                       &body, &bodylen) != 0) {
 161                 return (NULL);
 162         }
 163
 164         if (code == IRPD_GETPROTO_OK) {
 165                 free_proto(pr);
 166                 if (irp_unmarshall_pr(pr, body) != 0) {
 167                         pr = NULL;
 168                 }
 169         } else {
 170                 pr = NULL;
 171         }
 172
 173         if (body != NULL) {
 174                 memput(body, bodylen);
 175         }
 176
 177         return (pr);
 178 }
 179
 180
 181
 182 /*
 183  * struct protoent * pr_bynumber(struct irs_pr *this, int proto)
 184  *
 185  */
 186
 187 static struct protoent *
 188 pr_bynumber(struct irs_pr *this, int proto) {
 189         struct pvt *pvt = (struct pvt *)this->private;
 190         struct protoent *pr = &pvt->proto;
 191         char *body = NULL;
 192         size_t bodylen;
 193         int code;
 194         int i;
 195         char text[256];
 196
 197         if (pr->p_name != NULL && proto == pr->p_proto) {
 198                 return (pr);
 199         }
 200
 201         if (irs_irp_connection_setup(pvt->girpdata, &pvt->warned) != 0) {
 202                 return (NULL);
 203         }
 204
 205         i = irs_irp_send_command(pvt->girpdata, "getprotobynumber %d", proto);
 206         if (i != 0)
 207                 return (NULL);
 208
 209         if (irs_irp_get_full_response(pvt->girpdata, &code,
 210                                       text, sizeof text,
 211                                       &body, &bodylen) != 0) {
 212                 return (NULL);
 213         }
 214
 215         if (code == IRPD_GETPROTO_OK) {
 216                 free_proto(pr);
 217                 if (irp_unmarshall_pr(pr, body) != 0) {
 218                         pr = NULL;
 219                 }
 220         } else {
 221                 pr = NULL;
 222         }
 223
 224         if (body != NULL) {
 225                 memput(body, bodylen);
 226         }
 227
 228         return (pr);
 229 }
 230
 231
 232
 233
 234 /*
 235  * void pr_rewind(struct irs_pr *this)
 236  *
 237  */
 238
 239 static void
 240 pr_rewind(struct irs_pr *this) {
 241         struct pvt *pvt = (struct pvt *)this->private;
 242         char text[256];
 243         int code;
 244
 245         if (irs_irp_connection_setup(pvt->girpdata, &pvt->warned) != 0) {
 246                 return;
 247         }
 248
 249         if (irs_irp_send_command(pvt->girpdata, "setprotoent") != 0) {
 250                 return;
 251         }
 252
 253         code = irs_irp_read_response(pvt->girpdata, text, sizeof text);
 254         if (code != IRPD_GETPROTO_SETOK) {
 255                 if (irp_log_errors) {
 256                         syslog(LOG_WARNING, "setprotoent failed: %s", text);
 257                 }
 258         }
 259
 260         return;
 261 }
 262
 263
 264
 265
 266 /*
 267  * struct protoent * pr_next(struct irs_pr *this)
 268  *
 269  * Notes:
 270  *
 271  *      Prepares the cache if necessary and returns the next item in it.
 272  *
 273  */
 274
 275 static struct protoent *
 276 pr_next(struct irs_pr *this) {
 277         struct pvt *pvt = (struct pvt *)this->private;
 278         struct protoent *pr = &pvt->proto;
 279         char *body;
 280         size_t bodylen;
 281         int code;
 282         char text[256];
 283
 284         if (irs_irp_connection_setup(pvt->girpdata, &pvt->warned) != 0) {
 285                 return (NULL);
 286         }
 287
 288         if (irs_irp_send_command(pvt->girpdata, "getprotoent") != 0) {
 289                 return (NULL);
 290         }
 291
 292         if (irs_irp_get_full_response(pvt->girpdata, &code,
 293                                       text, sizeof text,
 294                                       &body, &bodylen) != 0) {
 295                 return (NULL);
 296         }
 297
 298         if (code == IRPD_GETPROTO_OK) {
 299                 free_proto(pr);
 300                 if (irp_unmarshall_pr(pr, body) != 0) {
 301                         pr = NULL;
 302                 }
 303         } else {
 304                 pr = NULL;
 305         }
 306
 307         if (body != NULL) {
 308                 memput(body, bodylen);
 309         }
 310
 311         return (pr);
 312 }
 313
 314
 315
 316
 317 /*
 318  * void pr_minimize(struct irs_pr *this)
 319  *
 320  */
 321
 322 static void
 323 pr_minimize(struct irs_pr *this) {
 324         struct pvt *pvt = (struct pvt *)this->private;
 325
 326         irs_irp_disconnect(pvt->girpdata);
 327 }
 328
 329
 330
 331
 332
 333
 334 /*
 335  * static void free_proto(struct protoent *pw);
 336  *
 337  *      Deallocate all the memory irp_unmarshall_pr allocated.
 338  *
 339  */
 340
 341 static void
 342 free_proto(struct protoent *pr) {
 343         char **p;
 344
 345         if (pr == NULL)
 346                 return;
 347
 348         if (pr->p_name != NULL)
 349                 free(pr->p_name);
 350
 351         for (p = pr->p_aliases ; p != NULL && *p != NULL ; p++)
 352                 free(*p);
 353 }