contrib/bind-9.5.2/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 1.3 2005/04/27 04:56:29 sra 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  * struct irs_pr * irs_irp_pr(struct irs_acc *this)
  74  *
  75  */
  76
  77 struct irs_pr *
  78 irs_irp_pr(struct irs_acc *this) {
  79         struct irs_pr *pr;
  80         struct pvt *pvt;
  81
  82         if (!(pr = memget(sizeof *pr))) {
  83                 errno = ENOMEM;
  84                 return (NULL);
  85         }
  86         memset(pr, 0x0, sizeof *pr);
  87
  88         if (!(pvt = memget(sizeof *pvt))) {
  89                 memput(pr, sizeof *pr);
  90                 errno = ENOMEM;
  91                 return (NULL);
  92         }
  93         memset(pvt, 0, sizeof *pvt);
  94         pvt->girpdata = this->private;
  95
  96         pr->private = pvt;
  97         pr->close = pr_close;
  98         pr->byname = pr_byname;
  99         pr->bynumber = pr_bynumber;
 100         pr->next = pr_next;
 101         pr->rewind = pr_rewind;
 102         pr->minimize = pr_minimize;
 103         return (pr);
 104 }
 105
 106 /* Methods */
 107
 108 /*%
 109  * void pr_close(struct irs_pr *this)
 110  *
 111  */
 112
 113 static void
 114 pr_close(struct irs_pr *this) {
 115         struct pvt *pvt = (struct pvt *)this->private;
 116
 117         pr_minimize(this);
 118
 119         free_proto(&pvt->proto);
 120
 121         memput(pvt, sizeof *pvt);
 122         memput(this, sizeof *this);
 123 }
 124
 125 /*%
 126  * struct protoent * pr_byname(struct irs_pr *this, const char *name)
 127  *
 128  */
 129
 130 static struct protoent *
 131 pr_byname(struct irs_pr *this, const char *name) {
 132         struct pvt *pvt = (struct pvt *)this->private;
 133         struct protoent *pr = &pvt->proto;
 134         char *body = NULL;
 135         size_t bodylen;
 136         int code;
 137         int i;
 138         char text[256];
 139
 140         if (pr->p_name != NULL && strcmp(name, pr->p_name) == 0) {
 141                 return (pr);
 142         }
 143
 144         if (irs_irp_connection_setup(pvt->girpdata, &pvt->warned) != 0) {
 145                 return (NULL);
 146         }
 147
 148         i = irs_irp_send_command(pvt->girpdata, "getprotobyname %s", name);
 149         if (i != 0)
 150                 return (NULL);
 151
 152         if (irs_irp_get_full_response(pvt->girpdata, &code,
 153                                       text, sizeof text,
 154                                       &body, &bodylen) != 0) {
 155                 return (NULL);
 156         }
 157
 158         if (code == IRPD_GETPROTO_OK) {
 159                 free_proto(pr);
 160                 if (irp_unmarshall_pr(pr, body) != 0) {
 161                         pr = NULL;
 162                 }
 163         } else {
 164                 pr = NULL;
 165         }
 166
 167         if (body != NULL) {
 168                 memput(body, bodylen);
 169         }
 170
 171         return (pr);
 172 }
 173
 174 /*%
 175  * struct protoent * pr_bynumber(struct irs_pr *this, int proto)
 176  *
 177  */
 178
 179 static struct protoent *
 180 pr_bynumber(struct irs_pr *this, int proto) {
 181         struct pvt *pvt = (struct pvt *)this->private;
 182         struct protoent *pr = &pvt->proto;
 183         char *body = NULL;
 184         size_t bodylen;
 185         int code;
 186         int i;
 187         char text[256];
 188
 189         if (pr->p_name != NULL && proto == pr->p_proto) {
 190                 return (pr);
 191         }
 192
 193         if (irs_irp_connection_setup(pvt->girpdata, &pvt->warned) != 0) {
 194                 return (NULL);
 195         }
 196
 197         i = irs_irp_send_command(pvt->girpdata, "getprotobynumber %d", proto);
 198         if (i != 0)
 199                 return (NULL);
 200
 201         if (irs_irp_get_full_response(pvt->girpdata, &code,
 202                                       text, sizeof text,
 203                                       &body, &bodylen) != 0) {
 204                 return (NULL);
 205         }
 206
 207         if (code == IRPD_GETPROTO_OK) {
 208                 free_proto(pr);
 209                 if (irp_unmarshall_pr(pr, body) != 0) {
 210                         pr = NULL;
 211                 }
 212         } else {
 213                 pr = NULL;
 214         }
 215
 216         if (body != NULL) {
 217                 memput(body, bodylen);
 218         }
 219
 220         return (pr);
 221 }
 222
 223 /*%
 224  * void pr_rewind(struct irs_pr *this)
 225  *
 226  */
 227
 228 static void
 229 pr_rewind(struct irs_pr *this) {
 230         struct pvt *pvt = (struct pvt *)this->private;
 231         char text[256];
 232         int code;
 233
 234         if (irs_irp_connection_setup(pvt->girpdata, &pvt->warned) != 0) {
 235                 return;
 236         }
 237
 238         if (irs_irp_send_command(pvt->girpdata, "setprotoent") != 0) {
 239                 return;
 240         }
 241
 242         code = irs_irp_read_response(pvt->girpdata, text, sizeof text);
 243         if (code != IRPD_GETPROTO_SETOK) {
 244                 if (irp_log_errors) {
 245                         syslog(LOG_WARNING, "setprotoent failed: %s", text);
 246                 }
 247         }
 248
 249         return;
 250 }
 251
 252 /*%
 253  *      Prepares the cache if necessary and returns the next item in it.
 254  *
 255  */
 256
 257 static struct protoent *
 258 pr_next(struct irs_pr *this) {
 259         struct pvt *pvt = (struct pvt *)this->private;
 260         struct protoent *pr = &pvt->proto;
 261         char *body;
 262         size_t bodylen;
 263         int code;
 264         char text[256];
 265
 266         if (irs_irp_connection_setup(pvt->girpdata, &pvt->warned) != 0) {
 267                 return (NULL);
 268         }
 269
 270         if (irs_irp_send_command(pvt->girpdata, "getprotoent") != 0) {
 271                 return (NULL);
 272         }
 273
 274         if (irs_irp_get_full_response(pvt->girpdata, &code,
 275                                       text, sizeof text,
 276                                       &body, &bodylen) != 0) {
 277                 return (NULL);
 278         }
 279
 280         if (code == IRPD_GETPROTO_OK) {
 281                 free_proto(pr);
 282                 if (irp_unmarshall_pr(pr, body) != 0) {
 283                         pr = NULL;
 284                 }
 285         } else {
 286                 pr = NULL;
 287         }
 288
 289         if (body != NULL) {
 290                 memput(body, bodylen);
 291         }
 292
 293         return (pr);
 294 }
 295
 296 /*%
 297  * void pr_minimize(struct irs_pr *this)
 298  *
 299  */
 300
 301 static void
 302 pr_minimize(struct irs_pr *this) {
 303         struct pvt *pvt = (struct pvt *)this->private;
 304
 305         irs_irp_disconnect(pvt->girpdata);
 306 }
 307
 308 /*%
 309  *      Deallocate all the memory irp_unmarshall_pr allocated.
 310  *
 311  */
 312
 313 static void
 314 free_proto(struct protoent *pr) {
 315         char **p;
 316
 317         if (pr == NULL)
 318                 return;
 319
 320         if (pr->p_name != NULL)
 321                 free(pr->p_name);
 322
 323         for (p = pr->p_aliases ; p != NULL && *p != NULL ; p++)
 324                 free(*p);
 325 }
 326
 327 /*! \file */