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

   1 /*
   2  * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
   3  * Portions 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(LIBC_SCCS) && !defined(lint)
  19 static const char rcsid[] = "$Id: irp_sv.c,v 1.1.2.1 2004/03/09 09:17:32 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 #include <sys/socket.h>
  29
  30 #ifdef IRS_LCL_SV_DB
  31 #include <db.h>
  32 #endif
  33 #include <errno.h>
  34 #include <fcntl.h>
  35 #include <limits.h>
  36 #include <stdio.h>
  37 #include <string.h>
  38 #include <stdlib.h>
  39 #include <syslog.h>
  40
  41 #include <irs.h>
  42 #include <irp.h>
  43 #include <isc/irpmarshall.h>
  44 #include <isc/memcluster.h>
  45
  46 #include "irs_p.h"
  47 #include "lcl_p.h"
  48 #include "irp_p.h"
  49
  50 #include "port_after.h"
  51
  52 /* Types */
  53
  54 struct pvt {
  55         struct irp_p           *girpdata;
  56         int                     warned;
  57         struct servent          service;
  58 };
  59
  60 /* Forward */
  61
  62 static void                     sv_close(struct irs_sv*);
  63 static struct servent *         sv_next(struct irs_sv *);
  64 static struct servent *         sv_byname(struct irs_sv *, const char *,
  65                                           const char *);
  66 static struct servent *         sv_byport(struct irs_sv *, int, const char *);
  67 static void                     sv_rewind(struct irs_sv *);
  68 static void                     sv_minimize(struct irs_sv *);
  69
  70 static void                     free_service(struct servent *sv);
  71
  72
  73
  74 /* Public */
  75
  76
  77
  78 /*
  79  * struct irs_sv * irs_irp_sv(struct irs_acc *this)
  80  *
  81  */
  82
  83 struct irs_sv *
  84 irs_irp_sv(struct irs_acc *this) {
  85         struct irs_sv *sv;
  86         struct pvt *pvt;
  87
  88         if ((sv = memget(sizeof *sv)) == NULL) {
  89                 errno = ENOMEM;
  90                 return (NULL);
  91         }
  92         memset(sv, 0x0, sizeof *sv);
  93
  94         if ((pvt = memget(sizeof *pvt)) == NULL) {
  95                 memput(sv, sizeof *sv);
  96                 errno = ENOMEM;
  97                 return (NULL);
  98         }
  99         memset(pvt, 0, sizeof *pvt);
 100         pvt->girpdata = this->private;
 101
 102         sv->private = pvt;
 103         sv->close = sv_close;
 104         sv->next = sv_next;
 105         sv->byname = sv_byname;
 106         sv->byport = sv_byport;
 107         sv->rewind = sv_rewind;
 108         sv->minimize = sv_minimize;
 109
 110         return (sv);
 111 }
 112
 113 /* Methods */
 114
 115
 116
 117 /*
 118  * void sv_close(struct irs_sv *this)
 119  *
 120  */
 121
 122 static void
 123 sv_close(struct irs_sv *this) {
 124         struct pvt *pvt = (struct pvt *)this->private;
 125
 126         sv_minimize(this);
 127
 128         free_service(&pvt->service);
 129
 130         memput(pvt, sizeof *pvt);
 131         memput(this, sizeof *this);
 132 }
 133
 134
 135
 136
 137 /*
 138  * struct servent * sv_next(struct irs_sv *this)
 139  *
 140  * Notes:
 141  *
 142  *      Fills the cache if necessary and returns the next item from it.
 143  *
 144  */
 145
 146 static struct servent *
 147 sv_next(struct irs_sv *this) {
 148         struct pvt *pvt = (struct pvt *)this->private;
 149         struct servent *sv = &pvt->service;
 150         char *body;
 151         size_t bodylen;
 152         int code;
 153         char text[256];
 154
 155         if (irs_irp_connection_setup(pvt->girpdata, &pvt->warned) != 0) {
 156                 return (NULL);
 157         }
 158
 159         if (irs_irp_send_command(pvt->girpdata, "getservent") != 0) {
 160                 return (NULL);
 161         }
 162
 163         if (irs_irp_get_full_response(pvt->girpdata, &code,
 164                                       text, sizeof text,
 165                                       &body, &bodylen) != 0) {
 166                 return (NULL);
 167         }
 168
 169         if (code == IRPD_GETSERVICE_OK) {
 170                 free_service(sv);
 171                 if (irp_unmarshall_sv(sv, body) != 0) {
 172                         sv = NULL;
 173                 }
 174         } else {
 175                 sv = NULL;
 176         }
 177
 178         if (body != NULL) {
 179                 memput(body, bodylen);
 180         }
 181
 182         return (sv);
 183 }
 184
 185
 186
 187
 188 /*
 189  * struct servent * sv_byname(struct irs_sv *this, const char *name,
 190  *                              const char *proto)
 191  *
 192  */
 193
 194 static struct servent *
 195 sv_byname(struct irs_sv *this, const char *name, const char *proto) {
 196         struct pvt *pvt = (struct pvt *)this->private;
 197         struct servent *sv = &pvt->service;
 198         char *body;
 199         char text[256];
 200         size_t bodylen;
 201         int code;
 202
 203         if (sv->s_name != NULL &&
 204             strcmp(name, sv->s_name) == 0 &&
 205             strcasecmp(proto, sv->s_proto) == 0) {
 206                 return (sv);
 207         }
 208
 209         if (irs_irp_connection_setup(pvt->girpdata, &pvt->warned) != 0) {
 210                 return (NULL);
 211         }
 212
 213         if (irs_irp_send_command(pvt->girpdata, "getservbyname %s %s",
 214                                  name, proto) != 0)
 215                 return (NULL);
 216
 217         if (irs_irp_get_full_response(pvt->girpdata, &code,
 218                                       text, sizeof text,
 219                                       &body, &bodylen) != 0) {
 220                 return (NULL);
 221         }
 222
 223         if (code == IRPD_GETSERVICE_OK) {
 224                 free_service(sv);
 225                 if (irp_unmarshall_sv(sv, body) != 0) {
 226                         sv = NULL;
 227                 }
 228         } else {
 229                 sv = NULL;
 230         }
 231
 232         if (body != NULL) {
 233                 memput(body, bodylen);
 234         }
 235
 236         return (sv);
 237 }
 238
 239
 240
 241
 242 /*
 243  * struct servent * sv_byport(struct irs_sv *this, int port,
 244  *                              const char *proto)
 245  *
 246  */
 247
 248 static struct servent *
 249 sv_byport(struct irs_sv *this, int port, const char *proto) {
 250         struct pvt *pvt = (struct pvt *)this->private;
 251         struct servent *sv = &pvt->service;
 252         char *body;
 253         size_t bodylen;
 254         char text[256];
 255         int code;
 256
 257         if (sv->s_name != NULL &&
 258             port == sv->s_port &&
 259             strcasecmp(proto, sv->s_proto) == 0) {
 260                 return (sv);
 261         }
 262
 263         if (irs_irp_connection_setup(pvt->girpdata, &pvt->warned) != 0) {
 264                 return (NULL);
 265         }
 266
 267         if (irs_irp_send_command(pvt->girpdata, "getservbyport %d %s",
 268                                  ntohs((short)port), proto) != 0) {
 269                 return (NULL);
 270         }
 271
 272         if (irs_irp_get_full_response(pvt->girpdata, &code,
 273                                       text, sizeof text,
 274                                       &body, &bodylen) != 0) {
 275                 return (NULL);
 276         }
 277
 278         if (code == IRPD_GETSERVICE_OK) {
 279                 free_service(sv);
 280                 if (irp_unmarshall_sv(sv, body) != 0) {
 281                         sv = NULL;
 282                 }
 283         } else {
 284                 sv = NULL;
 285         }
 286
 287         if (body != NULL) {
 288                 memput(body, bodylen);
 289         }
 290
 291         return (sv);
 292 }
 293
 294
 295
 296
 297
 298 /*
 299  * void sv_rewind(struct irs_sv *this)
 300  *
 301  */
 302
 303 static void
 304 sv_rewind(struct irs_sv *this) {
 305         struct pvt *pvt = (struct pvt *)this->private;
 306         char text[256];
 307         int code;
 308
 309         if (irs_irp_connection_setup(pvt->girpdata, &pvt->warned) != 0) {
 310                 return;
 311         }
 312
 313         if (irs_irp_send_command(pvt->girpdata, "setservent") != 0) {
 314                 return;
 315         }
 316
 317         code = irs_irp_read_response(pvt->girpdata, text, sizeof text);
 318         if (code != IRPD_GETSERVICE_SETOK) {
 319                 if (irp_log_errors) {
 320                         syslog(LOG_WARNING, "setservent failed: %s", text);
 321                 }
 322         }
 323
 324         return;
 325 }
 326
 327
 328
 329
 330
 331 /*
 332  * void sv_minimize(struct irs_sv *this)
 333  *
 334  */
 335
 336 static void
 337 sv_minimize(struct irs_sv *this) {
 338         struct pvt *pvt = (struct pvt *)this->private;
 339
 340         irs_irp_disconnect(pvt->girpdata);
 341 }
 342
 343
 344
 345
 346
 347
 348 static void
 349 free_service(struct servent *sv) {
 350         char **p;
 351
 352         if (sv == NULL) {
 353                 return;
 354         }
 355
 356         if (sv->s_name != NULL) {
 357                 free(sv->s_name);
 358         }
 359
 360         for (p = sv->s_aliases ; p != NULL && *p != NULL ; p++) {
 361                 free(*p);
 362         }
 363
 364         if (sv->s_proto != NULL) {
 365                 free(sv->s_proto);
 366         }
 367 }
 368
 369