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 1.3 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 #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 * struct irs_sv * irs_irp_sv(struct irs_acc *this) 78 * 79 */ 80 81 struct irs_sv * 82 irs_irp_sv(struct irs_acc *this) { 83 struct irs_sv *sv; 84 struct pvt *pvt; 85 86 if ((sv = memget(sizeof *sv)) == NULL) { 87 errno = ENOMEM; 88 return (NULL); 89 } 90 memset(sv, 0x0, sizeof *sv); 91 92 if ((pvt = memget(sizeof *pvt)) == NULL) { 93 memput(sv, sizeof *sv); 94 errno = ENOMEM; 95 return (NULL); 96 } 97 memset(pvt, 0, sizeof *pvt); 98 pvt->girpdata = this->private; 99 100 sv->private = pvt; 101 sv->close = sv_close; 102 sv->next = sv_next; 103 sv->byname = sv_byname; 104 sv->byport = sv_byport; 105 sv->rewind = sv_rewind; 106 sv->minimize = sv_minimize; 107 108 return (sv); 109 } 110 111 /* Methods */ 112 113 /*% 114 * void sv_close(struct irs_sv *this) 115 * 116 */ 117 118 static void 119 sv_close(struct irs_sv *this) { 120 struct pvt *pvt = (struct pvt *)this->private; 121 122 sv_minimize(this); 123 124 free_service(&pvt->service); 125 126 memput(pvt, sizeof *pvt); 127 memput(this, sizeof *this); 128 } 129 130 /*% 131 * Fills the cache if necessary and returns the next item from it. 132 * 133 */ 134 135 static struct servent * 136 sv_next(struct irs_sv *this) { 137 struct pvt *pvt = (struct pvt *)this->private; 138 struct servent *sv = &pvt->service; 139 char *body; 140 size_t bodylen; 141 int code; 142 char text[256]; 143 144 if (irs_irp_connection_setup(pvt->girpdata, &pvt->warned) != 0) { 145 return (NULL); 146 } 147 148 if (irs_irp_send_command(pvt->girpdata, "getservent") != 0) { 149 return (NULL); 150 } 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_GETSERVICE_OK) { 159 free_service(sv); 160 if (irp_unmarshall_sv(sv, body) != 0) { 161 sv = NULL; 162 } 163 } else { 164 sv = NULL; 165 } 166 167 if (body != NULL) { 168 memput(body, bodylen); 169 } 170 171 return (sv); 172 } 173 174 /*% 175 * struct servent * sv_byname(struct irs_sv *this, const char *name, 176 * const char *proto) 177 * 178 */ 179 180 static struct servent * 181 sv_byname(struct irs_sv *this, const char *name, const char *proto) { 182 struct pvt *pvt = (struct pvt *)this->private; 183 struct servent *sv = &pvt->service; 184 char *body; 185 char text[256]; 186 size_t bodylen; 187 int code; 188 189 if (sv->s_name != NULL && 190 strcmp(name, sv->s_name) == 0 && 191 strcasecmp(proto, sv->s_proto) == 0) { 192 return (sv); 193 } 194 195 if (irs_irp_connection_setup(pvt->girpdata, &pvt->warned) != 0) { 196 return (NULL); 197 } 198 199 if (irs_irp_send_command(pvt->girpdata, "getservbyname %s %s", 200 name, proto) != 0) 201 return (NULL); 202 203 if (irs_irp_get_full_response(pvt->girpdata, &code, 204 text, sizeof text, 205 &body, &bodylen) != 0) { 206 return (NULL); 207 } 208 209 if (code == IRPD_GETSERVICE_OK) { 210 free_service(sv); 211 if (irp_unmarshall_sv(sv, body) != 0) { 212 sv = NULL; 213 } 214 } else { 215 sv = NULL; 216 } 217 218 if (body != NULL) { 219 memput(body, bodylen); 220 } 221 222 return (sv); 223 } 224 225 /*% 226 * struct servent * sv_byport(struct irs_sv *this, int port, 227 * const char *proto) 228 * 229 */ 230 231 static struct servent * 232 sv_byport(struct irs_sv *this, int port, const char *proto) { 233 struct pvt *pvt = (struct pvt *)this->private; 234 struct servent *sv = &pvt->service; 235 char *body; 236 size_t bodylen; 237 char text[256]; 238 int code; 239 240 if (sv->s_name != NULL && 241 port == sv->s_port && 242 strcasecmp(proto, sv->s_proto) == 0) { 243 return (sv); 244 } 245 246 if (irs_irp_connection_setup(pvt->girpdata, &pvt->warned) != 0) { 247 return (NULL); 248 } 249 250 if (irs_irp_send_command(pvt->girpdata, "getservbyport %d %s", 251 ntohs((short)port), proto) != 0) { 252 return (NULL); 253 } 254 255 if (irs_irp_get_full_response(pvt->girpdata, &code, 256 text, sizeof text, 257 &body, &bodylen) != 0) { 258 return (NULL); 259 } 260 261 if (code == IRPD_GETSERVICE_OK) { 262 free_service(sv); 263 if (irp_unmarshall_sv(sv, body) != 0) { 264 sv = NULL; 265 } 266 } else { 267 sv = NULL; 268 } 269 270 if (body != NULL) { 271 memput(body, bodylen); 272 } 273 274 return (sv); 275 } 276 277 /*% 278 * void sv_rewind(struct irs_sv *this) 279 * 280 */ 281 282 static void 283 sv_rewind(struct irs_sv *this) { 284 struct pvt *pvt = (struct pvt *)this->private; 285 char text[256]; 286 int code; 287 288 if (irs_irp_connection_setup(pvt->girpdata, &pvt->warned) != 0) { 289 return; 290 } 291 292 if (irs_irp_send_command(pvt->girpdata, "setservent") != 0) { 293 return; 294 } 295 296 code = irs_irp_read_response(pvt->girpdata, text, sizeof text); 297 if (code != IRPD_GETSERVICE_SETOK) { 298 if (irp_log_errors) { 299 syslog(LOG_WARNING, "setservent failed: %s", text); 300 } 301 } 302 303 return; 304 } 305 306 /*% 307 * void sv_minimize(struct irs_sv *this) 308 * 309 */ 310 311 static void 312 sv_minimize(struct irs_sv *this) { 313 struct pvt *pvt = (struct pvt *)this->private; 314 315 irs_irp_disconnect(pvt->girpdata); 316 } 317 318 319 320 321 322 323 static void 324 free_service(struct servent *sv) { 325 char **p; 326 327 if (sv == NULL) { 328 return; 329 } 330 331 if (sv->s_name != NULL) { 332 free(sv->s_name); 333 } 334 335 for (p = sv->s_aliases ; p != NULL && *p != NULL ; p++) { 336 free(*p); 337 } 338 339 if (sv->s_proto != NULL) { 340 free(sv->s_proto); 341 } 342 } 343 344 345 346 /*! \file */ 347