| File: | src/usr.sbin/npppd/npppd/radius_req.c |
| Warning: | line 429, column 3 Value stored to 'len' is never read |
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| 1 | /* $OpenBSD: radius_req.c,v 1.11 2015/12/05 18:43:36 mmcc Exp $ */ |
| 2 | |
| 3 | /*- |
| 4 | * Copyright (c) 2009 Internet Initiative Japan Inc. |
| 5 | * All rights reserved. |
| 6 | * |
| 7 | * Redistribution and use in source and binary forms, with or without |
| 8 | * modification, are permitted provided that the following conditions |
| 9 | * are met: |
| 10 | * 1. Redistributions of source code must retain the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer. |
| 12 | * 2. Redistributions in binary form must reproduce the above copyright |
| 13 | * notice, this list of conditions and the following disclaimer in the |
| 14 | * documentation and/or other materials provided with the distribution. |
| 15 | * |
| 16 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
| 17 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 18 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 19 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
| 20 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 21 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 22 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 23 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 24 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 25 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 26 | * SUCH DAMAGE. |
| 27 | */ |
| 28 | /**@file |
| 29 | * This file provides functions for RADIUS request using radius(3) and event(3). |
| 30 | * @author Yasuoka Masahiko |
| 31 | * $Id: radius_req.c,v 1.11 2015/12/05 18:43:36 mmcc Exp $ |
| 32 | */ |
| 33 | #include <sys/types.h> |
| 34 | #include <sys/time.h> |
| 35 | #include <sys/socket.h> |
| 36 | #include <netinet/in.h> |
| 37 | #include <unistd.h> |
| 38 | #include <stdio.h> |
| 39 | #include <syslog.h> |
| 40 | #include <stdlib.h> |
| 41 | #include <debugutil.h> |
| 42 | #include <time.h> |
| 43 | #include <event.h> |
| 44 | #include <string.h> |
| 45 | #include <errno(*__errno()).h> |
| 46 | |
| 47 | #include "radius_req.h" |
| 48 | #include <radius.h> |
| 49 | |
| 50 | #ifndef nitems |
| 51 | #define nitems(_a)(sizeof((_a)) / sizeof((_a)[0])) (sizeof((_a)) / sizeof((_a)[0])) |
| 52 | #endif |
| 53 | |
| 54 | struct overlapped { |
| 55 | struct event ev_sock; |
| 56 | int socket; |
| 57 | int ntry; |
| 58 | int max_tries; |
| 59 | int failovers; |
| 60 | int acct_delay_time; |
| 61 | int response_fn_calling; |
| 62 | struct sockaddr_storage ss; |
| 63 | struct timespec req_time; |
| 64 | void *context; |
| 65 | radius_response *response_fn; |
| 66 | char secret[MAX_RADIUS_SECRET128]; |
| 67 | RADIUS_PACKET *pkt; |
| 68 | radius_req_setting *setting; |
| 69 | }; |
| 70 | |
| 71 | static int radius_request0 (struct overlapped *, int); |
| 72 | static int radius_prepare_socket(struct overlapped *); |
| 73 | static void radius_request_io_event (int, short, void *); |
| 74 | static void radius_on_response(RADIUS_REQUEST_CTX, RADIUS_PACKET *, int, int); |
| 75 | static int select_srcaddr(struct sockaddr const *, struct sockaddr *, socklen_t *); |
| 76 | static void radius_req_setting_ref(radius_req_setting *); |
| 77 | static void radius_req_setting_unref(radius_req_setting *); |
| 78 | |
| 79 | #ifdef RADIUS_REQ_DEBUG |
| 80 | #define RADIUS_REQ_DBG(x) log_printf x |
| 81 | #define RADIUS_REQ_ASSERT(cond) \ |
| 82 | if (!(cond)) { \ |
| 83 | fprintf(stderr(&__sF[2]), \ |
| 84 | "\nASSERT(" #cond ") failed on %s() at %s:%d.\n"\ |
| 85 | , __func__, __FILE__"/usr/src/usr.sbin/npppd/npppd/radius_req.c", __LINE__85); \ |
| 86 | abort(); \ |
| 87 | } |
| 88 | #else |
| 89 | #define RADIUS_REQ_ASSERT(cond) |
| 90 | #define RADIUS_REQ_DBG(x) |
| 91 | #endif |
| 92 | |
| 93 | /** |
| 94 | * Send RADIUS request message. The pkt(RADIUS packet) will be released |
| 95 | * by this implementation. |
| 96 | */ |
| 97 | void |
| 98 | radius_request(RADIUS_REQUEST_CTX ctx, RADIUS_PACKET *pkt) |
| 99 | { |
| 100 | uint32_t ival; |
| 101 | struct overlapped *lap; |
| 102 | |
| 103 | RADIUS_REQ_ASSERT(pkt != NULL); |
| 104 | RADIUS_REQ_ASSERT(ctx != NULL); |
| 105 | lap = ctx; |
| 106 | lap->pkt = pkt; |
| 107 | if (radius_get_uint32_attr(pkt, RADIUS_TYPE_ACCT_DELAY_TIME41, &ival) |
| 108 | == 0) |
| 109 | lap->acct_delay_time = 1; |
| 110 | radius_request0(lap, 0); |
| 111 | } |
| 112 | |
| 113 | /** |
| 114 | * Prepare NAS-IP-Address or NAS-IPv6-Address. If |
| 115 | * setting->server[setting->curr_server].sock is not initialized, address |
| 116 | * will be selected automatically. |
| 117 | */ |
| 118 | int |
| 119 | radius_prepare_nas_address(radius_req_setting *setting, |
| 120 | RADIUS_PACKET *pkt) |
| 121 | { |
| 122 | int af; |
| 123 | struct sockaddr_in *sin4; |
| 124 | struct sockaddr_in6 *sin6; |
| 125 | socklen_t socklen; |
| 126 | |
| 127 | /* See RFC 2765, 3162 */ |
| 128 | RADIUS_REQ_ASSERT(setting != NULL); |
| 129 | |
| 130 | af = setting->server[setting->curr_server].peer.sin6.sin6_family; |
| 131 | RADIUS_REQ_ASSERT(af == AF_INET6 || af == AF_INET); |
| 132 | |
| 133 | sin4 = &setting->server[setting->curr_server].sock.sin4; |
| 134 | sin6 = &setting->server[setting->curr_server].sock.sin6; |
| 135 | |
| 136 | switch (af) { |
| 137 | case AF_INET2: |
| 138 | socklen = sizeof(*sin4); |
| 139 | if (sin4->sin_addr.s_addr == INADDR_ANY((u_int32_t)(0x00000000))) { |
| 140 | if (select_srcaddr((struct sockaddr const *) |
| 141 | &setting->server[setting->curr_server].peer, |
| 142 | (struct sockaddr *)sin4, &socklen) != 0) { |
| 143 | RADIUS_REQ_ASSERT("NOTREACHED" == NULL); |
| 144 | goto fail; |
| 145 | } |
| 146 | } |
| 147 | if (radius_put_ipv4_attr(pkt, RADIUS_TYPE_NAS_IP_ADDRESS4, |
| 148 | sin4->sin_addr) != 0) |
| 149 | goto fail; |
| 150 | break; |
| 151 | case AF_INET624: |
| 152 | socklen = sizeof(*sin6); |
| 153 | if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)((*(const u_int32_t *)(const void *)(&(&sin6->sin6_addr )->__u6_addr.__u6_addr8[0]) == 0) && (*(const u_int32_t *)(const void *)(&(&sin6->sin6_addr)->__u6_addr .__u6_addr8[4]) == 0) && (*(const u_int32_t *)(const void *)(&(&sin6->sin6_addr)->__u6_addr.__u6_addr8[8 ]) == 0) && (*(const u_int32_t *)(const void *)(& (&sin6->sin6_addr)->__u6_addr.__u6_addr8[12]) == 0) )) { |
| 154 | if (select_srcaddr((struct sockaddr const *) |
| 155 | &setting->server[setting->curr_server].peer, |
| 156 | (struct sockaddr *)sin4, &socklen) != 0) { |
| 157 | RADIUS_REQ_ASSERT("NOTREACHED" == NULL); |
| 158 | goto fail; |
| 159 | } |
| 160 | } |
| 161 | if (radius_put_raw_attr(pkt, RADIUS_TYPE_NAS_IPV6_ADDRESS95, |
| 162 | sin6->sin6_addr.s6_addr__u6_addr.__u6_addr8, sizeof(sin6->sin6_addr.s6_addr__u6_addr.__u6_addr8)) |
| 163 | != 0) |
| 164 | goto fail; |
| 165 | break; |
| 166 | } |
| 167 | |
| 168 | return 0; |
| 169 | fail: |
| 170 | return 1; |
| 171 | } |
| 172 | |
| 173 | |
| 174 | /** Checks whether the request can fail over to another server */ |
| 175 | int |
| 176 | radius_request_can_failover(RADIUS_REQUEST_CTX ctx) |
| 177 | { |
| 178 | struct overlapped *lap; |
| 179 | radius_req_setting *setting; |
| 180 | |
| 181 | lap = ctx; |
| 182 | setting = lap->setting; |
| 183 | |
| 184 | if (lap->failovers >= setting->max_failovers) |
| 185 | return 0; |
| 186 | if (memcmp(&lap->ss, &setting->server[setting->curr_server].peer, |
| 187 | setting->server[setting->curr_server].peer.sin6.sin6_len) == 0) |
| 188 | /* flagged server doesn't differ from the last server. */ |
| 189 | return 0; |
| 190 | |
| 191 | return 1; |
| 192 | } |
| 193 | |
| 194 | /** Send RADIUS request failing over to another server. */ |
| 195 | int |
| 196 | radius_request_failover(RADIUS_REQUEST_CTX ctx) |
| 197 | { |
| 198 | struct overlapped *lap; |
| 199 | |
| 200 | lap = ctx; |
| 201 | RADIUS_REQ_ASSERT(lap != NULL); |
| 202 | RADIUS_REQ_ASSERT(lap->socket >= 0) |
| 203 | |
| 204 | if (!radius_request_can_failover(lap)) |
| 205 | return -1; |
| 206 | |
| 207 | if (radius_prepare_socket(lap) != 0) |
| 208 | return -1; |
| 209 | |
| 210 | if (radius_request0(lap, 1) != 0) |
| 211 | return -1; |
| 212 | |
| 213 | lap->failovers++; |
| 214 | |
| 215 | return 0; |
| 216 | } |
| 217 | |
| 218 | static int |
| 219 | radius_prepare_socket(struct overlapped *lap) |
| 220 | { |
| 221 | int sock; |
| 222 | radius_req_setting *setting; |
| 223 | struct sockaddr *sa; |
| 224 | |
| 225 | setting = lap->setting; |
| 226 | if (lap->socket >= 0) |
| 227 | close(lap->socket); |
| 228 | lap->socket = -1; |
| 229 | |
| 230 | sa = (struct sockaddr *)&setting->server[setting->curr_server].peer; |
| 231 | |
| 232 | if ((sock = socket(sa->sa_family, SOCK_DGRAM2, IPPROTO_UDP17)) < 0) { |
| 233 | log_printf(LOG_ERR3, "socket() failed in %s: %m", __func__); |
| 234 | return -1; |
| 235 | } |
| 236 | if (connect(sock, sa, sa->sa_len) != 0) { |
| 237 | log_printf(LOG_ERR3, "connect() failed in %s: %m", __func__); |
| 238 | close(sock); |
| 239 | return -1; |
| 240 | } |
| 241 | memcpy(&lap->ss, sa, sa->sa_len); |
| 242 | lap->socket = sock; |
| 243 | memcpy(lap->secret, setting->server[setting->curr_server].secret, |
| 244 | sizeof(lap->secret)); |
| 245 | lap->ntry = lap->max_tries; |
| 246 | |
| 247 | return 0; |
| 248 | } |
| 249 | |
| 250 | /** |
| 251 | * Prepare sending RADIUS request. This implementation will call back to |
| 252 | * notice that it receives the response or it fails for timeouts to the |
| 253 | * The context that is set as 'pctx' and response packet that is given |
| 254 | * by the callback function will be released by this implementation internally. |
| 255 | * @param setting Setting for RADIUS server or request. |
| 256 | * @param context Context for the caller. |
| 257 | * @param pctx Pointer to the space for context of RADIUS request |
| 258 | * (RADIUS_REQUEST_CTX). This will be used for canceling. |
| 259 | * NULL can be specified when you don't need. |
| 260 | * @param response_fn Specify callback function as a pointer. The function |
| 261 | * will be called when it receives a response or when |
| 262 | * request fails for timeouts. |
| 263 | * @param timeout response timeout in second. |
| 264 | */ |
| 265 | int |
| 266 | radius_prepare(radius_req_setting *setting, void *context, |
| 267 | RADIUS_REQUEST_CTX *pctx, radius_response response_fn) |
| 268 | { |
| 269 | struct overlapped *lap; |
| 270 | |
| 271 | RADIUS_REQ_ASSERT(setting != NULL); |
| 272 | lap = NULL((void *)0); |
| 273 | |
| 274 | if (setting->server[setting->curr_server].enabled == 0) |
| 275 | return 1; |
| 276 | if ((lap = calloc(1, sizeof(struct overlapped))) == NULL((void *)0)) { |
| 277 | log_printf(LOG_ERR3, "calloc() failed in %s: %m", __func__); |
| 278 | goto fail; |
| 279 | } |
| 280 | lap->context = context; |
| 281 | lap->response_fn = response_fn; |
| 282 | lap->socket = -1; |
| 283 | lap->setting = setting; |
| 284 | |
| 285 | lap->max_tries = setting->max_tries; |
| 286 | if (lap->max_tries <= 0) |
| 287 | lap->max_tries = 3; /* default max tries */ |
| 288 | |
| 289 | if (radius_prepare_socket(lap) != 0) |
| 290 | goto fail; |
| 291 | |
| 292 | if (pctx != NULL((void *)0)) |
| 293 | *pctx = lap; |
| 294 | |
| 295 | radius_req_setting_ref(setting); |
| 296 | |
| 297 | return 0; |
| 298 | fail: |
| 299 | free(lap); |
| 300 | |
| 301 | return 1; |
| 302 | } |
| 303 | |
| 304 | /** |
| 305 | * Cancel the RADIUS request. |
| 306 | * @param The context received by {@link radius_request()} |
| 307 | */ |
| 308 | void |
| 309 | radius_cancel_request(RADIUS_REQUEST_CTX ctx) |
| 310 | { |
| 311 | struct overlapped *lap = ctx; |
| 312 | |
| 313 | /* |
| 314 | * Don't call this function from the callback function. |
| 315 | * The context will be freed after the callback function is called. |
| 316 | */ |
| 317 | RADIUS_REQ_ASSERT(lap->response_fn_calling == 0); |
| 318 | if (lap->response_fn_calling != 0) |
| 319 | return; |
| 320 | |
| 321 | if (lap->socket >= 0) { |
| 322 | event_del(&lap->ev_sock); |
| 323 | close(lap->socket); |
| 324 | lap->socket = -1; |
| 325 | } |
| 326 | if (lap->pkt != NULL((void *)0)) { |
| 327 | radius_delete_packet(lap->pkt); |
| 328 | lap->pkt = NULL((void *)0); |
| 329 | } |
| 330 | radius_req_setting_unref(lap->setting); |
| 331 | |
| 332 | memset(lap->secret, 0x41, sizeof(lap->secret)); |
| 333 | |
| 334 | free(lap); |
| 335 | } |
| 336 | |
| 337 | /** Return the shared secret for RADIUS server that is used by this context. */ |
| 338 | const char * |
| 339 | radius_get_server_secret(RADIUS_REQUEST_CTX ctx) |
| 340 | { |
| 341 | struct overlapped *lap; |
| 342 | |
| 343 | lap = ctx; |
| 344 | RADIUS_REQ_ASSERT(lap != NULL); |
| 345 | |
| 346 | return lap->secret; |
| 347 | } |
| 348 | |
| 349 | /** Return the address of RADIUS server that is used by this context. */ |
| 350 | struct sockaddr * |
| 351 | radius_get_server_address(RADIUS_REQUEST_CTX ctx) |
| 352 | { |
| 353 | struct overlapped *lap; |
| 354 | |
| 355 | lap = ctx; |
| 356 | RADIUS_REQ_ASSERT(lap != NULL); |
| 357 | |
| 358 | return (struct sockaddr *)&lap->ss; |
| 359 | } |
| 360 | |
| 361 | static int |
| 362 | radius_request0(struct overlapped *lap, int new_message) |
| 363 | { |
| 364 | struct timeval tv0; |
| 365 | |
| 366 | RADIUS_REQ_ASSERT(lap->ntry > 0); |
| 367 | |
| 368 | if (lap->acct_delay_time != 0) { |
| 369 | struct timespec curr, delta; |
| 370 | |
| 371 | if (clock_gettime(CLOCK_MONOTONIC3, &curr) != 0) { |
| 372 | log_printf(LOG_CRIT2, |
| 373 | "clock_gettime(CLOCK_MONOTONIC,) failed: %m"); |
| 374 | RADIUS_REQ_ASSERT(0); |
| 375 | } |
| 376 | if (!timespecisset(&lap->req_time)((&lap->req_time)->tv_sec || (&lap->req_time )->tv_nsec)) |
| 377 | lap->req_time = curr; |
| 378 | else { |
| 379 | timespecsub(&curr, &lap->req_time, &delta)do { (&delta)->tv_sec = (&curr)->tv_sec - (& lap->req_time)->tv_sec; (&delta)->tv_nsec = (& curr)->tv_nsec - (&lap->req_time)->tv_nsec; if ( (&delta)->tv_nsec < 0) { (&delta)->tv_sec--; (&delta)->tv_nsec += 1000000000L; } } while (0); |
| 380 | if (radius_set_uint32_attr(lap->pkt, |
| 381 | RADIUS_TYPE_ACCT_DELAY_TIME41, delta.tv_sec) == 0) { |
| 382 | radius_update_id(lap->pkt); |
| 383 | new_message = 1; |
| 384 | } |
| 385 | } |
| 386 | } |
| 387 | if (new_message) { |
| 388 | radius_set_accounting_request_authenticator(lap->pkt, |
| 389 | radius_get_server_secret(lap)); |
| 390 | } |
| 391 | |
| 392 | lap->ntry--; |
| 393 | if (radius_send(lap->socket, lap->pkt, 0) != 0) { |
| 394 | log_printf(LOG_ERR3, "sendto() failed in %s: %m", |
| 395 | __func__); |
| 396 | radius_on_response(lap, NULL((void *)0), RADIUS_REQUEST_ERROR0x0001, 1); |
| 397 | return 1; |
| 398 | } |
| 399 | tv0.tv_usec = 0; |
| 400 | tv0.tv_sec = lap->setting->timeout; |
| 401 | |
| 402 | event_set(&lap->ev_sock, lap->socket, EV_READ0x02 | EV_PERSIST0x10, |
| 403 | radius_request_io_event, lap); |
| 404 | event_add(&lap->ev_sock, &tv0); |
| 405 | |
| 406 | return 0; |
| 407 | } |
| 408 | |
| 409 | static void |
| 410 | radius_request_io_event(int fd, short evmask, void *context) |
| 411 | { |
| 412 | struct overlapped *lap; |
| 413 | struct sockaddr_storage ss; |
| 414 | int flags; |
| 415 | socklen_t len; |
| 416 | RADIUS_PACKET *respkt; |
| 417 | |
| 418 | RADIUS_REQ_ASSERT(context != NULL); |
| 419 | |
| 420 | lap = context; |
| 421 | respkt = NULL((void *)0); |
| 422 | flags = 0; |
| 423 | if ((evmask & EV_READ0x02) != 0) { |
| 424 | RADIUS_REQ_ASSERT(lap->socket >= 0); |
| 425 | if (lap->socket < 0) |
| 426 | return; |
| 427 | RADIUS_REQ_ASSERT(lap->pkt != NULL); |
| 428 | memset(&ss, 0, sizeof(ss)); |
| 429 | len = sizeof(ss); |
Value stored to 'len' is never read | |
| 430 | if ((respkt = radius_recv(lap->socket, 0)) == NULL((void *)0)) { |
| 431 | RADIUS_REQ_DBG((LOG_DEBUG, |
| 432 | "radius_recv() on %s(): %m", __func__)); |
| 433 | /* |
| 434 | * Ignore error by icmp. Wait a response from the |
| 435 | * server anyway, it may eventually become ready. |
| 436 | */ |
| 437 | switch (errno(*__errno())) { |
| 438 | case EHOSTDOWN64: case EHOSTUNREACH65: case ECONNREFUSED61: |
| 439 | return; /* sleep the rest of timeout time */ |
| 440 | } |
| 441 | flags |= RADIUS_REQUEST_ERROR0x0001; |
| 442 | } else if (lap->secret[0] == '\0') { |
| 443 | flags |= RADIUS_REQUEST_CHECK_AUTHENTICATOR_NO_CHECK0x0020; |
| 444 | } else { |
| 445 | radius_set_request_packet(respkt, lap->pkt); |
| 446 | if (!radius_check_response_authenticator(respkt, |
| 447 | lap->secret)) |
| 448 | flags |= RADIUS_REQUEST_CHECK_AUTHENTICATOR_OK0x0010; |
| 449 | } |
| 450 | radius_on_response(lap, respkt, flags, 0); |
| 451 | radius_delete_packet(respkt); |
| 452 | } else if ((evmask & EV_TIMEOUT0x01) != 0) { |
| 453 | if (lap->ntry > 0) { |
| 454 | RADIUS_REQ_DBG((LOG_DEBUG, |
| 455 | "%s() timed out retry", __func__)); |
| 456 | radius_request0(lap, 0); |
| 457 | return; |
| 458 | } |
| 459 | RADIUS_REQ_DBG((LOG_DEBUG, "%s() timed out", __func__)); |
| 460 | flags |= RADIUS_REQUEST_TIMEOUT0x0002; |
| 461 | radius_on_response(lap, NULL((void *)0), flags, 1); |
| 462 | } |
| 463 | } |
| 464 | |
| 465 | static void |
| 466 | radius_on_response(RADIUS_REQUEST_CTX ctx, RADIUS_PACKET *pkt, int flags, |
| 467 | int server_failure) |
| 468 | { |
| 469 | struct overlapped *lap; |
| 470 | int failovers; |
| 471 | |
| 472 | lap = ctx; |
| 473 | if (server_failure) { |
| 474 | int i, n; |
| 475 | struct sockaddr *sa_curr; |
| 476 | |
| 477 | sa_curr = (struct sockaddr *)&lap->setting->server[ |
| 478 | lap->setting->curr_server].peer; |
| 479 | if (sa_curr->sa_len == lap->ss.ss_len && |
| 480 | memcmp(sa_curr, &lap->ss, sa_curr->sa_len) == 0) { |
| 481 | /* |
| 482 | * The server on failure is flagged as the current. |
| 483 | * change the current |
| 484 | */ |
| 485 | for (i = 1; i < nitems(lap->setting->server)(sizeof((lap->setting->server)) / sizeof((lap->setting ->server)[0])); i++) { |
| 486 | n = (lap->setting->curr_server + i) % |
| 487 | nitems(lap->setting->server)(sizeof((lap->setting->server)) / sizeof((lap->setting ->server)[0])); |
| 488 | if (lap->setting->server[n].enabled) { |
| 489 | lap->setting->curr_server = n; |
| 490 | break; |
| 491 | } |
| 492 | } |
| 493 | } |
| 494 | } |
| 495 | |
| 496 | failovers = lap->failovers; |
| 497 | if (lap->response_fn != NULL((void *)0)) { |
| 498 | lap->response_fn_calling++; |
| 499 | lap->response_fn(lap->context, pkt, flags, ctx); |
| 500 | lap->response_fn_calling--; |
| 501 | } |
| 502 | if (failovers == lap->failovers) |
| 503 | radius_cancel_request(lap); |
| 504 | } |
| 505 | |
| 506 | static int |
| 507 | select_srcaddr(struct sockaddr const *dst, struct sockaddr *src, |
| 508 | socklen_t *srclen) |
| 509 | { |
| 510 | int sock; |
| 511 | |
| 512 | sock = -1; |
| 513 | if ((sock = socket(dst->sa_family, SOCK_DGRAM2, IPPROTO_UDP17)) < 0) |
| 514 | goto fail; |
| 515 | if (connect(sock, dst, dst->sa_len) != 0) |
| 516 | goto fail; |
| 517 | if (getsockname(sock, src, srclen) != 0) |
| 518 | goto fail; |
| 519 | |
| 520 | close(sock); |
| 521 | |
| 522 | return 0; |
| 523 | fail: |
| 524 | if (sock >= 0) |
| 525 | close(sock); |
| 526 | |
| 527 | return 1; |
| 528 | } |
| 529 | |
| 530 | radius_req_setting * |
| 531 | radius_req_setting_create(void) |
| 532 | { |
| 533 | return calloc(1, sizeof(radius_req_setting)); |
| 534 | } |
| 535 | |
| 536 | int |
| 537 | radius_req_setting_has_server(radius_req_setting *setting) |
| 538 | { |
| 539 | return setting->server[setting->curr_server].enabled; |
| 540 | } |
| 541 | |
| 542 | void |
| 543 | radius_req_setting_destroy(radius_req_setting *setting) |
| 544 | { |
| 545 | setting->destroyed = 1; |
| 546 | |
| 547 | if (setting->refcnt == 0) |
| 548 | free(setting); |
| 549 | } |
| 550 | |
| 551 | static void |
| 552 | radius_req_setting_ref(radius_req_setting *setting) |
| 553 | { |
| 554 | setting->refcnt++; |
| 555 | } |
| 556 | |
| 557 | static void |
| 558 | radius_req_setting_unref(radius_req_setting *setting) |
| 559 | { |
| 560 | setting->refcnt--; |
| 561 | if (setting->destroyed) |
| 562 | radius_req_setting_destroy(setting); |
| 563 | } |