| File: | src/usr.sbin/radiusd/radiusd/../radiusd.c |
| Warning: | line 606, column 7 Although the value stored to 'sz' is used in the enclosing expression, the value is never actually read from 'sz' |
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| 1 | /* $OpenBSD: radiusd.c,v 1.34 2024/01/08 04:16:48 yasuoka Exp $ */ |
| 2 | |
| 3 | /* |
| 4 | * Copyright (c) 2013, 2023 Internet Initiative Japan Inc. |
| 5 | * |
| 6 | * Permission to use, copy, modify, and distribute this software for any |
| 7 | * purpose with or without fee is hereby granted, provided that the above |
| 8 | * copyright notice and this permission notice appear in all copies. |
| 9 | * |
| 10 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| 11 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| 12 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
| 13 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| 14 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| 15 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
| 16 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| 17 | */ |
| 18 | |
| 19 | #include <sys/types.h> |
| 20 | #include <netinet/in.h> |
| 21 | #include <arpa/inet.h> |
| 22 | #include <sys/queue.h> |
| 23 | #include <sys/socket.h> |
| 24 | #include <sys/time.h> |
| 25 | #include <sys/uio.h> |
| 26 | #include <sys/wait.h> |
| 27 | |
| 28 | #include <err.h> |
| 29 | #include <errno(*__errno()).h> |
| 30 | #include <event.h> |
| 31 | #include <fcntl.h> |
| 32 | #include <fnmatch.h> |
| 33 | #include <imsg.h> |
| 34 | #include <md5.h> |
| 35 | #include <netdb.h> |
| 36 | #include <pwd.h> |
| 37 | #include <signal.h> |
| 38 | #include <stdbool.h> |
| 39 | #include <stdio.h> |
| 40 | #include <stdlib.h> |
| 41 | #include <string.h> |
| 42 | #include <syslog.h> |
| 43 | #include <unistd.h> |
| 44 | |
| 45 | #include <radius.h> |
| 46 | |
| 47 | #include "radiusd.h" |
| 48 | #include "radiusd_local.h" |
| 49 | #include "log.h" |
| 50 | #include "util.h" |
| 51 | #include "imsg_subr.h" |
| 52 | |
| 53 | static int radiusd_start(struct radiusd *); |
| 54 | static void radiusd_stop(struct radiusd *); |
| 55 | static void radiusd_free(struct radiusd *); |
| 56 | static void radiusd_listen_on_event(int, short, void *); |
| 57 | static void radiusd_on_sigterm(int, short, void *); |
| 58 | static void radiusd_on_sigint(int, short, void *); |
| 59 | static void radiusd_on_sighup(int, short, void *); |
| 60 | static void radiusd_on_sigchld(int, short, void *); |
| 61 | static void radius_query_request(struct radius_query *); |
| 62 | static void radius_query_response(struct radius_query *); |
| 63 | static const char *radius_code_string(int); |
| 64 | static int radiusd_access_response_fixup (struct radius_query *); |
| 65 | |
| 66 | |
| 67 | |
| 68 | static void radiusd_module_reset_ev_handler( |
| 69 | struct radiusd_module *); |
| 70 | static int radiusd_module_imsg_read(struct radiusd_module *, |
| 71 | bool_Bool); |
| 72 | static void radiusd_module_imsg(struct radiusd_module *, |
| 73 | struct imsg *); |
| 74 | |
| 75 | static struct radiusd_module_radpkt_arg * |
| 76 | radiusd_module_recv_radpkt(struct radiusd_module *, |
| 77 | struct imsg *, uint32_t, const char *); |
| 78 | static void radiusd_module_on_imsg_io(int, short, void *); |
| 79 | void radiusd_module_start(struct radiusd_module *); |
| 80 | void radiusd_module_stop(struct radiusd_module *); |
| 81 | static void radiusd_module_close(struct radiusd_module *); |
| 82 | static void radiusd_module_userpass(struct radiusd_module *, |
| 83 | struct radius_query *); |
| 84 | static void radiusd_module_access_request(struct radiusd_module *, |
| 85 | struct radius_query *); |
| 86 | static void radiusd_module_request_decoration( |
| 87 | struct radiusd_module *, struct radius_query *); |
| 88 | static void radiusd_module_response_decoration( |
| 89 | struct radiusd_module *, struct radius_query *); |
| 90 | static int imsg_compose_radius_packet(struct imsgbuf *, |
| 91 | uint32_t, u_int, RADIUS_PACKET *); |
| 92 | |
| 93 | static u_int radius_query_id_seq = 0; |
| 94 | int debug = 0; |
| 95 | |
| 96 | static __dead__attribute__((__noreturn__)) void |
| 97 | usage(void) |
| 98 | { |
| 99 | extern char *__progname; |
| 100 | |
| 101 | fprintf(stderr(&__sF[2]), "usage: %s [-dn] [-f file]\n", __progname); |
| 102 | exit(EXIT_FAILURE1); |
| 103 | } |
| 104 | |
| 105 | int |
| 106 | main(int argc, char *argv[]) |
| 107 | { |
| 108 | extern char *__progname; |
| 109 | const char *conffile = CONFFILE"/etc/radiusd.conf"; |
| 110 | int ch; |
| 111 | struct radiusd *radiusd; |
| 112 | bool_Bool noaction = false0; |
| 113 | struct passwd *pw; |
| 114 | |
| 115 | while ((ch = getopt(argc, argv, "df:n")) != -1) |
| 116 | switch (ch) { |
| 117 | case 'd': |
| 118 | debug++; |
| 119 | break; |
| 120 | |
| 121 | case 'f': |
| 122 | conffile = optarg; |
| 123 | break; |
| 124 | |
| 125 | case 'n': |
| 126 | noaction = true1; |
| 127 | break; |
| 128 | |
| 129 | default: |
| 130 | usage(); |
| 131 | /* NOTREACHED */ |
| 132 | } |
| 133 | |
| 134 | argc -= optind; |
| 135 | argv += optind; |
| 136 | |
| 137 | if (argc != 0) |
| 138 | usage(); |
| 139 | |
| 140 | if ((radiusd = calloc(1, sizeof(*radiusd))) == NULL((void *)0)) |
| 141 | err(1, "calloc"); |
| 142 | TAILQ_INIT(&radiusd->listen)do { (&radiusd->listen)->tqh_first = ((void *)0); ( &radiusd->listen)->tqh_last = &(&radiusd-> listen)->tqh_first; } while (0); |
| 143 | TAILQ_INIT(&radiusd->query)do { (&radiusd->query)->tqh_first = ((void *)0); (& radiusd->query)->tqh_last = &(&radiusd->query )->tqh_first; } while (0); |
| 144 | |
| 145 | log_init(debug); |
| 146 | if (parse_config(conffile, radiusd) != 0) |
| 147 | errx(EXIT_FAILURE1, "config error"); |
| 148 | if (noaction) { |
| 149 | fprintf(stderr(&__sF[2]), "configuration OK\n"); |
| 150 | exit(EXIT_SUCCESS0); |
| 151 | } |
| 152 | |
| 153 | if (debug == 0) |
| 154 | daemon(0, 0); |
| 155 | event_init(); |
| 156 | |
| 157 | if ((pw = getpwnam(RADIUSD_USER"_radiusd")) == NULL((void *)0)) |
| 158 | errx(EXIT_FAILURE1, "user `%s' is not found in password " |
| 159 | "database", RADIUSD_USER"_radiusd"); |
| 160 | |
| 161 | if (chroot(pw->pw_dir) == -1) |
| 162 | err(EXIT_FAILURE1, "chroot"); |
| 163 | if (chdir("/") == -1) |
| 164 | err(EXIT_FAILURE1, "chdir(\"/\")"); |
| 165 | |
| 166 | if (setgroups(1, &pw->pw_gid) || |
| 167 | setresgid(pw->pw_gid, pw->pw_gid, pw->pw_gid) || |
| 168 | setresuid(pw->pw_uid, pw->pw_uid, pw->pw_uid)) |
| 169 | err(EXIT_FAILURE1, "cannot drop privileges"); |
| 170 | |
| 171 | signal(SIGPIPE13, SIG_IGN(void (*)(int))1); |
| 172 | openlog(NULL((void *)0), LOG_PID0x01, LOG_DAEMON(3<<3)); |
| 173 | |
| 174 | signal_set(&radiusd->ev_sigterm, SIGTERM, radiusd_on_sigterm, radiusd)event_set(&radiusd->ev_sigterm, 15, 0x08|0x10, radiusd_on_sigterm , radiusd); |
| 175 | signal_set(&radiusd->ev_sigint, SIGINT, radiusd_on_sigint, radiusd)event_set(&radiusd->ev_sigint, 2, 0x08|0x10, radiusd_on_sigint , radiusd); |
| 176 | signal_set(&radiusd->ev_sighup, SIGHUP, radiusd_on_sighup, radiusd)event_set(&radiusd->ev_sighup, 1, 0x08|0x10, radiusd_on_sighup , radiusd); |
| 177 | signal_set(&radiusd->ev_sigchld, SIGCHLD, radiusd_on_sigchld, radiusd)event_set(&radiusd->ev_sigchld, 20, 0x08|0x10, radiusd_on_sigchld , radiusd); |
| 178 | |
| 179 | if (radiusd_start(radiusd) != 0) |
| 180 | errx(EXIT_FAILURE1, "start failed"); |
| 181 | |
| 182 | if (pledge("stdio inet", NULL((void *)0)) == -1) |
| 183 | err(EXIT_FAILURE1, "pledge"); |
| 184 | |
| 185 | if (event_loop(0) < 0) |
| 186 | radiusd_stop(radiusd); |
| 187 | |
| 188 | radiusd_free(radiusd); |
| 189 | event_base_free(NULL((void *)0)); |
| 190 | |
| 191 | exit(EXIT_SUCCESS0); |
| 192 | } |
| 193 | |
| 194 | static int |
| 195 | radiusd_start(struct radiusd *radiusd) |
| 196 | { |
| 197 | struct radiusd_listen *l; |
| 198 | struct radiusd_module *module; |
| 199 | int s; |
| 200 | char hbuf[NI_MAXHOST256]; |
| 201 | |
| 202 | TAILQ_FOREACH(l, &radiusd->listen, next)for((l) = ((&radiusd->listen)->tqh_first); (l) != ( (void *)0); (l) = ((l)->next.tqe_next)) { |
| 203 | if (getnameinfo( |
| 204 | (struct sockaddr *)&l->addr, l->addr.ipv4.sin_len, |
| 205 | hbuf, sizeof(hbuf), NULL((void *)0), 0, NI_NUMERICHOST1) != 0) { |
| 206 | log_warn("%s: getnameinfo()", __func__); |
| 207 | goto on_error; |
| 208 | } |
| 209 | if ((s = socket(l->addr.ipv4.sin_family, |
| 210 | l->stype | SOCK_NONBLOCK0x4000, l->sproto)) == -1) { |
| 211 | log_warn("Listen %s port %d is failed: socket()", |
| 212 | hbuf, (int)htons(l->addr.ipv4.sin_port)(__uint16_t)(__builtin_constant_p(l->addr.ipv4.sin_port) ? (__uint16_t)(((__uint16_t)(l->addr.ipv4.sin_port) & 0xffU ) << 8 | ((__uint16_t)(l->addr.ipv4.sin_port) & 0xff00U ) >> 8) : __swap16md(l->addr.ipv4.sin_port))); |
| 213 | goto on_error; |
| 214 | } |
| 215 | if (bind(s, (struct sockaddr *)&l->addr, l->addr.ipv4.sin_len) |
| 216 | != 0) { |
| 217 | log_warn("Listen %s port %d is failed: bind()", |
| 218 | hbuf, (int)htons(l->addr.ipv4.sin_port)(__uint16_t)(__builtin_constant_p(l->addr.ipv4.sin_port) ? (__uint16_t)(((__uint16_t)(l->addr.ipv4.sin_port) & 0xffU ) << 8 | ((__uint16_t)(l->addr.ipv4.sin_port) & 0xff00U ) >> 8) : __swap16md(l->addr.ipv4.sin_port))); |
| 219 | close(s); |
| 220 | goto on_error; |
| 221 | } |
| 222 | if (l->addr.ipv4.sin_family == AF_INET2) |
| 223 | log_info("Start listening on %s:%d/udp", hbuf, |
| 224 | (int)ntohs(l->addr.ipv4.sin_port)(__uint16_t)(__builtin_constant_p(l->addr.ipv4.sin_port) ? (__uint16_t)(((__uint16_t)(l->addr.ipv4.sin_port) & 0xffU ) << 8 | ((__uint16_t)(l->addr.ipv4.sin_port) & 0xff00U ) >> 8) : __swap16md(l->addr.ipv4.sin_port))); |
| 225 | else |
| 226 | log_info("Start listening on [%s]:%d/udp", hbuf, |
| 227 | (int)ntohs(l->addr.ipv4.sin_port)(__uint16_t)(__builtin_constant_p(l->addr.ipv4.sin_port) ? (__uint16_t)(((__uint16_t)(l->addr.ipv4.sin_port) & 0xffU ) << 8 | ((__uint16_t)(l->addr.ipv4.sin_port) & 0xff00U ) >> 8) : __swap16md(l->addr.ipv4.sin_port))); |
| 228 | event_set(&l->ev, s, EV_READ0x02 | EV_PERSIST0x10, |
| 229 | radiusd_listen_on_event, l); |
| 230 | if (event_add(&l->ev, NULL((void *)0)) != 0) { |
| 231 | log_warn("event_add() failed at %s()", __func__); |
| 232 | close(s); |
| 233 | goto on_error; |
| 234 | } |
| 235 | l->sock = s; |
| 236 | l->radiusd = radiusd; |
| 237 | } |
| 238 | |
| 239 | signal_add(&radiusd->ev_sigterm, NULL)event_add(&radiusd->ev_sigterm, ((void *)0)); |
| 240 | signal_add(&radiusd->ev_sigint, NULL)event_add(&radiusd->ev_sigint, ((void *)0)); |
| 241 | signal_add(&radiusd->ev_sighup, NULL)event_add(&radiusd->ev_sighup, ((void *)0)); |
| 242 | signal_add(&radiusd->ev_sigchld, NULL)event_add(&radiusd->ev_sigchld, ((void *)0)); |
| 243 | |
| 244 | TAILQ_FOREACH(module, &radiusd->module, next)for((module) = ((&radiusd->module)->tqh_first); (module ) != ((void *)0); (module) = ((module)->next.tqe_next)) { |
| 245 | if (debug > 0) |
| 246 | radiusd_module_set(module, "_debug", 0, NULL((void *)0)); |
| 247 | radiusd_module_start(module); |
| 248 | } |
| 249 | |
| 250 | return (0); |
| 251 | on_error: |
| 252 | radiusd_stop(radiusd); |
| 253 | |
| 254 | return (-1); |
| 255 | } |
| 256 | |
| 257 | static void |
| 258 | radiusd_stop(struct radiusd *radiusd) |
| 259 | { |
| 260 | char hbuf[NI_MAXHOST256]; |
| 261 | struct radiusd_listen *l; |
| 262 | struct radiusd_module *module; |
| 263 | |
| 264 | TAILQ_FOREACH_REVERSE(l, &radiusd->listen, radiusd_listen_head, next)for((l) = (*(((struct radiusd_listen_head *)((&radiusd-> listen)->tqh_last))->tqh_last)); (l) != ((void *)0); (l ) = (*(((struct radiusd_listen_head *)((l)->next.tqe_prev) )->tqh_last))) { |
| 265 | if (l->sock >= 0) { |
| 266 | if (getnameinfo( |
| 267 | (struct sockaddr *)&l->addr, l->addr.ipv4.sin_len, |
| 268 | hbuf, sizeof(hbuf), NULL((void *)0), 0, NI_NUMERICHOST1) != 0) |
| 269 | strlcpy(hbuf, "error", sizeof(hbuf)); |
| 270 | if (l->addr.ipv4.sin_family == AF_INET2) |
| 271 | log_info("Stop listening on %s:%d/udp", hbuf, |
| 272 | (int)ntohs(l->addr.ipv4.sin_port)(__uint16_t)(__builtin_constant_p(l->addr.ipv4.sin_port) ? (__uint16_t)(((__uint16_t)(l->addr.ipv4.sin_port) & 0xffU ) << 8 | ((__uint16_t)(l->addr.ipv4.sin_port) & 0xff00U ) >> 8) : __swap16md(l->addr.ipv4.sin_port))); |
| 273 | else |
| 274 | log_info("Stop listening on [%s]:%d/udp", hbuf, |
| 275 | (int)ntohs(l->addr.ipv4.sin_port)(__uint16_t)(__builtin_constant_p(l->addr.ipv4.sin_port) ? (__uint16_t)(((__uint16_t)(l->addr.ipv4.sin_port) & 0xffU ) << 8 | ((__uint16_t)(l->addr.ipv4.sin_port) & 0xff00U ) >> 8) : __swap16md(l->addr.ipv4.sin_port))); |
| 276 | event_del(&l->ev); |
| 277 | close(l->sock); |
| 278 | } |
| 279 | l->sock = -1; |
| 280 | } |
| 281 | TAILQ_FOREACH(module, &radiusd->module, next)for((module) = ((&radiusd->module)->tqh_first); (module ) != ((void *)0); (module) = ((module)->next.tqe_next)) { |
| 282 | radiusd_module_stop(module); |
| 283 | radiusd_module_close(module); |
| 284 | } |
| 285 | if (signal_pending(&radiusd->ev_sigterm, NULL)event_pending(&radiusd->ev_sigterm, 0x08, ((void *)0))) |
| 286 | signal_del(&radiusd->ev_sigterm)event_del(&radiusd->ev_sigterm); |
| 287 | if (signal_pending(&radiusd->ev_sigint, NULL)event_pending(&radiusd->ev_sigint, 0x08, ((void *)0))) |
| 288 | signal_del(&radiusd->ev_sigint)event_del(&radiusd->ev_sigint); |
| 289 | if (signal_pending(&radiusd->ev_sighup, NULL)event_pending(&radiusd->ev_sighup, 0x08, ((void *)0))) |
| 290 | signal_del(&radiusd->ev_sighup)event_del(&radiusd->ev_sighup); |
| 291 | if (signal_pending(&radiusd->ev_sigchld, NULL)event_pending(&radiusd->ev_sigchld, 0x08, ((void *)0))) |
| 292 | signal_del(&radiusd->ev_sigchld)event_del(&radiusd->ev_sigchld); |
| 293 | } |
| 294 | |
| 295 | static void |
| 296 | radiusd_free(struct radiusd *radiusd) |
| 297 | { |
| 298 | int i; |
| 299 | struct radiusd_listen *listn, *listnt; |
| 300 | struct radiusd_client *client, *clientt; |
| 301 | struct radiusd_module *module, *modulet; |
| 302 | struct radiusd_module_ref *modref, *modreft; |
| 303 | struct radiusd_authentication *authen, *authent; |
| 304 | |
| 305 | TAILQ_FOREACH_SAFE(authen, &radiusd->authen, next, authent)for ((authen) = ((&radiusd->authen)->tqh_first); (authen ) != ((void *)0) && ((authent) = ((authen)->next.tqe_next ), 1); (authen) = (authent)) { |
| 306 | TAILQ_REMOVE(&radiusd->authen, authen, next)do { if (((authen)->next.tqe_next) != ((void *)0)) (authen )->next.tqe_next->next.tqe_prev = (authen)->next.tqe_prev ; else (&radiusd->authen)->tqh_last = (authen)-> next.tqe_prev; *(authen)->next.tqe_prev = (authen)->next .tqe_next; ; ; } while (0); |
| 307 | free(authen->auth); |
| 308 | TAILQ_FOREACH_SAFE(modref, &authen->deco, next, modreft)for ((modref) = ((&authen->deco)->tqh_first); (modref ) != ((void *)0) && ((modreft) = ((modref)->next.tqe_next ), 1); (modref) = (modreft)) { |
| 309 | TAILQ_REMOVE(&authen->deco, modref, next)do { if (((modref)->next.tqe_next) != ((void *)0)) (modref )->next.tqe_next->next.tqe_prev = (modref)->next.tqe_prev ; else (&authen->deco)->tqh_last = (modref)->next .tqe_prev; *(modref)->next.tqe_prev = (modref)->next.tqe_next ; ; ; } while (0); |
| 310 | free(modref); |
| 311 | } |
| 312 | for (i = 0; authen->username[i] != NULL((void *)0); i++) |
| 313 | free(authen->username[i]); |
| 314 | free(authen->username); |
| 315 | free(authen); |
| 316 | } |
| 317 | TAILQ_FOREACH_SAFE(module, &radiusd->module, next, modulet)for ((module) = ((&radiusd->module)->tqh_first); (module ) != ((void *)0) && ((modulet) = ((module)->next.tqe_next ), 1); (module) = (modulet)) { |
| 318 | TAILQ_REMOVE(&radiusd->module, module, next)do { if (((module)->next.tqe_next) != ((void *)0)) (module )->next.tqe_next->next.tqe_prev = (module)->next.tqe_prev ; else (&radiusd->module)->tqh_last = (module)-> next.tqe_prev; *(module)->next.tqe_prev = (module)->next .tqe_next; ; ; } while (0); |
| 319 | radiusd_module_unload(module); |
| 320 | } |
| 321 | TAILQ_FOREACH_SAFE(client, &radiusd->client, next, clientt)for ((client) = ((&radiusd->client)->tqh_first); (client ) != ((void *)0) && ((clientt) = ((client)->next.tqe_next ), 1); (client) = (clientt)) { |
| 322 | TAILQ_REMOVE(&radiusd->client, client, next)do { if (((client)->next.tqe_next) != ((void *)0)) (client )->next.tqe_next->next.tqe_prev = (client)->next.tqe_prev ; else (&radiusd->client)->tqh_last = (client)-> next.tqe_prev; *(client)->next.tqe_prev = (client)->next .tqe_next; ; ; } while (0); |
| 323 | explicit_bzero(client->secret, sizeof(client->secret)); |
| 324 | free(client); |
| 325 | } |
| 326 | TAILQ_FOREACH_SAFE(listn, &radiusd->listen, next, listnt)for ((listn) = ((&radiusd->listen)->tqh_first); (listn ) != ((void *)0) && ((listnt) = ((listn)->next.tqe_next ), 1); (listn) = (listnt)) { |
| 327 | TAILQ_REMOVE(&radiusd->listen, listn, next)do { if (((listn)->next.tqe_next) != ((void *)0)) (listn)-> next.tqe_next->next.tqe_prev = (listn)->next.tqe_prev; else (&radiusd->listen)->tqh_last = (listn)->next.tqe_prev ; *(listn)->next.tqe_prev = (listn)->next.tqe_next; ; ; } while (0); |
| 328 | free(listn); |
| 329 | } |
| 330 | free(radiusd); |
| 331 | } |
| 332 | |
| 333 | /*********************************************************************** |
| 334 | * Network event handlers |
| 335 | ***********************************************************************/ |
| 336 | #define IPv4_cmp(_in, _addr, _mask)( ((_in)->s_addr & (_mask)->addr.ipv4.s_addr) == (_addr )->addr.ipv4.s_addr) ( \ |
| 337 | ((_in)->s_addr & (_mask)->addr.ipv4.s_addr) == \ |
| 338 | (_addr)->addr.ipv4.s_addr) |
| 339 | #define s6_addr32(_in6)((uint32_t *)(_in6)->__u6_addr.__u6_addr8) ((uint32_t *)(_in6)->s6_addr__u6_addr.__u6_addr8) |
| 340 | #define IPv6_cmp(_in6, _addr, _mask)( ((((uint32_t *)(_in6)->__u6_addr.__u6_addr8)[3] & (_mask )->addr.addr32[3]) == (_addr)->addr.addr32[3]) && ((((uint32_t *)(_in6)->__u6_addr.__u6_addr8)[2] & (_mask )->addr.addr32[2]) == (_addr)->addr.addr32[2]) && ((((uint32_t *)(_in6)->__u6_addr.__u6_addr8)[1] & (_mask )->addr.addr32[1]) == (_addr)->addr.addr32[1]) && ((((uint32_t *)(_in6)->__u6_addr.__u6_addr8)[0] & (_mask )->addr.addr32[0]) == (_addr)->addr.addr32[0])) ( \ |
| 341 | ((s6_addr32(_in6)((uint32_t *)(_in6)->__u6_addr.__u6_addr8)[3] & (_mask)->addr.addr32[3]) \ |
| 342 | == (_addr)->addr.addr32[3]) && \ |
| 343 | ((s6_addr32(_in6)((uint32_t *)(_in6)->__u6_addr.__u6_addr8)[2] & (_mask)->addr.addr32[2]) \ |
| 344 | == (_addr)->addr.addr32[2]) && \ |
| 345 | ((s6_addr32(_in6)((uint32_t *)(_in6)->__u6_addr.__u6_addr8)[1] & (_mask)->addr.addr32[1]) \ |
| 346 | == (_addr)->addr.addr32[1]) && \ |
| 347 | ((s6_addr32(_in6)((uint32_t *)(_in6)->__u6_addr.__u6_addr8)[0] & (_mask)->addr.addr32[0]) \ |
| 348 | == (_addr)->addr.addr32[0])) |
| 349 | |
| 350 | static void |
| 351 | radiusd_listen_on_event(int fd, short evmask, void *ctx) |
| 352 | { |
| 353 | int i, sz, req_id, req_code; |
| 354 | struct radiusd_listen *listn = ctx; |
| 355 | static u_char buf[65535]; |
| 356 | static char username[256]; |
| 357 | struct sockaddr_storage peer; |
| 358 | socklen_t peersz; |
| 359 | RADIUS_PACKET *packet = NULL((void *)0); |
| 360 | char peerstr[NI_MAXHOST256 + NI_MAXSERV32 + 30]; |
| 361 | struct radiusd_authentication *authen; |
| 362 | struct radiusd_client *client; |
| 363 | struct radius_query *q; |
| 364 | #define in(_x) (((struct sockaddr_in *)_x)->sin_addr) |
| 365 | #define in6(_x) (((struct sockaddr_in6 *)_x)->sin6_addr) |
| 366 | |
| 367 | if (evmask & EV_READ0x02) { |
| 368 | peersz = sizeof(peer); |
| 369 | if ((sz = recvfrom(listn->sock, buf, sizeof(buf), 0, |
| 370 | (struct sockaddr *)&peer, &peersz)) == -1) { |
| 371 | if (errno(*__errno()) == EAGAIN35) |
| 372 | return; |
| 373 | log_warn("%s: recvfrom() failed", __func__); |
| 374 | goto on_error; |
| 375 | } |
| 376 | RADIUSD_ASSERT(peer.ss_family == AF_INET ||do { if (!(peer.ss_family == 2 || peer.ss_family == 24)) { log_warnx ( "ASSERT(%s) failed in %s() at %s:%d", "peer.ss_family == AF_INET || peer.ss_family == AF_INET6" , __func__, "/usr/src/usr.sbin/radiusd/radiusd/../radiusd.c", 377); if (debug) abort(); } } while (0 ) |
| 377 | peer.ss_family == AF_INET6)do { if (!(peer.ss_family == 2 || peer.ss_family == 24)) { log_warnx ( "ASSERT(%s) failed in %s() at %s:%d", "peer.ss_family == AF_INET || peer.ss_family == AF_INET6" , __func__, "/usr/src/usr.sbin/radiusd/radiusd/../radiusd.c", 377); if (debug) abort(); } } while (0 ); |
| 378 | |
| 379 | /* prepare some information about this messages */ |
| 380 | if (addrport_tostring((struct sockaddr *)&peer, peersz, |
| 381 | peerstr, sizeof(peerstr)) == NULL((void *)0)) { |
| 382 | log_warn("%s: getnameinfo() failed", __func__); |
| 383 | goto on_error; |
| 384 | } |
| 385 | if ((packet = radius_convert_packet(buf, sz)) == NULL((void *)0)) { |
| 386 | log_warn("%s: radius_convert_packet() failed", |
| 387 | __func__); |
| 388 | goto on_error; |
| 389 | } |
| 390 | req_id = radius_get_id(packet); |
| 391 | req_code = radius_get_code(packet); |
| 392 | |
| 393 | /* |
| 394 | * Find a matching `client' entry |
| 395 | */ |
| 396 | TAILQ_FOREACH(client, &listn->radiusd->client, next)for((client) = ((&listn->radiusd->client)->tqh_first ); (client) != ((void *)0); (client) = ((client)->next.tqe_next )) { |
| 397 | if (client->af != peer.ss_family) |
| 398 | continue; |
| 399 | if (peer.ss_family == AF_INET2 && |
| 400 | IPv4_cmp(&((struct sockaddr_in *)&peer)->sin_addr,( ((&((struct sockaddr_in *)&peer)->sin_addr)-> s_addr & (&client->mask)->addr.ipv4.s_addr) == ( &client->addr)->addr.ipv4.s_addr) |
| 401 | &client->addr, &client->mask)( ((&((struct sockaddr_in *)&peer)->sin_addr)-> s_addr & (&client->mask)->addr.ipv4.s_addr) == ( &client->addr)->addr.ipv4.s_addr)) |
| 402 | break; |
| 403 | else if (peer.ss_family == AF_INET624 && |
| 404 | IPv6_cmp(&((struct sockaddr_in6 *)&peer)->sin6_addr,( ((((uint32_t *)(&((struct sockaddr_in6 *)&peer)-> sin6_addr)->__u6_addr.__u6_addr8)[3] & (&client-> mask)->addr.addr32[3]) == (&client->addr)->addr. addr32[3]) && ((((uint32_t *)(&((struct sockaddr_in6 *)&peer)->sin6_addr)->__u6_addr.__u6_addr8)[2] & (&client->mask)->addr.addr32[2]) == (&client-> addr)->addr.addr32[2]) && ((((uint32_t *)(&((struct sockaddr_in6 *)&peer)->sin6_addr)->__u6_addr.__u6_addr8 )[1] & (&client->mask)->addr.addr32[1]) == (& client->addr)->addr.addr32[1]) && ((((uint32_t * )(&((struct sockaddr_in6 *)&peer)->sin6_addr)-> __u6_addr.__u6_addr8)[0] & (&client->mask)->addr .addr32[0]) == (&client->addr)->addr.addr32[0])) |
| 405 | &client->addr, &client->mask)( ((((uint32_t *)(&((struct sockaddr_in6 *)&peer)-> sin6_addr)->__u6_addr.__u6_addr8)[3] & (&client-> mask)->addr.addr32[3]) == (&client->addr)->addr. addr32[3]) && ((((uint32_t *)(&((struct sockaddr_in6 *)&peer)->sin6_addr)->__u6_addr.__u6_addr8)[2] & (&client->mask)->addr.addr32[2]) == (&client-> addr)->addr.addr32[2]) && ((((uint32_t *)(&((struct sockaddr_in6 *)&peer)->sin6_addr)->__u6_addr.__u6_addr8 )[1] & (&client->mask)->addr.addr32[1]) == (& client->addr)->addr.addr32[1]) && ((((uint32_t * )(&((struct sockaddr_in6 *)&peer)->sin6_addr)-> __u6_addr.__u6_addr8)[0] & (&client->mask)->addr .addr32[0]) == (&client->addr)->addr.addr32[0]))) |
| 406 | break; |
| 407 | } |
| 408 | if (client == NULL((void *)0)) { |
| 409 | log_warnx("Received %s(code=%d) from %s id=%d: " |
| 410 | "no `client' matches", radius_code_string(req_code), |
| 411 | req_code, peerstr, req_id); |
| 412 | goto on_error; |
| 413 | } |
| 414 | |
| 415 | /* Check the client's Message-Authenticator */ |
| 416 | if (client->msgauth_required && |
| 417 | !radius_has_attr(packet, |
| 418 | RADIUS_TYPE_MESSAGE_AUTHENTICATOR80)) { |
| 419 | log_warnx("Received %s(code=%d) from %s id=%d: " |
| 420 | "no message authenticator", |
| 421 | radius_code_string(req_code), req_code, peerstr, |
| 422 | req_id); |
| 423 | goto on_error; |
| 424 | } |
| 425 | |
| 426 | if (radius_has_attr(packet, |
| 427 | RADIUS_TYPE_MESSAGE_AUTHENTICATOR80) && |
| 428 | radius_check_message_authenticator(packet, client->secret) |
| 429 | != 0) { |
| 430 | log_warnx("Received %s(code=%d) from %s id=%d: " |
| 431 | "bad message authenticator", |
| 432 | radius_code_string(req_code), req_code, peerstr, |
| 433 | req_id); |
| 434 | goto on_error; |
| 435 | } |
| 436 | |
| 437 | /* |
| 438 | * Find a duplicate request. In RFC 2865, it has the same |
| 439 | * source IP address and source UDP port and Identifier. |
| 440 | */ |
| 441 | TAILQ_FOREACH(q, &listn->radiusd->query, next)for((q) = ((&listn->radiusd->query)->tqh_first); (q) != ((void *)0); (q) = ((q)->next.tqe_next)) { |
| 442 | if (peer.ss_family == q->clientaddr.ss_family && |
| 443 | ((peer.ss_family == AF_INET2 && |
| 444 | in(&q->clientaddr).s_addr == |
| 445 | in(&peer).s_addr) || |
| 446 | (peer.ss_family == AF_INET624 && |
| 447 | IN6_ARE_ADDR_EQUAL((memcmp(&(&in6(&q->clientaddr))->__u6_addr. __u6_addr8[0], &(&in6(&peer))->__u6_addr.__u6_addr8 [0], sizeof(struct in6_addr)) == 0) |
| 448 | &in6(&q->clientaddr), &in6(&peer))(memcmp(&(&in6(&q->clientaddr))->__u6_addr. __u6_addr8[0], &(&in6(&peer))->__u6_addr.__u6_addr8 [0], sizeof(struct in6_addr)) == 0))) && |
| 449 | ((struct sockaddr_in *)&q->clientaddr)->sin_port == |
| 450 | ((struct sockaddr_in *)&peer)->sin_port && |
| 451 | req_id == q->req_id) |
| 452 | break; /* found it */ |
| 453 | } |
| 454 | if (q != NULL((void *)0)) { |
| 455 | log_info("Received %s(code=%d) from %s id=%d: " |
| 456 | "duplicate request by q=%u", |
| 457 | radius_code_string(req_code), req_code, peerstr, |
| 458 | req_id, q->id); |
| 459 | /* XXX RFC 5080 suggests to answer the cached result */ |
| 460 | goto on_error; |
| 461 | } |
| 462 | |
| 463 | /* FIXME: we can support other request codes */ |
| 464 | if (req_code != RADIUS_CODE_ACCESS_REQUEST1) { |
| 465 | log_info("Received %s(code=%d) from %s id=%d: %s " |
| 466 | "is not supported in this implementation", |
| 467 | radius_code_string(req_code), req_code, peerstr, |
| 468 | req_id, radius_code_string(req_code)); |
| 469 | goto on_error; |
| 470 | } |
| 471 | |
| 472 | /* |
| 473 | * Find a matching `authenticate' entry |
| 474 | */ |
| 475 | if (radius_get_string_attr(packet, RADIUS_TYPE_USER_NAME1, |
| 476 | username, sizeof(username)) != 0) { |
| 477 | log_info("Received %s(code=%d) from %s id=%d: " |
| 478 | "no User-Name attribute", |
| 479 | radius_code_string(req_code), req_code, peerstr, |
| 480 | req_id); |
| 481 | goto on_error; |
| 482 | } |
| 483 | TAILQ_FOREACH(authen, &listn->radiusd->authen, next)for((authen) = ((&listn->radiusd->authen)->tqh_first ); (authen) != ((void *)0); (authen) = ((authen)->next.tqe_next )) { |
| 484 | for (i = 0; authen->username[i] != NULL((void *)0); i++) { |
| 485 | if (fnmatch(authen->username[i], username, 0) |
| 486 | == 0) |
| 487 | goto found; |
| 488 | } |
| 489 | } |
| 490 | found: |
| 491 | if (authen == NULL((void *)0)) { |
| 492 | log_warnx("Received %s(code=%d) from %s id=%d " |
| 493 | "username=%s: no `authenticate' matches.", |
| 494 | radius_code_string(req_code), req_code, peerstr, |
| 495 | req_id, username); |
| 496 | goto on_error; |
| 497 | } |
| 498 | RADIUSD_ASSERT(authen->auth != NULL)do { if (!(authen->auth != ((void *)0))) { log_warnx( "ASSERT(%s) failed in %s() at %s:%d" , "authen->auth != NULL", __func__, "/usr/src/usr.sbin/radiusd/radiusd/../radiusd.c" , 498); if (debug) abort(); } } while (0 ); |
| 499 | |
| 500 | if (!MODULE_DO_USERPASS(authen->auth->module)((authen->auth->module)->fd >= 0 && ((authen ->auth->module)->capabilities & 0x1) != 0) && |
| 501 | !MODULE_DO_ACCSREQ(authen->auth->module)((authen->auth->module)->fd >= 0 && ((authen ->auth->module)->capabilities & 0x2) != 0)) { |
| 502 | log_warnx("Received %s(code=%d) from %s id=%d " |
| 503 | "username=%s: module `%s' is not running.", |
| 504 | radius_code_string(req_code), req_code, peerstr, |
| 505 | req_id, username, authen->auth->module->name); |
| 506 | goto on_error; |
| 507 | } |
| 508 | if ((q = calloc(1, sizeof(struct radius_query))) == NULL((void *)0)) { |
| 509 | log_warn("%s: Out of memory", __func__); |
| 510 | goto on_error; |
| 511 | } |
| 512 | memcpy(&q->clientaddr, &peer, peersz); |
| 513 | strlcpy(q->username, username, sizeof(q->username)); |
| 514 | q->id = ++radius_query_id_seq; |
| 515 | q->clientaddrlen = peersz; |
| 516 | q->authen = authen; |
| 517 | q->listen = listn; |
| 518 | q->req = packet; |
| 519 | q->client = client; |
| 520 | q->req_id = req_id; |
| 521 | radius_get_authenticator(packet, q->req_auth); |
| 522 | |
| 523 | log_info("Received %s(code=%d) from %s id=%d username=%s " |
| 524 | "q=%u: `%s' authentication is starting", |
| 525 | radius_code_string(req_code), req_code, peerstr, q->req_id, |
| 526 | q->username, q->id, q->authen->auth->module->name); |
| 527 | TAILQ_INSERT_TAIL(&listn->radiusd->query, q, next)do { (q)->next.tqe_next = ((void *)0); (q)->next.tqe_prev = (&listn->radiusd->query)->tqh_last; *(&listn ->radiusd->query)->tqh_last = (q); (&listn->radiusd ->query)->tqh_last = &(q)->next.tqe_next; } while (0); |
| 528 | |
| 529 | radius_query_request(q); |
| 530 | |
| 531 | return; |
| 532 | } |
| 533 | on_error: |
| 534 | if (packet != NULL((void *)0)) |
| 535 | radius_delete_packet(packet); |
| 536 | #undef in |
| 537 | #undef in6 |
| 538 | |
| 539 | return; |
| 540 | } |
| 541 | |
| 542 | static void |
| 543 | radius_query_request(struct radius_query *q) |
| 544 | { |
| 545 | struct radiusd_authentication *authen = q->authen; |
| 546 | |
| 547 | /* first or next request decoration */ |
| 548 | for (;;) { |
| 549 | if (q->deco == NULL((void *)0)) |
| 550 | q->deco = TAILQ_FIRST(&q->authen->deco)((&q->authen->deco)->tqh_first); |
| 551 | else |
| 552 | q->deco = TAILQ_NEXT(q->deco, next)((q->deco)->next.tqe_next); |
| 553 | if (q->deco == NULL((void *)0) || MODULE_DO_REQDECO(q->deco->module)((q->deco->module)->fd >= 0 && ((q->deco ->module)->capabilities & 0x4) != 0)) |
| 554 | break; |
| 555 | } |
| 556 | |
| 557 | if (q->deco != NULL((void *)0)) |
| 558 | radiusd_module_request_decoration(q->deco->module, q); |
| 559 | else { |
| 560 | RADIUSD_ASSERT(authen->auth != NULL)do { if (!(authen->auth != ((void *)0))) { log_warnx( "ASSERT(%s) failed in %s() at %s:%d" , "authen->auth != NULL", __func__, "/usr/src/usr.sbin/radiusd/radiusd/../radiusd.c" , 560); if (debug) abort(); } } while (0 ); |
| 561 | if (MODULE_DO_ACCSREQ(authen->auth->module)((authen->auth->module)->fd >= 0 && ((authen ->auth->module)->capabilities & 0x2) != 0)) |
| 562 | radiusd_module_access_request(authen->auth->module, q); |
| 563 | else if (MODULE_DO_USERPASS(authen->auth->module)((authen->auth->module)->fd >= 0 && ((authen ->auth->module)->capabilities & 0x1) != 0)) |
| 564 | radiusd_module_userpass(authen->auth->module, q); |
| 565 | } |
| 566 | } |
| 567 | |
| 568 | static void |
| 569 | radius_query_response(struct radius_query *q) |
| 570 | { |
| 571 | int sz, res_id, res_code; |
| 572 | char buf[NI_MAXHOST256 + NI_MAXSERV32 + 30]; |
| 573 | |
| 574 | /* first or next response decoration */ |
| 575 | for (;;) { |
| 576 | if (q->deco == NULL((void *)0)) |
| 577 | q->deco = TAILQ_FIRST(&q->authen->deco)((&q->authen->deco)->tqh_first); |
| 578 | else |
| 579 | q->deco = TAILQ_NEXT(q->deco, next)((q->deco)->next.tqe_next); |
| 580 | if (q->deco == NULL((void *)0) || MODULE_DO_RESDECO(q->deco->module)((q->deco->module)->fd >= 0 && ((q->deco ->module)->capabilities & 0x8) != 0)) |
| 581 | break; |
| 582 | } |
| 583 | |
| 584 | if (q->deco != NULL((void *)0)) { |
| 585 | radiusd_module_response_decoration(q->deco->module, q); |
| 586 | return; |
| 587 | } |
| 588 | |
| 589 | if (radiusd_access_response_fixup(q) != 0) |
| 590 | goto on_error; |
| 591 | |
| 592 | res_id = radius_get_id(q->res); |
| 593 | res_code = radius_get_code(q->res); |
| 594 | |
| 595 | /* Reset response/message authenticator */ |
| 596 | if (radius_has_attr(q->res, RADIUS_TYPE_MESSAGE_AUTHENTICATOR80)) |
| 597 | radius_del_attr_all(q->res, RADIUS_TYPE_MESSAGE_AUTHENTICATOR80); |
| 598 | radius_put_message_authenticator(q->res, q->client->secret); |
| 599 | radius_set_response_authenticator(q->res, q->client->secret); |
| 600 | |
| 601 | log_info("Sending %s(code=%d) to %s id=%u q=%u", |
| 602 | radius_code_string(res_code), res_code, |
| 603 | addrport_tostring((struct sockaddr *)&q->clientaddr, |
| 604 | q->clientaddrlen, buf, sizeof(buf)), res_id, q->id); |
| 605 | |
| 606 | if ((sz = sendto(q->listen->sock, radius_get_data(q->res), |
Although the value stored to 'sz' is used in the enclosing expression, the value is never actually read from 'sz' | |
| 607 | radius_get_length(q->res), 0, |
| 608 | (struct sockaddr *)&q->clientaddr, q->clientaddrlen)) <= 0) |
| 609 | log_warn("Sending a RADIUS response failed"); |
| 610 | on_error: |
| 611 | radiusd_access_request_aborted(q); |
| 612 | |
| 613 | } |
| 614 | |
| 615 | /*********************************************************************** |
| 616 | * Callback functions from the modules |
| 617 | ***********************************************************************/ |
| 618 | void |
| 619 | radiusd_access_request_answer(struct radius_query *q) |
| 620 | { |
| 621 | const char *authen_secret = q->authen->auth->module->secret; |
| 622 | |
| 623 | radius_set_request_packet(q->res, q->req); |
| 624 | |
| 625 | if (authen_secret == NULL((void *)0)) { |
| 626 | /* |
| 627 | * The module diddn't check the authenticators |
| 628 | */ |
| 629 | if (radius_check_response_authenticator(q->res, |
| 630 | q->client->secret) != 0) { |
| 631 | log_info("Response from module has bad response " |
| 632 | "authenticator: id=%d", q->id); |
| 633 | goto on_error; |
| 634 | } |
| 635 | if (radius_has_attr(q->res, |
| 636 | RADIUS_TYPE_MESSAGE_AUTHENTICATOR80) && |
| 637 | radius_check_message_authenticator(q->res, |
| 638 | q->client->secret) != 0) { |
| 639 | log_info("Response from module has bad message " |
| 640 | "authenticator: id=%d", q->id); |
| 641 | goto on_error; |
| 642 | } |
| 643 | } |
| 644 | |
| 645 | RADIUSD_ASSERT(q->deco == NULL)do { if (!(q->deco == ((void *)0))) { log_warnx( "ASSERT(%s) failed in %s() at %s:%d" , "q->deco == NULL", __func__, "/usr/src/usr.sbin/radiusd/radiusd/../radiusd.c" , 645); if (debug) abort(); } } while (0 ); |
| 646 | radius_query_response(q); |
| 647 | |
| 648 | return; |
| 649 | on_error: |
| 650 | radiusd_access_request_aborted(q); |
| 651 | } |
| 652 | |
| 653 | void |
| 654 | radiusd_access_request_aborted(struct radius_query *q) |
| 655 | { |
| 656 | if (q->req != NULL((void *)0)) |
| 657 | radius_delete_packet(q->req); |
| 658 | if (q->res != NULL((void *)0)) |
| 659 | radius_delete_packet(q->res); |
| 660 | TAILQ_REMOVE(&q->listen->radiusd->query, q, next)do { if (((q)->next.tqe_next) != ((void *)0)) (q)->next .tqe_next->next.tqe_prev = (q)->next.tqe_prev; else (& q->listen->radiusd->query)->tqh_last = (q)->next .tqe_prev; *(q)->next.tqe_prev = (q)->next.tqe_next; ; ; } while (0); |
| 661 | free(q); |
| 662 | } |
| 663 | |
| 664 | /*********************************************************************** |
| 665 | * Signal handlers |
| 666 | ***********************************************************************/ |
| 667 | static void |
| 668 | radiusd_on_sigterm(int fd, short evmask, void *ctx) |
| 669 | { |
| 670 | struct radiusd *radiusd = ctx; |
| 671 | |
| 672 | log_info("Received SIGTERM"); |
| 673 | radiusd_stop(radiusd); |
| 674 | } |
| 675 | |
| 676 | static void |
| 677 | radiusd_on_sigint(int fd, short evmask, void *ctx) |
| 678 | { |
| 679 | struct radiusd *radiusd = ctx; |
| 680 | |
| 681 | log_info("Received SIGINT"); |
| 682 | radiusd_stop(radiusd); |
| 683 | } |
| 684 | |
| 685 | static void |
| 686 | radiusd_on_sighup(int fd, short evmask, void *ctx) |
| 687 | { |
| 688 | log_info("Received SIGHUP"); |
| 689 | } |
| 690 | |
| 691 | static void |
| 692 | radiusd_on_sigchld(int fd, short evmask, void *ctx) |
| 693 | { |
| 694 | struct radiusd *radiusd = ctx; |
| 695 | struct radiusd_module *module; |
| 696 | pid_t pid; |
| 697 | int status; |
| 698 | |
| 699 | log_debug("Received SIGCHLD"); |
| 700 | while ((pid = wait3(&status, WNOHANG0x01, NULL((void *)0))) != 0) { |
| 701 | if (pid == -1) |
| 702 | break; |
| 703 | TAILQ_FOREACH(module, &radiusd->module, next)for((module) = ((&radiusd->module)->tqh_first); (module ) != ((void *)0); (module) = ((module)->next.tqe_next)) { |
| 704 | if (module->pid == pid) { |
| 705 | if (WIFEXITED(status)(((status) & 0177) == 0)) |
| 706 | log_warnx("module `%s'(pid=%d) exited " |
| 707 | "with status %d", module->name, |
| 708 | (int)pid, WEXITSTATUS(status)(int)(((unsigned)(status) >> 8) & 0xff)); |
| 709 | else |
| 710 | log_warnx("module `%s'(pid=%d) exited " |
| 711 | "by signal %d", module->name, |
| 712 | (int)pid, WTERMSIG(status)(((status) & 0177))); |
| 713 | break; |
| 714 | } |
| 715 | } |
| 716 | if (!module) { |
| 717 | if (WIFEXITED(status)(((status) & 0177) == 0)) |
| 718 | log_warnx("unkown child process pid=%d exited " |
| 719 | "with status %d", (int)pid, |
| 720 | WEXITSTATUS(status)(int)(((unsigned)(status) >> 8) & 0xff)); |
| 721 | else |
| 722 | log_warnx("unkown child process pid=%d exited " |
| 723 | "by signal %d", (int)pid, |
| 724 | WTERMSIG(status)(((status) & 0177))); |
| 725 | } |
| 726 | } |
| 727 | } |
| 728 | |
| 729 | static const char * |
| 730 | radius_code_string(int code) |
| 731 | { |
| 732 | int i; |
| 733 | struct _codestrings { |
| 734 | int code; |
| 735 | const char *string; |
| 736 | } codestrings[] = { |
| 737 | { RADIUS_CODE_ACCESS_REQUEST1, "Access-Request" }, |
| 738 | { RADIUS_CODE_ACCESS_ACCEPT2, "Access-Accept" }, |
| 739 | { RADIUS_CODE_ACCESS_REJECT3, "Access-Reject" }, |
| 740 | { RADIUS_CODE_ACCOUNTING_REQUEST4, "Accounting-Request" }, |
| 741 | { RADIUS_CODE_ACCOUNTING_RESPONSE5, "Accounting-Response" }, |
| 742 | { RADIUS_CODE_ACCESS_CHALLENGE11, "Access-Challenge" }, |
| 743 | { RADIUS_CODE_STATUS_SERVER12, "Status-Server" }, |
| 744 | { RADIUS_CODE_STATUS_CLIENT13, "Status-Client" }, |
| 745 | { -1, NULL((void *)0) } |
| 746 | }; |
| 747 | |
| 748 | for (i = 0; codestrings[i].code != -1; i++) |
| 749 | if (codestrings[i].code == code) |
| 750 | return (codestrings[i].string); |
| 751 | |
| 752 | return ("Unknown"); |
| 753 | } |
| 754 | |
| 755 | void |
| 756 | radiusd_conf_init(struct radiusd *conf) |
| 757 | { |
| 758 | |
| 759 | TAILQ_INIT(&conf->listen)do { (&conf->listen)->tqh_first = ((void *)0); (& conf->listen)->tqh_last = &(&conf->listen)-> tqh_first; } while (0); |
| 760 | TAILQ_INIT(&conf->module)do { (&conf->module)->tqh_first = ((void *)0); (& conf->module)->tqh_last = &(&conf->module)-> tqh_first; } while (0); |
| 761 | TAILQ_INIT(&conf->authen)do { (&conf->authen)->tqh_first = ((void *)0); (& conf->authen)->tqh_last = &(&conf->authen)-> tqh_first; } while (0); |
| 762 | TAILQ_INIT(&conf->client)do { (&conf->client)->tqh_first = ((void *)0); (& conf->client)->tqh_last = &(&conf->client)-> tqh_first; } while (0); |
| 763 | |
| 764 | return; |
| 765 | } |
| 766 | |
| 767 | /* |
| 768 | * Fix some attributes which depend the secret value. |
| 769 | */ |
| 770 | static int |
| 771 | radiusd_access_response_fixup(struct radius_query *q) |
| 772 | { |
| 773 | int res_id; |
| 774 | size_t attrlen; |
| 775 | u_char req_auth[16], attrbuf[256]; |
| 776 | const char *authen_secret = q->authen->auth->module->secret; |
| 777 | |
| 778 | radius_get_authenticator(q->req, req_auth); |
| 779 | |
| 780 | if ((authen_secret != NULL((void *)0) && |
| 781 | strcmp(authen_secret, q->client->secret) != 0) || |
| 782 | timingsafe_bcmp(q->req_auth, req_auth, 16) != 0) { |
| 783 | const char *olds = q->client->secret; |
| 784 | const char *news = authen_secret; |
| 785 | |
| 786 | if (news == NULL((void *)0)) |
| 787 | news = olds; |
| 788 | |
| 789 | /* RFC 2865 Tunnel-Password */ |
| 790 | attrlen = sizeof(attrbuf); |
| 791 | if (radius_get_raw_attr(q->res, RADIUS_TYPE_TUNNEL_PASSWORD69, |
| 792 | attrbuf, &attrlen) == 0) { |
| 793 | radius_attr_unhide(news, req_auth, |
| 794 | attrbuf, attrbuf + 3, attrlen - 3); |
| 795 | radius_attr_hide(olds, q->req_auth, |
| 796 | attrbuf, attrbuf + 3, attrlen - 3); |
| 797 | |
| 798 | radius_del_attr_all(q->res, |
| 799 | RADIUS_TYPE_TUNNEL_PASSWORD69); |
| 800 | radius_put_raw_attr(q->res, |
| 801 | RADIUS_TYPE_TUNNEL_PASSWORD69, attrbuf, attrlen); |
| 802 | } |
| 803 | |
| 804 | /* RFC 2548 Microsoft MPPE-{Send,Recv}-Key */ |
| 805 | attrlen = sizeof(attrbuf); |
| 806 | if (radius_get_vs_raw_attr(q->res, RADIUS_VENDOR_MICROSOFT311, |
| 807 | RADIUS_VTYPE_MPPE_SEND_KEY16, attrbuf, &attrlen) == 0) { |
| 808 | |
| 809 | /* Re-crypt the KEY */ |
| 810 | radius_attr_unhide(news, req_auth, |
| 811 | attrbuf, attrbuf + 2, attrlen - 2); |
| 812 | radius_attr_hide(olds, q->req_auth, |
| 813 | attrbuf, attrbuf + 2, attrlen - 2); |
| 814 | |
| 815 | radius_del_vs_attr_all(q->res, RADIUS_VENDOR_MICROSOFT311, |
| 816 | RADIUS_VTYPE_MPPE_SEND_KEY16); |
| 817 | radius_put_vs_raw_attr(q->res, RADIUS_VENDOR_MICROSOFT311, |
| 818 | RADIUS_VTYPE_MPPE_SEND_KEY16, attrbuf, attrlen); |
| 819 | } |
| 820 | attrlen = sizeof(attrbuf); |
| 821 | if (radius_get_vs_raw_attr(q->res, RADIUS_VENDOR_MICROSOFT311, |
| 822 | RADIUS_VTYPE_MPPE_RECV_KEY17, attrbuf, &attrlen) == 0) { |
| 823 | |
| 824 | /* Re-crypt the KEY */ |
| 825 | radius_attr_unhide(news, req_auth, |
| 826 | attrbuf, attrbuf + 2, attrlen - 2); |
| 827 | radius_attr_hide(olds, q->req_auth, |
| 828 | attrbuf, attrbuf + 2, attrlen - 2); |
| 829 | |
| 830 | radius_del_vs_attr_all(q->res, RADIUS_VENDOR_MICROSOFT311, |
| 831 | RADIUS_VTYPE_MPPE_RECV_KEY17); |
| 832 | radius_put_vs_raw_attr(q->res, RADIUS_VENDOR_MICROSOFT311, |
| 833 | RADIUS_VTYPE_MPPE_RECV_KEY17, attrbuf, attrlen); |
| 834 | } |
| 835 | } |
| 836 | |
| 837 | res_id = radius_get_id(q->res); |
| 838 | if (res_id != q->req_id) { |
| 839 | /* authentication server change the id */ |
| 840 | radius_set_id(q->res, q->req_id); |
| 841 | } |
| 842 | |
| 843 | return (0); |
| 844 | } |
| 845 | |
| 846 | void |
| 847 | radius_attr_hide(const char *secret, const char *authenticator, |
| 848 | const u_char *salt, u_char *plain, int plainlen) |
| 849 | { |
| 850 | int i, j; |
| 851 | u_char b[16]; |
| 852 | MD5_CTX md5ctx; |
| 853 | |
| 854 | i = 0; |
| 855 | do { |
| 856 | MD5Init(&md5ctx); |
| 857 | MD5Update(&md5ctx, secret, strlen(secret)); |
| 858 | if (i == 0) { |
| 859 | MD5Update(&md5ctx, authenticator, 16); |
| 860 | if (salt != NULL((void *)0)) |
| 861 | MD5Update(&md5ctx, salt, 2); |
| 862 | } else |
| 863 | MD5Update(&md5ctx, plain + i - 16, 16); |
| 864 | MD5Final(b, &md5ctx); |
| 865 | |
| 866 | for (j = 0; j < 16 && i < plainlen; i++, j++) |
| 867 | plain[i] ^= b[j]; |
| 868 | } while (i < plainlen); |
| 869 | } |
| 870 | |
| 871 | void |
| 872 | radius_attr_unhide(const char *secret, const char *authenticator, |
| 873 | const u_char *salt, u_char *crypt0, int crypt0len) |
| 874 | { |
| 875 | int i, j; |
| 876 | u_char b[16]; |
| 877 | MD5_CTX md5ctx; |
| 878 | |
| 879 | i = 16 * ((crypt0len - 1) / 16); |
| 880 | while (i >= 0) { |
| 881 | MD5Init(&md5ctx); |
| 882 | MD5Update(&md5ctx, secret, strlen(secret)); |
| 883 | if (i == 0) { |
| 884 | MD5Update(&md5ctx, authenticator, 16); |
| 885 | if (salt != NULL((void *)0)) |
| 886 | MD5Update(&md5ctx, salt, 2); |
| 887 | } else |
| 888 | MD5Update(&md5ctx, crypt0 + i - 16, 16); |
| 889 | MD5Final(b, &md5ctx); |
| 890 | |
| 891 | for (j = 0; j < 16 && i + j < crypt0len; j++) |
| 892 | crypt0[i + j] ^= b[j]; |
| 893 | i -= 16; |
| 894 | } |
| 895 | } |
| 896 | |
| 897 | static struct radius_query * |
| 898 | radiusd_find_query(struct radiusd *radiusd, u_int q_id) |
| 899 | { |
| 900 | struct radius_query *q; |
| 901 | |
| 902 | TAILQ_FOREACH(q, &radiusd->query, next)for((q) = ((&radiusd->query)->tqh_first); (q) != (( void *)0); (q) = ((q)->next.tqe_next)) { |
| 903 | if (q->id == q_id) |
| 904 | return (q); |
| 905 | } |
| 906 | return (NULL((void *)0)); |
| 907 | } |
| 908 | |
| 909 | /*********************************************************************** |
| 910 | * radiusd module handling |
| 911 | ***********************************************************************/ |
| 912 | struct radiusd_module * |
| 913 | radiusd_module_load(struct radiusd *radiusd, const char *path, const char *name) |
| 914 | { |
| 915 | struct radiusd_module *module = NULL((void *)0); |
| 916 | pid_t pid; |
| 917 | int ival, pairsock[] = { -1, -1 }; |
| 918 | const char *av[3]; |
| 919 | ssize_t n; |
| 920 | struct imsg imsg; |
| 921 | |
| 922 | module = calloc(1, sizeof(struct radiusd_module)); |
| 923 | if (module == NULL((void *)0)) |
| 924 | fatal("Out of memory"); |
| 925 | module->radiusd = radiusd; |
| 926 | |
| 927 | if (socketpair(AF_UNIX1, SOCK_STREAM1, PF_UNSPEC0, pairsock) == -1) { |
| 928 | log_warn("Could not load module `%s'(%s): pipe()", name, path); |
| 929 | goto on_error; |
| 930 | } |
| 931 | |
| 932 | pid = fork(); |
| 933 | if (pid == -1) { |
| 934 | log_warn("Could not load module `%s'(%s): fork()", name, path); |
| 935 | goto on_error; |
| 936 | } |
| 937 | if (pid == 0) { |
| 938 | setsid(); |
| 939 | close(pairsock[0]); |
| 940 | av[0] = path; |
| 941 | av[1] = name; |
| 942 | av[2] = NULL((void *)0); |
| 943 | dup2(pairsock[1], STDIN_FILENO0); |
| 944 | dup2(pairsock[1], STDOUT_FILENO1); |
| 945 | close(pairsock[1]); |
| 946 | closefrom(STDERR_FILENO2 + 1); |
| 947 | execv(path, (char * const *)av); |
| 948 | log_warn("Failed to execute %s", path); |
| 949 | _exit(EXIT_FAILURE1); |
| 950 | } |
| 951 | close(pairsock[1]); |
| 952 | |
| 953 | module->fd = pairsock[0]; |
| 954 | if ((ival = fcntl(module->fd, F_GETFL3)) == -1) { |
| 955 | log_warn("Could not load module `%s': fcntl(F_GETFL)", |
| 956 | name); |
| 957 | goto on_error; |
| 958 | } |
| 959 | if (fcntl(module->fd, F_SETFL4, ival | O_NONBLOCK0x0004) == -1) { |
| 960 | log_warn("Could not load module `%s': fcntl(F_SETFL,O_NONBLOCK)", |
| 961 | name); |
| 962 | goto on_error; |
| 963 | } |
| 964 | strlcpy(module->name, name, sizeof(module->name)); |
| 965 | module->pid = pid; |
| 966 | imsg_init(&module->ibuf, module->fd); |
| 967 | |
| 968 | if (imsg_sync_read(&module->ibuf, MODULE_IO_TIMEOUT2000) <= 0 || |
| 969 | (n = imsg_get(&module->ibuf, &imsg)) <= 0) { |
| 970 | log_warnx("Could not load module `%s': module didn't " |
| 971 | "respond", name); |
| 972 | goto on_error; |
| 973 | } |
| 974 | if (imsg.hdr.type != IMSG_RADIUSD_MODULE_LOAD) { |
| 975 | imsg_free(&imsg); |
| 976 | log_warnx("Could not load module `%s': unknown imsg type=%d", |
| 977 | name, imsg.hdr.type); |
| 978 | goto on_error; |
| 979 | } |
| 980 | |
| 981 | module->capabilities = |
| 982 | ((struct radiusd_module_load_arg *)imsg.data)->cap; |
| 983 | |
| 984 | log_debug("Loaded module `%s' successfully. pid=%d", module->name, |
| 985 | module->pid); |
| 986 | imsg_free(&imsg); |
| 987 | |
| 988 | return (module); |
| 989 | |
| 990 | on_error: |
| 991 | free(module); |
| 992 | if (pairsock[0] >= 0) |
| 993 | close(pairsock[0]); |
| 994 | if (pairsock[1] >= 0) |
| 995 | close(pairsock[1]); |
| 996 | |
| 997 | return (NULL((void *)0)); |
| 998 | } |
| 999 | |
| 1000 | void |
| 1001 | radiusd_module_start(struct radiusd_module *module) |
| 1002 | { |
| 1003 | int datalen; |
| 1004 | struct imsg imsg; |
| 1005 | struct timeval tv = { 0, 0 }; |
| 1006 | |
| 1007 | RADIUSD_ASSERT(module->fd >= 0)do { if (!(module->fd >= 0)) { log_warnx( "ASSERT(%s) failed in %s() at %s:%d" , "module->fd >= 0", __func__, "/usr/src/usr.sbin/radiusd/radiusd/../radiusd.c" , 1007); if (debug) abort(); } } while (0 ); |
| 1008 | imsg_compose(&module->ibuf, IMSG_RADIUSD_MODULE_START, 0, 0, -1, |
| 1009 | NULL((void *)0), 0); |
| 1010 | imsg_sync_flush(&module->ibuf, MODULE_IO_TIMEOUT2000); |
| 1011 | if (imsg_sync_read(&module->ibuf, MODULE_IO_TIMEOUT2000) <= 0 || |
| 1012 | imsg_get(&module->ibuf, &imsg) <= 0) { |
| 1013 | log_warnx("Module `%s' could not start: no response", |
| 1014 | module->name); |
| 1015 | goto on_fail; |
| 1016 | } |
| 1017 | |
| 1018 | datalen = imsg.hdr.len - IMSG_HEADER_SIZEsizeof(struct imsg_hdr); |
| 1019 | if (imsg.hdr.type != IMSG_OK) { |
| 1020 | if (imsg.hdr.type == IMSG_NG) { |
| 1021 | if (datalen > 0) |
| 1022 | log_warnx("Module `%s' could not start: %s", |
| 1023 | module->name, (char *)imsg.data); |
| 1024 | else |
| 1025 | log_warnx("Module `%s' could not start", |
| 1026 | module->name); |
| 1027 | } else |
| 1028 | log_warnx("Module `%s' could not started: module " |
| 1029 | "returned unknown message type %d", module->name, |
| 1030 | imsg.hdr.type); |
| 1031 | goto on_fail; |
| 1032 | } |
| 1033 | |
| 1034 | event_set(&module->ev, module->fd, EV_READ0x02, radiusd_module_on_imsg_io, |
| 1035 | module); |
| 1036 | event_add(&module->ev, &tv); |
| 1037 | log_debug("Module `%s' started successfully", module->name); |
| 1038 | |
| 1039 | return; |
| 1040 | on_fail: |
| 1041 | radiusd_module_close(module); |
| 1042 | return; |
| 1043 | } |
| 1044 | |
| 1045 | void |
| 1046 | radiusd_module_stop(struct radiusd_module *module) |
| 1047 | { |
| 1048 | module->stopped = true1; |
| 1049 | |
| 1050 | if (module->secret != NULL((void *)0)) { |
| 1051 | freezero(module->secret, strlen(module->secret)); |
| 1052 | module->secret = NULL((void *)0); |
| 1053 | } |
| 1054 | |
| 1055 | if (module->fd >= 0) { |
| 1056 | imsg_compose(&module->ibuf, IMSG_RADIUSD_MODULE_STOP, 0, 0, -1, |
| 1057 | NULL((void *)0), 0); |
| 1058 | radiusd_module_reset_ev_handler(module); |
| 1059 | } |
| 1060 | } |
| 1061 | |
| 1062 | static void |
| 1063 | radiusd_module_close(struct radiusd_module *module) |
| 1064 | { |
| 1065 | if (module->fd >= 0) { |
| 1066 | event_del(&module->ev); |
| 1067 | imsg_clear(&module->ibuf); |
| 1068 | close(module->fd); |
| 1069 | module->fd = -1; |
| 1070 | } |
| 1071 | } |
| 1072 | |
| 1073 | void |
| 1074 | radiusd_module_unload(struct radiusd_module *module) |
| 1075 | { |
| 1076 | free(module->radpkt); |
| 1077 | radiusd_module_close(module); |
| 1078 | free(module); |
| 1079 | } |
| 1080 | |
| 1081 | static void |
| 1082 | radiusd_module_on_imsg_io(int fd, short evmask, void *ctx) |
| 1083 | { |
| 1084 | struct radiusd_module *module = ctx; |
| 1085 | int ret; |
| 1086 | |
| 1087 | if (evmask & EV_WRITE0x04) |
| 1088 | module->writeready = true1; |
| 1089 | |
| 1090 | if (evmask & EV_READ0x02 || module->ibuf.r.wpos > IMSG_HEADER_SIZEsizeof(struct imsg_hdr)) { |
| 1091 | if (radiusd_module_imsg_read(module, |
| 1092 | (evmask & EV_READ0x02)? true1 : false0) == -1) |
| 1093 | goto on_error; |
| 1094 | } |
| 1095 | |
| 1096 | while (module->writeready && module->ibuf.w.queued) { |
| 1097 | ret = msgbuf_write(&module->ibuf.w); |
| 1098 | if (ret > 0) |
| 1099 | continue; |
| 1100 | module->writeready = false0; |
| 1101 | if (ret == 0 && errno(*__errno()) == EAGAIN35) |
| 1102 | break; |
| 1103 | log_warn("Failed to write to module `%s': msgbuf_write()", |
| 1104 | module->name); |
| 1105 | goto on_error; |
| 1106 | } |
| 1107 | radiusd_module_reset_ev_handler(module); |
| 1108 | |
| 1109 | return; |
| 1110 | on_error: |
| 1111 | radiusd_module_close(module); |
| 1112 | } |
| 1113 | |
| 1114 | static void |
| 1115 | radiusd_module_reset_ev_handler(struct radiusd_module *module) |
| 1116 | { |
| 1117 | short evmask; |
| 1118 | struct timeval *tvp = NULL((void *)0), tv = { 0, 0 }; |
| 1119 | |
| 1120 | RADIUSD_ASSERT(module->fd >= 0)do { if (!(module->fd >= 0)) { log_warnx( "ASSERT(%s) failed in %s() at %s:%d" , "module->fd >= 0", __func__, "/usr/src/usr.sbin/radiusd/radiusd/../radiusd.c" , 1120); if (debug) abort(); } } while (0 ); |
| 1121 | event_del(&module->ev); |
| 1122 | |
| 1123 | evmask = EV_READ0x02; |
| 1124 | if (module->ibuf.w.queued) { |
| 1125 | if (!module->writeready) |
| 1126 | evmask |= EV_WRITE0x04; |
| 1127 | else |
| 1128 | tvp = &tv; /* fire immediately */ |
| 1129 | } else if (module->ibuf.r.wpos > IMSG_HEADER_SIZEsizeof(struct imsg_hdr)) |
| 1130 | tvp = &tv; /* fire immediately */ |
| 1131 | |
| 1132 | /* module stopped and no event handler is set */ |
| 1133 | if (evmask & EV_WRITE0x04 && tvp == NULL((void *)0) && module->stopped) { |
| 1134 | /* stop requested and no more to write */ |
| 1135 | radiusd_module_close(module); |
| 1136 | return; |
| 1137 | } |
| 1138 | |
| 1139 | event_set(&module->ev, module->fd, evmask, radiusd_module_on_imsg_io, |
| 1140 | module); |
| 1141 | if (event_add(&module->ev, tvp) == -1) { |
| 1142 | log_warn("Could not set event handlers for module `%s': " |
| 1143 | "event_add()", module->name); |
| 1144 | radiusd_module_close(module); |
| 1145 | } |
| 1146 | } |
| 1147 | |
| 1148 | static int |
| 1149 | radiusd_module_imsg_read(struct radiusd_module *module, bool_Bool doread) |
| 1150 | { |
| 1151 | int n; |
| 1152 | struct imsg imsg; |
| 1153 | |
| 1154 | if (doread) { |
| 1155 | if ((n = imsg_read(&module->ibuf)) == -1 || n == 0) { |
| 1156 | if (n == -1 && errno(*__errno()) == EAGAIN35) |
| 1157 | return (0); |
| 1158 | if (n == -1) |
| 1159 | log_warn("Receiving a message from module `%s' " |
| 1160 | "failed: imsg_read", module->name); |
| 1161 | /* else closed */ |
| 1162 | radiusd_module_close(module); |
| 1163 | return (-1); |
| 1164 | } |
| 1165 | } |
| 1166 | for (;;) { |
| 1167 | if ((n = imsg_get(&module->ibuf, &imsg)) == -1) { |
| 1168 | log_warn("Receiving a message from module `%s' failed: " |
| 1169 | "imsg_get", module->name); |
| 1170 | return (-1); |
| 1171 | } |
| 1172 | if (n == 0) |
| 1173 | return (0); |
| 1174 | radiusd_module_imsg(module, &imsg); |
| 1175 | } |
| 1176 | |
| 1177 | return (0); |
| 1178 | } |
| 1179 | |
| 1180 | static void |
| 1181 | radiusd_module_imsg(struct radiusd_module *module, struct imsg *imsg) |
| 1182 | { |
| 1183 | int datalen; |
| 1184 | struct radius_query *q; |
| 1185 | u_int q_id; |
| 1186 | |
| 1187 | datalen = imsg->hdr.len - IMSG_HEADER_SIZEsizeof(struct imsg_hdr); |
| 1188 | switch (imsg->hdr.type) { |
| 1189 | case IMSG_RADIUSD_MODULE_NOTIFY_SECRET: |
| 1190 | if (datalen > 0) { |
| 1191 | module->secret = strdup(imsg->data); |
| 1192 | if (module->secret == NULL((void *)0)) |
| 1193 | log_warn("Could not handle NOTIFY_SECRET " |
| 1194 | "from `%s'", module->name); |
| 1195 | } |
| 1196 | break; |
| 1197 | case IMSG_RADIUSD_MODULE_USERPASS_OK: |
| 1198 | case IMSG_RADIUSD_MODULE_USERPASS_FAIL: |
| 1199 | { |
| 1200 | char *msg = NULL((void *)0); |
| 1201 | const char *msgtypestr; |
| 1202 | |
| 1203 | msgtypestr = (imsg->hdr.type == IMSG_RADIUSD_MODULE_USERPASS_OK) |
| 1204 | ? "USERPASS_OK" : "USERPASS_NG"; |
| 1205 | |
| 1206 | q_id = *(u_int *)imsg->data; |
| 1207 | if (datalen > (ssize_t)sizeof(u_int)) |
| 1208 | msg = (char *)(((u_int *)imsg->data) + 1); |
| 1209 | |
| 1210 | q = radiusd_find_query(module->radiusd, q_id); |
| 1211 | if (q == NULL((void *)0)) { |
| 1212 | log_warnx("Received %s from `%s', but query id=%u " |
| 1213 | "unknown", msgtypestr, module->name, q_id); |
| 1214 | break; |
| 1215 | } |
| 1216 | |
| 1217 | if ((q->res = radius_new_response_packet( |
| 1218 | (imsg->hdr.type == IMSG_RADIUSD_MODULE_USERPASS_OK) |
| 1219 | ? RADIUS_CODE_ACCESS_ACCEPT2 : RADIUS_CODE_ACCESS_REJECT3, |
| 1220 | q->req)) == NULL((void *)0)) { |
| 1221 | log_warn("radius_new_response_packet() failed"); |
| 1222 | radiusd_access_request_aborted(q); |
| 1223 | } else { |
| 1224 | if (msg) |
| 1225 | radius_put_string_attr(q->res, |
| 1226 | RADIUS_TYPE_REPLY_MESSAGE18, msg); |
| 1227 | radius_set_response_authenticator(q->res, |
| 1228 | q->client->secret); |
| 1229 | radiusd_access_request_answer(q); |
| 1230 | } |
| 1231 | break; |
| 1232 | } |
| 1233 | case IMSG_RADIUSD_MODULE_ACCSREQ_ANSWER: |
| 1234 | case IMSG_RADIUSD_MODULE_REQDECO_DONE: |
| 1235 | case IMSG_RADIUSD_MODULE_RESDECO_DONE: |
| 1236 | { |
| 1237 | static struct radiusd_module_radpkt_arg *ans; |
| 1238 | const char *typestr = "unknown"; |
| 1239 | |
| 1240 | switch (imsg->hdr.type) { |
| 1241 | case IMSG_RADIUSD_MODULE_ACCSREQ_ANSWER: |
| 1242 | typestr = "ACCSREQ_ANSWER"; |
| 1243 | break; |
| 1244 | case IMSG_RADIUSD_MODULE_REQDECO_DONE: |
| 1245 | typestr = "REQDECO_DONE"; |
| 1246 | break; |
| 1247 | case IMSG_RADIUSD_MODULE_RESDECO_DONE: |
| 1248 | typestr = "RESDECO_DONE"; |
| 1249 | break; |
| 1250 | } |
| 1251 | |
| 1252 | if (datalen < |
| 1253 | (ssize_t)sizeof(struct radiusd_module_radpkt_arg)) { |
| 1254 | log_warnx("Received %s message, but length is wrong", |
| 1255 | typestr); |
| 1256 | break; |
| 1257 | } |
| 1258 | q_id = ((struct radiusd_module_radpkt_arg *)imsg->data)->q_id; |
| 1259 | q = radiusd_find_query(module->radiusd, q_id); |
| 1260 | if (q == NULL((void *)0)) { |
| 1261 | log_warnx("Received %s from %s, but query id=%u " |
| 1262 | "unknown", typestr, module->name, q_id); |
| 1263 | break; |
| 1264 | } |
| 1265 | if ((ans = radiusd_module_recv_radpkt(module, imsg, |
| 1266 | imsg->hdr.type, typestr)) != NULL((void *)0)) { |
| 1267 | RADIUS_PACKET *radpkt = NULL((void *)0); |
| 1268 | |
| 1269 | if (module->radpktoff > 0 && |
| 1270 | (radpkt = radius_convert_packet( |
| 1271 | module->radpkt, module->radpktoff)) == NULL((void *)0)) { |
| 1272 | log_warn("q=%u radius_convert_packet() failed", |
| 1273 | q->id); |
| 1274 | radiusd_access_request_aborted(q); |
| 1275 | break; |
| 1276 | } |
| 1277 | module->radpktoff = 0; |
| 1278 | switch (imsg->hdr.type) { |
| 1279 | case IMSG_RADIUSD_MODULE_REQDECO_DONE: |
| 1280 | if (radpkt != NULL((void *)0)) { |
| 1281 | radius_delete_packet(q->req); |
| 1282 | q->req = radpkt; |
| 1283 | } |
| 1284 | radius_query_request(q); |
| 1285 | break; |
| 1286 | case IMSG_RADIUSD_MODULE_ACCSREQ_ANSWER: |
| 1287 | if (radpkt == NULL((void *)0)) { |
| 1288 | log_warn("q=%u wrong pkt from module", |
| 1289 | q->id); |
| 1290 | radiusd_access_request_aborted(q); |
| 1291 | } |
| 1292 | q->res = radpkt; |
| 1293 | radiusd_access_request_answer(q); |
| 1294 | break; |
| 1295 | case IMSG_RADIUSD_MODULE_RESDECO_DONE: |
| 1296 | if (radpkt != NULL((void *)0)) { |
| 1297 | radius_delete_packet(q->res); |
| 1298 | radius_set_request_packet(radpkt, |
| 1299 | q->req); |
| 1300 | q->res = radpkt; |
| 1301 | } |
| 1302 | radius_query_response(q); |
| 1303 | break; |
| 1304 | } |
| 1305 | } |
| 1306 | break; |
| 1307 | } |
| 1308 | case IMSG_RADIUSD_MODULE_ACCSREQ_ABORTED: |
| 1309 | { |
| 1310 | q_id = *((u_int *)imsg->data); |
| 1311 | q = radiusd_find_query(module->radiusd, q_id); |
| 1312 | if (q == NULL((void *)0)) { |
| 1313 | log_warnx("Received ACCSREQ_ABORT from %s, but query " |
| 1314 | "id=%u unknown", module->name, q_id); |
| 1315 | break; |
| 1316 | } |
| 1317 | radiusd_access_request_aborted(q); |
| 1318 | break; |
| 1319 | } |
| 1320 | default: |
| 1321 | RADIUSD_DBG(("Unhandled imsg type=%d from %s", imsg->hdr.type, |
| 1322 | module->name)); |
| 1323 | } |
| 1324 | } |
| 1325 | |
| 1326 | static struct radiusd_module_radpkt_arg * |
| 1327 | radiusd_module_recv_radpkt(struct radiusd_module *module, struct imsg *imsg, |
| 1328 | uint32_t imsg_type, const char *type_str) |
| 1329 | { |
| 1330 | struct radiusd_module_radpkt_arg *ans; |
| 1331 | int datalen, chunklen; |
| 1332 | |
| 1333 | datalen = imsg->hdr.len - IMSG_HEADER_SIZEsizeof(struct imsg_hdr); |
| 1334 | ans = (struct radiusd_module_radpkt_arg *)imsg->data; |
| 1335 | if (module->radpktsiz < ans->pktlen) { |
| 1336 | u_char *nradpkt; |
| 1337 | if ((nradpkt = realloc(module->radpkt, ans->pktlen)) == NULL((void *)0)) { |
| 1338 | log_warn("Could not handle received %s message from " |
| 1339 | "`%s'", type_str, module->name); |
| 1340 | goto on_fail; |
| 1341 | } |
| 1342 | module->radpkt = nradpkt; |
| 1343 | module->radpktsiz = ans->pktlen; |
| 1344 | } |
| 1345 | chunklen = datalen - sizeof(struct radiusd_module_radpkt_arg); |
| 1346 | if (chunklen > module->radpktsiz - module->radpktoff) { |
| 1347 | log_warnx("Could not handle received %s message from `%s': " |
| 1348 | "received length is too big", type_str, module->name); |
| 1349 | goto on_fail; |
| 1350 | } |
| 1351 | if (chunklen > 0) { |
| 1352 | memcpy(module->radpkt + module->radpktoff, |
| 1353 | (caddr_t)(ans + 1), chunklen); |
| 1354 | module->radpktoff += chunklen; |
| 1355 | } |
| 1356 | if (!ans->final) |
| 1357 | return (NULL((void *)0)); /* again */ |
| 1358 | if (module->radpktoff != ans->pktlen) { |
| 1359 | log_warnx("Could not handle received %s message from `%s': " |
| 1360 | "length is mismatch", type_str, module->name); |
| 1361 | goto on_fail; |
| 1362 | } |
| 1363 | |
| 1364 | return (ans); |
| 1365 | on_fail: |
| 1366 | module->radpktoff = 0; |
| 1367 | return (NULL((void *)0)); |
| 1368 | } |
| 1369 | |
| 1370 | int |
| 1371 | radiusd_module_set(struct radiusd_module *module, const char *name, |
| 1372 | int argc, char * const * argv) |
| 1373 | { |
| 1374 | struct radiusd_module_set_arg arg; |
| 1375 | struct radiusd_module_object *val; |
| 1376 | int i, niov = 0; |
| 1377 | u_char *buf = NULL((void *)0), *buf0; |
| 1378 | ssize_t n; |
| 1379 | size_t bufsiz = 0, bufoff = 0, bufsiz0; |
| 1380 | size_t vallen, valsiz; |
| 1381 | struct iovec iov[2]; |
| 1382 | struct imsg imsg; |
| 1383 | |
| 1384 | memset(&arg, 0, sizeof(arg)); |
| 1385 | arg.nparamval = argc; |
| 1386 | strlcpy(arg.paramname, name, sizeof(arg.paramname)); |
| 1387 | |
| 1388 | iov[niov].iov_base = &arg; |
| 1389 | iov[niov].iov_len = sizeof(struct radiusd_module_set_arg); |
| 1390 | niov++; |
| 1391 | |
| 1392 | for (i = 0; i < argc; i++) { |
| 1393 | vallen = strlen(argv[i]) + 1; |
| 1394 | valsiz = sizeof(struct radiusd_module_object) + vallen; |
| 1395 | if (bufsiz < bufoff + valsiz) { |
| 1396 | bufsiz0 = bufoff + valsiz + 128; |
| 1397 | if ((buf0 = realloc(buf, bufsiz0)) == NULL((void *)0)) { |
| 1398 | log_warn("Failed to set config parameter to " |
| 1399 | "module `%s': realloc", module->name); |
| 1400 | goto on_error; |
| 1401 | } |
| 1402 | buf = buf0; |
| 1403 | bufsiz = bufsiz0; |
| 1404 | memset(buf + bufoff, 0, bufsiz - bufoff); |
| 1405 | } |
| 1406 | val = (struct radiusd_module_object *)(buf + bufoff); |
| 1407 | val->size = valsiz; |
| 1408 | memcpy(val + 1, argv[i], vallen); |
| 1409 | |
| 1410 | bufoff += valsiz; |
| 1411 | } |
| 1412 | iov[niov].iov_base = buf; |
| 1413 | iov[niov].iov_len = bufoff; |
| 1414 | niov++; |
| 1415 | |
| 1416 | if (imsg_composev(&module->ibuf, IMSG_RADIUSD_MODULE_SET_CONFIG, 0, 0, |
| 1417 | -1, iov, niov) == -1) { |
| 1418 | log_warn("Failed to set config parameter to module `%s': " |
| 1419 | "imsg_composev", module->name); |
| 1420 | goto on_error; |
| 1421 | } |
| 1422 | if (imsg_sync_flush(&module->ibuf, MODULE_IO_TIMEOUT2000) == -1) { |
| 1423 | log_warn("Failed to set config parameter to module `%s': " |
| 1424 | "imsg_flush_timeout", module->name); |
| 1425 | goto on_error; |
| 1426 | } |
| 1427 | for (;;) { |
| 1428 | if (imsg_sync_read(&module->ibuf, MODULE_IO_TIMEOUT2000) <= 0) { |
| 1429 | log_warn("Failed to get reply from module `%s': " |
| 1430 | "imsg_sync_read", module->name); |
| 1431 | goto on_error; |
| 1432 | } |
| 1433 | if ((n = imsg_get(&module->ibuf, &imsg)) > 0) |
| 1434 | break; |
| 1435 | if (n < 0) { |
| 1436 | log_warn("Failed to get reply from module `%s': " |
| 1437 | "imsg_get", module->name); |
| 1438 | goto on_error; |
| 1439 | } |
| 1440 | } |
| 1441 | if (imsg.hdr.type == IMSG_NG) { |
| 1442 | log_warnx("Could not set `%s' for module `%s': %s", name, |
| 1443 | module->name, (char *)imsg.data); |
| 1444 | goto on_error; |
| 1445 | } else if (imsg.hdr.type != IMSG_OK) { |
| 1446 | imsg_free(&imsg); |
| 1447 | log_warnx("Failed to get reply from module `%s': " |
| 1448 | "unknown imsg type=%d", module->name, imsg.hdr.type); |
| 1449 | goto on_error; |
| 1450 | } |
| 1451 | imsg_free(&imsg); |
| 1452 | |
| 1453 | free(buf); |
| 1454 | return (0); |
| 1455 | |
| 1456 | on_error: |
| 1457 | free(buf); |
| 1458 | return (-1); |
| 1459 | } |
| 1460 | |
| 1461 | static void |
| 1462 | radiusd_module_userpass(struct radiusd_module *module, struct radius_query *q) |
| 1463 | { |
| 1464 | struct radiusd_module_userpass_arg userpass; |
| 1465 | |
| 1466 | memset(&userpass, 0, sizeof(userpass)); |
| 1467 | userpass.q_id = q->id; |
| 1468 | |
| 1469 | if (radius_get_user_password_attr(q->req, userpass.pass, |
| 1470 | sizeof(userpass.pass), q->client->secret) == 0) |
| 1471 | userpass.has_pass = true1; |
| 1472 | else |
| 1473 | userpass.has_pass = false0; |
| 1474 | if (radius_get_string_attr(q->req, RADIUS_TYPE_USER_NAME1, |
| 1475 | userpass.user, sizeof(userpass.user)) != 0) { |
| 1476 | log_warnx("q=%u no User-Name attribute", q->id); |
| 1477 | goto on_error; |
| 1478 | } |
| 1479 | imsg_compose(&module->ibuf, IMSG_RADIUSD_MODULE_USERPASS, 0, 0, -1, |
| 1480 | &userpass, sizeof(userpass)); |
| 1481 | radiusd_module_reset_ev_handler(module); |
| 1482 | return; |
| 1483 | on_error: |
| 1484 | radiusd_access_request_aborted(q); |
| 1485 | } |
| 1486 | |
| 1487 | static void |
| 1488 | radiusd_module_access_request(struct radiusd_module *module, |
| 1489 | struct radius_query *q) |
| 1490 | { |
| 1491 | RADIUS_PACKET *radpkt; |
| 1492 | char pass[256]; |
| 1493 | |
| 1494 | if ((radpkt = radius_convert_packet(radius_get_data(q->req), |
| 1495 | radius_get_length(q->req))) == NULL((void *)0)) { |
| 1496 | log_warn("q=%u Could not send ACCSREQ to `%s'", q->id, |
| 1497 | module->name); |
| 1498 | radiusd_access_request_aborted(q); |
| 1499 | return; |
| 1500 | } |
| 1501 | if (q->client->secret[0] != '\0' && module->secret != NULL((void *)0) && |
| 1502 | radius_get_user_password_attr(radpkt, pass, sizeof(pass), |
| 1503 | q->client->secret) == 0) { |
| 1504 | radius_del_attr_all(radpkt, RADIUS_TYPE_USER_PASSWORD2); |
| 1505 | (void)radius_put_raw_attr(radpkt, RADIUS_TYPE_USER_PASSWORD2, |
| 1506 | pass, strlen(pass)); |
| 1507 | } |
| 1508 | if (imsg_compose_radius_packet(&module->ibuf, |
| 1509 | IMSG_RADIUSD_MODULE_ACCSREQ, q->id, radpkt) == -1) { |
| 1510 | log_warn("q=%u Could not send ACCSREQ to `%s'", q->id, |
| 1511 | module->name); |
| 1512 | radiusd_access_request_aborted(q); |
| 1513 | } |
| 1514 | radiusd_module_reset_ev_handler(module); |
| 1515 | radius_delete_packet(radpkt); |
| 1516 | } |
| 1517 | |
| 1518 | static void |
| 1519 | radiusd_module_request_decoration(struct radiusd_module *module, |
| 1520 | struct radius_query *q) |
| 1521 | { |
| 1522 | if (module->fd < 0) { |
| 1523 | log_warnx("q=%u Could not send REQDECO to `%s': module is " |
| 1524 | "not running?", q->id, module->name); |
| 1525 | radiusd_access_request_aborted(q); |
| 1526 | return; |
| 1527 | } |
| 1528 | if (imsg_compose_radius_packet(&module->ibuf, |
| 1529 | IMSG_RADIUSD_MODULE_REQDECO, q->id, q->req) == -1) { |
| 1530 | log_warn("q=%u Could not send REQDECO to `%s'", q->id, |
| 1531 | module->name); |
| 1532 | radiusd_access_request_aborted(q); |
| 1533 | return; |
| 1534 | } |
| 1535 | radiusd_module_reset_ev_handler(module); |
| 1536 | } |
| 1537 | |
| 1538 | static void |
| 1539 | radiusd_module_response_decoration(struct radiusd_module *module, |
| 1540 | struct radius_query *q) |
| 1541 | { |
| 1542 | if (module->fd < 0) { |
| 1543 | log_warnx("q=%u Could not send RESDECO to `%s': module is " |
| 1544 | "not running?", q->id, module->name); |
| 1545 | radiusd_access_request_aborted(q); |
| 1546 | return; |
| 1547 | } |
| 1548 | if (imsg_compose_radius_packet(&module->ibuf, |
| 1549 | IMSG_RADIUSD_MODULE_RESDECO0_REQ, q->id, q->req) == -1) { |
| 1550 | log_warn("q=%u Could not send RESDECO0_REQ to `%s'", q->id, |
| 1551 | module->name); |
| 1552 | radiusd_access_request_aborted(q); |
| 1553 | return; |
| 1554 | } |
| 1555 | if (imsg_compose_radius_packet(&module->ibuf, |
| 1556 | IMSG_RADIUSD_MODULE_RESDECO, q->id, q->res) == -1) { |
| 1557 | log_warn("q=%u Could not send RESDECO to `%s'", q->id, |
| 1558 | module->name); |
| 1559 | radiusd_access_request_aborted(q); |
| 1560 | return; |
| 1561 | } |
| 1562 | radiusd_module_reset_ev_handler(module); |
| 1563 | } |
| 1564 | |
| 1565 | static int |
| 1566 | imsg_compose_radius_packet(struct imsgbuf *ibuf, uint32_t type, u_int q_id, |
| 1567 | RADIUS_PACKET *radpkt) |
| 1568 | { |
| 1569 | struct radiusd_module_radpkt_arg arg; |
| 1570 | int off = 0, len, siz; |
| 1571 | struct iovec iov[2]; |
| 1572 | const u_char *pkt; |
| 1573 | |
| 1574 | pkt = radius_get_data(radpkt); |
| 1575 | len = radius_get_length(radpkt); |
| 1576 | memset(&arg, 0, sizeof(arg)); |
| 1577 | arg.q_id = q_id; |
| 1578 | arg.pktlen = len; |
| 1579 | while (off < len) { |
| 1580 | siz = MAX_IMSGSIZE16384 - sizeof(arg); |
| 1581 | if (len - off > siz) |
| 1582 | arg.final = false0; |
| 1583 | else { |
| 1584 | arg.final = true1; |
| 1585 | siz = len - off; |
| 1586 | } |
| 1587 | iov[0].iov_base = &arg; |
| 1588 | iov[0].iov_len = sizeof(arg); |
| 1589 | iov[1].iov_base = (caddr_t)pkt + off; |
| 1590 | iov[1].iov_len = siz; |
| 1591 | if (imsg_composev(ibuf, type, 0, 0, -1, iov, 2) == -1) |
| 1592 | return (-1); |
| 1593 | off += siz; |
| 1594 | } |
| 1595 | return (0); |
| 1596 | } |