diff options
Diffstat (limited to 'radsecproxy.c')
| -rw-r--r-- | radsecproxy.c | 3261 |
1 files changed, 0 insertions, 3261 deletions
diff --git a/radsecproxy.c b/radsecproxy.c deleted file mode 100644 index 2276d40..0000000 --- a/radsecproxy.c +++ /dev/null @@ -1,3261 +0,0 @@ -/* - * Copyright (C) 2006-2009 Stig Venaas <venaas@uninett.no> - * - * Permission to use, copy, modify, and distribute this software for any - * purpose with or without fee is hereby granted, provided that the above - * copyright notice and this permission notice appear in all copies. - */ - -/* Code contributions from: - * - * Arne Schwabe <schwabe at uni-paderborn.de> - * Maja Wolniewicz <mgw@umk.pl> - * Simon Leinen <simon.leinen@switch.ch> - * Stefan Winter <stefan.winter@restena.lu> - */ - -/* For UDP there is one server instance consisting of udpserverrd and udpserverth - * rd is responsible for init and launching wr - * For TLS there is a server instance that launches tlsserverrd for each TLS peer - * each tlsserverrd launches tlsserverwr - * For each UDP/TLS peer there is clientrd and clientwr, clientwr is responsible - * for init and launching rd - * - * serverrd will receive a request, processes it and puts it in the requestq of - * the appropriate clientwr - * clientwr monitors its requestq and sends requests - * clientrd looks for responses, processes them and puts them in the replyq of - * the peer the request came from - * serverwr monitors its reply and sends replies - * - * In addition to the main thread, we have: - * If UDP peers are configured, there will be 2 + 2 * #peers UDP threads - * If TLS peers are configured, there will initially be 2 * #peers TLS threads - * For each TLS peer connecting to us there will be 2 more TLS threads - * This is only for connected peers - * Example: With 3 UDP peers and 30 TLS peers, there will be a max of - * 1 + (2 + 2 * 3) + (2 * 30) + (2 * 30) = 129 threads - */ - -/* Bugs: - * May segfault when dtls connections go down? More testing needed - * Remove expired stuff from clients request list? - * Multiple outgoing connections if not enough IDs? (multiple servers per conf?) - * Useful for TCP accounting? Now we require separate server config for alt port - */ - -#include <signal.h> -#include <sys/socket.h> -#include <netinet/in.h> -#include <netdb.h> -#include <string.h> -#include <unistd.h> -#include <limits.h> -#ifdef SYS_SOLARIS9 -#include <fcntl.h> -#endif -#include <sys/time.h> -#include <sys/types.h> -#include <ctype.h> -#include <sys/wait.h> -#include <arpa/inet.h> -#include <regex.h> -#include <libgen.h> -#include <pthread.h> -#include <errno.h> -#include <openssl/ssl.h> -#include <openssl/rand.h> -#include <openssl/err.h> -#include <openssl/md5.h> -#include "debug.h" -#include "list.h" -#include "hash.h" -#include "util.h" -#include "hostport.h" -#include "radsecproxy.h" -#include "udp.h" -#include "tcp.h" -#include "tls.h" -#include "dtls.h" - -static struct options options; -static struct list *clconfs, *srvconfs; -static struct list *realms; -static struct hash *rewriteconfs; - -static pthread_mutex_t *ssl_locks = NULL; -static long *ssl_lock_count; -extern int optind; -extern char *optarg; -static const struct protodefs *protodefs[RAD_PROTOCOUNT]; - -/* minimum required declarations to avoid reordering code */ -struct realm *adddynamicrealmserver(struct realm *realm, char *id); -int dynamicconfig(struct server *server); -int confserver_cb(struct gconffile **cf, void *arg, char *block, char *opt, char *val); -void freerealm(struct realm *realm); -void freeclsrvconf(struct clsrvconf *conf); -void freerq(struct request *rq); -void freerqoutdata(struct rqout *rqout); -void rmclientrq(struct request *rq, uint8_t id); - -static const struct protodefs *(*protoinits[])(uint8_t) = { udpinit, tlsinit, tcpinit, dtlsinit }; - -uint8_t protoname2int(const char *name) { - uint8_t i; - - for (i = 0; i < RAD_PROTOCOUNT; i++) - if (protodefs[i] && protodefs[i]->name && !strcasecmp(protodefs[i]->name, name)) - return i; - return 255; -} - -/* callbacks for making OpenSSL thread safe */ -unsigned long ssl_thread_id() { - return (unsigned long)pthread_self(); -} - -void ssl_locking_callback(int mode, int type, const char *file, int line) { - if (mode & CRYPTO_LOCK) { - pthread_mutex_lock(&ssl_locks[type]); - ssl_lock_count[type]++; - } else - pthread_mutex_unlock(&ssl_locks[type]); -} - -/* returns 1 if the len first bits are equal, else 0 */ -int prefixmatch(void *a1, void *a2, uint8_t len) { - static uint8_t mask[] = { 0, 0x80, 0xc0, 0xe0, 0xf0, 0xf8, 0xfc, 0xfe }; - uint8_t r, l = len / 8; - if (l && memcmp(a1, a2, l)) - return 0; - r = len % 8; - if (!r) - return 1; - return (((uint8_t *)a1)[l] & mask[r]) == (((uint8_t *)a2)[l] & mask[r]); -} - -/* returns next config with matching address, or NULL */ -struct clsrvconf *find_conf(uint8_t type, struct sockaddr *addr, struct list *confs, struct list_node **cur, uint8_t server_p) { - struct list_node *entry; - struct clsrvconf *conf; - - for (entry = (cur && *cur ? list_next(*cur) : list_first(confs)); entry; entry = list_next(entry)) { - conf = (struct clsrvconf *)entry->data; - if (conf->type == type && addressmatches(conf->hostports, addr, server_p)) { - if (cur) - *cur = entry; - return conf; - } - } - return NULL; -} - -struct clsrvconf *find_clconf(uint8_t type, struct sockaddr *addr, struct list_node **cur) { - return find_conf(type, addr, clconfs, cur, 0); -} - -struct clsrvconf *find_srvconf(uint8_t type, struct sockaddr *addr, struct list_node **cur) { - return find_conf(type, addr, srvconfs, cur, 1); -} - -/* returns next config of given type, or NULL */ -struct clsrvconf *find_clconf_type(uint8_t type, struct list_node **cur) { - struct list_node *entry; - struct clsrvconf *conf; - - for (entry = (cur && *cur ? list_next(*cur) : list_first(clconfs)); entry; entry = list_next(entry)) { - conf = (struct clsrvconf *)entry->data; - if (conf->type == type) { - if (cur) - *cur = entry; - return conf; - } - } - return NULL; -} - -struct gqueue *newqueue() { - struct gqueue *q; - - q = malloc(sizeof(struct gqueue)); - if (!q) - debugx(1, DBG_ERR, "malloc failed"); - q->entries = list_create(); - if (!q->entries) - debugx(1, DBG_ERR, "malloc failed"); - pthread_mutex_init(&q->mutex, NULL); - pthread_cond_init(&q->cond, NULL); - return q; -} - -void removequeue(struct gqueue *q) { - struct list_node *entry; - - if (!q) - return; - pthread_mutex_lock(&q->mutex); - for (entry = list_first(q->entries); entry; entry = list_next(entry)) - freerq((struct request *)entry); - list_destroy(q->entries); - pthread_cond_destroy(&q->cond); - pthread_mutex_unlock(&q->mutex); - pthread_mutex_destroy(&q->mutex); - free(q); -} - -void freebios(struct gqueue *q) { - BIO *bio; - - pthread_mutex_lock(&q->mutex); - while ((bio = (BIO *)list_shift(q->entries))) - BIO_free(bio); - pthread_mutex_unlock(&q->mutex); - removequeue(q); -} - -struct client *addclient(struct clsrvconf *conf, uint8_t lock) { - struct client *new = malloc(sizeof(struct client)); - - if (!new) { - debug(DBG_ERR, "malloc failed"); - return NULL; - } - - if (lock) - pthread_mutex_lock(conf->lock); - if (!conf->clients) { - conf->clients = list_create(); - if (!conf->clients) { - if (lock) - pthread_mutex_unlock(conf->lock); - debug(DBG_ERR, "malloc failed"); - return NULL; - } - } - - memset(new, 0, sizeof(struct client)); - new->conf = conf; - if (conf->pdef->addclient) - conf->pdef->addclient(new); - else - new->replyq = newqueue(); - list_push(conf->clients, new); - if (lock) - pthread_mutex_unlock(conf->lock); - return new; -} - -void removeclientrqs_sendrq_freeserver_lock(uint8_t wantlock) { - static pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER; - - if (wantlock) - pthread_mutex_lock(&lock); - else - pthread_mutex_unlock(&lock); -} - -void removeclientrqs(struct client *client) { - struct request *rq; - struct rqout *rqout; - int i; - - removeclientrqs_sendrq_freeserver_lock(1); - for (i = 0; i < MAX_REQUESTS; i++) { - rq = client->rqs[i]; - if (!rq) - continue; - if (rq->to) { - rqout = rq->to->requests + rq->newid; - pthread_mutex_lock(rqout->lock); - if (rqout->rq == rq) /* still pointing to our request */ - freerqoutdata(rqout); - pthread_mutex_unlock(rqout->lock); - } - freerq(rq); - } - removeclientrqs_sendrq_freeserver_lock(0); -} - -void removelockedclient(struct client *client) { - struct clsrvconf *conf; - - conf = client->conf; - if (conf->clients) { - removeclientrqs(client); - removequeue(client->replyq); - list_removedata(conf->clients, client); - free(client->addr); - free(client); - } -} - -void removeclient(struct client *client) { - struct clsrvconf *conf; - - if (!client) - return; - - conf = client->conf; - pthread_mutex_lock(conf->lock); - removelockedclient(client); - pthread_mutex_unlock(conf->lock); -} - -void freeserver(struct server *server, uint8_t destroymutex) { - struct rqout *rqout, *end; - - if (!server) - return; - - removeclientrqs_sendrq_freeserver_lock(1); - if (server->requests) { - rqout = server->requests; - for (end = rqout + MAX_REQUESTS; rqout < end; rqout++) { - if (rqout->rq) - rqout->rq->to = NULL; - freerqoutdata(rqout); - pthread_mutex_destroy(rqout->lock); - free(rqout->lock); - } - free(server->requests); - } - if (server->rbios) - freebios(server->rbios); - free(server->dynamiclookuparg); - if (server->ssl) - SSL_free(server->ssl); - if (destroymutex) { - pthread_mutex_destroy(&server->lock); - pthread_cond_destroy(&server->newrq_cond); - pthread_mutex_destroy(&server->newrq_mutex); - } - removeclientrqs_sendrq_freeserver_lock(0); - free(server); -} - -int addserver(struct clsrvconf *conf) { - int i; - - if (conf->servers) { - debug(DBG_ERR, "addserver: currently works with just one server per conf"); - return 0; - } - conf->servers = malloc(sizeof(struct server)); - if (!conf->servers) { - debug(DBG_ERR, "malloc failed"); - return 0; - } - memset(conf->servers, 0, sizeof(struct server)); - conf->servers->conf = conf; - -#ifdef RADPROT_DTLS - if (conf->type == RAD_DTLS) - conf->servers->rbios = newqueue(); -#endif - conf->pdef->setsrcres(); - - conf->servers->sock = -1; - if (conf->pdef->addserverextra) - conf->pdef->addserverextra(conf); - - conf->servers->requests = calloc(MAX_REQUESTS, sizeof(struct rqout)); - if (!conf->servers->requests) { - debug(DBG_ERR, "malloc failed"); - goto errexit; - } - for (i = 0; i < MAX_REQUESTS; i++) { - conf->servers->requests[i].lock = malloc(sizeof(pthread_mutex_t)); - if (!conf->servers->requests[i].lock) { - debug(DBG_ERR, "malloc failed"); - goto errexit; - } - if (pthread_mutex_init(conf->servers->requests[i].lock, NULL)) { - debugerrno(errno, DBG_ERR, "mutex init failed"); - free(conf->servers->requests[i].lock); - conf->servers->requests[i].lock = NULL; - goto errexit; - } - } - if (pthread_mutex_init(&conf->servers->lock, NULL)) { - debugerrno(errno, DBG_ERR, "mutex init failed"); - goto errexit; - } - conf->servers->newrq = 0; - if (pthread_mutex_init(&conf->servers->newrq_mutex, NULL)) { - debugerrno(errno, DBG_ERR, "mutex init failed"); - pthread_mutex_destroy(&conf->servers->lock); - goto errexit; - } - if (pthread_cond_init(&conf->servers->newrq_cond, NULL)) { - debugerrno(errno, DBG_ERR, "mutex init failed"); - pthread_mutex_destroy(&conf->servers->newrq_mutex); - pthread_mutex_destroy(&conf->servers->lock); - goto errexit; - } - - return 1; - -errexit: - freeserver(conf->servers, 0); - conf->servers = NULL; - return 0; -} - -unsigned char *attrget(unsigned char *attrs, int length, uint8_t type) { - while (length > 1) { - if (ATTRTYPE(attrs) == type) - return attrs; - length -= ATTRLEN(attrs); - attrs += ATTRLEN(attrs); - } - return NULL; -} - -struct request *newrqref(struct request *rq) { - if (rq) - rq->refcount++; - return rq; -} - -void freerq(struct request *rq) { - if (!rq) - return; - debug(DBG_DBG, "freerq: called with refcount %d", rq->refcount); - if (--rq->refcount) - return; - if (rq->origusername) - free(rq->origusername); - if (rq->buf) - free(rq->buf); - if (rq->replybuf) - free(rq->replybuf); - if (rq->msg) - radmsg_free(rq->msg); - free(rq); -} - -void freerqoutdata(struct rqout *rqout) { - if (!rqout) - return; - if (rqout->rq) { - if (rqout->rq->buf) { - free(rqout->rq->buf); - rqout->rq->buf = NULL; - } - freerq(rqout->rq); - rqout->rq = NULL; - } - rqout->tries = 0; - memset(&rqout->expiry, 0, sizeof(struct timeval)); -} - -void sendrq(struct request *rq) { - int i, start; - struct server *to; - - removeclientrqs_sendrq_freeserver_lock(1); - to = rq->to; - if (!to) - goto errexit; - - start = to->conf->statusserver ? 1 : 0; - pthread_mutex_lock(&to->newrq_mutex); - if (start && rq->msg->code == RAD_Status_Server) { - pthread_mutex_lock(to->requests[0].lock); - if (to->requests[0].rq) { - pthread_mutex_unlock(to->requests[0].lock); - debug(DBG_INFO, "sendrq: status server already in queue, dropping request"); - goto errexit; - } - i = 0; - } else { - if (!to->nextid) - to->nextid = start; - /* might simplify if only try nextid, might be ok */ - for (i = to->nextid; i < MAX_REQUESTS; i++) { - if (!to->requests[i].rq) { - pthread_mutex_lock(to->requests[i].lock); - if (!to->requests[i].rq) - break; - pthread_mutex_unlock(to->requests[i].lock); - } - } - if (i == MAX_REQUESTS) { - for (i = start; i < to->nextid; i++) { - if (!to->requests[i].rq) { - pthread_mutex_lock(to->requests[i].lock); - if (!to->requests[i].rq) - break; - pthread_mutex_unlock(to->requests[i].lock); - } - } - if (i == to->nextid) { - debug(DBG_INFO, "sendrq: no room in queue, dropping request"); - goto errexit; - } - } - } - rq->newid = (uint8_t)i; - rq->msg->id = (uint8_t)i; - rq->buf = radmsg2buf(rq->msg, (uint8_t *)to->conf->secret); - if (!rq->buf) { - pthread_mutex_unlock(to->requests[i].lock); - debug(DBG_ERR, "sendrq: radmsg2buf failed"); - goto errexit; - } - - debug(DBG_DBG, "sendrq: inserting packet with id %d in queue for %s", i, to->conf->name); - to->requests[i].rq = rq; - pthread_mutex_unlock(to->requests[i].lock); - if (i >= start) /* i is not reserved for statusserver */ - to->nextid = i + 1; - - if (!to->newrq) { - to->newrq = 1; - debug(DBG_DBG, "sendrq: signalling client writer"); - pthread_cond_signal(&to->newrq_cond); - } - - pthread_mutex_unlock(&to->newrq_mutex); - removeclientrqs_sendrq_freeserver_lock(0); - return; - -errexit: - if (rq->from) - rmclientrq(rq, rq->msg->id); - freerq(rq); - pthread_mutex_unlock(&to->newrq_mutex); - removeclientrqs_sendrq_freeserver_lock(0); -} - -void sendreply(struct request *rq) { - uint8_t first; - struct client *to = rq->from; - - if (!rq->replybuf) - rq->replybuf = radmsg2buf(rq->msg, (uint8_t *)to->conf->secret); - radmsg_free(rq->msg); - rq->msg = NULL; - if (!rq->replybuf) { - freerq(rq); - debug(DBG_ERR, "sendreply: radmsg2buf failed"); - return; - } - - pthread_mutex_lock(&to->replyq->mutex); - first = list_first(to->replyq->entries) == NULL; - - if (!list_push(to->replyq->entries, rq)) { - pthread_mutex_unlock(&to->replyq->mutex); - freerq(rq); - debug(DBG_ERR, "sendreply: malloc failed"); - return; - } - - if (first) { - debug(DBG_DBG, "signalling server writer"); - pthread_cond_signal(&to->replyq->cond); - } - pthread_mutex_unlock(&to->replyq->mutex); -} - -int pwdcrypt(char encrypt_flag, uint8_t *in, uint8_t len, char *shared, uint8_t sharedlen, uint8_t *auth) { - static pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER; - static unsigned char first = 1; - static EVP_MD_CTX mdctx; - unsigned char hash[EVP_MAX_MD_SIZE], *input; - unsigned int md_len; - uint8_t i, offset = 0, out[128]; - - pthread_mutex_lock(&lock); - if (first) { - EVP_MD_CTX_init(&mdctx); - first = 0; - } - - input = auth; - for (;;) { - if (!EVP_DigestInit_ex(&mdctx, EVP_md5(), NULL) || - !EVP_DigestUpdate(&mdctx, (uint8_t *)shared, sharedlen) || - !EVP_DigestUpdate(&mdctx, input, 16) || - !EVP_DigestFinal_ex(&mdctx, hash, &md_len) || - md_len != 16) { - pthread_mutex_unlock(&lock); - return 0; - } - for (i = 0; i < 16; i++) - out[offset + i] = hash[i] ^ in[offset + i]; - if (encrypt_flag) - input = out + offset; - else - input = in + offset; - offset += 16; - if (offset == len) - break; - } - memcpy(in, out, len); - pthread_mutex_unlock(&lock); - return 1; -} - -int msmppencrypt(uint8_t *text, uint8_t len, uint8_t *shared, uint8_t sharedlen, uint8_t *auth, uint8_t *salt) { - static pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER; - static unsigned char first = 1; - static EVP_MD_CTX mdctx; - unsigned char hash[EVP_MAX_MD_SIZE]; - unsigned int md_len; - uint8_t i, offset; - - pthread_mutex_lock(&lock); - if (first) { - EVP_MD_CTX_init(&mdctx); - first = 0; - } - -#if 0 - printfchars(NULL, "msppencrypt auth in", "%02x ", auth, 16); - printfchars(NULL, "msppencrypt salt in", "%02x ", salt, 2); - printfchars(NULL, "msppencrypt in", "%02x ", text, len); -#endif - - if (!EVP_DigestInit_ex(&mdctx, EVP_md5(), NULL) || - !EVP_DigestUpdate(&mdctx, shared, sharedlen) || - !EVP_DigestUpdate(&mdctx, auth, 16) || - !EVP_DigestUpdate(&mdctx, salt, 2) || - !EVP_DigestFinal_ex(&mdctx, hash, &md_len)) { - pthread_mutex_unlock(&lock); - return 0; - } - -#if 0 - printfchars(NULL, "msppencrypt hash", "%02x ", hash, 16); -#endif - - for (i = 0; i < 16; i++) - text[i] ^= hash[i]; - - for (offset = 16; offset < len; offset += 16) { -#if 0 - printf("text + offset - 16 c(%d): ", offset / 16); - printfchars(NULL, NULL, "%02x ", text + offset - 16, 16); -#endif - if (!EVP_DigestInit_ex(&mdctx, EVP_md5(), NULL) || - !EVP_DigestUpdate(&mdctx, shared, sharedlen) || - !EVP_DigestUpdate(&mdctx, text + offset - 16, 16) || - !EVP_DigestFinal_ex(&mdctx, hash, &md_len) || - md_len != 16) { - pthread_mutex_unlock(&lock); - return 0; - } -#if 0 - printfchars(NULL, "msppencrypt hash", "%02x ", hash, 16); -#endif - - for (i = 0; i < 16; i++) - text[offset + i] ^= hash[i]; - } - -#if 0 - printfchars(NULL, "msppencrypt out", "%02x ", text, len); -#endif - - pthread_mutex_unlock(&lock); - return 1; -} - -int msmppdecrypt(uint8_t *text, uint8_t len, uint8_t *shared, uint8_t sharedlen, uint8_t *auth, uint8_t *salt) { - static pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER; - static unsigned char first = 1; - static EVP_MD_CTX mdctx; - unsigned char hash[EVP_MAX_MD_SIZE]; - unsigned int md_len; - uint8_t i, offset; - char plain[255]; - - pthread_mutex_lock(&lock); - if (first) { - EVP_MD_CTX_init(&mdctx); - first = 0; - } - -#if 0 - printfchars(NULL, "msppdecrypt auth in", "%02x ", auth, 16); - printfchars(NULL, "msppdecrypt salt in", "%02x ", salt, 2); - printfchars(NULL, "msppdecrypt in", "%02x ", text, len); -#endif - - if (!EVP_DigestInit_ex(&mdctx, EVP_md5(), NULL) || - !EVP_DigestUpdate(&mdctx, shared, sharedlen) || - !EVP_DigestUpdate(&mdctx, auth, 16) || - !EVP_DigestUpdate(&mdctx, salt, 2) || - !EVP_DigestFinal_ex(&mdctx, hash, &md_len)) { - pthread_mutex_unlock(&lock); - return 0; - } - -#if 0 - printfchars(NULL, "msppdecrypt hash", "%02x ", hash, 16); -#endif - - for (i = 0; i < 16; i++) - plain[i] = text[i] ^ hash[i]; - - for (offset = 16; offset < len; offset += 16) { -#if 0 - printf("text + offset - 16 c(%d): ", offset / 16); - printfchars(NULL, NULL, "%02x ", text + offset - 16, 16); -#endif - if (!EVP_DigestInit_ex(&mdctx, EVP_md5(), NULL) || - !EVP_DigestUpdate(&mdctx, shared, sharedlen) || - !EVP_DigestUpdate(&mdctx, text + offset - 16, 16) || - !EVP_DigestFinal_ex(&mdctx, hash, &md_len) || - md_len != 16) { - pthread_mutex_unlock(&lock); - return 0; - } -#if 0 - printfchars(NULL, "msppdecrypt hash", "%02x ", hash, 16); -#endif - - for (i = 0; i < 16; i++) - plain[offset + i] = text[offset + i] ^ hash[i]; - } - - memcpy(text, plain, len); -#if 0 - printfchars(NULL, "msppdecrypt out", "%02x ", text, len); -#endif - - pthread_mutex_unlock(&lock); - return 1; -} - -struct realm *newrealmref(struct realm *r) { - if (r) - r->refcount++; - return r; -} - -/* returns with lock on realm */ -struct realm *id2realm(struct list *realmlist, char *id) { - struct list_node *entry; - struct realm *realm, *subrealm; - - /* need to do locking for subrealms and check subrealm timers */ - for (entry = list_first(realmlist); entry; entry = list_next(entry)) { - realm = (struct realm *)entry->data; - if (!regexec(&realm->regex, id, 0, NULL, 0)) { - pthread_mutex_lock(&realm->mutex); - if (realm->subrealms) { - subrealm = id2realm(realm->subrealms, id); - if (subrealm) { - pthread_mutex_unlock(&realm->mutex); - return subrealm; - } - } - return newrealmref(realm); - } - } - return NULL; -} - -int hasdynamicserver(struct list *srvconfs) { - struct list_node *entry; - - for (entry = list_first(srvconfs); entry; entry = list_next(entry)) - if (((struct clsrvconf *)entry->data)->dynamiclookupcommand) - return 1; - return 0; -} - -/* helper function, only used by removeserversubrealms() */ -void _internal_removeserversubrealms(struct list *realmlist, struct clsrvconf *srv) { - struct list_node *entry, *entry2; - struct realm *realm; - - for (entry = list_first(realmlist); entry;) { - realm = newrealmref((struct realm *)entry->data); - pthread_mutex_lock(&realm->mutex); - entry = list_next(entry); - - if (realm->srvconfs) { - for (entry2 = list_first(realm->srvconfs); entry2; entry2 = list_next(entry2)) - if (entry2->data == srv) - freerealm(realm); - list_removedata(realm->srvconfs, srv); - } - if (realm->accsrvconfs) { - for (entry2 = list_first(realm->accsrvconfs); entry2; entry2 = list_next(entry2)) - if (entry2->data == srv) - freerealm(realm); - list_removedata(realm->accsrvconfs, srv); - } - - /* remove subrealm if no dynamic servers left */ - if (!hasdynamicserver(realm->srvconfs) && !hasdynamicserver(realm->accsrvconfs)) { - while (list_shift(realm->srvconfs)) - freerealm(realm); - list_destroy(realm->srvconfs); - realm->srvconfs = NULL; - while (list_shift(realm->accsrvconfs)) - freerealm(realm); - list_destroy(realm->accsrvconfs); - realm->accsrvconfs = NULL; - list_removedata(realmlist, realm); - } - pthread_mutex_unlock(&realm->mutex); - freerealm(realm); - } -} - -void removeserversubrealms(struct list *realmlist, struct clsrvconf *srv) { - struct list_node *entry; - struct realm *realm; - - for (entry = list_first(realmlist); entry; entry = list_next(entry)) { - realm = (struct realm *)entry->data; - pthread_mutex_lock(&realm->mutex); - if (realm->subrealms) { - _internal_removeserversubrealms(realm->subrealms, srv); - if (!list_first(realm->subrealms)) { - list_destroy(realm->subrealms); - realm->subrealms = NULL; - } - } - pthread_mutex_unlock(&realm->mutex); - } -} - -int attrvalidate(unsigned char *attrs, int length) { - while (length > 1) { - if (ATTRLEN(attrs) < 2) { - debug(DBG_INFO, "attrvalidate: invalid attribute length %d", ATTRLEN(attrs)); - return 0; - } - length -= ATTRLEN(attrs); - if (length < 0) { - debug(DBG_INFO, "attrvalidate: attribute length %d exceeds packet length", ATTRLEN(attrs)); - return 0; - } - attrs += ATTRLEN(attrs); - } - if (length) - debug(DBG_INFO, "attrvalidate: malformed packet? remaining byte after last attribute"); - return 1; -} - -int pwdrecrypt(uint8_t *pwd, uint8_t len, char *oldsecret, char *newsecret, uint8_t *oldauth, uint8_t *newauth) { - if (len < 16 || len > 128 || len % 16) { - debug(DBG_WARN, "pwdrecrypt: invalid password length"); - return 0; - } - - if (!pwdcrypt(0, pwd, len, oldsecret, strlen(oldsecret), oldauth)) { - debug(DBG_WARN, "pwdrecrypt: cannot decrypt password"); - return 0; - } -#ifdef DEBUG - printfchars(NULL, "pwdrecrypt: password", "%02x ", pwd, len); -#endif - if (!pwdcrypt(1, pwd, len, newsecret, strlen(newsecret), newauth)) { - debug(DBG_WARN, "pwdrecrypt: cannot encrypt password"); - return 0; - } - return 1; -} - -int msmpprecrypt(uint8_t *msmpp, uint8_t len, char *oldsecret, char *newsecret, uint8_t *oldauth, uint8_t *newauth) { - if (len < 18) - return 0; - if (!msmppdecrypt(msmpp + 2, len - 2, (uint8_t *)oldsecret, strlen(oldsecret), oldauth, msmpp)) { - debug(DBG_WARN, "msmpprecrypt: failed to decrypt msppe key"); - return 0; - } - if (!msmppencrypt(msmpp + 2, len - 2, (uint8_t *)newsecret, strlen(newsecret), newauth, msmpp)) { - debug(DBG_WARN, "msmpprecrypt: failed to encrypt msppe key"); - return 0; - } - return 1; -} - -int msmppe(unsigned char *attrs, int length, uint8_t type, char *attrtxt, struct request *rq, - char *oldsecret, char *newsecret) { - unsigned char *attr; - - for (attr = attrs; (attr = attrget(attr, length - (attr - attrs), type)); attr += ATTRLEN(attr)) { - debug(DBG_DBG, "msmppe: Got %s", attrtxt); - if (!msmpprecrypt(ATTRVAL(attr), ATTRVALLEN(attr), oldsecret, newsecret, rq->buf + 4, rq->rqauth)) - return 0; - } - return 1; -} - -int findvendorsubattr(uint32_t *attrs, uint32_t vendor, uint32_t subattr) { - if (!attrs) - return 0; - - for (; attrs[0]; attrs += 2) - if (attrs[0] == vendor && attrs[1] == subattr) - return 1; - return 0; -} - -/* returns 1 if entire element is to be removed, else 0 */ -int dovendorrewriterm(struct tlv *attr, uint32_t *removevendorattrs) { - uint8_t alen, sublen; - uint32_t vendor; - uint8_t *subattrs; - - if (!removevendorattrs) - return 0; - - memcpy(&vendor, attr->v, 4); - vendor = ntohl(vendor); - while (*removevendorattrs && *removevendorattrs != vendor) - removevendorattrs += 2; - if (!*removevendorattrs) - return 0; - - if (findvendorsubattr(removevendorattrs, vendor, 256)) - return 1; /* remove entire vendor attribute */ - - sublen = attr->l - 4; - subattrs = attr->v + 4; - - if (!attrvalidate(subattrs, sublen)) { - debug(DBG_INFO, "dovendorrewrite: vendor attribute validation failed, no rewrite"); - return 0; - } - - while (sublen > 1) { - alen = ATTRLEN(subattrs); - sublen -= alen; - if (findvendorsubattr(removevendorattrs, vendor, ATTRTYPE(subattrs))) { - memmove(subattrs, subattrs + alen, sublen); - attr->l -= alen; - } else - subattrs += alen; - } - return 0; -} - -void dorewriterm(struct radmsg *msg, uint8_t *rmattrs, uint32_t *rmvattrs) { - struct list_node *n, *p; - struct tlv *attr; - - p = NULL; - n = list_first(msg->attrs); - while (n) { - attr = (struct tlv *)n->data; - if ((rmattrs && strchr((char *)rmattrs, attr->t)) || - (rmvattrs && attr->t == RAD_Attr_Vendor_Specific && dovendorrewriterm(attr, rmvattrs))) { - list_removedata(msg->attrs, attr); - freetlv(attr); - n = p ? list_next(p) : list_first(msg->attrs); - } else { - p = n; - n = list_next(n); - } - } -} - -int dorewriteadd(struct radmsg *msg, struct list *addattrs) { - struct list_node *n; - struct tlv *a; - - for (n = list_first(addattrs); n; n = list_next(n)) { - a = copytlv((struct tlv *)n->data); - if (!a) - return 0; - if (!radmsg_add(msg, a)) { - freetlv(a); - return 0; - } - } - return 1; -} - -int resizeattr(struct tlv *attr, uint8_t newlen) { - uint8_t *newv; - - if (newlen != attr->l) { - newv = realloc(attr->v, newlen); - if (!newv) - return 0; - attr->v = newv; - attr->l = newlen; - } - return 1; -} - -int dorewritemodattr(struct tlv *attr, struct modattr *modattr) { - size_t nmatch = 10, reslen = 0, start = 0; - regmatch_t pmatch[10], *pfield; - int i; - char *in, *out; - - in = stringcopy((char *)attr->v, attr->l); - if (!in) - return 0; - - if (regexec(modattr->regex, in, nmatch, pmatch, 0)) { - free(in); - return 1; - } - - out = modattr->replacement; - - for (i = start; out[i]; i++) { - if (out[i] == '\\' && out[i + 1] >= '1' && out[i + 1] <= '9') { - pfield = &pmatch[out[i + 1] - '0']; - if (pfield->rm_so >= 0) { - reslen += i - start + pfield->rm_eo - pfield->rm_so; - start = i + 2; - } - i++; - } - } - reslen += i - start; - if (reslen > 253) { - debug(DBG_INFO, "rewritten attribute length would be %d, max possible is 253, discarding message", reslen); - free(in); - return 0; - } - - if (!resizeattr(attr, reslen)) { - free(in); - return 0; - } - - start = 0; - reslen = 0; - for (i = start; out[i]; i++) { - if (out[i] == '\\' && out[i + 1] >= '1' && out[i + 1] <= '9') { - pfield = &pmatch[out[i + 1] - '0']; - if (pfield->rm_so >= 0) { - memcpy(attr->v + reslen, out + start, i - start); - reslen += i - start; - memcpy(attr->v + reslen, in + pfield->rm_so, pfield->rm_eo - pfield->rm_so); - reslen += pfield->rm_eo - pfield->rm_so; - start = i + 2; - } - i++; - } - } - - memcpy(attr->v + reslen, out + start, i - start); - return 1; -} - -int dorewritemod(struct radmsg *msg, struct list *modattrs) { - struct list_node *n, *m; - - for (n = list_first(msg->attrs); n; n = list_next(n)) - for (m = list_first(modattrs); m; m = list_next(m)) - if (((struct tlv *)n->data)->t == ((struct modattr *)m->data)->t && - !dorewritemodattr((struct tlv *)n->data, (struct modattr *)m->data)) - return 0; - return 1; -} - -int dorewrite(struct radmsg *msg, struct rewrite *rewrite) { - int rv = 1; /* Success. */ - - if (rewrite) { - if (rewrite->removeattrs || rewrite->removevendorattrs) - dorewriterm(msg, rewrite->removeattrs, rewrite->removevendorattrs); - if (rewrite->modattrs) - if (!dorewritemod(msg, rewrite->modattrs)) - rv = 0; - if (rewrite->addattrs) - if (!dorewriteadd(msg, rewrite->addattrs)) - rv = 0; - } - return rv; -} - -int rewriteusername(struct request *rq, struct tlv *attr) { - char *orig = (char *)tlv2str(attr); - if (!dorewritemodattr(attr, rq->from->conf->rewriteusername)) { - free(orig); - return 0; - } - if (strlen(orig) != attr->l || memcmp(orig, attr->v, attr->l)) - rq->origusername = (char *)orig; - else - free(orig); - return 1; -} - -/** Create vendor specific tlv with ATTR. ATTR is consumed (freed) if - * all is well with the new tlv, i.e. if the function returns - * !NULL. */ -static struct tlv * -makevendortlv(uint32_t vendor, struct tlv *attr) -{ - struct tlv *newtlv = NULL; - uint8_t l, *v; - - if (!attr) - return NULL; - l = attr->l + 6; - v = malloc(l); - if (v) { - vendor = htonl(vendor & 0x00ffffff); /* MSB=0 according to RFC 2865. */ - memcpy(v, &vendor, 4); - tlv2buf(v + 4, attr); - v[5] += 2; /* Vendor length increased for type and length fields. */ - newtlv = maketlv(RAD_Attr_Vendor_Specific, l, v); - if (newtlv == NULL) - free(v); - else - freetlv(attr); - } - return newtlv; -} - -/** Ad vendor attribute with VENDOR + ATTR and push it on MSG. ATTR - * is consumed. */ -int addvendorattr(struct radmsg *msg, uint32_t vendor, struct tlv *attr) { - struct tlv *vattr; - - vattr = makevendortlv(vendor, attr); - if (!vattr) { - freetlv(attr); - return 0; - } - if (!radmsg_add(msg, vattr)) { - freetlv(vattr); - return 0; - } - return 1; -} - -void addttlattr(struct radmsg *msg, uint32_t *attrtype, uint8_t addttl) { - uint8_t ttl[4]; - struct tlv *attr; - - memset(ttl, 0, 4); - ttl[3] = addttl; - - if (attrtype[1] == 256) { /* not vendor */ - attr = maketlv(attrtype[0], 4, ttl); - if (attr && !radmsg_add(msg, attr)) - freetlv(attr); - } else { - attr = maketlv(attrtype[1], 4, ttl); - if (attr) - addvendorattr(msg, attrtype[0], attr); - } -} - -int decttl(uint8_t l, uint8_t *v) { - int i; - - i = l - 1; - if (v[i]) { - if (--v[i--]) - return 1; - while (i >= 0 && !v[i]) - i--; - return i >= 0; - } - for (i--; i >= 0 && !v[i]; i--); - if (i < 0) - return 0; - v[i]--; - while (++i < l) - v[i] = 255; - return 1; -} - -/* returns -1 if no ttl, 0 if exceeded, 1 if ok */ -int checkttl(struct radmsg *msg, uint32_t *attrtype) { - uint8_t alen, *subattrs; - struct tlv *attr; - struct list_node *node; - uint32_t vendor; - int sublen; - - if (attrtype[1] == 256) { /* not vendor */ - attr = radmsg_gettype(msg, attrtype[0]); - if (attr) - return decttl(attr->l, attr->v); - } else - for (node = list_first(msg->attrs); node; node = list_next(node)) { - attr = (struct tlv *)node->data; - if (attr->t != RAD_Attr_Vendor_Specific || attr->l <= 4) - continue; - memcpy(&vendor, attr->v, 4); - if (ntohl(vendor) != attrtype[0]) - continue; - sublen = attr->l - 4; - subattrs = attr->v + 4; - if (!attrvalidate(subattrs, sublen)) - continue; - while (sublen > 1) { - if (ATTRTYPE(subattrs) == attrtype[1]) - return decttl(ATTRVALLEN(subattrs), ATTRVAL(subattrs)); - alen = ATTRLEN(subattrs); - sublen -= alen; - subattrs += alen; - } - } - return -1; -} - -const char *radmsgtype2string(uint8_t code) { - static const char *rad_msg_names[] = { - "", "Access-Request", "Access-Accept", "Access-Reject", - "Accounting-Request", "Accounting-Response", "", "", - "", "", "", "Access-Challenge", - "Status-Server", "Status-Client" - }; - return code < 14 && *rad_msg_names[code] ? rad_msg_names[code] : "Unknown"; -} - -void char2hex(char *h, unsigned char c) { - static const char hexdigits[] = { '0', '1', '2', '3', '4', '5', '6', '7', - '8', '9', 'a', 'b', 'c', 'd', 'e', 'f' }; - h[0] = hexdigits[c / 16]; - h[1] = hexdigits[c % 16]; - return; -} - -uint8_t *radattr2ascii(struct tlv *attr) { - int i, l; - uint8_t *a, *d; - - if (!attr) - return NULL; - - l = attr->l; - for (i = 0; i < attr->l; i++) - if (attr->v[i] < 32 || attr->v[i] > 126) - l += 2; - if (l == attr->l) - return (uint8_t *)stringcopy((char *)attr->v, attr->l); - - a = malloc(l + 1); - if (!a) - return NULL; - - d = a; - for (i = 0; i < attr->l; i++) - if (attr->v[i] < 32 || attr->v[i] > 126) { - *d++ = '%'; - char2hex((char *)d, attr->v[i]); - d += 2; - } else - *d++ = attr->v[i]; - *d = '\0'; - return a; -} - -void acclog(struct radmsg *msg, struct client *from) { - struct tlv *attr; - uint8_t *username; - - attr = radmsg_gettype(msg, RAD_Attr_User_Name); - if (!attr) { - debug(DBG_INFO, "acclog: accounting-request from client %s (%s) without username attribute", from->conf->name, addr2string(from->addr)); - return; - } - username = radattr2ascii(attr); - if (username) { - debug(DBG_INFO, "acclog: accounting-request from client %s (%s) with username: %s", from->conf->name, addr2string(from->addr), username); - - free(username); - } -} - -void respond(struct request *rq, uint8_t code, char *message) { - struct radmsg *msg; - struct tlv *attr; - - msg = radmsg_init(code, rq->msg->id, rq->msg->auth); - if (!msg) { - debug(DBG_ERR, "respond: malloc failed"); - return; - } - if (message && *message) { - attr = maketlv(RAD_Attr_Reply_Message, strlen(message), message); - if (!attr || !radmsg_add(msg, attr)) { - freetlv(attr); - radmsg_free(msg); - debug(DBG_ERR, "respond: malloc failed"); - return; - } - } - - radmsg_free(rq->msg); - rq->msg = msg; - debug(DBG_DBG, "respond: sending %s to %s (%s)", radmsgtype2string(msg->code), rq->from->conf->name, addr2string(rq->from->addr)); - sendreply(newrqref(rq)); -} - -struct clsrvconf *choosesrvconf(struct list *srvconfs) { - struct list_node *entry; - struct clsrvconf *server, *best = NULL, *first = NULL; - - for (entry = list_first(srvconfs); entry; entry = list_next(entry)) { - server = (struct clsrvconf *)entry->data; - if (!server->servers) - return server; - if (!first) - first = server; - if (!server->servers->connectionok && !server->servers->dynstartup) - continue; - if (!server->servers->lostrqs) - return server; - if (!best) { - best = server; - continue; - } - if (server->servers->lostrqs < best->servers->lostrqs) - best = server; - } - return best ? best : first; -} - -/* returns with lock on realm, protects from server changes while in use by radsrv/sendrq */ -struct server *findserver(struct realm **realm, struct tlv *username, uint8_t acc) { - struct clsrvconf *srvconf; - struct realm *subrealm; - struct server *server = NULL; - char *id = (char *)tlv2str(username); - - if (!id) - return NULL; - /* returns with lock on realm */ - *realm = id2realm(realms, id); - if (!*realm) - goto exit; - debug(DBG_DBG, "found matching realm: %s", (*realm)->name); - srvconf = choosesrvconf(acc ? (*realm)->accsrvconfs : (*realm)->srvconfs); - if (srvconf && !(*realm)->parent && !srvconf->servers && srvconf->dynamiclookupcommand) { - subrealm = adddynamicrealmserver(*realm, id); - if (subrealm) { - pthread_mutex_lock(&subrealm->mutex); - pthread_mutex_unlock(&(*realm)->mutex); - freerealm(*realm); - *realm = subrealm; - srvconf = choosesrvconf(acc ? (*realm)->accsrvconfs : (*realm)->srvconfs); - } - } - if (srvconf) - server = srvconf->servers; - -exit: - free(id); - return server; -} - - -struct request *newrequest() { - struct request *rq; - - rq = malloc(sizeof(struct request)); - if (!rq) { - debug(DBG_ERR, "newrequest: malloc failed"); - return NULL; - } - memset(rq, 0, sizeof(struct request)); - rq->refcount = 1; - gettimeofday(&rq->created, NULL); - return rq; -} - -int addclientrq(struct request *rq) { - struct request *r; - struct timeval now; - - r = rq->from->rqs[rq->rqid]; - if (r) { - if (rq->udpport == r->udpport && !memcmp(rq->rqauth, r->rqauth, 16)) { - gettimeofday(&now, NULL); - if (now.tv_sec - r->created.tv_sec < r->from->conf->dupinterval) { - if (r->replybuf) { - debug(DBG_INFO, "addclientrq: already sent reply to request with id %d from %s, resending", rq->rqid, addr2string(r->from->addr)); - sendreply(newrqref(r)); - } else - debug(DBG_INFO, "addclientrq: already got request with id %d from %s, ignoring", rq->rqid, addr2string(r->from->addr)); - return 0; - } - } - freerq(r); - } - rq->from->rqs[rq->rqid] = newrqref(rq); - return 1; -} - -void rmclientrq(struct request *rq, uint8_t id) { - struct request *r; - - r = rq->from->rqs[id]; - if (r) { - freerq(r); - rq->from->rqs[id] = NULL; - } -} - -/* returns 0 if validation/authentication fails, else 1 */ -int radsrv(struct request *rq) { - struct radmsg *msg = NULL; - struct tlv *attr; - uint8_t *userascii = NULL; - struct realm *realm = NULL; - struct server *to = NULL; - struct client *from = rq->from; - int ttlres; - - msg = buf2radmsg(rq->buf, (uint8_t *)from->conf->secret, NULL); - free(rq->buf); - rq->buf = NULL; - - if (!msg) { - debug(DBG_INFO, "radsrv: message validation failed, ignoring packet"); - freerq(rq); - return 0; - } - - rq->msg = msg; - rq->rqid = msg->id; - memcpy(rq->rqauth, msg->auth, 16); - - debug(DBG_DBG, "radsrv: code %d, id %d", msg->code, msg->id); - if (msg->code != RAD_Access_Request && msg->code != RAD_Status_Server && msg->code != RAD_Accounting_Request) { - debug(DBG_INFO, "radsrv: server currently accepts only access-requests, accounting-requests and status-server, ignoring"); - goto exit; - } - - if (!addclientrq(rq)) - goto exit; - - if (msg->code == RAD_Status_Server) { - respond(rq, RAD_Access_Accept, NULL); - goto exit; - } - - /* below: code == RAD_Access_Request || code == RAD_Accounting_Request */ - - if (from->conf->rewritein && !dorewrite(msg, from->conf->rewritein)) - goto rmclrqexit; - - ttlres = checkttl(msg, options.ttlattrtype); - if (!ttlres) { - debug(DBG_INFO, "radsrv: ignoring request from client %s (%s), ttl exceeded", from->conf->name, addr2string(from->addr)); - goto exit; - } - - attr = radmsg_gettype(msg, RAD_Attr_User_Name); - if (!attr) { - if (msg->code == RAD_Accounting_Request) { - acclog(msg, from); - respond(rq, RAD_Accounting_Response, NULL); - } else - debug(DBG_INFO, "radsrv: ignoring access request, no username attribute"); - goto exit; - } - - if (from->conf->rewriteusername && !rewriteusername(rq, attr)) { - debug(DBG_WARN, "radsrv: username malloc failed, ignoring request"); - goto rmclrqexit; - } - - userascii = radattr2ascii(attr); - if (!userascii) - goto rmclrqexit; - debug(DBG_DBG, "%s with username: %s", radmsgtype2string(msg->code), userascii); - - /* will return with lock on the realm */ - to = findserver(&realm, attr, msg->code == RAD_Accounting_Request); - if (!realm) { - debug(DBG_INFO, "radsrv: ignoring request, don't know where to send it"); - goto exit; - } - - if (!to) { - if (realm->message && msg->code == RAD_Access_Request) { - debug(DBG_INFO, "radsrv: sending reject to %s (%s) for %s", from->conf->name, addr2string(from->addr), userascii); - respond(rq, RAD_Access_Reject, realm->message); - } else if (realm->accresp && msg->code == RAD_Accounting_Request) { - acclog(msg, from); - respond(rq, RAD_Accounting_Response, NULL); - } - goto exit; - } - - if ((to->conf->loopprevention == 1 - || (to->conf->loopprevention == UCHAR_MAX && options.loopprevention == 1)) - && !strcmp(from->conf->name, to->conf->name)) { - debug(DBG_INFO, "radsrv: Loop prevented, not forwarding request from client %s (%s) to server %s, discarding", - from->conf->name, addr2string(from->addr), to->conf->name); - goto exit; - } - - if (msg->code == RAD_Accounting_Request) - memset(msg->auth, 0, 16); - else if (!RAND_bytes(msg->auth, 16)) { - debug(DBG_WARN, "radsrv: failed to generate random auth"); - goto rmclrqexit; - } - -#ifdef DEBUG - printfchars(NULL, "auth", "%02x ", auth, 16); -#endif - - attr = radmsg_gettype(msg, RAD_Attr_User_Password); - if (attr) { - debug(DBG_DBG, "radsrv: found userpwdattr with value length %d", attr->l); - if (!pwdrecrypt(attr->v, attr->l, from->conf->secret, to->conf->secret, rq->rqauth, msg->auth)) - goto rmclrqexit; - } - - attr = radmsg_gettype(msg, RAD_Attr_Tunnel_Password); - if (attr) { - debug(DBG_DBG, "radsrv: found tunnelpwdattr with value length %d", attr->l); - if (!pwdrecrypt(attr->v, attr->l, from->conf->secret, to->conf->secret, rq->rqauth, msg->auth)) - goto rmclrqexit; - } - - if (to->conf->rewriteout && !dorewrite(msg, to->conf->rewriteout)) - goto rmclrqexit; - - if (ttlres == -1 && (options.addttl || to->conf->addttl)) - addttlattr(msg, options.ttlattrtype, to->conf->addttl ? to->conf->addttl : options.addttl); - - free(userascii); - rq->to = to; - sendrq(rq); - pthread_mutex_unlock(&realm->mutex); - freerealm(realm); - return 1; - -rmclrqexit: - rmclientrq(rq, msg->id); -exit: - freerq(rq); - free(userascii); - if (realm) { - pthread_mutex_unlock(&realm->mutex); - freerealm(realm); - } - return 1; -} - -void replyh(struct server *server, unsigned char *buf) { - struct client *from; - struct rqout *rqout; - int sublen, ttlres; - unsigned char *subattrs; - uint8_t *username, *stationid, *replymsg; - struct radmsg *msg = NULL; - struct tlv *attr; - struct list_node *node; - - server->connectionok = 1; - server->lostrqs = 0; - - rqout = server->requests + buf[1]; - pthread_mutex_lock(rqout->lock); - if (!rqout->tries) { - free(buf); - buf = NULL; - debug(DBG_INFO, "replyh: no outstanding request with this id, ignoring reply"); - goto errunlock; - } - - msg = buf2radmsg(buf, (uint8_t *)server->conf->secret, rqout->rq->msg->auth); - free(buf); - buf = NULL; - if (!msg) { - debug(DBG_INFO, "replyh: message validation failed, ignoring packet"); - goto errunlock; - } - if (msg->code != RAD_Access_Accept && msg->code != RAD_Access_Reject && msg->code != RAD_Access_Challenge - && msg->code != RAD_Accounting_Response) { - debug(DBG_INFO, "replyh: discarding message type %s, accepting only access accept, access reject, access challenge and accounting response messages", radmsgtype2string(msg->code)); - goto errunlock; - } - debug(DBG_DBG, "got %s message with id %d", radmsgtype2string(msg->code), msg->id); - - gettimeofday(&server->lastrcv, NULL); - - if (rqout->rq->msg->code == RAD_Status_Server) { - freerqoutdata(rqout); - debug(DBG_DBG, "replyh: got status server response from %s", server->conf->name); - goto errunlock; - } - - gettimeofday(&server->lastreply, NULL); - from = rqout->rq->from; - - if (server->conf->rewritein && !dorewrite(msg, from->conf->rewritein)) { - debug(DBG_INFO, "replyh: rewritein failed"); - goto errunlock; - } - - ttlres = checkttl(msg, options.ttlattrtype); - if (!ttlres) { - debug(DBG_INFO, "replyh: ignoring reply from server %s, ttl exceeded", server->conf->name); - goto errunlock; - } - - /* MS MPPE */ - for (node = list_first(msg->attrs); node; node = list_next(node)) { - attr = (struct tlv *)node->data; - if (attr->t != RAD_Attr_Vendor_Specific) - continue; - if (attr->l <= 4) - break; - if (attr->v[0] != 0 || attr->v[1] != 0 || attr->v[2] != 1 || attr->v[3] != 55) /* 311 == MS */ - continue; - - sublen = attr->l - 4; - subattrs = attr->v + 4; - if (!attrvalidate(subattrs, sublen) || - !msmppe(subattrs, sublen, RAD_VS_ATTR_MS_MPPE_Send_Key, "MS MPPE Send Key", - rqout->rq, server->conf->secret, from->conf->secret) || - !msmppe(subattrs, sublen, RAD_VS_ATTR_MS_MPPE_Recv_Key, "MS MPPE Recv Key", - rqout->rq, server->conf->secret, from->conf->secret)) - break; - } - if (node) { - debug(DBG_WARN, "replyh: MS attribute handling failed, ignoring reply"); - goto errunlock; - } - - if (msg->code == RAD_Access_Accept || msg->code == RAD_Access_Reject || msg->code == RAD_Accounting_Response) { - username = radattr2ascii(radmsg_gettype(rqout->rq->msg, RAD_Attr_User_Name)); - if (username) { - stationid = radattr2ascii(radmsg_gettype(rqout->rq->msg, RAD_Attr_Calling_Station_Id)); - replymsg = radattr2ascii(radmsg_gettype(msg, RAD_Attr_Reply_Message)); - if (stationid) { - if (replymsg) { - debug(DBG_NOTICE, - "%s for user %s stationid %s from %s (%s) to %s (%s)", - radmsgtype2string(msg->code), username, stationid, - server->conf->name, replymsg, from->conf->name, - addr2string(from->addr)); - free(replymsg); - } else - debug(DBG_NOTICE, - "%s for user %s stationid %s from %s to %s (%s)", - radmsgtype2string(msg->code), username, stationid, - server->conf->name, from->conf->name, - addr2string(from->addr)); - free(stationid); - } else { - if (replymsg) { - debug(DBG_NOTICE, "%s for user %s from %s (%s) to %s (%s)", - radmsgtype2string(msg->code), username, - server->conf->name, replymsg, from->conf->name, - addr2string(from->addr)); - free(replymsg); - } else - debug(DBG_NOTICE, "%s for user %s from %s to %s (%s)", - radmsgtype2string(msg->code), username, - server->conf->name, from->conf->name, - addr2string(from->addr)); - } - free(username); - } - } - - msg->id = (char)rqout->rq->rqid; - memcpy(msg->auth, rqout->rq->rqauth, 16); - -#ifdef DEBUG - printfchars(NULL, "origauth/buf+4", "%02x ", buf + 4, 16); -#endif - - if (rqout->rq->origusername && (attr = radmsg_gettype(msg, RAD_Attr_User_Name))) { - if (!resizeattr(attr, strlen(rqout->rq->origusername))) { - debug(DBG_WARN, "replyh: malloc failed, ignoring reply"); - goto errunlock; - } - memcpy(attr->v, rqout->rq->origusername, strlen(rqout->rq->origusername)); - } - - if (from->conf->rewriteout && !dorewrite(msg, from->conf->rewriteout)) { - debug(DBG_WARN, "replyh: rewriteout failed"); - goto errunlock; - } - - if (ttlres == -1 && (options.addttl || from->conf->addttl)) - addttlattr(msg, options.ttlattrtype, from->conf->addttl ? from->conf->addttl : options.addttl); - - debug(msg->code == RAD_Access_Accept || msg->code == RAD_Access_Reject || msg->code == RAD_Accounting_Response ? DBG_WARN : DBG_INFO, - "replyh: passing %s to client %s (%s)", radmsgtype2string(msg->code), from->conf->name, addr2string(from->addr)); - - radmsg_free(rqout->rq->msg); - rqout->rq->msg = msg; - sendreply(newrqref(rqout->rq)); - freerqoutdata(rqout); - pthread_mutex_unlock(rqout->lock); - return; - -errunlock: - radmsg_free(msg); - pthread_mutex_unlock(rqout->lock); - return; -} - -struct request *createstatsrvrq() { - struct request *rq; - struct tlv *attr; - - rq = newrequest(); - if (!rq) - return NULL; - rq->msg = radmsg_init(RAD_Status_Server, 0, NULL); - if (!rq->msg) - goto exit; - attr = maketlv(RAD_Attr_Message_Authenticator, 16, NULL); - if (!attr) - goto exit; - if (!radmsg_add(rq->msg, attr)) { - freetlv(attr); - goto exit; - } - return rq; - -exit: - freerq(rq); - return NULL; -} - -/* code for removing state not finished */ -void *clientwr(void *arg) { - struct server *server = (struct server *)arg; - struct rqout *rqout = NULL; - pthread_t clientrdth; - int i, dynconffail = 0; - time_t secs; - uint8_t rnd; - struct timeval now, laststatsrv; - struct timespec timeout; - struct request *statsrvrq; - struct clsrvconf *conf; - - conf = server->conf; - - if (server->dynamiclookuparg && !dynamicconfig(server)) { - dynconffail = 1; - server->dynstartup = 0; - sleep(900); - goto errexit; - } - - if (!resolvehostports(conf->hostports, conf->pdef->socktype)) { - debug(DBG_WARN, "clientwr: resolve failed"); - server->dynstartup = 0; - sleep(900); - goto errexit; - } - - memset(&timeout, 0, sizeof(struct timespec)); - - if (conf->statusserver) { - gettimeofday(&server->lastrcv, NULL); - gettimeofday(&laststatsrv, NULL); - } - - if (conf->pdef->connecter) { - if (!conf->pdef->connecter(server, NULL, server->dynamiclookuparg ? 5 : 0, "clientwr")) { - if (server->dynamiclookuparg) { - server->dynstartup = 0; - sleep(900); - } - goto errexit; - } - server->connectionok = 1; - if (pthread_create(&clientrdth, NULL, conf->pdef->clientconnreader, (void *)server)) { - debugerrno(errno, DBG_ERR, "clientwr: pthread_create failed"); - goto errexit; - } - } else - server->connectionok = 1; - server->dynstartup = 0; - - for (;;) { - pthread_mutex_lock(&server->newrq_mutex); - if (!server->newrq) { - gettimeofday(&now, NULL); - /* random 0-7 seconds */ - RAND_bytes(&rnd, 1); - rnd /= 32; - if (conf->statusserver) { - secs = server->lastrcv.tv_sec > laststatsrv.tv_sec ? server->lastrcv.tv_sec : laststatsrv.tv_sec; - if (now.tv_sec - secs > STATUS_SERVER_PERIOD) - secs = now.tv_sec; - if (!timeout.tv_sec || timeout.tv_sec > secs + STATUS_SERVER_PERIOD + rnd) - timeout.tv_sec = secs + STATUS_SERVER_PERIOD + rnd; - } else { - if (!timeout.tv_sec || timeout.tv_sec > now.tv_sec + STATUS_SERVER_PERIOD + rnd) - timeout.tv_sec = now.tv_sec + STATUS_SERVER_PERIOD + rnd; - } -#if 0 - if (timeout.tv_sec > now.tv_sec) - debug(DBG_DBG, "clientwr: waiting up to %ld secs for new request", timeout.tv_sec - now.tv_sec); -#endif - pthread_cond_timedwait(&server->newrq_cond, &server->newrq_mutex, &timeout); - timeout.tv_sec = 0; - } - if (server->newrq) { - debug(DBG_DBG, "clientwr: got new request"); - server->newrq = 0; - } -#if 0 - else - debug(DBG_DBG, "clientwr: request timer expired, processing request queue"); -#endif - pthread_mutex_unlock(&server->newrq_mutex); - - for (i = 0; i < MAX_REQUESTS; i++) { - if (server->clientrdgone) { - pthread_join(clientrdth, NULL); - goto errexit; - } - - for (; i < MAX_REQUESTS; i++) { - rqout = server->requests + i; - if (rqout->rq) { - pthread_mutex_lock(rqout->lock); - if (rqout->rq) - break; - pthread_mutex_unlock(rqout->lock); - } - } - - if (i == MAX_REQUESTS) - break; - - gettimeofday(&now, NULL); - if (now.tv_sec < rqout->expiry.tv_sec) { - if (!timeout.tv_sec || rqout->expiry.tv_sec < timeout.tv_sec) - timeout.tv_sec = rqout->expiry.tv_sec; - pthread_mutex_unlock(rqout->lock); - continue; - } - - if (rqout->tries == (*rqout->rq->buf == RAD_Status_Server ? 1 : conf->retrycount + 1)) { - debug(DBG_DBG, "clientwr: removing expired packet from queue"); - if (conf->statusserver) { - if (*rqout->rq->buf == RAD_Status_Server) { - debug(DBG_WARN, "clientwr: no status server response, %s dead?", conf->name); - if (server->lostrqs < 255) - server->lostrqs++; - } - } else { - debug(DBG_WARN, "clientwr: no server response, %s dead?", conf->name); - if (server->lostrqs < 255) - server->lostrqs++; - } - freerqoutdata(rqout); - pthread_mutex_unlock(rqout->lock); - continue; - } - - rqout->expiry.tv_sec = now.tv_sec + conf->retryinterval; - if (!timeout.tv_sec || rqout->expiry.tv_sec < timeout.tv_sec) - timeout.tv_sec = rqout->expiry.tv_sec; - rqout->tries++; - conf->pdef->clientradput(server, rqout->rq->buf); - pthread_mutex_unlock(rqout->lock); - } - if (conf->statusserver && server->connectionok) { - secs = server->lastrcv.tv_sec > laststatsrv.tv_sec ? server->lastrcv.tv_sec : laststatsrv.tv_sec; - gettimeofday(&now, NULL); - if (now.tv_sec - secs > STATUS_SERVER_PERIOD) { - laststatsrv = now; - statsrvrq = createstatsrvrq(); - if (statsrvrq) { - statsrvrq->to = server; - debug(DBG_DBG, "clientwr: sending status server to %s", conf->name); - sendrq(statsrvrq); - } - } - } - } -errexit: - conf->servers = NULL; - if (server->dynamiclookuparg) { - removeserversubrealms(realms, conf); - if (dynconffail) - free(conf); - else - freeclsrvconf(conf); - } - freeserver(server, 1); - ERR_remove_state(0); - return NULL; -} - -void createlistener(uint8_t type, char *arg) { - pthread_t th; - struct addrinfo *res; - int s = -1, on = 1, *sp = NULL; - struct hostportres *hp = newhostport(arg, protodefs[type]->portdefault, 0); - - if (!hp || !resolvehostport(hp, protodefs[type]->socktype, 1)) - debugx(1, DBG_ERR, "createlistener: failed to resolve %s", arg); - - for (res = hp->addrinfo; res; res = res->ai_next) { - s = socket(res->ai_family, res->ai_socktype, res->ai_protocol); - if (s < 0) { - debugerrno(errno, DBG_WARN, "createlistener: socket failed"); - continue; - } - setsockopt(s, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on)); - - disable_DF_bit(s, res); - -#ifdef IPV6_V6ONLY - if (res->ai_family == AF_INET6) - setsockopt(s, IPPROTO_IPV6, IPV6_V6ONLY, &on, sizeof(on)); -#endif - if (bind(s, res->ai_addr, res->ai_addrlen)) { - debugerrno(errno, DBG_WARN, "createlistener: bind failed"); - close(s); - s = -1; - continue; - } - - sp = malloc(sizeof(int)); - if (!sp) - debugx(1, DBG_ERR, "malloc failed"); - *sp = s; - if (pthread_create(&th, NULL, protodefs[type]->listener, (void *)sp)) - debugerrnox(errno, DBG_ERR, "pthread_create failed"); - pthread_detach(th); - } - if (!sp) - debugx(1, DBG_ERR, "createlistener: socket/bind failed"); - - debug(DBG_WARN, "createlistener: listening for %s on %s:%s", protodefs[type]->name, hp->host ? hp->host : "*", hp->port); - freehostport(hp); -} - -void createlisteners(uint8_t type) { - int i; - char **args; - - args = protodefs[type]->getlistenerargs(); - if (args) - for (i = 0; args[i]; i++) - createlistener(type, args[i]); - else - createlistener(type, NULL); -} - -void sslinit() { - int i; - time_t t; - pid_t pid; - - ssl_locks = calloc(CRYPTO_num_locks(), sizeof(pthread_mutex_t)); - ssl_lock_count = OPENSSL_malloc(CRYPTO_num_locks() * sizeof(long)); - for (i = 0; i < CRYPTO_num_locks(); i++) { - ssl_lock_count[i] = 0; - pthread_mutex_init(&ssl_locks[i], NULL); - } - CRYPTO_set_id_callback(ssl_thread_id); - CRYPTO_set_locking_callback(ssl_locking_callback); - - SSL_load_error_strings(); - SSL_library_init(); - - while (!RAND_status()) { - t = time(NULL); - pid = getpid(); - RAND_seed((unsigned char *)&t, sizeof(time_t)); - RAND_seed((unsigned char *)&pid, sizeof(pid)); - } -} - -struct list *addsrvconfs(char *value, char **names) { - struct list *conflist; - int n; - struct list_node *entry; - struct clsrvconf *conf = NULL; - - if (!names || !*names) - return NULL; - - conflist = list_create(); - if (!conflist) { - debug(DBG_ERR, "malloc failed"); - return NULL; - } - - for (n = 0; names[n]; n++) { - for (entry = list_first(srvconfs); entry; entry = list_next(entry)) { - conf = (struct clsrvconf *)entry->data; - if (!strcasecmp(names[n], conf->name)) - break; - } - if (!entry) { - debug(DBG_ERR, "addsrvconfs failed for realm %s, no server named %s", value, names[n]); - list_destroy(conflist); - return NULL; - } - if (!list_push(conflist, conf)) { - debug(DBG_ERR, "malloc failed"); - list_destroy(conflist); - return NULL; - } - debug(DBG_DBG, "addsrvconfs: added server %s for realm %s", conf->name, value); - } - return conflist; -} - -void freerealm(struct realm *realm) { - if (!realm) - return; - debug(DBG_DBG, "freerealm: called with refcount %d", realm->refcount); - if (--realm->refcount) - return; - - free(realm->name); - free(realm->message); - regfree(&realm->regex); - pthread_mutex_destroy(&realm->mutex); - /* if refcount == 0, all subrealms gone */ - list_destroy(realm->subrealms); - /* if refcount == 0, all srvconfs gone */ - list_destroy(realm->srvconfs); - /* if refcount == 0, all accsrvconfs gone */ - list_destroy(realm->accsrvconfs); - freerealm(realm->parent); - free(realm); -} - -struct realm *addrealm(struct list *realmlist, char *value, char **servers, char **accservers, char *message, uint8_t accresp) { - int n; - struct realm *realm; - char *s, *regex = NULL; - - if (*value == '/') { - /* regexp, remove optional trailing / if present */ - if (value[strlen(value) - 1] == '/') - value[strlen(value) - 1] = '\0'; - } else { - /* not a regexp, let us make it one */ - if (*value == '*' && !value[1]) - regex = stringcopy(".*", 0); - else { - for (n = 0, s = value; *s;) - if (*s++ == '.') - n++; - regex = malloc(strlen(value) + n + 3); - if (regex) { - regex[0] = '@'; - for (n = 1, s = value; *s; s++) { - if (*s == '.') - regex[n++] = '\\'; - regex[n++] = *s; - } - regex[n++] = '$'; - regex[n] = '\0'; - } - } - if (!regex) { - debug(DBG_ERR, "malloc failed"); - realm = NULL; - goto exit; - } - debug(DBG_DBG, "addrealm: constructed regexp %s from %s", regex, value); - } - - realm = malloc(sizeof(struct realm)); - if (!realm) { - debug(DBG_ERR, "malloc failed"); - goto exit; - } - memset(realm, 0, sizeof(struct realm)); - - if (pthread_mutex_init(&realm->mutex, NULL)) { - debugerrno(errno, DBG_ERR, "mutex init failed"); - free(realm); - realm = NULL; - goto exit; - } - - realm->name = stringcopy(value, 0); - if (!realm->name) { - debug(DBG_ERR, "malloc failed"); - goto errexit; - } - if (message && strlen(message) > 253) { - debug(DBG_ERR, "ReplyMessage can be at most 253 bytes"); - goto errexit; - } - realm->message = message; - realm->accresp = accresp; - - if (regcomp(&realm->regex, regex ? regex : value + 1, REG_EXTENDED | REG_ICASE | REG_NOSUB)) { - debug(DBG_ERR, "addrealm: failed to compile regular expression %s", regex ? regex : value + 1); - goto errexit; - } - - if (servers && *servers) { - realm->srvconfs = addsrvconfs(value, servers); - if (!realm->srvconfs) - goto errexit; - } - - if (accservers && *accservers) { - realm->accsrvconfs = addsrvconfs(value, accservers); - if (!realm->accsrvconfs) - goto errexit; - } - - if (!list_push(realmlist, realm)) { - debug(DBG_ERR, "malloc failed"); - pthread_mutex_destroy(&realm->mutex); - goto errexit; - } - - debug(DBG_DBG, "addrealm: added realm %s", value); - goto exit; - -errexit: - while (list_shift(realm->srvconfs)); - while (list_shift(realm->accsrvconfs)); - freerealm(realm); - realm = NULL; -exit: - free(regex); - if (servers) { - if (realm) - for (n = 0; servers[n]; n++) - newrealmref(realm); - freegconfmstr(servers); - } - if (accservers) { - if (realm) - for (n = 0; accservers[n]; n++) - newrealmref(realm); - freegconfmstr(accservers); - } - return newrealmref(realm); -} - -struct list *createsubrealmservers(struct realm *realm, struct list *srvconfs) { - struct list_node *entry; - struct clsrvconf *conf, *srvconf; - struct list *subrealmservers = NULL; - pthread_t clientth; - - if (list_first(srvconfs)) { - subrealmservers = list_create(); - if (!subrealmservers) - return NULL; - } - - for (entry = list_first(srvconfs); entry; entry = list_next(entry)) { - conf = (struct clsrvconf *)entry->data; - if (!conf->servers && conf->dynamiclookupcommand) { - srvconf = malloc(sizeof(struct clsrvconf)); - if (!srvconf) { - debug(DBG_ERR, "malloc failed"); - continue; - } - *srvconf = *conf; - if (addserver(srvconf)) { - srvconf->servers->dynamiclookuparg = stringcopy(realm->name, 0); - srvconf->servers->dynstartup = 1; - if (pthread_create(&clientth, NULL, clientwr, (void *)(srvconf->servers))) { - debugerrno(errno, DBG_ERR, "pthread_create failed"); - freeserver(srvconf->servers, 1); - srvconf->servers = NULL; - } else - pthread_detach(clientth); - } - conf = srvconf; - } - if (conf->servers) { - if (list_push(subrealmservers, conf)) - newrealmref(realm); - else - debug(DBG_ERR, "malloc failed"); - } - } - return subrealmservers; -} - -struct realm *adddynamicrealmserver(struct realm *realm, char *id) { - struct realm *newrealm = NULL; - char *realmname, *s; - - /* create dynamic for the realm (string after last @, exit if nothing after @ */ - realmname = strrchr(id, '@'); - if (!realmname) - return NULL; - realmname++; - if (!*realmname) - return NULL; - for (s = realmname; *s; s++) - if (*s != '.' && *s != '-' && !isalnum((int)*s)) - return NULL; - - if (!realm->subrealms) - realm->subrealms = list_create(); - if (!realm->subrealms) - return NULL; - - newrealm = addrealm(realm->subrealms, realmname, NULL, NULL, stringcopy(realm->message, 0), realm->accresp); - if (!newrealm) { - list_destroy(realm->subrealms); - realm->subrealms = NULL; - return NULL; - } - - newrealm->parent = newrealmref(realm); - /* add server and accserver to newrealm */ - newrealm->srvconfs = createsubrealmservers(newrealm, realm->srvconfs); - newrealm->accsrvconfs = createsubrealmservers(newrealm, realm->accsrvconfs); - return newrealm; -} - -int dynamicconfig(struct server *server) { - int ok, fd[2], status; - pid_t pid; - struct clsrvconf *conf = server->conf; - struct gconffile *cf = NULL; - - /* for now we only learn hostname/address */ - debug(DBG_DBG, "dynamicconfig: need dynamic server config for %s", server->dynamiclookuparg); - - if (pipe(fd) > 0) { - debugerrno(errno, DBG_ERR, "dynamicconfig: pipe error"); - goto errexit; - } - pid = fork(); - if (pid < 0) { - debugerrno(errno, DBG_ERR, "dynamicconfig: fork error"); - close(fd[0]); - close(fd[1]); - goto errexit; - } else if (pid == 0) { - /* child */ - close(fd[0]); - if (fd[1] != STDOUT_FILENO) { - if (dup2(fd[1], STDOUT_FILENO) != STDOUT_FILENO) - debugx(1, DBG_ERR, "dynamicconfig: dup2 error for command %s", conf->dynamiclookupcommand); - close(fd[1]); - } - if (execlp(conf->dynamiclookupcommand, conf->dynamiclookupcommand, server->dynamiclookuparg, NULL) < 0) - debugx(1, DBG_ERR, "dynamicconfig: exec error for command %s", conf->dynamiclookupcommand); - } - - close(fd[1]); - pushgconffile(&cf, fdopen(fd[0], "r"), conf->dynamiclookupcommand); - ok = getgenericconfig(&cf, NULL, - "Server", CONF_CBK, confserver_cb, (void *)conf, - NULL - ); - freegconf(&cf); - - if (waitpid(pid, &status, 0) < 0) { - debugerrno(errno, DBG_ERR, "dynamicconfig: wait error"); - goto errexit; - } - - if (status) { - debug(DBG_INFO, "dynamicconfig: command exited with status %d", WEXITSTATUS(status)); - goto errexit; - } - - if (ok) - return 1; - -errexit: - debug(DBG_WARN, "dynamicconfig: failed to obtain dynamic server config"); - return 0; -} - -/* should accept both names and numeric values, only numeric right now */ -uint8_t attrname2val(char *attrname) { - int val = 0; - - val = atoi(attrname); - return val > 0 && val < 256 ? val : 0; -} - -/* ATTRNAME is on the form vendor[:type]. - If only vendor is found, TYPE is set to 256 and 1 is returned. - If type is >= 256, 1 is returned. - Otherwise, 0 is returned. -*/ -/* should accept both names and numeric values, only numeric right now */ -int vattrname2val(char *attrname, uint32_t *vendor, uint32_t *type) { - char *s; - - *vendor = atoi(attrname); - s = strchr(attrname, ':'); - if (!s) { /* Only vendor was found. */ - *type = 256; - return 1; - } - *type = atoi(s + 1); - return *type < 256; -} - -/** Extract attributes from string NAMEVAL, create a struct tlv and - * return the tlv. If VENDOR_FLAG, NAMEVAL is on the form - * "<vendor>:<name>:<val>" and otherwise it's "<name>:<val>". Return - * NULL if fields are missing or if conversion fails. - * - * FIXME: Should accept both names and numeric values, only numeric - * right now */ -struct tlv *extractattr(char *nameval, char vendor_flag) { - int len, name = 0; - int vendor = 0; /* Vendor 0 is reserved, see RFC 1700. */ - char *s, *s2; - struct tlv *a; - - s = strchr(nameval, ':'); - if (!s) - return NULL; - name = atoi(nameval); - - if (vendor_flag) { - s2 = strchr(s + 1, ':'); - if (!s2) - return NULL; - vendor = name; - name = atoi(s + 1); - s = s2; - } - len = strlen(s + 1); - if (len > 253) - return NULL; - - if (name < 1 || name > 255) - return NULL; - a = malloc(sizeof(struct tlv)); - if (!a) - return NULL; - - a->v = (uint8_t *)stringcopy(s + 1, 0); - if (!a->v) { - free(a); - return NULL; - } - a->t = name; - a->l = len; - - if (vendor_flag) - a = makevendortlv(vendor, a); - - return a; -} - -/* should accept both names and numeric values, only numeric right now */ -struct modattr *extractmodattr(char *nameval) { - int name = 0; - char *s, *t; - struct modattr *m; - - if (!strncasecmp(nameval, "User-Name:/", 11)) { - s = nameval + 11; - name = 1; - } else { - s = strchr(nameval, ':'); - name = atoi(nameval); - if (!s || name < 1 || name > 255 || s[1] != '/') - return NULL; - s += 2; - } - /* regexp, remove optional trailing / if present */ - if (s[strlen(s) - 1] == '/') - s[strlen(s) - 1] = '\0'; - - t = strchr(s, '/'); - if (!t) - return NULL; - *t = '\0'; - t++; - - m = malloc(sizeof(struct modattr)); - if (!m) { - debug(DBG_ERR, "malloc failed"); - return NULL; - } - m->t = name; - - m->replacement = stringcopy(t, 0); - if (!m->replacement) { - free(m); - debug(DBG_ERR, "malloc failed"); - return NULL; - } - - m->regex = malloc(sizeof(regex_t)); - if (!m->regex) { - free(m->replacement); - free(m); - debug(DBG_ERR, "malloc failed"); - return NULL; - } - - if (regcomp(m->regex, s, REG_ICASE | REG_EXTENDED)) { - free(m->regex); - free(m->replacement); - free(m); - debug(DBG_ERR, "failed to compile regular expression %s", s); - return NULL; - } - - return m; -} - -struct rewrite *getrewrite(char *alt1, char *alt2) { - struct rewrite *r; - - if ((r = hash_read(rewriteconfs, alt1, strlen(alt1)))) - return r; - if ((r = hash_read(rewriteconfs, alt2, strlen(alt2)))) - return r; - return NULL; -} - -void addrewrite(char *value, char **rmattrs, char **rmvattrs, char **addattrs, char **addvattrs, char **modattrs) -{ - struct rewrite *rewrite = NULL; - int i, n; - uint8_t *rma = NULL; - uint32_t *p, *rmva = NULL; - struct list *adda = NULL, *moda = NULL; - struct tlv *a; - struct modattr *m; - - if (rmattrs) { - for (n = 0; rmattrs[n]; n++); - rma = calloc(n + 1, sizeof(uint8_t)); - if (!rma) - debugx(1, DBG_ERR, "malloc failed"); - - for (i = 0; i < n; i++) - if (!(rma[i] = attrname2val(rmattrs[i]))) - debugx(1, DBG_ERR, "addrewrite: removing invalid attribute %s", rmattrs[i]); - freegconfmstr(rmattrs); - rma[i] = 0; - } - - if (rmvattrs) { - for (n = 0; rmvattrs[n]; n++); - rmva = calloc(2 * n + 1, sizeof(uint32_t)); - if (!rmva) - debugx(1, DBG_ERR, "malloc failed"); - - for (p = rmva, i = 0; i < n; i++, p += 2) - if (!vattrname2val(rmvattrs[i], p, p + 1)) - debugx(1, DBG_ERR, "addrewrite: removing invalid vendor attribute %s", rmvattrs[i]); - freegconfmstr(rmvattrs); - *p = 0; - } - - if (addattrs) { - adda = list_create(); - if (!adda) - debugx(1, DBG_ERR, "malloc failed"); - for (i = 0; addattrs[i]; i++) { - a = extractattr(addattrs[i], 0); - if (!a) - debugx(1, DBG_ERR, "addrewrite: adding invalid attribute %s", addattrs[i]); - if (!list_push(adda, a)) - debugx(1, DBG_ERR, "malloc failed"); - } - freegconfmstr(addattrs); - } - - if (addvattrs) { - if (!adda) - adda = list_create(); - if (!adda) - debugx(1, DBG_ERR, "malloc failed"); - for (i = 0; addvattrs[i]; i++) { - a = extractattr(addvattrs[i], 1); - if (!a) - debugx(1, DBG_ERR, "addrewrite: adding invalid vendor attribute %s", addvattrs[i]); - if (!list_push(adda, a)) - debugx(1, DBG_ERR, "malloc failed"); - } - freegconfmstr(addvattrs); - } - - if (modattrs) { - moda = list_create(); - if (!moda) - debugx(1, DBG_ERR, "malloc failed"); - for (i = 0; modattrs[i]; i++) { - m = extractmodattr(modattrs[i]); - if (!m) - debugx(1, DBG_ERR, "addrewrite: modifying invalid attribute %s", modattrs[i]); - if (!list_push(moda, m)) - debugx(1, DBG_ERR, "malloc failed"); - } - freegconfmstr(modattrs); - } - - if (rma || rmva || adda || moda) { - rewrite = malloc(sizeof(struct rewrite)); - if (!rewrite) - debugx(1, DBG_ERR, "malloc failed"); - rewrite->removeattrs = rma; - rewrite->removevendorattrs = rmva; - rewrite->addattrs = adda; - rewrite->modattrs = moda; - } - - if (!hash_insert(rewriteconfs, value, strlen(value), rewrite)) - debugx(1, DBG_ERR, "malloc failed"); - debug(DBG_DBG, "addrewrite: added rewrite block %s", value); -} - -int setttlattr(struct options *opts, char *defaultattr) { - char *ttlattr = opts->ttlattr ? opts->ttlattr : defaultattr; - - if (vattrname2val(ttlattr, opts->ttlattrtype, opts->ttlattrtype + 1) && - (opts->ttlattrtype[1] != 256 || opts->ttlattrtype[0] < 256)) - return 1; - debug(DBG_ERR, "setttlattr: invalid TTLAttribute value %s", ttlattr); - return 0; -} - -void freeclsrvconf(struct clsrvconf *conf) { - free(conf->name); - if (conf->hostsrc) - freegconfmstr(conf->hostsrc); - free(conf->portsrc); - free(conf->secret); - free(conf->tls); - free(conf->matchcertattr); - if (conf->certcnregex) - regfree(conf->certcnregex); - if (conf->certuriregex) - regfree(conf->certuriregex); - free(conf->confrewritein); - free(conf->confrewriteout); - if (conf->rewriteusername) { - if (conf->rewriteusername->regex) - regfree(conf->rewriteusername->regex); - free(conf->rewriteusername->replacement); - free(conf->rewriteusername); - } - free(conf->dynamiclookupcommand); - free(conf->rewritein); - free(conf->rewriteout); - if (conf->hostports) - freehostports(conf->hostports); - if (conf->lock) { - pthread_mutex_destroy(conf->lock); - free(conf->lock); - } - /* not touching ssl_ctx, clients and servers */ - free(conf); -} - -int mergeconfstring(char **dst, char **src) { - char *t; - - if (*src) { - *dst = *src; - *src = NULL; - return 1; - } - if (*dst) { - t = stringcopy(*dst, 0); - if (!t) { - debug(DBG_ERR, "malloc failed"); - return 0; - } - *dst = t; - } - return 1; -} - -char **mstringcopy(char **in) { - char **out; - int n; - - if (!in) - return NULL; - - for (n = 0; in[n]; n++); - out = malloc((n + 1) * sizeof(char *)); - if (!out) - return NULL; - for (n = 0; in[n]; n++) { - out[n] = stringcopy(in[n], 0); - if (!out[n]) { - freegconfmstr(out); - return NULL; - } - } - out[n] = NULL; - return out; -} - -int mergeconfmstring(char ***dst, char ***src) { - char **t; - - if (*src) { - *dst = *src; - *src = NULL; - return 1; - } - if (*dst) { - t = mstringcopy(*dst); - if (!t) { - debug(DBG_ERR, "malloc failed"); - return 0; - } - *dst = t; - } - return 1; -} - -/* assumes dst is a shallow copy */ -int mergesrvconf(struct clsrvconf *dst, struct clsrvconf *src) { - if (!mergeconfstring(&dst->name, &src->name) || - !mergeconfmstring(&dst->hostsrc, &src->hostsrc) || - !mergeconfstring(&dst->portsrc, &src->portsrc) || - !mergeconfstring(&dst->secret, &src->secret) || - !mergeconfstring(&dst->tls, &src->tls) || - !mergeconfstring(&dst->matchcertattr, &src->matchcertattr) || - !mergeconfstring(&dst->confrewritein, &src->confrewritein) || - !mergeconfstring(&dst->confrewriteout, &src->confrewriteout) || - !mergeconfstring(&dst->dynamiclookupcommand, &src->dynamiclookupcommand)) - return 0; - if (src->pdef) - dst->pdef = src->pdef; - dst->statusserver = src->statusserver; - dst->certnamecheck = src->certnamecheck; - if (src->retryinterval != 255) - dst->retryinterval = src->retryinterval; - if (src->retrycount != 255) - dst->retrycount = src->retrycount; - return 1; -} - -int confclient_cb(struct gconffile **cf, void *arg, char *block, char *opt, char *val) { - struct clsrvconf *conf; - char *conftype = NULL, *rewriteinalias = NULL; - long int dupinterval = LONG_MIN, addttl = LONG_MIN; - - debug(DBG_DBG, "confclient_cb called for %s", block); - - conf = malloc(sizeof(struct clsrvconf)); - if (!conf) - debugx(1, DBG_ERR, "malloc failed"); - memset(conf, 0, sizeof(struct clsrvconf)); - conf->certnamecheck = 1; - - if (!getgenericconfig(cf, block, - "type", CONF_STR, &conftype, - "host", CONF_MSTR, &conf->hostsrc, - "secret", CONF_STR, &conf->secret, -#if defined(RADPROT_TLS) || defined(RADPROT_DTLS) - "tls", CONF_STR, &conf->tls, - "matchcertificateattribute", CONF_STR, &conf->matchcertattr, - "CertificateNameCheck", CONF_BLN, &conf->certnamecheck, -#endif - "DuplicateInterval", CONF_LINT, &dupinterval, - "addTTL", CONF_LINT, &addttl, - "rewrite", CONF_STR, &rewriteinalias, - "rewriteIn", CONF_STR, &conf->confrewritein, - "rewriteOut", CONF_STR, &conf->confrewriteout, - "rewriteattribute", CONF_STR, &conf->confrewriteusername, - NULL - )) - debugx(1, DBG_ERR, "configuration error"); - - conf->name = stringcopy(val, 0); - if (conf->name && !conf->hostsrc) { - conf->hostsrc = malloc(2 * sizeof(char *)); - if (conf->hostsrc) { - conf->hostsrc[0] = stringcopy(val, 0); - conf->hostsrc[1] = NULL; - } - } - if (!conf->name || !conf->hostsrc || !conf->hostsrc[0]) - debugx(1, DBG_ERR, "malloc failed"); - - if (!conftype) - debugx(1, DBG_ERR, "error in block %s, option type missing", block); - conf->type = protoname2int(conftype); - if (conf->type == 255) - debugx(1, DBG_ERR, "error in block %s, unknown transport %s", block, conftype); - free(conftype); - conf->pdef = protodefs[conf->type]; - -#if defined(RADPROT_TLS) || defined(RADPROT_DTLS) - if (conf->type == RAD_TLS || conf->type == RAD_DTLS) { - conf->tlsconf = conf->tls ? tlsgettls(conf->tls, NULL) : tlsgettls("defaultclient", "default"); - if (!conf->tlsconf) - debugx(1, DBG_ERR, "error in block %s, no tls context defined", block); - if (conf->matchcertattr && !addmatchcertattr(conf)) - debugx(1, DBG_ERR, "error in block %s, invalid MatchCertificateAttributeValue", block); - } -#endif - - if (dupinterval != LONG_MIN) { - if (dupinterval < 0 || dupinterval > 255) - debugx(1, DBG_ERR, "error in block %s, value of option DuplicateInterval is %d, must be 0-255", block, dupinterval); - conf->dupinterval = (uint8_t)dupinterval; - } else - conf->dupinterval = conf->pdef->duplicateintervaldefault; - - if (addttl != LONG_MIN) { - if (addttl < 1 || addttl > 255) - debugx(1, DBG_ERR, "error in block %s, value of option addTTL is %d, must be 1-255", block, addttl); - conf->addttl = (uint8_t)addttl; - } - - if (!conf->confrewritein) - conf->confrewritein = rewriteinalias; - else - free(rewriteinalias); - conf->rewritein = conf->confrewritein ? getrewrite(conf->confrewritein, NULL) : getrewrite("defaultclient", "default"); - if (conf->confrewriteout) - conf->rewriteout = getrewrite(conf->confrewriteout, NULL); - - if (conf->confrewriteusername) { - conf->rewriteusername = extractmodattr(conf->confrewriteusername); - if (!conf->rewriteusername) - debugx(1, DBG_ERR, "error in block %s, invalid RewriteAttributeValue", block); - } - - if (!addhostport(&conf->hostports, conf->hostsrc, conf->pdef->portdefault, 1) || - !resolvehostports(conf->hostports, conf->pdef->socktype)) - debugx(1, DBG_ERR, "resolve failed, exiting"); - - if (!conf->secret) { - if (!conf->pdef->secretdefault) - debugx(1, DBG_ERR, "error in block %s, secret must be specified for transport type %s", block, conf->pdef->name); - conf->secret = stringcopy(conf->pdef->secretdefault, 0); - if (!conf->secret) - debugx(1, DBG_ERR, "malloc failed"); - } - - conf->lock = malloc(sizeof(pthread_mutex_t)); - if (!conf->lock) - debugx(1, DBG_ERR, "malloc failed"); - - pthread_mutex_init(conf->lock, NULL); - if (!list_push(clconfs, conf)) - debugx(1, DBG_ERR, "malloc failed"); - return 1; -} - -int compileserverconfig(struct clsrvconf *conf, const char *block) { -#if defined(RADPROT_TLS) || defined(RADPROT_DTLS) - if (conf->type == RAD_TLS || conf->type == RAD_DTLS) { - conf->tlsconf = conf->tls ? tlsgettls(conf->tls, NULL) : tlsgettls("defaultserver", "default"); - if (!conf->tlsconf) { - debug(DBG_ERR, "error in block %s, no tls context defined", block); - return 0; - } - if (conf->matchcertattr && !addmatchcertattr(conf)) { - debug(DBG_ERR, "error in block %s, invalid MatchCertificateAttributeValue", block); - return 0; - } - } -#endif - - if (!conf->portsrc) { - conf->portsrc = stringcopy(conf->pdef->portdefault, 0); - if (!conf->portsrc) { - debug(DBG_ERR, "malloc failed"); - return 0; - } - } - - if (conf->retryinterval == 255) - conf->retryinterval = conf->pdef->retryintervaldefault; - if (conf->retrycount == 255) - conf->retrycount = conf->pdef->retrycountdefault; - - conf->rewritein = conf->confrewritein ? getrewrite(conf->confrewritein, NULL) : getrewrite("defaultserver", "default"); - if (conf->confrewriteout) - conf->rewriteout = getrewrite(conf->confrewriteout, NULL); - - if (!addhostport(&conf->hostports, conf->hostsrc, conf->portsrc, 0)) { - debug(DBG_ERR, "error in block %s, failed to parse %s", block, conf->hostsrc); - return 0; - } - - if (!conf->dynamiclookupcommand && !resolvehostports(conf->hostports, conf->pdef->socktype)) { - debug(DBG_ERR, "resolve failed, exiting"); - return 0; - } - return 1; -} - -int confserver_cb(struct gconffile **cf, void *arg, char *block, char *opt, char *val) { - struct clsrvconf *conf, *resconf; - char *conftype = NULL, *rewriteinalias = NULL; - long int retryinterval = LONG_MIN, retrycount = LONG_MIN, addttl = LONG_MIN; - - debug(DBG_DBG, "confserver_cb called for %s", block); - - conf = malloc(sizeof(struct clsrvconf)); - if (!conf) { - debug(DBG_ERR, "malloc failed"); - return 0; - } - memset(conf, 0, sizeof(struct clsrvconf)); - conf->loopprevention = UCHAR_MAX; /* Uninitialized. */ - resconf = (struct clsrvconf *)arg; - if (resconf) { - conf->statusserver = resconf->statusserver; - conf->certnamecheck = resconf->certnamecheck; - } else - conf->certnamecheck = 1; - - if (!getgenericconfig(cf, block, - "type", CONF_STR, &conftype, - "host", CONF_MSTR, &conf->hostsrc, - "port", CONF_STR, &conf->portsrc, - "secret", CONF_STR, &conf->secret, -#if defined(RADPROT_TLS) || defined(RADPROT_DTLS) - "tls", CONF_STR, &conf->tls, - "MatchCertificateAttribute", CONF_STR, &conf->matchcertattr, - "CertificateNameCheck", CONF_BLN, &conf->certnamecheck, -#endif - "addTTL", CONF_LINT, &addttl, - "rewrite", CONF_STR, &rewriteinalias, - "rewriteIn", CONF_STR, &conf->confrewritein, - "rewriteOut", CONF_STR, &conf->confrewriteout, - "StatusServer", CONF_BLN, &conf->statusserver, - "RetryInterval", CONF_LINT, &retryinterval, - "RetryCount", CONF_LINT, &retrycount, - "DynamicLookupCommand", CONF_STR, &conf->dynamiclookupcommand, - "LoopPrevention", CONF_BLN, &conf->loopprevention, - NULL - )) { - debug(DBG_ERR, "configuration error"); - goto errexit; - } - - conf->name = stringcopy(val, 0); - if (conf->name && !conf->hostsrc) { - conf->hostsrc = malloc(2 * sizeof(char *)); - if (conf->hostsrc) { - conf->hostsrc[0] = stringcopy(val, 0); - conf->hostsrc[1] = NULL; - } - } - if (!conf->name || !conf->hostsrc || !conf->hostsrc[0]) { - debug(DBG_ERR, "malloc failed"); - goto errexit; - } - - if (!conftype) { - debug(DBG_ERR, "error in block %s, option type missing", block); - goto errexit; - } - conf->type = protoname2int(conftype); - if (conf->type == 255) { - debug(DBG_ERR, "error in block %s, unknown transport %s", block, conftype); - goto errexit; - } - free(conftype); - conftype = NULL; - - conf->pdef = protodefs[conf->type]; - - if (!conf->confrewritein) - conf->confrewritein = rewriteinalias; - else - free(rewriteinalias); - rewriteinalias = NULL; - - if (retryinterval != LONG_MIN) { - if (retryinterval < 1 || retryinterval > conf->pdef->retryintervalmax) { - debug(DBG_ERR, "error in block %s, value of option RetryInterval is %d, must be 1-%d", block, retryinterval, conf->pdef->retryintervalmax); - goto errexit; - } - conf->retryinterval = (uint8_t)retryinterval; - } else - conf->retryinterval = 255; - - if (retrycount != LONG_MIN) { - if (retrycount < 0 || retrycount > conf->pdef->retrycountmax) { - debug(DBG_ERR, "error in block %s, value of option RetryCount is %d, must be 0-%d", block, retrycount, conf->pdef->retrycountmax); - goto errexit; - } - conf->retrycount = (uint8_t)retrycount; - } else - conf->retrycount = 255; - - if (addttl != LONG_MIN) { - if (addttl < 1 || addttl > 255) { - debug(DBG_ERR, "error in block %s, value of option addTTL is %d, must be 1-255", block, addttl); - goto errexit; - } - conf->addttl = (uint8_t)addttl; - } - - if (resconf) { - if (!mergesrvconf(resconf, conf)) - goto errexit; - free(conf); - conf = resconf; - if (conf->dynamiclookupcommand) { - free(conf->dynamiclookupcommand); - conf->dynamiclookupcommand = NULL; - } - } - - if (resconf || !conf->dynamiclookupcommand) { - if (!compileserverconfig(conf, block)) - goto errexit; - } - - if (!conf->secret) { - if (!conf->pdef->secretdefault) { - debug(DBG_ERR, "error in block %s, secret must be specified for transport type %s", block, conf->pdef->name); - return 0; - } - conf->secret = stringcopy(conf->pdef->secretdefault, 0); - if (!conf->secret) { - debug(DBG_ERR, "malloc failed"); - return 0; - } - } - - if (resconf) - return 1; - - if (!list_push(srvconfs, conf)) { - debug(DBG_ERR, "malloc failed"); - goto errexit; - } - return 1; - -errexit: - free(conftype); - free(rewriteinalias); - freeclsrvconf(conf); - return 0; -} - -int confrealm_cb(struct gconffile **cf, void *arg, char *block, char *opt, char *val) { - char **servers = NULL, **accservers = NULL, *msg = NULL; - uint8_t accresp = 0; - - debug(DBG_DBG, "confrealm_cb called for %s", block); - - if (!getgenericconfig(cf, block, - "server", CONF_MSTR, &servers, - "accountingServer", CONF_MSTR, &accservers, - "ReplyMessage", CONF_STR, &msg, - "AccountingResponse", CONF_BLN, &accresp, - NULL - )) - debugx(1, DBG_ERR, "configuration error"); - - addrealm(realms, val, servers, accservers, msg, accresp); - return 1; -} - -int confrewrite_cb(struct gconffile **cf, void *arg, char *block, char *opt, char *val) { - char **rmattrs = NULL, **rmvattrs = NULL; - char **addattrs = NULL, **addvattrs = NULL; - char **modattrs = NULL; - - debug(DBG_DBG, "confrewrite_cb called for %s", block); - - if (!getgenericconfig(cf, block, - "removeAttribute", CONF_MSTR, &rmattrs, - "removeVendorAttribute", CONF_MSTR, &rmvattrs, - "addAttribute", CONF_MSTR, &addattrs, - "addVendorAttribute", CONF_MSTR, &addvattrs, - "modifyAttribute", CONF_MSTR, &modattrs, - NULL - )) - debugx(1, DBG_ERR, "configuration error"); - addrewrite(val, rmattrs, rmvattrs, addattrs, addvattrs, modattrs); - return 1; -} - -int setprotoopts(uint8_t type, char **listenargs, char *sourcearg) { - struct commonprotoopts *protoopts; - - protoopts = malloc(sizeof(struct commonprotoopts)); - if (!protoopts) - return 0; - memset(protoopts, 0, sizeof(struct commonprotoopts)); - protoopts->listenargs = listenargs; - protoopts->sourcearg = sourcearg; - protodefs[type]->setprotoopts(protoopts); - return 1; -} - -void getmainconfig(const char *configfile) { - long int addttl = LONG_MIN, loglevel = LONG_MIN; - struct gconffile *cfs; - char **listenargs[RAD_PROTOCOUNT]; - char *sourcearg[RAD_PROTOCOUNT]; - int i; - - cfs = openconfigfile(configfile); - memset(&options, 0, sizeof(options)); - memset(&listenargs, 0, sizeof(listenargs)); - memset(&sourcearg, 0, sizeof(sourcearg)); - - clconfs = list_create(); - if (!clconfs) - debugx(1, DBG_ERR, "malloc failed"); - - srvconfs = list_create(); - if (!srvconfs) - debugx(1, DBG_ERR, "malloc failed"); - - realms = list_create(); - if (!realms) - debugx(1, DBG_ERR, "malloc failed"); - - rewriteconfs = hash_create(); - if (!rewriteconfs) - debugx(1, DBG_ERR, "malloc failed"); - - if (!getgenericconfig(&cfs, NULL, -#ifdef RADPROT_UDP - "ListenUDP", CONF_MSTR, &listenargs[RAD_UDP], - "SourceUDP", CONF_STR, &sourcearg[RAD_UDP], -#endif -#ifdef RADPROT_TCP - "ListenTCP", CONF_MSTR, &listenargs[RAD_TCP], - "SourceTCP", CONF_STR, &sourcearg[RAD_TCP], -#endif -#ifdef RADPROT_TLS - "ListenTLS", CONF_MSTR, &listenargs[RAD_TLS], - "SourceTLS", CONF_STR, &sourcearg[RAD_TLS], -#endif -#ifdef RADPROT_DTLS - "ListenDTLS", CONF_MSTR, &listenargs[RAD_DTLS], - "SourceDTLS", CONF_STR, &sourcearg[RAD_DTLS], -#endif - "TTLAttribute", CONF_STR, &options.ttlattr, - "addTTL", CONF_LINT, &addttl, - "LogLevel", CONF_LINT, &loglevel, - "LogDestination", CONF_STR, &options.logdestination, - "LoopPrevention", CONF_BLN, &options.loopprevention, - "Client", CONF_CBK, confclient_cb, NULL, - "Server", CONF_CBK, confserver_cb, NULL, - "Realm", CONF_CBK, confrealm_cb, NULL, -#if defined(RADPROT_TLS) || defined(RADPROT_DTLS) - "TLS", CONF_CBK, conftls_cb, NULL, -#endif - "Rewrite", CONF_CBK, confrewrite_cb, NULL, - NULL - )) - debugx(1, DBG_ERR, "configuration error"); - - if (loglevel != LONG_MIN) { - if (loglevel < 1 || loglevel > 5) - debugx(1, DBG_ERR, "error in %s, value of option LogLevel is %d, must be 1, 2, 3, 4 or 5", configfile, loglevel); - options.loglevel = (uint8_t)loglevel; - } - if (addttl != LONG_MIN) { - if (addttl < 1 || addttl > 255) - debugx(1, DBG_ERR, "error in %s, value of option addTTL is %d, must be 1-255", configfile, addttl); - options.addttl = (uint8_t)addttl; - } - if (!setttlattr(&options, DEFAULT_TTL_ATTR)) - debugx(1, DBG_ERR, "Failed to set TTLAttribute, exiting"); - - for (i = 0; i < RAD_PROTOCOUNT; i++) - if (listenargs[i] || sourcearg[i]) - setprotoopts(i, listenargs[i], sourcearg[i]); -} - -void getargs(int argc, char **argv, uint8_t *foreground, uint8_t *pretend, uint8_t *loglevel, char **configfile, char **pidfile) { - int c; - - while ((c = getopt(argc, argv, "c:d:i:fpv")) != -1) { - switch (c) { - case 'c': - *configfile = optarg; - break; - case 'd': - if (strlen(optarg) != 1 || *optarg < '1' || *optarg > '5') - debugx(1, DBG_ERR, "Debug level must be 1, 2, 3, 4 or 5, not %s", optarg); - *loglevel = *optarg - '0'; - break; - case 'f': - *foreground = 1; - break; - case 'i': - *pidfile = optarg; - break; - case 'p': - *pretend = 1; - break; - case 'v': - debug(DBG_ERR, "radsecproxy revision %s", PACKAGE_VERSION); - debug(DBG_ERR, "This binary was built with support for the following transports:"); -#ifdef RADPROT_UDP - debug(DBG_ERR, " UDP"); -#endif -#ifdef RADPROT_TCP - debug(DBG_ERR, " TCP"); -#endif -#ifdef RADPROT_TLS - debug(DBG_ERR, " TLS"); -#endif -#ifdef RADPROT_DTLS - debug(DBG_ERR, " DTLS"); -#endif - exit(0); - default: - goto usage; - } - } - if (!(argc - optind)) - return; - -usage: - debugx(1, DBG_ERR, "Usage:\n%s [ -c configfile ] [ -d debuglevel ] [ -f ] [ -i pidfile ] [ -p ] [ -v ]", argv[0]); -} - -#ifdef SYS_SOLARIS9 -int daemon(int a, int b) { - int i; - - if (fork()) - exit(0); - - setsid(); - - for (i = 0; i < 3; i++) { - close(i); - open("/dev/null", O_RDWR); - } - return 1; -} -#endif - -void *sighandler(void *arg) { - sigset_t sigset; - int sig; - - for(;;) { - sigemptyset(&sigset); - sigaddset(&sigset, SIGHUP); - sigaddset(&sigset, SIGPIPE); - sigwait(&sigset, &sig); - switch (sig) { - case 0: - /* completely ignoring this */ - break; - case SIGHUP: - debug(DBG_INFO, "sighandler: got SIGHUP"); - debug_reopen_log(); - break; - case SIGPIPE: - debug(DBG_WARN, "sighandler: got SIGPIPE, TLS write error?"); - break; - default: - debug(DBG_WARN, "sighandler: ignoring signal %d", sig); - } - } -} - -int createpidfile(const char *pidfile) { - int r = 0; - FILE *f = fopen(pidfile, "w"); - if (f) - r = fprintf(f, "%ld\n", (long) getpid()); - return f && !fclose(f) && r >= 0; -} - -int main(int argc, char **argv) { - pthread_t sigth; - sigset_t sigset; - struct list_node *entry; - uint8_t foreground = 0, pretend = 0, loglevel = 0; - char *configfile = NULL, *pidfile = NULL; - struct clsrvconf *srvconf; - int i; - - debug_init("radsecproxy"); - debug_set_level(DEBUG_LEVEL); - - for (i = 0; i < RAD_PROTOCOUNT; i++) - protodefs[i] = protoinits[i](i); - - /* needed even if no TLS/DTLS transport */ - sslinit(); - - getargs(argc, argv, &foreground, &pretend, &loglevel, &configfile, &pidfile); - if (loglevel) - debug_set_level(loglevel); - getmainconfig(configfile ? configfile : CONFIG_MAIN); - if (loglevel) - options.loglevel = loglevel; - else if (options.loglevel) - debug_set_level(options.loglevel); - if (!foreground) - debug_set_destination(options.logdestination ? options.logdestination : "x-syslog:///"); - free(options.logdestination); - - if (!list_first(clconfs)) - debugx(1, DBG_ERR, "No clients configured, nothing to do, exiting"); - if (!list_first(realms)) - debugx(1, DBG_ERR, "No realms configured, nothing to do, exiting"); - - if (pretend) - debugx(0, DBG_ERR, "All OK so far; exiting since only pretending"); - - if (!foreground && (daemon(0, 0) < 0)) - debugx(1, DBG_ERR, "daemon() failed: %s", strerror(errno)); - - debug_timestamp_on(); - debug(DBG_INFO, "radsecproxy revision %s starting", PACKAGE_VERSION); - if (pidfile && !createpidfile(pidfile)) - debugx(1, DBG_ERR, "failed to create pidfile %s: %s", pidfile, strerror(errno)); - - sigemptyset(&sigset); - /* exit on all but SIGHUP|SIGPIPE, ignore more? */ - sigaddset(&sigset, SIGHUP); - sigaddset(&sigset, SIGPIPE); - pthread_sigmask(SIG_BLOCK, &sigset, NULL); - pthread_create(&sigth, NULL, sighandler, NULL); - - for (entry = list_first(srvconfs); entry; entry = list_next(entry)) { - srvconf = (struct clsrvconf *)entry->data; - if (srvconf->dynamiclookupcommand) - continue; - if (!addserver(srvconf)) - debugx(1, DBG_ERR, "failed to add server"); - if (pthread_create(&srvconf->servers->clientth, NULL, clientwr, - (void *)(srvconf->servers))) - debugx(1, DBG_ERR, "pthread_create failed"); - } - - for (i = 0; i < RAD_PROTOCOUNT; i++) { - if (!protodefs[i]) - continue; - if (protodefs[i]->initextra) - protodefs[i]->initextra(); - if (find_clconf_type(i, NULL)) - createlisteners(i); - } - - /* just hang around doing nothing, anything to do here? */ - for (;;) - sleep(1000); -} - -/* Local Variables: */ -/* c-file-style: "stroustrup" */ -/* End: */ |