#include <freeradius-devel/ident.h>
RCSID("$Id$")
#include <freeradius-devel/radiusd.h>
#include <freeradius-devel/rad_assert.h>
#include <sys/stat.h>
#include <ctype.h>
#include <fcntl.h>
#ifdef HAVE_REGEX_H
#include <regex.h>
#ifndef REG_EXTENDED
#define REG_EXTENDED (0)
#endif
#ifndef REG_NOSUB
#define REG_NOSUB (0)
#endif
#ifndef REG_ICASE
#define REG_ICASE (0)
#endif
#endif
static rbtree_t *realms_byname = NULL;
#ifdef HAVE_REGEX_H
typedef struct realm_regex_t {
REALM *realm;
struct realm_regex_t *next;
} realm_regex_t;
static realm_regex_t *realms_regex = NULL;
#endif
typedef struct realm_config_t {
CONF_SECTION *cs;
int dead_time;
int retry_count;
int retry_delay;
int fallback;
int wake_all_if_all_dead;
} realm_config_t;
static realm_config_t *realm_config = NULL;
#ifdef WITH_PROXY
static rbtree_t *home_servers_byaddr = NULL;
static rbtree_t *home_servers_byname = NULL;
#ifdef WITH_STATS
static int home_server_max_number = 0;
static rbtree_t *home_servers_bynumber = NULL;
#endif
static rbtree_t *home_pools_byname = NULL;
static const CONF_PARSER proxy_config[] = {
{ "retry_delay", PW_TYPE_INTEGER,
offsetof(realm_config_t, retry_delay),
NULL, Stringify(RETRY_DELAY) },
{ "retry_count", PW_TYPE_INTEGER,
offsetof(realm_config_t, retry_count),
NULL, Stringify(RETRY_COUNT) },
{ "default_fallback", PW_TYPE_BOOLEAN,
offsetof(realm_config_t, fallback),
NULL, "no" },
{ "dead_time", PW_TYPE_INTEGER,
offsetof(realm_config_t, dead_time),
NULL, Stringify(DEAD_TIME) },
{ "wake_all_if_all_dead", PW_TYPE_BOOLEAN,
offsetof(realm_config_t, wake_all_if_all_dead),
NULL, "no" },
#ifdef WITH_POST_PROXY_AUTHORIZE
{ "post_proxy_authorize", PW_TYPE_BOOLEAN, 0,
&mainconfig.post_proxy_authorize, "yes" },
#endif
{ NULL, -1, 0, NULL, NULL }
};
#endif
static int realm_name_cmp(const void *one, const void *two)
{
const REALM *a = one;
const REALM *b = two;
return strcasecmp(a->name, b->name);
}
#ifdef WITH_PROXY
static int home_server_name_cmp(const void *one, const void *two)
{
const home_server *a = one;
const home_server *b = two;
if (a->type < b->type) return -1;
if (a->type > b->type) return +1;
return strcasecmp(a->name, b->name);
}
static int home_server_addr_cmp(const void *one, const void *two)
{
const home_server *a = one;
const home_server *b = two;
if (a->server && !b->server) return -1;
if (!a->server && b->server) return +1;
if (a->server && b->server) {
int rcode = a->type - b->type;
if (rcode != 0) return rcode;
return strcmp(a->server, b->server);
}
if (a->port < b->port) return -1;
if (a->port > b->port) return +1;
return fr_ipaddr_cmp(&a->ipaddr, &b->ipaddr);
}
#ifdef WITH_STATS
static int home_server_number_cmp(const void *one, const void *two)
{
const home_server *a = one;
const home_server *b = two;
return (a->number - b->number);
}
#endif
static int home_pool_name_cmp(const void *one, const void *two)
{
const home_pool_t *a = one;
const home_pool_t *b = two;
if (a->server_type < b->server_type) return -1;
if (a->server_type > b->server_type) return +1;
return strcasecmp(a->name, b->name);
}
static size_t xlat_home_server(UNUSED void *instance, REQUEST *request,
char *fmt, char *out, size_t outlen,
UNUSED RADIUS_ESCAPE_STRING func)
{
const char *value = NULL;
CONF_PAIR *cp;
if (!fmt || !out || (outlen < 1)) return 0;
if (!request || !request->home_server) {
*out = '\0';
return 0;
}
cp = cf_pair_find(request->home_server->cs, fmt);
if (!cp || !(value = cf_pair_value(cp))) {
*out = '\0';
return 0;
}
strlcpy(out, value, outlen);
return strlen(out);
}
static size_t xlat_server_pool(UNUSED void *instance, REQUEST *request,
char *fmt, char *out, size_t outlen,
UNUSED RADIUS_ESCAPE_STRING func)
{
const char *value = NULL;
CONF_PAIR *cp;
if (!fmt || !out || (outlen < 1)) return 0;
if (!request || !request->home_pool) {
*out = '\0';
return 0;
}
cp = cf_pair_find(request->home_pool->cs, fmt);
if (!cp || !(value = cf_pair_value(cp))) {
*out = '\0';
return 0;
}
strlcpy(out, value, outlen);
return strlen(out);
}
#endif
void realms_free(void)
{
#ifdef WITH_PROXY
#ifdef WITH_STATS
rbtree_free(home_servers_bynumber);
home_servers_bynumber = NULL;
#endif
rbtree_free(home_servers_byname);
home_servers_byname = NULL;
rbtree_free(home_servers_byaddr);
home_servers_byaddr = NULL;
rbtree_free(home_pools_byname);
home_pools_byname = NULL;
#endif
rbtree_free(realms_byname);
realms_byname = NULL;
#ifdef HAVE_REGEX_H
if (realms_regex) {
realm_regex_t *this, *next;
for (this = realms_regex; this != NULL; this = next) {
next = this->next;
free(this->realm);
free(this);
}
realms_regex = NULL;
}
#endif
free(realm_config);
realm_config = NULL;
}
#ifdef WITH_PROXY
static struct in_addr hs_ip4addr;
static struct in6_addr hs_ip6addr;
static char *hs_srcipaddr = NULL;
static char *hs_type = NULL;
static char *hs_check = NULL;
static char *hs_virtual_server = NULL;
#ifdef WITH_COA
static CONF_PARSER home_server_coa[] = {
{ "irt", PW_TYPE_INTEGER,
offsetof(home_server, coa_irt), 0, Stringify(2) },
{ "mrt", PW_TYPE_INTEGER,
offsetof(home_server, coa_mrt), 0, Stringify(16) },
{ "mrc", PW_TYPE_INTEGER,
offsetof(home_server, coa_mrc), 0, Stringify(5) },
{ "mrd", PW_TYPE_INTEGER,
offsetof(home_server, coa_mrd), 0, Stringify(30) },
{ NULL, -1, 0, NULL, NULL }
};
#endif
static CONF_PARSER home_server_config[] = {
{ "ipaddr", PW_TYPE_IPADDR,
0, &hs_ip4addr, NULL },
{ "ipv6addr", PW_TYPE_IPV6ADDR,
0, &hs_ip6addr, NULL },
{ "virtual_server", PW_TYPE_STRING_PTR,
0, &hs_virtual_server, NULL },
{ "port", PW_TYPE_INTEGER,
offsetof(home_server,port), NULL, "0" },
{ "type", PW_TYPE_STRING_PTR,
0, &hs_type, NULL },
{ "secret", PW_TYPE_STRING_PTR,
offsetof(home_server,secret), NULL, NULL},
{ "src_ipaddr", PW_TYPE_STRING_PTR,
0, &hs_srcipaddr, NULL },
{ "response_window", PW_TYPE_INTEGER,
offsetof(home_server,response_window), NULL, "30" },
{ "no_response_fail", PW_TYPE_BOOLEAN,
offsetof(home_server,no_response_fail), NULL, NULL },
{ "max_outstanding", PW_TYPE_INTEGER,
offsetof(home_server,max_outstanding), NULL, "65536" },
{ "require_message_authenticator", PW_TYPE_BOOLEAN,
offsetof(home_server, message_authenticator), 0, NULL },
{ "zombie_period", PW_TYPE_INTEGER,
offsetof(home_server,zombie_period), NULL, "40" },
{ "status_check", PW_TYPE_STRING_PTR,
0, &hs_check, "none" },
{ "ping_check", PW_TYPE_STRING_PTR,
0, &hs_check, NULL },
{ "ping_interval", PW_TYPE_INTEGER,
offsetof(home_server,ping_interval), NULL, "30" },
{ "check_interval", PW_TYPE_INTEGER,
offsetof(home_server,ping_interval), NULL, "30" },
{ "num_answers_to_alive", PW_TYPE_INTEGER,
offsetof(home_server,num_pings_to_alive), NULL, "3" },
{ "num_pings_to_alive", PW_TYPE_INTEGER,
offsetof(home_server,num_pings_to_alive), NULL, "3" },
{ "revive_interval", PW_TYPE_INTEGER,
offsetof(home_server,revive_interval), NULL, "300" },
{ "status_check_timeout", PW_TYPE_INTEGER,
offsetof(home_server,ping_timeout), NULL, "4" },
{ "username", PW_TYPE_STRING_PTR,
offsetof(home_server,ping_user_name), NULL, NULL},
{ "password", PW_TYPE_STRING_PTR,
offsetof(home_server,ping_user_password), NULL, NULL},
#ifdef WITH_STATS
{ "historic_average_window", PW_TYPE_INTEGER,
offsetof(home_server,ema.window), NULL, NULL },
#endif
#ifdef WITH_COA
{ "coa", PW_TYPE_SUBSECTION, 0, NULL, (const void *) home_server_coa },
#endif
{ NULL, -1, 0, NULL, NULL }
};
static void null_free(UNUSED void *data)
{
}
static int home_server_add(realm_config_t *rc, CONF_SECTION *cs)
{
const char *name2;
home_server *home;
int dual = FALSE;
CONF_PAIR *cp;
free(hs_virtual_server);
hs_virtual_server = NULL;
name2 = cf_section_name2(cs);
if (!name2) {
cf_log_err(cf_sectiontoitem(cs),
"Home server section is missing a name.");
return 0;
}
home = rad_malloc(sizeof(*home));
memset(home, 0, sizeof(*home));
home->name = name2;
home->cs = cs;
home->last_packet = time(NULL);
home->no_response_fail = 2;
memset(&hs_ip4addr, 0, sizeof(hs_ip4addr));
memset(&hs_ip6addr, 0, sizeof(hs_ip6addr));
if (cf_section_parse(cs, home, home_server_config) < 0) {
free(home);
return 0;
}
if (cf_pair_find(cs, "ipaddr")) {
home->ipaddr.af = AF_INET;
home->ipaddr.ipaddr.ip4addr = hs_ip4addr;
} else if (cf_pair_find(cs, "ipv6addr")) {
home->ipaddr.af = AF_INET6;
home->ipaddr.ipaddr.ip6addr = hs_ip6addr;
} else if ((cp = cf_pair_find(cs, "virtual_server")) != NULL) {
home->ipaddr.af = AF_UNSPEC;
home->server = cf_pair_value(cp);
if (!home->server) {
cf_log_err(cf_sectiontoitem(cs),
"Invalid value for virtual_server");
goto error;
}
if (!cf_section_sub_find_name2(rc->cs, "server", home->server)) {
cf_log_err(cf_sectiontoitem(cs),
"No such server %s", home->server);
goto error;
}
home->secret = strdup("");
goto skip_port;
} else {
cf_log_err(cf_sectiontoitem(cs),
"No ipaddr, ipv6addr, or virtual_server defined for home server \"%s\".",
name2);
error:
free(home);
free(hs_type);
hs_type = NULL;
free(hs_check);
hs_check = NULL;
free(hs_srcipaddr);
hs_srcipaddr = NULL;
return 0;
}
if (!home->port || (home->port > 65535)) {
cf_log_err(cf_sectiontoitem(cs),
"No port, or invalid port defined for home server %s.",
name2);
goto error;
}
if (0) {
cf_log_err(cf_sectiontoitem(cs),
"Fatal error! Home server %s is ourselves!",
name2);
goto error;
}
if (!home->secret) {
cf_log_err(cf_sectiontoitem(cs),
"No shared secret defined for home server %s.",
name2);
goto error;
}
skip_port:
if (!hs_type) hs_type = strdup("auth+acct");
if (strcasecmp(hs_type, "auth") == 0) {
home->type = HOME_TYPE_AUTH;
if (home->no_response_fail == 2) home->no_response_fail = 0;
} else if (strcasecmp(hs_type, "acct") == 0) {
home->type = HOME_TYPE_ACCT;
if (home->no_response_fail == 2) home->no_response_fail = 1;
} else if (strcasecmp(hs_type, "auth+acct") == 0) {
home->type = HOME_TYPE_AUTH;
dual = TRUE;
#ifdef WITH_COA
} else if (strcasecmp(hs_type, "coa") == 0) {
home->type = HOME_TYPE_COA;
dual = FALSE;
if (home->server != NULL) {
cf_log_err(cf_sectiontoitem(cs),
"Home servers of type \"coa\" cannot point to a virtual server");
goto error;
}
#endif
} else {
cf_log_err(cf_sectiontoitem(cs),
"Invalid type \"%s\" for home server %s.",
hs_type, name2);
goto error;
}
free(hs_type);
hs_type = NULL;
if (!hs_check || (strcasecmp(hs_check, "none") == 0)) {
home->ping_check = HOME_PING_CHECK_NONE;
} else if (strcasecmp(hs_check, "status-server") == 0) {
home->ping_check = HOME_PING_CHECK_STATUS_SERVER;
} else if (strcasecmp(hs_check, "request") == 0) {
home->ping_check = HOME_PING_CHECK_REQUEST;
} else {
cf_log_err(cf_sectiontoitem(cs),
"Invalid ping_check \"%s\" for home server %s.",
hs_check, name2);
goto error;
}
free(hs_check);
hs_check = NULL;
if ((home->ping_check != HOME_PING_CHECK_NONE) &&
(home->ping_check != HOME_PING_CHECK_STATUS_SERVER)) {
if (!home->ping_user_name) {
cf_log_err(cf_sectiontoitem(cs), "You must supply a user name to enable ping checks");
goto error;
}
if ((home->type == HOME_TYPE_AUTH) &&
!home->ping_user_password) {
cf_log_err(cf_sectiontoitem(cs), "You must supply a password to enable ping checks");
goto error;
}
}
if ((home->ipaddr.af != AF_UNSPEC) &&
rbtree_finddata(home_servers_byaddr, home)) {
cf_log_err(cf_sectiontoitem(cs), "Duplicate home server");
goto error;
}
if (hs_srcipaddr && (home->ipaddr.af != AF_UNSPEC)) {
if (ip_hton(hs_srcipaddr, home->ipaddr.af, &home->src_ipaddr) < 0) {
cf_log_err(cf_sectiontoitem(cs), "Failed parsing src_ipaddr");
goto error;
}
}
if (home->src_ipaddr.af == AF_UNSPEC) {
home->src_ipaddr.af = home->ipaddr.af;
}
free(hs_srcipaddr);
hs_srcipaddr = NULL;
if (!rbtree_insert(home_servers_byname, home)) {
cf_log_err(cf_sectiontoitem(cs),
"Internal error %d adding home server %s.",
__LINE__, name2);
goto error;
}
if ((home->ipaddr.af != AF_UNSPEC) &&
!rbtree_insert(home_servers_byaddr, home)) {
rbtree_deletebydata(home_servers_byname, home);
cf_log_err(cf_sectiontoitem(cs),
"Internal error %d adding home server %s.",
__LINE__, name2);
goto error;
}
#ifdef WITH_STATS
home->number = home_server_max_number++;
if (!rbtree_insert(home_servers_bynumber, home)) {
rbtree_deletebydata(home_servers_byname, home);
if (home->ipaddr.af != AF_UNSPEC) {
rbtree_deletebydata(home_servers_byname, home);
}
cf_log_err(cf_sectiontoitem(cs),
"Internal error %d adding home server %s.",
__LINE__, name2);
goto error;
}
#endif
if (home->max_outstanding < 8) home->max_outstanding = 8;
if (home->max_outstanding > 65536*16) home->max_outstanding = 65536*16;
if (home->ping_interval < 6) home->ping_interval = 6;
if (home->ping_interval > 120) home->ping_interval = 120;
if (home->response_window < 1) home->response_window = 1;
if (home->response_window > 60) home->response_window = 60;
if (home->zombie_period < 1) home->zombie_period = 1;
if (home->zombie_period > 120) home->zombie_period = 120;
if (home->zombie_period < home->response_window) {
home->zombie_period = home->response_window;
}
if (home->num_pings_to_alive < 3) home->num_pings_to_alive = 3;
if (home->num_pings_to_alive > 10) home->num_pings_to_alive = 10;
if (home->ping_timeout < 3) home->ping_timeout = 3;
if (home->ping_timeout > 10) home->ping_timeout = 10;
if (home->revive_interval < 60) home->revive_interval = 60;
if (home->revive_interval > 3600) home->revive_interval = 3600;
#ifdef WITH_COA
if (home->coa_irt < 1) home->coa_irt = 1;
if (home->coa_irt > 5) home->coa_irt = 5;
if (home->coa_mrc < 0) home->coa_mrc = 0;
if (home->coa_mrc > 20 ) home->coa_mrc = 20;
if (home->coa_mrt < 0) home->coa_mrt = 0;
if (home->coa_mrt > 30 ) home->coa_mrt = 30;
if (home->coa_mrd < 5) home->coa_mrd = 5;
if (home->coa_mrd > 60 ) home->coa_mrd = 60;
#endif
if (dual) {
home_server *home2 = rad_malloc(sizeof(*home2));
memcpy(home2, home, sizeof(*home2));
home2->type = HOME_TYPE_ACCT;
home2->port++;
home2->ping_user_password = NULL;
home2->cs = cs;
if (home->no_response_fail == 2) home->no_response_fail = 0;
if (home2->no_response_fail == 2) home2->no_response_fail = 1;
if (!rbtree_insert(home_servers_byname, home2)) {
cf_log_err(cf_sectiontoitem(cs),
"Internal error %d adding home server %s.",
__LINE__, name2);
free(home2);
return 0;
}
if ((home->ipaddr.af != AF_UNSPEC) &&
!rbtree_insert(home_servers_byaddr, home2)) {
rbtree_deletebydata(home_servers_byname, home2);
cf_log_err(cf_sectiontoitem(cs),
"Internal error %d adding home server %s.",
__LINE__, name2);
free(home2);
return 0;
}
#ifdef WITH_STATS
home2->number = home_server_max_number++;
if (!rbtree_insert(home_servers_bynumber, home2)) {
rbtree_deletebydata(home_servers_byname, home2);
if (home2->ipaddr.af != AF_UNSPEC) {
rbtree_deletebydata(home_servers_byname, home2);
}
cf_log_err(cf_sectiontoitem(cs),
"Internal error %d adding home server %s.",
__LINE__, name2);
free(home2);
return 0;
}
#endif
}
cf_data_add(cs, "home_server", null_free, null_free);
return 1;
}
static home_pool_t *server_pool_alloc(const char *name, home_pool_type_t type,
int server_type, int num_home_servers)
{
home_pool_t *pool;
pool = rad_malloc(sizeof(*pool) + (sizeof(pool->servers[0]) *
num_home_servers));
if (!pool) return NULL;
memset(pool, 0, sizeof(*pool) + (sizeof(pool->servers[0]) *
num_home_servers));
pool->name = name;
pool->type = type;
pool->server_type = server_type;
pool->num_home_servers = num_home_servers;
return pool;
}
static int pool_check_home_server(realm_config_t *rc, CONF_PAIR *cp,
const char *name, int server_type,
home_server **phome)
{
home_server myhome, *home;
CONF_SECTION *server_cs;
if (!name) {
cf_log_err(cf_pairtoitem(cp),
"No value given for home_server.");
return 0;
}
myhome.name = name;
myhome.type = server_type;
home = rbtree_finddata(home_servers_byname, &myhome);
if (home) {
*phome = home;
return 1;
}
server_cs = cf_section_sub_find_name2(rc->cs, "home_server", name);
if (!server_cs) {
cf_log_err(cf_pairtoitem(cp),
"Unknown home_server \"%s\".", name);
return 0;
}
home = rbtree_finddata(home_servers_byname, &myhome);
if (!home) {
return 0;
}
*phome = home;
return 1;
}
static int server_pool_add(realm_config_t *rc,
CONF_SECTION *cs, int server_type, int do_print)
{
const char *name2;
home_pool_t *pool = NULL;
const char *value;
CONF_PAIR *cp;
int num_home_servers;
home_server *home;
name2 = cf_section_name1(cs);
if (!name2 || ((strcasecmp(name2, "server_pool") != 0) &&
(strcasecmp(name2, "home_server_pool") != 0))) {
cf_log_err(cf_sectiontoitem(cs),
"Section is not a home_server_pool.");
return 0;
}
name2 = cf_section_name2(cs);
if (!name2) {
cf_log_err(cf_sectiontoitem(cs),
"Server pool section is missing a name.");
return 0;
}
num_home_servers = 0;
for (cp = cf_pair_find(cs, "home_server");
cp != NULL;
cp = cf_pair_find_next(cs, cp, "home_server")) {
num_home_servers++;
if (!pool_check_home_server(rc, cp, cf_pair_value(cp),
server_type, &home)) {
return 0;
}
}
if (num_home_servers == 0) {
cf_log_err(cf_sectiontoitem(cs),
"No home servers defined in pool %s",
name2);
goto error;
}
pool = server_pool_alloc(name2, HOME_POOL_FAIL_OVER, server_type,
num_home_servers);
pool->cs = cs;
cp = cf_pair_find(cs, "fallback");
if (cp) {
#ifdef WITH_COA
if (server_type == HOME_TYPE_COA) {
cf_log_err(cf_sectiontoitem(cs), "Home server pools of type \"coa\" cannot have a fallback virtual server.");
goto error;
}
#endif
if (!pool_check_home_server(rc, cp, cf_pair_value(cp),
server_type, &pool->fallback)) {
goto error;
}
if (!pool->fallback->server) {
cf_log_err(cf_sectiontoitem(cs), "Fallback home_server %s does NOT contain a virtual_server directive.", pool->fallback->name);
goto error;
}
}
if (do_print) cf_log_info(cs, " home_server_pool %s {", name2);
cp = cf_pair_find(cs, "type");
if (cp) {
static FR_NAME_NUMBER pool_types[] = {
{ "load-balance", HOME_POOL_LOAD_BALANCE },
{ "fail-over", HOME_POOL_FAIL_OVER },
{ "round_robin", HOME_POOL_LOAD_BALANCE },
{ "fail_over", HOME_POOL_FAIL_OVER },
{ "client-balance", HOME_POOL_CLIENT_BALANCE },
{ "client-port-balance", HOME_POOL_CLIENT_PORT_BALANCE },
{ "keyed-balance", HOME_POOL_KEYED_BALANCE },
{ NULL, 0 }
};
value = cf_pair_value(cp);
if (!value) {
cf_log_err(cf_pairtoitem(cp),
"No value given for type.");
goto error;
}
pool->type = fr_str2int(pool_types, value, 0);
if (!pool->type) {
cf_log_err(cf_pairtoitem(cp),
"Unknown type \"%s\".",
value);
goto error;
}
if (do_print) cf_log_info(cs, "\ttype = %s", value);
}
cp = cf_pair_find(cs, "virtual_server");
if (cp) {
pool->virtual_server = cf_pair_value(cp);
if (!pool->virtual_server) {
cf_log_err(cf_pairtoitem(cp), "No value given for virtual_server");
goto error;
}
if (do_print) {
cf_log_info(cs, "\tvirtual_server = %s", pool->virtual_server);
}
if (!cf_section_sub_find_name2(rc->cs, "server",
pool->virtual_server)) {
cf_log_err(cf_pairtoitem(cp), "No such server %s",
pool->virtual_server);
goto error;
}
}
num_home_servers = 0;
for (cp = cf_pair_find(cs, "home_server");
cp != NULL;
cp = cf_pair_find_next(cs, cp, "home_server")) {
home_server myhome;
value = cf_pair_value(cp);
memset(&myhome, 0, sizeof(&myhome));
myhome.name = value;
myhome.type = server_type;
home = rbtree_finddata(home_servers_byname, &myhome);
if (!home) {
DEBUG2("Internal sanity check failed");
goto error;
}
if (0) {
DEBUG2("Warning: Duplicate home server %s in server pool %s", home->name, pool->name);
continue;
}
if (do_print) cf_log_info(cs, "\thome_server = %s", home->name);
pool->servers[num_home_servers++] = home;
}
if (pool->fallback && do_print) {
cf_log_info(cs, "\tfallback = %s", pool->fallback->name);
}
if (!rbtree_insert(home_pools_byname, pool)) {
rad_assert("Internal sanity check failed");
goto error;
}
if (do_print) cf_log_info(cs, " }");
cf_data_add(cs, "home_server_pool", pool, free);
rad_assert(pool->server_type != 0);
return 1;
error:
if (do_print) cf_log_info(cs, " }");
free(pool);
return 0;
}
#endif
static int old_server_add(realm_config_t *rc, CONF_SECTION *cs,
const char *realm,
const char *name, const char *secret,
home_pool_type_t ldflag, home_pool_t **pool_p,
int type, const char *server)
{
#ifdef WITH_PROXY
int i, insert_point, num_home_servers;
home_server myhome, *home;
home_pool_t mypool, *pool;
CONF_SECTION *subcs;
#else
rc = rc;
realm = realm;
secret = secret;
ldflag = ldflag;
type = type;
server = server;
#endif
if (strcmp(name, "LOCAL") == 0) {
if (*pool_p) {
cf_log_err(cf_sectiontoitem(cs), "Realm \"%s\" cannot be both LOCAL and remote", name);
return 0;
}
return 1;
}
#ifndef WITH_PROXY
return 0;
#else
mypool.name = realm;
mypool.server_type = type;
pool = rbtree_finddata(home_pools_byname, &mypool);
if (pool) {
if (pool->type != ldflag) {
cf_log_err(cf_sectiontoitem(cs), "Inconsistent ldflag for server pool \"%s\"", name);
return 0;
}
if (pool->server_type != type) {
cf_log_err(cf_sectiontoitem(cs), "Inconsistent home server type for server pool \"%s\"", name);
return 0;
}
}
myhome.name = name;
myhome.type = type;
home = rbtree_finddata(home_servers_byname, &myhome);
if (home) {
if (secret && (strcmp(home->secret, secret) != 0)) {
cf_log_err(cf_sectiontoitem(cs), "Inconsistent shared secret for home server \"%s\"", name);
return 0;
}
if (home->type != type) {
cf_log_err(cf_sectiontoitem(cs), "Inconsistent type for home server \"%s\"", name);
return 0;
}
if (pool) for (i = 0; i < pool->num_home_servers; i++) {
if (pool->servers[i] == home) {
return 1;
}
}
}
insert_point = -1;
if (pool) {
for (i = pool->num_home_servers - 1; i >= 0; i--) {
if (pool->servers[i]) break;
if (!pool->servers[i]) {
insert_point = i;
}
}
if (insert_point < 0) {
cf_log_err(cf_sectiontoitem(cs), "No room in pool to add home server \"%s\". Please update the realm configuration to use the new-style home servers and server pools.", name);
return 0;
}
}
if (!home) {
const char *p;
char *q;
home = rad_malloc(sizeof(*home));
memset(home, 0, sizeof(*home));
home->name = name;
home->hostname = name;
home->type = type;
home->secret = secret;
home->cs = cs;
p = strchr(name, ':');
if (!p) {
if (type == HOME_TYPE_AUTH) {
home->port = PW_AUTH_UDP_PORT;
} else {
home->port = PW_ACCT_UDP_PORT;
}
p = name;
q = NULL;
} else if (p == name) {
cf_log_err(cf_sectiontoitem(cs),
"Invalid hostname %s.",
name);
free(home);
return 0;
} else {
home->port = atoi(p + 1);
if ((home->port == 0) || (home->port > 65535)) {
cf_log_err(cf_sectiontoitem(cs),
"Invalid port %s.",
p + 1);
free(home);
return 0;
}
q = rad_malloc((p - name) + 1);
memcpy(q, name, (p - name));
q[p - name] = '\0';
p = q;
}
if (!server) {
if (ip_hton(p, AF_UNSPEC, &home->ipaddr) < 0) {
cf_log_err(cf_sectiontoitem(cs),
"Failed looking up hostname %s.",
p);
free(home);
free(q);
return 0;
}
} else {
home->ipaddr.af = AF_UNSPEC;
home->server = server;
}
free(q);
home->max_outstanding = 65535*16;
home->zombie_period = rc->retry_delay * rc->retry_count;
if (home->zombie_period == 0) home->zombie_period =30;
home->response_window = home->zombie_period - 1;
home->ping_check = HOME_PING_CHECK_NONE;
home->revive_interval = rc->dead_time;
if (rbtree_finddata(home_servers_byaddr, home)) {
cf_log_err(cf_sectiontoitem(cs), "Home server %s has the same IP address and/or port as another home server.", name);
free(home);
return 0;
}
if (!rbtree_insert(home_servers_byname, home)) {
cf_log_err(cf_sectiontoitem(cs), "Internal error %d adding home server %s.", __LINE__, name);
free(home);
return 0;
}
if (!rbtree_insert(home_servers_byaddr, home)) {
rbtree_deletebydata(home_servers_byname, home);
cf_log_err(cf_sectiontoitem(cs), "Internal error %d adding home server %s.", __LINE__, name);
free(home);
return 0;
}
#ifdef WITH_STATS
home->number = home_server_max_number++;
if (!rbtree_insert(home_servers_bynumber, home)) {
rbtree_deletebydata(home_servers_byname, home);
if (home->ipaddr.af != AF_UNSPEC) {
rbtree_deletebydata(home_servers_byname, home);
}
cf_log_err(cf_sectiontoitem(cs),
"Internal error %d adding home server %s.",
__LINE__, name);
free(home);
return 0;
}
#endif
}
if (insert_point >= 0) {
rad_assert(pool != NULL);
pool->servers[insert_point] = home;
return 1;
}
rad_assert(pool == NULL);
rad_assert(home != NULL);
num_home_servers = 0;
for (subcs = cf_section_find_next(cs, NULL, "realm");
subcs != NULL;
subcs = cf_section_find_next(cs, subcs, "realm")) {
const char *this = cf_section_name2(subcs);
if (!this || (strcmp(this, realm) != 0)) continue;
num_home_servers++;
}
if (num_home_servers == 0) {
cf_log_err(cf_sectiontoitem(cs), "Internal error counting pools for home server %s.", name);
free(home);
return 0;
}
pool = server_pool_alloc(realm, ldflag, type, num_home_servers);
pool->cs = cs;
pool->servers[0] = home;
if (!rbtree_insert(home_pools_byname, pool)) {
rad_assert("Internal sanity check failed");
return 0;
}
*pool_p = pool;
return 1;
#endif
}
static int old_realm_config(realm_config_t *rc, CONF_SECTION *cs, REALM *r)
{
const char *host;
const char *secret = NULL;
home_pool_type_t ldflag;
CONF_PAIR *cp;
cp = cf_pair_find(cs, "ldflag");
ldflag = HOME_POOL_FAIL_OVER;
if (cp) {
host = cf_pair_value(cp);
if (!host) {
cf_log_err(cf_pairtoitem(cp), "No value specified for ldflag");
return 0;
}
if (strcasecmp(host, "fail_over") == 0) {
cf_log_info(cs, "\tldflag = fail_over");
} else if (strcasecmp(host, "round_robin") == 0) {
ldflag = HOME_POOL_LOAD_BALANCE;
cf_log_info(cs, "\tldflag = round_robin");
} else {
cf_log_err(cf_sectiontoitem(cs), "Unknown value \"%s\" for ldflag", host);
return 0;
}
}
cp = cf_pair_find(cs, "authhost");
if (cp) {
host = cf_pair_value(cp);
if (!host) {
cf_log_err(cf_pairtoitem(cp), "No value specified for authhost");
return 0;
}
if (strcmp(host, "LOCAL") != 0) {
cp = cf_pair_find(cs, "secret");
if (!cp) {
cf_log_err(cf_sectiontoitem(cs), "No shared secret supplied for realm: %s", r->name);
return 0;
}
secret = cf_pair_value(cp);
if (!secret) {
cf_log_err(cf_pairtoitem(cp), "No value specified for secret");
return 0;
}
}
cf_log_info(cs, "\tauthhost = %s", host);
if (!old_server_add(rc, cs, r->name, host, secret, ldflag,
&r->auth_pool, HOME_TYPE_AUTH, NULL)) {
return 0;
}
}
cp = cf_pair_find(cs, "accthost");
if (cp) {
host = cf_pair_value(cp);
if (!host) {
cf_log_err(cf_pairtoitem(cp), "No value specified for accthost");
return 0;
}
if ((strcmp(host, "LOCAL") != 0) && !secret) {
cp = cf_pair_find(cs, "secret");
if (!cp) {
cf_log_err(cf_sectiontoitem(cs), "No shared secret supplied for realm: %s", r->name);
return 0;
}
secret = cf_pair_value(cp);
if (!secret) {
cf_log_err(cf_pairtoitem(cp), "No value specified for secret");
return 0;
}
}
cf_log_info(cs, "\taccthost = %s", host);
if (!old_server_add(rc, cs, r->name, host, secret, ldflag,
&r->acct_pool, HOME_TYPE_ACCT, NULL)) {
return 0;
}
}
cp = cf_pair_find(cs, "virtual_server");
if (cp) {
host = cf_pair_value(cp);
if (!host) {
cf_log_err(cf_pairtoitem(cp), "No value specified for virtual_server");
return 0;
}
cf_log_info(cs, "\tvirtual_server = %s", host);
if (!old_server_add(rc, cs, r->name, host, "", ldflag,
&r->auth_pool, HOME_TYPE_AUTH, host)) {
return 0;
}
if (!old_server_add(rc, cs, r->name, host, "", ldflag,
&r->acct_pool, HOME_TYPE_ACCT, host)) {
return 0;
}
}
if (secret) cf_log_info(cs, "\tsecret = %s", secret);
return 1;
}
#ifdef WITH_PROXY
static int add_pool_to_realm(realm_config_t *rc, CONF_SECTION *cs,
const char *name, home_pool_t **dest,
int server_type, int do_print)
{
home_pool_t mypool, *pool;
mypool.name = name;
mypool.server_type = server_type;
pool = rbtree_finddata(home_pools_byname, &mypool);
if (!pool) {
CONF_SECTION *pool_cs;
pool_cs = cf_section_sub_find_name2(rc->cs,
"home_server_pool",
name);
if (!pool_cs) {
pool_cs = cf_section_sub_find_name2(rc->cs,
"server_pool",
name);
}
if (!pool_cs) {
cf_log_err(cf_sectiontoitem(cs), "Failed to find home_server_pool \"%s\"", name);
return 0;
}
if (!server_pool_add(rc, pool_cs, server_type, do_print)) {
return 0;
}
pool = rbtree_finddata(home_pools_byname, &mypool);
if (!pool) {
radlog(L_ERR, "Internal sanity check failed in add_pool_to_realm");
return 0;
}
}
if (pool->server_type != server_type) {
cf_log_err(cf_sectiontoitem(cs), "Incompatible home_server_pool \"%s\" (mixed auth_pool / acct_pool)", name);
return 0;
}
*dest = pool;
return 1;
}
#endif
static int realm_add(realm_config_t *rc, CONF_SECTION *cs)
{
const char *name2;
REALM *r = NULL;
CONF_PAIR *cp;
#ifdef WITH_PROXY
home_pool_t *auth_pool, *acct_pool;
const char *auth_pool_name, *acct_pool_name;
#endif
name2 = cf_section_name1(cs);
if (!name2 || (strcasecmp(name2, "realm") != 0)) {
cf_log_err(cf_sectiontoitem(cs), "Section is not a realm.");
return 0;
}
name2 = cf_section_name2(cs);
if (!name2) {
cf_log_err(cf_sectiontoitem(cs), "Realm section is missing the realm name.");
return 0;
}
#ifdef WITH_PROXY
auth_pool = acct_pool = NULL;
auth_pool_name = acct_pool_name = NULL;
cp = cf_pair_find(cs, "pool");
if (!cp) cp = cf_pair_find(cs, "home_server_pool");
if (cp) auth_pool_name = cf_pair_value(cp);
if (cp && auth_pool_name) {
acct_pool_name = auth_pool_name;
if (!add_pool_to_realm(rc, cs,
auth_pool_name, &auth_pool,
HOME_TYPE_AUTH, 1)) {
return 0;
}
if (!add_pool_to_realm(rc, cs,
auth_pool_name, &acct_pool,
HOME_TYPE_ACCT, 0)) {
return 0;
}
}
cp = cf_pair_find(cs, "auth_pool");
if (cp) auth_pool_name = cf_pair_value(cp);
if (cp && auth_pool_name) {
if (auth_pool) {
cf_log_err(cf_sectiontoitem(cs), "Cannot use \"pool\" and \"auth_pool\" at the same time.");
return 0;
}
if (!add_pool_to_realm(rc, cs,
auth_pool_name, &auth_pool,
HOME_TYPE_AUTH, 1)) {
return 0;
}
}
cp = cf_pair_find(cs, "acct_pool");
if (cp) acct_pool_name = cf_pair_value(cp);
if (cp && acct_pool_name) {
int do_print = TRUE;
if (acct_pool) {
cf_log_err(cf_sectiontoitem(cs), "Cannot use \"pool\" and \"acct_pool\" at the same time.");
return 0;
}
if (!auth_pool ||
(strcmp(auth_pool_name, acct_pool_name) != 0)) {
do_print = TRUE;
}
if (!add_pool_to_realm(rc, cs,
acct_pool_name, &acct_pool,
HOME_TYPE_ACCT, do_print)) {
return 0;
}
}
#endif
cf_log_info(cs, " realm %s {", name2);
#ifdef WITH_PROXY
r = realm_find2(name2);
if (r && (strcmp(r->name, name2) == 0)) {
if (cf_pair_find(cs, "auth_pool") ||
cf_pair_find(cs, "acct_pool")) {
cf_log_err(cf_sectiontoitem(cs), "Duplicate realm \"%s\"", name2);
goto error;
}
if (!old_realm_config(rc, cs, r)) {
goto error;
}
cf_log_info(cs, " } # realm %s", name2);
return 1;
}
#endif
#ifdef HAVE_REGEX_H
if (name2[0] == '~') {
int rcode;
regex_t reg;
rcode = regcomp(®, name2 + 1,
REG_EXTENDED | REG_NOSUB | REG_ICASE);
if (rcode != 0) {
char buffer[256];
regerror(rcode, ®, buffer, sizeof(buffer));
cf_log_err(cf_sectiontoitem(cs),
"Invalid regex \"%s\": %s",
name2 + 1, buffer);
goto error;
}
regfree(®);
}
#endif
r = rad_malloc(sizeof(*r));
memset(r, 0, sizeof(*r));
r->name = name2;
r->striprealm = 1;
#ifdef WITH_PROXY
r->auth_pool = auth_pool;
r->acct_pool = acct_pool;
if (auth_pool_name &&
(auth_pool_name == acct_pool_name)) {
cf_log_info(cs, "\tpool = %s", auth_pool_name);
} else {
if (auth_pool_name) cf_log_info(cs, "\tauth_pool = %s", auth_pool_name);
if (acct_pool_name) cf_log_info(cs, "\tacct_pool = %s", acct_pool_name);
}
#endif
cp = cf_pair_find(cs, "nostrip");
if (cp && (cf_pair_value(cp) == NULL)) {
r->striprealm = 0;
cf_log_info(cs, "\tnostrip");
}
if (r->auth_pool || r->acct_pool) {
if (((cp = cf_pair_find(cs, "authhost")) != NULL) ||
((cp = cf_pair_find(cs, "accthost")) != NULL) ||
((cp = cf_pair_find(cs, "secret")) != NULL) ||
((cp = cf_pair_find(cs, "ldflag")) != NULL)) {
DEBUG2("WARNING: Ignoring old-style configuration entry \"%s\" in realm \"%s\"", cf_pair_attr(cp), r->name);
}
} else if (!old_realm_config(rc, cs, r)) {
goto error;
}
#ifdef HAVE_REGEX_H
if (name2[0] == '~') {
realm_regex_t *rr, **last;
rr = rad_malloc(sizeof(*rr));
last = &realms_regex;
while (*last) last = &((*last)->next);
r->name = name2;
rr->realm = r;
rr->next = NULL;
*last = rr;
cf_log_info(cs, " }");
return 1;
}
#endif
if (!rbtree_insert(realms_byname, r)) {
rad_assert("Internal sanity check failed");
goto error;
}
cf_log_info(cs, " }");
return 1;
error:
cf_log_info(cs, " } # realm %s", name2);
free(r);
return 0;
}
#ifdef WITH_COA
static const FR_NAME_NUMBER home_server_types[] = {
{ "auth", HOME_TYPE_AUTH },
{ "auth+acct", HOME_TYPE_AUTH },
{ "acct", HOME_TYPE_ACCT },
{ "coa", HOME_TYPE_COA },
{ NULL, 0 }
};
static int pool_peek_type(CONF_SECTION *config, CONF_SECTION *cs)
{
int home;
const char *name, *type;
CONF_PAIR *cp;
CONF_SECTION *server_cs;
cp = cf_pair_find(cs, "home_server");
if (!cp) {
cf_log_err(cf_sectiontoitem(cs), "Pool does not contain a \"home_server\" entry");
return HOME_TYPE_INVALID;
}
name = cf_pair_value(cp);
if (!name) {
cf_log_err(cf_pairtoitem(cp), "home_server entry does not reference a home server");
return HOME_TYPE_INVALID;
}
server_cs = cf_section_sub_find_name2(config, "home_server", name);
if (!server_cs) {
cf_log_err(cf_pairtoitem(cp), "home_server \"%s\" does not exist", name);
return HOME_TYPE_INVALID;
}
cp = cf_pair_find(server_cs, "type");
if (!cp) {
cf_log_err(cf_sectiontoitem(server_cs), "home_server %s does not contain a \"type\" entry", name);
return HOME_TYPE_INVALID;
}
type = cf_pair_value(cp);
if (!type) {
cf_log_err(cf_sectiontoitem(server_cs), "home_server %s contains an empty \"type\" entry", name);
return HOME_TYPE_INVALID;
}
home = fr_str2int(home_server_types, type, HOME_TYPE_INVALID);
if (home == HOME_TYPE_INVALID) {
cf_log_err(cf_sectiontoitem(server_cs), "home_server %s contains an invalid \"type\" entry of value \"%s\"", name, type);
return HOME_TYPE_INVALID;
}
return home;
}
#endif
int realms_init(CONF_SECTION *config)
{
CONF_SECTION *cs;
realm_config_t *rc, *old_rc;
if (realms_byname) return 1;
realms_byname = rbtree_create(realm_name_cmp, free, 0);
if (!realms_byname) {
realms_free();
return 0;
}
#ifdef WITH_PROXY
home_servers_byaddr = rbtree_create(home_server_addr_cmp, free, 0);
if (!home_servers_byaddr) {
realms_free();
return 0;
}
home_servers_byname = rbtree_create(home_server_name_cmp, NULL, 0);
if (!home_servers_byname) {
realms_free();
return 0;
}
#ifdef WITH_STATS
home_servers_bynumber = rbtree_create(home_server_number_cmp, NULL, 0);
if (!home_servers_bynumber) {
realms_free();
return 0;
}
#endif
home_pools_byname = rbtree_create(home_pool_name_cmp, NULL, 0);
if (!home_pools_byname) {
realms_free();
return 0;
}
#endif
rc = rad_malloc(sizeof(*rc));
memset(rc, 0, sizeof(*rc));
rc->cs = config;
#ifdef WITH_PROXY
cs = cf_subsection_find_next(config, NULL, "proxy");
if (cs) {
cf_section_parse(cs, rc, proxy_config);
} else {
rc->dead_time = DEAD_TIME;
rc->retry_count = RETRY_COUNT;
rc->retry_delay = RETRY_DELAY;
rc->fallback = 0;
rc->wake_all_if_all_dead= 0;
}
#endif
for (cs = cf_subsection_find_next(config, NULL, "home_server");
cs != NULL;
cs = cf_subsection_find_next(config, cs, "home_server")) {
if (!home_server_add(rc, cs)) {
free(rc);
realms_free();
return 0;
}
}
for (cs = cf_subsection_find_next(config, NULL, "realm");
cs != NULL;
cs = cf_subsection_find_next(config, cs, "realm")) {
if (!realm_add(rc, cs)) {
free(rc);
realms_free();
return 0;
}
}
#ifdef WITH_COA
for (cs = cf_subsection_find_next(config, NULL, "home_server_pool");
cs != NULL;
cs = cf_subsection_find_next(config, cs, "home_server_pool")) {
int type;
if (cf_data_find(cs, "home_server_pool")) continue;
type = pool_peek_type(config, cs);
if (type == HOME_TYPE_INVALID) return 0;
if (!server_pool_add(rc, cs, type, TRUE)) {
return 0;
}
}
#endif
#ifdef WITH_PROXY
xlat_register("home_server", xlat_home_server, NULL);
xlat_register("home_server_pool", xlat_server_pool, NULL);
#endif
old_rc = realm_config;
realm_config = rc;
free(old_rc);
return 1;
}
REALM *realm_find2(const char *name)
{
REALM myrealm;
REALM *realm;
if (!name) name = "NULL";
myrealm.name = name;
realm = rbtree_finddata(realms_byname, &myrealm);
if (realm) return realm;
#ifdef HAVE_REGEX_H
if (realms_regex) {
realm_regex_t *this;
for (this = realms_regex; this != NULL; this = this->next) {
if (strcmp(this->realm->name, name) == 0) {
return this->realm;
}
}
}
#endif
myrealm.name = "DEFAULT";
return rbtree_finddata(realms_byname, &myrealm);
}
REALM *realm_find(const char *name)
{
REALM myrealm;
REALM *realm;
if (!name) name = "NULL";
myrealm.name = name;
realm = rbtree_finddata(realms_byname, &myrealm);
if (realm) return realm;
#ifdef HAVE_REGEX_H
if (realms_regex) {
realm_regex_t *this;
for (this = realms_regex; this != NULL; this = this->next) {
int compare;
regex_t reg;
if (regcomp(®, this->realm->name + 1,
REG_EXTENDED | REG_NOSUB | REG_ICASE) != 0) {
continue;
}
compare = regexec(®, name, 0, NULL, 0);
regfree(®);
if (compare == 0) return this->realm;
}
}
#endif
myrealm.name = "DEFAULT";
return rbtree_finddata(realms_byname, &myrealm);
}
#ifdef WITH_PROXY
home_server *home_server_ldb(const char *realmname,
home_pool_t *pool, REQUEST *request)
{
int start;
int count;
home_server *found = NULL;
home_server *zombie = NULL;
VALUE_PAIR *vp;
switch (pool->type) {
uint32_t hash;
case HOME_POOL_CLIENT_BALANCE:
switch (request->packet->src_ipaddr.af) {
case AF_INET:
hash = fr_hash(&request->packet->src_ipaddr.ipaddr.ip4addr,
sizeof(request->packet->src_ipaddr.ipaddr.ip4addr));
break;
case AF_INET6:
hash = fr_hash(&request->packet->src_ipaddr.ipaddr.ip6addr,
sizeof(request->packet->src_ipaddr.ipaddr.ip6addr));
break;
default:
hash = 0;
break;
}
start = hash % pool->num_home_servers;
break;
case HOME_POOL_CLIENT_PORT_BALANCE:
switch (request->packet->src_ipaddr.af) {
case AF_INET:
hash = fr_hash(&request->packet->src_ipaddr.ipaddr.ip4addr,
sizeof(request->packet->src_ipaddr.ipaddr.ip4addr));
break;
case AF_INET6:
hash = fr_hash(&request->packet->src_ipaddr.ipaddr.ip6addr,
sizeof(request->packet->src_ipaddr.ipaddr.ip6addr));
break;
default:
hash = 0;
break;
}
fr_hash_update(&request->packet->src_port,
sizeof(request->packet->src_port), hash);
start = hash % pool->num_home_servers;
break;
case HOME_POOL_KEYED_BALANCE:
if ((vp = pairfind(request->config_items, PW_LOAD_BALANCE_KEY)) != NULL) {
hash = fr_hash(vp->vp_strvalue, vp->length);
start = hash % pool->num_home_servers;
break;
}
case HOME_POOL_LOAD_BALANCE:
case HOME_POOL_FAIL_OVER:
start = 0;
break;
default:
start = 0;
break;
}
for (count = 0; count < pool->num_home_servers; count++) {
home_server *home = pool->servers[(start + count) % pool->num_home_servers];
if (!home) continue;
if (home->state == HOME_STATE_IS_DEAD) {
continue;
}
if (home->currently_outstanding >= home->max_outstanding) {
continue;
}
#ifdef WITH_DETAIL
if ((request->listener->type == RAD_LISTEN_DETAIL) &&
(request->packet->code == PW_ACCOUNTING_REQUEST) &&
(fr_ipaddr_cmp(&home->ipaddr, &request->packet->src_ipaddr) == 0)) {
continue;
}
#endif
if (home->state == HOME_STATE_ZOMBIE) {
if (!zombie) zombie = home;
continue;
}
if (pool->type != HOME_POOL_LOAD_BALANCE) {
found = home;
break;
}
if (!found) {
found = home;
continue;
}
RDEBUG3("PROXY %s %d\t%s %d",
found->name, found->currently_outstanding,
home->name, home->currently_outstanding);
if (home->currently_outstanding < found->currently_outstanding) {
RDEBUG3("PROXY Choosing %s: It's less busy than %s",
home->name, found->name);
found = home;
continue;
}
if (home->currently_outstanding > found->currently_outstanding) {
RDEBUG3("PROXY Skipping %s: It's busier than %s",
home->name, found->name);
continue;
}
if (((count + 1) * (fr_rand() & 0xffff)) < (uint32_t) 0x10000) {
found = home;
}
}
if (!found && zombie) {
found = zombie;
zombie = NULL;
}
if (!found && pool->fallback) {
found = pool->fallback;
}
if (found) {
update_and_return:
if (!request->proxy) {
if ((request->proxy = rad_alloc(TRUE)) == NULL) {
radlog(L_ERR|L_CONS, "no memory");
exit(1);
}
request->proxy->vps = paircopy(request->packet->vps);
}
request->proxy->src_ipaddr = found->src_ipaddr;
request->proxy->dst_ipaddr = found->ipaddr;
request->proxy->dst_port = found->port;
request->home_server = found;
if (found->message_authenticator &&
(request->packet->code == PW_AUTHENTICATION_REQUEST) &&
!pairfind(request->proxy->vps, PW_MESSAGE_AUTHENTICATOR)) {
radius_pairmake(request, &request->proxy->vps,
"Message-Authenticator", "0x00",
T_OP_SET);
}
return found;
}
if (!realm_config->fallback &&
realm_config->wake_all_if_all_dead) {
for (count = 0; count < pool->num_home_servers; count++) {
home_server *home = pool->servers[count];
if (!home) continue;
if ((home->state == HOME_STATE_IS_DEAD) &&
(home->ping_check == HOME_PING_CHECK_NONE)) {
home->state = HOME_STATE_ALIVE;
if (!found) found = home;
}
}
if (found) goto update_and_return;
}
if (realm_config->fallback &&
realmname &&
(strcmp(realmname, "NULL") != 0) &&
(strcmp(realmname, "DEFAULT") != 0)) {
REALM *rd = realm_find("DEFAULT");
if (!rd) return NULL;
pool = NULL;
if (request->packet->code == PW_AUTHENTICATION_REQUEST) {
pool = rd->auth_pool;
} else if (request->packet->code == PW_ACCOUNTING_REQUEST) {
pool = rd->acct_pool;
}
if (!pool) return NULL;
RDEBUG2("PROXY - realm %s has no live home servers. Falling back to the DEFAULT realm.", realmname);
return home_server_ldb(rd->name, pool, request);
}
return NULL;
}
home_server *home_server_find(fr_ipaddr_t *ipaddr, int port)
{
home_server myhome;
memset(&myhome, 0, sizeof(myhome));
myhome.ipaddr = *ipaddr;
myhome.port = port;
myhome.server = NULL;
return rbtree_finddata(home_servers_byaddr, &myhome);
}
#ifdef WITH_COA
home_server *home_server_byname(const char *name, int type)
{
home_server myhome;
memset(&myhome, 0, sizeof(myhome));
myhome.type = type;
myhome.name = name;
return rbtree_finddata(home_servers_byname, &myhome);
}
#endif
#ifdef WITH_STATS
home_server *home_server_bynumber(int number)
{
home_server myhome;
memset(&myhome, 0, sizeof(myhome));
myhome.number = number;
myhome.server = NULL;
return rbtree_finddata(home_servers_bynumber, &myhome);
}
#endif
home_pool_t *home_pool_byname(const char *name, int type)
{
home_pool_t mypool;
memset(&mypool, 0, sizeof(mypool));
mypool.name = name;
mypool.server_type = type;
return rbtree_finddata(home_pools_byname, &mypool);
}
#endif
#ifdef WITH_PROXY
static int home_server_create_callback(UNUSED void *ctx, void *data)
{
home_server *home = data;
rad_listen_t *this;
if (home->src_ipaddr.af != AF_UNSPEC) {
this = proxy_new_listener(&home->src_ipaddr, TRUE);
if (!this) return 1;
}
return 0;
}
int home_server_create_listeners(void)
{
if (!home_servers_byaddr) return 0;
if (rbtree_walk(home_servers_byaddr, InOrder,
home_server_create_callback, NULL) != 0) {
return -1;
}
return 0;
}
#endif