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chilli.c
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chilli.c
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/* -*- mode: c; c-basic-offset: 2 -*- */
/*
* Copyright (C) 2007-2013 David Bird (Coova Technologies) <support@coova.com>
* Copyright (C) 2003-2005 Mondru AB.,
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
#include "chilli.h"
#include "bstrlib.h"
#ifdef ENABLE_MODULES
#include "chilli_module.h"
#endif
struct tun_t *tun; /* TUN instance */
struct ippool_t *ippool; /* Pool of IP addresses */
struct radius_t *radius; /* Radius client instance */
struct dhcp_t *dhcp = NULL; /* DHCP instance */
struct redir_t *redir = NULL; /* Redir instance */
#ifdef ENABLE_MULTIROUTE
#include "rtmon.h"
struct rtmon_t _rtmon;
#endif
static int connections=0;
struct app_conn_t *firstfreeconn=0; /* First free in linked list */
struct app_conn_t *lastfreeconn=0; /* Last free in linked list */
struct app_conn_t *firstusedconn=0; /* First used in linked list */
struct app_conn_t *lastusedconn=0; /* Last used in linked list */
struct app_conn_t admin_session;
struct timespec mainclock;
time_t checktime;
time_t rereadtime;
static int *p_keep_going = 0;
static int *p_reload_config = 0;
/*static int do_timeouts = 1;*/
static int do_interval = 0;
#ifdef ENABLE_UAMANYIP
/* some IPv4LL/APIPA(rfc 3927) specific stuff for uamanyip */
struct in_addr ipv4ll_ip;
struct in_addr ipv4ll_mask;
#endif
#ifdef ENABLE_SSDP
#define SSDP_MCAST_ADDR ("239.255.255.250")
#define SSDP_PORT 1900
struct in_addr ssdp;
#endif
static int acct_req(acct_type type,
struct app_conn_t *conn,
uint8_t status_type);
static pid_t chilli_pid = 0;
#ifdef ENABLE_CHILLIPROXY
static pid_t proxy_pid = 0;
#endif
#ifdef ENABLE_CHILLIRADSEC
static pid_t radsec_pid = 0;
#endif
#ifdef ENABLE_CHILLIREDIR
static pid_t redir_pid = 0;
#endif
typedef struct child {
pid_t pid;
uint8_t type;
time_t started;
char *name;
struct child *next;
} CHILD;
static unsigned long child_count_tot = 0;
static int child_count = 0;
CHILD * children = 0;
CHILD *child_create(uint8_t type, pid_t pid, char *name) {
CHILD *node;
if (!(node=malloc(sizeof(CHILD)))) return 0;
node->started = mainclock_now();
node->type = type;
node->pid = pid;
node->name = name;
node->next = 0;
return node;
}
CHILD *child_insert_head(CHILD *list, uint8_t type, pid_t pid, char *name) {
CHILD *newnode = child_create(type, pid, name);
if (!newnode) return 0;
newnode->next = list;
return newnode;
}
int child_add_pid(uint8_t type, pid_t pid, char *name) {
if (!children) {
/* Create the list head, the main process */
children = child_create(CHILLI_PROC, getpid(), "[chilli]");
if (!children) return -1;
}
children->next = child_insert_head(children->next, type, pid, name);
if (!children->next) return -1;
return 0;
}
int child_remove_pid(pid_t pid) {
/* Will never be the head "children"-
which is the main process pid */
CHILD *list, *node;
if (children) {
list = children;
while (list->next && list->next->pid != pid)
list = list->next;
if (list->next) {
node = list->next;
list->next = node->next;
#if(_debug_)
if (_options.debug)
syslog(LOG_DEBUG, "%s(%d): Freed child process %d [%s]", __FUNCTION__, __LINE__, node->pid, node->name);
#endif
free(node);
return 0;
}
}
return -1;
}
#if defined(ENABLE_CHILLIREDIR) || defined(ENABLE_CHILLIPROXY) || defined(ENABLE_CHILLIRADSEC)
static pid_t launch_daemon(char *name, char *path) {
pid_t cpid = getpid();
pid_t p = chilli_fork(CHILLI_PROC_DAEMON, name);
if (p < 0) {
syslog(LOG_ERR, "%s: fork failed", strerror(errno));
} else if (p == 0) {
char *newargs[16];
char file[128];
int i=0;
chilli_binconfig(file, sizeof(file), cpid);
newargs[i++] = name;
newargs[i++] = "-b";
newargs[i++] = file;
newargs[i++] = NULL;
if (execv(path, newargs) != 0) {
syslog(LOG_ERR, "%s: execl() did not return 0!", strerror(errno));
exit(0);
}
} else {
return p;
}
return 0;
}
#endif
#ifdef ENABLE_CHILLIPROXY
static void launch_chilliproxy(void) {
proxy_pid = launch_daemon("[chilli_proxy]", SBINDIR "/chilli_proxy");
}
#endif
#ifdef ENABLE_CHILLIREDIR
static void launch_chilliredir(void) {
redir_pid = launch_daemon("[chilli_redir]", SBINDIR "/chilli_redir");
}
#endif
#ifdef ENABLE_CHILLIRADSEC
static void launch_chilliradsec(void) {
radsec_pid = launch_daemon("[chilli_radsec]", SBINDIR "/chilli_radsec");
}
#endif
static int proc_status(char *name, pid_t pid) {
char buffer[128];
char * line = 0;
size_t len = 0;
int ret = 0;
ssize_t read;
FILE* fp;
snprintf(buffer, sizeof(buffer), "/proc/%i/status", pid);
fp = fopen(buffer, "r");
if (!fp) return -1;
while ((read = getline(&line, &len, fp)) != -1) {
if (!memcmp(line, name, strlen(name))) {
int i;
if (sscanf(line+strlen(name)+1, "%d %s", &i, buffer) == 2) {
ret = i;
if (buffer[0] == 'm') ret *= 1000;
else if (buffer[0] == 'g') ret *= 1000000;
}
}
}
if (line)
free(line);
fclose(fp);
return ret;
}
static int proc_countfds(pid_t pid) {
char buffer[128];
int ret = 0;
DIR *dir;
struct dirent * d = 0;
snprintf(buffer, sizeof(buffer), "/proc/%i/fd", pid);
dir = opendir(buffer);
if (!dir) return -1;
while ((d = readdir(dir)))
if (d->d_name[0] != '.')
ret++;
closedir(dir);
return ret;
}
void child_print(bstring s) {
time_t now = mainclock_now();
CHILD *node = children;
char line[256];
snprintf(line, sizeof(line), "Children %d Max %d Total %ld\n",
child_count, _options.childmax, child_count_tot);
bcatcstr(s, line);
while (node) {
char *n = "";
switch (node->type) {
case CHILLI_PROC: n = "Main"; break;
case CHILLI_PROC_DAEMON: n = "Daemon"; break;
case CHILLI_PROC_REDIR: n = "Redirect"; break;
case CHILLI_PROC_SCRIPT: n = "Script"; break;
}
snprintf(line, sizeof(line)-1,
"PID %8d %-8s %-20s up %d [Vm Size: %d RSS: %d FDs: %d]\n",
node->pid, n, node->name,
(int)(now - node->started),
proc_status("VmSize:", node->pid),
proc_status("VmRSS:", node->pid),
proc_countfds(node->pid));
bcatcstr(s, line);
node = node->next;
}
}
void child_killall(int sig) {
CHILD *node = children;
while (node) {
kill(node->pid, sig);
if (_options.debug)
syslog(LOG_DEBUG, "%s(%d): pid %d killed %d", __FUNCTION__, __LINE__, getpid(), node->pid);
node = node->next;
}
}
pid_t chilli_fork(uint8_t type, char *name) {
pid_t pid;
if (child_count == _options.childmax) {
return -1;
}
pid = fork();
if (pid > 0) {
if (child_add_pid(type, pid, name) == 0) {
++child_count;
++child_count_tot;
}
}
return pid;
}
static void _sigchld(int signum) {
pid_t pid;
int stat;
while ((pid = waitpid(-1, &stat, WNOHANG)) > 0) {
#if(_debug_)
if (_options.debug)
syslog(LOG_DEBUG, "%s(%d): child %d terminated", __FUNCTION__, __LINE__, pid);
#endif
#ifdef ENABLE_CHILLIRADSEC
if (radsec_pid > 0 && radsec_pid == pid) {
syslog(LOG_ERR, "Having to re-launch chilli_radsec... PID %d exited", pid);
launch_chilliradsec();
}
#endif
#ifdef ENABLE_CHILLIPROXY
if (proxy_pid > 0 && proxy_pid == pid) {
syslog(LOG_ERR, "Having to re-launch chilli_proxy... PID %d exited", pid);
launch_chilliproxy();
}
#endif
#ifdef ENABLE_CHILLIREDIR
if (redir_pid > 0 && redir_pid == pid) {
syslog(LOG_ERR, "Having to re-launch chilli_redir... PID %d exited", pid);
launch_chilliredir();
}
#endif
if (child_remove_pid(pid) == 0)
child_count--;
}
}
static void _sigterm(int signum) {
syslog(LOG_DEBUG, "%s(%d): SIGTERM: shutdown", __FUNCTION__, __LINE__);
if (p_keep_going)
*p_keep_going = 0;
}
static void _sigvoid(int signum) {
#if(_debug_)
syslog(LOG_DEBUG, "%s(%d): received %d signal", __FUNCTION__, __LINE__, signum);
#endif
}
static void _sigusr1(int signum) {
syslog(LOG_DEBUG, "%s(%d): SIGUSR1: reloading configuration", __FUNCTION__, __LINE__);
if (p_reload_config)
*p_reload_config = 1;
#ifdef ENABLE_CHILLIREDIR
if (redir_pid)
kill(redir_pid, SIGUSR1);
#endif
#ifdef ENABLE_CHILLIPROXY
if (proxy_pid)
kill(proxy_pid, SIGUSR1);
#endif
#ifdef ENABLE_CHILLIRADSEC
if (radsec_pid)
kill(radsec_pid, SIGUSR1);
#endif
}
static void _sighup(int signum) {
syslog(LOG_DEBUG, "%s(%d): SIGHUP: rereading configuration", __FUNCTION__, __LINE__);
do_interval = 1;
}
int chilli_handle_signal(void *ctx, int fd) {
int signo = selfpipe_read();
#if(_debug_)
if (_options.debug)
syslog(LOG_DEBUG, "%s(%d): caught %d via selfpipe", __FUNCTION__, __LINE__, signo);
#endif
switch (signo) {
case SIGCHLD: _sigchld(signo); break;
case SIGPIPE: _sigvoid(signo); break;
case SIGHUP: _sighup(signo); break;
case SIGUSR1: _sigusr1(signo); break;
case SIGTERM:
case SIGINT: _sigterm(signo); break;
default: return signo;
}
return 0;
}
void chilli_signals(int *with_term, int *with_hup) {
selfpipe_trap(SIGCHLD);
selfpipe_trap(SIGPIPE);
if (with_hup) {
p_reload_config = with_hup;
selfpipe_trap(SIGHUP);
selfpipe_trap(SIGUSR1);
}
if (with_term) {
p_keep_going = with_term;
selfpipe_trap(SIGTERM);
selfpipe_trap(SIGINT);
}
}
int chilli_binconfig(char *file, size_t flen, pid_t pid) {
if (pid == 0) {
char * bc = _options.binconfig;
if (bc) {
snprintf(file, flen, "%s", bc);
return 0;
} else {
pid = chilli_pid;
if (pid == 0)
pid = getpid();
}
}
snprintf(file, flen, DEFSTATEDIR "/chilli.%d.cfg.bin", pid);
return 0;
}
int chilli_appconn_run(int (*cb)(struct app_conn_t *, void *), void *d) {
struct app_conn_t *appconn = firstusedconn;
while (appconn) {
if (cb(appconn, d))
return 1;
appconn = appconn->next;
}
return 0;
}
#ifdef HAVE_LIBRT
static struct timespec startup_real;
static struct timespec startup_mono;
#endif
static time_t start_tick = 0;
time_t mainclock_towall(time_t t) {
#ifdef HAVE_LIBRT
if (startup_real.tv_sec)
return startup_real.tv_sec + (t - start_tick);
#endif
return mainclock.tv_sec;
}
time_t mainclock_wall(void) {
return mainclock_towall(mainclock.tv_sec);
}
time_t mainclock_tick(void) {
#ifdef HAVE_LIBRT
struct timespec ts;
#if defined(CLOCK_MONOTONIC)
clockid_t cid = CLOCK_MONOTONIC;
#else
clockid_t cid = CLOCK_REALTIME;
#endif
int res = clock_gettime(cid, &ts);
if (res == -1 && errno == EINVAL) {
cid = CLOCK_REALTIME;
res = clock_gettime(cid, &ts);
}
if (res == -1) {
syslog(LOG_ERR, "%s: clock_gettime()", strerror(errno));
/* drop through to old time() */
} else {
mainclock.tv_sec = ts.tv_sec;
mainclock.tv_nsec = ts.tv_nsec;
return mainclock.tv_sec;
}
#endif
if (time(&mainclock.tv_sec) == (time_t)-1) {
syslog(LOG_ERR, "%s: time()", strerror(errno));
}
return mainclock.tv_sec;
}
time_t mainclock_now(void) {
return mainclock.tv_sec;
}
time_t mainclock_rt(void) {
time_t rt = 0;
#ifdef HAVE_LIBRT
struct timespec ts;
clockid_t cid = CLOCK_REALTIME;
if (clock_gettime(cid, &ts) < 0) {
syslog(LOG_ERR, "%s: clock_gettime()", strerror(errno));
/* drop through to old time() */
} else {
rt = ts.tv_sec;
return rt;
}
#endif
if (time(&rt) == (time_t)-1) {
syslog(LOG_ERR, "%s: time()", strerror(errno));
}
return rt;
}
int mainclock_rtdiff(time_t past) {
time_t rt = mainclock_rt();
return (int) difftime(rt, past);
}
int mainclock_diff(time_t past) {
return (int) (mainclock.tv_sec - past);
}
uint32_t mainclock_diffu(time_t past) {
int i = mainclock_diff(past);
if (i > 0) return (uint32_t) i;
return 0;
}
void mainclock_tsdiff(struct timespec *out,
struct timespec *start,
struct timespec *end) {
if ((end->tv_nsec - start->tv_nsec) < 0) {
out->tv_sec = end->tv_sec - start->tv_sec-1;
out->tv_nsec = 1000000000 + end->tv_nsec - start->tv_nsec;
} else {
out->tv_sec = end->tv_sec - start->tv_sec;
out->tv_nsec = end->tv_nsec - start->tv_nsec;
}
}
double mainclock_diffd(struct timespec * past) {
double d = 0;
struct timespec tsd;
mainclock_tsdiff(&tsd, past, &mainclock);
d = tsd.tv_nsec;
d /= 1000000000.0;
d += tsd.tv_sec;
return d;
}
uint8_t* chilli_called_station(struct session_state *state) {
#ifdef ENABLE_LOCATION
if (_options.location_copy_called && state->redir.calledlen) {
return state->redir.called;
}
#endif
return dhcp_nexthop(dhcp);
}
static void set_sessionid(struct app_conn_t *appconn, char full) {
appconn->rt = (int) mainclock_rt();
snprintf(appconn->s_state.sessionid,
sizeof(appconn->s_state.sessionid),
"%.8lld%.8x", (long long int)appconn->rt, appconn->unit);
appconn->s_state.redir.classlen = 0;
appconn->s_state.redir.statelen = 0;
#ifdef ENABLE_SESSIONID
if (full) {
uint8_t * his = appconn->hismac;
uint8_t * called = dhcp_nexthop(dhcp);
snprintf(appconn->s_state.chilli_sessionid,
sizeof(appconn->s_state.chilli_sessionid),
"SES-"
"%.2X%.2X%.2X%.2X%.2X%.2X-"
"%.2X%.2X%.2X%.2X%.2X%.2X-"
"%.8lx%.8x",
MAC_ARG(his), MAC_ARG(called),
appconn->rt, appconn->unit);
}
#endif
}
/* Used to write process ID to file. Assume someone else will delete */
static void log_pid(char *pidfile) {
FILE *file;
mode_t oldmask;
oldmask = umask(022);
file = fopen(pidfile, "w");
umask(oldmask);
if(!file) return;
fprintf(file, "%d\n", getpid());
fclose(file);
}
#ifdef ENABLE_LEAKYBUCKET
static inline void leaky_bucket_init(struct app_conn_t *conn) {
if (_options.bwbucketupsize) {
conn->s_state.bucketupsize = _options.bwbucketupsize;
} else {
#ifdef BUCKET_SIZE
conn->s_state.bucketupsize = BUCKET_SIZE;
#else
conn->s_state.bucketupsize =
conn->s_params.bandwidthmaxup / 8 * BUCKET_TIME;
if (conn->s_state.bucketupsize < BUCKET_SIZE_MIN)
conn->s_state.bucketupsize = BUCKET_SIZE_MIN;
#endif
}
if (_options.bwbucketdnsize) {
conn->s_state.bucketdownsize = _options.bwbucketdnsize;
} else {
#ifdef BUCKET_SIZE
conn->s_state.bucketdownsize = BUCKET_SIZE;
#else
conn->s_state.bucketdownsize =
conn->s_params.bandwidthmaxdown / 8 * BUCKET_TIME;
if (conn->s_state.bucketdownsize < BUCKET_SIZE_MIN)
conn->s_state.bucketdownsize = BUCKET_SIZE_MIN;
#endif
}
if (_options.bwbucketminsize > 0) {
if (conn->s_state.bucketupsize < _options.bwbucketminsize)
conn->s_state.bucketupsize = _options.bwbucketminsize;
if (conn->s_state.bucketdownsize < _options.bwbucketminsize)
conn->s_state.bucketdownsize = _options.bwbucketminsize;
}
}
/* Perform leaky bucket on up- and downlink traffic */
static inline int
leaky_bucket(struct app_conn_t *conn,
uint64_t octetsup, uint64_t octetsdown) {
int result = 0;
uint64_t upbytes=0, dnbytes=0;
long double timediff;
timediff = mainclock_diffd(&conn->s_state.last_bw_time);
if (conn->s_params.bandwidthmaxup) {
upbytes = (uint64_t) ((timediff * conn->s_params.bandwidthmaxup) / 8);
if (!conn->s_state.bucketupsize) {
leaky_bucket_init(conn);
}
if (conn->s_state.bucketup > upbytes) {
conn->s_state.bucketup -= upbytes;
}
else {
conn->s_state.bucketup = 0;
}
if ((conn->s_state.bucketup + octetsup) >
conn->s_state.bucketupsize) {
if (_options.debug)
syslog(LOG_DEBUG, "%s(%d): Leaky bucket dropping upload overflow from "MAC_FMT, __FUNCTION__, __LINE__,
MAC_ARG(conn->hismac));
result = -1;
}
else {
conn->s_state.bucketup += octetsup;
}
}
if (conn->s_params.bandwidthmaxdown) {
dnbytes = (uint64_t) ((timediff * conn->s_params.bandwidthmaxdown) / 8);
if (!conn->s_state.bucketdownsize) {
leaky_bucket_init(conn);
}
if (conn->s_state.bucketdown > dnbytes) {
conn->s_state.bucketdown -= dnbytes;
}
else {
conn->s_state.bucketdown = 0;
}
if ((conn->s_state.bucketdown + octetsdown) >
conn->s_state.bucketdownsize) {
if (_options.debug)
syslog(LOG_DEBUG, "%s(%d): Leaky bucket dropping download overflow to "MAC_FMT, __FUNCTION__, __LINE__,
MAC_ARG(conn->hismac));
result = -1;
}
else {
conn->s_state.bucketdown += octetsdown;
}
}
#if(0)
if (_options.debug &&
(conn->s_params.bandwidthmaxup || conn->s_params.bandwidthmaxdown))
if (_options.debug)
syslog(LOG_DEBUG, "%s(%d): Leaky bucket: bucketup: %lld/%lld, " __FUNCTION__, __LINE__,
"bucketdown: %lld/%lld, up: %lld/(%lld), down: %lld/(%lld)",
conn->s_state.bucketup, conn->s_state.bucketupsize,
conn->s_state.bucketdown, conn->s_state.bucketdownsize,
octetsup, upbytes, octetsdown, dnbytes);
#endif
conn->s_state.last_bw_time.tv_sec = mainclock.tv_sec;
conn->s_state.last_bw_time.tv_nsec = mainclock.tv_nsec;
return result;
}
#endif
void set_env(char *name, char type, void *value, int len) {
char *v=0;
char s[1024];
memset(s,0,sizeof(s));
switch(type) {
case VAL_IN_ADDR:
strlcpy(s, inet_ntoa(*(struct in_addr *)value), sizeof(s));
v = s;
break;
case VAL_MAC_ADDR:
{
uint8_t * mac = (uint8_t*)value;
snprintf(s, sizeof(s), MAC_FMT, MAC_ARG(mac));
v = s;
}
break;
case VAL_ULONG:
snprintf(s, sizeof(s), "%ld", (long int)*(uint32_t *)value);
v = s;
break;
case VAL_ULONG64:
snprintf(s, sizeof(s), "%ld", (long int)*(uint64_t *)value);
v = s;
break;
case VAL_USHORT:
snprintf(s, sizeof(s), "%d", (int)(*(uint16_t *)value));
v = s;
break;
case VAL_STRING:
if (len > 0) {
if (len > sizeof(s) - 1)
len = sizeof(s) - 1;
memcpy(s, (char*)value, len);
s[len]=0;
v = s;
} else {
v = (char*)value;
}
break;
}
if (name != NULL && v != NULL) {
if (setenv(name, v, 1) != 0) {
syslog(LOG_ERR, "%s: setenv(%s, %s, 1) did not return 0!", strerror(errno), name, v);
}
}
}
int runscript(struct app_conn_t *appconn, char* script,
char *loc, char *oloc) {
int status;
uint32_t sessiontime;
if ((status = chilli_fork(CHILLI_PROC_SCRIPT, script)) < 0) {
syslog(LOG_ERR, "%s: forking %s", strerror(errno), script);
return 0;
}
if (status > 0) { /* Parent */
return 0;
}
#ifdef ENABLE_LAYER3
if (_options.layer3)
set_env("LAYER3", VAL_STRING, "1", 0);
#endif
set_env("DEV", VAL_STRING, tun(tun, 0).devname, 0);
set_env("NET", VAL_IN_ADDR, &appconn->net, 0);
set_env("MASK", VAL_IN_ADDR, &appconn->mask, 0);
set_env("ADDR", VAL_IN_ADDR, &appconn->ourip, 0);
set_env("USER_NAME", VAL_STRING, appconn->s_state.redir.username, 0);
set_env("NAS_IP_ADDRESS", VAL_IN_ADDR,&_options.radiuslisten, 0);
set_env("SERVICE_TYPE", VAL_STRING, "1", 0);
set_env("FRAMED_IP_ADDRESS", VAL_IN_ADDR, &appconn->hisip, 0);
set_env("FILTER_ID", VAL_STRING, appconn->s_params.filteridbuf, 0);
set_env("STATE", VAL_STRING, appconn->s_state.redir.statebuf, appconn->s_state.redir.statelen);
set_env("CLASS", VAL_STRING, appconn->s_state.redir.classbuf, appconn->s_state.redir.classlen);
set_env("CUI", VAL_STRING, appconn->s_state.redir.cuibuf, appconn->s_state.redir.cuilen);
set_env("SESSION_TIMEOUT", VAL_ULONG64, &appconn->s_params.sessiontimeout, 0);
set_env("IDLE_TIMEOUT", VAL_ULONG, &appconn->s_params.idletimeout, 0);
set_env("CALLING_STATION_ID", VAL_MAC_ADDR, appconn->hismac, 0);
set_env("CALLED_STATION_ID", VAL_MAC_ADDR, chilli_called_station(&appconn->s_state), 0);
set_env("NAS_ID", VAL_STRING, _options.radiusnasid, 0);
set_env("NAS_PORT_TYPE", VAL_STRING, "19", 0);
set_env("ACCT_SESSION_ID", VAL_STRING, appconn->s_state.sessionid, 0);
set_env("ACCT_INTERIM_INTERVAL", VAL_USHORT, &appconn->s_params.interim_interval, 0);
set_env("WISPR_LOCATION_ID", VAL_STRING, _options.radiuslocationid, 0);
set_env("WISPR_LOCATION_NAME", VAL_STRING, _options.radiuslocationname, 0);
set_env("WISPR_BANDWIDTH_MAX_UP", VAL_ULONG, &appconn->s_params.bandwidthmaxup, 0);
set_env("WISPR_BANDWIDTH_MAX_DOWN", VAL_ULONG, &appconn->s_params.bandwidthmaxdown, 0);
/*set_env("WISPR-SESSION_TERMINATE_TIME", VAL_USHORT, &appconn->sessionterminatetime, 0);*/
set_env("COOVACHILLI_MAX_INPUT_OCTETS", VAL_ULONG64, &appconn->s_params.maxinputoctets, 0);
set_env("COOVACHILLI_MAX_OUTPUT_OCTETS", VAL_ULONG64, &appconn->s_params.maxoutputoctets, 0);
set_env("COOVACHILLI_MAX_TOTAL_OCTETS", VAL_ULONG64, &appconn->s_params.maxtotaloctets, 0);
set_env("INPUT_OCTETS", VAL_ULONG64, &appconn->s_state.input_octets, 0);
set_env("OUTPUT_OCTETS", VAL_ULONG64, &appconn->s_state.output_octets, 0);
set_env("INPUT_PACKETS", VAL_ULONG64, &appconn->s_state.input_packets, 0);
set_env("OUTPUT_PACKETS", VAL_ULONG64, &appconn->s_state.output_packets, 0);
sessiontime = mainclock_diffu(appconn->s_state.start_time);
set_env("SESSION_TIME", VAL_ULONG, &sessiontime, 0);
sessiontime = mainclock_diffu(appconn->s_state.last_up_time);
set_env("IDLE_TIME", VAL_ULONG, &sessiontime, 0);
if (loc) {
set_env("LOCATION", VAL_STRING, loc, 0);
}
if (oloc) {
set_env("OLD_LOCATION", VAL_STRING, oloc, 0);
}
if (appconn->s_state.terminate_cause)
set_env("TERMINATE_CAUSE", VAL_ULONG,
&appconn->s_state.terminate_cause, 0);
if (execl(
#ifdef ENABLE_CHILLISCRIPT
SBINDIR "/chilli_script", SBINDIR "/chilli_script", _options.binconfig,
#else
script,
#endif
script, (char *) 0) != 0) {
syslog(LOG_ERR, "%s: exec %s failed", strerror(errno), script);
}
exit(0);
}
/***********************************************************
*
* Functions handling uplink protocol authentication.
* Called in response to radius access request response.
*
***********************************************************/
static int newip(struct ippoolm_t **ipm, struct in_addr *hisip, uint8_t *hismac) {
#ifdef ENABLE_UAMANYIP
struct in_addr tmpip;
if (_options.autostatip && hismac) {
if (!hisip) hisip = &tmpip;
hisip->s_addr = htonl((_options.autostatip % 255) * 0x1000000 +
hismac[3] * 0x10000 +
hismac[4] * 0x100 +
hismac[5]);
}
#endif
if (_options.debug)
syslog(LOG_DEBUG, "%s(%d): newip %s", __FUNCTION__, __LINE__, inet_ntoa(*hisip));
if (ippool_newip(ippool, ipm, hisip, 1)) {
if (ippool_newip(ippool, ipm, hisip, 0)) {
syslog(LOG_ERR, "Failed to allocate either static or dynamic IP address");
return -1;
}
}
return 0;
}
/*
* A few functions to manage connections
*/
static int initconn(void) {
checktime = rereadtime = mainclock.tv_sec;
return 0;
}
int chilli_new_conn(struct app_conn_t **conn) {
int n;
if (!firstfreeconn) {
if (connections == _options.max_clients) {
syslog(LOG_ERR, "reached max connections %d!", _options.max_clients);
return -1;
}
n = ++connections;
if (!(*conn = calloc(1, sizeof(struct app_conn_t)))) {
syslog(LOG_ERR, "Out of memory!");
connections--;
return -1;
}
} else {
*conn = firstfreeconn;
n = (*conn)->unit;
/* Remove from link of free */
if (firstfreeconn->next) {
firstfreeconn->next->prev = NULL;
firstfreeconn = firstfreeconn->next;
}
else { /* Took the last one */
firstfreeconn = NULL;
lastfreeconn = NULL;
}
/* Initialise structures */
memset(*conn, 0, sizeof(struct app_conn_t));
}
/* Initalise connection with default options */
session_param_defaults(&(*conn)->s_params);
/* Insert into link of used */
if (firstusedconn) {
firstusedconn->prev = *conn;
(*conn)->next = firstusedconn;
}
else { /* First insert */
lastusedconn = *conn;
}
firstusedconn = *conn;
(*conn)->inuse = 1;
(*conn)->unit = n;
return 0; /* Success */
}
int static freeconn(struct app_conn_t *conn) {
int n = conn->unit;
#ifdef ENABLE_GARDENACCOUNTING
if (_options.uamgardendata) {
acct_req(ACCT_GARDEN, conn, RADIUS_STATUS_TYPE_STOP);
}
#endif
#ifdef WITH_PATRICIA
if (conn->ptree)
patricia_destroy (conn->ptree, free);
#endif
#if defined(ENABLE_LOCATION) && defined(HAVE_AVL)
/*remove from location list (if we have a location/are in list) !!??*/
if (conn->loc_search_node!=NULL) location_close_conn(conn,1);
#endif
/* Remove from link of used */
if ((conn->next) && (conn->prev)) {
conn->next->prev = conn->prev;
conn->prev->next = conn->next;
}
else if (conn->next) { /* && prev == 0 */
conn->next->prev = NULL;
firstusedconn = conn->next;
}
else if (conn->prev) { /* && next == 0 */
conn->prev->next = NULL;
lastusedconn = conn->prev;
}
else { /* if ((next == 0) && (prev == 0)) */
firstusedconn = NULL;
lastusedconn = NULL;
}
/* Initialise structures */
memset(conn, 0, sizeof(struct app_conn_t));
conn->unit = n;
/* Insert into link of free */
if (firstfreeconn) {
firstfreeconn->prev = conn;
}
else { /* First insert */