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actube/src/ac/conf.c

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/*
This file is part of actube.
libcapwap 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 3 of the License, or
(at your option) any later version.
libcapwap 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 Foobar. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdlib.h>
#include <string.h>
#include <sys/utsname.h>
#include <confuse.h>
#include "cw/capwap.h"
#include "cw/sock.h"
#include "cw/log.h"
#include "cw/dbg.h"
#include "cw/cw_util.h"
#include "cw/action.h"
#include "conf.h"
#include "ac.h"
uint8_t conf_macaddress[12];
uint8_t conf_macaddress_len = 0;
long conf_strict_capwap = 1;
long conf_strict_headers = 0;
//char *conf_capwap_mode_str = NULL;
int conf_capwap_mode = CW_MODE_CAPWAP;
const char *conf_acname = NULL;
int conf_acname_len = 0;
char *conf_acid = NULL;
char *conf_primary_if = NULL;
long conf_max_wtps = CONF_DEFAULT_MAXWTPS;
char *conf_logfilename = CONF_DEFAULT_LOGFILENAME;
struct sockaddr_storage *conf_salist = NULL;
char **conf_listen_addrs;
int conf_listen_addrs_len = 0;
char **conf_mcast_groups = 0;
int conf_mcast_groups_len = 0;
char **conf_bcast_addrs = 0;
int conf_bcast_addrs_len;
struct sockaddr_storage *conf_bsalist = NULL;
int conf_salist_len = 0;
int conf_bsalist_len = 0;
struct sockaddr *conf_ac_ips;
int conf_ac_ips_len;
char *conf_sslcertfilename = NULL;
char *conf_sslkeyfilename = NULL;
char *conf_sslkeypass = NULL;
char *conf_sslcipher = NULL;
char *conf_dtls_psk = NULL;
//char * conf_ac_hardware_version=NULL;
//char * conf_ac_software_version=NULL;
int conf_security = 0;
long conf_vendor_id = CONF_DEFAULT_VENDOR_ID;
bstr_t conf_hardware_version = NULL;
bstr_t conf_software_version = NULL;
bstr_t conf_cisco_hardware_version = NULL;
bstr_t conf_cisco_software_version = NULL;
//int conf_hardware_version_len=0;
//int conf_software_version_len=0;
int conf_use_loopback = 0;
long conf_debug_level = -1;
char *conf_db_file = 0;
int conf_ipv4 = 1;
#ifdef WITH_IPV6
int conf_ipv6 = 1;
#endif
#ifdef WITH_LWAPP
int conf_lwapp = 1;
char *conf_lw_control_port = 0;
#endif
char *conf_image_dir = 0;
char *conf_control_port = 0;
int conf_dtls_verify_peer = 1;
static int init_acname()
{
if (conf_acname == NULL) {
char *s = malloc(strlen(CONF_DEFAULT_ACNAME) + strlen(conf_acid) + 1);
sprintf(s, "%s%s", CONF_DEFAULT_ACNAME, conf_acid);
conf_acname = s;
}
conf_acname_len = strlen(conf_acname);
return 1;
}
#include "../mod/modload.h"
static int init_acid()
{
if (conf_acid != NULL)
return 1;
#ifdef WITH_IPV6
conf_primary_if = sock_get_primary_if(AF_INET6);
if (!conf_primary_if)
conf_primary_if = sock_get_primary_if(AF_INET);
#else
conf_primary_if = get_primary_if(AF_INET);
#endif
if (!conf_primary_if) {
cw_log(LOG_ERR,
"Fatal: Unable to detect primary interface, needed to set ac_id. Pleas use confiPleas u to set ac_id");
return 0;
}
if (!sock_getifhwaddr(conf_primary_if, conf_macaddress, &conf_macaddress_len)) {
cw_log(LOG_ERR, "Fatal: Unable to detect link layer address for %s\n",
conf_primary_if);
return 0;
};
int i;
conf_acid = malloc(2 * conf_macaddress_len + 1);
char *s = conf_acid;
for (i = 0; i < conf_macaddress_len; i++) {
s += sprintf(s, "%02X", conf_macaddress[i]);
}
return 1;
}
static int init_dtls()
{
if (conf_dtls_psk != NULL) {
// conf_security=CW_SECURITY_FLAGS_S;
}
return 1;
}
static int init_vendor_id()
{
return 1;
}
static int init_version()
{
/* Init hardware version */
if (!conf_hardware_version) {
struct utsname u;
int rc = uname(&u);
if (rc < 0)
conf_hardware_version =
(bstr_t) strdup(CONF_DEFAULT_HARDWARE_VERSION);
else {
char str[265];
sprintf(str, "%s / %s %s", u.machine, u.sysname, u.release);
conf_hardware_version = (bstr_t) strdup(str);
}
}
bstr_replace(&conf_hardware_version,
bstr_create_from_cfgstr((char *) conf_hardware_version));
/* software version */
if (!conf_software_version)
conf_software_version = (bstr_t) strdup(CONF_DEFAULT_SOFTWARE_VERSION);
bstr_replace(&conf_software_version,
bstr_create_from_cfgstr((char *) conf_software_version));
/* Cisco hardware version */
if (!conf_cisco_hardware_version)
conf_cisco_hardware_version =
(bstr_t) strdup(CONF_DEFAULT_CISCO_HARDWARE_VERSION);
bstr_replace(&conf_cisco_hardware_version,
bstr_create_from_cfgstr((char *) conf_cisco_hardware_version));
/* Cisco software version */
/*
if (!conf_cisco_software_version)
conf_cisco_software_version=(bstr_t)strdup(CONF_DEFAULT_CISCO_SOFTWARE_VERSION);
bstr_replace(&conf_cisco_software_version,bstr_create_from_cfgstr((char*)conf_cisco_software_version));
*/
return 1;
}
static int init_control_port()
{
char str[30];
sprintf(str, "%d", CONF_DEFAULT_CONTROL_PORT);
conf_control_port =
(char *) cw_setstr((uint8_t **) & conf_control_port, (uint8_t *) str,
strlen(str));
#ifdef WITH_LWAPP
sprintf(str, "%d", CONF_DEFAULT_LW_CONTROL_PORT);
conf_lw_control_port = strdup(str);
#endif
return 1;
}
#include <ifaddrs.h>
static int init_listen_addrs()
{
if (conf_listen_addrs != 0)
return 1;
struct ifaddrs *ifap, *ifa;
int rc = getifaddrs(&ifap);
if (rc == -1)
return 0;
/* count the addresses */
int ctr = 0;
for (ifa = ifap; ifa != 0; ifa = ifa->ifa_next) {
if (!ifa->ifa_addr)
continue;
if (ifa->ifa_addr->sa_family == AF_INET && conf_ipv4)
ctr++;
#ifdef WITH_IPV6
if (ifa->ifa_addr->sa_family == AF_INET6 && conf_ipv6)
ctr++;
#endif
}
conf_listen_addrs = malloc(sizeof(char *) * ctr);
if (!conf_listen_addrs) {
rc = 0;
goto errX;
}
memset(conf_listen_addrs, 0, sizeof(char *) * ctr);
ctr = 0;
/* get the addresses */
for (ifa = ifap; ifa != 0; ifa = ifa->ifa_next) {
char str[100];
/** ignore loopback interfaces if configured*/
if (!conf_use_loopback) {
if ((ifa->ifa_flags & IFF_LOOPBACK)) {
continue;
}
}
if (!ifa->ifa_addr)
continue;
if (ifa->ifa_addr->sa_family == AF_INET && conf_ipv4) {
sock_addrtostr(ifa->ifa_addr, str, 100,0);
// printf("The converter has %s\n",str);
// *strchr(str, ':') = 0;
conf_listen_addrs[ctr] =
(char *) cw_setstr((uint8_t **) & conf_listen_addrs[ctr],
(uint8_t *) str, strlen(str));
if (conf_listen_addrs[ctr])
ctr++;
}
if (ifa->ifa_addr->sa_family == AF_INET6 && conf_ipv6) {
sock_addrtostr(ifa->ifa_addr, str, 100,0);
if (strncmp(str, "fe80:", 5) == 0) {
strcat(str, "%");
strcat(str, ifa->ifa_name);
}
conf_listen_addrs[ctr] =
(char *) cw_setstr((uint8_t **) & conf_listen_addrs[ctr],
(uint8_t *) str, strlen(str));
if (conf_listen_addrs[ctr])
ctr++;
}
}
conf_listen_addrs_len = ctr;
rc = 1;
errX:
freeifaddrs(ifap);
return rc;
}
static char *conf_default_mcast_groups_ipv4[] = {
"224.0.1.140",
};
#ifdef WITH_IPV6
static char *conf_default_mcast_groups_ipv6[] = {
/* "ff01:0:0:0:0:0:0:18c",
"ff02:0:0:0:0:0:0:18c%em0",
"ff03:0:0:0:0:0:0:18c",
"ff04:0:0:0:0:0:0:18c",
"ff05:0:0:0:0:0:0:18c",
"ff06:0:0:0:0:0:0:18c"
*/
};
#endif
//#include "avltree"
#include "cw/stravltree.h"
static int add_bcast_addr(void *priv, void *addr)
{
char *s = (char *) addr;
conf_bcast_addrs[conf_bcast_addrs_len] = strdup(s);
if (conf_bcast_addrs[conf_bcast_addrs_len] != 0)
conf_bcast_addrs_len++;
return 1;
}
/*
* Initialize broadcast addresses (ipv4 only)
*/
int init_bcast_addrs()
{
if (conf_bcast_addrs)
return 1;
if (!conf_ipv4)
return 1;
struct avltree *t = stravltree_create();
if (!t)
return 0;
/* add the default broadast address */
stravltree_add(t, "255.255.255.255");
/* add all other local broadcast addresses */
struct ifaddrs *ifa0, *ifa;
int rc = getifaddrs(&ifa0);
if (rc == -1)
return 0;
for (ifa = ifa0; ifa != 0; ifa = ifa->ifa_next) {
struct sockaddr *sa;
if (!(ifa->ifa_flags & IFF_BROADCAST))
continue;
if (!conf_use_loopback) {
if ((ifa->ifa_flags & IFF_LOOPBACK))
continue;
}
sa = ifa->ifa_addr;
if (!sa)
continue;
if (sa->sa_family != AF_INET)
continue;
char str[100];
if (ifa->ifa_broadaddr) {
sock_addrtostr(ifa->ifa_broadaddr, str, 100,1);
*strchr(str, ':') = 0;
stravltree_add(t, str);
}
}
conf_bcast_addrs = malloc(t->count * sizeof(char *));
stravltree_foreach_asc(t, add_bcast_addr, 0);
stravltree_destroy(t);
freeifaddrs(ifa0);
return 1;
}
int init_mcast_groups()
{
if (conf_mcast_groups)
return 1;
int n = 0;
int n4 = 0, n6 = 0;
if (conf_ipv4) {
n4 = sizeof(conf_default_mcast_groups_ipv4) / sizeof(char *);
}
#ifdef WITH_IPV6
if (conf_ipv6) {
n6 = sizeof(conf_default_mcast_groups_ipv6) / sizeof(char *);
}
#endif
n = n4 + n6;
if (n == 0)
return 1;
conf_mcast_groups = malloc(sizeof(char *) * n);
if (!conf_mcast_groups)
return 0;
memset(conf_mcast_groups, 0, n * sizeof(char *));
int ctr = 0;
int i;
for (i = 0; i < n4; i++) {
uint8_t *g = (uint8_t *) conf_default_mcast_groups_ipv4[i];
conf_mcast_groups[ctr] =
(char *) cw_setstr((uint8_t **) & conf_mcast_groups[ctr], g,
strlen((char *) g));
if (conf_mcast_groups[ctr])
ctr++;
}
for (i = 0; i < n6; i++) {
uint8_t *g = (uint8_t *) conf_default_mcast_groups_ipv6[i];
conf_mcast_groups[ctr] =
(char *) cw_setstr((uint8_t **) & conf_mcast_groups[ctr], g,
strlen((char *) g));
if (conf_mcast_groups[ctr])
ctr++;
}
conf_mcast_groups_len = n;
return 1;
}
static int conf_read_strings(cfg_t * cfg, char *name, char ***dst, int *len)
{
int n, i;
n = cfg_size(cfg, name);
*len = n;
if (n == 0)
return 1;
*dst = malloc(sizeof(char *) * n);
if (!*dst)
return 0;
for (i = 0; i < n; i++) {
char *str = cfg_getnstr(cfg, name, i);
if (!((*dst)[i] = malloc(strlen(str) + 1))) {
*len = 0;
return 0;
}
strcpy((*dst)[i], str);
}
return 1;
}
/*
struct conf_dbg_level_names{
const char *name;
int level;
};
*/
static int conf_read_dbg_level(cfg_t * cfg)
{
const char *name = "dbg";
int n, i;
n = cfg_size(cfg, name);
for (i = 0; i < n; i++) {
char *str = cfg_getnstr(cfg, name, i);
//int u = cw_log_str2dbglevel(str);
int b = cw_strlist_get_id(cw_dbg_strings, str); //cw_log_str2dbglevel(str);
cw_dbg_set_level(b, 1);
}
return 1;
}
struct cw_Mod ** conf_mods; //[10];
char *conf_mods_dir = NULL;
static int init_mods()
{
/* conf_mods[0]=modload_ac("cisco");
conf_mods[1]=modload_ac("fortinet");
// conf_mods[2]=modload_ac("zyxel");
conf_mods[2]=modload_ac("cipwap");
conf_mods[3]=modload_ac("capwap");
conf_mods[4]=modload_ac("capwap80211");
conf_mods[5]=NULL;
*/
int i;
for(i=0; conf_mods[i]; i++){
if (conf_mods[i]->init){
conf_mods[i]->init();
}
}
return 0;
}
/*
* Read the module names from config file
*/
static int conf_read_mods(cfg_t *cfg){
int n, i;
n = cfg_size(cfg,CFG_ENTRY_MODS);
conf_mods = malloc(sizeof(struct cw_Mod *)*(n+1));
cw_dbg(DBG_INFO,"Mods directory: %s",conf_mods_dir);
cw_mod_set_mod_path(conf_mods_dir);
for (i=0; i < n; i++){
char *modname = cfg_getnstr(cfg, CFG_ENTRY_MODS, i);
struct cw_Mod * mod = cw_mod_load(modname);
if (!mod)
return 0;
cw_mod_add_to_list(mod);
}
return 1;
}
/*
void conf_init_capwap_mode()
{
if (conf_capwap_mode_str == NULL)
return;
if (0 == strcmp(conf_capwap_mode_str, "cipwap")) {
conf_capwap_mode = CW_MODE_CIPWAP;
}
if (0 == strcmp(conf_capwap_mode_str, "capwap")) {
conf_capwap_mode = CW_MODE_CAPWAP;
}
}
*/
int conf_parse_listen_addr(const char *addrstr, char *saddr, char *port, int *proto)
{
char *p = strchr(addrstr, '/');
if (!p)
*proto = AC_PROTO_CAPWAP;
else {
if (strcmp("capwap", p + 1) == 0)
*proto = AC_PROTO_CAPWAP;
else if (strcmp("lwapp", p + 1) == 0)
*proto = AC_PROTO_LWAPP;
else
*proto = AC_PROTO_UNKNOWN;
}
char *ctrlport;
switch (*proto) {
case AC_PROTO_CAPWAP:
ctrlport = CAPWAP_CONTROL_PORT_STR;
break;
case AC_PROTO_LWAPP:
ctrlport = LWAPP_CONTROL_PORT_STR;
break;
default:
ctrlport = "0";
}
int i, l;
int c = 0;
if (p)
l = p - addrstr;
else
l = strlen(addrstr);
for (i = 0; i < l; i++) {
if (addrstr[i] == ':')
c++;
}
/* no colon found, asume its ipv4 w/o port */
if (c == 0) {
strncpy(saddr, addrstr, l);
saddr[l] = 0;
strcpy(port, ctrlport);
return 0;
}
/* one colon found, so we assume, its an ipv4
* address with port */
if (c == 1) {
char *c = strchr(addrstr, ':');
strncpy(saddr, addrstr, c - addrstr);
saddr[c - addrstr] = 0;
strncpy(port, c + 1, l - (c - addrstr));
port[l - (c - addrstr) - 1] = 0;
return 0;
}
/* we assume now, its ipv6 */
char *b = strstr(addrstr, "]:");
if (!b) {
/* ippv6 w/o port */
strncpy(saddr, addrstr, l);
saddr[l] = 0;
strcpy(port, ctrlport);
return 0;
}
strncpy(saddr, addrstr + 1, b - addrstr);
saddr[b - addrstr - 1] = 0;
strncpy(port, b + 2, l - (b - addrstr) - 2);
port[l - (b - addrstr) - 2] = 0;
return 0;
}
static void errfunc(cfg_t *cfg, const char *fmt, va_list ap){
if (cfg && cfg->filename && cfg->line)
fprintf(stderr, "ERROR in %s:%d: ",
cfg->filename, cfg->line);
else if (cfg && cfg->filename)
fprintf(stderr, "ERROR in %s:", cfg->filename);
vfprintf(stderr, fmt, ap);
fprintf(stderr,"\n");
}
int read_config(const char *filename)
{
int i, n;
if (!init_control_port())
return 0;
cfg_opt_t opts[] = {
CFG_STR_LIST("mods", "{}", CFGF_NONE),
CFG_SIMPLE_STR("mods_dir", &conf_mods_dir),
CFG_STR_LIST("dbg", "{}", CFGF_NONE),
CFG_STR_LIST("listen", "{}", CFGF_NONE),
CFG_STR_LIST("mcast_groups", "{}", CFGF_NONE),
CFG_STR_LIST("broadcast_listen", "{}", CFGF_NONE),
CFG_STR_LIST("ac_ips", "{}", CFGF_NONE),
CFG_SIMPLE_STR("control_port", &conf_control_port),
CFG_SIMPLE_BOOL("strict_capwap", &conf_strict_capwap),
CFG_SIMPLE_BOOL("strict_headers", &conf_strict_headers),
CFG_SIMPLE_BOOL("use_loopback", &conf_use_loopback),
// CFG_SIMPLE_STR("capwap_mode", &conf_capwap_mode_str),
#ifdef WITH_LWAPP
CFG_SIMPLE_STR("lw_control_port", &conf_lw_control_port),
CFG_SIMPLE_BOOL("lwapp", &conf_lwapp),
#endif
CFG_SIMPLE_INT("max_wtps", &conf_max_wtps),
CFG_SIMPLE_INT("debug_level", &conf_debug_level),
CFG_SIMPLE_INT("vendor_id", &conf_vendor_id),
CFG_SIMPLE_STR("ac_id", &conf_acid),
CFG_SIMPLE_STR("ac_name", &conf_acname),
CFG_SIMPLE_STR("hardware_version", &conf_hardware_version),
CFG_SIMPLE_STR("software_version", &conf_software_version),
CFG_SIMPLE_STR("cisco_hardware_version", &conf_cisco_hardware_version),
CFG_SIMPLE_STR("cisco_software_version", &conf_cisco_software_version),
CFG_SIMPLE_STR("ssl_cert", &conf_sslcertfilename),
CFG_SIMPLE_STR("ssl_key", &conf_sslkeyfilename),
CFG_SIMPLE_STR("ssl_key_pass", &conf_sslkeypass),
CFG_SIMPLE_STR("ssl_cipher", &conf_sslcipher),
CFG_SIMPLE_STR("dtls_psk", &conf_dtls_psk),
CFG_SIMPLE_BOOL("dtls_verify_peer", &conf_dtls_verify_peer),
CFG_SIMPLE_BOOL("ipv4", &conf_ipv4),
CFG_SIMPLE_BOOL("ipv6", &conf_ipv6),
CFG_SIMPLE_STR("db_file", conf_db_file),
CFG_SIMPLE_STR("image_dir", &conf_image_dir),
CFG_END()
};
cfg_t *cfg;
cfg = cfg_init(opts, CFGF_NONE);
cfg_set_error_function(cfg, errfunc);
if (cfg_parse(cfg, filename))
return 0;
/* read debug options */
conf_read_dbg_level(cfg);
/* read the listen addresses */
conf_read_strings(cfg, "listen", &conf_listen_addrs, &conf_listen_addrs_len);
/* read multi cast groups */
conf_read_strings(cfg, "mcast_groups", &conf_mcast_groups,
&conf_mcast_groups_len);
/* read ipv4 broadcast addresses */
conf_read_strings(cfg, "broadcast_listen", &conf_bcast_addrs, &conf_bcast_addrs_len);
/* read ac_ips */
n = cfg_size(cfg, "ac_ips");
if (!(conf_ac_ips = malloc(sizeof(struct sockaddr) * n)))
return 0;
conf_ac_ips_len = n;
for (i = 0; i < n; i++) {
struct sockaddr sa;
char *str = cfg_getnstr(cfg, "ac_ips", i);
if (sock_strtoaddr(cfg_getnstr(cfg, "ac_ips", i), &sa))
conf_ac_ips[i] = sa;
else {
perror(str);
}
}
if (!conf_read_mods(cfg)){
cfg_free(cfg);
return 0;
}
cfg_free(cfg);
if (!init_acid())
return 0;
if (!init_acname())
return 0;
if (!init_version())
return 0;
if (!init_vendor_id())
return 0;
if (!init_dtls())
return 0;
if (!conf_sslcipher)
conf_sslcipher = CAPWAP_CIPHER;
if (!conf_image_dir)
conf_image_dir = CONF_DEFAULT_IMAGE_DIR;
//printf("INIT MODS\n");
// init_mods();
//printf("done init mods");
// conf_init_capwap_mode();
init_listen_addrs();
init_mcast_groups();
init_bcast_addrs();
//printf("Yea all mods inited\n");
return 1;
}
void free_config()
{
}
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