/* 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 . */ #include #include #include #include #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; 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; 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_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() { int i; char *s; 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; }; conf_acid = malloc(2 * conf_macaddress_len + 1); 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 static int init_listen_addrs() { struct ifaddrs *ifap, *ifa; int rc; int ctr; if (conf_listen_addrs != 0) return 1; rc = getifaddrs(&ifap); if (rc == -1) return 0; /* count the addresses */ 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); 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", /* "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 /* static int add_bcast_addr(void *priv, void *addr) { printf("Callback Called\n"); union mavldata *ud; ud = addr; printf("Callback Called %s\n", ud->str); 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() { int rc; char str[100]; struct ifaddrs *ifa0, *ifa; mavl_t t; mavliter_t it; if (conf_bcast_addrs) return 1; if (!conf_ipv4) return 1; t = mavl_create_str(); if (t==NULL) return 0; /* add the default broadast address */ mavl_add_str(t, cw_strdup("255.255.255.255")); /* add all other local broadcast addresses */ 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; if (ifa->ifa_broadaddr) { sock_addrtostr(ifa->ifa_broadaddr, str, 100,1); *strchr(str, ':') = 0; mavl_add_str(t, cw_strdup(str)); } } conf_bcast_addrs = malloc(t->count * sizeof(char *)); mavliter_init(&it,t); mavliter_foreach(&it){ char * d; d = mavliter_get_str(&it); conf_bcast_addrs[conf_bcast_addrs_len] = cw_strdup(d); if (conf_bcast_addrs[conf_bcast_addrs_len] != 0) conf_bcast_addrs_len++; } mavl_destroy(t); freeifaddrs(ifa0); return 1; } int init_mcast_groups() { int ctr; int i; int n = 0; int n4 = 0, n6 = 0; if (conf_mcast_groups) return 1; if (conf_ipv4) { n4 = sizeof(conf_default_mcast_groups_ipv4) / sizeof(char *); } if (conf_ipv6) { n6 = sizeof(conf_default_mcast_groups_ipv6) / sizeof(char *); } 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 *)); ctr = 0; 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 b = cw_strlist_get_id(cw_dbg_strings, str); cw_dbg_set_level(b, 1); } return 1; } struct cw_Mod ** conf_mods; char *conf_mods_dir = NULL; /* * 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 *b; int c; int i, l; char *ctrlport; 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; } 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"; } 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 */ 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; 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; if (!init_control_port()) return 0; 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; init_listen_addrs(); init_mcast_groups(); init_bcast_addrs(); return 1; } void free_config() { }