static void wireless_applet_scan (WirelessApplet *applet) { GList *filtered_list = NULL; GList *l = NULL; GList *ap_list = NULL; time_t stamp = 0; iw_scan (applet->skfd, applet->device, scan_handler, applet); ap_list = applet->scan_list; applet->scan_list = NULL; for (l = ap_list; l; l = l->next) { wireless_ap *ap = l->data; wireless_ap *found_ap = find_ap (filtered_list, ap->essid); if (found_ap != NULL) { if (found_ap->quality < ap->quality) { /* we want to display the max quality of * a given essid */ found_ap->quality = ap->quality; iw_wireless_ap_free (ap); } } else { filtered_list = g_list_append (filtered_list, ap); } } g_list_free (ap_list); for (l = filtered_list; l; l = l->next) { wireless_ap *ap = l->data; GtkTreeIter iter; if (!wireless_applet_find_mac (applet, ap->address, &iter)) { gtk_list_store_append (applet->ap_store, &iter); } gtk_list_store_set (applet->ap_store, &iter, 0, ap, -1); stamp = ap->stamp; } if (stamp != 0) { wireless_applet_remove_old_ap (applet, stamp); } //g_list_foreach (filtered_list, (GFunc)iw_wireless_ap_free, NULL); g_list_free (filtered_list); }
int refresh_list() { clear(); attrset(COLOR_PAIR(3)|A_BOLD); printw("\n\n Getting wifi listing ...\n"); refresh(); iw_scan(skfd,ifname,we_ver,&context); wireless_scan *ws; int n; for (ws = context.result, n=0; ws; ws = ws->next) if ((mode & MODE_HIDDEN) || strlen(ws->b.essid)) n++; clear(); return n-1; }
int netcfg_wireless_show_essids(struct debconfclient *client, struct netcfg_interface *interface) { wireless_scan_head network_list; wireless_config wconf; char *buffer; int essid_list_len = 1; iw_get_basic_config (wfd, interface->name, &wconf); interface_up(interface->name); if (iw_scan(wfd, interface->name, iw_get_kernel_we_version(), &network_list) >= 0 ) { wireless_scan *network; di_info("Scan of wireless interface %s succeeded.", interface->name); /* Determine the actual length of the buffer. */ for (network = network_list.result; network; network = network->next) { if (!exists_in_network_list(network_list, network)) { essid_list_len += (strlen(network->b.essid) + 2); } } /* Buffer initialization. */ buffer = malloc(essid_list_len * sizeof(char)); if (buffer == NULL) { /* Error in memory allocation. */ di_warning("Unable to allocate memory for network list buffer."); return ENTER_MANUALLY; } strcpy(buffer, ""); /* Create list of available ESSIDs. */ for (network = network_list.result; network; network = network->next) { if (!exists_in_network_list(network_list, network)) { strcat(buffer, network->b.essid); strcat(buffer, ", "); } } /* Asking the user. */ debconf_capb(client, "backup"); debconf_subst(client, "netcfg/wireless_show_essids", "essid_list", buffer); debconf_fset(client, "netcfg/wireless_show_essids", "seen", "false"); debconf_input(client, "high", "netcfg/wireless_show_essids"); if (debconf_go(client) == CMD_GOBACK) { debconf_fset(client, "netcfg/wireless_show_essids", "seen", "false"); free_network_list(&network_list.result); free(buffer); return GO_BACK; } debconf_get(client, "netcfg/wireless_show_essids"); /* User wants to enter an ESSID manually. */ if (strcmp(client->value, "manual") == 0) { free_network_list(&network_list.result); free(buffer); return ENTER_MANUALLY; } /* User has chosen a network from the list, need to find which one and * get its cofiguration. */ for (network = network_list.result; network; network = network->next) { if (strcmp(network->b.essid, client->value) == 0) { wconf = network->b; interface->essid = strdup(network->b.essid); break; } } /* Free the network list. */ free_network_list(&network_list.result); free(buffer); } else { /* Go directly to choosing manually, use the wireless_essid_again * question. */ if (netcfg_wireless_choose_essid_manually(client, interface, "netcfg/wireless_essid_again") == GO_BACK) { return GO_BACK; } return 0; } iw_set_basic_config(wfd, interface->name, &wconf); interface_down(interface->name); di_info("Network chosen: %s. Proceeding to connect.", interface->essid); return 0; }
int main(int argc, const char **argv) { /* Check uid */ if (getuid() != 0) { fprintf(stderr,"Swifer must be run as root.\n"); return 1; } /* Check config file for interface and dhcp */ FILE *cfg; if ( (cfg=fopen(config,"r")) ) { char *line = calloc(MAX_LINE+1,sizeof(char)); char *val = calloc(MAX_LINE+1,sizeof(char)); while (fgets(line,MAX_LINE,cfg) != NULL) { if (line[0] == '#') continue; if (sscanf(line,"INTERFACE = %s",val)) strncpy(ifname,val,IFNAMSIZ); else if (sscanf(line,"DHCP = %s",val)) strncpy(dhcp,val,DHCPLEN); else if (sscanf(line,"PRE_UP = %s",val)) hook_preup = strdup(val); else if (sscanf(line,"POST_UP = %s",val)) hook_postup = strdup(val); else if (strncmp(line,"[NETWORKS]",10)==0) break; } free(line); free(val); fclose(cfg); } /* Get basic wifi info */ we_ver = iw_get_kernel_we_version(); skfd = iw_sockets_open(); iw_get_basic_config(skfd,ifname,&cur); /* Bring up interface (eg "ip link set IFACE up") */ struct ifreq req; int err; strncpy(req.ifr_name,ifname,IFNAMSIZ); if ( (err=ioctl(skfd,SIOCGIFFLAGS,&req)) ){ int loop = 0; while ( (err=ioctl(skfd,SIOCGIFFLAGS,&req)) ) { usleep(100000); if (loop++ > 50) break; } if (err) { close(skfd); return 2; } } req.ifr_flags |= IFF_UP; if (ioctl(skfd,SIOCSIFFLAGS,&req)) { close(skfd); return 3; } /* Processes command line arguments */ int i; for (i = 1; i < argc; i++) { if (strncmp(argv[i],"ad",2)==0) mode |= MODE_ADD; else if (strncmp(argv[i],"au",2)==0) mode |= MODE_AUTO; else if (strncmp(argv[i],"hi",2)==0) mode |= MODE_HIDDEN; else if (strncmp(argv[i],"an",2)==0) mode |= (MODE_ANY | MODE_AUTO); else if (strncmp(argv[i],"re",2)==0) mode |= (MODE_RECONNECT | MODE_AUTO); else if (strncmp(argv[i],"ve",2)==0) mode |= MODE_VERBOSE; else if (strncmp(argv[i],"wa",2)==0) mode |= MODE_WAIT; else if (strncmp(argv[i],"de",2)==0) { if (argc > i+1) remove_network(argv[i+1]); } else fprintf(stderr,"[%s] Ignoring unknown parameter: %s\n", argv[0],argv[i]); } if ( (mode & MODE_VERBOSE) && (mode & MODE_AUTO) ) mode &= ~MODE_VERBOSE; /* Scan and select network */ iw_scan(skfd,ifname,we_ver,&context); wireless_scan *ws; if (mode & MODE_AUTO) { if (mode && MODE_WAIT) { int loops; /* keep trying for up to 5 minutes */ for (loops = 0; loops < 30 && !(ws=get_best()); ++loops) sleep(TIMEOUT); } else ws = get_best(); } else ws = show_menu(); const char *arg[4]; if (ws) { /* Stop any current processes then connect to "ws" */ arg[0] = killall; arg[1] = dhcp; arg[2] = NULL; if (fork()==0) { fclose(stdout); fclose(stderr); execvp(arg[0],(char * const *) arg); } arg[1] = wpa_sup; if (fork()==0) { fclose(stdout); fclose(stderr); execvp(arg[0],(char * const *) arg); } sleep(1); if ( (mode & MODE_ADD) && is_known(ws) ) mode &= ~MODE_ADD; if (ws->b.key_flags == 2048) mode |= MODE_SECURE; mode_t pre = umask(S_IWGRP|S_IWOTH|S_IRGRP|S_IROTH); ws_connect(ws); umask(pre); } else if ( !(mode & MODE_RECONNECT) ) { fprintf(stderr,"[swifer] no suitable networks found.\n"); return 5; } /* Keep alive to reconnect? */ iw_sockets_close(skfd); if (mode & MODE_RECONNECT) { if (fork() == 0) { setsid(); int level = THRESHOLD + 1, ret; char scanline[256]; snprintf(scanline,255,"%%*[^\n]\n%%*[^\n]\n%s: %%*d %%d.",ifname); FILE *procw; while (level > THRESHOLD) { sleep(TIMEOUT); procw = fopen(PROC_NET_WIRELESS,"r"); ret = fscanf(procw,scanline,&level); fclose(procw); if (ret != 1) level = 0; } arg[0] = argv[0]; arg[1] = re; arg[2] = an; arg[3] = NULL; if ( !(mode & MODE_ANY)) arg[2] = NULL; execvp(arg[0],(char * const *) arg); } } if (hook_preup) free(hook_preup); if (hook_postup) free(hook_postup); return 0; }