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/*
* Olivier Blin (oblin)
* Martin Whitaker (martinw)
*
* Copyright 2005 Mandriva
* Copyright 2020 Mageia
*
* This software may be freely redistributed under the terms of the GNU
* public license.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
#include <sys/ioctl.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <errno.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <linux/types.h>
#include <linux/if.h>
#include <linux/wireless.h>
#include "automatic.h"
#include "stage1.h"
#include "log.h"
#include "utils.h"
#include "wireless.h"
#define WPA_SUPPLICANT_CONF "/etc/wpa_supplicant.conf"
#define WPA_SUPPLICANT_CTRL "/var/run/wpa_supplicant"
#define WPA_SUPPLICANT_LOG "/var/log/wpa_supplicant.log"
#define WPA_SUPPLICANT_PID "/var/run/wpa_supplicant.pid"
int wireless_open_socket()
{
return socket(AF_INET, SOCK_DGRAM, 0);
}
int wireless_close_socket(int socket)
{
return close(socket);
}
static int wireless_ioctl(int socket, const char *ifname, int request, struct iwreq *wrq)
{
strncpy(wrq->ifr_name, ifname, IFNAMSIZ);
return ioctl(socket, request, wrq);
}
int wireless_is_aware(int socket, const char *ifname)
{
struct iwreq wrq;
return wireless_ioctl(socket, ifname, SIOCGIWNAME, &wrq) == 0;
}
enum return_type configure_wireless(const char *ifname)
{
enum return_type results;
char * security[] = { "No security", "WEP", "WPA/WPA2 Personal", NULL };
char * security_auto[] = { "none", "wep", "wpa_psk", NULL };
char * choice = NULL;
char * message = NULL;
char * questions[] = { "ESSID", "", NULL };
char * questions_auto[] = { "essid", "" };
char * key_mgmt = NULL;
static char ** answers = NULL;
FILE * fd;
char cmd[256];
int status;
int wsock = wireless_open_socket();
if (!wireless_is_aware(wsock, ifname)) {
log_message("interface %s doesn't support wireless", ifname);
wireless_close_socket(wsock);
return RETURN_OK;
}
wireless_close_socket(wsock);
results = ask_from_list_auto("Please select your wireless security mode.",
security, &choice, "wireless_security", security_auto);
if (results != RETURN_OK) {
return RETURN_BACK;
}
if (streq(choice, security[2])) {
message = "Please enter your wireless settings. "
"The ESSID is your wireless network identifier. "
"The passphrase must be a string of between 8 and 63 ASCII characters.";
questions[1] = "passphrase";
questions_auto[1] = "wpa_psk";
key_mgmt = "WPA-PSK";
} else if (streq(choice, security[1])) {
message = "Please enter your wireless settings. "
"The ESSID is your wireless network identifier. "
"The WEP key must be either a string of 10 or 26 hexadecimal digits, without any separators, "
"or a string of 5 or 13 ASCII characters enclosed in double quote marks (e.g. \"12345\").";
questions[1] = "WEP key";
questions_auto[1] = "wep_key";
key_mgmt = "NONE";
} else {
message = "Please enter your wireless settings. "
"The ESSID is your wireless network identifier.";
questions[1] = NULL;
questions_auto[1] = NULL;
key_mgmt = "NONE";
}
results = ask_from_entries_auto(message, questions, &answers, 32, questions_auto, NULL);
if (results != RETURN_OK) {
return RETURN_BACK;
}
fd = fopen(WPA_SUPPLICANT_PID, "r");
if (fd) {
unsigned pid = 0;
unsigned count = fscanf(fd, "%u", &pid);
fclose(fd);
if (count == 1 && pid > 1) {
log_message("terminating wpa_supplicant (pid %u)", pid);
kill(pid, SIGQUIT);
sleep(1);
}
}
fd = fopen(WPA_SUPPLICANT_CONF, "w");
if (fd == NULL) {
stg1_error_message("unable to create " WPA_SUPPLICANT_CONF ": %s", strerror(errno));
return RETURN_ERROR;
}
fprintf(fd, "ctrl_interface=" WPA_SUPPLICANT_CTRL "\n");
fprintf(fd, "ap_scan=1\n");
fprintf(fd, "network={\n");
fprintf(fd, " key_mgmt=%s\n", key_mgmt);
fprintf(fd, " scan_ssid=1\n");
fprintf(fd, " ssid=\"%s\"\n", answers[0]);
if (streq(choice, security[2])) {
fprintf(fd, " psk=\"%s\"\n", answers[1]);
} else if (streq(choice, security[1])) {
fprintf(fd, " wep_key0=%s\n", answers[1]);
}
fprintf(fd, "}\n");
fclose(fd);
snprintf(cmd, sizeof(cmd), "/usr/sbin/wpa_supplicant -D nl80211,wext -B -i %s -c %s -f %s -P %s",
ifname, WPA_SUPPLICANT_CONF, WPA_SUPPLICANT_LOG, WPA_SUPPLICANT_PID);
log_message("running %s", cmd);
status = system(cmd);
if (status != 0) {
stg1_error_message("unable to start wpa_supplicant daemon for interface \"%s\": %d", ifname, status);
return RETURN_ERROR;
}
return RETURN_OK;
}
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