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// vim:ts=8:expandtab
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <limits.h>
#ifdef LINUX
#include <iwlib.h>
#endif
#include "i3status.h"
static const char *get_wireless_essid(const char *interface) {
static char part[512];
#ifdef LINUX
int skfd;
if ((skfd = iw_sockets_open()) < 0) {
perror("socket");
exit(-1);
}
struct wireless_config wcfg;
if (iw_get_basic_config(skfd, interface, &wcfg) >= 0)
snprintf(part, sizeof(part), "%s", wcfg.essid);
else part[0] = '\0';
(void)close(skfd);
#else
part[0] = '\0';
#endif
return part;
}
/*
* Just parses /proc/net/wireless looking for lines beginning with
* wlan_interface, extracting the quality of the link and adding the
* current IP address of wlan_interface.
*
*/
void print_wireless_info(const char *interface, const char *format_up, const char *format_down) {
char buf[1024];
int quality = -1;
char *interfaces;
const char *walk;
memset(buf, 0, sizeof(buf));
if (!slurp("/proc/net/wireless", buf, sizeof(buf)))
die("Could not open \"/proc/net/wireless\"\n");
interfaces = skip_character(buf, '\n', 1) + 1;
while ((interfaces = skip_character(interfaces, '\n', 1)+1) < buf+strlen(buf)) {
while (isspace((int)*interfaces))
interfaces++;
if (!BEGINS_WITH(interfaces, interface))
continue;
if (sscanf(interfaces, "%*[^:]: 0000 %d", &quality) != 1)
continue;
break;
}
/* Interface could not be found */
if (quality == -1)
return;
if ((quality == UCHAR_MAX) || (quality == 0)) {
walk = format_down;
printf("%s", color("#FF0000"));
} else {
printf("%s", color("#00FF00"));
walk = format_up;
}
for (; *walk != '\0'; walk++) {
if (*walk != '%') {
putchar(*walk);
continue;
}
if (BEGINS_WITH(walk+1, "quality")) {
(void)printf("%03d%%", quality);
walk += strlen("quality");
}
if (BEGINS_WITH(walk+1, "essid")) {
(void)printf("%s", get_wireless_essid(interface));
walk += strlen("essid");
}
if (BEGINS_WITH(walk+1, "ip")) {
(void)printf("%s", get_ip_addr(interface));
walk += strlen("ip");
}
}
(void)printf("%s", endcolor());
}
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