hostname function

[slstatus.git] / slstatus.c

diff --git a/slstatus.c b/slstatus.c
index 76df821..5bbf58a 100644 (file)
--- a/slstatus.c
+++ b/slstatus.c
@@ -2,8 +2,11 @@
 
 /* global libraries */
 #include <alsa/asoundlib.h>
 
 /* global libraries */
 #include <alsa/asoundlib.h>

+#include <arpa/inet.h>

 #include <fcntl.h>
 #include <fcntl.h>

+#include <ifaddrs.h>

 #include <locale.h>
 #include <locale.h>

+#include <netdb.h>

 #include <stdarg.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <stdarg.h>
 #include <stdio.h>
 #include <stdlib.h>


@@ -11,6 +14,7 @@
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <sys/statvfs.h>
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <sys/statvfs.h>

+#include <sys/socket.h>

 #include <time.h>
 #include <unistd.h>
 #include <X11/Xlib.h>
 #include <time.h>
 #include <unistd.h>
 #include <X11/Xlib.h>


@@ -45,7 +49,7 @@ smprintf(const char *fmt, ...)
 
 /* battery percentage */
 char *
 
 /* battery percentage */
 char *

-get_battery(const char *battery)
+battery_perc(const char *battery)

 {
     int now, full, perc;
     char batterynowfile[64] = "";
 {
     int now, full, perc;
     char batterynowfile[64] = "";


@@ -95,32 +99,9 @@ get_battery(const char *battery)
     return smprintf("%d%%", perc);
 }
 
     return smprintf("%d%%", perc);
 }
 

-/* cpu temperature */
-char *
-get_cpu_temperature(const char *file)
-{
-    int temperature;
-    FILE *fp;
-
-    /* open temperature file */
-    if (!(fp = fopen(file, "r"))) {
-        fprintf(stderr, "Could not open temperature file.\n");
-        return smprintf("n/a");
-    }
-
-    /* extract temperature */
-    fscanf(fp, "%d", &temperature);
-
-    /* close temperature file */
-    fclose(fp);
-
-    /* return temperature in degrees */
-    return smprintf("%d°C", temperature / 1000);
-}
-

 /* cpu percentage */
 char *
 /* cpu percentage */
 char *

-get_cpu_usage(const char *null)
+cpu_perc(const char *null)

 {
     int perc;
     long double a[4], b[4];
 {
     int perc;
     long double a[4], b[4];


@@ -162,7 +143,7 @@ get_cpu_usage(const char *null)
 
 /* date and time */
 char *
 
 /* date and time */
 char *

-get_datetime(const char *timeformat)
+datetime(const char *timeformat)

 {
     time_t tm;
     size_t bufsize = 64;
 {
     time_t tm;
     size_t bufsize = 64;


@@ -179,12 +160,14 @@ get_datetime(const char *timeformat)
 
     setlocale(LC_TIME, "C");
     /* return time */
 
     setlocale(LC_TIME, "C");
     /* return time */

-    return smprintf("%s", buf);
+    char *ret = smprintf("%s", buf);
+    free(buf);
+    return ret;

 }
 
 /* disk usage percentage */
 char *
 }
 
 /* disk usage percentage */
 char *

-get_diskusage(const char *mountpoint)
+disk_perc(const char *mountpoint)

 {
     int perc = 0;
     struct statvfs fs;
 {
     int perc = 0;
     struct statvfs fs;


@@ -202,9 +185,96 @@ get_diskusage(const char *mountpoint)
     return smprintf("%d%%", perc);
 }
 
     return smprintf("%d%%", perc);
 }
 

+/* entropy available */
+char *
+entropy(const char *null)
+{
+    int entropy = 0;
+    FILE *fp;
+
+    /* open entropy file */
+    if (!(fp = fopen("/proc/sys/kernel/random/entropy_avail", "r"))) {
+        fprintf(stderr, "Could not open entropy file.\n");
+        return smprintf("n/a");
+    }
+
+    /* extract entropy */
+    fscanf(fp, "%d", &entropy);
+
+    /* close entropy file */
+    fclose(fp);
+
+    /* return entropy */
+    return smprintf("%d", entropy);
+}
+
+/* hostname */
+char *
+hostname(const char *null)
+{
+    char *hostname = "";
+    FILE *fp;
+
+    /* open hostname file */
+    if (!(fp = fopen("/proc/sys/kernel/hostname", "r"))) {
+        fprintf(stderr, "Could not open hostname file.\n");
+        return smprintf("n/a");
+    }
+
+    /* extract hostname */
+    fscanf(fp, "%s", hostname);
+
+    /* close hostname file */
+    fclose(fp);
+
+    /* return entropy */
+    return smprintf("%s", hostname);
+}
+
+/* ip address */
+char *
+ip(const char *interface)
+{
+    struct ifaddrs *ifaddr, *ifa;
+    int s;
+    char host[NI_MAXHOST];
+
+    /* check if getting ip address works */
+    if (getifaddrs(&ifaddr) == -1)
+    {
+        fprintf(stderr, "Error getting IP address.");
+        return smprintf("n/a");
+    }
+
+    /* get the ip address */
+    for (ifa = ifaddr; ifa != NULL; ifa = ifa->ifa_next)
+    {
+        if (ifa->ifa_addr == NULL)
+            continue;
+
+        s = getnameinfo(ifa->ifa_addr, sizeof(struct sockaddr_in), host, NI_MAXHOST, NULL, 0, NI_NUMERICHOST);
+
+        if ((strcmp(ifa->ifa_name, interface) == 0) && (ifa->ifa_addr->sa_family == AF_INET))
+        {
+            if (s != 0)
+            {
+                fprintf(stderr, "Error getting IP address.");
+                return smprintf("n/a");
+            }
+            return smprintf("%s", host);
+        }
+    }
+
+    /* free the address */
+    freeifaddrs(ifaddr);
+
+    /* return n/a if nothing works */
+    return smprintf("n/a");
+}
+

 /* ram percentage */
 char *
 /* ram percentage */
 char *

-get_ram_usage(const char *null)
+ram_perc(const char *null)

 {
     int perc;
     long total, free, buffers, cached;
 {
     int perc;
     long total, free, buffers, cached;


@@ -232,9 +302,32 @@ get_ram_usage(const char *null)
     return smprintf("%d%%", perc);
 }
 
     return smprintf("%d%%", perc);
 }
 

+/* temperature */
+char *
+temp(const char *file)
+{
+    int temperature;
+    FILE *fp;
+
+    /* open temperature file */
+    if (!(fp = fopen(file, "r"))) {
+        fprintf(stderr, "Could not open temperature file.\n");
+        return smprintf("n/a");
+    }
+
+    /* extract temperature */
+    fscanf(fp, "%d", &temperature);
+
+    /* close temperature file */
+    fclose(fp);
+
+    /* return temperature in degrees */
+    return smprintf("%d°C", temperature / 1000);
+}
+

 /* alsa volume percentage */
 char *
 /* alsa volume percentage */
 char *

-get_volume(const char *soundcard)
+vol_perc(const char *soundcard)

 {
     int mute = 0;
     long vol = 0, max = 0, min = 0;
 {
     int mute = 0;
     long vol = 0, max = 0, min = 0;


@@ -272,7 +365,7 @@ get_volume(const char *soundcard)
 
 /* wifi percentage */
 char *
 
 /* wifi percentage */
 char *

-get_wifi_signal(const char *wificard)
+wifi_perc(const char *wificard)

 {
     int bufsize = 255;
     int strength;
 {
     int bufsize = 255;
     int strength;


@@ -346,7 +439,7 @@ main()
     /* return status every interval */
     for (;;) {
         /* clear the string */
     /* return status every interval */
     for (;;) {
         /* clear the string */

-        strcpy(status_string, "");
+        memset(status_string, 0, sizeof(status_string));

 
         /* generate status_string */
         for (size_t i = 0; i < sizeof(args) / sizeof(args[0]); ++i) {
 
         /* generate status_string */
         for (size_t i = 0; i < sizeof(args) / sizeof(args[0]); ++i) {


@@ -354,6 +447,8 @@ main()
             char *res = argument.func(argument.args);
             char *element = smprintf(argument.format, res);
             strcat(status_string, element);
             char *res = argument.func(argument.args);
             char *element = smprintf(argument.format, res);
             strcat(status_string, element);

+            free(res);
+            free(element);

         }
 
         /* return the statusbar */
         }
 
         /* return the statusbar */