X-Git-Url: https://git.xinqibao.xyz/slstatus.git/blobdiff_plain/526955ecda819d3471e04bef63df802edbdec63f..2b8e20472378217bef7f8601cd2fc1dfee02559c:/slstatus.c

diff --git a/slstatus.c b/slstatus.c
index 6ca36e0..6d56000 100644
--- a/slstatus.c
+++ b/slstatus.c
@@ -2,54 +2,82 @@
 
 /* global libraries */
 #include <alsa/asoundlib.h>
+#include <arpa/inet.h>
+#include <fcntl.h>
+#include <ifaddrs.h>
+#include <limits.h>
+#include <locale.h>
+#include <netdb.h>
+#include <pwd.h>
 #include <stdarg.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.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>
 
-/* local libraries */
+/* local headers */
+#include "slstatus.h"
 #include "config.h"
 
-/* functions */
-void setstatus(char *str);
-char *battery();
-char *cpu_temperature();
-char *cpu_usage();
-char *datetime();
-char *ram_usage();
-char *smprintf(char *fmt, ...);
-char *volume();
-char *wifi_signal();
-
-/* global variables */
-static Display *dpy;
-
-/* set statusbar (WM_NAME) */
+/* set statusbar */
 void
-setstatus(char *str)
+setstatus(const char *str)
 {
+    /* set WM_NAME via X11 */
     XStoreName(dpy, DefaultRootWindow(dpy), str);
     XSync(dpy, False);
 }
 
+/* smprintf function */
+char *
+smprintf(const char *fmt, ...)
+{
+    va_list fmtargs;
+    char *ret = NULL;
+
+    va_start(fmtargs, fmt);
+    if (vasprintf(&ret, fmt, fmtargs) < 0)
+        return NULL;
+    va_end(fmtargs);
+
+    return ret;
+}
+
 /* battery percentage */
 char *
-battery()
+battery_perc(const char *battery)
 {
-    int battery_now, battery_full, battery_perc;
+    int now, full, perc;
+    char batterynowfile[64] = "";
+    char batteryfullfile[64] = "";
     FILE *fp;
 
+    /* generate battery nowfile path */
+    strcat(batterynowfile, batterypath);
+    strcat(batterynowfile, battery);
+    strcat(batterynowfile, "/");
+    strcat(batterynowfile, batterynow);
+
+    /* generate battery fullfile path */
+    strcat(batteryfullfile, batterypath);
+    strcat(batteryfullfile, battery);
+    strcat(batteryfullfile, "/");
+    strcat(batteryfullfile, batteryfull);
+
     /* open battery now file */
     if (!(fp = fopen(batterynowfile, "r"))) {
-        fprintf(stderr, "Error opening battery file.");
-        exit(1);
+        fprintf(stderr, "Error opening battery file.%s",batterynowfile);
+        return smprintf("n/a");
     }
 
     /* read value */
-    fscanf(fp, "%i", &battery_now);
+    fscanf(fp, "%i", &now);
 
     /* close battery now file */
     fclose(fp);
@@ -57,57 +85,34 @@ battery()
     /* open battery full file */
     if (!(fp = fopen(batteryfullfile, "r"))) {
         fprintf(stderr, "Error opening battery file.");
-        exit(1);
+        return smprintf("n/a");
     }
 
     /* read value */
-    fscanf(fp, "%i", &battery_full);
+    fscanf(fp, "%i", &full);
 
     /* close battery full file */
     fclose(fp);
 
     /* calculate percent */
-    battery_perc = battery_now / (battery_full / 100);
+    perc = now / (full / 100);
 
-    /* return batt_perc as string */
-    return smprintf("%d%%", battery_perc);
-}
-
-/* cpu temperature */
-char *
-cpu_temperature()
-{
-    int temperature;
-    FILE *fp;
-
-    /* open temperature file */
-    if (!(fp = fopen(tempfile, "r"))) {
-        fprintf(stderr, "Could not open temperature file.\n");
-        exit(1);
-    }
-
-    /* extract temperature */
-    fscanf(fp, "%d", &temperature);
-
-    /* close temperature file */
-    fclose(fp);
-
-    /* return temperature in degrees */
-    return smprintf("%d°C", temperature / 1000);
+    /* return perc as string */
+    return smprintf("%d%%", perc);
 }
 
 /* cpu percentage */
 char *
-cpu_usage()
+cpu_perc(const char *null)
 {
-    int cpu_perc;
+    int perc;
     long double a[4], b[4];
     FILE *fp;
 
     /* open stat file */
     if (!(fp = fopen("/proc/stat","r"))) {
         fprintf(stderr, "Error opening stat file.");
-        exit(1);
+        return smprintf("n/a");
     }
 
     /* read values */
@@ -122,7 +127,7 @@ cpu_usage()
     /* open stat file */
     if (!(fp = fopen("/proc/stat","r"))) {
         fprintf(stderr, "Error opening stat file.");
-        exit(1);
+        return smprintf("n/a");
     }
 
     /* read values */
@@ -132,92 +137,388 @@ cpu_usage()
     fclose(fp);
 
     /* calculate avg in this second */
-    cpu_perc = 100 * ((b[0]+b[1]+b[2]) - (a[0]+a[1]+a[2])) / ((b[0]+b[1]+b[2]+b[3]) - (a[0]+a[1]+a[2]+a[3]));
+    perc = 100 * ((b[0]+b[1]+b[2]) - (a[0]+a[1]+a[2])) / ((b[0]+b[1]+b[2]+b[3]) - (a[0]+a[1]+a[2]+a[3]));
 
-    /* return cpu_perc as string */
-    return smprintf("%d%%", cpu_perc);
+    /* return perc as string */
+    return smprintf("%d%%", perc);
 }
 
 /* date and time */
 char *
-datetime()
+datetime(const char *timeformat)
 {
     time_t tm;
-    size_t bufsize = 19;
+    size_t bufsize = 64;
     char *buf = malloc(bufsize);
 
     /* get time in format */
     time(&tm);
+    setlocale(LC_TIME, "");
     if(!strftime(buf, bufsize, timeformat, localtime(&tm))) {
+        setlocale(LC_TIME, "C");
         fprintf(stderr, "Strftime failed.\n");
-        exit(1);
+        return smprintf("n/a");
     }
 
+    setlocale(LC_TIME, "C");
     /* return time */
-    return buf;
+    char *ret = smprintf("%s", buf);
+    free(buf);
+    return ret;
+}
+
+/* disk free */
+char *
+disk_free(const char *mountpoint)
+{
+    struct statvfs fs;
+
+    /* try to open mountpoint */
+    if (statvfs(mountpoint, &fs) < 0) {
+        fprintf(stderr, "Could not get filesystem info.\n");
+        return smprintf("n/a");
+    }
+
+    /* return free */
+    return smprintf("%f", (float)fs.f_bsize * (float)fs.f_bfree / 1024 / 1024 / 1024);
+}
+
+/* disk usage percentage */
+char *
+disk_perc(const char *mountpoint)
+{
+    int perc = 0;
+    struct statvfs fs;
+
+    /* try to open mountpoint */
+    if (statvfs(mountpoint, &fs) < 0) {
+        fprintf(stderr, "Could not get filesystem info.\n");
+        return smprintf("n/a");
+    }
+
+    /* calculate percent */
+    perc = 100 * (1.0f - ((float)fs.f_bfree / (float)fs.f_blocks));
+
+    /* return perc */
+    return smprintf("%d%%", perc);
+}
+
+/* disk total */
+char *
+disk_total(const char *mountpoint)
+{
+    struct statvfs fs;
+
+    /* try to open mountpoint */
+    if (statvfs(mountpoint, &fs) < 0) {
+        fprintf(stderr, "Could not get filesystem info.\n");
+        return smprintf("n/a");
+    }
+
+    /* return total */
+    return smprintf("%f", (float)fs.f_bsize * (float)fs.f_blocks / 1024 / 1024 / 1024);
+}
+
+/* disk used */
+char *
+disk_used(const char *mountpoint)
+{
+    struct statvfs fs;
+
+    /* try to open mountpoint */
+    if (statvfs(mountpoint, &fs) < 0) {
+        fprintf(stderr, "Could not get filesystem info.\n");
+        return smprintf("n/a");
+    }
+
+    /* return used */
+    return smprintf("%f", (float)fs.f_bsize * ((float)fs.f_blocks - (float)fs.f_bfree) / 1024 / 1024 / 1024);
+}
+
+/* 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);
+}
+
+/* gid */
+char *
+gid(const char *null)
+{
+    gid_t gid;
+
+    if ((gid = getgid()) < 0) {
+        fprintf(stderr, "Could no get gid.");
+        return smprintf("n/a");
+    } else {
+        return smprintf("%d", gid);
+    }
+
+    return smprintf("n/a");
+}
+
+/* hostname */
+char *
+hostname(const char *null)
+{
+    char hostname[HOST_NAME_MAX];
+    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\n", 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 free */
+char *
+ram_free(const char *null)
+{
+    long free;
+    FILE *fp;
+
+    /* open meminfo file */
+    if (!(fp = fopen("/proc/meminfo", "r"))) {
+        fprintf(stderr, "Error opening meminfo file.");
+        return smprintf("n/a");
+    }
+
+    /* read the values */
+    fscanf(fp, "MemTotal: %*d kB\n");
+    fscanf(fp, "MemFree: %ld kB\n", &free);
+
+    /* close meminfo file */
+    fclose(fp);
+
+    /* return free ram as string */
+    return smprintf("%f", (float)free / 1024 / 1024);
 }
 
 /* ram percentage */
 char *
-ram_usage()
+ram_perc(const char *null)
 {
-    int ram_perc;
-    long total, free, available;
+    int perc;
+    long total, free, buffers, cached;
     FILE *fp;
 
     /* open meminfo file */
     if (!(fp = fopen("/proc/meminfo", "r"))) {
         fprintf(stderr, "Error opening meminfo file.");
-        exit(1);
+        return smprintf("n/a");
     }
 
     /* read the values */
     fscanf(fp, "MemTotal: %ld kB\n", &total);
     fscanf(fp, "MemFree: %ld kB\n", &free);
-    fscanf(fp, "MemAvailable: %ld kB\n", &available);
+    fscanf(fp, "MemAvailable: %ld kB\nBuffers: %ld kB\n", &buffers, &buffers);
+    fscanf(fp, "Cached: %ld kB\n", &cached);
 
     /* close meminfo file */
     fclose(fp);
 
     /* calculate percentage */
-    ram_perc = 100 * (total - available) / total;
+    perc = 100 * ((total - free) - (buffers + cached)) / total;
 
-    /* return ram_perc as string */
-    return smprintf("%d%%",ram_perc);
+    /* return perc as string */
+    return smprintf("%d%%", perc);
 }
 
-/* smprintf function */
+/* ram total */
 char *
-smprintf(char *fmt, ...)
+ram_total(const char *null)
 {
-    va_list fmtargs;
-    char *ret;
-    int len;
+    long total;
+    FILE *fp;
 
-    va_start(fmtargs, fmt);
-    len = vsnprintf(NULL, 0, fmt, fmtargs);
-    va_end(fmtargs);
+    /* open meminfo file */
+    if (!(fp = fopen("/proc/meminfo", "r"))) {
+        fprintf(stderr, "Error opening meminfo file.");
+        return smprintf("n/a");
+    }
 
-    ret = malloc(++len);
-    if (ret == NULL) {
-        fprintf(stderr, "Malloc error.");
-        exit(1);
+    /* read the values */
+    fscanf(fp, "MemTotal: %ld kB\n", &total);
+
+    /* close meminfo file */
+    fclose(fp);
+
+    /* return total ram as string */
+    return smprintf("%f", (float)total / 1024 / 1024);
+}
+
+/* ram used */
+char *
+ram_used(const char *null)
+{
+    long free, total, buffers, cached, used;
+    FILE *fp;
+
+    /* open meminfo file */
+    if (!(fp = fopen("/proc/meminfo", "r"))) {
+        fprintf(stderr, "Error opening meminfo file.");
+        return smprintf("n/a");
     }
 
-    va_start(fmtargs, fmt);
-    vsnprintf(ret, len, fmt, fmtargs);
-    va_end(fmtargs);
+    /* read the values */
+    fscanf(fp, "MemTotal: %ld kB\n", &total);
+    fscanf(fp, "MemFree: %ld kB\n", &free);
+    fscanf(fp, "MemAvailable: %ld kB\nBuffers: %ld kB\n", &buffers, &buffers);
+    fscanf(fp, "Cached: %ld kB\n", &cached);
 
-    return ret;
+    /* close meminfo file */
+    fclose(fp);
+
+    /* calculate used */
+    used = total - free - buffers - cached;
+
+    /* return used ram as string */
+    return smprintf("%f", (float)used / 1024 / 1024);
+}
+
+/* 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);
 }
 
+/* username */
+char *
+username(const char *null)
+{
+    register struct passwd *pw;
+    register uid_t uid;
+
+    /* get the values */
+    uid = geteuid ();
+    pw = getpwuid (uid);
+
+    /* if it worked, return */
+    if (pw) {
+        return smprintf("%s", pw->pw_name);
+    }
+    else {
+        fprintf(stderr, "Could not get username.\n");
+        return smprintf("n/a");
+    }
+
+    return smprintf("n/a");
+}
+
+/* uid */
+char *
+uid(const char *null)
+{
+    register uid_t uid;
+
+    /* get the values */
+    uid = geteuid ();
+
+    /* if it worked, return */
+    if (uid) {
+        return smprintf("%d", uid);
+    }
+    else {
+        fprintf(stderr, "Could not get uid.\n");
+        return smprintf("n/a");
+    }
+
+    return smprintf("n/a");
+}
+
+
 /* alsa volume percentage */
 char *
-volume()
+vol_perc(const char *soundcard)
 {
     int mute = 0;
     long vol = 0, max = 0, min = 0;
-        
+
     /* get volume from alsa */
     snd_mixer_t *handle;
     snd_mixer_elem_t *pcm_mixer, *mas_mixer;
@@ -232,12 +533,9 @@ volume()
     snd_mixer_selem_id_set_name(mute_info, channel);
     pcm_mixer = snd_mixer_find_selem(handle, vol_info);
     mas_mixer = snd_mixer_find_selem(handle, mute_info);
-    snd_mixer_selem_get_playback_volume_range((snd_mixer_elem_t *)pcm_mixer,
-                    &min, &max);
-    snd_mixer_selem_get_playback_volume((snd_mixer_elem_t *)pcm_mixer,
-                    SND_MIXER_SCHN_MONO, &vol);
-    snd_mixer_selem_get_playback_switch(mas_mixer, SND_MIXER_SCHN_MONO,
-                    &mute);
+    snd_mixer_selem_get_playback_volume_range((snd_mixer_elem_t *)pcm_mixer, &min, &max);
+    snd_mixer_selem_get_playback_volume((snd_mixer_elem_t *)pcm_mixer, SND_MIXER_SCHN_MONO, &vol);
+    snd_mixer_selem_get_playback_switch(mas_mixer, SND_MIXER_SCHN_MONO, &mute);
     if (vol_info)
         snd_mixer_selem_id_free(vol_info);
     if (mute_info)
@@ -247,34 +545,34 @@ volume()
 
     /* return the string (mute) */
     if (!mute)
-        return "mute";
+        return smprintf("mute");
     else
         return smprintf("%d%%", (vol * 100) / max);
 }
 
 /* wifi percentage */
 char *
-wifi_signal()
+wifi_perc(const char *wificard)
 {
     int bufsize = 255;
     int strength;
     char buf[bufsize];
     char *datastart;
-    char path_start[16] = "/sys/class/net/";
-    char path_end[11] = "/operstate";
-    char path[32];
+    char path[64];
     char status[5];
+    char needle[sizeof wificard + 1];
     FILE *fp;
 
     /* generate the path name */
-    strcat(path, path_start);
+    memset(path, 0, sizeof path);
+    strcat(path, "/sys/class/net/");
     strcat(path, wificard);
-    strcat(path, path_end);
+    strcat(path, "/operstate");
 
     /* open wifi file */
     if(!(fp = fopen(path, "r"))) {
         fprintf(stderr, "Error opening wifi operstate file.");
-        exit(1);
+        return smprintf("n/a");
     }
 
     /* read the status */
@@ -285,20 +583,22 @@ wifi_signal()
 
     /* check if interface down */
     if(strcmp(status, "up\n") != 0){
-        return "n/a";
+        return smprintf("n/a");
     }
 
     /* open wifi file */
     if (!(fp = fopen("/proc/net/wireless", "r"))) {
         fprintf(stderr, "Error opening wireless file.");
-        exit(1);
+        return smprintf("n/a");
     }
 
     /* extract the signal strength */
+    strcpy(needle, wificard);
+    strcat(needle, ":");
     fgets(buf, bufsize, fp);
     fgets(buf, bufsize, fp);
     fgets(buf, bufsize, fp);
-    if ((datastart = strstr(buf, "wlp3s0:")) != NULL) {
+    if ((datastart = strstr(buf, needle)) != NULL) {
         datastart = strstr(buf, ":");
         sscanf(datastart + 1, " %*d   %d  %*d  %*d        %*d      %*d      %*d      %*d      %*d        %*d", &strength);
     }
@@ -314,18 +614,35 @@ wifi_signal()
 int
 main()
 {
-    char status[1024];
+    char status_string[1024];
+    struct arg argument;
 
-    /* open display */
+    /* try to open display */
     if (!(dpy = XOpenDisplay(0x0))) {
         fprintf(stderr, "Cannot open display!\n");
         exit(1);
     }
 
-    /* return status every second */	
+    /* return status every interval */
     for (;;) {
-        sprintf(status, FORMATSTRING, ARGUMENTS);
-        setstatus(status);
+        /* clear the string */
+        memset(status_string, 0, sizeof(status_string));
+
+        /* generate status_string */
+        for (size_t i = 0; i < sizeof(args) / sizeof(args[0]); ++i) {
+            argument = args[i];
+            char *res = argument.func(argument.args);
+            char *element = smprintf(argument.format, res);
+            strcat(status_string, element);
+            free(res);
+            free(element);
+        }
+
+        /* return the statusbar */
+        setstatus(status_string);
+
+        /* wait, "update_interval - 1" because of get_cpu_usage() which uses 1 second */
+        sleep(update_interval -1);
     }
 
     /* close display */