X-Git-Url: https://git.xinqibao.xyz/slstatus.git/blobdiff_plain/b176d0a2d0e3048f22b35083ea7d6571aaa69260..093f39df23da146cc88e9987469081e5b3016cfe:/slstatus.c

diff --git a/slstatus.c b/slstatus.c
index d6f5e2d..505f25d 100644
--- a/slstatus.c
+++ b/slstatus.c
@@ -2,43 +2,29 @@
 
 /* global libraries */
 #include <alsa/asoundlib.h>
+#include <arpa/inet.h>
 #include <fcntl.h>
+#include <ifaddrs.h>
+#include <limits.h>
+#include <linux/wireless.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/ioctl.h>
 #include <sys/stat.h>
 #include <sys/statvfs.h>
+#include <sys/socket.h>
+#include <sys/types.h>
 #include <time.h>
 #include <unistd.h>
 #include <X11/Xlib.h>
 
-/* global variables */
-static Display *dpy;
-
-/* statusbar configuration type and struct */
-typedef char *(*op_fun) (const char *);
-struct arg {
-    op_fun func;
-    const char *format;
-    const char *args;
-};
-
-/* functions */
-void setstatus(const char *);
-char *smprintf(const char *, ...);
-char *get_battery(const char *);
-char *get_cpu_temperature(const char *);
-char *get_cpu_usage(const char *);
-char *get_datetime(const char *);
-char *get_diskusage(const char *);
-char *get_ram_usage(const char *);
-char *get_volume(const char *);
-char *get_wifi_signal(const char *);
-
-/* include config header */
+/* local headers */
+#include "slstatus.h"
 #include "config.h"
 
 /* set statusbar */
@@ -67,7 +53,7 @@ smprintf(const char *fmt, ...)
 
 /* battery percentage */
 char *
-get_battery(const char *battery)
+battery_perc(const char *battery)
 {
     int now, full, perc;
     char batterynowfile[64] = "";
@@ -117,32 +103,9 @@ get_battery(const char *battery)
     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 *
-get_cpu_usage(const char *null)
+cpu_perc(const char *null)
 {
     int perc;
     long double a[4], b[4];
@@ -184,29 +147,52 @@ get_cpu_usage(const char *null)
 
 /* date and time */
 char *
-get_datetime(const char *timeformat)
+datetime(const char *timeformat)
 {
     time_t tm;
     size_t bufsize = 64;
     char *buf = malloc(bufsize);
+    if (buf == NULL) {
+        fprintf(stderr, "Failed to get date/time");
+        return smprintf("n/a");
+    }
 
     /* get time in format */
     time(&tm);
     setlocale(LC_TIME, "");
     if(!strftime(buf, bufsize, timeformat, localtime(&tm))) {
         setlocale(LC_TIME, "C");
+        free(buf);
         fprintf(stderr, "Strftime failed.\n");
         return smprintf("n/a");
     }
 
     setlocale(LC_TIME, "C");
     /* return time */
-    return smprintf("%s", 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 *
-get_diskusage(const char *mountpoint)
+disk_perc(const char *mountpoint)
 {
     int perc = 0;
     struct statvfs fs;
@@ -218,15 +204,174 @@ get_diskusage(const char *mountpoint)
     }
 
     /* calculate percent */
-    perc = 100 * (1.0f - ((float)fs.f_bavail / (float)fs.f_blocks));
+    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 *
-get_ram_usage(const char *null)
+ram_perc(const char *null)
 {
     int perc;
     long total, free, buffers, cached;
@@ -254,47 +399,218 @@ get_ram_usage(const char *null)
     return smprintf("%d%%", perc);
 }
 
+/* ram total */
+char *
+ram_total(const char *null)
+{
+    long total;
+    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: %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");
+    }
+
+    /* 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);
+
+    /* close meminfo file */
+    fclose(fp);
+
+    /* calculate used */
+    used = total - free - buffers - cached;
+
+    /* return used ram as string */
+    return smprintf("%f", (float)used / 1024 / 1024);
+}
+
+/* custom shell command */
+char *
+run_command(const char* command)
+{
+    int good;
+	FILE *fp;
+	char buffer[64];
+
+    /* try to open the command output */
+	if (!(fp = popen(command, "r"))) {
+        fprintf(stderr, "Could not get command output for: %s.\n", command);
+        return smprintf("n/a");
+    }
+
+    /* get command output text, save it to buffer */
+	fgets(buffer, sizeof(buffer)-1, fp);
+
+    /* close it again */
+	pclose(fp);
+
+    /* add nullchar at the end */
+    for (int i = 0 ; i != sizeof(buffer) ; i++) {
+        if (buffer[i] == '\0') {
+            good = 1;
+            break;
+        }
+    }
+    if (good) {
+        buffer[strlen(buffer) - 1] = '\0';
+    }
+
+    /* return the output */
+	return smprintf("%s", buffer);
+}
+
+/* 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 *
-get_volume(const char *soundcard)
+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;
     snd_mixer_selem_id_t *vol_info, *mute_info;
+
+    /* open everything */
     snd_mixer_open(&handle, 0);
     snd_mixer_attach(handle, soundcard);
     snd_mixer_selem_register(handle, NULL, NULL);
     snd_mixer_load(handle);
+
+    /* prepare everything */
     snd_mixer_selem_id_malloc(&vol_info);
     snd_mixer_selem_id_malloc(&mute_info);
+    /* check */
+    if (vol_info == NULL || mute_info == NULL) {
+        fprintf(stderr, "Could not get alsa volume");
+        return smprintf("n/a");
+    }
     snd_mixer_selem_id_set_name(vol_info, channel);
     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);
+
+    /* get the 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);
-    if (vol_info)
+
+    /* clean up */
+    if (vol_info) {
         snd_mixer_selem_id_free(vol_info);
-    if (mute_info)
+    }
+    if (mute_info) {
         snd_mixer_selem_id_free(mute_info);
-    if (handle)
+    }
+    if (handle) {
         snd_mixer_close(handle);
+    }
 
     /* return the string (mute) */
-    if (!mute)
+    if (!mute) {
         return smprintf("mute");
-    else
+    }
+    else {
         return smprintf("%d%%", (vol * 100) / max);
+    }
 }
 
 /* wifi percentage */
 char *
-get_wifi_signal(const char *wificard)
+wifi_perc(const char *wificard)
 {
     int bufsize = 255;
     int strength;
@@ -352,9 +668,48 @@ get_wifi_signal(const char *wificard)
     return smprintf("%d%%", strength);
 }
 
+/* wifi essid */
+char *
+wifi_essid(const char *wificard)
+{
+    char *id = malloc(IW_ESSID_MAX_SIZE+1);
+    if (id == NULL) {
+        fprintf(stderr, "Cannot get ESSID.");
+        return smprintf("n/a");
+    }
+    int sockfd;
+    struct iwreq wreq;
+
+    /* prepare */
+    memset(&wreq, 0, sizeof(struct iwreq));
+    wreq.u.essid.length = IW_ESSID_MAX_SIZE+1;
+
+    /* set the interface */
+    sprintf(wreq.ifr_name, wificard);
+
+    /* check */
+    if((sockfd = socket(AF_INET, SOCK_DGRAM, 0)) == -1) {
+        fprintf(stderr, "Cannot open socket for interface: %s\n", wificard);
+        return smprintf("n/a");
+    }
+    wreq.u.essid.pointer = id;
+    if (ioctl(sockfd,SIOCGIWESSID, &wreq) == -1) {
+        fprintf(stderr, "Get ESSID ioctl failed for interface %s\n", wificard);
+        return smprintf("n/a");
+    }
+
+    /* return the essid */
+    if (strcmp((char *)wreq.u.essid.pointer, "") == 0) {
+        return smprintf("n/a");
+    }
+    else {
+        return smprintf("%s", (char *)wreq.u.essid.pointer);
+    }
+}
+
 /* main function */
 int
-main()
+main(void)
 {
     char status_string[1024];
     struct arg argument;
@@ -368,14 +723,20 @@ main()
     /* 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) {
             argument = args[i];
             char *res = argument.func(argument.args);
             char *element = smprintf(argument.format, res);
+            if (element == NULL) {
+                element = smprintf("n/a");
+                fprintf(stderr, "Failed to format output.");
+            }
             strcat(status_string, element);
+            free(res);
+            free(element);
         }
 
         /* return the statusbar */