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the code describes itself, there is no need to write stories in /* */

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This commit is contained in:
Ali H. Fardan
2016-08-21 11:10:14 +03:00
parent 1853884520
commit 2e1eb518af
1 changed files with 27 additions and 194 deletions
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221
slstatus.c
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@@ -1,6 +1,5 @@
/* See LICENSE file for copyright and license details. */
/* global libraries */
#include <alsa/asoundlib.h>
#include <arpa/inet.h>
#include <fcntl.h>
@@ -30,7 +29,6 @@
#include "strlcat.h"
#include "strlcpy.h"
/* statusbar configuration type and struct */
typedef char *(*op_fun) (const char *);
struct arg {
op_fun func;
@@ -38,41 +36,37 @@ struct arg {
const char *args;
};
/* function declarations */
void setstatus(const char *str);
char *smprintf(const char *fmt, ...);
char *battery_perc(const char *battery);
char *cpu_perc(const char *null);
char *datetime(const char *timeformat);
char *disk_free(const char *mountpoint);
char *disk_perc(const char *mountpoint);
char *disk_total(const char *mountpoint);
char *disk_used(const char *mountpoint);
char *entropy(const char *null);
char *gid(const char *null);
char *hostname(const char *null);
char *ip(const char *interface);
char *load_avg(const char *null);
char *ram_free(const char *null);
char *ram_perc(const char *null);
char *ram_used(const char *null);
char *ram_total(const char *null);
char *run_command(const char *command);
char *temp(const char *file);
char *uid(const char *null);
char *uptime(const char *null);
char *username(const char *null);
char *vol_perc(const char *soundcard);
char *wifi_perc(const char *wificard);
char *wifi_essid(const char *wificard);
void setstatus(const char *);
char *smprintf(const char *, ...);
char *battery_perc(const char *);
char *cpu_perc(const char *);
char *datetime(const char *);
char *disk_free(const char *);
char *disk_perc(const char *);
char *disk_total(const char *);
char *disk_used(const char *);
char *entropy(const char *);
char *gid(const char *);
char *hostname(const char *);
char *ip(const char *);
char *load_avg(const char *);
char *ram_free(const char *);
char *ram_perc(const char *);
char *ram_used(const char *);
char *ram_total(const char *);
char *run_command(const char *);
char *temp(const char *);
char *uid(const char *);
char *uptime(const char *);
char *username(const char *);
char *vol_perc(const char *);
char *wifi_perc(const char *);
char *wifi_essid(const char *);
/* global variables */
static Display *dpy;
/* configuration header */
#include "config.h"
/* set statusbar */
void
setstatus(const char *str)
{
@@ -81,7 +75,6 @@ setstatus(const char *str)
XSync(dpy, False);
}
/* smprintf function */
char *
smprintf(const char *fmt, ...)
{
@@ -96,7 +89,6 @@ smprintf(const char *fmt, ...)
return ret;
}
/* battery percentage */
char *
battery_perc(const char *battery)
{
@@ -105,50 +97,37 @@ battery_perc(const char *battery)
char batteryfullfile[64] = "";
FILE *fp;
/* generate battery nowfile path */
strlcat(batterynowfile, batterypath, sizeof(batterynowfile));
strlcat(batterynowfile, battery, sizeof(batterynowfile));
strlcat(batterynowfile, "/", sizeof(batterynowfile));
strlcat(batterynowfile, batterynow, sizeof(batterynowfile));
/* generate battery fullfile path */
strlcat(batteryfullfile, batterypath, sizeof(batteryfullfile));
strlcat(batteryfullfile, battery, sizeof(batteryfullfile));
strlcat(batteryfullfile, "/", sizeof(batteryfullfile));
strlcat(batteryfullfile, batteryfull, sizeof(batteryfullfile));
/* open battery now file */
if (!(fp = fopen(batterynowfile, "r"))) {
fprintf(stderr, "Error opening battery file: %s.\n", batterynowfile);
return smprintf(unknowntext);
}
/* read value */
fscanf(fp, "%i", &now);
/* close battery now file */
fclose(fp);
/* open battery full file */
if (!(fp = fopen(batteryfullfile, "r"))) {
fprintf(stderr, "Error opening battery file.\n");
return smprintf(unknowntext);
}
/* read value */
fscanf(fp, "%i", &full);
/* close battery full file */
fclose(fp);
/* calculate percent */
perc = now / (full / 100);
/* return perc as string */
return smprintf("%d%%", perc);
}
/* cpu percentage */
char *
cpu_perc(const char *null)
{
@@ -156,41 +135,28 @@ cpu_perc(const char *null)
long double a[4], b[4];
FILE *fp;
/* open stat file */
if (!(fp = fopen("/proc/stat","r"))) {
fprintf(stderr, "Error opening stat file.\n");
return smprintf(unknowntext);
}
/* read values */
fscanf(fp, "%*s %Lf %Lf %Lf %Lf", &a[0], &a[1], &a[2], &a[3]);
/* close stat file */
fclose(fp);
/* wait a second (for avg values) */
sleep(1);
/* open stat file */
if (!(fp = fopen("/proc/stat","r"))) {
fprintf(stderr, "Error opening stat file.\n");
return smprintf(unknowntext);
}
/* read values */
fscanf(fp, "%*s %Lf %Lf %Lf %Lf", &b[0], &b[1], &b[2], &b[3]);
/* close stat file */
fclose(fp);
/* calculate avg in this second */
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 perc as string */
return smprintf("%d%%", perc);
}
/* date and time */
char *
datetime(const char *timeformat)
{
@@ -202,7 +168,6 @@ datetime(const char *timeformat)
return smprintf(unknowntext);
}
/* get time in format */
time(&tm);
setlocale(LC_TIME, "");
if (!strftime(buf, bufsize, timeformat, localtime(&tm))) {
@@ -213,104 +178,80 @@ datetime(const char *timeformat)
}
setlocale(LC_TIME, "C");
/* return time */
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(unknowntext);
}
/* 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(unknowntext);
}
/* 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(unknowntext);
}
/* 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(unknowntext);
}
/* 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(unknowntext);
}
/* extract entropy */
fscanf(fp, "%d", &entropy);
/* close entropy file */
fclose(fp);
/* return entropy */
return smprintf("%d", entropy);
}
/* gid */
char *
gid(const char *null)
{
@@ -319,37 +260,27 @@ gid(const char *null)
if ((gid = getgid()) < 0) {
fprintf(stderr, "Could no get gid.\n");
return smprintf(unknowntext);
} else {
} else
return smprintf("%d", gid);
}
return smprintf(unknowntext);
}
/* 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(unknowntext);
}
/* 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)
{
@@ -357,7 +288,6 @@ ip(const char *interface)
int s;
char host[NI_MAXHOST];
/* check if getting ip address works */
if (getifaddrs(&ifaddr) == -1) {
fprintf(stderr, "Error getting IP address.\n");
return smprintf(unknowntext);
@@ -385,46 +315,35 @@ ip(const char *interface)
return smprintf(unknowntext);
}
/* load avg */
char *
load_avg(const char *null)
{
double avgs[3];
/* try to get load avg */
if (getloadavg(avgs, 3) < 0) {
fprintf(stderr, "Error getting load avg.\n");
return smprintf(unknowntext);
}
/* return it */
return smprintf("%.2f %.2f %.2f", avgs[0], avgs[1], avgs[2]);
}
/* 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.\n");
return smprintf(unknowntext);
}
/* read the values */
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_perc(const char *null)
{
@@ -432,81 +351,58 @@ ram_perc(const char *null)
long total, free, buffers, cached;
FILE *fp;
/* open meminfo file */
if (!(fp = fopen("/proc/meminfo", "r"))) {
fprintf(stderr, "Error opening meminfo file.\n");
return smprintf(unknowntext);
}
/* 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 percentage */
perc = 100 * ((total - free) - (buffers + cached)) / total;
/* return perc as string */
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.\n");
return smprintf(unknowntext);
}
/* 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.\n");
return smprintf(unknowntext);
}
/* 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)
{
@@ -514,19 +410,13 @@ run_command(const char* command)
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(unknowntext);
}
/* 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;
@@ -535,35 +425,25 @@ run_command(const char* command)
}
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(unknowntext);
}
/* extract temperature */
fscanf(fp, "%d", &temperature);
/* close temperature file */
fclose(fp);
/* return temperature in degrees */
return smprintf("%d°C", temperature / 1000);
}
/* uptime */
char *
uptime(const char *null)
{
@@ -571,27 +451,22 @@ uptime(const char *null)
int hours = 0;
int minutes = 0;
/* get info */
sysinfo(&info);
hours = info.uptime / 3600;
minutes = (info.uptime - hours * 3600 ) / 60;
/* return it */
return smprintf("%dh %dm", hours, minutes);
}
/* 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 {
@@ -602,16 +477,13 @@ username(const char *null)
return smprintf(unknowntext);
}
/* 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 {
@@ -623,7 +495,6 @@ uid(const char *null)
}
/* alsa volume percentage */
char *
vol_perc(const char *soundcard)
{
@@ -633,16 +504,13 @@ vol_perc(const char *soundcard)
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.\n");
return smprintf(unknowntext);
@@ -652,12 +520,10 @@ vol_perc(const char *soundcard)
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);
/* clean up */
if (vol_info)
snd_mixer_selem_id_free(vol_info);
if (mute_info)
@@ -665,14 +531,12 @@ vol_perc(const char *soundcard)
if (handle)
snd_mixer_close(handle);
/* return the string (mute) */
if (!mute)
return smprintf("mute");
else
return smprintf("%d%%", (vol * 100) / max);
}
/* wifi percentage */
char *
wifi_perc(const char *wificard)
{
@@ -685,35 +549,26 @@ wifi_perc(const char *wificard)
char needle[sizeof wificard + 1];
FILE *fp;
/* generate the path name */
memset(path, 0, sizeof path);
strlcat(path, "/sys/class/net/", sizeof(path));
strlcat(path, wificard, sizeof(path));
strlcat(path, "/operstate", sizeof(path));
/* open wifi file */
if(!(fp = fopen(path, "r"))) {
fprintf(stderr, "Error opening wifi operstate file.\n");
return smprintf(unknowntext);
}
/* read the status */
fgets(status, 5, fp);
/* close wifi file */
fclose(fp);
/* check if interface down */
if(strcmp(status, "up\n") != 0)
return smprintf(unknowntext);
/* open wifi file */
if (!(fp = fopen("/proc/net/wireless", "r"))) {
fprintf(stderr, "Error opening wireless file.\n");
return smprintf(unknowntext);
}
/* extract the signal strength */
strlcpy(needle, wificard, sizeof(needle));
strlcat(needle, ":", sizeof(needle));
fgets(buf, bufsize, fp);
@@ -724,14 +579,10 @@ wifi_perc(const char *wificard)
sscanf(datastart + 1, " %*d %d %*d %*d %*d %*d %*d %*d %*d %*d", &strength);
}
/* close wifi file */
fclose(fp);
/* return strength in percent */
return smprintf("%d%%", strength);
}
/* wifi essid */
char *
wifi_essid(const char *wificard)
{
@@ -739,14 +590,9 @@ wifi_essid(const char *wificard)
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(unknowntext);
@@ -757,32 +603,25 @@ wifi_essid(const char *wificard)
return smprintf(unknowntext);
}
/* return the essid */
if (strcmp((char *)wreq.u.essid.pointer, "") == 0)
return smprintf(unknowntext);
else
return smprintf("%s", (char *)wreq.u.essid.pointer);
}
/* main function */
int
main(void)
{
char status_string[1024];
struct arg argument;
/* try to open display */
if (!(dpy = XOpenDisplay(0x0))) {
fprintf(stderr, "Cannot open display!\n");
exit(1);
}
/* return status every interval */
for (;;) {
/* 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);
@@ -796,16 +635,10 @@ main(void)
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 */
XCloseDisplay(dpy);
/* exit successfully */
return 0;
}