/* See LICENSE file for copyright and license details. */
#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 "strlcat.h"
#include "strlcpy.h"
-typedef char *(*op_fun)();
struct arg {
- op_fun func;
+ char *(*func)();
const char *format;
const char *args;
};
-static void setstatus(const char *);
static char *smprintf(const char *, ...);
static char *battery_perc(const char *);
static char *cpu_perc(void);
#include "config.h"
-static void
-setstatus(const char *str)
-{
- /* set WM_NAME via X11 */
- XStoreName(dpy, DefaultRootWindow(dpy), str);
- XSync(dpy, False);
-}
-
static char *
smprintf(const char *fmt, ...)
{
va_list ap;
- char tmp[120];
- char *ret = NULL;
+ char *ret;
+ int len;
va_start(ap, fmt);
- vsnprintf(tmp, sizeof(tmp)-1, fmt, ap);
- tmp[strlen(tmp)+1] = '\0';
+ len = vsnprintf(NULL, 0, fmt, ap);
+ va_end(ap);
- if (asprintf(&ret, "%s", tmp) < 0)
- return NULL;
+ ret = malloc(++len);
+ if (ret == NULL) {
+ perror("malloc");
+ exit(1);
+ }
+ va_start(ap, fmt);
+ vsnprintf(ret, len, fmt, ap);
va_end(ap);
+
return ret;
}
strlcat(batteryfullfile, "/", sizeof(batteryfullfile));
strlcat(batteryfullfile, BATTERY_FULL, sizeof(batteryfullfile));
- if (!(fp = fopen(batterynowfile, "r"))) {
- fprintf(stderr, "Error opening battery file: %s.\n", batterynowfile);
+ fp = fopen(batterynowfile, "r");
+ if (fp == NULL ) {
+ fprintf(stderr, "Error opening battery file: %s: %s\n",
+ batterynowfile,
+ strerror(errno));
return smprintf(UNKNOWN_STR);
}
fscanf(fp, "%i", &now);
fclose(fp);
- if (!(fp = fopen(batteryfullfile, "r"))) {
- fprintf(stderr, "Error opening battery file.\n");
+ fp = fopen(batteryfullfile, "r");
+ if (fp == NULL) {
+ fprintf(stderr, "Error opening battery file: %s\n",
+ strerror(errno));
return smprintf(UNKNOWN_STR);
}
{
int perc;
long double a[4], b[4];
- FILE *fp;
+ FILE *fp = fopen("/proc/stat","r");
- if (!(fp = fopen("/proc/stat","r"))) {
- fprintf(stderr, "Error opening stat file.\n");
+ if (fp == NULL) {
+ fprintf(stderr, "Error opening stat file: %s\n",
+ strerror(errno));
return smprintf(UNKNOWN_STR);
}
fscanf(fp, "%*s %Lf %Lf %Lf %Lf", &a[0], &a[1], &a[2], &a[3]);
fclose(fp);
- /* wait a second (for avg values) */
sleep(1);
- if (!(fp = fopen("/proc/stat","r"))) {
- fprintf(stderr, "Error opening stat file.\n");
+ fp = fopen("/proc/stat","r");
+ if (fp == NULL) {
+ fprintf(stderr, "Error opening stat file: %s\n",
+ strerror(errno));
return smprintf(UNKNOWN_STR);
}
struct statvfs fs;
if (statvfs(mountpoint, &fs) < 0) {
- fprintf(stderr, "Could not get filesystem info.\n");
+ fprintf(stderr, "Could not get filesystem info: %s\n",
+ strerror(errno));
return smprintf(UNKNOWN_STR);
}
return smprintf("%f", (float)fs.f_bsize * (float)fs.f_bfree / 1024 / 1024 / 1024);
struct statvfs fs;
if (statvfs(mountpoint, &fs) < 0) {
- fprintf(stderr, "Could not get filesystem info.\n");
+ fprintf(stderr, "Could not get filesystem info: %s\n",
+ strerror(errno));
return smprintf(UNKNOWN_STR);
}
struct statvfs fs;
if (statvfs(mountpoint, &fs) < 0) {
- fprintf(stderr, "Could not get filesystem info.\n");
+ fprintf(stderr, "Could not get filesystem info: %s\n",
+ strerror(errno));
return smprintf(UNKNOWN_STR);
}
struct statvfs fs;
if (statvfs(mountpoint, &fs) < 0) {
- fprintf(stderr, "Could not get filesystem info.\n");
+ fprintf(stderr, "Could not get filesystem info: %s\n",
+ strerror(errno));
return smprintf(UNKNOWN_STR);
}
entropy(void)
{
int entropy = 0;
- FILE *fp;
+ FILE *fp = fopen("/proc/sys/kernel/random/entropy_avail", "r");
- if (!(fp = fopen("/proc/sys/kernel/random/entropy_avail", "r"))) {
- fprintf(stderr, "Could not open entropy file.\n");
+ if (fp == NULL) {
+ fprintf(stderr, "Could not open entropy file: %s\n",
+ strerror(errno));
return smprintf(UNKNOWN_STR);
}
static char *
gid(void)
{
- gid_t gid = getgid();
- return smprintf("%d", gid);
+ return smprintf("%d", getgid());
}
static char *
hostname(void)
{
char hostname[HOST_NAME_MAX];
- FILE *fp;
+ FILE *fp = fopen("/proc/sys/kernel/hostname", "r");
- if (!(fp = fopen("/proc/sys/kernel/hostname", "r"))) {
- fprintf(stderr, "Could not open hostname file.\n");
+ if (fp == NULL) {
+ fprintf(stderr, "Could not open hostname file: %s\n",
+ strerror(errno));
return smprintf(UNKNOWN_STR);
}
- fscanf(fp, "%s\n", hostname);
+ fgets(hostname, sizeof(hostname), fp);
+ /* FIXME: needs improvement */
+ memset(&hostname[strlen(hostname)-1], '\0',
+ sizeof(hostname) - strlen(hostname));
fclose(fp);
return smprintf("%s", hostname);
}
char host[NI_MAXHOST];
if (getifaddrs(&ifaddr) == -1) {
- fprintf(stderr, "Error getting IP address.\n");
+ fprintf(stderr, "Error getting IP address: %s\n",
+ strerror(errno));
return smprintf(UNKNOWN_STR);
}
if (ifa->ifa_addr == NULL)
continue;
- s = getnameinfo(ifa->ifa_addr, sizeof(struct sockaddr_in), host, NI_MAXHOST, NULL, 0, NI_NUMERICHOST);
+ 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) {
ram_free(void)
{
long free;
- FILE *fp;
+ FILE *fp = fopen("/proc/meminfo", "r");
- if (!(fp = fopen("/proc/meminfo", "r"))) {
- fprintf(stderr, "Error opening meminfo file.\n");
+ if (fp == NULL) {
+ fprintf(stderr, "Error opening meminfo file: %s\n",
+ strerror(errno));
return smprintf(UNKNOWN_STR);
}
{
int perc;
long total, free, buffers, cached;
- FILE *fp;
+ FILE *fp = fopen("/proc/meminfo", "r");
- if (!(fp = fopen("/proc/meminfo", "r"))) {
- fprintf(stderr, "Error opening meminfo file.\n");
+ if (fp == NULL) {
+ fprintf(stderr, "Error opening meminfo file: %s\n",
+ strerror(errno));
return smprintf(UNKNOWN_STR);
}
ram_total(void)
{
long total;
- FILE *fp;
+ FILE *fp = fopen("/proc/meminfo", "r");
- if (!(fp = fopen("/proc/meminfo", "r"))) {
- fprintf(stderr, "Error opening meminfo file.\n");
+ if (fp == NULL) {
+ fprintf(stderr, "Error opening meminfo file: %s\n",
+ strerror(errno));
return smprintf(UNKNOWN_STR);
}
ram_used(void)
{
long free, total, buffers, cached, used;
- FILE *fp;
+ FILE *fp = fopen("/proc/meminfo", "r");
- if (!(fp = fopen("/proc/meminfo", "r"))) {
- fprintf(stderr, "Error opening meminfo file.\n");
+ if (fp == NULL) {
+ fprintf(stderr, "Error opening meminfo file: %s\n",
+ strerror(errno));
return smprintf(UNKNOWN_STR);
}
run_command(const char* command)
{
int good;
- FILE *fp;
+ FILE *fp = popen(command, "r");
char buffer[64];
- if (!(fp = popen(command, "r"))) {
- fprintf(stderr, "Could not get command output for: %s.\n", command);
+ if (fp == NULL) {
+ fprintf(stderr, "Could not get command output for: %s: %s\n",
+ command, strerror(errno));
return smprintf(UNKNOWN_STR);
}
- fgets(buffer, sizeof(buffer) - 1, fp);
+ fgets(buffer, sizeof(buffer)-1, fp);
pclose(fp);
for (int i = 0 ; i != sizeof(buffer); i++) {
if (buffer[i] == '\0') {
}
}
if (good)
- buffer[strlen(buffer) - 1] = '\0';
+ buffer[strlen(buffer)-1] = '\0';
return smprintf("%s", buffer);
}
temp(const char *file)
{
int temperature;
- FILE *fp;
+ FILE *fp = fopen(file, "r");
- if (!(fp = fopen(file, "r"))) {
- fprintf(stderr, "Could not open temperature file.\n");
+ if (fp == NULL) {
+ fprintf(stderr, "Could not open temperature file: %s\n",
+ strerror(errno));
return smprintf(UNKNOWN_STR);
}
static char *
username(void)
{
- register struct passwd *pw;
- register uid_t uid;
-
- uid = geteuid();
- pw = getpwuid(uid);
+ uid_t uid = geteuid();
+ struct passwd *pw = getpwuid(uid);
- if (pw)
+ if (pw == NULL)
return smprintf("%s", pw->pw_name);
- else {
- fprintf(stderr, "Could not get username.\n");
- return smprintf(UNKNOWN_STR);
- }
+ fprintf(stderr, "Could not get username: %s\n",
+ strerror(errno));
return smprintf(UNKNOWN_STR);
}
static char *
uid(void)
{
- register uid_t uid;
-
- uid = geteuid();
-
- if (uid)
- return smprintf("%d", uid);
- else {
- fprintf(stderr, "Could not get uid.\n");
- return smprintf(UNKNOWN_STR);
- }
-
- return smprintf(UNKNOWN_STR);
+ return smprintf("%d", geteuid());
}
-static char *
-vol_perc(const char *soundcard)
-{
- int mute = 0;
- long vol = 0, max = 0, min = 0;
+static char *
+vol_perc(const char *snd_card)
+{ /* thanks to botika for this function */
+ long int vol, max, min;
snd_mixer_t *handle;
- snd_mixer_elem_t *pcm_mixer, *mas_mixer;
- snd_mixer_selem_id_t *vol_info, *mute_info;
+ snd_mixer_elem_t *elem;
+ snd_mixer_selem_id_t *s_elem;
snd_mixer_open(&handle, 0);
- snd_mixer_attach(handle, soundcard);
+ snd_mixer_attach(handle, snd_card);
snd_mixer_selem_register(handle, NULL, NULL);
snd_mixer_load(handle);
+ snd_mixer_selem_id_malloc(&s_elem);
+ snd_mixer_selem_id_set_name(s_elem, "Master");
+ elem = snd_mixer_find_selem(handle, s_elem);
- snd_mixer_selem_id_malloc(&vol_info);
- snd_mixer_selem_id_malloc(&mute_info);
- if (vol_info == NULL || mute_info == NULL) {
- fprintf(stderr, "Could not get alsa volume.\n");
+ if (elem == NULL) {
+ snd_mixer_selem_id_free(s_elem);
+ snd_mixer_close(handle);
+ perror("alsa error: ");
return smprintf(UNKNOWN_STR);
}
- snd_mixer_selem_id_set_name(vol_info, ALSA_CHANNEL);
- snd_mixer_selem_id_set_name(mute_info, ALSA_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);
-
- if (vol_info)
- snd_mixer_selem_id_free(vol_info);
- if (mute_info)
- snd_mixer_selem_id_free(mute_info);
- if (handle)
- snd_mixer_close(handle);
- if (!mute)
- return smprintf("mute");
- else
- return smprintf("%d%%", (vol * 100) / max);
+ snd_mixer_handle_events(handle);
+ snd_mixer_selem_get_playback_volume_range(elem, &min, &max);
+ snd_mixer_selem_get_playback_volume(elem, 0, &vol);
+
+ snd_mixer_selem_id_free(s_elem);
+ snd_mixer_close(handle);
+
+ return smprintf("%d", (vol * 100) / max);
}
static char *
wifi_perc(const char *wificard)
{
- int bufsize = 255;
int strength;
- char buf[bufsize];
+ char buf[255];
char *datastart;
char path[64];
char status[5];
- char needle[sizeof wificard + 1];
+ char needle[strlen(wificard)+2];
FILE *fp;
- memset(path, 0, sizeof path);
- strlcat(path, "/sys/class/net/", sizeof(path));
+ strlcpy(path, "/sys/class/net/", sizeof(path));
strlcat(path, wificard, sizeof(path));
strlcat(path, "/operstate", sizeof(path));
- if(!(fp = fopen(path, "r"))) {
- fprintf(stderr, "Error opening wifi operstate file.\n");
+ fp = fopen(path, "r");
+
+ if(fp == NULL) {
+ fprintf(stderr, "Error opening wifi operstate file: %s\n",
+ strerror(errno));
return smprintf(UNKNOWN_STR);
}
if(strcmp(status, "up\n") != 0)
return smprintf(UNKNOWN_STR);
- if (!(fp = fopen("/proc/net/wireless", "r"))) {
- fprintf(stderr, "Error opening wireless file.\n");
+ fp = fopen("/proc/net/wireless", "r");
+ if (fp == NULL) {
+ fprintf(stderr, "Error opening wireless file: %s\n",
+ strerror(errno));
return smprintf(UNKNOWN_STR);
}
strlcpy(needle, wificard, sizeof(needle));
strlcat(needle, ":", sizeof(needle));
- fgets(buf, bufsize, fp);
- fgets(buf, bufsize, fp);
- fgets(buf, bufsize, fp);
- if ((datastart = strstr(buf, needle)) != NULL) {
+ fgets(buf, sizeof(buf), fp);
+ fgets(buf, sizeof(buf), fp);
+ fgets(buf, sizeof(buf), fp);
+
+ datastart = strstr(buf, needle);
+ if (datastart != NULL) {
datastart = strstr(buf, ":");
sscanf(datastart + 1, " %*d %d %*d %*d %*d %*d %*d %*d %*d %*d", &strength);
}
wifi_essid(const char *wificard)
{
char id[IW_ESSID_MAX_SIZE+1];
- int sockfd;
+ int sockfd = socket(AF_INET, SOCK_DGRAM, 0);
struct iwreq wreq;
memset(&wreq, 0, sizeof(struct iwreq));
wreq.u.essid.length = IW_ESSID_MAX_SIZE+1;
sprintf(wreq.ifr_name, wificard);
- if((sockfd = socket(AF_INET, SOCK_DGRAM, 0)) == -1) {
- fprintf(stderr, "Cannot open socket for interface: %s\n", wificard);
+ if(sockfd == -1) {
+ fprintf(stderr, "Cannot open socket for interface: %s: %s\n",
+ wificard, strerror(errno));
return smprintf(UNKNOWN_STR);
}
wreq.u.essid.pointer = id;
if (ioctl(sockfd,SIOCGIWESSID, &wreq) == -1) {
- fprintf(stderr, "Get ESSID ioctl failed for interface %s\n", wificard);
+ fprintf(stderr, "Get ESSID ioctl failed for interface %s: %s\n",
+ wificard, strerror(errno));
return smprintf(UNKNOWN_STR);
}
char *res, *element;
struct arg argument;
- if (!(dpy = XOpenDisplay(0x0))) {
- fprintf(stderr, "Cannot open display!\n");
- exit(1);
- }
-
- for (;;) {
- memset(status_string, 0, sizeof(status_string));
- for (i = 0; i < sizeof(args) / sizeof(args[0]); ++i) {
- argument = args[i];
- if (argument.args == NULL)
- res = argument.func();
- else
- res = argument.func(argument.args);
- element = smprintf(argument.format, res);
- if (element == NULL) {
- element = smprintf(UNKNOWN_STR);
- fprintf(stderr, "Failed to format output.\n");
- }
- strlcat(status_string, element, sizeof(status_string));
- free(res);
- free(element);
+ stderr = stderr;
+ dpy = XOpenDisplay(NULL);
+
+ memset(status_string, 0, sizeof(status_string));
+ for (i = 0; i < sizeof(args) / sizeof(args[0]); ++i) {
+ argument = args[i];
+ if (argument.args == NULL)
+ res = argument.func();
+ else
+ res = argument.func(argument.args);
+ element = smprintf(argument.format, res);
+ if (element == NULL) {
+ element = smprintf(UNKNOWN_STR);
+ fprintf(stderr, "Failed to format output.\n");
}
-
- setstatus(status_string);
- sleep(UPDATE_INTERVAL -1);
+ strlcat(status_string, element, sizeof(status_string));
+ free(res);
+ free(element);
}
+ XStoreName(dpy, DefaultRootWindow(dpy), status_string);
+ XSync(dpy, False);
XCloseDisplay(dpy);
+
return 0;
}