X-Git-Url: https://git.xinqibao.xyz/slstatus.git/blobdiff_plain/8286bd8a374910d24f925e9f38931cd5dbfb22d1..6f011743921db04e5513df45c5ac4b2c752d52de:/slstatus.c?ds=inline diff --git a/slstatus.c b/slstatus.c index 331a345..47bd4c9 100644 --- a/slstatus.c +++ b/slstatus.c @@ -1,365 +1,926 @@ /* See LICENSE file for copyright and license details. */ -/* global libraries */ -#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include #include #include #include #include +#include +#include +#include +#include +#include +#include +#include +#include #include #include #include -/* local libraries */ +#include "arg.h" + +#define LEN(x) (sizeof (x) / sizeof *(x)) + +struct arg { + const char *(*func)(); + const char *fmt; + const char *args; +}; + +static const char *bprintf(const char *fmt, ...); +static const char *battery_perc(const char *bat); +static const char *battery_power(const char *bat); +static const char *battery_state(const char *bat); +static const char *cpu_freq(void); +static const char *cpu_perc(void); +static const char *datetime(const char *fmt); +static const char *disk_free(const char *mnt); +static const char *disk_perc(const char *mnt); +static const char *disk_total(const char *mnt); +static const char *disk_used(const char *mnt); +static const char *entropy(void); +static const char *gid(void); +static const char *hostname(void); +static const char *ip(const char *iface); +static const char *kernel_release(void); +static const char *keyboard_indicators(void); +static const char *load_avg(void); +static const char *num_files(const char *dir); +static const char *ram_free(void); +static const char *ram_perc(void); +static const char *ram_used(void); +static const char *ram_total(void); +static const char *run_command(const char *cmd); +static const char *swap_free(void); +static const char *swap_perc(void); +static const char *swap_used(void); +static const char *swap_total(void); +static const char *temp(const char *file); +static const char *uid(void); +static const char *uptime(void); +static const char *username(void); +static const char *vol_perc(const char *card); +static const char *wifi_perc(const char *iface); +static const char *wifi_essid(const char *iface); +static void sighandler(const int signo); +static void usage(void); + +char *argv0; +static unsigned short int delay = 0; +static unsigned short int done; +static Display *dpy; + #include "config.h" -/* functions */ -void setstatus(char *str); -char *get_battery(); -char *get_cpu_temperature(); -char *get_cpu_usage(); -char *get_datetime(); -char *get_ram_usage(); -char *smprintf(char *fmt, ...); -char *get_volume(); -char *get_wifi_signal(); - -/* global variables */ -static Display *dpy; +static char buf[MAXLEN]; + +static const char * +bprintf(const char *fmt, ...) +{ + va_list ap; + size_t len; + + va_start(ap, fmt); + len = vsnprintf(buf, sizeof(buf) - 1, fmt, ap); + va_end(ap); + + if (len >= sizeof(buf)) + buf[sizeof(buf)-1] = '\0'; + + return buf; +} + +static const char * +battery_perc(const char *bat) +{ + int n, perc; + char path[PATH_MAX]; + FILE *fp; + + snprintf(path, sizeof(path), "%s%s%s", "/sys/class/power_supply/", bat, "/capacity"); + fp = fopen(path, "r"); + if (fp == NULL) { + warn("Failed to open file %s", path); + return UNKNOWN_STR; + } + n = fscanf(fp, "%i", &perc); + fclose(fp); + if (n != 1) + return UNKNOWN_STR; + + return bprintf("%d", perc); +} + +static const char * +battery_power(const char *bat) +{ + char path[PATH_MAX]; + FILE *fp; + int n, watts; + + snprintf(path, sizeof(path), "%s%s%s", "/sys/class/power_supply/", bat, "/power_now"); + fp = fopen(path, "r"); + if (fp == NULL) { + warn("Failed to open file %s", path); + return UNKNOWN_STR; + } + n = fscanf(fp, "%i", &watts); + fclose(fp); + if (n != 1) + return UNKNOWN_STR; + + return bprintf("%d", (watts + 500000) / 1000000); +} -/* set statusbar (WM_NAME) */ -void -setstatus(char *str) +static const char * +battery_state(const char *bat) { - XStoreName(dpy, DefaultRootWindow(dpy), str); - XSync(dpy, False); + FILE *fp; + struct { + char *state; + char *symbol; + } map[] = { + { "Charging", "+" }, + { "Discharging", "-" }, + { "Full", "=" }, + { "Unknown", "/" }, + }; + size_t i; + int n; + char path[PATH_MAX], state[12]; + + snprintf(path, sizeof(path), "%s%s%s", "/sys/class/power_supply/", bat, "/status"); + fp = fopen(path, "r"); + if (fp == NULL) { + warn("Failed to open file %s", path); + return UNKNOWN_STR; + } + n = fscanf(fp, "%12s", state); + fclose(fp); + if (n != 1) + return UNKNOWN_STR; + + for (i = 0; i < LEN(map); i++) { + if (!strcmp(map[i].state, state)) { + break; + } + } + + return (i == LEN(map)) ? "?" : map[i].symbol; +} + +static const char * +cpu_freq(void) +{ + int n, freq; + FILE *fp; + + fp = fopen("/sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq", "r"); + if (fp == NULL) { + warn("Failed to open file /sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq"); + return UNKNOWN_STR; + } + n = fscanf(fp, "%i", &freq); + fclose(fp); + if (n != 1) + return UNKNOWN_STR; + + return bprintf("%d", (freq + 500) / 1000); +} + +static const char * +cpu_perc(void) +{ + int n, perc; + long double a[4], b[4]; + FILE *fp; + + fp = fopen("/proc/stat", "r"); + if (fp == NULL) { + warn("Failed to open file /proc/stat"); + return UNKNOWN_STR; + } + n = fscanf(fp, "%*s %Lf %Lf %Lf %Lf", &a[0], &a[1], &a[2], &a[3]); + fclose(fp); + if (n != 4) + return UNKNOWN_STR; + + delay++; + sleep(delay); + + fp = fopen("/proc/stat", "r"); + if (fp == NULL) { + warn("Failed to open file /proc/stat"); + return UNKNOWN_STR; + } + n = fscanf(fp, "%*s %Lf %Lf %Lf %Lf", &b[0], &b[1], &b[2], &b[3]); + fclose(fp); + if (n != 4) + return UNKNOWN_STR; + + 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 bprintf("%d", perc); +} + +static const char * +datetime(const char *fmt) +{ + time_t t; + + t = time(NULL); + if (strftime(buf, sizeof(buf), fmt, localtime(&t)) == 0) + return UNKNOWN_STR; + + return buf; } -/* battery percentage */ -char * -get_battery() +static const char * +disk_free(const char *mnt) { - int battery_now, battery_full, battery_perc; - FILE *fp; + struct statvfs fs; - /* open battery now file */ - if (!(fp = fopen(batterynowfile, "r"))) { - fprintf(stderr, "Error opening battery file."); - exit(1); - } + if (statvfs(mnt, &fs) < 0) { + warn("Failed to get filesystem info"); + return UNKNOWN_STR; + } - /* read value */ - fscanf(fp, "%i", &battery_now); + return bprintf("%f", (float)fs.f_bsize * (float)fs.f_bfree / 1024 / 1024 / 1024); +} - /* close battery now file */ - fclose(fp); +static const char * +disk_perc(const char *mnt) +{ + int perc; + struct statvfs fs; - /* open battery full file */ - if (!(fp = fopen(batteryfullfile, "r"))) { - fprintf(stderr, "Error opening battery file."); - exit(1); - } + if (statvfs(mnt, &fs) < 0) { + warn("Failed to get filesystem info"); + return UNKNOWN_STR; + } - /* read value */ - fscanf(fp, "%i", &battery_full); + perc = 100 * (1.0f - ((float)fs.f_bfree / (float)fs.f_blocks)); - /* close battery full file */ - fclose(fp); + return bprintf("%d", perc); +} - /* calculate percent */ - battery_perc = battery_now / (battery_full / 100); +static const char * +disk_total(const char *mnt) +{ + struct statvfs fs; - /* return batt_perc as string */ - return smprintf("%d%%", battery_perc); + if (statvfs(mnt, &fs) < 0) { + warn("Failed to get filesystem info"); + return UNKNOWN_STR; + } + + return bprintf("%f", (float)fs.f_bsize * (float)fs.f_blocks / 1024 / 1024 / 1024); } -/* cpu temperature */ -char * -get_cpu_temperature() +static const char * +disk_used(const char *mnt) { - int temperature; - FILE *fp; + struct statvfs fs; - /* open temperature file */ - if (!(fp = fopen(tempfile, "r"))) { - fprintf(stderr, "Could not open temperature file.\n"); - exit(1); - } + if (statvfs(mnt, &fs) < 0) { + warn("Failed to get filesystem info"); + return UNKNOWN_STR; + } - /* extract temperature */ - fscanf(fp, "%d", &temperature); + return bprintf("%f", (float)fs.f_bsize * ((float)fs.f_blocks - (float)fs.f_bfree) / 1024 / 1024 / 1024); +} - /* close temperature file */ - fclose(fp); +static const char * +entropy(void) +{ + int n, num; + FILE *fp; + + fp= fopen("/proc/sys/kernel/random/entropy_avail", "r"); + if (fp == NULL) { + warn("Failed to open file /proc/sys/kernel/random/entropy_avail"); + return UNKNOWN_STR; + } + n = fscanf(fp, "%d", &num); + fclose(fp); + if (n != 1) + return UNKNOWN_STR; + + return bprintf("%d", num); +} - /* return temperature in degrees */ - return smprintf("%d°C", temperature / 1000); +static const char * +gid(void) +{ + return bprintf("%d", getgid()); } -/* cpu percentage */ -char * -get_cpu_usage() +static const char * +hostname(void) { - int cpu_perc; - long double a[4], b[4]; - FILE *fp; + if (gethostname(buf, sizeof(buf)) == -1) { + warn("hostname"); + return UNKNOWN_STR; + } - /* open stat file */ - if (!(fp = fopen("/proc/stat","r"))) { - fprintf(stderr, "Error opening stat file."); - exit(1); - } + return buf; +} - /* read values */ - fscanf(fp, "%*s %Lf %Lf %Lf %Lf", &a[0], &a[1], &a[2], &a[3]); +static const char * +ip(const char *iface) +{ + struct ifaddrs *ifaddr, *ifa; + int s; + char host[NI_MAXHOST]; + + if (getifaddrs(&ifaddr) == -1) { + warn("Failed to get IP address for interface %s", iface); + return UNKNOWN_STR; + } + + 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, iface) == 0) && (ifa->ifa_addr->sa_family == AF_INET)) { + if (s != 0) { + warnx("Failed to get IP address for interface %s", iface); + return UNKNOWN_STR; + } + return bprintf("%s", host); + } + } + + freeifaddrs(ifaddr); + + return UNKNOWN_STR; +} - /* close stat file */ - fclose(fp); +static const char * +kernel_release(void) +{ + struct utsname udata; - /* wait a second (for avg values) */ - sleep(1); + if (uname(&udata) < 0) { + return UNKNOWN_STR; + } - /* open stat file */ - if (!(fp = fopen("/proc/stat","r"))) { - fprintf(stderr, "Error opening stat file."); - exit(1); - } + return bprintf("%s", udata.release); +} - /* read values */ - fscanf(fp, "%*s %Lf %Lf %Lf %Lf", &b[0], &b[1], &b[2], &b[3]); +static const char * +keyboard_indicators(void) +{ + XKeyboardState state; + + XGetKeyboardControl(dpy, &state); + + switch (state.led_mask) { + case 1: + return "c"; + case 2: + return "n"; + case 3: + return "cn"; + default: + return ""; + } +} - /* close stat file */ - fclose(fp); +static const char * +load_avg(void) +{ + double avgs[3]; - /* 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])); + if (getloadavg(avgs, 3) < 0) { + warnx("Failed to get the load avg"); + return UNKNOWN_STR; + } - /* return cpu_perc as string */ - return smprintf("%d%%", cpu_perc); + return bprintf("%.2f %.2f %.2f", avgs[0], avgs[1], avgs[2]); } -/* date and time */ -char * -get_datetime() +static const char * +num_files(const char *dir) { - time_t tm; - size_t bufsize = 19; - char *buf = malloc(bufsize); + struct dirent *dp; + DIR *fd; + int num = 0; - /* get time in format */ - time(&tm); - if(!strftime(buf, bufsize, timeformat, localtime(&tm))) { - fprintf(stderr, "Strftime failed.\n"); - exit(1); - } + if ((fd = opendir(dir)) == NULL) { + warn("Failed to get number of files in directory %s", dir); + return UNKNOWN_STR; + } - /* return time */ - return buf; + while ((dp = readdir(fd)) != NULL) { + if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, "..")) + continue; /* skip self and parent */ + num++; + } + + closedir(fd); + + return bprintf("%d", num); } -/* ram percentage */ -char * -get_ram_usage() +static const char * +ram_free(void) { - int ram_perc; - long total, free, buffers, cached; - FILE *fp; + long free; + FILE *fp; + int n; + + fp = fopen("/proc/meminfo", "r"); + if (fp == NULL) { + warn("Failed to open file /proc/meminfo"); + return UNKNOWN_STR; + } + n = fscanf(fp, "MemFree: %ld kB\n", &free); + fclose(fp); + if (n != 1) + return UNKNOWN_STR; + + return bprintf("%f", (float)free / 1024 / 1024); +} + +static const char * +ram_perc(void) +{ + long total, free, buffers, cached; + FILE *fp; + + fp = fopen("/proc/meminfo", "r"); + if (fp == NULL) { + warn("Failed to open file /proc/meminfo"); + return UNKNOWN_STR; + } + if (fscanf(fp, "MemTotal: %ld kB\n", &total) != 1 || + fscanf(fp, "MemFree: %ld kB\n", &free) != 1 || + fscanf(fp, "MemAvailable: %ld kB\nBuffers: %ld kB\n", + &buffers, &buffers) != 2 || + fscanf(fp, "Cached: %ld kB\n", &cached) != 1) + goto scanerr; + fclose(fp); + + return bprintf("%d", 100 * ((total - free) - (buffers + cached)) / total); + +scanerr: + fclose(fp); + return UNKNOWN_STR; +} + +static const char * +ram_total(void) +{ + long total; + FILE *fp; + int n; + + fp = fopen("/proc/meminfo", "r"); + if (fp == NULL) { + warn("Failed to open file /proc/meminfo"); + return UNKNOWN_STR; + } + n = fscanf(fp, "MemTotal: %ld kB\n", &total); + fclose(fp); + if (n != 1) + return UNKNOWN_STR; + + return bprintf("%f", (float)total / 1024 / 1024); +} + +static const char * +ram_used(void) +{ + long free, total, buffers, cached; + FILE *fp; + + fp = fopen("/proc/meminfo", "r"); + if (fp == NULL) { + warn("Failed to open file /proc/meminfo"); + return UNKNOWN_STR; + } + if (fscanf(fp, "MemTotal: %ld kB\n", &total) != 1 || + fscanf(fp, "MemFree: %ld kB\n", &free) != 1 || + fscanf(fp, "MemAvailable: %ld kB\nBuffers: %ld kB\n", + &buffers, &buffers) != 2 || + fscanf(fp, "Cached: %ld kB\n", &cached) != 1) + goto scanerr; + fclose(fp); + + return bprintf("%f", (float)(total - free - buffers - cached) / 1024 / 1024); + +scanerr: + fclose(fp); + return UNKNOWN_STR; +} + +static const char * +run_command(const char *cmd) +{ + char *p; + FILE *fp; + + fp = popen(cmd, "r"); + if (fp == NULL) { + warn("Failed to get command output for %s", cmd); + return UNKNOWN_STR; + } + p = fgets(buf, sizeof(buf) - 1, fp); + pclose(fp); + if (!p) + return UNKNOWN_STR; + if ((p = strrchr(buf, '\n')) != NULL) + p[0] = '\0'; + + return buf[0] ? buf : UNKNOWN_STR; +} + +static const char * +swap_free(void) +{ + long total, free; + FILE *fp; + size_t bytes_read; + char *match; + + fp = fopen("/proc/meminfo", "r"); + if (fp == NULL) { + warn("Failed to open file /proc/meminfo"); + return UNKNOWN_STR; + } + + if ((bytes_read = fread(buf, sizeof(char), sizeof(buf) - 1, fp)) == 0) { + warn("swap_free: read error"); + fclose(fp); + return UNKNOWN_STR; + } + fclose(fp); + + if ((match = strstr(buf, "SwapTotal")) == NULL) + return UNKNOWN_STR; + sscanf(match, "SwapTotal: %ld kB\n", &total); + + if ((match = strstr(buf, "SwapFree")) == NULL) + return UNKNOWN_STR; + sscanf(match, "SwapFree: %ld kB\n", &free); + + return bprintf("%f", (float)free / 1024 / 1024); +} + +static const char * +swap_perc(void) +{ + long total, free, cached; + FILE *fp; + size_t bytes_read; + char *match; + + fp = fopen("/proc/meminfo", "r"); + if (fp == NULL) { + warn("Failed to open file /proc/meminfo"); + return UNKNOWN_STR; + } + + if ((bytes_read = fread(buf, sizeof(char), sizeof(buf) - 1, fp)) == 0) { + warn("swap_perc: read error"); + fclose(fp); + return UNKNOWN_STR; + } + fclose(fp); + + if ((match = strstr(buf, "SwapTotal")) == NULL) + return UNKNOWN_STR; + sscanf(match, "SwapTotal: %ld kB\n", &total); + + if ((match = strstr(buf, "SwapCached")) == NULL) + return UNKNOWN_STR; + sscanf(match, "SwapCached: %ld kB\n", &cached); + + if ((match = strstr(buf, "SwapFree")) == NULL) + return UNKNOWN_STR; + sscanf(match, "SwapFree: %ld kB\n", &free); + + return bprintf("%d", 100 * (total - free - cached) / total); +} + +static const char * +swap_total(void) +{ + long total; + FILE *fp; + size_t bytes_read; + char *match; + + fp = fopen("/proc/meminfo", "r"); + if (fp == NULL) { + warn("Failed to open file /proc/meminfo"); + return UNKNOWN_STR; + } + if ((bytes_read = fread(buf, sizeof(char), sizeof(buf) - 1, fp)) == 0) { + warn("swap_total: read error"); + fclose(fp); + return UNKNOWN_STR; + } + fclose(fp); + + if ((match = strstr(buf, "SwapTotal")) == NULL) + return UNKNOWN_STR; + sscanf(match, "SwapTotal: %ld kB\n", &total); + + return bprintf("%f", (float)total / 1024 / 1024); +} + +static const char * +swap_used(void) +{ + long total, free, cached; + FILE *fp; + size_t bytes_read; + char *match; + + fp = fopen("/proc/meminfo", "r"); + if (fp == NULL) { + warn("Failed to open file /proc/meminfo"); + return UNKNOWN_STR; + } + if ((bytes_read = fread(buf, sizeof(char), sizeof(buf) - 1, fp)) == 0) { + warn("swap_used: read error"); + fclose(fp); + return UNKNOWN_STR; + } + fclose(fp); + + if ((match = strstr(buf, "SwapTotal")) == NULL) + return UNKNOWN_STR; + sscanf(match, "SwapTotal: %ld kB\n", &total); + + if ((match = strstr(buf, "SwapCached")) == NULL) + return UNKNOWN_STR; + sscanf(match, "SwapCached: %ld kB\n", &cached); + + if ((match = strstr(buf, "SwapFree")) == NULL) + return UNKNOWN_STR; + sscanf(match, "SwapFree: %ld kB\n", &free); + + return bprintf("%f", (float)(total - free - cached) / 1024 / 1024); +} + +static const char * +temp(const char *file) +{ + int n, temp; + FILE *fp; + + fp = fopen(file, "r"); + if (fp == NULL) { + warn("Failed to open file %s", file); + return UNKNOWN_STR; + } + n = fscanf(fp, "%d", &temp); + fclose(fp); + if (n != 1) + return UNKNOWN_STR; + + return bprintf("%d", temp / 1000); +} + +static const char * +uptime(void) +{ + struct sysinfo info; + int h = 0; + int m = 0; + + sysinfo(&info); + h = info.uptime / 3600; + m = (info.uptime - h * 3600 ) / 60; + + return bprintf("%dh %dm", h, m); +} + +static const char * +username(void) +{ + struct passwd *pw = getpwuid(geteuid()); + + if (pw == NULL) { + warn("Failed to get username"); + return UNKNOWN_STR; + } + + return bprintf("%s", pw->pw_name); +} + +static const char * +uid(void) +{ + return bprintf("%d", geteuid()); +} + + +static const char * +vol_perc(const char *card) +{ + unsigned int i; + int v, afd, devmask; + char *vnames[] = SOUND_DEVICE_NAMES; + + afd = open(card, O_RDONLY | O_NONBLOCK); + if (afd == -1) { + warn("Cannot open %s", card); + return UNKNOWN_STR; + } + + if (ioctl(afd, SOUND_MIXER_READ_DEVMASK, &devmask) == -1) { + warn("Cannot get volume for %s", card); + close(afd); + return UNKNOWN_STR; + } + for (i = 0; i < LEN(vnames); i++) { + if (devmask & (1 << i) && !strcmp("vol", vnames[i])) { + if (ioctl(afd, MIXER_READ(i), &v) == -1) { + warn("vol_perc: ioctl"); + close(afd); + return UNKNOWN_STR; + } + } + } + + close(afd); + + return bprintf("%d", v & 0xff); +} + +static const char * +wifi_perc(const char *iface) +{ + int i, perc; + char *p, *datastart; + char path[PATH_MAX]; + char status[5]; + FILE *fp; + + snprintf(path, sizeof(path), "%s%s%s", "/sys/class/net/", iface, "/operstate"); + fp = fopen(path, "r"); + if (fp == NULL) { + warn("Failed to open file %s", path); + return UNKNOWN_STR; + } + p = fgets(status, 5, fp); + fclose(fp); + if(!p || strcmp(status, "up\n") != 0) { + return UNKNOWN_STR; + } + + fp = fopen("/proc/net/wireless", "r"); + if (fp == NULL) { + warn("Failed to open file /proc/net/wireless"); + return UNKNOWN_STR; + } + + for (i = 0; i < 3; i++) { + if (!(p = fgets(buf, sizeof(buf) - 1, fp))) + break; + } + fclose(fp); + if (i < 2 || !p) + return UNKNOWN_STR; + + if ((datastart = strstr(buf, iface)) == NULL) + return UNKNOWN_STR; + + datastart = (datastart+(strlen(iface)+1)); + sscanf(datastart + 1, " %*d %d %*d %*d %*d %*d %*d %*d %*d %*d", &perc); + + return bprintf("%d", perc); +} + +static const char * +wifi_essid(const char *iface) +{ + static char id[IW_ESSID_MAX_SIZE+1]; + 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; + snprintf(wreq.ifr_name, sizeof(wreq.ifr_name), "%s", iface); + + if (sockfd == -1) { + warn("Failed to get ESSID for interface %s", iface); + return UNKNOWN_STR; + } + wreq.u.essid.pointer = id; + if (ioctl(sockfd,SIOCGIWESSID, &wreq) == -1) { + warn("Failed to get ESSID for interface %s", iface); + return UNKNOWN_STR; + } + + close(sockfd); + + if (strcmp(id, "") == 0) + return UNKNOWN_STR; + else + return id; +} + +static void +sighandler(const int signo) +{ + if (signo == SIGTERM || signo == SIGINT) { + done = 1; + } +} + +static void +usage(void) +{ + fprintf(stderr, "usage: %s [-s]\n", argv0); + exit(1); +} - /* open meminfo file */ - if (!(fp = fopen("/proc/meminfo", "r"))) { - fprintf(stderr, "Error opening meminfo file."); - exit(1); - } - - /* 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 */ - ram_perc = 100 * ((total - free) - (buffers + cached)) / total; - - /* return ram_perc as string */ - return smprintf("%d%%",ram_perc); -} - -/* smprintf function */ -char * -smprintf(char *fmt, ...) -{ - va_list fmtargs; - char *ret; - int len; - - va_start(fmtargs, fmt); - len = vsnprintf(NULL, 0, fmt, fmtargs); - va_end(fmtargs); - - ret = malloc(++len); - if (ret == NULL) { - fprintf(stderr, "Malloc error."); - exit(1); - } - - va_start(fmtargs, fmt); - vsnprintf(ret, len, fmt, fmtargs); - va_end(fmtargs); - - return ret; -} - -/* alsa volume percentage */ -char * -get_volume() -{ - 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; - snd_mixer_open(&handle, 0); - snd_mixer_attach(handle, soundcard); - snd_mixer_selem_register(handle, NULL, NULL); - snd_mixer_load(handle); - snd_mixer_selem_id_malloc(&vol_info); - snd_mixer_selem_id_malloc(&mute_info); - 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); - 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); - - /* return the string (mute) */ - if (!mute) - return smprintf("mute"); - else - return smprintf("%d%%", (vol * 100) / max); -} - -/* wifi percentage */ -char * -get_wifi_signal() -{ - 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 status[5]; - char needle[sizeof wificard + 1]; - FILE *fp; - - /* generate the path name */ - - memset(path, 0, sizeof path); - strcat(path, path_start); - strcat(path, wificard); - strcat(path, path_end); - - /* open wifi file */ - if(!(fp = fopen(path, "r"))) { - fprintf(stderr, "Error opening wifi operstate file."); - exit(1); - } - - /* read the status */ - fgets(status, 5, fp); - - /* close wifi file */ - fclose(fp); - - /* check if interface down */ - if(strcmp(status, "up\n") != 0){ - return "n/a"; - } - - /* open wifi file */ - if (!(fp = fopen("/proc/net/wireless", "r"))) { - fprintf(stderr, "Error opening wireless file."); - exit(1); - } - - /* 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, needle)) != NULL) { - datastart = strstr(buf, ":"); - 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); -} - -/* main function */ int -main() -{ - char status[1024]; - char *wifi_signal = NULL; - char *battery = NULL; - char *cpu_usage = NULL; - char *cpu_temperature = NULL; - char *ram_usage = NULL; - char *volume = NULL; - char *datetime = NULL; - - /* open display */ - if (!(dpy = XOpenDisplay(0x0))) { - fprintf(stderr, "Cannot open display!\n"); - exit(1); - } - - /* return status every second */ - for (;;) { - /* assign the values */ - wifi_signal = get_wifi_signal(); - battery = get_battery(); - cpu_usage = get_cpu_usage(); - cpu_temperature = get_cpu_temperature(); - ram_usage = get_ram_usage(); - volume = get_volume(); - datetime = get_datetime(); - - /* return the status */ - sprintf(status, FORMATSTRING, ARGUMENTS); - setstatus(status); - - /* free the values */ - free(wifi_signal); - free(battery); - free(cpu_usage); - free(cpu_temperature); - free(ram_usage); - free(volume); - free(datetime); - } - - /* close display */ - XCloseDisplay(dpy); - - /* exit successfully */ - return 0; +main(int argc, char *argv[]) +{ + struct arg argument; + struct sigaction act; + size_t i, len; + int sflag = 0; + char status_string[MAXLEN]; + char *element; + + ARGBEGIN { + case 's': + sflag = 1; + break; + default: + usage(); + } ARGEND + + if (argc) { + usage(); + } + + memset(&act, 0, sizeof(act)); + act.sa_handler = sighandler; + sigaction(SIGINT, &act, 0); + sigaction(SIGTERM, &act, 0); + + if (!sflag) { + dpy = XOpenDisplay(NULL); + if (!dpy) { + fprintf(stderr, "slstatus: cannot open display"); + exit(1); + } + } + + setlocale(LC_ALL, ""); + + while (!done) { + status_string[0] = '\0'; + + for (element = status_string, i = len = 0; i < LEN(args); + ++i, element += len) { + argument = args[i]; + len = snprintf(element, sizeof(status_string)-1 - len, + argument.fmt, + argument.func(argument.args)); + if (len >= sizeof(status_string)) { + status_string[sizeof(status_string)-1] = '\0'; + break; + } + } + + if (sflag) { + printf("%s\n", status_string); + } else { + XStoreName(dpy, DefaultRootWindow(dpy), status_string); + XSync(dpy, False); + } + + if ((UPDATE_INTERVAL - delay) <= 0) { + delay = 0; + continue; + } else { + sleep(UPDATE_INTERVAL - delay); + delay = 0; + } + } + + if (!sflag) { + XStoreName(dpy, DefaultRootWindow(dpy), NULL); + XCloseDisplay(dpy); + } + + return 0; }