X-Git-Url: https://git.xinqibao.xyz/slstatus.git/blobdiff_plain/9078fb351dc3d1e2eac261ec185acef1f66180bc..4d33c360141952f6071d19c34c0395ad2ff668a1:/slstatus.c diff --git a/slstatus.c b/slstatus.c index 4b69cc6..b31f21d 100644 --- a/slstatus.c +++ b/slstatus.c @@ -1,699 +1,924 @@ /* 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 #include #include -/* local headers */ -#include "slstatus.h" +#include "arg.h" + +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 unsigned short int oflag, nflag; +static Display *dpy; + #include "config.h" -/* set statusbar */ -void -setstatus(const char *str) -{ - /* set WM_NAME via X11 */ - XStoreName(dpy, DefaultRootWindow(dpy), str); - XSync(dpy, False); -} +static char buf[MAXLEN]; -/* smprintf function */ -char * -smprintf(const char *fmt, ...) +static const char * +bprintf(const char *fmt, ...) { - va_list fmtargs; - char *ret = NULL; + va_list ap; + size_t len; + + va_start(ap, fmt); + len = vsnprintf(buf, sizeof(buf) - 1, fmt, ap); + va_end(ap); - va_start(fmtargs, fmt); - if (vasprintf(&ret, fmt, fmtargs) < 0) - return NULL; - va_end(fmtargs); + if (len >= sizeof(buf)) + buf[sizeof(buf)-1] = '\0'; - return ret; + return buf; } -/* battery percentage */ -char * -battery_perc(const char *battery) +static const char * +battery_perc(const char *bat) { - 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.%s",batterynowfile); - return smprintf("n/a"); - } + int n, perc; + char path[PATH_MAX]; + FILE *fp; - /* read value */ - fscanf(fp, "%i", &now); + 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); +} - /* close battery now file */ - fclose(fp); +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); +} - /* open battery full file */ - if (!(fp = fopen(batteryfullfile, "r"))) { - fprintf(stderr, "Error opening battery file."); - return smprintf("n/a"); - } +static const char * +battery_state(const char *bat) +{ + char path[PATH_MAX]; + char state[12]; + FILE *fp; + int n; + + 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; + + if (strcmp(state, "Charging") == 0) { + return "+"; + } else if (strcmp(state, "Discharging") == 0) { + return "-"; + } else if (strcmp(state, "Full") == 0) { + return "="; + } else if (strcmp(state, "Unknown") == 0) { + return "/"; + } else { + return "?"; + } +} - /* read value */ - fscanf(fp, "%i", &full); +static const char * +cpu_freq(void) +{ + int n, freq; + FILE *fp; - /* close battery full file */ - fclose(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); +} - /* calculate percent */ - perc = now / (full / 100); +static const char * +cpu_perc(void) +{ + int n, perc; + long double a[4], b[4]; + FILE *fp; - /* return perc as string */ - return smprintf("%d%%", perc); + 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); } -/* cpu percentage */ -char * -cpu_perc(const char *null) +static const char * +datetime(const char *fmt) { - int perc; - long double a[4], b[4]; - FILE *fp; + time_t t; - /* open stat file */ - if (!(fp = fopen("/proc/stat","r"))) { - fprintf(stderr, "Error opening stat file."); - return smprintf("n/a"); - } + t = time(NULL); + if (strftime(buf, sizeof(buf), fmt, localtime(&t)) == 0) + return UNKNOWN_STR; - /* read values */ - fscanf(fp, "%*s %Lf %Lf %Lf %Lf", &a[0], &a[1], &a[2], &a[3]); + return buf; +} - /* close stat file */ - fclose(fp); +static const char * +disk_free(const char *mnt) +{ + struct statvfs fs; - /* wait a second (for avg values) */ - sleep(1); + if (statvfs(mnt, &fs) < 0) { + warn("Failed to get filesystem info"); + return UNKNOWN_STR; + } - /* open stat file */ - if (!(fp = fopen("/proc/stat","r"))) { - fprintf(stderr, "Error opening stat file."); - return smprintf("n/a"); - } + return bprintf("%f", (float)fs.f_bsize * (float)fs.f_bfree / 1024 / 1024 / 1024); +} - /* read values */ - fscanf(fp, "%*s %Lf %Lf %Lf %Lf", &b[0], &b[1], &b[2], &b[3]); +static const char * +disk_perc(const char *mnt) +{ + int perc; + struct statvfs fs; - /* close stat file */ - fclose(fp); + if (statvfs(mnt, &fs) < 0) { + warn("Failed to get filesystem info"); + return UNKNOWN_STR; + } - /* 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])); + perc = 100 * (1.0f - ((float)fs.f_bfree / (float)fs.f_blocks)); - /* return perc as string */ - return smprintf("%d%%", perc); + return bprintf("%d", perc); } -/* date and time */ -char * -datetime(const char *timeformat) +static const char * +disk_total(const char *mnt) { - 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"); - } + struct statvfs fs; - /* 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"); - return smprintf("n/a"); - } + if (statvfs(mnt, &fs) < 0) { + warn("Failed to get filesystem info"); + return UNKNOWN_STR; + } - setlocale(LC_TIME, "C"); - /* return time */ - char *ret = smprintf("%s", buf); - free(buf); - return ret; + return bprintf("%f", (float)fs.f_bsize * (float)fs.f_blocks / 1024 / 1024 / 1024); } -/* disk free */ -char * -disk_free(const char *mountpoint) +static const char * +disk_used(const char *mnt) { - struct statvfs fs; + struct statvfs fs; - /* try to open mountpoint */ - if (statvfs(mountpoint, &fs) < 0) { - fprintf(stderr, "Could not get filesystem info.\n"); - return smprintf("n/a"); - } + if (statvfs(mnt, &fs) < 0) { + warn("Failed to get filesystem info"); + return UNKNOWN_STR; + } - /* return free */ - return smprintf("%f", (float)fs.f_bsize * (float)fs.f_bfree / 1024 / 1024 / 1024); + return bprintf("%f", (float)fs.f_bsize * ((float)fs.f_blocks - (float)fs.f_bfree) / 1024 / 1024 / 1024); } -/* disk usage percentage */ -char * -disk_perc(const char *mountpoint) +static const char * +entropy(void) { - 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)); + int n, num; + FILE *fp; - /* return perc */ - return smprintf("%d%%", perc); + 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); } -/* disk total */ -char * -disk_total(const char *mountpoint) +static const char * +gid(void) { - 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); + return bprintf("%d", getgid()); } -/* disk used */ -char * -disk_used(const char *mountpoint) +static const char * +hostname(void) { - struct statvfs fs; + if (gethostname(buf, sizeof(buf)) == -1) { + warn("hostname"); + return UNKNOWN_STR; + } - /* 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); + return buf; } -/* entropy available */ -char * -entropy(const char *null) +static const char * +ip(const char *iface) { - int entropy = 0; - FILE *fp; + 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; +} - /* 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"); - } +static const char * +kernel_release(void) +{ + struct utsname udata; - /* extract entropy */ - fscanf(fp, "%d", &entropy); + if (uname(&udata) < 0) { + return UNKNOWN_STR; + } - /* close entropy file */ - fclose(fp); + return bprintf("%s", udata.release); +} - /* return entropy */ - return smprintf("%d", entropy); +static const char * +keyboard_indicators(void) +{ + Display *dpy = XOpenDisplay(NULL); + XKeyboardState state; + XGetKeyboardControl(dpy, &state); + XCloseDisplay(dpy); + + switch (state.led_mask) { + case 1: + return "c"; + case 2: + return "n"; + case 3: + return "cn"; + default: + return ""; + } } -/* gid */ -char * -gid(const char *null) +static const char * +load_avg(void) { - gid_t gid; + double avgs[3]; - if ((gid = getgid()) < 0) { - fprintf(stderr, "Could no get gid."); - return smprintf("n/a"); - } else { - return smprintf("%d", gid); - } + if (getloadavg(avgs, 3) < 0) { + warnx("Failed to get the load avg"); + return UNKNOWN_STR; + } - return smprintf("n/a"); + return bprintf("%.2f %.2f %.2f", avgs[0], avgs[1], avgs[2]); } -/* hostname */ -char * -hostname(const char *null) +static const char * +num_files(const char *dir) { - char hostname[HOST_NAME_MAX]; - FILE *fp; + struct dirent *dp; + DIR *fd; + int num = 0; - /* open hostname file */ - if (!(fp = fopen("/proc/sys/kernel/hostname", "r"))) { - fprintf(stderr, "Could not open hostname file.\n"); - return smprintf("n/a"); - } + if ((fd = opendir(dir)) == NULL) { + warn("Failed to get number of files in directory %s", dir); + return UNKNOWN_STR; + } - /* extract hostname */ - fscanf(fp, "%s\n", hostname); + while ((dp = readdir(fd)) != NULL) { + if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, "..")) + continue; /* skip self and parent */ + num++; + } - /* close hostname file */ - fclose(fp); + closedir(fd); - /* return entropy */ - return smprintf("%s", hostname); + return bprintf("%d", num); } -/* ip address */ -char * -ip(const char *interface) +static const char * +ram_free(void) { - 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); + 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); +} - 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); - } - } +static const char * +ram_perc(void) +{ + long total, free, buffers, cached; + FILE *fp; - /* free the address */ - freeifaddrs(ifaddr); + 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; +} - /* return n/a if nothing works */ - return smprintf("n/a"); +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); } -/* ram free */ -char * -ram_free(const char *null) +static const char * +ram_used(void) { - long free; - FILE *fp; + long free, total, buffers, cached; + FILE *fp; - /* open meminfo file */ - if (!(fp = fopen("/proc/meminfo", "r"))) { - fprintf(stderr, "Error opening meminfo file."); - return smprintf("n/a"); - } + 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; +} - /* read the values */ - fscanf(fp, "MemTotal: %*d kB\n"); - fscanf(fp, "MemFree: %ld kB\n", &free); +static const char * +run_command(const char *cmd) +{ + char *p; + FILE *fp; - /* close meminfo file */ - fclose(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 free ram as string */ - return smprintf("%f", (float)free / 1024 / 1024); + return buf[0] ? buf : UNKNOWN_STR; } -/* ram percentage */ -char * -ram_perc(const char *null) +static const char * +swap_free(void) { - int perc; - long total, free, buffers, cached; - 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); + 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); +} - /* close meminfo file */ - fclose(fp); +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); +} - /* calculate percentage */ - perc = 100 * ((total - free) - (buffers + 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); +} - /* return perc as string */ - return smprintf("%d%%", perc); +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); } -/* ram total */ -char * -ram_total(const char *null) +static const char * +temp(const char *file) { - long total; - FILE *fp; + int n, temp; + FILE *fp; - /* open meminfo file */ - if (!(fp = fopen("/proc/meminfo", "r"))) { - fprintf(stderr, "Error opening meminfo file."); - return smprintf("n/a"); - } + 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); +} - /* read the values */ - fscanf(fp, "MemTotal: %ld kB\n", &total); +static const char * +uptime(void) +{ + struct sysinfo info; + int h = 0; + int m = 0; - /* close meminfo file */ - fclose(fp); + sysinfo(&info); + h = info.uptime / 3600; + m = (info.uptime - h * 3600 ) / 60; - /* return total ram as string */ - return smprintf("%f", (float)total / 1024 / 1024); + return bprintf("%dh %dm", h, m); } -/* ram used */ -char * -ram_used(const char *null) +static const char * +username(void) { - long free, total, buffers, cached, used; - FILE *fp; + struct passwd *pw = getpwuid(geteuid()); - /* open meminfo file */ - if (!(fp = fopen("/proc/meminfo", "r"))) { - fprintf(stderr, "Error opening meminfo file."); - return smprintf("n/a"); - } + if (pw == NULL) { + warn("Failed to get username"); + return UNKNOWN_STR; + } - /* 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 bprintf("%s", pw->pw_name); +} - /* close meminfo file */ - fclose(fp); +static const char * +uid(void) +{ + return bprintf("%d", geteuid()); +} - /* calculate used */ - used = total - free - buffers - cached; - /* return used ram as string */ - return smprintf("%f", (float)used / 1024 / 1024); +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 < (sizeof(vnames) / sizeof((vnames[0]))); 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); } -/* custom shell command */ -char * -run_command(const char* command) +static const char * +wifi_perc(const char *iface) { + int i, perc; + char *p, *datastart; + char path[PATH_MAX]; + char status[5]; 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); + 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); +} - /* add nullchar at the end */ - buffer[strlen(buffer) - 1] = '\0'; +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; +} - /* return the output */ - return smprintf("%s", buffer); +static void +sighandler(const int signo) +{ + if (signo == SIGTERM || signo == SIGINT) { + done = 1; + } } -/* temperature */ -char * -temp(const char *file) +static void +usage(void) { - 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 * -vol_perc(const char *soundcard) -{ - int mute = 0; - long vol = 0, max = 0, min = 0; - 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); - - /* clean up */ - 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 * -wifi_perc(const char *wificard) -{ - int bufsize = 255; - int strength; - char buf[bufsize]; - char *datastart; - char path[64]; - char status[5]; - char needle[sizeof wificard + 1]; - FILE *fp; - - /* generate the path name */ - memset(path, 0, sizeof path); - strcat(path, "/sys/class/net/"); - strcat(path, wificard); - strcat(path, "/operstate"); - - /* open wifi file */ - if(!(fp = fopen(path, "r"))) { - fprintf(stderr, "Error opening wifi operstate file."); - return smprintf("n/a"); - } - - /* read the status */ - fgets(status, 5, fp); - - /* close wifi file */ - fclose(fp); - - /* check if interface down */ - if(strcmp(status, "up\n") != 0){ - return smprintf("n/a"); - } - - /* open wifi file */ - if (!(fp = fopen("/proc/net/wireless", "r"))) { - fprintf(stderr, "Error opening wireless file."); - 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, 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 */ + fprintf(stderr, "usage: %s [-o | -n]\n", argv0); + exit(1); +} + int -main() -{ - 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); - 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 */ - XCloseDisplay(dpy); - - /* exit successfully */ - return 0; +main(int argc, char *argv[]) +{ + unsigned short int i; + char status_string[MAXLEN]; + char *element; + struct arg argument; + struct sigaction act; + size_t len; + + ARGBEGIN { + case 'o': + oflag = 1; + break; + case 'n': + nflag = 1; + break; + default: + usage(); + } ARGEND + + if (oflag && nflag) { + usage(); + } + + memset(&act, 0, sizeof(act)); + act.sa_handler = sighandler; + sigaction(SIGINT, &act, 0); + sigaction(SIGTERM, &act, 0); + + if (!oflag) { + dpy = XOpenDisplay(NULL); + } + + setlocale(LC_ALL, ""); + + while (!done) { + status_string[0] = '\0'; + + for (element = status_string, i = len = 0; + i < sizeof(args) / sizeof(args[0]); + ++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 (oflag) { + printf("%s\n", status_string); + } else if (nflag) { + printf("%s\n", status_string); + done = 1; + } 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 (!oflag) { + XStoreName(dpy, DefaultRootWindow(dpy), NULL); + XCloseDisplay(dpy); + } + + return 0; }