X-Git-Url: https://git.xinqibao.xyz/slstatus.git/blobdiff_plain/f9f72a06f11de9ecd1b14811eba63c6e8c7a1165..779f611208ea8ee7475df7729451f33104e1369a:/slstatus.c?ds=sidebyside diff --git a/slstatus.c b/slstatus.c index 5c7659c..f47cd9f 100644 --- a/slstatus.c +++ b/slstatus.c @@ -1,7 +1,7 @@ /* See LICENSE file for copyright and license details. */ -#include -#include +#include +#include #include #include #include @@ -9,6 +9,7 @@ #include #include #include +#include #include #include #include @@ -17,627 +18,915 @@ #include #include #include +#include #include #include +#include #include #include #include -#undef strlcat -#undef strlcpy +#include "arg.h" -#include "strlcat.h" -#include "strlcpy.h" +#define LEN(x) (sizeof (x) / sizeof *(x)) -typedef char *(*op_fun)(); struct arg { - op_fun func; - const char *format; + const char *(*func)(); + const char *fmt; const char *args; }; -static void setstatus(const char *); -static char *smprintf(const char *, ...); -static char *battery_perc(const char *); -static char *cpu_perc(void); -static char *datetime(const char *); -static char *disk_free(const char *); -static char *disk_perc(const char *); -static char *disk_total(const char *); -static char *disk_used(const char *); -static char *entropy(void); -static char *gid(void); -static char *hostname(void); -static char *ip(const char *); -static char *load_avg(void); -static char *ram_free(void); -static char *ram_perc(void); -static char *ram_used(void); -static char *ram_total(void); -static char *run_command(const char *); -static char *temp(const char *); -static char *uid(void); -static char *uptime(void); -static char *username(void); -static char *vol_perc(const char *); -static char *wifi_perc(const char *); -static char *wifi_essid(const char *); - +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" -static void -setstatus(const char *str) +static char buf[MAXLEN]; + +static const char * +bprintf(const char *fmt, ...) { - /* set WM_NAME via X11 */ - XStoreName(dpy, DefaultRootWindow(dpy), str); - XSync(dpy, False); + 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 char * -smprintf(const char *fmt, ...) +static const char * +battery_perc(const char *bat) { - va_list fmtargs; - char *ret = NULL; + int n, perc; + char path[PATH_MAX]; + FILE *fp; - va_start(fmtargs, fmt); - if (vasprintf(&ret, fmt, fmtargs) < 0) - return NULL; - va_end(fmtargs); + 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 ret; + return bprintf("%d", perc); } -static char * -battery_perc(const char *battery) +static const char * +battery_power(const char *bat) { - int now, full, perc; - char batterynowfile[64] = ""; - char batteryfullfile[64] = ""; + 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; - strlcat(batterynowfile, batterypath, sizeof(batterynowfile)); - strlcat(batterynowfile, battery, sizeof(batterynowfile)); - strlcat(batterynowfile, "/", sizeof(batterynowfile)); - strlcat(batterynowfile, batterynow, sizeof(batterynowfile)); + return bprintf("%d", (watts + 500000) / 1000000); +} - strlcat(batteryfullfile, batterypath, sizeof(batteryfullfile)); - strlcat(batteryfullfile, battery, sizeof(batteryfullfile)); - strlcat(batteryfullfile, "/", sizeof(batteryfullfile)); - strlcat(batteryfullfile, batteryfull, sizeof(batteryfullfile)); +static const char * +battery_state(const char *bat) +{ + FILE *fp; + struct { + char *state; + char *symbol; + } map[] = { + { "Charging", "+" }, + { "Discharging", "-" }, + { "Full", "=" }, + { "Unknown", "/" }, + }; + size_t i; + int n; + char path[PATH_MAX], state[12]; - if (!(fp = fopen(batterynowfile, "r"))) { - fprintf(stderr, "Error opening battery file: %s.\n", batterynowfile); - return smprintf(unknowntext); + 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; } - - fscanf(fp, "%i", &now); + n = fscanf(fp, "%12s", state); fclose(fp); + if (n != 1) + return unknown_str; - if (!(fp = fopen(batteryfullfile, "r"))) { - fprintf(stderr, "Error opening battery file.\n"); - return smprintf(unknowntext); + for (i = 0; i < LEN(map); i++) { + if (!strcmp(map[i].state, state)) { + break; + } } - fscanf(fp, "%i", &full); - fclose(fp); + return (i == LEN(map)) ? "?" : map[i].symbol; +} - perc = now / (full / 100); +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 smprintf("%d%%", perc); + return bprintf("%d", (freq + 500) / 1000); } -static char * +static const char * cpu_perc(void) { - int perc; + int n, perc; long double a[4], b[4]; FILE *fp; - if (!(fp = fopen("/proc/stat","r"))) { - fprintf(stderr, "Error opening stat file.\n"); - return smprintf(unknowntext); + fp = fopen("/proc/stat", "r"); + if (fp == NULL) { + warn("Failed to open file /proc/stat"); + return unknown_str; } - - fscanf(fp, "%*s %Lf %Lf %Lf %Lf", &a[0], &a[1], &a[2], &a[3]); + n = fscanf(fp, "%*s %Lf %Lf %Lf %Lf", &a[0], &a[1], &a[2], &a[3]); fclose(fp); + if (n != 4) + return unknown_str; - /* wait a second (for avg values) */ - sleep(1); + delay++; + sleep(delay); - if (!(fp = fopen("/proc/stat","r"))) { - fprintf(stderr, "Error opening stat file.\n"); - return smprintf(unknowntext); + fp = fopen("/proc/stat", "r"); + if (fp == NULL) { + warn("Failed to open file /proc/stat"); + return unknown_str; } - - fscanf(fp, "%*s %Lf %Lf %Lf %Lf", &b[0], &b[1], &b[2], &b[3]); + 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 smprintf("%d%%", perc); + return bprintf("%d", perc); } -static char * -datetime(const char *timeformat) +static const char * +datetime(const char *fmt) { - time_t tm; - size_t bufsize = 64; - char *buf = malloc(bufsize); - if (buf == NULL) { - fprintf(stderr, "Failed to get date/time.\n"); - return smprintf(unknowntext); - } + time_t t; - 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(unknowntext); - } + t = time(NULL); + if (strftime(buf, sizeof(buf), fmt, localtime(&t)) == 0) + return unknown_str; - setlocale(LC_TIME, "C"); - char *ret = smprintf("%s", buf); - free(buf); - return ret; + return buf; } -static char * -disk_free(const char *mountpoint) +static const char * +disk_free(const char *mnt) { struct statvfs fs; - if (statvfs(mountpoint, &fs) < 0) { - fprintf(stderr, "Could not get filesystem info.\n"); - return smprintf(unknowntext); + if (statvfs(mnt, &fs) < 0) { + warn("Failed to get filesystem info"); + return unknown_str; } - return smprintf("%f", (float)fs.f_bsize * (float)fs.f_bfree / 1024 / 1024 / 1024); + + return bprintf("%f", (float)fs.f_bsize * (float)fs.f_bfree / 1024 / 1024 / 1024); } -static char * -disk_perc(const char *mountpoint) +static const char * +disk_perc(const char *mnt) { - int perc = 0; + int perc; struct statvfs fs; - if (statvfs(mountpoint, &fs) < 0) { - fprintf(stderr, "Could not get filesystem info.\n"); - return smprintf(unknowntext); + if (statvfs(mnt, &fs) < 0) { + warn("Failed to get filesystem info"); + return unknown_str; } perc = 100 * (1.0f - ((float)fs.f_bfree / (float)fs.f_blocks)); - return smprintf("%d%%", perc); + + return bprintf("%d", perc); } -static char * -disk_total(const char *mountpoint) +static const char * +disk_total(const char *mnt) { struct statvfs fs; - if (statvfs(mountpoint, &fs) < 0) { - fprintf(stderr, "Could not get filesystem info.\n"); - return smprintf(unknowntext); + if (statvfs(mnt, &fs) < 0) { + warn("Failed to get filesystem info"); + return unknown_str; } - return smprintf("%f", (float)fs.f_bsize * (float)fs.f_blocks / 1024 / 1024 / 1024); + return bprintf("%f", (float)fs.f_bsize * (float)fs.f_blocks / 1024 / 1024 / 1024); } -static char * -disk_used(const char *mountpoint) +static const char * +disk_used(const char *mnt) { struct statvfs fs; - if (statvfs(mountpoint, &fs) < 0) { - fprintf(stderr, "Could not get filesystem info.\n"); - return smprintf(unknowntext); + if (statvfs(mnt, &fs) < 0) { + warn("Failed to get filesystem info"); + return unknown_str; } - return smprintf("%f", (float)fs.f_bsize * ((float)fs.f_blocks - (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); } -static char * +static const char * entropy(void) { - int entropy = 0; + int n, num; FILE *fp; - if (!(fp = fopen("/proc/sys/kernel/random/entropy_avail", "r"))) { - fprintf(stderr, "Could not open entropy file.\n"); - return smprintf(unknowntext); + 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; } - - fscanf(fp, "%d", &entropy); + n = fscanf(fp, "%d", &num); fclose(fp); - return smprintf("%d", entropy); + if (n != 1) + return unknown_str; + + return bprintf("%d", num); } -static char * +static const char * gid(void) { - gid_t gid = getgid(); - return smprintf("%d", gid); + return bprintf("%d", getgid()); } -static char * +static const char * hostname(void) { - char hostname[HOST_NAME_MAX]; - FILE *fp; - - if (!(fp = fopen("/proc/sys/kernel/hostname", "r"))) { - fprintf(stderr, "Could not open hostname file.\n"); - return smprintf(unknowntext); + if (gethostname(buf, sizeof(buf)) == -1) { + warn("hostname"); + return unknown_str; } - fscanf(fp, "%s\n", hostname); - fclose(fp); - return smprintf("%s", hostname); + return buf; } -static char * -ip(const char *interface) +static const char * +ip(const char *iface) { struct ifaddrs *ifaddr, *ifa; int s; char host[NI_MAXHOST]; if (getifaddrs(&ifaddr) == -1) { - fprintf(stderr, "Error getting IP address.\n"); - return smprintf(unknowntext); + warn("Failed to get IP address for interface %s", iface); + return unknown_str; } - /* get the ip address */ for (ifa = ifaddr; ifa != NULL; ifa = ifa->ifa_next) { - if (ifa->ifa_addr == NULL) + 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 ((strcmp(ifa->ifa_name, iface) == 0) && (ifa->ifa_addr->sa_family == AF_INET)) { if (s != 0) { - fprintf(stderr, "Error getting IP address.\n"); - return smprintf(unknowntext); + warnx("Failed to get IP address for interface %s", iface); + return unknown_str; } - return smprintf("%s", host); + return bprintf("%s", host); } } - /* free the address */ freeifaddrs(ifaddr); - return smprintf(unknowntext); + return unknown_str; } -static char * +static const char * +kernel_release(void) +{ + struct utsname udata; + + if (uname(&udata) < 0) { + return unknown_str; + } + + return bprintf("%s", udata.release); +} + +static const char * +keyboard_indicators(void) +{ + Display *dpy = XOpenDisplay(NULL); + XKeyboardState state; + + if (dpy == NULL) { + warnx("XOpenDisplay failed"); + return unknown_str; + } + XGetKeyboardControl(dpy, &state); + XCloseDisplay(dpy); + + switch (state.led_mask) { + case 1: + return "c"; + case 2: + return "n"; + case 3: + return "cn"; + default: + return ""; + } +} + +static const char * load_avg(void) { double avgs[3]; if (getloadavg(avgs, 3) < 0) { - fprintf(stderr, "Error getting load avg.\n"); - return smprintf(unknowntext); + warnx("Failed to get the load avg"); + return unknown_str; } - return smprintf("%.2f %.2f %.2f", avgs[0], avgs[1], avgs[2]); + return bprintf("%.2f %.2f %.2f", avgs[0], avgs[1], avgs[2]); } -static char * +static const char * +num_files(const char *dir) +{ + struct dirent *dp; + DIR *fd; + int num = 0; + + if ((fd = opendir(dir)) == NULL) { + warn("Failed to get number of files in directory %s", dir); + return unknown_str; + } + + 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); +} + +static const char * ram_free(void) { long free; FILE *fp; + int n; - if (!(fp = fopen("/proc/meminfo", "r"))) { - fprintf(stderr, "Error opening meminfo file.\n"); - return smprintf(unknowntext); + fp = fopen("/proc/meminfo", "r"); + if (fp == NULL) { + warn("Failed to open file /proc/meminfo"); + return unknown_str; } - - fscanf(fp, "MemFree: %ld kB\n", &free); + n = fscanf(fp, "MemFree: %ld kB\n", &free); fclose(fp); - return smprintf("%f", (float)free / 1024 / 1024); + if (n != 1) + return unknown_str; + + return bprintf("%f", (float)free / 1024 / 1024); } -static char * +static const char * ram_perc(void) { - int perc; long total, free, buffers, cached; FILE *fp; - if (!(fp = fopen("/proc/meminfo", "r"))) { - fprintf(stderr, "Error opening meminfo file.\n"); - return smprintf(unknowntext); - } + 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); - 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("%d", 100 * ((total - free) - (buffers + cached)) / total); +scanerr: fclose(fp); - perc = 100 * ((total - free) - (buffers + cached)) / total; - return smprintf("%d%%", perc); + return unknown_str; } -static char * +static const char * ram_total(void) { long total; FILE *fp; + int n; - if (!(fp = fopen("/proc/meminfo", "r"))) { - fprintf(stderr, "Error opening meminfo file.\n"); - return smprintf(unknowntext); + fp = fopen("/proc/meminfo", "r"); + if (fp == NULL) { + warn("Failed to open file /proc/meminfo"); + return unknown_str; } - - fscanf(fp, "MemTotal: %ld kB\n", &total); + n = fscanf(fp, "MemTotal: %ld kB\n", &total); fclose(fp); - return smprintf("%f", (float)total / 1024 / 1024); + if (n != 1) + return unknown_str; + + return bprintf("%f", (float)total / 1024 / 1024); } -static char * +static const char * ram_used(void) { - long free, total, buffers, cached, used; + long free, total, buffers, cached; FILE *fp; - if (!(fp = fopen("/proc/meminfo", "r"))) { - fprintf(stderr, "Error opening meminfo file.\n"); - return smprintf(unknowntext); - } + 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); - 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("%f", (float)(total - free - buffers - cached) / 1024 / 1024); +scanerr: fclose(fp); - used = total - free - buffers - cached; - return smprintf("%f", (float)used / 1024 / 1024); + return unknown_str; } -static char * -run_command(const char* command) +static const char * +run_command(const char *cmd) { - int good; + char *p; FILE *fp; - char buffer[64]; - if (!(fp = popen(command, "r"))) { - fprintf(stderr, "Could not get command output for: %s.\n", command); - return smprintf(unknowntext); + fp = popen(cmd, "r"); + if (fp == NULL) { + warn("Failed to get command output for %s", cmd); + return unknown_str; } - - fgets(buffer, sizeof(buffer) - 1, fp); + p = fgets(buf, sizeof(buf) - 1, fp); pclose(fp); - for (int i = 0 ; i != sizeof(buffer); i++) { - if (buffer[i] == '\0') { - good = 1; - break; - } + 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; } - if (good) - buffer[strlen(buffer) - 1] = '\0'; - return smprintf("%s", buffer); + 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 char * -temp(const char *file) +static const char * +swap_perc(void) { - int temperature; + long total, free, cached; FILE *fp; + size_t bytes_read; + char *match; - if (!(fp = fopen(file, "r"))) { - fprintf(stderr, "Could not open temperature file.\n"); - return smprintf(unknowntext); + fp = fopen("/proc/meminfo", "r"); + if (fp == NULL) { + warn("Failed to open file /proc/meminfo"); + return unknown_str; } - fscanf(fp, "%d", &temperature); + if ((bytes_read = fread(buf, sizeof(char), sizeof(buf) - 1, fp)) == 0) { + warn("swap_perc: read error"); + fclose(fp); + return unknown_str; + } fclose(fp); - return smprintf("%d°C", temperature / 1000); + + 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 char * -uptime(void) +static const char * +swap_total(void) { - struct sysinfo info; - int hours = 0; - int minutes = 0; + long total; + FILE *fp; + size_t bytes_read; + char *match; - sysinfo(&info); - hours = info.uptime / 3600; - minutes = (info.uptime - hours * 3600 ) / 60; + 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 smprintf("%dh %dm", hours, minutes); + return bprintf("%f", (float)total / 1024 / 1024); } -static char * -username(void) +static const char * +swap_used(void) { - register struct passwd *pw; - register uid_t uid; + long total, free, cached; + FILE *fp; + size_t bytes_read; + char *match; - uid = geteuid(); - pw = getpwuid(uid); + 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; - if (pw) - return smprintf("%s", pw->pw_name); - else { - fprintf(stderr, "Could not get username.\n"); - return smprintf(unknowntext); + 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 smprintf(unknowntext); + return bprintf("%d", temp / 1000); } -static char * -uid(void) +static const char * +uptime(void) { - register uid_t uid; + 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); +} - uid = geteuid(); +static const char * +username(void) +{ + struct passwd *pw = getpwuid(geteuid()); - if (uid) - return smprintf("%d", uid); - else { - fprintf(stderr, "Could not get uid.\n"); - return smprintf(unknowntext); + if (pw == NULL) { + warn("Failed to get username"); + return unknown_str; } - return smprintf(unknowntext); + return bprintf("%s", pw->pw_name); } - -static char * -vol_perc(const char *soundcard) +static const char * +uid(void) { - 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; + return bprintf("%d", geteuid()); +} - 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); - if (vol_info == NULL || mute_info == NULL) { - fprintf(stderr, "Could not get alsa volume.\n"); - return smprintf(unknowntext); +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; + } + } } - 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(pcm_mixer, &min, &max); - snd_mixer_selem_get_playback_volume(pcm_mixer, SND_MIXER_SCHN_MONO, &vol); - snd_mixer_selem_get_playback_switch(mas_mixer, SND_MIXER_SCHN_MONO, &mute); + close(afd); - 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); + return bprintf("%d", v & 0xff); } -static char * -wifi_perc(const char *wificard) +static const char * +wifi_perc(const char *iface) { - int bufsize = 255; - int strength; - char buf[bufsize]; - char *datastart; - char path[64]; + int i, perc; + char *p, *datastart; + char path[PATH_MAX]; char status[5]; - char needle[sizeof wificard + 1]; FILE *fp; - memset(path, 0, sizeof path); - strlcat(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"); - return smprintf(unknowntext); + 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; } - - fgets(status, 5, fp); + p = fgets(status, 5, fp); fclose(fp); - if(strcmp(status, "up\n") != 0) - return smprintf(unknowntext); - - if (!(fp = fopen("/proc/net/wireless", "r"))) { - fprintf(stderr, "Error opening wireless file.\n"); - return smprintf(unknowntext); + if(!p || strcmp(status, "up\n") != 0) { + return 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) { - datastart = strstr(buf, ":"); - sscanf(datastart + 1, " %*d %d %*d %*d %*d %*d %*d %*d %*d %*d", &strength); + 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); - return smprintf("%d%%", strength); + 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 char * -wifi_essid(const char *wificard) +static const char * +wifi_essid(const char *iface) { - char id[IW_ESSID_MAX_SIZE+1]; - int sockfd; + 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; - sprintf(wreq.ifr_name, wificard); - if((sockfd = socket(AF_INET, SOCK_DGRAM, 0)) == -1) { - fprintf(stderr, "Cannot open socket for interface: %s\n", wificard); - return smprintf(unknowntext); + 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) { - fprintf(stderr, "Get ESSID ioctl failed for interface %s\n", wificard); - return smprintf(unknowntext); + warn("Failed to get ESSID for interface %s", iface); + return unknown_str; } - if (strcmp((char *)wreq.u.essid.pointer, "") == 0) - return smprintf(unknowntext); + close(sockfd); + + if (strcmp(id, "") == 0) + return unknown_str; else - return smprintf("%s", (char *)wreq.u.essid.pointer); + 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); } int -main(void) +main(int argc, char *argv[]) { - size_t i; - char status_string[4096]; - char *res, *element; 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 (!(dpy = XOpenDisplay(0x0))) { - fprintf(stderr, "Cannot open display!\n"); - exit(1); + if (argc) { + usage(); } - for (;;) { - memset(status_string, 0, sizeof(status_string)); - for (i = 0; i < sizeof(args) / sizeof(args[0]); ++i) { + 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]; - if (argument.args == NULL) - res = argument.func(); - else - res = argument.func(argument.args); - element = smprintf(argument.format, res); - if (element == NULL) { - element = smprintf(unknowntext); - fprintf(stderr, "Failed to format output.\n"); + 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; } - strlcat(status_string, element, sizeof(status_string)); - free(res); - free(element); } - setstatus(status_string); - sleep(update_interval -1); + 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); } - XCloseDisplay(dpy); return 0; }