add configs

"Not charging" is 12 characters; %12[a-zA-Z ] reads up to 12 chars
plus a NUL terminator (13 bytes) into a 12-byte buffer. Increase
state buffer to 13 in both battery_state and battery_remaining.

LICENSE

@@ -1,6 +1,6 @@
 ISC License
 
-Copyright 2016-2022 Aaron Marcher <me@drkhsh.at>
+Copyright 2016-2026 Aaron Marcher <me@drkhsh.at>
 
 Copyright 2016 Roy Freytag <rfreytag@hs-mittweida.de>
 Copyright 2016 Vincent Loupmon <vincentloupmon@gmail.com>
@@ -21,7 +21,7 @@ Copyright 2018 Ian Remmler <ian@remmler.org>
 Copyright 2016-2019 Joerg Jung <jung@openbsd.org>
 Copyright 2019 Ryan Kes <alrayyes@gmail.com>
 Copyright 2019 Cem Keylan <cem@ckyln.com>
-Copyright 2019 Dimitris Papastamos <dsp@2f30.org>
+Copyright 2019 Spiros Thanasoulas <dsp@2f30.org>
 Copyright 2019-2022 Ingo Feinerer <feinerer@logic.at>
 Copyright 2020 Alexandre Ratchov <alex@caoua.org>
 Copyright 2020 Mart Lubbers <mart@martlubbers.net>
@@ -29,6 +29,9 @@ Copyright 2020 Daniel Moch <daniel@danielmoch.com>
 Copyright 2022 Nickolas Raymond Kaczynski <nrk@disroot.org>
 Copyright 2022 Patrick Iacob <iacobp@oregonstate.edu>
 Copyright 2021-2022 Steven Ward <planet36@gmail.com>
+Copyright 2025 Joakim Sindholt <opensource@zhasha.com>
+Copyright 2025 Al <eirann@disroot.org>
+Copyright 2025 sewn <sewn@disroot.org>
 
 Permission to use, copy, modify, and/or distribute this software for any
 purpose with or without fee is hereby granted, provided that the above

README

@@ -18,7 +18,7 @@ Features
 - Available entropy
 - Username/GID/UID
 - Hostname
-- IP address (IPv4 and IPv6)
+- IP address (IPv4 and IPv6), interface status
 - Kernel version
 - Keyboard indicators
 - Keymap

components/battery.c

@@ -62,7 +62,7 @@
 			{ "Not charging", "o" },
 		};
 		size_t i;
-		char path[PATH_MAX], state[12];
+		char path[PATH_MAX], state[13];
 
 		if (esnprintf(path, sizeof(path), POWER_SUPPLY_STATUS, bat) < 0)
 			return NULL;
@@ -81,7 +81,7 @@
 	{
 		uintmax_t charge_now, current_now, m, h;
 		double timeleft;
-		char path[PATH_MAX], state[12];
+		char path[PATH_MAX], state[13];
 
 		if (esnprintf(path, sizeof(path), POWER_SUPPLY_STATUS, bat) < 0)
 			return NULL;

components/ram.c

@@ -11,36 +11,45 @@
 	ram_free(const char *unused)
 	{
 		uintmax_t free;
+		FILE *fp;
 
-		if (pscanf("/proc/meminfo",
-		           "MemTotal: %ju kB\n"
-		           "MemFree: %ju kB\n"
-		           "MemAvailable: %ju kB\n",
-		           &free, &free, &free) != 3)
+		if (!(fp = fopen("/proc/meminfo", "r")))
 			return NULL;
 
+		if (lscanf(fp, "MemFree:", "%ju kB", &free) != 1) {
+			fclose(fp);
+			return NULL;
+		}
+
+		fclose(fp);
 		return fmt_human(free * 1024, 1024);
 	}
 
 	const char *
 	ram_perc(const char *unused)
 	{
-		uintmax_t total, free, buffers, cached;
+		uintmax_t total, free, buffers, cached, shmem, sreclaimable;
 		int percent;
+		FILE *fp;
 
-		if (pscanf("/proc/meminfo",
-		           "MemTotal: %ju kB\n"
-		           "MemFree: %ju kB\n"
-		           "MemAvailable: %ju kB\n"
-		           "Buffers: %ju kB\n"
-		           "Cached: %ju kB\n",
-		           &total, &free, &buffers, &buffers, &cached) != 5)
+		if (!(fp = fopen("/proc/meminfo", "r")))
 			return NULL;
 
+		if (lscanf(fp, "MemTotal:", "%ju kB", &total)  != 1 ||
+		    lscanf(fp, "MemFree:", "%ju kB", &free)    != 1 ||
+		    lscanf(fp, "Buffers:", "%ju kB", &buffers) != 1 ||
+		    lscanf(fp, "Cached:", "%ju kB", &cached)   != 1 ||
+		    lscanf(fp, "Shmem:", "%ju kB", &shmem)     != 1 ||
+		    lscanf(fp, "SReclaimable:", "%ju kB", &sreclaimable) != 1) {
+			fclose(fp);
+			return NULL;
+		}
+		fclose(fp);
+
 		if (total == 0)
 			return NULL;
 
-		percent = 100 * ((total - free) - (buffers + cached)) / total;
+		percent = 100 * (total - free - buffers - cached - sreclaimable + shmem) / total;
 		return bprintf("%d", percent);
 	}
 
@@ -59,18 +68,24 @@
 	const char *
 	ram_used(const char *unused)
 	{
-		uintmax_t total, free, buffers, cached, used;
+		uintmax_t total, free, buffers, cached, used, shmem, sreclaimable;
+		FILE *fp;
 
-		if (pscanf("/proc/meminfo",
-		           "MemTotal: %ju kB\n"
-		           "MemFree: %ju kB\n"
-		           "MemAvailable: %ju kB\n"
-		           "Buffers: %ju kB\n"
-		           "Cached: %ju kB\n",
-		           &total, &free, &buffers, &buffers, &cached) != 5)
+		if (!(fp = fopen("/proc/meminfo", "r")))
 			return NULL;
 
-		used = (total - free - buffers - cached);
+		if (lscanf(fp, "MemTotal:", "%ju kB", &total)  != 1 ||
+		    lscanf(fp, "MemFree:", "%ju kB", &free)    != 1 ||
+		    lscanf(fp, "Buffers:", "%ju kB", &buffers) != 1 ||
+		    lscanf(fp, "Cached:", "%ju kB", &cached)   != 1 ||
+		    lscanf(fp, "Shmem:", "%ju kB", &shmem)     != 1 ||
+		    lscanf(fp, "SReclaimable:", "%ju kB", &sreclaimable) != 1) {
+			fclose(fp);
+			return NULL;
+		}
+		fclose(fp);
+
+		used = total - free - buffers - cached - sreclaimable + shmem;
 		return fmt_human(used * 1024, 1024);
 	}
 #elif defined(__OpenBSD__)

components/volume.c

@@ -89,6 +89,8 @@
 			if (c->addr == addr)
 				break;
 		}
+		if (c == NULL)
+			return;
 		c->val = val;
 	}
 
@@ -217,3 +219,33 @@
 		return bprintf("%d", v & 0xff);
 	}
 #endif
+
+const char *
+vol_perc_pw(const char *sink)
+{
+	FILE *fp;
+	char buf[64], cmd[64];
+	double v;
+
+	if (esnprintf(cmd, sizeof(cmd), "wpctl get-volume %s", sink) < 0)
+		return NULL;
+
+	if (!(fp = popen(cmd, "r"))) {
+		warn("popen '%s':", cmd);
+		return NULL;
+	}
+
+	if (!fgets(buf, sizeof(buf), fp)) {
+		pclose(fp);
+		return NULL;
+	}
+	pclose(fp);
+
+	if (strstr(buf, "[MUTED]"))
+		return "mute";
+
+	if (sscanf(buf, "Volume: %lf", &v) != 1)
+		return NULL;
+
+	return bprintf("%d%%", (int)(v * 100 + 0.5));
+}

components/wifi.c

@@ -26,24 +26,16 @@
 	static char resp[4096];
 
 	static char *
-	findattr(int attr, char *p, char *e, size_t *len)
+	findattr(int attr, const char *p, const char *e, size_t *len)
 	{
-		struct nlattr nla;
-		size_t alen;
-
-		while ((size_t)(e-p) >= sizeof(nla)) {
+		while (p < e) {
+			struct nlattr nla;
 			memcpy(&nla, p, sizeof(nla));
-			if (nla.nla_len < NLA_HDRLEN)
-				return NULL;
 			if (nla.nla_type == attr) {
-				p += NLA_HDRLEN;
-				*len = nla.nla_len-NLA_HDRLEN;
-				return (size_t)(e-p)>=*len?p:NULL;
+				*len = nla.nla_len - NLA_HDRLEN;
+				return (char *)(p + NLA_HDRLEN);
 			}
-			alen = NLA_ALIGN(nla.nla_len);
-			if ((size_t)(e-p) < alen)
-				return NULL;
-			p += alen;
+			p += NLA_ALIGN(nla.nla_len);
 		}
 		return NULL;
 	}
@@ -97,9 +89,10 @@
 		}
 		if ((size_t)r <= sizeof(ctrl))
 			return 0;
-		p = findattr(CTRL_ATTR_FAMILY_ID, resp+sizeof(ctrl), resp+r, &len);
+		p = findattr(CTRL_ATTR_FAMILY_ID, resp + sizeof(ctrl), resp + r, &len);
 		if (p && len == 2)
 			memcpy(&id, p, 2);
+
 		return id;
 	}
 
@@ -117,10 +110,10 @@
 		}
 		if (strcmp(ifr.ifr_name, interface) != 0) {
 			strcpy(ifr.ifr_name, interface);
-			if (ioctl(ifsock, SIOCGIFINDEX, &ifr) != 0) {
-				warn("ioctl 'SIOCGIFINDEX':");
-				return -1;
-			}
+		}
+		if (ioctl(ifsock, SIOCGIFINDEX, &ifr) != 0) {
+			warn("ioctl 'SIOCGIFINDEX':");
+			return -1;
 		}
 		return ifr.ifr_ifindex;
 	}
@@ -172,11 +165,12 @@
 			return NULL;
 		}
 
-		if ((size_t)r <= NLMSG_HDRLEN+GENL_HDRLEN)
+		if ((size_t)r <= NLMSG_HDRLEN + GENL_HDRLEN)
 			return NULL;
-		p = findattr(NL80211_ATTR_SSID, resp+NLMSG_HDRLEN+GENL_HDRLEN, resp+r, &len);
+		p = findattr(NL80211_ATTR_SSID, resp + NLMSG_HDRLEN + GENL_HDRLEN, resp + r, &len);
 		if (p)
 			p[len] = 0;
+
 		return p;
 	}
 
@@ -188,8 +182,9 @@
 		uint16_t fam = nl80211fam();
 		ssize_t r;
 		size_t len;
-		char req[NLMSG_HDRLEN+GENL_HDRLEN+NLA_HDRLEN+NLA_ALIGN(4)] = {0}, *p = req, *e;
+		char req[NLMSG_HDRLEN + GENL_HDRLEN + NLA_HDRLEN + NLA_ALIGN(4)] = {0}, *p = req, *e;
 		int idx = ifindex(interface);
+
 		if (idx < 0) {
 			fprintf(stderr, "interface %s not found\n", interface);
 			return NULL;
@@ -209,16 +204,17 @@
 		}, sizeof(struct genlmsghdr));
 		p += GENL_HDRLEN;
 		memcpy(p, &(struct nlattr){
-			.nla_len = NLA_HDRLEN+4,
+			.nla_len = NLA_HDRLEN + 4,
 			.nla_type = NL80211_ATTR_IFINDEX,
 		}, sizeof(struct nlattr));
 		p += NLA_HDRLEN;
-		memcpy(p, &(uint32_t){idx}, 4);
+		memcpy(p, &idx, 4);
 
 		if (send(nlsock, req, sizeof(req), 0) != sizeof(req)) {
 			warn("send 'AF_NETLINK':");
 			return NULL;
 		}
+
 		*strength = 0;
 		while (1) {
 			r = recv(nlsock, resp, sizeof(resp), 0);
@@ -228,9 +224,11 @@
 			}
 			if ((size_t)r < sizeof(hdr))
 				return NULL;
-			for (p = resp; p != resp+r && (size_t)(resp+r-p) >= sizeof(hdr); p = e) {
+
+			for (p = resp; p != resp + r && (size_t)(resp + r-p) >= sizeof(hdr); p = e) {
 				memcpy(&hdr, p, sizeof(hdr));
-				e = resp+r-p<hdr.nlmsg_len?resp+r:p+hdr.nlmsg_len;
+				e = resp + r - p < hdr.nlmsg_len ? resp + r : p + hdr.nlmsg_len;
+
 				if (!*strength && hdr.nlmsg_len > NLMSG_HDRLEN+GENL_HDRLEN) {
 					p += NLMSG_HDRLEN+GENL_HDRLEN;
 					p = findattr(NL80211_ATTR_STA_INFO, p, e, &len);
@@ -240,7 +238,7 @@
 						snprintf(strength, sizeof(strength), "%d", RSSI_TO_PERC(*p));
 				}
 				if (hdr.nlmsg_type == NLMSG_DONE)
-					return *strength?strength:NULL;
+					return *strength ? strength : NULL;
 			}
 		}
 	}

config.def.h

@@ -65,6 +65,9 @@ static const char unknown_str[] = "n/a";
  * wifi_perc           WiFi signal in percent          interface name (wlan0)
  */
 static const struct arg args[] = {
-	/* function format          argument */
-	{ datetime, "%s",           "%F %T" },
+	/* function          format          argument */
+	{ wifi_perc,         " wifi %s%% |", "wlan0" },
+	{ battery_perc,      " bat %s%% |",  "BAT0" },
+	{ vol_perc_pw,       " vol %s |",    "@DEFAULT_AUDIO_SINK@" },
+	{ datetime,          " %s",          "%F %T" },
 };

config.h

@@ -0,0 +1,70 @@
+/* See LICENSE file for copyright and license details. */
+
+/* interval between updates (in ms) */
+const unsigned int interval = 1000;
+
+/* text to show if no value can be retrieved */
+static const char unknown_str[] = "n/a";
+
+/* maximum output string length */
+#define MAXLEN 2048
+
+/*
+ * function            description                     argument (example)
+ *
+ * battery_perc        battery percentage              battery name (BAT0)
+ *                                                     NULL on OpenBSD/FreeBSD
+ * battery_remaining   battery remaining HH:MM         battery name (BAT0)
+ *                                                     NULL on OpenBSD/FreeBSD
+ * battery_state       battery charging state          battery name (BAT0)
+ *                                                     NULL on OpenBSD/FreeBSD
+ * cat                 read arbitrary file             path
+ * cpu_freq            cpu frequency in MHz            NULL
+ * cpu_perc            cpu usage in percent            NULL
+ * datetime            date and time                   format string (%F %T)
+ * disk_free           free disk space in GB           mountpoint path (/)
+ * disk_perc           disk usage in percent           mountpoint path (/)
+ * disk_total          total disk space in GB          mountpoint path (/)
+ * disk_used           used disk space in GB           mountpoint path (/)
+ * entropy             available entropy               NULL
+ * gid                 GID of current user             NULL
+ * hostname            hostname                        NULL
+ * ipv4                IPv4 address                    interface name (eth0)
+ * ipv6                IPv6 address                    interface name (eth0)
+ * kernel_release      `uname -r`                      NULL
+ * keyboard_indicators caps/num lock indicators        format string (c?n?)
+ *                                                     see keyboard_indicators.c
+ * keymap              layout (variant) of current     NULL
+ *                     keymap
+ * load_avg            load average                    NULL
+ * netspeed_rx         receive network speed           interface name (wlan0)
+ * netspeed_tx         transfer network speed          interface name (wlan0)
+ * num_files           number of files in a directory  path
+ *                                                     (/home/foo/Inbox/cur)
+ * ram_free            free memory in GB               NULL
+ * ram_perc            memory usage in percent         NULL
+ * ram_total           total memory size in GB         NULL
+ * ram_used            used memory in GB               NULL
+ * run_command         custom shell command            command (echo foo)
+ * swap_free           free swap in GB                 NULL
+ * swap_perc           swap usage in percent           NULL
+ * swap_total          total swap size in GB           NULL
+ * swap_used           used swap in GB                 NULL
+ * temp                temperature in degree celsius   sensor file
+ *                                                     (/sys/class/thermal/...)
+ *                                                     NULL on OpenBSD
+ *                                                     thermal zone on FreeBSD
+ *                                                     (tz0, tz1, etc.)
+ * uid                 UID of current user             NULL
+ * up                  interface is running            interface name (eth0)
+ * uptime              system uptime                   NULL
+ * username            username of current user        NULL
+ * vol_perc            OSS/ALSA volume in percent      mixer file (/dev/mixer)
+ *                                                     NULL on OpenBSD/FreeBSD
+ * wifi_essid          WiFi ESSID                      interface name (wlan0)
+ * wifi_perc           WiFi signal in percent          interface name (wlan0)
+ */
+static const struct arg args[] = {
+    /* function          format          argument */
+    {wifi_essid, "%s", "wlan0"}, {wifi_perc, " %s%% |", "wlan0"}, {battery_perc, " bat %s%%", "BAT0"}, {battery_state, "%s |", "BAT0"}, {vol_perc_pw, " vol %s |", "@DEFAULT_AUDIO_SINK@"}, {datetime, " %s", "%F %T"},
+};

config.mk

@@ -1,5 +1,5 @@
 # slstatus version
-VERSION = 1.0
+VERSION = 1.1
 
 # customize below to fit your system
 

slstatus.h

@@ -79,6 +79,7 @@ const char *username(const char *unused);
 
 /* volume */
 const char *vol_perc(const char *card);
+const char *vol_perc_pw(const char *sink);
 
 /* wifi */
 const char *wifi_essid(const char *interface);

util.c

@@ -139,3 +139,20 @@ pscanf(const char *path, const char *fmt, ...)
 
 	return (n == EOF) ? -1 : n;
 }
+
+int
+lscanf(FILE *fp, const char *key, const char *fmt, void *res)
+{
+		int n;
+		char line[256];
+
+		n = -1;
+		while (fgets(line, sizeof(line), fp))
+			if (strncmp(line, key, strlen(key)) == 0) {
+				n = sscanf(line + strlen(key), fmt, res);
+				break;
+			}
+
+		rewind(fp);
+		return (n == 1) ? 1 : -1;
+}

util.h

@@ -1,5 +1,6 @@
 /* See LICENSE file for copyright and license details. */
 #include <stdint.h>
+#include <stdio.h>
 
 extern char buf[1024];
 
@@ -14,3 +15,4 @@ int esnprintf(char *str, size_t size, const char *fmt, ...);
 const char *bprintf(const char *fmt, ...);
 const char *fmt_human(uintmax_t num, int base);
 int pscanf(const char *path, const char *fmt, ...);
+int lscanf(FILE *fp, const char *key, const char *fmt, void *res);