X-Git-Url: https://git.xinqibao.xyz/slstatus.git/blobdiff_plain/fb524b60508dd8adee66ae30e834632fd6b4402c..9078fb351dc3d1e2eac261ec185acef1f66180bc:/slstatus.c?ds=sidebyside

diff --git a/slstatus.c b/slstatus.c
index 7af71e0..4b69cc6 100644
--- a/slstatus.c
+++ b/slstatus.c
@@ -8,6 +8,7 @@
 #include <limits.h>
 #include <locale.h>
 #include <netdb.h>
+#include <pwd.h>
 #include <stdarg.h>
 #include <stdio.h>
 #include <stdlib.h>
@@ -149,6 +150,10 @@ datetime(const char *timeformat)
     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");
+    }
 
     /* get time in format */
     time(&tm);
@@ -257,6 +262,22 @@ entropy(const char *null)
     return smprintf("%d", entropy);
 }
 
+/* gid */
+char *
+gid(const char *null)
+{
+    gid_t gid;
+
+    if ((gid = getgid()) < 0) {
+        fprintf(stderr, "Could no get gid.");
+        return smprintf("n/a");
+    } else {
+        return smprintf("%d", gid);
+    }
+
+    return smprintf("n/a");
+}
+
 /* hostname */
 char *
 hostname(const char *null)
@@ -427,6 +448,32 @@ ram_used(const char *null)
     return smprintf("%f", (float)used / 1024 / 1024);
 }
 
+/* custom shell command */
+char *
+run_command(const char* command)
+{
+	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);
+
+    /* add nullchar at the end */
+	buffer[strlen(buffer) - 1] = '\0';
+
+    /* return the output */
+	return smprintf("%s", buffer);
+}
+
 /* temperature */
 char *
 temp(const char *file)
@@ -450,42 +497,103 @@ temp(const char *file)
     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;
-
-    /* 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;
+
+    /* 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);
-    if (vol_info)
+
+    /* clean up */
+    if (vol_info) {
         snd_mixer_selem_id_free(vol_info);
-    if (mute_info)
+    }
+    if (mute_info) {
         snd_mixer_selem_id_free(mute_info);
-    if (handle)
+    }
+    if (handle) {
         snd_mixer_close(handle);
+    }
 
     /* return the string (mute) */
-    if (!mute)
+    if (!mute) {
         return smprintf("mute");
-    else
+    }
+    else {
         return smprintf("%d%%", (vol * 100) / max);
+    }
 }
 
 /* wifi percentage */