Merge pull request #32 from R41z/master

several bugfixes and general improvements, see commits below.

diff --git a/CONTRIBUTORS.md b/CONTRIBUTORS.md
index 3ece0d9..610d4bf 100644 (file)
--- a/CONTRIBUTORS.md
+++ b/CONTRIBUTORS.md
@@ -6,6 +6,6 @@ Thanks you very much for your great help!
 - [Vlaix](https://github.com/Vlaix)
 - [pfannkuckengesicht](https://github.com/pfannkuchengesicht)
 - [sahne](https://github.com/sahne)
-- [Ali H. Fardan](http://raiz.duckdns.org)
+- [Ali H. Fardan](http://hexeract.info)
 - [Quentin Rameau](https://fifth.space)
 - [Mike Coddington](https://coddington.us)

diff --git a/TODO.md b/TODO.md
new file mode 100644 (file)
index 0000000..c95b57d
--- /dev/null
+++ b/TODO.md
@@ -0,0 +1,6 @@
+* [ ] fix build on OpenBSD
+* [ ] fix build on NetBSD
+* [ ] fix build on FreeBSD
+* [ ] test wifi functions after the last few commits
+* [ ] allow calling routines from command line arguments like: slstatus --datetime "%F %T"
+*      [X] see if drkhsh approves it

diff --git a/extern/concat.h b/extern/concat.h
index 7f2ea46..0f3be99 100644 (file)
--- a/extern/concat.h
+++ b/extern/concat.h
@@ -11,6 +11,9 @@ ccat(const unsigned short int count, ...)
        unsigned short int i;
        concat[0] = '\0';
 
+       if (count == 0)
+               return;
+
        va_start(ap, count);
        for(i = 0; i < count; i++)
                strlcat(concat, va_arg(ap, char *), sizeof(concat));

diff --git a/extern/strlcpy.h b/extern/strlcpy.h
deleted file mode 100644 (file)
index 6301674..0000000
--- a/extern/strlcpy.h
+++ /dev/null
@@ -1,50 +0,0 @@
-/*     $OpenBSD: strlcpy.c,v 1.13 2015/08/31 02:53:57 guenther Exp $   */
-
-/*
- * Copyright (c) 1998, 2015 Todd C. Miller <[email protected]>
- *
- * Permission to use, copy, modify, and distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
- * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
- * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
- * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
- * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- */
-
-#include <sys/types.h>
-#include <string.h>
-
-/*
- * Copy string src to buffer dst of size dsize.  At most dsize-1
- * chars will be copied.  Always NUL terminates (unless dsize == 0).
- * Returns strlen(src); if retval >= dsize, truncation occurred.
- */
-size_t
-strlcpy(char *dst, const char *src, size_t dsize)
-{
-       const char *osrc = src;
-       size_t nleft = dsize;
-
-       /* Copy as many bytes as will fit. */
-       if (nleft != 0) {
-               while (--nleft != 0) {
-                       if ((*dst++ = *src++) == '\0')
-                               break;
-               }
-       }
-
-       /* Not enough room in dst, add NUL and traverse rest of src. */
-       if (nleft == 0) {
-               if (dsize != 0)
-                       *dst = '\0';            /* NUL-terminate dst */
-               while (*src++)
-                       ;
-       }
-
-       return(src - osrc - 1); /* count does not include NUL */
-}

diff --git a/slstatus.c b/slstatus.c
index 7ef9e23..46e13c9 100644 (file)
--- a/slstatus.c
+++ b/slstatus.c
@@ -30,7 +30,6 @@
 
 #include "extern/arg.h"
 #include "extern/strlcat.h"
-#include "extern/strlcpy.h"
 #include "extern/concat.h"
 
 struct arg {
@@ -70,13 +69,12 @@ static char *username(void);
 static char *vol_perc(const char *card);
 static char *wifi_perc(const char *iface);
 static char *wifi_essid(const char *iface);
-static void set_status(const char *str);
 static void sighandler(const int signo);
-static void usage(void);
+static void usage(int);
 
 char *argv0;
 char concat[];
-static unsigned short int delay;
+static unsigned short int delay = 0;
 static unsigned short int done;
 static unsigned short int dflag, oflag;
 static Display *dpy;
@@ -116,7 +114,7 @@ battery_perc(const char *bat)
        fp = fopen(concat, "r");
        if (fp == NULL) {
                warn("Failed to open file %s", concat);
-               return smprintf(UNKNOWN_STR);
+               return smprintf("%s", UNKNOWN_STR);
        }
        fscanf(fp, "%i", &perc);
        fclose(fp);
@@ -134,7 +132,7 @@ battery_state(const char *bat)
        fp = fopen(concat, "r");
        if (fp == NULL) {
                warn("Failed to open file %s", concat);
-               return smprintf(UNKNOWN_STR);
+               return smprintf("%s", UNKNOWN_STR);
        }
        fscanf(fp, "%12s", state);
        fclose(fp);
@@ -160,18 +158,18 @@ cpu_perc(void)
        fp = fopen("/proc/stat", "r");
        if (fp == NULL) {
                warn("Failed to open file /proc/stat");
-               return smprintf(UNKNOWN_STR);
+               return smprintf("%s", UNKNOWN_STR);
        }
        fscanf(fp, "%*s %Lf %Lf %Lf %Lf", &a[0], &a[1], &a[2], &a[3]);
        fclose(fp);
 
-       delay = (UPDATE_INTERVAL - (UPDATE_INTERVAL - 1));
+       delay++;
        sleep(delay);
 
        fp = fopen("/proc/stat", "r");
        if (fp == NULL) {
                warn("Failed to open file /proc/stat");
-               return smprintf(UNKNOWN_STR);
+               return smprintf("%s", UNKNOWN_STR);
        }
        fscanf(fp, "%*s %Lf %Lf %Lf %Lf", &b[0], &b[1], &b[2], &b[3]);
        fclose(fp);
@@ -188,7 +186,7 @@ datetime(const char *fmt)
 
        t = time(NULL);
        if (strftime(str, sizeof(str), fmt, localtime(&t)) == 0) {
-               return smprintf(UNKNOWN_STR);
+               return smprintf("%s", UNKNOWN_STR);
        }
 
        return smprintf("%s", str);
@@ -201,7 +199,7 @@ disk_free(const char *mnt)
 
        if (statvfs(mnt, &fs) < 0) {
                warn("Failed to get filesystem info");
-               return smprintf(UNKNOWN_STR);
+               return smprintf("%s", UNKNOWN_STR);
        }
 
        return smprintf("%f", (float)fs.f_bsize * (float)fs.f_bfree / 1024 / 1024 / 1024);
@@ -215,7 +213,7 @@ disk_perc(const char *mnt)
 
        if (statvfs(mnt, &fs) < 0) {
                warn("Failed to get filesystem info");
-               return smprintf(UNKNOWN_STR);
+               return smprintf("%s", UNKNOWN_STR);
        }
 
        perc = 100 * (1.0f - ((float)fs.f_bfree / (float)fs.f_blocks));
@@ -230,7 +228,7 @@ disk_total(const char *mnt)
 
        if (statvfs(mnt, &fs) < 0) {
                warn("Failed to get filesystem info");
-               return smprintf(UNKNOWN_STR);
+               return smprintf("%s", UNKNOWN_STR);
        }
 
        return smprintf("%f", (float)fs.f_bsize * (float)fs.f_blocks / 1024 / 1024 / 1024);
@@ -243,7 +241,7 @@ disk_used(const char *mnt)
 
        if (statvfs(mnt, &fs) < 0) {
                warn("Failed to get filesystem info");
-               return smprintf(UNKNOWN_STR);
+               return smprintf("%s", UNKNOWN_STR);
        }
 
        return smprintf("%f", (float)fs.f_bsize * ((float)fs.f_blocks - (float)fs.f_bfree) / 1024 / 1024 / 1024);
@@ -258,7 +256,7 @@ entropy(void)
        fp= fopen("/proc/sys/kernel/random/entropy_avail", "r");
        if (fp == NULL) {
                warn("Failed to open file /proc/sys/kernel/random/entropy_avail");
-               return smprintf(UNKNOWN_STR);
+               return smprintf("%s", UNKNOWN_STR);
        }
        fscanf(fp, "%d", &num);
        fclose(fp);
@@ -279,7 +277,7 @@ hostname(void)
 
        if (gethostname(buf, sizeof(buf)) == -1) {
                warn("hostname");
-               return smprintf(UNKNOWN_STR);
+               return smprintf("%s", UNKNOWN_STR);
        }
 
        return smprintf("%s", buf);
@@ -294,7 +292,7 @@ ip(const char *iface)
 
        if (getifaddrs(&ifaddr) == -1) {
                warn("Failed to get IP address for interface %s", iface);
-               return smprintf(UNKNOWN_STR);
+               return smprintf("%s", UNKNOWN_STR);
        }
 
        for (ifa = ifaddr; ifa != NULL; ifa = ifa->ifa_next) {
@@ -305,7 +303,7 @@ ip(const char *iface)
                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 smprintf(UNKNOWN_STR);
+                               return smprintf("%s", UNKNOWN_STR);
                        }
                        return smprintf("%s", host);
                }
@@ -313,7 +311,7 @@ ip(const char *iface)
 
        freeifaddrs(ifaddr);
 
-       return smprintf(UNKNOWN_STR);
+       return smprintf("%s", UNKNOWN_STR);
 }
 
 static char *
@@ -335,7 +333,7 @@ load_avg(void)
 
        if (getloadavg(avgs, 3) < 0) {
                warnx("Failed to get the load avg");
-               return smprintf(UNKNOWN_STR);
+               return smprintf("%s", UNKNOWN_STR);
        }
 
        return smprintf("%.2f %.2f %.2f", avgs[0], avgs[1], avgs[2]);
@@ -350,7 +348,7 @@ ram_free(void)
        fp = fopen("/proc/meminfo", "r");
        if (fp == NULL) {
                warn("Failed to open file /proc/meminfo");
-               return smprintf(UNKNOWN_STR);
+               return smprintf("%s", UNKNOWN_STR);
        }
        fscanf(fp, "MemFree: %ld kB\n", &free);
        fclose(fp);
@@ -367,7 +365,7 @@ ram_perc(void)
        fp = fopen("/proc/meminfo", "r");
        if (fp == NULL) {
                warn("Failed to open file /proc/meminfo");
-               return smprintf(UNKNOWN_STR);
+               return smprintf("%s", UNKNOWN_STR);
        }
        fscanf(fp, "MemTotal: %ld kB\n", &total);
        fscanf(fp, "MemFree: %ld kB\n", &free);
@@ -387,7 +385,7 @@ ram_total(void)
        fp = fopen("/proc/meminfo", "r");
        if (fp == NULL) {
                warn("Failed to open file /proc/meminfo");
-               return smprintf(UNKNOWN_STR);
+               return smprintf("%s", UNKNOWN_STR);
        }
        fscanf(fp, "MemTotal: %ld kB\n", &total);
        fclose(fp);
@@ -404,7 +402,7 @@ ram_used(void)
        fp = fopen("/proc/meminfo", "r");
        if (fp == NULL) {
                warn("Failed to open file /proc/meminfo");
-               return smprintf(UNKNOWN_STR);
+               return smprintf("%s", UNKNOWN_STR);
        }
        fscanf(fp, "MemTotal: %ld kB\n", &total);
        fscanf(fp, "MemFree: %ld kB\n", &free);
@@ -418,19 +416,22 @@ ram_used(void)
 static char *
 run_command(const char *cmd)
 {
+       char *nlptr;
        FILE *fp;
-       char buf[1024] = "n/a";
+       char buf[1024] = UNKNOWN_STR;
 
        fp = popen(cmd, "r");
        if (fp == NULL) {
                warn("Failed to get command output for %s", cmd);
-               return smprintf(UNKNOWN_STR);
+               return smprintf("%s", UNKNOWN_STR);
        }
-       fgets(buf, sizeof(buf)-1, fp);
+       fgets(buf, sizeof(buf), fp);
        pclose(fp);
-
        buf[strlen(buf)] = '\0';
-       strtok(buf, "\n");
+
+       if ((nlptr = strstr(buf, "\n")) != NULL) {
+               nlptr[0] = '\0';
+       }
 
        return smprintf("%s", buf);
 }
@@ -447,23 +448,26 @@ swap_free(void)
        fp = fopen("/proc/meminfo", "r");
        if (fp == NULL) {
                warn("Failed to open file /proc/meminfo");
-               return smprintf(UNKNOWN_STR);
+               return smprintf("%s", UNKNOWN_STR);
+       }
+
+       if ((bytes_read = fread(buf, sizeof(char), sizeof(buf), fp)) == 0) {
+               warn("swap_free: read error");
+               fclose(fp);
+               return smprintf("%s", UNKNOWN_STR);
        }
-       bytes_read = fread(buf, sizeof(char), sizeof(buf), fp);
+
        buf[bytes_read] = '\0';
        fclose(fp);
-       if (bytes_read == 0 || bytes_read == sizeof(buf)) {
-               warn("Failed to read /proc/meminfo\n");
-               return smprintf(UNKNOWN_STR);
-       }
 
-       match = strstr(buf, "SwapTotal");
-       sscanf(match, "SwapTotal: %ld kB\n", &total);
-       if (total == 0) {
-               return smprintf(UNKNOWN_STR);
+       if ((match = strstr(buf, "SwapTotal")) == NULL) {
+               return smprintf("%s", UNKNOWN_STR);
        }
+       sscanf(match, "SwapTotal: %ld kB\n", &total);
 
-       match = strstr(buf, "SwapFree");
+       if ((match = strstr(buf, "SwapFree")) == NULL) {
+               return smprintf("%s", UNKNOWN_STR);
+       }
        sscanf(match, "SwapFree: %ld kB\n", &free);
 
        return smprintf("%f", (float)free / 1024 / 1024);
@@ -481,26 +485,31 @@ swap_perc(void)
        fp = fopen("/proc/meminfo", "r");
        if (fp == NULL) {
                warn("Failed to open file /proc/meminfo");
-               return smprintf(UNKNOWN_STR);
+               return smprintf("%s", UNKNOWN_STR);
+       }
+
+       if ((bytes_read = fread(buf, sizeof(char), sizeof(buf), fp)) == 0) {
+               warn("swap_perc: read error");
+               fclose(fp);
+               return smprintf("%s", UNKNOWN_STR);
        }
-       bytes_read = fread(buf, sizeof(char), sizeof(buf), fp);
+
        buf[bytes_read] = '\0';
        fclose(fp);
-       if (bytes_read == 0 || bytes_read == sizeof(buf)) {
-               warn("Failed to read /proc/meminfo\n");
-               return smprintf(UNKNOWN_STR);
-       }
 
-       match = strstr(buf, "SwapTotal");
-       sscanf(match, "SwapTotal: %ld kB\n", &total);
-       if (total == 0) {
-               return smprintf(UNKNOWN_STR);
+       if ((match = strstr(buf, "SwapTotal")) == NULL) {
+               return smprintf("%s", UNKNOWN_STR);
        }
+       sscanf(match, "SwapTotal: %ld kB\n", &total);
 
-       match = strstr(buf, "SwapCached");
+       if ((match = strstr(buf, "SwapCached")) == NULL) {
+               return smprintf("%s", UNKNOWN_STR);
+       }
        sscanf(match, "SwapCached: %ld kB\n", &cached);
 
-       match = strstr(buf, "SwapFree");
+       if ((match = strstr(buf, "SwapFree")) == NULL) {
+               return smprintf("%s", UNKNOWN_STR);
+       }
        sscanf(match, "SwapFree: %ld kB\n", &free);
 
        return smprintf("%d%%", 100 * (total - free - cached) / total);
@@ -518,21 +527,21 @@ swap_total(void)
        fp = fopen("/proc/meminfo", "r");
        if (fp == NULL) {
                warn("Failed to open file /proc/meminfo");
-               return smprintf(UNKNOWN_STR);
+               return smprintf("%s", UNKNOWN_STR);
+       }
+       if ((bytes_read = fread(buf, sizeof(char), sizeof(buf), fp)) == 0) {
+               warn("swap_total: read error");
+               fclose(fp);
+               return smprintf("%s", UNKNOWN_STR);
        }
-       bytes_read = fread(buf, sizeof(char), sizeof(buf), fp);
+
        buf[bytes_read] = '\0';
        fclose(fp);
-       if (bytes_read == 0 || bytes_read == sizeof(buf)) {
-               warn("Failed to read /proc/meminfo\n");
-               return smprintf(UNKNOWN_STR);
-       }
 
-       match = strstr(buf, "SwapTotal");
-       sscanf(match, "SwapTotal: %ld kB\n", &total);
-       if (total == 0) {
-               return smprintf(UNKNOWN_STR);
+       if ((match = strstr(buf, "SwapTotal")) == NULL) {
+               return smprintf("%s", UNKNOWN_STR);
        }
+       sscanf(match, "SwapTotal: %ld kB\n", &total);
 
        return smprintf("%f", (float)total / 1024 / 1024);
 }
@@ -549,26 +558,30 @@ swap_used(void)
        fp = fopen("/proc/meminfo", "r");
        if (fp == NULL) {
                warn("Failed to open file /proc/meminfo");
-               return smprintf(UNKNOWN_STR);
+               return smprintf("%s", UNKNOWN_STR);
+       }
+       if ((bytes_read = fread(buf, sizeof(char), sizeof(buf), fp)) == 0) {
+               warn("swap_used: read error");
+               fclose(fp);
+               return smprintf("%s", UNKNOWN_STR);
        }
-       bytes_read = fread(buf, sizeof(char), sizeof(buf), fp);
+
        buf[bytes_read] = '\0';
        fclose(fp);
-       if (bytes_read == 0 || bytes_read == sizeof(buf)) {
-               warn("Failed to read /proc/meminfo\n");
-               return smprintf(UNKNOWN_STR);
-       }
 
-       match = strstr(buf, "SwapTotal");
-       sscanf(match, "SwapTotal: %ld kB\n", &total);
-       if (total == 0) {
-               return smprintf(UNKNOWN_STR);
+       if ((match = strstr(buf, "SwapTotal")) == NULL) {
+               return smprintf("%s", UNKNOWN_STR);
        }
+       sscanf(match, "SwapTotal: %ld kB\n", &total);
 
-       match = strstr(buf, "SwapCached");
+       if ((match = strstr(buf, "SwapCached")) == NULL) {
+               return smprintf("%s", UNKNOWN_STR);
+       }
        sscanf(match, "SwapCached: %ld kB\n", &cached);
 
-       match = strstr(buf, "SwapFree");
+       if ((match = strstr(buf, "SwapFree")) == NULL) {
+               return smprintf("%s", UNKNOWN_STR);
+       }
        sscanf(match, "SwapFree: %ld kB\n", &free);
 
        return smprintf("%f", (float)(total - free - cached) / 1024 / 1024);
@@ -583,7 +596,7 @@ temp(const char *file)
        fp = fopen(file, "r");
        if (fp == NULL) {
                warn("Failed to open file %s", file);
-               return smprintf(UNKNOWN_STR);
+               return smprintf("%s", UNKNOWN_STR);
        }
        fscanf(fp, "%d", &temp);
        fclose(fp);
@@ -613,7 +626,7 @@ username(void)
 
        if (pw == NULL) {
                warn("Failed to get username");
-               return smprintf(UNKNOWN_STR);
+               return smprintf("%s", UNKNOWN_STR);
        }
 
        return smprintf("%s", pw->pw_name);
@@ -647,7 +660,7 @@ vol_perc(const char *card)
                snd_mixer_selem_id_free(s_elem);
                snd_mixer_close(handle);
                warn("Failed to get volume percentage for %s", card);
-               return smprintf(UNKNOWN_STR);
+               return smprintf("%s", UNKNOWN_STR);
        }
 
        snd_mixer_handle_events(handle);
@@ -679,18 +692,18 @@ wifi_perc(const char *iface)
        fp = fopen(concat, "r");
        if (fp == NULL) {
                warn("Failed to open file %s", concat);
-               return smprintf(UNKNOWN_STR);
+               return smprintf("%s", UNKNOWN_STR);
        }
        fgets(status, 5, fp);
        fclose(fp);
        if(strcmp(status, "up\n") != 0) {
-               return smprintf(UNKNOWN_STR);
+               return smprintf("%s", UNKNOWN_STR);
        }
 
        fp = fopen("/proc/net/wireless", "r");
        if (fp == NULL) {
                warn("Failed to open file /proc/net/wireless");
-               return smprintf(UNKNOWN_STR);
+               return smprintf("%s", UNKNOWN_STR);
        }
        ccat(2, iface, ":");
        fgets(buf, sizeof(buf), fp);
@@ -698,11 +711,11 @@ wifi_perc(const char *iface)
        fgets(buf, sizeof(buf), fp);
        fclose(fp);
 
-       datastart = strstr(buf, concat);
-       if (datastart != NULL) {
-               datastart = strstr(buf, ":");
-               sscanf(datastart + 1, " %*d   %d  %*d  %*d                %*d      %*d          %*d              %*d      %*d            %*d", &perc);
+       if ((datastart = strstr(buf, concat)) == NULL) {
+               return smprintf("%s", UNKNOWN_STR);
        }
+       datastart = (datastart+(strlen(iface)+1));
+       sscanf(datastart + 1, " %*d   %d  %*d  %*d                %*d      %*d          %*d              %*d      %*d            %*d", &perc);
 
        return smprintf("%d%%", perc);
 }
@@ -716,32 +729,26 @@ wifi_essid(const char *iface)
 
        memset(&wreq, 0, sizeof(struct iwreq));
        wreq.u.essid.length = IW_ESSID_MAX_SIZE+1;
-       sprintf(wreq.ifr_name, iface);
+       snprintf(wreq.ifr_name, sizeof(wreq.ifr_name), "%s", iface);
+
        if (sockfd == -1) {
                warn("Failed to get ESSID for interface %s", iface);
-               return smprintf(UNKNOWN_STR);
+               return smprintf("%s", UNKNOWN_STR);
        }
        wreq.u.essid.pointer = id;
        if (ioctl(sockfd,SIOCGIWESSID, &wreq) == -1) {
                warn("Failed to get ESSID for interface %s", iface);
-               return smprintf(UNKNOWN_STR);
+               return smprintf("%s", UNKNOWN_STR);
        }
 
        close(sockfd);
 
        if (strcmp((char *)wreq.u.essid.pointer, "") == 0)
-               return smprintf(UNKNOWN_STR);
+               return smprintf("%s", UNKNOWN_STR);
        else
                return smprintf("%s", (char *)wreq.u.essid.pointer);
 }
 
-static void
-set_status(const char *str)
-{
-       XStoreName(dpy, DefaultRootWindow(dpy), str);
-       XSync(dpy, False);
-}
-
 static void
 sighandler(const int signo)
 {
@@ -751,17 +758,17 @@ sighandler(const int signo)
 }
 
 static void
-usage(void)
+usage(int eval)
 {
-       fprintf(stderr, "usage: %s [-dhov]\n", argv0);
-       exit(1);
+       fprintf(stderr, "usage: %s [-d] [-o] [-v] [-h]\n", argv0);
+       exit(eval);
 }
 
 int
 main(int argc, char *argv[])
 {
        unsigned short int i;
-       char status_string[4096];
+       char status_string[2048];
        char *res, *element;
        struct arg argument;
        struct sigaction act;
@@ -776,12 +783,14 @@ main(int argc, char *argv[])
                case 'v':
                        printf("slstatus %s (C) 2016 slstatus engineers\n", VERSION);
                        return 0;
+               case 'h':
+                       usage(0);
                default:
-                       usage();
+                       usage(1);
        } ARGEND
 
        if (dflag && oflag) {
-               usage();
+               usage(1);
        }
        if (dflag && daemon(1, 1) < 0) {
                err(1, "daemon");
@@ -810,30 +819,34 @@ main(int argc, char *argv[])
                        }
                        element = smprintf(argument.fmt, res);
                        if (element == NULL) {
-                               element = smprintf(UNKNOWN_STR);
+                               element = smprintf("%s", UNKNOWN_STR);
                                warnx("Failed to format output");
                        }
-                       strlcat(status_string, element, sizeof(status_string));
+                       if (strlcat(status_string, element, sizeof(status_string)) >= sizeof(status_string)) {
+                               warnx("Output too long");
+                       }
                        free(res);
                        free(element);
                }
 
                if (!oflag) {
-                       set_status(status_string);
+                       XStoreName(dpy, DefaultRootWindow(dpy), status_string);
+                       XSync(dpy, False);
                } else {
                        printf("%s\n", status_string);
                }
 
-               /*
-                * subtract delay time spend in function
-                * calls from the actual global delay time
-                */
-               sleep(UPDATE_INTERVAL - delay);
-               delay = 0;
+               if ((UPDATE_INTERVAL - delay) <= 0) {
+                       delay = 0;
+                       continue;
+               } else {
+                       sleep(UPDATE_INTERVAL - delay);
+                       delay = 0;
+               }
        }
 
        if (!oflag) {
-               set_status(NULL);
+               XStoreName(dpy, DefaultRootWindow(dpy), NULL);
                XCloseDisplay(dpy);
        }