slstatus

OSHs slstatus build
git clone git://git.oshgnacknak.de/slstatus.git
Log | Files | Refs | README | LICENSE

commit e3c9a6f92313b9e2ac1b409895b70fd09f6c774d
parent 7392dbabebe69187618f31301a7842d4d2993966
Author: Aaron Marcher <info@nulltime.net>
Date:   Thu, 29 Dec 2016 23:27:57 +0100

Merge pull request #32 from R41z/master

several bugfixes and general improvements, see commits below.
Diffstat:
MCONTRIBUTORS.md | 2+-
ATODO.md | 6++++++
Mextern/concat.h | 3+++
Dextern/strlcpy.h | 50--------------------------------------------------
Mslstatus.c | 235++++++++++++++++++++++++++++++++++++++++++-------------------------------------
5 files changed, 134 insertions(+), 162 deletions(-)

diff --git 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 @@ -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 @@ -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 @@ -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 <Todd.Miller@courtesan.com> - * - * 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 @@ -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); } @@ -716,33 +729,27 @@ 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) { if (signo == SIGTERM || signo == SIGINT) { @@ -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); }