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added daemonization support

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This commit is contained in:
Ali H. Fardan 2016-09-04 00:10:49 +03:00
parent de4f20ace3
commit d3d8b8ee03
3 changed files with 146 additions and 28 deletions
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51
arg.h Normal file
View file

@ -0,0 +1,51 @@
/*
* Copy me if you can.
* by 20h
*/
#ifndef ARG_H__
#define ARG_H__
extern char *argv0;
/* use main(int argc, char *argv[]) */
#define ARGBEGIN for (argv0 = *argv, argv++, argc--;\
argv[0] && argv[0][1]\
&& argv[0][0] == '-';\
argc--, argv++) {\
char argc_;\
char **argv_;\
int brk_;\
if (argv[0][1] == '-' && argv[0][2] == '\0') {\
argv++;\
argc--;\
break;\
}\
for (brk_ = 0, argv[0]++, argv_ = argv;\
argv[0][0] && !brk_;\
argv[0]++) {\
if (argv_ != argv)\
break;\
argc_ = argv[0][0];\
switch (argc_)
#define ARGEND }\
}
#define ARGC() argc_
#define ARGNUMF(base) (brk_ = 1, estrtol(argv[0], (base)))
#define EARGF(x) ((argv[0][1] == '\0' && argv[1] == NULL)?\
((x), abort(), (char *)0) :\
(brk_ = 1, (argv[0][1] != '\0')?\
(&argv[0][1]) :\
(argc--, argv++, argv[0])))
#define ARGF() ((argv[0][1] == '\0' && argv[1] == NULL)?\
(char *)0 :\
(brk_ = 1, (argv[0][1] != '\0')?\
(&argv[0][1]) :\
(argc--, argv++, argv[0])))
#endif

19
concat.h Normal file
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@ -0,0 +1,19 @@
/*
* Thanks to lloyd for contribution
*/
extern char concat[4096];
extern void
ccat(const unsigned short int count, ...)
{
va_list ap;
unsigned short int i;
concat[0] = '\0';
va_start(ap, count);
for(i = 0; i < count; i++)
strlcat(concat, va_arg(ap, char *), sizeof(concat));
va_end(ap);
return;
}

104
slstatus.c
View file

@ -24,8 +24,15 @@
#undef strlcat #undef strlcat
#undef strlcpy #undef strlcpy
#include "arg.h"
#include "strlcat.h" #include "strlcat.h"
#include "strlcpy.h" #include "strlcpy.h"
#include "concat.h"
char *argv0;
char concat[];
FILE *foutput;
struct arg { struct arg {
char *(*func)(); char *(*func)();
@ -107,7 +114,7 @@ battery_perc(const char *battery)
fp = fopen(batterynowfile, "r"); fp = fopen(batterynowfile, "r");
if (fp == NULL ) { if (fp == NULL ) {
fprintf(stderr, "Error opening battery file: %s: %s\n", fprintf(foutput, "Error opening battery file: %s: %s\n",
batterynowfile, batterynowfile,
strerror(errno)); strerror(errno));
return smprintf(UNKNOWN_STR); return smprintf(UNKNOWN_STR);
@ -118,7 +125,7 @@ battery_perc(const char *battery)
fp = fopen(batteryfullfile, "r"); fp = fopen(batteryfullfile, "r");
if (fp == NULL) { if (fp == NULL) {
fprintf(stderr, "Error opening battery file: %s\n", fprintf(foutput, "Error opening battery file: %s\n",
strerror(errno)); strerror(errno));
return smprintf(UNKNOWN_STR); return smprintf(UNKNOWN_STR);
} }
@ -139,7 +146,7 @@ cpu_perc(void)
FILE *fp = fopen("/proc/stat","r"); FILE *fp = fopen("/proc/stat","r");
if (fp == NULL) { if (fp == NULL) {
fprintf(stderr, "Error opening stat file: %s\n", fprintf(foutput, "Error opening stat file: %s\n",
strerror(errno)); strerror(errno));
return smprintf(UNKNOWN_STR); return smprintf(UNKNOWN_STR);
} }
@ -151,7 +158,7 @@ cpu_perc(void)
fp = fopen("/proc/stat","r"); fp = fopen("/proc/stat","r");
if (fp == NULL) { if (fp == NULL) {
fprintf(stderr, "Error opening stat file: %s\n", fprintf(foutput, "Error opening stat file: %s\n",
strerror(errno)); strerror(errno));
return smprintf(UNKNOWN_STR); return smprintf(UNKNOWN_STR);
} }
@ -181,7 +188,7 @@ disk_free(const char *mountpoint)
struct statvfs fs; struct statvfs fs;
if (statvfs(mountpoint, &fs) < 0) { if (statvfs(mountpoint, &fs) < 0) {
fprintf(stderr, "Could not get filesystem info: %s\n", fprintf(foutput, "Could not get filesystem info: %s\n",
strerror(errno)); strerror(errno));
return smprintf(UNKNOWN_STR); return smprintf(UNKNOWN_STR);
} }
@ -195,7 +202,7 @@ disk_perc(const char *mountpoint)
struct statvfs fs; struct statvfs fs;
if (statvfs(mountpoint, &fs) < 0) { if (statvfs(mountpoint, &fs) < 0) {
fprintf(stderr, "Could not get filesystem info: %s\n", fprintf(foutput, "Could not get filesystem info: %s\n",
strerror(errno)); strerror(errno));
return smprintf(UNKNOWN_STR); return smprintf(UNKNOWN_STR);
} }
@ -210,7 +217,7 @@ disk_total(const char *mountpoint)
struct statvfs fs; struct statvfs fs;
if (statvfs(mountpoint, &fs) < 0) { if (statvfs(mountpoint, &fs) < 0) {
fprintf(stderr, "Could not get filesystem info: %s\n", fprintf(foutput, "Could not get filesystem info: %s\n",
strerror(errno)); strerror(errno));
return smprintf(UNKNOWN_STR); return smprintf(UNKNOWN_STR);
} }
@ -224,7 +231,7 @@ disk_used(const char *mountpoint)
struct statvfs fs; struct statvfs fs;
if (statvfs(mountpoint, &fs) < 0) { if (statvfs(mountpoint, &fs) < 0) {
fprintf(stderr, "Could not get filesystem info: %s\n", fprintf(foutput, "Could not get filesystem info: %s\n",
strerror(errno)); strerror(errno));
return smprintf(UNKNOWN_STR); return smprintf(UNKNOWN_STR);
} }
@ -239,7 +246,7 @@ entropy(void)
FILE *fp = fopen("/proc/sys/kernel/random/entropy_avail", "r"); FILE *fp = fopen("/proc/sys/kernel/random/entropy_avail", "r");
if (fp == NULL) { if (fp == NULL) {
fprintf(stderr, "Could not open entropy file: %s\n", fprintf(foutput, "Could not open entropy file: %s\n",
strerror(errno)); strerror(errno));
return smprintf(UNKNOWN_STR); return smprintf(UNKNOWN_STR);
} }
@ -262,7 +269,7 @@ hostname(void)
FILE *fp = fopen("/proc/sys/kernel/hostname", "r"); FILE *fp = fopen("/proc/sys/kernel/hostname", "r");
if (fp == NULL) { if (fp == NULL) {
fprintf(stderr, "Could not open hostname file: %s\n", fprintf(foutput, "Could not open hostname file: %s\n",
strerror(errno)); strerror(errno));
return smprintf(UNKNOWN_STR); return smprintf(UNKNOWN_STR);
} }
@ -283,7 +290,7 @@ ip(const char *interface)
char host[NI_MAXHOST]; char host[NI_MAXHOST];
if (getifaddrs(&ifaddr) == -1) { if (getifaddrs(&ifaddr) == -1) {
fprintf(stderr, "Error getting IP address: %s\n", fprintf(foutput, "Error getting IP address: %s\n",
strerror(errno)); strerror(errno));
return smprintf(UNKNOWN_STR); return smprintf(UNKNOWN_STR);
} }
@ -298,7 +305,7 @@ ip(const char *interface)
if ((strcmp(ifa->ifa_name, interface) == 0) && (ifa->ifa_addr->sa_family == AF_INET)) { if ((strcmp(ifa->ifa_name, interface) == 0) && (ifa->ifa_addr->sa_family == AF_INET)) {
if (s != 0) { if (s != 0) {
fprintf(stderr, "Error getting IP address.\n"); fprintf(foutput, "Error getting IP address.\n");
return smprintf(UNKNOWN_STR); return smprintf(UNKNOWN_STR);
} }
return smprintf("%s", host); return smprintf("%s", host);
@ -317,7 +324,7 @@ load_avg(void)
double avgs[3]; double avgs[3];
if (getloadavg(avgs, 3) < 0) { if (getloadavg(avgs, 3) < 0) {
fprintf(stderr, "Error getting load avg.\n"); fprintf(foutput, "Error getting load avg.\n");
return smprintf(UNKNOWN_STR); return smprintf(UNKNOWN_STR);
} }
@ -331,7 +338,7 @@ ram_free(void)
FILE *fp = fopen("/proc/meminfo", "r"); FILE *fp = fopen("/proc/meminfo", "r");
if (fp == NULL) { if (fp == NULL) {
fprintf(stderr, "Error opening meminfo file: %s\n", fprintf(foutput, "Error opening meminfo file: %s\n",
strerror(errno)); strerror(errno));
return smprintf(UNKNOWN_STR); return smprintf(UNKNOWN_STR);
} }
@ -349,7 +356,7 @@ ram_perc(void)
FILE *fp = fopen("/proc/meminfo", "r"); FILE *fp = fopen("/proc/meminfo", "r");
if (fp == NULL) { if (fp == NULL) {
fprintf(stderr, "Error opening meminfo file: %s\n", fprintf(foutput, "Error opening meminfo file: %s\n",
strerror(errno)); strerror(errno));
return smprintf(UNKNOWN_STR); return smprintf(UNKNOWN_STR);
} }
@ -371,7 +378,7 @@ ram_total(void)
FILE *fp = fopen("/proc/meminfo", "r"); FILE *fp = fopen("/proc/meminfo", "r");
if (fp == NULL) { if (fp == NULL) {
fprintf(stderr, "Error opening meminfo file: %s\n", fprintf(foutput, "Error opening meminfo file: %s\n",
strerror(errno)); strerror(errno));
return smprintf(UNKNOWN_STR); return smprintf(UNKNOWN_STR);
} }
@ -388,7 +395,7 @@ ram_used(void)
FILE *fp = fopen("/proc/meminfo", "r"); FILE *fp = fopen("/proc/meminfo", "r");
if (fp == NULL) { if (fp == NULL) {
fprintf(stderr, "Error opening meminfo file: %s\n", fprintf(foutput, "Error opening meminfo file: %s\n",
strerror(errno)); strerror(errno));
return smprintf(UNKNOWN_STR); return smprintf(UNKNOWN_STR);
} }
@ -411,7 +418,7 @@ run_command(const char* command)
char buffer[64]; char buffer[64];
if (fp == NULL) { if (fp == NULL) {
fprintf(stderr, "Could not get command output for: %s: %s\n", fprintf(foutput, "Could not get command output for: %s: %s\n",
command, strerror(errno)); command, strerror(errno));
return smprintf(UNKNOWN_STR); return smprintf(UNKNOWN_STR);
} }
@ -436,7 +443,7 @@ temp(const char *file)
FILE *fp = fopen(file, "r"); FILE *fp = fopen(file, "r");
if (fp == NULL) { if (fp == NULL) {
fprintf(stderr, "Could not open temperature file: %s\n", fprintf(foutput, "Could not open temperature file: %s\n",
strerror(errno)); strerror(errno));
return smprintf(UNKNOWN_STR); return smprintf(UNKNOWN_STR);
} }
@ -469,7 +476,7 @@ username(void)
if (pw == NULL) if (pw == NULL)
return smprintf("%s", pw->pw_name); return smprintf("%s", pw->pw_name);
fprintf(stderr, "Could not get username: %s\n", fprintf(foutput, "Could not get username: %s\n",
strerror(errno)); strerror(errno));
return smprintf(UNKNOWN_STR); return smprintf(UNKNOWN_STR);
} }
@ -502,7 +509,7 @@ vol_perc(const char *soundcard)
snd_mixer_selem_id_malloc(&vol_info); snd_mixer_selem_id_malloc(&vol_info);
snd_mixer_selem_id_malloc(&mute_info); snd_mixer_selem_id_malloc(&mute_info);
if (vol_info == NULL || mute_info == NULL) { if (vol_info == NULL || mute_info == NULL) {
fprintf(stderr, "Could not get alsa volume.\n"); fprintf(foutput, "Could not get alsa volume.\n");
return smprintf(UNKNOWN_STR); return smprintf(UNKNOWN_STR);
} }
snd_mixer_selem_id_set_name(vol_info, ALSA_CHANNEL); snd_mixer_selem_id_set_name(vol_info, ALSA_CHANNEL);
@ -545,7 +552,7 @@ wifi_perc(const char *wificard)
fp = fopen(path, "r"); fp = fopen(path, "r");
if(fp == NULL) { if(fp == NULL) {
fprintf(stderr, "Error opening wifi operstate file: %s\n", fprintf(foutput, "Error opening wifi operstate file: %s\n",
strerror(errno)); strerror(errno));
return smprintf(UNKNOWN_STR); return smprintf(UNKNOWN_STR);
} }
@ -557,7 +564,7 @@ wifi_perc(const char *wificard)
fp = fopen("/proc/net/wireless", "r"); fp = fopen("/proc/net/wireless", "r");
if (fp == NULL) { if (fp == NULL) {
fprintf(stderr, "Error opening wireless file: %s\n", fprintf(foutput, "Error opening wireless file: %s\n",
strerror(errno)); strerror(errno));
return smprintf(UNKNOWN_STR); return smprintf(UNKNOWN_STR);
} }
@ -589,13 +596,13 @@ wifi_essid(const char *wificard)
wreq.u.essid.length = IW_ESSID_MAX_SIZE+1; wreq.u.essid.length = IW_ESSID_MAX_SIZE+1;
sprintf(wreq.ifr_name, wificard); sprintf(wreq.ifr_name, wificard);
if(sockfd == -1) { if(sockfd == -1) {
fprintf(stderr, "Cannot open socket for interface: %s: %s\n", fprintf(foutput, "Cannot open socket for interface: %s: %s\n",
wificard, strerror(errno)); wificard, strerror(errno));
return smprintf(UNKNOWN_STR); return smprintf(UNKNOWN_STR);
} }
wreq.u.essid.pointer = id; wreq.u.essid.pointer = id;
if (ioctl(sockfd,SIOCGIWESSID, &wreq) == -1) { if (ioctl(sockfd,SIOCGIWESSID, &wreq) == -1) {
fprintf(stderr, "Get ESSID ioctl failed for interface %s: %s\n", fprintf(foutput, "Get ESSID ioctl failed for interface %s: %s\n",
wificard, strerror(errno)); wificard, strerror(errno));
return smprintf(UNKNOWN_STR); return smprintf(UNKNOWN_STR);
} }
@ -606,16 +613,57 @@ wifi_essid(const char *wificard)
return smprintf("%s", (char *)wreq.u.essid.pointer); return smprintf("%s", (char *)wreq.u.essid.pointer);
} }
int void
main(void) usage(void)
{ {
fprintf(stderr, "usage: %s [-d] [-l path]\n", argv0);
exit(0);
}
int
main(int argc, char *argv[])
{
unsigned short int dflag, lflag;
size_t i; size_t i;
char status_string[4096]; char status_string[4096], logpath[4096];
char *res, *element; char *res, *element;
struct arg argument; struct arg argument;
foutput = stderr;
dpy = XOpenDisplay(0x0); dpy = XOpenDisplay(0x0);
ARGBEGIN {
case 'd':
dflag = 1;
break;
case 'l':
strlcpy(logpath, EARGF(usage()), sizeof(logpath)-1);
logpath[strlen(logpath)+1] = '\0';
foutput = fopen(logpath, "a");
if (foutput == NULL) {
fprintf(stderr, "failed to open log file at %s: %s\n",
logpath, strerror(errno));
return (1);
}
lflag = 1;
break;
default:
usage();
} ARGEND
if (dflag && !lflag) {
ccat(2, getenv("HOME"), "/.slstatus_log");
foutput = fopen(concat, "a");
if (foutput == NULL) {
fprintf(stderr, "failed to open log file at %s: %s\n",
logpath, strerror(errno));
return (1);
}
}
if (dflag)
daemon(0, 0);
for (;;) { for (;;) {
memset(status_string, 0, sizeof(status_string)); memset(status_string, 0, sizeof(status_string));
for (i = 0; i < sizeof(args) / sizeof(args[0]); ++i) { for (i = 0; i < sizeof(args) / sizeof(args[0]); ++i) {