73 lines
1.9 KiB
C
73 lines
1.9 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <sys/utsname.h>
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#include <unistd.h>
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#include <time.h>
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#include <stdarg.h>
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#include <string.h>
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#include "config.h"
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#include "defs.h"
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void die(int code, char *fmt, ...)
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{
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va_list args;
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va_start(args, fmt);
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vfprintf(stderr, fmt, args);
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va_end(args);
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exit(code);
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}
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void getuptime(char *buffer, int max_length)
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{
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struct timespec uptime;
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clock_gettime(CLOCK_BOOTTIME, &uptime);
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int days = uptime.tv_sec / 86400;
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int hours = uptime.tv_sec / 3600 % 24;
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int minutes = uptime.tv_sec / 60 % 60;
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int seconds = uptime.tv_sec % 60;
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if (uptime.tv_sec < 60)
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snprintf(buffer, max_length, "Up %d seconds", seconds);
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else if (uptime.tv_sec < 3600)
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snprintf(buffer, max_length, "Up %d minutes", minutes);
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else if (uptime.tv_sec < 86400)
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snprintf(buffer, max_length, "Up %d hours, %d minutes", hours, minutes);
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else
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snprintf(buffer, max_length, "Up %d days, %d hours, %d minutes", days, hours, minutes);
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}
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int main(int argc, char **argv)
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{
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char **art = NULL;
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if (argc > 2)
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{
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die(1, "usage: %s [artname]\n", argv[0]);
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}
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else if (argc == 2)
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{
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for (int i = 0; i < sizeof(arts)/sizeof(struct art_entry); ++i)
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if (!strcmp(arts[i].name, argv[1])) { art = arts[i].art; break; }
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if (!art) die(1, "Art %s not found\n", argv[1]);
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} else
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{
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art = arts[0].art;
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}
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struct utsname uname_buf;
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char hostname[max_hostname_length];
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char username[max_username_length];
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char uptime[max_uptime_length];
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gethostname(hostname, max_hostname_length);
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getlogin_r(username, max_username_length);
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getuptime(uptime, max_uptime_length);
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uname(&uname_buf);
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printf("%s %s@%s\n", art[0], username, hostname);
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printf("%s --\n", art[1]);
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printf("%s %s %s\n", art[2], uname_buf.sysname, uname_buf.release);
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printf("%s %s\n", art[3], uptime);
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return 0;
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}
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