1 /* logger.c - Log messages. 2 * 3 * Copyright 2013 Ilya Kuzmich <ilya.kuzmich (at) gmail.com> 4 * 5 * See http://pubs.opengroup.org/onlinepubs/9699919799/utilities/logger.html 6 7 USE_LOGGER(NEWTOY(logger, "st:p:", TOYFLAG_USR|TOYFLAG_BIN)) 8 9 config LOGGER 10 bool "logger" 11 depends on SYSLOGD 12 default n 13 help 14 usage: logger [-s] [-t tag] [-p [facility.]priority] [message] 15 16 Log message (or stdin) to syslog. 17 */ 18 19 #define FOR_logger 20 #include "toys.h" 21 22 GLOBALS( 23 char *priority_arg; 24 char *ident; 25 ) 26 27 extern int logger_lookup(int where, char *key); 28 29 void logger_main(void) 30 { 31 int facility = LOG_USER, priority = LOG_NOTICE; 32 char *message = NULL; 33 34 if (toys.optflags & FLAG_p) { 35 char *sep = strchr(TT.priority_arg, '.'); 36 37 if (sep) { 38 *sep = '\0'; 39 if ((facility = logger_lookup(0, TT.priority_arg)) == -1) 40 error_exit("bad facility: %s", TT.priority_arg); 41 TT.priority_arg = sep+1; 42 } 43 44 if ((priority = logger_lookup(1, TT.priority_arg)) == -1) 45 error_exit("bad priority: %s", TT.priority_arg); 46 } 47 48 if (!(toys.optflags & FLAG_t)) { 49 struct passwd *pw = getpwuid(geteuid()); 50 51 if (!pw) perror_exit("getpwuid"); 52 TT.ident = xstrdup(pw->pw_name); 53 } 54 55 if (toys.optc) { 56 int length = 0, pos = 0; 57 58 for (;*toys.optargs; toys.optargs++) { 59 length += strlen(*(toys.optargs)) + 1; // plus one for the args spacing 60 message = xrealloc(message, length + 1); // another one for the null byte 61 62 sprintf(message + pos, "%s ", *toys.optargs); 63 pos = length; 64 } 65 } else { 66 toybuf[readall(0, toybuf, 4096-1)] = '\0'; 67 message = toybuf; 68 } 69 70 openlog(TT.ident, (toys.optflags & FLAG_s ? LOG_PERROR : 0) , facility); 71 syslog(priority, "%s", message); 72 closelog(); 73 } 74
