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-rw-r--r--toys/pending/logger.c119
1 files changed, 119 insertions, 0 deletions
diff --git a/toys/pending/logger.c b/toys/pending/logger.c
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+++ b/toys/pending/logger.c
@@ -0,0 +1,119 @@
+/* logger.c - Log messages.
+ *
+ * Copyright 2013 Ilya Kuzmich <ilya.kuzmich@gmail.com>
+ *
+ * See http://pubs.opengroup.org/onlinepubs/9699919799/utilities/logger.html
+
+USE_LOGGER(NEWTOY(logger, "st:p:", TOYFLAG_USR|TOYFLAG_BIN))
+
+config LOGGER
+ bool "logger"
+ default n
+ help
+ usage: hello [-s] [-t tag] [-p [facility.]priority] [message]
+
+ Log message (or stdin) to syslog.
+*/
+
+#define FOR_logger
+#include "toys.h"
+#include <syslog.h>
+#include <strings.h>
+#include <string.h>
+
+GLOBALS(
+ char *priority_arg;
+ char *ident;
+
+ int facility;
+ int priority;
+)
+
+struct mapping {
+ const char *key;
+ int value;
+};
+
+static const struct mapping facilities[] = {
+ {"user", LOG_USER}, {"main", LOG_MAIL}, {"news", LOG_NEWS},
+ {"uucp", LOG_UUCP}, {"daemon", LOG_DAEMON}, {"auth", LOG_AUTH},
+ {"cron", LOG_CRON}, {"lpr", LOG_LPR}, {"local0", LOG_LOCAL0},
+ {"local1", LOG_LOCAL1}, {"local2", LOG_LOCAL2}, {"local3", LOG_LOCAL3},
+ {"local4", LOG_LOCAL4}, {"local5", LOG_LOCAL5}, {"local6", LOG_LOCAL6},
+ {"local7", LOG_LOCAL7},
+ {NULL, 0}
+};
+
+static const struct mapping priorities[] = {
+ {"emerg", LOG_EMERG}, {"alert", LOG_ALERT}, {"crit", LOG_CRIT},
+ {"err", LOG_ERR}, {"warning", LOG_WARNING}, {"notice", LOG_NOTICE},
+ {"info", LOG_INFO}, {"debug", LOG_DEBUG},
+ {NULL, 0}
+};
+
+static int lookup(const struct mapping *where, const char *key)
+{
+ int i;
+ for (i = 0; where[i].key; i++)
+ if (!strcasecmp(key, where[i].key))
+ return where[i].value;
+
+ return -1;
+}
+
+static void parse_priority()
+{
+ char *sep = strchr(TT.priority_arg, '.');
+
+ if (sep)
+ {
+ *sep = '\0';
+ if ((TT.facility = lookup(facilities, TT.priority_arg)) == -1)
+ error_exit("bad facility: %s", TT.priority_arg);
+ TT.priority_arg = sep+1;
+ }
+
+ if ((TT.priority = lookup(priorities, TT.priority_arg)) == -1)
+ error_exit("bad priority: %s", TT.priority_arg);
+}
+
+void logger_main(void)
+{
+ if (toys.optflags & FLAG_p)
+ parse_priority();
+ else
+ {
+ TT.facility = LOG_USER;
+ TT.priority = LOG_NOTICE;
+ }
+
+ if (!(toys.optflags & FLAG_t))
+ {
+ struct passwd *pw = getpwuid(geteuid());
+ if (!pw)
+ perror_exit("getpwuid");
+ TT.ident = xstrdup(pw->pw_name);
+ }
+
+ char *message = NULL;
+ if (toys.optc) {
+ int length = 0;
+ int pos = 0;
+
+ for (;*toys.optargs; (void) *(toys.optargs)++) // shut up gcc
+ {
+ length += strlen(*(toys.optargs)) + 1; // plus one for the args spacing
+ message = xrealloc(message, length + 1); // another one for the null byte
+
+ sprintf(message + pos, "%s ", *toys.optargs);
+ pos = length;
+ }
+ } else {
+ toybuf[readall(0, toybuf, 4096-1)] = '\0';
+ message = toybuf;
+ }
+
+ openlog(TT.ident, (toys.optflags & FLAG_s ? LOG_PERROR : 0) , TT.facility);
+ syslog(TT.priority, "%s", message);
+ closelog();
+}