void logger_init()
{
Logger *l = &logger;
l->fname = get_logdir();
l->fd = open(l->fname, O_CREAT | O_APPEND | O_WRONLY, 0777);
if (l->fd < 0)
{
fprintf(stderr, "could not open logger fh: %s", strerror(errno));
exit(1);
}
logger_log("logger initialized");
}
int usage(const int retval)
{
char *logdir;
if (retval != EXIT_SUCCESS) {
fprintf(stderr, "\nType \"%s --help\" for help screen. "
"Returning with value %d.\n",
progname, retval);
return retval;
}
logdir = get_logdir(NULL);
puts("");
if (verbose_level(0) >= 1) {
print_version();
puts("");
}
printf("Usage: %s [options]\n", progname);
printf("\n");
printf("Generates one or more UUIDs and stores it to a log file with "
"optional \n"
"comment or tag/category.\n");
printf("\n");
printf("Options:\n");
printf("\n");
printf(" -c x, --comment x\n"
" Store comment x in the log file. If \"-\" is specified as "
"comment, the \n"
" program will read the comment from stdin. Two hyphens "
"(\"--\") as a \n"
" comment opens the editor defined in the environment "
"variable \n"
" %s to edit the message. If %s is "
"not defined, \n"
" EDITOR is read, if not defined, \"%s\" is called, it "
"should exist \n"
" everywhere. It may not, but it should.\n",
ENV_EDITOR, ENV_EDITOR, STD_EDITOR);
printf(" -h, --help\n"
" Show this help.\n");
printf(" --license\n"
" Print the software license.\n");
printf(" -l x, --logdir x\n"
" Store log files in directory x.\n"
" If the %s environment variable is defined, "
"that value is \n"
" used. Otherwise the value \"$HOME/uuids\" is used.\n"
" Current default: %s\n", ENV_LOGDIR, logdir);
printf(" -m, --random-mac\n"
" Don't use the hardware MAC address, generate a random "
"address field.\n");
printf(" -n x, --count x\n"
" Print and store x UUIDs.\n");
printf(" -q, --quiet\n"
" Be more quiet. Can be repeated to increase silence.\n");
printf(" --raw\n"
" Don't convert <txt> element to XML. When using this "
"option, it is \n"
" expected that the value of the -c/--comment option is "
"valid XML, \n"
" otherwise it will create corrupted log files.\n");
printf(" --rcfile X\n"
" Use file X instead of '%s/%s'.\n",
getenv("HOME"), STD_RCFILE);
printf(" --self-test\n"
" Run various internal self tests and exit.\n");
printf(" -t x, --tag x\n"
" Use x as tag (category).\n");
printf(" -v, --verbose\n"
" Increase level of verbosity. Can be repeated.\n");
printf(" --version\n"
" Print version information.\n");
printf(" -w x, --whereto x\n"
" x is a string which decides where the UUID will be "
"written:\n"
" The string contains 'e' - stderr\n"
" The string contains 'o' - stdout\n"
" All other characters will be ignored. Examples:\n"
" e\n"
" Send to stderr.\n"
" eo\n"
" Send to both stdout and stderr.\n"
" a\n"
" Synonym for eo.\n"
" n\n"
" Don't output anything.\n"
" Default: \"o\"\n");
printf("\n");
printf("If the %s environment variable is defined by "
"sess(1) or another \n"
"program, the value is logged if it is an UUID.\n", ENV_SESS);
printf("\n");
printf("A different hostname can be specified in the environment "
"variable \n"
"%s, or in the rc file %s/%s with the format \n"
"\"hostname = xxx\".\n",
ENV_HOSTNAME, getenv("HOME"), STD_RCFILE);
printf("To use a specific MAC address all the time, add it to the rc "
"file using \n"
"the format \"macaddr = xxxxxxxxxxxx\".\n");
printf("\n");
free(logdir);
return retval;
}
