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/* $Id$
**
** The client program for the wallet system.
**
** Written by Russ Allbery <rra@stanford.edu>
** Copyright 2006 Board of Trustees, Leland Stanford Jr. University
**
** See README for licensing terms.
*/
#include <config.h>
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <unistd.h>
#include <remctl.h>
/* Temporary until we have some real configuration. */
#ifndef SERVER
# define SERVER "wallet.stanford.edu"
#endif
#ifndef PORT
# define PORT 4444
#endif
/* Usage message. */
static const char usage_message[] = "\
Usage: wallet (get|show) keytab <name>\n\
\n\
Options:\n\
-h Display this help\n\
-v Display the version of remctl\n";
/*
** Display the usage message for remctl.
*/
static void
usage(int status)
{
fprintf((status == 0) ? stdout : stderr, "%s", usage_message);
exit(status);
}
/*
** Main routine. Parse the arguments and then perform the desired
** operation.
*/
int
main(int argc, char *argv[])
{
int option, fd;
ssize_t status;
const char *command[3];
struct remctl_result *result;
while ((option = getopt(argc, argv, "hv")) != EOF) {
switch (option) {
case 'h':
usage(0);
break;
case 'v':
printf("%s\n", PACKAGE_STRING);
exit(0);
break;
default:
usage(1);
break;
}
}
argc -= optind;
argv += optind;
if (argc != 3)
usage(1);
if (strcmp(argv[1], "keytab") != 0)
usage(1);
/* Perform the desired operation based on the first argument. */
if (strcmp(argv[0], "get") == 0) {
command[0] = "get";
} else if (strcmp(argv[0], "show") == 0) {
command[0] = "show";
}
command[1] = "keytab";
command[2] = argv[2];
result = remctl(SERVER, PORT, NULL, command);
/* Display the results. */
if (result->error != NULL) {
fprintf(stderr, "%s\n", result->error);
} else if (result->stderr_len > 0) {
fwrite(result->stderr_buf, 1, result->stderr_len, stderr);
} else {
fd = open("keytab", O_WRONLY | O_CREAT | O_TRUNC, 0600);
if (fd < 0) {
fprintf(stderr, "open of keytab failed: %s", strerror(errno));
exit(1);
}
status = write(fd, result->stdout_buf, result->stdout_len);
if (status < 0) {
fprintf(stderr, "write to keytab failed: %s", strerror(errno));
exit(1);
} else if (status != result->stdout_len) {
fprintf(stderr, "write to keytab truncated");
exit(1);
}
if (close(fd) < 0) {
fprintf(stderr, "close of keytab failed: %s", strerror(errno));
exit(1);
}
}
exit(result->status);
}
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