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-rw-r--r--src/regress/ttyname/check_ttyname.c122
1 files changed, 122 insertions, 0 deletions
diff --git a/src/regress/ttyname/check_ttyname.c b/src/regress/ttyname/check_ttyname.c
new file mode 100644
index 0000000..7efcd06
--- /dev/null
+++ b/src/regress/ttyname/check_ttyname.c
@@ -0,0 +1,122 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2013-2020, 2022 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <config.h>
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <stdio.h>
+#ifdef HAVE_STDBOOL_H
+# include <stdbool.h>
+#else
+# include "compat/stdbool.h"
+#endif /* HAVE_STDBOOL_H */
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <limits.h>
+#include <errno.h>
+
+#include "sudo_compat.h"
+#include "sudo_fatal.h"
+#include "sudo_util.h"
+#include "sudo_debug.h"
+
+sudo_dso_public int main(int argc, char *argv[]);
+
+int sudo_debug_instance = SUDO_DEBUG_INSTANCE_INITIALIZER;
+extern char *get_process_ttyname(char *name, size_t namelen);
+
+static int
+match_ttys(const char *tty1, const char *tty2)
+{
+ struct stat sb1, sb2;
+
+ if (tty1 != NULL && tty2 != NULL) {
+ if (strcmp(tty1, tty2) == 0)
+ return 0;
+ /* Could be the same device with a different name. */
+ if (stat(tty1, &sb1) == 0 && S_ISCHR(sb1.st_mode) &&
+ stat(tty2, &sb2) == 0 && S_ISCHR(sb2.st_mode)) {
+ if (sb1.st_rdev == sb2.st_rdev)
+ return 0;
+ }
+ } else if (tty1 == NULL && tty2 == NULL) {
+ return 0;
+ }
+
+ return 1;
+}
+
+int
+main(int argc, char *argv[])
+{
+ char *tty_libc = NULL, *tty_sudo = NULL;
+ char pathbuf[PATH_MAX];
+ bool verbose = false;
+ int ch, errors = 0, ntests = 1;
+
+ initprogname(argc > 0 ? argv[0] : "check_ttyname");
+
+ while ((ch = getopt(argc, argv, "v")) != -1) {
+ switch (ch) {
+ case 'v':
+ verbose = true;
+ break;
+ default:
+ fprintf(stderr, "usage: %s [-v]\n", getprogname());
+ return EXIT_FAILURE;
+ }
+ }
+
+ /* Lookup tty name using kernel info if possible. */
+ if (get_process_ttyname(pathbuf, sizeof(pathbuf)) != NULL)
+ tty_sudo = pathbuf;
+
+#if defined(HAVE_KINFO_PROC2_NETBSD) || \
+ defined(HAVE_KINFO_PROC_OPENBSD) || \
+ defined(HAVE_KINFO_PROC_FREEBSD) || \
+ defined(HAVE_KINFO_PROC_DFLY) || \
+ defined(HAVE_KINFO_PROC_44BSD) || \
+ defined(HAVE__TTYNAME_DEV) || defined(HAVE_STRUCT_PSINFO_PR_TTYDEV) || \
+ defined(HAVE_PSTAT_GETPROC) || defined(__linux__)
+
+ /* Lookup tty name attached to stdin via libc. */
+ tty_libc = ttyname(STDIN_FILENO);
+#endif
+
+ /* Compare libc and kernel ttys. */
+ if (match_ttys(tty_libc, tty_sudo) == 0) {
+ if (verbose)
+ printf("%s: OK (%s)\n", getprogname(), tty_sudo ? tty_sudo : "none");
+ } else if (tty_libc == NULL) {
+ if (verbose)
+ printf("%s: SKIP (%s)\n", getprogname(), tty_sudo ? tty_sudo : "none");
+ ntests = 0;
+ } else {
+ printf("%s: FAIL %s (sudo) vs. %s (libc)\n", getprogname(),
+ tty_sudo ? tty_sudo : "none", tty_libc ? tty_libc : "none");
+ errors++;
+ }
+
+ if (ntests != 0) {
+ printf("%s: %d tests run, %d errors, %d%% success rate\n",
+ getprogname(), ntests, errors, (ntests - errors) * 100 / ntests);
+ }
+ return errors;
+}