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Merge branch '207-nslookup-takes-2-argvs-w-o-errors-uses-only-1st-and-last' into 'master'

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Resolve "nslookup takes >2 argvs w/o errors, uses only 1st and last"

Closes #207

See merge request isc-projects/bind9!1382
This commit is contained in:
Mark Andrews
2019-02-07 04:07:33 -05:00
parent acfbf1ae94 f73816ff0f
commit 5847318ab1
2 changed files with 23 additions and 0 deletions
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3
CHANGES
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@@ -1,3 +1,6 @@
5157. [bug] Nslookup now errors out if there are extra command
line arguments. [GL #207]
--- 9.13.6 released ---
5156. [doc] Extended and refined the section of the ARM describing

20
bin/dig/nslookup.c
View File

@@ -879,6 +879,23 @@ get_next_command(void) {
isc_mem_free(mctx, buf);
}
ISC_PLATFORM_NORETURN_PRE static void
usage(void) ISC_PLATFORM_NORETURN_POST;
static void
usage(void) {
fprintf(stderr, "Usage:\n");
fprintf(stderr,
" nslookup [-opt ...] # interactive mode using default server\n");
fprintf(stderr,
" nslookup [-opt ...] - server # interactive mode using 'server'\n");
fprintf(stderr,
" nslookup [-opt ...] host # just look up 'host' using default server\n");
fprintf(stderr,
" nslookup [-opt ...] host server # just look up 'host' using 'server'\n");
exit(1);
}
static void
parse_args(int argc, char **argv) {
bool have_lookup = false;
@@ -900,6 +917,9 @@ parse_args(int argc, char **argv) {
in_use = true;
addlookup(argv[0]);
} else {
if (argv[1] != NULL) {
usage();
}
set_nameserver(argv[0]);
check_ra = false;
}