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Diffstat (limited to 'plugins/check_dig.c')
-rw-r--r--plugins/check_dig.c168
1 files changed, 69 insertions, 99 deletions
diff --git a/plugins/check_dig.c b/plugins/check_dig.c
index 4394490e..bc4dcd5c 100644
--- a/plugins/check_dig.c
+++ b/plugins/check_dig.c
@@ -18,6 +18,12 @@
*****************************************************************************/
+/* Hackers note:
+ * There are typecasts to (char *) from _("foo bar") in this file.
+ * They prevent compiler warnings. Never (ever), permute strings obtained
+ * that are typecast from (const char *) (which happens when --disable-nls)
+ * because on some architectures those strings are in non-writable memory */
+
const char *progname = "check_dig";
const char *revision = "$Revision$";
const char *copyright = "2002-2004";
@@ -26,17 +32,15 @@ const char *email = "nagiosplug-devel@lists.sourceforge.net";
#include "common.h"
#include "netutils.h"
#include "utils.h"
-#include "popen.h"
+#include "runcmd.h"
int process_arguments (int, char **);
int validate_arguments (void);
void print_help (void);
void print_usage (void);
-enum {
- UNDEFINED = 0,
- DEFAULT_PORT = 53
-};
+#define UNDEFINED 0
+#define DEFAULT_PORT 53
char *query_address = NULL;
char *record_type = "A";
@@ -51,26 +55,25 @@ struct timeval tv;
int
main (int argc, char **argv)
{
- char input_buffer[MAX_INPUT_BUFFER];
char *command_line;
- char *output;
+ output chld_out, chld_err;
+ char *msg = NULL;
+ size_t i;
char *t;
long microsec;
double elapsed_time;
int result = STATE_UNKNOWN;
- output = strdup ("");
-
setlocale (LC_ALL, "");
bindtextdomain (PACKAGE, LOCALEDIR);
textdomain (PACKAGE);
/* Set signal handling and alarm */
if (signal (SIGALRM, popen_timeout_alarm_handler) == SIG_ERR)
- usage4 (_("Cannot catch SIGALRM"));
+ usage_va(_("Cannot catch SIGALRM"));
if (process_arguments (argc, argv) == ERROR)
- usage4 (_("Could not parse arguments"));
+ usage_va(_("Could not parse arguments"));
/* get the command to run */
asprintf (&command_line, "%s @%s -p %d %s -t %s",
@@ -89,100 +92,75 @@ main (int argc, char **argv)
}
/* run the command */
- child_process = spopen (command_line);
- if (child_process == NULL) {
- printf (_("Could not open pipe: %s\n"), command_line);
- return STATE_UNKNOWN;
+ if(np_runcmd(command_line, &chld_out, &chld_err, 0) != 0) {
+ result = STATE_WARNING;
+ msg = (char *)_("dig returned an error status");
}
- child_stderr = fdopen (child_stderr_array[fileno (child_process)], "r");
- if (child_stderr == NULL)
- printf (_("Could not open stderr for %s\n"), command_line);
-
- while (fgets (input_buffer, MAX_INPUT_BUFFER - 1, child_process)) {
-
+ for(i = 0; i < chld_out.lines; i++) {
/* the server is responding, we just got the host name... */
- if (strstr (input_buffer, ";; ANSWER SECTION:")) {
+ if (strstr (chld_out.line[i], ";; ANSWER SECTION:")) {
/* loop through the whole 'ANSWER SECTION' */
- do {
+ for(; i < chld_out.lines; i++) {
/* get the host address */
- if (!fgets (input_buffer, MAX_INPUT_BUFFER - 1, child_process))
- break;
-
- if (strpbrk (input_buffer, "\r\n"))
- input_buffer[strcspn (input_buffer, "\r\n")] = '\0';
+ if (verbose)
+ printf ("%s\n", chld_out.line[i]);
- if (verbose && !strstr (input_buffer, ";; "))
- printf ("%s\n", input_buffer);
-
- if (expected_address==NULL && strstr (input_buffer, query_address) != NULL) {
- output = strdup(input_buffer);
+ if (strstr (chld_out.line[i], (expected_address == NULL ? query_address : expected_address)) != NULL) {
+ msg = chld_out.line[i];
result = STATE_OK;
- }
- else if (expected_address != NULL && strstr (input_buffer, expected_address) != NULL) {
- output = strdup(input_buffer);
- result = STATE_OK;
- }
-
- /* Translate output TAB -> SPACE */
- t = output;
- while ((t = index(t, '\t')) != NULL)
- *t = ' ';
- } while (!strstr (input_buffer, ";; "));
+ /* Translate output TAB -> SPACE */
+ t = msg;
+ while ((t = strchr(t, '\t')) != NULL) *t = ' ';
+ break;
+ }
+ }
if (result == STATE_UNKNOWN) {
- asprintf (&output, _("Server not found in ANSWER SECTION"));
- result = STATE_WARNING;
- }
- }
-
- }
-
- if (result == STATE_UNKNOWN) {
- asprintf (&output, _("No ANSWER SECTION found"));
- }
+ msg = (char *)_("Server not found in ANSWER SECTION");
+ result = STATE_WARNING;
+ }
- while (fgets (input_buffer, MAX_INPUT_BUFFER - 1, child_stderr)) {
- /* If we get anything on STDERR, at least set warning */
- result = max_state (result, STATE_WARNING);
- printf ("%s", input_buffer);
- if (strlen (output) == 0)
- output = strdup (1 + index (input_buffer, ':'));
+ /* we found the answer section, so break out of the loop */
+ break;
+ }
}
- (void) fclose (child_stderr);
-
- /* close the pipe */
- if (spclose (child_process)) {
- result = max_state (result, STATE_WARNING);
- if (strlen (output) == 0)
- asprintf (&output, _("dig returned an error status"));
+ if (result == STATE_UNKNOWN)
+ msg = (char *)_("No ANSWER SECTION found");
+
+ /* If we get anything on STDERR, at least set warning */
+ if(chld_err.buflen > 0) {
+ result = max_state(result, STATE_WARNING);
+ if(!msg) for(i = 0; i < chld_err.lines; i++) {
+ msg = strchr(chld_err.line[0], ':');
+ if(msg) {
+ msg++;
+ break;
+ }
+ }
}
microsec = deltime (tv);
elapsed_time = (double)microsec / 1.0e6;
- if (output == NULL || strlen (output) == 0)
- asprintf (&output, _(" Probably a non-existent host/domain"));
-
if (critical_interval > UNDEFINED && elapsed_time > critical_interval)
result = STATE_CRITICAL;
else if (warning_interval > UNDEFINED && elapsed_time > warning_interval)
result = STATE_WARNING;
- asprintf (&output, _("%.3f seconds response time (%s)"), elapsed_time, output);
-
- printf ("DNS %s - %s|%s\n",
- state_text (result), output,
+ printf ("DNS %s - %.3f seconds response time (%s)|%s\n",
+ state_text (result), elapsed_time,
+ msg ? msg : _("Probably a non-existent host/domain"),
fperfdata("time", elapsed_time, "s",
- (warning_interval>UNDEFINED?TRUE:FALSE),
- warning_interval,
- (critical_interval>UNDEFINED?TRUE:FALSE),
- critical_interval,
- TRUE, 0, FALSE, 0));
+ (warning_interval>UNDEFINED?TRUE:FALSE),
+ warning_interval,
+ (critical_interval>UNDEFINED?TRUE:FALSE),
+ critical_interval,
+ TRUE, 0, FALSE, 0));
return result;
}
@@ -219,8 +197,6 @@ process_arguments (int argc, char **argv)
break;
switch (c) {
- case '?': /* help */
- usage2 (_("Unknown argument"), optarg);
case 'h': /* help */
print_help ();
exit (STATE_OK);
@@ -228,19 +204,15 @@ process_arguments (int argc, char **argv)
print_revision (progname, revision);
exit (STATE_OK);
case 'H': /* hostname */
- if (is_host (optarg)) {
- dns_server = optarg;
- }
- else {
- usage2 (_("Invalid hostname/address"), optarg);
- }
+ host_or_die(optarg);
+ dns_server = optarg;
break;
case 'p': /* server port */
if (is_intpos (optarg)) {
server_port = atoi (optarg);
}
else {
- usage2 (_("Port must be a positive integer"), optarg);
+ usage_va(_("Port must be a positive integer - %s"), optarg);
}
break;
case 'l': /* address to lookup */
@@ -251,7 +223,7 @@ process_arguments (int argc, char **argv)
warning_interval = strtod (optarg, NULL);
}
else {
- usage2 (_("Warning interval must be a positive integer"), optarg);
+ usage_va(_("Warning interval must be a positive integer - %s"), optarg);
}
break;
case 'c': /* critical */
@@ -259,7 +231,7 @@ process_arguments (int argc, char **argv)
critical_interval = strtod (optarg, NULL);
}
else {
- usage2 (_("Critical interval must be a positive integer"), optarg);
+ usage_va(_("Critical interval must be a positive integer - %s"), optarg);
}
break;
case 't': /* timeout */
@@ -267,7 +239,7 @@ process_arguments (int argc, char **argv)
timeout_interval = atoi (optarg);
}
else {
- usage2 (_("Timeout interval must be a positive integer"), optarg);
+ usage_va(_("Timeout interval must be a positive integer - %s"), optarg);
}
break;
case 'v': /* verbose */
@@ -279,18 +251,16 @@ process_arguments (int argc, char **argv)
case 'a':
expected_address = optarg;
break;
+ default: /* usage_va */
+ usage_va(_("Unknown argument - %s"), optarg);
}
}
c = optind;
if (dns_server == NULL) {
if (c < argc) {
- if (is_host (argv[c])) {
- dns_server = argv[c];
- }
- else {
- usage2 (_("Invalid hostname/address"), argv[c]);
- }
+ host_or_die(argv[c]);
+ dns_server = argv[c];
}
else {
dns_server = strdup ("127.0.0.1");
@@ -359,6 +329,6 @@ print_usage (void)
{
printf ("\
Usage: %s -H host -l lookup [-p <server port>] [-T <query type>]\n\
- [-w <warning interval>] [-c <critical interval>] [-t <timeout>]\n\
- [-a <expected answer address>] [-v]\n", progname);
+ [-w <warning interval>] [-c <critical interval>] [-t <timeout>]\n\
+ [-a <expected answer address>] [-v]\n", progname);
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-25 09:12:16 +0000