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This commit is contained in:
Lorenz Kästle 2025-02-22 22:14:17 +01:00
parent 4173d724a4
commit 665e2f9130
1 changed files with 25 additions and 13 deletions
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38
plugins/check_ssh.c
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@ -64,8 +64,9 @@ int main(int argc, char **argv) {
/* Parse extra opts if any */
argv = np_extra_opts(&argc, argv, progname);
if (process_arguments(argc, argv) == ERROR)
if (process_arguments(argc, argv) == ERROR) {
usage4(_("Could not parse arguments"));
}
/* initialize alarm signal handling */
signal(SIGALRM, socket_timeout_alarm_handler);
@ -95,20 +96,24 @@ int process_arguments(int argc, char **argv) {
{"remote-protocol", required_argument, 0, 'P'},
{0, 0, 0, 0}};
if (argc < 2)
if (argc < 2) {
return ERROR;
}
for (int i = 1; i < argc; i++)
if (strcmp("-to", argv[i]) == 0)
for (int i = 1; i < argc; i++) {
if (strcmp("-to", argv[i]) == 0) {
strcpy(argv[i], "-t");
}
}
int option_char;
while (true) {
int option = 0;
option_char = getopt_long(argc, argv, "+Vhv46t:r:H:p:P:", longopts, &option);
if (option_char == -1 || option_char == EOF)
if (option_char == -1 || option_char == EOF) {
break;
}
switch (option_char) {
case '?': /* help */
@ -123,10 +128,11 @@ int process_arguments(int argc, char **argv) {
verbose = true;
break;
case 't': /* timeout period */
if (!is_integer(optarg))
if (!is_integer(optarg)) {
usage2(_("Timeout interval must be a positive integer"), optarg);
else
} else {
socket_timeout = atoi(optarg);
}
break;
case '4':
address_family = AF_INET;
@ -145,8 +151,9 @@ int process_arguments(int argc, char **argv) {
remote_protocol = optarg;
break;
case 'H': /* host */
if (!is_host(optarg))
if (!is_host(optarg)) {
usage2(_("Invalid hostname/address"), optarg);
}
server_name = optarg;
break;
case 'p': /* port */
@ -178,10 +185,12 @@ int process_arguments(int argc, char **argv) {
}
int validate_arguments(void) {
if (server_name == NULL)
if (server_name == NULL) {
return ERROR;
if (port == -1) /* funky, but allows -p to override stray integer in args */
}
if (port == -1) { /* funky, but allows -p to override stray integer in args */
port = SSH_DFL_PORT;
}
return OK;
}
@ -198,8 +207,9 @@ int ssh_connect(char *haddr, int hport, char *remote_version, char *remote_proto
int socket;
int result = my_tcp_connect(haddr, hport, &socket);
if (result != STATE_OK)
if (result != STATE_OK) {
return result;
}
char *output = (char *)calloc(BUFF_SZ + 1, sizeof(char));
char *buffer = NULL;
@ -259,8 +269,9 @@ int ssh_connect(char *haddr, int hport, char *remote_version, char *remote_proto
* - RFC 4253:4.2
*/
strip(version_control_string);
if (verbose)
if (verbose) {
printf("%s\n", version_control_string);
}
char *ssh_proto = version_control_string + 4;
@ -297,8 +308,9 @@ int ssh_connect(char *haddr, int hport, char *remote_version, char *remote_proto
static char *rev_no = VERSION;
xasprintf(&buffer, "SSH-%s-check_ssh_%s\r\n", ssh_proto, rev_no);
send(socket, buffer, strlen(buffer), MSG_DONTWAIT);
if (verbose)
if (verbose) {
printf("%s\n", buffer);
}
if (remote_version && strcmp(remote_version, ssh_server)) {
printf(_("SSH CRITICAL - %s (protocol %s) version mismatch, expected '%s'\n"), ssh_server, ssh_proto, remote_version);