Module: monitoring-plugins
Branch: master
Commit: 2757550558d509aa5c95d8834ee76d803e110161
Author: Lorenz Kästle <[email protected]>
Date: Fri Aug 1 14:35:23 2025 +0200
URL:
https://www.monitoring-plugins.org/repositories/monitoring-plugins/commit/?id=27575505
clang-format
---
plugins/check_ssh.c | 72 ++++++++++++++++++++++++++++++++---------------------
1 file changed, 43 insertions(+), 29 deletions(-)
diff --git a/plugins/check_ssh.c b/plugins/check_ssh.c
index b4a98cdf..f6c8d551 100644
--- a/plugins/check_ssh.c
+++ b/plugins/check_ssh.c
@@ -57,7 +57,8 @@ static process_arguments_wrapper process_arguments(int
/*argc*/, char ** /*argv*
static void print_help(void);
void print_usage(void);
-static int ssh_connect(mp_check *overall, char *haddr, int hport, char
*remote_version, char *remote_protocol);
+static int ssh_connect(mp_check *overall, char *haddr, int hport, char
*remote_version,
+ char *remote_protocol);
int main(int argc, char **argv) {
setlocale(LC_ALL, "");
@@ -85,7 +86,8 @@ int main(int argc, char **argv) {
alarm(socket_timeout);
/* ssh_connect exits if error is found */
- ssh_connect(&overall, config.server_name, config.port,
config.remote_version, config.remote_protocol);
+ ssh_connect(&overall, config.server_name, config.port,
config.remote_version,
+ config.remote_protocol);
alarm(0);
@@ -96,19 +98,20 @@ int main(int argc, char **argv) {
/* process command-line arguments */
process_arguments_wrapper process_arguments(int argc, char **argv) {
- static struct option longopts[] = {{"help", no_argument, 0, 'h'},
-
{"version", no_argument, 0, 'V'},
-
{"host", required_argument, 0, 'H'}, /* backward compatibility */
-
{"hostname", required_argument, 0, 'H'},
-
{"port", required_argument, 0, 'p'},
-
{"use-ipv4", no_argument, 0, '4'},
-
{"use-ipv6", no_argument, 0, '6'},
-
{"timeout", required_argument, 0, 't'},
-
{"verbose", no_argument, 0, 'v'},
-
{"remote-version", required_argument, 0, 'r'},
-
{"remote-protocol", required_argument, 0, 'P'},
-
{"output-format", required_argument, 0, output_format_index},
- {0,
0, 0, 0}};
+ static struct option longopts[] = {
+ {"help", no_argument, 0, 'h'},
+ {"version", no_argument, 0, 'V'},
+ {"host", required_argument, 0, 'H'}, /* backward compatibility
*/
+ {"hostname", required_argument, 0, 'H'},
+ {"port", required_argument, 0, 'p'},
+ {"use-ipv4", no_argument, 0, '4'},
+ {"use-ipv6", no_argument, 0, '6'},
+ {"timeout", required_argument, 0, 't'},
+ {"verbose", no_argument, 0, 'v'},
+ {"remote-version", required_argument, 0, 'r'},
+ {"remote-protocol", required_argument, 0, 'P'},
+ {"output-format", required_argument, 0, output_format_index},
+ {0, 0, 0, 0}};
process_arguments_wrapper result = {
.config = check_ssh_config_init(),
@@ -228,7 +231,8 @@ process_arguments_wrapper process_arguments(int argc, char
**argv) {
*
*-----------------------------------------------------------------------*/
-int ssh_connect(mp_check *overall, char *haddr, int hport, char
*desired_remote_version, char *desired_remote_protocol) {
+int ssh_connect(mp_check *overall, char *haddr, int hport, char
*desired_remote_version,
+ char *desired_remote_protocol) {
struct timeval tv;
gettimeofday(&tv, NULL);
@@ -238,7 +242,8 @@ int ssh_connect(mp_check *overall, char *haddr, int hport,
char *desired_remote_
mp_subcheck connection_sc = mp_subcheck_init();
if (result != STATE_OK) {
connection_sc = mp_set_subcheck_state(connection_sc,
STATE_CRITICAL);
- xasprintf(&connection_sc.output, "Failed to establish TCP
connection to Host %s and Port %d", haddr, hport);
+ xasprintf(&connection_sc.output,
+ "Failed to establish TCP connection to Host
%s and Port %d", haddr, hport);
mp_add_subcheck_to_check(overall, connection_sc);
return result;
}
@@ -249,7 +254,8 @@ int ssh_connect(mp_check *overall, char *haddr, int hport,
char *desired_remote_
char *version_control_string = NULL;
size_t byte_offset = 0;
while ((version_control_string == NULL) &&
- (recv_ret = recv(socket, output + byte_offset, (unsigned
long)(BUFF_SZ - byte_offset), 0) > 0)) {
+ (recv_ret = recv(socket, output + byte_offset, (unsigned
long)(BUFF_SZ - byte_offset),
+ 0) > 0)) {
if (strchr(output, '\n')) { /* we've got at least one full
line, start parsing*/
byte_offset = 0;
@@ -262,7 +268,8 @@ int ssh_connect(mp_check *overall, char *haddr, int hport,
char *desired_remote_
size_t len = strlen(output + byte_offset);
if ((len >= 4) && (strncmp(output +
byte_offset, "SSH-", 4) == 0)) {
- /*if the string starts with SSH-, this
_should_ be a valid version control string*/
+ /*if the string starts with SSH-, this
_should_ be a valid version control
+ * string*/
version_control_string = output +
byte_offset;
break;
}
@@ -334,7 +341,8 @@ int ssh_connect(mp_check *overall, char *haddr, int hport,
char *desired_remote_
* "1.x" (e.g., "1.5" or "1.3")."
* - RFC 4253:5
*/
- char *ssh_server = ssh_proto + strspn(ssh_proto, "0123456789.") + 1; /*
(+1 for the '-' separating protoversion from softwareversion) */
+ char *ssh_server = ssh_proto + strspn(ssh_proto, "0123456789.") +
+ 1; /* (+1 for the '-' separating
protoversion from softwareversion) */
/* If there's a space in the version string, whatever's after the space
is a comment
* (which is NOT part of the server name/version)*/
@@ -346,13 +354,15 @@ int ssh_connect(mp_check *overall, char *haddr, int
hport, char *desired_remote_
mp_subcheck protocol_validity_sc = mp_subcheck_init();
if (strlen(ssh_proto) == 0 || strlen(ssh_server) == 0) {
protocol_validity_sc =
mp_set_subcheck_state(protocol_validity_sc, STATE_CRITICAL);
- xasprintf(&protocol_validity_sc.output, "Invalid protocol
version control string %s", version_control_string);
+ xasprintf(&protocol_validity_sc.output, "Invalid protocol
version control string %s",
+ version_control_string);
mp_add_subcheck_to_check(overall, protocol_validity_sc);
return OK;
}
protocol_validity_sc = mp_set_subcheck_state(protocol_validity_sc,
STATE_OK);
- xasprintf(&protocol_validity_sc.output, "Valid protocol version control
string %s", version_control_string);
+ xasprintf(&protocol_validity_sc.output, "Valid protocol version control
string %s",
+ version_control_string);
mp_add_subcheck_to_check(overall, protocol_validity_sc);
ssh_proto[strspn(ssh_proto, "0123456789. ")] = 0;
@@ -367,8 +377,8 @@ int ssh_connect(mp_check *overall, char *haddr, int hport,
char *desired_remote_
if (desired_remote_version && strcmp(desired_remote_version,
ssh_server)) {
mp_subcheck remote_version_sc = mp_subcheck_init();
remote_version_sc = mp_set_subcheck_state(remote_version_sc,
STATE_CRITICAL);
- xasprintf(&remote_version_sc.output, _("%s (protocol %s)
version mismatch, expected '%s'"), ssh_server, ssh_proto,
- desired_remote_version);
+ xasprintf(&remote_version_sc.output, _("%s (protocol %s)
version mismatch, expected '%s'"),
+ ssh_server, ssh_proto,
desired_remote_version);
close(socket);
mp_add_subcheck_to_check(overall, remote_version_sc);
return OK;
@@ -386,11 +396,13 @@ int ssh_connect(mp_check *overall, char *haddr, int
hport, char *desired_remote_
if (desired_remote_protocol && strcmp(desired_remote_protocol,
ssh_proto)) {
protocol_version_sc =
mp_set_subcheck_state(protocol_version_sc, STATE_CRITICAL);
- xasprintf(&protocol_version_sc.output, _("%s (protocol %s)
protocol version mismatch, expected '%s'"), ssh_server, ssh_proto,
- desired_remote_protocol);
+ xasprintf(&protocol_version_sc.output,
+ _("%s (protocol %s) protocol version
mismatch, expected '%s'"), ssh_server,
+ ssh_proto, desired_remote_protocol);
} else {
protocol_version_sc =
mp_set_subcheck_state(protocol_version_sc, STATE_OK);
- xasprintf(&protocol_version_sc.output, "SSH server version: %s
(protocol version: %s)", ssh_server, ssh_proto);
+ xasprintf(&protocol_version_sc.output, "SSH server version: %s
(protocol version: %s)",
+ ssh_server, ssh_proto);
}
mp_add_subcheck_to_check(overall, protocol_version_sc);
@@ -423,7 +435,8 @@ void print_help(void) {
printf(UT_CONN_TIMEOUT, DEFAULT_SOCKET_TIMEOUT);
printf(" %s\n", "-r, --remote-version=STRING");
- printf(" %s\n", _("Alert if string doesn't match expected server
version (ex: OpenSSH_3.9p1)"));
+ printf(" %s\n",
+ _("Alert if string doesn't match expected server version
(ex: OpenSSH_3.9p1)"));
printf(" %s\n", "-P, --remote-protocol=STRING");
printf(" %s\n", _("Alert if protocol doesn't match expected protocol
version (ex: 2.0)"));
@@ -436,5 +449,6 @@ void print_help(void) {
void print_usage(void) {
printf("%s\n", _("Usage:"));
- printf("%s [-4|-6] [-t <timeout>] [-r <remote version>] [-p <port>]
--hostname <host>\n", progname);
+ printf("%s [-4|-6] [-t <timeout>] [-r <remote version>] [-p <port>]
--hostname <host>\n",
+ progname);
}
