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check_smtp.c

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git-svn-id: https://nagiosplug.svn.sourceforge.net/svnroot/nagiosplug/nagiosplug/trunk@1268 f882894a-f735-0410-b71e-b25c423dba1c
This commit is contained in:
M. Sean Finney 2005-11-02 08:47:26 +00:00
parent 3038819fef
commit b51ab1c069
1 changed files with 164 additions and 8 deletions
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172
plugins/check_smtp.c
View file

@ -45,6 +45,7 @@ enum {
#define SMTP_EHLO "EHLO "
#define SMTP_QUIT "QUIT\r\n"
#define SMTP_STARTTLS "STARTTLS\r\n"
#define SMTP_AUTH_LOGIN "AUTH LOGIN\r\n"
#ifndef HOST_MAX_BYTES
#define HOST_MAX_BYTES 255
@ -82,6 +83,9 @@ int nresponses=0;
int response_size=0;
char **commands = NULL;
char **responses = NULL;
char *authtype = NULL;
char *authuser = NULL;
char *authpass = NULL;
int warning_time = 0;
int check_warning_time = FALSE;
int critical_time = 0;
@ -99,6 +103,47 @@ enum {
MAXBUF = 1024
};
/* written by lauri alanko */
static char *
base64 (const char *bin, size_t len)
{
char *buf = (char *) malloc ((len + 2) / 3 * 4 + 1);
size_t i = 0, j = 0;
char BASE64_END = '=';
char base64_table[64];
strncpy (base64_table, "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/", 64);
while (j < len - 2) {
buf[i++] = base64_table[bin[j] >> 2];
buf[i++] = base64_table[((bin[j] & 3) << 4) | (bin[j + 1] >> 4)];
buf[i++] = base64_table[((bin[j + 1] & 15) << 2) | (bin[j + 2] >> 6)];
buf[i++] = base64_table[bin[j + 2] & 63];
j += 3;
}
switch (len - j) {
case 1:
buf[i++] = base64_table[bin[j] >> 2];
buf[i++] = base64_table[(bin[j] & 3) << 4];
buf[i++] = BASE64_END;
buf[i++] = BASE64_END;
break;
case 2:
buf[i++] = base64_table[bin[j] >> 2];
buf[i++] = base64_table[((bin[j] & 3) << 4) | (bin[j + 1] >> 4)];
buf[i++] = base64_table[(bin[j + 1] & 15) << 2];
buf[i++] = BASE64_END;
break;
case 0:
break;
}
buf[i] = '\0';
return buf;
}
int
main (int argc, char **argv)
{
@ -109,6 +154,7 @@ main (int argc, char **argv)
int result = STATE_UNKNOWN;
char *cmd_str = NULL;
char *helocmd = NULL;
char *error_msg = NULL;
struct timeval tv;
struct hostent *hp;
@ -293,6 +339,92 @@ main (int argc, char **argv)
n++;
}
if (authtype != NULL) {
if (strcmp (authtype, "LOGIN") == 0) {
char *abuf;
int ret;
do {
if (authuser == NULL) {
result = STATE_CRITICAL;
error_msg = _("no authuser specified, ");
break;
}
if (authpass == NULL) {
result = STATE_CRITICAL;
error_msg = _("no authpass specified, ");
break;
}
/* send AUTH LOGIN */
my_send(SMTP_AUTH_LOGIN, strlen(SMTP_AUTH_LOGIN));
if (verbose)
printf (_("sent %s\n"), "AUTH LOGIN");
if((ret = my_recv(buffer, MAXBUF - 1)) < 0){
error_msg = _("recv() failed after AUTH LOGIN, \n");
result = STATE_WARNING;
break;
}
buffer[ret] = 0;
if (verbose)
printf (_("received %s\n"), buffer);
if (strncmp (buffer, "334", 3) != 0) {
result = STATE_CRITICAL;
error_msg = _("invalid response received after AUTH LOGIN, ");
break;
}
/* encode authuser with base64 */
abuf = base64 (authuser, strlen(authuser));
strcat (abuf, "\r\n");
my_send(abuf, strlen(abuf));
if (verbose)
printf (_("sent %s\n"), abuf);
if ((ret = my_recv(buffer, MAX_INPUT_BUFFER-1)) == -1) {
result = STATE_CRITICAL;
error_msg = _("recv() failed after sending authuser, ");
break;
}
buffer[ret] = 0;
if (verbose) {
printf (_("received %s\n"), buffer);
}
if (strncmp (buffer, "334", 3) != 0) {
result = STATE_CRITICAL;
error_msg = _("invalid response received after authuser, ");
break;
}
/* encode authpass with base64 */
abuf = base64 (authpass, strlen(authpass));
strcat (abuf, "\r\n");
my_send(abuf, strlen(abuf));
if (verbose) {
printf (_("sent %s\n"), abuf);
}
if ((ret = my_recv(buffer, MAX_INPUT_BUFFER-1)) == -1) {
result = STATE_CRITICAL;
error_msg = _("recv() failed after sending authpass, ");
break;
}
buffer[ret] = 0;
if (verbose) {
printf (_("received %s\n"), buffer);
}
if (strncmp (buffer, "235", 3) != 0) {
result = STATE_CRITICAL;
error_msg = _("invalid response received after authpass, ");
break;
}
break;
} while (0);
} else {
result = STATE_CRITICAL;
error_msg = _("only authtype LOGIN is supported, ");
}
}
/* tell the server we're done */
my_send (SMTP_QUIT, strlen (SMTP_QUIT));
@ -313,13 +445,15 @@ main (int argc, char **argv)
result = STATE_WARNING;
}
printf (_("SMTP %s - %.3f sec. response time%s%s|%s\n"),
state_text (result), elapsed_time,
verbose?", ":"", verbose?buffer:"",
fperfdata ("time", elapsed_time, "s",
(int)check_warning_time, warning_time,
(int)check_critical_time, critical_time,
TRUE, 0, FALSE, 0));
printf (_("SMTP %s - %s%.3f sec. response time%s%s|%s\n"),
state_text (result),
(error_msg == NULL ? "" : error_msg),
elapsed_time,
verbose?", ":"", verbose?buffer:"",
fperfdata ("time", elapsed_time, "s",
(int)check_warning_time, warning_time,
(int)check_critical_time, critical_time,
TRUE, 0, FALSE, 0));
return result;
}
@ -342,6 +476,9 @@ process_arguments (int argc, char **argv)
{"port", required_argument, 0, 'p'},
{"from", required_argument, 0, 'f'},
{"fqdn", required_argument, 0, 'F'},
{"authtype", required_argument, 0, 'A'},
{"authuser", required_argument, 0, 'U'},
{"authpass", required_argument, 0, 'P'},
{"command", required_argument, 0, 'C'},
{"response", required_argument, 0, 'R'},
{"nocommand", required_argument, 0, 'n'},
@ -368,7 +505,7 @@ process_arguments (int argc, char **argv)
}
while (1) {
c = getopt_long (argc, argv, "+hVv46t:p:f:e:c:w:H:C:R:SD:F:",
c = getopt_long (argc, argv, "+hVv46t:p:f:e:c:w:H:C:R:SD:F:A:U:P:",
longopts, &option);
if (c == -1 || c == EOF)
@ -397,6 +534,15 @@ process_arguments (int argc, char **argv)
from_arg = optarg;
smtp_use_dummycmd = 1;
break;
case 'A':
authtype = optarg;
break;
case 'U':
authuser = optarg;
break;
case 'P':
authpass = optarg;
break;
case 'e': /* server expect string on 220 */
server_expect = optarg;
break;
@ -562,6 +708,15 @@ print_help (void)
Use STARTTLS for the connection.\n"));
#endif
printf("\
-A, --authtype=STRING\n\
SMTP AUTH type to check (default none, only LOGIN supported)\n\
-U, --authuser=STRING\n\
SMTP AUTH username\n\
-P, --authpass=STRING\n\
SMTP AUTH password\n\
");
printf (_(UT_WARN_CRIT));
printf (_(UT_TIMEOUT), DEFAULT_SOCKET_TIMEOUT);
@ -584,6 +739,7 @@ print_usage (void)
{
printf ("\
Usage: %s -H host [-p port] [-e expect] [-C command] [-f from addr]\n\
[-A authtype -U authuser -P authpass]\n\
[-w warn] [-c crit] [-t timeout] [-S] [-D days] [-n] [-v] [-4|-6]\n", progname);
}