diff options
Diffstat (limited to 'plugins')
| -rw-r--r-- | plugins/check_smtp.c | 76 |
1 files changed, 54 insertions, 22 deletions
diff --git a/plugins/check_smtp.c b/plugins/check_smtp.c index 8c4f26e3..75cd5a8d 100644 --- a/plugins/check_smtp.c +++ b/plugins/check_smtp.c @@ -40,9 +40,15 @@ void print_usage (void); int server_port = SMTP_PORT; char *server_address = NULL; char *server_expect = NULL; -int smtp_use_dummycmd = 1; -char *mail_command; -char *from_arg; +int smtp_use_dummycmd = 0; +char *mail_command = NULL; +char *from_arg = NULL; +int ncommands=0; +int command_size=0; +int nresponses=0; +int response_size=0; +char **commands = NULL; +char **responses = NULL; int warning_time = 0; int check_warning_time = FALSE; int critical_time = 0; @@ -58,11 +64,12 @@ int main (int argc, char **argv) { int sd; + int n = 0; double elapsed_time; long microsec; int result = STATE_UNKNOWN; char buffer[MAX_INPUT_BUFFER]; - char *from_str = NULL; + char *cmd_str = NULL; char *helocmd = NULL; struct timeval tv; @@ -82,10 +89,10 @@ main (int argc, char **argv) asprintf (&helocmd, "%s%s%s", SMTP_HELO, helocmd, "\r\n"); /* initialize the MAIL command with optional FROM command */ - asprintf (&from_str, "%sFROM: %s%s", mail_command, from_arg, "\r\n"); + asprintf (&cmd_str, "%sFROM: %s%s", mail_command, from_arg, "\r\n"); - if (verbose) - printf ("FROMCMD: %s\n", from_str); + if (verbose && smtp_use_dummycmd) + printf ("FROM CMD: %s", cmd_str); /* initialize alarm signal handling */ (void) signal (SIGALRM, socket_timeout_alarm_handler); @@ -99,8 +106,7 @@ main (int argc, char **argv) /* try to connect to the host at the given port number */ result = my_tcp_connect (server_address, server_port, &sd); - /* we connected, so close connection before exiting */ - if (result == STATE_OK) { + if (result == STATE_OK) { /* we connected */ /* watch for the SMTP connection string and */ /* return a WARNING status if we couldn't read any data */ @@ -109,6 +115,8 @@ main (int argc, char **argv) result = STATE_WARNING; } else { + if (verbose) + printf ("%s", buffer); /* strip the buffer of carriage returns */ strip (buffer); /* make sure we find the response we are looking for */ @@ -139,16 +147,25 @@ main (int argc, char **argv) * Use the -f option to provide a FROM address */ if (smtp_use_dummycmd) { - - send(sd, from_str, strlen(from_str), 0); - - /* allow for response to mail_command to reach us */ + send(sd, cmd_str, strlen(cmd_str), 0); recv(sd, buffer, MAX_INPUT_BUFFER-1, 0); - if (verbose) - printf(_("DUMMYCMD: %s\n%s\n"),from_str,buffer); + printf("%s", buffer); + } - } /* smtp_use_dummycmd */ + while (n < ncommands) { + asprintf (&cmd_str, "%s%s", commands[n], "\r\n"); + send(sd, cmd_str, strlen(cmd_str), 0); + recv(sd, buffer, MAX_INPUT_BUFFER-1, 0); + if (verbose) + printf("%s", buffer); + strip (buffer); + if (n < nresponses && strstr(buffer, responses[n])!=buffer) { + result = STATE_WARNING; + printf (_("SMTP %s - Invalid response '%s' to command '%s'\n"), state_text (result), buffer, commands[n]); + } + n++; + } /* tell the server we're done */ send (sd, SMTP_QUIT, strlen (SMTP_QUIT), 0); @@ -200,6 +217,7 @@ process_arguments (int argc, char **argv) {"port", required_argument, 0, 'p'}, {"from", required_argument, 0, 'f'}, {"command", required_argument, 0, 'C'}, + {"response", required_argument, 0, 'R'}, {"nocommand", required_argument, 0, 'n'}, {"verbose", no_argument, 0, 'v'}, {"version", no_argument, 0, 'V'}, @@ -222,7 +240,7 @@ process_arguments (int argc, char **argv) } while (1) { - c = getopt_long (argc, argv, "+hVv46t:p:f:e:c:w:H:C:", + c = getopt_long (argc, argv, "+hVv46t:p:f:e:c:w:H:C:R:", longopts, &option); if (c == -1 || c == EOF) @@ -245,16 +263,30 @@ process_arguments (int argc, char **argv) break; case 'f': /* from argument */ from_arg = optarg; + smtp_use_dummycmd = 1; break; case 'e': /* server expect string on 220 */ server_expect = optarg; break; - case 'C': /* server expect string on 220 */ - mail_command = optarg; - smtp_use_dummycmd = 1; + case 'C': /* commands */ + if (ncommands >= command_size) { + commands = realloc (commands, command_size+8); + if (commands == NULL) + die (STATE_UNKNOWN, + _("Could not realloc() units [%d]\n"), ncommands); + } + commands[ncommands] = optarg; + ncommands++; break; - case 'n': /* server expect string on 220 */ - smtp_use_dummycmd = 0; + case 'R': /* server responses */ + if (nresponses >= response_size) { + responses = realloc (responses, response_size+8); + if (responses == NULL) + die (STATE_UNKNOWN, + _("Could not realloc() units [%d]\n"), nresponses); + } + responses[nresponses] = optarg; + nresponses++; break; case 'c': /* critical time threshold */ if (is_intnonneg (optarg)) { |