/**
* collectd - src/notify_email.c
* Copyright (C) 2008 Oleg King
+ * Copyright (C) 2010 Florian Forster
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
*
* Authors:
* Oleg King <king2 at kaluga.ru>
+ * Florian Forster <octo at collectd.org>
**/
#include "collectd.h"
#include <auth-client.h>
#include <libesmtp.h>
+#include <pthread.h>
#define MAXSTRING 256
static const char *config_keys[] =
{
- "SMTPHost",
+ "SMTPServer",
"SMTPPort",
"SMTPUser",
"SMTPPassword",
- "SMTPFrom",
- "SMTPSubject",
- "EmailTo"
+ "From",
+ "Recipient",
+ "Subject"
};
static int config_keys_num = STATIC_ARRAY_SIZE (config_keys);
-static char **emails;
-static int emails_len = 0;
+static char **recipients;
+static int recipients_len = 0;
static smtp_session_t session;
+static pthread_mutex_t session_lock = PTHREAD_MUTEX_INITIALIZER;
static smtp_message_t message;
static auth_context_t authctx = NULL;
static char *smtp_host = NULL;
static char *smtp_user = NULL;
static char *smtp_password = NULL;
-static char *smtp_from = NULL;
-static char *smtp_subject = NULL;
+static char *email_from = NULL;
+static char *email_subject = NULL;
#define DEFAULT_SMTP_HOST "localhost"
#define DEFAULT_SMTP_FROM "root@localhost"
#define DEFAULT_SMTP_SUBJECT "Collectd notify: %s@%s"
-
/* Callback to get username and password */
-static int authinteract (auth_client_request_t request, char **result, int fields, void *arg)
+static int authinteract (auth_client_request_t request, char **result,
+ int fields, void __attribute__((unused)) *arg)
{
int i;
for (i = 0; i < fields; i++)
return 0;
}
return 1;
-}
+} /* int authinteract */
/* Callback to print the recipient status */
-static void print_recipient_status (smtp_recipient_t recipient, const char *mailbox, void *arg)
+static void print_recipient_status (smtp_recipient_t recipient,
+ const char *mailbox, void __attribute__((unused)) *arg)
{
const smtp_status_t *status;
status = smtp_recipient_status (recipient);
if (status->text[strlen(status->text) - 2] == '\r')
status->text[strlen(status->text) - 2] = 0;
- INFO ("notify_email: notify sent to %s: %d %s", mailbox, status->code, status->text);
-}
+ INFO ("notify_email: notify sent to %s: %d %s", mailbox, status->code,
+ status->text);
+} /* void print_recipient_status */
/* Callback to monitor SMTP activity */
-static void monitor_cb (const char *buf, int buflen, int writing, void *arg)
+static void monitor_cb (const char *buf, int buflen, int writing,
+ void __attribute__((unused)) *arg)
{
char log_str[MAXSTRING];
log_str[buflen - 2] = 0; /* replace \n with \0 */
if (writing == SMTP_CB_HEADERS) {
- DEBUG ("SMTP --- H: %s", log_str);
+ DEBUG ("notify_email plugin: SMTP --- H: %s", log_str);
return;
}
- DEBUG (writing ? "SMTP >>> C: %s" : "SMTP <<< S: %s", log_str);
-}
+ DEBUG (writing
+ ? "notify_email plugin: SMTP >>> C: %s"
+ : "notify_email plugin: SMTP <<< S: %s",
+ log_str);
+} /* void monitor_cb */
-static int notify_email_init()
+static int notify_email_init (void)
{
char server[MAXSTRING];
+ ssnprintf(server, sizeof (server), "%s:%i",
+ (smtp_host == NULL) ? DEFAULT_SMTP_HOST : smtp_host,
+ smtp_port);
+
+ pthread_mutex_lock (&session_lock);
+
auth_client_init();
- if ( !(session = smtp_create_session()) ) {
+
+ session = smtp_create_session ();
+ if (session == NULL) {
+ pthread_mutex_unlock (&session_lock);
ERROR ("notify_email plugin: cannot create SMTP session");
return (-1);
}
smtp_set_monitorcb (session, monitor_cb, NULL, 1);
smtp_set_hostname (session, hostname_g);
- ssnprintf(server, sizeof (server), "%s:%i",
- (smtp_host == NULL) ? DEFAULT_SMTP_HOST : smtp_host,
- smtp_port);
smtp_set_server (session, server);
if (smtp_user && smtp_password) {
}
if ( !smtp_auth_set_context (session, authctx)) {
+ pthread_mutex_unlock (&session_lock);
ERROR ("notify_email plugin: cannot set SMTP auth context");
return (-1);
}
+ pthread_mutex_unlock (&session_lock);
return (0);
-}
-
+} /* int notify_email_init */
-static int notify_email_shutdown()
+static int notify_email_shutdown (void)
{
- smtp_destroy_session (session);
- auth_destroy_context (authctx);
+ pthread_mutex_lock (&session_lock);
+
+ if (session != NULL)
+ smtp_destroy_session (session);
+ session = NULL;
+
+ if (authctx != NULL)
+ auth_destroy_context (authctx);
+ authctx = NULL;
+
auth_client_exit();
- return (0);
-}
+ pthread_mutex_unlock (&session_lock);
+ return (0);
+} /* int notify_email_shutdown */
static int notify_email_config (const char *key, const char *value)
{
- if (strcasecmp (key, "EmailTo") == 0)
+ if (strcasecmp (key, "Recipient") == 0)
{
char **tmp;
- tmp = (char **) realloc ((void *) emails, (emails_len + 1) * sizeof (char *));
+ tmp = (char **) realloc ((void *) recipients, (recipients_len + 1) * sizeof (char *));
if (tmp == NULL) {
ERROR ("notify_email: realloc failed.");
return (-1);
}
- emails = tmp;
- emails[emails_len] = strdup (value);
- if (emails[emails_len] == NULL) {
+ recipients = tmp;
+ recipients[recipients_len] = strdup (value);
+ if (recipients[recipients_len] == NULL) {
ERROR ("notify_email: strdup failed.");
return (-1);
}
- emails_len++;
+ recipients_len++;
}
- else if (0 == strcasecmp (key, "SMTPHost")) {
+ else if (0 == strcasecmp (key, "SMTPServer")) {
sfree (smtp_host);
smtp_host = strdup (value);
}
sfree (smtp_password);
smtp_password = strdup (value);
}
- else if (0 == strcasecmp (key, "SMTPFrom")) {
- sfree (smtp_from);
- smtp_from = strdup (value);
+ else if (0 == strcasecmp (key, "From")) {
+ sfree (email_from);
+ email_from = strdup (value);
}
- else if (0 == strcasecmp (key, "SMTPSubject")) {
- sfree (smtp_subject);
- smtp_subject = strdup (value);
+ else if (0 == strcasecmp (key, "Subject")) {
+ sfree (email_subject);
+ email_subject = strdup (value);
}
else {
return -1;
return 0;
} /* int notify_email_config (const char *, const char *) */
-
-static int notify_email_notification (const notification_t *n)
+static int notify_email_notification (const notification_t *n,
+ user_data_t __attribute__((unused)) *user_data)
{
smtp_recipient_t recipient;
+ time_t tt;
struct tm timestamp_tm;
char timestamp_str[64];
: ((n->severity == NOTIF_OKAY) ? "OKAY" : "UNKNOWN")));
ssnprintf (subject, sizeof (subject),
- (smtp_subject == NULL) ? DEFAULT_SMTP_SUBJECT : smtp_subject,
+ (email_subject == NULL) ? DEFAULT_SMTP_SUBJECT : email_subject,
severity, n->host);
- localtime_r (&n->time, ×tamp_tm);
- strftime (timestamp_str, sizeof (timestamp_str), "%Y-%m-%d %H:%M:%S", ×tamp_tm);
+ tt = CDTIME_T_TO_TIME_T (n->time);
+ localtime_r (&tt, ×tamp_tm);
+ strftime (timestamp_str, sizeof (timestamp_str), "%Y-%m-%d %H:%M:%S",
+ ×tamp_tm);
timestamp_str[sizeof (timestamp_str) - 1] = '\0';
/* Let's make RFC822 message text with \r\n EOLs */
n->host,
n->message);
- if ( !(message = smtp_add_message (session))) {
+ pthread_mutex_lock (&session_lock);
+
+ if (session == NULL) {
+ /* Initialization failed or we're in the process of shutting down. */
+ pthread_mutex_unlock (&session_lock);
+ return (-1);
+ }
+
+ if (!(message = smtp_add_message (session))) {
+ pthread_mutex_unlock (&session_lock);
ERROR ("notify_email plugin: cannot set SMTP message");
return (-1);
}
- smtp_set_reverse_path (message, smtp_from);
+ smtp_set_reverse_path (message, email_from);
smtp_set_header (message, "To", NULL, NULL);
smtp_set_message_str (message, buf);
- for (i = 0; i < emails_len; i++)
- recipient = smtp_add_recipient (message, emails[i]);
+ for (i = 0; i < recipients_len; i++)
+ recipient = smtp_add_recipient (message, recipients[i]);
/* Initiate a connection to the SMTP server and transfer the message. */
if (!smtp_start_session (session)) {
char buf[MAXSTRING];
- ERROR ("SMTP server problem: %s", smtp_strerror (smtp_errno (), buf, sizeof buf));
+ ERROR ("notify_email plugin: SMTP server problem: %s",
+ smtp_strerror (smtp_errno (), buf, sizeof buf));
+ pthread_mutex_unlock (&session_lock);
return (-1);
} else {
const smtp_status_t *status;
/* Report on the success or otherwise of the mail transfer. */
status = smtp_message_transfer_status (message);
- DEBUG ("SMTP server report: %d %s", status->code, (status->text != NULL) ? status->text : "\n");
+ DEBUG ("notify_email plugin: SMTP server report: %d %s",
+ status->code, (status->text != NULL) ? status->text : "\n");
smtp_enumerate_recipients (message, print_recipient_status, NULL);
}
+ pthread_mutex_unlock (&session_lock);
return (0);
} /* int notify_email_notification */
plugin_register_shutdown ("notify_email", notify_email_shutdown);
plugin_register_config ("notify_email", notify_email_config,
config_keys, config_keys_num);
- plugin_register_notification ("notify_email", notify_email_notification);
+ plugin_register_notification ("notify_email", notify_email_notification,
+ /* user_data = */ NULL);
} /* void module_register (void) */
+
+/* vim: set sw=2 sts=2 ts=8 et : */
projects / collectd.git / blobdiff