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diff --git a/src/network.c b/src/network.c
--- a/src/network.c
+++ /dev/null
@@ -1,3630 +0,0 @@
-/**
- * collectd - src/network.c
- * Copyright (C) 2005-2013 Florian octo Forster
- * Copyright (C) 2009 Aman Gupta
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU Lesser General Public License as published by
- * the Free Software Foundation; only version 2.1 of the License is
- * applicable.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
- *
- * Authors:
- * Florian octo Forster <octo at collectd.org>
- * Aman Gupta <aman at tmm1.net>
- **/
-
-#define _DEFAULT_SOURCE
-#define _BSD_SOURCE /* For struct ip_mreq */
-
-#include "collectd.h"
-#include "plugin.h"
-#include "common.h"
-#include "configfile.h"
-#include "utils_fbhash.h"
-#include "utils_avltree.h"
-#include "utils_cache.h"
-#include "utils_complain.h"
-
-#include "network.h"
-
-#if HAVE_PTHREAD_H
-# include <pthread.h>
-#endif
-#if HAVE_SYS_SOCKET_H
-# include <sys/socket.h>
-#endif
-#if HAVE_NETDB_H
-# include <netdb.h>
-#endif
-#if HAVE_NETINET_IN_H
-# include <netinet/in.h>
-#endif
-#if HAVE_ARPA_INET_H
-# include <arpa/inet.h>
-#endif
-#if HAVE_POLL_H
-# include <poll.h>
-#endif
-#if HAVE_NET_IF_H
-# include <net/if.h>
-#endif
-
-#if HAVE_LIBGCRYPT
-# include <pthread.h>
-# if defined __APPLE__
-/* default xcode compiler throws warnings even when deprecated functionality
- * is not used. -Werror breaks the build because of erroneous warnings.
- * http://stackoverflow.com/questions/10556299/compiler-warnings-with-libgcrypt-v1-5-0/12830209#12830209
- */
-# pragma GCC diagnostic ignored "-Wdeprecated-declarations"
-# endif
-/* FreeBSD's copy of libgcrypt extends the existing GCRYPT_NO_DEPRECATED
- * to properly hide all deprecated functionality.
- * http://svnweb.freebsd.org/ports/head/security/libgcrypt/files/patch-src__gcrypt.h.in
- */
-# define GCRYPT_NO_DEPRECATED
-# include <gcrypt.h>
-# if defined __APPLE__
-/* Re enable deprecation warnings */
-# pragma GCC diagnostic warning "-Wdeprecated-declarations"
-# endif
-# if GCRYPT_VERSION_NUMBER < 0x010600
-GCRY_THREAD_OPTION_PTHREAD_IMPL;
-# endif
-#endif
-
-#ifndef IPV6_ADD_MEMBERSHIP
-# ifdef IPV6_JOIN_GROUP
-# define IPV6_ADD_MEMBERSHIP IPV6_JOIN_GROUP
-# else
-# error "Neither IP_ADD_MEMBERSHIP nor IPV6_JOIN_GROUP is defined"
-# endif
-#endif /* !IP_ADD_MEMBERSHIP */
-
-/*
- * Maximum size required for encryption / signing:
- *
- * 42 bytes for the encryption header
- * + 64 bytes for the username
- * -----------
- * = 106 bytes
- */
-#define BUFF_SIG_SIZE 106
-
-/*
- * Private data types
- */
-#define SECURITY_LEVEL_NONE 0
-#if HAVE_LIBGCRYPT
-# define SECURITY_LEVEL_SIGN 1
-# define SECURITY_LEVEL_ENCRYPT 2
-#endif
-struct sockent_client
-{
- int fd;
- struct sockaddr_storage *addr;
- socklen_t addrlen;
-#if HAVE_LIBGCRYPT
- int security_level;
- char *username;
- char *password;
- gcry_cipher_hd_t cypher;
- unsigned char password_hash[32];
-#endif
- cdtime_t next_resolve_reconnect;
- cdtime_t resolve_interval;
-};
-
-struct sockent_server
-{
- int *fd;
- size_t fd_num;
-#if HAVE_LIBGCRYPT
- int security_level;
- char *auth_file;
- fbhash_t *userdb;
- gcry_cipher_hd_t cypher;
-#endif
-};
-
-typedef struct sockent
-{
-#define SOCKENT_TYPE_CLIENT 1
-#define SOCKENT_TYPE_SERVER 2
- int type;
-
- char *node;
- char *service;
- int interface;
-
- union
- {
- struct sockent_client client;
- struct sockent_server server;
- } data;
-
- struct sockent *next;
-} sockent_t;
-
-/* 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 3 3
- * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
- * +-------+-----------------------+-------------------------------+
- * ! Ver. ! ! Length !
- * +-------+-----------------------+-------------------------------+
- */
-struct part_header_s
-{
- uint16_t type;
- uint16_t length;
-};
-typedef struct part_header_s part_header_t;
-
-/* 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 3 3
- * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
- * +-------------------------------+-------------------------------+
- * ! Type ! Length !
- * +-------------------------------+-------------------------------+
- * : (Length - 4) Bytes :
- * +---------------------------------------------------------------+
- */
-struct part_string_s
-{
- part_header_t *head;
- char *value;
-};
-typedef struct part_string_s part_string_t;
-
-/* 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 3 3
- * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
- * +-------------------------------+-------------------------------+
- * ! Type ! Length !
- * +-------------------------------+-------------------------------+
- * : (Length - 4 == 2 || 4 || 8) Bytes :
- * +---------------------------------------------------------------+
- */
-struct part_number_s
-{
- part_header_t *head;
- uint64_t *value;
-};
-typedef struct part_number_s part_number_t;
-
-/* 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 3 3
- * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
- * +-------------------------------+-------------------------------+
- * ! Type ! Length !
- * +-------------------------------+---------------+---------------+
- * ! Num of values ! Type0 ! Type1 !
- * +-------------------------------+---------------+---------------+
- * ! Value0 !
- * ! !
- * +---------------------------------------------------------------+
- * ! Value1 !
- * ! !
- * +---------------------------------------------------------------+
- */
-struct part_values_s
-{
- part_header_t *head;
- uint16_t *num_values;
- uint8_t *values_types;
- value_t *values;
-};
-typedef struct part_values_s part_values_t;
-
-/* 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 3 3
- * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
- * +-------------------------------+-------------------------------+
- * ! Type ! Length !
- * +-------------------------------+-------------------------------+
- * ! Hash (Bits 0 - 31) !
- * : : :
- * ! Hash (Bits 224 - 255) !
- * +---------------------------------------------------------------+
- */
-/* Minimum size */
-#define PART_SIGNATURE_SHA256_SIZE 36
-struct part_signature_sha256_s
-{
- part_header_t head;
- unsigned char hash[32];
- char *username;
-};
-typedef struct part_signature_sha256_s part_signature_sha256_t;
-
-/* 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 3 3
- * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
- * +-------------------------------+-------------------------------+
- * ! Type ! Length !
- * +-------------------------------+-------------------------------+
- * ! Original length ! Padding (0 - 15 bytes) !
- * +-------------------------------+-------------------------------+
- * ! Hash (Bits 0 - 31) !
- * : : :
- * ! Hash (Bits 128 - 159) !
- * +---------------------------------------------------------------+
- */
-/* Minimum size */
-#define PART_ENCRYPTION_AES256_SIZE 42
-struct part_encryption_aes256_s
-{
- part_header_t head;
- uint16_t username_length;
- char *username;
- unsigned char iv[16];
- /* <encrypted> */
- unsigned char hash[20];
- /* <payload /> */
- /* </encrypted> */
-};
-typedef struct part_encryption_aes256_s part_encryption_aes256_t;
-
-struct receive_list_entry_s
-{
- char *data;
- int data_len;
- int fd;
- struct receive_list_entry_s *next;
-};
-typedef struct receive_list_entry_s receive_list_entry_t;
-
-/*
- * Private variables
- */
-static int network_config_ttl = 0;
-/* Ethernet - (IPv6 + UDP) = 1500 - (40 + 8) = 1452 */
-static size_t network_config_packet_size = 1452;
-static int network_config_forward = 0;
-static int network_config_stats = 0;
-
-static sockent_t *sending_sockets = NULL;
-
-static receive_list_entry_t *receive_list_head = NULL;
-static receive_list_entry_t *receive_list_tail = NULL;
-static pthread_mutex_t receive_list_lock = PTHREAD_MUTEX_INITIALIZER;
-static pthread_cond_t receive_list_cond = PTHREAD_COND_INITIALIZER;
-static uint64_t receive_list_length = 0;
-
-static sockent_t *listen_sockets = NULL;
-static struct pollfd *listen_sockets_pollfd = NULL;
-static size_t listen_sockets_num = 0;
-
-/* The receive and dispatch threads will run as long as `listen_loop' is set to
- * zero. */
-static int listen_loop = 0;
-static int receive_thread_running = 0;
-static pthread_t receive_thread_id;
-static int dispatch_thread_running = 0;
-static pthread_t dispatch_thread_id;
-
-/* Buffer in which to-be-sent network packets are constructed. */
-static char *send_buffer;
-static char *send_buffer_ptr;
-static int send_buffer_fill;
-static value_list_t send_buffer_vl = VALUE_LIST_STATIC;
-static pthread_mutex_t send_buffer_lock = PTHREAD_MUTEX_INITIALIZER;
-
-/* XXX: These counters are incremented from one place only. The spot in which
- * the values are incremented is either only reachable by one thread (the
- * dispatch thread, for example) or locked by some lock (send_buffer_lock for
- * example). Only if neither is true, the stats_lock is acquired. The counters
- * are always read without holding a lock in the hope that writing 8 bytes to
- * memory is an atomic operation. */
-static derive_t stats_octets_rx = 0;
-static derive_t stats_octets_tx = 0;
-static derive_t stats_packets_rx = 0;
-static derive_t stats_packets_tx = 0;
-static derive_t stats_values_dispatched = 0;
-static derive_t stats_values_not_dispatched = 0;
-static derive_t stats_values_sent = 0;
-static derive_t stats_values_not_sent = 0;
-static pthread_mutex_t stats_lock = PTHREAD_MUTEX_INITIALIZER;
-
-/*
- * Private functions
- */
-static _Bool check_receive_okay (const value_list_t *vl) /* {{{ */
-{
- uint64_t time_sent = 0;
- int status;
-
- status = uc_meta_data_get_unsigned_int (vl,
- "network:time_sent", &time_sent);
-
- /* This is a value we already sent. Don't allow it to be received again in
- * order to avoid looping. */
- if ((status == 0) && (time_sent >= ((uint64_t) vl->time)))
- return (0);
-
- return (1);
-} /* }}} _Bool check_receive_okay */
-
-static _Bool check_send_okay (const value_list_t *vl) /* {{{ */
-{
- _Bool received = 0;
- int status;
-
- if (network_config_forward != 0)
- return (1);
-
- if (vl->meta == NULL)
- return (1);
-
- status = meta_data_get_boolean (vl->meta, "network:received", &received);
- if (status == -ENOENT)
- return (1);
- else if (status != 0)
- {
- ERROR ("network plugin: check_send_okay: meta_data_get_boolean failed "
- "with status %i.", status);
- return (1);
- }
-
- /* By default, only *send* value lists that were not *received* by the
- * network plugin. */
- return (!received);
-} /* }}} _Bool check_send_okay */
-
-static _Bool check_notify_received (const notification_t *n) /* {{{ */
-{
- notification_meta_t *ptr;
-
- for (ptr = n->meta; ptr != NULL; ptr = ptr->next)
- if ((strcmp ("network:received", ptr->name) == 0)
- && (ptr->type == NM_TYPE_BOOLEAN))
- return ((_Bool) ptr->nm_value.nm_boolean);
-
- return (0);
-} /* }}} _Bool check_notify_received */
-
-static _Bool check_send_notify_okay (const notification_t *n) /* {{{ */
-{
- static c_complain_t complain_forwarding = C_COMPLAIN_INIT_STATIC;
- _Bool received = 0;
-
- if (n->meta == NULL)
- return (1);
-
- received = check_notify_received (n);
-
- if (network_config_forward && received)
- {
- c_complain_once (LOG_ERR, &complain_forwarding,
- "network plugin: A notification has been received via the network "
- "and forwarding is enabled. Forwarding of notifications is currently "
- "not supported, because there is not loop-deteciton available. "
- "Please contact the collectd mailing list if you need this "
- "feature.");
- }
-
- /* By default, only *send* value lists that were not *received* by the
- * network plugin. */
- return (!received);
-} /* }}} _Bool check_send_notify_okay */
-
-static int network_dispatch_values (value_list_t *vl, /* {{{ */
- const char *username)
-{
- int status;
-
- if ((vl->time <= 0)
- || (strlen (vl->host) <= 0)
- || (strlen (vl->plugin) <= 0)
- || (strlen (vl->type) <= 0))
- return (-EINVAL);
-
- if (!check_receive_okay (vl))
- {
-#if COLLECT_DEBUG
- char name[6*DATA_MAX_NAME_LEN];
- FORMAT_VL (name, sizeof (name), vl);
- name[sizeof (name) - 1] = 0;
- DEBUG ("network plugin: network_dispatch_values: "
- "NOT dispatching %s.", name);
-#endif
- stats_values_not_dispatched++;
- return (0);
- }
-
- assert (vl->meta == NULL);
-
- vl->meta = meta_data_create ();
- if (vl->meta == NULL)
- {
- ERROR ("network plugin: meta_data_create failed.");
- return (-ENOMEM);
- }
-
- status = meta_data_add_boolean (vl->meta, "network:received", 1);
- if (status != 0)
- {
- ERROR ("network plugin: meta_data_add_boolean failed.");
- meta_data_destroy (vl->meta);
- vl->meta = NULL;
- return (status);
- }
-
- if (username != NULL)
- {
- status = meta_data_add_string (vl->meta, "network:username", username);
- if (status != 0)
- {
- ERROR ("network plugin: meta_data_add_string failed.");
- meta_data_destroy (vl->meta);
- vl->meta = NULL;
- return (status);
- }
- }
-
- plugin_dispatch_values (vl);
- stats_values_dispatched++;
-
- meta_data_destroy (vl->meta);
- vl->meta = NULL;
-
- return (0);
-} /* }}} int network_dispatch_values */
-
-static int network_dispatch_notification (notification_t *n) /* {{{ */
-{
- int status;
-
- assert (n->meta == NULL);
-
- status = plugin_notification_meta_add_boolean (n, "network:received", 1);
- if (status != 0)
- {
- ERROR ("network plugin: plugin_notification_meta_add_boolean failed.");
- plugin_notification_meta_free (n->meta);
- n->meta = NULL;
- return (status);
- }
-
- status = plugin_dispatch_notification (n);
-
- plugin_notification_meta_free (n->meta);
- n->meta = NULL;
-
- return (status);
-} /* }}} int network_dispatch_notification */
-
-#if HAVE_LIBGCRYPT
-static void network_init_gcrypt (void) /* {{{ */
-{
- /* http://lists.gnupg.org/pipermail/gcrypt-devel/2003-August/000458.html
- * Because you can't know in a library whether another library has
- * already initialized the library */
- if (gcry_control (GCRYCTL_ANY_INITIALIZATION_P))
- return;
-
- /* http://www.gnupg.org/documentation/manuals/gcrypt/Multi_002dThreading.html
- * To ensure thread-safety, it's important to set GCRYCTL_SET_THREAD_CBS
- * *before* initalizing Libgcrypt with gcry_check_version(), which itself must
- * be called before any other gcry_* function. GCRYCTL_ANY_INITIALIZATION_P
- * above doesn't count, as it doesn't implicitly initalize Libgcrypt.
- *
- * tl;dr: keep all these gry_* statements in this exact order please. */
-# if GCRYPT_VERSION_NUMBER < 0x010600
- gcry_control (GCRYCTL_SET_THREAD_CBS, &gcry_threads_pthread);
-# endif
- gcry_check_version (NULL);
- gcry_control (GCRYCTL_INIT_SECMEM, 32768);
- gcry_control (GCRYCTL_INITIALIZATION_FINISHED);
-} /* }}} void network_init_gcrypt */
-
-static gcry_cipher_hd_t network_get_aes256_cypher (sockent_t *se, /* {{{ */
- const void *iv, size_t iv_size, const char *username)
-{
- gcry_error_t err;
- gcry_cipher_hd_t *cyper_ptr;
- unsigned char password_hash[32];
-
- if (se->type == SOCKENT_TYPE_CLIENT)
- {
- cyper_ptr = &se->data.client.cypher;
- memcpy (password_hash, se->data.client.password_hash,
- sizeof (password_hash));
- }
- else
- {
- char *secret;
-
- cyper_ptr = &se->data.server.cypher;
-
- if (username == NULL)
- return (NULL);
-
- secret = fbh_get (se->data.server.userdb, username);
- if (secret == NULL)
- return (NULL);
-
- gcry_md_hash_buffer (GCRY_MD_SHA256,
- password_hash,
- secret, strlen (secret));
-
- sfree (secret);
- }
-
- if (*cyper_ptr == NULL)
- {
- err = gcry_cipher_open (cyper_ptr,
- GCRY_CIPHER_AES256, GCRY_CIPHER_MODE_OFB, /* flags = */ 0);
- if (err != 0)
- {
- ERROR ("network plugin: gcry_cipher_open returned: %s",
- gcry_strerror (err));
- *cyper_ptr = NULL;
- return (NULL);
- }
- }
- else
- {
- gcry_cipher_reset (*cyper_ptr);
- }
- assert (*cyper_ptr != NULL);
-
- err = gcry_cipher_setkey (*cyper_ptr,
- password_hash, sizeof (password_hash));
- if (err != 0)
- {
- ERROR ("network plugin: gcry_cipher_setkey returned: %s",
- gcry_strerror (err));
- gcry_cipher_close (*cyper_ptr);
- *cyper_ptr = NULL;
- return (NULL);
- }
-
- err = gcry_cipher_setiv (*cyper_ptr, iv, iv_size);
- if (err != 0)
- {
- ERROR ("network plugin: gcry_cipher_setkey returned: %s",
- gcry_strerror (err));
- gcry_cipher_close (*cyper_ptr);
- *cyper_ptr = NULL;
- return (NULL);
- }
-
- return (*cyper_ptr);
-} /* }}} int network_get_aes256_cypher */
-#endif /* HAVE_LIBGCRYPT */
-
-static int write_part_values (char **ret_buffer, int *ret_buffer_len,
- const data_set_t *ds, const value_list_t *vl)
-{
- char *packet_ptr;
- int packet_len;
- int num_values;
-
- part_header_t pkg_ph;
- uint16_t pkg_num_values;
- uint8_t *pkg_values_types;
- value_t *pkg_values;
-
- int offset;
- int i;
-
- num_values = vl->values_len;
- packet_len = sizeof (part_header_t) + sizeof (uint16_t)
- + (num_values * sizeof (uint8_t))
- + (num_values * sizeof (value_t));
-
- if (*ret_buffer_len < packet_len)
- return (-1);
-
- pkg_values_types = (uint8_t *) malloc (num_values * sizeof (uint8_t));
- if (pkg_values_types == NULL)
- {
- ERROR ("network plugin: write_part_values: malloc failed.");
- return (-1);
- }
-
- pkg_values = (value_t *) malloc (num_values * sizeof (value_t));
- if (pkg_values == NULL)
- {
- free (pkg_values_types);
- ERROR ("network plugin: write_part_values: malloc failed.");
- return (-1);
- }
-
- pkg_ph.type = htons (TYPE_VALUES);
- pkg_ph.length = htons (packet_len);
-
- pkg_num_values = htons ((uint16_t) vl->values_len);
-
- for (i = 0; i < num_values; i++)
- {
- pkg_values_types[i] = (uint8_t) ds->ds[i].type;
- switch (ds->ds[i].type)
- {
- case DS_TYPE_COUNTER:
- pkg_values[i].counter = htonll (vl->values[i].counter);
- break;
-
- case DS_TYPE_GAUGE:
- pkg_values[i].gauge = htond (vl->values[i].gauge);
- break;
-
- case DS_TYPE_DERIVE:
- pkg_values[i].derive = htonll (vl->values[i].derive);
- break;
-
- case DS_TYPE_ABSOLUTE:
- pkg_values[i].absolute = htonll (vl->values[i].absolute);
- break;
-
- default:
- free (pkg_values_types);
- free (pkg_values);
- ERROR ("network plugin: write_part_values: "
- "Unknown data source type: %i",
- ds->ds[i].type);
- return (-1);
- } /* switch (ds->ds[i].type) */
- } /* for (num_values) */
-
- /*
- * Use `memcpy' to write everything to the buffer, because the pointer
- * may be unaligned and some architectures, such as SPARC, can't handle
- * that.
- */
- packet_ptr = *ret_buffer;
- offset = 0;
- memcpy (packet_ptr + offset, &pkg_ph, sizeof (pkg_ph));
- offset += sizeof (pkg_ph);
- memcpy (packet_ptr + offset, &pkg_num_values, sizeof (pkg_num_values));
- offset += sizeof (pkg_num_values);
- memcpy (packet_ptr + offset, pkg_values_types, num_values * sizeof (uint8_t));
- offset += num_values * sizeof (uint8_t);
- memcpy (packet_ptr + offset, pkg_values, num_values * sizeof (value_t));
- offset += num_values * sizeof (value_t);
-
- assert (offset == packet_len);
-
- *ret_buffer = packet_ptr + packet_len;
- *ret_buffer_len -= packet_len;
-
- free (pkg_values_types);
- free (pkg_values);
-
- return (0);
-} /* int write_part_values */
-
-static int write_part_number (char **ret_buffer, int *ret_buffer_len,
- int type, uint64_t value)
-{
- char *packet_ptr;
- int packet_len;
-
- part_header_t pkg_head;
- uint64_t pkg_value;
-
- int offset;
-
- packet_len = sizeof (pkg_head) + sizeof (pkg_value);
-
- if (*ret_buffer_len < packet_len)
- return (-1);
-
- pkg_head.type = htons (type);
- pkg_head.length = htons (packet_len);
- pkg_value = htonll (value);
-
- packet_ptr = *ret_buffer;
- offset = 0;
- memcpy (packet_ptr + offset, &pkg_head, sizeof (pkg_head));
- offset += sizeof (pkg_head);
- memcpy (packet_ptr + offset, &pkg_value, sizeof (pkg_value));
- offset += sizeof (pkg_value);
-
- assert (offset == packet_len);
-
- *ret_buffer = packet_ptr + packet_len;
- *ret_buffer_len -= packet_len;
-
- return (0);
-} /* int write_part_number */
-
-static int write_part_string (char **ret_buffer, int *ret_buffer_len,
- int type, const char *str, int str_len)
-{
- char *buffer;
- int buffer_len;
-
- uint16_t pkg_type;
- uint16_t pkg_length;
-
- int offset;
-
- buffer_len = 2 * sizeof (uint16_t) + str_len + 1;
- if (*ret_buffer_len < buffer_len)
- return (-1);
-
- pkg_type = htons (type);
- pkg_length = htons (buffer_len);
-
- buffer = *ret_buffer;
- offset = 0;
- memcpy (buffer + offset, (void *) &pkg_type, sizeof (pkg_type));
- offset += sizeof (pkg_type);
- memcpy (buffer + offset, (void *) &pkg_length, sizeof (pkg_length));
- offset += sizeof (pkg_length);
- memcpy (buffer + offset, str, str_len);
- offset += str_len;
- memset (buffer + offset, '\0', 1);
- offset += 1;
-
- assert (offset == buffer_len);
-
- *ret_buffer = buffer + buffer_len;
- *ret_buffer_len -= buffer_len;
-
- return (0);
-} /* int write_part_string */
-
-static int parse_part_values (void **ret_buffer, size_t *ret_buffer_len,
- value_t **ret_values, int *ret_num_values)
-{
- char *buffer = *ret_buffer;
- size_t buffer_len = *ret_buffer_len;
-
- uint16_t tmp16;
- size_t exp_size;
- int i;
-
- uint16_t pkg_length;
- uint16_t pkg_type;
- uint16_t pkg_numval;
-
- uint8_t *pkg_types;
- value_t *pkg_values;
-
- if (buffer_len < 15)
- {
- NOTICE ("network plugin: packet is too short: "
- "buffer_len = %zu", buffer_len);
- return (-1);
- }
-
- memcpy ((void *) &tmp16, buffer, sizeof (tmp16));
- buffer += sizeof (tmp16);
- pkg_type = ntohs (tmp16);
-
- memcpy ((void *) &tmp16, buffer, sizeof (tmp16));
- buffer += sizeof (tmp16);
- pkg_length = ntohs (tmp16);
-
- memcpy ((void *) &tmp16, buffer, sizeof (tmp16));
- buffer += sizeof (tmp16);
- pkg_numval = ntohs (tmp16);
-
- assert (pkg_type == TYPE_VALUES);
-
- exp_size = 3 * sizeof (uint16_t)
- + pkg_numval * (sizeof (uint8_t) + sizeof (value_t));
- if (buffer_len < exp_size)
- {
- WARNING ("network plugin: parse_part_values: "
- "Packet too short: "
- "Chunk of size %zu expected, "
- "but buffer has only %zu bytes left.",
- exp_size, buffer_len);
- return (-1);
- }
-
- if (pkg_length != exp_size)
- {
- WARNING ("network plugin: parse_part_values: "
- "Length and number of values "
- "in the packet don't match.");
- return (-1);
- }
-
- pkg_types = (uint8_t *) malloc (pkg_numval * sizeof (uint8_t));
- pkg_values = (value_t *) malloc (pkg_numval * sizeof (value_t));
- if ((pkg_types == NULL) || (pkg_values == NULL))
- {
- sfree (pkg_types);
- sfree (pkg_values);
- ERROR ("network plugin: parse_part_values: malloc failed.");
- return (-1);
- }
-
- memcpy ((void *) pkg_types, (void *) buffer, pkg_numval * sizeof (uint8_t));
- buffer += pkg_numval * sizeof (uint8_t);
- memcpy ((void *) pkg_values, (void *) buffer, pkg_numval * sizeof (value_t));
- buffer += pkg_numval * sizeof (value_t);
-
- for (i = 0; i < pkg_numval; i++)
- {
- switch (pkg_types[i])
- {
- case DS_TYPE_COUNTER:
- pkg_values[i].counter = (counter_t) ntohll (pkg_values[i].counter);
- break;
-
- case DS_TYPE_GAUGE:
- pkg_values[i].gauge = (gauge_t) ntohd (pkg_values[i].gauge);
- break;
-
- case DS_TYPE_DERIVE:
- pkg_values[i].derive = (derive_t) ntohll (pkg_values[i].derive);
- break;
-
- case DS_TYPE_ABSOLUTE:
- pkg_values[i].absolute = (absolute_t) ntohll (pkg_values[i].absolute);
- break;
-
- default:
- NOTICE ("network plugin: parse_part_values: "
- "Don't know how to handle data source type %"PRIu8,
- pkg_types[i]);
- sfree (pkg_types);
- sfree (pkg_values);
- return (-1);
- } /* switch (pkg_types[i]) */
- }
-
- *ret_buffer = buffer;
- *ret_buffer_len = buffer_len - pkg_length;
- *ret_num_values = pkg_numval;
- *ret_values = pkg_values;
-
- sfree (pkg_types);
-
- return (0);
-} /* int parse_part_values */
-
-static int parse_part_number (void **ret_buffer, size_t *ret_buffer_len,
- uint64_t *value)
-{
- char *buffer = *ret_buffer;
- size_t buffer_len = *ret_buffer_len;
-
- uint16_t tmp16;
- uint64_t tmp64;
- size_t exp_size = 2 * sizeof (uint16_t) + sizeof (uint64_t);
-
- uint16_t pkg_length;
-
- if (buffer_len < exp_size)
- {
- WARNING ("network plugin: parse_part_number: "
- "Packet too short: "
- "Chunk of size %zu expected, "
- "but buffer has only %zu bytes left.",
- exp_size, buffer_len);
- return (-1);
- }
-
- memcpy ((void *) &tmp16, buffer, sizeof (tmp16));
- buffer += sizeof (tmp16);
- /* pkg_type = ntohs (tmp16); */
-
- memcpy ((void *) &tmp16, buffer, sizeof (tmp16));
- buffer += sizeof (tmp16);
- pkg_length = ntohs (tmp16);
-
- memcpy ((void *) &tmp64, buffer, sizeof (tmp64));
- buffer += sizeof (tmp64);
- *value = ntohll (tmp64);
-
- *ret_buffer = buffer;
- *ret_buffer_len = buffer_len - pkg_length;
-
- return (0);
-} /* int parse_part_number */
-
-static int parse_part_string (void **ret_buffer, size_t *ret_buffer_len,
- char *output, size_t const output_len)
-{
- char *buffer = *ret_buffer;
- size_t buffer_len = *ret_buffer_len;
-
- uint16_t tmp16;
- size_t const header_size = 2 * sizeof (uint16_t);
-
- uint16_t pkg_length;
- size_t payload_size;
-
- if (output_len <= 0)
- return (EINVAL);
-
- if (buffer_len < header_size)
- {
- WARNING ("network plugin: parse_part_string: "
- "Packet too short: "
- "Chunk of at least size %zu expected, "
- "but buffer has only %zu bytes left.",
- header_size, buffer_len);
- return (-1);
- }
-
- memcpy ((void *) &tmp16, buffer, sizeof (tmp16));
- buffer += sizeof (tmp16);
- /* pkg_type = ntohs (tmp16); */
-
- memcpy ((void *) &tmp16, buffer, sizeof (tmp16));
- buffer += sizeof (tmp16);
- pkg_length = ntohs (tmp16);
- payload_size = ((size_t) pkg_length) - header_size;
-
- /* Check that packet fits in the input buffer */
- if (pkg_length > buffer_len)
- {
- WARNING ("network plugin: parse_part_string: "
- "Packet too big: "
- "Chunk of size %"PRIu16" received, "
- "but buffer has only %zu bytes left.",
- pkg_length, buffer_len);
- return (-1);
- }
-
- /* Check that pkg_length is in the valid range */
- if (pkg_length <= header_size)
- {
- WARNING ("network plugin: parse_part_string: "
- "Packet too short: "
- "Header claims this packet is only %hu "
- "bytes long.", pkg_length);
- return (-1);
- }
-
- /* Check that the package data fits into the output buffer.
- * The previous if-statement ensures that:
- * `pkg_length > header_size' */
- if (output_len < payload_size)
- {
- WARNING ("network plugin: parse_part_string: "
- "Buffer too small: "
- "Output buffer holds %zu bytes, "
- "which is too small to hold the received "
- "%zu byte string.",
- output_len, payload_size);
- return (-1);
- }
-
- /* All sanity checks successfull, let's copy the data over */
- memcpy ((void *) output, (void *) buffer, payload_size);
- buffer += payload_size;
-
- /* For some very weird reason '\0' doesn't do the trick on SPARC in
- * this statement. */
- if (output[payload_size - 1] != 0)
- {
- WARNING ("network plugin: parse_part_string: "
- "Received string does not end "
- "with a NULL-byte.");
- return (-1);
- }
-
- *ret_buffer = buffer;
- *ret_buffer_len = buffer_len - pkg_length;
-
- return (0);
-} /* int parse_part_string */
-
-/* Forward declaration: parse_part_sign_sha256 and parse_part_encr_aes256 call
- * parse_packet and vice versa. */
-#define PP_SIGNED 0x01
-#define PP_ENCRYPTED 0x02
-static int parse_packet (sockent_t *se,
- void *buffer, size_t buffer_size, int flags,
- const char *username);
-
-#define BUFFER_READ(p,s) do { \
- memcpy ((p), buffer + buffer_offset, (s)); \
- buffer_offset += (s); \
-} while (0)
-
-#if HAVE_LIBGCRYPT
-static int parse_part_sign_sha256 (sockent_t *se, /* {{{ */
- void **ret_buffer, size_t *ret_buffer_len, int flags)
-{
- static c_complain_t complain_no_users = C_COMPLAIN_INIT_STATIC;
-
- char *buffer;
- size_t buffer_len;
- size_t buffer_offset;
-
- size_t username_len;
- char *secret;
-
- part_signature_sha256_t pss;
- uint16_t pss_head_length;
- char hash[sizeof (pss.hash)];
-
- gcry_md_hd_t hd;
- gcry_error_t err;
- unsigned char *hash_ptr;
-
- buffer = *ret_buffer;
- buffer_len = *ret_buffer_len;
- buffer_offset = 0;
-
- if (se->data.server.userdb == NULL)
- {
- c_complain (LOG_NOTICE, &complain_no_users,
- "network plugin: Received signed network packet but can't verify it "
- "because no user DB has been configured. Will accept it.");
- return (0);
- }
-
- /* Check if the buffer has enough data for this structure. */
- if (buffer_len <= PART_SIGNATURE_SHA256_SIZE)
- return (-ENOMEM);
-
- /* Read type and length header */
- BUFFER_READ (&pss.head.type, sizeof (pss.head.type));
- BUFFER_READ (&pss.head.length, sizeof (pss.head.length));
- pss_head_length = ntohs (pss.head.length);
-
- /* Check if the `pss_head_length' is within bounds. */
- if ((pss_head_length <= PART_SIGNATURE_SHA256_SIZE)
- || (pss_head_length > buffer_len))
- {
- ERROR ("network plugin: HMAC-SHA-256 with invalid length received.");
- return (-1);
- }
-
- /* Copy the hash. */
- BUFFER_READ (pss.hash, sizeof (pss.hash));
-
- /* Calculate username length (without null byte) and allocate memory */
- username_len = pss_head_length - PART_SIGNATURE_SHA256_SIZE;
- pss.username = malloc (username_len + 1);
- if (pss.username == NULL)
- return (-ENOMEM);
-
- /* Read the username */
- BUFFER_READ (pss.username, username_len);
- pss.username[username_len] = 0;
-
- assert (buffer_offset == pss_head_length);
-
- /* Query the password */
- secret = fbh_get (se->data.server.userdb, pss.username);
- if (secret == NULL)
- {
- ERROR ("network plugin: Unknown user: %s", pss.username);
- sfree (pss.username);
- return (-ENOENT);
- }
-
- /* Create a hash device and check the HMAC */
- hd = NULL;
- err = gcry_md_open (&hd, GCRY_MD_SHA256, GCRY_MD_FLAG_HMAC);
- if (err != 0)
- {
- ERROR ("network plugin: Creating HMAC-SHA-256 object failed: %s",
- gcry_strerror (err));
- sfree (secret);
- sfree (pss.username);
- return (-1);
- }
-
- err = gcry_md_setkey (hd, secret, strlen (secret));
- if (err != 0)
- {
- ERROR ("network plugin: gcry_md_setkey failed: %s", gcry_strerror (err));
- gcry_md_close (hd);
- sfree (secret);
- sfree (pss.username);
- return (-1);
- }
-
- gcry_md_write (hd,
- buffer + PART_SIGNATURE_SHA256_SIZE,
- buffer_len - PART_SIGNATURE_SHA256_SIZE);
- hash_ptr = gcry_md_read (hd, GCRY_MD_SHA256);
- if (hash_ptr == NULL)
- {
- ERROR ("network plugin: gcry_md_read failed.");
- gcry_md_close (hd);
- sfree (secret);
- sfree (pss.username);
- return (-1);
- }
- memcpy (hash, hash_ptr, sizeof (hash));
-
- /* Clean up */
- gcry_md_close (hd);
- hd = NULL;
-
- if (memcmp (pss.hash, hash, sizeof (pss.hash)) != 0)
- {
- WARNING ("network plugin: Verifying HMAC-SHA-256 signature failed: "
- "Hash mismatch.");
- }
- else
- {
- parse_packet (se, buffer + buffer_offset, buffer_len - buffer_offset,
- flags | PP_SIGNED, pss.username);
- }
-
- sfree (secret);
- sfree (pss.username);
-
- *ret_buffer = buffer + buffer_len;
- *ret_buffer_len = 0;
-
- return (0);
-} /* }}} int parse_part_sign_sha256 */
-/* #endif HAVE_LIBGCRYPT */
-
-#else /* if !HAVE_LIBGCRYPT */
-static int parse_part_sign_sha256 (sockent_t *se, /* {{{ */
- void **ret_buffer, size_t *ret_buffer_size, int flags)
-{
- static int warning_has_been_printed = 0;
-
- char *buffer;
- size_t buffer_size;
- size_t buffer_offset;
- uint16_t part_len;
-
- part_signature_sha256_t pss;
-
- buffer = *ret_buffer;
- buffer_size = *ret_buffer_size;
- buffer_offset = 0;
-
- if (buffer_size <= PART_SIGNATURE_SHA256_SIZE)
- return (-ENOMEM);
-
- BUFFER_READ (&pss.head.type, sizeof (pss.head.type));
- BUFFER_READ (&pss.head.length, sizeof (pss.head.length));
- part_len = ntohs (pss.head.length);
-
- if ((part_len <= PART_SIGNATURE_SHA256_SIZE)
- || (part_len > buffer_size))
- return (-EINVAL);
-
- if (warning_has_been_printed == 0)
- {
- WARNING ("network plugin: Received signed packet, but the network "
- "plugin was not linked with libgcrypt, so I cannot "
- "verify the signature. The packet will be accepted.");
- warning_has_been_printed = 1;
- }
-
- parse_packet (se, buffer + part_len, buffer_size - part_len, flags,
- /* username = */ NULL);
-
- *ret_buffer = buffer + buffer_size;
- *ret_buffer_size = 0;
-
- return (0);
-} /* }}} int parse_part_sign_sha256 */
-#endif /* !HAVE_LIBGCRYPT */
-
-#if HAVE_LIBGCRYPT
-static int parse_part_encr_aes256 (sockent_t *se, /* {{{ */
- void **ret_buffer, size_t *ret_buffer_len,
- int flags)
-{
- char *buffer = *ret_buffer;
- size_t buffer_len = *ret_buffer_len;
- size_t payload_len;
- size_t part_size;
- size_t buffer_offset;
- uint16_t username_len;
- part_encryption_aes256_t pea;
- unsigned char hash[sizeof (pea.hash)];
-
- gcry_cipher_hd_t cypher;
- gcry_error_t err;
-
- /* Make sure at least the header if available. */
- if (buffer_len <= PART_ENCRYPTION_AES256_SIZE)
- {
- NOTICE ("network plugin: parse_part_encr_aes256: "
- "Discarding short packet.");
- return (-1);
- }
-
- buffer_offset = 0;
-
- /* Copy the unencrypted information into `pea'. */
- BUFFER_READ (&pea.head.type, sizeof (pea.head.type));
- BUFFER_READ (&pea.head.length, sizeof (pea.head.length));
-
- /* Check the `part size'. */
- part_size = ntohs (pea.head.length);
- if ((part_size <= PART_ENCRYPTION_AES256_SIZE)
- || (part_size > buffer_len))
- {
- NOTICE ("network plugin: parse_part_encr_aes256: "
- "Discarding part with invalid size.");
- return (-1);
- }
-
- /* Read the username */
- BUFFER_READ (&username_len, sizeof (username_len));
- username_len = ntohs (username_len);
-
- if ((username_len <= 0)
- || (username_len > (part_size - (PART_ENCRYPTION_AES256_SIZE + 1))))
- {
- NOTICE ("network plugin: parse_part_encr_aes256: "
- "Discarding part with invalid username length.");
- return (-1);
- }
-
- assert (username_len > 0);
- pea.username = malloc (username_len + 1);
- if (pea.username == NULL)
- return (-ENOMEM);
- BUFFER_READ (pea.username, username_len);
- pea.username[username_len] = 0;
-
- /* Last but not least, the initialization vector */
- BUFFER_READ (pea.iv, sizeof (pea.iv));
-
- /* Make sure we are at the right position */
- assert (buffer_offset == (username_len +
- PART_ENCRYPTION_AES256_SIZE - sizeof (pea.hash)));
-
- cypher = network_get_aes256_cypher (se, pea.iv, sizeof (pea.iv),
- pea.username);
- if (cypher == NULL)
- {
- sfree (pea.username);
- return (-1);
- }
-
- payload_len = part_size - (PART_ENCRYPTION_AES256_SIZE + username_len);
- assert (payload_len > 0);
-
- /* Decrypt the packet in-place */
- err = gcry_cipher_decrypt (cypher,
- buffer + buffer_offset,
- part_size - buffer_offset,
- /* in = */ NULL, /* in len = */ 0);
- if (err != 0)
- {
- sfree (pea.username);
- ERROR ("network plugin: gcry_cipher_decrypt returned: %s",
- gcry_strerror (err));
- return (-1);
- }
-
- /* Read the hash */
- BUFFER_READ (pea.hash, sizeof (pea.hash));
-
- /* Make sure we're at the right position - again */
- assert (buffer_offset == (username_len + PART_ENCRYPTION_AES256_SIZE));
- assert (buffer_offset == (part_size - payload_len));
-
- /* Check hash sum */
- memset (hash, 0, sizeof (hash));
- gcry_md_hash_buffer (GCRY_MD_SHA1, hash,
- buffer + buffer_offset, payload_len);
- if (memcmp (hash, pea.hash, sizeof (hash)) != 0)
- {
- sfree (pea.username);
- ERROR ("network plugin: Decryption failed: Checksum mismatch.");
- return (-1);
- }
-
- parse_packet (se, buffer + buffer_offset, payload_len,
- flags | PP_ENCRYPTED, pea.username);
-
- /* XXX: Free pea.username?!? */
-
- /* Update return values */
- *ret_buffer = buffer + part_size;
- *ret_buffer_len = buffer_len - part_size;
-
- sfree (pea.username);
-
- return (0);
-} /* }}} int parse_part_encr_aes256 */
-/* #endif HAVE_LIBGCRYPT */
-
-#else /* if !HAVE_LIBGCRYPT */
-static int parse_part_encr_aes256 (sockent_t *se, /* {{{ */
- void **ret_buffer, size_t *ret_buffer_size, int flags)
-{
- static int warning_has_been_printed = 0;
-
- char *buffer;
- size_t buffer_size;
- size_t buffer_offset;
-
- part_header_t ph;
- size_t ph_length;
-
- buffer = *ret_buffer;
- buffer_size = *ret_buffer_size;
- buffer_offset = 0;
-
- /* parse_packet assures this minimum size. */
- assert (buffer_size >= (sizeof (ph.type) + sizeof (ph.length)));
-
- BUFFER_READ (&ph.type, sizeof (ph.type));
- BUFFER_READ (&ph.length, sizeof (ph.length));
- ph_length = ntohs (ph.length);
-
- if ((ph_length <= PART_ENCRYPTION_AES256_SIZE)
- || (ph_length > buffer_size))
- {
- ERROR ("network plugin: AES-256 encrypted part "
- "with invalid length received.");
- return (-1);
- }
-
- if (warning_has_been_printed == 0)
- {
- WARNING ("network plugin: Received encrypted packet, but the network "
- "plugin was not linked with libgcrypt, so I cannot "
- "decrypt it. The part will be discarded.");
- warning_has_been_printed = 1;
- }
-
- *ret_buffer += ph_length;
- *ret_buffer_size -= ph_length;
-
- return (0);
-} /* }}} int parse_part_encr_aes256 */
-#endif /* !HAVE_LIBGCRYPT */
-
-#undef BUFFER_READ
-
-static int parse_packet (sockent_t *se, /* {{{ */
- void *buffer, size_t buffer_size, int flags,
- const char *username)
-{
- int status;
-
- value_list_t vl = VALUE_LIST_INIT;
- notification_t n;
-
-#if HAVE_LIBGCRYPT
- int packet_was_signed = (flags & PP_SIGNED);
- int packet_was_encrypted = (flags & PP_ENCRYPTED);
- int printed_ignore_warning = 0;
-#endif /* HAVE_LIBGCRYPT */
-
-
- memset (&vl, '\0', sizeof (vl));
- memset (&n, '\0', sizeof (n));
- status = 0;
-
- while ((status == 0) && (0 < buffer_size)
- && ((unsigned int) buffer_size > sizeof (part_header_t)))
- {
- uint16_t pkg_length;
- uint16_t pkg_type;
-
- memcpy ((void *) &pkg_type,
- (void *) buffer,
- sizeof (pkg_type));
- memcpy ((void *) &pkg_length,
- (void *) (buffer + sizeof (pkg_type)),
- sizeof (pkg_length));
-
- pkg_length = ntohs (pkg_length);
- pkg_type = ntohs (pkg_type);
-
- if (pkg_length > buffer_size)
- break;
- /* Ensure that this loop terminates eventually */
- if (pkg_length < (2 * sizeof (uint16_t)))
- break;
-
- if (pkg_type == TYPE_ENCR_AES256)
- {
- status = parse_part_encr_aes256 (se,
- &buffer, &buffer_size, flags);
- if (status != 0)
- {
- ERROR ("network plugin: Decrypting AES256 "
- "part failed "
- "with status %i.", status);
- break;
- }
- }
-#if HAVE_LIBGCRYPT
- else if ((se->data.server.security_level == SECURITY_LEVEL_ENCRYPT)
- && (packet_was_encrypted == 0))
- {
- if (printed_ignore_warning == 0)
- {
- INFO ("network plugin: Unencrypted packet or "
- "part has been ignored.");
- printed_ignore_warning = 1;
- }
- buffer = ((char *) buffer) + pkg_length;
- continue;
- }
-#endif /* HAVE_LIBGCRYPT */
- else if (pkg_type == TYPE_SIGN_SHA256)
- {
- status = parse_part_sign_sha256 (se,
- &buffer, &buffer_size, flags);
- if (status != 0)
- {
- ERROR ("network plugin: Verifying HMAC-SHA-256 "
- "signature failed "
- "with status %i.", status);
- break;
- }
- }
-#if HAVE_LIBGCRYPT
- else if ((se->data.server.security_level == SECURITY_LEVEL_SIGN)
- && (packet_was_encrypted == 0)
- && (packet_was_signed == 0))
- {
- if (printed_ignore_warning == 0)
- {
- INFO ("network plugin: Unsigned packet or "
- "part has been ignored.");
- printed_ignore_warning = 1;
- }
- buffer = ((char *) buffer) + pkg_length;
- continue;
- }
-#endif /* HAVE_LIBGCRYPT */
- else if (pkg_type == TYPE_VALUES)
- {
- status = parse_part_values (&buffer, &buffer_size,
- &vl.values, &vl.values_len);
- if (status != 0)
- break;
-
- network_dispatch_values (&vl, username);
-
- sfree (vl.values);
- }
- else if (pkg_type == TYPE_TIME)
- {
- uint64_t tmp = 0;
- status = parse_part_number (&buffer, &buffer_size,
- &tmp);
- if (status == 0)
- {
- vl.time = TIME_T_TO_CDTIME_T (tmp);
- n.time = TIME_T_TO_CDTIME_T (tmp);
- }
- }
- else if (pkg_type == TYPE_TIME_HR)
- {
- uint64_t tmp = 0;
- status = parse_part_number (&buffer, &buffer_size,
- &tmp);
- if (status == 0)
- {
- vl.time = (cdtime_t) tmp;
- n.time = (cdtime_t) tmp;
- }
- }
- else if (pkg_type == TYPE_INTERVAL)
- {
- uint64_t tmp = 0;
- status = parse_part_number (&buffer, &buffer_size,
- &tmp);
- if (status == 0)
- vl.interval = TIME_T_TO_CDTIME_T (tmp);
- }
- else if (pkg_type == TYPE_INTERVAL_HR)
- {
- uint64_t tmp = 0;
- status = parse_part_number (&buffer, &buffer_size,
- &tmp);
- if (status == 0)
- vl.interval = (cdtime_t) tmp;
- }
- else if (pkg_type == TYPE_HOST)
- {
- status = parse_part_string (&buffer, &buffer_size,
- vl.host, sizeof (vl.host));
- if (status == 0)
- sstrncpy (n.host, vl.host, sizeof (n.host));
- }
- else if (pkg_type == TYPE_PLUGIN)
- {
- status = parse_part_string (&buffer, &buffer_size,
- vl.plugin, sizeof (vl.plugin));
- if (status == 0)
- sstrncpy (n.plugin, vl.plugin,
- sizeof (n.plugin));
- }
- else if (pkg_type == TYPE_PLUGIN_INSTANCE)
- {
- status = parse_part_string (&buffer, &buffer_size,
- vl.plugin_instance,
- sizeof (vl.plugin_instance));
- if (status == 0)
- sstrncpy (n.plugin_instance,
- vl.plugin_instance,
- sizeof (n.plugin_instance));
- }
- else if (pkg_type == TYPE_TYPE)
- {
- status = parse_part_string (&buffer, &buffer_size,
- vl.type, sizeof (vl.type));
- if (status == 0)
- sstrncpy (n.type, vl.type, sizeof (n.type));
- }
- else if (pkg_type == TYPE_TYPE_INSTANCE)
- {
- status = parse_part_string (&buffer, &buffer_size,
- vl.type_instance,
- sizeof (vl.type_instance));
- if (status == 0)
- sstrncpy (n.type_instance, vl.type_instance,
- sizeof (n.type_instance));
- }
- else if (pkg_type == TYPE_MESSAGE)
- {
- status = parse_part_string (&buffer, &buffer_size,
- n.message, sizeof (n.message));
-
- if (status != 0)
- {
- /* do nothing */
- }
- else if ((n.severity != NOTIF_FAILURE)
- && (n.severity != NOTIF_WARNING)
- && (n.severity != NOTIF_OKAY))
- {
- INFO ("network plugin: "
- "Ignoring notification with "
- "unknown severity %i.",
- n.severity);
- }
- else if (n.time <= 0)
- {
- INFO ("network plugin: "
- "Ignoring notification with "
- "time == 0.");
- }
- else if (strlen (n.message) <= 0)
- {
- INFO ("network plugin: "
- "Ignoring notification with "
- "an empty message.");
- }
- else
- {
- network_dispatch_notification (&n);
- }
- }
- else if (pkg_type == TYPE_SEVERITY)
- {
- uint64_t tmp = 0;
- status = parse_part_number (&buffer, &buffer_size,
- &tmp);
- if (status == 0)
- n.severity = (int) tmp;
- }
- else
- {
- DEBUG ("network plugin: parse_packet: Unknown part"
- " type: 0x%04hx", pkg_type);
- buffer = ((char *) buffer) + pkg_length;
- }
- } /* while (buffer_size > sizeof (part_header_t)) */
-
- if (status == 0 && buffer_size > 0)
- WARNING ("network plugin: parse_packet: Received truncated "
- "packet, try increasing `MaxPacketSize'");
-
- return (status);
-} /* }}} int parse_packet */
-
-static void free_sockent_client (struct sockent_client *sec) /* {{{ */
-{
- if (sec->fd >= 0)
- {
- close (sec->fd);
- sec->fd = -1;
- }
- sfree (sec->addr);
-#if HAVE_LIBGCRYPT
- sfree (sec->username);
- sfree (sec->password);
- if (sec->cypher != NULL)
- gcry_cipher_close (sec->cypher);
-#endif
-} /* }}} void free_sockent_client */
-
-static void free_sockent_server (struct sockent_server *ses) /* {{{ */
-{
- size_t i;
-
- for (i = 0; i < ses->fd_num; i++)
- {
- if (ses->fd[i] >= 0)
- {
- close (ses->fd[i]);
- ses->fd[i] = -1;
- }
- }
-
- sfree (ses->fd);
-#if HAVE_LIBGCRYPT
- sfree (ses->auth_file);
- fbh_destroy (ses->userdb);
- if (ses->cypher != NULL)
- gcry_cipher_close (ses->cypher);
-#endif
-} /* }}} void free_sockent_server */
-
-static void sockent_destroy (sockent_t *se) /* {{{ */
-{
- sockent_t *next;
-
- DEBUG ("network plugin: sockent_destroy (se = %p);", (void *) se);
-
- while (se != NULL)
- {
- next = se->next;
-
- sfree (se->node);
- sfree (se->service);
-
- if (se->type == SOCKENT_TYPE_CLIENT)
- free_sockent_client (&se->data.client);
- else
- free_sockent_server (&se->data.server);
-
- sfree (se);
- se = next;
- }
-} /* }}} void sockent_destroy */
-
-/*
- * int network_set_ttl
- *
- * Set the `IP_MULTICAST_TTL', `IP_TTL', `IPV6_MULTICAST_HOPS' or
- * `IPV6_UNICAST_HOPS', depending on which option is applicable.
- *
- * The `struct addrinfo' is used to destinguish between unicast and multicast
- * sockets.
- */
-static int network_set_ttl (const sockent_t *se, const struct addrinfo *ai)
-{
- DEBUG ("network plugin: network_set_ttl: network_config_ttl = %i;",
- network_config_ttl);
-
- assert (se->type == SOCKENT_TYPE_CLIENT);
-
- if ((network_config_ttl < 1) || (network_config_ttl > 255))
- return (-1);
-
- if (ai->ai_family == AF_INET)
- {
- struct sockaddr_in *addr = (struct sockaddr_in *) ai->ai_addr;
- int optname;
-
- if (IN_MULTICAST (ntohl (addr->sin_addr.s_addr)))
- optname = IP_MULTICAST_TTL;
- else
- optname = IP_TTL;
-
- if (setsockopt (se->data.client.fd, IPPROTO_IP, optname,
- &network_config_ttl,
- sizeof (network_config_ttl)) != 0)
- {
- char errbuf[1024];
- ERROR ("network plugin: setsockopt (ipv4-ttl): %s",
- sstrerror (errno, errbuf, sizeof (errbuf)));
- return (-1);
- }
- }
- else if (ai->ai_family == AF_INET6)
- {
- /* Useful example: http://gsyc.escet.urjc.es/~eva/IPv6-web/examples/mcast.html */
- struct sockaddr_in6 *addr = (struct sockaddr_in6 *) ai->ai_addr;
- int optname;
-
- if (IN6_IS_ADDR_MULTICAST (&addr->sin6_addr))
- optname = IPV6_MULTICAST_HOPS;
- else
- optname = IPV6_UNICAST_HOPS;
-
- if (setsockopt (se->data.client.fd, IPPROTO_IPV6, optname,
- &network_config_ttl,
- sizeof (network_config_ttl)) != 0)
- {
- char errbuf[1024];
- ERROR ("network plugin: setsockopt(ipv6-ttl): %s",
- sstrerror (errno, errbuf,
- sizeof (errbuf)));
- return (-1);
- }
- }
-
- return (0);
-} /* int network_set_ttl */
-
-static int network_set_interface (const sockent_t *se, const struct addrinfo *ai) /* {{{ */
-{
- DEBUG ("network plugin: network_set_interface: interface index = %i;",
- se->interface);
-
- assert (se->type == SOCKENT_TYPE_CLIENT);
-
- if (ai->ai_family == AF_INET)
- {
- struct sockaddr_in *addr = (struct sockaddr_in *) ai->ai_addr;
-
- if (IN_MULTICAST (ntohl (addr->sin_addr.s_addr)))
- {
-#if HAVE_STRUCT_IP_MREQN_IMR_IFINDEX
- /* If possible, use the "ip_mreqn" structure which has
- * an "interface index" member. Using the interface
- * index is preferred here, because of its similarity
- * to the way IPv6 handles this. Unfortunately, it
- * appears not to be portable. */
- struct ip_mreqn mreq;
-
- memset (&mreq, 0, sizeof (mreq));
- mreq.imr_multiaddr.s_addr = addr->sin_addr.s_addr;
- mreq.imr_address.s_addr = ntohl (INADDR_ANY);
- mreq.imr_ifindex = se->interface;
-#else
- struct ip_mreq mreq;
-
- memset (&mreq, 0, sizeof (mreq));
- mreq.imr_multiaddr.s_addr = addr->sin_addr.s_addr;
- mreq.imr_interface.s_addr = ntohl (INADDR_ANY);
-#endif
-
- if (setsockopt (se->data.client.fd, IPPROTO_IP, IP_MULTICAST_IF,
- &mreq, sizeof (mreq)) != 0)
- {
- char errbuf[1024];
- ERROR ("network plugin: setsockopt (ipv4-multicast-if): %s",
- sstrerror (errno, errbuf, sizeof (errbuf)));
- return (-1);
- }
-
- return (0);
- }
- }
- else if (ai->ai_family == AF_INET6)
- {
- struct sockaddr_in6 *addr = (struct sockaddr_in6 *) ai->ai_addr;
-
- if (IN6_IS_ADDR_MULTICAST (&addr->sin6_addr))
- {
- if (setsockopt (se->data.client.fd, IPPROTO_IPV6, IPV6_MULTICAST_IF,
- &se->interface,
- sizeof (se->interface)) != 0)
- {
- char errbuf[1024];
- ERROR ("network plugin: setsockopt (ipv6-multicast-if): %s",
- sstrerror (errno, errbuf,
- sizeof (errbuf)));
- return (-1);
- }
-
- return (0);
- }
- }
-
- /* else: Not a multicast interface. */
- if (se->interface != 0)
- {
-#if defined(HAVE_IF_INDEXTONAME) && HAVE_IF_INDEXTONAME && defined(SO_BINDTODEVICE)
- char interface_name[IFNAMSIZ];
-
- if (if_indextoname (se->interface, interface_name) == NULL)
- return (-1);
-
- DEBUG ("network plugin: Binding socket to interface %s", interface_name);
-
- if (setsockopt (se->data.client.fd, SOL_SOCKET, SO_BINDTODEVICE,
- interface_name,
- sizeof(interface_name)) == -1 )
- {
- char errbuf[1024];
- ERROR ("network plugin: setsockopt (bind-if): %s",
- sstrerror (errno, errbuf, sizeof (errbuf)));
- return (-1);
- }
-/* #endif HAVE_IF_INDEXTONAME && SO_BINDTODEVICE */
-
-#else
- WARNING ("network plugin: Cannot set the interface on a unicast "
- "socket because "
-# if !defined(SO_BINDTODEVICE)
- "the \"SO_BINDTODEVICE\" socket option "
-# else
- "the \"if_indextoname\" function "
-# endif
- "is not available on your system.");
-#endif
-
- }
-
- return (0);
-} /* }}} network_set_interface */
-
-static int network_bind_socket (int fd, const struct addrinfo *ai, const int interface_idx)
-{
-#if KERNEL_SOLARIS
- char loop = 0;
-#else
- int loop = 0;
-#endif
- int yes = 1;
-
- /* allow multiple sockets to use the same PORT number */
- if (setsockopt (fd, SOL_SOCKET, SO_REUSEADDR,
- &yes, sizeof(yes)) == -1) {
- char errbuf[1024];
- ERROR ("network plugin: setsockopt (reuseaddr): %s",
- sstrerror (errno, errbuf, sizeof (errbuf)));
- return (-1);
- }
-
- DEBUG ("fd = %i; calling `bind'", fd);
-
- if (bind (fd, ai->ai_addr, ai->ai_addrlen) == -1)
- {
- char errbuf[1024];
- ERROR ("bind: %s",
- sstrerror (errno, errbuf, sizeof (errbuf)));
- return (-1);
- }
-
- if (ai->ai_family == AF_INET)
- {
- struct sockaddr_in *addr = (struct sockaddr_in *) ai->ai_addr;
- if (IN_MULTICAST (ntohl (addr->sin_addr.s_addr)))
- {
-#if HAVE_STRUCT_IP_MREQN_IMR_IFINDEX
- struct ip_mreqn mreq;
-#else
- struct ip_mreq mreq;
-#endif
-
- DEBUG ("fd = %i; IPv4 multicast address found", fd);
-
- mreq.imr_multiaddr.s_addr = addr->sin_addr.s_addr;
-#if HAVE_STRUCT_IP_MREQN_IMR_IFINDEX
- /* Set the interface using the interface index if
- * possible (available). Unfortunately, the struct
- * ip_mreqn is not portable. */
- mreq.imr_address.s_addr = ntohl (INADDR_ANY);
- mreq.imr_ifindex = interface_idx;
-#else
- mreq.imr_interface.s_addr = ntohl (INADDR_ANY);
-#endif
-
- if (setsockopt (fd, IPPROTO_IP, IP_MULTICAST_LOOP,
- &loop, sizeof (loop)) == -1)
- {
- char errbuf[1024];
- ERROR ("network plugin: setsockopt (multicast-loop): %s",
- sstrerror (errno, errbuf,
- sizeof (errbuf)));
- return (-1);
- }
-
- if (setsockopt (fd, IPPROTO_IP, IP_ADD_MEMBERSHIP,
- &mreq, sizeof (mreq)) == -1)
- {
- char errbuf[1024];
- ERROR ("network plugin: setsockopt (add-membership): %s",
- sstrerror (errno, errbuf,
- sizeof (errbuf)));
- return (-1);
- }
-
- return (0);
- }
- }
- else if (ai->ai_family == AF_INET6)
- {
- /* Useful example: http://gsyc.escet.urjc.es/~eva/IPv6-web/examples/mcast.html */
- struct sockaddr_in6 *addr = (struct sockaddr_in6 *) ai->ai_addr;
- if (IN6_IS_ADDR_MULTICAST (&addr->sin6_addr))
- {
- struct ipv6_mreq mreq;
-
- DEBUG ("fd = %i; IPv6 multicast address found", fd);
-
- memcpy (&mreq.ipv6mr_multiaddr,
- &addr->sin6_addr,
- sizeof (addr->sin6_addr));
-
- /* http://developer.apple.com/documentation/Darwin/Reference/ManPages/man4/ip6.4.html
- * ipv6mr_interface may be set to zeroes to
- * choose the default multicast interface or to
- * the index of a particular multicast-capable
- * interface if the host is multihomed.
- * Membership is associ-associated with a
- * single interface; programs running on
- * multihomed hosts may need to join the same
- * group on more than one interface.*/
- mreq.ipv6mr_interface = interface_idx;
-
- if (setsockopt (fd, IPPROTO_IPV6, IPV6_MULTICAST_LOOP,
- &loop, sizeof (loop)) == -1)
- {
- char errbuf[1024];
- ERROR ("network plugin: setsockopt (ipv6-multicast-loop): %s",
- sstrerror (errno, errbuf,
- sizeof (errbuf)));
- return (-1);
- }
-
- if (setsockopt (fd, IPPROTO_IPV6, IPV6_ADD_MEMBERSHIP,
- &mreq, sizeof (mreq)) == -1)
- {
- char errbuf[1024];
- ERROR ("network plugin: setsockopt (ipv6-add-membership): %s",
- sstrerror (errno, errbuf,
- sizeof (errbuf)));
- return (-1);
- }
-
- return (0);
- }
- }
-
-#if defined(HAVE_IF_INDEXTONAME) && HAVE_IF_INDEXTONAME && defined(SO_BINDTODEVICE)
- /* if a specific interface was set, bind the socket to it. But to avoid
- * possible problems with multicast routing, only do that for non-multicast
- * addresses */
- if (interface_idx != 0)
- {
- char interface_name[IFNAMSIZ];
-
- if (if_indextoname (interface_idx, interface_name) == NULL)
- return (-1);
-
- DEBUG ("fd = %i; Binding socket to interface %s", fd, interface_name);
-
- if (setsockopt (fd, SOL_SOCKET, SO_BINDTODEVICE,
- interface_name,
- sizeof(interface_name)) == -1 )
- {
- char errbuf[1024];
- ERROR ("network plugin: setsockopt (bind-if): %s",
- sstrerror (errno, errbuf, sizeof (errbuf)));
- return (-1);
- }
- }
-#endif /* HAVE_IF_INDEXTONAME && SO_BINDTODEVICE */
-
- return (0);
-} /* int network_bind_socket */
-
-/* Initialize a sockent structure. `type' must be either `SOCKENT_TYPE_CLIENT'
- * or `SOCKENT_TYPE_SERVER' */
-static sockent_t *sockent_create (int type) /* {{{ */
-{
- sockent_t *se;
-
- if ((type != SOCKENT_TYPE_CLIENT) && (type != SOCKENT_TYPE_SERVER))
- return (NULL);
-
- se = malloc (sizeof (*se));
- if (se == NULL)
- return (NULL);
- memset (se, 0, sizeof (*se));
-
- se->type = type;
- se->node = NULL;
- se->service = NULL;
- se->interface = 0;
- se->next = NULL;
-
- if (type == SOCKENT_TYPE_SERVER)
- {
- se->data.server.fd = NULL;
-#if HAVE_LIBGCRYPT
- se->data.server.security_level = SECURITY_LEVEL_NONE;
- se->data.server.auth_file = NULL;
- se->data.server.userdb = NULL;
- se->data.server.cypher = NULL;
-#endif
- }
- else
- {
- se->data.client.fd = -1;
- se->data.client.addr = NULL;
- se->data.client.resolve_interval = 0;
- se->data.client.next_resolve_reconnect = 0;
-#if HAVE_LIBGCRYPT
- se->data.client.security_level = SECURITY_LEVEL_NONE;
- se->data.client.username = NULL;
- se->data.client.password = NULL;
- se->data.client.cypher = NULL;
-#endif
- }
-
- return (se);
-} /* }}} sockent_t *sockent_create */
-
-static int sockent_init_crypto (sockent_t *se) /* {{{ */
-{
-#if HAVE_LIBGCRYPT /* {{{ */
- if (se->type == SOCKENT_TYPE_CLIENT)
- {
- if (se->data.client.security_level > SECURITY_LEVEL_NONE)
- {
- network_init_gcrypt ();
-
- if ((se->data.client.username == NULL)
- || (se->data.client.password == NULL))
- {
- ERROR ("network plugin: Client socket with "
- "security requested, but no "
- "credentials are configured.");
- return (-1);
- }
- gcry_md_hash_buffer (GCRY_MD_SHA256,
- se->data.client.password_hash,
- se->data.client.password,
- strlen (se->data.client.password));
- }
- }
- else /* (se->type == SOCKENT_TYPE_SERVER) */
- {
- if (se->data.server.security_level > SECURITY_LEVEL_NONE)
- {
- network_init_gcrypt ();
-
- if (se->data.server.auth_file == NULL)
- {
- ERROR ("network plugin: Server socket with "
- "security requested, but no "
- "password file is configured.");
- return (-1);
- }
- }
- if (se->data.server.auth_file != NULL)
- {
- se->data.server.userdb = fbh_create (se->data.server.auth_file);
- if (se->data.server.userdb == NULL)
- {
- ERROR ("network plugin: Reading password file "
- "`%s' failed.",
- se->data.server.auth_file);
- if (se->data.server.security_level > SECURITY_LEVEL_NONE)
- return (-1);
- }
- }
- }
-#endif /* }}} HAVE_LIBGCRYPT */
-
- return (0);
-} /* }}} int sockent_init_crypto */
-
-static int sockent_client_disconnect (sockent_t *se) /* {{{ */
-{
- struct sockent_client *client;
-
- if ((se == NULL) || (se->type != SOCKENT_TYPE_CLIENT))
- return (EINVAL);
-
- client = &se->data.client;
- if (client->fd >= 0) /* connected */
- {
- close (client->fd);
- client->fd = -1;
- }
-
- sfree (client->addr);
- client->addrlen = 0;
-
- return (0);
-} /* }}} int sockent_client_disconnect */
-
-static int sockent_client_connect (sockent_t *se) /* {{{ */
-{
- static c_complain_t complaint = C_COMPLAIN_INIT_STATIC;
-
- struct sockent_client *client;
- struct addrinfo ai_hints;
- struct addrinfo *ai_list = NULL, *ai_ptr;
- int status;
- _Bool reconnect = 0;
- cdtime_t now;
-
- if ((se == NULL) || (se->type != SOCKENT_TYPE_CLIENT))
- return (EINVAL);
-
- client = &se->data.client;
-
- now = cdtime ();
- if (client->resolve_interval != 0 && client->next_resolve_reconnect < now) {
- DEBUG("network plugin: Reconnecting socket, resolve_interval = %lf, next_resolve_reconnect = %lf",
- CDTIME_T_TO_DOUBLE(client->resolve_interval), CDTIME_T_TO_DOUBLE(client->next_resolve_reconnect));
- reconnect = 1;
- }
-
- if (client->fd >= 0 && !reconnect) /* already connected and not stale*/
- return (0);
-
- memset (&ai_hints, 0, sizeof (ai_hints));
-#ifdef AI_ADDRCONFIG
- ai_hints.ai_flags |= AI_ADDRCONFIG;
-#endif
- ai_hints.ai_family = AF_UNSPEC;
- ai_hints.ai_socktype = SOCK_DGRAM;
- ai_hints.ai_protocol = IPPROTO_UDP;
-
- status = getaddrinfo (se->node,
- (se->service != NULL) ? se->service : NET_DEFAULT_PORT,
- &ai_hints, &ai_list);
- if (status != 0)
- {
- c_complain (LOG_ERR, &complaint,
- "network plugin: getaddrinfo (%s, %s) failed: %s",
- (se->node == NULL) ? "(null)" : se->node,
- (se->service == NULL) ? "(null)" : se->service,
- gai_strerror (status));
- return (-1);
- }
- else
- {
- c_release (LOG_NOTICE, &complaint,
- "network plugin: Successfully resolved \"%s\".",
- se->node);
- }
-
- for (ai_ptr = ai_list; ai_ptr != NULL; ai_ptr = ai_ptr->ai_next)
- {
- if (client->fd >= 0) /* when we reconnect */
- sockent_client_disconnect(se);
-
- client->fd = socket (ai_ptr->ai_family,
- ai_ptr->ai_socktype,
- ai_ptr->ai_protocol);
- if (client->fd < 0)
- {
- char errbuf[1024];
- ERROR ("network plugin: socket(2) failed: %s",
- sstrerror (errno, errbuf,
- sizeof (errbuf)));
- continue;
- }
-
- client->addr = malloc (sizeof (*client->addr));
- if (client->addr == NULL)
- {
- ERROR ("network plugin: malloc failed.");
- close (client->fd);
- client->fd = -1;
- continue;
- }
-
- memset (client->addr, 0, sizeof (*client->addr));
- assert (sizeof (*client->addr) >= ai_ptr->ai_addrlen);
- memcpy (client->addr, ai_ptr->ai_addr, ai_ptr->ai_addrlen);
- client->addrlen = ai_ptr->ai_addrlen;
-
- network_set_ttl (se, ai_ptr);
- network_set_interface (se, ai_ptr);
-
- /* We don't open more than one write-socket per
- * node/service pair.. */
- break;
- }
-
- freeaddrinfo (ai_list);
- if (client->fd < 0)
- return (-1);
-
- if (client->resolve_interval > 0)
- client->next_resolve_reconnect = now + client->resolve_interval;
- return (0);
-} /* }}} int sockent_client_connect */
-
-/* Open the file descriptors for a initialized sockent structure. */
-static int sockent_server_listen (sockent_t *se) /* {{{ */
-{
- struct addrinfo ai_hints;
- struct addrinfo *ai_list, *ai_ptr;
- int status;
-
- const char *node;
- const char *service;
-
- if (se == NULL)
- return (-1);
-
- node = se->node;
- service = se->service;
-
- if (service == NULL)
- service = NET_DEFAULT_PORT;
-
- DEBUG ("network plugin: sockent_server_listen: node = %s; service = %s;",
- node, service);
-
- memset (&ai_hints, 0, sizeof (ai_hints));
- ai_hints.ai_flags = 0;
-#ifdef AI_PASSIVE
- ai_hints.ai_flags |= AI_PASSIVE;
-#endif
-#ifdef AI_ADDRCONFIG
- ai_hints.ai_flags |= AI_ADDRCONFIG;
-#endif
- ai_hints.ai_family = AF_UNSPEC;
- ai_hints.ai_socktype = SOCK_DGRAM;
- ai_hints.ai_protocol = IPPROTO_UDP;
-
- status = getaddrinfo (node, service, &ai_hints, &ai_list);
- if (status != 0)
- {
- ERROR ("network plugin: getaddrinfo (%s, %s) failed: %s",
- (se->node == NULL) ? "(null)" : se->node,
- (se->service == NULL) ? "(null)" : se->service,
- gai_strerror (status));
- return (-1);
- }
-
- for (ai_ptr = ai_list; ai_ptr != NULL; ai_ptr = ai_ptr->ai_next)
- {
- int *tmp;
-
- tmp = realloc (se->data.server.fd,
- sizeof (*tmp) * (se->data.server.fd_num + 1));
- if (tmp == NULL)
- {
- ERROR ("network plugin: realloc failed.");
- continue;
- }
- se->data.server.fd = tmp;
- tmp = se->data.server.fd + se->data.server.fd_num;
-
- *tmp = socket (ai_ptr->ai_family, ai_ptr->ai_socktype,
- ai_ptr->ai_protocol);
- if (*tmp < 0)
- {
- char errbuf[1024];
- ERROR ("network plugin: socket(2) failed: %s",
- sstrerror (errno, errbuf,
- sizeof (errbuf)));
- continue;
- }
-
- status = network_bind_socket (*tmp, ai_ptr, se->interface);
- if (status != 0)
- {
- close (*tmp);
- *tmp = -1;
- continue;
- }
-
- se->data.server.fd_num++;
- continue;
- } /* for (ai_list) */
-
- freeaddrinfo (ai_list);
-
- if (se->data.server.fd_num <= 0)
- return (-1);
- return (0);
-} /* }}} int sockent_server_listen */
-
-/* Add a sockent to the global list of sockets */
-static int sockent_add (sockent_t *se) /* {{{ */
-{
- sockent_t *last_ptr;
-
- if (se == NULL)
- return (-1);
-
- if (se->type == SOCKENT_TYPE_SERVER)
- {
- struct pollfd *tmp;
- size_t i;
-
- tmp = realloc (listen_sockets_pollfd,
- sizeof (*tmp) * (listen_sockets_num
- + se->data.server.fd_num));
- if (tmp == NULL)
- {
- ERROR ("network plugin: realloc failed.");
- return (-1);
- }
- listen_sockets_pollfd = tmp;
- tmp = listen_sockets_pollfd + listen_sockets_num;
-
- for (i = 0; i < se->data.server.fd_num; i++)
- {
- memset (tmp + i, 0, sizeof (*tmp));
- tmp[i].fd = se->data.server.fd[i];
- tmp[i].events = POLLIN | POLLPRI;
- tmp[i].revents = 0;
- }
-
- listen_sockets_num += se->data.server.fd_num;
-
- if (listen_sockets == NULL)
- {
- listen_sockets = se;
- return (0);
- }
- last_ptr = listen_sockets;
- }
- else /* if (se->type == SOCKENT_TYPE_CLIENT) */
- {
- if (sending_sockets == NULL)
- {
- sending_sockets = se;
- return (0);
- }
- last_ptr = sending_sockets;
- }
-
- while (last_ptr->next != NULL)
- last_ptr = last_ptr->next;
- last_ptr->next = se;
-
- return (0);
-} /* }}} int sockent_add */
-
-static void *dispatch_thread (void __attribute__((unused)) *arg) /* {{{ */
-{
- while (42)
- {
- receive_list_entry_t *ent;
- sockent_t *se;
-
- /* Lock and wait for more data to come in */
- pthread_mutex_lock (&receive_list_lock);
- while ((listen_loop == 0)
- && (receive_list_head == NULL))
- pthread_cond_wait (&receive_list_cond, &receive_list_lock);
-
- /* Remove the head entry and unlock */
- ent = receive_list_head;
- if (ent != NULL)
- receive_list_head = ent->next;
- receive_list_length--;
- pthread_mutex_unlock (&receive_list_lock);
-
- /* Check whether we are supposed to exit. We do NOT check `listen_loop'
- * because we dispatch all missing packets before shutting down. */
- if (ent == NULL)
- break;
-
- /* Look for the correct `sockent_t' */
- se = listen_sockets;
- while (se != NULL)
- {
- size_t i;
-
- for (i = 0; i < se->data.server.fd_num; i++)
- if (se->data.server.fd[i] == ent->fd)
- break;
-
- if (i < se->data.server.fd_num)
- break;
-
- se = se->next;
- }
-
- if (se == NULL)
- {
- ERROR ("network plugin: Got packet from FD %i, but can't "
- "find an appropriate socket entry.",
- ent->fd);
- sfree (ent->data);
- sfree (ent);
- continue;
- }
-
- parse_packet (se, ent->data, ent->data_len, /* flags = */ 0,
- /* username = */ NULL);
- sfree (ent->data);
- sfree (ent);
- } /* while (42) */
-
- return (NULL);
-} /* }}} void *dispatch_thread */
-
-static int network_receive (void) /* {{{ */
-{
- char buffer[network_config_packet_size];
- int buffer_len;
-
- int i;
- int status;
-
- receive_list_entry_t *private_list_head;
- receive_list_entry_t *private_list_tail;
- uint64_t private_list_length;
-
- assert (listen_sockets_num > 0);
-
- private_list_head = NULL;
- private_list_tail = NULL;
- private_list_length = 0;
-
- while (listen_loop == 0)
- {
- status = poll (listen_sockets_pollfd, listen_sockets_num, -1);
-
- if (status <= 0)
- {
- char errbuf[1024];
- if (errno == EINTR)
- continue;
- ERROR ("poll failed: %s",
- sstrerror (errno, errbuf, sizeof (errbuf)));
- return (-1);
- }
-
- for (i = 0; (i < listen_sockets_num) && (status > 0); i++)
- {
- receive_list_entry_t *ent;
-
- if ((listen_sockets_pollfd[i].revents
- & (POLLIN | POLLPRI)) == 0)
- continue;
- status--;
-
- buffer_len = recv (listen_sockets_pollfd[i].fd,
- buffer, sizeof (buffer),
- 0 /* no flags */);
- if (buffer_len < 0)
- {
- char errbuf[1024];
- ERROR ("recv failed: %s",
- sstrerror (errno, errbuf,
- sizeof (errbuf)));
- return (-1);
- }
-
- stats_octets_rx += ((uint64_t) buffer_len);
- stats_packets_rx++;
-
- /* TODO: Possible performance enhancement: Do not free
- * these entries in the dispatch thread but put them in
- * another list, so we don't have to allocate more and
- * more of these structures. */
- ent = malloc (sizeof (receive_list_entry_t));
- if (ent == NULL)
- {
- ERROR ("network plugin: malloc failed.");
- return (-1);
- }
- memset (ent, 0, sizeof (receive_list_entry_t));
- ent->data = malloc (network_config_packet_size);
- if (ent->data == NULL)
- {
- sfree (ent);
- ERROR ("network plugin: malloc failed.");
- return (-1);
- }
- ent->fd = listen_sockets_pollfd[i].fd;
- ent->next = NULL;
-
- memcpy (ent->data, buffer, buffer_len);
- ent->data_len = buffer_len;
-
- if (private_list_head == NULL)
- private_list_head = ent;
- else
- private_list_tail->next = ent;
- private_list_tail = ent;
- private_list_length++;
-
- /* Do not block here. Blocking here has led to
- * insufficient performance in the past. */
- if (pthread_mutex_trylock (&receive_list_lock) == 0)
- {
- assert (((receive_list_head == NULL) && (receive_list_length == 0))
- || ((receive_list_head != NULL) && (receive_list_length != 0)));
-
- if (receive_list_head == NULL)
- receive_list_head = private_list_head;
- else
- receive_list_tail->next = private_list_head;
- receive_list_tail = private_list_tail;
- receive_list_length += private_list_length;
-
- pthread_cond_signal (&receive_list_cond);
- pthread_mutex_unlock (&receive_list_lock);
-
- private_list_head = NULL;
- private_list_tail = NULL;
- private_list_length = 0;
- }
- } /* for (listen_sockets_pollfd) */
- } /* while (listen_loop == 0) */
-
- /* Make sure everything is dispatched before exiting. */
- if (private_list_head != NULL)
- {
- pthread_mutex_lock (&receive_list_lock);
-
- if (receive_list_head == NULL)
- receive_list_head = private_list_head;
- else
- receive_list_tail->next = private_list_head;
- receive_list_tail = private_list_tail;
- receive_list_length += private_list_length;
-
- private_list_head = NULL;
- private_list_tail = NULL;
- private_list_length = 0;
-
- pthread_cond_signal (&receive_list_cond);
- pthread_mutex_unlock (&receive_list_lock);
- }
-
- return (0);
-} /* }}} int network_receive */
-
-static void *receive_thread (void __attribute__((unused)) *arg)
-{
- return (network_receive () ? (void *) 1 : (void *) 0);
-} /* void *receive_thread */
-
-static void network_init_buffer (void)
-{
- memset (send_buffer, 0, network_config_packet_size);
- send_buffer_ptr = send_buffer;
- send_buffer_fill = 0;
-
- memset (&send_buffer_vl, 0, sizeof (send_buffer_vl));
-} /* int network_init_buffer */
-
-static void networt_send_buffer_plain (sockent_t *se, /* {{{ */
- const char *buffer, size_t buffer_size)
-{
- int status;
-
- while (42)
- {
- status = sockent_client_connect (se);
- if (status != 0)
- return;
-
- status = sendto (se->data.client.fd, buffer, buffer_size,
- /* flags = */ 0,
- (struct sockaddr *) se->data.client.addr,
- se->data.client.addrlen);
- if (status < 0)
- {
- char errbuf[1024];
-
- if ((errno == EINTR) || (errno == EAGAIN))
- continue;
-
- ERROR ("network plugin: sendto failed: %s. Closing sending socket.",
- sstrerror (errno, errbuf, sizeof (errbuf)));
- sockent_client_disconnect (se);
- return;
- }
-
- break;
- } /* while (42) */
-} /* }}} void networt_send_buffer_plain */
-
-#if HAVE_LIBGCRYPT
-#define BUFFER_ADD(p,s) do { \
- memcpy (buffer + buffer_offset, (p), (s)); \
- buffer_offset += (s); \
-} while (0)
-
-static void networt_send_buffer_signed (sockent_t *se, /* {{{ */
- const char *in_buffer, size_t in_buffer_size)
-{
- part_signature_sha256_t ps;
- char buffer[BUFF_SIG_SIZE + in_buffer_size];
- size_t buffer_offset;
- size_t username_len;
-
- gcry_md_hd_t hd;
- gcry_error_t err;
- unsigned char *hash;
-
- hd = NULL;
- err = gcry_md_open (&hd, GCRY_MD_SHA256, GCRY_MD_FLAG_HMAC);
- if (err != 0)
- {
- ERROR ("network plugin: Creating HMAC object failed: %s",
- gcry_strerror (err));
- return;
- }
-
- err = gcry_md_setkey (hd, se->data.client.password,
- strlen (se->data.client.password));
- if (err != 0)
- {
- ERROR ("network plugin: gcry_md_setkey failed: %s",
- gcry_strerror (err));
- gcry_md_close (hd);
- return;
- }
-
- username_len = strlen (se->data.client.username);
- if (username_len > (BUFF_SIG_SIZE - PART_SIGNATURE_SHA256_SIZE))
- {
- ERROR ("network plugin: Username too long: %s",
- se->data.client.username);
- return;
- }
-
- memcpy (buffer + PART_SIGNATURE_SHA256_SIZE,
- se->data.client.username, username_len);
- memcpy (buffer + PART_SIGNATURE_SHA256_SIZE + username_len,
- in_buffer, in_buffer_size);
-
- /* Initialize the `ps' structure. */
- memset (&ps, 0, sizeof (ps));
- ps.head.type = htons (TYPE_SIGN_SHA256);
- ps.head.length = htons (PART_SIGNATURE_SHA256_SIZE + username_len);
-
- /* Calculate the hash value. */
- gcry_md_write (hd, buffer + PART_SIGNATURE_SHA256_SIZE,
- username_len + in_buffer_size);
- hash = gcry_md_read (hd, GCRY_MD_SHA256);
- if (hash == NULL)
- {
- ERROR ("network plugin: gcry_md_read failed.");
- gcry_md_close (hd);
- return;
- }
- memcpy (ps.hash, hash, sizeof (ps.hash));
-
- /* Add the header */
- buffer_offset = 0;
-
- BUFFER_ADD (&ps.head.type, sizeof (ps.head.type));
- BUFFER_ADD (&ps.head.length, sizeof (ps.head.length));
- BUFFER_ADD (ps.hash, sizeof (ps.hash));
-
- assert (buffer_offset == PART_SIGNATURE_SHA256_SIZE);
-
- gcry_md_close (hd);
- hd = NULL;
-
- buffer_offset = PART_SIGNATURE_SHA256_SIZE + username_len + in_buffer_size;
- networt_send_buffer_plain (se, buffer, buffer_offset);
-} /* }}} void networt_send_buffer_signed */
-
-static void networt_send_buffer_encrypted (sockent_t *se, /* {{{ */
- const char *in_buffer, size_t in_buffer_size)
-{
- part_encryption_aes256_t pea;
- char buffer[BUFF_SIG_SIZE + in_buffer_size];
- size_t buffer_size;
- size_t buffer_offset;
- size_t header_size;
- size_t username_len;
- gcry_error_t err;
- gcry_cipher_hd_t cypher;
-
- /* Initialize the header fields */
- memset (&pea, 0, sizeof (pea));
- pea.head.type = htons (TYPE_ENCR_AES256);
-
- pea.username = se->data.client.username;
-
- username_len = strlen (pea.username);
- if ((PART_ENCRYPTION_AES256_SIZE + username_len) > BUFF_SIG_SIZE)
- {
- ERROR ("network plugin: Username too long: %s", pea.username);
- return;
- }
-
- buffer_size = PART_ENCRYPTION_AES256_SIZE + username_len + in_buffer_size;
- header_size = PART_ENCRYPTION_AES256_SIZE + username_len
- - sizeof (pea.hash);
-
- assert (buffer_size <= sizeof (buffer));
- DEBUG ("network plugin: networt_send_buffer_encrypted: "
- "buffer_size = %zu;", buffer_size);
-
- pea.head.length = htons ((uint16_t) (PART_ENCRYPTION_AES256_SIZE
- + username_len + in_buffer_size));
- pea.username_length = htons ((uint16_t) username_len);
-
- /* Chose a random initialization vector. */
- gcry_randomize ((void *) &pea.iv, sizeof (pea.iv), GCRY_STRONG_RANDOM);
-
- /* Create hash of the payload */
- gcry_md_hash_buffer (GCRY_MD_SHA1, pea.hash, in_buffer, in_buffer_size);
-
- /* Initialize the buffer */
- buffer_offset = 0;
- memset (buffer, 0, sizeof (buffer));
-
-
- BUFFER_ADD (&pea.head.type, sizeof (pea.head.type));
- BUFFER_ADD (&pea.head.length, sizeof (pea.head.length));
- BUFFER_ADD (&pea.username_length, sizeof (pea.username_length));
- BUFFER_ADD (pea.username, username_len);
- BUFFER_ADD (pea.iv, sizeof (pea.iv));
- assert (buffer_offset == header_size);
- BUFFER_ADD (pea.hash, sizeof (pea.hash));
- BUFFER_ADD (in_buffer, in_buffer_size);
-
- assert (buffer_offset == buffer_size);
-
- cypher = network_get_aes256_cypher (se, pea.iv, sizeof (pea.iv),
- se->data.client.password);
- if (cypher == NULL)
- return;
-
- /* Encrypt the buffer in-place */
- err = gcry_cipher_encrypt (cypher,
- buffer + header_size,
- buffer_size - header_size,
- /* in = */ NULL, /* in len = */ 0);
- if (err != 0)
- {
- ERROR ("network plugin: gcry_cipher_encrypt returned: %s",
- gcry_strerror (err));
- return;
- }
-
- /* Send it out without further modifications */
- networt_send_buffer_plain (se, buffer, buffer_size);
-} /* }}} void networt_send_buffer_encrypted */
-#undef BUFFER_ADD
-#endif /* HAVE_LIBGCRYPT */
-
-static void network_send_buffer (char *buffer, size_t buffer_len) /* {{{ */
-{
- sockent_t *se;
-
- DEBUG ("network plugin: network_send_buffer: buffer_len = %zu", buffer_len);
-
- for (se = sending_sockets; se != NULL; se = se->next)
- {
-#if HAVE_LIBGCRYPT
- if (se->data.client.security_level == SECURITY_LEVEL_ENCRYPT)
- networt_send_buffer_encrypted (se, buffer, buffer_len);
- else if (se->data.client.security_level == SECURITY_LEVEL_SIGN)
- networt_send_buffer_signed (se, buffer, buffer_len);
- else /* if (se->data.client.security_level == SECURITY_LEVEL_NONE) */
-#endif /* HAVE_LIBGCRYPT */
- networt_send_buffer_plain (se, buffer, buffer_len);
- } /* for (sending_sockets) */
-} /* }}} void network_send_buffer */
-
-static int add_to_buffer (char *buffer, int buffer_size, /* {{{ */
- value_list_t *vl_def,
- const data_set_t *ds, const value_list_t *vl)
-{
- char *buffer_orig = buffer;
-
- if (strcmp (vl_def->host, vl->host) != 0)
- {
- if (write_part_string (&buffer, &buffer_size, TYPE_HOST,
- vl->host, strlen (vl->host)) != 0)
- return (-1);
- sstrncpy (vl_def->host, vl->host, sizeof (vl_def->host));
- }
-
- if (vl_def->time != vl->time)
- {
- if (write_part_number (&buffer, &buffer_size, TYPE_TIME_HR,
- (uint64_t) vl->time))
- return (-1);
- vl_def->time = vl->time;
- }
-
- if (vl_def->interval != vl->interval)
- {
- if (write_part_number (&buffer, &buffer_size, TYPE_INTERVAL_HR,
- (uint64_t) vl->interval))
- return (-1);
- vl_def->interval = vl->interval;
- }
-
- if (strcmp (vl_def->plugin, vl->plugin) != 0)
- {
- if (write_part_string (&buffer, &buffer_size, TYPE_PLUGIN,
- vl->plugin, strlen (vl->plugin)) != 0)
- return (-1);
- sstrncpy (vl_def->plugin, vl->plugin, sizeof (vl_def->plugin));
- }
-
- if (strcmp (vl_def->plugin_instance, vl->plugin_instance) != 0)
- {
- if (write_part_string (&buffer, &buffer_size, TYPE_PLUGIN_INSTANCE,
- vl->plugin_instance,
- strlen (vl->plugin_instance)) != 0)
- return (-1);
- sstrncpy (vl_def->plugin_instance, vl->plugin_instance, sizeof (vl_def->plugin_instance));
- }
-
- if (strcmp (vl_def->type, vl->type) != 0)
- {
- if (write_part_string (&buffer, &buffer_size, TYPE_TYPE,
- vl->type, strlen (vl->type)) != 0)
- return (-1);
- sstrncpy (vl_def->type, ds->type, sizeof (vl_def->type));
- }
-
- if (strcmp (vl_def->type_instance, vl->type_instance) != 0)
- {
- if (write_part_string (&buffer, &buffer_size, TYPE_TYPE_INSTANCE,
- vl->type_instance,
- strlen (vl->type_instance)) != 0)
- return (-1);
- sstrncpy (vl_def->type_instance, vl->type_instance, sizeof (vl_def->type_instance));
- }
-
- if (write_part_values (&buffer, &buffer_size, ds, vl) != 0)
- return (-1);
-
- return (buffer - buffer_orig);
-} /* }}} int add_to_buffer */
-
-static void flush_buffer (void)
-{
- DEBUG ("network plugin: flush_buffer: send_buffer_fill = %i",
- send_buffer_fill);
-
- network_send_buffer (send_buffer, (size_t) send_buffer_fill);
-
- stats_octets_tx += ((uint64_t) send_buffer_fill);
- stats_packets_tx++;
-
- network_init_buffer ();
-}
-
-static int network_write (const data_set_t *ds, const value_list_t *vl,
- user_data_t __attribute__((unused)) *user_data)
-{
- int status;
-
- if (!check_send_okay (vl))
- {
-#if COLLECT_DEBUG
- char name[6*DATA_MAX_NAME_LEN];
- FORMAT_VL (name, sizeof (name), vl);
- name[sizeof (name) - 1] = 0;
- DEBUG ("network plugin: network_write: "
- "NOT sending %s.", name);
-#endif
- /* Counter is not protected by another lock and may be reached by
- * multiple threads */
- pthread_mutex_lock (&stats_lock);
- stats_values_not_sent++;
- pthread_mutex_unlock (&stats_lock);
- return (0);
- }
-
- uc_meta_data_add_unsigned_int (vl,
- "network:time_sent", (uint64_t) vl->time);
-
- pthread_mutex_lock (&send_buffer_lock);
-
- status = add_to_buffer (send_buffer_ptr,
- network_config_packet_size - (send_buffer_fill + BUFF_SIG_SIZE),
- &send_buffer_vl,
- ds, vl);
- if (status >= 0)
- {
- /* status == bytes added to the buffer */
- send_buffer_fill += status;
- send_buffer_ptr += status;
-
- stats_values_sent++;
- }
- else
- {
- flush_buffer ();
-
- status = add_to_buffer (send_buffer_ptr,
- network_config_packet_size - (send_buffer_fill + BUFF_SIG_SIZE),
- &send_buffer_vl,
- ds, vl);
-
- if (status >= 0)
- {
- send_buffer_fill += status;
- send_buffer_ptr += status;
-
- stats_values_sent++;
- }
- }
-
- if (status < 0)
- {
- ERROR ("network plugin: Unable to append to the "
- "buffer for some weird reason");
- }
- else if ((network_config_packet_size - send_buffer_fill) < 15)
- {
- flush_buffer ();
- }
-
- pthread_mutex_unlock (&send_buffer_lock);
-
- return ((status < 0) ? -1 : 0);
-} /* int network_write */
-
-static int network_config_set_boolean (const oconfig_item_t *ci, /* {{{ */
- int *retval)
-{
- if ((ci->values_num != 1)
- || ((ci->values[0].type != OCONFIG_TYPE_BOOLEAN)
- && (ci->values[0].type != OCONFIG_TYPE_STRING)))
- {
- ERROR ("network plugin: The `%s' config option needs "
- "exactly one boolean argument.", ci->key);
- return (-1);
- }
-
- if (ci->values[0].type == OCONFIG_TYPE_BOOLEAN)
- {
- if (ci->values[0].value.boolean)
- *retval = 1;
- else
- *retval = 0;
- }
- else
- {
- char *str = ci->values[0].value.string;
-
- if (IS_TRUE (str))
- *retval = 1;
- else if (IS_FALSE (str))
- *retval = 0;
- else
- {
- ERROR ("network plugin: Cannot parse string value `%s' of the `%s' "
- "option as boolean value.",
- str, ci->key);
- return (-1);
- }
- }
-
- return (0);
-} /* }}} int network_config_set_boolean */
-
-static int network_config_set_ttl (const oconfig_item_t *ci) /* {{{ */
-{
- int tmp;
- if ((ci->values_num != 1)
- || (ci->values[0].type != OCONFIG_TYPE_NUMBER))
- {
- WARNING ("network plugin: The `TimeToLive' config option needs exactly "
- "one numeric argument.");
- return (-1);
- }
-
- tmp = (int) ci->values[0].value.number;
- if ((tmp > 0) && (tmp <= 255))
- network_config_ttl = tmp;
- else {
- WARNING ("network plugin: The `TimeToLive' must be between 1 and 255.");
- return (-1);
- }
-
- return (0);
-} /* }}} int network_config_set_ttl */
-
-static int network_config_set_interface (const oconfig_item_t *ci, /* {{{ */
- int *interface)
-{
- if ((ci->values_num != 1)
- || (ci->values[0].type != OCONFIG_TYPE_STRING))
- {
- WARNING ("network plugin: The `Interface' config option needs exactly "
- "one string argument.");
- return (-1);
- }
-
- if (interface == NULL)
- return (-1);
-
- *interface = if_nametoindex (ci->values[0].value.string);
-
- return (0);
-} /* }}} int network_config_set_interface */
-
-static int network_config_set_buffer_size (const oconfig_item_t *ci) /* {{{ */
-{
- int tmp;
- if ((ci->values_num != 1)
- || (ci->values[0].type != OCONFIG_TYPE_NUMBER))
- {
- WARNING ("network plugin: The `MaxPacketSize' config option needs exactly "
- "one numeric argument.");
- return (-1);
- }
-
- tmp = (int) ci->values[0].value.number;
- if ((tmp >= 1024) && (tmp <= 65535))
- network_config_packet_size = tmp;
-
- return (0);
-} /* }}} int network_config_set_buffer_size */
-
-#if HAVE_LIBGCRYPT
-static int network_config_set_string (const oconfig_item_t *ci, /* {{{ */
- char **ret_string)
-{
- char *tmp;
- if ((ci->values_num != 1)
- || (ci->values[0].type != OCONFIG_TYPE_STRING))
- {
- WARNING ("network plugin: The `%s' config option needs exactly "
- "one string argument.", ci->key);
- return (-1);
- }
-
- tmp = strdup (ci->values[0].value.string);
- if (tmp == NULL)
- return (-1);
-
- sfree (*ret_string);
- *ret_string = tmp;
-
- return (0);
-} /* }}} int network_config_set_string */
-#endif /* HAVE_LIBGCRYPT */
-
-#if HAVE_LIBGCRYPT
-static int network_config_set_security_level (oconfig_item_t *ci, /* {{{ */
- int *retval)
-{
- char *str;
- if ((ci->values_num != 1)
- || (ci->values[0].type != OCONFIG_TYPE_STRING))
- {
- WARNING ("network plugin: The `SecurityLevel' config option needs exactly "
- "one string argument.");
- return (-1);
- }
-
- str = ci->values[0].value.string;
- if (strcasecmp ("Encrypt", str) == 0)
- *retval = SECURITY_LEVEL_ENCRYPT;
- else if (strcasecmp ("Sign", str) == 0)
- *retval = SECURITY_LEVEL_SIGN;
- else if (strcasecmp ("None", str) == 0)
- *retval = SECURITY_LEVEL_NONE;
- else
- {
- WARNING ("network plugin: Unknown security level: %s.", str);
- return (-1);
- }
-
- return (0);
-} /* }}} int network_config_set_security_level */
-#endif /* HAVE_LIBGCRYPT */
-
-static int network_config_add_listen (const oconfig_item_t *ci) /* {{{ */
-{
- sockent_t *se;
- int status;
- int i;
-
- if ((ci->values_num < 1) || (ci->values_num > 2)
- || (ci->values[0].type != OCONFIG_TYPE_STRING)
- || ((ci->values_num > 1) && (ci->values[1].type != OCONFIG_TYPE_STRING)))
- {
- ERROR ("network plugin: The `%s' config option needs "
- "one or two string arguments.", ci->key);
- return (-1);
- }
-
- se = sockent_create (SOCKENT_TYPE_SERVER);
- if (se == NULL)
- {
- ERROR ("network plugin: sockent_create failed.");
- return (-1);
- }
-
- se->node = strdup (ci->values[0].value.string);
- if (ci->values_num >= 2)
- se->service = strdup (ci->values[1].value.string);
-
- for (i = 0; i < ci->children_num; i++)
- {
- oconfig_item_t *child = ci->children + i;
-
-#if HAVE_LIBGCRYPT
- if (strcasecmp ("AuthFile", child->key) == 0)
- network_config_set_string (child, &se->data.server.auth_file);
- else if (strcasecmp ("SecurityLevel", child->key) == 0)
- network_config_set_security_level (child,
- &se->data.server.security_level);
- else
-#endif /* HAVE_LIBGCRYPT */
- if (strcasecmp ("Interface", child->key) == 0)
- network_config_set_interface (child,
- &se->interface);
- else
- {
- WARNING ("network plugin: Option `%s' is not allowed here.",
- child->key);
- }
- }
-
-#if HAVE_LIBGCRYPT
- if ((se->data.server.security_level > SECURITY_LEVEL_NONE)
- && (se->data.server.auth_file == NULL))
- {
- ERROR ("network plugin: A security level higher than `none' was "
- "requested, but no AuthFile option was given. Cowardly refusing to "
- "open this socket!");
- sockent_destroy (se);
- return (-1);
- }
-#endif /* HAVE_LIBGCRYPT */
-
- status = sockent_init_crypto (se);
- if (status != 0)
- {
- ERROR ("network plugin: network_config_add_listen: sockent_init_crypto() failed.");
- sockent_destroy (se);
- return (-1);
- }
-
- status = sockent_server_listen (se);
- if (status != 0)
- {
- ERROR ("network plugin: network_config_add_server: sockent_server_listen failed.");
- sockent_destroy (se);
- return (-1);
- }
-
- status = sockent_add (se);
- if (status != 0)
- {
- ERROR ("network plugin: network_config_add_listen: sockent_add failed.");
- sockent_destroy (se);
- return (-1);
- }
-
- return (0);
-} /* }}} int network_config_add_listen */
-
-static int network_config_add_server (const oconfig_item_t *ci) /* {{{ */
-{
- sockent_t *se;
- int status;
- int i;
-
- if ((ci->values_num < 1) || (ci->values_num > 2)
- || (ci->values[0].type != OCONFIG_TYPE_STRING)
- || ((ci->values_num > 1) && (ci->values[1].type != OCONFIG_TYPE_STRING)))
- {
- ERROR ("network plugin: The `%s' config option needs "
- "one or two string arguments.", ci->key);
- return (-1);
- }
-
- se = sockent_create (SOCKENT_TYPE_CLIENT);
- if (se == NULL)
- {
- ERROR ("network plugin: sockent_create failed.");
- return (-1);
- }
-
- se->node = strdup (ci->values[0].value.string);
- if (ci->values_num >= 2)
- se->service = strdup (ci->values[1].value.string);
-
- for (i = 0; i < ci->children_num; i++)
- {
- oconfig_item_t *child = ci->children + i;
-
-#if HAVE_LIBGCRYPT
- if (strcasecmp ("Username", child->key) == 0)
- network_config_set_string (child, &se->data.client.username);
- else if (strcasecmp ("Password", child->key) == 0)
- network_config_set_string (child, &se->data.client.password);
- else if (strcasecmp ("SecurityLevel", child->key) == 0)
- network_config_set_security_level (child,
- &se->data.client.security_level);
- else
-#endif /* HAVE_LIBGCRYPT */
- if (strcasecmp ("Interface", child->key) == 0)
- network_config_set_interface (child,
- &se->interface);
- else if (strcasecmp ("ResolveInterval", child->key) == 0)
- cf_util_get_cdtime(child, &se->data.client.resolve_interval);
- else
- {
- WARNING ("network plugin: Option `%s' is not allowed here.",
- child->key);
- }
- }
-
-#if HAVE_LIBGCRYPT
- if ((se->data.client.security_level > SECURITY_LEVEL_NONE)
- && ((se->data.client.username == NULL)
- || (se->data.client.password == NULL)))
- {
- ERROR ("network plugin: A security level higher than `none' was "
- "requested, but no Username or Password option was given. "
- "Cowardly refusing to open this socket!");
- sockent_destroy (se);
- return (-1);
- }
-#endif /* HAVE_LIBGCRYPT */
-
- status = sockent_init_crypto (se);
- if (status != 0)
- {
- ERROR ("network plugin: network_config_add_server: sockent_init_crypto() failed.");
- sockent_destroy (se);
- return (-1);
- }
-
- /* No call to sockent_client_connect() here -- it is called from
- * networt_send_buffer_plain(). */
-
- status = sockent_add (se);
- if (status != 0)
- {
- ERROR ("network plugin: network_config_add_server: sockent_add failed.");
- sockent_destroy (se);
- return (-1);
- }
-
- return (0);
-} /* }}} int network_config_add_server */
-
-static int network_config (oconfig_item_t *ci) /* {{{ */
-{
- int i;
-
- /* The options need to be applied first */
- for (i = 0; i < ci->children_num; i++)
- {
- oconfig_item_t *child = ci->children + i;
- if (strcasecmp ("TimeToLive", child->key) == 0)
- network_config_set_ttl (child);
- }
-
- for (i = 0; i < ci->children_num; i++)
- {
- oconfig_item_t *child = ci->children + i;
-
- if (strcasecmp ("Listen", child->key) == 0)
- network_config_add_listen (child);
- else if (strcasecmp ("Server", child->key) == 0)
- network_config_add_server (child);
- else if (strcasecmp ("TimeToLive", child->key) == 0) {
- /* Handled earlier */
- }
- else if (strcasecmp ("MaxPacketSize", child->key) == 0)
- network_config_set_buffer_size (child);
- else if (strcasecmp ("Forward", child->key) == 0)
- network_config_set_boolean (child, &network_config_forward);
- else if (strcasecmp ("ReportStats", child->key) == 0)
- network_config_set_boolean (child, &network_config_stats);
- else
- {
- WARNING ("network plugin: Option `%s' is not allowed here.",
- child->key);
- }
- }
-
- return (0);
-} /* }}} int network_config */
-
-static int network_notification (const notification_t *n,
- user_data_t __attribute__((unused)) *user_data)
-{
- char buffer[network_config_packet_size];
- char *buffer_ptr = buffer;
- int buffer_free = sizeof (buffer);
- int status;
-
- if (!check_send_notify_okay (n))
- return (0);
-
- memset (buffer, 0, sizeof (buffer));
-
- status = write_part_number (&buffer_ptr, &buffer_free, TYPE_TIME_HR,
- (uint64_t) n->time);
- if (status != 0)
- return (-1);
-
- status = write_part_number (&buffer_ptr, &buffer_free, TYPE_SEVERITY,
- (uint64_t) n->severity);
- if (status != 0)
- return (-1);
-
- if (strlen (n->host) > 0)
- {
- status = write_part_string (&buffer_ptr, &buffer_free, TYPE_HOST,
- n->host, strlen (n->host));
- if (status != 0)
- return (-1);
- }
-
- if (strlen (n->plugin) > 0)
- {
- status = write_part_string (&buffer_ptr, &buffer_free, TYPE_PLUGIN,
- n->plugin, strlen (n->plugin));
- if (status != 0)
- return (-1);
- }
-
- if (strlen (n->plugin_instance) > 0)
- {
- status = write_part_string (&buffer_ptr, &buffer_free,
- TYPE_PLUGIN_INSTANCE,
- n->plugin_instance, strlen (n->plugin_instance));
- if (status != 0)
- return (-1);
- }
-
- if (strlen (n->type) > 0)
- {
- status = write_part_string (&buffer_ptr, &buffer_free, TYPE_TYPE,
- n->type, strlen (n->type));
- if (status != 0)
- return (-1);
- }
-
- if (strlen (n->type_instance) > 0)
- {
- status = write_part_string (&buffer_ptr, &buffer_free, TYPE_TYPE_INSTANCE,
- n->type_instance, strlen (n->type_instance));
- if (status != 0)
- return (-1);
- }
-
- status = write_part_string (&buffer_ptr, &buffer_free, TYPE_MESSAGE,
- n->message, strlen (n->message));
- if (status != 0)
- return (-1);
-
- network_send_buffer (buffer, sizeof (buffer) - buffer_free);
-
- return (0);
-} /* int network_notification */
-
-static int network_shutdown (void)
-{
- sockent_t *se;
-
- listen_loop++;
-
- /* Kill the listening thread */
- if (receive_thread_running != 0)
- {
- INFO ("network plugin: Stopping receive thread.");
- pthread_kill (receive_thread_id, SIGTERM);
- pthread_join (receive_thread_id, NULL /* no return value */);
- memset (&receive_thread_id, 0, sizeof (receive_thread_id));
- receive_thread_running = 0;
- }
-
- /* Shutdown the dispatching thread */
- if (dispatch_thread_running != 0)
- {
- INFO ("network plugin: Stopping dispatch thread.");
- pthread_mutex_lock (&receive_list_lock);
- pthread_cond_broadcast (&receive_list_cond);
- pthread_mutex_unlock (&receive_list_lock);
- pthread_join (dispatch_thread_id, /* ret = */ NULL);
- dispatch_thread_running = 0;
- }
-
- sockent_destroy (listen_sockets);
-
- if (send_buffer_fill > 0)
- flush_buffer ();
-
- sfree (send_buffer);
-
- for (se = sending_sockets; se != NULL; se = se->next)
- sockent_client_disconnect (se);
- sockent_destroy (sending_sockets);
-
- plugin_unregister_config ("network");
- plugin_unregister_init ("network");
- plugin_unregister_write ("network");
- plugin_unregister_shutdown ("network");
-
- return (0);
-} /* int network_shutdown */
-
-static int network_stats_read (void) /* {{{ */
-{
- derive_t copy_octets_rx;
- derive_t copy_octets_tx;
- derive_t copy_packets_rx;
- derive_t copy_packets_tx;
- derive_t copy_values_dispatched;
- derive_t copy_values_not_dispatched;
- derive_t copy_values_sent;
- derive_t copy_values_not_sent;
- derive_t copy_receive_list_length;
- value_list_t vl = VALUE_LIST_INIT;
- value_t values[2];
-
- copy_octets_rx = stats_octets_rx;
- copy_octets_tx = stats_octets_tx;
- copy_packets_rx = stats_packets_rx;
- copy_packets_tx = stats_packets_tx;
- copy_values_dispatched = stats_values_dispatched;
- copy_values_not_dispatched = stats_values_not_dispatched;
- copy_values_sent = stats_values_sent;
- copy_values_not_sent = stats_values_not_sent;
- copy_receive_list_length = receive_list_length;
-
- /* Initialize `vl' */
- vl.values = values;
- vl.values_len = 2;
- vl.time = 0;
- sstrncpy (vl.host, hostname_g, sizeof (vl.host));
- sstrncpy (vl.plugin, "network", sizeof (vl.plugin));
-
- /* Octets received / sent */
- vl.values[0].derive = (derive_t) copy_octets_rx;
- vl.values[1].derive = (derive_t) copy_octets_tx;
- sstrncpy (vl.type, "if_octets", sizeof (vl.type));
- plugin_dispatch_values (&vl);
-
- /* Packets received / send */
- vl.values[0].derive = (derive_t) copy_packets_rx;
- vl.values[1].derive = (derive_t) copy_packets_tx;
- sstrncpy (vl.type, "if_packets", sizeof (vl.type));
- plugin_dispatch_values (&vl);
-
- /* Values (not) dispatched and (not) send */
- sstrncpy (vl.type, "total_values", sizeof (vl.type));
- vl.values_len = 1;
-
- vl.values[0].derive = (derive_t) copy_values_dispatched;
- sstrncpy (vl.type_instance, "dispatch-accepted",
- sizeof (vl.type_instance));
- plugin_dispatch_values (&vl);
-
- vl.values[0].derive = (derive_t) copy_values_not_dispatched;
- sstrncpy (vl.type_instance, "dispatch-rejected",
- sizeof (vl.type_instance));
- plugin_dispatch_values (&vl);
-
- vl.values[0].derive = (derive_t) copy_values_sent;
- sstrncpy (vl.type_instance, "send-accepted",
- sizeof (vl.type_instance));
- plugin_dispatch_values (&vl);
-
- vl.values[0].derive = (derive_t) copy_values_not_sent;
- sstrncpy (vl.type_instance, "send-rejected",
- sizeof (vl.type_instance));
- plugin_dispatch_values (&vl);
-
- /* Receive queue length */
- vl.values[0].gauge = (gauge_t) copy_receive_list_length;
- sstrncpy (vl.type, "queue_length", sizeof (vl.type));
- vl.type_instance[0] = 0;
- plugin_dispatch_values (&vl);
-
- return (0);
-} /* }}} int network_stats_read */
-
-static int network_init (void)
-{
- static _Bool have_init = 0;
-
- /* Check if we were already initialized. If so, just return - there's
- * nothing more to do (for now, that is). */
- if (have_init)
- return (0);
- have_init = 1;
-
-#if HAVE_LIBGCRYPT
- network_init_gcrypt ();
-#endif
-
- if (network_config_stats != 0)
- plugin_register_read ("network", network_stats_read);
-
- plugin_register_shutdown ("network", network_shutdown);
-
- send_buffer = malloc (network_config_packet_size);
- if (send_buffer == NULL)
- {
- ERROR ("network plugin: malloc failed.");
- return (-1);
- }
- network_init_buffer ();
-
- /* setup socket(s) and so on */
- if (sending_sockets != NULL)
- {
- plugin_register_write ("network", network_write,
- /* user_data = */ NULL);
- plugin_register_notification ("network", network_notification,
- /* user_data = */ NULL);
- }
-
- /* If no threads need to be started, return here. */
- if ((listen_sockets_num == 0)
- || ((dispatch_thread_running != 0)
- && (receive_thread_running != 0)))
- return (0);
-
- if (dispatch_thread_running == 0)
- {
- int status;
- status = plugin_thread_create (&dispatch_thread_id,
- NULL /* no attributes */,
- dispatch_thread,
- NULL /* no argument */);
- if (status != 0)
- {
- char errbuf[1024];
- ERROR ("network: pthread_create failed: %s",
- sstrerror (errno, errbuf,
- sizeof (errbuf)));
- }
- else
- {
- dispatch_thread_running = 1;
- }
- }
-
- if (receive_thread_running == 0)
- {
- int status;
- status = plugin_thread_create (&receive_thread_id,
- NULL /* no attributes */,
- receive_thread,
- NULL /* no argument */);
- if (status != 0)
- {
- char errbuf[1024];
- ERROR ("network: pthread_create failed: %s",
- sstrerror (errno, errbuf,
- sizeof (errbuf)));
- }
- else
- {
- receive_thread_running = 1;
- }
- }
-
- return (0);
-} /* int network_init */
-
-/*
- * The flush option of the network plugin cannot flush individual identifiers.
- * All the values are added to a buffer and sent when the buffer is full, the
- * requested value may or may not be in there, it's not worth finding out. We
- * just send the buffer if `flush' is called - if the requested value was in
- * there, good. If not, well, then there is nothing to flush.. -octo
- */
-static int network_flush (__attribute__((unused)) cdtime_t timeout,
- __attribute__((unused)) const char *identifier,
- __attribute__((unused)) user_data_t *user_data)
-{
- pthread_mutex_lock (&send_buffer_lock);
-
- if (send_buffer_fill > 0)
- flush_buffer ();
-
- pthread_mutex_unlock (&send_buffer_lock);
-
- return (0);
-} /* int network_flush */
-
-void module_register (void)
-{
- plugin_register_complex_config ("network", network_config);
- plugin_register_init ("network", network_init);
- plugin_register_flush ("network", network_flush,
- /* user_data = */ NULL);
-} /* void module_register */
-
-/* vim: set fdm=marker : */