src/email.c

   1 /**
   2  * collectd - src/email.c
   3  * Copyright (C) 2006-2008  Sebastian Harl
   4  *
   5  * This program is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License as published by the
   7  * Free Software Foundation; only version 2 of the License is applicable.
   8  *
   9  * This program is distributed in the hope that it will be useful, but
  10  * WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along
  15  * with this program; if not, write to the Free Software Foundation, Inc.,
  16  * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
  17  *
  18  * Author:
  19  *   Sebastian Harl <sh at tokkee.org>
  20  **/
  21
  22 /*
  23  * This plugin communicates with a spam filter, a virus scanner or similar
  24  * software using a UNIX socket and a very simple protocol:
  25  *
  26  * e-mail type (e.g. ham, spam, virus, ...) and size
  27  * e:<type>:<bytes>
  28  *
  29  * spam score
  30  * s:<value>
  31  *
  32  * successful spam checks
  33  * c:<type1>[,<type2>,...]
  34  */
  35
  36 #include "collectd.h"
  37 #include "common.h"
  38 #include "plugin.h"
  39
  40 #include "configfile.h"
  41
  42 #include <stddef.h>
  43
  44 #if HAVE_LIBPTHREAD
  45 # include <pthread.h>
  46 #endif
  47
  48 #include <sys/socket.h>
  49 #include <sys/un.h>
  50 #include <sys/select.h>
  51
  52 /* some systems (e.g. Darwin) seem to not define UNIX_PATH_MAX at all */
  53 #ifndef UNIX_PATH_MAX
  54 # define UNIX_PATH_MAX sizeof (((struct sockaddr_un *)0)->sun_path)
  55 #endif /* UNIX_PATH_MAX */
  56
  57 #if HAVE_GRP_H
  58 #       include <grp.h>
  59 #endif /* HAVE_GRP_H */
  60
  61 #define SOCK_PATH LOCALSTATEDIR"/run/"PACKAGE_NAME"-email"
  62 #define MAX_CONNS 5
  63 #define MAX_CONNS_LIMIT 16384
  64
  65 #define log_debug(...) DEBUG ("email: "__VA_ARGS__)
  66 #define log_err(...) ERROR ("email: "__VA_ARGS__)
  67 #define log_warn(...) WARNING ("email: "__VA_ARGS__)
  68
  69 /*
  70  * Private data structures
  71  */
  72 /* linked list of email and check types */
  73 typedef struct type {
  74         char        *name;
  75         int         value;
  76         struct type *next;
  77 } type_t;
  78
  79 typedef struct {
  80         type_t *head;
  81         type_t *tail;
  82 } type_list_t;
  83
  84 /* collector thread control information */
  85 typedef struct collector {
  86         pthread_t thread;
  87
  88         /* socket descriptor of the current/last connection */
  89         FILE *socket;
  90 } collector_t;
  91
  92 /* linked list of pending connections */
  93 typedef struct conn {
  94         /* socket to read data from */
  95         FILE *socket;
  96
  97         /* linked list of connections */
  98         struct conn *next;
  99 } conn_t;
 100
 101 typedef struct {
 102         conn_t *head;
 103         conn_t *tail;
 104 } conn_list_t;
 105
 106 /*
 107  * Private variables
 108  */
 109 /* valid configuration file keys */
 110 static const char *config_keys[] =
 111 {
 112         "SocketFile",
 113         "SocketGroup",
 114         "SocketPerms",
 115         "MaxConns"
 116 };
 117 static int config_keys_num = STATIC_ARRAY_SIZE (config_keys);
 118
 119 /* socket configuration */
 120 static char *sock_file  = NULL;
 121 static char *sock_group = NULL;
 122 static int  sock_perms  = S_IRWXU | S_IRWXG;
 123 static int  max_conns   = MAX_CONNS;
 124
 125 /* state of the plugin */
 126 static int disabled = 0;
 127
 128 /* thread managing "client" connections */
 129 static pthread_t connector = (pthread_t) 0;
 130 static int connector_socket = -1;
 131
 132 /* tell the collector threads that a new connection is available */
 133 static pthread_cond_t conn_available = PTHREAD_COND_INITIALIZER;
 134
 135 /* connections that are waiting to be processed */
 136 static pthread_mutex_t conns_mutex = PTHREAD_MUTEX_INITIALIZER;
 137 static conn_list_t conns;
 138
 139 /* tell the connector thread that a collector is available */
 140 static pthread_cond_t collector_available = PTHREAD_COND_INITIALIZER;
 141
 142 /* collector threads */
 143 static collector_t **collectors = NULL;
 144
 145 static pthread_mutex_t available_mutex = PTHREAD_MUTEX_INITIALIZER;
 146 static int available_collectors;
 147
 148 static pthread_mutex_t count_mutex = PTHREAD_MUTEX_INITIALIZER;
 149 static type_list_t list_count;
 150 static type_list_t list_count_copy;
 151
 152 static pthread_mutex_t size_mutex = PTHREAD_MUTEX_INITIALIZER;
 153 static type_list_t list_size;
 154 static type_list_t list_size_copy;
 155
 156 static pthread_mutex_t score_mutex = PTHREAD_MUTEX_INITIALIZER;
 157 static double score;
 158 static int score_count;
 159
 160 static pthread_mutex_t check_mutex = PTHREAD_MUTEX_INITIALIZER;
 161 static type_list_t list_check;
 162 static type_list_t list_check_copy;
 163
 164 /*
 165  * Private functions
 166  */
 167 static int email_config (const char *key, const char *value)
 168 {
 169         if (0 == strcasecmp (key, "SocketFile")) {
 170                 if (NULL != sock_file)
 171                         free (sock_file);
 172                 sock_file = sstrdup (value);
 173         }
 174         else if (0 == strcasecmp (key, "SocketGroup")) {
 175                 if (NULL != sock_group)
 176                         free (sock_group);
 177                 sock_group = sstrdup (value);
 178         }
 179         else if (0 == strcasecmp (key, "SocketPerms")) {
 180                 /* the user is responsible for providing reasonable values */
 181                 sock_perms = (int)strtol (value, NULL, 8);
 182         }
 183         else if (0 == strcasecmp (key, "MaxConns")) {
 184                 long int tmp = strtol (value, NULL, 0);
 185
 186                 if (tmp < 1) {
 187                         fprintf (stderr, "email plugin: `MaxConns' was set to invalid "
 188                                         "value %li, will use default %i.\n",
 189                                         tmp, MAX_CONNS);
 190                         ERROR ("email plugin: `MaxConns' was set to invalid "
 191                                         "value %li, will use default %i.\n",
 192                                         tmp, MAX_CONNS);
 193                         max_conns = MAX_CONNS;
 194                 }
 195                 else if (tmp > MAX_CONNS_LIMIT) {
 196                         fprintf (stderr, "email plugin: `MaxConns' was set to invalid "
 197                                         "value %li, will use hardcoded limit %i.\n",
 198                                         tmp, MAX_CONNS_LIMIT);
 199                         ERROR ("email plugin: `MaxConns' was set to invalid "
 200                                         "value %li, will use hardcoded limit %i.\n",
 201                                         tmp, MAX_CONNS_LIMIT);
 202                         max_conns = MAX_CONNS_LIMIT;
 203                 }
 204                 else {
 205                         max_conns = (int)tmp;
 206                 }
 207         }
 208         else {
 209                 return -1;
 210         }
 211         return 0;
 212 } /* static int email_config (char *, char *) */
 213
 214 /* Increment the value of the given name in the given list by incr. */
 215 static void type_list_incr (type_list_t *list, char *name, int incr)
 216 {
 217         if (NULL == list->head) {
 218                 list->head = (type_t *)smalloc (sizeof (type_t));
 219
 220                 list->head->name  = sstrdup (name);
 221                 list->head->value = incr;
 222                 list->head->next  = NULL;
 223
 224                 list->tail = list->head;
 225         }
 226         else {
 227                 type_t *ptr;
 228
 229                 for (ptr = list->head; NULL != ptr; ptr = ptr->next) {
 230                         if (0 == strcmp (name, ptr->name))
 231                                 break;
 232                 }
 233
 234                 if (NULL == ptr) {
 235                         list->tail->next = (type_t *)smalloc (sizeof (type_t));
 236                         list->tail = list->tail->next;
 237
 238                         list->tail->name  = sstrdup (name);
 239                         list->tail->value = incr;
 240                         list->tail->next  = NULL;
 241                 }
 242                 else {
 243                         ptr->value += incr;
 244                 }
 245         }
 246         return;
 247 } /* static void type_list_incr (type_list_t *, char *) */
 248
 249 static void *collect (void *arg)
 250 {
 251         collector_t *this = (collector_t *)arg;
 252
 253         while (1) {
 254                 conn_t *connection;
 255
 256                 pthread_mutex_lock (&conns_mutex);
 257
 258                 while (NULL == conns.head) {
 259                         pthread_cond_wait (&conn_available, &conns_mutex);
 260                 }
 261
 262                 connection = conns.head;
 263                 conns.head = conns.head->next;
 264
 265                 if (NULL == conns.head) {
 266                         conns.tail = NULL;
 267                 }
 268
 269                 pthread_mutex_unlock (&conns_mutex);
 270
 271                 /* make the socket available to the global
 272                  * thread and connection management */
 273                 this->socket = connection->socket;
 274
 275                 log_debug ("collect: handling connection on fd #%i",
 276                                 fileno (this->socket));
 277
 278                 while (42) {
 279                         /* 256 bytes ought to be enough for anybody ;-) */
 280                         char line[256 + 1]; /* line + '\0' */
 281                         int  len = 0;
 282
 283                         errno = 0;
 284                         if (NULL == fgets (line, sizeof (line), this->socket)) {
 285                                 if (0 != errno) {
 286                                         char errbuf[1024];
 287                                         log_err ("collect: reading from socket (fd #%i) "
 288                                                         "failed: %s", fileno (this->socket),
 289                                                         sstrerror (errno, errbuf, sizeof (errbuf)));
 290                                 }
 291                                 break;
 292                         }
 293
 294                         len = strlen (line);
 295                         if (('\n' != line[len - 1]) && ('\r' != line[len - 1])) {
 296                                 log_warn ("collect: line too long (> %zu characters): "
 297                                                 "'%s' (truncated)", sizeof (line) - 1, line);
 298
 299                                 while (NULL != fgets (line, sizeof (line), this->socket))
 300                                         if (('\n' == line[len - 1]) || ('\r' == line[len - 1]))
 301                                                 break;
 302                                 continue;
 303                         }
 304
 305                         line[len - 1] = '\0';
 306
 307                         log_debug ("collect: line = '%s'", line);
 308
 309                         if (':' != line[1]) {
 310                                 log_err ("collect: syntax error in line '%s'", line);
 311                                 continue;
 312                         }
 313
 314                         if ('e' == line[0]) { /* e:<type>:<bytes> */
 315                                 char *ptr  = NULL;
 316                                 char *type = strtok_r (line + 2, ":", &ptr);
 317                                 char *tmp  = strtok_r (NULL, ":", &ptr);
 318                                 int  bytes = 0;
 319
 320                                 if (NULL == tmp) {
 321                                         log_err ("collect: syntax error in line '%s'", line);
 322                                         continue;
 323                                 }
 324
 325                                 bytes = atoi (tmp);
 326
 327                                 pthread_mutex_lock (&count_mutex);
 328                                 type_list_incr (&list_count, type, 1);
 329                                 pthread_mutex_unlock (&count_mutex);
 330
 331                                 if (bytes > 0) {
 332                                         pthread_mutex_lock (&size_mutex);
 333                                         type_list_incr (&list_size, type, bytes);
 334                                         pthread_mutex_unlock (&size_mutex);
 335                                 }
 336                         }
 337                         else if ('s' == line[0]) { /* s:<value> */
 338                                 pthread_mutex_lock (&score_mutex);
 339                                 score = (score * (double)score_count + atof (line + 2))
 340                                                 / (double)(score_count + 1);
 341                                 ++score_count;
 342                                 pthread_mutex_unlock (&score_mutex);
 343                         }
 344                         else if ('c' == line[0]) { /* c:<type1>[,<type2>,...] */
 345                                 char *ptr  = NULL;
 346                                 char *type = strtok_r (line + 2, ",", &ptr);
 347
 348                                 do {
 349                                         pthread_mutex_lock (&check_mutex);
 350                                         type_list_incr (&list_check, type, 1);
 351                                         pthread_mutex_unlock (&check_mutex);
 352                                 } while (NULL != (type = strtok_r (NULL, ",", &ptr)));
 353                         }
 354                         else {
 355                                 log_err ("collect: unknown type '%c'", line[0]);
 356                         }
 357                 } /* while (42) */
 358
 359                 log_debug ("Shutting down connection on fd #%i",
 360                                 fileno (this->socket));
 361
 362                 fclose (connection->socket);
 363                 free (connection);
 364
 365                 this->socket = NULL;
 366
 367                 pthread_mutex_lock (&available_mutex);
 368                 ++available_collectors;
 369                 pthread_mutex_unlock (&available_mutex);
 370
 371                 pthread_cond_signal (&collector_available);
 372         } /* while (1) */
 373
 374         pthread_exit ((void *)0);
 375         return ((void *) 0);
 376 } /* static void *collect (void *) */
 377
 378 static void *open_connection (void __attribute__((unused)) *arg)
 379 {
 380         struct sockaddr_un addr;
 381
 382         char *path  = (NULL == sock_file) ? SOCK_PATH : sock_file;
 383         char *group = (NULL == sock_group) ? COLLECTD_GRP_NAME : sock_group;
 384
 385         /* create UNIX socket */
 386         errno = 0;
 387         if (-1 == (connector_socket = socket (PF_UNIX, SOCK_STREAM, 0))) {
 388                 char errbuf[1024];
 389                 disabled = 1;
 390                 log_err ("socket() failed: %s",
 391                                 sstrerror (errno, errbuf, sizeof (errbuf)));
 392                 pthread_exit ((void *)1);
 393         }
 394
 395         addr.sun_family = AF_UNIX;
 396         sstrncpy (addr.sun_path, path, (size_t)(UNIX_PATH_MAX - 1));
 397
 398         errno = 0;
 399         if (-1 == bind (connector_socket, (struct sockaddr *)&addr,
 400                                 offsetof (struct sockaddr_un, sun_path)
 401                                         + strlen(addr.sun_path))) {
 402                 char errbuf[1024];
 403                 disabled = 1;
 404                 close (connector_socket);
 405                 connector_socket = -1;
 406                 log_err ("bind() failed: %s",
 407                                 sstrerror (errno, errbuf, sizeof (errbuf)));
 408                 pthread_exit ((void *)1);
 409         }
 410
 411         errno = 0;
 412         if (-1 == listen (connector_socket, 5)) {
 413                 char errbuf[1024];
 414                 disabled = 1;
 415                 close (connector_socket);
 416                 connector_socket = -1;
 417                 log_err ("listen() failed: %s",
 418                                 sstrerror (errno, errbuf, sizeof (errbuf)));
 419                 pthread_exit ((void *)1);
 420         }
 421
 422         {
 423                 struct group sg;
 424                 struct group *grp;
 425                 char grbuf[2048];
 426                 int status;
 427
 428                 grp = NULL;
 429                 status = getgrnam_r (group, &sg, grbuf, sizeof (grbuf), &grp);
 430                 if (status != 0)
 431                 {
 432                         char errbuf[1024];
 433                         log_warn ("getgrnam_r (%s) failed: %s", group,
 434                                         sstrerror (errno, errbuf, sizeof (errbuf)));
 435                 }
 436                 else if (grp == NULL)
 437                 {
 438                         log_warn ("No such group: `%s'", group);
 439                 }
 440                 else
 441                 {
 442                         status = chown (path, (uid_t) -1, grp->gr_gid);
 443                         if (status != 0)
 444                         {
 445                                 char errbuf[1024];
 446                                 log_warn ("chown (%s, -1, %i) failed: %s",
 447                                                 path, (int) grp->gr_gid,
 448                                                 sstrerror (errno, errbuf, sizeof (errbuf)));
 449                         }
 450                 }
 451         }
 452
 453         errno = 0;
 454         if (0 != chmod (path, sock_perms)) {
 455                 char errbuf[1024];
 456                 log_warn ("chmod() failed: %s",
 457                                 sstrerror (errno, errbuf, sizeof (errbuf)));
 458         }
 459
 460         { /* initialize collector threads */
 461                 int i   = 0;
 462                 int err = 0;
 463
 464                 pthread_attr_t ptattr;
 465
 466                 conns.head = NULL;
 467                 conns.tail = NULL;
 468
 469                 pthread_attr_init (&ptattr);
 470                 pthread_attr_setdetachstate (&ptattr, PTHREAD_CREATE_DETACHED);
 471
 472                 available_collectors = max_conns;
 473
 474                 collectors =
 475                         (collector_t **)smalloc (max_conns * sizeof (collector_t *));
 476
 477                 for (i = 0; i < max_conns; ++i) {
 478                         collectors[i] = (collector_t *)smalloc (sizeof (collector_t));
 479                         collectors[i]->socket = NULL;
 480
 481                         if (0 != (err = plugin_thread_create (&collectors[i]->thread,
 482                                                         &ptattr, collect, collectors[i]))) {
 483                                 char errbuf[1024];
 484                                 log_err ("pthread_create() failed: %s",
 485                                                 sstrerror (errno, errbuf, sizeof (errbuf)));
 486                                 collectors[i]->thread = (pthread_t) 0;
 487                         }
 488                 }
 489
 490                 pthread_attr_destroy (&ptattr);
 491         }
 492
 493         while (1) {
 494                 int remote = 0;
 495
 496                 conn_t *connection;
 497
 498                 pthread_mutex_lock (&available_mutex);
 499
 500                 while (0 == available_collectors) {
 501                         pthread_cond_wait (&collector_available, &available_mutex);
 502                 }
 503
 504                 --available_collectors;
 505
 506                 pthread_mutex_unlock (&available_mutex);
 507
 508                 do {
 509                         errno = 0;
 510                         if (-1 == (remote = accept (connector_socket, NULL, NULL))) {
 511                                 if (EINTR != errno) {
 512                                         char errbuf[1024];
 513                                         disabled = 1;
 514                                         close (connector_socket);
 515                                         connector_socket = -1;
 516                                         log_err ("accept() failed: %s",
 517                                                         sstrerror (errno, errbuf, sizeof (errbuf)));
 518                                         pthread_exit ((void *)1);
 519                                 }
 520                         }
 521                 } while (EINTR == errno);
 522
 523                 connection = (conn_t *)smalloc (sizeof (conn_t));
 524
 525                 connection->socket = fdopen (remote, "r");
 526                 connection->next   = NULL;
 527
 528                 if (NULL == connection->socket) {
 529                         close (remote);
 530                         continue;
 531                 }
 532
 533                 pthread_mutex_lock (&conns_mutex);
 534
 535                 if (NULL == conns.head) {
 536                         conns.head = connection;
 537                         conns.tail = connection;
 538                 }
 539                 else {
 540                         conns.tail->next = connection;
 541                         conns.tail = conns.tail->next;
 542                 }
 543
 544                 pthread_mutex_unlock (&conns_mutex);
 545
 546                 pthread_cond_signal (&conn_available);
 547         }
 548
 549         pthread_exit ((void *) 0);
 550         return ((void *) 0);
 551 } /* static void *open_connection (void *) */
 552
 553 static int email_init (void)
 554 {
 555         int err = 0;
 556
 557         if (0 != (err = plugin_thread_create (&connector, NULL,
 558                                 open_connection, NULL))) {
 559                 char errbuf[1024];
 560                 disabled = 1;
 561                 log_err ("pthread_create() failed: %s",
 562                                 sstrerror (errno, errbuf, sizeof (errbuf)));
 563                 return (-1);
 564         }
 565
 566         return (0);
 567 } /* int email_init */
 568
 569 static void type_list_free (type_list_t *t)
 570 {
 571         type_t *this;
 572
 573         this = t->head;
 574         while (this != NULL)
 575         {
 576                 type_t *next = this->next;
 577
 578                 sfree (this->name);
 579                 sfree (this);
 580
 581                 this = next;
 582         }
 583
 584         t->head = NULL;
 585         t->tail = NULL;
 586 }
 587
 588 static int email_shutdown (void)
 589 {
 590         int i = 0;
 591
 592         if (connector != ((pthread_t) 0)) {
 593                 pthread_kill (connector, SIGTERM);
 594                 connector = (pthread_t) 0;
 595         }
 596
 597         if (connector_socket >= 0) {
 598                 close (connector_socket);
 599                 connector_socket = -1;
 600         }
 601
 602         /* don't allow any more connections to be processed */
 603         pthread_mutex_lock (&conns_mutex);
 604
 605         available_collectors = 0;
 606
 607         if (collectors != NULL) {
 608                 for (i = 0; i < max_conns; ++i) {
 609                         if (collectors[i] == NULL)
 610                                 continue;
 611
 612                         if (collectors[i]->thread != ((pthread_t) 0)) {
 613                                 pthread_kill (collectors[i]->thread, SIGTERM);
 614                                 collectors[i]->thread = (pthread_t) 0;
 615                         }
 616
 617                         if (collectors[i]->socket != NULL) {
 618                                 fclose (collectors[i]->socket);
 619                                 collectors[i]->socket = NULL;
 620                         }
 621
 622                         sfree (collectors[i]);
 623                 }
 624                 sfree (collectors);
 625         } /* if (collectors != NULL) */
 626
 627         pthread_mutex_unlock (&conns_mutex);
 628
 629         type_list_free (&list_count);
 630         type_list_free (&list_count_copy);
 631         type_list_free (&list_size);
 632         type_list_free (&list_size_copy);
 633         type_list_free (&list_check);
 634         type_list_free (&list_check_copy);
 635
 636         unlink ((NULL == sock_file) ? SOCK_PATH : sock_file);
 637
 638         sfree (sock_file);
 639         sfree (sock_group);
 640         return (0);
 641 } /* static void email_shutdown (void) */
 642
 643 static void email_submit (const char *type, const char *type_instance, gauge_t value)
 644 {
 645         value_t values[1];
 646         value_list_t vl = VALUE_LIST_INIT;
 647
 648         values[0].gauge = value;
 649
 650         vl.values = values;
 651         vl.values_len = 1;
 652         sstrncpy (vl.host, hostname_g, sizeof (vl.host));
 653         sstrncpy (vl.plugin, "email", sizeof (vl.plugin));
 654         sstrncpy (vl.type, type, sizeof (vl.type));
 655         sstrncpy (vl.type_instance, type_instance, sizeof (vl.type_instance));
 656
 657         plugin_dispatch_values (&vl);
 658 } /* void email_submit */
 659
 660 /* Copy list l1 to list l2. l2 may partly exist already, but it is assumed
 661  * that neither the order nor the name of any element of either list is
 662  * changed and no elements are deleted. The values of l1 are reset to zero
 663  * after they have been copied to l2. */
 664 static void copy_type_list (type_list_t *l1, type_list_t *l2)
 665 {
 666         type_t *ptr1;
 667         type_t *ptr2;
 668
 669         type_t *last = NULL;
 670
 671         for (ptr1 = l1->head, ptr2 = l2->head; NULL != ptr1;
 672                         ptr1 = ptr1->next, last = ptr2, ptr2 = ptr2->next) {
 673                 if (NULL == ptr2) {
 674                         ptr2 = (type_t *)smalloc (sizeof (type_t));
 675                         ptr2->name = NULL;
 676                         ptr2->next = NULL;
 677
 678                         if (NULL == last) {
 679                                 l2->head = ptr2;
 680                         }
 681                         else {
 682                                 last->next = ptr2;
 683                         }
 684
 685                         l2->tail = ptr2;
 686                 }
 687
 688                 if (NULL == ptr2->name) {
 689                         ptr2->name = sstrdup (ptr1->name);
 690                 }
 691
 692                 ptr2->value = ptr1->value;
 693                 ptr1->value = 0;
 694         }
 695         return;
 696 }
 697
 698 static int email_read (void)
 699 {
 700         type_t *ptr;
 701
 702         double score_old;
 703         int score_count_old;
 704
 705         if (disabled)
 706                 return (-1);
 707
 708         /* email count */
 709         pthread_mutex_lock (&count_mutex);
 710
 711         copy_type_list (&list_count, &list_count_copy);
 712
 713         pthread_mutex_unlock (&count_mutex);
 714
 715         for (ptr = list_count_copy.head; NULL != ptr; ptr = ptr->next) {
 716                 email_submit ("email_count", ptr->name, ptr->value);
 717         }
 718
 719         /* email size */
 720         pthread_mutex_lock (&size_mutex);
 721
 722         copy_type_list (&list_size, &list_size_copy);
 723
 724         pthread_mutex_unlock (&size_mutex);
 725
 726         for (ptr = list_size_copy.head; NULL != ptr; ptr = ptr->next) {
 727                 email_submit ("email_size", ptr->name, ptr->value);
 728         }
 729
 730         /* spam score */
 731         pthread_mutex_lock (&score_mutex);
 732
 733         score_old = score;
 734         score_count_old = score_count;
 735         score = 0.0;
 736         score_count = 0;
 737
 738         pthread_mutex_unlock (&score_mutex);
 739
 740         if (score_count_old > 0)
 741                 email_submit ("spam_score", "", score_old);
 742
 743         /* spam checks */
 744         pthread_mutex_lock (&check_mutex);
 745
 746         copy_type_list (&list_check, &list_check_copy);
 747
 748         pthread_mutex_unlock (&check_mutex);
 749
 750         for (ptr = list_check_copy.head; NULL != ptr; ptr = ptr->next)
 751                 email_submit ("spam_check", ptr->name, ptr->value);
 752
 753         return (0);
 754 } /* int email_read */
 755
 756 void module_register (void)
 757 {
 758         plugin_register_config ("email", email_config, config_keys, config_keys_num);
 759         plugin_register_init ("email", email_init);
 760         plugin_register_read ("email", email_read);
 761         plugin_register_shutdown ("email", email_shutdown);
 762 } /* void module_register */
 763
 764 /* vim: set sw=4 ts=4 tw=78 noexpandtab : */