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                         max_conns = MAX_CONNS;
 191                 }
 192                 else if (tmp > MAX_CONNS_LIMIT) {
 193                         fprintf (stderr, "email plugin: `MaxConns' was set to invalid "
 194                                         "value %li, will use hardcoded limit %i.\n",
 195                                         tmp, MAX_CONNS_LIMIT);
 196                         max_conns = MAX_CONNS_LIMIT;
 197                 }
 198                 else {
 199                         max_conns = (int)tmp;
 200                 }
 201         }
 202         else {
 203                 return -1;
 204         }
 205         return 0;
 206 } /* static int email_config (char *, char *) */
 207
 208 /* Increment the value of the given name in the given list by incr. */
 209 static void type_list_incr (type_list_t *list, char *name, int incr)
 210 {
 211         if (NULL == list->head) {
 212                 list->head = (type_t *)smalloc (sizeof (type_t));
 213
 214                 list->head->name  = sstrdup (name);
 215                 list->head->value = incr;
 216                 list->head->next  = NULL;
 217
 218                 list->tail = list->head;
 219         }
 220         else {
 221                 type_t *ptr;
 222
 223                 for (ptr = list->head; NULL != ptr; ptr = ptr->next) {
 224                         if (0 == strcmp (name, ptr->name))
 225                                 break;
 226                 }
 227
 228                 if (NULL == ptr) {
 229                         list->tail->next = (type_t *)smalloc (sizeof (type_t));
 230                         list->tail = list->tail->next;
 231
 232                         list->tail->name  = sstrdup (name);
 233                         list->tail->value = incr;
 234                         list->tail->next  = NULL;
 235                 }
 236                 else {
 237                         ptr->value += incr;
 238                 }
 239         }
 240         return;
 241 } /* static void type_list_incr (type_list_t *, char *) */
 242
 243 static void *collect (void *arg)
 244 {
 245         collector_t *this = (collector_t *)arg;
 246         pthread_t    self = pthread_self ();
 247
 248         while (1) {
 249                 int loop = 1;
 250
 251                 conn_t *connection;
 252
 253                 pthread_mutex_lock (&conns_mutex);
 254
 255                 while (NULL == conns.head) {
 256                         pthread_cond_wait (&conn_available, &conns_mutex);
 257                 }
 258
 259                 connection = conns.head;
 260                 conns.head = conns.head->next;
 261
 262                 if (NULL == conns.head) {
 263                         conns.tail = NULL;
 264                 }
 265
 266                 pthread_mutex_unlock (&conns_mutex);
 267
 268                 /* make the socket available to the global
 269                  * thread and connection management */
 270                 this->socket = connection->socket;
 271
 272                 log_debug ("[thread #%5lu] handling connection on fd #%i",
 273                                 self, fileno (this->socket));
 274
 275                 while (loop) {
 276                         /* 256 bytes ought to be enough for anybody ;-) */
 277                         char line[256 + 1]; /* line + '\0' */
 278                         int  len = 0;
 279
 280                         errno = 0;
 281                         if (NULL == fgets (line, sizeof (line), this->socket)) {
 282                                 loop = 0;
 283
 284                                 if (0 != errno) {
 285                                         char errbuf[1024];
 286                                         log_err ("[thread #%5lu] reading from socket (fd #%i) "
 287                                                         "failed: %s", self, fileno (this->socket),
 288                                                         sstrerror (errno, errbuf, sizeof (errbuf)));
 289                                 }
 290                                 break;
 291                         }
 292
 293                         len = strlen (line);
 294                         if (('\n' != line[len - 1]) && ('\r' != line[len - 1])) {
 295                                 log_warn ("[thread #%5lu] line too long (> %lu characters): "
 296                                                 "'%s' (truncated)", self, sizeof (line) - 1, line);
 297
 298                                 while (NULL != fgets (line, sizeof (line), this->socket))
 299                                         if (('\n' == line[len - 1]) || ('\r' == line[len - 1]))
 300                                                 break;
 301                                 continue;
 302                         }
 303
 304                         line[len - 1] = '\0';
 305
 306                         log_debug ("[thread #%5lu] line = '%s'", self, line);
 307
 308                         if (':' != line[1]) {
 309                                 log_err ("[thread #%5lu] syntax error in line '%s'",
 310                                                 self, 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 ("[thread #%5lu] syntax error in line '%s'",
 322                                                         self, line);
 323                                         continue;
 324                                 }
 325
 326                                 bytes = atoi (tmp);
 327
 328                                 pthread_mutex_lock (&count_mutex);
 329                                 type_list_incr (&list_count, type, 1);
 330                                 pthread_mutex_unlock (&count_mutex);
 331
 332                                 if (bytes > 0) {
 333                                         pthread_mutex_lock (&size_mutex);
 334                                         type_list_incr (&list_size, type, bytes);
 335                                         pthread_mutex_unlock (&size_mutex);
 336                                 }
 337                         }
 338                         else if ('s' == line[0]) { /* s:<value> */
 339                                 pthread_mutex_lock (&score_mutex);
 340                                 score = (score * (double)score_count + atof (line + 2))
 341                                                 / (double)(score_count + 1);
 342                                 ++score_count;
 343                                 pthread_mutex_unlock (&score_mutex);
 344                         }
 345                         else if ('c' == line[0]) { /* c:<type1>[,<type2>,...] */
 346                                 char *ptr  = NULL;
 347                                 char *type = strtok_r (line + 2, ",", &ptr);
 348
 349                                 do {
 350                                         pthread_mutex_lock (&check_mutex);
 351                                         type_list_incr (&list_check, type, 1);
 352                                         pthread_mutex_unlock (&check_mutex);
 353                                 } while (NULL != (type = strtok_r (NULL, ",", &ptr)));
 354                         }
 355                         else {
 356                                 log_err ("[thread #%5lu] unknown type '%c'", self, line[0]);
 357                         }
 358                 } /* while (loop) */
 359
 360                 log_debug ("[thread #%5lu] shutting down connection on fd #%i",
 361                                 pthread_self (), fileno (this->socket));
 362
 363                 fclose (connection->socket);
 364                 free (connection);
 365
 366                 this->socket = NULL;
 367
 368                 pthread_mutex_lock (&available_mutex);
 369                 ++available_collectors;
 370                 pthread_mutex_unlock (&available_mutex);
 371
 372                 pthread_cond_signal (&collector_available);
 373         } /* while (1) */
 374
 375         pthread_exit ((void *)0);
 376 } /* static void *collect (void *) */
 377
 378 static void *open_connection (void *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
 397         strncpy (addr.sun_path, path, (size_t)(UNIX_PATH_MAX - 1));
 398         addr.sun_path[UNIX_PATH_MAX - 1] = '\0';
 399
 400         errno = 0;
 401         if (-1 == bind (connector_socket, (struct sockaddr *)&addr,
 402                                 offsetof (struct sockaddr_un, sun_path)
 403                                         + strlen(addr.sun_path))) {
 404                 char errbuf[1024];
 405                 disabled = 1;
 406                 close (connector_socket);
 407                 connector_socket = -1;
 408                 log_err ("bind() failed: %s",
 409                                 sstrerror (errno, errbuf, sizeof (errbuf)));
 410                 pthread_exit ((void *)1);
 411         }
 412
 413         errno = 0;
 414         if (-1 == listen (connector_socket, 5)) {
 415                 char errbuf[1024];
 416                 disabled = 1;
 417                 close (connector_socket);
 418                 connector_socket = -1;
 419                 log_err ("listen() failed: %s",
 420                                 sstrerror (errno, errbuf, sizeof (errbuf)));
 421                 pthread_exit ((void *)1);
 422         }
 423
 424         {
 425                 struct group sg;
 426                 struct group *grp;
 427                 char grbuf[2048];
 428                 int status;
 429
 430                 grp = NULL;
 431                 status = getgrnam_r (group, &sg, grbuf, sizeof (grbuf), &grp);
 432                 if (status != 0)
 433                 {
 434                         char errbuf[1024];
 435                         log_warn ("getgrnam_r (%s) failed: %s", group,
 436                                         sstrerror (errno, errbuf, sizeof (errbuf)));
 437                 }
 438                 else if (grp == NULL)
 439                 {
 440                         log_warn ("No such group: `%s'", group);
 441                 }
 442                 else
 443                 {
 444                         status = chown (path, (uid_t) -1, grp->gr_gid);
 445                         if (status != 0)
 446                         {
 447                                 char errbuf[1024];
 448                                 log_warn ("chown (%s, -1, %i) failed: %s",
 449                                                 path, (int) grp->gr_gid,
 450                                                 sstrerror (errno, errbuf, sizeof (errbuf)));
 451                         }
 452                 }
 453         }
 454
 455         errno = 0;
 456         if (0 != chmod (path, sock_perms)) {
 457                 char errbuf[1024];
 458                 log_warn ("chmod() failed: %s",
 459                                 sstrerror (errno, errbuf, sizeof (errbuf)));
 460         }
 461
 462         { /* initialize collector threads */
 463                 int i   = 0;
 464                 int err = 0;
 465
 466                 pthread_attr_t ptattr;
 467
 468                 conns.head = NULL;
 469                 conns.tail = NULL;
 470
 471                 pthread_attr_init (&ptattr);
 472                 pthread_attr_setdetachstate (&ptattr, PTHREAD_CREATE_DETACHED);
 473
 474                 available_collectors = max_conns;
 475
 476                 collectors =
 477                         (collector_t **)smalloc (max_conns * sizeof (collector_t *));
 478
 479                 for (i = 0; i < max_conns; ++i) {
 480                         collectors[i] = (collector_t *)smalloc (sizeof (collector_t));
 481                         collectors[i]->socket = NULL;
 482
 483                         if (0 != (err = pthread_create (&collectors[i]->thread, &ptattr,
 484                                                         collect, collectors[i]))) {
 485                                 char errbuf[1024];
 486                                 log_err ("pthread_create() failed: %s",
 487                                                 sstrerror (errno, errbuf, sizeof (errbuf)));
 488                                 collectors[i]->thread = (pthread_t) 0;
 489                         }
 490                 }
 491
 492                 pthread_attr_destroy (&ptattr);
 493         }
 494
 495         while (1) {
 496                 int remote = 0;
 497
 498                 conn_t *connection;
 499
 500                 pthread_mutex_lock (&available_mutex);
 501
 502                 while (0 == available_collectors) {
 503                         pthread_cond_wait (&collector_available, &available_mutex);
 504                 }
 505
 506                 --available_collectors;
 507
 508                 pthread_mutex_unlock (&available_mutex);
 509
 510                 do {
 511                         errno = 0;
 512                         if (-1 == (remote = accept (connector_socket, NULL, NULL))) {
 513                                 if (EINTR != errno) {
 514                                         char errbuf[1024];
 515                                         disabled = 1;
 516                                         close (connector_socket);
 517                                         connector_socket = -1;
 518                                         log_err ("accept() failed: %s",
 519                                                         sstrerror (errno, errbuf, sizeof (errbuf)));
 520                                         pthread_exit ((void *)1);
 521                                 }
 522                         }
 523                 } while (EINTR == errno);
 524
 525                 connection = (conn_t *)smalloc (sizeof (conn_t));
 526
 527                 connection->socket = fdopen (remote, "r");
 528                 connection->next   = NULL;
 529
 530                 if (NULL == connection->socket) {
 531                         close (remote);
 532                         continue;
 533                 }
 534
 535                 pthread_mutex_lock (&conns_mutex);
 536
 537                 if (NULL == conns.head) {
 538                         conns.head = connection;
 539                         conns.tail = connection;
 540                 }
 541                 else {
 542                         conns.tail->next = connection;
 543                         conns.tail = conns.tail->next;
 544                 }
 545
 546                 pthread_mutex_unlock (&conns_mutex);
 547
 548                 pthread_cond_signal (&conn_available);
 549         }
 550         pthread_exit ((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 = pthread_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 int email_shutdown (void)
 570 {
 571         type_t *ptr = NULL;
 572
 573         int i = 0;
 574
 575         if (connector != ((pthread_t) 0)) {
 576                 pthread_kill (connector, SIGTERM);
 577                 connector = (pthread_t) 0;
 578         }
 579
 580         if (connector_socket >= 0) {
 581                 close (connector_socket);
 582                 connector_socket = -1;
 583         }
 584
 585         /* don't allow any more connections to be processed */
 586         pthread_mutex_lock (&conns_mutex);
 587
 588         available_collectors = 0;
 589
 590         if (collectors != NULL) {
 591                 for (i = 0; i < max_conns; ++i) {
 592                         if (collectors[i] == NULL)
 593                                 continue;
 594
 595                         if (collectors[i]->thread != ((pthread_t) 0)) {
 596                                 pthread_kill (collectors[i]->thread, SIGTERM);
 597                                 collectors[i]->thread = (pthread_t) 0;
 598                         }
 599
 600                         if (collectors[i]->socket != NULL) {
 601                                 fclose (collectors[i]->socket);
 602                                 collectors[i]->socket = NULL;
 603                         }
 604
 605                         sfree (collectors[i]);
 606                 }
 607                 sfree (collectors);
 608         } /* if (collectors != NULL) */
 609
 610         pthread_mutex_unlock (&conns_mutex);
 611
 612         for (ptr = list_count.head; NULL != ptr; ptr = ptr->next) {
 613                 free (ptr->name);
 614                 free (ptr);
 615         }
 616
 617         for (ptr = list_count_copy.head; NULL != ptr; ptr = ptr->next) {
 618                 free (ptr->name);
 619                 free (ptr);
 620         }
 621
 622         for (ptr = list_size.head; NULL != ptr; ptr = ptr->next) {
 623                 free (ptr->name);
 624                 free (ptr);
 625         }
 626
 627         for (ptr = list_size_copy.head; NULL != ptr; ptr = ptr->next) {
 628                 free (ptr->name);
 629                 free (ptr);
 630         }
 631
 632         for (ptr = list_check.head; NULL != ptr; ptr = ptr->next) {
 633                 free (ptr->name);
 634                 free (ptr);
 635         }
 636
 637         for (ptr = list_check_copy.head; NULL != ptr; ptr = ptr->next) {
 638                 free (ptr->name);
 639                 free (ptr);
 640         }
 641
 642         unlink ((NULL == sock_file) ? SOCK_PATH : sock_file);
 643
 644         sfree (sock_file);
 645         sfree (sock_group);
 646         return (0);
 647 } /* static void email_shutdown (void) */
 648
 649 static void email_submit (const char *type, const char *type_instance, gauge_t value)
 650 {
 651         value_t values[1];
 652         value_list_t vl = VALUE_LIST_INIT;
 653
 654         values[0].gauge = value;
 655
 656         vl.values = values;
 657         vl.values_len = 1;
 658         vl.time = time (NULL);
 659         sstrncpy (vl.host, hostname_g, sizeof (vl.host));
 660         sstrncpy (vl.plugin, "email", sizeof (vl.plugin));
 661         strncpy (vl.type_instance, type_instance, sizeof (vl.type_instance));
 662
 663         plugin_dispatch_values (type, &vl);
 664 } /* void email_submit */
 665
 666 /* Copy list l1 to list l2. l2 may partly exist already, but it is assumed
 667  * that neither the order nor the name of any element of either list is
 668  * changed and no elements are deleted. The values of l1 are reset to zero
 669  * after they have been copied to l2. */
 670 static void copy_type_list (type_list_t *l1, type_list_t *l2)
 671 {
 672         type_t *ptr1;
 673         type_t *ptr2;
 674
 675         type_t *last = NULL;
 676
 677         for (ptr1 = l1->head, ptr2 = l2->head; NULL != ptr1;
 678                         ptr1 = ptr1->next, last = ptr2, ptr2 = ptr2->next) {
 679                 if (NULL == ptr2) {
 680                         ptr2 = (type_t *)smalloc (sizeof (type_t));
 681                         ptr2->name = NULL;
 682                         ptr2->next = NULL;
 683
 684                         if (NULL == last) {
 685                                 l2->head = ptr2;
 686                         }
 687                         else {
 688                                 last->next = ptr2;
 689                         }
 690
 691                         l2->tail = ptr2;
 692                 }
 693
 694                 if (NULL == ptr2->name) {
 695                         ptr2->name = sstrdup (ptr1->name);
 696                 }
 697
 698                 ptr2->value = ptr1->value;
 699                 ptr1->value = 0;
 700         }
 701         return;
 702 }
 703
 704 static int email_read (void)
 705 {
 706         type_t *ptr;
 707
 708         double score_old;
 709         int score_count_old;
 710
 711         if (disabled)
 712                 return (-1);
 713
 714         /* email count */
 715         pthread_mutex_lock (&count_mutex);
 716
 717         copy_type_list (&list_count, &list_count_copy);
 718
 719         pthread_mutex_unlock (&count_mutex);
 720
 721         for (ptr = list_count_copy.head; NULL != ptr; ptr = ptr->next) {
 722                 email_submit ("email_count", ptr->name, ptr->value);
 723         }
 724
 725         /* email size */
 726         pthread_mutex_lock (&size_mutex);
 727
 728         copy_type_list (&list_size, &list_size_copy);
 729
 730         pthread_mutex_unlock (&size_mutex);
 731
 732         for (ptr = list_size_copy.head; NULL != ptr; ptr = ptr->next) {
 733                 email_submit ("email_size", ptr->name, ptr->value);
 734         }
 735
 736         /* spam score */
 737         pthread_mutex_lock (&score_mutex);
 738
 739         score_old = score;
 740         score_count_old = score_count;
 741         score = 0.0;
 742         score_count = 0;
 743
 744         pthread_mutex_unlock (&score_mutex);
 745
 746         if (score_count_old > 0)
 747                 email_submit ("spam_score", "", score_old);
 748
 749         /* spam checks */
 750         pthread_mutex_lock (&check_mutex);
 751
 752         copy_type_list (&list_check, &list_check_copy);
 753
 754         pthread_mutex_unlock (&check_mutex);
 755
 756         for (ptr = list_check_copy.head; NULL != ptr; ptr = ptr->next)
 757                 email_submit ("spam_check", ptr->name, ptr->value);
 758
 759         return (0);
 760 } /* int email_read */
 761
 762 void module_register (void)
 763 {
 764         plugin_register_config ("email", email_config, config_keys, config_keys_num);
 765         plugin_register_init ("email", email_init);
 766         plugin_register_read ("email", email_read);
 767         plugin_register_shutdown ("email", email_shutdown);
 768 } /* void module_register */
 769
 770 /* vim: set sw=4 ts=4 tw=78 noexpandtab : */