src/email.c

   1 /**
   2  * collectd - src/email.c
   3  * Copyright (C) 2006-2008  Sebastian Harl
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the "Software"),
   7  * to deal in the Software without restriction, including without limitation
   8  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   9  * and/or sell copies of the Software, and to permit persons to whom the
  10  * Software is furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice shall be included in
  13  * all copies or substantial portions of the Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  18  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  21  * DEALINGS IN THE SOFTWARE.
  22  *
  23  * Authors:
  24  *   Sebastian Harl <sh at tokkee.org>
  25  **/
  26
  27 /*
  28  * This plugin communicates with a spam filter, a virus scanner or similar
  29  * software using a UNIX socket and a very simple protocol:
  30  *
  31  * e-mail type (e.g. ham, spam, virus, ...) and size
  32  * e:<type>:<bytes>
  33  *
  34  * spam score
  35  * s:<value>
  36  *
  37  * successful spam checks
  38  * c:<type1>[,<type2>,...]
  39  */
  40
  41 #include "collectd.h"
  42
  43 #include "common.h"
  44 #include "plugin.h"
  45
  46 #include "configfile.h"
  47
  48 #include <stddef.h>
  49
  50 #include <sys/un.h>
  51 #include <sys/select.h>
  52
  53 /* some systems (e.g. Darwin) seem to not define UNIX_PATH_MAX at all */
  54 #ifndef UNIX_PATH_MAX
  55 # define UNIX_PATH_MAX sizeof (((struct sockaddr_un *)0)->sun_path)
  56 #endif /* UNIX_PATH_MAX */
  57
  58 #if HAVE_GRP_H
  59 #       include <grp.h>
  60 #endif /* HAVE_GRP_H */
  61
  62 #define SOCK_PATH LOCALSTATEDIR"/run/"PACKAGE_NAME"-email"
  63 #define MAX_CONNS 5
  64 #define MAX_CONNS_LIMIT 16384
  65
  66 #define log_debug(...) DEBUG ("email: "__VA_ARGS__)
  67 #define log_err(...) ERROR ("email: "__VA_ARGS__)
  68 #define log_warn(...) WARNING ("email: "__VA_ARGS__)
  69
  70 /*
  71  * Private data structures
  72  */
  73 /* linked list of email and check types */
  74 typedef struct type {
  75         char        *name;
  76         int         value;
  77         struct type *next;
  78 } type_t;
  79
  80 typedef struct {
  81         type_t *head;
  82         type_t *tail;
  83 } type_list_t;
  84
  85 /* collector thread control information */
  86 typedef struct collector {
  87         pthread_t thread;
  88
  89         /* socket descriptor of the current/last connection */
  90         FILE *socket;
  91 } collector_t;
  92
  93 /* linked list of pending connections */
  94 typedef struct conn {
  95         /* socket to read data from */
  96         FILE *socket;
  97
  98         /* linked list of connections */
  99         struct conn *next;
 100 } conn_t;
 101
 102 typedef struct {
 103         conn_t *head;
 104         conn_t *tail;
 105 } conn_list_t;
 106
 107 /*
 108  * Private variables
 109  */
 110 /* valid configuration file keys */
 111 static const char *config_keys[] =
 112 {
 113         "SocketFile",
 114         "SocketGroup",
 115         "SocketPerms",
 116         "MaxConns"
 117 };
 118 static int config_keys_num = STATIC_ARRAY_SIZE (config_keys);
 119
 120 /* socket configuration */
 121 static char *sock_file  = NULL;
 122 static char *sock_group = NULL;
 123 static int  sock_perms  = S_IRWXU | S_IRWXG;
 124 static int  max_conns   = MAX_CONNS;
 125
 126 /* state of the plugin */
 127 static int disabled = 0;
 128
 129 /* thread managing "client" connections */
 130 static pthread_t connector = (pthread_t) 0;
 131 static int connector_socket = -1;
 132
 133 /* tell the collector threads that a new connection is available */
 134 static pthread_cond_t conn_available = PTHREAD_COND_INITIALIZER;
 135
 136 /* connections that are waiting to be processed */
 137 static pthread_mutex_t conns_mutex = PTHREAD_MUTEX_INITIALIZER;
 138 static conn_list_t conns;
 139
 140 /* tell the connector thread that a collector is available */
 141 static pthread_cond_t collector_available = PTHREAD_COND_INITIALIZER;
 142
 143 /* collector threads */
 144 static collector_t **collectors = NULL;
 145
 146 static pthread_mutex_t available_mutex = PTHREAD_MUTEX_INITIALIZER;
 147 static int available_collectors;
 148
 149 static pthread_mutex_t count_mutex = PTHREAD_MUTEX_INITIALIZER;
 150 static type_list_t list_count;
 151 static type_list_t list_count_copy;
 152
 153 static pthread_mutex_t size_mutex = PTHREAD_MUTEX_INITIALIZER;
 154 static type_list_t list_size;
 155 static type_list_t list_size_copy;
 156
 157 static pthread_mutex_t score_mutex = PTHREAD_MUTEX_INITIALIZER;
 158 static double score;
 159 static int score_count;
 160
 161 static pthread_mutex_t check_mutex = PTHREAD_MUTEX_INITIALIZER;
 162 static type_list_t list_check;
 163 static type_list_t list_check_copy;
 164
 165 /*
 166  * Private functions
 167  */
 168 static int email_config (const char *key, const char *value)
 169 {
 170         if (0 == strcasecmp (key, "SocketFile")) {
 171                 if (NULL != sock_file)
 172                         free (sock_file);
 173                 sock_file = sstrdup (value);
 174         }
 175         else if (0 == strcasecmp (key, "SocketGroup")) {
 176                 if (NULL != sock_group)
 177                         free (sock_group);
 178                 sock_group = sstrdup (value);
 179         }
 180         else if (0 == strcasecmp (key, "SocketPerms")) {
 181                 /* the user is responsible for providing reasonable values */
 182                 sock_perms = (int)strtol (value, NULL, 8);
 183         }
 184         else if (0 == strcasecmp (key, "MaxConns")) {
 185                 long int tmp = strtol (value, NULL, 0);
 186
 187                 if (tmp < 1) {
 188                         fprintf (stderr, "email plugin: `MaxConns' was set to invalid "
 189                                         "value %li, will use default %i.\n",
 190                                         tmp, MAX_CONNS);
 191                         ERROR ("email plugin: `MaxConns' was set to invalid "
 192                                         "value %li, will use default %i.\n",
 193                                         tmp, MAX_CONNS);
 194                         max_conns = MAX_CONNS;
 195                 }
 196                 else if (tmp > MAX_CONNS_LIMIT) {
 197                         fprintf (stderr, "email plugin: `MaxConns' was set to invalid "
 198                                         "value %li, will use hardcoded limit %i.\n",
 199                                         tmp, MAX_CONNS_LIMIT);
 200                         ERROR ("email plugin: `MaxConns' was set to invalid "
 201                                         "value %li, will use hardcoded limit %i.\n",
 202                                         tmp, MAX_CONNS_LIMIT);
 203                         max_conns = MAX_CONNS_LIMIT;
 204                 }
 205                 else {
 206                         max_conns = (int)tmp;
 207                 }
 208         }
 209         else {
 210                 return -1;
 211         }
 212         return 0;
 213 } /* static int email_config (char *, char *) */
 214
 215 /* Increment the value of the given name in the given list by incr. */
 216 static void type_list_incr (type_list_t *list, char *name, int incr)
 217 {
 218         if (NULL == list->head) {
 219                 list->head = smalloc (sizeof (*list->head));
 220
 221                 list->head->name  = sstrdup (name);
 222                 list->head->value = incr;
 223                 list->head->next  = NULL;
 224
 225                 list->tail = list->head;
 226         }
 227         else {
 228                 type_t *ptr;
 229
 230                 for (ptr = list->head; NULL != ptr; ptr = ptr->next) {
 231                         if (0 == strcmp (name, ptr->name))
 232                                 break;
 233                 }
 234
 235                 if (NULL == ptr) {
 236                         list->tail->next = smalloc (sizeof (*list->tail->next));
 237                         list->tail = list->tail->next;
 238
 239                         list->tail->name  = sstrdup (name);
 240                         list->tail->value = incr;
 241                         list->tail->next  = NULL;
 242                 }
 243                 else {
 244                         ptr->value += incr;
 245                 }
 246         }
 247         return;
 248 } /* static void type_list_incr (type_list_t *, char *) */
 249
 250 static void *collect (void *arg)
 251 {
 252         collector_t *this = (collector_t *)arg;
 253
 254         while (1) {
 255                 conn_t *connection;
 256
 257                 pthread_mutex_lock (&conns_mutex);
 258
 259                 while (NULL == conns.head) {
 260                         pthread_cond_wait (&conn_available, &conns_mutex);
 261                 }
 262
 263                 connection = conns.head;
 264                 conns.head = conns.head->next;
 265
 266                 if (NULL == conns.head) {
 267                         conns.tail = NULL;
 268                 }
 269
 270                 pthread_mutex_unlock (&conns_mutex);
 271
 272                 /* make the socket available to the global
 273                  * thread and connection management */
 274                 this->socket = connection->socket;
 275
 276                 log_debug ("collect: handling connection on fd #%i",
 277                                 fileno (this->socket));
 278
 279                 while (42) {
 280                         /* 256 bytes ought to be enough for anybody ;-) */
 281                         char line[256 + 1]; /* line + '\0' */
 282                         int  len = 0;
 283
 284                         errno = 0;
 285                         if (NULL == fgets (line, sizeof (line), this->socket)) {
 286                                 if (0 != errno) {
 287                                         char errbuf[1024];
 288                                         log_err ("collect: reading from socket (fd #%i) "
 289                                                         "failed: %s", fileno (this->socket),
 290                                                         sstrerror (errno, errbuf, sizeof (errbuf)));
 291                                 }
 292                                 break;
 293                         }
 294
 295                         len = strlen (line);
 296                         if (('\n' != line[len - 1]) && ('\r' != line[len - 1])) {
 297                                 log_warn ("collect: line too long (> %zu characters): "
 298                                                 "'%s' (truncated)", sizeof (line) - 1, line);
 299
 300                                 while (NULL != fgets (line, sizeof (line), this->socket))
 301                                         if (('\n' == line[len - 1]) || ('\r' == line[len - 1]))
 302                                                 break;
 303                                 continue;
 304                         }
 305                         if (len < 3) { /* [a-z] ':' '\n' */
 306                                 continue;
 307                         }
 308
 309                         line[len - 1] = 0;
 310
 311                         log_debug ("collect: line = '%s'", line);
 312
 313                         if (':' != line[1]) {
 314                                 log_err ("collect: syntax error in line '%s'", line);
 315                                 continue;
 316                         }
 317
 318                         if ('e' == line[0]) { /* e:<type>:<bytes> */
 319                                 char *ptr  = NULL;
 320                                 char *type = strtok_r (line + 2, ":", &ptr);
 321                                 char *tmp  = strtok_r (NULL, ":", &ptr);
 322                                 int  bytes = 0;
 323
 324                                 if (NULL == tmp) {
 325                                         log_err ("collect: syntax error in line '%s'", line);
 326                                         continue;
 327                                 }
 328
 329                                 bytes = atoi (tmp);
 330
 331                                 pthread_mutex_lock (&count_mutex);
 332                                 type_list_incr (&list_count, type, /* increment = */ 1);
 333                                 pthread_mutex_unlock (&count_mutex);
 334
 335                                 if (bytes > 0) {
 336                                         pthread_mutex_lock (&size_mutex);
 337                                         type_list_incr (&list_size, type, /* increment = */ bytes);
 338                                         pthread_mutex_unlock (&size_mutex);
 339                                 }
 340                         }
 341                         else if ('s' == line[0]) { /* s:<value> */
 342                                 pthread_mutex_lock (&score_mutex);
 343                                 score = (score * (double)score_count + atof (line + 2))
 344                                                 / (double)(score_count + 1);
 345                                 ++score_count;
 346                                 pthread_mutex_unlock (&score_mutex);
 347                         }
 348                         else if ('c' == line[0]) { /* c:<type1>[,<type2>,...] */
 349                                 char *dummy = line + 2;
 350                                 char *endptr = NULL;
 351                                 char *type;
 352
 353                                 pthread_mutex_lock (&check_mutex);
 354                                 while ((type = strtok_r (dummy, ",", &endptr)) != NULL)
 355                                 {
 356                                         dummy = NULL;
 357                                         type_list_incr (&list_check, type, /* increment = */ 1);
 358                                 }
 359                                 pthread_mutex_unlock (&check_mutex);
 360                         }
 361                         else {
 362                                 log_err ("collect: unknown type '%c'", line[0]);
 363                         }
 364                 } /* while (42) */
 365
 366                 log_debug ("Shutting down connection on fd #%i",
 367                                 fileno (this->socket));
 368
 369                 fclose (connection->socket);
 370                 free (connection);
 371
 372                 this->socket = NULL;
 373
 374                 pthread_mutex_lock (&available_mutex);
 375                 ++available_collectors;
 376                 pthread_mutex_unlock (&available_mutex);
 377
 378                 pthread_cond_signal (&collector_available);
 379         } /* while (1) */
 380
 381         pthread_exit ((void *)0);
 382         return ((void *) 0);
 383 } /* static void *collect (void *) */
 384
 385 static void *open_connection (void __attribute__((unused)) *arg)
 386 {
 387         struct sockaddr_un addr;
 388
 389         const char *path  = (NULL == sock_file) ? SOCK_PATH : sock_file;
 390         const char *group = (NULL == sock_group) ? COLLECTD_GRP_NAME : sock_group;
 391
 392         /* create UNIX socket */
 393         errno = 0;
 394         if (-1 == (connector_socket = socket (PF_UNIX, SOCK_STREAM, 0))) {
 395                 char errbuf[1024];
 396                 disabled = 1;
 397                 log_err ("socket() failed: %s",
 398                                 sstrerror (errno, errbuf, sizeof (errbuf)));
 399                 pthread_exit ((void *)1);
 400         }
 401
 402         addr.sun_family = AF_UNIX;
 403         sstrncpy (addr.sun_path, path, (size_t)(UNIX_PATH_MAX - 1));
 404
 405         errno = 0;
 406         if (-1 == bind (connector_socket, (struct sockaddr *)&addr,
 407                                 offsetof (struct sockaddr_un, sun_path)
 408                                         + strlen(addr.sun_path))) {
 409                 char errbuf[1024];
 410                 disabled = 1;
 411                 close (connector_socket);
 412                 connector_socket = -1;
 413                 log_err ("bind() failed: %s",
 414                                 sstrerror (errno, errbuf, sizeof (errbuf)));
 415                 pthread_exit ((void *)1);
 416         }
 417
 418         errno = 0;
 419         if (-1 == listen (connector_socket, 5)) {
 420                 char errbuf[1024];
 421                 disabled = 1;
 422                 close (connector_socket);
 423                 connector_socket = -1;
 424                 log_err ("listen() failed: %s",
 425                                 sstrerror (errno, errbuf, sizeof (errbuf)));
 426                 pthread_exit ((void *)1);
 427         }
 428
 429         {
 430                 struct group sg;
 431                 struct group *grp;
 432                 char grbuf[2048];
 433                 int status;
 434
 435                 grp = NULL;
 436                 status = getgrnam_r (group, &sg, grbuf, sizeof (grbuf), &grp);
 437                 if (status != 0)
 438                 {
 439                         char errbuf[1024];
 440                         log_warn ("getgrnam_r (%s) failed: %s", group,
 441                                         sstrerror (errno, errbuf, sizeof (errbuf)));
 442                 }
 443                 else if (grp == NULL)
 444                 {
 445                         log_warn ("No such group: `%s'", group);
 446                 }
 447                 else
 448                 {
 449                         status = chown (path, (uid_t) -1, grp->gr_gid);
 450                         if (status != 0)
 451                         {
 452                                 char errbuf[1024];
 453                                 log_warn ("chown (%s, -1, %i) failed: %s",
 454                                                 path, (int) grp->gr_gid,
 455                                                 sstrerror (errno, errbuf, sizeof (errbuf)));
 456                         }
 457                 }
 458         }
 459
 460         errno = 0;
 461         if (0 != chmod (path, sock_perms)) {
 462                 char errbuf[1024];
 463                 log_warn ("chmod() failed: %s",
 464                                 sstrerror (errno, errbuf, sizeof (errbuf)));
 465         }
 466
 467         { /* initialize collector threads */
 468                 pthread_attr_t ptattr;
 469
 470                 conns.head = NULL;
 471                 conns.tail = NULL;
 472
 473                 pthread_attr_init (&ptattr);
 474                 pthread_attr_setdetachstate (&ptattr, PTHREAD_CREATE_DETACHED);
 475
 476                 available_collectors = max_conns;
 477
 478                 collectors =
 479                         smalloc (max_conns * sizeof (*collectors));
 480
 481                 for (int i = 0; i < max_conns; ++i) {
 482                         collectors[i] = smalloc (sizeof (*collectors[i]));
 483                         collectors[i]->socket = NULL;
 484
 485                         if (plugin_thread_create (&collectors[i]->thread,
 486                                                         &ptattr, collect, collectors[i]) != 0) {
 487                                 char errbuf[1024];
 488                                 log_err ("plugin_thread_create() failed: %s",
 489                                                 sstrerror (errno, errbuf, sizeof (errbuf)));
 490                                 collectors[i]->thread = (pthread_t) 0;
 491                         }
 492                 }
 493
 494                 pthread_attr_destroy (&ptattr);
 495         }
 496
 497         while (1) {
 498                 int remote = 0;
 499
 500                 conn_t *connection;
 501
 502                 pthread_mutex_lock (&available_mutex);
 503
 504                 while (0 == available_collectors) {
 505                         pthread_cond_wait (&collector_available, &available_mutex);
 506                 }
 507
 508                 --available_collectors;
 509
 510                 pthread_mutex_unlock (&available_mutex);
 511
 512                 while (42) {
 513                         errno = 0;
 514
 515                         remote = accept (connector_socket, NULL, NULL);
 516                         if (remote == -1) {
 517                                 char errbuf[1024];
 518
 519                                 if (errno == EINTR)
 520                                         continue;
 521
 522                                 disabled = 1;
 523                                 close (connector_socket);
 524                                 connector_socket = -1;
 525                                 log_err ("accept() failed: %s",
 526                                                  sstrerror (errno, errbuf, sizeof (errbuf)));
 527                                 pthread_exit ((void *)1);
 528                         }
 529
 530                         /* access() succeeded. */
 531                         break;
 532                 }
 533
 534                 connection = calloc (1, sizeof (*connection));
 535                 if (connection == NULL)
 536                 {
 537                         close (remote);
 538                         continue;
 539                 }
 540
 541                 connection->socket = fdopen (remote, "r");
 542                 connection->next   = NULL;
 543
 544                 if (NULL == connection->socket) {
 545                         close (remote);
 546                         sfree (connection);
 547                         continue;
 548                 }
 549
 550                 pthread_mutex_lock (&conns_mutex);
 551
 552                 if (NULL == conns.head) {
 553                         conns.head = connection;
 554                         conns.tail = connection;
 555                 }
 556                 else {
 557                         conns.tail->next = connection;
 558                         conns.tail = conns.tail->next;
 559                 }
 560
 561                 pthread_mutex_unlock (&conns_mutex);
 562
 563                 pthread_cond_signal (&conn_available);
 564         }
 565
 566         pthread_exit ((void *) 0);
 567         return ((void *) 0);
 568 } /* static void *open_connection (void *) */
 569
 570 static int email_init (void)
 571 {
 572         if (plugin_thread_create (&connector, NULL,
 573                                 open_connection, NULL) != 0) {
 574                 char errbuf[1024];
 575                 disabled = 1;
 576                 log_err ("plugin_thread_create() failed: %s",
 577                                 sstrerror (errno, errbuf, sizeof (errbuf)));
 578                 return (-1);
 579         }
 580
 581         return (0);
 582 } /* int email_init */
 583
 584 static void type_list_free (type_list_t *t)
 585 {
 586         type_t *this;
 587
 588         this = t->head;
 589         while (this != NULL)
 590         {
 591                 type_t *next = this->next;
 592
 593                 sfree (this->name);
 594                 sfree (this);
 595
 596                 this = next;
 597         }
 598
 599         t->head = NULL;
 600         t->tail = NULL;
 601 }
 602
 603 static int email_shutdown (void)
 604 {
 605         if (connector != ((pthread_t) 0)) {
 606                 pthread_kill (connector, SIGTERM);
 607                 connector = (pthread_t) 0;
 608         }
 609
 610         if (connector_socket >= 0) {
 611                 close (connector_socket);
 612                 connector_socket = -1;
 613         }
 614
 615         /* don't allow any more connections to be processed */
 616         pthread_mutex_lock (&conns_mutex);
 617
 618         available_collectors = 0;
 619
 620         if (collectors != NULL) {
 621                 for (int i = 0; i < max_conns; ++i) {
 622                         if (collectors[i] == NULL)
 623                                 continue;
 624
 625                         if (collectors[i]->thread != ((pthread_t) 0)) {
 626                                 pthread_kill (collectors[i]->thread, SIGTERM);
 627                                 collectors[i]->thread = (pthread_t) 0;
 628                         }
 629
 630                         if (collectors[i]->socket != NULL) {
 631                                 fclose (collectors[i]->socket);
 632                                 collectors[i]->socket = NULL;
 633                         }
 634
 635                         sfree (collectors[i]);
 636                 }
 637                 sfree (collectors);
 638         } /* if (collectors != NULL) */
 639
 640         pthread_mutex_unlock (&conns_mutex);
 641
 642         type_list_free (&list_count);
 643         type_list_free (&list_count_copy);
 644         type_list_free (&list_size);
 645         type_list_free (&list_size_copy);
 646         type_list_free (&list_check);
 647         type_list_free (&list_check_copy);
 648
 649         unlink ((NULL == sock_file) ? SOCK_PATH : sock_file);
 650
 651         sfree (sock_file);
 652         sfree (sock_group);
 653         return (0);
 654 } /* static void email_shutdown (void) */
 655
 656 static void email_submit (const char *type, const char *type_instance, gauge_t value)
 657 {
 658         value_t values[1];
 659         value_list_t vl = VALUE_LIST_INIT;
 660
 661         values[0].gauge = value;
 662
 663         vl.values = values;
 664         vl.values_len = 1;
 665         sstrncpy (vl.host, hostname_g, sizeof (vl.host));
 666         sstrncpy (vl.plugin, "email", sizeof (vl.plugin));
 667         sstrncpy (vl.type, type, sizeof (vl.type));
 668         sstrncpy (vl.type_instance, type_instance, sizeof (vl.type_instance));
 669
 670         plugin_dispatch_values (&vl);
 671 } /* void email_submit */
 672
 673 /* Copy list l1 to list l2. l2 may partly exist already, but it is assumed
 674  * that neither the order nor the name of any element of either list is
 675  * changed and no elements are deleted. The values of l1 are reset to zero
 676  * after they have been copied to l2. */
 677 static void copy_type_list (type_list_t *l1, type_list_t *l2)
 678 {
 679         type_t *last = NULL;
 680
 681         for (type_t *ptr1 = l1->head, *ptr2 = l2->head; NULL != ptr1;
 682                         ptr1 = ptr1->next, last = ptr2, ptr2 = ptr2->next) {
 683                 if (NULL == ptr2) {
 684                         ptr2 = smalloc (sizeof (*ptr2));
 685                         ptr2->name = NULL;
 686                         ptr2->next = NULL;
 687
 688                         if (NULL == last) {
 689                                 l2->head = ptr2;
 690                         }
 691                         else {
 692                                 last->next = ptr2;
 693                         }
 694
 695                         l2->tail = ptr2;
 696                 }
 697
 698                 if (NULL == ptr2->name) {
 699                         ptr2->name = sstrdup (ptr1->name);
 700                 }
 701
 702                 ptr2->value = ptr1->value;
 703                 ptr1->value = 0;
 704         }
 705         return;
 706 }
 707
 708 static int email_read (void)
 709 {
 710         double score_old;
 711         int score_count_old;
 712
 713         if (disabled)
 714                 return (-1);
 715
 716         /* email count */
 717         pthread_mutex_lock (&count_mutex);
 718
 719         copy_type_list (&list_count, &list_count_copy);
 720
 721         pthread_mutex_unlock (&count_mutex);
 722
 723         for (type_t *ptr = list_count_copy.head; NULL != ptr; ptr = ptr->next) {
 724                 email_submit ("email_count", ptr->name, ptr->value);
 725         }
 726
 727         /* email size */
 728         pthread_mutex_lock (&size_mutex);
 729
 730         copy_type_list (&list_size, &list_size_copy);
 731
 732         pthread_mutex_unlock (&size_mutex);
 733
 734         for (type_t *ptr = list_size_copy.head; NULL != ptr; ptr = ptr->next) {
 735                 email_submit ("email_size", ptr->name, ptr->value);
 736         }
 737
 738         /* spam score */
 739         pthread_mutex_lock (&score_mutex);
 740
 741         score_old = score;
 742         score_count_old = score_count;
 743         score = 0.0;
 744         score_count = 0;
 745
 746         pthread_mutex_unlock (&score_mutex);
 747
 748         if (score_count_old > 0)
 749                 email_submit ("spam_score", "", score_old);
 750
 751         /* spam checks */
 752         pthread_mutex_lock (&check_mutex);
 753
 754         copy_type_list (&list_check, &list_check_copy);
 755
 756         pthread_mutex_unlock (&check_mutex);
 757
 758         for (type_t *ptr = list_check_copy.head; NULL != ptr; ptr = ptr->next)
 759                 email_submit ("spam_check", ptr->name, ptr->value);
 760
 761         return (0);
 762 } /* int email_read */
 763
 764 void module_register (void)
 765 {
 766         plugin_register_config ("email", email_config, config_keys, config_keys_num);
 767         plugin_register_init ("email", email_init);
 768         plugin_register_read ("email", email_read);
 769         plugin_register_shutdown ("email", email_shutdown);
 770 } /* void module_register */
 771
 772 /* vim: set sw=4 ts=4 tw=78 noexpandtab : */