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