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 #include "common.h"
  43 #include "plugin.h"
  44
  45 #include "configfile.h"
  46
  47 #include <stddef.h>
  48
  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 = smalloc (sizeof (*list->head));
 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 = smalloc (sizeof (*list->tail->next));
 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                         if (len < 3) { /* [a-z] ':' '\n' */
 305                                 continue;
 306                         }
 307
 308                         line[len - 1] = 0;
 309
 310                         log_debug ("collect: line = '%s'", line);
 311
 312                         if (':' != line[1]) {
 313                                 log_err ("collect: syntax error in line '%s'", line);
 314                                 continue;
 315                         }
 316
 317                         if ('e' == line[0]) { /* e:<type>:<bytes> */
 318                                 char *ptr  = NULL;
 319                                 char *type = strtok_r (line + 2, ":", &ptr);
 320                                 char *tmp  = strtok_r (NULL, ":", &ptr);
 321                                 int  bytes = 0;
 322
 323                                 if (NULL == tmp) {
 324                                         log_err ("collect: syntax error in line '%s'", line);
 325                                         continue;
 326                                 }
 327
 328                                 bytes = atoi (tmp);
 329
 330                                 pthread_mutex_lock (&count_mutex);
 331                                 type_list_incr (&list_count, type, /* increment = */ 1);
 332                                 pthread_mutex_unlock (&count_mutex);
 333
 334                                 if (bytes > 0) {
 335                                         pthread_mutex_lock (&size_mutex);
 336                                         type_list_incr (&list_size, type, /* increment = */ bytes);
 337                                         pthread_mutex_unlock (&size_mutex);
 338                                 }
 339                         }
 340                         else if ('s' == line[0]) { /* s:<value> */
 341                                 pthread_mutex_lock (&score_mutex);
 342                                 score = (score * (double)score_count + atof (line + 2))
 343                                                 / (double)(score_count + 1);
 344                                 ++score_count;
 345                                 pthread_mutex_unlock (&score_mutex);
 346                         }
 347                         else if ('c' == line[0]) { /* c:<type1>[,<type2>,...] */
 348                                 char *dummy = line + 2;
 349                                 char *endptr = NULL;
 350                                 char *type;
 351
 352                                 pthread_mutex_lock (&check_mutex);
 353                                 while ((type = strtok_r (dummy, ",", &endptr)) != NULL)
 354                                 {
 355                                         dummy = NULL;
 356                                         type_list_incr (&list_check, type, /* increment = */ 1);
 357                                 }
 358                                 pthread_mutex_unlock (&check_mutex);
 359                         }
 360                         else {
 361                                 log_err ("collect: unknown type '%c'", line[0]);
 362                         }
 363                 } /* while (42) */
 364
 365                 log_debug ("Shutting down connection on fd #%i",
 366                                 fileno (this->socket));
 367
 368                 fclose (connection->socket);
 369                 free (connection);
 370
 371                 this->socket = NULL;
 372
 373                 pthread_mutex_lock (&available_mutex);
 374                 ++available_collectors;
 375                 pthread_mutex_unlock (&available_mutex);
 376
 377                 pthread_cond_signal (&collector_available);
 378         } /* while (1) */
 379
 380         pthread_exit ((void *)0);
 381         return ((void *) 0);
 382 } /* static void *collect (void *) */
 383
 384 static void *open_connection (void __attribute__((unused)) *arg)
 385 {
 386         struct sockaddr_un addr;
 387
 388         const char *path  = (NULL == sock_file) ? SOCK_PATH : sock_file;
 389         const char *group = (NULL == sock_group) ? COLLECTD_GRP_NAME : sock_group;
 390
 391         /* create UNIX socket */
 392         errno = 0;
 393         if (-1 == (connector_socket = socket (PF_UNIX, SOCK_STREAM, 0))) {
 394                 char errbuf[1024];
 395                 disabled = 1;
 396                 log_err ("socket() failed: %s",
 397                                 sstrerror (errno, errbuf, sizeof (errbuf)));
 398                 pthread_exit ((void *)1);
 399         }
 400
 401         addr.sun_family = AF_UNIX;
 402         sstrncpy (addr.sun_path, path, (size_t)(UNIX_PATH_MAX - 1));
 403
 404         errno = 0;
 405         if (-1 == bind (connector_socket, (struct sockaddr *)&addr,
 406                                 offsetof (struct sockaddr_un, sun_path)
 407                                         + strlen(addr.sun_path))) {
 408                 char errbuf[1024];
 409                 disabled = 1;
 410                 close (connector_socket);
 411                 connector_socket = -1;
 412                 log_err ("bind() failed: %s",
 413                                 sstrerror (errno, errbuf, sizeof (errbuf)));
 414                 pthread_exit ((void *)1);
 415         }
 416
 417         errno = 0;
 418         if (-1 == listen (connector_socket, 5)) {
 419                 char errbuf[1024];
 420                 disabled = 1;
 421                 close (connector_socket);
 422                 connector_socket = -1;
 423                 log_err ("listen() failed: %s",
 424                                 sstrerror (errno, errbuf, sizeof (errbuf)));
 425                 pthread_exit ((void *)1);
 426         }
 427
 428         {
 429                 struct group sg;
 430                 struct group *grp;
 431                 char grbuf[2048];
 432                 int status;
 433
 434                 grp = NULL;
 435                 status = getgrnam_r (group, &sg, grbuf, sizeof (grbuf), &grp);
 436                 if (status != 0)
 437                 {
 438                         char errbuf[1024];
 439                         log_warn ("getgrnam_r (%s) failed: %s", group,
 440                                         sstrerror (errno, errbuf, sizeof (errbuf)));
 441                 }
 442                 else if (grp == NULL)
 443                 {
 444                         log_warn ("No such group: `%s'", group);
 445                 }
 446                 else
 447                 {
 448                         status = chown (path, (uid_t) -1, grp->gr_gid);
 449                         if (status != 0)
 450                         {
 451                                 char errbuf[1024];
 452                                 log_warn ("chown (%s, -1, %i) failed: %s",
 453                                                 path, (int) grp->gr_gid,
 454                                                 sstrerror (errno, errbuf, sizeof (errbuf)));
 455                         }
 456                 }
 457         }
 458
 459         errno = 0;
 460         if (0 != chmod (path, sock_perms)) {
 461                 char errbuf[1024];
 462                 log_warn ("chmod() failed: %s",
 463                                 sstrerror (errno, errbuf, sizeof (errbuf)));
 464         }
 465
 466         { /* initialize collector threads */
 467                 int i   = 0;
 468                 int err = 0;
 469
 470                 pthread_attr_t ptattr;
 471
 472                 conns.head = NULL;
 473                 conns.tail = NULL;
 474
 475                 pthread_attr_init (&ptattr);
 476                 pthread_attr_setdetachstate (&ptattr, PTHREAD_CREATE_DETACHED);
 477
 478                 available_collectors = max_conns;
 479
 480                 collectors =
 481                         smalloc (max_conns * sizeof (*collectors));
 482
 483                 for (i = 0; i < max_conns; ++i) {
 484                         collectors[i] = smalloc (sizeof (*collectors[i]));
 485                         collectors[i]->socket = NULL;
 486
 487                         if (0 != (err = plugin_thread_create (&collectors[i]->thread,
 488                                                         &ptattr, collect, collectors[i]))) {
 489                                 char errbuf[1024];
 490                                 log_err ("pthread_create() failed: %s",
 491                                                 sstrerror (errno, errbuf, sizeof (errbuf)));
 492                                 collectors[i]->thread = (pthread_t) 0;
 493                         }
 494                 }
 495
 496                 pthread_attr_destroy (&ptattr);
 497         }
 498
 499         while (1) {
 500                 int remote = 0;
 501
 502                 conn_t *connection;
 503
 504                 pthread_mutex_lock (&available_mutex);
 505
 506                 while (0 == available_collectors) {
 507                         pthread_cond_wait (&collector_available, &available_mutex);
 508                 }
 509
 510                 --available_collectors;
 511
 512                 pthread_mutex_unlock (&available_mutex);
 513
 514                 while (42) {
 515                         errno = 0;
 516
 517                         remote = accept (connector_socket, NULL, NULL);
 518                         if (remote == -1) {
 519                                 char errbuf[1024];
 520
 521                                 if (errno == EINTR)
 522                                         continue;
 523
 524                                 disabled = 1;
 525                                 close (connector_socket);
 526                                 connector_socket = -1;
 527                                 log_err ("accept() failed: %s",
 528                                                  sstrerror (errno, errbuf, sizeof (errbuf)));
 529                                 pthread_exit ((void *)1);
 530                         }
 531
 532                         /* access() succeeded. */
 533                         break;
 534                 }
 535
 536                 connection = calloc (1, sizeof (*connection));
 537                 if (connection == NULL)
 538                 {
 539                         close (remote);
 540                         continue;
 541                 }
 542
 543                 connection->socket = fdopen (remote, "r");
 544                 connection->next   = NULL;
 545
 546                 if (NULL == connection->socket) {
 547                         close (remote);
 548                         sfree (connection);
 549                         continue;
 550                 }
 551
 552                 pthread_mutex_lock (&conns_mutex);
 553
 554                 if (NULL == conns.head) {
 555                         conns.head = connection;
 556                         conns.tail = connection;
 557                 }
 558                 else {
 559                         conns.tail->next = connection;
 560                         conns.tail = conns.tail->next;
 561                 }
 562
 563                 pthread_mutex_unlock (&conns_mutex);
 564
 565                 pthread_cond_signal (&conn_available);
 566         }
 567
 568         pthread_exit ((void *) 0);
 569         return ((void *) 0);
 570 } /* static void *open_connection (void *) */
 571
 572 static int email_init (void)
 573 {
 574         int err = 0;
 575
 576         if (0 != (err = plugin_thread_create (&connector, NULL,
 577                                 open_connection, NULL))) {
 578                 char errbuf[1024];
 579                 disabled = 1;
 580                 log_err ("pthread_create() failed: %s",
 581                                 sstrerror (errno, errbuf, sizeof (errbuf)));
 582                 return (-1);
 583         }
 584
 585         return (0);
 586 } /* int email_init */
 587
 588 static void type_list_free (type_list_t *t)
 589 {
 590         type_t *this;
 591
 592         this = t->head;
 593         while (this != NULL)
 594         {
 595                 type_t *next = this->next;
 596
 597                 sfree (this->name);
 598                 sfree (this);
 599
 600                 this = next;
 601         }
 602
 603         t->head = NULL;
 604         t->tail = NULL;
 605 }
 606
 607 static int email_shutdown (void)
 608 {
 609         int i = 0;
 610
 611         if (connector != ((pthread_t) 0)) {
 612                 pthread_kill (connector, SIGTERM);
 613                 connector = (pthread_t) 0;
 614         }
 615
 616         if (connector_socket >= 0) {
 617                 close (connector_socket);
 618                 connector_socket = -1;
 619         }
 620
 621         /* don't allow any more connections to be processed */
 622         pthread_mutex_lock (&conns_mutex);
 623
 624         available_collectors = 0;
 625
 626         if (collectors != NULL) {
 627                 for (i = 0; i < max_conns; ++i) {
 628                         if (collectors[i] == NULL)
 629                                 continue;
 630
 631                         if (collectors[i]->thread != ((pthread_t) 0)) {
 632                                 pthread_kill (collectors[i]->thread, SIGTERM);
 633                                 collectors[i]->thread = (pthread_t) 0;
 634                         }
 635
 636                         if (collectors[i]->socket != NULL) {
 637                                 fclose (collectors[i]->socket);
 638                                 collectors[i]->socket = NULL;
 639                         }
 640
 641                         sfree (collectors[i]);
 642                 }
 643                 sfree (collectors);
 644         } /* if (collectors != NULL) */
 645
 646         pthread_mutex_unlock (&conns_mutex);
 647
 648         type_list_free (&list_count);
 649         type_list_free (&list_count_copy);
 650         type_list_free (&list_size);
 651         type_list_free (&list_size_copy);
 652         type_list_free (&list_check);
 653         type_list_free (&list_check_copy);
 654
 655         unlink ((NULL == sock_file) ? SOCK_PATH : sock_file);
 656
 657         sfree (sock_file);
 658         sfree (sock_group);
 659         return (0);
 660 } /* static void email_shutdown (void) */
 661
 662 static void email_submit (const char *type, const char *type_instance, gauge_t value)
 663 {
 664         value_t values[1];
 665         value_list_t vl = VALUE_LIST_INIT;
 666
 667         values[0].gauge = value;
 668
 669         vl.values = values;
 670         vl.values_len = 1;
 671         sstrncpy (vl.host, hostname_g, sizeof (vl.host));
 672         sstrncpy (vl.plugin, "email", sizeof (vl.plugin));
 673         sstrncpy (vl.type, type, sizeof (vl.type));
 674         sstrncpy (vl.type_instance, type_instance, sizeof (vl.type_instance));
 675
 676         plugin_dispatch_values (&vl);
 677 } /* void email_submit */
 678
 679 /* Copy list l1 to list l2. l2 may partly exist already, but it is assumed
 680  * that neither the order nor the name of any element of either list is
 681  * changed and no elements are deleted. The values of l1 are reset to zero
 682  * after they have been copied to l2. */
 683 static void copy_type_list (type_list_t *l1, type_list_t *l2)
 684 {
 685         type_t *ptr1;
 686         type_t *ptr2;
 687
 688         type_t *last = NULL;
 689
 690         for (ptr1 = l1->head, ptr2 = l2->head; NULL != ptr1;
 691                         ptr1 = ptr1->next, last = ptr2, ptr2 = ptr2->next) {
 692                 if (NULL == ptr2) {
 693                         ptr2 = smalloc (sizeof (*ptr2));
 694                         ptr2->name = NULL;
 695                         ptr2->next = NULL;
 696
 697                         if (NULL == last) {
 698                                 l2->head = ptr2;
 699                         }
 700                         else {
 701                                 last->next = ptr2;
 702                         }
 703
 704                         l2->tail = ptr2;
 705                 }
 706
 707                 if (NULL == ptr2->name) {
 708                         ptr2->name = sstrdup (ptr1->name);
 709                 }
 710
 711                 ptr2->value = ptr1->value;
 712                 ptr1->value = 0;
 713         }
 714         return;
 715 }
 716
 717 static int email_read (void)
 718 {
 719         type_t *ptr;
 720
 721         double score_old;
 722         int score_count_old;
 723
 724         if (disabled)
 725                 return (-1);
 726
 727         /* email count */
 728         pthread_mutex_lock (&count_mutex);
 729
 730         copy_type_list (&list_count, &list_count_copy);
 731
 732         pthread_mutex_unlock (&count_mutex);
 733
 734         for (ptr = list_count_copy.head; NULL != ptr; ptr = ptr->next) {
 735                 email_submit ("email_count", ptr->name, ptr->value);
 736         }
 737
 738         /* email size */
 739         pthread_mutex_lock (&size_mutex);
 740
 741         copy_type_list (&list_size, &list_size_copy);
 742
 743         pthread_mutex_unlock (&size_mutex);
 744
 745         for (ptr = list_size_copy.head; NULL != ptr; ptr = ptr->next) {
 746                 email_submit ("email_size", ptr->name, ptr->value);
 747         }
 748
 749         /* spam score */
 750         pthread_mutex_lock (&score_mutex);
 751
 752         score_old = score;
 753         score_count_old = score_count;
 754         score = 0.0;
 755         score_count = 0;
 756
 757         pthread_mutex_unlock (&score_mutex);
 758
 759         if (score_count_old > 0)
 760                 email_submit ("spam_score", "", score_old);
 761
 762         /* spam checks */
 763         pthread_mutex_lock (&check_mutex);
 764
 765         copy_type_list (&list_check, &list_check_copy);
 766
 767         pthread_mutex_unlock (&check_mutex);
 768
 769         for (ptr = list_check_copy.head; NULL != ptr; ptr = ptr->next)
 770                 email_submit ("spam_check", ptr->name, ptr->value);
 771
 772         return (0);
 773 } /* int email_read */
 774
 775 void module_register (void)
 776 {
 777         plugin_register_config ("email", email_config, config_keys, config_keys_num);
 778         plugin_register_init ("email", email_init);
 779         plugin_register_read ("email", email_read);
 780         plugin_register_shutdown ("email", email_shutdown);
 781 } /* void module_register */
 782
 783 /* vim: set sw=4 ts=4 tw=78 noexpandtab : */