mta_sendmail.c

包含一下内容: * An extensible agent * An SNMP library * tools to request or set information from SNMP a

      {
        /* do nothing */
      }
      sendmailst_fh = -1;
    }
  }
}

/**/

/** static BOOL read_sendmailcf(BOOL config)
 *
 *  Description:
 *
 *    Tries to open the file named in sendmailcf_fn and to get the names of
 *    the mailers, the status file and the mailqueue directory.
 *
 *  Parameters:
 *
 *    config: TRUE if function has been called during the configuration process
 *
 *  Returns:
 *
 *    TRUE  : config file has been successfully opened
 *
 *    FALSE : could not open config file
 *
 */

static BOOL read_sendmailcf(BOOL config)
{
  FILE *sendmailcf_fp;
  char line[500];
  char *filename;
  int  linenr;
  int  linelen;
  int  found_sendmailst = FALSE;
  int  found_mqueue     = FALSE;
  int  i;


  sendmailcf_fp = fopen(sendmailcf_fn, "r");
  if (sendmailcf_fp == NULL)
  {
    print_error(LOG_ERR, config, TRUE, "mibII/mta_sendmail.c:read_sendmailcf", "could not open file \"%s\"\n", sendmailcf_fn);
    return FALSE;
  }

  /* initializes the standard mailers, which aren't necessarily mentioned in the sendmail.cf file */
  strcpy(mailernames[0],"prog");
  strcpy(mailernames[1],"*file*");
  strcpy(mailernames[2],"*include*");
  mailers=3;

  linenr = 1;
  while (fgets(line, sizeof line, sendmailcf_fp) != NULL)
  {
    linelen = strlen(line);

    if (line[linelen - 1] != '\n')
    {
      print_error(LOG_WARNING, config, FALSE, "mibII/mta_sendmail.c:read_sendmailcf", "line %d in config file \"%s\" is too long\n", linenr, sendmailcf_fn);
      while (fgets(line, sizeof line, sendmailcf_fp) != NULL && line[strlen(line) - 1] != '\n') /* skip rest of the line */
      {
        /* nothing to do */
      }
      linenr++;
      continue;
    }

    line[--linelen] = '\0';

    switch (line[0])
    {

      case 'M':

        if (mailers < MAXMAILERS)
        {
          for (i=1; line[i] != ',' && ! isspace(line[i]) && line[i] != '\0' && i <= MNAMELEN; i++)
          {
            mailernames[mailers][i-1] = line[i];
          }
          mailernames[mailers][i-1] = '\0';

          DEBUGMSGTL(("mibII/mta_sendmail.c:read_sendmailcf","found mailer \"%s\"\n",mailernames[mailers]));

          for (i=0; i < mailers && strcmp(mailernames[mailers], mailernames[i]) != 0; i++)
          {
            /* nothing to do */
          }

          if (i == mailers)
          {
            mailers++;
          } else {
            if (i < 3)
            {
              DEBUGMSGTL(("mibII/mta_sendmail.c:read_sendmailcf","mailer \"%s\" already existed, but since it's one of the predefined mailers, that's probably nothing to worry about\n", mailernames[mailers]));
            } else {
              DEBUGMSGTL(("mibII/mta_sendmail.c:read_sendmailcf","mailer \"%s\" already existed\n",mailernames[mailers]));
            }
            mailernames[mailers][0]='\0';
          }
        } else {
          print_error(LOG_WARNING, config, FALSE, "mibII/mta_sendmail.c:read_sendmailcf", "found too many mailers in config file \"%s\"\n", sendmailcf_fn);
        }


       break;

      case 'O':

        switch (line[1])
        {

          case ' ':

            if (strncasecmp(line + 2, "StatusFile", 10) == 0)
            {
              filename = line + 12;
            }
            else if (strncasecmp(line + 2, "QueueDirectory", 14) == 0)
            {
              filename = line + 16;
            }
            else
            {
              break;
            }

            if (*filename != ' ' && *filename != '=')
            {
              break;
            }

            while (*filename == ' ')
            {
              filename++;
            }

            if (*filename != '=')
            {
              print_error(LOG_WARNING, config, FALSE, "mibII/mta_sendmail.c:read_sendmailcf", "line %d in config file \"%s\" ist missing an '='\n", linenr, sendmailcf_fn);
              break;
            }

            filename++;
            while (*filename == ' ')
            {
              filename++;
            }

            if (strlen(filename) > FILENAMELEN)
            {
              print_error(LOG_WARNING, config, FALSE, "mibII/mta_sendmail.c:read_sendmailcf", "line %d config file \"%s\" contains a filename that's too long\n", linenr, sendmailcf_fn);
              break;
            }

            if (strncasecmp(line + 2, "StatusFile", 10) == 0)
            {

              strcpy(sendmailst_fn, filename);
              found_sendmailst = TRUE;
              DEBUGMSGTL(("mibII/mta_sendmail.c:read_sendmailcf","found statatistics file \"%s\"\n", sendmailst_fn));
            }
            else if (strncasecmp(line + 2, "QueueDirectory", 14) == 0)
            {
              strcpy(mqueue_dn, filename);
              found_mqueue = TRUE;
              DEBUGMSGTL(("mibII/mta_sendmail.c:read_sendmailcf","found mailqueue directory \"%s\"\n", mqueue_dn));
            } else {
              print_error(LOG_CRIT, config, FALSE, "mibII/mta_sendmail.c:read_sendmailcf", "This shouldn't happen.\n");
            }

           break;

          case 'S':

            if (strlen(line+2) > FILENAMELEN)
            {
              print_error(LOG_WARNING, config, FALSE, "mibII/mta_sendmail.c:read_sendmailcf", "line %d config file \"%s\" contains a filename that's too long\n", linenr, sendmailcf_fn);
              break;
            }
            strcpy(sendmailst_fn, line+2);
            found_sendmailst = TRUE;
            DEBUGMSGTL(("mibII/mta_sendmail.c:read_sendmailcf","found statatistics file \"%s\"\n", sendmailst_fn));
           break;

          case 'Q':

            if (strlen(line+2) > FILENAMELEN)
            {
              print_error(LOG_WARNING, config, FALSE, "mibII/mta_sendmail.c:read_sendmailcf", "line %d config file \"%s\" contains a filename that's too long\n", linenr, sendmailcf_fn);
              break;
            }
            strcpy(mqueue_dn, line+2);
            found_mqueue = TRUE;
            DEBUGMSGTL(("mibII/mta_sendmail.c:read_sendmailcf","found mailqueue directory \"%s\"\n", mqueue_dn));
           break;
        }

      break;
    }

    linenr++;
  }

  for (i = 0; i < 10 && fclose(sendmailcf_fp) != 0; i++)
  {
    /* nothing to do */
  }

  for (i = mailers; i < MAXMAILERS; i++)
  {
    mailernames[i][0] = '\0';
  }

  if (found_sendmailst)
  {
    open_sendmailst(config);
  }

  if (found_mqueue)
  {
    if (mqueue_dp)
    {
      while (closedir(mqueue_dp) == -1 && errno == EINTR)
      {
        /* do nothing */
      }

    }
    mqueue_dp = opendir(mqueue_dn);
    if (mqueue_dp == NULL)
    {
      print_error(LOG_ERR, config, FALSE, "mibII/mta_sendmail.c:read_sendmailcf", "could not open mailqueue directory \"%s\" mentioned in config file \"%s\"\n", mqueue_dn, sendmailcf_fn);
    }
  }

  return TRUE;
}
/**/

/** static void mta_sendmail_parse_config(const char* token, char *line)
 *
 *  Description:
 *
 *    Called by the agent for each configuration line that belongs to this module.
 *    The possible tokens are:
 *
 *    sendmail_config  - filename of the sendmail configutarion file
 *    sendmail_stats   - filename of the sendmail statistics file
 *    sendmail_queue   - name of the sendmail mailqueue directory
 *    sendmail_index   - the ApplIndex to use for the table
 *    sendmail_stats_t - the time (in seconds) to cache statistics
 *    sendmail_queue_t - the time (in seconds) to cache the directory scanning results
 *
 *    For "sendmail_config", "sendmail_stats" and "sendmail_queue", the copy_word
 *    function is used to copy the filename.
 *
 *  Parameters:
 *
 *    token: first word of the line
 *
 *    line:  rest of the line
 *
 *  Returns:
 *
 *    nothing
 *
 */

static void mta_sendmail_parse_config(const char *token, char *line)
{
  if (strlen(line) > FILENAMELEN) /* Might give some false alarm, but better to be safe than sorry */
  {
    config_perror("line too long");
    return;
  }

  if (strcasecmp(token,"sendmail_stats") == 0)
  {
    while (isspace(*line))
    {
      line++;
    }
    copy_word(line, sendmailst_fn);

    open_sendmailst(TRUE);

    if (sendmailst_fh == -1)
    {
      char str[FILENAMELEN+50];
      sprintf (str, "couldn't open file \"%s\"", sendmailst_fn);
      config_perror(str);
      return;
    }

    DEBUGMSGTL(("mibII/mta_sendmail.c:mta_sendmail_parse_config", "opened statistics file \"%s\"\n", sendmailst_fn));
    return;
  }
  else if (strcasecmp(token,"sendmail_config") == 0)
  {
    while (isspace(*line))
    {
      line++;
    }
    copy_word(line, sendmailcf_fn);

    read_sendmailcf(TRUE);

    DEBUGMSGTL(("mibII/mta_sendmail.c:mta_sendmail_parse_config", "read config file \"%s\"\n", sendmailcf_fn));
    return;
  }
  else if (strcasecmp(token,"sendmail_queue") == 0)
  {
    while (isspace(*line))
    {
      line++;
    }
    copy_word(line, mqueue_dn);

    if (mqueue_dp != NULL)
    {
      while (closedir(mqueue_dp) == -1 && errno == EINTR)
      {
        /* do nothing */
      }
    }

    mqueue_dp = opendir(mqueue_dn);

    if (mqueue_dp == NULL)
    {
      char str[FILENAMELEN+50];
      sprintf (str, "could not open mailqueue directory \"%s\"", mqueue_dn);
      config_perror(str);
      return;
    }

    DEBUGMSGTL(("mibII/mta_sendmail.c:mta_sendmail_parse_config", "opened mailqueue directory \"%s\"\n", mqueue_dn));
    return;
  }
  else if (strcasecmp(token,"sendmail_index") == 0)
  {
    while (isspace(*line))
    {
      line++;
    }
    applindex = atol(line);
    if (applindex < 1)
    {
      config_perror("invalid index number");
      applindex = 1;
    }
  }
  else if (strcasecmp(token,"sendmail_stats_t") == 0)
  {
    while (isspace(*line))
    {
      line++;
    }
    stat_cache_time = atol(line);
    if (stat_cache_time < 1)
    {
      config_perror("invalid cache time");
      applindex = 5;
    }
  }
  else if (strcasecmp(token,"sendmail_queue_t") == 0)
  {
    while (isspace(*line))
    {
      line++;
    }
    dir_cache_time = atol(line);
    if (dir_cache_time < 1)
    {
      config_perror("invalid cache time");
      applindex = 10;
    }
  }
  else
  {
    config_perror("mibII/mta_sendmail.c says: What should I do with that token? Did you ./configure the agent properly?");
  }

  return;
}
/**/

/** void init_mta_sendmail(void)
 *
 *  Description:
 *
 *    Called by the agent to initialize the module. The function will register
 *    the OID tree and the config handler and try some default values for the
 *    sendmail.cf and sendmail.st files and for the mailqueue directory.
 *
 *  Parameters:
 *
 *    none
 *
 *  Returns: