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pop_cmd_list.c

/* $Id: //depot/Teapop/0.3/teapop/pop_cmd_list.c#4 $ */

/*
 * Copyright (c) 1999-2002 ToonTown Consulting
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the company nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include <sys/types.h>

#include <errno.h>
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <syslog.h>

#include "config.h"
#include "teapop.h"
#include "pop_cmds.h"
#include "pop_socket.h"
#include "pop_strings.h"

void
pop_cmd_list(arg, pinfo)
      char *arg;
      POP_INFO *pinfo;
{
      char *ep;
      unsigned long msg, counter;

      POP_MSG *curmsg;

      curmsg = pinfo->firstmsg;

      if (arg[0] != '\0') {
            /* Show stat for just one letter */
            errno = 0;  /* strtoul() do not set errno when successful */
            msg = strtoul(arg, &ep, 10);

            if (*ep != '\0') {
                  pop_socket_send(pinfo->out, "%s %s", POP_ERR,
                      POP_LIST_BAD);
                  return;
            }

            if (errno == ERANGE && msg == ULONG_MAX) {
                  pop_socket_send(pinfo->out, "%s %s", POP_ERR,
                      POP_MSG_BIG);
#ifdef VPOP
                  if (pinfo->domain[0] != '\0')
                        syslog(LOG_ALERT,
                            "%s@%s[%s] is sending abnormal big numbers",
                            pinfo->userid, pinfo->domain,
                            pinfo->remoteip);
                  else
#endif /* VPOP */
                        syslog(LOG_ALERT,
                            "%s[%s] is sending abnormal big numbers",
                            pinfo->userid, pinfo->remoteip);
                  return;
            }

            for (counter = 1UL; counter < msg && curmsg != NULL; counter++)
                  curmsg = curmsg->nextmsg;
            if (curmsg == NULL) {
                  pop_socket_send(pinfo->out, "%s %s", POP_ERR,
                      POP_LIST_NOMSG);
                  return;
            }
            if (curmsg->flags & MSG_DELETED) {
                  pop_socket_send(pinfo->out, "%s %s", POP_ERR,
                      POP_LIST_GONE);
                  return;
            }
            pop_socket_send(pinfo->out, "%s %lu %lu", POP_OK, msg,
                curmsg->size);
            return;
      }

      msg = 0UL;
      pop_socket_send(pinfo->out, "%s %s", POP_OK, POP_LIST_OK);
      while (curmsg != NULL) {
            msg++;
            if (!(curmsg->flags & MSG_DELETED))
                  pop_socket_send(pinfo->out, "%lu %lu", msg,
                      curmsg->size);
            curmsg = curmsg->nextmsg;
      }
      pop_socket_send(pinfo->out, ".");
}

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