top.c
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/* GNU mailutils - a suite of utilities for electronic mail
Copyright (C) 1999, 2000 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
#include "pop3d.h"
/* Prints the header of a message plus a specified number of lines. */
int
pop3_top (const char *arg)
{
int mesg, lines;
message_t msg;
attribute_t attr;
header_t hdr;
body_t body;
stream_t stream;
char *mesgc, *linesc;
char buf[BUFFERSIZE];
size_t n;
off_t off;
if (strlen (arg) == 0)
return ERR_BAD_ARGS;
if (state != TRANSACTION)
return ERR_WRONG_STATE;
mesgc = pop3_cmd (arg);
linesc = pop3_args (arg);
mesg = atoi (mesgc);
lines = strlen (linesc) > 0 ? atoi (linesc) : -1;
free (mesgc);
free (linesc);
if (lines < 0)
return ERR_BAD_ARGS;
if (mailbox_get_message (mbox, mesg, &msg) != 0)
return ERR_NO_MESG;
message_get_attribute (msg, &attr);
if (attribute_is_deleted (attr))
return ERR_MESG_DELE;
fprintf (ofile, "+OK\r\n");
/* Header. */
message_get_header (msg, &hdr);
header_get_stream (hdr, &stream);
off = n = 0;
while (stream_readline (stream, buf, sizeof (buf) - 1, off, &n) == 0)
{
if (n == 0)
break;
/* Nuke the trainline newline. */
if (buf[n - 1] == '\n')
buf [n - 1] = '\0';
off += n;
fprintf (ofile, "%s\r\n", buf);
}
/* Lines of body. */
if (lines)
{
message_get_body (msg, &body);
body_get_stream (body, &stream);
for (n = off = 0; lines > 0; lines--, off += n)
{
int status = stream_readline (stream, buf, sizeof (buf), off, &n);
if (status != 0 || n == 0)
break;
/* Nuke the trainline newline. */
if (buf[n - 1] == '\n')
buf[n - 1] = '\0';
if (buf[0] == '.')
fprintf (ofile, ".%s\r\n", buf);
else
fprintf (ofile, "%s\r\n", buf);
}
}
fprintf (ofile, ".\r\n");
return OK;
}