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nsock_read.c
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/***************************************************************************
* nsock_read.c -- This contains the functions for requesting various read *
* events from the nsock parallel socket event library *
* *
***********************IMPORTANT NSOCK LICENSE TERMS***********************
* *
* The nsock parallel socket event library is (C) 1999-2013 Insecure.Com *
* LLC This library is free software; you may redistribute and/or *
* modify it under the terms of the GNU General Public License as *
* published by the Free Software Foundation; Version 2. This guarantees *
* your right to use, modify, and redistribute this software under certain *
* conditions. If this license is unacceptable to you, Insecure.Com LLC *
* may be willing to sell alternative licenses (contact *
* sales@insecure.com ). *
* *
* As a special exception to the GPL terms, Insecure.Com LLC grants *
* permission to link the code of this program with any version of the *
* OpenSSL library which is distributed under a license identical to that *
* listed in the included docs/licenses/OpenSSL.txt file, and distribute *
* linked combinations including the two. You must obey the GNU GPL in all *
* respects for all of the code used other than OpenSSL. If you modify *
* this file, you may extend this exception to your version of the file, *
* but you are not obligated to do so. *
* *
* If you received these files with a written license agreement stating *
* terms other than the (GPL) terms above, then that alternative license *
* agreement takes precedence over this comment. *
* *
* Source is provided to this software because we believe users have a *
* right to know exactly what a program is going to do before they run it. *
* This also allows you to audit the software for security holes (none *
* have been found so far). *
* *
* Source code also allows you to port Nmap to new platforms, fix bugs, *
* and add new features. You are highly encouraged to send your changes *
* to the dev@nmap.org mailing list for possible incorporation into the *
* main distribution. By sending these changes to Fyodor or one of the *
* Insecure.Org development mailing lists, or checking them into the Nmap *
* source code repository, it is understood (unless you specify otherwise) *
* that you are offering the Nmap Project (Insecure.Com LLC) the *
* unlimited, non-exclusive right to reuse, modify, and relicense the *
* code. Nmap will always be available Open Source, but this is important *
* because the inability to relicense code has caused devastating problems *
* for other Free Software projects (such as KDE and NASM). We also *
* occasionally relicense the code to third parties as discussed above. *
* If you wish to specify special license conditions of your *
* contributions, just say so when you send them. *
* *
* 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 v2.0 for more details *
* (http://www.gnu.org/licenses/gpl-2.0.html). *
* *
***************************************************************************/
/* $Id$ */
#include "nsock_internal.h"
#include "nsock_log.h"
#include "netutils.h"
/* Read up to nlines lines (terminated with \n, which of course includes \r\n),
* or until EOF, or until the timeout, whichever comes first. Note that
* NSE_STATUS_SUCCESS will be returned in the case of EOF or tiemout if at least
* 1 char has been read. Also note that you may get more than 'nlines' back --
* we just stop once "at least" 'nlines' is read */
nsock_event_id nsock_readlines(nsock_pool nsp, nsock_iod ms_iod, nsock_ev_handler handler, int timeout_msecs,
void *userdata, int nlines) {
msiod *nsi = (msiod *)ms_iod;
mspool *ms = (mspool *)nsp;
msevent *nse;
nse = msevent_new(ms, NSE_TYPE_READ, nsi, timeout_msecs, handler, userdata);
assert(nse);
nsock_log_info(ms, "Read request for %d lines from IOD #%li [%s] EID %li",
nlines, nsi->id, get_peeraddr_string(nsi), nse->id);
nse->readinfo.read_type = NSOCK_READLINES;
nse->readinfo.num = nlines;
nsp_add_event(ms, nse);
return nse->id;
}
/* Same as above, except it tries to read at least 'nbytes' instead of 'nlines'. */
nsock_event_id nsock_readbytes(nsock_pool nsp, nsock_iod ms_iod, nsock_ev_handler handler, int timeout_msecs,
void *userdata, int nbytes) {
msiod *nsi = (msiod *)ms_iod;
mspool *ms = (mspool *)nsp;
msevent *nse;
nse = msevent_new(ms, NSE_TYPE_READ, nsi, timeout_msecs, handler, userdata);
assert(nse);
nsock_log_info(ms, "Read request for %d bytes from IOD #%li [%s] EID %li",
nbytes, nsi->id, get_peeraddr_string(nsi), nse->id);
nse->readinfo.read_type = NSOCK_READBYTES;
nse->readinfo.num = nbytes;
nsp_add_event(ms, nse);
return nse->id;
}
/* The simplest read function -- returns NSE_STATUS_SUCCESS when it
* reads anything, otherwise it returns timeout, eof, or error as appropriate */
nsock_event_id nsock_read(nsock_pool nsp, nsock_iod ms_iod, nsock_ev_handler handler, int timeout_msecs, void *userdata) {
msiod *nsi = (msiod *)ms_iod;
mspool *ms = (mspool *)nsp;
msevent *nse;
nse = msevent_new(ms, NSE_TYPE_READ, nsi, timeout_msecs, handler, userdata);
assert(nse);
nsock_log_info(ms, "Read request from IOD #%li [%s] (timeout: %dms) EID %li",
nsi->id, get_peeraddr_string(nsi), timeout_msecs, nse->id);
nse->readinfo.read_type = NSOCK_READ;
nsp_add_event(ms, nse);
return nse->id;
}