/*************************************************************************** * 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. * * * * 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 timeout 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) { struct niod *nsi = (struct niod *)ms_iod; struct npool *ms = (struct npool *)nsp; struct nevent *nse; nse = event_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) { struct niod *nsi = (struct niod *)ms_iod; struct npool *ms = (struct npool *)nsp; struct nevent *nse; nse = event_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) { struct niod *nsi = (struct niod *)ms_iod; struct npool *ms = (struct npool *)nsp; struct nevent *nse; nse = event_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; }