Source Code 1994 March/Source_Code_CD-ROM_Walnut_Creek_March_1994.iso/compsrcs/misc/volume41/wwfs/part08

Text File | 1994-01-16 | 92.4 KB | 5,523 lines

Newsgroups: comp.sources.misc
From: [e-mail] (Youki Kadobayashi)
Subject: v41i093:  wwfs - WorldWide File System, Part08/22
Message-ID: <[e-mail]>
X-Md4-Signature: c34fdcb97ccedebe7957e32c08d2b9e4
Sender: [e-mail] (Kent Landfield)
Organization: Sterling Software
Date: Mon, 17 Jan 1994 02:12:45 GMT
Approved: [e-mail]

Submitted-by: [e-mail] (Youki Kadobayashi)
Posting-number: Volume 41, Issue 93
Archive-name: wwfs/part08
Environment: UNIX, inet

#! /bin/sh
# This is a shell archive.  Remove anything before this line, then feed it
# into a shell via "sh file" or similar.  To overwrite existing files,
# type "sh file -c".
# Contents:  csd/ftp_retr.c doc/manual.ps.C doc/project.ps
#   vol/uiuc-etext.vol
# Wrapped by kent@sparky on Sun Jan 16 17:48:26 1994
PATH=/bin:/usr/bin:/usr/ucb:/usr/local/bin:/usr/lbin:$PATH ; export PATH
echo If this archive is complete, you will see the following message:
echo '          "shar: End of archive 8 (of 22)."'
if test -f 'csd/ftp_retr.c' -a "${1}" != "-c" ; then
  echo shar: Will not clobber existing file \"'csd/ftp_retr.c'\"
else
  echo shar: Extracting \"'csd/ftp_retr.c'\" \(9604 characters\)
  sed "s/^X//" >'csd/ftp_retr.c' <<'END_OF_FILE'
X/*
X * WorldWide File System
X * Copyright (c) 1992,1993 Youki Kadobayashi
X * Copyright (c) 1992,1993 Osaka University
X * All rights reserved.
X *
X * Permission to use, copy, modify and distribute this software and its
X * documentation is hereby granted, provided that the following conditions
X * are met:
X * 1. Both the copyright notice and this permission notice appear in
X *    all copies of the software, derivative works or modified versions,
X *    and any portions thereof, and that both notices appear in
X *    supporting documentation.
X * 2. All advertising materials mentioning features or use of this software
X *    must display the following acknowledgement:
X *      This product includes software developed by the Osaka University
X *      and its contributors.
X * 3. Neither the name of the University nor the names of its contributors
X *    may be used to endorse or promote products derived from this software
X *    without specific prior written permission.
X *
X * THIS SOFTWARE IS PROVIDED BY THE DEVELOPER ``AS IS'' AND OSAKA
X * UNIVERSITY DISCLAIMS ANY LIABILITY OF ANY KIND FOR ANY DAMAGES
X * WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
X *
X * Osaka University requests users of this software to return to
X *
X *  Youki Kadobayashi
X *  Department of Information and Computer Sciences
X *  Osaka University, Toyonaka 560, Osaka, Japan
X *
X * any improvements or extensions that they make and grant Osaka
X * University the rights to redistribute these changes.
X */
X/* NFS over FTP */
Xstatic char *AtFSid = "$Header: ftp_retr.c[109.0] Wed Nov 24 03:47:10 1993 [e-mail] saved $";
X
X#include <sys/ioctl.h>        /* for FIONREAD */
X#include "wfs.h"
X#include "util.h"
X#include "global.h"
X
X#define RCV_BUFSIZE 32768    /* larger is better on giganets */
Xchar cs_databuf[RCV_BUFSIZE];
X
Xstatic void ftp_recv_retr();
X
Xstatic void
Xftp_read_lock(c)
Xwf_thrd *c;
X{
X    c->filep->thrdp = c;
X    ++c->dirp->n_xfer;
X}
X
Xstatic void
Xftp_read_unlock(c)
Xwf_thrd *c;
X{
X    warn_negative(--c->dirp->n_xfer);
X    c->filep->thrdp = (wf_thrd *)0;
X    if (c->cp)
X        c->cp->thrdp = (wf_thrd *)0;
X}
X
Xstatic void ftp_read_2(), ftp_read_3(), ftp_read_timeout(), ftp_read_fail();
Xstatic void ftp_port_close();
Xstatic int ftp_port_open(), ftp_port_accept(), ftp_send_port();
X
Xvoid
Xftp_read_miss(c)
Xwf_thrd *c;
X/* in: rqstp, volp, offset, count, totalcount, dirp, filep */
X/* out: cp, flag */
X{
X    ftp_read_lock(c);
X    c->callout =
X        timeout_set(gettime()+1, ftp_read_timeout, c);
X    c->cp = vol_getconn(c->child_volp);
X    if (c->cp == (wf_conn *)0) {
X        if ((c->child_volp->flag & WF_VOL_XCONN)
X            || (c->cp = vol_newconn(c->child_volp)) == (wf_conn *)0) {
X            /* exceeded resource limit */
X            ftp_read_unlock(c);
X            timeout_clear(c->callout);
X            (*c->reply)(c, WF_ERR_NQUOT);
X            return;
X        }
X        assert(c->cp != (wf_conn *)0);
X        /* new connection needed */
X        sched_task(ftp_read_2, c, &c->cp);
X        thrd_watch(c);
X        c->flag |= WF_THREAD_BUSY;
X        ftp_conn_open(c);
X        return;
X    }
X    c->flag |= WF_THREAD_BUSY;
X    ftp_read_2(c);
X}
X
Xstatic void
Xftp_retr_status(c)
Xwf_thrd *c;
X{
X    int ret;
X
X    ret = ftp_recv_status(c->cp);
X    if (c->flag & WF_THREAD_ERROR) {
X        if (ret == 426)
X            ftp_read_fail(c);
X        else
X            ftp_read_3(c);
X    }
X}
X
Xstatic void
Xftp_read_2(c)
Xwf_thrd *c;
X{
X    int ret;
X
X    c->idle = 0;
X    switch (c->step) {
X    case FTPS_CONN_FAIL:
X        ftp_read_fail(c);
X        return;
X    case FTPS_PROMPT:
X#ifdef VERBOSE
X        talk(c->client, "retrieving file %s/%s",
X             c->dirp->name, c->filep->name);
X        dlog("retrieving file %s/%s", c->dirp->name, c->filep->name);
X#endif
X        c->cp->thrdp = c;
X        c->flag |= WF_THREAD_RISKY;
X        c->give_up = ftp_read_fail;
X        c->closure = (void *)c;
X        ftp_port_open(c);
X        ret = ftp_send_port(c);
X        if (ret < 0) {
X            ftp_read_fail(c);
X            return;
X        }
X        c->step = FTPS_RETR_SEND;
X        so_clear(c->cp->id);
X        so_callback(c->cp->id, ftp_read_2, c);
X        return;
X    case FTPS_RETR_SEND:
X        ret = ftp_recv_status(c->cp);
X        if (ret == 200) {
X            so_clear(c->cp->id);
X            so_callback(c->cp->id, ftp_retr_status, c);
X            tcp_send(c->cp->id, "RETR /%s%s/%s\r\n",
X                 c->cp->info, c->dirp->name, c->filep->name);
X            if (cs_ftp_debug) {
X                req_send(cs_ftp_debug, "RETR /%s%s/%s\r\n",
X                     c->cp->info, c->dirp->name,
X                     c->filep->name);
X            }
X            c->step = FTPS_PORT_ACCEPT;
X            so_callback(c->so, ftp_read_2, c);
X        } else if (ret == 0 || ret < 400) {
X            /* expect more replies */
X            c->step = FTPS_RETR_SEND;
X        } else {
X            ftp_read_3(c);
X        }
X        return;
X    case FTPS_PORT_ACCEPT:
X        so_clear(c->so);
X        ftp_port_accept(c);
X        /* ready for data transfer. now receive data. */
X        c->step = FTPS_RETR_RECVINIT;
X        sched_task(ftp_read_3, c, &c->so);
X        so_callback(c->so, ftp_recv_retr, c);
X        return;
X    }
X}
X
X#ifdef TRACE
Xstatic void
Xftp_retr_trace(c)
Xwf_thrd *c;
X{
X    wf_trace *tracep;
X    tracep = ALLOC(wf_trace);
X    tracep->time = gettime();
X    tracep->volume = c->child_volp->id;
X    tracep->dir = c->dirp->id;
X    tracep->file = c->filep->id;
X    tracep->op = WF_OP_READ;
X    tracep->hit = WF_CACHE_READY;
X    tracep->arg = (long) c->filep->fattr.size;
X    trace_event(c, tracep);
X}
X#endif
X
Xstatic void
Xftp_read_3(c)
Xwf_thrd *c;
X{
X    int ret;
X
X    so_clear(c->cp->id);
X    so_callback(c->cp->id, ftp_recv_junk, (void *)c->cp->id);
X    ftp_port_close(c->so);
X    ftp_read_unlock(c);
X    vol_releaseconn(c->child_volp);
X    if (c->flag & WF_THREAD_ERROR) {
X#ifdef VERBOSE
X        talk(c->client, "couldn't retrieve %s/%s",
X             c->dirp->name, c->filep->name);
X        dlog("couldn't retrieve %s/%s",
X             c->dirp->name, c->filep->name);
X#endif
X    } else {
X        file_recv_finish(c->child_volp, c->dirp, c->filep);
X#ifdef VERBOSE
X        talk(c->client, "retrieved %s/%s",
X             c->dirp->name, c->filep->name);
X        dlog("retrieved %s/%s", c->dirp->name, c->filep->name);
X#endif
X    }
X    if (! (c->flag & WF_THREAD_TIMEOUT)) {
X        timeout_clear(c->callout);
X    }
X    c->flag &= ~WF_THREAD_BUSY;
X    if (c->flag & WF_THREAD_ERROR) {
X        (*c->reply)(c, WF_ERR_IO);
X    } else {
X#ifdef TRACE
X        ftp_retr_trace(c);
X#endif
X        (*c->reply)(c, WF_REP_OK);
X    }
X}
X
Xstatic void
Xftp_read_timeout(c)
Xwf_thrd *c;
X{
X    c->flag |= WF_THREAD_TIMEOUT;
X    (*c->reply)(c, WF_REP_WAIT);
X}
X
Xstatic void
Xftp_read_fail(c)
Xwf_thrd *c;
X{
X    wf_conn *cp = c->cp;
X    c->flag |= WF_THREAD_ERROR;
X    ftp_read_3(c);
X    conn_shutdown(cp, 2);
X}
X
Xstatic int
Xftp_port_open(c)
Xwf_thrd *c;
X{
X    int so, opt;
X    struct sockaddr_in sin;
X    int sinlen;
X    int ret;
X
X    so = socket(AF_INET, SOCK_STREAM, 0);
X    if (so < 0) {
X        errno_diag();
X        return -1;
X    }
X    opt = 1;
X    ioctl(so, FIONBIO, &opt);
X    setsockopt(so, SOL_SOCKET, SO_REUSEADDR, (char *)&opt, sizeof(int));
X    opt = RCV_BUFSIZE;
X    setsockopt(so, SOL_SOCKET, SO_RCVBUF, (char *)&opt, sizeof(int));
X    so_register(so, WF_SO_READ);
X    bzero(&sin, sizeof(sin));
X    sin.sin_family = AF_INET;
X    sin.sin_addr.s_addr = htonl(INADDR_ANY);
X    ret = bind(so, (struct sockaddr *) &sin, sizeof (sin));
X    if (ret < 0) {
X        errno_diag();
X        return ret;
X    }
X    sinlen = sizeof (sin);
X    getsockname(so, (struct sockaddr *) &sin, &sinlen);
X    c->port = ntohs(sin.sin_port);
X    c->so = so;
X    listen(so, 1);
X    return ret;
X}
X
Xstatic int
Xftp_port_accept(c)
Xwf_thrd *c;
X{
X    int ret;
X    sockaddr_in sin;
X    int sinlen;
X
X    sinlen = sizeof(sin);
X    ret = accept(c->so, (struct sockaddr *) &sin, &sinlen);
X    if (ret < 0) {
X        errno_diag();
X        return ret;
X    }
X    close(c->so);
X    so_unregister(c->so, WF_SO_READ);
X    c->so = ret;
X    so_register(ret, WF_SO_READ);
X    if (bcmp(&sin.sin_addr, &c->cp->srv->sin.sin_addr,
X         sizeof (struct in_addr))) {
X        syslog(LOG_WARNING, "ftp_port_accept: sin_addr mismatch");
X        return -1;
X    }
X    return ret;
X}
X
Xstatic void
Xftp_port_close(so)
Xint so;
X{
X    so_clear(so);
X    so_unregister(so, WF_SO_ALL);
X    close(so);
X}
X
Xstatic int
Xftp_send_port(c)
Xwf_thrd *c;
X{
X    char buf[64];
X    int ret, sinlen;
X    long ipaddr;
X    sockaddr_in sin;
X
X    sinlen = sizeof (sin);
X    getsockname(c->cp->id, (struct sockaddr *)&sin, &sinlen);
X    /* ipforwarding fix from [e-mail] */
X    ipaddr = ntohl(sin.sin_addr.s_addr);
X    ret = tcp_send(c->cp->id, "PORT %d,%d,%d,%d,%d,%d\r\n",
X               ((ipaddr >> 24) & 0xFF),
X               ((ipaddr >> 16) & 0xFF),
X               ((ipaddr >> 8) & 0xFF),
X               ((ipaddr >> 0) & 0xFF),
X               ((c->port >> 8) & 0xFF),
X               ((c->port >> 0) & 0xFF));
X    if (cs_ftp_debug) {
X        req_send(cs_ftp_debug, "PORT %d,%d,%d,%d,%d,%d\r\n",
X             ((ipaddr >> 24) & 0xFF),
X             ((ipaddr >> 16) & 0xFF),
X             ((ipaddr >> 8) & 0xFF),
X             ((ipaddr >> 0) & 0xFF),
X             ((c->port >> 8) & 0xFF),
X             ((c->port >> 0) & 0xFF));
X    }
X    return ret;
X}
X
Xstatic void
Xftp_recv_retr(c)
Xwf_thrd *c;
X{
X    long navail;
X    int nread;
X    int ret, optlen;
X
X    if (c->flag & WF_THREAD_ERROR) {
X#ifdef VERBOSE
X        dlog("transfer error, discarding %s", c->filep->name);
X#endif
X        close(c->fd);
X        file_recv_abort(c->child_volp, c->dirp, c->filep);
X        c->step = FTPS_RETR_FIN;
X    }
X    c->idle = 0;    /* Hey, I'm alive and healthy */
X    switch (c->step) {
X    case FTPS_RETR_RECVINIT:
X        c->fd = file_recv_init(c->child_volp, c->dirp, c->filep);
X        c->step = FTPS_RETR_RECVLOOP;
X    case FTPS_RETR_RECVLOOP:
X        ioctl(c->so, FIONREAD, &navail);
X        nread = MIN(navail, RCV_BUFSIZE);
X        if (nread == 0) {
X            optlen = sizeof(int);
X            getsockopt(c->so, SOL_SOCKET, SO_ERROR,
X                   &ret, &optlen);
X            if (ret && ret < sys_nerr) {
X                dlog("ftp_recv_retr: %s", sys_errlist[ret]);
X            }
X            /* otherwise, transfer completed. close anyway */
X            close(c->fd);
X            break;
X        }
X        ret = recv(c->so, cs_databuf, nread, 0);
X        if (ret < 0) {
X            errno_diag();
X            c->flag |= WF_THREAD_ERROR;
X            close(c->fd);
X            break;
X        }
X        c->cp->stats.bytes_from_server += nread;
X        c->child_volp->stats.bytes_from_server += nread;
X        ret = write(c->fd, cs_databuf, nread);
X        if (ret < 0) {
X            errno_diag();
X            c->flag |= WF_THREAD_ERROR;
X            close(c->fd);
X            break;
X        }
X        return;
X    case FTPS_RETR_FIN:
X        break;
X    }
X    wakeup(&c->so);
X}
END_OF_FILE
  if test 9604 -ne `wc -c <'csd/ftp_retr.c'`; then
    echo shar: \"'csd/ftp_retr.c'\" unpacked with wrong size!
  fi
  # end of 'csd/ftp_retr.c'
fi
if test -f 'doc/manual.ps.C' -a "${1}" != "-c" ; then
  echo shar: Will not clobber existing file \"'doc/manual.ps.C'\"
else
  echo shar: Extracting \"'doc/manual.ps.C'\" \(60854 characters\)
  sed "s/^X//" >'doc/manual.ps.C' <<'END_OF_FILE'
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X15 r (/etc/rc.local)s
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XEP
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END_OF_FILE
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fi
if test -f 'vol/uiuc-etext.vol' -a "${1}" != "-c" ; then
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Xftp-server:    mrcnext.cso.uiuc.edu
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Xftp-server:    etext.archive.umich.edu
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END_OF_FILE
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fi
echo shar: End of archive 8 \(of 22\).
cp /dev/null ark8isdone
MISSING=""
for I in 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 ; do
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done
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else
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fi
exit 0
exit 0 # Just in case...