freebsd-src/release/sysinstall/ftp_strat.c
1995-06-11 19:33:05 +00:00

263 lines
7.2 KiB
C

/*
* The new sysinstall program.
*
* This is probably the last attempt in the `sysinstall' line, the next
* generation being slated to essentially a complete rewrite.
*
* $Id: ftp_strat.c,v 1.6.2.25 1995/06/07 09:53:14 jkh Exp $
*
* Copyright (c) 1995
* Jordan Hubbard. All rights reserved.
* Copyright (c) 1995
* Gary J Palmer. All rights reserved.
*
* 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,
* verbatim and that no modifications are made prior to this
* point in the file.
* 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Jordan Hubbard
* for the FreeBSD Project.
* 4. The name of Jordan Hubbard or the FreeBSD project may not be used to
* endorse or promote products derived from this software without specific
* prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY JORDAN HUBBARD ``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 JORDAN HUBBARD OR HIS PETS 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, LIFE 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 "sysinstall.h"
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <sys/param.h>
#include <sys/wait.h>
#include <netdb.h>
#include "ftp.h"
Boolean ftpInitted;
static FTP_t ftp;
extern int FtpPort;
int
mediaSetFtpUserPass(char *str)
{
char *user, *pass;
dialog_clear();
if ((user = msgGetInput(getenv(FTP_USER), "Please enter the username you wish to login as")) != NULL)
variable_set2(FTP_USER, user);
if ((pass = msgGetInput(getenv(FTP_PASS), "Please enter the password for this user.\nWARNING: This password will echo on the screen!")) != NULL)
variable_set2(FTP_PASS, pass);
dialog_clear();
return 0;
}
static Boolean
get_new_host(Device *dev)
{
Boolean i;
char *oldTitle = MenuMediaFTP.title;
Device *netDev = dev->private;
MenuMediaFTP.title = "Connection timed out - please select another site";
i = mediaSetFTP(NULL);
MenuMediaFTP.title = oldTitle;
if (i) {
char *cp = getenv(FTP_USER);
if (cp && *cp)
(void)mediaSetFtpUserPass(NULL);
netDev->flags |= OPT_LEAVE_NETWORK_UP;
(*dev->shutdown)(dev);
i = (*dev->init)(dev);
netDev->flags &= ~OPT_LEAVE_NETWORK_UP;
}
return i;
}
static Boolean HasDistsDir;
Boolean
mediaInitFTP(Device *dev)
{
int i, retries, max_retries = MAX_FTP_RETRIES;
char *cp, *hostname, *dir;
char *user, *login_name, password[80], url[BUFSIZ];
Device *netDevice = (Device *)dev->private;
if (ftpInitted)
return TRUE;
if (!(*netDevice->init)(netDevice))
return FALSE;
if ((ftp = FtpInit()) == NULL) {
msgConfirm("FTP initialisation failed!");
goto punt;
}
if (isDebug())
msgDebug("Initialized FTP library.\n");
cp = getenv("ftp");
if (!cp)
goto punt;
if (isDebug())
msgDebug("Attempting to open connection for: %s\n", cp);
hostname = getenv(VAR_HOSTNAME);
if (strncmp("ftp://", cp, 6) != NULL) {
msgConfirm("Invalid URL: %s\n(A URL must start with `ftp://' here)", cp);
goto punt;
}
strncpy(url, cp, BUFSIZ);
if (isDebug())
msgDebug("Using URL `%s'\n", url);
hostname = url + 6;
if ((cp = index(hostname, ':')) != NULL) {
*(cp++) = '\0';
FtpPort = strtol(cp, 0, 0);
}
else
FtpPort = 21;
if ((dir = index(cp ? cp : hostname, '/')) != NULL)
*(dir++) = '\0';
if (isDebug()) {
msgDebug("hostname = `%s'\n", hostname);
msgDebug("dir = `%s'\n", dir ? dir : "/");
msgDebug("port # = `%d'\n", FtpPort);
}
msgNotify("Looking up host %s..", hostname);
if ((gethostbyname(hostname) == NULL) && (inet_addr(hostname) == INADDR_NONE)) {
msgConfirm("Cannot resolve hostname `%s'! Are you sure that your\nname server, gateway and network interface are configured?", hostname);
goto punt;
}
user = getenv(FTP_USER);
if (!user || !*user) {
snprintf(password, BUFSIZ, "installer@%s", hostname);
login_name = "anonymous";
}
else {
login_name = user;
strcpy(password, getenv(FTP_PASS) ? getenv(FTP_PASS) : login_name);
}
retries = i = 0;
if (OptFlags & (OPT_FTP_RESELECT + OPT_FTP_ABORT))
max_retries = 0;
retry:
if (i && ++retries > max_retries) {
if ((OptFlags & OPT_FTP_ABORT) || !get_new_host(dev))
return FALSE;
retries = 0;
}
msgNotify("Logging in as %s..", login_name);
if ((i = FtpOpen(ftp, hostname, login_name, password)) != 0) {
if (OptFlags & OPT_NO_CONFIRM)
msgNotify("Couldn't open FTP connection to %s\n", hostname);
else
msgConfirm("Couldn't open FTP connection to %s\n", hostname);
goto retry;
}
FtpPassive(ftp, (OptFlags & OPT_FTP_PASSIVE) ? 1 : 0);
FtpBinary(ftp, 1);
if (dir && *dir != '\0') {
msgNotify("CD to distribution in ~ftp/%s", dir);
if ((i = FtpChdir(ftp, dir)) == -2)
goto retry;
}
if (!FtpChdir(ftp, "dists")) {
HasDistsDir = TRUE;
FtpChdir(ftp, ".."); /* Hope this works! :-( */
}
else
HasDistsDir = FALSE;
if (isDebug())
msgDebug("leaving mediaInitFTP!\n");
ftpInitted = TRUE;
return TRUE;
punt:
FtpClose(ftp);
ftp = NULL;
(*netDevice->shutdown)(netDevice);
return FALSE;
}
int
mediaGetFTP(Device *dev, char *file, Attribs *dist_attrs)
{
int fd;
int nretries = 0, max_retries = MAX_FTP_RETRIES;
Boolean inDists = FALSE;
if (OptFlags & (OPT_FTP_RESELECT + OPT_FTP_ABORT) || dev->flags & OPT_EXPLORATORY_GET)
max_retries = 1;
while ((fd = FtpGet(ftp, file)) < 0) {
/* If a hard fail, try to "bounce" the ftp server to clear it */
if (fd == -2 || ++nretries > max_retries) {
if ((OptFlags & OPT_FTP_ABORT) || (dev->flags & OPT_EXPLORATORY_GET))
return -1;
else if (!get_new_host(dev))
return -2;
nretries = 0;
continue;
}
if (HasDistsDir) {
if (!inDists) {
FtpChdir(ftp, "dists");
inDists = TRUE;
}
else {
FtpChdir(ftp, "..");
inDists = FALSE;
}
}
}
if (inDists)
FtpChdir(ftp, "..");
return fd;
}
Boolean
mediaCloseFTP(Device *dev, int fd)
{
FtpEOF(ftp);
if (!close(fd))
return (TRUE);
return FALSE;
}
void
mediaShutdownFTP(Device *dev)
{
Device *netdev = (Device *)dev->private;
if (!ftpInitted)
return;
if (ftp != NULL) {
FtpClose(ftp);
ftp = NULL;
}
(*netdev->shutdown)(netdev);
ftpInitted = FALSE;
}