freebsd-src/usr.sbin/sysinstall/ftp.c
Jordan K. Hubbard 3796819e5c Enable the same path deduction as for ftp install (great for snapshot tests)
Allow user to change proxy server
Allow user to change ftp path

Submitted by:	pho
2000-12-06 00:47:54 +00:00

281 lines
7.9 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.
*
* $FreeBSD$
*
* Copyright (c) 1995
* Jordan Hubbard. 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.
*
* 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 <pwd.h>
#include <ftpio.h>
Boolean ftpInitted = FALSE;
static FILE *OpenConn;
int FtpPort;
/* List of sub directories to look for under a given FTP server. */
const char *ftp_dirs[] = { ".", "releases/"MACHINE, "snapshots/"MACHINE,
"pub/FreeBSD", "pub/FreeBSD/releases/"MACHINE,
"pub/FreeBSD/snapshots/"MACHINE, NULL };
/* Brings up attached network device, if any - takes FTP device as arg */
static Boolean
netUp(Device *dev)
{
Device *netdev = (Device *)dev->private;
if (netdev)
return netdev->init(netdev);
else
return TRUE; /* No net == happy net */
}
/* Brings down attached network device, if any - takes FTP device as arg */
static void
netDown(Device *dev)
{
Device *netdev = (Device *)dev->private;
if (netdev)
netdev->shutdown(netdev);
}
Boolean
mediaInitFTP(Device *dev)
{
int i, code, af, fdir;
char *cp, *rel, *hostname, *dir;
char *user, *login_name, password[80];
if (ftpInitted)
return TRUE;
if (OpenConn) {
fclose(OpenConn);
OpenConn = NULL;
}
/* If we can't initialize the network, bag it! */
if (!netUp(dev))
return FALSE;
try:
cp = variable_get(VAR_FTP_PATH);
if (!cp) {
if (DITEM_STATUS(mediaSetFTP(NULL)) == DITEM_FAILURE || (cp = variable_get(VAR_FTP_PATH)) == NULL) {
msgConfirm("Unable to get proper FTP path. FTP media not initialized.");
netDown(dev);
return FALSE;
}
}
hostname = variable_get(VAR_FTP_HOST);
dir = variable_get(VAR_FTP_DIR);
if (!hostname || !dir) {
msgConfirm("Missing FTP host or directory specification. FTP media not initialized,");
netDown(dev);
return FALSE;
}
user = variable_get(VAR_FTP_USER);
login_name = (!user || !*user) ? "anonymous" : user;
if (variable_get(VAR_FTP_PASS))
SAFE_STRCPY(password, variable_get(VAR_FTP_PASS));
else if (RunningAsInit)
sprintf(password, "installer@%s", variable_get(VAR_HOSTNAME));
else {
struct passwd *pw;
char *user;
pw = getpwuid(getuid());
user = pw ? pw->pw_name : "ftp";
sprintf(password, "%s@%s", user, variable_get(VAR_HOSTNAME));
}
af = variable_cmp(VAR_IPV6_ENABLE, "YES") ? AF_INET : AF_UNSPEC;
msgNotify("Logging in to %s@%s..", login_name, hostname);
if ((OpenConn = ftpLoginAf(hostname, af, login_name, password, FtpPort, isDebug(), &code)) == NULL) {
msgConfirm("Couldn't open FTP connection to %s:\n %s.", hostname, ftpErrString(code));
goto punt;
}
ftpPassive(OpenConn, !strcmp(variable_get(VAR_FTP_STATE), "passive"));
ftpBinary(OpenConn);
if (dir && *dir != '\0') {
if ((i = ftpChdir(OpenConn, dir)) != 0) {
if (i == 550)
msgConfirm("No such directory ftp://%s/%s\n"
"please check your URL and try again.", hostname, dir);
else
msgConfirm("FTP chdir to ftp://%s/%s returned error status:\n %s.", hostname, dir, ftpErrString(i));
goto punt;
}
}
/*
* Now that we've verified that the path we're given is ok, let's try to
* be a bit intelligent in locating the release we are looking for. First
* off, if the release is specified as "__RELEASE" or "any", then just
* assume that the current directory is the one we want and give up.
*/
rel = variable_get(VAR_RELNAME);
if (strcmp(rel, "__RELEASE") && strcmp(rel, "any")) {
/*
* Ok, since we have a release variable, let's walk through the list
* of directories looking for a release directory. The first one to
* match wins. For each case, we chdir to ftp_dirs[fdir] first. If
* that fails, we skip to the next one. Otherwise, we try to chdir to
* rel. If it succeeds we break out. If it fails, then we go back to
* the base directory and try again. Lots of chdirs, but oh well. :)
*/
for (fdir = 0; ftp_dirs[fdir]; fdir++) {
if (ftpChdir(OpenConn, (char *)ftp_dirs[fdir]) != 0)
continue;
if (ftpChdir(OpenConn, rel) == 0) {
ftpInitted = TRUE;
return TRUE;
}
else /* reset to "root" dir for a fresh try */
ftpChdir(OpenConn, "/");
}
/*
* If we get here, then all of the directories we tried failed, so
* print out the error message and ask the user if they want to try
* again.
*/
if (!msgYesNo("Warning: Can't find the `%s' distribution on this\n"
"FTP server. You may need to visit a different server for\n"
"the release you are trying to fetch or go to the Options\n"
"menu and to set the release name to explicitly match what's\n"
"available on %s (or set to \"any\").\n\n"
"Would you like to select another FTP server?",
rel, hostname)) {
variable_unset(VAR_FTP_PATH);
if (DITEM_STATUS(mediaSetFTP(NULL)) != DITEM_FAILURE)
goto try;
}
} else {
ftpInitted = TRUE;
return TRUE;
}
punt:
ftpInitted = FALSE;
if (OpenConn != NULL) {
fclose(OpenConn);
OpenConn = NULL;
}
netDown(dev);
variable_unset(VAR_FTP_PATH);
return FALSE;
}
FILE *
mediaGetFTP(Device *dev, char *file, Boolean probe)
{
int nretries = 1;
FILE *fp;
char *try, buf[PATH_MAX];
if (!OpenConn) {
msgDebug("No FTP connection open, can't get file %s\n", file);
return NULL;
}
try = file;
while ((fp = ftpGet(OpenConn, try, 0)) == NULL) {
int ftperr = ftpErrno(OpenConn);
/* If a hard fail, try to "bounce" the ftp server to clear it */
if (ftperr != 550) {
if (ftperr != 421) /* Timeout? */
variable_unset(VAR_FTP_PATH);
/* If we can't re-initialize, just forget it */
dev->shutdown(dev);
if (!dev->init(dev)) {
netDown(dev);
if (OpenConn) {
fclose(OpenConn);
OpenConn = NULL;
}
variable_unset(VAR_FTP_PATH);
return NULL;
}
}
else if (probe)
return NULL;
else {
/* Try some alternatives */
switch (nretries++) {
case 1:
sprintf(buf, "releases/%s", file);
try = buf;
break;
case 2:
sprintf(buf, "%s/%s", variable_get(VAR_RELNAME), file);
try = buf;
break;
case 3:
sprintf(buf, "%s/releases/%s", variable_get(VAR_RELNAME), file);
try = buf;
break;
case 4:
try = file;
break;
}
}
}
return fp;
}
void
mediaShutdownFTP(Device *dev)
{
if (!ftpInitted)
return;
if (OpenConn != NULL) {
fclose(OpenConn);
OpenConn = NULL;
}
ftpInitted = FALSE;
}