FreeBSD-5.3/usr.sbin/sysinstall/http.c
/*
* Copyright (c) 1999
* Philipp Mergenthaler <philipp.mergenthaler@stud.uni-karlsruhe.de>
* 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.
* 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 THE AUTHOR AND CONTRIBUTORS ``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 THE AUTHOR OR CONTRIBUTORS 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.
*
* $FreeBSD: src/usr.sbin/sysinstall/http.c,v 1.7 2002/11/01 02:05:05 kuriyama Exp $
*/
#include "sysinstall.h"
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <sys/param.h>
#include <netdb.h>
extern const char *ftp_dirs[]; /* defined in ftp.c */
Boolean
checkAccess(Boolean proxyCheckOnly)
{
/*
* Some proxies fetch files with certain extensions in "ascii mode" instead
* of "binary mode" for FTP. The FTP server then translates all LF to CRLF.
*
* You can force Squid to use binary mode by appending ";type=i" to the URL,
* which is what I do here. For other proxies, the LF->CRLF substitution
* is reverted in distExtract().
*/
int rv, s, af;
bool el, found=FALSE; /* end of header line */
char *cp, buf[PATH_MAX], req[BUFSIZ];
struct addrinfo hints, *res, *res0;
af = variable_cmp(VAR_IPV6_ENABLE, "YES") ? AF_INET : AF_UNSPEC;
memset(&hints, 0, sizeof(hints));
hints.ai_family = af;
hints.ai_socktype = SOCK_STREAM;
hints.ai_protocol = 0;
if ((rv = getaddrinfo(variable_get(VAR_HTTP_HOST),
variable_get(VAR_HTTP_PORT), &hints, &res0)) != 0) {
msgConfirm("%s", gai_strerror(rv));
variable_unset(VAR_HTTP_HOST);
return FALSE;
}
s = -1;
for (res = res0; res; res = res->ai_next) {
if ((s = socket(res->ai_family, res->ai_socktype,
res->ai_protocol)) < 0)
continue;
if (connect(s, res->ai_addr, res->ai_addrlen) >= 0)
break;
close(s);
s = -1;
}
freeaddrinfo(res0);
if (s == -1) {
msgConfirm("Couldn't connect to proxy %s:%s",
variable_get(VAR_HTTP_HOST),variable_get(VAR_HTTP_PORT));
variable_unset(VAR_HTTP_HOST);
return FALSE;
}
if (proxyCheckOnly) {
close(s);
return TRUE;
}
msgNotify("Checking access to\n %s", variable_get(VAR_HTTP_PATH));
sprintf(req,"GET %s/ HTTP/1.0\r\n\r\n", variable_get(VAR_HTTP_PATH));
write(s,req,strlen(req));
/*
* scan the headers of the response
* this is extremely quick'n dirty
*
*/
bzero(buf, PATH_MAX);
cp=buf;
el=FALSE;
rv=read(s,cp,1);
variable_set2(VAR_HTTP_FTP_MODE,"",0);
while (rv>0) {
if ((*cp == '\012') && el) {
/* reached end of a header line */
if (!strncmp(buf,"HTTP",4)) {
if (strtol((char *)(buf+9),0,0) == 200) {
found = TRUE;
}
}
if (!strncmp(buf,"Server: ",8)) {
if (!strncmp(buf,"Server: Squid",13)) {
variable_set2(VAR_HTTP_FTP_MODE,";type=i",0);
} else {
variable_set2(VAR_HTTP_FTP_MODE,"",0);
}
}
/* ignore other headers */
/* check for "\015\012" at beginning of line, i.e. end of headers */
if ((cp-buf) == 1)
break;
cp=buf;
rv=read(s,cp,1);
} else {
el=FALSE;
if (*cp == '\015')
el=TRUE;
cp++;
rv=read(s,cp,1);
}
}
close(s);
return found;
}
Boolean
mediaInitHTTP(Device *dev)
{
bool found=FALSE; /* end of header line */
char *rel, req[BUFSIZ];
int fdir;
/*
* First verify the proxy access
*/
checkAccess(TRUE);
while (variable_get(VAR_HTTP_HOST) == NULL) {
if (DITEM_STATUS(mediaSetHTTP(NULL)) == DITEM_FAILURE)
return FALSE;
checkAccess(TRUE);
}
again:
/* If the release is specified as "__RELEASE" or "any", then just
* assume that the path the user gave is ok.
*/
rel = variable_get(VAR_RELNAME);
/*
msgConfirm("rel: -%s-", rel);
*/
if (strcmp(rel, "__RELEASE") && strcmp(rel, "any")) {
for (fdir = 0; ftp_dirs[fdir]; fdir++) {
sprintf(req, "%s/%s/%s", variable_get(VAR_FTP_PATH),
ftp_dirs[fdir], rel);
variable_set2(VAR_HTTP_PATH, req, 0);
if (checkAccess(FALSE)) {
found = TRUE;
break;
}
}
} else {
variable_set2(VAR_HTTP_PATH, variable_get(VAR_FTP_PATH), 0);
found = checkAccess(FALSE);
}
if (!found) {
msgConfirm("No such directory: %s\n"
"please check the URL and try again.", variable_get(VAR_HTTP_PATH));
variable_unset(VAR_HTTP_PATH);
dialog_clear_norefresh();
clear();
if (DITEM_STATUS(mediaSetHTTP(NULL)) != DITEM_FAILURE) goto again;
}
return found;
}
FILE *
mediaGetHTTP(Device *dev, char *file, Boolean probe)
{
FILE *fp;
int rv, s, af;
bool el; /* end of header line */
char *cp, buf[PATH_MAX], req[BUFSIZ];
struct addrinfo hints, *res, *res0;
af = variable_cmp(VAR_IPV6_ENABLE, "YES") ? AF_INET : AF_UNSPEC;
memset(&hints, 0, sizeof(hints));
hints.ai_family = af;
hints.ai_socktype = SOCK_STREAM;
hints.ai_protocol = 0;
if ((rv = getaddrinfo(variable_get(VAR_HTTP_HOST),
variable_get(VAR_HTTP_PORT), &hints, &res0)) != 0) {
msgConfirm("%s", gai_strerror(rv));
return NULL;
}
s = -1;
for (res = res0; res; res = res->ai_next) {
if ((s = socket(res->ai_family, res->ai_socktype,
res->ai_protocol)) < 0)
continue;
if (connect(s, res->ai_addr, res->ai_addrlen) >= 0)
break;
close(s);
s = -1;
}
freeaddrinfo(res0);
if (s == -1) {
msgConfirm("Couldn't connect to proxy %s:%s",
variable_get(VAR_HTTP_HOST),variable_get(VAR_HTTP_PORT));
return NULL;
}
sprintf(req,"GET %s/%s%s HTTP/1.0\r\n\r\n",
variable_get(VAR_HTTP_PATH), file, variable_get(VAR_HTTP_FTP_MODE));
if (isDebug()) {
msgDebug("sending http request: %s\n",req);
}
write(s,req,strlen(req));
/*
* scan the headers of the response
* this is extremely quick'n dirty
*
*/
cp=buf;
el=FALSE;
rv=read(s,cp,1);
while (rv>0) {
if ((*cp == '\012') && el) {
/* reached end of a header line */
if (!strncmp(buf,"HTTP",4)) {
rv=strtol((char *)(buf+9),0,0);
*(cp-1)='\0'; /* chop the CRLF off */
if (probe && (rv != 200)) {
return NULL;
} else if (rv >= 500) {
msgConfirm("Server error %s when sending %s, you could try an other server",buf, req);
return NULL;
} else if (rv == 404) {
msgConfirm("%s was not found, maybe directory or release-version are wrong?",req);
return NULL;
} else if (rv >= 400) {
msgConfirm("Client error %s, you could try an other server",buf);
return NULL;
} else if (rv >= 300) {
msgConfirm("Error %s,",buf);
return NULL;
} else if (rv != 200) {
msgConfirm("Error %s when sending %s, you could try an other server",buf, req);
return NULL;
}
}
/* ignore other headers */
/* check for "\015\012" at beginning of line, i.e. end of headers */
if ((cp-buf) == 1)
break;
cp=buf;
rv=read(s,cp,1);
} else {
el=FALSE;
if (*cp == '\015')
el=TRUE;
cp++;
rv=read(s,cp,1);
}
}
fp=fdopen(s,"r");
return fp;
}