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/*
Copyright (C) 2000-2005 SKYRIX Software AG
This file is part of SOPE.
SOPE is free software; you can redistribute it and/or modify it under
the terms of the GNU Lesser General Public License as published by the
Free Software Foundation; either version 2, or (at your option) any
later version.
SOPE 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 Lesser General Public
License for more details.
You should have received a copy of the GNU Lesser General Public
License along with SOPE; see the file COPYING. If not, write to the
Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
02111-1307, USA.
*/
#include <NGObjWeb/WOProxyRequestHandler.h>
#include <NGObjWeb/WOApplication.h>
#include <NGObjWeb/WORequest.h>
#include <NGObjWeb/WOResponse.h>
#include <NGObjWeb/WOHTTPConnection.h>
#include "common.h"
@implementation WOProxyRequestHandler
- (id)initWithHost:(NSString *)_hostName onPort:(unsigned int)_port {
if ((self = [super init])) {
self->client =
[[WOHTTPConnection alloc] initWithHost:_hostName onPort:_port];
self->rewriteHost = YES;
}
return self;
}
- (id)init {
return [self initWithHost:nil onPort:0];
}
- (void)dealloc {
[self->logFilePrefix release];
[self->client release];
[super dealloc];
}
/* settings */
- (void)enableRawLogging {
[self logWithFormat:@"enabling raw logging ..."];
self->rawLogRequest = YES;
self->rawLogResponse = YES;
}
- (void)setLogFilePrefix:(NSString *)_p {
ASSIGNCOPY(self->logFilePrefix, _p);
}
/* logging */
- (void)logMessage:(WOMessage *)_msg prefix:(NSString *)_p
ext:(NSString *)_ext
{
NSEnumerator *keys;
NSString *key;
FILE *fh = NULL;
const unsigned char *s;
if (self->logFilePrefix) {
NSString *fn;
fn = [self->logFilePrefix stringByAppendingFormat:@"%04i.%@",
self->rqcount, _ext];
if ((fh = fopen([fn cString], "w")) == NULL)
[self logWithFormat:@"could not open: %@", fn];
}
if (_p) {
printf("%s", [_p cString]);
if (fh != NULL) fprintf(fh, "%s", [_p cString]);
}
/* headers */
keys = [[_msg headerKeys] objectEnumerator];
while ((key = [keys nextObject])) {
NSEnumerator *vals;
id val;
vals = [[_msg headersForKey:key] objectEnumerator];
while ((val = [vals nextObject]) != NULL) {
s = (unsigned char *)[[val stringValue] cString];
printf("%s: %s\n", [key cString], s);
if (fh != NULL) fprintf(fh, "%s: %s\r\n", [key cString], s);
}
}
/* content */
if ((s = (unsigned char *)[[_msg contentAsString] cString])) {
printf("\n%s\n", s);
if (fh != NULL) fprintf(fh, "\r\n%s", s);
}
else {
printf("\n");
if (fh != NULL) fprintf(fh, "\r\n");
}
if (fh != NULL) fclose(fh);
}
- (void)logRequest:(WORequest *)_rq {
NSString *rl;
printf("PROXY REQUEST:---\n");
rl = [NSString stringWithFormat:@"%@ %@ %@\r\n",
[_rq method], [_rq uri], [_rq httpVersion]];
[self logMessage:_rq prefix:rl ext:@"http"];
printf("---\n");
}
- (void)logResponse:(WOResponse *)_r {
NSString *rl;
printf("PROXY RESPONSE:---\n");
rl = [NSString stringWithFormat:@"%@ %i\r\n", [_r httpVersion], [_r status]];
[self logMessage:_r prefix:rl ext:@"http-rs"];
printf("---\n");
}
/* dispatching */
- (WOResponse *)failedResponse:(NSString *)_txt forRequest:(WORequest *)_rq{
WOResponse *r;
r = [WOResponse responseWithRequest:_rq];
[r setStatus:500];
[r appendContentHTMLString:_txt];
return r;
}
- (WORequest *)fixupRequest:(WORequest *)_request {
return _request;
}
- (WOResponse *)fixupResponse:(WOResponse *)_r {
return _r;
}
- (WORequest *)makeProxyRequest:(WORequest *)_request url:(NSURL *)_url {
/* this is basically a copy with a modified URI ... */
WORequest *rq;
rq = [[WORequest alloc]
initWithMethod:[_request method]
uri:[_url path]
httpVersion:[_request httpVersion]
headers:[_request headers]
content:[_request content]
userInfo:[_request userInfo]];
return [rq autorelease];
}
- (WOResponse *)handleRequest:(WORequest *)_request {
WOHTTPConnection *targetClient;
WOResponse *r;
self->rqcount++;
targetClient = self->client;
_request = [self fixupRequest:_request];
if ([[_request uri] hasPrefix:@"http://"]) {
NSURL *purl;
purl = [NSURL URLWithString:[_request uri]];
[self logWithFormat:@"got a proxy request: %@", purl];
_request = [self makeProxyRequest:_request url:purl];
targetClient = [[WOHTTPConnection alloc] initWithHost:[purl host]
onPort:[[purl port] intValue]];
targetClient = [targetClient autorelease];
}
if (self->rawLogRequest)
[self logRequest:_request];
/* force HTTP/1.0 ... */
[_request setHTTPVersion:@"HTTP/1.0"];
if (![targetClient sendRequest:_request]) {
[self logWithFormat:@"forwarding request to client failed."];
return [self failedResponse:@"forwarding request to client failed."
forRequest:_request];
}
if ((r = [targetClient readResponse]) == nil) {
[self logWithFormat:@"reading response from client failed."];
return [self failedResponse:@"reading response from client failed."
forRequest:_request];
}
r = [self fixupResponse:r];
if (self->rawLogResponse)
[self logResponse:r];
return r;
}
/* logging */
- (NSString *)loggingPrefix {
return @"[proxy-handler]";
}
@end /* WOProxyRequestHandler */
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