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/* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* Originally developed by Aaron Bannert and Justin Erenkrantz, eBuilt.
*/
#include <apr.h>
#if APR_HAVE_STDLIB_H
#include <stdlib.h> /* rand/strtol */
#endif
#if APR_HAVE_STRING_H
#include <string.h>
#endif
#include "config.h"
#include "flood_net.h"
#include "flood_net_ssl.h"
#include "flood_socket_generic.h"
typedef struct {
void *s;
int wantresponse; /* A boolean */
int ssl; /* A boolean */
} generic_socket_t;
apr_status_t generic_socket_init(socket_t **sock, apr_pool_t *pool)
{
generic_socket_t *new_gsock;
new_gsock = (generic_socket_t *)apr_palloc(pool, sizeof(generic_socket_t));
if (new_gsock == NULL)
return APR_ENOMEM;
new_gsock->s = NULL;
*sock = new_gsock;
return APR_SUCCESS;
}
/**
* Generic implementation for begin_conn
*/
apr_status_t generic_begin_conn(socket_t *sock, request_t *req, apr_pool_t *pool)
{
apr_status_t rv;
generic_socket_t *gsock = (generic_socket_t *)sock;
if (strcasecmp(req->parsed_uri->scheme, "https") == 0) {
/* If we don't have SSL, error out. */
#if FLOOD_HAS_OPENSSL
gsock->ssl = 1;
#else
return APR_ENOTIMPL;
#endif
}
else {
gsock->ssl = 0;
}
/* The return types are not identical, so it can't be a ternary
* operation. */
if (gsock->ssl)
gsock->s = ssl_open_socket(pool, req, &rv);
else
gsock->s = open_socket(pool, req, &rv);
if (gsock->s == NULL)
return rv;
req->keepalive = 0; /* FIXME: Maybe move this into flood_socket_t */
return APR_SUCCESS;
}
/**
* Generic implementation for send_req.
*/
apr_status_t generic_send_req(socket_t *sock, request_t *req, apr_pool_t *pool)
{
generic_socket_t *gsock = (generic_socket_t *)sock;
gsock->wantresponse = req->wantresponse;
return gsock->ssl ? ssl_write_socket(gsock->s, req) :
write_socket(gsock->s, req);
}
/**
* Generic implementation for recv_resp.
*/
apr_status_t generic_recv_resp(response_t **resp, socket_t *sock, apr_pool_t *pool)
{
char b[MAX_DOC_LENGTH];
apr_size_t i;
response_t *new_resp;
apr_status_t status;
generic_socket_t *gsock = (generic_socket_t *)sock;
new_resp = apr_pcalloc(pool, sizeof(response_t));
new_resp->rbuftype = POOL;
if (gsock->wantresponse)
{
/* Ugh, we want everything. */
apr_size_t currentalloc;
char *cp, *op;
new_resp->rbufsize = 0;
currentalloc = MAX_DOC_LENGTH;
new_resp->rbuf = apr_palloc(pool, currentalloc);
cp = new_resp->rbuf;
do
{
i = MAX_DOC_LENGTH - 1;
status = gsock->ssl ? ssl_read_socket(gsock->s, b, &i)
: read_socket(gsock->s, b, &i);
if (new_resp->rbufsize + i > currentalloc)
{
/* You can think why this always work. */
currentalloc *= 2;
op = new_resp->rbuf;
new_resp->rbuf = apr_palloc(pool, currentalloc);
memcpy(new_resp->rbuf, op, cp - op);
cp = new_resp->rbuf + (cp - op);
}
memcpy(cp, b, i);
new_resp->rbufsize += i;
cp += i;
}
while (status != APR_EOF && status != APR_TIMEUP);
}
else
{
/* We just want to store the first chunk read. */
new_resp->rbufsize = MAX_DOC_LENGTH - 1;
new_resp->rbuf = apr_palloc(pool, new_resp->rbufsize);
status = gsock->ssl ? ssl_read_socket(gsock->s, new_resp->rbuf,
&new_resp->rbufsize) :
read_socket(gsock->s, new_resp->rbuf,
&new_resp->rbufsize);
while (status != APR_EOF && status != APR_TIMEUP) {
i = MAX_DOC_LENGTH - 1;
status = gsock->ssl ? ssl_read_socket(gsock->s, b, &i) :
read_socket(gsock->s, b, &i);
}
if (status != APR_SUCCESS && status != APR_EOF) {
return status;
}
}
*resp = new_resp;
return APR_SUCCESS;
}
/**
* This implementation always retrieves the full response.
* We temporarily set the "wantresponse" flag to true and
* call generic_recv_resp() to do the real work.
*/
apr_status_t generic_fullresp_recv_resp(response_t **resp,
socket_t *sock,
apr_pool_t *pool)
{
generic_socket_t *gsock = (generic_socket_t *)sock;
int orig_wantresponse = gsock->wantresponse;
apr_status_t status;
gsock->wantresponse = 1;
status = generic_recv_resp(resp, sock, pool);
gsock->wantresponse = orig_wantresponse;
return status;
}
/**
* Generic implementation for end_conn.
*/
apr_status_t generic_end_conn(socket_t *sock, request_t *req, response_t *resp)
{
generic_socket_t *gsock = (generic_socket_t *)sock;
gsock->ssl ? ssl_close_socket(gsock->s) : close_socket(gsock->s);
return APR_SUCCESS;
}
/**
* Generic implementation for socket_destroy.
*/
apr_status_t generic_socket_destroy(socket_t *socket)
{
/* The socket is closed after each request (generic doesn't
* support keepalive), so there's nothing to do here */
return APR_SUCCESS;
}