| /* ==================================================================== |
| * The Apache Software License, Version 1.1 |
| * |
| * Copyright (c) 2001 The Apache Software Foundation. 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. |
| * |
| * 3. The end-user documentation included with the redistribution, |
| * if any, must include the following acknowledgment: |
| * "This product includes software developed by the |
| * Apache Software Foundation (http://www.apache.org/)." |
| * Alternately, this acknowledgment may appear in the software itself, |
| * if and wherever such third-party acknowledgments normally appear. |
| * |
| * 4. The names "Apache" and "Apache Software Foundation" must |
| * not be used to endorse or promote products derived from this |
| * software without prior written permission. For written |
| * permission, please contact apache@apache.org. |
| * |
| * 5. Products derived from this software may not be called "Apache", |
| * nor may "Apache" appear in their name, without prior written |
| * permission of the Apache Software Foundation. |
| * |
| * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 APACHE SOFTWARE FOUNDATION OR |
| * ITS 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, 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. |
| * ==================================================================== |
| * |
| * This software consists of voluntary contributions made by many |
| * individuals on behalf of the Apache Software Foundation. For more |
| * information on the Apache Software Foundation, please see |
| * <http://www.apache.org/>. |
| */ |
| |
| #include <string.h> |
| #include <stdlib.h> |
| |
| #include "config.h" |
| #include "flood_net.h" |
| #include "flood_net_ssl.h" |
| #include "flood_socket_keepalive.h" |
| |
| typedef struct { |
| void *s; |
| apr_pollfd_t *p; |
| int reopen_socket; /* A boolean */ |
| int wantresponse; /* A boolean */ |
| int ssl; /* A boolean */ |
| } keepalive_socket_t; |
| |
| /** |
| * Keep-alive implementation for socket_init. |
| */ |
| apr_status_t keepalive_socket_init(socket_t **sock, apr_pool_t *pool) |
| { |
| keepalive_socket_t *new_ksock; |
| |
| new_ksock = (keepalive_socket_t *)apr_palloc(pool, sizeof(keepalive_socket_t)); |
| if (new_ksock == NULL) |
| return APR_ENOMEM; |
| new_ksock->s = NULL; |
| new_ksock->p = NULL; |
| new_ksock->reopen_socket = 1; |
| new_ksock->wantresponse = 1; |
| new_ksock->ssl = 0; |
| |
| *sock = new_ksock; |
| return APR_SUCCESS; |
| } |
| |
| /** |
| * Keep-alive implementation for begin_conn. |
| */ |
| apr_status_t keepalive_begin_conn(socket_t *sock, request_t *req, apr_pool_t *pool) |
| { |
| keepalive_socket_t *ksock = (keepalive_socket_t *)sock; |
| |
| if (ksock->reopen_socket || ksock->s == NULL) { |
| if (strcasecmp(req->parsed_uri->scheme, "https") == 0) |
| ksock->ssl = 1; |
| else |
| ksock->ssl = 0; |
| |
| /* The return types are not identical, so it can't be a ternary |
| * operation. */ |
| if (ksock->ssl) |
| ksock->s = ssl_open_socket(pool, req); |
| else |
| ksock->s = open_socket(pool, req); |
| |
| if (ksock->s == NULL) |
| return APR_EGENERAL; |
| |
| ksock->reopen_socket = 0; /* we just opened it */ |
| } |
| req->keepalive = 1; |
| return APR_SUCCESS; |
| } |
| |
| /** |
| * Keep-alive implementation for send_req. |
| */ |
| apr_status_t keepalive_send_req(socket_t *sock, request_t *req, apr_pool_t *pool) |
| { |
| keepalive_socket_t *ksock = (keepalive_socket_t *)sock; |
| ksock->wantresponse = req->wantresponse; |
| return ksock->ssl ? ssl_write_socket(ksock->s, req) : |
| write_socket(ksock->s, req); |
| } |
| |
| static apr_status_t keepalive_load_resp(response_t *resp, |
| keepalive_socket_t *sock, |
| apr_size_t remaining, apr_pool_t *pool) |
| { |
| /* Ugh, we want everything. */ |
| int currentalloc, remain, i; |
| char *cp, *op, b[MAX_DOC_LENGTH]; |
| apr_status_t status; |
| |
| if (remaining > 0) |
| { |
| remain = 1; |
| currentalloc = remaining + resp->rbufsize; |
| } |
| else |
| { |
| remain = 0; |
| currentalloc = MAX_DOC_LENGTH + resp->rbufsize; |
| } |
| |
| cp = apr_palloc(pool, currentalloc); |
| memcpy(cp, resp->rbuf, resp->rbufsize); |
| resp->rbuf = cp; |
| cp = resp->rbuf + resp->rbufsize; |
| |
| do |
| { |
| if (!remain) |
| i = MAX_DOC_LENGTH - 1; |
| else |
| { |
| if (remaining > MAX_DOC_LENGTH - 1) |
| i = MAX_DOC_LENGTH - 1; |
| else |
| i = remaining; |
| } |
| |
| status = sock->ssl ? ssl_read_socket(sock->s, b, &i) : |
| read_socket(sock->s, b, &i); |
| if (resp->rbufsize + i > currentalloc) |
| { |
| /* You can think why this always work. */ |
| currentalloc *= 2; |
| op = resp->rbuf; |
| resp->rbuf = apr_palloc(pool, currentalloc); |
| memcpy(resp->rbuf, op, cp - op); |
| cp = resp->rbuf + (cp - op); |
| } |
| |
| memcpy(cp, b, i); |
| resp->rbufsize += i; |
| cp += i; |
| remaining -= i; |
| } |
| while (status != APR_EGENERAL && status != APR_EOF && status != APR_TIMEUP && (!remain || remaining)); |
| |
| return status; |
| } |
| |
| /** |
| * Keep-alive implementation for recv_resp. |
| */ |
| apr_status_t keepalive_recv_resp(response_t **resp, socket_t *sock, apr_pool_t *pool) |
| { |
| keepalive_socket_t *ksock = (keepalive_socket_t *)sock; |
| char b[MAX_DOC_LENGTH], *cl, *ecl, cls[17]; |
| int i; |
| response_t *new_resp; |
| apr_status_t status; |
| long content_length; |
| |
| new_resp = apr_pcalloc(pool, sizeof(response_t)); |
| new_resp->rbuftype = POOL; |
| new_resp->rbufsize = MAX_DOC_LENGTH - 1; |
| new_resp->rbuf = apr_pcalloc(pool, new_resp->rbufsize); |
| |
| status = ksock->ssl ? |
| ssl_read_socket(ksock->s, new_resp->rbuf, &new_resp->rbufsize) : |
| read_socket(ksock->s, new_resp->rbuf, &new_resp->rbufsize); |
| |
| if (status != APR_SUCCESS && status != APR_EOF) { |
| return status; |
| } |
| |
| /* FIXME: Deal with chunking, too */ |
| /* FIXME: Assume we got the full header for now. */ |
| |
| /* If this exists, we aren't keepalive anymore. */ |
| cl = strstr(new_resp->rbuf, "Connection: Close"); |
| if (cl) |
| new_resp->keepalive = 0; |
| else |
| { |
| new_resp->keepalive = 1; |
| |
| cl = strstr(new_resp->rbuf, "Content-Length: "); |
| if (!cl) |
| { |
| /* Netscape sends this. It is technically correct as the header |
| * may be mixed-case - we should be case-insensitive. But, |
| * that gets mighty expensive. */ |
| cl = strstr(new_resp->rbuf, "Content-length: "); |
| if (!cl) |
| new_resp->keepalive = 0; |
| } |
| |
| if (cl) |
| { |
| cl += sizeof("Content-Length: ") - 1; |
| ecl = strstr(cl, CRLF); |
| if (ecl && ecl - cl < 16) |
| { |
| strncpy(cls, cl, ecl - cl); |
| cls[ecl-cl] = '\0'; |
| content_length = strtol(cls, &ecl, 10); |
| if (*ecl != '\0') |
| new_resp->keepalive = 0; |
| } |
| } |
| |
| if (new_resp->keepalive) |
| { |
| /* Find where we ended */ |
| ecl = strstr(new_resp->rbuf, CRLF CRLF); |
| |
| /* We didn't get full headers. Crap. */ |
| if (!ecl) |
| new_resp->keepalive = 0; |
| { |
| ecl += sizeof(CRLF CRLF) - 1; |
| content_length -= new_resp->rbufsize - (ecl - (char*)new_resp->rbuf); |
| } |
| } |
| } |
| |
| if (ksock->wantresponse) |
| { |
| if (new_resp->keepalive) |
| status = keepalive_load_resp(new_resp, ksock, content_length, pool); |
| else |
| status = keepalive_load_resp(new_resp, ksock, 0, pool); |
| } |
| else |
| { |
| if (new_resp->keepalive) |
| { |
| while (content_length && status != APR_EGENERAL && |
| status != APR_EOF && status != APR_TIMEUP) { |
| if (content_length > MAX_DOC_LENGTH - 1) |
| i = MAX_DOC_LENGTH - 1; |
| else |
| i = content_length; |
| |
| status = ksock->ssl ? ssl_read_socket(ksock->s, b, &i) : |
| read_socket(ksock->s, b, &i); |
| |
| content_length -= i; |
| } |
| } |
| else |
| { |
| while (status != APR_EGENERAL && status != APR_EOF && |
| status != APR_TIMEUP) { |
| i = MAX_DOC_LENGTH - 1; |
| status = ksock->ssl ? ssl_read_socket(ksock->s, b, &i) : |
| read_socket(ksock->s, b, &i); |
| } |
| } |
| } |
| |
| *resp = new_resp; |
| |
| return APR_SUCCESS; |
| } |
| |
| /** |
| * Keep-alive implementation for end_conn. |
| */ |
| apr_status_t keepalive_end_conn(socket_t *sock, request_t *req, response_t *resp) |
| { |
| keepalive_socket_t *ksock = (keepalive_socket_t *)sock; |
| |
| if (resp->keepalive == 0) { |
| ksock->ssl ? ssl_close_socket(ksock->s) : close_socket(ksock->s); |
| ksock->reopen_socket = 1; /* we just closed it */ |
| } |
| |
| return APR_SUCCESS; |
| } |
| |
| apr_status_t keepalive_socket_destroy(socket_t *sock) |
| { |
| return APR_SUCCESS; |
| } |
