1 /* ====================================================================
2 * The Apache Software License, Version 1.1
4 * Copyright (c) 2000 The Apache Software Foundation. All rights
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in
16 * the documentation and/or other materials provided with the
19 * 3. The end-user documentation included with the redistribution,
20 * if any, must include the following acknowledgment:
21 * "This product includes software developed by the
22 * Apache Software Foundation (http://www.apache.org/)."
23 * Alternately, this acknowledgment may appear in the software itself,
24 * if and wherever such third-party acknowledgments normally appear.
26 * 4. The names "Apache" and "Apache Software Foundation" must
27 * not be used to endorse or promote products derived from this
28 * software without prior written permission. For written
29 * permission, please contact apache@apache.org.
31 * 5. Products derived from this software may not be called "Apache",
32 * nor may "Apache" appear in their name, without prior written
33 * permission of the Apache Software Foundation.
35 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
36 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
37 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
38 * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
39 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
40 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
41 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
42 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
43 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
44 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
45 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
47 * ====================================================================
49 * This software consists of voluntary contributions made by many
50 * individuals on behalf of the Apache Software Foundation. For more
51 * information on the Apache Software Foundation, please see
52 * <http://www.apache.org/>.
54 * Portions of this software are based upon public domain software
55 * originally written at the National Center for Supercomputing Applications,
56 * University of Illinois, Urbana-Champaign.
59 #include "ap_config.h"
65 #include "http_core.h"
66 #include "util_ebcdic.h"
68 ap_xlate_t *ap_hdrs_to_ascii, *ap_hdrs_from_ascii;
69 ap_xlate_t *ap_locale_to_ascii, *ap_locale_from_ascii;
71 ap_status_t ap_init_ebcdic(ap_pool_t *pool)
76 rv = ap_xlate_open(&ap_hdrs_to_ascii, "ISO8859-1", APR_DEFAULT_CHARSET, pool);
78 ap_log_error(APLOG_MARK, APLOG_ERR, rv, NULL,
79 "ap_xlate_open() failed");
83 rv = ap_xlate_open(&ap_hdrs_from_ascii, APR_DEFAULT_CHARSET, "ISO8859-1", pool);
85 ap_log_error(APLOG_MARK, APLOG_ERR, rv, NULL,
86 "ap_xlate_open() failed");
90 ap_locale_to_ascii = ap_hdrs_to_ascii; /* TODO: "ISO8859-1" to APR_LOCALE_CHARSET */
91 ap_locale_from_ascii = ap_hdrs_from_ascii; /* TODO: APR_LOCALE_CHARSET to "ISO8859-1" */
93 rv = ap_MD5InitEBCDIC(ap_hdrs_to_ascii);
95 ap_log_error(APLOG_MARK, APLOG_ERR, rv, NULL,
96 "ap_MD5InitEBCDIC() failed");
100 rv = ap_base64init_ebcdic(ap_hdrs_to_ascii, ap_hdrs_from_ascii);
102 ap_log_error(APLOG_MARK, APLOG_ERR, rv, NULL,
103 "ap_base64init_ebcdic() failed");
107 rv = ap_SHA1InitEBCDIC(ap_hdrs_to_ascii);
109 ap_log_error(APLOG_MARK, APLOG_ERR, rv, NULL,
110 "ap_SHA1InitEBCDIC() failed");
117 #define ASCIITEXT_MAGIC_TYPE_PREFIX "text/x-ascii-" /* Text files whose content-type starts with this are passed thru unconverted */
119 /* Check the Content-Type to decide if conversion is needed */
120 ap_xlate_t *ap_checkconv(struct request_rec *r)
122 int convert_to_ascii;
124 ap_xlate_t *zero = NULL;
126 /* To make serving of "raw ASCII text" files easy (they serve faster
127 * since they don't have to be converted from EBCDIC), a new
128 * "magic" type prefix was invented: text/x-ascii-{plain,html,...}
129 * If we detect one of these content types here, we simply correct
130 * the type to the real text/{plain,html,...} type. Otherwise, we
131 * set a flag that translation is required later on.
134 type = (r->content_type == NULL) ? ap_default_type(r) : r->content_type;
136 /* If no content type is set then treat it as (ebcdic) text/plain */
137 convert_to_ascii = (type == NULL);
139 /* Conversion is applied to text/ files only, if ever. */
140 if (type && (strncasecmp(type, "text/", 5) == 0 ||
141 strncasecmp(type, "message/", 8) == 0)) {
142 if (strncasecmp(type, ASCIITEXT_MAGIC_TYPE_PREFIX,
143 sizeof(ASCIITEXT_MAGIC_TYPE_PREFIX)-1) == 0)
144 r->content_type = ap_pstrcat(r->pool, "text/",
145 type+sizeof(ASCIITEXT_MAGIC_TYPE_PREFIX)-1,
148 /* translate EBCDIC to ASCII */
149 convert_to_ascii = 1;
151 /* Enable conversion if it's a text document */
152 if (convert_to_ascii) {
153 ap_bsetopt(r->connection->client, BO_WXLATE, &ap_locale_to_ascii);
156 ap_bsetopt(r->connection->client, BO_WXLATE, &zero);
159 return convert_to_ascii ? ap_locale_to_ascii : NULL;
162 #endif /* CHARSET_EBCDIC */