util_ebcdic.c

Apache HTTP Server 是一个功能强大的灵活的与HTTP/1.1相兼容的web服务器.这里给出的是Apache HTTP服务器的源码。

/* Copyright 2000-2005 The Apache Software Foundation or its licensors, as
 * applicable.
 *
 * Licensed 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.
 */

#include "ap_config.h"

#if APR_CHARSET_EBCDIC

#include "apr_strings.h"
#include "httpd.h"
#include "http_log.h"
#include "http_core.h"
#include "util_ebcdic.h"

apr_status_t ap_init_ebcdic(apr_pool_t *pool)
{
    apr_status_t rv;
    char buf[80];

    rv = apr_xlate_open(&ap_hdrs_to_ascii, "ISO8859-1", APR_DEFAULT_CHARSET, pool);
    if (rv) {
        ap_log_error(APLOG_MARK, APLOG_ERR, rv, NULL,
                     "apr_xlate_open() failed");
        return rv;
    }

    rv = apr_xlate_open(&ap_hdrs_from_ascii, APR_DEFAULT_CHARSET, "ISO8859-1", pool);
    if (rv) {
        ap_log_error(APLOG_MARK, APLOG_ERR, rv, NULL,
                     "apr_xlate_open() failed");
        return rv;
    }

    rv = apr_xlate_open(&ap_locale_to_ascii, "ISO8859-1", APR_LOCALE_CHARSET, pool);
    if (rv) {
        ap_log_error(APLOG_MARK, APLOG_ERR, rv, NULL,
                     "apr_xlate_open() failed");
        return rv;
    }

    rv = apr_xlate_open(&ap_locale_from_ascii, APR_LOCALE_CHARSET, "ISO8859-1", pool);
    if (rv) {
        ap_log_error(APLOG_MARK, APLOG_ERR, rv, NULL,
                     "apr_xlate_open() failed");
        return rv;
    }

    rv = apr_MD5InitEBCDIC(ap_hdrs_to_ascii);
    if (rv) {
        ap_log_error(APLOG_MARK, APLOG_ERR, rv, NULL,
                     "apr_MD5InitEBCDIC() failed");
        return rv;
    }
    
    rv = apr_base64init_ebcdic(ap_hdrs_to_ascii, ap_hdrs_from_ascii);
    if (rv) {
        ap_log_error(APLOG_MARK, APLOG_ERR, rv, NULL,
                     "apr_base64init_ebcdic() failed");
        return rv;
    }
    
    rv = apr_SHA1InitEBCDIC(ap_hdrs_to_ascii);
    if (rv) {
        ap_log_error(APLOG_MARK, APLOG_ERR, rv, NULL,
                     "apr_SHA1InitEBCDIC() failed");
        return rv;
    }
    
    return APR_SUCCESS;
}

void ap_xlate_proto_to_ascii(char *buffer, apr_size_t len)
{
    apr_size_t inbytes_left, outbytes_left;

    inbytes_left = outbytes_left = len;
    apr_xlate_conv_buffer(ap_hdrs_to_ascii, buffer, &inbytes_left,
                          buffer, &outbytes_left);
}

void ap_xlate_proto_from_ascii(char *buffer, apr_size_t len)
{
    apr_size_t inbytes_left, outbytes_left;

    inbytes_left = outbytes_left = len;
    apr_xlate_conv_buffer(ap_hdrs_from_ascii, buffer, &inbytes_left,
                          buffer, &outbytes_left);
}

int ap_rvputs_proto_in_ascii(request_rec *r, ...)
{
    va_list va;
    const char *s;
    char *ascii_s;
    apr_size_t len;
    apr_size_t written = 0;

    va_start(va, r);
    while (1) {
        s = va_arg(va, const char *);
        if (s == NULL)
            break;
        len = strlen(s);
        ascii_s = apr_pstrndup(r->pool, s, len);
        ap_xlate_proto_to_ascii(ascii_s, len);
        if (ap_rputs(ascii_s, r) < 0)
            return -1;
        written += len;
    }
    va_end(va);
 
    return written;
}    
#endif /* APR_CHARSET_EBCDIC */