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/***************************************************************************
* _ _ ____ _
* Project ___| | | | _ \| |
* / __| | | | |_) | |
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* Copyright (C) 1998 - 2019, Daniel Stenberg, <daniel@haxx.se>, et al.
*
* This software is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
* are also available at https://curl.se/docs/copyright.html.
*
* You may opt to use, copy, modify, merge, publish, distribute and/or sell
* copies of the Software, and permit persons to whom the Software is
* furnished to do so, under the terms of the COPYING file.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
***************************************************************************/
#include "tool_setup.h"
#ifdef CURL_DOES_CONVERSIONS
#ifdef HAVE_ICONV
# include <iconv.h>
#endif
#include "tool_convert.h"
#include "memdebug.h" /* keep this as LAST include */
#ifdef HAVE_ICONV
/* curl tool iconv conversion descriptors */
static iconv_t inbound_cd = (iconv_t)-1;
static iconv_t outbound_cd = (iconv_t)-1;
/* set default codesets for iconv */
#ifndef CURL_ICONV_CODESET_OF_NETWORK
# define CURL_ICONV_CODESET_OF_NETWORK "ISO8859-1"
#endif
/*
* convert_to_network() is a curl tool function to convert
* from the host encoding to ASCII on non-ASCII platforms.
*/
CURLcode convert_to_network(char *buffer, size_t length)
{
/* translate from the host encoding to the network encoding */
char *input_ptr, *output_ptr;
size_t res, in_bytes, out_bytes;
/* open an iconv conversion descriptor if necessary */
if(outbound_cd == (iconv_t)-1) {
outbound_cd = iconv_open(CURL_ICONV_CODESET_OF_NETWORK,
CURL_ICONV_CODESET_OF_HOST);
if(outbound_cd == (iconv_t)-1) {
return CURLE_CONV_FAILED;
}
}
/* call iconv */
input_ptr = output_ptr = buffer;
in_bytes = out_bytes = length;
res = iconv(outbound_cd, &input_ptr, &in_bytes,
&output_ptr, &out_bytes);
if((res == (size_t)-1) || (in_bytes != 0)) {
return CURLE_CONV_FAILED;
}
return CURLE_OK;
}
/*
* convert_from_network() is a curl tool function
* for performing ASCII conversions on non-ASCII platforms.
*/
CURLcode convert_from_network(char *buffer, size_t length)
{
/* translate from the network encoding to the host encoding */
char *input_ptr, *output_ptr;
size_t res, in_bytes, out_bytes;
/* open an iconv conversion descriptor if necessary */
if(inbound_cd == (iconv_t)-1) {
inbound_cd = iconv_open(CURL_ICONV_CODESET_OF_HOST,
CURL_ICONV_CODESET_OF_NETWORK);
if(inbound_cd == (iconv_t)-1) {
return CURLE_CONV_FAILED;
}
}
/* call iconv */
input_ptr = output_ptr = buffer;
in_bytes = out_bytes = length;
res = iconv(inbound_cd, &input_ptr, &in_bytes,
&output_ptr, &out_bytes);
if((res == (size_t)-1) || (in_bytes != 0)) {
return CURLE_CONV_FAILED;
}
return CURLE_OK;
}
void convert_cleanup(void)
{
/* close iconv conversion descriptors */
if(inbound_cd != (iconv_t)-1)
(void)iconv_close(inbound_cd);
if(outbound_cd != (iconv_t)-1)
(void)iconv_close(outbound_cd);
}
#endif /* HAVE_ICONV */
char convert_char(curl_infotype infotype, char this_char)
{
/* determine how this specific character should be displayed */
switch(infotype) {
case CURLINFO_DATA_IN:
case CURLINFO_DATA_OUT:
case CURLINFO_SSL_DATA_IN:
case CURLINFO_SSL_DATA_OUT:
/* data, treat as ASCII */
if(this_char < 0x20 || this_char >= 0x7f) {
/* non-printable ASCII, use a replacement character */
return UNPRINTABLE_CHAR;
}
/* printable ASCII hex value: convert to host encoding */
(void)convert_from_network(&this_char, 1);
/* FALLTHROUGH */
default:
/* treat as host encoding */
if(ISPRINT(this_char)
&& (this_char != '\t')
&& (this_char != '\r')
&& (this_char != '\n')) {
/* printable characters excluding tabs and line end characters */
return this_char;
}
break;
}
/* non-printable, use a replacement character */
return UNPRINTABLE_CHAR;
}
#endif /* CURL_DOES_CONVERSIONS */
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