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333 lines
9.6 KiB
333 lines
9.6 KiB
/***************************************************************************
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* _ _ ____ _
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* Project ___| | | | _ \| |
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* / __| | | | |_) | |
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* | (__| |_| | _ <| |___
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* \___|\___/|_| \_\_____|
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*
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* Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel@haxx.se>, et al.
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*
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* This software is licensed as described in the file COPYING, which
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* you should have received as part of this distribution. The terms
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* are also available at https://curl.haxx.se/docs/copyright.html.
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*
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* You may opt to use, copy, modify, merge, publish, distribute and/or sell
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* copies of the Software, and permit persons to whom the Software is
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* furnished to do so, under the terms of the COPYING file.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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***************************************************************************/
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#include "curl_setup.h"
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#ifdef CURL_DOES_CONVERSIONS
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#include <curl/curl.h>
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#include "non-ascii.h"
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#include "formdata.h"
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#include "sendf.h"
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#include "urldata.h"
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#include "multiif.h"
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#include "curl_memory.h"
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/* The last #include file should be: */
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#include "memdebug.h"
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#ifdef HAVE_ICONV
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#include <iconv.h>
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/* set default codesets for iconv */
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#ifndef CURL_ICONV_CODESET_OF_NETWORK
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#define CURL_ICONV_CODESET_OF_NETWORK "ISO8859-1"
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#endif
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#ifndef CURL_ICONV_CODESET_FOR_UTF8
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#define CURL_ICONV_CODESET_FOR_UTF8 "UTF-8"
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#endif
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#define ICONV_ERROR (size_t)-1
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#endif /* HAVE_ICONV */
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/*
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* Curl_convert_clone() returns a malloced copy of the source string (if
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* returning CURLE_OK), with the data converted to network format.
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*/
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CURLcode Curl_convert_clone(struct Curl_easy *data,
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const char *indata,
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size_t insize,
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char **outbuf)
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{
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char *convbuf;
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CURLcode result;
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convbuf = malloc(insize);
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if(!convbuf)
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return CURLE_OUT_OF_MEMORY;
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memcpy(convbuf, indata, insize);
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result = Curl_convert_to_network(data, convbuf, insize);
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if(result) {
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free(convbuf);
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return result;
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}
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*outbuf = convbuf; /* return the converted buffer */
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return CURLE_OK;
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}
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/*
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* Curl_convert_to_network() is an internal function for performing ASCII
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* conversions on non-ASCII platforms. It convers the buffer _in place_.
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*/
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CURLcode Curl_convert_to_network(struct Curl_easy *data,
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char *buffer, size_t length)
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{
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if(data && data->set.convtonetwork) {
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/* use translation callback */
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CURLcode result;
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Curl_set_in_callback(data, true);
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result = data->set.convtonetwork(buffer, length);
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Curl_set_in_callback(data, false);
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if(result) {
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failf(data,
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"CURLOPT_CONV_TO_NETWORK_FUNCTION callback returned %d: %s",
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(int)result, curl_easy_strerror(result));
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}
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return result;
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}
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else {
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#ifdef HAVE_ICONV
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/* do the translation ourselves */
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iconv_t tmpcd = (iconv_t) -1;
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iconv_t *cd = &tmpcd;
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char *input_ptr, *output_ptr;
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size_t in_bytes, out_bytes, rc;
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/* open an iconv conversion descriptor if necessary */
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if(data)
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cd = &data->outbound_cd;
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if(*cd == (iconv_t)-1) {
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*cd = iconv_open(CURL_ICONV_CODESET_OF_NETWORK,
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CURL_ICONV_CODESET_OF_HOST);
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if(*cd == (iconv_t)-1) {
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failf(data,
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"The iconv_open(\"%s\", \"%s\") call failed with errno %i: %s",
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CURL_ICONV_CODESET_OF_NETWORK,
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CURL_ICONV_CODESET_OF_HOST,
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errno, strerror(errno));
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return CURLE_CONV_FAILED;
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}
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}
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/* call iconv */
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input_ptr = output_ptr = buffer;
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in_bytes = out_bytes = length;
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rc = iconv(*cd, &input_ptr, &in_bytes,
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&output_ptr, &out_bytes);
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if(!data)
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iconv_close(tmpcd);
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if((rc == ICONV_ERROR) || (in_bytes != 0)) {
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failf(data,
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"The Curl_convert_to_network iconv call failed with errno %i: %s",
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errno, strerror(errno));
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return CURLE_CONV_FAILED;
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}
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#else
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failf(data, "CURLOPT_CONV_TO_NETWORK_FUNCTION callback required");
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return CURLE_CONV_REQD;
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#endif /* HAVE_ICONV */
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}
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return CURLE_OK;
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}
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/*
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* Curl_convert_from_network() is an internal function for performing ASCII
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* conversions on non-ASCII platforms. It convers the buffer _in place_.
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*/
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CURLcode Curl_convert_from_network(struct Curl_easy *data,
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char *buffer, size_t length)
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{
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if(data && data->set.convfromnetwork) {
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/* use translation callback */
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CURLcode result;
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Curl_set_in_callback(data, true);
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result = data->set.convfromnetwork(buffer, length);
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Curl_set_in_callback(data, false);
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if(result) {
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failf(data,
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"CURLOPT_CONV_FROM_NETWORK_FUNCTION callback returned %d: %s",
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(int)result, curl_easy_strerror(result));
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}
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return result;
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}
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else {
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#ifdef HAVE_ICONV
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/* do the translation ourselves */
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iconv_t tmpcd = (iconv_t) -1;
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iconv_t *cd = &tmpcd;
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char *input_ptr, *output_ptr;
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size_t in_bytes, out_bytes, rc;
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/* open an iconv conversion descriptor if necessary */
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if(data)
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cd = &data->inbound_cd;
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if(*cd == (iconv_t)-1) {
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*cd = iconv_open(CURL_ICONV_CODESET_OF_HOST,
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CURL_ICONV_CODESET_OF_NETWORK);
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if(*cd == (iconv_t)-1) {
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failf(data,
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"The iconv_open(\"%s\", \"%s\") call failed with errno %i: %s",
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CURL_ICONV_CODESET_OF_HOST,
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CURL_ICONV_CODESET_OF_NETWORK,
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errno, strerror(errno));
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return CURLE_CONV_FAILED;
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}
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}
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/* call iconv */
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input_ptr = output_ptr = buffer;
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in_bytes = out_bytes = length;
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rc = iconv(*cd, &input_ptr, &in_bytes,
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&output_ptr, &out_bytes);
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if(!data)
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iconv_close(tmpcd);
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if((rc == ICONV_ERROR) || (in_bytes != 0)) {
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failf(data,
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"Curl_convert_from_network iconv call failed with errno %i: %s",
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errno, strerror(errno));
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return CURLE_CONV_FAILED;
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}
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#else
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failf(data, "CURLOPT_CONV_FROM_NETWORK_FUNCTION callback required");
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return CURLE_CONV_REQD;
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#endif /* HAVE_ICONV */
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}
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return CURLE_OK;
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}
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/*
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* Curl_convert_from_utf8() is an internal function for performing UTF-8
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* conversions on non-ASCII platforms.
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*/
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CURLcode Curl_convert_from_utf8(struct Curl_easy *data,
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char *buffer, size_t length)
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{
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if(data && data->set.convfromutf8) {
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/* use translation callback */
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CURLcode result;
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Curl_set_in_callback(data, true);
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result = data->set.convfromutf8(buffer, length);
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Curl_set_in_callback(data, false);
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if(result) {
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failf(data,
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"CURLOPT_CONV_FROM_UTF8_FUNCTION callback returned %d: %s",
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(int)result, curl_easy_strerror(result));
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}
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return result;
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}
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else {
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#ifdef HAVE_ICONV
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/* do the translation ourselves */
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iconv_t tmpcd = (iconv_t) -1;
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iconv_t *cd = &tmpcd;
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char *input_ptr;
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char *output_ptr;
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size_t in_bytes, out_bytes, rc;
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/* open an iconv conversion descriptor if necessary */
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if(data)
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cd = &data->utf8_cd;
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if(*cd == (iconv_t)-1) {
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*cd = iconv_open(CURL_ICONV_CODESET_OF_HOST,
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CURL_ICONV_CODESET_FOR_UTF8);
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if(*cd == (iconv_t)-1) {
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failf(data,
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"The iconv_open(\"%s\", \"%s\") call failed with errno %i: %s",
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CURL_ICONV_CODESET_OF_HOST,
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CURL_ICONV_CODESET_FOR_UTF8,
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errno, strerror(errno));
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return CURLE_CONV_FAILED;
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}
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}
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/* call iconv */
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input_ptr = output_ptr = buffer;
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in_bytes = out_bytes = length;
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rc = iconv(*cd, &input_ptr, &in_bytes,
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&output_ptr, &out_bytes);
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if(!data)
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iconv_close(tmpcd);
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if((rc == ICONV_ERROR) || (in_bytes != 0)) {
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failf(data,
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"The Curl_convert_from_utf8 iconv call failed with errno %i: %s",
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errno, strerror(errno));
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return CURLE_CONV_FAILED;
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}
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if(output_ptr < input_ptr) {
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/* null terminate the now shorter output string */
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*output_ptr = 0x00;
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}
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#else
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failf(data, "CURLOPT_CONV_FROM_UTF8_FUNCTION callback required");
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return CURLE_CONV_REQD;
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#endif /* HAVE_ICONV */
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}
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return CURLE_OK;
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}
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/*
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* Init conversion stuff for a Curl_easy
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*/
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void Curl_convert_init(struct Curl_easy *data)
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{
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#if defined(CURL_DOES_CONVERSIONS) && defined(HAVE_ICONV)
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/* conversion descriptors for iconv calls */
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data->outbound_cd = (iconv_t)-1;
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data->inbound_cd = (iconv_t)-1;
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data->utf8_cd = (iconv_t)-1;
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#else
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(void)data;
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#endif /* CURL_DOES_CONVERSIONS && HAVE_ICONV */
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}
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/*
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* Setup conversion stuff for a Curl_easy
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*/
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void Curl_convert_setup(struct Curl_easy *data)
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{
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data->inbound_cd = iconv_open(CURL_ICONV_CODESET_OF_HOST,
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CURL_ICONV_CODESET_OF_NETWORK);
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data->outbound_cd = iconv_open(CURL_ICONV_CODESET_OF_NETWORK,
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CURL_ICONV_CODESET_OF_HOST);
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data->utf8_cd = iconv_open(CURL_ICONV_CODESET_OF_HOST,
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CURL_ICONV_CODESET_FOR_UTF8);
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}
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/*
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* Close conversion stuff for a Curl_easy
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*/
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void Curl_convert_close(struct Curl_easy *data)
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{
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#ifdef HAVE_ICONV
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/* close iconv conversion descriptors */
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if(data->inbound_cd != (iconv_t)-1) {
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iconv_close(data->inbound_cd);
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}
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if(data->outbound_cd != (iconv_t)-1) {
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iconv_close(data->outbound_cd);
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}
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if(data->utf8_cd != (iconv_t)-1) {
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iconv_close(data->utf8_cd);
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}
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#else
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(void)data;
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#endif /* HAVE_ICONV */
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}
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#endif /* CURL_DOES_CONVERSIONS */
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