mirror of
https://github.com/moparisthebest/curl
synced 2024-10-31 15:45:12 -04:00
0eb3d15ccb
... for the local variable name in functions holding the return code. Using the same name universally makes code easier to read and follow. Also, unify code for checking for CURLcode errors with: if(result) or if(!result) instead of if(result == CURLE_OK), if(CURLE_OK == result) or if(result != CURLE_OK)
344 lines
9.9 KiB
C
344 lines
9.9 KiB
C
/***************************************************************************
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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 - 2014, 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 http://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 "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 SessionHandle *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 SessionHandle *data,
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char *buffer, size_t length)
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{
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CURLcode rc;
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if(data->set.convtonetwork) {
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/* use translation callback */
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rc = data->set.convtonetwork(buffer, length);
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if(rc) {
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failf(data,
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"CURLOPT_CONV_TO_NETWORK_FUNCTION callback returned %d: %s",
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(int)rc, curl_easy_strerror(rc));
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}
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return rc;
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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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char *input_ptr, *output_ptr;
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size_t in_bytes, out_bytes, rc;
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int error;
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/* open an iconv conversion descriptor if necessary */
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if(data->outbound_cd == (iconv_t)-1) {
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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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if(data->outbound_cd == (iconv_t)-1) {
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error = ERRNO;
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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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error, strerror(error));
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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(data->outbound_cd, (const char**)&input_ptr, &in_bytes,
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&output_ptr, &out_bytes);
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if((rc == ICONV_ERROR) || (in_bytes != 0)) {
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error = ERRNO;
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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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error, strerror(error));
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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 SessionHandle *data,
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char *buffer, size_t length)
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{
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CURLcode rc;
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if(data->set.convfromnetwork) {
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/* use translation callback */
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rc = data->set.convfromnetwork(buffer, length);
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if(rc) {
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failf(data,
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"CURLOPT_CONV_FROM_NETWORK_FUNCTION callback returned %d: %s",
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(int)rc, curl_easy_strerror(rc));
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}
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return rc;
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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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char *input_ptr, *output_ptr;
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size_t in_bytes, out_bytes, rc;
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int error;
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/* open an iconv conversion descriptor if necessary */
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if(data->inbound_cd == (iconv_t)-1) {
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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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if(data->inbound_cd == (iconv_t)-1) {
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error = ERRNO;
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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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error, strerror(error));
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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(data->inbound_cd, (const char **)&input_ptr, &in_bytes,
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&output_ptr, &out_bytes);
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if((rc == ICONV_ERROR) || (in_bytes != 0)) {
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error = ERRNO;
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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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error, strerror(error));
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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 SessionHandle *data,
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char *buffer, size_t length)
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{
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CURLcode rc;
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if(data->set.convfromutf8) {
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/* use translation callback */
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rc = data->set.convfromutf8(buffer, length);
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if(rc) {
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failf(data,
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"CURLOPT_CONV_FROM_UTF8_FUNCTION callback returned %d: %s",
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(int)rc, curl_easy_strerror(rc));
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}
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return rc;
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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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const 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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int error;
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/* open an iconv conversion descriptor if necessary */
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if(data->utf8_cd == (iconv_t)-1) {
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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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if(data->utf8_cd == (iconv_t)-1) {
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error = ERRNO;
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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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error, strerror(error));
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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(data->utf8_cd, &input_ptr, &in_bytes,
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&output_ptr, &out_bytes);
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if((rc == ICONV_ERROR) || (in_bytes != 0)) {
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error = ERRNO;
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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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error, strerror(error));
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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 SessionHandle
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*/
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void Curl_convert_init(struct SessionHandle *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 SessionHandle
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*/
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void Curl_convert_setup(struct SessionHandle *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 SessionHandle
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*/
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void Curl_convert_close(struct SessionHandle *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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/*
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* Curl_convert_form() is used from http.c, this converts any form items that
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need to be sent in the network encoding. Returns CURLE_OK on success.
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*/
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CURLcode Curl_convert_form(struct SessionHandle *data, struct FormData *form)
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{
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struct FormData *next;
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CURLcode rc;
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if(!form)
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return CURLE_OK;
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if(!data)
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return CURLE_BAD_FUNCTION_ARGUMENT;
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do {
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next=form->next; /* the following form line */
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if(form->type == FORM_DATA) {
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rc = Curl_convert_to_network(data, form->line, form->length);
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/* Curl_convert_to_network calls failf if unsuccessful */
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if(rc)
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return rc;
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}
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} while((form = next) != NULL); /* continue */
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return CURLE_OK;
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}
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#endif /* CURL_DOES_CONVERSIONS */
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