| /*************************************************************************** |
| * _ _ ____ _ |
| * Project ___| | | | _ \| | |
| * / __| | | | |_) | | |
| * | (__| |_| | _ <| |___ |
| * \___|\___/|_| \_\_____| |
| * |
| * Copyright (C) 1998 - 2021, Daniel Stenberg, <[email protected]>, 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 "curl_setup.h" |
| |
| #ifdef CURL_DOES_CONVERSIONS |
| |
| #include <curl/curl.h> |
| |
| #include "non-ascii.h" |
| #include "formdata.h" |
| #include "sendf.h" |
| #include "urldata.h" |
| #include "multiif.h" |
| #include "strerror.h" |
| |
| #include "curl_memory.h" |
| /* The last #include file should be: */ |
| #include "memdebug.h" |
| |
| #ifdef HAVE_ICONV |
| #include <iconv.h> |
| /* set default codesets for iconv */ |
| #ifndef CURL_ICONV_CODESET_OF_NETWORK |
| #define CURL_ICONV_CODESET_OF_NETWORK "ISO8859-1" |
| #endif |
| #ifndef CURL_ICONV_CODESET_FOR_UTF8 |
| #define CURL_ICONV_CODESET_FOR_UTF8 "UTF-8" |
| #endif |
| #define ICONV_ERROR (size_t)-1 |
| #endif /* HAVE_ICONV */ |
| |
| /* |
| * Curl_convert_clone() returns a malloced copy of the source string (if |
| * returning CURLE_OK), with the data converted to network format. |
| */ |
| CURLcode Curl_convert_clone(struct Curl_easy *data, |
| const char *indata, |
| size_t insize, |
| char **outbuf) |
| { |
| char *convbuf; |
| CURLcode result; |
| |
| convbuf = malloc(insize); |
| if(!convbuf) |
| return CURLE_OUT_OF_MEMORY; |
| |
| memcpy(convbuf, indata, insize); |
| result = Curl_convert_to_network(data, convbuf, insize); |
| if(result) { |
| free(convbuf); |
| return result; |
| } |
| |
| *outbuf = convbuf; /* return the converted buffer */ |
| |
| return CURLE_OK; |
| } |
| |
| /* |
| * Curl_convert_to_network() is an internal function for performing ASCII |
| * conversions on non-ASCII platforms. It converts the buffer _in place_. |
| */ |
| CURLcode Curl_convert_to_network(struct Curl_easy *data, |
| char *buffer, size_t length) |
| { |
| if(data && data->set.convtonetwork) { |
| /* use translation callback */ |
| CURLcode result; |
| Curl_set_in_callback(data, true); |
| result = data->set.convtonetwork(buffer, length); |
| Curl_set_in_callback(data, false); |
| if(result) { |
| failf(data, |
| "CURLOPT_CONV_TO_NETWORK_FUNCTION callback returned %d: %s", |
| (int)result, curl_easy_strerror(result)); |
| } |
| |
| return result; |
| } |
| else { |
| #ifdef HAVE_ICONV |
| /* do the translation ourselves */ |
| iconv_t tmpcd = (iconv_t) -1; |
| iconv_t *cd = &tmpcd; |
| char *input_ptr, *output_ptr; |
| size_t in_bytes, out_bytes, rc; |
| char ebuffer[STRERROR_LEN]; |
| |
| /* open an iconv conversion descriptor if necessary */ |
| if(data) |
| cd = &data->outbound_cd; |
| if(*cd == (iconv_t)-1) { |
| *cd = iconv_open(CURL_ICONV_CODESET_OF_NETWORK, |
| CURL_ICONV_CODESET_OF_HOST); |
| if(*cd == (iconv_t)-1) { |
| failf(data, |
| "The iconv_open(\"%s\", \"%s\") call failed with errno %i: %s", |
| CURL_ICONV_CODESET_OF_NETWORK, |
| CURL_ICONV_CODESET_OF_HOST, |
| errno, Curl_strerror(errno, ebuffer, sizeof(ebuffer))); |
| return CURLE_CONV_FAILED; |
| } |
| } |
| /* call iconv */ |
| input_ptr = output_ptr = buffer; |
| in_bytes = out_bytes = length; |
| rc = iconv(*cd, &input_ptr, &in_bytes, |
| &output_ptr, &out_bytes); |
| if(!data) |
| iconv_close(tmpcd); |
| if((rc == ICONV_ERROR) || (in_bytes)) { |
| failf(data, |
| "The Curl_convert_to_network iconv call failed with errno %i: %s", |
| errno, Curl_strerror(errno, ebuffer, sizeof(ebuffer))); |
| return CURLE_CONV_FAILED; |
| } |
| #else |
| failf(data, "CURLOPT_CONV_TO_NETWORK_FUNCTION callback required"); |
| return CURLE_CONV_REQD; |
| #endif /* HAVE_ICONV */ |
| } |
| |
| return CURLE_OK; |
| } |
| |
| /* |
| * Curl_convert_from_network() is an internal function for performing ASCII |
| * conversions on non-ASCII platforms. It converts the buffer _in place_. |
| */ |
| CURLcode Curl_convert_from_network(struct Curl_easy *data, |
| char *buffer, size_t length) |
| { |
| if(data && data->set.convfromnetwork) { |
| /* use translation callback */ |
| CURLcode result; |
| Curl_set_in_callback(data, true); |
| result = data->set.convfromnetwork(buffer, length); |
| Curl_set_in_callback(data, false); |
| if(result) { |
| failf(data, |
| "CURLOPT_CONV_FROM_NETWORK_FUNCTION callback returned %d: %s", |
| (int)result, curl_easy_strerror(result)); |
| } |
| |
| return result; |
| } |
| else { |
| #ifdef HAVE_ICONV |
| /* do the translation ourselves */ |
| iconv_t tmpcd = (iconv_t) -1; |
| iconv_t *cd = &tmpcd; |
| char *input_ptr, *output_ptr; |
| size_t in_bytes, out_bytes, rc; |
| char ebuffer[STRERROR_LEN]; |
| |
| /* open an iconv conversion descriptor if necessary */ |
| if(data) |
| cd = &data->inbound_cd; |
| if(*cd == (iconv_t)-1) { |
| *cd = iconv_open(CURL_ICONV_CODESET_OF_HOST, |
| CURL_ICONV_CODESET_OF_NETWORK); |
| if(*cd == (iconv_t)-1) { |
| failf(data, |
| "The iconv_open(\"%s\", \"%s\") call failed with errno %i: %s", |
| CURL_ICONV_CODESET_OF_HOST, |
| CURL_ICONV_CODESET_OF_NETWORK, |
| errno, Curl_strerror(errno, ebuffer, sizeof(ebuffer))); |
| return CURLE_CONV_FAILED; |
| } |
| } |
| /* call iconv */ |
| input_ptr = output_ptr = buffer; |
| in_bytes = out_bytes = length; |
| rc = iconv(*cd, &input_ptr, &in_bytes, |
| &output_ptr, &out_bytes); |
| if(!data) |
| iconv_close(tmpcd); |
| if((rc == ICONV_ERROR) || (in_bytes)) { |
| failf(data, |
| "Curl_convert_from_network iconv call failed with errno %i: %s", |
| errno, Curl_strerror(errno, ebuffer, sizeof(ebuffer))); |
| return CURLE_CONV_FAILED; |
| } |
| #else |
| failf(data, "CURLOPT_CONV_FROM_NETWORK_FUNCTION callback required"); |
| return CURLE_CONV_REQD; |
| #endif /* HAVE_ICONV */ |
| } |
| |
| return CURLE_OK; |
| } |
| |
| /* |
| * Curl_convert_from_utf8() is an internal function for performing UTF-8 |
| * conversions on non-ASCII platforms. |
| */ |
| CURLcode Curl_convert_from_utf8(struct Curl_easy *data, |
| char *buffer, size_t length) |
| { |
| if(data && data->set.convfromutf8) { |
| /* use translation callback */ |
| CURLcode result; |
| Curl_set_in_callback(data, true); |
| result = data->set.convfromutf8(buffer, length); |
| Curl_set_in_callback(data, false); |
| if(result) { |
| failf(data, |
| "CURLOPT_CONV_FROM_UTF8_FUNCTION callback returned %d: %s", |
| (int)result, curl_easy_strerror(result)); |
| } |
| |
| return result; |
| } |
| else { |
| #ifdef HAVE_ICONV |
| /* do the translation ourselves */ |
| iconv_t tmpcd = (iconv_t) -1; |
| iconv_t *cd = &tmpcd; |
| char *input_ptr; |
| char *output_ptr; |
| size_t in_bytes, out_bytes, rc; |
| char ebuffer[STRERROR_LEN]; |
| |
| /* open an iconv conversion descriptor if necessary */ |
| if(data) |
| cd = &data->utf8_cd; |
| if(*cd == (iconv_t)-1) { |
| *cd = iconv_open(CURL_ICONV_CODESET_OF_HOST, |
| CURL_ICONV_CODESET_FOR_UTF8); |
| if(*cd == (iconv_t)-1) { |
| failf(data, |
| "The iconv_open(\"%s\", \"%s\") call failed with errno %i: %s", |
| CURL_ICONV_CODESET_OF_HOST, |
| CURL_ICONV_CODESET_FOR_UTF8, |
| errno, Curl_strerror(errno, ebuffer, sizeof(ebuffer))); |
| return CURLE_CONV_FAILED; |
| } |
| } |
| /* call iconv */ |
| input_ptr = output_ptr = buffer; |
| in_bytes = out_bytes = length; |
| rc = iconv(*cd, &input_ptr, &in_bytes, |
| &output_ptr, &out_bytes); |
| if(!data) |
| iconv_close(tmpcd); |
| if((rc == ICONV_ERROR) || (in_bytes)) { |
| failf(data, |
| "The Curl_convert_from_utf8 iconv call failed with errno %i: %s", |
| errno, Curl_strerror(errno, ebuffer, sizeof(ebuffer))); |
| return CURLE_CONV_FAILED; |
| } |
| if(output_ptr < input_ptr) { |
| /* null terminate the now shorter output string */ |
| *output_ptr = 0x00; |
| } |
| #else |
| failf(data, "CURLOPT_CONV_FROM_UTF8_FUNCTION callback required"); |
| return CURLE_CONV_REQD; |
| #endif /* HAVE_ICONV */ |
| } |
| |
| return CURLE_OK; |
| } |
| |
| /* |
| * Init conversion stuff for a Curl_easy |
| */ |
| void Curl_convert_init(struct Curl_easy *data) |
| { |
| #if defined(CURL_DOES_CONVERSIONS) && defined(HAVE_ICONV) |
| /* conversion descriptors for iconv calls */ |
| data->outbound_cd = (iconv_t)-1; |
| data->inbound_cd = (iconv_t)-1; |
| data->utf8_cd = (iconv_t)-1; |
| #else |
| (void)data; |
| #endif /* CURL_DOES_CONVERSIONS && HAVE_ICONV */ |
| } |
| |
| /* |
| * Setup conversion stuff for a Curl_easy |
| */ |
| void Curl_convert_setup(struct Curl_easy *data) |
| { |
| data->inbound_cd = iconv_open(CURL_ICONV_CODESET_OF_HOST, |
| CURL_ICONV_CODESET_OF_NETWORK); |
| data->outbound_cd = iconv_open(CURL_ICONV_CODESET_OF_NETWORK, |
| CURL_ICONV_CODESET_OF_HOST); |
| data->utf8_cd = iconv_open(CURL_ICONV_CODESET_OF_HOST, |
| CURL_ICONV_CODESET_FOR_UTF8); |
| } |
| |
| /* |
| * Close conversion stuff for a Curl_easy |
| */ |
| |
| void Curl_convert_close(struct Curl_easy *data) |
| { |
| #ifdef HAVE_ICONV |
| /* close iconv conversion descriptors */ |
| if(data->inbound_cd != (iconv_t)-1) { |
| iconv_close(data->inbound_cd); |
| } |
| if(data->outbound_cd != (iconv_t)-1) { |
| iconv_close(data->outbound_cd); |
| } |
| if(data->utf8_cd != (iconv_t)-1) { |
| iconv_close(data->utf8_cd); |
| } |
| #else |
| (void)data; |
| #endif /* HAVE_ICONV */ |
| } |
| |
| #endif /* CURL_DOES_CONVERSIONS */ |
