1 | /***************************************************************************
|
---|
2 | * _ _ ____ _
|
---|
3 | * Project ___| | | | _ \| |
|
---|
4 | * / __| | | | |_) | |
|
---|
5 | * | (__| |_| | _ <| |___
|
---|
6 | * \___|\___/|_| \_\_____|
|
---|
7 | *
|
---|
8 | * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel@haxx.se>, et al.
|
---|
9 | *
|
---|
10 | * This software is licensed as described in the file COPYING, which
|
---|
11 | * you should have received as part of this distribution. The terms
|
---|
12 | * are also available at https://curl.haxx.se/docs/copyright.html.
|
---|
13 | *
|
---|
14 | * You may opt to use, copy, modify, merge, publish, distribute and/or sell
|
---|
15 | * copies of the Software, and permit persons to whom the Software is
|
---|
16 | * furnished to do so, under the terms of the COPYING file.
|
---|
17 | *
|
---|
18 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
|
---|
19 | * KIND, either express or implied.
|
---|
20 | *
|
---|
21 | ***************************************************************************/
|
---|
22 |
|
---|
23 | #include "curl_setup.h"
|
---|
24 |
|
---|
25 | #ifdef CURL_DOES_CONVERSIONS
|
---|
26 |
|
---|
27 | #include <curl/curl.h>
|
---|
28 |
|
---|
29 | #include "non-ascii.h"
|
---|
30 | #include "formdata.h"
|
---|
31 | #include "sendf.h"
|
---|
32 | #include "urldata.h"
|
---|
33 |
|
---|
34 | #include "curl_memory.h"
|
---|
35 | /* The last #include file should be: */
|
---|
36 | #include "memdebug.h"
|
---|
37 |
|
---|
38 | #ifdef HAVE_ICONV
|
---|
39 | #include <iconv.h>
|
---|
40 | /* set default codesets for iconv */
|
---|
41 | #ifndef CURL_ICONV_CODESET_OF_NETWORK
|
---|
42 | #define CURL_ICONV_CODESET_OF_NETWORK "ISO8859-1"
|
---|
43 | #endif
|
---|
44 | #ifndef CURL_ICONV_CODESET_FOR_UTF8
|
---|
45 | #define CURL_ICONV_CODESET_FOR_UTF8 "UTF-8"
|
---|
46 | #endif
|
---|
47 | #define ICONV_ERROR (size_t)-1
|
---|
48 | #endif /* HAVE_ICONV */
|
---|
49 |
|
---|
50 | /*
|
---|
51 | * Curl_convert_clone() returns a malloced copy of the source string (if
|
---|
52 | * returning CURLE_OK), with the data converted to network format.
|
---|
53 | */
|
---|
54 | CURLcode Curl_convert_clone(struct Curl_easy *data,
|
---|
55 | const char *indata,
|
---|
56 | size_t insize,
|
---|
57 | char **outbuf)
|
---|
58 | {
|
---|
59 | char *convbuf;
|
---|
60 | CURLcode result;
|
---|
61 |
|
---|
62 | convbuf = malloc(insize);
|
---|
63 | if(!convbuf)
|
---|
64 | return CURLE_OUT_OF_MEMORY;
|
---|
65 |
|
---|
66 | memcpy(convbuf, indata, insize);
|
---|
67 | result = Curl_convert_to_network(data, convbuf, insize);
|
---|
68 | if(result) {
|
---|
69 | free(convbuf);
|
---|
70 | return result;
|
---|
71 | }
|
---|
72 |
|
---|
73 | *outbuf = convbuf; /* return the converted buffer */
|
---|
74 |
|
---|
75 | return CURLE_OK;
|
---|
76 | }
|
---|
77 |
|
---|
78 | /*
|
---|
79 | * Curl_convert_to_network() is an internal function for performing ASCII
|
---|
80 | * conversions on non-ASCII platforms. It convers the buffer _in place_.
|
---|
81 | */
|
---|
82 | CURLcode Curl_convert_to_network(struct Curl_easy *data,
|
---|
83 | char *buffer, size_t length)
|
---|
84 | {
|
---|
85 | if(data && data->set.convtonetwork) {
|
---|
86 | /* use translation callback */
|
---|
87 | CURLcode result = data->set.convtonetwork(buffer, length);
|
---|
88 | if(result) {
|
---|
89 | failf(data,
|
---|
90 | "CURLOPT_CONV_TO_NETWORK_FUNCTION callback returned %d: %s",
|
---|
91 | (int)result, curl_easy_strerror(result));
|
---|
92 | }
|
---|
93 |
|
---|
94 | return result;
|
---|
95 | }
|
---|
96 | else {
|
---|
97 | #ifdef HAVE_ICONV
|
---|
98 | /* do the translation ourselves */
|
---|
99 | iconv_t tmpcd = (iconv_t) -1;
|
---|
100 | iconv_t *cd = &tmpcd;
|
---|
101 | char *input_ptr, *output_ptr;
|
---|
102 | size_t in_bytes, out_bytes, rc;
|
---|
103 |
|
---|
104 | /* open an iconv conversion descriptor if necessary */
|
---|
105 | if(data)
|
---|
106 | cd = &data->outbound_cd;
|
---|
107 | if(*cd == (iconv_t)-1) {
|
---|
108 | *cd = iconv_open(CURL_ICONV_CODESET_OF_NETWORK,
|
---|
109 | CURL_ICONV_CODESET_OF_HOST);
|
---|
110 | if(*cd == (iconv_t)-1) {
|
---|
111 | failf(data,
|
---|
112 | "The iconv_open(\"%s\", \"%s\") call failed with errno %i: %s",
|
---|
113 | CURL_ICONV_CODESET_OF_NETWORK,
|
---|
114 | CURL_ICONV_CODESET_OF_HOST,
|
---|
115 | errno, strerror(errno));
|
---|
116 | return CURLE_CONV_FAILED;
|
---|
117 | }
|
---|
118 | }
|
---|
119 | /* call iconv */
|
---|
120 | input_ptr = output_ptr = buffer;
|
---|
121 | in_bytes = out_bytes = length;
|
---|
122 | rc = iconv(*cd, &input_ptr, &in_bytes,
|
---|
123 | &output_ptr, &out_bytes);
|
---|
124 | if(!data)
|
---|
125 | iconv_close(tmpcd);
|
---|
126 | if((rc == ICONV_ERROR) || (in_bytes != 0)) {
|
---|
127 | failf(data,
|
---|
128 | "The Curl_convert_to_network iconv call failed with errno %i: %s",
|
---|
129 | errno, strerror(errno));
|
---|
130 | return CURLE_CONV_FAILED;
|
---|
131 | }
|
---|
132 | #else
|
---|
133 | failf(data, "CURLOPT_CONV_TO_NETWORK_FUNCTION callback required");
|
---|
134 | return CURLE_CONV_REQD;
|
---|
135 | #endif /* HAVE_ICONV */
|
---|
136 | }
|
---|
137 |
|
---|
138 | return CURLE_OK;
|
---|
139 | }
|
---|
140 |
|
---|
141 | /*
|
---|
142 | * Curl_convert_from_network() is an internal function for performing ASCII
|
---|
143 | * conversions on non-ASCII platforms. It convers the buffer _in place_.
|
---|
144 | */
|
---|
145 | CURLcode Curl_convert_from_network(struct Curl_easy *data,
|
---|
146 | char *buffer, size_t length)
|
---|
147 | {
|
---|
148 | if(data && data->set.convfromnetwork) {
|
---|
149 | /* use translation callback */
|
---|
150 | CURLcode result = data->set.convfromnetwork(buffer, length);
|
---|
151 | if(result) {
|
---|
152 | failf(data,
|
---|
153 | "CURLOPT_CONV_FROM_NETWORK_FUNCTION callback returned %d: %s",
|
---|
154 | (int)result, curl_easy_strerror(result));
|
---|
155 | }
|
---|
156 |
|
---|
157 | return result;
|
---|
158 | }
|
---|
159 | else {
|
---|
160 | #ifdef HAVE_ICONV
|
---|
161 | /* do the translation ourselves */
|
---|
162 | iconv_t tmpcd = (iconv_t) -1;
|
---|
163 | iconv_t *cd = &tmpcd;
|
---|
164 | char *input_ptr, *output_ptr;
|
---|
165 | size_t in_bytes, out_bytes, rc;
|
---|
166 |
|
---|
167 | /* open an iconv conversion descriptor if necessary */
|
---|
168 | if(data)
|
---|
169 | cd = &data->inbound_cd;
|
---|
170 | if(*cd == (iconv_t)-1) {
|
---|
171 | *cd = iconv_open(CURL_ICONV_CODESET_OF_HOST,
|
---|
172 | CURL_ICONV_CODESET_OF_NETWORK);
|
---|
173 | if(*cd == (iconv_t)-1) {
|
---|
174 | failf(data,
|
---|
175 | "The iconv_open(\"%s\", \"%s\") call failed with errno %i: %s",
|
---|
176 | CURL_ICONV_CODESET_OF_HOST,
|
---|
177 | CURL_ICONV_CODESET_OF_NETWORK,
|
---|
178 | errno, strerror(errno));
|
---|
179 | return CURLE_CONV_FAILED;
|
---|
180 | }
|
---|
181 | }
|
---|
182 | /* call iconv */
|
---|
183 | input_ptr = output_ptr = buffer;
|
---|
184 | in_bytes = out_bytes = length;
|
---|
185 | rc = iconv(*cd, &input_ptr, &in_bytes,
|
---|
186 | &output_ptr, &out_bytes);
|
---|
187 | if(!data)
|
---|
188 | iconv_close(tmpcd);
|
---|
189 | if((rc == ICONV_ERROR) || (in_bytes != 0)) {
|
---|
190 | failf(data,
|
---|
191 | "Curl_convert_from_network iconv call failed with errno %i: %s",
|
---|
192 | errno, strerror(errno));
|
---|
193 | return CURLE_CONV_FAILED;
|
---|
194 | }
|
---|
195 | #else
|
---|
196 | failf(data, "CURLOPT_CONV_FROM_NETWORK_FUNCTION callback required");
|
---|
197 | return CURLE_CONV_REQD;
|
---|
198 | #endif /* HAVE_ICONV */
|
---|
199 | }
|
---|
200 |
|
---|
201 | return CURLE_OK;
|
---|
202 | }
|
---|
203 |
|
---|
204 | /*
|
---|
205 | * Curl_convert_from_utf8() is an internal function for performing UTF-8
|
---|
206 | * conversions on non-ASCII platforms.
|
---|
207 | */
|
---|
208 | CURLcode Curl_convert_from_utf8(struct Curl_easy *data,
|
---|
209 | char *buffer, size_t length)
|
---|
210 | {
|
---|
211 | if(data && data->set.convfromutf8) {
|
---|
212 | /* use translation callback */
|
---|
213 | CURLcode result = data->set.convfromutf8(buffer, length);
|
---|
214 | if(result) {
|
---|
215 | failf(data,
|
---|
216 | "CURLOPT_CONV_FROM_UTF8_FUNCTION callback returned %d: %s",
|
---|
217 | (int)result, curl_easy_strerror(result));
|
---|
218 | }
|
---|
219 |
|
---|
220 | return result;
|
---|
221 | }
|
---|
222 | else {
|
---|
223 | #ifdef HAVE_ICONV
|
---|
224 | /* do the translation ourselves */
|
---|
225 | iconv_t tmpcd = (iconv_t) -1;
|
---|
226 | iconv_t *cd = &tmpcd;
|
---|
227 | char *input_ptr;
|
---|
228 | char *output_ptr;
|
---|
229 | size_t in_bytes, out_bytes, rc;
|
---|
230 |
|
---|
231 | /* open an iconv conversion descriptor if necessary */
|
---|
232 | if(data)
|
---|
233 | cd = &data->utf8_cd;
|
---|
234 | if(*cd == (iconv_t)-1) {
|
---|
235 | *cd = iconv_open(CURL_ICONV_CODESET_OF_HOST,
|
---|
236 | CURL_ICONV_CODESET_FOR_UTF8);
|
---|
237 | if(*cd == (iconv_t)-1) {
|
---|
238 | failf(data,
|
---|
239 | "The iconv_open(\"%s\", \"%s\") call failed with errno %i: %s",
|
---|
240 | CURL_ICONV_CODESET_OF_HOST,
|
---|
241 | CURL_ICONV_CODESET_FOR_UTF8,
|
---|
242 | errno, strerror(errno));
|
---|
243 | return CURLE_CONV_FAILED;
|
---|
244 | }
|
---|
245 | }
|
---|
246 | /* call iconv */
|
---|
247 | input_ptr = output_ptr = buffer;
|
---|
248 | in_bytes = out_bytes = length;
|
---|
249 | rc = iconv(*cd, &input_ptr, &in_bytes,
|
---|
250 | &output_ptr, &out_bytes);
|
---|
251 | if(!data)
|
---|
252 | iconv_close(tmpcd);
|
---|
253 | if((rc == ICONV_ERROR) || (in_bytes != 0)) {
|
---|
254 | failf(data,
|
---|
255 | "The Curl_convert_from_utf8 iconv call failed with errno %i: %s",
|
---|
256 | errno, strerror(errno));
|
---|
257 | return CURLE_CONV_FAILED;
|
---|
258 | }
|
---|
259 | if(output_ptr < input_ptr) {
|
---|
260 | /* null terminate the now shorter output string */
|
---|
261 | *output_ptr = 0x00;
|
---|
262 | }
|
---|
263 | #else
|
---|
264 | failf(data, "CURLOPT_CONV_FROM_UTF8_FUNCTION callback required");
|
---|
265 | return CURLE_CONV_REQD;
|
---|
266 | #endif /* HAVE_ICONV */
|
---|
267 | }
|
---|
268 |
|
---|
269 | return CURLE_OK;
|
---|
270 | }
|
---|
271 |
|
---|
272 | /*
|
---|
273 | * Init conversion stuff for a Curl_easy
|
---|
274 | */
|
---|
275 | void Curl_convert_init(struct Curl_easy *data)
|
---|
276 | {
|
---|
277 | #if defined(CURL_DOES_CONVERSIONS) && defined(HAVE_ICONV)
|
---|
278 | /* conversion descriptors for iconv calls */
|
---|
279 | data->outbound_cd = (iconv_t)-1;
|
---|
280 | data->inbound_cd = (iconv_t)-1;
|
---|
281 | data->utf8_cd = (iconv_t)-1;
|
---|
282 | #else
|
---|
283 | (void)data;
|
---|
284 | #endif /* CURL_DOES_CONVERSIONS && HAVE_ICONV */
|
---|
285 | }
|
---|
286 |
|
---|
287 | /*
|
---|
288 | * Setup conversion stuff for a Curl_easy
|
---|
289 | */
|
---|
290 | void Curl_convert_setup(struct Curl_easy *data)
|
---|
291 | {
|
---|
292 | data->inbound_cd = iconv_open(CURL_ICONV_CODESET_OF_HOST,
|
---|
293 | CURL_ICONV_CODESET_OF_NETWORK);
|
---|
294 | data->outbound_cd = iconv_open(CURL_ICONV_CODESET_OF_NETWORK,
|
---|
295 | CURL_ICONV_CODESET_OF_HOST);
|
---|
296 | data->utf8_cd = iconv_open(CURL_ICONV_CODESET_OF_HOST,
|
---|
297 | CURL_ICONV_CODESET_FOR_UTF8);
|
---|
298 | }
|
---|
299 |
|
---|
300 | /*
|
---|
301 | * Close conversion stuff for a Curl_easy
|
---|
302 | */
|
---|
303 |
|
---|
304 | void Curl_convert_close(struct Curl_easy *data)
|
---|
305 | {
|
---|
306 | #ifdef HAVE_ICONV
|
---|
307 | /* close iconv conversion descriptors */
|
---|
308 | if(data->inbound_cd != (iconv_t)-1) {
|
---|
309 | iconv_close(data->inbound_cd);
|
---|
310 | }
|
---|
311 | if(data->outbound_cd != (iconv_t)-1) {
|
---|
312 | iconv_close(data->outbound_cd);
|
---|
313 | }
|
---|
314 | if(data->utf8_cd != (iconv_t)-1) {
|
---|
315 | iconv_close(data->utf8_cd);
|
---|
316 | }
|
---|
317 | #else
|
---|
318 | (void)data;
|
---|
319 | #endif /* HAVE_ICONV */
|
---|
320 | }
|
---|
321 |
|
---|
322 | #endif /* CURL_DOES_CONVERSIONS */
|
---|