13 * version 2 for more details (a copy is included in the LICENSE file that
14 * accompanied this code).
15 *
16 * You should have received a copy of the GNU General Public License version
17 * 2 along with this work; if not, write to the Free Software Foundation,
18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
19 *
20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
21 * or visit www.oracle.com if you need additional information or have any
22 * questions.
23 */
24
25 // This file is available under and governed by the GNU General Public
26 // License version 2 only, as published by the Free Software Foundation.
27 // However, the following notice accompanied the original version of this
28 // file:
29 //
30 //---------------------------------------------------------------------------------
31 //
32 // Little Color Management System
33 // Copyright (c) 1998-2017 Marti Maria Saguer
34 //
35 // Permission is hereby granted, free of charge, to any person obtaining
36 // a copy of this software and associated documentation files (the "Software"),
37 // to deal in the Software without restriction, including without limitation
38 // the rights to use, copy, modify, merge, publish, distribute, sublicense,
39 // and/or sell copies of the Software, and to permit persons to whom the Software
40 // is furnished to do so, subject to the following conditions:
41 //
42 // The above copyright notice and this permission notice shall be included in
43 // all copies or substantial portions of the Software.
44 //
45 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
46 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO
47 // THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
48 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
49 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
50 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
51 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
52 //
53 //---------------------------------------------------------------------------------
77
78 typedef struct {
79
80 cmsUInt32Number buf[4];
81 cmsUInt32Number bits[2];
82 cmsUInt8Number in[64];
83 cmsContext ContextID;
84
85 } _cmsMD5;
86
87 #define F1(x, y, z) (z ^ (x & (y ^ z)))
88 #define F2(x, y, z) F1(z, x, y)
89 #define F3(x, y, z) (x ^ y ^ z)
90 #define F4(x, y, z) (y ^ (x | ~z))
91
92 #define STEP(f, w, x, y, z, data, s) \
93 ( w += f(x, y, z) + data, w = w<<s | w>>(32-s), w += x )
94
95
96 static
97 void MD5_Transform(cmsUInt32Number buf[4], cmsUInt32Number in[16])
98
99 {
100 register cmsUInt32Number a, b, c, d;
101
102 a = buf[0];
103 b = buf[1];
104 c = buf[2];
105 d = buf[3];
106
107 STEP(F1, a, b, c, d, in[0] + 0xd76aa478, 7);
108 STEP(F1, d, a, b, c, in[1] + 0xe8c7b756, 12);
109 STEP(F1, c, d, a, b, in[2] + 0x242070db, 17);
110 STEP(F1, b, c, d, a, in[3] + 0xc1bdceee, 22);
111 STEP(F1, a, b, c, d, in[4] + 0xf57c0faf, 7);
112 STEP(F1, d, a, b, c, in[5] + 0x4787c62a, 12);
113 STEP(F1, c, d, a, b, in[6] + 0xa8304613, 17);
114 STEP(F1, b, c, d, a, in[7] + 0xfd469501, 22);
115 STEP(F1, a, b, c, d, in[8] + 0x698098d8, 7);
116 STEP(F1, d, a, b, c, in[9] + 0x8b44f7af, 12);
117 STEP(F1, c, d, a, b, in[10] + 0xffff5bb1, 17);
118 STEP(F1, b, c, d, a, in[11] + 0x895cd7be, 22);
119 STEP(F1, a, b, c, d, in[12] + 0x6b901122, 7);
120 STEP(F1, d, a, b, c, in[13] + 0xfd987193, 12);
163 STEP(F4, d, a, b, c, in[3] + 0x8f0ccc92, 10);
164 STEP(F4, c, d, a, b, in[10] + 0xffeff47d, 15);
165 STEP(F4, b, c, d, a, in[1] + 0x85845dd1, 21);
166 STEP(F4, a, b, c, d, in[8] + 0x6fa87e4f, 6);
167 STEP(F4, d, a, b, c, in[15] + 0xfe2ce6e0, 10);
168 STEP(F4, c, d, a, b, in[6] + 0xa3014314, 15);
169 STEP(F4, b, c, d, a, in[13] + 0x4e0811a1, 21);
170 STEP(F4, a, b, c, d, in[4] + 0xf7537e82, 6);
171 STEP(F4, d, a, b, c, in[11] + 0xbd3af235, 10);
172 STEP(F4, c, d, a, b, in[2] + 0x2ad7d2bb, 15);
173 STEP(F4, b, c, d, a, in[9] + 0xeb86d391, 21);
174
175 buf[0] += a;
176 buf[1] += b;
177 buf[2] += c;
178 buf[3] += d;
179 }
180
181
182 // Create a MD5 object
183 static
184 cmsHANDLE MD5alloc(cmsContext ContextID)
185 {
186 _cmsMD5* ctx = (_cmsMD5*) _cmsMallocZero(ContextID, sizeof(_cmsMD5));
187 if (ctx == NULL) return NULL;
188
189 ctx ->ContextID = ContextID;
190
191 ctx->buf[0] = 0x67452301;
192 ctx->buf[1] = 0xefcdab89;
193 ctx->buf[2] = 0x98badcfe;
194 ctx->buf[3] = 0x10325476;
195
196 ctx->bits[0] = 0;
197 ctx->bits[1] = 0;
198
199 return (cmsHANDLE) ctx;
200 }
201
202
203 static
204 void MD5add(cmsHANDLE Handle, cmsUInt8Number* buf, cmsUInt32Number len)
205 {
206 _cmsMD5* ctx = (_cmsMD5*) Handle;
207 cmsUInt32Number t;
208
209 t = ctx->bits[0];
210 if ((ctx->bits[0] = t + (len << 3)) < t)
211 ctx->bits[1]++;
212
213 ctx->bits[1] += len >> 29;
214
215 t = (t >> 3) & 0x3f;
216
217 if (t) {
218
219 cmsUInt8Number *p = (cmsUInt8Number *) ctx->in + t;
220
221 t = 64 - t;
222 if (len < t) {
223 memmove(p, buf, len);
224 return;
225 }
226
227 memmove(p, buf, t);
228 byteReverse(ctx->in, 16);
229
230 MD5_Transform(ctx->buf, (cmsUInt32Number *) ctx->in);
231 buf += t;
232 len -= t;
233 }
234
235 while (len >= 64) {
236 memmove(ctx->in, buf, 64);
237 byteReverse(ctx->in, 16);
238 MD5_Transform(ctx->buf, (cmsUInt32Number *) ctx->in);
239 buf += 64;
240 len -= 64;
241 }
242
243 memmove(ctx->in, buf, len);
244 }
245
246 // Destroy the object and return the checksum
247 static
248 void MD5finish(cmsProfileID* ProfileID, cmsHANDLE Handle)
249 {
250 _cmsMD5* ctx = (_cmsMD5*) Handle;
251 cmsUInt32Number count;
252 cmsUInt8Number *p;
253
254 count = (ctx->bits[0] >> 3) & 0x3F;
255
256 p = ctx->in + count;
257 *p++ = 0x80;
258
259 count = 64 - 1 - count;
260
261 if (count < 8) {
262
263 memset(p, 0, count);
264 byteReverse(ctx->in, 16);
265 MD5_Transform(ctx->buf, (cmsUInt32Number *) ctx->in);
266
267 memset(ctx->in, 0, 56);
268 } else {
269 memset(p, 0, count - 8);
270 }
271 byteReverse(ctx->in, 14);
272
273 ((cmsUInt32Number *) ctx->in)[14] = ctx->bits[0];
274 ((cmsUInt32Number *) ctx->in)[15] = ctx->bits[1];
275
276 MD5_Transform(ctx->buf, (cmsUInt32Number *) ctx->in);
277
278 byteReverse((cmsUInt8Number *) ctx->buf, 4);
279 memmove(ProfileID ->ID8, ctx->buf, 16);
280
281 _cmsFree(ctx ->ContextID, ctx);
282 }
283
284
285
286 // Assuming io points to an ICC profile, compute and store MD5 checksum
287 // In the header, rendering intentent, attributes and ID should be set to zero
288 // before computing MD5 checksum (per 6.1.13 in ICC spec)
289
290 cmsBool CMSEXPORT cmsMD5computeID(cmsHPROFILE hProfile)
291 {
292 cmsContext ContextID;
293 cmsUInt32Number BytesNeeded;
294 cmsUInt8Number* Mem = NULL;
295 cmsHANDLE MD5 = NULL;
296 _cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
302
303 // Save a copy of the profile header
304 memmove(&Keep, Icc, sizeof(_cmsICCPROFILE));
305
306 // Set RI, attributes and ID
307 memset(&Icc ->attributes, 0, sizeof(Icc ->attributes));
308 Icc ->RenderingIntent = 0;
309 memset(&Icc ->ProfileID, 0, sizeof(Icc ->ProfileID));
310
311 // Compute needed storage
312 if (!cmsSaveProfileToMem(hProfile, NULL, &BytesNeeded)) goto Error;
313
314 // Allocate memory
315 Mem = (cmsUInt8Number*) _cmsMalloc(ContextID, BytesNeeded);
316 if (Mem == NULL) goto Error;
317
318 // Save to temporary storage
319 if (!cmsSaveProfileToMem(hProfile, Mem, &BytesNeeded)) goto Error;
320
321 // Create MD5 object
322 MD5 = MD5alloc(ContextID);
323 if (MD5 == NULL) goto Error;
324
325 // Add all bytes
326 MD5add(MD5, Mem, BytesNeeded);
327
328 // Temp storage is no longer needed
329 _cmsFree(ContextID, Mem);
330
331 // Restore header
332 memmove(Icc, &Keep, sizeof(_cmsICCPROFILE));
333
334 // And store the ID
335 MD5finish(&Icc ->ProfileID, MD5);
336 return TRUE;
337
338 Error:
339
340 // Free resources as something went wrong
341 // "MD5" cannot be other than NULL here, so no need to free it
342 if (Mem != NULL) _cmsFree(ContextID, Mem);
343 memmove(Icc, &Keep, sizeof(_cmsICCPROFILE));
344 return FALSE;
345 }
346
|
13 * version 2 for more details (a copy is included in the LICENSE file that
14 * accompanied this code).
15 *
16 * You should have received a copy of the GNU General Public License version
17 * 2 along with this work; if not, write to the Free Software Foundation,
18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
19 *
20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
21 * or visit www.oracle.com if you need additional information or have any
22 * questions.
23 */
24
25 // This file is available under and governed by the GNU General Public
26 // License version 2 only, as published by the Free Software Foundation.
27 // However, the following notice accompanied the original version of this
28 // file:
29 //
30 //---------------------------------------------------------------------------------
31 //
32 // Little Color Management System
33 // Copyright (c) 1998-2020 Marti Maria Saguer
34 //
35 // Permission is hereby granted, free of charge, to any person obtaining
36 // a copy of this software and associated documentation files (the "Software"),
37 // to deal in the Software without restriction, including without limitation
38 // the rights to use, copy, modify, merge, publish, distribute, sublicense,
39 // and/or sell copies of the Software, and to permit persons to whom the Software
40 // is furnished to do so, subject to the following conditions:
41 //
42 // The above copyright notice and this permission notice shall be included in
43 // all copies or substantial portions of the Software.
44 //
45 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
46 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO
47 // THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
48 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
49 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
50 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
51 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
52 //
53 //---------------------------------------------------------------------------------
77
78 typedef struct {
79
80 cmsUInt32Number buf[4];
81 cmsUInt32Number bits[2];
82 cmsUInt8Number in[64];
83 cmsContext ContextID;
84
85 } _cmsMD5;
86
87 #define F1(x, y, z) (z ^ (x & (y ^ z)))
88 #define F2(x, y, z) F1(z, x, y)
89 #define F3(x, y, z) (x ^ y ^ z)
90 #define F4(x, y, z) (y ^ (x | ~z))
91
92 #define STEP(f, w, x, y, z, data, s) \
93 ( w += f(x, y, z) + data, w = w<<s | w>>(32-s), w += x )
94
95
96 static
97 void cmsMD5_Transform(cmsUInt32Number buf[4], cmsUInt32Number in[16])
98 {
99 CMSREGISTER cmsUInt32Number a, b, c, d;
100
101 a = buf[0];
102 b = buf[1];
103 c = buf[2];
104 d = buf[3];
105
106 STEP(F1, a, b, c, d, in[0] + 0xd76aa478, 7);
107 STEP(F1, d, a, b, c, in[1] + 0xe8c7b756, 12);
108 STEP(F1, c, d, a, b, in[2] + 0x242070db, 17);
109 STEP(F1, b, c, d, a, in[3] + 0xc1bdceee, 22);
110 STEP(F1, a, b, c, d, in[4] + 0xf57c0faf, 7);
111 STEP(F1, d, a, b, c, in[5] + 0x4787c62a, 12);
112 STEP(F1, c, d, a, b, in[6] + 0xa8304613, 17);
113 STEP(F1, b, c, d, a, in[7] + 0xfd469501, 22);
114 STEP(F1, a, b, c, d, in[8] + 0x698098d8, 7);
115 STEP(F1, d, a, b, c, in[9] + 0x8b44f7af, 12);
116 STEP(F1, c, d, a, b, in[10] + 0xffff5bb1, 17);
117 STEP(F1, b, c, d, a, in[11] + 0x895cd7be, 22);
118 STEP(F1, a, b, c, d, in[12] + 0x6b901122, 7);
119 STEP(F1, d, a, b, c, in[13] + 0xfd987193, 12);
162 STEP(F4, d, a, b, c, in[3] + 0x8f0ccc92, 10);
163 STEP(F4, c, d, a, b, in[10] + 0xffeff47d, 15);
164 STEP(F4, b, c, d, a, in[1] + 0x85845dd1, 21);
165 STEP(F4, a, b, c, d, in[8] + 0x6fa87e4f, 6);
166 STEP(F4, d, a, b, c, in[15] + 0xfe2ce6e0, 10);
167 STEP(F4, c, d, a, b, in[6] + 0xa3014314, 15);
168 STEP(F4, b, c, d, a, in[13] + 0x4e0811a1, 21);
169 STEP(F4, a, b, c, d, in[4] + 0xf7537e82, 6);
170 STEP(F4, d, a, b, c, in[11] + 0xbd3af235, 10);
171 STEP(F4, c, d, a, b, in[2] + 0x2ad7d2bb, 15);
172 STEP(F4, b, c, d, a, in[9] + 0xeb86d391, 21);
173
174 buf[0] += a;
175 buf[1] += b;
176 buf[2] += c;
177 buf[3] += d;
178 }
179
180
181 // Create a MD5 object
182
183 cmsHANDLE CMSEXPORT cmsMD5alloc(cmsContext ContextID)
184 {
185 _cmsMD5* ctx = (_cmsMD5*) _cmsMallocZero(ContextID, sizeof(_cmsMD5));
186 if (ctx == NULL) return NULL;
187
188 ctx ->ContextID = ContextID;
189
190 ctx->buf[0] = 0x67452301;
191 ctx->buf[1] = 0xefcdab89;
192 ctx->buf[2] = 0x98badcfe;
193 ctx->buf[3] = 0x10325476;
194
195 ctx->bits[0] = 0;
196 ctx->bits[1] = 0;
197
198 return (cmsHANDLE) ctx;
199 }
200
201 void CMSEXPORT cmsMD5add(cmsHANDLE Handle, const cmsUInt8Number* buf, cmsUInt32Number len)
202 {
203 _cmsMD5* ctx = (_cmsMD5*) Handle;
204 cmsUInt32Number t;
205
206 t = ctx->bits[0];
207 if ((ctx->bits[0] = t + (len << 3)) < t)
208 ctx->bits[1]++;
209
210 ctx->bits[1] += len >> 29;
211
212 t = (t >> 3) & 0x3f;
213
214 if (t) {
215
216 cmsUInt8Number *p = (cmsUInt8Number *) ctx->in + t;
217
218 t = 64 - t;
219 if (len < t) {
220 memmove(p, buf, len);
221 return;
222 }
223
224 memmove(p, buf, t);
225 byteReverse(ctx->in, 16);
226
227 cmsMD5_Transform(ctx->buf, (cmsUInt32Number *) ctx->in);
228 buf += t;
229 len -= t;
230 }
231
232 while (len >= 64) {
233 memmove(ctx->in, buf, 64);
234 byteReverse(ctx->in, 16);
235 cmsMD5_Transform(ctx->buf, (cmsUInt32Number *) ctx->in);
236 buf += 64;
237 len -= 64;
238 }
239
240 memmove(ctx->in, buf, len);
241 }
242
243 // Destroy the object and return the checksum
244 void CMSEXPORT cmsMD5finish(cmsProfileID* ProfileID, cmsHANDLE Handle)
245 {
246 _cmsMD5* ctx = (_cmsMD5*) Handle;
247 cmsUInt32Number count;
248 cmsUInt8Number *p;
249
250 count = (ctx->bits[0] >> 3) & 0x3F;
251
252 p = ctx->in + count;
253 *p++ = 0x80;
254
255 count = 64 - 1 - count;
256
257 if (count < 8) {
258
259 memset(p, 0, count);
260 byteReverse(ctx->in, 16);
261 cmsMD5_Transform(ctx->buf, (cmsUInt32Number *) ctx->in);
262
263 memset(ctx->in, 0, 56);
264 } else {
265 memset(p, 0, count - 8);
266 }
267 byteReverse(ctx->in, 14);
268
269 ((cmsUInt32Number *) ctx->in)[14] = ctx->bits[0];
270 ((cmsUInt32Number *) ctx->in)[15] = ctx->bits[1];
271
272 cmsMD5_Transform(ctx->buf, (cmsUInt32Number *) ctx->in);
273
274 byteReverse((cmsUInt8Number *) ctx->buf, 4);
275 memmove(ProfileID ->ID8, ctx->buf, 16);
276
277 _cmsFree(ctx ->ContextID, ctx);
278 }
279
280
281
282 // Assuming io points to an ICC profile, compute and store MD5 checksum
283 // In the header, rendering intentent, attributes and ID should be set to zero
284 // before computing MD5 checksum (per 6.1.13 in ICC spec)
285
286 cmsBool CMSEXPORT cmsMD5computeID(cmsHPROFILE hProfile)
287 {
288 cmsContext ContextID;
289 cmsUInt32Number BytesNeeded;
290 cmsUInt8Number* Mem = NULL;
291 cmsHANDLE MD5 = NULL;
292 _cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
298
299 // Save a copy of the profile header
300 memmove(&Keep, Icc, sizeof(_cmsICCPROFILE));
301
302 // Set RI, attributes and ID
303 memset(&Icc ->attributes, 0, sizeof(Icc ->attributes));
304 Icc ->RenderingIntent = 0;
305 memset(&Icc ->ProfileID, 0, sizeof(Icc ->ProfileID));
306
307 // Compute needed storage
308 if (!cmsSaveProfileToMem(hProfile, NULL, &BytesNeeded)) goto Error;
309
310 // Allocate memory
311 Mem = (cmsUInt8Number*) _cmsMalloc(ContextID, BytesNeeded);
312 if (Mem == NULL) goto Error;
313
314 // Save to temporary storage
315 if (!cmsSaveProfileToMem(hProfile, Mem, &BytesNeeded)) goto Error;
316
317 // Create MD5 object
318 MD5 = cmsMD5alloc(ContextID);
319 if (MD5 == NULL) goto Error;
320
321 // Add all bytes
322 cmsMD5add(MD5, Mem, BytesNeeded);
323
324 // Temp storage is no longer needed
325 _cmsFree(ContextID, Mem);
326
327 // Restore header
328 memmove(Icc, &Keep, sizeof(_cmsICCPROFILE));
329
330 // And store the ID
331 cmsMD5finish(&Icc ->ProfileID, MD5);
332 return TRUE;
333
334 Error:
335
336 // Free resources as something went wrong
337 // "MD5" cannot be other than NULL here, so no need to free it
338 if (Mem != NULL) _cmsFree(ContextID, Mem);
339 memmove(Icc, &Keep, sizeof(_cmsICCPROFILE));
340 return FALSE;
341 }
342
|