/* * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ // This file is available under and governed by the GNU General Public // License version 2 only, as published by the Free Software Foundation. // However, the following notice accompanied the original version of this // file: // //--------------------------------------------------------------------------------- // // Little Color Management System // Copyright (c) 1998-2012 Marti Maria Saguer // // Permission is hereby granted, free of charge, to any person obtaining // a copy of this software and associated documentation files (the "Software"), // to deal in the Software without restriction, including without limitation // the rights to use, copy, modify, merge, publish, distribute, sublicense, // and/or sell copies of the Software, and to permit persons to whom the Software // is furnished to do so, subject to the following conditions: // // The above copyright notice and this permission notice shall be included in // all copies or substantial portions of the Software. // // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO // THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. // //--------------------------------------------------------------------------------- #include "lcms2_internal.h" #ifdef CMS_USE_BIG_ENDIAN static void byteReverse(cmsUInt8Number * buf, cmsUInt32Number longs) { do { cmsUInt32Number t = _cmsAdjustEndianess32(*(cmsUInt32Number *) buf); *(cmsUInt32Number *) buf = t; buf += sizeof(cmsUInt32Number); } while (--longs); } #else #define byteReverse(buf, len) #endif typedef struct { cmsUInt32Number buf[4]; cmsUInt32Number bits[2]; cmsUInt8Number in[64]; cmsContext ContextID; } _cmsMD5; #define F1(x, y, z) (z ^ (x & (y ^ z))) #define F2(x, y, z) F1(z, x, y) #define F3(x, y, z) (x ^ y ^ z) #define F4(x, y, z) (y ^ (x | ~z)) #define STEP(f, w, x, y, z, data, s) \ ( w += f(x, y, z) + data, w = w<>(32-s), w += x ) static void MD5_Transform(cmsUInt32Number buf[4], cmsUInt32Number in[16]) { register cmsUInt32Number a, b, c, d; a = buf[0]; b = buf[1]; c = buf[2]; d = buf[3]; STEP(F1, a, b, c, d, in[0] + 0xd76aa478, 7); STEP(F1, d, a, b, c, in[1] + 0xe8c7b756, 12); STEP(F1, c, d, a, b, in[2] + 0x242070db, 17); STEP(F1, b, c, d, a, in[3] + 0xc1bdceee, 22); STEP(F1, a, b, c, d, in[4] + 0xf57c0faf, 7); STEP(F1, d, a, b, c, in[5] + 0x4787c62a, 12); STEP(F1, c, d, a, b, in[6] + 0xa8304613, 17); STEP(F1, b, c, d, a, in[7] + 0xfd469501, 22); STEP(F1, a, b, c, d, in[8] + 0x698098d8, 7); STEP(F1, d, a, b, c, in[9] + 0x8b44f7af, 12); STEP(F1, c, d, a, b, in[10] + 0xffff5bb1, 17); STEP(F1, b, c, d, a, in[11] + 0x895cd7be, 22); STEP(F1, a, b, c, d, in[12] + 0x6b901122, 7); STEP(F1, d, a, b, c, in[13] + 0xfd987193, 12); STEP(F1, c, d, a, b, in[14] + 0xa679438e, 17); STEP(F1, b, c, d, a, in[15] + 0x49b40821, 22); STEP(F2, a, b, c, d, in[1] + 0xf61e2562, 5); STEP(F2, d, a, b, c, in[6] + 0xc040b340, 9); STEP(F2, c, d, a, b, in[11] + 0x265e5a51, 14); STEP(F2, b, c, d, a, in[0] + 0xe9b6c7aa, 20); STEP(F2, a, b, c, d, in[5] + 0xd62f105d, 5); STEP(F2, d, a, b, c, in[10] + 0x02441453, 9); STEP(F2, c, d, a, b, in[15] + 0xd8a1e681, 14); STEP(F2, b, c, d, a, in[4] + 0xe7d3fbc8, 20); STEP(F2, a, b, c, d, in[9] + 0x21e1cde6, 5); STEP(F2, d, a, b, c, in[14] + 0xc33707d6, 9); STEP(F2, c, d, a, b, in[3] + 0xf4d50d87, 14); STEP(F2, b, c, d, a, in[8] + 0x455a14ed, 20); STEP(F2, a, b, c, d, in[13] + 0xa9e3e905, 5); STEP(F2, d, a, b, c, in[2] + 0xfcefa3f8, 9); STEP(F2, c, d, a, b, in[7] + 0x676f02d9, 14); STEP(F2, b, c, d, a, in[12] + 0x8d2a4c8a, 20); STEP(F3, a, b, c, d, in[5] + 0xfffa3942, 4); STEP(F3, d, a, b, c, in[8] + 0x8771f681, 11); STEP(F3, c, d, a, b, in[11] + 0x6d9d6122, 16); STEP(F3, b, c, d, a, in[14] + 0xfde5380c, 23); STEP(F3, a, b, c, d, in[1] + 0xa4beea44, 4); STEP(F3, d, a, b, c, in[4] + 0x4bdecfa9, 11); STEP(F3, c, d, a, b, in[7] + 0xf6bb4b60, 16); STEP(F3, b, c, d, a, in[10] + 0xbebfbc70, 23); STEP(F3, a, b, c, d, in[13] + 0x289b7ec6, 4); STEP(F3, d, a, b, c, in[0] + 0xeaa127fa, 11); STEP(F3, c, d, a, b, in[3] + 0xd4ef3085, 16); STEP(F3, b, c, d, a, in[6] + 0x04881d05, 23); STEP(F3, a, b, c, d, in[9] + 0xd9d4d039, 4); STEP(F3, d, a, b, c, in[12] + 0xe6db99e5, 11); STEP(F3, c, d, a, b, in[15] + 0x1fa27cf8, 16); STEP(F3, b, c, d, a, in[2] + 0xc4ac5665, 23); STEP(F4, a, b, c, d, in[0] + 0xf4292244, 6); STEP(F4, d, a, b, c, in[7] + 0x432aff97, 10); STEP(F4, c, d, a, b, in[14] + 0xab9423a7, 15); STEP(F4, b, c, d, a, in[5] + 0xfc93a039, 21); STEP(F4, a, b, c, d, in[12] + 0x655b59c3, 6); STEP(F4, d, a, b, c, in[3] + 0x8f0ccc92, 10); STEP(F4, c, d, a, b, in[10] + 0xffeff47d, 15); STEP(F4, b, c, d, a, in[1] + 0x85845dd1, 21); STEP(F4, a, b, c, d, in[8] + 0x6fa87e4f, 6); STEP(F4, d, a, b, c, in[15] + 0xfe2ce6e0, 10); STEP(F4, c, d, a, b, in[6] + 0xa3014314, 15); STEP(F4, b, c, d, a, in[13] + 0x4e0811a1, 21); STEP(F4, a, b, c, d, in[4] + 0xf7537e82, 6); STEP(F4, d, a, b, c, in[11] + 0xbd3af235, 10); STEP(F4, c, d, a, b, in[2] + 0x2ad7d2bb, 15); STEP(F4, b, c, d, a, in[9] + 0xeb86d391, 21); buf[0] += a; buf[1] += b; buf[2] += c; buf[3] += d; } // Create a MD5 object static cmsHANDLE MD5alloc(cmsContext ContextID) { _cmsMD5* ctx = (_cmsMD5*) _cmsMallocZero(ContextID, sizeof(_cmsMD5)); if (ctx == NULL) return NULL; ctx ->ContextID = ContextID; ctx->buf[0] = 0x67452301; ctx->buf[1] = 0xefcdab89; ctx->buf[2] = 0x98badcfe; ctx->buf[3] = 0x10325476; ctx->bits[0] = 0; ctx->bits[1] = 0; return (cmsHANDLE) ctx; } static void MD5add(cmsHANDLE Handle, cmsUInt8Number* buf, cmsUInt32Number len) { _cmsMD5* ctx = (_cmsMD5*) Handle; cmsUInt32Number t; t = ctx->bits[0]; if ((ctx->bits[0] = t + (len << 3)) < t) ctx->bits[1]++; ctx->bits[1] += len >> 29; t = (t >> 3) & 0x3f; if (t) { cmsUInt8Number *p = (cmsUInt8Number *) ctx->in + t; t = 64 - t; if (len < t) { memmove(p, buf, len); return; } memmove(p, buf, t); byteReverse(ctx->in, 16); MD5_Transform(ctx->buf, (cmsUInt32Number *) ctx->in); buf += t; len -= t; } while (len >= 64) { memmove(ctx->in, buf, 64); byteReverse(ctx->in, 16); MD5_Transform(ctx->buf, (cmsUInt32Number *) ctx->in); buf += 64; len -= 64; } memmove(ctx->in, buf, len); } // Destroy the object and return the checksum static void MD5finish(cmsProfileID* ProfileID, cmsHANDLE Handle) { _cmsMD5* ctx = (_cmsMD5*) Handle; cmsUInt32Number count; cmsUInt8Number *p; count = (ctx->bits[0] >> 3) & 0x3F; p = ctx->in + count; *p++ = 0x80; count = 64 - 1 - count; if (count < 8) { memset(p, 0, count); byteReverse(ctx->in, 16); MD5_Transform(ctx->buf, (cmsUInt32Number *) ctx->in); memset(ctx->in, 0, 56); } else { memset(p, 0, count - 8); } byteReverse(ctx->in, 14); ((cmsUInt32Number *) ctx->in)[14] = ctx->bits[0]; ((cmsUInt32Number *) ctx->in)[15] = ctx->bits[1]; MD5_Transform(ctx->buf, (cmsUInt32Number *) ctx->in); byteReverse((cmsUInt8Number *) ctx->buf, 4); memmove(ProfileID ->ID8, ctx->buf, 16); _cmsFree(ctx ->ContextID, ctx); } // Assuming io points to an ICC profile, compute and store MD5 checksum // In the header, rendering intentent, attributes and ID should be set to zero // before computing MD5 checksum (per 6.1.13 in ICC spec) cmsBool CMSEXPORT cmsMD5computeID(cmsHPROFILE hProfile) { cmsContext ContextID; cmsUInt32Number BytesNeeded; cmsUInt8Number* Mem = NULL; cmsHANDLE MD5 = NULL; _cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile; _cmsICCPROFILE Keep; _cmsAssert(hProfile != NULL); ContextID = cmsGetProfileContextID(hProfile); // Save a copy of the profile header memmove(&Keep, Icc, sizeof(_cmsICCPROFILE)); // Set RI, attributes and ID memset(&Icc ->attributes, 0, sizeof(Icc ->attributes)); Icc ->RenderingIntent = 0; memset(&Icc ->ProfileID, 0, sizeof(Icc ->ProfileID)); // Compute needed storage if (!cmsSaveProfileToMem(hProfile, NULL, &BytesNeeded)) goto Error; // Allocate memory Mem = (cmsUInt8Number*) _cmsMalloc(ContextID, BytesNeeded); if (Mem == NULL) goto Error; // Save to temporary storage if (!cmsSaveProfileToMem(hProfile, Mem, &BytesNeeded)) goto Error; // Create MD5 object MD5 = MD5alloc(ContextID); if (MD5 == NULL) goto Error; // Add all bytes MD5add(MD5, Mem, BytesNeeded); // Temp storage is no longer needed _cmsFree(ContextID, Mem); // Restore header memmove(Icc, &Keep, sizeof(_cmsICCPROFILE)); // And store the ID MD5finish(&Icc ->ProfileID, MD5); return TRUE; Error: // Free resources as something went wrong if (MD5 != NULL) _cmsFree(ContextID, MD5); if (Mem != NULL) _cmsFree(ContextID, Mem); memmove(Icc, &Keep, sizeof(_cmsICCPROFILE)); return FALSE; }