/* WARNING: This file was generated by dkct. Changes you make here will be lost if dkct is run again! You should modify the original source and run dkct on it. Original source: dk4binenc.ctr */ /* Copyright (C) 2015-2017, Dirk Krause Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. * Redistributions in binary form must reproduce the above opyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. * Neither the name of the author nor the names of contributors may be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ /** @file dk4binenc.c The dk4binenc module. */ #line 94 "dk4binenc.ctr" #include "dk4binenc.h" #include "dk4mem.h" #include "dk4memrs.h" #include "dk4a85e.h" #include "dk4maasz.h" #include "dk4strd.h" #include "dk4edstm.h" #line 106 "dk4binenc.ctr" /** Hexadecimal digits. */ static const char dk4binenc_hex_digits[] = { "0123456789abcdef" }; /** Message digest type names. Order must match the definition order in the enum in dk4md.h. */ static const dkChar * const dk4binenc_encoding_names[] = { /* 0 */ dkT("bin"), /* 1 */ dkT("binary"), /* 2 */ dkT("hex"), /* 3 */ dkT("hexa"), /* 4 */ dkT("hexadecimal"), /* 5 */ dkT("ascii-85"), /* 6 */ dkT("ascii85"), /* 7 */ dkT("a85"), NULL #line 129 "dk4binenc.ctr" }; int dk4binenc( char *dptr, size_t szdptr, const void *sptr, size_t szsptr, int enc, dk4_er_t *erp ) { dk4_a85_enc_t a85; dk4_er_t maerr; const unsigned char *ucptr; const char *resptr; size_t ressize; size_t oused; size_t noused; int back = 0; if ((NULL != dptr) && (NULL != sptr) && (0 < szdptr) && (0 < szsptr)) { switch (enc) { case DK4_BINARY_TO_TEXT_ENCODING_NONE : { if (szdptr >= szsptr) { DK4_MEMCPY(dptr, sptr, szsptr); back = 1; } else { dk4error_set_simple_error_code(erp, DK4_E_BUFFER_TOO_SMALL); } } break; case DK4_BINARY_TO_TEXT_ENCODING_HEX : { oused = 0; ucptr = (const unsigned char *)sptr; while (szsptr--) { dk4error_init(&maerr); noused = dk4ma_size_t_add(oused, 2, &maerr); if (DK4_E_NONE == maerr.ec) { dptr[oused] = dk4binenc_hex_digits[(size_t)((((unsigned)(*ucptr)) >> 4) & 0x0FU)]; dptr[oused+1] = dk4binenc_hex_digits[(size_t)(((unsigned)(*ucptr)) & 0x0FU)]; oused = noused; } else { dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW); goto finished; } ucptr++; } if (oused < szdptr) { dptr[oused] = '\0'; back = 1; } else { dk4error_set_simple_error_code(erp, DK4_E_BUFFER_TOO_SMALL); } } break; case DK4_BINARY_TO_TEXT_ENCODING_A85 : { oused = 0; ucptr = (const unsigned char *)sptr; dk4a85_enc_init(&a85, 0, erp); while(szsptr--) { switch (dk4a85_enc_add(&a85, *(ucptr++), erp)) { case DK4_EDSTM_FINISHED : { resptr = NULL; ressize = 0; (void)dk4a85_enc_output(&resptr, &ressize, &a85, NULL); if ((NULL != resptr) && (0 < ressize)) { dk4error_init(&maerr); noused = dk4ma_size_t_add(oused, ressize, &maerr); if (DK4_E_NONE == maerr.ec) { if (noused < szdptr) { DK4_MEMCPY(&(dptr[oused]), resptr, ressize); oused = noused; } else { dk4error_set_simple_error_code(erp, DK4_E_BUFFER_TOO_SMALL); goto finished; } } else { dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW); goto finished; } } } break; case DK4_EDSTM_ERROR : { dk4error_set_simple_error_code(erp, DK4_E_ENCODING_FAILED); goto finished; } break; } } switch (dk4a85_enc_finish(&a85, erp)) { case DK4_EDSTM_FINISHED : { resptr = NULL; ressize = 0; (void)dk4a85_enc_output(&resptr, &ressize, &a85, NULL); if ((NULL != resptr) && (0 < ressize)) { dk4error_init(&maerr); noused = dk4ma_size_t_add(oused, ressize, &maerr); if (DK4_E_NONE == maerr.ec) { if (noused < szdptr) { DK4_MEMCPY(&(dptr[oused]), resptr, ressize); oused = noused; } else { dk4error_set_simple_error_code(erp, DK4_E_BUFFER_TOO_SMALL); goto finished; } } else { dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW); goto finished; } } } break; case DK4_EDSTM_ERROR : { dk4error_set_simple_error_code(erp, DK4_E_ENCODING_FAILED); goto finished; } break; } if (oused < szdptr) { dptr[oused] = '\0'; back = 1; } else { dk4error_set_simple_error_code(erp, DK4_E_BUFFER_TOO_SMALL); } (void)dk4mem_reset_secure(&a85, sizeof(dk4_a85_enc_t), NULL); } break; default : { dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS); } break; } } else { dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS); } finished: if ((NULL != dptr) && (0 == back)) { *dptr = '\0'; } return back; } int dk4binenc_choose_encoding(const dkChar *name, dk4_er_t *erp) { int back = -1; if (NULL != name) { switch (dk4str_array_index(dk4binenc_encoding_names, name, 0)) { case 0: case 1: { back = DK4_BINARY_TO_TEXT_ENCODING_NONE; } break; case 2: case 3: case 4: { back = DK4_BINARY_TO_TEXT_ENCODING_HEX; } break; case 5: case 6: case 7: { back = DK4_BINARY_TO_TEXT_ENCODING_A85; } break; } if (-1 == back) { dk4error_set_simple_error_code(erp, DK4_E_SYNTAX); } } else { dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS); } return back; }