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1.1 misho 1: 2: /* 3: * Copyright (c) 2001-2002 Packet Design, LLC. 4: * All rights reserved. 5: * 6: * Subject to the following obligations and disclaimer of warranty, 7: * use and redistribution of this software, in source or object code 8: * forms, with or without modifications are expressly permitted by 9: * Packet Design; provided, however, that: 10: * 11: * (i) Any and all reproductions of the source or object code 12: * must include the copyright notice above and the following 13: * disclaimer of warranties; and 14: * (ii) No rights are granted, in any manner or form, to use 15: * Packet Design trademarks, including the mark "PACKET DESIGN" 16: * on advertising, endorsements, or otherwise except as such 17: * appears in the above copyright notice or in the software. 18: * 19: * THIS SOFTWARE IS BEING PROVIDED BY PACKET DESIGN "AS IS", AND 20: * TO THE MAXIMUM EXTENT PERMITTED BY LAW, PACKET DESIGN MAKES NO 21: * REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, REGARDING 22: * THIS SOFTWARE, INCLUDING WITHOUT LIMITATION, ANY AND ALL IMPLIED 23: * WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, 24: * OR NON-INFRINGEMENT. PACKET DESIGN DOES NOT WARRANT, GUARANTEE, 25: * OR MAKE ANY REPRESENTATIONS REGARDING THE USE OF, OR THE RESULTS 26: * OF THE USE OF THIS SOFTWARE IN TERMS OF ITS CORRECTNESS, ACCURACY, 27: * RELIABILITY OR OTHERWISE. IN NO EVENT SHALL PACKET DESIGN BE 28: * LIABLE FOR ANY DAMAGES RESULTING FROM OR ARISING OUT OF ANY USE 29: * OF THIS SOFTWARE, INCLUDING WITHOUT LIMITATION, ANY DIRECT, 30: * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, PUNITIVE, OR CONSEQUENTIAL 31: * DAMAGES, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, LOSS OF 32: * USE, DATA OR PROFITS, HOWEVER CAUSED AND UNDER ANY THEORY OF 33: * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 34: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 35: * THE USE OF THIS SOFTWARE, EVEN IF PACKET DESIGN IS ADVISED OF 36: * THE POSSIBILITY OF SUCH DAMAGE. 37: * 38: * Author: Archie Cobbs <archie@freebsd.org> 39: */ 40: 41: #include <sys/types.h> 42: #ifdef __linux__ 43: #include <endian.h> 44: #else 45: #include <machine/endian.h> 46: #endif 47: 48: #include <stdio.h> 49: #include <stdlib.h> 50: #include <stdarg.h> 51: #include <string.h> 52: #include <errno.h> 53: 54: #include "structs/structs.h" 55: #include "structs/type/array.h" 56: #include "util/typed_mem.h" 57: 58: #ifndef BYTE_ORDER 59: #error BYTE_ORDER is undefined 60: #endif 61: 62: /********************************************************************* 63: GENERIC FUNCTIONS 64: *********************************************************************/ 65: 66: int 67: structs_region_init(const struct structs_type *type, void *data) 68: { 69: memset(data, 0, type->size); 70: return (0); 71: } 72: 73: int 74: structs_region_copy(const struct structs_type *type, const void *from, void *to) 75: { 76: memcpy(to, from, type->size); 77: return (0); 78: } 79: 80: int 81: structs_region_equal(const struct structs_type *type, 82: const void *v1, const void *v2) 83: { 84: return (memcmp(v1, v2, type->size) == 0); 85: } 86: 87: int 88: structs_region_encode(const struct structs_type *type, const char *mtype, 89: struct structs_data *code, const void *data) 90: { 91: if ((code->data = MALLOC(mtype, type->size)) == NULL) 92: return (-1); 93: memcpy(code->data, data, type->size); 94: code->length = type->size; 95: return (0); 96: } 97: 98: int 99: structs_region_decode(const struct structs_type *type, 100: const u_char *code, size_t cmax, void *data, char *ebuf, size_t emax) 101: { 102: if (cmax < type->size) { 103: strlcpy(ebuf, "encoded data is truncated", emax); 104: errno = EINVAL; 105: return (-1); 106: } 107: memcpy(data, code, type->size); 108: return (type->size); 109: } 110: 111: int 112: structs_region_encode_netorder(const struct structs_type *type, 113: const char *mtype, struct structs_data *code, const void *data) 114: { 115: if (structs_region_encode(type, mtype, code, data) == -1) 116: return (-1); 117: #if BYTE_ORDER == LITTLE_ENDIAN 118: { 119: u_char temp; 120: u_int i; 121: 122: for (i = 0; i < code->length / 2; i++) { 123: temp = code->data[i]; 124: code->data[i] = code->data[code->length - 1 - i]; 125: code->data[code->length - 1 - i] = temp; 126: } 127: } 128: #endif 129: return (0); 130: } 131: 132: int 133: structs_region_decode_netorder(const struct structs_type *type, 134: const u_char *code, size_t cmax, void *data, char *ebuf, size_t emax) 135: { 136: #if BYTE_ORDER == LITTLE_ENDIAN 137: u_char buf[16]; 138: u_char temp; 139: u_int i; 140: 141: if (type->size > sizeof(buf)) { 142: errno = ERANGE; /* XXX oops fixed buffer is too small */ 143: return (-1); 144: } 145: if (cmax > type->size) 146: cmax = type->size; 147: memcpy(buf, code, cmax); 148: for (i = 0; i < type->size / 2; i++) { 149: temp = buf[i]; 150: buf[i] = buf[type->size - 1 - i]; 151: buf[type->size - 1 - i] = temp; 152: } 153: code = buf; 154: #endif 155: return (structs_region_decode(type, code, cmax, data, ebuf, emax)); 156: } 157: 158: char * 159: structs_notsupp_ascify(const struct structs_type *type, 160: const char *mtype, const void *data) 161: { 162: errno = EOPNOTSUPP; 163: return (NULL); 164: } 165: 166: int 167: structs_notsupp_init(const struct structs_type *type, void *data) 168: { 169: errno = EOPNOTSUPP; 170: return (-1); 171: } 172: 173: int 174: structs_notsupp_copy(const struct structs_type *type, 175: const void *from, void *to) 176: { 177: errno = EOPNOTSUPP; 178: return (-1); 179: } 180: 181: int 182: structs_notsupp_equal(const struct structs_type *type, 183: const void *v1, const void *v2) 184: { 185: errno = EOPNOTSUPP; 186: return (-1); 187: } 188: 189: 190: int 191: structs_notsupp_binify(const struct structs_type *type, 192: const char *ascii, void *data, char *ebuf, size_t emax) 193: { 194: strlcpy(ebuf, 195: "parsing from ASCII is not supported by this structs type", emax); 196: errno = EOPNOTSUPP; 197: return (-1); 198: } 199: 200: int 201: structs_notsupp_encode(const struct structs_type *type, const char *mtype, 202: struct structs_data *code, const void *data) 203: { 204: errno = EOPNOTSUPP; 205: return (-1); 206: } 207: 208: int 209: structs_notsupp_decode(const struct structs_type *type, 210: const u_char *code, size_t cmax, void *data, char *ebuf, size_t emax) 211: { 212: strlcpy(ebuf, 213: "binary decoding is not supported by this structs type", emax); 214: errno = EOPNOTSUPP; 215: return (-1); 216: } 217: 218: void 219: structs_nothing_free(const struct structs_type *type, void *data) 220: { 221: return; 222: } 223: 224: int 225: structs_ascii_copy(const struct structs_type *type, const void *from, void *to) 226: { 227: char *ascii; 228: int rtn; 229: 230: if ((ascii = (*type->ascify)(type, TYPED_MEM_TEMP, from)) == NULL) 231: return (-1); 232: rtn = (*type->binify)(type, ascii, to, NULL, 0); 233: FREE(TYPED_MEM_TEMP, ascii); 234: return (rtn); 235: } 236: