Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 1 | /*- |
| 2 | * Copyright (c) 2003, 2004 Lev Walkin <vlm@lionet.info>. All rights reserved. |
| 3 | * Redistribution and modifications are permitted subject to BSD license. |
| 4 | */ |
Lev Walkin | a9cc46e | 2004-09-22 16:06:28 +0000 | [diff] [blame] | 5 | #include <asn_internal.h> |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 6 | #include <OBJECT_IDENTIFIER.h> |
Lev Walkin | 725883b | 2006-10-09 12:07:58 +0000 | [diff] [blame] | 7 | #include <OCTET_STRING.h> |
Lev Walkin | 29a044b | 2004-06-14 07:24:36 +0000 | [diff] [blame] | 8 | #include <limits.h> /* for CHAR_BIT */ |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 9 | #include <errno.h> |
| 10 | |
| 11 | /* |
| 12 | * OBJECT IDENTIFIER basic type description. |
| 13 | */ |
Lev Walkin | 5e03376 | 2004-09-29 13:26:15 +0000 | [diff] [blame] | 14 | static ber_tlv_tag_t asn_DEF_OBJECT_IDENTIFIER_tags[] = { |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 15 | (ASN_TAG_CLASS_UNIVERSAL | (6 << 2)) |
| 16 | }; |
Lev Walkin | 5e03376 | 2004-09-29 13:26:15 +0000 | [diff] [blame] | 17 | asn_TYPE_descriptor_t asn_DEF_OBJECT_IDENTIFIER = { |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 18 | "OBJECT IDENTIFIER", |
Lev Walkin | dc06f6b | 2004-10-20 15:50:55 +0000 | [diff] [blame] | 19 | "OBJECT_IDENTIFIER", |
Lev Walkin | 8e8078a | 2004-09-26 13:10:40 +0000 | [diff] [blame] | 20 | ASN__PRIMITIVE_TYPE_free, |
Lev Walkin | a9cc46e | 2004-09-22 16:06:28 +0000 | [diff] [blame] | 21 | OBJECT_IDENTIFIER_print, |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 22 | OBJECT_IDENTIFIER_constraint, |
Lev Walkin | 8e8078a | 2004-09-26 13:10:40 +0000 | [diff] [blame] | 23 | ber_decode_primitive, |
| 24 | der_encode_primitive, |
Lev Walkin | 9230225 | 2004-10-23 10:16:51 +0000 | [diff] [blame] | 25 | OBJECT_IDENTIFIER_decode_xer, |
Lev Walkin | a9cc46e | 2004-09-22 16:06:28 +0000 | [diff] [blame] | 26 | OBJECT_IDENTIFIER_encode_xer, |
Lev Walkin | 725883b | 2006-10-09 12:07:58 +0000 | [diff] [blame] | 27 | OCTET_STRING_decode_uper, |
| 28 | OCTET_STRING_encode_uper, |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 29 | 0, /* Use generic outmost tag fetcher */ |
Lev Walkin | 5e03376 | 2004-09-29 13:26:15 +0000 | [diff] [blame] | 30 | asn_DEF_OBJECT_IDENTIFIER_tags, |
| 31 | sizeof(asn_DEF_OBJECT_IDENTIFIER_tags) |
| 32 | / sizeof(asn_DEF_OBJECT_IDENTIFIER_tags[0]), |
| 33 | asn_DEF_OBJECT_IDENTIFIER_tags, /* Same as above */ |
| 34 | sizeof(asn_DEF_OBJECT_IDENTIFIER_tags) |
| 35 | / sizeof(asn_DEF_OBJECT_IDENTIFIER_tags[0]), |
Lev Walkin | 59b176e | 2005-11-26 11:25:14 +0000 | [diff] [blame] | 36 | 0, /* No PER visible constraints */ |
Lev Walkin | 449f832 | 2004-08-20 13:23:42 +0000 | [diff] [blame] | 37 | 0, 0, /* No members */ |
Lev Walkin | d9bd775 | 2004-06-05 08:17:50 +0000 | [diff] [blame] | 38 | 0 /* No specifics */ |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 39 | }; |
| 40 | |
| 41 | |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 42 | int |
Lev Walkin | 5e03376 | 2004-09-29 13:26:15 +0000 | [diff] [blame] | 43 | OBJECT_IDENTIFIER_constraint(asn_TYPE_descriptor_t *td, const void *sptr, |
Lev Walkin | 1eded35 | 2006-07-13 11:19:01 +0000 | [diff] [blame] | 44 | asn_app_constraint_failed_f *ctfailcb, void *app_key) { |
Lev Walkin | c234657 | 2004-08-11 09:07:36 +0000 | [diff] [blame] | 45 | const OBJECT_IDENTIFIER_t *st = (const OBJECT_IDENTIFIER_t *)sptr; |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 46 | |
| 47 | if(st && st->buf) { |
| 48 | if(st->size < 1) { |
Lev Walkin | ed9019a | 2006-10-16 12:18:41 +0000 | [diff] [blame] | 49 | _ASN_CTFAIL(app_key, td, sptr, |
Lev Walkin | 16835b6 | 2004-08-22 13:47:59 +0000 | [diff] [blame] | 50 | "%s: at least one numerical value " |
| 51 | "expected (%s:%d)", |
| 52 | td->name, __FILE__, __LINE__); |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 53 | return -1; |
| 54 | } |
| 55 | } else { |
Lev Walkin | ed9019a | 2006-10-16 12:18:41 +0000 | [diff] [blame] | 56 | _ASN_CTFAIL(app_key, td, sptr, |
Lev Walkin | 16835b6 | 2004-08-22 13:47:59 +0000 | [diff] [blame] | 57 | "%s: value not given (%s:%d)", |
| 58 | td->name, __FILE__, __LINE__); |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 59 | return -1; |
| 60 | } |
| 61 | |
| 62 | return 0; |
| 63 | } |
| 64 | |
Lev Walkin | c4c6196 | 2004-06-14 08:17:27 +0000 | [diff] [blame] | 65 | |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 66 | int |
Lev Walkin | 8e8078a | 2004-09-26 13:10:40 +0000 | [diff] [blame] | 67 | OBJECT_IDENTIFIER_get_single_arc(uint8_t *arcbuf, unsigned int arclen, signed int add, void *rvbufp, unsigned int rvsize) { |
Lev Walkin | 50b0f6c | 2006-10-16 12:01:36 +0000 | [diff] [blame] | 68 | unsigned LE GCC_NOTUSED = 1; /* Little endian (x86) */ |
Lev Walkin | 29a044b | 2004-06-14 07:24:36 +0000 | [diff] [blame] | 69 | uint8_t *arcend = arcbuf + arclen; /* End of arc */ |
Lev Walkin | 29a044b | 2004-06-14 07:24:36 +0000 | [diff] [blame] | 70 | unsigned int cache = 0; /* No more than 14 significant bits */ |
Lev Walkin | 8e8078a | 2004-09-26 13:10:40 +0000 | [diff] [blame] | 71 | unsigned char *rvbuf = (unsigned char *)rvbufp; |
| 72 | unsigned char *rvstart = rvbuf; /* Original start of the value buffer */ |
Lev Walkin | 29a044b | 2004-06-14 07:24:36 +0000 | [diff] [blame] | 73 | int inc; /* Return value growth direction */ |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 74 | |
Lev Walkin | 29a044b | 2004-06-14 07:24:36 +0000 | [diff] [blame] | 75 | rvsize *= CHAR_BIT; /* bytes to bits */ |
| 76 | arclen *= 7; /* bytes to bits */ |
| 77 | |
| 78 | /* |
| 79 | * The arc has the number of bits |
| 80 | * cannot be represented using supplied return value type. |
| 81 | */ |
| 82 | if(arclen > rvsize) { |
| 83 | if(arclen > (rvsize + CHAR_BIT)) { |
| 84 | errno = ERANGE; /* Overflow */ |
| 85 | return -1; |
| 86 | } else { |
| 87 | /* |
| 88 | * Even if the number of bits in the arc representation |
| 89 | * is higher than the width of supplied * return value |
| 90 | * type, there is still possible to fit it when there |
| 91 | * are few unused high bits in the arc value |
| 92 | * representaion. |
Lev Walkin | 0787ff0 | 2004-06-17 23:43:39 +0000 | [diff] [blame] | 93 | * |
| 94 | * Moreover, there is a possibility that the |
| 95 | * number could actually fit the arc space, given |
| 96 | * that add is negative, but we don't handle |
| 97 | * such "temporary lack of precision" situation here. |
| 98 | * May be considered as a bug. |
Lev Walkin | 29a044b | 2004-06-14 07:24:36 +0000 | [diff] [blame] | 99 | */ |
| 100 | uint8_t mask = (0xff << (7-(arclen - rvsize))) & 0x7f; |
| 101 | if((*arcbuf & mask)) { |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 102 | errno = ERANGE; /* Overflow */ |
| 103 | return -1; |
| 104 | } |
Lev Walkin | 29a044b | 2004-06-14 07:24:36 +0000 | [diff] [blame] | 105 | /* Fool the routine computing unused bits */ |
| 106 | arclen -= 7; |
| 107 | cache = *arcbuf & 0x7f; |
| 108 | arcbuf++; |
| 109 | } |
| 110 | } |
| 111 | |
Lev Walkin | c4c6196 | 2004-06-14 08:17:27 +0000 | [diff] [blame] | 112 | /* Faster path for common size */ |
| 113 | if(rvsize == (CHAR_BIT * sizeof(unsigned long))) { |
| 114 | unsigned long accum; |
| 115 | /* Gather all bits into the accumulator */ |
| 116 | for(accum = cache; arcbuf < arcend; arcbuf++) |
| 117 | accum = (accum << 7) | (*arcbuf & ~0x80); |
| 118 | if(accum < (unsigned)-add) { |
| 119 | errno = ERANGE; /* Overflow */ |
| 120 | return -1; |
| 121 | } |
Lev Walkin | 8e8078a | 2004-09-26 13:10:40 +0000 | [diff] [blame] | 122 | *(unsigned long *)rvbuf = accum + add; /* alignment OK! */ |
Lev Walkin | c4c6196 | 2004-06-14 08:17:27 +0000 | [diff] [blame] | 123 | return 0; |
| 124 | } |
| 125 | |
Lev Walkin | 29a044b | 2004-06-14 07:24:36 +0000 | [diff] [blame] | 126 | #ifndef WORDS_BIGENDIAN |
| 127 | if(*(unsigned char *)&LE) { /* Little endian (x86) */ |
| 128 | /* "Convert" to big endian */ |
Lev Walkin | 8e8078a | 2004-09-26 13:10:40 +0000 | [diff] [blame] | 129 | rvbuf += rvsize / CHAR_BIT - 1; |
| 130 | rvstart--; |
Lev Walkin | 29a044b | 2004-06-14 07:24:36 +0000 | [diff] [blame] | 131 | inc = -1; /* Descending */ |
Lev Walkin | c4c6196 | 2004-06-14 08:17:27 +0000 | [diff] [blame] | 132 | } else |
Lev Walkin | 29a044b | 2004-06-14 07:24:36 +0000 | [diff] [blame] | 133 | #endif /* !WORDS_BIGENDIAN */ |
Lev Walkin | c4c6196 | 2004-06-14 08:17:27 +0000 | [diff] [blame] | 134 | inc = +1; /* Big endian is known [at compile time] */ |
Lev Walkin | 29a044b | 2004-06-14 07:24:36 +0000 | [diff] [blame] | 135 | |
Lev Walkin | c4c6196 | 2004-06-14 08:17:27 +0000 | [diff] [blame] | 136 | { |
Lev Walkin | 0787ff0 | 2004-06-17 23:43:39 +0000 | [diff] [blame] | 137 | int bits; /* typically no more than 3-4 bits */ |
Lev Walkin | c4c6196 | 2004-06-14 08:17:27 +0000 | [diff] [blame] | 138 | |
Lev Walkin | 29a044b | 2004-06-14 07:24:36 +0000 | [diff] [blame] | 139 | /* Clear the high unused bits */ |
| 140 | for(bits = rvsize - arclen; |
| 141 | bits > CHAR_BIT; |
Lev Walkin | 8e8078a | 2004-09-26 13:10:40 +0000 | [diff] [blame] | 142 | rvbuf += inc, bits -= CHAR_BIT) |
| 143 | *rvbuf = 0; |
Lev Walkin | c4c6196 | 2004-06-14 08:17:27 +0000 | [diff] [blame] | 144 | |
Lev Walkin | 29a044b | 2004-06-14 07:24:36 +0000 | [diff] [blame] | 145 | /* Fill the body of a value */ |
| 146 | for(; arcbuf < arcend; arcbuf++) { |
| 147 | cache = (cache << 7) | (*arcbuf & 0x7f); |
| 148 | bits += 7; |
| 149 | if(bits >= CHAR_BIT) { |
| 150 | bits -= CHAR_BIT; |
Lev Walkin | 8e8078a | 2004-09-26 13:10:40 +0000 | [diff] [blame] | 151 | *rvbuf = (cache >> bits); |
| 152 | rvbuf += inc; |
Lev Walkin | 29a044b | 2004-06-14 07:24:36 +0000 | [diff] [blame] | 153 | } |
| 154 | } |
| 155 | if(bits) { |
Lev Walkin | 8e8078a | 2004-09-26 13:10:40 +0000 | [diff] [blame] | 156 | *rvbuf = cache; |
| 157 | rvbuf += inc; |
Lev Walkin | 29a044b | 2004-06-14 07:24:36 +0000 | [diff] [blame] | 158 | } |
| 159 | } |
| 160 | |
| 161 | if(add) { |
Lev Walkin | 8e8078a | 2004-09-26 13:10:40 +0000 | [diff] [blame] | 162 | for(rvbuf -= inc; rvbuf != rvstart; rvbuf -= inc) { |
| 163 | int v = add + *rvbuf; |
Lev Walkin | 29a044b | 2004-06-14 07:24:36 +0000 | [diff] [blame] | 164 | if(v & (-1 << CHAR_BIT)) { |
Lev Walkin | 8e8078a | 2004-09-26 13:10:40 +0000 | [diff] [blame] | 165 | *rvbuf = (unsigned char)(v + (1 << CHAR_BIT)); |
Lev Walkin | 29a044b | 2004-06-14 07:24:36 +0000 | [diff] [blame] | 166 | add = -1; |
| 167 | } else { |
Lev Walkin | 8e8078a | 2004-09-26 13:10:40 +0000 | [diff] [blame] | 168 | *rvbuf = v; |
Lev Walkin | 29a044b | 2004-06-14 07:24:36 +0000 | [diff] [blame] | 169 | break; |
| 170 | } |
| 171 | } |
| 172 | if(rvbuf == rvstart) { |
| 173 | /* No space to carry over */ |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 174 | errno = ERANGE; /* Overflow */ |
| 175 | return -1; |
| 176 | } |
| 177 | } |
| 178 | |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 179 | return 0; |
| 180 | } |
| 181 | |
Lev Walkin | a9cc46e | 2004-09-22 16:06:28 +0000 | [diff] [blame] | 182 | ssize_t |
| 183 | OBJECT_IDENTIFIER__dump_arc(uint8_t *arcbuf, int arclen, int add, |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 184 | asn_app_consume_bytes_f *cb, void *app_key) { |
| 185 | char scratch[64]; /* Conservative estimate */ |
| 186 | unsigned long accum; /* Bits accumulator */ |
| 187 | char *p; /* Position in the scratch buffer */ |
| 188 | |
Lev Walkin | 29a044b | 2004-06-14 07:24:36 +0000 | [diff] [blame] | 189 | if(OBJECT_IDENTIFIER_get_single_arc(arcbuf, arclen, add, |
| 190 | &accum, sizeof(accum))) |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 191 | return -1; |
| 192 | |
Lev Walkin | 3251b8e | 2004-08-23 09:23:02 +0000 | [diff] [blame] | 193 | if(accum) { |
Lev Walkin | a9cc46e | 2004-09-22 16:06:28 +0000 | [diff] [blame] | 194 | ssize_t len; |
| 195 | |
Lev Walkin | 3251b8e | 2004-08-23 09:23:02 +0000 | [diff] [blame] | 196 | /* Fill the scratch buffer in reverse. */ |
| 197 | p = scratch + sizeof(scratch); |
| 198 | for(; accum; accum /= 10) |
Lev Walkin | a9cc46e | 2004-09-22 16:06:28 +0000 | [diff] [blame] | 199 | *(--p) = (char)(accum % 10) + 0x30; /* Put a digit */ |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 200 | |
Lev Walkin | a9cc46e | 2004-09-22 16:06:28 +0000 | [diff] [blame] | 201 | len = sizeof(scratch) - (p - scratch); |
| 202 | if(cb(p, len, app_key) < 0) |
| 203 | return -1; |
| 204 | return len; |
Lev Walkin | 3251b8e | 2004-08-23 09:23:02 +0000 | [diff] [blame] | 205 | } else { |
| 206 | *scratch = 0x30; |
Lev Walkin | a9cc46e | 2004-09-22 16:06:28 +0000 | [diff] [blame] | 207 | if(cb(scratch, 1, app_key) < 0) |
| 208 | return -1; |
| 209 | return 1; |
Lev Walkin | 3251b8e | 2004-08-23 09:23:02 +0000 | [diff] [blame] | 210 | } |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 211 | } |
| 212 | |
| 213 | int |
Lev Walkin | a9cc46e | 2004-09-22 16:06:28 +0000 | [diff] [blame] | 214 | OBJECT_IDENTIFIER_print_arc(uint8_t *arcbuf, int arclen, int add, |
| 215 | asn_app_consume_bytes_f *cb, void *app_key) { |
| 216 | |
| 217 | if(OBJECT_IDENTIFIER__dump_arc(arcbuf, arclen, add, cb, app_key) < 0) |
| 218 | return -1; |
| 219 | |
| 220 | return 0; |
| 221 | } |
| 222 | |
| 223 | static ssize_t |
| 224 | OBJECT_IDENTIFIER__dump_body(const OBJECT_IDENTIFIER_t *st, asn_app_consume_bytes_f *cb, void *app_key) { |
| 225 | ssize_t wrote_len = 0; |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 226 | int startn; |
| 227 | int add = 0; |
| 228 | int i; |
| 229 | |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 230 | for(i = 0, startn = 0; i < st->size; i++) { |
| 231 | uint8_t b = st->buf[i]; |
| 232 | if((b & 0x80)) /* Continuation expected */ |
| 233 | continue; |
| 234 | |
| 235 | if(startn == 0) { |
| 236 | /* |
| 237 | * First two arcs are encoded through the backdoor. |
| 238 | */ |
| 239 | if(i) { |
| 240 | add = -80; |
Lev Walkin | a9cc46e | 2004-09-22 16:06:28 +0000 | [diff] [blame] | 241 | if(cb("2", 1, app_key) < 0) return -1; |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 242 | } else if(b <= 39) { |
| 243 | add = 0; |
Lev Walkin | a9cc46e | 2004-09-22 16:06:28 +0000 | [diff] [blame] | 244 | if(cb("0", 1, app_key) < 0) return -1; |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 245 | } else if(b < 79) { |
| 246 | add = -40; |
Lev Walkin | a9cc46e | 2004-09-22 16:06:28 +0000 | [diff] [blame] | 247 | if(cb("1", 1, app_key) < 0) return -1; |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 248 | } else { |
| 249 | add = -80; |
Lev Walkin | a9cc46e | 2004-09-22 16:06:28 +0000 | [diff] [blame] | 250 | if(cb("2", 1, app_key) < 0) return -1; |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 251 | } |
Lev Walkin | a9cc46e | 2004-09-22 16:06:28 +0000 | [diff] [blame] | 252 | wrote_len += 1; |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 253 | } |
| 254 | |
Lev Walkin | a9cc46e | 2004-09-22 16:06:28 +0000 | [diff] [blame] | 255 | if(cb(".", 1, app_key) < 0) /* Separate arcs */ |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 256 | return -1; |
| 257 | |
Lev Walkin | a9cc46e | 2004-09-22 16:06:28 +0000 | [diff] [blame] | 258 | add = OBJECT_IDENTIFIER__dump_arc(&st->buf[startn], |
| 259 | i - startn + 1, add, cb, app_key); |
| 260 | if(add < 0) return -1; |
| 261 | wrote_len += 1 + add; |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 262 | startn = i + 1; |
| 263 | add = 0; |
| 264 | } |
| 265 | |
Lev Walkin | a9cc46e | 2004-09-22 16:06:28 +0000 | [diff] [blame] | 266 | return wrote_len; |
| 267 | } |
| 268 | |
Lev Walkin | 0fab1a6 | 2005-03-09 22:19:25 +0000 | [diff] [blame] | 269 | static enum xer_pbd_rval |
| 270 | OBJECT_IDENTIFIER__xer_body_decode(asn_TYPE_descriptor_t *td, void *sptr, const void *chunk_buf, size_t chunk_size) { |
Lev Walkin | 9230225 | 2004-10-23 10:16:51 +0000 | [diff] [blame] | 271 | OBJECT_IDENTIFIER_t *st = (OBJECT_IDENTIFIER_t *)sptr; |
Lev Walkin | 2c34aad | 2005-03-10 11:50:24 +0000 | [diff] [blame] | 272 | const char *chunk_end = (const char *)chunk_buf + chunk_size; |
| 273 | const char *endptr; |
Lev Walkin | 9230225 | 2004-10-23 10:16:51 +0000 | [diff] [blame] | 274 | long s_arcs[10]; |
| 275 | long *arcs = s_arcs; |
| 276 | int arcs_count; |
| 277 | int ret; |
| 278 | |
Lev Walkin | e0b56e0 | 2005-02-25 12:10:27 +0000 | [diff] [blame] | 279 | (void)td; |
| 280 | |
Lev Walkin | 9230225 | 2004-10-23 10:16:51 +0000 | [diff] [blame] | 281 | arcs_count = OBJECT_IDENTIFIER_parse_arcs( |
Lev Walkin | 0fab1a6 | 2005-03-09 22:19:25 +0000 | [diff] [blame] | 282 | (const char *)chunk_buf, chunk_size, arcs, |
| 283 | sizeof(s_arcs)/sizeof(s_arcs[0]), &endptr); |
| 284 | if(arcs_count <= 0) { |
| 285 | /* Expecting more than zero arcs */ |
| 286 | return XPBD_BROKEN_ENCODING; |
| 287 | } |
Lev Walkin | 2c34aad | 2005-03-10 11:50:24 +0000 | [diff] [blame] | 288 | if(endptr < chunk_end) { |
| 289 | /* We have a tail of unrecognized data. Check its safety. */ |
| 290 | if(!xer_is_whitespace(endptr, chunk_end - endptr)) |
| 291 | return XPBD_BROKEN_ENCODING; |
| 292 | } |
Lev Walkin | 0fab1a6 | 2005-03-09 22:19:25 +0000 | [diff] [blame] | 293 | |
| 294 | if((size_t)arcs_count > sizeof(s_arcs)/sizeof(s_arcs[0])) { |
Lev Walkin | 9230225 | 2004-10-23 10:16:51 +0000 | [diff] [blame] | 295 | arcs = (long *)MALLOC(arcs_count * sizeof(long)); |
Lev Walkin | 0fab1a6 | 2005-03-09 22:19:25 +0000 | [diff] [blame] | 296 | if(!arcs) return XPBD_SYSTEM_FAILURE; |
Lev Walkin | 9230225 | 2004-10-23 10:16:51 +0000 | [diff] [blame] | 297 | ret = OBJECT_IDENTIFIER_parse_arcs( |
| 298 | (const char *)chunk_buf, chunk_size, |
| 299 | arcs, arcs_count, &endptr); |
| 300 | if(ret != arcs_count) |
Lev Walkin | 0fab1a6 | 2005-03-09 22:19:25 +0000 | [diff] [blame] | 301 | return XPBD_SYSTEM_FAILURE; /* assert?.. */ |
Lev Walkin | 9230225 | 2004-10-23 10:16:51 +0000 | [diff] [blame] | 302 | } |
| 303 | |
| 304 | /* |
| 305 | * Convert arcs into BER representation. |
| 306 | */ |
| 307 | ret = OBJECT_IDENTIFIER_set_arcs(st, arcs, sizeof(*arcs), arcs_count); |
Lev Walkin | 9230225 | 2004-10-23 10:16:51 +0000 | [diff] [blame] | 308 | if(arcs != s_arcs) FREEMEM(arcs); |
| 309 | |
Lev Walkin | 2c34aad | 2005-03-10 11:50:24 +0000 | [diff] [blame] | 310 | return ret ? XPBD_SYSTEM_FAILURE : XPBD_BODY_CONSUMED; |
Lev Walkin | 9230225 | 2004-10-23 10:16:51 +0000 | [diff] [blame] | 311 | } |
| 312 | |
| 313 | asn_dec_rval_t |
| 314 | OBJECT_IDENTIFIER_decode_xer(asn_codec_ctx_t *opt_codec_ctx, |
| 315 | asn_TYPE_descriptor_t *td, void **sptr, const char *opt_mname, |
Lev Walkin | 8c3b854 | 2005-03-10 18:52:02 +0000 | [diff] [blame] | 316 | const void *buf_ptr, size_t size) { |
Lev Walkin | 9230225 | 2004-10-23 10:16:51 +0000 | [diff] [blame] | 317 | |
| 318 | return xer_decode_primitive(opt_codec_ctx, td, |
| 319 | sptr, sizeof(OBJECT_IDENTIFIER_t), opt_mname, |
| 320 | buf_ptr, size, OBJECT_IDENTIFIER__xer_body_decode); |
| 321 | } |
| 322 | |
Lev Walkin | a9cc46e | 2004-09-22 16:06:28 +0000 | [diff] [blame] | 323 | asn_enc_rval_t |
Lev Walkin | 5e03376 | 2004-09-29 13:26:15 +0000 | [diff] [blame] | 324 | OBJECT_IDENTIFIER_encode_xer(asn_TYPE_descriptor_t *td, void *sptr, |
Lev Walkin | a9cc46e | 2004-09-22 16:06:28 +0000 | [diff] [blame] | 325 | int ilevel, enum xer_encoder_flags_e flags, |
| 326 | asn_app_consume_bytes_f *cb, void *app_key) { |
| 327 | const OBJECT_IDENTIFIER_t *st = (const OBJECT_IDENTIFIER_t *)sptr; |
| 328 | asn_enc_rval_t er; |
| 329 | |
| 330 | (void)ilevel; |
| 331 | (void)flags; |
| 332 | |
| 333 | if(!st || !st->buf) |
| 334 | _ASN_ENCODE_FAILED; |
| 335 | |
| 336 | er.encoded = OBJECT_IDENTIFIER__dump_body(st, cb, app_key); |
| 337 | if(er.encoded < 0) _ASN_ENCODE_FAILED; |
| 338 | |
Lev Walkin | 59b176e | 2005-11-26 11:25:14 +0000 | [diff] [blame] | 339 | _ASN_ENCODED_OK(er); |
Lev Walkin | a9cc46e | 2004-09-22 16:06:28 +0000 | [diff] [blame] | 340 | } |
| 341 | |
| 342 | int |
Lev Walkin | 5e03376 | 2004-09-29 13:26:15 +0000 | [diff] [blame] | 343 | OBJECT_IDENTIFIER_print(asn_TYPE_descriptor_t *td, const void *sptr, |
Lev Walkin | a9cc46e | 2004-09-22 16:06:28 +0000 | [diff] [blame] | 344 | int ilevel, asn_app_consume_bytes_f *cb, void *app_key) { |
| 345 | const OBJECT_IDENTIFIER_t *st = (const OBJECT_IDENTIFIER_t *)sptr; |
| 346 | |
| 347 | (void)td; /* Unused argument */ |
| 348 | (void)ilevel; /* Unused argument */ |
| 349 | |
| 350 | if(!st || !st->buf) |
Lev Walkin | 8e8078a | 2004-09-26 13:10:40 +0000 | [diff] [blame] | 351 | return (cb("<absent>", 8, app_key) < 0) ? -1 : 0; |
Lev Walkin | a9cc46e | 2004-09-22 16:06:28 +0000 | [diff] [blame] | 352 | |
| 353 | /* Dump preamble */ |
Lev Walkin | 8e8078a | 2004-09-26 13:10:40 +0000 | [diff] [blame] | 354 | if(cb("{ ", 2, app_key) < 0) |
Lev Walkin | a9cc46e | 2004-09-22 16:06:28 +0000 | [diff] [blame] | 355 | return -1; |
| 356 | |
| 357 | if(OBJECT_IDENTIFIER__dump_body(st, cb, app_key) < 0) |
| 358 | return -1; |
| 359 | |
Lev Walkin | 8e8078a | 2004-09-26 13:10:40 +0000 | [diff] [blame] | 360 | return (cb(" }", 2, app_key) < 0) ? -1 : 0; |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 361 | } |
| 362 | |
| 363 | int |
Lev Walkin | 29a044b | 2004-06-14 07:24:36 +0000 | [diff] [blame] | 364 | OBJECT_IDENTIFIER_get_arcs(OBJECT_IDENTIFIER_t *oid, void *arcs, |
| 365 | unsigned int arc_type_size, unsigned int arc_slots) { |
Lev Walkin | 4d9528c | 2004-08-11 08:10:13 +0000 | [diff] [blame] | 366 | void *arcs_end = (char *)arcs + (arc_type_size * arc_slots); |
Lev Walkin | 29a044b | 2004-06-14 07:24:36 +0000 | [diff] [blame] | 367 | int num_arcs = 0; |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 368 | int startn = 0; |
| 369 | int add = 0; |
| 370 | int i; |
| 371 | |
Lev Walkin | 0787ff0 | 2004-06-17 23:43:39 +0000 | [diff] [blame] | 372 | if(!oid || !oid->buf || (arc_slots && arc_type_size <= 1)) { |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 373 | errno = EINVAL; |
| 374 | return -1; |
| 375 | } |
| 376 | |
| 377 | for(i = 0; i < oid->size; i++) { |
| 378 | uint8_t b = oid->buf[i]; |
| 379 | if((b & 0x80)) /* Continuation expected */ |
| 380 | continue; |
| 381 | |
Lev Walkin | 29a044b | 2004-06-14 07:24:36 +0000 | [diff] [blame] | 382 | if(num_arcs == 0) { |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 383 | /* |
| 384 | * First two arcs are encoded through the backdoor. |
| 385 | */ |
Lev Walkin | 29a044b | 2004-06-14 07:24:36 +0000 | [diff] [blame] | 386 | unsigned LE = 1; /* Little endian */ |
| 387 | int first_arc; |
| 388 | num_arcs++; |
| 389 | if(!arc_slots) { num_arcs++; continue; } |
| 390 | |
| 391 | if(i) first_arc = 2; |
| 392 | else if(b <= 39) first_arc = 0; |
| 393 | else if(b < 79) first_arc = 1; |
| 394 | else first_arc = 2; |
| 395 | |
| 396 | add = -40 * first_arc; |
| 397 | memset(arcs, 0, arc_type_size); |
Lev Walkin | 4d9528c | 2004-08-11 08:10:13 +0000 | [diff] [blame] | 398 | *(unsigned char *)((char *)arcs |
Lev Walkin | 29a044b | 2004-06-14 07:24:36 +0000 | [diff] [blame] | 399 | + ((*(char *)&LE)?0:(arc_type_size - 1))) |
| 400 | = first_arc; |
Lev Walkin | 4ce78ca | 2004-08-25 01:34:11 +0000 | [diff] [blame] | 401 | arcs = ((char *)arcs) + arc_type_size; |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 402 | } |
| 403 | |
Lev Walkin | 29a044b | 2004-06-14 07:24:36 +0000 | [diff] [blame] | 404 | /* Decode, if has space */ |
| 405 | if(arcs < arcs_end) { |
| 406 | if(OBJECT_IDENTIFIER_get_single_arc(&oid->buf[startn], |
| 407 | i - startn + 1, add, |
| 408 | arcs, arc_type_size)) |
| 409 | return -1; |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 410 | startn = i + 1; |
Lev Walkin | 4ce78ca | 2004-08-25 01:34:11 +0000 | [diff] [blame] | 411 | arcs = ((char *)arcs) + arc_type_size; |
Lev Walkin | 29a044b | 2004-06-14 07:24:36 +0000 | [diff] [blame] | 412 | add = 0; |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 413 | } |
Lev Walkin | 29a044b | 2004-06-14 07:24:36 +0000 | [diff] [blame] | 414 | num_arcs++; |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 415 | } |
| 416 | |
Lev Walkin | 29a044b | 2004-06-14 07:24:36 +0000 | [diff] [blame] | 417 | return num_arcs; |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 418 | } |
| 419 | |
Lev Walkin | 0787ff0 | 2004-06-17 23:43:39 +0000 | [diff] [blame] | 420 | |
| 421 | /* |
| 422 | * Save the single value as an object identifier arc. |
| 423 | */ |
Lev Walkin | 91f5cd0 | 2004-08-11 09:10:59 +0000 | [diff] [blame] | 424 | int |
Lev Walkin | b1a1555 | 2005-12-22 21:39:44 +0000 | [diff] [blame] | 425 | OBJECT_IDENTIFIER_set_single_arc(uint8_t *arcbuf, const void *arcval, unsigned int arcval_size, int prepared_order) { |
Lev Walkin | 0787ff0 | 2004-06-17 23:43:39 +0000 | [diff] [blame] | 426 | /* |
| 427 | * The following conditions must hold: |
| 428 | * assert(arcval); |
| 429 | * assert(arcval_size > 0); |
Lev Walkin | 523de9e | 2006-08-18 01:34:18 +0000 | [diff] [blame] | 430 | * assert(arcval_size <= 16); |
Lev Walkin | 0787ff0 | 2004-06-17 23:43:39 +0000 | [diff] [blame] | 431 | * assert(arcbuf); |
| 432 | */ |
| 433 | #ifdef WORDS_BIGENDIAN |
| 434 | const unsigned isLittleEndian = 0; |
| 435 | #else |
| 436 | unsigned LE = 1; |
| 437 | unsigned isLittleEndian = *(char *)&LE; |
| 438 | #endif |
Lev Walkin | b1a1555 | 2005-12-22 21:39:44 +0000 | [diff] [blame] | 439 | const uint8_t *tend, *tp; |
Lev Walkin | 0787ff0 | 2004-06-17 23:43:39 +0000 | [diff] [blame] | 440 | unsigned int cache; |
| 441 | uint8_t *bp = arcbuf; |
| 442 | int bits; |
Lev Walkin | 523de9e | 2006-08-18 01:34:18 +0000 | [diff] [blame] | 443 | uint8_t buffer[16]; |
Lev Walkin | 0787ff0 | 2004-06-17 23:43:39 +0000 | [diff] [blame] | 444 | |
| 445 | if(isLittleEndian && !prepared_order) { |
Lev Walkin | b1a1555 | 2005-12-22 21:39:44 +0000 | [diff] [blame] | 446 | const uint8_t *a = (const unsigned char *)arcval + arcval_size - 1; |
| 447 | const uint8_t *aend = (const uint8_t *)arcval; |
Lev Walkin | 0787ff0 | 2004-06-17 23:43:39 +0000 | [diff] [blame] | 448 | uint8_t *msb = buffer + arcval_size - 1; |
Lev Walkin | b1a1555 | 2005-12-22 21:39:44 +0000 | [diff] [blame] | 449 | uint8_t *tb; |
| 450 | for(tb = buffer; a >= aend; tb++, a--) |
| 451 | if((*tb = *a) && (tb < msb)) |
| 452 | msb = tb; |
Lev Walkin | 0787ff0 | 2004-06-17 23:43:39 +0000 | [diff] [blame] | 453 | tend = &buffer[arcval_size]; |
| 454 | tp = msb; /* Most significant non-zero byte */ |
| 455 | } else { |
| 456 | /* Look for most significant non-zero byte */ |
Lev Walkin | b1a1555 | 2005-12-22 21:39:44 +0000 | [diff] [blame] | 457 | tend = (const unsigned char *)arcval + arcval_size; |
| 458 | for(tp = (const uint8_t *)arcval; tp < tend - 1; tp++) |
Lev Walkin | 0787ff0 | 2004-06-17 23:43:39 +0000 | [diff] [blame] | 459 | if(*tp) break; |
| 460 | } |
| 461 | |
| 462 | /* |
| 463 | * Split the value in 7-bits chunks. |
| 464 | */ |
| 465 | bits = ((tend - tp) * CHAR_BIT) % 7; |
| 466 | if(bits) { |
| 467 | cache = *tp >> (CHAR_BIT - bits); |
| 468 | if(cache) { |
| 469 | *bp++ = cache | 0x80; |
| 470 | cache = *tp++; |
| 471 | bits = CHAR_BIT - bits; |
| 472 | } else { |
| 473 | bits = -bits; |
| 474 | } |
| 475 | } else { |
| 476 | cache = 0; |
| 477 | } |
| 478 | for(; tp < tend; tp++) { |
| 479 | cache = (cache << CHAR_BIT) + *tp; |
| 480 | bits += CHAR_BIT; |
| 481 | while(bits >= 7) { |
| 482 | bits -= 7; |
| 483 | *bp++ = 0x80 | (cache >> bits); |
| 484 | } |
| 485 | } |
| 486 | if(bits) *bp++ = cache; |
| 487 | bp[-1] &= 0x7f; /* Clear the last bit */ |
| 488 | |
| 489 | return bp - arcbuf; |
| 490 | } |
| 491 | |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 492 | int |
Lev Walkin | b1a1555 | 2005-12-22 21:39:44 +0000 | [diff] [blame] | 493 | OBJECT_IDENTIFIER_set_arcs(OBJECT_IDENTIFIER_t *oid, const void *arcs, unsigned int arc_type_size, unsigned int arc_slots) { |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 494 | uint8_t *buf; |
| 495 | uint8_t *bp; |
Lev Walkin | 0787ff0 | 2004-06-17 23:43:39 +0000 | [diff] [blame] | 496 | unsigned LE = 1; /* Little endian (x86) */ |
| 497 | unsigned isLittleEndian = *((char *)&LE); |
| 498 | unsigned int arc0; |
| 499 | unsigned int arc1; |
| 500 | unsigned size; |
Lev Walkin | c4c6196 | 2004-06-14 08:17:27 +0000 | [diff] [blame] | 501 | unsigned i; |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 502 | |
Lev Walkin | 523de9e | 2006-08-18 01:34:18 +0000 | [diff] [blame] | 503 | if(!oid || !arcs || arc_type_size < 1 |
| 504 | || arc_type_size > 16 |
| 505 | || arc_slots < 2) { |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 506 | errno = EINVAL; |
| 507 | return -1; |
| 508 | } |
| 509 | |
Lev Walkin | 0787ff0 | 2004-06-17 23:43:39 +0000 | [diff] [blame] | 510 | switch(arc_type_size) { |
| 511 | case sizeof(char): |
Lev Walkin | b1a1555 | 2005-12-22 21:39:44 +0000 | [diff] [blame] | 512 | arc0 = ((const unsigned char *)arcs)[0]; |
| 513 | arc1 = ((const unsigned char *)arcs)[1]; |
Lev Walkin | 0787ff0 | 2004-06-17 23:43:39 +0000 | [diff] [blame] | 514 | break; |
| 515 | case sizeof(short): |
Lev Walkin | b1a1555 | 2005-12-22 21:39:44 +0000 | [diff] [blame] | 516 | arc0 = ((const unsigned short *)arcs)[0]; |
| 517 | arc1 = ((const unsigned short *)arcs)[1]; |
Lev Walkin | 0787ff0 | 2004-06-17 23:43:39 +0000 | [diff] [blame] | 518 | break; |
| 519 | case sizeof(int): |
Lev Walkin | b1a1555 | 2005-12-22 21:39:44 +0000 | [diff] [blame] | 520 | arc0 = ((const unsigned int *)arcs)[0]; |
| 521 | arc1 = ((const unsigned int *)arcs)[1]; |
Lev Walkin | 0787ff0 | 2004-06-17 23:43:39 +0000 | [diff] [blame] | 522 | break; |
| 523 | default: |
| 524 | arc1 = arc0 = 0; |
| 525 | if(isLittleEndian) { /* Little endian (x86) */ |
Lev Walkin | b1a1555 | 2005-12-22 21:39:44 +0000 | [diff] [blame] | 526 | const unsigned char *ps, *pe; |
Lev Walkin | 0787ff0 | 2004-06-17 23:43:39 +0000 | [diff] [blame] | 527 | /* If more significant bytes are present, |
| 528 | * make them > 255 quick */ |
Lev Walkin | b1a1555 | 2005-12-22 21:39:44 +0000 | [diff] [blame] | 529 | for(ps = (const unsigned char *)arcs + 1, pe = ps+arc_type_size; |
Lev Walkin | 4d9528c | 2004-08-11 08:10:13 +0000 | [diff] [blame] | 530 | ps < pe; ps++) |
Lev Walkin | 0787ff0 | 2004-06-17 23:43:39 +0000 | [diff] [blame] | 531 | arc0 |= *ps, arc1 |= *(ps + arc_type_size); |
| 532 | arc0 <<= CHAR_BIT, arc1 <<= CHAR_BIT; |
Lev Walkin | b1a1555 | 2005-12-22 21:39:44 +0000 | [diff] [blame] | 533 | arc0 = *((const unsigned char *)arcs + 0); |
| 534 | arc1 = *((const unsigned char *)arcs + arc_type_size); |
Lev Walkin | 0787ff0 | 2004-06-17 23:43:39 +0000 | [diff] [blame] | 535 | } else { |
Lev Walkin | b1a1555 | 2005-12-22 21:39:44 +0000 | [diff] [blame] | 536 | const unsigned char *ps, *pe; |
Lev Walkin | 0787ff0 | 2004-06-17 23:43:39 +0000 | [diff] [blame] | 537 | /* If more significant bytes are present, |
| 538 | * make them > 255 quick */ |
Lev Walkin | b1a1555 | 2005-12-22 21:39:44 +0000 | [diff] [blame] | 539 | for(ps = (const unsigned char *)arcs, pe = ps+arc_type_size - 1; ps < pe; ps++) |
Lev Walkin | 0787ff0 | 2004-06-17 23:43:39 +0000 | [diff] [blame] | 540 | arc0 |= *ps, arc1 |= *(ps + arc_type_size); |
Lev Walkin | b1a1555 | 2005-12-22 21:39:44 +0000 | [diff] [blame] | 541 | arc0 = *((const unsigned char *)arcs + arc_type_size - 1); |
| 542 | arc1 = *((const unsigned char *)arcs +(arc_type_size<< 1)-1); |
Lev Walkin | 0787ff0 | 2004-06-17 23:43:39 +0000 | [diff] [blame] | 543 | } |
| 544 | } |
| 545 | |
| 546 | /* |
| 547 | * The previous chapter left us with the first and the second arcs. |
| 548 | * The values are not precise (that is, they are valid only if |
| 549 | * they're less than 255), but OK for the purposes of making |
| 550 | * the sanity test below. |
| 551 | */ |
| 552 | if(arc0 <= 1) { |
| 553 | if(arc1 >= 39) { |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 554 | /* 8.19.4: At most 39 subsequent values (including 0) */ |
| 555 | errno = ERANGE; |
| 556 | return -1; |
| 557 | } |
Lev Walkin | 0787ff0 | 2004-06-17 23:43:39 +0000 | [diff] [blame] | 558 | } else if(arc0 > 2) { |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 559 | /* 8.19.4: Only three values are allocated from the root node */ |
| 560 | errno = ERANGE; |
| 561 | return -1; |
| 562 | } |
Lev Walkin | 0787ff0 | 2004-06-17 23:43:39 +0000 | [diff] [blame] | 563 | /* |
| 564 | * After above tests it is known that the value of arc0 is completely |
| 565 | * trustworthy (0..2). However, the arc1's value is still meaningless. |
| 566 | */ |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 567 | |
| 568 | /* |
| 569 | * Roughly estimate the maximum size necessary to encode these arcs. |
Lev Walkin | 0787ff0 | 2004-06-17 23:43:39 +0000 | [diff] [blame] | 570 | * This estimation implicitly takes in account the following facts, |
| 571 | * that cancel each other: |
| 572 | * * the first two arcs are encoded in a single value. |
| 573 | * * the first value may require more space (+1 byte) |
| 574 | * * the value of the first arc which is in range (0..2) |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 575 | */ |
Lev Walkin | 0787ff0 | 2004-06-17 23:43:39 +0000 | [diff] [blame] | 576 | size = ((arc_type_size * CHAR_BIT + 6) / 7) * arc_slots; |
Lev Walkin | c234657 | 2004-08-11 09:07:36 +0000 | [diff] [blame] | 577 | bp = buf = (uint8_t *)MALLOC(size + 1); |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 578 | if(!buf) { |
| 579 | /* ENOMEM */ |
| 580 | return -1; |
| 581 | } |
| 582 | |
| 583 | /* |
Lev Walkin | 0787ff0 | 2004-06-17 23:43:39 +0000 | [diff] [blame] | 584 | * Encode the first two arcs. |
| 585 | * These require special treatment. |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 586 | */ |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 587 | { |
Lev Walkin | 0787ff0 | 2004-06-17 23:43:39 +0000 | [diff] [blame] | 588 | uint8_t *tp; |
Lev Walkin | 523de9e | 2006-08-18 01:34:18 +0000 | [diff] [blame] | 589 | uint8_t first_value[1 + 16]; /* of two arcs */ |
Lev Walkin | 4d9528c | 2004-08-11 08:10:13 +0000 | [diff] [blame] | 590 | uint8_t *fv = first_value; |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 591 | |
Lev Walkin | 0787ff0 | 2004-06-17 23:43:39 +0000 | [diff] [blame] | 592 | /* |
| 593 | * Simulate first_value = arc0 * 40 + arc1; |
| 594 | */ |
| 595 | /* Copy the second (1'st) arcs[1] into the first_value */ |
| 596 | *fv++ = 0; |
Lev Walkin | b1a1555 | 2005-12-22 21:39:44 +0000 | [diff] [blame] | 597 | arcs = ((const char *)arcs) + arc_type_size; |
Lev Walkin | 0787ff0 | 2004-06-17 23:43:39 +0000 | [diff] [blame] | 598 | if(isLittleEndian) { |
Lev Walkin | b1a1555 | 2005-12-22 21:39:44 +0000 | [diff] [blame] | 599 | const uint8_t *aend = (const unsigned char *)arcs - 1; |
| 600 | const uint8_t *a1 = (const unsigned char *)arcs + arc_type_size - 1; |
Lev Walkin | 0787ff0 | 2004-06-17 23:43:39 +0000 | [diff] [blame] | 601 | for(; a1 > aend; fv++, a1--) *fv = *a1; |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 602 | } else { |
Lev Walkin | b1a1555 | 2005-12-22 21:39:44 +0000 | [diff] [blame] | 603 | const uint8_t *a1 = (const uint8_t *)arcs; |
| 604 | const uint8_t *aend = a1 + arc_type_size; |
Lev Walkin | 0787ff0 | 2004-06-17 23:43:39 +0000 | [diff] [blame] | 605 | for(; a1 < aend; fv++, a1++) *fv = *a1; |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 606 | } |
Lev Walkin | 0787ff0 | 2004-06-17 23:43:39 +0000 | [diff] [blame] | 607 | /* Increase the first_value by arc0 */ |
| 608 | arc0 *= 40; /* (0..80) */ |
| 609 | for(tp = first_value + arc_type_size; tp >= first_value; tp--) { |
| 610 | unsigned int v = *tp; |
| 611 | v += arc0; |
| 612 | *tp = v; |
| 613 | if(v >= (1 << CHAR_BIT)) arc0 = v >> CHAR_BIT; |
| 614 | else break; |
| 615 | } |
| 616 | |
| 617 | assert(tp >= first_value); |
| 618 | |
| 619 | bp += OBJECT_IDENTIFIER_set_single_arc(bp, first_value, |
| 620 | fv - first_value, 1); |
| 621 | } |
| 622 | |
| 623 | /* |
| 624 | * Save the rest of arcs. |
| 625 | */ |
Lev Walkin | b1a1555 | 2005-12-22 21:39:44 +0000 | [diff] [blame] | 626 | for(arcs = ((const char *)arcs) + arc_type_size, i = 2; |
Lev Walkin | 4ce78ca | 2004-08-25 01:34:11 +0000 | [diff] [blame] | 627 | i < arc_slots; |
Lev Walkin | b1a1555 | 2005-12-22 21:39:44 +0000 | [diff] [blame] | 628 | i++, arcs = ((const char *)arcs) + arc_type_size) { |
Lev Walkin | 0787ff0 | 2004-06-17 23:43:39 +0000 | [diff] [blame] | 629 | bp += OBJECT_IDENTIFIER_set_single_arc(bp, |
| 630 | arcs, arc_type_size, 0); |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 631 | } |
| 632 | |
Lev Walkin | 34b2a93 | 2004-06-17 23:46:45 +0000 | [diff] [blame] | 633 | assert((unsigned)(bp - buf) <= size); |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 634 | |
| 635 | /* |
| 636 | * Replace buffer. |
| 637 | */ |
Lev Walkin | 0787ff0 | 2004-06-17 23:43:39 +0000 | [diff] [blame] | 638 | oid->size = bp - buf; |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 639 | bp = oid->buf; |
| 640 | oid->buf = buf; |
| 641 | if(bp) FREEMEM(bp); |
| 642 | |
| 643 | return 0; |
| 644 | } |
Lev Walkin | c4c6196 | 2004-06-14 08:17:27 +0000 | [diff] [blame] | 645 | |
Lev Walkin | 9230225 | 2004-10-23 10:16:51 +0000 | [diff] [blame] | 646 | |
| 647 | int |
| 648 | OBJECT_IDENTIFIER_parse_arcs(const char *oid_text, ssize_t oid_txt_length, |
Lev Walkin | 093ba2e | 2005-04-04 21:10:06 +0000 | [diff] [blame] | 649 | long *arcs, unsigned int arcs_slots, const char **opt_oid_text_end) { |
Lev Walkin | 9230225 | 2004-10-23 10:16:51 +0000 | [diff] [blame] | 650 | unsigned int arcs_count = 0; |
| 651 | const char *oid_end; |
| 652 | long value = 0; |
| 653 | enum { |
| 654 | ST_SKIPSPACE, |
| 655 | ST_WAITDIGITS, /* Next character is expected to be a digit */ |
Lev Walkin | fdb2592 | 2005-07-21 09:32:49 +0000 | [diff] [blame] | 656 | ST_DIGITS |
Lev Walkin | 9230225 | 2004-10-23 10:16:51 +0000 | [diff] [blame] | 657 | } state = ST_SKIPSPACE; |
| 658 | |
| 659 | if(!oid_text || oid_txt_length < -1 || (arcs_slots && !arcs)) { |
Lev Walkin | 093ba2e | 2005-04-04 21:10:06 +0000 | [diff] [blame] | 660 | if(opt_oid_text_end) *opt_oid_text_end = oid_text; |
Lev Walkin | 9230225 | 2004-10-23 10:16:51 +0000 | [diff] [blame] | 661 | errno = EINVAL; |
| 662 | return -1; |
| 663 | } |
| 664 | |
| 665 | if(oid_txt_length == -1) |
| 666 | oid_txt_length = strlen(oid_text); |
| 667 | |
| 668 | for(oid_end = oid_text + oid_txt_length; oid_text<oid_end; oid_text++) { |
| 669 | switch(*oid_text) { |
| 670 | case 0x09: case 0x0a: case 0x0d: case 0x20: /* whitespace */ |
| 671 | if(state == ST_SKIPSPACE) { |
| 672 | continue; |
| 673 | } else { |
| 674 | break; /* Finish */ |
| 675 | } |
| 676 | case 0x2e: /* '.' */ |
| 677 | if(state != ST_DIGITS |
| 678 | || (oid_text + 1) == oid_end) { |
| 679 | state = ST_WAITDIGITS; |
| 680 | break; |
| 681 | } |
| 682 | if(arcs_count < arcs_slots) |
| 683 | arcs[arcs_count] = value; |
| 684 | arcs_count++; |
| 685 | state = ST_WAITDIGITS; |
| 686 | continue; |
| 687 | case 0x30: case 0x31: case 0x32: case 0x33: case 0x34: |
| 688 | case 0x35: case 0x36: case 0x37: case 0x38: case 0x39: |
| 689 | if(state != ST_DIGITS) { |
| 690 | state = ST_DIGITS; |
| 691 | value = 0; |
| 692 | } |
| 693 | if(1) { |
| 694 | long new_value = value * 10; |
| 695 | if(new_value / 10 != value |
| 696 | || (value = new_value + (*oid_text - 0x30)) < 0) { |
| 697 | /* Overflow */ |
| 698 | state = ST_WAITDIGITS; |
| 699 | break; |
| 700 | } |
| 701 | continue; |
| 702 | } |
| 703 | default: |
| 704 | /* Unexpected symbols */ |
| 705 | state = ST_WAITDIGITS; |
| 706 | break; |
| 707 | } /* switch() */ |
| 708 | break; |
| 709 | } /* for() */ |
| 710 | |
| 711 | |
Lev Walkin | 093ba2e | 2005-04-04 21:10:06 +0000 | [diff] [blame] | 712 | if(opt_oid_text_end) *opt_oid_text_end = oid_text; |
Lev Walkin | 9230225 | 2004-10-23 10:16:51 +0000 | [diff] [blame] | 713 | |
| 714 | /* Finalize last arc */ |
| 715 | switch(state) { |
| 716 | case ST_WAITDIGITS: |
| 717 | errno = EINVAL; |
| 718 | return -1; |
| 719 | case ST_DIGITS: |
| 720 | if(arcs_count < arcs_slots) |
| 721 | arcs[arcs_count] = value; |
| 722 | arcs_count++; |
| 723 | /* Fall through */ |
| 724 | default: |
| 725 | return arcs_count; |
| 726 | } |
| 727 | } |
| 728 | |
| 729 | |