2 * Copyright (c) 2003, 2004 Lev Walkin <vlm@lionet.info>. All rights reserved.
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3 * Redistribution and modifications are permitted subject to BSD license.
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5 #include <asn_internal.h>
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7 #include <OBJECT_IDENTIFIER.h>
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8 #include <OCTET_STRING.h>
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9 #include <limits.h> /* for CHAR_BIT */
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13 * OBJECT IDENTIFIER basic type description.
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15 static const ber_tlv_tag_t asn_DEF_OBJECT_IDENTIFIER_tags[] = {
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16 (ASN_TAG_CLASS_UNIVERSAL | (6 << 2))
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18 asn_TYPE_operation_t asn_OP_OBJECT_IDENTIFIER = {
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19 ASN__PRIMITIVE_TYPE_free,
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20 OBJECT_IDENTIFIER_print,
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21 OCTET_STRING_compare, /* Implemented in terms of a string comparison */
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22 ber_decode_primitive,
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23 der_encode_primitive,
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24 OBJECT_IDENTIFIER_decode_xer,
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25 OBJECT_IDENTIFIER_encode_xer,
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26 #ifdef ASN_DISABLE_OER_SUPPORT
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30 OBJECT_IDENTIFIER_decode_oer,
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31 OBJECT_IDENTIFIER_encode_oer,
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32 #endif /* ASN_DISABLE_OER_SUPPORT */
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33 #ifdef ASN_DISABLE_PER_SUPPORT
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39 OCTET_STRING_decode_uper,
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40 OCTET_STRING_encode_uper,
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41 OCTET_STRING_decode_aper,
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42 OCTET_STRING_encode_aper,
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43 #endif /* ASN_DISABLE_PER_SUPPORT */
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44 OBJECT_IDENTIFIER_random_fill,
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45 0 /* Use generic outmost tag fetcher */
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47 asn_TYPE_descriptor_t asn_DEF_OBJECT_IDENTIFIER = {
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48 "OBJECT IDENTIFIER",
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49 "OBJECT_IDENTIFIER",
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50 &asn_OP_OBJECT_IDENTIFIER,
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51 asn_DEF_OBJECT_IDENTIFIER_tags,
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52 sizeof(asn_DEF_OBJECT_IDENTIFIER_tags)
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53 / sizeof(asn_DEF_OBJECT_IDENTIFIER_tags[0]),
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54 asn_DEF_OBJECT_IDENTIFIER_tags, /* Same as above */
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55 sizeof(asn_DEF_OBJECT_IDENTIFIER_tags)
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56 / sizeof(asn_DEF_OBJECT_IDENTIFIER_tags[0]),
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57 { 0, 0, OBJECT_IDENTIFIER_constraint },
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58 0, 0, /* No members */
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59 0 /* No specifics */
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63 OBJECT_IDENTIFIER_constraint(const asn_TYPE_descriptor_t *td, const void *sptr,
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64 asn_app_constraint_failed_f *ctfailcb,
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66 const OBJECT_IDENTIFIER_t *st = (const OBJECT_IDENTIFIER_t *)sptr;
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70 ASN__CTFAIL(app_key, td, sptr,
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71 "%s: at least one numerical value "
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73 td->name, __FILE__, __LINE__);
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77 ASN__CTFAIL(app_key, td, sptr,
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78 "%s: value not given (%s:%d)",
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79 td->name, __FILE__, __LINE__);
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87 OBJECT_IDENTIFIER_get_first_arcs(const uint8_t *arcbuf, size_t arcbuf_len,
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88 asn_oid_arc_t *arc0, asn_oid_arc_t *arc1) {
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89 asn_oid_arc_t value;
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91 ssize_t rd = OBJECT_IDENTIFIER_get_single_arc(arcbuf, arcbuf_len, &value);
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92 if(rd <= 0) return rd;
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97 } else if(value >= 40) {
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109 OBJECT_IDENTIFIER_get_single_arc(const uint8_t *arcbuf, size_t arcbuf_len,
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110 asn_oid_arc_t *ret_value) {
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111 const uint8_t *b = arcbuf;
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112 const uint8_t *arcend = arcbuf + arcbuf_len; /* End of arc */
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114 if(arcbuf == arcend) {
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117 asn_oid_arc_t accum;
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118 asn_oid_arc_t upper_limit = (ASN_OID_ARC_MAX >> 7);
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119 /* When the value reaches "upper_limit", it can take */
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120 /* at most one more digit. If it exceeds "upper_limit" */
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121 /* but there are more digits - it's an Overflow condition */
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122 /* Gather all bits into the accumulator */
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123 for(accum = 0; b < arcend; b++) {
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124 accum = (accum << 7) | (*b & ~0x80);
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125 if((*b & 0x80) == 0) { // no more digits
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126 if(accum <= ASN_OID_ARC_MAX) {
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127 *ret_value = accum;
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128 return 1 + (b - arcbuf);
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130 errno = ERANGE; /* Overflow */
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133 } else { // to make sure we aren't wrapping around
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134 if(accum > upper_limit) {
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135 errno = ERANGE; /* Overflow */
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147 OBJECT_IDENTIFIER__dump_body(const OBJECT_IDENTIFIER_t *st,
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148 asn_app_consume_bytes_f *cb, void *app_key) {
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150 asn_oid_arc_t arc0, arc1;
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151 size_t produced = 0;
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156 rd = OBJECT_IDENTIFIER_get_first_arcs(st->buf, st->size, &arc0, &arc1);
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161 ret = snprintf(scratch, sizeof(scratch), "%"PRIu32".%"PRIu32, arc0, arc1);
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162 if(ret >= (ssize_t)sizeof(scratch)) {
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166 if(cb(scratch, ret, app_key) < 0)
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169 for(off = rd; ; ) {
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171 rd = OBJECT_IDENTIFIER_get_single_arc(st->buf + off, st->size - off,
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175 } else if(rd == 0) {
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176 /* No more arcs. */
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180 assert(off <= st->size);
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181 ret = snprintf(scratch, sizeof(scratch), ".%" PRIu32, arc);
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182 if(ret >= (ssize_t)sizeof(scratch)) {
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186 if(cb(scratch, ret, app_key) < 0) return -1;
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190 if(off != st->size) {
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191 ASN_DEBUG("Could not scan to the end of Object Identifier");
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198 static enum xer_pbd_rval
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199 OBJECT_IDENTIFIER__xer_body_decode(const asn_TYPE_descriptor_t *td, void *sptr,
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200 const void *chunk_buf, size_t chunk_size) {
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201 OBJECT_IDENTIFIER_t *st = (OBJECT_IDENTIFIER_t *)sptr;
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202 const char *chunk_end = (const char *)chunk_buf + chunk_size;
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203 const char *endptr;
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204 asn_oid_arc_t s_arcs[10];
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205 asn_oid_arc_t *arcs = s_arcs;
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211 num_arcs = OBJECT_IDENTIFIER_parse_arcs(
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212 (const char *)chunk_buf, chunk_size, arcs,
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213 sizeof(s_arcs) / sizeof(s_arcs[0]), &endptr);
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215 /* Expecting more than zero arcs */
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216 return XPBD_BROKEN_ENCODING;
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217 } else if(num_arcs == 0) {
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218 return XPBD_NOT_BODY_IGNORE;
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220 assert(endptr == chunk_end);
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222 if((size_t)num_arcs > sizeof(s_arcs)/sizeof(s_arcs[0])) {
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223 arcs = (asn_oid_arc_t *)MALLOC(num_arcs * sizeof(asn_oid_arc_t));
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224 if(!arcs) return XPBD_SYSTEM_FAILURE;
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225 ret = OBJECT_IDENTIFIER_parse_arcs((const char *)chunk_buf, chunk_size,
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226 arcs, num_arcs, &endptr);
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227 if(ret != num_arcs)
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228 return XPBD_SYSTEM_FAILURE; /* assert?.. */
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232 * Convert arcs into BER representation.
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234 ret = OBJECT_IDENTIFIER_set_arcs(st, arcs, num_arcs);
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235 if(arcs != s_arcs) FREEMEM(arcs);
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237 return ret ? XPBD_SYSTEM_FAILURE : XPBD_BODY_CONSUMED;
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241 OBJECT_IDENTIFIER_decode_xer(const asn_codec_ctx_t *opt_codec_ctx,
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242 const asn_TYPE_descriptor_t *td, void **sptr,
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243 const char *opt_mname, const void *buf_ptr,
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245 return xer_decode_primitive(opt_codec_ctx, td,
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246 sptr, sizeof(OBJECT_IDENTIFIER_t), opt_mname,
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247 buf_ptr, size, OBJECT_IDENTIFIER__xer_body_decode);
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251 OBJECT_IDENTIFIER_encode_xer(const asn_TYPE_descriptor_t *td, const void *sptr,
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252 int ilevel, enum xer_encoder_flags_e flags,
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253 asn_app_consume_bytes_f *cb, void *app_key) {
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254 const OBJECT_IDENTIFIER_t *st = (const OBJECT_IDENTIFIER_t *)sptr;
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255 asn_enc_rval_t er = {0,0,0};
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260 if(!st || !st->buf) {
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261 ASN__ENCODE_FAILED;
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264 er.encoded = OBJECT_IDENTIFIER__dump_body(st, cb, app_key);
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265 if(er.encoded < 0) ASN__ENCODE_FAILED;
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267 ASN__ENCODED_OK(er);
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271 OBJECT_IDENTIFIER_print(const asn_TYPE_descriptor_t *td, const void *sptr,
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272 int ilevel, asn_app_consume_bytes_f *cb,
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274 const OBJECT_IDENTIFIER_t *st = (const OBJECT_IDENTIFIER_t *)sptr;
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276 (void)td; /* Unused argument */
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277 (void)ilevel; /* Unused argument */
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279 if(!st || !st->buf)
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280 return (cb("<absent>", 8, app_key) < 0) ? -1 : 0;
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282 /* Dump preamble */
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283 if(cb("{ ", 2, app_key) < 0)
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286 if(OBJECT_IDENTIFIER__dump_body(st, cb, app_key) < 0) {
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290 return (cb(" }", 2, app_key) < 0) ? -1 : 0;
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294 OBJECT_IDENTIFIER_get_arcs(const OBJECT_IDENTIFIER_t *st, asn_oid_arc_t *arcs,
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295 size_t arc_slots) {
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296 asn_oid_arc_t arc0, arc1;
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297 size_t num_arcs = 0;
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301 if(!st || !st->buf) {
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306 rd = OBJECT_IDENTIFIER_get_first_arcs(st->buf, st->size, &arc0, &arc1);
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311 switch(arc_slots) {
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323 for(off = rd; ; ) {
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325 rd = OBJECT_IDENTIFIER_get_single_arc(st->buf + off, st->size - off,
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329 } else if(rd == 0) {
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330 /* No more arcs. */
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334 if(num_arcs < arc_slots) {
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335 arcs[num_arcs] = arc;
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341 if(off != st->size) {
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350 * Save the single value as an object identifier arc.
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353 OBJECT_IDENTIFIER_set_single_arc(uint8_t *arcbuf, size_t arcbuf_len,
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354 asn_oid_arc_t value) {
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356 * The following conditions must hold:
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359 uint8_t scratch[((sizeof(value) * CHAR_BIT + 6) / 7)];
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360 uint8_t *scratch_end = &scratch[sizeof(scratch)-1];
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365 for(b = scratch_end, mask = 0; ; mask = 0x80, b--) {
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366 *b = mask | (value & 0x7f);
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373 result_len = (scratch_end - b) + 1;
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375 if(result_len > arcbuf_len) {
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379 memcpy(arcbuf, b, result_len);
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385 OBJECT_IDENTIFIER_set_arcs(OBJECT_IDENTIFIER_t *st, const asn_oid_arc_t *arcs,
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386 size_t arc_slots) {
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390 asn_oid_arc_t arc0;
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391 asn_oid_arc_t arc1;
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395 if(!st || !arcs || arc_slots < 2) {
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405 /* 8.19.4: At most 39 subsequent values (including 0) */
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409 } else if(arc0 == 2) {
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410 if(arc1 > ASN_OID_ARC_MAX - 80) {
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414 } else if(arc0 > 2) {
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415 /* 8.19.4: Only three values are allocated from the root node */
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421 * After above tests it is known that the value of arc0 is completely
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422 * trustworthy (0..2). However, the arc1's value is still meaningless.
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426 * Roughly estimate the maximum size necessary to encode these arcs.
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427 * This estimation implicitly takes in account the following facts,
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428 * that cancel each other:
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429 * * the first two arcs are encoded in a single value.
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430 * * the first value may require more space (+1 byte)
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431 * * the value of the first arc which is in range (0..2)
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433 size = ((sizeof(asn_oid_arc_t) * CHAR_BIT + 6) / 7) * arc_slots;
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434 bp = buf = (uint8_t *)MALLOC(size + 1);
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440 wrote = OBJECT_IDENTIFIER_set_single_arc(bp, size, arc0 * 40 + arc1);
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445 assert((size_t)wrote <= size);
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449 for(i = 2; i < arc_slots; i++) {
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450 wrote = OBJECT_IDENTIFIER_set_single_arc(bp, size, arcs[i]);
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455 assert((size_t)wrote <= size);
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463 st->size = bp - buf;
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466 st->buf[st->size] = '\0';
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467 if(bp) FREEMEM(bp);
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473 OBJECT_IDENTIFIER_parse_arcs(const char *oid_text, ssize_t oid_txt_length,
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474 asn_oid_arc_t *arcs, size_t arcs_count,
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475 const char **opt_oid_text_end) {
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476 size_t num_arcs = 0;
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477 const char *oid_end;
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481 ST_AFTERVALUE, /* Next character ought to be '.' or a space */
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482 ST_WAITDIGITS /* Next character is expected to be a digit */
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483 } state = ST_LEADSPACE;
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485 if(!oid_text || oid_txt_length < -1 || (arcs_count && !arcs)) {
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486 if(opt_oid_text_end) *opt_oid_text_end = oid_text;
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491 if(oid_txt_length == -1)
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492 oid_txt_length = strlen(oid_text);
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494 #define _OID_CAPTURE_ARC(oid_text, oid_end) \
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496 const char *endp = oid_end; \
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497 unsigned long value; \
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498 switch(asn_strtoul_lim(oid_text, &endp, &value)) { \
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499 case ASN_STRTOX_EXTRA_DATA: \
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500 case ASN_STRTOX_OK: \
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501 if(value <= ASN_OID_ARC_MAX) { \
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502 if(num_arcs < arcs_count) arcs[num_arcs] = value; \
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504 oid_text = endp - 1; \
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507 /* Fall through */ \
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508 case ASN_STRTOX_ERROR_RANGE: \
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509 if(opt_oid_text_end) *opt_oid_text_end = oid_text; \
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512 case ASN_STRTOX_ERROR_INVAL: \
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513 case ASN_STRTOX_EXPECT_MORE: \
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514 if(opt_oid_text_end) *opt_oid_text_end = oid_text; \
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520 for(oid_end = oid_text + oid_txt_length; oid_text<oid_end; oid_text++) {
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521 switch(*oid_text) {
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522 case 0x09: case 0x0a: case 0x0d: case 0x20: /* whitespace */
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527 case ST_AFTERVALUE:
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528 state = ST_TAILSPACE;
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530 case ST_WAITDIGITS:
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531 break; /* Digits expected after ".", got whitespace */
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534 case 0x2e: /* '.' */
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538 case ST_WAITDIGITS:
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539 if(opt_oid_text_end)
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540 *opt_oid_text_end = oid_text;
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541 errno = EINVAL; /* Broken OID */
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544 case ST_AFTERVALUE:
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545 state = ST_WAITDIGITS;
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549 case 0x30: case 0x31: case 0x32: case 0x33: case 0x34:
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550 case 0x35: case 0x36: case 0x37: case 0x38: case 0x39:
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553 case ST_AFTERVALUE:
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554 if(opt_oid_text_end)
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555 *opt_oid_text_end = oid_text;
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556 errno = EINVAL; /* "1. 1" => broken OID */
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559 case ST_WAITDIGITS:
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560 _OID_CAPTURE_ARC(oid_text, oid_end);
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561 state = ST_AFTERVALUE;
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566 /* Unexpected symbols */
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567 state = ST_WAITDIGITS;
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574 if(opt_oid_text_end) *opt_oid_text_end = oid_text;
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576 /* Finalize last arc */
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579 return 0; /* No OID found in input data */
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580 case ST_WAITDIGITS:
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581 errno = EINVAL; /* Broken OID */
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583 case ST_AFTERVALUE:
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588 errno = EINVAL; /* Broken OID */
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593 * Generate values from the list of interesting values, or just a random
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594 * value up to the upper limit.
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596 static asn_oid_arc_t
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597 OBJECT_IDENTIFIER__biased_random_arc(asn_oid_arc_t upper_bound) {
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598 const asn_oid_arc_t values[] = {0, 1, 127, 128, 129, 254, 255, 256};
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601 switch(asn_random_between(0, 2)) {
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603 idx = asn_random_between(0, sizeof(values) / sizeof(values[0]) - 1);
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604 if(values[idx] < upper_bound) {
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605 return values[idx];
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609 return asn_random_between(0, upper_bound);
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612 return upper_bound;
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616 asn_random_fill_result_t
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617 OBJECT_IDENTIFIER_random_fill(const asn_TYPE_descriptor_t *td, void **sptr,
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618 const asn_encoding_constraints_t *constraints,
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619 size_t max_length) {
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620 asn_random_fill_result_t result_ok = {ARFILL_OK, 1};
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621 asn_random_fill_result_t result_failed = {ARFILL_FAILED, 0};
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622 asn_random_fill_result_t result_skipped = {ARFILL_SKIPPED, 0};
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623 OBJECT_IDENTIFIER_t *st;
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624 asn_oid_arc_t arcs[5];
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625 size_t arcs_len = asn_random_between(2, 5);
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630 if(max_length < arcs_len) return result_skipped;
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635 st = CALLOC(1, sizeof(*st));
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638 arcs[0] = asn_random_between(0, 2);
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639 arcs[1] = OBJECT_IDENTIFIER__biased_random_arc(
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640 arcs[0] <= 1 ? 39 : (ASN_OID_ARC_MAX - 80));
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641 for(i = 2; i < arcs_len; i++) {
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642 arcs[i] = OBJECT_IDENTIFIER__biased_random_arc(ASN_OID_ARC_MAX);
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645 if(OBJECT_IDENTIFIER_set_arcs(st, arcs, arcs_len)) {
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647 ASN_STRUCT_FREE(*td, st);
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649 return result_failed;
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654 result_ok.length = st->size;
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