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Diffstat (limited to 'main/openssl/crypto/asn1/tasn_dec.c')
m---------main/openssl0
-rw-r--r--main/openssl/crypto/asn1/tasn_dec.c1355
2 files changed, 0 insertions, 1355 deletions
diff --git a/main/openssl b/main/openssl
new file mode 160000
+Subproject 4d377a9ce111930d8a8f06dc0e94a892a7f6c51
diff --git a/main/openssl/crypto/asn1/tasn_dec.c b/main/openssl/crypto/asn1/tasn_dec.c
deleted file mode 100644
index 2cbfa814..00000000
--- a/main/openssl/crypto/asn1/tasn_dec.c
+++ /dev/null
@@ -1,1355 +0,0 @@
-/* tasn_dec.c */
-/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
- * project 2000.
- */
-/* ====================================================================
- * Copyright (c) 2000-2005 The OpenSSL Project. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- *
- * 3. All advertising materials mentioning features or use of this
- * software must display the following acknowledgment:
- * "This product includes software developed by the OpenSSL Project
- * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
- *
- * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
- * endorse or promote products derived from this software without
- * prior written permission. For written permission, please contact
- * licensing@OpenSSL.org.
- *
- * 5. Products derived from this software may not be called "OpenSSL"
- * nor may "OpenSSL" appear in their names without prior written
- * permission of the OpenSSL Project.
- *
- * 6. Redistributions of any form whatsoever must retain the following
- * acknowledgment:
- * "This product includes software developed by the OpenSSL Project
- * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
- *
- * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
- * EXPRESSED 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 OpenSSL PROJECT OR
- * ITS 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.
- * ====================================================================
- *
- * This product includes cryptographic software written by Eric Young
- * (eay@cryptsoft.com). This product includes software written by Tim
- * Hudson (tjh@cryptsoft.com).
- *
- */
-
-
-#include <stddef.h>
-#include <string.h>
-#include <openssl/asn1.h>
-#include <openssl/asn1t.h>
-#include <openssl/objects.h>
-#include <openssl/buffer.h>
-#include <openssl/err.h>
-
-static int asn1_check_eoc(const unsigned char **in, long len);
-static int asn1_find_end(const unsigned char **in, long len, char inf);
-
-static int asn1_collect(BUF_MEM *buf, const unsigned char **in, long len,
- char inf, int tag, int aclass, int depth);
-
-static int collect_data(BUF_MEM *buf, const unsigned char **p, long plen);
-
-static int asn1_check_tlen(long *olen, int *otag, unsigned char *oclass,
- char *inf, char *cst,
- const unsigned char **in, long len,
- int exptag, int expclass, char opt,
- ASN1_TLC *ctx);
-
-static int asn1_template_ex_d2i(ASN1_VALUE **pval,
- const unsigned char **in, long len,
- const ASN1_TEMPLATE *tt, char opt,
- ASN1_TLC *ctx);
-static int asn1_template_noexp_d2i(ASN1_VALUE **val,
- const unsigned char **in, long len,
- const ASN1_TEMPLATE *tt, char opt,
- ASN1_TLC *ctx);
-static int asn1_d2i_ex_primitive(ASN1_VALUE **pval,
- const unsigned char **in, long len,
- const ASN1_ITEM *it,
- int tag, int aclass, char opt, ASN1_TLC *ctx);
-
-/* Table to convert tags to bit values, used for MSTRING type */
-static const unsigned long tag2bit[32] = {
-0, 0, 0, B_ASN1_BIT_STRING, /* tags 0 - 3 */
-B_ASN1_OCTET_STRING, 0, 0, B_ASN1_UNKNOWN,/* tags 4- 7 */
-B_ASN1_UNKNOWN, B_ASN1_UNKNOWN, B_ASN1_UNKNOWN, B_ASN1_UNKNOWN,/* tags 8-11 */
-B_ASN1_UTF8STRING,B_ASN1_UNKNOWN,B_ASN1_UNKNOWN,B_ASN1_UNKNOWN,/* tags 12-15 */
-B_ASN1_SEQUENCE,0,B_ASN1_NUMERICSTRING,B_ASN1_PRINTABLESTRING, /* tags 16-19 */
-B_ASN1_T61STRING,B_ASN1_VIDEOTEXSTRING,B_ASN1_IA5STRING, /* tags 20-22 */
-B_ASN1_UTCTIME, B_ASN1_GENERALIZEDTIME, /* tags 23-24 */
-B_ASN1_GRAPHICSTRING,B_ASN1_ISO64STRING,B_ASN1_GENERALSTRING, /* tags 25-27 */
-B_ASN1_UNIVERSALSTRING,B_ASN1_UNKNOWN,B_ASN1_BMPSTRING,B_ASN1_UNKNOWN, /* tags 28-31 */
- };
-
-unsigned long ASN1_tag2bit(int tag)
- {
- if ((tag < 0) || (tag > 30)) return 0;
- return tag2bit[tag];
- }
-
-/* Macro to initialize and invalidate the cache */
-
-#define asn1_tlc_clear(c) if (c) (c)->valid = 0
-/* Version to avoid compiler warning about 'c' always non-NULL */
-#define asn1_tlc_clear_nc(c) (c)->valid = 0
-
-/* Decode an ASN1 item, this currently behaves just
- * like a standard 'd2i' function. 'in' points to
- * a buffer to read the data from, in future we will
- * have more advanced versions that can input data
- * a piece at a time and this will simply be a special
- * case.
- */
-
-ASN1_VALUE *ASN1_item_d2i(ASN1_VALUE **pval,
- const unsigned char **in, long len, const ASN1_ITEM *it)
- {
- ASN1_TLC c;
- ASN1_VALUE *ptmpval = NULL;
- if (!pval)
- pval = &ptmpval;
- asn1_tlc_clear_nc(&c);
- if (ASN1_item_ex_d2i(pval, in, len, it, -1, 0, 0, &c) > 0)
- return *pval;
- return NULL;
- }
-
-int ASN1_template_d2i(ASN1_VALUE **pval,
- const unsigned char **in, long len, const ASN1_TEMPLATE *tt)
- {
- ASN1_TLC c;
- asn1_tlc_clear_nc(&c);
- return asn1_template_ex_d2i(pval, in, len, tt, 0, &c);
- }
-
-
-/* Decode an item, taking care of IMPLICIT tagging, if any.
- * If 'opt' set and tag mismatch return -1 to handle OPTIONAL
- */
-
-int ASN1_item_ex_d2i(ASN1_VALUE **pval, const unsigned char **in, long len,
- const ASN1_ITEM *it,
- int tag, int aclass, char opt, ASN1_TLC *ctx)
- {
- const ASN1_TEMPLATE *tt, *errtt = NULL;
- const ASN1_COMPAT_FUNCS *cf;
- const ASN1_EXTERN_FUNCS *ef;
- const ASN1_AUX *aux = it->funcs;
- ASN1_aux_cb *asn1_cb;
- const unsigned char *p = NULL, *q;
- unsigned char *wp=NULL; /* BIG FAT WARNING! BREAKS CONST WHERE USED */
- unsigned char imphack = 0, oclass;
- char seq_eoc, seq_nolen, cst, isopt;
- long tmplen;
- int i;
- int otag;
- int ret = 0;
- ASN1_VALUE **pchptr, *ptmpval;
- if (!pval)
- return 0;
- if (aux && aux->asn1_cb)
- asn1_cb = aux->asn1_cb;
- else asn1_cb = 0;
-
- switch(it->itype)
- {
- case ASN1_ITYPE_PRIMITIVE:
- if (it->templates)
- {
- /* tagging or OPTIONAL is currently illegal on an item
- * template because the flags can't get passed down.
- * In practice this isn't a problem: we include the
- * relevant flags from the item template in the
- * template itself.
- */
- if ((tag != -1) || opt)
- {
- ASN1err(ASN1_F_ASN1_ITEM_EX_D2I,
- ASN1_R_ILLEGAL_OPTIONS_ON_ITEM_TEMPLATE);
- goto err;
- }
- return asn1_template_ex_d2i(pval, in, len,
- it->templates, opt, ctx);
- }
- return asn1_d2i_ex_primitive(pval, in, len, it,
- tag, aclass, opt, ctx);
- break;
-
- case ASN1_ITYPE_MSTRING:
- p = *in;
- /* Just read in tag and class */
- ret = asn1_check_tlen(NULL, &otag, &oclass, NULL, NULL,
- &p, len, -1, 0, 1, ctx);
- if (!ret)
- {
- ASN1err(ASN1_F_ASN1_ITEM_EX_D2I,
- ERR_R_NESTED_ASN1_ERROR);
- goto err;
- }
-
- /* Must be UNIVERSAL class */
- if (oclass != V_ASN1_UNIVERSAL)
- {
- /* If OPTIONAL, assume this is OK */
- if (opt) return -1;
- ASN1err(ASN1_F_ASN1_ITEM_EX_D2I,
- ASN1_R_MSTRING_NOT_UNIVERSAL);
- goto err;
- }
- /* Check tag matches bit map */
- if (!(ASN1_tag2bit(otag) & it->utype))
- {
- /* If OPTIONAL, assume this is OK */
- if (opt)
- return -1;
- ASN1err(ASN1_F_ASN1_ITEM_EX_D2I,
- ASN1_R_MSTRING_WRONG_TAG);
- goto err;
- }
- return asn1_d2i_ex_primitive(pval, in, len,
- it, otag, 0, 0, ctx);
-
- case ASN1_ITYPE_EXTERN:
- /* Use new style d2i */
- ef = it->funcs;
- return ef->asn1_ex_d2i(pval, in, len,
- it, tag, aclass, opt, ctx);
-
- case ASN1_ITYPE_COMPAT:
- /* we must resort to old style evil hackery */
- cf = it->funcs;
-
- /* If OPTIONAL see if it is there */
- if (opt)
- {
- int exptag;
- p = *in;
- if (tag == -1)
- exptag = it->utype;
- else exptag = tag;
- /* Don't care about anything other than presence
- * of expected tag */
-
- ret = asn1_check_tlen(NULL, NULL, NULL, NULL, NULL,
- &p, len, exptag, aclass, 1, ctx);
- if (!ret)
- {
- ASN1err(ASN1_F_ASN1_ITEM_EX_D2I,
- ERR_R_NESTED_ASN1_ERROR);
- goto err;
- }
- if (ret == -1)
- return -1;
- }
-
- /* This is the old style evil hack IMPLICIT handling:
- * since the underlying code is expecting a tag and
- * class other than the one present we change the
- * buffer temporarily then change it back afterwards.
- * This doesn't and never did work for tags > 30.
- *
- * Yes this is *horrible* but it is only needed for
- * old style d2i which will hopefully not be around
- * for much longer.
- * FIXME: should copy the buffer then modify it so
- * the input buffer can be const: we should *always*
- * copy because the old style d2i might modify the
- * buffer.
- */
-
- if (tag != -1)
- {
- wp = *(unsigned char **)in;
- imphack = *wp;
- if (p == NULL)
- {
- ASN1err(ASN1_F_ASN1_ITEM_EX_D2I,
- ERR_R_NESTED_ASN1_ERROR);
- goto err;
- }
- *wp = (unsigned char)((*p & V_ASN1_CONSTRUCTED)
- | it->utype);
- }
-
- ptmpval = cf->asn1_d2i(pval, in, len);
-
- if (tag != -1)
- *wp = imphack;
-
- if (ptmpval)
- return 1;
-
- ASN1err(ASN1_F_ASN1_ITEM_EX_D2I, ERR_R_NESTED_ASN1_ERROR);
- goto err;
-
-
- case ASN1_ITYPE_CHOICE:
- if (asn1_cb && !asn1_cb(ASN1_OP_D2I_PRE, pval, it, NULL))
- goto auxerr;
-
- /* Allocate structure */
- if (!*pval && !ASN1_item_ex_new(pval, it))
- {
- ASN1err(ASN1_F_ASN1_ITEM_EX_D2I,
- ERR_R_NESTED_ASN1_ERROR);
- goto err;
- }
- /* CHOICE type, try each possibility in turn */
- p = *in;
- for (i = 0, tt=it->templates; i < it->tcount; i++, tt++)
- {
- pchptr = asn1_get_field_ptr(pval, tt);
- /* We mark field as OPTIONAL so its absence
- * can be recognised.
- */
- ret = asn1_template_ex_d2i(pchptr, &p, len, tt, 1, ctx);
- /* If field not present, try the next one */
- if (ret == -1)
- continue;
- /* If positive return, read OK, break loop */
- if (ret > 0)
- break;
- /* Otherwise must be an ASN1 parsing error */
- errtt = tt;
- ASN1err(ASN1_F_ASN1_ITEM_EX_D2I,
- ERR_R_NESTED_ASN1_ERROR);
- goto err;
- }
-
- /* Did we fall off the end without reading anything? */
- if (i == it->tcount)
- {
- /* If OPTIONAL, this is OK */
- if (opt)
- {
- /* Free and zero it */
- ASN1_item_ex_free(pval, it);
- return -1;
- }
- ASN1err(ASN1_F_ASN1_ITEM_EX_D2I,
- ASN1_R_NO_MATCHING_CHOICE_TYPE);
- goto err;
- }
-
- asn1_set_choice_selector(pval, i, it);
- *in = p;
- if (asn1_cb && !asn1_cb(ASN1_OP_D2I_POST, pval, it, NULL))
- goto auxerr;
- return 1;
-
- case ASN1_ITYPE_NDEF_SEQUENCE:
- case ASN1_ITYPE_SEQUENCE:
- p = *in;
- tmplen = len;
-
- /* If no IMPLICIT tagging set to SEQUENCE, UNIVERSAL */
- if (tag == -1)
- {
- tag = V_ASN1_SEQUENCE;
- aclass = V_ASN1_UNIVERSAL;
- }
- /* Get SEQUENCE length and update len, p */
- ret = asn1_check_tlen(&len, NULL, NULL, &seq_eoc, &cst,
- &p, len, tag, aclass, opt, ctx);
- if (!ret)
- {
- ASN1err(ASN1_F_ASN1_ITEM_EX_D2I,
- ERR_R_NESTED_ASN1_ERROR);
- goto err;
- }
- else if (ret == -1)
- return -1;
- if (aux && (aux->flags & ASN1_AFLG_BROKEN))
- {
- len = tmplen - (p - *in);
- seq_nolen = 1;
- }
- /* If indefinite we don't do a length check */
- else seq_nolen = seq_eoc;
- if (!cst)
- {
- ASN1err(ASN1_F_ASN1_ITEM_EX_D2I,
- ASN1_R_SEQUENCE_NOT_CONSTRUCTED);
- goto err;
- }
-
- if (!*pval && !ASN1_item_ex_new(pval, it))
- {
- ASN1err(ASN1_F_ASN1_ITEM_EX_D2I,
- ERR_R_NESTED_ASN1_ERROR);
- goto err;
- }
-
- if (asn1_cb && !asn1_cb(ASN1_OP_D2I_PRE, pval, it, NULL))
- goto auxerr;
-
- /* Get each field entry */
- for (i = 0, tt = it->templates; i < it->tcount; i++, tt++)
- {
- const ASN1_TEMPLATE *seqtt;
- ASN1_VALUE **pseqval;
- seqtt = asn1_do_adb(pval, tt, 1);
- if (!seqtt)
- goto err;
- pseqval = asn1_get_field_ptr(pval, seqtt);
- /* Have we ran out of data? */
- if (!len)
- break;
- q = p;
- if (asn1_check_eoc(&p, len))
- {
- if (!seq_eoc)
- {
- ASN1err(ASN1_F_ASN1_ITEM_EX_D2I,
- ASN1_R_UNEXPECTED_EOC);
- goto err;
- }
- len -= p - q;
- seq_eoc = 0;
- q = p;
- break;
- }
- /* This determines the OPTIONAL flag value. The field
- * cannot be omitted if it is the last of a SEQUENCE
- * and there is still data to be read. This isn't
- * strictly necessary but it increases efficiency in
- * some cases.
- */
- if (i == (it->tcount - 1))
- isopt = 0;
- else isopt = (char)(seqtt->flags & ASN1_TFLG_OPTIONAL);
- /* attempt to read in field, allowing each to be
- * OPTIONAL */
-
- ret = asn1_template_ex_d2i(pseqval, &p, len,
- seqtt, isopt, ctx);
- if (!ret)
- {
- errtt = seqtt;
- goto err;
- }
- else if (ret == -1)
- {
- /* OPTIONAL component absent.
- * Free and zero the field.
- */
- ASN1_template_free(pseqval, seqtt);
- continue;
- }
- /* Update length */
- len -= p - q;
- }
-
- /* Check for EOC if expecting one */
- if (seq_eoc && !asn1_check_eoc(&p, len))
- {
- ASN1err(ASN1_F_ASN1_ITEM_EX_D2I, ASN1_R_MISSING_EOC);
- goto err;
- }
- /* Check all data read */
- if (!seq_nolen && len)
- {
- ASN1err(ASN1_F_ASN1_ITEM_EX_D2I,
- ASN1_R_SEQUENCE_LENGTH_MISMATCH);
- goto err;
- }
-
- /* If we get here we've got no more data in the SEQUENCE,
- * however we may not have read all fields so check all
- * remaining are OPTIONAL and clear any that are.
- */
- for (; i < it->tcount; tt++, i++)
- {
- const ASN1_TEMPLATE *seqtt;
- seqtt = asn1_do_adb(pval, tt, 1);
- if (!seqtt)
- goto err;
- if (seqtt->flags & ASN1_TFLG_OPTIONAL)
- {
- ASN1_VALUE **pseqval;
- pseqval = asn1_get_field_ptr(pval, seqtt);
- ASN1_template_free(pseqval, seqtt);
- }
- else
- {
- errtt = seqtt;
- ASN1err(ASN1_F_ASN1_ITEM_EX_D2I,
- ASN1_R_FIELD_MISSING);
- goto err;
- }
- }
- /* Save encoding */
- if (!asn1_enc_save(pval, *in, p - *in, it))
- goto auxerr;
- *in = p;
- if (asn1_cb && !asn1_cb(ASN1_OP_D2I_POST, pval, it, NULL))
- goto auxerr;
- return 1;
-
- default:
- return 0;
- }
- auxerr:
- ASN1err(ASN1_F_ASN1_ITEM_EX_D2I, ASN1_R_AUX_ERROR);
- err:
- ASN1_item_ex_free(pval, it);
- if (errtt)
- ERR_add_error_data(4, "Field=", errtt->field_name,
- ", Type=", it->sname);
- else
- ERR_add_error_data(2, "Type=", it->sname);
- return 0;
- }
-
-/* Templates are handled with two separate functions.
- * One handles any EXPLICIT tag and the other handles the rest.
- */
-
-static int asn1_template_ex_d2i(ASN1_VALUE **val,
- const unsigned char **in, long inlen,
- const ASN1_TEMPLATE *tt, char opt,
- ASN1_TLC *ctx)
- {
- int flags, aclass;
- int ret;
- long len;
- const unsigned char *p, *q;
- char exp_eoc;
- if (!val)
- return 0;
- flags = tt->flags;
- aclass = flags & ASN1_TFLG_TAG_CLASS;
-
- p = *in;
-
- /* Check if EXPLICIT tag expected */
- if (flags & ASN1_TFLG_EXPTAG)
- {
- char cst;
- /* Need to work out amount of data available to the inner
- * content and where it starts: so read in EXPLICIT header to
- * get the info.
- */
- ret = asn1_check_tlen(&len, NULL, NULL, &exp_eoc, &cst,
- &p, inlen, tt->tag, aclass, opt, ctx);
- q = p;
- if (!ret)
- {
- ASN1err(ASN1_F_ASN1_TEMPLATE_EX_D2I,
- ERR_R_NESTED_ASN1_ERROR);
- return 0;
- }
- else if (ret == -1)
- return -1;
- if (!cst)
- {
- ASN1err(ASN1_F_ASN1_TEMPLATE_EX_D2I,
- ASN1_R_EXPLICIT_TAG_NOT_CONSTRUCTED);
- return 0;
- }
- /* We've found the field so it can't be OPTIONAL now */
- ret = asn1_template_noexp_d2i(val, &p, len, tt, 0, ctx);
- if (!ret)
- {
- ASN1err(ASN1_F_ASN1_TEMPLATE_EX_D2I,
- ERR_R_NESTED_ASN1_ERROR);
- return 0;
- }
- /* We read the field in OK so update length */
- len -= p - q;
- if (exp_eoc)
- {
- /* If NDEF we must have an EOC here */
- if (!asn1_check_eoc(&p, len))
- {
- ASN1err(ASN1_F_ASN1_TEMPLATE_EX_D2I,
- ASN1_R_MISSING_EOC);
- goto err;
- }
- }
- else
- {
- /* Otherwise we must hit the EXPLICIT tag end or its
- * an error */
- if (len)
- {
- ASN1err(ASN1_F_ASN1_TEMPLATE_EX_D2I,
- ASN1_R_EXPLICIT_LENGTH_MISMATCH);
- goto err;
- }
- }
- }
- else
- return asn1_template_noexp_d2i(val, in, inlen,
- tt, opt, ctx);
-
- *in = p;
- return 1;
-
- err:
- ASN1_template_free(val, tt);
- return 0;
- }
-
-static int asn1_template_noexp_d2i(ASN1_VALUE **val,
- const unsigned char **in, long len,
- const ASN1_TEMPLATE *tt, char opt,
- ASN1_TLC *ctx)
- {
- int flags, aclass;
- int ret;
- const unsigned char *p, *q;
- if (!val)
- return 0;
- flags = tt->flags;
- aclass = flags & ASN1_TFLG_TAG_CLASS;
-
- p = *in;
- q = p;
-
- if (flags & ASN1_TFLG_SK_MASK)
- {
- /* SET OF, SEQUENCE OF */
- int sktag, skaclass;
- char sk_eoc;
- /* First work out expected inner tag value */
- if (flags & ASN1_TFLG_IMPTAG)
- {
- sktag = tt->tag;
- skaclass = aclass;
- }
- else
- {
- skaclass = V_ASN1_UNIVERSAL;
- if (flags & ASN1_TFLG_SET_OF)
- sktag = V_ASN1_SET;
- else
- sktag = V_ASN1_SEQUENCE;
- }
- /* Get the tag */
- ret = asn1_check_tlen(&len, NULL, NULL, &sk_eoc, NULL,
- &p, len, sktag, skaclass, opt, ctx);
- if (!ret)
- {
- ASN1err(ASN1_F_ASN1_TEMPLATE_NOEXP_D2I,
- ERR_R_NESTED_ASN1_ERROR);
- return 0;
- }
- else if (ret == -1)
- return -1;
- if (!*val)
- *val = (ASN1_VALUE *)sk_new_null();
- else
- {
- /* We've got a valid STACK: free up any items present */
- STACK_OF(ASN1_VALUE) *sktmp
- = (STACK_OF(ASN1_VALUE) *)*val;
- ASN1_VALUE *vtmp;
- while(sk_ASN1_VALUE_num(sktmp) > 0)
- {
- vtmp = sk_ASN1_VALUE_pop(sktmp);
- ASN1_item_ex_free(&vtmp,
- ASN1_ITEM_ptr(tt->item));
- }
- }
-
- if (!*val)
- {
- ASN1err(ASN1_F_ASN1_TEMPLATE_NOEXP_D2I,
- ERR_R_MALLOC_FAILURE);
- goto err;
- }
-
- /* Read as many items as we can */
- while(len > 0)
- {
- ASN1_VALUE *skfield;
- q = p;
- /* See if EOC found */
- if (asn1_check_eoc(&p, len))
- {
- if (!sk_eoc)
- {
- ASN1err(ASN1_F_ASN1_TEMPLATE_NOEXP_D2I,
- ASN1_R_UNEXPECTED_EOC);
- goto err;
- }
- len -= p - q;
- sk_eoc = 0;
- break;
- }
- skfield = NULL;
- if (!ASN1_item_ex_d2i(&skfield, &p, len,
- ASN1_ITEM_ptr(tt->item),
- -1, 0, 0, ctx))
- {
- ASN1err(ASN1_F_ASN1_TEMPLATE_NOEXP_D2I,
- ERR_R_NESTED_ASN1_ERROR);
- goto err;
- }
- len -= p - q;
- if (!sk_ASN1_VALUE_push((STACK_OF(ASN1_VALUE) *)*val,
- skfield))
- {
- ASN1err(ASN1_F_ASN1_TEMPLATE_NOEXP_D2I,
- ERR_R_MALLOC_FAILURE);
- goto err;
- }
- }
- if (sk_eoc)
- {
- ASN1err(ASN1_F_ASN1_TEMPLATE_NOEXP_D2I, ASN1_R_MISSING_EOC);
- goto err;
- }
- }
- else if (flags & ASN1_TFLG_IMPTAG)
- {
- /* IMPLICIT tagging */
- ret = ASN1_item_ex_d2i(val, &p, len,
- ASN1_ITEM_ptr(tt->item), tt->tag, aclass, opt, ctx);
- if (!ret)
- {
- ASN1err(ASN1_F_ASN1_TEMPLATE_NOEXP_D2I,
- ERR_R_NESTED_ASN1_ERROR);
- goto err;
- }
- else if (ret == -1)
- return -1;
- }
- else
- {
- /* Nothing special */
- ret = ASN1_item_ex_d2i(val, &p, len, ASN1_ITEM_ptr(tt->item),
- -1, 0, opt, ctx);
- if (!ret)
- {
- ASN1err(ASN1_F_ASN1_TEMPLATE_NOEXP_D2I,
- ERR_R_NESTED_ASN1_ERROR);
- goto err;
- }
- else if (ret == -1)
- return -1;
- }
-
- *in = p;
- return 1;
-
- err:
- ASN1_template_free(val, tt);
- return 0;
- }
-
-static int asn1_d2i_ex_primitive(ASN1_VALUE **pval,
- const unsigned char **in, long inlen,
- const ASN1_ITEM *it,
- int tag, int aclass, char opt, ASN1_TLC *ctx)
- {
- int ret = 0, utype;
- long plen;
- char cst, inf, free_cont = 0;
- const unsigned char *p;
- BUF_MEM buf;
- const unsigned char *cont = NULL;
- long len;
- if (!pval)
- {
- ASN1err(ASN1_F_ASN1_D2I_EX_PRIMITIVE, ASN1_R_ILLEGAL_NULL);
- return 0; /* Should never happen */
- }
-
- if (it->itype == ASN1_ITYPE_MSTRING)
- {
- utype = tag;
- tag = -1;
- }
- else
- utype = it->utype;
-
- if (utype == V_ASN1_ANY)
- {
- /* If type is ANY need to figure out type from tag */
- unsigned char oclass;
- if (tag >= 0)
- {
- ASN1err(ASN1_F_ASN1_D2I_EX_PRIMITIVE,
- ASN1_R_ILLEGAL_TAGGED_ANY);
- return 0;
- }
- if (opt)
- {
- ASN1err(ASN1_F_ASN1_D2I_EX_PRIMITIVE,
- ASN1_R_ILLEGAL_OPTIONAL_ANY);
- return 0;
- }
- p = *in;
- ret = asn1_check_tlen(NULL, &utype, &oclass, NULL, NULL,
- &p, inlen, -1, 0, 0, ctx);
- if (!ret)
- {
- ASN1err(ASN1_F_ASN1_D2I_EX_PRIMITIVE,
- ERR_R_NESTED_ASN1_ERROR);
- return 0;
- }
- if (oclass != V_ASN1_UNIVERSAL)
- utype = V_ASN1_OTHER;
- }
- if (tag == -1)
- {
- tag = utype;
- aclass = V_ASN1_UNIVERSAL;
- }
- p = *in;
- /* Check header */
- ret = asn1_check_tlen(&plen, NULL, NULL, &inf, &cst,
- &p, inlen, tag, aclass, opt, ctx);
- if (!ret)
- {
- ASN1err(ASN1_F_ASN1_D2I_EX_PRIMITIVE, ERR_R_NESTED_ASN1_ERROR);
- return 0;
- }
- else if (ret == -1)
- return -1;
- ret = 0;
- /* SEQUENCE, SET and "OTHER" are left in encoded form */
- if ((utype == V_ASN1_SEQUENCE)
- || (utype == V_ASN1_SET) || (utype == V_ASN1_OTHER))
- {
- /* Clear context cache for type OTHER because the auto clear
- * when we have a exact match wont work
- */
- if (utype == V_ASN1_OTHER)
- {
- asn1_tlc_clear(ctx);
- }
- /* SEQUENCE and SET must be constructed */
- else if (!cst)
- {
- ASN1err(ASN1_F_ASN1_D2I_EX_PRIMITIVE,
- ASN1_R_TYPE_NOT_CONSTRUCTED);
- return 0;
- }
-
- cont = *in;
- /* If indefinite length constructed find the real end */
- if (inf)
- {
- if (!asn1_find_end(&p, plen, inf))
- goto err;
- len = p - cont;
- }
- else
- {
- len = p - cont + plen;
- p += plen;
- buf.data = NULL;
- }
- }
- else if (cst)
- {
- if (utype == V_ASN1_NULL || utype == V_ASN1_BOOLEAN
- || utype == V_ASN1_OBJECT || utype == V_ASN1_INTEGER
- || utype == V_ASN1_ENUMERATED)
- {
- ASN1err(ASN1_F_ASN1_D2I_EX_PRIMITIVE,
- ASN1_R_TYPE_NOT_PRIMITIVE);
- return 0;
- }
- buf.length = 0;
- buf.max = 0;
- buf.data = NULL;
- /* Should really check the internal tags are correct but
- * some things may get this wrong. The relevant specs
- * say that constructed string types should be OCTET STRINGs
- * internally irrespective of the type. So instead just check
- * for UNIVERSAL class and ignore the tag.
- */
- if (!asn1_collect(&buf, &p, plen, inf, -1, V_ASN1_UNIVERSAL, 0))
- {
- free_cont = 1;
- goto err;
- }
- len = buf.length;
- /* Append a final null to string */
- if (!BUF_MEM_grow_clean(&buf, len + 1))
- {
- ASN1err(ASN1_F_ASN1_D2I_EX_PRIMITIVE,
- ERR_R_MALLOC_FAILURE);
- return 0;
- }
- buf.data[len] = 0;
- cont = (const unsigned char *)buf.data;
- free_cont = 1;
- }
- else
- {
- cont = p;
- len = plen;
- p += plen;
- }
-
- /* We now have content length and type: translate into a structure */
- if (!asn1_ex_c2i(pval, cont, len, utype, &free_cont, it))
- goto err;
-
- *in = p;
- ret = 1;
- err:
- if (free_cont && buf.data) OPENSSL_free(buf.data);
- return ret;
- }
-
-/* Translate ASN1 content octets into a structure */
-
-int asn1_ex_c2i(ASN1_VALUE **pval, const unsigned char *cont, int len,
- int utype, char *free_cont, const ASN1_ITEM *it)
- {
- ASN1_VALUE **opval = NULL;
- ASN1_STRING *stmp;
- ASN1_TYPE *typ = NULL;
- int ret = 0;
- const ASN1_PRIMITIVE_FUNCS *pf;
- ASN1_INTEGER **tint;
- pf = it->funcs;
-
- if (pf && pf->prim_c2i)
- return pf->prim_c2i(pval, cont, len, utype, free_cont, it);
- /* If ANY type clear type and set pointer to internal value */
- if (it->utype == V_ASN1_ANY)
- {
- if (!*pval)
- {
- typ = ASN1_TYPE_new();
- if (typ == NULL)
- goto err;
- *pval = (ASN1_VALUE *)typ;
- }
- else
- typ = (ASN1_TYPE *)*pval;
-
- if (utype != typ->type)
- ASN1_TYPE_set(typ, utype, NULL);
- opval = pval;
- pval = &typ->value.asn1_value;
- }
- switch(utype)
- {
- case V_ASN1_OBJECT:
- if (!c2i_ASN1_OBJECT((ASN1_OBJECT **)pval, &cont, len))
- goto err;
- break;
-
- case V_ASN1_NULL:
- if (len)
- {
- ASN1err(ASN1_F_ASN1_EX_C2I,
- ASN1_R_NULL_IS_WRONG_LENGTH);
- goto err;
- }
- *pval = (ASN1_VALUE *)1;
- break;
-
- case V_ASN1_BOOLEAN:
- if (len != 1)
- {
- ASN1err(ASN1_F_ASN1_EX_C2I,
- ASN1_R_BOOLEAN_IS_WRONG_LENGTH);
- goto err;
- }
- else
- {
- ASN1_BOOLEAN *tbool;
- tbool = (ASN1_BOOLEAN *)pval;
- *tbool = *cont;
- }
- break;
-
- case V_ASN1_BIT_STRING:
- if (!c2i_ASN1_BIT_STRING((ASN1_BIT_STRING **)pval, &cont, len))
- goto err;
- break;
-
- case V_ASN1_INTEGER:
- case V_ASN1_NEG_INTEGER:
- case V_ASN1_ENUMERATED:
- case V_ASN1_NEG_ENUMERATED:
- tint = (ASN1_INTEGER **)pval;
- if (!c2i_ASN1_INTEGER(tint, &cont, len))
- goto err;
- /* Fixup type to match the expected form */
- (*tint)->type = utype | ((*tint)->type & V_ASN1_NEG);
- break;
-
- case V_ASN1_OCTET_STRING:
- case V_ASN1_NUMERICSTRING:
- case V_ASN1_PRINTABLESTRING:
- case V_ASN1_T61STRING:
- case V_ASN1_VIDEOTEXSTRING:
- case V_ASN1_IA5STRING:
- case V_ASN1_UTCTIME:
- case V_ASN1_GENERALIZEDTIME:
- case V_ASN1_GRAPHICSTRING:
- case V_ASN1_VISIBLESTRING:
- case V_ASN1_GENERALSTRING:
- case V_ASN1_UNIVERSALSTRING:
- case V_ASN1_BMPSTRING:
- case V_ASN1_UTF8STRING:
- case V_ASN1_OTHER:
- case V_ASN1_SET:
- case V_ASN1_SEQUENCE:
- default:
- if (utype == V_ASN1_BMPSTRING && (len & 1))
- {
- ASN1err(ASN1_F_ASN1_EX_C2I,
- ASN1_R_BMPSTRING_IS_WRONG_LENGTH);
- goto err;
- }
- if (utype == V_ASN1_UNIVERSALSTRING && (len & 3))
- {
- ASN1err(ASN1_F_ASN1_EX_C2I,
- ASN1_R_UNIVERSALSTRING_IS_WRONG_LENGTH);
- goto err;
- }
- /* All based on ASN1_STRING and handled the same */
- if (!*pval)
- {
- stmp = ASN1_STRING_type_new(utype);
- if (!stmp)
- {
- ASN1err(ASN1_F_ASN1_EX_C2I,
- ERR_R_MALLOC_FAILURE);
- goto err;
- }
- *pval = (ASN1_VALUE *)stmp;
- }
- else
- {
- stmp = (ASN1_STRING *)*pval;
- stmp->type = utype;
- }
- /* If we've already allocated a buffer use it */
- if (*free_cont)
- {
- if (stmp->data)
- OPENSSL_free(stmp->data);
- stmp->data = (unsigned char *)cont; /* UGLY CAST! RL */
- stmp->length = len;
- *free_cont = 0;
- }
- else
- {
- if (!ASN1_STRING_set(stmp, cont, len))
- {
- ASN1err(ASN1_F_ASN1_EX_C2I,
- ERR_R_MALLOC_FAILURE);
- ASN1_STRING_free(stmp);
- *pval = NULL;
- goto err;
- }
- }
- break;
- }
- /* If ASN1_ANY and NULL type fix up value */
- if (typ && (utype == V_ASN1_NULL))
- typ->value.ptr = NULL;
-
- ret = 1;
- err:
- if (!ret)
- {
- ASN1_TYPE_free(typ);
- if (opval)
- *opval = NULL;
- }
- return ret;
- }
-
-
-/* This function finds the end of an ASN1 structure when passed its maximum
- * length, whether it is indefinite length and a pointer to the content.
- * This is more efficient than calling asn1_collect because it does not
- * recurse on each indefinite length header.
- */
-
-static int asn1_find_end(const unsigned char **in, long len, char inf)
- {
- int expected_eoc;
- long plen;
- const unsigned char *p = *in, *q;
- /* If not indefinite length constructed just add length */
- if (inf == 0)
- {
- *in += len;
- return 1;
- }
- expected_eoc = 1;
- /* Indefinite length constructed form. Find the end when enough EOCs
- * are found. If more indefinite length constructed headers
- * are encountered increment the expected eoc count otherwise just
- * skip to the end of the data.
- */
- while (len > 0)
- {
- if(asn1_check_eoc(&p, len))
- {
- expected_eoc--;
- if (expected_eoc == 0)
- break;
- len -= 2;
- continue;
- }
- q = p;
- /* Just read in a header: only care about the length */
- if(!asn1_check_tlen(&plen, NULL, NULL, &inf, NULL, &p, len,
- -1, 0, 0, NULL))
- {
- ASN1err(ASN1_F_ASN1_FIND_END, ERR_R_NESTED_ASN1_ERROR);
- return 0;
- }
- if (inf)
- expected_eoc++;
- else
- p += plen;
- len -= p - q;
- }
- if (expected_eoc)
- {
- ASN1err(ASN1_F_ASN1_FIND_END, ASN1_R_MISSING_EOC);
- return 0;
- }
- *in = p;
- return 1;
- }
-/* This function collects the asn1 data from a constructred string
- * type into a buffer. The values of 'in' and 'len' should refer
- * to the contents of the constructed type and 'inf' should be set
- * if it is indefinite length.
- */
-
-#ifndef ASN1_MAX_STRING_NEST
-/* This determines how many levels of recursion are permitted in ASN1
- * string types. If it is not limited stack overflows can occur. If set
- * to zero no recursion is allowed at all. Although zero should be adequate
- * examples exist that require a value of 1. So 5 should be more than enough.
- */
-#define ASN1_MAX_STRING_NEST 5
-#endif
-
-
-static int asn1_collect(BUF_MEM *buf, const unsigned char **in, long len,
- char inf, int tag, int aclass, int depth)
- {
- const unsigned char *p, *q;
- long plen;
- char cst, ininf;
- p = *in;
- inf &= 1;
- /* If no buffer and not indefinite length constructed just pass over
- * the encoded data */
- if (!buf && !inf)
- {
- *in += len;
- return 1;
- }
- while(len > 0)
- {
- q = p;
- /* Check for EOC */
- if (asn1_check_eoc(&p, len))
- {
- /* EOC is illegal outside indefinite length
- * constructed form */
- if (!inf)
- {
- ASN1err(ASN1_F_ASN1_COLLECT,
- ASN1_R_UNEXPECTED_EOC);
- return 0;
- }
- inf = 0;
- break;
- }
-
- if (!asn1_check_tlen(&plen, NULL, NULL, &ininf, &cst, &p,
- len, tag, aclass, 0, NULL))
- {
- ASN1err(ASN1_F_ASN1_COLLECT, ERR_R_NESTED_ASN1_ERROR);
- return 0;
- }
-
- /* If indefinite length constructed update max length */
- if (cst)
- {
- if (depth >= ASN1_MAX_STRING_NEST)
- {
- ASN1err(ASN1_F_ASN1_COLLECT,
- ASN1_R_NESTED_ASN1_STRING);
- return 0;
- }
- if (!asn1_collect(buf, &p, plen, ininf, tag, aclass,
- depth + 1))
- return 0;
- }
- else if (plen && !collect_data(buf, &p, plen))
- return 0;
- len -= p - q;
- }
- if (inf)
- {
- ASN1err(ASN1_F_ASN1_COLLECT, ASN1_R_MISSING_EOC);
- return 0;
- }
- *in = p;
- return 1;
- }
-
-static int collect_data(BUF_MEM *buf, const unsigned char **p, long plen)
- {
- int len;
- if (buf)
- {
- len = buf->length;
- if (!BUF_MEM_grow_clean(buf, len + plen))
- {
- ASN1err(ASN1_F_COLLECT_DATA, ERR_R_MALLOC_FAILURE);
- return 0;
- }
- memcpy(buf->data + len, *p, plen);
- }
- *p += plen;
- return 1;
- }
-
-/* Check for ASN1 EOC and swallow it if found */
-
-static int asn1_check_eoc(const unsigned char **in, long len)
- {
- const unsigned char *p;
- if (len < 2) return 0;
- p = *in;
- if (!p[0] && !p[1])
- {
- *in += 2;
- return 1;
- }
- return 0;
- }
-
-/* Check an ASN1 tag and length: a bit like ASN1_get_object
- * but it sets the length for indefinite length constructed
- * form, we don't know the exact length but we can set an
- * upper bound to the amount of data available minus the
- * header length just read.
- */
-
-static int asn1_check_tlen(long *olen, int *otag, unsigned char *oclass,
- char *inf, char *cst,
- const unsigned char **in, long len,
- int exptag, int expclass, char opt,
- ASN1_TLC *ctx)
- {
- int i;
- int ptag, pclass;
- long plen;
- const unsigned char *p, *q;
- p = *in;
- q = p;
-
- if (ctx && ctx->valid)
- {
- i = ctx->ret;
- plen = ctx->plen;
- pclass = ctx->pclass;
- ptag = ctx->ptag;
- p += ctx->hdrlen;
- }
- else
- {
- i = ASN1_get_object(&p, &plen, &ptag, &pclass, len);
- if (ctx)
- {
- ctx->ret = i;
- ctx->plen = plen;
- ctx->pclass = pclass;
- ctx->ptag = ptag;
- ctx->hdrlen = p - q;
- ctx->valid = 1;
- /* If definite length, and no error, length +
- * header can't exceed total amount of data available.
- */
- if (!(i & 0x81) && ((plen + ctx->hdrlen) > len))
- {
- ASN1err(ASN1_F_ASN1_CHECK_TLEN,
- ASN1_R_TOO_LONG);
- asn1_tlc_clear(ctx);
- return 0;
- }
- }
- }
-
- if (i & 0x80)
- {
- ASN1err(ASN1_F_ASN1_CHECK_TLEN, ASN1_R_BAD_OBJECT_HEADER);
- asn1_tlc_clear(ctx);
- return 0;
- }
- if (exptag >= 0)
- {
- if ((exptag != ptag) || (expclass != pclass))
- {
- /* If type is OPTIONAL, not an error:
- * indicate missing type.
- */
- if (opt) return -1;
- asn1_tlc_clear(ctx);
- ASN1err(ASN1_F_ASN1_CHECK_TLEN, ASN1_R_WRONG_TAG);
- return 0;
- }
- /* We have a tag and class match:
- * assume we are going to do something with it */
- asn1_tlc_clear(ctx);
- }
-
- if (i & 1)
- plen = len - (p - q);
-
- if (inf)
- *inf = i & 1;
-
- if (cst)
- *cst = i & V_ASN1_CONSTRUCTED;
-
- if (olen)
- *olen = plen;
-
- if (oclass)
- *oclass = pclass;
-
- if (otag)
- *otag = ptag;
-
- *in = p;
- return 1;
- }
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-04 12:18:42 +0000