inital commit

1 files changed, 1229 insertions, 0 deletions

diff --git a/openssl/crypto/asn1/tasn_dec.c b/openssl/crypto/asn1/tasn_dec.c
new file mode 100644
index 0000000..d254027
--- /dev/null
+++ b/openssl/crypto/asn1/tasn_dec.c
@@ -0,0 +1,1229 @@
+/* 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] = {
+    /* tags  0 -  3 */
+    0, 0, 0, B_ASN1_BIT_STRING,
+    /* tags  4- 7 */
+    B_ASN1_OCTET_STRING, 0, 0, B_ASN1_UNKNOWN,
+    /* tags  8-11 */
+    B_ASN1_UNKNOWN, B_ASN1_UNKNOWN, B_ASN1_UNKNOWN, B_ASN1_UNKNOWN,
+    /* tags 12-15 */
+    B_ASN1_UTF8STRING, B_ASN1_UNKNOWN, B_ASN1_UNKNOWN, B_ASN1_UNKNOWN,
+    /* tags 16-19 */
+    B_ASN1_SEQUENCE, 0, B_ASN1_NUMERICSTRING, B_ASN1_PRINTABLESTRING,
+    /* tags 20-22 */
+    B_ASN1_T61STRING, B_ASN1_VIDEOTEXSTRING, B_ASN1_IA5STRING,
+    /* tags 23-24 */
+    B_ASN1_UTCTIME, B_ASN1_GENERALIZEDTIME,
+    /* tags 25-27 */
+    B_ASN1_GRAPHICSTRING, B_ASN1_ISO64STRING, B_ASN1_GENERALSTRING,
+    /* tags 28-31 */
+    B_ASN1_UNIVERSALSTRING, B_ASN1_UNKNOWN, B_ASN1_BMPSTRING, B_ASN1_UNKNOWN,
+};
+
+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;
+    int combine = aclass & ASN1_TFLG_COMBINE;
+    aclass &= ~ASN1_TFLG_COMBINE;
+    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;
+        if (*pval) {
+            /* Free up and zero CHOICE value if initialised */
+            i = asn1_get_choice_selector(pval, it);
+            if ((i >= 0) && (i < it->tcount)) {
+                tt = it->templates + i;
+                pchptr = asn1_get_field_ptr(pval, tt);
+                ASN1_template_free(pchptr, tt);
+                asn1_set_choice_selector(pval, -1, it);
+            }
+        } else if (!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);
+        if (asn1_cb && !asn1_cb(ASN1_OP_D2I_POST, pval, it, NULL))
+            goto auxerr;
+        *in = p;
+        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;
+
+        /* Free up and zero any ADB found */
+        for (i = 0, tt = it->templates; i < it->tcount; i++, tt++) {
+            if (tt->flags & ASN1_TFLG_ADB_MASK) {
+                const ASN1_TEMPLATE *seqtt;
+                ASN1_VALUE **pseqval;
+                seqtt = asn1_do_adb(pval, tt, 0);
+                if (seqtt == NULL)
+                    continue;
+                pseqval = asn1_get_field_ptr(pval, seqtt);
+                ASN1_template_free(pseqval, seqtt);
+            }
+        }
+
+        /* 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 == NULL)
+                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 == NULL)
+                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;
+        if (asn1_cb && !asn1_cb(ASN1_OP_D2I_POST, pval, it, NULL))
+            goto auxerr;
+        *in = p;
+        return 1;
+
+    default:
+        return 0;
+    }
+ auxerr:
+    ASN1err(ASN1_F_ASN1_ITEM_EX_D2I, ASN1_R_AUX_ERROR);
+ err:
+    if (combine == 0)
+        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, tt->flags & ASN1_TFLG_COMBINE, 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 = { 0, NULL, 0 };
+    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;
+        }
+    } 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;
+        }
+
+        /* Free any returned 'buf' content */
+        free_cont = 1;
+        /*
+         * 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)) {
+            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);
+            goto err;
+        }
+        buf.data[len] = 0;
+        cont = (const unsigned char *)buf.data;
+    } else {
+        cont = p;
+        len = plen;
+        p += plen;
+    }
+
+    /* We now have content length and type: translate into a structure */
+    /* asn1_ex_c2i may reuse allocated buffer, and so sets free_cont to 0 */
+    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_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;
+}