1 files changed, 500 insertions, 0 deletions

diff --git a/src/lib/libcrypto/asn1/tasn_enc.c b/src/lib/libcrypto/asn1/tasn_enc.c
new file mode 100644
index 0000000000..c675c3c832
--- /dev/null
+++ b/src/lib/libcrypto/asn1/tasn_enc.c
@@ -0,0 +1,500 @@
+/* tasn_enc.c */
+/* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
+ * project 2000.
+ */
+/* ====================================================================
+ * Copyright (c) 2000 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>
+
+static int asn1_i2d_ex_primitive(ASN1_VALUE **pval, unsigned char **out, const ASN1_ITEM *it, int tag, int aclass);
+static int asn1_set_seq_out(STACK_OF(ASN1_VALUE) *seq, unsigned char **out, int skcontlen, const ASN1_ITEM *item, int isset);
+
+/* Encode an ASN1 item, this is compatible with the
+ * standard 'i2d' function. 'out' points to 
+ * a buffer to output the data to, in future we will
+ * have more advanced versions that can output data
+ * a piece at a time and this will simply be a special
+ * case.
+ *
+ * The new i2d has one additional feature. If the output
+ * buffer is NULL (i.e. *out == NULL) then a buffer is
+ * allocated and populated with the encoding.
+ */
+
+
+int ASN1_item_i2d(ASN1_VALUE *val, unsigned char **out, const ASN1_ITEM *it)
+{
+        if(out && !*out) {
+                unsigned char *p, *buf;
+                int len;
+                len = ASN1_item_ex_i2d(&val, NULL, it, -1, 0);
+                if(len <= 0) return len;
+                buf = OPENSSL_malloc(len);
+                if(!buf) return -1;
+                p = buf;
+                ASN1_item_ex_i2d(&val, &p, it, -1, 0);
+                *out = buf;
+                return len;
+        }
+                
+        return ASN1_item_ex_i2d(&val, out, it, -1, 0);
+}
+
+/* Encode an item, taking care of IMPLICIT tagging (if any).
+ * This function performs the normal item handling: it can be
+ * used in external types.
+ */
+
+int ASN1_item_ex_i2d(ASN1_VALUE **pval, unsigned char **out, const ASN1_ITEM *it, int tag, int aclass)
+{
+        const ASN1_TEMPLATE *tt = NULL;
+        unsigned char *p = NULL;
+        int i, seqcontlen, seqlen;
+        ASN1_STRING *strtmp;
+        const ASN1_COMPAT_FUNCS *cf;
+        const ASN1_EXTERN_FUNCS *ef;
+        const ASN1_AUX *aux = it->funcs;
+        ASN1_aux_cb *asn1_cb;
+        if((it->itype != ASN1_ITYPE_PRIMITIVE) && !*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)
+                        return ASN1_template_i2d(pval, out, it->templates);
+                return asn1_i2d_ex_primitive(pval, out, it, tag, aclass);
+                break;
+
+                case ASN1_ITYPE_MSTRING:
+                strtmp = (ASN1_STRING *)*pval;
+                return asn1_i2d_ex_primitive(pval, out, it, -1, 0);
+
+                case ASN1_ITYPE_CHOICE:
+                if(asn1_cb && !asn1_cb(ASN1_OP_I2D_PRE, pval, it))
+                                return 0;
+                i = asn1_get_choice_selector(pval, it);
+                if((i >= 0) && (i < it->tcount)) {
+                        ASN1_VALUE **pchval;
+                        const ASN1_TEMPLATE *chtt;
+                        chtt = it->templates + i;
+                        pchval = asn1_get_field_ptr(pval, chtt);
+                        return ASN1_template_i2d(pchval, out, chtt);
+                } 
+                /* Fixme: error condition if selector out of range */
+                if(asn1_cb && !asn1_cb(ASN1_OP_I2D_POST, pval, it))
+                                return 0;
+                break;
+
+                case ASN1_ITYPE_EXTERN:
+                /* If new style i2d it does all the work */
+                ef = it->funcs;
+                return ef->asn1_ex_i2d(pval, out, it, tag, aclass);
+
+                case ASN1_ITYPE_COMPAT:
+                /* old style hackery... */
+                cf = it->funcs;
+                if(out) p = *out;
+                i = cf->asn1_i2d(*pval, out);
+                /* Fixup for IMPLICIT tag: note this messes up for tags > 30,
+                 * but so did the old code. Tags > 30 are very rare anyway.
+                 */
+                if(out && (tag != -1))
+                        *p = aclass | tag | (*p & V_ASN1_CONSTRUCTED);
+                return i;
+                
+                case ASN1_ITYPE_SEQUENCE:
+                i = asn1_enc_restore(&seqcontlen, out, pval, it);
+                /* An error occurred */
+                if(i < 0) return 0;
+                /* We have a valid cached encoding... */
+                if(i > 0) return seqcontlen;
+                /* Otherwise carry on */
+                seqcontlen = 0;
+                /* If no IMPLICIT tagging set to SEQUENCE, UNIVERSAL */
+                if(tag == -1) {
+                        tag = V_ASN1_SEQUENCE;
+                        aclass = V_ASN1_UNIVERSAL;
+                }
+                if(asn1_cb && !asn1_cb(ASN1_OP_I2D_PRE, pval, it))
+                                return 0;
+                /* First work out sequence content length */
+                for(i = 0, tt = it->templates; i < it->tcount; tt++, i++) {
+                        const ASN1_TEMPLATE *seqtt;
+                        ASN1_VALUE **pseqval;
+                        seqtt = asn1_do_adb(pval, tt, 1);
+                        if(!seqtt) return 0;
+                        pseqval = asn1_get_field_ptr(pval, seqtt);
+                        /* FIXME: check for errors in enhanced version */
+                        /* FIXME: special handling of indefinite length encoding */
+                        seqcontlen += ASN1_template_i2d(pseqval, NULL, seqtt);
+                }
+                seqlen = ASN1_object_size(1, seqcontlen, tag);
+                if(!out) return seqlen;
+                /* Output SEQUENCE header */
+                ASN1_put_object(out, 1, seqcontlen, tag, aclass);
+                for(i = 0, tt = it->templates; i < it->tcount; tt++, i++) {
+                        const ASN1_TEMPLATE *seqtt;
+                        ASN1_VALUE **pseqval;
+                        seqtt = asn1_do_adb(pval, tt, 1);
+                        if(!seqtt) return 0;
+                        pseqval = asn1_get_field_ptr(pval, seqtt);
+                        /* FIXME: check for errors in enhanced version */
+                        ASN1_template_i2d(pseqval, out, seqtt);
+                }
+                if(asn1_cb  && !asn1_cb(ASN1_OP_I2D_POST, pval, it))
+                                return 0;
+                return seqlen;
+
+                default:
+                return 0;
+        }
+        return 0;
+}
+
+int ASN1_template_i2d(ASN1_VALUE **pval, unsigned char **out, const ASN1_TEMPLATE *tt)
+{
+        int i, ret, flags, aclass;
+        flags = tt->flags;
+        aclass = flags & ASN1_TFLG_TAG_CLASS;
+        if(flags & ASN1_TFLG_SK_MASK) {
+                /* SET OF, SEQUENCE OF */
+                STACK_OF(ASN1_VALUE) *sk = (STACK_OF(ASN1_VALUE) *)*pval;
+                int isset, sktag, skaclass;
+                int skcontlen, sklen;
+                ASN1_VALUE *skitem;
+                if(!*pval) return 0;
+                if(flags & ASN1_TFLG_SET_OF) {
+                        isset = 1;
+                        /* 2 means we reorder */
+                        if(flags & ASN1_TFLG_SEQUENCE_OF) isset = 2;
+                } else isset = 0;
+                /* First work out inner tag value */
+                if(flags & ASN1_TFLG_IMPTAG) {
+                        sktag = tt->tag;
+                        skaclass = aclass;
+                } else {
+                        skaclass = V_ASN1_UNIVERSAL;
+                        if(isset) sktag = V_ASN1_SET;
+                        else sktag = V_ASN1_SEQUENCE;
+                }
+                /* Now work out length of items */
+                skcontlen = 0;
+                for(i = 0; i < sk_ASN1_VALUE_num(sk); i++) {
+                        skitem = sk_ASN1_VALUE_value(sk, i);
+                        skcontlen += ASN1_item_ex_i2d(&skitem, NULL, ASN1_ITEM_ptr(tt->item), -1, 0);
+                }
+                sklen = ASN1_object_size(1, skcontlen, sktag);
+                /* If EXPLICIT need length of surrounding tag */
+                if(flags & ASN1_TFLG_EXPTAG)
+                        ret = ASN1_object_size(1, sklen, tt->tag);
+                else ret = sklen;
+
+                if(!out) return ret;
+
+                /* Now encode this lot... */
+                /* EXPLICIT tag */
+                if(flags & ASN1_TFLG_EXPTAG)
+                        ASN1_put_object(out, 1, sklen, tt->tag, aclass);
+                /* SET or SEQUENCE and IMPLICIT tag */
+                ASN1_put_object(out, 1, skcontlen, sktag, skaclass);
+                /* And finally the stuff itself */
+                asn1_set_seq_out(sk, out, skcontlen, ASN1_ITEM_ptr(tt->item), isset);
+
+                return ret;
+        }
+                        
+        if(flags & ASN1_TFLG_EXPTAG) {
+                /* EXPLICIT tagging */
+                /* Find length of tagged item */
+                i = ASN1_item_ex_i2d(pval, NULL, ASN1_ITEM_ptr(tt->item), -1, 0);
+                if(!i) return 0;
+                /* Find length of EXPLICIT tag */
+                ret = ASN1_object_size(1, i, tt->tag);
+                if(out) {
+                        /* Output tag and item */
+                        ASN1_put_object(out, 1, i, tt->tag, aclass);
+                        ASN1_item_ex_i2d(pval, out, ASN1_ITEM_ptr(tt->item), -1, 0);
+                }
+                return ret;
+        }
+        if(flags & ASN1_TFLG_IMPTAG) {
+                /* IMPLICIT tagging */
+                return ASN1_item_ex_i2d(pval, out, ASN1_ITEM_ptr(tt->item), tt->tag, aclass);
+        }
+        /* Nothing special: treat as normal */
+        return ASN1_item_ex_i2d(pval, out, ASN1_ITEM_ptr(tt->item), -1, 0);
+}
+
+/* Temporary structure used to hold DER encoding of items for SET OF */
+
+typedef struct {
+        unsigned char *data;
+        int length;
+        ASN1_VALUE *field;
+} DER_ENC;
+
+static int der_cmp(const void *a, const void *b)
+{
+        const DER_ENC *d1 = a, *d2 = b;
+        int cmplen, i;
+        cmplen = (d1->length < d2->length) ? d1->length : d2->length;
+        i = memcmp(d1->data, d2->data, cmplen);
+        if(i) return i;
+        return d1->length - d2->length;
+}
+
+/* Output the content octets of SET OF or SEQUENCE OF */
+
+static int asn1_set_seq_out(STACK_OF(ASN1_VALUE) *sk, unsigned char **out, int skcontlen, const ASN1_ITEM *item, int do_sort)
+{
+        int i;
+        ASN1_VALUE *skitem;
+        unsigned char *tmpdat = NULL, *p = NULL;
+        DER_ENC *derlst = NULL, *tder;
+        if(do_sort) {
+                /* Don't need to sort less than 2 items */
+                if(sk_ASN1_VALUE_num(sk) < 2) do_sort = 0;
+                else {
+                        derlst = OPENSSL_malloc(sk_ASN1_VALUE_num(sk) * sizeof(*derlst));
+                        tmpdat = OPENSSL_malloc(skcontlen);
+                        if(!derlst || !tmpdat) return 0;
+                }
+        }
+        /* If not sorting just output each item */
+        if(!do_sort) {
+                for(i = 0; i < sk_ASN1_VALUE_num(sk); i++) {
+                        skitem = sk_ASN1_VALUE_value(sk, i);
+                        ASN1_item_i2d(skitem, out, item);
+                }
+                return 1;
+        }
+        p = tmpdat;
+        /* Doing sort: build up a list of each member's DER encoding */
+        for(i = 0, tder = derlst; i < sk_ASN1_VALUE_num(sk); i++, tder++) {
+                skitem = sk_ASN1_VALUE_value(sk, i);
+                tder->data = p;
+                tder->length = ASN1_item_i2d(skitem, &p, item);
+                tder->field = skitem;
+        }
+        /* Now sort them */
+        qsort(derlst, sk_ASN1_VALUE_num(sk), sizeof(*derlst), der_cmp);
+        /* Output sorted DER encoding */        
+        p = *out;
+        for(i = 0, tder = derlst; i < sk_ASN1_VALUE_num(sk); i++, tder++) {
+                memcpy(p, tder->data, tder->length);
+                p += tder->length;
+        }
+        *out = p;
+        /* If do_sort is 2 then reorder the STACK */
+        if(do_sort == 2) {
+                for(i = 0, tder = derlst; i < sk_ASN1_VALUE_num(sk); i++, tder++)
+                        sk_ASN1_VALUE_set(sk, i, tder->field);
+        }
+        OPENSSL_free(derlst);
+        OPENSSL_free(tmpdat);
+        return 1;
+}
+
+static int asn1_i2d_ex_primitive(ASN1_VALUE **pval, unsigned char **out, const ASN1_ITEM *it, int tag, int aclass)
+{
+        int len;
+        int utype;
+        int usetag;
+
+        utype = it->utype;
+
+        /* Get length of content octets and maybe find
+         * out the underlying type.
+         */
+
+        len = asn1_ex_i2c(pval, NULL, &utype, it);
+
+        /* If SEQUENCE, SET or OTHER then header is
+         * included in pseudo content octets so don't
+         * include tag+length. We need to check here
+         * because the call to asn1_ex_i2c() could change
+         * utype.
+         */
+        if((utype == V_ASN1_SEQUENCE) || (utype == V_ASN1_SET) ||
+           (utype == V_ASN1_OTHER))
+                usetag = 0;
+        else usetag = 1;
+
+        /* -1 means omit type */
+
+        if(len == -1) return 0;
+
+        /* If not implicitly tagged get tag from underlying type */
+        if(tag == -1) tag = utype;
+
+        /* Output tag+length followed by content octets */
+        if(out) {
+                if(usetag) ASN1_put_object(out, 0, len, tag, aclass);
+                asn1_ex_i2c(pval, *out, &utype, it);
+                *out += len;
+        }
+
+        if(usetag) return ASN1_object_size(0, len, tag);
+        return len;
+}
+
+/* Produce content octets from a structure */
+
+int asn1_ex_i2c(ASN1_VALUE **pval, unsigned char *cout, int *putype, const ASN1_ITEM *it)
+{
+        ASN1_BOOLEAN *tbool = NULL;
+        ASN1_STRING *strtmp;
+        ASN1_OBJECT *otmp;
+        int utype;
+        unsigned char *cont, c;
+        int len;
+        const ASN1_PRIMITIVE_FUNCS *pf;
+        pf = it->funcs;
+        if(pf && pf->prim_i2c) return pf->prim_i2c(pval, cout, putype, it);
+
+        /* Should type be omitted? */
+        if((it->itype != ASN1_ITYPE_PRIMITIVE) || (it->utype != V_ASN1_BOOLEAN)) {
+                if(!*pval) return -1;
+        }
+
+        if(it->itype == ASN1_ITYPE_MSTRING) {
+                /* If MSTRING type set the underlying type */
+                strtmp = (ASN1_STRING *)*pval;
+                utype = strtmp->type;
+                *putype = utype;
+        } else if(it->utype == V_ASN1_ANY) {
+                /* If ANY set type and pointer to value */
+                ASN1_TYPE *typ;
+                typ = (ASN1_TYPE *)*pval;
+                utype = typ->type;
+                *putype = utype;
+                pval = (ASN1_VALUE **)&typ->value.ptr;
+        } else utype = *putype;
+
+        switch(utype) {
+                case V_ASN1_OBJECT:
+                otmp = (ASN1_OBJECT *)*pval;
+                cont = otmp->data;
+                len = otmp->length;
+                break;
+
+                case V_ASN1_NULL:
+                cont = NULL;
+                len = 0;
+                break;
+
+                case V_ASN1_BOOLEAN:
+                tbool = (ASN1_BOOLEAN *)pval;
+                if(*tbool == -1) return -1;
+                if (it->utype != V_ASN1_ANY)
+                        {
+                        /* Default handling if value == size field then omit */
+                        if(*tbool && (it->size > 0)) return -1;
+                        if(!*tbool && !it->size) return -1;
+                        }
+                c = (unsigned char)*tbool;
+                cont = &c;
+                len = 1;
+                break;
+
+                case V_ASN1_BIT_STRING:
+                return i2c_ASN1_BIT_STRING((ASN1_BIT_STRING *)*pval, cout ? &cout : NULL);
+                break;
+
+                case V_ASN1_INTEGER:
+                case V_ASN1_NEG_INTEGER:
+                case V_ASN1_ENUMERATED:
+                case V_ASN1_NEG_ENUMERATED:
+                /* These are all have the same content format
+                 * as ASN1_INTEGER
+                 */
+                return i2c_ASN1_INTEGER((ASN1_INTEGER *)*pval, cout ? &cout : NULL);
+                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_SEQUENCE:
+                case V_ASN1_SET:
+                default:
+                /* All based on ASN1_STRING and handled the same */
+                strtmp = (ASN1_STRING *)*pval;
+                cont = strtmp->data;
+                len = strtmp->length;
+
+                break;
+
+        }
+        if(cout && len) memcpy(cout, cont, len);
+        return len;
+}