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@ -16,16 +16,17 @@
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#include "internal/asn1_int.h"
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#include "asn1_locl.h"
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static int asn1_i2d_ex_primitive(ASN1_VALUE **pval, unsigned char **out,
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static int asn1_i2d_ex_primitive(const ASN1_VALUE **pval, unsigned char **out,
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const ASN1_ITEM *it, int tag, int aclass);
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static int asn1_set_seq_out(STACK_OF(ASN1_VALUE) *sk, unsigned char **out,
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static int asn1_set_seq_out(STACK_OF(const_ASN1_VALUE) *sk,
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unsigned char **out,
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int skcontlen, const ASN1_ITEM *item,
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int do_sort, int iclass);
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static int asn1_template_ex_i2d(ASN1_VALUE **pval, unsigned char **out,
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static int asn1_template_ex_i2d(const ASN1_VALUE **pval, unsigned char **out,
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const ASN1_TEMPLATE *tt, int tag, int aclass);
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static int asn1_item_flags_i2d(ASN1_VALUE *val, unsigned char **out,
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static int asn1_item_flags_i2d(const ASN1_VALUE *val, unsigned char **out,
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const ASN1_ITEM *it, int flags);
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static int asn1_ex_i2c(ASN1_VALUE **pval, unsigned char *cout, int *putype,
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static int asn1_ex_i2c(const ASN1_VALUE **pval, unsigned char *cout, int *putype,
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const ASN1_ITEM *it);
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/*
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@ -33,13 +34,13 @@ static int asn1_ex_i2c(ASN1_VALUE **pval, unsigned char *cout, int *putype,
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* indefinite length constructed encoding, where appropriate
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*/
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int ASN1_item_ndef_i2d(ASN1_VALUE *val, unsigned char **out,
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int ASN1_item_ndef_i2d(const ASN1_VALUE *val, unsigned char **out,
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const ASN1_ITEM *it)
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{
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return asn1_item_flags_i2d(val, out, it, ASN1_TFLG_NDEF);
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}
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int ASN1_item_i2d(ASN1_VALUE *val, unsigned char **out, const ASN1_ITEM *it)
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int ASN1_item_i2d(const ASN1_VALUE *val, unsigned char **out, const ASN1_ITEM *it)
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{
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return asn1_item_flags_i2d(val, out, it, 0);
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}
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@ -51,7 +52,7 @@ int ASN1_item_i2d(ASN1_VALUE *val, unsigned char **out, const ASN1_ITEM *it)
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* allocated and populated with the encoding.
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*/
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static int asn1_item_flags_i2d(ASN1_VALUE *val, unsigned char **out,
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static int asn1_item_flags_i2d(const ASN1_VALUE *val, unsigned char **out,
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const ASN1_ITEM *it, int flags)
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{
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if (out && !*out) {
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@ -79,20 +80,22 @@ static int asn1_item_flags_i2d(ASN1_VALUE *val, unsigned char **out,
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* performs the normal item handling: it can be used in external types.
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*/
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int ASN1_item_ex_i2d(ASN1_VALUE **pval, unsigned char **out,
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int ASN1_item_ex_i2d(const ASN1_VALUE **pval, unsigned char **out,
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const ASN1_ITEM *it, int tag, int aclass)
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{
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const ASN1_TEMPLATE *tt = NULL;
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int i, seqcontlen, seqlen, ndef = 1;
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const ASN1_EXTERN_FUNCS *ef;
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const ASN1_AUX *aux = it->funcs;
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ASN1_aux_cb *asn1_cb = 0;
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ASN1_aux_const_cb *asn1_cb = NULL;
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if ((it->itype != ASN1_ITYPE_PRIMITIVE) && !*pval)
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return 0;
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if (aux && aux->asn1_cb)
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asn1_cb = aux->asn1_cb;
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if (aux != NULL) {
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asn1_cb = ((aux->flags & ASN1_AFLG_CONST_CB) != 0) ? aux->asn1_const_cb
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: (ASN1_aux_const_cb *)aux->asn1_cb; /* backward compatibility */
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}
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switch (it->itype) {
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@ -108,12 +111,12 @@ int ASN1_item_ex_i2d(ASN1_VALUE **pval, unsigned char **out,
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case ASN1_ITYPE_CHOICE:
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if (asn1_cb && !asn1_cb(ASN1_OP_I2D_PRE, pval, it, NULL))
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return 0;
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i = asn1_get_choice_selector(pval, it);
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i = asn1_get_choice_selector_const(pval, it);
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if ((i >= 0) && (i < it->tcount)) {
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ASN1_VALUE **pchval;
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const ASN1_VALUE **pchval;
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const ASN1_TEMPLATE *chtt;
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chtt = it->templates + i;
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pchval = asn1_get_field_ptr(pval, chtt);
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pchval = asn1_get_const_field_ptr(pval, chtt);
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return asn1_template_ex_i2d(pchval, out, chtt, -1, aclass);
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}
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/* Fixme: error condition if selector out of range */
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@ -154,12 +157,12 @@ int ASN1_item_ex_i2d(ASN1_VALUE **pval, unsigned char **out,
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/* First work out sequence content length */
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for (i = 0, tt = it->templates; i < it->tcount; tt++, i++) {
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const ASN1_TEMPLATE *seqtt;
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ASN1_VALUE **pseqval;
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const ASN1_VALUE **pseqval;
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int tmplen;
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seqtt = asn1_do_adb(pval, tt, 1);
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seqtt = asn1_do_adb(*pval, tt, 1);
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if (!seqtt)
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return 0;
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pseqval = asn1_get_field_ptr(pval, seqtt);
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pseqval = asn1_get_const_field_ptr(pval, seqtt);
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tmplen = asn1_template_ex_i2d(pseqval, NULL, seqtt, -1, aclass);
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if (tmplen == -1 || (tmplen > INT_MAX - seqcontlen))
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return -1;
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@ -173,11 +176,11 @@ int ASN1_item_ex_i2d(ASN1_VALUE **pval, unsigned char **out,
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ASN1_put_object(out, ndef, seqcontlen, tag, aclass);
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for (i = 0, tt = it->templates; i < it->tcount; tt++, i++) {
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const ASN1_TEMPLATE *seqtt;
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ASN1_VALUE **pseqval;
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seqtt = asn1_do_adb(pval, tt, 1);
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const ASN1_VALUE **pseqval;
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seqtt = asn1_do_adb(*pval, tt, 1);
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if (!seqtt)
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return 0;
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pseqval = asn1_get_field_ptr(pval, seqtt);
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pseqval = asn1_get_const_field_ptr(pval, seqtt);
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/* FIXME: check for errors in enhanced version */
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asn1_template_ex_i2d(pseqval, out, seqtt, -1, aclass);
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}
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@ -194,11 +197,11 @@ int ASN1_item_ex_i2d(ASN1_VALUE **pval, unsigned char **out,
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return 0;
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}
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static int asn1_template_ex_i2d(ASN1_VALUE **pval, unsigned char **out,
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static int asn1_template_ex_i2d(const ASN1_VALUE **pval, unsigned char **out,
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const ASN1_TEMPLATE *tt, int tag, int iclass)
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{
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int i, ret, flags, ttag, tclass, ndef;
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ASN1_VALUE *tval;
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const ASN1_VALUE *tval;
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flags = tt->flags;
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/*
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@ -250,10 +253,10 @@ static int asn1_template_ex_i2d(ASN1_VALUE **pval, unsigned char **out,
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if (flags & ASN1_TFLG_SK_MASK) {
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/* SET OF, SEQUENCE OF */
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STACK_OF(ASN1_VALUE) *sk = (STACK_OF(ASN1_VALUE) *)*pval;
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STACK_OF(const_ASN1_VALUE) *sk = (STACK_OF(const_ASN1_VALUE) *)*pval;
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int isset, sktag, skaclass;
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int skcontlen, sklen;
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ASN1_VALUE *skitem;
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const ASN1_VALUE *skitem;
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if (!*pval)
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return 0;
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@ -283,9 +286,9 @@ static int asn1_template_ex_i2d(ASN1_VALUE **pval, unsigned char **out,
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/* Determine total length of items */
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skcontlen = 0;
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for (i = 0; i < sk_ASN1_VALUE_num(sk); i++) {
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for (i = 0; i < sk_const_ASN1_VALUE_num(sk); i++) {
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int tmplen;
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skitem = sk_ASN1_VALUE_value(sk, i);
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skitem = sk_const_ASN1_VALUE_value(sk, i);
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tmplen = ASN1_item_ex_i2d(&skitem, NULL, ASN1_ITEM_ptr(tt->item),
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-1, iclass);
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if (tmplen == -1 || (skcontlen > INT_MAX - tmplen))
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@ -351,7 +354,7 @@ static int asn1_template_ex_i2d(ASN1_VALUE **pval, unsigned char **out,
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typedef struct {
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unsigned char *data;
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int length;
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ASN1_VALUE *field;
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const ASN1_VALUE *field;
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} DER_ENC;
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static int der_cmp(const void *a, const void *b)
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@ -367,20 +370,21 @@ static int der_cmp(const void *a, const void *b)
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/* Output the content octets of SET OF or SEQUENCE OF */
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static int asn1_set_seq_out(STACK_OF(ASN1_VALUE) *sk, unsigned char **out,
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static int asn1_set_seq_out(STACK_OF(const_ASN1_VALUE) *sk,
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unsigned char **out,
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int skcontlen, const ASN1_ITEM *item,
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int do_sort, int iclass)
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{
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int i;
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ASN1_VALUE *skitem;
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const ASN1_VALUE *skitem;
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unsigned char *tmpdat = NULL, *p = NULL;
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DER_ENC *derlst = NULL, *tder;
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if (do_sort) {
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/* Don't need to sort less than 2 items */
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if (sk_ASN1_VALUE_num(sk) < 2)
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if (sk_const_ASN1_VALUE_num(sk) < 2)
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do_sort = 0;
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else {
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derlst = OPENSSL_malloc(sk_ASN1_VALUE_num(sk)
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derlst = OPENSSL_malloc(sk_const_ASN1_VALUE_num(sk)
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* sizeof(*derlst));
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if (derlst == NULL)
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return 0;
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@ -393,8 +397,8 @@ static int asn1_set_seq_out(STACK_OF(ASN1_VALUE) *sk, unsigned char **out,
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}
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/* If not sorting just output each item */
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if (!do_sort) {
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for (i = 0; i < sk_ASN1_VALUE_num(sk); i++) {
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skitem = sk_ASN1_VALUE_value(sk, i);
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for (i = 0; i < sk_const_ASN1_VALUE_num(sk); i++) {
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skitem = sk_const_ASN1_VALUE_value(sk, i);
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ASN1_item_ex_i2d(&skitem, out, item, -1, iclass);
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}
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return 1;
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@ -402,33 +406,33 @@ static int asn1_set_seq_out(STACK_OF(ASN1_VALUE) *sk, unsigned char **out,
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p = tmpdat;
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/* Doing sort: build up a list of each member's DER encoding */
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for (i = 0, tder = derlst; i < sk_ASN1_VALUE_num(sk); i++, tder++) {
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skitem = sk_ASN1_VALUE_value(sk, i);
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for (i = 0, tder = derlst; i < sk_const_ASN1_VALUE_num(sk); i++, tder++) {
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skitem = sk_const_ASN1_VALUE_value(sk, i);
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tder->data = p;
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tder->length = ASN1_item_ex_i2d(&skitem, &p, item, -1, iclass);
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tder->field = skitem;
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}
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/* Now sort them */
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qsort(derlst, sk_ASN1_VALUE_num(sk), sizeof(*derlst), der_cmp);
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qsort(derlst, sk_const_ASN1_VALUE_num(sk), sizeof(*derlst), der_cmp);
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/* Output sorted DER encoding */
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p = *out;
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for (i = 0, tder = derlst; i < sk_ASN1_VALUE_num(sk); i++, tder++) {
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for (i = 0, tder = derlst; i < sk_const_ASN1_VALUE_num(sk); i++, tder++) {
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memcpy(p, tder->data, tder->length);
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p += tder->length;
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}
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*out = p;
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/* If do_sort is 2 then reorder the STACK */
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if (do_sort == 2) {
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for (i = 0, tder = derlst; i < sk_ASN1_VALUE_num(sk); i++, tder++)
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(void)sk_ASN1_VALUE_set(sk, i, tder->field);
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for (i = 0, tder = derlst; i < sk_const_ASN1_VALUE_num(sk); i++, tder++)
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(void)sk_const_ASN1_VALUE_set(sk, i, tder->field);
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}
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OPENSSL_free(derlst);
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OPENSSL_free(tmpdat);
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return 1;
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}
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static int asn1_i2d_ex_primitive(ASN1_VALUE **pval, unsigned char **out,
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static int asn1_i2d_ex_primitive(const ASN1_VALUE **pval, unsigned char **out,
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const ASN1_ITEM *it, int tag, int aclass)
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{
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int len;
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@ -488,7 +492,7 @@ static int asn1_i2d_ex_primitive(ASN1_VALUE **pval, unsigned char **out,
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/* Produce content octets from a structure */
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static int asn1_ex_i2c(ASN1_VALUE **pval, unsigned char *cout, int *putype,
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static int asn1_ex_i2c(const ASN1_VALUE **pval, unsigned char *cout, int *putype,
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const ASN1_ITEM *it)
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{
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ASN1_BOOLEAN *tbool = NULL;
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@ -521,7 +525,7 @@ static int asn1_ex_i2c(ASN1_VALUE **pval, unsigned char *cout, int *putype,
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typ = (ASN1_TYPE *)*pval;
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utype = typ->type;
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*putype = utype;
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pval = &typ->value.asn1_value;
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pval = (const ASN1_VALUE **)&typ->value.asn1_value; /* actually is const */
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} else
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utype = *putype;
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