- const ASN1_ITEM *it, int tag, int aclass)
- {
- const ASN1_TEMPLATE *tt = NULL;
- unsigned char *p = NULL;
- int i, seqcontlen, seqlen, ndef = 1;
- const ASN1_COMPAT_FUNCS *cf;
- const ASN1_EXTERN_FUNCS *ef;
- const ASN1_AUX *aux = it->funcs;
- ASN1_aux_cb *asn1_cb = 0;
-
- if ((it->itype != ASN1_ITYPE_PRIMITIVE) && !*pval)
- return 0;
-
- if (aux && aux->asn1_cb)
- asn1_cb = aux->asn1_cb;
-
- switch(it->itype)
- {
-
- case ASN1_ITYPE_PRIMITIVE:
- if (it->templates)
- return asn1_template_ex_i2d(pval, out, it->templates,
- tag, aclass);
- return asn1_i2d_ex_primitive(pval, out, it, tag, aclass);
- break;
-
- case ASN1_ITYPE_MSTRING:
- return asn1_i2d_ex_primitive(pval, out, it, -1, aclass);
-
- case ASN1_ITYPE_CHOICE:
- if (asn1_cb && !asn1_cb(ASN1_OP_I2D_PRE, pval, it, NULL))
- 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_ex_i2d(pchval, out, chtt,
- -1, aclass);
- }
- /* Fixme: error condition if selector out of range */
- if (asn1_cb && !asn1_cb(ASN1_OP_I2D_POST, pval, it, NULL))
- 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_NDEF_SEQUENCE:
- /* Use indefinite length constructed if requested */
- if (aclass & ASN1_TFLG_NDEF) ndef = 2;
- /* fall through */
-
- 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;
- /* Retain any other flags in aclass */
- aclass = (aclass & ~ASN1_TFLG_TAG_CLASS)
- | V_ASN1_UNIVERSAL;
- }
- if (asn1_cb && !asn1_cb(ASN1_OP_I2D_PRE, pval, it, NULL))
- 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 */
- seqcontlen += asn1_template_ex_i2d(pseqval, NULL, seqtt,
- -1, aclass);
- }
-
- seqlen = ASN1_object_size(ndef, seqcontlen, tag);
- if (!out)
- return seqlen;
- /* Output SEQUENCE header */
- ASN1_put_object(out, ndef, 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_ex_i2d(pseqval, out, seqtt, -1, aclass);
- }
- if (ndef == 2)
- ASN1_put_eoc(out);
- if (asn1_cb && !asn1_cb(ASN1_OP_I2D_POST, pval, it, NULL))
- return 0;
- return seqlen;
-
- default:
- return 0;
-
- }
- return 0;
- }
+ const ASN1_ITEM *it, int tag, int aclass)
+{
+ const ASN1_TEMPLATE *tt = NULL;
+ int i, seqcontlen, seqlen, ndef = 1;
+ const ASN1_EXTERN_FUNCS *ef;
+ const ASN1_AUX *aux = it->funcs;
+ ASN1_aux_cb *asn1_cb = 0;
+
+ if ((it->itype != ASN1_ITYPE_PRIMITIVE) && !*pval)
+ return 0;
+
+ if (aux && aux->asn1_cb)
+ asn1_cb = aux->asn1_cb;
+
+ switch (it->itype) {
+
+ case ASN1_ITYPE_PRIMITIVE:
+ if (it->templates)
+ return asn1_template_ex_i2d(pval, out, it->templates,
+ tag, aclass);
+ return asn1_i2d_ex_primitive(pval, out, it, tag, aclass);
+
+ case ASN1_ITYPE_MSTRING:
+ return asn1_i2d_ex_primitive(pval, out, it, -1, aclass);
+
+ case ASN1_ITYPE_CHOICE:
+ if (asn1_cb && !asn1_cb(ASN1_OP_I2D_PRE, pval, it, NULL))
+ 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_ex_i2d(pchval, out, chtt, -1, aclass);
+ }
+ /* Fixme: error condition if selector out of range */
+ if (asn1_cb && !asn1_cb(ASN1_OP_I2D_POST, pval, it, NULL))
+ 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_NDEF_SEQUENCE:
+ /* Use indefinite length constructed if requested */
+ if (aclass & ASN1_TFLG_NDEF)
+ ndef = 2;
+ /* fall through */
+
+ 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;
+ /* Retain any other flags in aclass */
+ aclass = (aclass & ~ASN1_TFLG_TAG_CLASS)
+ | V_ASN1_UNIVERSAL;
+ }
+ if (asn1_cb && !asn1_cb(ASN1_OP_I2D_PRE, pval, it, NULL))
+ 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 */
+ seqcontlen += asn1_template_ex_i2d(pseqval, NULL, seqtt,
+ -1, aclass);
+ }
+
+ seqlen = ASN1_object_size(ndef, seqcontlen, tag);
+ if (!out)
+ return seqlen;
+ /* Output SEQUENCE header */
+ ASN1_put_object(out, ndef, 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_ex_i2d(pseqval, out, seqtt, -1, aclass);
+ }
+ if (ndef == 2)
+ ASN1_put_eoc(out);
+ if (asn1_cb && !asn1_cb(ASN1_OP_I2D_POST, pval, it, NULL))
+ return 0;
+ return seqlen;
+
+ default:
+ return 0;
+
+ }
+ return 0;
+}