crypto/asn1/tasn_enc.c

67 static int asn1_i2d_ex_primitive(ASN1_VALUE **pval, unsigned char **out,
70 static int asn1_set_seq_out(STACK_OF(ASN1_VALUE) *sk, unsigned char **out,
73 static int asn1_template_ex_i2d(ASN1_VALUE **pval, unsigned char **out,
76 static int asn1_item_flags_i2d(ASN1_VALUE *val, unsigned char **out,
83 int ASN1_item_ndef_i2d(ASN1_VALUE *val, unsigned char **out,
86 	return asn1_item_flags_i2d(val, out, it, ASN1_TFLG_NDEF);
89 int ASN1_item_i2d(ASN1_VALUE *val, unsigned char **out, const ASN1_ITEM *it)
91 	return asn1_item_flags_i2d(val, out, it, 0);
95  * standard 'i2d' function. 'out' points to
99  * buffer is NULL (i.e. *out == NULL) then a buffer is
103 static int asn1_item_flags_i2d(ASN1_VALUE *val, unsigned char **out,
106 	if (out && !*out)
118 		*out = buf;
122 	return ASN1_item_ex_i2d(&val, out, it, -1, flags);
130 int ASN1_item_ex_i2d(ASN1_VALUE **pval, unsigned char **out,
152 			return asn1_template_ex_i2d(pval, out, it->templates,
154 		return asn1_i2d_ex_primitive(pval, out, it, tag, aclass);
158 		return asn1_i2d_ex_primitive(pval, out, it, -1, aclass);
170 			return asn1_template_ex_i2d(pchval, out, chtt,
173 		/* Fixme: error condition if selector out of range */
181 		return ef->asn1_ex_i2d(pval, out, it, tag, aclass);
186 		if (out)
187 			p = *out;
188 		i = cf->asn1_i2d(*pval, out);
192 		if (out && (tag != -1))
202 		i = asn1_enc_restore(&seqcontlen, out, pval, it);
221 		/* First work out sequence content length */
236 		if (!out)
239 		ASN1_put_object(out, ndef, seqcontlen, tag, aclass);
249 			asn1_template_ex_i2d(pseqval, out, seqtt, -1, aclass);
252 			ASN1_put_eoc(out);
264 int ASN1_template_i2d(ASN1_VALUE **pval, unsigned char **out,
267 	return asn1_template_ex_i2d(pval, out, tt, -1, 0);
270 static int asn1_template_ex_i2d(ASN1_VALUE **pval, unsigned char **out,
275 	/* Work out tag and class to use: tagging may come
337 		/* Work out inner tag value: if EXPLICIT
368 		if (!out)
374 			ASN1_put_object(out, ndef, sklen, ttag, tclass);
376 		ASN1_put_object(out, ndef, skcontlen, sktag, skaclass);
378 		asn1_set_seq_out(sk, out, skcontlen, ASN1_ITEM_ptr(tt->item),
382 			ASN1_put_eoc(out);
384 				ASN1_put_eoc(out);
400 		if (out)
403 			ASN1_put_object(out, ndef, i, ttag, tclass);
404 			ASN1_item_ex_i2d(pval, out, ASN1_ITEM_ptr(tt->item),
407 				ASN1_put_eoc(out);
413 	return ASN1_item_ex_i2d(pval, out, ASN1_ITEM_ptr(tt->item),
439 static int asn1_set_seq_out(STACK_OF(ASN1_VALUE) *sk, unsigned char **out,
467 			ASN1_item_ex_i2d(&skitem, out, item, -1, iclass);
485 	p = *out;
491 	*out = p;
504 static int asn1_i2d_ex_primitive(ASN1_VALUE **pval, unsigned char **out,
515 	 * out the underlying type.
547 	if (out)
550 			ASN1_put_object(out, ndef, len, tag, aclass);
551 		asn1_ex_i2c(pval, *out, &utype, it);
553 			ASN1_put_eoc(out);
555 			*out += len;