-/* tasn_utl.c */
-/* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
- * project 2000.
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 2000.
*/
/* ====================================================================
* Copyright (c) 2000-2004 The OpenSSL Project. All rights reserved.
* are met:
*
* 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
+ * 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
*
*/
-
#include <stddef.h>
#include <string.h>
+#include <internal/cryptlib.h>
#include <openssl/asn1.h>
#include <openssl/asn1t.h>
#include <openssl/objects.h>
#include <openssl/err.h>
+#include "asn1_locl.h"
/* Utility functions for manipulating fields and offsets */
/* Add 'offset' to 'addr' */
#define offset2ptr(addr, offset) (void *)(((char *) addr) + offset)
-/* Given an ASN1_ITEM CHOICE type return
- * the selector value
+/*
+ * Given an ASN1_ITEM CHOICE type return the selector value
*/
int asn1_get_choice_selector(ASN1_VALUE **pval, const ASN1_ITEM *it)
- {
- int *sel = offset2ptr(*pval, it->utype);
- return *sel;
- }
+{
+ int *sel = offset2ptr(*pval, it->utype);
+ return *sel;
+}
-/* Given an ASN1_ITEM CHOICE type set
- * the selector value, return old value.
+/*
+ * Given an ASN1_ITEM CHOICE type set the selector value, return old value.
*/
-int asn1_set_choice_selector(ASN1_VALUE **pval, int value, const ASN1_ITEM *it)
- {
- int *sel, ret;
- sel = offset2ptr(*pval, it->utype);
- ret = *sel;
- *sel = value;
- return ret;
- }
+int asn1_set_choice_selector(ASN1_VALUE **pval, int value,
+ const ASN1_ITEM *it)
+{
+ int *sel, ret;
+ sel = offset2ptr(*pval, it->utype);
+ ret = *sel;
+ *sel = value;
+ return ret;
+}
-/* Do reference counting. The value 'op' decides what to do.
- * if it is +1 then the count is incremented. If op is 0 count is
- * set to 1. If op is -1 count is decremented and the return value
- * is the current refrence count or 0 if no reference count exists.
+/*
+ * Do reference counting. The value 'op' decides what to do. if it is +1
+ * then the count is incremented. If op is 0 count is set to 1. If op is -1
+ * count is decremented and the return value is the current reference count
+ * or 0 if no reference count exists.
*/
int asn1_do_lock(ASN1_VALUE **pval, int op, const ASN1_ITEM *it)
- {
- const ASN1_AUX *aux;
- int *lck, ret;
- if ((it->itype != ASN1_ITYPE_SEQUENCE)
- && (it->itype != ASN1_ITYPE_NDEF_SEQUENCE))
- return 0;
- aux = it->funcs;
- if (!aux || !(aux->flags & ASN1_AFLG_REFCOUNT))
- return 0;
- lck = offset2ptr(*pval, aux->ref_offset);
- if (op == 0)
- {
- *lck = 1;
- return 1;
- }
- ret = CRYPTO_add(lck, op, aux->ref_lock);
+{
+ const ASN1_AUX *aux;
+ int *lck, ret;
+ CRYPTO_RWLOCK **lock;
+ if ((it->itype != ASN1_ITYPE_SEQUENCE)
+ && (it->itype != ASN1_ITYPE_NDEF_SEQUENCE))
+ return 0;
+ aux = it->funcs;
+ if (!aux || !(aux->flags & ASN1_AFLG_REFCOUNT))
+ return 0;
+ lck = offset2ptr(*pval, aux->ref_offset);
+ lock = offset2ptr(*pval, aux->ref_lock);
+ if (op == 0) {
+ *lck = 1;
+ *lock = CRYPTO_THREAD_lock_new();
+ if (*lock == NULL)
+ return 0;
+ return 1;
+ }
+ CRYPTO_atomic_add(lck, op, &ret, *lock);
#ifdef REF_PRINT
- fprintf(stderr, "%s: Reference Count: %d\n", it->sname, *lck);
-#endif
-#ifdef REF_CHECK
- if (ret < 0)
- fprintf(stderr, "%s, bad reference count\n", it->sname);
+ fprintf(stderr, "%p:%4d:%s\n", it, *lck, it->sname);
#endif
- return ret;
- }
+ REF_ASSERT_ISNT(ret < 0);
+ if (ret == 0)
+ CRYPTO_THREAD_lock_free(*lock);
+ return ret;
+}
static ASN1_ENCODING *asn1_get_enc_ptr(ASN1_VALUE **pval, const ASN1_ITEM *it)
- {
- const ASN1_AUX *aux;
- if (!pval || !*pval)
- return NULL;
- aux = it->funcs;
- if (!aux || !(aux->flags & ASN1_AFLG_ENCODING))
- return NULL;
- return offset2ptr(*pval, aux->enc_offset);
- }
+{
+ const ASN1_AUX *aux;
+ if (!pval || !*pval)
+ return NULL;
+ aux = it->funcs;
+ if (!aux || !(aux->flags & ASN1_AFLG_ENCODING))
+ return NULL;
+ return offset2ptr(*pval, aux->enc_offset);
+}
void asn1_enc_init(ASN1_VALUE **pval, const ASN1_ITEM *it)
- {
- ASN1_ENCODING *enc;
- enc = asn1_get_enc_ptr(pval, it);
- if (enc)
- {
- enc->enc = NULL;
- enc->len = 0;
- enc->modified = 1;
- }
- }
+{
+ ASN1_ENCODING *enc;
+ enc = asn1_get_enc_ptr(pval, it);
+ if (enc) {
+ enc->enc = NULL;
+ enc->len = 0;
+ enc->modified = 1;
+ }
+}
void asn1_enc_free(ASN1_VALUE **pval, const ASN1_ITEM *it)
- {
- ASN1_ENCODING *enc;
- enc = asn1_get_enc_ptr(pval, it);
- if (enc)
- {
- if (enc->enc)
- OPENSSL_free(enc->enc);
- enc->enc = NULL;
- enc->len = 0;
- enc->modified = 1;
- }
- }
+{
+ ASN1_ENCODING *enc;
+ enc = asn1_get_enc_ptr(pval, it);
+ if (enc) {
+ OPENSSL_free(enc->enc);
+ enc->enc = NULL;
+ enc->len = 0;
+ enc->modified = 1;
+ }
+}
int asn1_enc_save(ASN1_VALUE **pval, const unsigned char *in, int inlen,
- const ASN1_ITEM *it)
- {
- ASN1_ENCODING *enc;
- enc = asn1_get_enc_ptr(pval, it);
- if (!enc)
- return 1;
+ const ASN1_ITEM *it)
+{
+ ASN1_ENCODING *enc;
+ enc = asn1_get_enc_ptr(pval, it);
+ if (!enc)
+ return 1;
+
+ OPENSSL_free(enc->enc);
+ enc->enc = OPENSSL_malloc(inlen);
+ if (enc->enc == NULL)
+ return 0;
+ memcpy(enc->enc, in, inlen);
+ enc->len = inlen;
+ enc->modified = 0;
- if (enc->enc)
- OPENSSL_free(enc->enc);
- enc->enc = OPENSSL_malloc(inlen);
- if (!enc->enc)
- return 0;
- memcpy(enc->enc, in, inlen);
- enc->len = inlen;
- enc->modified = 0;
+ return 1;
+}
- return 1;
- }
-
int asn1_enc_restore(int *len, unsigned char **out, ASN1_VALUE **pval,
- const ASN1_ITEM *it)
- {
- ASN1_ENCODING *enc;
- enc = asn1_get_enc_ptr(pval, it);
- if (!enc || enc->modified)
- return 0;
- if (out)
- {
- memcpy(*out, enc->enc, enc->len);
- *out += enc->len;
- }
- if (len)
- *len = enc->len;
- return 1;
- }
+ const ASN1_ITEM *it)
+{
+ ASN1_ENCODING *enc;
+ enc = asn1_get_enc_ptr(pval, it);
+ if (!enc || enc->modified)
+ return 0;
+ if (out) {
+ memcpy(*out, enc->enc, enc->len);
+ *out += enc->len;
+ }
+ if (len)
+ *len = enc->len;
+ return 1;
+}
/* Given an ASN1_TEMPLATE get a pointer to a field */
-ASN1_VALUE ** asn1_get_field_ptr(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt)
- {
- ASN1_VALUE **pvaltmp;
- if (tt->flags & ASN1_TFLG_COMBINE)
- return pval;
- pvaltmp = offset2ptr(*pval, tt->offset);
- /* NOTE for BOOLEAN types the field is just a plain
- * int so we can't return int **, so settle for
- * (int *).
- */
- return pvaltmp;
- }
+ASN1_VALUE **asn1_get_field_ptr(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt)
+{
+ ASN1_VALUE **pvaltmp;
+ pvaltmp = offset2ptr(*pval, tt->offset);
+ /*
+ * NOTE for BOOLEAN types the field is just a plain int so we can't
+ * return int **, so settle for (int *).
+ */
+ return pvaltmp;
+}
-/* Handle ANY DEFINED BY template, find the selector, look up
- * the relevant ASN1_TEMPLATE in the table and return it.
+/*
+ * Handle ANY DEFINED BY template, find the selector, look up the relevant
+ * ASN1_TEMPLATE in the table and return it.
*/
const ASN1_TEMPLATE *asn1_do_adb(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt,
- int nullerr)
- {
- const ASN1_ADB *adb;
- const ASN1_ADB_TABLE *atbl;
- long selector;
- ASN1_VALUE **sfld;
- int i;
- if (!(tt->flags & ASN1_TFLG_ADB_MASK))
- return tt;
+ int nullerr)
+{
+ const ASN1_ADB *adb;
+ const ASN1_ADB_TABLE *atbl;
+ long selector;
+ ASN1_VALUE **sfld;
+ int i;
+ if (!(tt->flags & ASN1_TFLG_ADB_MASK))
+ return tt;
+
+ /* Else ANY DEFINED BY ... get the table */
+ adb = ASN1_ADB_ptr(tt->item);
+
+ /* Get the selector field */
+ sfld = offset2ptr(*pval, adb->offset);
- /* Else ANY DEFINED BY ... get the table */
- adb = ASN1_ADB_ptr(tt->item);
+ /* Check if NULL */
+ if (!sfld) {
+ if (!adb->null_tt)
+ goto err;
+ return adb->null_tt;
+ }
- /* Get the selector field */
- sfld = offset2ptr(*pval, adb->offset);
+ /*
+ * Convert type to a long: NB: don't check for NID_undef here because it
+ * might be a legitimate value in the table
+ */
+ if (tt->flags & ASN1_TFLG_ADB_OID)
+ selector = OBJ_obj2nid((ASN1_OBJECT *)*sfld);
+ else
+ selector = ASN1_INTEGER_get((ASN1_INTEGER *)*sfld);
- /* Check if NULL */
- if (!sfld)
- {
- if (!adb->null_tt)
- goto err;
- return adb->null_tt;
- }
+ /* Let application callback translate value */
+ if (adb->adb_cb != NULL && adb->adb_cb(&selector) == 0) {
+ ASN1err(ASN1_F_ASN1_DO_ADB, ASN1_R_UNSUPPORTED_ANY_DEFINED_BY_TYPE);
+ return NULL;
+ }
- /* Convert type to a long:
- * NB: don't check for NID_undef here because it
- * might be a legitimate value in the table
- */
- if (tt->flags & ASN1_TFLG_ADB_OID)
- selector = OBJ_obj2nid((ASN1_OBJECT *)*sfld);
- else
- selector = ASN1_INTEGER_get((ASN1_INTEGER *)*sfld);
+ /*
+ * Try to find matching entry in table Maybe should check application
+ * types first to allow application override? Might also be useful to
+ * have a flag which indicates table is sorted and we can do a binary
+ * search. For now stick to a linear search.
+ */
- /* Try to find matching entry in table
- * Maybe should check application types first to
- * allow application override? Might also be useful
- * to have a flag which indicates table is sorted and
- * we can do a binary search. For now stick to a
- * linear search.
- */
+ for (atbl = adb->tbl, i = 0; i < adb->tblcount; i++, atbl++)
+ if (atbl->value == selector)
+ return &atbl->tt;
- for (atbl = adb->tbl, i = 0; i < adb->tblcount; i++, atbl++)
- if (atbl->value == selector)
- return &atbl->tt;
+ /* FIXME: need to search application table too */
- /* FIXME: need to search application table too */
+ /* No match, return default type */
+ if (!adb->default_tt)
+ goto err;
+ return adb->default_tt;
- /* No match, return default type */
- if (!adb->default_tt)
- goto err;
- return adb->default_tt;
-
- err:
- /* FIXME: should log the value or OID of unsupported type */
- if (nullerr)
- ASN1err(ASN1_F_ASN1_DO_ADB,
- ASN1_R_UNSUPPORTED_ANY_DEFINED_BY_TYPE);
- return NULL;
- }
+ err:
+ /* FIXME: should log the value or OID of unsupported type */
+ if (nullerr)
+ ASN1err(ASN1_F_ASN1_DO_ADB, ASN1_R_UNSUPPORTED_ANY_DEFINED_BY_TYPE);
+ return NULL;
+}
projects / openssl.git / blobdiff