*/
/* X509 v3 extension utilities */
-#include <stdlib.h>
-#include <pem.h>
-#include <conf.h>
-#include <err.h>
-#include "x509v3.h"
+#include <stdio.h>
+#include "cryptlib.h"
+#include <openssl/conf.h>
+#include <openssl/x509v3.h>
-static STACK *ext_list = NULL;
+#include "ext_dat.h"
-static ext_cmp(X509V3_EXT_METHOD **a, X509V3_EXT_METHOD **b);
+static STACK_OF(X509V3_EXT_METHOD) *ext_list = NULL;
+
+static int ext_cmp(const X509V3_EXT_METHOD * const *a,
+ const X509V3_EXT_METHOD * const *b);
static void ext_list_free(X509V3_EXT_METHOD *ext);
-int X509V3_EXT_add(ext)
-X509V3_EXT_METHOD *ext;
+int X509V3_EXT_add(X509V3_EXT_METHOD *ext)
{
- if(!ext_list && !(ext_list = sk_new(ext_cmp))) {
- X509V3err(X509V3_F_X509V3_ADD_EXT,ERR_R_MALLOC_FAILURE);
+ if(!ext_list && !(ext_list = sk_X509V3_EXT_METHOD_new(ext_cmp))) {
+ X509V3err(X509V3_F_X509V3_EXT_ADD,ERR_R_MALLOC_FAILURE);
return 0;
}
- if(!sk_push(ext_list, (char *)ext)) {
- X509V3err(X509V3_F_X509V3_ADD_EXT,ERR_R_MALLOC_FAILURE);
+ if(!sk_X509V3_EXT_METHOD_push(ext_list, ext)) {
+ X509V3err(X509V3_F_X509V3_EXT_ADD,ERR_R_MALLOC_FAILURE);
return 0;
}
return 1;
}
-static int ext_cmp(a, b)
-X509V3_EXT_METHOD **a, **b;
+static int ext_cmp(const X509V3_EXT_METHOD * const *a,
+ const X509V3_EXT_METHOD * const *b)
{
return ((*a)->ext_nid - (*b)->ext_nid);
}
-X509V3_EXT_METHOD *X509V3_EXT_get_nid(nid)
-int nid;
+X509V3_EXT_METHOD *X509V3_EXT_get_nid(int nid)
{
- X509V3_EXT_METHOD tmp;
+ X509V3_EXT_METHOD tmp, *t = &tmp, **ret;
int idx;
+ if(nid < 0) return NULL;
tmp.ext_nid = nid;
- if(!ext_list || (tmp.ext_nid < 0) ) return NULL;
- idx = sk_find(ext_list, (char *)&tmp);
+ ret = (X509V3_EXT_METHOD **) OBJ_bsearch((char *)&t,
+ (char *)standard_exts, STANDARD_EXTENSION_COUNT,
+ sizeof(X509V3_EXT_METHOD *), (int (*)(const void *, const void *))ext_cmp);
+ if(ret) return *ret;
+ if(!ext_list) return NULL;
+ idx = sk_X509V3_EXT_METHOD_find(ext_list, &tmp);
if(idx == -1) return NULL;
- return (X509V3_EXT_METHOD *)sk_value(ext_list, idx);
+ return sk_X509V3_EXT_METHOD_value(ext_list, idx);
}
-X509V3_EXT_METHOD *X509V3_EXT_get(ext)
-X509_EXTENSION *ext;
+X509V3_EXT_METHOD *X509V3_EXT_get(X509_EXTENSION *ext)
{
int nid;
if((nid = OBJ_obj2nid(ext->object)) == NID_undef) return NULL;
return X509V3_EXT_get_nid(nid);
}
-extern X509V3_EXT_METHOD v3_bcons, v3_nscert, v3_key_usage, v3_ext_ku, v3_ns_ia5_list[];
-int X509V3_EXT_add_list(extlist)
-X509V3_EXT_METHOD *extlist;
+int X509V3_EXT_add_list(X509V3_EXT_METHOD *extlist)
{
for(;extlist->ext_nid!=-1;extlist++)
if(!X509V3_EXT_add(extlist)) return 0;
return 1;
}
-int X509V3_EXT_add_alias(nid_to, nid_from)
-int nid_to, nid_from;
+int X509V3_EXT_add_alias(int nid_to, int nid_from)
{
X509V3_EXT_METHOD *ext, *tmpext;
if(!(ext = X509V3_EXT_get_nid(nid_from))) {
X509V3err(X509V3_F_X509V3_EXT_ADD_ALIAS,X509V3_R_EXTENSION_NOT_FOUND);
return 0;
}
- if(!(tmpext = (X509V3_EXT_METHOD *)Malloc(sizeof(X509V3_EXT_METHOD)))) {
+ if(!(tmpext = (X509V3_EXT_METHOD *)OPENSSL_malloc(sizeof(X509V3_EXT_METHOD)))) {
X509V3err(X509V3_F_X509V3_EXT_ADD_ALIAS,ERR_R_MALLOC_FAILURE);
return 0;
}
*tmpext = *ext;
tmpext->ext_nid = nid_to;
- tmpext->ext_flags = X509V3_EXT_DYNAMIC;
+ tmpext->ext_flags |= X509V3_EXT_DYNAMIC;
+ return X509V3_EXT_add(tmpext);
+}
+
+void X509V3_EXT_cleanup(void)
+{
+ sk_X509V3_EXT_METHOD_pop_free(ext_list, ext_list_free);
+ ext_list = NULL;
+}
+
+static void ext_list_free(X509V3_EXT_METHOD *ext)
+{
+ if(ext->ext_flags & X509V3_EXT_DYNAMIC) OPENSSL_free(ext);
+}
+
+/* Legacy function: we don't need to add standard extensions
+ * any more because they are now kept in ext_dat.h.
+ */
+
+int X509V3_add_standard_extensions(void)
+{
return 1;
}
-void X509V3_EXT_cleanup()
+/* Return an extension internal structure */
+
+void *X509V3_EXT_d2i(X509_EXTENSION *ext)
{
- sk_pop_free(ext_list, ext_list_free);
+ X509V3_EXT_METHOD *method;
+ const unsigned char *p;
+
+ if(!(method = X509V3_EXT_get(ext))) return NULL;
+ p = ext->value->data;
+ if(method->it) return ASN1_item_d2i(NULL, &p, ext->value->length, ASN1_ITEM_ptr(method->it));
+ return method->d2i(NULL, &p, ext->value->length);
}
-static void ext_list_free(ext)
-X509V3_EXT_METHOD *ext;
+/* Get critical flag and decoded version of extension from a NID.
+ * The "idx" variable returns the last found extension and can
+ * be used to retrieve multiple extensions of the same NID.
+ * However multiple extensions with the same NID is usually
+ * due to a badly encoded certificate so if idx is NULL we
+ * choke if multiple extensions exist.
+ * The "crit" variable is set to the critical value.
+ * The return value is the decoded extension or NULL on
+ * error. The actual error can have several different causes,
+ * the value of *crit reflects the cause:
+ * >= 0, extension found but not decoded (reflects critical value).
+ * -1 extension not found.
+ * -2 extension occurs more than once.
+ */
+
+void *X509V3_get_d2i(STACK_OF(X509_EXTENSION) *x, int nid, int *crit, int *idx)
{
- if(ext->ext_flags & X509V3_EXT_DYNAMIC) Free(ext);
+ int lastpos, i;
+ X509_EXTENSION *ex, *found_ex = NULL;
+ if(!x) {
+ if(idx) *idx = -1;
+ if(crit) *crit = -1;
+ return NULL;
+ }
+ if(idx) lastpos = *idx + 1;
+ else lastpos = 0;
+ if(lastpos < 0) lastpos = 0;
+ for(i = lastpos; i < sk_X509_EXTENSION_num(x); i++)
+ {
+ ex = sk_X509_EXTENSION_value(x, i);
+ if(OBJ_obj2nid(ex->object) == nid) {
+ if(idx) {
+ *idx = i;
+ found_ex = ex;
+ break;
+ } else if(found_ex) {
+ /* Found more than one */
+ if(crit) *crit = -2;
+ return NULL;
+ }
+ found_ex = ex;
+ }
+ }
+ if(found_ex) {
+ /* Found it */
+ if(crit) *crit = X509_EXTENSION_get_critical(found_ex);
+ return X509V3_EXT_d2i(found_ex);
+ }
+
+ /* Extension not found */
+ if(idx) *idx = -1;
+ if(crit) *crit = -1;
+ return NULL;
}
-int X509V3_add_standard_extensions()
+/* This function is a general extension append, replace and delete utility.
+ * The precise operation is governed by the 'flags' value. The 'crit' and
+ * 'value' arguments (if relevant) are the extensions internal structure.
+ */
+
+int X509V3_add1_i2d(STACK_OF(X509_EXTENSION) **x, int nid, void *value,
+ int crit, unsigned long flags)
{
- X509V3_EXT_add_list(v3_ns_ia5_list);
- X509V3_EXT_add(&v3_bcons);
- X509V3_EXT_add(&v3_nscert);
- X509V3_EXT_add(&v3_key_usage);
- X509V3_EXT_add(&v3_ext_ku);
+ int extidx = -1;
+ int errcode;
+ X509_EXTENSION *ext, *extmp;
+ unsigned long ext_op = flags & X509V3_ADD_OP_MASK;
+
+ /* If appending we don't care if it exists, otherwise
+ * look for existing extension.
+ */
+ if(ext_op != X509V3_ADD_APPEND)
+ extidx = X509v3_get_ext_by_NID(*x, nid, -1);
+
+ /* See if extension exists */
+ if(extidx >= 0) {
+ /* If keep existing, nothing to do */
+ if(ext_op == X509V3_ADD_KEEP_EXISTING)
+ return 1;
+ /* If default then its an error */
+ if(ext_op == X509V3_ADD_DEFAULT) {
+ errcode = X509V3_R_EXTENSION_EXISTS;
+ goto err;
+ }
+ /* If delete, just delete it */
+ if(ext_op == X509V3_ADD_DELETE) {
+ if(!sk_X509_EXTENSION_delete(*x, extidx)) return -1;
+ return 1;
+ }
+ } else {
+ /* If replace existing or delete, error since
+ * extension must exist
+ */
+ if((ext_op == X509V3_ADD_REPLACE_EXISTING) ||
+ (ext_op == X509V3_ADD_DELETE)) {
+ errcode = X509V3_R_EXTENSION_NOT_FOUND;
+ goto err;
+ }
+ }
+
+ /* If we get this far then we have to create an extension:
+ * could have some flags for alternative encoding schemes...
+ */
+
+ ext = X509V3_EXT_i2d(nid, crit, value);
+
+ if(!ext) {
+ X509V3err(X509V3_F_X509V3_ADD1_I2D, X509V3_R_ERROR_CREATING_EXTENSION);
+ return 0;
+ }
+
+ /* If extension exists replace it.. */
+ if(extidx >= 0) {
+ extmp = sk_X509_EXTENSION_value(*x, extidx);
+ X509_EXTENSION_free(extmp);
+ if(!sk_X509_EXTENSION_set(*x, extidx, ext)) return -1;
+ return 1;
+ }
+
+ if(!*x && !(*x = sk_X509_EXTENSION_new_null())) return -1;
+ if(!sk_X509_EXTENSION_push(*x, ext)) return -1;
+
return 1;
+
+ err:
+ if(!(flags & X509V3_ADD_SILENT))
+ X509V3err(X509V3_F_X509V3_ADD1_I2D, errcode);
+ return 0;
}
+
+IMPLEMENT_STACK_OF(X509V3_EXT_METHOD)
projects / openssl.git / blobdiff