subversion-1.9.7HEADsubversion-1.9.7master

1 files changed, 332 insertions, 0 deletions

diff --git a/subversion/libsvn_subr/x509info.c b/subversion/libsvn_subr/x509info.c
new file mode 100644
index 0000000..3514596
--- /dev/null
+++ b/subversion/libsvn_subr/x509info.c
@@ -0,0 +1,332 @@
+/*
+ * x509info.c:  Accessors for svn_x509_certinfo_t
+ *
+ * ====================================================================
+ *    Licensed to the Apache Software Foundation (ASF) under one
+ *    or more contributor license agreements.  See the NOTICE file
+ *    distributed with this work for additional information
+ *    regarding copyright ownership.  The ASF licenses this file
+ *    to you under the Apache License, Version 2.0 (the
+ *    "License"); you may not use this file except in compliance
+ *    with the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    Unless required by applicable law or agreed to in writing,
+ *    software distributed under the License is distributed on an
+ *    "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ *    KIND, either express or implied.  See the License for the
+ *    specific language governing permissions and limitations
+ *    under the License.
+ * ====================================================================
+ */
+
+
+
+#include <string.h>
+
+#include <apr_pools.h>
+#include <apr_tables.h>
+
+#include "svn_string.h"
+#include "svn_hash.h"
+#include "x509.h"
+
+
+
+svn_x509_name_attr_t *
+svn_x509_name_attr_dup(const svn_x509_name_attr_t *attr,
+                       apr_pool_t *result_pool,
+                       apr_pool_t *scratch_pool)
+{
+  svn_x509_name_attr_t *result = apr_palloc(result_pool, sizeof(*result));
+  result->oid_len = attr->oid_len;
+  result->oid = apr_palloc(result_pool, result->oid_len);
+  memcpy(result->oid, attr->oid, result->oid_len);
+  result->utf8_value = apr_pstrdup(result_pool, attr->utf8_value);
+
+  return result;
+}
+
+const unsigned char *
+svn_x509_name_attr_get_oid(const svn_x509_name_attr_t *attr, apr_size_t *len)
+{
+  *len = attr->oid_len;
+  return attr->oid;
+}
+
+const char *
+svn_x509_name_attr_get_value(const svn_x509_name_attr_t *attr)
+{
+  return attr->utf8_value;
+}
+
+/* Array elements are assumed to be nul-terminated C strings. */
+static apr_array_header_t *
+deep_copy_array(apr_array_header_t *s, apr_pool_t *result_pool)
+{
+  int i;
+  apr_array_header_t *d;
+
+  if (!s)
+    return NULL;
+
+  d = apr_array_copy(result_pool, s);
+
+  /* Make a deep copy of the strings in the array. */
+  for (i = 0; i < s->nelts; ++i)
+    {
+      APR_ARRAY_IDX(d, i, const char *) =
+        apr_pstrdup(result_pool, APR_ARRAY_IDX(s, i, const char *));
+    }
+
+  return d;
+}
+
+/* Copy an array with elements that are svn_x509_name_attr_t's */
+static apr_array_header_t *
+deep_copy_name_attrs(apr_array_header_t *s, apr_pool_t *result_pool)
+{
+  int i;
+  apr_array_header_t *d;
+
+  if (!s)
+    return NULL;
+
+  d = apr_array_copy(result_pool, s);
+
+  /* Make a deep copy of the svn_x509_name_attr_t's in the array. */
+  for (i = 0; i < s->nelts; ++i)
+    {
+      APR_ARRAY_IDX(d, i, const svn_x509_name_attr_t *) =
+        svn_x509_name_attr_dup(APR_ARRAY_IDX(s, i, svn_x509_name_attr_t *),
+                               result_pool, result_pool);
+    }
+
+  return d;
+}
+
+svn_x509_certinfo_t *
+svn_x509_certinfo_dup(const svn_x509_certinfo_t *certinfo,
+                      apr_pool_t *result_pool,
+                      apr_pool_t *scratch_pool)
+{
+  svn_x509_certinfo_t *result = apr_palloc(result_pool, sizeof(*result));
+  result->subject = deep_copy_name_attrs(certinfo->subject, result_pool);
+  result->issuer = deep_copy_name_attrs(certinfo->issuer, result_pool);
+  result->valid_from = certinfo->valid_from;
+  result->valid_to = certinfo->valid_to;
+  result->digest = svn_checksum_dup(certinfo->digest, result_pool);
+  result->hostnames = deep_copy_array(certinfo->hostnames, result_pool);
+
+  return result;
+}
+
+typedef struct asn1_oid {
+  const unsigned char *oid;
+  const ptrdiff_t oid_len;
+  const char *short_label;
+  const char *long_label;
+} asn1_oid;
+
+#define CONSTANT_PAIR(c) (unsigned char *)(c), sizeof((c)) - 1
+
+static const asn1_oid asn1_oids[] = {
+  { CONSTANT_PAIR(SVN_X509_OID_COMMON_NAME),  "CN", "commonName" },
+  { CONSTANT_PAIR(SVN_X509_OID_COUNTRY),      "C",  "countryName" },
+  { CONSTANT_PAIR(SVN_X509_OID_LOCALITY),     "L",  "localityName" },
+  { CONSTANT_PAIR(SVN_X509_OID_STATE),        "ST", "stateOrProvinceName" },
+  { CONSTANT_PAIR(SVN_X509_OID_ORGANIZATION), "O",  "organizationName" },
+  { CONSTANT_PAIR(SVN_X509_OID_ORG_UNIT),     "OU", "organizationalUnitName"},
+  { CONSTANT_PAIR(SVN_X509_OID_EMAIL),        NULL, "emailAddress" },
+  { NULL },
+};
+
+/* Given an OID return a null-terminated C string representation.
+ * For example an OID with the bytes "\x2A\x86\x48\x86\xF7\x0D\x01\x09\x01"
+ * would be converted to the string "1.2.840.113549.1.9.1". */
+const char *
+svn_x509_oid_to_string(const unsigned char *oid, apr_size_t oid_len,
+                       apr_pool_t *scratch_pool, apr_pool_t *result_pool)
+{
+  svn_stringbuf_t *out = svn_stringbuf_create_empty(result_pool);
+  const unsigned char *p = oid;
+  const unsigned char *end = p + oid_len;
+  const char *temp;
+
+  while (p != end) {
+    if (p == oid)
+      {
+        /* Handle decoding the first two values of the OID.  These values
+         * are encoded by taking the first value and adding 40 to it and
+         * adding the result to the second value, then placing this single
+         * value in the first byte of the output.  This is unambiguous since
+         * the first value is apparently limited to 0, 1 or 2 and the second
+         * is limited to 0 to 39. */
+        temp = apr_psprintf(scratch_pool, "%d.%d", *p / 40, *p % 40);
+        p++;
+      }
+    else if (*p < 128)
+      {
+        /* The remaining values if they're less than 128 are just
+         * the number one to one encoded */
+        temp = apr_psprintf(scratch_pool, ".%d", *p);
+        p++;
+      }
+    else
+      {
+        /* Values greater than 128 are encoded as a series of 7 bit values
+         * with the left most bit set to indicate this encoding with the
+         * last octet missing the left most bit to finish out the series.. */
+        unsigned int collector = 0;
+        svn_boolean_t dot = FALSE;
+
+        do {
+          if (collector == 0 && *p == 0x80)
+            {
+              /* include leading zeros in the string representation
+                 technically not legal, but this seems nicer than just
+                 returning NULL */
+              if (!dot)
+                {
+                  svn_stringbuf_appendbyte(out, '.');
+                  dot = TRUE;
+                }
+              svn_stringbuf_appendbyte(out, '0');
+            }
+          else if (collector > UINT_MAX >> 7)
+            {
+              /* overflow */
+              return NULL;
+            }
+          collector = collector << 7 | (*(p++) & 0x7f);
+        } while (p != end && *p > 127);
+        if (collector > UINT_MAX >> 7)
+          return NULL; /* overflow */
+        collector = collector << 7 | *(p++);
+        temp = apr_psprintf(scratch_pool, "%s%d", dot ? "" : ".", collector);
+      }
+    svn_stringbuf_appendcstr(out, temp);
+  }
+
+  if (svn_stringbuf_isempty(out))
+    return NULL;
+
+  return out->data;
+}
+
+static const asn1_oid *oid_to_asn1_oid(unsigned char *oid, apr_size_t oid_len)
+{
+  const asn1_oid *entry;
+
+  for (entry = asn1_oids; entry->oid; entry++)
+    {
+      if (oid_len == entry->oid_len &&
+          memcmp(oid, entry->oid, oid_len) == 0)
+        return entry;
+    }
+
+  return NULL;
+}
+
+static const char *oid_to_best_label(unsigned char *oid, apr_size_t oid_len,
+                                     apr_pool_t *result_pool)
+{
+  const asn1_oid *entry = oid_to_asn1_oid(oid, oid_len);
+
+  if (entry)
+    {
+      if (entry->short_label)
+        return entry->short_label;
+
+      if (entry->long_label)
+        return entry->long_label;
+    }
+  else
+    {
+      const char *oid_string = svn_x509_oid_to_string(oid, oid_len,
+                                                      result_pool, result_pool);
+      if (oid_string)
+        return oid_string;
+    }
+
+  return "??";
+}
+
+/*
+ * Store the name from dn in printable form into buf,
+ * using scratch_pool for any temporary allocations.
+ * If CN is not NULL, return any common name in CN
+ */
+static const char *
+get_dn(apr_array_header_t *name,
+       apr_pool_t *result_pool)
+{
+  svn_stringbuf_t *buf = svn_stringbuf_create_empty(result_pool);
+  int n;
+
+  for (n = 0; n < name->nelts; n++)
+    {
+      const svn_x509_name_attr_t *attr = APR_ARRAY_IDX(name, n, svn_x509_name_attr_t *);
+
+      if (n > 0)
+        svn_stringbuf_appendcstr(buf, ", ");
+
+      svn_stringbuf_appendcstr(buf, oid_to_best_label(attr->oid, attr->oid_len, result_pool));
+      svn_stringbuf_appendbyte(buf, '=');
+      svn_stringbuf_appendcstr(buf, attr->utf8_value);
+    }
+
+  return buf->data;
+}
+
+const char *
+svn_x509_certinfo_get_subject(const svn_x509_certinfo_t *certinfo,
+                              apr_pool_t *result_pool)
+{
+  return get_dn(certinfo->subject, result_pool);
+}
+
+const apr_array_header_t *
+svn_x509_certinfo_get_subject_attrs(const svn_x509_certinfo_t *certinfo)
+{
+  return certinfo->subject;
+}
+
+const char *
+svn_x509_certinfo_get_issuer(const svn_x509_certinfo_t *certinfo,
+                             apr_pool_t *result_pool)
+{
+  return get_dn(certinfo->issuer, result_pool);
+}
+
+const apr_array_header_t *
+svn_x509_certinfo_get_issuer_attrs(const svn_x509_certinfo_t *certinfo)
+{
+  return certinfo->issuer;
+}
+
+apr_time_t
+svn_x509_certinfo_get_valid_from(const svn_x509_certinfo_t *certinfo)
+{
+  return certinfo->valid_from;
+}
+
+const apr_time_t
+svn_x509_certinfo_get_valid_to(const svn_x509_certinfo_t *certinfo)
+{
+  return certinfo->valid_to;
+}
+
+const svn_checksum_t *
+svn_x509_certinfo_get_digest(const svn_x509_certinfo_t *certinfo)
+{
+  return certinfo->digest;
+}
+
+const apr_array_header_t *
+svn_x509_certinfo_get_hostnames(const svn_x509_certinfo_t *certinfo)
+{
+  return certinfo->hostnames;
+}
+