1 files changed, 166 insertions, 0 deletions
diff --git a/src/lib/krb5/krb/bld_princ.c b/src/lib/krb5/krb/bld_princ.c
new file mode 100644
index 0000000000000..8604268ceb883
--- /dev/null
+++ b/src/lib/krb5/krb/bld_princ.c
@@ -0,0 +1,166 @@
+/* -*- mode: c; c-basic-offset: 4; indent-tabs-mode: nil -*- */
+/* lib/krb5/krb/bld_princ.c - Build a principal from a list of strings */
+/*
+ * Copyright 1991 by the Massachusetts Institute of Technology.
+ * All Rights Reserved.
+ *
+ * Export of this software from the United States of America may
+ *   require a specific license from the United States Government.
+ *   It is the responsibility of any person or organization contemplating
+ *   export to obtain such a license before exporting.
+ *
+ * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
+ * distribute this software and its documentation for any purpose and
+ * without fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright notice and
+ * this permission notice appear in supporting documentation, and that
+ * the name of M.I.T. not be used in advertising or publicity pertaining
+ * to distribution of the software without specific, written prior
+ * permission.  Furthermore if you modify this software you must label
+ * your software as modified software and not distribute it in such a
+ * fashion that it might be confused with the original M.I.T. software.
+ * M.I.T. makes no representations about the suitability of
+ * this software for any purpose.  It is provided "as is" without express
+ * or implied warranty.
+ */
+
+#include "k5-int.h"
+
+static krb5_error_code
+build_principal_va(krb5_context context, krb5_principal princ,
+                   unsigned int rlen, const char *realm, va_list ap)
+{
+    krb5_error_code retval = 0;
+    char *r = NULL;
+    krb5_data *data = NULL;
+    krb5_int32 count = 0;
+    krb5_int32 size = 2;  /* initial guess at needed space */
+    char *component = NULL;
+
+    data = malloc(size * sizeof(krb5_data));
+    if (!data) { retval = ENOMEM; }
+
+    if (!retval)
+        r = k5memdup0(realm, rlen, &retval);
+
+    while (!retval && (component = va_arg(ap, char *))) {
+        if (count == size) {
+            krb5_data *new_data = NULL;
+
+            size *= 2;
+            new_data = realloc(data, size * sizeof(krb5_data));
+            if (new_data) {
+                data = new_data;
+            } else {
+                retval = ENOMEM;
+            }
+        }
+
+        if (!retval) {
+            data[count].length = strlen(component);
+            data[count].data = strdup(component);
+            if (!data[count].data) { retval = ENOMEM; }
+            count++;
+        }
+    }
+
+    if (!retval) {
+        princ->type = KRB5_NT_UNKNOWN;
+        princ->magic = KV5M_PRINCIPAL;
+        princ->realm = make_data(r, rlen);
+        princ->data = data;
+        princ->length = count;
+        r = NULL;    /* take ownership */
+        data = NULL; /* take ownership */
+    }
+
+    if (data) {
+        while (--count >= 0) {
+            free(data[count].data);
+        }
+        free(data);
+    }
+    free(r);
+
+    return retval;
+}
+
+krb5_error_code KRB5_CALLCONV
+krb5_build_principal_va(krb5_context context,
+                        krb5_principal princ,
+                        unsigned int rlen,
+                        const char *realm,
+                        va_list ap)
+{
+    return build_principal_va(context, princ, rlen, realm, ap);
+}
+
+krb5_error_code KRB5_CALLCONV
+krb5_build_principal_alloc_va(krb5_context context,
+                              krb5_principal *princ,
+                              unsigned int rlen,
+                              const char *realm,
+                              va_list ap)
+{
+    krb5_error_code retval = 0;
+    krb5_principal p;
+
+    p = malloc(sizeof(krb5_principal_data));
+    if (p == NULL)
+        return ENOMEM;
+
+    retval = build_principal_va(context, p, rlen, realm, ap);
+    if (retval) {
+        free(p);
+        return retval;
+    }
+
+    *princ = p;
+    return 0;
+}
+
+krb5_error_code KRB5_CALLCONV_C
+krb5_build_principal(krb5_context context,
+                     krb5_principal * princ,
+                     unsigned int rlen,
+                     const char * realm, ...)
+{
+    krb5_error_code retval = 0;
+    va_list ap;
+
+    va_start(ap, realm);
+    retval = krb5_build_principal_alloc_va(context, princ, rlen, realm, ap);
+    va_end(ap);
+
+    return retval;
+}
+
+/*Anonymous and well known principals*/
+static const char anon_realm_str[] = KRB5_ANONYMOUS_REALMSTR;
+static const krb5_data anon_realm_data = {
+    KV5M_DATA, sizeof(anon_realm_str) - 1, (char *) anon_realm_str
+};
+static const char wellknown_str[] = KRB5_WELLKNOWN_NAMESTR;
+static const char anon_str[] = KRB5_ANONYMOUS_PRINCSTR;
+static const krb5_data anon_princ_data[] = {
+    { KV5M_DATA, sizeof(wellknown_str) - 1, (char *) wellknown_str },
+    { KV5M_DATA, sizeof(anon_str) - 1, (char *) anon_str }
+};
+
+const krb5_principal_data anon_princ = {
+    KV5M_PRINCIPAL,
+    { KV5M_DATA, sizeof(anon_realm_str) - 1, (char *) anon_realm_str },
+    (krb5_data *) anon_princ_data, 2, KRB5_NT_WELLKNOWN
+};
+
+const krb5_data * KRB5_CALLCONV
+krb5_anonymous_realm()
+{
+    return &anon_realm_data;
+}
+
+krb5_const_principal KRB5_CALLCONV
+krb5_anonymous_principal()
+{
+    return &anon_princ;
+}