summaryrefslogtreecommitdiff
path: root/thirdparty/openssl/ssl/kssl.c
diff options
context:
space:
mode:
Diffstat (limited to 'thirdparty/openssl/ssl/kssl.c')
-rw-r--r--thirdparty/openssl/ssl/kssl.c2260
1 files changed, 2260 insertions, 0 deletions
diff --git a/thirdparty/openssl/ssl/kssl.c b/thirdparty/openssl/ssl/kssl.c
new file mode 100644
index 0000000000..f2839bdcd7
--- /dev/null
+++ b/thirdparty/openssl/ssl/kssl.c
@@ -0,0 +1,2260 @@
+/* ssl/kssl.c */
+/*
+ * Written by Vern Staats <staatsvr@asc.hpc.mil> for the OpenSSL project
+ * 2000.
+ */
+/* ====================================================================
+ * Copyright (c) 2000 The OpenSSL Project. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * 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
+ * the documentation and/or other materials provided with the
+ * distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ * software must display the following acknowledgment:
+ * "This product includes software developed by the OpenSSL Project
+ * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ * endorse or promote products derived from this software without
+ * prior written permission. For written permission, please contact
+ * licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ * nor may "OpenSSL" appear in their names without prior written
+ * permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ * acknowledgment:
+ * "This product includes software developed by the OpenSSL Project
+ * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com). This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+
+/*-
+ * ssl/kssl.c -- Routines to support (& debug) Kerberos5 auth for openssl
+ *
+ * 19990701 VRS Started.
+ * 200011?? Jeffrey Altman, Richard Levitte
+ * Generalized for Heimdal, Newer MIT, & Win32.
+ * Integrated into main OpenSSL 0.9.7 snapshots.
+ * 20010413 Simon Wilkinson, VRS
+ * Real RFC2712 KerberosWrapper replaces AP_REQ.
+ */
+
+#include <openssl/opensslconf.h>
+
+#include <string.h>
+
+#define KRB5_PRIVATE 1
+
+#include <openssl/ssl.h>
+#include <openssl/evp.h>
+#include <openssl/objects.h>
+#include <openssl/krb5_asn.h>
+#include "kssl_lcl.h"
+
+#ifndef OPENSSL_NO_KRB5
+
+# ifndef ENOMEM
+# define ENOMEM KRB5KRB_ERR_GENERIC
+# endif
+
+/*
+ * When OpenSSL is built on Windows, we do not want to require that
+ * the Kerberos DLLs be available in order for the OpenSSL DLLs to
+ * work. Therefore, all Kerberos routines are loaded at run time
+ * and we do not link to a .LIB file.
+ */
+
+# if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_WIN32)
+/*
+ * The purpose of the following pre-processor statements is to provide
+ * compatibility with different releases of MIT Kerberos for Windows.
+ * All versions up to 1.2 used macros. But macros do not allow for
+ * a binary compatible interface for DLLs. Therefore, all macros are
+ * being replaced by function calls. The following code will allow
+ * an OpenSSL DLL built on Windows to work whether or not the macro
+ * or function form of the routines are utilized.
+ */
+# ifdef krb5_cc_get_principal
+# define NO_DEF_KRB5_CCACHE
+# undef krb5_cc_get_principal
+# endif
+# define krb5_cc_get_principal kssl_krb5_cc_get_principal
+
+# define krb5_free_data_contents kssl_krb5_free_data_contents
+# define krb5_free_context kssl_krb5_free_context
+# define krb5_auth_con_free kssl_krb5_auth_con_free
+# define krb5_free_principal kssl_krb5_free_principal
+# define krb5_mk_req_extended kssl_krb5_mk_req_extended
+# define krb5_get_credentials kssl_krb5_get_credentials
+# define krb5_cc_default kssl_krb5_cc_default
+# define krb5_sname_to_principal kssl_krb5_sname_to_principal
+# define krb5_init_context kssl_krb5_init_context
+# define krb5_free_ticket kssl_krb5_free_ticket
+# define krb5_rd_req kssl_krb5_rd_req
+# define krb5_kt_default kssl_krb5_kt_default
+# define krb5_kt_resolve kssl_krb5_kt_resolve
+/* macros in mit 1.2.2 and earlier; functions in mit 1.2.3 and greater */
+# ifndef krb5_kt_close
+# define krb5_kt_close kssl_krb5_kt_close
+# endif /* krb5_kt_close */
+# ifndef krb5_kt_get_entry
+# define krb5_kt_get_entry kssl_krb5_kt_get_entry
+# endif /* krb5_kt_get_entry */
+# define krb5_auth_con_init kssl_krb5_auth_con_init
+
+# define krb5_principal_compare kssl_krb5_principal_compare
+# define krb5_decrypt_tkt_part kssl_krb5_decrypt_tkt_part
+# define krb5_timeofday kssl_krb5_timeofday
+# define krb5_rc_default kssl_krb5_rc_default
+
+# ifdef krb5_rc_initialize
+# undef krb5_rc_initialize
+# endif
+# define krb5_rc_initialize kssl_krb5_rc_initialize
+
+# ifdef krb5_rc_get_lifespan
+# undef krb5_rc_get_lifespan
+# endif
+# define krb5_rc_get_lifespan kssl_krb5_rc_get_lifespan
+
+# ifdef krb5_rc_destroy
+# undef krb5_rc_destroy
+# endif
+# define krb5_rc_destroy kssl_krb5_rc_destroy
+
+# define valid_cksumtype kssl_valid_cksumtype
+# define krb5_checksum_size kssl_krb5_checksum_size
+# define krb5_kt_free_entry kssl_krb5_kt_free_entry
+# define krb5_auth_con_setrcache kssl_krb5_auth_con_setrcache
+# define krb5_auth_con_getrcache kssl_krb5_auth_con_getrcache
+# define krb5_get_server_rcache kssl_krb5_get_server_rcache
+
+/* Prototypes for built in stubs */
+void kssl_krb5_free_data_contents(krb5_context, krb5_data *);
+void kssl_krb5_free_principal(krb5_context, krb5_principal);
+krb5_error_code kssl_krb5_kt_resolve(krb5_context,
+ krb5_const char *, krb5_keytab *);
+krb5_error_code kssl_krb5_kt_default(krb5_context, krb5_keytab *);
+krb5_error_code kssl_krb5_free_ticket(krb5_context, krb5_ticket *);
+krb5_error_code kssl_krb5_rd_req(krb5_context, krb5_auth_context *,
+ krb5_const krb5_data *,
+ krb5_const_principal, krb5_keytab,
+ krb5_flags *, krb5_ticket **);
+
+krb5_boolean kssl_krb5_principal_compare(krb5_context, krb5_const_principal,
+ krb5_const_principal);
+krb5_error_code kssl_krb5_mk_req_extended(krb5_context,
+ krb5_auth_context *,
+ krb5_const krb5_flags,
+ krb5_data *,
+ krb5_creds *, krb5_data *);
+krb5_error_code kssl_krb5_init_context(krb5_context *);
+void kssl_krb5_free_context(krb5_context);
+krb5_error_code kssl_krb5_cc_default(krb5_context, krb5_ccache *);
+krb5_error_code kssl_krb5_sname_to_principal(krb5_context,
+ krb5_const char *,
+ krb5_const char *,
+ krb5_int32, krb5_principal *);
+krb5_error_code kssl_krb5_get_credentials(krb5_context,
+ krb5_const krb5_flags,
+ krb5_ccache,
+ krb5_creds *, krb5_creds * *);
+krb5_error_code kssl_krb5_auth_con_init(krb5_context, krb5_auth_context *);
+krb5_error_code kssl_krb5_cc_get_principal(krb5_context context,
+ krb5_ccache cache,
+ krb5_principal *principal);
+krb5_error_code kssl_krb5_auth_con_free(krb5_context, krb5_auth_context);
+size_t kssl_krb5_checksum_size(krb5_context context, krb5_cksumtype ctype);
+krb5_boolean kssl_valid_cksumtype(krb5_cksumtype ctype);
+krb5_error_code krb5_kt_free_entry(krb5_context, krb5_keytab_entry FAR *);
+krb5_error_code kssl_krb5_auth_con_setrcache(krb5_context,
+ krb5_auth_context, krb5_rcache);
+krb5_error_code kssl_krb5_get_server_rcache(krb5_context,
+ krb5_const krb5_data *,
+ krb5_rcache *);
+krb5_error_code kssl_krb5_auth_con_getrcache(krb5_context,
+ krb5_auth_context,
+ krb5_rcache *);
+
+/* Function pointers (almost all Kerberos functions are _stdcall) */
+static void (_stdcall *p_krb5_free_data_contents) (krb5_context, krb5_data *)
+ = NULL;
+static void (_stdcall *p_krb5_free_principal) (krb5_context, krb5_principal)
+ = NULL;
+static krb5_error_code(_stdcall *p_krb5_kt_resolve)
+ (krb5_context, krb5_const char *, krb5_keytab *) = NULL;
+static krb5_error_code(_stdcall *p_krb5_kt_default) (krb5_context,
+ krb5_keytab *) = NULL;
+static krb5_error_code(_stdcall *p_krb5_free_ticket) (krb5_context,
+ krb5_ticket *) = NULL;
+static krb5_error_code(_stdcall *p_krb5_rd_req) (krb5_context,
+ krb5_auth_context *,
+ krb5_const krb5_data *,
+ krb5_const_principal,
+ krb5_keytab, krb5_flags *,
+ krb5_ticket **) = NULL;
+static krb5_error_code(_stdcall *p_krb5_mk_req_extended)
+ (krb5_context, krb5_auth_context *,
+ krb5_const krb5_flags, krb5_data *, krb5_creds *, krb5_data *) = NULL;
+static krb5_error_code(_stdcall *p_krb5_init_context) (krb5_context *) = NULL;
+static void (_stdcall *p_krb5_free_context) (krb5_context) = NULL;
+static krb5_error_code(_stdcall *p_krb5_cc_default) (krb5_context,
+ krb5_ccache *) = NULL;
+static krb5_error_code(_stdcall *p_krb5_sname_to_principal)
+ (krb5_context, krb5_const char *, krb5_const char *,
+ krb5_int32, krb5_principal *) = NULL;
+static krb5_error_code(_stdcall *p_krb5_get_credentials)
+ (krb5_context, krb5_const krb5_flags, krb5_ccache,
+ krb5_creds *, krb5_creds **) = NULL;
+static krb5_error_code(_stdcall *p_krb5_auth_con_init)
+ (krb5_context, krb5_auth_context *) = NULL;
+static krb5_error_code(_stdcall *p_krb5_cc_get_principal)
+ (krb5_context context, krb5_ccache cache, krb5_principal *principal) = NULL;
+static krb5_error_code(_stdcall *p_krb5_auth_con_free)
+ (krb5_context, krb5_auth_context) = NULL;
+static krb5_error_code(_stdcall *p_krb5_decrypt_tkt_part)
+ (krb5_context, krb5_const krb5_keyblock *, krb5_ticket *) = NULL;
+static krb5_error_code(_stdcall *p_krb5_timeofday)
+ (krb5_context context, krb5_int32 *timeret) = NULL;
+static krb5_error_code(_stdcall *p_krb5_rc_default)
+ (krb5_context context, krb5_rcache *rc) = NULL;
+static krb5_error_code(_stdcall *p_krb5_rc_initialize)
+ (krb5_context context, krb5_rcache rc, krb5_deltat lifespan) = NULL;
+static krb5_error_code(_stdcall *p_krb5_rc_get_lifespan)
+ (krb5_context context, krb5_rcache rc, krb5_deltat *lifespan) = NULL;
+static krb5_error_code(_stdcall *p_krb5_rc_destroy)
+ (krb5_context context, krb5_rcache rc) = NULL;
+static krb5_boolean(_stdcall *p_krb5_principal_compare)
+ (krb5_context, krb5_const_principal, krb5_const_principal) = NULL;
+static size_t (_stdcall *p_krb5_checksum_size) (krb5_context context,
+ krb5_cksumtype ctype) = NULL;
+static krb5_boolean(_stdcall *p_valid_cksumtype) (krb5_cksumtype ctype) =
+ NULL;
+static krb5_error_code(_stdcall *p_krb5_kt_free_entry)
+ (krb5_context, krb5_keytab_entry *) = NULL;
+static krb5_error_code(_stdcall *p_krb5_auth_con_setrcache) (krb5_context,
+ krb5_auth_context,
+ krb5_rcache) =
+ NULL;
+static krb5_error_code(_stdcall *p_krb5_get_server_rcache) (krb5_context,
+ krb5_const
+ krb5_data *,
+ krb5_rcache *) =
+ NULL;
+static krb5_error_code(*p_krb5_auth_con_getrcache) (krb5_context,
+ krb5_auth_context,
+ krb5_rcache *) = NULL;
+static krb5_error_code(_stdcall *p_krb5_kt_close) (krb5_context context,
+ krb5_keytab keytab) = NULL;
+static krb5_error_code(_stdcall *p_krb5_kt_get_entry) (krb5_context context,
+ krb5_keytab keytab,
+ krb5_const_principal
+ principal,
+ krb5_kvno vno,
+ krb5_enctype enctype,
+ krb5_keytab_entry
+ *entry) = NULL;
+static int krb5_loaded = 0; /* only attempt to initialize func ptrs once */
+
+/* Function to Load the Kerberos 5 DLL and initialize function pointers */
+void load_krb5_dll(void)
+{
+ HANDLE hKRB5_32;
+
+ krb5_loaded++;
+ hKRB5_32 = LoadLibrary(TEXT("KRB5_32"));
+ if (!hKRB5_32)
+ return;
+
+ (FARPROC) p_krb5_free_data_contents =
+ GetProcAddress(hKRB5_32, "krb5_free_data_contents");
+ (FARPROC) p_krb5_free_context =
+ GetProcAddress(hKRB5_32, "krb5_free_context");
+ (FARPROC) p_krb5_auth_con_free =
+ GetProcAddress(hKRB5_32, "krb5_auth_con_free");
+ (FARPROC) p_krb5_free_principal =
+ GetProcAddress(hKRB5_32, "krb5_free_principal");
+ (FARPROC) p_krb5_mk_req_extended =
+ GetProcAddress(hKRB5_32, "krb5_mk_req_extended");
+ (FARPROC) p_krb5_get_credentials =
+ GetProcAddress(hKRB5_32, "krb5_get_credentials");
+ (FARPROC) p_krb5_cc_get_principal =
+ GetProcAddress(hKRB5_32, "krb5_cc_get_principal");
+ (FARPROC) p_krb5_cc_default = GetProcAddress(hKRB5_32, "krb5_cc_default");
+ (FARPROC) p_krb5_sname_to_principal =
+ GetProcAddress(hKRB5_32, "krb5_sname_to_principal");
+ (FARPROC) p_krb5_init_context =
+ GetProcAddress(hKRB5_32, "krb5_init_context");
+ (FARPROC) p_krb5_free_ticket =
+ GetProcAddress(hKRB5_32, "krb5_free_ticket");
+ (FARPROC) p_krb5_rd_req = GetProcAddress(hKRB5_32, "krb5_rd_req");
+ (FARPROC) p_krb5_principal_compare =
+ GetProcAddress(hKRB5_32, "krb5_principal_compare");
+ (FARPROC) p_krb5_decrypt_tkt_part =
+ GetProcAddress(hKRB5_32, "krb5_decrypt_tkt_part");
+ (FARPROC) p_krb5_timeofday = GetProcAddress(hKRB5_32, "krb5_timeofday");
+ (FARPROC) p_krb5_rc_default = GetProcAddress(hKRB5_32, "krb5_rc_default");
+ (FARPROC) p_krb5_rc_initialize =
+ GetProcAddress(hKRB5_32, "krb5_rc_initialize");
+ (FARPROC) p_krb5_rc_get_lifespan =
+ GetProcAddress(hKRB5_32, "krb5_rc_get_lifespan");
+ (FARPROC) p_krb5_rc_destroy = GetProcAddress(hKRB5_32, "krb5_rc_destroy");
+ (FARPROC) p_krb5_kt_default = GetProcAddress(hKRB5_32, "krb5_kt_default");
+ (FARPROC) p_krb5_kt_resolve = GetProcAddress(hKRB5_32, "krb5_kt_resolve");
+ (FARPROC) p_krb5_auth_con_init =
+ GetProcAddress(hKRB5_32, "krb5_auth_con_init");
+ (FARPROC) p_valid_cksumtype = GetProcAddress(hKRB5_32, "valid_cksumtype");
+ (FARPROC) p_krb5_checksum_size =
+ GetProcAddress(hKRB5_32, "krb5_checksum_size");
+ (FARPROC) p_krb5_kt_free_entry =
+ GetProcAddress(hKRB5_32, "krb5_kt_free_entry");
+ (FARPROC) p_krb5_auth_con_setrcache =
+ GetProcAddress(hKRB5_32, "krb5_auth_con_setrcache");
+ (FARPROC) p_krb5_get_server_rcache =
+ GetProcAddress(hKRB5_32, "krb5_get_server_rcache");
+ (FARPROC) p_krb5_auth_con_getrcache =
+ GetProcAddress(hKRB5_32, "krb5_auth_con_getrcache");
+ (FARPROC) p_krb5_kt_close = GetProcAddress(hKRB5_32, "krb5_kt_close");
+ (FARPROC) p_krb5_kt_get_entry =
+ GetProcAddress(hKRB5_32, "krb5_kt_get_entry");
+}
+
+/* Stubs for each function to be dynamicly loaded */
+void kssl_krb5_free_data_contents(krb5_context CO, krb5_data *data)
+{
+ if (!krb5_loaded)
+ load_krb5_dll();
+
+ if (p_krb5_free_data_contents)
+ p_krb5_free_data_contents(CO, data);
+}
+
+krb5_error_code
+kssl_krb5_mk_req_extended(krb5_context CO,
+ krb5_auth_context *pACO,
+ krb5_const krb5_flags F,
+ krb5_data *pD1, krb5_creds *pC, krb5_data *pD2)
+{
+ if (!krb5_loaded)
+ load_krb5_dll();
+
+ if (p_krb5_mk_req_extended)
+ return (p_krb5_mk_req_extended(CO, pACO, F, pD1, pC, pD2));
+ else
+ return KRB5KRB_ERR_GENERIC;
+}
+
+krb5_error_code
+kssl_krb5_auth_con_init(krb5_context CO, krb5_auth_context *pACO)
+{
+ if (!krb5_loaded)
+ load_krb5_dll();
+
+ if (p_krb5_auth_con_init)
+ return (p_krb5_auth_con_init(CO, pACO));
+ else
+ return KRB5KRB_ERR_GENERIC;
+}
+
+krb5_error_code
+kssl_krb5_auth_con_free(krb5_context CO, krb5_auth_context ACO)
+{
+ if (!krb5_loaded)
+ load_krb5_dll();
+
+ if (p_krb5_auth_con_free)
+ return (p_krb5_auth_con_free(CO, ACO));
+ else
+ return KRB5KRB_ERR_GENERIC;
+}
+
+krb5_error_code
+kssl_krb5_get_credentials(krb5_context CO,
+ krb5_const krb5_flags F,
+ krb5_ccache CC, krb5_creds *pCR, krb5_creds **ppCR)
+{
+ if (!krb5_loaded)
+ load_krb5_dll();
+
+ if (p_krb5_get_credentials)
+ return (p_krb5_get_credentials(CO, F, CC, pCR, ppCR));
+ else
+ return KRB5KRB_ERR_GENERIC;
+}
+
+krb5_error_code
+kssl_krb5_sname_to_principal(krb5_context CO,
+ krb5_const char *pC1,
+ krb5_const char *pC2,
+ krb5_int32 I, krb5_principal *pPR)
+{
+ if (!krb5_loaded)
+ load_krb5_dll();
+
+ if (p_krb5_sname_to_principal)
+ return (p_krb5_sname_to_principal(CO, pC1, pC2, I, pPR));
+ else
+ return KRB5KRB_ERR_GENERIC;
+}
+
+krb5_error_code kssl_krb5_cc_default(krb5_context CO, krb5_ccache *pCC)
+{
+ if (!krb5_loaded)
+ load_krb5_dll();
+
+ if (p_krb5_cc_default)
+ return (p_krb5_cc_default(CO, pCC));
+ else
+ return KRB5KRB_ERR_GENERIC;
+}
+
+krb5_error_code kssl_krb5_init_context(krb5_context *pCO)
+{
+ if (!krb5_loaded)
+ load_krb5_dll();
+
+ if (p_krb5_init_context)
+ return (p_krb5_init_context(pCO));
+ else
+ return KRB5KRB_ERR_GENERIC;
+}
+
+void kssl_krb5_free_context(krb5_context CO)
+{
+ if (!krb5_loaded)
+ load_krb5_dll();
+
+ if (p_krb5_free_context)
+ p_krb5_free_context(CO);
+}
+
+void kssl_krb5_free_principal(krb5_context c, krb5_principal p)
+{
+ if (!krb5_loaded)
+ load_krb5_dll();
+
+ if (p_krb5_free_principal)
+ p_krb5_free_principal(c, p);
+}
+
+krb5_error_code
+kssl_krb5_kt_resolve(krb5_context con, krb5_const char *sz, krb5_keytab *kt)
+{
+ if (!krb5_loaded)
+ load_krb5_dll();
+
+ if (p_krb5_kt_resolve)
+ return (p_krb5_kt_resolve(con, sz, kt));
+ else
+ return KRB5KRB_ERR_GENERIC;
+}
+
+krb5_error_code kssl_krb5_kt_default(krb5_context con, krb5_keytab *kt)
+{
+ if (!krb5_loaded)
+ load_krb5_dll();
+
+ if (p_krb5_kt_default)
+ return (p_krb5_kt_default(con, kt));
+ else
+ return KRB5KRB_ERR_GENERIC;
+}
+
+krb5_error_code kssl_krb5_free_ticket(krb5_context con, krb5_ticket *kt)
+{
+ if (!krb5_loaded)
+ load_krb5_dll();
+
+ if (p_krb5_free_ticket)
+ return (p_krb5_free_ticket(con, kt));
+ else
+ return KRB5KRB_ERR_GENERIC;
+}
+
+krb5_error_code
+kssl_krb5_rd_req(krb5_context con, krb5_auth_context *pacon,
+ krb5_const krb5_data *data,
+ krb5_const_principal princ, krb5_keytab keytab,
+ krb5_flags *flags, krb5_ticket **pptkt)
+{
+ if (!krb5_loaded)
+ load_krb5_dll();
+
+ if (p_krb5_rd_req)
+ return (p_krb5_rd_req(con, pacon, data, princ, keytab, flags, pptkt));
+ else
+ return KRB5KRB_ERR_GENERIC;
+}
+
+krb5_boolean
+krb5_principal_compare(krb5_context con, krb5_const_principal princ1,
+ krb5_const_principal princ2)
+{
+ if (!krb5_loaded)
+ load_krb5_dll();
+
+ if (p_krb5_principal_compare)
+ return (p_krb5_principal_compare(con, princ1, princ2));
+ else
+ return KRB5KRB_ERR_GENERIC;
+}
+
+krb5_error_code
+krb5_decrypt_tkt_part(krb5_context con, krb5_const krb5_keyblock *keys,
+ krb5_ticket *ticket)
+{
+ if (!krb5_loaded)
+ load_krb5_dll();
+
+ if (p_krb5_decrypt_tkt_part)
+ return (p_krb5_decrypt_tkt_part(con, keys, ticket));
+ else
+ return KRB5KRB_ERR_GENERIC;
+}
+
+krb5_error_code krb5_timeofday(krb5_context con, krb5_int32 *timeret)
+{
+ if (!krb5_loaded)
+ load_krb5_dll();
+
+ if (p_krb5_timeofday)
+ return (p_krb5_timeofday(con, timeret));
+ else
+ return KRB5KRB_ERR_GENERIC;
+}
+
+krb5_error_code krb5_rc_default(krb5_context con, krb5_rcache *rc)
+{
+ if (!krb5_loaded)
+ load_krb5_dll();
+
+ if (p_krb5_rc_default)
+ return (p_krb5_rc_default(con, rc));
+ else
+ return KRB5KRB_ERR_GENERIC;
+}
+
+krb5_error_code
+krb5_rc_initialize(krb5_context con, krb5_rcache rc, krb5_deltat lifespan)
+{
+ if (!krb5_loaded)
+ load_krb5_dll();
+
+ if (p_krb5_rc_initialize)
+ return (p_krb5_rc_initialize(con, rc, lifespan));
+ else
+ return KRB5KRB_ERR_GENERIC;
+}
+
+krb5_error_code
+krb5_rc_get_lifespan(krb5_context con, krb5_rcache rc, krb5_deltat *lifespanp)
+{
+ if (!krb5_loaded)
+ load_krb5_dll();
+
+ if (p_krb5_rc_get_lifespan)
+ return (p_krb5_rc_get_lifespan(con, rc, lifespanp));
+ else
+ return KRB5KRB_ERR_GENERIC;
+}
+
+krb5_error_code krb5_rc_destroy(krb5_context con, krb5_rcache rc)
+{
+ if (!krb5_loaded)
+ load_krb5_dll();
+
+ if (p_krb5_rc_destroy)
+ return (p_krb5_rc_destroy(con, rc));
+ else
+ return KRB5KRB_ERR_GENERIC;
+}
+
+size_t krb5_checksum_size(krb5_context context, krb5_cksumtype ctype)
+{
+ if (!krb5_loaded)
+ load_krb5_dll();
+
+ if (p_krb5_checksum_size)
+ return (p_krb5_checksum_size(context, ctype));
+ else
+ return KRB5KRB_ERR_GENERIC;
+}
+
+krb5_boolean valid_cksumtype(krb5_cksumtype ctype)
+{
+ if (!krb5_loaded)
+ load_krb5_dll();
+
+ if (p_valid_cksumtype)
+ return (p_valid_cksumtype(ctype));
+ else
+ return KRB5KRB_ERR_GENERIC;
+}
+
+krb5_error_code krb5_kt_free_entry(krb5_context con, krb5_keytab_entry *entry)
+{
+ if (!krb5_loaded)
+ load_krb5_dll();
+
+ if (p_krb5_kt_free_entry)
+ return (p_krb5_kt_free_entry(con, entry));
+ else
+ return KRB5KRB_ERR_GENERIC;
+}
+
+/* Structure definitions */
+# ifndef NO_DEF_KRB5_CCACHE
+# ifndef krb5_x
+# define krb5_x(ptr,args) ((ptr)?((*(ptr)) args):(abort(),1))
+# define krb5_xc(ptr,args) ((ptr)?((*(ptr)) args):(abort(),(char*)0))
+# endif
+
+typedef krb5_pointer krb5_cc_cursor; /* cursor for sequential lookup */
+
+typedef struct _krb5_ccache {
+ krb5_magic magic;
+ struct _krb5_cc_ops FAR *ops;
+ krb5_pointer data;
+} *krb5_ccache;
+
+typedef struct _krb5_cc_ops {
+ krb5_magic magic;
+ char *prefix;
+ char *(KRB5_CALLCONV *get_name)
+ (krb5_context, krb5_ccache);
+ krb5_error_code(KRB5_CALLCONV *resolve)
+ (krb5_context, krb5_ccache *, const char *);
+ krb5_error_code(KRB5_CALLCONV *gen_new)
+ (krb5_context, krb5_ccache *);
+ krb5_error_code(KRB5_CALLCONV *init)
+ (krb5_context, krb5_ccache, krb5_principal);
+ krb5_error_code(KRB5_CALLCONV *destroy)
+ (krb5_context, krb5_ccache);
+ krb5_error_code(KRB5_CALLCONV *close)
+ (krb5_context, krb5_ccache);
+ krb5_error_code(KRB5_CALLCONV *store)
+ (krb5_context, krb5_ccache, krb5_creds *);
+ krb5_error_code(KRB5_CALLCONV *retrieve)
+ (krb5_context, krb5_ccache, krb5_flags, krb5_creds *, krb5_creds *);
+ krb5_error_code(KRB5_CALLCONV *get_princ)
+ (krb5_context, krb5_ccache, krb5_principal *);
+ krb5_error_code(KRB5_CALLCONV *get_first)
+ (krb5_context, krb5_ccache, krb5_cc_cursor *);
+ krb5_error_code(KRB5_CALLCONV *get_next)
+ (krb5_context, krb5_ccache, krb5_cc_cursor *, krb5_creds *);
+ krb5_error_code(KRB5_CALLCONV *end_get)
+ (krb5_context, krb5_ccache, krb5_cc_cursor *);
+ krb5_error_code(KRB5_CALLCONV *remove_cred)
+ (krb5_context, krb5_ccache, krb5_flags, krb5_creds *);
+ krb5_error_code(KRB5_CALLCONV *set_flags)
+ (krb5_context, krb5_ccache, krb5_flags);
+} krb5_cc_ops;
+# endif /* NO_DEF_KRB5_CCACHE */
+
+krb5_error_code
+ kssl_krb5_cc_get_principal
+ (krb5_context context, krb5_ccache cache, krb5_principal *principal) {
+ if (p_krb5_cc_get_principal)
+ return (p_krb5_cc_get_principal(context, cache, principal));
+ else
+ return (krb5_x((cache)->ops->get_princ, (context, cache, principal)));
+}
+
+krb5_error_code
+kssl_krb5_auth_con_setrcache(krb5_context con, krb5_auth_context acon,
+ krb5_rcache rcache)
+{
+ if (p_krb5_auth_con_setrcache)
+ return (p_krb5_auth_con_setrcache(con, acon, rcache));
+ else
+ return KRB5KRB_ERR_GENERIC;
+}
+
+krb5_error_code
+kssl_krb5_get_server_rcache(krb5_context con, krb5_const krb5_data *data,
+ krb5_rcache *rcache)
+{
+ if (p_krb5_get_server_rcache)
+ return (p_krb5_get_server_rcache(con, data, rcache));
+ else
+ return KRB5KRB_ERR_GENERIC;
+}
+
+krb5_error_code
+kssl_krb5_auth_con_getrcache(krb5_context con, krb5_auth_context acon,
+ krb5_rcache *prcache)
+{
+ if (p_krb5_auth_con_getrcache)
+ return (p_krb5_auth_con_getrcache(con, acon, prcache));
+ else
+ return KRB5KRB_ERR_GENERIC;
+}
+
+krb5_error_code kssl_krb5_kt_close(krb5_context context, krb5_keytab keytab)
+{
+ if (p_krb5_kt_close)
+ return (p_krb5_kt_close(context, keytab));
+ else
+ return KRB5KRB_ERR_GENERIC;
+}
+
+krb5_error_code
+kssl_krb5_kt_get_entry(krb5_context context, krb5_keytab keytab,
+ krb5_const_principal principal, krb5_kvno vno,
+ krb5_enctype enctype, krb5_keytab_entry *entry)
+{
+ if (p_krb5_kt_get_entry)
+ return (p_krb5_kt_get_entry
+ (context, keytab, principal, vno, enctype, entry));
+ else
+ return KRB5KRB_ERR_GENERIC;
+}
+# endif /* OPENSSL_SYS_WINDOWS || OPENSSL_SYS_WIN32 */
+
+/*
+ * memory allocation functions for non-temporary storage (e.g. stuff that
+ * gets saved into the kssl context)
+ */
+static void *kssl_calloc(size_t nmemb, size_t size)
+{
+ void *p;
+
+ p = OPENSSL_malloc(nmemb * size);
+ if (p) {
+ memset(p, 0, nmemb * size);
+ }
+ return p;
+}
+
+# define kssl_malloc(size) OPENSSL_malloc((size))
+# define kssl_realloc(ptr, size) OPENSSL_realloc(ptr, size)
+# define kssl_free(ptr) OPENSSL_free((ptr))
+
+char
+*kstring(char *string)
+{
+ static char *null = "[NULL]";
+
+ return ((string == NULL) ? null : string);
+}
+
+/*
+ * Given KRB5 enctype (basically DES or 3DES), return closest match openssl
+ * EVP_ encryption algorithm. Return NULL for unknown or problematic
+ * (krb5_dk_encrypt) enctypes. Assume ENCTYPE_*_RAW (krb5_raw_encrypt) are
+ * OK.
+ */
+const EVP_CIPHER *kssl_map_enc(krb5_enctype enctype)
+{
+ switch (enctype) {
+ case ENCTYPE_DES_HMAC_SHA1: /* EVP_des_cbc(); */
+ case ENCTYPE_DES_CBC_CRC:
+ case ENCTYPE_DES_CBC_MD4:
+ case ENCTYPE_DES_CBC_MD5:
+ case ENCTYPE_DES_CBC_RAW:
+ return EVP_des_cbc();
+ break;
+ case ENCTYPE_DES3_CBC_SHA1: /* EVP_des_ede3_cbc(); */
+ case ENCTYPE_DES3_CBC_SHA:
+ case ENCTYPE_DES3_CBC_RAW:
+ return EVP_des_ede3_cbc();
+ break;
+ default:
+ return NULL;
+ break;
+ }
+}
+
+/*
+ * Return true:1 if p "looks like" the start of the real authenticator
+ * described in kssl_skip_confound() below. The ASN.1 pattern is "62 xx 30
+ * yy" (APPLICATION-2, SEQUENCE), where xx-yy =~ 2, and xx and yy are
+ * possibly multi-byte length fields.
+ */
+static int kssl_test_confound(unsigned char *p)
+{
+ int len = 2;
+ int xx = 0, yy = 0;
+
+ if (*p++ != 0x62)
+ return 0;
+ if (*p > 0x82)
+ return 0;
+ switch (*p) {
+ case 0x82:
+ p++;
+ xx = (*p++ << 8);
+ xx += *p++;
+ break;
+ case 0x81:
+ p++;
+ xx = *p++;
+ break;
+ case 0x80:
+ return 0;
+ default:
+ xx = *p++;
+ break;
+ }
+ if (*p++ != 0x30)
+ return 0;
+ if (*p > 0x82)
+ return 0;
+ switch (*p) {
+ case 0x82:
+ p++;
+ len += 2;
+ yy = (*p++ << 8);
+ yy += *p++;
+ break;
+ case 0x81:
+ p++;
+ len++;
+ yy = *p++;
+ break;
+ case 0x80:
+ return 0;
+ default:
+ yy = *p++;
+ break;
+ }
+
+ return (xx - len == yy) ? 1 : 0;
+}
+
+/*
+ * Allocate, fill, and return cksumlens array of checksum lengths. This
+ * array holds just the unique elements from the krb5_cksumarray[]. array[n]
+ * == 0 signals end of data. The krb5_cksumarray[] was an internal variable
+ * that has since been replaced by a more general method for storing the
+ * data. It should not be used. Instead we use real API calls and make a
+ * guess for what the highest assigned CKSUMTYPE_ constant is. As of 1.2.2
+ * it is 0x000c (CKSUMTYPE_HMAC_SHA1_DES3). So we will use 0x0010.
+ */
+static size_t *populate_cksumlens(void)
+{
+ int i, j, n;
+ static size_t *cklens = NULL;
+
+# ifdef KRB5_MIT_OLD11
+ n = krb5_max_cksum;
+# else
+ n = 0x0010;
+# endif /* KRB5_MIT_OLD11 */
+
+# ifdef KRB5CHECKAUTH
+ if (!cklens && !(cklens = (size_t *)calloc(sizeof(int), n + 1)))
+ return NULL;
+
+ for (i = 0; i < n; i++) {
+ if (!valid_cksumtype(i))
+ continue; /* array has holes */
+ for (j = 0; j < n; j++) {
+ if (cklens[j] == 0) {
+ cklens[j] = krb5_checksum_size(NULL, i);
+ break; /* krb5 elem was new: add */
+ }
+ if (cklens[j] == krb5_checksum_size(NULL, i)) {
+ break; /* ignore duplicate elements */
+ }
+ }
+ }
+# endif /* KRB5CHECKAUTH */
+
+ return cklens;
+}
+
+/*-
+ * Return pointer to start of real authenticator within authenticator, or
+ * return NULL on error.
+ * Decrypted authenticator looks like this:
+ * [0 or 8 byte confounder] [4-24 byte checksum] [real authent'r]
+ * This hackery wouldn't be necessary if MIT KRB5 1.0.6 had the
+ * krb5_auth_con_getcksumtype() function advertised in its krb5.h.
+ */
+unsigned char *kssl_skip_confound(krb5_enctype etype, unsigned char *a)
+{
+ int i, conlen;
+ size_t cklen;
+ static size_t *cksumlens = NULL;
+ unsigned char *test_auth;
+
+ conlen = (etype) ? 8 : 0;
+
+ if (!cksumlens && !(cksumlens = populate_cksumlens()))
+ return NULL;
+ for (i = 0; (cklen = cksumlens[i]) != 0; i++) {
+ test_auth = a + conlen + cklen;
+ if (kssl_test_confound(test_auth))
+ return test_auth;
+ }
+
+ return NULL;
+}
+
+/*
+ * Set kssl_err error info when reason text is a simple string kssl_err =
+ * struct { int reason; char text[KSSL_ERR_MAX+1]; }
+ */
+void kssl_err_set(KSSL_ERR *kssl_err, int reason, char *text)
+{
+ if (kssl_err == NULL)
+ return;
+
+ kssl_err->reason = reason;
+ BIO_snprintf(kssl_err->text, KSSL_ERR_MAX, "%s", text);
+ return;
+}
+
+/*
+ * Display contents of krb5_data struct, for debugging
+ */
+void print_krb5_data(char *label, krb5_data *kdata)
+{
+ int i;
+
+ fprintf(stderr, "%s[%d] ", label, kdata->length);
+ for (i = 0; i < (int)kdata->length; i++) {
+ if (0 && isprint((int)kdata->data[i]))
+ fprintf(stderr, "%c ", kdata->data[i]);
+ else
+ fprintf(stderr, "%02x ", (unsigned char)kdata->data[i]);
+ }
+ fprintf(stderr, "\n");
+}
+
+/*
+ * Display contents of krb5_authdata struct, for debugging
+ */
+void print_krb5_authdata(char *label, krb5_authdata **adata)
+{
+ if (adata == NULL) {
+ fprintf(stderr, "%s, authdata==0\n", label);
+ return;
+ }
+ fprintf(stderr, "%s [%p]\n", label, (void *)adata);
+# if 0
+ {
+ int i;
+ fprintf(stderr, "%s[at%d:%d] ", label, adata->ad_type, adata->length);
+ for (i = 0; i < adata->length; i++) {
+ fprintf(stderr, (isprint(adata->contents[i])) ? "%c " : "%02x",
+ adata->contents[i]);
+ }
+ fprintf(stderr, "\n");
+ }
+# endif
+}
+
+/*
+ * Display contents of krb5_keyblock struct, for debugging
+ */
+void print_krb5_keyblock(char *label, krb5_keyblock *keyblk)
+{
+ int i;
+
+ if (keyblk == NULL) {
+ fprintf(stderr, "%s, keyblk==0\n", label);
+ return;
+ }
+# ifdef KRB5_HEIMDAL
+ fprintf(stderr, "%s\n\t[et%d:%d]: ", label, keyblk->keytype,
+ keyblk->keyvalue->length);
+ for (i = 0; i < (int)keyblk->keyvalue->length; i++) {
+ fprintf(stderr, "%02x",
+ (unsigned char *)(keyblk->keyvalue->contents)[i]);
+ }
+ fprintf(stderr, "\n");
+# else
+ fprintf(stderr, "%s\n\t[et%d:%d]: ", label, keyblk->enctype,
+ keyblk->length);
+ for (i = 0; i < (int)keyblk->length; i++) {
+ fprintf(stderr, "%02x", keyblk->contents[i]);
+ }
+ fprintf(stderr, "\n");
+# endif
+}
+
+/*
+ * Display contents of krb5_principal_data struct, for debugging
+ * (krb5_principal is typedef'd == krb5_principal_data *)
+ */
+static void print_krb5_princ(char *label, krb5_principal_data *princ)
+{
+ int i, ui, uj;
+
+ fprintf(stderr, "%s principal Realm: ", label);
+ if (princ == NULL)
+ return;
+ for (ui = 0; ui < (int)princ->realm.length; ui++)
+ putchar(princ->realm.data[ui]);
+ fprintf(stderr, " (nametype %d) has %d strings:\n", princ->type,
+ princ->length);
+ for (i = 0; i < (int)princ->length; i++) {
+ fprintf(stderr, "\t%d [%d]: ", i, princ->data[i].length);
+ for (uj = 0; uj < (int)princ->data[i].length; uj++) {
+ putchar(princ->data[i].data[uj]);
+ }
+ fprintf(stderr, "\n");
+ }
+ return;
+}
+
+/*- Given krb5 service (typically "kssl") and hostname in kssl_ctx,
+ * Return encrypted Kerberos ticket for service @ hostname.
+ * If authenp is non-NULL, also return encrypted authenticator,
+ * whose data should be freed by caller.
+ * (Originally was: Create Kerberos AP_REQ message for SSL Client.)
+ *
+ * 19990628 VRS Started; Returns Kerberos AP_REQ message.
+ * 20010409 VRS Modified for RFC2712; Returns enc tkt.
+ * 20010606 VRS May also return optional authenticator.
+ */
+krb5_error_code kssl_cget_tkt( /* UPDATE */ KSSL_CTX *kssl_ctx,
+ /*
+ * OUT
+ */ krb5_data **enc_ticketp,
+ /*
+ * UPDATE
+ */ krb5_data *authenp,
+ /*
+ * OUT
+ */ KSSL_ERR *kssl_err)
+{
+ krb5_error_code krb5rc = KRB5KRB_ERR_GENERIC;
+ krb5_context krb5context = NULL;
+ krb5_auth_context krb5auth_context = NULL;
+ krb5_ccache krb5ccdef = NULL;
+ krb5_creds krb5creds, *krb5credsp = NULL;
+ krb5_data krb5_app_req;
+
+ kssl_err_set(kssl_err, 0, "");
+ memset((char *)&krb5creds, 0, sizeof(krb5creds));
+
+ if (!kssl_ctx) {
+ kssl_err_set(kssl_err, SSL_R_KRB5_S_INIT, "No kssl_ctx defined.\n");
+ goto err;
+ } else if (!kssl_ctx->service_host) {
+ kssl_err_set(kssl_err, SSL_R_KRB5_S_INIT,
+ "kssl_ctx service_host undefined.\n");
+ goto err;
+ }
+
+ if ((krb5rc = krb5_init_context(&krb5context)) != 0) {
+ BIO_snprintf(kssl_err->text, KSSL_ERR_MAX,
+ "krb5_init_context() fails: %d\n", krb5rc);
+ kssl_err->reason = SSL_R_KRB5_C_INIT;
+ goto err;
+ }
+
+ if ((krb5rc = krb5_sname_to_principal(krb5context,
+ kssl_ctx->service_host,
+ (kssl_ctx->service_name) ?
+ kssl_ctx->service_name : KRB5SVC,
+ KRB5_NT_SRV_HST,
+ &krb5creds.server)) != 0) {
+ BIO_snprintf(kssl_err->text, KSSL_ERR_MAX,
+ "krb5_sname_to_principal() fails for %s/%s\n",
+ kssl_ctx->service_host,
+ (kssl_ctx->
+ service_name) ? kssl_ctx->service_name : KRB5SVC);
+ kssl_err->reason = SSL_R_KRB5_C_INIT;
+ goto err;
+ }
+
+ if ((krb5rc = krb5_cc_default(krb5context, &krb5ccdef)) != 0) {
+ kssl_err_set(kssl_err, SSL_R_KRB5_C_CC_PRINC,
+ "krb5_cc_default fails.\n");
+ goto err;
+ }
+
+ if ((krb5rc = krb5_cc_get_principal(krb5context, krb5ccdef,
+ &krb5creds.client)) != 0) {
+ kssl_err_set(kssl_err, SSL_R_KRB5_C_CC_PRINC,
+ "krb5_cc_get_principal() fails.\n");
+ goto err;
+ }
+
+ if ((krb5rc = krb5_get_credentials(krb5context, 0, krb5ccdef,
+ &krb5creds, &krb5credsp)) != 0) {
+ kssl_err_set(kssl_err, SSL_R_KRB5_C_GET_CRED,
+ "krb5_get_credentials() fails.\n");
+ goto err;
+ }
+
+ *enc_ticketp = &krb5credsp->ticket;
+# ifdef KRB5_HEIMDAL
+ kssl_ctx->enctype = krb5credsp->session.keytype;
+# else
+ kssl_ctx->enctype = krb5credsp->keyblock.enctype;
+# endif
+
+ krb5rc = KRB5KRB_ERR_GENERIC;
+ /* caller should free data of krb5_app_req */
+ /*
+ * 20010406 VRS deleted for real KerberosWrapper 20010605 VRS reinstated
+ * to offer Authenticator to KerberosWrapper
+ */
+ krb5_app_req.length = 0;
+ if (authenp) {
+ krb5_data krb5in_data;
+ const unsigned char *p;
+ long arlen;
+ KRB5_APREQBODY *ap_req;
+
+ authenp->length = 0;
+ krb5in_data.data = NULL;
+ krb5in_data.length = 0;
+ if ((krb5rc = krb5_mk_req_extended(krb5context,
+ &krb5auth_context, 0, &krb5in_data,
+ krb5credsp, &krb5_app_req)) != 0) {
+ kssl_err_set(kssl_err, SSL_R_KRB5_C_MK_REQ,
+ "krb5_mk_req_extended() fails.\n");
+ goto err;
+ }
+
+ arlen = krb5_app_req.length;
+ p = (unsigned char *)krb5_app_req.data;
+ ap_req = (KRB5_APREQBODY *)d2i_KRB5_APREQ(NULL, &p, arlen);
+ if (ap_req) {
+ authenp->length = i2d_KRB5_ENCDATA(ap_req->authenticator, NULL);
+ if (authenp->length && (authenp->data = malloc(authenp->length))) {
+ unsigned char *adp = (unsigned char *)authenp->data;
+ authenp->length =
+ i2d_KRB5_ENCDATA(ap_req->authenticator, &adp);
+ }
+ }
+
+ if (ap_req)
+ KRB5_APREQ_free((KRB5_APREQ *) ap_req);
+ if (krb5_app_req.length)
+ kssl_krb5_free_data_contents(krb5context, &krb5_app_req);
+ }
+# ifdef KRB5_HEIMDAL
+ if (kssl_ctx_setkey(kssl_ctx, &krb5credsp->session)) {
+ kssl_err_set(kssl_err, SSL_R_KRB5_C_INIT,
+ "kssl_ctx_setkey() fails.\n");
+ }
+# else
+ if (kssl_ctx_setkey(kssl_ctx, &krb5credsp->keyblock)) {
+ kssl_err_set(kssl_err, SSL_R_KRB5_C_INIT,
+ "kssl_ctx_setkey() fails.\n");
+ }
+# endif
+ else
+ krb5rc = 0;
+
+ err:
+# ifdef KSSL_DEBUG
+ kssl_ctx_show(kssl_ctx);
+# endif /* KSSL_DEBUG */
+
+ if (krb5creds.client)
+ krb5_free_principal(krb5context, krb5creds.client);
+ if (krb5creds.server)
+ krb5_free_principal(krb5context, krb5creds.server);
+ if (krb5auth_context)
+ krb5_auth_con_free(krb5context, krb5auth_context);
+ if (krb5context)
+ krb5_free_context(krb5context);
+ return (krb5rc);
+}
+
+/*-
+ * Given d2i_-decoded asn1ticket, allocate and return a new krb5_ticket.
+ * Return Kerberos error code and kssl_err struct on error.
+ * Allocates krb5_ticket and krb5_principal; caller should free these.
+ *
+ * 20010410 VRS Implemented krb5_decode_ticket() as
+ * old_krb5_decode_ticket(). Missing from MIT1.0.6.
+ * 20010615 VRS Re-cast as openssl/asn1 d2i_*() functions.
+ * Re-used some of the old krb5_decode_ticket()
+ * code here. This tkt should alloc/free just
+ * like the real thing.
+ */
+static krb5_error_code kssl_TKT2tkt( /* IN */ krb5_context krb5context,
+ /*
+ * IN
+ */ KRB5_TKTBODY *asn1ticket,
+ /*
+ * OUT
+ */ krb5_ticket **krb5ticket,
+ /*
+ * OUT
+ */ KSSL_ERR *kssl_err)
+{
+ krb5_error_code krb5rc = KRB5KRB_ERR_GENERIC;
+ krb5_ticket *new5ticket = NULL;
+ ASN1_GENERALSTRING *gstr_svc, *gstr_host;
+
+ *krb5ticket = NULL;
+
+ if (asn1ticket == NULL || asn1ticket->realm == NULL ||
+ asn1ticket->sname == NULL ||
+ sk_ASN1_GENERALSTRING_num(asn1ticket->sname->namestring) < 2) {
+ BIO_snprintf(kssl_err->text, KSSL_ERR_MAX,
+ "Null field in asn1ticket.\n");
+ kssl_err->reason = SSL_R_KRB5_S_RD_REQ;
+ return KRB5KRB_ERR_GENERIC;
+ }
+
+ if ((new5ticket = (krb5_ticket *)calloc(1, sizeof(krb5_ticket))) == NULL) {
+ BIO_snprintf(kssl_err->text, KSSL_ERR_MAX,
+ "Unable to allocate new krb5_ticket.\n");
+ kssl_err->reason = SSL_R_KRB5_S_RD_REQ;
+ return ENOMEM; /* or KRB5KRB_ERR_GENERIC; */
+ }
+
+ gstr_svc = sk_ASN1_GENERALSTRING_value(asn1ticket->sname->namestring, 0);
+ gstr_host = sk_ASN1_GENERALSTRING_value(asn1ticket->sname->namestring, 1);
+
+ if ((krb5rc = kssl_build_principal_2(krb5context,
+ &new5ticket->server,
+ asn1ticket->realm->length,
+ (char *)asn1ticket->realm->data,
+ gstr_svc->length,
+ (char *)gstr_svc->data,
+ gstr_host->length,
+ (char *)gstr_host->data)) != 0) {
+ free(new5ticket);
+ BIO_snprintf(kssl_err->text, KSSL_ERR_MAX,
+ "Error building ticket server principal.\n");
+ kssl_err->reason = SSL_R_KRB5_S_RD_REQ;
+ return krb5rc; /* or KRB5KRB_ERR_GENERIC; */
+ }
+
+ krb5_princ_type(krb5context, new5ticket->server) =
+ asn1ticket->sname->nametype->data[0];
+ new5ticket->enc_part.enctype = asn1ticket->encdata->etype->data[0];
+ new5ticket->enc_part.kvno = asn1ticket->encdata->kvno->data[0];
+ new5ticket->enc_part.ciphertext.length =
+ asn1ticket->encdata->cipher->length;
+ if ((new5ticket->enc_part.ciphertext.data =
+ calloc(1, asn1ticket->encdata->cipher->length)) == NULL) {
+ free(new5ticket);
+ BIO_snprintf(kssl_err->text, KSSL_ERR_MAX,
+ "Error allocating cipher in krb5ticket.\n");
+ kssl_err->reason = SSL_R_KRB5_S_RD_REQ;
+ return KRB5KRB_ERR_GENERIC;
+ } else {
+ memcpy(new5ticket->enc_part.ciphertext.data,
+ asn1ticket->encdata->cipher->data,
+ asn1ticket->encdata->cipher->length);
+ }
+
+ *krb5ticket = new5ticket;
+ return 0;
+}
+
+/*-
+ * Given krb5 service name in KSSL_CTX *kssl_ctx (typically "kssl"),
+ * and krb5 AP_REQ message & message length,
+ * Return Kerberos session key and client principle
+ * to SSL Server in KSSL_CTX *kssl_ctx.
+ *
+ * 19990702 VRS Started.
+ */
+krb5_error_code kssl_sget_tkt( /* UPDATE */ KSSL_CTX *kssl_ctx,
+ /*
+ * IN
+ */ krb5_data *indata,
+ /*
+ * OUT
+ */ krb5_ticket_times *ttimes,
+ /*
+ * OUT
+ */ KSSL_ERR *kssl_err)
+{
+ krb5_error_code krb5rc = KRB5KRB_ERR_GENERIC;
+ static krb5_context krb5context = NULL;
+ static krb5_auth_context krb5auth_context = NULL;
+ krb5_ticket *krb5ticket = NULL;
+ KRB5_TKTBODY *asn1ticket = NULL;
+ const unsigned char *p;
+ krb5_keytab krb5keytab = NULL;
+ krb5_keytab_entry kt_entry;
+ krb5_principal krb5server;
+ krb5_rcache rcache = NULL;
+
+ kssl_err_set(kssl_err, 0, "");
+
+ if (!kssl_ctx) {
+ kssl_err_set(kssl_err, SSL_R_KRB5_S_INIT, "No kssl_ctx defined.\n");
+ goto err;
+ }
+# ifdef KSSL_DEBUG
+ fprintf(stderr, "in kssl_sget_tkt(%s)\n",
+ kstring(kssl_ctx->service_name));
+# endif /* KSSL_DEBUG */
+
+ if (!krb5context && (krb5rc = krb5_init_context(&krb5context))) {
+ kssl_err_set(kssl_err, SSL_R_KRB5_S_INIT,
+ "krb5_init_context() fails.\n");
+ goto err;
+ }
+ if (krb5auth_context &&
+ (krb5rc = krb5_auth_con_free(krb5context, krb5auth_context))) {
+ kssl_err_set(kssl_err, SSL_R_KRB5_S_INIT,
+ "krb5_auth_con_free() fails.\n");
+ goto err;
+ } else
+ krb5auth_context = NULL;
+ if (!krb5auth_context &&
+ (krb5rc = krb5_auth_con_init(krb5context, &krb5auth_context))) {
+ kssl_err_set(kssl_err, SSL_R_KRB5_S_INIT,
+ "krb5_auth_con_init() fails.\n");
+ goto err;
+ }
+
+ if ((krb5rc = krb5_auth_con_getrcache(krb5context, krb5auth_context,
+ &rcache))) {
+ kssl_err_set(kssl_err, SSL_R_KRB5_S_INIT,
+ "krb5_auth_con_getrcache() fails.\n");
+ goto err;
+ }
+
+ if ((krb5rc = krb5_sname_to_principal(krb5context, NULL,
+ (kssl_ctx->service_name) ?
+ kssl_ctx->service_name : KRB5SVC,
+ KRB5_NT_SRV_HST,
+ &krb5server)) != 0) {
+ kssl_err_set(kssl_err, SSL_R_KRB5_S_INIT,
+ "krb5_sname_to_principal() fails.\n");
+ goto err;
+ }
+
+ if (rcache == NULL) {
+ if ((krb5rc = krb5_get_server_rcache(krb5context,
+ krb5_princ_component(krb5context,
+ krb5server,
+ 0),
+ &rcache))) {
+ kssl_err_set(kssl_err, SSL_R_KRB5_S_INIT,
+ "krb5_get_server_rcache() fails.\n");
+ goto err;
+ }
+ }
+
+ if ((krb5rc =
+ krb5_auth_con_setrcache(krb5context, krb5auth_context, rcache))) {
+ kssl_err_set(kssl_err, SSL_R_KRB5_S_INIT,
+ "krb5_auth_con_setrcache() fails.\n");
+ goto err;
+ }
+
+ /*
+ * kssl_ctx->keytab_file == NULL ==> use Kerberos default
+ */
+ if (kssl_ctx->keytab_file) {
+ krb5rc = krb5_kt_resolve(krb5context, kssl_ctx->keytab_file,
+ &krb5keytab);
+ if (krb5rc) {
+ kssl_err_set(kssl_err, SSL_R_KRB5_S_INIT,
+ "krb5_kt_resolve() fails.\n");
+ goto err;
+ }
+ } else {
+ krb5rc = krb5_kt_default(krb5context, &krb5keytab);
+ if (krb5rc) {
+ kssl_err_set(kssl_err, SSL_R_KRB5_S_INIT,
+ "krb5_kt_default() fails.\n");
+ goto err;
+ }
+ }
+
+ /*- Actual Kerberos5 krb5_recvauth() has initial conversation here
+ * o check KRB5_SENDAUTH_BADAUTHVERS
+ * unless KRB5_RECVAUTH_SKIP_VERSION
+ * o check KRB5_SENDAUTH_BADAPPLVERS
+ * o send "0" msg if all OK
+ */
+
+ /*-
+ * 20010411 was using AP_REQ instead of true KerberosWrapper
+ *
+ * if ((krb5rc = krb5_rd_req(krb5context, &krb5auth_context,
+ * &krb5in_data, krb5server, krb5keytab,
+ * &ap_option, &krb5ticket)) != 0) { Error }
+ */
+
+ p = (unsigned char *)indata->data;
+ if ((asn1ticket = (KRB5_TKTBODY *)d2i_KRB5_TICKET(NULL, &p,
+ (long)indata->length))
+ == NULL) {
+ BIO_snprintf(kssl_err->text, KSSL_ERR_MAX,
+ "d2i_KRB5_TICKET() ASN.1 decode failure.\n");
+ kssl_err->reason = SSL_R_KRB5_S_RD_REQ;
+ goto err;
+ }
+
+ /*
+ * Was: krb5rc = krb5_decode_ticket(krb5in_data,&krb5ticket)) != 0)
+ */
+ if ((krb5rc = kssl_TKT2tkt(krb5context, asn1ticket, &krb5ticket,
+ kssl_err)) != 0) {
+ BIO_snprintf(kssl_err->text, KSSL_ERR_MAX,
+ "Error converting ASN.1 ticket to krb5_ticket.\n");
+ kssl_err->reason = SSL_R_KRB5_S_RD_REQ;
+ goto err;
+ }
+
+ if (!krb5_principal_compare(krb5context, krb5server, krb5ticket->server)) {
+ krb5rc = KRB5_PRINC_NOMATCH;
+ BIO_snprintf(kssl_err->text, KSSL_ERR_MAX,
+ "server principal != ticket principal\n");
+ kssl_err->reason = SSL_R_KRB5_S_RD_REQ;
+ goto err;
+ }
+ if ((krb5rc = krb5_kt_get_entry(krb5context, krb5keytab,
+ krb5ticket->server,
+ krb5ticket->enc_part.kvno,
+ krb5ticket->enc_part.enctype,
+ &kt_entry)) != 0) {
+ BIO_snprintf(kssl_err->text, KSSL_ERR_MAX,
+ "krb5_kt_get_entry() fails with %x.\n", krb5rc);
+ kssl_err->reason = SSL_R_KRB5_S_RD_REQ;
+ goto err;
+ }
+ if ((krb5rc = krb5_decrypt_tkt_part(krb5context, &kt_entry.key,
+ krb5ticket)) != 0) {
+ BIO_snprintf(kssl_err->text, KSSL_ERR_MAX,
+ "krb5_decrypt_tkt_part() failed.\n");
+ kssl_err->reason = SSL_R_KRB5_S_RD_REQ;
+ goto err;
+ } else {
+ krb5_kt_free_entry(krb5context, &kt_entry);
+# ifdef KSSL_DEBUG
+ {
+ int i;
+ krb5_address **paddr = krb5ticket->enc_part2->caddrs;
+ fprintf(stderr, "Decrypted ticket fields:\n");
+ fprintf(stderr, "\tflags: %X, transit-type: %X",
+ krb5ticket->enc_part2->flags,
+ krb5ticket->enc_part2->transited.tr_type);
+ print_krb5_data("\ttransit-data: ",
+ &(krb5ticket->enc_part2->transited.tr_contents));
+ fprintf(stderr, "\tcaddrs: %p, authdata: %p\n",
+ krb5ticket->enc_part2->caddrs,
+ krb5ticket->enc_part2->authorization_data);
+ if (paddr) {
+ fprintf(stderr, "\tcaddrs:\n");
+ for (i = 0; paddr[i] != NULL; i++) {
+ krb5_data d;
+ d.length = paddr[i]->length;
+ d.data = paddr[i]->contents;
+ print_krb5_data("\t\tIP: ", &d);
+ }
+ }
+ fprintf(stderr, "\tstart/auth/end times: %d / %d / %d\n",
+ krb5ticket->enc_part2->times.starttime,
+ krb5ticket->enc_part2->times.authtime,
+ krb5ticket->enc_part2->times.endtime);
+ }
+# endif /* KSSL_DEBUG */
+ }
+
+ krb5rc = KRB5_NO_TKT_SUPPLIED;
+ if (!krb5ticket || !krb5ticket->enc_part2 ||
+ !krb5ticket->enc_part2->client ||
+ !krb5ticket->enc_part2->client->data ||
+ !krb5ticket->enc_part2->session) {
+ kssl_err_set(kssl_err, SSL_R_KRB5_S_BAD_TICKET,
+ "bad ticket from krb5_rd_req.\n");
+ } else if (kssl_ctx_setprinc(kssl_ctx, KSSL_CLIENT,
+ &krb5ticket->enc_part2->client->realm,
+ krb5ticket->enc_part2->client->data,
+ krb5ticket->enc_part2->client->length)) {
+ kssl_err_set(kssl_err, SSL_R_KRB5_S_BAD_TICKET,
+ "kssl_ctx_setprinc() fails.\n");
+ } else if (kssl_ctx_setkey(kssl_ctx, krb5ticket->enc_part2->session)) {
+ kssl_err_set(kssl_err, SSL_R_KRB5_S_BAD_TICKET,
+ "kssl_ctx_setkey() fails.\n");
+ } else if (krb5ticket->enc_part2->flags & TKT_FLG_INVALID) {
+ krb5rc = KRB5KRB_AP_ERR_TKT_INVALID;
+ kssl_err_set(kssl_err, SSL_R_KRB5_S_BAD_TICKET,
+ "invalid ticket from krb5_rd_req.\n");
+ } else
+ krb5rc = 0;
+
+ kssl_ctx->enctype = krb5ticket->enc_part.enctype;
+ ttimes->authtime = krb5ticket->enc_part2->times.authtime;
+ ttimes->starttime = krb5ticket->enc_part2->times.starttime;
+ ttimes->endtime = krb5ticket->enc_part2->times.endtime;
+ ttimes->renew_till = krb5ticket->enc_part2->times.renew_till;
+
+ err:
+# ifdef KSSL_DEBUG
+ kssl_ctx_show(kssl_ctx);
+# endif /* KSSL_DEBUG */
+
+ if (asn1ticket)
+ KRB5_TICKET_free((KRB5_TICKET *) asn1ticket);
+ if (krb5keytab)
+ krb5_kt_close(krb5context, krb5keytab);
+ if (krb5ticket)
+ krb5_free_ticket(krb5context, krb5ticket);
+ if (krb5server)
+ krb5_free_principal(krb5context, krb5server);
+ return (krb5rc);
+}
+
+/*
+ * Allocate & return a new kssl_ctx struct.
+ */
+KSSL_CTX *kssl_ctx_new(void)
+{
+ return ((KSSL_CTX *)kssl_calloc(1, sizeof(KSSL_CTX)));
+}
+
+/*
+ * Frees a kssl_ctx struct and any allocated memory it holds. Returns NULL.
+ */
+KSSL_CTX *kssl_ctx_free(KSSL_CTX *kssl_ctx)
+{
+ if (kssl_ctx == NULL)
+ return kssl_ctx;
+
+ if (kssl_ctx->key)
+ OPENSSL_cleanse(kssl_ctx->key, kssl_ctx->length);
+ if (kssl_ctx->key)
+ kssl_free(kssl_ctx->key);
+ if (kssl_ctx->client_princ)
+ kssl_free(kssl_ctx->client_princ);
+ if (kssl_ctx->service_host)
+ kssl_free(kssl_ctx->service_host);
+ if (kssl_ctx->service_name)
+ kssl_free(kssl_ctx->service_name);
+ if (kssl_ctx->keytab_file)
+ kssl_free(kssl_ctx->keytab_file);
+
+ kssl_free(kssl_ctx);
+ return (KSSL_CTX *)NULL;
+}
+
+/*
+ * Given an array of (krb5_data *) entity (and optional realm), set the plain
+ * (char *) client_princ or service_host member of the kssl_ctx struct.
+ */
+krb5_error_code
+kssl_ctx_setprinc(KSSL_CTX *kssl_ctx, int which,
+ krb5_data *realm, krb5_data *entity, int nentities)
+{
+ char **princ;
+ int length;
+ int i;
+
+ if (kssl_ctx == NULL || entity == NULL)
+ return KSSL_CTX_ERR;
+
+ switch (which) {
+ case KSSL_CLIENT:
+ princ = &kssl_ctx->client_princ;
+ break;
+ case KSSL_SERVER:
+ princ = &kssl_ctx->service_host;
+ break;
+ default:
+ return KSSL_CTX_ERR;
+ break;
+ }
+ if (*princ)
+ kssl_free(*princ);
+
+ /* Add up all the entity->lengths */
+ length = 0;
+ for (i = 0; i < nentities; i++) {
+ length += entity[i].length;
+ }
+ /* Add in space for the '/' character(s) (if any) */
+ length += nentities - 1;
+ /* Space for the ('@'+realm+NULL | NULL) */
+ length += ((realm) ? realm->length + 2 : 1);
+
+ if ((*princ = kssl_calloc(1, length)) == NULL)
+ return KSSL_CTX_ERR;
+ else {
+ for (i = 0; i < nentities; i++) {
+ strncat(*princ, entity[i].data, entity[i].length);
+ if (i < nentities - 1) {
+ strcat(*princ, "/");
+ }
+ }
+ if (realm) {
+ strcat(*princ, "@");
+ (void)strncat(*princ, realm->data, realm->length);
+ }
+ }
+
+ return KSSL_CTX_OK;
+}
+
+/*- Set one of the plain (char *) string members of the kssl_ctx struct.
+ * Default values should be:
+ * which == KSSL_SERVICE => "khost" (KRB5SVC)
+ * which == KSSL_KEYTAB => "/etc/krb5.keytab" (KRB5KEYTAB)
+ */
+krb5_error_code kssl_ctx_setstring(KSSL_CTX *kssl_ctx, int which, char *text)
+{
+ char **string;
+
+ if (!kssl_ctx)
+ return KSSL_CTX_ERR;
+
+ switch (which) {
+ case KSSL_SERVICE:
+ string = &kssl_ctx->service_name;
+ break;
+ case KSSL_SERVER:
+ string = &kssl_ctx->service_host;
+ break;
+ case KSSL_CLIENT:
+ string = &kssl_ctx->client_princ;
+ break;
+ case KSSL_KEYTAB:
+ string = &kssl_ctx->keytab_file;
+ break;
+ default:
+ return KSSL_CTX_ERR;
+ break;
+ }
+ if (*string)
+ kssl_free(*string);
+
+ if (!text) {
+ *string = '\0';
+ return KSSL_CTX_OK;
+ }
+
+ if ((*string = kssl_calloc(1, strlen(text) + 1)) == NULL)
+ return KSSL_CTX_ERR;
+ else
+ strcpy(*string, text);
+
+ return KSSL_CTX_OK;
+}
+
+/*
+ * Copy the Kerberos session key from a (krb5_keyblock *) to a kssl_ctx
+ * struct. Clear kssl_ctx->key if Kerberos session key is NULL.
+ */
+krb5_error_code kssl_ctx_setkey(KSSL_CTX *kssl_ctx, krb5_keyblock *session)
+{
+ int length;
+ krb5_enctype enctype;
+ krb5_octet FAR *contents = NULL;
+
+ if (!kssl_ctx)
+ return KSSL_CTX_ERR;
+
+ if (kssl_ctx->key) {
+ OPENSSL_cleanse(kssl_ctx->key, kssl_ctx->length);
+ kssl_free(kssl_ctx->key);
+ }
+
+ if (session) {
+
+# ifdef KRB5_HEIMDAL
+ length = session->keyvalue->length;
+ enctype = session->keytype;
+ contents = session->keyvalue->contents;
+# else
+ length = session->length;
+ enctype = session->enctype;
+ contents = session->contents;
+# endif
+ kssl_ctx->enctype = enctype;
+ kssl_ctx->length = length;
+ } else {
+ kssl_ctx->enctype = ENCTYPE_UNKNOWN;
+ kssl_ctx->length = 0;
+ return KSSL_CTX_OK;
+ }
+
+ if ((kssl_ctx->key =
+ (krb5_octet FAR *)kssl_calloc(1, kssl_ctx->length)) == NULL) {
+ kssl_ctx->length = 0;
+ return KSSL_CTX_ERR;
+ } else
+ memcpy(kssl_ctx->key, contents, length);
+
+ return KSSL_CTX_OK;
+}
+
+/*
+ * Display contents of kssl_ctx struct
+ */
+void kssl_ctx_show(KSSL_CTX *kssl_ctx)
+{
+ int i;
+
+ printf("kssl_ctx: ");
+ if (kssl_ctx == NULL) {
+ printf("NULL\n");
+ return;
+ } else
+ printf("%p\n", (void *)kssl_ctx);
+
+ printf("\tservice:\t%s\n",
+ (kssl_ctx->service_name) ? kssl_ctx->service_name : "NULL");
+ printf("\tclient:\t%s\n",
+ (kssl_ctx->client_princ) ? kssl_ctx->client_princ : "NULL");
+ printf("\tserver:\t%s\n",
+ (kssl_ctx->service_host) ? kssl_ctx->service_host : "NULL");
+ printf("\tkeytab:\t%s\n",
+ (kssl_ctx->keytab_file) ? kssl_ctx->keytab_file : "NULL");
+ printf("\tkey [%d:%d]:\t", kssl_ctx->enctype, kssl_ctx->length);
+
+ for (i = 0; i < kssl_ctx->length && kssl_ctx->key; i++) {
+ printf("%02x", kssl_ctx->key[i]);
+ }
+ printf("\n");
+ return;
+}
+
+int kssl_keytab_is_available(KSSL_CTX *kssl_ctx)
+{
+ krb5_context krb5context = NULL;
+ krb5_keytab krb5keytab = NULL;
+ krb5_keytab_entry entry;
+ krb5_principal princ = NULL;
+ krb5_error_code krb5rc = KRB5KRB_ERR_GENERIC;
+ int rc = 0;
+
+ if ((krb5rc = krb5_init_context(&krb5context)))
+ return (0);
+
+ /*
+ * kssl_ctx->keytab_file == NULL ==> use Kerberos default
+ */
+ if (kssl_ctx->keytab_file) {
+ krb5rc = krb5_kt_resolve(krb5context, kssl_ctx->keytab_file,
+ &krb5keytab);
+ if (krb5rc)
+ goto exit;
+ } else {
+ krb5rc = krb5_kt_default(krb5context, &krb5keytab);
+ if (krb5rc)
+ goto exit;
+ }
+
+ /* the host key we are looking for */
+ krb5rc = krb5_sname_to_principal(krb5context, NULL,
+ kssl_ctx->
+ service_name ? kssl_ctx->service_name :
+ KRB5SVC, KRB5_NT_SRV_HST, &princ);
+
+ if (krb5rc)
+ goto exit;
+
+ krb5rc = krb5_kt_get_entry(krb5context, krb5keytab, princ,
+ /* IGNORE_VNO */
+ 0,
+ /* IGNORE_ENCTYPE */
+ 0, &entry);
+ if (krb5rc == KRB5_KT_NOTFOUND) {
+ rc = 1;
+ goto exit;
+ } else if (krb5rc)
+ goto exit;
+
+ krb5_kt_free_entry(krb5context, &entry);
+ rc = 1;
+
+ exit:
+ if (krb5keytab)
+ krb5_kt_close(krb5context, krb5keytab);
+ if (princ)
+ krb5_free_principal(krb5context, princ);
+ if (krb5context)
+ krb5_free_context(krb5context);
+ return (rc);
+}
+
+int kssl_tgt_is_available(KSSL_CTX *kssl_ctx)
+{
+ krb5_error_code krb5rc = KRB5KRB_ERR_GENERIC;
+ krb5_context krb5context = NULL;
+ krb5_ccache krb5ccdef = NULL;
+ krb5_creds krb5creds, *krb5credsp = NULL;
+ int rc = 0;
+
+ memset((char *)&krb5creds, 0, sizeof(krb5creds));
+
+ if (!kssl_ctx)
+ return (0);
+
+ if (!kssl_ctx->service_host)
+ return (0);
+
+ if ((krb5rc = krb5_init_context(&krb5context)) != 0)
+ goto err;
+
+ if ((krb5rc = krb5_sname_to_principal(krb5context,
+ kssl_ctx->service_host,
+ (kssl_ctx->service_name) ?
+ kssl_ctx->service_name : KRB5SVC,
+ KRB5_NT_SRV_HST,
+ &krb5creds.server)) != 0)
+ goto err;
+
+ if ((krb5rc = krb5_cc_default(krb5context, &krb5ccdef)) != 0)
+ goto err;
+
+ if ((krb5rc = krb5_cc_get_principal(krb5context, krb5ccdef,
+ &krb5creds.client)) != 0)
+ goto err;
+
+ if ((krb5rc = krb5_get_credentials(krb5context, 0, krb5ccdef,
+ &krb5creds, &krb5credsp)) != 0)
+ goto err;
+
+ rc = 1;
+
+ err:
+# ifdef KSSL_DEBUG
+ kssl_ctx_show(kssl_ctx);
+# endif /* KSSL_DEBUG */
+
+ if (krb5creds.client)
+ krb5_free_principal(krb5context, krb5creds.client);
+ if (krb5creds.server)
+ krb5_free_principal(krb5context, krb5creds.server);
+ if (krb5context)
+ krb5_free_context(krb5context);
+ return (rc);
+}
+
+# if !defined(OPENSSL_SYS_WINDOWS) && !defined(OPENSSL_SYS_WIN32)
+void kssl_krb5_free_data_contents(krb5_context context, krb5_data *data)
+{
+# ifdef KRB5_HEIMDAL
+ data->length = 0;
+ if (data->data)
+ free(data->data);
+# elif defined(KRB5_MIT_OLD11)
+ if (data->data) {
+ krb5_xfree(data->data);
+ data->data = 0;
+ }
+# else
+ krb5_free_data_contents(NULL, data);
+# endif
+}
+# endif
+/* !OPENSSL_SYS_WINDOWS && !OPENSSL_SYS_WIN32 */
+
+/*
+ * Given pointers to KerberosTime and struct tm structs, convert the
+ * KerberosTime string to struct tm. Note that KerberosTime is a
+ * ASN1_GENERALIZEDTIME value, constrained to GMT with no fractional seconds
+ * as defined in RFC 1510. Return pointer to the (partially) filled in
+ * struct tm on success, return NULL on failure.
+ */
+static struct tm *k_gmtime(ASN1_GENERALIZEDTIME *gtime, struct tm *k_tm)
+{
+ char c, *p;
+
+ if (!k_tm)
+ return NULL;
+ if (gtime == NULL || gtime->length < 14)
+ return NULL;
+ if (gtime->data == NULL)
+ return NULL;
+
+ p = (char *)&gtime->data[14];
+
+ c = *p;
+ *p = '\0';
+ p -= 2;
+ k_tm->tm_sec = atoi(p);
+ *(p + 2) = c;
+ c = *p;
+ *p = '\0';
+ p -= 2;
+ k_tm->tm_min = atoi(p);
+ *(p + 2) = c;
+ c = *p;
+ *p = '\0';
+ p -= 2;
+ k_tm->tm_hour = atoi(p);
+ *(p + 2) = c;
+ c = *p;
+ *p = '\0';
+ p -= 2;
+ k_tm->tm_mday = atoi(p);
+ *(p + 2) = c;
+ c = *p;
+ *p = '\0';
+ p -= 2;
+ k_tm->tm_mon = atoi(p) - 1;
+ *(p + 2) = c;
+ c = *p;
+ *p = '\0';
+ p -= 4;
+ k_tm->tm_year = atoi(p) - 1900;
+ *(p + 4) = c;
+
+ return k_tm;
+}
+
+/*
+ * Helper function for kssl_validate_times(). We need context->clockskew,
+ * but krb5_context is an opaque struct. So we try to sneek the clockskew
+ * out through the replay cache. If that fails just return a likely default
+ * (300 seconds).
+ */
+static krb5_deltat get_rc_clockskew(krb5_context context)
+{
+ krb5_rcache rc;
+ krb5_deltat clockskew;
+
+ if (krb5_rc_default(context, &rc))
+ return KSSL_CLOCKSKEW;
+ if (krb5_rc_initialize(context, rc, 0))
+ return KSSL_CLOCKSKEW;
+ if (krb5_rc_get_lifespan(context, rc, &clockskew)) {
+ clockskew = KSSL_CLOCKSKEW;
+ }
+ (void)krb5_rc_destroy(context, rc);
+ return clockskew;
+}
+
+/*
+ * kssl_validate_times() combines (and more importantly exposes) the MIT KRB5
+ * internal function krb5_validate_times() and the in_clock_skew() macro.
+ * The authenticator client time is checked to be within clockskew secs of
+ * the current time and the current time is checked to be within the ticket
+ * start and expire times. Either check may be omitted by supplying a NULL
+ * value. Returns 0 for valid times, SSL_R_KRB5* error codes otherwise. See
+ * Also: (Kerberos source)/krb5/lib/krb5/krb/valid_times.c 20010420 VRS
+ */
+krb5_error_code kssl_validate_times(krb5_timestamp atime,
+ krb5_ticket_times *ttimes)
+{
+ krb5_deltat skew;
+ krb5_timestamp start, now;
+ krb5_error_code rc;
+ krb5_context context;
+
+ if ((rc = krb5_init_context(&context)))
+ return SSL_R_KRB5_S_BAD_TICKET;
+ skew = get_rc_clockskew(context);
+ if ((rc = krb5_timeofday(context, &now)))
+ return SSL_R_KRB5_S_BAD_TICKET;
+ krb5_free_context(context);
+
+ if (atime && labs(atime - now) >= skew)
+ return SSL_R_KRB5_S_TKT_SKEW;
+
+ if (!ttimes)
+ return 0;
+
+ start = (ttimes->starttime != 0) ? ttimes->starttime : ttimes->authtime;
+ if (start - now > skew)
+ return SSL_R_KRB5_S_TKT_NYV;
+ if ((now - ttimes->endtime) > skew)
+ return SSL_R_KRB5_S_TKT_EXPIRED;
+
+# ifdef KSSL_DEBUG
+ fprintf(stderr, "kssl_validate_times: %d |<- | %d - %d | < %d ->| %d\n",
+ start, atime, now, skew, ttimes->endtime);
+# endif /* KSSL_DEBUG */
+
+ return 0;
+}
+
+/*
+ * Decode and decrypt given DER-encoded authenticator, then pass
+ * authenticator ctime back in *atimep (or 0 if time unavailable). Returns
+ * krb5_error_code and kssl_err on error. A NULL authenticator
+ * (authentp->length == 0) is not considered an error. Note that
+ * kssl_check_authent() makes use of the KRB5 session key; you must call
+ * kssl_sget_tkt() to get the key before calling this routine.
+ */
+krb5_error_code kssl_check_authent(
+ /*
+ * IN
+ */ KSSL_CTX *kssl_ctx,
+ /*
+ * IN
+ */ krb5_data *authentp,
+ /*
+ * OUT
+ */ krb5_timestamp *atimep,
+ /*
+ * OUT
+ */ KSSL_ERR *kssl_err)
+{
+ krb5_error_code krb5rc = 0;
+ KRB5_ENCDATA *dec_authent = NULL;
+ KRB5_AUTHENTBODY *auth = NULL;
+ krb5_enctype enctype;
+ EVP_CIPHER_CTX ciph_ctx;
+ const EVP_CIPHER *enc = NULL;
+ unsigned char iv[EVP_MAX_IV_LENGTH];
+ const unsigned char *p;
+ unsigned char *unenc_authent;
+ int outl, unencbufsize;
+ struct tm tm_time, *tm_l, *tm_g;
+ time_t now, tl, tg, tr, tz_offset;
+
+ EVP_CIPHER_CTX_init(&ciph_ctx);
+ *atimep = 0;
+ kssl_err_set(kssl_err, 0, "");
+
+# ifndef KRB5CHECKAUTH
+ authentp = NULL;
+# else
+# if KRB5CHECKAUTH == 0
+ authentp = NULL;
+# endif
+# endif /* KRB5CHECKAUTH */
+
+ if (authentp == NULL || authentp->length == 0)
+ return 0;
+
+# ifdef KSSL_DEBUG
+ {
+ unsigned int ui;
+ fprintf(stderr, "kssl_check_authent: authenticator[%d]:\n",
+ authentp->length);
+ p = authentp->data;
+ for (ui = 0; ui < authentp->length; ui++)
+ fprintf(stderr, "%02x ", p[ui]);
+ fprintf(stderr, "\n");
+ }
+# endif /* KSSL_DEBUG */
+
+ unencbufsize = 2 * authentp->length;
+ if ((unenc_authent = calloc(1, unencbufsize)) == NULL) {
+ kssl_err_set(kssl_err, SSL_R_KRB5_S_INIT,
+ "Unable to allocate authenticator buffer.\n");
+ krb5rc = KRB5KRB_ERR_GENERIC;
+ goto err;
+ }
+
+ p = (unsigned char *)authentp->data;
+ if ((dec_authent = d2i_KRB5_ENCDATA(NULL, &p,
+ (long)authentp->length)) == NULL) {
+ kssl_err_set(kssl_err, SSL_R_KRB5_S_INIT,
+ "Error decoding authenticator.\n");
+ krb5rc = KRB5KRB_AP_ERR_BAD_INTEGRITY;
+ goto err;
+ }
+
+ enctype = dec_authent->etype->data[0]; /* should = kssl_ctx->enctype */
+# if !defined(KRB5_MIT_OLD11)
+ switch (enctype) {
+ case ENCTYPE_DES3_CBC_SHA1: /* EVP_des_ede3_cbc(); */
+ case ENCTYPE_DES3_CBC_SHA:
+ case ENCTYPE_DES3_CBC_RAW:
+ krb5rc = 0; /* Skip, can't handle derived keys */
+ goto err;
+ }
+# endif
+ enc = kssl_map_enc(enctype);
+ memset(iv, 0, sizeof iv); /* per RFC 1510 */
+
+ if (enc == NULL) {
+ /*
+ * Disable kssl_check_authent for ENCTYPE_DES3_CBC_SHA1. This
+ * enctype indicates the authenticator was encrypted using key-usage
+ * derived keys which openssl cannot decrypt.
+ */
+ goto err;
+ }
+
+ if (!EVP_CipherInit(&ciph_ctx, enc, kssl_ctx->key, iv, 0)) {
+ kssl_err_set(kssl_err, SSL_R_KRB5_S_INIT,
+ "EVP_CipherInit error decrypting authenticator.\n");
+ krb5rc = KRB5KRB_AP_ERR_BAD_INTEGRITY;
+ goto err;
+ }
+ outl = dec_authent->cipher->length;
+ if (!EVP_Cipher
+ (&ciph_ctx, unenc_authent, dec_authent->cipher->data, outl)) {
+ kssl_err_set(kssl_err, SSL_R_KRB5_S_INIT,
+ "EVP_Cipher error decrypting authenticator.\n");
+ krb5rc = KRB5KRB_AP_ERR_BAD_INTEGRITY;
+ goto err;
+ }
+ EVP_CIPHER_CTX_cleanup(&ciph_ctx);
+
+# ifdef KSSL_DEBUG
+ {
+ int padl;
+ fprintf(stderr, "kssl_check_authent: decrypted authenticator[%d] =\n",
+ outl);
+ for (padl = 0; padl < outl; padl++)
+ fprintf(stderr, "%02x ", unenc_authent[padl]);
+ fprintf(stderr, "\n");
+ }
+# endif /* KSSL_DEBUG */
+
+ if ((p = kssl_skip_confound(enctype, unenc_authent)) == NULL) {
+ kssl_err_set(kssl_err, SSL_R_KRB5_S_INIT,
+ "confounded by authenticator.\n");
+ krb5rc = KRB5KRB_AP_ERR_BAD_INTEGRITY;
+ goto err;
+ }
+ outl -= p - unenc_authent;
+
+ if ((auth = (KRB5_AUTHENTBODY *)d2i_KRB5_AUTHENT(NULL, &p,
+ (long)outl)) == NULL) {
+ kssl_err_set(kssl_err, SSL_R_KRB5_S_INIT,
+ "Error decoding authenticator body.\n");
+ krb5rc = KRB5KRB_AP_ERR_BAD_INTEGRITY;
+ goto err;
+ }
+
+ memset(&tm_time, 0, sizeof(struct tm));
+ if (k_gmtime(auth->ctime, &tm_time) &&
+ ((tr = mktime(&tm_time)) != (time_t)(-1))) {
+ now = time(&now);
+ tm_l = localtime(&now);
+ tl = mktime(tm_l);
+ tm_g = gmtime(&now);
+ tg = mktime(tm_g);
+ tz_offset = tg - tl;
+
+ *atimep = (krb5_timestamp)(tr - tz_offset);
+ }
+# ifdef KSSL_DEBUG
+ fprintf(stderr, "kssl_check_authent: returns %d for client time ",
+ *atimep);
+ if (auth && auth->ctime && auth->ctime->length && auth->ctime->data)
+ fprintf(stderr, "%.*s\n", auth->ctime->length, auth->ctime->data);
+ else
+ fprintf(stderr, "NULL\n");
+# endif /* KSSL_DEBUG */
+
+ err:
+ if (auth)
+ KRB5_AUTHENT_free((KRB5_AUTHENT *) auth);
+ if (dec_authent)
+ KRB5_ENCDATA_free(dec_authent);
+ if (unenc_authent)
+ free(unenc_authent);
+ EVP_CIPHER_CTX_cleanup(&ciph_ctx);
+ return krb5rc;
+}
+
+/*
+ * Replaces krb5_build_principal_ext(), with varargs length == 2 (svc, host),
+ * because I don't know how to stub varargs. Returns krb5_error_code ==
+ * ENOMEM on alloc error, otherwise passes back newly constructed principal,
+ * which should be freed by caller.
+ */
+krb5_error_code kssl_build_principal_2(
+ /*
+ * UPDATE
+ */ krb5_context context,
+ /*
+ * OUT
+ */ krb5_principal *princ,
+ /*
+ * IN
+ */ int rlen, const char *realm,
+ /*
+ * IN
+ */ int slen, const char *svc,
+ /*
+ * IN
+ */ int hlen, const char *host)
+{
+ krb5_data *p_data = NULL;
+ krb5_principal new_p = NULL;
+ char *new_r = NULL;
+
+ if ((p_data = (krb5_data *)calloc(2, sizeof(krb5_data))) == NULL ||
+ (new_p = (krb5_principal)calloc(1, sizeof(krb5_principal_data)))
+ == NULL)
+ goto err;
+ new_p->length = 2;
+ new_p->data = p_data;
+
+ if ((new_r = calloc(1, rlen + 1)) == NULL)
+ goto err;
+ memcpy(new_r, realm, rlen);
+ krb5_princ_set_realm_length(context, new_p, rlen);
+ krb5_princ_set_realm_data(context, new_p, new_r);
+
+ if ((new_p->data[0].data = calloc(1, slen + 1)) == NULL)
+ goto err;
+ memcpy(new_p->data[0].data, svc, slen);
+ new_p->data[0].length = slen;
+
+ if ((new_p->data[1].data = calloc(1, hlen + 1)) == NULL)
+ goto err;
+ memcpy(new_p->data[1].data, host, hlen);
+ new_p->data[1].length = hlen;
+
+ krb5_princ_type(context, new_p) = KRB5_NT_UNKNOWN;
+ *princ = new_p;
+ return 0;
+
+ err:
+ if (new_p && new_p[0].data)
+ free(new_p[0].data);
+ if (new_p && new_p[1].data)
+ free(new_p[1].data);
+ if (new_p)
+ free(new_p);
+ if (new_r)
+ free(new_r);
+ return ENOMEM;
+}
+
+void SSL_set0_kssl_ctx(SSL *s, KSSL_CTX *kctx)
+{
+ s->kssl_ctx = kctx;
+}
+
+KSSL_CTX *SSL_get0_kssl_ctx(SSL *s)
+{
+ return s->kssl_ctx;
+}
+
+char *kssl_ctx_get0_client_princ(KSSL_CTX *kctx)
+{
+ if (kctx)
+ return kctx->client_princ;
+ return NULL;
+}
+
+#else /* !OPENSSL_NO_KRB5 */
+
+# if defined(PEDANTIC) || defined(OPENSSL_SYS_VMS)
+static void *dummy = &dummy;
+# endif
+
+#endif /* !OPENSSL_NO_KRB5 */
generated by cgit v1.2.3 (git 2.25.1) at 2025-03-21 19:55:37 +0000