Add a general user interface API. This is designed to replace things

like des_read_password and friends (backward compatibility functions
using this new API are provided).  The purpose is to remove prompting
functions from the DES code section as well as provide for prompting
through dialog boxes in a window system and the like.

7 files changed, 1758 insertions, 0 deletions

diff --git a/crypto/ui/Makefile.ssl b/crypto/ui/Makefile.ssl
new file mode 100644
index 0000000000..21221555f4
--- /dev/null
+++ b/crypto/ui/Makefile.ssl
@@ -0,0 +1,109 @@
+#
+# OpenSSL/crypto/ui/Makefile
+#
+
+DIR=	ui
+TOP=	../..
+CC=	cc
+INCLUDES= -I.. -I$(TOP) -I../../include
+CFLAG=-g
+INSTALL_PREFIX=
+OPENSSLDIR=     /usr/local/ssl
+INSTALLTOP=/usr/local/ssl
+MAKE=		make -f Makefile.ssl
+MAKEDEPPROG=	makedepend
+MAKEDEPEND=	$(TOP)/util/domd $(TOP) -MD $(MAKEDEPPROG)
+MAKEFILE=	Makefile.ssl
+AR=		ar r
+
+CFLAGS= $(INCLUDES) $(CFLAG)
+
+GENERAL=Makefile
+TEST= uitest.c
+APPS=
+
+COMPATSRC= ui_compat.c
+COMPATOBJ= ui_compat.o
+
+LIB=$(TOP)/libcrypto.a
+LIBSRC= ui_err.c ui_lib.c ui_openssl.c $(COMPATSRC)
+LIBOBJ= ui_err.o ui_lib.o ui_openssl.o $(COMPATOBJ)
+
+SRC= $(LIBSRC)
+
+EXHEADER= ui.h
+HEADER=	$(EXHEADER) ui_locl.h
+
+ALL=    $(GENERAL) $(SRC) $(HEADER)
+
+top:
+	(cd ../..; $(MAKE) DIRS=crypto SDIRS=$(DIR) sub_all)
+
+all:	lib
+
+lib:	$(LIBOBJ)
+	$(AR) $(LIB) $(LIBOBJ)
+	$(RANLIB) $(LIB)
+	@touch lib
+
+files:
+	$(PERL) $(TOP)/util/files.pl Makefile.ssl >> $(TOP)/MINFO
+
+links:
+	@$(TOP)/util/point.sh Makefile.ssl Makefile
+	@$(PERL) $(TOP)/util/mklink.pl ../../include/openssl $(EXHEADER)
+	@$(PERL) $(TOP)/util/mklink.pl ../../test $(TEST)
+	@$(PERL) $(TOP)/util/mklink.pl ../../apps $(APPS)
+
+install:
+	@for i in $(EXHEADER) ; \
+	do  \
+	(cp $$i $(INSTALL_PREFIX)$(INSTALLTOP)/include/openssl/$$i; \
+	chmod 644 $(INSTALL_PREFIX)$(INSTALLTOP)/include/openssl/$$i ); \
+	done;
+
+tags:
+	ctags $(SRC)
+
+tests:
+
+lint:
+	lint -DLINT $(INCLUDES) $(SRC)>fluff
+
+depend:
+	$(MAKEDEPEND) $(INCLUDES) $(DEPFLAG) $(PROGS) $(LIBSRC)
+
+dclean:
+	$(PERL) -pe 'if (/^# DO NOT DELETE THIS LINE/) {print; exit(0);}' $(MAKEFILE) >Makefile.new
+	mv -f Makefile.new $(MAKEFILE)
+
+clean:
+	rm -f *.o */*.o *.obj lib tags core .pure .nfs* *.old *.bak fluff
+
+# DO NOT DELETE THIS LINE -- make depend depends on it.
+
+ui_compat.o: ../../include/openssl/crypto.h ../../include/openssl/des.h
+ui_compat.o: ../../include/openssl/e_os2.h ../../include/openssl/opensslconf.h
+ui_compat.o: ../../include/openssl/opensslv.h ../../include/openssl/safestack.h
+ui_compat.o: ../../include/openssl/stack.h ../../include/openssl/symhacks.h
+ui_compat.o: ../../include/openssl/ui.h ui_compat.c
+ui_err.o: ../../include/openssl/bio.h ../../include/openssl/crypto.h
+ui_err.o: ../../include/openssl/e_os2.h ../../include/openssl/err.h
+ui_err.o: ../../include/openssl/lhash.h ../../include/openssl/opensslconf.h
+ui_err.o: ../../include/openssl/opensslv.h ../../include/openssl/safestack.h
+ui_err.o: ../../include/openssl/stack.h ../../include/openssl/symhacks.h
+ui_err.o: ../../include/openssl/ui.h ui_err.c
+ui_lib.o: ../../include/openssl/bio.h ../../include/openssl/crypto.h
+ui_lib.o: ../../include/openssl/e_os2.h ../../include/openssl/err.h
+ui_lib.o: ../../include/openssl/lhash.h ../../include/openssl/opensslconf.h
+ui_lib.o: ../../include/openssl/opensslv.h ../../include/openssl/safestack.h
+ui_lib.o: ../../include/openssl/stack.h ../../include/openssl/symhacks.h
+ui_lib.o: ../../include/openssl/ui.h ui_lib.c ui_locl.h
+ui_openssl.o: ../../e_os.h ../../include/openssl/bio.h
+ui_openssl.o: ../../include/openssl/buffer.h ../../include/openssl/crypto.h
+ui_openssl.o: ../../include/openssl/e_os2.h ../../include/openssl/err.h
+ui_openssl.o: ../../include/openssl/lhash.h ../../include/openssl/opensslconf.h
+ui_openssl.o: ../../include/openssl/opensslv.h
+ui_openssl.o: ../../include/openssl/safestack.h ../../include/openssl/stack.h
+ui_openssl.o: ../../include/openssl/symhacks.h ../../include/openssl/ui.h
+ui_openssl.o: ../cryptlib.h ui_locl.h ui_openssl.c
diff --git a/crypto/ui/ui.h b/crypto/ui/ui.h
new file mode 100644
index 0000000000..9a03e8a9ec
--- /dev/null
+++ b/crypto/ui/ui.h
@@ -0,0 +1,257 @@
+/* crypto/ui/ui.h -*- mode:C; c-file-style: "eay" -*- */
+/* Written by Richard Levitte (levitte@stacken.kth.se) for the OpenSSL
+ * project 2000.
+ */
+/* ====================================================================
+ * Copyright (c) 1998-2000 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
+ *    openssl-core@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).
+ *
+ */
+
+#ifndef HEADER_UI_H
+#define HEADER_UI_H
+
+#include <openssl/crypto.h>
+#include <openssl/safestack.h>
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+/* The UI type is a holder for a specific user interface session.  It can
+   contain an illimited number of informational or error strings as well
+   as things to prompt for, both passwords (noecho mode) and others (echo
+   mode), and verification of the same.  All of these are called strings,
+   and are further described below. */
+typedef struct ui_st UI;
+
+/* All instances of UI have a reference to a method structure, which is a
+   ordered vector of functions that implement the lower level things to do.
+   There is an instruction on the implementation further down, in the section
+   for method implementors. */
+typedef struct ui_method_st UI_METHOD;
+
+
+/* All the following functions return -1 or NULL on error.  When everything is
+   fine, they return 0, a positive value or a non-NULL pointer, all depending
+   on their purpose. */
+
+/* Creators and destructor.   */
+UI *UI_new(void);
+UI *UI_new_method(const UI_METHOD *method);
+void UI_free(UI *ui);
+
+/* The following functions are used to add strings to be printed and prompt
+   strings to prompt for data.  The names are UI_{add,dup}_<function>_string,
+   with the following meanings:
+	add	add a text or prompt string.  The pointers given to these
+		functions are used verbatim, no copying is done.
+	dup	make a copy of the text or prompt string, then add the copy
+		to the collection of strings in the user interface.
+	<function>
+		The function is a name for the functionality that the given
+		string shall be used for.  It can be one of:
+			input	use the string as data prompt.
+			verify	use the string as verification prompt.  This
+				is used to verify a previous input.
+			info	use the string for informational output.
+			error	use the string for error output.
+   Honestly, there's currently no difference between info and error for the
+   moment.
+
+   All of the functions in this group take a UI and a string.  The input and
+   verify addition functions also take an echo flag, a buffer for the result
+   to end up with, a minimum input size and a maximum input size (the result
+   buffer MUST be large enough to be able to contain the maximum number of
+   characters).  Additionally, the verify addition functions takes another
+   buffer to compare the result against.
+
+   On success, the all return an index of the added information.  That index
+   is usefull when retrieving results with UI_get0_result(). */
+int UI_add_input_string(UI *ui, const char *prompt, int echo_p,
+	char *result_buf, int minsize, int maxsize);
+int UI_dup_input_string(UI *ui, const char *prompt, int echo_p,
+	char *result_buf, int minsize, int maxsize);
+int UI_add_verify_string(UI *ui, const char *prompt, int echo_p,
+	char *result_buf, int minsize, int maxsize, const char *test_buf);
+int UI_dup_verify_string(UI *ui, const char *prompt, int echo_p,
+	char *result_buf, int minsize, int maxsize, const char *test_buf);
+int UI_add_info_string(UI *ui, const char *text);
+int UI_dup_info_string(UI *ui, const char *text);
+int UI_add_error_string(UI *ui, const char *text);
+int UI_dup_error_string(UI *ui, const char *text);
+
+/* Return the result associated with a prompt given with the index i. */
+const char *UI_get0_result(UI *ui, int i);
+
+/* When all strings have been added, process the whole thing. */
+int UI_process(UI *ui);
+
+/* Some methods may use extra data */
+#define UI_set_app_data(s,arg)         UI_set_ex_data(s,0,arg)
+#define UI_get_app_data(s)             UI_get_ex_data(s,0)
+int UI_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
+	CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func);
+int UI_set_ex_data(UI *r,int idx,void *arg);
+void *UI_get_ex_data(UI *r, int idx);
+
+/* Use specific methods instead of the built-in one */
+void UI_set_default_method(const UI_METHOD *meth);
+const UI_METHOD *UI_get_default_method(void);
+const UI_METHOD *UI_get_method(UI *ui);
+const UI_METHOD *UI_set_method(UI *ui, const UI_METHOD *meth);
+
+/* The method with all the built-in thingies */
+UI_METHOD *UI_OpenSSL(void);
+
+
+/* ---------- For method writers ---------- */
+/* A method contains a number of functions that implement the low level
+   of the User Interface.  The functions are:
+
+	an opener	This function starts a session, maybe by opening
+			a channel to a tty, or by opening a window.
+	a writer	This function is called to write a given string,
+			maybe to the tty, maybe as a field label in a
+			window.
+	a reader	This function is called to read a given prompt,
+			maybe from the tty, maybe from a field in a
+			window.  Note that it's called wth all string
+			structures, not only the prompt ones, so it must
+			check such things itself.
+	a closer	This function closes the session, maybe by closing
+			the channel to the tty, or closing the window.
+
+   The way this is used, the opener is first called, then the writer for all
+   strings, then the reader for all strings and finally the closer.  Note that
+   if you want to prompt from a terminal or other command line interface, the
+   best is to have the reader also write the prompts instead of having the
+   writer do it.
+   All method functions take a UI as argument.  Additionally, the writer and
+   the reader take a UI_STRING. */
+
+/* The UI_STRING type is the data structure that contains all the needed info
+   about a string or a prompt, including test data for a verification prompt.
+*/
+DECLARE_STACK_OF(UI_STRING)
+typedef struct ui_string_st UI_STRING;
+
+/* The different types of strings that are currently supported.
+   This is only needed by method authors. */
+enum UI_string_types
+	{
+	UI_NONE=0,
+	UI_STRING_ECHO,		/* Prompt for a string */
+	UI_STRING_NOECHO,	/* Prompt for a hidden string */
+	UI_VERIFY_ECHO,		/* Prompt for a string and verify */
+	UI_VERIFY_NOECHO,	/* Prompt for a hidden string and verify */
+	UI_INFO,		/* Send info to the user */
+	UI_ERROR		/* Send an error message to the user */
+	};
+
+/* Create and manipulate methods */
+UI_METHOD *UI_create_method(void);
+int UI_method_set_opener(UI_METHOD *method, int (*opener)(UI *ui));
+int UI_method_set_writer(UI_METHOD *method, int (*writer)(UI *ui, UI_STRING *uis));
+int UI_method_set_reader(UI_METHOD *method, int (*reader)(UI *ui, UI_STRING *uis));
+int UI_method_set_closer(UI_METHOD *method, int (*closer)(UI *ui));
+int (*UI_method_get_opener(UI_METHOD *method))(UI*);
+int (*UI_method_get_writer(UI_METHOD *method))(UI*,UI_STRING*);
+int (*UI_method_get_reader(UI_METHOD *method))(UI*,UI_STRING*);
+int (*UI_method_get_closer(UI_METHOD *method))(UI*);
+
+/* The following functions are helpers for method writers to access relevant
+   data from a UI_STRING. */
+
+/* Return type type of the UI_STRING */
+enum UI_string_types UI_get_string_type(UI_STRING *uis);
+/* Return the actual string to output (the prompt, info or error) */
+const char *UI_get0_output_string(UI_STRING *uis);
+/* Return the result of a prompt */
+const char *UI_get0_result_string(UI_STRING *uis);
+/* Return the string to test the result against.  Only useful with verifies. */
+const char *UI_get0_test_string(UI_STRING *uis);
+/* Return the required minimum size of the result */
+int UI_get_result_minsize(UI_STRING *uis);
+/* Return the required maximum size of the result */
+int UI_get_result_maxsize(UI_STRING *uis);
+/* Set the result of a UI_STRING. */
+int UI_set_result(UI_STRING *uis, char *result);
+
+
+/* BEGIN ERROR CODES */
+/* The following lines are auto generated by the script mkerr.pl. Any changes
+ * made after this point may be overwritten when the script is next run.
+ */
+void ERR_load_UI_strings(void);
+
+/* Error codes for the UI functions. */
+
+/* Function codes. */
+#define UI_F_GENERAL_ALLOCATE_STRING			 100
+#define UI_F_UI_DUP_ERROR_STRING			 101
+#define UI_F_UI_DUP_INFO_STRING				 102
+#define UI_F_UI_DUP_INPUT_STRING			 103
+#define UI_F_UI_DUP_VERIFY_STRING			 106
+#define UI_F_UI_GET0_RESULT				 107
+#define UI_F_UI_NEW_METHOD				 104
+#define UI_F_UI_SET_RESULT				 105
+
+/* Reason codes. */
+#define UI_R_INDEX_TOO_LARGE				 102
+#define UI_R_INDEX_TOO_SMALL				 103
+#define UI_R_RESULT_TOO_LARGE				 100
+#define UI_R_RESULT_TOO_SMALL				 101
+
+#ifdef  __cplusplus
+}
+#endif
+#endif
diff --git a/crypto/ui/ui_compat.c b/crypto/ui/ui_compat.c
new file mode 100644
index 0000000000..44392d70c2
--- /dev/null
+++ b/crypto/ui/ui_compat.c
@@ -0,0 +1,97 @@
+/* crypto/ui/ui_compat.c */ /* This was previously crypto/des/read2pwd.c */
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ * 
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ * 
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ * 
+ * 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 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 acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from 
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ * 
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS 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 AUTHOR OR 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.
+ * 
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+
+#include <openssl/des.h>
+#include <openssl/ui.h>
+
+int des_read_password(des_cblock *key, const char *prompt, int verify)
+	{
+	int ok;
+	char buf[BUFSIZ],buff[BUFSIZ];
+	UI *ui;
+
+	ui = UI_new();
+	UI_add_input_string(ui,prompt,0,buf,0,BUFSIZ-1);
+	if (verify)
+		UI_add_verify_string(ui,prompt,0,buff,0,BUFSIZ-1,buf);
+	if ((ok=UI_process(ui)) == 0)
+		des_string_to_key(buf,key);
+	UI_free(ui);
+	memset(buf,0,BUFSIZ);
+	memset(buff,0,BUFSIZ);
+	return(ok);
+	}
+
+int des_read_2passwords(des_cblock *key1, des_cblock *key2, const char *prompt,
+	     int verify)
+	{
+	int ok;
+	char buf[BUFSIZ],buff[BUFSIZ];
+	UI *ui;
+
+	ui = UI_new();
+	UI_add_input_string(ui,prompt,0,buf,0,BUFSIZ-1);
+	if (verify)
+		UI_add_verify_string(ui,prompt,0,buff,0,BUFSIZ-1,buf);
+	if ((ok=UI_process(ui)) == 0)
+		des_string_to_2keys(buf,key1,key2);
+	UI_free(ui);
+	memset(buf,0,BUFSIZ);
+	memset(buff,0,BUFSIZ);
+	return(ok);
+	}
diff --git a/crypto/ui/ui_err.c b/crypto/ui/ui_err.c
new file mode 100644
index 0000000000..ca50be6be4
--- /dev/null
+++ b/crypto/ui/ui_err.c
@@ -0,0 +1,104 @@
+/* crypto/ui/ui_err.c */
+/* ====================================================================
+ * Copyright (c) 1999 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
+ *    openssl-core@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).
+ *
+ */
+
+/* NOTE: this file was auto generated by the mkerr.pl script: any changes
+ * made to it will be overwritten when the script next updates this file,
+ * only reason strings will be preserved.
+ */
+
+#include <stdio.h>
+#include <openssl/err.h>
+#include <openssl/ui.h>
+
+/* BEGIN ERROR CODES */
+#ifndef OPENSSL_NO_ERR
+static ERR_STRING_DATA UI_str_functs[]=
+	{
+{ERR_PACK(0,UI_F_GENERAL_ALLOCATE_STRING,0),	"GENERAL_ALLOCATE_STRING"},
+{ERR_PACK(0,UI_F_UI_DUP_ERROR_STRING,0),	"UI_dup_error_string"},
+{ERR_PACK(0,UI_F_UI_DUP_INFO_STRING,0),	"UI_dup_info_string"},
+{ERR_PACK(0,UI_F_UI_DUP_INPUT_STRING,0),	"UI_dup_input_string"},
+{ERR_PACK(0,UI_F_UI_DUP_VERIFY_STRING,0),	"UI_dup_verify_string"},
+{ERR_PACK(0,UI_F_UI_GET0_RESULT,0),	"UI_get0_result"},
+{ERR_PACK(0,UI_F_UI_NEW_METHOD,0),	"UI_new_method"},
+{ERR_PACK(0,UI_F_UI_SET_RESULT,0),	"UI_set_result"},
+{0,NULL}
+	};
+
+static ERR_STRING_DATA UI_str_reasons[]=
+	{
+{UI_R_INDEX_TOO_LARGE                    ,"index too large"},
+{UI_R_INDEX_TOO_SMALL                    ,"index too small"},
+{UI_R_RESULT_TOO_LARGE                   ,"result too large"},
+{UI_R_RESULT_TOO_SMALL                   ,"result too small"},
+{0,NULL}
+	};
+
+#endif
+
+void ERR_load_UI_strings(void)
+	{
+	static int init=1;
+
+	if (init)
+		{
+		init=0;
+#ifndef OPENSSL_NO_ERR
+		ERR_load_strings(ERR_LIB_UI,UI_str_functs);
+		ERR_load_strings(ERR_LIB_UI,UI_str_reasons);
+#endif
+
+		}
+	}
diff --git a/crypto/ui/ui_lib.c b/crypto/ui/ui_lib.c
new file mode 100644
index 0000000000..132236fe65
--- /dev/null
+++ b/crypto/ui/ui_lib.c
@@ -0,0 +1,506 @@
+/* crypto/ui/ui_lib.c -*- mode:C; c-file-style: "eay" -*- */
+/* Written by Richard Levitte (levitte@stacken.kth.se) for the OpenSSL
+ * project 2000.
+ */
+/* ====================================================================
+ * Copyright (c) 1998-2000 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
+ *    openssl-core@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).
+ *
+ */
+
+#include <string.h>
+
+#include <openssl/ui.h>
+#include <openssl/err.h>
+#include "ui_locl.h"
+
+IMPLEMENT_STACK_OF(UI_STRING_ST)
+
+static const UI_METHOD *default_UI_meth=NULL;
+static int ui_meth_num=0;
+static STACK_OF(CRYPTO_EX_DATA_FUNCS) *ui_meth=NULL;
+
+UI *UI_new(void)
+	{
+	return(UI_new_method(NULL));
+	}
+
+UI *UI_new_method(const UI_METHOD *method)
+	{
+	UI *ret;
+
+	ret=(UI *)OPENSSL_malloc(sizeof(UI));
+	if (ret == NULL)
+		{
+		UIerr(UI_F_UI_NEW_METHOD,ERR_R_MALLOC_FAILURE);
+		return NULL;
+		}
+	if (method == NULL)
+		ret->meth=UI_get_default_method();
+	else
+		ret->meth=method;
+
+	ret->strings=NULL;
+	return ret;
+	}
+
+static void free_string(void *data)
+	{
+	UI_STRING *uis = (UI_STRING *)data;
+	if (uis->flags & OUT_STRING_FREEABLE)
+		OPENSSL_free((char *)uis->out_string);
+	OPENSSL_free(uis);
+	}
+
+void UI_free(UI *ui)
+	{
+	sk_UI_STRING_pop_free(ui->strings,free_string);
+	OPENSSL_free(ui);
+	}
+
+static int allocate_string_stack(UI *ui)
+	{
+	if (ui->strings == NULL)
+		{
+		ui->strings=sk_UI_STRING_new_null();
+		if (ui->strings == NULL)
+			{
+			return -1;
+			}
+		}
+	return 0;
+	}
+
+static int general_allocate_string(UI *ui, const char *prompt,
+	int prompt_freeable, enum UI_string_types type,
+	char *result_buf, int minsize, int maxsize, const char *test_buf)
+	{
+	int ret=-1;
+
+	if (prompt == NULL)
+		{
+		UIerr(UI_F_GENERAL_ALLOCATE_STRING,ERR_R_PASSED_NULL_PARAMETER);
+		}
+	else if (allocate_string_stack(ui) >= 0)
+		{
+		UI_STRING *s=(UI_STRING *)OPENSSL_malloc(sizeof(UI_STRING));
+		s->out_string=prompt;
+		s->flags=prompt_freeable ? OUT_STRING_FREEABLE : 0;
+		s->type=type;
+		s->result_buf=result_buf;
+		s->result_minsize=minsize;
+		s->result_maxsize=maxsize;
+		s->test_buf=test_buf;
+		ret=sk_UI_STRING_push(ui->strings, s);
+		}
+	return ret;
+	}
+
+/* Returns the index to the place in the stack or 0 for error.  Uses a
+   direct reference to the prompt.  */
+int UI_add_input_string(UI *ui, const char *prompt, int echo_p,
+	char *result_buf, int minsize, int maxsize)
+	{
+	return general_allocate_string(ui, prompt, 0,
+		echo_p?UI_STRING_ECHO:UI_STRING_NOECHO,
+		result_buf, minsize, maxsize, NULL);
+	}
+
+/* Same as UI_add_input_string(), excepts it takes a copy of the prompt */
+int UI_dup_input_string(UI *ui, const char *prompt, int echo_p,
+	char *result_buf, int minsize, int maxsize)
+	{
+	char *prompt_copy=NULL;
+
+	if (prompt)
+		{
+		prompt_copy=strdup(prompt);
+		if (prompt_copy == NULL)
+			{
+			UIerr(UI_F_UI_DUP_INPUT_STRING,ERR_R_MALLOC_FAILURE);
+			return 0;
+			}
+		}
+	
+	return general_allocate_string(ui, prompt, 1,
+		echo_p?UI_STRING_ECHO:UI_STRING_NOECHO,
+		result_buf, minsize, maxsize, NULL);
+	}
+
+int UI_add_verify_string(UI *ui, const char *prompt, int echo_p,
+	char *result_buf, int minsize, int maxsize, const char *test_buf)
+	{
+	return general_allocate_string(ui, prompt, 0,
+		echo_p?UI_VERIFY_ECHO:UI_VERIFY_NOECHO,
+		result_buf, minsize, maxsize, test_buf);
+	}
+
+int UI_dup_verify_string(UI *ui, const char *prompt, int echo_p,
+	char *result_buf, int minsize, int maxsize, const char *test_buf)
+	{
+	char *prompt_copy=NULL;
+
+	if (prompt)
+		{
+		prompt_copy=strdup(prompt);
+		if (prompt_copy == NULL)
+			{
+			UIerr(UI_F_UI_DUP_VERIFY_STRING,ERR_R_MALLOC_FAILURE);
+			return -1;
+			}
+		}
+	
+	return general_allocate_string(ui, prompt, 1,
+		echo_p?UI_VERIFY_ECHO:UI_VERIFY_NOECHO,
+		result_buf, minsize, maxsize, test_buf);
+	}
+
+int UI_add_info_string(UI *ui, const char *text)
+	{
+	return general_allocate_string(ui, text, 0, UI_INFO, NULL, 0, 0, NULL);
+	}
+
+int UI_dup_info_string(UI *ui, const char *text)
+	{
+	char *text_copy=NULL;
+
+	if (text)
+		{
+		text_copy=strdup(text);
+		if (text_copy == NULL)
+			{
+			UIerr(UI_F_UI_DUP_INFO_STRING,ERR_R_MALLOC_FAILURE);
+			return -1;
+			}
+		}
+
+	return general_allocate_string(ui, text, 1, UI_INFO, NULL, 0, 0, NULL);
+	}
+
+int UI_add_error_string(UI *ui, const char *text)
+	{
+	return general_allocate_string(ui, text, 0, UI_ERROR, NULL, 0, 0,
+		NULL);
+	}
+
+int UI_dup_error_string(UI *ui, const char *text)
+	{
+	char *text_copy=NULL;
+
+	if (text)
+		{
+		text_copy=strdup(text);
+		if (text_copy == NULL)
+			{
+			UIerr(UI_F_UI_DUP_ERROR_STRING,ERR_R_MALLOC_FAILURE);
+			return -1;
+			}
+		}
+	return general_allocate_string(ui, text_copy, 1, UI_ERROR, NULL, 0, 0,
+		NULL);
+	}
+
+const char *UI_get0_result(UI *ui, int i)
+	{
+	if (i < 0)
+		{
+		UIerr(UI_F_UI_GET0_RESULT,UI_R_INDEX_TOO_SMALL);
+		return NULL;
+		}
+	if (i >= sk_UI_STRING_num(ui->strings))
+		{
+		UIerr(UI_F_UI_GET0_RESULT,UI_R_INDEX_TOO_LARGE);
+		return NULL;
+		}
+	return UI_get0_result_string(sk_UI_STRING_value(ui->strings, i));
+	}
+
+int UI_process(UI *ui)
+	{
+	int i, ok=0;
+
+	if (ui->meth->ui_open_session && !ui->meth->ui_open_session(ui))
+		return -1;
+
+	for(i=0; i<sk_UI_STRING_num(ui->strings); i++)
+		{
+		if (ui->meth->ui_write_string
+			&& !ui->meth->ui_write_string(ui,
+				sk_UI_STRING_value(ui->strings, i)))
+			{
+			ok=-1;
+			goto err;
+			}
+		}
+
+	for(i=0; i<sk_UI_STRING_num(ui->strings); i++)
+		{
+		if (ui->meth->ui_read_string
+			&& !ui->meth->ui_read_string(ui,
+				sk_UI_STRING_value(ui->strings, i)))
+			{
+			ok=-1;
+			goto err;
+			}
+		}
+ err:
+	if (ui->meth->ui_close_session && !ui->meth->ui_close_session(ui))
+		return -1;
+	return ok;
+	}
+
+int UI_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
+	     CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func)
+        {
+	ui_meth_num++;
+	return(CRYPTO_get_ex_new_index(ui_meth_num-1,
+		&ui_meth,argl,argp,new_func,dup_func,free_func));
+        }
+
+int UI_set_ex_data(UI *r, int idx, void *arg)
+	{
+	return(CRYPTO_set_ex_data(&r->ex_data,idx,arg));
+	}
+
+void *UI_get_ex_data(UI *r, int idx)
+	{
+	return(CRYPTO_get_ex_data(&r->ex_data,idx));
+	}
+
+void UI_set_default_method(const UI_METHOD *meth)
+	{
+	default_UI_meth=meth;
+	}
+
+const UI_METHOD *UI_get_default_method(void)
+	{
+	if (default_UI_meth == NULL)
+		{
+		default_UI_meth=UI_OpenSSL();
+		}
+	return default_UI_meth;
+	}
+
+const UI_METHOD *UI_get_method(UI *ui)
+	{
+	return ui->meth;
+	}
+
+const UI_METHOD *UI_set_method(UI *ui, const UI_METHOD *meth)
+	{
+	ui->meth=meth;
+	return ui->meth;
+	}
+
+
+UI_METHOD *UI_create_method(void)
+	{
+	return (UI_METHOD *)OPENSSL_malloc(sizeof(UI_METHOD));
+	}
+
+int UI_method_set_opener(UI_METHOD *method, int (*opener)(UI *ui))
+	{
+	if (method)
+		{
+		method->ui_open_session = opener;
+		return 0;
+		}
+	else
+		return -1;
+	}
+
+int UI_method_set_writer(UI_METHOD *method, int (*writer)(UI *ui, UI_STRING *uis))
+	{