Hello all,
during development of application that uses ENGINE and UI I found out
that UI provided by UI_OpenSSL() is almost perfect for me except for the
"prompt_constructor". After short research I found prototype for
"UI_construct_prompt" function in <openssl/ui.h> with following
description "..if the ui_method doesn't contain a pointer to a
user-defined prompt constructor, a default string is built.." So I wrote
my own implementation of "prompt constructor" and then I found out that
there is no easy way to set user-defined prompt constructor in the
"ui_method_st" structure. This structure is not declared in public
headers so 3rd party applications cannot access its members directly.
Definition of ui_method_st is:
struct ui_method_st
{
char *name;
int (*ui_open_session)(UI *ui);
int (*ui_write_string)(UI *ui, UI_STRING *uis);
int (*ui_flush)(UI *ui);
int (*ui_read_string)(UI *ui, UI_STRING *uis);
int (*ui_close_session)(UI *ui);
char *(*ui_construct_prompt)(UI *ui, const char *object_desc, const
char *object_name);
};
There are getter and setter functions available for all members except
of "ui_construct_prompt" so I wrote them to solve my problem.
I am attaching patch for openssl-0.9.8m that adds setter and getter for
"ui_construct_prompt". However I am not sure if this can be added to
0.9.8 branch so please let me know if you need me to rewrite this patch
for other version or branch.
--
Jaroslav Imrich
Disig, a.s.
Zahradnicka 151, 821 08 Bratislava 2
[email protected]
www.disig.sk
__________ Information from ESET NOD32 Antivirus, version of virus signature
database 4928 (20100309) __________
The message was checked by ESET NOD32 Antivirus.
http://www.eset.com
diff -ur openssl-0.9.8m/crypto/ui/ui.h openssl-0.9.8m-modified/crypto/ui/ui.h
--- openssl-0.9.8m/crypto/ui/ui.h 2005-03-31 11:26:35.000000000 +0200
+++ openssl-0.9.8m-modified/crypto/ui/ui.h 2010-03-09 09:49:37.000000000
+0100
@@ -310,11 +310,13 @@
int UI_method_set_flusher(UI_METHOD *method, int (*flusher)(UI *ui));
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_set_prompt_constructor(UI_METHOD *method, char
*(*prompt_constructor)(UI* ui, const char* object_desc, const char*
object_name));
int (*UI_method_get_opener(UI_METHOD *method))(UI*);
int (*UI_method_get_writer(UI_METHOD *method))(UI*,UI_STRING*);
int (*UI_method_get_flusher(UI_METHOD *method))(UI*);
int (*UI_method_get_reader(UI_METHOD *method))(UI*,UI_STRING*);
int (*UI_method_get_closer(UI_METHOD *method))(UI*);
+char* (*UI_method_get_prompt_constructor(UI_METHOD *method))(UI*, const char*,
const char*);
/* The following functions are helpers for method writers to access relevant
data from a UI_STRING. */
diff -ur openssl-0.9.8m/crypto/ui/ui_lib.c
openssl-0.9.8m-modified/crypto/ui/ui_lib.c
--- openssl-0.9.8m/crypto/ui/ui_lib.c 2009-02-16 16:17:26.000000000 +0100
+++ openssl-0.9.8m-modified/crypto/ui/ui_lib.c 2010-03-09 10:54:44.000000000
+0100
@@ -693,6 +693,17 @@
return -1;
}
+int UI_method_set_prompt_constructor(UI_METHOD *method, char
*(*prompt_constructor)(UI* ui, const char* object_desc, const char*
object_name))
+ {
+ if (method)
+ {
+ method->ui_construct_prompt = prompt_constructor;
+ return 0;
+ }
+ else
+ return -1;
+ }
+
int (*UI_method_get_opener(UI_METHOD *method))(UI*)
{
if (method)
@@ -733,6 +744,14 @@
return NULL;
}
+char* (*UI_method_get_prompt_constructor(UI_METHOD *method))(UI*, const char*,
const char*)
+ {
+ if (method)
+ return method->ui_construct_prompt;
+ else
+ return NULL;
+ }
+
enum UI_string_types UI_get_string_type(UI_STRING *uis)
{
if (!uis)
diff -ur openssl-0.9.8m/include/openssl/ui.h
openssl-0.9.8m-modified/include/openssl/ui.h
--- openssl-0.9.8m/include/openssl/ui.h 2005-03-31 11:26:35.000000000 +0200
+++ openssl-0.9.8m-modified/include/openssl/ui.h 2010-03-09
09:49:37.000000000 +0100
@@ -310,11 +310,13 @@
int UI_method_set_flusher(UI_METHOD *method, int (*flusher)(UI *ui));
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_set_prompt_constructor(UI_METHOD *method, char
*(*prompt_constructor)(UI* ui, const char* object_desc, const char*
object_name));
int (*UI_method_get_opener(UI_METHOD *method))(UI*);
int (*UI_method_get_writer(UI_METHOD *method))(UI*,UI_STRING*);
int (*UI_method_get_flusher(UI_METHOD *method))(UI*);
int (*UI_method_get_reader(UI_METHOD *method))(UI*,UI_STRING*);
int (*UI_method_get_closer(UI_METHOD *method))(UI*);
+char* (*UI_method_get_prompt_constructor(UI_METHOD *method))(UI*, const char*,
const char*);
/* The following functions are helpers for method writers to access relevant
data from a UI_STRING. */
Only in openssl-0.9.8m-modified/: Makefile.bak
Only in openssl-0.9.8m-modified/test: newkey.pem
Only in openssl-0.9.8m-modified/test: testkey.pem
Only in openssl-0.9.8m-modified/test: testreq.pem
