From decb9297dd1468b8be2b299800b642b654420c0b Mon Sep 17 00:00:00 2001
From: "ludovic.rousseau"
 <ludovic.rousseau@c6295689-39f2-0310-b995-f0e70906c6a9>
Date: Tue, 16 Aug 2005 11:05:09 +0000
Subject: [PATCH] add PKCS11_change_pin() function

git-svn-id: https://www.opensc-project.org/svnp/opensc/trunk@2489 c6295689-39f2-0310-b995-f0e70906c6a9
---
 src/libp11/libp11.h   |  5 +++++
 src/libp11/p11_err.c  |  1 +
 src/libp11/p11_slot.c | 24 ++++++++++++++++++++++++
 3 files changed, 30 insertions(+)

diff --git a/src/libp11/libp11.h b/src/libp11/libp11.h
index dce18295..bedce887 100644
--- a/src/libp11/libp11.h
+++ b/src/libp11/libp11.h
@@ -179,6 +179,10 @@ extern int PKCS11_init_token(PKCS11_TOKEN *, const char *pin,
 /* Initialize the user PIN on a token */
 extern int PKCS11_init_pin(PKCS11_TOKEN *, const char *pin);
 
+/* Change the user PIN on a token */
+extern int PKCS11_change_pin(PKCS11_SLOT *, const char *old_pin,
+	const char *new_pin);
+
 /* Store various objects on the token */
 extern int PKCS11_generate_key(PKCS11_TOKEN *, int, unsigned int, char *);
 extern int PKCS11_store_private_key(PKCS11_TOKEN *, EVP_PKEY *, char *);
@@ -224,6 +228,7 @@ extern void ERR_load_PKCS11_strings(void);
 #define PKCS11_F_PKCS11_STORE_CERTIFICATE	19
 #define PKCS11_F_PKCS11_SEED_RANDOM		20
 #define PKCS11_F_PKCS11_GENERATE_RANDOM		21
+#define PKCS11_F_PKCS11_CHANGE_PIN		22
 #define PKCS11_F_PKCS11_GETATTR			40
 
 #define PKCS11_ERR_BASE				1024
diff --git a/src/libp11/p11_err.c b/src/libp11/p11_err.c
index f9273312..95592571 100644
--- a/src/libp11/p11_err.c
+++ b/src/libp11/p11_err.c
@@ -85,6 +85,7 @@ static ERR_STRING_DATA PKCS11_str_functs[] = {
 	{ERR_PACK(0, PKCS11_F_PKCS11_GENERATE_KEY, 0), "PKCS11_generate_key"},
 	{ERR_PACK(0, PKCS11_F_PKCS11_STORE_PUBLIC_KEY, 0), "PKCS11_store_public_key"},
 	{ERR_PACK(0, PKCS11_F_PKCS11_STORE_CERTIFICATE, 0), "PKCS11_store_certificate"},
+	{ERR_PACK(0, PKCS11_F_PKCS11_CHANGE_PIN, 0), "PKCS11_change_pin"},
 	{0, NULL}
 };
 
diff --git a/src/libp11/p11_slot.c b/src/libp11/p11_slot.c
index 60fc310c..a0c215a7 100644
--- a/src/libp11/p11_slot.c
+++ b/src/libp11/p11_slot.c
@@ -251,6 +251,30 @@ int PKCS11_init_pin(PKCS11_TOKEN * token, const char *pin)
 	return pkcs11_check_token(ctx, TOKEN2SLOT(token));
 }
 
+/*
+ * Change the User PIN
+ */
+int PKCS11_change_pin(PKCS11_SLOT * slot, const char *old_pin,
+		const char *new_pin)
+{
+	PKCS11_SLOT_private *priv = PRIVSLOT(slot);
+	PKCS11_CTX *ctx = priv->parent;
+	int old_len, new_len, rv;
+
+	if (!priv->haveSession) {
+		PKCS11err(PKCS11_F_PKCS11_CHANGE_PIN, PKCS11_NO_SESSION);
+		return -1;
+	}
+
+	old_len = old_pin ? strlen(old_pin) : 0;
+	new_len = new_pin ? strlen(new_pin) : 0;
+	rv = CRYPTOKI_call(ctx, C_SetPIN(priv->session, (CK_UTF8CHAR *) old_pin,
+		old_len, (CK_UTF8CHAR *) new_pin, new_len));
+	CRYPTOKI_checkerr(PKCS11_F_PKCS11_CHANGE_PIN, rv);
+
+	return pkcs11_check_token(ctx, slot);
+}
+
 /*
  * Seed the random number generator
  */