Add encryption type to the krb5 context structure and use it to switch
to the correct functions depending on the encryption type.
Signed-off-by: Kevin Coffman <kwc@xxxxxxxxxxxxxx>
---
include/linux/sunrpc/gss_krb5.h | 1 +
net/sunrpc/auth_gss/gss_krb5_mech.c | 1 +
net/sunrpc/auth_gss/gss_krb5_seal.c | 20 +++++++++++++++--
net/sunrpc/auth_gss/gss_krb5_unseal.c | 21 ++++++++++++++++--
net/sunrpc/auth_gss/gss_krb5_wrap.c | 38 ++++++++++++++++++++++++++++-----
5 files changed, 69 insertions(+), 12 deletions(-)
diff --git a/include/linux/sunrpc/gss_krb5.h b/include/linux/sunrpc/gss_krb5.h
index 65003b2..aa99e57 100644
--- a/include/linux/sunrpc/gss_krb5.h
+++ b/include/linux/sunrpc/gss_krb5.h
@@ -48,6 +48,7 @@
struct krb5_ctx {
int initiate; /* 1 = initiating, 0 = accepting */
+ u32 enctype;
struct crypto_blkcipher *enc;
struct crypto_blkcipher *seq;
s32 endtime;
diff --git a/net/sunrpc/auth_gss/gss_krb5_mech.c b/net/sunrpc/auth_gss/gss_krb5_mech.c
index 3c070d0..477cf07 100644
--- a/net/sunrpc/auth_gss/gss_krb5_mech.c
+++ b/net/sunrpc/auth_gss/gss_krb5_mech.c
@@ -137,6 +137,7 @@ gss_import_sec_context_kerberos(const void *p,
p = simple_get_bytes(p, end, &ctx->initiate, sizeof(ctx->initiate));
if (IS_ERR(p))
goto out_err_free_ctx;
+ ctx->enctype = ENCTYPE_DES_CBC_RAW;
/* The downcall format was designed before we completely understood
* the uses of the context fields; so it includes some stuff we
* just give some minimal sanity-checking, and some we ignore
diff --git a/net/sunrpc/auth_gss/gss_krb5_seal.c b/net/sunrpc/auth_gss/gss_krb5_seal.c
index b8f42ef..6319b33 100644
--- a/net/sunrpc/auth_gss/gss_krb5_seal.c
+++ b/net/sunrpc/auth_gss/gss_krb5_seal.c
@@ -71,11 +71,10 @@
DEFINE_SPINLOCK(krb5_seq_lock);
-u32
-gss_get_mic_kerberos(struct gss_ctx *gss_ctx, struct xdr_buf *text,
+static u32
+gss_get_mic_v1(struct krb5_ctx *ctx, struct xdr_buf *text,
struct xdr_netobj *token)
{
- struct krb5_ctx *ctx = gss_ctx->internal_ctx_id;
char cksumdata[16];
struct xdr_netobj md5cksum = {.len = 0, .data = cksumdata};
unsigned char *ptr, *msg_start;
@@ -121,3 +120,18 @@ gss_get_mic_kerberos(struct gss_ctx *gss_ctx, struct xdr_buf *text,
return (ctx->endtime < now) ? GSS_S_CONTEXT_EXPIRED : GSS_S_COMPLETE;
}
+
+u32
+gss_get_mic_kerberos(struct gss_ctx *gss_ctx, struct xdr_buf *text,
+ struct xdr_netobj *token)
+{
+ struct krb5_ctx *ctx = gss_ctx->internal_ctx_id;
+
+ switch (ctx->enctype) {
+ default:
+ BUG();
+ case ENCTYPE_DES_CBC_RAW:
+ return gss_get_mic_v1(ctx, text, token);
+ }
+}
+
diff --git a/net/sunrpc/auth_gss/gss_krb5_unseal.c b/net/sunrpc/auth_gss/gss_krb5_unseal.c
index 066ec73..945609a 100644
--- a/net/sunrpc/auth_gss/gss_krb5_unseal.c
+++ b/net/sunrpc/auth_gss/gss_krb5_unseal.c
@@ -71,11 +71,10 @@
/* read_token is a mic token, and message_buffer is the data that the mic was
* supposedly taken over. */
-u32
-gss_verify_mic_kerberos(struct gss_ctx *gss_ctx,
+static u32
+gss_verify_mic_v1(struct krb5_ctx *ctx,
struct xdr_buf *message_buffer, struct xdr_netobj *read_token)
{
- struct krb5_ctx *ctx = gss_ctx->internal_ctx_id;
int signalg;
int sealalg;
char cksumdata[16];
@@ -136,3 +135,19 @@ gss_verify_mic_kerberos(struct gss_ctx *gss_ctx,
return GSS_S_COMPLETE;
}
+
+u32
+gss_verify_mic_kerberos(struct gss_ctx *gss_ctx,
+ struct xdr_buf *message_buffer,
+ struct xdr_netobj *read_token)
+{
+ struct krb5_ctx *ctx = gss_ctx->internal_ctx_id;
+
+ switch (ctx->enctype) {
+ default:
+ BUG();
+ case ENCTYPE_DES_CBC_RAW:
+ return gss_verify_mic_v1(ctx, message_buffer, read_token);
+ }
+}
+
diff --git a/net/sunrpc/auth_gss/gss_krb5_wrap.c b/net/sunrpc/auth_gss/gss_krb5_wrap.c
index 4c14b0a..743fa92 100644
--- a/net/sunrpc/auth_gss/gss_krb5_wrap.c
+++ b/net/sunrpc/auth_gss/gss_krb5_wrap.c
@@ -125,11 +125,10 @@ make_confounder(char *p, u32 conflen)
/* XXX factor out common code with seal/unseal. */
-u32
-gss_wrap_kerberos(struct gss_ctx *ctx, int offset,
+static u32
+gss_wrap_kerberos_v1(struct krb5_ctx *kctx, int offset,
struct xdr_buf *buf, struct page **pages)
{
- struct krb5_ctx *kctx = ctx->internal_ctx_id;
char cksumdata[16];
struct xdr_netobj md5cksum = {.len = 0, .data = cksumdata};
int blocksize = 0, plainlen;
@@ -205,10 +204,9 @@ gss_wrap_kerberos(struct gss_ctx *ctx, int offset,
return (kctx->endtime < now) ? GSS_S_CONTEXT_EXPIRED : GSS_S_COMPLETE;
}
-u32
-gss_unwrap_kerberos(struct gss_ctx *ctx, int offset, struct xdr_buf *buf)
+static u32
+gss_unwrap_kerberos_v1(struct krb5_ctx *kctx, int offset, struct xdr_buf *buf)
{
- struct krb5_ctx *kctx = ctx->internal_ctx_id;
int signalg;
int sealalg;
char cksumdata[16];
@@ -296,3 +294,31 @@ gss_unwrap_kerberos(struct gss_ctx *ctx, int offset, struct xdr_buf *buf)
return GSS_S_COMPLETE;
}
+
+u32
+gss_wrap_kerberos(struct gss_ctx *gctx, int offset,
+ struct xdr_buf *buf, struct page **pages)
+{
+ struct krb5_ctx *kctx = gctx->internal_ctx_id;
+
+ switch (kctx->enctype) {
+ default:
+ BUG();
+ case ENCTYPE_DES_CBC_RAW:
+ return gss_wrap_kerberos_v1(kctx, offset, buf, pages);
+ }
+}
+
+u32
+gss_unwrap_kerberos(struct gss_ctx *gctx, int offset, struct xdr_buf *buf)
+{
+ struct krb5_ctx *kctx = gctx->internal_ctx_id;
+
+ switch (kctx->enctype) {
+ default:
+ BUG();
+ case ENCTYPE_DES_CBC_RAW:
+ return gss_unwrap_kerberos_v1(kctx, offset, buf);
+ }
+}
+
--
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