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gss_krb5: split up functions in preparation of adding new enctypes

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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@citi.umich.edu>
Signed-off-by: Steve Dickson <steved@redhat.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Kevin Coffman
2010-03-17 13:02:49 -04:00
committed by Trond Myklebust
parent 54ec3d462f
commit 1ac3719a22
5 changed files with 69 additions and 12 deletions
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38
net/sunrpc/auth_gss/gss_krb5_wrap.c
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@@ -124,11 +124,10 @@ 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;
@@ -203,10 +202,9 @@ 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];
@@ -294,3 +292,31 @@ 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);
}
}