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sunrpc: make token header values less confusing 

g_make_token_header() and g_token_size() add two too many, and
therefore their callers pass in "(logical_value - 2)" rather
than "logical_value" as hard-coded values which causes confusion.

This dates back to the original g_make_token_header which took an
optional token type (token_id) value and added it to the token.
This was removed, but the routine always adds room for the token_id
rather than not.

Signed-off-by: Kevin Coffman <kwc@citi.umich.edu>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
This commit is contained in:
Kevin Coffman 2008-03-31 10:31:44 -04:00 committed by J. Bruce Fields
parent 5743d65c2f
commit 4ab4b0bedd
4 changed files with 8 additions and 8 deletions
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4
net/sunrpc/auth_gss/gss_generic_token.c
View File

@ -148,7 +148,7 @@ int
g_token_size(struct xdr_netobj *mech, unsigned int body_size)
{
/* set body_size to sequence contents size */
body_size += 4 + (int) mech->len; /* NEED overflow check */
body_size += 2 + (int) mech->len; /* NEED overflow check */
return(1 + der_length_size(body_size) + body_size);
}
@ -161,7 +161,7 @@ void
g_make_token_header(struct xdr_netobj *mech, int body_size, unsigned char **buf)
{
*(*buf)++ = 0x60;
der_write_length(buf, 4 + mech->len + body_size);
der_write_length(buf, 2 + mech->len + body_size);
*(*buf)++ = 0x06;
*(*buf)++ = (unsigned char) mech->len;
TWRITE_STR(*buf, mech->data, ((int) mech->len));

4
net/sunrpc/auth_gss/gss_krb5_seal.c
View File

@ -87,10 +87,10 @@ gss_get_mic_kerberos(struct gss_ctx *gss_ctx, struct xdr_buf *text,
now = get_seconds();
token->len = g_token_size(&ctx->mech_used, 22);
token->len = g_token_size(&ctx->mech_used, 24);
ptr = token->data;
g_make_token_header(&ctx->mech_used, 22, &ptr);
g_make_token_header(&ctx->mech_used, 24, &ptr);
*ptr++ = (unsigned char) ((KG_TOK_MIC_MSG>>8)&0xff);
*ptr++ = (unsigned char) (KG_TOK_MIC_MSG&0xff);

4
net/sunrpc/auth_gss/gss_krb5_wrap.c
View File

@ -137,7 +137,7 @@ gss_wrap_kerberos(struct gss_ctx *ctx, int offset,
BUG_ON((buf->len - offset) % blocksize);
plainlen = blocksize + buf->len - offset;
headlen = g_token_size(&kctx->mech_used, 22 + plainlen) -
headlen = g_token_size(&kctx->mech_used, 24 + plainlen) -
(buf->len - offset);
ptr = buf->head[0].iov_base + offset;
@ -149,7 +149,7 @@ gss_wrap_kerberos(struct gss_ctx *ctx, int offset,
buf->len += headlen;
BUG_ON((buf->len - offset - headlen) % blocksize);
g_make_token_header(&kctx->mech_used, 22 + plainlen, &ptr);
g_make_token_header(&kctx->mech_used, 24 + plainlen, &ptr);
*ptr++ = (unsigned char) ((KG_TOK_WRAP_MSG>>8)&0xff);

4
net/sunrpc/auth_gss/gss_spkm3_seal.c
View File

@ -107,10 +107,10 @@ spkm3_make_token(struct spkm3_ctx *ctx,
tokenlen = 10 + ctxelen + 1 + md5elen + 1;
/* Create token header using generic routines */
token->len = g_token_size(&ctx->mech_used, tokenlen);
token->len = g_token_size(&ctx->mech_used, tokenlen + 2);
ptr = token->data;
g_make_token_header(&ctx->mech_used, tokenlen, &ptr);
g_make_token_header(&ctx->mech_used, tokenlen + 2, &ptr);
spkm3_make_mic_token(&ptr, tokenlen, &mic_hdr, &md5cksum, md5elen, md5zbit);
} else if (toktype == SPKM_WRAP_TOK) { /* Not Supported */