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Add hooks for processing the reply from the server.

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git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@21058 ec53bebd-3082-4978-b11e-865c3cabbd6b
This commit is contained in:
Love Hörnquist Åstrand
2007-06-12 17:49:37 +00:00
parent 88254f2835
commit e86b58e01c
1 changed files with 131 additions and 16 deletions
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147
lib/krb5/send_to_kdc.c
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@@ -413,26 +413,16 @@ krb5_sendto_kdc_flags(krb5_context context,
int flags)
{
krb5_error_code ret;
krb5_krbhst_handle handle;
int type;
krb5_sendto_ctx ctx;
if ((flags & KRB5_KRBHST_FLAGS_MASTER) || context->use_admin_kdc)
type = KRB5_KRBHST_ADMIN;
else
type = KRB5_KRBHST_KDC;
if (send_data->length > context->large_msg_size)
flags |= KRB5_KRBHST_FLAGS_LARGE_MSG;
ret = krb5_krbhst_init_flags(context, *realm, type, flags, &handle);
ret = krb5_sendto_ctx_alloc(context, &ctx);
if (ret)
return ret;
krb5_sendto_ctx_add_flags(ctx, flags);
krb5_sendto_ctx_set_func(ctx, _krb5_kdc_retry, NULL);
ret = krb5_sendto(context, send_data, handle, receive);
krb5_krbhst_free(context, handle);
if (ret == KRB5_KDC_UNREACH)
krb5_set_error_string(context,
"unable to reach any KDC in realm %s", *realm);
ret = krb5_sendto_context(context, ctx, send_data, *realm, receive);
krb5_sendto_ctx_free(context, ctx);
return ret;
}
@@ -458,4 +448,129 @@ krb5_set_send_to_kdc_func(krb5_context context,
return 0;
}
struct krb5_sendto_ctx {
int flags;
int type;
krb5_sendto_ctx_func func;
void *data;
};
krb5_error_code KRB5_LIB_FUNCTION
krb5_sendto_ctx_alloc(krb5_context context, krb5_sendto_ctx *ctx)
{
*ctx = calloc(1, sizeof(**ctx));
if (*ctx == NULL) {
krb5_set_error_string(context, "out of memory");
return ENOMEM;
}
return 0;
}
void KRB5_LIB_FUNCTION
krb5_sendto_ctx_add_flags(krb5_sendto_ctx ctx, int flags)
{
ctx->flags |= flags;
}
int KRB5_LIB_FUNCTION
krb5_sendto_ctx_get_flags(krb5_sendto_ctx ctx)
{
return ctx->flags;
}
void KRB5_LIB_FUNCTION
krb5_sendto_ctx_set_type(krb5_sendto_ctx ctx, int type)
{
ctx->type = type;
}
void KRB5_LIB_FUNCTION
krb5_sendto_ctx_set_func(krb5_sendto_ctx ctx,
krb5_sendto_ctx_func func,
void *data)
{
ctx->func = func;
ctx->data = data;
}
void KRB5_LIB_FUNCTION
krb5_sendto_ctx_free(krb5_context context, krb5_sendto_ctx ctx)
{
memset(ctx, 0, sizeof(*ctx));
free(ctx);
}
krb5_error_code KRB5_LIB_FUNCTION
krb5_sendto_context(krb5_context context,
krb5_sendto_ctx ctx,
const krb5_data *send_data,
const krb5_realm realm,
krb5_data *receive)
{
krb5_error_code ret;
krb5_krbhst_handle handle = NULL;
int type, freectx = 0;
int action;
krb5_data_zero(receive);
if (ctx == NULL) {
freectx = 1;
ret = krb5_sendto_ctx_alloc(context, &ctx);
if (ret)
return ret;
}
type = ctx->type;
if (type == 0) {
if ((ctx->flags & KRB5_KRBHST_FLAGS_MASTER) || context->use_admin_kdc)
type = KRB5_KRBHST_ADMIN;
else
type = KRB5_KRBHST_KDC;
}
if (send_data->length > context->large_msg_size)
ctx->flags |= KRB5_KRBHST_FLAGS_LARGE_MSG;
/* loop until we get back a appropriate response */
do {
action = KRB5_SENDTO_DONE;
krb5_data_free(receive);
if (handle == NULL) {
ret = krb5_krbhst_init_flags(context, realm, type,
ctx->flags, &handle);
if (ret) {
if (freectx)
krb5_sendto_ctx_free(context, ctx);
return ret;
}
}
ret = krb5_sendto(context, send_data, handle, receive);
if (ret)
break;
if (ctx->func) {
ret = (*ctx->func)(context, ctx, ctx->data, receive, &action);
if (ret)
break;
}
if (action != KRB5_SENDTO_CONTINUE) {
krb5_krbhst_free(context, handle);
handle = NULL;
}
} while (action != KRB5_SENDTO_DONE);
if (handle)
krb5_krbhst_free(context, handle);
if (ret == KRB5_KDC_UNREACH)
krb5_set_error_string(context,
"unable to reach any KDC in realm %s", realm);
if (ret)
krb5_data_free(receive);
if (freectx)
krb5_sendto_ctx_free(context, ctx);
return ret;
}