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(enviroment_changed): return non-zero if enviroment that will

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determine default krb5cc name has changed.
(krb5_cc_default_name): also check if cached value is uptodate.


git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@21426 ec53bebd-3082-4978-b11e-865c3cabbd6b
This commit is contained in:
Love Hörnquist Åstrand
2007-07-10 12:07:33 +00:00
parent 7ce6be4012
commit 39184f36f3
1 changed files with 35 additions and 2 deletions
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37
lib/krb5/cache.c
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@@ -338,6 +338,35 @@ _krb5_expand_default_cc_name(krb5_context context, const char *str, char **res)
return 0;
}
/*
* Return non-zero if enviroment that will determine default krb5cc
* name has changed.
*/
static int
enviroment_changed(krb5_context context)
{
const char *e;
if(issuid())
return 0;
e = getenv("KRB5CCNAME");
if (e == NULL) {
if (context->default_cc_name_env) {
free(context->default_cc_name_env);
context->default_cc_name_env = NULL;
return 1;
}
} else {
if (context->default_cc_name_env == NULL)
return 1;
if (strcmp(e, context->default_cc_name_env) != 0)
return 1;
}
return 0;
}
/*
* Set the default cc name for `context' to `name'.
*/
@@ -353,8 +382,12 @@ krb5_cc_set_default_name(krb5_context context, const char *name)
if(!issuid()) {
e = getenv("KRB5CCNAME");
if (e)
if (e) {
p = strdup(e);
if (context->default_cc_name_env)
free(context->default_cc_name_env);
context->default_cc_name_env = strdup(e);
}
}
if (e == NULL) {
e = krb5_config_get_string(context, NULL, "libdefaults",
@@ -389,7 +422,7 @@ krb5_cc_set_default_name(krb5_context context, const char *name)
const char* KRB5_LIB_FUNCTION
krb5_cc_default_name(krb5_context context)
{
if (context->default_cc_name == NULL)
if (context->default_cc_name == NULL || enviroment_changed(context))
krb5_cc_set_default_name(context, NULL);
return context->default_cc_name;