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krb5, kadm5: refactor plugin API

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Refactor plugin framework to use a single list of loaded plugins; add a new
plugin API where DSOs export a load function that can declare dependencies and
export multiple plugins; refactor kadm5 hook API to use krb5 plugin framework.

More information in krb5-plugin(7).
This commit is contained in:
Luke Howard
2019-01-01 21:55:36 +11:00
committed by Nico Williams
parent e9b3b2326d
commit 803efebca5
37 changed files with 1293 additions and 639 deletions
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46
kdc/windc.c
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@@ -39,6 +39,21 @@ static int have_plugin = 0;
* Pick the first WINDC module that we find.
*/
static const char *windc_plugin_deps[] = {
"kdc",
"krb5",
"hdb",
NULL
};
static struct krb5_plugin_data windc_plugin_data = {
"krb5",
"windc",
KRB5_WINDC_PLUGIN_MINOR,
windc_plugin_deps,
kdc_get_instance
};
static krb5_error_code KRB5_LIB_CALL
load(krb5_context context, const void *plug, void *plugctx, void *userctx)
{
@@ -49,8 +64,8 @@ load(krb5_context context, const void *plug, void *plugctx, void *userctx)
krb5_error_code
krb5_kdc_windc_init(krb5_context context)
{
(void)_krb5_plugin_run_f(context, "krb5", "windc",
KRB5_WINDC_PLUGIN_MINOR, 0, NULL, load);
(void)_krb5_plugin_run_f(context, &windc_plugin_data, 0, NULL, load);
return 0;
}
@@ -84,8 +99,8 @@ _kdc_pac_generate(krb5_context context,
uc.client = client;
uc.pac = pac;
(void)_krb5_plugin_run_f(context, "krb5", "windc",
KRB5_WINDC_PLUGIN_MINOR, 0, &uc, generate);
(void)_krb5_plugin_run_f(context, &windc_plugin_data,
0, &uc, generate);
return 0;
}
@@ -141,8 +156,8 @@ _kdc_pac_verify(krb5_context context,
uc.pac = pac;
uc.verified = verified;
(void)_krb5_plugin_run_f(context, "krb5", "windc",
KRB5_WINDC_PLUGIN_MINOR, 0, &uc, verify);
(void)_krb5_plugin_run_f(context, &windc_plugin_data,
0, &uc, verify);
return 0;
}
@@ -191,8 +206,8 @@ _kdc_check_access(krb5_context context,
uc.req = req;
uc.method_data = method_data;
ret = _krb5_plugin_run_f(context, "krb5", "windc",
KRB5_WINDC_PLUGIN_MINOR, 0, &uc, check);
ret = _krb5_plugin_run_f(context, &windc_plugin_data,
0, &uc, check);
}
if (ret == KRB5_PLUGIN_NO_HANDLE)
@@ -202,3 +217,18 @@ _kdc_check_access(krb5_context context,
req->msg_type == krb_as_req);
return ret;
}
uintptr_t
kdc_get_instance(const char *libname)
{
static const char *instance = "libkdc";
if (strcmp(libname, "kdc") == 0)
return (uintptr_t)instance;
else if (strcmp(libname, "hdb") == 0)
return hdb_get_instance(libname);
else if (strcmp(libname, "krb5") == 0)
return krb5_get_instance(libname);
return 0;
}