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attribute-based implementation of gss_pname_to_uid

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This commit is contained in:
Luke Howard
2011-03-21 11:54:52 +11:00
parent ca48b27fe7
commit 907da38cd9
1 changed files with 105 additions and 14 deletions
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119
lib/gssapi/mech/gss_pname_to_uid.c
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@@ -32,6 +32,104 @@
#include "mech_locl.h"
static OM_uint32
mech_pname_to_uid(OM_uint32 *minor_status,
struct _gss_mechanism_name *mn,
uid_t *uidp)
{
OM_uint32 major_status = GSS_S_UNAVAILABLE;
*minor_status = 0;
if (mn->gmn_mech->gm_pname_to_uid == NULL)
return GSS_S_UNAVAILABLE;
major_status = mn->gmn_mech->gm_pname_to_uid(minor_status,
mn->gmn_name,
mn->gmn_mech_oid,
uidp);
if (GSS_ERROR(major_status))
_gss_mg_error(mn->gmn_mech, major_status, *minor_status);
return major_status;
}
static OM_uint32
attr_pname_to_uid(OM_uint32 *minor_status,
struct _gss_mechanism_name *mn,
uid_t *uidp)
{
OM_uint32 major_status = GSS_S_UNAVAILABLE;
OM_uint32 tmpMinor;
int more = -1;
gss_buffer_desc attribute;
*minor_status = 0;
if (mn->gmn_mech->gm_get_name_attribute == NULL)
return GSS_S_UNAVAILABLE;
attribute.length = sizeof("local-login-user") - 1;
attribute.value = "local-login-user";
while (more != 0) {
gss_buffer_desc value;
gss_buffer_desc display_value;
int authenticated = 0, complete = 0, code;
#ifdef POSIX_GETPWNAM_R
char pwbuf[2048];
struct passwd pw, *pwd;
#else
struct passwd *pwd;
#endif
char *localname;
major_status = mn->gmn_mech->gm_get_name_attribute(minor_status,
mn->gmn_name,
&attribute,
&authenticated,
&complete,
&value,
&display_value,
&more);
if (GSS_ERROR(major_status)) {
_gss_mg_error(mn->gmn_mech, major_status, *minor_status);
break;
}
localname = malloc(value.length + 1);
if (localname == NULL) {
major_status = GSS_S_FAILURE;
*minor_status = ENOMEM;
break;
}
memcpy(localname, value.value, value.length);
localname[value.length] = '\0';
#ifdef POSIX_GETPWNAM_R
if (getpwnam_r(localname, &pw, pwbuf, sizeof(pwbuf), &pwd) != 0)
pwd = NULL;
#else
pwd = getpwnam(localname);
#endif
free(localname);
gss_release_buffer(&tmpMinor, &value);
gss_release_buffer(&tmpMinor, &display_value);
if (code == 0 && pwd != NULL) {
*uidp = pwd->pw_uid;
major_status = GSS_S_COMPLETE;
*minor_status = 0;
break;
} else
major_status = GSS_S_UNAVAILABLE;
}
return major_status;
}
OM_uint32
gss_pname_to_uid(OM_uint32 *minor_status,
const gss_name_t pname,
@@ -49,30 +147,23 @@ gss_pname_to_uid(OM_uint32 *minor_status,
if (GSS_ERROR(major_status))
return major_status;
if (mn->gmn_mech->gm_pname_to_uid == NULL)
return GSS_S_UNAVAILABLE;
major_status = mn->gmn_mech->gm_pname_to_uid(minor_status,
mn->gmn_name,
mech_type,
uidp);
major_status = mech_pname_to_uid(minor_status, mn, uidp);
if (major_status != GSS_S_COMPLETE)
major_status = attr_pname_to_uid(minor_status, mn, uidp);
} else {
HEIM_SLIST_FOREACH(mn, &name->gn_mn, gmn_link) {
if (mn->gmn_mech->gm_pname_to_uid == NULL)
continue;
major_status = mn->gmn_mech->gm_pname_to_uid(minor_status,
mn->gmn_name,
mn->gmn_mech_oid,
uidp);
major_status = mech_pname_to_uid(minor_status, mn, uidp);
if (major_status != GSS_S_COMPLETE)
major_status = attr_pname_to_uid(minor_status, mn, uidp);
if (major_status != GSS_S_UNAVAILABLE)
break;
}
}
if (major_status != GSS_S_COMPLETE &&
major_status != GSS_S_UNAVAILABLE &&
mn != NULL)
if (major_status != GSS_S_COMPLETE && mn != NULL)
_gss_mg_error(mn->gmn_mech, major_status, *minor_status);
return major_status;