libvirt/src/util/virauthconfig.c
Daniel P. Berrange a4fb88b5c9 Add helper API for finding auth file path
* src/util/virauth.c, src/util/virauth.h: Add virAuthGetConfigFilePath
* include/libvirt/virterror.h, src/util/virterror.c: Add
  VIR_FROM_AUTH error domain

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
2012-03-23 13:24:07 +00:00

176 lines
4.2 KiB
C

/*
* virauthconfig.c: authentication config handling
*
* Copyright (C) 2012 Red Hat, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Author: Daniel P. Berrange <berrange@redhat.com>
*/
#include <config.h>
#include "virauthconfig.h"
#include "virkeyfile.h"
#include "memory.h"
#include "util.h"
#include "logging.h"
#include "virterror_internal.h"
struct _virAuthConfig {
virKeyFilePtr keyfile;
char *path;
};
#define VIR_FROM_THIS VIR_FROM_NONE
#define virAuthReportError(code, ...) \
virReportErrorHelper(VIR_FROM_THIS, code, __FILE__, \
__FUNCTION__, __LINE__, __VA_ARGS__)
virAuthConfigPtr virAuthConfigNew(const char *path)
{
virAuthConfigPtr auth;
if (VIR_ALLOC(auth) < 0) {
virReportOOMError();
goto error;
}
if (!(auth->path = strdup(path))) {
virReportOOMError();
goto error;
}
if (!(auth->keyfile = virKeyFileNew()))
goto error;
if (virKeyFileLoadFile(auth->keyfile, path) < 0)
goto error;
return auth;
error:
virAuthConfigFree(auth);
return NULL;
}
virAuthConfigPtr virAuthConfigNewData(const char *path,
const char *data,
size_t len)
{
virAuthConfigPtr auth;
if (VIR_ALLOC(auth) < 0) {
virReportOOMError();
goto error;
}
if (!(auth->path = strdup(path))) {
virReportOOMError();
goto error;
}
if (!(auth->keyfile = virKeyFileNew()))
goto error;
if (virKeyFileLoadData(auth->keyfile, path, data, len) < 0)
goto error;
return auth;
error:
virAuthConfigFree(auth);
return NULL;
}
void virAuthConfigFree(virAuthConfigPtr auth)
{
if (!auth)
return;
virKeyFileFree(auth->keyfile);
VIR_FREE(auth->path);
VIR_FREE(auth);
}
int virAuthConfigLookup(virAuthConfigPtr auth,
const char *service,
const char *hostname,
const char *credname,
const char **value)
{
char *authgroup = NULL;
char *credgroup = NULL;
const char *authcred;
int ret = -1;
*value = NULL;
VIR_DEBUG("Lookup '%s' '%s' '%s'", service, NULLSTR(hostname), credname);
if (!hostname)
hostname = "localhost";
if (virAsprintf(&authgroup, "auth-%s-%s", service, hostname) < 0) {
virReportOOMError();
goto cleanup;
}
if (!virKeyFileHasGroup(auth->keyfile, authgroup)) {
ret = 0;
goto cleanup;
}
if (!(authcred = virKeyFileGetValueString(auth->keyfile, authgroup, "credentials"))) {
virAuthReportError(VIR_ERR_CONF_SYNTAX,
_("Missing item 'credentials' in group '%s' in '%s'"),
authgroup, auth->path);
goto cleanup;
}
if (virAsprintf(&credgroup, "credentials-%s", authcred) < 0) {
virReportOOMError();
goto cleanup;
}
if (!virKeyFileHasGroup(auth->keyfile, credgroup)) {
virAuthReportError(VIR_ERR_CONF_SYNTAX,
_("Missing group 'credentials-%s' referenced from group '%s' in '%s'"),
authcred, authgroup, auth->path);
goto cleanup;
}
if (!virKeyFileHasValue(auth->keyfile, credgroup, credname)) {
ret = 0;
goto cleanup;
}
*value = virKeyFileGetValueString(auth->keyfile, credgroup, credname);
ret = 0;
cleanup:
VIR_FREE(authgroup);
VIR_FREE(credgroup);
return ret;
}