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libvirt/tools/virsh.h
John Ferlan ea48397b01 virsh: Add support for text based polkit authentication
https://bugzilla.redhat.com/show_bug.cgi?id=872166

When the login session doesn't have an ssh -X type display agent in
order for libvirtd to run the polkit session authentication, attempts
to run 'virsh -c qemu:///system list' from an unauthorized user (or one
that isn't part of the libvirt /etc/group) will fail with the following
error from libvirtd:

error: authentication unavailable: no polkit agent available to
       authenticate action 'org.libvirt.unix.manage'

In order to handle the local authentication, we will use the new
virPolkitAgentCreate API in order to create a text based authentication
agent for our non readonly session to authenticate with.

The new code will execute in a loop allowing 5 failures to authenticate
before failing out.

With this patch in place, the following occurs:

$ virsh -c qemu:///system list
==== AUTHENTICATING FOR org.libvirt.unix.manage ===
System policy prevents management of local virtualized systems
Authenticating as: Some User (SUser)
Password:
==== AUTHENTICATION COMPLETE ===
 Id    Name                           State
 ----------------------------------------------------
  1     somedomain                     running

$
2016-03-01 06:50:16 -05:00

154 lines
5.9 KiB
C

/*
* virsh.h: a shell to exercise the libvirt API
*
* Copyright (C) 2005, 2007-2016 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, see
* <http://www.gnu.org/licenses/>.
*
* Daniel Veillard <veillard@redhat.com>
* Karel Zak <kzak@redhat.com>
* Daniel P. Berrange <berrange@redhat.com>
*/
#ifndef VIRSH_H
# define VIRSH_H
# include <stdio.h>
# include <stdlib.h>
# include <string.h>
# include <stdarg.h>
# include <unistd.h>
# include <sys/stat.h>
# include <termios.h>
# include "internal.h"
# include "virerror.h"
# include "virthread.h"
# include "virpolkit.h"
# include "vsh.h"
# define VIRSH_PROMPT_RW "virsh # "
# define VIRSH_PROMPT_RO "virsh > "
# define VIR_FROM_THIS VIR_FROM_NONE
/*
* Command group types
*/
# define VIRSH_CMD_GRP_DOM_MANAGEMENT "Domain Management"
# define VIRSH_CMD_GRP_DOM_MONITORING "Domain Monitoring"
# define VIRSH_CMD_GRP_STORAGE_POOL "Storage Pool"
# define VIRSH_CMD_GRP_STORAGE_VOL "Storage Volume"
# define VIRSH_CMD_GRP_NETWORK "Networking"
# define VIRSH_CMD_GRP_NODEDEV "Node Device"
# define VIRSH_CMD_GRP_IFACE "Interface"
# define VIRSH_CMD_GRP_NWFILTER "Network Filter"
# define VIRSH_CMD_GRP_SECRET "Secret"
# define VIRSH_CMD_GRP_SNAPSHOT "Snapshot"
# define VIRSH_CMD_GRP_HOST_AND_HV "Host and Hypervisor"
# define VIRSH_CMD_GRP_VIRSH "Virsh itself"
/*
* Common command options
*/
# define VIRSH_COMMON_OPT_POOL(_helpstr) \
{.name = "pool", \
.type = VSH_OT_DATA, \
.flags = VSH_OFLAG_REQ, \
.help = _helpstr \
} \
# define VIRSH_COMMON_OPT_DOMAIN(_helpstr) \
{.name = "domain", \
.type = VSH_OT_DATA, \
.flags = VSH_OFLAG_REQ, \
.help = _helpstr \
} \
# define VIRSH_COMMON_OPT_CONFIG(_helpstr) \
{.name = "config", \
.type = VSH_OT_BOOL, \
.help = _helpstr \
} \
# define VIRSH_COMMON_OPT_LIVE(_helpstr) \
{.name = "live", \
.type = VSH_OT_BOOL, \
.help = _helpstr \
} \
# define VIRSH_COMMON_OPT_CURRENT(_helpstr) \
{.name = "current", \
.type = VSH_OT_BOOL, \
.help = _helpstr \
} \
# define VIRSH_COMMON_OPT_FILE(_helpstr) \
{.name = "file", \
.type = VSH_OT_DATA, \
.flags = VSH_OFLAG_REQ, \
.help = _helpstr \
} \
typedef struct _virshControl virshControl;
typedef virshControl *virshControlPtr;
typedef struct _virshCtrlData virshCtrlData;
/*
* vshControl
*/
struct _virshControl {
virConnectPtr conn; /* connection to hypervisor (MAY BE NULL) */
bool readonly; /* connect readonly (first time only, not
* during explicit connect command)
*/
bool useGetInfo; /* must use virDomainGetInfo, since
virDomainGetState is not supported */
bool useSnapshotOld; /* cannot use virDomainSnapshotGetParent or
virDomainSnapshotNumChildren */
bool blockJobNoBytes; /* true if _BANDWIDTH_BYTE blockjob flags
are missing */
const char *escapeChar; /* String representation of
console escape character */
};
/* Typedefs, function prototypes for job progress reporting.
* There are used by some long lingering commands like
* migrate, dump, save, managedsave.
*/
struct _virshCtrlData {
vshControl *ctl;
const vshCmd *cmd;
int writefd;
virConnectPtr dconn;
};
/* Filter flags for various vshCommandOpt*By() functions */
typedef enum {
VIRSH_BYID = (1 << 1),
VIRSH_BYUUID = (1 << 2),
VIRSH_BYNAME = (1 << 3),
VIRSH_BYMAC = (1 << 4),
} virshLookupByFlags;
virConnectPtr virshConnect(vshControl *ctl, const char *uri, bool readonly);
int virshDomainState(vshControl *ctl, virDomainPtr dom, int *reason);
int virshStreamSink(virStreamPtr st, const char *bytes, size_t nbytes,
void *opaque);
#endif /* VIRSH_H */