imageid_defs.php 28.6 KB
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<?php
#
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# Copyright (c) 2006-2014 University of Utah and the Flux Group.
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# 
# {{{EMULAB-LICENSE
# 
# This file is part of the Emulab network testbed software.
# 
# This file is free software: you can redistribute it and/or modify it
# under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or (at
# your option) any later version.
# 
# This file 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 Affero General Public
# License for more details.
# 
# You should have received a copy of the GNU Affero General Public License
# along with this file.  If not, see <http://www.gnu.org/licenses/>.
# 
# }}}
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#
include_once("osinfo_defs.php");	# For SpitOSIDLink() below.

class Image
{
    var	$image;
    var $types;
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    var $group;
    var $project;
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    #
    # Constructor by lookup on unique ID
    #
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    function Image($id, $version = NULL) {
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	$safe_id = addslashes($id);

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	if (is_null($version)) {
	    $query_result =
		DBQueryWarn("select i.*,v.* from images as i ".
			    "left join image_versions as v on ".
			    "     v.imageid=i.imageid and v.version=i.version ".
			    "where i.imageid='$safe_id'");
	}
	else {
	    # This will get deleted images, but that is okay.
	    $safe_version = addslashes($version);
	    $query_result =
	        DBQueryWarn("select v.* from image_versions as v ".
			    "where v.imageid='$safe_id' and ".
			    "      v.version='$safe_version'");
	}
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	if (!$query_result || !mysql_num_rows($query_result)) {
	    $this->image = NULL;
	    return;
	}
	$this->image = mysql_fetch_array($query_result);

	#
	# Load the type info.
	#
	$types = array();
	
	$query_result = 
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	    DBQueryFatal("select distinct type from osidtoimageid ".
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			 "where imageid='$safe_id'");
	
	while ($row = mysql_fetch_array($query_result)) {
	    $types[] = $row['type'];
	}
	$this->types = $types;
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	# Load lazily;
	$this->group      = null;
	$this->project    = null;
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    }

    # Hmm, how does one cause an error in a php constructor?
    function IsValid() {
	return !is_null($this->image);
    }

    # Lookup by imageid
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    function Lookup($id,$version = NULL) {
	$foo = new Image($id,$version);
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	if (! $foo->IsValid())
	    return null;

	return $foo;
    }

    # Lookup by imagename in a project
    function LookupByName($project, $name) {
	$pid       = $project->pid();
	$safe_name = addslashes($name);
	
	$query_result =
	    DBQueryFatal("select imageid from images ".
			 "where pid='$pid' and imagename='$safe_name'");

	if (mysql_num_rows($query_result) == 0) {
	    return null;
	}
	$row = mysql_fetch_array($query_result);
	return Image::Lookup($row["imageid"]);
    }

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    # Look for most recent unreleased version.
    function LookupUnreleased() {
	global $DOPROVENANCE;
	if (!$DOPROVENANCE) {
	    return $this;
	}
	$imageid   = $this->imageid();
	
	$query_result =
	    DBQueryFatal("select version from image_versions ".
			 "where imageid='$imageid' and released=0 and ".
			 "      deleted is null ".
			 "order by version desc limit 1");

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	# If no unreleased version, just return $this. Might mean that
	# provenance is not turned on for the project cause of a feature.
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	if (mysql_num_rows($query_result) == 0) {
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	    return $this;
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	}
	$row = mysql_fetch_array($query_result);
	return Image::Lookup($imageid, $row["version"]);
    }

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    function LookupByUUID($uuid) {
	$safe_uuid = addslashes($uuid);

	$query_result =
	    DBQueryFatal("select imageid from images ".
			 "where uuid='$safe_uuid'");

	if (mysql_num_rows($query_result) == 0) {
	    return null;
	}
	$row = mysql_fetch_array($query_result);
	return Image::Lookup($row["imageid"]);
    }
    
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    #
    # Refresh an instance by reloading from the DB.
    #
    function Refresh() {
	if (! $this->IsValid())
	    return -1;

	$imageid = $this->imageid();
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	$version = $this->version();
	
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	$query_result =
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	    DBQueryWarn("select * from image_versions ".
			"where imageid='$imageid' and version='$version'");
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	if (!$query_result || !mysql_num_rows($query_result)) {
	    $this->imageid = NULL;
	    return -1;
	}
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	$this->image = mysql_fetch_array($query_result);
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	#
	# Reload the type info.
	#
	$types = array();
	
	$query_result = 
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	    DBQueryFatal("select distinct type from osidtoimageid ".
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			 "where imageid='$imageid'");
	
	while ($row = mysql_fetch_array($query_result)) {
	    $types[] = $row['type'];
	}
	$this->types = $types;
	
	return 0;
    }

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    #
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    # Class function to create a new image descriptor.
    #
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    function NewImageId($ez, $imagename, $args, $creator, $group,
			$target, &$errors) {
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	global $suexec_output, $suexec_output_array;

        #
        # Generate a temporary file and write in the XML goo.
        #
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	$xmlname = tempnam("/tmp", $ez ? "newimageid_ez" : "newimageid");
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	if (! $xmlname) {
	    TBERROR("Could not create temporary filename", 0);
	    $errors[] = "Transient error(1); please try again later.";
	    return null;
	}
	if (! ($fp = fopen($xmlname, "w"))) {
	    TBERROR("Could not open temp file $xmlname", 0);
	    $errors[] = "Transient error(2); please try again later.";
	    return null;
	}

	# Add these. Maybe caller should do this?
	$args["imagename"] = $imagename;

	fwrite($fp, "<image>\n");
	foreach ($args as $name => $value) {
	    fwrite($fp, "<attribute name=\"$name\">");
	    fwrite($fp, "  <value>" . htmlspecialchars($value) . "</value>");
	    fwrite($fp, "</attribute>\n");
	}
	fwrite($fp, "</image>\n");
	fclose($fp);
	chmod($xmlname, 0666);
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	$opt = ($target ? "-t " . escapeshellarg($target) : "");
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	$script = "webnewimageid" . ($ez ? "_ez" : "");
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	$retval = SUEXEC($creator->uid(),
			 $group->pid() . "," . $group->gid(),
			 "$script $opt $xmlname",
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			 SUEXEC_ACTION_IGNORE);

	if ($retval) {
	    if ($retval < 0) {
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		$errors[] = "Transient error(3, $retval); please try again later.";
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		SUEXECERROR(SUEXEC_ACTION_CONTINUE);
	    }
	    else {
		# unlink($xmlname);
		if (count($suexec_output_array)) {
		    for ($i = 0; $i < count($suexec_output_array); $i++) {
			$line = $suexec_output_array[$i];
			if (preg_match("/^([-\w]+):\s*(.*)$/",
				       $line, $matches)) {
			    $errors[$matches[1]] = $matches[2];
			}
			else
			    $errors[] = $line;
		    }
		}
		else
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		    $errors[] = "Transient error(4, $retval); please try again later.";
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	    }
	    return null;
	}

        #
        # Parse the last line of output. Ick.
        #
	unset($matches);
	
	if (!preg_match("/^IMAGE\s+([^\/]+)\/(\d+)\s+/",
			$suexec_output_array[count($suexec_output_array)-1],
			$matches)) {
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	    $errors[] = "Transient error(5); please try again later.";
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	    SUEXECERROR(SUEXEC_ACTION_CONTINUE);
	    return null;
	}
	$image = $matches[2];
	$newimage = image::Lookup($image);
	if (! $newimage) {
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	    $errors[] = "Transient error(6); please try again later.";
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	    TBERROR("Could not lookup new image $image", 0);
	    return null;
	}

	# Unlink this here, so that the file is left behind in case of error.
	# We can then create the image by hand from the xmlfile, if desired.
	unlink($xmlname);
	return $newimage; 
    }

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    #
    # Flip global bit. If making it global, turn off shared.
    # Also, if an EZ image, flip the bit on the os_info entry too.
    #
    function SetGlobal($mode) {
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	$imageid  = $this->imageid();
	$version  = $this->version();
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	$mode     = ($mode ? 1 : 0);
	$extra    = ($mode ? ",shared=0" : "");

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	DBQueryFatal("update image_versions set global='$mode' $extra ".
		     "where imageid='$imageid' and version='$version'");
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	if ($this->ezid()) {
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	    DBQueryFatal("update os_info_versions set shared='$mode' ".
			 "where osid='$imageid' and vers='$version'");
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	}
	return 0;
    }

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    #
    # Class function to edit an image descriptor.
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    #
    function EditImageid($image, $args, &$errors) {
	global $suexec_output, $suexec_output_array;

        #
        # Generate a temporary file and write in the XML goo.
        #
	$xmlname = tempnam("/tmp", "editimageid");
	if (! $xmlname) {
	    TBERROR("Could not create temporary filename", 0);
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	    $errors[] = "Transient error(1); please try again later.";
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	    return null;
	}
	if (! ($fp = fopen($xmlname, "w"))) {
	    TBERROR("Could not open temp file $xmlname", 0);
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	    $errors[] = "Transient error(2); please try again later.";
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	    return null;
	}

	# Add these. Maybe caller should do this?
	$args["imageid"] = $image->imageid();

	fwrite($fp, "<image>\n");
	foreach ($args as $name => $value) {
	    fwrite($fp, "<attribute name=\"$name\">");
	    fwrite($fp, "  <value>" . htmlspecialchars($value) . "</value>");
	    fwrite($fp, "</attribute>\n");
	}
	fwrite($fp, "</image>\n");
	fclose($fp);
	chmod($xmlname, 0666);

	$retval = SUEXEC("nobody", "nobody", "webeditimageid $xmlname",
			 SUEXEC_ACTION_IGNORE);

	if ($retval) {
	    if ($retval < 0) {
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		$errors[] = "Transient error(3, $retval); please try again later.";
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		SUEXECERROR(SUEXEC_ACTION_CONTINUE);
	    }
	    else {
		# unlink($xmlname);
		if (count($suexec_output_array)) {
		    for ($i = 0; $i < count($suexec_output_array); $i++) {
			$line = $suexec_output_array[$i];
			if (preg_match("/^([-\w]+):\s*(.*)$/",
				       $line, $matches)) {
			    $errors[$matches[1]] = $matches[2];
			}
			else
			    $errors[] = $line;
		    }
		}
		else
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		    $errors[] = "Transient error(4, $retval); please try again later.";
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	    }
	    return null;
	}

	# There are no return value(s) to parse at the end of the output.

	# Unlink this here, so that the file is left behind in case of error.
	# We can then create the image by hand from the xmlfile, if desired.
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	#unlink($xmlname);
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	return true;
    }

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    #
    # Equality test.
    #
    function SameImage($image) {
	return $image->imageid() == $this->imageid();
    }

    # accessors
    function field($name) {
	return (is_null($this->image) ? -1 : $this->image[$name]);
    }
    function imagename()	{ return $this->field("imagename"); }
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    function version()		{ return $this->field("version"); }
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    function pid()		{ return $this->field("pid"); }
    function gid()		{ return $this->field("gid"); }
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    function pid_idx()		{ return $this->field("pid_idx"); }
    function gid_idx()		{ return $this->field("gid_idx"); }
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    function imageid()		{ return $this->field("imageid"); }
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    function parent_imageid()	{ return $this->field("parent_imageid"); }
    function parent_version()	{ return $this->field("parent_version"); }
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    function uuid()		{ return $this->field("uuid"); }
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    function creator()		{ return $this->field("creator"); }
    function creator_idx()	{ return $this->field("creator_idx"); }
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    function creator_urn()	{ return $this->field("creator_urn"); }
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    function created()		{ return $this->field("created"); }
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    function deleted()		{ return $this->field("deleted"); }
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    function description()	{ return $this->field("description"); }
    function loadpart()		{ return $this->field("loadpart"); }
    function loadlength()	{ return $this->field("loadlength"); }
    function part1_osid()	{ return $this->field("part1_osid"); }
    function part2_osid()	{ return $this->field("part2_osid"); }
    function part3_osid()	{ return $this->field("part3_osid"); }
    function part4_osid()	{ return $this->field("part4_osid"); }
    function default_osid()	{ return $this->field("default_osid"); }
    function path()		{ return $this->field("path"); }
    function magic()		{ return $this->field("magic"); }
    function ezid()		{ return $this->field("ezid"); }
    function shared()		{ return $this->field("shared"); }
    function isglobal()		{ return $this->field("global"); }
    function updated()		{ return $this->field("updated"); }
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    function updater()		{ return $this->field("updater"); }
    function updater_urn()	{ return $this->field("updater_urn"); }
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    function mbr_version()	{ return $this->field("mbr_version"); }
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    function hash()		{ return $this->field("hash"); }
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    function metadata_url()	{ return $this->field("metadata_url"); }
    function imagefile_url()	{ return $this->field("imagefile_url"); }
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    function logfileid()	{ return $this->field("logfileid"); }
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    function noexport()		{ return $this->field("noexport"); }
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    function ready()		{ return $this->field("ready"); }
    function isdelta()		{ return $this->field("isdelta"); }
    function released()		{ return $this->field("released"); }
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    # Return the DB data.
    function DBData()		{ return $this->image; }
    # and the types array
    function Types()		{ reset($this->types); return $this->types; }

    #
    # Access Check, determines if $user can access $this record.
    # 
    function AccessCheck($user, $access_type) {
	global $TB_IMAGEID_READINFO;
	global $TB_IMAGEID_MODIFYINFO;
	global $TB_IMAGEID_DESTROY;
	global $TB_IMAGEID_ACCESS;
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	global $TB_IMAGEID_EXPORT;
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	global $TB_IMAGEID_MIN;
	global $TB_IMAGEID_MAX;
	global $TBDB_TRUST_USER;
	global $TBDB_TRUST_GROUPROOT;
	global $TBDB_TRUST_LOCALROOT;
	$mintrust = $TB_IMAGEID_READINFO;

	if ($access_type < $TB_IMAGEID_MIN || $access_type > $TB_IMAGEID_MAX) {
	    TBERROR("Invalid access type $access_type!", 1);
	}

        #
        # Admins do whatever they want!
        # 
	if (ISADMIN()) {
	    return 1;
	}

	$shared = $this->shared();
	$global = $this->isglobal();
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	$imageid= $this->imageid();
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	$pid    = $this->pid();
	$gid    = $this->gid();
	$uid    = $user->uid();
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	$uid_idx= $user->uid_idx();
	$pid_idx= $user->uid_idx();
	$gid_idx= $user->uid_idx();
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        #
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        # Global ImageIDs can be read by anyone but written with permission.
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        # 
	if ($global) {
	    if ($access_type == $TB_IMAGEID_READINFO) {
		return 1;
	    }
	}

        #
        # Otherwise must have proper trust in the project.
        # 
	if ($access_type == $TB_IMAGEID_READINFO) {
	    $mintrust = $TBDB_TRUST_USER;
            #
            # Shared imageids are readable by anyone in the project.
            #
	    if ($shared)
		$gid = $pid;
	}
	else {
	    $mintrust = $TBDB_TRUST_LOCALROOT;
	}

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	if (TBMinTrust(TBGrpTrust($uid, $pid, $gid), $mintrust) ||
	    TBMinTrust(TBGrpTrust($uid, $pid, $pid), $TBDB_TRUST_GROUPROOT)) {
	    return 1;
	}
        # No point in looking further; never allowed.
	if ($access_type == $TB_IMAGEID_EXPORT) {
	    return 0;
	}
	
	#
	# Look in the image permissions. First look for a user permission,
	# then look for a group permission.
	#
	$query_result = 
	    DBQueryFatal("select allow_write from image_permissions ".
			 "where imageid='$imageid' and ".
			 "      permission_type='user' and ".
			 "      permission_idx='$uid_idx'");
	
	if (mysql_num_rows($query_result)) {
	    $row  = mysql_fetch_array($query_result);

            # Only allowed to read.
	    if ($access_type == $TB_IMAGEID_READINFO ||
		$access_type == $TB_IMAGEID_ACCESS)
		return 1;
	}
	$trust_none = TBDB_TRUSTSTRING_NONE;
	$query_result = 
	    DBQueryFatal("select allow_write from group_membership as g ".
			 "left join image_permissions as p on ".
			 "     p.permission_type='group' and ".
			 "     p.permission_idx=g.gid_idx ".
			 "where g.uid_idx='$uid_idx' and ".
			 "      p.imageid='$imageid' and ".
			 "      trust!='$trust_none'");

	if (mysql_num_rows($query_result)) {
            # Only allowed to read.
	    if ($access_type == $TB_IMAGEID_READINFO ||
		$access_type == $TB_IMAGEID_ACCESS)
		return 1;
	}
	return 0;
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    }

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    #
    # Load the project object for an experiment.
    #
    function Project() {
	$pid_idx = $this->pid_idx();

	if ($this->project)
	    return $this->project;

	$this->project = Project::Lookup($pid_idx);
	if (! $this->project) {
	    TBERROR("Could not lookup project $pid_idx!", 1);
	}
	return $this->project;
    }
    #
    # Load the group object for an experiment.
    #
    function Group() {
	$gid_idx = $this->gid_idx();

	if ($this->group)
	    return $this->group;

	$this->group = Group::Lookup($gid_idx);
	if (! $this->group) {
	    TBERROR("Could not lookup group $gid_idx!", 1);
	}
	return $this->group;
    }

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    function Show($showperms = 0) {
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	global $TBBASE, $DOPROVENANCE;
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	$imageid	= $this->imageid();
	$imagename	= $this->imagename();
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	$version	= $this->version();
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	$pid		= $this->pid();
	$gid		= $this->gid();
	$description	= $this->description();
	$loadpart	= $this->loadpart();
	$loadlength	= $this->loadlength();
	$part1_osid	= $this->part1_osid();
	$part2_osid	= $this->part2_osid();
	$part3_osid	= $this->part3_osid();
	$part4_osid	= $this->part4_osid();
	$default_osid	= $this->default_osid();
	$path		= $this->path();
	$shared		= $this->shared();
	$globalid	= $this->isglobal();
	$creator	= $this->creator();
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	$creator_urn	= $this->creator_urn();
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	$created	= $this->created();
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	$updated	= $this->updated();
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	$updater	= $this->updater();
	$updater_urn	= $this->updater_urn();
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	$uuid           = $this->uuid();
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	$mbr_version    = $this->mbr_version();
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	$hash           = $this->hash();
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	#
	# An imported image has a metadata_url, and at the moment I
	# do want to worry about exporting an imported image.
	#
	$imagefile_url  = $this->imagefile_url();
	$metadata_url   = $this->metadata_url();
	if (! $metadata_url) {
	    $metadata_url = "$TBBASE/image_metadata.php?uuid=$uuid";
	}

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	if (!$description)
	    $description = "&nbsp;";
	if (!$path)
	    $path = "&nbsp;";
	if (!$created)
	    $created = "N/A";
    
        #
        # Generate the table.
        #
	echo "<table align=center border=2 cellpadding=2 cellspacing=2>\n";

	echo "<tr>
                <td>Image Name: </td>
                <td class=\"left\">$imagename</td>
              </tr>\n";

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	echo "<tr>
                <td>Description: </td>
                <td class=left>\n";
	echo "$description";
	echo "   </td>
 	      </tr>\n";

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	echo "<tr>
                <td>Project: </td>
                <td class=\"left\">
                  <a href='showproject.php3?pid=$pid'>$pid</a></td>
              </tr>\n";

	echo "<tr>
                  <td>Group: </td>
                  <td class=\"left\">
                    <a href='showgroup.php3?pid=$pid&gid=$gid'>$gid</a></td>
              </tr>\n";
    
	echo "<tr>
                <td>Created: </td>
                <td class=left>$created</td>
 	      </tr>\n";

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	echo "<tr>
                <td>Creator: </td>
                <td class=left>$creator</td>
     	      </tr>\n";

	if ($creator_urn) {
	    echo "<tr>
                    <td>Creator URN: </td>
                    <td class=left>$creator_urn</td>
         	  </tr>\n";
	}
	    
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	if ($updated) {
	    echo "<tr>
                    <td>Updated: </td>
                    <td class=left>$updated</td>
     	          </tr>\n";
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	    echo "<tr>
                    <td>Updated By: </td>
                    <td class=left>$updater</td>
     	          </tr>\n";
	    if ($updater_urn) {
		echo "<tr>
                        <td>Updater URN: </td>
                        <td class=left>$updater_urn</td>
         	          </tr>\n";
	    }
668
	}
669 670 671 672 673 674 675 676
	$deleted = $this->deleted();
	if (isset($deleted)) {
	    
	    echo "<tr>
                    <td><font color=red>Deleted: </font></td>
                    <td class=left><font color=red>$deleted</font></td>
     	          </tr>\n";
	}
677

678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694
	#
	# Find the last time this image was used. 
	#
	$usage_result =
	    DBQueryFatal("select FROM_UNIXTIME(stamp) as lastused ".
			 "  from image_history ".
			 "where action='os_setup' and imageid='$imageid' ".
			 "order by stamp desc limit 1");
	if (mysql_num_rows($usage_result)) {
	    $urow = mysql_fetch_array($usage_result);
	    $lastused = $urow['lastused'];

	    echo "<tr>
                    <td>Last Used: </td>
                    <td class=\"left\">$lastused</td>
                  </tr>\n";
	}
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	echo "<tr>
                <td>Load Partition: </td>
                <td class=\"left\">$loadpart</td>
              </tr>\n";

	echo "<tr>
                <td>Load Length: </td>
                <td class=\"left\">$loadlength</td>
              </tr>\n";

	if ($part1_osid) {
	    echo "<tr>
                     <td>Partition 1 OS: </td>
                     <td class=\"left\">";
	    SpitOSIDLink($part1_osid);
	    echo "   </td>
                  </tr>\n";
	}

	if ($part2_osid) {
	    echo "<tr>
                     <td>Partition 2 OS: </td>
                     <td class=\"left\">";
	    SpitOSIDLink($part2_osid);
	    echo "   </td>
                  </tr>\n";
	}

	if ($part3_osid) {
	    echo "<tr>
                     <td>Partition 3 OS: </td>
                     <td class=\"left\">";
	    SpitOSIDLink($part3_osid);
	    echo "   </td>
                  </tr>\n";
	}

	if ($part4_osid) {
	    echo "<tr>
                     <td>Partition 4 OS: </td>
                     <td class=\"left\">";
	    SpitOSIDLink($part4_osid);
	    echo "   </td>
                  </tr>\n";
	}

	if ($default_osid) {
	    echo "<tr>
                     <td>Boot OS: </td>
                     <td class=\"left\">";
	    SpitOSIDLink($default_osid);
	    echo "   </td>
                  </tr>\n";
	}

	echo "<tr>
                <td>Filename: </td>
                <td class=left>\n";
	echo "$path";
	echo "  </td>
              </tr>\n";

	echo "<tr>
                  <td>Types: </td>
                  <td class=left>\n";
	echo "&nbsp;";
	foreach ($this->Types() as $type) {
	    echo "$type &nbsp; ";
	}
	echo "  </td>
              </tr>\n";

	echo "<tr>
                <td>Shared?: </td>
                <td class=left>\n";
	if ($shared)
	    echo "Yes";
	else
	    echo "No";
    
	echo "  </td>
              </tr>\n";

	echo "<tr>
                <td>Global?: </td>
                <td class=left>\n";

783 784
	$globalflip = ($globalid ? 0 : 1);
	$globalval  = ($globalid ? "Yes" : "No");
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	echo "$globalval (<a href='toggle.php?imageid=$imageid".
	    "&type=imageglobal&value=$globalflip'>Toggle</a>)";
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	echo "  </td>
              </tr>\n";

	echo "<tr>
791 792
                <td>Internal ID (Vers): </td>
                <td class=left>$imageid ($version)</td>
793 794
              </tr>\n";

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	if ($this->parent_imageid()) {
	    $p_imageid   = $this->parent_imageid();
	    $p_version   = $this->parent_version();
	    $p_image     = Image::Lookup($p_imageid, $p_version);
	    $p_imagename = $p_image->imagename();
	    $p_url       = CreateURL("showimageid", $p_image,
				      "version", $p_version);
	    
	    echo "<tr>
                    <td>Derived from: </td>
                    <td class=left><a href='$p_url'>$p_imagename</a></td>
                  </tr>\n";

	    if ($this->parent_imageid() != $this->imageid() &&
		$this->version() > 0) {
810
		$p_version   = $this->version() - 1;
811
		$p_url       = CreateURL("showimageid", $this,
812
					 "version", $p_version);
813 814
		echo "<tr>
                        <td>Previous Vers: </td>
815 816
                        <td class=left>
                            <a href='$p_url'>$imagename ($p_version)</a></td>
817 818
                      </tr>\n";
	    }
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	}
	# Look for an unreleased version of this image.
	$unreleased = $this->LookupUnreleased();
	if ($unreleased && $unreleased->version() != $this->version()) {
	    $u_version = $unreleased->version();
	    $u_url     = CreateURL("showimageid", $this, "version", $u_version);

	    echo "<tr>
                    <td>Unreleased Vers: </td>
                    <td class=left>
                         <a href='$u_url'>$imagename ($u_version)</a></td>
                  </tr>\n";
	}
	if ($DOPROVENANCE) {
	    $released = $this->released();
	    $ready    = $this->ready();
	    $isdelta   = $this->isdelta();
	    
	    echo "<tr>
                    <td>Rdy/Rel/Delta: </td>
                    <td class=left>$ready/$released/$isdelta</td>
                  </tr>\n";
	}
842

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	echo "<tr>
                <td>MBR Version: </td>
                <td class=left>$mbr_version</td>
              </tr>\n";

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	# Until I change the schema.
	if ($mbr_version == 99) {
	    echo "<tr>
                    <td>XEN Package: </td>
                    <td class=left>Yes</td>
                  </tr>\n";
	}
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	if ($this->ezid()) {
	    $doesxen = 0;
	    $osinfo = OSinfo::Lookup($imageid);
	    if ($osinfo && $osinfo->def_parentosid()) {
		$parentosinfo = OSinfo::Lookup($osinfo->def_parentosid());
		if ($parentosinfo &&
		    $parentosinfo->FeatureSupported("xen-host")) {
		    $doesxen = 1;
		}
	    }
	    $xenval  = ($doesxen ? "Yes" : "No");
	    $xenflip = ($doesxen ? 0 : 1);

	    echo "<tr>
                  <td>XEN Capable?:</td>
   	          <td class=left>
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                     $xenval (<a href='toggle.php?imageid=$imageid".
		          "&type=imagedoesxen&value=$xenflip'>Toggle</a>
873 874 875 876 877 878 879
                      if you know this image can run
               as a XEN guest. More info
               <a target=_blank
                  href='https://wiki.emulab.net/wiki/Emulab/wiki/xen'>here</a>)
              </td>
             </tr>\n";
	}
880

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	if ($hash) {
	    echo "<tr>
                    <td>SHA1 Hash: </td>
                    <td class=left>$hash</td>
                  </tr>\n";
	}

888 889 890 891 892
	echo "<tr>
                <td>UUID: </td>
                <td class=left>$uuid</td>
              </tr>\n";

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	echo "<tr>
                <td>Metadata URL: </td>
                <td class=left><a href='$metadata_url'>https:// ...</a></td>
              </tr>\n";

	if ($imagefile_url) {
	    echo "<tr>
                   <td>Image File URL: </td>
                   <td class=left><a href='$imagefile_url'>https:// ...</a></td>
                  </tr>\n";
	}

905 906 907 908 909
	#
	# Show who all can access this image outside the project.
	#
	if ($showperms) {
	    $query_result =
910
		DBQueryFatal("select distinct * from image_permissions ".
911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956
			     "where imageid='$imageid' ".
			     "order by permission_type,permission_id");
	    if (mysql_num_rows($query_result)) {
		echo "<tr>
                      <td align=center colspan=2>
                      External permissions
                      </td>
                  </tr>\n";

		while ($row = mysql_fetch_array($query_result)) {
		    $perm_type = $row['permission_type'];
		    $perm_idx  = $row['permission_idx'];
		    $writable  = $row['allow_write'];

		    if ($writable) {
			$writable = "(read/write)";
		    }
		    else {
			$writable = "(read only)";
		    }

		    if ($perm_type == "user") {
			$user = User::Lookup($perm_idx);
			if (isset($user)) {
			    $uid = $user->uid();
			    echo "<tr>
                                    <td>User: </td>
                                    <td class=left>$uid $writable</td>
                                  </tr>\n";
			}
		    }
		    elseif ($perm_type == "group") {
			$group = Group::Lookup($perm_idx);
			if (isset($group)) {
			    $pid = $group->pid();
			    $gid = $group->gid();
			    echo "<tr>
                                    <td>Group: </td>
                                    <td class=left>$pid/$gid $writable</td>
                                  </tr>\n";
			}
		    }
		}
	    }
	}

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	echo "</table>\n";
    }

    #
    # See if an image is inuse.
    #
    function InUse() {
	$imageid = $this->imageid();

	$query_result1 =
	    DBQueryFatal("select * from current_reloads ".
			 "where image_id='$imageid'");
	$query_result2 =
	    DBQueryFatal("select * from scheduled_reloads ".
			 "where image_id='$imageid'");
	$query_result3 =
	    DBQueryFatal("select * from node_type_attributes ".
			 "where attrkey='default_imageid' and ".
			 "      attrvalue='$imageid' limit 1");

	if (mysql_num_rows($query_result1) ||
	    mysql_num_rows($query_result2) ||
	    mysql_num_rows($query_result3)) {
	    return 1;
	}
	return 0;
    }
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    function GetLogfile() {
	$this->Refresh();
	
	if ($this->logfileid()) 
	    return Logfile::Lookup($this->logfileid());
	return null;
    }
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    function DoesXen($does) {
	$imageid = $this->imageid();
995
	$version = $this->version();
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	if ($does) {
	    $parentosinfo = OSinfo::LookupByName("emulab-ops",
999
						 "XEN43-64-STD");
1000
	    if (!$parentosinfo) {
1001 1002
		$parentosinfo = OSinfo::LookupByName("emulab-ops",
						     "XEN41-64-STD");
1003 1004 1005 1006
		return -1;
	    }
	    $parentosid = $parentosinfo->osid();

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	    DBQueryFatal("update os_info_versions set ".
			 "    def_parentosid='$parentosid' ".
			 "where osid='$imageid and vers='$version'");
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	    DBQueryFatal("replace into os_submap set ".
			 "  osid='$imageid', parent_osid='$parentosid'");
	    DBQueryFatal("replace into osidtoimageid set ".
			 " osid='$imageid', type='pcvm', imageid='$imageid'");
	}
	else {
	    DBQueryFatal("delete from osidtoimageid ".
			 "where osid='$imageid' and type='pcvm'");
	    DBQueryFatal("delete from os_submap ".
			 "where osid='$imageid'");
1020 1021
	    DBQueryFatal("update os_info_versions set def_parentosid=NULL ".
			 "where osid='$imageid' and vers='$version'");
1022 1023 1024
	}
	return 0;
    }
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    #
    # Page header; spit back some html for the typical page header.
    #
    function PageHeader() {
	$pid = $this->pid();
	$imagename = $this->imagename();
	$imageid = $this->imageid();
	$version = $this->version();
	
	$html = "<font size=+1>Image <b>".
	    "<a href='showproject.php3?pid=$pid'>$pid</a>/".
	    "<a href='showimageid.php3?imageid=$imageid&version=$version'>
                $imagename</a>".
	    "</b></font>\n";

	return $html;
    }
1043
}