feat: Visualize active iSCSI sessions

dist/adastra-vtl-installer/VERSION

@@ -1,4 +1,4 @@
 Adastra VTL Installer
 Version: 1.0.0
-Build Date: 2025-12-10 14:40:16
+Build Date: 2025-12-10 14:48:16
 Build Host: vtl-dev

dist/adastra-vtl-installer/web-ui/api.php

@@ -177,7 +177,8 @@ switch ($action) {
 function listTargets() {
     $output = [];
     $returnCode = 0;
-    exec('sudo tgtadm --lld iscsi --mode target --op show 2>&1', $output, $returnCode);
+    // Use absolute path
+    exec('sudo /usr/sbin/tgtadm --lld iscsi --mode target --op show 2>&1', $output, $returnCode);
 
     if ($returnCode !== 0) {
         echo json_encode([
@@ -189,34 +190,86 @@ function listTargets() {
 
     $targets = [];
     $currentTarget = null;
-    $inACLSection = false;
+    $currentSession = null;
+    $section = ''; // 'acl', 'nexus', 'account', etc.
 
     foreach ($output as $line) {
+        // Check for new Target start
         if (preg_match('/^Target (\d+): (.+)$/', $line, $matches)) {
+            // Save previous target and session
             if ($currentTarget) {
+                if ($currentSession) {
+                    $currentTarget['sessions'][] = $currentSession;
+                    $currentSession = null;
+                }
                 $targets[] = $currentTarget;
             }
             $currentTarget = [
                 'tid' => intval($matches[1]),
                 'name' => trim($matches[2]),
                 'luns' => 0,
-                'acls' => 0
+                'acls' => 0,
+                'sessions' => []
             ];
-            $inACLSection = false;
+            $section = '';
-        } elseif ($currentTarget && preg_match('/^\s+LUN: (\d+)/', $line)) {
+        } elseif ($currentTarget) {
-            $currentTarget['luns']++;
+            // Check for LUNs (also simple check for count)
-            $inACLSection = false;
+            if (preg_match('/^\s+LUN: (\d+)/', $line)) {
-        } elseif ($currentTarget && preg_match('/^\s+ACL information:/', $line)) {
+                $currentTarget['luns']++;
-            $inACLSection = true;
+                // If we were parsing a session, save it as LUN info usually means we left nexus section or are in LUN section
-        } elseif ($currentTarget && $inACLSection && preg_match('/^\s+(.+)$/', $line, $matches)) {
+                 if ($currentSession) {
-            $acl = trim($matches[1]);
+                    $currentTarget['sessions'][] = $currentSession;
-            if (!empty($acl) && !preg_match('/^(Account|I_T nexus|LUN|System)/', $acl)) {
+                    $currentSession = null;
-                $currentTarget['acls']++;
+                }
+            } 
+            // Section Headers
+            elseif (preg_match('/^\s+ACL information:/', $line)) {
+                $section = 'acl';
+                if ($currentSession) { $currentTarget['sessions'][] = $currentSession; $currentSession = null; }
+            } 
+            elseif (preg_match('/^\s+I_T nexus information:/', $line)) {
+                $section = 'nexus';
+            }
+            elseif (preg_match('/^\s+Account information:/', $line)) {
+                $section = 'account'; // Ignore or handle if needed
+                if ($currentSession) { $currentTarget['sessions'][] = $currentSession; $currentSession = null; }
+            }
+            
+            // ACL Section Content
+            elseif ($section === 'acl' && preg_match('/^\s+(.+)$/', $line, $matches)) {
+                $content = trim($matches[1]);
+                // Filter out headers if regex matches them by accident (though section logic prevents this usually)
+                if (!empty($content) && !preg_match('/^(Account|I_T nexus|LUN|System)/', $content)) {
+                    $currentTarget['acls']++;
+                }
+            }
+            
+            // I_T Nexus Section Content (Sessions)
+            elseif ($section === 'nexus') {
+                if (preg_match('/^\s+I_T nexus: (\d+)/', $line, $matches)) {
+                    // New session found
+                    if ($currentSession) {
+                        $currentTarget['sessions'][] = $currentSession;
+                    }
+                    $currentSession = [
+                        'nexus_id' => $matches[1],
+                        'initiator' => 'Unknown',
+                        'ip' => 'Unknown'
+                    ];
+                } elseif ($currentSession && preg_match('/^\s+Initiator: (.+)$/', $line, $matches)) {
+                    $currentSession['initiator'] = trim($matches[1]);
+                } elseif ($currentSession && preg_match('/^\s+IP Address: (.+)$/', $line, $matches)) {
+                    $currentSession['ip'] = trim($matches[1]);
+                }
             }
         }
     }
 
+    // Save last items
     if ($currentTarget) {
+        if ($currentSession) {
+            $currentTarget['sessions'][] = $currentSession;
+        }
         $targets[] = $currentTarget;
     }
 

dist/adastra-vtl-installer/web-ui/index.html

@@ -404,6 +404,32 @@
                 </div>
             </div>
 
+            <div class="card" style="margin-top: 1rem;">
+                <div class="card-header">
+                    <h3>👥 Active Client Sessions</h3>
+                    <button class="btn btn-primary btn-small" onclick="loadTargets()">
+                        <span>🔄</span> Refresh
+                    </button>
+                </div>
+                <div class="card-body">
+                    <table class="tape-table">
+                        <thead>
+                            <tr>
+                                <th>Target</th>
+                                <th>Initiator Name (Client)</th>
+                                <th>IP Address</th>
+                            </tr>
+                        </thead>
+                        <tbody id="iscsi-sessions-body">
+                            <!-- JS populates this -->
+                        </tbody>
+                    </table>
+                    <div id="no-sessions-msg" class="alert alert-info" style="display: none; margin-top: 0.5rem;">
+                        No active sessions found.
+                    </div>
+                </div>
+            </div>
+
             <div class="card" style="margin-top: 1rem;">
                 <div class="card-header">
                     <h3>➕ Create New Target</h3>

dist/adastra-vtl-installer/web-ui/script.js

@@ -1029,6 +1029,38 @@ function loadTargets() {
                         </td>
                     </tr>
                 `).join('');
+
+                    // Update Active Sessions Table
+                    const sessionTbody = document.getElementById('iscsi-sessions-body');
+                    const noSessionsMsg = document.getElementById('no-sessions-msg');
+                    let hasSessions = false;
+
+                    if (sessionTbody) {
+                        let sessionsHtml = '';
+                        data.targets.forEach(target => {
+                            if (target.sessions && target.sessions.length > 0) {
+                                target.sessions.forEach(session => {
+                                    hasSessions = true;
+                                    sessionsHtml += `
+                                <tr>
+                                    <td>
+                                        <strong>TID ${target.tid}</strong><br>
+                                        <small style="font-size:0.75rem; color:#888;">${target.name}</small>
+                                    </td>
+                                    <td><code>${session.initiator}</code></td>
+                                    <td><span class="badge badge-success">${session.ip}</span></td>
+                                </tr>
+                                `;
+                                });
+                            }
+                        });
+
+                        sessionTbody.innerHTML = sessionsHtml;
+
+                        if (noSessionsMsg) {
+                            noSessionsMsg.style.display = hasSessions ? 'none' : 'block';
+                        }
+                    }
                 }
             } else {
                 showNotification(data.error, 'error');

web-ui/api.php

@@ -177,7 +177,8 @@ switch ($action) {
 function listTargets() {
     $output = [];
     $returnCode = 0;
-    exec('sudo tgtadm --lld iscsi --mode target --op show 2>&1', $output, $returnCode);
+    // Use absolute path
+    exec('sudo /usr/sbin/tgtadm --lld iscsi --mode target --op show 2>&1', $output, $returnCode);
 
     if ($returnCode !== 0) {
         echo json_encode([
@@ -189,34 +190,86 @@ function listTargets() {
 
     $targets = [];
     $currentTarget = null;
-    $inACLSection = false;
+    $currentSession = null;
+    $section = ''; // 'acl', 'nexus', 'account', etc.
 
     foreach ($output as $line) {
+        // Check for new Target start
         if (preg_match('/^Target (\d+): (.+)$/', $line, $matches)) {
+            // Save previous target and session
             if ($currentTarget) {
+                if ($currentSession) {
+                    $currentTarget['sessions'][] = $currentSession;
+                    $currentSession = null;
+                }
                 $targets[] = $currentTarget;
             }
             $currentTarget = [
                 'tid' => intval($matches[1]),
                 'name' => trim($matches[2]),
                 'luns' => 0,
-                'acls' => 0
+                'acls' => 0,
+                'sessions' => []
             ];
-            $inACLSection = false;
+            $section = '';
-        } elseif ($currentTarget && preg_match('/^\s+LUN: (\d+)/', $line)) {
+        } elseif ($currentTarget) {
-            $currentTarget['luns']++;
+            // Check for LUNs (also simple check for count)
-            $inACLSection = false;
+            if (preg_match('/^\s+LUN: (\d+)/', $line)) {
-        } elseif ($currentTarget && preg_match('/^\s+ACL information:/', $line)) {
+                $currentTarget['luns']++;
-            $inACLSection = true;
+                // If we were parsing a session, save it as LUN info usually means we left nexus section or are in LUN section
-        } elseif ($currentTarget && $inACLSection && preg_match('/^\s+(.+)$/', $line, $matches)) {
+                 if ($currentSession) {
-            $acl = trim($matches[1]);
+                    $currentTarget['sessions'][] = $currentSession;
-            if (!empty($acl) && !preg_match('/^(Account|I_T nexus|LUN|System)/', $acl)) {
+                    $currentSession = null;
-                $currentTarget['acls']++;
+                }
+            } 
+            // Section Headers
+            elseif (preg_match('/^\s+ACL information:/', $line)) {
+                $section = 'acl';
+                if ($currentSession) { $currentTarget['sessions'][] = $currentSession; $currentSession = null; }
+            } 
+            elseif (preg_match('/^\s+I_T nexus information:/', $line)) {
+                $section = 'nexus';
+            }
+            elseif (preg_match('/^\s+Account information:/', $line)) {
+                $section = 'account'; // Ignore or handle if needed
+                if ($currentSession) { $currentTarget['sessions'][] = $currentSession; $currentSession = null; }
+            }
+            
+            // ACL Section Content
+            elseif ($section === 'acl' && preg_match('/^\s+(.+)$/', $line, $matches)) {
+                $content = trim($matches[1]);
+                // Filter out headers if regex matches them by accident (though section logic prevents this usually)
+                if (!empty($content) && !preg_match('/^(Account|I_T nexus|LUN|System)/', $content)) {
+                    $currentTarget['acls']++;
+                }
+            }
+            
+            // I_T Nexus Section Content (Sessions)
+            elseif ($section === 'nexus') {
+                if (preg_match('/^\s+I_T nexus: (\d+)/', $line, $matches)) {
+                    // New session found
+                    if ($currentSession) {
+                        $currentTarget['sessions'][] = $currentSession;
+                    }
+                    $currentSession = [
+                        'nexus_id' => $matches[1],
+                        'initiator' => 'Unknown',
+                        'ip' => 'Unknown'
+                    ];
+                } elseif ($currentSession && preg_match('/^\s+Initiator: (.+)$/', $line, $matches)) {
+                    $currentSession['initiator'] = trim($matches[1]);
+                } elseif ($currentSession && preg_match('/^\s+IP Address: (.+)$/', $line, $matches)) {
+                    $currentSession['ip'] = trim($matches[1]);
+                }
             }
         }
     }
 
+    // Save last items
     if ($currentTarget) {
+        if ($currentSession) {
+            $currentTarget['sessions'][] = $currentSession;
+        }
         $targets[] = $currentTarget;
     }
 

web-ui/index.html

@@ -404,6 +404,32 @@
                 </div>
             </div>
 
+            <div class="card" style="margin-top: 1rem;">
+                <div class="card-header">
+                    <h3>👥 Active Client Sessions</h3>
+                    <button class="btn btn-primary btn-small" onclick="loadTargets()">
+                        <span>🔄</span> Refresh
+                    </button>
+                </div>
+                <div class="card-body">
+                    <table class="tape-table">
+                        <thead>
+                            <tr>
+                                <th>Target</th>
+                                <th>Initiator Name (Client)</th>
+                                <th>IP Address</th>
+                            </tr>
+                        </thead>
+                        <tbody id="iscsi-sessions-body">
+                            <!-- JS populates this -->
+                        </tbody>
+                    </table>
+                    <div id="no-sessions-msg" class="alert alert-info" style="display: none; margin-top: 0.5rem;">
+                        No active sessions found.
+                    </div>
+                </div>
+            </div>
+
             <div class="card" style="margin-top: 1rem;">
                 <div class="card-header">
                     <h3>➕ Create New Target</h3>

web-ui/script.js

@@ -1029,6 +1029,38 @@ function loadTargets() {
                         </td>
                     </tr>
                 `).join('');
+
+                    // Update Active Sessions Table
+                    const sessionTbody = document.getElementById('iscsi-sessions-body');
+                    const noSessionsMsg = document.getElementById('no-sessions-msg');
+                    let hasSessions = false;
+
+                    if (sessionTbody) {
+                        let sessionsHtml = '';
+                        data.targets.forEach(target => {
+                            if (target.sessions && target.sessions.length > 0) {
+                                target.sessions.forEach(session => {
+                                    hasSessions = true;
+                                    sessionsHtml += `
+                                <tr>
+                                    <td>
+                                        <strong>TID ${target.tid}</strong><br>
+                                        <small style="font-size:0.75rem; color:#888;">${target.name}</small>
+                                    </td>
+                                    <td><code>${session.initiator}</code></td>
+                                    <td><span class="badge badge-success">${session.ip}</span></td>
+                                </tr>
+                                `;
+                                });
+                            }
+                        });
+
+                        sessionTbody.innerHTML = sessionsHtml;
+
+                        if (noSessionsMsg) {
+                            noSessionsMsg.style.display = hasSessions ? 'none' : 'block';
+                        }
+                    }
                 }
             } else {
                 showNotification(data.error, 'error');