tools: open real offline frmP2PChat window

2026-07-11 20:58:26 +08:00
parent a06fe60eb2
commit 811f760efe
5 changed files with 935 additions and 0 deletions
--- a/scripts/extract-frmP2PChat-il-risk.ps1
+++ b/scripts/extract-frmP2PChat-il-risk.ps1
@@ -0,0 +1,118 @@
+param(
+    [string]$IlFile = "runs/offline-evidence-intake/zyl-qqfile-20260709/metadata/c28-il/IMPlatformClient.exe.il",
+    [string]$OutDir = "runs/offline-chat-window"
+)
+
+$ErrorActionPreference = "Stop"
+$repo = Resolve-Path -LiteralPath (Join-Path $PSScriptRoot "..")
+
+function Resolve-RepoPath([string]$PathValue) {
+    if ([System.IO.Path]::IsPathRooted($PathValue)) {
+        return $PathValue
+    }
+    return (Join-Path $repo $PathValue)
+}
+
+$ilFull = Resolve-RepoPath $IlFile
+$outFull = Resolve-RepoPath $OutDir
+if (-not (Test-Path -LiteralPath $ilFull)) {
+    throw "IL file not found: $ilFull"
+}
+New-Item -ItemType Directory -Force -Path $outFull | Out-Null
+
+$lines = Get-Content -LiteralPath $ilFull
+$endIndex = $null
+for ($i = 0; $i -lt $lines.Count; $i++) {
+    if ($lines[$i] -match 'end of method frmP2PChat::\.ctor') {
+        $endIndex = $i
+        break
+    }
+}
+if ($null -eq $endIndex) {
+    throw "frmP2PChat::.ctor end marker not found"
+}
+
+$startIndex = $null
+for ($i = $endIndex; $i -ge 0; $i--) {
+    if ($lines[$i] -match '^\s*\.method\s+public\s+hidebysig\s+specialname\s+rtspecialname') {
+        $startIndex = $i
+        break
+    }
+}
+if ($null -eq $startIndex) {
+    throw "frmP2PChat::.ctor method start not found before line $($endIndex + 1)"
+}
+
+$ctorIlFile = Join-Path $outFull "frmP2PChat-ctor.il.txt"
+$riskCsvFile = Join-Path $outFull "frmP2PChat-ctor-null-risk.csv"
+$riskMdFile = Join-Path $outFull "frmP2PChat-ctor-null-risk.md"
+
+$ctorLines = New-Object System.Collections.Generic.List[string]
+for ($i = $startIndex; $i -le $endIndex; $i++) {
+    $ctorLines.Add(("{0}: {1}" -f ($i + 1), $lines[$i]))
+}
+$ctorLines | Set-Content -LiteralPath $ctorIlFile -Encoding UTF8
+
+$riskRows = New-Object System.Collections.Generic.List[object]
+foreach ($entry in $ctorLines) {
+    if ($entry -notmatch '\b(callvirt|ldfld)\b') {
+        continue
+    }
+    $offset = $null
+    if ($entry -match '(IL_[0-9a-fA-F]{4})') {
+        $offset = $matches[1].ToLowerInvariant().Replace("il_", "IL_")
+    }
+    $op = if ($entry -match '\b(callvirt|ldfld)\b') { $matches[1] } else { $null }
+    $target = ($entry -replace '^.*?\b(callvirt|ldfld)\b\s+', '').Trim()
+    $riskRows.Add([pscustomobject]@{
+        source_line = [int]($entry -replace '^(\d+):.*$', '$1')
+        il_offset = $offset
+        opcode = $op
+        target = $target
+        null_risk = if ($op -eq "callvirt") { "receiver_null_possible" } else { "instance_field_owner_null_possible" }
+        evidence = $entry.Trim()
+    })
+}
+
+$riskRows | Sort-Object source_line | Export-Csv -LiteralPath $riskCsvFile -NoTypeInformation -Encoding UTF8
+
+$topEvidence = $riskRows |
+    Where-Object {
+        $_.target -match 'Connection::add_OnConnectError|Connection::add_OnReConnectOk|P2PChat::get_OtherJid|Jid::getBareJid|IMPPManager::get_UserInfo|UCChatSendMessageBox::GetChatRichTextBox|UCChatSendMessageBox::GetReceiptCheckBox|MessageCenter::add_OnTcpMessageArrived|RosterManager::UpdateStrangerStatus|BaseConfig::VisualPhoneEnable'
+    } |
+    Select-Object -First 40
+
+$md = New-Object System.Collections.Generic.List[string]
+$md.Add("# frmP2PChat constructor IL NullRisk")
+$md.Add("")
+$md.Add("- Source IL: $ilFull")
+$md.Add("- Constructor source lines: $($startIndex + 1)-$($endIndex + 1)")
+$md.Add("- Constructor line count: $($ctorLines.Count)")
+$md.Add("- callvirt / ldfld risk rows: $($riskRows.Count)")
+$md.Add("")
+$md.Add("## High-signal risks")
+$md.Add("")
+$md.Add("| source_line | il_offset | opcode | target |")
+$md.Add("|---:|---|---|---|")
+foreach ($row in $topEvidence) {
+    $target = ($row.target -replace '\|', '\\|')
+    $md.Add("| $($row.source_line) | $($row.il_offset) | $($row.opcode) | $target |")
+}
+$md.Add("")
+$md.Add("## Files")
+$md.Add("")
+$md.Add("- Full constructor IL: $ctorIlFile")
+$md.Add("- Full NullRisk CSV: $riskCsvFile")
+$md | Set-Content -LiteralPath $riskMdFile -Encoding UTF8
+
+[pscustomobject]@{
+    ok = $true
+    il_file = $ilFull
+    ctor_line_start = $startIndex + 1
+    ctor_line_end = $endIndex + 1
+    ctor_line_count = $ctorLines.Count
+    risk_count = $riskRows.Count
+    ctor_il_file = $ctorIlFile
+    risk_csv_file = $riskCsvFile
+    risk_md_file = $riskMdFile
+} | ConvertTo-Json -Compress