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main.go
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package main
import (
"bufio"
"context"
"encoding/json"
"flag"
"fmt"
"io/ioutil"
"math"
"net/http"
"os"
"regexp"
"strconv"
"strings"
"sync"
"time"
"github.com/PuerkitoBio/goquery"
"github.com/chromedp/chromedp"
"github.com/fatih/color"
)
// Signatures holds the patterns and vulnerability data for Swagger UI versions
type Signatures struct {
VersionPatterns map[string]VersionSignature
}
// VersionSignature contains signature information for a specific Swagger version
type VersionSignature struct {
BasePatterns []Pattern
DomPatterns []Pattern
FilePatterns []Pattern
SpecificVersion map[string]SpecificVersionSig
}
// SpecificVersionSig contains signature for a specific version number
type SpecificVersionSig struct {
Patterns []Pattern
Vulnerabilities []string
}
// Pattern represents a detection pattern
type Pattern struct {
Pattern string
Confidence float64
Type string
}
// DetectionResult stores the results of Swagger UI version detection
type DetectionResult struct {
URL string `json:"url"`
MajorVersion string `json:"major_version"`
SpecificVersion string `json:"specific_version,omitempty"`
Confidence float64 `json:"confidence"`
Vulnerabilities []string `json:"vulnerabilities,omitempty"`
DetectionMethod string `json:"detection_method,omitempty"`
Error string `json:"error,omitempty"`
}
// ResourceData contains all fetched resources from a URL
type ResourceData struct {
HTML string
JS map[string]string
Headers http.Header
}
// Global signatures database (This is only used when the Javascript signature fails, which is very unlikely. You can also find these code pattern signatures in the old code and since it produces redundant results this shall be deprecated soon.)
var signaturesDB Signatures
func init() {
// Initialize signatures database programmatically
signaturesDB = Signatures{
VersionPatterns: map[string]VersionSignature{
"1.x": {
BasePatterns: []Pattern{
{Pattern: `SwaggerApi`, Confidence: 0.7, Type: "js"},
{Pattern: `SwaggerService`, Confidence: 0.7, Type: "js"},
{Pattern: `swaggerUI`, Confidence: 0.8, Type: "js"},
},
DomPatterns: []Pattern{
{Pattern: ".swagger-ui-wrap", Confidence: 0.7, Type: "html"},
{Pattern: "#resources_container", Confidence: 0.7, Type: "html"},
{Pattern: ".resource_list", Confidence: 0.6, Type: "html"},
},
FilePatterns: []Pattern{
{Pattern: "swagger-ui.js", Confidence: 0.5, Type: "file"},
{Pattern: "swagger.js", Confidence: 0.5, Type: "file"},
},
SpecificVersion: map[string]SpecificVersionSig{
"1.0.0": {
Patterns: []Pattern{
{Pattern: `version:[\"\']1\.0\.0[\"\']`, Confidence: 1.0, Type: "js"},
},
Vulnerabilities: []string{"Medium: XSS in parameter rendering", "Medium: Information disclosure"},
},
"1.1.0-1.2.5": {
Patterns: []Pattern{
{Pattern: `version:[\"\']1\.[1-2]\.`, Confidence: 0.95, Type: "js"},
},
Vulnerabilities: []string{"Medium: XSS in parameter rendering", "Medium: Information disclosure"},
},
},
},
"2.x": {
BasePatterns: []Pattern{
{Pattern: `window\.SwaggerUi=Backbone\.Router\.extend`, Confidence: 0.9, Type: "js"},
{Pattern: `SwaggerUi\.Views\.OperationView`, Confidence: 0.8, Type: "js"},
{Pattern: `SwaggerUi\.Collections`, Confidence: 0.8, Type: "js"},
{Pattern: `SwaggerUi\.partials\.signature`, Confidence: 0.9, Type: "js"},
{Pattern: `JSONEditor\.defaults\.iconlibs\.swagger`, Confidence: 0.7, Type: "js"},
},
DomPatterns: []Pattern{
{Pattern: ".swagger-section", Confidence: 0.7, Type: "html"},
{Pattern: "#swagger-ui-container", Confidence: 0.8, Type: "html"},
{Pattern: ".swagger-ui-wrap", Confidence: 0.7, Type: "html"},
},
FilePatterns: []Pattern{
{Pattern: "swagger-ui.min.js", Confidence: 0.6, Type: "file"},
{Pattern: "swagger-ui.js", Confidence: 0.6, Type: "file"},
},
SpecificVersion: map[string]SpecificVersionSig{
"2.0.24": {
Patterns: []Pattern{
{Pattern: `version:[\"\']2\.0\.24[\"\']`, Confidence: 1.0, Type: "js"},
{Pattern: `SwaggerUi:version=[\"\']2\.0\.24[\"\']`, Confidence: 1.0, Type: "js"},
},
Vulnerabilities: []string{"Medium: XSS CVE-2016-5204"},
},
"2.1.0-2.1.6": {
Patterns: []Pattern{
{Pattern: `version:[\"\']2\.1\.`, Confidence: 0.95, Type: "js"},
},
Vulnerabilities: []string{"Critical: XSS in JSON Editor"},
},
"2.2.0-2.2.10": {
Patterns: []Pattern{
{Pattern: `version:[\"\']2\.2\.`, Confidence: 0.95, Type: "js"},
},
Vulnerabilities: []string{"High: XSS in parameter fields (CVE-2018-7753)"},
},
},
},
"3.x": {
BasePatterns: []Pattern{
{Pattern: `swagger-ui-react`, Confidence: 0.9, Type: "js"},
{Pattern: `swagger-ui-standalone-preset`, Confidence: 0.9, Type: "js"},
{Pattern: `SwaggerUIBundle`, Confidence: 0.95, Type: "js"},
{Pattern: `SwaggerUIStandalonePreset`, Confidence: 0.9, Type: "js"},
{Pattern: `window\.ui=SwaggerUIBundle`, Confidence: 0.8, Type: "js"},
},
DomPatterns: []Pattern{
{Pattern: "#swagger-ui", Confidence: 0.8, Type: "html"},
{Pattern: ".swagger-ui", Confidence: 0.7, Type: "html"},
{Pattern: ".opblock", Confidence: 0.8, Type: "html"},
{Pattern: ".information-container", Confidence: 0.7, Type: "html"},
},
FilePatterns: []Pattern{
{Pattern: "swagger-ui-bundle.js", Confidence: 0.8, Type: "file"},
{Pattern: "swagger-ui.css", Confidence: 0.6, Type: "file"},
{Pattern: "swagger-ui-standalone-preset.js", Confidence: 0.8, Type: "file"},
},
SpecificVersion: map[string]SpecificVersionSig{
"3.0.0-3.0.21": {
Patterns: []Pattern{
{Pattern: `version:[\"\']3\.0\.`, Confidence: 0.95, Type: "js"},
},
Vulnerabilities: []string{"Medium: XSS CVE-2018-3760", "Medium: XSS in URL parsing"},
},
"3.1.0-3.3.2": {
Patterns: []Pattern{
{Pattern: `version:[\"\']3\.[1-3]\.`, Confidence: 0.95, Type: "js"},
},
Vulnerabilities: []string{"Medium: XSS in URL handling", "Medium: CORS misconfiguration vulnerability"},
},
"3.4.0-3.17.0": {
Patterns: []Pattern{
{Pattern: `version:[\"\']3\.[4-9]\.`, Confidence: 0.95, Type: "js"},
{Pattern: `version:[\"\']3\.1[0-7]\.`, Confidence: 0.95, Type: "js"},
},
Vulnerabilities: []string{"Medium: XSS via Swagger JSON/YAML definitions", "Medium: CORS misconfiguration"},
},
"3.18.0-3.20.9": {
Patterns: []Pattern{
{Pattern: `version:[\"\']3\.1[8-9]\.`, Confidence: 0.95, Type: "js"},
{Pattern: `version:[\"\']3\.20\.`, Confidence: 0.95, Type: "js"},
},
Vulnerabilities: []string{"Medium: XSS in older 3.20.x"},
},
"3.21.0-3.22.3": {
Patterns: []Pattern{
{Pattern: `version:[\"\']3\.2[1-2]\.`, Confidence: 0.95, Type: "js"},
},
Vulnerabilities: []string{"Medium: JSON parsing vulnerabilities"},
},
"3.23.0-3.38.0": {
Patterns: []Pattern{
{Pattern: `version:[\"\']3\.2[3-9]\.`, Confidence: 0.95, Type: "js"},
{Pattern: `version:[\"\']3\.3[0-8]\.`, Confidence: 0.95, Type: "js"},
},
Vulnerabilities: []string{"Medium: SSRF in validator module"},
},
"3.39.0-3.52.1": {
Patterns: []Pattern{
{Pattern: `version:[\"\']3\.[3-5][9-9]\.`, Confidence: 0.95, Type: "js"},
},
Vulnerabilities: []string{"Medium: SSRF in validator module (pre-4.0)"},
},
},
},
"4.x": {
BasePatterns: []Pattern{
{Pattern: `swagger-ui/dist/swagger-ui.css`, Confidence: 0.8, Type: "js"},
{Pattern: `swagger-ui-react/swagger-ui.css`, Confidence: 0.8, Type: "js"},
{Pattern: `SwaggerUIBundle`, Confidence: 0.7, Type: "js"}, // Also in 3.x
{Pattern: `SwaggerUI.plugins`, Confidence: 0.8, Type: "js"},
},
DomPatterns: []Pattern{
{Pattern: "#swagger-ui", Confidence: 0.6, Type: "html"}, // Also in 3.x
{Pattern: ".swagger-ui", Confidence: 0.6, Type: "html"}, // Also in 3.x
{Pattern: ".opblock-summary-description", Confidence: 0.7, Type: "html"},
},
FilePatterns: []Pattern{
{Pattern: "swagger-ui.v4", Confidence: 0.9, Type: "file"},
{Pattern: "swagger-ui@4", Confidence: 0.9, Type: "file"},
{Pattern: "swagger-ui/4.", Confidence: 0.9, Type: "file"},
},
SpecificVersion: map[string]SpecificVersionSig{
"4.0.0-4.1.3": {
Patterns: []Pattern{
{Pattern: `version:[\"\']4\.[0-1]\.`, Confidence: 0.95, Type: "js"},
},
Vulnerabilities: []string{"Medium: Server-side Request Forgery (SSRF)"},
},
"4.2.0-4.15.5": {
Patterns: []Pattern{
{Pattern: `version:[\"\']4\.[2-9]\.`, Confidence: 0.95, Type: "js"},
{Pattern: `version:[\"\']4\.1[0-5]\.`, Confidence: 0.95, Type: "js"},
},
Vulnerabilities: []string{},
},
},
},
"5.x": {
BasePatterns: []Pattern{
{Pattern: `swagger-ui-v5`, Confidence: 0.9, Type: "js"},
{Pattern: `swagger-ui@5`, Confidence: 0.9, Type: "js"},
{Pattern: `SwaggerUINext`, Confidence: 0.8, Type: "js"},
},
DomPatterns: []Pattern{
{Pattern: ".swagger-ui-v5", Confidence: 0.8, Type: "html"},
{Pattern: "[data-swagger-version='5']", Confidence: 0.9, Type: "html"},
},
FilePatterns: []Pattern{
{Pattern: "swagger-ui.v5", Confidence: 0.9, Type: "file"},
{Pattern: "swagger-ui@5", Confidence: 0.9, Type: "file"},
{Pattern: "swagger-ui/5.", Confidence: 0.9, Type: "file"},
},
SpecificVersion: map[string]SpecificVersionSig{
"5.0.0-latest": {
Patterns: []Pattern{
{Pattern: `version:[\"\']5\.`, Confidence: 0.95, Type: "js"},
},
Vulnerabilities: []string{},
},
},
},
},
}
}
// fetchResources retrieves all necessary resources from a URL
func fetchResources(url string) (ResourceData, error) {
var resources ResourceData
resources.JS = make(map[string]string)
client := &http.Client{
Timeout: 10 * time.Second,
}
// Fetch main HTML content
req, err := http.NewRequest("GET", url, nil)
if err != nil {
return resources, err
}
// Add headers to mimic a browser
req.Header.Set("User-Agent", "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.124 Safari/537.36")
req.Header.Set("Accept", "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8")
req.Header.Set("Accept-Language", "en-US,en;q=0.5")
resp, err := client.Do(req)
if err != nil {
return resources, fmt.Errorf("error fetching URL: %v", err)
}
defer resp.Body.Close()
// Store headers for analysis
resources.Headers = resp.Header
if resp.StatusCode != http.StatusOK {
return resources, fmt.Errorf("non-200 status code: %d", resp.StatusCode)
}
bodyBytes, err := ioutil.ReadAll(resp.Body)
if err != nil {
return resources, fmt.Errorf("error reading response body: %v", err)
}
resources.HTML = string(bodyBytes)
// Parse HTML to find JS file references
doc, err := goquery.NewDocumentFromReader(strings.NewReader(resources.HTML))
if err != nil {
return resources, fmt.Errorf("error parsing HTML: %v", err)
}
baseURL := getBaseURL(url)
// Find and fetch all script files
doc.Find("script[src]").Each(func(_ int, s *goquery.Selection) {
if src, exists := s.Attr("src"); exists {
jsURL := resolveURL(baseURL, src)
// Skip external CDNs and third-party scripts that aren't likely Swagger-related
if !strings.Contains(jsURL, "googleapis.com") &&
!strings.Contains(jsURL, "jquery") &&
!strings.Contains(jsURL, "analytics") {
jsContent, err := fetchContent(jsURL, client)
if err == nil {
resources.JS[jsURL] = jsContent
}
}
}
})
// Check for inline scripts that might be swagger-related
doc.Find("script:not([src])").Each(func(_ int, s *goquery.Selection) {
scriptContent := s.Text()
if strings.Contains(scriptContent, "swagger") ||
strings.Contains(scriptContent, "Swagger") ||
strings.Contains(scriptContent, "SwaggerUI") {
resources.JS["inline-script-"+fmt.Sprint(len(resources.JS))] = scriptContent
}
})
return resources, nil
}
func getBaseURL(url string) string {
parts := strings.Split(url, "/")
if len(parts) >= 3 {
return strings.Join(parts[:3], "/")
}
return url
}
// Helper function to resolve relative URLs
func resolveURL(baseURL, relPath string) string {
if strings.HasPrefix(relPath, "http") {
return relPath
}
if strings.HasPrefix(relPath, "//") {
if strings.HasPrefix(baseURL, "https:") {
return "https:" + relPath
}
return "http:" + relPath
}
if strings.HasPrefix(relPath, "/") {
return getBaseURL(baseURL) + relPath
}
// Handle relative path
baseDir := baseURL
if !strings.HasSuffix(baseURL, "/") {
lastSlash := strings.LastIndex(baseURL, "/")
if lastSlash > 0 {
baseDir = baseURL[:lastSlash+1]
} else {
baseDir = baseURL + "/"
}
}
return baseDir + relPath
}
// fetchContent retrieves content from a URL
func fetchContent(url string, client *http.Client) (string, error) {
req, err := http.NewRequest("GET", url, nil)
if err != nil {
return "", err
}
// Add headers to mimic a browser
req.Header.Set("User-Agent", "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.124 Safari/537.36")
req.Header.Set("Accept", "*/*")
req.Header.Set("Accept-Language", "en-US,en;q=0.5")
req.Header.Set("Referer", getBaseURL(url))
resp, err := client.Do(req)
if err != nil {
return "", err
}
defer resp.Body.Close()
if resp.StatusCode != http.StatusOK {
return "", fmt.Errorf("non-200 status code: %d", resp.StatusCode)
}
bodyBytes, err := ioutil.ReadAll(resp.Body)
if err != nil {
return "", err
}
return string(bodyBytes), nil
}
// determineVulnerabilities updates the result with accurate vulnerability information based on version
func determineVulnerabilities(result *DetectionResult) {
// Clear existing vulnerabilities to avoid duplicates
result.Vulnerabilities = []string{}
// For 1.x versions
if strings.HasPrefix(result.MajorVersion, "1.") || result.MajorVersion == "1.x" {
result.Vulnerabilities = append(result.Vulnerabilities, "Medium: XSS in parameter rendering", "Medium: Information disclosure")
return
}
// For 2.x versions
if strings.HasPrefix(result.MajorVersion, "2.") || result.MajorVersion == "2.x" {
if result.SpecificVersion != "" {
version := strings.TrimPrefix(result.SpecificVersion, "2.")
if version >= "0.3" && version < "0.24" {
result.Vulnerabilities = append(result.Vulnerabilities, "Medium: Cross-site Scripting (XSS) CVE-2016-5204")
}
if version < "1.0" {
result.Vulnerabilities = append(result.Vulnerabilities, "Critical: Cross-site Scripting (XSS)")
}
if version < "2.1" {
result.Vulnerabilities = append(result.Vulnerabilities, "High: Cross-site Scripting (XSS)")
}
if version < "2.3" {
result.Vulnerabilities = append(result.Vulnerabilities, "Medium: Cross-site Scripting (XSS)")
}
} else {
// If we only know it's 2.x but don't have specific version
result.Vulnerabilities = append(result.Vulnerabilities,
"Potentially vulnerable to XSS (Critical/High/Medium severity depending on specific version)")
}
return
}
// For 3.x versions
if strings.HasPrefix(result.MajorVersion, "3.") || result.MajorVersion == "3.x" {
if result.SpecificVersion != "" {
version := strings.TrimPrefix(result.SpecificVersion, "3.")
parts := strings.Split(version, ".")
if len(parts) > 0 {
minorStr := parts[0]
minorNum, err := strconv.Atoi(minorStr)
if err == nil {
if minorNum < 1 {
if version < "0.13" {
result.Vulnerabilities = append(result.Vulnerabilities, "Medium: Cross-site Scripting (XSS)")
}
}
if minorNum < 5 {
if version < "4.2" {
result.Vulnerabilities = append(result.Vulnerabilities, "Medium: Cross-site Scripting (XSS)")
}
}
if minorNum < 18 {
result.Vulnerabilities = append(result.Vulnerabilities, "Medium: Reverse Tabnabbing")
}
if minorNum < 21 {
if version < "20.9" {
result.Vulnerabilities = append(result.Vulnerabilities, "Medium: Cross-site Scripting (XSS)")
}
}
if minorNum < 24 {
if version < "23.11" {
result.Vulnerabilities = append(result.Vulnerabilities, "Medium: Relative Path Overwrite (RPO)")
}
}
if minorNum < 27 {
if version < "26.1" {
result.Vulnerabilities = append(result.Vulnerabilities, "Medium: Insecure Defaults")
}
}
}
}
} else {
// If we only know it's 3.x
result.Vulnerabilities = append(result.Vulnerabilities,
"Potentially vulnerable to XSS, Reverse Tabnabbing, RPO, and Insecure Defaults (Medium severity)")
}
return
}
// For 4.x versions
if strings.HasPrefix(result.MajorVersion, "4.") || result.MajorVersion == "4.x" {
if result.SpecificVersion != "" {
version := strings.TrimPrefix(result.SpecificVersion, "4.")
if version < "1.3" {
result.Vulnerabilities = append(result.Vulnerabilities, "Medium: Server-side Request Forgery (SSRF)")
}
} else {
// If we only know it's 4.x
result.Vulnerabilities = append(result.Vulnerabilities,
"Potentially vulnerable to SSRF if version < 4.1.3 (Medium severity)")
}
return
}
// For 5.x versions - currently no known vulnerabilities
if strings.HasPrefix(result.MajorVersion, "5.") || result.MajorVersion == "5.x" {
result.Vulnerabilities = append(result.Vulnerabilities, "No known vulnerabilities for Swagger UI 5.x at this time")
return
}
// If no vulnerabilities were found but we have version info
if len(result.Vulnerabilities) == 0 && result.MajorVersion != "" {
result.Vulnerabilities = append(result.Vulnerabilities, "No known vulnerabilities for this specific version")
}
}
// detectSwaggerVersionComprehensive combines multiple detection methods
func detectSwaggerVersionComprehensive(url string) DetectionResult {
result := DetectionResult{
URL: url,
Confidence: 0.0,
}
// Ensure URL has proper scheme
if !strings.HasPrefix(url, "http") {
url = "https://" + url
}
// Fetch resources
resources, err := fetchResources(url)
if err != nil {
result.Error = fmt.Sprintf("Error fetching resources: %v", err)
return result
}
// Check if content looks like Swagger UI
swaggerIndicators := []string{"swagger", "api-docs", "SwaggerUI", "swagger-ui", "openapi"}
containsSwagger := false
for _, indicator := range swaggerIndicators {
if strings.Contains(strings.ToLower(resources.HTML), strings.ToLower(indicator)) {
containsSwagger = true
break
}
}
if !containsSwagger {
result.Error = "Page does not appear to contain Swagger UI"
return result
}
// 1. Try HTTP headers (most reliable when available)
headerResult := detectFromHeaders(resources.Headers)
if headerResult.Confidence > 0 {
headerResult.URL = url
headerResult.DetectionMethod = "HTTP Headers"
return headerResult
}
// 2. Try JavaScript execution via headless browser (high reliability)
jsResult := detectFromJavaScriptExecution(url)
if jsResult.Error == "" && jsResult.Confidence >= 0.9 {
jsResult.URL = url
jsResult.DetectionMethod = "JavaScript Execution"
return jsResult
}
// 3. Try static pattern detection (good reliability)
staticResult := detectFromStaticPatterns(resources)
if staticResult.Confidence > 0 {
staticResult.URL = url
staticResult.DetectionMethod = "Static Pattern Analysis"
// If JS execution gave some results but with lower confidence, combine them
if jsResult.MajorVersion != "" && jsResult.SpecificVersion != "" && staticResult.SpecificVersion == "" {
staticResult.SpecificVersion = jsResult.SpecificVersion
}
return staticResult
}
// 4. Try DOM analysis (moderate reliability)
domResult := detectFromDOMStructure(resources.HTML)
if domResult.Confidence > 0 {
domResult.URL = url
domResult.DetectionMethod = "DOM Structure Analysis"
return domResult
}
// 5. Try asset filename analysis (less reliable)
assetResult := detectFromAssetFilenames(resources.HTML)
if assetResult.Confidence > 0 {
assetResult.URL = url
assetResult.DetectionMethod = "Asset Filename Analysis"
return assetResult
}
// If all else failed but we know it's Swagger UI, provide a generic result
if containsSwagger {
result.MajorVersion = "Unknown"
result.Confidence = 0.5
result.DetectionMethod = "Basic Signature Detection"
result.Vulnerabilities = []string{
"Unknown version - manual inspection recommended",
"Check for outdated dependencies and improper configurations",
}
}
return result
}
// Detect version from HTTP response headers
func detectFromHeaders(headers http.Header) DetectionResult {
result := DetectionResult{Confidence: 0.0}
// Check common version headers
versionHeaders := []string{
"X-Swagger-UI-Version",
"X-UI-Version",
"X-Swagger-Version",
"X-API-Version",
"Swagger-Version",
}
for _, header := range versionHeaders {
if version := headers.Get(header); version != "" {
// Parse version string
if strings.HasPrefix(version, "1.") {
result.MajorVersion = "1.x"
result.SpecificVersion = version
result.Confidence = 1.0
} else if strings.HasPrefix(version, "2.") {
result.MajorVersion = "2.x"
result.SpecificVersion = version
result.Confidence = 1.0
} else if strings.HasPrefix(version, "3.") {
result.MajorVersion = "3.x"
result.SpecificVersion = version
result.Confidence = 1.0
} else if strings.HasPrefix(version, "4.") {
result.MajorVersion = "4.x"
result.SpecificVersion = version
result.Confidence = 1.0
} else if strings.HasPrefix(version, "5.") {
result.MajorVersion = "5.x"
result.SpecificVersion = version
result.Confidence = 1.0
}
if result.Confidence > 0 {
// Determine vulnerabilities based on detected version
determineVulnerabilities(&result)
return result
}
}
}
return result
}
// detectFromJavaScriptExecution uses a headless browser to detect Swagger UI version
func detectFromJavaScriptExecution(url string) DetectionResult {
result := DetectionResult{
Confidence: 0.0,
}
// Create context with timeout
ctx, cancel := context.WithTimeout(context.Background(), 15*time.Second)
defer cancel()
// Create headless browser context
browserCtx, cancel := chromedp.NewContext(ctx)
defer cancel()
// Define JavaScript to detect Swagger UI version
versionDetectionScript := `
(function () {
// Helper function to determine major version from a version string
function getMajorVersion(versionString) {
if (typeof versionString !== "string") {
return "unknown";
}
if (versionString.startsWith("5")) return "5.x";
if (versionString.startsWith("4")) return "4.x";
if (versionString.startsWith("3")) return "3.x";
// Add check for 2.x if version string might explicitly contain it
if (versionString.startsWith("2")) return "2.x";
return "unknown";
}
try {
// Method 1: Try window.versions object (preferred, often contains explicit version)
// Check safely for nested properties and ensure version is a string
if (
window.versions &&
window.versions.swaggerUi &&
typeof window.versions.swaggerUi.version === "string"
) {
const v = window.versions.swaggerUi.version;
const mj = getMajorVersion(v);
// Only return if major version is determined, otherwise fallback might be better
if (mj !== "unknown") {
return JSON.stringify({
method: "versions-object",
version: v,
major: mj,
});
}
}
// Method 2: Try SwaggerUIBundle.version (Common in 3.x, 4.x, 5.x standard bundles)
if (
window.SwaggerUIBundle &&
typeof window.SwaggerUIBundle.version === "string"
) {
const v = window.SwaggerUIBundle.version;
const mj = getMajorVersion(v);
if (mj !== "unknown") {
return JSON.stringify({
method: "swagger-ui-bundle",
version: v,
major: mj,
});
}
}
// Method 3: Try ui.getConfigs() (Available in 3.x+, but might not be initialized)
// 'ui' is the common variable name for the Swagger UI instance
if (window.ui && typeof window.ui.getConfigs === "function") {
try {
const config = window.ui.getConfigs();
// Check if config and its version property exist and version is a string
if (config && typeof config.version === "string") {
const v = config.version;
const mj = getMajorVersion(v);
if (mj !== "unknown") {
return JSON.stringify({
method: "ui-configs",
version: v,
major: mj,
});
}
}
} catch (configError) {
// Some versions throw errors if getConfigs is called too early or if 'ui' isn't fully ready.
console.warn(
"Could not get version from ui.getConfigs():",
configError.message,
);
}
}
// Method 4: Look for global SwaggerUI object and infer based on properties
// The 'SwaggerUI' constructor function exists in v3, v4, v5. Its *properties* differ.
// 'SwaggerUI' also existed in v2, but often without SwaggerUIBundle.
if (window.SwaggerUI) {
// Check for 5.x-specific static properties (plugins/systems were prominent additions)
if (window.SwaggerUI.plugins || window.SwaggerUI.systems) {
// High confidence this is 5.x or related structure
return JSON.stringify({
method: "swagger-ui-5x-apis",
version: "5.x inferred", // Cannot get exact version here easily
major: "5.x",
});
}
// If SwaggerUI exists but SwaggerUIBundle does NOT, it's likely 2.x
// (Bundle was introduced later)
else if (!window.SwaggerUIBundle) {
return JSON.stringify({
method: "swagger-ui-global-no-bundle",
version: "2.x inferred",
major: "2.x",
});
}
// If SwaggerUI exists and SwaggerUIBundle exists, Method 2 should have caught it.
// If it falls through here, it might be an unusual setup (e.g., v3/v4 without bundle version property)
// We can make an educated guess based on the presence of SwaggerUI + Bundle
else if (window.SwaggerUIBundle) {
// Cannot reliably distinguish 3.x/4.x here without version property
// Let DOM methods try to refine this
console.warn(
"Found SwaggerUI and SwaggerUIBundle, but Bundle had no version property.",
);
}
}
// Method 5: Check for SwaggerUINext (Potentially a 5.x specific global or future version indicator)
if (window.SwaggerUINext) {
// Try to get a version if available, otherwise default to 5.x
const v =
typeof window.SwaggerUINext.version === "string"
? window.SwaggerUINext.version
: "5.x inferred";
return JSON.stringify({
method: "swagger-ui-next",
version: v,
major: "5.x", // Assuming SwaggerUINext implies 5.x
});
}
// --- DOM Based Checks (Less reliable, used as fallback) ---
// Method 6: Look for 5.x specific data attributes in the DOM
// This relies on developers explicitly adding this attribute.
try {
const dataAttrs = document.querySelectorAll("[data-swagger-version]");
for (let i = 0; i < dataAttrs.length; i++) {
const versionAttr = dataAttrs[i].getAttribute("data-swagger-version");
// Check if attribute value looks like a v5 version
if (
versionAttr &&
typeof versionAttr === "string" &&
versionAttr.trim().startsWith("5")
) {
return JSON.stringify({
method: "dom-data-attribute",
version: versionAttr,
major: "5.x",
});
}
}
} catch (domError) {
console.warn("DOM query error (data-attr):", domError.message);
}
// Method 7: Check for indicative CSS classes (potentially version-specific or custom)
try {
const swaggerVersionClasses = [
".swagger-ui-v5", // Example specific class
".swagger-ui--v5", // Another pattern
'.swagger-ui .swagger-ui-wrap[data-v="5"]', // Example attribute selector
'[class*="swagger-ui-v5"]', // Wildcard check
'[class*="swagger-ui-5"]', // Simpler wildcard
];
for (const selector of swaggerVersionClasses) {
if (document.querySelector(selector)) {
return JSON.stringify({
method: "dom-class-detection",
version: "5.x inferred", // Class presence doesn't give specific version
major: "5.x",
});
}
}
// Wil add similar checks for v4/v3 in future if reliable classes are known
// Example for v4:
// if (document.querySelector('.swagger-ui--v4')) { return ... "4.x" ... }
// Example for v3:
// if (document.querySelector('.swagger-ui--v3')) { return ... "3.x" ... }
} catch (domError) {
console.warn("DOM query error (class):", domError.message);
}
// Method 8: Check DOM element structure typical for different major versions
// This is heuristic and can be broken by customization.
try {
const swaggerUiBaseElement = document.querySelector(".swagger-ui"); // Common base for v3+
const swaggerV2Container = document.querySelector(
"#swagger-ui-container",
); // Common ID for v2
const swaggerV2Section = document.querySelector(".swagger-section"); // Another v2 indicator
// V5 Heuristics: Often includes specific components like server dropdowns, new opblock structures
const hasServersDropdown = !!document.querySelector(
".servers > .servers-title, .servers > label > select",
);
const hasNewOpblockPath = !!document.querySelector(
".opblock .opblock-summary-path",
);
const hasAuthorizeBtn = !!document.querySelector(
".auth-wrapper .authorize",
);
if (
swaggerUiBaseElement &&
hasServersDropdown &&
hasNewOpblockPath &&
hasAuthorizeBtn
) {
// High likelihood of v5 due to combination of modern components within .swagger-ui
return JSON.stringify({
method: "dom-structure-v5",
version: "5.x inferred",
major: "5.x",
});
}
// V3/V4 Heuristics: Has .swagger-ui base, lacks v2 containers.
// Distinguishing v3/v4 via DOM alone is tricky. V4 introduced subtle changes.
else if (swaggerUiBaseElement && !swaggerV2Container) {
// Look for elements more common in v4+ (e.g., updated model rendering)
const hasV4ModelElements = !!document.querySelector(
".model-box, .model-title .model-title__text, .models .model-container",
);
if (hasV4ModelElements) {
return JSON.stringify({
method: "dom-structure-v4",
version: "4.x inferred",
major: "4.x",
});
} else {
// If it has .swagger-ui but lacks clear v4/v5 indicators, assume v3
return JSON.stringify({
method: "dom-structure-v3",
version: "3.x inferred",
major: "3.x",
});
}
}
// V2 Heuristics: Uses older container IDs/classes
else if (swaggerV2Container || swaggerV2Section) {
return JSON.stringify({
method: "dom-structure-v2",
version: "2.x inferred",
major: "2.x",
});
}
} catch (domError) {
console.warn("DOM query error (structure):", domError.message);
}
// Method 9: Check script source URLs for version patterns (Last resort)
// Relies on common CDN or file naming patterns.
try {
const scripts = document.querySelectorAll("script[src]");
for (let i = 0; i < scripts.length; i++) {
const src = scripts[i].getAttribute("src");
if (src && typeof src === "string") {
// Check from newest to oldest
if (
src.includes("swagger-ui@5") ||
src.includes("swagger-ui/5.") ||
src.includes("swagger-ui-bundle/5.")
) {
return JSON.stringify({
method: "script-src-detection",
version: "5.x inferred",
major: "5.x",
});
}
if (
src.includes("swagger-ui@4") ||
src.includes("swagger-ui/4.") ||
src.includes("swagger-ui-bundle/4.")
) {
return JSON.stringify({
method: "script-src-detection",
version: "4.x inferred",
major: "4.x",
});
}
if (
src.includes("swagger-ui@3") ||
src.includes("swagger-ui/3.") ||
src.includes("swagger-ui-bundle/3.")
) {
return JSON.stringify({
method: "script-src-detection",
version: "3.x inferred",
major: "3.x",
});
}
// V2 often didn't use 'bundle' and might just be 'swagger-ui.js' or similar, less specific pattern.
// Checking for '@2' or '/2.' might catch some cases.
if (src.includes("swagger-ui@2") || src.includes("swagger-ui/2.")) {
return JSON.stringify({
method: "script-src-detection",
version: "2.x inferred",
major: "2.x",
});
}
}
}
} catch (domError) {
console.warn("DOM query error (script src):", domError.message);
}
// If none of the methods above worked, return detection failure
return JSON.stringify({
method: "detection-failed",
error:
"No definitive Swagger UI markers found via objects or DOM inspection.",
major: "unknown", // Explicitly state unknown
});
} catch (e) {
// Catch any unexpected errors during the detection process
console.error("Swagger UI detection script failed:", e);
return JSON.stringify({
method: "detection-error",
error: e.toString(),