ignore sensitive files in collection (#124)

README.md

@@ -22,6 +22,9 @@ The `--hide` flag can be used multiple times to hide sensitive data, it supports
 
 `# support-collector --hide "Secret:.*" --hide "Password:.*"`
 
+In addition, files and folders that follow a specific pattern are not collected. This affects all files that correspond to the following filters:  
+`.*`, `*~`, `*.key`, `*.csr`, `*.crt`, and `*.pem`
+
 By default, we collect all we can find. You can control this by only enabling certain modules, or disabling some.
 
 If you want to see what is collected, add `--verbose`

internal/collection/collection.go

@@ -183,13 +183,7 @@ func (c *Collection) AddFilesIfFound(prefix string, sources ...string) {
 			return
 		}
 
-		c.Log.Debug("Collecting files from ", source)
-
-		for _, file := range files {
-			foundFiles++
-
-			_ = c.AddFileToOutput(file)
-		}
+		c.AddFiles(prefix, source)
 	}
 
 	if foundFiles == 0 {

internal/collection/file.go

@@ -20,7 +20,7 @@ type File struct {
 	io.Writer
 }
 
-var reIgnoreFiles = regexp.MustCompile(`(^\.|~$)`)
+var reIgnoreFiles = regexp.MustCompile(`(^\.|~$|\.key$|\.csr$|\.crt$|\.pem$)`)
 
 func NewFile(name string) *File {
 	return &File{
@@ -56,7 +56,9 @@ func LoadFiles(prefix, source string) (files []*File, err error) {
 		return
 	}
 
-	files = append(files, file)
+	if !reIgnoreFiles.MatchString(file.Name) {
+		files = append(files, file)
+	}
 
 	return
 }