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tangled.org/core
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appview: repo/new: additional checks for repo names
avoids path traversal attempts.
+35
-10
+35
-10
appview/state/state.go
+35
-10
appview/state/state.go
···
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func (s *State) RemoveMember(w http.ResponseWriter, r *http.Request) {
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}
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+
func validateRepoName(name string) error {
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+
// check for path traversal attempts
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+
if name == "." || name == ".." ||
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+
strings.Contains(name, "/") || strings.Contains(name, "\\") {
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+
return fmt.Errorf("Repository name contains invalid path characters")
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+
}
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+
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+
// check for sequences that could be used for traversal when normalized
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+
if strings.Contains(name, "./") || strings.Contains(name, "../") ||
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strings.HasPrefix(name, ".") || strings.HasSuffix(name, ".") {
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return fmt.Errorf("Repository name contains invalid path sequence")
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+
}
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+
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// then continue with character validation
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+
for _, char := range name {
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if !((char >= 'a' && char <= 'z') ||
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(char >= 'A' && char <= 'Z') ||
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(char >= '0' && char <= '9') ||
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char == '-' || char == '_' || char == '.') {
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return fmt.Errorf("Repository name can only contain alphanumeric characters, periods, hyphens, and underscores")
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+
}
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}
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+
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// additional check to prevent multiple sequential dots
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+
if strings.Contains(name, "..") {
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return fmt.Errorf("Repository name cannot contain sequential dots")
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+
}
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+
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// if all checks pass
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return nil
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+
}
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+
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func (s *State) NewRepo(w http.ResponseWriter, r *http.Request) {
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ctx, span := s.t.TraceStart(r.Context(), "NewRepo")
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defer span.End()
···
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}
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span.SetAttributes(attribute.String("repo.name", repoName))
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-
// Check for valid repository name (GitHub-like rules)
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// No spaces, only alphanumeric characters, dashes, and underscores
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-
for _, char := range repoName {
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-
if !((char >= 'a' && char <= 'z') ||
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-
(char >= 'A' && char <= 'Z') ||
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-
(char >= '0' && char <= '9') ||
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-
char == '-' || char == '_' || char == '.') {
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s.pages.Notice(w, "repo", "Repository name can only contain alphanumeric characters, periods, hyphens, and underscores.")
654
-
return
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-
}
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+
if err := validateRepoName(repoName); err != nil {
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+
s.pages.Notice(w, "repo", err.Error())
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+
return
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}
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defaultBranch := r.FormValue("branch")