| 1 | package server |
| 2 | |
| 3 | import ( |
| 4 | "crypto/subtle" |
| 5 | "fmt" |
| 6 | "net/http" |
| 7 | "strings" |
| 8 | |
| 9 | "go.bigb.es/curator/internal/config" |
| 10 | ) |
| 11 | |
| 12 | // ParseAdminToken resolves an admin token value. |
| 13 | // If value starts with "@", the rest is treated as a file path and the token |
| 14 | // is read from the first non-empty, non-comment line. |
| 15 | func ParseAdminToken(value string) (string, error) { |
| 16 | resolved, err := config.ResolveValue(value) |
| 17 | if err != nil { |
| 18 | return "", err |
| 19 | } |
| 20 | if !strings.HasPrefix(value, "@") { |
| 21 | return value, nil |
| 22 | } |
| 23 | |
| 24 | for _, line := range strings.Split(resolved, "\n") { |
| 25 | token := strings.TrimSpace(line) |
| 26 | if token != "" && !strings.HasPrefix(token, "#") { |
| 27 | return token, nil |
| 28 | } |
| 29 | } |
| 30 | return "", fmt.Errorf("no token found in file") |
| 31 | } |
| 32 | |
| 33 | // ParseAuthTokens parses auth tokens from a value. |
| 34 | // If value starts with "@", the rest is treated as a file path |
| 35 | // (one token per line, # comments supported). |
| 36 | // Otherwise the value is split on commas. |
| 37 | func ParseAuthTokens(value string) (map[string]struct{}, error) { |
| 38 | resolved, err := config.ResolveValue(value) |
| 39 | if err != nil { |
| 40 | return nil, err |
| 41 | } |
| 42 | |
| 43 | if strings.HasPrefix(value, "@") { |
| 44 | return parseTokenLines(resolved), nil |
| 45 | } |
| 46 | |
| 47 | // Comma-separated tokens. |
| 48 | tokens := make(map[string]struct{}) |
| 49 | for _, raw := range strings.Split(resolved, ",") { |
| 50 | token := strings.TrimSpace(raw) |
| 51 | if token != "" { |
| 52 | tokens[token] = struct{}{} |
| 53 | } |
| 54 | } |
| 55 | return tokens, nil |
| 56 | } |
| 57 | |
| 58 | func parseTokenLines(data string) map[string]struct{} { |
| 59 | tokens := make(map[string]struct{}) |
| 60 | for _, line := range strings.Split(data, "\n") { |
| 61 | token := strings.TrimSpace(line) |
| 62 | if token != "" && !strings.HasPrefix(token, "#") { |
| 63 | tokens[token] = struct{}{} |
| 64 | } |
| 65 | } |
| 66 | return tokens |
| 67 | } |
| 68 | |
| 69 | func (s *Server) isAuthenticated(r *http.Request) bool { |
| 70 | // Check Authorization: Bearer header. |
| 71 | if auth := r.Header.Get("Authorization"); auth != "" { |
| 72 | if token, ok := strings.CutPrefix(auth, "Bearer "); ok { |
| 73 | if _, valid := s.AuthTokens[token]; valid { |
| 74 | return true |
| 75 | } |
| 76 | } |
| 77 | } |
| 78 | |
| 79 | // Check Basic auth. |
| 80 | if _, password, ok := r.BasicAuth(); ok { |
| 81 | if _, valid := s.AuthTokens[password]; valid { |
| 82 | return true |
| 83 | } |
| 84 | } |
| 85 | |
| 86 | // Check session cookie (set via browser login). |
| 87 | if cookie, err := r.Cookie("curator_auth"); err == nil { |
| 88 | if _, valid := s.AuthTokens[cookie.Value]; valid { |
| 89 | return true |
| 90 | } |
| 91 | if s.Cfg.AdminToken != "" && subtle.ConstantTimeCompare([]byte(cookie.Value), []byte(s.Cfg.AdminToken)) == 1 { |
| 92 | return true |
| 93 | } |
| 94 | } |
| 95 | |
| 96 | // Check OIDC session cookie. |
| 97 | if s.OIDCProvider != nil { |
| 98 | if cookie, err := r.Cookie("curator_session"); err == nil { |
| 99 | if email := s.OIDCProvider.ValidateSession(cookie.Value); email != "" { |
| 100 | return true |
| 101 | } |
| 102 | } |
| 103 | } |
| 104 | |
| 105 | return false |
| 106 | } |
| 107 | |
| 108 | // CanAccessModule returns true if the request is allowed to access the module. |
| 109 | func (s *Server) CanAccessModule(modName string, r *http.Request) bool { |
| 110 | mod, ok := s.Resolver.ResolveModule(modName) |
| 111 | if !ok { |
| 112 | return false |
| 113 | } |
| 114 | |
| 115 | if !mod.Private { |
| 116 | return true |
| 117 | } |
| 118 | |
| 119 | return s.isAuthenticated(r) |
| 120 | } |
| 121 | |