|
| 1 | +package daemon |
| 2 | + |
| 3 | +import ( |
| 4 | + "os/exec" |
| 5 | + "runtime" |
| 6 | + "strconv" |
| 7 | + "strings" |
| 8 | +) |
| 9 | + |
| 10 | +// Known terminal emulator process names |
| 11 | +var knownTerminals = map[string]bool{ |
| 12 | + // macOS |
| 13 | + "Terminal": true, |
| 14 | + "iTerm2": true, |
| 15 | + "Alacritty": true, |
| 16 | + "alacritty": true, |
| 17 | + "kitty": true, |
| 18 | + "WezTerm": true, |
| 19 | + "wezterm": true, |
| 20 | + "wezterm-gui": true, |
| 21 | + "Hyper": true, |
| 22 | + "Tabby": true, |
| 23 | + "Warp": true, |
| 24 | + "Ghostty": true, |
| 25 | + "ghostty": true, |
| 26 | + // Linux |
| 27 | + "gnome-terminal": true, |
| 28 | + "gnome-terminal-": true, // gnome-terminal-server |
| 29 | + "konsole": true, |
| 30 | + "xfce4-terminal": true, |
| 31 | + "xterm": true, |
| 32 | + "urxvt": true, |
| 33 | + "rxvt": true, |
| 34 | + "terminator": true, |
| 35 | + "tilix": true, |
| 36 | + "st": true, |
| 37 | + "foot": true, |
| 38 | + "footclient": true, |
| 39 | + // IDE terminals |
| 40 | + "code": true, |
| 41 | + "Code": true, |
| 42 | + "cursor": true, |
| 43 | + "Cursor": true, |
| 44 | +} |
| 45 | + |
| 46 | +// Known terminal multiplexer process names |
| 47 | +var knownMultiplexers = map[string]bool{ |
| 48 | + "tmux": true, |
| 49 | + "screen": true, |
| 50 | + "zellij": true, |
| 51 | +} |
| 52 | + |
| 53 | +// Known remote/container process names |
| 54 | +var knownRemote = map[string]bool{ |
| 55 | + "sshd": true, |
| 56 | + "docker": true, |
| 57 | + "containerd": true, |
| 58 | +} |
| 59 | + |
| 60 | +// ResolveTerminal walks up the process tree starting from ppid |
| 61 | +// to find the terminal emulator and multiplexer separately. |
| 62 | +// Returns (terminal, multiplexer) as separate values. |
| 63 | +func ResolveTerminal(ppid int) (terminal string, multiplexer string) { |
| 64 | + if ppid <= 0 { |
| 65 | + return "", "" |
| 66 | + } |
| 67 | + |
| 68 | + currentPID := ppid |
| 69 | + visited := make(map[int]bool) |
| 70 | + |
| 71 | + // Walk up the process tree (max 10 levels to prevent infinite loops) |
| 72 | + for i := 0; i < 10; i++ { |
| 73 | + if currentPID <= 1 || visited[currentPID] { |
| 74 | + break |
| 75 | + } |
| 76 | + visited[currentPID] = true |
| 77 | + |
| 78 | + processName := getProcessName(currentPID) |
| 79 | + if processName == "" { |
| 80 | + break |
| 81 | + } |
| 82 | + |
| 83 | + // Check for multiplexers first (they're closer to the shell) |
| 84 | + if multiplexer == "" && knownMultiplexers[processName] { |
| 85 | + multiplexer = processName |
| 86 | + } |
| 87 | + |
| 88 | + // Check for terminals |
| 89 | + if terminal == "" && knownTerminals[processName] { |
| 90 | + terminal = processName |
| 91 | + } |
| 92 | + |
| 93 | + // Check for remote connections |
| 94 | + if terminal == "" && knownRemote[processName] { |
| 95 | + terminal = processName |
| 96 | + } |
| 97 | + |
| 98 | + // If we found a terminal, we can stop |
| 99 | + if terminal != "" { |
| 100 | + break |
| 101 | + } |
| 102 | + |
| 103 | + // Get parent PID and continue |
| 104 | + parentPID := getParentPID(currentPID) |
| 105 | + if parentPID <= 1 || parentPID == currentPID { |
| 106 | + break |
| 107 | + } |
| 108 | + currentPID = parentPID |
| 109 | + } |
| 110 | + |
| 111 | + // If neither found, return "unknown" for terminal |
| 112 | + if terminal == "" && multiplexer == "" { |
| 113 | + return "unknown", "" |
| 114 | + } |
| 115 | + |
| 116 | + return terminal, multiplexer |
| 117 | +} |
| 118 | + |
| 119 | +// getProcessName returns the process name for the given PID |
| 120 | +func getProcessName(pid int) string { |
| 121 | + switch runtime.GOOS { |
| 122 | + case "darwin": |
| 123 | + // macOS: ps -p <pid> -o comm= |
| 124 | + out, err := exec.Command("ps", "-p", strconv.Itoa(pid), "-o", "comm=").Output() |
| 125 | + if err != nil { |
| 126 | + return "" |
| 127 | + } |
| 128 | + name := strings.TrimSpace(string(out)) |
| 129 | + // Remove path prefix if present |
| 130 | + if idx := strings.LastIndex(name, "/"); idx >= 0 { |
| 131 | + name = name[idx+1:] |
| 132 | + } |
| 133 | + return name |
| 134 | + |
| 135 | + case "linux": |
| 136 | + // Linux: /proc/<pid>/comm |
| 137 | + out, err := exec.Command("cat", "/proc/"+strconv.Itoa(pid)+"/comm").Output() |
| 138 | + if err != nil { |
| 139 | + return "" |
| 140 | + } |
| 141 | + return strings.TrimSpace(string(out)) |
| 142 | + } |
| 143 | + |
| 144 | + return "" |
| 145 | +} |
| 146 | + |
| 147 | +// getParentPID returns the parent process ID for the given PID |
| 148 | +func getParentPID(pid int) int { |
| 149 | + switch runtime.GOOS { |
| 150 | + case "darwin": |
| 151 | + out, err := exec.Command("ps", "-p", strconv.Itoa(pid), "-o", "ppid=").Output() |
| 152 | + if err != nil { |
| 153 | + return 0 |
| 154 | + } |
| 155 | + ppid, err := strconv.Atoi(strings.TrimSpace(string(out))) |
| 156 | + if err != nil { |
| 157 | + return 0 |
| 158 | + } |
| 159 | + return ppid |
| 160 | + |
| 161 | + case "linux": |
| 162 | + out, err := exec.Command("cat", "/proc/"+strconv.Itoa(pid)+"/stat").Output() |
| 163 | + if err != nil { |
| 164 | + return 0 |
| 165 | + } |
| 166 | + // /proc/pid/stat format: pid (comm) state ppid ... |
| 167 | + // Find the closing ) and get the 4th field after it |
| 168 | + data := string(out) |
| 169 | + idx := strings.LastIndex(data, ")") |
| 170 | + if idx < 0 { |
| 171 | + return 0 |
| 172 | + } |
| 173 | + fields := strings.Fields(data[idx+1:]) |
| 174 | + if len(fields) < 2 { |
| 175 | + return 0 |
| 176 | + } |
| 177 | + ppid, _ := strconv.Atoi(fields[1]) |
| 178 | + return ppid |
| 179 | + } |
| 180 | + |
| 181 | + return 0 |
| 182 | +} |
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