wardn 0.4.1

Credential isolation proxy — agents never see real API keys
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131

use std::path::Path;

use anyhow::{bail, Context, Result};

use wardn::Vault;

use super::VaultCommands;

/// Read passphrase from WARDN_PASSPHRASE env var or prompt interactively.
fn read_passphrase(prompt: &str) -> Result<String> {
    if let Ok(pass) = std::env::var("WARDN_PASSPHRASE") {
        tracing::warn!("using passphrase from WARDN_PASSPHRASE env var — not recommended for production");
        return Ok(pass);
    }
    rpassword::prompt_password(prompt).context("failed to read passphrase")
}

/// Read a secret value from WARDN_VALUE env var or prompt interactively.
fn read_value(prompt: &str) -> Result<String> {
    if let Ok(val) = std::env::var("WARDN_VALUE") {
        return Ok(val);
    }
    rpassword::prompt_password(prompt).context("failed to read value")
}

pub fn run(cmd: &VaultCommands, vault_path: &Path) -> Result<()> {
    match cmd {
        VaultCommands::Create => {
            if vault_path.exists() {
                bail!("vault already exists at {}", vault_path.display());
            }

            if let Some(parent) = vault_path.parent() {
                std::fs::create_dir_all(parent)
                    .context("failed to create vault directory")?;
            }

            let passphrase = read_passphrase("Passphrase: ")?;
            let confirm = read_passphrase("Confirm passphrase: ")?;

            if passphrase != confirm {
                bail!("passphrases do not match");
            }

            if passphrase.is_empty() {
                bail!("passphrase cannot be empty");
            }

            Vault::create(vault_path, &passphrase)?;
            println!("vault created at {}", vault_path.display());
        }

        VaultCommands::Set { key } => {
            let passphrase = read_passphrase("Passphrase: ")?;
            let mut vault = Vault::open(vault_path, &passphrase)?;

            let value = read_value(&format!("Value for {key}: "))?;
            if value.is_empty() {
                bail!("value cannot be empty");
            }

            vault.set(key, &value)?;
            println!("stored {key}");
        }

        VaultCommands::Get { key, agent } => {
            let passphrase = read_passphrase("Passphrase: ")?;
            let mut vault = Vault::open(vault_path, &passphrase)?;

            let placeholder = vault.get_placeholder(key, agent)?;
            println!("{}", placeholder.as_str());
        }

        VaultCommands::List => {
            let passphrase = read_passphrase("Passphrase: ")?;
            let vault = Vault::open(vault_path, &passphrase)?;

            let creds = vault.list();
            if creds.is_empty() {
                println!("vault is empty");
                return Ok(());
            }

            println!(
                "{:<24} {:<20} {:<20} {:<10} CREATED",
                "NAME", "AGENTS", "DOMAINS", "RATE LIMIT"
            );
            println!("{}", "-".repeat(90));

            for info in &creds {
                let agents = if info.allowed_agents.is_empty() {
                    "*".to_string()
                } else {
                    info.allowed_agents.join(", ")
                };
                let domains = if info.allowed_domains.is_empty() {
                    "*".to_string()
                } else {
                    info.allowed_domains.join(", ")
                };
                let rl = if info.has_rate_limit { "yes" } else { "no" };
                let created = &info.created_at[..10]; // date only

                println!("{:<24} {:<20} {:<20} {:<10} {}", info.name, agents, domains, rl, created);
            }
        }

        VaultCommands::Rotate { key } => {
            let passphrase = read_passphrase("Passphrase: ")?;
            let mut vault = Vault::open(vault_path, &passphrase)?;

            let new_value = read_value(&format!("New value for {key}: "))?;
            if new_value.is_empty() {
                bail!("value cannot be empty");
            }

            vault.rotate(key, &new_value)?;
            println!("rotated {key} — existing placeholders unchanged");
        }

        VaultCommands::Remove { key } => {
            let passphrase = read_passphrase("Passphrase: ")?;
            let mut vault = Vault::open(vault_path, &passphrase)?;

            vault.remove(key)?;
            println!("removed {key}");
        }
    }

    Ok(())
}