2664 lines
92 KiB
C
2664 lines
92 KiB
C
#define _GNU_SOURCE
|
|
|
|
/* NSIGNER_HEADERLESS_DECLS_BEGIN */
|
|
#include <stddef.h>
|
|
#include <stdint.h>
|
|
#include <sys/types.h>
|
|
#include <cJSON.h>
|
|
|
|
/* from secure_mem.h */
|
|
|
|
|
|
/*
|
|
* Secure memory buffer — mlock'd, zeroized on free.
|
|
* Used for mnemonic phrases, private keys, and any sensitive material.
|
|
*/
|
|
typedef struct {
|
|
void *data; /* pointer to locked allocation */
|
|
size_t size; /* usable size in bytes */
|
|
int locked; /* 1 if mlock succeeded */
|
|
} secure_buf_t;
|
|
|
|
/* Allocate a secure buffer of `size` bytes. Returns 0 on success, -1 on failure. */
|
|
int secure_buf_alloc(secure_buf_t *buf, size_t size);
|
|
|
|
/* Zeroize and free a secure buffer. Always succeeds (idempotent). */
|
|
void secure_buf_free(secure_buf_t *buf);
|
|
|
|
/* Zeroize `len` bytes at `ptr` in a way the compiler cannot optimize away. */
|
|
void secure_memzero(void *ptr, size_t len);
|
|
|
|
|
|
/* from mnemonic.h */
|
|
|
|
|
|
/* Maximum mnemonic length: 24 words * 10 chars avg + spaces + null = 256 is safe */
|
|
#define MNEMONIC_MAX_LEN 256
|
|
|
|
/*
|
|
* Mnemonic state — holds the loaded mnemonic in secure memory.
|
|
* Only one mnemonic is active at a time per process.
|
|
*/
|
|
typedef struct {
|
|
secure_buf_t buf; /* secure storage for the mnemonic string */
|
|
int loaded; /* 1 if a mnemonic is currently loaded */
|
|
int word_count; /* 12, 15, 18, 21, or 24 */
|
|
} mnemonic_state_t;
|
|
|
|
/* Initialize mnemonic state (must be called before use). */
|
|
void mnemonic_init(mnemonic_state_t *state);
|
|
|
|
/* Load a mnemonic string into secure memory. Validates word count (12/15/18/21/24).
|
|
* Returns 0 on success, -1 on invalid input, -2 on memory error. */
|
|
int mnemonic_load(mnemonic_state_t *state, const char *phrase);
|
|
|
|
/* Zeroize and unload the mnemonic. Idempotent. */
|
|
void mnemonic_unload(mnemonic_state_t *state);
|
|
|
|
/* Check if a mnemonic is currently loaded. */
|
|
int mnemonic_is_loaded(const mnemonic_state_t *state);
|
|
|
|
/* Get the mnemonic string (only valid while loaded). Returns NULL if not loaded. */
|
|
const char *mnemonic_get_phrase(const mnemonic_state_t *state);
|
|
|
|
/* Generate a new BIP-39 mnemonic phrase (12/15/18/21/24 words) into out.
|
|
* Returns 0 on success, -1 on invalid arguments or generation failure. */
|
|
int mnemonic_generate(int word_count, char *out, size_t out_len);
|
|
|
|
|
|
/* from role_table.h */
|
|
|
|
|
|
/* Maximum limits */
|
|
#define ROLE_NAME_MAX 64
|
|
#define ROLE_PATH_MAX 128
|
|
#define ROLE_PURPOSE_MAX 32
|
|
#define ROLE_CURVE_MAX 16
|
|
#define ROLE_PUBKEY_HEX_MAX 66 /* 64 hex chars + null + pad */
|
|
#define ROLE_TABLE_MAX_ENTRIES 256
|
|
|
|
/* Purpose enum for fast comparison (string form kept for config/display) */
|
|
typedef enum {
|
|
PURPOSE_NOSTR = 0,
|
|
PURPOSE_BITCOIN,
|
|
PURPOSE_SSH,
|
|
PURPOSE_AGE,
|
|
PURPOSE_FIPS,
|
|
PURPOSE_PQ_SIG, /* post-quantum signatures (ML-DSA, SLH-DSA) */
|
|
PURPOSE_PQ_KEM, /* post-quantum key encapsulation (ML-KEM) */
|
|
PURPOSE_UNKNOWN
|
|
} role_purpose_t;
|
|
|
|
/* Curve enum */
|
|
typedef enum {
|
|
CURVE_SECP256K1 = 0,
|
|
CURVE_ED25519,
|
|
CURVE_X25519,
|
|
CURVE_ML_DSA_65,
|
|
CURVE_SLH_DSA_128S,
|
|
CURVE_ML_KEM_768,
|
|
CURVE_UNKNOWN
|
|
} role_curve_t;
|
|
|
|
/* Selector type — how this role's key is addressed */
|
|
typedef enum {
|
|
SELECTOR_NOSTR_INDEX, /* uses nostr_index shorthand */
|
|
SELECTOR_ROLE_PATH /* uses explicit full path */
|
|
} role_selector_type_t;
|
|
|
|
/* A single role entry */
|
|
typedef struct {
|
|
char name[ROLE_NAME_MAX];
|
|
char purpose_str[ROLE_PURPOSE_MAX];
|
|
char curve_str[ROLE_CURVE_MAX];
|
|
role_purpose_t purpose;
|
|
role_curve_t curve;
|
|
role_selector_type_t selector_type;
|
|
int nostr_index; /* valid if selector_type == SELECTOR_NOSTR_INDEX */
|
|
char role_path[ROLE_PATH_MAX]; /* valid if selector_type == SELECTOR_ROLE_PATH */
|
|
char pubkey_hex[ROLE_PUBKEY_HEX_MAX]; /* filled after derivation, empty until then */
|
|
int derived; /* 1 if pubkey_hex has been populated */
|
|
} role_entry_t;
|
|
|
|
/* The role table */
|
|
typedef struct {
|
|
role_entry_t entries[ROLE_TABLE_MAX_ENTRIES];
|
|
int count;
|
|
} role_table_t;
|
|
|
|
/* Initialize an empty role table */
|
|
void role_table_init(role_table_t *table);
|
|
|
|
/* Add a role entry. Returns 0 on success, -1 if table full, -2 if name duplicate. */
|
|
int role_table_add(role_table_t *table, const role_entry_t *entry);
|
|
|
|
/* Find a role by name. Returns pointer to entry or NULL. */
|
|
role_entry_t *role_table_find_by_name(role_table_t *table, const char *name);
|
|
|
|
/* Find a role by nostr_index. Returns pointer or NULL. */
|
|
role_entry_t *role_table_find_by_nostr_index(role_table_t *table, int index);
|
|
|
|
/* Find a role by role_path. Returns pointer or NULL. */
|
|
role_entry_t *role_table_find_by_path(role_table_t *table, const char *path);
|
|
|
|
/* Get the default role (named "main"). Returns pointer or NULL if no "main" role. */
|
|
role_entry_t *role_table_get_default(role_table_t *table);
|
|
|
|
/* Parse purpose string to enum */
|
|
role_purpose_t role_purpose_from_str(const char *s);
|
|
|
|
/* Parse curve string to enum */
|
|
role_curve_t role_curve_from_str(const char *s);
|
|
|
|
/* Purpose enum to string */
|
|
const char *role_purpose_to_str(role_purpose_t p);
|
|
|
|
/* Curve enum to string */
|
|
const char *role_curve_to_str(role_curve_t c);
|
|
|
|
/* Register a nostr-index role if missing. Returns 0 on success, -1 on error. */
|
|
int role_table_register_nostr_index(role_table_t *table, int nostr_index);
|
|
|
|
|
|
/* from selector.h */
|
|
|
|
|
|
/* Error codes for selector resolution */
|
|
#define SELECTOR_OK 0
|
|
#define SELECTOR_ERR_AMBIGUOUS -1 /* multiple selectors specified */
|
|
#define SELECTOR_ERR_NOT_FOUND -2 /* no matching role in table */
|
|
#define SELECTOR_ERR_NO_DEFAULT -3 /* no selector given and no "main" role exists */
|
|
|
|
/* Parsed selector from a request's options object */
|
|
typedef struct {
|
|
int has_role; /* 1 if "role" field was present */
|
|
char role_name[ROLE_NAME_MAX];
|
|
|
|
int has_nostr_index; /* 1 if "nostr_index" field was present */
|
|
int nostr_index;
|
|
|
|
int has_role_path; /* 1 if "role_path" field was present */
|
|
char role_path[ROLE_PATH_MAX];
|
|
} selector_request_t;
|
|
|
|
/* Initialize a selector request (all fields zeroed/unset) */
|
|
void selector_request_init(selector_request_t *req);
|
|
|
|
/*
|
|
* Resolve a selector request against the role table.
|
|
* On success (returns SELECTOR_OK), *out points to the matched role_entry_t.
|
|
* On failure, returns one of the SELECTOR_ERR_* codes and *out is NULL.
|
|
*/
|
|
int selector_resolve(const selector_request_t *req, role_table_t *table, role_entry_t **out);
|
|
|
|
/*
|
|
* Return a human-readable error string for a selector error code.
|
|
*/
|
|
const char *selector_strerror(int err);
|
|
|
|
|
|
/* from enforcement.h */
|
|
|
|
|
|
/* Error codes */
|
|
#define ENFORCE_OK 0
|
|
#define ENFORCE_ERR_PURPOSE -1 /* purpose mismatch */
|
|
#define ENFORCE_ERR_CURVE -2 /* curve mismatch */
|
|
#define ENFORCE_ERR_UNKNOWN_VERB -3 /* verb not recognized */
|
|
#define ENFORCE_ERR_ALGORITHM -4 /* algorithm not valid for verb */
|
|
|
|
/* New algorithm-based verb defines (algorithm is a parameter, not implicit) */
|
|
#define VERB_SIGN "sign"
|
|
#define VERB_VERIFY "verify"
|
|
#define VERB_ENCAPSULATE "encapsulate"
|
|
#define VERB_DECAPSULATE "decapsulate"
|
|
#define VERB_DERIVE_SHARED "derive_shared_secret"
|
|
|
|
#define ENFORCE_ERR_ALGORITHM -4 /* algorithm not valid for verb */
|
|
|
|
/* New algorithm-based verb defines (algorithm is a parameter, not implicit) */
|
|
#define VERB_SIGN "sign"
|
|
#define VERB_VERIFY "verify"
|
|
#define VERB_ENCAPSULATE "encapsulate"
|
|
#define VERB_DECAPSULATE "decapsulate"
|
|
#define VERB_DERIVE_SHARED "derive_shared_secret"
|
|
|
|
|
|
/* Known verbs */
|
|
#define VERB_SIGN_EVENT "sign_event"
|
|
#define VERB_GET_PUBLIC_KEY "get_public_key"
|
|
#define VERB_NIP44_ENCRYPT "nip44_encrypt"
|
|
#define VERB_NIP44_DECRYPT "nip44_decrypt"
|
|
#define VERB_NIP04_ENCRYPT "nip04_encrypt"
|
|
#define VERB_NIP04_DECRYPT "nip04_decrypt"
|
|
|
|
/*
|
|
* Check whether `verb` is allowed to execute against `role`.
|
|
* Returns ENFORCE_OK if allowed, or an ENFORCE_ERR_* code.
|
|
*
|
|
* The enforcement rules are:
|
|
* - All nostr verbs (sign_event, get_public_key, nip44_*, nip04_*) require:
|
|
* purpose == PURPOSE_NOSTR and curve == CURVE_SECP256K1
|
|
* - Unknown verbs return ENFORCE_ERR_UNKNOWN_VERB (fail-closed).
|
|
*/
|
|
int enforce_verb_role(const char *verb, const role_entry_t *role);
|
|
|
|
/*
|
|
* Return a human-readable error string for an enforcement error code.
|
|
*/
|
|
const char *enforce_strerror(int err);
|
|
|
|
|
|
/* from policy.h */
|
|
|
|
|
|
#define POLICY_MAX_ENTRIES 32
|
|
#define POLICY_MAX_VERBS 16
|
|
#define POLICY_MAX_ROLES 16
|
|
#define POLICY_MAX_PURPOSES 8
|
|
#define POLICY_VERB_MAX_LEN 32
|
|
#define POLICY_CALLER_MAX_LEN 160
|
|
#define POLICY_MAX_ALGS 16
|
|
#define POLICY_MAX_ALGS 16
|
|
|
|
/* Prompt behavior */
|
|
typedef enum {
|
|
PROMPT_NEVER = 0,
|
|
PROMPT_FIRST_PER_BOOT,
|
|
PROMPT_EVERY_REQUEST,
|
|
PROMPT_DENY
|
|
} prompt_mode_t;
|
|
|
|
typedef enum {
|
|
POLICY_SOURCE_DEFAULT = 0, /* the catch-all entry */
|
|
POLICY_SOURCE_PREAPPROVE, /* from --preapprove CLI flag */
|
|
POLICY_SOURCE_SESSION_GRANT /* from prompt [a] during session */
|
|
} policy_source_t;
|
|
|
|
/* A single policy entry */
|
|
typedef struct {
|
|
char caller[POLICY_CALLER_MAX_LEN]; /* e.g. "uid:1000" or "*" for any */
|
|
char verbs[POLICY_MAX_VERBS][POLICY_VERB_MAX_LEN];
|
|
int verb_count;
|
|
char roles[POLICY_MAX_ROLES][ROLE_NAME_MAX];
|
|
int role_count;
|
|
char purposes[POLICY_MAX_PURPOSES][ROLE_PURPOSE_MAX];
|
|
int purpose_count;
|
|
/* Algorithm-based (new) */
|
|
char algorithms[16][32]; /* algorithm names; POLICY_MAX_ALGS */
|
|
int alg_count;
|
|
int index_min; /* -1 = any */
|
|
int index_max; /* -1 = any */
|
|
/* Common */
|
|
prompt_mode_t prompt;
|
|
policy_source_t source;
|
|
} policy_entry_t;
|
|
|
|
/* Policy table */
|
|
typedef struct {
|
|
policy_entry_t entries[POLICY_MAX_ENTRIES];
|
|
int count;
|
|
} policy_table_t;
|
|
|
|
/* Policy check result */
|
|
#define POLICY_ALLOW 0
|
|
#define POLICY_ALLOW_SESSION_VERB 3
|
|
#define POLICY_ALLOW_SESSION_ALL 4
|
|
#define POLICY_DENY -1
|
|
#define POLICY_PROMPT -2 /* would need user confirmation */
|
|
#define POLICY_NO_MATCH -3 /* no policy entry matched (fail-closed = deny) */
|
|
|
|
/* Initialize policy table */
|
|
void policy_table_init(policy_table_t *table);
|
|
|
|
/* Initialize default policy: allow same-uid, deny others */
|
|
void policy_init_default(policy_table_t *table, uid_t owner_uid);
|
|
|
|
/* Add a policy entry. Returns 0 on success, -1 if full. */
|
|
int policy_table_add(policy_table_t *table, const policy_entry_t *entry);
|
|
|
|
/* Insert an entry before the final catch-all rule. */
|
|
int policy_table_insert_before_last(policy_table_t *table, const policy_entry_t *entry);
|
|
|
|
/* Parse a --preapprove spec into a policy entry. */
|
|
int parse_preapprove_spec(const char *spec, policy_entry_t *out_entry, int *out_nostr_index);
|
|
|
|
/*
|
|
* Check whether caller_id is allowed to invoke `verb` on `role_name` with given `purpose`.
|
|
* Returns POLICY_ALLOW, POLICY_DENY, POLICY_PROMPT, or POLICY_NO_MATCH.
|
|
*/
|
|
int policy_check(const policy_table_t *table, const char *caller_id,
|
|
const char *verb, const char *role_name, const char *purpose,
|
|
policy_source_t *out_source);
|
|
|
|
/* Check whether caller_id is allowed to invoke `verb` with the given
|
|
* algorithm and index (algorithm-based policy). Returns POLICY_ALLOW,
|
|
* POLICY_DENY, POLICY_PROMPT, or POLICY_NO_MATCH. */
|
|
int policy_check_algorithm(const policy_table_t *table, const char *caller_id,
|
|
const char *verb, const char *algorithm, int index,
|
|
policy_source_t *out_source);
|
|
|
|
/* Check whether caller_id is allowed to invoke `verb` with the given
|
|
* algorithm and index (algorithm-based policy). Returns POLICY_ALLOW,
|
|
* POLICY_DENY, POLICY_PROMPT, or POLICY_NO_MATCH. */
|
|
int policy_check_algorithm(const policy_table_t *table, const char *caller_id,
|
|
const char *verb, const char *algorithm, int index,
|
|
policy_source_t *out_source);
|
|
|
|
/* Parse prompt mode from string */
|
|
prompt_mode_t prompt_mode_from_str(const char *s);
|
|
|
|
/* Prompt mode to string */
|
|
const char *prompt_mode_to_str(prompt_mode_t m);
|
|
|
|
|
|
/* from pq_crypto.h */
|
|
|
|
|
|
/* Algorithm identifiers */
|
|
typedef enum {
|
|
CRYPTO_ALG_SECP256K1 = 0, /* existing, Nostr */
|
|
CRYPTO_ALG_ED25519, /* new, SSH signatures */
|
|
CRYPTO_ALG_X25519, /* new, key agreement */
|
|
CRYPTO_ALG_ML_DSA_65, /* new, PQ signatures */
|
|
CRYPTO_ALG_SLH_DSA_128S, /* new, PQ signatures */
|
|
CRYPTO_ALG_ML_KEM_768, /* new, PQ KEM */
|
|
CRYPTO_ALG_UNKNOWN
|
|
} crypto_alg_t;
|
|
|
|
/* Key sizes for each algorithm (compile-time constants) */
|
|
typedef struct {
|
|
size_t priv_key_len;
|
|
size_t pub_key_len;
|
|
size_t sig_len; /* 0 for KEM */
|
|
size_t ciphertext_len; /* 0 for signatures */
|
|
size_t shared_secret_len; /* 0 for signatures */
|
|
} crypto_alg_sizes_t;
|
|
|
|
/* Get size info for an algorithm. Returns NULL for CRYPTO_ALG_UNKNOWN. */
|
|
const crypto_alg_sizes_t *crypto_alg_get_sizes(crypto_alg_t alg);
|
|
|
|
/* Map role_curve_t + role_purpose_t to crypto_alg_t.
|
|
* Returns CRYPTO_ALG_UNKNOWN for unsupported combinations. */
|
|
crypto_alg_t crypto_alg_from_role(role_curve_t curve, role_purpose_t purpose);
|
|
|
|
/* Convert crypto_alg_t to string. Returns NULL for unknown. */
|
|
const char *crypto_alg_to_str(crypto_alg_t alg);
|
|
|
|
/* Parse string to crypto_alg_t. Returns CRYPTO_ALG_UNKNOWN for unrecognized. */
|
|
crypto_alg_t crypto_alg_from_str(const char *s);
|
|
/* ed25519: derive keypair from a 32-byte seed.
|
|
* priv_out and pub_out must be at least 32 bytes each.
|
|
* Returns 0 on success, -1 on error. */
|
|
int crypto_ed25519_keygen_from_seed(const unsigned char *seed, size_t seed_len,
|
|
unsigned char *priv_out, unsigned char *pub_out);
|
|
|
|
/* ed25519: sign a message. priv is 32-byte private key.
|
|
* sig_out must be at least 64 bytes. Returns 0 on success, -1 on error. */
|
|
int crypto_ed25519_sign(const unsigned char *priv, size_t priv_len,
|
|
const unsigned char *msg, size_t msg_len,
|
|
unsigned char *sig_out, size_t *sig_out_len);
|
|
|
|
/* ed25519: verify a signature. pub is 32-byte public key.
|
|
* Returns 0 on valid, 1 on invalid, -1 on error. */
|
|
int crypto_ed25519_verify(const unsigned char *pub, size_t pub_len,
|
|
const unsigned char *msg, size_t msg_len,
|
|
const unsigned char *sig, size_t sig_len);
|
|
|
|
/* x25519: derive keypair from a 32-byte seed.
|
|
* priv_out and pub_out must be at least 32 bytes each.
|
|
* Returns 0 on success, -1 on error. */
|
|
int crypto_x25519_keygen_from_seed(const unsigned char *seed, size_t seed_len,
|
|
unsigned char *priv_out, unsigned char *pub_out);
|
|
|
|
/* x25519: derive shared secret from our private key and peer's public key.
|
|
* shared_out must be at least 32 bytes. Returns 0 on success, -1 on error. */
|
|
int crypto_x25519_ecdh(const unsigned char *our_priv, size_t priv_len,
|
|
const unsigned char *peer_pub, size_t pub_len,
|
|
unsigned char *shared_out, size_t *shared_out_len);
|
|
|
|
/* Derive a 32-byte seed from a mnemonic using a BIP-44 path (SLIP-0010).
|
|
* seed_out must be at least 32 bytes. Returns 0 on success, -1 on error. */
|
|
int crypto_derive_seed_from_mnemonic(const char *mnemonic, const char *path,
|
|
unsigned char *seed_out, size_t seed_out_len);
|
|
/* ML-DSA-65: generate keypair from a 32-byte seed (deterministic).
|
|
* priv_out must be at least 4032 bytes, pub_out at least 1952 bytes.
|
|
* Returns 0 on success, -1 on error. */
|
|
int crypto_ml_dsa_65_keygen_from_seed(const unsigned char *seed, size_t seed_len,
|
|
unsigned char *priv_out, unsigned char *pub_out);
|
|
|
|
/* ML-DSA-65: sign a message. priv is 4032-byte private key.
|
|
* sig_out must be at least 3309 bytes. Returns 0 on success, -1 on error. */
|
|
int crypto_ml_dsa_65_sign(const unsigned char *priv, size_t priv_len,
|
|
const unsigned char *msg, size_t msg_len,
|
|
unsigned char *sig_out, size_t *sig_out_len);
|
|
|
|
/* ML-DSA-65: verify a signature. pub is 1952-byte public key.
|
|
* Returns 0 on valid, 1 on invalid, -1 on error. */
|
|
int crypto_ml_dsa_65_verify(const unsigned char *pub, size_t pub_len,
|
|
const unsigned char *msg, size_t msg_len,
|
|
const unsigned char *sig, size_t sig_len);
|
|
|
|
|
|
/* SLH-DSA-128s: generate keypair from a 32-byte seed (deterministic).
|
|
* priv_out must be at least 64 bytes, pub_out at least 32 bytes.
|
|
* Returns 0 on success, -1 on error. */
|
|
int crypto_slh_dsa_128s_keygen_from_seed(const unsigned char *seed, size_t seed_len,
|
|
unsigned char *priv_out, unsigned char *pub_out);
|
|
|
|
/* SLH-DSA-128s: sign a message. priv is 64-byte private key.
|
|
* sig_out must be at least 7856 bytes. Returns 0 on success, -1 on error. */
|
|
int crypto_slh_dsa_128s_sign(const unsigned char *priv, size_t priv_len,
|
|
const unsigned char *msg, size_t msg_len,
|
|
unsigned char *sig_out, size_t *sig_out_len);
|
|
|
|
/* SLH-DSA-128s: verify a signature. pub is 32-byte public key.
|
|
* Returns 0 on valid, 1 on invalid, -1 on error. */
|
|
int crypto_slh_dsa_128s_verify(const unsigned char *pub, size_t pub_len,
|
|
const unsigned char *msg, size_t msg_len,
|
|
const unsigned char *sig, size_t sig_len);
|
|
|
|
/* ML-KEM-768: generate keypair from a 32-byte seed (deterministic).
|
|
* priv_out must be at least 2400 bytes, pub_out at least 1184 bytes.
|
|
* Returns 0 on success, -1 on error. */
|
|
int crypto_ml_kem_768_keygen_from_seed(const unsigned char *seed, size_t seed_len,
|
|
unsigned char *priv_out, unsigned char *pub_out);
|
|
|
|
/* ML-KEM-768: encapsulate. pub is 1184-byte public key.
|
|
* ct_out must be at least 1088 bytes, ss_out at least 32 bytes.
|
|
* Returns 0 on success, -1 on error. */
|
|
int crypto_ml_kem_768_encaps(const unsigned char *pub, size_t pub_len,
|
|
unsigned char *ct_out, unsigned char *ss_out);
|
|
|
|
/* ML-KEM-768: decapsulate. priv is 2400-byte secret key, ct is 1088-byte ciphertext.
|
|
* ss_out must be at least 32 bytes. Returns 0 on success, -1 on error. */
|
|
int crypto_ml_kem_768_decaps(const unsigned char *priv, size_t priv_len,
|
|
const unsigned char *ct, size_t ct_len,
|
|
unsigned char *ss_out);
|
|
/* Deterministic PRNG for PQ keygen (replaces PQClean randombytes()). */
|
|
void pq_drbg_init(const unsigned char *seed, size_t seed_len);
|
|
int pq_drbg_randombytes(unsigned char *buf, size_t len);
|
|
void pq_drbg_zeroize(void);
|
|
|
|
|
|
|
|
|
|
/* from crypto.h */
|
|
|
|
|
|
/* Per-role derived key material (stored in secure memory) */
|
|
typedef struct {
|
|
secure_buf_t private_key; /* mlock'd, variable size per algorithm */
|
|
secure_buf_t public_key; /* mlock'd, variable size per algorithm */
|
|
char pubkey_hex[8192]; /* hex-encoded public key (PQ pubkeys are large) */
|
|
char npub[128]; /* bech32 npub (secp256k1 only, empty for others) */
|
|
crypto_alg_t alg; /* which algorithm this key was derived for */
|
|
int valid;
|
|
} derived_key_t;
|
|
|
|
/* Key store — holds derived keys for all roles */
|
|
typedef struct {
|
|
derived_key_t keys[ROLE_TABLE_MAX_ENTRIES];
|
|
int count;
|
|
} key_store_t;
|
|
|
|
/* Derive keys for all roles in the table using the loaded mnemonic.
|
|
* Populates key_store and sets role->pubkey_hex and role->derived for each role.
|
|
* Only derives for roles with purpose=nostr and curve=secp256k1 (for now).
|
|
* Returns number of keys derived, or -1 on error. */
|
|
int crypto_derive_all(key_store_t *store, role_table_t *table, const mnemonic_state_t *mnemonic);
|
|
|
|
/* Get the derived private key for a role (by table index). Returns NULL if not derived. */
|
|
const unsigned char *crypto_get_private_key(const key_store_t *store, int role_index);
|
|
|
|
/* Get the derived public key hex for a role. Returns NULL if not derived. */
|
|
const char *crypto_get_pubkey_hex(const key_store_t *store, int role_index);
|
|
|
|
/* Sign a Nostr event. event_json is the unsigned event JSON string.
|
|
* Returns a newly-allocated string containing the signed event JSON, or NULL on error.
|
|
* Caller must free() the returned string. */
|
|
char *crypto_sign_event(const key_store_t *store, int role_index, const char *event_json);
|
|
|
|
/* Zeroize all derived keys in the store. */
|
|
void crypto_wipe(key_store_t *store);
|
|
|
|
|
|
|
|
/* from alg_api.h */
|
|
|
|
|
|
/* Check whether a verb is valid for an algorithm (algorithm-based enforcement).
|
|
* Returns ENFORCE_OK, ENFORCE_ERR_ALGORITHM, or ENFORCE_ERR_UNKNOWN_VERB.
|
|
* Does NOT check purpose — purpose is irrelevant for the new verbs. */
|
|
int enforce_verb_algorithm(const char *verb, crypto_alg_t alg);
|
|
|
|
/* secp256k1 Schnorr (BIP-340) sign arbitrary bytes.
|
|
* priv is 32-byte scalar, pub is 32-byte x-only pubkey, sig_out is 64 bytes.
|
|
* Hashes the message with SHA-256 before signing (like Nostr event signing).
|
|
* Returns 0 on success, -1 on error. */
|
|
int crypto_secp256k1_schnorr_sign(const unsigned char *priv, size_t priv_len,
|
|
const unsigned char *msg, size_t msg_len,
|
|
unsigned char *sig_out, size_t *sig_out_len);
|
|
|
|
/* secp256k1 Schnorr (BIP-340) verify.
|
|
* pub is 32-byte x-only pubkey, sig is 64 bytes.
|
|
* Returns 0 on valid, 1 on invalid, -1 on error. */
|
|
int crypto_secp256k1_schnorr_verify(const unsigned char *pub, size_t pub_len,
|
|
const unsigned char *msg, size_t msg_len,
|
|
const unsigned char *sig, size_t sig_len);
|
|
|
|
/* secp256k1 ECDSA sign arbitrary bytes.
|
|
* priv is 32-byte scalar, sig_out must be at least 64 bytes (compact DER r||s).
|
|
* Hashes the message with SHA-256 before signing.
|
|
* Returns 0 on success, -1 on error. */
|
|
int crypto_secp256k1_ecdsa_sign(const unsigned char *priv, size_t priv_len,
|
|
const unsigned char *msg, size_t msg_len,
|
|
unsigned char *sig_out, size_t *sig_out_len);
|
|
|
|
/* secp256k1 ECDSA verify.
|
|
* pub is 32-byte x-only pubkey (converted internally to compressed form).
|
|
* sig is 64-byte compact (r||s). Returns 0 on valid, 1 on invalid, -1 on error. */
|
|
int crypto_secp256k1_ecdsa_verify(const unsigned char *pub, size_t pub_len,
|
|
const unsigned char *msg, size_t msg_len,
|
|
const unsigned char *sig, size_t sig_len);
|
|
|
|
/* ---- Algorithm key cache ----
|
|
* On-demand key derivation by algorithm+index, separate from the role-based
|
|
* key_store. Holds up to ALG_KEY_CACHE_MAX derived keys in secure memory.
|
|
* When full, the oldest entry is evicted (FIFO). */
|
|
|
|
#define ALG_KEY_CACHE_MAX 32
|
|
|
|
typedef struct {
|
|
crypto_alg_t alg;
|
|
int index;
|
|
secure_buf_t private_key;
|
|
secure_buf_t public_key;
|
|
char pubkey_hex[8192];
|
|
char key_id[17];
|
|
int valid;
|
|
} alg_key_entry_t;
|
|
|
|
typedef struct {
|
|
alg_key_entry_t entries[ALG_KEY_CACHE_MAX];
|
|
int count;
|
|
} algorithm_key_cache_t;
|
|
|
|
/* Initialize an empty cache. */
|
|
void alg_key_cache_init(algorithm_key_cache_t *cache);
|
|
|
|
/* Zeroize and free all entries. Idempotent. */
|
|
void alg_key_cache_wipe(algorithm_key_cache_t *cache);
|
|
|
|
/* Look up a cached entry by (alg, index). Returns NULL if not present. */
|
|
const alg_key_entry_t *alg_key_cache_get(algorithm_key_cache_t *cache, crypto_alg_t alg, int index);
|
|
|
|
/* Derive a key on-demand by (alg, index) and store it in the cache.
|
|
* Uses the standard derivation path for the algorithm.
|
|
* Returns 0 on success, -1 on error. */
|
|
int alg_key_cache_derive(algorithm_key_cache_t *cache, const mnemonic_state_t *mnemonic, crypto_alg_t alg, int index);
|
|
|
|
|
|
/* from dispatcher.h */
|
|
|
|
|
|
/* Dispatcher context — holds references to shared state */
|
|
typedef struct {
|
|
role_table_t *role_table;
|
|
mnemonic_state_t *mnemonic;
|
|
key_store_t *key_store;
|
|
algorithm_key_cache_t *alg_key_cache; /* algorithm-based on-demand keys */
|
|
} dispatcher_ctx_t;
|
|
|
|
/* Initialize dispatcher context */
|
|
void dispatcher_init(dispatcher_ctx_t *ctx, role_table_t *table, mnemonic_state_t *mnemonic, key_store_t *key_store, algorithm_key_cache_t *alg_key_cache);
|
|
|
|
/*
|
|
* Process a JSON-RPC request string and produce a JSON-RPC response string.
|
|
*
|
|
* The caller owns the returned string and must free() it.
|
|
* Returns NULL only on catastrophic allocation failure.
|
|
*
|
|
* Response format on success:
|
|
* { "id": "...", "result": "..." }
|
|
*
|
|
* Response format on error:
|
|
* { "id": "...", "error": { "code": <int>, "message": "..." } }
|
|
*
|
|
* Error codes:
|
|
* -32700 Parse error (invalid JSON)
|
|
* -32600 Invalid request (missing id/method/params)
|
|
* -32601 Method not found (unknown verb after enforcement)
|
|
* -32602 Invalid params
|
|
* 1001 ambiguous_role_selector
|
|
* 1002 role_not_found
|
|
* 1003 no_default_role
|
|
* 1004 purpose_mismatch
|
|
* 1005 curve_mismatch
|
|
* 1006 mnemonic_not_loaded
|
|
*/
|
|
char *dispatcher_handle_request(dispatcher_ctx_t *ctx, const char *json_request);
|
|
|
|
|
|
/* from server.h */
|
|
|
|
|
|
#define SERVER_SOCKET_NAME_MAX 108
|
|
#define SERVER_MAX_MSG_SIZE 65536
|
|
|
|
#define NSIGNER_LISTEN_UNIX 0
|
|
#define NSIGNER_LISTEN_STDIO 1
|
|
#define NSIGNER_LISTEN_QREXEC 2
|
|
#define NSIGNER_LISTEN_TCP 3
|
|
|
|
#define NSIGNER_AUTH_OFF 0
|
|
#define NSIGNER_AUTH_OPTIONAL 1
|
|
#define NSIGNER_AUTH_REQUIRED 2
|
|
|
|
/* Caller identity */
|
|
typedef struct {
|
|
uid_t uid;
|
|
gid_t gid;
|
|
pid_t pid;
|
|
int kind;
|
|
char caller_id[POLICY_CALLER_MAX_LEN]; /* "uid:<n>" or "qubes:<vm>" */
|
|
char source_qube[64];
|
|
} caller_identity_t;
|
|
|
|
/* Server context */
|
|
#define INDEX_WHITELIST_MAX 256
|
|
#define INDEX_WHITELIST_BITMAP_SIZE (INDEX_WHITELIST_MAX / 8)
|
|
|
|
typedef struct {
|
|
char socket_name[SERVER_SOCKET_NAME_MAX]; /* abstract namespace name (without \0 prefix) */
|
|
char last_error[256];
|
|
int listen_fd;
|
|
int running;
|
|
int listen_mode;
|
|
int stdio_handled;
|
|
dispatcher_ctx_t *dispatcher;
|
|
policy_table_t *policy;
|
|
int socket_name_explicit;
|
|
int auth_mode;
|
|
int auth_skew_seconds;
|
|
int bridge_source_trusted;
|
|
int index_whitelist_active;
|
|
unsigned char index_whitelist[INDEX_WHITELIST_BITMAP_SIZE];
|
|
} server_ctx_t;
|
|
|
|
/* Initialize server context. socket_name is the abstract namespace name (e.g. "nsigner").
|
|
* socket_name_explicit should be non-zero when provided via --socket-name override. */
|
|
void server_init(server_ctx_t *ctx, const char *socket_name, int socket_name_explicit,
|
|
int listen_mode,
|
|
int auth_mode,
|
|
int auth_skew_seconds,
|
|
dispatcher_ctx_t *dispatcher, policy_table_t *policy);
|
|
|
|
/* Start listening. Returns 0 on success, -1 on error. */
|
|
int server_start(server_ctx_t *ctx);
|
|
|
|
/* Get human-readable description of last server error. */
|
|
const char *server_last_error(const server_ctx_t *ctx);
|
|
|
|
/* Handle one pending connection (non-blocking). Returns 1 if handled, 0 if nothing pending, -1 on error.
|
|
* activity_cb is called with a description string for the TUI activity log. */
|
|
typedef void (*server_activity_cb)(const char *message, void *user_data);
|
|
int server_handle_one(server_ctx_t *ctx, server_activity_cb cb, void *cb_data);
|
|
|
|
/* Stop server and close socket */
|
|
void server_stop(server_ctx_t *ctx);
|
|
|
|
/* Extract caller identity from connected fd */
|
|
int server_get_caller(int fd, caller_identity_t *out);
|
|
|
|
/* Configure interactive policy-prompt behavior for current session */
|
|
void server_set_prompt_always_allow(int enabled);
|
|
|
|
/* Mark the unix listener as a trusted bridge socket (qrexec source preamble) */
|
|
void server_set_bridge_source_trusted(server_ctx_t *ctx, int enabled);
|
|
|
|
/* Set the nostr_index whitelist from a spec string ("all", "1,3,4", "0-3", "0-3,7,9") */
|
|
int server_set_index_whitelist(server_ctx_t *ctx, const char *spec);
|
|
|
|
/* Configure non-interactive prompt fallback: -1 disabled, POLICY_ALLOW, or POLICY_DENY */
|
|
void server_set_noninteractive_prompt_default(int decision);
|
|
|
|
typedef struct {
|
|
const caller_identity_t *caller;
|
|
const char *method;
|
|
const char *role_name;
|
|
const char *purpose;
|
|
int pending_derivation;
|
|
const char *fips_peer_npub;
|
|
const char *fips_peer_name;
|
|
} server_approval_request_t;
|
|
|
|
typedef int (*server_approval_cb)(const server_approval_request_t *req, void *user_data);
|
|
void server_set_approval_cb(server_approval_cb cb, void *user_data);
|
|
|
|
/* from socket_name.h */
|
|
|
|
|
|
/*
|
|
* Generate random socket name in format: nsigner_<word1>_<word2>
|
|
* Returns 0 on success, -1 on error.
|
|
*/
|
|
int socket_name_random(char *out, size_t out_len);
|
|
|
|
|
|
/* from main.h */
|
|
/*
|
|
* nsigner main header - version information
|
|
*
|
|
* Version macros are auto-updated by increment_and_push.sh.
|
|
*/
|
|
|
|
|
|
/* Version information (auto-updated by build/version tooling) */
|
|
#define NSIGNER_VERSION_MAJOR 0
|
|
#define NSIGNER_VERSION_MINOR 0
|
|
#define NSIGNER_VERSION_PATCH 46
|
|
#define NSIGNER_VERSION "v0.0.46"
|
|
|
|
|
|
/* NSIGNER_HEADERLESS_DECLS_END */
|
|
|
|
int transport_send_framed(int fd, const char *payload);
|
|
int transport_recv_framed(int fd, char **out_payload, size_t max_size);
|
|
|
|
#include "auth_envelope.h"
|
|
#include "tui_continuous.h"
|
|
#include <nostr_core/nostr_common.h>
|
|
|
|
#include <arpa/inet.h>
|
|
#include <ctype.h>
|
|
#include <errno.h>
|
|
#include <poll.h>
|
|
#include <signal.h>
|
|
#include <stdarg.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <fcntl.h>
|
|
#include <limits.h>
|
|
#include <strings.h>
|
|
#include <sys/socket.h>
|
|
#include <sys/types.h>
|
|
#include <sys/un.h>
|
|
#include <termios.h>
|
|
#include <time.h>
|
|
#include <unistd.h>
|
|
|
|
#define NSIGNER_DEFAULT_SOCKET_NAME "nsigner"
|
|
#define NSIGNER_QREXEC_SERVICE_NAME "qubes.NsignerRpc"
|
|
#define ACTIVITY_LOG_CAP 16
|
|
#define CONNECTION_INFO_CAP 8
|
|
|
|
typedef struct {
|
|
char lines[ACTIVITY_LOG_CAP][256];
|
|
int count;
|
|
} activity_log_t;
|
|
|
|
static volatile sig_atomic_t g_running = 1;
|
|
static activity_log_t g_activity_log;
|
|
static int g_auto_approve = 0;
|
|
|
|
typedef enum {
|
|
MNEMONIC_SOURCE_TUI = 0,
|
|
MNEMONIC_SOURCE_STDIN,
|
|
MNEMONIC_SOURCE_FD
|
|
} mnemonic_source_kind_t;
|
|
|
|
typedef struct {
|
|
mnemonic_source_kind_t kind;
|
|
int fd;
|
|
} mnemonic_source_t;
|
|
|
|
static mnemonic_source_kind_t g_startup_mnemonic_source_kind = MNEMONIC_SOURCE_TUI;
|
|
static char g_connection_info[CONNECTION_INFO_CAP][192];
|
|
static int g_connection_info_count = 0;
|
|
|
|
static const TuiMenuItem g_main_menu_items[] = {
|
|
{"^_q^:/x quit", 'q'},
|
|
{"^_l^: lock/reunlock", 'l'},
|
|
{"^_r^: refresh", 'r'},
|
|
{"^_A^: toggle auto-approve", 'a'}
|
|
};
|
|
|
|
typedef struct {
|
|
const role_table_t *role_table;
|
|
} role_table_view_data_t;
|
|
|
|
typedef struct {
|
|
const role_table_t *role_table;
|
|
const mnemonic_state_t *mnemonic;
|
|
int *derived_count;
|
|
const char *socket_name;
|
|
} main_tui_context_t;
|
|
|
|
static void render_status(const role_table_t *role_table,
|
|
const mnemonic_state_t *mnemonic,
|
|
int derived_count,
|
|
const char *socket_name);
|
|
|
|
static void connection_info_clear(void) {
|
|
g_connection_info_count = 0;
|
|
memset(g_connection_info, 0, sizeof(g_connection_info));
|
|
}
|
|
|
|
static void connection_info_add(const char *fmt, ...) {
|
|
va_list ap;
|
|
|
|
if (fmt == NULL || g_connection_info_count >= CONNECTION_INFO_CAP) {
|
|
return;
|
|
}
|
|
|
|
va_start(ap, fmt);
|
|
(void)vsnprintf(g_connection_info[g_connection_info_count],
|
|
sizeof(g_connection_info[g_connection_info_count]),
|
|
fmt,
|
|
ap);
|
|
va_end(ap);
|
|
|
|
g_connection_info_count++;
|
|
}
|
|
|
|
static void handle_signal(int sig) {
|
|
(void)sig;
|
|
g_running = 0;
|
|
}
|
|
|
|
static int read_line_stdin(char *buf, size_t buf_sz) {
|
|
size_t len;
|
|
|
|
if (buf == NULL || buf_sz == 0) {
|
|
return -1;
|
|
}
|
|
|
|
if (fgets(buf, (int)buf_sz, stdin) == NULL) {
|
|
return -1;
|
|
}
|
|
|
|
len = strlen(buf);
|
|
while (len > 0 && (buf[len - 1] == '\n' || buf[len - 1] == '\r')) {
|
|
buf[len - 1] = '\0';
|
|
len--;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
static int read_cmd_output_local(const char *cmd, char **out_buf) {
|
|
FILE *fp;
|
|
char chunk[512];
|
|
char *buf = NULL;
|
|
size_t used = 0;
|
|
size_t cap = 0;
|
|
|
|
if (cmd == NULL || out_buf == NULL) {
|
|
return -1;
|
|
}
|
|
|
|
*out_buf = NULL;
|
|
fp = popen(cmd, "r");
|
|
if (fp == NULL) {
|
|
return -1;
|
|
}
|
|
|
|
while (fgets(chunk, sizeof(chunk), fp) != NULL) {
|
|
size_t n = strlen(chunk);
|
|
if (used + n + 1 > cap) {
|
|
size_t new_cap = (cap == 0) ? 2048 : cap * 2;
|
|
while (new_cap < used + n + 1) {
|
|
new_cap *= 2;
|
|
}
|
|
{
|
|
char *tmp = (char *)realloc(buf, new_cap);
|
|
if (tmp == NULL) {
|
|
free(buf);
|
|
(void)pclose(fp);
|
|
return -1;
|
|
}
|
|
buf = tmp;
|
|
cap = new_cap;
|
|
}
|
|
}
|
|
memcpy(buf + used, chunk, n);
|
|
used += n;
|
|
}
|
|
|
|
(void)pclose(fp);
|
|
|
|
if (buf == NULL) {
|
|
return -1;
|
|
}
|
|
|
|
buf[used] = '\0';
|
|
*out_buf = buf;
|
|
return 0;
|
|
}
|
|
|
|
static int lookup_local_fips_identity(char *out_ipv6,
|
|
size_t out_ipv6_sz,
|
|
char *out_npub,
|
|
size_t out_npub_sz) {
|
|
char *json = NULL;
|
|
cJSON *root = NULL;
|
|
cJSON *ipv6_item;
|
|
cJSON *npub_item;
|
|
|
|
if (out_ipv6 == NULL || out_ipv6_sz == 0 || out_npub == NULL || out_npub_sz == 0) {
|
|
return -1;
|
|
}
|
|
|
|
out_ipv6[0] = '\0';
|
|
out_npub[0] = '\0';
|
|
|
|
if (read_cmd_output_local("fipsctl show status 2>/dev/null", &json) != 0) {
|
|
return -1;
|
|
}
|
|
|
|
root = cJSON_Parse(json);
|
|
free(json);
|
|
if (root == NULL) {
|
|
return -1;
|
|
}
|
|
|
|
ipv6_item = cJSON_GetObjectItemCaseSensitive(root, "ipv6_addr");
|
|
npub_item = cJSON_GetObjectItemCaseSensitive(root, "npub");
|
|
|
|
if (cJSON_IsString(ipv6_item) && ipv6_item->valuestring != NULL) {
|
|
strncpy(out_ipv6, ipv6_item->valuestring, out_ipv6_sz - 1);
|
|
out_ipv6[out_ipv6_sz - 1] = '\0';
|
|
}
|
|
|
|
if (cJSON_IsString(npub_item) && npub_item->valuestring != NULL) {
|
|
strncpy(out_npub, npub_item->valuestring, out_npub_sz - 1);
|
|
out_npub[out_npub_sz - 1] = '\0';
|
|
}
|
|
|
|
cJSON_Delete(root);
|
|
return (out_ipv6[0] != '\0' && out_npub[0] != '\0') ? 0 : -1;
|
|
}
|
|
|
|
static int extract_listen_port(const char *listen_target, char *out_port, size_t out_port_sz) {
|
|
const char *port;
|
|
size_t i;
|
|
|
|
if (listen_target == NULL || out_port == NULL || out_port_sz == 0) {
|
|
return -1;
|
|
}
|
|
|
|
out_port[0] = '\0';
|
|
|
|
port = strrchr(listen_target, ':');
|
|
if (port == NULL || *(port + 1) == '\0') {
|
|
return -1;
|
|
}
|
|
port++;
|
|
|
|
for (i = 0; port[i] != '\0'; ++i) {
|
|
if (!isdigit((unsigned char)port[i])) {
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
strncpy(out_port, port, out_port_sz - 1);
|
|
out_port[out_port_sz - 1] = '\0';
|
|
return 0;
|
|
}
|
|
|
|
static int connect_abstract_socket(const char *name) {
|
|
int fd;
|
|
struct sockaddr_un addr;
|
|
socklen_t addr_len;
|
|
|
|
if (name == NULL || name[0] == '\0') {
|
|
return -1;
|
|
}
|
|
|
|
fd = socket(AF_UNIX, SOCK_STREAM, 0);
|
|
if (fd < 0) {
|
|
return -1;
|
|
}
|
|
|
|
memset(&addr, 0, sizeof(addr));
|
|
addr.sun_family = AF_UNIX;
|
|
addr.sun_path[0] = '\0';
|
|
strncpy(&addr.sun_path[1], name, sizeof(addr.sun_path) - 2);
|
|
addr.sun_path[sizeof(addr.sun_path) - 1] = '\0';
|
|
addr_len = (socklen_t)(sizeof(sa_family_t) + 1 + strlen(name));
|
|
|
|
if (connect(fd, (struct sockaddr *)&addr, addr_len) != 0) {
|
|
close(fd);
|
|
return -1;
|
|
}
|
|
|
|
return fd;
|
|
}
|
|
|
|
static void print_usage(const char *program_name) {
|
|
tui_print("nsigner - single-binary signer program");
|
|
tui_print("Usage:");
|
|
tui_print(" %s [--socket-name|--name|-n <name>] [--listen|-l <unix|stdio|qrexec|tcp:HOST:PORT>]", program_name);
|
|
tui_print(" [--preapprove|-p <SPEC>]... [--auth|-a <off|optional|required>]");
|
|
tui_print(" [--mnemonic-stdin|--mnemonic-fd <N>] [--allow-all|-A]");
|
|
tui_print(" [--bridge-source-trusted]");
|
|
tui_print(" Run signer server (unix mode has TUI)");
|
|
tui_print(" %s [--socket-name|--name|-n <name>] client '<json>' Send JSON-RPC request", program_name);
|
|
tui_print(" %s [--socket-name|--name|-n <name>] client - Read JSON-RPC request from stdin", program_name);
|
|
tui_print(" %s [--socket-name|--name|-n <name>] bridge [--to <name>] qrexec -> unix socket relay", program_name);
|
|
tui_print(" %s list List running nsigner abstract sockets", program_name);
|
|
tui_print(" %s --help", program_name);
|
|
tui_print(" %s --version", program_name);
|
|
tui_print("");
|
|
tui_print("Options:");
|
|
tui_print(" --listen, -l MODE Listener transport: unix|stdio|qrexec|tcp:HOST:PORT");
|
|
tui_print(" --preapprove, -p SPEC");
|
|
tui_print(" Pre-approve a caller for a role (repeatable)");
|
|
tui_print(" SPEC: caller=<id>,role=<name> or caller=<id>,nostr_index=<n>");
|
|
tui_print(" --auth, -a MODE Auth envelope policy per listener: off|optional|required");
|
|
tui_print(" --mnemonic-stdin Read mnemonic from stdin (one line) at startup");
|
|
tui_print(" --mnemonic-fd N Read mnemonic from inherited fd N (one line) at startup");
|
|
tui_print(" --allow-all, -A Allow all policy prompts for this server session");
|
|
tui_print(" --bridge-source-trusted Accept qrexec_source preamble on unix connections (bridge mode)");
|
|
tui_print(" --allow-index SPEC Restrict which nostr_index values this session can access");
|
|
tui_print(" SPEC: 'all' (default), '1,3,4', '0-3', or '0-3,7,9'");
|
|
}
|
|
|
|
static int extract_nsigner_socket_from_proc_line(const char *line,
|
|
char *with_at,
|
|
size_t with_at_sz,
|
|
char *without_at,
|
|
size_t without_at_sz) {
|
|
const char *p;
|
|
const char *end;
|
|
size_t len_with_at;
|
|
|
|
if (line == NULL) {
|
|
return -1;
|
|
}
|
|
|
|
p = strstr(line, "@nsigner");
|
|
if (p == NULL) {
|
|
return -1;
|
|
}
|
|
if (p[8] != '\0' && p[8] != '\n' && p[8] != ' ' && p[8] != '\t' && p[8] != '_') {
|
|
return -1;
|
|
}
|
|
|
|
end = p;
|
|
while (*end != '\0' && *end != '\n' && *end != ' ' && *end != '\t') {
|
|
end++;
|
|
}
|
|
|
|
len_with_at = (size_t)(end - p);
|
|
if (len_with_at <= 1 || len_with_at > SERVER_SOCKET_NAME_MAX) {
|
|
return -1;
|
|
}
|
|
|
|
if (with_at != NULL && with_at_sz > 0) {
|
|
size_t copy_len = (len_with_at < (with_at_sz - 1)) ? len_with_at : (with_at_sz - 1);
|
|
memcpy(with_at, p, copy_len);
|
|
with_at[copy_len] = '\0';
|
|
}
|
|
|
|
if (without_at != NULL && without_at_sz > 0) {
|
|
size_t len_without_at = len_with_at - 1;
|
|
size_t copy_len = (len_without_at < (without_at_sz - 1)) ? len_without_at : (without_at_sz - 1);
|
|
memcpy(without_at, p + 1, copy_len);
|
|
without_at[copy_len] = '\0';
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int list_sockets_main(void) {
|
|
FILE *fp;
|
|
char line[512];
|
|
int found = 0;
|
|
|
|
fp = fopen("/proc/net/unix", "r");
|
|
if (fp == NULL) {
|
|
perror("fopen(/proc/net/unix)");
|
|
return 1;
|
|
}
|
|
|
|
while (fgets(line, sizeof(line), fp) != NULL) {
|
|
char name_with_at[SERVER_SOCKET_NAME_MAX + 1];
|
|
if (extract_nsigner_socket_from_proc_line(line, name_with_at, sizeof(name_with_at), NULL, 0) == 0) {
|
|
printf("%s\n", name_with_at);
|
|
found = 1;
|
|
}
|
|
}
|
|
|
|
fclose(fp);
|
|
|
|
if (!found) {
|
|
printf("(none)\n");
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int discover_single_socket_name(char *out, size_t out_len) {
|
|
FILE *fp;
|
|
char line[512];
|
|
int count = 0;
|
|
|
|
if (out == NULL || out_len == 0) {
|
|
return -1;
|
|
}
|
|
|
|
out[0] = '\0';
|
|
fp = fopen("/proc/net/unix", "r");
|
|
if (fp == NULL) {
|
|
return -1;
|
|
}
|
|
|
|
while (fgets(line, sizeof(line), fp) != NULL) {
|
|
char name_no_at[SERVER_SOCKET_NAME_MAX + 1];
|
|
if (extract_nsigner_socket_from_proc_line(line, NULL, 0, name_no_at, sizeof(name_no_at)) != 0) {
|
|
continue;
|
|
}
|
|
|
|
count++;
|
|
if (count == 1) {
|
|
strncpy(out, name_no_at, out_len - 1);
|
|
out[out_len - 1] = '\0';
|
|
}
|
|
}
|
|
|
|
fclose(fp);
|
|
|
|
return (count == 1 && out[0] != '\0') ? 0 : -1;
|
|
}
|
|
|
|
static int client_main(int argc, char *argv[], const char *socket_name, int socket_name_explicit) {
|
|
int fd;
|
|
char *request = NULL;
|
|
char *response = NULL;
|
|
char stdin_buf[SERVER_MAX_MSG_SIZE + 1];
|
|
|
|
if (argc < 1) {
|
|
fprintf(stderr, "Usage: nsigner [--socket-name|--name|-n <name>] client '<json-rpc-request>' | -\n");
|
|
return 1;
|
|
}
|
|
|
|
if (strcmp(argv[0], "-") == 0) {
|
|
if (read_line_stdin(stdin_buf, sizeof(stdin_buf)) != 0) {
|
|
fprintf(stderr, "Failed to read request from stdin\n");
|
|
return 1;
|
|
}
|
|
request = stdin_buf;
|
|
} else {
|
|
request = argv[0];
|
|
}
|
|
|
|
if (!socket_name_explicit) {
|
|
char discovered[SERVER_SOCKET_NAME_MAX];
|
|
if (discover_single_socket_name(discovered, sizeof(discovered)) == 0) {
|
|
socket_name = discovered;
|
|
}
|
|
}
|
|
|
|
fd = connect_abstract_socket(socket_name);
|
|
if (fd < 0) {
|
|
fprintf(stderr, "Failed to connect to @%s: %s\n", socket_name, strerror(errno));
|
|
return 1;
|
|
}
|
|
|
|
if (transport_send_framed(fd, request) != 0) {
|
|
perror("send");
|
|
close(fd);
|
|
return 1;
|
|
}
|
|
|
|
if (transport_recv_framed(fd, &response, SERVER_MAX_MSG_SIZE) != 0) {
|
|
perror("recv");
|
|
close(fd);
|
|
return 1;
|
|
}
|
|
|
|
printf("%s\n", response);
|
|
|
|
free(response);
|
|
close(fd);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* bridge_main — stateless qrexec → unix-socket relay.
|
|
*
|
|
* Used as the qubes.NsignerRpc service entrypoint. Reads one framed
|
|
* JSON-RPC request from stdin (qrexec), forwards it to a persistent
|
|
* nsigner --listen unix process, and relays one framed response back
|
|
* to stdout. Before the request, sends a source-qube preamble so the
|
|
* persistent signer can tag the caller as qubes:<source-vm>.
|
|
*
|
|
* The bridge holds no secrets and no mnemonic. It is a dumb pipe.
|
|
*
|
|
* Usage: nsigner bridge [--to <socket-name>]
|
|
* --to <name> abstract unix socket name (default: nsigner)
|
|
*
|
|
* Environment:
|
|
* QREXEC_REMOTE_DOMAIN set by qrexec to the source qube name
|
|
*/
|
|
static int bridge_main(int argc, char *argv[], const char *socket_name, int socket_name_explicit) {
|
|
const char *target_socket = socket_name;
|
|
char discovered[SERVER_SOCKET_NAME_MAX];
|
|
int fd;
|
|
char *request = NULL;
|
|
char *response = NULL;
|
|
const char *source_qube;
|
|
char preamble[256];
|
|
int i;
|
|
|
|
/* Parse bridge-specific args */
|
|
for (i = 0; i < argc; i++) {
|
|
if (strcmp(argv[i], "--to") == 0) {
|
|
if (i + 1 >= argc) {
|
|
fprintf(stderr, "bridge: --to requires a socket name\n");
|
|
return 1;
|
|
}
|
|
target_socket = argv[i + 1];
|
|
socket_name_explicit = 1;
|
|
i++;
|
|
} else if (strcmp(argv[i], "-h") == 0 || strcmp(argv[i], "--help") == 0) {
|
|
fprintf(stderr, "Usage: nsigner bridge [--to <socket-name>]\n");
|
|
return 0;
|
|
} else {
|
|
fprintf(stderr, "bridge: unknown argument: %s\n", argv[i]);
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
if (target_socket == NULL || target_socket[0] == '\0') {
|
|
target_socket = "nsigner";
|
|
}
|
|
|
|
if (!socket_name_explicit) {
|
|
if (discover_single_socket_name(discovered, sizeof(discovered)) == 0) {
|
|
target_socket = discovered;
|
|
}
|
|
}
|
|
|
|
/* Read the source qube from the qrexec environment */
|
|
source_qube = getenv("QREXEC_REMOTE_DOMAIN");
|
|
if (source_qube == NULL || source_qube[0] == '\0') {
|
|
/* Not running under qrexec — relay anyway but with no source tag.
|
|
* The persistent signer will identify the caller by uid only. */
|
|
source_qube = "";
|
|
}
|
|
|
|
/* Connect to the persistent signer's abstract unix socket */
|
|
fd = connect_abstract_socket(target_socket);
|
|
if (fd < 0) {
|
|
fprintf(stderr, "bridge: cannot connect to @%s: %s\n", target_socket, strerror(errno));
|
|
return 1;
|
|
}
|
|
|
|
/* Send the source-qube preamble (framed JSON) */
|
|
{
|
|
int plen;
|
|
plen = snprintf(preamble, sizeof(preamble),
|
|
"{\"qrexec_source\":\"%s\"}", source_qube);
|
|
if (plen < 0 || (size_t)plen >= sizeof(preamble)) {
|
|
fprintf(stderr, "bridge: source qube name too long\n");
|
|
close(fd);
|
|
return 1;
|
|
}
|
|
if (transport_send_framed(fd, preamble) != 0) {
|
|
fprintf(stderr, "bridge: failed to send preamble: %s\n", strerror(errno));
|
|
close(fd);
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
/* Read one framed request from stdin (qrexec) and forward to socket */
|
|
if (transport_recv_framed(STDIN_FILENO, &request, SERVER_MAX_MSG_SIZE) != 0) {
|
|
fprintf(stderr, "bridge: failed to read request from stdin: %s\n", strerror(errno));
|
|
close(fd);
|
|
return 1;
|
|
}
|
|
|
|
if (transport_send_framed(fd, request) != 0) {
|
|
fprintf(stderr, "bridge: failed to forward request: %s\n", strerror(errno));
|
|
free(request);
|
|
close(fd);
|
|
return 1;
|
|
}
|
|
|
|
free(request);
|
|
|
|
/* Read one framed response from socket and relay to stdout (qrexec) */
|
|
if (transport_recv_framed(fd, &response, SERVER_MAX_MSG_SIZE) != 0) {
|
|
fprintf(stderr, "bridge: failed to read response from signer: %s\n", strerror(errno));
|
|
close(fd);
|
|
return 1;
|
|
}
|
|
|
|
if (transport_send_framed(STDOUT_FILENO, response) != 0) {
|
|
fprintf(stderr, "bridge: failed to relay response: %s\n", strerror(errno));
|
|
free(response);
|
|
close(fd);
|
|
return 1;
|
|
}
|
|
|
|
free(response);
|
|
close(fd);
|
|
return 0;
|
|
}
|
|
|
|
static void activity_log_cb(const char *message, void *user_data) {
|
|
int idx;
|
|
time_t now;
|
|
struct tm tm_now;
|
|
char ts[32];
|
|
|
|
(void)user_data;
|
|
if (message == NULL) {
|
|
return;
|
|
}
|
|
|
|
now = time(NULL);
|
|
if (localtime_r(&now, &tm_now) != NULL) {
|
|
(void)strftime(ts, sizeof(ts), "%Y-%m-%d %H:%M:%S", &tm_now);
|
|
} else {
|
|
strncpy(ts, "0000-00-00 00:00:00", sizeof(ts) - 1);
|
|
ts[sizeof(ts) - 1] = '\0';
|
|
}
|
|
|
|
idx = g_activity_log.count % ACTIVITY_LOG_CAP;
|
|
(void)snprintf(g_activity_log.lines[idx],
|
|
sizeof(g_activity_log.lines[idx]),
|
|
"%s %s",
|
|
ts,
|
|
message);
|
|
g_activity_log.count++;
|
|
}
|
|
|
|
static void tcp_activity_stdout_cb(const char *message, void *user_data) {
|
|
time_t now;
|
|
struct tm tm_now;
|
|
char ts[32];
|
|
|
|
(void)user_data;
|
|
if (message == NULL) {
|
|
return;
|
|
}
|
|
|
|
now = time(NULL);
|
|
if (localtime_r(&now, &tm_now) != NULL) {
|
|
(void)strftime(ts, sizeof(ts), "%Y-%m-%d %H:%M:%S", &tm_now);
|
|
} else {
|
|
strncpy(ts, "0000-00-00 00:00:00", sizeof(ts) - 1);
|
|
ts[sizeof(ts) - 1] = '\0';
|
|
}
|
|
|
|
printf("[%s] %s\n", ts, message);
|
|
fflush(stdout);
|
|
}
|
|
|
|
static void role_table_get_cell(int row, int col, char *out, size_t out_size, void *user_data) {
|
|
const role_table_view_data_t *view = (const role_table_view_data_t *)user_data;
|
|
const role_entry_t *r;
|
|
|
|
if (out == NULL || out_size == 0 || view == NULL || view->role_table == NULL ||
|
|
row < 0 || row >= view->role_table->count) {
|
|
return;
|
|
}
|
|
|
|
r = &view->role_table->entries[row];
|
|
switch (col) {
|
|
case 0:
|
|
(void)snprintf(out, out_size, "%s", r->name);
|
|
break;
|
|
case 1:
|
|
(void)snprintf(out, out_size, "%s", role_purpose_to_str(r->purpose));
|
|
break;
|
|
case 2:
|
|
(void)snprintf(out, out_size, "%s", role_curve_to_str(r->curve));
|
|
break;
|
|
case 3:
|
|
(void)snprintf(out, out_size, "%s", (r->selector_type == SELECTOR_NOSTR_INDEX) ? "nostr_index" : "role_path");
|
|
break;
|
|
default:
|
|
out[0] = '\0';
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void render_status(const role_table_t *role_table,
|
|
const mnemonic_state_t *mnemonic,
|
|
int derived_count,
|
|
const char *socket_name) {
|
|
TuiFrame frame = { "n_signer", NSIGNER_VERSION, "> Main Menu" };
|
|
TuiMenu menu = { g_main_menu_items, (int)(sizeof(g_main_menu_items) / sizeof(g_main_menu_items[0])) };
|
|
TuiSize size = tui_terminal_size();
|
|
int left_col = tui_menu_left_col(&frame, size.width);
|
|
char status_buf[256];
|
|
|
|
tui_clear_continuous(size.height);
|
|
tui_render_top_frame(&frame, size.width);
|
|
|
|
tui_print("^*Connections^:");
|
|
if (g_connection_info_count == 0) {
|
|
tui_print("(none)");
|
|
} else {
|
|
for (int i = 0; i < g_connection_info_count; ++i) {
|
|
tui_print("%s", g_connection_info[i]);
|
|
}
|
|
}
|
|
|
|
tui_print("");
|
|
tui_render_menu(&menu, left_col);
|
|
tui_print("");
|
|
|
|
(void)snprintf(status_buf,
|
|
sizeof(status_buf),
|
|
"session=%s (%d words) signer=%s derived=%d auto-approve=%s",
|
|
mnemonic_is_loaded(mnemonic) ? "unlocked" : "locked",
|
|
(mnemonic != NULL) ? mnemonic->word_count : 0,
|
|
(socket_name != NULL) ? socket_name : "(none)",
|
|
derived_count,
|
|
g_auto_approve ? "ON" : "OFF");
|
|
tui_print("%s", status_buf);
|
|
|
|
tui_print("^*Roles^:");
|
|
if (role_table == NULL || role_table->count == 0) {
|
|
tui_print("(none)");
|
|
} else {
|
|
static const TuiColumn columns[] = {
|
|
{"Role", 20, 0},
|
|
{"Purpose", 12, 0},
|
|
{"Curve", 12, 0},
|
|
{"Selector", 12, 0}
|
|
};
|
|
role_table_view_data_t view;
|
|
TuiTable table;
|
|
|
|
view.role_table = role_table;
|
|
table.columns = columns;
|
|
table.column_count = (int)(sizeof(columns) / sizeof(columns[0]));
|
|
table.row_count = role_table->count;
|
|
table.user_data = &view;
|
|
table.get_cell = role_table_get_cell;
|
|
table.is_default = NULL;
|
|
table.prefix_len = NULL;
|
|
tui_render_table(&table);
|
|
}
|
|
|
|
tui_print("");
|
|
tui_print("^*Activity (latest first)^:");
|
|
if (g_activity_log.count == 0) {
|
|
tui_print("(none)");
|
|
} else {
|
|
int i;
|
|
int shown = 0;
|
|
for (i = g_activity_log.count - 1; i >= 0 && shown < ACTIVITY_LOG_CAP; --i, ++shown) {
|
|
tui_print("%s", g_activity_log.lines[i % ACTIVITY_LOG_CAP]);
|
|
}
|
|
}
|
|
|
|
tui_anchor_prompt(0, left_col);
|
|
fflush(stdout);
|
|
}
|
|
|
|
static int tui_approval_cb(const server_approval_request_t *req, void *user_data) {
|
|
main_tui_context_t *ctx = (main_tui_context_t *)user_data;
|
|
TuiFrame frame = { "n_signer", NSIGNER_VERSION, "> Approval" };
|
|
char choice[32];
|
|
int decision = POLICY_DENY;
|
|
|
|
tui_render_content_screen(&frame, "Approval required");
|
|
tui_print("caller: %s", (req != NULL && req->caller != NULL) ? req->caller->caller_id : "unknown");
|
|
if (req != NULL && req->fips_peer_npub != NULL) {
|
|
if (req->fips_peer_name != NULL && req->fips_peer_name[0] != '\0') {
|
|
tui_print("fips peer: %s (%s)", req->fips_peer_npub, req->fips_peer_name);
|
|
} else {
|
|
tui_print("fips peer: %s", req->fips_peer_npub);
|
|
}
|
|
}
|
|
tui_print("method: %s", (req != NULL && req->method != NULL) ? req->method : "unknown");
|
|
tui_print("role: %s", (req != NULL && req->role_name != NULL) ? req->role_name : "unknown");
|
|
tui_print("purpose: %s", (req != NULL && req->purpose != NULL) ? req->purpose : "unknown");
|
|
if (req != NULL && req->pending_derivation) {
|
|
tui_print("** NEW IDENTITY — will be derived if approved **");
|
|
}
|
|
tui_print("");
|
|
tui_print("^_y^: allow once");
|
|
tui_print("^_n^: deny");
|
|
tui_print("^_e^: allow this caller+role+verb for session");
|
|
tui_print("^_a^: allow this caller+role for session (all verbs)");
|
|
printf("> ");
|
|
fflush(stdout);
|
|
|
|
if (read_line_stdin(choice, sizeof(choice)) == 0) {
|
|
char ch = (char)tolower((unsigned char)choice[0]);
|
|
if (ch == 'a') {
|
|
decision = POLICY_ALLOW_SESSION_ALL;
|
|
} else if (ch == 'e') {
|
|
decision = POLICY_ALLOW_SESSION_VERB;
|
|
} else if (ch == 'y') {
|
|
decision = POLICY_ALLOW;
|
|
}
|
|
}
|
|
|
|
if (ctx != NULL) {
|
|
render_status(ctx->role_table,
|
|
ctx->mnemonic,
|
|
(ctx->derived_count != NULL) ? *ctx->derived_count : 0,
|
|
ctx->socket_name);
|
|
}
|
|
|
|
return decision;
|
|
}
|
|
|
|
static int setup_default_role(role_table_t *role_table) {
|
|
role_entry_t role;
|
|
|
|
if (role_table == NULL) {
|
|
return -1;
|
|
}
|
|
|
|
memset(&role, 0, sizeof(role));
|
|
strncpy(role.name, "main", sizeof(role.name) - 1);
|
|
strncpy(role.purpose_str, "nostr", sizeof(role.purpose_str) - 1);
|
|
strncpy(role.curve_str, "secp256k1", sizeof(role.curve_str) - 1);
|
|
role.purpose = role_purpose_from_str(role.purpose_str);
|
|
role.curve = role_curve_from_str(role.curve_str);
|
|
role.selector_type = SELECTOR_NOSTR_INDEX;
|
|
role.nostr_index = 0;
|
|
role.derived = 0;
|
|
|
|
return role_table_add(role_table, &role);
|
|
}
|
|
|
|
static int prompt_load_mnemonic_tui(mnemonic_state_t *mnemonic) {
|
|
char phrase[MNEMONIC_MAX_LEN];
|
|
char phrase_copy[MNEMONIC_MAX_LEN];
|
|
char mode[MNEMONIC_MAX_LEN];
|
|
int invalid_attempts = 0;
|
|
const int max_invalid_attempts = 10;
|
|
|
|
if (mnemonic == NULL) {
|
|
return -1;
|
|
}
|
|
|
|
while (invalid_attempts < max_invalid_attempts) {
|
|
{
|
|
TuiFrame frame = { "n_signer", NSIGNER_VERSION, "> Unlock" };
|
|
tui_render_content_screen(&frame, "Load mnemonic");
|
|
tui_print("Mnemonic source: [E]nter existing or [G]enerate new");
|
|
tui_print("Default is E; you can also paste full mnemonic here.");
|
|
printf("> ");
|
|
fflush(stdout);
|
|
}
|
|
if (read_line_stdin(mode, sizeof(mode)) != 0) {
|
|
fprintf(stderr, "Failed to read mnemonic source choice\n");
|
|
return -1;
|
|
}
|
|
|
|
if ((mode[0] == 'q' || mode[0] == 'Q' || mode[0] == 'x' || mode[0] == 'X') && mode[1] == '\0') {
|
|
fprintf(stderr, "User requested exit.\n");
|
|
return -1;
|
|
}
|
|
|
|
if (strchr(mode, ' ') != NULL && mode[0] != 'g' && mode[0] != 'G') {
|
|
if (mnemonic_load(mnemonic, mode) == 0) {
|
|
printf("Seed phrase is valid and accepted.\n");
|
|
return 0;
|
|
}
|
|
|
|
invalid_attempts++;
|
|
fprintf(stderr,
|
|
"Invalid mnemonic (must be 12/15/18/21/24 words). Attempts: %d/%d\n",
|
|
invalid_attempts,
|
|
max_invalid_attempts);
|
|
continue;
|
|
}
|
|
|
|
if (mode[0] == 'g' || mode[0] == 'G') {
|
|
int idx = 1;
|
|
char *ctx = NULL;
|
|
char *word;
|
|
|
|
if (mnemonic_generate(12, phrase, sizeof(phrase)) != 0) {
|
|
fprintf(stderr, "Failed to generate mnemonic\n");
|
|
return -1;
|
|
}
|
|
|
|
strncpy(phrase_copy, phrase, sizeof(phrase_copy) - 1);
|
|
phrase_copy[sizeof(phrase_copy) - 1] = '\0';
|
|
|
|
tui_print("");
|
|
tui_print("Generated mnemonic (WRITE THIS DOWN - it will not be shown again):");
|
|
word = strtok_r(phrase_copy, " ", &ctx);
|
|
while (word != NULL) {
|
|
printf("%2d. %s\n", idx, word);
|
|
idx++;
|
|
word = strtok_r(NULL, " ", &ctx);
|
|
}
|
|
tui_print("");
|
|
tui_print("Press Enter after writing down your mnemonic to continue.");
|
|
printf("> ");
|
|
fflush(stdout);
|
|
if (read_line_stdin(mode, sizeof(mode)) != 0) {
|
|
fprintf(stderr, "Failed to read continue input\n");
|
|
memset(phrase, 0, sizeof(phrase));
|
|
memset(phrase_copy, 0, sizeof(phrase_copy));
|
|
return -1;
|
|
}
|
|
|
|
if (mnemonic_load(mnemonic, phrase) != 0) {
|
|
memset(phrase, 0, sizeof(phrase));
|
|
memset(phrase_copy, 0, sizeof(phrase_copy));
|
|
fprintf(stderr, "Failed to load generated mnemonic\n");
|
|
return -1;
|
|
}
|
|
|
|
printf("Seed phrase is valid and accepted.\n");
|
|
memset(phrase, 0, sizeof(phrase));
|
|
memset(phrase_copy, 0, sizeof(phrase_copy));
|
|
return 0;
|
|
}
|
|
|
|
{
|
|
TuiFrame frame = { "n_signer", NSIGNER_VERSION, "> Unlock" };
|
|
tui_render_content_screen(&frame, "Enter mnemonic");
|
|
tui_print("Enter mnemonic (12/15/18/21/24 words):");
|
|
printf("> ");
|
|
fflush(stdout);
|
|
}
|
|
|
|
if (read_line_stdin(phrase, sizeof(phrase)) != 0) {
|
|
fprintf(stderr, "Failed to read mnemonic\n");
|
|
return -1;
|
|
}
|
|
|
|
if ((phrase[0] == 'q' || phrase[0] == 'Q' || phrase[0] == 'x' || phrase[0] == 'X') && phrase[1] == '\0') {
|
|
memset(phrase, 0, sizeof(phrase));
|
|
fprintf(stderr, "User requested exit.\n");
|
|
return -1;
|
|
}
|
|
|
|
if (mnemonic_load(mnemonic, phrase) == 0) {
|
|
printf("Seed phrase is valid and accepted.\n");
|
|
memset(phrase, 0, sizeof(phrase));
|
|
return 0;
|
|
}
|
|
|
|
memset(phrase, 0, sizeof(phrase));
|
|
invalid_attempts++;
|
|
fprintf(stderr,
|
|
"Invalid mnemonic (must be 12/15/18/21/24 words). Attempts: %d/%d\n",
|
|
invalid_attempts,
|
|
max_invalid_attempts);
|
|
}
|
|
|
|
fprintf(stderr, "Too many invalid mnemonic attempts (%d). Exiting.\n", max_invalid_attempts);
|
|
return -1;
|
|
}
|
|
|
|
static int read_mnemonic_from_fd(int fd, char *out, size_t out_sz) {
|
|
size_t len = 0;
|
|
int saw_newline = 0;
|
|
|
|
if (fd < 0 || out == NULL || out_sz < 2) {
|
|
return -1;
|
|
}
|
|
|
|
for (;;) {
|
|
unsigned char ch;
|
|
ssize_t n = read(fd, &ch, 1);
|
|
if (n == 0) {
|
|
break;
|
|
}
|
|
if (n < 0) {
|
|
if (errno == EINTR) {
|
|
continue;
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
if (ch == '\n') {
|
|
saw_newline = 1;
|
|
break;
|
|
}
|
|
if (ch == '\0') {
|
|
return -2;
|
|
}
|
|
if (len + 1 >= out_sz) {
|
|
return -3;
|
|
}
|
|
|
|
out[len++] = (char)ch;
|
|
}
|
|
|
|
out[len] = '\0';
|
|
|
|
if (len > 0 && out[len - 1] == '\r') {
|
|
out[len - 1] = '\0';
|
|
}
|
|
|
|
(void)saw_newline;
|
|
return 0;
|
|
}
|
|
|
|
static int replace_stdin_with_devnull(void) {
|
|
int null_fd = open("/dev/null", O_RDONLY);
|
|
int rc = 0;
|
|
|
|
if (null_fd < 0) {
|
|
return -1;
|
|
}
|
|
|
|
if (dup2(null_fd, STDIN_FILENO) < 0) {
|
|
rc = -1;
|
|
}
|
|
|
|
close(null_fd);
|
|
return rc;
|
|
}
|
|
|
|
static int load_mnemonic(mnemonic_state_t *mnemonic, const mnemonic_source_t *source) {
|
|
char phrase[MNEMONIC_MAX_LEN];
|
|
int rc = -1;
|
|
|
|
if (mnemonic == NULL || source == NULL) {
|
|
return -1;
|
|
}
|
|
|
|
if (source->kind == MNEMONIC_SOURCE_TUI) {
|
|
return prompt_load_mnemonic_tui(mnemonic);
|
|
}
|
|
|
|
memset(phrase, 0, sizeof(phrase));
|
|
rc = read_mnemonic_from_fd(source->fd, phrase, sizeof(phrase));
|
|
if (rc != 0) {
|
|
if (rc == -2) {
|
|
fprintf(stderr, "nsigner: mnemonic input contains embedded NUL byte\n");
|
|
} else if (rc == -3) {
|
|
fprintf(stderr, "nsigner: mnemonic input exceeded maximum length\n");
|
|
} else {
|
|
fprintf(stderr, "nsigner: failed to read mnemonic from fd %d: %s\n", source->fd, strerror(errno));
|
|
}
|
|
if (source->fd >= 0) {
|
|
close(source->fd);
|
|
}
|
|
secure_memzero(phrase, sizeof(phrase));
|
|
return -1;
|
|
}
|
|
|
|
rc = mnemonic_load(mnemonic, phrase);
|
|
secure_memzero(phrase, sizeof(phrase));
|
|
if (source->fd >= 0) {
|
|
close(source->fd);
|
|
}
|
|
if (rc != 0) {
|
|
fprintf(stderr, "nsigner: mnemonic validation failed\n");
|
|
return -1;
|
|
}
|
|
|
|
if (source->kind == MNEMONIC_SOURCE_STDIN || source->fd == STDIN_FILENO) {
|
|
if (replace_stdin_with_devnull() != 0) {
|
|
fprintf(stderr, "nsigner: failed to rebind stdin to /dev/null: %s\n", strerror(errno));
|
|
mnemonic_unload(mnemonic);
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
printf("Seed phrase is valid and accepted.\n");
|
|
return 0;
|
|
}
|
|
|
|
static void apply_test_overrides(policy_table_t *policy) {
|
|
const char *force_prompt;
|
|
const char *noninteractive_prompt;
|
|
const char *hotkeys;
|
|
|
|
if (policy == NULL) {
|
|
return;
|
|
}
|
|
|
|
force_prompt = getenv("NSIGNER_TEST_FORCE_PROMPT");
|
|
if (force_prompt != NULL && strcmp(force_prompt, "1") == 0) {
|
|
policy_entry_t e;
|
|
uid_t uid = getuid();
|
|
|
|
memset(&e, 0, sizeof(e));
|
|
(void)snprintf(e.caller, sizeof(e.caller), "uid:%u", (unsigned int)uid);
|
|
e.prompt = PROMPT_EVERY_REQUEST;
|
|
(void)policy_table_add(policy, &e);
|
|
}
|
|
|
|
noninteractive_prompt = getenv("NSIGNER_TEST_NONINTERACTIVE_PROMPT");
|
|
if (noninteractive_prompt != NULL) {
|
|
if (strcasecmp(noninteractive_prompt, "allow") == 0) {
|
|
server_set_noninteractive_prompt_default(POLICY_ALLOW);
|
|
} else if (strcasecmp(noninteractive_prompt, "deny") == 0) {
|
|
server_set_noninteractive_prompt_default(POLICY_DENY);
|
|
}
|
|
}
|
|
|
|
hotkeys = getenv("NSIGNER_TEST_HOTKEYS");
|
|
if (hotkeys != NULL) {
|
|
const char *p = hotkeys;
|
|
while (*p != '\0') {
|
|
char ch = *p;
|
|
if (ch == 'A') {
|
|
g_auto_approve = g_auto_approve ? 0 : 1;
|
|
server_set_prompt_always_allow(g_auto_approve);
|
|
}
|
|
p++;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Transport selection bitmask for interactive menu */
|
|
#define TRANSPORT_UNIX 0x01
|
|
#define TRANSPORT_QREXEC_BRIDGE 0x02
|
|
#define TRANSPORT_TCP 0x04
|
|
#define TRANSPORT_QREXEC_ONESHOT 0x08
|
|
|
|
/*
|
|
* Interactive transport selection menu.
|
|
* Shown after mnemonic entry when no --listen flag was given and stdin is a TTY.
|
|
* Returns a bitmask of selected transports, or 0 on error/no selection.
|
|
*/
|
|
static int prompt_transport_selection(void) {
|
|
int selected = TRANSPORT_UNIX; /* default: local unix socket */
|
|
char input[32];
|
|
|
|
for (;;) {
|
|
tui_render_content_screen(NULL, "Transport — how should other programs reach this signer?");
|
|
printf("Select one or more (type a number to toggle, 'a' for all, Enter to confirm):\n\n");
|
|
printf(" [%s] 1. Local Unix socket (same machine/qube)\n",
|
|
(selected & TRANSPORT_UNIX) ? "x" : " ");
|
|
printf(" [%s] 2. Qubes qrexec bridge (other qubes via qrexec, no network)\n",
|
|
(selected & TRANSPORT_QREXEC_BRIDGE) ? "x" : " ");
|
|
printf(" [%s] 3. TCP listener (FIPS mesh or local network)\n",
|
|
(selected & TRANSPORT_TCP) ? "x" : " ");
|
|
printf("\n [a] select all Enter = confirm\n");
|
|
printf("> ");
|
|
fflush(stdout);
|
|
|
|
if (read_line_stdin(input, sizeof(input)) != 0) {
|
|
return 0;
|
|
}
|
|
|
|
/* Trim trailing whitespace */
|
|
{
|
|
size_t len = strlen(input);
|
|
while (len > 0 && (input[len-1] == '\n' || input[len-1] == '\r' ||
|
|
input[len-1] == ' ' || input[len-1] == '\t')) {
|
|
input[--len] = '\0';
|
|
}
|
|
}
|
|
|
|
if (input[0] == '\0') {
|
|
/* Enter pressed — confirm current selection */
|
|
if (selected == 0) {
|
|
printf("At least one transport must be selected.\n");
|
|
continue;
|
|
}
|
|
break;
|
|
}
|
|
|
|
if (input[0] == 'a' || input[0] == 'A') {
|
|
selected = TRANSPORT_UNIX | TRANSPORT_QREXEC_BRIDGE | TRANSPORT_TCP;
|
|
continue;
|
|
}
|
|
|
|
if (input[0] == '1') {
|
|
selected ^= TRANSPORT_UNIX;
|
|
} else if (input[0] == '2') {
|
|
selected ^= TRANSPORT_QREXEC_BRIDGE;
|
|
} else if (input[0] == '3') {
|
|
selected ^= TRANSPORT_TCP;
|
|
} else {
|
|
printf("Invalid input. Type 1-3, 'a', or Enter to confirm.\n");
|
|
}
|
|
}
|
|
|
|
return selected;
|
|
}
|
|
|
|
/*
|
|
* Interactive index whitelist prompt.
|
|
* Shown after transport selection when no --allow-index flag was given.
|
|
* Returns a malloc'd spec string (caller must free), or NULL for "all".
|
|
*/
|
|
static char *prompt_index_whitelist(void) {
|
|
char input[256];
|
|
|
|
for (;;) {
|
|
tui_render_content_screen(NULL, "Index whitelist — restrict which nostr_index values this session can access");
|
|
printf("Enter allowed indices, or press Enter for 'all' (no restriction):\n\n");
|
|
printf(" Examples:\n");
|
|
printf(" all (default — allow all indices)\n");
|
|
printf(" 0 (only index 0)\n");
|
|
printf(" 0,1,3 (specific indices)\n");
|
|
printf(" 0-3 (range 0 through 3)\n");
|
|
printf(" 0,2-3,7 (mixed list and ranges)\n");
|
|
printf("\n Enter = all\n");
|
|
printf("> ");
|
|
fflush(stdout);
|
|
|
|
if (read_line_stdin(input, sizeof(input)) != 0) {
|
|
return NULL;
|
|
}
|
|
|
|
/* Trim trailing whitespace */
|
|
{
|
|
size_t len = strlen(input);
|
|
while (len > 0 && (input[len-1] == '\n' || input[len-1] == '\r' ||
|
|
input[len-1] == ' ' || input[len-1] == '\t')) {
|
|
input[--len] = '\0';
|
|
}
|
|
}
|
|
|
|
if (input[0] == '\0') {
|
|
/* Enter pressed — default to "all" */
|
|
return NULL;
|
|
}
|
|
|
|
/* Validate by parsing into a temp whitelist */
|
|
{
|
|
server_ctx_t tmp;
|
|
memset(&tmp, 0, sizeof(tmp));
|
|
if (server_set_index_whitelist(&tmp, input) != 0) {
|
|
printf("Invalid spec: '%s'. Try again or press Enter for 'all'.\n", input);
|
|
continue;
|
|
}
|
|
}
|
|
|
|
return strdup(input);
|
|
}
|
|
}
|
|
|
|
int main(int argc, char *argv[]) {
|
|
mnemonic_state_t mnemonic;
|
|
role_table_t role_table;
|
|
dispatcher_ctx_t dispatcher;
|
|
policy_table_t policy;
|
|
server_ctx_t server;
|
|
key_store_t key_store;
|
|
static algorithm_key_cache_t alg_key_cache;
|
|
struct pollfd pfds[3]; /* max: 2 listeners (unix+tcp) + stdin */
|
|
uid_t owner_uid;
|
|
int derived_count;
|
|
const char *socket_name = NSIGNER_DEFAULT_SOCKET_NAME;
|
|
char generated_socket_name[SERVER_SOCKET_NAME_MAX];
|
|
int socket_name_explicit = 0;
|
|
int listen_mode = NSIGNER_LISTEN_UNIX;
|
|
int listen_mode_explicit = 0;
|
|
const char *listen_target = NSIGNER_DEFAULT_SOCKET_NAME;
|
|
int argi = 1;
|
|
const char *preapprove_specs[POLICY_MAX_ENTRIES];
|
|
int preapprove_count = 0;
|
|
int auth_mode = NSIGNER_AUTH_OFF;
|
|
int auth_skew_seconds = AUTH_DEFAULT_SKEW_SECONDS;
|
|
int allow_all = 0;
|
|
int bridge_source_trusted = 0;
|
|
const char *allow_index_spec = NULL;
|
|
mnemonic_source_t mnemonic_source = { MNEMONIC_SOURCE_TUI, -1 };
|
|
|
|
while (argi < argc) {
|
|
if (strcmp(argv[argi], "--socket-name") == 0 ||
|
|
strcmp(argv[argi], "--name") == 0 ||
|
|
strcmp(argv[argi], "-n") == 0) {
|
|
if (argi + 1 >= argc) {
|
|
fprintf(stderr, "Missing value for %s\n", argv[argi]);
|
|
return 1;
|
|
}
|
|
socket_name = argv[argi + 1];
|
|
socket_name_explicit = 1;
|
|
argi += 2;
|
|
continue;
|
|
}
|
|
if (strcmp(argv[argi], "--listen") == 0 || strcmp(argv[argi], "-l") == 0) {
|
|
if (argi + 1 >= argc) {
|
|
fprintf(stderr, "Missing value for %s\n", argv[argi]);
|
|
return 1;
|
|
}
|
|
listen_mode_explicit = 1;
|
|
if (strcmp(argv[argi + 1], "unix") == 0) {
|
|
listen_mode = NSIGNER_LISTEN_UNIX;
|
|
} else if (strcmp(argv[argi + 1], "stdio") == 0) {
|
|
listen_mode = NSIGNER_LISTEN_STDIO;
|
|
} else if (strcmp(argv[argi + 1], "qrexec") == 0) {
|
|
listen_mode = NSIGNER_LISTEN_QREXEC;
|
|
} else if (strncmp(argv[argi + 1], "tcp:", 4) == 0) {
|
|
listen_mode = NSIGNER_LISTEN_TCP;
|
|
listen_target = argv[argi + 1];
|
|
} else {
|
|
fprintf(stderr, "Invalid --listen mode: %s (expected unix|stdio|qrexec|tcp:HOST:PORT)\n", argv[argi + 1]);
|
|
return 1;
|
|
}
|
|
argi += 2;
|
|
continue;
|
|
}
|
|
if (strcmp(argv[argi], "--auth") == 0 || strcmp(argv[argi], "-a") == 0) {
|
|
if (argi + 1 >= argc) {
|
|
fprintf(stderr, "Missing value for %s\n", argv[argi]);
|
|
return 1;
|
|
}
|
|
if (strcmp(argv[argi + 1], "off") == 0) {
|
|
auth_mode = NSIGNER_AUTH_OFF;
|
|
} else if (strcmp(argv[argi + 1], "optional") == 0) {
|
|
auth_mode = NSIGNER_AUTH_OPTIONAL;
|
|
} else if (strcmp(argv[argi + 1], "required") == 0) {
|
|
auth_mode = NSIGNER_AUTH_REQUIRED;
|
|
} else {
|
|
fprintf(stderr, "Invalid --auth mode: %s (expected off|optional|required)\n", argv[argi + 1]);
|
|
return 1;
|
|
}
|
|
argi += 2;
|
|
continue;
|
|
}
|
|
if (strcmp(argv[argi], "--preapprove") == 0 || strcmp(argv[argi], "-p") == 0) {
|
|
if (argi + 1 >= argc) {
|
|
fprintf(stderr, "Missing value for %s\n", argv[argi]);
|
|
return 1;
|
|
}
|
|
if (preapprove_count >= POLICY_MAX_ENTRIES) {
|
|
fprintf(stderr, "Too many --preapprove entries (max %d)\n", POLICY_MAX_ENTRIES);
|
|
return 1;
|
|
}
|
|
preapprove_specs[preapprove_count++] = argv[argi + 1];
|
|
argi += 2;
|
|
continue;
|
|
}
|
|
if (strcmp(argv[argi], "--mnemonic-stdin") == 0) {
|
|
if (mnemonic_source.kind != MNEMONIC_SOURCE_TUI) {
|
|
fprintf(stderr, "nsigner: --mnemonic-stdin and --mnemonic-fd are mutually exclusive\n");
|
|
return 1;
|
|
}
|
|
mnemonic_source.kind = MNEMONIC_SOURCE_STDIN;
|
|
mnemonic_source.fd = STDIN_FILENO;
|
|
argi += 1;
|
|
continue;
|
|
}
|
|
if (strcmp(argv[argi], "--mnemonic-fd") == 0) {
|
|
char *endp = NULL;
|
|
long parsed_fd;
|
|
if (argi + 1 >= argc) {
|
|
fprintf(stderr, "Missing value for %s\n", argv[argi]);
|
|
return 1;
|
|
}
|
|
if (mnemonic_source.kind != MNEMONIC_SOURCE_TUI) {
|
|
fprintf(stderr, "nsigner: --mnemonic-stdin and --mnemonic-fd are mutually exclusive\n");
|
|
return 1;
|
|
}
|
|
errno = 0;
|
|
parsed_fd = strtol(argv[argi + 1], &endp, 10);
|
|
if (errno != 0 || endp == argv[argi + 1] || *endp != '\0' || parsed_fd < 0 || parsed_fd > INT_MAX) {
|
|
fprintf(stderr, "nsigner: --mnemonic-fd %s: invalid FD value\n", argv[argi + 1]);
|
|
return 1;
|
|
}
|
|
mnemonic_source.kind = MNEMONIC_SOURCE_FD;
|
|
mnemonic_source.fd = (int)parsed_fd;
|
|
argi += 2;
|
|
continue;
|
|
}
|
|
if (strcmp(argv[argi], "--allow-all") == 0 || strcmp(argv[argi], "-A") == 0) {
|
|
allow_all = 1;
|
|
argi += 1;
|
|
continue;
|
|
}
|
|
if (strcmp(argv[argi], "--bridge-source-trusted") == 0) {
|
|
bridge_source_trusted = 1;
|
|
argi += 1;
|
|
continue;
|
|
}
|
|
if (strcmp(argv[argi], "--allow-index") == 0) {
|
|
if (argi + 1 >= argc) {
|
|
fprintf(stderr, "Missing value for %s\n", argv[argi]);
|
|
return 1;
|
|
}
|
|
allow_index_spec = argv[argi + 1];
|
|
argi += 2;
|
|
continue;
|
|
}
|
|
break;
|
|
}
|
|
|
|
if (argi < argc && strcmp(argv[argi], "client") == 0) {
|
|
if (listen_mode != NSIGNER_LISTEN_UNIX) {
|
|
fprintf(stderr, "--listen is server-only; client mode uses unix abstract sockets\n");
|
|
return 1;
|
|
}
|
|
return client_main(argc - argi - 1, argv + argi + 1, socket_name, socket_name_explicit);
|
|
}
|
|
|
|
if (argi < argc && strcmp(argv[argi], "bridge") == 0) {
|
|
/* bridge: stateless qrexec → unix-socket relay (no mnemonic, no listen) */
|
|
return bridge_main(argc - argi - 1, argv + argi + 1, socket_name, socket_name_explicit);
|
|
}
|
|
|
|
if (argi < argc && strcmp(argv[argi], "list") == 0) {
|
|
if (listen_mode != NSIGNER_LISTEN_UNIX) {
|
|
fprintf(stderr, "--listen is server-only; list inspects unix abstract sockets\n");
|
|
return 1;
|
|
}
|
|
return list_sockets_main();
|
|
}
|
|
|
|
if (argi < argc && (strcmp(argv[argi], "--version") == 0 || strcmp(argv[argi], "-v") == 0)) {
|
|
printf("nsigner %s\n", NSIGNER_VERSION);
|
|
return 0;
|
|
}
|
|
|
|
if (argi < argc && (strcmp(argv[argi], "--help") == 0 || strcmp(argv[argi], "-h") == 0)) {
|
|
print_usage(argv[0]);
|
|
return 0;
|
|
}
|
|
|
|
if (argi < argc) {
|
|
fprintf(stderr, "Unknown argument: %s\n", argv[argi]);
|
|
print_usage(argv[0]);
|
|
return 1;
|
|
}
|
|
|
|
if (mnemonic_source.kind == MNEMONIC_SOURCE_STDIN &&
|
|
(listen_mode == NSIGNER_LISTEN_STDIO || listen_mode == NSIGNER_LISTEN_QREXEC)) {
|
|
fprintf(stderr, "nsigner: --mnemonic-stdin requires --listen unix or --listen tcp:...\n");
|
|
return 1;
|
|
}
|
|
if (mnemonic_source.kind == MNEMONIC_SOURCE_FD) {
|
|
if (mnemonic_source.fd == STDOUT_FILENO) {
|
|
fprintf(stderr, "nsigner: --mnemonic-fd 1 is not allowed\n");
|
|
return 1;
|
|
}
|
|
if (mnemonic_source.fd == STDIN_FILENO &&
|
|
(listen_mode == NSIGNER_LISTEN_STDIO || listen_mode == NSIGNER_LISTEN_QREXEC)) {
|
|
fprintf(stderr, "nsigner: --mnemonic-fd 0 cannot be used with --listen stdio or --listen qrexec\n");
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
printf("nsigner %s\n", NSIGNER_VERSION);
|
|
fflush(stdout);
|
|
|
|
g_startup_mnemonic_source_kind = mnemonic_source.kind;
|
|
|
|
mnemonic_init(&mnemonic);
|
|
if (load_mnemonic(&mnemonic, &mnemonic_source) != 0) {
|
|
mnemonic_unload(&mnemonic);
|
|
return 1;
|
|
}
|
|
|
|
role_table_init(&role_table);
|
|
if (setup_default_role(&role_table) != 0) {
|
|
fprintf(stderr, "Failed to initialize default role\n");
|
|
mnemonic_unload(&mnemonic);
|
|
return 1;
|
|
}
|
|
|
|
memset(&key_store, 0, sizeof(key_store));
|
|
alg_key_cache_init(&alg_key_cache);
|
|
|
|
owner_uid = getuid();
|
|
policy_init_default(&policy, owner_uid);
|
|
|
|
for (int i = 0; i < preapprove_count; ++i) {
|
|
policy_entry_t entry;
|
|
int parsed_nostr_index = -1;
|
|
|
|
if (parse_preapprove_spec(preapprove_specs[i], &entry, &parsed_nostr_index) != 0) {
|
|
mnemonic_unload(&mnemonic);
|
|
return 1;
|
|
}
|
|
|
|
entry.source = POLICY_SOURCE_PREAPPROVE;
|
|
|
|
/* Role-based entries: register the nostr_index role if needed.
|
|
* Algorithm-based entries (alg_count > 0) don't need a role. */
|
|
if (entry.alg_count == 0 && parsed_nostr_index >= 0 &&
|
|
role_table_find_by_nostr_index(&role_table, parsed_nostr_index) == NULL) {
|
|
if (role_table_register_nostr_index(&role_table, parsed_nostr_index) != 0) {
|
|
fprintf(stderr,
|
|
"ERROR: failed to register role for --preapprove nostr_index=%d\n",
|
|
parsed_nostr_index);
|
|
mnemonic_unload(&mnemonic);
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
if (policy_table_insert_before_last(&policy, &entry) != 0) {
|
|
fprintf(stderr, "ERROR: failed to insert --preapprove policy entry (table full): %s\n", preapprove_specs[i]);
|
|
mnemonic_unload(&mnemonic);
|
|
return 1;
|
|
}
|
|
|
|
if (entry.alg_count > 0) {
|
|
fprintf(stderr, "[PREAPPROVE] caller=%s algorithm=%s verbs=%d\n",
|
|
entry.caller, entry.algorithms[0], entry.verb_count);
|
|
} else {
|
|
fprintf(stderr, "[PREAPPROVE] caller=%s role=%s\n", entry.caller, entry.roles[0]);
|
|
}
|
|
}
|
|
|
|
apply_test_overrides(&policy);
|
|
if (allow_all) {
|
|
server_set_prompt_always_allow(1);
|
|
}
|
|
|
|
if (nostr_init() != 0) {
|
|
fprintf(stderr, "Failed to initialize crypto subsystem\n");
|
|
mnemonic_unload(&mnemonic);
|
|
return 1;
|
|
}
|
|
|
|
derived_count = crypto_derive_all(&key_store, &role_table, &mnemonic);
|
|
if (derived_count < 0) {
|
|
fprintf(stderr, "Failed to derive keys from mnemonic\n");
|
|
nostr_cleanup();
|
|
mnemonic_unload(&mnemonic);
|
|
return 1;
|
|
}
|
|
|
|
dispatcher_init(&dispatcher, &role_table, &mnemonic, &key_store, &alg_key_cache);
|
|
|
|
/*
|
|
* Interactive transport selection: if no --listen flag was given and
|
|
* stdin is a TTY, show the multi-select transport menu. This lets the
|
|
* user choose how other programs reach the signer without memorizing
|
|
* CLI flags. CLI flags skip the menu (backward compatible).
|
|
*/
|
|
int transport_mask = 0;
|
|
int multi_listen = 0; /* set when multiple persistent listeners are active */
|
|
server_ctx_t servers[2]; /* max: unix + tcp */
|
|
int server_count = 0;
|
|
int unix_server_idx = -1;
|
|
int tcp_server_idx = -1;
|
|
|
|
if (!listen_mode_explicit && isatty(STDIN_FILENO) &&
|
|
mnemonic_source.kind == MNEMONIC_SOURCE_TUI) {
|
|
transport_mask = prompt_transport_selection();
|
|
if (transport_mask == 0) {
|
|
fprintf(stderr, "No transport selected. Exiting.\n");
|
|
crypto_wipe(&key_store); alg_key_cache_wipe(&alg_key_cache);
|
|
nostr_cleanup();
|
|
mnemonic_unload(&mnemonic);
|
|
return 1;
|
|
}
|
|
|
|
/* Index whitelist prompt (only if --allow-index wasn't given on CLI) */
|
|
if (allow_index_spec == NULL) {
|
|
char *wl_spec = prompt_index_whitelist();
|
|
if (wl_spec != NULL) {
|
|
allow_index_spec = wl_spec; /* will be freed at program exit */
|
|
}
|
|
}
|
|
|
|
/* Persistent listeners — configure from menu selection */
|
|
multi_listen = 1;
|
|
|
|
/* Unix socket (with or without bridge-source-trusted) */
|
|
if (transport_mask & (TRANSPORT_UNIX | TRANSPORT_QREXEC_BRIDGE)) {
|
|
/* Use fixed name "nsigner" for scripted access */
|
|
socket_name = "nsigner";
|
|
socket_name_explicit = 1;
|
|
listen_mode = NSIGNER_LISTEN_UNIX;
|
|
listen_target = socket_name;
|
|
if (transport_mask & TRANSPORT_QREXEC_BRIDGE) {
|
|
bridge_source_trusted = 1;
|
|
}
|
|
}
|
|
|
|
/* TCP listener */
|
|
if (transport_mask & TRANSPORT_TCP) {
|
|
/* Will be started as a second listener */
|
|
}
|
|
}
|
|
|
|
if (listen_mode == NSIGNER_LISTEN_UNIX && !socket_name_explicit) {
|
|
if (socket_name_random(generated_socket_name, sizeof(generated_socket_name)) != 0) {
|
|
fprintf(stderr, "Failed to generate random socket name\n");
|
|
crypto_wipe(&key_store); alg_key_cache_wipe(&alg_key_cache);
|
|
nostr_cleanup();
|
|
mnemonic_unload(&mnemonic);
|
|
return 1;
|
|
}
|
|
socket_name = generated_socket_name;
|
|
}
|
|
|
|
if (listen_mode == NSIGNER_LISTEN_UNIX) {
|
|
listen_target = socket_name;
|
|
} else if (listen_mode == NSIGNER_LISTEN_TCP && socket_name_explicit) {
|
|
fprintf(stderr, "--socket-name is only valid with unix listen mode\n");
|
|
crypto_wipe(&key_store); alg_key_cache_wipe(&alg_key_cache);
|
|
nostr_cleanup();
|
|
mnemonic_unload(&mnemonic);
|
|
return 1;
|
|
}
|
|
|
|
if ((listen_mode == NSIGNER_LISTEN_UNIX || listen_mode == NSIGNER_LISTEN_STDIO) &&
|
|
auth_mode != NSIGNER_AUTH_OFF) {
|
|
fprintf(stderr, "--auth is currently supported only with --listen qrexec (optional/required) and tcp (required)\n");
|
|
crypto_wipe(&key_store); alg_key_cache_wipe(&alg_key_cache);
|
|
nostr_cleanup();
|
|
mnemonic_unload(&mnemonic);
|
|
return 1;
|
|
}
|
|
|
|
if (listen_mode == NSIGNER_LISTEN_TCP) {
|
|
auth_mode = NSIGNER_AUTH_REQUIRED;
|
|
}
|
|
|
|
server_init(&server,
|
|
listen_target,
|
|
socket_name_explicit,
|
|
listen_mode,
|
|
auth_mode,
|
|
auth_skew_seconds,
|
|
&dispatcher,
|
|
&policy);
|
|
if (bridge_source_trusted) {
|
|
server_set_bridge_source_trusted(&server, 1);
|
|
}
|
|
if (allow_index_spec != NULL) {
|
|
if (server_set_index_whitelist(&server, allow_index_spec) != 0) {
|
|
fprintf(stderr, "Invalid --allow-index spec: %s\n", allow_index_spec);
|
|
fprintf(stderr, "Expected: 'all', '1,3,4', '0-3', or '0-3,7,9'\n");
|
|
crypto_wipe(&key_store); alg_key_cache_wipe(&alg_key_cache);
|
|
nostr_cleanup();
|
|
mnemonic_unload(&mnemonic);
|
|
return 1;
|
|
}
|
|
}
|
|
if (server_start(&server) != 0) {
|
|
if (listen_mode == NSIGNER_LISTEN_UNIX) {
|
|
fprintf(stderr, "Failed to start server on @%s: %s\n", socket_name, server_last_error(&server));
|
|
} else if (listen_mode == NSIGNER_LISTEN_TCP) {
|
|
fprintf(stderr, "Failed to start server on %s: %s\n", listen_target, server_last_error(&server));
|
|
} else {
|
|
fprintf(stderr, "Failed to start server (%s): %s\n",
|
|
(listen_mode == NSIGNER_LISTEN_QREXEC) ? "qrexec" : "stdio",
|
|
server_last_error(&server));
|
|
}
|
|
crypto_wipe(&key_store); alg_key_cache_wipe(&alg_key_cache);
|
|
nostr_cleanup();
|
|
mnemonic_unload(&mnemonic);
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* Multi-listener: if interactive menu selected TCP in addition to unix,
|
|
* start a second server context for TCP. The primary server (unix) is
|
|
* already running. Both share the same dispatcher and policy.
|
|
*/
|
|
if (multi_listen && (transport_mask & TRANSPORT_TCP)) {
|
|
const char *tcp_target = "tcp:[::]:8080";
|
|
tcp_server_idx = server_count;
|
|
server_init(&servers[tcp_server_idx],
|
|
tcp_target,
|
|
0, /* socket_name_explicit = 0 for TCP */
|
|
NSIGNER_LISTEN_TCP,
|
|
NSIGNER_AUTH_REQUIRED,
|
|
auth_skew_seconds,
|
|
&dispatcher,
|
|
&policy);
|
|
if (allow_index_spec != NULL) {
|
|
server_set_index_whitelist(&servers[tcp_server_idx], allow_index_spec);
|
|
}
|
|
if (server_start(&servers[tcp_server_idx]) != 0) {
|
|
fprintf(stderr, "Failed to start TCP server on %s: %s\n",
|
|
tcp_target, server_last_error(&servers[tcp_server_idx]));
|
|
server_stop(&server);
|
|
crypto_wipe(&key_store); alg_key_cache_wipe(&alg_key_cache);
|
|
nostr_cleanup();
|
|
mnemonic_unload(&mnemonic);
|
|
return 1;
|
|
}
|
|
server_count++;
|
|
}
|
|
|
|
/* Copy the primary (unix) server into the array for unified polling */
|
|
if (multi_listen) {
|
|
unix_server_idx = server_count;
|
|
servers[unix_server_idx] = server; /* struct copy */
|
|
server_count++;
|
|
}
|
|
|
|
(void)signal(SIGINT, handle_signal);
|
|
(void)signal(SIGTERM, handle_signal);
|
|
/*
|
|
* Ignore SIGPIPE so that writing to a socket whose peer has closed returns
|
|
* EPIPE instead of killing the signer process. A long-running attended
|
|
* signer must survive clients that disconnect abruptly (e.g. the
|
|
* nostr_core_lib client reconnects per request, so it closes the previous
|
|
* connection; if the server happens to write while the peer is closing,
|
|
* SIGPIPE would otherwise terminate the whole signer).
|
|
*/
|
|
(void)signal(SIGPIPE, SIG_IGN);
|
|
|
|
{
|
|
char fips_ipv6[128];
|
|
char fips_npub[256];
|
|
char listen_port[16];
|
|
int have_fips_identity =
|
|
(lookup_local_fips_identity(fips_ipv6, sizeof(fips_ipv6), fips_npub, sizeof(fips_npub)) == 0);
|
|
|
|
connection_info_clear();
|
|
|
|
if (multi_listen) {
|
|
/* Multi-listener mode: show all active transports */
|
|
if (transport_mask & (TRANSPORT_UNIX | TRANSPORT_QREXEC_BRIDGE)) {
|
|
if (bridge_source_trusted) {
|
|
connection_info_add("listen: unix @%s (bridge-source-trusted)", socket_name);
|
|
} else {
|
|
connection_info_add("listen: unix @%s", socket_name);
|
|
}
|
|
connection_info_add("client: nsigner --socket-name %s client '<json>'", socket_name);
|
|
if (transport_mask & TRANSPORT_QREXEC_BRIDGE) {
|
|
connection_info_add("qrexec service: %s", NSIGNER_QREXEC_SERVICE_NAME);
|
|
connection_info_add("qrexec caller: qrexec-client-vm <target_qube> %s", NSIGNER_QREXEC_SERVICE_NAME);
|
|
printf("qrexec service: %s\n", NSIGNER_QREXEC_SERVICE_NAME);
|
|
}
|
|
printf("System is ready and waiting for connections on @%s.\n", socket_name);
|
|
}
|
|
if (transport_mask & TRANSPORT_TCP) {
|
|
connection_info_add("listen: tcp [::]:8080");
|
|
printf("System is ready and waiting for connections on tcp:[::]:8080.\n");
|
|
}
|
|
} else if (listen_mode == NSIGNER_LISTEN_UNIX) {
|
|
connection_info_add("listen: unix @%s", socket_name);
|
|
connection_info_add("client: nsigner --socket-name %s client '<json>'", socket_name);
|
|
if (bridge_source_trusted) {
|
|
connection_info_add("qrexec service: %s", NSIGNER_QREXEC_SERVICE_NAME);
|
|
connection_info_add("qrexec caller: qrexec-client-vm <target_qube> %s", NSIGNER_QREXEC_SERVICE_NAME);
|
|
printf("qrexec service: %s\n", NSIGNER_QREXEC_SERVICE_NAME);
|
|
}
|
|
printf("System is ready and waiting for connections on @%s.\n", socket_name);
|
|
} else if (listen_mode == NSIGNER_LISTEN_TCP) {
|
|
connection_info_add("listen: %s", listen_target);
|
|
printf("System is ready and waiting for connections on %s.\n", listen_target);
|
|
} else if (listen_mode == NSIGNER_LISTEN_QREXEC) {
|
|
connection_info_add("listen: qrexec");
|
|
printf("System is ready and waiting for a qrexec request.\n");
|
|
} else {
|
|
connection_info_add("listen: stdio");
|
|
printf("System is ready and waiting for a stdio request.\n");
|
|
}
|
|
|
|
if (have_fips_identity) {
|
|
connection_info_add("fips ipv6: %s", fips_ipv6);
|
|
connection_info_add("fips npub: %s", fips_npub);
|
|
printf("fips ipv6: %s\n", fips_ipv6);
|
|
printf("fips npub: %s\n", fips_npub);
|
|
|
|
if (listen_mode == NSIGNER_LISTEN_TCP &&
|
|
extract_listen_port(listen_target, listen_port, sizeof(listen_port)) == 0) {
|
|
connection_info_add("fips address: http://%s.fips:%s", fips_npub, listen_port);
|
|
printf("fips address: http://%s.fips:%s\n", fips_npub, listen_port);
|
|
}
|
|
}
|
|
}
|
|
fflush(stdout);
|
|
|
|
if (listen_mode == NSIGNER_LISTEN_STDIO || listen_mode == NSIGNER_LISTEN_QREXEC) {
|
|
int hrc = server_handle_one(&server, NULL, NULL);
|
|
server_stop(&server);
|
|
crypto_wipe(&key_store); alg_key_cache_wipe(&alg_key_cache);
|
|
nostr_cleanup();
|
|
mnemonic_unload(&mnemonic);
|
|
return (hrc < 0) ? 1 : 0;
|
|
}
|
|
|
|
if (listen_mode == NSIGNER_LISTEN_TCP) {
|
|
pfds[0].fd = server.listen_fd;
|
|
pfds[0].events = POLLIN;
|
|
|
|
while (g_running && server.running) {
|
|
int prc = poll(pfds, 1, 200);
|
|
if (prc < 0) {
|
|
if (errno == EINTR) {
|
|
continue;
|
|
}
|
|
break;
|
|
}
|
|
if (prc > 0 && (pfds[0].revents & POLLIN)) {
|
|
if (server_handle_one(&server, tcp_activity_stdout_cb, NULL) < 0) {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
server_stop(&server);
|
|
crypto_wipe(&key_store); alg_key_cache_wipe(&alg_key_cache);
|
|
nostr_cleanup();
|
|
mnemonic_unload(&mnemonic);
|
|
return 0;
|
|
}
|
|
|
|
memset(&g_activity_log, 0, sizeof(g_activity_log));
|
|
g_auto_approve = allow_all ? 1 : 0;
|
|
server_set_prompt_always_allow(g_auto_approve);
|
|
{
|
|
main_tui_context_t main_tui_ctx;
|
|
main_tui_ctx.role_table = &role_table;
|
|
main_tui_ctx.mnemonic = &mnemonic;
|
|
main_tui_ctx.derived_count = &derived_count;
|
|
main_tui_ctx.socket_name = socket_name;
|
|
server_set_approval_cb(tui_approval_cb, &main_tui_ctx);
|
|
tui_install_resize_handler();
|
|
render_status(&role_table, &mnemonic, derived_count, socket_name);
|
|
|
|
/* Set up poll fds: listener(s) + stdin */
|
|
int npfds = 0;
|
|
if (multi_listen) {
|
|
for (int si = 0; si < server_count; si++) {
|
|
pfds[npfds].fd = servers[si].listen_fd;
|
|
pfds[npfds].events = POLLIN;
|
|
npfds++;
|
|
}
|
|
} else {
|
|
pfds[npfds].fd = server.listen_fd;
|
|
pfds[npfds].events = POLLIN;
|
|
npfds++;
|
|
}
|
|
pfds[npfds].fd = STDIN_FILENO;
|
|
pfds[npfds].events = POLLIN;
|
|
npfds++;
|
|
int stdin_pfd_idx = npfds - 1;
|
|
|
|
while (g_running && server.running) {
|
|
int prc = poll(pfds, npfds, 200);
|
|
if (prc < 0) {
|
|
if (errno == EINTR) {
|
|
continue;
|
|
}
|
|
break;
|
|
}
|
|
|
|
if (tui_resize_pending()) {
|
|
render_status(&role_table, &mnemonic, derived_count, socket_name);
|
|
}
|
|
|
|
/* Check all listener fds for activity */
|
|
if (prc > 0) {
|
|
if (multi_listen) {
|
|
for (int si = 0; si < server_count; si++) {
|
|
if (pfds[si].revents & POLLIN) {
|
|
int hrc = server_handle_one(&servers[si], activity_log_cb, NULL);
|
|
if (hrc < 0) {
|
|
g_running = 0;
|
|
break;
|
|
}
|
|
render_status(&role_table, &mnemonic, derived_count, socket_name);
|
|
}
|
|
}
|
|
} else {
|
|
if (pfds[0].revents & POLLIN) {
|
|
int hrc = server_handle_one(&server, activity_log_cb, NULL);
|
|
if (hrc < 0) {
|
|
break;
|
|
}
|
|
render_status(&role_table, &mnemonic, derived_count, socket_name);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (prc > 0 && (pfds[stdin_pfd_idx].revents & POLLIN)) {
|
|
char ch = '\0';
|
|
if (read(STDIN_FILENO, &ch, 1) > 0) {
|
|
char lower = (char)tolower((unsigned char)ch);
|
|
if (lower == 'q' || lower == 'x') {
|
|
g_running = 0;
|
|
} else if (lower == 'r') {
|
|
render_status(&role_table, &mnemonic, derived_count, socket_name);
|
|
} else if (ch == 'A') {
|
|
g_auto_approve = g_auto_approve ? 0 : 1;
|
|
server_set_prompt_always_allow(g_auto_approve);
|
|
render_status(&role_table, &mnemonic, derived_count, socket_name);
|
|
} else if (lower == 'l') {
|
|
mnemonic_source_t relock_source;
|
|
|
|
printf("\n[lock] Session locked. Re-enter mnemonic to unlock.\n");
|
|
fflush(stdout);
|
|
crypto_wipe(&key_store); alg_key_cache_wipe(&alg_key_cache);
|
|
mnemonic_unload(&mnemonic);
|
|
|
|
relock_source.kind = MNEMONIC_SOURCE_TUI;
|
|
relock_source.fd = -1;
|
|
if (g_startup_mnemonic_source_kind != MNEMONIC_SOURCE_TUI) {
|
|
printf("[lock] Re-unlock uses terminal prompt in this session.\n");
|
|
fflush(stdout);
|
|
}
|
|
|
|
if (load_mnemonic(&mnemonic, &relock_source) != 0) {
|
|
g_running = 0;
|
|
} else {
|
|
derived_count = crypto_derive_all(&key_store, &role_table, &mnemonic);
|
|
if (derived_count < 0) {
|
|
g_running = 0;
|
|
}
|
|
}
|
|
render_status(&role_table, &mnemonic, derived_count, socket_name);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
server_set_approval_cb(NULL, NULL);
|
|
}
|
|
|
|
if (multi_listen) {
|
|
for (int si = 0; si < server_count; si++) {
|
|
server_stop(&servers[si]);
|
|
}
|
|
} else {
|
|
server_stop(&server);
|
|
}
|
|
crypto_wipe(&key_store); alg_key_cache_wipe(&alg_key_cache);
|
|
nostr_cleanup();
|
|
mnemonic_unload(&mnemonic);
|
|
printf("Shutdown. All secrets wiped.\n");
|
|
return 0;
|
|
}
|