Files
n_signer/tests/test_policy.c
Laan Tungir 268b33b6d3 first
2026-05-02 12:31:26 -04:00

128 lines
5.1 KiB
C

#include "../src/policy.h"
#include <stdio.h>
#include <string.h>
#include <unistd.h>
static int g_passes = 0;
static int g_total = 0;
static void check_condition(const char *name, int condition) {
g_total++;
if (condition) {
printf("PASS: %s\n", name);
g_passes++;
} else {
printf("FAIL: %s\n", name);
}
}
static void add_single_entry(policy_table_t *table,
const char *caller,
const char *verb,
const char *role,
const char *purpose,
prompt_mode_t prompt) {
policy_entry_t e;
memset(&e, 0, sizeof(e));
strncpy(e.caller, caller, sizeof(e.caller) - 1);
if (verb != NULL) {
strncpy(e.verbs[0], verb, sizeof(e.verbs[0]) - 1);
e.verb_count = 1;
}
if (role != NULL) {
strncpy(e.roles[0], role, sizeof(e.roles[0]) - 1);
e.role_count = 1;
}
if (purpose != NULL) {
strncpy(e.purposes[0], purpose, sizeof(e.purposes[0]) - 1);
e.purpose_count = 1;
}
e.prompt = prompt;
policy_table_add(table, &e);
}
int main(void) {
policy_table_t table;
int rc;
uid_t uid = getuid();
char same_uid[64];
char other_uid[64];
(void)snprintf(same_uid, sizeof(same_uid), "uid:%u", (unsigned int)uid);
(void)snprintf(other_uid, sizeof(other_uid), "uid:%u", (unsigned int)(uid + 1U));
policy_init_default(&table, uid);
rc = policy_check(&table, same_uid, "sign_event", "main", "nostr");
check_condition("policy_init_default allows same uid", rc == POLICY_ALLOW);
rc = policy_check(&table, other_uid, "sign_event", "main", "nostr");
check_condition("policy_init_default denies different uid", rc == POLICY_DENY);
/* Exact caller, verb, role, purpose + never => allow */
policy_table_init(&table);
add_single_entry(&table, "uid:1000", "sign_event", "main", "nostr", PROMPT_NEVER);
rc = policy_check(&table, "uid:1000", "sign_event", "main", "nostr");
check_condition("exact match returns POLICY_ALLOW", rc == POLICY_ALLOW);
/* Wildcard caller + deny => deny */
policy_table_init(&table);
add_single_entry(&table, "*", "sign_event", "main", "nostr", PROMPT_DENY);
rc = policy_check(&table, "uid:2000", "sign_event", "main", "nostr");
check_condition("wildcard caller with deny returns POLICY_DENY", rc == POLICY_DENY);
/* Caller no match => POLICY_NO_MATCH */
policy_table_init(&table);
add_single_entry(&table, "uid:1000", "sign_event", "main", "nostr", PROMPT_NEVER);
rc = policy_check(&table, "uid:9999", "sign_event", "main", "nostr");
check_condition("caller mismatch returns POLICY_NO_MATCH", rc == POLICY_NO_MATCH);
/* Verb not in list => no match */
policy_table_init(&table);
add_single_entry(&table, "uid:1000", "get_public_key", "main", "nostr", PROMPT_NEVER);
rc = policy_check(&table, "uid:1000", "sign_event", "main", "nostr");
check_condition("verb mismatch returns POLICY_NO_MATCH", rc == POLICY_NO_MATCH);
/* Role not in list => no match */
policy_table_init(&table);
add_single_entry(&table, "uid:1000", "sign_event", "throwaway", "nostr", PROMPT_NEVER);
rc = policy_check(&table, "uid:1000", "sign_event", "main", "nostr");
check_condition("role mismatch returns POLICY_NO_MATCH", rc == POLICY_NO_MATCH);
/* Purpose not in list => no match */
policy_table_init(&table);
add_single_entry(&table, "uid:1000", "sign_event", "main", "bitcoin", PROMPT_NEVER);
rc = policy_check(&table, "uid:1000", "sign_event", "main", "nostr");
check_condition("purpose mismatch returns POLICY_NO_MATCH", rc == POLICY_NO_MATCH);
/* Empty verbs list means all verbs */
policy_table_init(&table);
add_single_entry(&table, "uid:1000", NULL, "main", "nostr", PROMPT_NEVER);
rc = policy_check(&table, "uid:1000", "nip44_encrypt", "main", "nostr");
check_condition("empty verbs list matches any verb", rc == POLICY_ALLOW);
/* prompt=first_per_boot => POLICY_PROMPT */
policy_table_init(&table);
add_single_entry(&table, "uid:1000", "sign_event", "main", "nostr", PROMPT_FIRST_PER_BOOT);
rc = policy_check(&table, "uid:1000", "sign_event", "main", "nostr");
check_condition("first_per_boot returns POLICY_PROMPT", rc == POLICY_PROMPT);
/* prompt=every_request => POLICY_PROMPT */
policy_table_init(&table);
add_single_entry(&table, "uid:1000", "sign_event", "main", "nostr", PROMPT_EVERY_REQUEST);
rc = policy_check(&table, "uid:1000", "sign_event", "main", "nostr");
check_condition("every_request returns POLICY_PROMPT", rc == POLICY_PROMPT);
/* First matching entry wins */
policy_table_init(&table);
add_single_entry(&table, "uid:1000", "sign_event", "main", "nostr", PROMPT_DENY);
add_single_entry(&table, "uid:1000", "sign_event", "main", "nostr", PROMPT_NEVER);
rc = policy_check(&table, "uid:1000", "sign_event", "main", "nostr");
check_condition("first matching entry wins", rc == POLICY_DENY);
printf("%d/%d tests passed\n", g_passes, g_total);
return (g_passes == g_total) ? 0 : 1;
}