2 * Sub-authentication Daemon: Commands
4 * (c) 2017 Martin Mares <mj@ucw.cz>
16 static void set_string(struct client *c, struct json_node *n, const char *key, const char *val)
19 json_object_set(n, key, json_new_string(c->json, val));
22 static void set_uint(struct client *c, struct json_node *n, const char *key, uint val)
24 json_object_set(n, key, json_new_number(c->json, val));
27 static void NONRET cmd_error(struct client *c, const char *err, ...)
32 vsnprintf(msg, sizeof(msg), err, args);
33 set_string(c, c->reply, "error", msg);
34 trans_throw("adhoc", NULL, "Error caught");
38 static void cmd_ok(struct client *c)
40 set_string(c, c->reply, "error", "");
43 const char *get_string(struct json_node *n, const char *key)
45 struct json_node *s = json_object_get(n, key);
46 if (s && s->type == JSON_STRING)
52 bool get_uint(struct json_node *n, const char *key, uint *dest)
54 struct json_node *s = json_object_get(n, key);
55 if (s && s->type == JSON_NUMBER)
57 uint u = (uint) s->number;
58 if ((double) u == s->number)
68 struct json_node **get_array(struct json_node *n, const char *key)
70 struct json_node *s = json_object_get(n, key);
71 if (s && s->type == JSON_ARRAY)
77 struct json_node *get_object(struct json_node *n, const char *key)
79 struct json_node *s = json_object_get(n, key);
80 if (s && s->type == JSON_OBJECT)
86 static const char *cmd_need_string(struct client *c, const char *key)
88 const char *val = get_string(c->request, key);
90 cmd_error(c, "Missing %s", key);
94 static struct auth_zone *cmd_need_zone(struct client *c)
96 const char *name = cmd_need_string(c, "zone");
97 struct auth_zone *az = auth_find_zone(name);
99 cmd_error(c, "No such zone");
103 static bool cmd_is_admin(struct client *c)
105 return (c->uid == 0);
108 static void cmd_require_admin(struct client *c)
110 if (!cmd_is_admin(c))
111 cmd_error(c, "Permission denied");
114 static const char *cmd_need_target_login(struct client *c)
116 const char *l = get_string(c->request, "login");
119 cmd_require_admin(c);
124 struct passwd *pw = getpwuid(c->uid);
126 cmd_error(c, "You do not exist");
127 return json_strdup(c->json, pw->pw_name);
131 static struct auth_acct *cmd_need_target_acct(struct client *c)
133 const char *login = cmd_need_target_login(c);
134 struct auth_zone *az = cmd_need_zone(c);
136 struct auth_user *au = auth_find_user(login, 0);
137 struct auth_acct *aa = au ? auth_find_acct(au, az, 0) : NULL;
141 if (!az->auto_create_acct)
142 cmd_error(c, "No such account");
146 msg(L_INFO, "Automatically creating user: login=<%s>", login);
147 au = auth_find_user(login, 1);
149 msg(L_INFO, "Automatically creating account: login=<%s> zone=<%s>", login, az->name);
150 return auth_find_acct(au, az, 1);
153 static void cmd_nop(struct client *c)
158 static void cmd_create_acct(struct client *c)
160 cmd_require_admin(c);
162 const char *login = get_string(c->request, "login");
164 cmd_error(c, "Login required");
166 struct auth_zone *az = cmd_need_zone(c);
167 struct auth_user *au = auth_find_user(login, 1);
168 if (!auth_find_acct(au, az, 0))
170 msg(L_INFO, "Creating account: login=<%s> zone=<%s>", login, az->name);
171 auth_find_acct(au, az, 1);
178 static void cmd_delete_acct(struct client *c)
180 cmd_require_admin(c);
182 const char *login = get_string(c->request, "login");
184 cmd_error(c, "Login required");
185 const char *zone_name = get_string(c->request, "zone");
187 struct auth_user *au = auth_find_user(login, 0);
191 if (zone_name && !strcmp(zone_name, "*"))
193 msg(L_INFO, "Deleting user: login=<%s>", login);
194 auth_delete_user(au);
198 struct auth_zone *az = cmd_need_zone(c);
199 struct auth_acct *aa = auth_find_acct(au, az, 0);
202 msg(L_INFO, "Deleting account: login=<%s> zone=<%s>", login, az->name);
203 auth_delete_acct(aa);
204 if (!clist_head(&au->accounts))
206 msg(L_INFO, "Deleting user with no accounts: login=<%s>", login);
207 auth_delete_user(au);
215 static void cmd_set_passwd(struct client *c)
217 struct auth_acct *aa = cmd_need_target_acct(c);
218 const char *passwd = cmd_need_string(c, "passwd");
220 if (!aa->zone->allow_passwd)
221 cmd_error(c, "This zone does not allow authentication by password");
223 if (strchr(passwd, '-'))
224 cmd_error(c, "The minus sign is forbidden in passwords");
226 msg(L_INFO, "Set password: login=<%s> zone=<%s>", aa->user->login, aa->zone->name);
228 struct auth_token *at_old = auth_find_token_passwd(aa);
230 auth_delete_token(at_old);
232 struct auth_token *at = auth_create_token(aa);
233 auth_set_token_passwd(at, passwd);
239 static void cmd_delete_passwd(struct client *c)
241 struct auth_acct *aa = cmd_need_target_acct(c);
242 struct auth_token *at = auth_find_token_passwd(aa);
244 cmd_error(c, "No password set");
246 msg(L_INFO, "Deleted password: login=<%s> zone=<%s>", aa->user->login, aa->zone->name);
247 auth_delete_token(at);
253 static void cmd_create_token(struct client *c)
255 struct auth_acct *aa = cmd_need_target_acct(c);
257 if (!aa->zone->allow_tokens)
258 cmd_error(c, "This zone does not allow authentication by tokens");
260 if (clist_size(&aa->tokens) >= aa->zone->allow_tokens)
261 cmd_error(c, "Maximum number of tokens was reached");
263 struct auth_token *at = auth_create_token(aa);
264 char *tok = auth_set_token_generated(at, get_string(c->request, "comment"));
265 set_string(c, c->reply, "token", tok);
268 msg(L_INFO, "Created token: login=<%s> zone=<%s> id=<%s>", aa->user->login, aa->zone->name, at->ident);
274 static void cmd_delete_token(struct client *c)
276 struct auth_acct *aa = cmd_need_target_acct(c);
277 const char *ident = cmd_need_string(c, "ident");
278 bool all = !strcmp(ident, "*");
281 struct auth_token *tmp;
282 CLIST_FOR_EACH_DELSAFE(struct auth_token *, at, aa->tokens, tmp)
283 if (at->type == TOKEN_GENERATED && (all || !strcmp(at->ident, ident)))
286 msg(L_INFO, "Deleted token: login=<%s> zone=<%s> id=<%s>", aa->user->login, aa->zone->name, at->ident);
287 auth_delete_token(at);
290 if (!all && !matched)
291 cmd_error(c, "No such token");
297 static void cmd_login_fake(struct client *c, const char *passwd)
299 auth_check_token(auth_fake_token, passwd);
300 cmd_error(c, "Invalid password");
303 static void cmd_login(struct client *c)
305 struct auth_zone *az = cmd_need_zone(c);
306 const char *given_passwd = cmd_need_string(c, "passwd");
308 // Split password string to token ident and the password proper
309 char passbuf[strlen(given_passwd) + 1];
310 strcpy(passbuf, given_passwd);
311 char *ident, *passwd;
312 char *sep = strchr(passbuf, '-');
325 const char *login = cmd_need_string(c, "login");
326 struct auth_user *au = auth_find_user(login, 0);
329 msg(L_INFO, "Login failed: No user=<%s>", login);
330 return cmd_login_fake(c, passwd);
333 struct auth_acct *aa = auth_find_acct(au, az, 0);
336 msg(L_INFO, "Login failed: No account user=<%s> zone=<%s>", login, az->name);
337 return cmd_login_fake(c, passwd);
340 struct auth_token *at;
342 at = auth_find_token_generated(aa, ident);
344 at = auth_find_token_passwd(aa);
347 msg(L_INFO, "Login failed: No token user=<%s> zone=<%s> ident=<%s>", login, az->name, (ident ? : ""));
348 return cmd_login_fake(c, passwd);
351 if (!auth_check_token(at, passwd))
353 msg(L_INFO, "Login failed: Wrong password for user=<%s> zone=<%s> ident=<%s>", login, az->name, (ident ? : ""));
354 cmd_error(c, "Invalid password");
357 msg(L_INFO, "Login successful: user=<%s> zone=<%s> ident=<%s>", login, az->name, (ident ? : ""));
361 static void cmd_list_accts(struct client *c)
363 const char *login = cmd_need_target_login(c);
365 struct json_context *js = c->json;
366 set_string(c, c->reply, "login", login);
367 struct json_node *jas = json_new_array(js);
368 json_object_set(c->reply, "accounts", jas);
370 struct auth_user *au = auth_find_user(login, 0);
377 CLIST_FOR_EACH(struct auth_acct *, aa, au->accounts)
379 struct json_node *ja = json_new_object(js);
380 json_array_append(jas, ja);
381 set_string(c, ja, "zone", aa->zone->name);
383 struct json_node *jts = json_new_array(js);
384 json_object_set(ja, "tokens", jts);
386 CLIST_FOR_EACH(struct auth_token *, at, aa->tokens)
388 struct json_node *jt = json_new_object(js);
389 json_array_append(jts, jt);
394 case TOKEN_PASSWORD: type = "passwd"; break;
395 case TOKEN_GENERATED: type = "token"; break;
396 default: type = "unknown"; break;
398 set_string(c, jt, "type", type);
400 set_string(c, jt, "ident", at->ident);
401 set_string(c, jt, "comment", at->comment);
402 set_uint(c, jt, "lastmod", at->last_modified);
409 static void cmd_list_zones(struct client *c)
411 struct json_context *js = c->json;
413 struct json_node *jzs = json_new_array(js);
414 json_object_set(c->reply, "zones", jzs);
416 CLIST_FOR_EACH(struct auth_zone *, az, zone_list)
418 struct json_node *jz = json_new_object(js);
419 json_array_append(jzs, jz);
420 set_string(c, jz, "name", az->name);
421 set_string(c, jz, "desc", az->desc);
422 set_uint(c, jz, "allow-passwd", az->allow_passwd);
423 set_uint(c, jz, "allow-tokens", az->allow_tokens);
431 void (*handler)(struct client *c);
434 static const struct command command_table[] = {
436 { "create-acct", cmd_create_acct },
437 { "delete-acct", cmd_delete_acct },
438 { "create-token", cmd_create_token },
439 { "delete-token", cmd_delete_token },
440 { "set-passwd", cmd_set_passwd },
441 { "delete-passwd", cmd_delete_passwd },
442 { "login", cmd_login },
443 { "list-accts", cmd_list_accts },
444 { "list-zones", cmd_list_zones },
447 void cmd_dispatch(struct client *c)
449 struct json_node *rq = c->request;
452 if (rq->type != JSON_OBJECT || !(cmd = get_string(rq, "cmd")))
454 set_string(c, c->reply, "error", "Malformed request");
458 const struct command *command = NULL;
459 for (uint i=0; i < ARRAY_SIZE(command_table); i++)
460 if (!strcmp(cmd, command_table[i].cmd))
462 command = &command_table[i];
467 set_string(c, c->reply, "error", "No such command");