bool w_query_legacy_field_list(struct w_query_field_list *flist)
{
static const char *names[] = {
"name", "exists", "size", "mode", "uid", "gid", "mtime",
"ctime", "ino", "dev", "nlink", "new", "cclock", "oclock"
};
uint8_t i;
json_t *list = json_array();
bool res;
char *errmsg = NULL;
for (i = 0; i < sizeof(names)/sizeof(names[0]); i++) {
json_array_append_new(list, json_string_nocheck(names[i]));
}
res = parse_field_list(list, flist, &errmsg);
json_decref(list);
if (errmsg) {
w_log(W_LOG_FATAL, "should never happen: %s\n", errmsg);
}
return res;
}
void w_query_legacy_field_list(w_query_field_list* flist) {
static const char *names[] = {
"name", "exists", "size", "mode", "uid", "gid", "mtime",
"ctime", "ino", "dev", "nlink", "new", "cclock", "oclock"
};
uint8_t i;
auto list = json_array();
for (i = 0; i < sizeof(names)/sizeof(names[0]); i++) {
json_array_append_new(list, typed_string_to_json(names[i],
W_STRING_UNICODE));
}
parse_field_list(list, flist);
}
std::shared_ptr<w_query> w_query_parse(
const std::shared_ptr<w_root_t>& root,
const json_ref& query) {
auto result = std::make_shared<w_query>();
auto res = result.get();
parse_benchmark(res, query);
parse_case_sensitive(res, root, query);
parse_sync(res, query);
parse_dedup(res, query);
parse_lock_timeout(res, query);
parse_relative_root(root, res, query);
parse_empty_on_fresh_instance(res, query);
/* Look for path generators */
parse_paths(res, query);
/* Look for glob generators */
parse_globs(res, query);
/* Look for suffix generators */
parse_suffixes(res, query);
/* Look for since generator */
parse_since(res, query);
parse_query_expression(res, query);
parse_request_id(res, query);
parse_field_list(query.get_default("fields"), &res->fieldList);
res->query_spec = query;
return result;
}
/* subscribe /root subname {query}
* Subscribes the client connection to the specified root. */
void cmd_subscribe(struct watchman_client *client, json_t *args)
{
w_root_t *root;
struct watchman_client_subscription *sub;
json_t *resp;
const char *name;
json_t *jfield_list;
w_query *query;
json_t *query_spec;
struct w_query_field_list field_list;
char *errmsg;
if (json_array_size(args) != 4) {
send_error_response(client, "wrong number of arguments for subscribe");
return;
}
root = resolve_root_or_err(client, args, 1, true);
if (!root) {
return;
}
name = json_string_value(json_array_get(args, 2));
if (!name) {
send_error_response(client,
"expected 2nd parameter to be subscription name");
goto done;
}
query_spec = json_array_get(args, 3);
jfield_list = json_object_get(query_spec, "fields");
if (!parse_field_list(jfield_list, &field_list, &errmsg)) {
send_error_response(client, "invalid field list: %s", errmsg);
free(errmsg);
goto done;
}
query = w_query_parse(query_spec, &errmsg);
if (!query) {
send_error_response(client, "failed to parse query: %s", errmsg);
free(errmsg);
goto done;
}
sub = calloc(1, sizeof(*sub));
if (!sub) {
send_error_response(client, "no memory!");
goto done;
}
sub->name = w_string_new(name);
sub->query = query;
memcpy(&sub->field_list, &field_list, sizeof(field_list));
sub->root = root;
pthread_mutex_lock(&w_client_lock);
w_ht_replace(client->subscriptions, w_ht_ptr_val(sub->name),
w_ht_ptr_val(sub));
pthread_mutex_unlock(&w_client_lock);
resp = make_response();
annotate_with_clock(root, resp);
set_prop(resp, "subscribe", json_string(name));
send_and_dispose_response(client, resp);
resp = build_subscription_results(sub, root);
if (resp) {
send_and_dispose_response(client, resp);
}
done:
w_root_delref(root);
}
/* query /root {query} */
static void cmd_query(struct watchman_client *client, json_t *args)
{
w_root_t *root;
w_query *query;
json_t *query_spec;
char *errmsg = NULL;
w_query_res res;
json_t *response;
json_t *file_list, *jfield_list;
char clockbuf[128];
struct w_query_field_list field_list;
if (json_array_size(args) != 3) {
send_error_response(client, "wrong number of arguments for 'query'");
return;
}
root = resolve_root_or_err(client, args, 1, false);
if (!root) {
return;
}
query_spec = json_array_get(args, 2);
jfield_list = json_object_get(query_spec, "fields");
if (!parse_field_list(jfield_list, &field_list, &errmsg)) {
send_error_response(client, "invalid field list: %s", errmsg);
free(errmsg);
w_root_delref(root);
return;
}
query = w_query_parse(root, query_spec, &errmsg);
if (!query) {
send_error_response(client, "failed to parse query: %s", errmsg);
free(errmsg);
w_root_delref(root);
return;
}
if (client->client_mode) {
query->sync_timeout = 0;
}
if (!w_query_execute(query, root, &res, NULL, NULL)) {
send_error_response(client, "query failed: %s", res.errmsg);
w_query_result_free(&res);
w_root_delref(root);
w_query_delref(query);
return;
}
w_query_delref(query);
file_list = w_query_results_to_json(&field_list,
res.num_results, res.results);
w_query_result_free(&res);
response = make_response();
if (clock_id_string(res.root_number, res.ticks, clockbuf, sizeof(clockbuf))) {
set_prop(response, "clock", json_string_nocheck(clockbuf));
}
set_prop(response, "is_fresh_instance",
json_pack("b", res.is_fresh_instance));
set_prop(response, "files", file_list);
send_and_dispose_response(client, response);
w_root_delref(root);
}
struct watchman_trigger_command *w_build_trigger_from_def(
w_root_t *root, json_t *trig, char **errmsg)
{
struct watchman_trigger_command *cmd;
json_t *ele, *query;
json_int_t jint;
const char *name = NULL;
cmd = calloc(1, sizeof(*cmd));
if (!cmd) {
*errmsg = strdup("no memory");
return NULL;
}
cmd->definition = trig;
json_incref(cmd->definition);
query = json_pack("{s:O}", "expression",
json_object_get(cmd->definition, "expression"));
cmd->query = w_query_parse(query, errmsg);
json_decref(query);
if (!cmd->query) {
w_trigger_command_free(cmd);
return NULL;
}
json_unpack(trig, "{s:s}", "name", &name);
if (!name) {
*errmsg = strdup("invalid or missing name");
w_trigger_command_free(cmd);
return NULL;
}
cmd->triggername = w_string_new(name);
cmd->command = json_object_get(trig, "command");
if (cmd->command) {
json_incref(cmd->command);
}
if (!cmd->command || !json_is_array(cmd->command) ||
!json_array_size(cmd->command)) {
*errmsg = strdup("invalid command array");
w_trigger_command_free(cmd);
return NULL;
}
json_unpack(trig, "{s:b}", "append_files", &cmd->append_files);
ele = json_object_get(trig, "stdin");
if (!ele) {
cmd->stdin_style = input_dev_null;
} else if (json_is_array(ele)) {
cmd->stdin_style = input_json;
if (!parse_field_list(ele, &cmd->field_list, errmsg)) {
w_trigger_command_free(cmd);
return NULL;
}
} else if (json_is_string(ele)) {
const char *str = json_string_value(ele);
if (!strcmp(str, "/dev/null")) {
cmd->stdin_style = input_dev_null;
} else if (!strcmp(str, "NAME_PER_LINE")) {
cmd->stdin_style = input_name_list;
} else {
ignore_result(asprintf(errmsg, "invalid stdin value %s", str));
w_trigger_command_free(cmd);
return NULL;
}
} else {
*errmsg = strdup("invalid value for stdin");
w_trigger_command_free(cmd);
return NULL;
}
jint = 0; // unlimited unless specified
json_unpack(trig, "{s:I}", "max_files_stdin", &jint);
if (jint < 0) {
*errmsg = strdup("max_files_stdin must be >= 0");
w_trigger_command_free(cmd);
return NULL;
}
cmd->max_files_stdin = jint;
json_unpack(trig, "{s:s}", "stdout", &cmd->stdout_name);
json_unpack(trig, "{s:s}", "stderr", &cmd->stderr_name);
if (!parse_redirection(&cmd->stdout_name, &cmd->stdout_flags,
"stdout", errmsg)) {
w_trigger_command_free(cmd);
return NULL;
}
if (!parse_redirection(&cmd->stderr_name, &cmd->stderr_flags,
"stderr", errmsg)) {
w_trigger_command_free(cmd);
return NULL;
}
// Copy current environment
cmd->envht = w_envp_make_ht();
// Set some standard vars
w_envp_set(cmd->envht, "WATCHMAN_ROOT", root->root_path);
w_envp_set_cstring(cmd->envht, "WATCHMAN_SOCK", get_sock_name());
w_envp_set(cmd->envht, "WATCHMAN_TRIGGER", cmd->triggername);
return cmd;
}
/* subscribe /root subname {query}
* Subscribes the client connection to the specified root. */
static void cmd_subscribe(struct watchman_client *client, json_t *args)
{
w_root_t *root;
struct watchman_client_subscription *sub;
json_t *resp;
const char *name;
json_t *jfield_list;
w_query *query;
json_t *query_spec;
struct w_query_field_list field_list;
char *errmsg;
int defer = true; /* can't use bool because json_unpack requires int */
json_t *defer_list = NULL;
json_t *drop_list = NULL;
if (json_array_size(args) != 4) {
send_error_response(client, "wrong number of arguments for subscribe");
return;
}
root = resolve_root_or_err(client, args, 1, true);
if (!root) {
return;
}
name = json_string_value(json_array_get(args, 2));
if (!name) {
send_error_response(client,
"expected 2nd parameter to be subscription name");
goto done;
}
query_spec = json_array_get(args, 3);
jfield_list = json_object_get(query_spec, "fields");
if (!parse_field_list(jfield_list, &field_list, &errmsg)) {
send_error_response(client, "invalid field list: %s", errmsg);
free(errmsg);
goto done;
}
query = w_query_parse(root, query_spec, &errmsg);
if (!query) {
send_error_response(client, "failed to parse query: %s", errmsg);
free(errmsg);
goto done;
}
json_unpack(query_spec, "{s?:o}", "defer", &defer_list);
if (defer_list && !json_is_array(defer_list)) {
send_error_response(client, "defer field must be an array of strings");
goto done;
}
json_unpack(query_spec, "{s?:o}", "drop", &drop_list);
if (drop_list && !json_is_array(drop_list)) {
send_error_response(client, "drop field must be an array of strings");
goto done;
}
sub = calloc(1, sizeof(*sub));
if (!sub) {
send_error_response(client, "no memory!");
goto done;
}
sub->name = w_string_new(name);
sub->query = query;
json_unpack(query_spec, "{s?:b}", "defer_vcs", &defer);
sub->vcs_defer = defer;
if (drop_list || defer_list) {
size_t i;
sub->drop_or_defer = w_ht_new(2, &w_ht_string_funcs);
if (defer_list) {
for (i = 0; i < json_array_size(defer_list); i++) {
w_ht_replace(sub->drop_or_defer,
w_ht_ptr_val(w_string_new(json_string_value(
json_array_get(defer_list, i)))), false);
}
}
if (drop_list) {
for (i = 0; i < json_array_size(drop_list); i++) {
w_ht_replace(sub->drop_or_defer,
w_ht_ptr_val(w_string_new(json_string_value(
json_array_get(drop_list, i)))), true);
}
}
}
memcpy(&sub->field_list, &field_list, sizeof(field_list));
sub->root = root;
pthread_mutex_lock(&w_client_lock);
w_ht_replace(client->subscriptions, w_ht_ptr_val(sub->name),
w_ht_ptr_val(sub));
pthread_mutex_unlock(&w_client_lock);
resp = make_response();
annotate_with_clock(root, resp);
set_prop(resp, "subscribe", json_string(name));
add_root_warnings_to_response(resp, root);
send_and_dispose_response(client, resp);
resp = build_subscription_results(sub, root);
if (resp) {
send_and_dispose_response(client, resp);
}
done:
w_root_delref(root);
}