mirror of
https://github.com/mpv-player/mpv
synced 2024-12-25 00:02:13 +00:00
415 lines
13 KiB
C
415 lines
13 KiB
C
/*
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* This file is part of mpv.
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*
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* mpv is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* mpv is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with mpv. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "common/msg.h"
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#include "input/input.h"
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#include "misc/json.h"
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#include "misc/node.h"
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#include "options/m_option.h"
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#include "options/options.h"
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#include "options/path.h"
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#include "player/client.h"
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static mpv_node *mpv_node_array_get(mpv_node *src, int index)
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{
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if (src->format != MPV_FORMAT_NODE_ARRAY)
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return NULL;
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if (src->u.list->num < (index + 1))
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return NULL;
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return &src->u.list->values[index];
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}
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static void mpv_node_map_add(void *ta_parent, mpv_node *src, const char *key, mpv_node *val)
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{
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if (src->format != MPV_FORMAT_NODE_MAP)
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return;
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if (!src->u.list)
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src->u.list = talloc_zero(ta_parent, mpv_node_list);
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MP_TARRAY_GROW(src->u.list, src->u.list->keys, src->u.list->num);
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MP_TARRAY_GROW(src->u.list, src->u.list->values, src->u.list->num);
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src->u.list->keys[src->u.list->num] = talloc_strdup(ta_parent, key);
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static const struct m_option type = { .type = CONF_TYPE_NODE };
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m_option_get_node(&type, ta_parent, &src->u.list->values[src->u.list->num], val);
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src->u.list->num++;
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}
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static void mpv_node_map_add_null(void *ta_parent, mpv_node *src, const char *key)
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{
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mpv_node val_node = {.format = MPV_FORMAT_NONE};
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mpv_node_map_add(ta_parent, src, key, &val_node);
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}
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static void mpv_node_map_add_int64(void *ta_parent, mpv_node *src, const char *key, int64_t val)
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{
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mpv_node val_node = {.format = MPV_FORMAT_INT64, .u.int64 = val};
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mpv_node_map_add(ta_parent, src, key, &val_node);
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}
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static void mpv_node_map_add_string(void *ta_parent, mpv_node *src, const char *key, const char *val)
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{
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mpv_node val_node = {.format = MPV_FORMAT_STRING, .u.string = (char*)val};
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mpv_node_map_add(ta_parent, src, key, &val_node);
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}
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// This is supposed to write a reply that looks like "normal" command execution.
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static void mpv_format_command_reply(void *ta_parent, mpv_event *event,
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mpv_node *dst)
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{
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assert(event->event_id == MPV_EVENT_COMMAND_REPLY);
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mpv_event_command *cmd = event->data;
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mpv_node_map_add_int64(ta_parent, dst, "request_id", event->reply_userdata);
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mpv_node_map_add_string(ta_parent, dst, "error",
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mpv_error_string(event->error));
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mpv_node_map_add(ta_parent, dst, "data", &cmd->result);
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}
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char *mp_json_encode_event(mpv_event *event)
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{
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void *ta_parent = talloc_new(NULL);
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struct mpv_node event_node;
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if (event->event_id == MPV_EVENT_COMMAND_REPLY) {
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event_node = (mpv_node){.format = MPV_FORMAT_NODE_MAP, .u.list = NULL};
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mpv_format_command_reply(ta_parent, event, &event_node);
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} else {
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mpv_event_to_node(&event_node, event);
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// Abuse mpv_event_to_node() internals.
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talloc_steal(ta_parent, node_get_alloc(&event_node));
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}
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char *output = talloc_strdup(NULL, "");
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json_write(&output, &event_node);
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output = ta_talloc_strdup_append(output, "\n");
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talloc_free(ta_parent);
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return output;
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}
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// Function is allowed to modify src[n].
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static char *json_execute_command(struct mpv_handle *client, void *ta_parent,
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char *src)
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{
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int rc;
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const char *cmd = NULL;
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struct mp_log *log = mp_client_get_log(client);
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mpv_node msg_node;
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mpv_node reply_node = {.format = MPV_FORMAT_NODE_MAP, .u.list = NULL};
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mpv_node *reqid_node = NULL;
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int64_t reqid = 0;
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mpv_node *async_node = NULL;
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bool async = false;
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bool send_reply = true;
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rc = json_parse(ta_parent, &msg_node, &src, MAX_JSON_DEPTH);
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if (rc < 0) {
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mp_err(log, "malformed JSON received: '%s'\n", src);
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rc = MPV_ERROR_INVALID_PARAMETER;
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goto error;
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}
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if (msg_node.format != MPV_FORMAT_NODE_MAP) {
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rc = MPV_ERROR_INVALID_PARAMETER;
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goto error;
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}
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async_node = node_map_get(&msg_node, "async");
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if (async_node) {
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if (async_node->format != MPV_FORMAT_FLAG) {
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rc = MPV_ERROR_INVALID_PARAMETER;
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goto error;
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}
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async = async_node->u.flag;
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}
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reqid_node = node_map_get(&msg_node, "request_id");
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if (reqid_node) {
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if (reqid_node->format == MPV_FORMAT_INT64) {
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reqid = reqid_node->u.int64;
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} else if (async) {
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mp_err(log, "'request_id' must be an integer for async commands.\n");
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rc = MPV_ERROR_INVALID_PARAMETER;
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goto error;
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} else {
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mp_warn(log, "'request_id' must be an integer. Using other types is "
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"deprecated and will trigger an error in the future!\n");
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}
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}
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mpv_node *cmd_node = node_map_get(&msg_node, "command");
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if (!cmd_node) {
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rc = MPV_ERROR_INVALID_PARAMETER;
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goto error;
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}
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if (cmd_node->format == MPV_FORMAT_NODE_ARRAY) {
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mpv_node *cmd_str_node = mpv_node_array_get(cmd_node, 0);
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if (!cmd_str_node || (cmd_str_node->format != MPV_FORMAT_STRING)) {
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rc = MPV_ERROR_INVALID_PARAMETER;
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goto error;
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}
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cmd = cmd_str_node->u.string;
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}
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if (cmd && !strcmp("client_name", cmd)) {
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const char *client_name = mpv_client_name(client);
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mpv_node_map_add_string(ta_parent, &reply_node, "data", client_name);
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rc = MPV_ERROR_SUCCESS;
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} else if (cmd && !strcmp("get_time_us", cmd)) {
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int64_t time_us = mpv_get_time_us(client);
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mpv_node_map_add_int64(ta_parent, &reply_node, "data", time_us);
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rc = MPV_ERROR_SUCCESS;
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} else if (cmd && !strcmp("get_version", cmd)) {
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int64_t ver = mpv_client_api_version();
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mpv_node_map_add_int64(ta_parent, &reply_node, "data", ver);
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rc = MPV_ERROR_SUCCESS;
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} else if (cmd && !strcmp("get_property", cmd)) {
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mpv_node result_node;
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if (cmd_node->u.list->num != 2) {
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rc = MPV_ERROR_INVALID_PARAMETER;
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goto error;
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}
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if (cmd_node->u.list->values[1].format != MPV_FORMAT_STRING) {
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rc = MPV_ERROR_INVALID_PARAMETER;
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goto error;
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}
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rc = mpv_get_property(client, cmd_node->u.list->values[1].u.string,
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MPV_FORMAT_NODE, &result_node);
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if (rc >= 0) {
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mpv_node_map_add(ta_parent, &reply_node, "data", &result_node);
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mpv_free_node_contents(&result_node);
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}
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} else if (cmd && !strcmp("get_property_string", cmd)) {
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if (cmd_node->u.list->num != 2) {
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rc = MPV_ERROR_INVALID_PARAMETER;
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goto error;
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}
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if (cmd_node->u.list->values[1].format != MPV_FORMAT_STRING) {
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rc = MPV_ERROR_INVALID_PARAMETER;
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goto error;
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}
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char *result = mpv_get_property_string(client,
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cmd_node->u.list->values[1].u.string);
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if (result) {
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mpv_node_map_add_string(ta_parent, &reply_node, "data", result);
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mpv_free(result);
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} else {
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mpv_node_map_add_null(ta_parent, &reply_node, "data");
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}
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} else if (cmd && (!strcmp("set_property", cmd) ||
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!strcmp("set_property_string", cmd)))
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{
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if (cmd_node->u.list->num != 3) {
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rc = MPV_ERROR_INVALID_PARAMETER;
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goto error;
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}
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if (cmd_node->u.list->values[1].format != MPV_FORMAT_STRING) {
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rc = MPV_ERROR_INVALID_PARAMETER;
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goto error;
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}
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rc = mpv_set_property(client, cmd_node->u.list->values[1].u.string,
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MPV_FORMAT_NODE, &cmd_node->u.list->values[2]);
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} else if (cmd && !strcmp("observe_property", cmd)) {
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if (cmd_node->u.list->num != 3) {
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rc = MPV_ERROR_INVALID_PARAMETER;
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goto error;
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}
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if (cmd_node->u.list->values[1].format != MPV_FORMAT_INT64) {
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rc = MPV_ERROR_INVALID_PARAMETER;
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goto error;
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}
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if (cmd_node->u.list->values[2].format != MPV_FORMAT_STRING) {
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rc = MPV_ERROR_INVALID_PARAMETER;
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goto error;
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}
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rc = mpv_observe_property(client,
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cmd_node->u.list->values[1].u.int64,
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cmd_node->u.list->values[2].u.string,
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MPV_FORMAT_NODE);
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} else if (cmd && !strcmp("observe_property_string", cmd)) {
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if (cmd_node->u.list->num != 3) {
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rc = MPV_ERROR_INVALID_PARAMETER;
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goto error;
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}
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if (cmd_node->u.list->values[1].format != MPV_FORMAT_INT64) {
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rc = MPV_ERROR_INVALID_PARAMETER;
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goto error;
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}
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if (cmd_node->u.list->values[2].format != MPV_FORMAT_STRING) {
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rc = MPV_ERROR_INVALID_PARAMETER;
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goto error;
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}
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rc = mpv_observe_property(client,
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cmd_node->u.list->values[1].u.int64,
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cmd_node->u.list->values[2].u.string,
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MPV_FORMAT_STRING);
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} else if (cmd && !strcmp("unobserve_property", cmd)) {
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if (cmd_node->u.list->num != 2) {
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rc = MPV_ERROR_INVALID_PARAMETER;
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goto error;
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}
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if (cmd_node->u.list->values[1].format != MPV_FORMAT_INT64) {
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rc = MPV_ERROR_INVALID_PARAMETER;
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goto error;
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}
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rc = mpv_unobserve_property(client,
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cmd_node->u.list->values[1].u.int64);
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} else if (cmd && !strcmp("request_log_messages", cmd)) {
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if (cmd_node->u.list->num != 2) {
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rc = MPV_ERROR_INVALID_PARAMETER;
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goto error;
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}
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if (cmd_node->u.list->values[1].format != MPV_FORMAT_STRING) {
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rc = MPV_ERROR_INVALID_PARAMETER;
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goto error;
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}
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rc = mpv_request_log_messages(client,
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cmd_node->u.list->values[1].u.string);
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} else if (cmd && (!strcmp("enable_event", cmd) ||
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!strcmp("disable_event", cmd)))
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{
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bool enable = !strcmp("enable_event", cmd);
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if (cmd_node->u.list->num != 2) {
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rc = MPV_ERROR_INVALID_PARAMETER;
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goto error;
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}
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if (cmd_node->u.list->values[1].format != MPV_FORMAT_STRING) {
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rc = MPV_ERROR_INVALID_PARAMETER;
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goto error;
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}
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char *name = cmd_node->u.list->values[1].u.string;
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if (strcmp(name, "all") == 0) {
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for (int n = 0; n < 64; n++)
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mpv_request_event(client, n, enable);
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rc = MPV_ERROR_SUCCESS;
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} else {
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int event = -1;
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for (int n = 0; n < 64; n++) {
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const char *evname = mpv_event_name(n);
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if (evname && strcmp(evname, name) == 0)
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event = n;
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}
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if (event < 0) {
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rc = MPV_ERROR_INVALID_PARAMETER;
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goto error;
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}
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rc = mpv_request_event(client, event, enable);
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}
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} else {
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mpv_node result_node = {0};
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if (async) {
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rc = mpv_command_node_async(client, reqid, cmd_node);
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if (rc >= 0)
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send_reply = false;
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} else {
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rc = mpv_command_node(client, cmd_node, &result_node);
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if (rc >= 0)
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mpv_node_map_add(ta_parent, &reply_node, "data", &result_node);
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}
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mpv_free_node_contents(&result_node);
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}
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error:
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/* If the request contains a "request_id", copy it back into the response.
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* This makes it easier on the requester to match up the IPC results with
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* the original requests.
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*/
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if (reqid_node) {
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mpv_node_map_add(ta_parent, &reply_node, "request_id", reqid_node);
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} else {
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mpv_node_map_add_int64(ta_parent, &reply_node, "request_id", 0);
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}
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mpv_node_map_add_string(ta_parent, &reply_node, "error", mpv_error_string(rc));
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char *output = talloc_strdup(ta_parent, "");
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if (send_reply) {
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json_write(&output, &reply_node);
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output = ta_talloc_strdup_append(output, "\n");
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}
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return output;
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}
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static char *text_execute_command(struct mpv_handle *client, void *tmp, char *src)
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{
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mpv_command_string(client, src);
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return NULL;
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}
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char *mp_ipc_consume_next_command(struct mpv_handle *client, void *ctx, bstr *buf)
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{
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void *tmp = talloc_new(NULL);
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bstr rest;
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bstr line = bstr_getline(*buf, &rest);
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char *line0 = bstrto0(tmp, line);
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talloc_steal(tmp, buf->start);
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*buf = bstrdup(NULL, rest);
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json_skip_whitespace(&line0);
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char *reply_msg = NULL;
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if (line0[0] == '\0' || line0[0] == '#') {
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// skip
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} else if (line0[0] == '{') {
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reply_msg = json_execute_command(client, tmp, line0);
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} else {
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reply_msg = text_execute_command(client, tmp, line0);
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}
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talloc_steal(ctx, reply_msg);
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talloc_free(tmp);
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return reply_msg;
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}
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