/* * weechat-js.cpp - javascript plugin for WeeChat * * Copyright (C) 2013 Koka El Kiwi * Copyright (C) 2015-2021 Sébastien Helleu * * This file is part of WeeChat, the extensible chat client. * * WeeChat is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 3 of the License, or * (at your option) any later version. * * WeeChat is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with WeeChat. If not, see . */ #include #include #include extern "C" { #include "../weechat-plugin.h" #include "../plugin-script.h" } #include "weechat-js.h" #include "weechat-js-api.h" #include "weechat-js-v8.h" WEECHAT_PLUGIN_NAME(JS_PLUGIN_NAME); WEECHAT_PLUGIN_DESCRIPTION("Support of javascript scripts"); WEECHAT_PLUGIN_AUTHOR("Koka El Kiwi "); WEECHAT_PLUGIN_VERSION(WEECHAT_VERSION); WEECHAT_PLUGIN_LICENSE(WEECHAT_LICENSE); WEECHAT_PLUGIN_PRIORITY(4000); struct t_weechat_plugin *weechat_js_plugin = NULL; struct t_plugin_script_data js_data; struct t_config_file *js_config_file = NULL; struct t_config_option *js_config_look_check_license = NULL; struct t_config_option *js_config_look_eval_keep_context = NULL; int js_quiet = 0; struct t_plugin_script *js_script_eval = NULL; int js_eval_mode = 0; int js_eval_send_input = 0; int js_eval_exec_commands = 0; struct t_gui_buffer *js_eval_buffer = NULL; struct t_plugin_script *js_scripts = NULL; struct t_plugin_script *last_js_script = NULL; struct t_plugin_script *js_current_script = NULL; struct t_plugin_script *js_registered_script = NULL; const char *js_current_script_filename = NULL; WeechatJsV8 *js_current_interpreter = NULL; /* * string used to execute action "install": * when signal "js_script_install" is received, name of string * is added to this string, to be installed later by a timer (when nothing is * running in script) */ char *js_action_install_list = NULL; /* * string used to execute action "remove": * when signal "js_script_remove" is received, name of string * is added to this string, to be removed later by a timer (when nothing is * running in script) */ char *js_action_remove_list = NULL; /* * string used to execute action "autoload": * when signal "js_script_autoload" is received, name of string * is added to this string, to autoload or disable autoload later by a timer * (when nothing is running in script) */ char *js_action_autoload_list = NULL; /* * Callback called for each key/value in a hashtable. */ void weechat_js_hashtable_map_cb (void *data, struct t_hashtable *hashtable, const char *key, const char *value) { /* make C++ compiler happy */ (void) hashtable; v8::Handle *obj = (v8::Handle *)data; (*obj)->Set(v8::String::New(key), v8::String::New(value)); } /* * Converts a WeeChat hashtable to a javascript hashtable. */ v8::Handle weechat_js_hashtable_to_object (struct t_hashtable *hashtable) { v8::Handle obj = v8::Object::New(); weechat_hashtable_map_string (hashtable, &weechat_js_hashtable_map_cb, &obj); return obj; } /* * Converts a javascript hashtable to a WeeChat hashtable. * * Note: hashtable must be freed after use. */ struct t_hashtable * weechat_js_object_to_hashtable (v8::Handle obj, int size, const char *type_keys, const char *type_values) { struct t_hashtable *hashtable; unsigned int i; v8::Handle keys; v8::Handle key, value; hashtable = weechat_hashtable_new (size, type_keys, type_values, NULL, NULL); if (!hashtable) return NULL; keys = obj->GetPropertyNames(); for (i = 0; i < keys->Length(); i++) { key = keys->Get(i); value = obj->Get(key); v8::String::Utf8Value str_key(key); v8::String::Utf8Value str_value(value); if (strcmp (type_values, WEECHAT_HASHTABLE_STRING) == 0) { weechat_hashtable_set (hashtable, *str_key, *str_value); } else if (strcmp (type_values, WEECHAT_HASHTABLE_POINTER) == 0) { weechat_hashtable_set (hashtable, *str_key, plugin_script_str2ptr (weechat_js_plugin, NULL, NULL, *str_value)); } } return hashtable; } /* * Executes a javascript function. */ void * weechat_js_exec (struct t_plugin_script *script, int ret_type, const char *function, const char *format, void **argv) { struct t_plugin_script *old_js_current_script; WeechatJsV8 *js_v8; void *ret_value; v8::Handle argv2[16], ret_js; int i, argc, *ret_int; ret_value = NULL; old_js_current_script = js_current_script; js_current_script = script; js_v8 = (WeechatJsV8 *)(script->interpreter); if (!js_v8->functionExists(function)) { weechat_printf (NULL, weechat_gettext ("%s%s: unable to run function \"%s\""), weechat_prefix ("error"), JS_PLUGIN_NAME, function); goto end; } argc = 0; if (format && format[0]) { argc = strlen (format); for (i = 0; i < argc; i++) { switch (format[i]) { case 's': /* string */ argv2[i] = v8::String::New((const char *)argv[i]); break; case 'i': /* integer */ argv2[i] = v8::Integer::New(*((int *)argv[i])); break; case 'h': /* hash */ argv2[i] = weechat_js_hashtable_to_object ( (struct t_hashtable *)argv[i]); break; } } } ret_js = js_v8->execFunction(function, argc, (argc > 0) ? argv2 : NULL); if (!ret_js.IsEmpty()) { if ((ret_type == WEECHAT_SCRIPT_EXEC_STRING) && (ret_js->IsString())) { v8::String::Utf8Value temp_str(ret_js); ret_value = (*temp_str) ? strdup(*temp_str) : NULL; } else if ((ret_type == WEECHAT_SCRIPT_EXEC_POINTER) && (ret_js->IsString())) { v8::String::Utf8Value temp_str(ret_js); if (*temp_str) { ret_value = plugin_script_str2ptr (weechat_js_plugin, script->name, function, *temp_str); } else { ret_value = NULL; } } else if ((ret_type == WEECHAT_SCRIPT_EXEC_INT) && (ret_js->IsInt32())) { ret_int = (int *)malloc (sizeof (*ret_int)); if (ret_int) *ret_int = (int)(ret_js->IntegerValue()); ret_value = ret_int; } else if ((ret_type == WEECHAT_SCRIPT_EXEC_HASHTABLE) && (ret_js->IsObject())) { ret_value = (struct t_hashtable *)weechat_js_object_to_hashtable ( ret_js->ToObject(), WEECHAT_SCRIPT_HASHTABLE_DEFAULT_SIZE, WEECHAT_HASHTABLE_STRING, WEECHAT_HASHTABLE_STRING); } else { if (ret_type != WEECHAT_SCRIPT_EXEC_IGNORE) { weechat_printf (NULL, weechat_gettext ("%s%s: function \"%s\" must " "return a valid value"), weechat_prefix ("error"), JS_PLUGIN_NAME, function); } } } if ((ret_type != WEECHAT_SCRIPT_EXEC_IGNORE) && !ret_value) { weechat_printf (NULL, weechat_gettext ("%s%s: error in function \"%s\""), weechat_prefix ("error"), JS_PLUGIN_NAME, function); } end: js_current_script = old_js_current_script; return ret_value; } /* * Loads a javascript script. * * If code is NULL, the content of filename is read and executed. * If code is not NULL, it is executed (the file is not read). * * Returns pointer to new registered script, NULL if error. */ struct t_plugin_script * weechat_js_load (const char *filename, const char *code) { char *source; /* make C compiler happy */ /* TODO: implement load of code in Javascript */ (void) code; source = weechat_file_get_content (filename); if (!source) { weechat_printf (NULL, weechat_gettext ("%s%s: script \"%s\" not found"), weechat_prefix ("error"), JS_PLUGIN_NAME, filename); return NULL; } if ((weechat_js_plugin->debug >= 2) || !js_quiet) { weechat_printf (NULL, weechat_gettext ("%s: loading script \"%s\""), JS_PLUGIN_NAME, filename); } js_current_script = NULL; js_registered_script = NULL; js_current_interpreter = new WeechatJsV8(); if (!js_current_interpreter) { weechat_printf (NULL, weechat_gettext ("%s%s: unable to create new " "sub-interpreter"), weechat_prefix ("error"), JS_PLUGIN_NAME); free (source); return NULL; } /* load libs */ js_current_interpreter->loadLibs(); js_current_script_filename = filename; if (!js_current_interpreter->load(source)) { weechat_printf (NULL, weechat_gettext ("%s%s: unable to load file \"%s\""), weechat_prefix ("error"), JS_PLUGIN_NAME); delete js_current_interpreter; free (source); /* if script was registered, remove it from list */ if (js_current_script) { plugin_script_remove (weechat_js_plugin, &js_scripts, &last_js_script, js_current_script); js_current_script = NULL; } return NULL; } free (source); if (!js_current_interpreter->execScript()) { weechat_printf (NULL, weechat_gettext ("%s%s: unable to execute file " "\"%s\""), weechat_prefix ("error"), JS_PLUGIN_NAME, filename); delete js_current_interpreter; /* if script was registered, remove it from list */ if (js_current_script) { plugin_script_remove (weechat_js_plugin, &js_scripts, &last_js_script, js_current_script); js_current_script = NULL; } return NULL; } if (!js_registered_script) { weechat_printf (NULL, weechat_gettext ("%s%s: function \"register\" not " "found (or failed) in file \"%s\""), weechat_prefix ("error"), JS_PLUGIN_NAME, filename); delete js_current_interpreter; return NULL; } js_current_script = js_registered_script; /* * set input/close callbacks for buffers created by this script * (to restore callbacks after upgrade) */ plugin_script_set_buffer_callbacks (weechat_js_plugin, js_scripts, js_current_script, &weechat_js_api_buffer_input_data_cb, &weechat_js_api_buffer_close_cb); weechat_hook_signal_send ("javascript_script_loaded", WEECHAT_HOOK_SIGNAL_STRING, js_current_script->filename); return js_current_script; } /* * Callback for script_auto_load() function. */ void weechat_js_load_cb (void *data, const char *filename) { /* make C++ compiler happy */ (void) data; weechat_js_load (filename, NULL); } /* * Unloads a javascript script. */ void weechat_js_unload (struct t_plugin_script *script) { int *rc; char *filename; void *interpreter; if ((weechat_js_plugin->debug >= 2) || !js_quiet) { weechat_printf (NULL, weechat_gettext ("%s: unloading script \"%s\""), JS_PLUGIN_NAME, script->name); } if (script->shutdown_func && script->shutdown_func[0]) { rc = (int *)weechat_js_exec (script, WEECHAT_SCRIPT_EXEC_INT, script->shutdown_func, NULL, NULL); if (rc) free (rc); } filename = strdup (script->filename); interpreter = script->interpreter; if (js_current_script == script) { js_current_script = (js_current_script->prev_script) ? js_current_script->prev_script : js_current_script->next_script; } plugin_script_remove (weechat_js_plugin, &js_scripts, &last_js_script, script); if (interpreter) delete((WeechatJsV8 *)interpreter); (void) weechat_hook_signal_send ("javascript_script_unloaded", WEECHAT_HOOK_SIGNAL_STRING, filename); if (filename) free (filename); } /* * Unloads a javascript script by name. */ void weechat_js_unload_name (const char *name) { struct t_plugin_script *ptr_script; ptr_script = plugin_script_search (weechat_js_plugin, js_scripts, name); if (ptr_script) { weechat_js_unload (ptr_script); if (!js_quiet) { weechat_printf (NULL, weechat_gettext ("%s: script \"%s\" unloaded"), JS_PLUGIN_NAME, name); } } else { weechat_printf (NULL, weechat_gettext ("%s%s: script \"%s\" not loaded"), weechat_prefix ("error"), JS_PLUGIN_NAME, name); } } /* * Unloads all javascript scripts. */ void weechat_js_unload_all () { while (js_scripts) { weechat_js_unload (js_scripts); } } /* * Reloads a javascript script by name. */ void weechat_js_reload_name (const char *name) { struct t_plugin_script *ptr_script; char *filename; ptr_script = plugin_script_search (weechat_js_plugin, js_scripts, name); if (ptr_script) { filename = strdup (ptr_script->filename); if (filename) { weechat_js_unload (ptr_script); if (!js_quiet) { weechat_printf (NULL, weechat_gettext ("%s: script \"%s\" unloaded"), JS_PLUGIN_NAME, name); } weechat_js_load (filename, NULL); free (filename); } } else { weechat_printf (NULL, weechat_gettext ("%s%s: script \"%s\" not loaded"), weechat_prefix ("error"), JS_PLUGIN_NAME, name); } } /* * Evaluates javascript source code. * * Returns: * 1: OK * 0: error */ int weechat_js_eval (struct t_gui_buffer *buffer, int send_to_buffer_as_input, int exec_commands, const char *code) { /* TODO: implement javascript eval */ (void) buffer; (void) send_to_buffer_as_input; (void) exec_commands; (void) code; return 1; } /* * Callback for command "/javascript". */ int weechat_js_command_cb (const void *pointer, void *data, struct t_gui_buffer *buffer, int argc, char **argv, char **argv_eol) { char *ptr_name, *ptr_code, *path_script; int i, send_to_buffer_as_input, exec_commands; /* make C++ compiler happy */ (void) pointer; (void) data; if (argc == 1) { plugin_script_display_list (weechat_js_plugin, js_scripts, NULL, 0); } else if (argc == 2) { if (weechat_strcasecmp (argv[1], "list") == 0) { plugin_script_display_list (weechat_js_plugin, js_scripts, NULL, 0); } else if (weechat_strcasecmp (argv[1], "listfull") == 0) { plugin_script_display_list (weechat_js_plugin, js_scripts, NULL, 1); } else if (weechat_strcasecmp (argv[1], "autoload") == 0) { plugin_script_auto_load (weechat_js_plugin, &weechat_js_load_cb); } else if (weechat_strcasecmp (argv[1], "reload") == 0) { weechat_js_unload_all (); plugin_script_auto_load (weechat_js_plugin, &weechat_js_load_cb); } else if (weechat_strcasecmp(argv[1], "unload") == 0) { weechat_js_unload_all (); } else if (weechat_strcasecmp (argv[1], "version") == 0) { plugin_script_display_interpreter (weechat_js_plugin, 0); } else WEECHAT_COMMAND_ERROR; } else { if (weechat_strcasecmp (argv[1], "list") == 0) { plugin_script_display_list (weechat_js_plugin, js_scripts, argv_eol[2], 0); } else if (weechat_strcasecmp (argv[1], "listfull") == 0) { plugin_script_display_list (weechat_js_plugin, js_scripts, argv_eol[2], 1); } else if ((weechat_strcasecmp (argv[1], "load") == 0) || (weechat_strcasecmp (argv[1], "reload") == 0) || (weechat_strcasecmp (argv[1], "unload") == 0)) { ptr_name = argv_eol[2]; if (strncmp (ptr_name, "-q ", 3) == 0) { js_quiet = 1; ptr_name += 3; while (ptr_name[0] == ' ') { ptr_name++; } } if (weechat_strcasecmp (argv[1], "load") == 0) { /* load javascript script */ path_script = plugin_script_search_path (weechat_js_plugin, ptr_name); weechat_js_load ((path_script) ? path_script : ptr_name, NULL); if (path_script) free (path_script); } else if (weechat_strcasecmp (argv[1], "reload") == 0) { /* reload one javascript script */ weechat_js_reload_name (ptr_name); } else if (weechat_strcasecmp (argv[1], "unload") == 0) { /* unload javascript script */ weechat_js_unload_name (ptr_name); } js_quiet = 0; } else if (weechat_strcasecmp (argv[1], "eval") == 0) { send_to_buffer_as_input = 0; exec_commands = 0; ptr_code = argv_eol[2]; for (i = 2; i < argc; i++) { if (argv[i][0] == '-') { if (strcmp (argv[i], "-o") == 0) { if (i + 1 >= argc) WEECHAT_COMMAND_ERROR; send_to_buffer_as_input = 1; exec_commands = 0; ptr_code = argv_eol[i + 1]; } else if (strcmp (argv[i], "-oc") == 0) { if (i + 1 >= argc) WEECHAT_COMMAND_ERROR; send_to_buffer_as_input = 1; exec_commands = 1; ptr_code = argv_eol[i + 1]; } } else break; } if (!weechat_js_eval (buffer, send_to_buffer_as_input, exec_commands, ptr_code)) WEECHAT_COMMAND_ERROR; /* TODO: implement /javascript eval */ weechat_printf (NULL, _("%sCommand \"/%s eval\" is not yet implemented"), weechat_prefix ("error"), weechat_js_plugin->name); } else WEECHAT_COMMAND_ERROR; } return WEECHAT_RC_OK; } /* * Adds javascript scripts to completion list. */ int weechat_js_completion_cb (const void *pointer, void *data, const char *completion_item, struct t_gui_buffer *buffer, struct t_gui_completion *completion) { /* make C++ compiler happy */ (void) pointer; (void) data; (void) completion_item; (void) buffer; plugin_script_completion (weechat_js_plugin, completion, js_scripts); return WEECHAT_RC_OK; } /* * Returns hdata for javascript scripts. */ struct t_hdata * weechat_js_hdata_cb (const void *pointer, void *data, const char *hdata_name) { /* make C++ compiler happy */ (void) pointer; (void) data; return plugin_script_hdata_script (weechat_plugin, &js_scripts, &last_js_script, hdata_name); } /* * Returns javascript info "javascript_eval". */ char * weechat_js_info_eval_cb (const void *pointer, void *data, const char *info_name, const char *arguments) { const char *not_implemented = "not yet implemented"; /* make C compiler happy */ (void) pointer; (void) data; (void) info_name; (void) arguments; return strdup (not_implemented); } /* * Returns infolist with javascript scripts. */ struct t_infolist * weechat_js_infolist_cb (const void *pointer, void *data, const char *infolist_name, void *obj_pointer, const char *arguments) { /* make C++ compiler happy */ (void) pointer; (void) data; if (!infolist_name || !infolist_name[0]) return NULL; if (weechat_strcasecmp (infolist_name, "javascript_script") == 0) { return plugin_script_infolist_list_scripts (weechat_js_plugin, js_scripts, obj_pointer, arguments); } return NULL; } /* * Dumps javascript plugin data in Weechat log file. */ int weechat_js_signal_debug_dump_cb (const void *pointer, void *data, const char *signal, const char *type_data, void *signal_data) { /* make C++ compiler happy */ (void) pointer; (void) data; (void) signal; (void) type_data; if (!signal_data || (weechat_strcasecmp ((char *)signal_data, JS_PLUGIN_NAME) == 0)) { plugin_script_print_log (weechat_js_plugin, js_scripts); } return WEECHAT_RC_OK; } /* * Timer for executing actions. */ int weechat_js_timer_action_cb (const void *pointer, void *data, int remaining_calls) { /* make C++ compiler happy */ (void) data; (void) remaining_calls; if (pointer) { if (pointer == &js_action_install_list) { plugin_script_action_install (weechat_js_plugin, js_scripts, &weechat_js_unload, &weechat_js_load, &js_quiet, &js_action_install_list); } else if (pointer == &js_action_remove_list) { plugin_script_action_remove (weechat_js_plugin, js_scripts, &weechat_js_unload, &js_quiet, &js_action_remove_list); } else if (pointer == &js_action_autoload_list) { plugin_script_action_autoload (weechat_js_plugin, &js_quiet, &js_action_autoload_list); } } return WEECHAT_RC_OK; } /* * Callback called when a script action is asked (install/remove/autoload a * script). */ int weechat_js_signal_script_action_cb (const void *pointer, void *data, const char *signal, const char *type_data, void *signal_data) { /* make C++ compiler happy */ (void) pointer; (void) data; if (strcmp (type_data, WEECHAT_HOOK_SIGNAL_STRING) == 0) { if (strcmp (signal, "javascript_script_install") == 0) { plugin_script_action_add (&js_action_install_list, (const char *)signal_data); weechat_hook_timer (1, 0, 1, &weechat_js_timer_action_cb, &js_action_install_list, NULL); } else if (strcmp (signal, "javascript_script_remove") == 0) { plugin_script_action_add (&js_action_remove_list, (const char *)signal_data); weechat_hook_timer (1, 0, 1, &weechat_js_timer_action_cb, &js_action_remove_list, NULL); } else if (strcmp (signal, "javascript_script_autoload") == 0) { plugin_script_action_add (&js_action_autoload_list, (const char *)signal_data); weechat_hook_timer (1, 0, 1, &weechat_js_timer_action_cb, &js_action_autoload_list, NULL); } } return WEECHAT_RC_OK; } /* * Initializes javascript plugin. */ EXPORT int weechat_plugin_init (struct t_weechat_plugin *plugin, int argc, char *argv[]) { char str_interpreter[64]; weechat_js_plugin = plugin; /* set interpreter name and version */ snprintf (str_interpreter, sizeof (str_interpreter), "%s (v8)", plugin->name); weechat_hashtable_set (plugin->variables, "interpreter_name", str_interpreter); weechat_hashtable_set (plugin->variables, "interpreter_version", v8::V8::GetVersion()); js_data.config_file = &js_config_file; js_data.config_look_check_license = &js_config_look_check_license; js_data.config_look_eval_keep_context = &js_config_look_eval_keep_context; js_data.scripts = &js_scripts; js_data.last_script = &last_js_script; js_data.callback_command = &weechat_js_command_cb; js_data.callback_completion = &weechat_js_completion_cb; js_data.callback_hdata = &weechat_js_hdata_cb; js_data.callback_info_eval = &weechat_js_info_eval_cb; js_data.callback_infolist = &weechat_js_infolist_cb; js_data.callback_signal_debug_dump = &weechat_js_signal_debug_dump_cb; js_data.callback_signal_script_action = &weechat_js_signal_script_action_cb; js_data.callback_load_file = &weechat_js_load_cb; js_data.unload_all = &weechat_js_unload_all; js_quiet = 1; plugin_script_init (plugin, argc, argv, &js_data); js_quiet = 0; plugin_script_display_short_list (weechat_js_plugin, js_scripts); return WEECHAT_RC_OK; } /* * Ends javascript plugin. */ EXPORT int weechat_plugin_end (struct t_weechat_plugin *plugin) { js_quiet = 1; if (js_script_eval) { weechat_js_unload (js_script_eval); js_script_eval = NULL; } plugin_script_end (plugin, &js_data); js_quiet = 0; /* free some data */ if (js_action_install_list) free (js_action_install_list); if (js_action_remove_list) free (js_action_remove_list); if (js_action_autoload_list) free (js_action_autoload_list); /* weechat_string_dyn_free (js_buffer_output, 1); */ return WEECHAT_RC_OK; }