| /* |
| * PACrunner - Proxy configuration daemon |
| * |
| * Copyright © 2013-2016 Intel Corporation. All rights reserved. |
| * |
| * This library is free software; you can redistribute it and/or modify |
| * it under the terms and conditions of the GNU Lesser General Public |
| * License version 2.1 as published by the Free Software Foundation. |
| * |
| * This library 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 Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| * |
| */ |
| |
| #ifdef HAVE_CONFIG_H |
| #include <config.h> |
| #endif |
| |
| #include <errno.h> |
| #include <unistd.h> |
| #include <string.h> |
| #include <sys/ioctl.h> |
| |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <pthread.h> |
| #include <ctype.h> |
| |
| #include <netdb.h> |
| |
| #include "pacrunner.h" |
| #include "js.h" |
| |
| #include "duktape/duktape.h" |
| |
| struct pacrunner_duktape { |
| struct pacrunner_proxy *proxy; |
| pthread_mutex_t lock; |
| duk_context *dctx; |
| }; |
| |
| static duk_ret_t myipaddress(duk_context *dkctx) |
| { |
| struct pacrunner_duktape *ctx; |
| duk_memory_functions fns; |
| char address[NI_MAXHOST]; |
| |
| duk_get_memory_functions(dkctx, &fns); |
| ctx = fns.udata; |
| |
| if (__pacrunner_js_getipaddr(ctx->proxy, address, sizeof(address)) < 0) |
| duk_push_string(dkctx, NULL); |
| else |
| duk_push_string(dkctx, address); |
| |
| DBG("address %s", address); |
| |
| return 1; |
| } |
| |
| static duk_ret_t dnsresolve(duk_context *dkctx) |
| { |
| struct pacrunner_duktape *ctx; |
| const char *host = duk_require_string(dkctx, 0); |
| duk_memory_functions fns; |
| char address[NI_MAXHOST]; |
| |
| DBG("host %s", host); |
| |
| duk_get_memory_functions(dkctx, &fns); |
| ctx = fns.udata; |
| |
| address[0] = 0; |
| if (__pacrunner_js_resolve(ctx->proxy, host, address, |
| sizeof(address)) < 0) |
| duk_push_string(dkctx, NULL); |
| else |
| duk_push_string(dkctx, address); |
| |
| DBG("address %s", address); |
| |
| return 1; |
| } |
| |
| static int create_object(struct pacrunner_proxy *proxy) |
| { |
| struct pacrunner_duktape *ctx; |
| const char *script; |
| |
| script = (char *) pacrunner_proxy_get_script(proxy); |
| if (!script) { |
| pacrunner_error("no script\n"); |
| return 0; |
| } |
| |
| ctx = g_malloc0(sizeof(struct pacrunner_duktape)); |
| |
| ctx->proxy = proxy; |
| ctx->dctx = duk_create_heap(NULL, NULL, NULL, ctx, NULL); |
| if (!ctx->dctx) { |
| pacrunner_error("no headp\n"); |
| g_free(ctx); |
| return -ENOMEM; |
| } |
| duk_push_global_object(ctx->dctx); |
| |
| /* Register the C functions so the script can use them */ |
| duk_push_c_function(ctx->dctx, myipaddress, 0); |
| duk_put_prop_string(ctx->dctx, -2, "myIpAddress"); |
| |
| duk_push_c_function(ctx->dctx, dnsresolve, 1); |
| duk_put_prop_string(ctx->dctx, -2, "dnsResolve"); |
| |
| if (duk_peval_string_noresult(ctx->dctx, |
| __pacrunner_js_routines) != 0 || |
| duk_peval_string_noresult(ctx->dctx, script) != 0) { |
| pacrunner_error("Error: %s\n", |
| duk_safe_to_string(ctx->dctx, -1)); |
| duk_destroy_heap(ctx->dctx); |
| g_free(ctx); |
| return -EINVAL; |
| } |
| |
| if (pthread_mutex_init(&ctx->lock, NULL) != 0) { |
| pacrunner_error("Failed to init mutex lock\n"); |
| duk_destroy_heap(ctx->dctx); |
| g_free(ctx); |
| return -EIO; |
| } |
| |
| __pacrunner_proxy_set_jsctx(proxy, ctx); |
| pacrunner_error("done %p\n", ctx); |
| return 0; |
| } |
| |
| static int duktape_clear_proxy(struct pacrunner_proxy *proxy) |
| { |
| struct pacrunner_duktape *ctx = __pacrunner_proxy_get_jsctx(proxy); |
| |
| DBG("proxy %p ctx %p", proxy, ctx); |
| |
| if (!ctx) |
| return -EINVAL; |
| |
| duk_destroy_heap(ctx->dctx); |
| pthread_mutex_destroy(&ctx->lock); |
| |
| __pacrunner_proxy_set_jsctx(proxy, NULL); |
| return 0; |
| } |
| |
| static int duktape_set_proxy(struct pacrunner_proxy *proxy) |
| { |
| DBG("proxy %p", proxy); |
| |
| if (!proxy) |
| return 0; |
| |
| duktape_clear_proxy(proxy); |
| |
| return create_object(proxy); |
| } |
| |
| static char *duktape_execute(struct pacrunner_proxy *proxy, |
| const char *url, const char *host) |
| { |
| struct pacrunner_duktape *ctx = __pacrunner_proxy_get_jsctx(proxy); |
| char *result; |
| |
| DBG("proxy %p ctx %p url %s host %s", proxy, ctx, url, host); |
| |
| if (!ctx) |
| return NULL; |
| |
| pthread_mutex_lock(&ctx->lock); |
| |
| duk_get_prop_string(ctx->dctx, -1 /*index*/, "FindProxyForURL"); |
| |
| duk_push_string(ctx->dctx, url); |
| duk_push_string(ctx->dctx, host); |
| if (duk_pcall(ctx->dctx, 2 /*nargs*/) != 0) { |
| pacrunner_error("Error: %s\n", |
| duk_safe_to_string(ctx->dctx, -1)); |
| result = NULL; |
| } else { |
| result = strdup(duk_safe_to_string(ctx->dctx, -1)); |
| } |
| duk_pop(ctx->dctx); /* pop result/error */ |
| |
| if (result) { |
| DBG("the return string is: %s\n", result); |
| } |
| |
| pthread_mutex_unlock(&ctx->lock); |
| |
| return result; |
| } |
| |
| |
| static struct pacrunner_js_driver duktape_driver = { |
| .name = "duktape", |
| .priority = PACRUNNER_JS_PRIORITY_HIGH, |
| .set_proxy = duktape_set_proxy, |
| .clear_proxy = duktape_clear_proxy, |
| .execute = duktape_execute, |
| }; |
| |
| static int duktape_init(void) |
| { |
| DBG(""); |
| |
| return pacrunner_js_driver_register(&duktape_driver); |
| } |
| |
| |
| static void duktape_exit(void) |
| { |
| DBG(""); |
| |
| pacrunner_js_driver_unregister(&duktape_driver); |
| |
| duktape_set_proxy(NULL); |
| } |
| |
| PACRUNNER_PLUGIN_DEFINE(duktape, duktape_init, duktape_exit) |