| // Copyright 2015 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| // The entry point for all Mac Chromium processes, including the outer app |
| // bundle (browser) and helper app (renderer, plugin, and friends). |
| |
| #include <dlfcn.h> |
| #include <errno.h> |
| #include <libgen.h> |
| #include <mach-o/dyld.h> |
| #include <stddef.h> |
| #include <stdint.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <unistd.h> |
| |
| #include "chrome/common/chrome_version.h" |
| |
| typedef int (*ChromeMainPtr)(int, char**); |
| |
| __attribute__((visibility("default"))) int main(int argc, char* argv[]) { |
| #if defined(HELPER_EXECUTABLE) |
| const char* const rel_path = |
| "../../../" PRODUCT_FULLNAME_STRING |
| " Framework.framework/" PRODUCT_FULLNAME_STRING " Framework"; |
| #else |
| const char* const rel_path = |
| "../Versions/" CHROME_VERSION_STRING "/" PRODUCT_FULLNAME_STRING |
| " Framework.framework/" PRODUCT_FULLNAME_STRING " Framework"; |
| #endif // defined(HELPER_EXECUTABLE) |
| |
| uint32_t exec_path_size = 0; |
| int rv = _NSGetExecutablePath(NULL, &exec_path_size); |
| if (rv != -1) { |
| fprintf(stderr, "_NSGetExecutablePath: get length failed\n"); |
| abort(); |
| } |
| |
| char* exec_path = malloc(exec_path_size); |
| if (!exec_path) { |
| fprintf(stderr, "malloc %u: %s\n", exec_path_size, strerror(errno)); |
| abort(); |
| } |
| |
| rv = _NSGetExecutablePath(exec_path, &exec_path_size); |
| if (rv != 0) { |
| fprintf(stderr, "_NSGetExecutablePath: get path failed\n"); |
| abort(); |
| } |
| |
| // Slice off the last part of the main executable path, and append the |
| // version framework information. |
| const char* parent_dir = dirname(exec_path); |
| if (!parent_dir) { |
| fprintf(stderr, "dirname %s: %s\n", exec_path, strerror(errno)); |
| abort(); |
| } |
| free(exec_path); |
| |
| const size_t parent_path_len = strlen(parent_dir); |
| const size_t rel_path_len = strlen(rel_path); |
| // 2 accounts for a trailing NUL byte and the '/' in the middle of the paths. |
| const size_t framework_path_size = parent_path_len + rel_path_len + 2; |
| char* framework_path = malloc(framework_path_size); |
| if (!framework_path) { |
| fprintf(stderr, "malloc %zu: %s\n", framework_path_size, strerror(errno)); |
| abort(); |
| } |
| snprintf(framework_path, framework_path_size, "%s/%s", parent_dir, rel_path); |
| |
| void* library = dlopen(framework_path, RTLD_LAZY | RTLD_LOCAL | RTLD_FIRST); |
| if (!library) { |
| fprintf(stderr, "dlopen %s: %s\n", framework_path, dlerror()); |
| abort(); |
| } |
| free(framework_path); |
| |
| const ChromeMainPtr chrome_main = dlsym(library, "ChromeMain"); |
| if (!chrome_main) { |
| fprintf(stderr, "dlsym ChromeMain: %s\n", dlerror()); |
| abort(); |
| } |
| rv = chrome_main(argc, argv); |
| |
| // exit, don't return from main, to avoid the apparent removal of main from |
| // stack backtraces under tail call optimization. |
| exit(rv); |
| } |