kitty/linux-launcher.c

172 lines
5.5 KiB
C

/*
* linux-launcher.c
* Copyright (C) 2017 Kovid Goyal <kovid at kovidgoyal.net>
*
* Distributed under terms of the GPL3 license.
*/
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <libgen.h>
#include <string.h>
#include <errno.h>
#include <stdbool.h>
#ifdef __APPLE__
#include <mach-o/dyld.h>
#include <sys/syslimits.h>
#else
#include <limits.h>
#endif
#include <Python.h>
#include <wchar.h>
#define MIN(x, y) ((x) < (y)) ? (x) : (y)
#define MAX_ARGC 1024
#ifdef FOR_BUNDLE
static int run_embedded(const char* exe_dir_, int argc, wchar_t **argv) {
int num;
Py_NoSiteFlag = 1;
Py_FrozenFlag = 1;
Py_IgnoreEnvironmentFlag = 1;
Py_DontWriteBytecodeFlag = 1;
Py_NoUserSiteDirectory = 1;
Py_IsolatedFlag = 1;
Py_SetProgramName(L"kitty");
int ret = 1;
wchar_t *exe_dir = Py_DecodeLocale(exe_dir_, NULL);
if (exe_dir == NULL) { fprintf(stderr, "Fatal error: cannot decode exe_dir\n"); return 1; }
PyObject *ed = PyUnicode_FromWideChar(exe_dir, -1);
wchar_t stdlib[PATH_MAX+1] = {0};
#ifdef __APPLE__
const char *python_relpath = "../Resources/Python/lib";
#else
const char *python_relpath = "../lib";
#endif
num = swprintf(stdlib, PATH_MAX, L"%ls/%s/python%s:%ls/%s/python%s/lib-dynload:%ls/%s/python%s/site-packages",
exe_dir, python_relpath, PYVER,
exe_dir, python_relpath, PYVER,
exe_dir, python_relpath, PYVER
);
if (num < 0 || num >= PATH_MAX) { fprintf(stderr, "Failed to create path to python stdlib\n"); return 1; }
Py_SetPath(stdlib);
#ifdef __APPLE__
num = swprintf(stdlib, PATH_MAX, L"%ls/../Frameworks/kitty", exe_dir);
#else
num = swprintf(stdlib, PATH_MAX, L"%ls/../lib/kitty", exe_dir);
#endif
PyMem_RawFree(exe_dir);
if (num < 0 || num >= PATH_MAX) { fprintf(stderr, "Failed to create path to kitty lib\n"); return 1; }
Py_Initialize();
PySys_SetArgvEx(argc - 1, argv + 1, 0);
PySys_SetObject("frozen", Py_True);
if (ed) { PySys_SetObject("bundle_exe_dir", ed); Py_CLEAR(ed); }
PyObject *kitty = PyUnicode_FromWideChar(stdlib, -1);
if (kitty == NULL) { fprintf(stderr, "Failed to allocate python kitty lib object\n"); goto end; }
PyObject *runpy = PyImport_ImportModule("runpy");
if (runpy == NULL) { PyErr_Print(); fprintf(stderr, "Unable to import runpy\n"); Py_CLEAR(kitty); goto end; }
PyObject *run_name = PyUnicode_FromString("__main__");
if (run_name == NULL) { fprintf(stderr, "Failed to allocate run_name\n"); goto end; }
PyObject *res = PyObject_CallMethod(runpy, "run_path", "OOO", kitty, Py_None, run_name);
Py_CLEAR(runpy); Py_CLEAR(kitty); Py_CLEAR(run_name);
if (res == NULL) PyErr_Print();
else { ret = 0; Py_CLEAR(res); }
end:
if (Py_FinalizeEx() < 0) ret = 120;
return ret;
}
#else
static int run_embedded(const char* exe_dir, int argc, wchar_t **argv) {
return Py_Main(argc, argv);
}
#endif
#ifdef __APPLE__
static inline bool
read_exe_path(char *exe, size_t buf_sz) {
(void)buf_sz;
uint32_t size = PATH_MAX;
char apple[PATH_MAX+1] = {0};
if (_NSGetExecutablePath(apple, &size) != 0) { fprintf(stderr, "Failed to get path to executable\n"); return false; }
if (realpath(apple, exe) == NULL) { fprintf(stderr, "realpath() failed on the executable's path\n"); return false; }
return true;
}
#elif defined(__FreeBSD__)
#include <sys/param.h>
#include <sys/sysctl.h>
static inline bool
read_exe_path(char *exe, size_t buf_sz) {
int name[] = { CTL_KERN, KERN_PROC, KERN_PROC_PATHNAME, -1 };
size_t length = buf_sz;
int error = sysctl(name, 4, exe, &length, NULL, 0);
if (error < 0 || length <= 1) {
fprintf(stderr, "failed to get path to executable, sysctl() failed\n");
return false;
}
return true;
}
#elif defined(__NetBSD__)
static inline bool
read_exe_path(char *exe, size_t buf_sz) {
if (realpath("/proc/curproc/exe", exe) == NULL) { fprintf(stderr, "Failed to read /proc/self/exe\n"); return false; }
return true;
}
#else
static inline bool
read_exe_path(char *exe, size_t buf_sz) {
if (realpath("/proc/self/exe", exe) == NULL) { fprintf(stderr, "Failed to read /proc/self/exe\n"); return false; }
return true;
}
#endif
int main(int argc, char *argv[]) {
char exe[PATH_MAX+1] = {0};
if (!read_exe_path(exe, sizeof(exe))) return 1;
char *exe_dir = dirname(exe);
int num, num_args, i, ret=0;
char lib[PATH_MAX+1] = {0};
char *final_argv[MAX_ARGC + 1] = {0};
wchar_t *argvw[MAX_ARGC + 1] = {0};
#ifdef WITH_PROFILER
num = snprintf(lib, PATH_MAX, "%s%s", exe_dir, "/");
#else
#ifdef FOR_LAUNCHER
num = snprintf(lib, PATH_MAX, "%s%s", exe_dir, "/../Frameworks/kitty");
#else
num = snprintf(lib, PATH_MAX, "%s%s%s%s", exe_dir, "/../", LIB_DIR_NAME, "/kitty");
#endif
#endif
if (num < 0 || num >= PATH_MAX) { fprintf(stderr, "Failed to create path to kitty lib\n"); return 1; }
final_argv[0] = exe;
final_argv[1] = lib;
for (i = 1, num_args=2; i < argc && i + 1 <= MAX_ARGC; i++) {
final_argv[i+1] = argv[i];
num_args++;
}
#if PY_VERSION_HEX >= 0x03070000
// Always use UTF-8 mode, see https://github.com/kovidgoyal/kitty/issues/924
Py_UTF8Mode = 1;
#endif
for (i = 0; i < num_args; i++) {
argvw[i] = Py_DecodeLocale(final_argv[i], NULL);
if (argvw[i] == NULL) {
fprintf(stderr, "Fatal error: cannot decode argv[%d]\n", i);
ret = 1; goto end;
}
}
ret = run_embedded(exe_dir, num_args, argvw);
end:
for (i = 0; i < num_args; i++) { if(argvw[i]) PyMem_RawFree(argvw[i]); }
return ret;
}