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ruby/ruby.c

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36 KiB
C
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/**********************************************************************
ruby.c -
$Author$
created at: Tue Aug 10 12:47:31 JST 1993
Copyright (C) 1993-2007 Yukihiro Matsumoto
Copyright (C) 2000 Network Applied Communication Laboratory, Inc.
Copyright (C) 2000 Information-technology Promotion Agency, Japan
**********************************************************************/
#ifdef __CYGWIN__
#include <windows.h>
#include <sys/cygwin.h>
#endif
#include "ruby/ruby.h"
#include "ruby/encoding.h"
#include "eval_intern.h"
#include "dln.h"
#include <stdio.h>
#include <sys/types.h>
#include <ctype.h>
#ifdef __hpux
#include <sys/pstat.h>
#endif
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#if defined(HAVE_FCNTL_H)
#include <fcntl.h>
#elif defined(HAVE_SYS_FCNTL_H)
#include <sys/fcntl.h>
#endif
#ifdef HAVE_SYS_PARAM_H
# include <sys/param.h>
#endif
#ifndef MAXPATHLEN
# define MAXPATHLEN 1024
#endif
#include "ruby/util.h"
#ifndef HAVE_STDLIB_H
char *getenv();
#endif
VALUE rb_parser_get_yydebug(VALUE);
VALUE rb_parser_set_yydebug(VALUE, VALUE);
const char *ruby_get_inplace_mode(void);
void ruby_set_inplace_mode(const char *);
#define DISABLE_BIT(bit) (1U << disable_##bit)
enum disable_flag_bits {
disable_gems,
disable_rubyopt
};
#define DUMP_BIT(bit) (1U << dump_##bit)
enum dump_flag_bits {
dump_insns
};
struct cmdline_options {
int sflag, xflag;
int do_loop, do_print;
int do_check, do_line;
int do_split, do_search;
int usage;
int version;
int copyright;
unsigned int disable;
int verbose;
int yydebug;
unsigned int setids;
unsigned int dump;
const char *script;
VALUE script_name;
VALUE e_script;
struct {
struct {
VALUE name;
int index;
} enc;
} src, ext, intern;
VALUE req_list;
};
static void init_ids(struct cmdline_options *);
#define src_encoding_index GET_VM()->src_encoding_index
static struct cmdline_options *
cmdline_options_init(struct cmdline_options *opt)
{
MEMZERO(opt, *opt, 1);
init_ids(opt);
opt->src.enc.index = src_encoding_index;
return opt;
}
struct cmdline_arguments {
int argc;
char **argv;
struct cmdline_options *opt;
};
static NODE *load_file(VALUE, const char *, int, struct cmdline_options *);
static void forbid_setid(const char *, struct cmdline_options *);
#define forbid_setid(s) forbid_setid(s, opt)
static struct {
int argc;
char **argv;
#if !defined(PSTAT_SETCMD) && !defined(HAVE_SETPROCTITLE)
int len;
#endif
} origarg;
static void
usage(const char *name)
{
/* This message really ought to be max 23 lines.
* Removed -h because the user already knows that option. Others? */
static const char *const usage_msg[] = {
"-0[octal] specify record separator (\\0, if no argument)",
"-a autosplit mode with -n or -p (splits $_ into $F)",
"-c check syntax only",
"-Cdirectory cd to directory, before executing your script",
"-d set debugging flags (set $DEBUG to true)",
"-e 'command' one line of script. Several -e's allowed. Omit [programfile]",
"-Eencoding specifies the character encoding for the program codes",
"-Fpattern split() pattern for autosplit (-a)",
"-i[extension] edit ARGV files in place (make backup if extension supplied)",
"-Idirectory specify $LOAD_PATH directory (may be used more than once)",
"-l enable line ending processing",
"-n assume 'while gets(); ... end' loop around your script",
"-p assume loop like -n but print line also like sed",
"-rlibrary require the library, before executing your script",
"-s enable some switch parsing for switches after script name",
"-S look for the script using PATH environment variable",
"-T[level] turn on tainting checks",
"-v print version number, then turn on verbose mode",
"-w turn warnings on for your script",
"-W[level] set warning level; 0=silence, 1=medium, 2=verbose (default)",
"-x[directory] strip off text before #!ruby line and perhaps cd to directory",
"--copyright print the copyright",
"--version print the version",
NULL
};
const char *const *p = usage_msg;
printf("Usage: %s [switches] [--] [programfile] [arguments]\n", name);
while (*p)
printf(" %s\n", *p++);
}
VALUE rb_get_load_path(void);
#ifndef CharNext /* defined as CharNext[AW] on Windows. */
#define CharNext(p) ((p) + mblen(p, RUBY_MBCHAR_MAXSIZE))
#endif
#if defined DOSISH || defined __CYGWIN__
static inline void
translate_char(char *p, int from, int to)
{
while (*p) {
if ((unsigned char)*p == from)
*p = to;
p = CharNext(p);
}
}
#endif
#if defined _WIN32 || defined __CYGWIN__
static VALUE
rubylib_mangled_path(const char *s, unsigned int l)
{
static char *newp, *oldp;
static int newl, oldl, notfound;
char *ptr;
VALUE ret;
if (!newp && !notfound) {
newp = getenv("RUBYLIB_PREFIX");
if (newp) {
oldp = newp = strdup(newp);
while (*newp && !ISSPACE(*newp) && *newp != ';') {
newp = CharNext(newp); /* Skip digits. */
}
oldl = newp - oldp;
while (*newp && (ISSPACE(*newp) || *newp == ';')) {
newp = CharNext(newp); /* Skip whitespace. */
}
newl = strlen(newp);
if (newl == 0 || oldl == 0) {
rb_fatal("malformed RUBYLIB_PREFIX");
}
translate_char(newp, '\\', '/');
}
else {
notfound = 1;
}
}
if (!newp || l < oldl || STRNCASECMP(oldp, s, oldl) != 0) {
return rb_str_new(s, l);
}
ret = rb_str_new(0, l + newl - oldl);
ptr = RSTRING_PTR(ret);
memcpy(ptr, newp, newl);
memcpy(ptr + newl, s + oldl, l - oldl);
ptr[l + newl - oldl] = 0;
return ret;
}
static VALUE
rubylib_mangled_path2(const char *s)
{
return rubylib_mangled_path(s, strlen(s));
}
#else
#define rubylib_mangled_path rb_str_new
#define rubylib_mangled_path2 rb_str_new2
#endif
static void
push_include(const char *path, VALUE (*filter)(VALUE))
{
const char sep = PATH_SEP_CHAR;
const char *p, *s;
VALUE load_path = GET_VM()->load_path;
p = path;
while (*p) {
while (*p == sep)
p++;
if (!*p) break;
for (s = p; *s && *s != sep; s = CharNext(s));
rb_ary_push(load_path, (*filter)(rubylib_mangled_path(p, s - p)));
p = s;
}
}
#ifdef __CYGWIN__
static void
push_include_cygwin(const char *path, VALUE (*filter)(VALUE))
{
const char *p, *s;
char rubylib[FILENAME_MAX];
VALUE buf = 0;
p = path;
while (*p) {
unsigned int len;
while (*p == ';')
p++;
if (!*p) break;
for (s = p; *s && *s != ';'; s = CharNext(s));
len = s - p;
if (*s) {
if (!buf) {
buf = rb_str_new(p, len);
p = RSTRING_PTR(buf);
}
else {
rb_str_resize(buf, len);
p = strncpy(RSTRING_PTR(buf), p, len);
}
}
if (cygwin_conv_to_posix_path(p, rubylib) == 0)
p = rubylib;
push_include(p, filter);
if (!*s) break;
p = s + 1;
}
}
#define push_include push_include_cygwin
#endif
void
ruby_push_include(const char *path, VALUE (*filter)(VALUE))
{
if (path == 0)
return;
push_include(path, filter);
}
static VALUE
identical_path(VALUE path)
{
return path;
}
void
ruby_incpush(const char *path)
{
ruby_push_include(path, identical_path);
}
static VALUE
expand_include_path(VALUE path)
{
char *p = RSTRING_PTR(path);
if (!p)
return path;
if (*p == '.' && p[1] == '/')
return path;
return rb_file_expand_path(path, Qnil);
}
void
ruby_incpush_expand(const char *path)
{
ruby_push_include(path, expand_include_path);
}
#if defined DOSISH || defined __CYGWIN__
#define LOAD_RELATIVE 1
#endif
#if defined _WIN32 || defined __CYGWIN__
static HMODULE libruby;
BOOL WINAPI
DllMain(HINSTANCE dll, DWORD reason, LPVOID reserved)
{
if (reason == DLL_PROCESS_ATTACH)
libruby = dll;
return TRUE;
}
#endif
void
ruby_init_loadpath(void)
{
VALUE load_path;
#if defined LOAD_RELATIVE
char libpath[MAXPATHLEN + 1];
char *p;
int rest;
#if defined _WIN32 || defined __CYGWIN__
GetModuleFileName(libruby, libpath, sizeof libpath);
#elif defined(__EMX__)
_execname(libpath, sizeof(libpath) - 1);
#endif
libpath[sizeof(libpath) - 1] = '\0';
#if defined DOSISH
translate_char(libpath, '\\', '/');
#elif defined __CYGWIN__
{
char rubylib[FILENAME_MAX];
cygwin_conv_to_posix_path(libpath, rubylib);
strncpy(libpath, rubylib, sizeof(libpath));
}
#endif
p = strrchr(libpath, '/');
if (p) {
*p = 0;
if (p - libpath > 3 && !STRCASECMP(p - 4, "/bin")) {
p -= 4;
*p = 0;
}
}
else {
strcpy(libpath, ".");
p = libpath + 1;
}
rest = sizeof(libpath) - 1 - (p - libpath);
#define RUBY_RELATIVE(path) (strncpy(p, (path), rest), libpath)
#else
#define RUBY_RELATIVE(path) (path)
#endif
#define incpush(path) rb_ary_push(load_path, rubylib_mangled_path2(path))
load_path = GET_VM()->load_path;
if (rb_safe_level() == 0) {
ruby_incpush(getenv("RUBYLIB"));
}
#ifdef RUBY_SEARCH_PATH
incpush(RUBY_RELATIVE(RUBY_SEARCH_PATH));
#endif
incpush(RUBY_RELATIVE(RUBY_SITE_LIB2));
#ifdef RUBY_SITE_THIN_ARCHLIB
incpush(RUBY_RELATIVE(RUBY_SITE_THIN_ARCHLIB));
#endif
incpush(RUBY_RELATIVE(RUBY_SITE_ARCHLIB));
incpush(RUBY_RELATIVE(RUBY_SITE_LIB));
incpush(RUBY_RELATIVE(RUBY_VENDOR_LIB2));
#ifdef RUBY_VENDOR_THIN_ARCHLIB
incpush(RUBY_RELATIVE(RUBY_VENDOR_THIN_ARCHLIB));
#endif
incpush(RUBY_RELATIVE(RUBY_VENDOR_ARCHLIB));
incpush(RUBY_RELATIVE(RUBY_VENDOR_LIB));
incpush(RUBY_RELATIVE(RUBY_LIB));
#ifdef RUBY_THIN_ARCHLIB
incpush(RUBY_RELATIVE(RUBY_THIN_ARCHLIB));
#endif
incpush(RUBY_RELATIVE(RUBY_ARCHLIB));
if (rb_safe_level() == 0) {
incpush(".");
}
}
static void
add_modules(struct cmdline_options *opt, const char *mod)
{
VALUE list = opt->req_list;
if (!list) {
opt->req_list = list = rb_ary_new();
RBASIC(list)->klass = 0;
}
rb_ary_push(list, rb_obj_freeze(rb_str_new2(mod)));
}
extern void Init_ext(void);
extern VALUE rb_vm_top_self(void);
static void
require_libraries(struct cmdline_options *opt)
{
VALUE list = opt->req_list;
ID require;
Init_ext(); /* should be called here for some reason :-( */
CONST_ID(require, "require");
while (list && RARRAY_LEN(list) > 0) {
VALUE feature = rb_ary_shift(list);
rb_funcall2(rb_vm_top_self(), require, 1, &feature);
}
opt->req_list = 0;
}
static void
process_sflag(struct cmdline_options *opt)
{
if (opt->sflag) {
long n;
VALUE *args;
VALUE argv = rb_argv;
n = RARRAY_LEN(argv);
args = RARRAY_PTR(argv);
while (n > 0) {
VALUE v = *args++;
char *s = StringValuePtr(v);
char *p;
int hyphen = Qfalse;
if (s[0] != '-')
break;
n--;
if (s[1] == '-' && s[2] == '\0')
break;
v = Qtrue;
/* check if valid name before replacing - with _ */
for (p = s + 1; *p; p++) {
if (*p == '=') {
*p++ = '\0';
v = rb_str_new2(p);
break;
}
if (*p == '-') {
hyphen = Qtrue;
}
else if (*p != '_' && !ISALNUM(*p)) {
VALUE name_error[2];
name_error[0] =
rb_str_new2("invalid name for global variable - ");
if (!(p = strchr(p, '='))) {
rb_str_cat2(name_error[0], s);
}
else {
rb_str_cat(name_error[0], s, p - s);
}
name_error[1] = args[-1];
rb_exc_raise(rb_class_new_instance(2, name_error, rb_eNameError));
}
}
s[0] = '$';
if (hyphen) {
for (p = s + 1; *p; ++p) {
if (*p == '-')
*p = '_';
}
}
rb_gv_set(s, v);
}
n = RARRAY_LEN(argv) - n;
while (n--) {
rb_ary_shift(argv);
}
}
opt->sflag = 0;
}
NODE *rb_parser_append_print(VALUE, NODE *);
NODE *rb_parser_while_loop(VALUE, NODE *, int, int);
static int proc_options(int argc, char **argv, struct cmdline_options *opt);
static char *
moreswitches(const char *s, struct cmdline_options *opt)
{
int argc;
char *argv[3];
const char *p = s;
argc = 2;
argv[0] = argv[2] = 0;
while (*s && !ISSPACE(*s))
s++;
argv[1] = ALLOCA_N(char, s - p + 2);
argv[1][0] = '-';
strncpy(argv[1] + 1, p, s - p);
argv[1][s - p + 1] = '\0';
proc_options(argc, argv, opt);
while (*s && ISSPACE(*s))
s++;
return (char *)s;
}
#define NAME_MATCH_P(name, str, len) \
((len) < sizeof(name) && strncmp((str), name, (len)) == 0)
#define UNSET_WHEN(name, bit, str, len) \
if (NAME_MATCH_P(name, str, len)) { \
*(unsigned int *)arg &= ~(bit); \
return; \
}
#define SET_WHEN(name, bit, str, len) \
if (NAME_MATCH_P(name, str, len)) { \
*(unsigned int *)arg |= (bit); \
return; \
}
static void
enable_option(const char *str, int len, void *arg)
{
#define UNSET_WHEN_DISABLE(bit) UNSET_WHEN(#bit, DISABLE_BIT(bit), str, len)
UNSET_WHEN_DISABLE(gems);
UNSET_WHEN_DISABLE(rubyopt);
if (NAME_MATCH_P("all", str, len)) {
*(unsigned int *)arg = 0U;
return;
}
rb_warn("unknown argument for --enable: `%.*s'", len, str);
}
static void
disable_option(const char *str, int len, void *arg)
{
#define SET_WHEN_DISABLE(bit) SET_WHEN(#bit, DISABLE_BIT(bit), str, len)
SET_WHEN_DISABLE(gems);
SET_WHEN_DISABLE(rubyopt);
if (NAME_MATCH_P("all", str, len)) {
*(unsigned int *)arg = ~0U;
return;
}
rb_warn("unknown argument for --disable: `%.*s'", len, str);
}
static void
dump_option(const char *str, int len, void *arg)
{
#define SET_WHEN_DUMP(bit) SET_WHEN(#bit, DUMP_BIT(bit), str, len)
SET_WHEN_DUMP(insns);
rb_warn("don't know how to dump `%.*s', (insns)", len, str);
}
static void
set_internal_encoding_once(struct cmdline_options *opt, const char *e, int elen)
{
VALUE ename;
if (!elen) elen = strlen(e);
ename = rb_str_new(e, elen);
if (opt->intern.enc.name &&
rb_funcall(ename, rb_intern("casecmp"), 1, opt->intern.enc.name) != INT2FIX(0)) {
rb_raise(rb_eRuntimeError,
"default_intenal already set to %s", RSTRING_PTR(opt->intern.enc.name));
}
opt->intern.enc.name = ename;
}
static void
set_external_encoding_once(struct cmdline_options *opt, const char *e, int elen)
{
VALUE ename;
if (!elen) elen = strlen(e);
ename = rb_str_new(e, elen);
if (opt->ext.enc.name &&
rb_funcall(ename, rb_intern("casecmp"), 1, opt->ext.enc.name) != INT2FIX(0)) {
rb_raise(rb_eRuntimeError,
"default_external already set to %s", RSTRING_PTR(opt->ext.enc.name));
}
opt->ext.enc.name = ename;
}
static int
proc_options(int argc, char **argv, struct cmdline_options *opt)
{
int n, argc0 = argc;
const char *s;
if (argc == 0)
return 0;
for (argc--, argv++; argc > 0; argc--, argv++) {
if (argv[0][0] != '-' || !argv[0][1])
break;
s = argv[0] + 1;
reswitch:
switch (*s) {
case 'a':
opt->do_split = Qtrue;
s++;
goto reswitch;
case 'p':
opt->do_print = Qtrue;
/* through */
case 'n':
opt->do_loop = Qtrue;
s++;
goto reswitch;
case 'd':
ruby_debug = Qtrue;
ruby_verbose = Qtrue;
s++;
goto reswitch;
case 'y':
opt->yydebug = 1;
s++;
goto reswitch;
case 'v':
if (opt->verbose) {
s++;
goto reswitch;
}
ruby_show_version();
opt->verbose = 1;
case 'w':
ruby_verbose = Qtrue;
s++;
goto reswitch;
case 'W':
{
int numlen;
int v = 2; /* -W as -W2 */
if (*++s) {
v = scan_oct(s, 1, &numlen);
if (numlen == 0)
v = 1;
s += numlen;
}
switch (v) {
case 0:
ruby_verbose = Qnil;
break;
case 1:
ruby_verbose = Qfalse;
break;
default:
ruby_verbose = Qtrue;
break;
}
}
goto reswitch;
case 'c':
opt->do_check = Qtrue;
s++;
goto reswitch;
case 's':
forbid_setid("-s");
opt->sflag = 1;
s++;
goto reswitch;
case 'h':
usage(origarg.argv[0]);
rb_exit(EXIT_SUCCESS);
break;
case 'l':
opt->do_line = Qtrue;
rb_output_rs = rb_rs;
s++;
goto reswitch;
case 'S':
forbid_setid("-S");
opt->do_search = Qtrue;
s++;
goto reswitch;
case 'e':
forbid_setid("-e");
if (!*++s) {
s = argv[1];
argc--, argv++;
}
if (!s) {
rb_raise(rb_eRuntimeError, "no code specified for -e");
}
if (!opt->e_script) {
opt->e_script = rb_str_new(0, 0);
if (opt->script == 0)
opt->script = "-e";
}
rb_str_cat2(opt->e_script, s);
rb_str_cat2(opt->e_script, "\n");
break;
case 'r':
forbid_setid("-r");
if (*++s) {
add_modules(opt, s);
}
else if (argv[1]) {
add_modules(opt, argv[1]);
argc--, argv++;
}
break;
case 'i':
forbid_setid("-i");
ruby_set_inplace_mode(s + 1);
break;
case 'x':
opt->xflag = Qtrue;
s++;
if (*s && chdir(s) < 0) {
rb_fatal("Can't chdir to %s", s);
}
break;
case 'C':
case 'X':
s++;
if (!*s) {
s = argv[1];
argc--, argv++;
}
if (!s || !*s) {
rb_fatal("Can't chdir");
}
if (chdir(s) < 0) {
rb_fatal("Can't chdir to %s", s);
}
break;
case 'F':
if (*++s) {
rb_fs = rb_reg_new(s, strlen(s), 0);
}
break;
case 'E':
if (!*++s) goto next_encoding;
goto encoding;
case 'U':
set_internal_encoding_once(opt, "UTF-8", 0);
++s;
goto reswitch;
case 'K':
if (*++s) {
const char *enc_name = 0;
switch (*s) {
case 'E': case 'e':
enc_name = "EUC-JP";
break;
case 'S': case 's':
enc_name = "Windows-31J";
break;
case 'U': case 'u':
enc_name = "UTF-8";
break;
case 'N': case 'n': case 'A': case 'a':
enc_name = "ASCII-8BIT";
break;
}
if (enc_name) {
opt->src.enc.name = rb_str_new2(enc_name);
set_external_encoding_once(opt, enc_name, 0);
}
s++;
}
goto reswitch;
case 'T':
{
int numlen;
int v = 1;
if (*++s) {
v = scan_oct(s, 2, &numlen);
if (numlen == 0)
v = 1;
s += numlen;
}
rb_set_safe_level(v);
}
goto reswitch;
case 'I':
forbid_setid("-I");
if (*++s)
ruby_incpush_expand(s);
else if (argv[1]) {
ruby_incpush_expand(argv[1]);
argc--, argv++;
}
break;
case '0':
{
int numlen;
int v;
char c;
v = scan_oct(s, 4, &numlen);
s += numlen;
if (v > 0377)
rb_rs = Qnil;
else if (v == 0 && numlen >= 2) {
rb_rs = rb_str_new2("\n\n");
}
else {
c = v & 0xff;
rb_rs = rb_str_new(&c, 1);
}
}
goto reswitch;
case '-':
if (!s[1] || (s[1] == '\r' && !s[2])) {
argc--, argv++;
goto switch_end;
}
s++;
if (strcmp("copyright", s) == 0)
opt->copyright = 1;
else if (strcmp("debug", s) == 0) {
ruby_debug = Qtrue;
ruby_verbose = Qtrue;
}
else if (strncmp("enable", s, n = 6) == 0 &&
(!s[n] || s[n] == '-' || s[n] == '=')) {
if ((s += n + 1)[-1] ? !*s : (!--argc || !(s = *++argv))) {
rb_raise(rb_eRuntimeError, "missing argument for --enable");
}
ruby_each_words(s, enable_option, &opt->disable);
}
else if (strncmp("disable", s, n = 7) == 0 &&
(!s[n] || s[n] == '-' || s[n] == '=')) {
if ((s += n + 1)[-1] ? !*s : (!--argc || !(s = *++argv))) {
rb_raise(rb_eRuntimeError, "missing argument for --disable");
}
ruby_each_words(s, disable_option, &opt->disable);
}
else if (strncmp("encoding", s, n = 8) == 0 && (!s[n] || s[n] == '=')) {
char *p;
s += n;
if (!*s++) {
next_encoding:
if (!--argc || !(s = *++argv)) {
rb_raise(rb_eRuntimeError, "missing argument for --encoding");
}
}
encoding:
p = strchr(s, ':');
if (p) {
if (p > s)
set_external_encoding_once(opt, s, p-s);
if (*++p)
set_internal_encoding_once(opt, p, 0);
}
else
set_external_encoding_once(opt, s, 0);
}
else if (strcmp("version", s) == 0)
opt->version = 1;
else if (strcmp("verbose", s) == 0) {
opt->verbose = 1;
ruby_verbose = Qtrue;
}
else if (strcmp("yydebug", s) == 0)
opt->yydebug = 1;
else if (strncmp("dump", s, n = 4) == 0 && (!s[n] || s[n] == '=')) {
if (!(s += n + 1)[-1] && (!--argc || !(s = *++argv)) && *s != '-') break;
ruby_each_words(s, dump_option, &opt->dump);
}
else if (strcmp("help", s) == 0) {
usage(origarg.argv[0]);
rb_exit(EXIT_SUCCESS);
}
else {
rb_raise(rb_eRuntimeError,
"invalid option --%s (-h will show valid options)", s);
}
break;
case '\r':
if (!s[1])
break;
default:
{
if (ISPRINT(*s)) {
rb_raise(rb_eRuntimeError,
"invalid option -%c (-h will show valid options)",
(int)(unsigned char)*s);
}
else {
rb_raise(rb_eRuntimeError,
"invalid option -\\x%02X (-h will show valid options)",
(int)(unsigned char)*s);
}
}
goto switch_end;
case 0:
break;
}
}
switch_end:
return argc0 - argc;
}
void Init_prelude(void);
static void
ruby_init_gems(int enable)
{
if (enable) rb_define_module("Gem");
Init_prelude();
}
static int
opt_enc_index(VALUE enc_name)
{
const char *s = RSTRING_PTR(enc_name);
int i = rb_enc_find_index(s);
if (i < 0) {
rb_raise(rb_eRuntimeError, "unknown encoding name - %s", s);
}
else if (rb_enc_dummy_p(rb_enc_from_index(i))) {
rb_raise(rb_eRuntimeError, "dummy encoding is not acceptable - %s ", s);
}
return i;
}
#define rb_progname (GET_VM()->progname)
VALUE rb_argv0;
static VALUE
process_options(VALUE arg)
{
struct cmdline_arguments *argp = (struct cmdline_arguments *)arg;
struct cmdline_options *opt = argp->opt;
int argc = argp->argc;
char **argv = argp->argv;
NODE *tree = 0;
VALUE parser;
VALUE iseq;
VALUE args;
rb_encoding *enc, *lenc;
const char *s;
char fbuf[MAXPATHLEN];
int i = proc_options(argc, argv, opt);
int safe;
argc -= i;
argv += i;
if (!(opt->disable & DISABLE_BIT(rubyopt)) &&
rb_safe_level() == 0 && (s = getenv("RUBYOPT"))) {
VALUE src_enc_name = opt->src.enc.name;
VALUE ext_enc_name = opt->ext.enc.name;
VALUE int_enc_name = opt->intern.enc.name;
opt->src.enc.name = opt->ext.enc.name = opt->intern.enc.name = 0;
while (ISSPACE(*s))
s++;
if (*s == 'T' || (*s == '-' && *(s + 1) == 'T')) {
int numlen;
int v = 1;
if (*s != 'T')
++s;
if (*++s) {
v = scan_oct(s, 2, &numlen);
if (numlen == 0)
v = 1;
}
rb_set_safe_level(v);
}
else {
while (s && *s) {
if (*s == '-') {
s++;
if (ISSPACE(*s)) {
do {
s++;
} while (ISSPACE(*s));
continue;
}
}
if (!*s)
break;
if (!strchr("EIdvwWrKU", *s))
rb_raise(rb_eRuntimeError,
"invalid switch in RUBYOPT: -%c", *s);
s = moreswitches(s, opt);
}
}
if (src_enc_name)
opt->src.enc.name = src_enc_name;
if (ext_enc_name)
opt->ext.enc.name = ext_enc_name;
if (int_enc_name)
opt->intern.enc.name = int_enc_name;
}
if (opt->version) {
ruby_show_version();
return Qtrue;
}
if (opt->copyright) {
ruby_show_copyright();
}
if (rb_safe_level() >= 4) {
OBJ_TAINT(rb_argv);
OBJ_TAINT(GET_VM()->load_path);
}
if (!opt->e_script) {
if (argc == 0) { /* no more args */
if (opt->verbose)
return Qtrue;
opt->script = "-";
}
else {
opt->script = argv[0];
if (opt->script[0] == '\0') {
opt->script = "-";
}
else if (opt->do_search) {
char *path = getenv("RUBYPATH");
opt->script = 0;
if (path) {
opt->script = dln_find_file_r(argv[0], path, fbuf, sizeof(fbuf));
}
if (!opt->script) {
opt->script = dln_find_file_r(argv[0], getenv(PATH_ENV), fbuf, sizeof(fbuf));
}
if (!opt->script)
opt->script = argv[0];
}
argc--;
argv++;
}
}
ruby_script(opt->script);
#if defined DOSISH || defined __CYGWIN__
translate_char(RSTRING_PTR(rb_progname), '\\', '/');
#endif
opt->script_name = rb_progname;
opt->script = RSTRING_PTR(opt->script_name);
safe = rb_safe_level();
rb_set_safe_level_force(0);
ruby_set_argv(argc, argv);
process_sflag(opt);
ruby_init_loadpath();
ruby_init_gems(!(opt->disable & DISABLE_BIT(gems)));
lenc = rb_locale_encoding();
rb_enc_associate(rb_progname, lenc);
opt->script_name = rb_str_new4(rb_progname);
for (i = 0, args = rb_argv; i < RARRAY_LEN(args); i++) {
rb_enc_associate(RARRAY_PTR(args)[i], lenc);
}
parser = rb_parser_new();
if (opt->yydebug) rb_parser_set_yydebug(parser, Qtrue);
if (opt->ext.enc.name != 0) {
opt->ext.enc.index = opt_enc_index(opt->ext.enc.name);
}
if (opt->intern.enc.name != 0) {
opt->intern.enc.index = opt_enc_index(opt->intern.enc.name);
}
if (opt->src.enc.name != 0) {
opt->src.enc.index = opt_enc_index(opt->src.enc.name);
src_encoding_index = opt->src.enc.index;
}
if (opt->ext.enc.index >= 0) {
enc = rb_enc_from_index(opt->ext.enc.index);
}
else {
enc = lenc;
}
rb_enc_set_default_external(rb_enc_from_encoding(enc));
if (opt->intern.enc.index >= 0) {
enc = rb_enc_from_index(opt->intern.enc.index);
rb_enc_set_default_internal(rb_enc_from_encoding(enc));
opt->intern.enc.index = -1;
}
rb_set_safe_level_force(safe);
if (opt->e_script) {
rb_encoding *eenc;
if (opt->src.enc.index >= 0) {
eenc = rb_enc_from_index(opt->src.enc.index);
}
else {
eenc = lenc;
}
rb_enc_associate(opt->e_script, eenc);
require_libraries(opt);
tree = rb_parser_compile_string(parser, opt->script, opt->e_script, 1);
}
else {
if (opt->script[0] == '-' && !opt->script[1]) {
forbid_setid("program input from stdin");
}
tree = load_file(parser, opt->script, 1, opt);
}
if (opt->intern.enc.index >= 0) {
/* Set in the shebang line */
enc = rb_enc_from_index(opt->intern.enc.index);
rb_enc_set_default_internal(rb_enc_from_encoding(enc));
}
else
/* Freeze default_internal */
rb_enc_set_default_internal(Qnil);
if (!tree) return Qfalse;
process_sflag(opt);
opt->xflag = 0;
if (rb_safe_level() >= 4) {
FL_UNSET(rb_argv, FL_TAINT);
FL_UNSET(GET_VM()->load_path, FL_TAINT);
}
if (opt->do_check) {
printf("Syntax OK\n");
return Qtrue;
}
if (opt->do_print) {
tree = rb_parser_append_print(parser, tree);
}
if (opt->do_loop) {
tree = rb_parser_while_loop(parser, tree, opt->do_line, opt->do_split);
}
iseq = rb_iseq_new_top(tree, rb_str_new2("<main>"),
opt->script_name, Qfalse);
if (opt->dump & DUMP_BIT(insns)) {
rb_io_write(rb_stdout, ruby_iseq_disasm(iseq));
rb_io_flush(rb_stdout);
return Qtrue;
}
return iseq;
}
static NODE *
load_file(VALUE parser, const char *fname, int script, struct cmdline_options *opt)
{
extern VALUE rb_stdin;
VALUE f;
int line_start = 1;
NODE *tree = 0;
rb_encoding *enc;
if (!fname)
rb_load_fail(fname);
if (strcmp(fname, "-") == 0) {
f = rb_stdin;
}
else {
int fd, mode = O_RDONLY;
#if defined DOSISH || defined __CYGWIN__
{
const char *ext = strrchr(fname, '.');
if (ext && STRCASECMP(ext, ".exe") == 0)
mode |= O_BINARY;
}
#endif
if ((fd = open(fname, mode)) < 0) {
rb_load_fail(fname);
}
f = rb_io_fdopen(fd, mode, fname);
}
if (script) {
VALUE c = 1; /* something not nil */
VALUE line;
char *p;
int no_src_enc = !opt->src.enc.name;
int no_ext_enc = !opt->ext.enc.name;
int no_int_enc = !opt->intern.enc.name;
enc = rb_usascii_encoding();
rb_funcall(f, rb_intern("set_encoding"), 1, rb_enc_from_encoding(enc));
if (opt->xflag) {
forbid_setid("-x");
opt->xflag = Qfalse;
while (!NIL_P(line = rb_io_gets(f))) {
line_start++;
if (RSTRING_LEN(line) > 2
&& RSTRING_PTR(line)[0] == '#'
&& RSTRING_PTR(line)[1] == '!') {
if ((p = strstr(RSTRING_PTR(line), "ruby")) != 0) {
goto start_read;
}
}
}
rb_raise(rb_eLoadError, "no Ruby script found in input");
}
c = rb_io_getbyte(f);
if (c == INT2FIX('#')) {
c = rb_io_getbyte(f);
if (c == INT2FIX('!')) {
line = rb_io_gets(f);
if (NIL_P(line))
return 0;
if ((p = strstr(RSTRING_PTR(line), "ruby")) == 0) {
/* not ruby script, kick the program */
char **argv;
char *path;
char *pend = RSTRING_PTR(line) + RSTRING_LEN(line);
p = RSTRING_PTR(line); /* skip `#!' */
if (pend[-1] == '\n')
pend--; /* chomp line */
if (pend[-1] == '\r')
pend--;
*pend = '\0';
while (p < pend && ISSPACE(*p))
p++;
path = p; /* interpreter path */
while (p < pend && !ISSPACE(*p))
p++;
*p++ = '\0';
if (p < pend) {
argv = ALLOCA_N(char *, origarg.argc + 3);
argv[1] = p;
MEMCPY(argv + 2, origarg.argv + 1, char *, origarg.argc);
}
else {
argv = origarg.argv;
}
argv[0] = path;
execv(path, argv);
rb_fatal("Can't exec %s", path);
}
start_read:
p += 4;
RSTRING_PTR(line)[RSTRING_LEN(line) - 1] = '\0';
if (RSTRING_PTR(line)[RSTRING_LEN(line) - 2] == '\r')
RSTRING_PTR(line)[RSTRING_LEN(line) - 2] = '\0';
if ((p = strstr(p, " -")) != 0) {
p++; /* skip space before `-' */
while (*p == '-') {
p = moreswitches(p + 1, opt);
}
}
/* push back shebang for pragma may exist in next line */
rb_io_ungetbyte(f, rb_str_new2("!\n"));
}
else if (!NIL_P(c)) {
rb_io_ungetbyte(f, c);
}
rb_io_ungetbyte(f, INT2FIX('#'));
if (no_src_enc && opt->src.enc.name) {
opt->src.enc.index = opt_enc_index(opt->src.enc.name);
src_encoding_index = opt->src.enc.index;
}
if (no_ext_enc && opt->ext.enc.name) {
opt->ext.enc.index = opt_enc_index(opt->ext.enc.name);
}
if (no_int_enc && opt->intern.enc.name) {
opt->intern.enc.index = opt_enc_index(opt->intern.enc.name);
}
}
else if (!NIL_P(c)) {
rb_io_ungetbyte(f, c);
}
require_libraries(opt); /* Why here? unnatural */
}
if (opt->src.enc.index >= 0) {
enc = rb_enc_from_index(opt->src.enc.index);
}
else if (f == rb_stdin) {
enc = rb_locale_encoding();
}
else {
enc = rb_usascii_encoding();
}
rb_funcall(f, rb_intern("set_encoding"), 1, rb_enc_from_encoding(enc));
tree = (NODE *)rb_parser_compile_file(parser, fname, f, line_start);
rb_funcall(f, rb_intern("set_encoding"), 1, rb_parser_encoding(parser));
if (script && rb_parser_end_seen_p(parser)) {
rb_define_global_const("DATA", f);
}
else if (f != rb_stdin) {
rb_io_close(f);
}
return tree;
}
void *
rb_load_file(const char *fname)
{
struct cmdline_options opt;
return load_file(rb_parser_new(), fname, 0, cmdline_options_init(&opt));
}
#if !defined(PSTAT_SETCMD) && !defined(HAVE_SETPROCTITLE)
#if !defined(_WIN32) && !(defined(HAVE_SETENV) && defined(HAVE_UNSETENV))
#define USE_ENVSPACE_FOR_ARG0
#endif
#ifdef USE_ENVSPACE_FOR_ARG0
extern char **environ;
#endif
static int
get_arglen(int argc, char **argv)
{
char *s = argv[0];
int i;
if (!argc) return 0;
s += strlen(s);
/* See if all the arguments are contiguous in memory */
for (i = 1; i < argc; i++) {
if (argv[i] == s + 1) {
s++;
s += strlen(s); /* this one is ok too */
}
else {
break;
}
}
#if defined(USE_ENVSPACE_FOR_ARG0)
if (environ && (s == environ[0])) {
s += strlen(s);
for (i = 1; environ[i]; i++) {
if (environ[i] == s + 1) {
s++;
s += strlen(s); /* this one is ok too */
}
}
ruby_setenv("", NULL); /* duplicate environ vars */
}
#endif
return s - argv[0];
}
#endif
static void
set_arg0(VALUE val, ID id)
{
char *s;
long i;
if (origarg.argv == 0)
rb_raise(rb_eRuntimeError, "$0 not initialized");
StringValue(val);
s = RSTRING_PTR(val);
i = RSTRING_LEN(val);
#if defined(PSTAT_SETCMD)
if (i > PST_CLEN) {
union pstun un;
char buf[PST_CLEN + 1]; /* PST_CLEN is 64 (HP-UX 11.23) */
strncpy(buf, s, PST_CLEN);
buf[PST_CLEN] = '\0';
un.pst_command = buf;
pstat(PSTAT_SETCMD, un, PST_CLEN, 0, 0);
}
else {
union pstun un;
un.pst_command = s;
pstat(PSTAT_SETCMD, un, i, 0, 0);
}
#elif defined(HAVE_SETPROCTITLE)
setproctitle("%.*s", (int)i, s);
#else
if (i >= origarg.len) {
i = origarg.len;
}
memcpy(origarg.argv[0], s, i);
{
int j;
char *t = origarg.argv[0] + i;
*t = '\0';
if (i + 1 < origarg.len) memset(t + 1, ' ', origarg.len - i - 1);
for (j = 1; j < origarg.argc; j++) {
origarg.argv[j] = t;
}
}
#endif
rb_progname = rb_obj_freeze(rb_tainted_str_new(s, i));
}
void
ruby_script(const char *name)
{
if (name) {
rb_progname = rb_obj_freeze(rb_tainted_str_new2(name));
}
}
static void
init_ids(struct cmdline_options *opt)
{
rb_uid_t uid = getuid();
rb_uid_t euid = geteuid();
rb_gid_t gid = getgid();
rb_gid_t egid = getegid();
if (uid != euid) opt->setids |= 1;
if (egid != gid) opt->setids |= 2;
if (uid && opt->setids) {
rb_set_safe_level(1);
}
}
#undef forbid_setid
static void
forbid_setid(const char *s, struct cmdline_options *opt)
{
if (opt->setids & 1)
rb_raise(rb_eSecurityError, "no %s allowed while running setuid", s);
if (opt->setids & 2)
rb_raise(rb_eSecurityError, "no %s allowed while running setgid", s);
if (rb_safe_level() > 0)
rb_raise(rb_eSecurityError, "no %s allowed in tainted mode", s);
}
static void
verbose_setter(VALUE val, ID id, void *data)
{
VALUE *variable = data;
*variable = RTEST(val) ? Qtrue : val;
}
static VALUE
opt_W_getter(ID id, void *data)
{
VALUE *variable = data;
switch (*variable) {
case Qnil:
return INT2FIX(0);
case Qfalse:
return INT2FIX(1);
case Qtrue:
return INT2FIX(2);
}
return Qnil; /* not reached */
}
void
ruby_prog_init(void)
{
rb_define_hooked_variable("$VERBOSE", &ruby_verbose, 0, verbose_setter);
rb_define_hooked_variable("$-v", &ruby_verbose, 0, verbose_setter);
rb_define_hooked_variable("$-w", &ruby_verbose, 0, verbose_setter);
rb_define_hooked_variable("$-W", &ruby_verbose, opt_W_getter, 0);
rb_define_variable("$DEBUG", &ruby_debug);
rb_define_variable("$-d", &ruby_debug);
rb_define_hooked_variable("$0", &rb_progname, 0, set_arg0);
rb_define_hooked_variable("$PROGRAM_NAME", &rb_progname, 0, set_arg0);
rb_define_global_const("ARGV", rb_argv);
}
void
ruby_set_argv(int argc, char **argv)
{
int i;
VALUE av = rb_argv;
#if defined(USE_DLN_A_OUT)
if (origarg.argv)
dln_argv0 = origarg.argv[0];
else
dln_argv0 = argv[0];
#endif
rb_ary_clear(av);
for (i = 0; i < argc; i++) {
VALUE arg = rb_tainted_str_new2(argv[i]);
OBJ_FREEZE(arg);
rb_ary_push(av, arg);
}
}
static VALUE
false_value(void)
{
return Qfalse;
}
static VALUE
true_value(void)
{
return Qtrue;
}
#define rb_define_readonly_boolean(name, val) \
rb_define_virtual_variable((name), (val) ? true_value : false_value, 0)
void *
ruby_process_options(int argc, char **argv)
{
struct cmdline_arguments args;
struct cmdline_options opt;
NODE *tree;
ruby_script(argv[0]); /* for the time being */
rb_argv0 = rb_str_new4(rb_progname);
rb_gc_register_mark_object(rb_argv0);
args.argc = argc;
args.argv = argv;
args.opt = cmdline_options_init(&opt);
opt.ext.enc.index = -1;
opt.intern.enc.index = -1;
tree = (NODE *)rb_vm_call_cfunc(rb_vm_top_self(),
process_options, (VALUE)&args,
0, rb_progname);
rb_define_readonly_boolean("$-p", opt.do_print);
rb_define_readonly_boolean("$-l", opt.do_line);
rb_define_readonly_boolean("$-a", opt.do_split);
return tree;
}
void
ruby_sysinit(int *argc, char ***argv)
{
#if defined(__APPLE__) && (defined(__MACH__) || defined(__DARWIN__))
int i, n = *argc, len = 0;
char **v1 = *argv, **v2, *p;
for (i = 0; i < n; ++i) {
len += strlen(v1[i]) + 1;
}
v2 = malloc((n + 1)* sizeof(char*) + len);
p = (char *)&v2[n + 1];
for (i = 0; i < n; ++i) {
int l = strlen(v1[i]);
memcpy(p, v1[i], l + 1);
v2[i] = p;
p += l + 1;
}
v2[n] = 0;
*argv = v2;
#elif defined(_WIN32)
void rb_w32_sysinit(int *argc, char ***argv);
rb_w32_sysinit(argc, argv);
#endif
origarg.argc = *argc;
origarg.argv = *argv;
#if !defined(PSTAT_SETCMD) && !defined(HAVE_SETPROCTITLE)
origarg.len = get_arglen(origarg.argc, origarg.argv);
#endif
#if defined(USE_DLN_A_OUT)
dln_argv0 = origarg.argv[0];
#endif
}
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