/********************************************************************** 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 #include #endif #include "internal.h" #include "ruby/thread.h" #include "eval_intern.h" #include "dln.h" #include #include #include #ifdef __hpux #include #endif #if defined(LOAD_RELATIVE) && defined(HAVE_DLADDR) #include #endif #ifdef HAVE_UNISTD_H #include #endif #if defined(HAVE_FCNTL_H) #include #elif defined(HAVE_SYS_FCNTL_H) #include #endif #ifdef HAVE_SYS_PARAM_H # include #endif #ifndef MAXPATHLEN # define MAXPATHLEN 1024 #endif #ifndef O_ACCMODE # define O_ACCMODE (O_RDONLY | O_WRONLY | O_RDWR) #endif #include "ruby/util.h" #ifndef HAVE_STDLIB_H char *getenv(); #endif #ifndef DISABLE_RUBYGEMS # define DISABLE_RUBYGEMS 0 #endif #if DISABLE_RUBYGEMS #define DEFAULT_RUBYGEMS_ENABLED "disabled" #else #define DEFAULT_RUBYGEMS_ENABLED "enabled" #endif #define COMMA , #define FEATURE_BIT(bit) (1U << feature_##bit) #define EACH_FEATURES(X, SEP) \ X(gems) \ SEP \ X(did_you_mean) \ SEP \ X(rubyopt) \ SEP \ X(frozen_string_literal) \ /* END OF FEATURES */ #define EACH_DEBUG_FEATURES(X, SEP) \ X(frozen_string_literal) \ /* END OF DEBUG FEATURES */ #define AMBIGUOUS_FEATURE_NAMES 0 /* no ambiguous feature names now */ #define DEFINE_FEATURE(bit) feature_##bit #define DEFINE_DEBUG_FEATURE(bit) feature_debug_##bit enum feature_flag_bits { EACH_FEATURES(DEFINE_FEATURE, COMMA), feature_debug_flag_first, feature_debug_flag_begin = feature_debug_flag_first - 1, EACH_DEBUG_FEATURES(DEFINE_DEBUG_FEATURE, COMMA), feature_flag_count }; #define DEBUG_BIT(bit) (1U << feature_debug_##bit) #define DUMP_BIT(bit) (1U << dump_##bit) #define DEFINE_DUMP(bit) dump_##bit #define EACH_DUMPS(X, SEP) \ X(version) \ SEP \ X(copyright) \ SEP \ X(usage) \ SEP \ X(help) \ SEP \ X(yydebug) \ SEP \ X(syntax) \ SEP \ X(parsetree) \ SEP \ X(parsetree_with_comment) \ SEP \ X(insns) \ /* END OF DUMPS */ enum dump_flag_bits { dump_version_v, EACH_DUMPS(DEFINE_DUMP, COMMA), dump_exit_bits = (DUMP_BIT(yydebug) | DUMP_BIT(syntax) | DUMP_BIT(parsetree) | DUMP_BIT(parsetree_with_comment) | DUMP_BIT(insns)) }; typedef struct ruby_cmdline_options ruby_cmdline_options_t; struct ruby_cmdline_options { int sflag, xflag; int do_loop, do_print; int do_line, do_split; int do_search; unsigned int features; int verbose; int safe_level; 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; unsigned int warning: 1; }; static void init_ids(ruby_cmdline_options_t *); #define src_encoding_index GET_VM()->src_encoding_index enum { COMPILATION_FEATURES = ( 0 | FEATURE_BIT(frozen_string_literal) | FEATURE_BIT(debug_frozen_string_literal) ), DEFAULT_FEATURES = ( (FEATURE_BIT(debug_flag_first)-1) #if DISABLE_RUBYGEMS & ~FEATURE_BIT(gems) #endif & ~FEATURE_BIT(frozen_string_literal) ) }; static ruby_cmdline_options_t * cmdline_options_init(ruby_cmdline_options_t *opt) { MEMZERO(opt, *opt, 1); init_ids(opt); opt->src.enc.index = src_encoding_index; opt->ext.enc.index = -1; opt->intern.enc.index = -1; opt->features = DEFAULT_FEATURES; return opt; } static NODE *load_file(VALUE, VALUE, int, ruby_cmdline_options_t *); static void forbid_setid(const char *, ruby_cmdline_options_t *); #define forbid_setid(s) forbid_setid((s), opt) static struct { int argc; char **argv; } origarg; static void show_usage_line(const char *str, unsigned int namelen, unsigned int secondlen, int help) { const unsigned int w = 16; const int wrap = help && namelen + secondlen - 2 > w; printf(" %.*s%-*.*s%-*s%s\n", namelen-1, str, (wrap ? 0 : w - namelen + 1), (help ? secondlen-1 : 0), str + namelen, (wrap ? w + 3 : 0), (wrap ? "\n" : ""), str + namelen + secondlen); } static void usage(const char *name, int help) { /* This message really ought to be max 23 lines. * Removed -h because the user already knows that option. Others? */ struct message { const char *str; unsigned short namelen, secondlen; }; #define M(shortopt, longopt, desc) { \ shortopt " " longopt " " desc, \ (unsigned short)sizeof(shortopt), \ (unsigned short)sizeof(longopt), \ } static const struct message usage_msg[] = { M("-0[octal]", "", "specify record separator (\\0, if no argument)"), M("-a", "", "autosplit mode with -n or -p (splits $_ into $F)"), M("-c", "", "check syntax only"), M("-Cdirectory", "", "cd to directory before executing your script"), M("-d", ", --debug", "set debugging flags (set $DEBUG to true)"), M("-e 'command'", "", "one line of script. Several -e's allowed. Omit [programfile]"), M("-Eex[:in]", ", --encoding=ex[:in]", "specify the default external and internal character encodings"), M("-Fpattern", "", "split() pattern for autosplit (-a)"), M("-i[extension]", "", "edit ARGV files in place (make backup if extension supplied)"), M("-Idirectory", "", "specify $LOAD_PATH directory (may be used more than once)"), M("-l", "", "enable line ending processing"), M("-n", "", "assume 'while gets(); ... end' loop around your script"), M("-p", "", "assume loop like -n but print line also like sed"), M("-rlibrary", "", "require the library before executing your script"), M("-s", "", "enable some switch parsing for switches after script name"), M("-S", "", "look for the script using PATH environment variable"), M("-T[level=1]", "", "turn on tainting checks"), M("-v", ", --verbose", "print version number, then turn on verbose mode"), M("-w", "", "turn warnings on for your script"), M("-W[level=2]", "", "set warning level; 0=silence, 1=medium, 2=verbose"), M("-x[directory]", "", "strip off text before #!ruby line and perhaps cd to directory"), M("-h", "", "show this message, --help for more info"), }; static const struct message help_msg[] = { M("--copyright", "", "print the copyright"), M("--enable=feature[,...]", ", --disable=feature[,...]", "enable or disable features"), M("--external-encoding=encoding", ", --internal-encoding=encoding", "specify the default external or internal character encoding"), M("--version", "", "print the version"), M("--help", "", "show this message, -h for short message"), }; static const struct message features[] = { M("gems", "", "rubygems (default: "DEFAULT_RUBYGEMS_ENABLED")"), M("did_you_mean", "", "did_you_mean (default: "DEFAULT_RUBYGEMS_ENABLED")"), M("rubyopt", "", "RUBYOPT environment variable (default: enabled)"), M("frozen-string-literal", "", "freeze all string literals (default: disabled)"), }; int i; const int num = numberof(usage_msg) - (help ? 1 : 0); #define SHOW(m) show_usage_line((m).str, (m).namelen, (m).secondlen, help) printf("Usage: %s [switches] [--] [programfile] [arguments]\n", name); for (i = 0; i < num; ++i) SHOW(usage_msg[i]); if (!help) return; for (i = 0; i < numberof(help_msg); ++i) SHOW(help_msg[i]); puts("Features:"); for (i = 0; i < numberof(features); ++i) SHOW(features[i]); } #define rubylib_path_new rb_str_new 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_path_new(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); } } #ifdef HAVE_CYGWIN_CONV_PATH #define CONV_TO_POSIX_PATH(p, lib) \ cygwin_conv_path(CCP_WIN_A_TO_POSIX|CCP_RELATIVE, (p), (lib), sizeof(lib)) #else # error no cygwin_conv_path #endif if (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; } static VALUE locale_path(VALUE path) { rb_enc_associate(path, rb_locale_encoding()); return path; } void ruby_incpush(const char *path) { ruby_push_include(path, locale_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); } #undef UTF8_PATH #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; } HANDLE rb_libruby_handle(void) { return libruby; } static inline void translit_char_bin(char *p, int from, int to) { while (*p) { if ((unsigned char)*p == from) *p = to; p++; } } #endif #ifdef _WIN32 # define UTF8_PATH 1 #endif #ifndef UTF8_PATH # define UTF8_PATH 0 #endif #if UTF8_PATH # define IF_UTF8_PATH(t, f) t #else # define IF_UTF8_PATH(t, f) f #endif #if UTF8_PATH static VALUE str_conv_enc(VALUE str, rb_encoding *from, rb_encoding *to) { return rb_str_conv_enc_opts(str, from, to, ECONV_UNDEF_REPLACE|ECONV_INVALID_REPLACE, Qnil); } #endif void ruby_init_loadpath_safe(int safe_level); void ruby_init_loadpath(void) { ruby_init_loadpath_safe(0); } #if defined(LOAD_RELATIVE) && defined(HAVE_DLADDR) static VALUE dladdr_path(const void* addr) { Dl_info dli; VALUE fname, path; if (!dladdr(addr, &dli)) { return rb_str_new(0, 0); } #ifdef __linux__ else if (dli.dli_fname == origarg.argv[0]) { fname = rb_str_new_cstr("/proc/self/exe"); path = rb_readlink(fname, NULL); } #endif else { fname = rb_str_new_cstr(dli.dli_fname); path = rb_realpath_internal(Qnil, fname, 1); } rb_str_resize(fname, 0); return path; } #endif #define INITIAL_LOAD_PATH_MARK rb_intern_const("@gem_prelude_index") void ruby_init_loadpath_safe(int safe_level) { VALUE load_path; ID id_initial_load_path_mark; const char *paths = ruby_initial_load_paths; #if defined LOAD_RELATIVE # if defined HAVE_DLADDR || defined __CYGWIN__ || defined _WIN32 # define VARIABLE_LIBPATH 1 # else # define VARIABLE_LIBPATH 0 # endif # if VARIABLE_LIBPATH char *libpath; VALUE sopath; # else char libpath[MAXPATHLEN + 1]; # endif size_t baselen; char *p; #if defined _WIN32 || defined __CYGWIN__ { DWORD len = RSTRING_EMBED_LEN_MAX, ret, i; VALUE wsopath = rb_str_new(0, len*sizeof(WCHAR)); WCHAR *wlibpath; while (wlibpath = (WCHAR *)RSTRING_PTR(wsopath), ret = GetModuleFileNameW(libruby, wlibpath, len), (ret == len)) { rb_str_modify_expand(wsopath, len*sizeof(WCHAR)); rb_str_set_len(wsopath, (len += len)*sizeof(WCHAR)); } if (!ret || ret > len) rb_fatal("failed to get module file name"); for (len = ret, i = 0; i < len; ++i) { if (wlibpath[i] == L'\\') { wlibpath[i] = L'/'; ret = i+1; /* chop after the last separator */ } } len = WideCharToMultiByte(CP_UTF8, 0, wlibpath, ret, NULL, 0, NULL, NULL); sopath = rb_utf8_str_new(0, len); libpath = RSTRING_PTR(sopath); WideCharToMultiByte(CP_UTF8, 0, wlibpath, ret, libpath, len, NULL, NULL); rb_str_resize(wsopath, 0); } #elif defined(HAVE_DLADDR) sopath = dladdr_path((void *)(VALUE)expand_include_path); libpath = RSTRING_PTR(sopath); #endif #if !VARIABLE_LIBPATH libpath[sizeof(libpath) - 1] = '\0'; #endif #if defined DOSISH && !defined _WIN32 translit_char(libpath, '\\', '/'); #elif defined __CYGWIN__ { const int win_to_posix = CCP_WIN_A_TO_POSIX | CCP_RELATIVE; size_t newsize = cygwin_conv_path(win_to_posix, libpath, 0, 0); if (newsize > 0) { VALUE rubylib = rb_str_new(0, newsize); p = RSTRING_PTR(rubylib); if (cygwin_conv_path(win_to_posix, libpath, p, newsize) == 0) { rb_str_resize(sopath, 0); sopath = rubylib; libpath = p; } } } #endif p = strrchr(libpath, '/'); if (p) { static const char bindir[] = "/bin"; #ifdef LIBDIR_BASENAME static const char libdir[] = "/"LIBDIR_BASENAME; #else static const char libdir[] = "/lib"; #endif const ptrdiff_t bindir_len = (ptrdiff_t)sizeof(bindir) - 1; const ptrdiff_t libdir_len = (ptrdiff_t)sizeof(libdir) - 1; #ifdef ENABLE_MULTIARCH char *p2 = NULL; multiarch: #endif if (p - libpath >= bindir_len && !STRNCASECMP(p - bindir_len, bindir, bindir_len)) { p -= bindir_len; } else if (p - libpath >= libdir_len && !strncmp(p - libdir_len, libdir, libdir_len)) { p -= libdir_len; } #ifdef ENABLE_MULTIARCH else if (p2) { p = p2; } else { p2 = p; p = rb_enc_path_last_separator(libpath, p, rb_ascii8bit_encoding()); if (p) goto multiarch; p = p2; } #endif #if !VARIABLE_LIBPATH *p = 0; #endif } #if !VARIABLE_LIBPATH else { strlcpy(libpath, ".", sizeof(libpath)); p = libpath + 1; } baselen = p - libpath; #define PREFIX_PATH() rb_str_new(libpath, baselen) #else baselen = p - libpath; rb_str_resize(sopath, baselen); libpath = RSTRING_PTR(sopath); #define PREFIX_PATH() sopath #endif #define BASEPATH() rb_str_buf_cat(rb_str_buf_new(baselen+len), libpath, baselen) #define RUBY_RELATIVE(path, len) rb_str_buf_cat(BASEPATH(), (path), (len)) #else const size_t exec_prefix_len = strlen(ruby_exec_prefix); #define RUBY_RELATIVE(path, len) rubylib_path_new((path), (len)) #define PREFIX_PATH() RUBY_RELATIVE(ruby_exec_prefix, exec_prefix_len) #endif load_path = GET_VM()->load_path; if (safe_level == 0) { ruby_push_include(getenv("RUBYLIB"), identical_path); } id_initial_load_path_mark = INITIAL_LOAD_PATH_MARK; while (*paths) { size_t len = strlen(paths); VALUE path = RUBY_RELATIVE(paths, len); rb_ivar_set(path, id_initial_load_path_mark, path); rb_ary_push(load_path, path); paths += len + 1; } rb_const_set(rb_cObject, rb_intern_const("TMP_RUBY_PREFIX"), rb_obj_freeze(PREFIX_PATH())); } static void add_modules(VALUE *req_list, const char *mod) { VALUE list = *req_list; VALUE feature; if (!list) { *req_list = list = rb_ary_new(); RBASIC_CLEAR_CLASS(list); } feature = rb_str_new2(mod); RBASIC_CLEAR_CLASS(feature); rb_ary_push(list, feature); } static void require_libraries(VALUE *req_list) { VALUE list = *req_list; VALUE self = rb_vm_top_self(); ID require; rb_encoding *extenc = rb_default_external_encoding(); CONST_ID(require, "require"); while (list && RARRAY_LEN(list) > 0) { VALUE feature = rb_ary_shift(list); rb_enc_associate(feature, extenc); RBASIC_SET_CLASS_RAW(feature, rb_cString); OBJ_FREEZE(feature); rb_funcallv(self, require, 1, &feature); } *req_list = 0; } static const struct rb_block* toplevel_context(rb_binding_t *bind) { return &bind->block; } static void process_sflag(int *sflag) { if (*sflag > 0) { long n; const VALUE *args; VALUE argv = rb_argv; n = RARRAY_LEN(argv); args = RARRAY_CONST_PTR(argv); while (n > 0) { VALUE v = *args++; char *s = StringValuePtr(v); char *p; int hyphen = FALSE; 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 = TRUE; } 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); } *sflag = -1; } } static long proc_options(long argc, char **argv, ruby_cmdline_options_t *opt, int envopt); static void moreswitches(const char *s, ruby_cmdline_options_t *opt, int envopt) { long argc, i, len; char **argv, *p; const char *ap = 0; VALUE argstr, argary; while (ISSPACE(*s)) s++; if (!*s) return; argstr = rb_str_tmp_new((len = strlen(s)) + 2); argary = rb_str_tmp_new(0); p = RSTRING_PTR(argstr); *p++ = ' '; memcpy(p, s, len + 1); ap = 0; rb_str_cat(argary, (char *)&ap, sizeof(ap)); while (*p) { ap = p; rb_str_cat(argary, (char *)&ap, sizeof(ap)); while (*p && !ISSPACE(*p)) ++p; if (!*p) break; *p++ = '\0'; while (ISSPACE(*p)) ++p; } argc = RSTRING_LEN(argary) / sizeof(ap); ap = 0; rb_str_cat(argary, (char *)&ap, sizeof(ap)); argv = (char **)RSTRING_PTR(argary); while ((i = proc_options(argc, argv, opt, envopt)) > 1 && (argc -= i) > 0) { argv += i; if (**argv != '-') { *--*argv = '-'; } if ((*argv)[1]) { ++argc; --argv; } } /* get rid of GC */ rb_str_resize(argary, 0); rb_str_resize(argstr, 0); } static int name_match_p(const char *name, const char *str, size_t len) { if (len == 0) return 0; do { while (TOLOWER(*str) == *name) { if (!--len || !*++str) return 1; ++name; } if (*str != '-' && *str != '_') return 0; while (ISALNUM(*name)) name++; if (*name != '-' && *name != '_') return 0; ++name; ++str; } while (len > 0); return !*name; } #define NAME_MATCH_P(name, str, len) \ ((len) < (int)sizeof(name) && name_match_p((name), (str), (len))) #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; \ } #define LITERAL_NAME_ELEMENT(name) #name static void feature_option(const char *str, int len, void *arg, const unsigned int enable) { static const char list[] = EACH_FEATURES(LITERAL_NAME_ELEMENT, ", "); unsigned int *argp = arg; unsigned int mask = ~0U; #if AMBIGUOUS_FEATURE_NAMES unsigned int set = 0U; int matched = 0; #define SET_FEATURE(bit) \ if (NAME_MATCH_P(#bit, str, len)) {set |= mask = FEATURE_BIT(bit); ++matched;} #else #define SET_FEATURE(bit) \ if (NAME_MATCH_P(#bit, str, len)) {mask = FEATURE_BIT(bit); goto found;} #endif EACH_FEATURES(SET_FEATURE, ;); if (NAME_MATCH_P("all", str, len)) { found: *argp = (*argp & ~mask) | (mask & enable); return; } #if AMBIGUOUS_FEATURE_NAMES if (matched == 1) goto found; if (matched > 1) { VALUE mesg = rb_sprintf("ambiguous feature: `%.*s' (", len, str); #define ADD_FEATURE_NAME(bit) \ if (FEATURE_BIT(bit) & set) { \ rb_str_cat_cstr(mesg, #bit); \ if (--matched) rb_str_cat_cstr(mesg, ", "); \ } EACH_FEATURES(ADD_FEATURE_NAME, ;); rb_str_cat_cstr(mesg, ")"); rb_exc_raise(rb_exc_new_str(rb_eRuntimeError, mesg)); #undef ADD_FEATURE_NAME } #endif rb_warn("unknown argument for --%s: `%.*s'", enable ? "enable" : "disable", len, str); rb_warn("features are [%.*s].", (int)strlen(list), list); } static void enable_option(const char *str, int len, void *arg) { feature_option(str, len, arg, ~0U); } static void disable_option(const char *str, int len, void *arg) { feature_option(str, len, arg, 0U); } static void debug_option(const char *str, int len, void *arg) { static const char list[] = EACH_DEBUG_FEATURES(LITERAL_NAME_ELEMENT, ", "); #define SET_WHEN_DEBUG(bit) SET_WHEN(#bit, DEBUG_BIT(bit), str, len) EACH_DEBUG_FEATURES(SET_WHEN_DEBUG, ;); rb_warn("unknown argument for --debug: `%.*s'", len, str); rb_warn("debug features are [%.*s].", (int)strlen(list), list); } static void dump_option(const char *str, int len, void *arg) { static const char list[] = EACH_DUMPS(LITERAL_NAME_ELEMENT, ", "); #define SET_WHEN_DUMP(bit) SET_WHEN(#bit, DUMP_BIT(bit), str, len) EACH_DUMPS(SET_WHEN_DUMP, ;); rb_warn("don't know how to dump `%.*s',", len, str); rb_warn("but only [%.*s].", (int)strlen(list), list); } static void set_option_encoding_once(const char *type, VALUE *name, const char *e, long elen) { VALUE ename; if (!elen) elen = strlen(e); ename = rb_str_new(e, elen); if (*name && rb_funcall(ename, rb_intern("casecmp"), 1, *name) != INT2FIX(0)) { rb_raise(rb_eRuntimeError, "%s already set to %"PRIsVALUE, type, *name); } *name = ename; } #define set_internal_encoding_once(opt, e, elen) \ set_option_encoding_once("default_internal", &(opt)->intern.enc.name, (e), (elen)) #define set_external_encoding_once(opt, e, elen) \ set_option_encoding_once("default_external", &(opt)->ext.enc.name, (e), (elen)) #define set_source_encoding_once(opt, e, elen) \ set_option_encoding_once("source", &(opt)->src.enc.name, (e), (elen)) static long proc_options(long argc, char **argv, ruby_cmdline_options_t *opt, int envopt) { long n, argc0 = argc; const char *s; int warning = opt->warning; if (argc == 0) return 0; for (argc--, argv++; argc > 0; argc--, argv++) { const char *const arg = argv[0]; if (!arg || arg[0] != '-' || !arg[1]) break; s = arg + 1; reswitch: switch (*s) { case 'a': if (envopt) goto noenvopt; opt->do_split = TRUE; s++; goto reswitch; case 'p': if (envopt) goto noenvopt; opt->do_print = TRUE; /* through */ case 'n': if (envopt) goto noenvopt; opt->do_loop = TRUE; s++; goto reswitch; case 'd': ruby_debug = Qtrue; ruby_verbose = Qtrue; s++; goto reswitch; case 'y': if (envopt) goto noenvopt; opt->dump |= DUMP_BIT(yydebug); s++; goto reswitch; case 'v': if (opt->verbose) { s++; goto reswitch; } opt->dump |= DUMP_BIT(version_v); opt->verbose = 1; case 'w': if (!opt->warning) { warning = 1; ruby_verbose = Qtrue; } s++; goto reswitch; case 'W': { size_t numlen; int v = 2; /* -W as -W2 */ if (*++s) { v = scan_oct(s, 1, &numlen); if (numlen == 0) v = 1; s += numlen; } if (!opt->warning) { switch (v) { case 0: ruby_verbose = Qnil; break; case 1: ruby_verbose = Qfalse; break; default: ruby_verbose = Qtrue; break; } } warning = 1; } goto reswitch; case 'c': if (envopt) goto noenvopt; opt->dump |= DUMP_BIT(syntax); s++; goto reswitch; case 's': if (envopt) goto noenvopt; forbid_setid("-s"); if (!opt->sflag) opt->sflag = 1; s++; goto reswitch; case 'h': if (envopt) goto noenvopt; opt->dump |= DUMP_BIT(usage); goto switch_end; case 'l': if (envopt) goto noenvopt; opt->do_line = TRUE; rb_output_rs = rb_rs; s++; goto reswitch; case 'S': if (envopt) goto noenvopt; forbid_setid("-S"); opt->do_search = TRUE; s++; goto reswitch; case 'e': if (envopt) goto noenvopt; forbid_setid("-e"); if (!*++s) { if (!--argc) rb_raise(rb_eRuntimeError, "no code specified for -e"); s = *++argv; } 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->req_list, s); } else if (argc > 1) { add_modules(&opt->req_list, argv[1]); argc--, argv++; } break; case 'i': if (envopt) goto noenvopt; forbid_setid("-i"); ruby_set_inplace_mode(s + 1); break; case 'x': if (envopt) goto noenvopt; opt->xflag = TRUE; s++; if (*s && chdir(s) < 0) { rb_fatal("Can't chdir to %s", s); } break; case 'C': case 'X': if (envopt) goto noenvopt; if (!*++s && (!--argc || !(s = *++argv) || !*s)) { rb_fatal("Can't chdir"); } if (chdir(s) < 0) { rb_fatal("Can't chdir to %s", s); } break; case 'F': if (envopt) goto noenvopt; if (*++s) { rb_fs = rb_reg_new(s, strlen(s), 0); } break; case 'E': if (!*++s && (!--argc || !(s = *++argv))) { rb_raise(rb_eRuntimeError, "missing argument for -E"); } 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); if (!opt->ext.enc.name) opt->ext.enc.name = opt->src.enc.name; } s++; } goto reswitch; case 'T': { size_t numlen; int v = 1; if (*++s) { v = scan_oct(s, 2, &numlen); if (numlen == 0) v = 1; s += numlen; } if (v > opt->safe_level) opt->safe_level = v; } goto reswitch; case 'I': forbid_setid("-I"); if (*++s) ruby_incpush_expand(s); else if (argc > 1) { ruby_incpush_expand(argv[1]); argc--, argv++; } break; case '0': if (envopt) goto noenvopt; { size_t 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++; # define is_option_end(c, allow_hyphen) \ (!(c) || ((allow_hyphen) && (c) == '-') || (c) == '=') # define check_envopt(name, allow_envopt) \ (((allow_envopt) || !envopt) ? (void)0 : \ rb_raise(rb_eRuntimeError, "invalid switch in RUBYOPT: --" name)) # define need_argument(name, s, needs_arg, next_arg) \ ((*(s) ? !*++(s) : (next_arg) && (!argc || !((s) = argv[1]) || (--argc, ++argv, 0))) && (needs_arg) ? \ rb_raise(rb_eRuntimeError, "missing argument for --" name) \ : (void)0) # define is_option_with_arg(name, allow_hyphen, allow_envopt) \ is_option_with_optarg(name, allow_hyphen, allow_envopt, Qtrue, Qtrue) # define is_option_with_optarg(name, allow_hyphen, allow_envopt, needs_arg, next_arg) \ (strncmp((name), s, n = sizeof(name) - 1) == 0 && is_option_end(s[n], (allow_hyphen)) ? \ (check_envopt(name, (allow_envopt)), s += n, \ need_argument(name, s, needs_arg, next_arg), 1) : 0) if (strcmp("copyright", s) == 0) { if (envopt) goto noenvopt_long; opt->dump |= DUMP_BIT(copyright); } else if (is_option_with_optarg("debug", Qtrue, Qtrue, Qfalse, Qfalse)) { if (s && *s) { ruby_each_words(s, debug_option, &opt->features); } else { ruby_debug = Qtrue; ruby_verbose = Qtrue; } } else if (is_option_with_arg("enable", Qtrue, Qtrue)) { ruby_each_words(s, enable_option, &opt->features); } else if (is_option_with_arg("disable", Qtrue, Qtrue)) { ruby_each_words(s, disable_option, &opt->features); } else if (is_option_with_arg("encoding", Qfalse, Qtrue)) { char *p; encoding: do { # define set_encoding_part(type) \ if (!(p = strchr(s, ':'))) { \ set_##type##_encoding_once(opt, s, 0); \ break; \ } \ else if (p > s) { \ set_##type##_encoding_once(opt, s, p-s); \ } set_encoding_part(external); if (!*(s = ++p)) break; set_encoding_part(internal); if (!*(s = ++p)) break; #if defined ALLOW_DEFAULT_SOURCE_ENCODING && ALLOW_DEFAULT_SOURCE_ENCODING set_encoding_part(source); if (!*(s = ++p)) break; #endif rb_raise(rb_eRuntimeError, "extra argument for %s: %s", (arg[1] == '-' ? "--encoding" : "-E"), s); # undef set_encoding_part } while (0); } else if (is_option_with_arg("internal-encoding", Qfalse, Qtrue)) { set_internal_encoding_once(opt, s, 0); } else if (is_option_with_arg("external-encoding", Qfalse, Qtrue)) { set_external_encoding_once(opt, s, 0); } #if defined ALLOW_DEFAULT_SOURCE_ENCODING && ALLOW_DEFAULT_SOURCE_ENCODING else if (is_option_with_arg("source-encoding", Qfalse, Qtrue)) { set_source_encoding_once(opt, s, 0); } #endif else if (strcmp("version", s) == 0) { if (envopt) goto noenvopt_long; opt->dump |= DUMP_BIT(version); } else if (strcmp("verbose", s) == 0) { opt->verbose = 1; ruby_verbose = Qtrue; } else if (strcmp("yydebug", s) == 0) { if (envopt) goto noenvopt_long; opt->dump |= DUMP_BIT(yydebug); } else if (is_option_with_arg("dump", Qfalse, Qfalse)) { ruby_each_words(s, dump_option, &opt->dump); } else if (strcmp("help", s) == 0) { if (envopt) goto noenvopt_long; opt->dump |= DUMP_BIT(help); goto switch_end; } 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; noenvopt: /* "EIdvwWrKU" only */ rb_raise(rb_eRuntimeError, "invalid switch in RUBYOPT: -%c", *s); break; noenvopt_long: rb_raise(rb_eRuntimeError, "invalid switch in RUBYOPT: --%s", s); break; case 0: break; # undef is_option_end # undef check_envopt # undef need_argument # undef is_option_with_arg # undef is_option_with_optarg } } switch_end: if (warning) opt->warning = warning; return argc0 - argc; } static void ruby_init_prelude(void) { Init_prelude(); rb_const_remove(rb_cObject, rb_intern_const("TMP_RUBY_PREFIX")); } 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) #define rb_orig_progname (GET_VM()->orig_progname) VALUE rb_argv0; 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) static VALUE uscore_get(void) { VALUE line; line = rb_lastline_get(); if (!RB_TYPE_P(line, T_STRING)) { rb_raise(rb_eTypeError, "$_ value need to be String (%s given)", NIL_P(line) ? "nil" : rb_obj_classname(line)); } return line; } /* * call-seq: * sub(pattern, replacement) -> $_ * sub(pattern) {|...| block } -> $_ * * Equivalent to $_.sub(args), except that * $_ will be updated if substitution occurs. * Available only when -p/-n command line option specified. */ static VALUE rb_f_sub(int argc, VALUE *argv) { VALUE str = rb_funcall_passing_block(uscore_get(), rb_intern("sub"), argc, argv); rb_lastline_set(str); return str; } /* * call-seq: * gsub(pattern, replacement) -> $_ * gsub(pattern) {|...| block } -> $_ * * Equivalent to $_.gsub..., except that $_ * will be updated if substitution occurs. * Available only when -p/-n command line option specified. * */ static VALUE rb_f_gsub(int argc, VALUE *argv) { VALUE str = rb_funcall_passing_block(uscore_get(), rb_intern("gsub"), argc, argv); rb_lastline_set(str); return str; } /* * call-seq: * chop -> $_ * * Equivalent to ($_.dup).chop!, except nil * is never returned. See String#chop!. * Available only when -p/-n command line option specified. * */ static VALUE rb_f_chop(void) { VALUE str = rb_funcall_passing_block(uscore_get(), rb_intern("chop"), 0, 0); rb_lastline_set(str); return str; } /* * call-seq: * chomp -> $_ * chomp(string) -> $_ * * Equivalent to $_ = $_.chomp(string). See * String#chomp. * Available only when -p/-n command line option specified. * */ static VALUE rb_f_chomp(int argc, VALUE *argv) { VALUE str = rb_funcall_passing_block(uscore_get(), rb_intern("chomp"), argc, argv); rb_lastline_set(str); return str; } static VALUE process_options(int argc, char **argv, ruby_cmdline_options_t *opt) { NODE *tree = 0; VALUE parser; const rb_iseq_t *iseq; rb_encoding *enc, *lenc; #if UTF8_PATH rb_encoding *uenc, *ienc = 0; #endif const char *s; char fbuf[MAXPATHLEN]; int i = (int)proc_options(argc, argv, opt, 0); rb_binding_t *toplevel_binding; const struct rb_block *base_block; unsigned int dump = opt->dump & dump_exit_bits; argc -= i; argv += i; if (opt->dump & (DUMP_BIT(usage)|DUMP_BIT(help))) { usage(origarg.argv[0], (opt->dump & DUMP_BIT(help))); return Qtrue; } if ((opt->features & FEATURE_BIT(rubyopt)) && opt->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; moreswitches(s, opt, 1); 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->src.enc.name) rb_warning("-K is specified; it is for 1.8 compatibility and may cause odd behavior"); if (opt->dump & (DUMP_BIT(version) | DUMP_BIT(version_v))) { ruby_show_version(); if (opt->dump & DUMP_BIT(version)) return Qtrue; } if (opt->dump & DUMP_BIT(copyright)) { ruby_show_copyright(); return Qtrue; } 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 || 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++; } } opt->script_name = rb_str_new_cstr(opt->script); opt->script = RSTRING_PTR(opt->script_name); #if _WIN32 translit_char_bin(RSTRING_PTR(opt->script_name), '\\', '/'); #elif defined DOSISH translit_char(RSTRING_PTR(opt->script_name), '\\', '/'); #endif ruby_gc_set_params(opt->safe_level); ruby_init_loadpath_safe(opt->safe_level); Init_enc(); lenc = rb_locale_encoding(); rb_enc_associate(rb_progname, lenc); rb_obj_freeze(rb_progname); parser = rb_parser_new(); if (opt->dump & DUMP_BIT(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; #if UTF8_PATH ienc = enc; #endif } rb_enc_associate(opt->script_name, lenc); rb_obj_freeze(opt->script_name); if (IF_UTF8_PATH((uenc = rb_utf8_encoding()) != lenc, 1)) { long i; VALUE load_path = GET_VM()->load_path; const ID id_initial_load_path_mark = INITIAL_LOAD_PATH_MARK; for (i = 0; i < RARRAY_LEN(load_path); ++i) { VALUE path = RARRAY_AREF(load_path, i); int mark = rb_attr_get(path, id_initial_load_path_mark) == path; #if UTF8_PATH VALUE newpath = rb_str_conv_enc(path, uenc, lenc); if (newpath == path) continue; path = newpath; #else path = rb_enc_associate(rb_str_dup(path), lenc); #endif if (mark) rb_ivar_set(path, id_initial_load_path_mark, path); RARRAY_ASET(load_path, i, path); } } Init_ext(); /* load statically linked extensions before rubygems */ if (opt->features & FEATURE_BIT(gems)) { rb_define_module("Gem"); } if (opt->features & FEATURE_BIT(did_you_mean)) { rb_define_module("DidYouMean"); } ruby_init_prelude(); if ((opt->features ^ DEFAULT_FEATURES) & COMPILATION_FEATURES) { VALUE option = rb_hash_new(); #define SET_COMPILE_OPTION(h, o, name) \ rb_hash_aset((h), ID2SYM(rb_intern_const(#name)), \ ((o)->features & FEATURE_BIT(name) ? Qtrue : Qfalse)); SET_COMPILE_OPTION(option, opt, frozen_string_literal); SET_COMPILE_OPTION(option, opt, debug_frozen_string_literal); rb_funcallv(rb_cISeq, rb_intern_const("compile_option="), 1, &option); #undef SET_COMPILE_OPTION } #if UTF8_PATH if (uenc != lenc) { opt->script_name = str_conv_enc(opt->script_name, uenc, lenc); opt->script = RSTRING_PTR(opt->script_name); } #endif ruby_set_argv(argc, argv); process_sflag(&opt->sflag); GetBindingPtr(rb_const_get(rb_cObject, rb_intern("TOPLEVEL_BINDING")), toplevel_binding); /* need to acquire env from toplevel_binding each time, since it * may update after eval() */ if (opt->e_script) { VALUE progname = rb_progname; rb_encoding *eenc; if (opt->src.enc.index >= 0) { eenc = rb_enc_from_index(opt->src.enc.index); } else { eenc = lenc; #if UTF8_PATH if (ienc) eenc = ienc; #endif } #if UTF8_PATH if (eenc != uenc) { opt->e_script = str_conv_enc(opt->e_script, uenc, eenc); } #endif rb_enc_associate(opt->e_script, eenc); if (!(opt->dump & ~DUMP_BIT(version_v))) { ruby_set_script_name(opt->script_name); require_libraries(&opt->req_list); } ruby_set_script_name(progname); base_block = toplevel_context(toplevel_binding); rb_parser_set_context(parser, base_block, TRUE); 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"); } base_block = toplevel_context(toplevel_binding); rb_parser_set_context(parser, base_block, TRUE); tree = load_file(parser, opt->script_name, 1, opt); } ruby_set_script_name(opt->script_name); if (dump & DUMP_BIT(yydebug)) { dump &= ~DUMP_BIT(yydebug); if (!dump) return Qtrue; } 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) { /* 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 if (!rb_default_internal_encoding()) /* Freeze default_internal */ rb_enc_set_default_internal(Qnil); rb_stdio_set_default_encoding(); if (!tree) return Qfalse; process_sflag(&opt->sflag); opt->xflag = 0; if (dump & DUMP_BIT(syntax)) { printf("Syntax OK\n"); dump &= ~DUMP_BIT(syntax); if (!dump) 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); rb_define_global_function("sub", rb_f_sub, -1); rb_define_global_function("gsub", rb_f_gsub, -1); rb_define_global_function("chop", rb_f_chop, 0); rb_define_global_function("chomp", rb_f_chomp, -1); } if (dump & (DUMP_BIT(parsetree)|DUMP_BIT(parsetree_with_comment))) { rb_io_write(rb_stdout, rb_parser_dump_tree(tree, dump & DUMP_BIT(parsetree_with_comment))); rb_io_flush(rb_stdout); dump &= ~DUMP_BIT(parsetree)&~DUMP_BIT(parsetree_with_comment); if (!dump) return Qtrue; } { VALUE path = Qnil; if (!opt->e_script && strcmp(opt->script, "-")) { path = rb_realpath_internal(Qnil, opt->script_name, 1); } base_block = toplevel_context(toplevel_binding); iseq = rb_iseq_new_main(tree, opt->script_name, path, vm_block_iseq(base_block)); } if (dump & DUMP_BIT(insns)) { rb_io_write(rb_stdout, rb_iseq_disasm((const rb_iseq_t *)iseq)); rb_io_flush(rb_stdout); dump &= ~DUMP_BIT(insns); if (!dump) return Qtrue; } if (opt->dump & dump_exit_bits) return Qtrue; rb_define_readonly_boolean("$-p", opt->do_print); rb_define_readonly_boolean("$-l", opt->do_line); rb_define_readonly_boolean("$-a", opt->do_split); rb_set_safe_level(opt->safe_level); return (VALUE)iseq; } #ifndef DOSISH static void warn_cr_in_shebang(const char *str, long len) { if (str[len-1] == '\n' && str[len-2] == '\r') { rb_warn("shebang line ends with \\r may cause a problem"); } } #else #define warn_cr_in_shebang(str, len) (void)0 #endif struct load_file_arg { VALUE parser; VALUE fname; int script; int xflag; ruby_cmdline_options_t *opt; VALUE f; }; static VALUE load_file_internal(VALUE argp_v) { struct load_file_arg *argp = (struct load_file_arg *)argp_v; VALUE parser = argp->parser; VALUE orig_fname = argp->fname; int script = argp->script; ruby_cmdline_options_t *opt = argp->opt; VALUE f = argp->f; int line_start = 1; NODE *tree = 0; rb_encoding *enc; ID set_encoding; int xflag = argp->xflag; argp->script = 0; CONST_ID(set_encoding, "set_encoding"); if (script) { VALUE c = 1; /* something not nil */ VALUE line; char *p, *str; long len; 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_ascii8bit_encoding(); rb_funcall(f, set_encoding, 1, rb_enc_from_encoding(enc)); if (xflag || opt->xflag) { line_start--; search_shebang: forbid_setid("-x"); opt->xflag = FALSE; while (!NIL_P(line = rb_io_gets(f))) { line_start++; RSTRING_GETMEM(line, str, len); if (len > 2 && str[0] == '#' && str[1] == '!') { if (line_start == 1) warn_cr_in_shebang(str, len); if ((p = strstr(str+2, ruby_engine)) != 0) { goto start_read; } } } rb_loaderror("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; RSTRING_GETMEM(line, str, len); warn_cr_in_shebang(str, len); if ((p = strstr(str, ruby_engine)) == 0) { /* not ruby script, assume -x flag */ goto search_shebang; } start_read: str += len - 1; if (*str == '\n') *str-- = '\0'; if (*str == '\r') *str-- = '\0'; /* ruby_engine should not contain a space */ if ((p = strstr(p, " -")) != 0) { opt->warning = 0; moreswitches(p + 1, opt, 0); } /* 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); } else { if (f != rb_stdin) rb_io_close(f); f = Qnil; } if (!(opt->dump & ~DUMP_BIT(version_v))) { ruby_set_script_name(opt->script_name); require_libraries(&opt->req_list); /* 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_utf8_encoding(); } if (NIL_P(f)) { f = rb_str_new(0, 0); rb_enc_associate(f, enc); return (VALUE)rb_parser_compile_string_path(parser, orig_fname, f, line_start); } rb_funcall(f, set_encoding, 2, rb_enc_from_encoding(enc), rb_str_new_cstr("-")); tree = rb_parser_compile_file_path(parser, orig_fname, f, line_start); rb_funcall(f, set_encoding, 1, rb_parser_encoding(parser)); if (script && rb_parser_end_seen_p(parser)) argp->script = script; return (VALUE)tree; } static VALUE open_load_file(VALUE fname_v, int *xflag) { const char *fname = StringValueCStr(fname_v); long flen = RSTRING_LEN(fname_v); VALUE f; int e; if (flen == 1 && fname[0] == '-') { f = rb_stdin; } else { int fd; /* open(2) may block if fname is point to FIFO and it's empty. Let's use O_NONBLOCK. */ #if defined O_NONBLOCK && HAVE_FCNTL && !(O_NONBLOCK & O_ACCMODE) /* TODO: fix conflicting O_NONBLOCK in ruby/win32.h */ # define MODE_TO_LOAD (O_RDONLY | O_NONBLOCK) #elif defined O_NDELAY && HAVE_FCNTL && !(O_NDELAY & O_ACCMODE) # define MODE_TO_LOAD (O_RDONLY | O_NDELAY) #else # define MODE_TO_LOAD (O_RDONLY) #endif int mode = MODE_TO_LOAD; #if defined DOSISH || defined __CYGWIN__ # define isdirsep(x) ((x) == '/' || (x) == '\\') { static const char exeext[] = ".exe"; enum {extlen = sizeof(exeext)-1}; if (flen > extlen && !isdirsep(fname[flen-extlen-1]) && STRNCASECMP(fname+flen-extlen, exeext, extlen) == 0) { mode |= O_BINARY; *xflag = 1; } } #endif if ((fd = rb_cloexec_open(fname, mode, 0)) < 0) { int e = errno; if (!rb_gc_for_fd(e)) { rb_load_fail(fname_v, strerror(e)); } if ((fd = rb_cloexec_open(fname, mode, 0)) < 0) { rb_load_fail(fname_v, strerror(errno)); } } rb_update_max_fd(fd); #if defined HAVE_FCNTL && MODE_TO_LOAD != O_RDONLY /* disabling O_NONBLOCK */ if (fcntl(fd, F_SETFL, 0) < 0) { e = errno; (void)close(fd); rb_load_fail(fname_v, strerror(e)); } #endif e = ruby_is_fd_loadable(fd); if (!e) { e = errno; (void)close(fd); rb_load_fail(fname_v, strerror(e)); } f = rb_io_fdopen(fd, mode, fname); if (e < 0) { /* We need to wait if FIFO is empty. It's FIFO's semantics. rb_thread_wait_fd() release GVL. So, it's safe. */ rb_thread_wait_fd(fd); } } return f; } static VALUE restore_load_file(VALUE arg) { struct load_file_arg *argp = (struct load_file_arg *)arg; VALUE f = argp->f; if (argp->script) { /* * DATA is a File that contains the data section of the executed file. * To create a data section use __END__: * * $ cat t.rb * puts DATA.gets * __END__ * hello world! * * $ ruby t.rb * hello world! */ rb_define_global_const("DATA", f); } else if (f != rb_stdin) { rb_io_close(f); } return Qnil; } static NODE * load_file(VALUE parser, VALUE fname, int script, ruby_cmdline_options_t *opt) { struct load_file_arg arg; arg.parser = parser; arg.fname = fname; arg.script = script; arg.opt = opt; arg.xflag = 0; arg.f = open_load_file(rb_str_encode_ospath(fname), &arg.xflag); return (NODE *)rb_ensure(load_file_internal, (VALUE)&arg, restore_load_file, (VALUE)&arg); } void * rb_load_file(const char *fname) { VALUE fname_v = rb_str_new_cstr(fname); return rb_load_file_str(fname_v); } void * rb_load_file_str(VALUE fname_v) { ruby_cmdline_options_t opt; return load_file(rb_parser_new(), fname_v, 0, cmdline_options_init(&opt)); } void * rb_parser_load_file(VALUE parser, VALUE fname_v) { ruby_cmdline_options_t opt; return load_file(parser, fname_v, 0, cmdline_options_init(&opt)); } /* * call-seq: * Process.argv0 -> frozen_string * * Returns the name of the script being executed. The value is not * affected by assigning a new value to $0. * * This method first appeared in Ruby 2.1 to serve as a global * variable free means to get the script name. */ static VALUE proc_argv0(VALUE process) { return rb_orig_progname; } /* * call-seq: * Process.setproctitle(string) -> string * * Sets the process title that appears on the ps(1) command. Not * necessarily effective on all platforms. No exception will be * raised regardless of the result, nor will NotImplementedError be * raised even if the platform does not support the feature. * * Calling this method does not affect the value of $0. * * Process.setproctitle('myapp: worker #%d' % worker_id) * * This method first appeared in Ruby 2.1 to serve as a global * variable free means to change the process title. */ static VALUE proc_setproctitle(VALUE process, VALUE title) { StringValue(title); setproctitle("%.*s", RSTRING_LENINT(title), RSTRING_PTR(title)); return title; } static void set_arg0(VALUE val, ID id) { if (origarg.argv == 0) rb_raise(rb_eRuntimeError, "$0 not initialized"); rb_progname = rb_str_new_frozen(proc_setproctitle(rb_mProcess, val)); } static inline VALUE external_str_new_cstr(const char *p) { #if UTF8_PATH VALUE str = rb_utf8_str_new_cstr(p); return str_conv_enc(str, NULL, rb_default_external_encoding()); #else return rb_external_str_new_cstr(p); #endif } /*! Sets the current script name to this value. * * This is similar to $0 = name in Ruby level but also affects * Method#location and others. */ void ruby_script(const char *name) { if (name) { rb_orig_progname = rb_progname = external_str_new_cstr(name); rb_vm_set_progname(rb_progname); } } /*! Sets the current script name to this value. * * Same as ruby_script() but accepts a VALUE. */ void ruby_set_script_name(VALUE name) { rb_orig_progname = rb_progname = rb_str_dup(name); rb_vm_set_progname(rb_progname); } static void init_ids(ruby_cmdline_options_t *opt) { rb_uid_t uid = getuid(); rb_uid_t euid = geteuid(); rb_gid_t gid = getgid(); rb_gid_t egid = getegid(); if (uid != euid) opt->setids |= 1; if (egid != gid) opt->setids |= 2; if (uid && opt->setids) { if (opt->safe_level < 1) opt->safe_level = 1; } } #undef forbid_setid static void forbid_setid(const char *s, ruby_cmdline_options_t *opt) { if (opt->setids & 1) rb_raise(rb_eSecurityError, "no %s allowed while running setuid", s); if (opt->setids & 2) rb_raise(rb_eSecurityError, "no %s allowed while running setgid", s); if (opt->safe_level > 0) rb_raise(rb_eSecurityError, "no %s allowed in tainted mode", s); } static void verbose_setter(VALUE val, ID id, void *data) { VALUE *variable = data; *variable = RTEST(val) ? Qtrue : val; } static VALUE opt_W_getter(ID id, void *data) { VALUE *variable = data; switch (*variable) { case Qnil: return INT2FIX(0); case Qfalse: return INT2FIX(1); case Qtrue: return INT2FIX(2); default: return Qnil; } } /*! Defines built-in variables */ void ruby_prog_init(void) { rb_define_hooked_variable("$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("$-W", &ruby_verbose, opt_W_getter, rb_gvar_readonly_setter); rb_define_variable("$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_module_function(rb_mProcess, "argv0", proc_argv0, 0); rb_define_module_function(rb_mProcess, "setproctitle", proc_setproctitle, 1); /* * ARGV contains the command line arguments used to run ruby. * * A library like OptionParser can be used to process command-line * arguments. */ 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 = external_str_new_cstr(argv[i]); OBJ_FREEZE(arg); rb_ary_push(av, arg); } } void * ruby_process_options(int argc, char **argv) { ruby_cmdline_options_t opt; VALUE iseq; const char *script_name = (argc > 0 && argv[0]) ? argv[0] : ruby_engine; ruby_script(script_name); /* for the time being */ rb_argv0 = rb_str_new4(rb_progname); rb_gc_register_mark_object(rb_argv0); iseq = process_options(argc, argv, cmdline_options_init(&opt)); #ifndef HAVE_SETPROCTITLE ruby_init_setproctitle(argc, argv); #endif return (void*)(struct RData*)iseq; } static void fill_standard_fds(void) { int f0, f1, f2, fds[2]; struct stat buf; f0 = fstat(0, &buf) == -1 && errno == EBADF; f1 = fstat(1, &buf) == -1 && errno == EBADF; f2 = fstat(2, &buf) == -1 && errno == EBADF; if (f0) { if (pipe(fds) == 0) { close(fds[1]); if (fds[0] != 0) { dup2(fds[0], 0); close(fds[0]); } } } if (f1 || f2) { if (pipe(fds) == 0) { close(fds[0]); if (f1 && fds[1] != 1) dup2(fds[1], 1); if (f2 && fds[1] != 2) dup2(fds[1], 2); if (fds[1] != 1 && fds[1] != 2) close(fds[1]); } } } /*! Initializes the process for ruby(1). * * This function assumes this process is ruby(1) and it has just started. * Usually programs that embeds CRuby interpreter should not call this function, * and should do their own initialization. */ void ruby_sysinit(int *argc, char ***argv) { #if defined(_WIN32) rb_w32_sysinit(argc, argv); #endif origarg.argc = *argc; origarg.argv = *argv; #if defined(USE_DLN_A_OUT) dln_argv0 = origarg.argv[0]; #endif fill_standard_fds(); }