/********************************************************************** 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 "ruby/ruby.h" #include "ruby/encoding.h" #include "internal.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 #include "ruby/util.h" #ifndef HAVE_STDLIB_H char *getenv(); #endif #define DISABLE_BIT(bit) (1U << disable_##bit) enum disable_flag_bits { disable_gems, disable_rubyopt, disable_flag_count }; #define DUMP_BIT(bit) (1U << dump_##bit) enum dump_flag_bits { dump_version, dump_copyright, dump_usage, dump_yydebug, dump_syntax, dump_parsetree, dump_parsetree_with_comment, dump_insns, dump_flag_count }; struct cmdline_options { int sflag, xflag; int do_loop, do_print; int do_line, do_split; int do_search; unsigned int disable; 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; }; 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; opt->ext.enc.index = -1; opt->intern.enc.index = -1; #if defined DISABLE_RUBYGEMS && DISABLE_RUBYGEMS opt->disable |= DISABLE_BIT(gems); #endif return 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; } 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]", "-Eex[:in] specify the default external and internal character encodings", "-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=1] turn on tainting checks", "-v print version number, then turn on verbose mode", "-w turn warnings on for your script", "-W[level=2] set warning level; 0=silence, 1=medium, 2=verbose", "-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++); } #ifdef MANGLED_PATH 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"); } translit_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; } #else #define rubylib_mangled_path rb_str_new #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); } } #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 #define CONV_TO_POSIX_PATH(p, lib) \ cygwin_conv_to_posix_path((p), (lib)) #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); } #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; } #endif void ruby_init_loadpath_safe(int safe_level); void ruby_init_loadpath(void) { ruby_init_loadpath_safe(0); } void ruby_init_loadpath_safe(int safe_level) { VALUE load_path; ID id_initial_load_path_mark; extern const char ruby_initial_load_paths[]; const char *paths = ruby_initial_load_paths; #if defined LOAD_RELATIVE # if defined HAVE_DLADDR || defined HAVE_CYGWIN_CONV_PATH # 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__ # if VARIABLE_LIBPATH sopath = rb_str_new(0, MAXPATHLEN); libpath = RSTRING_PTR(sopath); GetModuleFileName(libruby, libpath, MAXPATHLEN); # else GetModuleFileName(libruby, libpath, sizeof libpath); # endif #elif defined(__EMX__) _execname(libpath, sizeof(libpath) - 1); #elif defined(HAVE_DLADDR) Dl_info dli; if (dladdr((void *)(VALUE)expand_include_path, &dli)) { char fbuf[MAXPATHLEN]; char *f = dln_find_file_r(dli.dli_fname, getenv(PATH_ENV), fbuf, sizeof(fbuf)); VALUE fname = rb_str_new_cstr(f ? f : dli.dli_fname); rb_str_freeze(fname); sopath = rb_realpath_internal(Qnil, fname, 1); } else { sopath = rb_str_new(0, 0); } libpath = RSTRING_PTR(sopath); #endif #if !VARIABLE_LIBPATH libpath[sizeof(libpath) - 1] = '\0'; #endif #if defined DOSISH translit_char(libpath, '\\', '/'); #elif defined __CYGWIN__ { # if VARIABLE_LIBPATH 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; } } # else char rubylib[FILENAME_MAX]; cygwin_conv_to_posix_path(libpath, rubylib); strncpy(libpath, rubylib, sizeof(libpath)); # endif } #endif p = strrchr(libpath, '/'); if (p) { *p = 0; if (p - libpath > 3 && !(STRCASECMP(p - 4, "/bin") && strcmp(p - 4, "/lib"))) { p -= 4; *p = 0; } } #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 static const char exec_prefix[] = RUBY_EXEC_PREFIX; #define RUBY_RELATIVE(path, len) rubylib_mangled_path((path), (len)) #define PREFIX_PATH() RUBY_RELATIVE(exec_prefix, sizeof(exec_prefix)-1) #endif load_path = GET_VM()->load_path; if (safe_level == 0) { #ifdef MANGLED_PATH rubylib_mangled_path("", 0); #endif ruby_push_include(getenv("RUBYLIB"), identical_path); } id_initial_load_path_mark = rb_intern_const("@gem_prelude_index"); 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; if (!list) { *req_list = list = rb_ary_new(); RBASIC(list)->klass = 0; } rb_ary_push(list, rb_obj_freeze(rb_str_new2(mod))); } static void require_libraries(VALUE *req_list) { VALUE list = *req_list; VALUE self = rb_vm_top_self(); ID require; rb_thread_t *th = GET_THREAD(); rb_block_t *prev_base_block = th->base_block; int prev_parse_in_eval = th->parse_in_eval; th->base_block = 0; th->parse_in_eval = 0; 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(self, require, 1, &feature); } *req_list = 0; th->parse_in_eval = prev_parse_in_eval; th->base_block = prev_base_block; } static void process_sflag(int *sflag) { if (*sflag > 0) { 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 = 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, struct cmdline_options *opt, int envopt); static void moreswitches(const char *s, struct cmdline_options *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); } #define NAME_MATCH_P(name, str, len) \ ((len) < (int)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(version); SET_WHEN_DUMP(copyright); SET_WHEN_DUMP(usage); SET_WHEN_DUMP(yydebug); SET_WHEN_DUMP(syntax); SET_WHEN_DUMP(parsetree); SET_WHEN_DUMP(parsetree_with_comment); SET_WHEN_DUMP(insns); rb_warn("don't know how to dump `%.*s',", len, str); rb_warn("but only [version, copyright, usage, yydebug, syntax, parsetree, parsetree_with_comment, insns]."); } 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 %s", type, RSTRING_PTR(*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, struct cmdline_options *opt, int envopt) { long n, argc0 = argc; const char *s; if (argc == 0) return 0; for (argc--, argv++; argc > 0; argc--, argv++) { const char *const arg = argv[0]; if (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; } ruby_show_version(); opt->verbose = 1; case 'w': 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; } switch (v) { case 0: ruby_verbose = Qnil; break; case 1: ruby_verbose = Qfalse; break; default: ruby_verbose = Qtrue; break; } } 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) { 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->req_list, s); } else if (argv[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; 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 (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 (argv[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) \ ((*(s)++ ? !*(s) : (!--argc || !((s) = *++argv))) ? \ rb_raise(rb_eRuntimeError, "missing argument for --" name) \ : (void)0) # define is_option_with_arg(name, allow_hyphen, allow_envopt) \ (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), 1) : 0) if (strcmp("copyright", s) == 0) { if (envopt) goto noenvopt_long; opt->dump |= DUMP_BIT(copyright); } else if (strcmp("debug", s) == 0) { ruby_debug = Qtrue; ruby_verbose = Qtrue; } else if (is_option_with_arg("enable", Qtrue, Qtrue)) { ruby_each_words(s, enable_option, &opt->disable); } else if (is_option_with_arg("disable", Qtrue, Qtrue)) { ruby_each_words(s, disable_option, &opt->disable); } 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(usage); 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 } } switch_end: 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) 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(argc, argv) int argc; VALUE *argv; { VALUE str = rb_funcall3(uscore_get(), rb_intern("sub"), argc, argv); rb_lastline_set(str); return str; } /* * call-seq: * gsub(pattern, replacement) -> string * gsub(pattern) {|...| block } -> string * * Equivalent to $_.gsub..., except that $_ * receives the modified result. * Available only when -p/-n command line option specified. * */ static VALUE rb_f_gsub(argc, argv) int argc; VALUE *argv; { VALUE str = rb_funcall3(uscore_get(), rb_intern("gsub"), argc, argv); rb_lastline_set(str); return str; } /* * call-seq: * chop -> string * * Equivalent to ($_.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_funcall3(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(argc, argv) int argc; VALUE *argv; { VALUE str = rb_funcall3(uscore_get(), rb_intern("chomp"), argc, argv); rb_lastline_set(str); return str; } static VALUE process_options(int argc, char **argv, struct cmdline_options *opt) { NODE *tree = 0; VALUE parser; VALUE iseq; rb_encoding *enc, *lenc; const char *s; char fbuf[MAXPATHLEN]; int i = (int)proc_options(argc, argv, opt, 0); rb_thread_t *th = GET_THREAD(); rb_env_t *env = 0; argc -= i; argv += i; if (opt->dump & DUMP_BIT(usage)) { usage(origarg.argv[0]); return Qtrue; } if (!(opt->disable & DISABLE_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->dump & DUMP_BIT(version)) { ruby_show_version(); return Qtrue; } if (opt->dump & DUMP_BIT(copyright)) { ruby_show_copyright(); } if (opt->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++; } } opt->script_name = rb_str_new_cstr(opt->script); opt->script = RSTRING_PTR(opt->script_name); #if defined DOSISH || defined __CYGWIN__ translit_char(RSTRING_PTR(opt->script_name), '\\', '/'); #endif ruby_init_loadpath_safe(opt->safe_level); rb_enc_find_index("encdb"); 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; } rb_enc_associate(opt->script_name, lenc); rb_obj_freeze(opt->script_name); { long i; VALUE load_path = GET_VM()->load_path; for (i = 0; i < RARRAY_LEN(load_path); ++i) { rb_enc_associate(RARRAY_PTR(load_path)[i], lenc); } } if (!(opt->disable & DISABLE_BIT(gems))) { #if defined DISABLE_RUBYGEMS && DISABLE_RUBYGEMS rb_require("rubygems"); #else rb_define_module("Gem"); #endif } ruby_init_prelude(); ruby_set_argv(argc, argv); process_sflag(&opt->sflag); { /* set eval context */ VALUE toplevel_binding = rb_const_get(rb_cObject, rb_intern("TOPLEVEL_BINDING")); rb_binding_t *bind; GetBindingPtr(toplevel_binding, bind); GetEnvPtr(bind->env, env); } #define PREPARE_PARSE_MAIN(expr) do { \ th->parse_in_eval--; \ th->base_block = &env->block; \ expr; \ th->parse_in_eval++; \ th->base_block = 0; \ } while (0) 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; } rb_enc_associate(opt->e_script, eenc); rb_vm_set_progname(rb_progname = opt->script_name); require_libraries(&opt->req_list); rb_vm_set_progname(rb_progname = progname); PREPARE_PARSE_MAIN({ 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"); } PREPARE_PARSE_MAIN({ tree = load_file(parser, opt->script, 1, opt); }); } rb_progname = opt->script_name; rb_vm_set_progname(rb_progname); if (opt->dump & DUMP_BIT(yydebug)) 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 (opt->safe_level >= 4) { FL_UNSET(rb_argv, FL_TAINT); FL_UNSET(GET_VM()->load_path, FL_TAINT); } if (opt->dump & DUMP_BIT(syntax)) { printf("Syntax OK\n"); return Qtrue; } if (opt->do_print) { PREPARE_PARSE_MAIN({ tree = rb_parser_append_print(parser, tree); }); } if (opt->do_loop) { PREPARE_PARSE_MAIN({ 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 (opt->dump & DUMP_BIT(parsetree) || opt->dump & DUMP_BIT(parsetree_with_comment)) { rb_io_write(rb_stdout, rb_parser_dump_tree(tree, opt->dump & DUMP_BIT(parsetree_with_comment))); rb_io_flush(rb_stdout); return Qtrue; } PREPARE_PARSE_MAIN({ VALUE path = Qnil; if (!opt->e_script && strcmp(opt->script, "-")) path = rb_realpath_internal(Qnil, opt->script_name, 1); iseq = rb_iseq_new_main(tree, opt->script_name, path); }); if (opt->dump & DUMP_BIT(insns)) { rb_io_write(rb_stdout, rb_iseq_disasm(iseq)); rb_io_flush(rb_stdout); 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); rb_gc_set_params(); return iseq; } struct load_file_arg { VALUE parser; const char *fname; int script; struct cmdline_options *opt; }; static VALUE load_file_internal(VALUE arg) { extern VALUE rb_stdin; struct load_file_arg *argp = (struct load_file_arg *)arg; VALUE parser = argp->parser; const char *fname = argp->fname; int script = argp->script; struct cmdline_options *opt = argp->opt; VALUE f; int line_start = 1; NODE *tree = 0; rb_encoding *enc; ID set_encoding; int xflag = 0; 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; xflag = 1; } } #endif if ((fd = rb_cloexec_open(fname, mode, 0)) < 0) { rb_load_fail(fname); } rb_update_max_fd(fd); f = rb_io_fdopen(fd, mode, fname); } CONST_ID(set_encoding, "set_encoding"); 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_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++; 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, assume -x flag */ goto search_shebang; } 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) { 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; } rb_vm_set_progname(rb_progname = 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_usascii_encoding(); } if (NIL_P(f)) { f = rb_str_new(0, 0); rb_enc_associate(f, enc); return (VALUE)rb_parser_compile_string(parser, fname, f, line_start); } rb_funcall(f, set_encoding, 2, rb_enc_from_encoding(enc), rb_str_new_cstr("-")); tree = rb_parser_compile_file(parser, fname, f, line_start); rb_funcall(f, set_encoding, 1, rb_parser_encoding(parser)); if (script && tree && rb_parser_end_seen_p(parser)) { /* * 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 (VALUE)tree; } static VALUE restore_lineno(VALUE lineno) { return rb_gv_set("$.", lineno); } static NODE * load_file(VALUE parser, const char *fname, int script, struct cmdline_options *opt) { struct load_file_arg arg; arg.parser = parser; arg.fname = fname; arg.script = script; arg.opt = opt; return (NODE *)rb_ensure(load_file_internal, (VALUE)&arg, restore_lineno, rb_gv_get("$.")); } void * rb_load_file(const char *fname) { struct cmdline_options opt; return load_file(rb_parser_new(), fname, 0, cmdline_options_init(&opt)); } static void set_arg0(VALUE val, ID id) { char *s; long i; if (origarg.argv == 0) rb_raise(rb_eRuntimeError, "$0 not initialized"); StringValue(val); s = RSTRING_PTR(val); i = RSTRING_LEN(val); setproctitle("%.*s", (int)i, s); rb_progname = rb_obj_freeze(rb_external_str_new(s, i)); } void ruby_script(const char *name) { if (name) { rb_progname = rb_external_str_new(name, strlen(name)); rb_vm_set_progname(rb_progname); } } static void init_ids(struct cmdline_options *opt) { rb_uid_t uid = getuid(); rb_uid_t euid = geteuid(); rb_gid_t gid = getgid(); rb_gid_t egid = getegid(); if (uid != euid) opt->setids |= 1; if (egid != gid) opt->setids |= 2; if (uid && opt->setids) { if (opt->safe_level < 1) opt->safe_level = 1; } } #undef forbid_setid static void forbid_setid(const char *s, struct cmdline_options *opt) { if (opt->setids & 1) rb_raise(rb_eSecurityError, "no %s allowed while running setuid", s); if (opt->setids & 2) rb_raise(rb_eSecurityError, "no %s allowed while running setgid", s); if (opt->safe_level > 0) rb_raise(rb_eSecurityError, "no %s allowed in tainted mode", s); } static void verbose_setter(VALUE val, ID id, void *data) { VALUE *variable = data; *variable = RTEST(val) ? Qtrue : val; } static VALUE opt_W_getter(ID id, void *data) { VALUE *variable = data; switch (*variable) { case Qnil: return INT2FIX(0); case Qfalse: return INT2FIX(1); case Qtrue: return INT2FIX(2); } return Qnil; /* not reached */ } void ruby_prog_init(void) { rb_define_hooked_variable("$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("$-W", &ruby_verbose, opt_W_getter, rb_gvar_readonly_setter); rb_define_variable("$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); /* * ARGV contains the command line arguments used to run ruby with the * first value containing the name of the executable. * * 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 = rb_external_str_new_cstr(argv[i]); OBJ_FREEZE(arg); rb_ary_push(av, arg); } } void * ruby_process_options(int argc, char **argv) { struct cmdline_options opt; VALUE iseq; ruby_script(argv[0]); /* 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 { extern void compat_init_setproctitle(int argc, char *argv[]); compat_init_setproctitle(argc, argv); } #endif return (void*)(struct RData*)iseq; } void ruby_sysinit(int *argc, char ***argv) { #if defined(_WIN32) void rb_w32_sysinit(int *argc, char ***argv); rb_w32_sysinit(argc, argv); #endif origarg.argc = *argc; origarg.argv = *argv; #if defined(USE_DLN_A_OUT) dln_argv0 = origarg.argv[0]; #endif }