Console.cpp

   1 /* Cycript - Optimizing JavaScript Compiler/Runtime
   2  * Copyright (C) 2009-2013  Jay Freeman (saurik)
   3 */
   4
   5 /* GNU General Public License, Version 3 {{{ */
   6 /*
   7  * Cycript is free software: you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published
   9  * by the Free Software Foundation, either version 3 of the License,
  10  * or (at your option) any later version.
  11  *
  12  * Cycript is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with Cycript.  If not, see <http://www.gnu.org/licenses/>.
  19 **/
  20 /* }}} */
  21
  22 #include "cycript.hpp"
  23
  24 #ifdef CY_EXECUTE
  25 #include "JavaScript.hpp"
  26 #endif
  27
  28 #include <cstdio>
  29 #include <fstream>
  30 #include <sstream>
  31
  32 #include <setjmp.h>
  33
  34 #ifdef HAVE_READLINE_H
  35 #include <readline.h>
  36 #else
  37 #include <readline/readline.h>
  38 #endif
  39
  40 #ifdef HAVE_HISTORY_H
  41 #include <history.h>
  42 #else
  43 #include <readline/history.h>
  44 #endif
  45
  46 #include <errno.h>
  47 #include <unistd.h>
  48
  49 #include <sys/socket.h>
  50 #include <sys/types.h>
  51 #include <sys/stat.h>
  52 #include <fcntl.h>
  53 #include <netdb.h>
  54
  55 #include <sys/types.h>
  56 #include <sys/socket.h>
  57 #include <netinet/in.h>
  58 #include <sys/un.h>
  59 #include <pwd.h>
  60
  61 #include <apr_getopt.h>
  62 #include <apr_pools.h>
  63 #include <apr_strings.h>
  64
  65 #include <dlfcn.h>
  66
  67 #include "Display.hpp"
  68 #include "Replace.hpp"
  69
  70 #include "Cycript.tab.hh"
  71 #include "Driver.hpp"
  72
  73 static volatile enum {
  74     Working,
  75     Parsing,
  76     Running,
  77     Sending,
  78     Waiting,
  79 } mode_;
  80
  81 static jmp_buf ctrlc_;
  82
  83 static void sigint(int) {
  84     switch (mode_) {
  85         case Working:
  86             return;
  87         case Parsing:
  88             longjmp(ctrlc_, 1);
  89         case Running:
  90             throw "*** Ctrl-C";
  91         case Sending:
  92             return;
  93         case Waiting:
  94             return;
  95     }
  96 }
  97
  98 #if YYDEBUG
  99 static bool bison_;
 100 #endif
 101 static bool strict_;
 102 static bool pretty_;
 103
 104 void Setup(CYDriver &driver, cy::parser &parser) {
 105 #if YYDEBUG
 106     if (bison_)
 107         parser.set_debug_level(1);
 108 #endif
 109     if (strict_)
 110         driver.strict_ = true;
 111 }
 112
 113 void Setup(CYOutput &out, CYDriver &driver, CYOptions &options, bool lower) {
 114     out.pretty_ = pretty_;
 115     CYContext context(options);
 116     if (lower)
 117         driver.program_->Replace(context);
 118 }
 119
 120 static CYUTF8String Run(CYPool &pool, int client, CYUTF8String code) {
 121     const char *json;
 122     uint32_t size;
 123
 124     if (client == -1) {
 125         mode_ = Running;
 126 #ifdef CY_EXECUTE
 127         json = CYExecute(CYGetJSContext(), pool, code);
 128 #else
 129         json = NULL;
 130 #endif
 131         mode_ = Working;
 132         if (json == NULL)
 133             size = 0;
 134         else
 135             size = strlen(json);
 136     } else {
 137         mode_ = Sending;
 138         size = code.size;
 139         _assert(CYSendAll(client, &size, sizeof(size)));
 140         _assert(CYSendAll(client, code.data, code.size));
 141         mode_ = Waiting;
 142         _assert(CYRecvAll(client, &size, sizeof(size)));
 143         if (size == _not(uint32_t))
 144             json = NULL;
 145         else {
 146             char *temp(new(pool) char[size + 1]);
 147             _assert(CYRecvAll(client, temp, size));
 148             temp[size] = '\0';
 149             json = temp;
 150         }
 151         mode_ = Working;
 152     }
 153
 154     return CYUTF8String(json, size);
 155 }
 156
 157 static CYUTF8String Run(CYPool &pool, int client, const std::string &code) {
 158     return Run(pool, client, CYUTF8String(code.c_str(), code.size()));
 159 }
 160
 161 static std::ostream *out_;
 162
 163 static void Write(bool syntax, const char *data, size_t size, std::ostream &out) {
 164     if (syntax)
 165         CYLexerHighlight(data, size, out);
 166     else
 167         out.write(data, size);
 168 }
 169
 170 static void Output(bool syntax, CYUTF8String json, std::ostream *out, bool expand = false) {
 171     const char *data(json.data);
 172     size_t size(json.size);
 173
 174     if (data == NULL || out == NULL)
 175         return;
 176
 177     if (!expand ||
 178         data[0] != '@' && data[0] != '"' && data[0] != '\'' ||
 179         data[0] == '@' && data[1] != '"' && data[1] != '\''
 180     )
 181         Write(syntax, data, size, *out);
 182     else for (size_t i(0); i != size; ++i)
 183         if (data[i] != '\\')
 184             *out << data[i];
 185         else switch(data[++i]) {
 186             case '\0': goto done;
 187             case '\\': *out << '\\'; break;
 188             case '\'': *out << '\''; break;
 189             case '"': *out << '"'; break;
 190             case 'b': *out << '\b'; break;
 191             case 'f': *out << '\f'; break;
 192             case 'n': *out << '\n'; break;
 193             case 'r': *out << '\r'; break;
 194             case 't': *out << '\t'; break;
 195             case 'v': *out << '\v'; break;
 196             default: *out << '\\'; --i; break;
 197         }
 198
 199   done:
 200     *out << std::endl;
 201 }
 202
 203 static void Run(int client, bool syntax, const char *data, size_t size, std::ostream *out = NULL, bool expand = false) {
 204     CYPool pool;
 205     Output(syntax, Run(pool, client, CYUTF8String(data, size)), out, expand);
 206 }
 207
 208 static void Run(int client, bool syntax, std::string &code, std::ostream *out = NULL, bool expand = false) {
 209     Run(client, syntax, code.c_str(), code.size(), out, expand);
 210 }
 211
 212 int (*append_history$)(int, const char *);
 213
 214 static std::string command_;
 215
 216 static CYExpression *ParseExpression(CYUTF8String code) {
 217     std::stringstream stream;
 218     stream << '(' << code << ')';
 219     CYDriver driver(stream);
 220
 221     cy::parser parser(driver);
 222     Setup(driver, parser);
 223
 224     if (parser.parse() != 0 || !driver.errors_.empty())
 225         return NULL;
 226
 227     CYOptions options;
 228     CYContext context(options);
 229
 230     CYStatement *statement(driver.program_->statements_);
 231     _assert(statement != NULL);
 232     _assert(statement->next_ == NULL);
 233
 234     CYExpress *express(dynamic_cast<CYExpress *>(driver.program_->statements_));
 235     _assert(express != NULL);
 236
 237     return express->expression_;
 238 }
 239
 240 static int client_;
 241
 242 static char **Complete(const char *word, int start, int end) {
 243     rl_attempted_completion_over = TRUE;
 244
 245     CYLocalPool pool;
 246
 247     std::string line(rl_line_buffer, start);
 248     std::istringstream stream(command_ + line);
 249     CYDriver driver(stream);
 250
 251     driver.auto_ = true;
 252
 253     cy::parser parser(driver);
 254     Setup(driver, parser);
 255
 256     if (parser.parse() != 0 || !driver.errors_.empty())
 257         return NULL;
 258
 259     if (driver.mode_ == CYDriver::AutoNone)
 260         return NULL;
 261
 262     CYExpression *expression;
 263
 264     CYOptions options;
 265     CYContext context(options);
 266
 267     std::ostringstream prefix;
 268
 269     switch (driver.mode_) {
 270         case CYDriver::AutoPrimary:
 271             expression = $ CYThis();
 272         break;
 273
 274         case CYDriver::AutoDirect:
 275             expression = driver.context_;
 276         break;
 277
 278         case CYDriver::AutoIndirect:
 279             expression = $ CYIndirect(driver.context_);
 280         break;
 281
 282         case CYDriver::AutoMessage: {
 283             CYDriver::Context &thing(driver.contexts_.back());
 284             expression = $M($C1($V("object_getClass"), thing.context_), $S("messages"));
 285             for (CYDriver::Context::Words::const_iterator part(thing.words_.begin()); part != thing.words_.end(); ++part)
 286                 prefix << (*part)->word_ << ':';
 287         } break;
 288
 289         default:
 290             _assert(false);
 291     }
 292
 293     std::string begin(prefix.str());
 294
 295     driver.program_ = $ CYProgram($ CYExpress($C3(ParseExpression(
 296     "   function(object, prefix, word) {\n"
 297     "       var names = [];\n"
 298     "       var before = prefix.length;\n"
 299     "       prefix += word;\n"
 300     "       var entire = prefix.length;\n"
 301     "       for (var name in object)\n"
 302     "           if (name.substring(0, entire) == prefix)\n"
 303     "               names.push(name.substr(before));\n"
 304     "       return names;\n"
 305     "   }\n"
 306     ), expression, $S(begin.c_str()), $S(word))));
 307
 308     driver.program_->Replace(context);
 309
 310     std::ostringstream str;
 311     CYOutput out(str, options);
 312     out << *driver.program_;
 313
 314     std::string code(str.str());
 315     CYUTF8String json(Run(pool, client_, code));
 316     // XXX: if this fails we should not try to parse it
 317
 318     CYExpression *result(ParseExpression(json));
 319     if (result == NULL)
 320         return NULL;
 321
 322     CYArray *array(dynamic_cast<CYArray *>(result->Primitive(context)));
 323     if (array == NULL) {
 324         *out_ << '\n';
 325         Output(false, json, out_);
 326         rl_forced_update_display();
 327         return NULL;
 328     }
 329
 330     // XXX: use an std::set?
 331     typedef std::vector<std::string> Completions;
 332     Completions completions;
 333
 334     std::string common;
 335     bool rest(false);
 336
 337     CYForEach (element, array->elements_) {
 338         CYString *string(dynamic_cast<CYString *>(element->value_));
 339         _assert(string != NULL);
 340
 341         std::string completion;
 342         if (string->size_ != 0)
 343             completion.assign(string->value_, string->size_);
 344         else if (driver.mode_ == CYDriver::AutoMessage)
 345             completion = "]";
 346         else
 347             continue;
 348
 349         completions.push_back(completion);
 350
 351         if (!rest) {
 352             common = completion;
 353             rest = true;
 354         } else {
 355             size_t limit(completion.size()), size(common.size());
 356             if (size > limit)
 357                 common = common.substr(0, limit);
 358             else
 359                 limit = size;
 360             for (limit = 0; limit != size; ++limit)
 361                 if (common[limit] != completion[limit])
 362                     break;
 363             if (limit != size)
 364                 common = common.substr(0, limit);
 365         }
 366     }
 367
 368     size_t count(completions.size());
 369     if (count == 0)
 370         return NULL;
 371
 372     size_t colon(common.find(':'));
 373     if (colon != std::string::npos)
 374         common = common.substr(0, colon + 1);
 375     if (completions.size() == 1)
 376         common += ' ';
 377
 378     char **results(reinterpret_cast<char **>(malloc(sizeof(char *) * (count + 2))));
 379
 380     results[0] = strdup(common.c_str());
 381     size_t index(0);
 382     for (Completions::const_iterator i(completions.begin()); i != completions.end(); ++i)
 383         results[++index] = strdup(i->c_str());
 384     results[count + 1] = NULL;
 385
 386     return results;
 387 }
 388
 389 // need char *, not const char *
 390 static char name_[] = "cycript";
 391 static char break_[] = " \t\n\"\\'`@$><=;|&{(" ")}" ".:[]";
 392
 393 class History {
 394   private:
 395     std::string histfile_;
 396     size_t histlines_;
 397
 398   public:
 399     History(std::string histfile) :
 400         histfile_(histfile),
 401         histlines_(0)
 402     {
 403         read_history(histfile_.c_str());
 404     }
 405
 406     ~History() {
 407         if (append_history$ != NULL) {
 408             _syscall(close(_syscall(open(histfile_.c_str(), O_CREAT | O_WRONLY, 0600))));
 409             _assert((*append_history$)(histlines_, histfile_.c_str()) == 0);
 410         } else {
 411             _assert(write_history(histfile_.c_str()) == 0);
 412         }
 413     }
 414
 415     void operator +=(const std::string &command) {
 416         add_history(command_.c_str());
 417         ++histlines_;
 418     }
 419 };
 420
 421 static void Console(CYOptions &options) {
 422     CYPool pool;
 423
 424     passwd *passwd;
 425     if (const char *username = getenv("LOGNAME"))
 426         passwd = getpwnam(username);
 427     else
 428         passwd = getpwuid(getuid());
 429
 430     std::string basedir(passwd->pw_dir);
 431     basedir += "/.cycript";
 432     mkdir(basedir.c_str(), 0700);
 433
 434     rl_initialize();
 435     rl_readline_name = name_;
 436
 437     History history(basedir + "/history");
 438
 439     bool bypass(false);
 440     bool debug(false);
 441     bool expand(false);
 442     bool lower(true);
 443     bool syntax(true);
 444
 445     out_ = &std::cout;
 446
 447     // rl_completer_word_break_characters is broken in libedit
 448     rl_basic_word_break_characters = break_;
 449
 450     rl_completer_word_break_characters = break_;
 451     rl_attempted_completion_function = &Complete;
 452     rl_bind_key('\t', rl_complete);
 453
 454     struct sigaction action;
 455     sigemptyset(&action.sa_mask);
 456     action.sa_handler = &sigint;
 457     action.sa_flags = 0;
 458     sigaction(SIGINT, &action, NULL);
 459
 460     restart: for (;;) {
 461         command_.clear();
 462         std::vector<std::string> lines;
 463
 464         bool extra(false);
 465         const char *prompt("cy# ");
 466
 467         if (setjmp(ctrlc_) != 0) {
 468             mode_ = Working;
 469             *out_ << std::endl;
 470             goto restart;
 471         }
 472
 473       read:
 474
 475 #if RL_READLINE_VERSION >= 0x0600
 476         if (syntax)
 477             rl_redisplay_function = CYDisplayUpdate;
 478         else
 479             rl_redisplay_function = rl_redisplay;
 480 #endif
 481
 482         mode_ = Parsing;
 483         char *line(readline(prompt));
 484         mode_ = Working;
 485
 486         if (line == NULL) {
 487             *out_ << std::endl;
 488             break;
 489         } else if (line[0] == '\0')
 490             goto read;
 491
 492         if (!extra) {
 493             extra = true;
 494             if (line[0] == '?') {
 495                 std::string data(line + 1);
 496                 if (data == "bypass") {
 497                     bypass = !bypass;
 498                     *out_ << "bypass == " << (bypass ? "true" : "false") << std::endl;
 499                 } else if (data == "debug") {
 500                     debug = !debug;
 501                     *out_ << "debug == " << (debug ? "true" : "false") << std::endl;
 502                 } else if (data == "destroy") {
 503                     CYDestroyContext();
 504                 } else if (data == "gc") {
 505                     *out_ << "collecting... " << std::flush;
 506                     CYGarbageCollect(CYGetJSContext());
 507                     *out_ << "done." << std::endl;
 508                 } else if (data == "exit") {
 509                     return;
 510                 } else if (data == "expand") {
 511                     expand = !expand;
 512                     *out_ << "expand == " << (expand ? "true" : "false") << std::endl;
 513                 } else if (data == "lower") {
 514                     lower = !lower;
 515                     *out_ << "lower == " << (lower ? "true" : "false") << std::endl;
 516                 } else if (data == "syntax") {
 517                     syntax = !syntax;
 518                     *out_ << "syntax == " << (syntax ? "true" : "false") << std::endl;
 519                 }
 520                 command_ = line;
 521                 history += command_;
 522                 goto restart;
 523             }
 524         }
 525
 526         command_ += line;
 527
 528         char *begin(line), *end(line + strlen(line));
 529         while (char *nl = reinterpret_cast<char *>(memchr(begin, '\n', end - begin))) {
 530             *nl = '\0';
 531             lines.push_back(begin);
 532             begin = nl + 1;
 533         }
 534
 535         lines.push_back(begin);
 536
 537         free(line);
 538
 539         std::string code;
 540
 541         if (bypass)
 542             code = command_;
 543         else {
 544             CYLocalPool pool;
 545
 546             std::istringstream stream(command_);
 547             CYDriver driver(stream);
 548
 549             cy::parser parser(driver);
 550             Setup(driver, parser);
 551
 552             if (parser.parse() != 0 || !driver.errors_.empty()) {
 553                 for (CYDriver::Errors::const_iterator error(driver.errors_.begin()); error != driver.errors_.end(); ++error) {
 554                     cy::position begin(error->location_.begin);
 555                     if (begin.line != lines.size() || begin.column < lines.back().size() || error->warning_) {
 556                         cy::position end(error->location_.end);
 557
 558                         if (begin.line != lines.size()) {
 559                             std::cerr << "  | ";
 560                             std::cerr << lines[begin.line - 1] << std::endl;
 561                         }
 562
 563                         std::cerr << "....";
 564                         for (size_t i(0); i != begin.column; ++i)
 565                             std::cerr << '.';
 566                         if (begin.line != end.line || begin.column == end.column)
 567                             std::cerr << '^';
 568                         else for (size_t i(0), e(end.column - begin.column); i != e; ++i)
 569                             std::cerr << '^';
 570                         std::cerr << std::endl;
 571
 572                         std::cerr << "  | ";
 573                         std::cerr << error->message_ << std::endl;
 574
 575                         history += command_;
 576                         goto restart;
 577                     }
 578                 }
 579
 580                 driver.errors_.clear();
 581
 582                 command_ += '\n';
 583                 prompt = "cy> ";
 584                 goto read;
 585             }
 586
 587             if (driver.program_ == NULL)
 588                 goto restart;
 589
 590             std::ostringstream str;
 591             CYOutput out(str, options);
 592             Setup(out, driver, options, lower);
 593             out << *driver.program_;
 594             code = str.str();
 595         }
 596
 597         history += command_;
 598
 599         if (debug) {
 600             std::cout << "cy= ";
 601             Write(syntax, code.c_str(), code.size(), std::cout);
 602             std::cout << std::endl;
 603         }
 604
 605         Run(client_, syntax, code, out_, expand);
 606     }
 607 }
 608
 609 void InjectLibrary(pid_t pid);
 610
 611 int Main(int argc, char const * const argv[], char const * const envp[]) {
 612     _aprcall(apr_initialize());
 613
 614     apr_pool_t *pool;
 615     apr_pool_create(&pool, NULL);
 616
 617     bool tty(isatty(STDIN_FILENO));
 618     bool compile(false);
 619     bool target(false);
 620     CYOptions options;
 621
 622     append_history$ = (int (*)(int, const char *)) (dlsym(RTLD_DEFAULT, "append_history"));
 623
 624 #ifdef CY_ATTACH
 625     pid_t pid(_not(pid_t));
 626 #endif
 627
 628     const char *host(NULL);
 629     const char *port(NULL);
 630
 631     apr_getopt_t *state;
 632     _aprcall(apr_getopt_init(&state, pool, argc, argv));
 633
 634     for (;;) {
 635         int opt;
 636         const char *arg;
 637
 638         apr_status_t status(apr_getopt_long(state, (apr_getopt_option_t[]) {
 639             {NULL, 'c', false, NULL},
 640             {NULL, 'g', true, NULL},
 641             {NULL, 'n', true, NULL},
 642 #ifdef CY_ATTACH
 643             {NULL, 'p', true, NULL},
 644 #endif
 645             {NULL, 'r', true, NULL},
 646             {NULL, 's', false, NULL},
 647         {0, 0, 0, 0}}, &opt, &arg));
 648
 649         switch (status) {
 650             case APR_EOF:
 651                 goto getopt;
 652             case APR_BADCH:
 653             case APR_BADARG:
 654                 fprintf(stderr,
 655                     "usage: cycript [-c]"
 656 #ifdef CY_ATTACH
 657                     " [-p <pid|name>]"
 658 #endif
 659                     " [-r <host:port>]"
 660                     " [<script> [<arg>...]]\n"
 661                 );
 662                 return 1;
 663             default:
 664                 _aprcall(status);
 665         }
 666
 667         switch (opt) {
 668             target:
 669                 if (!target)
 670                     target = true;
 671                 else {
 672                     fprintf(stderr, "only one of -[c"
 673 #ifdef CY_ATTACH
 674                     "p"
 675 #endif
 676                     "r] may be used at a time\n");
 677                     return 1;
 678                 }
 679             break;
 680
 681             case 'c':
 682                 compile = true;
 683             goto target;
 684
 685             case 'g':
 686                 if (false);
 687                 else if (strcmp(arg, "rename") == 0)
 688                     options.verbose_ = true;
 689 #if YYDEBUG
 690                 else if (strcmp(arg, "bison") == 0)
 691                     bison_ = true;
 692 #endif
 693                 else {
 694                     fprintf(stderr, "invalid name for -g\n");
 695                     return 1;
 696                 }
 697             break;
 698
 699             case 'n':
 700                 if (false);
 701                 else if (strcmp(arg, "minify") == 0)
 702                     pretty_ = true;
 703                 else {
 704                     fprintf(stderr, "invalid name for -n\n");
 705                     return 1;
 706                 }
 707             break;
 708
 709 #ifdef CY_ATTACH
 710             case 'p': {
 711                 size_t size(strlen(arg));
 712                 char *end;
 713
 714                 pid = strtoul(arg, &end, 0);
 715                 if (arg + size != end) {
 716                     // XXX: arg needs to be escaped in some horrendous way of doom
 717                     const char *command(apr_pstrcat(pool, "ps axc|sed -e '/^ *[0-9]/{s/^ *\\([0-9]*\\)\\( *[^ ]*\\)\\{3\\} *-*\\([^ ]*\\)/\\3 \\1/;/^", arg, " /{s/^[^ ]* //;q;};};d'", NULL));
 718
 719                     if (FILE *pids = popen(command, "r")) {
 720                         char value[32];
 721                         size = 0;
 722
 723                         for (;;) {
 724                             size_t read(fread(value + size, 1, sizeof(value) - size, pids));
 725                             if (read == 0)
 726                                 break;
 727                             else {
 728                                 size += read;
 729                                 if (size == sizeof(value))
 730                                     goto fail;
 731                             }
 732                         }
 733
 734                       size:
 735                         if (size == 0)
 736                             goto fail;
 737                         if (value[size - 1] == '\n') {
 738                             --size;
 739                             goto size;
 740                         }
 741
 742                         value[size] = '\0';
 743                         size = strlen(value);
 744                         pid = strtoul(value, &end, 0);
 745                         if (value + size != end) fail:
 746                             pid = _not(pid_t);
 747                         _syscall(pclose(pids));
 748                     }
 749
 750                     if (pid == _not(pid_t)) {
 751                         fprintf(stderr, "unable to find process `%s' using ps\n", arg);
 752                         return 1;
 753                     }
 754                 }
 755             } goto target;
 756 #endif
 757
 758             case 'r': {
 759                 //size_t size(strlen(arg));
 760
 761                 char *colon(strrchr(arg, ':'));
 762                 if (colon == NULL) {
 763                     fprintf(stderr, "missing colon in hostspec\n");
 764                     return 1;
 765                 }
 766
 767                 /*char *end;
 768                 port = strtoul(colon + 1, &end, 10);
 769                 if (end != arg + size) {
 770                     fprintf(stderr, "invalid port in hostspec\n");
 771                     return 1;
 772                 }*/
 773
 774                 host = arg;
 775                 *colon = '\0';
 776                 port = colon + 1;
 777             } goto target;
 778
 779             case 's':
 780                 strict_ = true;
 781             break;
 782         }
 783     } getopt:;
 784
 785     const char *script;
 786     int ind(state->ind);
 787
 788 #ifdef CY_ATTACH
 789     if (pid != _not(pid_t) && ind < argc - 1) {
 790         fprintf(stderr, "-p cannot set argv\n");
 791         return 1;
 792     }
 793 #endif
 794
 795     if (ind == argc)
 796         script = NULL;
 797     else {
 798 #ifdef CY_EXECUTE
 799         // XXX: const_cast?! wtf gcc :(
 800         CYSetArgs(argc - ind - 1, const_cast<const char **>(argv + ind + 1));
 801 #endif
 802         script = argv[ind];
 803         if (strcmp(script, "-") == 0)
 804             script = NULL;
 805     }
 806
 807 #ifdef CY_ATTACH
 808     if (pid == _not(pid_t))
 809         client_ = -1;
 810     else {
 811         int server(_syscall(socket(PF_UNIX, SOCK_STREAM, 0))); try {
 812             struct sockaddr_un address;
 813             memset(&address, 0, sizeof(address));
 814             address.sun_family = AF_UNIX;
 815
 816             sprintf(address.sun_path, "/tmp/.s.cy.%u", getpid());
 817
 818             _syscall(bind(server, reinterpret_cast<sockaddr *>(&address), SUN_LEN(&address)));
 819             _syscall(chmod(address.sun_path, 0777));
 820
 821             try {
 822                 _syscall(listen(server, 1));
 823                 InjectLibrary(pid);
 824                 client_ = _syscall(accept(server, NULL, NULL));
 825             } catch (...) {
 826                 // XXX: exception?
 827                 unlink(address.sun_path);
 828                 throw;
 829             }
 830         } catch (...) {
 831             _syscall(close(server));
 832             throw;
 833         }
 834     }
 835 #else
 836     client_ = -1;
 837 #endif
 838
 839     if (client_ == -1 && host != NULL && port != NULL) {
 840         struct addrinfo hints;
 841         memset(&hints, 0, sizeof(hints));
 842         hints.ai_family = AF_UNSPEC;
 843         hints.ai_socktype = SOCK_STREAM;
 844         hints.ai_protocol = 0;
 845         hints.ai_flags = 0;
 846
 847         struct addrinfo *infos;
 848         _syscall(getaddrinfo(host, port, &hints, &infos));
 849
 850         _assert(infos != NULL); try {
 851             for (struct addrinfo *info(infos); info != NULL; info = info->ai_next) {
 852                 int client(_syscall(socket(info->ai_family, info->ai_socktype, info->ai_protocol))); try {
 853                     _syscall(connect(client, info->ai_addr, info->ai_addrlen));
 854                     client_ = client;
 855                     break;
 856                 } catch (...) {
 857                     _syscall(close(client));
 858                     throw;
 859                 }
 860             }
 861         } catch (...) {
 862             freeaddrinfo(infos);
 863             throw;
 864         }
 865     }
 866
 867     if (script == NULL && tty)
 868         Console(options);
 869     else {
 870         CYLocalPool pool;
 871
 872         std::istream *stream;
 873         if (script == NULL) {
 874             stream = &std::cin;
 875             script = "<stdin>";
 876         } else {
 877             stream = new std::fstream(script, std::ios::in | std::ios::binary);
 878             _assert(!stream->fail());
 879         }
 880
 881         CYDriver driver(*stream, script);
 882         cy::parser parser(driver);
 883         Setup(driver, parser);
 884
 885         if (parser.parse() != 0 || !driver.errors_.empty()) {
 886             for (CYDriver::Errors::const_iterator i(driver.errors_.begin()); i != driver.errors_.end(); ++i)
 887                 std::cerr << i->location_.begin << ": " << i->message_ << std::endl;
 888         } else if (driver.program_ != NULL) {
 889             std::ostringstream str;
 890             CYOutput out(str, options);
 891             Setup(out, driver, options, true);
 892             out << *driver.program_;
 893             std::string code(str.str());
 894             if (compile)
 895                 std::cout << code;
 896             else
 897                 Run(client_, false, code, &std::cout);
 898         }
 899     }
 900
 901     apr_pool_destroy(pool);
 902
 903     return 0;
 904 }
 905
 906 int main(int argc, char const * const argv[], char const * const envp[]) {
 907     apr_status_t status(apr_app_initialize(&argc, &argv, &envp));
 908
 909     if (status != APR_SUCCESS) {
 910         fprintf(stderr, "apr_app_initialize() != APR_SUCCESS\n");
 911         return 1;
 912     } else try {
 913         return Main(argc, argv, envp);
 914     } catch (const CYException &error) {
 915         CYPool pool;
 916         fprintf(stderr, "%s\n", error.PoolCString(pool));
 917         return 1;
 918     }
 919 }