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     CYOptions options;
 620
 621     append_history$ = (int (*)(int, const char *)) (dlsym(RTLD_DEFAULT, "append_history"));
 622
 623 #ifdef CY_ATTACH
 624     pid_t pid(_not(pid_t));
 625 #endif
 626
 627     const char *host(NULL);
 628     const char *port(NULL);
 629
 630     apr_getopt_t *state;
 631     _aprcall(apr_getopt_init(&state, pool, argc, argv));
 632
 633     for (;;) {
 634         char opt;
 635         const char *arg;
 636
 637         apr_status_t status(apr_getopt(state,
 638             "cg:n:"
 639 #ifdef CY_ATTACH
 640             "p:"
 641 #endif
 642             "r:"
 643             "s"
 644         , &opt, &arg));
 645
 646         switch (status) {
 647             case APR_EOF:
 648                 goto getopt;
 649             case APR_BADCH:
 650             case APR_BADARG:
 651                 fprintf(stderr,
 652                     "usage: cycript [-c]"
 653 #ifdef CY_ATTACH
 654                     " [-p <pid|name>]"
 655 #endif
 656                     " [-r <host:port>]"
 657                     " [<script> [<arg>...]]\n"
 658                 );
 659                 return 1;
 660             default:
 661                 _aprcall(status);
 662         }
 663
 664         switch (opt) {
 665             case 'c':
 666                 compile = true;
 667             break;
 668
 669             case 'g':
 670                 if (false);
 671                 else if (strcmp(arg, "rename") == 0)
 672                     options.verbose_ = true;
 673 #if YYDEBUG
 674                 else if (strcmp(arg, "bison") == 0)
 675                     bison_ = true;
 676 #endif
 677                 else {
 678                     fprintf(stderr, "invalid name for -g\n");
 679                     return 1;
 680                 }
 681             break;
 682
 683             case 'n':
 684                 if (false);
 685                 else if (strcmp(arg, "minify") == 0)
 686                     pretty_ = true;
 687                 else {
 688                     fprintf(stderr, "invalid name for -n\n");
 689                     return 1;
 690                 }
 691             break;
 692
 693 #ifdef CY_ATTACH
 694             case 'p': {
 695                 size_t size(strlen(arg));
 696                 char *end;
 697
 698                 pid = strtoul(arg, &end, 0);
 699                 if (arg + size != end) {
 700                     // XXX: arg needs to be escaped in some horrendous way of doom
 701                     const char *command(apr_pstrcat(pool, "ps axc|sed -e '/^ *[0-9]/{s/^ *\\([0-9]*\\)\\( *[^ ]*\\)\\{3\\} *-*\\([^ ]*\\)/\\3 \\1/;/^", arg, " /{s/^[^ ]* //;q;};};d'", NULL));
 702
 703                     if (FILE *pids = popen(command, "r")) {
 704                         char value[32];
 705                         size = 0;
 706
 707                         for (;;) {
 708                             size_t read(fread(value + size, 1, sizeof(value) - size, pids));
 709                             if (read == 0)
 710                                 break;
 711                             else {
 712                                 size += read;
 713                                 if (size == sizeof(value))
 714                                     goto fail;
 715                             }
 716                         }
 717
 718                       size:
 719                         if (size == 0)
 720                             goto fail;
 721                         if (value[size - 1] == '\n') {
 722                             --size;
 723                             goto size;
 724                         }
 725
 726                         value[size] = '\0';
 727                         size = strlen(value);
 728                         pid = strtoul(value, &end, 0);
 729                         if (value + size != end) fail:
 730                             pid = _not(pid_t);
 731                         _syscall(pclose(pids));
 732                     }
 733
 734                     if (pid == _not(pid_t)) {
 735                         fprintf(stderr, "unable to find process `%s' using ps\n", arg);
 736                         return 1;
 737                     }
 738                 }
 739             } break;
 740 #endif
 741
 742             case 'r': {
 743                 //size_t size(strlen(arg));
 744
 745                 char *colon(strrchr(arg, ':'));
 746                 if (colon == NULL) {
 747                     fprintf(stderr, "missing colon in hostspec\n");
 748                     return 1;
 749                 }
 750
 751                 /*char *end;
 752                 port = strtoul(colon + 1, &end, 10);
 753                 if (end != arg + size) {
 754                     fprintf(stderr, "invalid port in hostspec\n");
 755                     return 1;
 756                 }*/
 757
 758                 host = arg;
 759                 *colon = '\0';
 760                 port = colon + 1;
 761             } break;
 762
 763             case 's':
 764                 strict_ = true;
 765             break;
 766         }
 767     } getopt:;
 768
 769     const char *script;
 770     int ind(state->ind);
 771
 772 #ifdef CY_ATTACH
 773     if (pid != _not(pid_t) && ind < argc - 1) {
 774         fprintf(stderr, "-p cannot set argv\n");
 775         return 1;
 776     }
 777
 778     if (pid != _not(pid_t) && compile) {
 779         fprintf(stderr, "-p conflicts with -c\n");
 780         return 1;
 781     }
 782 #endif
 783
 784     if (ind == argc)
 785         script = NULL;
 786     else {
 787 #ifdef CY_EXECUTE
 788         // XXX: const_cast?! wtf gcc :(
 789         CYSetArgs(argc - ind - 1, const_cast<const char **>(argv + ind + 1));
 790 #endif
 791         script = argv[ind];
 792         if (strcmp(script, "-") == 0)
 793             script = NULL;
 794     }
 795
 796 #ifdef CY_ATTACH
 797     if (pid != _not(pid_t) && script == NULL && !tty) {
 798         fprintf(stderr, "non-terminal attaching to remote console\n");
 799         return 1;
 800     }
 801 #endif
 802
 803 #ifdef CY_ATTACH
 804     if (pid == _not(pid_t))
 805         client_ = -1;
 806     else {
 807         int server(_syscall(socket(PF_UNIX, SOCK_STREAM, 0))); try {
 808             struct sockaddr_un address;
 809             memset(&address, 0, sizeof(address));
 810             address.sun_family = AF_UNIX;
 811
 812             sprintf(address.sun_path, "/tmp/.s.cy.%u", getpid());
 813
 814             _syscall(bind(server, reinterpret_cast<sockaddr *>(&address), SUN_LEN(&address)));
 815             _syscall(chmod(address.sun_path, 0777));
 816
 817             try {
 818                 _syscall(listen(server, 1));
 819                 InjectLibrary(pid);
 820                 client_ = _syscall(accept(server, NULL, NULL));
 821             } catch (...) {
 822                 // XXX: exception?
 823                 unlink(address.sun_path);
 824                 throw;
 825             }
 826         } catch (...) {
 827             _syscall(close(server));
 828             throw;
 829         }
 830     }
 831 #else
 832     client_ = -1;
 833 #endif
 834
 835     if (client_ == -1 && host != NULL && port != NULL) {
 836         struct addrinfo hints;
 837         memset(&hints, 0, sizeof(hints));
 838         hints.ai_family = AF_UNSPEC;
 839         hints.ai_socktype = SOCK_STREAM;
 840         hints.ai_protocol = 0;
 841         hints.ai_flags = 0;
 842
 843         struct addrinfo *infos;
 844         _syscall(getaddrinfo(host, port, &hints, &infos));
 845
 846         _assert(infos != NULL); try {
 847             for (struct addrinfo *info(infos); info != NULL; info = info->ai_next) {
 848                 int client(_syscall(socket(info->ai_family, info->ai_socktype, info->ai_protocol))); try {
 849                     _syscall(connect(client, info->ai_addr, info->ai_addrlen));
 850                     client_ = client;
 851                     break;
 852                 } catch (...) {
 853                     _syscall(close(client));
 854                     throw;
 855                 }
 856             }
 857         } catch (...) {
 858             freeaddrinfo(infos);
 859             throw;
 860         }
 861     }
 862
 863     if (script == NULL && tty)
 864         Console(options);
 865     else {
 866         CYLocalPool pool;
 867
 868         std::istream *stream;
 869         if (script == NULL) {
 870             stream = &std::cin;
 871             script = "<stdin>";
 872         } else {
 873             stream = new std::fstream(script, std::ios::in | std::ios::binary);
 874             _assert(!stream->fail());
 875         }
 876
 877         CYDriver driver(*stream, script);
 878         cy::parser parser(driver);
 879         Setup(driver, parser);
 880
 881         if (parser.parse() != 0 || !driver.errors_.empty()) {
 882             for (CYDriver::Errors::const_iterator i(driver.errors_.begin()); i != driver.errors_.end(); ++i)
 883                 std::cerr << i->location_.begin << ": " << i->message_ << std::endl;
 884         } else if (driver.program_ != NULL) {
 885             std::ostringstream str;
 886             CYOutput out(str, options);
 887             Setup(out, driver, options, true);
 888             out << *driver.program_;
 889             std::string code(str.str());
 890             if (compile)
 891                 std::cout << code;
 892             else
 893                 Run(client_, false, code, &std::cout);
 894         }
 895     }
 896
 897     apr_pool_destroy(pool);
 898
 899     return 0;
 900 }
 901
 902 int main(int argc, char const * const argv[], char const * const envp[]) {
 903     apr_status_t status(apr_app_initialize(&argc, &argv, &envp));
 904
 905     if (status != APR_SUCCESS) {
 906         fprintf(stderr, "apr_app_initialize() != APR_SUCCESS\n");
 907         return 1;
 908     } else try {
 909         return Main(argc, argv, envp);
 910     } catch (const CYException &error) {
 911         CYPool pool;
 912         fprintf(stderr, "%s\n", error.PoolCString(pool));
 913         return 1;
 914     }
 915 }