-/* Cycript - Remove Execution Server and Disassembler
- * Copyright (C) 2009 Jay Freeman (saurik)
+/* Cycript - Optimizing JavaScript Compiler/Runtime
+ * Copyright (C) 2009-2013 Jay Freeman (saurik)
*/
-/* Modified BSD License {{{ */
+/* GNU General Public License, Version 3 {{{ */
/*
- * Redistribution and use in source and binary
- * forms, with or without modification, are permitted
- * provided that the following conditions are met:
+ * Cycript is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published
+ * by the Free Software Foundation, either version 3 of the License,
+ * or (at your option) any later version.
*
- * 1. Redistributions of source code must retain the
- * above copyright notice, this list of conditions
- * and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the
- * above copyright notice, this list of conditions
- * and the following disclaimer in the documentation
- * and/or other materials provided with the
- * distribution.
- * 3. The name of the author may not be used to endorse
- * or promote products derived from this software
- * without specific prior written permission.
+ * Cycript is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
*
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS''
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
- * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
- * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
- * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
- * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
- * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
- * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-*/
+ * You should have received a copy of the GNU General Public License
+ * along with Cycript. If not, see <http://www.gnu.org/licenses/>.
+**/
/* }}} */
#include "cycript.hpp"
+#ifdef CY_EXECUTE
+#include "JavaScript.hpp"
+#endif
+
#include <cstdio>
#include <sstream>
#include <setjmp.h>
+#ifdef HAVE_READLINE_H
+#include <readline.h>
+#else
#include <readline/readline.h>
+#endif
+
+#ifdef HAVE_HISTORY_H
+#include <history.h>
+#else
#include <readline/history.h>
+#endif
#include <sys/mman.h>
#include <apr_getopt.h>
+#include <dlfcn.h>
+
+#include "Replace.hpp"
+#include "Display.hpp"
+
static volatile enum {
Working,
Parsing,
driver.strict_ = true;
}
-void Setup(CYOutput &out, CYDriver &driver) {
+void Setup(CYOutput &out, CYDriver &driver, CYOptions &options) {
out.pretty_ = pretty_;
-
- CYContext context(driver.pool_);
+ CYContext context(options);
driver.program_->Replace(context);
}
-void Run(int socket, const char *data, size_t size, FILE *fout = NULL, bool expand = false) {
- CYPool pool;
-
+static CYUTF8String Run(CYPool &pool, int client, CYUTF8String code) {
const char *json;
- if (socket == -1) {
+ size_t size;
+
+ if (client == -1) {
mode_ = Running;
#ifdef CY_EXECUTE
- json = CYExecute(pool, data);
+ json = CYExecute(pool, code);
#else
json = NULL;
#endif
mode_ = Working;
- if (json != NULL)
+ if (json == NULL)
+ size = 0;
+ else
size = strlen(json);
} else {
mode_ = Sending;
- CYSendAll(socket, &size, sizeof(size));
- CYSendAll(socket, data, size);
+ size = code.size;
+ CYSendAll(client, &size, sizeof(size));
+ CYSendAll(client, code.data, code.size);
mode_ = Waiting;
- CYRecvAll(socket, &size, sizeof(size));
+ CYRecvAll(client, &size, sizeof(size));
if (size == _not(size_t))
json = NULL;
else {
char *temp(new(pool) char[size + 1]);
- CYRecvAll(socket, temp, size);
+ CYRecvAll(client, temp, size);
temp[size] = '\0';
json = temp;
}
mode_ = Working;
}
- if (json != NULL && fout != NULL) {
- if (!expand || json[0] != '"' && json[0] != '\'')
- fputs(json, fout);
- else for (size_t i(0); i != size; ++i)
- if (json[i] != '\\')
- fputc(json[i], fout);
- else switch(json[++i]) {
- case '\0': goto done;
- case '\\': fputc('\\', fout); break;
- case '\'': fputc('\'', fout); break;
- case '"': fputc('"', fout); break;
- case 'b': fputc('\b', fout); break;
- case 'f': fputc('\f', fout); break;
- case 'n': fputc('\n', fout); break;
- case 'r': fputc('\r', fout); break;
- case 't': fputc('\t', fout); break;
- case 'v': fputc('\v', fout); break;
- default: fputc('\\', fout); --i; break;
- }
+ return CYUTF8String(json, size);
+}
- done:
- fputs("\n", fout);
- fflush(fout);
- }
+static CYUTF8String Run(CYPool &pool, int client, const std::string &code) {
+ return Run(pool, client, CYUTF8String(code.c_str(), code.size()));
+}
+
+static std::ostream *out_;
+
+static void Write(bool syntax, const char *data, size_t size, std::ostream &out) {
+ if (syntax)
+ CYLexerHighlight(data, size, out);
+ else
+ out.write(data, size);
+}
+
+static void Output(bool syntax, CYUTF8String json, std::ostream *out, bool expand = false) {
+ const char *data(json.data);
+ size_t size(json.size);
+
+ if (data == NULL || out == NULL)
+ return;
+
+ if (!expand ||
+ data[0] != '@' && data[0] != '"' && data[0] != '\'' ||
+ data[0] == '@' && data[1] != '"' && data[1] != '\''
+ )
+ Write(syntax, data, size, *out);
+ else for (size_t i(0); i != size; ++i)
+ if (data[i] != '\\')
+ *out << data[i];
+ else switch(data[++i]) {
+ case '\0': goto done;
+ case '\\': *out << '\\'; break;
+ case '\'': *out << '\''; break;
+ case '"': *out << '"'; break;
+ case 'b': *out << '\b'; break;
+ case 'f': *out << '\f'; break;
+ case 'n': *out << '\n'; break;
+ case 'r': *out << '\r'; break;
+ case 't': *out << '\t'; break;
+ case 'v': *out << '\v'; break;
+ default: *out << '\\'; --i; break;
+ }
+
+ done:
+ *out << std::endl;
+}
+
+static void Run(int client, bool syntax, const char *data, size_t size, std::ostream *out = NULL, bool expand = false) {
+ CYPool pool;
+ Output(syntax, Run(pool, client, CYUTF8String(data, size)), out, expand);
+}
+
+static void Run(int client, bool syntax, std::string &code, std::ostream *out = NULL, bool expand = false) {
+ Run(client, syntax, code.c_str(), code.size(), out, expand);
}
-void Run(int socket, std::string &code, FILE *fout = NULL, bool expand = false) {
- Run(socket, code.c_str(), code.size(), fout, expand);
+int (*append_history$)(int, const char *);
+
+static std::string command_;
+
+static CYExpression *ParseExpression(CYUTF8String code) {
+ std::stringstream stream;
+ stream << '(' << code << ')';
+ CYDriver driver(stream);
+
+ cy::parser parser(driver);
+ Setup(driver, parser);
+
+ if (parser.parse() != 0 || !driver.errors_.empty())
+ return NULL;
+
+ CYOptions options;
+ CYContext context(options);
+
+ // XXX: this could be replaced with a CYStatement::Primitive()
+ if (CYExpress *express = dynamic_cast<CYExpress *>(driver.program_->statements_))
+ return express->expression_->Primitive(context);
+
+ return NULL;
}
-static void Console(apr_pool_t *pool, int socket) {
+static int client_;
+
+static char **Complete(const char *word, int start, int end) {
+ rl_attempted_completion_over = TRUE;
+
+ CYLocalPool pool;
+
+ std::string line(rl_line_buffer, start);
+ std::istringstream stream(command_ + line);
+ CYDriver driver(stream);
+
+ driver.auto_ = true;
+
+ cy::parser parser(driver);
+ Setup(driver, parser);
+
+ if (parser.parse() != 0 || !driver.errors_.empty())
+ return NULL;
+
+ if (driver.mode_ == CYDriver::AutoNone)
+ return NULL;
+
+ CYExpression *expression;
+
+ CYOptions options;
+ CYContext context(options);
+
+ std::ostringstream prefix;
+
+ switch (driver.mode_) {
+ case CYDriver::AutoPrimary:
+ expression = $ CYThis();
+ break;
+
+ case CYDriver::AutoDirect:
+ expression = driver.context_;
+ break;
+
+ case CYDriver::AutoIndirect:
+ expression = $ CYIndirect(driver.context_);
+ break;
+
+ case CYDriver::AutoMessage: {
+ CYDriver::Context &thing(driver.contexts_.back());
+ expression = $M($C1($V("object_getClass"), thing.context_), $S("messages"));
+ for (CYDriver::Context::Words::const_iterator part(thing.words_.begin()); part != thing.words_.end(); ++part)
+ prefix << (*part)->word_ << ':';
+ } break;
+
+ default:
+ _assert(false);
+ }
+
+ std::string begin(prefix.str());
+
+ driver.program_ = $ CYProgram($ CYExpress($C3(ParseExpression(
+ " function(object, prefix, word) {\n"
+ " var names = [];\n"
+ " var before = prefix.length;\n"
+ " prefix += word;\n"
+ " var entire = prefix.length;\n"
+ " for (name in object)\n"
+ " if (name.substring(0, entire) == prefix)\n"
+ " names.push(name.substr(before));\n"
+ " return names;\n"
+ " }\n"
+ ), expression, $S(begin.c_str()), $S(word))));
+
+ driver.program_->Replace(context);
+
+ std::ostringstream str;
+ CYOutput out(str, options);
+ out << *driver.program_;
+
+ std::string code(str.str());
+ CYUTF8String json(Run(pool, client_, code));
+ // XXX: if this fails we should not try to parse it
+
+ CYExpression *result(ParseExpression(json));
+ if (result == NULL)
+ return NULL;
+
+ CYArray *array(dynamic_cast<CYArray *>(result));
+
+ if (array == NULL) {
+ *out_ << '\n';
+ Output(false, json, out_);
+ rl_forced_update_display();
+ return NULL;
+ }
+
+ // XXX: use an std::set?
+ typedef std::vector<std::string> Completions;
+ Completions completions;
+
+ std::string common;
+ bool rest(false);
+
+ CYForEach (element, array->elements_) {
+ CYString *string(dynamic_cast<CYString *>(element->value_));
+ _assert(string != NULL);
+
+ std::string completion;
+ if (string->size_ != 0)
+ completion.assign(string->value_, string->size_);
+ else if (driver.mode_ == CYDriver::AutoMessage)
+ completion = "]";
+ else
+ continue;
+
+ completions.push_back(completion);
+
+ if (!rest) {
+ common = completion;
+ rest = true;
+ } else {
+ size_t limit(completion.size()), size(common.size());
+ if (size > limit)
+ common = common.substr(0, limit);
+ else
+ limit = size;
+ for (limit = 0; limit != size; ++limit)
+ if (common[limit] != completion[limit])
+ break;
+ if (limit != size)
+ common = common.substr(0, limit);
+ }
+ }
+
+ size_t count(completions.size());
+ if (count == 0)
+ return NULL;
+
+ size_t colon(common.find(':'));
+ if (colon != std::string::npos)
+ common = common.substr(0, colon + 1);
+ if (completions.size() == 1)
+ common += ' ';
+
+ char **results(reinterpret_cast<char **>(malloc(sizeof(char *) * (count + 2))));
+
+ results[0] = strdup(common.c_str());
+ size_t index(0);
+ for (Completions::const_iterator i(completions.begin()); i != completions.end(); ++i)
+ results[++index] = strdup(i->c_str());
+ results[count + 1] = NULL;
+
+ return results;
+}
+
+// need char *, not const char *
+static char name_[] = "cycript";
+static char break_[] = " \t\n\"\\'`@$><=;|&{(" ")}" ".:[]";
+
+static void Console(CYOptions &options) {
+ CYPool pool;
+
passwd *passwd;
if (const char *username = getenv("LOGNAME"))
passwd = getpwnam(username);
const char *histfile(apr_psprintf(pool, "%s/history", basedir));
size_t histlines(0);
+ rl_initialize();
+ rl_readline_name = name_;
+
mkdir(basedir, 0700);
read_history(histfile);
bool bypass(false);
bool debug(false);
bool expand(false);
+ bool syntax(true);
+
+ out_ = &std::cout;
- FILE *fout(stdout);
+ // rl_completer_word_break_characters is broken in libedit
+ rl_basic_word_break_characters = break_;
- rl_bind_key('\t', rl_insert);
+ rl_completer_word_break_characters = break_;
+ rl_attempted_completion_function = &Complete;
+ rl_bind_key('\t', rl_complete);
struct sigaction action;
sigemptyset(&action.sa_mask);
sigaction(SIGINT, &action, NULL);
restart: for (;;) {
- std::string command;
+ command_.clear();
std::vector<std::string> lines;
bool extra(false);
if (setjmp(ctrlc_) != 0) {
mode_ = Working;
- fputs("\n", fout);
- fflush(fout);
+ *out_ << std::endl;
goto restart;
}
read:
+
+#if RL_READLINE_VERSION >= 0x0600
+ if (syntax) {
+ rl_prep_term_function = CYDisplayStart;
+ rl_redisplay_function = CYDisplayUpdate;
+ rl_deprep_term_function = CYDisplayFinish;
+ } else {
+ rl_prep_term_function = rl_prep_terminal;
+ rl_redisplay_function = rl_redisplay;
+ rl_deprep_term_function = rl_deprep_terminal;
+ }
+#endif
+
mode_ = Parsing;
char *line(readline(prompt));
mode_ = Working;
+
if (line == NULL)
break;
+ if (line[0] == '\0')
+ goto read;
if (!extra) {
extra = true;
std::string data(line + 1);
if (data == "bypass") {
bypass = !bypass;
- fprintf(fout, "bypass == %s\n", bypass ? "true" : "false");
- fflush(fout);
+ *out_ << "bypass == " << (bypass ? "true" : "false") << std::endl;
} else if (data == "debug") {
debug = !debug;
- fprintf(fout, "debug == %s\n", debug ? "true" : "false");
- fflush(fout);
+ *out_ << "debug == " << (debug ? "true" : "false") << std::endl;
} else if (data == "expand") {
expand = !expand;
- fprintf(fout, "expand == %s\n", expand ? "true" : "false");
- fflush(fout);
+ *out_ << "expand == " << (expand ? "true" : "false") << std::endl;
+ } else if (data == "syntax") {
+ syntax = !syntax;
+ *out_ << "syntax == " << (syntax ? "true" : "false") << std::endl;
}
add_history(line);
++histlines;
}
}
- command += line;
+ command_ += line;
char *begin(line), *end(line + strlen(line));
while (char *nl = reinterpret_cast<char *>(memchr(begin, '\n', end - begin))) {
std::string code;
if (bypass)
- code = command;
+ code = command_;
else {
- CYDriver driver("");
+ CYLocalPool pool;
+
+ std::istringstream stream(command_);
+ CYDriver driver(stream);
+
cy::parser parser(driver);
Setup(driver, parser);
- driver.data_ = command.c_str();
- driver.size_ = command.size();
-
if (parser.parse() != 0 || !driver.errors_.empty()) {
for (CYDriver::Errors::const_iterator error(driver.errors_.begin()); error != driver.errors_.end(); ++error) {
cy::position begin(error->location_.begin);
- if (begin.line != lines.size() || begin.column - 1 != lines.back().size() || error->warning_) {
+ if (begin.line != lines.size() || begin.column < lines.back().size() || error->warning_) {
cy::position end(error->location_.end);
if (begin.line != lines.size()) {
}
std::cerr << "....";
- for (size_t i(0); i != begin.column - 1; ++i)
+ for (size_t i(0); i != begin.column; ++i)
std::cerr << '.';
if (begin.line != end.line || begin.column == end.column)
std::cerr << '^';
std::cerr << " | ";
std::cerr << error->message_ << std::endl;
- add_history(command.c_str());
+ add_history(command_.c_str());
++histlines;
goto restart;
}
driver.errors_.clear();
- command += '\n';
+ command_ += '\n';
prompt = "cy> ";
goto read;
}
if (driver.program_ == NULL)
goto restart;
- if (socket != -1)
- code = command;
+ if (client_ != -1)
+ code = command_;
else {
std::ostringstream str;
- CYOutput out(str);
- Setup(out, driver);
+ CYOutput out(str, options);
+ Setup(out, driver, options);
out << *driver.program_;
code = str.str();
}
}
- add_history(command.c_str());
+ add_history(command_.c_str());
++histlines;
- if (debug)
- std::cout << code << std::endl;
+ if (debug) {
+ Write(syntax, code.c_str(), code.size(), std::cout);
+ std::cout << std::endl;
+ }
- Run(socket, code, fout, expand);
+ Run(client_, syntax, code, out_, expand);
}
- _syscall(close(_syscall(open(histfile, O_CREAT | O_WRONLY, 0600))));
- append_history(histlines, histfile);
+ if (append_history$ != NULL) {
+ _syscall(close(_syscall(open(histfile, O_CREAT | O_WRONLY, 0600))));
+ (*append_history$)(histlines, histfile);
+ } else {
+ write_history(histfile);
+ }
- fputs("\n", fout);
- fflush(fout);
+ *out_ << std::endl;
}
static void *Map(const char *path, size_t *psize) {
return base;
}
-int main(int argc, char const * const argv[], char const * const envp[]) {
- _aprcall(apr_app_initialize(&argc, &argv, &envp));
+void InjectLibrary(pid_t pid);
+int Main(int argc, char const * const argv[], char const * const envp[]) {
bool tty(isatty(STDIN_FILENO));
bool compile(false);
+ CYOptions options;
+
+ append_history$ = (int (*)(int, const char *)) (dlsym(RTLD_DEFAULT, "append_history"));
#ifdef CY_ATTACH
pid_t pid(_not(pid_t));
fprintf(stderr,
"usage: cycript [-c]"
#ifdef CY_ATTACH
- " [-p <pid>]"
+ " [-p <pid|name>]"
#endif
" [<script> [<arg>...]]\n"
);
case 'g':
if (false);
+ else if (strcmp(arg, "rename") == 0)
+ options.verbose_ = true;
#if YYDEBUG
else if (strcmp(arg, "bison") == 0)
bison_ = true;
case 'p': {
size_t size(strlen(arg));
char *end;
+
pid = strtoul(arg, &end, 0);
if (arg + size != end) {
- fprintf(stderr, "invalid pid for -p\n");
- return 1;
+ // XXX: arg needs to be escaped in some horrendous way of doom
+ const char *command(apr_psprintf(pool, "ps axc|sed -e '/^ *[0-9]/{s/^ *\\([0-9]*\\)\\( *[^ ]*\\)\\{3\\} *-*\\([^ ]*\\)/\\3 \\1/;/^%s /{s/^[^ ]* //;q;};};d'", arg));
+
+ if (FILE *pids = popen(command, "r")) {
+ char value[32];
+ size = 0;
+
+ for (;;) {
+ size_t read(fread(value + size, 1, sizeof(value) - size, pids));
+ if (read == 0)
+ break;
+ else {
+ size += read;
+ if (size == sizeof(value)) {
+ pid = _not(pid_t);
+ goto fail;
+ }
+ }
+ }
+
+ size:
+ if (size == 0)
+ goto fail;
+ if (value[size - 1] == '\n') {
+ --size;
+ goto size;
+ }
+
+ value[size] = '\0';
+ size = strlen(value);
+ pid = strtoul(value, &end, 0);
+ if (value + size != end) fail:
+ pid = _not(pid_t);
+ _syscall(pclose(pids));
+ }
+
+ if (pid == _not(pid_t)) {
+ fprintf(stderr, "invalid pid for -p\n");
+ return 1;
+ }
}
} break;
#endif
}
#endif
- int socket;
-
#ifdef CY_ATTACH
if (pid == _not(pid_t))
- socket = -1;
+ client_ = -1;
else {
- socket = _syscall(::socket(PF_UNIX, SOCK_STREAM, 0));
-
- struct sockaddr_un address;
- memset(&address, 0, sizeof(address));
- address.sun_family = AF_UNIX;
- sprintf(address.sun_path, "/tmp/.s.cy.%u", pid);
-
- _syscall(connect(socket, reinterpret_cast<sockaddr *>(&address), SUN_LEN(&address)));
+ int server(_syscall(socket(PF_UNIX, SOCK_STREAM, 0))); try {
+ struct sockaddr_un address;
+ memset(&address, 0, sizeof(address));
+ address.sun_family = AF_UNIX;
+
+ sprintf(address.sun_path, "/tmp/.s.cy.%u", getpid());
+
+ _syscall(bind(server, reinterpret_cast<sockaddr *>(&address), SUN_LEN(&address)));
+ _syscall(chmod(address.sun_path, 0777));
+
+ try {
+ _syscall(listen(server, 1));
+ InjectLibrary(pid);
+ client_ = _syscall(accept(server, NULL, NULL));
+ } catch (...) {
+ // XXX: exception?
+ unlink(address.sun_path);
+ throw;
+ }
+ } catch (...) {
+ _syscall(close(server));
+ throw;
+ }
}
#else
- socket = -1;
+ client_ = -1;
#endif
if (script == NULL && tty)
- Console(pool, socket);
+ Console(options);
else {
- CYDriver driver(script ?: "<stdin>");
- cy::parser parser(driver);
- Setup(driver, parser);
+ CYLocalPool pool;
char *start, *end;
+ std::istream *indirect;
if (script == NULL) {
start = NULL;
end = NULL;
-
- driver.file_ = stdin;
+ indirect = &std::cin;
} else {
size_t size;
start = reinterpret_cast<char *>(Map(script, &size));
start = end;
}
- driver.data_ = start;
- driver.size_ = end - start;
+ indirect = NULL;
}
+ CYStream direct(start, end);
+ std::istream &stream(indirect == NULL ? direct : *indirect);
+ CYDriver driver(stream, script ?: "<stdin>");
+
+ cy::parser parser(driver);
+ Setup(driver, parser);
+
if (parser.parse() != 0 || !driver.errors_.empty()) {
for (CYDriver::Errors::const_iterator i(driver.errors_.begin()); i != driver.errors_.end(); ++i)
std::cerr << i->location_.begin << ": " << i->message_ << std::endl;
} else if (driver.program_ != NULL)
- if (socket != -1)
- Run(socket, start, end - start, stdout);
- else {
+ if (client_ != -1) {
+ // XXX: this code means that you can't pipe to another process
+ std::string code(start, end-start);
+ Run(client_, false, code, &std::cout);
+ } else {
std::ostringstream str;
- CYOutput out(str);
- Setup(out, driver);
+ CYOutput out(str, options);
+ Setup(out, driver, options);
out << *driver.program_;
std::string code(str.str());
if (compile)
std::cout << code;
else
- Run(socket, code, stdout);
+ Run(client_, false, code, &std::cout);
}
}
return 0;
}
+
+int main(int argc, char const * const argv[], char const * const envp[]) {
+ apr_status_t status(apr_app_initialize(&argc, &argv, &envp));
+
+ if (status != APR_SUCCESS) {
+ fprintf(stderr, "apr_app_initialize() != APR_SUCCESS\n");
+ return 1;
+ } else try {
+ return Main(argc, argv, envp);
+ } catch (const CYException &error) {
+ CYPool pool;
+ fprintf(stderr, "%s\n", error.PoolCString(pool));
+ return 1;
+ }
+}
projects / cycript.git / blobdiff