In trampoline, make $strlcpy not crash given NULL.

[cycript.git] / Console.cpp

diff --git a/Console.cpp b/Console.cpp
index f93e090784629ccc10a3868e979cc8fcc559e353..0840ca5248b61141d90302af5cf81f16a06a0061 100644 (file)
--- a/Console.cpp
+++ b/Console.cpp
@@ -808,29 +808,49 @@ int Main(int argc, char const * const argv[], char const * const envp[]) {
     if (pid == _not(pid_t))
         client_ = -1;
     else {
     if (pid == _not(pid_t))
         client_ = -1;
     else {

-        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;
+        struct Socket {
+            int fd_;
+
+            Socket(int fd) :
+                fd_(fd)
+            {

             }
             }

-        } catch (...) {
-            _syscall(close(server));
-            throw;
-        }
+
+            ~Socket() {
+                close(fd_);
+            }
+
+            operator int() {
+                return fd_;
+            }
+        } server(_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", getpid());
+        unlink(address.sun_path);
+
+        struct File {
+            const char *path_;
+
+            File(const char *path) :
+                path_(path)
+            {
+            }
+
+            ~File() {
+                unlink(path_);
+            }
+        } file(address.sun_path);
+
+        _syscall(bind(server, reinterpret_cast<sockaddr *>(&address), SUN_LEN(&address)));
+        _syscall(chmod(address.sun_path, 0777));
+
+        _syscall(listen(server, 1));
+        InjectLibrary(pid);
+        client_ = _syscall(accept(server, NULL, NULL));

     }
 #else
     client_ = -1;
     }
 #else
     client_ = -1;