1 //===-- debugserver.cpp -----------------------------------------*- C++ -*-===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 #include <sys/socket.h> 11 #include <sys/types.h> 12 #include <errno.h> 13 #include <getopt.h> 14 #include <netinet/in.h> 15 #include <sys/select.h> 16 #include <sys/sysctl.h> 17 #include <string> 18 #include <vector> 19 #include <asl.h> 20 #include <arpa/inet.h> 21 #include <netdb.h> 22 #include <netinet/in.h> 23 #include <netinet/tcp.h> 24 #include <sys/un.h> 25 #include <sys/types.h> 26 27 #include "CFString.h" 28 #include "DNB.h" 29 #include "DNBLog.h" 30 #include "DNBTimer.h" 31 #include "PseudoTerminal.h" 32 #include "RNBContext.h" 33 #include "RNBServices.h" 34 #include "RNBSocket.h" 35 #include "RNBRemote.h" 36 #include "SysSignal.h" 37 38 // Global PID in case we get a signal and need to stop the process... 39 nub_process_t g_pid = INVALID_NUB_PROCESS; 40 41 //---------------------------------------------------------------------- 42 // Run loop modes which determine which run loop function will be called 43 //---------------------------------------------------------------------- 44 typedef enum 45 { 46 eRNBRunLoopModeInvalid = 0, 47 eRNBRunLoopModeGetStartModeFromRemoteProtocol, 48 eRNBRunLoopModeInferiorAttaching, 49 eRNBRunLoopModeInferiorLaunching, 50 eRNBRunLoopModeInferiorExecuting, 51 eRNBRunLoopModePlatformMode, 52 eRNBRunLoopModeExit 53 } RNBRunLoopMode; 54 55 56 //---------------------------------------------------------------------- 57 // Global Variables 58 //---------------------------------------------------------------------- 59 RNBRemoteSP g_remoteSP; 60 static int g_lockdown_opt = 0; 61 static int g_applist_opt = 0; 62 static nub_launch_flavor_t g_launch_flavor = eLaunchFlavorDefault; 63 int g_disable_aslr = 0; 64 65 int g_isatty = 0; 66 67 #define RNBLogSTDOUT(fmt, ...) do { if (g_isatty) { fprintf(stdout, fmt, ## __VA_ARGS__); } else { _DNBLog(0, fmt, ## __VA_ARGS__); } } while (0) 68 #define RNBLogSTDERR(fmt, ...) do { if (g_isatty) { fprintf(stderr, fmt, ## __VA_ARGS__); } else { _DNBLog(0, fmt, ## __VA_ARGS__); } } while (0) 69 70 //---------------------------------------------------------------------- 71 // Get our program path and arguments from the remote connection. 72 // We will need to start up the remote connection without a PID, get the 73 // arguments, wait for the new process to finish launching and hit its 74 // entry point, and then return the run loop mode that should come next. 75 //---------------------------------------------------------------------- 76 RNBRunLoopMode 77 RNBRunLoopGetStartModeFromRemote (RNBRemote* remote) 78 { 79 std::string packet; 80 81 if (remote) 82 { 83 RNBContext& ctx = remote->Context(); 84 uint32_t event_mask = RNBContext::event_read_packet_available | 85 RNBContext::event_read_thread_exiting; 86 87 // Spin waiting to get the A packet. 88 while (1) 89 { 90 DNBLogThreadedIf (LOG_RNB_MAX, "%s ctx.Events().WaitForSetEvents( 0x%08x ) ...",__FUNCTION__, event_mask); 91 nub_event_t set_events = ctx.Events().WaitForSetEvents(event_mask); 92 DNBLogThreadedIf (LOG_RNB_MAX, "%s ctx.Events().WaitForSetEvents( 0x%08x ) => 0x%08x", __FUNCTION__, event_mask, set_events); 93 94 if (set_events & RNBContext::event_read_thread_exiting) 95 { 96 RNBLogSTDERR ("error: packet read thread exited.\n"); 97 return eRNBRunLoopModeExit; 98 } 99 100 if (set_events & RNBContext::event_read_packet_available) 101 { 102 rnb_err_t err = rnb_err; 103 RNBRemote::PacketEnum type; 104 105 err = remote->HandleReceivedPacket (&type); 106 107 // check if we tried to attach to a process 108 if (type == RNBRemote::vattach || type == RNBRemote::vattachwait || type == RNBRemote::vattachorwait) 109 { 110 if (err == rnb_success) 111 { 112 RNBLogSTDOUT ("Attach succeeded, ready to debug.\n"); 113 return eRNBRunLoopModeInferiorExecuting; 114 } 115 else 116 { 117 RNBLogSTDERR ("error: attach failed.\n"); 118 return eRNBRunLoopModeExit; 119 } 120 } 121 122 if (err == rnb_success) 123 { 124 // If we got our arguments we are ready to launch using the arguments 125 // and any environment variables we received. 126 if (type == RNBRemote::set_argv) 127 { 128 return eRNBRunLoopModeInferiorLaunching; 129 } 130 } 131 else if (err == rnb_not_connected) 132 { 133 RNBLogSTDERR ("error: connection lost.\n"); 134 return eRNBRunLoopModeExit; 135 } 136 else 137 { 138 // a catch all for any other gdb remote packets that failed 139 DNBLogThreadedIf (LOG_RNB_MINIMAL, "%s Error getting packet.",__FUNCTION__); 140 continue; 141 } 142 143 DNBLogThreadedIf (LOG_RNB_MINIMAL, "#### %s", __FUNCTION__); 144 } 145 else 146 { 147 DNBLogThreadedIf (LOG_RNB_MINIMAL, "%s Connection closed before getting \"A\" packet.", __FUNCTION__); 148 return eRNBRunLoopModeExit; 149 } 150 } 151 } 152 return eRNBRunLoopModeExit; 153 } 154 155 156 //---------------------------------------------------------------------- 157 // This run loop mode will wait for the process to launch and hit its 158 // entry point. It will currently ignore all events except for the 159 // process state changed event, where it watches for the process stopped 160 // or crash process state. 161 //---------------------------------------------------------------------- 162 RNBRunLoopMode 163 RNBRunLoopLaunchInferior (RNBRemote *remote, const char *stdin_path, const char *stdout_path, const char *stderr_path, bool no_stdio) 164 { 165 RNBContext& ctx = remote->Context(); 166 167 // The Process stuff takes a c array, the RNBContext has a vector... 168 // So make up a c array. 169 170 DNBLogThreadedIf (LOG_RNB_MINIMAL, "%s Launching '%s'...", __FUNCTION__, ctx.ArgumentAtIndex(0)); 171 172 size_t inferior_argc = ctx.ArgumentCount(); 173 // Initialize inferior_argv with inferior_argc + 1 NULLs 174 std::vector<const char *> inferior_argv(inferior_argc + 1, NULL); 175 176 size_t i; 177 for (i = 0; i < inferior_argc; i++) 178 inferior_argv[i] = ctx.ArgumentAtIndex(i); 179 180 // Pass the environment array the same way: 181 182 size_t inferior_envc = ctx.EnvironmentCount(); 183 // Initialize inferior_argv with inferior_argc + 1 NULLs 184 std::vector<const char *> inferior_envp(inferior_envc + 1, NULL); 185 186 for (i = 0; i < inferior_envc; i++) 187 inferior_envp[i] = ctx.EnvironmentAtIndex(i); 188 189 // Our launch type hasn't been set to anything concrete, so we need to 190 // figure our how we are going to launch automatically. 191 192 nub_launch_flavor_t launch_flavor = g_launch_flavor; 193 if (launch_flavor == eLaunchFlavorDefault) 194 { 195 // Our default launch method is posix spawn 196 launch_flavor = eLaunchFlavorPosixSpawn; 197 198 #ifdef WITH_SPRINGBOARD 199 // Check if we have an app bundle, if so launch using SpringBoard. 200 if (strstr(inferior_argv[0], ".app")) 201 { 202 launch_flavor = eLaunchFlavorSpringBoard; 203 } 204 #endif 205 } 206 207 ctx.SetLaunchFlavor(launch_flavor); 208 char resolved_path[PATH_MAX]; 209 210 // If we fail to resolve the path to our executable, then just use what we 211 // were given and hope for the best 212 if ( !DNBResolveExecutablePath (inferior_argv[0], resolved_path, sizeof(resolved_path)) ) 213 ::strncpy(resolved_path, inferior_argv[0], sizeof(resolved_path)); 214 215 char launch_err_str[PATH_MAX]; 216 launch_err_str[0] = '\0'; 217 const char * cwd = (ctx.GetWorkingDirPath() != NULL ? ctx.GetWorkingDirPath() 218 : ctx.GetWorkingDirectory()); 219 nub_process_t pid = DNBProcessLaunch (resolved_path, 220 &inferior_argv[0], 221 &inferior_envp[0], 222 cwd, 223 stdin_path, 224 stdout_path, 225 stderr_path, 226 no_stdio, 227 launch_flavor, 228 g_disable_aslr, 229 launch_err_str, 230 sizeof(launch_err_str)); 231 232 g_pid = pid; 233 234 if (pid == INVALID_NUB_PROCESS && strlen (launch_err_str) > 0) 235 { 236 DNBLogThreaded ("%s DNBProcessLaunch() returned error: '%s'", __FUNCTION__, launch_err_str); 237 ctx.LaunchStatus().SetError(-1, DNBError::Generic); 238 ctx.LaunchStatus().SetErrorString(launch_err_str); 239 } 240 else if (pid == INVALID_NUB_PROCESS) 241 { 242 DNBLogThreaded ("%s DNBProcessLaunch() failed to launch process, unknown failure", __FUNCTION__); 243 ctx.LaunchStatus().SetError(-1, DNBError::Generic); 244 ctx.LaunchStatus().SetErrorString(launch_err_str); 245 } 246 else 247 { 248 ctx.LaunchStatus().Clear(); 249 } 250 251 if (remote->Comm().IsConnected()) 252 { 253 // It we are connected already, the next thing gdb will do is ask 254 // whether the launch succeeded, and if not, whether there is an 255 // error code. So we need to fetch one packet from gdb before we wait 256 // on the stop from the target. 257 258 uint32_t event_mask = RNBContext::event_read_packet_available; 259 nub_event_t set_events = ctx.Events().WaitForSetEvents(event_mask); 260 261 if (set_events & RNBContext::event_read_packet_available) 262 { 263 rnb_err_t err = rnb_err; 264 RNBRemote::PacketEnum type; 265 266 err = remote->HandleReceivedPacket (&type); 267 268 if (err != rnb_success) 269 { 270 DNBLogThreadedIf (LOG_RNB_MINIMAL, "%s Error getting packet.", __FUNCTION__); 271 return eRNBRunLoopModeExit; 272 } 273 if (type != RNBRemote::query_launch_success) 274 { 275 DNBLogThreadedIf (LOG_RNB_MINIMAL, "%s Didn't get the expected qLaunchSuccess packet.", __FUNCTION__); 276 } 277 } 278 } 279 280 while (pid != INVALID_NUB_PROCESS) 281 { 282 // Wait for process to start up and hit entry point 283 DNBLogThreadedIf (LOG_RNB_EVENTS, "%s DNBProcessWaitForEvent (%4.4x, eEventProcessRunningStateChanged | eEventProcessStoppedStateChanged, true, INFINITE)...", __FUNCTION__, pid); 284 nub_event_t set_events = DNBProcessWaitForEvents (pid, eEventProcessRunningStateChanged | eEventProcessStoppedStateChanged, true, NULL); 285 DNBLogThreadedIf (LOG_RNB_EVENTS, "%s DNBProcessWaitForEvent (%4.4x, eEventProcessRunningStateChanged | eEventProcessStoppedStateChanged, true, INFINITE) => 0x%8.8x", __FUNCTION__, pid, set_events); 286 287 if (set_events == 0) 288 { 289 pid = INVALID_NUB_PROCESS; 290 g_pid = pid; 291 } 292 else 293 { 294 if (set_events & (eEventProcessRunningStateChanged | eEventProcessStoppedStateChanged)) 295 { 296 nub_state_t pid_state = DNBProcessGetState (pid); 297 DNBLogThreadedIf (LOG_RNB_EVENTS, "%s process %4.4x state changed (eEventProcessStateChanged): %s", __FUNCTION__, pid, DNBStateAsString(pid_state)); 298 299 switch (pid_state) 300 { 301 default: 302 case eStateInvalid: 303 case eStateUnloaded: 304 case eStateAttaching: 305 case eStateLaunching: 306 case eStateSuspended: 307 break; // Ignore 308 309 case eStateRunning: 310 case eStateStepping: 311 // Still waiting to stop at entry point... 312 break; 313 314 case eStateStopped: 315 case eStateCrashed: 316 ctx.SetProcessID(pid); 317 return eRNBRunLoopModeInferiorExecuting; 318 319 case eStateDetached: 320 case eStateExited: 321 pid = INVALID_NUB_PROCESS; 322 g_pid = pid; 323 return eRNBRunLoopModeExit; 324 } 325 } 326 327 DNBProcessResetEvents(pid, set_events); 328 } 329 } 330 331 return eRNBRunLoopModeExit; 332 } 333 334 335 //---------------------------------------------------------------------- 336 // This run loop mode will wait for the process to launch and hit its 337 // entry point. It will currently ignore all events except for the 338 // process state changed event, where it watches for the process stopped 339 // or crash process state. 340 //---------------------------------------------------------------------- 341 RNBRunLoopMode 342 RNBRunLoopLaunchAttaching (RNBRemote *remote, nub_process_t attach_pid, nub_process_t& pid) 343 { 344 RNBContext& ctx = remote->Context(); 345 346 DNBLogThreadedIf (LOG_RNB_MINIMAL, "%s Attaching to pid %i...", __FUNCTION__, attach_pid); 347 char err_str[1024]; 348 pid = DNBProcessAttach (attach_pid, NULL, err_str, sizeof(err_str)); 349 g_pid = pid; 350 351 if (pid == INVALID_NUB_PROCESS) 352 { 353 ctx.LaunchStatus().SetError(-1, DNBError::Generic); 354 if (err_str[0]) 355 ctx.LaunchStatus().SetErrorString(err_str); 356 return eRNBRunLoopModeExit; 357 } 358 else 359 { 360 ctx.SetProcessID(pid); 361 return eRNBRunLoopModeInferiorExecuting; 362 } 363 } 364 365 //---------------------------------------------------------------------- 366 // Watch for signals: 367 // SIGINT: so we can halt our inferior. (disabled for now) 368 // SIGPIPE: in case our child process dies 369 //---------------------------------------------------------------------- 370 int g_sigint_received = 0; 371 int g_sigpipe_received = 0; 372 void 373 signal_handler(int signo) 374 { 375 DNBLogThreadedIf (LOG_RNB_MINIMAL, "%s (%s)", __FUNCTION__, SysSignal::Name(signo)); 376 377 switch (signo) 378 { 379 case SIGINT: 380 g_sigint_received++; 381 if (g_pid != INVALID_NUB_PROCESS) 382 { 383 // Only send a SIGINT once... 384 if (g_sigint_received == 1) 385 { 386 switch (DNBProcessGetState (g_pid)) 387 { 388 case eStateRunning: 389 case eStateStepping: 390 DNBProcessSignal (g_pid, SIGSTOP); 391 return; 392 default: 393 break; 394 } 395 } 396 } 397 exit (SIGINT); 398 break; 399 400 case SIGPIPE: 401 g_sigpipe_received = 1; 402 break; 403 } 404 } 405 406 // Return the new run loop mode based off of the current process state 407 RNBRunLoopMode 408 HandleProcessStateChange (RNBRemote *remote, bool initialize) 409 { 410 RNBContext& ctx = remote->Context(); 411 nub_process_t pid = ctx.ProcessID(); 412 413 if (pid == INVALID_NUB_PROCESS) 414 { 415 DNBLogThreadedIf (LOG_RNB_MINIMAL, "#### %s error: pid invalid, exiting...", __FUNCTION__); 416 return eRNBRunLoopModeExit; 417 } 418 nub_state_t pid_state = DNBProcessGetState (pid); 419 420 DNBLogThreadedIf (LOG_RNB_MINIMAL, "%s (&remote, initialize=%i) pid_state = %s", __FUNCTION__, (int)initialize, DNBStateAsString (pid_state)); 421 422 switch (pid_state) 423 { 424 case eStateInvalid: 425 case eStateUnloaded: 426 // Something bad happened 427 return eRNBRunLoopModeExit; 428 break; 429 430 case eStateAttaching: 431 case eStateLaunching: 432 return eRNBRunLoopModeInferiorExecuting; 433 434 case eStateSuspended: 435 case eStateCrashed: 436 case eStateStopped: 437 // If we stop due to a signal, so clear the fact that we got a SIGINT 438 // so we can stop ourselves again (but only while our inferior 439 // process is running..) 440 g_sigint_received = 0; 441 if (initialize == false) 442 { 443 // Compare the last stop count to our current notion of a stop count 444 // to make sure we don't notify more than once for a given stop. 445 nub_size_t prev_pid_stop_count = ctx.GetProcessStopCount(); 446 bool pid_stop_count_changed = ctx.SetProcessStopCount(DNBProcessGetStopCount(pid)); 447 if (pid_stop_count_changed) 448 { 449 remote->FlushSTDIO(); 450 451 if (ctx.GetProcessStopCount() == 1) 452 { 453 DNBLogThreadedIf (LOG_RNB_MINIMAL, "%s (&remote, initialize=%i) pid_state = %s pid_stop_count %llu (old %llu)) Notify??? no, first stop...", __FUNCTION__, (int)initialize, DNBStateAsString (pid_state), (uint64_t)ctx.GetProcessStopCount(), (uint64_t)prev_pid_stop_count); 454 } 455 else 456 { 457 458 DNBLogThreadedIf (LOG_RNB_MINIMAL, "%s (&remote, initialize=%i) pid_state = %s pid_stop_count %llu (old %llu)) Notify??? YES!!!", __FUNCTION__, (int)initialize, DNBStateAsString (pid_state), (uint64_t)ctx.GetProcessStopCount(), (uint64_t)prev_pid_stop_count); 459 remote->NotifyThatProcessStopped (); 460 } 461 } 462 else 463 { 464 DNBLogThreadedIf (LOG_RNB_MINIMAL, "%s (&remote, initialize=%i) pid_state = %s pid_stop_count %llu (old %llu)) Notify??? skipping...", __FUNCTION__, (int)initialize, DNBStateAsString (pid_state), (uint64_t)ctx.GetProcessStopCount(), (uint64_t)prev_pid_stop_count); 465 } 466 } 467 return eRNBRunLoopModeInferiorExecuting; 468 469 case eStateStepping: 470 case eStateRunning: 471 return eRNBRunLoopModeInferiorExecuting; 472 473 case eStateExited: 474 remote->HandlePacket_last_signal(NULL); 475 case eStateDetached: 476 return eRNBRunLoopModeExit; 477 478 } 479 480 // Catch all... 481 return eRNBRunLoopModeExit; 482 } 483 // This function handles the case where our inferior program is stopped and 484 // we are waiting for gdb remote protocol packets. When a packet occurs that 485 // makes the inferior run, we need to leave this function with a new state 486 // as the return code. 487 RNBRunLoopMode 488 RNBRunLoopInferiorExecuting (RNBRemote *remote) 489 { 490 DNBLogThreadedIf (LOG_RNB_MINIMAL, "#### %s", __FUNCTION__); 491 RNBContext& ctx = remote->Context(); 492 493 // Init our mode and set 'is_running' based on the current process state 494 RNBRunLoopMode mode = HandleProcessStateChange (remote, true); 495 496 while (ctx.ProcessID() != INVALID_NUB_PROCESS) 497 { 498 499 std::string set_events_str; 500 uint32_t event_mask = ctx.NormalEventBits(); 501 502 if (!ctx.ProcessStateRunning()) 503 { 504 // Clear some bits if we are not running so we don't send any async packets 505 event_mask &= ~RNBContext::event_proc_stdio_available; 506 event_mask &= ~RNBContext::event_proc_profile_data; 507 } 508 509 // We want to make sure we consume all process state changes and have 510 // whomever is notifying us to wait for us to reset the event bit before 511 // continuing. 512 //ctx.Events().SetResetAckMask (RNBContext::event_proc_state_changed); 513 514 DNBLogThreadedIf (LOG_RNB_EVENTS, "%s ctx.Events().WaitForSetEvents(0x%08x) ...",__FUNCTION__, event_mask); 515 nub_event_t set_events = ctx.Events().WaitForSetEvents(event_mask); 516 DNBLogThreadedIf (LOG_RNB_EVENTS, "%s ctx.Events().WaitForSetEvents(0x%08x) => 0x%08x (%s)",__FUNCTION__, event_mask, set_events, ctx.EventsAsString(set_events, set_events_str)); 517 518 if (set_events) 519 { 520 if ((set_events & RNBContext::event_proc_thread_exiting) || 521 (set_events & RNBContext::event_proc_stdio_available)) 522 { 523 remote->FlushSTDIO(); 524 } 525 526 if (set_events & RNBContext::event_proc_profile_data) 527 { 528 remote->SendAsyncProfileData(); 529 } 530 531 if (set_events & RNBContext::event_read_packet_available) 532 { 533 // handleReceivedPacket will take care of resetting the 534 // event_read_packet_available events when there are no more... 535 set_events ^= RNBContext::event_read_packet_available; 536 537 if (ctx.ProcessStateRunning()) 538 { 539 if (remote->HandleAsyncPacket() == rnb_not_connected) 540 { 541 // TODO: connect again? Exit? 542 } 543 } 544 else 545 { 546 if (remote->HandleReceivedPacket() == rnb_not_connected) 547 { 548 // TODO: connect again? Exit? 549 } 550 } 551 } 552 553 if (set_events & RNBContext::event_proc_state_changed) 554 { 555 mode = HandleProcessStateChange (remote, false); 556 ctx.Events().ResetEvents(RNBContext::event_proc_state_changed); 557 set_events ^= RNBContext::event_proc_state_changed; 558 } 559 560 if (set_events & RNBContext::event_proc_thread_exiting) 561 { 562 mode = eRNBRunLoopModeExit; 563 } 564 565 if (set_events & RNBContext::event_read_thread_exiting) 566 { 567 // Out remote packet receiving thread exited, exit for now. 568 if (ctx.HasValidProcessID()) 569 { 570 // TODO: We should add code that will leave the current process 571 // in its current state and listen for another connection... 572 if (ctx.ProcessStateRunning()) 573 { 574 DNBLog ("debugserver's event read thread is exiting, killing the inferior process."); 575 DNBProcessKill (ctx.ProcessID()); 576 } 577 } 578 mode = eRNBRunLoopModeExit; 579 } 580 } 581 582 // Reset all event bits that weren't reset for now... 583 if (set_events != 0) 584 ctx.Events().ResetEvents(set_events); 585 586 if (mode != eRNBRunLoopModeInferiorExecuting) 587 break; 588 } 589 590 return mode; 591 } 592 593 594 RNBRunLoopMode 595 RNBRunLoopPlatform (RNBRemote *remote) 596 { 597 RNBRunLoopMode mode = eRNBRunLoopModePlatformMode; 598 RNBContext& ctx = remote->Context(); 599 600 while (mode == eRNBRunLoopModePlatformMode) 601 { 602 std::string set_events_str; 603 const uint32_t event_mask = RNBContext::event_read_packet_available | 604 RNBContext::event_read_thread_exiting; 605 606 DNBLogThreadedIf (LOG_RNB_EVENTS, "%s ctx.Events().WaitForSetEvents(0x%08x) ...",__FUNCTION__, event_mask); 607 nub_event_t set_events = ctx.Events().WaitForSetEvents(event_mask); 608 DNBLogThreadedIf (LOG_RNB_EVENTS, "%s ctx.Events().WaitForSetEvents(0x%08x) => 0x%08x (%s)",__FUNCTION__, event_mask, set_events, ctx.EventsAsString(set_events, set_events_str)); 609 610 if (set_events) 611 { 612 if (set_events & RNBContext::event_read_packet_available) 613 { 614 if (remote->HandleReceivedPacket() == rnb_not_connected) 615 mode = eRNBRunLoopModeExit; 616 } 617 618 if (set_events & RNBContext::event_read_thread_exiting) 619 { 620 mode = eRNBRunLoopModeExit; 621 } 622 ctx.Events().ResetEvents(set_events); 623 } 624 } 625 return eRNBRunLoopModeExit; 626 } 627 628 //---------------------------------------------------------------------- 629 // Convenience function to set up the remote listening port 630 // Returns 1 for success 0 for failure. 631 //---------------------------------------------------------------------- 632 633 static void 634 PortWasBoundCallback (const void *baton, in_port_t port) 635 { 636 //::printf ("PortWasBoundCallback (baton = %p, port = %u)\n", baton, port); 637 638 const char *unix_socket_name = (const char *)baton; 639 640 if (unix_socket_name && unix_socket_name[0]) 641 { 642 // We were given a unix socket name to use to communicate the port 643 // that we ended up binding to back to our parent process 644 struct sockaddr_un saddr_un; 645 int s = ::socket (AF_UNIX, SOCK_STREAM, 0); 646 if (s < 0) 647 { 648 perror("error: socket (AF_UNIX, SOCK_STREAM, 0)"); 649 exit(1); 650 } 651 652 saddr_un.sun_family = AF_UNIX; 653 ::strncpy(saddr_un.sun_path, unix_socket_name, sizeof(saddr_un.sun_path) - 1); 654 saddr_un.sun_path[sizeof(saddr_un.sun_path) - 1] = '\0'; 655 saddr_un.sun_len = SUN_LEN (&saddr_un); 656 657 if (::connect (s, (struct sockaddr *)&saddr_un, SUN_LEN (&saddr_un)) < 0) 658 { 659 perror("error: connect (socket, &saddr_un, saddr_un_len)"); 660 exit(1); 661 } 662 663 //::printf ("connect () sucess!!\n"); 664 665 666 // We were able to connect to the socket, now write our PID so whomever 667 // launched us will know this process's ID 668 RNBLogSTDOUT ("Listening to port %i...\n", port); 669 670 char pid_str[64]; 671 const int pid_str_len = ::snprintf (pid_str, sizeof(pid_str), "%u", port); 672 const int bytes_sent = ::send (s, pid_str, pid_str_len, 0); 673 674 if (pid_str_len != bytes_sent) 675 { 676 perror("error: send (s, pid_str, pid_str_len, 0)"); 677 exit (1); 678 } 679 680 //::printf ("send () sucess!!\n"); 681 682 // We are done with the socket 683 close (s); 684 } 685 } 686 687 static int 688 StartListening (RNBRemote *remote, int listen_port, const char *unix_socket_name, bool localhost_only) 689 { 690 if (!remote->Comm().IsConnected()) 691 { 692 if (listen_port != 0) 693 RNBLogSTDOUT ("Listening to port %i...\n", listen_port); 694 if (remote->Comm().Listen(listen_port, PortWasBoundCallback, unix_socket_name, localhost_only) != rnb_success) 695 { 696 RNBLogSTDERR ("Failed to get connection from a remote gdb process.\n"); 697 return 0; 698 } 699 else 700 { 701 remote->StartReadRemoteDataThread(); 702 } 703 } 704 return 1; 705 } 706 707 //---------------------------------------------------------------------- 708 // ASL Logging callback that can be registered with DNBLogSetLogCallback 709 //---------------------------------------------------------------------- 710 void 711 ASLLogCallback(void *baton, uint32_t flags, const char *format, va_list args) 712 { 713 if (format == NULL) 714 return; 715 static aslmsg g_aslmsg = NULL; 716 if (g_aslmsg == NULL) 717 { 718 g_aslmsg = ::asl_new (ASL_TYPE_MSG); 719 char asl_key_sender[PATH_MAX]; 720 snprintf(asl_key_sender, sizeof(asl_key_sender), "com.apple.%s-%g", DEBUGSERVER_PROGRAM_NAME, DEBUGSERVER_VERSION_NUM); 721 ::asl_set (g_aslmsg, ASL_KEY_SENDER, asl_key_sender); 722 } 723 724 int asl_level; 725 if (flags & DNBLOG_FLAG_FATAL) asl_level = ASL_LEVEL_CRIT; 726 else if (flags & DNBLOG_FLAG_ERROR) asl_level = ASL_LEVEL_ERR; 727 else if (flags & DNBLOG_FLAG_WARNING) asl_level = ASL_LEVEL_WARNING; 728 else if (flags & DNBLOG_FLAG_VERBOSE) asl_level = ASL_LEVEL_WARNING; //ASL_LEVEL_INFO; 729 else asl_level = ASL_LEVEL_WARNING; //ASL_LEVEL_DEBUG; 730 731 ::asl_vlog (NULL, g_aslmsg, asl_level, format, args); 732 } 733 734 //---------------------------------------------------------------------- 735 // FILE based Logging callback that can be registered with 736 // DNBLogSetLogCallback 737 //---------------------------------------------------------------------- 738 void 739 FileLogCallback(void *baton, uint32_t flags, const char *format, va_list args) 740 { 741 if (baton == NULL || format == NULL) 742 return; 743 744 ::vfprintf ((FILE *)baton, format, args); 745 ::fprintf ((FILE *)baton, "\n"); 746 } 747 748 749 void 750 show_usage_and_exit (int exit_code) 751 { 752 RNBLogSTDERR ("Usage:\n %s host:port [program-name program-arg1 program-arg2 ...]\n", DEBUGSERVER_PROGRAM_NAME); 753 RNBLogSTDERR (" %s /path/file [program-name program-arg1 program-arg2 ...]\n", DEBUGSERVER_PROGRAM_NAME); 754 RNBLogSTDERR (" %s host:port --attach=<pid>\n", DEBUGSERVER_PROGRAM_NAME); 755 RNBLogSTDERR (" %s /path/file --attach=<pid>\n", DEBUGSERVER_PROGRAM_NAME); 756 RNBLogSTDERR (" %s host:port --attach=<process_name>\n", DEBUGSERVER_PROGRAM_NAME); 757 RNBLogSTDERR (" %s /path/file --attach=<process_name>\n", DEBUGSERVER_PROGRAM_NAME); 758 exit (exit_code); 759 } 760 761 762 //---------------------------------------------------------------------- 763 // option descriptors for getopt_long() 764 //---------------------------------------------------------------------- 765 static struct option g_long_options[] = 766 { 767 { "attach", required_argument, NULL, 'a' }, 768 { "arch", required_argument, NULL, 'A' }, 769 { "debug", no_argument, NULL, 'g' }, 770 { "verbose", no_argument, NULL, 'v' }, 771 { "lockdown", no_argument, &g_lockdown_opt, 1 }, // short option "-k" 772 { "applist", no_argument, &g_applist_opt, 1 }, // short option "-t" 773 { "log-file", required_argument, NULL, 'l' }, 774 { "log-flags", required_argument, NULL, 'f' }, 775 { "launch", required_argument, NULL, 'x' }, // Valid values are "auto", "posix-spawn", "fork-exec", "springboard" (arm only) 776 { "waitfor", required_argument, NULL, 'w' }, // Wait for a process whose name starts with ARG 777 { "waitfor-interval", required_argument, NULL, 'i' }, // Time in usecs to wait between sampling the pid list when waiting for a process by name 778 { "waitfor-duration", required_argument, NULL, 'd' }, // The time in seconds to wait for a process to show up by name 779 { "native-regs", no_argument, NULL, 'r' }, // Specify to use the native registers instead of the gdb defaults for the architecture. 780 { "stdio-path", required_argument, NULL, 's' }, // Set the STDIO path to be used when launching applications (STDIN, STDOUT and STDERR) (only if debugserver launches the process) 781 { "stdin-path", required_argument, NULL, 'I' }, // Set the STDIN path to be used when launching applications (only if debugserver launches the process) 782 { "stdout-path", required_argument, NULL, 'O' }, // Set the STDOUT path to be used when launching applications (only if debugserver launches the process) 783 { "stderr-path", required_argument, NULL, 'E' }, // Set the STDERR path to be used when launching applications (only if debugserver launches the process) 784 { "no-stdio", no_argument, NULL, 'n' }, // Do not set up any stdio (perhaps the program is a GUI program) (only if debugserver launches the process) 785 { "setsid", no_argument, NULL, 'S' }, // call setsid() to make debugserver run in its own session 786 { "disable-aslr", no_argument, NULL, 'D' }, // Use _POSIX_SPAWN_DISABLE_ASLR to avoid shared library randomization 787 { "working-dir", required_argument, NULL, 'W' }, // The working directory that the inferior process should have (only if debugserver launches the process) 788 { "platform", required_argument, NULL, 'p' }, // Put this executable into a remote platform mode 789 { "unix-socket", required_argument, NULL, 'u' }, // If we need to handshake with our parent process, an option will be passed down that specifies a unix socket name to use 790 { "open-connection", no_argument, NULL, 'H' }, // If debugserver is listening to a TCP port, allow connections from any host (as opposed to just "localhost" connections) 791 { NULL, 0, NULL, 0 } 792 }; 793 794 795 //---------------------------------------------------------------------- 796 // main 797 //---------------------------------------------------------------------- 798 int 799 main (int argc, char *argv[]) 800 { 801 const char *argv_sub_zero = argv[0]; // save a copy of argv[0] for error reporting post-launch 802 803 g_isatty = ::isatty (STDIN_FILENO); 804 805 // ::printf ("uid=%u euid=%u gid=%u egid=%u\n", 806 // getuid(), 807 // geteuid(), 808 // getgid(), 809 // getegid()); 810 811 812 // signal (SIGINT, signal_handler); 813 signal (SIGPIPE, signal_handler); 814 signal (SIGHUP, signal_handler); 815 816 g_remoteSP.reset (new RNBRemote ()); 817 818 819 RNBRemote *remote = g_remoteSP.get(); 820 if (remote == NULL) 821 { 822 RNBLogSTDERR ("error: failed to create a remote connection class\n"); 823 return -1; 824 } 825 826 RNBContext& ctx = remote->Context(); 827 828 int i; 829 int attach_pid = INVALID_NUB_PROCESS; 830 831 FILE* log_file = NULL; 832 uint32_t log_flags = 0; 833 // Parse our options 834 int ch; 835 int long_option_index = 0; 836 int debug = 0; 837 std::string compile_options; 838 std::string waitfor_pid_name; // Wait for a process that starts with this name 839 std::string attach_pid_name; 840 std::string arch_name; 841 std::string working_dir; // The new working directory to use for the inferior 842 std::string unix_socket_name; // If we need to handshake with our parent process, an option will be passed down that specifies a unix socket name to use 843 useconds_t waitfor_interval = 1000; // Time in usecs between process lists polls when waiting for a process by name, default 1 msec. 844 useconds_t waitfor_duration = 0; // Time in seconds to wait for a process by name, 0 means wait forever. 845 bool no_stdio = false; 846 bool localhost_only = true; 847 848 #if !defined (DNBLOG_ENABLED) 849 compile_options += "(no-logging) "; 850 #endif 851 852 RNBRunLoopMode start_mode = eRNBRunLoopModeExit; 853 854 char short_options[512]; 855 uint32_t short_options_idx = 0; 856 857 // Handle the two case that don't have short options in g_long_options 858 short_options[short_options_idx++] = 'k'; 859 short_options[short_options_idx++] = 't'; 860 861 for (i=0; g_long_options[i].name != NULL; ++i) 862 { 863 if (isalpha(g_long_options[i].val)) 864 { 865 short_options[short_options_idx++] = g_long_options[i].val; 866 switch (g_long_options[i].has_arg) 867 { 868 default: 869 case no_argument: 870 break; 871 872 case optional_argument: 873 short_options[short_options_idx++] = ':'; 874 // Fall through to required_argument case below... 875 case required_argument: 876 short_options[short_options_idx++] = ':'; 877 break; 878 } 879 } 880 } 881 // NULL terminate the short option string. 882 short_options[short_options_idx++] = '\0'; 883 while ((ch = getopt_long(argc, argv, short_options, g_long_options, &long_option_index)) != -1) 884 { 885 DNBLogDebug("option: ch == %c (0x%2.2x) --%s%c%s\n", 886 ch, (uint8_t)ch, 887 g_long_options[long_option_index].name, 888 g_long_options[long_option_index].has_arg ? '=' : ' ', 889 optarg ? optarg : ""); 890 switch (ch) 891 { 892 case 0: // Any optional that auto set themselves will return 0 893 break; 894 895 case 'A': 896 if (optarg && optarg[0]) 897 arch_name.assign(optarg); 898 break; 899 900 case 'a': 901 if (optarg && optarg[0]) 902 { 903 if (isdigit(optarg[0])) 904 { 905 char *end = NULL; 906 attach_pid = strtoul(optarg, &end, 0); 907 if (end == NULL || *end != '\0') 908 { 909 RNBLogSTDERR ("error: invalid pid option '%s'\n", optarg); 910 exit (4); 911 } 912 } 913 else 914 { 915 attach_pid_name = optarg; 916 } 917 start_mode = eRNBRunLoopModeInferiorAttaching; 918 } 919 break; 920 921 // --waitfor=NAME 922 case 'w': 923 if (optarg && optarg[0]) 924 { 925 waitfor_pid_name = optarg; 926 start_mode = eRNBRunLoopModeInferiorAttaching; 927 } 928 break; 929 930 // --waitfor-interval=USEC 931 case 'i': 932 if (optarg && optarg[0]) 933 { 934 char *end = NULL; 935 waitfor_interval = strtoul(optarg, &end, 0); 936 if (end == NULL || *end != '\0') 937 { 938 RNBLogSTDERR ("error: invalid waitfor-interval option value '%s'.\n", optarg); 939 exit (6); 940 } 941 } 942 break; 943 944 // --waitfor-duration=SEC 945 case 'd': 946 if (optarg && optarg[0]) 947 { 948 char *end = NULL; 949 waitfor_duration = strtoul(optarg, &end, 0); 950 if (end == NULL || *end != '\0') 951 { 952 RNBLogSTDERR ("error: invalid waitfor-duration option value '%s'.\n", optarg); 953 exit (7); 954 } 955 } 956 break; 957 958 case 'W': 959 if (optarg && optarg[0]) 960 working_dir.assign(optarg); 961 break; 962 963 case 'x': 964 if (optarg && optarg[0]) 965 { 966 if (strcasecmp(optarg, "auto") == 0) 967 g_launch_flavor = eLaunchFlavorDefault; 968 else if (strcasestr(optarg, "posix") == optarg) 969 g_launch_flavor = eLaunchFlavorPosixSpawn; 970 else if (strcasestr(optarg, "fork") == optarg) 971 g_launch_flavor = eLaunchFlavorForkExec; 972 #ifdef WITH_SPRINGBOARD 973 else if (strcasestr(optarg, "spring") == optarg) 974 g_launch_flavor = eLaunchFlavorSpringBoard; 975 #endif 976 else 977 { 978 RNBLogSTDERR ("error: invalid TYPE for the --launch=TYPE (-x TYPE) option: '%s'\n", optarg); 979 RNBLogSTDERR ("Valid values TYPE are:\n"); 980 RNBLogSTDERR (" auto Auto-detect the best launch method to use.\n"); 981 RNBLogSTDERR (" posix Launch the executable using posix_spawn.\n"); 982 RNBLogSTDERR (" fork Launch the executable using fork and exec.\n"); 983 #ifdef WITH_SPRINGBOARD 984 RNBLogSTDERR (" spring Launch the executable through Springboard.\n"); 985 #endif 986 exit (5); 987 } 988 } 989 break; 990 991 case 'l': // Set Log File 992 if (optarg && optarg[0]) 993 { 994 if (strcasecmp(optarg, "stdout") == 0) 995 log_file = stdout; 996 else if (strcasecmp(optarg, "stderr") == 0) 997 log_file = stderr; 998 else 999 { 1000 log_file = fopen(optarg, "w"); 1001 if (log_file != NULL) 1002 setlinebuf(log_file); 1003 } 1004 1005 if (log_file == NULL) 1006 { 1007 const char *errno_str = strerror(errno); 1008 RNBLogSTDERR ("Failed to open log file '%s' for writing: errno = %i (%s)", optarg, errno, errno_str ? errno_str : "unknown error"); 1009 } 1010 } 1011 break; 1012 1013 case 'f': // Log Flags 1014 if (optarg && optarg[0]) 1015 log_flags = strtoul(optarg, NULL, 0); 1016 break; 1017 1018 case 'g': 1019 debug = 1; 1020 DNBLogSetDebug(debug); 1021 break; 1022 1023 case 't': 1024 g_applist_opt = 1; 1025 break; 1026 1027 case 'k': 1028 g_lockdown_opt = 1; 1029 break; 1030 1031 case 'r': 1032 remote->SetUseNativeRegisters (true); 1033 break; 1034 1035 case 'v': 1036 DNBLogSetVerbose(1); 1037 break; 1038 1039 case 's': 1040 ctx.GetSTDIN().assign(optarg); 1041 ctx.GetSTDOUT().assign(optarg); 1042 ctx.GetSTDERR().assign(optarg); 1043 break; 1044 1045 case 'I': 1046 ctx.GetSTDIN().assign(optarg); 1047 break; 1048 1049 case 'O': 1050 ctx.GetSTDOUT().assign(optarg); 1051 break; 1052 1053 case 'E': 1054 ctx.GetSTDERR().assign(optarg); 1055 break; 1056 1057 case 'n': 1058 no_stdio = true; 1059 break; 1060 1061 case 'S': 1062 // Put debugserver into a new session. Terminals group processes 1063 // into sessions and when a special terminal key sequences 1064 // (like control+c) are typed they can cause signals to go out to 1065 // all processes in a session. Using this --setsid (-S) option 1066 // will cause debugserver to run in its own sessions and be free 1067 // from such issues. 1068 // 1069 // This is useful when debugserver is spawned from a command 1070 // line application that uses debugserver to do the debugging, 1071 // yet that application doesn't want debugserver receiving the 1072 // signals sent to the session (i.e. dying when anyone hits ^C). 1073 setsid(); 1074 break; 1075 case 'D': 1076 g_disable_aslr = 1; 1077 break; 1078 1079 case 'p': 1080 start_mode = eRNBRunLoopModePlatformMode; 1081 break; 1082 1083 case 'u': 1084 unix_socket_name.assign (optarg); 1085 break; 1086 1087 case 'H': 1088 localhost_only = false; 1089 break; 1090 } 1091 } 1092 1093 if (arch_name.empty()) 1094 { 1095 #if defined (__arm__) 1096 arch_name.assign ("arm"); 1097 #endif 1098 } 1099 else 1100 { 1101 DNBSetArchitecture (arch_name.c_str()); 1102 } 1103 1104 // if (arch_name.empty()) 1105 // { 1106 // fprintf(stderr, "error: no architecture was specified\n"); 1107 // exit (8); 1108 // } 1109 // Skip any options we consumed with getopt_long 1110 argc -= optind; 1111 argv += optind; 1112 1113 1114 if (!working_dir.empty()) 1115 { 1116 if (remote->Context().SetWorkingDirectory (working_dir.c_str()) == false) 1117 { 1118 RNBLogSTDERR ("error: working directory doesn't exist '%s'.\n", working_dir.c_str()); 1119 exit (8); 1120 } 1121 } 1122 1123 remote->Initialize(); 1124 1125 // It is ok for us to set NULL as the logfile (this will disable any logging) 1126 1127 if (log_file != NULL) 1128 { 1129 DNBLogSetLogCallback(FileLogCallback, log_file); 1130 // If our log file was set, yet we have no log flags, log everything! 1131 if (log_flags == 0) 1132 log_flags = LOG_ALL | LOG_RNB_ALL; 1133 1134 DNBLogSetLogMask (log_flags); 1135 } 1136 else 1137 { 1138 // Enable DNB logging 1139 DNBLogSetLogCallback(ASLLogCallback, NULL); 1140 DNBLogSetLogMask (log_flags); 1141 1142 } 1143 1144 if (DNBLogEnabled()) 1145 { 1146 for (i=0; i<argc; i++) 1147 DNBLogDebug("argv[%i] = %s", i, argv[i]); 1148 } 1149 1150 // as long as we're dropping remotenub in as a replacement for gdbserver, 1151 // explicitly note that this is not gdbserver. 1152 1153 RNBLogSTDOUT ("%s-%g %sfor %s.\n", 1154 DEBUGSERVER_PROGRAM_NAME, 1155 DEBUGSERVER_VERSION_NUM, 1156 compile_options.c_str(), 1157 RNB_ARCH); 1158 1159 int listen_port = INT32_MAX; 1160 char str[PATH_MAX]; 1161 str[0] = '\0'; 1162 1163 if (g_lockdown_opt == 0 && g_applist_opt == 0) 1164 { 1165 // Make sure we at least have port 1166 if (argc < 1) 1167 { 1168 show_usage_and_exit (1); 1169 } 1170 // accept 'localhost:' prefix on port number 1171 1172 int items_scanned = ::sscanf (argv[0], "%[^:]:%i", str, &listen_port); 1173 if (items_scanned == 2) 1174 { 1175 DNBLogDebug("host = '%s' port = %i", str, listen_port); 1176 } 1177 else if (argv[0][0] == '/') 1178 { 1179 listen_port = INT32_MAX; 1180 strncpy(str, argv[0], sizeof(str)); 1181 } 1182 else 1183 { 1184 show_usage_and_exit (2); 1185 } 1186 1187 // We just used the 'host:port' or the '/path/file' arg... 1188 argc--; 1189 argv++; 1190 1191 } 1192 1193 // If we know we're waiting to attach, we don't need any of this other info. 1194 if (start_mode != eRNBRunLoopModeInferiorAttaching && 1195 start_mode != eRNBRunLoopModePlatformMode) 1196 { 1197 if (argc == 0 || g_lockdown_opt) 1198 { 1199 if (g_lockdown_opt != 0) 1200 { 1201 // Work around for SIGPIPE crashes due to posix_spawn issue. 1202 // We have to close STDOUT and STDERR, else the first time we 1203 // try and do any, we get SIGPIPE and die as posix_spawn is 1204 // doing bad things with our file descriptors at the moment. 1205 int null = open("/dev/null", O_RDWR); 1206 dup2(null, STDOUT_FILENO); 1207 dup2(null, STDERR_FILENO); 1208 } 1209 else if (g_applist_opt != 0) 1210 { 1211 // List all applications we are able to see 1212 std::string applist_plist; 1213 int err = ListApplications(applist_plist, false, false); 1214 if (err == 0) 1215 { 1216 fputs (applist_plist.c_str(), stdout); 1217 } 1218 else 1219 { 1220 RNBLogSTDERR ("error: ListApplications returned error %i\n", err); 1221 } 1222 // Exit with appropriate error if we were asked to list the applications 1223 // with no other args were given (and we weren't trying to do this over 1224 // lockdown) 1225 return err; 1226 } 1227 1228 DNBLogDebug("Get args from remote protocol..."); 1229 start_mode = eRNBRunLoopModeGetStartModeFromRemoteProtocol; 1230 } 1231 else 1232 { 1233 start_mode = eRNBRunLoopModeInferiorLaunching; 1234 // Fill in the argv array in the context from the rest of our args. 1235 // Skip the name of this executable and the port number 1236 for (int i = 0; i < argc; i++) 1237 { 1238 DNBLogDebug("inferior_argv[%i] = '%s'", i, argv[i]); 1239 ctx.PushArgument (argv[i]); 1240 } 1241 } 1242 } 1243 1244 if (start_mode == eRNBRunLoopModeExit) 1245 return -1; 1246 1247 RNBRunLoopMode mode = start_mode; 1248 char err_str[1024] = {'\0'}; 1249 1250 while (mode != eRNBRunLoopModeExit) 1251 { 1252 switch (mode) 1253 { 1254 case eRNBRunLoopModeGetStartModeFromRemoteProtocol: 1255 #ifdef WITH_LOCKDOWN 1256 if (g_lockdown_opt) 1257 { 1258 if (!remote->Comm().IsConnected()) 1259 { 1260 if (remote->Comm().ConnectToService () != rnb_success) 1261 { 1262 RNBLogSTDERR ("Failed to get connection from a remote gdb process.\n"); 1263 mode = eRNBRunLoopModeExit; 1264 } 1265 else if (g_applist_opt != 0) 1266 { 1267 // List all applications we are able to see 1268 std::string applist_plist; 1269 if (ListApplications(applist_plist, false, false) == 0) 1270 { 1271 DNBLogDebug("Task list: %s", applist_plist.c_str()); 1272 1273 remote->Comm().Write(applist_plist.c_str(), applist_plist.size()); 1274 // Issue a read that will never yield any data until the other side 1275 // closes the socket so this process doesn't just exit and cause the 1276 // socket to close prematurely on the other end and cause data loss. 1277 std::string buf; 1278 remote->Comm().Read(buf); 1279 } 1280 remote->Comm().Disconnect(false); 1281 mode = eRNBRunLoopModeExit; 1282 break; 1283 } 1284 else 1285 { 1286 // Start watching for remote packets 1287 remote->StartReadRemoteDataThread(); 1288 } 1289 } 1290 } 1291 else 1292 #endif 1293 if (listen_port != INT32_MAX) 1294 { 1295 if (!StartListening (remote, listen_port, unix_socket_name.c_str(), localhost_only)) 1296 mode = eRNBRunLoopModeExit; 1297 } 1298 else if (str[0] == '/') 1299 { 1300 if (remote->Comm().OpenFile (str)) 1301 mode = eRNBRunLoopModeExit; 1302 } 1303 1304 if (mode != eRNBRunLoopModeExit) 1305 { 1306 RNBLogSTDOUT ("Got a connection, waiting for process information for launching or attaching.\n"); 1307 1308 mode = RNBRunLoopGetStartModeFromRemote (remote); 1309 } 1310 break; 1311 1312 case eRNBRunLoopModeInferiorAttaching: 1313 if (!waitfor_pid_name.empty()) 1314 { 1315 // Set our end wait time if we are using a waitfor-duration 1316 // option that may have been specified 1317 struct timespec attach_timeout_abstime, *timeout_ptr = NULL; 1318 if (waitfor_duration != 0) 1319 { 1320 DNBTimer::OffsetTimeOfDay(&attach_timeout_abstime, waitfor_duration, 0); 1321 timeout_ptr = &attach_timeout_abstime; 1322 } 1323 nub_launch_flavor_t launch_flavor = g_launch_flavor; 1324 if (launch_flavor == eLaunchFlavorDefault) 1325 { 1326 // Our default launch method is posix spawn 1327 launch_flavor = eLaunchFlavorPosixSpawn; 1328 1329 #ifdef WITH_SPRINGBOARD 1330 // Check if we have an app bundle, if so launch using SpringBoard. 1331 if (waitfor_pid_name.find (".app") != std::string::npos) 1332 { 1333 launch_flavor = eLaunchFlavorSpringBoard; 1334 } 1335 #endif 1336 } 1337 1338 ctx.SetLaunchFlavor(launch_flavor); 1339 bool ignore_existing = false; 1340 RNBLogSTDOUT ("Waiting to attach to process %s...\n", waitfor_pid_name.c_str()); 1341 nub_process_t pid = DNBProcessAttachWait (waitfor_pid_name.c_str(), launch_flavor, ignore_existing, timeout_ptr, waitfor_interval, err_str, sizeof(err_str)); 1342 g_pid = pid; 1343 1344 if (pid == INVALID_NUB_PROCESS) 1345 { 1346 ctx.LaunchStatus().SetError(-1, DNBError::Generic); 1347 if (err_str[0]) 1348 ctx.LaunchStatus().SetErrorString(err_str); 1349 RNBLogSTDERR ("error: failed to attach to process named: \"%s\" %s\n", waitfor_pid_name.c_str(), err_str); 1350 mode = eRNBRunLoopModeExit; 1351 } 1352 else 1353 { 1354 ctx.SetProcessID(pid); 1355 mode = eRNBRunLoopModeInferiorExecuting; 1356 } 1357 } 1358 else if (attach_pid != INVALID_NUB_PROCESS) 1359 { 1360 1361 RNBLogSTDOUT ("Attaching to process %i...\n", attach_pid); 1362 nub_process_t attached_pid; 1363 mode = RNBRunLoopLaunchAttaching (remote, attach_pid, attached_pid); 1364 if (mode != eRNBRunLoopModeInferiorExecuting) 1365 { 1366 const char *error_str = remote->Context().LaunchStatus().AsString(); 1367 RNBLogSTDERR ("error: failed to attach process %i: %s\n", attach_pid, error_str ? error_str : "unknown error."); 1368 mode = eRNBRunLoopModeExit; 1369 } 1370 } 1371 else if (!attach_pid_name.empty ()) 1372 { 1373 struct timespec attach_timeout_abstime, *timeout_ptr = NULL; 1374 if (waitfor_duration != 0) 1375 { 1376 DNBTimer::OffsetTimeOfDay(&attach_timeout_abstime, waitfor_duration, 0); 1377 timeout_ptr = &attach_timeout_abstime; 1378 } 1379 1380 RNBLogSTDOUT ("Attaching to process %s...\n", attach_pid_name.c_str()); 1381 nub_process_t pid = DNBProcessAttachByName (attach_pid_name.c_str(), timeout_ptr, err_str, sizeof(err_str)); 1382 g_pid = pid; 1383 if (pid == INVALID_NUB_PROCESS) 1384 { 1385 ctx.LaunchStatus().SetError(-1, DNBError::Generic); 1386 if (err_str[0]) 1387 ctx.LaunchStatus().SetErrorString(err_str); 1388 RNBLogSTDERR ("error: failed to attach to process named: \"%s\" %s\n", waitfor_pid_name.c_str(), err_str); 1389 mode = eRNBRunLoopModeExit; 1390 } 1391 else 1392 { 1393 ctx.SetProcessID(pid); 1394 mode = eRNBRunLoopModeInferiorExecuting; 1395 } 1396 1397 } 1398 else 1399 { 1400 RNBLogSTDERR ("error: asked to attach with empty name and invalid PID.\n"); 1401 mode = eRNBRunLoopModeExit; 1402 } 1403 1404 if (mode != eRNBRunLoopModeExit) 1405 { 1406 if (listen_port != INT32_MAX) 1407 { 1408 if (!StartListening (remote, listen_port, unix_socket_name.c_str(), localhost_only)) 1409 mode = eRNBRunLoopModeExit; 1410 } 1411 else if (str[0] == '/') 1412 { 1413 if (remote->Comm().OpenFile (str)) 1414 mode = eRNBRunLoopModeExit; 1415 } 1416 if (mode != eRNBRunLoopModeExit) 1417 RNBLogSTDOUT ("Waiting for debugger instructions for process %d.\n", attach_pid); 1418 } 1419 break; 1420 1421 case eRNBRunLoopModeInferiorLaunching: 1422 { 1423 mode = RNBRunLoopLaunchInferior (remote, 1424 ctx.GetSTDINPath(), 1425 ctx.GetSTDOUTPath(), 1426 ctx.GetSTDERRPath(), 1427 no_stdio); 1428 1429 if (mode == eRNBRunLoopModeInferiorExecuting) 1430 { 1431 if (listen_port != INT32_MAX) 1432 { 1433 if (!StartListening (remote, listen_port, unix_socket_name.c_str(), localhost_only)) 1434 mode = eRNBRunLoopModeExit; 1435 } 1436 else if (str[0] == '/') 1437 { 1438 if (remote->Comm().OpenFile (str)) 1439 mode = eRNBRunLoopModeExit; 1440 } 1441 1442 if (mode != eRNBRunLoopModeExit) 1443 RNBLogSTDOUT ("Got a connection, launched process %s.\n", argv_sub_zero); 1444 } 1445 else 1446 { 1447 const char *error_str = remote->Context().LaunchStatus().AsString(); 1448 RNBLogSTDERR ("error: failed to launch process %s: %s\n", argv_sub_zero, error_str ? error_str : "unknown error."); 1449 } 1450 } 1451 break; 1452 1453 case eRNBRunLoopModeInferiorExecuting: 1454 mode = RNBRunLoopInferiorExecuting(remote); 1455 break; 1456 1457 case eRNBRunLoopModePlatformMode: 1458 if (listen_port != INT32_MAX) 1459 { 1460 if (!StartListening (remote, listen_port, unix_socket_name.c_str(), localhost_only)) 1461 mode = eRNBRunLoopModeExit; 1462 } 1463 else if (str[0] == '/') 1464 { 1465 if (remote->Comm().OpenFile (str)) 1466 mode = eRNBRunLoopModeExit; 1467 } 1468 1469 if (mode != eRNBRunLoopModeExit) 1470 mode = RNBRunLoopPlatform (remote); 1471 break; 1472 1473 default: 1474 mode = eRNBRunLoopModeExit; 1475 case eRNBRunLoopModeExit: 1476 break; 1477 } 1478 } 1479 1480 remote->StopReadRemoteDataThread (); 1481 remote->Context().SetProcessID(INVALID_NUB_PROCESS); 1482 RNBLogSTDOUT ("Exiting.\n"); 1483 1484 return 0; 1485 } 1486