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 #include <crt_externs.h> // for _NSGetEnviron() 27 28 #if defined (__APPLE__) 29 #include <sched.h> 30 extern "C" int proc_set_wakemon_params(pid_t, int, int); // <libproc_internal.h> SPI 31 #endif 32 33 #include "CFString.h" 34 #include "DNB.h" 35 #include "DNBLog.h" 36 #include "DNBTimer.h" 37 #include "PseudoTerminal.h" 38 #include "RNBContext.h" 39 #include "RNBServices.h" 40 #include "RNBSocket.h" 41 #include "RNBRemote.h" 42 #include "SysSignal.h" 43 44 // Global PID in case we get a signal and need to stop the process... 45 nub_process_t g_pid = INVALID_NUB_PROCESS; 46 47 //---------------------------------------------------------------------- 48 // Run loop modes which determine which run loop function will be called 49 //---------------------------------------------------------------------- 50 typedef enum 51 { 52 eRNBRunLoopModeInvalid = 0, 53 eRNBRunLoopModeGetStartModeFromRemoteProtocol, 54 eRNBRunLoopModeInferiorAttaching, 55 eRNBRunLoopModeInferiorLaunching, 56 eRNBRunLoopModeInferiorExecuting, 57 eRNBRunLoopModePlatformMode, 58 eRNBRunLoopModeExit 59 } RNBRunLoopMode; 60 61 62 //---------------------------------------------------------------------- 63 // Global Variables 64 //---------------------------------------------------------------------- 65 RNBRemoteSP g_remoteSP; 66 static int g_lockdown_opt = 0; 67 static int g_applist_opt = 0; 68 static nub_launch_flavor_t g_launch_flavor = eLaunchFlavorDefault; 69 int g_disable_aslr = 0; 70 71 int g_isatty = 0; 72 bool g_detach_on_error = true; 73 74 #define RNBLogSTDOUT(fmt, ...) do { if (g_isatty) { fprintf(stdout, fmt, ## __VA_ARGS__); } else { _DNBLog(0, fmt, ## __VA_ARGS__); } } while (0) 75 #define RNBLogSTDERR(fmt, ...) do { if (g_isatty) { fprintf(stderr, fmt, ## __VA_ARGS__); } else { _DNBLog(0, fmt, ## __VA_ARGS__); } } while (0) 76 77 //---------------------------------------------------------------------- 78 // Get our program path and arguments from the remote connection. 79 // We will need to start up the remote connection without a PID, get the 80 // arguments, wait for the new process to finish launching and hit its 81 // entry point, and then return the run loop mode that should come next. 82 //---------------------------------------------------------------------- 83 RNBRunLoopMode 84 RNBRunLoopGetStartModeFromRemote (RNBRemote* remote) 85 { 86 std::string packet; 87 88 if (remote) 89 { 90 RNBContext& ctx = remote->Context(); 91 uint32_t event_mask = RNBContext::event_read_packet_available | 92 RNBContext::event_read_thread_exiting; 93 94 // Spin waiting to get the A packet. 95 while (1) 96 { 97 DNBLogThreadedIf (LOG_RNB_MAX, "%s ctx.Events().WaitForSetEvents( 0x%08x ) ...",__FUNCTION__, event_mask); 98 nub_event_t set_events = ctx.Events().WaitForSetEvents(event_mask); 99 DNBLogThreadedIf (LOG_RNB_MAX, "%s ctx.Events().WaitForSetEvents( 0x%08x ) => 0x%08x", __FUNCTION__, event_mask, set_events); 100 101 if (set_events & RNBContext::event_read_thread_exiting) 102 { 103 RNBLogSTDERR ("error: packet read thread exited.\n"); 104 return eRNBRunLoopModeExit; 105 } 106 107 if (set_events & RNBContext::event_read_packet_available) 108 { 109 rnb_err_t err = rnb_err; 110 RNBRemote::PacketEnum type; 111 112 err = remote->HandleReceivedPacket (&type); 113 114 // check if we tried to attach to a process 115 if (type == RNBRemote::vattach || type == RNBRemote::vattachwait || type == RNBRemote::vattachorwait) 116 { 117 if (err == rnb_success) 118 { 119 RNBLogSTDOUT ("Attach succeeded, ready to debug.\n"); 120 return eRNBRunLoopModeInferiorExecuting; 121 } 122 else 123 { 124 RNBLogSTDERR ("error: attach failed.\n"); 125 return eRNBRunLoopModeExit; 126 } 127 } 128 129 if (err == rnb_success) 130 { 131 // If we got our arguments we are ready to launch using the arguments 132 // and any environment variables we received. 133 if (type == RNBRemote::set_argv) 134 { 135 return eRNBRunLoopModeInferiorLaunching; 136 } 137 } 138 else if (err == rnb_not_connected) 139 { 140 RNBLogSTDERR ("error: connection lost.\n"); 141 return eRNBRunLoopModeExit; 142 } 143 else 144 { 145 // a catch all for any other gdb remote packets that failed 146 DNBLogThreadedIf (LOG_RNB_MINIMAL, "%s Error getting packet.",__FUNCTION__); 147 continue; 148 } 149 150 DNBLogThreadedIf (LOG_RNB_MINIMAL, "#### %s", __FUNCTION__); 151 } 152 else 153 { 154 DNBLogThreadedIf (LOG_RNB_MINIMAL, "%s Connection closed before getting \"A\" packet.", __FUNCTION__); 155 return eRNBRunLoopModeExit; 156 } 157 } 158 } 159 return eRNBRunLoopModeExit; 160 } 161 162 163 //---------------------------------------------------------------------- 164 // This run loop mode will wait for the process to launch and hit its 165 // entry point. It will currently ignore all events except for the 166 // process state changed event, where it watches for the process stopped 167 // or crash process state. 168 //---------------------------------------------------------------------- 169 RNBRunLoopMode 170 RNBRunLoopLaunchInferior (RNBRemote *remote, const char *stdin_path, const char *stdout_path, const char *stderr_path, bool no_stdio) 171 { 172 RNBContext& ctx = remote->Context(); 173 174 // The Process stuff takes a c array, the RNBContext has a vector... 175 // So make up a c array. 176 177 DNBLogThreadedIf (LOG_RNB_MINIMAL, "%s Launching '%s'...", __FUNCTION__, ctx.ArgumentAtIndex(0)); 178 179 size_t inferior_argc = ctx.ArgumentCount(); 180 // Initialize inferior_argv with inferior_argc + 1 NULLs 181 std::vector<const char *> inferior_argv(inferior_argc + 1, NULL); 182 183 size_t i; 184 for (i = 0; i < inferior_argc; i++) 185 inferior_argv[i] = ctx.ArgumentAtIndex(i); 186 187 // Pass the environment array the same way: 188 189 size_t inferior_envc = ctx.EnvironmentCount(); 190 // Initialize inferior_argv with inferior_argc + 1 NULLs 191 std::vector<const char *> inferior_envp(inferior_envc + 1, NULL); 192 193 for (i = 0; i < inferior_envc; i++) 194 inferior_envp[i] = ctx.EnvironmentAtIndex(i); 195 196 // Our launch type hasn't been set to anything concrete, so we need to 197 // figure our how we are going to launch automatically. 198 199 nub_launch_flavor_t launch_flavor = g_launch_flavor; 200 if (launch_flavor == eLaunchFlavorDefault) 201 { 202 // Our default launch method is posix spawn 203 launch_flavor = eLaunchFlavorPosixSpawn; 204 205 #if defined WITH_BKS 206 // Check if we have an app bundle, if so launch using BackBoard Services. 207 if (strstr(inferior_argv[0], ".app")) 208 { 209 launch_flavor = eLaunchFlavorBKS; 210 } 211 #elif defined WITH_SPRINGBOARD 212 // Check if we have an app bundle, if so launch using SpringBoard. 213 if (strstr(inferior_argv[0], ".app")) 214 { 215 launch_flavor = eLaunchFlavorSpringBoard; 216 } 217 #endif 218 } 219 220 ctx.SetLaunchFlavor(launch_flavor); 221 char resolved_path[PATH_MAX]; 222 223 // If we fail to resolve the path to our executable, then just use what we 224 // were given and hope for the best 225 if ( !DNBResolveExecutablePath (inferior_argv[0], resolved_path, sizeof(resolved_path)) ) 226 ::strncpy(resolved_path, inferior_argv[0], sizeof(resolved_path)); 227 228 char launch_err_str[PATH_MAX]; 229 launch_err_str[0] = '\0'; 230 const char * cwd = (ctx.GetWorkingDirPath() != NULL ? ctx.GetWorkingDirPath() 231 : ctx.GetWorkingDirectory()); 232 const char *process_event = ctx.GetProcessEvent(); 233 nub_process_t pid = DNBProcessLaunch (resolved_path, 234 &inferior_argv[0], 235 &inferior_envp[0], 236 cwd, 237 stdin_path, 238 stdout_path, 239 stderr_path, 240 no_stdio, 241 launch_flavor, 242 g_disable_aslr, 243 process_event, 244 launch_err_str, 245 sizeof(launch_err_str)); 246 247 g_pid = pid; 248 249 if (pid == INVALID_NUB_PROCESS && strlen (launch_err_str) > 0) 250 { 251 DNBLogThreaded ("%s DNBProcessLaunch() returned error: '%s'", __FUNCTION__, launch_err_str); 252 ctx.LaunchStatus().SetError(-1, DNBError::Generic); 253 ctx.LaunchStatus().SetErrorString(launch_err_str); 254 } 255 else if (pid == INVALID_NUB_PROCESS) 256 { 257 DNBLogThreaded ("%s DNBProcessLaunch() failed to launch process, unknown failure", __FUNCTION__); 258 ctx.LaunchStatus().SetError(-1, DNBError::Generic); 259 ctx.LaunchStatus().SetErrorString("<unknown failure>"); 260 } 261 else 262 { 263 ctx.LaunchStatus().Clear(); 264 } 265 266 if (remote->Comm().IsConnected()) 267 { 268 // It we are connected already, the next thing gdb will do is ask 269 // whether the launch succeeded, and if not, whether there is an 270 // error code. So we need to fetch one packet from gdb before we wait 271 // on the stop from the target. 272 273 uint32_t event_mask = RNBContext::event_read_packet_available; 274 nub_event_t set_events = ctx.Events().WaitForSetEvents(event_mask); 275 276 if (set_events & RNBContext::event_read_packet_available) 277 { 278 rnb_err_t err = rnb_err; 279 RNBRemote::PacketEnum type; 280 281 err = remote->HandleReceivedPacket (&type); 282 283 if (err != rnb_success) 284 { 285 DNBLogThreadedIf (LOG_RNB_MINIMAL, "%s Error getting packet.", __FUNCTION__); 286 return eRNBRunLoopModeExit; 287 } 288 if (type != RNBRemote::query_launch_success) 289 { 290 DNBLogThreadedIf (LOG_RNB_MINIMAL, "%s Didn't get the expected qLaunchSuccess packet.", __FUNCTION__); 291 } 292 } 293 } 294 295 while (pid != INVALID_NUB_PROCESS) 296 { 297 // Wait for process to start up and hit entry point 298 DNBLogThreadedIf (LOG_RNB_EVENTS, "%s DNBProcessWaitForEvent (%4.4x, eEventProcessRunningStateChanged | eEventProcessStoppedStateChanged, true, INFINITE)...", __FUNCTION__, pid); 299 nub_event_t set_events = DNBProcessWaitForEvents (pid, eEventProcessRunningStateChanged | eEventProcessStoppedStateChanged, true, NULL); 300 DNBLogThreadedIf (LOG_RNB_EVENTS, "%s DNBProcessWaitForEvent (%4.4x, eEventProcessRunningStateChanged | eEventProcessStoppedStateChanged, true, INFINITE) => 0x%8.8x", __FUNCTION__, pid, set_events); 301 302 if (set_events == 0) 303 { 304 pid = INVALID_NUB_PROCESS; 305 g_pid = pid; 306 } 307 else 308 { 309 if (set_events & (eEventProcessRunningStateChanged | eEventProcessStoppedStateChanged)) 310 { 311 nub_state_t pid_state = DNBProcessGetState (pid); 312 DNBLogThreadedIf (LOG_RNB_EVENTS, "%s process %4.4x state changed (eEventProcessStateChanged): %s", __FUNCTION__, pid, DNBStateAsString(pid_state)); 313 314 switch (pid_state) 315 { 316 default: 317 case eStateInvalid: 318 case eStateUnloaded: 319 case eStateAttaching: 320 case eStateLaunching: 321 case eStateSuspended: 322 break; // Ignore 323 324 case eStateRunning: 325 case eStateStepping: 326 // Still waiting to stop at entry point... 327 break; 328 329 case eStateStopped: 330 case eStateCrashed: 331 ctx.SetProcessID(pid); 332 return eRNBRunLoopModeInferiorExecuting; 333 334 case eStateDetached: 335 case eStateExited: 336 pid = INVALID_NUB_PROCESS; 337 g_pid = pid; 338 return eRNBRunLoopModeExit; 339 } 340 } 341 342 DNBProcessResetEvents(pid, set_events); 343 } 344 } 345 346 return eRNBRunLoopModeExit; 347 } 348 349 350 //---------------------------------------------------------------------- 351 // This run loop mode will wait for the process to launch and hit its 352 // entry point. It will currently ignore all events except for the 353 // process state changed event, where it watches for the process stopped 354 // or crash process state. 355 //---------------------------------------------------------------------- 356 RNBRunLoopMode 357 RNBRunLoopLaunchAttaching (RNBRemote *remote, nub_process_t attach_pid, nub_process_t& pid) 358 { 359 RNBContext& ctx = remote->Context(); 360 361 DNBLogThreadedIf (LOG_RNB_MINIMAL, "%s Attaching to pid %i...", __FUNCTION__, attach_pid); 362 char err_str[1024]; 363 pid = DNBProcessAttach (attach_pid, NULL, err_str, sizeof(err_str)); 364 g_pid = pid; 365 366 if (pid == INVALID_NUB_PROCESS) 367 { 368 ctx.LaunchStatus().SetError(-1, DNBError::Generic); 369 if (err_str[0]) 370 ctx.LaunchStatus().SetErrorString(err_str); 371 return eRNBRunLoopModeExit; 372 } 373 else 374 { 375 ctx.SetProcessID(pid); 376 return eRNBRunLoopModeInferiorExecuting; 377 } 378 } 379 380 //---------------------------------------------------------------------- 381 // Watch for signals: 382 // SIGINT: so we can halt our inferior. (disabled for now) 383 // SIGPIPE: in case our child process dies 384 //---------------------------------------------------------------------- 385 int g_sigint_received = 0; 386 int g_sigpipe_received = 0; 387 void 388 signal_handler(int signo) 389 { 390 DNBLogThreadedIf (LOG_RNB_MINIMAL, "%s (%s)", __FUNCTION__, SysSignal::Name(signo)); 391 392 switch (signo) 393 { 394 case SIGINT: 395 g_sigint_received++; 396 if (g_pid != INVALID_NUB_PROCESS) 397 { 398 // Only send a SIGINT once... 399 if (g_sigint_received == 1) 400 { 401 switch (DNBProcessGetState (g_pid)) 402 { 403 case eStateRunning: 404 case eStateStepping: 405 DNBProcessSignal (g_pid, SIGSTOP); 406 return; 407 default: 408 break; 409 } 410 } 411 } 412 exit (SIGINT); 413 break; 414 415 case SIGPIPE: 416 g_sigpipe_received = 1; 417 break; 418 } 419 } 420 421 // Return the new run loop mode based off of the current process state 422 RNBRunLoopMode 423 HandleProcessStateChange (RNBRemote *remote, bool initialize) 424 { 425 RNBContext& ctx = remote->Context(); 426 nub_process_t pid = ctx.ProcessID(); 427 428 if (pid == INVALID_NUB_PROCESS) 429 { 430 DNBLogThreadedIf (LOG_RNB_MINIMAL, "#### %s error: pid invalid, exiting...", __FUNCTION__); 431 return eRNBRunLoopModeExit; 432 } 433 nub_state_t pid_state = DNBProcessGetState (pid); 434 435 DNBLogThreadedIf (LOG_RNB_MINIMAL, "%s (&remote, initialize=%i) pid_state = %s", __FUNCTION__, (int)initialize, DNBStateAsString (pid_state)); 436 437 switch (pid_state) 438 { 439 case eStateInvalid: 440 case eStateUnloaded: 441 // Something bad happened 442 return eRNBRunLoopModeExit; 443 break; 444 445 case eStateAttaching: 446 case eStateLaunching: 447 return eRNBRunLoopModeInferiorExecuting; 448 449 case eStateSuspended: 450 case eStateCrashed: 451 case eStateStopped: 452 // If we stop due to a signal, so clear the fact that we got a SIGINT 453 // so we can stop ourselves again (but only while our inferior 454 // process is running..) 455 g_sigint_received = 0; 456 if (initialize == false) 457 { 458 // Compare the last stop count to our current notion of a stop count 459 // to make sure we don't notify more than once for a given stop. 460 nub_size_t prev_pid_stop_count = ctx.GetProcessStopCount(); 461 bool pid_stop_count_changed = ctx.SetProcessStopCount(DNBProcessGetStopCount(pid)); 462 if (pid_stop_count_changed) 463 { 464 remote->FlushSTDIO(); 465 466 if (ctx.GetProcessStopCount() == 1) 467 { 468 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); 469 } 470 else 471 { 472 473 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); 474 remote->NotifyThatProcessStopped (); 475 } 476 } 477 else 478 { 479 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); 480 } 481 } 482 return eRNBRunLoopModeInferiorExecuting; 483 484 case eStateStepping: 485 case eStateRunning: 486 return eRNBRunLoopModeInferiorExecuting; 487 488 case eStateExited: 489 remote->HandlePacket_last_signal(NULL); 490 case eStateDetached: 491 return eRNBRunLoopModeExit; 492 493 } 494 495 // Catch all... 496 return eRNBRunLoopModeExit; 497 } 498 // This function handles the case where our inferior program is stopped and 499 // we are waiting for gdb remote protocol packets. When a packet occurs that 500 // makes the inferior run, we need to leave this function with a new state 501 // as the return code. 502 RNBRunLoopMode 503 RNBRunLoopInferiorExecuting (RNBRemote *remote) 504 { 505 DNBLogThreadedIf (LOG_RNB_MINIMAL, "#### %s", __FUNCTION__); 506 RNBContext& ctx = remote->Context(); 507 508 // Init our mode and set 'is_running' based on the current process state 509 RNBRunLoopMode mode = HandleProcessStateChange (remote, true); 510 511 while (ctx.ProcessID() != INVALID_NUB_PROCESS) 512 { 513 514 std::string set_events_str; 515 uint32_t event_mask = ctx.NormalEventBits(); 516 517 if (!ctx.ProcessStateRunning()) 518 { 519 // Clear some bits if we are not running so we don't send any async packets 520 event_mask &= ~RNBContext::event_proc_stdio_available; 521 event_mask &= ~RNBContext::event_proc_profile_data; 522 } 523 524 // We want to make sure we consume all process state changes and have 525 // whomever is notifying us to wait for us to reset the event bit before 526 // continuing. 527 //ctx.Events().SetResetAckMask (RNBContext::event_proc_state_changed); 528 529 DNBLogThreadedIf (LOG_RNB_EVENTS, "%s ctx.Events().WaitForSetEvents(0x%08x) ...",__FUNCTION__, event_mask); 530 nub_event_t set_events = ctx.Events().WaitForSetEvents(event_mask); 531 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)); 532 533 if (set_events) 534 { 535 if ((set_events & RNBContext::event_proc_thread_exiting) || 536 (set_events & RNBContext::event_proc_stdio_available)) 537 { 538 remote->FlushSTDIO(); 539 } 540 541 if (set_events & RNBContext::event_proc_profile_data) 542 { 543 remote->SendAsyncProfileData(); 544 } 545 546 if (set_events & RNBContext::event_read_packet_available) 547 { 548 // handleReceivedPacket will take care of resetting the 549 // event_read_packet_available events when there are no more... 550 set_events ^= RNBContext::event_read_packet_available; 551 552 if (ctx.ProcessStateRunning()) 553 { 554 if (remote->HandleAsyncPacket() == rnb_not_connected) 555 { 556 // TODO: connect again? Exit? 557 } 558 } 559 else 560 { 561 if (remote->HandleReceivedPacket() == rnb_not_connected) 562 { 563 // TODO: connect again? Exit? 564 } 565 } 566 } 567 568 if (set_events & RNBContext::event_proc_state_changed) 569 { 570 mode = HandleProcessStateChange (remote, false); 571 ctx.Events().ResetEvents(RNBContext::event_proc_state_changed); 572 set_events ^= RNBContext::event_proc_state_changed; 573 } 574 575 if (set_events & RNBContext::event_proc_thread_exiting) 576 { 577 mode = eRNBRunLoopModeExit; 578 } 579 580 if (set_events & RNBContext::event_read_thread_exiting) 581 { 582 // Out remote packet receiving thread exited, exit for now. 583 if (ctx.HasValidProcessID()) 584 { 585 // TODO: We should add code that will leave the current process 586 // in its current state and listen for another connection... 587 if (ctx.ProcessStateRunning()) 588 { 589 if (ctx.GetDetachOnError()) 590 { 591 DNBLog ("debugserver's event read thread is exiting, detaching from the inferior process."); 592 DNBProcessDetach (ctx.ProcessID()); 593 } 594 else 595 { 596 DNBLog ("debugserver's event read thread is exiting, killing the inferior process."); 597 DNBProcessKill (ctx.ProcessID()); 598 } 599 } 600 else 601 { 602 if (ctx.GetDetachOnError()) 603 { 604 DNBLog ("debugserver's event read thread is exiting, detaching from the inferior process."); 605 DNBProcessDetach (ctx.ProcessID()); 606 } 607 } 608 } 609 mode = eRNBRunLoopModeExit; 610 } 611 } 612 613 // Reset all event bits that weren't reset for now... 614 if (set_events != 0) 615 ctx.Events().ResetEvents(set_events); 616 617 if (mode != eRNBRunLoopModeInferiorExecuting) 618 break; 619 } 620 621 return mode; 622 } 623 624 625 RNBRunLoopMode 626 RNBRunLoopPlatform (RNBRemote *remote) 627 { 628 RNBRunLoopMode mode = eRNBRunLoopModePlatformMode; 629 RNBContext& ctx = remote->Context(); 630 631 while (mode == eRNBRunLoopModePlatformMode) 632 { 633 std::string set_events_str; 634 const uint32_t event_mask = RNBContext::event_read_packet_available | 635 RNBContext::event_read_thread_exiting; 636 637 DNBLogThreadedIf (LOG_RNB_EVENTS, "%s ctx.Events().WaitForSetEvents(0x%08x) ...",__FUNCTION__, event_mask); 638 nub_event_t set_events = ctx.Events().WaitForSetEvents(event_mask); 639 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)); 640 641 if (set_events) 642 { 643 if (set_events & RNBContext::event_read_packet_available) 644 { 645 if (remote->HandleReceivedPacket() == rnb_not_connected) 646 mode = eRNBRunLoopModeExit; 647 } 648 649 if (set_events & RNBContext::event_read_thread_exiting) 650 { 651 mode = eRNBRunLoopModeExit; 652 } 653 ctx.Events().ResetEvents(set_events); 654 } 655 } 656 return eRNBRunLoopModeExit; 657 } 658 659 //---------------------------------------------------------------------- 660 // Convenience function to set up the remote listening port 661 // Returns 1 for success 0 for failure. 662 //---------------------------------------------------------------------- 663 664 static void 665 PortWasBoundCallbackUnixSocket (const void *baton, in_port_t port) 666 { 667 //::printf ("PortWasBoundCallbackUnixSocket (baton = %p, port = %u)\n", baton, port); 668 669 const char *unix_socket_name = (const char *)baton; 670 671 if (unix_socket_name && unix_socket_name[0]) 672 { 673 // We were given a unix socket name to use to communicate the port 674 // that we ended up binding to back to our parent process 675 struct sockaddr_un saddr_un; 676 int s = ::socket (AF_UNIX, SOCK_STREAM, 0); 677 if (s < 0) 678 { 679 perror("error: socket (AF_UNIX, SOCK_STREAM, 0)"); 680 exit(1); 681 } 682 683 saddr_un.sun_family = AF_UNIX; 684 ::strncpy(saddr_un.sun_path, unix_socket_name, sizeof(saddr_un.sun_path) - 1); 685 saddr_un.sun_path[sizeof(saddr_un.sun_path) - 1] = '\0'; 686 saddr_un.sun_len = SUN_LEN (&saddr_un); 687 688 if (::connect (s, (struct sockaddr *)&saddr_un, static_cast<socklen_t>(SUN_LEN (&saddr_un))) < 0) 689 { 690 perror("error: connect (socket, &saddr_un, saddr_un_len)"); 691 exit(1); 692 } 693 694 //::printf ("connect () sucess!!\n"); 695 696 697 // We were able to connect to the socket, now write our PID so whomever 698 // launched us will know this process's ID 699 RNBLogSTDOUT ("Listening to port %i...\n", port); 700 701 char pid_str[64]; 702 const int pid_str_len = ::snprintf (pid_str, sizeof(pid_str), "%u", port); 703 const ssize_t bytes_sent = ::send (s, pid_str, pid_str_len, 0); 704 705 if (pid_str_len != bytes_sent) 706 { 707 perror("error: send (s, pid_str, pid_str_len, 0)"); 708 exit (1); 709 } 710 711 //::printf ("send () sucess!!\n"); 712 713 // We are done with the socket 714 close (s); 715 } 716 } 717 718 static void 719 PortWasBoundCallbackNamedPipe (const void *baton, uint16_t port) 720 { 721 const char *named_pipe = (const char *)baton; 722 if (named_pipe && named_pipe[0]) 723 { 724 int fd = ::open(named_pipe, O_WRONLY); 725 if (fd > -1) 726 { 727 char port_str[64]; 728 const ssize_t port_str_len = ::snprintf (port_str, sizeof(port_str), "%u", port); 729 // Write the port number as a C string with the NULL terminator 730 ::write (fd, port_str, port_str_len + 1); 731 close (fd); 732 } 733 } 734 } 735 736 static int 737 ConnectRemote (RNBRemote *remote, 738 const char *host, 739 int port, 740 bool reverse_connect, 741 const char *named_pipe_path, 742 const char *unix_socket_name) 743 { 744 if (!remote->Comm().IsConnected()) 745 { 746 if (reverse_connect) 747 { 748 if (port == 0) 749 { 750 DNBLogThreaded("error: invalid port supplied for reverse connection: %i.\n", port); 751 return 0; 752 } 753 if (remote->Comm().Connect(host, port) != rnb_success) 754 { 755 DNBLogThreaded("Failed to reverse connect to %s:%i.\n", host, port); 756 return 0; 757 } 758 } 759 else 760 { 761 if (port != 0) 762 RNBLogSTDOUT ("Listening to port %i for a connection from %s...\n", port, host ? host : "127.0.0.1"); 763 if (unix_socket_name && unix_socket_name[0]) 764 { 765 if (remote->Comm().Listen(host, port, PortWasBoundCallbackUnixSocket, unix_socket_name) != rnb_success) 766 { 767 RNBLogSTDERR ("Failed to get connection from a remote gdb process.\n"); 768 return 0; 769 } 770 } 771 else 772 { 773 if (remote->Comm().Listen(host, port, PortWasBoundCallbackNamedPipe, named_pipe_path) != rnb_success) 774 { 775 RNBLogSTDERR ("Failed to get connection from a remote gdb process.\n"); 776 return 0; 777 } 778 } 779 } 780 remote->StartReadRemoteDataThread(); 781 } 782 return 1; 783 } 784 785 //---------------------------------------------------------------------- 786 // ASL Logging callback that can be registered with DNBLogSetLogCallback 787 //---------------------------------------------------------------------- 788 void 789 ASLLogCallback(void *baton, uint32_t flags, const char *format, va_list args) 790 { 791 if (format == NULL) 792 return; 793 static aslmsg g_aslmsg = NULL; 794 if (g_aslmsg == NULL) 795 { 796 g_aslmsg = ::asl_new (ASL_TYPE_MSG); 797 char asl_key_sender[PATH_MAX]; 798 snprintf(asl_key_sender, sizeof(asl_key_sender), "com.apple.%s-%s", DEBUGSERVER_PROGRAM_NAME, DEBUGSERVER_VERSION_STR); 799 ::asl_set (g_aslmsg, ASL_KEY_SENDER, asl_key_sender); 800 } 801 802 int asl_level; 803 if (flags & DNBLOG_FLAG_FATAL) asl_level = ASL_LEVEL_CRIT; 804 else if (flags & DNBLOG_FLAG_ERROR) asl_level = ASL_LEVEL_ERR; 805 else if (flags & DNBLOG_FLAG_WARNING) asl_level = ASL_LEVEL_WARNING; 806 else if (flags & DNBLOG_FLAG_VERBOSE) asl_level = ASL_LEVEL_WARNING; //ASL_LEVEL_INFO; 807 else asl_level = ASL_LEVEL_WARNING; //ASL_LEVEL_DEBUG; 808 809 ::asl_vlog (NULL, g_aslmsg, asl_level, format, args); 810 } 811 812 //---------------------------------------------------------------------- 813 // FILE based Logging callback that can be registered with 814 // DNBLogSetLogCallback 815 //---------------------------------------------------------------------- 816 void 817 FileLogCallback(void *baton, uint32_t flags, const char *format, va_list args) 818 { 819 if (baton == NULL || format == NULL) 820 return; 821 822 ::vfprintf ((FILE *)baton, format, args); 823 ::fprintf ((FILE *)baton, "\n"); 824 } 825 826 827 void 828 show_usage_and_exit (int exit_code) 829 { 830 RNBLogSTDERR ("Usage:\n %s host:port [program-name program-arg1 program-arg2 ...]\n", DEBUGSERVER_PROGRAM_NAME); 831 RNBLogSTDERR (" %s /path/file [program-name program-arg1 program-arg2 ...]\n", DEBUGSERVER_PROGRAM_NAME); 832 RNBLogSTDERR (" %s host:port --attach=<pid>\n", DEBUGSERVER_PROGRAM_NAME); 833 RNBLogSTDERR (" %s /path/file --attach=<pid>\n", DEBUGSERVER_PROGRAM_NAME); 834 RNBLogSTDERR (" %s host:port --attach=<process_name>\n", DEBUGSERVER_PROGRAM_NAME); 835 RNBLogSTDERR (" %s /path/file --attach=<process_name>\n", DEBUGSERVER_PROGRAM_NAME); 836 exit (exit_code); 837 } 838 839 840 //---------------------------------------------------------------------- 841 // option descriptors for getopt_long_only() 842 //---------------------------------------------------------------------- 843 static struct option g_long_options[] = 844 { 845 { "attach", required_argument, NULL, 'a' }, 846 { "arch", required_argument, NULL, 'A' }, 847 { "debug", no_argument, NULL, 'g' }, 848 { "kill-on-error", no_argument, NULL, 'K' }, 849 { "verbose", no_argument, NULL, 'v' }, 850 { "lockdown", no_argument, &g_lockdown_opt, 1 }, // short option "-k" 851 { "applist", no_argument, &g_applist_opt, 1 }, // short option "-t" 852 { "log-file", required_argument, NULL, 'l' }, 853 { "log-flags", required_argument, NULL, 'f' }, 854 { "launch", required_argument, NULL, 'x' }, // Valid values are "auto", "posix-spawn", "fork-exec", "springboard" (arm only) 855 { "waitfor", required_argument, NULL, 'w' }, // Wait for a process whose name starts with ARG 856 { "waitfor-interval", required_argument, NULL, 'i' }, // Time in usecs to wait between sampling the pid list when waiting for a process by name 857 { "waitfor-duration", required_argument, NULL, 'd' }, // The time in seconds to wait for a process to show up by name 858 { "native-regs", no_argument, NULL, 'r' }, // Specify to use the native registers instead of the gdb defaults for the architecture. 859 { "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) 860 { "stdin-path", required_argument, NULL, 'I' }, // Set the STDIN path to be used when launching applications (only if debugserver launches the process) 861 { "stdout-path", required_argument, NULL, 'O' }, // Set the STDOUT path to be used when launching applications (only if debugserver launches the process) 862 { "stderr-path", required_argument, NULL, 'E' }, // Set the STDERR path to be used when launching applications (only if debugserver launches the process) 863 { "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) 864 { "setsid", no_argument, NULL, 'S' }, // call setsid() to make debugserver run in its own session 865 { "disable-aslr", no_argument, NULL, 'D' }, // Use _POSIX_SPAWN_DISABLE_ASLR to avoid shared library randomization 866 { "working-dir", required_argument, NULL, 'W' }, // The working directory that the inferior process should have (only if debugserver launches the process) 867 { "platform", required_argument, NULL, 'p' }, // Put this executable into a remote platform mode 868 { "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 869 { "named-pipe", required_argument, NULL, 'P' }, 870 { "reverse-connect", no_argument, NULL, 'R' }, 871 { "env", required_argument, NULL, 'e' }, // When debugserver launches the process, set a single environment entry as specified by the option value ("./debugserver -e FOO=1 -e BAR=2 localhost:1234 -- /bin/ls") 872 { "forward-env", no_argument, NULL, 'F' }, // When debugserver launches the process, forward debugserver's current environment variables to the child process ("./debugserver -F localhost:1234 -- /bin/ls" 873 { NULL, 0, NULL, 0 } 874 }; 875 876 877 //---------------------------------------------------------------------- 878 // main 879 //---------------------------------------------------------------------- 880 int 881 main (int argc, char *argv[]) 882 { 883 const char *argv_sub_zero = argv[0]; // save a copy of argv[0] for error reporting post-launch 884 885 #if defined (__APPLE__) 886 pthread_setname_np ("main thread"); 887 #if defined (__arm__) || defined (__arm64__) || defined (__aarch64__) 888 struct sched_param thread_param; 889 int thread_sched_policy; 890 if (pthread_getschedparam(pthread_self(), &thread_sched_policy, &thread_param) == 0) 891 { 892 thread_param.sched_priority = 47; 893 pthread_setschedparam(pthread_self(), thread_sched_policy, &thread_param); 894 } 895 896 ::proc_set_wakemon_params (getpid(), 500, 0); // Allow up to 500 wakeups/sec to avoid EXC_RESOURCE for normal use. 897 #endif 898 #endif 899 900 g_isatty = ::isatty (STDIN_FILENO); 901 902 // ::printf ("uid=%u euid=%u gid=%u egid=%u\n", 903 // getuid(), 904 // geteuid(), 905 // getgid(), 906 // getegid()); 907 908 909 // signal (SIGINT, signal_handler); 910 signal (SIGPIPE, signal_handler); 911 signal (SIGHUP, signal_handler); 912 913 // We're always sitting in waitpid or kevent waiting on our target process' death, 914 // we don't need no stinking SIGCHLD's... 915 916 sigset_t sigset; 917 sigemptyset(&sigset); 918 sigaddset(&sigset, SIGCHLD); 919 sigprocmask(SIG_BLOCK, &sigset, NULL); 920 921 g_remoteSP.reset (new RNBRemote ()); 922 923 924 RNBRemote *remote = g_remoteSP.get(); 925 if (remote == NULL) 926 { 927 RNBLogSTDERR ("error: failed to create a remote connection class\n"); 928 return -1; 929 } 930 931 RNBContext& ctx = remote->Context(); 932 933 int i; 934 int attach_pid = INVALID_NUB_PROCESS; 935 936 FILE* log_file = NULL; 937 uint32_t log_flags = 0; 938 // Parse our options 939 int ch; 940 int long_option_index = 0; 941 int debug = 0; 942 std::string compile_options; 943 std::string waitfor_pid_name; // Wait for a process that starts with this name 944 std::string attach_pid_name; 945 std::string arch_name; 946 std::string working_dir; // The new working directory to use for the inferior 947 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 948 std::string named_pipe_path; // If we need to handshake with our parent process, an option will be passed down that specifies a named pipe to use 949 useconds_t waitfor_interval = 1000; // Time in usecs between process lists polls when waiting for a process by name, default 1 msec. 950 useconds_t waitfor_duration = 0; // Time in seconds to wait for a process by name, 0 means wait forever. 951 bool no_stdio = false; 952 bool reverse_connect = false; // Set to true by an option to indicate we should reverse connect to the host:port supplied as the first debugserver argument 953 954 #if !defined (DNBLOG_ENABLED) 955 compile_options += "(no-logging) "; 956 #endif 957 958 RNBRunLoopMode start_mode = eRNBRunLoopModeExit; 959 960 char short_options[512]; 961 uint32_t short_options_idx = 0; 962 963 // Handle the two case that don't have short options in g_long_options 964 short_options[short_options_idx++] = 'k'; 965 short_options[short_options_idx++] = 't'; 966 967 for (i=0; g_long_options[i].name != NULL; ++i) 968 { 969 if (isalpha(g_long_options[i].val)) 970 { 971 short_options[short_options_idx++] = g_long_options[i].val; 972 switch (g_long_options[i].has_arg) 973 { 974 default: 975 case no_argument: 976 break; 977 978 case optional_argument: 979 short_options[short_options_idx++] = ':'; 980 // Fall through to required_argument case below... 981 case required_argument: 982 short_options[short_options_idx++] = ':'; 983 break; 984 } 985 } 986 } 987 // NULL terminate the short option string. 988 short_options[short_options_idx++] = '\0'; 989 990 #if __GLIBC__ 991 optind = 0; 992 #else 993 optreset = 1; 994 optind = 1; 995 #endif 996 997 while ((ch = getopt_long_only(argc, argv, short_options, g_long_options, &long_option_index)) != -1) 998 { 999 DNBLogDebug("option: ch == %c (0x%2.2x) --%s%c%s\n", 1000 ch, (uint8_t)ch, 1001 g_long_options[long_option_index].name, 1002 g_long_options[long_option_index].has_arg ? '=' : ' ', 1003 optarg ? optarg : ""); 1004 switch (ch) 1005 { 1006 case 0: // Any optional that auto set themselves will return 0 1007 break; 1008 1009 case 'A': 1010 if (optarg && optarg[0]) 1011 arch_name.assign(optarg); 1012 break; 1013 1014 case 'a': 1015 if (optarg && optarg[0]) 1016 { 1017 if (isdigit(optarg[0])) 1018 { 1019 char *end = NULL; 1020 attach_pid = static_cast<int>(strtoul(optarg, &end, 0)); 1021 if (end == NULL || *end != '\0') 1022 { 1023 RNBLogSTDERR ("error: invalid pid option '%s'\n", optarg); 1024 exit (4); 1025 } 1026 } 1027 else 1028 { 1029 attach_pid_name = optarg; 1030 } 1031 start_mode = eRNBRunLoopModeInferiorAttaching; 1032 } 1033 break; 1034 1035 // --waitfor=NAME 1036 case 'w': 1037 if (optarg && optarg[0]) 1038 { 1039 waitfor_pid_name = optarg; 1040 start_mode = eRNBRunLoopModeInferiorAttaching; 1041 } 1042 break; 1043 1044 // --waitfor-interval=USEC 1045 case 'i': 1046 if (optarg && optarg[0]) 1047 { 1048 char *end = NULL; 1049 waitfor_interval = static_cast<useconds_t>(strtoul(optarg, &end, 0)); 1050 if (end == NULL || *end != '\0') 1051 { 1052 RNBLogSTDERR ("error: invalid waitfor-interval option value '%s'.\n", optarg); 1053 exit (6); 1054 } 1055 } 1056 break; 1057 1058 // --waitfor-duration=SEC 1059 case 'd': 1060 if (optarg && optarg[0]) 1061 { 1062 char *end = NULL; 1063 waitfor_duration = static_cast<useconds_t>(strtoul(optarg, &end, 0)); 1064 if (end == NULL || *end != '\0') 1065 { 1066 RNBLogSTDERR ("error: invalid waitfor-duration option value '%s'.\n", optarg); 1067 exit (7); 1068 } 1069 } 1070 break; 1071 1072 case 'K': 1073 g_detach_on_error = false; 1074 1075 case 'W': 1076 if (optarg && optarg[0]) 1077 working_dir.assign(optarg); 1078 break; 1079 1080 case 'x': 1081 if (optarg && optarg[0]) 1082 { 1083 if (strcasecmp(optarg, "auto") == 0) 1084 g_launch_flavor = eLaunchFlavorDefault; 1085 else if (strcasestr(optarg, "posix") == optarg) 1086 g_launch_flavor = eLaunchFlavorPosixSpawn; 1087 else if (strcasestr(optarg, "fork") == optarg) 1088 g_launch_flavor = eLaunchFlavorForkExec; 1089 #ifdef WITH_SPRINGBOARD 1090 else if (strcasestr(optarg, "spring") == optarg) 1091 g_launch_flavor = eLaunchFlavorSpringBoard; 1092 #endif 1093 #ifdef WITH_BKS 1094 else if (strcasestr(optarg, "backboard") == optarg) 1095 g_launch_flavor = eLaunchFlavorBKS; 1096 #endif 1097 1098 else 1099 { 1100 RNBLogSTDERR ("error: invalid TYPE for the --launch=TYPE (-x TYPE) option: '%s'\n", optarg); 1101 RNBLogSTDERR ("Valid values TYPE are:\n"); 1102 RNBLogSTDERR (" auto Auto-detect the best launch method to use.\n"); 1103 RNBLogSTDERR (" posix Launch the executable using posix_spawn.\n"); 1104 RNBLogSTDERR (" fork Launch the executable using fork and exec.\n"); 1105 #ifdef WITH_SPRINGBOARD 1106 RNBLogSTDERR (" spring Launch the executable through Springboard.\n"); 1107 #endif 1108 #ifdef WITH_BKS 1109 RNBLogSTDERR (" backboard Launch the executable through BackBoard Services.\n"); 1110 #endif 1111 exit (5); 1112 } 1113 } 1114 break; 1115 1116 case 'l': // Set Log File 1117 if (optarg && optarg[0]) 1118 { 1119 if (strcasecmp(optarg, "stdout") == 0) 1120 log_file = stdout; 1121 else if (strcasecmp(optarg, "stderr") == 0) 1122 log_file = stderr; 1123 else 1124 { 1125 log_file = fopen(optarg, "w"); 1126 if (log_file != NULL) 1127 setlinebuf(log_file); 1128 } 1129 1130 if (log_file == NULL) 1131 { 1132 const char *errno_str = strerror(errno); 1133 RNBLogSTDERR ("Failed to open log file '%s' for writing: errno = %i (%s)", optarg, errno, errno_str ? errno_str : "unknown error"); 1134 } 1135 } 1136 break; 1137 1138 case 'f': // Log Flags 1139 if (optarg && optarg[0]) 1140 log_flags = static_cast<uint32_t>(strtoul(optarg, NULL, 0)); 1141 break; 1142 1143 case 'g': 1144 debug = 1; 1145 DNBLogSetDebug(debug); 1146 break; 1147 1148 case 't': 1149 g_applist_opt = 1; 1150 break; 1151 1152 case 'k': 1153 g_lockdown_opt = 1; 1154 break; 1155 1156 case 'r': 1157 // Do nothing, native regs is the default these days 1158 break; 1159 1160 case 'R': 1161 reverse_connect = true; 1162 break; 1163 case 'v': 1164 DNBLogSetVerbose(1); 1165 break; 1166 1167 case 's': 1168 ctx.GetSTDIN().assign(optarg); 1169 ctx.GetSTDOUT().assign(optarg); 1170 ctx.GetSTDERR().assign(optarg); 1171 break; 1172 1173 case 'I': 1174 ctx.GetSTDIN().assign(optarg); 1175 break; 1176 1177 case 'O': 1178 ctx.GetSTDOUT().assign(optarg); 1179 break; 1180 1181 case 'E': 1182 ctx.GetSTDERR().assign(optarg); 1183 break; 1184 1185 case 'n': 1186 no_stdio = true; 1187 break; 1188 1189 case 'S': 1190 // Put debugserver into a new session. Terminals group processes 1191 // into sessions and when a special terminal key sequences 1192 // (like control+c) are typed they can cause signals to go out to 1193 // all processes in a session. Using this --setsid (-S) option 1194 // will cause debugserver to run in its own sessions and be free 1195 // from such issues. 1196 // 1197 // This is useful when debugserver is spawned from a command 1198 // line application that uses debugserver to do the debugging, 1199 // yet that application doesn't want debugserver receiving the 1200 // signals sent to the session (i.e. dying when anyone hits ^C). 1201 setsid(); 1202 break; 1203 case 'D': 1204 g_disable_aslr = 1; 1205 break; 1206 1207 case 'p': 1208 start_mode = eRNBRunLoopModePlatformMode; 1209 break; 1210 1211 case 'u': 1212 unix_socket_name.assign (optarg); 1213 break; 1214 1215 case 'P': 1216 named_pipe_path.assign (optarg); 1217 break; 1218 1219 case 'e': 1220 // Pass a single specified environment variable down to the process that gets launched 1221 remote->Context().PushEnvironment(optarg); 1222 break; 1223 1224 case 'F': 1225 // Pass the current environment down to the process that gets launched 1226 { 1227 char **host_env = *_NSGetEnviron(); 1228 char *env_entry; 1229 size_t i; 1230 for (i=0; (env_entry = host_env[i]) != NULL; ++i) 1231 remote->Context().PushEnvironment(env_entry); 1232 } 1233 break; 1234 } 1235 } 1236 1237 if (arch_name.empty()) 1238 { 1239 #if defined (__arm__) 1240 arch_name.assign ("arm"); 1241 #endif 1242 } 1243 else 1244 { 1245 DNBSetArchitecture (arch_name.c_str()); 1246 } 1247 1248 // if (arch_name.empty()) 1249 // { 1250 // fprintf(stderr, "error: no architecture was specified\n"); 1251 // exit (8); 1252 // } 1253 // Skip any options we consumed with getopt_long_only 1254 argc -= optind; 1255 argv += optind; 1256 1257 1258 if (!working_dir.empty()) 1259 { 1260 if (remote->Context().SetWorkingDirectory (working_dir.c_str()) == false) 1261 { 1262 RNBLogSTDERR ("error: working directory doesn't exist '%s'.\n", working_dir.c_str()); 1263 exit (8); 1264 } 1265 } 1266 1267 remote->Context().SetDetachOnError(g_detach_on_error); 1268 1269 remote->Initialize(); 1270 1271 // It is ok for us to set NULL as the logfile (this will disable any logging) 1272 1273 if (log_file != NULL) 1274 { 1275 DNBLogSetLogCallback(FileLogCallback, log_file); 1276 // If our log file was set, yet we have no log flags, log everything! 1277 if (log_flags == 0) 1278 log_flags = LOG_ALL | LOG_RNB_ALL; 1279 1280 DNBLogSetLogMask (log_flags); 1281 } 1282 else 1283 { 1284 // Enable DNB logging 1285 DNBLogSetLogCallback(ASLLogCallback, NULL); 1286 DNBLogSetLogMask (log_flags); 1287 1288 } 1289 1290 if (DNBLogEnabled()) 1291 { 1292 for (i=0; i<argc; i++) 1293 DNBLogDebug("argv[%i] = %s", i, argv[i]); 1294 } 1295 1296 // as long as we're dropping remotenub in as a replacement for gdbserver, 1297 // explicitly note that this is not gdbserver. 1298 1299 RNBLogSTDOUT ("%s-%s %sfor %s.\n", 1300 DEBUGSERVER_PROGRAM_NAME, 1301 DEBUGSERVER_VERSION_STR, 1302 compile_options.c_str(), 1303 RNB_ARCH); 1304 1305 std::string host; 1306 int port = INT32_MAX; 1307 char str[PATH_MAX]; 1308 str[0] = '\0'; 1309 1310 if (g_lockdown_opt == 0 && g_applist_opt == 0) 1311 { 1312 // Make sure we at least have port 1313 if (argc < 1) 1314 { 1315 show_usage_and_exit (1); 1316 } 1317 // accept 'localhost:' prefix on port number 1318 1319 int items_scanned = ::sscanf (argv[0], "%[^:]:%i", str, &port); 1320 if (items_scanned == 2) 1321 { 1322 host = str; 1323 DNBLogDebug("host = '%s' port = %i", host.c_str(), port); 1324 } 1325 else 1326 { 1327 // No hostname means "localhost" 1328 int items_scanned = ::sscanf (argv[0], "%i", &port); 1329 if (items_scanned == 1) 1330 { 1331 host = "127.0.0.1"; 1332 DNBLogDebug("host = '%s' port = %i", host.c_str(), port); 1333 } 1334 else if (argv[0][0] == '/') 1335 { 1336 port = INT32_MAX; 1337 strncpy(str, argv[0], sizeof(str)); 1338 } 1339 else 1340 { 1341 show_usage_and_exit (2); 1342 } 1343 } 1344 1345 // We just used the 'host:port' or the '/path/file' arg... 1346 argc--; 1347 argv++; 1348 1349 } 1350 1351 // If we know we're waiting to attach, we don't need any of this other info. 1352 if (start_mode != eRNBRunLoopModeInferiorAttaching && 1353 start_mode != eRNBRunLoopModePlatformMode) 1354 { 1355 if (argc == 0 || g_lockdown_opt) 1356 { 1357 if (g_lockdown_opt != 0) 1358 { 1359 // Work around for SIGPIPE crashes due to posix_spawn issue. 1360 // We have to close STDOUT and STDERR, else the first time we 1361 // try and do any, we get SIGPIPE and die as posix_spawn is 1362 // doing bad things with our file descriptors at the moment. 1363 int null = open("/dev/null", O_RDWR); 1364 dup2(null, STDOUT_FILENO); 1365 dup2(null, STDERR_FILENO); 1366 } 1367 else if (g_applist_opt != 0) 1368 { 1369 // List all applications we are able to see 1370 std::string applist_plist; 1371 int err = ListApplications(applist_plist, false, false); 1372 if (err == 0) 1373 { 1374 fputs (applist_plist.c_str(), stdout); 1375 } 1376 else 1377 { 1378 RNBLogSTDERR ("error: ListApplications returned error %i\n", err); 1379 } 1380 // Exit with appropriate error if we were asked to list the applications 1381 // with no other args were given (and we weren't trying to do this over 1382 // lockdown) 1383 return err; 1384 } 1385 1386 DNBLogDebug("Get args from remote protocol..."); 1387 start_mode = eRNBRunLoopModeGetStartModeFromRemoteProtocol; 1388 } 1389 else 1390 { 1391 start_mode = eRNBRunLoopModeInferiorLaunching; 1392 // Fill in the argv array in the context from the rest of our args. 1393 // Skip the name of this executable and the port number 1394 for (int i = 0; i < argc; i++) 1395 { 1396 DNBLogDebug("inferior_argv[%i] = '%s'", i, argv[i]); 1397 ctx.PushArgument (argv[i]); 1398 } 1399 } 1400 } 1401 1402 if (start_mode == eRNBRunLoopModeExit) 1403 return -1; 1404 1405 RNBRunLoopMode mode = start_mode; 1406 char err_str[1024] = {'\0'}; 1407 1408 while (mode != eRNBRunLoopModeExit) 1409 { 1410 switch (mode) 1411 { 1412 case eRNBRunLoopModeGetStartModeFromRemoteProtocol: 1413 #ifdef WITH_LOCKDOWN 1414 if (g_lockdown_opt) 1415 { 1416 if (!remote->Comm().IsConnected()) 1417 { 1418 if (remote->Comm().ConnectToService () != rnb_success) 1419 { 1420 RNBLogSTDERR ("Failed to get connection from a remote gdb process.\n"); 1421 mode = eRNBRunLoopModeExit; 1422 } 1423 else if (g_applist_opt != 0) 1424 { 1425 // List all applications we are able to see 1426 std::string applist_plist; 1427 if (ListApplications(applist_plist, false, false) == 0) 1428 { 1429 DNBLogDebug("Task list: %s", applist_plist.c_str()); 1430 1431 remote->Comm().Write(applist_plist.c_str(), applist_plist.size()); 1432 // Issue a read that will never yield any data until the other side 1433 // closes the socket so this process doesn't just exit and cause the 1434 // socket to close prematurely on the other end and cause data loss. 1435 std::string buf; 1436 remote->Comm().Read(buf); 1437 } 1438 remote->Comm().Disconnect(false); 1439 mode = eRNBRunLoopModeExit; 1440 break; 1441 } 1442 else 1443 { 1444 // Start watching for remote packets 1445 remote->StartReadRemoteDataThread(); 1446 } 1447 } 1448 } 1449 else 1450 #endif 1451 if (port != INT32_MAX) 1452 { 1453 if (!ConnectRemote (remote, host.c_str(), port, reverse_connect, named_pipe_path.c_str(), unix_socket_name.c_str())) 1454 mode = eRNBRunLoopModeExit; 1455 } 1456 else if (str[0] == '/') 1457 { 1458 if (remote->Comm().OpenFile (str)) 1459 mode = eRNBRunLoopModeExit; 1460 } 1461 1462 if (mode != eRNBRunLoopModeExit) 1463 { 1464 RNBLogSTDOUT ("Got a connection, waiting for process information for launching or attaching.\n"); 1465 1466 mode = RNBRunLoopGetStartModeFromRemote (remote); 1467 } 1468 break; 1469 1470 case eRNBRunLoopModeInferiorAttaching: 1471 if (!waitfor_pid_name.empty()) 1472 { 1473 // Set our end wait time if we are using a waitfor-duration 1474 // option that may have been specified 1475 struct timespec attach_timeout_abstime, *timeout_ptr = NULL; 1476 if (waitfor_duration != 0) 1477 { 1478 DNBTimer::OffsetTimeOfDay(&attach_timeout_abstime, waitfor_duration, 0); 1479 timeout_ptr = &attach_timeout_abstime; 1480 } 1481 nub_launch_flavor_t launch_flavor = g_launch_flavor; 1482 if (launch_flavor == eLaunchFlavorDefault) 1483 { 1484 // Our default launch method is posix spawn 1485 launch_flavor = eLaunchFlavorPosixSpawn; 1486 1487 #if defined WITH_BKS 1488 // Check if we have an app bundle, if so launch using SpringBoard. 1489 if (waitfor_pid_name.find (".app") != std::string::npos) 1490 { 1491 launch_flavor = eLaunchFlavorBKS; 1492 } 1493 #elif defined WITH_SPRINGBOARD 1494 // Check if we have an app bundle, if so launch using SpringBoard. 1495 if (waitfor_pid_name.find (".app") != std::string::npos) 1496 { 1497 launch_flavor = eLaunchFlavorSpringBoard; 1498 } 1499 #endif 1500 } 1501 1502 ctx.SetLaunchFlavor(launch_flavor); 1503 bool ignore_existing = false; 1504 RNBLogSTDOUT ("Waiting to attach to process %s...\n", waitfor_pid_name.c_str()); 1505 nub_process_t pid = DNBProcessAttachWait (waitfor_pid_name.c_str(), launch_flavor, ignore_existing, timeout_ptr, waitfor_interval, err_str, sizeof(err_str)); 1506 g_pid = pid; 1507 1508 if (pid == INVALID_NUB_PROCESS) 1509 { 1510 ctx.LaunchStatus().SetError(-1, DNBError::Generic); 1511 if (err_str[0]) 1512 ctx.LaunchStatus().SetErrorString(err_str); 1513 RNBLogSTDERR ("error: failed to attach to process named: \"%s\" %s\n", waitfor_pid_name.c_str(), err_str); 1514 mode = eRNBRunLoopModeExit; 1515 } 1516 else 1517 { 1518 ctx.SetProcessID(pid); 1519 mode = eRNBRunLoopModeInferiorExecuting; 1520 } 1521 } 1522 else if (attach_pid != INVALID_NUB_PROCESS) 1523 { 1524 1525 RNBLogSTDOUT ("Attaching to process %i...\n", attach_pid); 1526 nub_process_t attached_pid; 1527 mode = RNBRunLoopLaunchAttaching (remote, attach_pid, attached_pid); 1528 if (mode != eRNBRunLoopModeInferiorExecuting) 1529 { 1530 const char *error_str = remote->Context().LaunchStatus().AsString(); 1531 RNBLogSTDERR ("error: failed to attach process %i: %s\n", attach_pid, error_str ? error_str : "unknown error."); 1532 mode = eRNBRunLoopModeExit; 1533 } 1534 } 1535 else if (!attach_pid_name.empty ()) 1536 { 1537 struct timespec attach_timeout_abstime, *timeout_ptr = NULL; 1538 if (waitfor_duration != 0) 1539 { 1540 DNBTimer::OffsetTimeOfDay(&attach_timeout_abstime, waitfor_duration, 0); 1541 timeout_ptr = &attach_timeout_abstime; 1542 } 1543 1544 RNBLogSTDOUT ("Attaching to process %s...\n", attach_pid_name.c_str()); 1545 nub_process_t pid = DNBProcessAttachByName (attach_pid_name.c_str(), timeout_ptr, err_str, sizeof(err_str)); 1546 g_pid = pid; 1547 if (pid == INVALID_NUB_PROCESS) 1548 { 1549 ctx.LaunchStatus().SetError(-1, DNBError::Generic); 1550 if (err_str[0]) 1551 ctx.LaunchStatus().SetErrorString(err_str); 1552 RNBLogSTDERR ("error: failed to attach to process named: \"%s\" %s\n", waitfor_pid_name.c_str(), err_str); 1553 mode = eRNBRunLoopModeExit; 1554 } 1555 else 1556 { 1557 ctx.SetProcessID(pid); 1558 mode = eRNBRunLoopModeInferiorExecuting; 1559 } 1560 1561 } 1562 else 1563 { 1564 RNBLogSTDERR ("error: asked to attach with empty name and invalid PID.\n"); 1565 mode = eRNBRunLoopModeExit; 1566 } 1567 1568 if (mode != eRNBRunLoopModeExit) 1569 { 1570 if (port != INT32_MAX) 1571 { 1572 if (!ConnectRemote (remote, host.c_str(), port, reverse_connect, named_pipe_path.c_str(), unix_socket_name.c_str())) 1573 mode = eRNBRunLoopModeExit; 1574 } 1575 else if (str[0] == '/') 1576 { 1577 if (remote->Comm().OpenFile (str)) 1578 mode = eRNBRunLoopModeExit; 1579 } 1580 if (mode != eRNBRunLoopModeExit) 1581 RNBLogSTDOUT ("Waiting for debugger instructions for process %d.\n", attach_pid); 1582 } 1583 break; 1584 1585 case eRNBRunLoopModeInferiorLaunching: 1586 { 1587 mode = RNBRunLoopLaunchInferior (remote, 1588 ctx.GetSTDINPath(), 1589 ctx.GetSTDOUTPath(), 1590 ctx.GetSTDERRPath(), 1591 no_stdio); 1592 1593 if (mode == eRNBRunLoopModeInferiorExecuting) 1594 { 1595 if (port != INT32_MAX) 1596 { 1597 if (!ConnectRemote (remote, host.c_str(), port, reverse_connect, named_pipe_path.c_str(), unix_socket_name.c_str())) 1598 mode = eRNBRunLoopModeExit; 1599 } 1600 else if (str[0] == '/') 1601 { 1602 if (remote->Comm().OpenFile (str)) 1603 mode = eRNBRunLoopModeExit; 1604 } 1605 1606 if (mode != eRNBRunLoopModeExit) 1607 { 1608 const char *proc_name = "<unknown>"; 1609 if (ctx.ArgumentCount() > 0) 1610 proc_name = ctx.ArgumentAtIndex(0); 1611 RNBLogSTDOUT ("Got a connection, launched process %s (pid = %d).\n", proc_name, ctx.ProcessID()); 1612 } 1613 } 1614 else 1615 { 1616 const char *error_str = remote->Context().LaunchStatus().AsString(); 1617 RNBLogSTDERR ("error: failed to launch process %s: %s\n", argv_sub_zero, error_str ? error_str : "unknown error."); 1618 } 1619 } 1620 break; 1621 1622 case eRNBRunLoopModeInferiorExecuting: 1623 mode = RNBRunLoopInferiorExecuting(remote); 1624 break; 1625 1626 case eRNBRunLoopModePlatformMode: 1627 if (port != INT32_MAX) 1628 { 1629 if (!ConnectRemote (remote, host.c_str(), port, reverse_connect, named_pipe_path.c_str(), unix_socket_name.c_str())) 1630 mode = eRNBRunLoopModeExit; 1631 } 1632 else if (str[0] == '/') 1633 { 1634 if (remote->Comm().OpenFile (str)) 1635 mode = eRNBRunLoopModeExit; 1636 } 1637 1638 if (mode != eRNBRunLoopModeExit) 1639 mode = RNBRunLoopPlatform (remote); 1640 break; 1641 1642 default: 1643 mode = eRNBRunLoopModeExit; 1644 case eRNBRunLoopModeExit: 1645 break; 1646 } 1647 } 1648 1649 remote->StopReadRemoteDataThread (); 1650 remote->Context().SetProcessID(INVALID_NUB_PROCESS); 1651 RNBLogSTDOUT ("Exiting.\n"); 1652 1653 return 0; 1654 } 1655