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 PortWasBoundCallbackUnixSocket (const void *baton, in_port_t port) 635 { 636 //::printf ("PortWasBoundCallbackUnixSocket (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 void 688 PortWasBoundCallbackNamedPipe (const void *baton, uint16_t port) 689 { 690 const char *named_pipe = (const char *)baton; 691 if (named_pipe && named_pipe[0]) 692 { 693 int fd = ::open(named_pipe, O_WRONLY); 694 if (fd > -1) 695 { 696 char port_str[64]; 697 const ssize_t port_str_len = ::snprintf (port_str, sizeof(port_str), "%u", port); 698 // Write the port number as a C string with the NULL terminator 699 ::write (fd, port_str, port_str_len + 1); 700 close (fd); 701 } 702 } 703 } 704 705 static int 706 ConnectRemote (RNBRemote *remote, 707 const char *host, 708 int port, 709 bool reverse_connect, 710 const char *named_pipe_path, 711 const char *unix_socket_name) 712 { 713 if (!remote->Comm().IsConnected()) 714 { 715 if (reverse_connect) 716 { 717 if (port == 0) 718 { 719 DNBLogThreaded("error: invalid port supplied for reverse connection: %i.\n", port); 720 return 0; 721 } 722 if (remote->Comm().Connect(host, port) != rnb_success) 723 { 724 DNBLogThreaded("Failed to reverse connect to %s:%i.\n", host, port); 725 return 0; 726 } 727 } 728 else 729 { 730 if (port != 0) 731 RNBLogSTDOUT ("Listening to port %i for a connection from %s...\n", port, host ? host : "localhost"); 732 if (unix_socket_name && unix_socket_name[0]) 733 { 734 if (remote->Comm().Listen(host, port, PortWasBoundCallbackUnixSocket, unix_socket_name) != rnb_success) 735 { 736 RNBLogSTDERR ("Failed to get connection from a remote gdb process.\n"); 737 return 0; 738 } 739 } 740 else 741 { 742 if (remote->Comm().Listen(host, port, PortWasBoundCallbackNamedPipe, named_pipe_path) != rnb_success) 743 { 744 RNBLogSTDERR ("Failed to get connection from a remote gdb process.\n"); 745 return 0; 746 } 747 } 748 } 749 remote->StartReadRemoteDataThread(); 750 } 751 return 1; 752 } 753 754 //---------------------------------------------------------------------- 755 // ASL Logging callback that can be registered with DNBLogSetLogCallback 756 //---------------------------------------------------------------------- 757 void 758 ASLLogCallback(void *baton, uint32_t flags, const char *format, va_list args) 759 { 760 if (format == NULL) 761 return; 762 static aslmsg g_aslmsg = NULL; 763 if (g_aslmsg == NULL) 764 { 765 g_aslmsg = ::asl_new (ASL_TYPE_MSG); 766 char asl_key_sender[PATH_MAX]; 767 snprintf(asl_key_sender, sizeof(asl_key_sender), "com.apple.%s-%g", DEBUGSERVER_PROGRAM_NAME, DEBUGSERVER_VERSION_NUM); 768 ::asl_set (g_aslmsg, ASL_KEY_SENDER, asl_key_sender); 769 } 770 771 int asl_level; 772 if (flags & DNBLOG_FLAG_FATAL) asl_level = ASL_LEVEL_CRIT; 773 else if (flags & DNBLOG_FLAG_ERROR) asl_level = ASL_LEVEL_ERR; 774 else if (flags & DNBLOG_FLAG_WARNING) asl_level = ASL_LEVEL_WARNING; 775 else if (flags & DNBLOG_FLAG_VERBOSE) asl_level = ASL_LEVEL_WARNING; //ASL_LEVEL_INFO; 776 else asl_level = ASL_LEVEL_WARNING; //ASL_LEVEL_DEBUG; 777 778 ::asl_vlog (NULL, g_aslmsg, asl_level, format, args); 779 } 780 781 //---------------------------------------------------------------------- 782 // FILE based Logging callback that can be registered with 783 // DNBLogSetLogCallback 784 //---------------------------------------------------------------------- 785 void 786 FileLogCallback(void *baton, uint32_t flags, const char *format, va_list args) 787 { 788 if (baton == NULL || format == NULL) 789 return; 790 791 ::vfprintf ((FILE *)baton, format, args); 792 ::fprintf ((FILE *)baton, "\n"); 793 } 794 795 796 void 797 show_usage_and_exit (int exit_code) 798 { 799 RNBLogSTDERR ("Usage:\n %s host:port [program-name program-arg1 program-arg2 ...]\n", DEBUGSERVER_PROGRAM_NAME); 800 RNBLogSTDERR (" %s /path/file [program-name program-arg1 program-arg2 ...]\n", DEBUGSERVER_PROGRAM_NAME); 801 RNBLogSTDERR (" %s host:port --attach=<pid>\n", DEBUGSERVER_PROGRAM_NAME); 802 RNBLogSTDERR (" %s /path/file --attach=<pid>\n", DEBUGSERVER_PROGRAM_NAME); 803 RNBLogSTDERR (" %s host:port --attach=<process_name>\n", DEBUGSERVER_PROGRAM_NAME); 804 RNBLogSTDERR (" %s /path/file --attach=<process_name>\n", DEBUGSERVER_PROGRAM_NAME); 805 exit (exit_code); 806 } 807 808 809 //---------------------------------------------------------------------- 810 // option descriptors for getopt_long_only() 811 //---------------------------------------------------------------------- 812 static struct option g_long_options[] = 813 { 814 { "attach", required_argument, NULL, 'a' }, 815 { "arch", required_argument, NULL, 'A' }, 816 { "debug", no_argument, NULL, 'g' }, 817 { "verbose", no_argument, NULL, 'v' }, 818 { "lockdown", no_argument, &g_lockdown_opt, 1 }, // short option "-k" 819 { "applist", no_argument, &g_applist_opt, 1 }, // short option "-t" 820 { "log-file", required_argument, NULL, 'l' }, 821 { "log-flags", required_argument, NULL, 'f' }, 822 { "launch", required_argument, NULL, 'x' }, // Valid values are "auto", "posix-spawn", "fork-exec", "springboard" (arm only) 823 { "waitfor", required_argument, NULL, 'w' }, // Wait for a process whose name starts with ARG 824 { "waitfor-interval", required_argument, NULL, 'i' }, // Time in usecs to wait between sampling the pid list when waiting for a process by name 825 { "waitfor-duration", required_argument, NULL, 'd' }, // The time in seconds to wait for a process to show up by name 826 { "native-regs", no_argument, NULL, 'r' }, // Specify to use the native registers instead of the gdb defaults for the architecture. 827 { "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) 828 { "stdin-path", required_argument, NULL, 'I' }, // Set the STDIN path to be used when launching applications (only if debugserver launches the process) 829 { "stdout-path", required_argument, NULL, 'O' }, // Set the STDOUT path to be used when launching applications (only if debugserver launches the process) 830 { "stderr-path", required_argument, NULL, 'E' }, // Set the STDERR path to be used when launching applications (only if debugserver launches the process) 831 { "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) 832 { "setsid", no_argument, NULL, 'S' }, // call setsid() to make debugserver run in its own session 833 { "disable-aslr", no_argument, NULL, 'D' }, // Use _POSIX_SPAWN_DISABLE_ASLR to avoid shared library randomization 834 { "working-dir", required_argument, NULL, 'W' }, // The working directory that the inferior process should have (only if debugserver launches the process) 835 { "platform", required_argument, NULL, 'p' }, // Put this executable into a remote platform mode 836 { "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 837 { "named-pipe", required_argument, NULL, 'P' }, 838 { "reverse-connect", no_argument, NULL, 'R' }, 839 { NULL, 0, NULL, 0 } 840 }; 841 842 843 //---------------------------------------------------------------------- 844 // main 845 //---------------------------------------------------------------------- 846 int 847 main (int argc, char *argv[]) 848 { 849 const char *argv_sub_zero = argv[0]; // save a copy of argv[0] for error reporting post-launch 850 851 g_isatty = ::isatty (STDIN_FILENO); 852 853 // ::printf ("uid=%u euid=%u gid=%u egid=%u\n", 854 // getuid(), 855 // geteuid(), 856 // getgid(), 857 // getegid()); 858 859 860 // signal (SIGINT, signal_handler); 861 signal (SIGPIPE, signal_handler); 862 signal (SIGHUP, signal_handler); 863 864 g_remoteSP.reset (new RNBRemote ()); 865 866 867 RNBRemote *remote = g_remoteSP.get(); 868 if (remote == NULL) 869 { 870 RNBLogSTDERR ("error: failed to create a remote connection class\n"); 871 return -1; 872 } 873 874 RNBContext& ctx = remote->Context(); 875 876 int i; 877 int attach_pid = INVALID_NUB_PROCESS; 878 879 FILE* log_file = NULL; 880 uint32_t log_flags = 0; 881 // Parse our options 882 int ch; 883 int long_option_index = 0; 884 int debug = 0; 885 std::string compile_options; 886 std::string waitfor_pid_name; // Wait for a process that starts with this name 887 std::string attach_pid_name; 888 std::string arch_name; 889 std::string working_dir; // The new working directory to use for the inferior 890 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 891 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 892 useconds_t waitfor_interval = 1000; // Time in usecs between process lists polls when waiting for a process by name, default 1 msec. 893 useconds_t waitfor_duration = 0; // Time in seconds to wait for a process by name, 0 means wait forever. 894 bool no_stdio = false; 895 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 896 897 #if !defined (DNBLOG_ENABLED) 898 compile_options += "(no-logging) "; 899 #endif 900 901 RNBRunLoopMode start_mode = eRNBRunLoopModeExit; 902 903 char short_options[512]; 904 uint32_t short_options_idx = 0; 905 906 // Handle the two case that don't have short options in g_long_options 907 short_options[short_options_idx++] = 'k'; 908 short_options[short_options_idx++] = 't'; 909 910 for (i=0; g_long_options[i].name != NULL; ++i) 911 { 912 if (isalpha(g_long_options[i].val)) 913 { 914 short_options[short_options_idx++] = g_long_options[i].val; 915 switch (g_long_options[i].has_arg) 916 { 917 default: 918 case no_argument: 919 break; 920 921 case optional_argument: 922 short_options[short_options_idx++] = ':'; 923 // Fall through to required_argument case below... 924 case required_argument: 925 short_options[short_options_idx++] = ':'; 926 break; 927 } 928 } 929 } 930 // NULL terminate the short option string. 931 short_options[short_options_idx++] = '\0'; 932 933 #if __GLIBC__ 934 optind = 0; 935 #else 936 optreset = 1; 937 optind = 1; 938 #endif 939 940 while ((ch = getopt_long_only(argc, argv, short_options, g_long_options, &long_option_index)) != -1) 941 { 942 DNBLogDebug("option: ch == %c (0x%2.2x) --%s%c%s\n", 943 ch, (uint8_t)ch, 944 g_long_options[long_option_index].name, 945 g_long_options[long_option_index].has_arg ? '=' : ' ', 946 optarg ? optarg : ""); 947 switch (ch) 948 { 949 case 0: // Any optional that auto set themselves will return 0 950 break; 951 952 case 'A': 953 if (optarg && optarg[0]) 954 arch_name.assign(optarg); 955 break; 956 957 case 'a': 958 if (optarg && optarg[0]) 959 { 960 if (isdigit(optarg[0])) 961 { 962 char *end = NULL; 963 attach_pid = strtoul(optarg, &end, 0); 964 if (end == NULL || *end != '\0') 965 { 966 RNBLogSTDERR ("error: invalid pid option '%s'\n", optarg); 967 exit (4); 968 } 969 } 970 else 971 { 972 attach_pid_name = optarg; 973 } 974 start_mode = eRNBRunLoopModeInferiorAttaching; 975 } 976 break; 977 978 // --waitfor=NAME 979 case 'w': 980 if (optarg && optarg[0]) 981 { 982 waitfor_pid_name = optarg; 983 start_mode = eRNBRunLoopModeInferiorAttaching; 984 } 985 break; 986 987 // --waitfor-interval=USEC 988 case 'i': 989 if (optarg && optarg[0]) 990 { 991 char *end = NULL; 992 waitfor_interval = strtoul(optarg, &end, 0); 993 if (end == NULL || *end != '\0') 994 { 995 RNBLogSTDERR ("error: invalid waitfor-interval option value '%s'.\n", optarg); 996 exit (6); 997 } 998 } 999 break; 1000 1001 // --waitfor-duration=SEC 1002 case 'd': 1003 if (optarg && optarg[0]) 1004 { 1005 char *end = NULL; 1006 waitfor_duration = strtoul(optarg, &end, 0); 1007 if (end == NULL || *end != '\0') 1008 { 1009 RNBLogSTDERR ("error: invalid waitfor-duration option value '%s'.\n", optarg); 1010 exit (7); 1011 } 1012 } 1013 break; 1014 1015 case 'W': 1016 if (optarg && optarg[0]) 1017 working_dir.assign(optarg); 1018 break; 1019 1020 case 'x': 1021 if (optarg && optarg[0]) 1022 { 1023 if (strcasecmp(optarg, "auto") == 0) 1024 g_launch_flavor = eLaunchFlavorDefault; 1025 else if (strcasestr(optarg, "posix") == optarg) 1026 g_launch_flavor = eLaunchFlavorPosixSpawn; 1027 else if (strcasestr(optarg, "fork") == optarg) 1028 g_launch_flavor = eLaunchFlavorForkExec; 1029 #ifdef WITH_SPRINGBOARD 1030 else if (strcasestr(optarg, "spring") == optarg) 1031 g_launch_flavor = eLaunchFlavorSpringBoard; 1032 #endif 1033 else 1034 { 1035 RNBLogSTDERR ("error: invalid TYPE for the --launch=TYPE (-x TYPE) option: '%s'\n", optarg); 1036 RNBLogSTDERR ("Valid values TYPE are:\n"); 1037 RNBLogSTDERR (" auto Auto-detect the best launch method to use.\n"); 1038 RNBLogSTDERR (" posix Launch the executable using posix_spawn.\n"); 1039 RNBLogSTDERR (" fork Launch the executable using fork and exec.\n"); 1040 #ifdef WITH_SPRINGBOARD 1041 RNBLogSTDERR (" spring Launch the executable through Springboard.\n"); 1042 #endif 1043 exit (5); 1044 } 1045 } 1046 break; 1047 1048 case 'l': // Set Log File 1049 if (optarg && optarg[0]) 1050 { 1051 if (strcasecmp(optarg, "stdout") == 0) 1052 log_file = stdout; 1053 else if (strcasecmp(optarg, "stderr") == 0) 1054 log_file = stderr; 1055 else 1056 { 1057 log_file = fopen(optarg, "w"); 1058 if (log_file != NULL) 1059 setlinebuf(log_file); 1060 } 1061 1062 if (log_file == NULL) 1063 { 1064 const char *errno_str = strerror(errno); 1065 RNBLogSTDERR ("Failed to open log file '%s' for writing: errno = %i (%s)", optarg, errno, errno_str ? errno_str : "unknown error"); 1066 } 1067 } 1068 break; 1069 1070 case 'f': // Log Flags 1071 if (optarg && optarg[0]) 1072 log_flags = strtoul(optarg, NULL, 0); 1073 break; 1074 1075 case 'g': 1076 debug = 1; 1077 DNBLogSetDebug(debug); 1078 break; 1079 1080 case 't': 1081 g_applist_opt = 1; 1082 break; 1083 1084 case 'k': 1085 g_lockdown_opt = 1; 1086 break; 1087 1088 case 'r': 1089 // Do nothing, native regs is the default these days 1090 break; 1091 1092 case 'R': 1093 reverse_connect = true; 1094 break; 1095 case 'v': 1096 DNBLogSetVerbose(1); 1097 break; 1098 1099 case 's': 1100 ctx.GetSTDIN().assign(optarg); 1101 ctx.GetSTDOUT().assign(optarg); 1102 ctx.GetSTDERR().assign(optarg); 1103 break; 1104 1105 case 'I': 1106 ctx.GetSTDIN().assign(optarg); 1107 break; 1108 1109 case 'O': 1110 ctx.GetSTDOUT().assign(optarg); 1111 break; 1112 1113 case 'E': 1114 ctx.GetSTDERR().assign(optarg); 1115 break; 1116 1117 case 'n': 1118 no_stdio = true; 1119 break; 1120 1121 case 'S': 1122 // Put debugserver into a new session. Terminals group processes 1123 // into sessions and when a special terminal key sequences 1124 // (like control+c) are typed they can cause signals to go out to 1125 // all processes in a session. Using this --setsid (-S) option 1126 // will cause debugserver to run in its own sessions and be free 1127 // from such issues. 1128 // 1129 // This is useful when debugserver is spawned from a command 1130 // line application that uses debugserver to do the debugging, 1131 // yet that application doesn't want debugserver receiving the 1132 // signals sent to the session (i.e. dying when anyone hits ^C). 1133 setsid(); 1134 break; 1135 case 'D': 1136 g_disable_aslr = 1; 1137 break; 1138 1139 case 'p': 1140 start_mode = eRNBRunLoopModePlatformMode; 1141 break; 1142 1143 case 'u': 1144 unix_socket_name.assign (optarg); 1145 break; 1146 1147 case 'P': 1148 named_pipe_path.assign (optarg); 1149 break; 1150 1151 } 1152 } 1153 1154 if (arch_name.empty()) 1155 { 1156 #if defined (__arm__) 1157 arch_name.assign ("arm"); 1158 #endif 1159 } 1160 else 1161 { 1162 DNBSetArchitecture (arch_name.c_str()); 1163 } 1164 1165 // if (arch_name.empty()) 1166 // { 1167 // fprintf(stderr, "error: no architecture was specified\n"); 1168 // exit (8); 1169 // } 1170 // Skip any options we consumed with getopt_long_only 1171 argc -= optind; 1172 argv += optind; 1173 1174 1175 if (!working_dir.empty()) 1176 { 1177 if (remote->Context().SetWorkingDirectory (working_dir.c_str()) == false) 1178 { 1179 RNBLogSTDERR ("error: working directory doesn't exist '%s'.\n", working_dir.c_str()); 1180 exit (8); 1181 } 1182 } 1183 1184 remote->Initialize(); 1185 1186 // It is ok for us to set NULL as the logfile (this will disable any logging) 1187 1188 if (log_file != NULL) 1189 { 1190 DNBLogSetLogCallback(FileLogCallback, log_file); 1191 // If our log file was set, yet we have no log flags, log everything! 1192 if (log_flags == 0) 1193 log_flags = LOG_ALL | LOG_RNB_ALL; 1194 1195 DNBLogSetLogMask (log_flags); 1196 } 1197 else 1198 { 1199 // Enable DNB logging 1200 DNBLogSetLogCallback(ASLLogCallback, NULL); 1201 DNBLogSetLogMask (log_flags); 1202 1203 } 1204 1205 if (DNBLogEnabled()) 1206 { 1207 for (i=0; i<argc; i++) 1208 DNBLogDebug("argv[%i] = %s", i, argv[i]); 1209 } 1210 1211 // as long as we're dropping remotenub in as a replacement for gdbserver, 1212 // explicitly note that this is not gdbserver. 1213 1214 RNBLogSTDOUT ("%s-%g %sfor %s.\n", 1215 DEBUGSERVER_PROGRAM_NAME, 1216 DEBUGSERVER_VERSION_NUM, 1217 compile_options.c_str(), 1218 RNB_ARCH); 1219 1220 std::string host; 1221 int port = INT32_MAX; 1222 char str[PATH_MAX]; 1223 str[0] = '\0'; 1224 1225 if (g_lockdown_opt == 0 && g_applist_opt == 0) 1226 { 1227 // Make sure we at least have port 1228 if (argc < 1) 1229 { 1230 show_usage_and_exit (1); 1231 } 1232 // accept 'localhost:' prefix on port number 1233 1234 int items_scanned = ::sscanf (argv[0], "%[^:]:%i", str, &port); 1235 if (items_scanned == 2) 1236 { 1237 host = str; 1238 DNBLogDebug("host = '%s' port = %i", host.c_str(), port); 1239 } 1240 else 1241 { 1242 // No hostname means "localhost" 1243 int items_scanned = ::sscanf (argv[0], "%i", &port); 1244 if (items_scanned == 1) 1245 { 1246 host = "localhost"; 1247 DNBLogDebug("host = '%s' port = %i", host.c_str(), port); 1248 } 1249 else if (argv[0][0] == '/') 1250 { 1251 port = INT32_MAX; 1252 strncpy(str, argv[0], sizeof(str)); 1253 } 1254 else 1255 { 1256 show_usage_and_exit (2); 1257 } 1258 } 1259 1260 // We just used the 'host:port' or the '/path/file' arg... 1261 argc--; 1262 argv++; 1263 1264 } 1265 1266 // If we know we're waiting to attach, we don't need any of this other info. 1267 if (start_mode != eRNBRunLoopModeInferiorAttaching && 1268 start_mode != eRNBRunLoopModePlatformMode) 1269 { 1270 if (argc == 0 || g_lockdown_opt) 1271 { 1272 if (g_lockdown_opt != 0) 1273 { 1274 // Work around for SIGPIPE crashes due to posix_spawn issue. 1275 // We have to close STDOUT and STDERR, else the first time we 1276 // try and do any, we get SIGPIPE and die as posix_spawn is 1277 // doing bad things with our file descriptors at the moment. 1278 int null = open("/dev/null", O_RDWR); 1279 dup2(null, STDOUT_FILENO); 1280 dup2(null, STDERR_FILENO); 1281 } 1282 else if (g_applist_opt != 0) 1283 { 1284 // List all applications we are able to see 1285 std::string applist_plist; 1286 int err = ListApplications(applist_plist, false, false); 1287 if (err == 0) 1288 { 1289 fputs (applist_plist.c_str(), stdout); 1290 } 1291 else 1292 { 1293 RNBLogSTDERR ("error: ListApplications returned error %i\n", err); 1294 } 1295 // Exit with appropriate error if we were asked to list the applications 1296 // with no other args were given (and we weren't trying to do this over 1297 // lockdown) 1298 return err; 1299 } 1300 1301 DNBLogDebug("Get args from remote protocol..."); 1302 start_mode = eRNBRunLoopModeGetStartModeFromRemoteProtocol; 1303 } 1304 else 1305 { 1306 start_mode = eRNBRunLoopModeInferiorLaunching; 1307 // Fill in the argv array in the context from the rest of our args. 1308 // Skip the name of this executable and the port number 1309 for (int i = 0; i < argc; i++) 1310 { 1311 DNBLogDebug("inferior_argv[%i] = '%s'", i, argv[i]); 1312 ctx.PushArgument (argv[i]); 1313 } 1314 } 1315 } 1316 1317 if (start_mode == eRNBRunLoopModeExit) 1318 return -1; 1319 1320 RNBRunLoopMode mode = start_mode; 1321 char err_str[1024] = {'\0'}; 1322 1323 while (mode != eRNBRunLoopModeExit) 1324 { 1325 switch (mode) 1326 { 1327 case eRNBRunLoopModeGetStartModeFromRemoteProtocol: 1328 #ifdef WITH_LOCKDOWN 1329 if (g_lockdown_opt) 1330 { 1331 if (!remote->Comm().IsConnected()) 1332 { 1333 if (remote->Comm().ConnectToService () != rnb_success) 1334 { 1335 RNBLogSTDERR ("Failed to get connection from a remote gdb process.\n"); 1336 mode = eRNBRunLoopModeExit; 1337 } 1338 else if (g_applist_opt != 0) 1339 { 1340 // List all applications we are able to see 1341 std::string applist_plist; 1342 if (ListApplications(applist_plist, false, false) == 0) 1343 { 1344 DNBLogDebug("Task list: %s", applist_plist.c_str()); 1345 1346 remote->Comm().Write(applist_plist.c_str(), applist_plist.size()); 1347 // Issue a read that will never yield any data until the other side 1348 // closes the socket so this process doesn't just exit and cause the 1349 // socket to close prematurely on the other end and cause data loss. 1350 std::string buf; 1351 remote->Comm().Read(buf); 1352 } 1353 remote->Comm().Disconnect(false); 1354 mode = eRNBRunLoopModeExit; 1355 break; 1356 } 1357 else 1358 { 1359 // Start watching for remote packets 1360 remote->StartReadRemoteDataThread(); 1361 } 1362 } 1363 } 1364 else 1365 #endif 1366 if (port != INT32_MAX) 1367 { 1368 if (!ConnectRemote (remote, host.c_str(), port, reverse_connect, named_pipe_path.c_str(), unix_socket_name.c_str())) 1369 mode = eRNBRunLoopModeExit; 1370 } 1371 else if (str[0] == '/') 1372 { 1373 if (remote->Comm().OpenFile (str)) 1374 mode = eRNBRunLoopModeExit; 1375 } 1376 1377 if (mode != eRNBRunLoopModeExit) 1378 { 1379 RNBLogSTDOUT ("Got a connection, waiting for process information for launching or attaching.\n"); 1380 1381 mode = RNBRunLoopGetStartModeFromRemote (remote); 1382 } 1383 break; 1384 1385 case eRNBRunLoopModeInferiorAttaching: 1386 if (!waitfor_pid_name.empty()) 1387 { 1388 // Set our end wait time if we are using a waitfor-duration 1389 // option that may have been specified 1390 struct timespec attach_timeout_abstime, *timeout_ptr = NULL; 1391 if (waitfor_duration != 0) 1392 { 1393 DNBTimer::OffsetTimeOfDay(&attach_timeout_abstime, waitfor_duration, 0); 1394 timeout_ptr = &attach_timeout_abstime; 1395 } 1396 nub_launch_flavor_t launch_flavor = g_launch_flavor; 1397 if (launch_flavor == eLaunchFlavorDefault) 1398 { 1399 // Our default launch method is posix spawn 1400 launch_flavor = eLaunchFlavorPosixSpawn; 1401 1402 #ifdef WITH_SPRINGBOARD 1403 // Check if we have an app bundle, if so launch using SpringBoard. 1404 if (waitfor_pid_name.find (".app") != std::string::npos) 1405 { 1406 launch_flavor = eLaunchFlavorSpringBoard; 1407 } 1408 #endif 1409 } 1410 1411 ctx.SetLaunchFlavor(launch_flavor); 1412 bool ignore_existing = false; 1413 RNBLogSTDOUT ("Waiting to attach to process %s...\n", waitfor_pid_name.c_str()); 1414 nub_process_t pid = DNBProcessAttachWait (waitfor_pid_name.c_str(), launch_flavor, ignore_existing, timeout_ptr, waitfor_interval, err_str, sizeof(err_str)); 1415 g_pid = pid; 1416 1417 if (pid == INVALID_NUB_PROCESS) 1418 { 1419 ctx.LaunchStatus().SetError(-1, DNBError::Generic); 1420 if (err_str[0]) 1421 ctx.LaunchStatus().SetErrorString(err_str); 1422 RNBLogSTDERR ("error: failed to attach to process named: \"%s\" %s\n", waitfor_pid_name.c_str(), err_str); 1423 mode = eRNBRunLoopModeExit; 1424 } 1425 else 1426 { 1427 ctx.SetProcessID(pid); 1428 mode = eRNBRunLoopModeInferiorExecuting; 1429 } 1430 } 1431 else if (attach_pid != INVALID_NUB_PROCESS) 1432 { 1433 1434 RNBLogSTDOUT ("Attaching to process %i...\n", attach_pid); 1435 nub_process_t attached_pid; 1436 mode = RNBRunLoopLaunchAttaching (remote, attach_pid, attached_pid); 1437 if (mode != eRNBRunLoopModeInferiorExecuting) 1438 { 1439 const char *error_str = remote->Context().LaunchStatus().AsString(); 1440 RNBLogSTDERR ("error: failed to attach process %i: %s\n", attach_pid, error_str ? error_str : "unknown error."); 1441 mode = eRNBRunLoopModeExit; 1442 } 1443 } 1444 else if (!attach_pid_name.empty ()) 1445 { 1446 struct timespec attach_timeout_abstime, *timeout_ptr = NULL; 1447 if (waitfor_duration != 0) 1448 { 1449 DNBTimer::OffsetTimeOfDay(&attach_timeout_abstime, waitfor_duration, 0); 1450 timeout_ptr = &attach_timeout_abstime; 1451 } 1452 1453 RNBLogSTDOUT ("Attaching to process %s...\n", attach_pid_name.c_str()); 1454 nub_process_t pid = DNBProcessAttachByName (attach_pid_name.c_str(), timeout_ptr, err_str, sizeof(err_str)); 1455 g_pid = pid; 1456 if (pid == INVALID_NUB_PROCESS) 1457 { 1458 ctx.LaunchStatus().SetError(-1, DNBError::Generic); 1459 if (err_str[0]) 1460 ctx.LaunchStatus().SetErrorString(err_str); 1461 RNBLogSTDERR ("error: failed to attach to process named: \"%s\" %s\n", waitfor_pid_name.c_str(), err_str); 1462 mode = eRNBRunLoopModeExit; 1463 } 1464 else 1465 { 1466 ctx.SetProcessID(pid); 1467 mode = eRNBRunLoopModeInferiorExecuting; 1468 } 1469 1470 } 1471 else 1472 { 1473 RNBLogSTDERR ("error: asked to attach with empty name and invalid PID.\n"); 1474 mode = eRNBRunLoopModeExit; 1475 } 1476 1477 if (mode != eRNBRunLoopModeExit) 1478 { 1479 if (port != INT32_MAX) 1480 { 1481 if (!ConnectRemote (remote, host.c_str(), port, reverse_connect, named_pipe_path.c_str(), unix_socket_name.c_str())) 1482 mode = eRNBRunLoopModeExit; 1483 } 1484 else if (str[0] == '/') 1485 { 1486 if (remote->Comm().OpenFile (str)) 1487 mode = eRNBRunLoopModeExit; 1488 } 1489 if (mode != eRNBRunLoopModeExit) 1490 RNBLogSTDOUT ("Waiting for debugger instructions for process %d.\n", attach_pid); 1491 } 1492 break; 1493 1494 case eRNBRunLoopModeInferiorLaunching: 1495 { 1496 mode = RNBRunLoopLaunchInferior (remote, 1497 ctx.GetSTDINPath(), 1498 ctx.GetSTDOUTPath(), 1499 ctx.GetSTDERRPath(), 1500 no_stdio); 1501 1502 if (mode == eRNBRunLoopModeInferiorExecuting) 1503 { 1504 if (port != INT32_MAX) 1505 { 1506 if (!ConnectRemote (remote, host.c_str(), port, reverse_connect, named_pipe_path.c_str(), unix_socket_name.c_str())) 1507 mode = eRNBRunLoopModeExit; 1508 } 1509 else if (str[0] == '/') 1510 { 1511 if (remote->Comm().OpenFile (str)) 1512 mode = eRNBRunLoopModeExit; 1513 } 1514 1515 if (mode != eRNBRunLoopModeExit) 1516 RNBLogSTDOUT ("Got a connection, launched process %s.\n", argv_sub_zero); 1517 } 1518 else 1519 { 1520 const char *error_str = remote->Context().LaunchStatus().AsString(); 1521 RNBLogSTDERR ("error: failed to launch process %s: %s\n", argv_sub_zero, error_str ? error_str : "unknown error."); 1522 } 1523 } 1524 break; 1525 1526 case eRNBRunLoopModeInferiorExecuting: 1527 mode = RNBRunLoopInferiorExecuting(remote); 1528 break; 1529 1530 case eRNBRunLoopModePlatformMode: 1531 if (port != INT32_MAX) 1532 { 1533 if (!ConnectRemote (remote, host.c_str(), port, reverse_connect, named_pipe_path.c_str(), unix_socket_name.c_str())) 1534 mode = eRNBRunLoopModeExit; 1535 } 1536 else if (str[0] == '/') 1537 { 1538 if (remote->Comm().OpenFile (str)) 1539 mode = eRNBRunLoopModeExit; 1540 } 1541 1542 if (mode != eRNBRunLoopModeExit) 1543 mode = RNBRunLoopPlatform (remote); 1544 break; 1545 1546 default: 1547 mode = eRNBRunLoopModeExit; 1548 case eRNBRunLoopModeExit: 1549 break; 1550 } 1551 } 1552 1553 remote->StopReadRemoteDataThread (); 1554 remote->Context().SetProcessID(INVALID_NUB_PROCESS); 1555 RNBLogSTDOUT ("Exiting.\n"); 1556 1557 return 0; 1558 } 1559