diff options
Diffstat (limited to 'gnu/llvm/lldb/tools/debugserver/source/debugserver.cpp')
| -rw-r--r-- | gnu/llvm/lldb/tools/debugserver/source/debugserver.cpp | 1678 |
1 files changed, 1678 insertions, 0 deletions
diff --git a/gnu/llvm/lldb/tools/debugserver/source/debugserver.cpp b/gnu/llvm/lldb/tools/debugserver/source/debugserver.cpp new file mode 100644 index 00000000000..42205dedf4b --- /dev/null +++ b/gnu/llvm/lldb/tools/debugserver/source/debugserver.cpp @@ -0,0 +1,1678 @@ +//===-- debugserver.cpp -----------------------------------------*- C++ -*-===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#include <arpa/inet.h> +#include <asl.h> +#include <crt_externs.h> +#include <errno.h> +#include <getopt.h> +#include <netdb.h> +#include <netinet/in.h> +#include <netinet/tcp.h> +#include <string> +#include <sys/select.h> +#include <sys/socket.h> +#include <sys/sysctl.h> +#include <sys/types.h> +#include <sys/un.h> + +#include <memory> +#include <vector> + +#if defined(__APPLE__) +#include <sched.h> +extern "C" int proc_set_wakemon_params(pid_t, int, + int); // <libproc_internal.h> SPI +#endif + +#include "CFString.h" +#include "DNB.h" +#include "DNBLog.h" +#include "DNBTimer.h" +#include "OsLogger.h" +#include "PseudoTerminal.h" +#include "RNBContext.h" +#include "RNBRemote.h" +#include "RNBServices.h" +#include "RNBSocket.h" +#include "SysSignal.h" + +// Global PID in case we get a signal and need to stop the process... +nub_process_t g_pid = INVALID_NUB_PROCESS; + +// Run loop modes which determine which run loop function will be called +enum RNBRunLoopMode { + eRNBRunLoopModeInvalid = 0, + eRNBRunLoopModeGetStartModeFromRemoteProtocol, + eRNBRunLoopModeInferiorAttaching, + eRNBRunLoopModeInferiorLaunching, + eRNBRunLoopModeInferiorExecuting, + eRNBRunLoopModePlatformMode, + eRNBRunLoopModeExit +}; + +// Global Variables +RNBRemoteSP g_remoteSP; +static int g_lockdown_opt = 0; +static int g_applist_opt = 0; +static nub_launch_flavor_t g_launch_flavor = eLaunchFlavorDefault; +int g_disable_aslr = 0; + +int g_isatty = 0; +bool g_detach_on_error = true; + +#define RNBLogSTDOUT(fmt, ...) \ + do { \ + if (g_isatty) { \ + fprintf(stdout, fmt, ##__VA_ARGS__); \ + } else { \ + _DNBLog(0, fmt, ##__VA_ARGS__); \ + } \ + } while (0) +#define RNBLogSTDERR(fmt, ...) \ + do { \ + if (g_isatty) { \ + fprintf(stderr, fmt, ##__VA_ARGS__); \ + } else { \ + _DNBLog(0, fmt, ##__VA_ARGS__); \ + } \ + } while (0) + +// Get our program path and arguments from the remote connection. +// We will need to start up the remote connection without a PID, get the +// arguments, wait for the new process to finish launching and hit its +// entry point, and then return the run loop mode that should come next. +RNBRunLoopMode RNBRunLoopGetStartModeFromRemote(RNBRemote *remote) { + std::string packet; + + if (remote) { + RNBContext &ctx = remote->Context(); + uint32_t event_mask = RNBContext::event_read_packet_available | + RNBContext::event_read_thread_exiting; + + // Spin waiting to get the A packet. + while (true) { + DNBLogThreadedIf(LOG_RNB_MAX, + "%s ctx.Events().WaitForSetEvents( 0x%08x ) ...", + __FUNCTION__, event_mask); + nub_event_t set_events = ctx.Events().WaitForSetEvents(event_mask); + DNBLogThreadedIf(LOG_RNB_MAX, + "%s ctx.Events().WaitForSetEvents( 0x%08x ) => 0x%08x", + __FUNCTION__, event_mask, set_events); + + if (set_events & RNBContext::event_read_thread_exiting) { + RNBLogSTDERR("error: packet read thread exited.\n"); + return eRNBRunLoopModeExit; + } + + if (set_events & RNBContext::event_read_packet_available) { + rnb_err_t err = rnb_err; + RNBRemote::PacketEnum type; + + err = remote->HandleReceivedPacket(&type); + + // check if we tried to attach to a process + if (type == RNBRemote::vattach || type == RNBRemote::vattachwait || + type == RNBRemote::vattachorwait) { + if (err == rnb_success) { + RNBLogSTDOUT("Attach succeeded, ready to debug.\n"); + return eRNBRunLoopModeInferiorExecuting; + } else { + RNBLogSTDERR("error: attach failed.\n"); + return eRNBRunLoopModeExit; + } + } + + if (err == rnb_success) { + // If we got our arguments we are ready to launch using the arguments + // and any environment variables we received. + if (type == RNBRemote::set_argv) { + return eRNBRunLoopModeInferiorLaunching; + } + } else if (err == rnb_not_connected) { + RNBLogSTDERR("error: connection lost.\n"); + return eRNBRunLoopModeExit; + } else { + // a catch all for any other gdb remote packets that failed + DNBLogThreadedIf(LOG_RNB_MINIMAL, "%s Error getting packet.", + __FUNCTION__); + continue; + } + + DNBLogThreadedIf(LOG_RNB_MINIMAL, "#### %s", __FUNCTION__); + } else { + DNBLogThreadedIf(LOG_RNB_MINIMAL, + "%s Connection closed before getting \"A\" packet.", + __FUNCTION__); + return eRNBRunLoopModeExit; + } + } + } + return eRNBRunLoopModeExit; +} + +// This run loop mode will wait for the process to launch and hit its +// entry point. It will currently ignore all events except for the +// process state changed event, where it watches for the process stopped +// or crash process state. +RNBRunLoopMode RNBRunLoopLaunchInferior(RNBRemote *remote, + const char *stdin_path, + const char *stdout_path, + const char *stderr_path, + bool no_stdio) { + RNBContext &ctx = remote->Context(); + + // The Process stuff takes a c array, the RNBContext has a vector... + // So make up a c array. + + DNBLogThreadedIf(LOG_RNB_MINIMAL, "%s Launching '%s'...", __FUNCTION__, + ctx.ArgumentAtIndex(0)); + + size_t inferior_argc = ctx.ArgumentCount(); + // Initialize inferior_argv with inferior_argc + 1 NULLs + std::vector<const char *> inferior_argv(inferior_argc + 1, NULL); + + size_t i; + for (i = 0; i < inferior_argc; i++) + inferior_argv[i] = ctx.ArgumentAtIndex(i); + + // Pass the environment array the same way: + + size_t inferior_envc = ctx.EnvironmentCount(); + // Initialize inferior_argv with inferior_argc + 1 NULLs + std::vector<const char *> inferior_envp(inferior_envc + 1, NULL); + + for (i = 0; i < inferior_envc; i++) + inferior_envp[i] = ctx.EnvironmentAtIndex(i); + + // Our launch type hasn't been set to anything concrete, so we need to + // figure our how we are going to launch automatically. + + nub_launch_flavor_t launch_flavor = g_launch_flavor; + if (launch_flavor == eLaunchFlavorDefault) { + // Our default launch method is posix spawn + launch_flavor = eLaunchFlavorPosixSpawn; + +#if defined WITH_FBS + // Check if we have an app bundle, if so launch using BackBoard Services. + if (strstr(inferior_argv[0], ".app")) { + launch_flavor = eLaunchFlavorFBS; + } +#elif defined WITH_BKS + // Check if we have an app bundle, if so launch using BackBoard Services. + if (strstr(inferior_argv[0], ".app")) { + launch_flavor = eLaunchFlavorBKS; + } +#elif defined WITH_SPRINGBOARD + // Check if we have an app bundle, if so launch using SpringBoard. + if (strstr(inferior_argv[0], ".app")) { + launch_flavor = eLaunchFlavorSpringBoard; + } +#endif + } + + ctx.SetLaunchFlavor(launch_flavor); + char resolved_path[PATH_MAX]; + + // If we fail to resolve the path to our executable, then just use what we + // were given and hope for the best + if (!DNBResolveExecutablePath(inferior_argv[0], resolved_path, + sizeof(resolved_path))) + ::strlcpy(resolved_path, inferior_argv[0], sizeof(resolved_path)); + + char launch_err_str[PATH_MAX]; + launch_err_str[0] = '\0'; + const char *cwd = + (ctx.GetWorkingDirPath() != NULL ? ctx.GetWorkingDirPath() + : ctx.GetWorkingDirectory()); + const char *process_event = ctx.GetProcessEvent(); + nub_process_t pid = DNBProcessLaunch( + resolved_path, &inferior_argv[0], &inferior_envp[0], cwd, stdin_path, + stdout_path, stderr_path, no_stdio, launch_flavor, g_disable_aslr, + process_event, launch_err_str, sizeof(launch_err_str)); + + g_pid = pid; + + if (pid == INVALID_NUB_PROCESS && strlen(launch_err_str) > 0) { + DNBLogThreaded("%s DNBProcessLaunch() returned error: '%s'", __FUNCTION__, + launch_err_str); + ctx.LaunchStatus().SetError(-1, DNBError::Generic); + ctx.LaunchStatus().SetErrorString(launch_err_str); + } else if (pid == INVALID_NUB_PROCESS) { + DNBLogThreaded( + "%s DNBProcessLaunch() failed to launch process, unknown failure", + __FUNCTION__); + ctx.LaunchStatus().SetError(-1, DNBError::Generic); + ctx.LaunchStatus().SetErrorString("<unknown failure>"); + } else { + ctx.LaunchStatus().Clear(); + } + + if (remote->Comm().IsConnected()) { + // It we are connected already, the next thing gdb will do is ask + // whether the launch succeeded, and if not, whether there is an + // error code. So we need to fetch one packet from gdb before we wait + // on the stop from the target. + + uint32_t event_mask = RNBContext::event_read_packet_available; + nub_event_t set_events = ctx.Events().WaitForSetEvents(event_mask); + + if (set_events & RNBContext::event_read_packet_available) { + rnb_err_t err = rnb_err; + RNBRemote::PacketEnum type; + + err = remote->HandleReceivedPacket(&type); + + if (err != rnb_success) { + DNBLogThreadedIf(LOG_RNB_MINIMAL, "%s Error getting packet.", + __FUNCTION__); + return eRNBRunLoopModeExit; + } + if (type != RNBRemote::query_launch_success) { + DNBLogThreadedIf(LOG_RNB_MINIMAL, + "%s Didn't get the expected qLaunchSuccess packet.", + __FUNCTION__); + } + } + } + + while (pid != INVALID_NUB_PROCESS) { + // Wait for process to start up and hit entry point + DNBLogThreadedIf(LOG_RNB_EVENTS, "%s DNBProcessWaitForEvent (%4.4x, " + "eEventProcessRunningStateChanged | " + "eEventProcessStoppedStateChanged, true, " + "INFINITE)...", + __FUNCTION__, pid); + nub_event_t set_events = + DNBProcessWaitForEvents(pid, eEventProcessRunningStateChanged | + eEventProcessStoppedStateChanged, + true, NULL); + DNBLogThreadedIf(LOG_RNB_EVENTS, "%s DNBProcessWaitForEvent (%4.4x, " + "eEventProcessRunningStateChanged | " + "eEventProcessStoppedStateChanged, true, " + "INFINITE) => 0x%8.8x", + __FUNCTION__, pid, set_events); + + if (set_events == 0) { + pid = INVALID_NUB_PROCESS; + g_pid = pid; + } else { + if (set_events & (eEventProcessRunningStateChanged | + eEventProcessStoppedStateChanged)) { + nub_state_t pid_state = DNBProcessGetState(pid); + DNBLogThreadedIf( + LOG_RNB_EVENTS, + "%s process %4.4x state changed (eEventProcessStateChanged): %s", + __FUNCTION__, pid, DNBStateAsString(pid_state)); + + switch (pid_state) { + case eStateInvalid: + case eStateUnloaded: + case eStateAttaching: + case eStateLaunching: + case eStateSuspended: + break; // Ignore + + case eStateRunning: + case eStateStepping: + // Still waiting to stop at entry point... + break; + + case eStateStopped: + case eStateCrashed: + ctx.SetProcessID(pid); + return eRNBRunLoopModeInferiorExecuting; + + case eStateDetached: + case eStateExited: + pid = INVALID_NUB_PROCESS; + g_pid = pid; + return eRNBRunLoopModeExit; + } + } + + DNBProcessResetEvents(pid, set_events); + } + } + + return eRNBRunLoopModeExit; +} + +// This run loop mode will wait for the process to launch and hit its +// entry point. It will currently ignore all events except for the +// process state changed event, where it watches for the process stopped +// or crash process state. +RNBRunLoopMode RNBRunLoopLaunchAttaching(RNBRemote *remote, + nub_process_t attach_pid, + nub_process_t &pid) { + RNBContext &ctx = remote->Context(); + + DNBLogThreadedIf(LOG_RNB_MINIMAL, "%s Attaching to pid %i...", __FUNCTION__, + attach_pid); + char err_str[1024]; + pid = DNBProcessAttach(attach_pid, NULL, err_str, sizeof(err_str)); + g_pid = pid; + + if (pid == INVALID_NUB_PROCESS) { + ctx.LaunchStatus().SetError(-1, DNBError::Generic); + if (err_str[0]) + ctx.LaunchStatus().SetErrorString(err_str); + return eRNBRunLoopModeExit; + } else { + ctx.SetProcessID(pid); + return eRNBRunLoopModeInferiorExecuting; + } +} + +// Watch for signals: +// SIGINT: so we can halt our inferior. (disabled for now) +// SIGPIPE: in case our child process dies +int g_sigint_received = 0; +int g_sigpipe_received = 0; +void signal_handler(int signo) { + DNBLogThreadedIf(LOG_RNB_MINIMAL, "%s (%s)", __FUNCTION__, + SysSignal::Name(signo)); + + switch (signo) { + case SIGINT: + g_sigint_received++; + if (g_pid != INVALID_NUB_PROCESS) { + // Only send a SIGINT once... + if (g_sigint_received == 1) { + switch (DNBProcessGetState(g_pid)) { + case eStateRunning: + case eStateStepping: + DNBProcessSignal(g_pid, SIGSTOP); + return; + default: + break; + } + } + } + exit(SIGINT); + break; + + case SIGPIPE: + g_sigpipe_received = 1; + break; + } +} + +// Return the new run loop mode based off of the current process state +RNBRunLoopMode HandleProcessStateChange(RNBRemote *remote, bool initialize) { + RNBContext &ctx = remote->Context(); + nub_process_t pid = ctx.ProcessID(); + + if (pid == INVALID_NUB_PROCESS) { + DNBLogThreadedIf(LOG_RNB_MINIMAL, "#### %s error: pid invalid, exiting...", + __FUNCTION__); + return eRNBRunLoopModeExit; + } + nub_state_t pid_state = DNBProcessGetState(pid); + + DNBLogThreadedIf(LOG_RNB_MINIMAL, + "%s (&remote, initialize=%i) pid_state = %s", __FUNCTION__, + (int)initialize, DNBStateAsString(pid_state)); + + switch (pid_state) { + case eStateInvalid: + case eStateUnloaded: + // Something bad happened + return eRNBRunLoopModeExit; + break; + + case eStateAttaching: + case eStateLaunching: + return eRNBRunLoopModeInferiorExecuting; + + case eStateSuspended: + case eStateCrashed: + case eStateStopped: + // If we stop due to a signal, so clear the fact that we got a SIGINT + // so we can stop ourselves again (but only while our inferior + // process is running..) + g_sigint_received = 0; + if (initialize == false) { + // Compare the last stop count to our current notion of a stop count + // to make sure we don't notify more than once for a given stop. + nub_size_t prev_pid_stop_count = ctx.GetProcessStopCount(); + bool pid_stop_count_changed = + ctx.SetProcessStopCount(DNBProcessGetStopCount(pid)); + if (pid_stop_count_changed) { + remote->FlushSTDIO(); + + if (ctx.GetProcessStopCount() == 1) { + 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); + } else { + + 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); + remote->NotifyThatProcessStopped(); + } + } else { + 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); + } + } + return eRNBRunLoopModeInferiorExecuting; + + case eStateStepping: + case eStateRunning: + return eRNBRunLoopModeInferiorExecuting; + + case eStateExited: + remote->HandlePacket_last_signal(NULL); + return eRNBRunLoopModeExit; + case eStateDetached: + return eRNBRunLoopModeExit; + } + + // Catch all... + return eRNBRunLoopModeExit; +} + +// This function handles the case where our inferior program is stopped and +// we are waiting for gdb remote protocol packets. When a packet occurs that +// makes the inferior run, we need to leave this function with a new state +// as the return code. +RNBRunLoopMode RNBRunLoopInferiorExecuting(RNBRemote *remote) { + DNBLogThreadedIf(LOG_RNB_MINIMAL, "#### %s", __FUNCTION__); + RNBContext &ctx = remote->Context(); + + // Init our mode and set 'is_running' based on the current process state + RNBRunLoopMode mode = HandleProcessStateChange(remote, true); + + while (ctx.ProcessID() != INVALID_NUB_PROCESS) { + + std::string set_events_str; + uint32_t event_mask = ctx.NormalEventBits(); + + if (!ctx.ProcessStateRunning()) { + // Clear some bits if we are not running so we don't send any async + // packets + event_mask &= ~RNBContext::event_proc_stdio_available; + event_mask &= ~RNBContext::event_proc_profile_data; + // When we enable async structured data packets over another logical + // channel, + // this can be relaxed. + event_mask &= ~RNBContext::event_darwin_log_data_available; + } + + // We want to make sure we consume all process state changes and have + // whomever is notifying us to wait for us to reset the event bit before + // continuing. + // ctx.Events().SetResetAckMask (RNBContext::event_proc_state_changed); + + DNBLogThreadedIf(LOG_RNB_EVENTS, + "%s ctx.Events().WaitForSetEvents(0x%08x) ...", + __FUNCTION__, event_mask); + nub_event_t set_events = ctx.Events().WaitForSetEvents(event_mask); + 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)); + + if (set_events) { + if ((set_events & RNBContext::event_proc_thread_exiting) || + (set_events & RNBContext::event_proc_stdio_available)) { + remote->FlushSTDIO(); + } + + if (set_events & RNBContext::event_proc_profile_data) { + remote->SendAsyncProfileData(); + } + + if (set_events & RNBContext::event_darwin_log_data_available) { + remote->SendAsyncDarwinLogData(); + } + + if (set_events & RNBContext::event_read_packet_available) { + // handleReceivedPacket will take care of resetting the + // event_read_packet_available events when there are no more... + set_events ^= RNBContext::event_read_packet_available; + + if (ctx.ProcessStateRunning()) { + if (remote->HandleAsyncPacket() == rnb_not_connected) { + // TODO: connect again? Exit? + } + } else { + if (remote->HandleReceivedPacket() == rnb_not_connected) { + // TODO: connect again? Exit? + } + } + } + + if (set_events & RNBContext::event_proc_state_changed) { + mode = HandleProcessStateChange(remote, false); + ctx.Events().ResetEvents(RNBContext::event_proc_state_changed); + set_events ^= RNBContext::event_proc_state_changed; + } + + if (set_events & RNBContext::event_proc_thread_exiting) { + mode = eRNBRunLoopModeExit; + } + + if (set_events & RNBContext::event_read_thread_exiting) { + // Out remote packet receiving thread exited, exit for now. + if (ctx.HasValidProcessID()) { + // TODO: We should add code that will leave the current process + // in its current state and listen for another connection... + if (ctx.ProcessStateRunning()) { + if (ctx.GetDetachOnError()) { + DNBLog("debugserver's event read thread is exiting, detaching " + "from the inferior process."); + DNBProcessDetach(ctx.ProcessID()); + } else { + DNBLog("debugserver's event read thread is exiting, killing the " + "inferior process."); + DNBProcessKill(ctx.ProcessID()); + } + } else { + if (ctx.GetDetachOnError()) { + DNBLog("debugserver's event read thread is exiting, detaching " + "from the inferior process."); + DNBProcessDetach(ctx.ProcessID()); + } + } + } + mode = eRNBRunLoopModeExit; + } + } + + // Reset all event bits that weren't reset for now... + if (set_events != 0) + ctx.Events().ResetEvents(set_events); + + if (mode != eRNBRunLoopModeInferiorExecuting) + break; + } + + return mode; +} + +RNBRunLoopMode RNBRunLoopPlatform(RNBRemote *remote) { + RNBRunLoopMode mode = eRNBRunLoopModePlatformMode; + RNBContext &ctx = remote->Context(); + + while (mode == eRNBRunLoopModePlatformMode) { + std::string set_events_str; + const uint32_t event_mask = RNBContext::event_read_packet_available | + RNBContext::event_read_thread_exiting; + + DNBLogThreadedIf(LOG_RNB_EVENTS, + "%s ctx.Events().WaitForSetEvents(0x%08x) ...", + __FUNCTION__, event_mask); + nub_event_t set_events = ctx.Events().WaitForSetEvents(event_mask); + 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)); + + if (set_events) { + if (set_events & RNBContext::event_read_packet_available) { + if (remote->HandleReceivedPacket() == rnb_not_connected) + mode = eRNBRunLoopModeExit; + } + + if (set_events & RNBContext::event_read_thread_exiting) { + mode = eRNBRunLoopModeExit; + } + ctx.Events().ResetEvents(set_events); + } + } + return eRNBRunLoopModeExit; +} + +// Convenience function to set up the remote listening port +// Returns 1 for success 0 for failure. + +static void PortWasBoundCallbackUnixSocket(const void *baton, in_port_t port) { + //::printf ("PortWasBoundCallbackUnixSocket (baton = %p, port = %u)\n", baton, + //port); + + const char *unix_socket_name = (const char *)baton; + + if (unix_socket_name && unix_socket_name[0]) { + // We were given a unix socket name to use to communicate the port + // that we ended up binding to back to our parent process + struct sockaddr_un saddr_un; + int s = ::socket(AF_UNIX, SOCK_STREAM, 0); + if (s < 0) { + perror("error: socket (AF_UNIX, SOCK_STREAM, 0)"); + exit(1); + } + + saddr_un.sun_family = AF_UNIX; + ::strlcpy(saddr_un.sun_path, unix_socket_name, + sizeof(saddr_un.sun_path) - 1); + saddr_un.sun_path[sizeof(saddr_un.sun_path) - 1] = '\0'; + saddr_un.sun_len = SUN_LEN(&saddr_un); + + if (::connect(s, (struct sockaddr *)&saddr_un, + static_cast<socklen_t>(SUN_LEN(&saddr_un))) < 0) { + perror("error: connect (socket, &saddr_un, saddr_un_len)"); + exit(1); + } + + //::printf ("connect () sucess!!\n"); + + // We were able to connect to the socket, now write our PID so whomever + // launched us will know this process's ID + RNBLogSTDOUT("Listening to port %i...\n", port); + + char pid_str[64]; + const int pid_str_len = ::snprintf(pid_str, sizeof(pid_str), "%u", port); + const ssize_t bytes_sent = ::send(s, pid_str, pid_str_len, 0); + + if (pid_str_len != bytes_sent) { + perror("error: send (s, pid_str, pid_str_len, 0)"); + exit(1); + } + + //::printf ("send () sucess!!\n"); + + // We are done with the socket + close(s); + } +} + +static void PortWasBoundCallbackNamedPipe(const void *baton, uint16_t port) { + const char *named_pipe = (const char *)baton; + if (named_pipe && named_pipe[0]) { + int fd = ::open(named_pipe, O_WRONLY); + if (fd > -1) { + char port_str[64]; + const ssize_t port_str_len = + ::snprintf(port_str, sizeof(port_str), "%u", port); + // Write the port number as a C string with the NULL terminator + ::write(fd, port_str, port_str_len + 1); + close(fd); + } + } +} + +static int ConnectRemote(RNBRemote *remote, const char *host, int port, + bool reverse_connect, const char *named_pipe_path, + const char *unix_socket_name) { + if (!remote->Comm().IsConnected()) { + if (reverse_connect) { + if (port == 0) { + DNBLogThreaded( + "error: invalid port supplied for reverse connection: %i.\n", port); + return 0; + } + if (remote->Comm().Connect(host, port) != rnb_success) { + DNBLogThreaded("Failed to reverse connect to %s:%i.\n", host, port); + return 0; + } + } else { + if (port != 0) + RNBLogSTDOUT("Listening to port %i for a connection from %s...\n", port, + host ? host : "127.0.0.1"); + if (unix_socket_name && unix_socket_name[0]) { + if (remote->Comm().Listen(host, port, PortWasBoundCallbackUnixSocket, + unix_socket_name) != rnb_success) { + RNBLogSTDERR("Failed to get connection from a remote gdb process.\n"); + return 0; + } + } else { + if (remote->Comm().Listen(host, port, PortWasBoundCallbackNamedPipe, + named_pipe_path) != rnb_success) { + RNBLogSTDERR("Failed to get connection from a remote gdb process.\n"); + return 0; + } + } + } + remote->StartReadRemoteDataThread(); + } + return 1; +} + +// ASL Logging callback that can be registered with DNBLogSetLogCallback +void ASLLogCallback(void *baton, uint32_t flags, const char *format, + va_list args) { + if (format == NULL) + return; + static aslmsg g_aslmsg = NULL; + if (g_aslmsg == NULL) { + g_aslmsg = ::asl_new(ASL_TYPE_MSG); + char asl_key_sender[PATH_MAX]; + snprintf(asl_key_sender, sizeof(asl_key_sender), "com.apple.%s-%s", + DEBUGSERVER_PROGRAM_NAME, DEBUGSERVER_VERSION_STR); + ::asl_set(g_aslmsg, ASL_KEY_SENDER, asl_key_sender); + } + + int asl_level; + if (flags & DNBLOG_FLAG_FATAL) + asl_level = ASL_LEVEL_CRIT; + else if (flags & DNBLOG_FLAG_ERROR) + asl_level = ASL_LEVEL_ERR; + else if (flags & DNBLOG_FLAG_WARNING) + asl_level = ASL_LEVEL_WARNING; + else if (flags & DNBLOG_FLAG_VERBOSE) + asl_level = ASL_LEVEL_WARNING; // ASL_LEVEL_INFO; + else + asl_level = ASL_LEVEL_WARNING; // ASL_LEVEL_DEBUG; + + ::asl_vlog(NULL, g_aslmsg, asl_level, format, args); +} + +// FILE based Logging callback that can be registered with +// DNBLogSetLogCallback +void FileLogCallback(void *baton, uint32_t flags, const char *format, + va_list args) { + if (baton == NULL || format == NULL) + return; + + ::vfprintf((FILE *)baton, format, args); + ::fprintf((FILE *)baton, "\n"); + ::fflush((FILE *)baton); +} + +void show_version_and_exit(int exit_code) { + printf("%s-%s for %s.\n", DEBUGSERVER_PROGRAM_NAME, DEBUGSERVER_VERSION_STR, + RNB_ARCH); + exit(exit_code); +} + +void show_usage_and_exit(int exit_code) { + RNBLogSTDERR( + "Usage:\n %s host:port [program-name program-arg1 program-arg2 ...]\n", + DEBUGSERVER_PROGRAM_NAME); + RNBLogSTDERR(" %s /path/file [program-name program-arg1 program-arg2 ...]\n", + DEBUGSERVER_PROGRAM_NAME); + RNBLogSTDERR(" %s host:port --attach=<pid>\n", DEBUGSERVER_PROGRAM_NAME); + RNBLogSTDERR(" %s /path/file --attach=<pid>\n", DEBUGSERVER_PROGRAM_NAME); + RNBLogSTDERR(" %s host:port --attach=<process_name>\n", + DEBUGSERVER_PROGRAM_NAME); + RNBLogSTDERR(" %s /path/file --attach=<process_name>\n", + DEBUGSERVER_PROGRAM_NAME); + exit(exit_code); +} + +// option descriptors for getopt_long_only() +static struct option g_long_options[] = { + {"attach", required_argument, NULL, 'a'}, + {"arch", required_argument, NULL, 'A'}, + {"debug", no_argument, NULL, 'g'}, + {"kill-on-error", no_argument, NULL, 'K'}, + {"verbose", no_argument, NULL, 'v'}, + {"version", no_argument, NULL, 'V'}, + {"lockdown", no_argument, &g_lockdown_opt, 1}, // short option "-k" + {"applist", no_argument, &g_applist_opt, 1}, // short option "-t" + {"log-file", required_argument, NULL, 'l'}, + {"log-flags", required_argument, NULL, 'f'}, + {"launch", required_argument, NULL, 'x'}, // Valid values are "auto", + // "posix-spawn", "fork-exec", + // "springboard" (arm only) + {"waitfor", required_argument, NULL, + 'w'}, // Wait for a process whose name starts with ARG + {"waitfor-interval", required_argument, NULL, + 'i'}, // Time in usecs to wait between sampling the pid list when waiting + // for a process by name + {"waitfor-duration", required_argument, NULL, + 'd'}, // The time in seconds to wait for a process to show up by name + {"native-regs", no_argument, NULL, 'r'}, // Specify to use the native + // registers instead of the gdb + // defaults for the architecture. + {"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) + {"stdin-path", required_argument, NULL, + 'I'}, // Set the STDIN path to be used when launching applications (only if + // debugserver launches the process) + {"stdout-path", required_argument, NULL, + 'O'}, // Set the STDOUT path to be used when launching applications (only + // if debugserver launches the process) + {"stderr-path", required_argument, NULL, + 'E'}, // Set the STDERR path to be used when launching applications (only + // if debugserver launches the process) + {"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) + {"setsid", no_argument, NULL, + 'S'}, // call setsid() to make debugserver run in its own session + {"disable-aslr", no_argument, NULL, 'D'}, // Use _POSIX_SPAWN_DISABLE_ASLR + // to avoid shared library + // randomization + {"working-dir", required_argument, NULL, + 'W'}, // The working directory that the inferior process should have (only + // if debugserver launches the process) + {"platform", required_argument, NULL, + 'p'}, // Put this executable into a remote platform mode + {"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 + {"fd", required_argument, NULL, + '2'}, // A file descriptor was passed to this process when spawned that + // is already open and ready for communication + {"named-pipe", required_argument, NULL, 'P'}, + {"reverse-connect", no_argument, NULL, 'R'}, + {"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") + {"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" + {NULL, 0, NULL, 0}}; + +// main +int main(int argc, char *argv[]) { + // If debugserver is launched with DYLD_INSERT_LIBRARIES, unset it so we + // don't spawn child processes with this enabled. + unsetenv("DYLD_INSERT_LIBRARIES"); + + const char *argv_sub_zero = + argv[0]; // save a copy of argv[0] for error reporting post-launch + +#if defined(__APPLE__) + pthread_setname_np("main thread"); +#if defined(__arm__) || defined(__arm64__) || defined(__aarch64__) + struct sched_param thread_param; + int thread_sched_policy; + if (pthread_getschedparam(pthread_self(), &thread_sched_policy, + &thread_param) == 0) { + thread_param.sched_priority = 47; + pthread_setschedparam(pthread_self(), thread_sched_policy, &thread_param); + } + + ::proc_set_wakemon_params( + getpid(), 500, + 0); // Allow up to 500 wakeups/sec to avoid EXC_RESOURCE for normal use. +#endif +#endif + + g_isatty = ::isatty(STDIN_FILENO); + + // ::printf ("uid=%u euid=%u gid=%u egid=%u\n", + // getuid(), + // geteuid(), + // getgid(), + // getegid()); + + // signal (SIGINT, signal_handler); + signal(SIGPIPE, signal_handler); + signal(SIGHUP, signal_handler); + + // We're always sitting in waitpid or kevent waiting on our target process' + // death, + // we don't need no stinking SIGCHLD's... + + sigset_t sigset; + sigemptyset(&sigset); + sigaddset(&sigset, SIGCHLD); + sigprocmask(SIG_BLOCK, &sigset, NULL); + + g_remoteSP = std::make_shared<RNBRemote>(); + + RNBRemote *remote = g_remoteSP.get(); + if (remote == NULL) { + RNBLogSTDERR("error: failed to create a remote connection class\n"); + return -1; + } + + RNBContext &ctx = remote->Context(); + + int i; + int attach_pid = INVALID_NUB_PROCESS; + + FILE *log_file = NULL; + uint32_t log_flags = 0; + // Parse our options + int ch; + int long_option_index = 0; + int debug = 0; + int communication_fd = -1; + std::string compile_options; + std::string waitfor_pid_name; // Wait for a process that starts with this name + std::string attach_pid_name; + std::string arch_name; + std::string working_dir; // The new working directory to use for the inferior + 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 + 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 + useconds_t waitfor_interval = 1000; // Time in usecs between process lists + // polls when waiting for a process by + // name, default 1 msec. + useconds_t waitfor_duration = + 0; // Time in seconds to wait for a process by name, 0 means wait forever. + bool no_stdio = false; + 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 + +#if !defined(DNBLOG_ENABLED) + compile_options += "(no-logging) "; +#endif + + RNBRunLoopMode start_mode = eRNBRunLoopModeExit; + + char short_options[512]; + uint32_t short_options_idx = 0; + + // Handle the two case that don't have short options in g_long_options + short_options[short_options_idx++] = 'k'; + short_options[short_options_idx++] = 't'; + + for (i = 0; g_long_options[i].name != NULL; ++i) { + if (isalpha(g_long_options[i].val)) { + short_options[short_options_idx++] = g_long_options[i].val; + switch (g_long_options[i].has_arg) { + default: + case no_argument: + break; + + case optional_argument: + short_options[short_options_idx++] = ':'; + short_options[short_options_idx++] = ':'; + break; + case required_argument: + short_options[short_options_idx++] = ':'; + break; + } + } + } + // NULL terminate the short option string. + short_options[short_options_idx++] = '\0'; + +#if __GLIBC__ + optind = 0; +#else + optreset = 1; + optind = 1; +#endif + + bool forward_env = false; + while ((ch = getopt_long_only(argc, argv, short_options, g_long_options, + &long_option_index)) != -1) { + DNBLogDebug("option: ch == %c (0x%2.2x) --%s%c%s\n", ch, (uint8_t)ch, + g_long_options[long_option_index].name, + g_long_options[long_option_index].has_arg ? '=' : ' ', + optarg ? optarg : ""); + switch (ch) { + case 0: // Any optional that auto set themselves will return 0 + break; + + case 'A': + if (optarg && optarg[0]) + arch_name.assign(optarg); + break; + + case 'a': + if (optarg && optarg[0]) { + if (isdigit(optarg[0])) { + char *end = NULL; + attach_pid = static_cast<int>(strtoul(optarg, &end, 0)); + if (end == NULL || *end != '\0') { + RNBLogSTDERR("error: invalid pid option '%s'\n", optarg); + exit(4); + } + } else { + attach_pid_name = optarg; + } + start_mode = eRNBRunLoopModeInferiorAttaching; + } + break; + + // --waitfor=NAME + case 'w': + if (optarg && optarg[0]) { + waitfor_pid_name = optarg; + start_mode = eRNBRunLoopModeInferiorAttaching; + } + break; + + // --waitfor-interval=USEC + case 'i': + if (optarg && optarg[0]) { + char *end = NULL; + waitfor_interval = static_cast<useconds_t>(strtoul(optarg, &end, 0)); + if (end == NULL || *end != '\0') { + RNBLogSTDERR("error: invalid waitfor-interval option value '%s'.\n", + optarg); + exit(6); + } + } + break; + + // --waitfor-duration=SEC + case 'd': + if (optarg && optarg[0]) { + char *end = NULL; + waitfor_duration = static_cast<useconds_t>(strtoul(optarg, &end, 0)); + if (end == NULL || *end != '\0') { + RNBLogSTDERR("error: invalid waitfor-duration option value '%s'.\n", + optarg); + exit(7); + } + } + break; + + case 'K': + g_detach_on_error = false; + break; + case 'W': + if (optarg && optarg[0]) + working_dir.assign(optarg); + break; + + case 'x': + if (optarg && optarg[0]) { + if (strcasecmp(optarg, "auto") == 0) + g_launch_flavor = eLaunchFlavorDefault; + else if (strcasestr(optarg, "posix") == optarg) + g_launch_flavor = eLaunchFlavorPosixSpawn; + else if (strcasestr(optarg, "fork") == optarg) + g_launch_flavor = eLaunchFlavorForkExec; +#ifdef WITH_SPRINGBOARD + else if (strcasestr(optarg, "spring") == optarg) + g_launch_flavor = eLaunchFlavorSpringBoard; +#endif +#ifdef WITH_BKS + else if (strcasestr(optarg, "backboard") == optarg) + g_launch_flavor = eLaunchFlavorBKS; +#endif +#ifdef WITH_FBS + else if (strcasestr(optarg, "frontboard") == optarg) + g_launch_flavor = eLaunchFlavorFBS; +#endif + + else { + RNBLogSTDERR("error: invalid TYPE for the --launch=TYPE (-x TYPE) " + "option: '%s'\n", + optarg); + RNBLogSTDERR("Valid values TYPE are:\n"); + RNBLogSTDERR( + " auto Auto-detect the best launch method to use.\n"); + RNBLogSTDERR( + " posix Launch the executable using posix_spawn.\n"); + RNBLogSTDERR( + " fork Launch the executable using fork and exec.\n"); +#ifdef WITH_SPRINGBOARD + RNBLogSTDERR( + " spring Launch the executable through Springboard.\n"); +#endif +#ifdef WITH_BKS + RNBLogSTDERR(" backboard Launch the executable through BackBoard " + "Services.\n"); +#endif +#ifdef WITH_FBS + RNBLogSTDERR(" frontboard Launch the executable through FrontBoard " + "Services.\n"); +#endif + exit(5); + } + } + break; + + case 'l': // Set Log File + if (optarg && optarg[0]) { + if (strcasecmp(optarg, "stdout") == 0) + log_file = stdout; + else if (strcasecmp(optarg, "stderr") == 0) + log_file = stderr; + else { + log_file = fopen(optarg, "w"); + if (log_file != NULL) + setlinebuf(log_file); + } + + if (log_file == NULL) { + const char *errno_str = strerror(errno); + RNBLogSTDERR( + "Failed to open log file '%s' for writing: errno = %i (%s)", + optarg, errno, errno_str ? errno_str : "unknown error"); + } + } + break; + + case 'f': // Log Flags + if (optarg && optarg[0]) + log_flags = static_cast<uint32_t>(strtoul(optarg, NULL, 0)); + break; + + case 'g': + debug = 1; + DNBLogSetDebug(debug); + break; + + case 't': + g_applist_opt = 1; + break; + + case 'k': + g_lockdown_opt = 1; + break; + + case 'r': + // Do nothing, native regs is the default these days + break; + + case 'R': + reverse_connect = true; + break; + case 'v': + DNBLogSetVerbose(1); + break; + + case 'V': + show_version_and_exit(0); + break; + + case 's': + ctx.GetSTDIN().assign(optarg); + ctx.GetSTDOUT().assign(optarg); + ctx.GetSTDERR().assign(optarg); + break; + + case 'I': + ctx.GetSTDIN().assign(optarg); + break; + + case 'O': + ctx.GetSTDOUT().assign(optarg); + break; + + case 'E': + ctx.GetSTDERR().assign(optarg); + break; + + case 'n': + no_stdio = true; + break; + + case 'S': + // Put debugserver into a new session. Terminals group processes + // into sessions and when a special terminal key sequences + // (like control+c) are typed they can cause signals to go out to + // all processes in a session. Using this --setsid (-S) option + // will cause debugserver to run in its own sessions and be free + // from such issues. + // + // This is useful when debugserver is spawned from a command + // line application that uses debugserver to do the debugging, + // yet that application doesn't want debugserver receiving the + // signals sent to the session (i.e. dying when anyone hits ^C). + setsid(); + break; + case 'D': + g_disable_aslr = 1; + break; + + case 'p': + start_mode = eRNBRunLoopModePlatformMode; + break; + + case 'u': + unix_socket_name.assign(optarg); + break; + + case 'P': + named_pipe_path.assign(optarg); + break; + + case 'e': + // Pass a single specified environment variable down to the process that + // gets launched + remote->Context().PushEnvironment(optarg); + break; + + case 'F': + forward_env = true; + break; + + case '2': + // File descriptor passed to this process during fork/exec and is already + // open and ready for communication. + communication_fd = atoi(optarg); + break; + } + } + + if (arch_name.empty()) { +#if defined(__arm__) + arch_name.assign("arm"); +#endif + } else { + DNBSetArchitecture(arch_name.c_str()); + } + + // if (arch_name.empty()) + // { + // fprintf(stderr, "error: no architecture was specified\n"); + // exit (8); + // } + // Skip any options we consumed with getopt_long_only + argc -= optind; + argv += optind; + + if (!working_dir.empty()) { + if (remote->Context().SetWorkingDirectory(working_dir.c_str()) == false) { + RNBLogSTDERR("error: working directory doesn't exist '%s'.\n", + working_dir.c_str()); + exit(8); + } + } + + remote->Context().SetDetachOnError(g_detach_on_error); + + remote->Initialize(); + + // It is ok for us to set NULL as the logfile (this will disable any logging) + + if (log_file != NULL) { + DNBLogSetLogCallback(FileLogCallback, log_file); + // If our log file was set, yet we have no log flags, log everything! + if (log_flags == 0) + log_flags = LOG_ALL | LOG_RNB_ALL; + + DNBLogSetLogMask(log_flags); + } else { + // Enable DNB logging + + // if os_log() support is available, log through that. + auto log_callback = OsLogger::GetLogFunction(); + if (log_callback) { + DNBLogSetLogCallback(log_callback, nullptr); + DNBLog("debugserver will use os_log for internal logging."); + } else { + // Fall back to ASL support. + DNBLogSetLogCallback(ASLLogCallback, NULL); + DNBLog("debugserver will use ASL for internal logging."); + } + DNBLogSetLogMask(log_flags); + } + + if (DNBLogEnabled()) { + for (i = 0; i < argc; i++) + DNBLogDebug("argv[%i] = %s", i, argv[i]); + } + + // as long as we're dropping remotenub in as a replacement for gdbserver, + // explicitly note that this is not gdbserver. + + RNBLogSTDOUT("%s-%s %sfor %s.\n", DEBUGSERVER_PROGRAM_NAME, + DEBUGSERVER_VERSION_STR, compile_options.c_str(), RNB_ARCH); + + std::string host; + int port = INT32_MAX; + char str[PATH_MAX]; + str[0] = '\0'; + + if (g_lockdown_opt == 0 && g_applist_opt == 0 && communication_fd == -1) { + // Make sure we at least have port + if (argc < 1) { + show_usage_and_exit(1); + } + // accept 'localhost:' prefix on port number + std::string host_specifier = argv[0]; + auto colon_location = host_specifier.rfind(':'); + if (colon_location != std::string::npos) { + host = host_specifier.substr(0, colon_location); + std::string port_str = + host_specifier.substr(colon_location + 1, std::string::npos); + char *end_ptr; + port = strtoul(port_str.c_str(), &end_ptr, 0); + if (end_ptr < port_str.c_str() + port_str.size()) + show_usage_and_exit(2); + if (host.front() == '[' && host.back() == ']') + host = host.substr(1, host.size() - 2); + DNBLogDebug("host = '%s' port = %i", host.c_str(), port); + } else { + // No hostname means "localhost" + int items_scanned = ::sscanf(argv[0], "%i", &port); + if (items_scanned == 1) { + host = "127.0.0.1"; + DNBLogDebug("host = '%s' port = %i", host.c_str(), port); + } else if (argv[0][0] == '/') { + port = INT32_MAX; + strlcpy(str, argv[0], sizeof(str)); + } else { + show_usage_and_exit(2); + } + } + + // We just used the 'host:port' or the '/path/file' arg... + argc--; + argv++; + } + + // If we know we're waiting to attach, we don't need any of this other info. + if (start_mode != eRNBRunLoopModeInferiorAttaching && + start_mode != eRNBRunLoopModePlatformMode) { + if (argc == 0 || g_lockdown_opt) { + if (g_lockdown_opt != 0) { + // Work around for SIGPIPE crashes due to posix_spawn issue. + // We have to close STDOUT and STDERR, else the first time we + // try and do any, we get SIGPIPE and die as posix_spawn is + // doing bad things with our file descriptors at the moment. + int null = open("/dev/null", O_RDWR); + dup2(null, STDOUT_FILENO); + dup2(null, STDERR_FILENO); + } else if (g_applist_opt != 0) { + // List all applications we are able to see + std::string applist_plist; + int err = ListApplications(applist_plist, false, false); + if (err == 0) { + fputs(applist_plist.c_str(), stdout); + } else { + RNBLogSTDERR("error: ListApplications returned error %i\n", err); + } + // Exit with appropriate error if we were asked to list the applications + // with no other args were given (and we weren't trying to do this over + // lockdown) + return err; + } + + DNBLogDebug("Get args from remote protocol..."); + start_mode = eRNBRunLoopModeGetStartModeFromRemoteProtocol; + } else { + start_mode = eRNBRunLoopModeInferiorLaunching; + // Fill in the argv array in the context from the rest of our args. + // Skip the name of this executable and the port number + for (int i = 0; i < argc; i++) { + DNBLogDebug("inferior_argv[%i] = '%s'", i, argv[i]); + ctx.PushArgument(argv[i]); + } + } + } + + if (start_mode == eRNBRunLoopModeExit) + return -1; + + if (forward_env || start_mode == eRNBRunLoopModeInferiorLaunching) { + // Pass the current environment down to the process that gets launched + // This happens automatically in the "launching" mode. For the rest, we + // only do that if the user explicitly requested this via --forward-env + // argument. + char **host_env = *_NSGetEnviron(); + char *env_entry; + size_t i; + for (i = 0; (env_entry = host_env[i]) != NULL; ++i) + remote->Context().PushEnvironmentIfNeeded(env_entry); + } + + RNBRunLoopMode mode = start_mode; + char err_str[1024] = {'\0'}; + + while (mode != eRNBRunLoopModeExit) { + switch (mode) { + case eRNBRunLoopModeGetStartModeFromRemoteProtocol: +#ifdef WITH_LOCKDOWN + if (g_lockdown_opt) { + if (!remote->Comm().IsConnected()) { + if (remote->Comm().ConnectToService() != rnb_success) { + RNBLogSTDERR( + "Failed to get connection from a remote gdb process.\n"); + mode = eRNBRunLoopModeExit; + } else if (g_applist_opt != 0) { + // List all applications we are able to see + std::string applist_plist; + if (ListApplications(applist_plist, false, false) == 0) { + DNBLogDebug("Task list: %s", applist_plist.c_str()); + + remote->Comm().Write(applist_plist.c_str(), applist_plist.size()); + // Issue a read that will never yield any data until the other + // side + // closes the socket so this process doesn't just exit and cause + // the + // socket to close prematurely on the other end and cause data + // loss. + std::string buf; + remote->Comm().Read(buf); + } + remote->Comm().Disconnect(false); + mode = eRNBRunLoopModeExit; + break; + } else { + // Start watching for remote packets + remote->StartReadRemoteDataThread(); + } + } + } else +#endif + if (port != INT32_MAX) { + if (!ConnectRemote(remote, host.c_str(), port, reverse_connect, + named_pipe_path.c_str(), unix_socket_name.c_str())) + mode = eRNBRunLoopModeExit; + } else if (str[0] == '/') { + if (remote->Comm().OpenFile(str)) + mode = eRNBRunLoopModeExit; + } else if (communication_fd >= 0) { + // We were passed a file descriptor to use during fork/exec that is + // already open + // in our process, so lets just use it! + if (remote->Comm().useFD(communication_fd)) + mode = eRNBRunLoopModeExit; + else + remote->StartReadRemoteDataThread(); + } + + if (mode != eRNBRunLoopModeExit) { + RNBLogSTDOUT("Got a connection, waiting for process information for " + "launching or attaching.\n"); + + mode = RNBRunLoopGetStartModeFromRemote(remote); + } + break; + + case eRNBRunLoopModeInferiorAttaching: + if (!waitfor_pid_name.empty()) { + // Set our end wait time if we are using a waitfor-duration + // option that may have been specified + struct timespec attach_timeout_abstime, *timeout_ptr = NULL; + if (waitfor_duration != 0) { + DNBTimer::OffsetTimeOfDay(&attach_timeout_abstime, waitfor_duration, + 0); + timeout_ptr = &attach_timeout_abstime; + } + nub_launch_flavor_t launch_flavor = g_launch_flavor; + if (launch_flavor == eLaunchFlavorDefault) { + // Our default launch method is posix spawn + launch_flavor = eLaunchFlavorPosixSpawn; + +#if defined WITH_FBS + // Check if we have an app bundle, if so launch using SpringBoard. + if (waitfor_pid_name.find(".app") != std::string::npos) { + launch_flavor = eLaunchFlavorFBS; + } +#elif defined WITH_BKS + // Check if we have an app bundle, if so launch using SpringBoard. + if (waitfor_pid_name.find(".app") != std::string::npos) { + launch_flavor = eLaunchFlavorBKS; + } +#elif defined WITH_SPRINGBOARD + // Check if we have an app bundle, if so launch using SpringBoard. + if (waitfor_pid_name.find(".app") != std::string::npos) { + launch_flavor = eLaunchFlavorSpringBoard; + } +#endif + } + + ctx.SetLaunchFlavor(launch_flavor); + bool ignore_existing = false; + RNBLogSTDOUT("Waiting to attach to process %s...\n", + waitfor_pid_name.c_str()); + nub_process_t pid = DNBProcessAttachWait( + waitfor_pid_name.c_str(), launch_flavor, ignore_existing, + timeout_ptr, waitfor_interval, err_str, sizeof(err_str)); + g_pid = pid; + + if (pid == INVALID_NUB_PROCESS) { + ctx.LaunchStatus().SetError(-1, DNBError::Generic); + if (err_str[0]) + ctx.LaunchStatus().SetErrorString(err_str); + RNBLogSTDERR("error: failed to attach to process named: \"%s\" %s\n", + waitfor_pid_name.c_str(), err_str); + mode = eRNBRunLoopModeExit; + } else { + ctx.SetProcessID(pid); + mode = eRNBRunLoopModeInferiorExecuting; + } + } else if (attach_pid != INVALID_NUB_PROCESS) { + + RNBLogSTDOUT("Attaching to process %i...\n", attach_pid); + nub_process_t attached_pid; + mode = RNBRunLoopLaunchAttaching(remote, attach_pid, attached_pid); + if (mode != eRNBRunLoopModeInferiorExecuting) { + const char *error_str = remote->Context().LaunchStatus().AsString(); + RNBLogSTDERR("error: failed to attach process %i: %s\n", attach_pid, + error_str ? error_str : "unknown error."); + mode = eRNBRunLoopModeExit; + } + } else if (!attach_pid_name.empty()) { + struct timespec attach_timeout_abstime, *timeout_ptr = NULL; + if (waitfor_duration != 0) { + DNBTimer::OffsetTimeOfDay(&attach_timeout_abstime, waitfor_duration, + 0); + timeout_ptr = &attach_timeout_abstime; + } + + RNBLogSTDOUT("Attaching to process %s...\n", attach_pid_name.c_str()); + nub_process_t pid = DNBProcessAttachByName( + attach_pid_name.c_str(), timeout_ptr, err_str, sizeof(err_str)); + g_pid = pid; + if (pid == INVALID_NUB_PROCESS) { + ctx.LaunchStatus().SetError(-1, DNBError::Generic); + if (err_str[0]) + ctx.LaunchStatus().SetErrorString(err_str); + RNBLogSTDERR("error: failed to attach to process named: \"%s\" %s\n", + waitfor_pid_name.c_str(), err_str); + mode = eRNBRunLoopModeExit; + } else { + ctx.SetProcessID(pid); + mode = eRNBRunLoopModeInferiorExecuting; + } + + } else { + RNBLogSTDERR( + "error: asked to attach with empty name and invalid PID.\n"); + mode = eRNBRunLoopModeExit; + } + + if (mode != eRNBRunLoopModeExit) { + if (port != INT32_MAX) { + if (!ConnectRemote(remote, host.c_str(), port, reverse_connect, + named_pipe_path.c_str(), unix_socket_name.c_str())) + mode = eRNBRunLoopModeExit; + } else if (str[0] == '/') { + if (remote->Comm().OpenFile(str)) + mode = eRNBRunLoopModeExit; + } else if (communication_fd >= 0) { + // We were passed a file descriptor to use during fork/exec that is + // already open + // in our process, so lets just use it! + if (remote->Comm().useFD(communication_fd)) + mode = eRNBRunLoopModeExit; + else + remote->StartReadRemoteDataThread(); + } + + if (mode != eRNBRunLoopModeExit) + RNBLogSTDOUT("Waiting for debugger instructions for process %d.\n", + attach_pid); + } + break; + + case eRNBRunLoopModeInferiorLaunching: { + mode = RNBRunLoopLaunchInferior(remote, ctx.GetSTDINPath(), + ctx.GetSTDOUTPath(), ctx.GetSTDERRPath(), + no_stdio); + + if (mode == eRNBRunLoopModeInferiorExecuting) { + if (port != INT32_MAX) { + if (!ConnectRemote(remote, host.c_str(), port, reverse_connect, + named_pipe_path.c_str(), unix_socket_name.c_str())) + mode = eRNBRunLoopModeExit; + } else if (str[0] == '/') { + if (remote->Comm().OpenFile(str)) + mode = eRNBRunLoopModeExit; + } else if (communication_fd >= 0) { + // We were passed a file descriptor to use during fork/exec that is + // already open + // in our process, so lets just use it! + if (remote->Comm().useFD(communication_fd)) + mode = eRNBRunLoopModeExit; + else + remote->StartReadRemoteDataThread(); + } + + if (mode != eRNBRunLoopModeExit) { + const char *proc_name = "<unknown>"; + if (ctx.ArgumentCount() > 0) + proc_name = ctx.ArgumentAtIndex(0); + RNBLogSTDOUT("Got a connection, launched process %s (pid = %d).\n", + proc_name, ctx.ProcessID()); + } + } else { + const char *error_str = remote->Context().LaunchStatus().AsString(); + RNBLogSTDERR("error: failed to launch process %s: %s\n", argv_sub_zero, + error_str ? error_str : "unknown error."); + } + } break; + + case eRNBRunLoopModeInferiorExecuting: + mode = RNBRunLoopInferiorExecuting(remote); + break; + + case eRNBRunLoopModePlatformMode: + if (port != INT32_MAX) { + if (!ConnectRemote(remote, host.c_str(), port, reverse_connect, + named_pipe_path.c_str(), unix_socket_name.c_str())) + mode = eRNBRunLoopModeExit; + } else if (str[0] == '/') { + if (remote->Comm().OpenFile(str)) + mode = eRNBRunLoopModeExit; + } else if (communication_fd >= 0) { + // We were passed a file descriptor to use during fork/exec that is + // already open + // in our process, so lets just use it! + if (remote->Comm().useFD(communication_fd)) + mode = eRNBRunLoopModeExit; + else + remote->StartReadRemoteDataThread(); + } + + if (mode != eRNBRunLoopModeExit) + mode = RNBRunLoopPlatform(remote); + break; + + default: + mode = eRNBRunLoopModeExit; + break; + case eRNBRunLoopModeExit: + break; + } + } + + remote->StopReadRemoteDataThread(); + remote->Context().SetProcessID(INVALID_NUB_PROCESS); + RNBLogSTDOUT("Exiting.\n"); + + return 0; +} |