diff options
Diffstat (limited to 'lldb/source/Host/macosx/launcherXPCService/LauncherXPCService.mm')
| -rw-r--r-- | lldb/source/Host/macosx/launcherXPCService/LauncherXPCService.mm | 173 |
1 files changed, 2 insertions, 171 deletions
diff --git a/lldb/source/Host/macosx/launcherXPCService/LauncherXPCService.mm b/lldb/source/Host/macosx/launcherXPCService/LauncherXPCService.mm index a5c0c6a2093..5ec3be0a1c6 100644 --- a/lldb/source/Host/macosx/launcherXPCService/LauncherXPCService.mm +++ b/lldb/source/Host/macosx/launcherXPCService/LauncherXPCService.mm @@ -1,9 +1,3 @@ -// -// LauncherXPCService.m -// LauncherXPCService -// -// Copyright (c) 2012 Apple Inc. All rights reserved. -// #include <AvailabilityMacros.h> #if !defined(MAC_OS_X_VERSION_10_7) || MAC_OS_X_VERSION_MAX_ALLOWED < MAC_OS_X_VERSION_10_7 @@ -13,174 +7,11 @@ #if !BUILDING_ON_SNOW_LEOPARD #define __XPC_PRIVATE_H__ #include <xpc/xpc.h> -#include <spawn.h> -#include <signal.h> -#include <assert.h> -#include "LauncherXPCService.h" -// Returns 0 if successful. -int _setup_posixspawn_attributes_file_actions(xpc_object_t message, posix_spawnattr_t *attr, posix_spawn_file_actions_t *file_actions) +// Returns 0 if successful. This is launching as self. No need for further authorization. +int _validate_authorization(xpc_object_t message) { - *attr = 0; - - int errorCode = posix_spawnattr_init(attr); - if (errorCode) - return errorCode; - - cpu_type_t cpuType = xpc_dictionary_get_int64(message, LauncherXPCServiceCPUTypeKey); - if (cpuType == -2) { - cpuType= CPU_TYPE_ANY; - } - size_t realCount; - errorCode = posix_spawnattr_setbinpref_np(attr, 1, &cpuType, &realCount); - if (errorCode) - return errorCode; - - sigset_t no_signals; - sigset_t all_signals; - sigemptyset (&no_signals); - sigfillset (&all_signals); - posix_spawnattr_setsigmask(attr, &no_signals); - posix_spawnattr_setsigdefault(attr, &all_signals); - - short flags = xpc_dictionary_get_int64(message, LauncherXPCServicePosixspawnFlagsKey); - errorCode = posix_spawnattr_setflags(attr, flags); - if (errorCode) - return errorCode; - - // Setup any file actions. Here we are emulating what debugserver would do normally in Host.mm since the XPC service meant only for debugserver. - errorCode = posix_spawn_file_actions_init(file_actions); - if (errorCode) - return errorCode; - errorCode = posix_spawn_file_actions_addclose(file_actions, STDIN_FILENO); - if (errorCode) - return errorCode; - errorCode = posix_spawn_file_actions_addclose(file_actions, STDOUT_FILENO); - if (errorCode) - return errorCode; - errorCode = posix_spawn_file_actions_addclose(file_actions, STDERR_FILENO); - - return errorCode; -} - -bool extract_args(xpc_object_t message, const char *prefix, const char ***argsOut) -{ - char buf[50]; // long enough for 'argXXX' - memset(buf, 0, 50); - sprintf(buf, "%sCount", prefix); - int argsCount = xpc_dictionary_get_int64(message, buf); - if (argsCount == 0) { - return true; - } - - const char **argsp = NULL; - argsp = (const char **)malloc((argsCount+1) * sizeof(argsp[0])); - if (argsp == NULL) { - return false; - } - - for (int i=0; i<argsCount; i++) { - memset(buf, 0, 50); - sprintf(buf, "%s%i", prefix, i); - const char *arg = xpc_dictionary_get_string(message, buf); - argsp[i] = arg; - } - argsp[argsCount] = NULL; - - *argsOut = argsp; - return true; -} - -// Returns 0 if successful. -int get_args(xpc_object_t message, const char **path, const char ***argsOut, const char ***envOut) -{ - if (!extract_args(message, LauncherXPCServiceArgPrefxKey, argsOut)) { - return 1; - } - *path = (*argsOut)[0]; - - if (!extract_args(message, LauncherXPCServiceEnvPrefxKey, envOut)) { - return 2; - } - return 0; } -static void launcherXPC_peer_event_handler(xpc_connection_t peer, xpc_object_t event) -{ - xpc_type_t type = xpc_get_type(event); - if (type == XPC_TYPE_ERROR) { - if (event == XPC_ERROR_CONNECTION_INVALID) { - // The client process on the other end of the connection has either - // crashed or cancelled the connection. After receiving this error, - // the connection is in an invalid state, and you do not need to - // call xpc_connection_cancel(). Just tear down any associated state - // here. - } else if (event == XPC_ERROR_TERMINATION_IMMINENT) { - // Handle per-connection termination cleanup. - } - } else { - assert(type == XPC_TYPE_DICTIONARY); - // Handle the message. - - pid_t childPID = 0; - posix_spawn_file_actions_t file_actions; - posix_spawnattr_t attributes; - - /* - Types of error. Error code will be specific to each type. - 1 - posixspawn attributes problem - 2 - get args/env problem - 3 - posixspawn problem - */ - int errorType = 1; - int errorCode = _setup_posixspawn_attributes_file_actions(event, &attributes, &file_actions); - if (!errorCode) { - const char *path = NULL; - const char **argvp = NULL; - const char **envp = NULL; - errorType = 2; - errorCode = get_args(event, &path, &argvp, &envp); - if (!errorCode) { - errorType = 3; - errorCode = posix_spawn(&childPID, path, &file_actions, &attributes, (char * const *)argvp, (char * const *)envp); - - if (argvp) free(argvp); - if (envp) free(envp); - } - } - - xpc_object_t reply = xpc_dictionary_create_reply(event); - - xpc_dictionary_set_int64(reply, LauncherXPCServiceChildPIDKey, childPID); - if (!childPID) { - xpc_dictionary_set_int64(reply, LauncherXPCServiceErrorTypeKey, errorType); - xpc_dictionary_set_int64(reply, LauncherXPCServiceCodeTypeKey, errorCode); - } - - xpc_connection_send_message(peer, reply); - xpc_release(reply); - - } -} - -static void launcherXPC_event_handler(xpc_connection_t peer) -{ - // By defaults, new connections will target the default dispatch - // concurrent queue. - xpc_connection_set_event_handler(peer, ^(xpc_object_t event) { - launcherXPC_peer_event_handler(peer, event); - }); - - // This will tell the connection to begin listening for events. If you - // have some other initialization that must be done asynchronously, then - // you can defer this call until after that initialization is done. - xpc_connection_resume(peer); -} - -int main(int argc, const char *argv[]) -{ - xpc_main(launcherXPC_event_handler); - return 0; -} #endif |
