blob: c30b90e590f4b9f0fe758b42324c1425b55ec8d3 [file] [log] [blame]
/*
* idevicedebug.c
* Interact with the debugserver service of a device.
*
* Copyright (c) 2014-2015 Martin Szulecki All Rights Reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#define TOOL_NAME "idevicedebug"
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#include <libgen.h>
#include <getopt.h>
#ifdef WIN32
#include <windows.h>
#define sleep(x) Sleep(x*1000)
#endif
#include <libimobiledevice/installation_proxy.h>
#include <libimobiledevice/libimobiledevice.h>
#include <libimobiledevice/debugserver.h>
#include <plist/plist.h>
#include "common/debug.h"
static int debug_level = 0;
#define log_debug(...) if (debug_level > 0) { printf(__VA_ARGS__); fputc('\n', stdout); }
enum cmd_mode {
CMD_NONE = 0,
CMD_RUN,
CMD_KILL
};
static int quit_flag = 0;
static void on_signal(int sig)
{
fprintf(stderr, "Exiting...\n");
quit_flag++;
}
static int cancel_receive()
{
return quit_flag;
}
static instproxy_error_t instproxy_client_get_object_by_key_from_info_dictionary_for_bundle_identifier(instproxy_client_t client, const char* appid, const char* key, plist_t* node)
{
if (!client || !appid || !key)
return INSTPROXY_E_INVALID_ARG;
plist_t apps = NULL;
// create client options for any application types
plist_t client_opts = instproxy_client_options_new();
instproxy_client_options_add(client_opts, "ApplicationType", "Any", NULL);
// only return attributes we need
instproxy_client_options_set_return_attributes(client_opts, "CFBundleIdentifier", "CFBundleExecutable", key, NULL);
// only query for specific appid
const char* appids[] = {appid, NULL};
// query device for list of apps
instproxy_error_t ierr = instproxy_lookup(client, appids, client_opts, &apps);
instproxy_client_options_free(client_opts);
if (ierr != INSTPROXY_E_SUCCESS) {
return ierr;
}
plist_t app_found = plist_access_path(apps, 1, appid);
if (!app_found) {
if (apps)
plist_free(apps);
*node = NULL;
return INSTPROXY_E_OP_FAILED;
}
plist_t object = plist_dict_get_item(app_found, key);
if (object) {
*node = plist_copy(object);
} else {
log_debug("key %s not found", key);
return INSTPROXY_E_OP_FAILED;
}
plist_free(apps);
return INSTPROXY_E_SUCCESS;
}
static debugserver_error_t debugserver_client_handle_response(debugserver_client_t client, char** response, int* exit_status)
{
debugserver_error_t dres = DEBUGSERVER_E_SUCCESS;
char* o = NULL;
char* r = *response;
/* Documentation of response codes can be found here:
https://github.com/llvm/llvm-project/blob/4fe839ef3a51e0ea2e72ea2f8e209790489407a2/lldb/docs/lldb-gdb-remote.txt#L1269
*/
if (r[0] == 'O') {
/* stdout/stderr */
debugserver_decode_string(r + 1, strlen(r) - 1, &o);
printf("%s", o);
fflush(stdout);
} else if (r[0] == 'T') {
/* thread stopped information */
log_debug("Thread stopped. Details:\n%s", r + 1);
if (exit_status != NULL) {
/* "Thread stopped" seems to happen when assert() fails.
Use bash convention where signals cause an exit
status of 128 + signal
*/
*exit_status = 128 + SIGABRT;
}
/* Break out of the loop. */
dres = DEBUGSERVER_E_UNKNOWN_ERROR;
} else if (r[0] == 'E') {
printf("ERROR: %s\n", r + 1);
} else if (r[0] == 'W' || r[0] == 'X') {
/* process exited */
debugserver_decode_string(r + 1, strlen(r) - 1, &o);
if (o != NULL) {
printf("Exit %s: %u\n", (r[0] == 'W' ? "status" : "due to signal"), o[0]);
if (exit_status != NULL) {
/* Use bash convention where signals cause an
exit status of 128 + signal
*/
*exit_status = o[0] + (r[0] == 'W' ? 0 : 128);
}
} else {
log_debug("Unable to decode exit status from %s", r);
dres = DEBUGSERVER_E_UNKNOWN_ERROR;
}
} else if (r && strlen(r) == 0) {
log_debug("empty response");
} else {
log_debug("ERROR: unhandled response '%s'", r);
}
if (o != NULL) {
free(o);
o = NULL;
}
free(*response);
*response = NULL;
return dres;
}
static void print_usage(int argc, char **argv, int is_error)
{
char *name = NULL;
name = strrchr(argv[0], '/');
fprintf(is_error ? stderr : stdout, "Usage: %s [OPTIONS] COMMAND\n", (name ? name + 1: argv[0]));
fprintf(is_error ? stderr : stdout,
"\n" \
"Interact with the debugserver service of a device.\n" \
"\n" \
"Where COMMAND is one of:\n" \
" run BUNDLEID [ARGS...]\trun app with BUNDLEID and optional ARGS on device.\n" \
" kill BUNDLEID\tkill app with BUNDLEID\n" \
"\n" \
"The following OPTIONS are accepted:\n" \
" -u, --udid UDID\ttarget specific device by UDID\n" \
" -n, --network\t\tconnect to network device\n" \
" --detach\t\tdetach from app after launch, keeping it running\n" \
" -e, --env NAME=VALUE\tset environment variable NAME to VALUE\n" \
" -d, --debug\t\tenable communication debugging\n" \
" -h, --help\t\tprints usage information\n" \
" -v, --version\t\tprints version information\n" \
"\n" \
"Homepage: <" PACKAGE_URL ">\n" \
"Bug Reports: <" PACKAGE_BUGREPORT ">\n"
);
}
int main(int argc, char *argv[])
{
int res = -1;
idevice_t device = NULL;
idevice_error_t ret = IDEVICE_E_UNKNOWN_ERROR;
instproxy_client_t instproxy_client = NULL;
debugserver_client_t debugserver_client = NULL;
int i;
int cmd = CMD_NONE;
const char* udid = NULL;
int use_network = 0;
int detach_after_start = 0;
const char* bundle_identifier = NULL;
char* path = NULL;
char* working_directory = NULL;
char **newlist = NULL;
char** environment = NULL;
int environment_index = 0;
int environment_count = 0;
char* response = NULL;
debugserver_command_t command = NULL;
debugserver_error_t dres = DEBUGSERVER_E_UNKNOWN_ERROR;
int c = 0;
const struct option longopts[] = {
{ "debug", no_argument, NULL, 'd' },
{ "help", no_argument, NULL, 'h' },
{ "udid", required_argument, NULL, 'u' },
{ "network", no_argument, NULL, 'n' },
{ "detach", no_argument, NULL, 1 },
{ "env", required_argument, NULL, 'e' },
{ "version", no_argument, NULL, 'v' },
{ NULL, 0, NULL, 0 }
};
/* map signals */
signal(SIGINT, on_signal);
signal(SIGTERM, on_signal);
#ifndef WIN32
signal(SIGQUIT, on_signal);
signal(SIGPIPE, SIG_IGN);
#endif
while ((c = getopt_long(argc, argv, "dhu:ne:v", longopts, NULL)) != -1) {
switch (c) {
case 'd':
debug_level++;
if (debug_level > 1) {
idevice_set_debug_level(debug_level-1);
}
break;
case 'u':
if (!*optarg) {
fprintf(stderr, "ERROR: UDID must not be empty!\n");
print_usage(argc, argv, 1);
return 2;
}
udid = optarg;
break;
case 'n':
use_network = 1;
break;
case 1:
detach_after_start = 1;
break;
case 'e':
if (!*optarg || strchr(optarg, '=') == NULL) {
fprintf(stderr, "ERROR: environment variables need to be specified as -e KEY=VALUE\n");
print_usage(argc, argv, 1);
res = 2;
goto cleanup;
}
/* add environment variable */
if (!newlist)
newlist = malloc((environment_count + 1) * sizeof(char*));
else
newlist = realloc(environment, (environment_count + 1) * sizeof(char*));
newlist[environment_count++] = strdup(optarg);
environment = newlist;
break;
case 'h':
print_usage(argc, argv, 0);
res = 0;
goto cleanup;
break;
case 'v':
printf("%s %s\n", TOOL_NAME, PACKAGE_VERSION);
res = 0;
goto cleanup;
break;
}
}
argc -= optind;
argv += optind;
if (argc < 1) {
fprintf(stderr, "ERROR: Missing command.\n");
print_usage(argc+optind, argv-optind, 1);
}
if (!strcmp(argv[0], "run")) {
cmd = CMD_RUN;
if (argc < 2) {
/* make sure at least the bundle identifier was provided */
fprintf(stderr, "ERROR: Please supply the bundle identifier of the app to run.\n");
print_usage(argc+optind, argv-optind, 1);
res = 2;
goto cleanup;
}
/* read bundle identifier */
bundle_identifier = argv[1];
i = 1;
} else if (!strcmp(argv[0], "kill")) {
cmd = CMD_KILL;
if (argc < 2) {
/* make sure at least the bundle identifier was provided */
fprintf(stderr, "ERROR: Please supply the bundle identifier of the app to run.\n");
print_usage(argc+optind, argv-optind, 1);
res = 2;
goto cleanup;
}
/* read bundle identifier */
bundle_identifier = argv[1];
i = 1;
}
/* verify options */
if (cmd == CMD_NONE) {
fprintf(stderr, "ERROR: Unsupported command specified.\n");
print_usage(argc+optind, argv-optind, 1);
res = 2;
goto cleanup;
}
if (environment) {
newlist = realloc(environment, (environment_count + 1) * sizeof(char*));
newlist[environment_count] = NULL;
environment = newlist;
}
/* connect to the device */
ret = idevice_new_with_options(&device, udid, (use_network) ? IDEVICE_LOOKUP_NETWORK : IDEVICE_LOOKUP_USBMUX);
if (ret != IDEVICE_E_SUCCESS) {
if (udid) {
printf("No device found with udid %s.\n", udid);
} else {
printf("No device found.\n");
}
goto cleanup;
}
/* get the path to the app and it's working directory */
if (instproxy_client_start_service(device, &instproxy_client, TOOL_NAME) != INSTPROXY_E_SUCCESS) {
fprintf(stderr, "Could not start installation proxy service.\n");
goto cleanup;
}
instproxy_client_get_path_for_bundle_identifier(instproxy_client, bundle_identifier, &path);
if (!path) {
fprintf(stderr, "Invalid bundle identifier: %s\n", bundle_identifier);
goto cleanup;
}
plist_t container = NULL;
instproxy_client_get_object_by_key_from_info_dictionary_for_bundle_identifier(instproxy_client, bundle_identifier, "Container", &container);
instproxy_client_free(instproxy_client);
instproxy_client = NULL;
if (container && (plist_get_node_type(container) == PLIST_STRING)) {
plist_get_string_val(container, &working_directory);
log_debug("working_directory: %s\n", working_directory);
plist_free(container);
} else {
plist_free(container);
fprintf(stderr, "Could not determine container path for bundle identifier %s.\n", bundle_identifier);
goto cleanup;
}
/* start and connect to debugserver */
if (debugserver_client_start_service(device, &debugserver_client, TOOL_NAME) != DEBUGSERVER_E_SUCCESS) {
fprintf(stderr,
"Could not start com.apple.debugserver!\n"
"Please make sure to mount the developer disk image first:\n"
" 1) Get the iOS version from `ideviceinfo -k ProductVersion`.\n"
" 2) Find the matching iPhoneOS DeveloperDiskImage.dmg files.\n"
" 3) Run `ideviceimagemounter` with the above path.\n");
goto cleanup;
}
/* set receive params */
if (debugserver_client_set_receive_params(debugserver_client, cancel_receive, 250) != DEBUGSERVER_E_SUCCESS) {
fprintf(stderr, "Error in debugserver_client_set_receive_params\n");
goto cleanup;
}
/* enable logging for the session in debug mode */
if (debug_level) {
log_debug("Setting logging bitmask...");
debugserver_command_new("QSetLogging:bitmask=LOG_ALL|LOG_RNB_REMOTE|LOG_RNB_PACKETS;", 0, NULL, &command);
dres = debugserver_client_send_command(debugserver_client, command, &response, NULL);
debugserver_command_free(command);
command = NULL;
if (response) {
if (strncmp(response, "OK", 2)) {
debugserver_client_handle_response(debugserver_client, &response, NULL);
goto cleanup;
}
free(response);
response = NULL;
}
}
/* set maximum packet size */
log_debug("Setting maximum packet size...");
char* packet_size[2] = { (char*)"1024", NULL};
debugserver_command_new("QSetMaxPacketSize:", 1, packet_size, &command);
dres = debugserver_client_send_command(debugserver_client, command, &response, NULL);
debugserver_command_free(command);
command = NULL;
if (response) {
if (strncmp(response, "OK", 2)) {
debugserver_client_handle_response(debugserver_client, &response, NULL);
goto cleanup;
}
free(response);
response = NULL;
}
/* set working directory */
log_debug("Setting working directory...");
char* working_dir[2] = {working_directory, NULL};
debugserver_command_new("QSetWorkingDir:", 1, working_dir, &command);
dres = debugserver_client_send_command(debugserver_client, command, &response, NULL);
debugserver_command_free(command);
command = NULL;
if (response) {
if (strncmp(response, "OK", 2)) {
debugserver_client_handle_response(debugserver_client, &response, NULL);
goto cleanup;
}
free(response);
response = NULL;
}
/* set environment */
if (environment) {
log_debug("Setting environment...");
for (environment_index = 0; environment_index < environment_count; environment_index++) {
log_debug("setting environment variable: %s", environment[environment_index]);
debugserver_client_set_environment_hex_encoded(debugserver_client, environment[environment_index], NULL);
}
}
/* set arguments and run app */
log_debug("Setting argv...");
i++; /* i is the offset of the bundle identifier, thus skip it */
int app_argc = (argc - i + 2);
char **app_argv = (char**)malloc(sizeof(char*) * app_argc);
app_argv[0] = path;
log_debug("app_argv[%d] = %s", 0, app_argv[0]);
app_argc = 1;
while (i < argc && argv && argv[i]) {
log_debug("app_argv[%d] = %s", app_argc, argv[i]);
app_argv[app_argc++] = argv[i];
i++;
}
app_argv[app_argc] = NULL;
debugserver_client_set_argv(debugserver_client, app_argc, app_argv, NULL);
free(app_argv);
/* check if launch succeeded */
log_debug("Checking if launch succeeded...");
debugserver_command_new("qLaunchSuccess", 0, NULL, &command);
dres = debugserver_client_send_command(debugserver_client, command, &response, NULL);
debugserver_command_free(command);
command = NULL;
if (response) {
if (strncmp(response, "OK", 2)) {
debugserver_client_handle_response(debugserver_client, &response, NULL);
goto cleanup;
}
free(response);
response = NULL;
}
if (cmd == CMD_KILL) {
debugserver_command_new("k", 0, NULL, &command);
dres = debugserver_client_send_command(debugserver_client, command, &response, NULL);
debugserver_command_free(command);
command = NULL;
goto cleanup;
} else
if (cmd == CMD_RUN) {
if (detach_after_start) {
log_debug("Detaching from app");
debugserver_command_new("D", 0, NULL, &command);
dres = debugserver_client_send_command(debugserver_client, command, &response, NULL);
debugserver_command_free(command);
command = NULL;
res = (dres == DEBUGSERVER_E_SUCCESS) ? 0: -1;
goto cleanup;
}
/* set thread */
log_debug("Setting thread...");
debugserver_command_new("Hc0", 0, NULL, &command);
dres = debugserver_client_send_command(debugserver_client, command, &response, NULL);
debugserver_command_free(command);
command = NULL;
if (response) {
if (strncmp(response, "OK", 2)) {
debugserver_client_handle_response(debugserver_client, &response, NULL);
goto cleanup;
}
free(response);
response = NULL;
}
/* continue running process */
log_debug("Continue running process...");
debugserver_command_new("c", 0, NULL, &command);
dres = debugserver_client_send_command(debugserver_client, command, &response, NULL);
debugserver_command_free(command);
command = NULL;
log_debug("Continue response: %s", response);
/* main loop which is parsing/handling packets during the run */
log_debug("Entering run loop...");
while (!quit_flag) {
if (dres != DEBUGSERVER_E_SUCCESS) {
log_debug("failed to receive response; error %d", dres);
break;
}
if (response) {
log_debug("response: %s", response);
if (strncmp(response, "OK", 2)) {
dres = debugserver_client_handle_response(debugserver_client, &response, &res);
if (dres != DEBUGSERVER_E_SUCCESS) {
log_debug("failed to process response; error %d; %s", dres, response);
break;
}
}
}
if (res >= 0) {
goto cleanup;
}
dres = debugserver_client_receive_response(debugserver_client, &response, NULL);
}
/* ignore quit_flag after this point */
if (debugserver_client_set_receive_params(debugserver_client, NULL, 5000) != DEBUGSERVER_E_SUCCESS) {
fprintf(stderr, "Error in debugserver_client_set_receive_params\n");
goto cleanup;
}
/* interrupt execution */
debugserver_command_new("\x03", 0, NULL, &command);
dres = debugserver_client_send_command(debugserver_client, command, &response, NULL);
debugserver_command_free(command);
command = NULL;
if (response) {
if (strncmp(response, "OK", 2)) {
debugserver_client_handle_response(debugserver_client, &response, NULL);
}
free(response);
response = NULL;
}
/* kill process after we finished */
log_debug("Killing process...");
debugserver_command_new("k", 0, NULL, &command);
dres = debugserver_client_send_command(debugserver_client, command, &response, NULL);
debugserver_command_free(command);
command = NULL;
if (response) {
if (strncmp(response, "OK", 2)) {
debugserver_client_handle_response(debugserver_client, &response, NULL);
}
free(response);
response = NULL;
}
if (res < 0) {
res = (dres == DEBUGSERVER_E_SUCCESS) ? 0: -1;
}
}
cleanup:
/* cleanup the house */
if (environment) {
for (environment_index = 0; environment_index < environment_count; environment_index++) {
free(environment[environment_index]);
}
free(environment);
}
if (working_directory)
free(working_directory);
if (path)
free(path);
if (response)
free(response);
if (debugserver_client)
debugserver_client_free(debugserver_client);
if (device)
idevice_free(device);
return res;
}