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open_toontown_panda3d/direct/src/plugin_standalone/panda3d.cxx

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// Filename: panda3d.cxx
// Created by: drose (03Jun09)
//
////////////////////////////////////////////////////////////////////
//
// PANDA 3D SOFTWARE
// Copyright (c) Carnegie Mellon University. All rights reserved.
//
// All use of this software is subject to the terms of the revised BSD
// license. You should have received a copy of this license along
// with this source code in a file named "LICENSE."
//
////////////////////////////////////////////////////////////////////
#include "panda3d.h"
#include "load_plugin.h"
#include "p3d_plugin_config.h"
#include "find_root_dir.h"
// We can include this header file to get the DTOOL_PLATFORM
// definition, even though we don't link with dtool.
#include "dtool_platform.h"
#include "pandaVersion.h"
#include <ctype.h>
#include <sstream>
#include <algorithm>
#ifdef _WIN32
#include <windows.h>
#else
#include <signal.h>
#endif
#ifndef HAVE_GETOPT
#include "gnu_getopt.h"
#else
#ifdef PHAVE_GETOPT_H
#include <getopt.h>
#endif
#endif
////////////////////////////////////////////////////////////////////
// Function: Panda3D::Constructor
// Access: Public
// Description:
////////////////////////////////////////////////////////////////////
Panda3D::
Panda3D(bool console_environment) : Panda3DBase(console_environment) {
}
////////////////////////////////////////////////////////////////////
// Function: Panda3D::run_command_line
// Access: Public
// Description: Starts the program going, with command-line arguments.
// Returns 0 on success, nonzero on failure.
////////////////////////////////////////////////////////////////////
int Panda3D::
run_command_line(int argc, char *argv[]) {
extern char *optarg;
extern int optind;
// We prefix a "+" sign to tell gnu getopt not to parse options
// following the first not-option parameter. (These will be passed
// into the sub-process.)
const char *optstr = "+mu:M:Sp:fw:t:s:o:l:iVUPh";
bool allow_multiple = false;
int flag = getopt(argc, argv, optstr);
while (flag != EOF) {
switch (flag) {
case 'm':
allow_multiple = true;
break;
case 'u':
_host_url = optarg;
break;
case 'M':
_super_mirror_url = optarg;
break;
case 'S':
_enable_security = true;
break;
case 'p':
_this_platform = optarg;
break;
case 'f':
_verify_contents = true;
break;
case 'w':
if (strcmp(optarg, "toplevel") == 0) {
_window_type = P3D_WT_toplevel;
} else if (strcmp(optarg, "embedded") == 0) {
_window_type = P3D_WT_embedded;
} else if (strcmp(optarg, "fullscreen") == 0) {
_window_type = P3D_WT_fullscreen;
} else if (strcmp(optarg, "hidden") == 0) {
_window_type = P3D_WT_hidden;
} else {
cerr << "Invalid value for -w: " << optarg << "\n";
return 1;
}
break;
case 't':
if (!parse_token(optarg)) {
cerr << "Web tokens (-t) must be of the form token=value: " << optarg << "\n";
return 1;
}
break;
case 's':
if (!parse_int_pair(optarg, _win_width, _win_height)) {
cerr << "Invalid value for -s: " << optarg << "\n";
return 1;
}
break;
case 'o':
if (!parse_int_pair(optarg, _win_x, _win_y)) {
cerr << "Invalid value for -o: " << optarg << "\n";
return 1;
}
break;
case 'l':
_log_dirname = Filename::from_os_specific(optarg).to_os_specific();
_log_basename = "p3dcore";
break;
case 'i':
{
P3D_token token;
token._keyword = "keep_pythonpath";
token._value = "1";
_tokens.push_back(token);
token._keyword = "interactive_console";
token._value = "1";
_tokens.push_back(token);
// We should also ignore control-C in this case, so that an
// interrupt will be delivered to the subordinate Python
// process and return to a command shell, and won't just kill
// the panda3d process.
#ifdef _WIN32
SetConsoleCtrlHandler(NULL, true);
#else
struct sigaction ignore;
memset(&ignore, 0, sizeof(ignore));
ignore.sa_handler = SIG_IGN;
sigaction(SIGINT, &ignore, NULL);
#endif // _WIN32
}
break;
case 'V':
cout << P3D_PLUGIN_MAJOR_VERSION << "."
<< P3D_PLUGIN_MINOR_VERSION << "."
<< P3D_PLUGIN_SEQUENCE_VERSION;
#ifndef PANDA_OFFICIAL_VERSION
cout << "c";
#endif
cout << "\n";
exit(0);
case 'U':
cout << PANDA_PACKAGE_HOST_URL << "\n";
exit(0);
case 'P':
cout << DTOOL_PLATFORM << "\n";
exit(0);
case 'h':
case '?':
case '+':
default:
usage();
return 1;
}
flag = getopt(argc, argv, optstr);
}
argc -= (optind-1);
argv += (optind-1);
if (argc < 2 && _exit_with_last_instance) {
// No instances on the command line--that *might* be an error.
usage();
return 1;
}
if (!post_arg_processing()) {
return 1;
}
int num_instance_filenames, num_instance_args;
char **instance_filenames, **instance_args;
if (argc > 1) {
if (allow_multiple) {
// With -m, the remaining arguments are all instance filenames.
num_instance_filenames = argc - 1;
instance_filenames = argv + 1;
num_instance_args = 0;
instance_args = argv + argc;
} else {
// Without -m, there is one instance filename, and everything else
// gets delivered to that instance.
num_instance_filenames = 1;
instance_filenames = argv + 1;
num_instance_args = argc - 2;
instance_args = argv + 2;
}
if (_window_type == P3D_WT_embedded) {
// The user asked for an embedded window. Create a toplevel
// window to be its parent, of the requested size.
if (_win_width == 0 && _win_height == 0) {
_win_width = 640;
_win_height = 480;
}
make_parent_window();
// Center the child window(s) within the parent window.
#ifdef _WIN32
assert(_parent_window._window_handle_type == P3D_WHT_win_hwnd);
HWND parent_hwnd = _parent_window._handle._win_hwnd._hwnd;
RECT rect;
GetClientRect(parent_hwnd, &rect);
_win_x = (int)(rect.right * 0.1);
_win_y = (int)(rect.bottom * 0.1);
_win_width = (int)(rect.right * 0.8);
_win_height = (int)(rect.bottom * 0.8);
#endif
// Subdivide the window into num_x_spans * num_y_spans sub-windows.
int num_y_spans = int(sqrt((double)num_instance_filenames));
int num_x_spans = (num_instance_filenames + num_y_spans - 1) / num_y_spans;
int inst_width = _win_width / num_x_spans;
int inst_height = _win_height / num_y_spans;
for (int yi = 0; yi < num_y_spans; ++yi) {
for (int xi = 0; xi < num_x_spans; ++xi) {
int i = yi * num_x_spans + xi;
if (i >= num_instance_filenames) {
continue;
}
// Create instance i at window slot (xi, yi).
int inst_x = _win_x + xi * inst_width;
int inst_y = _win_y + yi * inst_height;
P3D_instance *inst = create_instance
(instance_filenames[i], true,
inst_x, inst_y, inst_width, inst_height,
instance_args, num_instance_args);
_instances.insert(inst);
}
}
} else {
// Not an embedded window. Create each window with the same parameters.
for (int i = 0; i < num_instance_filenames; ++i) {
P3D_instance *inst = create_instance
(instance_filenames[i], true,
_win_x, _win_y, _win_width, _win_height,
instance_args, num_instance_args);
_instances.insert(inst);
}
}
}
run_main_loop();
// All instances have finished; we can exit.
unload_plugin();
return 0;
}
////////////////////////////////////////////////////////////////////
// Function: Panda3D::post_arg_processing
// Access: Protected
// Description: Sets up some internal state after processing the
// command-line arguments. Returns true on success,
// false on failure.
////////////////////////////////////////////////////////////////////
bool Panda3D::
post_arg_processing() {
// Now is a good time to assign _root_dir.
_root_dir = find_root_dir();
// Set host_url_prefix to end with a slash.
_host_url_prefix = _host_url;
if (!_host_url_prefix.empty() && _host_url_prefix[_host_url_prefix.length() - 1] != '/') {
_host_url_prefix += '/';
}
_download_url_prefix = _host_url_prefix;
// If the "super mirror" URL is a filename, convert it to a file:// url.
if (!_super_mirror_url.empty()) {
if (!is_url(_super_mirror_url)) {
Filename filename = Filename::from_os_specific(_super_mirror_url);
filename.make_absolute();
string path = filename.to_os_generic();
if (!path.empty() && path[0] != '/') {
// On Windows, a leading drive letter must be preceded by an
// additional slash.
path = "/" + path;
}
_super_mirror_url = "file://" + path;
}
// And make sure the super_mirror_url_prefix ends with a slash.
_super_mirror_url_prefix = _super_mirror_url;
if (!_super_mirror_url_prefix.empty() && _super_mirror_url_prefix[_super_mirror_url_prefix.length() - 1] != '/') {
_super_mirror_url_prefix += '/';
}
}
if (!get_plugin()) {
cerr << "Unable to load Panda3D plugin.\n";
return false;
}
// Set up the "super mirror" URL, if specified.
if (!_super_mirror_url.empty()) {
P3D_set_super_mirror_ptr(_super_mirror_url.c_str());
}
return true;
}
////////////////////////////////////////////////////////////////////
// Function: Panda3D::get_plugin
// Access: Protected
// Description: Downloads the contents.xml file from the named URL
// and attempts to use it to load the core API. Returns
// true on success, false on failure.
////////////////////////////////////////////////////////////////////
bool Panda3D::
get_plugin() {
// First, look for the existing contents.xml file.
Filename contents_filename = Filename(Filename::from_os_specific(_root_dir), "contents.xml");
if (!_verify_contents && read_contents_file(contents_filename)) {
// Got the file, and it's good.
return true;
}
// Couldn't read it, so go get it.
HTTPClient *http = HTTPClient::get_global_ptr();
// Try the super_mirror first.
if (!_super_mirror_url_prefix.empty()) {
// We don't bother putting a uniquifying query string when we're
// downloading this file from the super_mirror. The super_mirror
// is by definition a cache, so it doesn't make sense to bust
// caches here.
string url = _super_mirror_url_prefix + "contents.xml";
PT(HTTPChannel) channel = http->make_channel(false);
channel->get_document(url);
Filename tempfile = Filename::temporary("", "p3d_");
if (!channel->download_to_file(tempfile)) {
cerr << "Unable to download " << url << "\n";
tempfile.unlink();
} else {
// Successfully downloaded from the super_mirror; move it into
// place and try to read it.
contents_filename.make_dir();
contents_filename.unlink();
tempfile.rename_to(contents_filename);
if (read_contents_file(contents_filename)) {
return true;
}
}
// Failed to download from the super_mirror.
}
// Go download contents.xml from the actual host.
ostringstream strm;
strm << _host_url_prefix << "contents.xml";
// Append a uniquifying query string to the URL to force the
// download to go all the way through any caches. We use the time
// in seconds; that's unique enough.
strm << "?" << time(NULL);
string url = strm.str();
// We might as well explicitly request the cache to be disabled too,
// since we have an interface for that via HTTPChannel.
DocumentSpec request(url);
request.set_cache_control(DocumentSpec::CC_no_cache);
PT(HTTPChannel) channel = http->make_channel(false);
channel->get_document(request);
// First, download it to a temporary file.
Filename tempfile = Filename::temporary("", "p3d_");
if (!channel->download_to_file(tempfile)) {
cerr << "Unable to download " << url << "\n";
tempfile.unlink();
// Couldn't download, but fall through and try to read the
// contents.xml file anyway. Maybe it's good enough.
} else {
// Successfully downloaded; move the temporary file into place.
contents_filename.make_dir();
contents_filename.unlink();
tempfile.rename_to(contents_filename);
}
// Since we had to download some of it, might as well ask the core
// API to check all of it.
_verify_contents = true;
return read_contents_file(contents_filename);
}
////////////////////////////////////////////////////////////////////
// Function: Panda3D::read_contents_file
// Access: Protected
// Description: Attempts to open and read the contents.xml file on
// disk, and uses that data to load the plugin, if
// possible. Returns true on success, false on failure.
////////////////////////////////////////////////////////////////////
bool Panda3D::
read_contents_file(const Filename &contents_filename) {
string os_contents_filename = contents_filename.to_os_specific();
TiXmlDocument doc(os_contents_filename.c_str());
if (!doc.LoadFile()) {
return false;
}
TiXmlElement *xcontents = doc.FirstChildElement("contents");
if (xcontents != NULL) {
// Look for the <host> entry; it might point us at a different
// download URL, and it might mention some mirrors.
find_host(xcontents);
// Now look for the core API package.
TiXmlElement *xpackage = xcontents->FirstChildElement("package");
while (xpackage != NULL) {
const char *name = xpackage->Attribute("name");
if (name != NULL && strcmp(name, "coreapi") == 0) {
const char *platform = xpackage->Attribute("platform");
if (platform != NULL && _this_platform == string(platform)) {
return get_core_api(contents_filename, xpackage);
}
}
xpackage = xpackage->NextSiblingElement("package");
}
}
// Couldn't find the coreapi package description.
nout << "No coreapi package defined in contents file for "
<< _this_platform << "\n";
return false;
}
////////////////////////////////////////////////////////////////////
// Function: Panda3D::find_host
// Access: Protected
// Description: Scans the <contents> element for the matching <host>
// element.
////////////////////////////////////////////////////////////////////
void Panda3D::
find_host(TiXmlElement *xcontents) {
TiXmlElement *xhost = xcontents->FirstChildElement("host");
if (xhost != NULL) {
const char *url = xhost->Attribute("url");
if (url != NULL && _host_url == string(url)) {
// We're the primary host. This is the normal case.
read_xhost(xhost);
return;
} else {
// We're not the primary host; perhaps we're an alternate host.
TiXmlElement *xalthost = xhost->FirstChildElement("alt_host");
while (xalthost != NULL) {
const char *url = xalthost->Attribute("url");
if (url != NULL && _host_url == string(url)) {
// Yep, we're this alternate host.
read_xhost(xhost);
return;
}
xalthost = xalthost->NextSiblingElement("alt_host");
}
}
// Hmm, didn't find the URL we used mentioned. Assume we're the
// primary host.
read_xhost(xhost);
}
}
////////////////////////////////////////////////////////////////////
// Function: Panda3D::read_xhost
// Access: Protected
// Description: Reads the host data from the <host> (or <alt_host>)
// entry in the contents.xml file.
////////////////////////////////////////////////////////////////////
void Panda3D::
read_xhost(TiXmlElement *xhost) {
// Get the "download" URL, which is the source from which we
// download everything other than the contents.xml file.
const char *download_url = xhost->Attribute("download_url");
if (download_url == NULL) {
download_url = xhost->Attribute("url");
}
if (download_url != NULL) {
_download_url_prefix = download_url;
} else {
_download_url_prefix = _host_url_prefix;
}
if (!_download_url_prefix.empty()) {
if (_download_url_prefix[_download_url_prefix.size() - 1] != '/') {
_download_url_prefix += "/";
}
}
TiXmlElement *xmirror = xhost->FirstChildElement("mirror");
while (xmirror != NULL) {
const char *url = xmirror->Attribute("url");
if (url != NULL) {
add_mirror(url);
}
xmirror = xmirror->NextSiblingElement("mirror");
}
}
////////////////////////////////////////////////////////////////////
// Function: Panda3D::add_mirror
// Access: Protected
// Description: Adds a new URL to serve as a mirror for this host.
// The mirrors will be consulted first, before
// consulting the host directly.
////////////////////////////////////////////////////////////////////
void Panda3D::
add_mirror(string mirror_url) {
// Ensure the URL ends in a slash.
if (!mirror_url.empty() && mirror_url[mirror_url.size() - 1] != '/') {
mirror_url += '/';
}
// Add it to the _mirrors list, but only if it's not already
// there.
if (find(_mirrors.begin(), _mirrors.end(), mirror_url) == _mirrors.end()) {
_mirrors.push_back(mirror_url);
}
}
////////////////////////////////////////////////////////////////////
// Function: Panda3D::choose_random_mirrors
// Access: Public
// Description: Selects num_mirrors elements, chosen at random, from
// the _mirrors list. Adds the selected mirrors to
// result. If there are fewer than num_mirrors elements
// in the list, adds only as many mirrors as we can get.
////////////////////////////////////////////////////////////////////
void Panda3D::
choose_random_mirrors(vector_string &result, int num_mirrors) {
pvector<size_t> selected;
size_t num_to_select = min(_mirrors.size(), (size_t)num_mirrors);
while (num_to_select > 0) {
size_t i = (size_t)(((double)rand() / (double)RAND_MAX) * _mirrors.size());
while (find(selected.begin(), selected.end(), i) != selected.end()) {
// Already found this i, find a new one.
i = (size_t)(((double)rand() / (double)RAND_MAX) * _mirrors.size());
}
selected.push_back(i);
result.push_back(_mirrors[i]);
--num_to_select;
}
}
////////////////////////////////////////////////////////////////////
// Function: Panda3D::get_core_api
// Access: Protected
// Description: Checks the core API DLL file against the
// specification in the contents file, and downloads it
// if necessary.
////////////////////////////////////////////////////////////////////
bool Panda3D::
get_core_api(const Filename &contents_filename, TiXmlElement *xpackage) {
_core_api_dll.load_xml(xpackage);
if (!_core_api_dll.quick_verify(_root_dir)) {
// The DLL file needs to be downloaded. Build up our list of
// URL's to attempt to download it from, in reverse order.
string url;
vector_string core_urls;
// Our last act of desperation: hit the original host, with a
// query uniquifier, to break through any caches.
ostringstream strm;
strm << _download_url_prefix << _core_api_dll.get_filename()
<< "?" << time(NULL);
url = strm.str();
core_urls.push_back(url);
// Before we try that, we'll hit the original host, without a
// uniquifier.
url = _download_url_prefix;
url += _core_api_dll.get_filename();
core_urls.push_back(url);
// And before we try that, we'll try two mirrors, at random.
vector_string mirrors;
choose_random_mirrors(mirrors, 2);
for (vector_string::iterator si = mirrors.begin();
si != mirrors.end();
++si) {
url = (*si) + _core_api_dll.get_filename();
core_urls.push_back(url);
}
// The very first thing we'll try is the super_mirror, if we have
// one.
if (!_super_mirror_url_prefix.empty()) {
url = _super_mirror_url_prefix + _core_api_dll.get_filename();
core_urls.push_back(url);
}
// Now pick URL's off the list, and try them, until we have
// success.
Filename pathname = Filename::from_os_specific(_core_api_dll.get_pathname(_root_dir));
pathname.make_dir();
HTTPClient *http = HTTPClient::get_global_ptr();
bool success = false;
while (!core_urls.empty()) {
url = core_urls.back();
core_urls.pop_back();
PT(HTTPChannel) channel = http->get_document(url);
if (!channel->download_to_file(pathname)) {
cerr << "Unable to download " << url << "\n";
} else if (!_core_api_dll.full_verify(_root_dir)) {
cerr << "Mismatched download for " << url << "\n";
} else {
// successfully downloaded!
success = true;
break;
}
}
if (!success) {
cerr << "Couldn't download core API.\n";
return false;
}
// Since we had to download some of it, might as well ask the core
// API to check all of it.
_verify_contents = true;
}
// Now we've got the DLL. Load it.
string pathname = _core_api_dll.get_pathname(_root_dir);
#ifdef P3D_PLUGIN_P3D_PLUGIN
// This is a convenience macro for development. If defined and
// nonempty, it indicates the name of the plugin DLL that we will
// actually run, even after downloading a possibly different
// (presumably older) version. Its purpose is to simplify iteration
// on the plugin DLL.
string override_filename = P3D_PLUGIN_P3D_PLUGIN;
if (!override_filename.empty()) {
pathname = override_filename;
}
#endif // P3D_PLUGIN_P3D_PLUGIN
bool trusted_environment = !_enable_security;
if (!load_plugin(pathname, contents_filename.to_os_specific(),
_host_url, _verify_contents, _this_platform, _log_dirname,
_log_basename, trusted_environment, _console_environment,
_root_dir, cerr)) {
cerr << "Unable to launch core API in " << pathname << "\n";
return false;
}
// Successfully loaded.
#ifdef PANDA_OFFICIAL_VERSION
static const bool official = true;
#else
static const bool official = false;
#endif
P3D_set_plugin_version_ptr(P3D_PLUGIN_MAJOR_VERSION, P3D_PLUGIN_MINOR_VERSION,
P3D_PLUGIN_SEQUENCE_VERSION, official,
PANDA_DISTRIBUTOR,
PANDA_PACKAGE_HOST_URL, _core_api_dll.get_timestamp());
return true;
}
////////////////////////////////////////////////////////////////////
// Function: Panda3D::usage
// Access: Protected
// Description: Reports the available command-line options.
////////////////////////////////////////////////////////////////////
void Panda3D::
usage() {
cerr
<< "\nThis is panda3d version "
<< P3D_PLUGIN_MAJOR_VERSION << "."
<< P3D_PLUGIN_MINOR_VERSION << "."
<< P3D_PLUGIN_SEQUENCE_VERSION;
#ifndef PANDA_OFFICIAL_VERSION
cerr << "c";
#endif
cerr
<< "\n\nUsage:\n"
<< " panda3d [opts] file.p3d [args]\n"
<< " panda3d -m [opts] file_a.p3d file_b.p3d [file_c.p3d ...]\n\n"
<< "This program is used to execute a Panda3D application bundle stored\n"
<< "in a .p3d file. In the first form, without the -m option, it\n"
<< "executes one application; remaining arguments following the\n"
<< "application name are passed into the application. In the second\n"
<< "form, with the -m option, it can execute multiple applications\n"
<< "simultaneously, though in this form arguments cannot be passed into\n"
<< "the applications.\n\n"
<< "Options:\n\n"
<< " -m\n"
<< " Indicates that multiple application filenames will be passed on\n"
<< " the command line. All applications will be run at the same\n"
<< " time, but additional arguments may not be passed to any of the\n"
<< " applictions.\n\n"
<< " -t token=value\n"
<< " Defines a web token or parameter to pass to the application(s).\n"
<< " This simulates a <param> entry in an <object> tag.\n\n"
<< " -w [toplevel|embedded|fullscreen|hidden]\n"
<< " Specify the type of graphic window to create. If you specify\n"
<< " \"embedded\", a new window is created to be the parent.\n\n"
<< " -s width,height\n"
<< " Specify the size of the graphic window.\n\n"
<< " -o x,y\n"
<< " Specify the position (origin) of the graphic window on the\n"
<< " screen, or on the parent window. If you specify -1,-1\n"
<< " the default position will be used, and a value of -2,-2\n"
<< " means that the window will be centered on the screen.\n\n"
<< " -l log_dirname\n"
<< " Specify the full path to the directory in which log files are\n"
<< " to be written. If this is not specified, the default is to send\n"
<< " the application output to the console.\n\n"
<< " -f\n"
<< " Force an initial contact of the Panda3D download server, to check\n"
<< " if a new version is available. Normally, this is done only\n"
<< " if contents.xml cannot be read.\n\n"
<< " -i\n"
<< " Runs the application interactively. This requires that the application\n"
<< " was built with -D on the packp3d command line. If so, this option will\n"
<< " create an interactive Python prompt after the application has loaded.\n"
<< " It will also retain the PYTHONPATH environment variable from the user's\n"
<< " environment, allowing Python files on disk to shadow the same-named\n"
<< " Python files within the p3d file, for rapid iteration on the Python\n"
<< " code.\n\n"
<< " -S\n"
<< " Runs the application with security enabled, as if it were embedded in\n"
<< " a web page.\n\n"
<< " -u url\n"
<< " Specify the URL of the Panda3D download server. This is the host\n"
<< " from which the plugin itself will be downloaded if necessary. The\n"
<< " default is \"" << PANDA_PACKAGE_HOST_URL << "\" .\n\n"
<< " -M super_mirror_url\n"
<< " Specifies the \"super mirror\" URL, the special URL that is consulted\n"
<< " first before downloading any package file referenced by a p3d file.\n"
<< " This is primarily intended to support pre-installing a downloadable\n"
<< " Panda3D tree on the local machine, to allow p3d applications to\n"
<< " execute without requiring an internet connection.\n\n"
<< " -p platform\n"
<< " Specify the platform to masquerade as. The default is \""
<< DTOOL_PLATFORM << "\" .\n\n"
<< " -V\n"
<< " Output only the plugin version string and exit immediately.\n\n"
<< " -U\n"
<< " Output only the plugin host URL and exit immediately.\n\n"
<< " -P\n"
<< " Output only the plugin platform string and exit immediately.\n\n";
}
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