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feat: static file server 

this lets you host web apps out of
:9993/app/{app_name}
:9993/app/{other_app}

from $ZT_HOME/app/{app_name}
pull/4/head
travisladuke 2 years ago
parent
6be0e67a5c
commit
b4eb39fb16
3 changed files with 124 additions and 5 deletions
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  1. 20
      README.md
  2. 9
      controller/EmbeddedNetworkController.cpp
  3. 100
      service/OneService.cpp

20
README.md
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@ -175,3 +175,23 @@ Metrics are also available on disk in ZeroTier's working directory:
| zt_peer_packet_errors | node_id | Counter | number of incoming packet errors from a peer |
If there are other metrics you'd like to see tracked, ask us in an Issue or send us a Pull Request!
### HTTP / App server
There is a static http file server suitable for hosting Single Page Apps at http://localhost:9993/app/<app-path>
Use `zerotier-cli info -j` to find your zerotier-one service's homeDir
``` sh
cd $ZT_HOME
sudo mkdir -p app/app1
sudo mkdir -p app/appB
echo '<html><meta charset=utf-8><title>appA</title><body><h1>hello world A' | sudo tee app/appA/index.html
echo '<html><meta charset=utf-8><title>app2</title><body><h1>hello world 2' | sudo tee app/app2/index.html
curl -sL http://localhost:9993/app/appA http://localhost:9993/app/app2
```
Then visit [http://localhost:9993/app/app1/](http://localhost:9993/app/app1/) and [http://localhost:9993/app/appB/](http://localhost:9993/app/appB/)
Requests to paths don't exist return the app root index.html, as is customary for SPAs.
If you want, you can write some javascript that talks to the service or controller [api](https://docs.zerotier.com/service/v1).

9
controller/EmbeddedNetworkController.cpp
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@ -876,6 +876,7 @@ void EmbeddedNetworkController::configureHTTPControlPlane(
std::string memberListPath2 = "/unstable/controller/network/([0-9a-fA-F]{16})/member";
std::string memberPath = "/controller/network/([0-9a-fA-F]{16})/member/([0-9a-fA-F]{10})";
auto controllerGet = [&, setContent](const httplib::Request &req, httplib::Response &res) {
char tmp[4096];
const bool dbOk = _db.isReady();
@ -887,11 +888,11 @@ void EmbeddedNetworkController::configureHTTPControlPlane(
(unsigned long long)OSUtils::now(),
dbOk ? "true" : "false");
if (!dbOk) {
res.status = 503;
}
if (!dbOk) {
res.status = 503;
}
setContent(req, res, tmp);
setContent(req, res, tmp);
};
s.Get(controllerPath, controllerGet);
sv6.Get(controllerPath, controllerGet);

100
service/OneService.cpp
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@ -796,6 +796,7 @@ public:
bool _allowTcpFallbackRelay;
bool _forceTcpRelay;
bool _allowSecondaryPort;
bool _enableWebServer;
unsigned int _primaryPort;
unsigned int _secondaryPort;
@ -1558,6 +1559,7 @@ public:
std::vector<std::string> noAuthEndpoints { "/sso", "/health" };
auto setContent = [=] (const httplib::Request &req, httplib::Response &res, std::string content) {
if (req.has_param("jsonp")) {
if (content.length() > 0) {
@ -1574,8 +1576,98 @@ public:
}
};
//
// static file server for app ui'
//
if (_enableWebServer) {
static std::string appUiPath = "/app";
static char appUiDir[16384];
sprintf(appUiDir,"%s%s",_homePath.c_str(),appUiPath.c_str());
auto ret = _controlPlane.set_mount_point(appUiPath, appUiDir);
_controlPlaneV6.set_mount_point(appUiPath, appUiDir);
if (!ret) {
fprintf(stderr, "Mounting app directory failed. Creating it. Path: %s - Dir: %s\n", appUiPath.c_str(), appUiDir);
if (!OSUtils::mkdir(appUiDir)) {
fprintf(stderr, "Could not create app directory either. Path: %s - Dir: %s\n", appUiPath.c_str(), appUiDir);
} else {
ret = _controlPlane.set_mount_point(appUiPath, appUiDir);
_controlPlaneV6.set_mount_point(appUiPath, appUiDir);
if (!ret) {
fprintf(stderr, "Really could not create and mount directory. Path: %s - Dir: %s\nWeb apps won't work.\n", appUiPath.c_str(), appUiDir);
}
}
}
if (ret) {
// fallback to /index.html for paths that don't exist for SPAs
auto indexFallbackGet = [](const httplib::Request &req, httplib::Response &res) {
// fprintf(stderr, "fallback \n");
auto match = req.matches[1];
if (match.matched) {
// fallback
char indexHtmlPath[16384];
sprintf(indexHtmlPath,"%s/%s/%s", appUiDir, match.str().c_str(), "index.html");
// fprintf(stderr, "fallback path %s\n", indexHtmlPath);
std::string indexHtml;
if (!OSUtils::readFile(indexHtmlPath, indexHtml)) {
res.status = 500;
return;
}
res.set_content(indexHtml.c_str(), "text/html");
} else {
res.status = 500;
return;
}
};
auto slashRedirect = [](const httplib::Request &req, httplib::Response &res) {
// fprintf(stderr, "redirect \n");
// add .html
std::string htmlFile;
char htmlPath[16384];
sprintf(htmlPath,"%s%s%s", appUiDir, (req.path).substr(appUiPath.length()).c_str(), ".html");
// fprintf(stderr, "path: %s\n", htmlPath);
if (OSUtils::readFile(htmlPath, htmlFile)) {
res.set_content(htmlFile.c_str(), "text/html");
return;
} else {
res.status = 301;
res.set_header("location", req.path + "/");
}
};
// auto missingAssetGet = [&, setContent](const httplib::Request &req, httplib::Response &res) {
// fprintf(stderr, "missing \n");
// res.status = 404;
// std::string html = "oops";
// res.set_content(html, "text/plain");
// res.set_header("Content-Type", "text/plain");
// return;
// };
// auto fix no trailing slash by adding .html or redirecting to path/
_controlPlane.Get(appUiPath + R"((/[\w|-]+)+$)", slashRedirect);
_controlPlaneV6.Get(appUiPath + R"((/[\w|-]+)+$)", slashRedirect);
auto authCheck = [=] (const httplib::Request &req, httplib::Response &res) {
// // 404 missing assets for *.ext paths
// s.Get(appUiPath + R"(/\.\w+$)", missingAssetGet);
// sv6.Get(appUiPath + R"(/\.\w+$)", missingAssetGet);
// fallback to index.html for unknown paths/files
_controlPlane.Get(appUiPath + R"((/[\w|-]+)(/[\w|-]+)*/$)", indexFallbackGet);
_controlPlaneV6.Get(appUiPath + R"((/[\w|-]+)(/[\w|-]+)*/$)", indexFallbackGet);
}
}
auto authCheck = [=] (const httplib::Request &req, httplib::Response &res) {
if (req.path == "/metrics") {
if (req.has_header("x-zt1-auth")) {
@ -1625,6 +1717,11 @@ public:
isAuth = true;
}
// Web Apps base path
if (req.path.rfind("/app", 0) == 0) { //starts with /app
isAuth = true;
}
if (!isAuth) {
// check auth token
if (req.has_header("x-zt1-auth")) {
@ -2452,6 +2549,7 @@ public:
}
_allowTcpFallbackRelay = (OSUtils::jsonBool(settings["allowTcpFallbackRelay"],true) && !_node->bondController()->inUse());
_forceTcpRelay = (_forceTcpRelayTmp && !_node->bondController()->inUse());
_enableWebServer = (OSUtils::jsonBool(settings["enableWebServer"],false));
#ifdef ZT_TCP_FALLBACK_RELAY
_fallbackRelayAddress = InetAddress(OSUtils::jsonString(settings["tcpFallbackRelay"], ZT_TCP_FALLBACK_RELAY).c_str());

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