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-rw-r--r--src/modules/m_httpd.cpp311
1 files changed, 201 insertions, 110 deletions
diff --git a/src/modules/m_httpd.cpp b/src/modules/m_httpd.cpp
index f96182103..a06098a0e 100644
--- a/src/modules/m_httpd.cpp
+++ b/src/modules/m_httpd.cpp
@@ -17,6 +17,7 @@
#include "httpd.h"
/* $ModDesc: Provides HTTP serving facilities to modules */
+/* $ModDep: httpd.h */
class ModuleHttpServer;
@@ -28,9 +29,9 @@ static bool claimed;
enum HttpState
{
HTTP_LISTEN = 0,
- HTTP_SERVE_WAIT_REQUEST = 1,
- HTTP_SERVE_RECV_POSTDATA = 2,
- HTTP_SERVE_SEND_DATA = 3
+ HTTP_SERVE_WAIT_REQUEST = 1, /* Waiting for a full request */
+ HTTP_SERVE_RECV_POSTDATA = 2, /* Waiting to finish recieving POST data */
+ HTTP_SERVE_SEND_DATA = 3 /* Sending response */
};
class HttpServerSocket;
@@ -61,13 +62,18 @@ class HttpServerSocket : public InspSocket
{
FileReader* index;
HttpState InternalState;
- std::stringstream headers;
+
+ HTTPHeaders headers;
+ std::string reqbuffer;
std::string postdata;
+ unsigned int postsize;
std::string request_type;
std::string uri;
std::string http_version;
- unsigned int postsize;
+ bool keepalive;
+
HttpServerTimeout* Timeout;
+ bool DataSinceLastTick;
friend class HttpServerTimeout;
public:
@@ -78,7 +84,7 @@ class HttpServerSocket : public InspSocket
Timeout = NULL;
}
- HttpServerSocket(InspIRCd* SI, int newfd, char* ip, FileReader* ind) : InspSocket(SI, newfd, ip), index(ind), postsize(0)
+ HttpServerSocket(InspIRCd* SI, int newfd, char* ip, FileReader* ind) : InspSocket(SI, newfd, ip), index(ind), postsize(0), keepalive(false), DataSinceLastTick(false)
{
InternalState = HTTP_SERVE_WAIT_REQUEST;
Timeout = new HttpServerTimeout(this, Instance->SE);
@@ -99,7 +105,21 @@ class HttpServerSocket : public InspSocket
Timeout = NULL;
}
}
-
+
+ void ResetRequest()
+ {
+ headers.Clear();
+ postdata.clear();
+ postsize = 0;
+ request_type.clear();
+ uri.clear();
+ http_version.clear();
+ InternalState = HTTP_SERVE_WAIT_REQUEST;
+
+ if (reqbuffer.size())
+ CheckRequestBuffer();
+ }
+
virtual int OnIncomingConnection(int newsock, char* ip)
{
if (InternalState == HTTP_LISTEN)
@@ -203,22 +223,51 @@ class HttpServerSocket : public InspSocket
}
}
-
- void SendHeaders(unsigned long size, int response, const std::string &extraheaders)
+
+ void SendHTTPError(int response)
+ {
+ HTTPHeaders empty;
+ std::string data = "<html><head></head><body>Server error "+ConvToStr(response)+": "+Response(response)+"<br>"+
+ "<small>Powered by <a href='http://www.inspircd.org'>InspIRCd</a></small></body></html>";
+
+ SendHeaders(data.length(), response, empty);
+ this->Write(data);
+
+ if (keepalive)
+ ResetRequest();
+ }
+
+ void SendHeaders(unsigned long size, int response, HTTPHeaders &rheaders)
{
+
+ this->Write(http_version + " "+ConvToStr(response)+" "+Response(response)+"\r\n");
+
time_t local = this->Instance->Time();
struct tm *timeinfo = gmtime(&local);
- this->Write("HTTP/1.1 "+ConvToStr(response)+" "+Response(response)+"\r\nDate: ");
- this->Write(asctime(timeinfo));
- if (extraheaders.empty())
- this->Write("Content-Type: text/html\r\n");
+ char *date = asctime(timeinfo);
+ date[strlen(date) - 1] = '\0';
+ rheaders.CreateHeader("Date", date);
+
+ rheaders.CreateHeader("Server", "InspIRCd/m_httpd.so/1.1");
+ rheaders.SetHeader("Content-Length", ConvToStr(size));
+
+ if (size)
+ rheaders.CreateHeader("Content-Type", "text/html");
else
- this->Write(extraheaders);
- this->Write("Server: InspIRCd/m_httpd.so/1.1\r\nContent-Length: "+ConvToStr(size)+
- "\r\nConnection: close\r\n\r\n");
- if (response != 200)
- this->Write("<html><head></head><body>Server error "+ConvToStr(response)+": "+Response(response)+"<br>"+
- "<small>Powered by <a href='http://www.inspircd.org'>InspIRCd</a></small></body></html>\r\n");
+ rheaders.RemoveHeader("Content-Type");
+
+ if (rheaders.GetHeader("Connection") == "Close")
+ keepalive = false;
+ else if (rheaders.GetHeader("Connection") == "Keep-Alive" && !headers.IsSet("Connection"))
+ keepalive = true;
+ else if (!rheaders.IsSet("Connection") && !keepalive)
+ rheaders.SetHeader("Connection", "Close");
+
+ this->Write(rheaders.GetFormattedHeaders());
+ this->Write("\r\n");
+
+ if (!size && keepalive)
+ ResetRequest();
}
virtual bool OnDataReady()
@@ -226,124 +275,170 @@ class HttpServerSocket : public InspSocket
char* data = this->Read();
/* Check that the data read is a valid pointer and it has some content */
- if (data && *data)
+ if (!data || !*data)
+ return false;
+
+ DataSinceLastTick = true;
+
+ if (InternalState == HTTP_SERVE_RECV_POSTDATA)
{
- headers << data;
-
- if (headers.str().find("\r\n\r\n") != std::string::npos)
+ postdata.append(data);
+ if (postdata.length() >= postsize)
+ ServeData();
+ }
+ else
+ {
+ reqbuffer.append(data);
+
+ if (reqbuffer.length() >= 8192)
{
- if (request_type.empty())
- {
- headers >> request_type;
- headers >> uri;
- headers >> http_version;
-
- std::transform(request_type.begin(), request_type.end(), request_type.begin(), ::toupper);
- std::transform(http_version.begin(), http_version.end(), http_version.begin(), ::toupper);
- }
-
- if ((InternalState == HTTP_SERVE_WAIT_REQUEST) && (request_type == "POST"))
- {
- /* Do we need to fetch postdata? */
- postdata.clear();
- InternalState = HTTP_SERVE_RECV_POSTDATA;
- std::string header_item;
- while (headers >> header_item)
- {
- if (header_item == "Content-Length:")
- {
- headers >> header_item;
- postsize = atoi(header_item.c_str());
- }
- }
- if (!postsize)
- {
- InternalState = HTTP_SERVE_SEND_DATA;
- SendHeaders(0, 400, "");
- Timeout = new HttpServerTimeout(this, Instance->SE);
- Instance->Timers->AddTimer(Timeout);
- }
- else
- {
- std::string::size_type x = headers.str().find("\r\n\r\n");
- postdata = headers.str().substr(x+4, headers.str().length());
- /* Get content length and store */
- if (postdata.length() >= postsize)
- ServeData();
- }
- }
- else if (InternalState == HTTP_SERVE_RECV_POSTDATA)
- {
- /* Add postdata, once we have it all, send the event */
- postdata.append(data);
- if (postdata.length() >= postsize)
- ServeData();
- }
- else
+ Instance->Log(DEBUG, "m_httpd dropped connection due to an oversized request buffer");
+ reqbuffer.clear();
+ return false;
+ }
+
+ if (InternalState == HTTP_SERVE_WAIT_REQUEST)
+ CheckRequestBuffer();
+ }
+
+ return true;
+ }
+
+ void CheckRequestBuffer()
+ {
+ std::string::size_type reqend = reqbuffer.find("\r\n\r\n");
+ if (reqend == std::string::npos)
+ return;
+
+ // We have the headers; parse them all
+ std::string::size_type hbegin = 0, hend;
+ while ((hend = reqbuffer.find("\r\n", hbegin)) != std::string::npos)
+ {
+ if (hbegin == hend)
+ break;
+
+ if (request_type.empty())
+ {
+ std::istringstream cheader(std::string(reqbuffer, hbegin, hend - hbegin));
+ cheader >> request_type;
+ cheader >> uri;
+ cheader >> http_version;
+
+ if (request_type.empty() || uri.empty() || http_version.empty())
{
- ServeData();
+ SendHTTPError(400);
+ return;
}
- return true;
+
+ hbegin = hend + 2;
+ continue;
+ }
+
+ std::string cheader = reqbuffer.substr(hbegin, hend - hbegin);
+
+ std::string::size_type fieldsep = cheader.find(':');
+ if ((fieldsep == std::string::npos) || (fieldsep == 0) || (fieldsep == cheader.length() - 1))
+ {
+ SendHTTPError(400);
+ return;
}
- return true;
+
+ headers.SetHeader(cheader.substr(0, fieldsep), cheader.substr(fieldsep + 2));
+
+ hbegin = hend + 2;
}
- else
+
+ reqbuffer.erase(0, reqend + 4);
+
+ std::transform(request_type.begin(), request_type.end(), request_type.begin(), ::toupper);
+ std::transform(http_version.begin(), http_version.end(), http_version.begin(), ::toupper);
+
+ if ((http_version != "HTTP/1.1") && (http_version != "HTTP/1.0"))
{
- return false;
+ SendHTTPError(505);
+ return;
+ }
+
+ if (strcasecmp(headers.GetHeader("Connection").c_str(), "keep-alive") == 0)
+ keepalive = true;
+
+ if (headers.IsSet("Content-Length") && (postsize = atoi(headers.GetHeader("Content-Length").c_str())) != 0)
+ {
+ InternalState = HTTP_SERVE_RECV_POSTDATA;
+
+ if (reqbuffer.length() >= postsize)
+ {
+ postdata = reqbuffer.substr(0, postsize);
+ reqbuffer.erase(0, postsize);
+ }
+ else if (!reqbuffer.empty())
+ {
+ postdata = reqbuffer;
+ reqbuffer.clear();
+ }
+
+ if (postdata.length() >= postsize)
+ ServeData();
+
+ return;
}
+
+ ServeData();
}
void ServeData()
{
- /* Headers are complete */
InternalState = HTTP_SERVE_SEND_DATA;
- Instance->Timers->DelTimer(Timeout);
- Timeout = NULL;
-
- if ((http_version != "HTTP/1.1") && (http_version != "HTTP/1.0"))
+ if ((request_type == "GET") && (uri == "/"))
{
- SendHeaders(0, 505, "");
+ HTTPHeaders empty;
+ SendHeaders(index->ContentSize(), 200, empty);
+ this->Write(index->Contents());
}
else
{
- if ((request_type == "GET") && (uri == "/"))
+ claimed = false;
+ HTTPRequest httpr(request_type,uri,&headers,this,this->GetIP(),postdata);
+ Event e((char*)&httpr, (Module*)HttpModule, "httpd_url");
+ e.Send(this->Instance);
+ if (!claimed)
{
- SendHeaders(index->ContentSize(), 200, "");
- this->Write(index->Contents());
- }
- else
- {
- claimed = false;
- HTTPRequest httpr(request_type,uri,&headers,this,this->GetIP(),postdata);
- Event e((char*)&httpr, (Module*)HttpModule, "httpd_url");
- e.Send(this->Instance);
- if (!claimed)
- {
- SendHeaders(0, 404, "");
- }
+ SendHTTPError(404);
}
}
- Timeout = new HttpServerTimeout(this, Instance->SE);
- Instance->Timers->AddTimer(Timeout);
}
- void Page(std::stringstream* n, int response, std::string& extraheaders)
+ void Page(std::stringstream* n, int response, HTTPHeaders *headers)
{
- SendHeaders(n->str().length(), response, extraheaders);
+ SendHeaders(n->str().length(), response, *headers);
this->Write(n->str());
+
+ if (!keepalive)
+ {
+ Instance->SE->DelFd(this);
+ this->Close();
+ }
+ else
+ this->ResetRequest();
}
};
-HttpServerTimeout::HttpServerTimeout(HttpServerSocket* sock, SocketEngine* engine) : InspTimer(60, time(NULL)), s(sock), SE(engine)
+HttpServerTimeout::HttpServerTimeout(HttpServerSocket* sock, SocketEngine* engine) : InspTimer(15, time(NULL), true), s(sock), SE(engine)
{
}
void HttpServerTimeout::Tick(time_t TIME)
{
- SE->DelFd(s);
- s->Close();
- s->Timeout = NULL;
+ if (!s->DataSinceLastTick)
+ {
+ SE->DelFd(s);
+ s->Close();
+ s->Timeout = NULL;
+ this->CancelRepeat();
+ }
+ else
+ s->DataSinceLastTick = false;
}
class ModuleHttpServer : public Module
@@ -383,22 +478,18 @@ class ModuleHttpServer : public Module
HttpModule = this;
}
- void OnEvent(Event* event)
- {
- }
-
char* OnRequest(Request* request)
{
claimed = true;
HTTPDocument* doc = (HTTPDocument*)request->GetData();
HttpServerSocket* sock = (HttpServerSocket*)doc->sock;
- sock->Page(doc->GetDocument(), doc->GetResponseCode(), doc->GetExtraHeaders());
+ sock->Page(doc->GetDocument(), doc->GetResponseCode(), &doc->headers);
return NULL;
}
void Implements(char* List)
{
- List[I_OnEvent] = List[I_OnRequest] = 1;
+ List[I_OnRequest] = 1;
}
virtual ~ModuleHttpServer()
generated by cgit v1.2.3 (git 2.39.1) at 2024-10-19 11:27:56 +0000