storage works

contrib/backends/nntpchan-daemon/daemon/main.cpp

@@ -22,6 +22,7 @@ int main(int argc, char * argv[]) {
 
   nntpchan::NNTPServer nntp(loop);
 
+
   std::string fname(argv[1]);
 
   std::ifstream i(fname);
@@ -29,7 +30,7 @@ int main(int argc, char * argv[]) {
   if(i.is_open()) {
     INI::Parser conf(i);
 
-    std::vector<std::string> requiredSections = {"nntp", "storage"};
+    std::vector<std::string> requiredSections = {"nntp", "articles"};
 
     auto & level = conf.top();
 
@@ -41,14 +42,14 @@ int main(int argc, char * argv[]) {
       }
     }
 
-    auto & storeconf = level.sections["storage"].values;
+    auto & storeconf = level.sections["articles"].values;
 
-    if (storeconf.find("path") == storeconf.end()) {
+    if (storeconf.find("store_path") == storeconf.end()) {
-      std::cerr << "storage section does not have 'path' value" << std::endl;
+      std::cerr << "storage section does not have 'store_path' value" << std::endl;
       return 1;
     }
 
-    nntp.SetStoragePath(storeconf["path"]);
+    nntp.SetStoragePath(storeconf["store_path"]);
 
     auto & nntpconf = level.sections["nntp"].values;
 
@@ -57,6 +58,13 @@ int main(int argc, char * argv[]) {
       return 1;
     }
 
+    if(nntpconf.find("instance_name") == nntpconf.end()) {
+      std::cerr << "nntp section lacks 'instance_name' value" << std::endl;
+      return 1;
+    }
+
+    nntp.SetInstanceName(nntpconf["instance_name"]);
+
     if (nntpconf.find("authdb") != nntpconf.end()) {
       nntp.SetLoginDB(nntpconf["authdb"]);
     }
@@ -77,6 +85,7 @@ int main(int argc, char * argv[]) {
         nntp.SetFrontend(new nntpchan::ExecFrontend(frontconf["exec"]));
       } else {
         std::cerr << "unknown frontend type '" << ftype << "'" << std::endl;
+        return 1;
       }
 
     }
@@ -90,9 +99,9 @@ int main(int argc, char * argv[]) {
       return 1;
     }
 
-    std::cerr << "run mainloop" << std::endl;
+    std::cerr << "nntpd for " << nntp.InstanceName() << " bound to " << a << std::endl;
+
     loop.Run();
-    std::cerr << "stopped mainloop" << std::endl;
 
   } else {
     std::cerr << "failed to open " << fname << std::endl;

contrib/backends/nntpchan-daemon/nntpchan.ini

@@ -1,6 +1,7 @@
 [nntp]
+instance_name=nntp.server.tld
 bind=[::]:1199
 authdb=auth.txt
 
-[storage]
+[articles]
-path = ./storage/
+store_path=./storage/

contrib/backends/nntpchan-daemon/src/line.cpp

@@ -15,16 +15,21 @@ namespace nntpchan {
       return;
     }
     std::size_t idx = 0;
+    std::size_t pos = 0;
     ssize_t begin = l;
     const char * data = current.c_str();
     while(l-- > 0) {
       char c = data[idx++];
       if(c == '\n') {
-        OnLine(data, idx-1);
+        OnLine(data, pos);
+        pos = 0;
         data += idx;
       } else if (c == '\r' && data[idx] == '\n') {
-        OnLine(data, idx-1);
+        OnLine(data, pos);
         data += idx + 1;
+        pos = 0;
+      } else {
+        pos ++;
       }
     }
     if (idx < begin)

contrib/backends/nntpchan-daemon/src/message.cpp

@@ -2,13 +2,12 @@
 
 namespace nntpchan
 {
-  bool IsValidMessageID(const MessageID & msgid)
+  bool IsValidMessageID(const std::string & msgid)
   {
-    auto itr = msgid.begin();
+    if(msgid[0] != '<') return false;
-    auto end = msgid.end();
+    if(msgid[msgid.size()-1] != '>') return false;
-    --end;
+    auto itr = msgid.begin() + 1;
-    if (*itr != '<') return false;
+    auto end = msgid.end() - 1;
-    if (*end != '>') return false;
     bool atfound = false;
     while(itr != end) {
       auto c = *itr;
@@ -18,10 +17,10 @@ namespace nntpchan
         atfound = true;
         continue;
       }
-      if (c == '$' || c == '_' || c == '-') continue;
+      if (c == '$' || c == '_' || c == '-' || c == '.') continue;
-      if (c > '0' && c < '9') continue;
+      if (c >= '0' && c <= '9') continue;
-      if (c > 'A' && c < 'Z') continue;
+      if (c >= 'A' && c <= 'Z') continue;
-      if (c > 'a' && c < 'z') continue;
+      if (c >= 'a' && c <= 'z') continue;
       return false;
     }
     return true;

contrib/backends/nntpchan-daemon/src/message.hpp

@@ -8,9 +8,7 @@
 
 namespace nntpchan
 {
-  typedef std::string MessageID;
+  bool IsValidMessageID(const std::string & msgid);
-
-  bool IsValidMessageID(const MessageID & msgid);
 
   typedef std::pair<std::string, std::string> MessageHeader;
 

contrib/backends/nntpchan-daemon/src/nntp_handler.cpp

@@ -1,6 +1,8 @@
 #include "nntp_handler.hpp"
+#include "message.hpp"
 #include <algorithm>
 #include <cctype>
+#include <cstring>
 #include <string>
 #include <sstream>
 #include <iostream>
@@ -9,6 +11,7 @@ namespace nntpchan
 {
   NNTPServerHandler::NNTPServerHandler(const std::string & storage) :
     LineReader(1024),
+    m_article(nullptr),
     m_auth(nullptr),
     m_store(storage),
     m_authed(false),
@@ -23,7 +26,8 @@ namespace nntpchan
 
   void NNTPServerHandler::HandleLine(const std::string &line)
   {
-    if(m_state == eStateReadCommand) {
+    if(m_state == eStateReadCommand)
+    {
       std::deque<std::string> command;
       std::istringstream s;
       s.str(line);
@@ -35,10 +39,51 @@ namespace nntpchan
       else
         QueueLine("501 Syntax error");
     }
+    else if(m_state == eStateStoreArticle)
+    {
+      OnData(line.c_str(), line.size());
+      OnData("\n", 1);
+    }
+    else
+    {
+      std::cerr << "invalid state" << std::endl;
+    }
   }
 
   void NNTPServerHandler::OnData(const char * data, ssize_t l)
   {
+    if(l <= 0 ) return;
+    if(m_state == eStateStoreArticle)
+    {
+      const char * end = strstr(data, "\n.\n");
+      if(end)
+      {
+        std::size_t diff = end - data ;
+        std::cerr << diff << std::endl;
+        if(m_article)
+          m_article->write(data, diff);
+        ArticleObtained();
+        diff += 3;
+        OnData(end+3, l-diff);
+        return;
+      }
+      end = strstr(data, "\r\n.\r\n");
+      if(end)
+      {
+        std::size_t diff = end - data ;
+        std::cerr << diff << std::endl;
+        if(m_article)
+          m_article->write(data, diff);
+        ArticleObtained();
+        diff += 5;
+        OnData(end+5, l-diff);
+        return;
+        return;
+      }
+      if(m_article)
+        m_article->write(data, l);
+    }
+    else
       Data(data, l);
   }
 
@@ -47,11 +92,18 @@ namespace nntpchan
     auto cmd = command[0];
     std::transform(cmd.begin(), cmd.end(), cmd.begin(), ::toupper);
     std::size_t cmdlen = command.size();
-    std::cerr << "handle command [" << cmd << "] " << (int) cmdlen << std::endl;
+    for(const auto & part : command)
+      std::cerr << " " << part;
+    std::cerr << std::endl;
     if (cmd == "QUIT") {
       Quit();
       return;
-    } else if (cmd == "MODE" ) {
+    }
+    else if (cmd[0] == '5')
+    {
+        return;
+    }
+    else if (cmd == "MODE" ) {
       if(cmdlen == 2) {
         // set mode
         SwitchMode(command[1]);
@@ -62,12 +114,61 @@ namespace nntpchan
         // get mode
         QueueLine("500 wrong arguments");
       }
+    } else if(cmd == "CAPABILITIES") {
+      QueueLine("101 I support the following:");
+      QueueLine("READER");
+      QueueLine("IMPLEMENTATION nntpchan-daemon");
+      QueueLine("VERSION 2");
+      QueueLine("STREAMING");
+      QueueLine(".");
+    } else if (cmd == "CHECK") {
+      if(cmdlen == 2) {
+        const std::string & msgid = command[1];
+        if(IsValidMessageID(msgid) && m_store.Accept(msgid))
+        {
+          QueueLine("238 "+msgid);
+          return;
+        }
+        QueueLine("438 "+msgid);
+      }
+      else
+        QueueLine("501 syntax error");
+    } else if (cmd == "TAKETHIS") {
+      if (cmdlen == 2)
+      {
+        const std::string & msgid = command[1];
+        if(m_store.Accept(msgid))
+        {
+          m_article = m_store.OpenWrite(msgid);
+        }
+        m_articleName = msgid;
+        EnterState(eStateStoreArticle);
+        return;
+      }
+      QueueLine("501 invalid syntax");
     } else {
       // unknown command
       QueueLine("500 Unknown Command");
     }
   }
 
+  void NNTPServerHandler::ArticleObtained()
+  {
+    if(m_article)
+    {
+      m_article->flush();
+      m_article->close();
+      delete m_article;
+      m_article = nullptr;
+      QueueLine("239 "+m_articleName);
+      std::cerr << "stored " << m_articleName << std::endl;
+    }
+    else
+      QueueLine("439 "+m_articleName);
+    m_articleName = "";
+    EnterState(eStateReadCommand);
+  }
+
   void NNTPServerHandler::SwitchMode(const std::string & mode)
   {
     std::string m = mode;
@@ -92,10 +193,15 @@ namespace nntpchan
     }
   }
 
+  void NNTPServerHandler::EnterState(State st)
+  {
+    std::cerr << "enter state " << st << std::endl;
+    m_state = st;
+  }
+
   void NNTPServerHandler::Quit()
   {
-    std::cerr << "quitting" << std::endl;
+    EnterState(eStateQuit);
-    m_state = eStateQuit;
     QueueLine("205 quitting");
   }
 

contrib/backends/nntpchan-daemon/src/nntp_handler.hpp

@@ -34,6 +34,11 @@ namespace nntpchan
     };
 
   private:
+
+    void EnterState(State st);
+
+    void ArticleObtained();
+
     // handle quit command, this queues a reply
     void Quit();
 
@@ -43,6 +48,8 @@ namespace nntpchan
     bool PostingAllowed();
 
   private:
+    std::string m_articleName;
+    std::fstream * m_article;
     NNTPCredentialDB * m_auth;
     ArticleStorage m_store;
     std::string m_mode;

contrib/backends/nntpchan-daemon/src/nntp_server.cpp

@@ -44,6 +44,16 @@ namespace nntpchan
     m_storagePath = path;
   }
 
+  void NNTPServer::SetInstanceName(const std::string & name)
+  {
+    m_servername = name;
+  }
+
+  std::string NNTPServer::InstanceName() const
+  {
+    return m_servername;
+  }
+
   void NNTPServer::SetFrontend(Frontend * f)
   {
     if(m_frontend) delete m_frontend;

contrib/backends/nntpchan-daemon/src/nntp_server.hpp

@@ -21,6 +21,10 @@ namespace nntpchan
 
     void SetLoginDB(const std::string path);
 
+    void SetInstanceName(const std::string & name);
+
+    std::string InstanceName() const;
+
     void SetFrontend(Frontend * f);
 
     void Close();
@@ -33,6 +37,7 @@ namespace nntpchan
 
     std::string m_logindbpath;
     std::string m_storagePath;
+    std::string m_servername;
 
     Frontend * m_frontend;
 

contrib/backends/nntpchan-daemon/src/server.cpp

@@ -40,7 +40,6 @@ namespace nntpchan
       OnAcceptError(status);
       return;
     }
-    std::cout << "new conn" << std::endl;
     IServerConn * conn = CreateConn(s);
     assert(conn);
     m_conns.push_back(conn);
@@ -96,7 +95,6 @@ namespace nntpchan
         IServerConn * self = (IServerConn*) s->data;
         if(self == nullptr) return;
         if(nread > 0) {
-          std::cout << "read " << nread << std::endl;
           self->m_handler->OnData(b->base, nread);
           self->SendNextReply();
           if(self->m_handler->ShouldClose())

contrib/backends/nntpchan-daemon/src/storage.cpp

@@ -25,18 +25,31 @@ namespace nntpchan
     mkdir(basedir.c_str(), 0700);
   }
 
-  bool ArticleStorage::Accept(const MessageID & msgid)
+  bool ArticleStorage::Accept(const std::string& msgid)
   {
     if (!IsValidMessageID(msgid)) return false;
-    std::stringstream ss;
+    auto s = MessagePath(msgid);
-    ss << basedir << GetPathSep() << msgid;
-    auto s = ss.str();
     FILE * f = fopen(s.c_str(), "r");
     if ( f == nullptr) return errno == ENOENT;
     fclose(f);
     return false;
   }
 
+  std::string ArticleStorage::MessagePath(const std::string & msgid)
+  {
+    return basedir + GetPathSep() + msgid;
+  }
+
+  std::fstream * ArticleStorage::OpenRead(const std::string & msgid)
+  {
+    return OpenMode(msgid, std::ios::in);
+  }
+
+  std::fstream * ArticleStorage::OpenWrite(const std::string & msgid)
+  {
+    return OpenMode(msgid, std::ios::out);
+  }
+
   char ArticleStorage::GetPathSep()
   {
     return '/';

contrib/backends/nntpchan-daemon/src/storage.hpp

@@ -1,6 +1,7 @@
 #ifndef NNTPCHAN_STORAGE_HPP
 #define NNTPCHAN_STORAGE_HPP
 
+#include <fstream>
 #include <string>
 #include "message.hpp"
 
@@ -15,16 +16,34 @@ namespace nntpchan
 
     void SetPath(const std::string & fpath);
 
-    std::ostream & OpenWrite(const MessageID & msgid);
+    std::fstream * OpenWrite(const std::string & msgid);
-    std::istream & OpenRead(const MessageID & msgid);
+    std::fstream * OpenRead(const std::string & msgid);
 
     /**
        return true if we should accept a new message give its message id
      */
-    bool Accept(const MessageID & msgid);
+    bool Accept(const std::string & msgid);
 
   private:
 
+    template<typename Mode>
+    std::fstream * OpenMode(const std::string & msgid, const Mode & m)
+    {
+      if(IsValidMessageID(msgid))
+      {
+        std::fstream * f = new std::fstream;
+        f->open(MessagePath(msgid), m);
+        if(f->is_open())
+          return f;
+        delete f;
+        return nullptr;
+      }
+      else
+        return nullptr;
+    };
+
+    std::string MessagePath(const std::string & msgid);
+
     static char GetPathSep();
 
     std::string basedir;

contrib/backends/nntpchan-daemon/tools/testtool.cpp

@@ -1,4 +1,5 @@
 #include "exec_frontend.hpp"
+#include "message.hpp"
 #include <cassert>
 #include <iostream>
 
@@ -7,7 +8,7 @@
 int main(int , char * [])
 {
   nntpchan::Frontend * f = new nntpchan::ExecFrontend("./contrib/nntpchan.sh");
-  assert(f->AcceptsMessage("<test@server>"));
+  assert(nntpchan::IsValidMessageID("<a28a71493831188@web.oniichan.onion>"));
   assert(f->AcceptsNewsgroup("overchan.test"));
   std::cout << "all good" << std::endl;
 }