From 1782d12938ba89b67a52677d162d4c865f00cbe0 Mon Sep 17 00:00:00 2001
From: deva <deva>
Date: Tue, 3 Nov 2009 13:49:15 +0000
Subject: First working, but not in any way optimal implementation of a http
 transport layer.

---
 server/src/server.cc | 109 +++++++++++++++++++++++++++++----------------------
 1 file changed, 63 insertions(+), 46 deletions(-)

(limited to 'server')

diff --git a/server/src/server.cc b/server/src/server.cc
index f2be8a4..9d3caba 100644
--- a/server/src/server.cc
+++ b/server/src/server.cc
@@ -36,6 +36,8 @@
 #include <unistd.h>
 #include <string.h>
 
+#include <microhttpd.h>
+
 #include "configuration.h"
 #include "transaction.h"
 #include "transactionparser.h"
@@ -294,8 +296,11 @@ static std::string handleTransaction(Transaction *transaction,
 }
 
 
-static void handleConnection(TCPSocket *socket)
+static std::string handleConnection(char *buf, size_t size)
 {
+  if(size == 0) 
+    return error_box(xml_encode("Empty document received."));
+
   TCPSocket pentominos_socket;
 #ifndef WITHOUT_PENTOMINOS
   pentominos_socket.connect(Conf::pentominos_addr, Conf::pentominos_port);
@@ -308,63 +313,75 @@ static void handleConnection(TCPSocket *socket)
   MacroList macrolist(Conf::xml_basedir + "/macros");
   TemplateList templatelist(Conf::xml_basedir + "/templates");
 
-  ssize_t size;
-  char buf[4096];
+  Transaction transaction;
+  TransactionParser parser(&transaction);
   
-  Transaction *transaction = NULL;
-  TransactionParser *parser = NULL;
-  
-  //  while( (size = socket->read(buf, sizeof(buf))) != -1) {
-  while( (size = socket->read(buf, sizeof(buf))) > 0) {
+  PRACRO_DEBUG(server, "Read %d bytes from network\n", size);
 
-    PRACRO_DEBUG(server, "Read %d bytes from network\n", size);
-   
-    while(size) {
+  if(parser.parse(buf, size)) {
+    PRACRO_DEBUG(server, "Got complete XML document, %d bytes in current buffer.\n", size);
 
-      if(transaction == NULL) {
-        transaction = new Transaction();
-      }
+    std::string res = handleTransaction(&transaction, pentominos_socket,
+                                        db, journalwriter, macrolist, templatelist);
+    journalwriter.commit();
 
-      if(parser == NULL) {
-        parser = new TransactionParser(transaction);
-      }
+    return res;
+  }
+
+  PRACRO_ERR(server, "Failed to parse data!\n");
+  return error_box(xml_encode("XML Parse error."));
+}
 
-      PRACRO_DEBUG(server, "Got %d bytes in read loop\n", size);
-      if(parser->parse(buf, size)) {
-        PRACRO_DEBUG(server, "Got complete XML document %d bytes used, %d bytes in current buffer.\n", parser->usedBytes(), size);
+static int handle_request(void *cls,
+                          struct MHD_Connection *con,
+                          const char *url,
+                          const char *method,
+                          const char *version,
+                          const char *data,
+                          unsigned int *data_size,
+                          void **ptr)
+{
+  PRACRO_DEBUG(httpd, "handle_request(url=\"%s\", method=\"%s\", version=\"%s\", data_size=\"%d\")\n",
+              url, method, version, *data_size);
 
-        socket->write(handleTransaction(transaction, pentominos_socket,
-                                        db, journalwriter, macrolist, templatelist));
-        size = size - parser->usedBytes();
-        if(size) {
-          strcpy(buf, buf + parser->usedBytes());
-          PRACRO_DEBUG(server, "Replaying %d bytes.\n", size);
-        }
+  std::string reply = handleConnection((char*)data, *data_size);
+  
+  struct MHD_Response *rsp;
+  rsp = MHD_create_response_from_data(reply.length(), (char*)reply.c_str(), MHD_NO, MHD_YES);
+  MHD_add_response_header(rsp, MHD_HTTP_HEADER_CONTENT_TYPE, "text/plain; charset=UTF-8");
+  int ret = MHD_queue_response(con, MHD_HTTP_OK, rsp);
+  MHD_destroy_response(rsp);
         
-        delete transaction; transaction = NULL;
-        delete parser; parser = NULL;
-      } else {
-        size = 0;
-        memset(buf, 0, sizeof(buf));
-      }
-    }
-  }
+  return ret;
+}
 
-  if(transaction) {
-    delete transaction;
-    transaction = NULL;
-  }
+extern bool pracro_is_running;
+void server()
+{
+  port_t port = Conf::server_port;
 
-  if(parser) {
-    delete parser;
-    parser = NULL;
-  }
+  PRACRO_DEBUG(server, "Server running on port %d.\n", port);
+
+  struct MHD_Daemon *d;
+  d = MHD_start_daemon(MHD_USE_DEBUG |  MHD_USE_SELECT_INTERNALLY,
+                       port,
+                       NULL, NULL,
+                       handle_request, NULL,
+                       MHD_OPTION_NOTIFY_COMPLETED, NULL, NULL,
+                       // MHD_OPTION_CONNECTION_LIMIT, 42,
+                       MHD_OPTION_CONNECTION_TIMEOUT, 0,
+                       MHD_OPTION_EXTERNAL_LOGGER, NULL, NULL,
+                       MHD_OPTION_END);
+
+  while(pracro_is_running) sleep(1);
 
-  journalwriter.commit();
+  MHD_stop_daemon(d);
 
-  PRACRO_DEBUG(server, "Out of read loop!\n");
+  PRACRO_DEBUG(server, "Server gracefully shut down.\n");
 }
 
+
+#if 0
 //#define NON_FORKING
 #include <sys/socket.h>
 extern bool pracro_is_running;
@@ -428,7 +445,7 @@ void server()
 
   PRACRO_DEBUG(server, "Server gracefully shut down.\n");
 }
-
+#endif//0
 
 #ifdef TEST_SERVER
 
-- 
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