From 1ba325a1679acc7692cb9f674cfbe452cf763e12 Mon Sep 17 00:00:00 2001
From: Yves Fischer <yvesf-git@xapek.org>
Date: Thu, 18 Apr 2013 02:08:47 +0200
Subject: remove libmagic, fix sighandler

---
 datastore-leveldb/Makefile     |   4 +-
 datastore-leveldb/src/main.cpp | 103 +++++++++++++++--------------------------
 2 files changed, 39 insertions(+), 68 deletions(-)

diff --git a/datastore-leveldb/Makefile b/datastore-leveldb/Makefile
index 33f61bd..3117123 100644
--- a/datastore-leveldb/Makefile
+++ b/datastore-leveldb/Makefile
@@ -1,10 +1,10 @@
 CC = gcc
 CPP = foo
-OBJ= src/http_parser.o src/server_eh.o src/main.o mongoose/mongoose.o
+OBJ= src/main.o mongoose/mongoose.o
 OUT = main
 CFLAGS =
 CXXFLAGS = -std=c++11 -Imongoose
-LDFLAGS = -lleveldb -lev -lboost_regex -lmagic
+LDFLAGS = -lleveldb -lboost_regex
 
 all: build
 
diff --git a/datastore-leveldb/src/main.cpp b/datastore-leveldb/src/main.cpp
index dab88cd..f7f2f5d 100644
--- a/datastore-leveldb/src/main.cpp
+++ b/datastore-leveldb/src/main.cpp
@@ -2,7 +2,6 @@ extern "C" {
 #include <unistd.h>
 #include <signal.h>
 #include <string.h>
-#include <magic.h>
 #include "mongoose.h"
 }
 
@@ -25,8 +24,6 @@ std::forward_list<std::pair<boost::regex,std::function<void(const boost::cmatch&
 
 static std::map<std::string,leveldb::DB*> dbs;
 
-static magic_t magic_cookie;
-
 struct mg_context *ctx;
 
 bool sensor_name_is_sane(std::string& name) {
@@ -67,26 +64,6 @@ leveldb::DB *getDB(std::string& name) {
     }
 }
 
-// see http_parser.h
-// char DELETE = 0;
-// char GET = 1;
-// char HEAD = 2;
-// char POST = 3;
-// char PUT = 4;
-
-
-static inline void http_ok(int fd, const char *content_type, const char *extra_headers) {
-#define write_const(fd, text) \
-    write(fd, text, strlen(text));
- 
-    write_const(fd, "HTTP/1.1 200 OK\r\nContent-Type: ");
-    write_const(fd, content_type);
-    write_const(fd, "\r\n");
-    if (extra_headers) write_const(fd, extra_headers);
-    write_const(fd, "\r\n");
-#undef write_const
-}
-
 std::string make_key(uint64_t timestamp) {
     std::stringstream key;
     key << "ts-";
@@ -129,11 +106,11 @@ void web_handle_api_range(const boost::cmatch &match, struct mg_connection *conn
         mg_printf(conn, "HTTP/1.1 500 Internal Error\r\n\r\n");
         return;
     }
-        
+
     mg_printf(conn,
-              "HTTP/1.1 200 Value received\r\n"
-              "Content-Type: application/json; encoding=UTF-8\r\n"
-              "\r\n");
+            "HTTP/1.1 200 Value received\r\n"
+            "Content-Type: application/json; encoding=UTF-8\r\n"
+            "\r\n");
 
     std::cout << "sensor=" << sensor << " start=" << start << " end=" << end << std::endl;
 
@@ -145,33 +122,33 @@ void web_handle_api_range(const boost::cmatch &match, struct mg_connection *conn
     bool first = true;
     std::ostringstream outbuf;
     for (it->Seek(key_start); 
-                 it->Valid() && cmp->Compare(it->key(), key_end) < 0;
-                 it->Next()) {
-            const char *key = it->key().data();
-            size_t key_size =  it->key().size();
-            if (key_size != 20+3) {
-                std::cerr << "invalid key" << std::endl;
-                return;
-            }
-
-            int offset = 3; //ts-
-            // skip zeros in timestamp
-            while (offset < key_size-1 and *(key+offset) == '0')
-                offset++;
-            
-            if (first)
-                first = false;
-            else
-                outbuf << ',';
-            
-            outbuf << '[';
-            outbuf.write(key+offset, key_size-offset);
+            it->Valid() && cmp->Compare(it->key(), key_end) < 0;
+            it->Next()) {
+        const char *key = it->key().data();
+        size_t key_size =  it->key().size();
+        if (key_size != 20+3) {
+            std::cerr << "invalid key" << std::endl;
+            return;
+        }
+
+        int offset = 3; //ts-
+        // skip zeros in timestamp
+        while (offset < key_size-1 and *(key+offset) == '0')
+            offset++;
+
+        if (first)
+            first = false;
+        else
             outbuf << ',';
-            outbuf.write(it->value().data(), it->value().size());
-            outbuf << ']';
 
-            mg_write(conn, outbuf.str().c_str(), outbuf.tellp());
-            outbuf.seekp(0);
+        outbuf << '[';
+        outbuf.write(key+offset, key_size-offset);
+        outbuf << ',';
+        outbuf.write(it->value().data(), it->value().size());
+        outbuf << ']';
+
+        mg_write(conn, outbuf.str().c_str(), outbuf.tellp());
+        outbuf.seekp(0);
     }
     mg_printf(conn, "]}\r\n");
     delete it;
@@ -188,11 +165,13 @@ int begin_request_handler(struct mg_connection *conn) {
             return 1;
         }
     }
-    
+
     return 0;
 }
 
 
+struct sigaction old_action;
+
 void sigint_handler(int s) {
     // Stop the server.
     mg_stop(ctx);
@@ -203,7 +182,6 @@ void sigint_handler(int s) {
         delete (*it).second;
         dbs.erase(it);
     }
-
     exit(0);
 }
 
@@ -227,22 +205,15 @@ int main(int argc, char **argv) {
                 boost::regex("/api/range/([a-zA-Z0-9]+)/([0-9]+)/([0-9]+)"),
                 web_handle_api_range));
 
-    magic_cookie = magic_open(MAGIC_MIME_TYPE);
-    magic_load(magic_cookie, NULL);
-
 
     // Signals: handle C-c
-    struct sigaction on_sigint;
-    on_sigint.sa_handler = sigint_handler;
-    sigemptyset(&on_sigint.sa_mask);
-    on_sigint.sa_flags = 0;
-    
-    sigaction(SIGINT, &on_sigint, NULL);
-
+    struct sigaction action;
+    memset(&action, 0, sizeof(action));
+    action.sa_handler = &sigint_handler;
+    sigaction(SIGINT, &action, &old_action);
 
     // Start the web server.
     ctx = mg_start(&callbacks, NULL, options);
-
-    while (1) sleep(1);
+    pause();
     return 1;
 }
-- 
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