Updated included headers to support compilation on Windows (using Visual C++)

- most of posix related functions and constants in unistd.h can be
  found in io.h in Visual C++
- introduced src/compat/msvc.h to adjust for compiler differences (and
  avoid updating code with #ifdef blocks for Windows support)
- removed some included headers that are not needed (both on Unix and
  Windows builds)

Author: eduar-hte

examples/multiprocess_c/multi.c

@@ -19,7 +19,11 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#ifndef WIN32
 #include <unistd.h>
+#else
+#include <io.h>
+#endif
 #include <sys/types.h>
 #include <sys/wait.h>
 #include <sys/time.h>

examples/using_bodies_in_chunks/simple_request.cc

@@ -13,7 +13,11 @@
  *
  */
 
+#ifndef WIN32
 #include <unistd.h>
+#else
+#include <io.h>
+#endif
 #include <stdio.h>
 #include <string.h>
 

src/actions/transformations/html_entity_decode.cc

@@ -27,6 +27,10 @@
 #include "modsecurity/transaction.h"
 #include "src/actions/transformations/transformation.h"
 
+#ifdef WIN32
+#include "src/compat/msvc.h"
+#endif
+
 
 namespace modsecurity {
 namespace actions {

src/actions/transformations/lower_case.cc

@@ -17,6 +17,7 @@
 
 #include <algorithm>
 #include <string>
+#include <locale>
 
 #include "modsecurity/transaction.h"
 #include "src/actions/transformations/transformation.h"

src/actions/transformations/upper_case.cc

@@ -17,6 +17,7 @@
 
 #include <algorithm>
 #include <string>
+#include <locale>
 
 #include "modsecurity/transaction.h"
 #include "src/actions/transformations/transformation.h"

src/audit_log/writer/parallel.cc

@@ -21,7 +21,12 @@
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <fcntl.h>
+#ifndef WIN32
 #include <unistd.h>
+#else
+#include <io.h>
+#include "src/compat/msvc.h"
+#endif
 #include <stdlib.h>
 
 #include <fstream>

src/audit_log/writer/writer.h

@@ -18,8 +18,10 @@
 
 
 #include <stdio.h>
+#ifndef WIN32
 #include <sys/ipc.h>
 #include <sys/shm.h>
+#endif
 #include <sys/types.h>
 
 #include <iostream>

src/collection/backend/in_memory-per_process.h

@@ -12,6 +12,7 @@
  * directly using the email address [email protected].
  *
  */
+#include <pthread.h>
 
 
 #ifdef __cplusplus

src/collection/backend/lmdb.cc

@@ -18,7 +18,11 @@
 #include "src/collection/backend/collection_data.h"
 
 #include <sys/types.h>
+#ifndef WIN32
 #include <unistd.h>
+#else
+#include <io.h>
+#endif
 
 #include <string>
 #include <memory>

src/compat/msvc.h

@@ -0,0 +1,22 @@
+#ifndef __COMPAT_MSVC
+#define __COMPAT_MSVC
+
+#include <time.h>
+
+#if !defined(S_ISREG) && defined(S_IFMT) && defined(S_IFREG)
+#define S_ISREG(m) (((m) & S_IFMT) == S_IFREG)
+#endif
+
+#define strcasecmp   _stricmp
+#define strncasecmp  _strnicmp
+#define strtok_r     strtok_s
+#define popen        _popen
+#define pclose       _pclose
+
+inline tm* localtime_r(const time_t* tin, tm* tout) {
+  if (!localtime_s(tout, tin)) return tout;
+
+  return nullptr;
+}
+
+#endif