Fix multiple issues with MSVC Windows build

.gitignore

@@ -20,3 +20,22 @@ src/unshield-deobfuscate
 .idea
 build
 /cmake-build-debug/
+.vs
+*.sln
+*.vcxproj
+*.vcxproj.filters
+*.vcxproj.user
+DartConfiguration.tcl
+CTestTestfile.cmake
+*.tlog
+*.obj
+*.FileListAbsolute.txt
+*.lastbuildstate
+*.log
+*.pdb
+*.lib
+*.recipe
+*.exp
+*.ilk
+*.exe
+*.dll

lib/CMakeLists.txt

@@ -25,6 +25,7 @@ if(BUILD_STATIC)
     add_library(libunshield STATIC ${LIBUNSHIELD_HEADERS} ${LIBUNSHIELD_SOURCES})
 else()
     add_library(libunshield SHARED ${LIBUNSHIELD_HEADERS} ${LIBUNSHIELD_SOURCES})
+    add_compile_definitions(LIBUNSHIELD_DYNAMIC_LIBRARY)
 endif()
 
 target_include_directories(libunshield PUBLIC

lib/helper.c

@@ -43,7 +43,7 @@ long int unshield_get_path_max(Unshield* unshield)
 
 char *unshield_get_base_directory_name(Unshield *unshield) {
     long int path_max = unshield_get_path_max(unshield);
-    char *p = strrchr(unshield->filename_pattern, '/');
+    char *p = unshield_get_last_path_separator(unshield->filename_pattern);
     char *dirname = malloc(path_max);
 
     if (p) {
@@ -95,7 +95,7 @@ FILE* unshield_fopen_for_reading(Unshield* unshield, int index, const char* suff
     DIR *sourcedir = NULL;
     long int path_max = unshield_get_path_max(unshield);
 
-    q=strrchr(filename,'/');
+    q=unshield_get_last_path_separator(filename);
     if (q)
       q++;
     else
@@ -202,6 +202,22 @@ uint8_t* unshield_header_get_buffer(Header* header, uint32_t offset)
     return NULL;
 }
 
+/**
+ Returns the last path separator in a filesystem path
+ */
+char *unshield_get_last_path_separator(char *path)
+{
+  char *p = strrchr(path, '/');
+
+#ifdef WIN32
+  char *pbs = strrchr(path, '\\');
+
+  if (NULL != pbs && (NULL == p || pbs > p))
+    return pbs;
+#endif
+
+  return p;
+}
 
 static int unshield_strlen_utf16(const uint16_t* utf16)
 {

lib/internal.h

@@ -85,6 +85,7 @@ bool unshield_read_common_header(uint8_t** buffer, CommonHeader* common);
 const char* unshield_get_utf8_string(Header* header, const void* buffer);
 const char* unshield_header_get_string(Header* header, uint32_t offset);
 uint8_t* unshield_header_get_buffer(Header* header, uint32_t offset);
+char *unshield_get_last_path_separator(char *path);
 
 static inline void* unshield_fopen(Unshield* unshield, const char *filename, const char *modes)
 {

lib/libunshield.c

@@ -97,7 +97,7 @@ static bool unshield_create_filename_pattern(Unshield* unshield, const char* fil
   {
     char pattern[256];
     char* prefix = strdup(filename);
-    char* p = strrchr(prefix, '/');
+    char* p = unshield_get_last_path_separator(prefix);
     if (!p)
       p = prefix;
 

lib/libunshield.h

@@ -16,6 +16,12 @@
 #ifdef __cplusplus
 extern "C" {
 #endif
+
+#if defined(_MSC_VER) && defined(LIBUNSHIELD_DYNAMIC_LIBRARY)
+#define UNSHIELD_DLLEXPORT __declspec(dllexport)
+#else
+#define UNSHIELD_DLLEXPORT
+#endif
 
 typedef struct _Unshield Unshield;
 
@@ -24,16 +30,16 @@ typedef struct _Unshield Unshield;
    Logging
  */
 
-void unshield_set_log_level(int level);
+UNSHIELD_DLLEXPORT void unshield_set_log_level(int level);
 
 
 /*
    Open/close functions
  */
 
-Unshield* unshield_open(const char* filename);
-Unshield* unshield_open_force_version(const char* filename, int version);
-void unshield_close(Unshield* unshield);
+UNSHIELD_DLLEXPORT Unshield* unshield_open(const char* filename);
+UNSHIELD_DLLEXPORT Unshield* unshield_open_force_version(const char* filename, int version);
+UNSHIELD_DLLEXPORT void unshield_close(Unshield* unshield);
 
 typedef struct
 {
@@ -48,8 +54,8 @@ typedef struct
     struct dirent* (*readdir)(void *dir, void *userdata);
 } UnshieldIoCallbacks;
 
-Unshield* unshield_open2(const char* filename, const UnshieldIoCallbacks* callbacks, void* userdata);
-Unshield* unshield_open2_force_version(const char* filename, int version, const UnshieldIoCallbacks* callbacks, void* userdata);
+UNSHIELD_DLLEXPORT Unshield* unshield_open2(const char* filename, const UnshieldIoCallbacks* callbacks, void* userdata);
+UNSHIELD_DLLEXPORT Unshield* unshield_open2_force_version(const char* filename, int version, const UnshieldIoCallbacks* callbacks, void* userdata);
 
 /*
    Component functions
@@ -62,8 +68,8 @@ typedef struct
   const char** file_group_names;
 } UnshieldComponent;
 
-int         unshield_component_count    (Unshield* unshield);
-const char* unshield_component_name     (Unshield* unshield, int index);
+UNSHIELD_DLLEXPORT int         unshield_component_count    (Unshield* unshield);
+UNSHIELD_DLLEXPORT const char* unshield_component_name     (Unshield* unshield, int index);
 
 /*
    File group functions
@@ -76,40 +82,40 @@ typedef struct
   unsigned last_file;
 } UnshieldFileGroup;
 
-int                 unshield_file_group_count (Unshield* unshield);
-UnshieldFileGroup*  unshield_file_group_get   (Unshield* unshield, int index);
-UnshieldFileGroup*  unshield_file_group_find  (Unshield* unshield, const char* name);
-const char*         unshield_file_group_name  (Unshield* unshield, int index);
+UNSHIELD_DLLEXPORT int                 unshield_file_group_count (Unshield* unshield);
+UNSHIELD_DLLEXPORT UnshieldFileGroup*  unshield_file_group_get   (Unshield* unshield, int index);
+UNSHIELD_DLLEXPORT UnshieldFileGroup*  unshield_file_group_find  (Unshield* unshield, const char* name);
+UNSHIELD_DLLEXPORT const char*         unshield_file_group_name  (Unshield* unshield, int index);
 
 /*
    Directory functions
  */
 
-int         unshield_directory_count    (Unshield* unshield);
-const char* unshield_directory_name     (Unshield* unshield, int index);
+UNSHIELD_DLLEXPORT int         unshield_directory_count    (Unshield* unshield);
+UNSHIELD_DLLEXPORT const char* unshield_directory_name     (Unshield* unshield, int index);
 
 /*
    File functions
  */
 
-int         unshield_file_count         (Unshield* unshield);
-const char* unshield_file_name          (Unshield* unshield, int index);
-bool        unshield_file_is_valid      (Unshield* unshield, int index);
-bool        unshield_file_save          (Unshield* unshield, int index, const char* filename);
-int         unshield_file_directory     (Unshield* unshield, int index);
-size_t      unshield_file_size          (Unshield* unshield, int index);
+UNSHIELD_DLLEXPORT int         unshield_file_count         (Unshield* unshield);
+UNSHIELD_DLLEXPORT const char* unshield_file_name          (Unshield* unshield, int index);
+UNSHIELD_DLLEXPORT bool        unshield_file_is_valid      (Unshield* unshield, int index);
+UNSHIELD_DLLEXPORT bool        unshield_file_save          (Unshield* unshield, int index, const char* filename);
+UNSHIELD_DLLEXPORT int         unshield_file_directory     (Unshield* unshield, int index);
+UNSHIELD_DLLEXPORT size_t      unshield_file_size          (Unshield* unshield, int index);
 
 /** For investigation of compressed data */
-bool unshield_file_save_raw(Unshield* unshield, int index, const char* filename);
+UNSHIELD_DLLEXPORT bool unshield_file_save_raw(Unshield* unshield, int index, const char* filename);
 
 /** Maybe it's just gzip without size? */
-bool unshield_file_save_old(Unshield* unshield, int index, const char* filename);
+UNSHIELD_DLLEXPORT bool unshield_file_save_old(Unshield* unshield, int index, const char* filename);
 
 /** Deobfuscate a buffer. Seed is 0 at file start */
-void unshield_deobfuscate(unsigned char* buffer, size_t size, unsigned* seed);
+UNSHIELD_DLLEXPORT void unshield_deobfuscate(unsigned char* buffer, size_t size, unsigned* seed);
 
 /** Is the archive Unicode-capable? */
-bool unshield_is_unicode(Unshield* unshield);
+UNSHIELD_DLLEXPORT bool unshield_is_unicode(Unshield* unshield);
 
 #ifdef __cplusplus
 }

src/unshield.c

@@ -96,15 +96,35 @@ static bool make_sure_directory_exists(const char* directory)/*{{{*/
       p+=2;
     else if (0 == strncmp(p, "../", 3))
       p+=3;
+#ifdef WIN32
+    if ('\\' == *p)
+      p++;
+    else if (0 == strncmp(p, ".\\", 2))
+      p += 2;
+    else if (0 == strncmp(p, "..\\", 3))
+      p += 3;
+#endif
     else
     {
+      int is_win_root = 0;
       const char* slash = strchr(p, '/');
+#ifdef WIN32
+      const char* backslash = strchr(p, '\\');
+      if (NULL != backslash && (NULL == slash || backslash < slash))
+        slash = backslash;
+#endif
+
       current = strdup(directory);
 
       if (slash)
         current[slash-directory] = '\0';
 
-      if (stat(current, &dir_stat) < 0)
+#ifdef WIN32
+      if (slash - directory == 2 && current[1] == ':')
+        is_win_root = 1;
+#endif
+
+      if (!is_win_root && stat(current, &dir_stat) < 0)
       {
         #if defined (__MINGW32__) || defined (_WIN32)
         if (_mkdir(current) < 0)