c4w: mkdir($tmpdir)

win32/clamav-for-windows/clamav-for-windows/interface.c

@@ -22,6 +22,7 @@
 #endif
 
 #include "clamav.h"
+#include "others.h"
 #include "shared/output.h"
 #include "mpool.h"
 #include "clscanapi.h"
@@ -363,9 +364,25 @@ int CLAMAPI Scan_Initialize(const wchar_t *pEnginesFolder, const wchar_t *pTempR
 	free_engine_and_unlock();
 	FAIL(CL_EARG, "Can't translate pTempRoot");
     }
+    ret = strlen(tmpdir);
+    while(ret>0 && tmpdir[--ret] == '\\')
+	tmpdir[ret] = '\0';
+    if(!ret || ret + 8 + 1 >= sizeof(tmpdir)) {
+	free_engine_and_unlock();
+	FAIL(CL_EARG, "Bad or too long pTempRoot '%s'", tmpdir);
+    }
+    memcpy(&tmpdir[ret+1], "\\clamtmp", 9);
+    cli_rmdirs(tmpdir);
+    if(!CreateDirectory(tmpdir, NULL)) {
+	ret = GetLastError();
+	if((DWORD)ret != ERROR_ALREADY_EXISTS) {
+	    free_engine_and_unlock();
+	    FAIL(CL_ETMPDIR, "Cannot create pTempRoot '%s': error %d", ret);
+	}
+    }
     if((ret = cl_engine_set_str(engine, CL_ENGINE_TMPDIR, tmpdir))) {
 	free_engine_and_unlock();
-	FAIL(ret, "Failed to set engine tempdir: %s", cl_strerror(ret));
+	FAIL(ret, "Failed to set engine tempdir to '%s': %s", tmpdir, cl_strerror(ret));
     }
     if(!WideCharToMultiByte(CP_ACP, WC_NO_BEST_FIT_CHARS, pEnginesFolder, -1, dbdir, sizeof(dbdir), NULL, &cant_convert) || cant_convert) {
 	free_engine_and_unlock();