taint enforce: file access backstops

[exim.git] / src / src / mytypes.h

diff --git a/src/src/mytypes.h b/src/src/mytypes.h
index a68dc281714903c62d1ba29c3b3b2e1a420c69fd..d652daea3637a1ff3382882456d9efa7daa3894f 100644 (file)
--- a/src/src/mytypes.h
+++ b/src/src/mytypes.h
@@ -77,6 +77,7 @@ almost always literal strings. */
 #define CUS  (const unsigned char *)
 #define USS  (unsigned char **)
 #define CUSS (const unsigned char **)
+#define CCSS (const char **)
 
 /* The C library string functions expect "char *" arguments. Use macros to
 avoid having to write a cast each time. We do this for string and file
@@ -88,31 +89,33 @@ functions that are called quite often; for other calls to external libraries
 #define Uchdir(s)          chdir(CCS(s))
 #define Uchmod(s,n)        chmod(CCS(s),n)
 #define Ufgets(b,n,f)      fgets(CS(b),n,f)
-#define Ufopen(s,t)        fopen(CCS(s),CCS(t))
+#define Ufopen(s,t)        exim_fopen(CCS(s),CCS(t))
 #define Ulink(s,t)         link(CCS(s),CCS(t))
 #define Ulstat(s,t)        lstat(CCS(s),t)
 
-#ifdef O_BINARY                                        /* This is for Cygwin,  */
-#define Uopen(s,n,m)       open(CCS(s),(n)|O_BINARY,m) /* where all files must */
-#else                                                  /* be opened as binary  */
-#define Uopen(s,n,m)       open(CCS(s),n,m)            /* to avoid problems    */
-#endif                                                 /* with CRLF endings.   */
+#ifdef O_BINARY                                                        /* This is for Cygwin,  */
+#define Uopen(s,n,m)       exim_open(CCS(s),(n)|O_BINARY,m)    /* where all files must */
+#define Uopen2(s,n)        exim_open2(CCS(s),(n)|O_BINARY)
+#else                                                          /* be opened as binary  */
+#define Uopen(s,n,m)       exim_open(CCS(s),n,m)               /* to avoid problems    */
+#define Uopen2(s,n)        exim_open2(CCS(s),n)        
+#endif                                                         /* with CRLF endings.   */
 #define Uread(f,b,l)       read(f,CS(b),l)
 #define Urename(s,t)       rename(CCS(s),CCS(t))
 #define Ustat(s,t)         stat(CCS(s),t)
-#define Ustrcat(s,t)       __Ustrcat(s,t, __FUNCTION__, __LINE__)
+#define Ustrcat(s,t)       __Ustrcat(s, CUS(t), __FUNCTION__, __LINE__)
 #define Ustrchr(s,n)       US strchr(CCS(s),n)
 #define CUstrchr(s,n)      CUS strchr(CCS(s),n)
 #define CUstrerror(n)      CUS strerror(n)
 #define Ustrcmp(s,t)       strcmp(CCS(s),CCS(t))
-#define Ustrcpy(s,t)       __Ustrcpy(s,t, __FUNCTION__, __LINE__)
+#define Ustrcpy(s,t)       __Ustrcpy(s, CUS(t), __FUNCTION__, __LINE__)
 #define Ustrcpy_nt(s,t)    strcpy(CS s, CCS t)         /* no taint check */
 #define Ustrcspn(s,t)      strcspn(CCS(s),CCS(t))
 #define Ustrftime(s,m,f,t) strftime(CS(s),m,f,t)
 #define Ustrlen(s)         (int)strlen(CCS(s))
-#define Ustrncat(s,t,n)    __Ustrncat(s,t,n, __FUNCTION__, __LINE__)
+#define Ustrncat(s,t,n)    __Ustrncat(s, CUS(t),n, __FUNCTION__, __LINE__)
 #define Ustrncmp(s,t,n)    strncmp(CCS(s),CCS(t),n)
-#define Ustrncpy(s,t,n)    __Ustrncpy(s,t,n, __FUNCTION__, __LINE__)
+#define Ustrncpy(s,t,n)    __Ustrncpy(s, CUS(t),n, __FUNCTION__, __LINE__)
 #define Ustrncpy_nt(s,t,n) strncpy(CS s, CCS t, n)     /* no taint check */
 #define Ustrpbrk(s,t)      strpbrk(CCS(s),CCS(t))
 #define Ustrrchr(s,n)      US strrchr(CCS(s),n)
@@ -136,6 +139,11 @@ is_tainted(const void * p)
 {
 #if defined(COMPILE_UTILITY) || defined(MACRO_PREDEF)
 return FALSE;
+
+#elif !defined(TAINT_CHECK_FAST)
+extern BOOL is_tainted_fn(const void *);
+return is_tainted_fn(p);
+
 #else
 extern void * tainted_base, * tainted_top;
 return p >= tainted_base && p < tainted_top;