X-Git-Url: https://git.exim.org/exim.git/blobdiff_plain/1d717e1c110562fd6bf28478c79f180cafeba776..7a66b3afa11a70021297c176acf56831692be89a:/src/src/functions.h

diff --git a/src/src/functions.h b/src/src/functions.h
index ea3cf257c..7677a3cd9 100644
--- a/src/src/functions.h
+++ b/src/src/functions.h
@@ -820,6 +820,12 @@ g->s[g->ptr] = '\0';
 return g->s;
 }
 
+static inline unsigned
+gstring_length(const gstring * g)
+{
+return g ? (unsigned)g->ptr : 0;
+}
+
 
 #define gstring_release_unused(g) \
 	gstring_release_unused_trc(g, __FUNCTION__, __LINE__)
@@ -906,9 +912,18 @@ return string_sprintf("%s/%s/%s/%s/%s%s",
 
 static inline uschar *
 spool_fname(const uschar * purpose, const uschar * subdir, const uschar * fname,
-       	const uschar * suffix)
+	const uschar * suffix)
 {
+#ifdef COMPILE_UTILITY		/* version avoiding string-extension */
+int len = Ustrlen(spool_directory) + 1 + Ustrlen(queue_name) + 1 + Ustrlen(purpose) + 1
+	+ Ustrlen(subdir) + 1 + Ustrlen(fname) + Ustrlen(suffix) + 1;
+uschar * buf = store_get(len, FALSE);
+string_format(buf, len, "%s/%s/%s/%s/%s%s",
+	spool_directory, queue_name, purpose, subdir, fname, suffix);
+return buf;
+#else
 return spool_q_fname(purpose, queue_name, subdir, fname, suffix);
+#endif
 }
 
 static inline void
@@ -921,8 +936,10 @@ subdir_str[1] = '\0';
 }
 
 /******************************************************************************/
+/* Time calculations */
+
 static inline void
-timesince(struct timeval * diff, struct timeval * then)
+timesince(struct timeval * diff, const struct timeval * then)
 {
 gettimeofday(diff, NULL);
 diff->tv_sec -= then->tv_sec;
@@ -934,7 +951,7 @@ if ((diff->tv_usec -= then->tv_usec) < 0)
 }
 
 static inline uschar *
-string_timediff(struct timeval * diff)
+string_timediff(const struct timeval * diff)
 {
 static uschar buf[sizeof("0.000s")];
 
@@ -947,7 +964,7 @@ return buf;
 
 
 static inline uschar *
-string_timesince(struct timeval * then)
+string_timesince(const struct timeval * then)
 {
 struct timeval diff;
 timesince(&diff, then);
@@ -955,7 +972,7 @@ return string_timediff(&diff);
 }
 
 static inline void
-report_time_since(struct timeval * t0, uschar * where)
+report_time_since(const struct timeval * t0, const uschar * where)
 {
 # ifdef MEASURE_TIMING
 struct timeval diff;
@@ -974,6 +991,51 @@ if (f.running_in_test_harness) millisleep(millisec);
 #endif
 }
 
+/******************************************************************************/
+/* Taint-checked file opens */
+
+static inline int
+exim_open2(const char *pathname, int flags)
+{
+if (!is_tainted(pathname)) return open(pathname, flags);
+log_write(0, LOG_MAIN|LOG_PANIC, "Tainted filename '%s'\n", pathname);
+errno = EACCES;
+return -1;
+}
+static inline int
+exim_open(const char *pathname, int flags, mode_t mode)
+{
+if (!is_tainted(pathname)) return open(pathname, flags, mode);
+log_write(0, LOG_MAIN|LOG_PANIC, "Tainted filename '%s'\n", pathname);
+errno = EACCES;
+return -1;
+}
+static inline int
+exim_openat(int dirfd, const char *pathname, int flags)
+{
+if (!is_tainted(pathname)) return openat(dirfd, pathname, flags);
+log_write(0, LOG_MAIN|LOG_PANIC, "Tainted filename '%s'\n", pathname);
+errno = EACCES;
+return -1;
+}
+static inline int
+exim_openat4(int dirfd, const char *pathname, int flags, mode_t mode)
+{
+if (!is_tainted(pathname)) return openat(dirfd, pathname, flags, mode);
+log_write(0, LOG_MAIN|LOG_PANIC, "Tainted filename '%s'\n", pathname);
+errno = EACCES;
+return -1;
+}
+
+static inline FILE *
+exim_fopen(const char *pathname, const char *mode)
+{
+if (!is_tainted(pathname)) return fopen(pathname, mode);
+log_write(0, LOG_MAIN|LOG_PANIC, "Tainted filename '%s'\n", pathname);
+errno = EACCES;
+return NULL;
+}
+
 #endif	/* !MACRO_PREDEF */
 
 #endif  /* _FUNCTIONS_H_ */