1.49b: Allocator and dir listing changes

- Minor improvement to the allocator,
- Several directory listing signatures added.

ChangeLog

@@ -1,3 +1,10 @@
+Version 1.49b:
+--------------
+
+  - Minor improvement to the allocator,
+
+  - Several directory listing signatures added.
+
 Version 1.48b:
 --------------
 

Makefile

@@ -20,7 +20,7 @@
 #
 
 PROGNAME   = skipfish
-VERSION    = 1.48b
+VERSION    = 1.49b
 
 OBJFILES   = http_client.c database.c crawler.c analysis.c report.c
 INCFILES   = alloc-inl.h string-inl.h debug.h types.h http_client.h \

alloc-inl.h

@@ -137,7 +137,10 @@ static inline void* __DFL_ck_memdup(u8* mem, u32 size) {
 
 
 static inline void __DFL_ck_free(void* mem) {
-  if (mem) free(mem - 6);
+  if (mem) {
+    if (ALLOC_C(mem) != ALLOC_MAGIC) FATAL("Bad alloc canary");
+    free(mem - 6);
+  }
 }
 
 

analysis.c

@@ -2357,6 +2357,16 @@ static void check_for_stuff(struct http_request* req,
     return;
   }
 
+  /* Add more directory signatures here... */
+
+  if (strstr((char*)sniffbuf, "<A HREF=\"?N=D\">") ||
+      strstr((char*)sniffbuf, "<a href=\"?C=N;O=D\">") ||
+      strstr((char*)sniffbuf, "<h1>Index of /") ||
+      strstr((char*)sniffbuf, ">[To Parent Directory]<")) {
+    problem(PROB_FILE_POI, req, res, (u8*)"Directory listing", req->pivot, 0);
+    return;
+  }
+
   if (res->sniff_mime_id == MIME_ASC_GENERIC) {
     u8* x = sniffbuf;
     u32 slashes = 0;