Added the debuggin_strdup() function and the associated safestrdup()

macro.  Also, added asserts to the other debugging_* functions.

ChangeLog

@@ -1,5 +1,15 @@
 2002-04-18  Robert James Kaes  <rjkaes@flarenet.com>
 
+	* src/utils.c (debugging_strdup): Added this function to be used
+	by the safestrdup() macro to replace all the calls to strdup().
+	This should allow better tracking of the memory usage.
+	Also, all the debugging_* functions have had asserts added to them
+	to hopefully improve the quality of the code.
+
+	* src/reqs.c (get_all_headers): Fixed a memory leak since I was
+	not freeing the header variable, even though the hashmap makes a
+	copy of it.  Thanks to Petr Lampa for finding this one.
+
 	* src/tinyproxy.c (takesig): Moved the filter_destroy() code out
 	of the signal handler and placed it inside of main().  Same
 	reasoning as the rotate_log_files() changes below.

src/utils.c

@@ -1,4 +1,4 @@
-/* $Id: utils.c,v 1.26 2002-04-18 16:57:06 rjkaes Exp $
+/* $Id: utils.c,v 1.27 2002-04-18 17:49:14 rjkaes Exp $
  *
  * Misc. routines which are used by the various functions to handle strings
  * and memory allocation and pretty much anything else we can think of. Also,
@@ -37,7 +37,12 @@ void *
 debugging_calloc(size_t nmemb, size_t size, const char *file,
 		 unsigned long line)
 {
-	void *ptr = calloc(nmemb, size);
+	void *ptr;
+
+	assert(nmemb > 0);
+	assert(size > 0);
+
+	ptr = calloc(nmemb, size);
 	fprintf(stderr, "{calloc: %p:%u x %u} %s:%lu\n", ptr, nmemb, size, file,
 		line);
 	return ptr;
@@ -46,7 +51,11 @@ debugging_calloc(size_t nmemb, size_t size, const char *file,
 void *
 debugging_malloc(size_t size, const char *file, unsigned long line)
 {
-	void *ptr = malloc(size);
+	void *ptr;
+
+	assert(size > 0);
+
+	ptr = malloc(size);
 	fprintf(stderr, "{malloc: %p:%u} %s:%lu\n", ptr, size, file, line);
 	return ptr;
 }
@@ -54,7 +63,12 @@ debugging_malloc(size_t size, const char *file, unsigned long line)
 void *
 debugging_realloc(void *ptr, size_t size, const char *file, unsigned long line)
 {
-	void *newptr = realloc(ptr, size);
+	void *newptr;
+	
+	assert(ptr != NULL);
+	assert(size > 0);
+	
+	newptr = realloc(ptr, size);
 	fprintf(stderr, "{realloc: %p -> %p:%u} %s:%lu\n", ptr, newptr, size,
 		file, line);
 	return newptr;
@@ -63,11 +77,31 @@ debugging_realloc(void *ptr, size_t size, const char *file, unsigned long line)
 void
 debugging_free(void *ptr, const char *file, unsigned long line)
 {
+	assert(ptr != NULL);
+
 	fprintf(stderr, "{free: %p} %s:%lu\n", ptr, file, line);
 	free(ptr);
 	return;
 }
 
+char*
+debugging_strdup(const char* s, const char* file, unsigned long line)
+{
+	char* ptr;
+	size_t len;
+
+	assert(s != NULL);
+
+	len = strlen(s) + 1;
+	ptr = malloc(len);
+	if (!ptr)
+		return NULL;
+	memcpy(ptr, s, len);
+
+	fprintf(stderr, "{strdup: %p:%u} %s:%lu\n", ptr, len, file, line);
+	return ptr;
+}
+
 #endif
 
 #define HEADER_SIZE (1024 * 8)

src/utils.h

@@ -1,4 +1,4 @@
-/* $Id: utils.h,v 1.15 2002-04-18 16:57:06 rjkaes Exp $
+/* $Id: utils.h,v 1.16 2002-04-18 17:49:14 rjkaes Exp $
  *
  * See 'utils.h' for a detailed description.
  *
@@ -63,16 +63,20 @@ extern void *debugging_malloc(size_t size, const char *file,
 extern void debugging_free(void *ptr, const char *file, unsigned long line);
 extern void *debugging_realloc(void *ptr, size_t size, const char *file,
 			       unsigned long line);
+extern char *debugging_strdup(const char* s, const char* file,
+			      unsigned long line);
 
 #  define safecalloc(x, y) debugging_calloc(x, y, __FILE__, __LINE__)
 #  define safemalloc(x) debugging_malloc(x, __FILE__, __LINE__)
 #  define saferealloc(x, y) debugging_realloc(x, y, __FILE__, __LINE__)
 #  define safefree(x) debugging_free(x, __FILE__, __LINE__)
+#  define safestrdup(x) debugging_strdup(x, __FILE__, __LINE__)
 #else
 #  define safecalloc(x, y) calloc(x, y)
 #  define safemalloc(x) malloc(x)
 #  define saferealloc(x, y) realloc(x, y)
 #  define safefree(x) free(x)
+#  define safestrdup(x) strdup(x)
 #endif
 
 #endif