1 files changed, 127 insertions, 0 deletions
diff --git a/include/net-snmp/library/snmp_assert.h b/include/net-snmp/library/snmp_assert.h
new file mode 100644
index 0000000..8f52a69
--- /dev/null
+++ b/include/net-snmp/library/snmp_assert.h
@@ -0,0 +1,127 @@
+#ifndef SNMP_ASSERT_H
+#define SNMP_ASSERT_H
+
+#ifdef NETSNMP_USE_ASSERT
+#   include <assert.h>
+#else
+#   include <net-snmp/library/snmp_logging.h>
+#endif
+
+
+/*
+ * MACROs don't need extern "C"
+ */
+
+/*
+ * define __STRING for systems (*cough* sun *cough*) that don't have it
+ */
+#ifndef __STRING
+#  if defined(__STDC__) || defined(_MSC_VER)
+#    define __STRING(x) #x
+#  else
+#    define __STRING(x) "x"
+#  endif /* __STDC__ */
+#endif /* __STRING */
+
+/*
+ * always use assert if requested
+ */
+#ifdef NETSNMP_USE_ASSERT
+/*   void netsnmp_assert( int );*/
+#   define netsnmp_assert(x)  assert( x )
+#   define netsnmp_assert_or_return(x, y)  assert( x )
+#   define netsnmp_assert_or_msgreturn(x, y, z)  assert( x )
+#else
+/*
+ *  if asserts weren't requested, just log, unless NETSNMP_NO_DEBUGGING specified
+ */
+#   ifndef NETSNMP_NO_DEBUGGING
+#      ifdef  NETSNMP_FUNCTION
+#          define NETSNMP_FUNC_FMT " %s()\n"
+#          define NETSNMP_FUNC_PARAM NETSNMP_FUNCTION
+#      else
+#          define NETSNMP_FUNC_FMT "%c"
+#          define NETSNMP_FUNC_PARAM '\n'
+#      endif
+#
+#      define netsnmp_assert(x)  do { \
+              if ( x ) \
+                 ; \
+              else \
+                 snmp_log(LOG_ERR, \
+                          "netsnmp_assert %s failed %s:%d" NETSNMP_FUNC_FMT, \
+                          __STRING(x),__FILE__,__LINE__, \
+                          NETSNMP_FUNC_PARAM); \
+           }while(0)
+#      define netsnmp_assert_or_return(x, y)  do {        \
+              if ( x ) \
+                 ; \
+              else { \
+                 snmp_log(LOG_ERR, \
+                          "netsnmp_assert %s failed %s:%d" NETSNMP_FUNC_FMT, \
+                          __STRING(x),__FILE__,__LINE__, \
+                          NETSNMP_FUNC_PARAM); \
+                 return y; \
+              } \
+           }while(0)
+#      define netsnmp_assert_or_msgreturn(x, y, z)  do {       \
+              if ( x ) \
+                 ; \
+              else { \
+                 snmp_log(LOG_ERR, \
+                          "netsnmp_assert %s failed %s:%d" NETSNMP_FUNC_FMT, \
+                          __STRING(x),__FILE__,__LINE__, \
+                          NETSNMP_FUNC_PARAM); \
+                 snmp_log(LOG_ERR, y); \
+                 return z; \
+              } \
+           }while(0)
+#   else /* NO DEBUGGING */
+#      define netsnmp_assert(x)
+#      define netsnmp_assert_or_return(x, y)  do {        \
+                 if ( x ) \
+                    ; \
+                 else { \
+                    return y; \
+                 } \
+              }while(0)
+#      define netsnmp_assert_or_msgreturn(x, y, z)  do {       \
+                 if ( x ) \
+                    ; \
+                 else { \
+                    return z; \
+                 } \
+              }while(0)
+#   endif /* NO DEBUGGING */
+#endif /* not NETSNMP_USE_ASSERT */
+
+
+#define netsnmp_static_assert(x) \
+    do { switch(0) { case (x): case 0: ; } } while(0)
+
+
+/*
+ *  EXPERIMENTAL macros. May be removed without warning in future
+ * releases. Use at your own risk
+ *
+ * The series of uppercase letters at or near the end of these macros give
+ * an indication of what they do. The letters used are:
+ *
+ *   L  : log a message
+ *   RN : return NULL
+ *   RE : return a specific hardcoded error appropriate for the condition
+ *   RV : return user specified value
+ *
+ */
+#define netsnmp_malloc_check_LRN(ptr)           \
+    netsnmp_assert_or_return( (ptr) != NULL, NULL)
+#define netsnmp_malloc_check_LRE(ptr)           \
+    netsnmp_assert_or_return( (ptr) != NULL, SNMPERR_MALLOC)
+#define netsnmp_malloc_check_LRV(ptr, val)                          \
+    netsnmp_assert_or_return( (ptr) != NULL, val)
+
+#define netsnmp_require_ptr_LRV( ptr, val ) \
+    netsnmp_assert_or_return( (ptr) != NULL, val)
+
+
+#endif /* SNMP_ASSERT_H */