From 28a375d5b724021d2ca391aa708e90b2dbc0dd3b Mon Sep 17 00:00:00 2001
From: Jan Breuer <jan.breuer@jaybee.cz>
Date: 周一, 16 5月 2016 01:48:22 +0800
Subject: [PATCH] Fix buffer overflow in example handling of channel list

---
 libscpi/inc/scpi/config.h |   41 ++++++++++++++++++++++++++++++++++++-----
 1 files changed, 36 insertions(+), 5 deletions(-)

diff --git a/libscpi/inc/scpi/config.h b/libscpi/inc/scpi/config.h
index 1824ab2..7473d9d 100644
--- a/libscpi/inc/scpi/config.h
+++ b/libscpi/inc/scpi/config.h
@@ -89,6 +89,16 @@
 #define USE_USER_ERROR_LIST 0
 #endif
 
+#ifndef USE_DEVICE_DEPENDENT_ERROR_INFORMATION
+#define USE_DEVICE_DEPENDENT_ERROR_INFORMATION SYSTEM_TYPE
+#endif
+
+#if USE_DEVICE_DEPENDENT_ERROR_INFORMATION
+#ifndef USE_MEMORY_ALLOCATION_FREE
+#define USE_MEMORY_ALLOCATION_FREE 1
+#endif
+#endif
+
 #ifndef USE_COMMAND_TAGS
 #define USE_COMMAND_TAGS 1
 #endif
@@ -190,8 +200,10 @@
 /* PIC32mx */
 #if defined(__C32__)
 #define HAVE_STRNLEN            0
-#define HAVE_STRNCASECMP        1
+#define HAVE_STRNCASECMP        0
 #define HAVE_STRNICMP           0
+#define isfinite                finite
+#define signbit(x)              ((x)<0)
 #endif
 
 /* AVR libc */
@@ -234,21 +246,40 @@
 #endif
 
 #if HAVE_DTOSTRE
-#define SCPIDEFINE_floatToStr(v, s, l) strlen(dtostre((double)(v), (s), 6, DTOSTR_PLUS_SIGN | DTOSTR_ALWAYS_SIGN | DTOSTR_UPPERCASE))
+#define SCPIDEFINE_floatToStr(v, s, l) dtostre((double)(v), (s), 6, DTOSTR_PLUS_SIGN | DTOSTR_ALWAYS_SIGN | DTOSTR_UPPERCASE)
 #elif USE_CUSTOM_DTOSTRE
-#define SCPIDEFINE_floatToStr(v, s, l) strlen(SCPI_dtostre((v), (s), (l), 6, 0))
+#define SCPIDEFINE_floatToStr(v, s, l) SCPI_dtostre((v), (s), (l), 6, 0)
 #else
 #define SCPIDEFINE_floatToStr(v, s, l) snprintf((s), (l), "%g", (v))
 #endif
 
 #if HAVE_DTOSTRE
-#define SCPIDEFINE_doubleToStr(v, s, l) strlen(dtostre((v), (s), 15, DTOSTR_PLUS_SIGN | DTOSTR_ALWAYS_SIGN | DTOSTR_UPPERCASE))
+#define SCPIDEFINE_doubleToStr(v, s, l) dtostre((v), (s), 15, DTOSTR_PLUS_SIGN | DTOSTR_ALWAYS_SIGN | DTOSTR_UPPERCASE)
 #elif USE_CUSTOM_DTOSTRE
-#define SCPIDEFINE_doubleToStr(v, s, l) strlen(SCPI_dtostre((v), (s), (l), 15, 0))
+#define SCPIDEFINE_doubleToStr(v, s, l) SCPI_dtostre((v), (s), (l), 15, 0)
 #else
 #define SCPIDEFINE_doubleToStr(v, s, l) snprintf((s), (l), "%.15lg", (v))
 #endif
 
+#if USE_DEVICE_DEPENDENT_ERROR_INFORMATION
+
+#if USE_MEMORY_ALLOCATION_FREE
+#include <stdlib.h>
+#include <string.h>
+#define SCPIDEFINE_DESCRIPTION_MAX_PARTS		2
+#define SCPIDEFINE_strndup(h, s, l)                     strndup((s), (l))
+#define SCPIDEFINE_free(h, s, r)                        free((s))
+#else
+#define SCPIDEFINE_DESCRIPTION_MAX_PARTS                3
+#define SCPIDEFINE_strndup(h, s, l)                     scpiheap_strndup((h), (s), (l))
+#define SCPIDEFINE_free(h, s, r)                        scpiheap_free((h), (s), (r))
+#define SCPIDEFINE_get_parts(h, s, l1, s2, l2)          scpiheap_get_parts((h), (s), (l1), (s2), (l2))
+#endif
+#else
+#define SCPIDEFINE_DESCRIPTION_MAX_PARTS                1
+#define SCPIDEFINE_strndup(h, s, l)                     NULL
+#define SCPIDEFINE_free(h, s, r)
+#endif
 
 #ifdef	__cplusplus
 }

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