[asterisk-commits] mmichelson: branch 1.6.2 r247337 - in /branches/1.6.2: ./ include/asterisk/ m...

SVN commits to the Asterisk project asterisk-commits at lists.digium.com
Wed Feb 17 15:32:22 CST 2010


Author: mmichelson
Date: Wed Feb 17 15:32:18 2010
New Revision: 247337

URL: http://svnview.digium.com/svn/asterisk?view=rev&rev=247337
Log:
Merged revisions 247335 via svnmerge from 
https://origsvn.digium.com/svn/asterisk/trunk

........
  r247335 | mmichelson | 2010-02-17 15:22:40 -0600 (Wed, 17 Feb 2010) | 20 lines
  
  Fix two problems in ast_str functions found while writing a unit test.
  
  1. The documentation for ast_str_set and ast_str_append state that
  the max_len parameter may be -1 in order to limit the size of the
  ast_str to its current allocated size. The problem was that the max_len
  parameter in all cases was a size_t, which is unsigned. Thus a -1 was
  interpreted as UINT_MAX instead of -1. Changing the max_len parameter
  to be ssize_t fixed this issue.
  
  2. Once issue 1 was fixed, there was an off-by-one error in the case
  where we attempted to write a string larger than the current allotted
  size to a string when -1 was passed as the max_len parameter. When trying
  to write more than the allotted size, the ast_str's __AST_STR_USED was
  set to 1 higher than it should have been. Thanks to Tilghman for quickly
  spotting the offending line of code.
  
  Oh, and the unit test that I referenced in the top line of this commit
  will be added to reviewboard shortly. Sit tight...
........

Modified:
    branches/1.6.2/   (props changed)
    branches/1.6.2/include/asterisk/strings.h
    branches/1.6.2/main/strings.c

Propchange: branches/1.6.2/
------------------------------------------------------------------------------
Binary property 'trunk-merged' - no diff available.

Modified: branches/1.6.2/include/asterisk/strings.h
URL: http://svnview.digium.com/svn/asterisk/branches/1.6.2/include/asterisk/strings.h?view=diff&rev=247337&r1=247336&r2=247337
==============================================================================
--- branches/1.6.2/include/asterisk/strings.h (original)
+++ branches/1.6.2/include/asterisk/strings.h Wed Feb 17 15:32:18 2010
@@ -699,14 +699,14 @@
  *       file.
  */
 #if (defined(MALLOC_DEBUG) && !defined(STANDALONE))
-int __attribute__((format(printf, 4, 0))) __ast_debug_str_helper(struct ast_str **buf, size_t max_len,
+int __attribute__((format(printf, 4, 0))) __ast_debug_str_helper(struct ast_str **buf, ssize_t max_len,
 							   int append, const char *fmt, va_list ap, const char *file, int lineno, const char *func);
 #define __ast_str_helper(a,b,c,d,e)	__ast_debug_str_helper(a,b,c,d,e,__FILE__,__LINE__,__PRETTY_FUNCTION__)
 #else
-int __attribute__((format(printf, 4, 0))) __ast_str_helper(struct ast_str **buf, size_t max_len,
+int __attribute__((format(printf, 4, 0))) __ast_str_helper(struct ast_str **buf, ssize_t max_len,
 							   int append, const char *fmt, va_list ap);
 #endif
-char *__ast_str_helper2(struct ast_str **buf, size_t max_len,
+char *__ast_str_helper2(struct ast_str **buf, ssize_t max_len,
 	const char *src, size_t maxsrc, int append, int escapecommas);
 
 /*!
@@ -747,7 +747,7 @@
  * }
  * \endcode
  */
-AST_INLINE_API(int __attribute__((format(printf, 3, 0))) ast_str_set_va(struct ast_str **buf, size_t max_len, const char *fmt, va_list ap),
+AST_INLINE_API(int __attribute__((format(printf, 3, 0))) ast_str_set_va(struct ast_str **buf, ssize_t max_len, const char *fmt, va_list ap),
 {
 	return __ast_str_helper(buf, max_len, 0, fmt, ap);
 }
@@ -758,35 +758,35 @@
  *
  * Same as ast_str_set_va(), but append to the current content.
  */
-AST_INLINE_API(int __attribute__((format(printf, 3, 0))) ast_str_append_va(struct ast_str **buf, size_t max_len, const char *fmt, va_list ap),
+AST_INLINE_API(int __attribute__((format(printf, 3, 0))) ast_str_append_va(struct ast_str **buf, ssize_t max_len, const char *fmt, va_list ap),
 {
 	return __ast_str_helper(buf, max_len, 1, fmt, ap);
 }
 )
 
 /*!\brief Set a dynamic string to a non-NULL terminated substring. */
-AST_INLINE_API(char *ast_str_set_substr(struct ast_str **buf, size_t maxlen, const char *src, size_t maxsrc),
+AST_INLINE_API(char *ast_str_set_substr(struct ast_str **buf, ssize_t maxlen, const char *src, size_t maxsrc),
 {
 	return __ast_str_helper2(buf, maxlen, src, maxsrc, 0, 0);
 }
 )
 
 /*!\brief Append a non-NULL terminated substring to the end of a dynamic string. */
-AST_INLINE_API(char *ast_str_append_substr(struct ast_str **buf, size_t maxlen, const char *src, size_t maxsrc),
+AST_INLINE_API(char *ast_str_append_substr(struct ast_str **buf, ssize_t maxlen, const char *src, size_t maxsrc),
 {
 	return __ast_str_helper2(buf, maxlen, src, maxsrc, 1, 0);
 }
 )
 
 /*!\brief Set a dynamic string to a non-NULL terminated substring, with escaping of commas. */
-AST_INLINE_API(char *ast_str_set_escapecommas(struct ast_str **buf, size_t maxlen, const char *src, size_t maxsrc),
+AST_INLINE_API(char *ast_str_set_escapecommas(struct ast_str **buf, ssize_t maxlen, const char *src, size_t maxsrc),
 {
 	return __ast_str_helper2(buf, maxlen, src, maxsrc, 0, 1);
 }
 )
 
 /*!\brief Append a non-NULL terminated substring to the end of a dynamic string, with escaping of commas. */
-AST_INLINE_API(char *ast_str_append_escapecommas(struct ast_str **buf, size_t maxlen, const char *src, size_t maxsrc),
+AST_INLINE_API(char *ast_str_append_escapecommas(struct ast_str **buf, ssize_t maxlen, const char *src, size_t maxsrc),
 {
 	return __ast_str_helper2(buf, maxlen, src, maxsrc, 1, 1);
 }
@@ -811,7 +811,7 @@
  */
 AST_INLINE_API(
 int __attribute__((format(printf, 3, 4))) ast_str_set(
-	struct ast_str **buf, size_t max_len, const char *fmt, ...),
+	struct ast_str **buf, ssize_t max_len, const char *fmt, ...),
 {
 	int res;
 	va_list ap;
@@ -832,7 +832,7 @@
  */
 AST_INLINE_API(
 int __attribute__((format(printf, 3, 4))) ast_str_append(
-	struct ast_str **buf, size_t max_len, const char *fmt, ...),
+	struct ast_str **buf, ssize_t max_len, const char *fmt, ...),
 {
 	int res;
 	va_list ap;

Modified: branches/1.6.2/main/strings.c
URL: http://svnview.digium.com/svn/asterisk/branches/1.6.2/main/strings.c?view=diff&rev=247337&r1=247336&r2=247337
==============================================================================
--- branches/1.6.2/main/strings.c (original)
+++ branches/1.6.2/main/strings.c Wed Feb 17 15:32:18 2010
@@ -49,10 +49,10 @@
  */
 
 #if (defined(MALLOC_DEBUG) && !defined(STANDALONE))
-int __ast_debug_str_helper(struct ast_str **buf, size_t max_len,
+int __ast_debug_str_helper(struct ast_str **buf, ssize_t max_len,
 	int append, const char *fmt, va_list ap, const char *file, int lineno, const char *function)
 #else
-int __ast_str_helper(struct ast_str **buf, size_t max_len,
+int __ast_str_helper(struct ast_str **buf, ssize_t max_len,
 	int append, const char *fmt, va_list ap)
 #endif
 {
@@ -106,7 +106,7 @@
 		break;
 	} while (1);
 	/* update space used, keep in mind the truncation */
-	(*buf)->__AST_STR_USED = (res + offset > (*buf)->__AST_STR_LEN) ? (*buf)->__AST_STR_LEN : res + offset;
+	(*buf)->__AST_STR_USED = (res + offset > (*buf)->__AST_STR_LEN) ? (*buf)->__AST_STR_LEN - 1 : res + offset;
 
 	return res;
 }
@@ -122,7 +122,7 @@
 	} while (maxlen == 0 && (*buf)->__AST_STR_LEN - 5 < (*buf)->__AST_STR_USED);
 }
 
-char *__ast_str_helper2(struct ast_str **buf, size_t maxlen, const char *src, size_t maxsrc, int append, int escapecommas)
+char *__ast_str_helper2(struct ast_str **buf, ssize_t maxlen, const char *src, size_t maxsrc, int append, int escapecommas)
 {
 	int dynamic = 0;
 	char *ptr = append ? &((*buf)->__AST_STR_STR[(*buf)->__AST_STR_USED]) : (*buf)->__AST_STR_STR;




More information about the asterisk-commits mailing list