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Merged revisions 221153,221157,221303 via svnmerge from

Browse Source 
https://origsvn.digium.com/svn/asterisk/branches/1.4

........
  r221153 | mnick | 2009-09-30 10:37:39 -0500 (Wed, 30 Sep 2009) | 2 lines
  
  check bounds - prevents for buffer overflow
........
  r221157 | mnick | 2009-09-30 10:41:46 -0500 (Wed, 30 Sep 2009) | 8 lines
  
  added a new dialplan function 'CSV_QUOTE' and changed the cdr_custom.sample.conf
  
  (closes issue #15471)
  Reported by: dkerr
  Patches:
        csv_quote_14.txt uploaded by mnick (license )
  Tested by: mnick
........
  r221303 | mnick | 2009-09-30 14:02:00 -0500 (Wed, 30 Sep 2009) | 2 lines
  
  changed the prototype definition of csv_quote
........


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@221368 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Matthias Nick
2009-09-30 19:42:36 +00:00
parent 717d2ec3c9
commit 63984d5c21
2 changed files with 58 additions and 5 deletions
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59
funcs/func_strings.c
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@@ -276,6 +276,17 @@ AST_THREADSTORAGE(result_buf);
<para>Example: ${QUOTE(ab"c"de)} will return "abcde"</para>
</description>
</function>
<function name="CSV_QUOTE" language="en_US">
<synopsis>
Quotes a given string for use in a CSV file, escaping embedded quotes as necessary
</synopsis>
<syntax>
<parameter name="string" required="true" />
</syntax>
<description>
<para>Example: ${CSV_QUOTE("a,b" 123)} will return """a,b"" 123"</para>
</description>
</function>
<function name="SHIFT" language="en_US">
<synopsis>
Removes and returns the first item off of a variable containing delimited text
@@ -862,6 +873,12 @@ static struct ast_custom_function array_function = {
static int quote(struct ast_channel *chan, const char *cmd, char *data, char *buf, size_t len)
{
char *bufptr = buf, *dataptr = data;
if (len < 3){ /* at least two for quotes and one for binary zero */
ast_log(LOG_ERROR, "Not enough buffer");
return -1;
}
if (ast_strlen_zero(data)) {
ast_log(LOG_WARNING, "No argument specified!\n");
ast_copy_string(buf, "\"\"", len);
@@ -869,7 +886,7 @@ static int quote(struct ast_channel *chan, const char *cmd, char *data, char *bu
}
*bufptr++ = '"';
for (; bufptr < buf + len - 1; dataptr++) {
for (; bufptr < buf + len - 3; dataptr++) {
if (*dataptr == '\\') {
*bufptr++ = '\\';
*bufptr++ = '\\';
@@ -892,9 +909,43 @@ static struct ast_custom_function quote_function = {
.read = quote,
};
static int csv_quote(struct ast_channel *chan, const char *cmd, char *data, char *buf, size_t len)
{
char *bufptr = buf, *dataptr = data;
static int len(struct ast_channel *chan, const char *cmd, char *data, char *buf,
size_t buflen)
if (len < 3){ /* at least two for quotes and one for binary zero */
ast_log(LOG_ERROR, "Not enough buffer");
return -1;
}
if (ast_strlen_zero(data)) {
ast_log(LOG_WARNING, "No argument specified!\n");
ast_copy_string(buf,"\"\"",len);
return 0;
}
*bufptr++ = '"';
for (; bufptr < buf + len - 3; dataptr++){
if (*dataptr == '"') {
*bufptr++ = '"';
*bufptr++ = '"';
} else if (*dataptr == '\0') {
break;
} else {
*bufptr++ = *dataptr;
}
}
*bufptr++ = '"';
*bufptr='\0';
return 0;
}
static struct ast_custom_function csv_quote_function = {
.name = "CSV_QUOTE",
.read = csv_quote,
};
static int len(struct ast_channel *chan, const char *cmd, char *data, char *buf, size_t buflen)
{
int length = 0;
@@ -1262,6 +1313,7 @@ static int unload_module(void)
res |= ast_custom_function_unregister(&regex_function);
res |= ast_custom_function_unregister(&array_function);
res |= ast_custom_function_unregister(&quote_function);
res |= ast_custom_function_unregister(&csv_quote_function);
res |= ast_custom_function_unregister(&len_function);
res |= ast_custom_function_unregister(&strftime_function);
res |= ast_custom_function_unregister(&strptime_function);
@@ -1290,6 +1342,7 @@ static int load_module(void)
res |= ast_custom_function_register(&regex_function);
res |= ast_custom_function_register(&array_function);
res |= ast_custom_function_register(&quote_function);
res |= ast_custom_function_register(&csv_quote_function);
res |= ast_custom_function_register(&len_function);
res |= ast_custom_function_register(&strftime_function);
res |= ast_custom_function_register(&strptime_function);