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fix memleaks

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avoid memleak if memory is full
fix "memleak" at the end of mbus_parse_hex
This commit is contained in:
Stefan Wahren
2013-05-04 19:17:27 +02:00
parent 3935b4013e
commit ee209023b8
3 changed files with 39 additions and 15 deletions
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42
mbus/mbus-protocol.c
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@@ -2658,7 +2658,7 @@ mbus_data_fixed_parse(mbus_frame *frame, mbus_data_fixed *data)
int
mbus_data_variable_parse(mbus_frame *frame, mbus_data_variable *data)
{
mbus_data_record *record;
mbus_data_record *record = NULL;
size_t i, j;
if (frame && data)
@@ -3520,7 +3520,7 @@ char *
mbus_data_variable_xml(mbus_data_variable *data)
{
mbus_data_record *record;
char *buff = NULL;
char *buff = NULL, *new_buff;
size_t len = 0, buff_size = 8192;
int i;
@@ -3541,10 +3541,15 @@ mbus_data_variable_xml(mbus_data_variable *data)
if ((buff_size - len) < 1024)
{
buff_size *= 2;
buff = (char*) realloc(buff,buff_size);
new_buff = (char*) realloc(buff,buff_size);
if (buff == NULL)
if (new_buff == NULL)
{
free(buff);
return NULL;
}
buff = new_buff;
}
len += snprintf(&buff[len], buff_size - len, "%s",
@@ -3696,7 +3701,7 @@ mbus_frame_xml(mbus_frame *frame)
mbus_frame *iter;
mbus_data_record *record;
char *buff = NULL;
char *buff = NULL, *new_buff;
size_t len = 0, buff_size = 8192;
int record_cnt = 0, frame_cnt;
@@ -3736,7 +3741,10 @@ mbus_frame_xml(mbus_frame *frame)
buff = (char*) malloc(buff_size);
if (buff == NULL)
return NULL;
{
mbus_data_record_free(frame_data.data_var.record);
return NULL;
}
// include frame counter in XML output if more than one frame
// is available (frame_cnt = -1 => not included in output)
@@ -3757,10 +3765,16 @@ mbus_frame_xml(mbus_frame *frame)
if ((buff_size - len) < 1024)
{
buff_size *= 2;
buff = (char*) realloc(buff,buff_size);
if (buff == NULL)
new_buff = (char*) realloc(buff,buff_size);
if (new_buff == NULL)
{
free(buff);
mbus_data_record_free(frame_data.data_var.record);
return NULL;
}
buff = new_buff;
}
len += snprintf(&buff[len], buff_size - len, "%s",
@@ -3790,10 +3804,14 @@ mbus_frame_xml(mbus_frame *frame)
if ((buff_size - len) < 1024)
{
buff_size *= 2;
buff = (char*) realloc(buff,buff_size);
if (buff == NULL)
if (new_buff == NULL)
{
free(buff);
mbus_data_record_free(frame_data.data_var.record);
return NULL;
}
buff = new_buff;
}
len += snprintf(&buff[len], buff_size - len, "%s",