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Fixed potential segmentation faults

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This commit is contained in:
Stefan Wahren
2012-05-18 13:35:02 +02:00
parent 2c98c6c54d
commit 11f6392df3
4 changed files with 99 additions and 43 deletions
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78
mbus/mbus-protocol-aux.c
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@ -707,6 +707,12 @@ int mbus_fixed_normalize(int medium_unit, long medium_value, char **unit_out, do
double exponent = 0.0;
int i;
medium_unit = medium_unit & 0x3F;
if (unit_out == NULL || value_out == NULL || quantity_out == NULL)
{
MBUS_ERROR("%s: Invalid parameter.\n", __PRETTY_FUNCTION__);
return -1;
}
switch (medium_unit)
{
@ -909,6 +915,12 @@ mbus_vif_unit_normalize(int vif, double value, char **unit_out, double *value_ou
int i;
if (unit_out == NULL || value_out == NULL || quantity_out == NULL)
{
MBUS_ERROR("%s: Invalid parameter.\n", __PRETTY_FUNCTION__);
return -1;
}
for(i=0; vif_table[i].vif < 0xfff; ++i)
{
if (vif_table[i].vif == newVif)
@ -932,6 +944,7 @@ int
mbus_vib_unit_normalize(mbus_value_information_block *vib, double value, char **unit_out, double *value_out, char **quantity_out)
{
MBUS_DEBUG("%s: vib_unit_normalize - VIF=0x%02X\n", __PRETTY_FUNCTION__, vib->vif);
if (vib->vif == 0xFD) /* first type of VIF extention: see table 8.4.4 a */
{
if (vib->nvife == 0)
@ -1007,30 +1020,33 @@ mbus_record_new()
void
mbus_record_free(mbus_record * rec)
{
if (! rec->is_numeric)
if (rec)
{
free((rec->value).str_val.value);
(rec->value).str_val.value = NULL;
if (! rec->is_numeric)
{
free((rec->value).str_val.value);
(rec->value).str_val.value = NULL;
}
if (rec->unit)
{
free(rec->unit);
rec->unit = NULL;
}
if (rec->function_medium)
{
free(rec->function_medium);
rec->function_medium = NULL;
}
if (rec->quantity)
{
free(rec->quantity);
rec->quantity = NULL;
}
free(rec);
}
if (rec->unit)
{
free(rec->unit);
rec->unit = NULL;
}
if (rec->function_medium)
{
free(rec->function_medium);
rec->function_medium = NULL;
}
if (rec->quantity)
{
free(rec->quantity);
rec->quantity = NULL;
}
free(rec);
}
@ -1079,6 +1095,12 @@ mbus_parse_variable_record(mbus_data_record *data)
char * value_out_str = NULL;
int value_out_str_size = 0;
double real_val = 0.0; /**< normalized value */
if (data == NULL)
{
MBUS_ERROR("%s: Invalid record.\n", __PRETTY_FUNCTION__);
return NULL;
}
if (!(record = mbus_record_new()))
{
@ -1773,6 +1795,12 @@ mbus_probe_secondary_address(mbus_handle * handle, const char *mask, char *match
int mbus_read_slave(mbus_handle * handle, mbus_address *address, mbus_frame * reply)
{
if (handle == NULL || address == NULL)
{
MBUS_ERROR("%s: Invalid handle or address.\n", __PRETTY_FUNCTION__);
return -1;
}
if (address->is_primary)
{
if (mbus_send_request_frame(handle, address->primary) == -1)
@ -1846,6 +1874,12 @@ mbus_scan_2nd_address_range(mbus_handle * handle, int pos, char *addr_mask)
{
int i, i_start, i_end, probe_ret;
char *mask, matching_mask[17];
if (handle == NULL || addr_mask == NULL)
{
MBUS_ERROR("%s: Invalid handle or address mask.\n", __PRETTY_FUNCTION__);
return -1;
}
if (strlen(addr_mask) != 16)
{