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Fix potential null dereference

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This commit is contained in:
Zhipeng Xue 2023-03-05 13:38:43 +08:00
parent 39abe6fbfe
commit fbb3b9cef9
2 changed files with 52 additions and 0 deletions
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4
sesman/chansrv/chansrv.c
View File

@ -317,6 +317,10 @@ send_rail_drawing_orders(char *data, int size)
int error;
s = trans_get_out_s(g_con_trans, 8192);
if (s == NULL)
{
return 1;
}
out_uint32_le(s, 0); /* version */
out_uint32_le(s, 8 + 8 + size); /* size */
out_uint32_le(s, 10); /* msg id */

48
sesman/chansrv/smartcard_pcsc.c
View File

@ -498,6 +498,10 @@ scard_function_establish_context_return(void *user_data,
"app_context %d", app_context);
}
out_s = trans_get_out_s(con, 8192);
if (out_s == NULL)
{
return 1;
}
s_push_layer(out_s, iso_hdr, 8);
out_uint32_le(out_s, app_context);
out_uint32_le(out_s, status); /* SCARD_S_SUCCESS status */
@ -564,6 +568,10 @@ scard_function_release_context_return(void *user_data,
}
con = uds_client->con;
out_s = trans_get_out_s(con, 8192);
if (out_s == NULL)
{
return 1;
}
s_push_layer(out_s, iso_hdr, 8);
out_uint32_le(out_s, status); /* SCARD_S_SUCCESS status */
s_mark_end(out_s);
@ -723,6 +731,10 @@ scard_function_list_readers_return(void *user_data,
}
out_s = trans_get_out_s(con, 8192);
if (out_s == NULL)
{
return 1;
}
s_push_layer(out_s, iso_hdr, 8);
out_uint32_le(out_s, llen);
out_uint32_le(out_s, readers);
@ -826,6 +838,10 @@ scard_function_connect_return(void *user_data,
}
}
out_s = trans_get_out_s(con, 8192);
if (out_s == NULL)
{
return 1;
}
s_push_layer(out_s, iso_hdr, 8);
out_uint32_le(out_s, hCard);
out_uint32_le(out_s, dwActiveProtocol);
@ -894,6 +910,10 @@ scard_function_disconnect_return(void *user_data,
}
con = uds_client->con;
out_s = trans_get_out_s(con, 8192);
if (out_s == NULL)
{
return 1;
}
s_push_layer(out_s, iso_hdr, 8);
out_uint32_le(out_s, status); /* SCARD_S_SUCCESS status */
s_mark_end(out_s);
@ -960,6 +980,10 @@ scard_function_begin_transaction_return(void *user_data,
}
con = uds_client->con;
out_s = trans_get_out_s(con, 8192);
if (out_s == NULL)
{
return 1;
}
s_push_layer(out_s, iso_hdr, 8);
out_uint32_le(out_s, status); /* SCARD_S_SUCCESS status */
s_mark_end(out_s);
@ -1030,6 +1054,10 @@ scard_function_end_transaction_return(void *user_data,
con = uds_client->con;
out_s = trans_get_out_s(con, 8192);
if (out_s == NULL)
{
return 1;
}
s_push_layer(out_s, iso_hdr, 8);
out_uint32_le(out_s, status); /* SCARD_S_SUCCESS status */
s_mark_end(out_s);
@ -1179,6 +1207,10 @@ scard_function_transmit_return(void *user_data,
}
LOG_DEVEL(LOG_LEVEL_DEBUG, "scard_function_transmit_return: cbRecvLength %d", cbRecvLength);
out_s = trans_get_out_s(con, 8192);
if (out_s == NULL)
{
return 1;
}
s_push_layer(out_s, iso_hdr, 8);
out_uint32_le(out_s, recv_ior.dwProtocol);
out_uint32_le(out_s, recv_ior.cbPciLength);
@ -1274,6 +1306,10 @@ scard_function_control_return(void *user_data,
}
LOG_DEVEL(LOG_LEVEL_DEBUG, "scard_function_control_return: cbRecvLength %d", cbRecvLength);
out_s = trans_get_out_s(con, 8192);
if (out_s == NULL)
{
return 1;
}
s_push_layer(out_s, iso_hdr, 8);
out_uint32_le(out_s, cbRecvLength);
out_uint8a(out_s, recvBuf, cbRecvLength);
@ -1447,6 +1483,10 @@ scard_function_status_return(void *user_data,
"dwProtocol %d dwState %d name %s",
dwAtrLen, dwReaderLen, dwProtocol, dwState, lreader_name);
out_s = trans_get_out_s(con, 8192);
if (out_s == NULL)
{
return 1;
}
s_push_layer(out_s, iso_hdr, 8);
dwReaderLen = g_strlen(lreader_name);
out_uint32_le(out_s, dwReaderLen);
@ -1560,6 +1600,10 @@ scard_function_get_status_change_return(void *user_data,
con = uds_client->con;
out_s = trans_get_out_s(con, 8192);
if (out_s == NULL)
{
return 1;
}
s_push_layer(out_s, iso_hdr, 8);
if (status != 0)
{
@ -1650,6 +1694,10 @@ scard_function_cancel_return(void *user_data,
}
con = uds_client->con;
out_s = trans_get_out_s(con, 8192);
if (out_s == NULL)
{
return 1;
}
s_push_layer(out_s, iso_hdr, 8);
out_uint32_le(out_s, status); /* SCARD_S_SUCCESS status */
s_mark_end(out_s);