diff options
Diffstat (limited to 'src/gateway/dlt_gateway.c')
| -rw-r--r-- | src/gateway/dlt_gateway.c | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/src/gateway/dlt_gateway.c b/src/gateway/dlt_gateway.c index 6b7a629..1dde171 100644 --- a/src/gateway/dlt_gateway.c +++ b/src/gateway/dlt_gateway.c @@ -96,18 +96,25 @@ DLT_STATIC DltReturnValue dlt_gateway_check_ip(DltGatewayConnection *con, char * DLT_STATIC DltReturnValue dlt_gateway_check_port(DltGatewayConnection *con, char *value) { - int tmp = -1; + long int tmp = -1; if ((con == NULL) || (value == NULL)) { dlt_vlog(LOG_ERR, "%s: wrong parameter\n", __func__); return DLT_RETURN_WRONG_PARAMETER; } - tmp = (int)strtol(value, NULL, 10); + errno = 0; + tmp = strtol(value, NULL, 10); + if ((errno == ERANGE && (tmp == LONG_MAX || tmp == LONG_MIN)) + || (errno != 0 && tmp == 0)) { + dlt_vlog(LOG_ERR, "%s: cannot convert port number\n", __func__); + return DLT_RETURN_ERROR; + } /* port ranges for unprivileged applications */ - if ((tmp > IPPORT_RESERVED) && (tmp <= USHRT_MAX)) { - con->port = tmp; + if ((tmp > IPPORT_RESERVED) && ((unsigned)tmp <= USHRT_MAX)) + { + con->port = (int)tmp; return DLT_RETURN_OK; } else { |