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Fix #4597: Do string argument checks before a possible strtol

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strtol sets errno, which must be reset if it is no abort condition.
Invert the comparisons to avoid that.
This commit is contained in:
Armin Novak 2018-05-02 12:57:34 +02:00
parent fbb21e3499
commit 1fd5c53a74
1 changed files with 37 additions and 38 deletions
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27
client/common/cmdline.c
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@ -1965,15 +1965,9 @@ int freerdp_client_settings_parse_command_line_arguments(rdpSettings* settings,
}
CommandLineSwitchCase(arg, "gateway-usage-method")
{
long type;
long type = 0;
char* pEnd;
type = strtol(arg->Value, &pEnd, 10);
if (errno != 0)
return COMMAND_LINE_ERROR_UNEXPECTED_VALUE;
if (type == 0)
{
if (_stricmp(arg->Value, "none") == 0)
type = TSC_PROXY_MODE_NONE_DIRECT;
else if (_stricmp(arg->Value, "direct") == 0)
@ -1982,6 +1976,11 @@ int freerdp_client_settings_parse_command_line_arguments(rdpSettings* settings,
type = TSC_PROXY_MODE_DETECT;
else if (_stricmp(arg->Value, "default") == 0)
type = TSC_PROXY_MODE_DEFAULT;
else
{
type = strtol(arg->Value, &pEnd, 10);
if (errno != 0)
return COMMAND_LINE_ERROR_UNEXPECTED_VALUE;
}
freerdp_set_gateway_usage_method(settings, (UINT32) type);
@ -2110,15 +2109,9 @@ int freerdp_client_settings_parse_command_line_arguments(rdpSettings* settings,
}
CommandLineSwitchCase(arg, "network")
{
long type;
long type = 0;
char* pEnd;
type = strtol(arg->Value, &pEnd, 10);
if (errno != 0)
return COMMAND_LINE_ERROR_UNEXPECTED_VALUE;
if (type == 0)
{
if (_stricmp(arg->Value, "modem") == 0)
type = CONNECTION_TYPE_MODEM;
else if (_stricmp(arg->Value, "broadband") == 0)
@ -2137,6 +2130,12 @@ int freerdp_client_settings_parse_command_line_arguments(rdpSettings* settings,
{
type = CONNECTION_TYPE_AUTODETECT;
}
else
{
type = strtol(arg->Value, &pEnd, 10);
if (errno != 0)
return COMMAND_LINE_ERROR_UNEXPECTED_VALUE;
}
if (!freerdp_set_connection_type(settings, type))