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MXS-2274 Prevent dynamic creation of object with invalid name

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Unfortunately there is not a single place where the name could be
validated, but it has to be done separately for each object type.
This commit is contained in:
Johan Wikman
2019-01-24 12:54:08 +02:00
parent 5afceb1185
commit 7d92717b66
2 changed files with 90 additions and 53 deletions
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47
server/core/config_runtime.cc
View File

@ -210,12 +210,15 @@ bool runtime_create_server(const char* name,
const char* port,
const char* protocol,
const char* authenticator,
bool serialize)
bool external)
{
std::lock_guard<std::mutex> guard(crt_lock);
bool rval = false;
if (Server::find_by_unique_name(name) == NULL)
{
std::string reason;
if (!external || config_is_valid_name(name, &reason))
{
if (protocol == NULL)
{
@ -245,7 +248,7 @@ bool runtime_create_server(const char* name,
Server* server = Server::server_alloc(name, ctx.parameters);
if (server && (!serialize || server->serialize()))
if (server && (!external || server->serialize()))
{
rval = true;
MXS_NOTICE("Created server '%s' at %s:%u",
@ -255,7 +258,8 @@ bool runtime_create_server(const char* name,
}
else
{
config_runtime_error("Failed to create server '%s', see error log for more details", name);
config_runtime_error("Failed to create server '%s', see error log for more details",
name);
}
config_parameter_free(ctx.parameters);
@ -266,6 +270,11 @@ bool runtime_create_server(const char* name,
}
}
else
{
config_runtime_error("%s", reason.c_str());
}
}
else
{
config_runtime_error("Server '%s' already exists", name);
}
@ -1071,6 +1080,7 @@ bool runtime_create_listener(Service* service,
bool rval = false;
std::lock_guard<std::mutex> guard(crt_lock);
std::string reason;
if (listener_find(name))
{
@ -1080,7 +1090,7 @@ bool runtime_create_listener(Service* service,
{
config_runtime_error("Listener '%s' already listens on [%s]:%u", l->name(), addr, u_port);
}
else
else if (config_is_valid_name(name, &reason))
{
SSL_LISTENER* ssl = NULL;
@ -1126,6 +1136,10 @@ bool runtime_create_listener(Service* service,
}
}
}
else
{
config_runtime_error("%s", reason.c_str());
}
return rval;
}
@ -1180,14 +1194,14 @@ bool runtime_create_monitor(const char* name, const char* module)
if (monitor_find(name) == NULL)
{
Monitor* monitor = monitor_repurpose_destroyed(name, module);
std::string reason;
if (monitor)
{
MXS_DEBUG("Repurposed monitor '%s'", name);
}
else
else if (config_is_valid_name(name, &reason))
{
MXS_CONFIG_PARAMETER* params;
bool ok;
@ -1203,6 +1217,10 @@ bool runtime_create_monitor(const char* name, const char* module)
config_parameter_free(params);
}
}
else
{
config_runtime_error("%s", reason.c_str());
}
if (monitor)
{
@ -1238,6 +1256,10 @@ bool runtime_create_filter(const char* name, const char* module, MXS_CONFIG_PARA
tie(ok, ctx.parameters) = load_defaults(module, MODULE_FILTER, CN_FILTER);
if (ok)
{
std::string reason;
if (config_is_valid_name(name, &reason))
{
for (MXS_CONFIG_PARAMETER* p = params; p; p = p->next)
{
@ -1251,6 +1273,11 @@ bool runtime_create_filter(const char* name, const char* module, MXS_CONFIG_PARA
config_parameter_free(ctx.parameters);
}
else
{
config_runtime_error("%s", reason.c_str());
}
}
if (filter)
{
@ -1307,6 +1334,9 @@ static bool runtime_create_service(const char* name, const char* router, MXS_CON
tie(ok, ctx.parameters) = load_defaults(router, MODULE_ROUTER, CN_SERVICE);
if (ok)
{
std::string reason;
if (config_is_valid_name(name, &reason))
{
for (MXS_CONFIG_PARAMETER* p = params; p; p = p->next)
{
@ -1320,6 +1350,11 @@ static bool runtime_create_service(const char* name, const char* router, MXS_CON
config_parameter_free(ctx.parameters);
}
else
{
config_runtime_error("%s", reason.c_str());
}
}
if (service)
{

4
server/core/internal/config_runtime.hh
View File

@ -51,6 +51,8 @@ void config_runtime_error(const char* fmt, ...) mxs_attribute((format (printf, 1
* @param port Network port
* @param protocol Protocol module name
* @param authenticator Authenticator module name
* @param external If true, the name will be validated and the created server
* serialized.
* @return True on success, false if an error occurred
*/
bool runtime_create_server(const char* name,
@ -58,7 +60,7 @@ bool runtime_create_server(const char* name,
const char* port,
const char* protocol,
const char* authenticator,
bool serialize = true);
bool external = true);
/**
* @brief Destroy a server