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#include "../module/module.h"
#include "../util.h"
#include "state.h"
#include <netgraph.h>
char const *Usage = "usage: %1$s start [name] [configuration]\n"
" %1$s stop [name] [configuration] [data]\n"
" %1$s get-endpoint [name] [configuration] [data] [interface]\n"
"unsupported commands: cmd mod\n";
static configuration Configuration;
static data Data;
static bool ConfigurationLoaded;
static bool DataLoaded;
// HELPERS
static void
Free_all(void)
{
if(ConfigurationLoaded == true) Free_configuration(&Configuration);
if(DataLoaded == true) Free_data(&Data);
}
static void
Load_configuration(ucl_object_t *root)
{
char *Error = Parse_configuration(&Configuration, root, "");
if(Error != NULL)
{
fprintf(stderr, "%s: configuration error: %s\n", Arg0, Error);
free(Error);
Free_all();
exit(-1);
}
ConfigurationLoaded = true;
}
static void
Load_data(ucl_object_t *root)
{
char *Error = Parse_data(&Data, root, "");
if(Error != NULL)
{
fprintf(stderr, "%s: data error: %s\n", Arg0, Error);
free(Error);
Free_all();
exit(-1);
}
DataLoaded = true;
// TODO: check that data matches configuration
}
// COMMANDS
int
start(char const *Name, ucl_object_t *configuration)
{
UNUSED(Name);
Load_configuration(configuration);
Data.ID = 0;
fd Control = -1;
if(NgMkSockNode(NULL, &Control, NULL) == -1)
{
fprintf(stderr, "Failed to create netgraph socket: %s\n", strerror(errno));
goto error;
}
if(Create_eiface(&Data.ID, Control) == -1) goto error;
char *InterfaceName = getifname(Data.ID, Control);
if(InterfaceName == NULL) goto error;
int Result = command("ifconfig", "ifconfig", InterfaceName, "name", Name, NULL);
free(InterfaceName);
if(Result == -1) goto error;
close(Control);
if(Configuration.inet != NULL) command("ifconfig", "ifconfig", Name, "inet", Configuration.inet, NULL);
jprint_state S;
bzero(&S, sizeof(S));
S.F = stdout;
Save_data(&S, &Data);
Free_all();
return 0;
error:
if(Data.ID != 0) DestroyNetgraphNode(Data.ID, Control);
if(Control != -1) close(Control);
Free_all();
return -1;
}
int
stop(char const *Name, ucl_object_t *configuration, ucl_object_t *data)
{
UNUSED(Name);
Load_configuration(configuration);
Load_data(data);
fd Control = -1;
if(NgMkSockNode(NULL, &Control, NULL) == -1)
{
fprintf(stderr, "Failed to create netgraph socket: %s\n", strerror(errno));
goto error;
}
if(DestroyNetgraphNode(Data.ID, Control) == -1) goto error;
Free_all();
return 0;
error:
Free_all();
return -1;
}
int
get_endpoint(char const *Name, ucl_object_t *configuration, ucl_object_t *data, char const *Interface)
{
UNUSED(Name);
Load_configuration(configuration);
Load_data(data);
if(*Interface != '\0')
{
fprintf(stderr, "%s provides only empty interface name\n", Arg0);
goto error;
}
jprint_state S;
bzero(&S, sizeof(S));
S.F = stdout;
JPrintObjectBegin(&S);
JPrintMember(&S, "address");
char Address[NG_PATHSIZ];
snprintf(Address, sizeof(Address), "[%x]:", Data.ID);
JPrint_string(&S, Address);
JPrintMember(&S, "hook");
JPrint_string(&S, "ether");
JPrintObjectEnd(&S);
Free_all();
return 0;
error:
Free_all();
return -1;
}
int
cmd(char const *Name, ucl_object_t *configuration, ucl_object_t *data, size_t ArgCount, char **Arg)
{
UNUSED(Name, ArgCount, Arg);
Load_configuration(configuration);
Load_data(data);
usage();
}
int
mod(char const *Name, ucl_object_t *configuration, ucl_object_t *data, size_t ArgCount, char **Arg)
{
UNUSED(Name, ArgCount, Arg);
Load_configuration(configuration);
Load_data(data);
usage();
}
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