Commit fcf7bfe2 authored by Nick Mathewson's avatar Nick Mathewson 👁
Browse files

Refactor directories; add unit tests; add router keyword


svn:r266
parent 03ed54e9
......@@ -63,7 +63,7 @@
char *v1=(expr1), *v2=(expr2); \
if(!strcmp(v1,v2)) { printf("."); } else { \
printf("\nFile %s: line %d (%s): Assertion failed: (%s==%s)\n"\
" (%s != %s)\n", \
" (\"%s\" != \"%s\")\n", \
__FILE__, \
__LINE__, \
__PRETTY_FUNCTION__, \
......@@ -77,7 +77,7 @@
char *v1=(expr1), *v2=(expr2); \
if(strcmp(v1,v2)) { printf("."); } else { \
printf("\nFile %s: line %d (%s): Assertion failed: (%s!=%s)\n"\
" (%s == %s)\n", \
" (\"%s\" == \"%s\")\n", \
__FILE__, \
__LINE__, \
__PRETTY_FUNCTION__, \
......
......@@ -7,7 +7,7 @@
# DirPort is where the router listens for directory download requests
# Router 1
moria.mit.edu 9001 9011 9021 9031 1000000
router moria.mit.edu 9001 9011 9021 9031 1000000
-----BEGIN RSA PUBLIC KEY-----
MIGJAoGBAMBBuk1sYxEg5jLAJy86U3GGJ7EGMSV7yoA6mmcsEVU3pwTUrpbpCmwS
7BvovoY3z4zk63NZVBErgKQUDkn3pp8n83xZgEf4GI27gdWIIwaBjEimuJlEY+7K
......@@ -15,7 +15,7 @@ nZ7kVMRoiXCbjL6VAtNa4Zy1Af/GOm0iCIDpholeujQ95xew7rQnAgMA//8=
-----END RSA PUBLIC KEY-----
# Router 2
moria.mit.edu 9002 9012 9022 9032 1000000
router moria.mit.edu 9002 9012 9022 9032 1000000
-----BEGIN RSA PUBLIC KEY-----
MIGJAoGBANX/HHRuudz274MFSQ4manX8DhtsIuogNUyco9/0dr+XsfioTGd3RgMj
aSWlD87arkZO4hHBPHe0q89Z3s1UtUsyQ/VmsxSv9g2OCnF/dU2Nz4h6+Al3iNJF
......@@ -23,7 +23,7 @@ aSWlD87arkZO4hHBPHe0q89Z3s1UtUsyQ/VmsxSv9g2OCnF/dU2Nz4h6+Al3iNJF
-----END RSA PUBLIC KEY-----
# Router 3
moria.mit.edu 9003 9013 9023 9033 1000000
router moria.mit.edu 9003 9013 9023 9033 1000000
-----BEGIN RSA PUBLIC KEY-----
MIGJAoGBAJfkNWCaNkYIRwfHT06KBU6dz8W1xDpW5ezGJwAOoxCX3/ZNoUicb/1V
oB3OzW6VxWIiht3da/3K0ywiBOOCcf6BabKoMdiPpH7NIeu6XRmBYK2uqW13gBgh
......
......@@ -7,7 +7,7 @@
# DirPort is where the router listens for directory download requests
# Router 1
moria.mit.edu 9001 9011 9021 9031 1000000
router moria.mit.edu 9001 9011 9021 9031 1000000
-----BEGIN RSA PUBLIC KEY-----
MIGJAoGBAMBBuk1sYxEg5jLAJy86U3GGJ7EGMSV7yoA6mmcsEVU3pwTUrpbpCmwS
7BvovoY3z4zk63NZVBErgKQUDkn3pp8n83xZgEf4GI27gdWIIwaBjEimuJlEY+7K
......@@ -15,7 +15,7 @@ nZ7kVMRoiXCbjL6VAtNa4Zy1Af/GOm0iCIDpholeujQ95xew7rQnAgMA//8=
-----END RSA PUBLIC KEY-----
# Router 2
moria.mit.edu 9002 9012 9022 9032 1000000
router moria.mit.edu 9002 9012 9022 9032 1000000
-----BEGIN RSA PUBLIC KEY-----
MIGJAoGBANX/HHRuudz274MFSQ4manX8DhtsIuogNUyco9/0dr+XsfioTGd3RgMj
aSWlD87arkZO4hHBPHe0q89Z3s1UtUsyQ/VmsxSv9g2OCnF/dU2Nz4h6+Al3iNJF
......@@ -23,28 +23,28 @@ aSWlD87arkZO4hHBPHe0q89Z3s1UtUsyQ/VmsxSv9g2OCnF/dU2Nz4h6+Al3iNJF
-----END RSA PUBLIC KEY-----
# Router 3
moria.mit.edu 9003 9013 9023 9033 1000000
router moria.mit.edu 9003 9013 9023 9033 1000000
-----BEGIN RSA PUBLIC KEY-----
MIGJAoGBAJfkNWCaNkYIRwfHT06KBU6dz8W1xDpW5ezGJwAOoxCX3/ZNoUicb/1V
oB3OzW6VxWIiht3da/3K0ywiBOOCcf6BabKoMdiPpH7NIeu6XRmBYK2uqW13gBgh
xJbQBb58Nx8Fr05XkvLG6i+vTDY3MZOW3E2/DwSe/jFzuHSD5b3nAgMA//8=
-----END RSA PUBLIC KEY-----
moria.mit.edu 9004 9014 9024 0 1000000
router moria.mit.edu 9004 9014 9024 0 1000000
-----BEGIN RSA PUBLIC KEY-----
MIGJAoGBAKD2BDZQpGq/aAbZ7t+/7qktZVEbhUGe097gIjWH9gXcIOIm0CJMe3rN
MsBJsQMi5Uwqrz+Invb5n6bswrNlJp/bCKBhGTvUCfxg7c8xZy71PPSIPnTg1qXl
p5fyAkgCYkZNgEEZzQDHv1GRvLCs92kURjSJE5y8QU0dXfbzms8PAgMA//8=
-----END RSA PUBLIC KEY-----
mosg.cl.cam.ac.uk 9005 9015 9025 0 1000000
router mosg.cl.cam.ac.uk 9005 9015 9025 0 1000000
-----BEGIN RSA PUBLIC KEY-----
MIGJAoGBAMMHEjhhawM6S14ETFVcvByU7D/baN2JMcCweKKJ7zcSurDnpgRH/Uo7
05+bZE3BCy4OkAqQbGlKd/ejBOuXjEtS0mJo5xwDX9StKguhgFRk60hhrF2OFJm4
VLItXA6U2NLOrc+FBCv/9laLpBrxOb8Wuct0l/lyZ2/OfE9yYhC3AgMA//8=
-----END RSA PUBLIC KEY-----
66.17.17.207 9006 9016 9026 0 1000000
router 66.17.17.207 9006 9016 9026 0 1000000
-----BEGIN RSA PUBLIC KEY-----
MIGJAoGBAL5cpmH34kVfmHd+A00vMton3pLGHAVf7BYkSMif8e/O5zXTUXRi4w78
jDcGNo2yFM3htTpT5/tWs/Z2+B/mx8Kz+AhHzZ9z0PdQreDSqxXjF+jmfCyx9Teq
......
......@@ -565,7 +565,7 @@ int dump_router_to_string(char *s, int maxlen, routerinfo_t *router) {
return 0;
}
result = snprintf(s, maxlen, "%s %d %d %d %d %d\n%s",
result = snprintf(s, maxlen, "router %s %d %d %d %d %d\n%s",
router->address,
router->or_port,
router->op_port,
......
......@@ -347,6 +347,7 @@ crypt_path_t *onion_generate_cpath(routerinfo_t **firsthop) {
int routelen; /* length of the route */
unsigned int *route; /* hops in the route as an array of indexes into rarray */
crypt_path_t *cpath=NULL;
directory_t *dir;
routerinfo_t **rarray;
int rarray_len;
int i;
......@@ -354,7 +355,9 @@ crypt_path_t *onion_generate_cpath(routerinfo_t **firsthop) {
routerinfo_t *router;
struct in_addr netaddr;
router_get_rarray(&rarray, &rarray_len);
router_get_directory(&dir);
rarray = dir->routers;
rarray_len = dir->n_routers;
/* choose a route */
route = new_route(options.CoinWeight, rarray, rarray_len, &routelen);
......
......@@ -328,6 +328,11 @@ typedef struct {
void *next;
} routerinfo_t;
typedef struct {
routerinfo_t **routers;
int n_routers;
} directory_t;
struct crypt_path_t {
/* crypto environments */
......@@ -779,11 +784,13 @@ int learn_my_address(struct sockaddr_in *me);
void router_retry_connections(void);
routerinfo_t *router_pick_directory_server(void);
routerinfo_t *router_get_by_addr_port(uint32_t addr, uint16_t port);
void router_get_rarray(routerinfo_t ***prouter_array, int *prarray_len);
void router_get_directory(directory_t **pdirectory);
int router_is_me(uint32_t addr, uint16_t port);
void router_forget_router(uint32_t addr, uint16_t port);
int router_get_list_from_file(char *routerfile);
int router_get_list_from_string(char *s);
int router_get_list_from_string_impl(char *s, directory_t **dest);
routerinfo_t *router_get_entry_from_string(char **s);
int router_compare_to_exit_policy(connection_t *conn);
......
......@@ -9,8 +9,7 @@
/****************************************************************************/
/* router array */
static routerinfo_t **router_array = NULL;
static int rarray_len = 0;
static directory_t *directory = NULL;
extern or_options_t options; /* command-line and config-file options */
extern routerinfo_t *my_routerinfo; /* from main.c */
......@@ -22,7 +21,7 @@ static void routerlist_free(routerinfo_t *list);
static routerinfo_t **make_rarray(routerinfo_t* list, int *len);
static char *eat_whitespace(char *s);
static char *find_whitespace(char *s);
static routerinfo_t *router_get_entry_from_string(char **s);
static int router_resolve(routerinfo_t *router);
static void router_add_exit_policy(routerinfo_t *router, char *string);
static void router_free_exit_policy(routerinfo_t *router);
......@@ -57,8 +56,8 @@ void router_retry_connections(void) {
int i;
routerinfo_t *router;
for (i=0;i<rarray_len;i++) {
router = router_array[i];
for (i=0;i<directory->n_routers;i++) {
router = directory->routers[i];
if(!connection_exact_get_by_addr_port(router->addr,router->or_port)) { /* not in the list */
log(LOG_DEBUG,"retry_all_connections(): connecting to OR %s:%u.",router->address,router->or_port);
connection_or_connect_as_or(router);
......@@ -71,11 +70,11 @@ routerinfo_t *router_pick_directory_server(void) {
int i;
routerinfo_t *router;
if(!router_array)
if(!directory)
return NULL;
for(i=0;i<rarray_len;i++) {
router = router_array[i];
for(i=0;i<directory->n_routers;i++) {
router = directory->routers[i];
if(router->dir_port > 0)
return router;
}
......@@ -87,10 +86,10 @@ routerinfo_t *router_get_by_addr_port(uint32_t addr, uint16_t port) {
int i;
routerinfo_t *router;
assert(router_array);
assert(directory);
for(i=0;i<rarray_len;i++) {
router = router_array[i];
for(i=0;i<directory->n_routers;i++) {
router = directory->routers[i];
if ((router->addr == addr) && (router->or_port == port))
return router;
}
......@@ -98,9 +97,8 @@ routerinfo_t *router_get_by_addr_port(uint32_t addr, uint16_t port) {
return NULL;
}
void router_get_rarray(routerinfo_t ***prouter_array, int *prarray_len) {
*prouter_array = router_array;
*prarray_len = rarray_len;
void router_get_directory(directory_t **pdirectory) {
*pdirectory = directory;
}
/* return 1 if addr and port corresponds to my addr and my or_listenport. else 0,
......@@ -129,6 +127,7 @@ int router_is_me(uint32_t addr, uint16_t port)
static void routerlist_free(routerinfo_t *list)
{
routerinfo_t *tmp = NULL;
struct exit_policy_t *e = NULL, *etmp = NULL;
if (!list)
return;
......@@ -136,8 +135,19 @@ static void routerlist_free(routerinfo_t *list)
do
{
tmp=list->next;
free((void *)list->address);
crypto_free_pk_env(list->pkey);
if (list->address)
free((void *)list->address);
if (list->pkey)
crypto_free_pk_env(list->pkey);
e = list->exit_policy;
while (e) {
etmp = e->next;
if (e->string) free(e->string);
if (e->address) free(e->address);
if (e->port) free(e->port);
free(e);
e = etmp;
}
free((void *)list);
list = tmp;
}
......@@ -153,6 +163,12 @@ void rarray_free(routerinfo_t **list) {
free(list);
}
void directory_free(directory_t *directory)
{
rarray_free(directory->routers);
free(directory);
}
void router_forget_router(uint32_t addr, uint16_t port) {
int i;
routerinfo_t *router;
......@@ -162,17 +178,17 @@ void router_forget_router(uint32_t addr, uint16_t port) {
return;
/* now walk down router_array until we get to router */
for(i=0;i<rarray_len;i++)
if(router_array[i] == router)
for(i=0;i<directory->n_routers;i++)
if(directory->routers[i] == router)
break;
assert(i != rarray_len); /* if so then router_get_by_addr_port should have returned null */
assert(i != directory->n_routers); /* if so then router_get_by_addr_port should have returned null */
// free(router); /* don't actually free; we'll free it when we free the whole thing */
// log(LOG_DEBUG,"router_forget_router(): Forgot about router %d:%d",addr,port);
for(; i<rarray_len-1;i++)
router_array[i] = router_array[i+1];
for(; i<directory->n_routers-1;i++)
directory->routers[i] = directory->routers[i+1];
}
/* create a NULL-terminated array of pointers pointing to elements of a router list */
......@@ -272,7 +288,13 @@ int router_get_list_from_file(char *routerfile)
return 0;
}
int router_get_list_from_string(char *s) {
int router_get_list_from_string(char *s)
{
return router_get_list_from_string_impl(s, &directory);
}
int router_get_list_from_string_impl(char *s, directory_t **dest)
{
routerinfo_t *routerlist=NULL;
routerinfo_t *router;
routerinfo_t **new_router_array;
......@@ -286,6 +308,11 @@ int router_get_list_from_string(char *s) {
routerlist_free(routerlist);
return -1;
}
if (router_resolve(router)) {
routerlist_free(router);
routerlist_free(routerlist);
return -1;
}
switch(router_is_me(router->addr, router->or_port)) {
case 0: /* it's not me */
router->next = routerlist;
......@@ -307,9 +334,11 @@ int router_get_list_from_string(char *s) {
new_router_array = make_rarray(routerlist, &new_rarray_len);
if(new_router_array) { /* success! replace the old one */
rarray_free(router_array); /* free the old one first */
router_array = new_router_array;
rarray_len = new_rarray_len;
if (*dest)
directory_free(*dest);
*dest = (directory_t*) malloc(sizeof(directory_t));
(*dest)->routers = new_router_array;
(*dest)->n_routers = new_rarray_len;
return 0;
}
return -1;
......@@ -342,14 +371,38 @@ static char *find_whitespace(char *s) {
return s;
}
static int
router_resolve(routerinfo_t *router)
{
struct hostent *rent;
rent = (struct hostent *)gethostbyname(router->address);
if (!rent) {
log(LOG_ERR,"router_resolve(): Could not get address for router %s.",router->address);
return -1;
}
assert(rent->h_length == 4);
memcpy(&router->addr, rent->h_addr,rent->h_length);
router->addr = ntohl(router->addr); /* get it back into host order */
return 0;
}
/* reads a single router entry from s.
* updates s so it points to after the router it just read.
* mallocs a new router, returns it if all goes well, else returns NULL.
*/
static routerinfo_t *router_get_entry_from_string(char **s) {
routerinfo_t *router_get_entry_from_string(char **s) {
routerinfo_t *router;
char *next;
struct hostent *rent;
/* Make sure that this string really starts with a router entry. */
*s = eat_whitespace(*s);
if (strncasecmp(*s, "router ", 7)) {
log(LOG_ERR,"router_get_entry_from_string(): Entry does not start with \"router\"");
return NULL;
}
puts("X");
router = malloc(sizeof(routerinfo_t));
if (!router) {
......@@ -357,6 +410,7 @@ static routerinfo_t *router_get_entry_from_string(char **s) {
return NULL;
}
memset(router,0,sizeof(routerinfo_t)); /* zero it out first */
router->next = NULL;
/* Bug: if find_whitespace returns a '#', we'll squish it. */
#define NEXT_TOKEN(s, next) \
......@@ -367,19 +421,17 @@ static routerinfo_t *router_get_entry_from_string(char **s) {
} \
*next = 0;
/* Skip the "router" */
NEXT_TOKEN(s, next);
*s = next+1;
/* read router->address */
NEXT_TOKEN(s, next);
router->address = strdup(*s);
*s = next+1;
rent = (struct hostent *)gethostbyname(router->address);
if (!rent) {
log(LOG_ERR,"router_get_entry_from_string(): Could not get address for router %s.",router->address);
goto router_read_failed;
}
assert(rent->h_length == 4);
memcpy(&router->addr, rent->h_addr,rent->h_length);
router->addr = ntohl(router->addr); /* get it back into host order */
/* Don't resolve address till later. */
router->addr = 0;
/* read router->or_port */
NEXT_TOKEN(s, next);
......
......@@ -462,8 +462,6 @@ test_util() {
void
test_onion_handshake() {
int i;
/* client-side */
crypto_dh_env_t *c_dh = NULL;
char c_buf[DH_ONIONSKIN_LEN];
......@@ -500,6 +498,114 @@ test_onion_handshake() {
test_memneq(c_keys, s_buf, 40);
}
/* from main.c */
int dump_router_to_string(char *s, int maxlen, routerinfo_t *router);
void dump_directory_to_string(char *s, int maxlen);
void
test_dir_format()
{
char buf[2048], buf2[512];
char *pk1_str, *pk2_str, *cp;
int pk1_str_len, pk2_str_len;
routerinfo_t r1, r2;
crypto_pk_env_t *pk1 = NULL, *pk2 = NULL;
routerinfo_t *rp1, *rp2;
struct exit_policy_t ex1, ex2, ex3;
int i;
test_assert( (pk1 = crypto_new_pk_env(CRYPTO_PK_RSA)) );
test_assert( (pk2 = crypto_new_pk_env(CRYPTO_PK_RSA)) );
test_assert(! crypto_pk_generate_key(pk1));
test_assert(! crypto_pk_generate_key(pk2));
r1.address = "testaddr1.foo.bar";
r1.addr = 0xc0a80001u; /* 192.168.0.1 */
r1.or_port = 9000;
r1.op_port = 9001;
r1.ap_port = 9002;
r1.dir_port = 9003;
r1.pkey = pk1;
r1.bandwidth = 1000;
r1.exit_policy = NULL;
r1.next = &r2;
ex1.policy_type = EXIT_POLICY_ACCEPT;
ex1.string = NULL;
ex1.address = "*";
ex1.port = "80";
ex1.next = &ex2;
ex2.policy_type = EXIT_POLICY_REJECT;
ex2.address = "18.*";
ex2.port = "24";
ex2.next = NULL;
r2.address = "tor.tor.tor";
r2.addr = 0x0a030201u; /* 10.3.2.1 */
r2.or_port = 9005;
r2.op_port = 0;
r2.ap_port = 0;
r2.dir_port = 0;
r2.pkey = pk2;
r2.bandwidth = 3000;
r2.exit_policy = &ex1;
r2.next = NULL;
test_assert(!crypto_pk_write_public_key_to_string(pk1, &pk1_str,
&pk1_str_len));
test_assert(!crypto_pk_write_public_key_to_string(pk2 , &pk2_str,
&pk2_str_len));
strcpy(buf2, "router testaddr1.foo.bar 9000 9001 9002 9003 1000\n");
strcat(buf2, pk1_str);
strcat(buf2, "\n");
memset(buf, 0, 2048);
test_assert(dump_router_to_string(buf, 2048, &r1)>0);
test_streq(buf, buf2);
cp = buf;
rp1 = router_get_entry_from_string(&cp);
test_assert(rp1);
test_streq(rp1->address, r1.address);
test_eq(rp1->or_port, r1.or_port);
test_eq(rp1->op_port, r1.op_port);
test_eq(rp1->ap_port, r1.ap_port);
test_eq(rp1->dir_port, r1.dir_port);
test_eq(rp1->bandwidth, r1.bandwidth);
test_assert(crypto_pk_cmp_keys(rp1->pkey, pk1) == 0);
test_assert(rp1->exit_policy == NULL);
strcpy(buf2, "router tor.tor.tor 9005 0 0 0 3000\n");
strcat(buf2, pk2_str);
strcat(buf2, "accept *:80\nreject 18.*:24\n\n");
test_assert(dump_router_to_string(buf, 2048, &r2)>0);
test_streq(buf, buf2);
cp = buf;
rp2 = router_get_entry_from_string(&cp);
test_assert(rp2);
test_streq(rp2->address, r2.address);
test_eq(rp2->or_port, r2.or_port);
test_eq(rp2->op_port, r2.op_port);
test_eq(rp2->ap_port, r2.ap_port);
test_eq(rp2->dir_port, r2.dir_port);
test_eq(rp2->bandwidth, r2.bandwidth);
test_assert(crypto_pk_cmp_keys(rp2->pkey, pk2) == 0);
test_eq(rp2->exit_policy->policy_type, EXIT_POLICY_ACCEPT);
test_streq(rp2->exit_policy->string, "accept *:80");
test_streq(rp2->exit_policy->address, "*");
test_streq(rp2->exit_policy->port, "80");
test_eq(rp2->exit_policy->next->policy_type, EXIT_POLICY_REJECT);
test_streq(rp2->exit_policy->next->string, "reject 18.*:24");
test_streq(rp2->exit_policy->next->address, "18.*");
test_streq(rp2->exit_policy->next->port, "24");
test_assert(rp2->exit_policy->next->next == NULL);
/* XXXX free everything*/
}
int
main(int c, char**v) {
#if 0
......@@ -511,6 +617,7 @@ main(int c, char**v) {
log(LOG_ERR,NULL); /* make logging quieter */
setup_directory();
#if 1
puts("========================== Buffers =========================");
test_buffers();
puts("========================== Crypto ==========================");
......@@ -518,8 +625,11 @@ main(int c, char**v) {
test_crypto();
puts("\n========================= Util ============================");
test_util();
puts("\n========================= Onion Skins======================");
puts("\n========================= Onion Skins =====================");
test_onion_handshake();
#endif
puts("\n========================= Directory Formats ===============");
test_dir_format();
puts("");
return 0;
}
......
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