torproject/tor
1
0
Fork 0
mirror of https://gitlab.torproject.org/tpo/core/tor.git synced 2024-12-06 19:41:15 +01:00
Code Issues Actions Packages Projects Releases Wiki Activity

break routers.c into router.c for stuff the router does,

Browse Source 
and routerlist.c for handling routerlist.


svn:r887
This commit is contained in:
Roger Dingledine
2003-12-06 05:54:04 +00:00
parent ef10ea41af
commit 79dc5ab0ea
6 changed files with 558 additions and 539 deletions
Download Patch File Download Diff File Expand all files Collapse all files
trunk/src/or/Makefile.am
+2 -2
View File
@@ -6,14 +6,14 @@ bin_PROGRAMS = tor
tor_SOURCES = buffers.c circuit.c command.c connection.c \
connection_or.c config.c dirserv.c \
onion.c routers.c directory.c dns.c connection_edge.c \
onion.c router.c routerlist.c directory.c dns.c connection_edge.c \
cpuworker.c main.c tor_main.c
tor_LDADD = ../common/libor.a
test_SOURCES = buffers.c circuit.c command.c connection.c \
connection_or.c config.c dirserv.c \
onion.c routers.c directory.c dns.c connection_edge.c \
onion.c router.c routerlist.c directory.c dns.c connection_edge.c \
cpuworker.c main.c test.c
test_LDADD = ../common/libor.a
trunk/src/or/main.c
-202
View File
@@ -34,42 +34,8 @@ static int please_reset=0; /* whether we just got a sighup */
static int please_reap_children=0; /* whether we should waitpid for exited children */
#endif /* signal stuff */
/* private keys */
static crypto_pk_env_t *onionkey=NULL;
static crypto_pk_env_t *linkkey=NULL;
static crypto_pk_env_t *identitykey=NULL;
/********* END VARIABLES ************/
void set_onion_key(crypto_pk_env_t *k) {
onionkey = k;
}
crypto_pk_env_t *get_onion_key(void) {
assert(onionkey);
return onionkey;
}
void set_link_key(crypto_pk_env_t *k)
{
linkkey = k;
}
crypto_pk_env_t *get_link_key(void)
{
assert(linkkey);
return linkkey;
}
void set_identity_key(crypto_pk_env_t *k) {
identitykey = k;
}
crypto_pk_env_t *get_identity_key(void) {
assert(identitykey);
return identitykey;
}
/****************************************************************************
*
* This section contains accessors and other methods on the connection_array
@@ -427,174 +393,6 @@ static int prepare_for_poll(void) {
return (1000 - (now.tv_usec / 1000)); /* how many milliseconds til the next second? */
}
static crypto_pk_env_t *init_key_from_file(const char *fname)
{
crypto_pk_env_t *prkey = NULL;
int fd = -1;
FILE *file = NULL;
if (!(prkey = crypto_new_pk_env(CRYPTO_PK_RSA))) {
log(LOG_ERR, "Error creating crypto environment.");
goto error;
}
switch(file_status(fname)) {
case FN_DIR:
case FN_ERROR:
log(LOG_ERR, "Can't read key from %s", fname);
goto error;
case FN_NOENT:
log(LOG_INFO, "No key found in %s; generating fresh key.", fname);
if (crypto_pk_generate_key(prkey)) {
log(LOG_ERR, "Error generating key: %s", crypto_perror());
goto error;
}
if (crypto_pk_check_key(prkey) <= 0) {
log(LOG_ERR, "Generated key seems invalid");
goto error;
}
log(LOG_INFO, "Generated key seems valid");
if (crypto_pk_write_private_key_to_filename(prkey, fname)) {
log(LOG_ERR, "Couldn't write generated key to %s.", fname);
goto error;
}
return prkey;
case FN_FILE:
if (crypto_pk_read_private_key_from_filename(prkey, fname)) {
log(LOG_ERR, "Error loading private key.");
goto error;
}
return prkey;
default:
assert(0);
}
error:
if (prkey)
crypto_free_pk_env(prkey);
if (fd >= 0 && !file)
close(fd);
if (file)
fclose(file);
return NULL;
}
static int init_keys(void)
{
char keydir[512];
char fingerprint[FINGERPRINT_LEN+MAX_NICKNAME_LEN+3];
char *cp;
const char *tmp, *mydesc;
crypto_pk_env_t *prkey;
/* OP's don't need keys. Just initialize the TLS context.*/
if (!options.ORPort) {
assert(!options.DirPort);
if (tor_tls_context_new(NULL, 0, NULL)<0) {
log_fn(LOG_ERR, "Error creating TLS context for OP.");
return -1;
}
return 0;
}
assert(options.DataDirectory);
if (strlen(options.DataDirectory) > (512-128)) {
log_fn(LOG_ERR, "DataDirectory is too long.");
return -1;
}
if (check_private_dir(options.DataDirectory, 1)) {
return -1;
}
sprintf(keydir,"%s/keys",options.DataDirectory);
if (check_private_dir(keydir, 1)) {
return -1;
}
cp = keydir + strlen(keydir); /* End of string. */
/* 1. Read identity key. Make it if none is found. */
strcpy(cp, "/identity.key");
log_fn(LOG_INFO,"Reading/making identity key %s...",keydir);
prkey = init_key_from_file(keydir);
if (!prkey) return -1;
set_identity_key(prkey);
/* 2. Read onion key. Make it if none is found. */
strcpy(cp, "/onion.key");
log_fn(LOG_INFO,"Reading/making onion key %s...",keydir);
prkey = init_key_from_file(keydir);
if (!prkey) return -1;
set_onion_key(prkey);
/* 3. Initialize link key and TLS context. */
strcpy(cp, "/link.key");
log_fn(LOG_INFO,"Reading/making link key %s...",keydir);
prkey = init_key_from_file(keydir);
if (!prkey) return -1;
set_link_key(prkey);
if (tor_tls_context_new(prkey, 1, options.Nickname) < 0) {
log_fn(LOG_ERR, "Error initializing TLS context");
return -1;
}
/* 4. Dump router descriptor to 'router.desc' */
/* Must be called after keys are initialized. */
if (!(router_get_my_descriptor())) {
log_fn(LOG_ERR, "Error initializing descriptor.");
return -1;
}
/* We need to add our own fingerprint so it gets recognized. */
if (dirserv_add_own_fingerprint(options.Nickname, get_identity_key())) {
log_fn(LOG_ERR, "Error adding own fingerprint to approved set");
return -1;
}
tmp = mydesc = router_get_my_descriptor();
if (dirserv_add_descriptor(&tmp)) {
log(LOG_ERR, "Unable to add own descriptor to directory.");
return -1;
}
sprintf(keydir,"%s/router.desc", options.DataDirectory);
log_fn(LOG_INFO,"Dumping descriptor to %s...",keydir);
if (write_str_to_file(keydir, mydesc)) {
return -1;
}
/* 5. Dump fingerprint to 'fingerprint' */
sprintf(keydir,"%s/fingerprint", options.DataDirectory);
log_fn(LOG_INFO,"Dumping fingerprint to %s...",keydir);
assert(strlen(options.Nickname) <= MAX_NICKNAME_LEN);
strcpy(fingerprint, options.Nickname);
strcat(fingerprint, " ");
if (crypto_pk_get_fingerprint(get_identity_key(),
fingerprint+strlen(fingerprint))<0) {
log_fn(LOG_ERR, "Error computing fingerprint");
return -1;
}
strcat(fingerprint, "\n");
if (write_str_to_file(keydir, fingerprint))
return -1;
if(!options.DirPort)
return 0;
/* 6. [dirserver only] load approved-routers file */
sprintf(keydir,"%s/approved-routers", options.DataDirectory);
log_fn(LOG_INFO,"Loading approved fingerprints from %s...",keydir);
if(dirserv_parse_fingerprint_file(keydir) < 0) {
log_fn(LOG_ERR, "Error loading fingerprints");
return -1;
}
/* 7. [dirserver only] load old directory, if it's there */
sprintf(keydir,"%s/cached-directory", options.DataDirectory);
log_fn(LOG_INFO,"Loading cached directory from %s...",keydir);
cp = read_file_to_str(keydir);
if(!cp) {
log_fn(LOG_INFO,"Cached directory %s not present. Ok.",keydir);
} else {
if(dirserv_init_from_directory_string(cp) < 0) {
log_fn(LOG_ERR, "Cached directory %s is corrupt", keydir);
free(cp);
return -1;
}
free(cp);
}
/* success */
return 0;
}
static int init_from_config(int argc, char **argv) {
static int have_daemonized=0;
trunk/src/or/onion.c
+4 -4
View File
@@ -383,16 +383,16 @@ static routerinfo_t *choose_good_exit_server(routerlist_t *dir)
}
cpath_build_state_t *onion_new_cpath_build_state(void) {
routerlist_t *dir;
routerlist_t *rl;
int r;
cpath_build_state_t *info;
routerinfo_t *exit;
router_get_routerlist(&dir);
r = new_route_len(options.PathlenCoinWeight, dir->routers, dir->n_routers);
router_get_routerlist(&rl);
r = new_route_len(options.PathlenCoinWeight, rl->routers, rl->n_routers);
if (r < 0)
return NULL;
exit = choose_good_exit_server(dir);
exit = choose_good_exit_server(rl);
if(!exit)
return NULL;
info = tor_malloc(sizeof(cpath_build_state_t));
trunk/src/or/or.h
+24 -30
View File
@@ -674,11 +674,6 @@ int dns_resolve(connection_t *exitconn);
/********************************* main.c ***************************/
void set_onion_key(crypto_pk_env_t *k);
crypto_pk_env_t *get_onion_key(void);
void set_identity_key(crypto_pk_env_t *k);
crypto_pk_env_t *get_identity_key(void);
crypto_pk_env_t *get_link_key(void);
int connection_add(connection_t *conn);
int connection_remove(connection_t *conn);
void connection_set_poll_socket(connection_t *conn);
@@ -692,8 +687,6 @@ void connection_start_reading(connection_t *conn);
void connection_stop_writing(connection_t *conn);
void connection_start_writing(connection_t *conn);
const char *router_get_my_descriptor(void);
int main(int argc, char *argv[]);
/********************************* onion.c ***************************/
@@ -728,44 +721,45 @@ int onion_skin_client_handshake(crypto_dh_env_t *handshake_state,
cpath_build_state_t *onion_new_cpath_build_state(void);
/********************************* routers.c ***************************/
/********************************* router.c ***************************/
void set_onion_key(crypto_pk_env_t *k);
crypto_pk_env_t *get_onion_key(void);
void set_identity_key(crypto_pk_env_t *k);
crypto_pk_env_t *get_identity_key(void);
crypto_pk_env_t *get_link_key(void);
int init_keys(void);
void router_retry_connections(void);
void router_upload_desc_to_dirservers(void);
int router_compare_to_my_exit_policy(connection_t *conn);
const char *router_get_my_descriptor(void);
int router_rebuild_descriptor(void);
int router_dump_router_to_string(char *s, int maxlen, routerinfo_t *router,
crypto_pk_env_t *ident_key);
/********************************* routerlist.c ***************************/
routerinfo_t *router_pick_directory_server(void);
routerinfo_t *router_pick_randomly_from_running(void);
void router_upload_desc_to_dirservers(void);
routerinfo_t *router_get_by_addr_port(uint32_t addr, uint16_t port);
routerinfo_t *router_get_by_link_pk(crypto_pk_env_t *pk);
routerinfo_t *router_get_by_nickname(char *nickname);
void router_get_directory(routerlist_t **pdirectory);
void router_get_routerlist(routerlist_t **prouterlist);
void routerinfo_free(routerinfo_t *router);
void router_mark_as_down(char *nickname);
int router_get_list_from_file(char *routerfile);
int router_get_router_hash(char *s, char *digest);
int router_set_routerlist_from_file(char *routerfile);
int router_get_dir_hash(char *s, char *digest);
/* Reads a list of known routers, unsigned. */
int router_get_list_from_string(char *s);
/* Exported for debugging */
int router_get_list_from_string_impl(char **s, routerlist_t **dest, int n_good_nicknames, const char *good_nickname_lst[]);
/* Reads a signed directory. */
int router_get_dir_from_string(char *s, crypto_pk_env_t *pkey);
/* Exported or debugging */
int router_get_dir_from_string_impl(char *s, routerlist_t **dest,
crypto_pk_env_t *pkey);
routerinfo_t *router_get_entry_from_string(char **s);
int router_get_router_hash(char *s, char *digest);
int router_set_routerlist_from_directory(char *s, crypto_pk_env_t *pkey);
routerinfo_t *router_get_entry_from_string(char**s);
int router_add_exit_policy_from_string(routerinfo_t *router, char *s);
int router_supports_exit_address(uint32_t addr, uint16_t port,
routerinfo_t *router);
int router_compare_to_my_exit_policy(connection_t *conn);
int router_compare_addr_to_exit_policy(uint32_t addr, uint16_t port,
struct exit_policy_t *policy);
void routerinfo_free(routerinfo_t *router);
int router_dump_router_to_string(char *s, int maxlen, routerinfo_t *router,
crypto_pk_env_t *ident_key);
int router_exit_policy_all_routers_reject(uint32_t addr, uint16_t port);
int router_exit_policy_rejects_all(routerinfo_t *router);
const char *router_get_my_descriptor(void);
int router_rebuild_descriptor(void);
int connection_ap_can_use_exit(connection_t *conn, routerinfo_t *exit);
/********************************* dirserv.c ***************************/
int dirserv_add_own_fingerprint(const char *nickname, crypto_pk_env_t *pk);
trunk/src/or/router.c
+517
View File
@@ -0,0 +1,517 @@
/* Copyright 2001,2002,2003 Roger Dingledine, Matej Pfajfar. */
/* See LICENSE for licensing information */
/* $Id$ */
#include "or.h"
extern or_options_t options; /* command-line and config-file options */
/************************************************************/
/* private keys */
static crypto_pk_env_t *onionkey=NULL;
static crypto_pk_env_t *linkkey=NULL;
static crypto_pk_env_t *identitykey=NULL;
void set_onion_key(crypto_pk_env_t *k) {
onionkey = k;
}
crypto_pk_env_t *get_onion_key(void) {
assert(onionkey);
return onionkey;
}
void set_link_key(crypto_pk_env_t *k)
{
linkkey = k;
}
crypto_pk_env_t *get_link_key(void)
{
assert(linkkey);
return linkkey;
}
void set_identity_key(crypto_pk_env_t *k) {
identitykey = k;
}
crypto_pk_env_t *get_identity_key(void) {
assert(identitykey);
return identitykey;
}
/************************************************************/
static crypto_pk_env_t *init_key_from_file(const char *fname)
{
crypto_pk_env_t *prkey = NULL;
int fd = -1;
FILE *file = NULL;
if (!(prkey = crypto_new_pk_env(CRYPTO_PK_RSA))) {
log(LOG_ERR, "Error creating crypto environment.");
goto error;
}
switch(file_status(fname)) {
case FN_DIR:
case FN_ERROR:
log(LOG_ERR, "Can't read key from %s", fname);
goto error;
case FN_NOENT:
log(LOG_INFO, "No key found in %s; generating fresh key.", fname);
if (crypto_pk_generate_key(prkey)) {
log(LOG_ERR, "Error generating key: %s", crypto_perror());
goto error;
}
if (crypto_pk_check_key(prkey) <= 0) {
log(LOG_ERR, "Generated key seems invalid");
goto error;
}
log(LOG_INFO, "Generated key seems valid");
if (crypto_pk_write_private_key_to_filename(prkey, fname)) {
log(LOG_ERR, "Couldn't write generated key to %s.", fname);
goto error;
}
return prkey;
case FN_FILE:
if (crypto_pk_read_private_key_from_filename(prkey, fname)) {
log(LOG_ERR, "Error loading private key.");
goto error;
}
return prkey;
default:
assert(0);
}
error:
if (prkey)
crypto_free_pk_env(prkey);
if (fd >= 0 && !file)
close(fd);
if (file)
fclose(file);
return NULL;
}
int init_keys(void) {
char keydir[512];
char fingerprint[FINGERPRINT_LEN+MAX_NICKNAME_LEN+3];
char *cp;
const char *tmp, *mydesc;
crypto_pk_env_t *prkey;
/* OP's don't need keys. Just initialize the TLS context.*/
if (!options.ORPort) {
assert(!options.DirPort);
if (tor_tls_context_new(NULL, 0, NULL)<0) {
log_fn(LOG_ERR, "Error creating TLS context for OP.");
return -1;
}
return 0;
}
assert(options.DataDirectory);
if (strlen(options.DataDirectory) > (512-128)) {
log_fn(LOG_ERR, "DataDirectory is too long.");
return -1;
}
if (check_private_dir(options.DataDirectory, 1)) {
return -1;
}
sprintf(keydir,"%s/keys",options.DataDirectory);
if (check_private_dir(keydir, 1)) {
return -1;
}
cp = keydir + strlen(keydir); /* End of string. */
/* 1. Read identity key. Make it if none is found. */
strcpy(cp, "/identity.key");
log_fn(LOG_INFO,"Reading/making identity key %s...",keydir);
prkey = init_key_from_file(keydir);
if (!prkey) return -1;
set_identity_key(prkey);
/* 2. Read onion key. Make it if none is found. */
strcpy(cp, "/onion.key");
log_fn(LOG_INFO,"Reading/making onion key %s...",keydir);
prkey = init_key_from_file(keydir);
if (!prkey) return -1;
set_onion_key(prkey);
/* 3. Initialize link key and TLS context. */
strcpy(cp, "/link.key");
log_fn(LOG_INFO,"Reading/making link key %s...",keydir);
prkey = init_key_from_file(keydir);
if (!prkey) return -1;
set_link_key(prkey);
if (tor_tls_context_new(prkey, 1, options.Nickname) < 0) {
log_fn(LOG_ERR, "Error initializing TLS context");
return -1;
}
/* 4. Dump router descriptor to 'router.desc' */
/* Must be called after keys are initialized. */
if (!(router_get_my_descriptor())) {
log_fn(LOG_ERR, "Error initializing descriptor.");
return -1;
}
/* We need to add our own fingerprint so it gets recognized. */
if (dirserv_add_own_fingerprint(options.Nickname, get_identity_key())) {
log_fn(LOG_ERR, "Error adding own fingerprint to approved set");
return -1;
}
tmp = mydesc = router_get_my_descriptor();
if (dirserv_add_descriptor(&tmp)) {
log(LOG_ERR, "Unable to add own descriptor to directory.");
return -1;
}
sprintf(keydir,"%s/router.desc", options.DataDirectory);
log_fn(LOG_INFO,"Dumping descriptor to %s...",keydir);
if (write_str_to_file(keydir, mydesc)) {
return -1;
}
/* 5. Dump fingerprint to 'fingerprint' */
sprintf(keydir,"%s/fingerprint", options.DataDirectory);
log_fn(LOG_INFO,"Dumping fingerprint to %s...",keydir);
assert(strlen(options.Nickname) <= MAX_NICKNAME_LEN);
strcpy(fingerprint, options.Nickname);
strcat(fingerprint, " ");
if (crypto_pk_get_fingerprint(get_identity_key(),
fingerprint+strlen(fingerprint))<0) {
log_fn(LOG_ERR, "Error computing fingerprint");
return -1;
}
strcat(fingerprint, "\n");
if (write_str_to_file(keydir, fingerprint))
return -1;
if(!options.DirPort)
return 0;
/* 6. [dirserver only] load approved-routers file */
sprintf(keydir,"%s/approved-routers", options.DataDirectory);
log_fn(LOG_INFO,"Loading approved fingerprints from %s...",keydir);
if(dirserv_parse_fingerprint_file(keydir) < 0) {
log_fn(LOG_ERR, "Error loading fingerprints");
return -1;
}
/* 7. [dirserver only] load old directory, if it's there */
sprintf(keydir,"%s/cached-directory", options.DataDirectory);
log_fn(LOG_INFO,"Loading cached directory from %s...",keydir);
cp = read_file_to_str(keydir);
if(!cp) {
log_fn(LOG_INFO,"Cached directory %s not present. Ok.",keydir);
} else {
if(dirserv_init_from_directory_string(cp) < 0) {
log_fn(LOG_ERR, "Cached directory %s is corrupt", keydir);
free(cp);
return -1;
}
free(cp);
}
/* success */
return 0;
}
/************************************************************/
static routerinfo_t *desc_routerinfo = NULL; /* my descriptor */
static char descriptor[8192]; /* string representation of my descriptor */
void router_retry_connections(void) {
int i;
routerinfo_t *router;
routerlist_t *rl;
router_get_routerlist(&rl);
for (i=0;i<rl->n_routers;i++) {
router = rl->routers[i];
if(!connection_exact_get_by_addr_port(router->addr,router->or_port)) {
/* not in the list */
log_fn(LOG_DEBUG,"connecting to OR %s:%u.",router->address,router->or_port);
connection_or_connect(router);
}
}
}
void router_upload_desc_to_dirservers(void) {
int i;
routerinfo_t *router;
routerlist_t *rl;
router_get_routerlist(&rl);
if(!rl)
return;
if (!router_get_my_descriptor()) {
log_fn(LOG_WARN, "No descriptor; skipping upload");
return;
}
for(i=0;i<rl->n_routers;i++) {
router = rl->routers[i];
if(router->dir_port > 0)
directory_initiate_command(router, DIR_CONN_STATE_CONNECTING_UPLOAD);
}
}
static void router_add_exit_policy_from_config(routerinfo_t *router) {
char *s = options.ExitPolicy, *e;
int last=0;
char line[1024];
if(!s) {
log_fn(LOG_INFO,"No exit policy configured. Ok.");
return; /* nothing to see here */
}
if(!*s) {
log_fn(LOG_INFO,"Exit policy is empty. Ok.");
return; /* nothing to see here */
}
for(;;) {
e = strchr(s,',');
if(!e) {
last = 1;
strncpy(line,s,1023);
} else {
memcpy(line,s, ((e-s)<1023)?(e-s):1023);
line[e-s] = 0;
}
line[1023]=0;
log_fn(LOG_DEBUG,"Adding new entry '%s'",line);
if(router_add_exit_policy_from_string(router,line) < 0)
log_fn(LOG_WARN,"Malformed exit policy %s; skipping.", line);
if(last)
return;
s = e+1;
}
}
/* Return 0 if my exit policy says to allow connection to conn.
* Else return -1.
*/
int router_compare_to_my_exit_policy(connection_t *conn) {
assert(desc_routerinfo);
assert(conn->addr); /* make sure it's resolved to something. this
way we can't get a 'maybe' below. */
if (router_compare_addr_to_exit_policy(conn->addr, conn->port,
desc_routerinfo->exit_policy) == 0)
return 0;
else
return -1;
}
const char *router_get_my_descriptor(void) {
if (!desc_routerinfo) {
if (router_rebuild_descriptor())
return NULL;
}
log_fn(LOG_DEBUG,"my desc is '%s'",descriptor);
return descriptor;
}
int router_rebuild_descriptor(void) {
routerinfo_t *ri;
char localhostname[256];
char *address = options.Address;
if(!address) { /* if not specified in config, we find a default */
if(gethostname(localhostname,sizeof(localhostname)) < 0) {
log_fn(LOG_WARN,"Error obtaining local hostname");
return -1;
}
address = localhostname;
if(!strchr(address,'.')) {
log_fn(LOG_WARN,"fqdn '%s' has only one element. Misconfigured machine?",address);
log_fn(LOG_WARN,"Try setting the Address line in your config file.");
return -1;
}
}
ri = tor_malloc(sizeof(routerinfo_t));
ri->address = tor_strdup(address);
ri->nickname = tor_strdup(options.Nickname);
/* No need to set addr. */
ri->or_port = options.ORPort;
ri->socks_port = options.SocksPort;
ri->dir_port = options.DirPort;
ri->published_on = time(NULL);
ri->onion_pkey = crypto_pk_dup_key(get_onion_key());
ri->link_pkey = crypto_pk_dup_key(get_link_key());
ri->identity_pkey = crypto_pk_dup_key(get_identity_key());
ri->bandwidth = options.TotalBandwidth;
ri->exit_policy = NULL; /* zero it out first */
router_add_exit_policy_from_config(ri);
if (desc_routerinfo)
routerinfo_free(desc_routerinfo);
desc_routerinfo = ri;
if (router_dump_router_to_string(descriptor, 8192, ri, get_identity_key())<0) {
log_fn(LOG_WARN, "Couldn't dump router to string.");
return -1;
}
return 0;
}
static void get_platform_str(char *platform, int len)
{
snprintf(platform, len-1, "Tor %s on %s", VERSION, get_uname());
platform[len-1] = '\0';
return;
}
/* XXX need to audit this thing and count fenceposts. maybe
* refactor so we don't have to keep asking if we're
* near the end of maxlen?
*/
#define DEBUG_ROUTER_DUMP_ROUTER_TO_STRING
int router_dump_router_to_string(char *s, int maxlen, routerinfo_t *router,
crypto_pk_env_t *ident_key) {
char *onion_pkey;
char *link_pkey;
char *identity_pkey;
struct in_addr in;
char platform[256];
char digest[20];
char signature[128];
char published[32];
int onion_pkeylen, link_pkeylen, identity_pkeylen;
int written;
int result=0;
struct exit_policy_t *tmpe;
#ifdef DEBUG_ROUTER_DUMP_ROUTER_TO_STRING
char *s_tmp, *s_dup;
routerinfo_t *ri_tmp;
#endif
get_platform_str(platform, sizeof(platform));
if (crypto_pk_cmp_keys(ident_key, router->identity_pkey)) {
log_fn(LOG_WARN,"Tried to sign a router with a private key that didn't match router's public key!");
return -1;
}
if(crypto_pk_write_public_key_to_string(router->onion_pkey,
&onion_pkey,&onion_pkeylen)<0) {
log_fn(LOG_WARN,"write onion_pkey to string failed!");
return -1;
}
if(crypto_pk_write_public_key_to_string(router->identity_pkey,
&identity_pkey,&identity_pkeylen)<0) {
log_fn(LOG_WARN,"write identity_pkey to string failed!");
return -1;
}
if(crypto_pk_write_public_key_to_string(router->link_pkey,
&link_pkey,&link_pkeylen)<0) {
log_fn(LOG_WARN,"write link_pkey to string failed!");
return -1;
}
strftime(published, 32, "%Y-%m-%d %H:%M:%S", gmtime(&router->published_on));
result = snprintf(s, maxlen,
"router %s %s %d %d %d %d\n"
"platform %s\n"
"published %s\n"
"onion-key\n%s"
"link-key\n%s"
"signing-key\n%s",
router->nickname,
router->address,
router->or_port,
router->socks_port,
router->dir_port,
router->bandwidth,
platform,
published,
onion_pkey, link_pkey, identity_pkey);
free(onion_pkey);
free(link_pkey);
free(identity_pkey);
if(result < 0 || result >= maxlen) {
/* apparently different glibcs do different things on snprintf error.. so check both */
return -1;
}
written = result;
for(tmpe=router->exit_policy; tmpe; tmpe=tmpe->next) {
in.s_addr = htonl(tmpe->addr);
result = snprintf(s+written, maxlen-written, "%s %s",
tmpe->policy_type == EXIT_POLICY_ACCEPT ? "accept" : "reject",
tmpe->msk == 0 ? "*" : inet_ntoa(in));
if(result < 0 || result+written > maxlen) {
/* apparently different glibcs do different things on snprintf error.. so check both */
return -1;
}
written += result;
if (tmpe->msk != 0xFFFFFFFFu && tmpe->msk != 0) {
in.s_addr = htonl(tmpe->msk);
result = snprintf(s+written, maxlen-written, "/%s", inet_ntoa(in));
if (result<0 || result+written > maxlen)
return -1;
written += result;
}
if (tmpe->prt) {
result = snprintf(s+written, maxlen-written, ":%d\n", tmpe->prt);
if (result<0 || result+written > maxlen)
return -1;
written += result;
} else {
if (written > maxlen-4)
return -1;
strcat(s+written, ":*\n");
written += 3;
}
} /* end for */
if (written > maxlen-256) /* Not enough room for signature. */
return -1;
strcat(s+written, "router-signature\n");
written += strlen(s+written);
s[written] = '\0';
if (router_get_router_hash(s, digest) < 0)
return -1;
if (crypto_pk_private_sign(ident_key, digest, 20, signature) < 0) {
log_fn(LOG_WARN, "Error signing digest");
return -1;
}
strcat(s+written, "-----BEGIN SIGNATURE-----\n");
written += strlen(s+written);
if (base64_encode(s+written, maxlen-written, signature, 128) < 0) {
log_fn(LOG_WARN, "Couldn't base64-encode signature");
return -1;
}
written += strlen(s+written);
strcat(s+written, "-----END SIGNATURE-----\n");
written += strlen(s+written);
if (written > maxlen-2)
return -1;
/* include a last '\n' */
s[written] = '\n';
s[written+1] = 0;
#ifdef DEBUG_ROUTER_DUMP_ROUTER_TO_STRING
s_tmp = s_dup = tor_strdup(s);
ri_tmp = router_get_entry_from_string(&s_tmp);
if (!ri_tmp) {
log_fn(LOG_ERR, "We just generated a router descriptor we can't parse: <<%s>>",
s);
return -1;
}
free(s_dup);
routerinfo_free(ri_tmp);
#endif
return written+1;
}
/*
Local Variables:
mode:c
indent-tabs-mode:nil
c-basic-offset:2
End:
*/
trunk/src/or/routers.c → trunk/src/or/routerlist.c
+11 -301
View File
@@ -17,9 +17,6 @@
/****************************************************************************/
static routerlist_t *routerlist = NULL; /* router array */
static routerinfo_t *desc_routerinfo = NULL; /* my descriptor */
static char descriptor[8192]; /* string representation of my descriptor */
extern or_options_t options; /* command-line and config-file options */
/****************************************************************************/
@@ -35,20 +32,6 @@ static int router_resolve_routerlist(routerlist_t *dir);
/****************************************************************************/
void router_retry_connections(void) {
int i;
routerinfo_t *router;
for (i=0;i<routerlist->n_routers;i++) {
router = routerlist->routers[i];
if(!connection_exact_get_by_addr_port(router->addr,router->or_port)) {
/* not in the list */
log_fn(LOG_DEBUG,"connecting to OR %s:%u.",router->address,router->or_port);
connection_or_connect(router);
}
}
}
routerinfo_t *router_pick_directory_server(void) {
/* pick a random running router with a positive dir_port */
int i,j;
@@ -125,25 +108,6 @@ routerinfo_t *router_pick_randomly_from_running(void) {
return NULL;
}
void router_upload_desc_to_dirservers(void) {
int i;
routerinfo_t *router;
if(!routerlist)
return;
if (!router_get_my_descriptor()) {
log_fn(LOG_WARN, "No descriptor; skipping upload");
return;
}
for(i=0;i<routerlist->n_routers;i++) {
router = routerlist->routers[i];
if(router->dir_port > 0)
directory_initiate_command(router, DIR_CONN_STATE_CONNECTING_UPLOAD);
}
}
routerinfo_t *router_get_by_addr_port(uint32_t addr, uint16_t port) {
int i;
routerinfo_t *router;
@@ -218,7 +182,7 @@ void routerinfo_free(routerinfo_t *router)
free(router);
}
void routerlist_free(routerlist_t *rl)
static void routerlist_free(routerlist_t *rl)
{
int i;
for (i = 0; i < rl->n_routers; ++i)
@@ -473,7 +437,7 @@ router_get_next_token(char **s, directory_token_t *tok) {
/* read routerinfo elements from s, and throw out the ones that
* don't parse and resolve. */
int router_set_routerlist_from_string(char *s)
static int router_set_routerlist_from_string(char *s)
{
if (router_get_list_from_string_impl(&s, &routerlist, -1, NULL)) {
log(LOG_WARN, "Error parsing router file");
@@ -572,8 +536,9 @@ int router_set_routerlist_from_directory(char *s, crypto_pk_env_t *pkey)
return 0;
}
int router_get_routerlist_from_directory_impl(char *s, routerlist_t **dest,
crypto_pk_env_t *pkey)
static int
router_get_routerlist_from_directory_impl(char *s, routerlist_t **dest,
crypto_pk_env_t *pkey)
{
directory_token_t tok;
char digest[20];
@@ -682,9 +647,10 @@ int router_get_routerlist_from_directory_impl(char *s, routerlist_t **dest,
#undef TOK_IS
}
int router_get_list_from_string_impl(char **s, routerlist_t **dest,
int n_good_nicknames,
const char **good_nickname_lst)
static int
router_get_list_from_string_impl(char **s, routerlist_t **dest,
int n_good_nicknames,
const char **good_nickname_lst)
{
routerinfo_t *router;
routerinfo_t **rarray;
@@ -947,42 +913,8 @@ routerinfo_t *router_get_entry_from_string(char**s) {
#undef NEXT_TOKEN
}
void router_add_exit_policy_from_config(routerinfo_t *router) {
char *s = options.ExitPolicy, *e;
int last=0;
char line[1024];
if(!s) {
log_fn(LOG_INFO,"No exit policy configured. Ok.");
return; /* nothing to see here */
}
if(!*s) {
log_fn(LOG_INFO,"Exit policy is empty. Ok.");
return; /* nothing to see here */
}
for(;;) {
e = strchr(s,',');
if(!e) {
last = 1;
strncpy(line,s,1023);
} else {
memcpy(line,s, ((e-s)<1023)?(e-s):1023);
line[e-s] = 0;
}
line[1023]=0;
log_fn(LOG_DEBUG,"Adding new entry '%s'",line);
if(router_add_exit_policy_from_string(router,line) < 0)
log_fn(LOG_WARN,"Malformed exit policy %s; skipping.", line);
if(last)
return;
s = e+1;
}
}
static int
router_add_exit_policy_from_string(routerinfo_t *router,
char *s)
int
router_add_exit_policy_from_string(routerinfo_t *router, char *s)
{
directory_token_t tok;
char *tmp, *cp;
@@ -1172,21 +1104,6 @@ int router_compare_addr_to_exit_policy(uint32_t addr, uint16_t port,
return 0; /* accept all by default. */
}
/* Return 0 if my exit policy says to allow connection to conn.
* Else return -1.
*/
int router_compare_to_my_exit_policy(connection_t *conn) {
assert(desc_routerinfo);
assert(conn->addr); /* make sure it's resolved to something. this
way we can't get a 'maybe' below. */
if (router_compare_addr_to_exit_policy(conn->addr, conn->port,
desc_routerinfo->exit_policy) == 0)
return 0;
else
return -1;
}
/* return 1 if all running routers will reject addr:port, return 0 if
any might accept it. */
int router_exit_policy_all_routers_reject(uint32_t addr, uint16_t port) {
@@ -1209,213 +1126,6 @@ int router_exit_policy_rejects_all(routerinfo_t *router) {
return 0; /* no, might accept some */
}
const char *router_get_my_descriptor(void) {
if (!desc_routerinfo) {
if (router_rebuild_descriptor())
return NULL;
}
log_fn(LOG_DEBUG,"my desc is '%s'",descriptor);
return descriptor;
}
int router_rebuild_descriptor(void) {
routerinfo_t *ri;
char localhostname[256];
char *address = options.Address;
if(!address) { /* if not specified in config, we find a default */
if(gethostname(localhostname,sizeof(localhostname)) < 0) {
log_fn(LOG_WARN,"Error obtaining local hostname");
return -1;
}
address = localhostname;
if(!strchr(address,'.')) {
log_fn(LOG_WARN,"fqdn '%s' has only one element. Misconfigured machine?",address);
log_fn(LOG_WARN,"Try setting the Address line in your config file.");
return -1;
}
}
ri = tor_malloc(sizeof(routerinfo_t));
ri->address = tor_strdup(address);
ri->nickname = tor_strdup(options.Nickname);
/* No need to set addr. */
ri->or_port = options.ORPort;
ri->socks_port = options.SocksPort;
ri->dir_port = options.DirPort;
ri->published_on = time(NULL);
ri->onion_pkey = crypto_pk_dup_key(get_onion_key());
ri->link_pkey = crypto_pk_dup_key(get_link_key());
ri->identity_pkey = crypto_pk_dup_key(get_identity_key());
ri->bandwidth = options.TotalBandwidth;
ri->exit_policy = NULL; /* zero it out first */
router_add_exit_policy_from_config(ri);
if (desc_routerinfo)
routerinfo_free(desc_routerinfo);
desc_routerinfo = ri;
if (router_dump_router_to_string(descriptor, 8192, ri, get_identity_key())<0) {
log_fn(LOG_WARN, "Couldn't dump router to string.");
return -1;
}
return 0;
}
static void get_platform_str(char *platform, int len)
{
snprintf(platform, len-1, "Tor %s on %s", VERSION, get_uname());
platform[len-1] = '\0';
return;
}
/* XXX need to audit this thing and count fenceposts. maybe
* refactor so we don't have to keep asking if we're
* near the end of maxlen?
*/
#define DEBUG_ROUTER_DUMP_ROUTER_TO_STRING
int router_dump_router_to_string(char *s, int maxlen, routerinfo_t *router,
crypto_pk_env_t *ident_key) {
char *onion_pkey;
char *link_pkey;
char *identity_pkey;
struct in_addr in;
char platform[256];
char digest[20];
char signature[128];
char published[32];
int onion_pkeylen, link_pkeylen, identity_pkeylen;
int written;
int result=0;
struct exit_policy_t *tmpe;
#ifdef DEBUG_ROUTER_DUMP_ROUTER_TO_STRING
char *s_tmp, *s_dup;
routerinfo_t *ri_tmp;
#endif
get_platform_str(platform, sizeof(platform));
if (crypto_pk_cmp_keys(ident_key, router->identity_pkey)) {
log_fn(LOG_WARN,"Tried to sign a router with a private key that didn't match router's public key!");
return -1;
}
if(crypto_pk_write_public_key_to_string(router->onion_pkey,
&onion_pkey,&onion_pkeylen)<0) {
log_fn(LOG_WARN,"write onion_pkey to string failed!");
return -1;
}
if(crypto_pk_write_public_key_to_string(router->identity_pkey,
&identity_pkey,&identity_pkeylen)<0) {
log_fn(LOG_WARN,"write identity_pkey to string failed!");
return -1;
}
if(crypto_pk_write_public_key_to_string(router->link_pkey,
&link_pkey,&link_pkeylen)<0) {
log_fn(LOG_WARN,"write link_pkey to string failed!");
return -1;
}
strftime(published, 32, "%Y-%m-%d %H:%M:%S", gmtime(&router->published_on));
result = snprintf(s, maxlen,
"router %s %s %d %d %d %d\n"
"platform %s\n"
"published %s\n"
"onion-key\n%s"
"link-key\n%s"
"signing-key\n%s",
router->nickname,
router->address,
router->or_port,
router->socks_port,
router->dir_port,
router->bandwidth,
platform,
published,
onion_pkey, link_pkey, identity_pkey);
free(onion_pkey);
free(link_pkey);
free(identity_pkey);
if(result < 0 || result >= maxlen) {
/* apparently different glibcs do different things on snprintf error.. so check both */
return -1;
}
written = result;
for(tmpe=router->exit_policy; tmpe; tmpe=tmpe->next) {
in.s_addr = htonl(tmpe->addr);
result = snprintf(s+written, maxlen-written, "%s %s",
tmpe->policy_type == EXIT_POLICY_ACCEPT ? "accept" : "reject",
tmpe->msk == 0 ? "*" : inet_ntoa(in));
if(result < 0 || result+written > maxlen) {
/* apparently different glibcs do different things on snprintf error.. so check both */
return -1;
}
written += result;
if (tmpe->msk != 0xFFFFFFFFu && tmpe->msk != 0) {
in.s_addr = htonl(tmpe->msk);
result = snprintf(s+written, maxlen-written, "/%s", inet_ntoa(in));
if (result<0 || result+written > maxlen)
return -1;
written += result;
}
if (tmpe->prt) {
result = snprintf(s+written, maxlen-written, ":%d\n", tmpe->prt);
if (result<0 || result+written > maxlen)
return -1;
written += result;
} else {
if (written > maxlen-4)
return -1;
strcat(s+written, ":*\n");
written += 3;
}
} /* end for */
if (written > maxlen-256) /* Not enough room for signature. */
return -1;
strcat(s+written, "router-signature\n");
written += strlen(s+written);
s[written] = '\0';
if (router_get_router_hash(s, digest) < 0)
return -1;
if (crypto_pk_private_sign(ident_key, digest, 20, signature) < 0) {
log_fn(LOG_WARN, "Error signing digest");
return -1;
}
strcat(s+written, "-----BEGIN SIGNATURE-----\n");
written += strlen(s+written);
if (base64_encode(s+written, maxlen-written, signature, 128) < 0) {
log_fn(LOG_WARN, "Couldn't base64-encode signature");
return -1;
}
written += strlen(s+written);
strcat(s+written, "-----END SIGNATURE-----\n");
written += strlen(s+written);
if (written > maxlen-2)
return -1;
/* include a last '\n' */
s[written] = '\n';
s[written+1] = 0;
#ifdef DEBUG_ROUTER_DUMP_ROUTER_TO_STRING
s_tmp = s_dup = tor_strdup(s);
ri_tmp = router_get_entry_from_string(&s_tmp);
if (!ri_tmp) {
log_fn(LOG_ERR, "We just generated a router descriptor we can't parse: <<%s>>",
s);
return -1;
}
free(s_dup);
routerinfo_free(ri_tmp);
#endif
return written+1;
}
/*
Local Variables:
mode:c