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Implement new version handling code.

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svn:r5100
This commit is contained in:
Nick Mathewson 2005-09-21 00:41:06 +00:00
parent 892e173e01
commit 20b9111266
6 changed files with 177 additions and 120 deletions
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2
src/or/config.c
View File

@ -191,6 +191,8 @@ static config_var_t _option_vars[] = {
VAR("UseHelperNodes", BOOL, UseHelperNodes, "0"),
VAR("User", STRING, User, NULL),
VAR("V1AuthoritativeDirectory",BOOL, V1AuthoritativeDir, "0"),
/* XXXX 011 change this default on 0.1.1.x */
VAR("VersioningAuthoritativeDirectory",BOOL,VersioningAuthoritativeDir, "1"),
VAR("__LeaveStreamsUnattached", BOOL,LeaveStreamsUnattached, "0"),
{ NULL, CONFIG_TYPE_OBSOLETE, 0, NULL, NULL }
};

4
src/or/dirserv.c
View File

@ -1149,6 +1149,7 @@ generate_v2_networkstatus(void)
smartlist_t *descriptor_list = get_descriptor_list();
time_t now = time(NULL);
int naming = options->NamingAuthoritativeDir;
int versioning = options->VersioningAuthoritativeDir;
const char *contact;
if (!descriptor_list) {
@ -1193,7 +1194,7 @@ generate_v2_networkstatus(void)
"fingerprint %s\n"
"contact %s\n"
"published %s\n"
"dir-options%s\n"
"dir-options%s%s\n"
"client-versions %s\n"
"server-versions %s\n"
"dir-signing-key\n%s\n",
@ -1202,6 +1203,7 @@ generate_v2_networkstatus(void)
contact,
published,
naming ? " Names" : "",
versioning ? " Versions" : "",
client_versions,
server_versions,
identity_pkey);

22
src/or/or.h
View File

@ -816,7 +816,8 @@ typedef struct networkstatus_t {
/** What was the digest of the document? */
char networkstatus_digest[DIGEST_LEN];
int is_recent; /** Is this recent enough to influence running status? */
unsigned int is_recent; /**< Is this recent enough to influence running
* status? */
/* These fields come from the actual network-status document.*/
time_t published_on; /**< Declared publication date. */
@ -833,7 +834,10 @@ typedef struct networkstatus_t {
char *server_versions; /**< comma-separated list of recommended server
* versions. */
int binds_names:1; /**< True iff this directory server binds names. */
unsigned int binds_names:1; /**< True iff this directory server binds names. */
unsigned int recommends_versions:1; /**< True iff this directory server
* recommends client and server software
* versions. */
smartlist_t *entries; /**< List of router_status_t*. This list is kept
* sorted by identity_digest. */
@ -1175,6 +1179,8 @@ typedef struct {
* for version 1 directories? */
int NamingAuthoritativeDir; /**< Boolean: is this an authoritative directory
* that's willing to bind names? */
int VersioningAuthoritativeDir; /**< Boolean: is this an authoritative directory
* that's willing to recommend versions? */
int ClientOnly; /**< Boolean: should we never evolve into a server role? */
int NoPublish; /**< Boolean: should we never publish a descriptor? */
int ConnLimit; /**< Requested maximum number of simultaneous connections. */
@ -2143,6 +2149,15 @@ typedef struct tor_version_t {
char status_tag[MAX_STATUS_TAG_LEN];
} tor_version_t;
typedef enum version_status_t {
VS_RECOMMENDED=0, /**< This version is listed as recommended. */
VS_OLD=1, /**< This version is older than any recommended version. */
VS_NEW=2, /**< This version is newer than any recommended version. */
VS_NEW_IN_SERIES=3, /**< This version is newer than any recommended version
* in its series, and such recommended versions exist. */
VS_UNRECOMMENDED=4 /**< This version is not recommended (general case) */
} version_status_t;
int router_get_router_hash(const char *s, char *digest);
int router_get_dir_hash(const char *s, char *digest);
int router_get_runningrouters_hash(const char *s, char *digest);
@ -2162,6 +2177,9 @@ routerinfo_t *router_parse_entry_from_string(const char *s, const char *end);
int router_add_exit_policy_from_string(routerinfo_t *router, const char *s);
addr_policy_t *router_parse_addr_policy_from_string(const char *s,
int assume_action);
version_status_t tor_version_is_obsolete(const char *myversion,
const char *versionlist);
version_status_t version_status_join(version_status_t a, version_status_t b);
int tor_version_parse(const char *s, tor_version_t *out);
int tor_version_as_new_as(const char *platform, const char *cutoff);
int tor_version_compare(tor_version_t *a, tor_version_t *b);

83
src/or/routerlist.c
View File

@ -1983,7 +1983,10 @@ networkstatus_get_by_digest(const char *digest)
void
routers_update_all_from_networkstatus(void)
{
#define SELF_OPINION_INTERVAL 90*60
static int have_warned_about_unverified_status = 0;
static int have_warned_about_old_version = 0;
static int have_warned_about_new_version = 0;
routerinfo_t *me;
time_t now;
if (!routerlist || !networkstatus_list ||
@ -1997,18 +2000,33 @@ routers_update_all_from_networkstatus(void)
routers_update_status_from_networkstatus(routerlist->routers, 0);
me = router_get_my_routerinfo();
if (me) {
/* We could be more sophisticated about this whole business. How many
* dirservers list us as named, valid, etc. */
smartlist_t *lst = smartlist_create();
smartlist_add(lst, me);
routers_update_status_from_networkstatus(lst, 1);
if (me->is_verified == 0) {
log_fn(LOG_WARN, "Many directory servers list us as unverified. Please consider sending your identity fingerprint to the tor-ops.");
have_warned_about_unverified_status = 1;
} else if (me->is_named == 0) {
log_fn(LOG_WARN, "Many directory servers list us as unnamed. Please consider sending your identity fingerprint to the tor-ops.");
have_warned_about_unverified_status = 1;
if (me && !have_warned_about_unverified_status) {
int n_recent = 0, n_listing = 0, n_valid = 0, n_named = 0;
routerstatus_t *rs;
SMARTLIST_FOREACH(networkstatus_list, networkstatus_t *, ns,
{
if (ns->received_on + SELF_OPINION_INTERVAL < now)
continue;
++n_recent;
if (!(rs = networkstatus_find_entry(ns, me->identity_digest)))
continue;
++n_listing;
if (rs->is_valid)
++n_valid;
if (rs->is_named)
++n_named;
});
if (n_recent >= 2 && n_listing >= 2) {
if (n_valid <= n_recent/2) {
log_fn(LOG_WARN, "%d/%d recent directory servers list us as invalid. Please consider sending your identity fingerprint to the tor-ops.",
n_recent-n_valid, n_recent);
have_warned_about_unverified_status = 1;
} else if (n_named <= n_recent/2) {
log_fn(LOG_WARN, "%d/%d recent directory servers list us as unnamed. Please consider sending your identity fingerprint to the tor-ops.",
n_recent-n_valid, n_recent);
have_warned_about_unverified_status = 1;
}
}
}
@ -2016,6 +2034,47 @@ routers_update_all_from_networkstatus(void)
update_router_descriptor_downloads(time(NULL));
if (!have_warned_about_old_version) {
int n_recent = 0;
int n_recommended = 0;
int is_server = server_mode(get_options());
version_status_t consensus = VS_RECOMMENDED;
SMARTLIST_FOREACH(networkstatus_list, networkstatus_t *, ns,
{
version_status_t vs;
if (ns->received_on + SELF_OPINION_INTERVAL < now )
// XXXX NM enable this! || !ns->recommends_versions)
continue;
vs = tor_version_is_obsolete(
VERSION, is_server ? ns->server_versions : ns->client_versions);
if (vs == VS_RECOMMENDED)
++n_recommended;
if (n_recent++ == 0) {
consensus = vs;
} else if (consensus != vs) {
consensus = version_status_join(consensus, vs);
}
});
if (n_recent > 2 && n_recommended < n_recent/2) {
if (consensus == VS_NEW || consensus == VS_NEW_IN_SERIES) {
if (!have_warned_about_new_version) {
log_fn(LOG_NOTICE, "This version of Tor (%s) is newer than any recommended version%s, according to %d/%d recent network statuses.",
VERSION, consensus == VS_NEW_IN_SERIES ? " in its series" : "",
n_recent-n_recommended, n_recent);
have_warned_about_new_version = 1;
}
} else {
log_fn(LOG_NOTICE, "This version of Tor (%s) is %s, according to %d/%d recent network statuses.",
VERSION, consensus == VS_OLD ? "obsolete" : "not recommended",
n_recent-n_recommended, n_recent);
have_warned_about_old_version = 1;
}
} else {
log_fn(LOG_NOTICE, "%d/%d recent directories think my version is ok.",
n_recommended, n_recent);
}
}
routerstatus_list_has_changed = 0;
}

144
src/or/routerparse.c
View File

@ -166,8 +166,6 @@ static int check_directory_signature(const char *digest,
crypto_pk_env_t *declared_key,
int check_authority);
static crypto_pk_env_t *find_dir_signing_key(const char *str);
/* static */ int is_obsolete_version(const char *myversion,
const char *versionlist);
static int tor_version_same_series(tor_version_t *a, tor_version_t *b);
/** Set <b>digest</b> to the SHA-1 digest of the hash of the directory in
@ -258,14 +256,17 @@ router_append_dirobj_signature(char *buf, size_t buf_len, const char *digest,
* Otherwise return 0.
* (versionlist is a comma-separated list of version strings,
* optionally prefixed with "Tor". Versions that can't be parsed are
* ignored.) */
/* static */ int
is_obsolete_version(const char *myversion, const char *versionlist) {
* ignored.)
*
* DOCDOC interface changed */
version_status_t
tor_version_is_obsolete(const char *myversion, const char *versionlist)
{
const char *vl;
tor_version_t mine, other;
int found_newer = 0, found_newer_in_series = 0, found_any_in_series = 0,
r, ret, same;
static int warned_too_new=0;
int found_newer = 0, found_older = 0, found_newer_in_series = 0,
found_any_in_series = 0, r, same;
version_status_t ret = VS_UNRECOMMENDED;
smartlist_t *version_sl;
vl = versionlist;
@ -292,54 +293,28 @@ is_obsolete_version(const char *myversion, const char *versionlist) {
found_any_in_series = 1;
r = tor_version_compare(&mine, &other);
if (r==0) {
ret = 0;
ret = VS_RECOMMENDED;
goto done;
} else if (r<0) {
found_newer = 1;
if (same)
found_newer_in_series = 1;
} else if (r>0) {
found_older = 1;
}
}
});
/* We didn't find the listed version. Is it new or old? */
if (found_any_in_series) {
if (!found_newer_in_series) {
/* We belong to a series with recommended members, and we are newer than
* any recommended member. We're probably okay. */
if (!warned_too_new) {
log(LOG_WARN, "This version of Tor (%s) is newer than any in the same series on the recommended list (%s).",
myversion, versionlist);
warned_too_new = 1;
}
ret = 0;
} else {
/* We found a newer one in the same series; we're obsolete. */
ret = 1;
}
if (found_any_in_series && !found_newer_in_series) {
ret = VS_NEW_IN_SERIES;
} else if (found_newer && !found_older) {
ret = VS_OLD;
} else if (found_older && !found_newer) {
ret = VS_NEW;
} else {
if (found_newer) {
/* We belong to a series with no recommended members, and
* a newer series is recommended. We're obsolete. */
ret = 1;
} else {
/* We belong to a series with no recommended members, and it's
* newer than any recommended series. We're probably okay. */
if (!warned_too_new) {
log(LOG_WARN, "This version of Tor (%s) is newer than any on the recommended list (%s).",
myversion, versionlist);
warned_too_new = 1;
}
ret = 0;
}
ret = VS_UNRECOMMENDED;
}
/*
log_fn(LOG_DEBUG,
"Decided that %s is %sobsolete relative to %s: %d, %d, %d\n",
myversion, ret?"":"not ", versionlist, found_newer,
found_any_in_series, found_newer_in_series);
*/
done:
SMARTLIST_FOREACH(version_sl, char *, version, tor_free(version));
@ -347,29 +322,25 @@ is_obsolete_version(const char *myversion, const char *versionlist) {
return ret;
}
#if 0
/* Return 0 if myversion is supported; else warn and return -1. */
int
check_software_version_against_directory(const char *directory)
/** DOCDOC */
version_status_t
version_status_join(version_status_t a, version_status_t b)
{
char *v;
v = get_recommended_software_from_directory(directory);
if (!v) {
log_fn(LOG_WARN, "No recommended-versions string found in directory");
return -1;
}
if (!is_obsolete_version(VERSION, v)) {
tor_free(v);
return 0;
}
log(LOG_WARN,
"You are running Tor version %s, which will not work with this network.\n"
"Please use %s%s.",
VERSION, strchr(v,',') ? "one of " : "", v);
tor_free(v);
return -1;
if (a == b)
return a;
else if (a == VS_UNRECOMMENDED || b == VS_UNRECOMMENDED)
return VS_UNRECOMMENDED;
else if (a == VS_RECOMMENDED)
return b;
else if (b == VS_RECOMMENDED)
return a;
/* Okay. Neither is 'recommended' or 'unrecommended', and they differ. */
else if (a == VS_OLD || b == VS_OLD)
return VS_UNRECOMMENDED;
/* One is VS_NEW, the other is VS_NEW_IN_SERIES */
else
return VS_NEW_IN_SERIES;
}
#endif
/** Read a signed directory from <b>str</b>. If it's well-formed, return 0.
* Otherwise, return -1. If we're a directory cache, cache it.
@ -1164,25 +1135,31 @@ networkstatus_parse_from_string(const char *s)
goto err;
}
if (!(tok = find_first_by_keyword(tokens, K_CLIENT_VERSIONS)) || tok->n_args<1) {
log_fn(LOG_WARN, "Missing client-versions");
goto err;
if ((tok = find_first_by_keyword(tokens, K_DIR_OPTIONS))) {
for (i=0; i < tok->n_args; ++i) {
if (!strcmp(tok->args[i], "Names"))
ns->binds_names = 1;
if (!strcmp(tok->args[i], "Versions"))
ns->recommends_versions = 1;
}
}
ns->client_versions = tok->args[0];
if (!(tok = find_first_by_keyword(tokens, K_CLIENT_VERSIONS)) || tok->n_args<1) {
log_fn(LOG_WARN, "Missing client-versions");
goto err;
}
ns->client_versions = tok->args[0];
tok->args[0] = NULL;
if (ns->recommends_versions || 1) { //XXXX NM re-enable conditional.
if (!(tok = find_first_by_keyword(tokens, K_CLIENT_VERSIONS)) ||
tok->n_args<1) {
log_fn(LOG_WARN, "Missing client-versions");
}
ns->client_versions = tok->args[0];
tok->args[0] = NULL;
if (!(tok = find_first_by_keyword(tokens, K_SERVER_VERSIONS)) || tok->n_args<1) {
log_fn(LOG_WARN, "Missing server-versions");
goto err;
if (!(tok = find_first_by_keyword(tokens, K_SERVER_VERSIONS)) ||
tok->n_args<1) {
log_fn(LOG_WARN, "Missing server-versions on versioning directory");
goto err;
}
ns->server_versions = tok->args[0];
tok->args[0] = NULL;
}
ns->server_versions = tok->args[0];
tok->args[0] = NULL;
if (!(tok = find_first_by_keyword(tokens, K_PUBLISHED))) {
log_fn(LOG_WARN, "Missing published time on directory.");
@ -1193,13 +1170,6 @@ networkstatus_parse_from_string(const char *s)
goto err;
}
if ((tok = find_first_by_keyword(tokens, K_DIR_OPTIONS))) {
for (i=0; i < tok->n_args; ++i) {
if (!strcmp(tok->args[i], "Names"))
ns->binds_names = 1;
}
}
ns->entries = smartlist_create();
s = eos;
SMARTLIST_FOREACH(tokens, directory_token_t *, t, token_free(t));

42
src/or/test.c
View File

@ -32,7 +32,6 @@ int have_failed = 0;
void add_fingerprint_to_dir(const char *nickname, const char *fp,
smartlist_t *list);
void get_platform_str(char *platform, size_t len);
int is_obsolete_version(const char *myversion, const char *start);
size_t read_escaped_data(const char *data, size_t len, int translate_newlines,
char **out);
or_options_t *options_new(void);
@ -1368,28 +1367,35 @@ test_dir_format(void)
test_eq(IS_NOT_CVS, ver1.cvs);
test_streq("", ver1.status_tag);
/* make sure is_obsolete_version() works */
test_eq(1, is_obsolete_version("0.0.1", "Tor 0.0.2"));
test_eq(1, is_obsolete_version("0.0.1", "0.0.2, Tor 0.0.3"));
test_eq(1, is_obsolete_version("0.0.1", "0.0.2,Tor 0.0.3"));
test_eq(1, is_obsolete_version("0.0.1", "0.0.3,BetterTor 0.0.1"));
test_eq(0, is_obsolete_version("0.0.2", "Tor 0.0.2,Tor 0.0.3"));
test_eq(0, is_obsolete_version("0.0.2", "Tor 0.0.2pre1,Tor 0.0.3"));
test_eq(1, is_obsolete_version("0.0.2", "Tor 0.0.2.1,Tor 0.0.3"));
test_eq(0, is_obsolete_version("0.1.0", "Tor 0.0.2,Tor 0.0.3"));
test_eq(0, is_obsolete_version("0.0.7rc2", "0.0.7,Tor 0.0.7rc2,Tor 0.0.8"));
test_eq(0, is_obsolete_version("0.0.5", "0.0.5-cvs"));
test_eq(0, is_obsolete_version("0.0.5.1-cvs", "0.0.5"));
/* make sure tor_version_is_obsolete() works */
test_eq(VS_OLD, tor_version_is_obsolete("0.0.1", "Tor 0.0.2"));
test_eq(VS_OLD, tor_version_is_obsolete("0.0.1", "0.0.2, Tor 0.0.3"));
test_eq(VS_OLD, tor_version_is_obsolete("0.0.1", "0.0.2,Tor 0.0.3"));
test_eq(VS_OLD, tor_version_is_obsolete("0.0.1", "0.0.3,BetterTor 0.0.1"));
test_eq(VS_RECOMMENDED,tor_version_is_obsolete("0.0.2", "Tor 0.0.2,Tor 0.0.3"));
test_eq(VS_NEW_IN_SERIES,
tor_version_is_obsolete("0.0.2", "Tor 0.0.2pre1,Tor 0.0.3"));
test_eq(VS_OLD, tor_version_is_obsolete("0.0.2", "Tor 0.0.2.1,Tor 0.0.3"));
test_eq(VS_NEW, tor_version_is_obsolete("0.1.0", "Tor 0.0.2,Tor 0.0.3"));
test_eq(VS_RECOMMENDED,
tor_version_is_obsolete("0.0.7rc2", "0.0.7,Tor 0.0.7rc2,Tor 0.0.8"));
test_eq(VS_OLD, tor_version_is_obsolete("0.0.5.0", "0.0.5.1-cvs"));
test_eq(VS_NEW_IN_SERIES, tor_version_is_obsolete("0.0.5.1-cvs", "0.0.5"));
/* Not on list, but newer than any in same series. */
test_eq(0, is_obsolete_version("0.1.0.3", "Tor 0.1.0.2,Tor 0.0.9.5,Tor 0.1.1.0"));
test_eq(VS_NEW_IN_SERIES,
tor_version_is_obsolete("0.1.0.3", "Tor 0.1.0.2,Tor 0.0.9.5,Tor 0.1.1.0"));
/* Series newer than any on list. */
test_eq(0, is_obsolete_version("0.1.1.3", "Tor 0.1.0.2,Tor 0.0.9.5,Tor 0.1.1.0"));
test_eq(VS_NEW,
tor_version_is_obsolete("0.1.2.3", "Tor 0.1.0.2,Tor 0.0.9.5,Tor 0.1.1.0"));
/* Series older than any on list. */
test_eq(1, is_obsolete_version("0.0.1.3", "Tor 0.1.0.2,Tor 0.0.9.5,Tor 0.1.1.0"));
test_eq(VS_OLD,
tor_version_is_obsolete("0.0.1.3", "Tor 0.1.0.2,Tor 0.0.9.5,Tor 0.1.1.0"));
/* Not on list, not newer than any on same series. */
test_eq(1, is_obsolete_version("0.1.0.1", "Tor 0.1.0.2,Tor 0.0.9.5,Tor 0.1.1.0"));
test_eq(VS_UNRECOMMENDED,
tor_version_is_obsolete("0.1.0.1", "Tor 0.1.0.2,Tor 0.0.9.5,Tor 0.1.1.0"));
/* On list, not newer than any on same series. */
test_eq(1, is_obsolete_version("0.1.0.1", "Tor 0.1.0.2,Tor 0.0.9.5,Tor 0.1.1.0"));
test_eq(VS_UNRECOMMENDED,
tor_version_is_obsolete("0.1.0.1", "Tor 0.1.0.2,Tor 0.0.9.5,Tor 0.1.1.0"));
test_eq(0, tor_version_as_new_as("Tor 0.0.5", "0.0.9pre1-cvs"));
test_eq(1, tor_version_as_new_as(