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Create a CacheDirectory and KeyDirectory options. 

They work the same as DataDirectory, but default slightly different.

Tor is not actually updated to use them yet.
This commit is contained in:
Nick Mathewson 2017-11-14 17:07:40 -05:00
parent 39a780e85a
commit a9806af261
3 changed files with 81 additions and 11 deletions
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75
src/or/config.c
View File

@ -253,6 +253,8 @@ static config_var_t option_vars_[] = {
V(BridgeRecordUsageByCountry, BOOL, "1"),
V(BridgeRelay, BOOL, "0"),
V(BridgeDistribution, STRING, NULL),
VAR("CacheDirectory", FILENAME, CacheDirectory_option, NULL),
V(CacheDirectoryGroupReadable, BOOL, "0"),
V(CellStatistics, BOOL, "0"),
V(PaddingStatistics, BOOL, "1"),
V(LearnCircuitBuildTimeout, BOOL, "1"),
@ -392,6 +394,8 @@ static config_var_t option_vars_[] = {
V(Socks5Proxy, STRING, NULL),
V(Socks5ProxyUsername, STRING, NULL),
V(Socks5ProxyPassword, STRING, NULL),
VAR("KeyDirectory", FILENAME, KeyDirectory_option, NULL),
V(KeyDirectoryGroupReadable, BOOL, "0"),
V(KeepalivePeriod, INTERVAL, "5 minutes"),
V(KeepBindCapabilities, AUTOBOOL, "auto"),
VAR("Log", LINELIST, Logs, NULL),
@ -733,7 +737,7 @@ static int parse_ports(or_options_t *options, int validate_only,
static int check_server_ports(const smartlist_t *ports,
const or_options_t *options,
int *num_low_ports_out);
static int validate_data_directory(or_options_t *options);
static int validate_data_directories(or_options_t *options);
static int write_configuration_file(const char *fname,
const or_options_t *options);
static int options_init_logs(const or_options_t *old_options,
@ -942,6 +946,8 @@ or_options_free(or_options_t *options)
smartlist_free(options->FilesOpenedByIncludes);
}
tor_free(options->DataDirectory);
tor_free(options->CacheDirectory);
tor_free(options->KeyDirectory);
tor_free(options->BridgePassword_AuthDigest_);
tor_free(options->command_arg);
tor_free(options->master_key_fname);
@ -1305,13 +1311,11 @@ create_keys_directory(const or_options_t *options)
options->DataDirectory);
return -1;
}
/* Check the key directory. */
char *keydir = options_get_datadir_fname(options, "keys");
if (check_private_dir(keydir, CPD_CREATE, options->User)) {
tor_free(keydir);
if (check_private_dir(options->KeyDirectory, CPD_CREATE, options->User)) {
return -1;
}
tor_free(keydir);
return 0;
}
@ -1479,6 +1483,20 @@ options_act_reversible(const or_options_t *old_options, char **msg)
msg) < 0) {
goto done;
}
if (check_and_create_data_directory(running_tor /* create */,
options->KeyDirectory,
options->KeyDirectoryGroupReadable,
options->User,
msg) < 0) {
goto done;
}
if (check_and_create_data_directory(running_tor /* create */,
options->CacheDirectory,
options->CacheDirectoryGroupReadable,
options->User,
msg) < 0) {
goto done;
}
/* Bail out at this point if we're not going to be a client or server:
* we don't run Tor itself. */
@ -3240,7 +3258,7 @@ options_validate(or_options_t *old_options, or_options_t *options,
if (parse_outbound_addresses(options, 1, msg) < 0)
return -1;
if (validate_data_directory(options)<0)
if (validate_data_directories(options)<0)
REJECT("Invalid DataDirectory");
if (options->Nickname == NULL) {
@ -4638,6 +4656,22 @@ options_transition_allowed(const or_options_t *old,
return -1;
}
if (!opt_streq(old->KeyDirectory, new_val->KeyDirectory)) {
tor_asprintf(msg,
"While Tor is running, changing KeyDirectory "
"(\"%s\"->\"%s\") is not allowed.",
old->KeyDirectory, new_val->KeyDirectory);
return -1;
}
if (!opt_streq(old->CacheDirectory, new_val->CacheDirectory)) {
tor_asprintf(msg,
"While Tor is running, changing CacheDirectory "
"(\"%s\"->\"%s\") is not allowed.",
old->CacheDirectory, new_val->CacheDirectory);
return -1;
}
if (!opt_streq(old->User, new_val->User)) {
*msg = tor_strdup("While Tor is running, changing User is not allowed.");
return -1;
@ -7774,10 +7808,10 @@ get_data_directory(const char *val)
#endif /* defined(_WIN32) */
}
/** Check and normalize the value of options->DataDirectory; return 0 if it
* is sane, -1 otherwise. */
/** Check and normalize the values of options->{Key,Data,Cache}Directory;
* return 0 if it is sane, -1 otherwise. */
static int
validate_data_directory(or_options_t *options)
validate_data_directories(or_options_t *options)
{
tor_free(options->DataDirectory);
options->DataDirectory = get_data_directory(options->DataDirectory_option);
@ -7787,6 +7821,29 @@ validate_data_directory(or_options_t *options)
log_warn(LD_CONFIG, "DataDirectory is too long.");
return -1;
}
tor_free(options->KeyDirectory);
if (options->KeyDirectory_option) {
options->KeyDirectory = get_data_directory(options->KeyDirectory_option);
if (!options->KeyDirectory)
return -1;
} else {
/* Default to the data directory's keys subdir */
tor_asprintf(&options->KeyDirectory, "%s"PATH_SEPARATOR"keys",
options->DataDirectory);
}
tor_free(options->CacheDirectory);
if (options->CacheDirectory_option) {
options->CacheDirectory = get_data_directory(
options->CacheDirectory_option);
if (!options->CacheDirectory)
return -1;
} else {
/* Default to the data directory. */
options->CacheDirectory = tor_strdup(options->DataDirectory);
}
return 0;
}

6
src/or/main.c
View File

@ -3571,7 +3571,8 @@ sandbox_init_filter(void)
OPEN_DATADIR2(name, name2 suffix); \
} while (0)
#define OPEN_KEY_DIRECTORY() OPEN_DATADIR("keys")
#define OPEN_KEY_DIRECTORY() \
sandbox_cfg_allow_open_filename(&cfg, tor_strdup(options->KeyDirectory))
#define OPEN_CACHEDIR(name) \
sandbox_cfg_allow_open_filename(&cfg, get_cachedir_fname(name))
#define OPEN_CACHEDIR_SUFFIX(name, suffix) do { \
@ -3687,7 +3688,8 @@ sandbox_init_filter(void)
#define STAT_DATADIR2(name, name2) \
sandbox_cfg_allow_stat_filename(&cfg, get_datadir_fname2((name), (name2)))
#define STAT_KEY_DIRECTORY() STAT_DATADIR("keys")
#define STAT_KEY_DIRECTORY() \
sandbox_cfg_allow_stat_filename(&cfg, tor_strdup(options->KeyDirectory))
STAT_DATADIR(NULL);
STAT_DATADIR("lock");

11
src/or/or.h
View File

@ -3645,6 +3645,17 @@ typedef struct {
* configured by the user. */
char *DataDirectory; /**< Where to store long-term data, as modified. */
int DataDirectoryGroupReadable; /**< Boolean: Is the DataDirectory g+r? */
char *KeyDirectory_option; /**< Where to store keys, as
* configured by the user. */
char *KeyDirectory; /**< Where to store keys data, as modified. */
int KeyDirectoryGroupReadable; /**< Boolean: Is the KeyDirectory g+r? */
char *CacheDirectory_option; /**< Where to store cached data, as
* configured by the user. */
char *CacheDirectory; /**< Where to store cached data, as modified. */
int CacheDirectoryGroupReadable; /**< Boolean: Is the CacheDirectory g+r? */
char *Nickname; /**< OR only: nickname of this onion router. */
char *Address; /**< OR only: configured address for this onion router. */
char *PidFile; /**< Where to store PID of Tor process. */