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Handle config options for AF_UNIX hidden services rendservice.c

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This commit is contained in:
Andrea Shepard 2015-01-23 14:45:12 +00:00 committed by Nick Mathewson
parent 03d6a31716
commit 6564291601
1 changed files with 51 additions and 7 deletions
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54
src/or/rendservice.c
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@ -308,10 +308,26 @@ rend_add_service(rend_service_t *service)
}
}
/** Return a new rend_service_port_config_t with its path set to
* <b>socket_path</b> or empty if <b>socket_path</b> is NULL */
static rend_service_port_config_t *
rend_service_port_config_new(const char *socket_path)
{
if (!socket_path)
return tor_malloc_zero(sizeof(rend_service_port_config_t));
const size_t pathlen = strlen(socket_path) + 1;
rend_service_port_config_t *conf =
tor_malloc_zero(sizeof(rend_service_port_config_t) + pathlen);
memcpy(conf->unix_addr, socket_path, pathlen);
conf->is_unix_addr = 1;
return conf;
}
/** Parses a real-port to virtual-port mapping and returns a new
* rend_service_port_config_t.
*
* The format is: VirtualPort (IP|RealPort|IP:RealPort)?
* The format is: VirtualPort (IP|RealPort|IP:RealPort|'socket':path)?
*
* IP defaults to 127.0.0.1; RealPort defaults to VirtualPort.
*/
@ -325,6 +341,9 @@ parse_port_config(const char *string)
tor_addr_t addr;
const char *addrport;
rend_service_port_config_t *result = NULL;
const char *socket_prefix = "socket:";
unsigned int is_unix_addr = 0;
char *socket_path = NULL;
sl = smartlist_new();
smartlist_split_string(sl, string, " ",
@ -347,7 +366,26 @@ parse_port_config(const char *string)
tor_addr_from_ipv4h(&addr, 0x7F000001u); /* 127.0.0.1 */
} else {
addrport = smartlist_get(sl,1);
if (strchr(addrport, ':') || strchr(addrport, '.')) {
/* If it starts with socket:, try to parse it as a socket path */
if (!strcmpstart(addrport, socket_prefix)) {
if (strlen(addrport + strlen(socket_prefix)) > 0) {
#ifdef HAVE_SYS_UN_H
is_unix_addr = 1;
socket_path = tor_strdup(addrport + strlen(socket_prefix));
#else
log_warn(LD_CONFIG,
"Hidden service port configuration %s is for an AF_UNIX "
"socket, but we have no support available on this platform",
escaped(addrport));
goto err;
#endif /* defined(HAVE_SYS_UN_H) */
} else {
log_warn(LD_CONFIG,
"Empty socket path in hidden service port configuration.");
goto err;
}
} else if (strchr(addrport, ':') || strchr(addrport, '.')) {
/* else try it as an IP:port pair if it has a : or . in it */
if (tor_addr_port_lookup(addrport, &addr, &p)<0) {
log_warn(LD_CONFIG,"Unparseable address in hidden service port "
"configuration.");
@ -366,15 +404,21 @@ parse_port_config(const char *string)
}
}
result = tor_malloc(sizeof(rend_service_port_config_t));
/* Allow room for unix_addr */
result = rend_service_port_config_new(socket_path);
result->virtual_port = virtport;
/* TODO actually support AF_UNIX here */
result->is_unix_addr = 0;
result->is_unix_addr = is_unix_addr;
if (!is_unix_addr) {
result->real_port = realport;
tor_addr_copy(&result->real_addr, &addr);
result->unix_addr[0] = '\0';
}
err:
SMARTLIST_FOREACH(sl, char *, c, tor_free(c));
smartlist_free(sl);
if (socket_path) tor_free(socket_path);
return result;
}