commit 6564291601540bf61c1ca3294b6c22f0c5021a20 Author: Andrea Shepard <andrea@torproject.org> Date: Fri Jan 23 14:45:12 2015 +0000 Handle config options for AF_UNIX hidden services rendservice.c --- src/or/rendservice.c | 58 ++++++++++++++++++++++++++++++++++++++++++++------ 1 file changed, 51 insertions(+), 7 deletions(-) diff --git a/src/or/rendservice.c b/src/or/rendservice.c index 2e0f83c..fac782b 100644 --- a/src/or/rendservice.c +++ b/src/or/rendservice.c @@ -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->real_port = realport; - tor_addr_copy(&result->real_addr, &addr); + 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; }