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authorMatthias Wachs <wachs@net.in.tum.de>2014-02-10 16:48:43 +0000
committerMatthias Wachs <wachs@net.in.tum.de>2014-02-10 16:48:43 +0000
commit024cddbd2e996eac42fb6de8a9424dcc73644cd0 (patch)
tree3901d8f06c85c45e55b0aeb28648967d5bbabb6b /src/transport/plugin_transport_unix.c
parentfe08b2dee0232b40dab22f94dbee8a89a922da83 (diff)
abstract unix domain socket support
Diffstat (limited to 'src/transport/plugin_transport_unix.c')
-rw-r--r--src/transport/plugin_transport_unix.c154
1 files changed, 100 insertions, 54 deletions
diff --git a/src/transport/plugin_transport_unix.c b/src/transport/plugin_transport_unix.c
index ec0956c0b..7bffa220d 100644
--- a/src/transport/plugin_transport_unix.c
+++ b/src/transport/plugin_transport_unix.c
@@ -45,6 +45,13 @@
#define PLUGIN_NAME "unix"
+enum UNIX_ADDRESS_OPTIONS
+{
+ UNIX_OPTIONS_NONE = 0,
+ UNIX_OPTIONS_USE_ABSTRACT_SOCKETS = 1
+};
+
+
/**
* How long until we give up on transmitting the welcome message?
*/
@@ -81,12 +88,6 @@ struct UNIXMessage
};
GNUNET_NETWORK_STRUCT_END
-
-/**
- * Address options
- */
-static uint32_t myoptions;
-
/**
* Handle for a session.
*/
@@ -298,6 +299,12 @@ struct Plugin
struct UNIX_Sock_Info unix_sock;
/**
+ * Address options in HBO
+ */
+ uint32_t myoptions;
+
+
+ /**
* ATS network
*/
struct GNUNET_ATS_Information ats_network;
@@ -309,6 +316,7 @@ struct Plugin
*/
int with_ws;
+ int abstract;
};
@@ -332,6 +340,29 @@ reschedule_session_timeout (struct Session *s);
static void
unix_plugin_select (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
+static struct sockaddr_un *
+unix_address_to_sockaddr (const char *unixpath,
+ socklen_t *sock_len)
+{
+ struct sockaddr_un *un;
+ size_t slen;
+
+ GNUNET_assert (0 < strlen (unixpath)); /* sanity check */
+ un = GNUNET_new (struct sockaddr_un);
+ un->sun_family = AF_UNIX;
+ slen = strlen (unixpath);
+ if (slen >= sizeof (un->sun_path))
+ slen = sizeof (un->sun_path) - 1;
+ memcpy (un->sun_path, unixpath, slen);
+ un->sun_path[slen] = '\0';
+ slen = sizeof (struct sockaddr_un);
+#if HAVE_SOCKADDR_IN_SIN_LEN
+ un->sun_len = (u_char) slen;
+#endif
+ (*sock_len) = slen;
+ return un;
+}
+
/**
* Function called for a quick conversion of the binary address to
@@ -351,6 +382,7 @@ unix_address_to_string (void *cls, const void *addr, size_t addrlen)
struct UnixAddress *ua = (struct UnixAddress *) addr;
char *addrstr;
size_t addr_str_len;
+ unsigned int off;
if ((NULL == addr) || (sizeof (struct UnixAddress) > addrlen))
{
@@ -377,46 +409,23 @@ unix_address_to_string (void *cls, const void *addr, size_t addrlen)
return NULL ;
}
+ off = 0;
+ if ('\0' == addrstr[0])
+ off++;
+ memset (rbuf, 0, sizeof (rbuf));
+ GNUNET_snprintf (rbuf, sizeof (rbuf) - 1, "%s.%u.%s%.*s",
+ PLUGIN_NAME,
+ ntohl (ua->options),
+ (off == 1) ? "@" : "",
+ (int) (addr_str_len - off),
+ &addrstr[off]);
+/*
GNUNET_snprintf (rbuf, sizeof(rbuf), "%s.%u.%s", PLUGIN_NAME,
- ntohl (ua->options), addrstr);
+ ntohl (ua->options), addrstr);*/
return rbuf;
}
-static struct sockaddr_un *
-unix_address_to_sockaddr (const struct GNUNET_CONFIGURATION_Handle *cfg,
- const char *unixpath,
- socklen_t *sock_len)
-{
- struct sockaddr_un *un;
- size_t slen;
-
- GNUNET_assert (0 < strlen (unixpath)); /* sanity check */
- un = GNUNET_new (struct sockaddr_un);
- un->sun_family = AF_UNIX;
- slen = strlen (unixpath);
- if (slen >= sizeof (un->sun_path))
- slen = sizeof (un->sun_path) - 1;
- memcpy (un->sun_path, unixpath, slen);
- un->sun_path[slen] = '\0';
-#ifdef LINUX
- {
- int abstract;
-
- abstract = GNUNET_CONFIGURATION_get_value_yesno (cfg,
- "TESTING",
- "USE_ABSTRACT_SOCKETS");
- if (GNUNET_YES == abstract)
- un->sun_path[0] = '\0';
- }
-#endif
- slen = sizeof (struct sockaddr_un);
-#if HAVE_SOCKADDR_IN_SIN_LEN
- un->sun_len = (u_char) slen;
-#endif
- (*sock_len) = slen;
- return un;
-}
/**
@@ -645,14 +654,18 @@ unix_real_send (void *cls,
/* Prepare address */
unixpath = (const char *) &addr[1];
- if (NULL == (un = unix_address_to_sockaddr (plugin->env->cfg,
- unixpath,
+ if (NULL == (un = unix_address_to_sockaddr (unixpath,
&un_len)))
{
GNUNET_break (0);
return -1;
}
+ if ((GNUNET_YES == plugin->abstract) &&
+ (0 != (UNIX_OPTIONS_USE_ABSTRACT_SOCKETS & ntohl(addr->options) )) )
+ {
+ un->sun_path[0] = '\0';
+ }
resend:
/* Send the data */
sent = GNUNET_NETWORK_socket_sendto (send_handle, msgbuf, msgbuf_size,
@@ -811,6 +824,7 @@ unix_plugin_get_session (void *cls,
struct UnixAddress *ua;
char * addrstr;
uint32_t addr_str_len;
+ uint32_t addr_option;
GNUNET_assert (NULL != plugin);
GNUNET_assert (NULL != address);
@@ -822,14 +836,21 @@ unix_plugin_get_session (void *cls,
GNUNET_break (0);
return NULL;
}
- addrstr = (char *) &ua[1];
- addr_str_len = ntohl (ua->addrlen);
- if (addr_str_len != address->address_length - sizeof (struct UnixAddress))
+ addrstr = (char *) &ua[1];
+ addr_str_len = ntohl (ua->addrlen);
+ addr_option = ntohl (ua->options);
+
+ if ( (0 != (UNIX_OPTIONS_USE_ABSTRACT_SOCKETS & addr_option)) &&
+ (GNUNET_NO == plugin->abstract))
{
- /* This can be a legacy address */
return NULL;
}
+ if (addr_str_len != address->address_length - sizeof (struct UnixAddress))
+ {
+ return NULL; /* This can be a legacy address */
+ }
+
if ('\0' != addrstr[addr_str_len - 1])
{
GNUNET_break (0);
@@ -1045,6 +1066,7 @@ unix_plugin_select_read (struct Plugin *plugin)
ssize_t ret;
int offset;
int tsize;
+ int is_abstract;
char *msgbuf;
const struct GNUNET_MessageHeader *currhdr;
uint16_t csize;
@@ -1074,11 +1096,21 @@ unix_plugin_select_read (struct Plugin *plugin)
}
GNUNET_assert (AF_UNIX == (un.sun_family));
+ is_abstract = GNUNET_NO;
+ if ('\0' == un.sun_path[0])
+ {
+ un.sun_path[0] = '@';
+ is_abstract = GNUNET_YES;
+ }
+
ua_len = sizeof (struct UnixAddress) + strlen (un.sun_path) + 1;
ua = GNUNET_malloc (ua_len);
ua->addrlen = htonl (strlen (&un.sun_path[0]) +1);
- ua->options = htonl (0);
memcpy (&ua[1], &un.sun_path[0], strlen (un.sun_path) + 1);
+ if (is_abstract)
+ ua->options = htonl(UNIX_OPTIONS_USE_ABSTRACT_SOCKETS);
+ else
+ ua->options = htonl(UNIX_OPTIONS_NONE);
msg = (struct UNIXMessage *) buf;
csize = ntohs (msg->header.size);
@@ -1266,9 +1298,13 @@ unix_transport_server_start (void *cls)
struct sockaddr_un *un;
socklen_t un_len;
- un = unix_address_to_sockaddr (plugin->env->cfg,
- plugin->unix_socket_path,
+ un = unix_address_to_sockaddr (plugin->unix_socket_path,
&un_len);
+ if (GNUNET_YES == plugin->abstract)
+ {
+ plugin->unix_socket_path[0] = '@';
+ un->sun_path[0] = '\0';
+ }
plugin->ats_network = plugin->env->get_address_type (plugin->env->cls, (const struct sockaddr *) un, un_len);
plugin->unix_sock.desc =
GNUNET_NETWORK_socket_create (AF_UNIX, SOCK_DGRAM, 0);
@@ -1487,12 +1523,14 @@ address_notification (void *cls,
struct GNUNET_HELLO_Address *address;
size_t len;
struct UnixAddress *ua;
+ char *unix_path;
len = sizeof (struct UnixAddress) + strlen (plugin->unix_socket_path) + 1;
ua = GNUNET_malloc (len);
- ua->options = htonl (myoptions);
+ ua->options = htonl (plugin->myoptions);
ua->addrlen = htonl(strlen (plugin->unix_socket_path) + 1);
- memcpy (&ua[1], plugin->unix_socket_path, strlen (plugin->unix_socket_path) + 1);
+ unix_path = (char *) &ua[1];
+ memcpy (unix_path, plugin->unix_socket_path, strlen (plugin->unix_socket_path) + 1);
plugin->address_update_task = GNUNET_SCHEDULER_NO_TASK;
address = GNUNET_HELLO_address_allocate (plugin->env->my_identity,
@@ -1608,7 +1646,15 @@ libgnunet_plugin_transport_unix_init (void *cls)
plugin->env = env;
/* Initialize my flags */
- myoptions = 0;
+#ifdef LINUX
+ plugin->abstract = GNUNET_CONFIGURATION_get_value_yesno (plugin->env->cfg,
+ "testing", "USE_ABSTRACT_SOCKETS");
+#endif
+ plugin->myoptions = UNIX_OPTIONS_NONE;
+ if (GNUNET_YES == plugin->abstract)
+ {
+ plugin->myoptions = UNIX_OPTIONS_USE_ABSTRACT_SOCKETS;
+ }
api = GNUNET_new (struct GNUNET_TRANSPORT_PluginFunctions);
api->cls = plugin;
@@ -1658,7 +1704,7 @@ libgnunet_plugin_transport_unix_done (void *cls)
len = sizeof (struct UnixAddress) + strlen (plugin->unix_socket_path) + 1;
ua = GNUNET_malloc (len);
- ua->options = htonl (myoptions);
+ ua->options = htonl (plugin->myoptions);
ua->addrlen = htonl(strlen (plugin->unix_socket_path) + 1);
memcpy (&ua[1], plugin->unix_socket_path, strlen (plugin->unix_socket_path) + 1);
address = GNUNET_HELLO_address_allocate (plugin->env->my_identity,