Add .x as XDR/RPCGEN (#3472)

* Add .x as XDR/RPCGEN XDR/RPC language as documented in RFC5531, RFC4506. Samples are from glibc and RFCs. * Add Logos samples https://github.com/JonasGessner/NoCarrier/blob/master/NoCarrier.x - MIT cf31f4e466/llvm-gcc-R3/gcc/testsuite/objc/execute/string1.x - GPL2 f6415578fa/perapp-plugin/Tweak.x - GPL3 d1b3e83888/NCHax.x - Apache * Add disambiguate heuristics for .x * Add RPC to vendor/README.md
2025-12-28 21:01:00 +00:00 · 2018-01-25 04:15:09 -05:00
parent 8da6ddf9d9
commit 60f748d47b
10 changed files with 1048 additions and 0 deletions
--- a/samples/RPC/rpc.x
+++ b/samples/RPC/rpc.x
@@ -0,0 +1,146 @@
+/* rpc.x extracted from RFC5531 */
+
+const RPC_VERS = 2;
+
+enum auth_flavor {
+	AUTH_NONE       = 0,
+	AUTH_SYS        = 1,
+	AUTH_SHORT      = 2,
+	AUTH_DH         = 3,
+	AUTH_KERB       = 4, /* RFC2695 */
+	AUTH_RSA        = 5,
+	RPCSEC_GSS      = 6  /* RFC2203 */
+	/* and more to be defined */
+};
+
+typedef opaque opaque_auth_body<400>;
+
+struct opaque_auth {
+	int flavor; /* may be "pseudo" value outside enum */
+	opaque_auth_body body;
+};
+
+enum msg_type {
+	CALL  = 0,
+	REPLY = 1
+};
+
+enum reply_stat {
+	MSG_ACCEPTED = 0,
+	MSG_DENIED   = 1
+};
+
+enum accept_stat {
+	SUCCESS       = 0, /* RPC executed successfully       */
+	PROG_UNAVAIL  = 1, /* remote hasn't exported program  */
+	PROG_MISMATCH = 2, /* remote can't support version #  */
+	PROC_UNAVAIL  = 3, /* program can't support procedure */
+	GARBAGE_ARGS  = 4, /* procedure can't decode params   */
+	SYSTEM_ERR    = 5  /* e.g. memory allocation failure  */
+};
+
+enum reject_stat {
+	RPC_MISMATCH = 0, /* RPC version number != 2          */
+	AUTH_ERROR = 1    /* remote can't authenticate caller */
+};
+
+enum auth_stat {
+	AUTH_OK           = 0,  /* success                        */
+	/*
+	 * failed at remote end
+	 */
+	AUTH_BADCRED      = 1,  /* bad credential (seal broken)   */
+	AUTH_REJECTEDCRED = 2,  /* client must begin new session  */
+	AUTH_BADVERF      = 3,  /* bad verifier (seal broken)     */
+	AUTH_REJECTEDVERF = 4,  /* verifier expired or replayed   */
+	AUTH_TOOWEAK      = 5,  /* rejected for security reasons  */
+	/*
+	 * failed locally
+	 */
+	AUTH_INVALIDRESP  = 6,  /* bogus response verifier        */
+	AUTH_FAILED       = 7,  /* reason unknown                 */
+	/*
+	 * AUTH_KERB errors; deprecated.  See [[139]RFC2695]
+	 */
+	AUTH_KERB_GENERIC = 8,  /* kerberos generic error */
+	AUTH_TIMEEXPIRE = 9,    /* time of credential expired */
+	AUTH_TKT_FILE = 10,     /* problem with ticket file */
+	AUTH_DECODE = 11,       /* can't decode authenticator */
+	AUTH_NET_ADDR = 12,     /* wrong net address in ticket */
+	/*
+	 * RPCSEC_GSS GSS related errors
+	 */
+	RPCSEC_GSS_CREDPROBLEM = 13, /* no credentials for user */
+	RPCSEC_GSS_CTXPROBLEM = 14   /* problem with context */
+};
+
+struct rpc_msg {
+	unsigned int xid;
+	union rpc_msg_body body;
+};
+
+union rpc_msg_body switch (msg_type mtype) {
+	case CALL:
+		call_body cbody;
+	case REPLY:
+		reply_body rbody;
+};
+
+struct call_body {
+	unsigned int rpcvers;       /* must be equal to two (2) */
+	unsigned int prog;
+	unsigned int vers;
+	unsigned int proc;
+	opaque_auth cred;
+	opaque_auth verf;
+	/* procedure-specific parameters start here */
+};
+
+union reply_body switch (reply_stat stat) {
+	case MSG_ACCEPTED:
+		accepted_reply areply;
+	case MSG_DENIED:
+		rejected_reply rreply;
+} /*reply*/;
+
+struct accepted_reply {
+	opaque_auth verf;
+	union accepted_reply_data reply_data;
+};
+
+union accepted_reply_data switch (accept_stat stat) {
+	case SUCCESS:
+		void /* opaque results[0] */;
+		/*
+		 * procedure-specific results start here
+		 */
+	case PROG_MISMATCH:
+		struct {
+			unsigned int low;
+			unsigned int high;
+		} mismatch_info;
+	default:
+		/*
+		 * Void.  Cases include PROG_UNAVAIL, PROC_UNAVAIL,
+		 * GARBAGE_ARGS, and SYSTEM_ERR.
+		 */
+		void;
+};
+
+union rejected_reply switch (reject_stat stat) {
+	case RPC_MISMATCH:
+		struct {
+			unsigned int low;
+			unsigned int high;
+		} mismatch_info;
+	case AUTH_ERROR:
+		auth_stat auth_stat; /* renamed to avoid conflict with discriminator */
+};
+
+struct authsys_parms {
+	unsigned int stamp;
+	string machinename<255>;
+	unsigned int uid;
+	unsigned int gid;
+	unsigned int gids<16>;
+};