From: Peter Lieven <pl@kamp.de>
Date: Mon, 23 Dec 2013 12:35:31 +0000 (+0100)
Subject: add uid and gid URL param to specify alternate uid and/or gid
X-Git-Tag: upstream/1.9.6^2~163^2~3
X-Git-Url: https://git.piment-noir.org/?p=deb_libnfs.git;a=commitdiff_plain;h=9126c9c0366028cb799978d145fd361c6635b5f4

add uid and gid URL param to specify alternate uid and/or gid

This allows to connect with an alternate uid or gid than that
of the current user.

Example:
 examples/nfs-ls nfs://10.0.0.1/export?uid=1000&gid=33

Signed-off-by: Peter Lieven <pl@kamp.de>
---

diff --git a/include/libnfs-private.h b/include/libnfs-private.h
index 6b64033..a2f3e1a 100644
--- a/include/libnfs-private.h
+++ b/include/libnfs-private.h
@@ -97,6 +97,8 @@ struct rpc_context {
 	
 	/* parameters passable via URL */
 	int tcp_syncnt;
+	int uid;
+	int gid;
 };
 
 struct rpc_pdu {
@@ -140,6 +142,8 @@ void rpc_set_autoreconnect(struct rpc_context *rpc);
 void rpc_unset_autoreconnect(struct rpc_context *rpc);
 
 void rpc_set_tcp_syncnt(struct rpc_context *rpc, int v);
+void rpc_set_uid(struct rpc_context *rpc, int uid);
+void rpc_set_gid(struct rpc_context *rpc, int gid);
 
 int rpc_add_fragment(struct rpc_context *rpc, char *data, uint64_t size);
 void rpc_free_all_fragments(struct rpc_context *rpc);
diff --git a/include/nfsc/libnfs.h b/include/nfsc/libnfs.h
index 1035810..1ea7561 100644
--- a/include/nfsc/libnfs.h
+++ b/include/nfsc/libnfs.h
@@ -77,7 +77,6 @@ EXTERN int nfs_queue_length(struct nfs_context *nfs);
 struct AUTH;
 EXTERN void nfs_set_auth(struct nfs_context *nfs, struct AUTH *auth);
 
-
 /*
  * When an operation failed, this function can extract a detailed error string.
  */
diff --git a/lib/init.c b/lib/init.c
index bb2fe17..df3c2aa 100644
--- a/lib/init.c
+++ b/lib/init.c
@@ -74,6 +74,13 @@ struct rpc_context *rpc_init_context(void)
 	salt += 0x01000000;
 	rpc->fd = -1;
 	rpc->tcp_syncnt = RPC_PARAM_UNDEFINED;
+#ifdef WIN32
+	rpc->uid = 65534;
+	rpc->gid = 65534;
+#else
+	rpc->uid = getuid();
+	rpc->gid = getgid();
+#endif
 
 	return rpc;
 }
@@ -101,6 +108,24 @@ void rpc_set_auth(struct rpc_context *rpc, struct AUTH *auth)
 	rpc->auth = auth;
 }
 
+static void rpc_set_uid_gid(struct rpc_context *rpc, int uid, int gid) {
+	if (uid != rpc->uid || gid != rpc->gid) {
+		struct AUTH *auth = libnfs_authunix_create("libnfs", uid, gid, 0, NULL);
+		if (auth != NULL) {
+			rpc_set_auth(rpc, auth);
+			rpc->uid = uid;
+			rpc->gid = gid;
+		}
+	}
+}
+
+void rpc_set_uid(struct rpc_context *rpc, int uid) {
+	rpc_set_uid_gid(rpc, uid, rpc->gid);
+}
+
+void rpc_set_gid(struct rpc_context *rpc, int gid) {
+	rpc_set_uid_gid(rpc, rpc->uid, gid);
+}
 
 void rpc_set_error(struct rpc_context *rpc, char *error_string, ...)
 {
diff --git a/lib/libnfs.c b/lib/libnfs.c
index cd15fb0..f7a2bf0 100644
--- a/lib/libnfs.c
+++ b/lib/libnfs.c
@@ -282,6 +282,10 @@ flags:
 			strp2++;
 			if (!strncmp(strp, "tcp-syncnt", 10)) {
 				rpc_set_tcp_syncnt(nfs->rpc, atoi(strp2));
+			} else if (!strncmp(strp, "uid", 3)) {
+				rpc_set_uid(nfs->rpc, atoi(strp2));
+			} else if (!strncmp(strp, "gid", 3)) {
+				rpc_set_gid(nfs->rpc, atoi(strp2));
 			}
 		}
 	}