Be a bit more resilient to errors.

src/cmd/netfiles/main.c

@@ -462,7 +462,7 @@ do3(Win *w, char *text)
 	cleanname(name);
 	cprint("b3 \t=> name=%s addr=%s\n", name, addr);
 	if(strcmp(name, lastfail) == 0){
-		cprint("b3 \t=> non-existant (cached)\n");
+		cprint("b3 \t=> nonexistent (cached)\n");
 		free(name);
 		return -1;
 	}

src/cmd/netfiles/netfileget

@@ -13,33 +13,34 @@ if(! ~ $#* 2){
 
 . netfilelib.rc $1
 
-fn getfile {
-	rm -f $t
-	if(! 9 echo -get $2 $t | mysftp $1 >$t.e >[2=1])
-		exit 1
-	egrep -v '^Fetching' $t.e >$t.e2
-	if(test -s $t.e2){
-		cat $t.e >[1=2]
-		exit 1
-	}
-	cat $t
-}
-
 fn getfile9p {
 	if(! 9p read $1/$2)
 		exit 1
 }
 
-fn getdir {
-	if(! {echo cd $2; echo ls -l} | mysftp $1 | sed '1,2d; s/sftp> //g; /^$/d' >$t)
-		exit 1
-	cat $t | awk '$NF == "." || $NF == ".." { next } {s = $NF; if($0 ~ /^d/) s = s "/"; print s}'
-}
-
 fn getdir9p {
 	9p ls -l $1/$2 | awk '{s=$NF; if($0 ~ /^d/) s=s"/"; print s}'
 }
 
+fn getfile {
+	rm -f $t
+	echo get $2 $t | runsftp -e $1
+	cat $t
+}
+
+fn getdir {
+	{echo cd $2; echo ls -l} | runsftp $1
+	awk '
+		$NF == "." || $NF == ".." { next } 
+		{
+			s = $NF
+			if($0 ~ /^d/)
+				s = s "/"
+			print s
+		}
+	' $t.sftp
+}
+
 $f $1 $2
 exit 0
 

src/cmd/netfiles/netfilelib.rc

@@ -3,19 +3,43 @@ ns=`{namespace}
 if(</dev/null dial 'unix!'^$ns/$1 >[2]/dev/null)
 	f=$f^9p
 
-fn mysftp {
-	if(! </dev/null dial 'unix!'^$ns/$1.sftp >[2]/dev/null){
-		echo 'caching sftp' $1 >[1=2]
-		sftpcache -D $1
+t=/tmp/netfilexxx.$pid.$USER
+fn sigexit { rm -f $t $t.* }
+
+fn runsftp {
+	eflag=no
+	if(~ $1 -e){
+		eflag=yes
+		shift
 	}
 	if(! </dev/null dial 'unix!'^$ns/$1.sftp >[2]/dev/null){
-		sftp -b /dev/stdin $1
+		sftpcache -D $1 >/dev/tty
 	}
-	if not{
-		{cat; echo DONE} | dial -e 'unix!'^$ns/$1.sftp
+	{
+		if(! </dev/null dial 'unix!'^$ns/$1.sftp >[2]/dev/null){
+			sed 's/^/-/' | sftp -b /dev/stdin $1 && echo DONE
+		}
+		if not{
+			{cat; echo DONE} | dial -e 'unix!'^$ns/$1.sftp
+		}
+	} >$t.sftp1 >[2=1]
+	sed 's/^/1 /' $t.sftp1
+	sed '/^sftp> /d
+		/^Connecting to /d
+		/^Fetching /d
+		/^Uploading /d
+		/^DONE$/d
+	' $t.sftp1 >$t.sftp
+	if(! 9 grep -s '^DONE$' $t.sftp1){
+		echo sftp did not finish: >[1=2]
+		sed 's/^/	/g' $t.sftp1 >[1=2]
+		exit 1
 	}
+	if(~ $eflag yes && test -s $t.sftp){
+		echo sftp error output: >[1=2]
+		sed '/^DONE$/d; s/^/	/g' $t.sftp1 >[1=2]
+		exit 1
+	}
+	status=''
 }
 
-t=/tmp/netfilexxx.$pid.$USER
-fn sigexit { rm -f $t $t.e $t.e2 }
-

src/cmd/netfiles/netfileput

@@ -11,13 +11,7 @@ f=putfile
 
 fn putfile{
 	cat >$t
-	if(! 9 echo -put $t $2 | mysftp $1 >$t.e >[2=1])
-		exit 1
-	egrep -v '^Uploading' $t.e >$t.e2
-	if(test -s $t.e2){
-		cat $t.e >[1=2]
-		exit 1
-	}
+	echo put $t $2 | runsftp -e $1
 }
 fn putfile9p{
 	if(! 9p write $1/$2)

src/cmd/netfiles/netfilestat

@@ -10,23 +10,23 @@ f=dostat
 . netfilelib.rc $1
 
 fn dostat {
-	{
-		9 echo -cd $2
-	}  | mysftp $1 >$t
-	if(9 test -e $t -a ! -s $t){
+	echo cd $2 | runsftp $1
+	if(9 test -e $t.sftp -a ! -s $t.sftp){
 		echo directory
 		exit 0
 	}
-	if(9 grep -s 'Can''t change directory|is not a directory' $t){
+	if(9 grep -s 'Can''t change directory|is not a directory' $t.sftp){
 		echo file
 		exit 0
 	}
-	if(9 grep -s 'Couldn''t stat remote file|such file' $t){
+	if(9 grep -s 'Couldn''t stat remote file|such file' $t.sftp){
 		echo nonexistent
 		exit 0
 	}
-	cat $t >[1=2]
-	echo unknown error
+	{
+		echo unknown error:
+		sed 's/^/	/' $t.sftp 
+	} >[1=2]
 	exit 0
 }