Merge commit 'jrollins/master'

11 files changed, 139 insertions, 93 deletions

diff --git a/src/share/common b/src/share/common
index bd887d3..8e2232d 100644
--- a/src/share/common
+++ b/src/share/common
@@ -291,7 +291,8 @@ Please specify how long the key should be valid.
       <n>y = key expires in n years
 EOF
 	while [ -z "$keyExpire" ] ; do
-	    read -p "Key is valid for? (0) " keyExpire
+	    printf "Key is valid for? (0) " >&2
+	    read keyExpire
 	    if ! test_gpg_expire ${keyExpire:=0} ; then
 		echo "invalid value" >&2
 		unset keyExpire
@@ -483,6 +484,12 @@ get_homedir() {
     eval "echo ~${uname}"
 }
 
+# return the primary group of a user
+get_primary_group() {
+    local uname=${1:-`whoami`}
+    groups "$uname" | sed 's/^..* : //' | awk '{ print $1 }'
+}
+
 ### CONVERSION UTILITIES
 
 # output the ssh key for a given key ID
diff --git a/src/share/m/ssh_proxycommand b/src/share/m/ssh_proxycommand
index 74b0f85..322937b 100644
--- a/src/share/m/ssh_proxycommand
+++ b/src/share/m/ssh_proxycommand
@@ -15,6 +15,55 @@
 # established.  Can be added to ~/.ssh/config as follows:
 #  ProxyCommand monkeysphere ssh-proxycommand %h %p
 
+# output the key info, including the RSA fingerprint
+show_key_info() {
+    local keyid="$1"
+    local sshKeyGPGFile
+    local sshFingerprint
+    local gpgSigOut
+    local otherUids
+
+    # get the ssh key of the gpg key
+    sshKeyGPGFile=$(msmktempfile)
+    gpg2ssh "$keyid" >"$sshKeyGPGFile"
+    sshFingerprint=$(ssh-keygen -l -f "$sshKeyGPGFile" | \
+        awk '{ print $2 }')
+    rm -f "$sshKeyGPGFile"
+
+    # get the sigs for the matching key
+    gpgSigOut=$(gpg_user --check-sigs \
+        --list-options show-uid-validity \
+        "$keyid")
+
+    echo | log info
+
+    # output the sigs, but only those on the user ID
+    # we are looking for
+    echo "$gpgSigOut" | awk '
+{
+if (match($0,"^pub")) { print; }
+if (match($0,"^uid")) { ok=0; }
+if (match($0,"^uid.*'$userID'$")) { ok=1; print; }
+if (ok) { if (match($0,"^sig")) { print; } }
+}
+'
+
+    # output ssh fingerprint
+    cat <<EOF
+RSA key fingerprint is ${sshFingerprint}.
+EOF
+
+    # output the other user IDs for reference
+    otherUids=$(echo "$gpgSigOut" | grep "^uid" | grep -v "$userID")
+    if [ "$otherUids" ] ; then
+	log info <<EOF
+Other user IDs on this key:
+EOF
+	echo "$otherUids" | log info
+    fi
+
+}
+
 # "marginal case" ouput in the case that there is not a full
 # validation path to the host
 output_no_valid_key() {
@@ -28,8 +77,6 @@ output_no_valid_key() {
     local usage
     local sshKeyGPG
     local tmpkey
-    local sshFingerprint
-    local gpgSigOut
     local returnCode=0
 
     userID="ssh://${HOSTP}"
@@ -51,63 +98,34 @@ output_no_valid_key() {
 Monkeysphere found OpenPGP keys for this hostname, but none had full validity.
 EOF
 
-    # if the host key is retrieved from the host, check against known
-    # OpenPGP keys
-    if [ "$sshKeyOffered" ] ; then
-	# find all 'pub' and 'sub' lines in the gpg output, which each
-	# represent a retrieved key for the user ID
-	echo "$gpgOut" | cut -d: -f1,2,5,10,12 | \
-	while IFS=: read -r type validity keyid uidfpr usage ; do
-	    case $type in
-		'pub'|'sub')
-		    # get the ssh key of the gpg key
-		    sshKeyGPG=$(gpg2ssh "$keyid")
+    # output message if host key could not be retrieved from the host
+    if [ -z "$sshKeyOffered" ] ; then
+	log info <<EOF
+Could not retrieve RSA host key from $HOST.
+The following keys were found with marginal validity:
+EOF
+    fi
+
+    # find all 'pub' and 'sub' lines in the gpg output, which each
+    # represent a retrieved key for the user ID
+    echo "$gpgOut" | cut -d: -f1,2,5,10,12 | \
+    while IFS=: read -r type validity keyid uidfpr usage ; do
+	case $type in
+	    'pub'|'sub')
+		# get the ssh key of the gpg key
+		sshKeyGPG=$(gpg2ssh "$keyid")
+
+		# if a key was retrieved from the host...
+		if [ "$sshKeyOffered" ] ; then
 
 		    # if one of keys found matches the one offered by the
 		    # host, then output info
 		    if [ "$sshKeyGPG" = "$sshKeyOffered" ] ; then
 			log info <<EOF
 An OpenPGP key matching the ssh key offered by the host was found:
-
 EOF
 
-			sshKeyGPGFile=$(msmktempfile)
-			printf "%s" "$sshKeyGPG" >"$sshKeyGPGFile"
-			sshFingerprint=$(ssh-keygen -l -f "$sshKeyGPGFile" | \
-			    awk '{ print $2 }')
-			rm -f "$sshKeyGPGFile"
-
-			# get the sigs for the matching key
-			gpgSigOut=$(gpg_user --check-sigs \
-			    --list-options show-uid-validity \
-			    "$keyid")
-
-			# output the sigs, but only those on the user ID
-			# we are looking for
-			echo "$gpgSigOut" | awk '
-{
-if (match($0,"^pub")) {	print; }
-if (match($0,"^uid")) { ok=0; }
-if (match($0,"^uid.*'$userID'$")) { ok=1; print; }
-if (ok) { if (match($0,"^sig")) { print; } }
-}
-' | log info
-			echo | log info
-
-			# output the other user IDs for reference
-			if (echo "$gpgSigOut" | grep "^uid" | grep -v -q "$userID") ; then
-			    log info <<EOF
-Other user IDs on this key:
-
-EOF
-			    echo "$gpgSigOut" | grep "^uid" | grep -v "$userID" | log info
-			    echo | log info
-			fi
-
-			# output ssh fingerprint
-			log info <<EOF
-RSA key fingerprint is ${sshFingerprint}.
-EOF
+			show_key_info "$keyid" | log info
 
 			# this whole process is in a "while read"
 			# subshell.  the only way to get information
@@ -117,30 +135,47 @@ EOF
 			# for the ssh key offered by the host
 			return 1
 		    fi
-		    ;;
-	    esac
-	done || returnCode="$?"
 
-	# if no key match was made (and the "while read" subshell
-	# returned 1) output how many keys were found
-	if (( returnCode != 1 )) ; then
+		# else if a key was not retrieved from the host
+		else
+
+		    # if the current key is marginal, show info
+		    if [ "$validity" = 'm' -o "$validity" = 'f' ] ; then
+			show_key_info "$keyid" | log info
+                    fi
+
+		fi
+		;;
+	esac
+    done || returnCode="$?"
+
+    # if no key match was made (and the "while read" subshell
+    # returned 1) output how many keys were found
+    if (( returnCode != 1 )) ; then
+
+	echo | log info
+
+	# output different footer messages depending on if a key had
+	# been retrieved from the host
+	if [ "$sshKeyOffered" ] ; then
 	    log info <<EOF
 None of the found keys matched the key offered by the host.
-Run the following command for more info about the found keys:
-gpg --check-sigs --list-options show-uid-validity =${userID}
 EOF
-
-	    # FIXME: should we do anything extra here if the retrieved
-	    # host key is actually in the known_hosts file and the ssh
-	    # connection will succeed?  Should the user be warned?
-	    # prompted?
+	else
+	    log info <<EOF
+There may be other keys with less than marginal validity for this hostname.
+EOF
 	fi
 
-    # if host key could not be retrieved from the host, output message
-    else
 	log info <<EOF
-Could not retrieve RSA host key from $HOST.
+Run the following command for more info about the found keys:
+gpg --check-sigs --list-options show-uid-validity =${userID}
 EOF
+
+	# FIXME: should we do anything extra here if the retrieved
+	# host key is actually in the known_hosts file and the ssh
+	# connection will succeed?  Should the user be warned?
+	# prompted?
     fi
 
     # output footer
diff --git a/src/share/ma/add_certifier b/src/share/ma/add_certifier
index 402da08..1601997 100644
--- a/src/share/ma/add_certifier
+++ b/src/share/ma/add_certifier
@@ -136,8 +136,8 @@ EOF
     gpg_sphere "--fingerprint 0x${fingerprint}!"
 
     if [ "$PROMPT" = "true" ] ; then
-	echo "Are you sure you want to add the above key as a certifier"
-	read -p "of users on this system? (Y/n) " OK; OK=${OK:-Y}
+	printf "Are you sure you want to add the above key as a certifier\nof users on this system? (Y/n) " >&2
+	read OK; OK=${OK:-Y}
 	if [ "${OK/y/Y}" != 'Y' ] ; then
 	    failure "Identity certifier not added."
 	fi
diff --git a/src/share/ma/remove_certifier b/src/share/ma/remove_certifier
index 6c90358..79f1cda 100644
--- a/src/share/ma/remove_certifier
+++ b/src/share/ma/remove_certifier
@@ -27,7 +27,8 @@ fi
 gpg_core --list-key --fingerprint "0x${keyID}!" || failure
 
 if [ "$PROMPT" = "true" ] ; then
-    read -p "Really remove the above listed identity certifier? (Y/n) " OK; OK=${OK:-Y}
+    printf "Really remove the above listed identity certifier? (Y/n) " >&2 
+    read OK; OK=${OK:-Y}
     if [ "${OK/y/Y}" != 'Y' ] ; then
 	failure "Identity certifier not removed."
     fi
diff --git a/src/share/ma/setup b/src/share/ma/setup
index 4c87009..0ed0406 100644
--- a/src/share/ma/setup
+++ b/src/share/ma/setup
@@ -16,10 +16,10 @@ setup() {
     log debug "checking authentication directory structure..."
     mkdir -p "${MADATADIR}"
     chmod 0750 "${MADATADIR}"
-    chgrp "$MONKEYSPHERE_USER" "${MADATADIR}"
+    chgrp "$MONKEYSPHERE_GROUP" "${MADATADIR}"
     mkdir -p "${MATMPDIR}"
     chmod 0750 "${MATMPDIR}"
-    chgrp "$MONKEYSPHERE_USER" "${MATMPDIR}"
+    chgrp "$MONKEYSPHERE_GROUP" "${MATMPDIR}"
     mkdir -p "${GNUPGHOME_CORE}"
     chmod 0700 "${GNUPGHOME_CORE}"
     mkdir -p "${GNUPGHOME_SPHERE}"
@@ -48,7 +48,7 @@ EOF
     # make sure the monkeysphere user owns everything in the sphere
     # gnupghome
     log debug "fixing sphere gnupg home ownership..."
-    chown "$MONKEYSPHERE_USER:$MONKEYSPHERE_USER" "${GNUPGHOME_SPHERE}" "${GNUPGHOME_SPHERE}"/gpg.conf
+    chown "$MONKEYSPHERE_USER:$MONKEYSPHERE_GROUP" "${GNUPGHOME_SPHERE}" "${GNUPGHOME_SPHERE}"/gpg.conf
 
     # get fingerprint of core key.  this should be empty on unconfigured systems.
     local CORE_FPR=$(core_fingerprint)
diff --git a/src/share/mh/add_hostname b/src/share/mh/add_hostname
index 36f174d..9465d96 100644
--- a/src/share/mh/add_hostname
+++ b/src/share/mh/add_hostname
@@ -32,9 +32,8 @@ find_host_userid > /dev/null && \
     failure "Host userID '$userID' already exists."
 
 if [ "$PROMPT" = "true" ] ; then
-    read -p "The following user ID will be added to the host key:
-  $userID
-Are you sure you would like to add this user ID? (Y/n) " OK; OK=${OK:=Y}
+    printf "The following user ID will be added to the host key:\n  %s\nAre you sure you would like to add this user ID? (Y/n) " "$userID" >&2
+    read OK; OK=${OK:=Y}
     if [ "${OK/y/Y}" != 'Y' ] ; then
 	failure "User ID not added."
     fi
diff --git a/src/share/mh/add_revoker b/src/share/mh/add_revoker
index 077b0d0..89e6fcf 100644
--- a/src/share/mh/add_revoker
+++ b/src/share/mh/add_revoker
@@ -64,7 +64,7 @@ else
     # fix permissions and ownership on temporary directory which will
     # be used by monkeysphere user for storing the downloaded key
     chmod 0700 "$tmpDir"
-    chown "$MONKEYSPHERE_USER":"$MONKEYSPHERE_USER" "$tmpDir"
+    chown "$MONKEYSPHERE_USER":"$MONKEYSPHERE_GROUP" "$tmpDir"
 
     # download the key from the keyserver as the monkeysphere user
     log verbose "searching keyserver $KEYSERVER for keyID $keyID..."
@@ -90,8 +90,8 @@ EOF
     su_monkeysphere_user "GNUPGHOME=$tmpDir gpg --fingerprint 0x${fingerprint}!"
 
     if [ "$PROMPT" = "true" ] ; then
-	read -p "Are you sure you want to add the above key as a revoker
-of the host key? (Y/n) " OK; OK=${OK:-Y}
+	printf "Are you sure you want to add the above key as a revoker\nof the host key? (Y/n) " >&2
+	read OK; OK=${OK:-Y}
 	if [ "${OK/y/Y}" != 'Y' ] ; then
 	    failure "revoker not added."
 	fi
diff --git a/src/share/mh/publish_key b/src/share/mh/publish_key
index b0ffd93..48e4cbb 100644
--- a/src/share/mh/publish_key
+++ b/src/share/mh/publish_key
@@ -18,7 +18,8 @@ publish_key() {
 local GNUPGHOME
 
 if [ "$PROMPT" = "true" ] ; then
-    read -p "Really publish host key to $KEYSERVER? (Y/n) " OK; OK=${OK:=Y}
+    printf "Really publish host key to $KEYSERVER? (Y/n) " >&2
+    read OK; OK=${OK:=Y}
     if [ "${OK/y/Y}" != 'Y' ] ; then
 	failure "key not published."
     fi
@@ -29,7 +30,7 @@ fi
 # create a temporary gnupg directory from which to publish the key
 export GNUPGHOME=$(msmktempdir)
 chmod 0700 "$GNUPGHOME"
-chown "$MONKEYSPHERE_USER":"$MONKEYSPHERE_USER" "$GNUPGHOME"
+chown "$MONKEYSPHERE_USER":"$MONKEYSPHERE_GROUP" "$GNUPGHOME"
 
 # trap to remove tmp dir if break
 trap "rm -rf $GNUPGHOME" EXIT
diff --git a/src/share/mh/revoke_hostname b/src/share/mh/revoke_hostname
index 5dc327f..44ba312 100644
--- a/src/share/mh/revoke_hostname
+++ b/src/share/mh/revoke_hostname
@@ -27,11 +27,12 @@ if [ -z "$1" ] ; then
     failure "You must specify a hostname to revoke."
 fi
 
-echo "WARNING: There is a known bug in this function."
-echo "This function has been known to occasionally revoke the wrong hostname."
-echo "Please see the following bug report for more information:"
-echo "https://labs.riseup.net/code/issues/show/422"
-read -p "Are you sure you would like to proceed? (y/N) " OK; OK=${OK:=N}
+echo "WARNING: There is a known bug in this function.
+This function has been known to occasionally revoke the wrong hostname.
+Please see the following bug report for more information:
+https://labs.riseup.net/code/issues/show/422" >&2
+printf "Are you sure you would like to proceed? (y/N) " >&2
+read OK; OK=${OK:=N}
 if [ ${OK/y/Y} != 'Y' ] ; then
     failure "aborting."
 fi
@@ -43,9 +44,8 @@ uidIndex=$(find_host_userid) || \
     failure "No non-revoked user ID found matching '$userID'."
 
 if [ "$PROMPT" = "true" ] ; then
-    read -p "The following host key user ID will be revoked:
-  $userID
-Are you sure you would like to revoke this user ID? (Y/n) " OK; OK=${OK:=Y}
+    printf "The following host key user ID will be revoked:\n  %s\nAre you sure you would like to revoke this user ID? (Y/n) " "$userID" >&2
+    read OK; OK=${OK:=Y}
     if [ "${OK/y/Y}" != 'Y' ] ; then
 	failure "User ID not revoked."
     fi
diff --git a/src/share/mh/revoke_key b/src/share/mh/revoke_key
index ad68d5f..5460e51 100644
--- a/src/share/mh/revoke_key
+++ b/src/share/mh/revoke_key
@@ -33,7 +33,8 @@ Publishing this certificate will IMMEDIATELY and PERMANENTLY revoke
 your host key!
 
 EOF
-	read -p "Publish the certificate after generation? (y/n/Q) " publish
+	printf "Publish the certificate after generation? (y/n/Q) " >&2
+	read publish
 	
 	if ! [ "${publish/y/Y}" = 'Y' -o "${publish/n/N}" = 'N' ] ; then
 	    failure "aborting at user request"
@@ -87,7 +88,8 @@ y
 
     if [ "${publish/y/Y}" = 'Y' ] ; then
 	printf "\n" >&2
-	read -p "Really publish this cert to $KEYSERVER ? (Y/n) " really
+	printf "Really publish this cert to $KEYSERVER ? (Y/n) " >&2
+	read really
 	if [ "${really/n/N}" = 'N' ] ; then
 	    printf "Not publishing.\n" >&2
 	else
diff --git a/src/share/mh/set_expire b/src/share/mh/set_expire
index a6bf1f1..9889e76 100644
--- a/src/share/mh/set_expire
+++ b/src/share/mh/set_expire
@@ -22,7 +22,8 @@ local extendTo
 extendTo=$(get_gpg_expiration "$1")
 
 if [ "$PROMPT" = "true" ] ; then
-    read -p "Are you sure you want to change the expiration on the host key to '$extendTo'? (Y/n) " OK; OK=${OK:-Y}
+    printf "Are you sure you want to change the expiration on the host key to '%s'? (Y/n) " "$extendTo" >&2
+    read OK; OK=${OK:-Y}
     if [ "${OK/y/Y}" != 'Y' ] ; then
 	failure "expiration not set."
     fi