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Ticket #4232: drop comatibility with native FISH protocol and FISH server.
Does anybody know any implementation of FISH server? Should we keep the compatibility with unimplemented server? Let's forget about the compatibility with FISH command formats. Let's just send shell scripts with arguments that are convenient for us to the remote host and get results of script work. The part of FISH protocol relative to remote host answers will be used as is. Signed-off-by: Andrew Borodin <aborodin@vmail.ru>
This commit is contained in:
Andrew Borodin
parent
3e44333776
commit
3f42309a5d
@ -3227,8 +3227,7 @@ The latter specifies the full path of the tar archive.
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.SH " FIle transfer over SHell filesystem"
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The fish file system is a network based file system that allows you to
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manipulate the files in a remote machine as if they were local. To use
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this, the other side has to either run fish server, or has to have
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bash\-compatible shell.
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this, the other side has to have bash\-compatible shell.
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.PP
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To connect to a remote machine, you just need to chdir
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into a special directory which name is in the following
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@ -3730,8 +3730,7 @@ tar\-файлов, то есть обычно для получения спис
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Файловая система fish \- это сетевая файловая система, которая позволяет
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работать с файлами на удалённом компьютере так, как если бы они были
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расположены на вашем диске. Для того чтобы это было возможно, на
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удалённом компьютере должен быть запущен fish\-сервер, или
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bash\-совместимая оболочка shell.
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удалённом компьютере должна быть запущена bash\-совместимая оболочка shell.
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.PP
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Для соединения с удалённым компьютером нужно выполнить команду
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перехода в каталог (chdir), имя которого задаётся в следующем формате:
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@ -385,7 +385,7 @@ fish_free_archive (struct vfs_class *me, struct vfs_s_super *super)
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if (fish_super->sockw != -1)
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{
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fish_command (me, super, NONE, "#BYE\nexit\n", -1);
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fish_command (me, super, NONE, "exit\n", -1);
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close (fish_super->sockw);
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fish_super->sockw = -1;
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}
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@ -630,19 +630,6 @@ fish_open_archive_int (struct vfs_class *me, struct vfs_s_super *super)
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ERRNOR (E_PROTO, -1);
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vfs_print_message ("%s", _("fish: Sending initial line..."));
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/*
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* Run 'start_fish_server'. If it doesn't exist - no problem,
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* we'll talk directly to the shell.
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*/
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if (fish_command
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(me, super, WAIT_REPLY, "#FISH\necho; start_fish_server 2>&1; echo '### 200'\n",
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-1) != COMPLETE)
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ERRNOR (E_PROTO, -1);
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vfs_print_message ("%s", _("fish: Handshaking version..."));
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if (fish_command (me, super, WAIT_REPLY, "#VER 0.0.3\necho '### 000'\n", -1) != COMPLETE)
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ERRNOR (E_PROTO, -1);
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/* Set up remote locale to C, otherwise dates cannot be recognized */
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if (fish_command
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@ -11,7 +11,6 @@
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/* default 'ls' script */
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#define FISH_LS_DEF_CONTENT "" \
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"#LIST /${FISH_FILENAME}\n" \
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"export LC_TIME=C\n" \
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"ls -Qlan \"/${FISH_FILENAME}\" 2>/dev/null | grep '^[^cbt]' | (\n" \
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"while read p l u g s m d y n; do\n" \
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@ -35,13 +34,11 @@
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/* default file exists script */
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#define FISH_EXISTS_DEF_CONTENT "" \
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"#ISEXISTS $FISH_FILENAME\n" \
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"ls -l \"/${FISH_FILENAME}\" >/dev/null 2>/dev/null\n" \
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"echo '### '$?\n"
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/* default 'mkdir' script */
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#define FISH_MKDIR_DEF_CONTENT "" \
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"#MKD $FISH_FILENAME\n" \
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"if mkdir \"/${FISH_FILENAME}\" 2>/dev/null; then\n" \
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" echo \"### 000\"\n" \
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"else\n" \
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@ -50,15 +47,14 @@
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/* default 'unlink' script */
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#define FISH_UNLINK_DEF_CONTENT "" \
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"#DELE $FISH_FILENAME\n" \
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"if rm -f \"/${FISH_FILENAME}\" 2>/dev/null; then\n" \
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" echo \"### 000\"\n" \
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"else\n" \
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" echo \"### 500\"\n" \
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"fi\n"
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/* default 'chown' script */
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#define FISH_CHOWN_DEF_CONTENT "" \
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"#CHOWN $FISH_FILEOWNER:$FISH_FILEGROUP $FISH_FILENAME\n" \
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"if chown ${FISH_FILEOWNER}:${FISH_FILEGROUP} \"/${FISH_FILENAME}\"; then\n"\
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" echo \"### 000\"\n" \
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"else\n" \
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@ -67,7 +63,6 @@
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/* default 'chmod' script */
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#define FISH_CHMOD_DEF_CONTENT "" \
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"#CHMOD $FISH_FILEMODE $FISH_FILENAME\n" \
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"if chmod ${FISH_FILEMODE} \"/${FISH_FILENAME}\" 2>/dev/null; then\n" \
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" echo \"### 000\"\n" \
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"else\n" \
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@ -93,7 +88,6 @@
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/* default 'rmdir' script */
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#define FISH_RMDIR_DEF_CONTENT "" \
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"#RMD $FISH_FILENAME\n" \
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"if rmdir \"/${FISH_FILENAME}\" 2>/dev/null; then\n" \
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" echo \"### 000\"\n" \
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"else\n" \
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@ -102,7 +96,6 @@
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/* default 'ln -s' symlink script */
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#define FISH_LN_DEF_CONTENT "" \
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"#SYMLINK $FISH_FILEFROM $FISH_FILETO\n" \
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"if ln -s \"/${FISH_FILEFROM}\" \"/${FISH_FILETO}\" 2>/dev/null; then\n" \
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" echo \"### 000\"\n" \
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"else\n" \
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@ -111,7 +104,6 @@
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/* default 'mv' script */
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#define FISH_MV_DEF_CONTENT "" \
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"#RENAME $FISH_FILEFROM $FISH_FILETO\n" \
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"if mv \"/${FISH_FILEFROM}\" \"/${FISH_FILETO}\" 2>/dev/null; then\n" \
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" echo \"### 000\"\n" \
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"else\n" \
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@ -120,7 +112,6 @@
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/* default 'ln' hardlink script */
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#define FISH_HARDLINK_DEF_CONTENT "" \
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"#LINK $FISH_FILEFROM $FISH_FILETO\n" \
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"if ln \"/${FISH_FILEFROM}\" \"/${FISH_FILETO}\" 2>/dev/null; then\n" \
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" echo \"### 000\"\n" \
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"else\n" \
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@ -130,7 +121,6 @@
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/* default 'retr' script */
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#define FISH_GET_DEF_CONTENT "" \
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"export LC_TIME=C\n" \
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"#RETR $FISH_FILENAME\n" \
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"if dd if=\"/${FISH_FILENAME}\" of=/dev/null bs=1 count=1 2>/dev/null ; then\n" \
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" ls -ln \"/${FISH_FILENAME}\" 2>/dev/null | (\n" \
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" read p l u g s r\n" \
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@ -147,7 +137,6 @@
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#define FISH_SEND_DEF_CONTENT "" \
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"FILENAME=\"/${FISH_FILENAME}\"\n" \
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"FILESIZE=${FISH_FILESIZE}\n" \
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"#STOR $FILESIZE $FILENAME\n" \
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"echo \"### 001\"\n" \
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"{\n" \
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" while [ $FILESIZE -gt 0 ]; do\n" \
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@ -161,7 +150,6 @@
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#define FISH_APPEND_DEF_CONTENT "" \
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"FILENAME=\"/${FISH_FILENAME}\"\n" \
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"FILESIZE=${FISH_FILESIZE}\n" \
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"#APPE $FILESIZE $FILENAME\n" \
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"echo \"### 001\"\n" \
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"res=`exec 3>&1\n" \
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"(\n" \
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@ -1,32 +1,21 @@
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FIles transferred over SHell protocol (V 0.0.3)
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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FIles transferred over SSH
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~~~~~~~~~~~~~~~~~~~~~~~~~~
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This protocol was designed for transferring files over a remote shell
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connection (rsh and compatibles). It can be as well used for transfers over
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connection (rsh and compatibles). It can be as well used for transfers over
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rsh, and there may be other uses.
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Client sends requests of following form:
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Since version 4.8.31 Midnight Commander doesn't support FISH commands with form
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#FISH_COMMAND
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equivalent shell commands,
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which may be multiline
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#FISH_COMMAND [arg1] [arg2] ... [argN]
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Only fish commands are defined here, shell equivalents are for your
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information only and will probably vary from implementation to
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implementation. Fish commands always have priority: server is
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expected to execute fish command if it understands it. If it does not,
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however, it can try the luck and execute shell command.
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and sends requests as shell scripts only.
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Since version 4.7.3, the scripts that FISH sends to host machines after
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a command is transmitted are no longer hardwired in the Midnight
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Commander source code.
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First, mc looks for system-wide set of scripts, then it checks whether
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current user has host-specific overrides in his per-user mc
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configuration directory. User-defined overrides take priority over
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sytem-wide scripts if they exist. The order in which the directories are
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traversed is as follows:
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First, MC looks for system-wide set of scripts, then it checks whether
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current user has host-specific overrides in his per-user MC configuration
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directory. User-defined overrides take priority over sytem-wide scripts
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if they exist. The order in which the directories are traversed is as follows:
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/usr/libexec/mc/fish
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~/.local/share/mc/fish/<hostname>/
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@ -46,54 +35,37 @@ success, if they were, it marks failure.
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001 don't know; if there were no previous lines, this marks
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PRELIMinary success, if they were, it marks failure
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Connecting
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~~~~~~~~~~
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Client uses "echo FISH:;/bin/sh" as command executed on remote
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machine. This should make it possible for server to distinguish FISH
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connections from normal rsh/ssh.
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Connecting
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~~~~~~~~~~
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MC uses "echo FISH:;/bin/sh" as command executed on remote machine.
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Commands
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~~~~~~~~
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#FISH
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echo; start_fish_server; echo '### 200'
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Actions
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~~~~~~~
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This command is sent at the beginning. It marks that client wishes to
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talk via FISH protocol. #VER command must follow. If server
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understands FISH protocol, it has option to put FISH server somewhere
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on system path and name it start_fish_server.
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Get info about host into $result
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#VER 0.0.2 <feature1> <feature2> <...>
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echo '### 000'
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echo $result
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echo '### 200'
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This command is the second one. It sends client version and extensions
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to the server. Server should reply with protocol version to be used,
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and list of extensions accepted.
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Script: info
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VER 0.0.0 <feature2>
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### 200
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--------------------------------------------------------------------------------
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#PWD
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pwd; echo '### 200'
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List directory or get status information about single file.
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Server should reply with current directory (in form /abc/def/ghi)
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followed by line indicating success.
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ls -lLa $1 | grep '^[^cbt]' | ( while read p x u g s m d y n; do echo "P$p $u.$g
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S$s
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d$m $d $y
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:$n
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"; done )
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ls -lLa $1 | grep '^[cb]' | ( while read p x u g a i m d y n; do echo "P$p $u.$g
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E$a$i
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dD$m $d $y
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:$n
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"; done )
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echo '### 200'
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#LIST /directory
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ls -lLa $1 | grep '^[^cbt]' | ( while read p x u g s m d y n; do echo "P$p $u.$g
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S$s
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d$m $d $y
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:$n
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"; done )
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ls -lLa $1 | grep '^[cb]' | ( while read p x u g a i m d y n; do echo "P$p $u.$g
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E$a$i
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dD$m $d $y
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:$n
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"; done )
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echo '### 200'
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This allows client to list directory or get status information about
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single file. Output is in following form (any line except :<filename>
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may be omitted):
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Output is in following form (any line except :<filename> may be omitted):
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P<unix permissions> <owner>.<group>
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S<size>
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@ -104,94 +76,131 @@ E<major-of-device>,<minor>
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L<filename symlink points to>
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<blank line to separate items>
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Unix permissions are of form X--------- where X is type of
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file. Currently, '-' means regular file, 'd' means directory, 'c', 'b'
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means character and block device, 'l' means symbolic link, 'p' means
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FIFO and 's' means socket.
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Unix permissions are of form X---------
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where X is type of file:
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'-' a regular file
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'd' a directory
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'c' a character device
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'b' a block device
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'l' a symbolic link
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'p' a FIFO
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's' a socket.
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'd' has three fields: month (one of strings Jan Feb Mar Apr May Jun
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Jul Aug Sep Oct Nov Dec), day of month, and third is either single
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number indicating year, or HH:MM field (assume current year in such
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case). As you've probably noticed, this is pretty broken; it is for
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compatibility with ls listing.
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'd' has three fields:
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month (one of strings Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec)
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day of month
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single number indicating year, or HH:MM field (assume current year in such
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case). As you've probably noticed, this is pretty broken; it is for
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compatibility with ls listing.
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#RETR /some/name
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ls -l /some/name | ( read a b c d x e; echo $x ); echo '### 100'; cat /some/name; echo '### 200'
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Script: ls
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--------------------------------------------------------------------------------
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Get file
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ls -l /some/name | ( read a b c d x e; echo $x ); echo '### 100'; cat /some/name; echo '### 200'
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Server sends line with filesize on it, followed by line with ### 100
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indicating partial success, then it sends binary data (exactly
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filesize bytes) and follows them with (with no preceding newline) ###
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200.
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indicating partial success, then it sends binary data (exactly filesize bytes)
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and follows them with (with no preceding newline) ### 200.
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Note that there's no way to abort running RETR command - except
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closing the connection.
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Note that there's no way to abort running RETR command - except closing
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the connection.
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#STOR <size> /file/name
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> /file/name; echo '### 001'; ( dd bs=4096 count=<size/4096>; dd bs=<size%4096> count=1 ) 2>/dev/null | ( cat > %s; cat > /dev/null ); echo '### 200'
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Script: get
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This command is for storing /file/name, which is exactly size bytes
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big. You probably think I went crazy. Well, I did not: that strange
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cat > /dev/null has purpose to discard any extra data which was not
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written to disk (due to for example out of space condition).
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--------------------------------------------------------------------------------
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Put file
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> /file/name; echo '### 001'; ( dd bs=4096 count=<size/4096>; dd bs=<size%4096> count=1 ) 2>/dev/null | ( cat > %s; cat > /dev/null ); echo '### 200'
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This command is for storing /file/name, which is exactly size bytes big.
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You probably think I went crazy. Well, I did not: that strange cat > /dev/null
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has purpose to discard any extra data which was not written to disk (due to for
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example out of space condition).
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[Why? Imagine uploading file with "rm -rf /" line in it.]
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#CWD /somewhere
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cd /somewhere; echo '### 000'
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Script: send
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It is specified here, but I'm not sure how wise idea is to use this
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one: it breaks stateless-ness of the protocol.
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--------------------------------------------------------------------------------
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Following commands should be rather self-explanatory:
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Change directory
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#CHMOD 1234 file
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chmod 1234 file; echo '### 000'
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cd /somewhere; echo '### 000'
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#DELE /some/path
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rm -f /some/path; echo '### 000'
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It is specified here, but I'm not sure how wise idea is to use this one:
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it breaks stateless-ness of the protocol.
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#MKD /some/path
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mkdir /some/path; echo '### 000'
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--------------------------------------------------------------------------------
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#RMD /some/path
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rmdir /some/path; echo '### 000'
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Change mode
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#RENAME /path/a /path/b
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mv /path/a /path/b; echo '### 000'
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chmod 1234 file; echo '### 000'
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#LINK /path/a /path/b
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ln /path/a /path/b; echo '### 000'
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Script: chmod
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#SYMLINK /path/a /path/b
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ln -s /path/a /path/b; echo '### 000'
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--------------------------------------------------------------------------------
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#CHOWN user /file/name
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chown user /file/name; echo '### 000'
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Change own
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#CHGRP group /file/name
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chgrp group /file/name; echo '### 000'
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chown user /file/name; echo '### 000'
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#INFO
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...collect info about host into $result ...
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echo $result
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echo '### 200'
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Script: chown
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#READ <offset> <size> /path/and/filename
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cat /path/and/filename | ( dd bs=4096 count=<offset/4096> > /dev/null;
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dd bs=<offset%4096> count=1 > /dev/null;
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dd bs=4096 count=<offset/4096>;
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dd bs=<offset%4096> count=1; )
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--------------------------------------------------------------------------------
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Returns ### 200 on successful exit, ### 291 on successful exit when
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reading ended at eof, ### 292 on successful exit when reading did not
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end at eof.
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Remove file
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#WRITE <offset> <size> /path/and/filename
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rm -f /some/path; echo '### 000'
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Hmm, shall we define these ones if we know our client is not going to
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use them?
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||||
Sctipt: unlink
|
||||
|
||||
you can use follow parameters:
|
||||
--------------------------------------------------------------------------------
|
||||
|
||||
Make directory:
|
||||
|
||||
mkdir /some/path; echo '### 000'
|
||||
|
||||
Script: mkdir
|
||||
|
||||
--------------------------------------------------------------------------------
|
||||
|
||||
Remove directory
|
||||
|
||||
rmdir /some/path; echo '### 000'
|
||||
|
||||
Script: rmdir
|
||||
|
||||
--------------------------------------------------------------------------------
|
||||
|
||||
Rename/move file
|
||||
|
||||
mv /path/a /path/b; echo '### 000'
|
||||
|
||||
Script: mv
|
||||
|
||||
--------------------------------------------------------------------------------
|
||||
|
||||
Make link
|
||||
|
||||
ln /path/a /path/b; echo '### 000'
|
||||
|
||||
Script: hardlink
|
||||
|
||||
--------------------------------------------------------------------------------
|
||||
|
||||
Make symbolic link:
|
||||
|
||||
ln -s /path/a /path/b; echo '### 000'
|
||||
|
||||
Script: ln
|
||||
|
||||
--------------------------------------------------------------------------------
|
||||
|
||||
You can use following parameters:
|
||||
FISH_FILESIZE
|
||||
FISH_FILENAME
|
||||
FISH_FILEMODE
|
||||
@ -201,11 +210,11 @@ FISH_FILEFROM
|
||||
FISH_FILETO
|
||||
|
||||
NB:
|
||||
'FISH_FILESIZE' used if we operate with single file name in 'unlink', 'rmdir', 'chmod', etc...
|
||||
'FISH_FILEFROM','FISH_FILETO' used if we operate with two files in 'ln', 'hardlink', 'mv' etc...
|
||||
'FISH_FILEOWNER', 'FISH_FILEGROUPE' is a new user/group in chown
|
||||
'FISH_FILESIZE' is used if we operate with single file name in 'unlink', 'rmdir', 'chmod', etc...
|
||||
'FISH_FILEFROM','FISH_FILETO' are used if we operate with two files in 'ln', 'hardlink', 'mv' etc...
|
||||
'FISH_FILEOWNER', 'FISH_FILEGROUPE' are a new user/group in chown
|
||||
|
||||
also flags:
|
||||
and flags:
|
||||
FISH_HAVE_HEAD
|
||||
FISH_HAVE_SED
|
||||
FISH_HAVE_AWK
|
||||
@ -214,4 +223,5 @@ FISH_HAVE_LSQ
|
||||
FISH_HAVE_DATE_MDYT
|
||||
|
||||
That's all, folks!
|
||||
pavel@ucw.cz
|
||||
pavel@ucw.cz
|
||||
aborodin@vmail.ru
|
||||
|
||||
@ -1,4 +1,3 @@
|
||||
#APPE $FISH_FILESIZE $FISH_FILENAME
|
||||
FILENAME="/${FISH_FILENAME}"
|
||||
echo "### 001"
|
||||
{
|
||||
|
||||
@ -1,4 +1,3 @@
|
||||
#CHMOD $FISH_FILEMODE $FISH_FILENAME
|
||||
if chmod ${FISH_FILEMODE} "/${FISH_FILENAME}" 2>/dev/null; then
|
||||
echo "### 000"
|
||||
else
|
||||
|
||||
@ -1,4 +1,3 @@
|
||||
#CHOWN $FISH_FILEOWNER:$FISH_FILEGROUP $FISH_FILENAME
|
||||
if chown ${FISH_FILEOWNER}:${FISH_FILEGROUP} "/${FISH_FILENAME}" ; then
|
||||
echo "### 000"
|
||||
else
|
||||
|
||||
@ -1,3 +1,2 @@
|
||||
#ISEXISTS $FISH_FILENAME
|
||||
ls -l "/${FISH_FILENAME}" >/dev/null 2>/dev/null
|
||||
echo '### '$?
|
||||
|
||||
@ -1,4 +1,3 @@
|
||||
#RETR $FISH_FILENAME $FISH_START_OFFSET
|
||||
LC_TIME=C
|
||||
export LC_TIME
|
||||
fish_get_perl ()
|
||||
|
||||
@ -1,4 +1,3 @@
|
||||
#LINK $FISH_FILEFROM $FISH_FILETO
|
||||
FILEFROM="/${FISH_FILEFROM}"
|
||||
FILETO="/${FISH_FILETO}"
|
||||
if ln "${FILEFROM}" "${FILETO}" 2>/dev/null; then
|
||||
|
||||
@ -1,4 +1,3 @@
|
||||
#SYMLINK $FISH_FILEFROM $FISH_FILETO
|
||||
FILEFROM="${FISH_FILEFROM}"
|
||||
FILETO="/${FISH_FILETO}"
|
||||
if ln -s "${FILEFROM}" "${FILETO}" 2>/dev/null; then
|
||||
|
||||
@ -1,4 +1,3 @@
|
||||
#LIST /${FISH_DIR}
|
||||
LC_TIME=C
|
||||
export LC_TIME
|
||||
perl_res="1"
|
||||
|
||||
@ -1,4 +1,3 @@
|
||||
#MKD $FISH_FILENAME
|
||||
if mkdir "/$FISH_FILENAME" 2>/dev/null; then
|
||||
echo "### 000"
|
||||
else
|
||||
|
||||
@ -1,4 +1,3 @@
|
||||
#RENAME $FISH_FILEFROM $FISH_FILETO
|
||||
if mv "/${FISH_FILEFROM}" "/${FISH_FILETO}" 2>/dev/null; then
|
||||
echo "### 000"
|
||||
else
|
||||
|
||||
@ -1,4 +1,3 @@
|
||||
#RMD $FISH_FILENAME
|
||||
if rmdir "/${FISH_FILENAME}" 2>/dev/null; then
|
||||
echo "### 000"
|
||||
else
|
||||
|
||||
@ -1,4 +1,3 @@
|
||||
#STOR $FISH_FILESIZE $FISH_FILENAME
|
||||
FILENAME="/${FISH_FILENAME}"
|
||||
echo "### 001"
|
||||
{
|
||||
|
||||
@ -1,4 +1,3 @@
|
||||
#DELE $FISH_FILENAME
|
||||
if rm -f "/${FISH_FILENAME}" 2>/dev/null; then
|
||||
echo "### 000"
|
||||
else
|
||||
|
||||
@ -1,4 +1,3 @@
|
||||
#UTIME "$FISH_TOUCHATIME_W_NSEC" "$FISH_TOUCHMTIME_W_NSEC" "$FISH_FILENAME"
|
||||
if TZ=UTC touch -h -m -d "$FISH_TOUCHMTIME_W_NSEC" "/${FISH_FILENAME}" 2>/dev/null && \
|
||||
TZ=UTC touch -h -a -d "$FISH_TOUCHATIME_W_NSEC" "/${FISH_FILENAME}" 2>/dev/null; then
|
||||
echo "### 000"
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user