-#!/bin/bash
-
-# Note: bash is required, sh will fail to output anything to the client
-# Probably related to interactions beteween & and output redirections
-
-# $0 [prog] ([port])
-# You can use the evironment variable $QUERY_STRING for the query
-
-[ "$ADDR" = "" ] && ADDR=127.0.0.1
-[ "$LOG" = "" ] && LOG=/tmp/gopher.service.err
-[ "$PIDF" = "" ] && PIDF="`mktemp`"
-[ "$TIMEOUT" = "" ] && TIMEOUT=10
-[ "$MAXCON" = "" ] && MAXCON=1024
-
-prog="$1"
-port="$2"
-[ "$port" = "" ] && port=70
-
-if [ "$prog" = "" ]; then
- rm "$PIDF"
- echo "Syntax: $0 [prog] ([port])" >&2
- echo ' You can use the evironment variable $QUERY_STRING for the query' >&2
- echo ' The default port is 70' >&2
- echo ' A filename will be displayed, you can delete it to stop the service' >&2
- echo ' (with a grace time of $TIMEOUT seconds)' >&2
- exit 1
+#!/bin/sh
+
+# $0 [server] ([selector]) ([port]) ([mode])
+# server: the gopher server to dig to
+# selector: the gopher selector (default is empty)
+# port: the port to use (default is 70)
+# mode: the filetype mode (default depends upon selector)
+# 0: plain text
+# 1: menu (dir-like)
+# ...
+# download: fake mode to download the result without changes
+
+# ENV variables:
+# LESS: will be used with 'less' (think: "export LESS=-r")
+# LINK_COLOR: escape sequences colour (def: 2)
+# - : means no escape sequence
+# 1 : means colour 1
+# 2 : means colour 2
+# [...]
+
+SERVER="$1"
+SELECTOR="$2"
+PORT="$3"
+MODE="$4"
+
+# Defaults:
+[ "$PORT" = "" ] && PORT=70
+if [ "$MODE" = "" ]; then
+ # "" or dir-like selector? -> 1 ; if not -> 0
+ echo "$SELECTOR" | grep "/$" >/dev/null && MODE=1 || MODE=0
+ [ "$SELECTOR" = "" ] && MODE=1
fi
-tmpd=`mktemp -t -d .gopher-service.XXXXXX`
-if [ ! -d "$tmpd" ]; then
- rm "$PIDF"
- echo "Cannot create temporary directory, aborting..." >&2
+if [ "$SERVER" = "" ]; then
+ echo "Syntax error: $0 [SERVER] ([SELECTOR]) ([PORT]) ([MODE])" >&2
exit 2
fi
-touch "$PIDF"
-echo "$PIDF"
-
-i=0
-while [ -e "$PIDF" ]; do
- i=`expr $i + 1`
- [ $i -gt "$MAXCON" ] && i=1
- fifo="$tmpd/fifo.$i"
- rm -f "$fifo" 2>/dev/null
- mkfifo "$fifo"
- < "$fifo" nc -l -q0 -w"$TIMEOUT" "$ADDR" -p "$port" | (
- read -r query
- query="`echo "$query" | cut -f2 -d' ' | sed 's:[\r\n]::g'`"
- QUERY_STRING="$query" "$prog" 2>> "$LOG" &
- ) > "$fifo"
-done
-rm -rf "$tmpd" 2>/dev/null
+# can be "-" for no escape sequences
+[ "$LINK_COLOR" = "" ] && LINK_COLOR=2
+
+# Start and end link tags
+SL=
+EL=
+if [ "$LINK_COLOR" != "-" ]; then
+ SL="`tput setf $LINK_COLOR``tput setaf $LINK_COLOR`"
+ EL="`tput init`";
+fi
+
+PREFIX="[0-9h]"
+
+# $0 [FILE]
+# Display a gopher menu for the given resource
+cat_menu() {
+ i=0
+ cat "$1" | grep "^i\|^$PREFIX" | while read ln; do
+ ln="`echo "$ln" | cut -f1`"
+ if echo "$ln" | grep "^i" >/dev/null 2>&1; then
+ echo "$ln" | sed "s:^.: :g"
+ elif echo "$ln" | grep "^$PREFIX" >/dev/null 2>&1; then
+ i=`expr $i + 1`
+ i=`printf %2.f $i`
+ field="`echo "$ln" | cut -c1`"
+ case "$field" in
+ 0) typ='TXT';;
+ 1) typ='DIR';; # menu, actually
+ 7) typ='(?)';; # query
+ 8) typ='TEL';; # TELnet (not TELephone)
+ h) typ='WEB';; # HTML
+ g) typ='GIF';;
+ I) typ='IMG';;
+ +) typ='SVR';; # redundant server
+ *) typ='!!!';;
+ esac
+ echo "$ln" | sed "s:^.\\(.*\\):$typ $i $SL\\1$EL:g"
+ #else
+ # Bad line
+ fi
+ done
+}
+
+# $0 [FILE] [INDEX] [FIELD]
+# Get a field from the given-by-index link in FILE
+#
+# Fields:
+# 1 = type/name
+# 2 = selector
+# 3 = server
+# 4 = port
+getsel() {
+ cat "$1" | grep "^$PREFIX" | tail -n+"$2" | head -n 1 | cut -f"$3"
+}
+
+# Save page content to 'tmp' file
+tmp="`mktemp -t gofetch.current_page.XXXXXX`"
+finish() {
+ rm -rf "$tmp" "$tmp.jpg"
+}
+trap finish EXIT
+
+if [ $MODE = 1 ]; then
+ echo "$SELECTOR" | nc "$SERVER" "$PORT" | sed 's:\r::g' > "$tmp"
+else
+ echo "$SELECTOR" | nc "$SERVER" "$PORT" > "$tmp"
+fi
+
+# Process page content
+case "$MODE" in
+download)
+ # Special, fake mode, only from top-level
+ cat "$tmp"
+;;
+0)
+ cat "$tmp" | less
+;;
+1)
+ CHOICE=start
+ while [ "$CHOICE" != "" ]; do
+ cat_menu "$tmp" | less
+ read -p "[$SELECTOR]: " CHOICE
+ index="`expr 1 \* "$CHOICE" 2>/dev/null`"
+ if [ "$index" != "" ]; then
+ goto_server="`getsel "$tmp" $index 3`"
+ goto_sel="`getsel "$tmp" $index 2`"
+ goto_port="`getsel "$tmp" $index 4`"
+ goto_mode="`getsel "$tmp" $index 1 | cut -c1`"
+ sh "$0" "$goto_server" "$goto_sel" "$goto_port" "$goto_mode"
+ fi
+ done
+;;
+7)
+ read -p "Query: " SEARCH
+ selQuery="$SELECTOR $SEARCH"
+
+ exec sh "$0" "$SERVER" "$selQuery" "$PORT" 1
+;;
+8)
+ telnet -l "$SELECTOR" "$SERVER" "$PORT"
+ read DUMMY
+;;
+9)
+ echo "<BINARY FILE>" | less
+;;
+g|I)
+ if convert -h >/dev/null 2>&1; then
+ if ImageUtils.sh --help >/dev/null 2>&1; then
+ ImageUtils.sh --mode=DITHERING \
+ --width=74 "$tmp" | less
+ elif jp2a -h >/dev/null 2>&1; then
+ convert "$tmp" "$tmp.jpg"
+ jp2a --border --chars=" .-+=o8#"\
+ --width=74 "$tmp.jpg" | less
+ else
+ echo "required program not found to view images:" \
+ jp2a or ImageUtils.sh | less
+ fi
+ else
+ echo "required program not found to view images: convert" \
+ | less
+ fi
+;;
+*)
+ echo "unknwon selector mode: <$MODE>" | less
+ exit 3
+;;
+esac
git://git.nikiroo.be / gofetch.git / blobdiff