blob: 93050676ccd3e9390fec56027385da71a7f3da0a (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
|
#!/bin/bash
# dillo-gemini
# © 2019 cel @f/6sQ6d2CMxRUhLpspgGIulDxDCwYD7DzFzPNr7u5AU=.ed25519
# Copying and distribution of this file, with or without modification,
# are permitted in any medium without royalty provided the copyright
# notice and this notice are preserved. This file is offered as-is,
# without any warranty.
read -d '>' auth
read -d '>' cmd
case "$cmd" in
"<cmd='open_url' url='"*);;
*) echo $cmd; exit;;
esac
url=${cmd#"<cmd='open_url' url='"}
url=${url%"' '"}
serve_404() {
printf "<cmd='start_send_page' url='' '>\n"
printf "Content-type: text/plain\r\n\r\n"
echo Not found
}
render_gemini() {
printf "Content-type: text/html\r\n\r\n<!doctype html><pre>"
sed 's/^\(=>\s*\)\(\S*\)*\(.*\)/\1<a href="\2">\2<\/a>\3/'
printf "%s" "</pre>"
}
send_status_msg() {
printf "<cmd='send_status_message' msg='%s' '>" "$*"
}
serve_status_not_supported() {
printf "<cmd='start_send_page' url='' '>\n"
printf "Content-type: text/plain\r\n\r\n"
echo Status not implemented: $1
echo $2
}
serve_missing_status() {
printf "<cmd='start_send_page' url='' '>\n"
printf "Content-type: text/plain\r\n\r\n"
echo Empty status response. $2
}
serve_success() {
printf "<cmd='start_send_page' url='' '>\n"
type=$1
case "$type" in
text/gemini*) render_gemini;;
*) printf "Content-type: $type\r\n\r\n"; cat;;
esac
}
serve_redirect() {
url=$1
send_status_msg "Redirected"
printf "<cmd='start_send_page' url='' '>\n"
printf "Content-type: text/html\r\n\r\n"
# TODO: html-escape url
cat <<-EOF
<!doctype html>
<html>
<head>
<title>Redirect to $url</title>
</head>
<body>
<h3>Redirect to <a href="$url">$url</a></3>
</body>
</html>
EOF
}
serve_error() {
status=$1
meta=$2
send_status_msg "Request failed"
printf "<cmd='start_send_page' url='' '>\n"
printf "Content-type: text/html\r\n\r\n"
cat <<-EOF
<!doctype html>
<html>
<head>
<title>Request failed</title>
</head>
<body>
<h3>Request failed: $status</h3>
<code>$meta</code>
</body>
</html>
EOF
}
serve_fail() {
meta="$1"
send_status_msg "Client certificate required"
printf "<cmd='start_send_page' url='' '>\n"
printf "Content-type: text/html\r\n\r\n"
cat <<-EOF
<!doctype html>
<html>
<head>
<title>Client certificate required</title>
</head>
<body>
<h3>Client certificate required</h3>
<p>Not implemented!</p>
<code>$meta</code>
</body>
</html>
EOF
}
serve_gemini() {
url=$1
url1=${url#gemini://}
hostname=${url1%%/*}
host=${hostname%%:*}
port=${hostname##*:}
if [ "$host" = "$port" ]; then port=1965; fi
send_status_msg "Sending request..."
printf "%s\r\n" "$url" | ncat --no-shutdown --ssl "$host" "$port" | {
read status meta
send_status_msg "Status: $status"
meta=$(echo "$meta" | sed 's/\s*$//')
case "$status" in
1*) serve_input "$meta";;
2*) serve_success "$meta";;
3*) serve_redirect "$meta";;
4*) serve_error "$status" "$meta";;
5*) serve_error "$meta";;
6*) serve_client_cert_required "$meta";;
'') serve_missing_status "$meta";;
*) serve_status_not_supported "$status" "$meta";;
esac
}
}
case "$url" in
gemini:*) serve_gemini "$url";;
*) serve_404;;
esac
|
