commit a541c4f4710d4e11847d082a623e11ab8fca6c31
parent 27c94c92d5fdf7294ee1905c381d0ce2f4ccebca
Author: Christoph Lohmann <20h@r-36.net>
Date: Sun, 3 Apr 2022 12:22:57 +0200
Add UMN .Links etc. directory parsing example.
Reduce dirlisting.dcgi to bare example.
Diffstat:
2 files changed, 182 insertions(+), 21 deletions(-)
diff --git a/cgi-examples/dirlisting.dcgi b/cgi-examples/dirlisting.dcgi
@@ -2,11 +2,6 @@
#
# Dir listing example.
#
-# Entry definition in .Links, .cap/$file or .names:
-# Name=, Type=, Path=, Host=, Port=, Numb=, Abstract=, Admin=, URL=, TTL=
-#
-
-[ -f .abstract ] && cat .abstract | sed 's/^t/&&/'
find . -maxdepth 1 \
| sort -r \
@@ -14,26 +9,11 @@ find . -maxdepth 1 \
| grep -v "^\." \
| while read -r entry;
do
- [ "${entry}" == ".cap" ] && continue
- [ "${entry}" == ".Links" ] && continue
- [ "${entry}" == ".names" ] && continue
-
entrytype="9"
[ -d "${entry}" ] && entrytype="1"
- entryserver="server"
- entryport="port"
- entryname="%f"
- if [ -f ".cap/$entry" ];
- then
- entryname="$(cat ".cap/$entry" \
- | grep "^Name=" \
- | cut -d'=' -f 2-)"
- fi
- [ -z "${entryname}" ] && entryname="%f"
-
find "${entry}" \
-maxdepth 0 \
- -printf "[${entrytype}|%TY-%Tm-%Td ${entryname}|%f|${entryserver}|${entryport}]\r\n"
+ -printf "[${entrytype}|%TY-%Tm-%Td %f|%f|server|port]\r\n"
done
diff --git a/cgi-examples/umnlisting.dcgi b/cgi-examples/umnlisting.dcgi
@@ -0,0 +1,181 @@
+#!/usr/bin/env python
+# coding=utf-8
+#
+# Dir listing like in UMN gopher.
+#
+# Files: .abstract, .names, .cap/$file, .Links
+# Entries: Name=, Type=, Path=, Host=, Port=, Abstract=, Admin=, URL=,
+# TTL=
+#
+
+import os
+import sys
+
+def dcgifilterprint(lines):
+ for line in lines:
+ line = line.strip()
+ if line[0] == 't':
+ print("t%s" % (line))
+ else:
+ print("%s" % (line))
+
+def parselinksfile(filepath, link={}):
+ fd = open(filepath, "r")
+ links = {}
+ while 1:
+ line = fd.readline()
+ if not line:
+ if "path" in link:
+ links[link["path"]] = link
+ link = {}
+ break
+ line = line.strip()
+ if len(line) == 0 or line.startswith("#"):
+ if "path" in link:
+ links[link["path"]] = link
+ link = {}
+ continue
+ elif line.startswith("Type="):
+ link["type"] = line.split("=", 1)[1]
+ elif line.startswith("Name="):
+ link["name"] = line.split("=", 1)[1]
+ elif line.startswith("Path="):
+ link["path"] = line.split("=", 1)[1]
+ elif line.startswith("Host="):
+ link["host"] = line.split("=", 1)[1]
+ elif line.startswith("Port="):
+ link["port"] = line.split("=", 1)[1]
+ elif line.startswith("Numb="):
+ try:
+ link["number"] = int(line.split("=", 1)[1])
+ except ValueError:
+ pass
+ elif line.startswith("Abstract="):
+ link["abstract"] = line.split("=", 1)[1]
+ while link["abstract"][-1] == "\\":
+ link["abstract"] = link["abstract"][:-1]
+ link["abstract"] += "\n"
+ link["abstract"] += fd.readline().strip()
+
+ # Undefined case in UMN. Handle it nicely.
+ if link["abstract"][-1] == "\\":
+ link["abstract"][-1] = "\n"
+ elif line.startswith("Admin="):
+ link["admin"] = line.split("=", 1)[1]
+ elif line.startswith("URL="):
+ link["url"] = line.split("=", 1)[1]
+ elif line.startswith("TTL="):
+ link["ttl"] = line.split("=", 1)[1]
+ fd.close()
+
+ return links
+
+def usage(app):
+ print("usage: %s search arguments host port" % (app),
+ file=sys.stderr)
+ sys.exit(1)
+
+def main(args):
+ scriptname = os.path.basename(args[0])
+ if len(args) < 5:
+ usage(scriptname)
+ search = args[1]
+ arguments = args[2]
+ host = args[3]
+ port = args[4]
+
+ basedir = "."
+ if len(arguments) > 0 and arguments[0] == "/":
+ basedir = arguments[0].split("?")[0]
+
+ # First print every .abstract file content.
+ abstractpath = "%s/.abstract" % (basedir)
+ if os.path.exists(abstractpath):
+ fd = open(abstractpath, "r")
+ dcgifilterprint(fd.readlines())
+ fd.close()
+
+ outputlinks = {}
+
+ linkspath = "%s/.Links" % (basedir)
+ if os.path.exists(linkspath):
+ linkslinks = parselinksfile(linkspath)
+ for linkkey in linkslinks.keys():
+ outputlinks[linkkey] = linkslinks[linkkey]
+
+ entries = os.listdir(basedir)
+ for entry in entries:
+ entrylink = {}
+ entrylink["type"] = "9"
+ if os.path.isdir(entry):
+ entrylink["type"] = "1"
+
+ entrylink["path"] = "./%s" % (entry)
+ entrylink["name"] = entry
+ capspath = "%s/.cap/%s" % (basedir, entry)
+ if os.path.exists(capspath):
+ caplink = parselinksfile(capspath, entrylink)
+ outputlinks[entrylink["path"]] = entrylink
+
+ namespath = "%s/.names" % (basedir)
+ if os.path.exists(namespath):
+ nameslinks = parselinksfile(namespath)
+ for namekey in nameslinks.keys():
+ namelink = nameslinks[namekey]
+ if namekey in outputlinks.keys():
+ for key in namelink:
+ outputlinks[namekey][key] = \
+ namelink[key]
+ else:
+ outputlinks[namekey] = nameslinks[namekey]
+ displaylinks = {}
+ for link in outputlinks.keys():
+ if "name" in outputlinks[link]:
+ displaylinks[outputlinks[link]["name"]] = link
+ elif "path" in outputlinks[link]:
+ if outputlinks[link]["path"].startswith("./"):
+ displaylinks[outputlinks[link]["path"][2:]] = \
+ link
+ else:
+ displaylinks[outputlinks[link]["path"]] = \
+ link
+ else:
+ displaylinks[link] = link
+
+ displaykeys = sorted(displaylinks)
+ for key in displaykeys:
+ path = displaylinks[key]
+ if path == "./.Links" or \
+ path == "./.cap" or \
+ path == "./.names" or \
+ path == "./.abstract":
+ continue
+
+ link = outputlinks[path]
+ if "port" not in link:
+ link["port"] = "port"
+ if "host" not in link:
+ link["host"] = "server"
+ if "name" not in link:
+ if link["path"].startswith("./"):
+ link["name"] = link["path"][2:]
+ else:
+ link["name"] = link["path"]
+ if "type" not in link:
+ link["type"] = "9"
+
+ # dcgi escaping.
+ link["name"].replace("|", "\\|")
+
+ print("[%s|%s|%s|%s|%s]" % (link["type"][0],\
+ link["name"], link["path"], link["host"],\
+ link["port"]))
+
+ if "abstract" in link:
+ dcgifilterprint(link["abstract"].split("\n"))
+
+ return 0
+
+if __name__ == "__main__":
+ sys.exit(main(sys.argv))
+
