Initial env.cgi

1 files changed, 65 insertions, 0 deletions

diff --git a/cgi-bin/env.cgi b/cgi-bin/env.cgi
new file mode 100755
index 0000000..ffd6785
--- /dev/null
+++ b/cgi-bin/env.cgi
@@ -0,0 +1,65 @@
+#!/usr/bin/python3
+
+import cgi
+import cgitb
+import os
+import sys
+import io
+
+cgitb.enable()
+
+print("Content-Type: text/plain")
+print("")
+
+permitted_env = set([
+    "DOCUMENT_ROOT",
+    "QUERY_STRING",
+    "GATEWAY_INTERFACE",
+])
+
+permitted_prefix = [
+    "HTTP",
+    "REQUEST_",
+    "SERVER_",
+    "REMOTE_",
+    "SCRIPT_",
+    "PATH_",
+    "AUTH_",
+    "CONTENT_",
+]
+
+for k in sorted(os.environ.keys()):
+    if k in permitted_env or any((k.startswith(p) for p in permitted_prefix)):
+        print("ENV:{}:{}".format(k, os.environ[k]))
+
+if "QUERY_STRING" in os.environ:
+    qs = cgi.parse_qs(os.getenv("QUERY_STRING"))
+    for k, vs in qs.items():
+        for i, v in enumerate(vs):
+            if len(vs) > 1:
+                idx = "[{}]".format(i)
+            else:
+                idx = ""
+            print("QS:{}{}:{}".format(k, idx, v))
+
+stdin_content = sys.stdin.buffer.read()
+
+print("STDIN:START")
+sys.stdout.flush()
+sys.stdout.buffer.write(stdin_content)
+print("STDIN:END")
+
+valid_post_types = [
+    "application/x-www-form-urlencoded",
+    "multipart/form-data",
+]
+
+if os.environ.get("CONTENT_TYPE", "") in valid_post_types:
+    stdin_io = io.BytesIO(stdin_content)
+    fields = cgi.parse(stdin_io)
+    for k in sorted(fields.keys()):
+        print("POST:{}:{}".format(k, fields[k]))
+
+print("END")
+
+