GopherProxy

	Make CGI environment more conformant to RFC3875. - geomyidae - a small C-based …
	git clone git://git.codemadness.org/geomyidae
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	---
	commit 4db13c5e462c939ad71bc0d1bf0cdbe117770d54
	parent 06a070824c9fcbc590986c1931ca6266463a613f
	Author: Christoph Lohmann <[email protected]>
	Date: Fri, 6 Jun 2025 21:23:02 +0200

	Make CGI environment more conformant to RFC3875.

	Diffstat:
	M handlr.c \| 10 ++++++++++
	M ind.c \| 62 +++++++++++++++--------------…

	2 files changed, 40 insertions(+), 32 deletions(-)
	---
	diff --git a/handlr.c b/handlr.c
	@@ -139,6 +139,12 @@ handlebin(int sock, char file, char port, char *base, ch…
	}
	}

	+/*
	+ * See RFC3875 5 NPH Scripts
	+ *
	+ * In gopher, with no header parsing, this allows bi-directional
	+ * long-running communications. One example would be raw HTTP emulation.
	+ */
	void
	handlecgi(int sock, char file, char port, char base, char args,
	char sear, char ohost, char chost, char bhost, int istls,
	@@ -188,6 +194,10 @@ handlecgi(int sock, char file, char port, char *base, ch…
	}
	}

	+/*
	+ * This is RFC3875 NPH Scripts
	+ * plus parsing of GPH syntax for easier gophermap portability.
	+ */
	void
	handledcgi(int sock, char file, char port, char base, char args,
	char sear, char ohost, char chost, char bhost, int istls,
	diff --git a/ind.c b/ind.c
	@@ -539,53 +539,52 @@ setcgienviron(char file, char path, char port, char b…
	char sear, char ohost, char chost, char bhost, int istls,
	char sel, char traverse)
	{
	- /*
	- * TODO: Clean environment from possible unsafe environment variables.
	- * But then it is the responsibility of the script writer.
	- */
	- unsetenv("AUTH_TYPE");
	+ /* RFC3875 4.1.1 */
	+ setenv("AUTH_TYPE", "", 1);
	+ /* RFC3875 4.1.2 */
	unsetenv("CONTENT_LENGTH");
	+ /* RFC3875 4.1.3 */
	unsetenv("CONTENT_TYPE");
	+ /* RFC3875 4.1.4 */
	setenv("GATEWAY_INTERFACE", "CGI/1.1", 1);
	- /* TODO: Separate, if run like rest.dcgi. */
	- setenv("SCRIPT_NAME", path+strlen(base), 1);
	- setenv("SCRIPT_FILENAME", path, 1);
	-
	- setenv("QUERY_STRING", args, 1);
	- setenv("SELECTOR", sel, 1);
	- setenv("REQUEST", sel, 1);
	+ /* RFC3875 4.1.5 */
	setenv("PATH_INFO", traverse, 1);
	-
	+ /* RFC3875 4.1.6 */
	+ setenv("PATH_TRANSLATED", traverse, 1);
	+ /* RFC3875 4.1.7 */
	+ setenv("QUERY_STRING", args, 1);
	+ /* RFC3875 4.1.8 */
	setenv("REMOTE_ADDR", chost, 1);
	- /*
	- * Don't do a reverse lookup on every call. Only do when needed, in
	- * the script. The RFC allows us to set the IP to the value.
	- */
	+ /* RFC3875 4.1.9 */
	setenv("REMOTE_HOST", chost, 1);
	- /* Please do not implement identd here. */
	+ /* RFC3875 4.1.10 */
	unsetenv("REMOTE_IDENT");
	+ /* RFC3875 4.1.11 */
	unsetenv("REMOTE_USER");
	- /* Make PHP happy. */
	- setenv("REDIRECT_STATUS", "", 1);
	- /*
	- * Only GET is possible in gopher. POST emulation would be really
	- * ugly.
	- */
	+ /* RFC3875 4.1.12 */
	setenv("REQUEST_METHOD", "GET", 1);
	+ /* RFC3875 4.1.13 */
	+ setenv("SCRIPT_NAME", path+strlen(base), 1);
	+ /* RFC3875 4.1.14 */
	setenv("SERVER_NAME", ohost, 1);
	+ /* RFC3875 4.1.15 */
	setenv("SERVER_PORT", port, 1);
	- setenv("SERVER_LISTEN_NAME", bhost, 1);
	- if (istls) {
	- setenv("SERVER_PROTOCOL", "gophers/1.0", 1);
	- } else {
	- setenv("SERVER_PROTOCOL", "gopher/1.0", 1);
	- }
	+ /* RFC3875 4.1.16 */
	+ setenv("SERVER_PROTOCOL", "gopher/1.0", 1);
	+ /* RFC3875 4.1.17 */
	setenv("SERVER_SOFTWARE", "geomyidae", 1);

	- setenv("X_GOPHER_SEARCH", sear, 1);
	+ /* GOPHER-specific variables */
	+ setenv("GOPHER_SELECTOR", sel, 1);
	+ setenv("GOPHER_REQUEST", sel, 1);
	+ setenv("GOPHER_SEARCH", sear, 1);
	/* legacy compatibility */
	setenv("SEARCHREQUEST", sear, 1);
	+ setenv("SCRIPT_FILENAME", path, 1);

	+ /* Make PHP happy. */
	+ setenv("REDIRECT_STATUS", "", 1);
	+ setenv("SERVER_LISTEN_NAME", bhost, 1);
	if (istls) {
	setenv("GOPHERS", "on", 1);
	setenv("HTTPS", "on", 1);
	@@ -593,7 +592,6 @@ setcgienviron(char file, char path, char port, char bas…
	unsetenv("GOPHERS");
	unsetenv("HTTPS");
	}
	-
	}

	char *