commit c0224a266cba8707da8f8826dac8ff1edb38306a
from: Omar Polo <op@omarpolo.com>
date: Sun Jan 17 23:24:26 2021 UTC

removed

commit - d3a08f4d172687d4e3e60e7faaa8830bb7f9f9db
commit + c0224a266cba8707da8f8826dac8ff1edb38306a
blob - b25aa5d7e844d05820da24098072ea9ab419f316 (mode 644)
blob + /dev/null
--- cgi.c
+++ /dev/null
@@ -1,197 +0,0 @@
-/*
- * Copyright (c) 2021 Omar Polo <op@omarpolo.com>
- *
- * Permission to use, copy, modify, and distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
- * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
- * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
- * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
- * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- */
-
-#include <netdb.h>
-
-#include <err.h>
-#include <errno.h>
-#include <string.h>
-
-#include "gmid.h"
-
-/*
- * the inverse of this algorithm, i.e. starting from the start of the
- * path + strlen(cgi), and checking if each component, should be
- * faster.  But it's tedious to write.  This does the opposite: starts
- * from the end and strip one component at a time, until either an
- * executable is found or we emptied the path.
- */
-int
-check_for_cgi(char *path, char *query, struct pollfd *fds, struct client *c)
-{
-	char *end;
-	end = strchr(path, '\0');
-
-	/* NB: assume CGI is enabled and path matches cgi */
-
-	while (end > path) {
-		/* go up one level.  UNIX paths are simple and POSIX
-		 * dirname, with its ambiguities on if the given path
-		 * is changed or not, gives me headaches. */
-		while (*end != '/')
-			end--;
-		*end = '\0';
-
-		switch (check_path(c, path, &c->fd)) {
-		case FILE_EXECUTABLE:
-			return start_cgi(path, end+1, query, fds,c);
-		case FILE_MISSING:
-			break;
-		default:
-			goto err;
-		}
-
-		*end = '/';
-		end--;
-	}
-
-err:
-	if (!start_reply(fds, c, NOT_FOUND, "not found"))
-		return 0;
-	goodbye(fds, c);
-	return 0;
-}
-
-int
-start_cgi(const char *spath, const char *relpath, const char *query,
-    struct pollfd *fds, struct client *c)
-{
-	char addr[NI_MAXHOST];
-	const char *ruser, *cissuer, *chash;
-	int e;
-
-	e = getnameinfo((struct sockaddr*)&c->addr, sizeof(c->addr),
-	    addr, sizeof(addr),
-	    NULL, 0,
-	    NI_NUMERICHOST);
-	if (e != 0)
-		goto err;
-
-	if (tls_peer_cert_provided(c->ctx)) {
-		ruser = tls_peer_cert_subject(c->ctx);
-		cissuer = tls_peer_cert_issuer(c->ctx);
-		chash = tls_peer_cert_hash(c->ctx);
-	} else {
-		ruser = NULL;
-		cissuer = NULL;
-		chash = NULL;
-	}
-
-	if (!send_string(exfd, spath)
-	    || !send_string(exfd, relpath)
-	    || !send_string(exfd, query)
-	    || !send_string(exfd, addr)
-	    || !send_string(exfd, ruser)
-	    || !send_string(exfd, cissuer)
-	    || !send_string(exfd, chash)
-	    || !send_vhost(exfd, c->host))
-		goto err;
-
-	close(c->fd);
-	if ((c->fd = recv_fd(exfd)) == -1) {
-		if (!start_reply(fds, c, TEMP_FAILURE, "internal server error"))
-			return 0;
-		goodbye(fds, c);
-		return 0;
-	}
-	c->child = 1;
-	c->state = S_SENDING;
-	cgi_poll_on_child(fds, c);
-	/* handle_cgi(fds, c); */
-	return 0;
-
-err:
-	/* fatal("cannot talk to the executor process: %s", strerror(errno)); */
-	err(1, "cannot talk to the executor process");
-}
-
-void
-cgi_poll_on_child(struct pollfd *fds, struct client *c)
-{
-	int fd;
-
-	if (c->waiting_on_child)
-		return;
-	c->waiting_on_child = 1;
-
-	fds->events = POLLIN;
-
-	fd = fds->fd;
-	fds->fd = c->fd;
-	c->fd = fd;
-}
-
-void
-cgi_poll_on_client(struct pollfd *fds, struct client *c)
-{
-	int fd;
-
-	if (!c->waiting_on_child)
-		return;
-	c->waiting_on_child = 0;
-
-	fd = fds->fd;
-	fds->fd = c->fd;
-	c->fd = fd;
-}
-
-void
-handle_cgi(struct pollfd *fds, struct client *c)
-{
-	ssize_t r;
-
-	/* ensure c->fd is the child and fds->fd the client */
-	cgi_poll_on_client(fds, c);
-
-	while (1) {
-		if (c->len == 0) {
-			if ((r = read(c->fd, c->sbuf, sizeof(c->sbuf))) == 0)
-				goto end;
-			if (r == -1) {
-				if (errno == EAGAIN || errno == EWOULDBLOCK) {
-					cgi_poll_on_child(fds, c);
-					return;
-				}
-                                goto end;
-			}
-			c->len = r;
-			c->off = 0;
-		}
-
-		while (c->len > 0) {
-			switch (r = tls_write(c->ctx, c->sbuf + c->off, c->len)) {
-			case -1:
-				goto end;
-
-			case TLS_WANT_POLLOUT:
-				fds->events = POLLOUT;
-				return;
-
-			case TLS_WANT_POLLIN:
-				fds->events = POLLIN;
-				return;
-
-			default:
-                                c->off += r;
-				c->len -= r;
-				break;
-			}
-		}
-	}
-
-end:
-	goodbye(fds, c);
-}