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[package] add uhttpd (moved from LuCI trunk) 

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@20428 3c298f89-4303-0410-b956-a3cf2f4a3e73
master
Jo-Philipp Wich 2010-03-25 15:46:16 +00:00
parent 1bcb705a6d
commit 4ebe5e79c6
17 changed files with 3997 additions and 0 deletions
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92
package/uhttpd/Makefile Normal file
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#
# Copyright (C) 2010 Jo-Philipp Wich <xm@subsignal.org>
#
# This is free software, licensed under the GNU General Public License v2.
# See /LICENSE for more information.
#
include $(TOPDIR)/rules.mk
PKG_NAME:=uhttpd
PKG_RELEASE:=1
PKG_BUILD_DIR := $(BUILD_DIR)/$(PKG_NAME)
include $(INCLUDE_DIR)/package.mk
define Package/uhttpd/default
SECTION:=net
CATEGORY:=Network
TITLE:=uHTTPd - tiny, single threaded HTTP server
endef
define Package/uhttpd
$(Package/uhttpd/default)
MENU:=1
endef
define Package/uhttpd/description
uHTTPd is a tiny single threaded HTTP server with TLS, CGI and Lua
support. It is intended as a drop-in replacement for the Busybox
HTTP daemon.
endef
define Package/uhttpd-mod-tls
$(Package/uhttpd/default)
TITLE+= (TLS plugin)
DEPENDS:=uhttpd +libcyassl
endef
define Package/uhttpd-mod-tls/description
The TLS plugin adds HTTPS support to uHTTPd.
endef
define Package/uhttpd-mod-lua
$(Package/uhttpd/default)
TITLE+= (Lua plugin)
DEPENDS:=uhttpd +liblua
endef
define Package/uhttpd-mod-lua/description
The Lua plugin adds a CGI-like Lua runtime interface to uHTTPd.
endef
# hack to use CyASSL headers
TARGET_CFLAGS += -I$(firstword $(wildcard $(BUILD_DIR)/cyassl-*/include))
MAKE_VARS += FPIC="$(FPIC)"
define Build/Prepare
mkdir -p $(PKG_BUILD_DIR)
$(CP) ./src/* $(PKG_BUILD_DIR)/
endef
define Package/uhttpd/conffiles
/etc/config/uhttpd
endef
define Package/uhttpd/install
$(INSTALL_DIR) $(1)/etc/init.d
$(INSTALL_BIN) ./files/uhttpd.init $(1)/etc/init.d/uhttpd
$(INSTALL_DIR) $(1)/etc/config
$(INSTALL_CONF) ./files/uhttpd.config $(1)/etc/config/uhttpd
$(INSTALL_DIR) $(1)/usr/sbin
$(INSTALL_BIN) $(PKG_BUILD_DIR)/uhttpd $(1)/usr/sbin/uhttpd
endef
define Package/uhttpd-mod-tls/install
$(INSTALL_DIR) $(1)/usr/lib
$(INSTALL_BIN) $(PKG_BUILD_DIR)/uhttpd_tls.so $(1)/usr/lib/
endef
define Package/uhttpd-mod-lua/install
$(INSTALL_DIR) $(1)/usr/lib
$(INSTALL_BIN) $(PKG_BUILD_DIR)/uhttpd_lua.so $(1)/usr/lib/
endef
$(eval $(call BuildPackage,uhttpd))
$(eval $(call BuildPackage,uhttpd-mod-tls))
$(eval $(call BuildPackage,uhttpd-mod-lua))

53
package/uhttpd/files/uhttpd.config Normal file
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# Server configuration
config uhttpd main
# Server document root
option home /www
# Certificate and private key for HTTPS.
# If no listen_https addresses are given,
# the key options are ignored.
option cert /etc/uhttpd.crt
option key /etc/uhttpd.key
# CGI url prefix, will be searched in docroot.
# Default is /cgi-bin
option cgi_prefix /cgi-bin
# Lua url prefix and handler script.
# Lua support is disabled if no prefix given.
# option lua_prefix /luci
# option lua_handler /usr/lib/lua/luci/sgi/uhttpd.lua
# HTTP listen addresses, multiple allowed
list listen_http 0.0.0.0:80
# list listen_http [::]:80
# HTTPS listen addresses, multiple allowed
list listen_https 0.0.0.0:443
# list listen_https [::]:443
# Basic auth realm, defaults to local hostname
# option realm OpenWrt
# Configuration file in busybox httpd format
# option config /etc/httpd.conf
# Certificate defaults for px5g key generator
config cert px5g
# Validity time
option days 730
# RSA key size
option bits 1024
# Location
option country DE
option state Berlin
option location Berlin
# Common name
option commonname OpenWrt

115
package/uhttpd/files/uhttpd.init Executable file
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#!/bin/sh /etc/rc.common
# Copyright (C) 2010 Jo-Philipp Wich
START=50
UHTTPD_BIN="/usr/sbin/uhttpd"
PX5G_BIN="/usr/sbin/px5g"
append_listen_http() {
append UHTTPD_ARGS "-p $1"
}
append_listen_https() {
append UHTTPD_ARGS "-s $1"
}
append_arg() {
local cfg="$1"
local var="$2"
local opt="$3"
local def="$4"
local val
config_get val "$cfg" "$var"
[ -n "$val" -o -n "$def" ] && append UHTTPD_ARGS "$opt ${val:-$def}"
}
generate_keys() {
local cfg="$1"
local key="$2"
local crt="$3"
local days bits country state location commonname
config_get days "$cfg" days
config_get bits "$cfg" bits
config_get country "$cfg" country
config_get state "$cfg" state
config_get location "$cfg" location
config_get commonname "$cfg" commonname
[ -x "$PX5G_BIN" ] && {
$PX5G_BIN selfsigned -der \
-days ${days:-730} -newkey rsa:${bits:-1024} -keyout "$UHTTPD_KEY" -out "$UHTTPD_CERT" \
-subj /C=${country:-DE}/ST=${state:-Saxony}/L=${location:-Leipzig}/CN=${commonname:-OpenWrt}
} || {
echo "WARNING: the specified certificate and key" \
"files do not exist and the px5g generator" \
"is not available, skipping SSL setup."
}
}
start_instance()
{
UHTTPD_ARGS=""
UHTTPD_CERT=""
UHTTPD_KEY=""
local cfg="$1"
local realm="$(uci get system.@system[0].hostname 2>/dev/null)"
local ssl
append_arg "$cfg" home "-h"
append_arg "$cfg" realm "-r" "${realm:-OpenWrt}"
append_arg "$cfg" config "-c"
append_arg "$cfg" cgi_prefix "-x"
append_arg "$cfg" lua_prefix "-l"
append_arg "$cfg" lua_handler "-L"
config_list_foreach "$cfg" listen_http \
append_listen_http
config_get ssl "$cfg" listen_https
config_get UHTTPD_KEY "$cfg" key /etc/uhttpd.key
config_get UHTTPD_CERT "$cfg" cert /etc/uhttpd.crt
[ -n "$ssl" ] && {
[ -f "$UHTTPD_CERT" -a -f "$UHTTPD_KEY" ] || {
config_foreach generate_keys cert
}
[ -f "$UHTTPD_CERT" -a -f "$UHTTPD_KEY" ] && {
append_arg "$cfg" cert "-C"
append_arg "$cfg" key "-K"
config_list_foreach "$cfg" listen_https \
append_listen_https
}
}
start-stop-daemon -S -x $UHTTPD_BIN \
-p /var/run/uhttpd_${cfg}.pid \
-m -b -- -f $UHTTPD_ARGS
}
stop_instance()
{
local cfg="$1"
[ -f /var/run/uhttpd_${cfg}.pid ] && {
start-stop-daemon -K -q -n ${UHTTPD_BIN##*/} \
-p /var/run/uhttpd_${cfg}.pid -s TERM
rm -f /var/run/uhttpd_${cfg}.pid
}
}
start() {
config_load uhttpd
config_foreach start_instance uhttpd
}
stop() {
config_load uhttpd
config_foreach stop_instance uhttpd
}

52
package/uhttpd/src/Makefile Normal file
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CGI_SUPPORT ?= 1
LUA_SUPPORT ?= 1
TLS_SUPPORT ?= 1
CFLAGS ?= -I./lua-5.1.4/src -I./cyassl-1.4.0/include -O0 -ggdb3
LDFLAGS ?= -L./lua-5.1.4/src -L./cyassl-1.4.0/src/.libs
CFLAGS += -Wall --std=gnu99
OBJ = uhttpd.o uhttpd-file.o uhttpd-utils.o
LIB = -Wl,--export-dynamic -lcrypt -ldl
TLSLIB =
LUALIB =
world: compile
ifeq ($(CGI_SUPPORT),1)
OBJ += uhttpd-cgi.o
CFLAGS += -DHAVE_CGI
endif
ifeq ($(LUA_SUPPORT),1)
CFLAGS += -DHAVE_LUA
LUALIB = uhttpd_lua.so
$(LUALIB): uhttpd-lua.c
$(CC) $(CFLAGS) $(LDFLAGS) $(FPIC) \
-shared -lm -llua -ldl \
-o $(LUALIB) uhttpd-lua.c
endif
ifeq ($(TLS_SUPPORT),1)
CFLAGS += -DHAVE_TLS
TLSLIB = uhttpd_tls.so
$(TLSLIB): uhttpd-tls.c
$(CC) $(CFLAGS) $(LDFLAGS) $(FPIC) \
-shared -lcyassl \
-o $(TLSLIB) uhttpd-tls.c
endif
%.o: %.c
$(CC) $(CFLAGS) -c -o $@ $<
compile: $(OBJ) $(TLSLIB) $(LUALIB)
$(CC) -o uhttpd $(LDFLAGS) $(LIB) $(OBJ)
clean:
rm -f *.o *.so uhttpd

561
package/uhttpd/src/uhttpd-cgi.c Normal file
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/*
* uhttpd - Tiny single-threaded httpd - CGI handler
*
* Copyright (C) 2010 Jo-Philipp Wich <xm@subsignal.org>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "uhttpd.h"
#include "uhttpd-utils.h"
#include "uhttpd-cgi.h"
static struct http_response * uh_cgi_header_parse(char *buf, int len, int *off)
{
char *bufptr = NULL;
char *hdrname = NULL;
int hdrcount = 0;
int pos = 0;
static struct http_response res;
if( ((bufptr = strfind(buf, len, "\r\n\r\n", 4)) != NULL) ||
((bufptr = strfind(buf, len, "\n\n", 2)) != NULL)
) {
*off = (int)(bufptr - buf) + ((bufptr[0] == '\r') ? 4 : 2);
memset(&res, 0, sizeof(res));
res.statuscode = 200;
res.statusmsg = "OK";
bufptr = &buf[0];
for( pos = 0; pos < len; pos++ )
{
if( !hdrname && (buf[pos] == ':') )
{
buf[pos++] = 0;
if( (pos < len) && (buf[pos] == ' ') )
pos++;
if( pos < len )
{
hdrname = bufptr;
bufptr = &buf[pos];
}
}
else if( (buf[pos] == '\r') || (buf[pos] == '\n') )
{
buf[pos++] = 0;
if( ! hdrname )
break;
if( (pos < len) && (buf[pos] == '\n') )
pos++;
if( pos < len )
{
if( (hdrcount + 1) < array_size(res.headers) )
{
if( ! strcasecmp(hdrname, "Status") )
{
res.statuscode = atoi(bufptr);
if( res.statuscode < 100 )
res.statuscode = 200;
if( ((bufptr = strchr(bufptr, ' ')) != NULL) && (&bufptr[1] != 0) )
res.statusmsg = &bufptr[1];
}
else
{
res.headers[hdrcount++] = hdrname;
res.headers[hdrcount++] = bufptr;
}
bufptr = &buf[pos];
hdrname = NULL;
}
else
{
return NULL;
}
}
}
}
return &res;
}
return NULL;
}
static char * uh_cgi_header_lookup(struct http_response *res, const char *hdrname)
{
int i;
foreach_header(i, res->headers)
{
if( ! strcasecmp(res->headers[i], hdrname) )
return res->headers[i+1];
}
return NULL;
}
static int uh_cgi_error_500(struct client *cl, struct http_request *req, const char *message)
{
if( uh_http_sendf(cl, NULL,
"HTTP/%.1f 500 Internal Server Error\r\n"
"Content-Type: text/plain\r\n%s\r\n",
req->version,
(req->version > 1.0)
? "Transfer-Encoding: chunked\r\n" : ""
) >= 0
) {
return uh_http_send(cl, req, message, -1);
}
return -1;
}
void uh_cgi_request(struct client *cl, struct http_request *req, struct path_info *pi)
{
int i, hdroff, bufoff;
int hdrlen = 0;
int buflen = 0;
int fd_max = 0;
int content_length = 0;
int header_sent = 0;
int rfd[2] = { 0, 0 };
int wfd[2] = { 0, 0 };
char buf[UH_LIMIT_MSGHEAD];
char hdr[UH_LIMIT_MSGHEAD];
pid_t child;
fd_set reader;
fd_set writer;
struct sigaction sa;
struct timeval timeout;
struct http_response *res;
/* spawn pipes for me->child, child->me */
if( (pipe(rfd) < 0) || (pipe(wfd) < 0) )
{
uh_http_sendhf(cl, 500, "Internal Server Error",
"Failed to create pipe: %s", strerror(errno));
if( rfd[0] > 0 ) close(rfd[0]);
if( rfd[1] > 0 ) close(rfd[1]);
if( wfd[0] > 0 ) close(wfd[0]);
if( wfd[1] > 0 ) close(wfd[1]);
return;
}
/* fork off child process */
switch( (child = fork()) )
{
/* oops */
case -1:
uh_http_sendhf(cl, 500, "Internal Server Error",
"Failed to fork child: %s", strerror(errno));
return;
/* exec child */
case 0:
/* restore SIGTERM */
sa.sa_flags = 0;
sa.sa_handler = SIG_DFL;
sigemptyset(&sa.sa_mask);
sigaction(SIGTERM, &sa, NULL);
/* close loose pipe ends */
close(rfd[0]);
close(wfd[1]);
/* patch stdout and stdin to pipes */
dup2(rfd[1], 1);
dup2(wfd[0], 0);
/* check for regular, world-executable file */
if( (pi->stat.st_mode & S_IFREG) &&
(pi->stat.st_mode & S_IXOTH)
) {
/* build environment */
clearenv();
/* common information */
setenv("GATEWAY_INTERFACE", "CGI/1.1", 1);
setenv("SERVER_SOFTWARE", "uHTTPd", 1);
setenv("PATH", "/sbin:/usr/sbin:/bin:/usr/bin", 1);
#ifdef HAVE_TLS
/* https? */
if( cl->tls )
setenv("HTTPS", "on", 1);
#endif
/* addresses */
setenv("SERVER_NAME", sa_straddr(&cl->servaddr), 1);
setenv("SERVER_ADDR", sa_straddr(&cl->servaddr), 1);
setenv("SERVER_PORT", sa_strport(&cl->servaddr), 1);
setenv("REMOTE_HOST", sa_straddr(&cl->peeraddr), 1);
setenv("REMOTE_ADDR", sa_straddr(&cl->peeraddr), 1);
setenv("REMOTE_PORT", sa_strport(&cl->peeraddr), 1);
/* path information */
setenv("SCRIPT_NAME", pi->name, 1);
setenv("SCRIPT_FILENAME", pi->phys, 1);
setenv("DOCUMENT_ROOT", pi->root, 1);
setenv("QUERY_STRING", pi->query ? pi->query : "", 1);
if( pi->info )
setenv("PATH_INFO", pi->info, 1);
/* http version */
if( req->version > 1.0 )
setenv("SERVER_PROTOCOL", "HTTP/1.1", 1);
else
setenv("SERVER_PROTOCOL", "HTTP/1.0", 1);
/* request method */
switch( req->method )
{
case UH_HTTP_MSG_GET:
setenv("REQUEST_METHOD", "GET", 1);
break;
case UH_HTTP_MSG_HEAD:
setenv("REQUEST_METHOD", "HEAD", 1);
break;
case UH_HTTP_MSG_POST:
setenv("REQUEST_METHOD", "POST", 1);
break;
}
/* request url */
setenv("REQUEST_URI", req->url, 1);
/* remote user */
if( req->realm )
setenv("REMOTE_USER", req->realm->user, 1);
/* request message headers */
foreach_header(i, req->headers)
{
if( ! strcasecmp(req->headers[i], "Accept") )
setenv("HTTP_ACCEPT", req->headers[i+1], 1);
else if( ! strcasecmp(req->headers[i], "Accept-Charset") )
setenv("HTTP_ACCEPT_CHARSET", req->headers[i+1], 1);
else if( ! strcasecmp(req->headers[i], "Accept-Encoding") )
setenv("HTTP_ACCEPT_ENCODING", req->headers[i+1], 1);
else if( ! strcasecmp(req->headers[i], "Accept-Language") )
setenv("HTTP_ACCEPT_LANGUAGE", req->headers[i+1], 1);
else if( ! strcasecmp(req->headers[i], "Authorization") )
setenv("HTTP_AUTHORIZATION", req->headers[i+1], 1);
else if( ! strcasecmp(req->headers[i], "Connection") )
setenv("HTTP_CONNECTION", req->headers[i+1], 1);
else if( ! strcasecmp(req->headers[i], "Cookie") )
setenv("HTTP_COOKIE", req->headers[i+1], 1);
else if( ! strcasecmp(req->headers[i], "Host") )
setenv("HTTP_HOST", req->headers[i+1], 1);
else if( ! strcasecmp(req->headers[i], "Referer") )
setenv("HTTP_REFERER", req->headers[i+1], 1);
else if( ! strcasecmp(req->headers[i], "User-Agent") )
setenv("HTTP_USER_AGENT", req->headers[i+1], 1);
else if( ! strcasecmp(req->headers[i], "Content-Type") )
setenv("CONTENT_TYPE", req->headers[i+1], 1);
else if( ! strcasecmp(req->headers[i], "Content-Length") )
setenv("CONTENT_LENGTH", req->headers[i+1], 1);
}
/* execute child code ... */
if( chdir(pi->root) )
perror("chdir()");
execl(pi->phys, pi->phys, NULL);
/* in case it fails ... */
printf(
"Status: 500 Internal Server Error\r\n\r\n"
"Unable to launch the requested CGI program:\n"
" %s: %s\n",
pi->phys, strerror(errno)
);
}
/* 403 */
else
{
printf(
"Status: 403 Forbidden\r\n\r\n"
"Access to this resource is forbidden\n"
);
}
close(wfd[0]);
close(rfd[1]);
exit(0);
break;
/* parent; handle I/O relaying */
default:
/* close unneeded pipe ends */
close(rfd[1]);
close(wfd[0]);
/* max watch fd */
fd_max = max(rfd[0], wfd[1]) + 1;
/* find content length */
if( req->method == UH_HTTP_MSG_POST )
{
foreach_header(i, req->headers)
{
if( ! strcasecmp(req->headers[i], "Content-Length") )
{
content_length = atoi(req->headers[i+1]);
break;
}
}
}
memset(hdr, 0, sizeof(hdr));
#define ensure(x) \
do { if( x < 0 ) goto out; } while(0)
/* I/O loop, watch our pipe ends and dispatch child reads/writes from/to socket */
while( 1 )
{
FD_ZERO(&reader);
FD_ZERO(&writer);
FD_SET(rfd[0], &reader);
FD_SET(wfd[1], &writer);
timeout.tv_sec = 15;
timeout.tv_usec = 0;
/* wait until we can read or write or both */
if( select(fd_max, &reader, (content_length > -1) ? &writer : NULL, NULL, &timeout) > 0 )
{
/* ready to write to cgi program */
if( FD_ISSET(wfd[1], &writer) )
{
/* there is unread post data waiting */
if( content_length > 0 )
{
/* read it from socket ... */
if( (buflen = uh_tcp_recv(cl, buf, min(content_length, sizeof(buf)))) > 0 )
{
/* ... and write it to child's stdin */
if( write(wfd[1], buf, buflen) < 0 )
perror("write()");
content_length -= buflen;
}
/* unexpected eof! */
else
{
if( write(wfd[1], "", 0) < 0 )
perror("write()");
content_length = 0;
}
}
/* there is no more post data, close pipe to child's stdin */
else if( content_length > -1 )
{
close(wfd[1]);
content_length = -1;
}
}
/* ready to read from cgi program */
if( FD_ISSET(rfd[0], &reader) )
{
/* read data from child ... */
if( (buflen = read(rfd[0], buf, sizeof(buf))) > 0 )
{
/* we have not pushed out headers yet, parse input */
if( ! header_sent )
{
/* head buffer not full and no end yet */
if( hdrlen < sizeof(hdr) )
{
bufoff = min(buflen, sizeof(hdr) - hdrlen);
memcpy(&hdr[hdrlen], buf, bufoff);
hdrlen += bufoff;
}
else
{
bufoff = 0;
}
/* try to parse header ... */
if( (res = uh_cgi_header_parse(hdr, hdrlen, &hdroff)) != NULL )
{
/* write status */
ensure(uh_http_sendf(cl, NULL,
"HTTP/%.1f %03d %s\r\n"
"Connection: close\r\n",
req->version, res->statuscode,
res->statusmsg));
/* add Content-Type if no Location or Content-Type */
if( !uh_cgi_header_lookup(res, "Location") &&
!uh_cgi_header_lookup(res, "Content-Type")
) {
ensure(uh_http_send(cl, NULL,
"Content-Type: text/plain\r\n", -1));
}
/* if request was HTTP 1.1 we'll respond chunked */
if( (req->version > 1.0) &&
!uh_cgi_header_lookup(res, "Transfer-Encoding")
) {
ensure(uh_http_send(cl, NULL,
"Transfer-Encoding: chunked\r\n", -1));
}
/* write headers from CGI program */
foreach_header(i, res->headers)
{
ensure(uh_http_sendf(cl, NULL, "%s: %s\r\n",
res->headers[i], res->headers[i+1]));
}
/* terminate header */
ensure(uh_http_send(cl, NULL, "\r\n", -1));
/* push out remaining head buffer */
if( hdroff < hdrlen )
ensure(uh_http_send(cl, req, &hdr[hdroff], hdrlen - hdroff));
}
/* ... failed and head buffer exceeded */
else if( hdrlen >= sizeof(hdr) )
{
ensure(uh_cgi_error_500(cl, req,
"The CGI program generated an invalid response:\n\n"));
ensure(uh_http_send(cl, req, hdr, hdrlen));
}
/* ... failed but free buffer space, try again */
else
{
continue;
}
/* push out remaining read buffer */
if( bufoff < buflen )
ensure(uh_http_send(cl, req, &buf[bufoff], buflen - bufoff));
header_sent = 1;
continue;
}
/* headers complete, pass through buffer to socket */
ensure(uh_http_send(cl, req, buf, buflen));
}
/* looks like eof from child */
else
{
/* cgi script did not output useful stuff at all */
if( ! header_sent )
{
/* I would do this ...
*
* uh_cgi_error_500(cl, req,
* "The CGI program generated an "
* "invalid response:\n\n");
*
* ... but in order to stay as compatible as possible,
* treat whatever we got as text/plain response and
* build the required headers here.
*/
ensure(uh_http_sendf(cl, NULL,
"HTTP/%.1f 200 OK\r\n"
"Content-Type: text/plain\r\n"
"%s\r\n",
req->version, (req->version > 1.0)
? "Transfer-Encoding: chunked\r\n" : ""
));
ensure(uh_http_send(cl, req, hdr, hdrlen));
}
/* send final chunk if we're in chunked transfer mode */
ensure(uh_http_send(cl, req, "", 0));
break;
}
}
}
/* no activity for 15 seconds... looks dead */
else
{
ensure(uh_http_sendhf(cl, 504, "Gateway Timeout",
"The CGI script took too long to produce a response"));
break;
}
}
out:
close(rfd[0]);
close(wfd[1]);
if( !kill(child, 0) )
kill(child, SIGTERM);
break;
}
}

31
package/uhttpd/src/uhttpd-cgi.h Normal file
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/*
* uhttpd - Tiny single-threaded httpd - CGI header
*
* Copyright (C) 2010 Jo-Philipp Wich <xm@subsignal.org>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef _UHTTPD_CGI_
#include <errno.h>
#include <unistd.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <linux/limits.h>
void uh_cgi_request(
struct client *cl, struct http_request *req, struct path_info *pi
);
#endif

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package/uhttpd/src/uhttpd-file.c Normal file
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/*
* uhttpd - Tiny single-threaded httpd - Static file handler
*
* Copyright (C) 2010 Jo-Philipp Wich <xm@subsignal.org>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#define _XOPEN_SOURCE 500 /* strptime() */
#define _BSD_SOURCE /* scandir(), timegm() */
#include "uhttpd.h"
#include "uhttpd-utils.h"
#include "uhttpd-file.h"
#include "uhttpd-mimetypes.h"
static const char * uh_file_mime_lookup(const char *path)
{
struct mimetype *m = &uh_mime_types[0];
char *p, *pd, *ps;
ps = strrchr(path, '/');
pd = strrchr(path, '.');
/* use either slash or dot as separator, whatever comes last */
p = (ps && pd && (ps > pd)) ? ps : pd;
if( (p != NULL) && (*(++p) != 0) )
{
while( m->extn )
{
if( ! strcasecmp(p, m->extn) )
return m->mime;
m++;
}
}
return "application/octet-stream";
}
static const char * uh_file_mktag(struct stat *s)
{
static char tag[128];
snprintf(tag, sizeof(tag), "\"%x-%x-%x\"",
(unsigned int) s->st_ino,
(unsigned int) s->st_size,
(unsigned int) s->st_mtime
);
return tag;
}
static time_t uh_file_date2unix(const char *date)
{
struct tm t;
memset(&t, 0, sizeof(t));
if( strptime(date, "%a, %d %b %Y %H:%M:%S %Z", &t) != NULL )
return timegm(&t);
return 0;
}
static char * uh_file_unix2date(time_t ts)
{
static char str[128];
struct tm *t = gmtime(&ts);
strftime(str, sizeof(str), "%a, %d %b %Y %H:%M:%S GMT", t);
return str;
}
static char * uh_file_header_lookup(struct http_request *req, const char *name)
{
int i;
foreach_header(i, req->headers)
{
if( ! strcasecmp(req->headers[i], name) )
return req->headers[i+1];
}
return NULL;
}
static void uh_file_response_ok_hdrs(struct client *cl, struct http_request *req, struct stat *s)
{
uh_http_sendf(cl, NULL, "Connection: close\r\n");
if( s )
{
uh_http_sendf(cl, NULL, "ETag: %s\r\n", uh_file_mktag(s));
uh_http_sendf(cl, NULL, "Last-Modified: %s\r\n", uh_file_unix2date(s->st_mtime));
}
uh_http_sendf(cl, NULL, "Date: %s\r\n", uh_file_unix2date(time(NULL)));
}
static void uh_file_response_200(struct client *cl, struct http_request *req, struct stat *s)
{
uh_http_sendf(cl, NULL, "HTTP/%.1f 200 OK\r\n", req->version);
uh_file_response_ok_hdrs(cl, req, s);
}
static void uh_file_response_304(struct client *cl, struct http_request *req, struct stat *s)
{
uh_http_sendf(cl, NULL, "HTTP/%.1f 304 Not Modified\r\n", req->version);
uh_file_response_ok_hdrs(cl, req, s);
}
static void uh_file_response_412(struct client *cl, struct http_request *req)
{
uh_http_sendf(cl, NULL,
"HTTP/%.1f 412 Precondition Failed\r\n"
"Connection: close\r\n", req->version);
}
static int uh_file_if_match(struct client *cl, struct http_request *req, struct stat *s)
{
const char *tag = uh_file_mktag(s);
char *hdr = uh_file_header_lookup(req, "If-Match");
char *p;
int i;
if( hdr )
{
p = &hdr[0];
for( i = 0; i < strlen(hdr); i++ )
{
if( (hdr[i] == ' ') || (hdr[i] == ',') )
{
hdr[i++] = 0;
p = &hdr[i];
}
else if( !strcmp(p, "*") || !strcmp(p, tag) )
{
return 1;
}
}
uh_file_response_412(cl, req);
return 0;
}
return 1;
}
static int uh_file_if_modified_since(struct client *cl, struct http_request *req, struct stat *s)
{
char *hdr = uh_file_header_lookup(req, "If-Modified-Since");
if( hdr )
{
if( uh_file_date2unix(hdr) < s->st_mtime )
{
return 1;
}
else
{
uh_file_response_304(cl, req, s);
return 0;
}
}
return 1;
}
static int uh_file_if_none_match(struct client *cl, struct http_request *req, struct stat *s)
{
const char *tag = uh_file_mktag(s);
char *hdr = uh_file_header_lookup(req, "If-None-Match");
char *p;
int i;
if( hdr )
{
p = &hdr[0];
for( i = 0; i < strlen(hdr); i++ )
{
if( (hdr[i] == ' ') || (hdr[i] == ',') )
{
hdr[i++] = 0;
p = &hdr[i];
}
else if( !strcmp(p, "*") || !strcmp(p, tag) )
{
if( (req->method == UH_HTTP_MSG_GET) ||
(req->method == UH_HTTP_MSG_HEAD) )
uh_file_response_304(cl, req, s);
else
uh_file_response_412(cl, req);
return 0;
}
}
}
return 1;
}
static int uh_file_if_range(struct client *cl, struct http_request *req, struct stat *s)
{
char *hdr = uh_file_header_lookup(req, "If-Range");
if( hdr )
{
uh_file_response_412(cl, req);
return 0;
}
return 1;
}
static int uh_file_if_unmodified_since(struct client *cl, struct http_request *req, struct stat *s)
{
char *hdr = uh_file_header_lookup(req, "If-Unmodified-Since");
if( hdr )
{
if( uh_file_date2unix(hdr) <= s->st_mtime )
{
uh_file_response_412(cl, req);
return 0;
}
}
return 1;
}
static int uh_file_scandir_filter_dir(const struct dirent *e)
{
return strcmp(e->d_name, ".") ? 1 : 0;
}
static void uh_file_dirlist(struct client *cl, struct http_request *req, struct path_info *pi)
{
int i, count;
char filename[PATH_MAX];
char *pathptr;
struct dirent **files = NULL;
struct stat s;
uh_http_sendf(cl, req,
"<html><head><title>Index of %s</title></head>"
"<body><h1>Index of %s</h1><hr /><ol>",
pi->name, pi->name
);
if( (count = scandir(pi->phys, &files, uh_file_scandir_filter_dir, alphasort)) > 0 )
{
memset(filename, 0, sizeof(filename));
memcpy(filename, pi->phys, sizeof(filename));
pathptr = &filename[strlen(filename)];
/* list subdirs */
for( i = 0; i < count; i++ )
{
strncat(filename, files[i]->d_name,
sizeof(filename) - strlen(files[i]->d_name));
if( !stat(filename, &s) && (s.st_mode & S_IFDIR) )
uh_http_sendf(cl, req,
"<li><strong><a href='%s%s'>%s</a>/</strong><br />"
"<small>modified: %s<br />directory - %.02f kbyte"
"<br /><br /></small></li>",
pi->name, files[i]->d_name, files[i]->d_name,
uh_file_unix2date(s.st_mtime), s.st_size / 1024.0
);
*pathptr = 0;
}
/* list files */
for( i = 0; i < count; i++ )
{
strncat(filename, files[i]->d_name,
sizeof(filename) - strlen(files[i]->d_name));
if( !stat(filename, &s) && !(s.st_mode & S_IFDIR) )
uh_http_sendf(cl, req,
"<li><strong><a href='%s%s'>%s</a></strong><br />"
"<small>modified: %s<br />%s - %.02f kbyte<br />"
"<br /></small></li>",
pi->name, files[i]->d_name, files[i]->d_name,
uh_file_unix2date(s.st_mtime),
uh_file_mime_lookup(filename), s.st_size / 1024.0
);
*pathptr = 0;
free(files[i]);
}
}
free(files);
uh_http_sendf(cl, req, "</ol><hr /></body></html>");
uh_http_sendf(cl, req, "");
}
void uh_file_request(struct client *cl, struct http_request *req, struct path_info *pi)
{
int fd, rlen;
char buf[UH_LIMIT_MSGHEAD];
/* we have a file */
if( (pi->stat.st_mode & S_IFREG) && ((fd = open(pi->phys, O_RDONLY)) > 0) )
{
/* test preconditions */
if(
uh_file_if_modified_since(cl, req, &pi->stat) &&
uh_file_if_match(cl, req, &pi->stat) &&
uh_file_if_range(cl, req, &pi->stat) &&
uh_file_if_unmodified_since(cl, req, &pi->stat) &&
uh_file_if_none_match(cl, req, &pi->stat)
) {
/* write status */
uh_file_response_200(cl, req, &pi->stat);
uh_http_sendf(cl, NULL, "Content-Type: %s\r\n", uh_file_mime_lookup(pi->name));
uh_http_sendf(cl, NULL, "Content-Length: %i\r\n", pi->stat.st_size);
/* if request was HTTP 1.1 we'll respond chunked */
if( (req->version > 1.0) && (req->method != UH_HTTP_MSG_HEAD) )
uh_http_send(cl, NULL, "Transfer-Encoding: chunked\r\n", -1);
/* close header */
uh_http_send(cl, NULL, "\r\n", -1);
/* send body */
if( req->method != UH_HTTP_MSG_HEAD )
{
/* pump file data */
while( (rlen = read(fd, buf, sizeof(buf))) > 0 )
{
if( uh_http_send(cl, req, buf, rlen) < 0 )
break;
}
/* send trailer in chunked mode */
uh_http_send(cl, req, "", 0);
}
}
/* one of the preconditions failed, terminate opened header and exit */
else
{
uh_http_send(cl, NULL, "\r\n", -1);
}
close(fd);
}
/* directory */
else if( pi->stat.st_mode & S_IFDIR )
{
/* write status */
uh_file_response_200(cl, req, NULL);
if( req->version > 1.0 )
uh_http_send(cl, NULL, "Transfer-Encoding: chunked\r\n", -1);
uh_http_send(cl, NULL, "Content-Type: text/html\r\n\r\n", -1);
/* content */
uh_file_dirlist(cl, req, pi);
}
/* 403 */
else
{
uh_http_sendhf(cl, 403, "Forbidden",
"Access to this resource is forbidden");
}
}

38
package/uhttpd/src/uhttpd-file.h Normal file
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/*
* uhttpd - Tiny single-threaded httpd - Static file header
*
* Copyright (C) 2010 Jo-Philipp Wich <xm@subsignal.org>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef _UHTTPD_FILE_
#include <fcntl.h>
#include <time.h>
#include <strings.h>
#include <dirent.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <linux/limits.h>
struct mimetype {
const char *extn;
const char *mime;
};
void uh_file_request(
struct client *cl, struct http_request *req, struct path_info *pi
);
#endif

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package/uhttpd/src/uhttpd-lua.c Normal file
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/*
* uhttpd - Tiny single-threaded httpd - Lua handler
*
* Copyright (C) 2010 Jo-Philipp Wich <xm@subsignal.org>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "uhttpd.h"
#include "uhttpd-utils.h"
#include "uhttpd-lua.h"
static int uh_lua_recv(lua_State *L)
{
size_t length;
char buffer[UH_LIMIT_MSGHEAD];
ssize_t rlen = 0;
fd_set reader;
struct timeval timeout;
length = luaL_checknumber(L, 1);
if( (length > 0) && (length <= sizeof(buffer)) )
{
FD_ZERO(&reader);
FD_SET(fileno(stdin), &reader);
/* fail after 0.1s */
timeout.tv_sec = 0;
timeout.tv_usec = 100000;
/* check whether fd is readable */
if( select(fileno(stdin) + 1, &reader, NULL, NULL, &timeout) > 0 )
{
/* receive data */
rlen = read(fileno(stdin), buffer, length);
lua_pushnumber(L, rlen);
if( rlen > 0 )
{
lua_pushlstring(L, buffer, rlen);
return 2;
}
return 1;
}
/* no, timeout and actually no data */
lua_pushnumber(L, -2);
return 1;
}
/* parameter error */
lua_pushnumber(L, -3);
return 1;
}
static int uh_lua_send_common(lua_State *L, int chunked)
{
size_t length;
const char *buffer;
char chunk[16];
ssize_t slen = 0;
buffer = luaL_checklstring(L, 1, &length);
if( chunked )
{
if( length > 0 )
{
snprintf(chunk, sizeof(chunk), "%X\r\n", length);
slen = write(fileno(stdout), chunk, strlen(chunk));
slen += write(fileno(stdout), buffer, length);
slen += write(fileno(stdout), "\r\n", 2);
}
else
{
slen = write(fileno(stdout), "0\r\n\r\n", 5);
}
}
else
{
slen = write(fileno(stdout), buffer, length);
}
lua_pushnumber(L, slen);
return 1;
}
static int uh_lua_send(lua_State *L)
{
return uh_lua_send_common(L, 0);
}
static int uh_lua_sendc(lua_State *L)
{
return uh_lua_send_common(L, 1);
}
static int uh_lua_urldecode(lua_State *L)
{
size_t inlen, outlen;
const char *inbuf;
char outbuf[UH_LIMIT_MSGHEAD];
inbuf = luaL_checklstring(L, 1, &inlen);
outlen = uh_urldecode(outbuf, sizeof(outbuf), inbuf, inlen);
lua_pushlstring(L, outbuf, outlen);
return 1;
}
lua_State * uh_lua_init(const char *handler)
{
lua_State *L = lua_open();
const char *err_str = NULL;
/* Load standard libaries */
luaL_openlibs(L);
/* build uhttpd api table */
lua_newtable(L);
/* register global send and receive functions */
lua_pushcfunction(L, uh_lua_recv);
lua_setfield(L, -2, "recv");
lua_pushcfunction(L, uh_lua_send);
lua_setfield(L, -2, "send");
lua_pushcfunction(L, uh_lua_sendc);
lua_setfield(L, -2, "sendc");
lua_pushcfunction(L, uh_lua_urldecode);
lua_setfield(L, -2, "urldecode");
/* _G.uhttpd = { ... } */
lua_setfield(L, LUA_GLOBALSINDEX, "uhttpd");
/* load Lua handler */
switch( luaL_loadfile(L, handler) )
{
case LUA_ERRSYNTAX:
fprintf(stderr,
"Lua handler contains syntax errors, unable to continue\n");
exit(1);
case LUA_ERRMEM:
fprintf(stderr,
"Lua handler ran out of memory, unable to continue\n");
exit(1);
case LUA_ERRFILE:
fprintf(stderr,
"Lua cannot open the handler script, unable to continue\n");
exit(1);
default:
/* compile Lua handler */
switch( lua_pcall(L, 0, 0, 0) )
{
case LUA_ERRRUN:
err_str = luaL_checkstring(L, -1);
fprintf(stderr,
"Lua handler had runtime error, unable to continue\n"
"Error: %s\n", err_str
);
exit(1);
case LUA_ERRMEM:
err_str = luaL_checkstring(L, -1);
fprintf(stderr,
"Lua handler ran out of memory, unable to continue\n"
"Error: %s\n", err_str
);
exit(1);
default:
/* test handler function */
lua_getglobal(L, UH_LUA_CALLBACK);
if( ! lua_isfunction(L, -1) )
{
fprintf(stderr,
"Lua handler provides no " UH_LUA_CALLBACK "(), unable to continue\n");
exit(1);
}
lua_pop(L, 1);
break;
}
break;
}
return L;
}
void uh_lua_request(struct client *cl, struct http_request *req, lua_State *L)
{
int i, data_sent;
int content_length = 0;
int buflen = 0;
int fd_max = 0;
char *query_string;
const char *prefix = cl->server->conf->lua_prefix;
const char *err_str = NULL;
int rfd[2] = { 0, 0 };
int wfd[2] = { 0, 0 };
char buf[UH_LIMIT_MSGHEAD];
pid_t child;
fd_set reader;
fd_set writer;
struct sigaction sa;
struct timeval timeout;
/* spawn pipes for me->child, child->me */
if( (pipe(rfd) < 0) || (pipe(wfd) < 0) )
{
uh_http_sendhf(cl, 500, "Internal Server Error",
"Failed to create pipe: %s", strerror(errno));
if( rfd[0] > 0 ) close(rfd[0]);
if( rfd[1] > 0 ) close(rfd[1]);
if( wfd[0] > 0 ) close(wfd[0]);
if( wfd[1] > 0 ) close(wfd[1]);
return;
}
switch( (child = fork()) )
{
case -1:
uh_http_sendhf(cl, 500, "Internal Server Error",
"Failed to fork child: %s", strerror(errno));
break;
case 0:
/* restore SIGTERM */
sa.sa_flags = 0;
sa.sa_handler = SIG_DFL;
sigemptyset(&sa.sa_mask);
sigaction(SIGTERM, &sa, NULL);
/* close loose pipe ends */
close(rfd[0]);
close(wfd[1]);
/* patch stdout and stdin to pipes */
dup2(rfd[1], 1);
dup2(wfd[0], 0);
/* put handler callback on stack */
lua_getglobal(L, UH_LUA_CALLBACK);
/* build env table */
lua_newtable(L);
/* request method */
switch(req->method)
{
case UH_HTTP_MSG_GET:
lua_pushstring(L, "GET");
break;
case UH_HTTP_MSG_HEAD:
lua_pushstring(L, "HEAD");
break;
case UH_HTTP_MSG_POST:
lua_pushstring(L, "POST");
break;
}
lua_setfield(L, -2, "REQUEST_METHOD");
/* request url */
lua_pushstring(L, req->url);
lua_setfield(L, -2, "REQUEST_URI");
/* script name */
lua_pushstring(L, cl->server->conf->lua_prefix);
lua_setfield(L, -2, "SCRIPT_NAME");
/* query string, path info */
if( (query_string = strchr(req->url, '?')) != NULL )
{
lua_pushstring(L, query_string + 1);
lua_setfield(L, -2, "QUERY_STRING");
if( (int)(query_string - req->url) > strlen(prefix) )
{
lua_pushlstring(L,
&req->url[strlen(prefix)],
(int)(query_string - req->url) - strlen(prefix)
);
lua_setfield(L, -2, "PATH_INFO");
}
}
else if( strlen(req->url) > strlen(prefix) )
{
lua_pushstring(L, &req->url[strlen(prefix)]);
lua_setfield(L, -2, "PATH_INFO");
}
/* http protcol version */
lua_pushnumber(L, floor(req->version * 10) / 10);
lua_setfield(L, -2, "HTTP_VERSION");
if( req->version > 1.0 )
lua_pushstring(L, "HTTP/1.1");
else
lua_pushstring(L, "HTTP/1.0");
lua_setfield(L, -2, "SERVER_PROTOCOL");
/* address information */
lua_pushstring(L, sa_straddr(&cl->peeraddr));
lua_setfield(L, -2, "REMOTE_ADDR");
lua_pushinteger(L, sa_port(&cl->peeraddr));
lua_setfield(L, -2, "REMOTE_PORT");
lua_pushstring(L, sa_straddr(&cl->servaddr));
lua_setfield(L, -2, "SERVER_ADDR");
lua_pushinteger(L, sa_port(&cl->servaddr));
lua_setfield(L, -2, "SERVER_PORT");
/* essential env vars */
foreach_header(i, req->headers)
{
if( !strcasecmp(req->headers[i], "Content-Length") )
{
lua_pushnumber(L, atoi(req->headers[i+1]));
lua_setfield(L, -2, "CONTENT_LENGTH");
}
else if( !strcasecmp(req->headers[i], "Content-Type") )
{
lua_pushstring(L, req->headers[i+1]);
lua_setfield(L, -2, "CONTENT_TYPE");
}
}
/* misc. headers */
lua_newtable(L);
foreach_header(i, req->headers)
{
if( strcasecmp(req->headers[i], "Content-Length") &&
strcasecmp(req->headers[i], "Content-Type")
) {
lua_pushstring(L, req->headers[i+1]);
lua_setfield(L, -2, req->headers[i]);
}
}
lua_setfield(L, -2, "headers");
/* call */
switch( lua_pcall(L, 1, 0, 0) )
{
case LUA_ERRMEM:
case LUA_ERRRUN:
err_str = luaL_checkstring(L, -1);
if( ! err_str )
err_str = "Unknown error";
printf(
"HTTP/%.1f 500 Internal Server Error\r\n"
"Connection: close\r\n"
"Content-Type: text/plain\r\n"
"Content-Length: %i\r\n\r\n"
"Lua raised a runtime error:\n %s\n",
req->version, 31 + strlen(err_str), err_str
);
break;
default:
break;
}
close(wfd[0]);
close(rfd[1]);
exit(0);
break;
/* parent; handle I/O relaying */
default:
/* close unneeded pipe ends */
close(rfd[1]);
close(wfd[0]);
/* max watch fd */
fd_max = max(rfd[0], wfd[1]) + 1;
/* find content length */
if( req->method == UH_HTTP_MSG_POST )
{
foreach_header(i, req->headers)
{
if( ! strcasecmp(req->headers[i], "Content-Length") )
{
content_length = atoi(req->headers[i+1]);
break;
}
}
}
#define ensure(x) \
do { if( x < 0 ) goto out; } while(0)
data_sent = 0;
/* I/O loop, watch our pipe ends and dispatch child reads/writes from/to socket */
while( 1 )
{
FD_ZERO(&reader);
FD_ZERO(&writer);
FD_SET(rfd[0], &reader);
FD_SET(wfd[1], &writer);
timeout.tv_sec = 15;
timeout.tv_usec = 0;
/* wait until we can read or write or both */
if( select(fd_max, &reader, (content_length > -1) ? &writer : NULL, NULL, &timeout) > 0 )
{
/* ready to write to Lua child */
if( FD_ISSET(wfd[1], &writer) )
{
/* there is unread post data waiting */
if( content_length > 0 )
{
/* read it from socket ... */
if( (buflen = uh_tcp_recv(cl, buf, min(content_length, sizeof(buf)))) > 0 )
{
/* ... and write it to child's stdin */
if( write(wfd[1], buf, buflen) < 0 )
perror("write()");
content_length -= buflen;
}
/* unexpected eof! */
else
{
if( write(wfd[1], "", 0) < 0 )
perror("write()");
content_length = 0;
}
}
/* there is no more post data, close pipe to child's stdin */
else if( content_length > -1 )
{
close(wfd[1]);
content_length = -1;
}
}
/* ready to read from Lua child */
if( FD_ISSET(rfd[0], &reader) )
{
/* read data from child ... */
if( (buflen = read(rfd[0], buf, sizeof(buf))) > 0 )
{
/* pass through buffer to socket */
ensure(uh_tcp_send(cl, buf, buflen));
data_sent = 1;
}
/* looks like eof from child */
else
{
/* error? */
if( ! data_sent )
uh_http_sendhf(cl, 500, "Internal Server Error",
"The Lua child did not produce any response");
break;
}
}
}
/* no activity for 15 seconds... looks dead */
else
{
ensure(uh_http_sendhf(cl, 504, "Gateway Timeout",
"The Lua handler took too long to produce a response"));
break;
}
}
out:
close(rfd[0]);
close(wfd[1]);
if( !kill(child, 0) )
kill(child, SIGTERM);
break;
}
}
void uh_lua_close(lua_State *L)
{
lua_close(L);
}

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/*
* uhttpd - Tiny single-threaded httpd - Lua header
*
* Copyright (C) 2010 Jo-Philipp Wich <xm@subsignal.org>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef _UHTTPD_LUA_
#include <math.h> /* floor() */
#include <errno.h>
#include <lua.h>
#include <lauxlib.h>
#include <lualib.h>
#define UH_LUA_CALLBACK "handle_request"
#define UH_LUA_ERR_TIMEOUT -1
#define UH_LUA_ERR_TOOBIG -2
#define UH_LUA_ERR_PARAM -3
lua_State * uh_lua_init();
void uh_lua_request(
struct client *cl, struct http_request *req, lua_State *L
);
void uh_lua_close(lua_State *L);
#endif

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/*
* uhttpd - Tiny single-threaded httpd - MIME type definitions
*
* Copyright (C) 2010 Jo-Philipp Wich <xm@subsignal.org>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef _UHTTPD_MIMETYPES_
static struct mimetype uh_mime_types[] = {
{ "txt", "text/plain" },
{ "log", "text/plain" },
{ "js", "text/javascript" },
{ "css", "text/css" },
{ "htm", "text/html" },
{ "html", "text/html" },
{ "diff", "text/x-patch" },
{ "patch", "text/x-patch" },
{ "c", "text/x-csrc" },
{ "h", "text/x-chdr" },
{ "o", "text/x-object" },
{ "ko", "text/x-object" },
{ "bmp", "image/bmp" },
{ "gif", "image/gif" },
{ "png", "image/png" },
{ "jpg", "image/jpeg" },
{ "jpeg", "image/jpeg" },
{ "svg", "image/svg+xml" },
{ "zip", "application/zip" },
{ "pdf", "application/pdf" },
{ "xml", "application/xml" },
{ "xsl", "application/xml" },
{ "doc", "application/msword" },
{ "ppt", "application/vnd.ms-powerpoint" },
{ "xls", "application/vnd.ms-excel" },
{ "odt", "application/vnd.oasis.opendocument.text" },
{ "odp", "application/vnd.oasis.opendocument.presentation" },
{ "pl", "application/x-perl" },
{ "sh", "application/x-shellscript" },
{ "php", "application/x-php" },
{ "deb", "application/x-deb" },
{ "iso", "application/x-cd-image" },
{ "tgz", "application/x-compressed-tar" },
{ "gz", "application/x-gzip" },
{ "bz2", "application/x-bzip" },
{ "tar", "application/x-tar" },
{ "rar", "application/x-rar-compressed" },
{ "mp3", "audio/mpeg" },
{ "ogg", "audio/x-vorbis+ogg" },
{ "wav", "audio/x-wav" },
{ "mpg", "video/mpeg" },
{ "mpeg", "video/mpeg" },
{ "avi", "video/x-msvideo" },
{ "README", "text/plain" },
{ "log", "text/plain" },
{ "cfg", "text/plain" },
{ "conf", "text/plain" },
{ NULL, NULL }
};
#endif

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/*
* uhttpd - Tiny single-threaded httpd - TLS helper
*
* Copyright (C) 2010 Jo-Philipp Wich <xm@subsignal.org>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "uhttpd.h"
#include "uhttpd-tls.h"
#include "uhttpd-utils.h"
SSL_CTX * uh_tls_ctx_init()
{
SSL_CTX *c = NULL;
SSL_load_error_strings();
SSL_library_init();
if( (c = SSL_CTX_new(TLSv1_server_method())) != NULL )
SSL_CTX_set_verify(c, SSL_VERIFY_NONE, NULL);
return c;
}
int uh_tls_ctx_cert(SSL_CTX *c, const char *file)
{
return SSL_CTX_use_certificate_file(c, file, SSL_FILETYPE_ASN1);
}
int uh_tls_ctx_key(SSL_CTX *c, const char *file)
{
return SSL_CTX_use_PrivateKey_file(c, file, SSL_FILETYPE_ASN1);
}
void uh_tls_ctx_free(struct listener *l)
{
SSL_CTX_free(l->tls);
}
void uh_tls_client_accept(struct client *c)
{
if( c->server && c->server->tls )
{
c->tls = SSL_new(c->server->tls);
SSL_set_fd(c->tls, c->socket);
}
}
int uh_tls_client_recv(struct client *c, void *buf, int len)
{
return SSL_read(c->tls, buf, len);
}
int uh_tls_client_send(struct client *c, void *buf, int len)
{
return SSL_write(c->tls, buf, len);
}
void uh_tls_client_close(struct client *c)
{
if( c->tls )
{
SSL_shutdown(c->tls);
SSL_free(c->tls);
c->tls = NULL;
}
}

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/*
* uhttpd - Tiny single-threaded httpd - TLS header
*
* Copyright (C) 2010 Jo-Philipp Wich <xm@subsignal.org>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef _UHTTPD_TLS_
#include <openssl/ssl.h>
SSL_CTX * uh_tls_ctx_init();
int uh_tls_ctx_cert(SSL_CTX *c, const char *file);
int uh_tls_ctx_key(SSL_CTX *c, const char *file);
void uh_tls_ctx_free(struct listener *l);
void uh_tls_client_accept(struct client *c);
int uh_tls_client_recv(struct client *c, void *buf, int len);
int uh_tls_client_send(struct client *c, void *buf, int len);
void uh_tls_client_close(struct client *c);
#endif

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/*
* uhttpd - Tiny single-threaded httpd - Utility functions
*
* Copyright (C) 2010 Jo-Philipp Wich <xm@subsignal.org>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#define _XOPEN_SOURCE 500 /* crypt() */
#define _BSD_SOURCE /* strcasecmp(), strncasecmp() */
#include "uhttpd.h"
#include "uhttpd-utils.h"
#ifdef HAVE_TLS
#include "uhttpd-tls.h"
#endif
static char *uh_index_files[] = {
"index.html",
"index.htm",
"default.html",
"default.htm"
};
const char * sa_straddr(void *sa)
{
static char str[INET6_ADDRSTRLEN];
struct sockaddr_in *v4 = (struct sockaddr_in *)sa;
struct sockaddr_in6 *v6 = (struct sockaddr_in6 *)sa;
if( v4->sin_family == AF_INET )
return inet_ntop(AF_INET, &(v4->sin_addr), str, sizeof(str));
else
return inet_ntop(AF_INET6, &(v6->sin6_addr), str, sizeof(str));
}
const char * sa_strport(void *sa)
{
static char str[6];
snprintf(str, sizeof(str), "%i", sa_port(sa));
return str;
}
int sa_port(void *sa)
{
return ntohs(((struct sockaddr_in6 *)sa)->sin6_port);
}
/* Simple strstr() like function that takes len arguments for both haystack and needle. */
char *strfind(char *haystack, int hslen, const char *needle, int ndlen)
{
int match = 0;
int i, j;
for( i = 0; i < hslen; i++ )
{
if( haystack[i] == needle[0] )
{
match = ((ndlen == 1) || ((i + ndlen) <= hslen));
for( j = 1; (j < ndlen) && ((i + j) < hslen); j++ )
{
if( haystack[i+j] != needle[j] )
{
match = 0;
break;
}
}
if( match )
return &haystack[i];
}
}
return NULL;
}
int uh_tcp_send(struct client *cl, const char *buf, int len)
{
fd_set writer;
struct timeval timeout;
FD_ZERO(&writer);
FD_SET(cl->socket, &writer);
timeout.tv_sec = 0;
timeout.tv_usec = 500000;
if( select(cl->socket + 1, NULL, &writer, NULL, &timeout) > 0 )
{
#ifdef HAVE_TLS
if( cl->tls )
return cl->server->conf->tls_send(cl, (void *)buf, len);
else
#endif
return send(cl->socket, buf, len, 0);
}
return -1;
}
int uh_tcp_peek(struct client *cl, char *buf, int len)
{
int sz = uh_tcp_recv(cl, buf, len);
/* store received data in peek buffer */
if( sz > 0 )
{
cl->peeklen = sz;
memcpy(cl->peekbuf, buf, sz);
}
return sz;
}
int uh_tcp_recv(struct client *cl, char *buf, int len)
{
int sz = 0;
int rsz = 0;
/* first serve data from peek buffer */
if( cl->peeklen > 0 )
{
sz = min(cl->peeklen, len);
len -= sz; cl->peeklen -= sz;
memcpy(buf, cl->peekbuf, sz);
memmove(cl->peekbuf, &cl->peekbuf[sz], cl->peeklen);
}
/* caller wants more */
if( len > 0 )
{
#ifdef HAVE_TLS
if( cl->tls )
rsz = cl->server->conf->tls_recv(cl, (void *)&buf[sz], len);
else
#endif
rsz = recv(cl->socket, (void *)&buf[sz], len, 0);
if( (sz == 0) || (rsz > 0) )
sz += rsz;
}
return sz;
}
#define ensure(x) \
do { if( x < 0 ) return -1; } while(0)
int uh_http_sendhf(struct client *cl, int code, const char *summary, const char *fmt, ...)
{
va_list ap;
char buffer[UH_LIMIT_MSGHEAD];
int len;
len = snprintf(buffer, sizeof(buffer),
"HTTP/1.1 %03i %s\r\n"
"Connection: close\r\n"
"Content-Type: text/plain\r\n"
"Transfer-Encoding: chunked\r\n\r\n",
code, summary
);
ensure(uh_tcp_send(cl, buffer, len));
va_start(ap, fmt);
len = vsnprintf(buffer, sizeof(buffer), fmt, ap);
va_end(ap);
ensure(uh_http_sendc(cl, buffer, len));
ensure(uh_http_sendc(cl, NULL, 0));
return 0;
}
int uh_http_sendc(struct client *cl, const char *data, int len)
{
char chunk[8];
int clen;
if( len == -1 )
len = strlen(data);
if( len > 0 )
{
clen = snprintf(chunk, sizeof(chunk), "%X\r\n", len);
ensure(uh_tcp_send(cl, chunk, clen));
ensure(uh_tcp_send(cl, data, len));
ensure(uh_tcp_send(cl, "\r\n", 2));
}
else
{
ensure(uh_tcp_send(cl, "0\r\n\r\n", 5));
}
return 0;
}
int uh_http_sendf(
struct client *cl, struct http_request *req, const char *fmt, ...
) {
va_list ap;
char buffer[UH_LIMIT_MSGHEAD];
int len;
va_start(ap, fmt);
len = vsnprintf(buffer, sizeof(buffer), fmt, ap);
va_end(ap);
if( (req != NULL) && (req->version > 1.0) )
ensure(uh_http_sendc(cl, buffer, len));
else if( len > 0 )
ensure(uh_tcp_send(cl, buffer, len));
return 0;
}
int uh_http_send(
struct client *cl, struct http_request *req, const char *buf, int len
) {
if( len < 0 )
len = strlen(buf);
if( (req != NULL) && (req->version > 1.0) )
ensure(uh_http_sendc(cl, buf, len));
else if( len > 0 )
ensure(uh_tcp_send(cl, buf, len));
return 0;
}
int uh_urldecode(char *buf, int blen, const char *src, int slen)
{
int i;
int len = 0;
#define hex(x) \
(((x) <= '9') ? ((x) - '0') : \
(((x) <= 'F') ? ((x) - 'A' + 10) : \
((x) - 'a' + 10)))
for( i = 0; (i <= slen) && (i <= blen); i++ )
{
if( src[i] == '%' )
{
if( ((i+2) <= slen) && isxdigit(src[i+1]) && isxdigit(src[i+2]) )
{
buf[len++] = (char)(16 * hex(src[i+1]) + hex(src[i+2]));
i += 2;
}
else
{
buf[len++] = '%';
}
}
else
{
buf[len++] = src[i];
}
}
return len;
}
int uh_urlencode(char *buf, int blen, const char *src, int slen)
{
int i;
int len = 0;
const char hex[] = "0123456789abcdef";
for( i = 0; (i <= slen) && (i <= blen); i++ )
{
if( isalnum(src[i]) || (src[i] == '-') || (src[i] == '_') ||
(src[i] == '.') || (src[i] == '~') )
{
buf[len++] = src[i];
}
else if( (len+3) <= blen )
{
buf[len++] = '%';
buf[len++] = hex[(src[i] >> 4) & 15];
buf[len++] = hex[(src[i] & 15) & 15];
}
else
{
break;
}
}
return len;
}
int uh_b64decode(char *buf, int blen, const unsigned char *src, int slen)
{
int i = 0;
int len = 0;
unsigned int cin = 0;
unsigned int cout = 0;
for( i = 0; (i <= slen) && (src[i] != 0); i++ )
{
cin = src[i];
if( (cin >= '0') && (cin <= '9') )
cin = cin - '0' + 52;
else if( (cin >= 'A') && (cin <= 'Z') )
cin = cin - 'A';
else if( (cin >= 'a') && (cin <= 'z') )
cin = cin - 'a' + 26;
else if( cin == '+' )
cin = 62;
else if( cin == '/' )
cin = 63;
else if( cin == '=' )
cin = 0;
else
continue;
cout = (cout << 6) | cin;
if( (i % 4) == 3 )
{
if( (len + 3) < blen )
{
buf[len++] = (char)(cout >> 16);
buf[len++] = (char)(cout >> 8);
buf[len++] = (char)(cout);
}
else
{
break;
}
}
}
buf[len++] = 0;
return len;
}
struct path_info * uh_path_lookup(struct client *cl, const char *url)
{
static char path_phys[PATH_MAX];
static char path_info[PATH_MAX];
static struct path_info p;
char buffer[UH_LIMIT_MSGHEAD];
char *docroot = cl->server->conf->docroot;
char *pathptr = NULL;
int i = 0;
struct stat s;
memset(path_phys, 0, sizeof(path_phys));
memset(path_info, 0, sizeof(path_info));
memset(buffer, 0, sizeof(buffer));
memset(&p, 0, sizeof(p));
/* copy docroot */
memcpy(buffer, docroot,
min(strlen(docroot), sizeof(buffer) - 1));
/* separate query string from url */
if( (pathptr = strchr(url, '?')) != NULL )
{
p.query = pathptr[1] ? pathptr + 1 : NULL;
/* urldecode component w/o query */
if( pathptr > url )
uh_urldecode(
&buffer[strlen(docroot)],
sizeof(buffer) - strlen(docroot) - 1,
url, (int)(pathptr - url) - 1
);
}
/* no query string, decode all of url */
else
{
uh_urldecode(
&buffer[strlen(docroot)],
sizeof(buffer) - strlen(docroot) - 1,
url, strlen(url)
);
}
/* create canon path */
for( i = strlen(buffer); i >= 0; i-- )
{
if( (buffer[i] == 0) || (buffer[i] == '/') )
{
memset(path_info, 0, sizeof(path_info));
memcpy(path_info, buffer, min(i + 1, sizeof(path_info) - 1));
if( realpath(path_info, path_phys) )
{
memset(path_info, 0, sizeof(path_info));
memcpy(path_info, &buffer[i],
min(strlen(buffer) - i, sizeof(path_info) - 1));
break;
}
}
}
/* check whether found path is within docroot */
if( strncmp(path_phys, docroot, strlen(docroot)) ||
((path_phys[strlen(docroot)] != 0) &&
(path_phys[strlen(docroot)] != '/'))
) {
return NULL;
}
/* test current path */
if( ! stat(path_phys, &p.stat) )
{
/* is a regular file */
if( p.stat.st_mode & S_IFREG )
{
p.root = docroot;
p.phys = path_phys;
p.name = &path_phys[strlen(docroot)];
p.info = path_info[0] ? path_info : NULL;
}
/* is a directory */
else if( (p.stat.st_mode & S_IFDIR) && !strlen(path_info) )
{
/* ensure trailing slash */
if( path_phys[strlen(path_phys)-1] != '/' )
path_phys[strlen(path_phys)] = '/';
/* try to locate index file */
memset(buffer, 0, sizeof(buffer));
memcpy(buffer, path_phys, sizeof(buffer));
pathptr = &buffer[strlen(buffer)];
for( i = 0; i < array_size(uh_index_files); i++ )
{
strncat(buffer, uh_index_files[i], sizeof(buffer));
if( !stat(buffer, &s) && (s.st_mode & S_IFREG) )
{
memcpy(path_phys, buffer, sizeof(path_phys));
memcpy(&p.stat, &s, sizeof(p.stat));
break;
}
*pathptr = 0;
}
p.root = docroot;
p.phys = path_phys;
p.name = &path_phys[strlen(docroot)];
}
}
return p.phys ? &p : NULL;
}
static char uh_realms[UH_LIMIT_AUTHREALMS * sizeof(struct auth_realm)] = { 0 };
static int uh_realm_count = 0;
struct auth_realm * uh_auth_add(char *path, char *user, char *pass)
{
struct auth_realm *new = NULL;
struct passwd *pwd;
struct spwd *spwd;
if( uh_realm_count < UH_LIMIT_AUTHREALMS )
{
new = (struct auth_realm *)
&uh_realms[uh_realm_count * sizeof(struct auth_realm)];
memset(new, 0, sizeof(struct auth_realm));
memcpy(new->path, path,
min(strlen(path), sizeof(new->path) - 1));
memcpy(new->user, user,
min(strlen(user), sizeof(new->user) - 1));
/* given password refers to a passwd entry */
if( (strlen(pass) > 3) && !strncmp(pass, "$p$", 3) )
{
/* try to resolve shadow entry */
if( ((spwd = getspnam(&pass[3])) != NULL) && spwd->sp_pwdp )
{
memcpy(new->pass, spwd->sp_pwdp,
min(strlen(spwd->sp_pwdp), sizeof(new->pass) - 1));
}
/* try to resolve passwd entry */
else if( ((pwd = getpwnam(&pass[3])) != NULL) && pwd->pw_passwd &&
(pwd->pw_passwd[0] != '!') && (pwd->pw_passwd[0] != 0)
) {
memcpy(new->pass, pwd->pw_passwd,
min(strlen(pwd->pw_passwd), sizeof(new->pass) - 1));
}
}
/* ordinary pwd */
else
{
memcpy(new->pass, pass,
min(strlen(pass), sizeof(new->pass) - 1));
}
uh_realm_count++;
}
return new;
}
int uh_auth_check(
struct client *cl, struct http_request *req, struct path_info *pi
) {
int i, plen, rlen, protected;
char buffer[UH_LIMIT_MSGHEAD];
char *user = NULL;
char *pass = NULL;
struct auth_realm *realm = NULL;
plen = strlen(pi->name);
protected = 0;
/* check whether at least one realm covers the requested url */
for( i = 0; i < uh_realm_count; i++ )
{
realm = (struct auth_realm *)
&uh_realms[i * sizeof(struct auth_realm)];
rlen = strlen(realm->path);
if( (plen >= rlen) && !strncasecmp(pi->name, realm->path, rlen) )
{
req->realm = realm;
protected = 1;
break;
}
}
/* requested resource is covered by a realm */
if( protected )
{
/* try to get client auth info */
foreach_header(i, req->headers)
{
if( !strcasecmp(req->headers[i], "Authorization") &&
(strlen(req->headers[i+1]) > 6) &&
!strncasecmp(req->headers[i+1], "Basic ", 6)
) {
memset(buffer, 0, sizeof(buffer));
uh_b64decode(buffer, sizeof(buffer) - 1,
(unsigned char *) &req->headers[i+1][6],
strlen(req->headers[i+1]) - 6);
if( (pass = strchr(buffer, ':')) != NULL )
{
user = buffer;
*pass++ = 0;
}
break;
}
}
/* have client auth */
if( user && pass )
{
/* find matching realm */
for( i = 0, realm = NULL; i < uh_realm_count; i++ )
{
realm = (struct auth_realm *)
&uh_realms[i * sizeof(struct auth_realm)];
rlen = strlen(realm->path);
if( (plen >= rlen) &&
!strncasecmp(pi->name, realm->path, rlen) &&
!strcmp(user, realm->user)
) {
req->realm = realm;
break;
}
realm = NULL;
}
/* found a realm matching the username */
if( realm )
{
/* is a crypt passwd */
if( realm->pass[0] == '$' )
pass = crypt(pass, realm->pass);
/* check user pass */
if( !strcmp(pass, realm->pass) )
return 1;
}
}
/* 401 */
uh_http_sendf(cl, NULL,
"HTTP/%.1f 401 Authorization Required\r\n"
"WWW-Authenticate: Basic realm=\"%s\"\r\n"
"Content-Type: text/plain\r\n"
"Content-Length: 23\r\n\r\n"
"Authorization Required\n",
req->version, cl->server->conf->realm
);
return 0;
}
return 1;
}
static char uh_listeners[UH_LIMIT_LISTENERS * sizeof(struct listener)] = { 0 };
static char uh_clients[UH_LIMIT_CLIENTS * sizeof(struct client)] = { 0 };
static int uh_listener_count = 0;
static int uh_client_count = 0;
struct listener * uh_listener_add(int sock, struct config *conf)
{
struct listener *new = NULL;
socklen_t sl;
if( uh_listener_count < UH_LIMIT_LISTENERS )
{
new = (struct listener *)
&uh_listeners[uh_listener_count * sizeof(struct listener)];
new->socket = sock;
new->conf = conf;
/* get local endpoint addr */
sl = sizeof(struct sockaddr_in6);
memset(&(new->addr), 0, sl);
getsockname(sock, (struct sockaddr *) &(new->addr), &sl);
uh_listener_count++;
}
return new;
}
struct listener * uh_listener_lookup(int sock)
{
struct listener *cur = NULL;
int i;
for( i = 0; i < uh_listener_count; i++ )
{
cur = (struct listener *) &uh_listeners[i * sizeof(struct listener)];
if( cur->socket == sock )
return cur;
}
return NULL;
}
struct client * uh_client_add(int sock, struct listener *serv)
{
struct client *new = NULL;
socklen_t sl;
if( uh_client_count < UH_LIMIT_CLIENTS )
{
new = (struct client *)
&uh_clients[uh_client_count * sizeof(struct client)];
new->socket = sock;
new->server = serv;
/* get remote endpoint addr */
sl = sizeof(struct sockaddr_in6);
memset(&(new->peeraddr), 0, sl);
getpeername(sock, (struct sockaddr *) &(new->peeraddr), &sl);
/* get local endpoint addr */
sl = sizeof(struct sockaddr_in6);
memset(&(new->servaddr), 0, sl);
getsockname(sock, (struct sockaddr *) &(new->servaddr), &sl);
uh_client_count++;
}
return new;
}
struct client * uh_client_lookup(int sock)
{
struct client *cur = NULL;
int i;
for( i = 0; i < uh_client_count; i++ )
{
cur = (struct client *) &uh_clients[i * sizeof(struct client)];
if( cur->socket == sock )
return cur;
}
return NULL;
}
void uh_client_remove(int sock)
{
struct client *del = uh_client_lookup(sock);
if( del )
{
memmove(del, del + 1,
sizeof(uh_clients) - (int)((char *)del - uh_clients) - sizeof(struct client));
uh_client_count--;
}
}

98
package/uhttpd/src/uhttpd-utils.h Normal file
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@ -0,0 +1,98 @@
/*
* uhttpd - Tiny single-threaded httpd - Utility header
*
* Copyright (C) 2010 Jo-Philipp Wich <xm@subsignal.org>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef _UHTTPD_UTILS_
#include <stdarg.h>
#include <fcntl.h>
#include <pwd.h>
#include <shadow.h>
#include <sys/stat.h>
#define min(x, y) (((x) < (y)) ? (x) : (y))
#define max(x, y) (((x) > (y)) ? (x) : (y))
#define array_size(x) \
(sizeof(x) / sizeof(x[0]))
#define foreach_header(i, h) \
for( i = 0; (i + 1) < (sizeof(h) / sizeof(h[0])) && h[i]; i += 2 )
struct path_info {
char *root;
char *phys;
char *name;
char *info;
char *query;
struct stat stat;
};
const char * sa_straddr(void *sa);
const char * sa_strport(void *sa);
int sa_port(void *sa);
char *strfind(char *haystack, int hslen, const char *needle, int ndlen);
int uh_tcp_send(struct client *cl, const char *buf, int len);
int uh_tcp_peek(struct client *cl, char *buf, int len);
int uh_tcp_recv(struct client *cl, char *buf, int len);
int uh_http_sendhf(
struct client *cl, int code, const char *summary,
const char *fmt, ...
);
#define uh_http_response(cl, code, message) \
uh_http_sendhf(cl, code, message, message)
int uh_http_sendc(struct client *cl, const char *data, int len);
int uh_http_sendf(
struct client *cl, struct http_request *req,
const char *fmt, ...
);
int uh_http_send(
struct client *cl, struct http_request *req,
const char *buf, int len
);
int uh_urldecode(char *buf, int blen, const char *src, int slen);
int uh_urlencode(char *buf, int blen, const char *src, int slen);
int uh_b64decode(char *buf, int blen, const unsigned char *src, int slen);
struct auth_realm * uh_auth_add(char *path, char *user, char *pass);
int uh_auth_check(
struct client *cl, struct http_request *req, struct path_info *pi
);
struct path_info * uh_path_lookup(struct client *cl, const char *url);
struct listener * uh_listener_add(int sock, struct config *conf);
struct listener * uh_listener_lookup(int sock);
struct client * uh_client_add(int sock, struct listener *serv);
struct client * uh_client_lookup(int sock);
void uh_client_remove(int sock);
#endif

899
package/uhttpd/src/uhttpd.c Normal file
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@ -0,0 +1,899 @@
/*
* uhttpd - Tiny single-threaded httpd - Main component
*
* Copyright (C) 2010 Jo-Philipp Wich <xm@subsignal.org>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#define _XOPEN_SOURCE 500 /* crypt() */
#include "uhttpd.h"
#include "uhttpd-utils.h"
#include "uhttpd-file.h"
#ifdef HAVE_CGI
#include "uhttpd-cgi.h"
#endif
#ifdef HAVE_LUA
#include "uhttpd-lua.h"
#endif
#ifdef HAVE_TLS
#include "uhttpd-tls.h"
#endif
static int run = 1;
static void uh_sigterm(int sig)
{
run = 0;
}
static void uh_config_parse(const char *path)
{
FILE *c;
char line[512];
char *user = NULL;
char *pass = NULL;
char *eol = NULL;
if( (c = fopen(path ? path : "/etc/httpd.conf", "r")) != NULL )
{
memset(line, 0, sizeof(line));
while( fgets(line, sizeof(line) - 1, c) )
{
if( (line[0] == '/') && (strchr(line, ':') != NULL) )
{
if( !(user = strchr(line, ':')) || (*user++ = 0) ||
!(pass = strchr(user, ':')) || (*pass++ = 0) ||
!(eol = strchr(pass, '\n')) || (*eol++ = 0) )
continue;
if( !uh_auth_add(line, user, pass) )
{
fprintf(stderr,
"Can not manage more than %i basic auth realms, "
"will skip the rest\n", UH_LIMIT_AUTHREALMS
);
break;
}
}
}
fclose(c);
}
}
static int uh_socket_bind(
fd_set *serv_fds, int *max_fd, const char *host, const char *port,
struct addrinfo *hints, int do_tls, struct config *conf
) {
int sock = -1;
int yes = 1;
int status;
int bound = 0;
struct listener *l = NULL;
struct addrinfo *addrs = NULL, *p = NULL;
if( (status = getaddrinfo(host, port, hints, &addrs)) != 0 )
{
fprintf(stderr, "getaddrinfo(): %s\n", gai_strerror(status));
}
/* try to bind a new socket to each found address */
for( p = addrs; p; p = p->ai_next )
{
/* get the socket */
if( (sock = socket(p->ai_family, p->ai_socktype, p->ai_protocol)) == -1 )
{
perror("socket()");
goto error;
}
/* "address already in use" */
if( setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, &yes, sizeof(yes)) == -1 )
{
perror("setsockopt()");
goto error;
}
/* required to get parallel v4 + v6 working */
if( p->ai_family == AF_INET6 )
{
if( setsockopt(sock, IPPROTO_IPV6, IPV6_V6ONLY, &yes, sizeof(yes)) == -1 )
{
perror("setsockopt()");
goto error;
}
}
/* bind */
if( bind(sock, p->ai_addr, p->ai_addrlen) == -1 )
{
perror("bind()");
goto error;
}
/* listen */
if( listen(sock, UH_LIMIT_CLIENTS) == -1 )
{
perror("listen()");
goto error;
}
/* add listener to global list */
if( ! (l = uh_listener_add(sock, conf)) )
{
fprintf(stderr,
"uh_listener_add(): Can not create more than "
"%i listen sockets\n", UH_LIMIT_LISTENERS
);
goto error;
}
#ifdef HAVE_TLS
/* init TLS */
l->tls = do_tls ? conf->tls : NULL;
#endif
/* add socket to server fd set */
FD_SET(sock, serv_fds);
*max_fd = max(*max_fd, sock);
bound++;
continue;
error:
if( sock > 0 )
close(sock);
}
freeaddrinfo(addrs);
return bound;
}
static struct http_request * uh_http_header_parse(struct client *cl, char *buffer, int buflen)
{
char *method = &buffer[0];
char *path = NULL;
char *version = NULL;
char *headers = NULL;
char *hdrname = NULL;
char *hdrdata = NULL;
int i;
int hdrcount = 0;
static struct http_request req;
memset(&req, 0, sizeof(req));
/* terminate initial header line */
if( (headers = strfind(buffer, buflen, "\r\n", 2)) != NULL )
{
buffer[buflen-1] = 0;
*headers++ = 0;
*headers++ = 0;
/* find request path */
if( (path = strchr(buffer, ' ')) != NULL )
*path++ = 0;
/* find http version */
if( (path != NULL) && ((version = strchr(path, ' ')) != NULL) )
*version++ = 0;
/* check method */
if( strcmp(method, "GET") && strcmp(method, "HEAD") && strcmp(method, "POST") )
{
/* invalid method */
uh_http_response(cl, 405, "Method Not Allowed");
return NULL;
}
else
{
switch(method[0])
{
case 'G':
req.method = UH_HTTP_MSG_GET;
break;
case 'H':
req.method = UH_HTTP_MSG_HEAD;
break;
case 'P':
req.method = UH_HTTP_MSG_POST;
break;
}
}
/* check path */
if( !path || !strlen(path) )
{
/* malformed request */
uh_http_response(cl, 400, "Bad Request");
return NULL;
}
else
{
req.url = path;
}
/* check version */
if( strcmp(version, "HTTP/0.9") && strcmp(version, "HTTP/1.0") && strcmp(version, "HTTP/1.1") )
{
/* unsupported version */
uh_http_response(cl, 400, "Bad Request");
return NULL;
}
else
{
req.version = strtof(&version[5], NULL);
}
/* process header fields */
for( i = (int)(headers - buffer); i < buflen; i++ )
{
/* found eol and have name + value, push out header tuple */
if( hdrname && hdrdata && (buffer[i] == '\r' || buffer[i] == '\n') )
{
buffer[i] = 0;
/* store */
if( (hdrcount + 1) < array_size(req.headers) )
{
req.headers[hdrcount++] = hdrname;
req.headers[hdrcount++] = hdrdata;
hdrname = hdrdata = NULL;
}
/* too large */
else
{
uh_http_response(cl, 413, "Request Entity Too Large");
return NULL;
}
}
/* have name but no value and found a colon, start of value */
else if( hdrname && !hdrdata && ((i+2) < buflen) &&
(buffer[i] == ':') && (buffer[i+1] == ' ')
) {
buffer[i] = 0;
hdrdata = &buffer[i+2];
}
/* have no name and found [A-Z], start of name */
else if( !hdrname && isalpha(buffer[i]) && isupper(buffer[i]) )
{
hdrname = &buffer[i];
}
}
/* valid enough */
return &req;
}
/* Malformed request */
uh_http_response(cl, 400, "Bad Request");
return NULL;
}
static struct http_request * uh_http_header_recv(struct client *cl)
{
static char buffer[UH_LIMIT_MSGHEAD];
char *bufptr = &buffer[0];
char *idxptr = NULL;
struct timeval timeout;
fd_set reader;
ssize_t blen = sizeof(buffer)-1;
ssize_t rlen = 0;
memset(buffer, 0, sizeof(buffer));
while( blen > 0 )
{
FD_ZERO(&reader);
FD_SET(cl->socket, &reader);
/* fail after 0.1s */
timeout.tv_sec = 0;
timeout.tv_usec = 100000;
/* check whether fd is readable */
if( select(cl->socket + 1, &reader, NULL, NULL, &timeout) > 0 )
{
/* receive data */
rlen = uh_tcp_peek(cl, bufptr, blen);
if( rlen > 0 )
{
if( (idxptr = strfind(buffer, sizeof(buffer), "\r\n\r\n", 4)) )
{
blen -= uh_tcp_recv(cl, bufptr, (int)(idxptr - bufptr) + 4);
/* header read complete ... */
return uh_http_header_parse(cl, buffer, sizeof(buffer) - blen - 1);
}
else
{
rlen = uh_tcp_recv(cl, bufptr, rlen);
blen -= rlen;
bufptr += rlen;
}
}
else
{
/* invalid request (unexpected eof/timeout) */
uh_http_response(cl, 408, "Request Timeout");
return NULL;
}
}
else
{
/* invalid request (unexpected eof/timeout) */
uh_http_response(cl, 408, "Request Timeout");
return NULL;
}
}
/* request entity too large */
uh_http_response(cl, 413, "Request Entity Too Large");
return NULL;
}
static int uh_path_match(const char *prefix, const char *url)
{
if( (strstr(url, prefix) == url) &&
((prefix[strlen(prefix)-1] == '/') ||
(strlen(url) == strlen(prefix)) ||
(url[strlen(prefix)] == '/'))
) {
return 1;
}
return 0;
}
int main (int argc, char **argv)
{
#ifdef HAVE_LUA
/* Lua runtime */
lua_State *L = NULL;
#endif
/* master file descriptor list */
fd_set used_fds, serv_fds, read_fds;
/* working structs */
struct addrinfo hints;
struct http_request *req;
struct path_info *pin;
struct client *cl;
struct sigaction sa;
struct config conf;
/* maximum file descriptor number */
int new_fd, cur_fd, max_fd = 0;
int tls = 0;
int keys = 0;
int bound = 0;
int nofork = 0;
/* args */
char opt;
char bind[128];
char *port = NULL;
/* library handles */
void *tls_lib;
void *lua_lib;
/* clear the master and temp sets */
FD_ZERO(&used_fds);
FD_ZERO(&serv_fds);
FD_ZERO(&read_fds);
/* handle SIGPIPE, SIGCHILD */
sa.sa_flags = 0;
sigemptyset(&sa.sa_mask);
sa.sa_handler = SIG_IGN;
sigaction(SIGPIPE, &sa, NULL);
sigaction(SIGCHLD, &sa, NULL);
sa.sa_handler = uh_sigterm;
sigaction(SIGINT, &sa, NULL);
sigaction(SIGTERM, &sa, NULL);
/* prepare addrinfo hints */
memset(&hints, 0, sizeof(hints));
hints.ai_family = AF_UNSPEC;
hints.ai_socktype = SOCK_STREAM;
hints.ai_flags = AI_PASSIVE;
/* parse args */
memset(&conf, 0, sizeof(conf));
memset(bind, 0, sizeof(bind));
#ifdef HAVE_TLS
/* load TLS plugin */
if( ! (tls_lib = dlopen("uhttpd_tls.so", RTLD_LAZY | RTLD_GLOBAL)) )
{
fprintf(stderr,
"Notice: Unable to load TLS plugin - disabling SSL support! "
"(Reason: %s)\n", dlerror()
);
}
else
{
/* resolve functions */
if( !(conf.tls_init = dlsym(tls_lib, "uh_tls_ctx_init")) ||
!(conf.tls_cert = dlsym(tls_lib, "uh_tls_ctx_cert")) ||
!(conf.tls_key = dlsym(tls_lib, "uh_tls_ctx_key")) ||
!(conf.tls_free = dlsym(tls_lib, "uh_tls_ctx_free")) ||
!(conf.tls_accept = dlsym(tls_lib, "uh_tls_client_accept")) ||
!(conf.tls_close = dlsym(tls_lib, "uh_tls_client_close")) ||
!(conf.tls_recv = dlsym(tls_lib, "uh_tls_client_recv")) ||
!(conf.tls_send = dlsym(tls_lib, "uh_tls_client_send"))
) {
fprintf(stderr,
"Error: Failed to lookup required symbols "
"in TLS plugin: %s\n", dlerror()
);
exit(1);
}
/* init SSL context */
if( ! (conf.tls = conf.tls_init()) )
{
fprintf(stderr, "Error: Failed to initalize SSL context\n");
exit(1);
}
}
#endif
while( (opt = getopt(argc, argv, "fC:K:p:s:h:c:l:L:d:r:m:x:")) > 0 )
{
switch(opt)
{
/* [addr:]port */
case 'p':
case 's':
if( (port = strrchr(optarg, ':')) != NULL )
{
if( (optarg[0] == '[') && (port > optarg) && (port[-1] == ']') )
memcpy(bind, optarg + 1,
min(sizeof(bind), (int)(port - optarg) - 2));
else
memcpy(bind, optarg,
min(sizeof(bind), (int)(port - optarg)));
port++;
}
else
{
port = optarg;
}
if( opt == 's' )
{
if( !conf.tls )
{
fprintf(stderr,
"Notice: TLS support is disabled, "
"ignoring '-s %s'\n", optarg
);
continue;
}
tls = 1;
}
/* bind sockets */
bound += uh_socket_bind(
&serv_fds, &max_fd, bind[0] ? bind : NULL, port,
&hints, (opt == 's'), &conf
);
break;
#ifdef HAVE_TLS
/* certificate */
case 'C':
if( conf.tls )
{
if( conf.tls_cert(conf.tls, optarg) < 1 )
{
fprintf(stderr,
"Error: Invalid certificate file given\n");
exit(1);
}
keys++;
}
break;
/* key */
case 'K':
if( conf.tls )
{
if( conf.tls_key(conf.tls, optarg) < 1 )
{
fprintf(stderr,
"Error: Invalid private key file given\n");
exit(1);
}
keys++;
}
break;
#endif
/* docroot */
case 'h':
if( ! realpath(optarg, conf.docroot) )
{
fprintf(stderr, "Error: Invalid directory %s: %s\n",
optarg, strerror(errno));
exit(1);
}
break;
#ifdef HAVE_CGI
/* cgi prefix */
case 'x':
conf.cgi_prefix = optarg;
break;
#endif
#ifdef HAVE_LUA
/* lua prefix */
case 'l':
conf.lua_prefix = optarg;
break;
/* lua handler */
case 'L':
conf.lua_handler = optarg;
break;
#endif
/* no fork */
case 'f':
nofork = 1;
break;
/* urldecode */
case 'd':
if( (port = malloc(strlen(optarg)+1)) != NULL )
{
memset(port, 0, strlen(optarg)+1);
uh_urldecode(port, strlen(optarg), optarg, strlen(optarg));
printf("%s", port);
free(port);
exit(0);
}
break;
/* basic auth realm */
case 'r':
conf.realm = optarg;
break;
/* md5 crypt */
case 'm':
printf("%s\n", crypt(optarg, "$1$"));
exit(0);
break;
/* config file */
case 'c':
conf.file = optarg;
break;
default:
fprintf(stderr,
"Usage: %s -p [addr:]port [-h docroot]\n"
" -f Do not fork to background\n"
" -c file Configuration file, default is '/etc/httpd.conf'\n"
" -p [addr:]port Bind to specified address and port, multiple allowed\n"
#ifdef HAVE_TLS
" -s [addr:]port Like -p but provide HTTPS on this port\n"
" -C file ASN.1 server certificate file\n"
" -K file ASN.1 server private key file\n"
#endif
" -h directory Specify the document root, default is '.'\n"
#ifdef HAVE_LUA
" -l string URL prefix for Lua handler, default is '/lua'\n"
" -L file Lua handler script, omit to disable Lua\n"
#endif
#ifdef HAVE_CGI
" -x string URL prefix for CGI handler, default is '/cgi-bin'\n"
#endif
" -d string URL decode given string\n"
" -r string Specify basic auth realm\n"
" -m string MD5 crypt given string\n"
"\n", argv[0]
);
exit(1);
}
}
#ifdef HAVE_TLS
if( (tls == 1) && (keys < 2) )
{
fprintf(stderr, "Error: Missing private key or certificate file\n");
exit(1);
}
#endif
if( bound < 1 )
{
fprintf(stderr, "Error: No sockets bound, unable to continue\n");
exit(1);
}
/* default docroot */
if( !conf.docroot[0] && !realpath(".", conf.docroot) )
{
fprintf(stderr, "Error: Can not determine default document root: %s\n",
strerror(errno));
exit(1);
}
/* default realm */
if( ! conf.realm )
conf.realm = "Protected Area";
/* config file */
uh_config_parse(conf.file);
#ifdef HAVE_CGI
/* default cgi prefix */
if( ! conf.cgi_prefix )
conf.cgi_prefix = "/cgi-bin";
#endif
#ifdef HAVE_LUA
/* load Lua plugin */
if( ! (lua_lib = dlopen("uhttpd_lua.so", RTLD_LAZY | RTLD_GLOBAL)) )
{
fprintf(stderr,
"Notice: Unable to load Lua plugin - disabling Lua support! "
"(Reason: %s)\n", dlerror()
);
}
else
{
/* resolve functions */
if( !(conf.lua_init = dlsym(lua_lib, "uh_lua_init")) ||
!(conf.lua_close = dlsym(lua_lib, "uh_lua_close")) ||
!(conf.lua_request = dlsym(lua_lib, "uh_lua_request"))
) {
fprintf(stderr,
"Error: Failed to lookup required symbols "
"in Lua plugin: %s\n", dlerror()
);
exit(1);
}
/* init Lua runtime if handler is specified */
if( conf.lua_handler )
{
/* default lua prefix */
if( ! conf.lua_prefix )
conf.lua_prefix = "/lua";
L = conf.lua_init(conf.lua_handler);
}
}
#endif
/* fork (if not disabled) */
if( ! nofork )
{
switch( fork() )
{
case -1:
perror("fork()");
exit(1);
case 0:
/* daemon setup */
if( chdir("/") )
perror("chdir()");
if( (cur_fd = open("/dev/null", O_WRONLY)) > -1 )
dup2(cur_fd, 0);
if( (cur_fd = open("/dev/null", O_RDONLY)) > -1 )
dup2(cur_fd, 1);
if( (cur_fd = open("/dev/null", O_RDONLY)) > -1 )
dup2(cur_fd, 2);
break;
default:
exit(0);
}
}
/* backup server descriptor set */
used_fds = serv_fds;
/* loop */
while(run)
{
/* create a working copy of the used fd set */
read_fds = used_fds;
/* sleep until socket activity */
if( select(max_fd + 1, &read_fds, NULL, NULL, NULL) == -1 )
{
perror("select()");
exit(1);
}
/* run through the existing connections looking for data to be read */
for( cur_fd = 0; cur_fd <= max_fd; cur_fd++ )
{
/* is a socket managed by us */
if( FD_ISSET(cur_fd, &read_fds) )
{
/* is one of our listen sockets */
if( FD_ISSET(cur_fd, &serv_fds) )
{
/* handle new connections */
if( (new_fd = accept(cur_fd, NULL, 0)) != -1 )
{
/* add to global client list */
if( (cl = uh_client_add(new_fd, uh_listener_lookup(cur_fd))) != NULL )
{
#ifdef HAVE_TLS
/* setup client tls context */
if( conf.tls )
conf.tls_accept(cl);
#endif
/* add client socket to global fdset */
FD_SET(new_fd, &used_fds);
max_fd = max(max_fd, new_fd);
}
/* insufficient resources */
else
{
fprintf(stderr,
"uh_client_add(): Can not manage more than "
"%i client sockets, connection dropped\n",
UH_LIMIT_CLIENTS
);
close(new_fd);
}
}
}
/* is a client socket */
else
{
if( ! (cl = uh_client_lookup(cur_fd)) )
{
/* this should not happen! */
fprintf(stderr,
"uh_client_lookup(): No entry for fd %i!\n",
cur_fd);
goto cleanup;
}
/* parse message header */
if( (req = uh_http_header_recv(cl)) != NULL )
{
#ifdef HAVE_LUA
/* Lua request? */
if( L && uh_path_match(conf.lua_prefix, req->url) )
{
conf.lua_request(cl, req, L);
}
else
#endif
/* dispatch request */
if( (pin = uh_path_lookup(cl, req->url)) != NULL )
{
/* auth ok? */
if( uh_auth_check(cl, req, pin) )
{
#ifdef HAVE_CGI
if( uh_path_match(conf.cgi_prefix, pin->name) )
{
uh_cgi_request(cl, req, pin);
}
else
#endif
{
uh_file_request(cl, req, pin);
}
}
}
/* 404 */
else
{
uh_http_sendhf(cl, 404, "Not Found",
"No such file or directory");
}
}
/* 400 */
else
{
uh_http_sendhf(cl, 400, "Bad Request",
"Malformed request received");
}
#ifdef HAVE_TLS
/* free client tls context */
if( conf.tls )
conf.tls_close(cl);
#endif
cleanup:
/* close client socket */
close(cur_fd);
FD_CLR(cur_fd, &used_fds);
/* remove from global client list */
uh_client_remove(cur_fd);
}
}
}
}
#ifdef HAVE_LUA
/* destroy the Lua state */
if( L != NULL )
conf.lua_close(L);
#endif
return 0;
}

133
package/uhttpd/src/uhttpd.h Normal file
View File

@ -0,0 +1,133 @@
/*
* uhttpd - Tiny single-threaded httpd - Main header
*
* Copyright (C) 2010 Jo-Philipp Wich <xm@subsignal.org>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef _UHTTPD_
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <signal.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/select.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <linux/limits.h>
#include <netdb.h>
#include <ctype.h>
#include <dlfcn.h>
#ifdef HAVE_LUA
#include <lua.h>
#endif
#ifdef HAVE_TLS
#include <openssl/ssl.h>
#endif
#define UH_LIMIT_MSGHEAD 4096
#define UH_LIMIT_HEADERS 64
#define UH_LIMIT_LISTENERS 16
#define UH_LIMIT_CLIENTS 64
#define UH_LIMIT_AUTHREALMS 8
#define UH_HTTP_MSG_GET 0
#define UH_HTTP_MSG_HEAD 1
#define UH_HTTP_MSG_POST 2
struct listener;
struct client;
struct http_request;
struct config {
char docroot[PATH_MAX];
char *realm;
char *file;
#ifdef HAVE_CGI
char *cgi_prefix;
#endif
#ifdef HAVE_LUA
char *lua_prefix;
char *lua_handler;
lua_State * (*lua_init) (const char *handler);
void (*lua_close) (lua_State *L);
void (*lua_request) (struct client *cl, struct http_request *req, lua_State *L);
#endif
#ifdef HAVE_TLS
char *cert;
char *key;
SSL_CTX *tls;
SSL_CTX * (*tls_init) (void);
int (*tls_cert) (SSL_CTX *c, const char *file);
int (*tls_key) (SSL_CTX *c, const char *file);
void (*tls_free) (struct listener *l);
void (*tls_accept) (struct client *c);
void (*tls_close) (struct client *c);
int (*tls_recv) (struct client *c, void *buf, int len);
int (*tls_send) (struct client *c, void *buf, int len);
#endif
};
struct listener {
int socket;
struct sockaddr_in6 addr;
struct config *conf;
#ifdef HAVE_TLS
SSL_CTX *tls;
#endif
};
struct client {
int socket;
int peeklen;
char peekbuf[UH_LIMIT_MSGHEAD];
struct listener *server;
struct sockaddr_in6 servaddr;
struct sockaddr_in6 peeraddr;
#ifdef HAVE_TLS
SSL *tls;
#endif
};
struct auth_realm {
char path[PATH_MAX];
char user[32];
char pass[128];
};
struct http_request {
int method;
float version;
char *url;
char *headers[UH_LIMIT_HEADERS];
struct auth_realm *realm;
};
struct http_response {
int statuscode;
char *statusmsg;
char *headers[UH_LIMIT_HEADERS];
};
#endif