--- /dev/null
+#
+# 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
+ SECTION:=net
+ CATEGORY:=Network
+ TITLE:=uHTTPd - tiny, single threaded HTTP server
+ DEPENDS:=+liblua +libcyassl
+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 Build/Prepare
+ mkdir -p $(PKG_BUILD_DIR)
+ $(CP) ./src/* $(PKG_BUILD_DIR)/
+endef
+
+TARGET_CFLAGS += --std=c99 -D_POSIX_C_SOURCE=200112L -D_XOPEN_SOURCE=500
+TARGET_LDFLAGS += -lz -lm -lcrypt
+
+define Package/uhttpd/install
+ $(INSTALL_DIR) $(1)/sbin
+ $(INSTALL_BIN) $(PKG_BUILD_DIR)/uhttpd $(1)/sbin/
+endef
+
+$(eval $(call BuildPackage,uhttpd))
--- /dev/null
+CGI_SUPPORT:=1
+LUA_SUPPORT:=1
+TLS_SUPPORT:=0
+
+LDFLAGS ?= -L./lua-5.1.4/src -L./cyassl-1.4.0/src/.libs -lm
+CFLAGS ?= -Wall -I./lua-5.1.4/src -I./cyassl-1.4.0/include -O0 -ggdb3
+
+OBJ = uhttpd.o uhttpd-file.o uhttpd-utils.o
+
+ifeq ($(CGI_SUPPORT),1)
+ OBJ += uhttpd-cgi.o
+ CFLAGS += -DHAVE_CGI
+endif
+
+ifeq ($(LUA_SUPPORT),1)
+ OBJ += uhttpd-lua.o
+ CFLAGS += -DHAVE_LUA
+ LDFLAGS += -ldl -llua
+endif
+
+ifeq ($(TLS_SUPPORT),1)
+ OBJ += uhttpd-tls.o
+ CFLAGS += -DHAVE_TLS
+ LDFLAGS += -lcyassl
+endif
+
+%.o: %.c
+ $(CC) $(CFLAGS) -c -o $@ $<
+
+compile: $(OBJ)
+ $(CC) -o uhttpd $(LDFLAGS) $(OBJ)
+
+clean:
+ rm -f *.o uhttpd
+
--- /dev/null
+#include "uhttpd.h"
+#include "uhttpd-cgi.h"
+#include "uhttpd-utils.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 )
+ {
+ *off = (int)(bufptr - buf) + 4;
+
+ 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 void uh_cgi_error_500(struct client *cl, struct http_request *req, const char *message)
+{
+ 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" : ""
+ );
+
+ uh_http_send(cl, req, message, -1);
+}
+
+
+void uh_cgi_request(struct client *cl, struct http_request *req)
+{
+ 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];
+
+ fd_set reader;
+ fd_set writer;
+
+ struct timeval timeout;
+ struct http_response *res;
+ struct uh_path_info *pi;
+
+
+ /* 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( fork() )
+ {
+ /* oops */
+ case -1:
+ uh_http_sendhf(cl, 500, "Internal Server Error",
+ "Failed to fork child: %s", strerror(errno));
+ return;
+
+ /* exec child */
+ case 0:
+ /* child */
+ close(rfd[0]);
+ close(wfd[1]);
+
+ /* patch stdout and stdin to pipes */
+ dup2(rfd[1], 1);
+ dup2(wfd[0], 0);
+
+ if( (pi = uh_path_lookup(cl, req->url)) != NULL )
+ {
+ /* 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", "/usr/bin:/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("SCRIPT_WORKDIR", pi->wdir, 1); /* nonstandard */
+ 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);
+
+ /* 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->wdir) )
+ 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"
+ );
+ }
+ }
+
+ /* 404 */
+ else
+ {
+ printf(
+ "Status: 404 Not Found\r\n\r\n"
+ "Unable to launch the requested CGI program:\n"
+ " No such file or directory\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));
+
+ /* 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 = 3;
+ 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
+ {
+ 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 */
+ uh_http_sendf(cl, NULL, "HTTP/%.1f %03d %s\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")
+ ) {
+ 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")
+ ) {
+ uh_http_send(cl, NULL,
+ "Transfer-Encoding: chunked\r\n", -1);
+ }
+
+ /* write headers from CGI program */
+ foreach_header(i, res->headers)
+ {
+ uh_http_sendf(cl, NULL, "%s: %s\r\n",
+ res->headers[i], res->headers[i+1]);
+ }
+
+ /* terminate header */
+ uh_http_send(cl, NULL, "\r\n", -1);
+
+ /* push out remaining head buffer */
+ if( hdroff < hdrlen )
+ uh_http_send(cl, req, &hdr[hdroff], hdrlen - hdroff);
+ }
+
+ /* ... failed and head buffer exceeded */
+ else if( hdrlen >= sizeof(hdr) )
+ {
+ uh_cgi_error_500(cl, req,
+ "The CGI program generated an invalid response:\n\n");
+
+ uh_http_send(cl, req, hdr, hdrlen);
+ }
+
+ /* ... failed but free buffer space, try again */
+ else
+ {
+ continue;
+ }
+
+ /* push out remaining read buffer */
+ if( bufoff < buflen )
+ uh_http_send(cl, req, &buf[bufoff], buflen - bufoff);
+
+ header_sent = 1;
+ continue;
+ }
+
+
+ /* headers complete, pass through buffer to socket */
+ uh_http_send(cl, req, buf, buflen);
+ }
+
+ /* looks like eof from child */
+ else
+ {
+ /* send final chunk if we're in chunked transfer mode */
+ uh_http_send(cl, req, "", 0);
+ break;
+ }
+ }
+ }
+
+ /* no activity for 3 seconds... looks dead */
+ else
+ {
+ uh_http_sendhf(cl, 504, "Gateway Timeout",
+ "The CGI script took too long to produce a response");
+
+ break;
+ }
+ }
+
+ close(rfd[0]);
+ close(wfd[1]);
+
+ break;
+ }
+}
+
--- /dev/null
+#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 {
+ char *root;
+ char *wdir;
+ char *phys;
+ char *name;
+ char *info;
+ char *query;
+};
+
+#endif
--- /dev/null
+#define _XOPEN_SOURCE 500 /* strptime() ... */
+#define _BSD_SOURCE /* scandir() ... */
+
+#include "uhttpd.h"
+#include "uhttpd-file.h"
+#include "uhttpd-utils.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 mktime(&t);
+
+ return 0;
+}
+
+static char * uh_file_unix2date(time_t ts)
+{
+ static char str[128];
+ struct tm *t = localtime(&ts);
+
+ strftime(str, sizeof(str), "%a, %d %b %Y %H:%M:%S %Z", 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)
+{
+ 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",
+ 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 uh_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)
+{
+ int fd, rlen;
+ char buf[UH_LIMIT_MSGHEAD];
+ struct uh_path_info *pi;
+
+ /* obtain path information */
+ if( (pi = uh_path_lookup(cl, req->url)) != NULL )
+ {
+ /* 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 )
+ uh_http_send(cl, NULL, "Transfer-Encoding: chunked\r\n", -1);
+
+ /* close header */
+ uh_http_send(cl, NULL, "\r\n", -1);
+
+ /* pump file data */
+ while( (rlen = read(fd, buf, sizeof(buf))) > 0 )
+ {
+ uh_http_send(cl, req, buf, rlen);
+ }
+
+ /* 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");
+ }
+ }
+
+ /* 404 */
+ else
+ {
+ uh_http_sendhf(cl, 404, "Not Found",
+ "No such file or directory");
+ }
+}
+
--- /dev/null
+#ifndef _UHTTPD_CGI_
+
+#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);
+
+#endif
--- /dev/null
+#include "uhttpd.h"
+#include "uhttpd-lua.h"
+#include "uhttpd-utils.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;
+ struct client *cl;
+
+ luaL_checktype(L, 1, LUA_TLIGHTUSERDATA);
+ cl = (struct client *) lua_topointer(L, 1);
+ length = luaL_checknumber(L, 2);
+
+ if( (cl != NULL) && (length > 0) && (length <= sizeof(buffer)) )
+ {
+ FD_ZERO(&reader);
+ FD_SET(cl->socket, &reader);
+
+ /* fail after 0.1s */
+ timeout.tv_sec = 0;
+ timeout.tv_usec = 100000;
+
+ /* first return stuff from peek buffer */
+ if( cl->peeklen > 0 )
+ {
+ /* receive data */
+ rlen = uh_tcp_recv(cl, buffer, min(cl->peeklen, length));
+ lua_pushnumber(L, rlen);
+ lua_pushlstring(L, buffer, rlen);
+
+ return 2;
+ }
+
+ /* check whether fd is readable */
+ else if( select(cl->socket + 1, &reader, NULL, NULL, &timeout) > 0 )
+ {
+ /* receive data */
+ rlen = uh_tcp_recv(cl, 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(lua_State *L)
+{
+ size_t length;
+ const char *buffer;
+ ssize_t slen = 0;
+ struct client *cl;
+
+ luaL_checktype(L, 1, LUA_TLIGHTUSERDATA);
+ cl = (struct client *) lua_topointer(L, 1);
+ buffer = luaL_checklstring(L, 2, &length);
+
+ if( (cl != NULL) && (length > 0) )
+ {
+ slen = uh_tcp_send(cl, buffer, length);
+ lua_pushnumber(L, slen);
+ return 1;
+ }
+
+ lua_pushnumber(L, -1);
+ return 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 luaL_reg *lib;
+ const char *err_str = NULL;
+
+ /* Declare the Lua libraries we wish to use. */
+ /* Note: If you are opening and running a file containing Lua code */
+ /* using 'lua_dofile(l, "myfile.lua") - you must delcare all the libraries */
+ /* used in that file here also. */
+ static const luaL_reg lualibs[] =
+ {
+ { "base", luaopen_base },
+ { "string", luaopen_string },
+ { NULL, NULL }
+ };
+
+ /* preload libraries */
+ for (lib = lualibs; lib->func != NULL; lib++)
+ {
+ lib->func(L);
+ lua_settop(L, 0);
+ }
+
+ /* register global send and receive functions */
+ lua_pushcfunction(L, uh_lua_recv);
+ lua_setfield(L, LUA_GLOBALSINDEX, "recv");
+
+ lua_pushcfunction(L, uh_lua_send);
+ lua_setfield(L, LUA_GLOBALSINDEX, "send");
+
+ lua_pushcfunction(L, uh_lua_urldecode);
+ lua_setfield(L, LUA_GLOBALSINDEX, "urldecode");
+
+
+ /* 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;
+ char *query_string;
+ const char *err_str = NULL;
+
+ /* put handler callback on stack */
+ lua_getglobal(L, UH_LUA_CALLBACK);
+
+
+ /* build env table */
+ lua_newtable(L);
+
+ /* client object */
+ lua_pushlightuserdata(L, (void *)cl);
+ lua_setfield(L, -2, "client");
+
+ /* 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_url");
+
+ /* query string, path info */
+ if( (query_string = strchr(req->url, '?')) != NULL )
+ {
+ lua_pushstring(L, query_string + 1);
+ lua_setfield(L, -2, "query_string");
+
+ lua_pushlstring(L, req->url, (int)(query_string - req->url));
+ lua_setfield(L, -2, "path_info");
+ }
+ else
+ {
+ lua_pushstring(L, req->url);
+ lua_setfield(L, -2, "path_info");
+ }
+
+ /* http protcol version */
+ lua_pushnumber(L, floor(req->version * 10) / 10);
+ lua_setfield(L, -2, "http_version");
+
+
+ /* 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");
+
+
+ /* headers */
+ lua_newtable(L);
+
+ foreach_header(i, req->headers)
+ {
+ 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_ERRRUN:
+ err_str = luaL_checkstring(L, -1);
+ uh_http_sendhf(cl, 500, "Lua runtime error",
+ "Lua raised an error:\n%s\n", err_str);
+ break;
+
+ case LUA_ERRMEM:
+ err_str = luaL_checkstring(L, -1);
+ uh_http_sendhf(cl, 500, "Lua out of memory",
+ "Lua raised an error:\n%s\n", err_str);
+ break;
+
+ default:
+ break;
+ }
+}
+
--- /dev/null
+#ifndef _UHTTPD_LUA_
+
+#include <math.h> /* floor() */
+
+#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);
+
+#endif
--- /dev/null
+#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
+
--- /dev/null
+#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;
+}
+
+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);
+ }
+}
+
+void uh_tls_client_close(struct client *c)
+{
+ if( c->tls )
+ {
+ SSL_shutdown(c->tls);
+ SSL_free(c->tls);
+
+ c->tls = NULL;
+ }
+}
--- /dev/null
+#ifndef _UHTTPD_TLS_
+
+#include <openssl/ssl.h>
+
+
+SSL_CTX * uh_tls_ctx_init();
+
+void uh_tls_ctx_free(struct listener *l);
+void uh_tls_client_accept(struct client *c);
+void uh_tls_client_close(struct client *c);
+
+#endif
+
--- /dev/null
+#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 SSL_write(cl->tls, 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 = SSL_read(cl->tls, (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"
+ "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_path_normalize(char *buf, int blen, const char *src, int slen)
+{
+ int i, skip;
+ int len = 0;
+
+ for( i = 0, skip = 1; (i <= slen) && (src[i] != 0); i++ )
+ {
+ /* collapse multiple "/" into one */
+ if( src[i] == '/' )
+ {
+ /* collapse "/../" to "/" */
+ if( ((i+2) <= slen) && (src[i+1] == '.') && (src[i+2] == '.') &&
+ (((i+3) > slen) || (src[i+3] == '/'))
+ ) {
+ i += 2;
+ continue;
+ }
+
+ /* collapse "/./" to "/" */
+ else if( ((i+1) <= slen) && (src[i+1] == '.') &&
+ (((i+2) > slen) || (src[i+2] == '/'))
+ ) {
+ i += 1;
+ continue;
+ }
+
+ /* skip repeating "/" */
+ else if( skip )
+ {
+ continue;
+ }
+
+ skip++;
+ }
+
+ /* finally a harmless char */
+ else
+ {
+ skip = 0;
+ }
+
+ buf[len++] = src[i];
+ }
+
+ return len;
+}
+
+
+struct uh_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 uh_path_info p;
+
+ char buffer[UH_LIMIT_MSGHEAD];
+ char *docroot = cl->server->conf->docroot;
+ char *pathptr = NULL;
+
+ int skip = 0;
+ int plen = 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));
+
+ /* first 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 )
+ plen = uh_urldecode(
+ buffer, sizeof(buffer), url,
+ (int)(pathptr - url) - 1
+ );
+ else
+ plen = 0;
+ }
+
+ /* no query string, decode all of url */
+ else
+ {
+ plen = uh_urldecode(
+ buffer, sizeof(buffer), url, strlen(url)
+ );
+ }
+
+ /* copy docroot */
+ memcpy(path_phys, docroot, sizeof(path_phys));
+
+ /* append normalized path, leave two bytes free
+ * for trailing slash and terminating zero byte */
+ plen = strlen(docroot) + uh_path_normalize(
+ &path_phys[strlen(docroot)],
+ sizeof(path_phys) - strlen(docroot) - 2,
+ buffer, plen
+ );
+
+ /* copy result to info buffer */
+ memcpy(path_info, path_phys, sizeof(path_info));
+
+ /* find path */
+ while( 1 )
+ {
+ /* 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)-1];
+
+ /* find workdir */
+ if( (pathptr = strrchr(path_phys, '/')) != NULL )
+ {
+ path_info[(int)(pathptr - path_phys) + 1] = 0;
+ p.wdir = path_info;
+ }
+ else
+ {
+ p.wdir = docroot;
+ }
+
+ /* find path info */
+ if( path_info[strlen(path_phys)] != 0 )
+ {
+ p.info = &path_info[strlen(path_phys)];
+ }
+
+ break;
+ }
+
+ /* is a directory */
+ else if( (p.stat.st_mode & S_IFDIR) && (skip < 1) )
+ {
+ /* ensure trailing slash */
+ if( path_phys[plen-1] != '/' )
+ path_phys[plen] = '/';
+
+ /* try to locate index file */
+ memset(buffer, 0, sizeof(buffer));
+ memcpy(buffer, path_phys, sizeof(buffer));
+ pathptr = &buffer[strlen(buffer)];
+
+ for( skip = 0; skip < array_size(uh_index_files); skip++ )
+ {
+ strncat(buffer, uh_index_files[skip], sizeof(buffer));
+
+ if( !stat(buffer, &s) && (s.st_mode & S_IFREG) )
+ {
+ memset(path_info, 0, sizeof(path_info));
+ memcpy(path_info, path_phys, strlen(path_phys));
+ memcpy(path_phys, buffer, sizeof(path_phys));
+ memcpy(&p.stat, &s, sizeof(p.stat));
+ p.wdir = path_info;
+ break;
+ }
+
+ *pathptr = 0;
+ }
+
+ p.root = docroot;
+ p.phys = path_phys;
+ p.name = &path_phys[strlen(docroot)-1];
+
+ break;
+ }
+
+ /* not found */
+ else if( skip )
+ {
+ break;
+ }
+ }
+
+ else if( (strlen(path_phys) > strlen(docroot)) &&
+ ((pathptr = strrchr(path_phys, '/')) != NULL)
+ ) {
+ *pathptr = 0;
+ skip = 1;
+ }
+
+ else
+ {
+ break;
+ }
+ }
+
+ return p.phys ? &p : NULL;
+}
+
+
+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--;
+ }
+}
+
+
--- /dev/null
+#ifndef _UHTTPD_UTILS_
+
+#include <stdarg.h>
+#include <fcntl.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 uh_path_info {
+ char *root;
+ char *wdir;
+ 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_path_normalize(char *buf, int blen, const char *src, int slen);
+
+struct uh_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
--- /dev/null
+#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 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)
+{
+ 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_docroot_resolve(const char *path, char *buf)
+{
+ char curpath[PATH_MAX];
+
+ if( ! getcwd(curpath, sizeof(curpath)) )
+ {
+ perror("getcwd()");
+ return 0;
+ }
+
+ if( chdir(path) || !getcwd(buf, PATH_MAX) )
+ {
+ return 0;
+ }
+ else
+ {
+ buf[strlen(buf)] = '/';
+ }
+
+ if( chdir(curpath) )
+ {
+ perror("chdir()");
+ return 0;
+ }
+
+ return 1;
+}
+
+
+int main (int argc, char **argv)
+{
+#ifdef HAVE_LUA
+ /* init Lua runtime */
+ lua_State *L;
+#endif
+
+ /* master file descriptor list */
+ fd_set used_fds, serv_fds, read_fds;
+
+ /* working structs */
+ struct addrinfo hints;
+ struct http_request *req;
+ struct client *cl;
+ struct sigaction sa;
+ struct config conf;
+
+ /* maximum file descriptor number */
+ int new_fd, cur_fd, max_fd = 0;
+ int keys = 0;
+ int bound = 0;
+ int nofork = 0;
+
+ /* args */
+ char opt;
+ char bind[128];
+ char *port = NULL;
+
+ /* clear the master and temp sets */
+ FD_ZERO(&used_fds);
+ FD_ZERO(&serv_fds);
+ FD_ZERO(&read_fds);
+
+ /* handle SIGPIPE, SIGCHILD */
+ 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
+ /* init SSL context */
+ if( ! (conf.tls = uh_tls_ctx_init()) )
+ {
+ fprintf(stderr, "Failed to initalize SSL context\n");
+ exit(1);
+ }
+#endif
+
+ while( (opt = getopt(argc, argv, "fC:K:p:s:h:c:l:L:d:")) > 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;
+ }
+
+ /* bind sockets */
+ bound += uh_socket_bind(
+ &serv_fds, &max_fd, bind[0] ? bind : NULL, port, &hints,
+ (opt == 's') ? 1 : 0, &conf
+ );
+
+ break;
+
+#ifdef HAVE_TLS
+ /* certificate */
+ case 'C':
+ if( SSL_CTX_use_certificate_file(conf.tls, optarg, SSL_FILETYPE_ASN1) < 1 )
+ {
+ fprintf(stderr, "Invalid certificate file given\n");
+ exit(1);
+ }
+
+ keys++;
+ break;
+
+ /* key */
+ case 'K':
+ if( SSL_CTX_use_PrivateKey_file(conf.tls, optarg, SSL_FILETYPE_ASN1) < 1 )
+ {
+ fprintf(stderr, "Invalid private key file given\n");
+ exit(1);
+ }
+
+ keys++;
+ break;
+#endif
+
+ /* docroot */
+ case 'h':
+ if( ! uh_docroot_resolve(optarg, conf.docroot) )
+ {
+ fprintf(stderr, "Invalid directory: %s\n", optarg);
+ exit(1);
+ }
+ break;
+
+#ifdef HAVE_CGI
+ /* cgi prefix */
+ case 'c':
+ 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;
+
+ default:
+ fprintf(stderr,
+ "Usage: %s -p [addr:]port [-h docroot]\n"
+ " -p Bind to specified address and port, multiple allowed\n"
+#ifdef HAVE_TLS
+ " -s Like -p but provide HTTPS on this port\n"
+ " -C ASN.1 server certificate file\n"
+ " -K ASN.1 server private key file\n"
+#endif
+ " -h Specify the document root, default is '.'\n"
+ " -f Do not fork to background\n"
+#ifdef HAVE_LUA
+ " -l URL prefix for Lua handler, default is '/lua'\n"
+ " -L Lua handler script, default is './lua/handler.lua'\n"
+#endif
+#ifdef HAVE_CGI
+ " -c URL prefix for CGI handler, default is '/cgi-bin'\n"
+#endif
+ " -d URL decode given string\n"
+ "\n", argv[0]
+ );
+
+ exit(1);
+ }
+ }
+
+#ifdef HAVE_TLS
+ if( keys < 2 )
+ {
+ fprintf(stderr, "Missing private key or certificate file\n");
+ exit(1);
+ }
+#endif
+
+ if( bound < 1 )
+ {
+ fprintf(stderr, "No sockets bound, unable to continue\n");
+ exit(1);
+ }
+
+ /* default docroot */
+ if( !conf.docroot[0] && !uh_docroot_resolve(".", conf.docroot) )
+ {
+ fprintf(stderr, "Can not determine default document root\n");
+ exit(1);
+ }
+
+#ifdef HAVE_LUA
+ /* default lua prefix and handler */
+ if( ! conf.lua_handler )
+ conf.lua_handler = "./lua/handler.lua";
+
+ if( ! conf.lua_prefix )
+ conf.lua_prefix = "/lua";
+#endif
+
+#ifdef HAVE_CGI
+ /* default cgi prefix */
+ if( ! conf.cgi_prefix )
+ conf.cgi_prefix = "/cgi-bin";
+#endif
+
+#ifdef HAVE_LUA
+ /* init Lua runtime */
+ L = uh_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 */
+ uh_tls_client_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 and dispatch request */
+ if( (req = uh_http_header_recv(cl)) != NULL )
+ {
+#ifdef HAVE_CGI
+ if( strstr(req->url, conf.cgi_prefix) == req->url )
+ {
+ uh_cgi_request(cl, req);
+ }
+ else
+#endif
+
+#ifdef HAVE_LUA
+ if( strstr(req->url, conf.lua_prefix) == req->url )
+ {
+ uh_lua_request(cl, req, L);
+ }
+ else
+#endif
+
+ {
+ uh_file_request(cl, req);
+ }
+ }
+
+
+#ifdef HAVE_TLS
+ /* free client tls context */
+ uh_tls_client_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 */
+ lua_close(L);
+#endif
+
+ return 0;
+}
+
--- /dev/null
+#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>
+
+#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_HTTP_MSG_GET 0
+#define UH_HTTP_MSG_HEAD 1
+#define UH_HTTP_MSG_POST 2
+
+
+struct config {
+ char docroot[PATH_MAX];
+#ifdef HAVE_CGI
+ char *cgi_prefix;
+#endif
+#ifdef HAVE_LUA
+ char *lua_prefix;
+ char *lua_handler;
+#endif
+#ifdef HAVE_TLS
+ char *cert;
+ char *key;
+ SSL_CTX *tls;
+#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 http_request {
+ int method;
+ float version;
+ char *url;
+ char *headers[UH_LIMIT_HEADERS];
+};
+
+struct http_response {
+ int statuscode;
+ char *statusmsg;
+ char *headers[UH_LIMIT_HEADERS];
+};
+
+#endif
+
projects / project / luci.git / commitdiff