+++ /dev/null
-/*
- * httpd.c - a simple HTTP server
- */
-
-/*
- * Copyright (C) 2002 RealVNC Ltd.
- * Copyright (C) 1999 AT&T Laboratories Cambridge. All Rights Reserved.
- *
- * This is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This software is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this software; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
- * USA.
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <sys/types.h>
-#include <sys/time.h>
-#include <sys/socket.h>
-#include <netinet/in.h>
-#include <netinet/tcp.h>
-#include <arpa/inet.h>
-#include <netdb.h>
-#include <fcntl.h>
-#include <errno.h>
-#include <pwd.h>
-
-#include "rfb.h"
-
-#define NOT_FOUND_STR "HTTP/1.0 404 Not found\r\n\r\n" \
- "<HEAD><TITLE>File Not Found</TITLE></HEAD>\n" \
- "<BODY><H1>File Not Found</H1></BODY>\n"
-
-#define OK_STR "HTTP/1.0 200 OK\r\n\r\n"
-
-static void httpProcessInput();
-static Bool compareAndSkip(char **ptr, const char *str);
-
-int httpPort = 0;
-char *httpDir = NULL;
-
-int httpListenSock = -1;
-int httpSock = -1;
-
-#define BUF_SIZE 32768
-
-static char buf[BUF_SIZE];
-static int bufLen;
-
-
-/*
- * httpInitSockets sets up the TCP socket to listen for HTTP connections.
- */
-
-void httpInitSockets()
-{
- static Bool done = FALSE;
-
- if (done)
- return;
-
- done = TRUE;
-
- if (!httpDir)
- return;
-
- if (httpPort == 0) {
- httpPort = 5800 + atoi(display);
- }
-
- rfbLog("Listening for HTTP connections on TCP port %d\n", httpPort);
-
- rfbLog(" URL http://%s:%d\n",rfbThisHost,httpPort);
-
- if ((httpListenSock = ListenOnTCPPort(httpPort)) < 0) {
- rfbLogPerror("ListenOnTCPPort");
- exit(1);
- }
-
- AddEnabledDevice(httpListenSock);
-}
-
-
-/*
- * httpCheckFds is called from ProcessInputEvents to check for input on the
- * HTTP socket(s). If there is input to process, httpProcessInput is called.
- */
-
-void httpCheckFds()
-{
- int nfds;
- fd_set fds;
- struct timeval tv;
- struct sockaddr_in addr;
- unsigned int addrlen = sizeof(addr);
- int flags;
-
- if (!httpDir)
- return;
-
- FD_ZERO(&fds);
- FD_SET(httpListenSock, &fds);
- if (httpSock >= 0) {
- FD_SET(httpSock, &fds);
- }
- tv.tv_sec = 0;
- tv.tv_usec = 0;
- nfds = select(max(httpSock,httpListenSock) + 1, &fds, NULL, NULL, &tv);
- if (nfds == 0) {
- return;
- }
- if (nfds < 0) {
- rfbLogPerror("httpCheckFds: select");
- return;
- }
-
- if ((httpSock >= 0) && FD_ISSET(httpSock, &fds)) {
- httpProcessInput();
- }
-
- if (FD_ISSET(httpListenSock, &fds)) {
-
- if (httpSock >= 0) close(httpSock);
-
- if ((httpSock = accept(httpListenSock,
- (struct sockaddr *)&addr, &addrlen)) < 0) {
- rfbLogPerror("httpCheckFds: accept");
- return;
- }
-
- flags = fcntl(httpSock, F_GETFL);
-
- if (flags < 0 || fcntl(httpSock, F_SETFL, flags | O_NONBLOCK) == -1) {
- rfbLogPerror("httpCheckFds: fcntl");
- close(httpSock);
- httpSock = -1;
- return;
- }
-
- AddEnabledDevice(httpSock);
- bufLen = 0;
- }
-}
-
-
-static void httpCloseSock()
-{
- close(httpSock);
- RemoveEnabledDevice(httpSock);
- httpSock = -1;
-}
-
-
-/*
- * httpProcessInput is called when input is received on the HTTP socket. We
- * read lines from the HTTP client until we get a blank line (the end of an
- * HTTP request). The socket is non-blocking so we return if there's no more
- * to read and will carry on where we left off when more data is available.
- */
-
-static void httpProcessInput()
-{
- struct sockaddr_in addr;
- unsigned int addrlen = sizeof(addr);
- char fullFname[256];
- char *fname;
- int maxFnameLen;
- int fd;
- Bool performSubstitutions = FALSE;
- char str[256];
- struct passwd *user = getpwuid(getuid());
- int n;
-
- if (strlen(httpDir) > 200) {
- rfbLog("-httpd directory too long\n");
- httpCloseSock();
- return;
- }
- strcpy(fullFname, httpDir);
- fname = &fullFname[strlen(fullFname)];
- maxFnameLen = 255 - strlen(fullFname);
-
- while (1) {
- if (bufLen >= BUF_SIZE-1) {
- rfbLog("httpProcessInput: HTTP request is too long\n");
- httpCloseSock();
- return;
- }
-
- n = read(httpSock, buf + bufLen, BUF_SIZE - bufLen - 1);
-
- if (n <= 0) {
- if (n < 0) {
- if (errno == EAGAIN) return;
- rfbLogPerror("httpProcessInput: read");
- } else {
- rfbLog("httpProcessInput: connection closed\n");
- }
- httpCloseSock();
- return;
- }
-
- bufLen += n;
- buf[bufLen] = 0;
-
- if (strstr(buf, "\r\r") || strstr(buf, "\n\n") ||
- strstr(buf, "\r\n\r\n") || strstr(buf, "\n\r\n\r"))
- break;
- }
-
- if (strncmp(buf, "GET ", 4) != 0) {
- rfbLog("httpProcessInput: first line wasn't a GET?\n");
- httpCloseSock();
- return;
- }
-
- buf[strcspn(buf, "\r\n")] = 0; /* only want first line */
-
- if (strlen(buf) > maxFnameLen) {
- rfbLog("httpProcessInput: GET line too long\n");
- httpCloseSock();
- return;
- }
-
- if (sscanf(buf, "GET %s HTTP", fname) != 1) {
- rfbLog("httpProcessInput: couldn't parse GET line\n");
- httpCloseSock();
- return;
- }
-
- if (fname[0] != '/') {
- rfbLog("httpProcessInput: filename didn't begin with '/'\n");
- WriteExact(httpSock, NOT_FOUND_STR, strlen(NOT_FOUND_STR));
- httpCloseSock();
- return;
- }
-
- if (strchr(fname+1, '/') != NULL) {
- rfbLog("httpProcessInput: asking for file in other directory\n");
- WriteExact(httpSock, NOT_FOUND_STR, strlen(NOT_FOUND_STR));
- httpCloseSock();
- return;
- }
-
- getpeername(httpSock, (struct sockaddr *)&addr, &addrlen);
- rfbLog("httpd: get '%s' for %s\n", fname+1,
- inet_ntoa(addr.sin_addr));
-
- /* If we were asked for '/', actually read the file index.vnc */
-
- if (strcmp(fname, "/") == 0) {
- strcpy(fname, "/index.vnc");
- rfbLog("httpd: defaulting to '%s'\n", fname+1);
- }
-
- /* Substitutions are performed on files ending .vnc */
-
- if (strlen(fname) >= 4 && strcmp(&fname[strlen(fname)-4], ".vnc") == 0) {
- performSubstitutions = TRUE;
- }
-
- /* Open the file */
-
- if ((fd = open(fullFname, O_RDONLY)) < 0) {
- rfbLogPerror("httpProcessInput: open");
- WriteExact(httpSock, NOT_FOUND_STR, strlen(NOT_FOUND_STR));
- httpCloseSock();
- return;
- }
-
- WriteExact(httpSock, OK_STR, strlen(OK_STR));
-
- while (1) {
- int n = read(fd, buf, BUF_SIZE-1);
- if (n < 0) {
- rfbLogPerror("httpProcessInput: read");
- close(fd);
- httpCloseSock();
- return;
- }
-
- if (n == 0)
- break;
-
- if (performSubstitutions) {
-
- /* Substitute $WIDTH, $HEIGHT, etc with the appropriate values.
- This won't quite work properly if the .vnc file is longer than
- BUF_SIZE, but it's reasonable to assume that .vnc files will
- always be short. */
-
- char *ptr = buf;
- char *dollar;
- buf[n] = 0; /* make sure it's null-terminated */
-
- while ((dollar = strchr(ptr, '$'))) {
- WriteExact(httpSock, ptr, (dollar - ptr));
-
- ptr = dollar;
-
- if (compareAndSkip(&ptr, "$WIDTH")) {
-
- sprintf(str, "%d", rfbScreen.width);
- WriteExact(httpSock, str, strlen(str));
-
- } else if (compareAndSkip(&ptr, "$HEIGHT")) {
-
- sprintf(str, "%d", rfbScreen.height);
- WriteExact(httpSock, str, strlen(str));
-
- } else if (compareAndSkip(&ptr, "$APPLETWIDTH")) {
-
- sprintf(str, "%d", rfbScreen.width);
- WriteExact(httpSock, str, strlen(str));
-
- } else if (compareAndSkip(&ptr, "$APPLETHEIGHT")) {
-
- sprintf(str, "%d", rfbScreen.height + 32);
- WriteExact(httpSock, str, strlen(str));
-
- } else if (compareAndSkip(&ptr, "$PORT")) {
-
- sprintf(str, "%d", rfbPort);
- WriteExact(httpSock, str, strlen(str));
-
- } else if (compareAndSkip(&ptr, "$DESKTOP")) {
-
- WriteExact(httpSock, desktopName, strlen(desktopName));
-
- } else if (compareAndSkip(&ptr, "$DISPLAY")) {
-
- sprintf(str, "%s:%s", rfbThisHost, display);
- WriteExact(httpSock, str, strlen(str));
-
- } else if (compareAndSkip(&ptr, "$USER")) {
-
- if (user) {
- WriteExact(httpSock, user->pw_name,
- strlen(user->pw_name));
- } else {
- WriteExact(httpSock, "?", 1);
- }
-
- } else {
- if (!compareAndSkip(&ptr, "$$"))
- ptr++;
-
- if (WriteExact(httpSock, "$", 1) < 0) {
- close(fd);
- httpCloseSock();
- return;
- }
- }
- }
- if (WriteExact(httpSock, ptr, (&buf[n] - ptr)) < 0)
- break;
-
- } else {
-
- /* For files not ending .vnc, just write out the buffer */
-
- if (WriteExact(httpSock, buf, n) < 0)
- break;
- }
- }
-
- close(fd);
- httpCloseSock();
-}
-
-
-static Bool
-compareAndSkip(char **ptr, const char *str)
-{
- if (strncmp(*ptr, str, strlen(str)) == 0) {
- *ptr += strlen(str);
- return TRUE;
- }
-
- return FALSE;
-}
projects / rdpsrv / blobdiff