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libvncserver
Commit 727b0257 authored by dscho's avatar dscho
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synchronized with tightVNC 1.2.5

parent 598c460c
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Showing with 127 additions and 12 deletions
classes/VncViewer.jar
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classes/index.vnc
View file @ 727b0257
<!-- index.vnc - default html page for Java VNC viewer applet. On any file
ending in .vnc, the HTTP server embedded in Xvnc will substitute the
following variables when preceded by a dollar: USER, DESKTOP, DISPLAY,
APPLETWIDTH, APPLETHEIGHT, WIDTH, HEIGHT, PORT. Use two dollar signs
($$) to get a dollar sign in the generated html. -->
APPLETWIDTH, APPLETHEIGHT, WIDTH, HEIGHT, PORT, PARAMS. Use two dollar
signs ($$) to get a dollar sign in the generated html. -->
<HTML>
<TITLE>
......
httpd.c
View file @ 727b0257
......@@ -54,6 +54,8 @@
static void httpProcessInput();
static Bool compareAndSkip(char **ptr, const char *str);
static Bool parseParams(const char *request, char *result, int max_bytes);
static Bool validateString(char *str);
/*
int httpPort = 0;
......@@ -153,7 +155,7 @@ httpCheckFds(rfbScreenInfoPtr rfbScreen)
#ifdef USE_LIBWRAP
if(!hosts_ctl("vnc",STRING_UNKNOWN,inet_ntoa(addr.sin_addr),
STRING_UNKNOWN)) {
rfbLog("Rejected connection from client %s\n",
rfbLog("Rejected HTTP connection from client %s\n",
inet_ntoa(addr.sin_addr));
#else
if ((rfbScreen->httpFP = fdopen(rfbScreen->httpSock, "r+")) == NULL) {
......@@ -197,7 +199,9 @@ httpProcessInput(rfbScreenInfoPtr rfbScreen)
{
struct sockaddr_in addr;
socklen_t addrlen = sizeof(addr);
char fullFname[256];
char fullFname[512];
char params[1024];
char *ptr;
char *fname;
unsigned int maxFnameLen;
FILE* fd;
......@@ -209,14 +213,14 @@ httpProcessInput(rfbScreenInfoPtr rfbScreen)
cl.sock=rfbScreen->httpSock;
if (strlen(rfbScreen->httpDir) > 200) {
if (strlen(rfbScreen->httpDir) > 255) {
rfbLog("-httpd directory too long\n");
httpCloseSock(rfbScreen);
return;
}
strcpy(fullFname, rfbScreen->httpDir);
fname = &fullFname[strlen(fullFname)];
maxFnameLen = 255 - strlen(fullFname);
maxFnameLen = 511 - strlen(fullFname);
buf_filled=0;
......@@ -250,7 +254,7 @@ httpProcessInput(rfbScreenInfoPtr rfbScreen)
/* Process the request. */
if (strncmp(buf, "GET ", 4)) {
rfbLog("no GET line\n");
rfbLog("httpd: no GET line\n");
httpCloseSock(rfbScreen);
return;
} else {
......@@ -259,26 +263,26 @@ httpProcessInput(rfbScreenInfoPtr rfbScreen)
}
if (strlen(buf) > maxFnameLen) {
rfbLog("GET line too long\n");
rfbLog("httpd: GET line too long\n");
httpCloseSock(rfbScreen);
return;
}
if (sscanf(buf, "GET %s HTTP/1.0", fname) != 1) {
rfbLog("couldn't parse GET line\n");
rfbLog("httpd: couldn't parse GET line\n");
httpCloseSock(rfbScreen);
return;
}
if (fname[0] != '/') {
rfbLog("filename didn't begin with '/'\n");
rfbLog("httpd: filename didn't begin with '/'\n");
WriteExact(&cl, NOT_FOUND_STR, strlen(NOT_FOUND_STR));
httpCloseSock(rfbScreen);
return;
}
if (strchr(fname+1, '/') != NULL) {
rfbLog("asking for file in other directory\n");
rfbLog("httpd: asking for file in other directory\n");
WriteExact(&cl, NOT_FOUND_STR, strlen(NOT_FOUND_STR));
httpCloseSock(rfbScreen);
return;
......@@ -288,6 +292,19 @@ httpProcessInput(rfbScreenInfoPtr rfbScreen)
rfbLog("httpd: get '%s' for %s\n", fname+1,
inet_ntoa(addr.sin_addr));
/* Extract parameters from the URL string if necessary */
params[0] = '\0';
ptr = strchr(fname, '?');
if (ptr != NULL) {
*ptr = '\0';
if (!parseParams(&ptr[1], params, 1024)) {
params[0] = '\0';
rfbLog("httpd: bad parameters in the URL\n");
}
}
/* If we were asked for '/', actually read the file index.vnc */
if (strcmp(fname, "/") == 0) {
......@@ -382,6 +399,11 @@ httpProcessInput(rfbScreenInfoPtr rfbScreen)
} else
#endif
WriteExact(&cl, "?", 1);
} else if (compareAndSkip(&ptr, "$PARAMS")) {
if (params[0] != '\0')
WriteExact(httpSock, params, strlen(params));
} else {
if (!compareAndSkip(&ptr, "$$"))
ptr++;
......@@ -420,3 +442,96 @@ compareAndSkip(char **ptr, const char *str)
return FALSE;
}
/*
* Parse the request tail after the '?' character, and format a sequence
* of <param> tags for inclusion into an HTML page with embedded applet.
*/
static Bool
parseParams(const char *request, char *result, int max_bytes)
{
char param_request[128];
char param_formatted[196];
const char *tail;
char *delim_ptr;
char *value_str;
int cur_bytes, len;
result[0] = '\0';
cur_bytes = 0;
tail = request;
for (;;) {
/* Copy individual "name=value" string into a buffer */
delim_ptr = strchr((char *)tail, '&');
if (delim_ptr == NULL) {
if (strlen(tail) >= sizeof(param_request)) {
return FALSE;
}
strcpy(param_request, tail);
} else {
len = delim_ptr - tail;
if (len >= sizeof(param_request)) {
return FALSE;
}
memcpy(param_request, tail, len);
param_request[len] = '\0';
}
/* Split the request into parameter name and value */
value_str = strchr(&param_request[1], '=');
if (value_str == NULL) {
return FALSE;
}
*value_str++ = '\0';
if (strlen(value_str) == 0) {
return FALSE;
}
/* Validate both parameter name and value */
if (!validateString(param_request) || !validateString(value_str)) {
return FALSE;
}
/* Prepare HTML-formatted representation of the name=value pair */
len = sprintf(param_formatted,
"<PARAM NAME=\"%s\" VALUE=\"%s\">\n",
param_request, value_str);
if (cur_bytes + len + 1 > max_bytes) {
return FALSE;
}
strcat(result, param_formatted);
cur_bytes += len;
/* Go to the next parameter */
if (delim_ptr == NULL) {
break;
}
tail = delim_ptr + 1;
}
return TRUE;
}
/*
* Check if the string consists only of alphanumeric characters, '+'
* signs, underscores, and dots. Replace all '+' signs with spaces.
*/
static Bool
validateString(char *str)
{
char *ptr;
for (ptr = str; *ptr != '\0'; ptr++) {
if (!isalnum(*ptr) && *ptr != '_' && *ptr != '.') {
if (*ptr == '+') {
*ptr = ' ';
} else {
return FALSE;
}
}
}
return TRUE;
}
vncauth.c
View file @ 727b0257
......@@ -63,7 +63,7 @@ vncEncryptAndStorePasswd(char *passwd, char *fname)
/* windows security sux */
#ifndef WIN32
chmod(fname, S_IRUSR|S_IWUSR);
fchmod(fp, S_IRUSR|S_IWUSR);
#endif
/* pad password with nulls */
......
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