mirror of
https://github.com/kasmtech/KasmVNC.git
synced 2024-11-07 16:54:13 +01:00
Add support for custom response headers
This commit is contained in:
Lauri Kasanen
parent
6b9f28760c
commit
17947d5f44
@ -46,6 +46,9 @@ settings_t settings;
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extern int wakeuppipe[2];
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extern char *extra_headers;
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extern unsigned extra_headers_len;
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void traffic(const char * token) {
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/*if ((settings.verbose) && (! settings.daemon)) {
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fprintf(stdout, "%s", token);
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@ -836,7 +839,8 @@ static void dirlisting(ws_ctx_t *ws_ctx, const char fullpath[], const char path[
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"Location: %s/\r\n"
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"Connection: close\r\n"
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"Content-type: text/plain\r\n"
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"\r\n", path);
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"%s"
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"\r\n", path, extra_headers ? extra_headers : "");
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ws_send(ws_ctx, buf, strlen(buf));
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weblog(301, wsthread_handler_id, 0, origip, ip, user, 1, path, strlen(buf));
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return;
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@ -850,7 +854,9 @@ static void dirlisting(ws_ctx_t *ws_ctx, const char fullpath[], const char path[
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"Server: KasmVNC/4.0\r\n"
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"Connection: close\r\n"
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"Content-type: text/html\r\n"
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"\r\n<html><title>Directory Listing</title><body><h2>%s</h2><hr><ul>", path);
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"%s"
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"\r\n<html><title>Directory Listing</title><body><h2>%s</h2><hr><ul>",
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extra_headers ? extra_headers : "", path);
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ws_send(ws_ctx, buf, strlen(buf));
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unsigned totallen = strlen(buf);
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@ -937,8 +943,9 @@ static void servefile(ws_ctx_t *ws_ctx, const char *in, const char * const user,
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"Connection: close\r\n"
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"Content-type: %s\r\n"
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"Content-length: %lu\r\n"
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"%s"
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"\r\n",
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name2mime(path), filesize);
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name2mime(path), filesize, extra_headers ? extra_headers : "");
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const unsigned hdrlen = strlen(buf);
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ws_send(ws_ctx, buf, hdrlen);
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@ -958,8 +965,9 @@ nope:
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"Server: KasmVNC/4.0\r\n"
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"Connection: close\r\n"
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"Content-type: text/plain\r\n"
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"%s"
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"\r\n"
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"404");
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"404", extra_headers ? extra_headers : "");
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ws_send(ws_ctx, buf, strlen(buf));
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weblog(404, wsthread_handler_id, 0, origip, ip, user, 1, path, strlen(buf));
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}
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@ -999,14 +1007,16 @@ notfound:
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}
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static void send403(ws_ctx_t *ws_ctx, const char * const origip, const char * const ip) {
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const char response[] = "HTTP/1.1 403 Forbidden\r\n"
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"Server: KasmVNC/4.0\r\n"
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"Connection: close\r\n"
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"Content-type: text/plain\r\n"
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"\r\n"
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"403 Forbidden";
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ws_send(ws_ctx, response, strlen(response));
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weblog(403, wsthread_handler_id, 0, origip, ip, "-", 1, "-", strlen(response));
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char buf[4096];
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sprintf(buf, "HTTP/1.1 403 Forbidden\r\n"
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"Server: KasmVNC/4.0\r\n"
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"Connection: close\r\n"
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"Content-type: text/plain\r\n"
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"%s"
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"\r\n"
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"403 Forbidden", extra_headers ? extra_headers : "");
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ws_send(ws_ctx, buf, strlen(buf));
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weblog(403, wsthread_handler_id, 0, origip, ip, "-", 1, "-", strlen(buf));
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}
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static uint8_t ownerapi_post(ws_ctx_t *ws_ctx, const char *in, const char * const user,
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@ -1079,8 +1089,9 @@ static uint8_t ownerapi_post(ws_ctx_t *ws_ctx, const char *in, const char * cons
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"Connection: close\r\n"
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"Content-type: text/plain\r\n"
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"Content-length: 6\r\n"
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"%s"
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"\r\n"
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"200 OK");
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"200 OK", extra_headers ? extra_headers : "");
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ws_send(ws_ctx, buf, strlen(buf));
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weblog(200, wsthread_handler_id, 0, origip, ip, user, 0, path, strlen(buf));
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@ -1117,8 +1128,9 @@ static uint8_t ownerapi_post(ws_ctx_t *ws_ctx, const char *in, const char * cons
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"Connection: close\r\n"
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"Content-type: text/plain\r\n"
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"Content-length: 6\r\n"
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"%s"
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"\r\n"
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"200 OK");
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"200 OK", extra_headers ? extra_headers : "");
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ws_send(ws_ctx, buf, strlen(buf));
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weblog(200, wsthread_handler_id, 0, origip, ip, user, 0, path, strlen(buf));
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@ -1171,8 +1183,9 @@ static uint8_t ownerapi_post(ws_ctx_t *ws_ctx, const char *in, const char * cons
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"Connection: close\r\n"
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"Content-type: text/plain\r\n"
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"Content-length: 6\r\n"
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"%s"
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"\r\n"
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"200 OK");
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"200 OK", extra_headers ? extra_headers : "");
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ws_send(ws_ctx, buf, strlen(buf));
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weblog(200, wsthread_handler_id, 0, origip, ip, user, 0, path, strlen(buf));
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@ -1187,8 +1200,9 @@ nope:
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"Server: KasmVNC/4.0\r\n"
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"Connection: close\r\n"
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"Content-type: text/plain\r\n"
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"%s"
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"\r\n"
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"400 Bad Request");
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"400 Bad Request", extra_headers ? extra_headers : "");
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ws_send(ws_ctx, buf, strlen(buf));
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weblog(400, wsthread_handler_id, 0, origip, ip, user, 0, path, strlen(buf));
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return 1;
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@ -1273,7 +1287,8 @@ static uint8_t ownerapi(ws_ctx_t *ws_ctx, const char *in, const char * const use
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"Connection: close\r\n"
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"Content-type: text/plain\r\n"
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"Content-length: %u\r\n"
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"\r\n", len);
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"%s"
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"\r\n", len, extra_headers ? extra_headers : "");
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ws_send(ws_ctx, buf, strlen(buf));
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ws_send(ws_ctx, staging, len);
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weblog(200, wsthread_handler_id, 0, origip, ip, user, 1, origpath, strlen(buf) + len);
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@ -1286,7 +1301,8 @@ static uint8_t ownerapi(ws_ctx_t *ws_ctx, const char *in, const char * const use
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"Connection: close\r\n"
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"Content-type: image/jpeg\r\n"
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"Content-length: %u\r\n"
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"\r\n", len);
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"%s"
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"\r\n", len, extra_headers ? extra_headers : "");
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ws_send(ws_ctx, buf, strlen(buf));
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ws_send(ws_ctx, staging, len);
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weblog(200, wsthread_handler_id, 0, origip, ip, user, 1, origpath, strlen(buf) + len);
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@ -1356,8 +1372,9 @@ static uint8_t ownerapi(ws_ctx_t *ws_ctx, const char *in, const char * const use
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"Connection: close\r\n"
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"Content-type: text/plain\r\n"
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"Content-length: 6\r\n"
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"%s"
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"\r\n"
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"200 OK");
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"200 OK", extra_headers ? extra_headers : "");
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ws_send(ws_ctx, buf, strlen(buf));
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weblog(200, wsthread_handler_id, 0, origip, ip, user, 1, origpath, strlen(buf));
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@ -1385,8 +1402,9 @@ static uint8_t ownerapi(ws_ctx_t *ws_ctx, const char *in, const char * const use
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"Connection: close\r\n"
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"Content-type: text/plain\r\n"
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"Content-length: 6\r\n"
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"%s"
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"\r\n"
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"200 OK");
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"200 OK", extra_headers ? extra_headers : "");
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ws_send(ws_ctx, buf, strlen(buf));
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weblog(200, wsthread_handler_id, 0, origip, ip, user, 1, origpath, strlen(buf));
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@ -1440,8 +1458,9 @@ static uint8_t ownerapi(ws_ctx_t *ws_ctx, const char *in, const char * const use
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"Connection: close\r\n"
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"Content-type: text/plain\r\n"
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"Content-length: 6\r\n"
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"%s"
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"\r\n"
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"200 OK");
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"200 OK", extra_headers ? extra_headers : "");
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ws_send(ws_ctx, buf, strlen(buf));
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weblog(200, wsthread_handler_id, 0, origip, ip, user, 1, origpath, strlen(buf));
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@ -1455,7 +1474,8 @@ static uint8_t ownerapi(ws_ctx_t *ws_ctx, const char *in, const char * const use
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"Connection: close\r\n"
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"Content-type: text/plain\r\n"
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"Content-length: %lu\r\n"
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"\r\n", strlen(statbuf));
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"%s"
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"\r\n", strlen(statbuf), extra_headers ? extra_headers : "");
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ws_send(ws_ctx, buf, strlen(buf));
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ws_send(ws_ctx, statbuf, strlen(statbuf));
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weblog(200, wsthread_handler_id, 0, origip, ip, user, 1, origpath, strlen(buf) + strlen(statbuf));
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@ -1471,7 +1491,8 @@ static uint8_t ownerapi(ws_ctx_t *ws_ctx, const char *in, const char * const use
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"Connection: close\r\n"
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"Content-type: text/plain\r\n"
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"Content-length: %lu\r\n"
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"\r\n", strlen(ptr));
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"%s"
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"\r\n", strlen(ptr), extra_headers ? extra_headers : "");
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ws_send(ws_ctx, buf, strlen(buf));
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ws_send(ws_ctx, ptr, strlen(ptr));
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weblog(200, wsthread_handler_id, 0, origip, ip, user, 1, origpath, strlen(buf) + strlen(ptr));
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@ -1553,7 +1574,8 @@ static uint8_t ownerapi(ws_ctx_t *ws_ctx, const char *in, const char * const use
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"Connection: close\r\n"
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"Content-type: text/plain\r\n"
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"Content-length: %lu\r\n"
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"\r\n", strlen(statbuf));
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"%s"
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"\r\n", strlen(statbuf), extra_headers ? extra_headers : "");
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ws_send(ws_ctx, buf, strlen(buf));
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ws_send(ws_ctx, statbuf, strlen(statbuf));
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weblog(200, wsthread_handler_id, 0, origip, ip, user, 1, origpath, strlen(buf) + strlen(statbuf));
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@ -1568,8 +1590,9 @@ static uint8_t ownerapi(ws_ctx_t *ws_ctx, const char *in, const char * const use
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"Connection: close\r\n"
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"Content-type: text/plain\r\n"
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"Content-length: 6\r\n"
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"%s"
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"\r\n"
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"200 OK");
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"200 OK", extra_headers ? extra_headers : "");
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ws_send(ws_ctx, buf, strlen(buf));
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weblog(200, wsthread_handler_id, 0, origip, ip, user, 1, origpath, strlen(buf));
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@ -1585,8 +1608,9 @@ nope:
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"Server: KasmVNC/4.0\r\n"
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"Connection: close\r\n"
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"Content-type: text/plain\r\n"
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"%s"
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"\r\n"
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"400 Bad Request");
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"400 Bad Request", extra_headers ? extra_headers : "");
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ws_send(ws_ctx, buf, strlen(buf));
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weblog(400, wsthread_handler_id, 0, origip, ip, user, 1, origpath, strlen(buf));
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return 1;
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@ -1596,8 +1620,9 @@ timeout:
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"Server: KasmVNC/4.0\r\n"
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"Connection: close\r\n"
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"Content-type: text/plain\r\n"
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"%s"
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"\r\n"
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"503 Service Unavailable");
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"503 Service Unavailable", extra_headers ? extra_headers : "");
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ws_send(ws_ctx, buf, strlen(buf));
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weblog(503, wsthread_handler_id, 0, origip, ip, user, 1, origpath, strlen(buf));
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return 1;
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@ -1723,7 +1748,8 @@ ws_ctx_t *do_handshake(int sock, char * const ip) {
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wserr("Authentication attempt failed, BasicAuth required, but client didn't send any\n");
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sprintf(response, "HTTP/1.1 401 Unauthorized\r\n"
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"WWW-Authenticate: Basic realm=\"Websockify\"\r\n"
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"\r\n");
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"%s"
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"\r\n", extra_headers ? extra_headers : "");
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ws_send(ws_ctx, response, strlen(response));
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weblog(401, wsthread_handler_id, 0, origip, ip, "-", 1, url, strlen(response));
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free_ws_ctx(ws_ctx);
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@ -1805,7 +1831,8 @@ ws_ctx_t *do_handshake(int sock, char * const ip) {
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wserr("Authentication attempt failed, wrong password for user %s\n", inuser);
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bl_addFailure(ip);
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sprintf(response, "HTTP/1.1 401 Forbidden\r\n"
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"\r\n");
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"%s"
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"\r\n", extra_headers ? extra_headers : "");
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ws_send(ws_ctx, response, strlen(response));
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weblog(401, wsthread_handler_id, 0, origip, ip, inuser, 1, url, strlen(response));
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free_ws_ctx(ws_ctx);
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@ -1829,8 +1856,9 @@ ws_ctx_t *do_handshake(int sock, char * const ip) {
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"Server: KasmVNC/4.0\r\n"
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"Connection: close\r\n"
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"Content-type: text/plain\r\n"
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"%s"
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"\r\n"
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"401 Unauthorized");
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"401 Unauthorized", extra_headers ? extra_headers : "");
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ws_send(ws_ctx, response, strlen(response));
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weblog(401, wsthread_handler_id, 0, origip, ip, inuser, 1, url, strlen(response));
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goto done;
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@ -110,6 +110,11 @@ Run a mini-HTTP server which serves files from the given directory. Normally
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the directory will contain the kasmweb client. It will use the websocket port.
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.
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.TP
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.B \-H \fIheader=val\fP
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Append this header to all HTTP responses (file and API). May be given multiple
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times.
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.
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.TP
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.B \-rfbauth \fIpasswd-file\fP, \-PasswordFile \fIpasswd-file\fP
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Password file for VNC authentication. There is no default, you should
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specify the password file explicitly. Password file should be created with
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@ -155,6 +155,49 @@ static char displayNumStr[16];
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static int vncVerbose = DEFAULT_LOG_VERBOSITY;
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char *extra_headers = NULL;
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unsigned extra_headers_len = 0;
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static unsigned
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add_extra_headers(const char * const arg)
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{
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unsigned i, found = 0;
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const char *sep;
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for (i = 0; arg[i]; i++) {
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if (arg[i] == '=') {
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found++;
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sep = &arg[i];
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}
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}
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if (found != 1)
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return 0;
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const unsigned len = strlen(arg);
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if (len < 3)
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return 0;
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if (arg[0] == '=' || arg[len - 1] == '=')
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return 0;
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extra_headers = realloc(extra_headers, extra_headers_len + 4 + len);
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extra_headers[extra_headers_len] = '\0';
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char tmp[len + 3];
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const unsigned firstlen = sep - arg;
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memcpy(tmp, arg, firstlen);
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tmp[firstlen] = ':';
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tmp[firstlen + 1] = ' ';
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memcpy(&tmp[firstlen + 2], sep + 1, len - firstlen - 1);
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tmp[len + 1] = '\r';
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tmp[len + 2] = '\n';
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memcpy(&extra_headers[extra_headers_len], tmp, len + 3);
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extra_headers_len += len + 3;
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extra_headers[extra_headers_len] = '\0';
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return 1;
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}
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static void
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vncPrintBanner(void)
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@ -319,6 +362,7 @@ void ddxUseMsg(void)
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ErrorF("-depth D set screen 0's depth\n");
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ErrorF("-pixelformat fmt set pixel format (rgbNNN or bgrNNN)\n");
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ErrorF("-inetd has been launched from inetd\n");
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ErrorF("-H header=val append this header to all HTTP responses\n");
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ErrorF("-noclipboard disable clipboard settings modification via vncconfig utility\n");
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ErrorF("-verbose [n] verbose startup messages\n");
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ErrorF("-quiet minimal startup messages\n");
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@ -530,6 +574,17 @@ ddxProcessArgument(int argc, char *argv[], int i)
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return 2;
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}
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if (strcmp(argv[i], "-H") == 0)
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{
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fail_unless_args(argc, i, 1);
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++i;
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if (!add_extra_headers(argv[i])) {
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ErrorF("Invalid argument\n");
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return 0;
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}
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return 2;
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}
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if (strcmp(argv[i], "-pixelformat") == 0)
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{
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char rgbbgr[4];
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