forked from svrjs/svrjs
Remove redundant fs.stat in static file serving function
This commit is contained in:
parent
e584cce286
commit
80943bf695
1 changed files with 179 additions and 208 deletions
387
svr.js
387
svr.js
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@ -3799,195 +3799,107 @@ if (!cluster.isPrimary) {
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if (!acceptEncoding) acceptEncoding = "";
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// Check if the requested file exists and handle errors
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fs.stat(readFrom, function (err, stats) {
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if (err) {
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if (err.code == "ENOENT") {
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callServerError(404);
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serverconsole.errmessage("Resource not found.");
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} else if (err.code == "ENOTDIR") {
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callServerError(404); // Assume that file doesn't exist.
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serverconsole.errmessage("Resource not found.");
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} else if (err.code == "EACCES") {
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callServerError(403);
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serverconsole.errmessage("Access denied.");
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} else if (err.code == "ENAMETOOLONG") {
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callServerError(414);
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} else if (err.code == "EMFILE") {
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callServerError(503);
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} else if (err.code == "ELOOP") {
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callServerError(508); // The symbolic link loop is detected during file system operations.
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serverconsole.errmessage("Symbolic link loop detected.");
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} else {
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callServerError(500, err);
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}
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// Check if the requested resource is a file
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if (!stats.isFile()) {
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callServerError(501);
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serverconsole.errmessage("SVR.JS doesn't support block devices, character devices, FIFOs nor sockets.");
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return;
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}
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var filelen = stats.size;
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// ETag code
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var fileETag = undefined;
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if (configJSON.enableETag == undefined || configJSON.enableETag) {
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fileETag = generateETag(href, stats);
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// Check if the client's request matches the ETag value (If-None-Match)
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var clientETag = req.headers["if-none-match"];
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if (clientETag === fileETag) {
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var headers = getCustomHeaders();
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headers.ETag = clientETag;
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res.writeHead(304, http.STATUS_CODES[304], headers);
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res.end();
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return;
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}
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// Check if the requested resource is a file
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if (stats.isDirectory()) {
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callServerError(501);
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serverconsole.errmessage("SVR.JS expected file but got directory instead.");
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return;
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} else if (!stats.isFile()) {
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callServerError(501);
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serverconsole.errmessage("SVR.JS doesn't support block devices, character devices, FIFOs nor sockets.");
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// Check if the client's request doesn't match the ETag value (If-Match)
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var ifMatchETag = req.headers["if-match"];
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if (ifMatchETag && ifMatchETag !== "*" && ifMatchETag !== fileETag) {
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var headers = getCustomHeaders();
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headers.ETag = clientETag;
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callServerError(412, headers);
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return;
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}
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}
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var filelen = stats.size;
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// ETag code
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var fileETag = undefined;
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if (configJSON.enableETag == undefined || configJSON.enableETag) {
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fileETag = generateETag(href, stats);
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// Check if the client's request matches the ETag value (If-None-Match)
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var clientETag = req.headers["if-none-match"];
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if (clientETag === fileETag) {
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var headers = getCustomHeaders();
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headers.ETag = clientETag;
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res.writeHead(304, http.STATUS_CODES[304], headers);
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res.end();
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return;
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}
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// Check if the client's request doesn't match the ETag value (If-Match)
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var ifMatchETag = req.headers["if-match"];
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if (ifMatchETag && ifMatchETag !== "*" && ifMatchETag !== fileETag) {
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var headers = getCustomHeaders();
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headers.ETag = clientETag;
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callServerError(412, headers);
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return;
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// Helper function to check if compression is allowed for the file
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function canCompress(path, list) {
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var canCompress = true;
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for (var i = 0; i < list.length; i++) {
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if (createRegex(list[i], true).test(path)) {
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canCompress = false;
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break;
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}
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}
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return canCompress;
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}
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// Helper function to check if compression is allowed for the file
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function canCompress(path, list) {
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var canCompress = true;
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for (var i = 0; i < list.length; i++) {
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if (createRegex(list[i], true).test(path)) {
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canCompress = false;
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break;
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}
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}
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return canCompress;
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}
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var isCompressable = true;
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try {
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isCompressable = canCompress(href, dontCompress);
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} catch (err) {
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callServerError(500, err);
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return;
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}
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var isCompressable = true;
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// Check for browser quirks and adjust compression accordingly
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if (ext != "html" && ext != "htm" && ext != "xhtml" && ext != "xht" && ext != "shtml" && /^Mozilla\/4\.[0-9]+(( *\[[^)]*\] *| *)\([^)\]]*\))? *$/.test(req.headers["user-agent"]) && !(/https?:\/\/|[bB][oO][tT]|[sS][pP][iI][dD][eE][rR]|[sS][uU][rR][vV][eE][yY]|MSIE/.test(req.headers["user-agent"]))) {
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isCompressable = false; // Netscape 4.x doesn't handle compressed data properly outside of HTML documents.
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} else if (/^Mozilla\/4\.0[6-8](( *\[[^)]*\] *| *)\([^)\]]*\))? *$/.test(req.headers["user-agent"]) && !(/https?:\/\/|[bB][oO][tT]|[sS][pP][iI][dD][eE][rR]|[sS][uU][rR][vV][eE][yY]|MSIE/.test(req.headers["user-agent"]))) {
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isCompressable = false; // Netscape 4.06-4.08 doesn't handle compressed data properly.
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} else if (ext != "html" && ext != "htm" && ext != "xhtml" && ext != "xht" && ext != "shtml" && /^w3m\/[^ ]*$/.test(req.headers["user-agent"])) {
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isCompressable = false; // w3m doesn't handle compressed data properly outside of HTML documents.
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}
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// Handle partial content request
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if (ext != "html" && req.headers["range"]) {
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try {
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isCompressable = canCompress(href, dontCompress);
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} catch (err) {
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callServerError(500, err);
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return;
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}
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// Check for browser quirks and adjust compression accordingly
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if (ext != "html" && ext != "htm" && ext != "xhtml" && ext != "xht" && ext != "shtml" && /^Mozilla\/4\.[0-9]+(( *\[[^)]*\] *| *)\([^)\]]*\))? *$/.test(req.headers["user-agent"]) && !(/https?:\/\/|[bB][oO][tT]|[sS][pP][iI][dD][eE][rR]|[sS][uU][rR][vV][eE][yY]|MSIE/.test(req.headers["user-agent"]))) {
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isCompressable = false; // Netscape 4.x doesn't handle compressed data properly outside of HTML documents.
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} else if (/^Mozilla\/4\.0[6-8](( *\[[^)]*\] *| *)\([^)\]]*\))? *$/.test(req.headers["user-agent"]) && !(/https?:\/\/|[bB][oO][tT]|[sS][pP][iI][dD][eE][rR]|[sS][uU][rR][vV][eE][yY]|MSIE/.test(req.headers["user-agent"]))) {
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isCompressable = false; // Netscape 4.06-4.08 doesn't handle compressed data properly.
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} else if (ext != "html" && ext != "htm" && ext != "xhtml" && ext != "xht" && ext != "shtml" && /^w3m\/[^ ]*$/.test(req.headers["user-agent"])) {
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isCompressable = false; // w3m doesn't handle compressed data properly outside of HTML documents.
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}
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// Handle partial content request
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if (ext != "html" && req.headers["range"]) {
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try {
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var rhd = getCustomHeaders();
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rhd["Accept-Ranges"] = "bytes";
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rhd["Content-Range"] = "bytes */" + filelen;
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var regexmatch = req.headers["range"].match(/bytes=([0-9]*)-([0-9]*)/);
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if (!regexmatch) {
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var rhd = getCustomHeaders();
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rhd["Accept-Ranges"] = "bytes";
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rhd["Content-Range"] = "bytes */" + filelen;
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var regexmatch = req.headers["range"].match(/bytes=([0-9]*)-([0-9]*)/);
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if (!regexmatch) {
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callServerError(416, rhd);
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} else {
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// Process the partial content request
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var beginOrig = regexmatch[1];
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var endOrig = regexmatch[2];
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var begin = 0;
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var end = filelen - 1;
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if (beginOrig == "" && endOrig == "") {
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callServerError(416, rhd);
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return;
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} else if (beginOrig == "") {
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begin = end - parseInt(endOrig) + 1;
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} else {
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// Process the partial content request
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var beginOrig = regexmatch[1];
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var endOrig = regexmatch[2];
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var begin = 0;
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var end = filelen - 1;
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if (beginOrig == "" && endOrig == "") {
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callServerError(416, rhd);
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return;
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} else if (beginOrig == "") {
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begin = end - parseInt(endOrig) + 1;
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} else {
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begin = parseInt(beginOrig);
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if (endOrig != "") end = parseInt(endOrig);
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}
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if (begin > end || begin < 0 || begin > filelen - 1) {
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callServerError(416, rhd);
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return;
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}
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if (end > filelen - 1) end = filelen - 1;
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rhd["Content-Range"] = "bytes " + begin + "-" + end + "/" + filelen;
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rhd["Content-Length"] = end - begin + 1;
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if (!(mime.contentType(ext) == false) && ext != "") rhd["Content-Type"] = mime.contentType(ext);
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if (fileETag) rhd["ETag"] = fileETag;
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if (req.method != "HEAD") {
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var readStream = fs.createReadStream(readFrom, {
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start: begin,
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end: end
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});
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readStream.on("error", function (err) {
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if (err.code == "ENOENT") {
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callServerError(404);
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serverconsole.errmessage("Resource not found.");
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} else if (err.code == "ENOTDIR") {
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callServerError(404); // Assume that file doesn't exist.
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serverconsole.errmessage("Resource not found.");
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} else if (err.code == "EACCES") {
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callServerError(403);
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serverconsole.errmessage("Access denied.");
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} else if (err.code == "ENAMETOOLONG") {
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callServerError(414);
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} else if (err.code == "EMFILE") {
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callServerError(503);
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} else if (err.code == "ELOOP") {
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callServerError(508); // The symbolic link loop is detected during file system operations.
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serverconsole.errmessage("Symbolic link loop detected.");
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} else {
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callServerError(500, err);
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}
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}).on("open", function () {
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try {
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res.writeHead(206, http.STATUS_CODES[206], rhd);
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readStream.pipe(res);
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serverconsole.resmessage("Client successfully received content.");
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} catch (err) {
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callServerError(500, err);
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}
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});
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} else {
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res.writeHead(206, http.STATUS_CODES[206], rhd);
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res.end();
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}
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begin = parseInt(beginOrig);
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if (endOrig != "") end = parseInt(endOrig);
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}
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} catch (err) {
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callServerError(500, err);
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}
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} else {
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try {
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var hdhds = getCustomHeaders();
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if (configJSON.enableCompression === true && ext != "br" && filelen > 256 && isCompressable && zlib.createBrotliCompress && acceptEncoding.match(/\bbr\b/)) {
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hdhds["Content-Encoding"] = "br";
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} else if (configJSON.enableCompression === true && ext != "zip" && filelen > 256 && isCompressable && acceptEncoding.match(/\bdeflate\b/)) {
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hdhds["Content-Encoding"] = "deflate";
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} else if (configJSON.enableCompression === true && ext != "gz" && filelen > 256 && isCompressable && acceptEncoding.match(/\bgzip\b/)) {
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hdhds["Content-Encoding"] = "gzip";
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} else {
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if (ext == "html") {
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hdhds["Content-Length"] = head.length + filelen + foot.length;
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} else {
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hdhds["Content-Length"] = filelen;
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}
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if (begin > end || begin < 0 || begin > filelen - 1) {
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callServerError(416, rhd);
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return;
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}
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if (ext != "html") hdhds["Accept-Ranges"] = "bytes";
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delete hdhds["Content-Type"];
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if (!(mime.contentType(ext) == false) && ext != "") hdhds["Content-Type"] = mime.contentType(ext);
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if (fileETag) hdhds["ETag"] = fileETag;
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if (end > filelen - 1) end = filelen - 1;
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rhd["Content-Range"] = "bytes " + begin + "-" + end + "/" + filelen;
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rhd["Content-Length"] = end - begin + 1;
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if (!(mime.contentType(ext) == false) && ext != "") rhd["Content-Type"] = mime.contentType(ext);
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if (fileETag) rhd["ETag"] = fileETag;
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if (req.method != "HEAD") {
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var readStream = fs.createReadStream(readFrom);
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var readStream = fs.createReadStream(readFrom, {
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start: begin,
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end: end
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});
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readStream.on("error", function (err) {
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if (err.code == "ENOENT") {
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callServerError(404);
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@ -4010,52 +3922,111 @@ if (!cluster.isPrimary) {
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}
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}).on("open", function () {
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try {
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res.writeHead(200, http.STATUS_CODES[200], hdhds);
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var resStream = {};
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if (configJSON.enableCompression === true && ext != "br" && filelen > 256 && isCompressable && zlib.createBrotliCompress && acceptEncoding.match(/\bbr\b/)) {
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resStream = zlib.createBrotliCompress();
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resStream.pipe(res);
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} else if (configJSON.enableCompression === true && ext != "zip" && filelen > 256 && isCompressable && acceptEncoding.match(/\bdeflate\b/)) {
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resStream = zlib.createDeflateRaw();
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resStream.pipe(res);
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} else if (configJSON.enableCompression === true && ext != "gz" && filelen > 256 && isCompressable && acceptEncoding.match(/\bgzip\b/)) {
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resStream = zlib.createGzip();
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resStream.pipe(res);
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} else {
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resStream = res;
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}
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if (ext == "html") {
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function afterWriteCallback() {
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readStream.on("end", function () {
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resStream.end(foot);
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});
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readStream.pipe(resStream, {
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end: false
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});
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}
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if (!resStream.write(head)) {
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resStream.on("drain", afterWriteCallback);
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} else {
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process.nextTick(afterWriteCallback);
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}
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} else {
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readStream.pipe(resStream);
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}
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res.writeHead(206, http.STATUS_CODES[206], rhd);
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readStream.pipe(res);
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serverconsole.resmessage("Client successfully received content.");
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} catch (err) {
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callServerError(500, err);
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}
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});
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} else {
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res.writeHead(200, http.STATUS_CODES[200], hdhds);
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res.writeHead(206, http.STATUS_CODES[206], rhd);
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res.end();
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serverconsole.resmessage("Client successfully received content.");
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}
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} catch (err) {
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callServerError(500, err);
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}
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} catch (err) {
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callServerError(500, err);
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}
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});
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} else {
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try {
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var hdhds = getCustomHeaders();
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if (configJSON.enableCompression === true && ext != "br" && filelen > 256 && isCompressable && zlib.createBrotliCompress && acceptEncoding.match(/\bbr\b/)) {
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hdhds["Content-Encoding"] = "br";
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} else if (configJSON.enableCompression === true && ext != "zip" && filelen > 256 && isCompressable && acceptEncoding.match(/\bdeflate\b/)) {
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hdhds["Content-Encoding"] = "deflate";
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} else if (configJSON.enableCompression === true && ext != "gz" && filelen > 256 && isCompressable && acceptEncoding.match(/\bgzip\b/)) {
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hdhds["Content-Encoding"] = "gzip";
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} else {
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if (ext == "html") {
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hdhds["Content-Length"] = head.length + filelen + foot.length;
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} else {
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hdhds["Content-Length"] = filelen;
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}
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}
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if (ext != "html") hdhds["Accept-Ranges"] = "bytes";
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delete hdhds["Content-Type"];
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if (!(mime.contentType(ext) == false) && ext != "") hdhds["Content-Type"] = mime.contentType(ext);
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if (fileETag) hdhds["ETag"] = fileETag;
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if (req.method != "HEAD") {
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var readStream = fs.createReadStream(readFrom);
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readStream.on("error", function (err) {
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if (err.code == "ENOENT") {
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callServerError(404);
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serverconsole.errmessage("Resource not found.");
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} else if (err.code == "ENOTDIR") {
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callServerError(404); // Assume that file doesn't exist.
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serverconsole.errmessage("Resource not found.");
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} else if (err.code == "EACCES") {
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callServerError(403);
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serverconsole.errmessage("Access denied.");
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} else if (err.code == "ENAMETOOLONG") {
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callServerError(414);
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} else if (err.code == "EMFILE") {
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callServerError(503);
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} else if (err.code == "ELOOP") {
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callServerError(508); // The symbolic link loop is detected during file system operations.
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serverconsole.errmessage("Symbolic link loop detected.");
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} else {
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callServerError(500, err);
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}
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}).on("open", function () {
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try {
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res.writeHead(200, http.STATUS_CODES[200], hdhds);
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var resStream = {};
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if (configJSON.enableCompression === true && ext != "br" && filelen > 256 && isCompressable && zlib.createBrotliCompress && acceptEncoding.match(/\bbr\b/)) {
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resStream = zlib.createBrotliCompress();
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resStream.pipe(res);
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} else if (configJSON.enableCompression === true && ext != "zip" && filelen > 256 && isCompressable && acceptEncoding.match(/\bdeflate\b/)) {
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resStream = zlib.createDeflateRaw();
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resStream.pipe(res);
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} else if (configJSON.enableCompression === true && ext != "gz" && filelen > 256 && isCompressable && acceptEncoding.match(/\bgzip\b/)) {
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resStream = zlib.createGzip();
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resStream.pipe(res);
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} else {
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||||
resStream = res;
|
||||
}
|
||||
if (ext == "html") {
|
||||
function afterWriteCallback() {
|
||||
readStream.on("end", function () {
|
||||
resStream.end(foot);
|
||||
});
|
||||
readStream.pipe(resStream, {
|
||||
end: false
|
||||
});
|
||||
}
|
||||
if (!resStream.write(head)) {
|
||||
resStream.on("drain", afterWriteCallback);
|
||||
} else {
|
||||
process.nextTick(afterWriteCallback);
|
||||
}
|
||||
} else {
|
||||
readStream.pipe(resStream);
|
||||
}
|
||||
serverconsole.resmessage("Client successfully received content.");
|
||||
} catch (err) {
|
||||
callServerError(500, err);
|
||||
}
|
||||
});
|
||||
} else {
|
||||
res.writeHead(200, http.STATUS_CODES[200], hdhds);
|
||||
res.end();
|
||||
serverconsole.resmessage("Client successfully received content.");
|
||||
}
|
||||
} catch (err) {
|
||||
callServerError(500, err);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
});
|
||||
|
|
|
|||
Reference in a new issue