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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
commit26a029d407be480d791972afb5975cf62c9360a6 (patch)
treef435a8308119effd964b339f76abb83a57c29483 /netwerk/base/nsURLHelper.cpp
parentInitial commit. (diff)
downloadfirefox-26a029d407be480d791972afb5975cf62c9360a6.tar.xz
firefox-26a029d407be480d791972afb5975cf62c9360a6.zip
Adding upstream version 124.0.1.upstream/124.0.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'netwerk/base/nsURLHelper.cpp')
-rw-r--r--netwerk/base/nsURLHelper.cpp1356
1 files changed, 1356 insertions, 0 deletions
diff --git a/netwerk/base/nsURLHelper.cpp b/netwerk/base/nsURLHelper.cpp
new file mode 100644
index 0000000000..3850c6865a
--- /dev/null
+++ b/netwerk/base/nsURLHelper.cpp
@@ -0,0 +1,1356 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim:set ts=4 sw=2 sts=2 et cindent: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "nsURLHelper.h"
+
+#include "mozilla/Encoding.h"
+#include "mozilla/RangedPtr.h"
+#include "mozilla/TextUtils.h"
+
+#include <algorithm>
+#include <iterator>
+
+#include "nsASCIIMask.h"
+#include "nsIFile.h"
+#include "nsIURLParser.h"
+#include "nsCOMPtr.h"
+#include "nsCRT.h"
+#include "nsNetCID.h"
+#include "mozilla/Preferences.h"
+#include "prnetdb.h"
+#include "mozilla/StaticPrefs_network.h"
+#include "mozilla/Tokenizer.h"
+#include "nsEscape.h"
+#include "nsDOMString.h"
+#include "mozilla/net/rust_helper.h"
+#include "mozilla/net/DNS.h"
+
+using namespace mozilla;
+
+//----------------------------------------------------------------------------
+// Init/Shutdown
+//----------------------------------------------------------------------------
+
+static bool gInitialized = false;
+static StaticRefPtr<nsIURLParser> gNoAuthURLParser;
+static StaticRefPtr<nsIURLParser> gAuthURLParser;
+static StaticRefPtr<nsIURLParser> gStdURLParser;
+
+static void InitGlobals() {
+ nsCOMPtr<nsIURLParser> parser;
+
+ parser = do_GetService(NS_NOAUTHURLPARSER_CONTRACTID);
+ NS_ASSERTION(parser, "failed getting 'noauth' url parser");
+ if (parser) {
+ gNoAuthURLParser = parser;
+ }
+
+ parser = do_GetService(NS_AUTHURLPARSER_CONTRACTID);
+ NS_ASSERTION(parser, "failed getting 'auth' url parser");
+ if (parser) {
+ gAuthURLParser = parser;
+ }
+
+ parser = do_GetService(NS_STDURLPARSER_CONTRACTID);
+ NS_ASSERTION(parser, "failed getting 'std' url parser");
+ if (parser) {
+ gStdURLParser = parser;
+ }
+
+ gInitialized = true;
+}
+
+void net_ShutdownURLHelper() {
+ if (gInitialized) {
+ gInitialized = false;
+ }
+ gNoAuthURLParser = nullptr;
+ gAuthURLParser = nullptr;
+ gStdURLParser = nullptr;
+}
+
+//----------------------------------------------------------------------------
+// nsIURLParser getters
+//----------------------------------------------------------------------------
+
+nsIURLParser* net_GetAuthURLParser() {
+ if (!gInitialized) InitGlobals();
+ return gAuthURLParser;
+}
+
+nsIURLParser* net_GetNoAuthURLParser() {
+ if (!gInitialized) InitGlobals();
+ return gNoAuthURLParser;
+}
+
+nsIURLParser* net_GetStdURLParser() {
+ if (!gInitialized) InitGlobals();
+ return gStdURLParser;
+}
+
+//---------------------------------------------------------------------------
+// GetFileFromURLSpec implementations
+//---------------------------------------------------------------------------
+nsresult net_GetURLSpecFromDir(nsIFile* aFile, nsACString& result) {
+ nsAutoCString escPath;
+ nsresult rv = net_GetURLSpecFromActualFile(aFile, escPath);
+ if (NS_FAILED(rv)) return rv;
+
+ if (escPath.Last() != '/') {
+ escPath += '/';
+ }
+
+ result = escPath;
+ return NS_OK;
+}
+
+nsresult net_GetURLSpecFromFile(nsIFile* aFile, nsACString& result) {
+ nsAutoCString escPath;
+ nsresult rv = net_GetURLSpecFromActualFile(aFile, escPath);
+ if (NS_FAILED(rv)) return rv;
+
+ // if this file references a directory, then we need to ensure that the
+ // URL ends with a slash. this is important since it affects the rules
+ // for relative URL resolution when this URL is used as a base URL.
+ // if the file does not exist, then we make no assumption about its type,
+ // and simply leave the URL unmodified.
+ if (escPath.Last() != '/') {
+ bool dir;
+ rv = aFile->IsDirectory(&dir);
+ if (NS_SUCCEEDED(rv) && dir) escPath += '/';
+ }
+
+ result = escPath;
+ return NS_OK;
+}
+
+//----------------------------------------------------------------------------
+// file:// URL parsing
+//----------------------------------------------------------------------------
+
+nsresult net_ParseFileURL(const nsACString& inURL, nsACString& outDirectory,
+ nsACString& outFileBaseName,
+ nsACString& outFileExtension) {
+ nsresult rv;
+
+ if (inURL.Length() >
+ (uint32_t)StaticPrefs::network_standard_url_max_length()) {
+ return NS_ERROR_MALFORMED_URI;
+ }
+
+ outDirectory.Truncate();
+ outFileBaseName.Truncate();
+ outFileExtension.Truncate();
+
+ const nsPromiseFlatCString& flatURL = PromiseFlatCString(inURL);
+ const char* url = flatURL.get();
+
+ nsAutoCString scheme;
+ rv = net_ExtractURLScheme(flatURL, scheme);
+ if (NS_FAILED(rv)) return rv;
+
+ if (!scheme.EqualsLiteral("file")) {
+ NS_ERROR("must be a file:// url");
+ return NS_ERROR_UNEXPECTED;
+ }
+
+ nsIURLParser* parser = net_GetNoAuthURLParser();
+ NS_ENSURE_TRUE(parser, NS_ERROR_UNEXPECTED);
+
+ uint32_t pathPos, filepathPos, directoryPos, basenamePos, extensionPos;
+ int32_t pathLen, filepathLen, directoryLen, basenameLen, extensionLen;
+
+ // invoke the parser to extract the URL path
+ rv = parser->ParseURL(url, flatURL.Length(), nullptr,
+ nullptr, // don't care about scheme
+ nullptr, nullptr, // don't care about authority
+ &pathPos, &pathLen);
+ if (NS_FAILED(rv)) return rv;
+
+ // invoke the parser to extract filepath from the path
+ rv = parser->ParsePath(url + pathPos, pathLen, &filepathPos, &filepathLen,
+ nullptr, nullptr, // don't care about query
+ nullptr, nullptr); // don't care about ref
+ if (NS_FAILED(rv)) return rv;
+
+ filepathPos += pathPos;
+
+ // invoke the parser to extract the directory and filename from filepath
+ rv = parser->ParseFilePath(url + filepathPos, filepathLen, &directoryPos,
+ &directoryLen, &basenamePos, &basenameLen,
+ &extensionPos, &extensionLen);
+ if (NS_FAILED(rv)) return rv;
+
+ if (directoryLen > 0) {
+ outDirectory = Substring(inURL, filepathPos + directoryPos, directoryLen);
+ }
+ if (basenameLen > 0) {
+ outFileBaseName = Substring(inURL, filepathPos + basenamePos, basenameLen);
+ }
+ if (extensionLen > 0) {
+ outFileExtension =
+ Substring(inURL, filepathPos + extensionPos, extensionLen);
+ }
+ // since we are using a no-auth url parser, there will never be a host
+ // XXX not strictly true... file://localhost/foo/bar.html is a valid URL
+
+ return NS_OK;
+}
+
+//----------------------------------------------------------------------------
+// path manipulation functions
+//----------------------------------------------------------------------------
+
+// Replace all /./ with a / while resolving URLs
+// But only till #?
+void net_CoalesceDirs(netCoalesceFlags flags, char* path) {
+ /* Stolen from the old netlib's mkparse.c.
+ *
+ * modifies a url of the form /foo/../foo1 -> /foo1
+ * and /foo/./foo1 -> /foo/foo1
+ * and /foo/foo1/.. -> /foo/
+ */
+ char* fwdPtr = path;
+ char* urlPtr = path;
+ char* lastslash = path;
+ uint32_t traversal = 0;
+ uint32_t special_ftp_len = 0;
+
+ /* Remember if this url is a special ftp one: */
+ if (flags & NET_COALESCE_DOUBLE_SLASH_IS_ROOT) {
+ /* some schemes (for example ftp) have the speciality that
+ the path can begin // or /%2F to mark the root of the
+ servers filesystem, a simple / only marks the root relative
+ to the user loging in. We remember the length of the marker */
+ if (nsCRT::strncasecmp(path, "/%2F", 4) == 0) {
+ special_ftp_len = 4;
+ } else if (strncmp(path, "//", 2) == 0) {
+ special_ftp_len = 2;
+ }
+ }
+
+ /* find the last slash before # or ? */
+ for (; (*fwdPtr != '\0') && (*fwdPtr != '?') && (*fwdPtr != '#'); ++fwdPtr) {
+ }
+
+ /* found nothing, but go back one only */
+ /* if there is something to go back to */
+ if (fwdPtr != path && *fwdPtr == '\0') {
+ --fwdPtr;
+ }
+
+ /* search the slash */
+ for (; (fwdPtr != path) && (*fwdPtr != '/'); --fwdPtr) {
+ }
+ lastslash = fwdPtr;
+ fwdPtr = path;
+
+ /* replace all %2E or %2e with . in the path */
+ /* but stop at lastchar if non null */
+ for (; (*fwdPtr != '\0') && (*fwdPtr != '?') && (*fwdPtr != '#') &&
+ (*lastslash == '\0' || fwdPtr != lastslash);
+ ++fwdPtr) {
+ if (*fwdPtr == '%' && *(fwdPtr + 1) == '2' &&
+ (*(fwdPtr + 2) == 'E' || *(fwdPtr + 2) == 'e')) {
+ *urlPtr++ = '.';
+ ++fwdPtr;
+ ++fwdPtr;
+ } else {
+ *urlPtr++ = *fwdPtr;
+ }
+ }
+ // Copy remaining stuff past the #?;
+ for (; *fwdPtr != '\0'; ++fwdPtr) {
+ *urlPtr++ = *fwdPtr;
+ }
+ *urlPtr = '\0'; // terminate the url
+
+ // start again, this time for real
+ fwdPtr = path;
+ urlPtr = path;
+
+ for (; (*fwdPtr != '\0') && (*fwdPtr != '?') && (*fwdPtr != '#'); ++fwdPtr) {
+ if (*fwdPtr == '/' && *(fwdPtr + 1) == '.' && *(fwdPtr + 2) == '/') {
+ // remove . followed by slash
+ ++fwdPtr;
+ } else if (*fwdPtr == '/' && *(fwdPtr + 1) == '.' && *(fwdPtr + 2) == '.' &&
+ (*(fwdPtr + 3) == '/' ||
+ *(fwdPtr + 3) == '\0' || // This will take care of
+ *(fwdPtr + 3) == '?' || // something like foo/bar/..#sometag
+ *(fwdPtr + 3) == '#')) {
+ // remove foo/..
+ // reverse the urlPtr to the previous slash if possible
+ // if url does not allow relative root then drop .. above root
+ // otherwise retain them in the path
+ if (traversal > 0 || !(flags & NET_COALESCE_ALLOW_RELATIVE_ROOT)) {
+ if (urlPtr != path) urlPtr--; // we must be going back at least by one
+ for (; *urlPtr != '/' && urlPtr != path; urlPtr--) {
+ ; // null body
+ }
+ --traversal; // count back
+ // forward the fwdPtr past the ../
+ fwdPtr += 2;
+ // if we have reached the beginning of the path
+ // while searching for the previous / and we remember
+ // that it is an url that begins with /%2F then
+ // advance urlPtr again by 3 chars because /%2F already
+ // marks the root of the path
+ if (urlPtr == path && special_ftp_len > 3) {
+ ++urlPtr;
+ ++urlPtr;
+ ++urlPtr;
+ }
+ // special case if we have reached the end
+ // to preserve the last /
+ if (*fwdPtr == '.' && *(fwdPtr + 1) == '\0') ++urlPtr;
+ } else {
+ // there are to much /.. in this path, just copy them instead.
+ // forward the urlPtr past the /.. and copying it
+
+ // However if we remember it is an url that starts with
+ // /%2F and urlPtr just points at the "F" of "/%2F" then do
+ // not overwrite it with the /, just copy .. and move forward
+ // urlPtr.
+ if (special_ftp_len > 3 && urlPtr == path + special_ftp_len - 1) {
+ ++urlPtr;
+ } else {
+ *urlPtr++ = *fwdPtr;
+ }
+ ++fwdPtr;
+ *urlPtr++ = *fwdPtr;
+ ++fwdPtr;
+ *urlPtr++ = *fwdPtr;
+ }
+ } else {
+ // count the hierachie, but only if we do not have reached
+ // the root of some special urls with a special root marker
+ if (*fwdPtr == '/' && *(fwdPtr + 1) != '.' &&
+ (special_ftp_len != 2 || *(fwdPtr + 1) != '/')) {
+ traversal++;
+ }
+ // copy the url incrementaly
+ *urlPtr++ = *fwdPtr;
+ }
+ }
+
+ /*
+ * Now lets remove trailing . case
+ * /foo/foo1/. -> /foo/foo1/
+ */
+
+ if ((urlPtr > (path + 1)) && (*(urlPtr - 1) == '.') &&
+ (*(urlPtr - 2) == '/')) {
+ urlPtr--;
+ }
+
+ // Copy remaining stuff past the #?;
+ for (; *fwdPtr != '\0'; ++fwdPtr) {
+ *urlPtr++ = *fwdPtr;
+ }
+ *urlPtr = '\0'; // terminate the url
+}
+
+//----------------------------------------------------------------------------
+// scheme fu
+//----------------------------------------------------------------------------
+
+static bool net_IsValidSchemeChar(const char aChar) {
+ return mozilla::net::rust_net_is_valid_scheme_char(aChar);
+}
+
+/* Extract URI-Scheme if possible */
+nsresult net_ExtractURLScheme(const nsACString& inURI, nsACString& scheme) {
+ nsACString::const_iterator start, end;
+ inURI.BeginReading(start);
+ inURI.EndReading(end);
+
+ // Strip C0 and space from begining
+ while (start != end) {
+ if ((uint8_t)*start > 0x20) {
+ break;
+ }
+ start++;
+ }
+
+ Tokenizer p(Substring(start, end), "\r\n\t");
+ p.Record();
+ if (!p.CheckChar(IsAsciiAlpha)) {
+ // First char must be alpha
+ return NS_ERROR_MALFORMED_URI;
+ }
+
+ while (p.CheckChar(net_IsValidSchemeChar) || p.CheckWhite()) {
+ // Skip valid scheme characters or \r\n\t
+ }
+
+ if (!p.CheckChar(':')) {
+ return NS_ERROR_MALFORMED_URI;
+ }
+
+ p.Claim(scheme);
+ scheme.StripTaggedASCII(ASCIIMask::MaskCRLFTab());
+ ToLowerCase(scheme);
+ return NS_OK;
+}
+
+bool net_IsValidScheme(const nsACString& scheme) {
+ return mozilla::net::rust_net_is_valid_scheme(&scheme);
+}
+
+bool net_IsAbsoluteURL(const nsACString& uri) {
+ nsACString::const_iterator start, end;
+ uri.BeginReading(start);
+ uri.EndReading(end);
+
+ // Strip C0 and space from begining
+ while (start != end) {
+ if ((uint8_t)*start > 0x20) {
+ break;
+ }
+ start++;
+ }
+
+ Tokenizer p(Substring(start, end), "\r\n\t");
+
+ // First char must be alpha
+ if (!p.CheckChar(IsAsciiAlpha)) {
+ return false;
+ }
+
+ while (p.CheckChar(net_IsValidSchemeChar) || p.CheckWhite()) {
+ // Skip valid scheme characters or \r\n\t
+ }
+ if (!p.CheckChar(':')) {
+ return false;
+ }
+ p.SkipWhites();
+
+ if (!p.CheckChar('/')) {
+ return false;
+ }
+ p.SkipWhites();
+
+ if (p.CheckChar('/')) {
+ // aSpec is really absolute. Ignore aBaseURI in this case
+ return true;
+ }
+ return false;
+}
+
+void net_FilterURIString(const nsACString& input, nsACString& result) {
+ result.Truncate();
+
+ const auto* start = input.BeginReading();
+ const auto* end = input.EndReading();
+
+ // Trim off leading and trailing invalid chars.
+ auto charFilter = [](char c) { return static_cast<uint8_t>(c) > 0x20; };
+ const auto* newStart = std::find_if(start, end, charFilter);
+ const auto* newEnd =
+ std::find_if(std::reverse_iterator<decltype(end)>(end),
+ std::reverse_iterator<decltype(newStart)>(newStart),
+ charFilter)
+ .base();
+
+ // Check if chars need to be stripped.
+ bool needsStrip = false;
+ const ASCIIMaskArray& mask = ASCIIMask::MaskCRLFTab();
+ for (const auto* itr = start; itr != end; ++itr) {
+ if (ASCIIMask::IsMasked(mask, *itr)) {
+ needsStrip = true;
+ break;
+ }
+ }
+
+ // Just use the passed in string rather than creating new copies if no
+ // changes are necessary.
+ if (newStart == start && newEnd == end && !needsStrip) {
+ result = input;
+ return;
+ }
+
+ result.Assign(Substring(newStart, newEnd));
+ if (needsStrip) {
+ result.StripTaggedASCII(mask);
+ }
+}
+
+nsresult net_FilterAndEscapeURI(const nsACString& aInput, uint32_t aFlags,
+ const ASCIIMaskArray& aFilterMask,
+ nsACString& aResult) {
+ aResult.Truncate();
+
+ const auto* start = aInput.BeginReading();
+ const auto* end = aInput.EndReading();
+
+ // Trim off leading and trailing invalid chars.
+ auto charFilter = [](char c) { return static_cast<uint8_t>(c) > 0x20; };
+ const auto* newStart = std::find_if(start, end, charFilter);
+ const auto* newEnd =
+ std::find_if(std::reverse_iterator<decltype(end)>(end),
+ std::reverse_iterator<decltype(newStart)>(newStart),
+ charFilter)
+ .base();
+
+ return NS_EscapeAndFilterURL(Substring(newStart, newEnd), aFlags,
+ &aFilterMask, aResult, fallible);
+}
+
+#if defined(XP_WIN)
+bool net_NormalizeFileURL(const nsACString& aURL, nsCString& aResultBuf) {
+ bool writing = false;
+
+ nsACString::const_iterator beginIter, endIter;
+ aURL.BeginReading(beginIter);
+ aURL.EndReading(endIter);
+
+ const char *s, *begin = beginIter.get();
+
+ for (s = begin; s != endIter.get(); ++s) {
+ if (*s == '\\') {
+ writing = true;
+ if (s > begin) aResultBuf.Append(begin, s - begin);
+ aResultBuf += '/';
+ begin = s + 1;
+ }
+ if (*s == '#') {
+ // Don't normalize any backslashes following the hash.
+ s = endIter.get();
+ break;
+ }
+ }
+ if (writing && s > begin) aResultBuf.Append(begin, s - begin);
+
+ return writing;
+}
+#endif
+
+//----------------------------------------------------------------------------
+// miscellaneous (i.e., stuff that should really be elsewhere)
+//----------------------------------------------------------------------------
+
+static inline void ToLower(char& c) {
+ if ((unsigned)(c - 'A') <= (unsigned)('Z' - 'A')) c += 'a' - 'A';
+}
+
+void net_ToLowerCase(char* str, uint32_t length) {
+ for (char* end = str + length; str < end; ++str) ToLower(*str);
+}
+
+void net_ToLowerCase(char* str) {
+ for (; *str; ++str) ToLower(*str);
+}
+
+char* net_FindCharInSet(const char* iter, const char* stop, const char* set) {
+ for (; iter != stop && *iter; ++iter) {
+ for (const char* s = set; *s; ++s) {
+ if (*iter == *s) return (char*)iter;
+ }
+ }
+ return (char*)iter;
+}
+
+char* net_FindCharNotInSet(const char* iter, const char* stop,
+ const char* set) {
+repeat:
+ for (const char* s = set; *s; ++s) {
+ if (*iter == *s) {
+ if (++iter == stop) break;
+ goto repeat;
+ }
+ }
+ return (char*)iter;
+}
+
+char* net_RFindCharNotInSet(const char* stop, const char* iter,
+ const char* set) {
+ --iter;
+ --stop;
+
+ if (iter == stop) return (char*)iter;
+
+repeat:
+ for (const char* s = set; *s; ++s) {
+ if (*iter == *s) {
+ if (--iter == stop) break;
+ goto repeat;
+ }
+ }
+ return (char*)iter;
+}
+
+#define HTTP_LWS " \t"
+
+// Return the index of the closing quote of the string, if any
+static uint32_t net_FindStringEnd(const nsCString& flatStr,
+ uint32_t stringStart, char stringDelim) {
+ NS_ASSERTION(stringStart < flatStr.Length() &&
+ flatStr.CharAt(stringStart) == stringDelim &&
+ (stringDelim == '"' || stringDelim == '\''),
+ "Invalid stringStart");
+
+ const char set[] = {stringDelim, '\\', '\0'};
+ do {
+ // stringStart points to either the start quote or the last
+ // escaped char (the char following a '\\')
+
+ // Write to searchStart here, so that when we get back to the
+ // top of the loop right outside this one we search from the
+ // right place.
+ uint32_t stringEnd = flatStr.FindCharInSet(set, stringStart + 1);
+ if (stringEnd == uint32_t(kNotFound)) return flatStr.Length();
+
+ if (flatStr.CharAt(stringEnd) == '\\') {
+ // Hit a backslash-escaped char. Need to skip over it.
+ stringStart = stringEnd + 1;
+ if (stringStart == flatStr.Length()) return stringStart;
+
+ // Go back to looking for the next escape or the string end
+ continue;
+ }
+
+ return stringEnd;
+
+ } while (true);
+
+ MOZ_ASSERT_UNREACHABLE("How did we get here?");
+ return flatStr.Length();
+}
+
+static uint32_t net_FindMediaDelimiter(const nsCString& flatStr,
+ uint32_t searchStart, char delimiter) {
+ do {
+ // searchStart points to the spot from which we should start looking
+ // for the delimiter.
+ const char delimStr[] = {delimiter, '"', '\0'};
+ uint32_t curDelimPos = flatStr.FindCharInSet(delimStr, searchStart);
+ if (curDelimPos == uint32_t(kNotFound)) return flatStr.Length();
+
+ char ch = flatStr.CharAt(curDelimPos);
+ if (ch == delimiter) {
+ // Found delimiter
+ return curDelimPos;
+ }
+
+ // We hit the start of a quoted string. Look for its end.
+ searchStart = net_FindStringEnd(flatStr, curDelimPos, ch);
+ if (searchStart == flatStr.Length()) return searchStart;
+
+ ++searchStart;
+
+ // searchStart now points to the first char after the end of the
+ // string, so just go back to the top of the loop and look for
+ // |delimiter| again.
+ } while (true);
+
+ MOZ_ASSERT_UNREACHABLE("How did we get here?");
+ return flatStr.Length();
+}
+
+// aOffset should be added to aCharsetStart and aCharsetEnd if this
+// function sets them.
+static void net_ParseMediaType(const nsACString& aMediaTypeStr,
+ nsACString& aContentType,
+ nsACString& aContentCharset, int32_t aOffset,
+ bool* aHadCharset, int32_t* aCharsetStart,
+ int32_t* aCharsetEnd, bool aStrict) {
+ const nsCString& flatStr = PromiseFlatCString(aMediaTypeStr);
+ const char* start = flatStr.get();
+ const char* end = start + flatStr.Length();
+
+ // Trim LWS leading and trailing whitespace from type.
+ const char* type = net_FindCharNotInSet(start, end, HTTP_LWS);
+ const char* typeEnd = net_FindCharInSet(type, end, HTTP_LWS ";");
+
+ const char* charset = "";
+ const char* charsetEnd = charset;
+ int32_t charsetParamStart = 0;
+ int32_t charsetParamEnd = 0;
+
+ uint32_t consumed = typeEnd - type;
+
+ // Iterate over parameters
+ bool typeHasCharset = false;
+ uint32_t paramStart = flatStr.FindChar(';', typeEnd - start);
+ if (paramStart != uint32_t(kNotFound)) {
+ // We have parameters. Iterate over them.
+ uint32_t curParamStart = paramStart + 1;
+ do {
+ uint32_t curParamEnd =
+ net_FindMediaDelimiter(flatStr, curParamStart, ';');
+
+ const char* paramName = net_FindCharNotInSet(
+ start + curParamStart, start + curParamEnd, HTTP_LWS);
+ static const char charsetStr[] = "charset=";
+ if (nsCRT::strncasecmp(paramName, charsetStr, sizeof(charsetStr) - 1) ==
+ 0) {
+ charset = paramName + sizeof(charsetStr) - 1;
+ charsetEnd = start + curParamEnd;
+ typeHasCharset = true;
+ charsetParamStart = curParamStart - 1;
+ charsetParamEnd = curParamEnd;
+ }
+
+ consumed = curParamEnd;
+ curParamStart = curParamEnd + 1;
+ } while (curParamStart < flatStr.Length());
+ }
+
+ bool charsetNeedsQuotedStringUnescaping = false;
+ if (typeHasCharset) {
+ // Trim LWS leading and trailing whitespace from charset.
+ charset = net_FindCharNotInSet(charset, charsetEnd, HTTP_LWS);
+ if (*charset == '"') {
+ charsetNeedsQuotedStringUnescaping = true;
+ charsetEnd =
+ start + net_FindStringEnd(flatStr, charset - start, *charset);
+ charset++;
+ NS_ASSERTION(charsetEnd >= charset, "Bad charset parsing");
+ } else {
+ charsetEnd = net_FindCharInSet(charset, charsetEnd, HTTP_LWS ";");
+ }
+ }
+
+ // if the server sent "*/*", it is meaningless, so do not store it.
+ // also, if type is the same as aContentType, then just update the
+ // charset. however, if charset is empty and aContentType hasn't
+ // changed, then don't wipe-out an existing aContentCharset. We
+ // also want to reject a mime-type if it does not include a slash.
+ // some servers give junk after the charset parameter, which may
+ // include a comma, so this check makes us a bit more tolerant.
+
+ if (type != typeEnd && memchr(type, '/', typeEnd - type) != nullptr &&
+ (aStrict ? (net_FindCharNotInSet(start + consumed, end, HTTP_LWS) == end)
+ : (strncmp(type, "*/*", typeEnd - type) != 0))) {
+ // Common case here is that aContentType is empty
+ bool eq = !aContentType.IsEmpty() &&
+ aContentType.Equals(Substring(type, typeEnd),
+ nsCaseInsensitiveCStringComparator);
+ if (!eq) {
+ aContentType.Assign(type, typeEnd - type);
+ ToLowerCase(aContentType);
+ }
+
+ if ((!eq && *aHadCharset) || typeHasCharset) {
+ *aHadCharset = true;
+ if (charsetNeedsQuotedStringUnescaping) {
+ // parameters using the "quoted-string" syntax need
+ // backslash-escapes to be unescaped (see RFC 2616 Section 2.2)
+ aContentCharset.Truncate();
+ for (const char* c = charset; c != charsetEnd; c++) {
+ if (*c == '\\' && c + 1 != charsetEnd) {
+ // eat escape
+ c++;
+ }
+ aContentCharset.Append(*c);
+ }
+ } else {
+ aContentCharset.Assign(charset, charsetEnd - charset);
+ }
+ if (typeHasCharset) {
+ *aCharsetStart = charsetParamStart + aOffset;
+ *aCharsetEnd = charsetParamEnd + aOffset;
+ }
+ }
+ // Only set a new charset position if this is a different type
+ // from the last one we had and it doesn't already have a
+ // charset param. If this is the same type, we probably want
+ // to leave the charset position on its first occurrence.
+ if (!eq && !typeHasCharset) {
+ int32_t charsetStart = int32_t(paramStart);
+ if (charsetStart == kNotFound) charsetStart = flatStr.Length();
+
+ *aCharsetEnd = *aCharsetStart = charsetStart + aOffset;
+ }
+ }
+}
+
+#undef HTTP_LWS
+
+void net_ParseContentType(const nsACString& aHeaderStr,
+ nsACString& aContentType, nsACString& aContentCharset,
+ bool* aHadCharset) {
+ int32_t dummy1, dummy2;
+ net_ParseContentType(aHeaderStr, aContentType, aContentCharset, aHadCharset,
+ &dummy1, &dummy2);
+}
+
+void net_ParseContentType(const nsACString& aHeaderStr,
+ nsACString& aContentType, nsACString& aContentCharset,
+ bool* aHadCharset, int32_t* aCharsetStart,
+ int32_t* aCharsetEnd) {
+ //
+ // Augmented BNF (from RFC 2616 section 3.7):
+ //
+ // header-value = media-type *( LWS "," LWS media-type )
+ // media-type = type "/" subtype *( LWS ";" LWS parameter )
+ // type = token
+ // subtype = token
+ // parameter = attribute "=" value
+ // attribute = token
+ // value = token | quoted-string
+ //
+ //
+ // Examples:
+ //
+ // text/html
+ // text/html, text/html
+ // text/html,text/html; charset=ISO-8859-1
+ // text/html,text/html; charset="ISO-8859-1"
+ // text/html;charset=ISO-8859-1, text/html
+ // text/html;charset='ISO-8859-1', text/html
+ // application/octet-stream
+ //
+
+ *aHadCharset = false;
+ const nsCString& flatStr = PromiseFlatCString(aHeaderStr);
+
+ // iterate over media-types. Note that ',' characters can happen
+ // inside quoted strings, so we need to watch out for that.
+ uint32_t curTypeStart = 0;
+ do {
+ // curTypeStart points to the start of the current media-type. We want
+ // to look for its end.
+ uint32_t curTypeEnd = net_FindMediaDelimiter(flatStr, curTypeStart, ',');
+
+ // At this point curTypeEnd points to the spot where the media-type
+ // starting at curTypeEnd ends. Time to parse that!
+ net_ParseMediaType(
+ Substring(flatStr, curTypeStart, curTypeEnd - curTypeStart),
+ aContentType, aContentCharset, curTypeStart, aHadCharset, aCharsetStart,
+ aCharsetEnd, false);
+
+ // And let's move on to the next media-type
+ curTypeStart = curTypeEnd + 1;
+ } while (curTypeStart < flatStr.Length());
+}
+
+void net_ParseRequestContentType(const nsACString& aHeaderStr,
+ nsACString& aContentType,
+ nsACString& aContentCharset,
+ bool* aHadCharset) {
+ //
+ // Augmented BNF (from RFC 7231 section 3.1.1.1):
+ //
+ // media-type = type "/" subtype *( OWS ";" OWS parameter )
+ // type = token
+ // subtype = token
+ // parameter = token "=" ( token / quoted-string )
+ //
+ // Examples:
+ //
+ // text/html
+ // text/html; charset=ISO-8859-1
+ // text/html; charset="ISO-8859-1"
+ // application/octet-stream
+ //
+
+ aContentType.Truncate();
+ aContentCharset.Truncate();
+ *aHadCharset = false;
+ const nsCString& flatStr = PromiseFlatCString(aHeaderStr);
+
+ // At this point curTypeEnd points to the spot where the media-type
+ // starting at curTypeEnd ends. Time to parse that!
+ nsAutoCString contentType, contentCharset;
+ bool hadCharset = false;
+ int32_t dummy1, dummy2;
+ uint32_t typeEnd = net_FindMediaDelimiter(flatStr, 0, ',');
+ if (typeEnd != flatStr.Length()) {
+ // We have some stuff left at the end, so this is not a valid
+ // request Content-Type header.
+ return;
+ }
+ net_ParseMediaType(flatStr, contentType, contentCharset, 0, &hadCharset,
+ &dummy1, &dummy2, true);
+
+ aContentType = contentType;
+ aContentCharset = contentCharset;
+ *aHadCharset = hadCharset;
+}
+
+bool net_IsValidHostName(const nsACString& host) {
+ // The host name is limited to 253 ascii characters.
+ if (host.Length() > 253) {
+ return false;
+ }
+
+ const char* end = host.EndReading();
+ // Use explicit whitelists to select which characters we are
+ // willing to send to lower-level DNS logic. This is more
+ // self-documenting, and can also be slightly faster than the
+ // blacklist approach, since DNS names are the common case, and
+ // the commonest characters will tend to be near the start of
+ // the list.
+
+ // Whitelist for DNS names (RFC 1035) with extra characters added
+ // for pragmatic reasons "$+_"
+ // see https://bugzilla.mozilla.org/show_bug.cgi?id=355181#c2
+ if (net_FindCharNotInSet(host.BeginReading(), end,
+ "abcdefghijklmnopqrstuvwxyz"
+ ".-0123456789"
+ "ABCDEFGHIJKLMNOPQRSTUVWXYZ$+_") == end) {
+ return true;
+ }
+
+ // Might be a valid IPv6 link-local address containing a percent sign
+ return mozilla::net::HostIsIPLiteral(host);
+}
+
+bool net_IsValidIPv4Addr(const nsACString& aAddr) {
+ return mozilla::net::rust_net_is_valid_ipv4_addr(&aAddr);
+}
+
+bool net_IsValidIPv6Addr(const nsACString& aAddr) {
+ return mozilla::net::rust_net_is_valid_ipv6_addr(&aAddr);
+}
+
+bool net_GetDefaultStatusTextForCode(uint16_t aCode, nsACString& aOutText) {
+ switch (aCode) {
+ // start with the most common
+ case 200:
+ aOutText.AssignLiteral("OK");
+ break;
+ case 404:
+ aOutText.AssignLiteral("Not Found");
+ break;
+ case 301:
+ aOutText.AssignLiteral("Moved Permanently");
+ break;
+ case 304:
+ aOutText.AssignLiteral("Not Modified");
+ break;
+ case 307:
+ aOutText.AssignLiteral("Temporary Redirect");
+ break;
+ case 500:
+ aOutText.AssignLiteral("Internal Server Error");
+ break;
+
+ // also well known
+ case 100:
+ aOutText.AssignLiteral("Continue");
+ break;
+ case 101:
+ aOutText.AssignLiteral("Switching Protocols");
+ break;
+ case 201:
+ aOutText.AssignLiteral("Created");
+ break;
+ case 202:
+ aOutText.AssignLiteral("Accepted");
+ break;
+ case 203:
+ aOutText.AssignLiteral("Non Authoritative");
+ break;
+ case 204:
+ aOutText.AssignLiteral("No Content");
+ break;
+ case 205:
+ aOutText.AssignLiteral("Reset Content");
+ break;
+ case 206:
+ aOutText.AssignLiteral("Partial Content");
+ break;
+ case 207:
+ aOutText.AssignLiteral("Multi-Status");
+ break;
+ case 208:
+ aOutText.AssignLiteral("Already Reported");
+ break;
+ case 300:
+ aOutText.AssignLiteral("Multiple Choices");
+ break;
+ case 302:
+ aOutText.AssignLiteral("Found");
+ break;
+ case 303:
+ aOutText.AssignLiteral("See Other");
+ break;
+ case 305:
+ aOutText.AssignLiteral("Use Proxy");
+ break;
+ case 308:
+ aOutText.AssignLiteral("Permanent Redirect");
+ break;
+ case 400:
+ aOutText.AssignLiteral("Bad Request");
+ break;
+ case 401:
+ aOutText.AssignLiteral("Unauthorized");
+ break;
+ case 402:
+ aOutText.AssignLiteral("Payment Required");
+ break;
+ case 403:
+ aOutText.AssignLiteral("Forbidden");
+ break;
+ case 405:
+ aOutText.AssignLiteral("Method Not Allowed");
+ break;
+ case 406:
+ aOutText.AssignLiteral("Not Acceptable");
+ break;
+ case 407:
+ aOutText.AssignLiteral("Proxy Authentication Required");
+ break;
+ case 408:
+ aOutText.AssignLiteral("Request Timeout");
+ break;
+ case 409:
+ aOutText.AssignLiteral("Conflict");
+ break;
+ case 410:
+ aOutText.AssignLiteral("Gone");
+ break;
+ case 411:
+ aOutText.AssignLiteral("Length Required");
+ break;
+ case 412:
+ aOutText.AssignLiteral("Precondition Failed");
+ break;
+ case 413:
+ aOutText.AssignLiteral("Request Entity Too Large");
+ break;
+ case 414:
+ aOutText.AssignLiteral("Request URI Too Long");
+ break;
+ case 415:
+ aOutText.AssignLiteral("Unsupported Media Type");
+ break;
+ case 416:
+ aOutText.AssignLiteral("Requested Range Not Satisfiable");
+ break;
+ case 417:
+ aOutText.AssignLiteral("Expectation Failed");
+ break;
+ case 418:
+ aOutText.AssignLiteral("I'm a teapot");
+ break;
+ case 421:
+ aOutText.AssignLiteral("Misdirected Request");
+ break;
+ case 422:
+ aOutText.AssignLiteral("Unprocessable Entity");
+ break;
+ case 423:
+ aOutText.AssignLiteral("Locked");
+ break;
+ case 424:
+ aOutText.AssignLiteral("Failed Dependency");
+ break;
+ case 425:
+ aOutText.AssignLiteral("Too Early");
+ break;
+ case 426:
+ aOutText.AssignLiteral("Upgrade Required");
+ break;
+ case 428:
+ aOutText.AssignLiteral("Precondition Required");
+ break;
+ case 429:
+ aOutText.AssignLiteral("Too Many Requests");
+ break;
+ case 431:
+ aOutText.AssignLiteral("Request Header Fields Too Large");
+ break;
+ case 451:
+ aOutText.AssignLiteral("Unavailable For Legal Reasons");
+ break;
+ case 501:
+ aOutText.AssignLiteral("Not Implemented");
+ break;
+ case 502:
+ aOutText.AssignLiteral("Bad Gateway");
+ break;
+ case 503:
+ aOutText.AssignLiteral("Service Unavailable");
+ break;
+ case 504:
+ aOutText.AssignLiteral("Gateway Timeout");
+ break;
+ case 505:
+ aOutText.AssignLiteral("HTTP Version Unsupported");
+ break;
+ case 506:
+ aOutText.AssignLiteral("Variant Also Negotiates");
+ break;
+ case 507:
+ aOutText.AssignLiteral("Insufficient Storage ");
+ break;
+ case 508:
+ aOutText.AssignLiteral("Loop Detected");
+ break;
+ case 510:
+ aOutText.AssignLiteral("Not Extended");
+ break;
+ case 511:
+ aOutText.AssignLiteral("Network Authentication Required");
+ break;
+ default:
+ aOutText.AssignLiteral("No Reason Phrase");
+ return false;
+ }
+ return true;
+}
+
+namespace mozilla {
+static auto MakeNameMatcher(const nsAString& aName) {
+ return [&aName](const auto& param) { return param.mKey.Equals(aName); };
+}
+
+bool URLParams::Has(const nsAString& aName) {
+ return std::any_of(mParams.cbegin(), mParams.cend(), MakeNameMatcher(aName));
+}
+
+bool URLParams::Has(const nsAString& aName, const nsAString& aValue) {
+ return std::any_of(
+ mParams.cbegin(), mParams.cend(), [&aName, &aValue](const auto& param) {
+ return param.mKey.Equals(aName) && param.mValue.Equals(aValue);
+ });
+}
+
+void URLParams::Get(const nsAString& aName, nsString& aRetval) {
+ SetDOMStringToNull(aRetval);
+
+ const auto end = mParams.cend();
+ const auto it = std::find_if(mParams.cbegin(), end, MakeNameMatcher(aName));
+ if (it != end) {
+ aRetval.Assign(it->mValue);
+ }
+}
+
+void URLParams::GetAll(const nsAString& aName, nsTArray<nsString>& aRetval) {
+ aRetval.Clear();
+
+ for (uint32_t i = 0, len = mParams.Length(); i < len; ++i) {
+ if (mParams[i].mKey.Equals(aName)) {
+ aRetval.AppendElement(mParams[i].mValue);
+ }
+ }
+}
+
+void URLParams::Append(const nsAString& aName, const nsAString& aValue) {
+ Param* param = mParams.AppendElement();
+ param->mKey = aName;
+ param->mValue = aValue;
+}
+
+void URLParams::Set(const nsAString& aName, const nsAString& aValue) {
+ Param* param = nullptr;
+ for (uint32_t i = 0, len = mParams.Length(); i < len;) {
+ if (!mParams[i].mKey.Equals(aName)) {
+ ++i;
+ continue;
+ }
+ if (!param) {
+ param = &mParams[i];
+ ++i;
+ continue;
+ }
+ // Remove duplicates.
+ mParams.RemoveElementAt(i);
+ --len;
+ }
+
+ if (!param) {
+ param = mParams.AppendElement();
+ param->mKey = aName;
+ }
+
+ param->mValue = aValue;
+}
+
+void URLParams::Delete(const nsAString& aName) {
+ mParams.RemoveElementsBy(
+ [&aName](const auto& param) { return param.mKey.Equals(aName); });
+}
+
+void URLParams::Delete(const nsAString& aName, const nsAString& aValue) {
+ mParams.RemoveElementsBy([&aName, &aValue](const auto& param) {
+ return param.mKey.Equals(aName) && param.mValue.Equals(aValue);
+ });
+}
+
+/* static */
+void URLParams::ConvertString(const nsACString& aInput, nsAString& aOutput) {
+ if (NS_FAILED(UTF_8_ENCODING->DecodeWithoutBOMHandling(aInput, aOutput))) {
+ MOZ_CRASH("Out of memory when converting URL params.");
+ }
+}
+
+/* static */
+void URLParams::DecodeString(const nsACString& aInput, nsAString& aOutput) {
+ const char* const end = aInput.EndReading();
+
+ nsAutoCString unescaped;
+
+ for (const char* iter = aInput.BeginReading(); iter != end;) {
+ // replace '+' with U+0020
+ if (*iter == '+') {
+ unescaped.Append(' ');
+ ++iter;
+ continue;
+ }
+
+ // Percent decode algorithm
+ if (*iter == '%') {
+ const char* const first = iter + 1;
+ const char* const second = first + 1;
+
+ const auto asciiHexDigit = [](char x) {
+ return (x >= 0x41 && x <= 0x46) || (x >= 0x61 && x <= 0x66) ||
+ (x >= 0x30 && x <= 0x39);
+ };
+
+ const auto hexDigit = [](char x) {
+ return x >= 0x30 && x <= 0x39
+ ? x - 0x30
+ : (x >= 0x41 && x <= 0x46 ? x - 0x37 : x - 0x57);
+ };
+
+ if (first != end && second != end && asciiHexDigit(*first) &&
+ asciiHexDigit(*second)) {
+ unescaped.Append(hexDigit(*first) * 16 + hexDigit(*second));
+ iter = second + 1;
+ } else {
+ unescaped.Append('%');
+ ++iter;
+ }
+
+ continue;
+ }
+
+ unescaped.Append(*iter);
+ ++iter;
+ }
+
+ // XXX It seems rather wasteful to first decode into a UTF-8 nsCString and
+ // then convert the whole string to UTF-16, at least if we exceed the inline
+ // storage size.
+ ConvertString(unescaped, aOutput);
+}
+
+/* static */
+bool URLParams::ParseNextInternal(const char*& aStart, const char* const aEnd,
+ nsAString* aOutDecodedName,
+ nsAString* aOutDecodedValue) {
+ nsDependentCSubstring string;
+
+ const char* const iter = std::find(aStart, aEnd, '&');
+ if (iter != aEnd) {
+ string.Rebind(aStart, iter);
+ aStart = iter + 1;
+ } else {
+ string.Rebind(aStart, aEnd);
+ aStart = aEnd;
+ }
+
+ if (string.IsEmpty()) {
+ return false;
+ }
+
+ const auto* const eqStart = string.BeginReading();
+ const auto* const eqEnd = string.EndReading();
+ const auto* const eqIter = std::find(eqStart, eqEnd, '=');
+
+ nsDependentCSubstring name;
+ nsDependentCSubstring value;
+
+ if (eqIter != eqEnd) {
+ name.Rebind(eqStart, eqIter);
+ value.Rebind(eqIter + 1, eqEnd);
+ } else {
+ name.Rebind(string, 0);
+ }
+
+ DecodeString(name, *aOutDecodedName);
+ DecodeString(value, *aOutDecodedValue);
+
+ return true;
+}
+
+/* static */
+bool URLParams::Extract(const nsACString& aInput, const nsAString& aName,
+ nsAString& aValue) {
+ aValue.SetIsVoid(true);
+ return !URLParams::Parse(
+ aInput, [&aName, &aValue](const nsAString& name, nsString&& value) {
+ if (aName == name) {
+ aValue = std::move(value);
+ return false;
+ }
+ return true;
+ });
+}
+
+void URLParams::ParseInput(const nsACString& aInput) {
+ // Remove all the existing data before parsing a new input.
+ DeleteAll();
+
+ URLParams::Parse(aInput, [this](nsString&& name, nsString&& value) {
+ mParams.AppendElement(Param{std::move(name), std::move(value)});
+ return true;
+ });
+}
+
+namespace {
+
+void SerializeString(const nsCString& aInput, nsAString& aValue) {
+ const unsigned char* p = (const unsigned char*)aInput.get();
+ const unsigned char* end = p + aInput.Length();
+
+ while (p != end) {
+ // ' ' to '+'
+ if (*p == 0x20) {
+ aValue.Append(0x2B);
+ // Percent Encode algorithm
+ } else if (*p == 0x2A || *p == 0x2D || *p == 0x2E ||
+ (*p >= 0x30 && *p <= 0x39) || (*p >= 0x41 && *p <= 0x5A) ||
+ *p == 0x5F || (*p >= 0x61 && *p <= 0x7A)) {
+ aValue.Append(*p);
+ } else {
+ aValue.AppendPrintf("%%%.2X", *p);
+ }
+
+ ++p;
+ }
+}
+
+} // namespace
+
+void URLParams::Serialize(nsAString& aValue, bool aEncode) const {
+ aValue.Truncate();
+ bool first = true;
+
+ for (uint32_t i = 0, len = mParams.Length(); i < len; ++i) {
+ if (first) {
+ first = false;
+ } else {
+ aValue.Append('&');
+ }
+
+ // XXX Actually, it's not necessary to build a new string object. Generally,
+ // such cases could just convert each codepoint one-by-one.
+ if (aEncode) {
+ SerializeString(NS_ConvertUTF16toUTF8(mParams[i].mKey), aValue);
+ aValue.Append('=');
+ SerializeString(NS_ConvertUTF16toUTF8(mParams[i].mValue), aValue);
+ } else {
+ aValue.Append(mParams[i].mKey);
+ aValue.Append('=');
+ aValue.Append(mParams[i].mValue);
+ }
+ }
+}
+
+void URLParams::Sort() {
+ mParams.StableSort([](const Param& lhs, const Param& rhs) {
+ return Compare(lhs.mKey, rhs.mKey);
+ });
+}
+
+} // namespace mozilla