mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
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261 lines
8.5 KiB
C++
261 lines
8.5 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* vim:set ts=4 sw=4 sts=4 ci et: */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Mozilla.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications.
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* Portions created by the Initial Developer are Copyright (C) 2001
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Darin Fisher <darin@netscape.com> (original author)
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "nsHttpHeaderArray.h"
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#include "nsHttp.h"
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//-----------------------------------------------------------------------------
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// nsHttpHeaderArray <public>
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//-----------------------------------------------------------------------------
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nsresult
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nsHttpHeaderArray::SetHeader(nsHttpAtom header,
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const nsACString &value,
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PRBool merge)
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{
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nsEntry *entry = nsnull;
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PRInt32 index;
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index = LookupEntry(header, &entry);
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// If an empty value is passed in, then delete the header entry...
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// unless we are merging, in which case this function becomes a NOP.
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if (value.IsEmpty()) {
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if (!merge && entry)
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mHeaders.RemoveElementAt(index);
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return NS_OK;
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}
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// Create a new entry, or...
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if (!entry) {
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entry = mHeaders.AppendElement(); //new nsEntry(header, value);
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if (!entry)
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return NS_ERROR_OUT_OF_MEMORY;
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entry->header = header;
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entry->value = value;
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}
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// Append the new value to the existing value iff...
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else if (merge && CanAppendToHeader(header)) {
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if (header == nsHttp::Set_Cookie ||
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header == nsHttp::WWW_Authenticate ||
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header == nsHttp::Proxy_Authenticate)
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// Special case these headers and use a newline delimiter to
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// delimit the values from one another as commas may appear
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// in the values of these headers contrary to what the spec says.
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entry->value.Append('\n');
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else
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// Delimit each value from the others using a comma (per HTTP spec)
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entry->value.AppendLiteral(", ");
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entry->value.Append(value);
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}
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// Replace the existing string with the new value
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else if (CanOverwriteHeader(header))
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entry->value = value;
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else if (!entry->value.Equals(value))
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return NS_ERROR_CORRUPTED_CONTENT;
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return NS_OK;
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}
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void
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nsHttpHeaderArray::ClearHeader(nsHttpAtom header)
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{
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mHeaders.RemoveElement(header, nsEntry::MatchHeader());
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}
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const char *
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nsHttpHeaderArray::PeekHeader(nsHttpAtom header)
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{
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nsEntry *entry = nsnull;
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LookupEntry(header, &entry);
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return entry ? entry->value.get() : nsnull;
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}
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nsresult
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nsHttpHeaderArray::GetHeader(nsHttpAtom header, nsACString &result)
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{
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nsEntry *entry = nsnull;
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LookupEntry(header, &entry);
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if (!entry)
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return NS_ERROR_NOT_AVAILABLE;
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result = entry->value;
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return NS_OK;
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}
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nsresult
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nsHttpHeaderArray::VisitHeaders(nsIHttpHeaderVisitor *visitor)
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{
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NS_ENSURE_ARG_POINTER(visitor);
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PRUint32 i, count = mHeaders.Length();
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for (i = 0; i < count; ++i) {
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const nsEntry &entry = mHeaders[i];
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if (NS_FAILED(visitor->VisitHeader(nsDependentCString(entry.header),
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entry.value)))
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break;
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}
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return NS_OK;
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}
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nsresult
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nsHttpHeaderArray::ParseHeaderLine(const char *line,
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nsHttpAtom *hdr,
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char **val)
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{
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//
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// BNF from section 4.2 of RFC 2616:
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//
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// message-header = field-name ":" [ field-value ]
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// field-name = token
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// field-value = *( field-content | LWS )
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// field-content = <the OCTETs making up the field-value
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// and consisting of either *TEXT or combinations
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// of token, separators, and quoted-string>
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//
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// We skip over mal-formed headers in the hope that we'll still be able to
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// do something useful with the response.
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char *p = (char *) strchr(line, ':');
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if (!p) {
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LOG(("malformed header [%s]: no colon\n", line));
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return NS_OK;
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}
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// make sure we have a valid token for the field-name
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if (!nsHttp::IsValidToken(line, p)) {
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LOG(("malformed header [%s]: field-name not a token\n", line));
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return NS_OK;
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}
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*p = 0; // null terminate field-name
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nsHttpAtom atom = nsHttp::ResolveAtom(line);
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if (!atom) {
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LOG(("failed to resolve atom [%s]\n", line));
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return NS_OK;
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}
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// skip over whitespace
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p = net_FindCharNotInSet(++p, HTTP_LWS);
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// trim trailing whitespace - bug 86608
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char *p2 = net_RFindCharNotInSet(p, HTTP_LWS);
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*++p2 = 0; // null terminate header value; if all chars starting at |p|
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// consisted of LWS, then p2 would have pointed at |p-1|, so
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// the prefix increment is always valid.
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// assign return values
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if (hdr) *hdr = atom;
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if (val) *val = p;
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// assign response header
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return SetHeader(atom, nsDependentCString(p, p2 - p), PR_TRUE);
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}
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void
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nsHttpHeaderArray::Flatten(nsACString &buf, PRBool pruneProxyHeaders)
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{
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PRUint32 i, count = mHeaders.Length();
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for (i = 0; i < count; ++i) {
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const nsEntry &entry = mHeaders[i];
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// prune proxy headers if requested
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if (pruneProxyHeaders && ((entry.header == nsHttp::Proxy_Authorization) ||
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(entry.header == nsHttp::Proxy_Connection)))
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continue;
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buf.Append(entry.header);
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buf.AppendLiteral(": ");
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buf.Append(entry.value);
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buf.AppendLiteral("\r\n");
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}
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}
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const char *
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nsHttpHeaderArray::PeekHeaderAt(PRUint32 index, nsHttpAtom &header)
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{
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const nsEntry &entry = mHeaders[index];
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header = entry.header;
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return entry.value.get();
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}
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void
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nsHttpHeaderArray::Clear()
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{
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mHeaders.Clear();
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}
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//-----------------------------------------------------------------------------
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// nsHttpHeaderArray <private>
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//-----------------------------------------------------------------------------
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PRInt32
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nsHttpHeaderArray::LookupEntry(nsHttpAtom header, nsEntry **entry)
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{
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PRUint32 index = mHeaders.IndexOf(header, 0, nsEntry::MatchHeader());
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if (index != PR_UINT32_MAX)
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*entry = &mHeaders[index];
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return index;
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}
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PRBool
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nsHttpHeaderArray::CanAppendToHeader(nsHttpAtom header)
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{
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return header != nsHttp::Content_Type &&
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header != nsHttp::Content_Length &&
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header != nsHttp::User_Agent &&
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header != nsHttp::Referer &&
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header != nsHttp::Host &&
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header != nsHttp::Authorization &&
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header != nsHttp::Proxy_Authorization &&
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header != nsHttp::If_Modified_Since &&
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header != nsHttp::If_Unmodified_Since &&
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header != nsHttp::From &&
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header != nsHttp::Location &&
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header != nsHttp::Max_Forwards;
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}
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PRBool
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nsHttpHeaderArray::CanOverwriteHeader(nsHttpAtom header)
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{
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if (mType != HTTP_RESPONSE_HEADERS)
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return PR_TRUE;
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return header != nsHttp::Content_Length;
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}
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