//----------------------------------------------------------------------------- // nsHttpHeaderArray <public> //----------------------------------------------------------------------------- nsresult nsHttpHeaderArray::SetHeader(nsHttpAtom header, const nsACString &value, bool merge) { nsEntry *entry = nullptr; int32_t index; index = LookupEntry(header, &entry); // If an empty value is passed in, then delete the header entry... // unless we are merging, in which case this function becomes a NOP. if (value.IsEmpty()) { if (!merge && entry) mHeaders.RemoveElementAt(index); return NS_OK; } if (!entry) { entry = mHeaders.AppendElement(); // new nsEntry() if (!entry) return NS_ERROR_OUT_OF_MEMORY; entry->header = header; entry->value = value; } else if (merge && !IsSingletonHeader(header)) { MergeHeader(header, entry, value); } else { // Replace the existing string with the new value entry->value = value; } return NS_OK; }
nsresult nsHttpHeaderArray::SetHeaderFromNet(nsHttpAtom header, const nsACString &value) { nsEntry *entry = nsnull; PRInt32 index; index = LookupEntry(header, &entry); if (!entry) { if (value.IsEmpty()) return NS_OK; // ignore empty headers entry = mHeaders.AppendElement(); //new nsEntry(header, value); if (!entry) return NS_ERROR_OUT_OF_MEMORY; entry->header = header; entry->value = value; } else if (!IsSingletonHeader(header)) { MergeHeader(header, entry, value); } else { // Multiple instances of non-mergeable header received from network // - ignore if same value if (!entry->value.Equals(value)) { if (IsSuspectDuplicateHeader(header)) { // reply may be corrupt/hacked (ex: CLRF injection attacks) return NS_ERROR_CORRUPTED_CONTENT; } // else silently drop value: keep value from 1st header seen } } return NS_OK; }
//----------------------------------------------------------------------------- // nsHttpHeaderArray <public> //----------------------------------------------------------------------------- nsresult nsHttpHeaderArray::SetHeader(nsHttpAtom header, const nsACString &value, bool merge, nsHttpHeaderArray::HeaderVariety variety) { MOZ_ASSERT((variety == eVarietyResponse) || (variety == eVarietyRequestDefault) || (variety == eVarietyRequestOverride), "Net original headers can only be set using SetHeader_internal()."); nsEntry *entry = nullptr; int32_t index; index = LookupEntry(header, &entry); // If an empty value is passed in, then delete the header entry... // unless we are merging, in which case this function becomes a NOP. if (value.IsEmpty()) { if (!merge && entry) { if (entry->variety == eVarietyResponseNetOriginalAndResponse) { MOZ_ASSERT(variety == eVarietyResponse); entry->variety = eVarietyResponseNetOriginal; } else { mHeaders.RemoveElementAt(index); } } return NS_OK; } MOZ_ASSERT(!entry || variety != eVarietyRequestDefault, "Cannot set default entry which overrides existing entry!"); if (!entry) { return SetHeader_internal(header, value, variety); } else if (merge && !IsSingletonHeader(header)) { return MergeHeader(header, entry, value, variety); } else { // Replace the existing string with the new value if (entry->variety == eVarietyResponseNetOriginalAndResponse) { MOZ_ASSERT(variety == eVarietyResponse); entry->variety = eVarietyResponseNetOriginal; return SetHeader_internal(header, value, variety); } else { entry->value = value; entry->variety = variety; } } return NS_OK; }
nsresult nsHttpHeaderArray::SetHeaderFromNet(nsHttpAtom header, const nsACString &value, bool response) { // mHeader holds the consolidated (merged or updated) headers. // mHeader for response header will keep the original heades as well. nsEntry *entry = nullptr; LookupEntry(header, &entry); if (!entry) { if (value.IsEmpty()) { if (!gHttpHandler->KeepEmptyResponseHeadersAsEmtpyString() && !TrackEmptyHeader(header)) { LOG(("Ignoring Empty Header: %s\n", header.get())); if (response) { // Set header as original but not as response header. return SetHeader_internal(header, value, eVarietyResponseNetOriginal); } return NS_OK; // ignore empty headers by default } } HeaderVariety variety = eVarietyRequestOverride; if (response) { variety = eVarietyResponseNetOriginalAndResponse; } return SetHeader_internal(header, value, variety); } else if (!IsSingletonHeader(header)) { HeaderVariety variety = eVarietyRequestOverride; if (response) { variety = eVarietyResponse; } nsresult rv = MergeHeader(header, entry, value, variety); if (NS_FAILED(rv)) { return rv; } if (response) { rv = SetHeader_internal(header, value, eVarietyResponseNetOriginal); } return rv; } else { // Multiple instances of non-mergeable header received from network // - ignore if same value if (!entry->value.Equals(value)) { if (IsSuspectDuplicateHeader(header)) { // reply may be corrupt/hacked (ex: CLRF injection attacks) return NS_ERROR_CORRUPTED_CONTENT; } // else silently drop value: keep value from 1st header seen LOG(("Header %s silently dropped as non mergeable header\n", header.get())); } if (response) { return SetHeader_internal(header, value, eVarietyResponseNetOriginal); } } return NS_OK; }