Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 446 insertions, 0 deletions

diff --git a/netwerk/dns/DNS.cpp b/netwerk/dns/DNS.cpp
new file mode 100644
index 0000000000..bf20dd0e04
--- /dev/null
+++ b/netwerk/dns/DNS.cpp
@@ -0,0 +1,446 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim:set ts=4 sw=2 sts=2 et cin: */
+/* 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 "mozilla/net/DNS.h"
+
+#include "mozilla/ArrayUtils.h"
+#include "mozilla/Assertions.h"
+#include "mozilla/mozalloc.h"
+#include "mozilla/StaticPrefs_network.h"
+#include "nsContentUtils.h"
+#include "nsString.h"
+#include <string.h>
+
+#ifdef XP_WIN
+#  include "ws2tcpip.h"
+#endif
+
+namespace mozilla {
+namespace net {
+
+const char* inet_ntop_internal(int af, const void* src, char* dst,
+                               socklen_t size) {
+#ifdef XP_WIN
+  if (af == AF_INET) {
+    struct sockaddr_in s;
+    memset(&s, 0, sizeof(s));
+    s.sin_family = AF_INET;
+    memcpy(&s.sin_addr, src, sizeof(struct in_addr));
+    int result = getnameinfo((struct sockaddr*)&s, sizeof(struct sockaddr_in),
+                             dst, size, nullptr, 0, NI_NUMERICHOST);
+    if (result == 0) {
+      return dst;
+    }
+  } else if (af == AF_INET6) {
+    struct sockaddr_in6 s;
+    memset(&s, 0, sizeof(s));
+    s.sin6_family = AF_INET6;
+    memcpy(&s.sin6_addr, src, sizeof(struct in_addr6));
+    int result = getnameinfo((struct sockaddr*)&s, sizeof(struct sockaddr_in6),
+                             dst, size, nullptr, 0, NI_NUMERICHOST);
+    if (result == 0) {
+      return dst;
+    }
+  }
+  return nullptr;
+#else
+  return inet_ntop(af, src, dst, size);
+#endif
+}
+
+// Copies the contents of a PRNetAddr to a NetAddr.
+// Does not do a ptr safety check!
+void PRNetAddrToNetAddr(const PRNetAddr* prAddr, NetAddr* addr) {
+  if (prAddr->raw.family == PR_AF_INET) {
+    addr->inet.family = AF_INET;
+    addr->inet.port = prAddr->inet.port;
+    addr->inet.ip = prAddr->inet.ip;
+  } else if (prAddr->raw.family == PR_AF_INET6) {
+    addr->inet6.family = AF_INET6;
+    addr->inet6.port = prAddr->ipv6.port;
+    addr->inet6.flowinfo = prAddr->ipv6.flowinfo;
+    memcpy(&addr->inet6.ip, &prAddr->ipv6.ip, sizeof(addr->inet6.ip.u8));
+    addr->inet6.scope_id = prAddr->ipv6.scope_id;
+  }
+#if defined(XP_UNIX)
+  else if (prAddr->raw.family == PR_AF_LOCAL) {
+    addr->local.family = AF_LOCAL;
+    memcpy(addr->local.path, prAddr->local.path, sizeof(addr->local.path));
+  }
+#endif
+}
+
+extern "C" {
+// Rust bindings
+
+uint16_t moz_netaddr_get_family(const NetAddr* addr) {
+  return addr->raw.family;
+}
+
+uint32_t moz_netaddr_get_network_order_ip(const NetAddr* addr) {
+  return addr->inet.ip;
+}
+
+uint8_t const* moz_netaddr_get_ipv6(const NetAddr* addr) {
+  return addr->inet6.ip.u8;
+}
+
+uint16_t moz_netaddr_get_network_order_port(const NetAddr* addr) {
+  if (addr->raw.family == PR_AF_INET) {
+    return addr->inet.port;
+  }
+  if (addr->raw.family == PR_AF_INET6) {
+    return addr->inet6.port;
+  }
+  return 0;
+}
+
+}  // extern "C"
+
+// Copies the contents of a NetAddr to a PRNetAddr.
+// Does not do a ptr safety check!
+void NetAddrToPRNetAddr(const NetAddr* addr, PRNetAddr* prAddr) {
+  if (addr->raw.family == AF_INET) {
+    prAddr->inet.family = PR_AF_INET;
+    prAddr->inet.port = addr->inet.port;
+    prAddr->inet.ip = addr->inet.ip;
+  } else if (addr->raw.family == AF_INET6) {
+    prAddr->ipv6.family = PR_AF_INET6;
+    prAddr->ipv6.port = addr->inet6.port;
+    prAddr->ipv6.flowinfo = addr->inet6.flowinfo;
+    memcpy(&prAddr->ipv6.ip, &addr->inet6.ip, sizeof(addr->inet6.ip.u8));
+    prAddr->ipv6.scope_id = addr->inet6.scope_id;
+  }
+#if defined(XP_UNIX)
+  else if (addr->raw.family == AF_LOCAL) {
+    prAddr->local.family = PR_AF_LOCAL;
+    memcpy(prAddr->local.path, addr->local.path, sizeof(addr->local.path));
+  }
+#elif defined(XP_WIN)
+  else if (addr->raw.family == AF_LOCAL) {
+    prAddr->local.family = PR_AF_LOCAL;
+    memcpy(prAddr->local.path, addr->local.path, sizeof(addr->local.path));
+  }
+#endif
+}
+
+bool NetAddr::ToStringBuffer(char* buf, uint32_t bufSize) const {
+  const NetAddr* addr = this;
+  if (addr->raw.family == AF_INET) {
+    if (bufSize < INET_ADDRSTRLEN) {
+      return false;
+    }
+    struct in_addr nativeAddr = {};
+    nativeAddr.s_addr = addr->inet.ip;
+    return !!inet_ntop_internal(AF_INET, &nativeAddr, buf, bufSize);
+  }
+  if (addr->raw.family == AF_INET6) {
+    if (bufSize < INET6_ADDRSTRLEN) {
+      return false;
+    }
+    struct in6_addr nativeAddr = {};
+    memcpy(&nativeAddr.s6_addr, &addr->inet6.ip, sizeof(addr->inet6.ip.u8));
+    return !!inet_ntop_internal(AF_INET6, &nativeAddr, buf, bufSize);
+  }
+#if defined(XP_UNIX)
+  if (addr->raw.family == AF_LOCAL) {
+    if (bufSize < sizeof(addr->local.path)) {
+      // Many callers don't bother checking our return value, so
+      // null-terminate just in case.
+      if (bufSize > 0) {
+        buf[0] = '\0';
+      }
+      return false;
+    }
+
+    // Usually, the size passed to memcpy should be the size of the
+    // destination. Here, we know that the source is no larger than the
+    // destination, so using the source's size is always safe, whereas
+    // using the destination's size may cause us to read off the end of the
+    // source.
+    memcpy(buf, addr->local.path, sizeof(addr->local.path));
+    return true;
+  }
+#endif
+  return false;
+}
+
+nsCString NetAddr::ToString() const {
+  nsCString out;
+  out.SetLength(kNetAddrMaxCStrBufSize);
+  if (ToStringBuffer(out.BeginWriting(), kNetAddrMaxCStrBufSize)) {
+    out.SetLength(strlen(out.BeginWriting()));
+    return out;
+  }
+  return ""_ns;
+}
+
+bool NetAddr::IsLoopbackAddr() const {
+  if (IsLoopBackAddressWithoutIPv6Mapping()) {
+    return true;
+  }
+  const NetAddr* addr = this;
+  if (addr->raw.family != AF_INET6) {
+    return false;
+  }
+
+  return IPv6ADDR_IS_V4MAPPED(&addr->inet6.ip) &&
+         IPv6ADDR_V4MAPPED_TO_IPADDR(&addr->inet6.ip) == htonl(INADDR_LOOPBACK);
+}
+
+bool NetAddr::IsLoopBackAddressWithoutIPv6Mapping() const {
+  const NetAddr* addr = this;
+  if (addr->raw.family == AF_INET) {
+    // Consider 127.0.0.1/8 as loopback
+    uint32_t ipv4Addr = ntohl(addr->inet.ip);
+    return (ipv4Addr >> 24) == 127;
+  }
+
+  return addr->raw.family == AF_INET6 && IPv6ADDR_IS_LOOPBACK(&addr->inet6.ip);
+}
+
+bool IsLoopbackHostname(const nsACString& aAsciiHost) {
+  // If the user has configured to proxy localhost addresses don't consider them
+  // to be secure
+  if (StaticPrefs::network_proxy_allow_hijacking_localhost() &&
+      !StaticPrefs::network_proxy_testing_localhost_is_secure_when_hijacked()) {
+    return false;
+  }
+
+  nsAutoCString host;
+  nsContentUtils::ASCIIToLower(aAsciiHost, host);
+
+  return host.EqualsLiteral("localhost") || host.EqualsLiteral("localhost.") ||
+         StringEndsWith(host, ".localhost"_ns) ||
+         StringEndsWith(host, ".localhost."_ns);
+}
+
+bool HostIsIPLiteral(const nsACString& aAsciiHost) {
+  NetAddr addr;
+  return NS_SUCCEEDED(addr.InitFromString(aAsciiHost));
+}
+
+bool NetAddr::IsIPAddrAny() const {
+  if (this->raw.family == AF_INET) {
+    if (this->inet.ip == htonl(INADDR_ANY)) {
+      return true;
+    }
+  } else if (this->raw.family == AF_INET6) {
+    if (IPv6ADDR_IS_UNSPECIFIED(&this->inet6.ip)) {
+      return true;
+    }
+    if (IPv6ADDR_IS_V4MAPPED(&this->inet6.ip) &&
+        IPv6ADDR_V4MAPPED_TO_IPADDR(&this->inet6.ip) == htonl(INADDR_ANY)) {
+      return true;
+    }
+  }
+  return false;
+}
+
+NetAddr::NetAddr(const PRNetAddr* prAddr) { PRNetAddrToNetAddr(prAddr, this); }
+
+nsresult NetAddr::InitFromString(const nsACString& aString, uint16_t aPort) {
+  PRNetAddr prAddr{};
+  memset(&prAddr, 0, sizeof(PRNetAddr));
+  if (PR_StringToNetAddr(PromiseFlatCString(aString).get(), &prAddr) !=
+      PR_SUCCESS) {
+    return NS_ERROR_FAILURE;
+  }
+
+  PRNetAddrToNetAddr(&prAddr, this);
+
+  if (this->raw.family == PR_AF_INET) {
+    this->inet.port = PR_htons(aPort);
+  } else if (this->raw.family == PR_AF_INET6) {
+    this->inet6.port = PR_htons(aPort);
+  }
+  return NS_OK;
+}
+
+bool NetAddr::IsIPAddrV4() const { return this->raw.family == AF_INET; }
+
+bool NetAddr::IsIPAddrV4Mapped() const {
+  if (this->raw.family == AF_INET6) {
+    return IPv6ADDR_IS_V4MAPPED(&this->inet6.ip);
+  }
+  return false;
+}
+
+static bool isLocalIPv4(uint32_t networkEndianIP) {
+  uint32_t addr32 = ntohl(networkEndianIP);
+  return addr32 >> 24 == 0x0A ||    // 10/8 prefix (RFC 1918).
+         addr32 >> 20 == 0xAC1 ||   // 172.16/12 prefix (RFC 1918).
+         addr32 >> 16 == 0xC0A8 ||  // 192.168/16 prefix (RFC 1918).
+         addr32 >> 16 == 0xA9FE;    // 169.254/16 prefix (Link Local).
+}
+
+bool NetAddr::IsIPAddrLocal() const {
+  const NetAddr* addr = this;
+
+  // IPv4 RFC1918 and Link Local Addresses.
+  if (addr->raw.family == AF_INET) {
+    return isLocalIPv4(addr->inet.ip);
+  }
+  // IPv6 Unique and Link Local Addresses.
+  // or mapped IPv4 addresses
+  if (addr->raw.family == AF_INET6) {
+    uint16_t addr16 = ntohs(addr->inet6.ip.u16[0]);
+    if (addr16 >> 9 == 0xfc >> 1 ||    // fc00::/7 Unique Local Address.
+        addr16 >> 6 == 0xfe80 >> 6) {  // fe80::/10 Link Local Address.
+      return true;
+    }
+    if (IPv6ADDR_IS_V4MAPPED(&addr->inet6.ip)) {
+      return isLocalIPv4(IPv6ADDR_V4MAPPED_TO_IPADDR(&addr->inet6.ip));
+    }
+  }
+
+  // Not an IPv4/6 local address.
+  return false;
+}
+
+bool NetAddr::IsIPAddrShared() const {
+  const NetAddr* addr = this;
+
+  // IPv4 RFC6598.
+  if (addr->raw.family == AF_INET) {
+    uint32_t addr32 = ntohl(addr->inet.ip);
+    if (addr32 >> 22 == 0x644 >> 2) {  // 100.64/10 prefix (RFC 6598).
+      return true;
+    }
+  }
+
+  // Not an IPv4 shared address.
+  return false;
+}
+
+nsresult NetAddr::GetPort(uint16_t* aResult) const {
+  uint16_t port;
+  if (this->raw.family == PR_AF_INET) {
+    port = this->inet.port;
+  } else if (this->raw.family == PR_AF_INET6) {
+    port = this->inet6.port;
+  } else {
+    return NS_ERROR_NOT_INITIALIZED;
+  }
+
+  *aResult = ntohs(port);
+  return NS_OK;
+}
+
+bool NetAddr::operator==(const NetAddr& other) const {
+  if (this->raw.family != other.raw.family) {
+    return false;
+  }
+  if (this->raw.family == AF_INET) {
+    return (this->inet.port == other.inet.port) &&
+           (this->inet.ip == other.inet.ip);
+  }
+  if (this->raw.family == AF_INET6) {
+    return (this->inet6.port == other.inet6.port) &&
+           (this->inet6.flowinfo == other.inet6.flowinfo) &&
+           (memcmp(&this->inet6.ip, &other.inet6.ip, sizeof(this->inet6.ip)) ==
+            0) &&
+           (this->inet6.scope_id == other.inet6.scope_id);
+#if defined(XP_UNIX)
+  }
+  if (this->raw.family == AF_LOCAL) {
+    return strncmp(this->local.path, other.local.path,
+                   ArrayLength(this->local.path));
+#endif
+  }
+  return false;
+}
+
+bool NetAddr::operator<(const NetAddr& other) const {
+  if (this->raw.family != other.raw.family) {
+    return this->raw.family < other.raw.family;
+  }
+  if (this->raw.family == AF_INET) {
+    if (this->inet.ip == other.inet.ip) {
+      return this->inet.port < other.inet.port;
+    }
+    return this->inet.ip < other.inet.ip;
+  }
+  if (this->raw.family == AF_INET6) {
+    int cmpResult =
+        memcmp(&this->inet6.ip, &other.inet6.ip, sizeof(this->inet6.ip));
+    if (cmpResult) {
+      return cmpResult < 0;
+    }
+    if (this->inet6.port != other.inet6.port) {
+      return this->inet6.port < other.inet6.port;
+    }
+    return this->inet6.flowinfo < other.inet6.flowinfo;
+  }
+  return false;
+}
+
+AddrInfo::AddrInfo(const nsACString& host, const PRAddrInfo* prAddrInfo,
+                   bool disableIPv4, bool filterNameCollision,
+                   const nsACString& cname)
+    : mHostName(host), mCanonicalName(cname) {
+  MOZ_ASSERT(prAddrInfo,
+             "Cannot construct AddrInfo with a null prAddrInfo pointer!");
+  const uint32_t nameCollisionAddr = htonl(0x7f003535);  // 127.0.53.53
+
+  PRNetAddr tmpAddr;
+  void* iter = nullptr;
+  do {
+    iter = PR_EnumerateAddrInfo(iter, prAddrInfo, 0, &tmpAddr);
+    bool addIt = iter && (!disableIPv4 || tmpAddr.raw.family != PR_AF_INET) &&
+                 (!filterNameCollision || tmpAddr.raw.family != PR_AF_INET ||
+                  (tmpAddr.inet.ip != nameCollisionAddr));
+    if (addIt) {
+      NetAddr elem(&tmpAddr);
+      mAddresses.AppendElement(elem);
+    }
+  } while (iter);
+}
+
+AddrInfo::AddrInfo(const nsACString& host, const nsACString& cname,
+                   DNSResolverType aResolverType, unsigned int aTRRType,
+                   nsTArray<NetAddr>&& addresses)
+    : mHostName(host),
+      mCanonicalName(cname),
+      mResolverType(aResolverType),
+      mTRRType(aTRRType),
+      mAddresses(std::move(addresses)) {}
+
+AddrInfo::AddrInfo(const nsACString& host, DNSResolverType aResolverType,
+                   unsigned int aTRRType, nsTArray<NetAddr>&& addresses,
+                   uint32_t aTTL)
+    : ttl(aTTL),
+      mHostName(host),
+      mCanonicalName(),
+      mResolverType(aResolverType),
+      mTRRType(aTRRType),
+      mAddresses(std::move(addresses)) {}
+
+// deep copy constructor
+AddrInfo::AddrInfo(const AddrInfo* src) {
+  mHostName = src->mHostName;
+  mCanonicalName = src->mCanonicalName;
+  ttl = src->ttl;
+  mResolverType = src->mResolverType;
+  mTRRType = src->mTRRType;
+  mTrrFetchDuration = src->mTrrFetchDuration;
+  mTrrFetchDurationNetworkOnly = src->mTrrFetchDurationNetworkOnly;
+
+  mAddresses = src->mAddresses.Clone();
+}
+
+AddrInfo::~AddrInfo() = default;
+
+size_t AddrInfo::SizeOfIncludingThis(MallocSizeOf mallocSizeOf) const {
+  size_t n = mallocSizeOf(this);
+  n += mHostName.SizeOfExcludingThisIfUnshared(mallocSizeOf);
+  n += mCanonicalName.SizeOfExcludingThisIfUnshared(mallocSizeOf);
+  n += mAddresses.ShallowSizeOfExcludingThis(mallocSizeOf);
+  return n;
+}
+
+}  // namespace net
+}  // namespace mozilla