Move plugin/srpc contents to the more appropriately named plugin/common....

src/trusted/plugin/srpc/nexe_arch.cc

-/*
- * Copyright 2010 The Native Client Authors. All rights reserved.
- * Use of this source code is governed by a BSD-style license that can
- * be found in the LICENSE file.
- */
-
-#include "native_client/src/trusted/plugin/srpc/nexe_arch.h"
-
-#include <stdio.h>
-
-#include "native_client/src/include/portability.h"
-#include "native_client/src/trusted/platform_qualify/nacl_os_qualify.h"
-#include "native_client/src/trusted/plugin/srpc/utility.h"
-
-namespace plugin {
-
-// Returns the kind of SFI sandbox implemented by sel_ldr on this
-// platform: ARM, x86-32, x86-64.
-//
-// This is a function of the current CPU, OS, browser, installed
-// sel_ldr(s).  It is not sufficient to derive the result only from
-// build-time parameters since, for example, an x86-32 plugin is
-// capable of launching a 64-bit NaCl sandbox if a 64-bit sel_ldr is
-// installed (and indeed, may only be capable of launching a 64-bit
-// sandbox).
-//
-// TODO(adonovan): this function changes over time as we deploy
-// different things.  It should be defined once, authoritatively,
-// instead of guessed at where it's needed, e.g. here.
-static nacl::string GetSandbox();
-
-#if NACL_ARCH_CPU_X86_FAMILY
-
-static nacl::string GetSandbox() {
-#if !defined(NACL_STANDALONE) && NACL_ARCH_CPU_X86_64 && NACL_LINUX
-  return "x86-64";  // 64-bit Chrome on Linux
-#else
-  return NaClOsIs64BitWindows() == 1
-      ? "x86-64"   // 64-bit Windows (Chrome, Firefox)
-      : "x86-32";  // everything else.
-#endif
-}
-
-#elif NACL_ARCH_CPU_ARM_FAMILY
-
-static nacl::string GetSandbox() { return "ARM"; }
-
-#else /* hopefully unreachable */
-
-#error GetSandbox() missing on this platform
-
-#endif
-
-// Removes leading and trailing ASCII whitespace from |*s|.
-static nacl::string TrimWhitespace(const nacl::string& s) {
-  size_t start = s.find_first_not_of(" \t");
-  size_t end = s.find_last_not_of(" \t");
-  return start == nacl::string::npos
-      ? ""
-      : s.substr(start, end + 1 - start);
-}
-
-// Parse one line of the nexes attribute.
-// Returns true iff it's a match, and writes URL to |*url|.
-static bool ParseOneNexeLine(const nacl::string& nexe_line,
-                             const nacl::string& sandbox,
-                             nacl::string* url) {
-  size_t semi = nexe_line.find(':');
-  if (semi == nacl::string::npos) {
-    PLUGIN_PRINTF(("missing colon in line of 'nexes' attribute"));
-    return false;
-  }
-  nacl::string attr_sandbox = TrimWhitespace(nexe_line.substr(0, semi));
-  nacl::string attr_url = TrimWhitespace(nexe_line.substr(semi + 1));
-  bool match = sandbox == attr_sandbox;
-  PLUGIN_PRINTF(("ParseOneNexeLine %s %s: match=%d\n",
-                 attr_sandbox.c_str(),
-                 attr_url.c_str(),
-                 match));
-  if (match) *url = attr_url;
-  return match;
-}
-
-// Parses an <embed nexes='...'> attribute and returns the URL of the
-// nexe matching |sandbox|.  Returns true and assigns |*result| to the
-// URL on success; otherwise returns false.
-//
-// nexes       ::= <nexe-line> ( '\n' <nexes> )*
-// nexe-line   ::= <sandbox> ':' <nexe-url>
-//
-// Spaces surrounding <sandbox> and <nexe-url> are ignored, but
-// <nexe-url> may contain internal spaces.
-static bool FindNexeForSandbox(const nacl::string& nexes_attr,
-                               const nacl::string& sandbox,
-                               nacl::string* url) {
-  size_t pos, oldpos;
-  for (oldpos = 0, pos = nexes_attr.find('\n', oldpos);
-       pos != nacl::string::npos;
-       oldpos = pos +  1, pos = nexes_attr.find('\n', oldpos)) {
-    if (ParseOneNexeLine(nexes_attr.substr(oldpos, pos - oldpos), sandbox,
-                         url)) {
-      return true;
-    }
-  }
-  if (oldpos < nexes_attr.size() - 1) {  /* attr doesn't end in newline */
-    if (ParseOneNexeLine(nexes_attr.substr(oldpos), sandbox, url)) return true;
-  }
-  return false;
-}
-
-// See nexe_arch.h.
-// An entry point for testing.
-bool GetNexeURL(const char* nexes_attr, nacl::string* result) {
-  const nacl::string sandbox = GetSandbox();
-  PLUGIN_PRINTF(("GetNexeURL(): sandbox='%s' nexes='%s'.\n",
-                 sandbox.c_str(), nexes_attr));
-  if (FindNexeForSandbox(nexes_attr, sandbox, result)) return true;
-  *result = "No Native Client executable was provided for the " + sandbox
-      + " sandbox.";
-  return false;
-}
-
-}  // namespace plugin