mirror of
https://github.com/classilla/tenfourfox.git
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257 lines
5.5 KiB
C
257 lines
5.5 KiB
C
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef MacQuirks_h__
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#define MacQuirks_h__
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#include <sys/types.h>
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#include <sys/sysctl.h>
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#include "CoreFoundation/CoreFoundation.h"
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#include "CoreServices/CoreServices.h"
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#include "Carbon/Carbon.h"
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// This file is a copy and paste from existing methods from
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// libxul. This is intentional because this interpose
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// library does not link with libxul.
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struct VersionPart {
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int32_t numA;
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const char *strB; // NOT null-terminated, can be a null pointer
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uint32_t strBlen;
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int32_t numC;
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char *extraD; // null-terminated
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};
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/**
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* Parse a version part into a number and "extra text".
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*
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* @returns A pointer to the next versionpart, or null if none.
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*/
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static char*
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ParseVP(char *part, VersionPart &result)
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{
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char *dot;
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result.numA = 0;
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result.strB = nullptr;
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result.strBlen = 0;
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result.numC = 0;
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result.extraD = nullptr;
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if (!part)
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return part;
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dot = strchr(part, '.');
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if (dot)
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*dot = '\0';
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if (part[0] == '*' && part[1] == '\0') {
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result.numA = INT32_MAX;
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result.strB = "";
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}
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else {
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result.numA = strtol(part, const_cast<char**>(&result.strB), 10);
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}
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if (!*result.strB) {
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result.strB = nullptr;
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result.strBlen = 0;
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}
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else {
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if (result.strB[0] == '+') {
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static const char kPre[] = "pre";
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++result.numA;
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result.strB = kPre;
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result.strBlen = sizeof(kPre) - 1;
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}
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else {
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const char *numstart = strpbrk(result.strB, "0123456789+-");
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if (!numstart) {
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result.strBlen = strlen(result.strB);
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}
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else {
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result.strBlen = numstart - result.strB;
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result.numC = strtol(numstart, &result.extraD, 10);
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if (!*result.extraD)
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result.extraD = nullptr;
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}
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}
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}
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if (dot) {
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++dot;
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if (!*dot)
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dot = nullptr;
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}
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return dot;
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}
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// compare two null-terminated strings, which may be null pointers
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static int32_t
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ns_strcmp(const char *str1, const char *str2)
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{
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// any string is *before* no string
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if (!str1)
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return str2 != 0;
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if (!str2)
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return -1;
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return strcmp(str1, str2);
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}
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// compare two length-specified string, which may be null pointers
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static int32_t
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ns_strnncmp(const char *str1, uint32_t len1, const char *str2, uint32_t len2)
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{
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// any string is *before* no string
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if (!str1)
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return str2 != 0;
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if (!str2)
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return -1;
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for (; len1 && len2; --len1, --len2, ++str1, ++str2) {
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if (*str1 < *str2)
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return -1;
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if (*str1 > *str2)
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return 1;
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}
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if (len1 == 0)
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return len2 == 0 ? 0 : -1;
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return 1;
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}
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// compare two int32_t
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static int32_t
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ns_cmp(int32_t n1, int32_t n2)
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{
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if (n1 < n2)
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return -1;
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return n1 != n2;
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}
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/**
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* Compares two VersionParts
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*/
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static int32_t
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CompareVP(VersionPart &v1, VersionPart &v2)
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{
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int32_t r = ns_cmp(v1.numA, v2.numA);
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if (r)
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return r;
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r = ns_strnncmp(v1.strB, v1.strBlen, v2.strB, v2.strBlen);
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if (r)
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return r;
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r = ns_cmp(v1.numC, v2.numC);
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if (r)
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return r;
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return ns_strcmp(v1.extraD, v2.extraD);
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}
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/* this is intentionally not static so that we don't end up making copies
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* anywhere */
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int32_t
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NS_CompareVersions(const char *A, const char *B)
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{
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char *A2 = strdup(A);
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if (!A2)
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return 1;
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char *B2 = strdup(B);
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if (!B2) {
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free(A2);
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return 1;
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}
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int32_t result;
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char *a = A2, *b = B2;
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do {
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VersionPart va, vb;
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a = ParseVP(a, va);
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b = ParseVP(b, vb);
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result = CompareVP(va, vb);
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if (result)
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break;
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} while (a || b);
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free(A2);
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free(B2);
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return result;
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}
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static void
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TriggerQuirks()
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{
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int mib[2];
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mib[0] = CTL_KERN;
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mib[1] = KERN_OSRELEASE;
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// we won't support versions greater than 10.7.99
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char release[sizeof("10.7.99")];
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size_t len = sizeof(release);
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// sysctl will return ENOMEM if the release string is longer than sizeof(release)
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int ret = sysctl(mib, 2, release, &len, nullptr, 0);
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// we only want to trigger this on OS X 10.6, on versions 10.6.8 or newer
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// Darwin version 10 corresponds to OS X version 10.6, version 11 is 10.7
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// http://en.wikipedia.org/wiki/Darwin_(operating_system)#Release_history
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if (ret == 0 && NS_CompareVersions(release, "10.8.0") >= 0 && NS_CompareVersions(release, "11") < 0) {
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CFBundleRef mainBundle = CFBundleGetMainBundle();
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if (mainBundle) {
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CFRetain(mainBundle);
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CFStringRef bundleID = CFBundleGetIdentifier(mainBundle);
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if (bundleID) {
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CFRetain(bundleID);
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CFMutableDictionaryRef dict = (CFMutableDictionaryRef)CFBundleGetInfoDictionary(mainBundle);
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CFDictionarySetValue(dict, CFSTR("CFBundleIdentifier"), CFSTR("org.mozilla.firefox"));
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// Trigger a load of the quirks table for org.mozilla.firefox.
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// We use different function on 32/64bit because of how the APIs
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// behave to force a call to GetBugsForOurBundleIDFromCoreservicesd.
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#ifdef __i386__
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ProcessSerialNumber psn;
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::GetCurrentProcess(&psn);
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#else
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SInt32 major;
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::Gestalt(gestaltSystemVersionMajor, &major);
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#endif
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// restore the original id
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dict = (CFMutableDictionaryRef)CFBundleGetInfoDictionary(mainBundle);
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CFDictionarySetValue(dict, CFSTR("CFBundleIdentifier"), bundleID);
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CFRelease(bundleID);
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}
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CFRelease(mainBundle);
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}
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}
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}
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#endif //MacQuirks_h__
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