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