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      1 /*
      2  * libjingle
      3  * Copyright 2007--2009, Google Inc.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions are met:
      7  *
      8  *  1. Redistributions of source code must retain the above copyright notice,
      9  *     this list of conditions and the following disclaimer.
     10  *  2. Redistributions in binary form must reproduce the above copyright notice,
     11  *     this list of conditions and the following disclaimer in the documentation
     12  *     and/or other materials provided with the distribution.
     13  *  3. The name of the author may not be used to endorse or promote products
     14  *     derived from this software without specific prior written permission.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
     17  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
     18  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
     19  * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     20  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     21  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
     22  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
     23  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
     24  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
     25  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     26  */
     27 
     28 #include <sstream>
     29 
     30 #include "talk/base/common.h"
     31 #include "talk/base/logging.h"
     32 #include "talk/base/macutils.h"
     33 #include "talk/base/scoped_ptr.h"
     34 #include "talk/base/stringutils.h"
     35 
     36 namespace talk_base {
     37 
     38 ///////////////////////////////////////////////////////////////////////////////
     39 
     40 bool ToUtf8(const CFStringRef str16, std::string* str8) {
     41   if ((NULL == str16) || (NULL == str8))
     42     return false;
     43   size_t maxlen = CFStringGetMaximumSizeForEncoding(CFStringGetLength(str16),
     44                                                     kCFStringEncodingUTF8)
     45                   + 1;
     46   scoped_array<char> buffer(new char[maxlen]);
     47   if (!buffer.get()
     48       || !CFStringGetCString(str16, buffer.get(), maxlen,
     49                              kCFStringEncodingUTF8))
     50     return false;
     51   str8->assign(buffer.get());
     52   return true;
     53 }
     54 
     55 bool ToUtf16(const std::string& str8, CFStringRef* str16) {
     56   if (NULL == str16)
     57     return false;
     58   *str16 = CFStringCreateWithBytes(kCFAllocatorDefault,
     59                                    reinterpret_cast<const UInt8*>(str8.data()),
     60                                    str8.length(), kCFStringEncodingUTF8,
     61                                    false);
     62   return (NULL != *str16);
     63 }
     64 
     65 void DecodeFourChar(UInt32 fc, std::string* out) {
     66   std::stringstream ss;
     67   ss << '\'';
     68   bool printable = true;
     69   for (int i = 3; i >= 0; --i) {
     70     char ch = (fc >> (8 * i)) & 0xFF;
     71     if (isprint(static_cast<unsigned char>(ch))) {
     72       ss << ch;
     73     } else {
     74       printable = false;
     75       break;
     76     }
     77   }
     78   if (printable) {
     79     ss << '\'';
     80   } else {
     81     ss.str("");
     82     ss << "0x" << std::hex << fc;
     83   }
     84   out->append(ss.str());
     85 }
     86 
     87 std::string DecodeEvent(EventRef event) {
     88   std::string str;
     89   DecodeFourChar(::GetEventClass(event), &str);
     90   str.push_back(':');
     91   DecodeFourChar(::GetEventKind(event), &str);
     92   return str;
     93 }
     94 
     95 static bool GetGestalt(OSType ostype, int* value) {
     96   ASSERT(NULL != value);
     97   SInt32 native_value;
     98   OSStatus result = Gestalt(ostype, &native_value);
     99   if (noErr == result) {
    100     *value = native_value;
    101     return true;
    102   }
    103   std::string str;
    104   DecodeFourChar(ostype, &str);
    105   LOG_E(LS_ERROR, OS, result) << "Gestalt(" << str << ")";
    106   return false;
    107 }
    108 
    109 bool GetOSVersion(int* major, int* minor, int* bugfix) {
    110   ASSERT(major && minor && bugfix);
    111   if (!GetGestalt(gestaltSystemVersion, major))
    112     return false;
    113   if (*major < 0x1040) {
    114     *bugfix = *major & 0xF;
    115     *minor = (*major >> 4) & 0xF;
    116     *major = (*major >> 8);
    117     return true;
    118   }
    119   return GetGestalt(gestaltSystemVersionMajor, major)
    120       && GetGestalt(gestaltSystemVersionMinor, minor)
    121       && GetGestalt(gestaltSystemVersionBugFix, bugfix);
    122 }
    123 
    124 MacOSVersionName GetOSVersionName() {
    125   int major = 0, minor = 0, bugfix = 0;
    126   if (!GetOSVersion(&major, &minor, &bugfix))
    127     return kMacOSUnknown;
    128   if (major > 10)
    129     return kMacOSNewer;
    130   if ((major < 10) || (minor < 3))
    131     return kMacOSOlder;
    132   switch (minor) {
    133     case 3:
    134       return kMacOSPanther;
    135     case 4:
    136       return kMacOSTiger;
    137     case 5:
    138       return kMacOSLeopard;
    139   }
    140   return kMacOSNewer;
    141 }
    142 
    143 bool GetQuickTimeVersion(std::string* out) {
    144   int ver;
    145   if (!GetGestalt(gestaltQuickTimeVersion, &ver))
    146     return false;
    147 
    148   std::stringstream ss;
    149   ss << std::hex << ver;
    150   *out = ss.str();
    151   return true;
    152 }
    153 
    154 bool RunAppleScript(const std::string& script) {
    155   ComponentInstance component = NULL;
    156   AEDesc script_desc;
    157   AEDesc result_data;
    158   OSStatus err;
    159   OSAID script_id, result_id;
    160 
    161   AECreateDesc(typeNull, NULL, 0, &script_desc);
    162   AECreateDesc(typeNull, NULL, 0, &result_data);
    163   script_id = kOSANullScript;
    164   result_id = kOSANullScript;
    165 
    166   component = OpenDefaultComponent(kOSAComponentType, typeAppleScript);
    167   if (component == NULL) {
    168     LOG(LS_ERROR) << "Failed opening Apple Script component";
    169     return false;
    170   }
    171   err = AECreateDesc(typeUTF8Text, script.data(), script.size(), &script_desc);
    172   if (err != noErr) {
    173     CloseComponent(component);
    174     LOG(LS_ERROR) << "Failed creating Apple Script description";
    175     return false;
    176   }
    177 
    178   err = OSACompile(component, &script_desc, kOSAModeCanInteract, &script_id);
    179   if (err != noErr) {
    180     AEDisposeDesc(&script_desc);
    181     if (script_id != kOSANullScript) {
    182       OSADispose(component, script_id);
    183     }
    184     CloseComponent(component);
    185     LOG(LS_ERROR) << "Error compiling Apple Script";
    186     return false;
    187   }
    188 
    189   err = OSAExecute(component, script_id, kOSANullScript, kOSAModeCanInteract,
    190 		   &result_id);
    191 
    192   if (err == errOSAScriptError) {
    193     LOG(LS_ERROR) << "Error when executing Apple Script: " << script;
    194     AECreateDesc(typeNull, NULL, 0, &result_data);
    195     OSAScriptError(component, kOSAErrorMessage, typeChar, &result_data);
    196     int len = AEGetDescDataSize(&result_data);
    197     char* data = (char*) malloc(len);
    198     if (data != NULL) {
    199       err = AEGetDescData(&result_data, data, len);
    200       LOG(LS_ERROR) << "Script error: " << data;
    201     }
    202     AEDisposeDesc(&script_desc);
    203     AEDisposeDesc(&result_data);
    204     return false;
    205   }
    206   AEDisposeDesc(&script_desc);
    207   if (script_id != kOSANullScript) {
    208     OSADispose(component, script_id);
    209   }
    210   if (result_id != kOSANullScript) {
    211     OSADispose(component, result_id);
    212   }
    213   CloseComponent(component);
    214   return true;
    215 }
    216 
    217 
    218 ///////////////////////////////////////////////////////////////////////////////
    219 
    220 }  // namespace talk_base
    221