Security/libsecurity_utilities/lib/inetreply.cpp

   1 /*
   2  * Copyright (c) 2000-2004,2011-2012,2014 Apple Inc. All Rights Reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. Please obtain a copy of the License at
  10  * http://www.opensource.apple.com/apsl/ and read it before using this
  11  * file.
  12  *
  13  * The Original Code and all software distributed under the License are
  14  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  16  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  18  * Please see the License for the specific language governing rights and
  19  * limitations under the License.
  20  *
  21  * @APPLE_LICENSE_HEADER_END@
  22  */
  23
  24
  25 //
  26 // inetreply - manage Internet-standard reply strings
  27 //
  28 #include "inetreply.h"
  29 #include <security_utilities/debugging.h>
  30 #include <ctype.h>
  31
  32 namespace Security {
  33 namespace IPPlusPlus {
  34
  35
  36 //
  37 // Construct an InetReply object from a WRITABLE buffer.
  38 // The buffer will be alterered by this constructor, and needs to be left alone
  39 // until the InetReply object is destroyed.
  40 //
  41 InetReply::InetReply(const char *buffer) : mBuffer(buffer)
  42 {
  43     analyze();
  44 }
  45
  46 void InetReply::analyze()
  47 {
  48     // follow Internet rule #1: be lenient in what you accept
  49     /*const*/ char *p;                          // (un-const is ANSI bogosity in strtol)
  50     mCode = (int) strtol(mBuffer, &p, 10);
  51     if (p == mBuffer) {                 // conversion failed
  52         mCode = -1;                             // error indicator
  53         mSeparator = ' ';
  54         mMessage = "?invalid?";
  55         return;
  56     }
  57     if (!*p) {                                  // just "nnn" (tolerate)
  58         mCode = atoi(p);
  59         mSeparator = ' ';
  60         mMessage = "";
  61         return;
  62     }
  63     mSeparator = *p++;
  64     while (isspace(*p)) p++;
  65     mMessage = p;
  66 }
  67
  68
  69 //
  70 // Continuation handling
  71 //
  72 bool InetReply::Continuation::operator () (const char *input)
  73 {
  74     if (mActive && !strncmp(input, mTestString, 4))
  75         mActive = false;
  76     return mActive;
  77 }
  78
  79 bool InetReply::Continuation::operator () (const InetReply &reply)
  80 {
  81     if (!mActive && reply.isContinued()) {
  82         mActive = true;
  83         snprintf(mTestString, 4, "%03d", reply.code());
  84         mTestString[3] = ' ';   // no \0 left in this string
  85     }
  86     return mActive;
  87 }
  88
  89
  90 }       // end namespace IPPlusPlus
  91 }       // end namespace Security