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      1 /*
      2  * libjingle
      3  * Copyright 2004--2005, 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 #ifndef TALK_BASE_HTTPCOMMON_INL_H__
     29 #define TALK_BASE_HTTPCOMMON_INL_H__
     30 
     31 #include "talk/base/common.h"
     32 #include "talk/base/httpcommon.h"
     33 
     34 namespace talk_base {
     35 
     36 ///////////////////////////////////////////////////////////////////////////////
     37 // Url
     38 ///////////////////////////////////////////////////////////////////////////////
     39 
     40 template<class CTYPE>
     41 void Url<CTYPE>::do_set_url(const CTYPE* val, size_t len) {
     42   if (ascnicmp(val, "http://", 7) == 0) {
     43     val += 7; len -= 7;
     44     secure_ = false;
     45   } else if (ascnicmp(val, "https://", 8) == 0) {
     46     val += 8; len -= 8;
     47     secure_ = true;
     48   } else {
     49     clear();
     50     return;
     51   }
     52   const CTYPE* path = strchrn(val, len, static_cast<CTYPE>('/'));
     53   if (!path) {
     54     path = val + len;
     55   }
     56   size_t address_length = (path - val);
     57   do_set_address(val, address_length);
     58   do_set_full_path(path, len - address_length);
     59 }
     60 
     61 template<class CTYPE>
     62 void Url<CTYPE>::do_set_address(const CTYPE* val, size_t len) {
     63   if (const CTYPE* colon = strchrn(val, len, static_cast<CTYPE>(':'))) {
     64     host_.assign(val, colon - val);
     65     // Note: In every case, we're guaranteed that colon is followed by a null,
     66     // or non-numeric character.
     67     port_ = static_cast<uint16>(::strtoul(colon + 1, NULL, 10));
     68     // TODO: Consider checking for invalid data following port number.
     69   } else {
     70     host_.assign(val, len);
     71     port_ = HttpDefaultPort(secure_);
     72   }
     73 }
     74 
     75 template<class CTYPE>
     76 void Url<CTYPE>::do_set_full_path(const CTYPE* val, size_t len) {
     77   const CTYPE* query = strchrn(val, len, static_cast<CTYPE>('?'));
     78   if (!query) {
     79     query = val + len;
     80   }
     81   size_t path_length = (query - val);
     82   if (0 == path_length) {
     83     // TODO: consider failing in this case.
     84     path_.assign(1, static_cast<CTYPE>('/'));
     85   } else {
     86     ASSERT(val[0] == static_cast<CTYPE>('/'));
     87     path_.assign(val, path_length);
     88   }
     89   query_.assign(query, len - path_length);
     90 }
     91 
     92 template<class CTYPE>
     93 void Url<CTYPE>::do_get_url(string* val) const {
     94   CTYPE protocol[9];
     95   asccpyn(protocol, ARRAY_SIZE(protocol), secure_ ? "https://" : "http://");
     96   val->append(protocol);
     97   do_get_address(val);
     98   do_get_full_path(val);
     99 }
    100 
    101 template<class CTYPE>
    102 void Url<CTYPE>::do_get_address(string* val) const {
    103   val->append(host_);
    104   if (port_ != HttpDefaultPort(secure_)) {
    105     CTYPE format[5], port[32];
    106     asccpyn(format, ARRAY_SIZE(format), ":%hu");
    107     sprintfn(port, ARRAY_SIZE(port), format, port_);
    108     val->append(port);
    109   }
    110 }
    111 
    112 template<class CTYPE>
    113 void Url<CTYPE>::do_get_full_path(string* val) const {
    114   val->append(path_);
    115   val->append(query_);
    116 }
    117 
    118 template<class CTYPE>
    119 bool Url<CTYPE>::get_attribute(const string& name, string* value) const {
    120   if (query_.empty())
    121     return false;
    122 
    123   std::string::size_type pos = query_.find(name, 1);
    124   if (std::string::npos == pos)
    125     return false;
    126 
    127   pos += name.length() + 1;
    128   if ((pos > query_.length()) || (static_cast<CTYPE>('=') != query_[pos-1]))
    129     return false;
    130 
    131   std::string::size_type end = query_.find(static_cast<CTYPE>('&'), pos);
    132   if (std::string::npos == end) {
    133     end = query_.length();
    134   }
    135   value->assign(query_.substr(pos, end - pos));
    136   return true;
    137 }
    138 
    139 ///////////////////////////////////////////////////////////////////////////////
    140 
    141 }  // namespace talk_base
    142 
    143 #endif  // TALK_BASE_HTTPCOMMON_INL_H__
    144