1 //===-- UriParser.cpp -------------------------------------------*- C++ -*-===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 
10 #include "Utility/UriParser.h"
11 
12 // C Includes
13 
14 // C++ Includes
15 #include <cstring>
16 
17 // Other libraries and framework includes
18 // Project includes
19 #include "lldb/Host/StringConvert.h"
20 
21 using namespace lldb_private;
22 
23 //----------------------------------------------------------------------
24 // UriParser::Parse
25 //----------------------------------------------------------------------
26 bool
27 UriParser::Parse(const std::string& uri,
28                  std::string& scheme,
29                  std::string& hostname,
30                  int& port,
31                  std::string& path)
32 {
33     std::string tmp_scheme, tmp_hostname, tmp_port, tmp_path;
34 
35     static const char* kSchemeSep = "://";
36     auto pos = uri.find(kSchemeSep);
37     if (pos == std::string::npos)
38         return false;
39 
40     // Extract path.
41     tmp_scheme = uri.substr(0, pos);
42     auto host_pos = pos + strlen(kSchemeSep);
43     auto path_pos = uri.find('/', host_pos);
44     if (path_pos != std::string::npos)
45         tmp_path = uri.substr(path_pos);
46     else
47         tmp_path = "/";
48 
49     auto host_port = uri.substr(
50         host_pos, ((path_pos != std::string::npos) ? path_pos  : uri.size()) - host_pos);
51 
52     // Extract hostname
53     if (host_port[0] == '[')
54     {
55         // hostname is enclosed with square brackets.
56         pos = host_port.find(']');
57         if (pos == std::string::npos)
58             return false;
59 
60         tmp_hostname = host_port.substr(1, pos - 1);
61         host_port.erase(0, pos + 1);
62     }
63     else
64     {
65         pos = host_port.find(':');
66         tmp_hostname = host_port.substr(0, (pos != std::string::npos) ? pos : host_port.size());
67         host_port.erase(0, (pos != std::string::npos) ? pos : host_port.size());
68     }
69 
70     // Extract port
71     tmp_port = host_port;
72     if (!tmp_port.empty())
73     {
74         if (tmp_port[0] != ':')
75             return false;
76         tmp_port = tmp_port.substr(1);
77         bool success = false;
78         auto port_tmp = StringConvert::ToUInt32(tmp_port.c_str(), UINT32_MAX, 10, &success);
79         if (!success || port_tmp > 65535)
80         {
81             // there are invalid characters in port_buf
82             return false;
83         }
84         port = port_tmp;
85     }
86     else
87         port = -1;
88 
89     scheme = tmp_scheme;
90     hostname = tmp_hostname;
91     path = tmp_path;
92     return true;
93 }
94 
95