Electroneum
updates.cpp
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29 
30 #include <boost/algorithm/string.hpp>
31 #include "misc_log_ex.h"
32 #include "util.h"
33 #include "dns_utils.h"
34 #include "updates.h"
35 
36 #undef ELECTRONEUM_DEFAULT_LOG_CATEGORY
37 #define ELECTRONEUM_DEFAULT_LOG_CATEGORY "updates"
38 
39 namespace tools
40 {
41  bool check_updates(const std::string &software, const std::string &buildtag, std::string &version, std::string &hash)
42  {
43  std::vector<std::string> records;
44  bool found = false;
45 
46  MDEBUG("Checking updates for " << buildtag << " " << software);
47 
48  // All four ElectroneumPulse domains have DNSSEC on and valid
49  static const std::vector<std::string> dns_urls = {
50  "updates.electroneumpulse.com",
51  "updates.electroneumpulse.info",
52  "updates.electroneumpulse.net",
53  "updates.electroneumpulse.org"
54  };
55 
56  if (!tools::dns_utils::load_txt_records_from_dns(records, dns_urls, "update"))
57  return false;
58 
59  for (const auto& record : records)
60  {
61  std::vector<std::string> fields;
62  boost::split(fields, record, boost::is_any_of(":"));
63  if (fields.size() != 4)
64  {
65  MWARNING("Updates record does not have 4 fields: " << record);
66  continue;
67  }
68 
69  if (software != fields[0] || buildtag != fields[1])
70  continue;
71 
72  bool alnum = true;
73  for (auto c: fields[3])
74  if (!isalnum(c))
75  alnum = false;
76  if (fields[3].size() != 64 && !alnum)
77  {
78  MWARNING("Invalid hash: " << fields[3]);
79  continue;
80  }
81 
82  // use highest version
83  if (found)
84  {
85  int cmp = vercmp(version.c_str(), fields[2].c_str());
86  if (cmp > 0)
87  continue;
88  if (cmp == 0 && hash != fields[3])
89  MWARNING("Two matches found for " << software << " version " << version << " on " << buildtag);
90  }
91 
92  version = fields[2];
93  hash = fields[3];
94 
95  MINFO("Found new version " << version << " with hash " << hash);
96  found = true;
97  }
98  return found;
99  }
100 
101  std::string get_update_url(const std::string &software, const std::string &subdir, const std::string &buildtag, const std::string &version, bool user)
102  {
103  const char *base = user ? "http://s3-eu-west-1.amazonaws.com/updates.electroneum.com/releases/download/v" : "http://s3-eu-west-1.amazonaws.com/updates.electroneum.com/releases/download/v";
104 #ifdef _WIN32
105  static const char *extension = strncmp(buildtag.c_str(), "install-", 8) ? ".zip" : ".exe";
106 #else
107  static const char extension[] = ".tar.bz2";
108 #endif
109 
110  std::string url;
111 
112  url = base;
113 // if (!subdir.empty())
114 // url += subdir + "/";
115  url = url + version + "/" + software + "-" + buildtag + "-v" + version + extension;
116  return url;
117  }
118 }
#define MINFO(x)
Definition: misc_log_ex.h:75
::std::string string
Definition: gtest-port.h:1097
std::string get_update_url(const std::string &software, const std::string &subdir, const std::string &buildtag, const std::string &version, bool user)
Definition: updates.cpp:101
#define MDEBUG(x)
Definition: misc_log_ex.h:76
bool check_updates(const std::string &software, const std::string &buildtag, std::string &version, std::string &hash)
Definition: updates.cpp:41
Various Tools.
Definition: tools.cpp:31
version
Supported socks variants.
Definition: socks.h:57
#define MWARNING(x)
Definition: misc_log_ex.h:74
POD_CLASS hash
Definition: hash.h:50
bool load_txt_records_from_dns(std::vector< std::string > &good_records, const std::vector< std::string > &dns_urls, std::string type)
Definition: dns_utils.cpp:515
int vercmp(const char *v0, const char *v1)
Definition: util.cpp:915