From a0fe18f63a38948ab2ed89db416a4a01bb6043d7 Mon Sep 17 00:00:00 2001 From: warptangent Date: Tue, 19 May 2015 01:51:15 -0700 Subject: [PATCH 1/2] Revert "Allow name@domain.tld for OpenAlias lookups" This reverts commit b18368b635ba08aea541ef52ebc74180822644a2. --- src/common/dns_utils.cpp | 34 +++++++++++++--------------------- src/common/dns_utils.h | 5 +---- 2 files changed, 14 insertions(+), 25 deletions(-) diff --git a/src/common/dns_utils.cpp b/src/common/dns_utils.cpp index 347cf758a..ea7f1078b 100644 --- a/src/common/dns_utils.cpp +++ b/src/common/dns_utils.cpp @@ -205,15 +205,13 @@ std::vector DNSResolver::get_ipv4(const std::string& url, bool& dns dnssec_valid = false; char urlC[1000]; // waaaay too big, but just in case... - std::string url_copy{url}; - if (!check_address_syntax(url_copy)) + strncpy(urlC, url.c_str(), 999); + urlC[999] = '\0'; + if (!check_address_syntax(urlC)) { return addresses; } - strncpy(urlC, url_copy.c_str(), 999); - urlC[999] = '\0'; - // destructor takes care of cleanup ub_result_ptr result; @@ -241,15 +239,14 @@ std::vector DNSResolver::get_ipv6(const std::string& url, bool& dns dnssec_valid = false; char urlC[1000]; // waaaay too big, but just in case... - std::string url_copy{url}; - if (!check_address_syntax(url_copy)) + strncpy(urlC, url.c_str(), 999); + urlC[999] = '\0'; + + if (!check_address_syntax(urlC)) { return addresses; } - strncpy(urlC, url_copy.c_str(), 999); - urlC[999] = '\0'; - ub_result_ptr result; // call DNS resolver, blocking. if return value not zero, something went wrong @@ -276,15 +273,14 @@ std::vector DNSResolver::get_txt_record(const std::string& url, boo dnssec_valid = false; char urlC[1000]; // waaaay too big, but just in case... - std::string url_copy{url}; - if (!check_address_syntax(url_copy)) + strncpy(urlC, url.c_str(), 999); + urlC[999] = '\0'; + + if (!check_address_syntax(urlC)) { return records; } - strncpy(urlC, url_copy.c_str(), 999); - urlC[999] = '\0'; - ub_result_ptr result; // call DNS resolver, blocking. if return value not zero, something went wrong @@ -318,17 +314,13 @@ DNSResolver& DNSResolver::instance() return *staticInstance; } -bool DNSResolver::check_address_syntax(std::string& addr) +bool DNSResolver::check_address_syntax(const std::string& addr) { // if string doesn't contain a dot, we won't consider it a url for now. - auto first_dot = addr.find("."); - if (first_dot == std::string::npos) + if (addr.find(".") == std::string::npos) { return false; } - - // allow name@domain.tld to work - addr.replace(first_dot, 1, "@"); return true; } diff --git a/src/common/dns_utils.h b/src/common/dns_utils.h index 4e48acb09..a16c7eff7 100644 --- a/src/common/dns_utils.h +++ b/src/common/dns_utils.h @@ -112,14 +112,11 @@ private: /** * @brief Checks a string to see if it looks like a URL * - * If the address looks good, but contains one @ symbol, replace that with a . - * e.g. donate@getmonero.org becomes donate.getmonero.org - * * @param addr the string to be checked * * @return true if it looks enough like a URL, false if not */ - bool check_address_syntax(std::string& addr); + bool check_address_syntax(const std::string& addr); DNSResolverData *m_data; }; // class DNSResolver From fee8424938a6403bdd12d568037a3305cfcf5341 Mon Sep 17 00:00:00 2001 From: warptangent Date: Tue, 19 May 2015 02:33:30 -0700 Subject: [PATCH 2/2] Allow name@domain.tld for OpenAlias lookups Based on tewinget's update. Make OpenAlias address format independent of existing DNS functions. Add tests. Test: make debug-test cd build/debug/tests/unit_tests # test that regular DNS functions work, including IPv4 lookups. # also test function that converts OpenAlias address format make && ./unit_tests --gtest_filter=DNSResolver* # test that OpenAlias addresses like donate@getmonero.org work from # wallet tools make && ./unit_tests --gtest_filter=AddressFromURL.Success --- src/common/dns_utils.cpp | 13 +++++++++++++ src/common/dns_utils.h | 12 ++++++++++++ src/wallet/wallet2.cpp | 3 ++- tests/unit_tests/address_from_url.cpp | 8 ++++++++ tests/unit_tests/dns_resolver.cpp | 8 ++++++++ 5 files changed, 43 insertions(+), 1 deletion(-) diff --git a/src/common/dns_utils.cpp b/src/common/dns_utils.cpp index ea7f1078b..98e3d0ea6 100644 --- a/src/common/dns_utils.cpp +++ b/src/common/dns_utils.cpp @@ -304,6 +304,19 @@ std::vector DNSResolver::get_txt_record(const std::string& url, boo return records; } +std::string DNSResolver::get_dns_format_from_oa_address(const std::string& oa_addr) +{ + std::string addr(oa_addr); + auto first_at = addr.find("@"); + if (first_at == std::string::npos) + return addr; + + // convert name@domain.tld to name.domain.tld + addr.replace(first_at, 1, "."); + + return addr; +} + DNSResolver& DNSResolver::instance() { static DNSResolver* staticInstance = NULL; diff --git a/src/common/dns_utils.h b/src/common/dns_utils.h index a16c7eff7..d98523a30 100644 --- a/src/common/dns_utils.h +++ b/src/common/dns_utils.h @@ -100,6 +100,18 @@ public: // TODO: modify this to accomodate DNSSEC std::vector get_txt_record(const std::string& url, bool& dnssec_available, bool& dnssec_valid); + /** + * @brief Gets a DNS address from OpenAlias format + * + * If the address looks good, but contains one @ symbol, replace that with a . + * e.g. donate@getmonero.org becomes donate.getmonero.org + * + * @param oa_addr OpenAlias address + * + * @return dns_addr DNS address + */ + std::string get_dns_format_from_oa_address(const std::string& oa_addr); + /** * @brief Gets the singleton instance of DNSResolver * diff --git a/src/wallet/wallet2.cpp b/src/wallet/wallet2.cpp index 6698e7296..7928e1c62 100644 --- a/src/wallet/wallet2.cpp +++ b/src/wallet/wallet2.cpp @@ -1016,7 +1016,8 @@ std::vector wallet2::addresses_from_url(const std::string& url, boo std::vector addresses; // get txt records bool dnssec_available, dnssec_isvalid; - auto records = tools::DNSResolver::instance().get_txt_record(url, dnssec_available, dnssec_isvalid); + std::string oa_addr = tools::DNSResolver::instance().get_dns_format_from_oa_address(url); + auto records = tools::DNSResolver::instance().get_txt_record(oa_addr, dnssec_available, dnssec_isvalid); // TODO: update this to allow for conveying that dnssec was not available if (dnssec_available && dnssec_isvalid) diff --git a/tests/unit_tests/address_from_url.cpp b/tests/unit_tests/address_from_url.cpp index fe2f072de..99df75d74 100644 --- a/tests/unit_tests/address_from_url.cpp +++ b/tests/unit_tests/address_from_url.cpp @@ -93,6 +93,14 @@ TEST(AddressFromURL, Success) { EXPECT_STREQ(addr.c_str(), addresses[0].c_str()); } + + // OpenAlias address with an @ instead of first . + addresses = tools::wallet2::addresses_from_url("donate@getmonero.org", dnssec_result); + EXPECT_EQ(1, addresses.size()); + if (addresses.size() == 1) + { + EXPECT_STREQ(addr.c_str(), addresses[0].c_str()); + } } TEST(AddressFromURL, Failure) diff --git a/tests/unit_tests/dns_resolver.cpp b/tests/unit_tests/dns_resolver.cpp index 6717e990a..0709a773f 100644 --- a/tests/unit_tests/dns_resolver.cpp +++ b/tests/unit_tests/dns_resolver.cpp @@ -148,4 +148,12 @@ TEST(DNSResolver, GetTXTRecord) { std::cout << "TXT record for donate.getmonero.org: " << rec << std::endl; } + + // replace first @ with . + std::string addr = tools::DNSResolver::instance().get_dns_format_from_oa_address("donate@getmonero.org"); + EXPECT_STREQ("donate.getmonero.org", addr.c_str()); + + // no change + addr = tools::DNSResolver::instance().get_dns_format_from_oa_address("donate.getmonero.org"); + EXPECT_STREQ("donate.getmonero.org", addr.c_str()); }