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dns_utils: remove archaic string_copy workaround

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This commit is contained in:
jpk68
2026-07-05 20:23:42 -04:00
parent 49c9cfc315
commit 248a343897
1 changed files with 8 additions and 19 deletions
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src/common/dns_utils.cpp
+8 -19
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@@ -182,24 +182,13 @@ struct DNSResolverData
ub_ctx* m_ub_context;
};
// work around for bug https://www.nlnetlabs.nl/bugs-script/show_bug.cgi?id=515 needed for it to compile on e.g. Debian 7
class string_copy {
public:
string_copy(const char *s): str(strdup(s)) {}
~string_copy() { free(str); }
operator char*() { return str; }
public:
char *str;
};
static void add_anchors(ub_ctx *ctx)
{
const char * const *ds = ::get_builtin_ds();
while (*ds)
{
MINFO("adding trust anchor: " << *ds);
ub_ctx_add_ta(ctx, string_copy(*ds++));
ub_ctx_add_ta(ctx, *ds++);
}
}
@@ -228,9 +217,9 @@ DNSResolver::DNSResolver() : m_data(new DNSResolverData())
if (use_dns_public)
{
for (const auto &ip: dns_public_addr)
ub_ctx_set_fwd(m_data->m_ub_context, string_copy(ip.c_str()));
ub_ctx_set_option(m_data->m_ub_context, string_copy("do-udp:"), string_copy("no"));
ub_ctx_set_option(m_data->m_ub_context, string_copy("do-tcp:"), string_copy("yes"));
ub_ctx_set_fwd(m_data->m_ub_context, ip.c_str());
ub_ctx_set_option(m_data->m_ub_context, "do-udp:", "no");
ub_ctx_set_option(m_data->m_ub_context, "do-tcp:", "yes");
}
else {
// look for "/etc/resolv.conf" and "/etc/hosts" or platform equivalent
@@ -255,9 +244,9 @@ DNSResolver::DNSResolver() : m_data(new DNSResolverData())
m_data->m_ub_context = ub_ctx_create();
add_anchors(m_data->m_ub_context);
for (const auto &ip: DEFAULT_DNS_PUBLIC_ADDR)
ub_ctx_set_fwd(m_data->m_ub_context, string_copy(ip));
ub_ctx_set_option(m_data->m_ub_context, string_copy("do-udp:"), string_copy("no"));
ub_ctx_set_option(m_data->m_ub_context, string_copy("do-tcp:"), string_copy("yes"));
ub_ctx_set_fwd(m_data->m_ub_context, ip);
ub_ctx_set_option(m_data->m_ub_context, "do-udp:", "no");
ub_ctx_set_option(m_data->m_ub_context, "do-tcp:", "yes");
}
}
}
@@ -290,7 +279,7 @@ std::vector<std::string> DNSResolver::get_record(const std::string& url, int rec
MDEBUG("Performing DNSSEC " << get_record_name(record_type) << " record query for " << url);
// call DNS resolver, blocking. if return value not zero, something went wrong
if (!ub_resolve(m_data->m_ub_context, string_copy(url.c_str()), record_type, DNS_CLASS_IN, &result))
if (!ub_resolve(m_data->m_ub_context, url.c_str(), record_type, DNS_CLASS_IN, &result))
{
dnssec_available = (result->secure || result->bogus);
dnssec_valid = result->secure && !result->bogus;