1 files changed, 90 insertions, 0 deletions
diff --git a/dns/powerdns-recursor/files/patch-hostnamemax b/dns/powerdns-recursor/files/patch-hostnamemax
new file mode 100644
index 000000000000..38beefb1026d
--- /dev/null
+++ b/dns/powerdns-recursor/files/patch-hostnamemax
@@ -0,0 +1,90 @@
+diff --git misc.cc misc.cc
+index f9248af42a..5cb4dbe812 100644
+--- misc.cc
++++ misc.cc
+@@ -57,6 +57,7 @@
+ #include <sys/types.h>
+ #include <pwd.h>
+ #include <grp.h>
++#include <limits.h>
+ #ifdef __FreeBSD__
+ #  include <pthread_np.h>
+ #endif
+@@ -1563,3 +1564,39 @@ bool setPipeBufferSize(int fd, size_t size)
+   return false;
+ #endif /* F_SETPIPE_SZ */
+ }
++
++static size_t getMaxHostNameSize()
++{
++#if defined(HOST_NAME_MAX)
++  return HOST_NAME_MAX;
++#endif
++
++#if defined(_SC_HOST_NAME_MAX)
++  auto tmp = sysconf(_SC_HOST_NAME_MAX);
++  if (tmp != -1) {
++    return tmp;
++  }
++#endif
++
++  /* _POSIX_HOST_NAME_MAX */
++  return 255;
++}
++
++std::string getCarbonHostName()
++{
++  std::string hostname;
++  hostname.resize(getMaxHostNameSize() + 1, 0);
++
++  if (gethostname(const_cast<char*>(hostname.c_str()), hostname.size()) != 0) {
++    throw std::runtime_error(stringerror());
++  }
++
++  auto pos = hostname.find(".");
++  if (pos != std::string::npos) {
++    hostname.resize(pos);
++  }
++
++  boost::replace_all(hostname, ".", "_");
++
++  return hostname;
++}
+diff --git misc.hh misc.hh
+index 4bd9439a87..795e8ec855 100644
+--- misc.hh
++++ misc.hh
+@@ -607,3 +607,5 @@ bool isSettingThreadCPUAffinitySupported();
+ int mapThreadToCPUList(pthread_t tid, const std::set<int>& cpus);
+ 
+ std::vector<ComboAddress> getResolvers(const std::string& resolvConfPath);
++
++std::string getCarbonHostName();
+diff --git rec-carbon.cc rec-carbon.cc
+index 4e0cedb00f..458a25d5ca 100644
+--- rec-carbon.cc
++++ rec-carbon.cc
+@@ -32,17 +32,13 @@ try
+   if(namespace_name.empty()) {
+     namespace_name="pdns";
+   }
+-  if(hostname.empty()) {
+-    char tmp[HOST_NAME_MAX+1];
+-    memset(tmp, 0, sizeof(tmp));
+-    if (gethostname(tmp, sizeof(tmp)) != 0) {
+-      throw std::runtime_error("The 'carbon-ourname' setting has not been set and we are unable to determine the system's hostname: " + stringerror());
++  if (hostname.empty()) {
++    try {
++      hostname = getCarbonHostName();
++    }
++    catch(const std::exception& e) {
++      throw std::runtime_error(std::string("The 'carbon-ourname' setting has not been set and we are unable to determine the system's hostname: ") + e.what());
+     }
+-    char *p = strchr(tmp, '.');
+-    if(p) *p=0;
+-
+-    hostname=tmp;
+-    boost::replace_all(hostname, ".", "_");    
+   }
+   if(instance_name.empty()) {
+     instance_name="recursor";