main/gdnsd: cherry pick some improvements from bug tracker

 * faster startup time with cities geodb
 * more flexible autodc support

1 files changed, 45 insertions, 0 deletions

diff --git a/main/gdnsd/geoip-autodc.patch b/main/gdnsd/geoip-autodc.patch
new file mode 100644
index 000000000..ec88491a1
--- /dev/null
+++ b/main/gdnsd/geoip-autodc.patch
@@ -0,0 +1,45 @@
+From: Timo TerÃs <timo.teras@iki.fi>
+
+plugin_geoip: allow datacenters to be omitted from auto_dc_coords
+    
+sometimes we might need a datacenter to be accessible only via
+overrides of map (via specific territory) or via nets (only
+specific nets). this makes those datacenters to be sorted always
+last.
+
+http://code.google.com/p/gdnsd/issues/detail?id=17
+
+diff --git a/plugins/meta/libgdmaps/gdmaps.c b/plugins/meta/libgdmaps/gdmaps.c
+index b49bfa5..9d20351 100644
+--- a/plugins/meta/libgdmaps/gdmaps.c
++++ b/plugins/meta/libgdmaps/gdmaps.c
+@@ -180,13 +180,13 @@ static dcinfo_t* dcinfo_new(const vscf_data_t* dc_cfg, const vscf_data_t* dc_aut
+         if(!vscf_is_hash(dc_auto_cfg))
+             log_fatal("plugin_geoip: map '%s': auto_dc_coords must be a key-value hash", map_name);
+         const unsigned num_auto = vscf_hash_get_len(dc_auto_cfg);
+-        if(num_auto != num_dcs)
+-            log_fatal("plugin_geoip: map '%s': auto_dc_coords hash must contain one entry for each datacenter in 'datacenters'", map_name);
+-        info->coords = malloc(num_auto * 2 * sizeof(double));
++        info->coords = malloc(num_dcs * 2 * sizeof(double));
++        for(unsigned i = 0; i < 2*num_dcs; i++)
++            info->coords[i] = NAN;
+         for(unsigned i = 0; i < num_auto; i++) {
+             const char* dcname = vscf_hash_get_key_byindex(dc_auto_cfg, i, NULL);
+             unsigned dcidx;
+-            for(dcidx = 0; dcidx < info->num_dcs; dcidx++) {
++            for(dcidx = 0; dcidx < num_dcs; dcidx++) {
+                 if(!strcmp(dcname, info->names[dcidx]))
+                     break;
+             }
+@@ -438,7 +438,10 @@ static unsigned dclists_city_auto_map(dclists_t* lists, const char* map_name, co
+     double dists[store_len];
+     for(unsigned i = 0; i < num_dcs; i++) {
+         const unsigned c_offs = i * 2;
+-        dists[i + 1] = haversine(lat_rad, lon_rad, coords[c_offs], coords[c_offs + 1]);
++        if (coords[c_offs] != NAN)
++            dists[i + 1] = haversine(lat_rad, lon_rad, coords[c_offs], coords[c_offs + 1]);
++        else
++            dists[i + 1] = +INFINITY;
+     }
+ 
+     // Given the relatively small num_dcs of most configs,