2 * services/view.c - named views containing local zones authority service.
4 * Copyright (c) 2016, NLnet Labs. All rights reserved.
6 * This software is open source.
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9 * modification, are permitted provided that the following conditions
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39 * This file contains functions to enable named views that can hold local zone
43 #include "services/view.h"
44 #include "services/localzone.h"
45 #include "util/config_file.h"
48 view_cmp(const void* v1, const void* v2)
50 struct view* a = (struct view*)v1;
51 struct view* b = (struct view*)v2;
53 return strcmp(a->name, b->name);
59 struct views* v = (struct views*)calloc(1,
63 rbtree_init(&v->vtree, &view_cmp);
64 lock_rw_init(&v->lock);
65 lock_protect(&v->lock, &v->vtree, sizeof(v->vtree));
69 /** This prototype is defined in in respip.h, but we want to avoid
70 * unnecessary dependencies */
71 void respip_set_delete(struct respip_set *set);
74 view_delete(struct view* v)
78 lock_rw_destroy(&v->lock);
79 local_zones_delete(v->local_zones);
80 respip_set_delete(v->respip_set);
86 delviewnode(rbnode_type* n, void* ATTR_UNUSED(arg))
88 struct view* v = (struct view*)n;
93 views_delete(struct views* v)
97 lock_rw_destroy(&v->lock);
98 traverse_postorder(&v->vtree, delviewnode, NULL);
102 /** create a new view */
104 view_create(char* name)
106 struct view* v = (struct view*)calloc(1, sizeof(*v));
110 if(!(v->name = strdup(name))) {
114 lock_rw_init(&v->lock);
115 lock_protect(&v->lock, &v->name, sizeof(*v)-sizeof(rbnode_type));
119 /** enter a new view returns with WRlock */
121 views_enter_view_name(struct views* vs, char* name)
123 struct view* v = view_create(name);
125 log_err("out of memory");
130 lock_rw_wrlock(&vs->lock);
131 lock_rw_wrlock(&v->lock);
132 if(!rbtree_insert(&vs->vtree, &v->node)) {
133 log_warn("duplicate view: %s", name);
134 lock_rw_unlock(&v->lock);
136 lock_rw_unlock(&vs->lock);
139 lock_rw_unlock(&vs->lock);
144 views_apply_cfg(struct views* vs, struct config_file* cfg)
146 struct config_view* cv;
148 struct config_file lz_cfg;
149 /* Check existence of name in first view (last in config). Rest of
150 * views are already checked when parsing config. */
151 if(cfg->views && !cfg->views->name) {
152 log_err("view without a name");
155 for(cv = cfg->views; cv; cv = cv->next) {
156 /* create and enter view */
157 if(!(v = views_enter_view_name(vs, cv->name)))
159 v->isfirst = cv->isfirst;
160 if(cv->local_zones || cv->local_data) {
161 if(!(v->local_zones = local_zones_create())){
162 lock_rw_unlock(&v->lock);
165 memset(&lz_cfg, 0, sizeof(lz_cfg));
166 lz_cfg.local_zones = cv->local_zones;
167 lz_cfg.local_data = cv->local_data;
168 lz_cfg.local_zones_nodefault =
169 cv->local_zones_nodefault;
171 /* Do not add defaults to view-specific
172 * local-zone when global local zone will be
174 struct config_strlist* nd;
175 lz_cfg.local_zones_disable_default = 1;
176 /* Add nodefault zones to list of zones to add,
177 * so they will be used as if they are
178 * configured as type transparent */
179 for(nd = cv->local_zones_nodefault; nd;
181 char* nd_str, *nd_type;
182 nd_str = strdup(nd->str);
184 log_err("out of memory");
185 lock_rw_unlock(&v->lock);
188 nd_type = strdup("nodefault");
190 log_err("out of memory");
192 lock_rw_unlock(&v->lock);
195 if(!cfg_str2list_insert(
196 &lz_cfg.local_zones, nd_str,
198 log_err("failed to insert "
199 "default zones into "
203 lock_rw_unlock(&v->lock);
208 if(!local_zones_apply_cfg(v->local_zones, &lz_cfg)){
209 lock_rw_unlock(&v->lock);
212 /* local_zones, local_zones_nodefault and local_data
213 * are free'd from config_view by local_zones_apply_cfg.
214 * Set pointers to NULL. */
215 cv->local_zones = NULL;
216 cv->local_data = NULL;
217 cv->local_zones_nodefault = NULL;
219 lock_rw_unlock(&v->lock);
224 /** find a view by name */
226 views_find_view(struct views* vs, const char* name, int write)
231 key.name = (char *)name;
232 lock_rw_rdlock(&vs->lock);
233 if(!(v = (struct view*)rbtree_search(&vs->vtree, &key.node))) {
234 lock_rw_unlock(&vs->lock);
238 lock_rw_wrlock(&v->lock);
240 lock_rw_rdlock(&v->lock);
242 lock_rw_unlock(&vs->lock);
246 void views_print(struct views* v)
248 /* TODO implement print */