Line data Source code
1 : #include "../../burp.h"
2 : #include "../../alloc.h"
3 : #include "../../bu.h"
4 : #include "../../cstat.h"
5 : #include "../../conffile.h"
6 : #include "../../fsops.h"
7 : #include "../../lock.h"
8 : #include "../../log.h"
9 : #include "../../strlist.h"
10 : #include "../bu_get.h"
11 : #include "../sdirs.h"
12 : #include "cstat.h"
13 :
14 : #ifndef UTEST
15 : static
16 : #endif
17 19 : int cstat_permitted(struct cstat *cstat,
18 : struct conf **parentconfs, struct conf **cconfs)
19 : {
20 : struct strlist *rclient;
21 : const char *parentconf_cname;
22 :
23 19 : parentconf_cname=get_string(parentconfs[OPT_CNAME]);
24 19 : if(!parentconf_cname) return 0;
25 :
26 : // Allow clients to look at themselves.
27 4 : if(!strcmp(cstat->name, parentconf_cname)) return 1;
28 :
29 : // Do not allow clients using the restore_client option to see more
30 : // than the client that it is pretending to be.
31 3 : if(get_string(parentconfs[OPT_RESTORE_CLIENT])) return 0;
32 :
33 : // If we are listed in this restore_client list.
34 4 : for(rclient=get_strlist(cconfs[OPT_RESTORE_CLIENTS]);
35 : rclient; rclient=rclient->next)
36 3 : if(!strcmp(get_string(parentconfs[OPT_CNAME]), rclient->path))
37 : return 1;
38 : return 0;
39 : }
40 :
41 15 : static int set_cstat_from_conf(struct cstat *cstat,
42 : struct conf **parentconfs, struct conf **cconfs)
43 : {
44 15 : struct strlist *s=NULL;
45 : // Make sure the permitted flag is set appropriately.
46 15 : cstat->permitted=cstat_permitted(cstat, parentconfs, cconfs);
47 :
48 15 : cstat->protocol=get_protocol(cconfs);
49 15 : sdirs_free((struct sdirs **)&cstat->sdirs);
50 30 : if(!(cstat->sdirs=sdirs_alloc())
51 15 : || sdirs_init_from_confs((struct sdirs *)cstat->sdirs, cconfs))
52 : return -1;
53 15 : strlists_free(&cstat->labels);
54 21 : for(s=get_strlist(cconfs[OPT_LABEL]); s; s=s->next)
55 6 : if(strlist_add_sorted(&cstat->labels, s->path, s->flag))
56 : return -1;
57 : return 0;
58 : }
59 :
60 : #ifndef UTEST
61 : static
62 : #endif
63 23 : int cstat_get_client_names(struct cstat **clist, const char *clientconfdir)
64 : {
65 23 : int i=0;
66 23 : int n=0;
67 23 : int ret=-1;
68 : struct cstat *c;
69 : struct cstat *cnew;
70 23 : struct dirent **dir=NULL;
71 :
72 23 : if(entries_in_directory_no_sort(clientconfdir, &dir, &n, 1 /*atime*/))
73 : {
74 : logp("scandir failed for %s in %s: %s\n",
75 1 : clientconfdir, __func__, strerror(errno));
76 1 : goto end;
77 : }
78 72 : for(i=0; i<n; i++)
79 : {
80 : // looks_like...() also avoids '.' and '..'.
81 72 : if(looks_like_tmp_or_hidden_file(dir[i]->d_name))
82 : continue;
83 167 : for(c=*clist; c; c=c->next)
84 : {
85 114 : if(!c->name) continue;
86 114 : if(!strcmp(dir[i]->d_name, c->name))
87 : break;
88 : }
89 70 : if(c) continue;
90 :
91 : // We do not have this client yet. Add it.
92 53 : if(!(cnew=cstat_alloc())
93 53 : || cstat_init_with_cntr(cnew, dir[i]->d_name, clientconfdir))
94 : goto end;
95 53 : cstat_add_to_list(clist, cnew);
96 : }
97 :
98 : ret=0;
99 : end:
100 23 : if(dir)
101 : {
102 72 : for(i=0; i<n; i++) free_v((void **)&dir[i]);
103 22 : free_v((void **)&dir);
104 : }
105 23 : return ret;
106 : }
107 :
108 : static void cstat_free_w(struct cstat **cstat)
109 : {
110 8 : sdirs_free((struct sdirs **)&(*cstat)->sdirs);
111 8 : cstat_free(cstat);
112 : }
113 :
114 : #ifndef UTEST
115 : static
116 : #endif
117 8 : void cstat_remove(struct cstat **clist, struct cstat **cstat)
118 : {
119 : struct cstat *c;
120 8 : if(!cstat || !*cstat) return;
121 8 : if(*clist==*cstat)
122 : {
123 4 : *clist=(*clist)->next;
124 4 : if(*clist) (*clist)->prev=NULL;
125 : cstat_free_w(cstat);
126 4 : *cstat=*clist;
127 4 : return;
128 : }
129 7 : for(c=*clist; c; c=c->next)
130 : {
131 7 : if(c->next!=*cstat)
132 : continue;
133 4 : c->next=(*cstat)->next;
134 4 : if(c->next)
135 3 : c->next->prev=(*cstat)->prev;
136 : cstat_free_w(cstat);
137 4 : *cstat=*clist;
138 4 : return;
139 : }
140 : }
141 :
142 : // Returns -1 on error, otherwise the number of clients that were reloaded.
143 : #ifndef UTEST
144 : static
145 : #endif
146 12 : int cstat_reload_from_client_confs(struct cstat **clist,
147 : struct conf **globalcs, struct conf **cconfs)
148 : {
149 : struct cstat *c;
150 : struct stat statp;
151 : static time_t global_mtime=0;
152 12 : time_t global_mtime_new=0;
153 : const char *globalconffile;
154 12 : int reloaded=0;
155 :
156 12 : globalconffile=get_string(globalcs[OPT_CONFFILE]);
157 :
158 12 : if(stat(globalconffile, &statp)
159 12 : || !S_ISREG(statp.st_mode))
160 : {
161 : logp("Could not stat main conf file %s: %s\n",
162 1 : globalconffile, strerror(errno));
163 1 : return -1;
164 : }
165 11 : global_mtime_new=statp.st_mtime;
166 :
167 : // FIX THIS: If '. included' conf files have changed, this code will
168 : // not detect them. I guess that conf.c should make a list of them.
169 : while(1)
170 : {
171 41 : for(c=*clist; c; c=c->next)
172 : {
173 : // Look at the client conf files to see if they have
174 : // changed, and reload bits and pieces if they have.
175 :
176 31 : if(!c->conffile) continue;
177 62 : if(stat(c->conffile, &statp)
178 31 : || !S_ISREG(statp.st_mode))
179 : {
180 3 : cstat_remove(clist, &c);
181 3 : break; // Go to the beginning of the list.
182 : }
183 28 : if(statp.st_mtime==c->conf_mtime
184 12 : && global_mtime_new==global_mtime)
185 : {
186 : // The conf files have not changed - no need to
187 : // do anything.
188 : continue;
189 : }
190 16 : c->conf_mtime=statp.st_mtime;
191 :
192 16 : confs_free_content(cconfs);
193 16 : if(set_string(cconfs[OPT_CNAME], c->name))
194 : return -1;
195 16 : if(conf_load_clientconfdir(globalcs, cconfs))
196 : {
197 : // If the file has junk in it, we will keep
198 : // trying to reload it after removal.
199 : // So, just deny permission to view it.
200 1 : c->permitted=0;
201 1 : continue;
202 : }
203 :
204 15 : if(set_cstat_from_conf(c, globalcs, cconfs))
205 : return -1;
206 15 : reloaded++;
207 : }
208 : // Only stop if the end of the list was not reached.
209 13 : if(!c) break;
210 : }
211 11 : if(global_mtime!=global_mtime_new)
212 3 : global_mtime=global_mtime_new;
213 11 : return reloaded;
214 : }
215 :
216 16 : void cstat_set_run_status(struct cstat *cstat)
217 : {
218 : struct stat statp;
219 16 : struct sdirs *sdirs=(struct sdirs *)cstat->sdirs;
220 16 : if(!cstat->permitted) return;
221 :
222 28 : if(lstat(sdirs->lock->path, &statp))
223 : {
224 16 : if(lstat(sdirs->working, &statp))
225 6 : cstat->run_status=RUN_STATUS_IDLE;
226 : else
227 2 : cstat->run_status=RUN_STATUS_CLIENT_CRASHED;
228 : }
229 : else
230 : {
231 6 : if(!lock_test(sdirs->lock->path)) // Could have got lock.
232 4 : cstat->run_status=RUN_STATUS_SERVER_CRASHED;
233 : else
234 2 : cstat->run_status=RUN_STATUS_RUNNING;
235 : }
236 :
237 : return;
238 : }
239 :
240 : // Return -1 on error, or the number of reloaded clients.
241 : #ifndef UTEST
242 : static
243 : #endif
244 10 : int reload_from_clientdir(struct cstat **clist)
245 : {
246 10 : int reloaded=0;
247 : struct cstat *c;
248 33 : for(c=*clist; c; c=c->next)
249 : {
250 23 : time_t ltime=0;
251 : struct stat statp;
252 : struct stat lstatp;
253 : struct sdirs *sdirs;
254 :
255 42 : if(!c->permitted) continue;
256 :
257 8 : sdirs=(struct sdirs *)c->sdirs;
258 8 : if(!sdirs || !sdirs->client) continue;
259 16 : if(stat(sdirs->client, &statp))
260 : {
261 : // No clientdir.
262 2 : if(!c->run_status)
263 2 : cstat_set_run_status(c);
264 : continue;
265 : }
266 12 : if(!lstat(sdirs->lock->path, &lstatp))
267 2 : ltime=lstatp.st_mtime;
268 6 : if(statp.st_mtime==c->clientdir_mtime
269 4 : && ltime==c->lockfile_mtime
270 2 : && c->run_status!=RUN_STATUS_SERVER_CRASHED)
271 : //&& !c->cntr)
272 : {
273 : // clientdir has not changed - no need to do anything.
274 : continue;
275 : }
276 4 : c->clientdir_mtime=statp.st_mtime;
277 4 : c->lockfile_mtime=ltime;
278 4 : cstat_set_run_status(c);
279 :
280 4 : bu_list_free(&c->bu);
281 : // FIX THIS: should probably not load everything each time.
282 : // if(bu_get_current(sdirs, &c->bu))
283 : // goto error;
284 4 : if(bu_get_list_with_working(sdirs, &c->bu, c))
285 : goto error;
286 4 : reloaded++;
287 : }
288 : return reloaded;
289 : error:
290 0 : return -1;
291 : }
292 :
293 2 : int cstat_load_data_from_disk(struct cstat **clist, struct conf **globalcs,
294 : struct conf **cconfs)
295 : {
296 2 : if(!globalcs) return -1;
297 : return cstat_get_client_names(clist,
298 2 : get_string(globalcs[OPT_CLIENTCONFDIR]))
299 2 : || cstat_reload_from_client_confs(clist, globalcs, cconfs)<0
300 4 : || reload_from_clientdir(clist)<0;
301 : }
302 :
303 26 : int cstat_set_backup_list(struct cstat *cstat)
304 : {
305 26 : struct bu *bu=NULL;
306 :
307 : // Free any previous list.
308 26 : bu_list_free(&cstat->bu);
309 :
310 26 : if(!cstat->permitted) return 0;
311 :
312 24 : if(bu_get_list_with_working((struct sdirs *)cstat->sdirs, &bu, cstat))
313 : {
314 : //logp("error when looking up current backups\n");
315 : return 0;
316 : }
317 :
318 : // Find the end of the list just loaded, so we can traverse
319 : // it backwards later.
320 50 : while(bu && bu->next) bu=bu->next;
321 :
322 23 : cstat->bu=bu;
323 23 : return 0;
324 : }
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