Commit | Line | Data |
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34d725a5 FT |
1 | #include <stdlib.h> |
2 | #include <stdio.h> | |
3 | #include <db.h> | |
4 | #include <string.h> | |
5 | #include <ashd/utils.h> | |
6 | #include <ashd/log.h> | |
7 | #include <time.h> | |
8 | ||
9 | #include "statserve.h" | |
10 | ||
11 | struct dbsrc { | |
12 | char *envnm; | |
13 | DB_ENV *env; | |
14 | DB *db; | |
15 | time_t lastcp, lastar; | |
16 | }; | |
17 | ||
ea4e0b71 FT |
18 | int dbpagesize = 0; |
19 | ||
34d725a5 FT |
20 | static struct fileinfo dbserve(struct source *src, char *nm) |
21 | { | |
22 | struct dbsrc *d = src->pdata; | |
23 | int i, ret, ver; | |
24 | DBT k, v; | |
25 | size_t sz; | |
26 | void *hp, *p; | |
27 | struct fileinfo retf; | |
28 | ||
29 | memset(&k, 0, sizeof(k)); | |
30 | memset(&v, 0, sizeof(v)); | |
31 | k.size = strlen(k.data = nm); | |
32 | v.flags = DB_DBT_MALLOC; | |
33 | do { | |
34 | ret = d->db->get(d->db, NULL, &k, &v, 0); | |
35 | } while(ret == DB_LOCK_DEADLOCK); | |
36 | if(ret == 0) { | |
37 | hp = v.data; | |
38 | sz = v.size; | |
39 | if(sz < 1) | |
40 | goto corrupt; | |
41 | ver = *(uint8_t *)hp; | |
42 | hp++; sz--; | |
43 | if(ver == 1) { | |
44 | if(sz < 8) | |
45 | goto corrupt; | |
46 | memset(&retf, 0, sizeof(retf)); | |
47 | for(i = 0, retf.mtime = 0; i < 8; i++) { | |
48 | retf.mtime = (retf.mtime << 8) | (*(uint8_t *)hp); | |
49 | hp++; sz--; | |
50 | } | |
51 | if(retf.mtime < 0) | |
52 | goto corrupt; | |
53 | if((p = memchr(hp, 0, sz)) == NULL) | |
54 | goto corrupt; | |
55 | p++; | |
56 | if(p - hp > 64) | |
57 | goto corrupt; | |
58 | strcpy(retf.ctype, hp); | |
59 | sz -= p - hp; hp = p; | |
60 | retf.data = memcpy(smalloc(retf.sz = sz), hp, sz); | |
61 | free(v.data); | |
62 | return(retf); | |
63 | } else { | |
64 | goto corrupt; | |
65 | } | |
66 | } else if(ret == DB_NOTFOUND) { | |
67 | return((struct fileinfo){}); | |
68 | } else { | |
69 | flog(LOG_ERR, "could not read value of %s in %s: %s", nm, d->envnm, db_strerror(ret)); | |
70 | return((struct fileinfo){}); | |
71 | } | |
72 | goto out; | |
73 | ||
74 | corrupt: | |
75 | flog(LOG_ERR, "entry for %s in %s is corrupted", nm, d->envnm); | |
76 | free(v.data); | |
77 | return((struct fileinfo){}); | |
78 | out:; | |
79 | } | |
80 | ||
81 | static void dbidle(struct source *src) | |
82 | { | |
83 | struct dbsrc *d = src->pdata; | |
84 | time_t now; | |
85 | int ret; | |
86 | char **files; | |
87 | ||
88 | now = time(NULL); | |
89 | if(now - d->lastcp > 1800) { | |
90 | d->lastcp = now; | |
91 | if((ret = d->env->txn_checkpoint(d->env, 5000, 0, 0)) != 0) { | |
92 | flog(LOG_ERR, "could not make db checkpoint in %s: %s", d->envnm, db_strerror(ret)); | |
93 | } | |
94 | } | |
95 | if(now - d->lastar > 7200) { | |
96 | d->lastar = now; | |
97 | files = NULL; | |
98 | if((ret = d->env->log_archive(d->env, &files, DB_ARCH_REMOVE)) != 0) { | |
99 | flog(LOG_ERR, "could not archive log files in %s: %s", d->envnm, db_strerror(ret)); | |
100 | } | |
101 | if(files != NULL) | |
102 | free(files); | |
103 | } | |
104 | } | |
105 | ||
106 | static void enverror(const DB_ENV *env, const char *prefix, const char *msg) | |
107 | { | |
108 | flog(LOG_ERR, "dbsource: environment error: %s", msg); | |
109 | } | |
110 | ||
111 | struct source *mkdbsrc(char *path, char *envpath) | |
112 | { | |
113 | struct source *src; | |
114 | struct dbsrc *d; | |
115 | char *p; | |
116 | int ret; | |
117 | ||
118 | omalloc(src); | |
119 | src->serve = dbserve; | |
120 | src->idle = dbidle; | |
121 | src->pdata = omalloc(d); | |
122 | if((ret = db_env_create(&d->env, 0)) != 0) { | |
123 | flog(LOG_ERR, "could not create bdb environment: %s", db_strerror(ret)); | |
124 | exit(1); | |
125 | } | |
126 | if(envpath) { | |
127 | d->envnm = sstrdup(envpath); | |
128 | } else { | |
129 | d->envnm = sstrdup(path); | |
130 | if((p = strrchr(d->envnm, '/')) == NULL) { | |
131 | free(d->envnm); | |
132 | d->envnm = sstrdup("."); | |
133 | } else { | |
134 | *p = 0; | |
135 | } | |
136 | } | |
137 | if((ret = d->env->open(d->env, d->envnm, DB_CREATE | DB_INIT_MPOOL | DB_INIT_LOCK | DB_INIT_LOG | DB_INIT_TXN, 0666)) != 0) { | |
138 | flog(LOG_ERR, "could not open bdb environment: %s", db_strerror(ret)); | |
139 | exit(1); | |
140 | } | |
141 | d->env->set_lk_detect(d->env, DB_LOCK_RANDOM); | |
142 | d->env->set_errcall(d->env, enverror); | |
143 | if((ret = db_create(&d->db, d->env, 0)) != 0) { | |
144 | flog(LOG_ERR, "could not create bdb database: %s", db_strerror(ret)); | |
145 | exit(1); | |
146 | } | |
ea4e0b71 FT |
147 | if(dbpagesize) { |
148 | if((ret = d->db->set_pagesize(d->db, dbpagesize)) != 0) { | |
149 | flog(LOG_ERR, "could not set bdb page size (to %i): %s", dbpagesize, db_strerror(ret)); | |
150 | exit(1); | |
151 | } | |
152 | } | |
34d725a5 FT |
153 | if((ret = d->db->open(d->db, NULL, path, NULL, DB_HASH, DB_AUTO_COMMIT | DB_CREATE, 0666)) != 0) { |
154 | flog(LOG_ERR, "could not open bdb database: %s", db_strerror(ret)); | |
155 | exit(1); | |
156 | } | |
157 | return(src); | |
158 | } |