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