1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
|
/* Copyright (C) 2019 C. McEnroe <june@causal.agency>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include <err.h>
#include <errno.h>
#include <limits.h>
#include <sqlite3.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include <sysexits.h>
#define DATABASE_PATH "litterbox/litterbox.sqlite"
enum { DatabaseVersion = 0 };
enum Type {
Privmsg,
Notice,
Join,
Part,
Kick,
Quit,
Nick,
Topic,
};
static inline sqlite3 *dbOpen(char *path, int flags) {
char *base = strrchr(path, '/');
if (flags & SQLITE_OPEN_CREATE && base) {
*base = '\0';
int error = mkdir(path, 0700);
if (error && errno != EEXIST) err(EX_CANTCREAT, "%s", path);
*base = '/';
}
sqlite3 *db;
int error = sqlite3_open_v2(path, &db, flags, NULL);
if (error == SQLITE_CANTOPEN) {
sqlite3_close(db);
return NULL;
}
if (error) errx(EX_NOINPUT, "%s: %s", path, sqlite3_errmsg(db));
sqlite3_busy_timeout(db, 1000);
error = sqlite3_exec(db, "PRAGMA foreign_keys = true;", NULL, NULL, NULL);
if (error) errx(EX_SOFTWARE, "sqlite3_exec: %s", sqlite3_errmsg(db));
return db;
}
static inline sqlite3 *dbFind(int flags) {
const char *home = getenv("HOME");
const char *dataHome = getenv("XDG_DATA_HOME");
const char *dataDirs = getenv("XDG_DATA_DIRS");
char path[PATH_MAX];
if (dataHome) {
snprintf(path, sizeof(path), "%s/" DATABASE_PATH, dataHome);
} else {
if (!home) errx(EX_CONFIG, "HOME unset");
snprintf(path, sizeof(path), "%s/.local/share/" DATABASE_PATH, home);
}
sqlite3 *db = dbOpen(path, flags);
if (db) return db;
if (!dataDirs) dataDirs = "/usr/local/share:/usr/share";
while (*dataDirs) {
size_t len = strcspn(dataDirs, ":");
snprintf(path, sizeof(path), "%.*s/" DATABASE_PATH, (int)len, dataDirs);
db = dbOpen(path, flags);
if (db) return db;
dataDirs += len;
if (*dataDirs) dataDirs++;
}
return NULL;
}
static inline int dbVersion(sqlite3 *db) {
sqlite3_stmt *stmt;
int error = sqlite3_prepare_v2(db, "PRAGMA user_version;", -1, &stmt, NULL);
if (error) errx(EX_SOFTWARE, "sqlite3_prepare_v2: %s", sqlite3_errmsg(db));
error = sqlite3_step(stmt);
if (error != SQLITE_ROW) {
errx(EX_SOFTWARE, "sqlite3_step: %s", sqlite3_errmsg(db));
}
int version = sqlite3_column_int(stmt, 0);
sqlite3_finalize(stmt);
return version;
}
static const char *InitSQL = {
"BEGIN TRANSACTION;"
"CREATE TABLE networks ("
"id INTEGER PRIMARY KEY,"
"name TEXT NOT NULL UNIQUE"
");"
"CREATE TABLE contexts ("
"id INTEGER PRIMARY KEY,"
"networkID INTEGER NOT NULL REFERENCES networks,"
"name TEXT NOT NULL,"
"query BOOLEAN NOT NULL,"
"UNIQUE (networkID, name)"
");"
"CREATE TABLE names ("
"id INTEGER PRIMARY KEY,"
"nick TEXT NOT NULL,"
"user TEXT NOT NULL,"
"host TEXT NOT NULL,"
"UNIQUE (nick, user, host)"
");"
"CREATE TABLE events ("
"id INTEGER PRIMARY KEY,"
"time DATETIME NOT NULL,"
"type INTEGER NOT NULL,"
"contextID INTEGER NOT NULL REFERENCES contexts,"
"nameID INTEGER NOT NULL REFERENCES names,"
"target TEXT,"
"message TEXT"
");"
// TODO: Create other indexes on events?
"CREATE VIRTUAL TABLE search USING fts5 ("
"message,"
"content = events,"
"content_rowid = id,"
"tokenize = 'porter'"
");"
"CREATE TRIGGER eventsInsert AFTER INSERT ON events BEGIN"
" INSERT INTO search (rowid, message) VALUES (new.id, new.message);"
"END;"
"COMMIT TRANSACTION;"
};
static inline void dbInit(sqlite3 *db) {
int error = sqlite3_exec(db, InitSQL, NULL, NULL, NULL);
if (error) errx(EX_SOFTWARE, "sqlite3_exec: %s", sqlite3_errmsg(db));
}
static const char *MigrationSQL[] = {
NULL,
};
static inline void dbMigrate(sqlite3 *db) {
for (int version = dbVersion(db); version < DatabaseVersion; ++version) {
int error = sqlite3_exec(db, MigrationSQL[version], NULL, NULL, NULL);
if (error) errx(EX_SOFTWARE, "sqlite3_exec: %s", sqlite3_errmsg(db));
}
}
|