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
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
|
#include <stdlib.h>
#include <stdio.h>
#include <fcntl.h>
#include <unistd.h>
#include <string.h>
#include <fcntl.h>
#include <sys/mman.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <ctype.h>
#include "tdb.h"
/* a tdb tool for manipulating a tdb database */
static TDB_CONTEXT *tdb;
static int print_rec(TDB_CONTEXT *tdb, TDB_DATA key, TDB_DATA dbuf, void *state);
static void print_asc(unsigned char *buf,int len)
{
int i;
for (i=0;i<len;i++)
printf("%c",isprint(buf[i])?buf[i]:'.');
}
static void print_data(unsigned char *buf,int len)
{
int i=0;
if (len<=0) return;
printf("[%03X] ",i);
for (i=0;i<len;) {
printf("%02X ",(int)buf[i]);
i++;
if (i%8 == 0) printf(" ");
if (i%16 == 0) {
print_asc(&buf[i-16],8); printf(" ");
print_asc(&buf[i-8],8); printf("\n");
if (i<len) printf("[%03X] ",i);
}
}
if (i%16) {
int n;
n = 16 - (i%16);
printf(" ");
if (n>8) printf(" ");
while (n--) printf(" ");
n = i%16;
if (n > 8) n = 8;
print_asc(&buf[i-(i%16)],n); printf(" ");
n = (i%16) - n;
if (n>0) print_asc(&buf[i-n],n);
printf("\n");
}
}
static void help(void)
{
printf("
tdbtool:
create dbname : create a database
open dbname : open an existing database
erase : erase the database
dump : dump the database as strings
insert key data : insert a record
store key data : store a record (replace)
show key : show a record by key
delete key : delete a record by key
free : print the database freelist
first : print the first record
next : print the next record
");
}
static void terror(char *why)
{
printf("%s\n", why);
}
static void create_tdb(void)
{
char *tok = strtok(NULL, " ");
if (!tok) {
help();
return;
}
if (tdb) tdb_close(tdb);
tdb = tdb_open(tok, 0, TDB_CLEAR_IF_FIRST,
O_RDWR | O_CREAT | O_TRUNC, 0600);
}
static void open_tdb(void)
{
char *tok = strtok(NULL, " ");
if (!tok) {
help();
return;
}
if (tdb) tdb_close(tdb);
tdb = tdb_open(tok, 0, 0, O_RDWR, 0600);
}
static void insert_tdb(void)
{
char *k = strtok(NULL, " ");
char *d = strtok(NULL, " ");
TDB_DATA key, dbuf;
if (!k || !d) {
help();
return;
}
key.dptr = k;
key.dsize = strlen(k);
dbuf.dptr = d;
dbuf.dsize = strlen(d);
if (tdb_store(tdb, key, dbuf, TDB_INSERT) == -1) {
terror("insert failed");
}
}
static void store_tdb(void)
{
char *k = strtok(NULL, " ");
char *d = strtok(NULL, " ");
TDB_DATA key, dbuf;
if (!k || !d) {
help();
return;
}
key.dptr = k;
key.dsize = strlen(k);
dbuf.dptr = d;
dbuf.dsize = strlen(d);
if (tdb_store(tdb, key, dbuf, TDB_REPLACE) == -1) {
terror("store failed");
}
}
static void show_tdb(void)
{
char *k = strtok(NULL, " ");
TDB_DATA key, dbuf;
if (!k) {
help();
return;
}
key.dptr = k;
key.dsize = strlen(k)+1;
dbuf = tdb_fetch(tdb, key);
if (!dbuf.dptr) terror("fetch failed");
/* printf("%s : %*.*s\n", k, (int)dbuf.dsize, (int)dbuf.dsize, dbuf.dptr); */
print_rec(tdb, key, dbuf, NULL);
}
static void delete_tdb(void)
{
char *k = strtok(NULL, " ");
TDB_DATA key;
if (!k) {
help();
return;
}
key.dptr = k;
key.dsize = strlen(k);
if (tdb_delete(tdb, key) != 0) {
terror("delete failed");
}
}
static int print_rec(TDB_CONTEXT *tdb, TDB_DATA key, TDB_DATA dbuf, void *state)
{
printf("\nkey %d bytes\n", key.dsize);
print_data(key.dptr, key.dsize);
printf("data %d bytes\n", dbuf.dsize);
print_data(dbuf.dptr, dbuf.dsize);
return 0;
}
static int total_bytes;
static int traverse_fn(TDB_CONTEXT *tdb, TDB_DATA key, TDB_DATA dbuf, void *state)
{
total_bytes += dbuf.dsize;
return 0;
}
static void info_tdb(void)
{
int count;
total_bytes = 0;
count = tdb_traverse(tdb, traverse_fn, NULL);
printf("%d records totalling %d bytes\n", count, total_bytes);
}
static char *getline(char *prompt)
{
static char line[1024];
char *p;
fputs(prompt, stdout);
line[0] = 0;
p = fgets(line, sizeof(line)-1, stdin);
if (p) p = strchr(p, '\n');
if (p) *p = 0;
return p?line:NULL;
}
static int do_delete_fn(TDB_CONTEXT *tdb, TDB_DATA key, TDB_DATA dbuf,
void *state)
{
return tdb_delete(tdb, key);
}
static void first_record(TDB_CONTEXT *tdb, TDB_DATA *pkey)
{
TDB_DATA dbuf;
*pkey = tdb_firstkey(tdb);
dbuf = tdb_fetch(tdb, *pkey);
if (!dbuf.dptr) terror("fetch failed");
/* printf("%s : %*.*s\n", k, (int)dbuf.dsize, (int)dbuf.dsize, dbuf.dptr); */
print_rec(tdb, *pkey, dbuf, NULL);
}
static void next_record(TDB_CONTEXT *tdb, TDB_DATA *pkey)
{
TDB_DATA dbuf;
*pkey = tdb_nextkey(tdb, *pkey);
dbuf = tdb_fetch(tdb, *pkey);
if (!dbuf.dptr) terror("fetch failed");
/* printf("%s : %*.*s\n", k, (int)dbuf.dsize, (int)dbuf.dsize, dbuf.dptr); */
print_rec(tdb, *pkey, dbuf, NULL);
}
int main(int argc, char *argv[])
{
char *line;
char *tok;
TDB_DATA iterate_kbuf;
if (argv[1]) {
static char tmp[1024];
sprintf(tmp, "open %s", argv[1]);
tok=strtok(tmp," ");
open_tdb();
}
while ((line = getline("tdb> "))) {
/* Shell command */
if (line[0] == '!') {
system(line + 1);
continue;
}
if ((tok = strtok(line," "))==NULL) {
continue;
}
if (strcmp(tok,"create") == 0) {
create_tdb();
continue;
} else if (strcmp(tok,"open") == 0) {
open_tdb();
continue;
}
/* all the rest require a open database */
if (!tdb) {
terror("database not open");
help();
continue;
}
if (strcmp(tok,"insert") == 0) {
insert_tdb();
} else if (strcmp(tok,"store") == 0) {
store_tdb();
} else if (strcmp(tok,"show") == 0) {
show_tdb();
} else if (strcmp(tok,"erase") == 0) {
tdb_traverse(tdb, do_delete_fn, NULL);
} else if (strcmp(tok,"delete") == 0) {
delete_tdb();
} else if (strcmp(tok,"dump") == 0) {
tdb_traverse(tdb, print_rec, NULL);
} else if (strcmp(tok,"info") == 0) {
info_tdb();
} else if (strcmp(tok, "free") == 0) {
tdb_printfreelist(tdb);
} else if (strcmp(tok, "first") == 0) {
first_record(tdb, &iterate_kbuf);
} else if (strcmp(tok, "next") == 0) {
next_record(tdb, &iterate_kbuf);
} else {
help();
}
}
if (tdb) tdb_close(tdb);
return 0;
}
|
