2 * Copyright (C) 2007 Andre Noll <maan@systemlinux.org>
4 * Licensed under the GPL v2. For licencing details see COPYING.
7 /** \file blob.c Macros and functions for blob handling. */
17 static struct osl_column_description blob_cols
[] = {
19 .storage_type
= OSL_MAPPED_STORAGE
,
20 .storage_flags
= OSL_RBTREE
| OSL_UNIQUE
| OSL_FIXED_SIZE
,
23 .compare_function
= uint32_compare
26 .storage_type
= OSL_MAPPED_STORAGE
,
27 .storage_flags
= OSL_RBTREE
| OSL_UNIQUE
,
29 .compare_function
= string_compare
32 .storage_type
= OSL_DISK_STORAGE
,
38 /** \cond doxygen isn't smart enough to recognize these */
39 INIT_BLOB_TABLE(lyrics
);
40 INIT_BLOB_TABLE(images
);
41 INIT_BLOB_TABLE(moods
);
42 INIT_BLOB_TABLE(playlists
);
45 /** Flags that may be passed to the \p ls functions of each blob type. */
47 /** List both id and name. */
48 BLOB_LS_FLAG_LONG
= 1,
49 /** Reverse sort order. */
50 BLOB_LS_FLAG_REVERSE
= 2,
51 /** Sort by id instead of name. */
52 BLOB_LS_FLAG_SORT_BY_ID
= 4,
55 /** Structure passed to the \p print_blob function. */
56 struct lsblob_action_data
{
58 struct para_buffer pb
;
61 static int print_blob(struct osl_table
*table
, struct osl_row
*row
,
62 const char *name
, void *data
)
64 struct lsblob_action_data
*lbad
= data
;
65 struct osl_object obj
;
69 if (!(lbad
->flags
& BLOB_LS_FLAG_LONG
)) {
70 para_printf(&lbad
->pb
, "%s\n", name
);
73 ret
= osl_get_object(table
, row
, BLOBCOL_ID
, &obj
);
75 para_printf(&lbad
->pb
, "%s: %s\n", name
, PARA_STRERROR(-ret
));
78 id
= *(uint32_t *)obj
.data
;
79 para_printf(&lbad
->pb
, "%u\t%s\n", id
, name
);
83 static int com_lsblob_callback(struct osl_table
*table
,
84 const struct osl_object
*query
, struct osl_object
*result
)
86 struct lsblob_action_data lbad
= {.flags
= *(uint32_t *)query
};
87 struct pattern_match_data pmd
= {
89 .patterns
= {.data
= (char *)query
->data
+ sizeof(uint32_t),
90 .size
= query
->size
- sizeof(uint32_t)},
91 .pm_flags
= PM_NO_PATTERN_MATCHES_EVERYTHING
| PM_SKIP_EMPTY_NAME
,
92 .match_col_num
= BLOBCOL_NAME
,
98 if (lbad
.flags
& BLOB_LS_FLAG_REVERSE
)
99 pmd
.pm_flags
|= PM_REVERSE_LOOP
;
100 if (!(lbad
.flags
& BLOB_LS_FLAG_SORT_BY_ID
))
101 pmd
.loop_col_num
= BLOBCOL_ID
;
103 pmd
.loop_col_num
= BLOBCOL_NAME
;
104 ret
= for_each_matching_row(&pmd
);
106 para_printf(&lbad
.pb
, "%s\n", PARA_STRERROR(-ret
));
109 result
->data
= lbad
.pb
.buf
;
110 result
->size
= lbad
.pb
.size
;
114 static int com_lsblob(callback_function
*f
, int fd
, int argc
, char * const * const argv
)
117 struct osl_object options
= {.data
= &flags
, .size
= sizeof(flags
)},
121 for (i
= 1; i
< argc
; i
++) {
122 const char *arg
= argv
[i
];
125 if (!strcmp(arg
, "--")) {
129 if (!strcmp(arg
, "-l")) {
130 flags
|= BLOB_LS_FLAG_LONG
;
133 if (!strcmp(arg
, "-i")) {
134 flags
|= BLOB_LS_FLAG_SORT_BY_ID
;
137 if (!strcmp(arg
, "-r")) {
138 flags
|= BLOB_LS_FLAG_REVERSE
;
143 // return -E_BLOB_SYNTAX;
144 ret
= send_option_arg_callback_request(&options
, argc
- i
,
145 argv
+ i
, f
, &result
);
147 send_buffer(fd
, (char *)result
.data
);
153 static int cat_blob(struct osl_table
*table
, struct osl_row
*row
,
154 __a_unused
const char *name
, void *data
)
157 struct osl_object
*blobs
= data
;
158 struct osl_object obj
;
160 ret
= osl_open_disk_object(table
, row
, BLOBCOL_DEF
, &obj
);
164 blobs
->data
= para_realloc(blobs
->data
, blobs
->size
+ obj
.size
);
165 memcpy(blobs
->data
+ blobs
->size
, obj
.data
, obj
.size
);
166 blobs
->size
+= obj
.size
;
168 return osl_close_disk_object(&obj
);
171 static int com_catblob_callback(struct osl_table
*table
,
172 const struct osl_object
*query
, struct osl_object
*result
)
175 struct pattern_match_data pmd
= {
178 .loop_col_num
= BLOBCOL_NAME
,
179 .match_col_num
= BLOBCOL_NAME
,
180 .pm_flags
= PM_SKIP_EMPTY_NAME
,
185 ret
= for_each_matching_row(&pmd
);
188 return (ret
> 0)? 0 : ret
;
191 static int com_catblob(callback_function
*f
, int fd
, int argc
,
192 char * const * const argv
)
194 struct osl_object result
;
198 return -E_BLOB_SYNTAX
;
199 ret
= send_standard_callback_request(argc
- 1, argv
+ 1, f
, &result
);
201 ret
= send_bin_buffer(fd
, (char *)result
.data
, result
.size
);
208 struct para_buffer pb
;
209 unsigned num_removed
;
212 static int remove_blob(struct osl_table
*table
, struct osl_row
*row
,
213 const char *name
, void *data
)
215 struct rmblob_data
*rmbd
= data
;
216 int ret
= osl_del_row(table
, row
);
218 para_printf(&rmbd
->pb
, "%s: %s\n", name
, PARA_STRERROR(-ret
));
222 return 1; /* return success to remove other matching blobs. */
225 static int com_rmblob_callback(struct osl_table
*table
,
226 const struct osl_object
*query
,
227 __a_unused
struct osl_object
*result
)
230 struct rmblob_data rmbd
= {.num_removed
= 0};
231 struct pattern_match_data pmd
= {
234 .loop_col_num
= BLOBCOL_NAME
,
235 .match_col_num
= BLOBCOL_NAME
,
236 .pm_flags
= PM_SKIP_EMPTY_NAME
,
238 .action
= remove_blob
241 ret
= for_each_matching_row(&pmd
);
243 para_printf(&rmbd
.pb
, "%s\n", PARA_STRERROR(-ret
));
244 if (!rmbd
.num_removed
)
245 para_printf(&rmbd
.pb
, "no matches, nothing removed\n");
247 para_printf(&rmbd
.pb
, "removed %d blobs\n", rmbd
.num_removed
);
248 result
->data
= rmbd
.pb
.buf
;
249 result
->size
= rmbd
.pb
.size
;
253 static int com_rmblob(callback_function
*f
, __a_unused
int fd
, int argc
,
254 char * const * const argv
)
257 struct osl_object result
;
260 return -E_MOOD_SYNTAX
;
261 ret
= send_option_arg_callback_request(NULL
, argc
- 1, argv
+ 1, f
,
264 send_buffer(fd
, (char *)result
.data
);
270 static int com_addblob_callback(struct osl_table
*table
,
271 const struct osl_object
*query
,
272 __a_unused
struct osl_object
*result
)
274 struct osl_object objs
[NUM_BLOB_COLUMNS
];
275 char *name
= query
->data
;
276 size_t name_len
= strlen(name
) + 1;
281 ret
= osl_get_num_rows(table
, &num_rows
);
284 if (!num_rows
) { /* this is the first entry ever added */
285 /* insert dummy row containing the id */
286 id
= 2; /* this entry will be entry #1, so 2 is the next */
287 objs
[BLOBCOL_ID
].data
= &id
;
288 objs
[BLOBCOL_ID
].size
= sizeof(id
);
289 objs
[BLOBCOL_NAME
].data
= "";
290 objs
[BLOBCOL_NAME
].size
= 1;
291 objs
[BLOBCOL_DEF
].data
= "";
292 objs
[BLOBCOL_DEF
].size
= 1;
293 ret
= osl_add_row(table
, objs
);
297 /* check if name already exists */
299 struct osl_object obj
= {.data
= name
, .size
= name_len
};
300 ret
= osl_get_row(table
, BLOBCOL_NAME
, &obj
, &row
);
301 if (ret
< 0 && ret
!= -E_RB_KEY_NOT_FOUND
)
303 if (ret
>= 0) { /* we already have a blob with this name */
304 obj
.data
= name
+ name_len
;
305 obj
.size
= query
->size
- name_len
;
306 return osl_update_object(table
, row
, BLOBCOL_DEF
, &obj
);
308 /* new blob, get id of the dummy row and increment it */
311 ret
= osl_get_row(table
, BLOBCOL_NAME
, &obj
, &row
);
314 ret
= osl_get_object(table
, row
, BLOBCOL_ID
, &obj
);
317 id
= *(uint32_t *)obj
.data
+ 1;
319 ret
= osl_update_object(table
, row
, BLOBCOL_ID
, &obj
);
324 objs
[BLOBCOL_ID
].data
= &id
;
325 objs
[BLOBCOL_ID
].size
= sizeof(id
);
326 objs
[BLOBCOL_NAME
].data
= name
;
327 objs
[BLOBCOL_NAME
].size
= name_len
;
328 objs
[BLOBCOL_DEF
].data
= name
+ name_len
;
329 objs
[BLOBCOL_DEF
].size
= query
->size
- name_len
;
330 return osl_add_row(table
, objs
);
333 static int com_addblob(callback_function
*f
, int fd
, int argc
,
334 char * const * const argv
)
336 struct osl_object arg_obj
;
339 return -E_BLOB_SYNTAX
;
340 if (!*argv
[1]) /* empty name is reserved for the dummy row */
341 return -E_BLOB_SYNTAX
;
342 PARA_NOTICE_LOG("argv[1]: %s\n", argv
[1]);
343 arg_obj
.size
= strlen(argv
[1]) + 1;
344 arg_obj
.data
= (char *)argv
[1];
345 return stdin_command(fd
, &arg_obj
, f
, 10 * 1024 * 1024, NULL
);
348 static int com_mvblob_callback(struct osl_table
*table
,
349 const struct osl_object
*query
,
350 __a_unused
struct osl_object
*result
)
352 char *src
= (char *) query
->data
;
353 struct osl_object obj
= {.data
= src
, .size
= strlen(src
) + 1};
354 char *dest
= src
+ obj
.size
;
356 int ret
= osl_get_row(table
, BLOBCOL_NAME
, &obj
, &row
);
361 obj
.size
= strlen(dest
) + 1;
362 return osl_update_object(table
, row
, BLOBCOL_NAME
, &obj
);
365 static int com_mvblob(callback_function
*f
, __a_unused
int fd
,
366 int argc
, char * const * const argv
)
369 return -E_MOOD_SYNTAX
;
370 return send_option_arg_callback_request(NULL
, argc
- 1, argv
+ 1, f
,
374 #define DEFINE_BLOB_COMMAND(cmd_name, table_name, cmd_prefix) \
375 static int com_ ## cmd_name ## cmd_prefix ## _callback(const struct osl_object *query, \
376 struct osl_object *output) \
378 return com_ ## cmd_name ## blob_callback(table_name ## _table, query, output); \
380 int com_ ## cmd_name ## cmd_prefix(int fd, int argc, char * const * const argv) \
382 return com_ ## cmd_name ## blob(com_ ## cmd_name ## cmd_prefix ## _callback, fd, argc, argv); \
385 static int blob_get_name_by_id(struct osl_table
*table
, uint32_t id
,
389 struct osl_object obj
= {.data
= &id
, .size
= sizeof(id
)};
395 ret
= osl_get_row(table
, BLOBCOL_ID
, &obj
, &row
);
398 ret
= osl_get_object(table
, row
, BLOBCOL_NAME
, &obj
);
401 *name
= (char *)obj
.data
;
405 /** Define the \p get_name_by_id function for this blob type. */
406 #define DEFINE_GET_NAME_BY_ID(table_name, cmd_prefix) \
407 int cmd_prefix ## _get_name_by_id(uint32_t id, char **name) \
409 return blob_get_name_by_id(table_name ## _table, id, name); \
412 static int blob_get_name_and_def_by_row(struct osl_table
*table
,
413 const struct osl_row
*row
, char **name
, struct osl_object
*def
)
415 struct osl_object obj
;
416 int ret
= osl_get_object(table
, row
, BLOBCOL_NAME
, &obj
);
420 return osl_open_disk_object(table
, row
, BLOBCOL_DEF
, def
);
422 /** Define the \p get_name_and_def_by_row function for this blob type. */
423 #define DEFINE_GET_NAME_AND_DEF_BY_ROW(table_name, cmd_prefix) \
424 int cmd_prefix ## _get_name_and_def_by_row(const struct osl_row *row, \
425 char **name, struct osl_object *def) \
427 return blob_get_name_and_def_by_row(table_name ## _table, \
431 /** Define the \p shutdown function for this blob type. */
432 #define DEFINE_BLOB_SHUTDOWN(table_name) \
433 void table_name ## _shutdown(enum osl_close_flags flags) \
435 osl_close_table(table_name ## _table, flags); \
436 table_name ## _table = NULL; \
439 static int blob_init(struct osl_table
**table
,
440 struct osl_table_description
*desc
,
441 struct table_info
*ti
, const char *db
)
446 ret
= osl_open_table(ti
->desc
, table
);
450 return ret
== -E_NOENT
? 1 : ret
;
453 /** Define the \p init function for this blob type. */
454 #define DEFINE_BLOB_INIT(table_name) \
455 int table_name ## _init(struct table_info *ti, const char *db) \
457 return blob_init(&table_name ## _table, \
458 &table_name ## _table_desc, ti, db); \
462 /** Define all functions for this blob type. */
463 #define DEFINE_BLOB_FUNCTIONS(table_name, cmd_prefix) \
464 DEFINE_BLOB_COMMAND(ls, table_name, cmd_prefix) \
465 DEFINE_BLOB_COMMAND(cat, table_name, cmd_prefix) \
466 DEFINE_BLOB_COMMAND(add, table_name, cmd_prefix) \
467 DEFINE_BLOB_COMMAND(rm, table_name, cmd_prefix) \
468 DEFINE_BLOB_COMMAND(mv, table_name, cmd_prefix) \
469 DEFINE_GET_NAME_BY_ID(table_name, cmd_prefix); \
470 DEFINE_GET_NAME_AND_DEF_BY_ROW(table_name, cmd_prefix); \
471 DEFINE_BLOB_SHUTDOWN(table_name); \
472 DEFINE_BLOB_INIT(table_name);
474 /** \cond doxygen isn't smart enough to recognize these */
475 DEFINE_BLOB_FUNCTIONS(lyrics
, lyr
);
476 DEFINE_BLOB_FUNCTIONS(images
, img
);
477 DEFINE_BLOB_FUNCTIONS(moods
, mood
);
478 DEFINE_BLOB_FUNCTIONS(playlists
, pl
);