mirrored from git://git.moodle.org/moodle.git
/
backuplib.php
355 lines (301 loc) · 14.1 KB
/
backuplib.php
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
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
<?PHP //$Id$
//This php script contains all the stuff to backup/restore
//forum mods
//This is the "graphical" structure of the forum mod:
//
// forum
// (CL,pk->id)
// |
// -----------------------------------
// | |
// subscriptions forum_discussions
// (UL,pk->id, fk->forum) (UL,pk->id, fk->forum)
// |
// |
// |
// forum_posts
// (UL,pk->id,fk->discussion,nt->parent,files)
// |
// |
// |
// forum_ratings
// (UL,pk->id,fk->post)
//
// Meaning: pk->primary key field of the table
// fk->foreign key to link with parent
// nt->nested field (recursive data)
// CL->course level info
// UL->user level info
// files->table may have files)
//
//-----------------------------------------------------------
function forum_backup_mods($bf,$preferences) {
global $CFG;
$status = true;
//Iterate over forum table
$forums = get_records ("forum","course",$preferences->backup_course,"id");
if ($forums) {
foreach ($forums as $forum) {
//Start mod
fwrite ($bf,start_tag("MOD",3,true));
//Print forum data
fwrite ($bf,full_tag("ID",4,false,$forum->id));
fwrite ($bf,full_tag("MODTYPE",4,false,"forum"));
fwrite ($bf,full_tag("TYPE",4,false,$forum->type));
fwrite ($bf,full_tag("NAME",4,false,$forum->name));
fwrite ($bf,full_tag("INTRO",4,false,$forum->intro));
fwrite ($bf,full_tag("OPEN",4,false,$forum->open));
fwrite ($bf,full_tag("ASSESSED",4,false,$forum->assessed));
fwrite ($bf,full_tag("ASSESSPUBLIC",4,false,$forum->assesspublic));
fwrite ($bf,full_tag("ASSESSTIMESTART",4,false,$forum->assesstimestart));
fwrite ($bf,full_tag("ASSESSTIMEFINISH",4,false,$forum->assesstimefinish));
fwrite ($bf,full_tag("MAXBYTES",4,false,$forum->maxbytes));
fwrite ($bf,full_tag("SCALE",4,false,$forum->scale));
fwrite ($bf,full_tag("FORCESUBSCRIBE",4,false,$forum->forcesubscribe));
fwrite ($bf,full_tag("TIMEMODIFIED",4,false,$forum->timemodified));
//if we've selected to backup users info, then execute backup_forum_suscriptions and
//backup_forum_discussions
if ($preferences->mods["forum"]->userinfo) {
$status = backup_forum_subscriptions($bf,$preferences,$forum->id);
if ($status) {
$status = backup_forum_discussions($bf,$preferences,$forum->id);
}
}
//End mod
$status =fwrite ($bf,end_tag("MOD",3,true));
}
}
//if we've selected to backup users info, then backup files too
if ($status) {
if ($preferences->mods["forum"]->userinfo) {
$status = backup_forum_files($bf,$preferences);
}
}
return $status;
}
//Backup forum_subscriptions contents (executed from forum_backup_mods)
function backup_forum_subscriptions ($bf,$preferences,$forum) {
global $CFG;
$status = true;
$forum_subscriptions = get_records("forum_subscriptions","forum",$forum,"id");
//If there is subscriptions
if ($forum_subscriptions) {
//Write start tag
$status =fwrite ($bf,start_tag("SUBSCRIPTIONS",4,true));
//Iterate over each answer
foreach ($forum_subscriptions as $for_sus) {
//Start suscription
$status =fwrite ($bf,start_tag("SUBSCRIPTION",5,true));
//Print forum_subscriptions contents
fwrite ($bf,full_tag("ID",6,false,$for_sus->id));
fwrite ($bf,full_tag("USERID",6,false,$for_sus->userid));
//End subscription
$status =fwrite ($bf,end_tag("SUBSCRIPTION",5,true));
}
//Write end tag
$status =fwrite ($bf,end_tag("SUBSCRIPTIONS",4,true));
}
return $status;
}
//Backup forum_discussions contents (executed from forum_backup_mods)
function backup_forum_discussions ($bf,$preferences,$forum) {
global $CFG;
$status = true;
$forum_discussions = get_records("forum_discussions","forum",$forum,"id");
//If there are discussions
if ($forum_discussions) {
//Write start tag
$status =fwrite ($bf,start_tag("DISCUSSIONS",4,true));
//Iterate over each discussion
foreach ($forum_discussions as $for_dis) {
//Start discussion
$status =fwrite ($bf,start_tag("DISCUSSION",5,true));
//Print forum_discussions contents
fwrite ($bf,full_tag("ID",6,false,$for_dis->id));
fwrite ($bf,full_tag("NAME",6,false,$for_dis->name));
fwrite ($bf,full_tag("FIRSTPOST",6,false,$for_dis->firstpost));
fwrite ($bf,full_tag("USERID",6,false,$for_dis->userid));
fwrite ($bf,full_tag("ASSESSED",6,false,$for_dis->assessed));
fwrite ($bf,full_tag("TIMEMODIFIED",6,false,$for_dis->timemodified));
//Now print posts to xml
$status = backup_forum_posts($bf,$preferences,$for_dis->id);
//End discussion
$status =fwrite ($bf,end_tag("DISCUSSION",5,true));
}
//Write end tag
$status =fwrite ($bf,end_tag("DISCUSSIONS",4,true));
}
return $status;
}
//Backup forum_posts contents (executed from backup_forum_discussions)
function backup_forum_posts ($bf,$preferences,$discussion) {
global $CFG;
$status = true;
$forum_posts = get_records("forum_posts","discussion",$discussion,"id");
//If there are posts
if ($forum_posts) {
//Write start tag
$status =fwrite ($bf,start_tag("POSTS",6,true));
//Iterate over each post
foreach ($forum_posts as $for_pos) {
//Start post
$status =fwrite ($bf,start_tag("POST",7,true));
//Print forum_posts contents
fwrite ($bf,full_tag("ID",8,false,$for_pos->id));
fwrite ($bf,full_tag("PARENT",8,false,$for_pos->parent));
fwrite ($bf,full_tag("USERID",8,false,$for_pos->userid));
fwrite ($bf,full_tag("CREATED",8,false,$for_pos->created));
fwrite ($bf,full_tag("MODIFIED",8,false,$for_pos->modified));
fwrite ($bf,full_tag("MAILED",8,false,$for_pos->mailed));
fwrite ($bf,full_tag("SUBJECT",8,false,$for_pos->subject));
fwrite ($bf,full_tag("MESSAGE",8,false,$for_pos->message));
fwrite ($bf,full_tag("FORMAT",8,false,$for_pos->format));
fwrite ($bf,full_tag("ATTACHMENT",8,false,$for_pos->attachment));
fwrite ($bf,full_tag("TOTALSCORE",8,false,$for_pos->totalscore));
//Now print ratings to xml
$status = backup_forum_ratings($bf,$preferences,$for_pos->id);
//End discussion
$status =fwrite ($bf,end_tag("POST",7,true));
}
//Write end tag
$status =fwrite ($bf,end_tag("POSTS",6,true));
}
return $status;
}
//Backup forum_ratings contents (executed from backup_forum_posts)
function backup_forum_ratings ($bf,$preferences,$post) {
global $CFG;
$status = true;
$forum_ratings = get_records("forum_ratings","post",$post,"id");
//If there are ratings
if ($forum_ratings) {
//Write start tag
$status =fwrite ($bf,start_tag("RATINGS",8,true));
//Iterate over each rating
foreach ($forum_ratings as $for_rat) {
//Start rating
$status =fwrite ($bf,start_tag("RATING",9,true));
//Print forum_rating contents
fwrite ($bf,full_tag("ID",10,false,$for_rat->id));
fwrite ($bf,full_tag("USERID",10,false,$for_rat->userid));
fwrite ($bf,full_tag("TIME",10,false,$for_rat->time));
fwrite ($bf,full_tag("POST_RATING",10,false,$for_rat->rating));
//End rating
$status =fwrite ($bf,end_tag("RATING",9,true));
}
//Write end tag
$status =fwrite ($bf,end_tag("RATINGS",8,true));
}
return $status;
}
//Backup forum files because we've selected to backup user info
//and files are user info's level
function backup_forum_files($bf,$preferences) {
global $CFG;
$status = true;
//First we check to moddata exists and create it as necessary
//in temp/backup/$backup_code dir
$status = check_and_create_moddata_dir($preferences->backup_unique_code);
//Now copy the forum dir
if ($status) {
//Only if it exists !! Thanks to Daniel Miksik.
if (is_dir($CFG->dataroot."/".$preferences->backup_course."/".$CFG->moddata."/forum")) {
$status = backup_copy_file($CFG->dataroot."/".$preferences->backup_course."/".$CFG->moddata."/forum",
$CFG->dataroot."/temp/backup/".$preferences->backup_unique_code."/moddata/forum");
}
}
return $status;
}
////Return an array of info (name,value)
function forum_check_backup_mods($course,$user_data=false,$backup_unique_code) {
//First the course data
$info[0][0] = get_string("modulenameplural","forum");
if ($ids = forum_ids ($course)) {
$info[0][1] = count($ids);
} else {
$info[0][1] = 0;
}
//Now, if requested, the user_data
if ($user_data) {
//Subscriptions
$info[1][0] = get_string("subscriptions","forum");
if ($ids = forum_subscription_ids_by_course ($course)) {
$info[1][1] = count($ids);
} else {
$info[1][1] = 0;
}
//Discussions
$info[2][0] = get_string("discussions","forum");
if ($ids = forum_discussion_ids_by_course ($course)) {
$info[2][1] = count($ids);
} else {
$info[2][1] = 0;
}
//Posts
$info[3][0] = get_string("posts","forum");
if ($ids = forum_post_ids_by_course ($course)) {
$info[3][1] = count($ids);
} else {
$info[3][1] = 0;
}
//Ratings
$info[4][0] = get_string("ratings","forum");
if ($ids = forum_rating_ids_by_course ($course)) {
$info[4][1] = count($ids);
} else {
$info[4][1] = 0;
}
}
return $info;
}
// INTERNAL FUNCTIONS. BASED IN THE MOD STRUCTURE
//Returns an array of forums id
function forum_ids ($course) {
global $CFG;
return get_records_sql ("SELECT a.id, a.course
FROM {$CFG->prefix}forum a
WHERE a.course = '$course'");
}
//Returns an array of forum subscriptions id
function forum_subscription_ids_by_course ($course) {
global $CFG;
return get_records_sql ("SELECT s.id , s.forum
FROM {$CFG->prefix}forum_subscriptions s,
{$CFG->prefix}forum a
WHERE a.course = '$course' AND
s.forum = a.id");
}
//Returns an array of forum discussions id
function forum_discussion_ids_by_course ($course) {
global $CFG;
return get_records_sql ("SELECT s.id , s.forum
FROM {$CFG->prefix}forum_discussions s,
{$CFG->prefix}forum a
WHERE a.course = '$course' AND
s.forum = a.id");
}
//Returns an array of forum posts id
function forum_post_ids_by_course ($course) {
global $CFG;
return get_records_sql ("SELECT p.id , p.discussion, s.forum
FROM {$CFG->prefix}forum_posts p,
{$CFG->prefix}forum_discussions s,
{$CFG->prefix}forum a
WHERE a.course = '$course' AND
s.forum = a.id AND
p.discussion = s.id");
}
//Returns an array of ratings posts id
function forum_rating_ids_by_course ($course) {
global $CFG;
return get_records_sql ("SELECT r.id, r.post, p.discussion, s.forum
FROM {$CFG->prefix}forum_ratings r,
{$CFG->prefix}forum_posts p,
{$CFG->prefix}forum_discussions s,
{$CFG->prefix}forum a
WHERE a.course = '$course' AND
s.forum = a.id AND
p.discussion = s.id AND
r.post = p.id");
}
?>