1 #ifdef FOSSIL_ENABLE_JSON
2 /*
3 ** Copyright (c) 2011 D. Richard Hipp
4 **
5 ** This program is free software; you can redistribute it and/or
6 ** modify it under the terms of the Simplified BSD License (also
7 ** known as the "2-Clause License" or "FreeBSD License".)
8 **
9 ** This program is distributed in the hope that it will be useful,
10 ** but without any warranty; without even the implied warranty of
11 ** merchantability or fitness for a particular purpose.
12 **
13 ** Author contact information:
14 ** drh@hwaci.com
15 ** http://www.hwaci.com/drh/
16 **
17 */
18 #include "VERSION.h"
19 #include "config.h"
20 #include "json_dir.h"
21
22 #if INTERFACE
23 #include "json_detail.h"
24 #endif
25
26 static cson_value * json_page_dir_list();
27 /*
28 ** Mapping of /json/wiki/XXX commands/paths to callbacks.
29 */
30 #if 0 /* TODO: Not used? */
31 static const JsonPageDef JsonPageDefs_Dir[] = {
32 /* Last entry MUST have a NULL name. */
33 {NULL,NULL,0}
34 };
35 #endif
36
37 #if 0 /* TODO: Not used? */
38 static char const * json_dir_path_extra(){
39 static char const * zP = NULL;
40 if( !zP ){
41 zP = g.zExtra;
42 while(zP && *zP && ('/'==*zP)){
43 ++zP;
44 }
45 }
46 return zP;
47 }
48 #endif
49
50 /*
51 ** Impl of /json/dir. 98% of it was taken directly
52 ** from browse.c::page_dir()
53 */
json_page_dir_list()54 static cson_value * json_page_dir_list(){
55 cson_object * zPayload = NULL; /* return value */
56 cson_array * zEntries = NULL; /* accumulated list of entries. */
57 cson_object * zEntry = NULL; /* a single dir/file entry. */
58 cson_array * keyStore = NULL; /* garbage collector for shared strings. */
59 cson_string * zKeyName = NULL;
60 cson_string * zKeySize = NULL;
61 cson_string * zKeyIsDir = NULL;
62 cson_string * zKeyUuid = NULL;
63 cson_string * zKeyTime = NULL;
64 cson_string * zKeyRaw = NULL;
65 char * zD = NULL;
66 char const * zDX = NULL;
67 int nD;
68 char * zUuid = NULL;
69 char const * zCI = NULL;
70 Manifest * pM = NULL;
71 Stmt q = empty_Stmt;
72 int rid = 0;
73 if( !g.perm.Read ){
74 json_set_err(FSL_JSON_E_DENIED, "Requires 'o' permissions.");
75 return NULL;
76 }
77 zCI = json_find_option_cstr("checkin",NULL,"ci" );
78
79 /* If a specific check-in is requested, fetch and parse it. If the
80 ** specific check-in does not exist, clear zCI. zCI==0 will cause all
81 ** files from all check-ins to be displayed.
82 */
83 if( zCI && *zCI ){
84 pM = manifest_get_by_name(zCI, &rid);
85 if( pM ){
86 zUuid = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", rid);
87 }else{
88 json_set_err(FSL_JSON_E_UNRESOLVED_UUID,
89 "Check-in name [%s] is unresolved.",
90 zCI);
91 return NULL;
92 }
93 }
94
95 /* Jump through some hoops to find the directory name... */
96 zDX = json_find_option_cstr("name",NULL,NULL);
97 if(!zDX && !g.isHTTP){
98 zDX = json_command_arg(g.json.dispatchDepth+1);
99 }
100 if(zDX && (!*zDX || (0==strcmp(zDX,"/")))){
101 zDX = NULL;
102 }
103 zD = zDX ? fossil_strdup(zDX) : NULL;
104 nD = zD ? strlen(zD)+1 : 0;
105 while( nD>1 && zD[nD-2]=='/' ){ zD[(--nD)-1] = 0; }
106
107 sqlite3_create_function(g.db, "pathelement", 2, SQLITE_UTF8, 0,
108 pathelementFunc, 0, 0);
109
110 /* Compute the temporary table "localfiles" containing the names
111 ** of all files and subdirectories in the zD[] directory.
112 **
113 ** Subdirectory names begin with "/". This causes them to sort
114 ** first and it also gives us an easy way to distinguish files
115 ** from directories in the loop that follows.
116 */
117
118 if( zCI ){
119 Stmt ins;
120 ManifestFile *pFile;
121 ManifestFile *pPrev = 0;
122 int nPrev = 0;
123 int c;
124
125 db_multi_exec(
126 "CREATE TEMP TABLE json_dir_files("
127 " n UNIQUE NOT NULL," /* file name */
128 " fn UNIQUE NOT NULL," /* full file name */
129 " u DEFAULT NULL," /* file uuid */
130 " sz DEFAULT -1," /* file size */
131 " mtime DEFAULT NULL" /* file mtime in unix epoch format */
132 ");"
133 );
134
135 db_prepare(&ins,
136 "INSERT OR IGNORE INTO json_dir_files (n,fn,u,sz,mtime) "
137 "SELECT"
138 " pathelement(:path,0),"
139 " CASE WHEN %Q IS NULL THEN '' ELSE %Q||'/' END ||:abspath,"
140 " a.uuid,"
141 " a.size,"
142 " CAST(strftime('%%s',e.mtime) AS INTEGER) "
143 "FROM"
144 " mlink m, "
145 " event e,"
146 " blob a,"
147 " blob b "
148 "WHERE"
149 " e.objid=m.mid"
150 " AND a.rid=m.fid"/*FILE artifact*/
151 " AND b.rid=m.mid"/*CHECKIN artifact*/
152 " AND a.uuid=:uuid",
153 zD, zD
154 );
155 manifest_file_rewind(pM);
156 while( (pFile = manifest_file_next(pM,0))!=0 ){
157 if( nD>0
158 && ((pFile->zName[nD-1]!='/') || (0!=memcmp(pFile->zName, zD, nD-1)))
159 ){
160 continue;
161 }
162 /*printf("zD=%s, nD=%d, pFile->zName=%s\n", zD, nD, pFile->zName);*/
163 if( pPrev
164 && memcmp(&pFile->zName[nD],&pPrev->zName[nD],nPrev)==0
165 && (pFile->zName[nD+nPrev]==0 || pFile->zName[nD+nPrev]=='/')
166 ){
167 continue;
168 }
169 db_bind_text( &ins, ":path", &pFile->zName[nD] );
170 db_bind_text( &ins, ":abspath", &pFile->zName[nD] );
171 db_bind_text( &ins, ":uuid", pFile->zUuid );
172 db_step(&ins);
173 db_reset(&ins);
174 pPrev = pFile;
175 for(nPrev=0; (c=pPrev->zName[nD+nPrev]) && c!='/'; nPrev++){}
176 if( c=='/' ) nPrev++;
177 }
178 db_finalize(&ins);
179 }else if( zD && *zD ){
180 db_multi_exec(
181 "CREATE TEMP VIEW json_dir_files AS"
182 " SELECT DISTINCT(pathelement(name,%d)) AS n,"
183 " %Q||'/'||name AS fn,"
184 " NULL AS u, NULL AS sz, NULL AS mtime"
185 " FROM filename"
186 " WHERE name GLOB '%q/*'"
187 " GROUP BY n",
188 nD, zD, zD
189 );
190 }else{
191 db_multi_exec(
192 "CREATE TEMP VIEW json_dir_files"
193 " AS SELECT DISTINCT(pathelement(name,0)) AS n, NULL AS fn"
194 " FROM filename"
195 );
196 }
197
198 if(zCI){
199 db_prepare( &q, "SELECT"
200 " n as name,"
201 " fn as fullname,"
202 " u as uuid,"
203 " sz as size,"
204 " mtime as mtime "
205 "FROM json_dir_files ORDER BY n");
206 }else{/* UUIDs are all NULL. */
207 db_prepare( &q, "SELECT n, fn FROM json_dir_files ORDER BY n");
208 }
209
210 zKeyName = cson_new_string("name",4);
211 zKeyUuid = cson_new_string("uuid",4);
212 zKeyIsDir = cson_new_string("isDir",5);
213 keyStore = cson_new_array();
214 cson_array_append( keyStore, cson_string_value(zKeyName) );
215 cson_array_append( keyStore, cson_string_value(zKeyUuid) );
216 cson_array_append( keyStore, cson_string_value(zKeyIsDir) );
217
218 if( zCI ){
219 zKeySize = cson_new_string("size",4);
220 cson_array_append( keyStore, cson_string_value(zKeySize) );
221 zKeyTime = cson_new_string("timestamp",9);
222 cson_array_append( keyStore, cson_string_value(zKeyTime) );
223 zKeyRaw = cson_new_string("downloadPath",12);
224 cson_array_append( keyStore, cson_string_value(zKeyRaw) );
225 }
226 zPayload = cson_new_object();
227 cson_object_set_s( zPayload, zKeyName,
228 json_new_string((zD&&*zD) ? zD : "/") );
229 if( zUuid ){
230 cson_object_set( zPayload, "checkin", json_new_string(zUuid) );
231 }
232
233 while( (SQLITE_ROW==db_step(&q)) ){
234 cson_value * name = NULL;
235 char const * n = db_column_text(&q,0);
236 char const isDir = ('/'==*n);
237 zEntry = cson_new_object();
238 if(!zEntries){
239 zEntries = cson_new_array();
240 cson_object_set( zPayload, "entries", cson_array_value(zEntries) );
241 }
242 cson_array_append(zEntries, cson_object_value(zEntry) );
243 if(isDir){
244 name = json_new_string( n+1 );
245 cson_object_set_s(zEntry, zKeyIsDir, cson_value_true() );
246 } else{
247 name = json_new_string( n );
248 }
249 cson_object_set_s(zEntry, zKeyName, name );
250 if( zCI && !isDir){
251 /* Don't add the uuid/size for dir entries - that data refers to
252 one of the files in that directory :/. Entries with no
253 --checkin may refer to N versions, and therefore we cannot
254 associate a single size and uuid with them (and fetching all
255 would be overkill for most use cases).
256 */
257 char const * fullName = db_column_text(&q,1);
258 char const * u = db_column_text(&q,2);
259 sqlite_int64 const sz = db_column_int64(&q,3);
260 sqlite_int64 const ts = db_column_int64(&q,4);
261 cson_object_set_s(zEntry, zKeyUuid, json_new_string( u ) );
262 cson_object_set_s(zEntry, zKeySize,
263 cson_value_new_integer( (cson_int_t)sz ));
264 cson_object_set_s(zEntry, zKeyTime,
265 cson_value_new_integer( (cson_int_t)ts ));
266 cson_object_set_s(zEntry, zKeyRaw,
267 json_new_string_f("/raw/%T?name=%t",
268 fullName, u));
269 }
270 }
271 db_finalize(&q);
272 if(pM){
273 manifest_destroy(pM);
274 }
275 cson_free_array( keyStore );
276
277 free( zUuid );
278 free( zD );
279 return cson_object_value(zPayload);
280 }
281
282 /*
283 ** Implements the /json/dir family of pages/commands.
284 **
285 */
json_page_dir()286 cson_value * json_page_dir(){
287 #if 1
288 return json_page_dir_list();
289 #else
290 return json_page_dispatch_helper(&JsonPageDefs_Dir[0]);
291 #endif
292 }
293
294 #endif /* FOSSIL_ENABLE_JSON */
295