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comparison ios/dw.m @ 2786:3934ac8b394c

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iOS: Make dw_file_browse() grant access to security scoped resources. At some point revoke access, so we don't leak kernel resources... so maintain a list of URLs and when the list gets too long revoke access.
author bsmith@81767d24-ef19-dc11-ae90-00e081727c95
date Wed, 13 Jul 2022 04:51:09 +0000
parents af9dc4c2c0df
children 56312f9c1d6c
comparison
equal deleted inserted replaced
2785:220d63da2183 2786:3934ac8b394c
565 void *user = NULL; 565 void *user = NULL;
566 id item = nil; 566 id item = nil;
567 567
568 if([object isKindOfClass:[UITableView class]] && event) 568 if([object isKindOfClass:[UITableView class]] && event)
569 { 569 {
570
571 if([event isKindOfClass:[NSPointerArray class]]) 570 if([event isKindOfClass:[NSPointerArray class]])
572 { 571 {
573 /* The NSPointerArray count will be 2 for Containers */ 572 /* The NSPointerArray count will be 2 for Containers */
574 text = [event pointerAtIndex:0]; 573 text = [event pointerAtIndex:0];
575 user = [event pointerAtIndex:1]; 574 user = [event pointerAtIndex:1];
1090 -(void)documentPicker:(UIDocumentPickerViewController *)controller didPickDocumentsAtURLs:(NSArray<NSURL *> *)urls; 1089 -(void)documentPicker:(UIDocumentPickerViewController *)controller didPickDocumentsAtURLs:(NSArray<NSURL *> *)urls;
1091 -(void)documentPickerWasCancelled:(UIDocumentPickerViewController *)controller; 1090 -(void)documentPickerWasCancelled:(UIDocumentPickerViewController *)controller;
1092 -(void)setDialog:(DWDialog *)newdialog; 1091 -(void)setDialog:(DWDialog *)newdialog;
1093 @end 1092 @end
1094 1093
1094 #define _DW_URL_LIMIT 10
1095 static NSMutableArray *_dw_URLs = nil;
1096
1095 @implementation DWDocumentPickerDelegate 1097 @implementation DWDocumentPickerDelegate
1096 -(void)documentPicker:(UIDocumentPickerViewController *)controller didPickDocumentsAtURLs:(NSArray<NSURL *> *)urls 1098 -(void)documentPicker:(UIDocumentPickerViewController *)controller didPickDocumentsAtURLs:(NSArray<NSURL *> *)urls
1097 { 1099 {
1098 NSURL *url = [urls firstObject]; 1100 NSURL *url = [urls firstObject];
1099 char *file = NULL; 1101 char *file = NULL;
1100 1102
1101 if(url) 1103 if(url)
1102 { 1104 {
1103 const char *tmp = [url fileSystemRepresentation]; 1105 const char *tmp = [url fileSystemRepresentation];
1104 1106
1105 if(tmp) 1107 if(tmp && [url startAccessingSecurityScopedResource])
1108 {
1109 /* We need to allow access to the returned URLs on iOS 13
1110 * but we have no way of knowing when it is no longer needed...
1111 * since the C API we are connected to does not have that information.
1112 * So maintain a list of URLs, and when the list exceeds the limit...
1113 * revoke access to the oldest URL.
1114 */
1115 if(!_dw_URLs)
1116 _dw_URLs = [[[NSMutableArray alloc] init] retain];
1117 if(_dw_URLs)
1118 {
1119 if([_dw_URLs count] >= _DW_URL_LIMIT)
1120 {
1121 NSURL *oldurl = [_dw_URLs firstObject];
1122 [oldurl stopAccessingSecurityScopedResource];
1123 [_dw_URLs removeObject:oldurl];
1124 }
1125 [_dw_URLs addObject:url];
1126 }
1106 file = strdup(tmp); 1127 file = strdup(tmp);
1128 }
1107 } 1129 }
1108 dw_dialog_dismiss(dialog, file); 1130 dw_dialog_dismiss(dialog, file);
1109 } 1131 }
1110 -(void)documentPickerWasCancelled:(UIDocumentPickerViewController *)controller 1132 -(void)documentPickerWasCancelled:(UIDocumentPickerViewController *)controller
1111 { 1133 {