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-rw-r--r--ot_accesslist.c23
1 files changed, 13 insertions, 10 deletions
diff --git a/ot_accesslist.c b/ot_accesslist.c
index 4df7edb..85dd27a 100644
--- a/ot_accesslist.c
+++ b/ot_accesslist.c
@@ -53,26 +53,29 @@ static void accesslist_readfile( void ) {
53 fprintf( stderr, "Warning: Not enough memory to allocate %zd bytes for accesslist buffer. May succeed later.\n", ( maplen / 41 ) * 20 ); 53 fprintf( stderr, "Warning: Not enough memory to allocate %zd bytes for accesslist buffer. May succeed later.\n", ( maplen / 41 ) * 20 );
54 return; 54 return;
55 } 55 }
56 56
57 /* No use to scan if there's not enough room for another full info_hash */ 57 /* No use to scan if there's not enough room for another full info_hash */
58 map_end = map + maplen - 40; 58 map_end = map + maplen - 40;
59 read_offs = map; 59 read_offs = map;
60 60
61 /* We do ignore anything that is not of the form "^[:xdigit:]{40}[^:xdigit:].*" */ 61 /* We do ignore anything that is not of the form "^[:xdigit:]{40}[^:xdigit:].*" */
62 while( read_offs < map_end ) { 62 while( read_offs + 40 <= map_end ) {
63 int i; 63 int i;
64 for( i=0; i<(int)sizeof(ot_hash); ++i ) { 64 for( i=0; i<(int)sizeof(ot_hash); ++i ) {
65 int eger = 16 * scan_fromhex( read_offs[ 2*i ] ) + scan_fromhex( read_offs[ 1 + 2*i ] ); 65 int eger1 = scan_fromhex( read_offs[ 2*i ] );
66 if( eger < 0 ) 66 int eger2 = scan_fromhex( read_offs[ 1 + 2*i ] );
67 continue; 67 if( eger1 < 0 || eger2 < 0 )
68 (*info_hash)[i] = eger; 68 break;
69 (*info_hash)[i] = eger1 * 16 + eger2;
69 } 70 }
70 71
71 read_offs += 40; 72 if( i == sizeof(ot_hash) ) {
73 read_offs += 40;
72 74
73 /* Append accesslist to accesslist vector */ 75 /* Append accesslist to accesslist vector */
74 if( scan_fromhex( *read_offs ) < 0 ) 76 if( read_offs == map_end || scan_fromhex( *read_offs ) < 0 )
75 ++info_hash; 77 ++info_hash;
78 }
76 79
77 /* Find start of next line */ 80 /* Find start of next line */
78 while( read_offs < map_end && *(read_offs++) != '\n' ); 81 while( read_offs < map_end && *(read_offs++) != '\n' );