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author | t3sserakt <t3ss@posteo.de> | 2021-07-02 20:31:58 +0200 |
---|---|---|
committer | t3sserakt <t3ss@posteo.de> | 2021-07-02 20:32:35 +0200 |
commit | b102545f61cb1e8e3172871c6a3634790bd39398 (patch) | |
tree | 475f4ab36c7e933531c681864ed5d2693ad62a99 | |
parent | c4240e04b4cd3956f88c3b1da988345fcd4414fc (diff) | |
parent | e8db1a67cdd270d655e677ffff52f72d5fe4000b (diff) | |
download | gnunet-b102545f61cb1e8e3172871c6a3634790bd39398.tar.gz gnunet-b102545f61cb1e8e3172871c6a3634790bd39398.zip |
Merge branch 'master' of ssh://gnunet.org/gnunet
-rwxr-xr-x | contrib/scripts/netjail/netjail_core.sh | 17 | ||||
-rwxr-xr-x | contrib/scripts/netjail/netjail_setup_internet.sh | 50 | ||||
-rw-r--r-- | src/dht/gnunet-service-dht_neighbours.c | 104 |
3 files changed, 100 insertions, 71 deletions
diff --git a/contrib/scripts/netjail/netjail_core.sh b/contrib/scripts/netjail/netjail_core.sh index 1cdbca816..d070f7220 100755 --- a/contrib/scripts/netjail/netjail_core.sh +++ b/contrib/scripts/netjail/netjail_core.sh | |||
@@ -28,6 +28,23 @@ netjail_opt() { | |||
28 | printf "%d" 0 | 28 | printf "%d" 0 |
29 | } | 29 | } |
30 | 30 | ||
31 | netjail_opts() { | ||
32 | local OPT=$1 | ||
33 | local DEF=$2 | ||
34 | shift 2 | ||
35 | |||
36 | while [ $# -gt 0 ]; do | ||
37 | if [ "$1" = "$OPT" ]; then | ||
38 | printf "$2" | ||
39 | return | ||
40 | fi | ||
41 | |||
42 | shift 1 | ||
43 | done | ||
44 | |||
45 | printf "$DEF" | ||
46 | } | ||
47 | |||
31 | netjail_check() { | 48 | netjail_check() { |
32 | local NODE_COUNT=$1 | 49 | local NODE_COUNT=$1 |
33 | local FD_COUNT=$(($(ls /proc/self/fd | wc -w) - 4)) | 50 | local FD_COUNT=$(($(ls /proc/self/fd | wc -w) - 4)) |
diff --git a/contrib/scripts/netjail/netjail_setup_internet.sh b/contrib/scripts/netjail/netjail_setup_internet.sh index de8ef8f15..6ae047274 100755 --- a/contrib/scripts/netjail/netjail_setup_internet.sh +++ b/contrib/scripts/netjail/netjail_setup_internet.sh | |||
@@ -9,15 +9,25 @@ export PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin" | |||
9 | LOCAL_M=$1 | 9 | LOCAL_M=$1 |
10 | GLOBAL_N=$2 | 10 | GLOBAL_N=$2 |
11 | 11 | ||
12 | # TODO: globally known peer? | ||
13 | |||
14 | shift 2 | 12 | shift 2 |
15 | 13 | ||
16 | netjail_check $(($LOCAL_M * $GLOBAL_N)) | 14 | netjail_check $(($LOCAL_M * $GLOBAL_N)) |
17 | 15 | ||
18 | # Starts optionally 'stunserver' on "92.68.150.$(($GLOBAL_N + 1))": | 16 | # Starts optionally an amount of nodes without NAT starting with "92.68.151.1" |
17 | KNOWN=$(netjail_opt '--known' $@) | ||
18 | KNOWN_NUM=$(netjail_opts '--known' 0 $@) | ||
19 | |||
20 | # Starts optionally 'stunserver' on "92.68.150.254": | ||
19 | STUN=$(netjail_opt '--stun' $@) | 21 | STUN=$(netjail_opt '--stun' $@) |
20 | 22 | ||
23 | if [ $KNOWN -gt 0 ]; then | ||
24 | shift 2 | ||
25 | |||
26 | KNOWN=$KNOWN_NUM | ||
27 | |||
28 | netjail_check $(($LOCAL_M * $GLOBAL_N + $KNOWN)) | ||
29 | fi | ||
30 | |||
21 | if [ $STUN -gt 0 ]; then | 31 | if [ $STUN -gt 0 ]; then |
22 | netjail_check_bin stunserver | 32 | netjail_check_bin stunserver |
23 | 33 | ||
@@ -30,19 +40,27 @@ netjail_check_bin $1 | |||
30 | 40 | ||
31 | LOCAL_GROUP="192.168.15" | 41 | LOCAL_GROUP="192.168.15" |
32 | GLOBAL_GROUP="92.68.150" | 42 | GLOBAL_GROUP="92.68.150" |
43 | KNOWN_GROUP="92.68.151" | ||
33 | 44 | ||
34 | CLEANUP=0 | 45 | CLEANUP=0 |
35 | echo "Start [local: $LOCAL_GROUP.0/24, global: $GLOBAL_GROUP.0/24, stun: $STUN]" | 46 | echo "Start [local: $LOCAL_GROUP.0/24, global: $GLOBAL_GROUP.0/16, stun: $STUN]" |
36 | 47 | ||
37 | NETWORK_NET=$(netjail_print_name "n" $GLOBAL_N $LOCAL_M) | 48 | NETWORK_NET=$(netjail_print_name "n" $GLOBAL_N $LOCAL_M) |
38 | 49 | ||
39 | netjail_bridge $NETWORK_NET | 50 | netjail_bridge $NETWORK_NET |
40 | 51 | ||
52 | for X in $(seq $KNOWN); do | ||
53 | KNOWN_NODE=$(netjail_print_name "K" $X) | ||
54 | |||
55 | netjail_node $KNOWN_NODE | ||
56 | netjail_node_link_bridge $KNOWN_NODE $NETWORK_NET "$KNOWN_GROUP.$X" 16 | ||
57 | done | ||
58 | |||
41 | for N in $(seq $GLOBAL_N); do | 59 | for N in $(seq $GLOBAL_N); do |
42 | ROUTER=$(netjail_print_name "R" $N) | 60 | ROUTER=$(netjail_print_name "R" $N) |
43 | 61 | ||
44 | netjail_node $ROUTER | 62 | netjail_node $ROUTER |
45 | netjail_node_link_bridge $ROUTER $NETWORK_NET "$GLOBAL_GROUP.$N" 24 | 63 | netjail_node_link_bridge $ROUTER $NETWORK_NET "$GLOBAL_GROUP.$N" 16 |
46 | 64 | ||
47 | ROUTER_NET=$(netjail_print_name "r" $N) | 65 | ROUTER_NET=$(netjail_print_name "r" $N) |
48 | 66 | ||
@@ -72,16 +90,27 @@ KILLING="" | |||
72 | 90 | ||
73 | if [ $STUN -gt 0 ]; then | 91 | if [ $STUN -gt 0 ]; then |
74 | netjail_node $STUN_NODE | 92 | netjail_node $STUN_NODE |
75 | netjail_node_link_bridge $STUN_NODE $NETWORK_NET "$GLOBAL_GROUP.254" 24 | 93 | netjail_node_link_bridge $STUN_NODE $NETWORK_NET "$GLOBAL_GROUP.254" 16 |
76 | 94 | ||
77 | netjail_node_exec $STUN_NODE 0 1 stunserver & | 95 | netjail_node_exec $STUN_NODE 0 1 stunserver & |
78 | KILLING="$!" | 96 | KILLING="$!" |
79 | fi | 97 | fi |
80 | 98 | ||
99 | for X in $(seq $KNOWN); do | ||
100 | KNOWN_NODE=$(netjail_print_name "K" $X) | ||
101 | INDEX=$(($X - 1)) | ||
102 | |||
103 | FD_X=$(($INDEX * 2 + 3 + 0)) | ||
104 | FD_Y=$(($INDEX * 2 + 3 + 1)) | ||
105 | |||
106 | netjail_node_exec $KNOWN_NODE $FD_X $FD_Y $@ & | ||
107 | WAITING="$! $WAITING" | ||
108 | done | ||
109 | |||
81 | for N in $(seq $GLOBAL_N); do | 110 | for N in $(seq $GLOBAL_N); do |
82 | for M in $(seq $LOCAL_M); do | 111 | for M in $(seq $LOCAL_M); do |
83 | NODE=$(netjail_print_name "N" $N $M) | 112 | NODE=$(netjail_print_name "N" $N $M) |
84 | INDEX=$(($LOCAL_M * ($N - 1) + $M - 1)) | 113 | INDEX=$(($LOCAL_M * ($N - 1) + $M - 1 + $KNOWN)) |
85 | 114 | ||
86 | FD_X=$(($INDEX * 2 + 3 + 0)) | 115 | FD_X=$(($INDEX * 2 + 3 + 0)) |
87 | FD_Y=$(($INDEX * 2 + 3 + 1)) | 116 | FD_Y=$(($INDEX * 2 + 3 + 1)) |
@@ -99,6 +128,13 @@ cleanup() { | |||
99 | netjail_node_clear $STUN_NODE | 128 | netjail_node_clear $STUN_NODE |
100 | fi | 129 | fi |
101 | 130 | ||
131 | for X in $(seq $KNOWN); do | ||
132 | KNOWN_NODE=$(netjail_print_name "K" $X) | ||
133 | |||
134 | netjail_node_unlink_bridge $KNOWN_NODE $NETWORK_NET | ||
135 | netjail_node_clear $KNOWN_NODE | ||
136 | done | ||
137 | |||
102 | for N in $(seq $GLOBAL_N); do | 138 | for N in $(seq $GLOBAL_N); do |
103 | ROUTER_NET=$(netjail_print_name "r" $N) | 139 | ROUTER_NET=$(netjail_print_name "r" $N) |
104 | 140 | ||
diff --git a/src/dht/gnunet-service-dht_neighbours.c b/src/dht/gnunet-service-dht_neighbours.c index 88b0c5d92..2c30f0b68 100644 --- a/src/dht/gnunet-service-dht_neighbours.c +++ b/src/dht/gnunet-service-dht_neighbours.c | |||
@@ -1,6 +1,6 @@ | |||
1 | /* | 1 | /* |
2 | This file is part of GNUnet. | 2 | This file is part of GNUnet. |
3 | Copyright (C) 2009-2017 GNUnet e.V. | 3 | Copyright (C) 2009-2017, 2021 GNUnet e.V. |
4 | 4 | ||
5 | GNUnet is free software: you can redistribute it and/or modify it | 5 | GNUnet is free software: you can redistribute it and/or modify it |
6 | under the terms of the GNU Affero General Public License as published | 6 | under the terms of the GNU Affero General Public License as published |
@@ -877,63 +877,36 @@ get_forward_count (uint32_t hop_count, | |||
877 | 877 | ||
878 | 878 | ||
879 | /** | 879 | /** |
880 | * Compute the distance between have and target as a 32-bit value. | 880 | * Compute the distance between have and target as a 64-bit value. |
881 | * Differences in the lower bits must count stronger than differences | 881 | * Differences in the lower bits must count stronger than differences |
882 | * in the higher bits. | 882 | * in the higher bits. |
883 | * | 883 | * |
884 | * @param target | 884 | * @param target |
885 | * @param have | 885 | * @param have |
886 | * @param bucket up to which offset are @a target and @a have identical and thus those bits should not be considered | ||
886 | * @return 0 if have==target, otherwise a number | 887 | * @return 0 if have==target, otherwise a number |
887 | * that is larger as the distance between | 888 | * that is larger as the distance between |
888 | * the two hash codes increases | 889 | * the two hash codes increases |
889 | */ | 890 | */ |
890 | static unsigned int | 891 | static uint64_t |
891 | get_distance (const struct GNUNET_HashCode *target, | 892 | get_distance (const struct GNUNET_HashCode *target, |
892 | const struct GNUNET_HashCode *have) | 893 | const struct GNUNET_HashCode *have, |
894 | unsigned int bucket) | ||
893 | { | 895 | { |
894 | unsigned int bucket; | 896 | uint64_t lsb = 0; |
895 | unsigned int msb; | 897 | |
896 | unsigned int lsb; | 898 | for (unsigned int i = bucket + 1; |
897 | unsigned int i; | 899 | (i < sizeof(struct GNUNET_HashCode) * 8) && |
898 | 900 | (i < bucket + 1 + 64); | |
899 | /* We have to represent the distance between two 2^9 (=512)-bit | ||
900 | * numbers as a 2^5 (=32)-bit number with "0" being used for the | ||
901 | * two numbers being identical; furthermore, we need to | ||
902 | * guarantee that a difference in the number of matching | ||
903 | * bits is always represented in the result. | ||
904 | * | ||
905 | * We use 2^32/2^9 numerical values to distinguish between | ||
906 | * hash codes that have the same LSB bit distance and | ||
907 | * use the highest 2^9 bits of the result to signify the | ||
908 | * number of (mis)matching LSB bits; if we have 0 matching | ||
909 | * and hence 512 mismatching LSB bits we return -1 (since | ||
910 | * 512 itself cannot be represented with 9 bits) *//* first, calculate the most significant 9 bits of our | ||
911 | * result, aka the number of LSBs */bucket = GNUNET_CRYPTO_hash_matching_bits (target, | ||
912 | have); | ||
913 | /* bucket is now a value between 0 and 512 */ | ||
914 | if (bucket == 512) | ||
915 | return 0; /* perfect match */ | ||
916 | if (bucket == 0) | ||
917 | return (unsigned int) -1; /* LSB differs; use max (if we did the bit-shifting | ||
918 | * below, we'd end up with max+1 (overflow)) */ | ||
919 | |||
920 | /* calculate the most significant bits of the final result */ | ||
921 | msb = (512 - bucket) << (32 - 9); | ||
922 | /* calculate the 32-9 least significant bits of the final result by | ||
923 | * looking at the differences in the 32-9 bits following the | ||
924 | * mismatching bit at 'bucket' */ | ||
925 | lsb = 0; | ||
926 | for (i = bucket + 1; | ||
927 | (i < sizeof(struct GNUNET_HashCode) * 8) && (i < bucket + 1 + 32 - 9); | ||
928 | i++) | 901 | i++) |
929 | { | 902 | { |
930 | if (GNUNET_CRYPTO_hash_get_bit_rtl (target, i) != | 903 | if (GNUNET_CRYPTO_hash_get_bit_rtl (target, i) != |
931 | GNUNET_CRYPTO_hash_get_bit_rtl (have, i)) | 904 | GNUNET_CRYPTO_hash_get_bit_rtl (have, i)) |
932 | lsb |= (1 << (bucket + 32 - 9 - i)); /* first bit set will be 10, | 905 | lsb |= (1LLU << (bucket + 64 - i)); /* first bit set will be 1, |
933 | * last bit set will be 31 -- if | 906 | * last bit set will be 63 -- if |
934 | * i does not reach 512 first... */ | 907 | * i does not reach 512 first... */ |
935 | } | 908 | } |
936 | return msb | lsb; | 909 | return lsb; |
937 | } | 910 | } |
938 | 911 | ||
939 | 912 | ||
@@ -1013,33 +986,42 @@ select_peer (const struct GNUNET_HashCode *key, | |||
1013 | unsigned int count; | 986 | unsigned int count; |
1014 | unsigned int selected; | 987 | unsigned int selected; |
1015 | struct PeerInfo *pos; | 988 | struct PeerInfo *pos; |
1016 | unsigned int dist; | ||
1017 | unsigned int smallest_distance; | ||
1018 | struct PeerInfo *chosen; | 989 | struct PeerInfo *chosen; |
1019 | 990 | ||
1020 | if (hops >= GDS_NSE_get ()) | 991 | if (hops >= GDS_NSE_get ()) |
1021 | { | 992 | { |
1022 | /* greedy selection (closest peer that is not in bloomfilter) */ | 993 | /* greedy selection (closest peer that is not in bloomfilter) */ |
1023 | smallest_distance = UINT_MAX; | 994 | unsigned int best_bucket = 0; |
995 | uint64_t best_in_bucket = UINT64_MAX; | ||
996 | |||
1024 | chosen = NULL; | 997 | chosen = NULL; |
1025 | for (bc = 0; bc <= closest_bucket; bc++) | 998 | for (bc = 0; bc <= closest_bucket; bc++) |
1026 | { | 999 | { |
1027 | pos = k_buckets[bc].head; | 1000 | pos = k_buckets[bc].head; |
1028 | count = 0; | 1001 | count = 0; |
1029 | while ((pos != NULL) && (count < bucket_size)) | 1002 | while ( (pos != NULL) && |
1003 | (count < bucket_size) ) | ||
1030 | { | 1004 | { |
1031 | if ((NULL == bloom) || | 1005 | unsigned int bucket; |
1032 | (GNUNET_NO == | 1006 | uint64_t dist; |
1033 | GNUNET_CONTAINER_bloomfilter_test (bloom, | 1007 | |
1034 | &pos->phash))) | 1008 | bucket = GNUNET_CRYPTO_hash_matching_bits (key, |
1009 | &pos->phash); | ||
1010 | dist = get_distance (key, | ||
1011 | &pos->phash, | ||
1012 | bucket); | ||
1013 | if (bucket < best_bucket) | ||
1014 | continue; | ||
1015 | if (dist > best_in_bucket) | ||
1016 | continue; | ||
1017 | best_bucket = bucket; | ||
1018 | best_in_bucket = dist; | ||
1019 | if ( (NULL == bloom) || | ||
1020 | (GNUNET_NO == | ||
1021 | GNUNET_CONTAINER_bloomfilter_test (bloom, | ||
1022 | &pos->phash)) ) | ||
1035 | { | 1023 | { |
1036 | dist = get_distance (key, | 1024 | chosen = pos; |
1037 | &pos->phash); | ||
1038 | if (dist < smallest_distance) | ||
1039 | { | ||
1040 | chosen = pos; | ||
1041 | smallest_distance = dist; | ||
1042 | } | ||
1043 | } | 1025 | } |
1044 | else | 1026 | else |
1045 | { | 1027 | { |
@@ -1052,13 +1034,7 @@ select_peer (const struct GNUNET_HashCode *key, | |||
1052 | "# Peers excluded from routing due to Bloomfilter"), | 1034 | "# Peers excluded from routing due to Bloomfilter"), |
1053 | 1, | 1035 | 1, |
1054 | GNUNET_NO); | 1036 | GNUNET_NO); |
1055 | dist = get_distance (key, | 1037 | chosen = NULL; |
1056 | &pos->phash); | ||
1057 | if (dist < smallest_distance) | ||
1058 | { | ||
1059 | chosen = NULL; | ||
1060 | smallest_distance = dist; | ||
1061 | } | ||
1062 | } | 1038 | } |
1063 | count++; | 1039 | count++; |
1064 | pos = pos->next; | 1040 | pos = pos->next; |