utils.c getopt.c getopt1.c list.c splay_tree.c dropin.c fake-getaddrinfo.c fake-getnameinfo.c \
buffer.c conf.c connection.c control.c edge.c graph.c logger.c meta.c net.c net_packet.c net_setup.c \
net_socket.c netutl.c node.c process.c protocol.c protocol_auth.c protocol_edge.c protocol_misc.c \
- protocol_key.c protocol_subnet.c route.c sptps.c subnet.c tincd.c \
+ protocol_key.c protocol_subnet.c route.c sptps.c subnet.c subnet_parse.c tincd.c \
dummy_device.c raw_socket_device.c multicast_device.c
if UML
/*
netutl.c -- some supporting network utility code
Copyright (C) 1998-2005 Ivo Timmermans
- 2000-2011 Guus Sliepen <guus@tinc-vpn.org>
+ 2000-2012 Guus Sliepen <guus@tinc-vpn.org>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
sa->in.sin_family = AF_INET;
}
}
-
-/* Subnet mask handling */
-
-int maskcmp(const void *va, const void *vb, int masklen) {
- int i, m, result;
- const char *a = va;
- const char *b = vb;
-
- for(m = masklen, i = 0; m >= 8; m -= 8, i++) {
- result = a[i] - b[i];
- if(result)
- return result;
- }
-
- if(m)
- return (a[i] & (0x100 - (1 << (8 - m)))) -
- (b[i] & (0x100 - (1 << (8 - m))));
-
- return 0;
-}
-
-void mask(void *va, int masklen, int len) {
- int i;
- char *a = va;
-
- i = masklen / 8;
- masklen %= 8;
-
- if(masklen)
- a[i++] &= (0x100 - (1 << (8 - masklen)));
-
- for(; i < len; i++)
- a[i] = 0;
-}
-
-void maskcpy(void *va, const void *vb, int masklen, int len) {
- int i, m;
- char *a = va;
- const char *b = vb;
-
- for(m = masklen, i = 0; m >= 8; m -= 8, i++)
- a[i] = b[i];
-
- if(m) {
- a[i] = b[i] & (0x100 - (1 << (8 - m)));
- i++;
- }
-
- for(; i < len; i++)
- a[i] = 0;
-}
-
-bool maskcheck(const void *va, int masklen, int len) {
- int i;
- const char *a = va;
-
- i = masklen / 8;
- masklen %= 8;
-
- if(masklen && a[i++] & (0xff >> masklen))
- return false;
-
- for(; i < len; i++)
- if(a[i] != 0)
- return false;
-
- return true;
-}
/*
netutl.h -- header file for netutl.c
Copyright (C) 1998-2005 Ivo Timmermans
- 2000-2009 Guus Sliepen <guus@tinc-vpn.org>
+ 2000-2012 Guus Sliepen <guus@tinc-vpn.org>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
extern void sockaddrunmap(sockaddr_t *);
extern void sockaddrfree(sockaddr_t *);
extern void sockaddrcpy(sockaddr_t *, const sockaddr_t *);
-extern int maskcmp(const void *, const void *, int);
-extern void maskcpy(void *, const void *, int, int);
-extern void mask(void *, int, int);
-extern bool maskcheck(const void *, int, int);
#endif /* __TINC_NETUTL_H__ */
/*
subnet.c -- handle subnet lookups and lists
- Copyright (C) 2000-2010 Guus Sliepen <guus@tinc-vpn.org>,
+ Copyright (C) 2000-2012 Guus Sliepen <guus@tinc-vpn.org>,
2000-2005 Ivo Timmermans
This program is free software; you can redistribute it and/or modify
cache_mac_valid[0] = cache_mac_valid[1] = false;
}
-/* Subnet comparison */
-
-static int subnet_compare_mac(const subnet_t *a, const subnet_t *b) {
- int result;
-
- result = memcmp(&a->net.mac.address, &b->net.mac.address, sizeof a->net.mac.address);
-
- if(result)
- return result;
-
- result = a->weight - b->weight;
-
- if(result || !a->owner || !b->owner)
- return result;
-
- return strcmp(a->owner->name, b->owner->name);
-}
-
-static int subnet_compare_ipv4(const subnet_t *a, const subnet_t *b) {
- int result;
-
- result = b->net.ipv4.prefixlength - a->net.ipv4.prefixlength;
-
- if(result)
- return result;
-
- result = memcmp(&a->net.ipv4.address, &b->net.ipv4.address, sizeof(ipv4_t));
-
- if(result)
- return result;
-
- result = a->weight - b->weight;
-
- if(result || !a->owner || !b->owner)
- return result;
-
- return strcmp(a->owner->name, b->owner->name);
-}
-
-static int subnet_compare_ipv6(const subnet_t *a, const subnet_t *b) {
- int result;
-
- result = b->net.ipv6.prefixlength - a->net.ipv6.prefixlength;
-
- if(result)
- return result;
-
- result = memcmp(&a->net.ipv6.address, &b->net.ipv6.address, sizeof(ipv6_t));
-
- if(result)
- return result;
-
- result = a->weight - b->weight;
-
- if(result || !a->owner || !b->owner)
- return result;
-
- return strcmp(a->owner->name, b->owner->name);
-}
-
-int subnet_compare(const subnet_t *a, const subnet_t *b) {
- int result;
-
- result = a->type - b->type;
-
- if(result)
- return result;
-
- switch (a->type) {
- case SUBNET_MAC:
- return subnet_compare_mac(a, b);
- case SUBNET_IPV4:
- return subnet_compare_ipv4(a, b);
- case SUBNET_IPV6:
- return subnet_compare_ipv6(a, b);
- default:
- logger(DEBUG_ALWAYS, LOG_ERR, "subnet_compare() was called with unknown subnet type %d, exitting!",
- a->type);
- exit(0);
- }
-
- return 0;
-}
-
/* Initialising trees */
void init_subnets(void) {
subnet_cache_flush();
}
-/* Ascii representation of subnets */
-
-bool str2net(subnet_t *subnet, const char *subnetstr) {
- int i, l;
- uint16_t x[8];
- int weight = 10;
-
- if(sscanf(subnetstr, "%hu.%hu.%hu.%hu/%d#%d",
- &x[0], &x[1], &x[2], &x[3], &l, &weight) >= 5) {
- if(l < 0 || l > 32)
- return false;
-
- subnet->type = SUBNET_IPV4;
- subnet->net.ipv4.prefixlength = l;
- subnet->weight = weight;
-
- for(i = 0; i < 4; i++) {
- if(x[i] > 255)
- return false;
- subnet->net.ipv4.address.x[i] = x[i];
- }
-
- return true;
- }
-
- if(sscanf(subnetstr, "%hx:%hx:%hx:%hx:%hx:%hx:%hx:%hx/%d#%d",
- &x[0], &x[1], &x[2], &x[3], &x[4], &x[5], &x[6], &x[7],
- &l, &weight) >= 9) {
- if(l < 0 || l > 128)
- return false;
-
- subnet->type = SUBNET_IPV6;
- subnet->net.ipv6.prefixlength = l;
- subnet->weight = weight;
-
- for(i = 0; i < 8; i++)
- subnet->net.ipv6.address.x[i] = htons(x[i]);
-
- return true;
- }
-
- if(sscanf(subnetstr, "%hu.%hu.%hu.%hu#%d", &x[0], &x[1], &x[2], &x[3], &weight) >= 4) {
- subnet->type = SUBNET_IPV4;
- subnet->net.ipv4.prefixlength = 32;
- subnet->weight = weight;
-
- for(i = 0; i < 4; i++) {
- if(x[i] > 255)
- return false;
- subnet->net.ipv4.address.x[i] = x[i];
- }
-
- return true;
- }
-
- if(sscanf(subnetstr, "%hx:%hx:%hx:%hx:%hx:%hx:%hx:%hx#%d",
- &x[0], &x[1], &x[2], &x[3], &x[4], &x[5], &x[6], &x[7], &weight) >= 8) {
- subnet->type = SUBNET_IPV6;
- subnet->net.ipv6.prefixlength = 128;
- subnet->weight = weight;
-
- for(i = 0; i < 8; i++)
- subnet->net.ipv6.address.x[i] = htons(x[i]);
-
- return true;
- }
-
- if(sscanf(subnetstr, "%hx:%hx:%hx:%hx:%hx:%hx#%d",
- &x[0], &x[1], &x[2], &x[3], &x[4], &x[5], &weight) >= 6) {
- subnet->type = SUBNET_MAC;
- subnet->weight = weight;
-
- for(i = 0; i < 6; i++)
- subnet->net.mac.address.x[i] = x[i];
-
- return true;
- }
-
- // IPv6 short form
- if(strstr(subnetstr, "::")) {
- const char *p;
- char *q;
- int colons = 0;
-
- // Count number of colons
- for(p = subnetstr; *p; p++)
- if(*p == ':')
- colons++;
-
- if(colons > 7)
- return false;
-
- // Scan numbers before the double colon
- p = subnetstr;
- for(i = 0; i < colons; i++) {
- if(*p == ':')
- break;
- x[i] = strtoul(p, &q, 0x10);
- if(!q || p == q || *q != ':')
- return false;
- p = ++q;
- }
-
- p++;
- colons -= i;
- if(!i) {
- p++;
- colons--;
- }
-
- if(!*p || *p == '/' || *p == '#')
- colons--;
-
- // Fill in the blanks
- for(; i < 8 - colons; i++)
- x[i] = 0;
-
- // Scan the remaining numbers
- for(; i < 8; i++) {
- x[i] = strtoul(p, &q, 0x10);
- if(!q || p == q)
- return false;
- if(i == 7) {
- p = q;
- break;
- }
- if(*q != ':')
- return false;
- p = ++q;
- }
-
- l = 128;
- if(*p == '/')
- sscanf(p, "/%d#%d", &l, &weight);
- else if(*p == '#')
- sscanf(p, "#%d", &weight);
-
- if(l < 0 || l > 128)
- return false;
-
- subnet->type = SUBNET_IPV6;
- subnet->net.ipv6.prefixlength = l;
- subnet->weight = weight;
-
- for(i = 0; i < 8; i++)
- subnet->net.ipv6.address.x[i] = htons(x[i]);
-
- return true;
- }
-
- return false;
-}
-
-bool net2str(char *netstr, int len, const subnet_t *subnet) {
- if(!netstr || !subnet) {
- logger(DEBUG_ALWAYS, LOG_ERR, "net2str() was called with netstr=%p, subnet=%p!", netstr, subnet);
- return false;
- }
-
- switch (subnet->type) {
- case SUBNET_MAC:
- snprintf(netstr, len, "%hx:%hx:%hx:%hx:%hx:%hx#%d",
- subnet->net.mac.address.x[0],
- subnet->net.mac.address.x[1],
- subnet->net.mac.address.x[2],
- subnet->net.mac.address.x[3],
- subnet->net.mac.address.x[4],
- subnet->net.mac.address.x[5],
- subnet->weight);
- break;
-
- case SUBNET_IPV4:
- snprintf(netstr, len, "%hu.%hu.%hu.%hu/%d#%d",
- subnet->net.ipv4.address.x[0],
- subnet->net.ipv4.address.x[1],
- subnet->net.ipv4.address.x[2],
- subnet->net.ipv4.address.x[3],
- subnet->net.ipv4.prefixlength,
- subnet->weight);
- break;
-
- case SUBNET_IPV6:
- snprintf(netstr, len, "%hx:%hx:%hx:%hx:%hx:%hx:%hx:%hx/%d#%d",
- ntohs(subnet->net.ipv6.address.x[0]),
- ntohs(subnet->net.ipv6.address.x[1]),
- ntohs(subnet->net.ipv6.address.x[2]),
- ntohs(subnet->net.ipv6.address.x[3]),
- ntohs(subnet->net.ipv6.address.x[4]),
- ntohs(subnet->net.ipv6.address.x[5]),
- ntohs(subnet->net.ipv6.address.x[6]),
- ntohs(subnet->net.ipv6.address.x[7]),
- subnet->net.ipv6.prefixlength,
- subnet->weight);
- break;
-
- default:
- logger(DEBUG_ALWAYS, LOG_ERR,
- "net2str() was called with unknown subnet type %d, exiting!",
- subnet->type);
- exit(0);
- }
-
- return true;
-}
-
/* Subnet lookup routines */
subnet_t *lookup_subnet(const node_t *owner, const subnet_t *subnet) {
extern void subnet_add(struct node_t *, subnet_t *);
extern void subnet_del(struct node_t *, subnet_t *);
extern void subnet_update(struct node_t *, subnet_t *, bool);
+extern int maskcmp(const void *, const void *, int);
+extern void maskcpy(void *, const void *, int, int);
+extern void mask(void *, int, int);
+extern bool maskcheck(const void *, int, int);
extern bool net2str(char *, int, const subnet_t *);
extern bool str2net(subnet_t *, const char *);
extern subnet_t *lookup_subnet(const struct node_t *, const subnet_t *);
--- /dev/null
+/*
+ subnet_parse.c -- handle subnet parsing
+ Copyright (C) 2000-2012 Guus Sliepen <guus@tinc-vpn.org>,
+ 2000-2005 Ivo Timmermans
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License along
+ with this program; if not, write to the Free Software Foundation, Inc.,
+ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+*/
+
+#include "system.h"
+
+#include "logger.h"
+#include "net.h"
+#include "netutl.h"
+#include "subnet.h"
+#include "utils.h"
+#include "xalloc.h"
+
+/* Subnet mask handling */
+
+int maskcmp(const void *va, const void *vb, int masklen) {
+ int i, m, result;
+ const char *a = va;
+ const char *b = vb;
+
+ for(m = masklen, i = 0; m >= 8; m -= 8, i++) {
+ result = a[i] - b[i];
+ if(result)
+ return result;
+ }
+
+ if(m)
+ return (a[i] & (0x100 - (1 << (8 - m)))) -
+ (b[i] & (0x100 - (1 << (8 - m))));
+
+ return 0;
+}
+
+void mask(void *va, int masklen, int len) {
+ int i;
+ char *a = va;
+
+ i = masklen / 8;
+ masklen %= 8;
+
+ if(masklen)
+ a[i++] &= (0x100 - (1 << (8 - masklen)));
+
+ for(; i < len; i++)
+ a[i] = 0;
+}
+
+void maskcpy(void *va, const void *vb, int masklen, int len) {
+ int i, m;
+ char *a = va;
+ const char *b = vb;
+
+ for(m = masklen, i = 0; m >= 8; m -= 8, i++)
+ a[i] = b[i];
+
+ if(m) {
+ a[i] = b[i] & (0x100 - (1 << (8 - m)));
+ i++;
+ }
+
+ for(; i < len; i++)
+ a[i] = 0;
+}
+
+bool maskcheck(const void *va, int masklen, int len) {
+ int i;
+ const char *a = va;
+
+ i = masklen / 8;
+ masklen %= 8;
+
+ if(masklen && a[i++] & (0xff >> masklen))
+ return false;
+
+ for(; i < len; i++)
+ if(a[i] != 0)
+ return false;
+
+ return true;
+}
+
+/* Subnet comparison */
+
+static int subnet_compare_mac(const subnet_t *a, const subnet_t *b) {
+ int result;
+
+ result = memcmp(&a->net.mac.address, &b->net.mac.address, sizeof a->net.mac.address);
+
+ if(result)
+ return result;
+
+ result = a->weight - b->weight;
+
+ if(result || !a->owner || !b->owner)
+ return result;
+
+ return strcmp(a->owner->name, b->owner->name);
+}
+
+static int subnet_compare_ipv4(const subnet_t *a, const subnet_t *b) {
+ int result;
+
+ result = b->net.ipv4.prefixlength - a->net.ipv4.prefixlength;
+
+ if(result)
+ return result;
+
+ result = memcmp(&a->net.ipv4.address, &b->net.ipv4.address, sizeof(ipv4_t));
+
+ if(result)
+ return result;
+
+ result = a->weight - b->weight;
+
+ if(result || !a->owner || !b->owner)
+ return result;
+
+ return strcmp(a->owner->name, b->owner->name);
+}
+
+static int subnet_compare_ipv6(const subnet_t *a, const subnet_t *b) {
+ int result;
+
+ result = b->net.ipv6.prefixlength - a->net.ipv6.prefixlength;
+
+ if(result)
+ return result;
+
+ result = memcmp(&a->net.ipv6.address, &b->net.ipv6.address, sizeof(ipv6_t));
+
+ if(result)
+ return result;
+
+ result = a->weight - b->weight;
+
+ if(result || !a->owner || !b->owner)
+ return result;
+
+ return strcmp(a->owner->name, b->owner->name);
+}
+
+int subnet_compare(const subnet_t *a, const subnet_t *b) {
+ int result;
+
+ result = a->type - b->type;
+
+ if(result)
+ return result;
+
+ switch (a->type) {
+ case SUBNET_MAC:
+ return subnet_compare_mac(a, b);
+ case SUBNET_IPV4:
+ return subnet_compare_ipv4(a, b);
+ case SUBNET_IPV6:
+ return subnet_compare_ipv6(a, b);
+ default:
+ logger(DEBUG_ALWAYS, LOG_ERR, "subnet_compare() was called with unknown subnet type %d, exitting!", a->type);
+ exit(1);
+ }
+
+ return 0;
+}
+
+/* Ascii representation of subnets */
+
+bool str2net(subnet_t *subnet, const char *subnetstr) {
+ int i, l;
+ uint16_t x[8];
+ int weight = 10;
+
+ if(sscanf(subnetstr, "%hu.%hu.%hu.%hu/%d#%d",
+ &x[0], &x[1], &x[2], &x[3], &l, &weight) >= 5) {
+ if(l < 0 || l > 32)
+ return false;
+
+ subnet->type = SUBNET_IPV4;
+ subnet->net.ipv4.prefixlength = l;
+ subnet->weight = weight;
+
+ for(i = 0; i < 4; i++) {
+ if(x[i] > 255)
+ return false;
+ subnet->net.ipv4.address.x[i] = x[i];
+ }
+
+ return true;
+ }
+
+ if(sscanf(subnetstr, "%hx:%hx:%hx:%hx:%hx:%hx:%hx:%hx/%d#%d",
+ &x[0], &x[1], &x[2], &x[3], &x[4], &x[5], &x[6], &x[7],
+ &l, &weight) >= 9) {
+ if(l < 0 || l > 128)
+ return false;
+
+ subnet->type = SUBNET_IPV6;
+ subnet->net.ipv6.prefixlength = l;
+ subnet->weight = weight;
+
+ for(i = 0; i < 8; i++)
+ subnet->net.ipv6.address.x[i] = htons(x[i]);
+
+ return true;
+ }
+
+ if(sscanf(subnetstr, "%hu.%hu.%hu.%hu#%d", &x[0], &x[1], &x[2], &x[3], &weight) >= 4) {
+ subnet->type = SUBNET_IPV4;
+ subnet->net.ipv4.prefixlength = 32;
+ subnet->weight = weight;
+
+ for(i = 0; i < 4; i++) {
+ if(x[i] > 255)
+ return false;
+ subnet->net.ipv4.address.x[i] = x[i];
+ }
+
+ return true;
+ }
+
+ if(sscanf(subnetstr, "%hx:%hx:%hx:%hx:%hx:%hx:%hx:%hx#%d",
+ &x[0], &x[1], &x[2], &x[3], &x[4], &x[5], &x[6], &x[7], &weight) >= 8) {
+ subnet->type = SUBNET_IPV6;
+ subnet->net.ipv6.prefixlength = 128;
+ subnet->weight = weight;
+
+ for(i = 0; i < 8; i++)
+ subnet->net.ipv6.address.x[i] = htons(x[i]);
+
+ return true;
+ }
+
+ if(sscanf(subnetstr, "%hx:%hx:%hx:%hx:%hx:%hx#%d",
+ &x[0], &x[1], &x[2], &x[3], &x[4], &x[5], &weight) >= 6) {
+ subnet->type = SUBNET_MAC;
+ subnet->weight = weight;
+
+ for(i = 0; i < 6; i++)
+ subnet->net.mac.address.x[i] = x[i];
+
+ return true;
+ }
+
+ // IPv6 short form
+ if(strstr(subnetstr, "::")) {
+ const char *p;
+ char *q;
+ int colons = 0;
+
+ // Count number of colons
+ for(p = subnetstr; *p; p++)
+ if(*p == ':')
+ colons++;
+
+ if(colons > 7)
+ return false;
+
+ // Scan numbers before the double colon
+ p = subnetstr;
+ for(i = 0; i < colons; i++) {
+ if(*p == ':')
+ break;
+ x[i] = strtoul(p, &q, 0x10);
+ if(!q || p == q || *q != ':')
+ return false;
+ p = ++q;
+ }
+
+ p++;
+ colons -= i;
+ if(!i) {
+ p++;
+ colons--;
+ }
+
+ if(!*p || *p == '/' || *p == '#')
+ colons--;
+
+ // Fill in the blanks
+ for(; i < 8 - colons; i++)
+ x[i] = 0;
+
+ // Scan the remaining numbers
+ for(; i < 8; i++) {
+ x[i] = strtoul(p, &q, 0x10);
+ if(!q || p == q)
+ return false;
+ if(i == 7) {
+ p = q;
+ break;
+ }
+ if(*q != ':')
+ return false;
+ p = ++q;
+ }
+
+ l = 128;
+ if(*p == '/')
+ sscanf(p, "/%d#%d", &l, &weight);
+ else if(*p == '#')
+ sscanf(p, "#%d", &weight);
+
+ if(l < 0 || l > 128)
+ return false;
+
+ subnet->type = SUBNET_IPV6;
+ subnet->net.ipv6.prefixlength = l;
+ subnet->weight = weight;
+
+ for(i = 0; i < 8; i++)
+ subnet->net.ipv6.address.x[i] = htons(x[i]);
+
+ return true;
+ }
+
+ return false;
+}
+
+bool net2str(char *netstr, int len, const subnet_t *subnet) {
+ if(!netstr || !subnet) {
+ logger(DEBUG_ALWAYS, LOG_ERR, "net2str() was called with netstr=%p, subnet=%p!", netstr, subnet);
+ return false;
+ }
+
+ switch (subnet->type) {
+ case SUBNET_MAC:
+ snprintf(netstr, len, "%hx:%hx:%hx:%hx:%hx:%hx#%d",
+ subnet->net.mac.address.x[0],
+ subnet->net.mac.address.x[1],
+ subnet->net.mac.address.x[2],
+ subnet->net.mac.address.x[3],
+ subnet->net.mac.address.x[4],
+ subnet->net.mac.address.x[5],
+ subnet->weight);
+ break;
+
+ case SUBNET_IPV4:
+ snprintf(netstr, len, "%hu.%hu.%hu.%hu/%d#%d",
+ subnet->net.ipv4.address.x[0],
+ subnet->net.ipv4.address.x[1],
+ subnet->net.ipv4.address.x[2],
+ subnet->net.ipv4.address.x[3],
+ subnet->net.ipv4.prefixlength,
+ subnet->weight);
+ break;
+
+ case SUBNET_IPV6:
+ snprintf(netstr, len, "%hx:%hx:%hx:%hx:%hx:%hx:%hx:%hx/%d#%d",
+ ntohs(subnet->net.ipv6.address.x[0]),
+ ntohs(subnet->net.ipv6.address.x[1]),
+ ntohs(subnet->net.ipv6.address.x[2]),
+ ntohs(subnet->net.ipv6.address.x[3]),
+ ntohs(subnet->net.ipv6.address.x[4]),
+ ntohs(subnet->net.ipv6.address.x[5]),
+ ntohs(subnet->net.ipv6.address.x[6]),
+ ntohs(subnet->net.ipv6.address.x[7]),
+ subnet->net.ipv6.prefixlength,
+ subnet->weight);
+ break;
+
+ default:
+ logger(DEBUG_ALWAYS, LOG_ERR, "net2str() was called with unknown subnet type %d, exiting!", subnet->type);
+ exit(1);
+ }
+
+ return true;
+}
projects / oweals / tinc.git / commitdiff