bbs/deb-mbse
Archived
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Added routing table

Browse Source
This commit is contained in:
Michiel Broek
2002-07-16 21:05:00 +00:00
parent 54f228d5b6
commit bad388e2ae
8 changed files with 226 additions and 33 deletions
Download Patch File Download Diff File Expand all files Collapse all files

172
mbfido/tracker.c
View File

@@ -44,6 +44,95 @@
extern char nodes_fil[81];
extern long nodes_pos;
/*
* Parse the mask from the routing table. If all 4d address parts
* are 0, then something is wrong. This cannot happen because the
* syntax is checked in mbsetup.
* Matched values return the actual value, the "All" masks return 65535.
*/
void ParseMask(char *, fidoaddr *);
void ParseMask(char *s, fidoaddr *addr)
{
char *buf, *str, *p;
int good = TRUE;
memset(addr, 0, sizeof(fidoaddr));
if (s == NULL)
return;
str = buf = xstrcpy(s);
addr->zone = 65535;
if ((p = strchr(str, ':'))) {
*(p++) = '\0';
if (strspn(str, "0123456789") == strlen(str))
addr->zone = atoi(str);
else
if (strcmp(str,"All"))
good = FALSE;
str = p;
}
addr->net = 65535;
if ((p = strchr(str, '/'))) {
*(p++) = '\0';
if (strspn(str, "0123456789") == strlen(str))
addr->net = atoi(str);
else
if (strcmp(str, "All"))
good = FALSE;
str = p;
}
if ((p=strchr(str, '.'))) {
*(p++) = '\0';
if (strspn(str, "0123456789") == strlen(str))
addr->node = atoi(str);
else
if (strcmp(str, "All") == 0)
addr->node = 65535;
else
good = FALSE;
str = p;
} else {
if (strspn(str, "0123456789") == strlen(str))
addr->node = atoi(str);
else
if (strcmp(str, "All") == 0)
addr->node = 65535;
else
good = FALSE;
str = NULL;
}
if (str) {
if (strspn(str, "0123456789") == strlen(str))
addr->point = atoi(str);
else
if (strcmp(str, "All") == 0)
addr->point = 65535;
else
good = FALSE;
}
if (buf)
free(buf);
if (!good) {
addr->zone = 0;
addr->net = 0;
addr->node = 0;
addr->point = 0;
}
return;
}
/*
* Netmail tracker. Return TRUE if we found a valid route.
* If we did find a route, it is returned in the route pointer.
@@ -177,11 +266,13 @@ int GetRoute(char *ftn, fidoaddr *res)
node *dnlent, *bnlent;
unsigned short myregion;
faddr *dest, *best, *maddr;
fidoaddr *fido;
fidoaddr *fido, mask;
int me_host = -1, me_hub = -1;
int i;
int i, match, last;
fidoaddr dir;
FILE *fil;
char *temp;
long ptr;
memset(res, 0, sizeof(fidoaddr));
dest = parsefnode(ftn);
@@ -194,6 +285,83 @@ int GetRoute(char *ftn, fidoaddr *res)
Syslog('r', "Get route for: %s", ascfnode(dest, 0xff));
Syslog('r', "Our best aka is: %s", ascfnode(best, 0xff));
/*
* Check routing table
*/
temp = calloc(PATH_MAX, sizeof(char));
sprintf(temp, "%s/etc/route.data", getenv("MBSE_ROOT"));
if ((fil = fopen(temp, "r")) != NULL) {
fread(&routehdr, sizeof(routehdr), 1, fil);
match = last = METRIC_MAX;
ptr = ftell(fil);
while (fread(&route, routehdr.recsize, 1, fil) == 1) {
if (route.Active) {
ParseMask(route.mask, &mask);
Syslog('r', "Table %s => %s", route.mask, aka2str(route.dest));
match = METRIC_MAX;
if (mask.zone) {
if ((mask.zone == 65535) || (mask.zone == dest->zone)) {
match = METRIC_ZONE;
if ((mask.net == 65535) || (mask.net == dest->net)) {
match = METRIC_NET;
if ((mask.node == 65535) || (mask.node == dest->node)) {
match = METRIC_NODE;
if ((mask.point == 65535) || (mask.point == dest->point))
match = METRIC_POINT;
}
}
}
if (match < last) {
Syslog('r', "Best util now");
last = match;
ptr = ftell(fil) - routehdr.recsize;
}
switch (match) {
case METRIC_MAX: Syslog('r', "Match MAX");
break;
case METRIC_ZONE: Syslog('r', "Match ZONE");
break;
case METRIC_NET: Syslog('r', "Match NET");
break;
case METRIC_NODE: Syslog('r', "Match NODE");
break;
case METRIC_POINT: Syslog('r', "Match POINT");
break;
}
} else {
Syslog('r', "Error in table");
}
}
}
if (last < METRIC_MAX) {
fseek(fil, ptr, SEEK_SET);
fread(&route, routehdr.recsize, 1, fil);
fclose(fil);
Syslog('r', "Route selected %s %d %s", route.mask, route.routetype, aka2str(route.dest));
/*
* Found a route record that matches. Return to caller with the result except
* when the result is RT_DEFAULT, which means fall down to the default router below.
* This is also true for routes that don't match at all.
*/
if (route.routetype == RT_ROUTE) {
Syslog('+', "R: %s Routing table: Route => %s", ascfnode(dest, 0xff), aka2str(route.dest));
memcpy(res, &route.dest, sizeof(fidoaddr));
return R_ROUTE;
}
if (route.routetype == RT_DIRECT) {
Syslog('+', "R: %s Routing table: Direct => %s", ascfnode(dest, 0xff), aka2str(route.dest));
memcpy(res, &route.dest, sizeof(fidoaddr));
return R_DIRECT;
}
} else {
fclose(fil);
}
}
free(temp);
/*
* Check if the destination is ourself.
*/