running in its (new) test harness, DNS lookups are first passed to this program
instead of to the real resolver. (With a few exceptions - see the discussion in
the test suite's README file.) The program is also passed the name of the Exim
-spool directory; it expects to find its "zone files" in ../dnszones relative to
-that directory. Note that there is little checking in this program. The fake
+spool directory; it expects to find its "zone files" in dnszones relative to
+exim config_main_directory. Note that there is little checking in this program. The fake
zone files are assumed to be syntactically valid.
The zones that are handled are found by scanning the dnszones directory. A file
#include <string.h>
#include <netdb.h>
#include <errno.h>
+#include <signal.h>
#include <arpa/nameser.h>
#include <sys/types.h>
#include <sys/time.h>
{ US"A", ns_t_a },
{ US"NS", ns_t_ns },
{ US"CNAME", ns_t_cname },
-/* { US"SOA", ns_t_soa }, Not currently in use */
+ { US"SOA", ns_t_soa },
{ US"PTR", ns_t_ptr },
{ US"MX", ns_t_mx },
{ US"TXT", ns_t_txt },
return pk;
}
+uschar *
+longfield(uschar ** pp, uschar * pk)
+{
+unsigned long value = 0;
+uschar * p = *pp;
+
+while (isdigit(*p)) value = value*10 + *p++ - '0';
+while (isspace(*p)) p++;
+*pp = p;
+*pk++ = (value >> 24) & 255;
+*pk++ = (value >> 16) & 255;
+*pk++ = (value >> 8) & 255;
+*pk++ = value & 255;
+return pk;
+}
+
/*************************************************/
uschar *rdlptr;
uschar *p, *ep, *pp;
BOOL found_cname = FALSE;
- int i, plen, value;
+ int i, value;
int tvalue = typeptr->value;
int qtlen = qtypelen;
BOOL rr_sec = FALSE;
p = buffer;
for (;;)
- {
- if (Ustrncmp(p, US"DNSSEC ", 7) == 0) /* tagged as secure */
- {
- rr_sec = TRUE;
- p += 7;
- }
- else if (Ustrncmp(p, US"DELAY=", 6) == 0) /* delay beforee response */
- {
- for (p += 6; *p >= '0' && *p <= '9'; p++)
- delay = delay*10 + *p - '0';
- while (isspace(*p)) p++;
- }
- else
- break;
- }
+ {
+ if (Ustrncmp(p, US"DNSSEC ", 7) == 0) /* tagged as secure */
+ {
+ rr_sec = TRUE;
+ p += 7;
+ }
+ else if (Ustrncmp(p, US"DELAY=", 6) == 0) /* delay before response */
+ {
+ for (p += 6; *p >= '0' && *p <= '9'; p++) delay = delay*10 + *p - '0';
+ while (isspace(*p)) p++;
+ }
+ else
+ break;
+ }
if (!isspace(*p))
{
switch (tvalue)
{
- case ns_t_soa: /* Not currently used */
- break;
+ case ns_t_soa:
+ p = strtok(p, " ");
+ ep = p + strlen(p);
+ if (ep[-1] != '.') sprintf(CS ep, "%s.", zone);
+ pk = packname(p, pk); /* primary ns */
+ p = strtok(NULL, " ");
+ pk = packname(p , pk); /* responsible mailbox */
+ *(p += strlen(p)) = ' ';
+ while (isspace(*p)) p++;
+ pk = longfield(&p, pk); /* serial */
+ pk = longfield(&p, pk); /* refresh */
+ pk = longfield(&p, pk); /* retry */
+ pk = longfield(&p, pk); /* expire */
+ pk = longfield(&p, pk); /* minimum */
+ break;
case ns_t_a:
- for (i = 0; i < 4; i++)
- {
- value = 0;
- while (isdigit(*p)) value = value*10 + *p++ - '0';
- *pk++ = value;
- p++;
- }
- break;
+ for (i = 0; i < 4; i++)
+ {
+ value = 0;
+ while (isdigit(*p)) value = value*10 + *p++ - '0';
+ *pk++ = value;
+ p++;
+ }
+ break;
/* The only occurrence of a double colon is for ::1 */
case ns_t_aaaa:
- if (Ustrcmp(p, "::1") == 0)
- {
- memset(pk, 0, 15);
- pk += 15;
- *pk++ = 1;
- }
- else for (i = 0; i < 8; i++)
- {
- value = 0;
- while (isxdigit(*p))
- {
- value = value * 16 + toupper(*p) - (isdigit(*p)? '0' : '7');
- p++;
- }
- *pk++ = (value >> 8) & 255;
- *pk++ = value & 255;
- p++;
- }
- break;
+ if (Ustrcmp(p, "::1") == 0)
+ {
+ memset(pk, 0, 15);
+ pk += 15;
+ *pk++ = 1;
+ }
+ else for (i = 0; i < 8; i++)
+ {
+ value = 0;
+ while (isxdigit(*p))
+ {
+ value = value * 16 + toupper(*p) - (isdigit(*p)? '0' : '7');
+ p++;
+ }
+ *pk++ = (value >> 8) & 255;
+ *pk++ = value & 255;
+ p++;
+ }
+ break;
case ns_t_mx:
- pk = shortfield(&p, pk);
- if (ep[-1] != '.') sprintf(CS ep, "%s.", zone);
- pk = packname(p, pk);
- plen = Ustrlen(p);
- break;
+ pk = shortfield(&p, pk);
+ if (ep[-1] != '.') sprintf(CS ep, "%s.", zone);
+ pk = packname(p, pk);
+ break;
case ns_t_txt:
- pp = pk++;
- if (*p == '"') p++; /* Should always be the case */
- while (*p != 0 && *p != '"') *pk++ = *p++;
- *pp = pk - pp - 1;
- break;
+ pp = pk++;
+ if (*p == '"') p++; /* Should always be the case */
+ while (*p != 0 && *p != '"') *pk++ = *p++;
+ *pp = pk - pp - 1;
+ break;
case ns_t_tlsa:
- pk = bytefield(&p, pk); /* usage */
- pk = bytefield(&p, pk); /* selector */
- pk = bytefield(&p, pk); /* match type */
- while (isxdigit(*p))
+ pk = bytefield(&p, pk); /* usage */
+ pk = bytefield(&p, pk); /* selector */
+ pk = bytefield(&p, pk); /* match type */
+ while (isxdigit(*p))
{
value = toupper(*p) - (isdigit(*p) ? '0' : '7') << 4;
if (isxdigit(*++p))
*pk++ = value & 255;
}
- break;
+ break;
case ns_t_srv:
- for (i = 0; i < 3; i++)
- {
- value = 0;
- while (isdigit(*p)) value = value*10 + *p++ - '0';
- while (isspace(*p)) p++;
- *pk++ = (value >> 8) & 255;
- *pk++ = value & 255;
- }
+ for (i = 0; i < 3; i++)
+ {
+ value = 0;
+ while (isdigit(*p)) value = value*10 + *p++ - '0';
+ while (isspace(*p)) p++;
+ *pk++ = (value >> 8) & 255;
+ *pk++ = value & 255;
+ }
/* Fall through */
case ns_t_cname:
case ns_t_ns:
case ns_t_ptr:
- if (ep[-1] != '.') sprintf(CS ep, "%s.", zone);
- pk = packname(p, pk);
- plen = Ustrlen(p);
- break;
+ if (ep[-1] != '.') sprintf(CS ep, "%s.", zone);
+ pk = packname(p, pk);
+ break;
}
/* Fill in the length, and we are done with this RR */
uschar domain[256];
uschar buffer[256];
uschar qtype[12];
-uschar packet[512];
+uschar packet[2048 * 32 + 32];
uschar *pk = packet;
BOOL dnssec;
/* Find the zones */
-(void)sprintf(CS buffer, "%s/../dnszones", argv[1]);
+(void)sprintf(CS buffer, "%s/dnszones", argv[1]);
d = opendir(CCS buffer);
if (d == NULL)
qtypelen = Ustrlen(qtype);
for (p = qtype; *p != 0; p++) *p = toupper(*p);
-/* Find the domain, lower case it, check that it is in a zone that we handle,
+/* Find the domain, lower case it, deal with any specials,
+check that it is in a zone that we handle,
and set up the zone file name. The zone names in the table all start with a
dot. */
domain[domlen] = 0;
for (i = 0; i < domlen; i++) domain[i] = tolower(domain[i]);
+if (Ustrcmp(domain, "manyhome.test.ex") == 0 && Ustrcmp(qtype, "A") == 0)
+ {
+ uschar *pk = packet + 12;
+ uschar *rdlptr;
+ int i, j;
+
+ memset(packet, 0, 12);
+
+ for (i = 104; i <= 111; i++) for (j = 0; j <= 255; j++)
+ {
+ pk = packname(domain, pk);
+ *pk++ = (ns_t_a >> 8) & 255;
+ *pk++ = (ns_t_a) & 255;
+ *pk++ = 0;
+ *pk++ = 1; /* class = IN */
+ pk += 4; /* TTL field; don't care */
+ rdlptr = pk; /* remember rdlength field */
+ pk += 2;
+
+ *pk++ = 10; *pk++ = 250; *pk++ = i; *pk++ = j;
+
+ rdlptr[0] = ((pk - rdlptr - 2) >> 8) & 255;
+ rdlptr[1] = (pk - rdlptr - 2) & 255;
+ }
+
+ packet[6] = (2048 >> 8) & 255;
+ packet[7] = 2048 & 255;
+ packet[10] = 0;
+ packet[11] = 0;
+
+ (void)fwrite(packet, 1, pk - packet, stdout);
+ return 0;
+ }
+
+
if (Ustrchr(domain, '.') == NULL && qualify != NULL &&
Ustrcmp(domain, "dontqualify") != 0)
{
return PASS_ON;
}
-(void)sprintf(CS buffer, "%s/../dnszones/%s", argv[1], zonefile);
+(void)sprintf(CS buffer, "%s/dnszones/%s", argv[1], zonefile);
/* Initialize the start of the response packet. We don't have to fake up
everything, because we know that Exim will look only at the answer and
git://git.exim.org / exim.git / blobdiff