58 lines
1 KiB
C
58 lines
1 KiB
C
#include "common.h"
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#include <ndb.h>
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int
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rmtdns(char *net, char *path)
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{
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int fd, n, r;
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char *domain, *cp, buf[1024];
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if(net == 0 || path == 0)
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return 0;
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domain = strdup(path);
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cp = strchr(domain, '!');
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if(cp){
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*cp = 0;
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n = cp-domain;
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} else
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n = strlen(domain);
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if(*domain == '[' && domain[n-1] == ']'){ /* accept [nnn.nnn.nnn.nnn] */
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domain[n-1] = 0;
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r = strcmp(ipattr(domain+1), "ip");
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domain[n-1] = ']';
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} else
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r = strcmp(ipattr(domain), "ip"); /* accept nnn.nnn.nnn.nnn */
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if(r == 0){
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free(domain);
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return 0;
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}
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snprint(buf, sizeof(buf), "%s/dns", net);
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fd = open(buf, ORDWR); /* look up all others */
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if(fd < 0){ /* dns screw up - can't check */
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free(domain);
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return 0;
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}
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n = snprint(buf, sizeof(buf), "%s all", domain);
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free(domain);
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seek(fd, 0, 0);
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n = write(fd, buf, n);
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close(fd);
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if(n < 0){
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rerrstr(buf, sizeof(buf));
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if (strcmp(buf, "dns: name does not exist") == 0)
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return -1;
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}
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return 0;
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}
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/*
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void main(int, char *argv[]){ print("return = %d\n", rmtdns("/net.alt/tcp/109", argv[1]));}
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*/
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