*** empty log message ***

This commit is contained in:
hjp 2001-07-03 20:00:49 +00:00
parent 8f621c148a
commit 8a1a8732e0
2 changed files with 61 additions and 0 deletions

13
dns/GNUmakefile Normal file
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include GNUmakevars
include GNUmakerules
all: gethostbyname
install: $(BINDIR)/gethostbyname
clean:
rm -f *.bak *.o core gethostbyname
distclean: clean
rm -f *.d
-include *.d

48
dns/gethostbyname.c Normal file
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#include <netdb.h>
#include <stdio.h>
char *cmnd;
void usage(void) {
fprintf(stderr, "Usage: %s [hostname ...]\n", cmnd);
exit(1);
}
int main(int argc, char **argv) {
int i;
int rc = 0;
cmnd = argv[0];
if (argc < 2) {
usage();
}
for (i = 1; i < argc; i++) {
struct hostent *he = gethostbyname(argv[i]);
char **a;
if (!he) {
fprintf(stderr, "%s: cannot resolve %s: %s\n",
argv[0], argv[i], hstrerror(h_errno));
rc++;
continue;
}
printf("%s\n", argv[i]);
printf("\tCanonical: %s\n", he->h_name);
for (a = he->h_aliases; *a; a++) {
printf("\tAlias: %s\n", *a);
}
for (a = he->h_addr_list; *a; a++) {
int j;
printf("\tAddress: ");
for (j = 0; j < he->h_length; j++) {
printf("%s%d", j ? "." : "", (unsigned char)(*a)[j]);
}
printf("\n");
}
printf("\n");
}
return rc;
}