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1.1 ! root 1: #include <sys/types.h> ! 2: #include <sys/stat.h> ! 3: #include <sys/inet/in.h> ! 4: #include <stdio.h> ! 5: #include <ctype.h> ! 6: #include "config.h" ! 7: ! 8: struct namefile { ! 9: char *name; ! 10: char *data; ! 11: long time; ! 12: }; ! 13: ! 14: static struct namefile files[] = { ! 15: { "/usr/ipc/lib/inaddr.local", 0, 0 }, ! 16: { "/usr/ipc/lib/inaddr", 0, 0 }, ! 17: { "/usr/inet/lib/hosts", 0, 0 }, ! 18: { "/usr/inet/lib/networks", 0, 0 }, ! 19: }; ! 20: #define NFIL (sizeof(files)/sizeof(struct namefile)) ! 21: ! 22: struct trbuf { ! 23: struct trbuf *next; ! 24: in_addr addr; ! 25: char *name; ! 26: }; ! 27: ! 28: #define TLBSIZE 1023 ! 29: static struct trbuf tlb[TLBSIZE]; ! 30: ! 31: /* imported */ ! 32: extern char *in_getw(); ! 33: extern char *malloc(); ! 34: ! 35: /* exported */ ! 36: int in_host_dostat=1; ! 37: ! 38: static int ! 39: getfile(i) ! 40: int i; ! 41: { ! 42: int fd; ! 43: struct stat sbuf; ! 44: unsigned int x; ! 45: ! 46: if (in_host_dostat) ! 47: stat(files[i].name, &sbuf); ! 48: else ! 49: sbuf.st_mtime = files[i].time; ! 50: if (files[i].data == 0 || sbuf.st_mtime!=files[i].time) { ! 51: if (!in_host_dostat) ! 52: stat(files[i].name, &sbuf); ! 53: fd = open(files[i].name, 0); ! 54: if (fd<0) ! 55: return -1; ! 56: if (files[i].data!=0) ! 57: free(files[i].data); ! 58: x = sbuf.st_size; ! 59: files[i].data = malloc(x+2); ! 60: if (files[i].data==0) { ! 61: close(fd); ! 62: return -1; ! 63: } ! 64: if (read(fd, files[i].data, x)!=x){ ! 65: close(fd); ! 66: return -1; ! 67: } ! 68: close(fd); ! 69: files[i].data[sbuf.st_size] = '\n'; ! 70: files[i].data[sbuf.st_size+1] = 0; ! 71: files[i].time = sbuf.st_mtime; ! 72: for (i=0; i<TLBSIZE; i++) ! 73: tlb[i].addr = 0; ! 74: } ! 75: return 0; ! 76: } ! 77: ! 78: #define SKIPWHITE while(*p==' ' || *p=='\t') p++ ! 79: #define GETBLACK xp = b;\ ! 80: while(*p!=' ' && *p!='\t' && *p!='\n' && *p!='\0')\ ! 81: *xp++ = *p++;\ ! 82: *xp = '\0' ! 83: ! 84: char * ! 85: in_host(addr) ! 86: in_addr addr; ! 87: { ! 88: register char *p, *xp, *op; ! 89: unsigned char *yp; ! 90: static char b[32]; ! 91: int f; ! 92: in_addr x, in_netof(), in_aton(); ! 93: ! 94: if (addr==0) ! 95: return "*"; ! 96: for(f=0; f<NFIL; f++){ ! 97: if (getfile(f) < 0) { ! 98: continue; ! 99: } else if (addr == tlb[addr%TLBSIZE].addr) { ! 100: p = tlb[addr%TLBSIZE].name; ! 101: GETBLACK; ! 102: return(b); ! 103: } else for (p = files[f].data; *p; p++){ ! 104: /* get number */ ! 105: SKIPWHITE; ! 106: GETBLACK; ! 107: x = in_aton(b); ! 108: SKIPWHITE; ! 109: if (x != 0 && *p != '\n') { ! 110: /* get name */ ! 111: op = p; ! 112: GETBLACK; ! 113: ! 114: /* see if this is the one */ ! 115: if (x==addr){ ! 116: int i; ! 117: ! 118: i = x%TLBSIZE; ! 119: tlb[i].addr = x; ! 120: tlb[i].name = op; ! 121: return b; ! 122: } ! 123: } ! 124: /* drop rest of line */ ! 125: while(*p!='\n'&&*p!='\0') p++; ! 126: } ! 127: } ! 128: yp = (unsigned char *) &addr; ! 129: sprintf(b, "%d.%d.%d.%d", yp[3], yp[2], yp[1], yp[0]); ! 130: return(b); ! 131: }
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