| | 1 | /* |
| | 2 | * $Source$ |
| | 3 | * $Author$ |
| | 4 | * $Header$ |
| | 5 | * |
| | 6 | * Copyright (C) 1987 by the Massachusetts Institute of Technology |
| | 7 | * For copying and distribution information, please see the file |
| | 8 | * <mit-copyright.h>. |
| | 9 | */ |
| | 10 | |
| | 11 | #ifndef lint |
| | 12 | static char *rcsid_fixhost_c = "$Header$"; |
| | 13 | #endif lint |
| | 14 | |
| | 15 | #include <mit-copyright.h> |
| | 16 | #include <sys/types.h> |
| | 17 | #include <sys/socket.h> |
| | 18 | #include <netinet/in.h> |
| | 19 | #include <arpa/nameser.h> |
| | 20 | #if defined(sun) || defined(AIX386) |
| | 21 | #include <resolv.h> |
| | 22 | #else |
| | 23 | #include <arpa/resolv.h> |
| | 24 | #endif |
| | 25 | #include <netdb.h> |
| | 26 | #include <stdio.h> |
| | 27 | #include <strings.h> |
| | 28 | #include <ctype.h> |
| | 29 | |
| | 30 | extern char *malloc(); |
| | 31 | extern char *realloc(); |
| | 32 | extern char *strsave(); |
| | 33 | |
| | 34 | /* |
| | 35 | * Canonicalize hostname: |
| | 36 | * if it is in double-quotes, then strip the quotes and return the name. |
| | 37 | * if it is in the namespace, call the nameserver to expand it |
| | 38 | * otherwise uppercase it and append the default domain (using an, er, |
| | 39 | * undocumented global of the nameserver). |
| | 40 | * |
| | 41 | * Assumes that host was allocated using malloc(); it may be freed or |
| | 42 | * realloc'ed, so the old pointer should not be considered valid. |
| | 43 | */ |
| | 44 | |
| | 45 | char * |
| | 46 | canonicalize_hostname(host) |
| | 47 | char *host; |
| | 48 | { |
| | 49 | register struct hostent *hp; |
| | 50 | int n_len; |
| | 51 | int has_dot = 0; |
| | 52 | char tbuf[BUFSIZ]; |
| | 53 | register char *cp; |
| | 54 | |
| | 55 | if (strlen(host) > 2 && host[0] == '"' && host[strlen(host)-1] == '"') { |
| | 56 | strcpy(tbuf, host+1); |
| | 57 | free(host); |
| | 58 | tbuf[strlen(tbuf)-1] = 0; |
| | 59 | return(strsave(tbuf)); |
| | 60 | } |
| | 61 | |
| | 62 | if (index(host, '*') || index(host, '?') || index(host, '[')) |
| | 63 | return(host); |
| | 64 | |
| | 65 | hp = gethostbyname(host); |
| | 66 | |
| | 67 | if (hp) { |
| | 68 | n_len = strlen(hp->h_name) + 1; |
| | 69 | host = realloc(host, (unsigned)n_len); |
| | 70 | |
| | 71 | (void) strcpy(host, hp->h_name); |
| | 72 | return host; |
| | 73 | } else { |
| | 74 | /* can't get name from nameserver; fix up the format a bit */ |
| | 75 | for (cp = host; *cp; cp++) { |
| | 76 | register int c; /* pcc doesn't like register char */ |
| | 77 | if (islower(c = *cp)) *cp = toupper(c); |
| | 78 | has_dot |= (c == '.'); |
| | 79 | } |
| | 80 | if (!has_dot) { |
| | 81 | (void) sprintf(tbuf, "%s.%s", host, _res.defdname); |
| | 82 | free(host); |
| | 83 | host = strsave(tbuf); |
| | 84 | } |
| | 85 | return host; |
| | 86 | } |
| | 87 | } |
andersk / moira.git / blame_incremental