diff options
Diffstat (limited to 'eBones/krb/send_to_kdc.c')
| -rw-r--r-- | eBones/krb/send_to_kdc.c | 322 |
1 files changed, 0 insertions, 322 deletions
diff --git a/eBones/krb/send_to_kdc.c b/eBones/krb/send_to_kdc.c deleted file mode 100644 index a2a329a..0000000 --- a/eBones/krb/send_to_kdc.c +++ /dev/null @@ -1,322 +0,0 @@ -/* - * Copyright 1987, 1988 by the Massachusetts Institute of Technology. - * For copying and distribution information, please see the file - * <Copyright.MIT>. - * - * from: send_to_kdc.c,v 4.20 90/01/02 13:40:37 jtkohl Exp $ - * $Id: send_to_kdc.c,v 1.3 1995/07/18 16:39:42 mark Exp $ - */ - -#if 0 -#ifndef lint -static char rcsid_send_to_kdc_c[] = -"$Id: send_to_kdc.c,v 1.1 1994/03/21 17:35:39 piero Exp "; -#endif /* lint */ -#endif - -#include <krb.h> -#include <prot.h> - -#include <unistd.h> -#include <stdlib.h> -#include <stdio.h> -#include <errno.h> -#include <sys/time.h> -#include <sys/types.h> -#ifdef lint -#include <sys/uio.h> /* struct iovec to make lint happy */ -#endif /* lint */ -#include <sys/socket.h> -#include <netinet/in.h> -#include <arpa/inet.h> -#include <netdb.h> -#include <strings.h> - -#define S_AD_SZ sizeof(struct sockaddr_in) - -extern int errno; -extern int krb_debug; - -extern char *malloc(), *calloc(), *realloc(); - -int krb_udp_port = 0; - -/* CLIENT_KRB_TIMEOUT indicates the time to wait before - * retrying a server. It's defined in "krb.h". - */ -static struct timeval timeout = { CLIENT_KRB_TIMEOUT, 0}; -static char *prog = "send_to_kdc"; -static send_recv(); - -/* - * This file contains two routines, send_to_kdc() and send_recv(). - * send_recv() is a static routine used by send_to_kdc(). - */ - -/* - * send_to_kdc() sends a message to the Kerberos authentication - * server(s) in the given realm and returns the reply message. - * The "pkt" argument points to the message to be sent to Kerberos; - * the "rpkt" argument will be filled in with Kerberos' reply. - * The "realm" argument indicates the realm of the Kerberos server(s) - * to transact with. If the realm is null, the local realm is used. - * - * If more than one Kerberos server is known for a given realm, - * different servers will be queried until one of them replies. - * Several attempts (retries) are made for each server before - * giving up entirely. - * - * If an answer was received from a Kerberos host, KSUCCESS is - * returned. The following errors can be returned: - * - * SKDC_CANT - can't get local realm - * - can't find "kerberos" in /etc/services database - * - can't open socket - * - can't bind socket - * - all ports in use - * - couldn't find any Kerberos host - * - * SKDC_RETRY - couldn't get an answer from any Kerberos server, - * after several retries - */ - -int -send_to_kdc(pkt,rpkt,realm) - KTEXT pkt; - KTEXT rpkt; - char *realm; -{ - int i, f; - int no_host; /* was a kerberos host found? */ - int retry; - int n_hosts; - int retval; - struct sockaddr_in to; - struct hostent *host, *hostlist; - char *cp; - char krbhst[MAX_HSTNM]; - char lrealm[REALM_SZ]; - - /* - * If "realm" is non-null, use that, otherwise get the - * local realm. - */ - if (realm) - (void) strcpy(lrealm, realm); - else - if (krb_get_lrealm(lrealm,1)) { - if (krb_debug) - fprintf(stderr, "%s: can't get local realm\n", prog); - return(SKDC_CANT); - } - if (krb_debug) - printf("lrealm is %s\n", lrealm); - if (krb_udp_port == 0) { - register struct servent *sp; - if ((sp = getservbyname("kerberos","udp")) == 0) { - if (krb_debug) - fprintf(stderr, "%s: Can't get kerberos/udp service\n", - prog); - return(SKDC_CANT); - } - krb_udp_port = sp->s_port; - if (krb_debug) - printf("krb_udp_port is %d\n", krb_udp_port); - } - bzero((char *)&to, S_AD_SZ); - hostlist = (struct hostent *) malloc(sizeof(struct hostent)); - if (!hostlist) - return (/*errno */SKDC_CANT); - if ((f = socket(AF_INET, SOCK_DGRAM, 0)) < 0) { - if (krb_debug) - fprintf(stderr,"%s: Can't open socket\n", prog); - return(SKDC_CANT); - } - /* from now on, exit through rtn label for cleanup */ - - no_host = 1; - /* get an initial allocation */ - n_hosts = 0; - for (i = 1; krb_get_krbhst(krbhst, lrealm, i) == KSUCCESS; ++i) { - if (krb_debug) { - printf("Getting host entry for %s...",krbhst); - (void) fflush(stdout); - } - host = gethostbyname(krbhst); - if (krb_debug) { - printf("%s.\n", - host ? "Got it" : "Didn't get it"); - (void) fflush(stdout); - } - if (!host) - continue; - no_host = 0; /* found at least one */ - n_hosts++; - /* preserve host network address to check later - * (would be better to preserve *all* addresses, - * take care of that later) - */ - hostlist = (struct hostent *) - realloc((char *)hostlist, - (unsigned) - sizeof(struct hostent)*(n_hosts+1)); - if (!hostlist) - return /*errno */SKDC_CANT; - bcopy((char *)host, (char *)&hostlist[n_hosts-1], - sizeof(struct hostent)); - host = &hostlist[n_hosts-1]; - cp = malloc((unsigned)host->h_length); - if (!cp) { - retval = /*errno */SKDC_CANT; - goto rtn; - } - bcopy((char *)host->h_addr, cp, host->h_length); -/* At least Sun OS version 3.2 (or worse) and Ultrix version 2.2 - (or worse) only return one name ... */ -#if !(defined(ULTRIX022) || (defined(SunOS) && SunOS < 40)) - host->h_addr_list = (char **)malloc(sizeof(char *)); - if (!host->h_addr_list) { - retval = /*errno */SKDC_CANT; - goto rtn; - } -#endif /* ULTRIX022 || SunOS */ - host->h_addr = cp; - bzero((char *)&hostlist[n_hosts], - sizeof(struct hostent)); - to.sin_family = host->h_addrtype; - bcopy(host->h_addr, (char *)&to.sin_addr, - host->h_length); - to.sin_port = krb_udp_port; - if (send_recv(pkt, rpkt, f, &to, hostlist)) { - retval = KSUCCESS; - goto rtn; - } - if (krb_debug) { - printf("Timeout, error, or wrong descriptor\n"); - (void) fflush(stdout); - } - } - if (no_host) { - if (krb_debug) - fprintf(stderr, "%s: can't find any Kerberos host.\n", - prog); - retval = SKDC_CANT; - goto rtn; - } - /* retry each host in sequence */ - for (retry = 0; retry < CLIENT_KRB_RETRY; ++retry) { - for (host = hostlist; host->h_name != (char *)NULL; host++) { - to.sin_family = host->h_addrtype; - bcopy(host->h_addr, (char *)&to.sin_addr, - host->h_length); - if (send_recv(pkt, rpkt, f, &to, hostlist)) { - retval = KSUCCESS; - goto rtn; - } - } - } - retval = SKDC_RETRY; -rtn: - (void) close(f); - if (hostlist) { - if(!no_host) { - register struct hostent *hp; - for (hp = hostlist; hp->h_name; hp++) -#if !(defined(ULTRIX022) || (defined(SunOS) && SunOS < 40)) - if (hp->h_addr_list) { -#endif /* ULTRIX022 || SunOS */ - if (hp->h_addr) - free(hp->h_addr); -#if !(defined(ULTRIX022) || (defined(SunOS) && SunOS < 40)) - free((char *)hp->h_addr_list); - } -#endif /* ULTRIX022 || SunOS */ - } - free((char *)hostlist); - } - return(retval); -} - -/* - * try to send out and receive message. - * return 1 on success, 0 on failure - */ - -static int -send_recv(pkt,rpkt,f,_to,addrs) - KTEXT pkt; - KTEXT rpkt; - int f; - struct sockaddr_in *_to; - struct hostent *addrs; -{ - fd_set readfds; - register struct hostent *hp; - struct sockaddr_in from; - int sin_size; - int numsent; - - if (krb_debug) { - if (_to->sin_family == AF_INET) - printf("Sending message to %s...", - inet_ntoa(_to->sin_addr)); - else - printf("Sending message..."); - (void) fflush(stdout); - } - if ((numsent = sendto(f,(char *)(pkt->dat), pkt->length, 0, - (struct sockaddr *)_to, - S_AD_SZ)) != pkt->length) { - if (krb_debug) - printf("sent only %d/%d\n",numsent, pkt->length); - return 0; - } - if (krb_debug) { - printf("Sent\nWaiting for reply..."); - (void) fflush(stdout); - } - FD_ZERO(&readfds); - FD_SET(f, &readfds); - errno = 0; - /* select - either recv is ready, or timeout */ - /* see if timeout or error or wrong descriptor */ - if (select(f + 1, &readfds, (fd_set *)0, (fd_set *)0, &timeout) < 1 - || !FD_ISSET(f, &readfds)) { - if (krb_debug) { - fprintf(stderr, "select failed: readfds=%x", - readfds); - perror(""); - } - return 0; - } - sin_size = sizeof(from); - if (recvfrom(f, (char *)(rpkt->dat), sizeof(rpkt->dat), 0, - (struct sockaddr *)&from, &sin_size) - < 0) { - if (krb_debug) - perror("recvfrom"); - return 0; - } - if (krb_debug) { - printf("received packet from %s\n", inet_ntoa(from.sin_addr)); - fflush(stdout); - } - for (hp = addrs; hp->h_name != (char *)NULL; hp++) { - if (!bcmp(hp->h_addr, (char *)&from.sin_addr.s_addr, - hp->h_length)) { - if (krb_debug) { - printf("Received it\n"); - (void) fflush(stdout); - } - return 1; - } - if (krb_debug) - fprintf(stderr, - "packet not from %lx\n", - (unsigned long)hp->h_addr); - } - if (krb_debug) - fprintf(stderr, "%s: received packet from wrong host! (%lx)\n", - "send_to_kdc(send_rcv)", from.sin_addr.s_addr); - return 0; -} |
