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-rw-r--r--crypto/kerberosIV/slave/kprop.c530
1 files changed, 530 insertions, 0 deletions
diff --git a/crypto/kerberosIV/slave/kprop.c b/crypto/kerberosIV/slave/kprop.c
new file mode 100644
index 0000000..8901121
--- /dev/null
+++ b/crypto/kerberosIV/slave/kprop.c
@@ -0,0 +1,530 @@
+/*
+
+Copyright 1987, 1988 by the Student Information Processing Board
+ of the Massachusetts Institute of Technology
+
+Permission to use, copy, modify, and distribute this software
+and its documentation for any purpose and without fee is
+hereby granted, provided that the above copyright notice
+appear in all copies and that both that copyright notice and
+this permission notice appear in supporting documentation,
+and that the names of M.I.T. and the M.I.T. S.I.P.B. not be
+used in advertising or publicity pertaining to distribution
+of the software without specific, written prior permission.
+M.I.T. and the M.I.T. S.I.P.B. make no representations about
+the suitability of this software for any purpose. It is
+provided "as is" without express or implied warranty.
+
+*/
+
+#include "slav_locl.h"
+
+RCSID("$Id: kprop.c,v 1.29 1997/05/25 02:43:54 joda Exp $");
+
+#include "kprop.h"
+
+static char kprop_version[KPROP_PROT_VERSION_LEN] = KPROP_PROT_VERSION;
+
+int debug = 0;
+
+char my_realm[REALM_SZ];
+int princ_data_size = 3 * sizeof(int32_t) + 3 * sizeof(unsigned char);
+short transfer_mode, net_transfer_mode;
+int force_flag;
+static char ok[] = ".dump_ok";
+
+struct slave_host {
+ u_int32_t net_addr;
+ char *name;
+ char *instance;
+ char *realm;
+ int not_time_yet;
+ int succeeded;
+ struct slave_host *next;
+};
+
+static
+int get_slaves(struct slave_host **psl, char *file, time_t ok_mtime)
+{
+ FILE *fin;
+ char namebuf[128], *inst;
+ char *pc;
+ struct hostent *host;
+ struct slave_host **th;
+ char path[256];
+ char *ppath;
+ struct stat stbuf;
+
+ if ((fin = fopen(file, "r")) == NULL)
+ err (1, "open(%s)", file);
+ strcpy(path, file);
+ if ((ppath = strrchr(path, '/'))) {
+ ppath += 1;
+ } else {
+ ppath = path;
+ }
+ th = psl;
+ while(fgets(namebuf, sizeof(namebuf), fin)){
+ if ((pc = strchr(namebuf, '\n'))) {
+ *pc = '\0';
+ } else {
+ if(strlen(namebuf) == sizeof(namebuf) - 1){
+ warnx ("Hostname too long (>= %d chars) in '%s'.",
+ (int) sizeof(namebuf), file);
+ do{
+ if(fgets(namebuf, sizeof(namebuf), fin) == NULL)
+ break;
+ }while(strchr(namebuf, '\n') == NULL);
+ continue;
+ }
+ }
+ if(namebuf[0] == 0 || namebuf[0] == '#')
+ continue;
+ host = gethostbyname(namebuf);
+ if (host == NULL) {
+ warnx ("Ignoring host '%s' in '%s': %s",
+ namebuf, file,
+#ifdef HAVE_H_ERRNO
+ hstrerror(h_errno)
+#else
+ "unknown error"
+#endif
+ );
+ continue;
+ }
+ (*th) = (struct slave_host *) malloc(sizeof(struct slave_host));
+ if (!*th)
+ errx (1, "No memory reading host list from '%s'.",
+ file);
+ memset(*th, 0, sizeof(struct slave_host));
+ (*th)->name = strdup(namebuf);
+ if ((*th)->name == NULL)
+ errx (1, "No memory reading host list from '%s'.",
+ file);
+ /* get kerberos cannonical instance name */
+ inst = krb_get_phost ((*th)->name);
+ (*th)->instance = strdup(inst);
+ if ((*th)->instance == NULL)
+ errx (1, "No memory reading host list from '%s'.",
+ file);
+ /* what a concept, slave servers in different realms! */
+ (*th)->realm = my_realm;
+ memcpy(&(*th)->net_addr, host->h_addr, sizeof((*th)->net_addr));
+ (*th)->not_time_yet = 0;
+ (*th)->succeeded = 0;
+ (*th)->next = NULL;
+ strcat(strcpy(ppath, (*th)->name), "-last-prop");
+ if (!force_flag && !stat(path, &stbuf) && stbuf.st_mtime > ok_mtime) {
+ (*th)->not_time_yet = 1;
+ (*th)->succeeded = 1; /* no change since last success */
+ }
+ th = &(*th)->next;
+ }
+ fclose(fin);
+ return (1);
+}
+
+/* The master -> slave protocol looks like this:
+ 1) 8 byte version string
+ 2) 2 bytes of "transfer mode" (net byte order of course)
+ 3) ticket/authentication send by sendauth
+ 4) 4 bytes of "block" length (u_int32_t)
+ 5) data
+
+ 4 and 5 repeat til EOF ...
+*/
+
+static int
+prop_to_slaves(struct slave_host *sl, int fd, char *fslv)
+{
+ u_char buf[KPROP_BUFSIZ];
+ u_char obuf[KPROP_BUFSIZ + 64]; /* leave room for private msg overhead */
+ struct sockaddr_in sin, my_sin;
+ int i, n, s;
+ struct slave_host *cs; /* current slave */
+ char path[256], my_host_name[MaxHostNameLen], *p_my_host_name;
+ char kprop_service_instance[INST_SZ];
+ char *pc;
+ u_int32_t cksum;
+ u_int32_t length, nlength;
+ long kerror;
+ KTEXT_ST ticket;
+ CREDENTIALS cred;
+ MSG_DAT msg_dat;
+ static char tkstring[] = "/tmp/kproptktXXXXXX";
+
+ des_key_schedule session_sched;
+
+ close(mkstemp(tkstring));
+ krb_set_tkt_string(tkstring);
+
+ memset(&sin, 0, sizeof sin);
+ sin.sin_family = AF_INET;
+ sin.sin_port = k_getportbyname ("krb_prop", "tcp", htons(KPROP_PORT));
+ sin.sin_addr.s_addr = INADDR_ANY;
+
+ strcpy(path, fslv);
+ if ((pc = strrchr(path, '/'))) {
+ pc += 1;
+ } else {
+ pc = path;
+ }
+
+ for (i = 0; i < 5; i++) { /* try each slave five times max */
+ for (cs = sl; cs; cs = cs->next) {
+ if (!cs->succeeded) {
+ if ((s = socket(AF_INET, SOCK_STREAM, 0)) < 0)
+ err (1, "socket");
+ memcpy(&sin.sin_addr, &cs->net_addr,
+ sizeof cs->net_addr);
+
+ if (connect(s, (struct sockaddr *) &sin, sizeof sin) < 0) {
+ warn ("connect(%s)", cs->name);
+ close(s);
+ continue; /*** NEXT SLAVE ***/
+ }
+
+ /* for krb_mk_{priv, safe} */
+ memset(&my_sin, 0, sizeof my_sin);
+ n = sizeof my_sin;
+ if (getsockname (s, (struct sockaddr *) &my_sin, &n) != 0) {
+ warn ("getsockname(%s)", cs->name);
+ close (s);
+ continue; /*** NEXT SLAVE ***/
+ }
+ if (n != sizeof (my_sin)) {
+ warnx ("can't get socketname %s length", cs->name);
+ close (s);
+ continue; /*** NEXT SLAVE ***/
+ }
+
+ /* Get ticket */
+ kerror = krb_mk_req (&ticket, KPROP_SERVICE_NAME,
+ cs->instance, cs->realm, (u_int32_t) 0);
+ /* if ticket has expired try to get a new one, but
+ * first get a TGT ...
+ */
+ if (kerror != MK_AP_OK) {
+ if (k_gethostname (my_host_name, sizeof(my_host_name)) != 0) {
+ warnx ("gethostname(%s): %s",
+ my_host_name,
+#ifdef HAVE_H_ERRNO
+ hstrerror(h_errno)
+#else
+ "unknown error"
+#endif
+ );
+ close (s);
+ break; /* next one can't work either! */
+ }
+ /* get canonical kerberos service instance name */
+ p_my_host_name = krb_get_phost (my_host_name);
+ /* copy it to make sure gethostbyname static doesn't
+ * screw us. */
+ strcpy (kprop_service_instance, p_my_host_name);
+ kerror = krb_get_svc_in_tkt (KPROP_SERVICE_NAME,
+#if 0
+ kprop_service_instance,
+#else
+ KRB_MASTER,
+#endif
+ my_realm,
+ KRB_TICKET_GRANTING_TICKET,
+ my_realm,
+ 96,
+ KPROP_SRVTAB);
+ if (kerror != INTK_OK) {
+ warnx ("%s: %s. While getting initial ticket\n",
+ cs->name, krb_get_err_text(kerror));
+ close (s);
+ goto punt;
+ }
+ kerror = krb_mk_req (&ticket, KPROP_SERVICE_NAME,
+ cs->instance, cs->realm, (u_int32_t) 0);
+ }
+ if (kerror != MK_AP_OK) {
+ warnx ("%s: krb_mk_req: %s",
+ cs->name, krb_get_err_text(kerror));
+ close (s);
+ continue; /*** NEXT SLAVE ***/
+ }
+
+ if (write(s, kprop_version, sizeof(kprop_version))
+ != sizeof(kprop_version)) {
+ warn ("%s", cs->name);
+ close (s);
+ continue; /*** NEXT SLAVE ***/
+ }
+
+ net_transfer_mode = htons (transfer_mode);
+ if (write(s, &net_transfer_mode, sizeof(net_transfer_mode))
+ != sizeof(net_transfer_mode)) {
+ warn ("write(%s)", cs->name);
+ close (s);
+ continue; /*** NEXT SLAVE ***/
+ }
+
+ kerror = krb_get_cred (KPROP_SERVICE_NAME, cs->instance,
+ cs->realm, &cred);
+ if (kerror != KSUCCESS) {
+ warnx ("%s: %s. Getting session key.",
+ cs->name, krb_get_err_text(kerror));
+ close (s);
+ continue; /*** NEXT SLAVE ***/
+ }
+#ifdef NOENCRYPTION
+ memset(session_sched, 0, sizeof(session_sched));
+#else
+ if (des_key_sched (&cred.session, session_sched)) {
+ warnx ("%s: can't make key schedule.",
+ cs->name);
+ close (s);
+ continue; /*** NEXT SLAVE ***/
+ }
+#endif
+ /* SAFE (quad_cksum) and CLEAR are just not good enough */
+ cksum = 0;
+#ifdef not_working_yet
+ if (transfer_mode != KPROP_TRANSFER_PRIVATE) {
+ cksum = get_data_checksum(fd, session_sched);
+ lseek(fd, 0L, 0);
+ }
+ else
+#endif
+ {
+ struct stat st;
+ fstat (fd, &st);
+ cksum = st.st_size;
+ }
+ kerror = krb_sendauth(KOPT_DO_MUTUAL,
+ s,
+ &ticket,
+ KPROP_SERVICE_NAME,
+ cs->instance,
+ cs->realm,
+ cksum,
+ &msg_dat,
+ &cred,
+ session_sched,
+ &my_sin,
+ &sin,
+ KPROP_PROT_VERSION);
+ if (kerror != KSUCCESS) {
+ warnx ("%s: krb_sendauth: %s.",
+ cs->name, krb_get_err_text(kerror));
+ close (s);
+ continue; /*** NEXT SLAVE ***/
+ }
+
+ lseek(fd, 0L, SEEK_SET); /* Rewind file before rereading it. */
+ while ((n = read(fd, buf, sizeof buf))) {
+ if (n < 0)
+ err (1, "read");
+ switch (transfer_mode) {
+ case KPROP_TRANSFER_PRIVATE:
+ case KPROP_TRANSFER_SAFE:
+ if (transfer_mode == KPROP_TRANSFER_PRIVATE)
+ length = krb_mk_priv (buf, obuf, n,
+ session_sched, &cred.session,
+ &my_sin, &sin);
+ else
+ length = krb_mk_safe (buf, obuf, n,
+ &cred.session,
+ &my_sin, &sin);
+ if (length == -1) {
+ warnx ("%s: %s failed.",
+ cs->name,
+ (transfer_mode == KPROP_TRANSFER_PRIVATE)
+ ? "krb_rd_priv" : "krb_rd_safe");
+ close (s);
+ continue; /*** NEXT SLAVE ***/
+ }
+ nlength = htonl(length);
+ if (write(s, &nlength, sizeof nlength)
+ != sizeof nlength) {
+ warn ("write(%s)", cs->name);
+ close (s);
+ continue; /*** NEXT SLAVE ***/
+ }
+ if (write(s, obuf, length) != length) {
+ warn ("write(%s)", cs->name);
+ close(s);
+ continue; /*** NEXT SLAVE ***/
+ }
+ break;
+ case KPROP_TRANSFER_CLEAR:
+ if (write(s, buf, n) != n) {
+ warn ("write(%s)", cs->name);
+ close(s);
+ continue; /*** NEXT SLAVE ***/
+ }
+ break;
+ }
+ }
+ close(s);
+ cs->succeeded = 1;
+ fprintf(stderr, "%s: success.\n", cs->name);
+ strcat(strcpy(pc, cs->name), "-last-prop");
+ unlink(path);
+ close(creat(path, 0600));
+ }
+ }
+ }
+punt:
+
+ dest_tkt();
+ for (cs = sl; cs; cs = cs->next) {
+ if (!cs->succeeded)
+ return (0); /* didn't get this slave */
+ }
+ return (1);
+}
+
+static void
+usage()
+{
+ /* already got floc and fslv, what is this? */
+ fprintf(stderr,
+ "\nUsage: kprop [-force] [-realm realm] [-private"
+#ifdef not_safe_yet
+ "|-safe|-clear"
+#endif
+ "] [data_file [slaves_file]]\n\n");
+ exit(1);
+}
+
+
+int
+main(int argc, char **argv)
+{
+ int fd, i;
+ char *floc, *floc_ok;
+ char *fslv;
+ struct stat stbuf, stbuf_ok;
+ time_t l_init, l_final;
+ char *pc;
+ int l_diff;
+ static struct slave_host *slave_host_list = NULL;
+ struct slave_host *sh;
+
+ set_progname (argv[0]);
+
+ transfer_mode = KPROP_TRANSFER_PRIVATE;
+
+ time(&l_init);
+ pc = ctime(&l_init);
+ pc[strlen(pc) - 1] = '\0';
+ printf("\nStart slave propagation: %s\n", pc);
+
+ floc = NULL;
+ fslv = NULL;
+
+ if (krb_get_lrealm(my_realm,1) != KSUCCESS)
+ errx (1, "Getting my kerberos realm. Check krb.conf");
+
+ for (i = 1; i < argc; i++)
+ switch (argv[i][0]) {
+ case '-':
+ if (strcmp (argv[i], "-private") == 0)
+ transfer_mode = KPROP_TRANSFER_PRIVATE;
+#ifdef not_safe_yet
+ else if (strcmp (argv[i], "-safe") == 0)
+ transfer_mode = KPROP_TRANSFER_SAFE;
+ else if (strcmp (argv[i], "-clear") == 0)
+ transfer_mode = KPROP_TRANSFER_CLEAR;
+#endif
+ else if (strcmp (argv[i], "-realm") == 0) {
+ i++;
+ if (i < argc)
+ strcpy(my_realm, argv[i]);
+ else
+ usage();
+ } else if (strcmp (argv[i], "-force") == 0)
+ force_flag++;
+ else {
+ warnx("unknown control argument %s.", argv[i]);
+ usage ();
+ }
+ break;
+ default:
+ /* positional arguments are marginal at best ... */
+ if (floc == NULL)
+ floc = argv[i];
+ else {
+ if (fslv == NULL)
+ fslv = argv[i];
+ else
+ usage();
+ }
+ }
+ if(floc == NULL)
+ floc = DB_DIR "/slave_dump";
+ if(fslv == NULL)
+ fslv = DB_DIR "/slaves";
+
+ asprintf (&floc_ok, "%s%s", floc, ok);
+ if (floc_ok == NULL)
+ errx (1, "out of memory in copying %s", floc);
+
+ if ((fd = open(floc, O_RDONLY)) < 0)
+ err (1, "open(%s)", floc);
+ if (k_flock(fd, K_LOCK_SH | K_LOCK_NB))
+ err (1, "flock(%s)", floc);
+ if (stat(floc, &stbuf))
+ err (1, "stat(%s)", floc);
+ if (stat(floc_ok, &stbuf_ok))
+ err (1, "stat(%s)", floc_ok);
+ if (stbuf.st_mtime > stbuf_ok.st_mtime)
+ errx (1, "'%s' more recent than '%s'.", floc, floc_ok);
+ if (!get_slaves(&slave_host_list, fslv, stbuf_ok.st_mtime))
+ errx (1, "can't read slave host file '%s'.", fslv);
+#ifdef KPROP_DBG
+ {
+ struct slave_host *sh;
+ int i;
+ fprintf(stderr, "\n\n");
+ fflush(stderr);
+ for (sh = slave_host_list; sh; sh = sh->next) {
+ fprintf(stderr, "slave %d: %s, %s", i++, sh->name,
+ inet_ntoa(sh->net_addr));
+ fflush(stderr);
+ }
+ }
+#endif /* KPROP_DBG */
+
+ if (!prop_to_slaves(slave_host_list, fd, fslv))
+ errx (1, "propagation failed.");
+ if (k_flock(fd, K_LOCK_UN))
+ err (1, "flock(%s, LOCK_UN)", floc);
+ fprintf(stderr, "\n\n");
+ for (sh = slave_host_list; sh; sh = sh->next) {
+ fprintf(stderr, "%s:\t\t%s\n", sh->name,
+ (sh->not_time_yet? "Not time yet" : (sh->succeeded ? "Succeeded" : "FAILED")));
+ }
+
+ time(&l_final);
+ l_diff = l_final - l_init;
+ printf("propagation finished, %d:%02d:%02d elapsed\n",
+ l_diff / 3600, (l_diff % 3600) / 60, l_diff % 60);
+
+ exit(0);
+}
+
+#ifdef doesnt_work_yet
+u_long get_data_checksum(fd, key_sched)
+ int fd;
+ des_key_schedule key_sched;
+{
+ u_int32_t cksum = 0;
+ int n;
+ char buf[BUFSIZ];
+ u_int32_t obuf[2];
+
+ while (n = read(fd, buf, sizeof buf)) {
+ if (n < 0)
+ err (1, "read");
+ cksum = cbc_cksum(buf, obuf, n, key_sched, key_sched);
+ }
+ return cksum;
+}
+#endif
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