--- /dev/null
+/*
+ * Copyright (C) 1989,2004 by the Massachusetts Institute of Technology
+ *
+ * WITHIN THAT CONSTRAINT, 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 name of M.I.T. not be used in advertising or publicity pertaining
+ * to distribution of the software without specific, written prior
+ * permission. M.I.T. makes no representations about the suitability of
+ * this software for any purpose. It is provided "as is" without express
+ * or implied warranty.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <ctype.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <errno.h>
+#include <afs/stds.h>
+#include <krb.h>
+#include <krb5.h>
+
+#ifdef WIN32
+#include <windows.h>
+
+#include <cm_config.h>
+#include <auth.h>
+#include <cellconfig.h>
+#include <pioctl_nt.h>
+#include <smb_iocons.h>
+
+#define stat _stat
+#define lstat stat
+#define __S_ISTYPE(mode, mask) (((mode) & _S_IFMT) == (mask))
+#define S_ISDIR(mode) __S_ISTYPE((mode), _S_IFDIR)
+
+#define DONT_HAVE_GET_AD_TKT
+#define MAXSYMLINKS 255
+
+/* Win32 uses get_krb_err_txt_entry(status) instead of krb_err_txt[status],
+* so we use a bit of indirection like the GNU CVS sources.
+*/
+#define krb_err_text(status) get_krb_err_txt_entry(status)
+
+#define DRIVECOLON ':' /* Drive letter separator */
+#define BDIR '\\' /* Other character that divides directories */
+
+static int
+readlink(char *path, char *buf, int buffers)
+{
+ return -1;
+}
+
+char * getcwd(char*, size_t);
+
+static long
+get_cellconfig_callback(void *cellconfig, struct sockaddr_in *addrp, char *namep)
+{
+ struct afsconf_cell *cc = (struct afsconf_cell *) cellconfig;
+
+ cc->hostAddr[cc->numServers] = *addrp;
+ strcpy(cc->hostName[cc->numServers], namep);
+ cc->numServers++;
+ return 0;
+}
+
+#else /* WIN32 */
+#include <sys/param.h>
+#include <netdb.h>
+#include <arpa/inet.h>
+#include <sys/socket.h>
+#include <unistd.h>
+
+#include <afs/param.h>
+#include <afs/auth.h>
+#include <afs/cellconfig.h>
+#include <afs/vice.h>
+#include <afs/venus.h>
+#include <afs/ptserver.h>
+
+#define krb_err_text(status) krb_err_txt[status]
+
+/* Cheesy test for determining AFS 3.5. */
+#ifndef AFSCONF_CLIENTNAME
+#define AFS35
+#endif
+
+#ifdef AFS35
+#include <afs/dirpath.h>
+#else
+#define AFSDIR_CLIENT_ETC_DIRPATH AFSCONF_CLIENTNAME
+#endif
+
+#endif /* WIN32 */
+
+#include "linked_list.h"
+
+#define AFSKEY "afs"
+#define AFSINST ""
+
+#define AKLOG_SUCCESS 0
+#define AKLOG_USAGE 1
+#define AKLOG_SOMETHINGSWRONG 2
+#define AKLOG_AFS 3
+#define AKLOG_KERBEROS 4
+#define AKLOG_TOKEN 5
+#define AKLOG_BADPATH 6
+#define AKLOG_MISC 7
+
+#ifndef NULL
+#define NULL 0
+#endif
+
+#ifndef TRUE
+#define TRUE 1
+#endif
+
+#ifndef FALSE
+#define FALSE 0
+#endif
+
+#ifndef MAXSYMLINKS
+#define MAXSYMLINKS 15
+#endif
+
+#define DIR '/' /* Character that divides directories */
+#define DIRSTRING "/" /* String form of above */
+#define VOLMARKER ':' /* Character separating cellname from mntpt */
+#define VOLMARKERSTRING ":" /* String form of above */
+
+typedef struct {
+ char cell[BUFSIZ];
+ char realm[REALM_SZ];
+} cellinfo_t;
+
+
+struct afsconf_cell ak_cellconfig; /* General information about the cell */
+
+static char *progname = NULL; /* Name of this program */
+static int dflag = FALSE; /* Give debugging information */
+static int noprdb = FALSE; /* Skip resolving name to id? */
+static int force = FALSE; /* Bash identical tokens? */
+static linked_list authedcells; /* List of cells already logged to */
+
+static int usev5 = TRUE; /* use kerberos 5? */
+static krb5_ccache _krb425_ccache;
+
+long GetLocalCell(struct afsconf_dir **pconfigdir, char *local_cell)
+{
+ if (!(*pconfigdir = afsconf_Open(AFSDIR_CLIENT_ETC_DIRPATH)))
+ {
+ fprintf(stderr, "%s: can't get afs configuration (afsconf_Open(%s))\n",
+ progname, AFSDIR_CLIENT_ETC_DIRPATH);
+ exit(AKLOG_AFS);
+ }
+
+ return afsconf_GetLocalCell(*pconfigdir, local_cell, MAXCELLCHARS);
+}
+
+long GetCellInfo(struct afsconf_dir **pconfigdir, char* cell,
+struct afsconf_cell **pcellconfig)
+{
+ return afsconf_GetCellInfo(*pconfigdir, cell, NULL, *pcellconfig);
+}
+
+void CloseConf(struct afsconf_dir **pconfigdir)
+{
+ (void) afsconf_Close(*pconfigdir);
+}
+
+void ViceIDToUsername(char *username, int *status,
+struct ktc_principal *aserver)
+{
+#ifndef WIN32
+ long viceId; /* AFS uid of user */
+
+ if (dflag)
+ printf("About to resolve name %s to id\n", username);
+
+ if (!pr_Initialize (0, AFSDIR_CLIENT_ETC_DIRPATH, aserver->cell))
+ *status = pr_SNameToId (username, &viceId);
+
+ if (dflag)
+ {
+ if (*status)
+ printf("Error %d\n", *status);
+ else
+ printf("Id %d\n", viceId);
+ }
+
+ /*
+ * This is a crock, but it is Transarc's crock, so
+ * we have to play along in order to get the
+ * functionality. The way the afs id is stored is
+ * as a string in the username field of the token.
+ * Contrary to what you may think by looking at
+ * the code for tokens, this hack (AFS ID %d) will
+ * not work if you change %d to something else.
+ */
+ if ((*status == 0) && (viceId != ANONYMOUSID))
+ sprintf (username, "AFS ID %d", viceId);
+#endif
+}
+
+char *LastComponent(char *str)
+{
+ char *ret = strrchr(str, DIR);
+
+#ifdef WIN32
+ if (!ret)
+ ret = strrchr(str, BDIR);
+#endif
+ return ret;
+}
+
+int FirstComponent(char *str)
+{
+ return (int)(
+#ifdef WIN32
+ strchr(str, BDIR) ||
+#endif
+ strchr(str, DIR));
+}
+
+void CopyPathColon(char *origpath, char *path, char *pathtocheck)
+{
+#ifdef WIN32
+ if (origpath[1] == DRIVECOLON)
+ {
+ strncpy(pathtocheck, origpath, 2);
+ strcpy(path, origpath+2);
+ }
+ else
+#endif
+ strcpy(path, origpath);
+}
+
+int BeginsWithDir(char *str, int colon)
+{
+ return (str[0] == DIR) ||
+#ifdef WIN32
+ ((str[0] == BDIR) || (colon && str[1] == DRIVECOLON));
+#else
+ FALSE;
+#endif
+}
+
+
+/* This is a pretty gross hack. Linking against the Transarc
+* libraries pulls in some rxkad functions which use des. (I don't
+* think they ever get called.) With Transarc-supplied libraries this
+* creates a reliance on the symbol des_pcbc_init() which is only in
+* Transarc's DES libraries (it's an exportability symbol-hiding
+* thing), which we don't want to use because they don't work with
+* MIT's krb4 routines. So export a des_pcbc_init() symbol here so we
+* don't have to link against Transarc's des library.
+*/
+int des_pcbc_init()
+{
+ abort();
+}
+
+static int get_cred(char *name, char *inst, char *realm, CREDENTIALS *c)
+{
+ int status;
+
+ status = krb_get_cred(name, inst, realm, c);
+ if (status != KSUCCESS)
+ {
+#ifdef DONT_HAVE_GET_AD_TKT
+ KTEXT_ST ticket;
+ status = krb_mk_req(&ticket, name, inst, realm, 0);
+#else
+ status = get_ad_tkt(name, inst, realm, 255);
+#endif
+ if (status == KSUCCESS)
+ status = krb_get_cred(name, inst, realm, c);
+ }
+
+ return (status);
+}
+
+static int get_v5cred(krb5_context context,
+ char *name, char *inst, char *realm, CREDENTIALS *c,
+ krb5_creds **creds)
+{
+ krb5_creds increds;
+ krb5_error_code r;
+ static krb5_principal client_principal = 0;
+
+ memset((char *)&increds, 0, sizeof(increds));
+
+ if ((r = krb5_build_principal(context, &increds.server,
+ strlen(realm), realm,
+ name,
+ (inst && strlen(inst)) ? inst : 0,
+ 0))) {
+ return((int)r);
+ }
+
+ if (!_krb425_ccache)
+ krb5_cc_default(context, &_krb425_ccache);
+ if (!client_principal)
+ krb5_cc_get_principal(context, _krb425_ccache, &client_principal);
+
+ increds.client = client_principal;
+ increds.times.endtime = 0;
+ /* Ask for DES since that is what V4 understands */
+ increds.keyblock.enctype = ENCTYPE_DES_CBC_CRC;
+
+ r = krb5_get_credentials(context, 0, _krb425_ccache, &increds, creds);
+ if (r)
+ return((int)r);
+
+ /* This requires krb524d to be running with the KDC */
+ if (c != NULL)
+ r = krb5_524_convert_creds(context, *creds, c);
+ return((int)r);
+}
+
+/* There is no header for this function. It is supposed to be private */
+int krb_get_admhst(char *h,char *r, int n);
+
+static char *afs_realm_of_cell(struct afsconf_cell *cellconfig)
+{
+ char krbhst[MAX_HSTNM];
+ static char krbrlm[REALM_SZ+1];
+
+ if (!cellconfig)
+ return 0;
+
+ strcpy(krbrlm, (char *) krb_realmofhost(cellconfig->hostName[0]));
+
+ if (krb_get_admhst(krbhst, krbrlm, 1) != KSUCCESS)
+ {
+ char *s = krbrlm;
+ char *t = cellconfig->name;
+ int c;
+
+ while (c = *t++)
+ {
+ if (islower(c))
+ c = toupper(c);
+ *s++ = c;
+ }
+ *s++ = 0;
+
+ }
+ return krbrlm;
+}
+
+static char *afs_realm_of_cell5(krb5_context context, struct afsconf_cell *cellconfig)
+{
+ char ** krbrlms;
+ static char krbrlm[REALM_SZ+1];
+ krb5_error_code status;
+
+ if (!cellconfig)
+ return 0;
+
+ status = krb5_get_host_realm( context, cellconfig->hostName[0], &krbrlms );
+
+ if(krbrlms && krbrlms[0])
+ strcpy(krbrlm, krbrlms[0]);
+ else {
+ strcpy(krbrlm, cellconfig->name);
+ strupr(krbrlm);
+ }
+
+ if(krbrlms)
+ krb5_free_host_realm( context, krbrlms );
+
+ return krbrlm;
+}
+
+static char *copy_cellinfo(cellinfo_t *cellinfo)
+{
+ cellinfo_t *new_cellinfo;
+
+ if (new_cellinfo = (cellinfo_t *)malloc(sizeof(cellinfo_t)))
+ memcpy(new_cellinfo, cellinfo, sizeof(cellinfo_t));
+
+ return ((char *)new_cellinfo);
+}
+
+
+static char *copy_string(char *string)
+{
+ char *new_string;
+
+ if (new_string = (char *)calloc(strlen(string) + 1, sizeof(char)))
+ (void) strcpy(new_string, string);
+
+ return (new_string);
+}
+
+
+static int get_cellconfig(char *cell, struct afsconf_cell *cellconfig,
+ char *local_cell)
+{
+ int status = AKLOG_SUCCESS;
+ struct afsconf_dir *configdir = 0;
+
+ memset(local_cell, 0, sizeof(local_cell));
+ memset(cellconfig, 0, sizeof(*cellconfig));
+
+ if (GetLocalCell(&configdir, local_cell))
+ {
+ fprintf(stderr, "%s: can't determine local cell.\n", progname);
+ exit(AKLOG_AFS);
+ }
+
+ if ((cell == NULL) || (cell[0] == 0))
+ cell = local_cell;
+
+ if (GetCellInfo(&configdir, cell, &cellconfig))
+ {
+ fprintf(stderr, "%s: Can't get information about cell %s.\n",
+ progname, cell);
+ status = AKLOG_AFS;
+ }
+
+
+ CloseConf(&configdir);
+
+ return(status);
+}
+
+static int get_v5_user_realm(krb5_context context,char *realm)
+{
+ static krb5_principal client_principal = 0;
+ int i;
+
+ if (!_krb425_ccache)
+ krb5_cc_default(context, &_krb425_ccache);
+ if (!client_principal)
+ krb5_cc_get_principal(context, _krb425_ccache, &client_principal);
+
+ i = krb5_princ_realm(context, client_principal)->length;
+ if (i < REALM_SZ-1) i = REALM_SZ-1;
+ strncpy(realm,krb5_princ_realm(context, client_principal)->data,i);
+ realm[i] = 0;
+ return(KSUCCESS);
+}
+
+/*
+* Log to a cell. If the cell has already been logged to, return without
+* doing anything. Otherwise, log to it and mark that it has been logged
+* to. */
+static int auth_to_cell(krb5_context context, char *cell, char *realm)
+{
+ int status = AKLOG_SUCCESS;
+ char username[BUFSIZ]; /* To hold client username structure */
+
+ char name[ANAME_SZ]; /* Name of afs key */
+ char instance[INST_SZ]; /* Instance of afs key */
+ char realm_of_user[REALM_SZ]; /* Kerberos realm of user */
+ char realm_of_cell[REALM_SZ]; /* Kerberos realm of cell */
+ char local_cell[MAXCELLCHARS+1];
+ char cell_to_use[MAXCELLCHARS+1]; /* Cell to authenticate to */
+
+ krb5_creds *v5cred = NULL;
+ CREDENTIALS c;
+ struct ktc_principal aserver;
+ struct ktc_principal aclient;
+ struct ktc_token atoken, btoken;
+
+ /* try to avoid an expensive call to get_cellconfig */
+ if (cell && ll_string_check(&authedcells, cell))
+ {
+ if (dflag)
+ printf("Already authenticated to %s (or tried to)\n", cell);
+ return(AKLOG_SUCCESS);
+ }
+
+ memset(name, 0, sizeof(name));
+ memset(instance, 0, sizeof(instance));
+ memset(realm_of_user, 0, sizeof(realm_of_user));
+ memset(realm_of_cell, 0, sizeof(realm_of_cell));
+
+ /* NULL or empty cell returns information on local cell */
+ if (status = get_cellconfig(cell, &ak_cellconfig, local_cell))
+ return(status);
+
+ strncpy(cell_to_use, ak_cellconfig.name, MAXCELLCHARS);
+ cell_to_use[MAXCELLCHARS] = 0;
+
+ if (ll_string_check(&authedcells, cell_to_use))
+ {
+ if (dflag)
+ printf("Already authenticated to %s (or tried to)\n", cell_to_use);
+ return(AKLOG_SUCCESS);
+ }
+
+ /*
+ * Record that we have attempted to log to this cell. We do this
+ * before we try rather than after so that we will not try
+ * and fail repeatedly for one cell.
+ */
+ (void)ll_add_string(&authedcells, cell_to_use);
+
+ if (dflag)
+ printf("Authenticating to cell %s.\n", cell_to_use);
+
+ if (realm && realm[0])
+ strcpy(realm_of_cell, realm);
+ else
+ strcpy(realm_of_cell,
+ (usev5)?
+ afs_realm_of_cell5(context, &ak_cellconfig) :
+ afs_realm_of_cell(&ak_cellconfig));
+
+ /* We use the afs.<cellname> convention here... */
+ strcpy(name, AFSKEY);
+ strncpy(instance, cell_to_use, sizeof(instance));
+ instance[sizeof(instance)-1] = '\0';
+
+ /*
+ * Extract the session key from the ticket file and hand-frob an
+ * afs style authenticator.
+ */
+
+ if (usev5)
+ { /* using krb5 */
+ if (dflag)
+ printf("Getting v5 tickets: %s/%s@%s\n", name, instance, realm_of_cell);
+ status = get_v5cred(context, name, instance, realm_of_cell, NULL, &v5cred);
+ if (status == KRB5KDC_ERR_S_PRINCIPAL_UNKNOWN) {
+ if (dflag)
+ printf("Getting v5 tickets: %s@%s\n", name, realm_of_cell);
+ status = get_v5cred(context, name, "", realm_of_cell, NULL, &v5cred);
+ }
+ }
+ else
+ {
+ /*
+ * Try to obtain AFS tickets. Because there are two valid service
+ * names, we will try both, but trying the more specific first.
+ *
+ * afs.<cell>@<realm>
+ * afs@<realm>
+ */
+ if (dflag)
+ printf("Getting tickets: %s.%s@%s\n", name, instance, realm_of_cell);
+ status = get_cred(name, instance, realm_of_cell, &c);
+ if (status == KDC_PR_UNKNOWN)
+ {
+ if (dflag)
+ printf("Getting tickets: %s@%s\n", name, realm_of_cell);
+ status = get_cred(name, "", realm_of_cell, &c);
+ }
+ }
+
+ /* TODO: get k5 error text */
+ if (status != KSUCCESS)
+ {
+ if (dflag)
+ printf("Kerberos error code returned by get_cred: %d\n", status);
+ fprintf(stderr, "%s: Couldn't get %s AFS tickets: %s\n",
+ progname, cell_to_use,
+ (usev5)?"":
+ krb_err_text(status));
+ return(AKLOG_KERBEROS);
+ }
+
+ strncpy(aserver.name, AFSKEY, MAXKTCNAMELEN - 1);
+ strncpy(aserver.instance, AFSINST, MAXKTCNAMELEN - 1);
+ strncpy(aserver.cell, cell_to_use, MAXKTCREALMLEN - 1);
+
+ if (usev5) {
+ /* This code inserts the entire K5 ticket into the token
+ * No need to perform a krb524 translation which is
+ * commented out in the code below
+ */
+ char * p;
+ int len;
+
+ len = min(v5cred->client->data[0].length,MAXKTCNAMELEN - 1);
+ strncpy(username, v5cred->client->data[0].data, len);
+ username[len] = '\0';
+
+ if ( v5cred->client->length > 1 ) {
+ strcat(username, ".");
+ p = username + strlen(username);
+ len = min(v5cred->client->data[1].length,MAXKTCNAMELEN - strlen(username) - 1);
+ strncpy(p, v5cred->client->data[1].data, len);
+ p[len] = '\0';
+ }
+
+ memset(&atoken, '\0', sizeof(atoken));
+ atoken.kvno = RXKAD_TKT_TYPE_KERBEROS_V5;
+ atoken.startTime = v5cred->times.starttime;
+ atoken.endTime = v5cred->times.endtime;
+ memcpy(&atoken.sessionKey, v5cred->keyblock.contents, v5cred->keyblock.length);
+ atoken.ticketLen = v5cred->ticket.length;
+ memcpy(atoken.ticket, v5cred->ticket.data, atoken.ticketLen);
+ } else
+ {
+ strcpy (username, c.pname);
+ if (c.pinst[0])
+ {
+ strcat(username, ".");
+ strcat(username, c.pinst);
+ }
+
+ atoken.kvno = c.kvno;
+ atoken.startTime = c.issue_date;
+ /* ticket lifetime is in five-minutes blocks. */
+ atoken.endTime = c.issue_date + ((unsigned char)c.lifetime * 5 * 60);
+
+ memcpy(&atoken.sessionKey, c.session, 8);
+ atoken.ticketLen = c.ticket_st.length;
+ memcpy(atoken.ticket, c.ticket_st.dat, atoken.ticketLen);
+ }
+
+ if (!force &&
+ !ktc_GetToken(&aserver, &btoken, sizeof(btoken), &aclient) &&
+ atoken.kvno == btoken.kvno &&
+ atoken.ticketLen == btoken.ticketLen &&
+ !memcmp(&atoken.sessionKey, &btoken.sessionKey, sizeof(atoken.sessionKey)) &&
+ !memcmp(atoken.ticket, btoken.ticket, atoken.ticketLen))
+ {
+ if (dflag)
+ printf("Identical tokens already exist; skipping.\n");
+ return 0;
+ }
+
+ if (noprdb)
+ {
+ if (dflag)
+ printf("Not resolving name %s to id (-noprdb set)\n", username);
+ }
+ else
+ {
+ if(usev5) {
+ if((status = get_v5_user_realm(context, realm_of_user)) != KSUCCESS) {
+ fprintf(stderr, "%s: Couldn't determine realm of user: %d\n",
+ progname, status);
+ return(AKLOG_KERBEROS);
+ }
+ } else
+ {
+ if ((status = krb_get_tf_realm(TKT_FILE, realm_of_user)) != KSUCCESS)
+ {
+ fprintf(stderr, "%s: Couldn't determine realm of user: %s)",
+ progname, krb_err_text(status));
+ return(AKLOG_KERBEROS);
+ }
+ }
+
+ if (strcmp(realm_of_user, realm_of_cell))
+ {
+ strcat(username, "@");
+ strcat(username, realm_of_user);
+ }
+
+ ViceIDToUsername(username, &status, &aserver);
+ }
+
+ if (dflag)
+ printf("Set username to %s\n", username);
+
+ /* Reset the "aclient" structure before we call ktc_SetToken.
+ * This structure was first set by the ktc_GetToken call when
+ * we were comparing whether identical tokens already existed.
+ */
+ strncpy(aclient.name, username, MAXKTCNAMELEN - 1);
+ strcpy(aclient.instance, "");
+ if (usev5) {
+ int len = min(v5cred->client->realm.length,MAXKTCNAMELEN - 1);
+ strncpy(aclient.cell, v5cred->client->realm.data, len);
+ aclient.cell[len] = '\0';
+ } else
+ strncpy(aclient.cell, c.realm, MAXKTCREALMLEN - 1);
+
+ if (dflag)
+ printf("Getting tokens.\n");
+ if (status = ktc_SetToken(&aserver, &atoken, &aclient, 0))
+ {
+ fprintf(stderr,
+ "%s: unable to obtain tokens for cell %s (status: %d).\n",
+ progname, cell_to_use, status);
+ status = AKLOG_TOKEN;
+ }
+
+ return(status);
+}
+
+static int get_afs_mountpoint(char *file, char *mountpoint, int size)
+{
+ char our_file[MAXPATHLEN + 1];
+ char *parent_dir;
+ char *last_component;
+ struct ViceIoctl vio;
+ char cellname[BUFSIZ];
+
+ memset(our_file, 0, sizeof(our_file));
+ strcpy(our_file, file);
+
+ if (last_component = LastComponent(our_file))
+ {
+ *last_component++ = 0;
+ parent_dir = our_file;
+ }
+ else
+ {
+ last_component = our_file;
+ parent_dir = ".";
+ }
+
+ memset(cellname, 0, sizeof(cellname));
+
+ vio.in = last_component;
+ vio.in_size = strlen(last_component)+1;
+ vio.out_size = size;
+ vio.out = mountpoint;
+
+ if (!pioctl(parent_dir, VIOC_AFS_STAT_MT_PT, &vio, 0))
+ {
+ if (strchr(mountpoint, VOLMARKER) == NULL)
+ {
+ vio.in = file;
+ vio.in_size = strlen(file) + 1;
+ vio.out_size = sizeof(cellname);
+ vio.out = cellname;
+
+ if (!pioctl(file, VIOC_FILE_CELL_NAME, &vio, 1))
+ {
+ strcat(cellname, VOLMARKERSTRING);
+ strcat(cellname, mountpoint + 1);
+ memset(mountpoint + 1, 0, size - 1);
+ strcpy(mountpoint + 1, cellname);
+ }
+ }
+ return(TRUE);
+ }
+ else {
+ return(FALSE);
+ }
+}
+
+/*
+* This routine each time it is called returns the next directory
+* down a pathname. It resolves all symbolic links. The first time
+* it is called, it should be called with the name of the path
+* to be descended. After that, it should be called with the arguemnt
+* NULL.
+*/
+static char *next_path(char *origpath)
+{
+ static char path[MAXPATHLEN + 1];
+ static char pathtocheck[MAXPATHLEN + 1];
+
+ int link = FALSE; /* Is this a symbolic link? */
+ char linkbuf[MAXPATHLEN + 1];
+ char tmpbuf[MAXPATHLEN + 1];
+
+ static char *last_comp; /* last component of directory name */
+ static char *elast_comp; /* End of last component */
+ char *t;
+ int len;
+
+ static int symlinkcount = 0; /* We can't exceed MAXSYMLINKS */
+
+ /* If we are given something for origpath, we are initializing only. */
+ if (origpath)
+ {
+ memset(path, 0, sizeof(path));
+ memset(pathtocheck, 0, sizeof(pathtocheck));
+ CopyPathColon(origpath, path, pathtocheck);
+ last_comp = path;
+ symlinkcount = 0;
+ return(NULL);
+ }
+
+ /* We were not given origpath; find then next path to check */
+
+ /* If we've gotten all the way through already, return NULL */
+ if (last_comp == NULL)
+ return(NULL);
+
+ do
+ {
+ while (BeginsWithDir(last_comp, FALSE))
+ strncat(pathtocheck, last_comp++, 1);
+ len = (elast_comp = LastComponent(last_comp))
+ ? elast_comp - last_comp : strlen(last_comp);
+ strncat(pathtocheck, last_comp, len);
+ memset(linkbuf, 0, sizeof(linkbuf));
+ if (link = (readlink(pathtocheck, linkbuf, sizeof(linkbuf)) > 0))
+ {
+ if (++symlinkcount > MAXSYMLINKS)
+ {
+ fprintf(stderr, "%s: %s\n", progname, strerror(ELOOP));
+ exit(AKLOG_BADPATH);
+ }
+ memset(tmpbuf, 0, sizeof(tmpbuf));
+ if (elast_comp)
+ strcpy(tmpbuf, elast_comp);
+ if (BeginsWithDir(linkbuf, FALSE))
+ {
+ /*
+ * If this is a symbolic link to an absolute path,
+ * replace what we have by the absolute path.
+ */
+ memset(path, 0, strlen(path));
+ memcpy(path, linkbuf, sizeof(linkbuf));
+ strcat(path, tmpbuf);
+ last_comp = path;
+ elast_comp = NULL;
+ memset(pathtocheck, 0, sizeof(pathtocheck));
+ }
+ else
+ {
+ /*
+ * If this is a symbolic link to a relative path,
+ * replace only the last component with the link name.
+ */
+ strncpy(last_comp, linkbuf, strlen(linkbuf) + 1);
+ strcat(path, tmpbuf);
+ elast_comp = NULL;
+ if (t = LastComponent(pathtocheck))
+ {
+ t++;
+ memset(t, 0, strlen(t));
+ }
+ else
+ memset(pathtocheck, 0, sizeof(pathtocheck));
+ }
+ }
+ else
+ last_comp = elast_comp;
+ }
+ while(link);
+
+ return(pathtocheck);
+}
+
+/*
+* This routine descends through a path to a directory, logging to
+* every cell it encounters along the way.
+*/
+static int auth_to_path(krb5_context context, char *path)
+{
+ int status = AKLOG_SUCCESS;
+ int auth_to_cell_status = AKLOG_SUCCESS;
+
+ char *nextpath;
+ char pathtocheck[MAXPATHLEN + 1];
+ char mountpoint[MAXPATHLEN + 1];
+
+ char *cell;
+ char *endofcell;
+
+ /* Initialize */
+ if (BeginsWithDir(path, TRUE))
+ strcpy(pathtocheck, path);
+ else
+ {
+ if (getcwd(pathtocheck, sizeof(pathtocheck)) == NULL)
+ {
+ fprintf(stderr, "Unable to find current working directory:\n");
+ fprintf(stderr, "%s\n", pathtocheck);
+ fprintf(stderr, "Try an absolute pathname.\n");
+ exit(AKLOG_BADPATH);
+ }
+ else
+ {
+ /* in WIN32, if getcwd returns a root dir (eg: c:\), the returned string
+ * will already have a trailing slash ('\'). Otherwise, the string will
+ * end in the last directory name */
+#ifdef WIN32
+ if(pathtocheck[strlen(pathtocheck) - 1] != BDIR)
+#endif
+ strcat(pathtocheck, DIRSTRING);
+ strcat(pathtocheck, path);
+ }
+ }
+ next_path(pathtocheck);
+
+ /* Go on to the next level down the path */
+ while (nextpath = next_path(NULL))
+ {
+ strcpy(pathtocheck, nextpath);
+ if (dflag)
+ printf("Checking directory [%s]\n", pathtocheck);
+ /*
+ * If this is an afs mountpoint, determine what cell from
+ * the mountpoint name which is of the form
+ * #cellname:volumename or %cellname:volumename.
+ */
+ if (get_afs_mountpoint(pathtocheck, mountpoint, sizeof(mountpoint)))
+ {
+ if(dflag)
+ printf("Found mount point [%s]\n", mountpoint);
+ /* skip over the '#' or '%' */
+ cell = mountpoint + 1;
+ if (endofcell = strchr(mountpoint, VOLMARKER))
+ {
+ *endofcell = '\0';
+ if (auth_to_cell_status = auth_to_cell(context, cell, NULL))
+ {
+ if (status == AKLOG_SUCCESS)
+ status = auth_to_cell_status;
+ else if (status != auth_to_cell_status)
+ status = AKLOG_SOMETHINGSWRONG;
+ }
+ }
+ }
+ else
+ {
+ struct stat st;
+
+ if (lstat(pathtocheck, &st) < 0)
+ {
+ /*
+ * If we've logged and still can't stat, there's
+ * a problem...
+ */
+ fprintf(stderr, "%s: stat(%s): %s\n", progname,
+ pathtocheck, strerror(errno));
+ return(AKLOG_BADPATH);
+ }
+ else if (!S_ISDIR(st.st_mode))
+ {
+ /* Allow only directories */
+ fprintf(stderr, "%s: %s: %s\n", progname, pathtocheck,
+ strerror(ENOTDIR));
+ return(AKLOG_BADPATH);
+ }
+ }
+ }
+
+ return(status);
+}
+
+/* Print usage message and exit */
+static void usage(void)
+{
+ fprintf(stderr, "\nUsage: %s %s%s%s%s\n", progname,
+ "[-d] [[-cell | -c] cell [-k krb_realm]] ",
+ "[[-p | -path] pathname]\n",
+ " [-noprdb] [-force]\n",
+ " [-5 | -4]\n"
+ );
+ fprintf(stderr, " -d gives debugging information.\n");
+ fprintf(stderr, " krb_realm is the kerberos realm of a cell.\n");
+ fprintf(stderr, " pathname is the name of a directory to which ");
+ fprintf(stderr, "you wish to authenticate.\n");
+ fprintf(stderr, " -noprdb means don't try to determine AFS ID.\n");
+ fprintf(stderr, " -5 or -4 selects whether to use Kerberos V or Kerberos IV.\n"
+ " (default is Kerberos V)\n");
+ fprintf(stderr, " No commandline arguments means ");
+ fprintf(stderr, "authenticate to the local cell.\n");
+ fprintf(stderr, "\n");
+ exit(AKLOG_USAGE);
+}
+
+int main(int argc, char *argv[])
+{
+ int status = AKLOG_SUCCESS;
+ int i;
+ int somethingswrong = FALSE;
+
+ cellinfo_t cellinfo;
+
+ extern char *progname; /* Name of this program */
+
+ extern int dflag; /* Debug mode */
+
+ int cmode = FALSE; /* Cellname mode */
+ int pmode = FALSE; /* Path name mode */
+
+ char realm[REALM_SZ]; /* Kerberos realm of afs server */
+ char cell[BUFSIZ]; /* Cell to which we are authenticating */
+ char path[MAXPATHLEN + 1]; /* Path length for path mode */
+
+ linked_list cells; /* List of cells to log to */
+ linked_list paths; /* List of paths to log to */
+ ll_node *cur_node;
+
+ krb5_context context;
+
+ memset(&cellinfo, 0, sizeof(cellinfo));
+
+ memset(realm, 0, sizeof(realm));
+ memset(cell, 0, sizeof(cell));
+ memset(path, 0, sizeof(path));
+
+ ll_init(&cells);
+ ll_init(&paths);
+
+ /* Store the program name here for error messages */
+ if (progname = LastComponent(argv[0]))
+ progname++;
+ else
+ progname = argv[0];
+
+ /* Initialize list of cells to which we have authenticated */
+ (void)ll_init(&authedcells);
+
+ /* Parse commandline arguments and make list of what to do. */
+ for (i = 1; i < argc; i++)
+ {
+ if (strcmp(argv[i], "-d") == 0)
+ dflag++;
+ else if (strcmp(argv[i], "-5") == 0)
+ usev5++;
+ else if (strcmp(argv[i], "-4") == 0)
+ usev5 = 0;
+ else if (strcmp(argv[i], "-noprdb") == 0)
+ noprdb++;
+ else if (strcmp(argv[i], "-force") == 0)
+ force++;
+ else if (((strcmp(argv[i], "-cell") == 0) ||
+ (strcmp(argv[i], "-c") == 0)) && !pmode)
+ {
+ if (++i < argc)
+ {
+ cmode++;
+ strcpy(cell, argv[i]);
+ }
+ else
+ usage();
+ }
+ else if (((strcmp(argv[i], "-path") == 0) ||
+ (strcmp(argv[i], "-p") == 0)) && !cmode)
+ {
+ if (++i < argc)
+ {
+ pmode++;
+ strcpy(path, argv[i]);
+ }
+ else
+ usage();
+ }
+ else if (argv[i][0] == '-')
+ usage();
+ else if (!pmode && !cmode)
+ {
+ if (FirstComponent(argv[i]) || (strcmp(argv[i], ".") == 0) ||
+ (strcmp(argv[i], "..") == 0))
+ {
+ pmode++;
+ strcpy(path, argv[i]);
+ }
+ else
+ {
+ cmode++;
+ strcpy(cell, argv[i]);
+ }
+ }
+ else
+ usage();
+
+ if (cmode)
+ {
+ if (((i + 1) < argc) && (strcmp(argv[i + 1], "-k") == 0))
+ {
+ i += 2;
+ if (i < argc)
+ strcpy(realm, argv[i]);
+ else
+ usage();
+ }
+ /* Add this cell to list of cells */
+ strcpy(cellinfo.cell, cell);
+ strcpy(cellinfo.realm, realm);
+ if (cur_node = ll_add_node(&cells, ll_tail))
+ {
+ char *new_cellinfo;
+ if (new_cellinfo = copy_cellinfo(&cellinfo))
+ ll_add_data(cur_node, new_cellinfo);
+ else
+ {
+ fprintf(stderr, "%s: failure copying cellinfo.\n", progname);
+ exit(AKLOG_MISC);
+ }
+ }
+ else
+ {
+ fprintf(stderr, "%s: failure adding cell to cells list.\n",
+ progname);
+ exit(AKLOG_MISC);
+ }
+ memset(&cellinfo, 0, sizeof(cellinfo));
+ cmode = FALSE;
+ memset(cell, 0, sizeof(cell));
+ memset(realm, 0, sizeof(realm));
+ }
+ else if (pmode)
+ {
+ /* Add this path to list of paths */
+ if (cur_node = ll_add_node(&paths, ll_tail))
+ {
+ char *new_path;
+ if (new_path = copy_string(path))
+ ll_add_data(cur_node, new_path);
+ else
+ {
+ fprintf(stderr, "%s: failure copying path name.\n",
+ progname);
+ exit(AKLOG_MISC);
+ }
+ }
+ else
+ {
+ fprintf(stderr, "%s: failure adding path to paths list.\n",
+ progname);
+ exit(AKLOG_MISC);
+ }
+ pmode = FALSE;
+ memset(path, 0, sizeof(path));
+ }
+ }
+
+ if(usev5)
+ krb5_init_context(&context);
+
+ /* If nothing was given, log to the local cell. */
+ if ((cells.nelements + paths.nelements) == 0)
+ status = auth_to_cell(context, NULL, NULL);
+ else
+ {
+ /* Log to all cells in the cells list first */
+ for (cur_node = cells.first; cur_node; cur_node = cur_node->next)
+ {
+ memcpy(&cellinfo, cur_node->data, sizeof(cellinfo));
+ if (status = auth_to_cell(
+ context,
+ cellinfo.cell, cellinfo.realm))
+ somethingswrong++;
+ }
+
+ /* Then, log to all paths in the paths list */
+ for (cur_node = paths.first; cur_node; cur_node = cur_node->next)
+ {
+ if (status = auth_to_path(
+ context,
+ cur_node->data))
+ somethingswrong++;
+ }
+
+ /*
+ * If only one thing was logged to, we'll return the status
+ * of the single call. Otherwise, we'll return a generic
+ * something failed status.
+ */
+ if (somethingswrong && ((cells.nelements + paths.nelements) > 1))
+ status = AKLOG_SOMETHINGSWRONG;
+ }
+
+ if(usev5)
+ krb5_free_context(context);
+
+ exit(status);
+}
git://git.openafs.org / openafs.git / commitdiff