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-rw-r--r--package/ead/src/tinysrp/t_pw.c262
1 files changed, 262 insertions, 0 deletions
diff --git a/package/ead/src/tinysrp/t_pw.c b/package/ead/src/tinysrp/t_pw.c
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+/*
+ * Copyright (c) 1997-2000 The Stanford SRP Authentication Project
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * IN NO EVENT SHALL STANFORD BE LIABLE FOR ANY SPECIAL, INCIDENTAL,
+ * INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND, OR ANY DAMAGES WHATSOEVER
+ * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER OR NOT ADVISED OF
+ * THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF LIABILITY, ARISING OUT
+ * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ * In addition, the following conditions apply:
+ *
+ * 1. Any software that incorporates the SRP authentication technology
+ * must display the following acknowlegment:
+ * "This product uses the 'Secure Remote Password' cryptographic
+ * authentication system developed by Tom Wu (tjw@CS.Stanford.EDU)."
+ *
+ * 2. Any software that incorporates all or part of the SRP distribution
+ * itself must also display the following acknowledgment:
+ * "This product includes software developed by Tom Wu and Eugene
+ * Jhong for the SRP Distribution (http://srp.stanford.edu/srp/)."
+ *
+ * 3. Redistributions in source or binary form must retain an intact copy
+ * of this copyright notice and list of conditions.
+ */
+
+#include "t_defines.h"
+
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif /* HAVE_UNISTD_H */
+
+#include <stdio.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#ifdef USE_HOMEDIR
+#include <pwd.h>
+#endif
+#ifdef WIN32
+#include <io.h>
+#endif
+
+#include "t_pwd.h"
+#include "t_read.h"
+#include "t_sha.h"
+#include "t_server.h"
+
+static struct t_pw * syspw = NULL;
+static struct t_passwd tpass;
+
+_TYPE( struct t_server * )
+t_serveropen(username)
+ const char * username;
+{
+ struct t_passwd * p;
+ p = gettpnam(username);
+ if(p == NULL) {
+ return NULL;
+ } else {
+ return t_serveropenraw(&p->tp, &p->tc);
+ }
+}
+
+
+/* t_openpw(NULL) is deprecated - use settpent()/gettpnam() instead */
+
+_TYPE( struct t_pw * )
+t_openpw(fp)
+ FILE * fp;
+{
+ struct t_pw * tpw;
+ char close_flag = 0;
+
+ if(fp == NULL) { /* Deprecated */
+ if((fp = fopen(DEFAULT_PASSWD, "r")) == NULL)
+ return NULL;
+ close_flag = 1;
+ }
+ else
+ close_flag = 0;
+
+ if((tpw = malloc(sizeof(struct t_pw))) == NULL)
+ return NULL;
+ tpw->instream = fp;
+ tpw->close_on_exit = close_flag;
+ tpw->state = FILE_ONLY;
+
+ return tpw;
+}
+
+_TYPE( struct t_pw * )
+t_openpwbyname(pwname)
+ const char * pwname;
+{
+ FILE * fp;
+ struct t_pw * t;
+
+ if(pwname == NULL) /* Deprecated */
+ return t_openpw(NULL);
+
+ if((fp = fopen(pwname, "r")) == NULL)
+ return NULL;
+
+ t = t_openpw(fp);
+ t->close_on_exit = 1;
+ return t;
+}
+
+_TYPE( void )
+t_closepw(tpw)
+ struct t_pw * tpw;
+{
+ if(tpw->close_on_exit)
+ fclose(tpw->instream);
+ free(tpw);
+}
+
+_TYPE( void )
+t_rewindpw(tpw)
+ struct t_pw * tpw;
+{
+#ifdef ENABLE_YP
+ if(tpw->state == IN_NIS)
+ tpw->state = FILE_NIS;
+#endif
+ rewind(tpw->instream);
+}
+
+#ifdef ENABLE_YP
+static void
+savepwent(tpw, pwent)
+ struct t_pw * tpw;
+ struct t_pwent *pwent;
+{
+ tpw->pebuf.name = tpw->userbuf;
+ tpw->pebuf.password.data = tpw->pwbuf;
+ tpw->pebuf.salt.data = tpw->saltbuf;
+ strcpy(tpw->pebuf.name, pwent->name);
+ tpw->pebuf.password.len = pwent->password.len;
+ memcpy(tpw->pebuf.password.data, pwent->password.data, pwent->password.len);
+ tpw->pebuf.salt.len = pwent->salt.len;
+ memcpy(tpw->pebuf.salt.data, pwent->salt.data, pwent->salt.len);
+ tpw->pebuf.index = pwent->index;
+}
+#endif /* ENABLE_YP */
+
+_TYPE( struct t_pwent * )
+t_getpwbyname(tpw, user)
+ struct t_pw * tpw;
+ const char * user;
+{
+ char indexbuf[16];
+ char passbuf[MAXB64PARAMLEN];
+ char saltstr[MAXB64SALTLEN];
+ char username[MAXUSERLEN];
+#ifdef ENABLE_YP
+ struct t_passwd * nisent;
+#endif
+
+ t_rewindpw(tpw);
+
+ while(t_nextfield(tpw->instream, username, MAXUSERLEN) > 0) {
+#ifdef ENABLE_YP
+ if(tpw->state == FILE_NIS && *username == '+') {
+ if(strlen(username) == 1 || strcmp(user, username+1) == 0) {
+ nisent = _yp_gettpnam(user); /* Entry is +username or + */
+ if(nisent != NULL) {
+ savepwent(tpw, &nisent->tp);
+ return &tpw->pebuf;
+ }
+ }
+ }
+#endif
+ if(strcmp(user, username) == 0)
+ if(t_nextfield(tpw->instream, passbuf, MAXB64PARAMLEN) > 0 &&
+ (tpw->pebuf.password.len = t_fromb64(tpw->pwbuf, passbuf)) > 0 &&
+ t_nextfield(tpw->instream, saltstr, MAXB64SALTLEN) > 0 &&
+ (tpw->pebuf.salt.len = t_fromb64(tpw->saltbuf, saltstr)) > 0 &&
+ t_nextfield(tpw->instream, indexbuf, 16) > 0 &&
+ (tpw->pebuf.index = atoi(indexbuf)) > 0) {
+ strcpy(tpw->userbuf, username);
+ tpw->pebuf.name = tpw->userbuf;
+ tpw->pebuf.password.data = tpw->pwbuf;
+ tpw->pebuf.salt.data = tpw->saltbuf;
+ t_nextline(tpw->instream);
+ return &tpw->pebuf;
+ }
+ if(t_nextline(tpw->instream) < 0)
+ return NULL;
+ }
+ return NULL;
+}
+
+/* System password file accessors */
+
+static int
+pwinit()
+{
+ if(syspw == NULL) {
+ if((syspw = t_openpwbyname(DEFAULT_PASSWD)) == NULL)
+ return -1;
+ syspw->state = FILE_NIS;
+ }
+ return 0;
+}
+
+static void
+pwsetup(out, tpwd, tcnf)
+ struct t_passwd * out;
+ struct t_pwent * tpwd;
+ struct t_confent * tcnf;
+{
+ out->tp.name = tpwd->name;
+ out->tp.password.len = tpwd->password.len;
+ out->tp.password.data = tpwd->password.data;
+ out->tp.salt.len = tpwd->salt.len;
+ out->tp.salt.data = tpwd->salt.data;
+ out->tp.index = tpwd->index;
+
+ out->tc.index = tcnf->index;
+ out->tc.modulus.len = tcnf->modulus.len;
+ out->tc.modulus.data = tcnf->modulus.data;
+ out->tc.generator.len = tcnf->generator.len;
+ out->tc.generator.data = tcnf->generator.data;
+}
+
+_TYPE( struct t_passwd * )
+gettpnam
+(user)
+ const char * user;
+{
+ struct t_pwent * tpptr;
+ struct t_confent * tcptr;
+
+ if(pwinit() < 0)
+ return NULL;
+ tpptr = t_getpwbyname(syspw, user);
+ if(tpptr == NULL)
+ return NULL;
+ tcptr =
+ gettcid
+ (tpptr->index);
+ if(tcptr == NULL)
+ return NULL;
+ pwsetup(&tpass, tpptr, tcptr);
+ return &tpass;
+}
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