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author | Felix Fietkau <nbd@openwrt.org> | 2008-12-24 10:42:12 +0000 |
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committer | Felix Fietkau <nbd@openwrt.org> | 2008-12-24 10:42:12 +0000 |
commit | 073a2a82844a0ff3fbe844c9c19be258bfb4d7fc (patch) | |
tree | 91368c1d3b51e419ca42ee0196df3553a19b976e /package/ead/src/tinysrp/t_pw.c | |
parent | dbb49737c14b89d98d06d0173bca40e08d074524 (diff) | |
download | master-187ad058-073a2a82844a0ff3fbe844c9c19be258bfb4d7fc.tar.gz master-187ad058-073a2a82844a0ff3fbe844c9c19be258bfb4d7fc.tar.bz2 master-187ad058-073a2a82844a0ff3fbe844c9c19be258bfb4d7fc.zip |
add the 'ead' package (emergency access daemon),
which can provide remote access to your device, even if the ip
and firewall settings are broken
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@13738 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'package/ead/src/tinysrp/t_pw.c')
-rw-r--r-- | package/ead/src/tinysrp/t_pw.c | 262 |
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 new file mode 100644 index 0000000000..18e929bb79 --- /dev/null +++ b/package/ead/src/tinysrp/t_pw.c @@ -0,0 +1,262 @@ +/* + * 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; +} |