164 lines
4.1 KiB
C
164 lines
4.1 KiB
C
/*
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* Copyright 1990 - 1994, Julianne Frances Haugh
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of Julianne F. Haugh nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY JULIE HAUGH AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL JULIE HAUGH OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <config.h>
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#include "rcsid.h"
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RCSID("$Id: pwpack.c,v 1.4 1998/04/16 19:57:42 marekm Exp $")
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#include <sys/types.h>
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#include "defines.h"
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#include <stdio.h>
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#include <pwd.h>
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/*
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* pw_pack - convert a (struct pwd) to a packed record
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* WARNING: buf must be large enough, no check for overrun!
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*/
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int
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pw_pack(const struct passwd *passwd, char *buf)
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{
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char *cp;
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cp = buf;
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strcpy (cp, passwd->pw_name);
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cp += strlen (cp) + 1;
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strcpy (cp, passwd->pw_passwd);
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#ifdef ATT_AGE
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if (passwd->pw_age[0]) {
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*cp++ = ',';
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strcat (cp, passwd->pw_age);
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}
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#endif
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cp += strlen (cp) + 1;
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memcpy (cp, (const char *) &passwd->pw_uid, sizeof passwd->pw_uid);
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cp += sizeof passwd->pw_uid;
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memcpy (cp, (const char *) &passwd->pw_gid, sizeof passwd->pw_gid);
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cp += sizeof passwd->pw_gid;
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#ifdef BSD_QUOTA
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memcpy (cp, (const char *) &passwd->pw_quota, sizeof passwd->pw_quota);
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cp += sizeof passwd->pw_quota;
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#endif
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#ifdef ATT_COMMENT
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if (passwd->pw_comment) {
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strcpy (cp, passwd->pw_comment);
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cp += strlen (cp) + 1;
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} else
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*cp++ = '\0';
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#endif
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strcpy (cp, passwd->pw_gecos);
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cp += strlen (cp) + 1;
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strcpy (cp, passwd->pw_dir);
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cp += strlen (cp) + 1;
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strcpy (cp, passwd->pw_shell);
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cp += strlen (cp) + 1;
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return cp - buf;
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}
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/*
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* pw_unpack - convert a packed (struct pwd) record to a (struct pwd)
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*/
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int
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pw_unpack(char *buf, int len, struct passwd *passwd)
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{
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char *org = buf;
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#ifdef ATT_AGE
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char *cp;
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#endif
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memzero(passwd, sizeof *passwd);
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passwd->pw_name = buf;
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buf += strlen (buf) + 1;
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if (buf - org > len)
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return -1;
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passwd->pw_passwd = buf;
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buf += strlen (buf) + 1;
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if (buf - org > len)
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return -1;
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#ifdef ATT_AGE
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if (cp = strchr (passwd->pw_passwd, ',')) {
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*cp++ = '\0';
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passwd->pw_age = cp;
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} else
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passwd->pw_age = "";
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#endif
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memcpy ((void *) &passwd->pw_uid, (void *) buf, sizeof passwd->pw_uid);
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buf += sizeof passwd->pw_uid;
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if (buf - org > len)
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return -1;
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memcpy ((void *) &passwd->pw_gid, (void *) buf, sizeof passwd->pw_gid);
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buf += sizeof passwd->pw_gid;
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if (buf - org > len)
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return -1;
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#ifdef BSD_QUOTA
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memcpy ((void *) &passwd->pw_quota, (void *) buf,
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sizeof passwd->pw_quota);
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buf += sizeof passwd->pw_quota;
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if (buf - org > len)
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return -1;
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#endif
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#ifdef ATT_COMMENT
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passwd->pw_comment = buf;
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buf += strlen (buf) + 1;
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if (buf - org > len)
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return -1;
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#endif
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passwd->pw_gecos = buf;
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buf += strlen (buf) + 1;
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if (buf - org > len)
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return -1;
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passwd->pw_dir = buf;
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buf += strlen (buf) + 1;
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if (buf - org > len)
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return -1;
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passwd->pw_shell = buf;
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buf += strlen (buf) + 1;
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if (buf - org > len)
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return -1;
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return 0;
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}
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