/*- * Copyright (C) 1996 * David L. Nugent. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY DAVID L. NUGENT AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL DAVID L. NUGENT OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * $Id: grupd.c,v 1.1.1.2 1996/12/10 23:58:56 joerg Exp $ */ #include #include #include #include #include #include #include #include #include "pwupd.h" int fmtgrentry(char **buf, int * buflen, struct group * grp, int type) { int i, l; /* * Since a group line is of arbitrary length, * we need to calculate up-front just how long * it will need to be... */ /* groupname : password : gid : */ l = strlen(grp->gr_name) + 1 + strlen(grp->gr_passwd) + 1 + 5 + 1; /* group members + comma separator */ for (i = 0; grp->gr_mem[i] != NULL; i++) { l += strlen(grp->gr_mem[i]) + 1; } l += 2; /* For newline & NUL */ if (extendline(buf, buflen, l) == -1) l = -1; else{ /* * Now we can safely format */ if (type == PWF_STANDARD) l = sprintf(*buf, "%s:*:%ld:", grp->gr_name, (long) grp->gr_gid); else l = sprintf(*buf, "%s:%s:%ld:", grp->gr_name, grp->gr_passwd, (long) grp->gr_gid); /* * List members */ for (i = 0; grp->gr_mem[i] != NULL; i++) { l += sprintf(*buf + l, "%s%s", i ? "," : "", grp->gr_mem[i]); } (*buf)[l++] = '\n'; (*buf)[l] = '\0'; } return l; } int fmtgrent(char **buf, int * buflen, struct group * grp) { return fmtgrentry(buf, buflen, grp, PWF_STANDARD); } static int gr_update(struct group * grp, char const * group, int mode) { int l; char pfx[64]; int grbuflen = 0; char *grbuf = NULL; endgrent(); l = snprintf(pfx, sizeof pfx, "%s:", group); /* * Update the group file */ if (grp != NULL && fmtgrentry(&grbuf, &grbuflen, grp, PWF_PASSWD) == -1) l = -1; else l = fileupdate(_PATH_GROUP, 0644, grbuf, pfx, l, mode); if (grbuf != NULL) free(grbuf); return l; } int addgrent(struct group * grp) { return gr_update(grp, grp->gr_name, UPD_CREATE); } int chggrent(char const * login, struct group * grp) { return gr_update(grp, login, UPD_REPLACE); } int delgrent(struct group * grp) { return gr_update(NULL, grp->gr_name, UPD_DELETE); }