diff options
Diffstat (limited to 'pw/grupd.c')
| -rw-r--r-- | pw/grupd.c | 171 |
1 files changed, 171 insertions, 0 deletions
diff --git a/pw/grupd.c b/pw/grupd.c new file mode 100644 index 0000000..edff76d --- /dev/null +++ b/pw/grupd.c @@ -0,0 +1,171 @@ +/*- + * 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. + */ + +#ifndef lint +static const char rcsid[] = + "$FreeBSD$"; +#endif /* not lint */ + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> +#include <stdarg.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <sys/param.h> + +#include "pwupd.h" + +static char * grpath = _PATH_PWD; + +int +setgrdir(const char * dir) +{ + if (dir == NULL) + return -1; + else { + char * d = malloc(strlen(dir)+1); + if (d == NULL) + return -1; + grpath = strcpy(d, dir); + } + return 0; +} + +char * +getgrpath(const char * file) +{ + static char pathbuf[MAXPATHLEN]; + + snprintf(pathbuf, sizeof pathbuf, "%s/%s", grpath, file); + return pathbuf; +} + +int +grdb(char *arg,...) +{ + /* + * This is a stub for now, but maybe eventually be functional + * if ever an indexed version of /etc/groups is implemented. + */ + arg=arg; + return 0; +} + +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(getgrpath(_GROUP), 0644, grbuf, pfx, l, mode); + if (l == 0) + l = grdb(NULL); + } + 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); +} |