diff options
| -rw-r--r-- | pw/pw.h | 1 | ||||
| -rw-r--r-- | pw/pw_conf.c | 503 |
2 files changed, 504 insertions, 0 deletions
@@ -26,6 +26,7 @@ * $FreeBSD$ */ +#define _WITH_GETLINE #include <stdio.h> #include <stdlib.h> #include <string.h> diff --git a/pw/pw_conf.c b/pw/pw_conf.c new file mode 100644 index 0000000..1289b3e --- /dev/null +++ b/pw/pw_conf.c @@ -0,0 +1,503 @@ +/*- + * 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 <string.h> +#include <ctype.h> +#include <fcntl.h> + +#include "pw.h" + +#define debugging 0 + +enum { + _UC_NONE, + _UC_DEFAULTPWD, + _UC_REUSEUID, + _UC_REUSEGID, + _UC_NISPASSWD, + _UC_DOTDIR, + _UC_NEWMAIL, + _UC_LOGFILE, + _UC_HOMEROOT, + _UC_HOMEMODE, + _UC_SHELLPATH, + _UC_SHELLS, + _UC_DEFAULTSHELL, + _UC_DEFAULTGROUP, + _UC_EXTRAGROUPS, + _UC_DEFAULTCLASS, + _UC_MINUID, + _UC_MAXUID, + _UC_MINGID, + _UC_MAXGID, + _UC_EXPIRE, + _UC_PASSWORD, + _UC_FIELDS +}; + +static char bourne_shell[] = "sh"; + +static char *system_shells[_UC_MAXSHELLS] = +{ + bourne_shell, + "csh", + "tcsh" +}; + +static char const *booltrue[] = +{ + "yes", "true", "1", "on", NULL +}; +static char const *boolfalse[] = +{ + "no", "false", "0", "off", NULL +}; + +static struct userconf config = +{ + 0, /* Default password for new users? (nologin) */ + 0, /* Reuse uids? */ + 0, /* Reuse gids? */ + NULL, /* NIS version of the passwd file */ + "/usr/share/skel", /* Where to obtain skeleton files */ + NULL, /* Mail to send to new accounts */ + "/var/log/userlog", /* Where to log changes */ + "/home", /* Where to create home directory */ + _DEF_DIRMODE, /* Home directory perms, modified by umask */ + "/bin", /* Where shells are located */ + system_shells, /* List of shells (first is default) */ + bourne_shell, /* Default shell */ + NULL, /* Default group name */ + NULL, /* Default (additional) groups */ + NULL, /* Default login class */ + 1000, 32000, /* Allowed range of uids */ + 1000, 32000, /* Allowed range of gids */ + 0, /* Days until account expires */ + 0, /* Days until password expires */ + 0 /* size of default_group array */ +}; + +static char const *comments[_UC_FIELDS] = +{ + "#\n# pw.conf - user/group configuration defaults\n#\n", + "\n# Password for new users? no=nologin yes=loginid none=blank random=random\n", + "\n# Reuse gaps in uid sequence? (yes or no)\n", + "\n# Reuse gaps in gid sequence? (yes or no)\n", + "\n# Path to the NIS passwd file (blank or 'no' for none)\n", + "\n# Obtain default dotfiles from this directory\n", + "\n# Mail this file to new user (/etc/newuser.msg or no)\n", + "\n# Log add/change/remove information in this file\n", + "\n# Root directory in which $HOME directory is created\n", + "\n# Mode for the new $HOME directory, will be modified by umask\n", + "\n# Colon separated list of directories containing valid shells\n", + "\n# Comma separated list of available shells (without paths)\n", + "\n# Default shell (without path)\n", + "\n# Default group (leave blank for new group per user)\n", + "\n# Extra groups for new users\n", + "\n# Default login class for new users\n", + "\n# Range of valid default user ids\n", + NULL, + "\n# Range of valid default group ids\n", + NULL, + "\n# Days after which account expires (0=disabled)\n", + "\n# Days after which password expires (0=disabled)\n" +}; + +static char const *kwds[] = +{ + "", + "defaultpasswd", + "reuseuids", + "reusegids", + "nispasswd", + "skeleton", + "newmail", + "logfile", + "home", + "homemode", + "shellpath", + "shells", + "defaultshell", + "defaultgroup", + "extragroups", + "defaultclass", + "minuid", + "maxuid", + "mingid", + "maxgid", + "expire_days", + "password_days", + NULL +}; + +static char * +unquote(char const * str) +{ + if (str && (*str == '"' || *str == '\'')) { + char *p = strchr(str + 1, *str); + + if (p != NULL) + *p = '\0'; + return (char *) (*++str ? str : NULL); + } + return (char *) str; +} + +int +boolean_val(char const * str, int dflt) +{ + if ((str = unquote(str)) != NULL) { + int i; + + for (i = 0; booltrue[i]; i++) + if (strcmp(str, booltrue[i]) == 0) + return 1; + for (i = 0; boolfalse[i]; i++) + if (strcmp(str, boolfalse[i]) == 0) + return 0; + + /* + * Special cases for defaultpassword + */ + if (strcmp(str, "random") == 0) + return -1; + if (strcmp(str, "none") == 0) + return -2; + } + return dflt; +} + +char const * +boolean_str(int val) +{ + if (val == -1) + return "random"; + else if (val == -2) + return "none"; + else + return val ? booltrue[0] : boolfalse[0]; +} + +char * +newstr(char const * p) +{ + char *q = NULL; + + if ((p = unquote(p)) != NULL) { + int l = strlen(p) + 1; + + if ((q = malloc(l)) != NULL) + memcpy(q, p, l); + } + return q; +} + +#define LNBUFSZ 1024 + + +struct userconf * +read_userconfig(char const * file) +{ + FILE *fp; + char *buf, *p; + size_t linecap; + ssize_t linelen; + + buf = NULL; + linecap = 0; + + extendarray(&config.groups, &config.numgroups, 200); + memset(config.groups, 0, config.numgroups * sizeof(char *)); + if (file == NULL) + file = _PATH_PW_CONF; + + if ((fp = fopen(file, "r")) != NULL) { + while ((linelen = getline(&buf, &linecap, fp)) > 0) { + if (*buf && (p = strtok(buf, " \t\r\n=")) != NULL && *p != '#') { + static char const toks[] = " \t\r\n,="; + char *q = strtok(NULL, toks); + int i = 0; + mode_t *modeset; + + while (i < _UC_FIELDS && strcmp(p, kwds[i]) != 0) + ++i; +#if debugging + if (i == _UC_FIELDS) + printf("Got unknown kwd `%s' val=`%s'\n", p, q ? q : ""); + else + printf("Got kwd[%s]=%s\n", p, q); +#endif + switch (i) { + case _UC_DEFAULTPWD: + config.default_password = boolean_val(q, 1); + break; + case _UC_REUSEUID: + config.reuse_uids = boolean_val(q, 0); + break; + case _UC_REUSEGID: + config.reuse_gids = boolean_val(q, 0); + break; + case _UC_NISPASSWD: + config.nispasswd = (q == NULL || !boolean_val(q, 1)) + ? NULL : newstr(q); + break; + case _UC_DOTDIR: + config.dotdir = (q == NULL || !boolean_val(q, 1)) + ? NULL : newstr(q); + break; + case _UC_NEWMAIL: + config.newmail = (q == NULL || !boolean_val(q, 1)) + ? NULL : newstr(q); + break; + case _UC_LOGFILE: + config.logfile = (q == NULL || !boolean_val(q, 1)) + ? NULL : newstr(q); + break; + case _UC_HOMEROOT: + config.home = (q == NULL || !boolean_val(q, 1)) + ? "/home" : newstr(q); + break; + case _UC_HOMEMODE: + modeset = setmode(q); + config.homemode = (q == NULL || !boolean_val(q, 1)) + ? _DEF_DIRMODE : getmode(modeset, _DEF_DIRMODE); + free(modeset); + break; + case _UC_SHELLPATH: + config.shelldir = (q == NULL || !boolean_val(q, 1)) + ? "/bin" : newstr(q); + break; + case _UC_SHELLS: + for (i = 0; i < _UC_MAXSHELLS && q != NULL; i++, q = strtok(NULL, toks)) + system_shells[i] = newstr(q); + if (i > 0) + while (i < _UC_MAXSHELLS) + system_shells[i++] = NULL; + break; + case _UC_DEFAULTSHELL: + config.shell_default = (q == NULL || !boolean_val(q, 1)) + ? (char *) bourne_shell : newstr(q); + break; + case _UC_DEFAULTGROUP: + q = unquote(q); + config.default_group = (q == NULL || !boolean_val(q, 1) || GETGRNAM(q) == NULL) + ? NULL : newstr(q); + break; + case _UC_EXTRAGROUPS: + for (i = 0; q != NULL; q = strtok(NULL, toks)) { + if (extendarray(&config.groups, &config.numgroups, i + 2) != -1) + config.groups[i++] = newstr(q); + } + if (i > 0) + while (i < config.numgroups) + config.groups[i++] = NULL; + break; + case _UC_DEFAULTCLASS: + config.default_class = (q == NULL || !boolean_val(q, 1)) + ? NULL : newstr(q); + break; + case _UC_MINUID: + if ((q = unquote(q)) != NULL && isdigit(*q)) + config.min_uid = (uid_t) atol(q); + break; + case _UC_MAXUID: + if ((q = unquote(q)) != NULL && isdigit(*q)) + config.max_uid = (uid_t) atol(q); + break; + case _UC_MINGID: + if ((q = unquote(q)) != NULL && isdigit(*q)) + config.min_gid = (gid_t) atol(q); + break; + case _UC_MAXGID: + if ((q = unquote(q)) != NULL && isdigit(*q)) + config.max_gid = (gid_t) atol(q); + break; + case _UC_EXPIRE: + if ((q = unquote(q)) != NULL && isdigit(*q)) + config.expire_days = atoi(q); + break; + case _UC_PASSWORD: + if ((q = unquote(q)) != NULL && isdigit(*q)) + config.password_days = atoi(q); + break; + case _UC_FIELDS: + case _UC_NONE: + break; + } + } + } + if (linecap > 0) + free(buf); + fclose(fp); + } + return &config; +} + + +int +write_userconfig(char const * file) +{ + int fd; + + if (file == NULL) + file = _PATH_PW_CONF; + + if ((fd = open(file, O_CREAT | O_RDWR | O_TRUNC | O_EXLOCK, 0644)) != -1) { + FILE *fp; + + if ((fp = fdopen(fd, "w")) == NULL) + close(fd); + else { + int i, j, k; + int len = LNBUFSZ; + char *buf = malloc(len); + + for (i = _UC_NONE; i < _UC_FIELDS; i++) { + int quote = 1; + char const *val = buf; + + *buf = '\0'; + switch (i) { + case _UC_DEFAULTPWD: + val = boolean_str(config.default_password); + break; + case _UC_REUSEUID: + val = boolean_str(config.reuse_uids); + break; + case _UC_REUSEGID: + val = boolean_str(config.reuse_gids); + break; + case _UC_NISPASSWD: + val = config.nispasswd ? config.nispasswd : ""; + quote = 0; + break; + case _UC_DOTDIR: + val = config.dotdir ? config.dotdir : boolean_str(0); + break; + case _UC_NEWMAIL: + val = config.newmail ? config.newmail : boolean_str(0); + break; + case _UC_LOGFILE: + val = config.logfile ? config.logfile : boolean_str(0); + break; + case _UC_HOMEROOT: + val = config.home; + break; + case _UC_HOMEMODE: + sprintf(buf, "%04o", config.homemode); + quote = 0; + break; + case _UC_SHELLPATH: + val = config.shelldir; + break; + case _UC_SHELLS: + for (j = k = 0; j < _UC_MAXSHELLS && system_shells[j] != NULL; j++) { + char lbuf[64]; + int l = snprintf(lbuf, sizeof lbuf, "%s\"%s\"", k ? "," : "", system_shells[j]); + if (l < 0) + l = 0; + if (l + k + 1 < len || extendline(&buf, &len, len + LNBUFSZ) != -1) { + strcpy(buf + k, lbuf); + k += l; + } + } + quote = 0; + break; + case _UC_DEFAULTSHELL: + val = config.shell_default ? config.shell_default : bourne_shell; + break; + case _UC_DEFAULTGROUP: + val = config.default_group ? config.default_group : ""; + break; + case _UC_EXTRAGROUPS: + extendarray(&config.groups, &config.numgroups, 200); + for (j = k = 0; j < config.numgroups && config.groups[j] != NULL; j++) { + char lbuf[64]; + int l = snprintf(lbuf, sizeof lbuf, "%s\"%s\"", k ? "," : "", config.groups[j]); + if (l < 0) + l = 0; + if (l + k + 1 < len || extendline(&buf, &len, len + 1024) != -1) { + strcpy(buf + k, lbuf); + k += l; + } + } + quote = 0; + break; + case _UC_DEFAULTCLASS: + val = config.default_class ? config.default_class : ""; + break; + case _UC_MINUID: + sprintf(buf, "%lu", (unsigned long) config.min_uid); + quote = 0; + break; + case _UC_MAXUID: + sprintf(buf, "%lu", (unsigned long) config.max_uid); + quote = 0; + break; + case _UC_MINGID: + sprintf(buf, "%lu", (unsigned long) config.min_gid); + quote = 0; + break; + case _UC_MAXGID: + sprintf(buf, "%lu", (unsigned long) config.max_gid); + quote = 0; + break; + case _UC_EXPIRE: + sprintf(buf, "%d", config.expire_days); + quote = 0; + break; + case _UC_PASSWORD: + sprintf(buf, "%d", config.password_days); + quote = 0; + break; + case _UC_NONE: + break; + } + + if (comments[i]) + fputs(comments[i], fp); + + if (*kwds[i]) { + if (quote) + fprintf(fp, "%s = \"%s\"\n", kwds[i], val); + else + fprintf(fp, "%s = %s\n", kwds[i], val); +#if debugging + printf("WROTE: %s = %s\n", kwds[i], val); +#endif + } + } + free(buf); + return fclose(fp) != EOF; + } + } + return 0; +} |