Annotation of src/usr.bin/chpass/edit.c, Revision 1.1
1.1 ! deraadt 1: /* $NetBSD: edit.c,v 1.5 1995/07/28 07:03:41 phil Exp $ */
! 2:
! 3: /*-
! 4: * Copyright (c) 1990, 1993, 1994
! 5: * The Regents of the University of California. All rights reserved.
! 6: *
! 7: * Redistribution and use in source and binary forms, with or without
! 8: * modification, are permitted provided that the following conditions
! 9: * are met:
! 10: * 1. Redistributions of source code must retain the above copyright
! 11: * notice, this list of conditions and the following disclaimer.
! 12: * 2. Redistributions in binary form must reproduce the above copyright
! 13: * notice, this list of conditions and the following disclaimer in the
! 14: * documentation and/or other materials provided with the distribution.
! 15: * 3. All advertising materials mentioning features or use of this software
! 16: * must display the following acknowledgement:
! 17: * This product includes software developed by the University of
! 18: * California, Berkeley and its contributors.
! 19: * 4. Neither the name of the University nor the names of its contributors
! 20: * may be used to endorse or promote products derived from this software
! 21: * without specific prior written permission.
! 22: *
! 23: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
! 24: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 25: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 26: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
! 27: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 28: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 29: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 30: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 31: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 32: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 33: * SUCH DAMAGE.
! 34: */
! 35:
! 36: #ifndef lint
! 37: #if 0
! 38: static char sccsid[] = "@(#)edit.c 8.3 (Berkeley) 4/2/94";
! 39: #else
! 40: static char rcsid[] = "$NetBSD: edit.c,v 1.5 1995/07/28 07:03:41 phil Exp $";
! 41: #endif
! 42: #endif /* not lint */
! 43:
! 44: #include <sys/param.h>
! 45: #include <sys/stat.h>
! 46:
! 47: #include <ctype.h>
! 48: #include <err.h>
! 49: #include <errno.h>
! 50: #include <paths.h>
! 51: #include <pwd.h>
! 52: #include <stdio.h>
! 53: #include <stdlib.h>
! 54: #include <string.h>
! 55: #include <unistd.h>
! 56:
! 57: #include <pw_scan.h>
! 58: #include <pw_util.h>
! 59:
! 60: #include "chpass.h"
! 61:
! 62: extern char *tempname;
! 63:
! 64: void
! 65: edit(pw)
! 66: struct passwd *pw;
! 67: {
! 68: struct stat begin, end;
! 69:
! 70: for (;;) {
! 71: if (stat(tempname, &begin))
! 72: pw_error(tempname, 1, 1);
! 73: pw_edit(1);
! 74: if (stat(tempname, &end))
! 75: pw_error(tempname, 1, 1);
! 76: if (begin.st_mtime == end.st_mtime) {
! 77: warnx("no changes made");
! 78: pw_error(NULL, 0, 0);
! 79: }
! 80: if (verify(pw))
! 81: break;
! 82: pw_prompt();
! 83: }
! 84: }
! 85:
! 86: /*
! 87: * display --
! 88: * print out the file for the user to edit; strange side-effect:
! 89: * set conditional flag if the user gets to edit the shell.
! 90: */
! 91: void
! 92: display(fd, pw)
! 93: int fd;
! 94: struct passwd *pw;
! 95: {
! 96: FILE *fp;
! 97: char *bp, *p, *ttoa();
! 98:
! 99: if (!(fp = fdopen(fd, "w")))
! 100: pw_error(tempname, 1, 1);
! 101:
! 102: (void)fprintf(fp,
! 103: "#Changing user database information for %s.\n", pw->pw_name);
! 104: if (!uid) {
! 105: (void)fprintf(fp, "Login: %s\n", pw->pw_name);
! 106: (void)fprintf(fp, "Password: %s\n", pw->pw_passwd);
! 107: (void)fprintf(fp, "Uid [#]: %d\n", pw->pw_uid);
! 108: (void)fprintf(fp, "Gid [# or name]: %d\n", pw->pw_gid);
! 109: (void)fprintf(fp, "Change [month day year]: %s\n",
! 110: ttoa(pw->pw_change));
! 111: (void)fprintf(fp, "Expire [month day year]: %s\n",
! 112: ttoa(pw->pw_expire));
! 113: (void)fprintf(fp, "Class: %s\n", pw->pw_class);
! 114: (void)fprintf(fp, "Home directory: %s\n", pw->pw_dir);
! 115: (void)fprintf(fp, "Shell: %s\n",
! 116: *pw->pw_shell ? pw->pw_shell : _PATH_BSHELL);
! 117: }
! 118: /* Only admin can change "restricted" shells. */
! 119: else if (ok_shell(pw->pw_shell))
! 120: /*
! 121: * Make shell a restricted field. Ugly with a
! 122: * necklace, but there's not much else to do.
! 123: */
! 124: (void)fprintf(fp, "Shell: %s\n",
! 125: *pw->pw_shell ? pw->pw_shell : _PATH_BSHELL);
! 126: else
! 127: list[E_SHELL].restricted = 1;
! 128: bp = pw->pw_gecos;
! 129: p = strsep(&bp, ",");
! 130: (void)fprintf(fp, "Full Name: %s\n", p ? p : "");
! 131: p = strsep(&bp, ",");
! 132: (void)fprintf(fp, "Location: %s\n", p ? p : "");
! 133: p = strsep(&bp, ",");
! 134: (void)fprintf(fp, "Office Phone: %s\n", p ? p : "");
! 135: p = strsep(&bp, ",");
! 136: (void)fprintf(fp, "Home Phone: %s\n", p ? p : "");
! 137:
! 138: (void)fchown(fd, getuid(), getgid());
! 139: (void)fclose(fp);
! 140: }
! 141:
! 142: int
! 143: verify(pw)
! 144: struct passwd *pw;
! 145: {
! 146: ENTRY *ep;
! 147: char *p;
! 148: struct stat sb;
! 149: FILE *fp;
! 150: int len;
! 151: static char buf[LINE_MAX];
! 152:
! 153: if (!(fp = fopen(tempname, "r")))
! 154: pw_error(tempname, 1, 1);
! 155: if (fstat(fileno(fp), &sb))
! 156: pw_error(tempname, 1, 1);
! 157: if (sb.st_size == 0) {
! 158: warnx("corrupted temporary file");
! 159: goto bad;
! 160: }
! 161: while (fgets(buf, sizeof(buf), fp)) {
! 162: if (!buf[0] || buf[0] == '#')
! 163: continue;
! 164: if (!(p = strchr(buf, '\n'))) {
! 165: warnx("line too long");
! 166: goto bad;
! 167: }
! 168: *p = '\0';
! 169: for (ep = list;; ++ep) {
! 170: if (!ep->prompt) {
! 171: warnx("unrecognized field");
! 172: goto bad;
! 173: }
! 174: if (!strncasecmp(buf, ep->prompt, ep->len)) {
! 175: if (ep->restricted && uid) {
! 176: warnx(
! 177: "you may not change the %s field",
! 178: ep->prompt);
! 179: goto bad;
! 180: }
! 181: if (!(p = strchr(buf, ':'))) {
! 182: warnx("line corrupted");
! 183: goto bad;
! 184: }
! 185: while (isspace(*++p));
! 186: if (ep->except && strpbrk(p, ep->except)) {
! 187: warnx(
! 188: "illegal character in the \"%s\" field",
! 189: ep->prompt);
! 190: goto bad;
! 191: }
! 192: if ((ep->func)(p, pw, ep)) {
! 193: bad: (void)fclose(fp);
! 194: return (0);
! 195: }
! 196: break;
! 197: }
! 198: }
! 199: }
! 200: (void)fclose(fp);
! 201:
! 202: /* Build the gecos field. */
! 203: len = strlen(list[E_NAME].save) + strlen(list[E_BPHONE].save) +
! 204: strlen(list[E_HPHONE].save) + strlen(list[E_LOCATE].save) + 4;
! 205: if (!(p = malloc(len)))
! 206: err(1, NULL);
! 207: (void)sprintf(pw->pw_gecos = p, "%s,%s,%s,%s", list[E_NAME].save,
! 208: list[E_LOCATE].save, list[E_BPHONE].save, list[E_HPHONE].save);
! 209:
! 210: if (snprintf(buf, sizeof(buf),
! 211: "%s:%s:%d:%d:%s:%ld:%ld:%s:%s:%s",
! 212: pw->pw_name, pw->pw_passwd, pw->pw_uid, pw->pw_gid, pw->pw_class,
! 213: pw->pw_change, pw->pw_expire, pw->pw_gecos, pw->pw_dir,
! 214: pw->pw_shell) >= sizeof(buf)) {
! 215: warnx("entries too long");
! 216: return (0);
! 217: }
! 218: return (pw_scan(buf, pw, (int *)NULL));
! 219: }
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