Use an MD5 checksum to test for file changes; the previous method
of using file mtimes could result in chpasss(1) erroneously detecting that no changes were made for non-interactive edits. PR: 4238 Reported by: Jens Schweikhardt <schweikh@noc.dfn.de> Submitted by: Daniel Hagan <dhagan@cs.vt.edu>
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Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=59166
@ -27,8 +27,8 @@ COPTS+= -DYP -I. -I${.CURDIR}/../../libexec/ypxfr \
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#Some people need this, uncomment to activate
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#COPTS+= -DRESTRICT_FULLNAME_CHANGE
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DPADD= ${LIBRPCSVC} ${LIBCRYPT}
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LDADD+= -lrpcsvc -lcrypt
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DPADD= ${LIBRPCSVC} ${LIBCRYPT} ${LIBMD}
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LDADD+= -lrpcsvc -lcrypt -lmd
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CLEANFILES= ${GENSRCS}
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@ -43,6 +43,7 @@ static const char sccsid[] = "@(#)edit.c 8.3 (Berkeley) 4/2/94";
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#include <ctype.h>
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#include <err.h>
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#include <errno.h>
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#include <md5.h>
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#include <paths.h>
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#include <pwd.h>
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#include <stdio.h>
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@ -65,17 +66,23 @@ edit(pw)
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struct passwd *pw;
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{
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struct stat begin, end;
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char *begin_sum, *end_sum;
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for (;;) {
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if (stat(tempname, &begin))
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pw_error(tempname, 1, 1);
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begin_sum = MD5File(tempname, (char *)NULL);
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pw_edit(1);
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if (stat(tempname, &end))
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pw_error(tempname, 1, 1);
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if (begin.st_mtime == end.st_mtime) {
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end_sum = MD5File(tempname, (char *)NULL);
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if ((begin.st_mtime == end.st_mtime) &&
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(strcmp(begin_sum, end_sum) == 0)) {
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warnx("no changes made");
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pw_error(NULL, 0, 0);
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}
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free(begin_sum);
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free(end_sum);
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if (verify(pw))
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break;
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pw_prompt();
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