1 /*- 2 * Copyright (c) 1990, 1993, 1994 3 * The Regents of the University of California. All rights reserved. 4 * 5 * %sccs.include.redist.c% 6 */ 7 8 #ifndef lint 9 static char sccsid[] = "@(#)pw_copy.c 8.4 (Berkeley) 04/02/94"; 10 #endif /* not lint */ 11 12 /* 13 * This module is used to copy the master password file, replacing a single 14 * record, by chpass(1) and passwd(1). 15 */ 16 17 #include <err.h> 18 #include <pwd.h> 19 #include <stdio.h> 20 #include <string.h> 21 22 #include <pw_util.h> 23 #include "pw_copy.h" 24 25 extern char *tempname; 26 27 void 28 pw_copy(ffd, tfd, pw) 29 int ffd, tfd; 30 struct passwd *pw; 31 { 32 FILE *from, *to; 33 int done; 34 char *p, buf[8192]; 35 36 if (!(from = fdopen(ffd, "r"))) 37 pw_error(_PATH_MASTERPASSWD, 1, 1); 38 if (!(to = fdopen(tfd, "w"))) 39 pw_error(tempname, 1, 1); 40 41 for (done = 0; fgets(buf, sizeof(buf), from);) { 42 if (!strchr(buf, '\n')) { 43 warnx("%s: line too long", _PATH_MASTERPASSWD); 44 pw_error(NULL, 0, 1); 45 } 46 if (done) { 47 (void)fprintf(to, "%s", buf); 48 if (ferror(to)) 49 goto err; 50 continue; 51 } 52 if (!(p = strchr(buf, ':'))) { 53 warnx("%s: corrupted entry", _PATH_MASTERPASSWD); 54 pw_error(NULL, 0, 1); 55 } 56 *p = '\0'; 57 if (strcmp(buf, pw->pw_name)) { 58 *p = ':'; 59 (void)fprintf(to, "%s", buf); 60 if (ferror(to)) 61 goto err; 62 continue; 63 } 64 (void)fprintf(to, "%s:%s:%d:%d:%s:%ld:%ld:%s:%s:%s\n", 65 pw->pw_name, pw->pw_passwd, pw->pw_uid, pw->pw_gid, 66 pw->pw_class, pw->pw_change, pw->pw_expire, pw->pw_gecos, 67 pw->pw_dir, pw->pw_shell); 68 done = 1; 69 if (ferror(to)) 70 goto err; 71 } 72 if (!done) 73 (void)fprintf(to, "%s:%s:%d:%d:%s:%ld:%ld:%s:%s:%s\n", 74 pw->pw_name, pw->pw_passwd, pw->pw_uid, pw->pw_gid, 75 pw->pw_class, pw->pw_change, pw->pw_expire, pw->pw_gecos, 76 pw->pw_dir, pw->pw_shell); 77 78 if (ferror(to)) 79 err: pw_error(NULL, 1, 1); 80 (void)fclose(to); 81 } 82