projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| d4653600 KB |
1 | /*- |
| 2 | * Copyright (c) 1990 The Regents of the University of California. | |
| 3 | * All rights reserved. | |
| 4 | * | |
| 5 | * %sccs.include.redist.c% | |
| 6 | */ | |
| 7 | ||
| 8 | #ifndef lint | |
| 9 | static char sccsid[] = "@(#)pw_scan.c 5.1 (Berkeley) %G%"; | |
| 10 | #endif /* not lint */ | |
| 11 | ||
| 12 | /* | |
| 13 | * This module is used to "verify" password entries by chpass(1) and | |
| 14 | * pwd_mkdb(8). | |
| 15 | */ | |
| 16 | ||
| 17 | #include <sys/param.h> | |
| 18 | #include <fcntl.h> | |
| 19 | #include <pwd.h> | |
| 20 | #include <errno.h> | |
| 21 | #include <stdio.h> | |
| 22 | #include <string.h> | |
| 23 | #include <stdlib.h> | |
| 24 | ||
| 25 | extern char *progname; | |
| 26 | ||
| 27 | pw_scan(bp, pw) | |
| 28 | char *bp; | |
| 29 | struct passwd *pw; | |
| 30 | { | |
| 31 | register long id; | |
| 32 | register int root; | |
| 33 | register char *p, *sh; | |
| 34 | char *getusershell(); | |
| 35 | ||
| 36 | if (!(pw->pw_name = strsep(&bp, ":"))) /* login */ | |
| 37 | goto fmt; | |
| 38 | root = !strcmp(pw->pw_name, "root"); | |
| 39 | ||
| 40 | if (!(pw->pw_passwd = strsep(&bp, ":"))) /* passwd */ | |
| 41 | goto fmt; | |
| 42 | ||
| 43 | if (!(p = strsep(&bp, ":"))) /* uid */ | |
| 44 | goto fmt; | |
| 45 | id = atol(p); | |
| 46 | if (root && id) { | |
| 47 | (void)fprintf(stderr, "%s: root uid should be 0", progname); | |
| 48 | return(0); | |
| 49 | } | |
| 50 | if (id > USHRT_MAX) { | |
| 51 | (void)fprintf(stderr, | |
| 52 | "%s: %s > max uid value (%d)", progname, p, USHRT_MAX); | |
| 53 | return(0); | |
| 54 | } | |
| 55 | pw->pw_uid = id; | |
| 56 | ||
| 57 | if (!(p = strsep(&bp, ":"))) /* gid */ | |
| 58 | goto fmt; | |
| 59 | id = atol(p); | |
| 60 | if (id > USHRT_MAX) { | |
| 61 | (void)fprintf(stderr, | |
| 62 | "%s: %s > max gid value (%d)", progname, p, USHRT_MAX); | |
| 63 | return(0); | |
| 64 | } | |
| 65 | pw->pw_gid = id; | |
| 66 | ||
| 67 | pw->pw_class = strsep(&bp, ":"); /* class */ | |
| 68 | if (!(p = strsep(&bp, ":"))) /* change */ | |
| 69 | goto fmt; | |
| 70 | pw->pw_change = atol(p); | |
| 71 | if (!(p = strsep(&bp, ":"))) /* expire */ | |
| 72 | goto fmt; | |
| 73 | pw->pw_expire = atol(p); | |
| 74 | pw->pw_gecos = strsep(&bp, ":"); /* gecos */ | |
| 75 | pw->pw_dir = strsep(&bp, ":"); /* directory */ | |
| 76 | if (!(pw->pw_shell = strsep(&bp, ":"))) /* shell */ | |
| 77 | goto fmt; | |
| 78 | ||
| 79 | p = pw->pw_shell; | |
| 80 | if (root && *p) /* empty == /bin/sh */ | |
| 81 | for (setusershell();;) { | |
| 82 | if (!(sh = getusershell())) { | |
| 83 | (void)fprintf(stderr, | |
| 84 | "%s: warning, unknown root shell\n", | |
| 85 | progname); | |
| 86 | break; | |
| 87 | } | |
| 88 | if (!strcmp(p, sh)) | |
| 89 | break; | |
| 90 | } | |
| 91 | ||
| 92 | if (p = strsep(&bp, ":")) { /* too many */ | |
| 93 | fmt: (void)fprintf(stderr, "%s: corrupted entry\n", progname); | |
| 94 | return(0); | |
| 95 | } | |
| 96 | return(1); | |
| 97 | } |