]>
Commit | Line | Data |
---|---|---|
53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
b1d4f8e1 LP |
2 | #pragma once |
3 | ||
100d5f6e | 4 | #include <grp.h> |
66a5b5ce | 5 | #if ENABLE_GSHADOW |
100d5f6e | 6 | #include <gshadow.h> |
66a5b5ce | 7 | #endif |
100d5f6e FB |
8 | #include <pwd.h> |
9 | #include <shadow.h> | |
b1d4f8e1 | 10 | #include <stdbool.h> |
61755fda | 11 | #include <stdint.h> |
71d35b6b | 12 | #include <sys/types.h> |
ccabee0d | 13 | #include <unistd.h> |
b1d4f8e1 LP |
14 | |
15 | bool uid_is_valid(uid_t uid); | |
16 | ||
17 | static inline bool gid_is_valid(gid_t gid) { | |
18 | return uid_is_valid((uid_t) gid); | |
19 | } | |
20 | ||
21 | int parse_uid(const char *s, uid_t* ret_uid); | |
22 | ||
23 | static inline int parse_gid(const char *s, gid_t *ret_gid) { | |
24 | return parse_uid(s, (uid_t*) ret_gid); | |
25 | } | |
26 | ||
b1d4f8e1 LP |
27 | char* getlogname_malloc(void); |
28 | char* getusername_malloc(void); | |
29 | ||
fafff8f1 | 30 | typedef enum UserCredsFlags { |
43ad3ad7 ZJS |
31 | USER_CREDS_PREFER_NSS = 1 << 0, /* if set, only synthesize user records if database lacks them. Normally we bypass the userdb entirely for the records we can synthesize */ |
32 | USER_CREDS_ALLOW_MISSING = 1 << 1, /* if a numeric UID string is resolved, be OK if there's no record for it */ | |
33 | USER_CREDS_CLEAN = 1 << 2, /* try to clean up shell and home fields with invalid data */ | |
fafff8f1 LP |
34 | } UserCredsFlags; |
35 | ||
36 | int get_user_creds(const char **username, uid_t *uid, gid_t *gid, const char **home, const char **shell, UserCredsFlags flags); | |
37 | int get_group_creds(const char **groupname, gid_t *gid, UserCredsFlags flags); | |
b1d4f8e1 LP |
38 | |
39 | char* uid_to_name(uid_t uid); | |
40 | char* gid_to_name(gid_t gid); | |
41 | ||
42 | int in_gid(gid_t gid); | |
43 | int in_group(const char *name); | |
44 | ||
45 | int get_home_dir(char **ret); | |
46 | int get_shell(char **_ret); | |
47 | ||
48 | int reset_uid_gid(void); | |
e929bee0 LP |
49 | |
50 | int take_etc_passwd_lock(const char *root); | |
ee104e11 LP |
51 | |
52 | #define UID_INVALID ((uid_t) -1) | |
53 | #define GID_INVALID ((gid_t) -1) | |
54 | ||
3a664727 LP |
55 | #define UID_NOBODY ((uid_t) 65534U) |
56 | #define GID_NOBODY ((gid_t) 65534U) | |
57 | ||
d1e4b8fd ZJS |
58 | #define ETC_PASSWD_LOCK_PATH "/etc/.pwd.lock" |
59 | ||
61755fda ZJS |
60 | static inline bool uid_is_dynamic(uid_t uid) { |
61 | return DYNAMIC_UID_MIN <= uid && uid <= DYNAMIC_UID_MAX; | |
62 | } | |
63 | ||
83438277 LP |
64 | static inline bool gid_is_dynamic(gid_t gid) { |
65 | return uid_is_dynamic((uid_t) gid); | |
66 | } | |
67 | ||
ece877d4 LP |
68 | static inline bool uid_is_system(uid_t uid) { |
69 | return uid <= SYSTEM_UID_MAX; | |
70 | } | |
71 | ||
72 | static inline bool gid_is_system(gid_t gid) { | |
73 | return gid <= SYSTEM_GID_MAX; | |
74 | } | |
75 | ||
61755fda ZJS |
76 | /* The following macros add 1 when converting things, since UID 0 is a valid UID, while the pointer |
77 | * NULL is special */ | |
ee104e11 LP |
78 | #define PTR_TO_UID(p) ((uid_t) (((uintptr_t) (p))-1)) |
79 | #define UID_TO_PTR(u) ((void*) (((uintptr_t) (u))+1)) | |
80 | ||
81 | #define PTR_TO_GID(p) ((gid_t) (((uintptr_t) (p))-1)) | |
82 | #define GID_TO_PTR(u) ((void*) (((uintptr_t) (u))+1)) | |
ccabee0d LP |
83 | |
84 | static inline bool userns_supported(void) { | |
85 | return access("/proc/self/uid_map", F_OK) >= 0; | |
86 | } | |
e4631b48 LP |
87 | |
88 | bool valid_user_group_name(const char *u); | |
89 | bool valid_user_group_name_or_id(const char *u); | |
90 | bool valid_gecos(const char *d); | |
91 | bool valid_home(const char *p); | |
36d85478 | 92 | |
7b1aaf66 ZJS |
93 | static inline bool valid_shell(const char *p) { |
94 | /* We have the same requirements, so just piggy-back on the home check. | |
95 | * | |
96 | * Let's ignore /etc/shells because this is only applicable to real and | |
97 | * not system users. It is also incompatible with the idea of empty /etc. | |
98 | */ | |
99 | return valid_home(p); | |
100 | } | |
101 | ||
36d85478 | 102 | int maybe_setgroups(size_t size, const gid_t *list); |
24eccc34 LP |
103 | |
104 | bool synthesize_nobody(void); | |
100d5f6e FB |
105 | |
106 | int fgetpwent_sane(FILE *stream, struct passwd **pw); | |
107 | int fgetspent_sane(FILE *stream, struct spwd **sp); | |
108 | int fgetgrent_sane(FILE *stream, struct group **gr); | |
109 | int putpwent_sane(const struct passwd *pw, FILE *stream); | |
110 | int putspent_sane(const struct spwd *sp, FILE *stream); | |
111 | int putgrent_sane(const struct group *gr, FILE *stream); | |
4f07ffa8 | 112 | #if ENABLE_GSHADOW |
100d5f6e FB |
113 | int fgetsgent_sane(FILE *stream, struct sgrp **sg); |
114 | int putsgent_sane(const struct sgrp *sg, FILE *stream); | |
115 | #endif | |
f2c5edbe LP |
116 | |
117 | int make_salt(char **ret); |