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-rw-r--r--src/basic/util.c375
1 files changed, 1 insertions, 374 deletions
diff --git a/src/basic/util.c b/src/basic/util.c
index c02dfc5bc9..010261b37d 100644
--- a/src/basic/util.c
+++ b/src/basic/util.c
@@ -98,6 +98,7 @@
#include "string-util.h"
#include "strv.h"
#include "terminal-util.h"
+#include "user-util.h"
#include "utf8.h"
#include "util.h"
#include "virt.h"
@@ -168,47 +169,6 @@ int parse_pid(const char *s, pid_t* ret_pid) {
return 0;
}
-bool uid_is_valid(uid_t uid) {
-
- /* Some libc APIs use UID_INVALID as special placeholder */
- if (uid == (uid_t) 0xFFFFFFFF)
- return false;
-
- /* A long time ago UIDs where 16bit, hence explicitly avoid the 16bit -1 too */
- if (uid == (uid_t) 0xFFFF)
- return false;
-
- return true;
-}
-
-int parse_uid(const char *s, uid_t* ret_uid) {
- unsigned long ul = 0;
- uid_t uid;
- int r;
-
- assert(s);
-
- r = safe_atolu(s, &ul);
- if (r < 0)
- return r;
-
- uid = (uid_t) ul;
-
- if ((unsigned long) uid != ul)
- return -ERANGE;
-
- if (!uid_is_valid(uid))
- return -ENXIO; /* we return ENXIO instead of EINVAL
- * here, to make it easy to distuingish
- * invalid numeric uids invalid
- * strings. */
-
- if (ret_uid)
- *ret_uid = uid;
-
- return 0;
-}
-
int safe_atou(const char *s, unsigned *ret_u) {
char *x = NULL;
unsigned long l;
@@ -1437,55 +1397,6 @@ void rename_process(const char name[8]) {
}
}
-char *lookup_uid(uid_t uid) {
- long bufsize;
- char *name;
- _cleanup_free_ char *buf = NULL;
- struct passwd pwbuf, *pw = NULL;
-
- /* Shortcut things to avoid NSS lookups */
- if (uid == 0)
- return strdup("root");
-
- bufsize = sysconf(_SC_GETPW_R_SIZE_MAX);
- if (bufsize <= 0)
- bufsize = 4096;
-
- buf = malloc(bufsize);
- if (!buf)
- return NULL;
-
- if (getpwuid_r(uid, &pwbuf, buf, bufsize, &pw) == 0 && pw)
- return strdup(pw->pw_name);
-
- if (asprintf(&name, UID_FMT, uid) < 0)
- return NULL;
-
- return name;
-}
-
-char* getlogname_malloc(void) {
- uid_t uid;
- struct stat st;
-
- if (isatty(STDIN_FILENO) && fstat(STDIN_FILENO, &st) >= 0)
- uid = st.st_uid;
- else
- uid = getuid();
-
- return lookup_uid(uid);
-}
-
-char *getusername_malloc(void) {
- const char *e;
-
- e = getenv("USER");
- if (e)
- return strdup(e);
-
- return lookup_uid(getuid());
-}
-
bool is_fs_type(const struct statfs *s, statfs_f_type_t magic_value) {
assert(s);
assert_cc(sizeof(statfs_f_type_t) >= sizeof(s->f_type));
@@ -2074,182 +1985,6 @@ int socket_from_display(const char *display, char **path) {
return 0;
}
-int get_user_creds(
- const char **username,
- uid_t *uid, gid_t *gid,
- const char **home,
- const char **shell) {
-
- struct passwd *p;
- uid_t u;
-
- assert(username);
- assert(*username);
-
- /* We enforce some special rules for uid=0: in order to avoid
- * NSS lookups for root we hardcode its data. */
-
- if (streq(*username, "root") || streq(*username, "0")) {
- *username = "root";
-
- if (uid)
- *uid = 0;
-
- if (gid)
- *gid = 0;
-
- if (home)
- *home = "/root";
-
- if (shell)
- *shell = "/bin/sh";
-
- return 0;
- }
-
- if (parse_uid(*username, &u) >= 0) {
- errno = 0;
- p = getpwuid(u);
-
- /* If there are multiple users with the same id, make
- * sure to leave $USER to the configured value instead
- * of the first occurrence in the database. However if
- * the uid was configured by a numeric uid, then let's
- * pick the real username from /etc/passwd. */
- if (p)
- *username = p->pw_name;
- } else {
- errno = 0;
- p = getpwnam(*username);
- }
-
- if (!p)
- return errno > 0 ? -errno : -ESRCH;
-
- if (uid)
- *uid = p->pw_uid;
-
- if (gid)
- *gid = p->pw_gid;
-
- if (home)
- *home = p->pw_dir;
-
- if (shell)
- *shell = p->pw_shell;
-
- return 0;
-}
-
-char* uid_to_name(uid_t uid) {
- struct passwd *p;
- char *r;
-
- if (uid == 0)
- return strdup("root");
-
- p = getpwuid(uid);
- if (p)
- return strdup(p->pw_name);
-
- if (asprintf(&r, UID_FMT, uid) < 0)
- return NULL;
-
- return r;
-}
-
-char* gid_to_name(gid_t gid) {
- struct group *p;
- char *r;
-
- if (gid == 0)
- return strdup("root");
-
- p = getgrgid(gid);
- if (p)
- return strdup(p->gr_name);
-
- if (asprintf(&r, GID_FMT, gid) < 0)
- return NULL;
-
- return r;
-}
-
-int get_group_creds(const char **groupname, gid_t *gid) {
- struct group *g;
- gid_t id;
-
- assert(groupname);
-
- /* We enforce some special rules for gid=0: in order to avoid
- * NSS lookups for root we hardcode its data. */
-
- if (streq(*groupname, "root") || streq(*groupname, "0")) {
- *groupname = "root";
-
- if (gid)
- *gid = 0;
-
- return 0;
- }
-
- if (parse_gid(*groupname, &id) >= 0) {
- errno = 0;
- g = getgrgid(id);
-
- if (g)
- *groupname = g->gr_name;
- } else {
- errno = 0;
- g = getgrnam(*groupname);
- }
-
- if (!g)
- return errno > 0 ? -errno : -ESRCH;
-
- if (gid)
- *gid = g->gr_gid;
-
- return 0;
-}
-
-int in_gid(gid_t gid) {
- gid_t *gids;
- int ngroups_max, r, i;
-
- if (getgid() == gid)
- return 1;
-
- if (getegid() == gid)
- return 1;
-
- ngroups_max = sysconf(_SC_NGROUPS_MAX);
- assert(ngroups_max > 0);
-
- gids = alloca(sizeof(gid_t) * ngroups_max);
-
- r = getgroups(ngroups_max, gids);
- if (r < 0)
- return -errno;
-
- for (i = 0; i < r; i++)
- if (gids[i] == gid)
- return 1;
-
- return 0;
-}
-
-int in_group(const char *name) {
- int r;
- gid_t gid;
-
- r = get_group_creds(&name, &gid);
- if (r < 0)
- return r;
-
- return in_gid(gid);
-}
-
int glob_exists(const char *path) {
_cleanup_globfree_ glob_t g = {};
int k;
@@ -2864,100 +2599,6 @@ bool in_initrd(void) {
return saved;
}
-int get_home_dir(char **_h) {
- struct passwd *p;
- const char *e;
- char *h;
- uid_t u;
-
- assert(_h);
-
- /* Take the user specified one */
- e = secure_getenv("HOME");
- if (e && path_is_absolute(e)) {
- h = strdup(e);
- if (!h)
- return -ENOMEM;
-
- *_h = h;
- return 0;
- }
-
- /* Hardcode home directory for root to avoid NSS */
- u = getuid();
- if (u == 0) {
- h = strdup("/root");
- if (!h)
- return -ENOMEM;
-
- *_h = h;
- return 0;
- }
-
- /* Check the database... */
- errno = 0;
- p = getpwuid(u);
- if (!p)
- return errno > 0 ? -errno : -ESRCH;
-
- if (!path_is_absolute(p->pw_dir))
- return -EINVAL;
-
- h = strdup(p->pw_dir);
- if (!h)
- return -ENOMEM;
-
- *_h = h;
- return 0;
-}
-
-int get_shell(char **_s) {
- struct passwd *p;
- const char *e;
- char *s;
- uid_t u;
-
- assert(_s);
-
- /* Take the user specified one */
- e = getenv("SHELL");
- if (e) {
- s = strdup(e);
- if (!s)
- return -ENOMEM;
-
- *_s = s;
- return 0;
- }
-
- /* Hardcode home directory for root to avoid NSS */
- u = getuid();
- if (u == 0) {
- s = strdup("/bin/sh");
- if (!s)
- return -ENOMEM;
-
- *_s = s;
- return 0;
- }
-
- /* Check the database... */
- errno = 0;
- p = getpwuid(u);
- if (!p)
- return errno > 0 ? -errno : -ESRCH;
-
- if (!path_is_absolute(p->pw_shell))
- return -EINVAL;
-
- s = strdup(p->pw_shell);
- if (!s)
- return -ENOMEM;
-
- *_s = s;
- return 0;
-}
-
bool filename_is_valid(const char *p) {
if (isempty(p))
@@ -4631,20 +4272,6 @@ int mount_move_root(const char *path) {
return 0;
}
-int reset_uid_gid(void) {
-
- if (setgroups(0, NULL) < 0)
- return -errno;
-
- if (setresgid(0, 0, 0) < 0)
- return -errno;
-
- if (setresuid(0, 0, 0) < 0)
- return -errno;
-
- return 0;
-}
-
int getxattr_malloc(const char *path, const char *name, char **value, bool allow_symlink) {
char *v;
size_t l;
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-07-17 19:21:36 +0000