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// users.c -- operating system user information
#include <uv.h>
#include "os/os.h"
#include "garray.h"
#include "misc2.h"
#ifdef HAVE_PWD_H
# include <pwd.h>
#endif
// Initialize users garray and fill it with os usernames.
// Return Ok for success, FAIL for failure.
int os_get_usernames(garray_T *users)
{
if (users == NULL) {
return FALSE;
}
ga_init2(users, sizeof(char *), 20);
# if defined(HAVE_GETPWENT) && defined(HAVE_PWD_H)
char *user;
struct passwd *pw;
setpwent();
while ((pw = getpwent()) != NULL) {
// pw->pw_name shouldn't be NULL but just in case...
if (pw->pw_name != NULL) {
if (ga_grow(users, 1) == FAIL) {
return FAIL;
}
user = (char *)vim_strsave((char_u*)pw->pw_name);
if (user == NULL) {
return FAIL;
}
((char **)(users->ga_data))[users->ga_len++] = user;
}
}
endpwent();
# endif
return OK;
}
// Insert user name in s[len].
// Return OK if a name found.
int os_get_user_name(char *s, size_t len)
{
return os_get_uname(getuid(), s, len);
}
// Insert user name for "uid" in s[len].
// Return OK if a name found.
// If the name is not found, write the uid into s[len] and return FAIL.
int os_get_uname(uid_t uid, char *s, size_t len)
{
#if defined(HAVE_PWD_H) && defined(HAVE_GETPWUID)
struct passwd *pw;
if ((pw = getpwuid(uid)) != NULL
&& pw->pw_name != NULL && *(pw->pw_name) != NUL) {
vim_strncpy((char_u *)s, (char_u *)pw->pw_name, len - 1);
return OK;
}
#endif
snprintf(s, len, "%d", (int)uid);
return FAIL; // a number is not a name
}
// Returns the user directory for the given username.
// The caller has to free() the returned string.
// If the username is not found, NULL is returned.
char *os_get_user_directory(const char *name)
{
#if defined(HAVE_GETPWNAM) && defined(HAVE_PWD_H)
struct passwd *pw;
if (name == NULL) {
return NULL;
}
pw = getpwnam(name);
if (pw != NULL) {
// save the string from the static passwd entry into malloced memory
char *user_directory = (char *)vim_strsave((char_u *)pw->pw_dir);
return user_directory;
}
#endif
return NULL;
}
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