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