114 lines
1.8 KiB
C
114 lines
1.8 KiB
C
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#include <wchar.h>
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#include <pwd.h>
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#include <grp.h>
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#include <sys/types.h>
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#include "c.h"
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#include "idcache.h"
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struct identry *get_id(struct idcache *ic, unsigned long int id)
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{
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struct identry *ent;
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if (!ic)
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return NULL;
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for (ent = ic->ent; ent; ent = ent->next) {
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if (ent->id == id)
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return ent;
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}
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return NULL;
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}
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struct idcache *new_idcache()
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{
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return calloc(1, sizeof(struct idcache));
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}
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void free_idcache(struct idcache *ic)
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{
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struct identry *ent = ic->ent;
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while (ent) {
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struct identry *next = ent->next;
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free(ent->name);
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free(ent);
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ent = next;
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}
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free(ic);
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}
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static void add_id(struct idcache *ic, char *name, unsigned long int id)
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{
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struct identry *ent, *x;
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int w = 0;
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ent = calloc(1, sizeof(struct identry));
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if (!ent)
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return;
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ent->id = id;
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if (name) {
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#ifdef HAVE_WIDECHAR
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wchar_t wc[LOGIN_NAME_MAX + 1];
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if (mbstowcs(wc, name, LOGIN_NAME_MAX) > 0) {
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wc[LOGIN_NAME_MAX] = '\0';
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w = wcswidth(wc, LOGIN_NAME_MAX);
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}
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else
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#endif
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w = strlen(name);
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}
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/* note, we ignore names with non-printable widechars */
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if (w > 0) {
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ent->name = strdup(name);
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if (!ent->name) {
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free(ent);
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return;
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}
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} else {
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if (asprintf(&ent->name, "%lu", id) < 0) {
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free(ent);
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return;
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}
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}
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for (x = ic->ent; x && x->next; x = x->next);
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if (x)
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x->next = ent;
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else
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ic->ent = ent;
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if (w <= 0)
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w = ent->name ? strlen(ent->name) : 0;
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ic->width = ic->width < w ? w : ic->width;
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return;
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}
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void add_uid(struct idcache *cache, unsigned long int id)
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{
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struct identry *ent= get_id(cache, id);
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if (!ent) {
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struct passwd *pw = getpwuid((uid_t) id);
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add_id(cache, pw ? pw->pw_name : NULL, id);
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}
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}
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void add_gid(struct idcache *cache, unsigned long int id)
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{
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struct identry *ent = get_id(cache, id);
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if (!ent) {
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struct group *gr = getgrgid((gid_t) id);
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add_id(cache, gr ? gr->gr_name : NULL, id);
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}
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}
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