/*
* Reads the next node from the given file. On success, the 'arcv'
* array is allocated and it must be freed by the caller.
*
* Return 1 on success, 0 on failure.
*
*/
static int read_node(FILE *f, struct node *n){
int err;
err = read_uint_field(f, &n->num);
n->num = n->num - 1; /* avoiding 1-indexing */
if (err) {
return 1;
}
err = read_int_field(f, &n->x);
if (err) {
return 1;
}
err = read_int_field(f, &n->y);
if (err) {
return 1;
}
err = read_uint_field(f, &n->num_arcs);
if (err) {
return 1;
}
n->arcv = xmalloc(n->num_arcs * sizeof(*n->arcv));
err = read_arcs(f, n->arcv, n->num_arcs);
if (err) {
free(n->arcv);
return 1;
}
return 0;
}
static int read_pwd(FILE *stream, char *buf, size_t buflen, struct passwd *pwd) {
int res;
char *p = buf;
size_t llen = buflen;
if (0 != (res = read_field(stream, &p, &llen, &pwd->pw_name, ':'))) {
return res;
}
if (0 != (res = read_field(stream, &p, &llen, &pwd->pw_passwd, ':'))) {
return res;
}
if (0 != (res = read_int_field(stream, "%hd", &pwd->pw_uid, ':'))) {
return res;
}
if (0 != (res = read_int_field(stream, "%hd", &pwd->pw_gid, ':'))) {
return res;
}
if (0 != (res = read_field(stream, &p, &llen, &pwd->pw_gecos, ':'))) {
return res;
}
if (0 != (res = read_field(stream, &p, &llen, &pwd->pw_dir, ':'))) {
return res;
}
if (0 != (res = read_field(stream, &p, &llen, &pwd->pw_shell, '\n'))) {
return res;
}
return 0;
}
/*
* Reads the next node from the given file. On success, the 'arcv'
* array is allocated and it must be freed by the caller.
*
* Return 1 on success, 0 on failure.
*/
static int read_node(FILE *f, struct node *n)
{
int err;
err = read_uint_field(f, &n->num);
n->num = n->num - 1; /* avoiding 1-indexing */
if (err)
return 1;
err = read_int_field(f, &n->x);
if (err)
return 1;
err = read_int_field(f, &n->y);
if (err)
return 1;
err = read_uint_field(f, &n->num_arcs);
if (err)
return 1;
n->arcv = malloc(n->num_arcs * sizeof(*n->arcv));
if (!(n->arcv)) {
fprintf(stderr, "Failed allocating %lu bytes for %u arcs\n",
(unsigned long) n->num_arcs * sizeof(*n->arcv),
n->num_arcs);
perror("malloc failed");
return 1;
}
err = read_arcs(f, n->arcv, n->num_arcs);
if (err) {
free(n->arcv);
return 1;
}
return 0;
}
int fgetgrent_r(FILE *fp, struct group *gbuf, char *tbuf,
size_t buflen, struct group **gbufp) {
int res;
char *buf = tbuf;
size_t buf_len = buflen;
char *ch, **pmem;
*gbufp = NULL;
if (0 != (res = read_field(fp, &buf, &buf_len, &gbuf->gr_name, ':'))) {
return res;
}
if (0 != (res = read_field(fp, &buf, &buf_len, &gbuf->gr_passwd, ':'))) {
return res;
}
if (0 != (res = read_int_field(fp, "%hd", &gbuf->gr_gid, ':'))) {
return res;
}
if (0 != (res = read_field(fp, &buf, &buf_len, &ch, '\n'))) {
return res;
}
gbuf->gr_mem = pmem = (char **)binalign_bound((uintptr_t)buf, sizeof(void *));
buf_len -= (uintptr_t)pmem - (uintptr_t)buf;
*pmem = ch;
while (NULL != (ch = strchr(ch, ','))) {
if (buf_len < sizeof(char *)) {
return -ERANGE;
}
buf_len -= sizeof(char *);
*ch++ = '\0';
*(++pmem) = ch;
}
if (buf_len < sizeof(char *)) {
return -ERANGE;
}
*(++pmem) = NULL;
*gbufp = gbuf;
return 0;
}
int get_defpswd(struct passwd *passwd, char *buf, size_t buf_len) {
FILE *passwdf;
char *temp;
int res = 0;
if (NULL == (passwdf = fopen(ADDUSER_FILE, "r"))) {
return errno;
}
while (read_field(passwdf, &buf, &buf_len, &temp, '=') != EOF) {
if(0 == strcmp(temp, "GROUP")) {
if (0 != read_int_field(passwdf, "%hd", &passwd->pw_gid, '\n')) {
res = -1;
goto out;
}
continue;
}
if(0 == strcmp(temp, "HOME")) {
if (0 != read_field(passwdf, &buf, &buf_len,
&passwd->pw_dir, '\n')) {
res = -1;
goto out;
}
continue;
}
if(0 == strcmp(temp, "SHELL")) {
if (0 != read_field(passwdf, &buf, &buf_len,
&passwd->pw_shell, '\n')) {
res = -1;
goto out;
}
continue;
}
}
out:
fclose(passwdf);
return res;
}
struct spwd *fgetspent(FILE *file) {
int res;
char *buf = spwd_buf;
size_t buf_len = SHADOW_NAME_BUF_LEN + SHADOW_PSWD_BUF_LEN;
if (0 != (res = read_field(file, &buf, &buf_len, &spwd.sp_namp, ':'))) {
return NULL;
}
if (0 != (res = read_field(file, &buf, &buf_len, &spwd.sp_pwdp, ':'))) {
return NULL;
}
if (0 != (res = read_int_field(file, "%ld", &spwd.sp_lstchg, ':'))) {
return NULL;
}
if (0 != (res = read_int_field(file, "%ld", &spwd.sp_min, ':'))) {
return NULL;
}
if (0 != (res = read_int_field(file, "%ld", &spwd.sp_max, ':'))) {
return NULL;
}
if (0 != (res = read_int_field(file, "%ld", &spwd.sp_warn, ':'))) {
return NULL;
}
if (0 != (res = read_int_field(file, "%ld", &spwd.sp_inact, ':'))) {
return NULL;
}
if (0 != (res = read_int_field(file, "%ld", &spwd.sp_expire, ':'))) {
return NULL;
}
if (0 != (res = read_int_field(file, "%ld", &spwd.sp_flag, '\n'))) {
return NULL;
}
return &spwd;
}
