| 1 | #include "pwf.h" |
| 2 | #include <pthread.h> |
| 3 | |
| 4 | static unsigned atou(char **s) |
| 5 | { |
| 6 | unsigned x; |
| 7 | for (x=0; **s-'0'<10U; ++*s) x=10*x+(**s-'0'); |
| 8 | return x; |
| 9 | } |
| 10 | |
| 11 | int __getgrent_a(FILE *f, struct group *gr, char **line, size_t *size, char ***mem, size_t *nmem, struct group **res) |
| 12 | { |
| 13 | ssize_t l; |
| 14 | char *s, *mems; |
| 15 | size_t i; |
| 16 | int rv = 0; |
| 17 | int cs; |
| 18 | pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, &cs); |
| 19 | for (;;) { |
| 20 | if ((l=getline(line, size, f)) < 0) { |
| 21 | rv = ferror(f) ? errno : 0; |
| 22 | free(*line); |
| 23 | *line = 0; |
| 24 | gr = 0; |
| 25 | goto end; |
| 26 | } |
| 27 | line[0][l-1] = 0; |
| 28 | |
| 29 | s = line[0]; |
| 30 | gr->gr_name = s++; |
| 31 | if (!(s = strchr(s, ':'))) continue; |
| 32 | |
| 33 | *s++ = 0; gr->gr_passwd = s; |
| 34 | if (!(s = strchr(s, ':'))) continue; |
| 35 | |
| 36 | *s++ = 0; gr->gr_gid = atou(&s); |
| 37 | if (*s != ':') continue; |
| 38 | |
| 39 | *s++ = 0; mems = s; |
| 40 | break; |
| 41 | } |
| 42 | |
| 43 | for (*nmem=!!*s; *s; s++) |
| 44 | if (*s==',') ++*nmem; |
| 45 | free(*mem); |
| 46 | *mem = calloc(sizeof(char *), *nmem+1); |
| 47 | if (!*mem) { |
| 48 | rv = errno; |
| 49 | free(*line); |
| 50 | *line = 0; |
| 51 | gr = 0; |
| 52 | goto end; |
| 53 | } |
| 54 | if (*mems) { |
| 55 | mem[0][0] = mems; |
| 56 | for (s=mems, i=0; *s; s++) |
| 57 | if (*s==',') *s++ = 0, mem[0][++i] = s; |
| 58 | mem[0][++i] = 0; |
| 59 | } else { |
| 60 | mem[0][0] = 0; |
| 61 | } |
| 62 | gr->gr_mem = *mem; |
| 63 | end: |
| 64 | pthread_setcancelstate(cs, 0); |
| 65 | *res = gr; |
| 66 | if(rv) errno = rv; |
| 67 | return rv; |
| 68 | } |