| 1 | /* @(#)getpwent.c 4.1 (Berkeley) %G% */ |
| 2 | #include <stdio.h> |
| 3 | #include <pwd.h> |
| 4 | |
| 5 | static char PASSWD[] = "/etc/passwd"; |
| 6 | static char EMPTY[] = ""; |
| 7 | static FILE *pwf = NULL; |
| 8 | static char line[BUFSIZ+1]; |
| 9 | static struct passwd passwd; |
| 10 | |
| 11 | setpwent() |
| 12 | { |
| 13 | if( pwf == NULL ) |
| 14 | pwf = fopen( PASSWD, "r" ); |
| 15 | else |
| 16 | rewind( pwf ); |
| 17 | } |
| 18 | |
| 19 | endpwent() |
| 20 | { |
| 21 | if( pwf != NULL ){ |
| 22 | fclose( pwf ); |
| 23 | pwf = NULL; |
| 24 | } |
| 25 | } |
| 26 | |
| 27 | static char * |
| 28 | pwskip(p) |
| 29 | register char *p; |
| 30 | { |
| 31 | while( *p && *p != ':' ) |
| 32 | ++p; |
| 33 | if( *p ) *p++ = 0; |
| 34 | return(p); |
| 35 | } |
| 36 | |
| 37 | struct passwd * |
| 38 | getpwent() |
| 39 | { |
| 40 | register char *p; |
| 41 | |
| 42 | if (pwf == NULL) { |
| 43 | if( (pwf = fopen( PASSWD, "r" )) == NULL ) |
| 44 | return(0); |
| 45 | } |
| 46 | p = fgets(line, BUFSIZ, pwf); |
| 47 | if (p==NULL) |
| 48 | return(0); |
| 49 | passwd.pw_name = p; |
| 50 | p = pwskip(p); |
| 51 | passwd.pw_passwd = p; |
| 52 | p = pwskip(p); |
| 53 | passwd.pw_uid = atoi(p); |
| 54 | p = pwskip(p); |
| 55 | passwd.pw_gid = atoi(p); |
| 56 | passwd.pw_quota = 0; |
| 57 | passwd.pw_comment = EMPTY; |
| 58 | p = pwskip(p); |
| 59 | passwd.pw_gecos = p; |
| 60 | p = pwskip(p); |
| 61 | passwd.pw_dir = p; |
| 62 | p = pwskip(p); |
| 63 | passwd.pw_shell = p; |
| 64 | while(*p && *p != '\n') p++; |
| 65 | *p = '\0'; |
| 66 | return(&passwd); |
| 67 | } |