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Annotation of 40BSD/libc/stdio/getpwent.c, revision 1.1.1.1

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

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