Function setclassenvironment

tools/libutil/login_class.c:197–247

void
setclassenvironment(login_cap_t *lc, const struct passwd * pwd, int paths)
{
    struct login_vars	*vars = paths ? pathvars : envars;
    int			hlen = pwd ? strlen(pwd->pw_dir) : 0;
    int			nlen = pwd ? strlen(pwd->pw_name) : 0;
    char pch = 0;

    if (hlen && pwd->pw_dir[hlen-1] != '/')
	++pch;

    while (vars->tag != NULL) {
	const char * var = paths ? login_getpath(lc, vars->tag, NULL)
				 : login_getcapstr(lc, vars->tag, NULL, NULL);

	char * np  = substvar(var, pwd, hlen, pch, nlen);

	if (np != NULL) {
	    setenv(vars->var, np, vars->overwrite);
	    free(np);
	} else if (vars->def != NULL) {
	    setenv(vars->var, vars->def, 0);
	}
	++vars;
    }

    /*
     * If we're not processing paths, then see if there is a setenv list by
     * which the admin and/or user may set an arbitrary set of env vars.
     */
    if (!paths) {
	const char	**set_env = login_getcaplist(lc, "setenv", ",");

	if (set_env != NULL) {
	    while (*set_env != NULL) {
		char	*p = strchr(*set_env, '=');

		if (p != NULL) {  /* Discard invalid entries */
		    char	*np;

		    *p++ = '\0';
		    if ((np = substvar(p, pwd, hlen, pch, nlen)) != NULL) {
			setenv(*set_env, np, 1);
			free(np);
		    }
		}
		++set_env;
	    }
	}
    }
}


static int