diff options
Diffstat (limited to 'options.c')
| -rw-r--r-- | options.c | 106 |
1 files changed, 85 insertions, 21 deletions
@@ -890,10 +890,17 @@ dhcp_option_address_parse (const char *name, const char *parm, in_addr_t *array, } else { - bool error = false; - const in_addr_t addr = get_ip_addr (parm, msglevel, &error); - if (!error) - array[(*len)++] = addr; + if (ip_addr_dotted_quad_safe (parm)) + { + bool error = false; + const in_addr_t addr = get_ip_addr (parm, msglevel, &error); + if (!error) + array[(*len)++] = addr; + } + else + { + msg (msglevel, "dhcp-option parameter %s '%s' must be an IP address", name, parm); + } } } @@ -2495,20 +2502,24 @@ foreign_option (struct options *o, char *argv[], int len, struct env_set *es) struct buffer value = alloc_buf_gc (OPTION_PARM_SIZE, &gc); int i; bool first = true; + bool good = true; - buf_printf (&name, "foreign_option_%d", o->foreign_option_index + 1); + good &= buf_printf (&name, "foreign_option_%d", o->foreign_option_index + 1); ++o->foreign_option_index; for (i = 0; i < len; ++i) { if (argv[i]) { if (!first) - buf_printf (&value, " "); - buf_printf (&value, "%s", argv[i]); + good &= buf_printf (&value, " "); + good &= buf_printf (&value, "%s", argv[i]); first = false; } } - setenv_str (es, BSTR(&name), BSTR(&value)); + if (good) + setenv_str (es, BSTR(&name), BSTR(&value)); + else + msg (M_WARN, "foreign_option: name/value overflow"); gc_free (&gc); } } @@ -3238,6 +3249,7 @@ add_option (struct options *options, { struct gc_arena gc = gc_new (); ASSERT (MAX_PARMS >= 5); + const bool pull_mode = BOOL_CAST (permission_mask & OPT_P_PULL_MODE); if (!file) { @@ -3264,11 +3276,18 @@ add_option (struct options *options, read_config_file (options, p[1], level, file, line, msglevel, permission_mask, option_types_found, es); } +#if 0 + else if (streq (p[0], "foreign-option") && p[1]) + { + VERIFY_PERMISSION (OPT_P_IPWIN32); + foreign_option (options, p, 3, es); + } +#endif else if (streq (p[0], "echo") || streq (p[0], "parameter")) { struct buffer string = alloc_buf_gc (OPTION_PARM_SIZE, &gc); int j; - const bool pull_mode = BOOL_CAST (permission_mask & OPT_P_PULL_MODE); + bool good = true; VERIFY_PERMISSION (OPT_P_ECHO); @@ -3277,16 +3296,21 @@ add_option (struct options *options, if (!p[j]) break; if (j > 1) - buf_printf (&string, " "); - buf_printf (&string, "%s", p[j]); + good &= buf_printf (&string, " "); + good &= buf_printf (&string, "%s", p[j]); } - msg (M_INFO, "%s:%s", - pull_mode ? "ECHO-PULL" : "ECHO", - BSTR (&string)); + if (good) + { + msg (M_INFO, "%s:%s", + pull_mode ? "ECHO-PULL" : "ECHO", + BSTR (&string)); #ifdef ENABLE_MANAGEMENT - if (management) - management_echo (management, BSTR (&string), pull_mode); + if (management) + management_echo (management, BSTR (&string), pull_mode); #endif + } + else + msg (M_WARN, "echo/parameter option overflow"); } #ifdef ENABLE_MANAGEMENT else if (streq (p[0], "management") && p[1] && p[2]) @@ -3408,7 +3432,13 @@ add_option (struct options *options, else if (streq (p[0], "lladdr") && p[1]) { VERIFY_PERMISSION (OPT_P_UP); - options->lladdr = p[1]; + if (ip_addr_dotted_quad_safe (p[1])) + options->lladdr = p[1]; + else + { + msg (msglevel, "lladdr parm '%s' must be an IP address", p[1]); + goto err; + } } else if (streq (p[0], "topology") && p[1]) { @@ -3423,15 +3453,23 @@ add_option (struct options *options, #ifdef CONFIG_FEATURE_IPROUTE else if (streq (p[0], "iproute") && p[1]) { - VERIFY_PERMISSION (OPT_P_UP); + VERIFY_PERMISSION (OPT_P_GENERAL); iproute_path = p[1]; } #endif else if (streq (p[0], "ifconfig") && p[1] && p[2]) { VERIFY_PERMISSION (OPT_P_UP); - options->ifconfig_local = p[1]; - options->ifconfig_remote_netmask = p[2]; + if (ip_addr_dotted_quad_safe (p[1]) && ip_addr_dotted_quad_safe (p[2])) + { + options->ifconfig_local = p[1]; + options->ifconfig_remote_netmask = p[2]; + } + else + { + msg (msglevel, "ifconfig parms '%s' and '%s' must be IP addresses", p[1], p[2]); + goto err; + } } else if (streq (p[0], "ifconfig-noexec")) { @@ -4176,12 +4214,38 @@ add_option (struct options *options, { VERIFY_PERMISSION (OPT_P_ROUTE); rol_check_alloc (options); + if (pull_mode) + { + if (!ip_addr_dotted_quad_safe (p[1]) && !is_special_addr (p[1])) + { + msg (msglevel, "route parameter network/IP '%s' is not an IP address", p[1]); + goto err; + } + if (p[2] && !ip_addr_dotted_quad_safe (p[2])) + { + msg (msglevel, "route parameter netmask '%s' is not an IP address", p[2]); + goto err; + } + if (p[3] && !ip_addr_dotted_quad_safe (p[3]) && !is_special_addr (p[3])) + { + msg (msglevel, "route parameter gateway '%s' is not an IP address", p[3]); + goto err; + } + } add_route_to_option_list (options->routes, p[1], p[2], p[3], p[4]); } else if (streq (p[0], "route-gateway") && p[1]) { VERIFY_PERMISSION (OPT_P_ROUTE_EXTRAS); - options->route_default_gateway = p[1]; + if (ip_addr_dotted_quad_safe (p[1]) || is_special_addr (p[1])) + { + options->route_default_gateway = p[1]; + } + else + { + msg (msglevel, "route-gateway parm '%s' must be an IP address", p[1]); + goto err; + } } else if (streq (p[0], "route-metric") && p[1]) { |