| /* |
| * dhcpcd-dbus |
| * Copyright 2009 Roy Marples <roy@marples.name> |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
| * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
| * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| */ |
| |
| #include <arpa/inet.h> |
| |
| #include <ctype.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <syslog.h> |
| |
| #include <dbus/dbus.h> |
| |
| #include "config.h" |
| #include "dbus-dict.h" |
| |
| #define S_EINVAL DHCPCD_SERVICE ".InvalidArgument" |
| |
| static dbus_bool_t |
| append_sanitized_string(DBusMessageIter *iter, const char *value) |
| { |
| dbus_bool_t ret; |
| int len = strlen(value); |
| char *sanitized_value = malloc(len + 1); |
| dbus_bool_t sanitize_was_invoked = FALSE; |
| |
| if (sanitized_value != NULL) { |
| int i; |
| for (i = 0; i < len; i++) { |
| if (isascii(value[i]) || isprint(value[i])) |
| sanitized_value[i] = value[i]; |
| else { |
| sanitize_was_invoked = TRUE; |
| sanitized_value[i] = '?'; |
| } |
| } |
| sanitized_value[i] = '\0'; |
| if (sanitize_was_invoked) |
| syslog(LOG_ERR, "DBus string parameter sanitization" |
| " was invoked"); |
| } else { |
| /* |
| * Whoops! malloc failed. We could give up right now, but we |
| * could also just pass the un-sanitized value on the |
| * off-chance that we succeed. If we don't we'll just crash |
| * in dbus_message_iter_append_basic(). |
| */ |
| sanitized_value = value; |
| } |
| |
| ret = dbus_message_iter_append_basic(iter, DBUS_TYPE_STRING, |
| &sanitized_value); |
| |
| if (sanitized_value != value) |
| free(sanitized_value); |
| |
| return ret; |
| } |
| |
| static int |
| append_config_value(DBusMessageIter *entry, int type, |
| const char *data) |
| { |
| int retval; |
| DBusMessageIter var; |
| unsigned char byte; |
| dbus_uint16_t u16; |
| dbus_uint32_t u32; |
| dbus_int16_t i16; |
| dbus_int32_t i32; |
| struct in_addr in; |
| |
| retval = -1; |
| switch (type) { |
| case DBUS_TYPE_BOOLEAN: |
| if (*data == '0' || *data == '\0') |
| u32 = 0; |
| else |
| u32 = 1; |
| dbus_message_iter_open_container(entry, DBUS_TYPE_VARIANT, |
| DBUS_TYPE_BOOLEAN_AS_STRING, &var); |
| if (dbus_message_iter_append_basic(&var, |
| DBUS_TYPE_BOOLEAN, &u32)) |
| retval = 0; |
| break; |
| case DBUS_TYPE_BYTE: |
| byte = strtoul(data, NULL, 0); |
| dbus_message_iter_open_container(entry, DBUS_TYPE_VARIANT, |
| DBUS_TYPE_BYTE_AS_STRING, &var); |
| if (dbus_message_iter_append_basic(&var, DBUS_TYPE_BYTE, |
| &byte)) |
| retval = 0; |
| break; |
| case DBUS_TYPE_STRING: |
| dbus_message_iter_open_container(entry, DBUS_TYPE_VARIANT, |
| DBUS_TYPE_STRING_AS_STRING, &var); |
| if (append_sanitized_string(&var, data)) |
| retval = 0; |
| break; |
| case DBUS_TYPE_INT16: |
| i16 = strtol(data, NULL, 0); |
| dbus_message_iter_open_container(entry, DBUS_TYPE_VARIANT, |
| DBUS_TYPE_INT16_AS_STRING, &var); |
| if (dbus_message_iter_append_basic(&var, |
| DBUS_TYPE_INT16, &i16)) |
| retval = 0; |
| break; |
| case DBUS_TYPE_UINT16: |
| u16 = strtoul(data, NULL, 0); |
| dbus_message_iter_open_container(entry, DBUS_TYPE_VARIANT, |
| DBUS_TYPE_UINT16_AS_STRING, &var); |
| if (dbus_message_iter_append_basic(&var, |
| DBUS_TYPE_UINT16, &u16)) |
| retval = 0; |
| break; |
| case DBUS_TYPE_INT32: |
| i32 = strtol(data, NULL, 0); |
| dbus_message_iter_open_container(entry, DBUS_TYPE_VARIANT, |
| DBUS_TYPE_INT32_AS_STRING, &var); |
| if (dbus_message_iter_append_basic(&var, |
| DBUS_TYPE_INT32, &i32)) |
| retval = 0; |
| break; |
| case DBUS_TYPE_UINT32: |
| if (strchr(data, '.') != NULL && inet_aton(data, &in) == 1) |
| u32 = in.s_addr; |
| else |
| u32 = strtoul(data, NULL, 0); |
| dbus_message_iter_open_container(entry, DBUS_TYPE_VARIANT, |
| DBUS_TYPE_UINT32_AS_STRING, &var); |
| if (dbus_message_iter_append_basic(&var, |
| DBUS_TYPE_UINT32, &u32)) |
| retval = 0; |
| break; |
| default: |
| retval = 1; |
| break; |
| } |
| if (retval == 0) |
| dbus_message_iter_close_container(entry, &var); |
| else if (retval == 1) |
| retval = 0; |
| |
| return retval; |
| } |
| |
| static int |
| append_config_array(DBusMessageIter *entry, int type, const char *data) |
| { |
| int retval; |
| char *ns, *p, *tok; |
| const char *tsa, *ts; |
| DBusMessageIter var, array; |
| dbus_bool_t ok; |
| dbus_uint32_t u32; |
| struct in_addr in; |
| |
| switch (type) { |
| case DBUS_TYPE_STRING: |
| tsa = DBUS_TYPE_ARRAY_AS_STRING DBUS_TYPE_STRING_AS_STRING; |
| ts = DBUS_TYPE_STRING_AS_STRING; |
| break; |
| case DBUS_TYPE_UINT32: |
| tsa = DBUS_TYPE_ARRAY_AS_STRING DBUS_TYPE_UINT32_AS_STRING; |
| ts = DBUS_TYPE_UINT32_AS_STRING; |
| break; |
| default: |
| return -1; |
| } |
| |
| ns = p = strdup(data); |
| if (ns == NULL) |
| return -1; |
| retval = 0; |
| |
| dbus_message_iter_open_container(entry, DBUS_TYPE_VARIANT, tsa, &var); |
| dbus_message_iter_open_container(&var, DBUS_TYPE_ARRAY, ts, &array); |
| while ((tok = strsep(&p, " ")) != NULL) { |
| if (*tok == '\0') |
| continue; |
| switch(type) { |
| case DBUS_TYPE_STRING: |
| ok = append_sanitized_string(&array, tok); |
| break; |
| case DBUS_TYPE_UINT32: |
| if (strchr(tok, '.') != NULL && |
| inet_aton(tok, &in) == 1) |
| u32 = in.s_addr; |
| else |
| u32 = strtoul(tok, NULL, 0); |
| ok = dbus_message_iter_append_basic(&array, |
| DBUS_TYPE_UINT32, &u32); |
| break; |
| default: |
| ok = FALSE; |
| break; |
| } |
| if (!ok) |
| break; |
| } |
| dbus_message_iter_close_container(&var, &array); |
| dbus_message_iter_close_container(entry, &var); |
| free(ns); |
| return retval; |
| } |
| |
| int |
| dict_append_config_item(DBusMessageIter *iter, const struct o_dbus *op, |
| const char *data) |
| { |
| int retval; |
| DBusMessageIter entry; |
| |
| retval = 0; |
| if (*data == '\0') |
| return retval; |
| dbus_message_iter_open_container(iter, |
| DBUS_TYPE_DICT_ENTRY, |
| NULL, |
| &entry); |
| append_sanitized_string(&entry, op->name); |
| if (op->type == DBUS_TYPE_ARRAY) |
| retval = append_config_array(&entry, op->sub_type, data); |
| else |
| retval = append_config_value(&entry, op->type, data); |
| dbus_message_iter_close_container(iter, &entry); |
| return retval; |
| } |