diff options
Diffstat (limited to 'package/wprobe/src/user')
| -rw-r--r-- | package/wprobe/src/user/Makefile | 38 | ||||
| -rw-r--r-- | package/wprobe/src/user/list.h | 601 | ||||
| -rw-r--r-- | package/wprobe/src/user/wprobe-lib.c | 1210 | ||||
| -rw-r--r-- | package/wprobe/src/user/wprobe-util.c | 450 | ||||
| -rw-r--r-- | package/wprobe/src/user/wprobe.h | 213 |
5 files changed, 0 insertions, 2512 deletions
diff --git a/package/wprobe/src/user/Makefile b/package/wprobe/src/user/Makefile deleted file mode 100644 index 01e83da..0000000 --- a/package/wprobe/src/user/Makefile +++ /dev/null @@ -1,38 +0,0 @@ -include ../Makefile.inc - -CPPFLAGS += -I../kernel -LDFLAGS = - -ifneq ($(HOST_OS),Linux) -USE_LIBNL_MICRO=1 -else -USE_LIBNL_MICRO= -endif - -ifeq ($(USE_LIBNL_MICRO),1) -LIBNL_PREFIX = /usr/local -LIBNL = $(LIBNL_PREFIX)/lib/libnl-micro.a -CPPFLAGS += -I$(LIBNL_PREFIX)/include/libnl-micro -EXTRA_CFLAGS += -DNO_LOCAL_ACCESS -else -LIBNL = -lnl -endif - -LIBM = -lm -LIBS = $(LIBNL) $(LIBM) - -all: libwprobe.a wprobe-util - -libwprobe.a: wprobe-lib.o - rm -f $@ - $(AR) rcu $@ $^ - $(RANLIB) $@ - -%.o: %.c - $(CC) $(WFLAGS) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(EXTRA_CFLAGS) $< - -wprobe-util: wprobe-util.o wprobe-lib.o - $(CC) -o $@ $^ $(LDFLAGS) $(LIBS) - -clean: - rm -f *.o *.a wprobe-util diff --git a/package/wprobe/src/user/list.h b/package/wprobe/src/user/list.h deleted file mode 100644 index 2959a06..0000000 --- a/package/wprobe/src/user/list.h +++ /dev/null @@ -1,601 +0,0 @@ -#ifndef _LINUX_LIST_H -#define _LINUX_LIST_H - -#include <stddef.h> -/** - * container_of - cast a member of a structure out to the containing structure - * @ptr: the pointer to the member. - * @type: the type of the container struct this is embedded in. - * @member: the name of the member within the struct. - * - */ -#ifndef container_of -#define container_of(ptr, type, member) ( \ - (type *)( (char *)ptr - offsetof(type,member) )) -#endif - - -/* - * Simple doubly linked list implementation. - * - * Some of the internal functions ("__xxx") are useful when - * manipulating whole lists rather than single entries, as - * sometimes we already know the next/prev entries and we can - * generate better code by using them directly rather than - * using the generic single-entry routines. - */ - -struct list_head { - struct list_head *next, *prev; -}; - -#define LIST_HEAD_INIT(name) { &(name), &(name) } - -#define LIST_HEAD(name) \ - struct list_head name = LIST_HEAD_INIT(name) - -static inline void INIT_LIST_HEAD(struct list_head *list) -{ - list->next = list; - list->prev = list; -} - -/* - * Insert a new entry between two known consecutive entries. - * - * This is only for internal list manipulation where we know - * the prev/next entries already! - */ -static inline void __list_add(struct list_head *new, - struct list_head *prev, - struct list_head *next) -{ - next->prev = new; - new->next = next; - new->prev = prev; - prev->next = new; -} - -/** - * list_add - add a new entry - * @new: new entry to be added - * @head: list head to add it after - * - * Insert a new entry after the specified head. - * This is good for implementing stacks. - */ -static inline void list_add(struct list_head *new, struct list_head *head) -{ - __list_add(new, head, head->next); -} - - -/** - * list_add_tail - add a new entry - * @new: new entry to be added - * @head: list head to add it before - * - * Insert a new entry before the specified head. - * This is useful for implementing queues. - */ -static inline void list_add_tail(struct list_head *new, struct list_head *head) -{ - __list_add(new, head->prev, head); -} - - -/* - * Delete a list entry by making the prev/next entries - * point to each other. - * - * This is only for internal list manipulation where we know - * the prev/next entries already! - */ -static inline void __list_del(struct list_head * prev, struct list_head * next) -{ - next->prev = prev; - prev->next = next; -} - -/** - * list_del - deletes entry from list. - * @entry: the element to delete from the list. - * Note: list_empty() on entry does not return true after this, the entry is - * in an undefined state. - */ -static inline void list_del(struct list_head *entry) -{ - __list_del(entry->prev, entry->next); - entry->next = NULL; - entry->prev = NULL; -} - -/** - * list_replace - replace old entry by new one - * @old : the element to be replaced - * @new : the new element to insert - * - * If @old was empty, it will be overwritten. - */ -static inline void list_replace(struct list_head *old, - struct list_head *new) -{ - new->next = old->next; - new->next->prev = new; - new->prev = old->prev; - new->prev->next = new; -} - -static inline void list_replace_init(struct list_head *old, - struct list_head *new) -{ - list_replace(old, new); - INIT_LIST_HEAD(old); -} - -/** - * list_del_init - deletes entry from list and reinitialize it. - * @entry: the element to delete from the list. - */ -static inline void list_del_init(struct list_head *entry) -{ - __list_del(entry->prev, entry->next); - INIT_LIST_HEAD(entry); -} - -/** - * list_move - delete from one list and add as another's head - * @list: the entry to move - * @head: the head that will precede our entry - */ -static inline void list_move(struct list_head *list, struct list_head *head) -{ - __list_del(list->prev, list->next); - list_add(list, head); -} - -/** - * list_move_tail - delete from one list and add as another's tail - * @list: the entry to move - * @head: the head that will follow our entry - */ -static inline void list_move_tail(struct list_head *list, - struct list_head *head) -{ - __list_del(list->prev, list->next); - list_add_tail(list, head); -} - -/** - * list_is_last - tests whether @list is the last entry in list @head - * @list: the entry to test - * @head: the head of the list - */ -static inline int list_is_last(const struct list_head *list, - const struct list_head *head) -{ - return list->next == head; -} - -/** - * list_empty - tests whether a list is empty - * @head: the list to test. - */ -static inline int list_empty(const struct list_head *head) -{ - return head->next == head; -} - -/** - * list_empty_careful - tests whether a list is empty and not being modified - * @head: the list to test - * - * Description: - * tests whether a list is empty _and_ checks that no other CPU might be - * in the process of modifying either member (next or prev) - * - * NOTE: using list_empty_careful() without synchronization - * can only be safe if the only activity that can happen - * to the list entry is list_del_init(). Eg. it cannot be used - * if another CPU could re-list_add() it. - */ -static inline int list_empty_careful(const struct list_head *head) -{ - struct list_head *next = head->next; - return (next == head) && (next == head->prev); -} - -static inline void __list_splice(struct list_head *list, - struct list_head *head) -{ - struct list_head *first = list->next; - struct list_head *last = list->prev; - struct list_head *at = head->next; - - first->prev = head; - head->next = first; - - last->next = at; - at->prev = last; -} - -/** - * list_splice - join two lists - * @list: the new list to add. - * @head: the place to add it in the first list. - */ -static inline void list_splice(struct list_head *list, struct list_head *head) -{ - if (!list_empty(list)) - __list_splice(list, head); -} - -/** - * list_splice_init - join two lists and reinitialise the emptied list. - * @list: the new list to add. - * @head: the place to add it in the first list. - * - * The list at @list is reinitialised - */ -static inline void list_splice_init(struct list_head *list, - struct list_head *head) -{ - if (!list_empty(list)) { - __list_splice(list, head); - INIT_LIST_HEAD(list); - } -} - -/** - * list_entry - get the struct for this entry - * @ptr: the &struct list_head pointer. - * @type: the type of the struct this is embedded in. - * @member: the name of the list_struct within the struct. - */ -#define list_entry(ptr, type, member) \ - container_of(ptr, type, member) - -/** - * list_first_entry - get the first element from a list - * @ptr: the list head to take the element from. - * @type: the type of the struct this is embedded in. - * @member: the name of the list_struct within the struct. - * - * Note, that list is expected to be not empty. - */ -#define list_first_entry(ptr, type, member) \ - list_entry((ptr)->next, type, member) - -/** - * list_for_each - iterate over a list - * @pos: the &struct list_head to use as a loop cursor. - * @head: the head for your list. - */ -#define list_for_each(pos, head) \ - for (pos = (head)->next; pos != (head); \ - pos = pos->next) - -/** - * __list_for_each - iterate over a list - * @pos: the &struct list_head to use as a loop cursor. - * @head: the head for your list. - * - * This variant differs from list_for_each() in that it's the - * simplest possible list iteration code, no prefetching is done. - * Use this for code that knows the list to be very short (empty - * or 1 entry) most of the time. - */ -#define __list_for_each(pos, head) \ - for (pos = (head)->next; pos != (head); pos = pos->next) - -/** - * list_for_each_prev - iterate over a list backwards - * @pos: the &struct list_head to use as a loop cursor. - * @head: the head for your list. - */ -#define list_for_each_prev(pos, head) \ - for (pos = (head)->prev; pos != (head); \ - pos = pos->prev) - -/** - * list_for_each_safe - iterate over a list safe against removal of list entry - * @pos: the &struct list_head to use as a loop cursor. - * @n: another &struct list_head to use as temporary storage - * @head: the head for your list. - */ -#define list_for_each_safe(pos, n, head) \ - for (pos = (head)->next, n = pos->next; pos != (head); \ - pos = n, n = pos->next) - -/** - * list_for_each_prev_safe - iterate over a list backwards safe against removal of list entry - * @pos: the &struct list_head to use as a loop cursor. - * @n: another &struct list_head to use as temporary storage - * @head: the head for your list. - */ -#define list_for_each_prev_safe(pos, n, head) \ - for (pos = (head)->prev, n = pos->prev; \ - pos != (head); \ - pos = n, n = pos->prev) - -/** - * list_for_each_entry - iterate over list of given type - * @pos: the type * to use as a loop cursor. - * @head: the head for your list. - * @member: the name of the list_struct within the struct. - */ -#define list_for_each_entry(pos, head, member) \ - for (pos = list_entry((head)->next, typeof(*pos), member); \ - &pos->member != (head); \ - pos = list_entry(pos->member.next, typeof(*pos), member)) - -/** - * list_for_each_entry_reverse - iterate backwards over list of given type. - * @pos: the type * to use as a loop cursor. - * @head: the head for your list. - * @member: the name of the list_struct within the struct. - */ -#define list_for_each_entry_reverse(pos, head, member) \ - for (pos = list_entry((head)->prev, typeof(*pos), member); \ - &pos->member != (head); \ - pos = list_entry(pos->member.prev, typeof(*pos), member)) - -/** - * list_prepare_entry - prepare a pos entry for use in list_for_each_entry_continue() - * @pos: the type * to use as a start point - * @head: the head of the list - * @member: the name of the list_struct within the struct. - * - * Prepares a pos entry for use as a start point in list_for_each_entry_continue(). - */ -#define list_prepare_entry(pos, head, member) \ - ((pos) ? : list_entry(head, typeof(*pos), member)) - -/** - * list_for_each_entry_continue - continue iteration over list of given type - * @pos: the type * to use as a loop cursor. - * @head: the head for your list. - * @member: the name of the list_struct within the struct. - * - * Continue to iterate over list of given type, continuing after - * the current position. - */ -#define list_for_each_entry_continue(pos, head, member) \ - for (pos = list_entry(pos->member.next, typeof(*pos), member); \ - &pos->member != (head); \ - pos = list_entry(pos->member.next, typeof(*pos), member)) - -/** - * list_for_each_entry_continue_reverse - iterate backwards from the given point - * @pos: the type * to use as a loop cursor. - * @head: the head for your list. - * @member: the name of the list_struct within the struct. - * - * Start to iterate over list of given type backwards, continuing after - * the current position. - */ -#define list_for_each_entry_continue_reverse(pos, head, member) \ - for (pos = list_entry(pos->member.prev, typeof(*pos), member); \ - &pos->member != (head); \ - pos = list_entry(pos->member.prev, typeof(*pos), member)) - -/** - * list_for_each_entry_from - iterate over list of given type from the current point - * @pos: the type * to use as a loop cursor. - * @head: the head for your list. - * @member: the name of the list_struct within the struct. - * - * Iterate over list of given type, continuing from current position. - */ -#define list_for_each_entry_from(pos, head, member) \ - for (; &pos->member != (head); \ - pos = list_entry(pos->member.next, typeof(*pos), member)) - -/** - * list_for_each_entry_safe - iterate over list of given type safe against removal of list entry - * @pos: the type * to use as a loop cursor. - * @n: another type * to use as temporary storage - * @head: the head for your list. - * @member: the name of the list_struct within the struct. - */ -#define list_for_each_entry_safe(pos, n, head, member) \ - for (pos = list_entry((head)->next, typeof(*pos), member), \ - n = list_entry(pos->member.next, typeof(*pos), member); \ - &pos->member != (head); \ - pos = n, n = list_entry(n->member.next, typeof(*n), member)) - -/** - * list_for_each_entry_safe_continue - * @pos: the type * to use as a loop cursor. - * @n: another type * to use as temporary storage - * @head: the head for your list. - * @member: the name of the list_struct within the struct. - * - * Iterate over list of given type, continuing after current point, - * safe against removal of list entry. - */ -#define list_for_each_entry_safe_continue(pos, n, head, member) \ - for (pos = list_entry(pos->member.next, typeof(*pos), member), \ - n = list_entry(pos->member.next, typeof(*pos), member); \ - &pos->member != (head); \ - pos = n, n = list_entry(n->member.next, typeof(*n), member)) - -/** - * list_for_each_entry_safe_from - * @pos: the type * to use as a loop cursor. - * @n: another type * to use as temporary storage - * @head: the head for your list. - * @member: the name of the list_struct within the struct. - * - * Iterate over list of given type from current point, safe against - * removal of list entry. - */ -#define list_for_each_entry_safe_from(pos, n, head, member) \ - for (n = list_entry(pos->member.next, typeof(*pos), member); \ - &pos->member != (head); \ - pos = n, n = list_entry(n->member.next, typeof(*n), member)) - -/** - * list_for_each_entry_safe_reverse - * @pos: the type * to use as a loop cursor. - * @n: another type * to use as temporary storage - * @head: the head for your list. - * @member: the name of the list_struct within the struct. - * - * Iterate backwards over list of given type, safe against removal - * of list entry. - */ -#define list_for_each_entry_safe_reverse(pos, n, head, member) \ - for (pos = list_entry((head)->prev, typeof(*pos), member), \ - n = list_entry(pos->member.prev, typeof(*pos), member); \ - &pos->member != (head); \ - pos = n, n = list_entry(n->member.prev, typeof(*n), member)) - -/* - * Double linked lists with a single pointer list head. - * Mostly useful for hash tables where the two pointer list head is - * too wasteful. - * You lose the ability to access the tail in O(1). - */ - -struct hlist_head { - struct hlist_node *first; -}; - -struct hlist_node { - struct hlist_node *next, **pprev; -}; - -#define HLIST_HEAD_INIT { .first = NULL } -#define HLIST_HEAD(name) struct hlist_head name = { .first = NULL } -#define INIT_HLIST_HEAD(ptr) ((ptr)->first = NULL) -static inline void INIT_HLIST_NODE(struct hlist_node *h) -{ - h->next = NULL; - h->pprev = NULL; -} - -static inline int hlist_unhashed(const struct hlist_node *h) -{ - return !h->pprev; -} - -static inline int hlist_empty(const struct hlist_head *h) -{ - return !h->first; -} - -static inline void __hlist_del(struct hlist_node *n) -{ - struct hlist_node *next = n->next; - struct hlist_node **pprev = n->pprev; - *pprev = next; - if (next) - next->pprev = pprev; -} - -static inline void hlist_del(struct hlist_node *n) -{ - __hlist_del(n); - n->next = NULL; - n->pprev = NULL; -} - -static inline void hlist_del_init(struct hlist_node *n) -{ - if (!hlist_unhashed(n)) { - __hlist_del(n); - INIT_HLIST_NODE(n); - } -} - - -static inline void hlist_add_head(struct hlist_node *n, struct hlist_head *h) -{ - struct hlist_node *first = h->first; - n->next = first; - if (first) - first->pprev = &n->next; - h->first = n; - n->pprev = &h->first; -} - - -/* next must be != NULL */ -static inline void hlist_add_before(struct hlist_node *n, - struct hlist_node *next) -{ - n->pprev = next->pprev; - n->next = next; - next->pprev = &n->next; - *(n->pprev) = n; -} - -static inline void hlist_add_after(struct hlist_node *n, - struct hlist_node *next) -{ - next->next = n->next; - n->next = next; - next->pprev = &n->next; - - if(next->next) - next->next->pprev = &next->next; -} - -#define hlist_entry(ptr, type, member) container_of(ptr,type,member) - -#define hlist_for_each(pos, head) \ - for (pos = (head)->first; pos; pos = pos->next) - -#define hlist_for_each_safe(pos, n, head) \ - for (pos = (head)->first; pos; pos = n) - -/** - * hlist_for_each_entry - iterate over list of given type - * @tpos: the type * to use as a loop cursor. - * @pos: the &struct hlist_node to use as a loop cursor. - * @head: the head for your list. - * @member: the name of the hlist_node within the struct. - */ -#define hlist_for_each_entry(tpos, pos, head, member) \ - for (pos = (head)->first; pos && \ - ({ tpos = hlist_entry(pos, typeof(*tpos), member); 1;}); \ - pos = pos->next) - -/** - * hlist_for_each_entry_continue - iterate over a hlist continuing after current point - * @tpos: the type * to use as a loop cursor. - * @pos: the &struct hlist_node to use as a loop cursor. - * @member: the name of the hlist_node within the struct. - */ -#define hlist_for_each_entry_continue(tpos, pos, member) \ - for (pos = (pos)->next; pos && \ - ({ tpos = hlist_entry(pos, typeof(*tpos), member); 1;}); \ - pos = pos->next) - -/** - * hlist_for_each_entry_from - iterate over a hlist continuing from current point - * @tpos: the type * to use as a loop cursor. - * @pos: the &struct hlist_node to use as a loop cursor. - * @member: the name of the hlist_node within the struct. - */ -#define hlist_for_each_entry_from(tpos, pos, member) \ - for (; pos && \ - ({ tpos = hlist_entry(pos, typeof(*tpos), member); 1;}); \ - pos = pos->next) - -/** - * hlist_for_each_entry_safe - iterate over list of given type safe against removal of list entry - * @tpos: the type * to use as a loop cursor. - * @pos: the &struct hlist_node to use as a loop cursor. - * @n: another &struct hlist_node to use as temporary storage - * @head: the head for your list. - * @member: the name of the hlist_node within the struct. - */ -#define hlist_for_each_entry_safe(tpos, pos, n, head, member) \ - for (pos = (head)->first; \ - pos && ({ n = pos->next; 1; }) && \ - ({ tpos = hlist_entry(pos, typeof(*tpos), member); 1;}); \ - pos = n) - -#endif diff --git a/package/wprobe/src/user/wprobe-lib.c b/package/wprobe/src/user/wprobe-lib.c deleted file mode 100644 index 7a5460b..0000000 --- a/package/wprobe/src/user/wprobe-lib.c +++ /dev/null @@ -1,1210 +0,0 @@ -/* - * wprobe.c: Wireless probe user space library - * Copyright (C) 2008-2009 Felix Fietkau <nbd@openwrt.org> - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version 2 - * of the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - */ - -#define _ISOC99_SOURCE -#define _BSD_SOURCE -#include <sys/types.h> -#include <sys/socket.h> -#include <stdio.h> -#include <string.h> -#include <stdlib.h> -#include <errno.h> -#include <getopt.h> -#include <unistd.h> -#include <stdbool.h> -#include <math.h> -#include <linux/wprobe.h> -#include <netlink/netlink.h> -#include <netlink/attr.h> -#include <netlink/genl/genl.h> -#ifndef NO_LOCAL_ACCESS -#include <netlink/genl/ctrl.h> -#include <netlink/genl/family.h> -#include <endian.h> -#endif -#include "wprobe.h" - -#define DEBUG 1 -#ifdef DEBUG -#define DPRINTF(fmt, ...) fprintf(stderr, "%s(%d): " fmt, __func__, __LINE__, ##__VA_ARGS__) -#else -#define DPRINTF(fmt, ...) do {} while (0) -#endif - -#if defined(BYTE_ORDER) && !defined(__BYTE_ORDER) -#define __LITTLE_ENDIAN LITTLE_ENDIAN -#define __BIG_ENDIAN BIG_ENDIAN -#define __BYTE_ORDER BYTE_ORDER -#endif - -#ifndef __BYTE_ORDER -#error Unknown endian type -#endif - -#define WPROBE_MAX_MSGLEN 65536 - -static inline __u16 __swab16(__u16 x) -{ - return x<<8 | x>>8; -} - -static inline __u32 __swab32(__u32 x) -{ - return x<<24 | x>>24 | - (x & (__u32)0x0000ff00UL)<<8 | - (x & (__u32)0x00ff0000UL)>>8; -} - -static inline __u64 __swab64(__u64 x) -{ - return x<<56 | x>>56 | - (x & (__u64)0x000000000000ff00ULL)<<40 | - (x & (__u64)0x0000000000ff0000ULL)<<24 | - (x & (__u64)0x00000000ff000000ULL)<< 8 | - (x & (__u64)0x000000ff00000000ULL)>> 8 | - (x & (__u64)0x0000ff0000000000ULL)>>24 | - (x & (__u64)0x00ff000000000000ULL)>>40; -} - - -#if __BYTE_ORDER == __LITTLE_ENDIAN -#define SWAP16(var) var = __swab16(var) -#define SWAP32(var) var = __swab32(var) -#define SWAP64(var) var = __swab64(var) -#else -#define SWAP16(var) do {} while(0) -#define SWAP32(var) do {} while(0) -#define SWAP64(var) do {} while(0) -#endif - -int wprobe_port = 17990; -static struct nlattr *tb[WPROBE_ATTR_LAST+1]; -static struct nla_policy attribute_policy[WPROBE_ATTR_LAST+1] = { - [WPROBE_ATTR_ID] = { .type = NLA_U32 }, - [WPROBE_ATTR_MAC] = { .type = NLA_UNSPEC, .minlen = 6, .maxlen = 6 }, - [WPROBE_ATTR_NAME] = { .type = NLA_STRING }, - [WPROBE_ATTR_FLAGS] = { .type = NLA_U32 }, - [WPROBE_ATTR_TYPE] = { .type = NLA_U8 }, - [WPROBE_ATTR_FLAGS] = { .type = NLA_U32 }, - [WPROBE_VAL_S8] = { .type = NLA_U8 }, - [WPROBE_VAL_S16] = { .type = NLA_U16 }, - [WPROBE_VAL_S32] = { .type = NLA_U32 }, - [WPROBE_VAL_S64] = { .type = NLA_U64 }, - [WPROBE_VAL_U8] = { .type = NLA_U8 }, - [WPROBE_VAL_U16] = { .type = NLA_U16 }, - [WPROBE_VAL_U32] = { .type = NLA_U32 }, - [WPROBE_VAL_U64] = { .type = NLA_U64 }, - [WPROBE_VAL_SUM] = { .type = NLA_U64 }, - [WPROBE_VAL_SUM_SQ] = { .type = NLA_U64 }, - [WPROBE_VAL_SAMPLES] = { .type = NLA_U32 }, - [WPROBE_VAL_SCALE_TIME] = { .type = NLA_U64 }, - [WPROBE_ATTR_INTERVAL] = { .type = NLA_U64 }, - [WPROBE_ATTR_SAMPLES_MIN] = { .type = NLA_U32 }, - [WPROBE_ATTR_SAMPLES_MAX] = { .type = NLA_U32 }, - [WPROBE_ATTR_SAMPLES_SCALE_M] = { .type = NLA_U32 }, - [WPROBE_ATTR_SAMPLES_SCALE_D] = { .type = NLA_U32 }, - [WPROBE_ATTR_FILTER_GROUP] = { .type = NLA_NESTED }, - [WPROBE_ATTR_RXCOUNT] = { .type = NLA_U64 }, - [WPROBE_ATTR_TXCOUNT] = { .type = NLA_U64 }, -}; - -typedef int (*wprobe_cb_t)(struct nl_msg *, void *); - -struct wprobe_iface_ops { - int (*send_msg)(struct wprobe_iface *dev, struct nl_msg *msg, wprobe_cb_t cb, void *arg); - void (*free)(struct wprobe_iface *dev); -}; - -struct wprobe_attr_cb { - struct list_head *list; - char *addr; -}; - -#define WPROBE_MAGIC_STR "WPROBE" -struct wprobe_init_hdr { - struct { - char magic[sizeof(WPROBE_MAGIC_STR)]; - - /* protocol version */ - uint8_t version; - - /* extra header length (unused for now) */ - uint16_t extra; - } pre __attribute__((packed)); - union { - struct { - uint16_t genl_family; - } v0 __attribute__((packed)); - }; -} __attribute__((packed)); - -struct wprobe_msg_hdr { - __u16 status; - __u16 error; - __u32 len; -}; - -enum wprobe_resp_status { - WPROBE_MSG_DONE = 0, - WPROBE_MSG_DATA = 1, -}; - -static inline void -wprobe_swap_msg_hdr(struct wprobe_msg_hdr *mhdr) -{ - SWAP16(mhdr->status); - SWAP16(mhdr->error); - SWAP32(mhdr->len); -} - -static int -save_attribute_handler(struct nl_msg *msg, void *arg) -{ - struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); - const char *name = "N/A"; - struct wprobe_attribute *attr; - int type = 0; - struct wprobe_attr_cb *cb = arg; - - nla_parse(tb, WPROBE_ATTR_LAST, genlmsg_attrdata(gnlh, 0), - genlmsg_attrlen(gnlh, 0), attribute_policy); - - if (tb[WPROBE_ATTR_NAME]) - name = nla_data(tb[WPROBE_ATTR_NAME]); - - attr = malloc(sizeof(struct wprobe_attribute) + strlen(name) + 1); - if (!attr) - return -1; - - memset(attr, 0, sizeof(struct wprobe_attribute)); - - if (tb[WPROBE_ATTR_ID]) - attr->id = nla_get_u32(tb[WPROBE_ATTR_ID]); - - if (tb[WPROBE_ATTR_MAC] && cb->addr) - memcpy(cb->addr, nla_data(tb[WPROBE_ATTR_MAC]), 6); - - if (tb[WPROBE_ATTR_FLAGS]) - attr->flags = nla_get_u32(tb[WPROBE_ATTR_FLAGS]); - - if (tb[WPROBE_ATTR_TYPE]) - type = nla_get_u8(tb[WPROBE_ATTR_TYPE]); - - if ((type < WPROBE_VAL_STRING) || - (type > WPROBE_VAL_U64)) - type = 0; - - attr->type = type; - strcpy(attr->name, name); - INIT_LIST_HEAD(&attr->list); - list_add(&attr->list, cb->list); - return 0; -} - -static struct nl_msg * -wprobe_new_msg(struct wprobe_iface *dev, int cmd, bool dump) -{ - struct nl_msg *msg; - uint32_t flags = 0; - - msg = nlmsg_alloc_size(65536); - if (!msg) - return NULL; - - if (dump) - flags |= NLM_F_DUMP; - - genlmsg_put(msg, 0, 0, dev->genl_family, - 0, flags, cmd, 0); - - NLA_PUT_STRING(msg, WPROBE_ATTR_INTERFACE, dev->ifname); -nla_put_failure: - return msg; -} - - -static int -dump_attributes(struct wprobe_iface *dev, bool link, struct list_head *list, char *addr) -{ - struct nl_msg *msg; - struct wprobe_attr_cb cb; - - cb.list = list; - cb.addr = addr; - msg = wprobe_new_msg(dev, WPROBE_CMD_GET_LIST, true); - if (!msg) - return -ENOMEM; - - if (link) - NLA_PUT(msg, WPROBE_ATTR_MAC, 6, "\x00\x00\x00\x00\x00\x00"); - - return dev->ops->send_msg(dev, msg, save_attribute_handler, &cb); - -nla_put_failure: - nlmsg_free(msg); - return -EINVAL; -} - -static struct wprobe_iface * -wprobe_alloc_dev(void) -{ - struct wprobe_iface *dev; - - dev = malloc(sizeof(struct wprobe_iface)); - if (!dev) - return NULL; - - memset(dev, 0, sizeof(struct wprobe_iface)); - - dev->interval = -1; - dev->scale_min = -1; - dev->scale_max = -1; - dev->scale_m = -1; - dev->scale_d = -1; - dev->sockfd = -1; - - INIT_LIST_HEAD(&dev->global_attr); - INIT_LIST_HEAD(&dev->link_attr); - INIT_LIST_HEAD(&dev->links); - return dev; -} - -static int -wprobe_init_dev(struct wprobe_iface *dev) -{ - dump_attributes(dev, false, &dev->global_attr, NULL); - dump_attributes(dev, true, &dev->link_attr, NULL); - return 0; -} - -#ifndef NO_LOCAL_ACCESS -static int n_devs = 0; -static struct nl_sock *handle = NULL; -static struct nl_cache *cache = NULL; -static struct genl_family *family = NULL; - -static int -error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err, void *arg) -{ - int *ret = arg; - *ret = err->error; - return NL_STOP; -} - -static int -finish_handler(struct nl_msg *msg, void *arg) -{ - int *ret = arg; - *ret = 0; - return NL_SKIP; -} - -static int -ack_handler(struct nl_msg *msg, void *arg) -{ - int *ret = arg; - *ret = 0; - return NL_STOP; -} - -static void -wprobe_local_free(struct wprobe_iface *dev) -{ - /* should not happen */ - if (n_devs == 0) - return; - - if (--n_devs != 0) - return; - - if (cache) - nl_cache_free(cache); - if (handle) - nl_socket_free(handle); - handle = NULL; - cache = NULL; -} - -static int -wprobe_local_init(void) -{ - int ret; - - if (n_devs++ > 0) - return 0; - - handle = nl_socket_alloc(); - if (!handle) { - DPRINTF("Failed to create handle\n"); - goto err; - } - - if (genl_connect(handle)) { - DPRINTF("Failed to connect to generic netlink\n"); - goto err; - } - - ret = genl_ctrl_alloc_cache(handle, &cache); - if (ret < 0) { - DPRINTF("Failed to allocate netlink cache\n"); - goto err; - } - - family = genl_ctrl_search_by_name(cache, "wprobe"); - if (!family) { - DPRINTF("wprobe API not present\n"); - goto err; - } - return 0; - -err: - wprobe_local_free(NULL); - return -EINVAL; -} - - -static int -wprobe_local_send_msg(struct wprobe_iface *dev, struct nl_msg *msg, wprobe_cb_t callback, void *arg) -{ - struct nl_cb *cb; - int err = 0; - - cb = nl_cb_alloc(NL_CB_DEFAULT); - if (!cb) - goto out_no_cb; - - if (callback) - nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, callback, arg); - - err = nl_send_auto_complete(handle, msg); - if (err < 0) - goto out; - - err = 1; - - nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &err); - nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, finish_handler, &err); - nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, ack_handler, &err); - - while (err > 0) - nl_recvmsgs(handle, cb); - -out: - nl_cb_put(cb); -out_no_cb: - nlmsg_free(msg); - return err; -} - -static const struct wprobe_iface_ops wprobe_local_ops = { - .send_msg = wprobe_local_send_msg, - .free = wprobe_local_free, -}; - -struct wprobe_iface * -wprobe_get_dev(const char *ifname) -{ - struct wprobe_iface *dev; - - if (wprobe_local_init() != 0) - return NULL; - - dev = wprobe_alloc_dev(); - if (!dev) - goto error_alloc; - - dev->ifname = strdup(ifname); - dev->ops = &wprobe_local_ops; - dev->genl_family = genl_family_get_id(family); - - if (wprobe_init_dev(dev) < 0) - goto error; - - return dev; - -error: - free(dev); -error_alloc: - wprobe_local_free(NULL); - return NULL; -} - -#endif - -static void swap_nlmsghdr(struct nlmsghdr *nlh) -{ - SWAP32(nlh->nlmsg_len); - SWAP16(nlh->nlmsg_type); - SWAP16(nlh->nlmsg_flags); - SWAP32(nlh->nlmsg_seq); - SWAP32(nlh->nlmsg_pid); -} - -static void swap_genlmsghdr(struct genlmsghdr *gnlh) -{ -#if 0 /* probably unnecessary */ - SWAP16(gnlh->reserved); -#endif -} - -static void -wprobe_swap_nested(void *data, int len, bool outgoing) -{ - void *end = data + len; - - while (data < end) { - struct nlattr *nla = data; - unsigned int type, len; - - if (!outgoing) { - SWAP16(nla->nla_len); - SWAP16(nla->nla_type); - - /* required for further sanity checks */ - if (data + nla->nla_len > end) - nla->nla_len = end - data; - } - - len = NLA_ALIGN(nla->nla_len); - type = nla->nla_type & NLA_TYPE_MASK; - - if (type <= WPROBE_ATTR_LAST) { -#if __BYTE_ORDER == __LITTLE_ENDIAN - switch(attribute_policy[type].type) { - case NLA_U16: - SWAP16(*(__u16 *)nla_data(nla)); - break; - case NLA_U32: - SWAP32(*(__u32 *)nla_data(nla)); - break; - case NLA_U64: - SWAP64(*(__u64 *)nla_data(nla)); - break; - case NLA_NESTED: - wprobe_swap_nested(nla_data(nla), nla_len(nla), outgoing); - break; - } -#endif - } - data += len; - - if (outgoing) { - SWAP16(nla->nla_len); - SWAP16(nla->nla_type); - } - if (!nla->nla_len) - break; - } -} - -static struct nl_msg * -wprobe_msg_from_network(int socket, int len) -{ - struct genlmsghdr *gnlh; - struct nlmsghdr *nlh; - struct nl_msg *msg; - void *data; - - msg = nlmsg_alloc_size(len + 32); - if (!msg) - return NULL; - - nlh = nlmsg_hdr(msg); - if (read(socket, nlh, len) != len) - goto free; - - swap_nlmsghdr(nlh); - if (nlh->nlmsg_len > len) - goto free; - - gnlh = nlmsg_data(nlh); - swap_genlmsghdr(gnlh); - - data = genlmsg_data(gnlh); - wprobe_swap_nested(data, genlmsg_len(gnlh), false); - - return msg; -free: - nlmsg_free(msg); - return NULL; -} - -static int -wprobe_msg_to_network(int socket, struct nl_msg *msg) -{ - struct nlmsghdr *nlh = nlmsg_hdr(msg); - struct wprobe_msg_hdr mhdr; - struct genlmsghdr *gnlh; - void *buf, *data; - int buflen, datalen; - int ret; - - buflen = nlh->nlmsg_len; - buf = malloc(buflen); - if (!buf) - return -ENOMEM; - - memset(&mhdr, 0, sizeof(mhdr)); - mhdr.status = WPROBE_MSG_DATA; - mhdr.len = buflen; - wprobe_swap_msg_hdr(&mhdr); - ret = write(socket, &mhdr, sizeof(mhdr)); - if (ret < 0) - goto out; - - memcpy(buf, nlh, buflen); - nlh = buf; - gnlh = nlmsg_data(nlh); - data = genlmsg_data(gnlh); - datalen = genlmsg_len(gnlh); - - wprobe_swap_nested(data, datalen, true); - swap_genlmsghdr(gnlh); - swap_nlmsghdr(nlh); - ret = write(socket, buf, buflen); - -out: - free(buf); - - return ret; -} - -static int -wprobe_remote_send_msg(struct wprobe_iface *dev, struct nl_msg *msg, wprobe_cb_t callback, void *arg) -{ - struct wprobe_msg_hdr mhdr; - int msgs = 0; - - wprobe_msg_to_network(dev->sockfd, msg); - nlmsg_free(msg); - do { - if (read(dev->sockfd, &mhdr, sizeof(mhdr)) != sizeof(mhdr)) { - DPRINTF("Failed to read response header\n"); - return -1; - } - wprobe_swap_msg_hdr(&mhdr); - - switch(mhdr.status) { - case WPROBE_MSG_DATA: - if (mhdr.len > WPROBE_MAX_MSGLEN) { - fprintf(stderr, "Invalid length in received response message.\n"); - exit(1); - } - - msg = wprobe_msg_from_network(dev->sockfd, mhdr.len); - if (!msg) - return -EINVAL; - - msgs++; - callback(msg, arg); - nlmsg_free(msg); - break; - } - } while (mhdr.status != WPROBE_MSG_DONE); - - if (mhdr.error) - return -mhdr.error; - else - return msgs; -} - - -static void -wprobe_socket_dev_free(struct wprobe_iface *dev) -{ - if (dev->sockfd >= 0) - close(dev->sockfd); -} - -static const struct wprobe_iface_ops wprobe_remote_ops = { - .send_msg = wprobe_remote_send_msg, - .free = wprobe_socket_dev_free, -}; - - -#ifndef NO_LOCAL_ACCESS -int -wprobe_server_init(int socket) -{ - struct wprobe_init_hdr hdr; - int ret; - - ret = wprobe_local_init(); - if (ret != 0) - return ret; - - memset(&hdr, 0, sizeof(hdr)); - memcpy(hdr.pre.magic, WPROBE_MAGIC_STR, sizeof(WPROBE_MAGIC_STR)); - hdr.pre.version = 0; - hdr.v0.genl_family = genl_family_get_id(family); - SWAP16(hdr.v0.genl_family); - write(socket, (unsigned char *)&hdr, sizeof(hdr)); - - return 0; -} - -static int -wprobe_server_cb(struct nl_msg *msg, void *arg) -{ - int *socket = arg; - int ret; - - ret = wprobe_msg_to_network(*socket, msg); - if (ret > 0) - ret = 0; - - return ret; -} - - -int -wprobe_server_handle(int socket) -{ - struct wprobe_msg_hdr mhdr; - struct nl_msg *msg; - int ret; - - ret = read(socket, &mhdr, sizeof(mhdr)); - if (ret != sizeof(mhdr)) { - if (ret <= 0) - return -1; - - DPRINTF("Failed to read request header\n"); - return -EINVAL; - } - wprobe_swap_msg_hdr(&mhdr); - - switch(mhdr.status) { - case WPROBE_MSG_DATA: - if (mhdr.len > WPROBE_MAX_MSGLEN) { - DPRINTF("Invalid length in received response message.\n"); - return -EINVAL; - } - msg = wprobe_msg_from_network(socket, mhdr.len); - break; - default: - DPRINTF("Invalid request header type\n"); - return -ENOENT; - } - - if (!msg) { - DPRINTF("Failed to get message\n"); - return -EINVAL; - } - - ret = wprobe_local_send_msg(NULL, msg, wprobe_server_cb, &socket); - - memset(&mhdr, 0, sizeof(mhdr)); - mhdr.status = WPROBE_MSG_DONE; - if (ret < 0) - mhdr.error = (uint16_t) -ret; - - ret = write(socket, (unsigned char *)&mhdr, sizeof(mhdr)); - if (ret > 0) - ret = 0; - - return ret; -} - -void -wprobe_server_done(void) -{ - wprobe_local_free(NULL); -} -#endif - -struct wprobe_iface * -wprobe_get_from_socket(int socket, const char *name) -{ - struct wprobe_iface *dev; - struct wprobe_init_hdr hdr; - - dev = wprobe_alloc_dev(); - if (!dev) - goto out; - - dev->ops = &wprobe_remote_ops; - dev->sockfd = socket; - dev->ifname = strdup(name); - - /* read version and header length */ - if (read(socket, &hdr.pre, sizeof(hdr.pre)) != sizeof(hdr.pre)) { - DPRINTF("Could not read header\n"); - goto error; - } - - /* magic not found */ - if (memcmp(hdr.pre.magic, WPROBE_MAGIC_STR, sizeof(hdr.pre.magic)) != 0) { - DPRINTF("Magic does not match\n"); - goto error; - } - - /* unsupported version */ - if (hdr.pre.version != 0) { - DPRINTF("Protocol version does not match\n"); - goto error; - } - - if (read(socket, &hdr.v0, sizeof(hdr.v0)) != sizeof(hdr.v0)) { - DPRINTF("Could not read header data\n"); - goto error; - } - - SWAP16(hdr.pre.extra); - SWAP16(hdr.v0.genl_family); - dev->genl_family = hdr.v0.genl_family; - - if (wprobe_init_dev(dev) < 0) { - DPRINTF("Could not initialize device\n"); - goto error; - } - -out: - return dev; - -error: - wprobe_free_dev(dev); - return NULL; -} - -struct wprobe_iface * -wprobe_get_auto(const char *arg, char **err) -{ - static struct sockaddr_in sa; - static char errbuf[512]; - - struct wprobe_iface *dev = NULL; - struct hostent *h; - char *devstr = strdup(arg); - char *sep = NULL; - int sock = -1; - int len; - - if (err) - *err = NULL; - - sep = strchr(devstr, ':'); - if (!sep) { -#ifndef NO_LOCAL_ACCESS - free(devstr); - return wprobe_get_dev(arg); -#else - if (err) - *err = "Invalid argument"; - goto out; -#endif - } - - *sep = 0; - sep++; - - sock = socket(AF_INET, SOCK_STREAM, 0); - if (sock < 0) - goto syserr; - - h = gethostbyname(devstr); - if (!h) { - sprintf(errbuf, "Host not found"); - goto out_err; - } - - memcpy(&sa.sin_addr, h->h_addr, h->h_length); - sa.sin_family = AF_INET; - sa.sin_port = htons(wprobe_port); - if (connect(sock, (struct sockaddr *)&sa, sizeof(sa)) < 0) - goto syserr; - - dev = wprobe_get_from_socket(sock, sep); - if (!dev) { - sprintf(errbuf, "wprobe connection initialization failed"); - goto out_err; - } - goto out; - -syserr: - if (err) { - strcpy(errbuf, "Connection failed: "); - len = strlen(errbuf); - strerror_r(errno, errbuf + len, sizeof(errbuf) - len - 1); - } -out_err: - if (err) - *err = errbuf; - if (sock >= 0) - close(sock); -out: - if (devstr) - free(devstr); - return dev; -} - -static void -free_attr_list(struct list_head *list) -{ - struct wprobe_attribute *attr, *tmp; - - list_for_each_entry_safe(attr, tmp, list, list) { - list_del(&attr->list); - free(attr); - } -} - -void -wprobe_free_dev(struct wprobe_iface *dev) -{ - if (dev->ops->free) - dev->ops->free(dev); - free_attr_list(&dev->global_attr); - free_attr_list(&dev->link_attr); - free((void *)dev->ifname); - free(dev); -} - -static struct wprobe_link * -get_link(struct list_head *list, const char *addr) -{ - struct wprobe_link *l; - - list_for_each_entry(l, list, list) { - if (!memcmp(l->addr, addr, 6)) { - list_del_init(&l->list); - goto out; - } - } - - /* no previous link found, allocate a new one */ - l = malloc(sizeof(struct wprobe_link)); - if (!l) - goto out; - - memset(l, 0, sizeof(struct wprobe_link)); - memcpy(l->addr, addr, sizeof(l->addr)); - INIT_LIST_HEAD(&l->list); - -out: - return l; -} - -struct wprobe_save_cb { - struct list_head *list; - struct list_head old_list; -}; - -static int -save_link_handler(struct nl_msg *msg, void *arg) -{ - struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); - struct wprobe_link *link; - struct wprobe_save_cb *cb = arg; - const char *addr; - - nla_parse(tb, WPROBE_ATTR_LAST, genlmsg_attrdata(gnlh, 0), - genlmsg_attrlen(gnlh, 0), attribute_policy); - - if (!tb[WPROBE_ATTR_MAC] || (nla_len(tb[WPROBE_ATTR_MAC]) != 6)) - return -1; - - addr = nla_data(tb[WPROBE_ATTR_MAC]); - link = get_link(&cb->old_list, addr); - if (!link) - return -1; - - if (tb[WPROBE_ATTR_FLAGS]) - link->flags = nla_get_u32(tb[WPROBE_ATTR_FLAGS]); - - list_add_tail(&link->list, cb->list); - return 0; -} - - -int -wprobe_update_links(struct wprobe_iface *dev) -{ - struct wprobe_link *l, *tmp; - struct nl_msg *msg; - struct wprobe_save_cb cb; - int err; - - INIT_LIST_HEAD(&cb.old_list); - list_splice_init(&dev->links, &cb.old_list); - cb.list = &dev->links; - - msg = wprobe_new_msg(dev, WPROBE_CMD_GET_LINKS, true); - if (!msg) - return -ENOMEM; - - err = dev->ops->send_msg(dev, msg, save_link_handler, &cb); - if (err < 0) - return err; - - list_for_each_entry_safe(l, tmp, &cb.old_list, list) { - list_del(&l->list); - free(l); - } - - return 0; -} - - -struct wprobe_filter_data -{ - wprobe_filter_cb cb; - void *arg; - struct wprobe_filter_item *buf; - int buflen; -}; - -static int -dump_filter_handler(struct nl_msg *msg, void *arg) -{ - struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); - struct wprobe_filter_data *data = arg; - struct nlattr *p; - const char *name; - int count = 0; - int len; - - nla_parse(tb, WPROBE_ATTR_LAST, genlmsg_attrdata(gnlh, 0), - genlmsg_attrlen(gnlh, 0), attribute_policy); - - if (!tb[WPROBE_ATTR_NAME] || !tb[WPROBE_ATTR_FILTER_GROUP]) - return -1; - - name = nla_data(tb[WPROBE_ATTR_NAME]); - nla_for_each_nested(p, tb[WPROBE_ATTR_FILTER_GROUP], len) { - count++; - } - - if (data->buflen < count) { - if (data->buf) - free(data->buf); - data->buflen = count; - data->buf = malloc(sizeof(struct wprobe_filter_item) * count); - memset(data->buf, 0, sizeof(struct wprobe_filter_item) * count); - } - - count = 0; - nla_for_each_nested(p, tb[WPROBE_ATTR_FILTER_GROUP], len) { - struct wprobe_filter_item *fi; - - nla_parse(tb, WPROBE_ATTR_LAST, nla_data(p), - nla_len(p), attribute_policy); - - if (!tb[WPROBE_ATTR_NAME] || !tb[WPROBE_ATTR_RXCOUNT] - || !tb[WPROBE_ATTR_TXCOUNT]) - continue; - - fi = &data->buf[count++]; - strncpy(fi->name, nla_data(tb[WPROBE_ATTR_NAME]), sizeof(fi->name) - 1); - fi->name[sizeof(fi->name) - 1] = 0; - fi->rx = nla_get_u64(tb[WPROBE_ATTR_RXCOUNT]); - fi->tx = nla_get_u64(tb[WPROBE_ATTR_TXCOUNT]); - } - data->cb(data->arg, name, data->buf, count); - - return 0; -} - -int -wprobe_dump_filters(struct wprobe_iface *dev, wprobe_filter_cb cb, void *arg) -{ - struct wprobe_filter_data data; - struct nl_msg *msg; - int err; - - data.buf = 0; - data.buflen = 0; - data.cb = cb; - data.arg = arg; - - msg = wprobe_new_msg(dev, WPROBE_CMD_GET_FILTER, true); - if (!msg) - return -ENOMEM; - - err = dev->ops->send_msg(dev, msg, dump_filter_handler, &data); - if (err < 0) - return err; - - return 0; -} - -int -wprobe_apply_config(struct wprobe_iface *dev) -{ - struct nl_msg *msg; - - msg = wprobe_new_msg(dev, WPROBE_CMD_CONFIG, false); - if (!msg) - return -ENOMEM; - - if (dev->interval >= 0) - NLA_PUT_MSECS(msg, WPROBE_ATTR_INTERVAL, dev->interval); - - if (dev->filter_len < 0) { - NLA_PUT(msg, WPROBE_ATTR_FILTER, 0, NULL); - dev->filter_len = 0; - } else if (dev->filter && dev->filter_len > 0) { - NLA_PUT(msg, WPROBE_ATTR_FILTER, dev->filter_len, dev->filter); - } - dev->filter = NULL; - - dev->ops->send_msg(dev, msg, NULL, NULL); - return 0; - -nla_put_failure: - nlmsg_free(msg); - return -ENOMEM; -} - -int -wprobe_measure(struct wprobe_iface *dev) -{ - struct nl_msg *msg; - - msg = wprobe_new_msg(dev, WPROBE_CMD_MEASURE, false); - if (!msg) - return -ENOMEM; - - dev->ops->send_msg(dev, msg, NULL, NULL); - return 0; -} - -struct wprobe_request_cb { - struct list_head *list; - struct list_head old_list; - char *addr; -}; - -static int -save_attrdata_handler(struct nl_msg *msg, void *arg) -{ - struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); - struct wprobe_request_cb *cb = arg; - struct wprobe_attribute *attr; - int type, id; - - nla_parse(tb, WPROBE_ATTR_LAST, genlmsg_attrdata(gnlh, 0), - genlmsg_attrlen(gnlh, 0), attribute_policy); - - if (!tb[WPROBE_ATTR_ID]) - return -1; - - if (!tb[WPROBE_ATTR_TYPE]) - return -1; - - id = nla_get_u32(tb[WPROBE_ATTR_ID]); - list_for_each_entry(attr, &cb->old_list, list) { - if (attr->id == id) - goto found; - } - /* not found */ - return -1; - -found: - list_del_init(&attr->list); - - type = nla_get_u8(tb[WPROBE_ATTR_TYPE]); - if (type != attr->type) { - DPRINTF("WARNING: type mismatch for %s attribute '%s' (%d != %d)\n", - (cb->addr ? "link" : "global"), - attr->name, - type, attr->type); - goto out; - } - - if ((type < WPROBE_VAL_STRING) || - (type > WPROBE_VAL_U64)) - goto out; - - memset(&attr->val, 0, sizeof(attr->val)); - -#define HANDLE_INT_TYPE(_idx, _type) \ - case WPROBE_VAL_S##_type: \ - case WPROBE_VAL_U##_type: \ - attr->val.U##_type = nla_get_u##_type(tb[_idx]); \ - break - - switch(type) { - HANDLE_INT_TYPE(type, 8); - HANDLE_INT_TYPE(type, 16); - HANDLE_INT_TYPE(type, 32); - HANDLE_INT_TYPE(type, 64); - case WPROBE_VAL_STRING: - /* unimplemented */ - break; - } -#undef HANDLE_TYPE - - if (attr->flags & WPROBE_F_KEEPSTAT) { - if (tb[WPROBE_VAL_SUM]) - attr->val.s = nla_get_u64(tb[WPROBE_VAL_SUM]); - - if (tb[WPROBE_VAL_SUM_SQ]) - attr->val.ss = nla_get_u64(tb[WPROBE_VAL_SUM_SQ]); - - if (tb[WPROBE_VAL_SAMPLES]) - attr->val.n = nla_get_u32(tb[WPROBE_VAL_SAMPLES]); - - if (attr->val.n > 0) { - float avg = ((float) attr->val.s) / attr->val.n; - float stdev = sqrt((((float) attr->val.ss) / attr->val.n) - (avg * avg)); - if (isnan(stdev)) - stdev = 0.0f; - if (isnan(avg)) - avg = 0.0f; - attr->val.avg = avg; - attr->val.stdev = stdev; - } - } - -out: - list_add_tail(&attr->list, cb->list); - return 0; -} - - -int -wprobe_request_data(struct wprobe_iface *dev, const unsigned char *addr) -{ - struct wprobe_request_cb cb; - struct list_head *attrs; - struct nl_msg *msg; - int err; - - msg = wprobe_new_msg(dev, WPROBE_CMD_GET_INFO, true); - if (!msg) - return -ENOMEM; - - if (addr) { - attrs = &dev->link_attr; - NLA_PUT(msg, WPROBE_ATTR_MAC, 6, addr); - } else { - attrs = &dev->global_attr; - } - - INIT_LIST_HEAD(&cb.old_list); - list_splice_init(attrs, &cb.old_list); - cb.list = attrs; - - err = dev->ops->send_msg(dev, msg, save_attrdata_handler, &cb); - list_splice(&cb.old_list, attrs->prev); - return err; - -nla_put_failure: - nlmsg_free(msg); - return -ENOMEM; -} - - diff --git a/package/wprobe/src/user/wprobe-util.c b/package/wprobe/src/user/wprobe-util.c deleted file mode 100644 index 654442f..0000000 --- a/package/wprobe/src/user/wprobe-util.c +++ /dev/null @@ -1,450 +0,0 @@ -/* - * wprobe-test.c: Wireless probe user space test code - * Copyright (C) 2008-2009 Felix Fietkau <nbd@openwrt.org> - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version 2 - * of the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - */ - -#include <sys/types.h> -#include <sys/socket.h> -#include <sys/wait.h> -#include <arpa/inet.h> -#include <stdio.h> -#include <string.h> -#include <stdlib.h> -#include <inttypes.h> -#include <errno.h> -#include <stdint.h> -#include <getopt.h> -#include <stdbool.h> -#include <unistd.h> -#include <netdb.h> -#include <fcntl.h> -#include <signal.h> - -#include <linux/wprobe.h> -#include "wprobe.h" - -static bool simple_mode = false; - -static const char * -wprobe_dump_value(struct wprobe_attribute *attr) -{ - static char buf[128]; - -#define HANDLE_TYPE(_type, _format) \ - case WPROBE_VAL_##_type: \ - snprintf(buf, sizeof(buf), _format, attr->val._type); \ - break - - switch(attr->type) { - HANDLE_TYPE(S8, "%d"); - HANDLE_TYPE(S16, "%d"); - HANDLE_TYPE(S32, "%d"); - HANDLE_TYPE(S64, "%lld"); - HANDLE_TYPE(U8, "%d"); - HANDLE_TYPE(U16, "%d"); - HANDLE_TYPE(U32, "%d"); - HANDLE_TYPE(U64, "%lld"); - case WPROBE_VAL_STRING: - /* FIXME: implement this */ - default: - strncpy(buf, "<unknown>", sizeof(buf)); - break; - } - if ((attr->flags & WPROBE_F_KEEPSTAT) && - (attr->val.n > 0)) { - int len = strlen(buf); - if (simple_mode) - snprintf(buf + len, sizeof(buf) - len, ";%.02f;%.02f;%d;%lld;%lld", attr->val.avg, attr->val.stdev, attr->val.n, attr->val.s, attr->val.ss); - else - snprintf(buf + len, sizeof(buf) - len, " (avg: %.02f; stdev: %.02f, n=%d)", attr->val.avg, attr->val.stdev, attr->val.n); - } -#undef HANDLE_TYPE - - return buf; -} - - -static void -wprobe_dump_data(struct wprobe_iface *dev) -{ - struct wprobe_attribute *attr; - struct wprobe_link *link; - bool first = true; - - if (!simple_mode) - fprintf(stdout, "\n"); - wprobe_request_data(dev, NULL); - list_for_each_entry(attr, &dev->global_attr, list) { - if (simple_mode) { - if (first) - fprintf(stdout, "[global]\n"); - fprintf(stdout, "%s=%s\n", attr->name, wprobe_dump_value(attr)); - } else { - fprintf(stdout, (first ? - "Global: %s=%s\n" : - " %s=%s\n"), - attr->name, - wprobe_dump_value(attr) - ); - } - first = false; - } - - list_for_each_entry(link, &dev->links, list) { - first = true; - wprobe_request_data(dev, link->addr); - list_for_each_entry(attr, &dev->link_attr, list) { - if (first) { - fprintf(stdout, - (simple_mode ? - "[%02x:%02x:%02x:%02x:%02x:%02x]\n%s=%s\n" : - "%02x:%02x:%02x:%02x:%02x:%02x: %s=%s\n"), - link->addr[0], link->addr[1], link->addr[2], - link->addr[3], link->addr[4], link->addr[5], - attr->name, - wprobe_dump_value(attr)); - first = false; - } else { - fprintf(stdout, - (simple_mode ? "%s=%s\n" : - " %s=%s\n"), - attr->name, - wprobe_dump_value(attr)); - } - } - } - fflush(stdout); -} - -static const char *attr_typestr[] = { - [0] = "Unknown", - [WPROBE_VAL_STRING] = "String", - [WPROBE_VAL_U8] = "Unsigned 8 bit", - [WPROBE_VAL_U16] = "Unsigned 16 bit", - [WPROBE_VAL_U32] = "Unsigned 32 bit", - [WPROBE_VAL_U64] = "Unsigned 64 bit", - [WPROBE_VAL_S8] = "Signed 8 bit", - [WPROBE_VAL_S16] = "Signed 16 bit", - [WPROBE_VAL_S32] = "Signed 32 bit", - [WPROBE_VAL_S64] = "Signed 64 bit", -}; - -static int usage(const char *prog) -{ - fprintf(stderr, -#ifndef NO_LOCAL_ACCESS - "Usage: %s <interface>|<host>:<device>|-P [options]\n" -#else - "Usage: %s <host>:<device> [options]\n" -#endif - "\n" - "Options:\n" - " -a: Print attributes\n" - " -c: Only apply configuration\n" - " -d: Delay between measurement dumps (in milliseconds, default: 1000)\n" - " A value of 0 (zero) prints once and exits; useful for scripts\n" - " -f: Dump contents of layer 2 filter counters during measurement\n" - " -F <file>: Apply layer 2 filters from <file>\n" - " -h: This help text\n" - " -i <interval>: Set measurement interval\n" - " -m: Run measurement loop\n" - " -p: Set the TCP port for server/client (default: 17990)\n" -#ifndef NO_LOCAL_ACCESS - " -P: Run in proxy mode (listen on network)\n" -#endif - "\n" - , prog); - exit(1); -} - -static void show_attributes(struct wprobe_iface *dev) -{ - struct wprobe_attribute *attr; - if (simple_mode) - return; - list_for_each_entry(attr, &dev->global_attr, list) { - fprintf(stdout, "Global attribute: '%s' (%s)\n", - attr->name, attr_typestr[attr->type]); - } - list_for_each_entry(attr, &dev->link_attr, list) { - fprintf(stdout, "Link attribute: '%s' (%s)\n", - attr->name, attr_typestr[attr->type]); - } -} - -static void show_filter_simple(void *arg, const char *group, struct wprobe_filter_item *items, int n_items) -{ - int i; - - fprintf(stdout, "[filter:%s]\n", group); - for (i = 0; i < n_items; i++) { - fprintf(stdout, "%s=%lld;%lld\n", - items[i].name, items[i].tx, items[i].rx); - } - fflush(stdout); -} - - -static void show_filter(void *arg, const char *group, struct wprobe_filter_item *items, int n_items) -{ - int i; - fprintf(stdout, "Filter group: '%s' (tx/rx)\n", group); - for (i = 0; i < n_items; i++) { - fprintf(stdout, " - %s (%lld/%lld)\n", - items[i].name, items[i].tx, items[i].rx); - } -} - -static void loop_measurement(struct wprobe_iface *dev, bool print_filters, unsigned long delay) -{ - do { - wprobe_update_links(dev); - wprobe_dump_data(dev); - if (print_filters) - wprobe_dump_filters(dev, simple_mode ? show_filter_simple : show_filter, NULL); - usleep(delay * 1000); - } - while (delay); -} - -static void set_filter(struct wprobe_iface *dev, const char *filename) -{ - unsigned char *buf = NULL; - unsigned int buflen = 0; - unsigned int len = 0; - int fd; - - /* clear filter */ - if (filename[0] == 0) { - dev->filter_len = -1; - return; - } - - fd = open(filename, O_RDONLY); - if (fd < 0) { - perror("open filter"); - return; - } - - do { - int rlen; - - if (!buf) { - len = 0; - buflen = 1024; - buf = malloc(1024); - } else { - buflen *= 2; - buf = realloc(buf, buflen); - } - rlen = read(fd, buf + len, buflen - len); - if (rlen < 0) - break; - - len += rlen; - } while (len == buflen); - - dev->filter = buf; - dev->filter_len = len; - close(fd); -} - -#ifndef NO_LOCAL_ACCESS - -static void sigchld_handler(int s) -{ - while (waitpid(-1, NULL, WNOHANG) > 0); -} - -static int run_proxy(int port) -{ - struct sockaddr_in sa; - struct sigaction sig; - int v = 1; - int s; - - s = socket(AF_INET, SOCK_STREAM, 0); - if (s < 0) { - perror("socket"); - return 1; - } - - sig.sa_handler = sigchld_handler; // Signal Handler fuer Zombie Prozesse - sigemptyset(&sig.sa_mask); - sig.sa_flags = SA_RESTART; - sigaction(SIGCHLD, &sig, NULL); - - memset(&sa, 0, sizeof(sa)); - sa.sin_family = AF_INET; - sa.sin_addr.s_addr = htonl(INADDR_ANY); - sa.sin_port = htons(wprobe_port); - - setsockopt(s, SOL_SOCKET, SO_REUSEADDR, &v, sizeof(v)); - if (bind(s, (struct sockaddr *) &sa, sizeof(sa)) < 0) { - perror("bind"); - return 1; - } - if (listen(s, 10)) { - perror("listen"); - return 1; - } - while(1) { - unsigned int addrlen = sizeof(struct sockaddr_in); - int ret, c; - - c = accept(s, (struct sockaddr *)&sa, &addrlen); - if (c < 0) { - if (errno == EINTR) - continue; - - perror("accept"); - return 1; - } - if (fork() == 0) { - /* close server socket, stdin, stdout, stderr */ - close(s); - close(0); - close(1); - close(2); - - wprobe_server_init(c); - do { - ret = wprobe_server_handle(c); - } while (ret >= 0); - wprobe_server_done(); - close(c); - exit(0); - } - close(c); - } - - return 0; -} -#endif - -int main(int argc, char **argv) -{ - struct wprobe_iface *dev = NULL; - const char *ifname; - const char *prog = argv[0]; - char *err = NULL; - enum { - CMD_NONE, - CMD_CONFIG, - CMD_MEASURE, - CMD_PROXY, - } cmd = CMD_NONE; - const char *filter = NULL; - bool print_attributes = false; - bool print_filters = false; - unsigned long delay = 1000; - int interval = -1; - int ch; - - if (argc < 2) - return usage(prog); - -#ifndef NO_LOCAL_ACCESS - if (!strcmp(argv[1], "-P")) { - while ((ch = getopt(argc - 1, argv + 1, "p:")) != -1) { - switch(ch) { - case 'p': - /* set port */ - wprobe_port = strtoul(optarg, NULL, 0); - break; - default: - return usage(prog); - } - } - return run_proxy(wprobe_port); - } -#endif - - if (argv[1][0] == '-') - return usage(prog); - - ifname = argv[1]; - argv++; - argc--; - - while ((ch = getopt(argc, argv, "acd:fF:hi:msp:")) != -1) { - switch(ch) { - case 'a': - print_attributes = true; - break; - case 'c': - cmd = CMD_CONFIG; - break; - case 'd': - delay = strtoul(optarg, NULL, 10); - break; - case 'm': - cmd = CMD_MEASURE; - break; - case 'i': - interval = strtoul(optarg, NULL, 10); - break; - case 'f': - print_filters = true; - break; - case 'F': - if (filter) { - fprintf(stderr, "Cannot set multiple filters\n"); - return usage(prog); - } - filter = optarg; - break; - case 's': - simple_mode = true; - break; - case 'p': - /* set port */ - wprobe_port = strtoul(optarg, NULL, 0); - break; - case 'h': - default: - usage(prog); - break; - } - } - - dev = wprobe_get_auto(ifname, &err); - if (!dev || (list_empty(&dev->global_attr) && - list_empty(&dev->link_attr))) { - if (err) - fprintf(stdout, "%s\n", err); - else - fprintf(stderr, "Interface '%s' not found\n", ifname); - return 1; - } - - if (filter || interval >= 0) { - if (filter) - set_filter(dev, filter); - if (interval >= 0) - dev->interval = interval; - - wprobe_apply_config(dev); - } - - if (cmd != CMD_CONFIG) { - if (print_attributes) - show_attributes(dev); - } - if (cmd == CMD_MEASURE) - loop_measurement(dev, print_filters, delay); - - wprobe_free_dev(dev); - - return 0; -} diff --git a/package/wprobe/src/user/wprobe.h b/package/wprobe/src/user/wprobe.h deleted file mode 100644 index 706facc..0000000 --- a/package/wprobe/src/user/wprobe.h +++ /dev/null @@ -1,213 +0,0 @@ -/* - * wprobe.h: Wireless probe user space library - * Copyright (C) 2008-2009 Felix Fietkau <nbd@openwrt.org> - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version 2 - * of the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - */ - -#ifndef __WPROBE_USER_H -#define __WPROBE_USER_H -#include <inttypes.h> -#include <stdint.h> -#include <stdbool.h> -#include "list.h" - -/** - * struct wprobe_value: data structure for attribute values - * @STRING: string value (currently unsupported) - * @U8: unsigned 8-bit integer value - * @U16: unsigned 16-bit integer value - * @U32: unsigned 32-bit integer value - * @U64: unsigned 64-bit integer value - * @S8: signed 8-bit integer value - * @S16: signed 16-bit integer value - * @S32: signed 32-bit integer value - * @S64: signed 64-bit integer value - * - * @n: number of sample values - * @avg: average value - * @stdev: standard deviation - * @s: sum of all sample values (internal use) - * @ss: sum of all sample values squared (internal use) - */ -struct wprobe_value { - /* attribute value */ - union { - const char *STRING; - uint8_t U8; - uint16_t U16; - uint32_t U32; - uint64_t U64; - int8_t S8; - int16_t S16; - int32_t S32; - int64_t S64; - }; - /* statistics */ - int64_t s, ss; - float avg, stdev; - unsigned int n; -}; - -/** - * struct wprobe_attribute: data structures for attribute descriptions - * @list: linked list data structure for a list of attributes - * @id: attribute id - * @type: netlink type for the attribute (see kernel api documentation) - * @flags: attribute flags (see kernel api documentation) - * @val: cached version of the last netlink query, will be overwritten on each request - * @name: attribute name - */ -struct wprobe_attribute { - struct list_head list; - int id; - int type; - uint32_t flags; - struct wprobe_value val; - char name[]; -}; - -/** - * struct wprobe_link: data structure for the link description - * @list: linked list data structure for a list of links - * @flags: link flags (see kernel api documentation) - * @addr: mac address of the remote link partner - */ -struct wprobe_link { - struct list_head list; - uint32_t flags; - unsigned char addr[6]; -}; - -struct wprobe_filter_item { - char name[32]; - uint64_t rx; - uint64_t tx; -}; - -struct wprobe_iface_ops; -struct wprobe_iface { - const struct wprobe_iface_ops *ops; - - int sockfd; - const char *ifname; - unsigned int genl_family; - char addr[6]; - - struct list_head global_attr; - struct list_head link_attr; - struct list_head links; - - /* config */ - int interval; - int scale_min; - int scale_max; - int scale_m; - int scale_d; - - /* filter */ - void *filter; - - /* filter_len: - * set to -1 to drop the current filter - * automatically reset to 0 after config apply - */ - int filter_len; -}; - -typedef void (*wprobe_filter_cb)(void *arg, const char *group, struct wprobe_filter_item *items, int n_items); -extern int wprobe_port; - -/** - * wprobe_update_links: get a list of all link partners - * @dev: wprobe device structure - * @list: linked list for storing link descriptions - * - * when wprobe_update_links is called multiple times, the linked list - * is updated with new link partners, old entries are automatically expired - */ -extern int wprobe_update_links(struct wprobe_iface *dev); - -/** - * wprobe_dump_filters: dump all layer 2 filter counters - * @dev: wprobe device structure - * @cb: callback (called once per filter group) - * @arg: user argument for the callback - */ -extern int wprobe_dump_filters(struct wprobe_iface *dev, wprobe_filter_cb cb, void *arg); - -/** - * wprobe_measure: start a measurement request for all global attributes - * @dev: wprobe device structure - * - * not all attributes are automatically filled with data, since for some - * it may be desirable to control the sampling interval from user space - * you can use this function to do that. - */ -extern int wprobe_measure(struct wprobe_iface *dev); - -/** - * wprobe_get_dev: get a handle to a local wprobe device - * @ifname: name of the wprobe interface - * - * queries the wprobe interface for all attributes - * must be freed with wprobe_free_dev - */ -extern struct wprobe_iface *wprobe_get_dev(const char *ifname); - -/** - * wprobe_get_auto: get a handle to a local or remote wprobe device - * @arg: pointer to the wprobe device, either <dev> (local) or <host>:<dev> (remote) - */ -extern struct wprobe_iface *wprobe_get_auto(const char *arg, char **err); - -/** - * wprobe_get_dev: free all device information - * @dev: wprobe device structure - */ -extern void wprobe_free_dev(struct wprobe_iface *dev); - -/** - * wprobe_apply_config: apply configuration data - * @dev: wprobe device structure - * - * uploads all configuration values from @dev that are not set to -1 - */ -extern int wprobe_apply_config(struct wprobe_iface *dev); - -/** - * wprobe_request_data: request new sampling values for the given list of attributes - * @dev: wprobe device structure - * @addr: (optional) mac address of the link partner - * - * if addr is unset, global values are stored in the global attributes list - * if addr is set, per-link values for the given address are stored in the link attributes list - */ -extern int wprobe_request_data(struct wprobe_iface *dev, const unsigned char *addr); - -/** - * wprobe_server_init: send a wprobe server init message to a server's client socket - * @socket: socket of the connection to the client - */ -extern int wprobe_server_init(int socket); - -/** - * wprobe_server_handle: read a request from the client socket, process it, send the response - * @socket: socket of the connection to the client - */ -extern int wprobe_server_handle(int socket); - -/** - * wprobe_server_done: release memory allocated for the server connection - */ -extern void wprobe_server_done(void); - -#endif |