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-rw-r--r--lib/libusbhid/Makefile3
-rw-r--r--lib/libusbhid/data.c35
-rw-r--r--lib/libusbhid/descr.c46
-rw-r--r--lib/libusbhid/parse.c509
-rw-r--r--lib/libusbhid/shlib_version2
-rw-r--r--lib/libusbhid/usbhid.39
-rw-r--r--lib/libusbhid/usbhid.h3
7 files changed, 394 insertions, 213 deletions
diff --git a/lib/libusbhid/Makefile b/lib/libusbhid/Makefile
index ef1ed96496f..d9bd659f7b3 100644
--- a/lib/libusbhid/Makefile
+++ b/lib/libusbhid/Makefile
@@ -1,4 +1,4 @@
-# $OpenBSD: Makefile,v 1.4 2005/11/24 20:49:23 deraadt Exp $
+# $OpenBSD: Makefile,v 1.5 2012/07/11 13:43:54 yuo Exp $
# $NetBSD: Makefile,v 1.5 1999/07/23 09:44:38 mrg Exp $
LIB= usbhid
@@ -10,6 +10,7 @@ MLINKS= usbhid.3 hid_dispose_report_desc.3 \
usbhid.3 hid_get_data.3 \
usbhid.3 hid_get_item.3 \
usbhid.3 hid_get_report_desc.3 \
+ usbhid.3 hid_get_report_id.3 \
usbhid.3 hid_init.3 \
usbhid.3 hid_start.3 \
usbhid.3 hid_locate.3 \
diff --git a/lib/libusbhid/data.c b/lib/libusbhid/data.c
index dd9ad515ad0..cb64f6152ea 100644
--- a/lib/libusbhid/data.c
+++ b/lib/libusbhid/data.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: data.c,v 1.3 2004/06/04 00:47:32 deraadt Exp $ */
+/* $OpenBSD: data.c,v 1.4 2012/07/11 13:43:54 yuo Exp $ */
/* $NetBSD: data.c,v 1.1 2001/12/28 17:45:26 augustss Exp $ */
/*
@@ -33,19 +33,33 @@
int
hid_get_data(const void *p, const hid_item_t *h)
{
- const unsigned char *buf = p;
- unsigned int hpos = h->pos, hsize = h->report_size;
- int data, i, end, offs;
+ const uint8_t *buf;
+ uint32_t hpos, hsize, data;
+ int i, end, offs;
+
+ buf = p;
+
+ /* skip report ID byte */
+ if (h->report_ID > 0)
+ buf++;
+
+ hpos = h->pos; /* bit position of data */
+ hsize = h->report_size; /* bit length of data */
if (hsize == 0)
return (0);
+ if (hsize > 32)
+ hsize = 32;
+
offs = hpos / 8;
end = (hpos + hsize) / 8 - offs;
data = 0;
for (i = 0; i <= end; i++)
data |= buf[offs + i] << (i*8);
+
data >>= hpos % 8;
data &= (1 << hsize) - 1;
+
if (h->logical_minimum < 0) {
/* Need to sign extend */
hsize = sizeof data * 8 - hsize;
@@ -57,10 +71,19 @@ hid_get_data(const void *p, const hid_item_t *h)
void
hid_set_data(void *p, const hid_item_t *h, int data)
{
- unsigned char *buf = p;
- unsigned int hpos = h->pos, hsize = h->report_size;
+ uint32_t *buf;
+ uint32_t hpos, hsize;
int i, end, offs, mask;
+ buf = p;
+
+ /* Set report ID byte */
+ if (h->report_ID > 0)
+ *buf++ = h->report_ID & 0xff;
+
+ hpos = h->pos; /* bit position of data */
+ hsize = h->report_size; /* bit length of data */
+
if (hsize != 32) {
mask = (1 << hsize) - 1;
data &= mask;
diff --git a/lib/libusbhid/descr.c b/lib/libusbhid/descr.c
index 847763606ed..ebe34a379ff 100644
--- a/lib/libusbhid/descr.c
+++ b/lib/libusbhid/descr.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: descr.c,v 1.4 2004/06/04 00:47:32 deraadt Exp $ */
+/* $OpenBSD: descr.c,v 1.5 2012/07/11 13:43:54 yuo Exp $ */
/* $NetBSD: descr.c,v 1.2 2002/02/20 20:31:07 christos Exp $ */
/*
@@ -40,15 +40,57 @@
#include "usbhid.h"
#include "usbvar.h"
+int
+hid_get_report_id(int fd)
+{
+ report_desc_t rep;
+ hid_data_t d;
+ hid_item_t h;
+ int kindset;
+ int temp = -1;
+ int ret = -1;
+
+ if ((rep = hid_get_report_desc(fd)) == NULL)
+ goto use_ioctl;
+ kindset = 1 << hid_input | 1 << hid_output | 1 << hid_feature;
+ for (d = hid_start_parse(rep, kindset, 0); hid_get_item(d, &h); ) {
+ /* Return the first report ID we met. */
+ if (h.report_ID != 0) {
+ temp = h.report_ID;
+ break;
+ }
+ }
+ hid_end_parse(d);
+ hid_dispose_report_desc(rep);
+
+ if (temp >0)
+ return (temp);
+
+use_ioctl:
+ if(ioctl(fd, USB_GET_REPORT_ID, &temp) < 0)
+ return 0;
+ else
+ ret = temp;
+
+
+ return (ret);
+}
+
report_desc_t
hid_get_report_desc(int fd)
{
struct usb_ctl_report_desc rep;
- rep.ucrd_size = 0;
+ memset(&rep, 0, sizeof(rep));
+
if (ioctl(fd, USB_GET_REPORT_DESC, &rep) < 0)
return (NULL);
+ /* check END_COLLECTION */
+ if (((unsigned char *)rep.ucrd_data)[rep.ucrd_size -1] != 0xc0) {
+ return (NULL);
+ }
+
return hid_use_report_desc(rep.ucrd_data, (unsigned int)rep.ucrd_size);
}
diff --git a/lib/libusbhid/parse.c b/lib/libusbhid/parse.c
index 25798cbbe71..3a297dda4bb 100644
--- a/lib/libusbhid/parse.c
+++ b/lib/libusbhid/parse.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: parse.c,v 1.5 2009/07/24 11:41:15 jsg Exp $ */
+/* $OpenBSD: parse.c,v 1.6 2012/07/11 13:43:54 yuo Exp $ */
/* $NetBSD: parse.c,v 1.2 2001/12/29 20:44:22 augustss Exp $ */
/*
@@ -38,42 +38,40 @@
#include "usbvar.h"
#define MAXUSAGE 100
+#define MAXPUSH 4
+#define MAXID 64
+#define ITEMTYPES 3
+
+struct hid_pos_data {
+ int32_t rid;
+ uint32_t pos[ITEMTYPES];
+};
struct hid_data {
- u_char *start;
- u_char *end;
- u_char *p;
- hid_item_t cur;
- unsigned int usages[MAXUSAGE];
- int nusage;
- int minset;
- int logminsize;
- int multi;
- int multimax;
- int kindset;
- int reportid;
-
- /*
- * The start of collection item has no report ID set, so save
- * it until we know the ID.
- */
- hid_item_t savedcoll;
- u_char hassavedcoll;
- /*
- * Absolute data position (bits) for input/output/feature.
- * Assumes that hid_input, hid_output and hid_feature have
- * values 0, 1 and 2.
- */
- unsigned int kindpos[3];
+ const uint8_t *start;
+ const uint8_t *end;
+ const uint8_t *p;
+ struct hid_item cur[MAXPUSH];
+ struct hid_pos_data last_pos[MAXID];
+ uint32_t pos[ITEMTYPES];
+ int32_t usages_min[MAXUSAGE];
+ int32_t usages_max[MAXUSAGE];
+ int32_t usage_last; /* last seen usage */
+ uint32_t loc_size; /* last seen size */
+ uint32_t loc_count; /* last seen count */
+ uint8_t kindset; /* we have 5 kinds so 8bits are enough */
+ uint8_t pushlevel; /* current push level */
+ uint8_t ncount; /* end usage item count */
+ uint8_t icount; /* current usage item count */
+ uint8_t nusage; /* end "usages_min/max" index */
+ uint8_t iusage; /* current "usages_min/max" index */
+ uint8_t ousage; /* current "usages_min/max" offset */
+ uint8_t susage; /* usage set flags */
};
-static int min(int x, int y) { return x < y ? x : y; }
-
-static int hid_get_item_raw(hid_data_t s, hid_item_t *h);
static void
hid_clear_local(hid_item_t *c)
{
-
c->usage = 0;
c->usage_minimum = 0;
c->usage_maximum = 0;
@@ -86,8 +84,58 @@ hid_clear_local(hid_item_t *c)
c->set_delimiter = 0;
}
+static void
+hid_switch_rid(struct hid_data *s, struct hid_item *c, int32_t next_rID)
+{
+ uint8_t i, j;
+
+ /* check for same report ID - optimise */
+ if (c->report_ID == next_rID)
+ return;
+
+ /* save current position for current rID */
+ if (c->report_ID == 0) {
+ i = 0;
+ } else {
+ for (i = 1; i != MAXID; i++) {
+ if (s->last_pos[i].rid == c->report_ID)
+ break;
+ if (s->last_pos[i].rid == 0)
+ break;
+ }
+ }
+ if (i != MAXID) {
+ s->last_pos[i].rid = c->report_ID;
+ for (j = 0; j < ITEMTYPES; j++)
+ s->last_pos[i].pos[j] = s->pos[j];
+ }
+
+ /* store next report ID */
+ c->report_ID = next_rID;
+
+ /* lookup last position for next rID */
+ if (next_rID == 0) {
+ i = 0;
+ } else {
+ for (i = 1; i != MAXID; i++){
+ if (s->last_pos[i].rid == next_rID)
+ break;
+ if (s->last_pos[i].rid == 0)
+ break;
+ }
+ }
+ if (i != MAXID) {
+ s->last_pos[i].rid = next_rID;
+ for (j = 0; j < ITEMTYPES; j++)
+ s->pos[j] = s->last_pos[i].pos[j];
+ } else {
+ for (j = 0; j < ITEMTYPES; j++)
+ s->pos[j] = 0; /* Out of RID entries */
+ }
+}
+
hid_data_t
-hid_start_parse(report_desc_t d, int kindset, int id)
+hid_start_parse(report_desc_t d, int kindset, int id __unused)
{
struct hid_data *s;
@@ -98,8 +146,6 @@ hid_start_parse(report_desc_t d, int kindset, int id)
s->start = s->p = d->data;
s->end = d->data + d->size;
s->kindset = kindset;
- s->reportid = id;
- s->hassavedcoll = 0;
return (s);
}
@@ -107,200 +153,191 @@ void
hid_end_parse(hid_data_t s)
{
- while (s->cur.next) {
- hid_item_t *hi = s->cur.next->next;
- free(s->cur.next);
- s->cur.next = hi;
- }
+ if (s == NULL)
+ return;
+
free(s);
}
-int
-hid_get_item(hid_data_t s, hid_item_t *h)
+static uint8_t
+hid_get_byte(struct hid_data *s, const uint16_t wSize)
{
- int r;
+ const uint8_t *ptr;
+ uint8_t retval;
- for (;;) {
- r = hid_get_item_raw(s, h);
- if (r <= 0)
- break;
- if (h->report_ID == s->reportid || s->reportid == -1)
- break;
- }
- return (r);
+ ptr = s->p;
+
+ /* check if end is reached */
+ if (ptr == s->end)
+ return (0);
+
+ /* read out a byte */
+ retval = *ptr;
+
+ /* check if data pointer can be advanced by "wSize" bytes */
+ if ((s->end - ptr) < wSize)
+ ptr = s->end;
+ else
+ ptr += wSize;
+
+ /* update pointer */
+ s->p = ptr;
+
+ return (retval);
}
-#define REPORT_SAVED_COLL \
- do { \
- if (s->hassavedcoll) { \
- *h = s->savedcoll; \
- h->report_ID = c->report_ID; \
- s->hassavedcoll = 0; \
- return (1); \
- } \
- } while(/*LINTED*/ 0)
-
-static int
-hid_get_item_raw(hid_data_t s, hid_item_t *h)
+int
+hid_get_item(hid_data_t s, hid_item_t *h)
{
- hid_item_t *c = &s->cur, *hi, nc;
- unsigned int bTag = 0, bType = 0, bSize;
- unsigned char *data;
- hid_kind_t retkind;
- unsigned char *p;
- int dval, i;
+ hid_item_t *c;
+ unsigned int bTag, bType, bSize;
+ int32_t mask;
+ int32_t dval;
+
+ if (s == NULL)
+ return (0);
+
+ c = &s->cur[s->pushlevel];
top:
- if (s->multimax) {
- REPORT_SAVED_COLL;
- if (c->logical_minimum >= c->logical_maximum) {
- if (s->logminsize == 1)
- c->logical_minimum =(int8_t)c->logical_minimum;
- else if (s->logminsize == 2)
- c->logical_minimum =(int16_t)c->logical_minimum;
+ /* check if there is an array of items */
+ if (s->icount < s-> ncount) {
+ /* get current usage */
+ if (s->iusage < s->nusage) {
+ dval = s->usages_min[s->iusage] + s->ousage;
+ c->usage = dval;
+ s->usage_last = dval;
+ if (dval == s->usages_max[s->iusage]){
+ s->iusage++;
+ s->ousage = 0;
+ } else
+ s->ousage++;
+ } else {
+ /* Using last usage */
+ dval = s->usage_last;
}
- if (s->multi < s->multimax) {
- c->usage = s->usages[min(s->multi, s->nusage-1)];
- s->multi++;
+ s->icount++;
+
+ /*
+ * Only copy HID item, increment position and return
+ * if correct kindset!
+ */
+ if (s->kindset & (1 << c->kind)) {
*h = *c;
- /*
- * 'multimax' is only non-zero if the current
- * item kind is input/output/feature
- */
- h->pos = s->kindpos[c->kind];
- s->kindpos[c->kind] += c->report_size;
- h->next = 0;
+ h->pos = s->pos[c->kind];
+ s->pos[c->kind] += c->report_size * c->report_count;
return (1);
- } else {
- c->report_count = s->multimax;
- s->multimax = 0;
- s->nusage = 0;
- hid_clear_local(c);
}
}
- for (;;) {
- p = s->p;
- if (p >= s->end)
- return (0);
- bSize = *p++;
+ /* reset state variables */
+ s->icount = 0;
+ s->ncount = 0;
+ s->iusage = 0;
+ s->nusage = 0;
+ s->susage = 0;
+ s->ousage = 0;
+ hid_clear_local(c);
+
+ /* get next item */
+ while (s->p != s->end) {
+ bSize = hid_get_byte(s, 1);
if (bSize == 0xfe) {
/* long item */
- bSize = *p++;
- bSize |= *p++ << 8;
- bTag = *p++;
- data = p;
- p += bSize;
+ bSize = hid_get_byte(s, 1);
+ bSize |= hid_get_byte(s, 1) << 8;
+ bTag = hid_get_byte(s, 1);
+ bType = 0xff; /* XXX what shoud it be */
} else {
/* short item */
bTag = bSize >> 4;
bType = (bSize >> 2) & 3;
bSize &= 3;
- if (bSize == 3) bSize = 4;
- data = p;
- p += bSize;
+ if (bSize == 3)
+ bSize = 4;
}
- s->p = p;
- /*
- * The spec is unclear if the data is signed or unsigned.
- */
+
switch(bSize) {
case 0:
dval = 0;
+ mask = 0;
break;
case 1:
- dval = /*(int8_t)*/*data++;
+ dval = (int8_t)hid_get_byte(s, 1);
+ mask = 0xff;
break;
case 2:
- dval = *data++;
- dval |= *data++ << 8;
- dval = /*(int16_t)*/dval;
+ dval = hid_get_byte(s, 1);
+ dval |= hid_get_byte(s, 1) << 8;
+ dval = (int16_t)dval;
+ mask = 0xffff;
break;
case 4:
- dval = *data++;
- dval |= *data++ << 8;
- dval |= *data++ << 16;
- dval |= *data++ << 24;
+ dval = hid_get_byte(s, 1);
+ dval |= hid_get_byte(s, 1) << 8;
+ dval |= hid_get_byte(s, 1) << 16;
+ dval |= hid_get_byte(s, 1) << 24;
+ mask = 0xffffffff;
break;
default:
- return (-1);
+ dval = hid_get_byte(s, bSize);
+ continue;
}
switch (bType) {
case 0: /* Main */
switch (bTag) {
case 8: /* Input */
- retkind = hid_input;
+ c->kind = hid_input;
+ c->flags =dval;
ret:
- if (!(s->kindset & (1 << retkind))) {
- /* Drop the items of this kind */
- s->nusage = 0;
- continue;
- }
- c->kind = retkind;
- c->flags = dval;
+ c->report_count = s->loc_count;
+ c->report_size = s->loc_size;
+
if (c->flags & HIO_VARIABLE) {
- s->multimax = c->report_count;
- s->multi = 0;
+ /* range check usage count */
+ if (c->report_count > 255) {
+ s->ncount = 255;
+ } else
+ s->ncount = c->report_count;
+
+ /*
+ * The "top" loop will return
+ * one and on item:
+ */
c->report_count = 1;
- if (s->minset) {
- for (i = c->usage_minimum;
- i <= c->usage_maximum; i++) {
- s->usages[s->nusage] = i;
- if (s->nusage < MAXUSAGE-1)
- s->nusage++;
- }
- c->usage_minimum = 0;
- c->usage_maximum = 0;
- s->minset = 0;
- }
- goto top;
+ c->usage_minimum = 0;
+ c->usage_maximum = 0;
} else {
- if (s->minset)
- c->usage = c->usage_minimum;
- *h = *c;
- h->next = 0;
- h->pos = s->kindpos[c->kind];
- s->kindpos[c->kind] +=
- c->report_size * c->report_count;
- hid_clear_local(c);
- s->minset = 0;
- return (1);
+ s->ncount = 1;
}
+ goto top;
case 9: /* Output */
- retkind = hid_output;
+ c->kind = hid_output;
+ c->flags = dval;
goto ret;
case 10: /* Collection */
c->kind = hid_collection;
c->collection = dval;
c->collevel++;
- nc = *c;
- hid_clear_local(c);
- /*c->report_ID = NO_REPORT_ID;*/
- s->nusage = 0;
- if (s->hassavedcoll) {
- *h = s->savedcoll;
- h->report_ID = nc.report_ID;
- s->savedcoll = nc;
- return (1);
- } else {
- s->hassavedcoll = 1;
- s->savedcoll = nc;
- }
- break;
+ c->usage = s->usage_last;
+ *h = *c;
+ return (1);
case 11: /* Feature */
- retkind = hid_feature;
+ c->kind = hid_feature;
+ c->flags = dval;
goto ret;
case 12: /* End collection */
- REPORT_SAVED_COLL;
c->kind = hid_endcollection;
+ if (c->collevel == 0){
+ /* invalid end collection */
+ return (0);
+ }
c->collevel--;
*h = *c;
- /*hid_clear_local(c);*/
- s->nusage = 0;
return (1);
default:
- return (-2);
+ break;
}
break;
@@ -311,7 +348,6 @@ hid_get_item_raw(hid_data_t s, hid_item_t *h)
break;
case 1:
c->logical_minimum = dval;
- s->logminsize = bSize;
break;
case 2:
c->logical_maximum = dval;
@@ -323,52 +359,102 @@ hid_get_item_raw(hid_data_t s, hid_item_t *h)
c->physical_maximum = dval;
break;
case 5:
- c->unit_exponent = dval;
+ if (dval > 7 && dval < 0x10)
+ c->unit_exponent = -16 + dval;
+ else
+ c->unit_exponent = dval;
break;
case 6:
c->unit = dval;
break;
case 7:
- c->report_size = dval;
+ /* mask because value is unsigned */
+ s->loc_size = dval & mask;
break;
case 8:
- c->report_ID = dval;
- s->kindpos[hid_input] = 0;
- s->kindpos[hid_output] = 0;
- s->kindpos[hid_feature] = 0;
+ hid_switch_rid(s, c, dval);
break;
case 9:
- c->report_count = dval;
+ /* mask because value is unsigned */
+ s->loc_count = dval & mask;
break;
case 10: /* Push */
- hi = malloc(sizeof *hi);
- /* XXX unchecked malloc */
- *hi = s->cur;
- c->next = hi;
+ s->pushlevel++;
+ if (s->pushlevel < MAXPUSH) {
+ s->cur[s->pushlevel] = *c;
+ /* store size and count */
+ c->report_size = s->loc_size;
+ c->report_count = s->loc_count;
+ /* update current item pointer */
+ c = &s->cur[s->pushlevel];
+ }
break;
case 11: /* Pop */
- hi = c->next;
- s->cur = *hi;
- free(hi);
+ s->pushlevel--;
+ if (s->pushlevel < MAXPUSH) {
+ c = &s->cur[s->pushlevel];
+ /* restore size and count */
+ s->loc_size = c->report_size;
+ s->loc_count = c->report_count;
+ c->report_size = 0;
+ c->report_count = 0;
+ }
break;
default:
- return (-3);
+ break;
}
break;
case 2: /* Local */
switch (bTag) {
case 0:
- c->usage = c->_usage_page | dval;
- if (s->nusage < MAXUSAGE)
- s->usages[s->nusage++] = c->usage;
+ if (bSize != 4)
+ dval = (dval & mask) | c->_usage_page;
+
+ /* set last usage, in case of a collection */
+ s->usage_last = dval;
+
+ if (s->nusage < MAXUSAGE) {
+ s->usages_min[s->nusage] = dval;
+ s->usages_max[s->nusage] = dval;
+ s->nusage++;
+ }
/* else XXX */
+
+ /* clear any pending usage sets */
+ s->susage = 0;
break;
case 1:
- s->minset = 1;
- c->usage_minimum = c->_usage_page | dval;
- break;
+ s->susage |= 1;
+
+ if (bSize != 4)
+ dval = (dval & mask) | c->_usage_page;
+ c->usage_minimum = dval;
+
+ goto check_set;
case 2:
- c->usage_maximum = c->_usage_page | dval;
+ s->susage |= 2;
+
+ if (bSize != 4)
+ dval = (dval & mask) | c->_usage_page;
+ c->usage_maximum = dval;
+
+ check_set:
+ if (s->susage != 3)
+ break;
+
+ /* sanity check */
+ if ((s->nusage < MAXUSAGE) &&
+ (c->usage_minimum <= c->usage_maximum)){
+ /* add usage range */
+ s->usages_min[s->nusage] =
+ c->usage_minimum;
+ s->usages_max[s->nusage] =
+ c->usage_maximum;
+ s->nusage++;
+ }
+ /* else XXX */
+
+ s->susage = 0;
break;
case 3:
c->designator_index = dval;
@@ -392,40 +478,63 @@ hid_get_item_raw(hid_data_t s, hid_item_t *h)
c->set_delimiter = dval;
break;
default:
- return (-4);
+ break;
}
break;
default:
- return (-5);
+ break;
}
}
+ return (0);
}
int
hid_report_size(report_desc_t r, enum hid_kind k, int id)
{
struct hid_data *d;
- hid_item_t h;
- int size;
+ struct hid_item h;
+ uint32_t temp;
+ uint32_t hpos;
+ uint32_t lpos;
+ int report_id = 0;
+
+ hpos = 0;
+ lpos = 0xffffffff;
memset(&h, 0, sizeof h);
- size = 0;
for (d = hid_start_parse(r, 1<<k, id); hid_get_item(d, &h); ) {
- if (h.report_ID == id && h.kind == k) {
- size = d->kindpos[k];
+ if ((h.report_ID == id || id < 0) && h.kind == k) {
+ /* compute minimum */
+ if (lpos > h.pos)
+ lpos = h.pos;
+ /* compute end position */
+ temp = h.pos + (h.report_size * h.report_count);
+ /* compute maximum */
+ if (hpos < temp)
+ hpos = temp;
+ if (h.report_ID != 0)
+ report_id = 1;
}
}
hid_end_parse(d);
- return ((size + 7) / 8);
+
+ /* safety check - can happen in case of currupt descriptors */
+ if (lpos > hpos)
+ temp = 0;
+ else
+ temp = hpos - lpos;
+
+ /* return length in bytes rounded up */
+ return ((temp + 7) / 8 + report_id);
}
int
hid_locate(report_desc_t desc, unsigned int u, enum hid_kind k,
hid_item_t *h, int id)
{
- hid_data_t d;
+ struct hid_data *d;
- for (d = hid_start_parse(desc, 1<<k, id); hid_get_item(d, h); ) {
+ for (d = hid_start_parse(desc, 1 << k, id); hid_get_item(d, h); ) {
if (h->kind == k && !(h->flags & HIO_CONST) && h->usage == u) {
hid_end_parse(d);
return (1);
diff --git a/lib/libusbhid/shlib_version b/lib/libusbhid/shlib_version
index 012c14171d3..d9961ea9fef 100644
--- a/lib/libusbhid/shlib_version
+++ b/lib/libusbhid/shlib_version
@@ -1,2 +1,2 @@
-major=3
+major=4
minor=0
diff --git a/lib/libusbhid/usbhid.3 b/lib/libusbhid/usbhid.3
index ed883720e73..e8a812f8abe 100644
--- a/lib/libusbhid/usbhid.3
+++ b/lib/libusbhid/usbhid.3
@@ -1,4 +1,4 @@
-.\" $OpenBSD: usbhid.3,v 1.11 2012/02/19 15:48:48 stsp Exp $
+.\" $OpenBSD: usbhid.3,v 1.12 2012/07/11 13:43:54 yuo Exp $
.\" $NetBSD: usbhid.3,v 1.5 2002/02/07 07:00:52 ross Exp $
.\"
.\" Copyright (c) 1999, 2001 Lennart Augustsson <augustss@netbsd.org>
@@ -25,12 +25,13 @@
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
-.Dd $Mdocdate: February 19 2012 $
+.Dd $Mdocdate: July 11 2012 $
.Dt USBHID 3
.Os
.Sh NAME
.Nm usbhid ,
.Nm hid_get_report_desc ,
+.Nm hid_get_report_id ,
.Nm hid_use_report_desc ,
.Nm hid_dispose_report_desc ,
.Nm hid_start_parse ,
@@ -51,6 +52,8 @@
.Fd #include \*[Lt]usbhid.h\*[Gt]
.Ft report_desc_t
.Fn hid_get_report_desc "int file"
+.Ft int
+.Fn hid_get_report_id "int file"
.Ft report_desc_t
.Fn hid_use_report_desc "unsigned char *data" "unsigned int size"
.Ft void
@@ -97,6 +100,8 @@ The routines can be divided into four parts: extraction of the descriptor,
parsing of the descriptor, translating to/from symbolic names, and
data manipulation.
.Ss DESCRIPTOR FUNCTIONS
+The report descripor ID can be obtained by calling
+.Fn hid_get_report_id .
A report descriptor can be obtained by calling
.Fn hid_get_report_desc
with a file descriptor obtained by opening a
diff --git a/lib/libusbhid/usbhid.h b/lib/libusbhid/usbhid.h
index 4b98482c6c0..0ebe53dad77 100644
--- a/lib/libusbhid/usbhid.h
+++ b/lib/libusbhid/usbhid.h
@@ -1,4 +1,4 @@
-/* $OpenBSD: usbhid.h,v 1.3 2004/06/04 00:47:32 deraadt Exp $ */
+/* $OpenBSD: usbhid.h,v 1.4 2012/07/11 13:43:54 yuo Exp $ */
/* $NetBSD: usbhid.h,v 1.1 2001/12/28 17:45:27 augustss Exp $ */
/*
@@ -78,6 +78,7 @@ typedef struct hid_item {
#define HID_USAGE(u) ((u) & 0xffff)
/* Obtaining a report descriptor, descr.c: */
+int hid_get_report_id(int file);
report_desc_t hid_get_report_desc(int file);
report_desc_t hid_use_report_desc(unsigned char *data, unsigned int size);
void hid_dispose_report_desc(report_desc_t);