p80211types.c

来自「Linux的无线局域网方案是一个Linux设备驱动程序和子系统 一揽子方案的用」· C语言 代码 · 共 2,432 行 · 第 1/5 页

*	textbuf		(out) character buffer to receive textual
*			representation.
*
* Returns: 
*	nothing
*
* Side effects:
*	Writes the converted value to the buffer pointed at by
*	textbuf.
----------------------------------------------------------------*/
void p80211_totext_enumint( catlistitem_t *metalist, UINT32 did, UINT8 *itembuf, char *textbuf )
{
	p80211meta_t		*meta = NULL;
	p80211itemd_t		*item = (p80211itemd_t*)itembuf;
	p80211enumpair_t	*enumlist = NULL;
	INT			nitems;
	INT			n;
	INT			found;

	*textbuf = '\0';

	/* collect the metadata item */
	if ( (meta = p80211_did2item(metalist, did)) != NULL ) {
		if ( item->status == P80211ENUM_msgitem_status_data_ok ) {

			nitems = meta->enumptr->nitems;
			enumlist = meta->enumptr->list;

			if ( item->did != 0UL ) {
				for ( n=0, found = 0;
					(!found) && (n < nitems); n++ ) {
					if ( enumlist[n].val ==
						(*((UINT32 *)(item->data))) ) {
						/* now, print the data item
						name and enum text value 
						into textbuf */
						sprintf( textbuf, "%s=%s",
							meta->name,
							enumlist[n].name );
						found = 1;
					}
				}

				if ( !found ) {
					char	error_msg[MSG_BUFF_LEN];

					p80211_error2text(
					P80211ENUM_msgitem_status_invalid_itemdata,
					error_msg);
					sprintf( textbuf, "%s=\"%s\"",
						meta->name, error_msg);
				}
			} else {
				sprintf( textbuf, "%s=%s", meta->name,
					NOT_SUPPORTED);
			}
		} else {
			char		error_msg[MSG_BUFF_LEN];

			p80211_error2text( item->status, error_msg);
			sprintf( textbuf, "%s=\"%s\"", meta->name,
				error_msg);
		}
	} else {
		char		error_msg[MSG_BUFF_LEN];

		p80211_error2text( P80211ENUM_msgitem_status_invalid_msg_did,
			error_msg);
		sprintf( textbuf, "0x%08lx=\"%s\"", did,
			error_msg);
	}

	return;
}


/*----------------------------------------------------------------
* p80211_fromtext_enumint
*
* <valuename> ==> UINT32
*
* Converts a C string containing the "<item name>=<item value>" format
* to a wlan data item triple.
*
* The C string format  is always  "<item name>=<item value>".
*
* Arguments:
*	metalist	pointer to a category metadata list
*	did		complete, validated, DID.
*	itembuf		(out>item triple {DID, len, value}.
*	textbuf		character buffer to receive textual
*			representation.
*
* Returns: 
*	nothing
*
* Side effects:
*	Writes the converted value to the buffer pointed at by
*	itembuf.
----------------------------------------------------------------*/
void p80211_fromtext_enumint( catlistitem_t *metalist, UINT32 did, UINT8 *itembuf, char *textbuf )
{
	p80211meta_t		*meta = NULL;
	p80211itemd_t		*item = (p80211itemd_t*)itembuf;
	p80211enumpair_t	*enumlist = NULL;
	INT			nitems;
	INT			n;
	INT			found;

	/* collect the metadata item */
	if ( (meta = p80211_did2item(metalist, did)) != NULL ) {
		nitems = meta->enumptr->nitems;
		enumlist = meta->enumptr->list;

		/* set the DID and OR in the partial DID for safety */
		item->did = did | meta->did;
		item->len = p80211item_maxdatalen(metalist, item->did);

		/* skip past the item name to its value before converting */
		textbuf = strchr(textbuf, '=');

		if ( textbuf != NULL ) {
			/* OK, got the '=', bump to the next */
			textbuf++;

			for ( n=0, found = 0; (!found) && (n < nitems); n++ ) {
				if ( strcmp(enumlist[n].name, textbuf) == 0 ) {
					*((UINT32 *)(item->data)) =
						enumlist[n].val;
					item->status =
					P80211ENUM_msgitem_status_data_ok;
					found = 1;
				}
			}

			if ( !found ) {
				*((UINT32 *)(item->data)) = P80211ENUM_BAD;
				item->status =
					P80211ENUM_msgitem_status_invalid_itemdata;
			}
		} else {
			/* bogus text string, set the item data value to zero */
			*((UINT32 *)(item->data)) = 0UL;
			item->status = P80211ENUM_msgitem_status_missing_itemdata;
		}
	} else {
		item->did = did;
		item->len = sizeof(UINT32);
		item->status = P80211ENUM_msgitem_status_invalid_itemname;
	}
	return;
}


/*----------------------------------------------------------------
* p80211_isvalid_enumint
*
* Tests an item triple for valid range.  Uses the validation
* information in the metadata.  Enumint's are validated against
* their enumeration structure.
*
* Arguments:
*	metalist	pointer to a category metadata list
*	did		complete, validated, DID.
*	itembuf		item triple {DID, len, value}.
*
* Returns: 
*	0	- data in itembuf is invalid
*	~0	- data in itembuf is valid
----------------------------------------------------------------*/
UINT32 p80211_isvalid_enumint( catlistitem_t *metalist, UINT32 did, UINT8 *itembuf )
{
	UINT32		result = 0;
	p80211meta_t	*meta;
	p80211itemd_t	*item = (p80211itemd_t*)itembuf;

	if ( item->status == P80211ENUM_msgitem_status_data_ok ) {
		/* collect the metadata item */
		if ( (meta = p80211_did2item(metalist, did)) != NULL ) {
			if ( (*((UINT32 *)(item->data))) != P80211ENUM_BAD ) {
				result = 1;
			} else {
				item->status =
					P80211ENUM_msgitem_status_invalid_itemdata;
			}
		} else {
			item->status = P80211ENUM_msgitem_status_invalid_did;
		}
	}

	return result;
}


/*----------------------------------------------------------------
* p80211_totext_getmibattribute
*
* Converts the mibattribute of a "mibget" message into
* a text string.  The DATA portion of the mibattribute's
* "DID-LEN-DATA" triple is itself a "DID-LEN-DATA" triple storing
* the mib item's did, length and data.  In other words:
*
* DID-LEN-DATA
*           ^
*           |__________ where DATA = DID-LEN-DATA for a MIB Item
*
* If message text format is:
*      "mibattribute=<mibitemname>=<mibvalue>"
*
* Arguments:
*	metalist	pointer to a category metadata list
*	did		complete, validated, DID.
*	itembuf		item triple {DID, len, value}.
*	textbuf		(out) character buffer to receive textual
*			representation.
*
* Returns: 
*	nothing
*
* Side effects:
*	Writes the converted mib value to the buffer pointed at by
*	textbuf.
----------------------------------------------------------------*/
void p80211_totext_getmibattribute( catlistitem_t *metalist, UINT32 did, UINT8 *itembuf, char *textbuf )
{
	char		tmpbuf[MSG_BUFF_LEN];
	UINT32		mibdid;
	p80211meta_t	*meta = NULL;
	p80211meta_t	*mibmeta = NULL;
	p80211itemd_t	*item = (p80211itemd_t*)itembuf;

	*textbuf = '\0';

	/* get the metadata item */
	if ( (meta = p80211_did2item(metalist, did)) != NULL ) {
		if ( item->status == P80211ENUM_msgitem_status_data_ok ) {
			mibdid = *((UINT32 *)(item->data));
			if ( (mibmeta =
				p80211_did2item(mib_catlist,mibdid)) != NULL ) {
				if ( item->did != 0UL ) {
					if ( mibmeta->totextptr != NULL) {
						(*(mibmeta->totextptr))
						(mib_catlist, mibdid,
						item->data, tmpbuf);
						/* now, print to the textbuf */
						sprintf( textbuf,
							"%s=%s",meta->name,
							tmpbuf);
					} else {
						sprintf( textbuf,
							"%s=%s=%s",
							meta->name,
							mibmeta->name,
							NOT_SUPPORTED);
					}
				} else {
					sprintf( textbuf, "%s=%s=%s",
						meta->name, mibmeta->name,
						NOT_SUPPORTED);
				}
			} else {
				char		error_msg[MSG_BUFF_LEN];

				p80211_error2text(
					P80211ENUM_msgitem_status_invalid_mib_did,
					error_msg);
				sprintf( textbuf, "0x%08lx=\"%s\"", mibdid,
					error_msg);
			}
		} else {
			char		error_msg[MSG_BUFF_LEN];

			p80211_error2text( item->status, error_msg);
			sprintf( textbuf, "%s=\"%s\"", meta->name,
				error_msg);
		}
	} else {
		char		error_msg[MSG_BUFF_LEN];

		p80211_error2text( P80211ENUM_msgitem_status_invalid_msg_did,
			error_msg);
		sprintf( textbuf, "0x%08lx=\"%s\"", did,
			error_msg);
	}

	return;
}


/*----------------------------------------------------------------
* p80211_totext_setmibattribute
*
* Converts the mibattribute of a "mibset" message into
* a text string.  The DATA portion of the mibattribute's
* "DID-LEN-DATA" triple is itself a "DID-LEN-DATA" triple storing
* the mib item's did, length and data.  In other words:
*
* DID-LEN-DATA
*           ^
*           |__________ where DATA = DID-LEN-DATA for a MIB Item
*
* If message text format is:
*      "mibattribute=<mibitemname>=<mibvalue>"
*
* Arguments:
*	metalist	pointer to a category metadata list
*	did		complete, validated, DID.
*	itembuf		item triple {DID, len, value}.
*	textbuf		(out) character buffer to receive textual
*			representation.
*
* Returns: 
*	nothing
*
* Side effects:
*	Writes the converted mib value to the buffer pointed at by
*	textbuf.
----------------------------------------------------------------*/
void p80211_totext_setmibattribute( catlistitem_t *metalist, UINT32 did, UINT8 *itembuf, char *textbuf )
{
	char		tmpbuf[MSG_BUFF_LEN];
	UINT32		mibdid;
	p80211meta_t	*meta = NULL;
	p80211meta_t	*mibmeta = NULL;
	p80211itemd_t	*item = (p80211itemd_t*)itembuf;

	*textbuf = '\0';

	/* get the metadata item */
	if ( (meta = p80211_did2item(metalist, did)) != NULL ) {
		if ( item->status == P80211ENUM_msgitem_status_data_ok ) {
			mibdid = *((UINT32 *)(item->data));
			if ( (mibmeta =
				p80211_did2item(mib_catlist,mibdid)) != NULL ) {
				if ( item->did != 0UL ) {
					if ( mibmeta->totextptr != NULL) {
						(*(mibmeta->totextptr))
						(mib_catlist, mibdid,
						item->data, tmpbuf);
						/* now, print to the textbuf */
						sprintf( textbuf,
							"%s=%s",meta->name,
							tmpbuf);
					} else {
						sprintf( textbuf,
							"%s=%s=%s",
							meta->name,
							mibmeta->name,
							NOT_SUPPORTED);
					}
				} else {
					sprintf( textbuf, "%s=%s=%s",
						meta->name, mibmeta->name,
						NOT_SUPPORTED);
				}
			} else {
				char		error_msg[MSG_BUFF_LEN];

				p80211_error2text(
					P80211ENUM_msgitem_status_invalid_mib_did,
					error_msg);
				sprintf( textbuf, "0x%08lx=\"%s\"", mibdid,
					error_msg);
			}
		} else {
			char		error_msg[MSG_BUFF_LEN];

			p80211_error2text( item->status, error_msg);
			sprintf( textbuf, "%s=\"%s\"", meta->name,
				error_msg);
		}
	} else {
		char		error_msg[MSG_BUFF_LEN];

		p80211_error2text( P80211ENUM_msgitem_status_invalid_msg_did,
			error_msg);
		sprintf( textbuf, "0x%08lx=\"%s\"", did,
			error_msg);
	}

	return;
}


/*----------------------------------------------------------------
* p80211_fromtext_getmibattribute
*
* If message is mibget, then the text format is:
*      "mibattribute=<mibitemname>"
* If message is mibset, then the text format is:
*      "mibattribute=<mibitemname>=<mibvalue>"
*
* Takes the mibattribute argument of a "mibget" message, and coverts
* the mib item name into a mib DID and converts the mib's value.
*
* The DATA portion of the mibattribute's "DID-LEN-DATA" triple is
* itself a "DID-LEN-DATA" triple storing the mib item's did, length
* and data.  In other words:
*
* DID-LEN-DATA
*           ^
*           |__________ where DATA = DID-LEN-DATA for a MIB Item
*
* Arguments:
*	metalist	pointer to a category metadata list
*	did		complete, validated, DID.
*	itembuf		(out>item triple {DID, len, value}.
*	textbuf		character buffer to receive textual
*			representation.
*
* Returns: 
*	nothing
*
* Side effects:
*	Writes the MIB DID to the buffer pointed at by
*	itembuf.
----------------------------------------------------------------*/
void p80211_fromtext_getmibattribute( catlistitem_t *metalist, UINT32 did, UINT8 *itembuf, char *textbuf )
{
	p80211meta_t		*meta;
	p80211meta_t		*mibmeta;
	p80211itemd_t		*item = (p80211itemd_t*)itembuf;
	char			*mibstr;
	UINT32			mibdid;

	/* collect the metadata item */
	if ( (meta = p80211_did2item(metalist, did)) != NULL ) {
		/* set the DID (OR in the partial DID for safety)
		and set the length */
		item->did = did | meta->did;
		item->len = p80211item_maxdatalen(metalist, item->did);

		/* collect the mib item name */
		textbuf = strchr(textbuf, '=');

		if ( textbuf == NULL ) {
			*((UINT32 *)(item->data)) = 0UL;
			item->status = P80211ENUM_msgitem_status_missing_itemdata;
			return;
		}

		textbuf++;
		mibstr = textbuf;

		/* get DID of mib item based on mib name */
		mibdid = p80211_metaname2did(mib_catlist,mibstr);

		if ( mibdid != 0UL ) {
			if ( (mibmeta = p80211_did2item(mib_catlist,
				mibdid)) != NULL ) {
				item= (p80211itemd_t *)(item->data);
				item->did = mibdid;
				if ( mibmeta-> maxlen > 0 ) {
					item->len =
						p80211item_maxdatalen(
							mib_catlist,
							item->did);
				} else {
					item->len = 4;
				}
				*((UINT32 *)(item->data)) = 0UL;
				item->status =
					P80211ENUM_msgitem_status_data_ok;
			} else {
				item->status =
				P80211ENUM_msgitem_status_invalid_mib_did;
				*((UINT32 *)(item->data)) = 0UL;
				return;
			}
		} else {
			item->status =
				P80211ENUM_msgitem_status_invalid_mib_did;
			*((UINT32 *)(item->data)) = 0UL;
			return;
		}
	} else {
		item->did = did;
		item->len = 4;
		*((UINT32 *)(item->data)) = 0UL;
		item->status = P80211ENUM_msgitem_status_invalid_itemname;
	}

	return;
}


/*----------------------------------------------------------------