54 lines
2.4 KiB
C
54 lines
2.4 KiB
C
/*
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* Copyright (C) 1999, Michael Jennings
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to
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* deal in the Software without restriction, including without limitation the
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* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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* sell copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies of the Software, its documentation and marketing & publicity
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* materials, and acknowledgment shall be given in the documentation, materials
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* and software packages that this Software was used.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#ifndef EPPLET_NET_H
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#define EPPLET_NET_H
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#include <errno.h>
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#define BEGMATCH(a, b) (!strncasecmp((a), (b), (sizeof(b) - 1)))
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#define NONULL(x) ((x) ? (x) : (""))
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/* Returns an array containing the names of all valid network devices on the system */
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extern char **net_get_devices(void);
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/* Stores the number of bytes received and transmitted by device into
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the supplied pointers. Returns 0 on success, a valid errno value on
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failure. You can pass NULL for either pointer to not get that value.
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Passing NULL for both pointers will verify that the device exists. */
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extern unsigned char net_get_bytes_inout(const char *device, double *in_bytes, double *out_bytes);
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/* Just retrieves the number of bytes received by the device. */
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extern double net_get_bytes_in(const char *device);
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/* Just retrieves the number of bytes transmitted by the device. */
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extern double net_get_bytes_out(const char *device);
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/* Returns a string that describes the error encountered. */
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extern const char *net_strerror(unsigned char err_code);
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/* Checks to see if the device actually exists. */
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#define net_check_device(dev) (net_get_bytes_inout(device, (double *) NULL, (double *) NULL));
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#endif /* EPPLET_NET_H */
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