SwiftPCAP

SwiftPCAP provides libpcap-based packet capture for Swift for both live and offline capture. You have the choice between handling a packet wrapped in a UnsafeBufferPointer or a safe version copied into a [UInt8].

Usage

var pcap = try SwiftPCAP.Live("en0")

// safe Swift array (copied)
var pkt: [UInt8] = p.nextPacket()

// direct usage of unsafe buffer allocated by libpcap
// note that the buffer is valid until the next call to nextPacketUnsafe, at which point
// libpcap will delete
var pkt: UnsafeBufferPointer<u_char> = p.nextPacketUnsafe()

Errors

SwiftPCAP throws errors based on libpcap errors.

libpcap throws two kinds of errors, one based on a char string, the other on int return codes. SwiftPCAP gathers all of these under SwiftPCAP.Errors.errorMessage(msg: String) using a humanized string from the comments of pcap.h.

License

This is free and unencumbered software released into the public domain.

Anyone is free to copy, modify, publish, use, compile, sell, or distribute this software, either in source code form or as a compiled binary, for any purpose, commercial or non-commercial, and by any means.

In jurisdictions that recognize copyright laws, the author or authors of this software dedicate any and all copyright interest in the software to the public domain. We make this dedication for the benefit of the public at large and to the detriment of our heirs and successors. We intend this dedication to be an overt act of relinquishment in perpetuity of all present and future rights to this software under copyright law.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.