a Þˆ¨atã@spdZddlmZddlmZmZddlmZm Z m Z m Z ddl m Z dd„Zd d „Zd d „Zd d„Zgd¢ZdS)z miscellaneous zmq_utils wrappingé)ÚEINTRé)ÚffiÚlib)ÚZMQErrorÚInterruptedSystemCallÚ _check_rcÚ_check_version)ÚunicodecCs,tddƒt|tƒr| d¡}tt |¡ƒS)zxCheck for zmq capability by name (e.g. 'ipc', 'curve') .. versionadded:: libzmq-4.1 .. versionadded:: 14.1 )érzzmq.hasÚutf8)r Ú isinstancer ÚencodeÚboolÚCZzmq_has)Z capability©rú5lib/python3.9/site-packages/zmq/backend/cffi/utils.pyÚhass   rcCsVtddƒt d¡}t d¡}t ||¡}t|ƒt |¡dd…t |¡dd…fS)u generate a Z85 keypair for use with zmq.CURVE security Requires libzmq (≥ 4.0) to have been built with CURVE support. Returns ------- (public, secret) : two bytestrings The public and private keypair as 40 byte z85-encoded bytestrings. )ééÚ curve_keypairúchar[64]Né()r rÚnewrZzmq_curve_keypairrÚbuffer)ÚpublicÚprivateÚrcrrrrs    rcCsNt|tƒr| d¡}tddƒt d¡}t ||¡}t|ƒt  |¡dd…S)unCompute the public key corresponding to a private key for use with zmq.CURVE security Requires libzmq (≥ 4.2) to have been built with CURVE support. Parameters ---------- private The private key as a 40 byte z85-encoded bytestring Returns ------- bytestring The public key as a 40 byte z85-encoded bytestring. r )r rÚ curve_publicrNr) r r rr rrrZzmq_curve_publicrr)rrrrrrr-s     rcOs4||Ž}z t|ƒWq0ty*YqYq0q0qdS)z/make a call, retrying if interrupted with EINTRN)rr)ÚfÚargsÚkwargsrrrrÚ_retry_sys_callEs    r")rrrN)Ú__doc__ÚerrnorZ_cffirrrZ zmq.errorrrrr Zzmq.utils.strtypesr rrrr"Ú__all__rrrrÚs