FreeCalypso > hg > fc-sim-tools
view pcsc/context.c @ 47:b0cf75d0bb2d
doc/Serial-SIM-readers article written
author | Mychaela Falconia <falcon@freecalypso.org> |
---|---|
date | Sun, 21 Mar 2021 04:32:18 +0000 |
parents | f4479a0d4cea |
children |
line wrap: on
line source
#include <stdio.h> #include <stdlib.h> #include <pcsclite.h> #include <winscard.h> SCARDCONTEXT hContext; char *reader_list; setup_pcsc_context() { LONG rv; rv = SCardEstablishContext(SCARD_SCOPE_SYSTEM, NULL, NULL, &hContext); if (rv != SCARD_S_SUCCESS) { fprintf(stderr, "SCardEstablishContext: %s\n", pcsc_stringify_error(rv)); exit(1); } return(0); } get_reader_list() { LONG rv; DWORD dwReaders; rv = SCardListReaders(hContext, NULL, NULL, &dwReaders); if (rv != SCARD_S_SUCCESS) { fprintf(stderr, "SCardListReaders 1st call: %s\n", pcsc_stringify_error(rv)); SCardReleaseContext(hContext); exit(1); } if (dwReaders < 1) { fprintf(stderr, "error: dwReaders returned by SCardListReaders() is less than 1\n"); SCardReleaseContext(hContext); exit(1); } reader_list = malloc(dwReaders); if (!reader_list) { perror("malloc for readers list"); SCardReleaseContext(hContext); exit(1); } reader_list[0] = '\0'; rv = SCardListReaders(hContext, NULL, reader_list, &dwReaders); if (rv != SCARD_S_SUCCESS) { fprintf(stderr, "SCardListReaders 2nd call: %s\n", pcsc_stringify_error(rv)); SCardReleaseContext(hContext); exit(1); } return(0); }