Harald Welte | 3dcdd20 | 2019-03-09 13:06:46 +0100 | [diff] [blame] | 1 | /* (C) 2018-2019 by Harald Welte <laforge@gnumonks.org> |
| 2 | * |
| 3 | * All Rights Reserved |
| 4 | * |
| 5 | * SPDX-License-Identifier: GPL-2.0+ |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License as published by |
| 9 | * the Free Software Foundation; either version 2 of the License, or |
| 10 | * (at your option) any later version. |
| 11 | * |
| 12 | * This program is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | * GNU General Public License for more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License along |
| 18 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 19 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
| 20 | * |
| 21 | */ |
| 22 | |
Harald Welte | 45c948c | 2018-09-23 19:26:52 +0200 | [diff] [blame] | 23 | |
| 24 | #include <osmocom/core/linuxlist.h> |
| 25 | #include <osmocom/core/talloc.h> |
| 26 | #include <osmocom/core/utils.h> |
| 27 | |
| 28 | #include <csv.h> |
| 29 | |
| 30 | #include "bankd.h" |
| 31 | |
| 32 | struct pcsc_slot_name { |
| 33 | struct llist_head list; |
| 34 | /* RSPRO bank slot number */ |
| 35 | struct bank_slot slot; |
| 36 | /* String name of the reader in PC/SC world */ |
| 37 | const char *name; |
| 38 | }; |
| 39 | |
| 40 | enum parser_state_name { |
| 41 | ST_NONE, |
| 42 | ST_BANK_NR, |
| 43 | ST_SLOT_NR, |
| 44 | ST_PCSC_NAME, |
| 45 | }; |
| 46 | struct parser_state { |
| 47 | struct bankd *bankd; |
| 48 | enum parser_state_name state; |
| 49 | struct pcsc_slot_name *cur; |
| 50 | }; |
| 51 | |
| 52 | |
| 53 | static void parser_state_init(struct parser_state *ps) |
| 54 | { |
| 55 | ps->state = ST_BANK_NR; |
| 56 | ps->cur = NULL; |
| 57 | } |
| 58 | |
| 59 | static void cb1(void *s, size_t len, void *data) |
| 60 | { |
| 61 | char *field = (char *) s; |
| 62 | struct parser_state *ps = data; |
| 63 | |
| 64 | switch (ps->state) { |
| 65 | case ST_BANK_NR: |
| 66 | OSMO_ASSERT(!ps->cur); |
| 67 | ps->cur = talloc_zero(ps->bankd, struct pcsc_slot_name); |
| 68 | OSMO_ASSERT(ps->cur); |
| 69 | ps->cur->slot.bank_id = atoi(field); |
| 70 | ps->state = ST_SLOT_NR; |
| 71 | break; |
| 72 | case ST_SLOT_NR: |
| 73 | OSMO_ASSERT(ps->cur); |
| 74 | ps->cur->slot.slot_nr = atoi(field); |
| 75 | ps->state = ST_PCSC_NAME; |
| 76 | break; |
| 77 | case ST_PCSC_NAME: |
| 78 | OSMO_ASSERT(ps->cur); |
| 79 | ps->cur->name = talloc_strdup(ps->cur, field); |
| 80 | break; |
| 81 | default: |
| 82 | OSMO_ASSERT(0); |
| 83 | } |
| 84 | } |
| 85 | |
| 86 | static void cb2(int c, void *data) |
| 87 | { |
| 88 | struct parser_state *ps = data; |
| 89 | struct pcsc_slot_name *sn = ps->cur; |
| 90 | |
| 91 | printf("PC/SC slot name: %u/%u -> '%s'\n", sn->slot.bank_id, sn->slot.slot_nr, sn->name); |
| 92 | llist_add_tail(&sn->list, &ps->bankd->pcsc_slot_names); |
| 93 | |
| 94 | ps->state = ST_BANK_NR; |
| 95 | ps->cur = NULL; |
| 96 | } |
| 97 | |
| 98 | int bankd_pcsc_read_slotnames(struct bankd *bankd, const char *csv_file) |
| 99 | { |
| 100 | FILE *fp; |
| 101 | struct csv_parser p; |
| 102 | char buf[1024]; |
| 103 | size_t bytes_read; |
| 104 | struct parser_state ps; |
| 105 | |
| 106 | if (csv_init(&p, CSV_APPEND_NULL) != 0) |
| 107 | return -1; |
| 108 | |
| 109 | fp = fopen(csv_file, "rb"); |
| 110 | if (!fp) |
| 111 | return -1; |
| 112 | |
| 113 | parser_state_init(&ps); |
| 114 | ps.bankd = bankd; |
| 115 | |
| 116 | while ((bytes_read = fread(buf, 1, sizeof(buf), fp)) > 0) { |
| 117 | if (csv_parse(&p, buf, bytes_read, cb1, cb2, &ps) != bytes_read) { |
| 118 | fprintf(stderr, "Error parsing CSV: %s\n", csv_strerror(csv_error(&p))); |
| 119 | fclose(fp); |
| 120 | return -1; |
| 121 | } |
| 122 | } |
| 123 | |
| 124 | csv_fini(&p, cb1, cb2, &ps); |
| 125 | fclose(fp); |
| 126 | csv_free(&p); |
| 127 | |
| 128 | return 0; |
| 129 | } |
| 130 | |
| 131 | const char *bankd_pcsc_get_slot_name(struct bankd *bankd, const struct bank_slot *slot) |
| 132 | { |
| 133 | struct pcsc_slot_name *cur; |
| 134 | |
| 135 | llist_for_each_entry(cur, &bankd->pcsc_slot_names, list) { |
| 136 | if (bank_slot_equals(&cur->slot, slot)) |
| 137 | return cur->name; |
| 138 | } |
| 139 | return NULL; |
| 140 | } |
Harald Welte | 297d72e | 2019-03-28 18:42:35 +0100 | [diff] [blame] | 141 | |
| 142 | |
| 143 | #include <wintypes.h> |
| 144 | #include <winscard.h> |
| 145 | #include <pcsclite.h> |
| 146 | |
| 147 | #define PCSC_ERROR(w, rv, text) \ |
| 148 | if (rv != SCARD_S_SUCCESS) { \ |
| 149 | LOGW((w), text ": %s (0x%lX)\n", pcsc_stringify_error(rv), rv); \ |
| 150 | goto end; \ |
| 151 | } else { \ |
| 152 | LOGW((w), ": OK\n"); \ |
| 153 | } |
| 154 | |
| 155 | static int pcsc_open_card(struct bankd_worker *worker) |
| 156 | { |
| 157 | long rc; |
| 158 | |
| 159 | if (!worker->reader.pcsc.hContext) { |
| 160 | LOGW(worker, "Attempting to open PC/SC context\n"); |
| 161 | /* The PC/SC context must be created inside the thread where we'll later use it */ |
| 162 | rc = SCardEstablishContext(SCARD_SCOPE_SYSTEM, NULL, NULL, &worker->reader.pcsc.hContext); |
| 163 | PCSC_ERROR(worker, rc, "SCardEstablishContext") |
| 164 | } |
| 165 | |
| 166 | if (!worker->reader.pcsc.hCard) { |
| 167 | LOGW(worker, "Attempting to open card/slot '%s'\n", worker->reader.name); |
| 168 | DWORD dwActiveProtocol; |
| 169 | rc = SCardConnect(worker->reader.pcsc.hContext, worker->reader.name, SCARD_SHARE_SHARED, |
| 170 | SCARD_PROTOCOL_T0, &worker->reader.pcsc.hCard, &dwActiveProtocol); |
| 171 | PCSC_ERROR(worker, rc, "SCardConnect") |
| 172 | } |
| 173 | |
| 174 | /* use DWORD type as this is what the PC/SC API expects */ |
| 175 | char pbReader[MAX_READERNAME]; |
| 176 | DWORD dwReaderLen = sizeof(pbReader); |
| 177 | DWORD dwAtrLen = worker->card.atr_len = sizeof(worker->card.atr); |
| 178 | DWORD dwState, dwProt; |
| 179 | rc = SCardStatus(worker->reader.pcsc.hCard, pbReader, &dwReaderLen, &dwState, &dwProt, |
| 180 | worker->card.atr, &dwAtrLen); |
| 181 | PCSC_ERROR(worker, rc, "SCardStatus") |
| 182 | worker->card.atr_len = dwAtrLen; |
| 183 | LOGW(worker, "Card ATR: %s\n", osmo_hexdump_nospc(worker->card.atr, worker->card.atr_len)); |
| 184 | end: |
| 185 | return rc; |
| 186 | } |
| 187 | |
| 188 | static int pcsc_transceive(struct bankd_worker *worker, const uint8_t *out, size_t out_len, |
| 189 | uint8_t *in, size_t *in_len) |
| 190 | { |
| 191 | const SCARD_IO_REQUEST *pioSendPci = SCARD_PCI_T0; |
| 192 | SCARD_IO_REQUEST pioRecvPci; |
| 193 | long rc; |
| 194 | |
| 195 | rc = SCardTransmit(worker->reader.pcsc.hCard, pioSendPci, out, out_len, &pioRecvPci, in, in_len); |
| 196 | PCSC_ERROR(worker, rc, "SCardTransmit"); |
| 197 | |
| 198 | end: |
| 199 | return rc; |
| 200 | } |
| 201 | |
| 202 | static void pcsc_cleanup(struct bankd_worker *worker) |
| 203 | { |
| 204 | if (worker->reader.pcsc.hCard) { |
| 205 | SCardDisconnect(worker->reader.pcsc.hCard, SCARD_UNPOWER_CARD); |
| 206 | worker->reader.pcsc.hCard = 0; |
| 207 | } |
| 208 | if (worker->reader.pcsc.hContext) { |
| 209 | SCardReleaseContext(worker->reader.pcsc.hContext); |
| 210 | worker->reader.pcsc.hContext = 0; |
| 211 | } |
| 212 | } |
| 213 | |
| 214 | const struct bankd_driver_ops pcsc_driver_ops = { |
| 215 | .open_card = pcsc_open_card, |
| 216 | .transceive = pcsc_transceive, |
| 217 | .cleanup = pcsc_cleanup, |
| 218 | }; |