diff options
| -rw-r--r-- | bin/msr606.c | 222 |
1 files changed, 120 insertions, 102 deletions
diff --git a/bin/msr606.c b/bin/msr606.c index 1f2acbf4..aa6ee5c6 100644 --- a/bin/msr606.c +++ b/bin/msr606.c @@ -23,165 +23,171 @@ #include <termios.h> #include <unistd.h> -static int tty = -1; - -static void ttyWrite(const uint8_t *ptr, size_t size) { - ssize_t ret = write(tty, ptr, size); - if (ret < 0) err(EX_IOERR, "write"); +static void writeAll(int fd, const uint8_t *ptr, size_t size) { + while (size) { + ssize_t ret = write(fd, ptr, size); + if (ret < 0) err(EX_IOERR, "write"); + ptr += ret; + size -= ret; + } } -static void ttyRead(uint8_t *ptr, size_t size) { +static void readAll(int fd, uint8_t *ptr, size_t size) { while (size) { - ssize_t ret = read(tty, ptr, size); + ssize_t ret = read(fd, ptr, size); if (ret < 0) err(EX_IOERR, "read"); + if (!ret) errx(EX_DATAERR, "unexpected eof"); ptr += ret; size -= ret; } } -static void reset(void) { - uint8_t buf[] = { 0x1B, 'a' }; - ttyWrite(buf, 2); +static void req2(int fd, uint8_t c) { + uint8_t buf[] = { 0x1B, c }; + writeAll(fd, buf, 2); +} +static uint8_t res2(int fd) { + uint8_t buf[2]; + readAll(fd, buf, 2); + if (buf[0] != 0x1B) errx(EX_PROTOCOL, "response fail %hhX", buf[0]); + return buf[1]; } -static void test(void) { - uint8_t buf[3] = { 0x1B, 'e' }; - ttyWrite(buf, 2); - ttyRead(buf, 2); - if (buf[1] != 'y') errx(EX_PROTOCOL, "test fail %hhX", buf[1]); +static void req3(int fd, uint8_t c, uint8_t d) { + uint8_t buf[] = { 0x1B, c, d }; + writeAll(fd, buf, 3); +} +static struct Res3 { uint8_t c, d; } res3(int fd) { + uint8_t buf[3]; + readAll(fd, buf, 3); + if (buf[0] != 0x1B) errx(EX_PROTOCOL, "response fail %hhX", buf[0]); + return (struct Res3) { buf[1], buf[2] }; +} - buf[1] = 0x87; - ttyWrite(buf, 2); - ttyRead(buf, 2); - if (buf[1] != '0') errx(EX_PROTOCOL, "ram fail %hhX", buf[1]); +static void reset(int tty) { + req2(tty, 'a'); +} + +static void test(int tty) { + uint8_t res; + + req2(tty, 'e'); + res = res2(tty); + if (res != 'y') errx(EX_PROTOCOL, "test fail %hhX", res); + + req2(tty, 0x87); + res = res2(tty); + if (res != '0') errx(EX_PROTOCOL, "ram fail %hhX", res); - buf[1] = 't'; - ttyWrite(buf, 2); - ttyRead(buf, 3); - printf("model: %c%c\n", buf[1], buf[2]); + req2(tty, 't'); + struct Res3 model = res3(tty); + printf("model: %c%c\n", model.c, model.d); - buf[1] = 'v'; - ttyWrite(buf, 2); - ttyRead(buf, 2); - printf("firmware: %hhu\n", buf[1]); + req2(tty, 'v'); + res = res2(tty); + printf("firmware: %hhu\n", res); } -static void sensorTest(void) { - uint8_t buf[] = { 0x1B, 0x86 }; - ttyWrite(buf, 2); - ttyRead(buf, 2); - if (buf[1] != '0') errx(EX_PROTOCOL, "sensor fail %hhX", buf[1]); +static void sensorTest(int tty) { + req2(tty, 0x86); + uint8_t res = res2(tty); + if (res != '0') errx(EX_PROTOCOL, "sensor fail %hhX", res); } -static char led; -static void setLed(void) { - uint8_t buf[2] = { 0x1B }; - switch (led) { - break; case 'a': buf[1] = 0x82; - break; case 'g': buf[1] = 0x83; - break; case 'y': buf[1] = 0x84; - break; case 'r': buf[1] = 0x85; - break; default: buf[1] = 0x81; +static void led(int tty, char c) { + switch (c) { + break; case 'a': req2(tty, 0x82); + break; case 'g': req2(tty, 0x83); + break; case 'y': req2(tty, 0x84); + break; case 'r': req2(tty, 0x85); + break; default: req2(tty, 0x81); } - ttyWrite(buf, 2); } -static void status(void) { - uint8_t buf[2]; - ttyRead(buf, 2); - switch (buf[1]) { +static void status(int tty) { + uint8_t res = res2(tty); + switch (res) { break; case '0': return; break; case '1': errx(EX_DATAERR, "read/write error"); break; case '2': errx(EX_DATAERR, "command format error"); break; case '4': errx(EX_DATAERR, "invalid command"); break; case '9': errx(EX_DATAERR, "invalid card swipe"); - break; default: errx(EX_PROTOCOL, "status fail %hhX", buf[1]); + break; default: errx(EX_PROTOCOL, "status fail %hhX", res); } } -static void readCard(void) { - uint8_t buf[] = { 0x1B, 'r' }; - ttyWrite(buf, 2); - ttyRead(buf, 2); - if (buf[1] != 's') errx(EX_PROTOCOL, "read fail %hhX", buf[1]); +static void readCard(int tty) { + req2(tty, 'r'); + uint8_t res = res2(tty); + if (res != 's') errx(EX_PROTOCOL, "read fail %hhX", res); for (;;) { - ttyRead(buf, 1); - if (buf[0] == '?') { - ttyRead(buf, 1); - if (buf[0] == 0x1C) break; + readAll(tty, &res, 1); + if (res == '?') { + readAll(tty, &res, 1); + if (res == 0x1C) break; printf("?"); } else { - printf("%c", buf[0]); + printf("%c", res); } } - status(); + status(tty); } -static void writeCard(void) { - uint8_t buf[] = { 0x1B, 'w', 0x1B, 's' }; - ttyWrite(buf, 4); +static void writeCard(int tty) { + req2(tty, 'w'); + req2(tty, 's'); + uint8_t buf[2]; ssize_t size; - while (0 < (size = read(STDIN_FILENO, buf, 1))) { - ttyWrite(buf, 1); + while (0 < (size = read(STDIN_FILENO, buf, 2))) { + writeAll(tty, buf, 2); } if (size < 0) err(EX_IOERR, "(stdin)"); buf[0] = '?'; buf[1] = 0x1C; - ttyWrite(buf, 2); - status(); + writeAll(tty, buf, 2); + status(tty); } -static char erase; -static void eraseCard(void) { - uint8_t buf[] = { 0x1B, 'c', erase - '0' }; - ttyWrite(buf, 3); - ttyRead(buf, 2); - if (buf[1] != '0') errx(EX_DATAERR, "erase fail %hhX", buf[1]); +static void eraseCard(int tty, char c) { + req3(tty, 'c', c - '0'); + uint8_t res = res2(tty); + if (res != '0') errx(EX_PROTOCOL, "erase fail %hhX", res); } -static void setHiCo(void) { - uint8_t buf[] = { 0x1B, 'x' }; - ttyWrite(buf, 2); - ttyRead(buf, 2); - if (buf[1] != '0') errx(EX_PROTOCOL, "hi-co fail %hhX", buf[1]); +static void setHiCo(int tty) { + req2(tty, 'x'); + uint8_t res = res2(tty); + if (res != '0') errx(EX_PROTOCOL, "hi-co fail %hhX", res); } -static void setLoCo(void) { - uint8_t buf[] = { 0x1B, 'y' }; - ttyWrite(buf, 2); - ttyRead(buf, 2); - if (buf[1] != '0') errx(EX_PROTOCOL, "lo-co fail %hhX", buf[1]); +static void setLoCo(int tty) { + req2(tty, 'y'); + uint8_t res = res2(tty); + if (res != '0') errx(EX_PROTOCOL, "lo-co fail %hhX", res); } -static void getCo(void) { - uint8_t buf[] = { 0x1B, 'd' }; - ttyWrite(buf, 2); - ttyRead(buf, 2); - if (buf[1] == 'h') printf("hi-co\n"); - else if (buf[1] == 'l') printf("lo-co\n"); - else errx(EX_PROTOCOL, "get co fail %hhX", buf[1]); +static void getCo(int tty) { + req2(tty, 'd'); + uint8_t res = res2(tty); + switch (res) { + break; case 'h': printf("hi-co\n"); + break; case 'l': printf("lo-co\n"); + break; default: errx(EX_PROTOCOL, "get co fail %hhX", res); + } } int main(int argc, char *argv[]) { const char *file = "/dev/ttyUSB0"; - void (*func)(void) = test; + char func = 't'; + const char *arg = NULL; int opt; while (0 < (opt = getopt(argc, argv, "L:RTce:f:hlrtw"))) { switch (opt) { - break; case 'L': led = optarg[0]; func = setLed; - break; case 'R': func = reset; - break; case 'T': func = sensorTest; - break; case 'c': func = getCo; - break; case 'e': erase = optarg[0]; func = eraseCard; break; case 'f': file = optarg; - break; case 'h': func = setHiCo; - break; case 'l': func = setLoCo; - break; case 'r': func = readCard; - break; case 't': func = test; - break; case 'w': func = writeCard; - break; default: return EX_USAGE; + break; case '?': return EX_USAGE; + break; default: func = opt; arg = optarg; } } - tty = open(file, O_RDWR); + int tty = open(file, O_RDWR); if (tty < 0) err(EX_NOINPUT, "%s", file); struct termios attr; @@ -192,5 +198,17 @@ int main(int argc, char *argv[]) { error = tcsetattr(tty, TCSANOW, &attr); if (error) err(EX_IOERR, "tcsetattr"); - func(); + switch (func) { + break; case 'L': led(tty, arg[0]); + break; case 'R': reset(tty); + break; case 'T': sensorTest(tty); + break; case 'c': getCo(tty); + break; case 'e': eraseCard(tty, arg[0]); + break; case 'h': setHiCo(tty); + break; case 'l': setLoCo(tty); + break; case 'r': readCard(tty); + break; case 't': test(tty); + break; case 'w': writeCard(tty); + break; default: return EX_USAGE; + } } |