feat: read support file i/o and reading from stdin
This commit is contained in:
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29d2890c26
commit
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GPG key ID:
0AA29A52FB33CFB5
2 changed files with 281 additions and 108 deletions
5
Makefile
5
Makefile
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@ -1,8 +1,11 @@
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.PHONY: honeywell-config clean
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.PHONY: honeywell-config debug clean
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honeywell-config:
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gcc -Wall -Werror -o honeywell-config honeywell-config.c -lusb-1.0
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debug:
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gcc -Wall -Werror -O0 -ggdb3 -o honeywell-config honeywell-config.c -lusb-1.0
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clean:
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rm -f honeywell-config
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@ -1,7 +1,10 @@
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#include <ctype.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <libusb-1.0/libusb.h>
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@ -10,9 +13,19 @@ uint16_t product_id = 0;
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uint8_t reset = 0;
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uint8_t oneline = 0;
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uint8_t debug = 0;
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int infd = 0;
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int outfd = 1;
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uint8_t explicit_in = 0;
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libusb_device_handle *devh = NULL;
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uint8_t endpoint = 0;
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#define USBERR(msg, rc) { dprintf(2, "%s: %s\n", msg, libusb_strerror(rc)); }
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#define DEBUG(...) { if (debug) { dprintf(2, __VA_ARGS__); } }
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#define DEBUG(...) { if (debug >= 1) { dprintf(2, __VA_ARGS__); } }
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#define DEBUG2(...) { if (debug >= 2) { dprintf(2, __VA_ARGS__); } }
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#define DEBUG3(...) { if (debug >= 3) { dprintf(2, __VA_ARGS__); } }
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#define HEXBUF(msg, buf, n) { if (debug >= 3) { dprintf(2, "%s:", msg); for (uint8_t *__h = buf; __h < buf+n;++__h) { dprintf(2, " %02x", *__h); } dprintf(2, "\n"); } }
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uint32_t vidpid[] = {
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0x0c2e0b01,
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@ -21,23 +34,186 @@ uint32_t vidpid[] = {
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};
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int config(int argc, char **args) {
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struct tokenizer {
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char tokbuf[1024];
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char *tok;
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uint8_t eot;
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int (*cb)(const char *tok, uint8_t last);
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};
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void tok_init(struct tokenizer *t, int (*cb)(const char *tok, uint8_t last)) {
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memset(t->tokbuf, 0, 1024);
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t->tok = t->tokbuf;
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t->eot = 0;
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t->cb = cb;
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}
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int tok_read(struct tokenizer *t, char *buf, size_t n) {
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char *start = buf;
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char *end = start;
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while (!t->eot) {
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// non-final tokens: terminated by ;
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end = strchr(start, ';');
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if (end) {
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if (end > start) {
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for (char *c = start; c < end; ++c) {
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if (isprint(*c)) {
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*(t->tok++) = *c;
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}
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}
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}
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*(t->tok) = 0;
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if (t->cb(t->tokbuf, 0)) {
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return 1;
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}
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t->tok = t->tokbuf;
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*(t->tok) = 0;
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start = end + 1;
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continue;
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}
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// last token: terminated by .
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end = strchr(start, '.');
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if (end) {
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t->eot = 1;
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if (end > start) {
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for (char *c = start; c < end; ++c) {
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if (isprint(*c)) {
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*(t->tok++) = *c;
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}
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}
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}
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*(t->tok) = 0;
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if (t->cb(t->tokbuf, 1)) {
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return 1;
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}
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t->tok = t->tokbuf;
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*(t->tok) = 0;
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break;
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}
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// incomplete tokens continued in the next message
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end = strchr(start, '?');
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if (end) {
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*end = 0;
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}
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for (char *c = start; *c != 0; ++c) {
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if (isprint(*c)) {
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*(t->tok++) = *c;
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}
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}
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*(t->tok) = 0;
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break;
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}
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return 0;
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}
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struct tokenizer in_tok;
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struct tokenizer out_tok;
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int print_token(const char *tok, uint8_t last) {
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int rc;
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if (oneline && !last) {
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rc = dprintf(outfd, "%s;", tok);
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} else {
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rc = dprintf(outfd, "%s.\n", tok);
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}
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return rc < 0;
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}
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int send_token(const char *tok, uint8_t last) {
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uint8_t cmd[64] = { 0 };
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char tokbuf[1024] = { 0 };
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uint8_t *cmdptr = cmd + 5;
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int rc;
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memset(cmdptr, 0, 59);
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for (uint8_t i = 0; i < strlen(tok); ++i) {
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if (isprint(tok[i])) {
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*(cmdptr++) = tok[i];
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}
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}
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*cmdptr = '.';
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cmd[0] = 0xfd;
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cmd[1] = cmdptr - cmd - 1;
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cmd[2] = 0x16;
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cmd[3] = 0x4d;
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cmd[4] = 0x0d;
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HEXBUF(">", cmd, 64);
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rc = libusb_control_transfer(devh, 0x21, 0x09, 0x02fd, 1, cmd, 64, 0);
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if (rc < 0) {
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USBERR("failed to send control message", rc);
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return 1;
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} else {
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DEBUG2("> %s\n", cmd+5);
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}
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int tx;
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tok_init(&out_tok, print_token);
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// Repeat until a "." (EOT) is encountered in the response.
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while (!out_tok.eot) {
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rc = libusb_interrupt_transfer(devh, endpoint, cmd, 64, &tx, 1000);
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if (rc) {
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USBERR("failed to receive response from device", rc);
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return 1;
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}
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HEXBUF("<", cmd, tx);
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// skip first 5 bytes (report id, length, 3*AIMID)
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DEBUG2("< %s\n", cmd+5);
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if (tok_read(&out_tok, (char *) cmd+5, tx-5)) {
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return 1;
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}
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}
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return 0;
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}
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int config(int argc, char **args) {
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// If commands are provided on the CLI, execute only those
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if (argc > 0) {
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for (int i = 0; i < argc; ++i) {
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if (send_token(args[i], i >= argc-1)) {
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return 1;
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}
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}
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return 0;
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}
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// If input is a tty, dump config
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// Can be overwritten with "-i -" on the cli
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if (isatty(infd) && !explicit_in) {
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return send_token("?", 1);
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}
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// Otherwhise parse tokens from stdin
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char buf[65];
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ssize_t n = 1;
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tok_init(&in_tok, send_token);
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while (n) {
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n = read(infd, buf, 64);
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if (n < 0) {
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perror("failed to read from input file");
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return 1;
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}
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buf[n] = 0;
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if (tok_read(&in_tok, buf, n)) {
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return 1;
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}
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}
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return 0;
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}
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int usb(int argc, char **args) {
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libusb_context *ctx = NULL;
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libusb_device *dev = NULL;
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libusb_device_handle *devh = NULL;
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struct libusb_device_descriptor devd = { 0 };
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struct libusb_config_descriptor *devc = NULL;
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const struct libusb_interface *devi = NULL;
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const struct libusb_interface_descriptor *devid = NULL;
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const struct libusb_endpoint_descriptor *deved = NULL;
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char devdesc[256] = { 0 };
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int rc = 0;
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int rc = 0, fail = 0;
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uint8_t ints[32] = { 0 };
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uint8_t inti = 0;
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uint8_t endpoint = 0;
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//
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// Find and open the device
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@ -45,14 +221,16 @@ int config(int argc, char **args) {
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rc = libusb_init(&ctx);
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if (!ctx) {
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USBERR("failed to initialize libusb", rc);
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return 1;
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fail = 1;
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goto fail;
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}
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if (vendor_id || product_id) {
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devh = libusb_open_device_with_vid_pid(ctx, vendor_id, product_id);
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if (!devh) {
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dprintf(2, "device %04x:%04x not found\n", vendor_id, product_id);
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return 1;
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fail = 1;
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goto fail;
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}
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} else {
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devh = NULL;
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@ -61,7 +239,8 @@ int config(int argc, char **args) {
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}
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if (!devh) {
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dprintf(2, "default devices not found, please provide vendor and product id\n");
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return 1;
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fail = 1;
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goto fail;
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}
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}
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@ -70,8 +249,34 @@ int config(int argc, char **args) {
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rc = libusb_get_device_descriptor(dev, &devd);
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if (rc) {
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USBERR("failed to get device descriptor", rc);
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return 1;
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fail = 1;
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goto fail;
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}
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// Print device info
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rc = libusb_get_string_descriptor_ascii(devh, devd.iManufacturer, (uint8_t *) devdesc, 256);
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if (rc < 0) {
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USBERR("failed to get manufacturer string descriptor", rc);
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fail = 1;
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goto fail;
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}
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DEBUG("Manufacturer: %s\n", devdesc);
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rc = libusb_get_string_descriptor_ascii(devh, devd.iProduct, (uint8_t *) devdesc, 256);
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if (rc < 0) {
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USBERR("failed to get product string descriptor", rc);
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fail = 1;
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goto fail;
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}
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DEBUG("Product: %s\n", devdesc);
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rc = libusb_get_string_descriptor_ascii(devh, devd.iSerialNumber, (uint8_t *) devdesc, 256);
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if (rc < 0) {
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USBERR("failed to get serial number string descriptor", rc);
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fail = 1;
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goto fail;
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}
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DEBUG("Serial Number: %s\n", devdesc);
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// Iterate all configurations, interfaces and endpoints to find the REM/EZConfig endpoint
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for (uint8_t c = 0; c < devd.bNumConfigurations; ++c) {
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libusb_free_config_descriptor(devc);
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rc = libusb_get_config_descriptor(dev, c, &devc);
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@ -84,9 +289,9 @@ int config(int argc, char **args) {
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USBERR("failed to get config string descriptor", rc);
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continue;
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}
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DEBUG("- configuration %d: %s\n", c, devdesc);
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DEBUG2("- configuration %d: %s\n", c, devdesc);
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for (uint8_t i = 0; i < devc->bNumInterfaces; ++i) {
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DEBUG(" - interface %d\n", i);
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DEBUG2(" - interface %d\n", i);
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devi = &(devc->interface[i]);
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for (uint8_t a = 0; a < devi->num_altsetting; ++a) {
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devid = &(devi->altsetting[a]);
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@ -95,13 +300,13 @@ int config(int argc, char **args) {
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USBERR("failed to get interface string descriptor", rc);
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continue;
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}
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DEBUG(" - altsetting %d: interface=%d, desc=%s class=%d subclass=%d protocol=%d\n",
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devid->bAlternateSetting, devid->bInterfaceNumber, devdesc,
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devid->bInterfaceClass, devid->bInterfaceSubClass, devid->bInterfaceProtocol);
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DEBUG2(" - altsetting %d: interface=%d, desc=%s class=%d subclass=%d protocol=%d\n",
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devid->bAlternateSetting, devid->bInterfaceNumber, devdesc,
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devid->bInterfaceClass, devid->bInterfaceSubClass, devid->bInterfaceProtocol);
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for (uint8_t e = 0; e < devid->bNumEndpoints; ++e) {
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deved = &(devid->endpoint[e]);
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char type = "csbi"[deved->bmAttributes & 0b00000011];
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DEBUG(" - endpoint %x: t=%c\n", deved->bEndpointAddress, type);
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DEBUG2(" - endpoint %x: t=%c\n", deved->bEndpointAddress, type);
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// build a list of interfaces so that we can claim all of them
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ints[inti++] = devid->bInterfaceNumber;
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// endpoint selection:
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@ -116,7 +321,7 @@ int config(int argc, char **args) {
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}
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}
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DEBUG("chose endpoint %x\n", endpoint);
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DEBUG2("chose endpoint %x\n", endpoint);
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//
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// Disconnect usbhid driver from both device interfaces
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@ -128,13 +333,15 @@ int config(int argc, char **args) {
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rc = libusb_kernel_driver_active(devh, ints[i]);
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if (rc < 0) {
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USBERR("failed to query kernel driver state", rc);
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return 1;
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fail = 1;
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goto fail;
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}
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if (rc > 0) {
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rc = libusb_detach_kernel_driver(devh, ints[i]);
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if (rc) {
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USBERR("failed to detach kernel driver", rc);
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return 1;
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fail = 1;
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goto fail;
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}
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}
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}
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@ -144,102 +351,40 @@ int config(int argc, char **args) {
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rc = libusb_claim_interface(devh, ints[i]);
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if (rc) {
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USBERR("failed to claim interface", rc);
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return 1;
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fail = 1;
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goto fail;
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}
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}
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//
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// Prepare and send a message on the control channel for each config argument
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//
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for (int i = 0; i < argc; ++i) {
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memset(cmd+5, 0, 59);
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cmd[0] = 0xfd;
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cmd[1] = strlen(args[i])+3;
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cmd[2] = 0x16;
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cmd[3] = 0x4d;
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cmd[4] = 0x0d;
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memcpy(cmd+5, args[i], strlen(args[i]));
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rc = libusb_control_transfer(devh, 0x21, 0x09, 0x02fd, 1, cmd, 64, 0);
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if (rc < 0) {
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USBERR("failed to send control message", rc);
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} else {
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DEBUG("> %s\n", args[i]);
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}
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int tx;
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tokbuf[64] = 0;
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char *start, *end, *tok = tokbuf;
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uint8_t eot = 0;
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// Repeat until a "." (EOT) is encountered in the response.
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while (!eot) {
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rc = libusb_interrupt_transfer(devh, endpoint, cmd, 64, &tx, 1000);
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if (rc) {
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USBERR("failed to receive response from device", rc);
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break;
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}
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// strip 2-byte header and AIMID
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start = (char *) cmd+5;
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DEBUG("< %s\n", start);
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while (1) {
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// non-final tokens: terminated by ;
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end = strchr(start, ';');
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if (end) {
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if (end > start) {
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memcpy(tok, start, end-start-1);
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tok += end-start-1;
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}
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*tok = 0;
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if (oneline) {
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printf("%s;", tokbuf);
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} else {
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printf("%s.\n", tokbuf);
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}
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tok = tokbuf;
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*tok = 0;
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start = end + 1;
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continue;
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}
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// last token: terminated by .
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end = strchr(start, '.');
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if (end) {
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eot = 1;
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if (end > start) {
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memcpy(tok, start, end-start-1);
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tok += end-start-1;
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}
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*tok = 0;
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printf("%s.\n", tokbuf);
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tok = tokbuf;
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*tok = 0;
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break;
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}
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// incomplete tokens continued in the next message
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end = strchr(start, '?');
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if (end) {
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*end = 0;
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}
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strcpy(tok, start);
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tok += strlen(start);
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break;
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}
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}
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rc = config(argc, args);
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if (rc) {
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fail = 1;
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goto fail;
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}
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//
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// Cleanup
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//
|
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for (uint8_t i = 0; i < inti; ++i) {
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rc = libusb_release_interface(devh, ints[i]);
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if (rc) {
|
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USBERR("failed to release interface", rc);
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return 1;
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fail:
|
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if (devh) {
|
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for (uint8_t i = 0; i < inti; ++i) {
|
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rc = libusb_release_interface(devh, ints[i]);
|
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if (rc) {
|
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USBERR("failed to release interface", rc);
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}
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}
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if (reset) {
|
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libusb_reset_device(devh);
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}
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libusb_close(devh);
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}
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||||
if (reset) {
|
||||
libusb_reset_device(devh);
|
||||
if (ctx) {
|
||||
libusb_exit(ctx);
|
||||
}
|
||||
libusb_close(devh);
|
||||
libusb_exit(ctx);
|
||||
return 0;
|
||||
return fail;
|
||||
}
|
||||
|
||||
|
||||
|
|
@ -247,7 +392,7 @@ int main(int argc, char **argv) {
|
|||
int opt;
|
||||
char *end;
|
||||
long parsed;
|
||||
while ((opt = getopt(argc, argv, "v:p:ord")) != -1) {
|
||||
while ((opt = getopt(argc, argv, "v:p:1rdi:o:")) != -1) {
|
||||
switch (opt) {
|
||||
case 'v':
|
||||
end = optarg;
|
||||
|
|
@ -278,21 +423,46 @@ int main(int argc, char **argv) {
|
|||
case 'r':
|
||||
reset = 1;
|
||||
break;
|
||||
case 'o':
|
||||
case '1':
|
||||
oneline = 1;
|
||||
break;
|
||||
case 'd':
|
||||
debug = 1;
|
||||
++debug;
|
||||
break;
|
||||
case 'i':
|
||||
explicit_in = 1;
|
||||
if (!strcmp("-", optarg)) {
|
||||
infd = 0;
|
||||
} else {
|
||||
infd = open(optarg, O_CLOEXEC|O_RDONLY);
|
||||
if (infd < 0) {
|
||||
perror("failed to open input file");
|
||||
exit(1);
|
||||
}
|
||||
}
|
||||
break;
|
||||
case 'o':
|
||||
if (!strcmp("-", optarg)) {
|
||||
outfd = 1;
|
||||
} else {
|
||||
outfd = open(optarg, O_CLOEXEC|O_CREAT|O_WRONLY, S_IRUSR|S_IWUSR|S_IRGRP|S_IROTH);
|
||||
if (outfd < 0) {
|
||||
perror("failed to open output file");
|
||||
exit(1);
|
||||
}
|
||||
}
|
||||
break;
|
||||
default:
|
||||
printf("usage: %s [-v vendor] [-p product] [-o] [-r] [-d] command1 [command2 [... commandN]]\n", argv[0]);
|
||||
printf("usage: %s [-v vendor] [-p product] [-1] [-r] [-d] [-i infile] [-o outfile] [command1 [... commandN]]\n", argv[0]);
|
||||
puts(" -v vendor\tUSB vendor ID of the barcode scanner");
|
||||
puts(" -p product\tUSB product ID of the barcode scanner");
|
||||
puts(" -o\t\tPrint response on one line, rather than one token per line");
|
||||
puts(" -1\t\tPrint response on one line, rather than one token per line");
|
||||
puts(" -r\t\tReset device after configuration");
|
||||
puts(" -d\t\tDebug mode (more verbose output)");
|
||||
puts(" -i infile\tRead input from infile instead of stdin");
|
||||
puts(" -o outfile\tWrite output to outfile instead of stdout");
|
||||
return 1;
|
||||
}
|
||||
}
|
||||
return config(argc-optind, argv+optind);
|
||||
return usb(argc-optind, argv+optind);
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in a new issue