common: Fix crash with libusb 1.0.25
Original patch by Ben Berg, but reworked to apply to master code
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@ -29,7 +29,7 @@
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#include <signal.h>
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#include <strings.h> /* For strncasecmp */
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#define BACKEND_VERSION "0.122"
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#define BACKEND_VERSION "0.123"
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#ifndef CORRTABLE_PATH
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#ifdef PACKAGE_DATA_DIR
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@ -775,7 +775,6 @@ static struct dyesub_backend *backends[] = {
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};
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static int find_and_enumerate(const char *argv0,
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struct libusb_context *ctx,
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struct libusb_device ***list,
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const struct dyesub_backend *backend,
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const char *match_serno,
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@ -799,7 +798,7 @@ static int find_and_enumerate(const char *argv0,
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STATE("+org.gutenprint.searching-for-device\n");
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/* Enumerate and find suitable device */
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num = libusb_get_device_list(ctx, list);
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num = libusb_get_device_list(NULL, list);
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/* See if we can actually match on the supplied make! */
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if (backend && make) {
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@ -1032,7 +1031,6 @@ along with this program; if not, see <https://www.gnu.org/licenses/>.\n\n";
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void print_help(const char *argv0, const struct dyesub_backend *backend)
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{
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struct libusb_context *ctx = NULL;
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struct libusb_device **list = NULL;
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const char *ptr = getenv("BACKEND");
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@ -1092,7 +1090,7 @@ void print_help(const char *argv0, const struct dyesub_backend *backend)
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}
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/* Scan for all printers for the specified backend */
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find_and_enumerate(argv0, ctx, &list, backend, NULL, ptr, 1, 1, NULL);
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find_and_enumerate(argv0, &list, backend, NULL, ptr, 1, 1, NULL);
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libusb_free_device_list(list, 1);
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}
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@ -1276,7 +1274,6 @@ done:
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int main (int argc, char **argv)
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{
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struct libusb_context *ctx = NULL;
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struct libusb_device **list = NULL;
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struct dyesub_backend *backend = NULL;
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@ -1444,7 +1441,7 @@ int main (int argc, char **argv)
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#endif
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/* Libusb setup */
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ret = libusb_init(&ctx);
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ret = libusb_init(NULL);
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if (ret) {
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ERROR("Failed to initialize libusb (%d)\n", ret);
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ret = CUPS_BACKEND_RETRY_CURRENT;
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@ -1470,7 +1467,7 @@ int main (int argc, char **argv)
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/* Enumerate devices */
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STATE("+connecting-to-device\n");
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found = find_and_enumerate(argv0, ctx, &list, backend, use_serno, backend_str, 0, NUM_CLAIM_ATTEMPTS, &conn);
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found = find_and_enumerate(argv0, &list, backend, use_serno, backend_str, 0, NUM_CLAIM_ATTEMPTS, &conn);
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if (found == -1) {
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ERROR("Printer open failure (No matching printers found!)\n");
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@ -1617,7 +1614,7 @@ done:
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if (list)
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libusb_free_device_list(list, 1);
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libusb_exit(ctx);
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libusb_exit(NULL);
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return ret;
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}
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