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| author | Pali Rohár <pali.rohar@gmail.com> | 2012-09-22 10:20:49 +0200 |
|---|---|---|
| committer | Pali Rohár <pali.rohar@gmail.com> | 2012-09-22 10:20:49 +0200 |
| commit | 805bafacef08fd8c05a75f939e536c32ede50e22 (patch) | |
| tree | 2cf3537c0c90bdbe704c3dc5118b331b5a71671d /src/libusb-sniff.c | |
| parent | 40cd74c506390f18bc22d3b5c0b1ba2e618c2b82 (diff) | |
| download | 0xFFFF-805bafacef08fd8c05a75f939e536c32ede50e22.tar.bz2 | |
libusb-sniff: Disable printing output of libusb function if env USBSNIFF_SKIP_* is set
Diffstat (limited to 'src/libusb-sniff.c')
| -rw-r--r-- | src/libusb-sniff.c | 51 |
1 files changed, 32 insertions, 19 deletions
diff --git a/src/libusb-sniff.c b/src/libusb-sniff.c index 9477a3f..651e888 100644 --- a/src/libusb-sniff.c +++ b/src/libusb-sniff.c @@ -19,6 +19,7 @@ /* compile: gcc libusb-sniff.c -o libusb-sniff.so -W -Wall -O2 -fPIC -ldl -shared -m32 */ /* usage: sudo USBSNIFF_WAIT=1 LD_PRELOAD=./libusb-sniff.so flasher-3.5 ... */ +/* usage: sudo USBSNIFF_SKIP_READ=1 USBSNIFF_SKIP_WRITE=1 LD_PRELOAD=./libusb-sniff.so flasher-3.5 ... */ #define _GNU_SOURCE #include <stdio.h> @@ -69,12 +70,16 @@ int usb_bulk_write(usb_dev_handle * dev, int ep, const char * bytes, int size, i if ( ! real_usb_bulk_write ) real_usb_bulk_write = dlsym(RTLD_NEXT, "usb_bulk_write"); - printf("\n==== usb_bulk_write (ep=%d size=%d timeout=%d) ====\n", ep, size, timeout); - dump_bytes(bytes, size); - printf("====\n"); + if ( ! getenv("USBSNIFF_SKIP_WRITE") ) { + + printf("\n==== usb_bulk_write (ep=%d size=%d timeout=%d) ====\n", ep, size, timeout); + dump_bytes(bytes, size); + printf("====\n"); + + if ( getenv("USBSNIFF_WAIT") ) { + printf("Press ENTER"); fflush(stdout); getchar(); + } - if ( getenv("USBSNIFF_WAIT") ) { - printf("Press ENTER"); fflush(stdout); getchar(); } return real_usb_bulk_write(dev, ep, bytes, size, timeout); @@ -91,14 +96,18 @@ int usb_bulk_read(usb_dev_handle * dev, int ep, char * bytes, int size, int time ret = real_usb_bulk_read(dev, ep, bytes, size, timeout); - printf("\n==== usb_bulk_read (ep=%d size=%d timeout=%d) ret = %d ====\n", ep, size, timeout, ret); - if ( ret > 0 ) { - dump_bytes(bytes, ret); - printf("====\n"); - } + if ( ! getenv("USBSNIFF_SKIP_READ") ) { + + printf("\n==== usb_bulk_read (ep=%d size=%d timeout=%d) ret = %d ====\n", ep, size, timeout, ret); + if ( ret > 0 ) { + dump_bytes(bytes, ret); + printf("====\n"); + } + + if ( getenv("USBSNIFF_WAIT") ) { + printf("Press ENTER"); fflush(stdout); getchar(); + } - if ( getenv("USBSNIFF_WAIT") ) { - printf("Press ENTER"); fflush(stdout); getchar(); } return ret; @@ -115,14 +124,18 @@ int usb_control_msg(usb_dev_handle *dev, int requesttype, int request, int value ret = real_usb_control_msg(dev, requesttype, request, value, index, bytes, size, timeout); - printf("\n==== usb_control_msg(requesttype=%d, request=%d, value=%d, index=%d, size=%d, timeout=%d) ret = %d ====\n", requesttype, request, value, index, size, timeout, ret); - if ( ret > 0 ) { - dump_bytes(bytes, ret); - printf("====\n"); - } + if ( ! getenv("USBSNIFF_SKIP_CONTROL") ) { + + printf("\n==== usb_control_msg(requesttype=%d, request=%d, value=%d, index=%d, size=%d, timeout=%d) ret = %d ====\n", requesttype, request, value, index, size, timeout, ret); + if ( ret > 0 ) { + dump_bytes(bytes, ret); + printf("====\n"); + } + + if ( getenv("USBSNIFF_WAIT") ) { + printf("Press ENTER"); fflush(stdout); getchar(); + } - if ( getenv("USBSNIFF_WAIT") ) { - printf("Press ENTER"); fflush(stdout); getchar(); } return ret; |