/* * netsniff-ng - the packet sniffing beast * Copyright 2011 Daniel Borkmann. * Subject to the GPL, version 2. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include "xmalloc.h" #include "xutils.h" #include "die.h" extern int print_stun_probe(char *server, int sport, int tport); #define BINDING_REQUEST 0x0001 #define BINDING_RESPONSE 0x0101 #define MAPPED_ADDRESS 0x0001 #define TIMEOUT 5000 #define REQUEST_LEN 20 #define ID_COOKIE_FIELD htonl(((int) 'a' << 24) + \ ((int) 'c' << 16) + \ ((int) 'd' << 8) + \ (int) 'c') struct stun_header { uint16_t type; uint16_t len; uint32_t magic_cookie; uint32_t transid[3]; }; struct stun_attrib { uint16_t type; uint16_t len; uint8_t *value; }; struct stun_mapped_addr { uint8_t none; uint8_t family; uint16_t port; uint32_t ip; }; static int stun_test(const char *server_ip, int server_port, int tun_port) { int ret, sock; uint8_t pkt[256]; uint8_t rpkt[256]; size_t len, off, max; struct in_addr in; struct timeval timeout; struct stun_header *hdr, *rhdr; struct stun_attrib *attr; struct stun_mapped_addr *addr; struct sockaddr_in saddr, daddr; fd_set fdset; if (!server_ip) return -EINVAL; sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP); if (sock < 0) panic("Cannot obtain socket!\n"); set_reuseaddr(sock); saddr.sin_family = PF_INET; saddr.sin_port = htons(tun_port); saddr.sin_addr.s_addr = INADDR_ANY; ret = bind(sock, (struct sockaddr *) &saddr, sizeof(saddr)); if (ret) panic("Cannot bind udp socket!\n"); len = REQUEST_LEN; hdr = (struct stun_header *) pkt; hdr->type = htons(BINDING_REQUEST); hdr->len = 0; hdr->magic_cookie = ID_COOKIE_FIELD; hdr->transid[0] = htonl(rand()); hdr->transid[1] = htonl(rand()); hdr->transid[2] = htonl(rand()); daddr.sin_family = PF_INET; daddr.sin_port = htons(server_port); daddr.sin_addr.s_addr = inet_addr(server_ip); ret = sendto(sock, pkt, len, 0, (struct sockaddr *) &daddr, sizeof(daddr)); if (ret != len) { printf("Error sending request (%s)!\n", strerror(errno)); return -EIO; } timeout.tv_sec = TIMEOUT / 1000; timeout.tv_usec = (TIMEOUT % 1000) * 1000; FD_ZERO(&fdset); FD_SET(sock, &fdset); ret = select(sock + 1, &fdset, NULL, NULL, &timeout); if (ret <= 0) { printf("STUN server timeout!\n"); return -EIO; } memset(rpkt, 0, sizeof(rpkt)); len = read(sock, rpkt, sizeof(rpkt)); close(sock); if (len < REQUEST_LEN) { printf("Bad STUN response (%s)!\n", strerror(errno)); return -EIO; } rhdr = (struct stun_header *) rpkt; if (ntohs(rhdr->type) != BINDING_RESPONSE) { printf("Wrong STUN response type!\n"); return -EIO; } if (rhdr->len == 0) { printf("No attributes in STUN response!\n"); return -EIO; } if (rhdr->magic_cookie != hdr->magic_cookie || rhdr->transid[0] != hdr->transid[0] || rhdr->transid[1] != hdr->transid[1] || rhdr->transid[2] != hdr->transid[2]) { printf("Got wrong STUN transaction id!\n"); return -EIO; } off = REQUEST_LEN; max = ntohs(rhdr->len) + REQUEST_LEN; while (off + 8 < max) { attr = (struct stun_attrib *) (rpkt + off); if (ntohs(attr->type) != MAPPED_ADDRESS) goto next; addr = (struct stun_mapped_addr *) (rpkt + off + 4); if (addr->family != 0x1) break; in.s_addr = addr->ip; printf("Public mapping %s:%u!\n", inet_ntoa(in), ntohs(addr->port)); break; next: off += 4; off += ntohs(attr->len); } return 0; } int print_stun_probe(char *server, int sport, int tport) { char *address; struct hostent *hp; printf("STUN on %s:%u\n", server, sport); srand(time(NULL)); hp = gethostbyname(server); if (!hp) return -EIO; address = inet_ntoa(*(struct in_addr *) hp->h_addr_list[0]); return stun_test(address, sport, tport); } this.form.submit();'>mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2016-10-07 11:58:38 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2016-10-07 11:58:38 -0700
commitbc75450cc3db3485db1e289fef8c1028ba38296a (patch)
treecd7dca62f9f60524ed5241a9e2fbdce1c8ab0bb7 /Documentation
parente6e3d8f8f4f06caf25004c749bb2ba84f18c7d39 (diff)
parent179023e6af0c608ffb505821223f5580853ef6b8 (diff)
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid
Pull HID updates from Jiri Kosina: - Integrated Sensor Hub support (Cherrytrail+) from Srinivas Pandruvada - Big cleanup of Wacom driver; namely it's now using devres, and the standardized LED API so that libinput doesn't need to have root access any more, with substantial amount of other cleanups piggy-backing on top. All this from Benjamin Tissoires - Report descriptor parsing would now ignore and out-of-range System controls in case of the application actually being System Control. This fixes quite some issues with several devices, and allows us to remove a few ->report_fixup callbacks. From Benjamin Tissoires - ... a lot of other assorted small fixes and device ID additions * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid: (76 commits) HID: add missing \n to end of dev_warn messages HID: alps: fix multitouch cursor issue HID: hid-logitech: Documentation updates/corrections HID: hid-logitech: Improve Wingman Formula Force GP support HID: hid-logitech: Rewrite of descriptor for all DF wheels HID: hid-logitech: Compute combined pedals value HID: hid-logitech: Add combined pedal support Logitech wheels HID: hid-logitech: Introduce control for combined pedals feature HID: sony: Update copyright and add Dualshock 4 rate control note HID: sony: Defer the initial USB Sixaxis output report HID: sony: Relax duplicate checking for USB-only devices Revert "HID: microsoft: fix invalid rdesc for 3k kbd" HID: alps: fix error return code in alps_input_configured() HID: alps: fix stick device not working after resume HID: support for keyboard - Corsair STRAFE HID: alps: Fix memory leak HID: uclogic: Add support for UC-Logic TWHA60 v3 HID: uclogic: Override constant descriptors HID: uclogic: Support UGTizer GP0610 partially HID: uclogic: Add support for several more tablets ...
Diffstat (limited to 'Documentation')