#include #include #include #include #include #include #include #include #include #include #include #include #include #include "xmalloc.h" #include "die.h" #include "sock.h" #include "stun.h" #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); memset(&saddr, 0, sizeof(saddr)); 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)); goto close_error; } 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"); goto close_error; } 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; close_error: close(sock); return -EIO; } 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); } ange='this.form.submit();'>mode:
authorVaibhav Agarwal <vaibhav.agarwal@linaro.org>2016-09-01 11:38:42 +0530
committerGreg Kroah-Hartman <gregkh@google.com>2016-09-02 14:13:39 +0200
commit6a57ddc97acb2a1d37ce94a237dc0fab2e5a3f5b (patch)
treeaf00489278feb104a7df3942716f8dee3448fbfb /drivers
parentcec89df44692fa8cff2a52542b11878ee49b0d69 (diff)
greybus: audio: Avoid reporting spurious button events
Now jack-button are registered to snd framework based on capabilities populated by codec module's topology data. Thus, valid ids for button events can also vary for different modules. This patch modifies existing button reporting mechanism to avoid reporting spurious button events for invalid button ids. Signed-off-by: Vaibhav Agarwal <vaibhav.agarwal@linaro.org> Reviewed-by: Mark Greer <mgreer@animalcreek.com> Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Diffstat (limited to 'drivers')