Signed-off-by: Marek Lindner lindner_marek@yahoo.de --- tcpdump.c | 28 ++++++++++++++-------------- 1 files changed, 14 insertions(+), 14 deletions(-)

diff --git a/tcpdump.c b/tcpdump.c index beac2ac..1a4a9a0 100644 --- a/tcpdump.c +++ b/tcpdump.c @@ -46,7 +46,7 @@

#define LEN_CHECK(buff_len, check_len, desc) \ if ((size_t)(buff_len) < (check_len)) { \ - printf("Warning - dropping received %s packet as it is smaller than expected (%zu): %zu\n", \ + fprintf(stderr, "Warning - dropping received %s packet as it is smaller than expected (%zu): %zu\n", \ desc, (check_len), (size_t)(buff_len)); \ return; \ } @@ -586,7 +586,7 @@ static void parse_eth_hdr(unsigned char *packet_buff, ssize_t buff_len, int read break; case BATADV_VIS: if (dump_level & DUMP_TYPE_BATVIS) - printf("Warning - batman vis packet received: function not implemented yet\n"); + fprintf(stderr, "Warning - batman vis packet received: function not implemented yet\n"); break; case BATADV_UNICAST_FRAG: if (dump_level & DUMP_TYPE_BATFRAG) @@ -601,14 +601,14 @@ static void parse_eth_hdr(unsigned char *packet_buff, ssize_t buff_len, int read dump_batman_roam(packet_buff, buff_len, read_opt, time_printed); break; default: - printf("Warning - packet contains unknown batman packet type: 0x%02x\n", batman_ogm_packet->header.packet_type); + fprintf(stderr, "Warning - packet contains unknown batman packet type: 0x%02x\n", batman_ogm_packet->header.packet_type); break; }

break;

default: - printf("Warning - packet contains unknown ether type: 0x%04x\n", ntohs(eth_hdr->ether_type)); + fprintf(stderr, "Warning - packet contains unknown ether type: 0x%04x\n", ntohs(eth_hdr->ether_type)); break; } } @@ -747,7 +747,7 @@ int tcpdump(int argc, char **argv) }

if (argc <= found_args) { - printf("Error - target interface not specified\n"); + fprintf(stderr, "Error - target interface not specified\n"); tcpdump_usage(); return EXIT_FAILURE; } @@ -767,14 +767,14 @@ int tcpdump(int argc, char **argv) dump_if->dev = argv[found_args];

if (strlen(dump_if->dev) > IFNAMSIZ - 1) { - printf("Error - interface name too long: %s\n", dump_if->dev); + fprintf(stderr, "Error - interface name too long: %s\n", dump_if->dev); goto out; }

dump_if->raw_sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL));

if (dump_if->raw_sock < 0) { - printf("Error - can't create raw socket: %s\n", strerror(errno)); + fprintf(stderr, "Error - can't create raw socket: %s\n", strerror(errno)); goto out; }

@@ -783,7 +783,7 @@ int tcpdump(int argc, char **argv)

res = ioctl(dump_if->raw_sock, SIOCGIFHWADDR, &req); if (res < 0) { - printf("Error - can't create raw socket (SIOCGIFHWADDR): %s\n", strerror(errno)); + fprintf(stderr, "Error - can't create raw socket (SIOCGIFHWADDR): %s\n", strerror(errno)); close(dump_if->raw_sock); goto out; } @@ -796,7 +796,7 @@ int tcpdump(int argc, char **argv) case ARPHRD_IEEE80211_RADIOTAP: break; default: - printf("Error - interface '%s' is of unknown type: %i\n", dump_if->dev, dump_if->hw_type); + fprintf(stderr, "Error - interface '%s' is of unknown type: %i\n", dump_if->dev, dump_if->hw_type); goto out; }

@@ -806,7 +806,7 @@ int tcpdump(int argc, char **argv) res = ioctl(dump_if->raw_sock, SIOCGIFINDEX, &req);

if (res < 0) { - printf("Error - can't create raw socket (SIOCGIFINDEX): %s\n", strerror(errno)); + fprintf(stderr, "Error - can't create raw socket (SIOCGIFINDEX): %s\n", strerror(errno)); close(dump_if->raw_sock); goto out; } @@ -818,7 +818,7 @@ int tcpdump(int argc, char **argv) res = bind(dump_if->raw_sock, (struct sockaddr *)&dump_if->addr, sizeof(struct sockaddr_ll));

if (res < 0) { - printf("Error - can't bind raw socket: %s\n", strerror(errno)); + fprintf(stderr, "Error - can't bind raw socket: %s\n", strerror(errno)); close(dump_if->raw_sock); goto out; } @@ -844,7 +844,7 @@ int tcpdump(int argc, char **argv) continue;

if (res < 0) { - printf("Error - can't select on raw socket: %s\n", strerror(errno)); + fprintf(stderr, "Error - can't select on raw socket: %s\n", strerror(errno)); continue; }

@@ -855,12 +855,12 @@ int tcpdump(int argc, char **argv) read_len = read(dump_if->raw_sock, packet_buff, sizeof(packet_buff));

if (read_len < 0) { - printf("Error - can't read from interface '%s': %s\n", dump_if->dev, strerror(errno)); + fprintf(stderr, "Error - can't read from interface '%s': %s\n", dump_if->dev, strerror(errno)); continue; }

if ((size_t)read_len < sizeof(struct ether_header)) { - printf("Warning - dropping received packet as it is smaller than expected (%zu): %zd\n", + fprintf(stderr, "Warning - dropping received packet as it is smaller than expected (%zu): %zd\n", sizeof(struct ether_header), read_len); continue; }