diff options
Diffstat (limited to 'contrib/libpcap/pcap-snit.c')
| -rw-r--r-- | contrib/libpcap/pcap-snit.c | 66 |
1 files changed, 54 insertions, 12 deletions
diff --git a/contrib/libpcap/pcap-snit.c b/contrib/libpcap/pcap-snit.c index d3aaf1d..d022dd3 100644 --- a/contrib/libpcap/pcap-snit.c +++ b/contrib/libpcap/pcap-snit.c @@ -24,8 +24,8 @@ */ #ifndef lint -static const char rcsid[] = - "@(#) $Header: /tcpdump/master/libpcap/pcap-snit.c,v 1.56 2001/12/10 07:14:20 guy Exp $ (LBL)"; +static const char rcsid[] _U_ = + "@(#) $Header: /tcpdump/master/libpcap/pcap-snit.c,v 1.66.2.3 2003/11/21 10:20:48 guy Exp $ (LBL)"; #endif #ifdef HAVE_CONFIG_H @@ -84,8 +84,8 @@ static const char rcsid[] = /* Forwards */ static int nit_setflags(int, int, int, char *); -int -pcap_stats(pcap_t *p, struct pcap_stat *ps) +static int +pcap_stats_snit(pcap_t *p, struct pcap_stat *ps) { /* @@ -109,8 +109,8 @@ pcap_stats(pcap_t *p, struct pcap_stat *ps) return (0); } -int -pcap_read(pcap_t *p, int cnt, pcap_handler callback, u_char *user) +static int +pcap_read_snit(pcap_t *p, int cnt, pcap_handler callback, u_char *user) { register int cc, n; register struct bpf_insn *fcode = p->fcode.bf_insns; @@ -141,6 +141,26 @@ pcap_read(pcap_t *p, int cnt, pcap_handler callback, u_char *user) n = 0; ep = bp + cc; while (bp < ep) { + /* + * Has "pcap_breakloop()" been called? + * If so, return immediately - if we haven't read any + * packets, clear the flag and return -2 to indicate + * that we were told to break out of the loop, otherwise + * leave the flag set, so that the *next* call will break + * out of the loop without having read any packets, and + * return the number of packets we've processed so far. + */ + if (p->break_loop) { + if (n == 0) { + p->break_loop = 0; + return (-2); + } else { + p->bp = bp; + p->cc = ep - bp; + return (n); + } + } + ++p->md.stat.ps_recv; cp = bp; @@ -218,8 +238,18 @@ nit_setflags(int fd, int promisc, int to_ms, char *ebuf) return (0); } +static void +pcap_close_snit(pcap_t *p) +{ + if (p->buffer != NULL) + free(p->buffer); + if (p->fd >= 0) + close(p->fd); +} + pcap_t * -pcap_open_live(char *device, int snaplen, int promisc, int to_ms, char *ebuf) +pcap_open_live(const char *device, int snaplen, int promisc, int to_ms, + char *ebuf) { struct strioctl si; /* struct for ioctl() */ struct ifreq ifr; /* interface request struct */ @@ -272,7 +302,7 @@ pcap_open_live(char *device, int snaplen, int promisc, int to_ms, char *ebuf) /* request the interface */ strncpy(ifr.ifr_name, device, sizeof(ifr.ifr_name)); - ifr.ifr_name[sizeof(ifr.ifr_name) - 1] = ' '; + ifr.ifr_name[sizeof(ifr.ifr_name) - 1] = '\0'; si.ic_cmd = NIOCBIND; si.ic_len = sizeof(ifr); si.ic_dp = (char *)𝔦 @@ -307,6 +337,21 @@ pcap_open_live(char *device, int snaplen, int promisc, int to_ms, char *ebuf) strlcpy(ebuf, pcap_strerror(errno), PCAP_ERRBUF_SIZE); goto bad; } + + /* + * "p->fd" is an FD for a STREAMS device, so "select()" and + * "poll()" should work on it. + */ + p->selectable_fd = p->fd; + + p->read_op = pcap_read_snit; + p->setfilter_op = install_bpf_program; /* no kernel filtering */ + p->set_datalink_op = NULL; /* can't change data link type */ + p->getnonblock_op = pcap_getnonblock_fd; + p->setnonblock_op = pcap_setnonblock_fd; + p->stats_op = pcap_stats_snit; + p->close_op = pcap_close_snit; + return (p); bad: if (fd >= 0) @@ -316,10 +361,7 @@ pcap_open_live(char *device, int snaplen, int promisc, int to_ms, char *ebuf) } int -pcap_setfilter(pcap_t *p, struct bpf_program *fp) +pcap_platform_finddevs(pcap_if_t **alldevsp, char *errbuf) { - - if (install_bpf_program(p, fp) < 0) - return (-1); return (0); } |
