diff options
Diffstat (limited to 'savefile.c')
| -rw-r--r-- | savefile.c | 93 |
1 files changed, 55 insertions, 38 deletions
diff --git a/savefile.c b/savefile.c index 8115749b1343..0ab2fdefb201 100644 --- a/savefile.c +++ b/savefile.c @@ -28,11 +28,6 @@ * dependent values so we can print the dump file on any architecture. */ -#ifndef lint -static const char rcsid[] _U_ = - "@(#) $Header: /tcpdump/master/libpcap/savefile.c,v 1.183 2008-12-23 20:13:29 guy Exp $ (LBL)"; -#endif - #ifdef HAVE_CONFIG_H #include "config.h" #endif @@ -160,18 +155,19 @@ sf_setdirection(pcap_t *p, pcap_direction_t d) return (-1); } -static void +void sf_cleanup(pcap_t *p) { - if (p->sf.rfile != stdin) - (void)fclose(p->sf.rfile); + if (p->rfile != stdin) + (void)fclose(p->rfile); if (p->buffer != NULL) free(p->buffer); pcap_freecode(&p->fcode); } pcap_t * -pcap_open_offline(const char *fname, char *errbuf) +pcap_open_offline_with_tstamp_precision(const char *fname, u_int precision, + char *errbuf) { FILE *fp; pcap_t *p; @@ -199,7 +195,7 @@ pcap_open_offline(const char *fname, char *errbuf) return (NULL); } } - p = pcap_fopen_offline(fp, errbuf); + p = pcap_fopen_offline_with_tstamp_precision(fp, precision, errbuf); if (p == NULL) { if (fp != stdin) fclose(fp); @@ -207,8 +203,16 @@ pcap_open_offline(const char *fname, char *errbuf) return (p); } +pcap_t * +pcap_open_offline(const char *fname, char *errbuf) +{ + return (pcap_open_offline_with_tstamp_precision(fname, + PCAP_TSTAMP_PRECISION_MICRO, errbuf)); +} + #ifdef WIN32 -pcap_t* pcap_hopen_offline(intptr_t osfd, char *errbuf) +pcap_t* pcap_hopen_offline_with_tstamp_precision(intptr_t osfd, u_int precision, + char *errbuf) { int fd; FILE *file; @@ -227,11 +231,18 @@ pcap_t* pcap_hopen_offline(intptr_t osfd, char *errbuf) return NULL; } - return pcap_fopen_offline(file, errbuf); + return pcap_fopen_offline_with_tstamp_precision(file, precision, + errbuf); +} + +pcap_t* pcap_hopen_offline(intptr_t osfd, char *errbuf) +{ + return pcap_hopen_offline_with_tstamp_precision(osfd, + PCAP_TSTAMP_PRECISION_MICRO, errbuf); } #endif -static int (*check_headers[])(pcap_t *, bpf_u_int32, FILE *, char *) = { +static pcap_t *(*check_headers[])(bpf_u_int32, FILE *, u_int, char *, int *) = { pcap_check_header, pcap_ng_check_header }; @@ -242,16 +253,14 @@ static int (*check_headers[])(pcap_t *, bpf_u_int32, FILE *, char *) = { static #endif pcap_t * -pcap_fopen_offline(FILE *fp, char *errbuf) +pcap_fopen_offline_with_tstamp_precision(FILE *fp, u_int precision, + char *errbuf) { register pcap_t *p; bpf_u_int32 magic; size_t amt_read; u_int i; - - p = pcap_create_common("(savefile)", errbuf); - if (p == NULL) - return (NULL); + int err; /* * Read the first 4 bytes of the file; the network analyzer dump @@ -272,26 +281,23 @@ pcap_fopen_offline(FILE *fp, char *errbuf) (unsigned long)sizeof(magic), (unsigned long)amt_read); } - goto bad; + return (NULL); } /* * Try all file types. */ for (i = 0; i < N_FILE_TYPES; i++) { - switch ((*check_headers[i])(p, magic, fp, errbuf)) { - - case -1: + p = (*check_headers[i])(magic, fp, precision, errbuf, &err); + if (p != NULL) { + /* Yup, that's it. */ + goto found; + } + if (err) { /* * Error trying to read the header. */ - goto bad; - - case 1: - /* - * Yup, that's it. - */ - goto found; + return (NULL); } } @@ -299,15 +305,13 @@ pcap_fopen_offline(FILE *fp, char *errbuf) * Well, who knows what this mess is.... */ snprintf(errbuf, PCAP_ERRBUF_SIZE, "unknown file format"); - goto bad; + return (NULL); found: - p->sf.rfile = fp; + p->rfile = fp; -#ifdef PCAP_FDDIPAD /* Padding only needed for live capture fcode */ p->fddipad = 0; -#endif #if !defined(WIN32) && !defined(MSDOS) /* @@ -333,13 +337,26 @@ found: p->setmode_op = sf_setmode; p->setmintocopy_op = sf_setmintocopy; #endif - p->cleanup_op = sf_cleanup; + + /* + * For offline captures, the standard one-shot callback can + * be used for pcap_next()/pcap_next_ex(). + */ + p->oneshot_callback = pcap_oneshot; + p->activated = 1; return (p); - bad: - free(p); - return (NULL); +} + +#ifdef WIN32 +static +#endif +pcap_t * +pcap_fopen_offline(FILE *fp, char *errbuf) +{ + return (pcap_fopen_offline_with_tstamp_precision(fp, + PCAP_TSTAMP_PRECISION_MICRO, errbuf)); } /* @@ -375,7 +392,7 @@ pcap_offline_read(pcap_t *p, int cnt, pcap_handler callback, u_char *user) return (n); } - status = p->sf.next_packet_op(p, &h, &data); + status = p->next_packet_op(p, &h, &data); if (status) { if (status == 1) return (0); |