diff options
Diffstat (limited to 'wiretap/5views.c')
| -rw-r--r-- | wiretap/5views.c | 469 |
1 files changed, 469 insertions, 0 deletions
diff --git a/wiretap/5views.c b/wiretap/5views.c new file mode 100644 index 0000000000..98764fb101 --- /dev/null +++ b/wiretap/5views.c @@ -0,0 +1,469 @@ +/* 5views.c + * + * $Id: 5views.c,v 1.1 2003/07/29 19:42:00 guy Exp $ + * + * Wiretap Library + * Copyright (c) 1998 by Gilbert Ramirez <gram@alumni.rice.edu> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + */ + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif +#include <errno.h> +#include <string.h> +#include <time.h> + +#include "wtap-int.h" +#include "file_wrappers.h" +#include "buffer.h" + + +typedef struct +{ + unsigned int Signature; + int Size; /* Total size of Header in bytes (included Signature) */ + int Version; /* Identify version and so the format of this record */ + int DataSize; /* Total size of data included in the Info Record (except the header size) */ + int FileType; /* Type of the file */ + int Reserved[3]; /* Reserved for future use */ +}t_5VW_Info_Header; + +typedef struct +{ + unsigned int Type; /* Id of the attribute */ + unsigned short Size; /* Size of the data part of the attribute (not including header size) */ + unsigned short Nb; /* Number of elements */ +}t_5VW_Attributes_Header; + + +#define CST_5VW_INFO_HEADER_KEY 0xAAAAAAAA /* signature */ + +#define CST_5VW_INFO_RECORD_VERSION 0x00010000 /* version */ + +#define CST_5VW_DECALE_FILE_TYPE 24 +#define CST_5VW_SECTION_CAPTURES 0x08 +#define CST_5VW_CAPTURES_FILE (CST_5VW_SECTION_CAPTURES << CST_5VW_DECALE_FILE_TYPE) /* 0x08000000 */ +#define CST_5VW_FLAT_FILE 0x10000000 +#define CST_5VW_CAPTURE_FILEID (CST_5VW_FLAT_FILE | CST_5VW_CAPTURES_FILE) +#define CST_5VW_FAMILY_CAP_ETH 0x01 +#define CST_5VW_FAMILY_CAP_WAN 0x02 +#define CST_5VW_DECALE_FILE_FAMILY 12 +#define CST_5VW_CAP_ETH (CST_5VW_FAMILY_CAP_ETH << CST_5VW_DECALE_FILE_FAMILY) /* 0x00001000 */ +#define CST_5VW_CAP_WAN (CST_5VW_FAMILY_CAP_WAN << CST_5VW_DECALE_FILE_FAMILY) /* 0x00002000 */ +#define CST_5VW_CAPTURE_ETH_FILEID (CST_5VW_CAPTURE_FILEID | CST_5VW_CAP_ETH) +#define CST_5VW_CAPTURE_WAN_FILEID (CST_5VW_CAPTURE_FILEID | CST_5VW_CAP_WAN) + +#define CST_5VW_CAPTURE_FILE_TYPE_MASK 0xFF000000 + +#define CST_5VW_FRAME_RECORD 0x00000000 +#define CST_5VW_RECORDS_HEADER_KEY 0x3333EEEE + +typedef struct +{ + t_5VW_Info_Header Info_Header; + t_5VW_Attributes_Header HeaderDateCreation; + unsigned long Time; + t_5VW_Attributes_Header HeaderNbFrames; + unsigned long TramesStockeesInFile; +}t_5VW_Capture_Header; + +typedef struct +{ + unsigned int Key; /* 0x3333EEEE */ + unsigned short HeaderSize; /* Actual size of this header in bytes (32) */ + unsigned short HeaderType; /* Exact type of this header (0x4000) */ + unsigned int RecType; /* Type of record */ + unsigned int RecSubType; /* Subtype of record */ + unsigned int RecSize; /* Size of one record */ + unsigned int RecNb; /* Number of records */ + unsigned long Utc; + unsigned long NanoSecondes; + unsigned int RecInfo; /* Info about Alarm / Event / Frame captured */ +}t_5VW_TimeStamped_Header; + + +#define CST_5VW_IA_CAP_INF_NB_TRAMES_STOCKEES 0x20000000 +#define CST_5VW_IA_DATE_CREATION 0x80000007 /* Struct t_Attrib_Date_Create */ +#define CST_5VW_TIMESTAMPED_HEADER_TYPE 0x4000 +#define CST_5VW_CAPTURES_RECORD (CST_5VW_SECTION_CAPTURES << 28) /* 0x80000000 */ +#define CST_5VW_SYSTEM_RECORD 0x00000000 + +static gboolean _5views_read(wtap *wth, int *err, long *data_offset); +static gboolean _5views_read_rec_data(FILE_T fh, guchar *pd, int length,int *err); +static int _5views_read_header(wtap *wth, FILE_T fh, t_5VW_TimeStamped_Header *hdr, int *err); +static gboolean _5views_seek_read(wtap *wth, long seek_off, union wtap_pseudo_header *pseudo_header, guchar *pd, int length, int *err); + + +static gboolean _5views_dump(wtap_dumper *wdh, const struct wtap_pkthdr *phdr, + const union wtap_pseudo_header *pseudo_header, const guchar *pd, int *err); +static gboolean _5views_dump_close(wtap_dumper *wdh, int *err); + + +int _5views_open(wtap *wth, int *err) +{ + int bytes_read; + t_5VW_Capture_Header Capture_Header; + int encap = WTAP_ENCAP_UNKNOWN; + + errno = WTAP_ERR_CANT_READ; + bytes_read = file_read(&Capture_Header.Info_Header, 1, sizeof(t_5VW_Info_Header), wth->fh); + if (bytes_read != sizeof(t_5VW_Info_Header)) { + *err = file_error(wth->fh); + if (*err != 0) + return -1; + return 0; + } + + wth->data_offset+=bytes_read; + + /* Check whether that's 5Views format or not */ + if(Capture_Header.Info_Header.Signature != CST_5VW_INFO_HEADER_KEY) + { + return 0; + } + + /* Check Version */ + switch (Capture_Header.Info_Header.Version) { + + case CST_5VW_INFO_RECORD_VERSION: + break; + + default: + g_message("5views: header version %u unsupported", Capture_Header.Info_Header.Version); + *err = WTAP_ERR_UNSUPPORTED; + return -1; + } + + /* Check File Type */ + if((Capture_Header.Info_Header.FileType & CST_5VW_CAPTURE_FILE_TYPE_MASK) != CST_5VW_CAPTURE_FILEID) + { + g_message("5views: file is not a capture file (filetype is %u)", Capture_Header.Info_Header.Version); + *err = WTAP_ERR_UNSUPPORTED; + return -1; + } + + /* Check possible Encap */ + switch (Capture_Header.Info_Header.FileType) { + case CST_5VW_CAPTURE_ETH_FILEID: + encap = WTAP_ENCAP_ETHERNET; + break; +/* case CST_5VW_CAPTURE_WAN_FILEID: + break; +*/ + default: + g_message("5views: network type %u unknown or unsupported", + Capture_Header.Info_Header.FileType); + *err = WTAP_ERR_UNSUPPORTED_ENCAP; + return -1; + } + + /* read the remaining header information */ + bytes_read = file_read(&Capture_Header.HeaderDateCreation, 1, sizeof (t_5VW_Capture_Header) - sizeof(t_5VW_Info_Header), wth->fh); + if (bytes_read != sizeof (t_5VW_Capture_Header)- sizeof(t_5VW_Info_Header) ) { + *err = file_error(wth->fh); + if (*err != 0) + return -1; + return 0; + } + wth->data_offset+=bytes_read; + + /* This is a 5views capture file */ + wth->file_type = WTAP_FILE_5VIEWS; + wth->subtype_read = _5views_read; + wth->subtype_seek_read = _5views_seek_read; + wth->file_encap = encap; + wth->snapshot_length = 0; /* not available in header */ + + return 1; +} + +/* Read the next packet */ +static gboolean +_5views_read(wtap *wth, int *err, long *data_offset) +{ + t_5VW_TimeStamped_Header TimeStamped_Header; + int bytes_read; + guint packet_size; + guint orig_size; + + do + { + bytes_read = _5views_read_header(wth, wth->fh, &TimeStamped_Header, err); + if (bytes_read == -1) { + /* + * We failed to read the header. + */ + return FALSE; + } + wth->data_offset += bytes_read; + + if(TimeStamped_Header.Key != CST_5VW_RECORDS_HEADER_KEY) + return FALSE; + + if(TimeStamped_Header.RecSubType != CST_5VW_FRAME_RECORD) { + if (file_seek(wth->fh, TimeStamped_Header.RecSize, SEEK_SET, err) == -1) + return FALSE; + wth->data_offset += TimeStamped_Header.RecSize; + } else + break; + } while (1); + + packet_size = TimeStamped_Header.RecSize; + orig_size = TimeStamped_Header.RecSize; + + *data_offset = wth->data_offset; + + buffer_assure_space(wth->frame_buffer, packet_size); + if (!_5views_read_rec_data(wth->fh, buffer_start_ptr(wth->frame_buffer), + packet_size, err)) + return FALSE; /* Read error */ + + wth->data_offset += packet_size; + wth->phdr.ts.tv_sec = TimeStamped_Header.Utc; + wth->phdr.ts.tv_usec = TimeStamped_Header.NanoSecondes/1000; + wth->phdr.caplen = packet_size; + wth->phdr.len = orig_size; + wth->phdr.pkt_encap = wth->file_encap; + + return TRUE; +} + + + +static gboolean +_5views_read_rec_data(FILE_T fh, guchar *pd, int length, int *err) +{ + int bytes_read; + + errno = WTAP_ERR_CANT_READ; + bytes_read = file_read(pd, 1, length, fh); + + if (bytes_read != length) { + *err = file_error(fh); + if (*err == 0) + *err = WTAP_ERR_SHORT_READ; + return FALSE; + } + return TRUE; +} + + +/* Read the header of the next packet; if "silent" is TRUE, don't complain + to the console, as we're testing to see if the file appears to be of a + particular type. + + Return -1 on an error, or the number of bytes of header read on success. */ +static int +_5views_read_header(wtap *wth _U_, FILE_T fh, t_5VW_TimeStamped_Header *hdr, int *err) +{ + int bytes_read, bytes_to_read; + + bytes_to_read = sizeof(t_5VW_TimeStamped_Header); + + /* Read record header. */ + bytes_read = file_read(hdr, 1, bytes_to_read, fh); + if (bytes_read != bytes_to_read) { + *err = file_error(fh); + if (*err == 0 && bytes_read != 0) { + *err = WTAP_ERR_SHORT_READ; + } + return -1; + } + + return bytes_read; +} + +static gboolean +_5views_seek_read(wtap *wth, long seek_off, + union wtap_pseudo_header *pseudo_header _U_, guchar *pd, int length, int *err) +{ + if (file_seek(wth->random_fh, seek_off, SEEK_SET, err) == -1) + return FALSE; + /* + * Read the packet data. + */ + if (!_5views_read_rec_data(wth->random_fh, pd, length, err)) + return FALSE; + + + return TRUE; +} + + + +static const int wtap_encap[] = { + -1, /* WTAP_ENCAP_UNKNOWN -> unsupported */ + CST_5VW_CAPTURE_ETH_FILEID, /* WTAP_ENCAP_ETHERNET -> Ehernet Ethernet */ + -1, /* WTAP_ENCAP_TOKEN_RING -> unsupported */ + -1, /* WTAP_ENCAP_SLIP -> unsupported */ + -1, /* WTAP_ENCAP_PPP -> unsupported */ + -1, /* WTAP_ENCAP_FDDI -> unsupported */ + -1, /* WTAP_ENCAP_FDDI_BITSWAPPED -> unsupported */ + -1, /* WTAP_ENCAP_RAW_IP -> unsupported */ + -1, /* WTAP_ENCAP_ARCNET -> unsupported */ + -1, /* WTAP_ENCAP_ATM_RFC1483 -> unsupported */ + -1, /* WTAP_ENCAP_LINUX_ATM_CLIP -> unsupported */ + -1, /* WTAP_ENCAP_LAPB -> unsupported */ + -1, /* WTAP_ENCAP_ATM_PDUS -> unsupported */ + -1 /* WTAP_ENCAP_NULL -> unsupported */ +}; +#define NUM_WTAP_ENCAPS (sizeof wtap_encap / sizeof wtap_encap[0]) + +/* Returns 0 if we could write the specified encapsulation type, + an error indication otherwise. */ +int _5views_dump_can_write_encap(int encap) +{ + /* Per-packet encapsulations aren't supported. */ + if (encap == WTAP_ENCAP_PER_PACKET) + return WTAP_ERR_ENCAP_PER_PACKET_UNSUPPORTED; + + if (encap < 0 || (unsigned) encap >= NUM_WTAP_ENCAPS || wtap_encap[encap] == -1) + return WTAP_ERR_UNSUPPORTED_ENCAP; + + return 0; +} + +/* Returns TRUE on success, FALSE on failure; sets "*err" to an error code on + failure */ +gboolean _5views_dump_open(wtap_dumper *wdh, gboolean cant_seek _U_, int *err) +{ + + /* We can't fill in all the fields in the file header, as we + haven't yet written any packets. As we'll have to rewrite + the header when we've written out all the packets, we just + skip over the header for now. */ + if (fseek(wdh->fh, sizeof(t_5VW_Capture_Header), SEEK_SET) == -1) { + *err = errno; + return FALSE; + } + + /* This is a 5Views file */ + wdh->subtype_write = _5views_dump; + wdh->subtype_close = _5views_dump_close; + wdh->dump._5views = g_malloc(sizeof(_5views_dump_t)); + + return TRUE; +} + +/* Write a record for a packet to a dump file. + Returns TRUE on success, FALSE on failure. */ +static gboolean _5views_dump(wtap_dumper *wdh, + const struct wtap_pkthdr *phdr, + const union wtap_pseudo_header *pseudo_header _U_, + const guchar *pd, int *err) +{ + + size_t nwritten; + static t_5VW_TimeStamped_Header HeaderFrame; + + /* Frame Header */ + /* constant fields */ + HeaderFrame.Key = CST_5VW_RECORDS_HEADER_KEY; + HeaderFrame.HeaderSize = sizeof(t_5VW_TimeStamped_Header); + HeaderFrame.HeaderType = CST_5VW_TIMESTAMPED_HEADER_TYPE; + HeaderFrame.RecType = (unsigned int) (CST_5VW_CAPTURES_RECORD | CST_5VW_SYSTEM_RECORD); + HeaderFrame.RecSubType = CST_5VW_FRAME_RECORD; + HeaderFrame.RecNb = 1; + + /* record-dependant fields */ + HeaderFrame.Utc = phdr->ts.tv_sec; + HeaderFrame.NanoSecondes = phdr->ts.tv_usec*1000; + HeaderFrame.RecSize = phdr->len; + HeaderFrame.RecInfo = 0; + + /* write the record header */ + nwritten = fwrite(&HeaderFrame, 1, sizeof(t_5VW_TimeStamped_Header), wdh->fh); + if (nwritten != sizeof(t_5VW_TimeStamped_Header)) { + if (nwritten == 0 && ferror(wdh->fh)) + *err = errno; + else + *err = WTAP_ERR_SHORT_WRITE; + return FALSE; + } + + /* write the data */ + nwritten = fwrite(pd, 1, phdr->caplen, wdh->fh); + if (nwritten != phdr->caplen) { + if (nwritten == 0 && ferror(wdh->fh)) + *err = errno; + else + *err = WTAP_ERR_SHORT_WRITE; + return FALSE; + } + + wdh->dump._5views->nframes ++; + + return TRUE; +} + +static gboolean _5views_dump_close(wtap_dumper *wdh, int *err) +{ + t_5VW_Capture_Header file_hdr; + size_t nwritten; + + if (fseek(wdh->fh, 0, SEEK_SET) == -1) { + *err = errno; + return FALSE; + } + + /* fill in the Info_Header */ + file_hdr.Info_Header.Signature = CST_5VW_INFO_HEADER_KEY; + file_hdr.Info_Header.Size = sizeof(t_5VW_Info_Header); /* Total size of Header in bytes (included Signature) */ + file_hdr.Info_Header.Version = CST_5VW_INFO_RECORD_VERSION; /* Identify version and so the format of this record */ + file_hdr.Info_Header.DataSize = sizeof(t_5VW_Attributes_Header) + sizeof(unsigned long) + + sizeof(t_5VW_Attributes_Header) + sizeof(unsigned long); /* Total size of data included in the Info Record (except the header size) */ + file_hdr.Info_Header.FileType = wtap_encap[wdh->encap]; /* Type of the file */ + file_hdr.Info_Header.Reserved[0] = 0; /* Reserved for future use */ + file_hdr.Info_Header.Reserved[1] = 0; /* Reserved for future use */ + file_hdr.Info_Header.Reserved[2] = 0; /* Reserved for future use */ + + /* fill in the HeaderDateCreation */ + file_hdr.HeaderDateCreation.Type = CST_5VW_IA_DATE_CREATION; /* Id of the attribute */ + file_hdr.HeaderDateCreation.Size = sizeof(unsigned long); /* Size of the data part of the attribute (not including header size) */ + file_hdr.HeaderDateCreation.Nb = 1; /* Number of elements */ + + /* fill in the Time field */ +#ifdef _WIN32 + _tzset(); +#endif + file_hdr.Time = time(NULL); + + /* fill in the Time field */ + file_hdr.HeaderNbFrames.Type = CST_5VW_IA_CAP_INF_NB_TRAMES_STOCKEES; /* Id of the attribute */ + file_hdr.HeaderNbFrames.Size = sizeof(unsigned long); /* Size of the data part of the attribute (not including header size) */ + file_hdr.HeaderNbFrames.Nb = 1; /* Number of elements */ + + /* fill in the number of frames saved */ + file_hdr.TramesStockeesInFile = wdh->dump._5views->nframes; + + + /* Write the file header. */ + nwritten = fwrite(&file_hdr, 1, sizeof(t_5VW_Capture_Header), wdh->fh); + if (nwritten != sizeof(t_5VW_Capture_Header)) { + if (nwritten == 0 && ferror(wdh->fh)) + *err = errno; + else + *err = WTAP_ERR_SHORT_WRITE; + return FALSE; + } + + /* Free the index table memory. */ + g_free(wdh->dump._5views); + + return TRUE; +} + |