forked from osmocom/wireshark
![Michal Labedzki](/assets/img/avatar_default.png)
"g_strlcpy" guarante that "dest" to be null-terminated. Also cosmetic change from file_subtype to encap. Change-Id: If188a08cf34dd9def4203404962571c273740636 Reviewed-on: https://code.wireshark.org/review/2718 Reviewed-by: Michal Labedzki <michal.labedzki@tieto.com>
543 lines
15 KiB
C
543 lines
15 KiB
C
/* logcat.c
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*
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* Copyright 2014, Michal Labedzki for Tieto Corporation
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "config.h"
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#include <string.h>
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#include <time.h>
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#include "wtap-int.h"
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#include "file_wrappers.h"
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#include "buffer.h"
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#include "logcat.h"
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enum dump_type_t {
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DUMP_BINARY,
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DUMP_BRIEF,
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DUMP_PROCESS,
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DUMP_TAG,
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DUMP_TIME,
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DUMP_THREAD,
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DUMP_THREADTIME,
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DUMP_LONG
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};
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struct dumper_t {
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enum dump_type_t type;
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};
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static gchar get_priority(const guint8 *priority) {
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static gchar priorities[] = "??VDIWEFS";
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if (*priority >= (guint8) sizeof(priorities))
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return '?';
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return priorities[(int) *priority];
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}
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static gchar *logcat_log(const struct dumper_t *dumper, guint32 seconds,
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gint microseconds, gint pid, gint tid, gchar priority, const gchar *tag,
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const gchar *log)
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{
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gchar time_buffer[15];
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time_t datetime;
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datetime = (time_t) seconds;
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switch (dumper->type) {
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case DUMP_BRIEF:
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return g_strdup_printf("%c/%-8s(%5i): %s\n",
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priority, tag, pid, log);
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case DUMP_PROCESS:
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/* NOTE: Last parameter should be "process name", not tag;
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Unfortunately, we do not have process name */
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return g_strdup_printf("%c(%5i) %s (%s)\n",
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priority, pid, log, "");
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case DUMP_TAG:
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return g_strdup_printf("%c/%-8s: %s\n",
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priority, tag, log);
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case DUMP_THREAD:
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return g_strdup_printf("%c(%5i:0x%02x) %s\n",
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priority, pid, tid, log);
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case DUMP_TIME:
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strftime(time_buffer, sizeof(time_buffer), "%m-%d %H:%M:%S",
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gmtime(&datetime));
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return g_strdup_printf("%s.%03i %c/%-8s(%5i): %s\n",
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time_buffer, microseconds, priority, tag, pid, log);
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case DUMP_THREADTIME:
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strftime(time_buffer, sizeof(time_buffer), "%m-%d %H:%M:%S",
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gmtime(&datetime));
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return g_strdup_printf("%s.%03i %5i %5i %c %-8s: %s\n",
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time_buffer, microseconds, pid, tid, priority, tag, log);
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case DUMP_LONG:
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strftime(time_buffer, sizeof(time_buffer), "%m-%d %H:%M:%S",
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gmtime(&datetime));
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return g_strdup_printf("[ %s.%03i %5i:0x%02x %c/%s ]\n%s\n\n",
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time_buffer, microseconds, pid, tid, priority, tag, log);
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default:
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return NULL;
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}
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}
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static gint detect_version(wtap *wth, int *err, gchar **err_info)
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{
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gint bytes_read;
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guint16 payload_length;
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guint16 try_header_size;
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guint8 *buffer;
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gint64 file_offset;
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guint32 log_length;
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guint32 tag_length;
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guint16 tmp;
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file_offset = file_tell(wth->fh);
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bytes_read = file_read(&tmp, 2, wth->fh);
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if (bytes_read != 2) {
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*err = file_error(wth->fh, err_info);
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if (*err == 0 && bytes_read != 0)
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*err = WTAP_ERR_SHORT_READ;
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return -1;
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}
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payload_length = pletoh16(&tmp);
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bytes_read = file_read(&tmp, 2, wth->fh);
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if (bytes_read != 2) {
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*err = file_error(wth->fh, err_info);
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if (*err == 0 && bytes_read != 0)
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*err = WTAP_ERR_SHORT_READ;
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return -1;
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}
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try_header_size = pletoh16(&tmp);
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buffer = (guint8 *) g_malloc(5 * 4 + payload_length);
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bytes_read = file_read(buffer, 5 * 4 + payload_length, wth->fh);
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if (bytes_read != 5 * 4 + payload_length) {
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if (bytes_read != 4 * 4 + payload_length) {
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*err = file_error(wth->fh, err_info);
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if (*err == 0 && bytes_read != 0)
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*err = WTAP_ERR_SHORT_READ;
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g_free(buffer);
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return -1;
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}
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}
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if (try_header_size == 24) {
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tag_length = (guint32)strlen(buffer + 5 * 4 + 1) + 1;
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log_length = (guint32)strlen(buffer + 5 * 4 + 1 + tag_length) + 1;
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if (payload_length == 1 + tag_length + log_length) {
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g_free(buffer);
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return 2;
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}
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}
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tag_length = (guint32)strlen(buffer + 4 * 4 + 1) + 1;
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log_length = (guint32)strlen(buffer + 4 * 4 + 1 + tag_length) + 1;
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if (payload_length == 1 + tag_length + log_length) {
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if (file_seek(wth->fh, file_offset + 4 * 4 + 1 + tag_length + log_length, SEEK_SET, err) == -1) {
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g_free(buffer);
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return -1;
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}
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g_free(buffer);
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return 1;
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}
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g_free(buffer);
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return 0;
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}
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static gboolean logcat_read_packet(struct logcat_phdr *logcat, FILE_T fh,
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struct wtap_pkthdr *phdr, Buffer *buf, int *err, gchar **err_info)
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{
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gint bytes_read;
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gint packet_size;
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guint16 payload_length;
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guint tmp[2];
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guint8 *pd;
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bytes_read = file_read(&tmp, 2, fh);
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if (bytes_read != 2) {
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*err = file_error(fh, err_info);
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if (*err == 0 && bytes_read != 0)
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*err = WTAP_ERR_SHORT_READ;
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return FALSE;
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}
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payload_length = pletoh16(tmp);
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if (logcat->version == 1) {
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packet_size = 5 * 4 + payload_length;
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} else if (logcat->version == 2) {
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packet_size = 6 * 4 + payload_length;
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} else {
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return FALSE;
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}
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buffer_assure_space(buf, packet_size);
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pd = buffer_start_ptr(buf);
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/* Copy the first two bytes of the packet. */
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memcpy(pd, tmp, 2);
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/* Read the rest of the packet. */
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bytes_read = file_read(pd + 2, packet_size - 2, fh);
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if (bytes_read != packet_size - 2) {
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*err = file_error(fh, err_info);
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if (*err == 0)
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*err = WTAP_ERR_SHORT_READ;
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return FALSE;
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}
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phdr->rec_type = REC_TYPE_PACKET;
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phdr->presence_flags = WTAP_HAS_TS;
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phdr->ts.secs = (time_t) pletoh32(pd + 12);
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phdr->ts.nsecs = (int) pletoh32(pd + 16);
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phdr->caplen = packet_size;
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phdr->len = packet_size;
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phdr->pseudo_header.logcat.version = logcat->version;
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return TRUE;
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}
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static gboolean logcat_read(wtap *wth, int *err, gchar **err_info,
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gint64 *data_offset)
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{
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*data_offset = file_tell(wth->fh);
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return logcat_read_packet((struct logcat_phdr *) wth->priv, wth->fh,
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&wth->phdr, wth->frame_buffer, err, err_info);
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}
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static gboolean logcat_seek_read(wtap *wth, gint64 seek_off,
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struct wtap_pkthdr *phdr, Buffer *buf,
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int *err, gchar **err_info)
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{
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if (file_seek(wth->random_fh, seek_off, SEEK_SET, err) == -1)
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return FALSE;
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if (!logcat_read_packet((struct logcat_phdr *) wth->priv, wth->random_fh,
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phdr, buf, err, err_info)) {
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if (*err == 0)
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*err = WTAP_ERR_SHORT_READ;
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return FALSE;
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}
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return TRUE;
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}
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int logcat_open(wtap *wth, int *err, gchar **err_info _U_)
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{
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int local_err;
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gchar *local_err_info;
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gint version;
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gint tmp_version;
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struct logcat_phdr *logcat;
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/* check first 3 packets (or 2 or 1 if EOF) versions to check file format is correct */
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version = detect_version(wth, &local_err, &local_err_info);
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if (version <= 0)
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return 0;
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tmp_version = detect_version(wth, &local_err, &local_err_info);
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if (tmp_version < 0 && !file_eof(wth->fh)) {
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return 0;
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} else if (tmp_version > 0) {
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if (tmp_version != version)
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return 0;
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tmp_version = detect_version(wth, &local_err, &local_err_info);
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if (tmp_version != version && !file_eof(wth->fh))
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return 0;
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}
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if (file_seek(wth->fh, 0, SEEK_SET, err) == -1)
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return -1;
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logcat = (struct logcat_phdr *) g_malloc(sizeof(struct logcat_phdr));
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logcat->version = version;
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wth->priv = logcat;
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wth->file_type_subtype = WTAP_FILE_TYPE_SUBTYPE_LOGCAT;
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wth->file_encap = WTAP_ENCAP_LOGCAT;
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wth->snapshot_length = 0;
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wth->subtype_read = logcat_read;
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wth->subtype_seek_read = logcat_seek_read;
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wth->tsprecision = WTAP_FILE_TSPREC_USEC;
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return 1;
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}
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int logcat_dump_can_write_encap(int encap)
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{
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if (encap == WTAP_ENCAP_PER_PACKET)
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return WTAP_ERR_ENCAP_PER_PACKET_UNSUPPORTED;
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if (encap != WTAP_ENCAP_LOGCAT)
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return WTAP_ERR_UNSUPPORTED_ENCAP;
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return 0;
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}
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static gboolean logcat_binary_dump(wtap_dumper *wdh,
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const struct wtap_pkthdr *phdr,
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const guint8 *pd, int *err)
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{
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/* We can only write packet records. */
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if (phdr->rec_type != REC_TYPE_PACKET) {
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*err = WTAP_ERR_REC_TYPE_UNSUPPORTED;
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return FALSE;
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}
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if (!wtap_dump_file_write(wdh, pd, phdr->caplen, err))
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return FALSE;
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wdh->bytes_dumped += phdr->caplen;
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return TRUE;
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}
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gboolean logcat_binary_dump_open(wtap_dumper *wdh, int *err)
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{
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wdh->subtype_write = logcat_binary_dump;
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wdh->subtype_close = NULL;
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switch (wdh->encap) {
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case WTAP_ENCAP_LOGCAT:
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wdh->tsprecision = WTAP_FILE_TSPREC_USEC;
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break;
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default:
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*err = WTAP_ERR_UNSUPPORTED_FILE_TYPE;
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return FALSE;
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}
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return TRUE;
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}
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static gboolean logcat_dump_text(wtap_dumper *wdh,
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const struct wtap_pkthdr *phdr,
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const guint8 *pd, int *err)
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{
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gchar *buf;
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gint length;
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gchar priority;
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const gchar *tag;
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const gint *pid;
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const gint *tid;
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const gchar *log;
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gchar *log_part;
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const gchar *str_begin;
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const gchar *str_end;
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const guint32 *datetime;
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const guint32 *nanoseconds;
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const union wtap_pseudo_header *pseudo_header = &phdr->pseudo_header;
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const struct dumper_t *dumper = (const struct dumper_t *) wdh->priv;
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/* We can only write packet records. */
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if (phdr->rec_type != REC_TYPE_PACKET) {
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*err = WTAP_ERR_REC_TYPE_UNSUPPORTED;
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return FALSE;
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}
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if (pseudo_header->logcat.version == 1) {
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pid = (const gint *) (pd + 4);
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tid = (const gint *) (pd + 2 * 4);
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datetime = (const guint32 *) (pd + 3 * 4);
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nanoseconds = (const guint32 *) (pd + 4 * 4);
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priority = get_priority((const guint8 *) (pd + 5 * 4));
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tag = (const gchar *) (pd + 5 * 4 + 1);
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log = tag + strlen(tag) + 1;
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} else if (pseudo_header->logcat.version == 2) {
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pid = (const gint *) (pd + 4);
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tid = (const gint *) (pd + 2 * 4);
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datetime = (const guint32 *) (pd + 3 * 4);
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nanoseconds = (const guint32 *) (pd + 4 * 4);
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priority = get_priority((const guint8 *) (pd + 6 * 4));
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tag = (const char *) (pd + 6 * 4 + 1);
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log = tag + strlen(tag) + 1;
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} else {
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*err = WTAP_ERR_UNSUPPORTED;
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return FALSE;
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}
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str_begin = str_end = log;
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while (dumper->type != DUMP_LONG && (str_end = strchr(str_begin, '\n'))) {
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log_part = (gchar *) g_malloc(str_end - str_begin + 1);
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g_strlcpy(log_part, str_begin, str_end - str_begin + 1);
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str_begin = str_end + 1;
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buf = logcat_log(dumper, *datetime, *nanoseconds / 1000000, *pid, *tid,
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priority, tag, log_part);
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if (!buf) {
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g_free(log_part);
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return FALSE;
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}
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g_free(log_part);
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length = (guint32)strlen(buf);
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if (!wtap_dump_file_write(wdh, buf, length, err)) {
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g_free(buf);
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return FALSE;
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}
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wdh->bytes_dumped += length;
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g_free(buf);
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}
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if (*str_begin != '\0') {
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log_part = (gchar *) g_malloc(strlen(str_begin) + 1);
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g_strlcpy(log_part, str_begin, strlen(str_begin) + 1);
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buf = logcat_log(dumper, *datetime, *nanoseconds / 1000000, *pid, *tid,
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priority, tag, log_part);
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if (!buf) {
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g_free(log_part);
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return FALSE;
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}
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g_free(log_part);
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length = (guint32)strlen(buf);
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if (!wtap_dump_file_write(wdh, buf, length, err)) {
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g_free(buf);
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return FALSE;
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}
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wdh->bytes_dumped += length;
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g_free(buf);
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}
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return TRUE;
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}
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gboolean logcat_text_brief_dump_open(wtap_dumper *wdh, int *err _U_)
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{
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struct dumper_t *dumper;
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dumper = (struct dumper_t *) g_malloc(sizeof(struct dumper_t));
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dumper->type = DUMP_BRIEF;
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wdh->priv = dumper;
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wdh->subtype_write = logcat_dump_text;
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wdh->subtype_close = NULL;
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return TRUE;
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}
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gboolean logcat_text_process_dump_open(wtap_dumper *wdh, int *err _U_)
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{
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struct dumper_t *dumper;
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dumper = (struct dumper_t *) g_malloc(sizeof(struct dumper_t));
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dumper->type = DUMP_PROCESS;
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wdh->priv = dumper;
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wdh->subtype_write = logcat_dump_text;
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wdh->subtype_close = NULL;
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return TRUE;
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}
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gboolean logcat_text_tag_dump_open(wtap_dumper *wdh, int *err _U_)
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{
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struct dumper_t *dumper;
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dumper = (struct dumper_t *) g_malloc(sizeof(struct dumper_t));
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dumper->type = DUMP_TAG;
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wdh->priv = dumper;
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wdh->subtype_write = logcat_dump_text;
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wdh->subtype_close = NULL;
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return TRUE;
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}
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gboolean logcat_text_time_dump_open(wtap_dumper *wdh, int *err _U_)
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{
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struct dumper_t *dumper;
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dumper = (struct dumper_t *) g_malloc(sizeof(struct dumper_t));
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dumper->type = DUMP_TIME;
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wdh->priv = dumper;
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wdh->subtype_write = logcat_dump_text;
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wdh->subtype_close = NULL;
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return TRUE;
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}
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gboolean logcat_text_thread_dump_open(wtap_dumper *wdh, int *err _U_)
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{
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struct dumper_t *dumper;
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dumper = (struct dumper_t *) g_malloc(sizeof(struct dumper_t));
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dumper->type = DUMP_THREAD;
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|
|
|
wdh->priv = dumper;
|
|
wdh->subtype_write = logcat_dump_text;
|
|
wdh->subtype_close = NULL;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
gboolean logcat_text_threadtime_dump_open(wtap_dumper *wdh, int *err _U_)
|
|
{
|
|
struct dumper_t *dumper;
|
|
|
|
dumper = (struct dumper_t *) g_malloc(sizeof(struct dumper_t));
|
|
dumper->type = DUMP_THREADTIME;
|
|
|
|
wdh->priv = dumper;
|
|
wdh->subtype_write = logcat_dump_text;
|
|
wdh->subtype_close = NULL;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
gboolean logcat_text_long_dump_open(wtap_dumper *wdh, int *err _U_)
|
|
{
|
|
struct dumper_t *dumper;
|
|
|
|
dumper = (struct dumper_t *) g_malloc(sizeof(struct dumper_t));
|
|
dumper->type = DUMP_LONG;
|
|
|
|
wdh->priv = dumper;
|
|
wdh->subtype_write = logcat_dump_text;
|
|
wdh->subtype_close = NULL;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/*
|
|
* Editor modelines - http://www.wireshark.org/tools/modelines.html
|
|
*
|
|
* Local variables:
|
|
* c-basic-offset: 4
|
|
* tab-width: 8
|
|
* indent-tabs-mode: nil
|
|
* End:
|
|
*
|
|
* vi: set shiftwidth=4 tabstop=8 expandtab:
|
|
* :indentSize=4:tabSize=8:noTabs=true:
|
|
*/
|