}
}
+/*
+ * Flush any open log file.
+ */
+void logflush(void *handle) {
+ struct LogContext *ctx = (struct LogContext *)handle;
+ if (ctx->cfg.logtype > 0)
+ if (ctx->lgfp)
+ fflush(ctx->lgfp);
+}
+
/*
* Log an Event Log entry. Used in SSH packet logging mode; this is
* also as convenient a place as any to put the output of Event Log
* platforms. Platforms which don't have a meaningful stderr can
* just avoid defining FLAG_STDERR.
*/
-void log_eventlog(void *handle, char *event)
+void log_eventlog(void *handle, const char *event)
{
struct LogContext *ctx = (struct LogContext *)handle;
if ((flags & FLAG_STDERR) && (flags & FLAG_VERBOSE)) {
/*
* Log an SSH packet.
+ * If n_blanks != 0, blank or omit some parts.
+ * Set of blanking areas must be in increasing order.
*/
void log_packet(void *handle, int direction, int type,
- char *texttype, void *data, int len)
+ char *texttype, void *data, int len,
+ int n_blanks, const struct logblank_t *blanks)
{
struct LogContext *ctx = (struct LogContext *)handle;
- int i, j;
char dumpdata[80], smalldata[5];
if (ctx->cfg.logtype != LGTYP_PACKETS)
if (!ctx->lgfp)
logfopen(ctx);
if (ctx->lgfp) {
+ int p = 0, b = 0, omitted = 0;
+ int output_pos = 0; /* NZ if pending output in dumpdata */
+
+ /* Packet header. */
fprintf(ctx->lgfp, "%s packet type %d / 0x%02x (%s)\r\n",
direction == PKT_INCOMING ? "Incoming" : "Outgoing",
type, type, texttype);
- for (i = 0; i < len; i += 16) {
- sprintf(dumpdata, " %08x%*s\r\n", i, 1+3*16+2+16, "");
- for (j = 0; j < 16 && i+j < len; j++) {
- int c = ((unsigned char *)data)[i+j];
- sprintf(smalldata, "%02x", c);
- dumpdata[10+2+3*j] = smalldata[0];
- dumpdata[10+2+3*j+1] = smalldata[1];
- dumpdata[10+1+3*16+2+j] = (isprint(c) ? c : '.');
+
+ /*
+ * Output a hex/ASCII dump of the packet body, blanking/omitting
+ * parts as specified.
+ */
+ while (p < len) {
+ int blktype;
+
+ /* Move to a current entry in the blanking array. */
+ while ((b < n_blanks) &&
+ (p >= blanks[b].offset + blanks[b].len))
+ b++;
+ /* Work out what type of blanking to apply to
+ * this byte. */
+ blktype = PKTLOG_EMIT; /* default */
+ if ((b < n_blanks) &&
+ (p >= blanks[b].offset) &&
+ (p < blanks[b].offset + blanks[b].len))
+ blktype = blanks[b].type;
+
+ /* If we're about to stop omitting, it's time to say how
+ * much we omitted. */
+ if ((blktype != PKTLOG_OMIT) && omitted) {
+ fprintf(ctx->lgfp, " (%d byte%s omitted)\r\n",
+ omitted, (omitted==1?"":"s"));
+ omitted = 0;
}
- strcpy(dumpdata + 10+1+3*16+2+j, "\r\n");
- fputs(dumpdata, ctx->lgfp);
+
+ /* (Re-)initialise dumpdata as necessary
+ * (start of row, or if we've just stopped omitting) */
+ if (!output_pos && !omitted)
+ sprintf(dumpdata, " %08x%*s\r\n", p-(p%16), 1+3*16+2+16, "");
+
+ /* Deal with the current byte. */
+ if (blktype == PKTLOG_OMIT) {
+ omitted++;
+ } else {
+ int c;
+ if (blktype == PKTLOG_BLANK) {
+ c = 'X';
+ sprintf(smalldata, "XX");
+ } else { /* PKTLOG_EMIT */
+ c = ((unsigned char *)data)[p];
+ sprintf(smalldata, "%02x", c);
+ }
+ dumpdata[10+2+3*(p%16)] = smalldata[0];
+ dumpdata[10+2+3*(p%16)+1] = smalldata[1];
+ dumpdata[10+1+3*16+2+(p%16)] = (isprint(c) ? c : '.');
+ output_pos = (p%16) + 1;
+ }
+
+ p++;
+
+ /* Flush row if necessary */
+ if (((p % 16) == 0) || (p == len) || omitted) {
+ if (output_pos) {
+ strcpy(dumpdata + 10+1+3*16+2+output_pos, "\r\n");
+ fputs(dumpdata, ctx->lgfp);
+ output_pos = 0;
+ }
+ }
+
}
+
+ /* Tidy up */
+ if (omitted)
+ fprintf(ctx->lgfp, " (%d byte%s omitted)\r\n",
+ omitted, (omitted==1?"":"s"));
fflush(ctx->lgfp);
}
}
void *log_init(void *frontend, Config *cfg)
{
- struct LogContext *ctx = smalloc(sizeof(struct LogContext));
+ struct LogContext *ctx = snew(struct LogContext);
ctx->lgfp = NULL;
ctx->frontend = frontend;
ctx->cfg = *cfg; /* STRUCTURE COPY */
}
*d = '\0';
- *dest = filename_from_str(d);
+ *dest = filename_from_str(buffer);
}