[u/mdw/putty] / logging.c

#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>

#include <time.h>
#include <assert.h>

#include "putty.h"

/* log session to file stuff ... */
struct LogContext {
    FILE *lgfp;
    enum { CLOSED, OPENING, OPEN, ERROR } state;
    bufchain queue;
    Filename currlogfilename;
    void *frontend;
    Config cfg;
};

static void xlatlognam(Filename *d, Filename s, char *hostname, struct tm *tm);

/*
 * Internal wrapper function which must be called for _all_ output
 * to the log file. It takes care of opening the log file if it
 * isn't open, buffering data if it's in the process of being
 * opened asynchronously, etc.
 */
static void logwrite(struct LogContext *ctx, void *data, int len)
{
    /*
     * In state CLOSED, we call logfopen, which will set the state
     * to one of OPENING, OPEN or ERROR. Hence we process all of
     * those three _after_ processing CLOSED.
     */
    if (ctx->state == CLOSED)
	logfopen(ctx);

    if (ctx->state == OPENING) {
	bufchain_add(&ctx->queue, data, len);
    } else if (ctx->state == OPEN) {
	assert(ctx->lgfp);
	fwrite(data, 1, len, ctx->lgfp);
    }				       /* else ERROR, so ignore the write */
}

/*
 * Convenience wrapper on logwrite() which printf-formats the
 * string.
 */
static void logprintf(struct LogContext *ctx, const char *fmt, ...)
{
    va_list ap;
    char *data;

    va_start(ap, fmt);
    data = dupvprintf(fmt, ap);
    va_end(ap);

    logwrite(ctx, data, strlen(data));
    sfree(data);
}

/*
 * Flush any open log file.
 */
void logflush(void *handle) {
    struct LogContext *ctx = (struct LogContext *)handle;
    if (ctx->cfg.logtype > 0)
	if (ctx->state == OPEN)
	    fflush(ctx->lgfp);
}

static void logfopen_callback(void *handle, int mode)
{
    struct LogContext *ctx = (struct LogContext *)handle;
    char buf[256], *event;
    struct tm tm;
    const char *fmode;

    if (mode == 0) {
	ctx->state = ERROR;	       /* disable logging */
    } else {
	fmode = (mode == 1 ? "a" : "w");
	ctx->lgfp = f_open(ctx->currlogfilename, fmode);
	if (ctx->lgfp)
	    ctx->state = OPEN;
	else
	    ctx->state = ERROR;
    }

    if (ctx->state == OPEN) {
	/* Write header line into log file. */
	tm = ltime();
	strftime(buf, 24, "%Y.%m.%d %H:%M:%S", &tm);
	logprintf(ctx, "=~=~=~=~=~=~=~=~=~=~=~= PuTTY log %s"
		  " =~=~=~=~=~=~=~=~=~=~=~=\r\n", buf);
    }

    event = dupprintf("%s session log (%s mode) to file: %s",
		      (mode == 0 ? "Disabled writing" :
                       mode == 1 ? "Appending" : "Writing new"),
		      (ctx->cfg.logtype == LGTYP_ASCII ? "ASCII" :
		       ctx->cfg.logtype == LGTYP_DEBUG ? "raw" :
		       ctx->cfg.logtype == LGTYP_PACKETS ? "SSH packets" :
		       "unknown"),
		      filename_to_str(&ctx->currlogfilename));
    logevent(ctx->frontend, event);
    sfree(event);

    /*
     * Having either succeeded or failed in opening the log file,
     * we should write any queued data out.
     */
    assert(ctx->state != OPENING);     /* make _sure_ it won't be requeued */
    while (bufchain_size(&ctx->queue)) {
	void *data;
	int len;
	bufchain_prefix(&ctx->queue, &data, &len);
	logwrite(ctx, data, len);
	bufchain_consume(&ctx->queue, len);
    }
}

/*
 * Open the log file. Takes care of detecting an already-existing
 * file and asking the user whether they want to append, overwrite
 * or cancel logging.
 */
void logfopen(void *handle)
{
    struct LogContext *ctx = (struct LogContext *)handle;
    struct tm tm;
    int mode;

    /* Prevent repeat calls */
    if (ctx->state != CLOSED)
	return;

    if (!ctx->cfg.logtype)
	return;

    tm = ltime();

    /* substitute special codes in file name */
    xlatlognam(&ctx->currlogfilename, ctx->cfg.logfilename,ctx->cfg.host, &tm);

    ctx->lgfp = f_open(ctx->currlogfilename, "r");  /* file already present? */
    if (ctx->lgfp) {
	fclose(ctx->lgfp);
	if (ctx->cfg.logxfovr != LGXF_ASK) {
	    mode = ((ctx->cfg.logxfovr == LGXF_OVR) ? 2 : 1);
	} else
	    mode = askappend(ctx->frontend, ctx->currlogfilename,
			     logfopen_callback, ctx);
    } else
	mode = 2;		       /* create == overwrite */

    if (mode < 0)
	ctx->state = OPENING;
    else
	logfopen_callback(ctx, mode);  /* open the file */
}

void logfclose(void *handle)
{
    struct LogContext *ctx = (struct LogContext *)handle;
    if (ctx->lgfp) {
	fclose(ctx->lgfp);
	ctx->lgfp = NULL;
    }
    ctx->state = CLOSED;
}

/*
 * Log session traffic.
 */
void logtraffic(void *handle, unsigned char c, int logmode)
{
    struct LogContext *ctx = (struct LogContext *)handle;
    if (ctx->cfg.logtype > 0) {
	if (ctx->cfg.logtype == logmode)
	    logwrite(ctx, &c, 1);
    }
}

/*
 * 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
 * entries to stderr when a command-line tool is in verbose mode.
 * (In particular, this is a better place to put it than in the
 * front ends, because it only has to be done once for all
 * platforms. Platforms which don't have a meaningful stderr can
 * just avoid defining FLAG_STDERR.
 */
void log_eventlog(void *handle, const char *event)
{
    struct LogContext *ctx = (struct LogContext *)handle;
    if ((flags & FLAG_STDERR) && (flags & FLAG_VERBOSE)) {
	fprintf(stderr, "%s\n", event);
	fflush(stderr);
    }
    if (ctx->cfg.logtype != LGTYP_PACKETS)
	return;
    logprintf(ctx, "Event Log: %s\r\n", event);
}

/*
 * 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,
		int n_blanks, const struct logblank_t *blanks)
{
    struct LogContext *ctx = (struct LogContext *)handle;
    char dumpdata[80], smalldata[5];
    int p = 0, b = 0, omitted = 0;
    int output_pos = 0; /* NZ if pending output in dumpdata */

    if (ctx->cfg.logtype != LGTYP_PACKETS)
	return;

    /* Packet header. */
    logprintf(ctx, "%s packet type %d / 0x%02x (%s)\r\n",
	      direction == PKT_INCOMING ? "Incoming" : "Outgoing",
	      type, type, texttype);

    /*
     * 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) {
	    logprintf(ctx, "  (%d byte%s omitted)\r\n",
		      omitted, (omitted==1?"":"s"));
	    omitted = 0;
	}

	/* (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");
		logwrite(ctx, dumpdata, strlen(dumpdata));
		output_pos = 0;
	    }
	}

    }

    /* Tidy up */
    if (omitted)
	logprintf(ctx, "  (%d byte%s omitted)\r\n",
		  omitted, (omitted==1?"":"s"));
    logflush(ctx);
}

void *log_init(void *frontend, Config *cfg)
{
    struct LogContext *ctx = snew(struct LogContext);
    ctx->lgfp = NULL;
    ctx->state = CLOSED;
    ctx->frontend = frontend;
    ctx->cfg = *cfg;		       /* STRUCTURE COPY */
    bufchain_init(&ctx->queue);
    return ctx;
}

void log_free(void *handle)
{
    struct LogContext *ctx = (struct LogContext *)handle;

    logfclose(ctx);
    bufchain_clear(&ctx->queue);
    sfree(ctx);
}

void log_reconfig(void *handle, Config *cfg)
{
    struct LogContext *ctx = (struct LogContext *)handle;
    int reset_logging;

    if (!filename_equal(ctx->cfg.logfilename, cfg->logfilename) ||
	ctx->cfg.logtype != cfg->logtype)
	reset_logging = TRUE;
    else
	reset_logging = FALSE;

    if (reset_logging)
	logfclose(ctx);

    ctx->cfg = *cfg;		       /* STRUCTURE COPY */

    if (reset_logging)
	logfopen(ctx);
}

/*
 * translate format codes into time/date strings
 * and insert them into log file name
 *
 * "&Y":YYYY   "&m":MM   "&d":DD   "&T":hhmm   "&h":<hostname>   "&&":&
 */
static void xlatlognam(Filename *dest, Filename src,
		       char *hostname, struct tm *tm) {
    char buf[10], *bufp;
    int size;
    char buffer[FILENAME_MAX];
    int len = sizeof(buffer)-1;
    char *d;
    const char *s;

    d = buffer;
    s = filename_to_str(&src);

    while (*s) {
	/* Let (bufp, len) be the string to append. */
	bufp = buf;		       /* don't usually override this */
	if (*s == '&') {
	    char c;
	    s++;
	    size = 0;
	    if (*s) switch (c = *s++, tolower(c)) {
	      case 'y':
		size = strftime(buf, sizeof(buf), "%Y", tm);
		break;
	      case 'm':
		size = strftime(buf, sizeof(buf), "%m", tm);
		break;
	      case 'd':
		size = strftime(buf, sizeof(buf), "%d", tm);
		break;
	      case 't':
		size = strftime(buf, sizeof(buf), "%H%M%S", tm);
		break;
	      case 'h':
		bufp = hostname;
		size = strlen(bufp);
		break;
	      default:
		buf[0] = '&';
		size = 1;
		if (c != '&')
		    buf[size++] = c;
	    }
	} else {
	    buf[0] = *s++;
	    size = 1;
	}
	if (size > len)
	    size = len;
	memcpy(d, bufp, size);
	d += size;
	len -= size;
    }
    *d = '\0';

    *dest = filename_from_str(buffer);
}
Commit	Line	Data
00db133f	1	#include <stdio.h>
	2	#include <stdlib.h>
	3	#include <ctype.h>
	4
	5	#include <time.h>
	6	#include <assert.h>
	7
	8	#include "putty.h"
	9
	10	/* log session to file stuff ... */
a8327734	11	struct LogContext {
a8327734	12	FILE *lgfp;
919baedb	13	enum { CLOSED, OPENING, OPEN, ERROR } state;
919baedb	14	bufchain queue;
9a30e26b	15	Filename currlogfilename;
a8327734	16	void *frontend;
c229ef97	17	Config cfg;
a8327734	18	};
00db133f	19
9a30e26b	20	static void xlatlognam(Filename d, Filename s, char hostname, struct tm *tm);
00db133f	21
00db133f	22	/*
919baedb	23	* Internal wrapper function which must be called for _all_ output
	24	* to the log file. It takes care of opening the log file if it
	25	* isn't open, buffering data if it's in the process of being
	26	* opened asynchronously, etc.
00db133f	27	*/
919baedb	28	static void logwrite(struct LogContext ctx, void data, int len)
00db133f	29	{
919baedb	30	/*
	31	* In state CLOSED, we call logfopen, which will set the state
	32	* to one of OPENING, OPEN or ERROR. Hence we process all of
	33	* those three _after_ processing CLOSED.
	34	*/
	35	if (ctx->state == CLOSED)
	36	logfopen(ctx);
	37
	38	if (ctx->state == OPENING) {
	39	bufchain_add(&ctx->queue, data, len);
	40	} else if (ctx->state == OPEN) {
	41	assert(ctx->lgfp);
	42	fwrite(data, 1, len, ctx->lgfp);
	43	} /* else ERROR, so ignore the write */
	44	}
	45
	46	/*
	47	* Convenience wrapper on logwrite() which printf-formats the
	48	* string.
	49	*/
	50	static void logprintf(struct LogContext ctx, const char fmt, ...)
	51	{
	52	va_list ap;
	53	char *data;
	54
	55	va_start(ap, fmt);
	56	data = dupvprintf(fmt, ap);
	57	va_end(ap);
	58
	59	logwrite(ctx, data, strlen(data));
	60	sfree(data);
00db133f	61	}
	62
	63	/*
11cc5e30	64	* Flush any open log file.
	65	*/
	66	void logflush(void *handle) {
	67	struct LogContext ctx = (struct LogContext )handle;
	68	if (ctx->cfg.logtype > 0)
919baedb	69	if (ctx->state == OPEN)
11cc5e30	70	fflush(ctx->lgfp);
	71	}
	72
919baedb	73	static void logfopen_callback(void *handle, int mode)
	74	{
	75	struct LogContext ctx = (struct LogContext )handle;
	76	char buf[256], *event;
	77	struct tm tm;
	78	const char *fmode;
	79
	80	if (mode == 0) {
	81	ctx->state = ERROR; /* disable logging */
	82	} else {
	83	fmode = (mode == 1 ? "a" : "w");
	84	ctx->lgfp = f_open(ctx->currlogfilename, fmode);
	85	if (ctx->lgfp)
	86	ctx->state = OPEN;
	87	else
	88	ctx->state = ERROR;
	89	}
	90
	91	if (ctx->state == OPEN) {
	92	/* Write header line into log file. */
	93	tm = ltime();
	94	strftime(buf, 24, "%Y.%m.%d %H:%M:%S", &tm);
	95	logprintf(ctx, "=~=~=~=~=~=~=~=~=~=~=~= PuTTY log %s"
	96	" =~=~=~=~=~=~=~=~=~=~=~=\r\n", buf);
	97	}
	98
	99	event = dupprintf("%s session log (%s mode) to file: %s",
	100	(mode == 0 ? "Disabled writing" :
	101	mode == 1 ? "Appending" : "Writing new"),
	102	(ctx->cfg.logtype == LGTYP_ASCII ? "ASCII" :
	103	ctx->cfg.logtype == LGTYP_DEBUG ? "raw" :
	104	ctx->cfg.logtype == LGTYP_PACKETS ? "SSH packets" :
	105	"unknown"),
	106	filename_to_str(&ctx->currlogfilename));
	107	logevent(ctx->frontend, event);
	108	sfree(event);
	109
	110	/*
	111	* Having either succeeded or failed in opening the log file,
	112	* we should write any queued data out.
	113	*/
	114	assert(ctx->state != OPENING); /* make _sure_ it won't be requeued */
	115	while (bufchain_size(&ctx->queue)) {
	116	void *data;
	117	int len;
	118	bufchain_prefix(&ctx->queue, &data, &len);
	119	logwrite(ctx, data, len);
	120	bufchain_consume(&ctx->queue, len);
	121	}
	122	}
	123
	124	/*
	125	* Open the log file. Takes care of detecting an already-existing
	126	* file and asking the user whether they want to append, overwrite
	127	* or cancel logging.
	128	*/
	129	void logfopen(void *handle)
	130	{
	131	struct LogContext ctx = (struct LogContext )handle;
	132	struct tm tm;
	133	int mode;
	134
	135	/* Prevent repeat calls */
	136	if (ctx->state != CLOSED)
137	return;
138
139	if (!ctx->cfg.logtype)
140	return;
141
142	tm = ltime();
143
144	/* substitute special codes in file name */
145	xlatlognam(&ctx->currlogfilename, ctx->cfg.logfilename,ctx->cfg.host, &tm);
146
147	ctx->lgfp = f_open(ctx->currlogfilename, "r"); /* file already present? */
148	if (ctx->lgfp) {
149	fclose(ctx->lgfp);
150	if (ctx->cfg.logxfovr != LGXF_ASK) {
151	mode = ((ctx->cfg.logxfovr == LGXF_OVR) ? 2 : 1);
152	} else
153	mode = askappend(ctx->frontend, ctx->currlogfilename,
154	logfopen_callback, ctx);
155	} else
156	mode = 2; /* create == overwrite */
157
158	if (mode < 0)
159	ctx->state = OPENING;
160	else
161	logfopen_callback(ctx, mode); /* open the file */
162	}
163
164	void logfclose(void *handle)
165	{
166	struct LogContext ctx = (struct LogContext )handle;
167	if (ctx->lgfp) {
168	fclose(ctx->lgfp);
169	ctx->lgfp = NULL;
170	}
171	ctx->state = CLOSED;
172	}
173
174	/*
175	* Log session traffic.
176	*/
177	void logtraffic(void *handle, unsigned char c, int logmode)
178	{
179	struct LogContext ctx = (struct LogContext )handle;
180	if (ctx->cfg.logtype > 0) {
181	if (ctx->cfg.logtype == logmode)
182	logwrite(ctx, &c, 1);
183	}
184	}
185
11cc5e30	186	/*
382908ad	187	* Log an Event Log entry. Used in SSH packet logging mode; this is
	188	* also as convenient a place as any to put the output of Event Log
	189	* entries to stderr when a command-line tool is in verbose mode.
	190	* (In particular, this is a better place to put it than in the
	191	* front ends, because it only has to be done once for all
	192	* platforms. Platforms which don't have a meaningful stderr can
	193	* just avoid defining FLAG_STDERR.
fb89f7ff	194	*/
cbe2d68f	195	void log_eventlog(void handle, const char event)
fb89f7ff	196	{
a8327734	197	struct LogContext ctx = (struct LogContext )handle;
382908ad	198	if ((flags & FLAG_STDERR) && (flags & FLAG_VERBOSE)) {
	199	fprintf(stderr, "%s\n", event);
	200	fflush(stderr);
	201	}
c229ef97	202	if (ctx->cfg.logtype != LGTYP_PACKETS)
fb89f7ff	203	return;
919baedb	204	logprintf(ctx, "Event Log: %s\r\n", event);
fb89f7ff	205	}
	206
	207	/*
00db133f	208	* Log an SSH packet.
9a10ecf4	209	* If n_blanks != 0, blank or omit some parts.
9a10ecf4	210	* Set of blanking areas must be in increasing order.
00db133f	211	*/
a8327734	212	void log_packet(void *handle, int direction, int type,
9a10ecf4	213	char texttype, void data, int len,
9a10ecf4	214	int n_blanks, const struct logblank_t *blanks)
00db133f	215	{
a8327734	216	struct LogContext ctx = (struct LogContext )handle;
00db133f	217	char dumpdata[80], smalldata[5];
919baedb	218	int p = 0, b = 0, omitted = 0;
919baedb	219	int output_pos = 0; /* NZ if pending output in dumpdata */
00db133f	220
c229ef97	221	if (ctx->cfg.logtype != LGTYP_PACKETS)
00db133f	222	return;
9a10ecf4	223
919baedb	224	/* Packet header. */
	225	logprintf(ctx, "%s packet type %d / 0x%02x (%s)\r\n",
	226	direction == PKT_INCOMING ? "Incoming" : "Outgoing",
	227	type, type, texttype);
	228
	229	/*
	230	* Output a hex/ASCII dump of the packet body, blanking/omitting
	231	* parts as specified.
	232	*/
	233	while (p < len) {
	234	int blktype;
	235
	236	/* Move to a current entry in the blanking array. */
	237	while ((b < n_blanks) &&
	238	(p >= blanks[b].offset + blanks[b].len))
	239	b++;
	240	/* Work out what type of blanking to apply to
	241	* this byte. */
	242	blktype = PKTLOG_EMIT; /* default */
	243	if ((b < n_blanks) &&
	244	(p >= blanks[b].offset) &&
	245	(p < blanks[b].offset + blanks[b].len))
	246	blktype = blanks[b].type;
	247
	248	/* If we're about to stop omitting, it's time to say how
	249	* much we omitted. */
	250	if ((blktype != PKTLOG_OMIT) && omitted) {
	251	logprintf(ctx, " (%d byte%s omitted)\r\n",
	252	omitted, (omitted==1?"":"s"));
	253	omitted = 0;
	254	}
9a10ecf4	255
919baedb	256	/* (Re-)initialise dumpdata as necessary
	257	* (start of row, or if we've just stopped omitting) */
	258	if (!output_pos && !omitted)
	259	sprintf(dumpdata, " %08x%s\r\n", p-(p%16), 1+316+2+16, "");
	260
	261	/* Deal with the current byte. */
	262	if (blktype == PKTLOG_OMIT) {
	263	omitted++;
	264	} else {
	265	int c;
	266	if (blktype == PKTLOG_BLANK) {
	267	c = 'X';
	268	sprintf(smalldata, "XX");
	269	} else { /* PKTLOG_EMIT */
	270	c = ((unsigned char *)data)[p];
	271	sprintf(smalldata, "%02x", c);
00db133f	272	}
919baedb	273	dumpdata[10+2+3*(p%16)] = smalldata[0];
	274	dumpdata[10+2+3*(p%16)+1] = smalldata[1];
	275	dumpdata[10+1+3*16+2+(p%16)] = (isprint(c) ? c : '.');
	276	output_pos = (p%16) + 1;
00db133f	277	}
9a10ecf4	278
919baedb	279	p++;
00db133f	280
919baedb	281	/* Flush row if necessary */
	282	if (((p % 16) == 0) \|\| (p == len) \|\| omitted) {
	283	if (output_pos) {
	284	strcpy(dumpdata + 10+1+3*16+2+output_pos, "\r\n");
	285	logwrite(ctx, dumpdata, strlen(dumpdata));
	286	output_pos = 0;
	287	}
00db133f	288	}
00db133f	289
00db133f	290	}
00db133f	291
919baedb	292	/* Tidy up */
	293	if (omitted)
	294	logprintf(ctx, " (%d byte%s omitted)\r\n",
	295	omitted, (omitted==1?"":"s"));
	296	logflush(ctx);
00db133f	297	}
00db133f	298
c229ef97	299	void log_init(void frontend, Config *cfg)
a8327734	300	{
3d88e64d	301	struct LogContext *ctx = snew(struct LogContext);
a8327734	302	ctx->lgfp = NULL;
919baedb	303	ctx->state = CLOSED;
a8327734	304	ctx->frontend = frontend;
c229ef97	305	ctx->cfg = cfg; / STRUCTURE COPY */
919baedb	306	bufchain_init(&ctx->queue);
a8327734	307	return ctx;
	308	}
	309
fabd1805	310	void log_free(void *handle)
	311	{
	312	struct LogContext ctx = (struct LogContext )handle;
	313
	314	logfclose(ctx);
919baedb	315	bufchain_clear(&ctx->queue);
fabd1805	316	sfree(ctx);
	317	}
	318
c229ef97	319	void log_reconfig(void handle, Config cfg)
	320	{
	321	struct LogContext ctx = (struct LogContext )handle;
	322	int reset_logging;
	323
9a30e26b	324	if (!filename_equal(ctx->cfg.logfilename, cfg->logfilename) \|\|
c229ef97	325	ctx->cfg.logtype != cfg->logtype)
	326	reset_logging = TRUE;
	327	else
	328	reset_logging = FALSE;
	329
	330	if (reset_logging)
4512d432	331	logfclose(ctx);
c229ef97	332
	333	ctx->cfg = cfg; / STRUCTURE COPY */
	334
	335	if (reset_logging)
4512d432	336	logfopen(ctx);
c229ef97	337	}
c229ef97	338
00db133f	339	/*
	340	* translate format codes into time/date strings
	341	* and insert them into log file name
	342	*
	343	* "&Y":YYYY "&m":MM "&d":DD "&T":hhmm "&h":<hostname> "&&":&
	344	*/
9a30e26b	345	static void xlatlognam(Filename *dest, Filename src,
9a30e26b	346	char hostname, struct tm tm) {
00db133f	347	char buf[10], *bufp;
00db133f	348	int size;
9a30e26b	349	char buffer[FILENAME_MAX];
9a30e26b	350	int len = sizeof(buffer)-1;
9fab77dc	351	char *d;
9fab77dc	352	const char *s;
9a30e26b	353
9a30e26b	354	d = buffer;
9fab77dc	355	s = filename_to_str(&src);
00db133f	356
	357	while (*s) {
	358	/* Let (bufp, len) be the string to append. */
	359	bufp = buf; /* don't usually override this */
	360	if (*s == '&') {
	361	char c;
	362	s++;
1709795f	363	size = 0;
00db133f	364	if (s) switch (c = s++, tolower(c)) {
	365	case 'y':
	366	size = strftime(buf, sizeof(buf), "%Y", tm);
	367	break;
	368	case 'm':
	369	size = strftime(buf, sizeof(buf), "%m", tm);
	370	break;
	371	case 'd':
	372	size = strftime(buf, sizeof(buf), "%d", tm);
	373	break;
	374	case 't':
	375	size = strftime(buf, sizeof(buf), "%H%M%S", tm);
	376	break;
	377	case 'h':
	378	bufp = hostname;
	379	size = strlen(bufp);
	380	break;
	381	default:
	382	buf[0] = '&';
	383	size = 1;
	384	if (c != '&')
	385	buf[size++] = c;
	386	}
	387	} else {
	388	buf[0] = *s++;
	389	size = 1;
	390	}
	391	if (size > len)
	392	size = len;
	393	memcpy(d, bufp, size);
	394	d += size;
	395	len -= size;
	396	}
	397	*d = '\0';
9a30e26b	398
0ac2edb3	399	*dest = filename_from_str(buffer);
00db133f	400	}