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/* $OpenBSD: log.c,v 1.12 2021/03/02 13:06:50 lum Exp $ */
/*
* This file is in the public domain.
*
* Author: Mark Lumsden <mark@showcomplex.com>
*
*/
/*
* Record a history of an mg session for temporal debugging.
* Sometimes pressing a key will set the scene for a bug only visible
* dozens of keystrokes later. gdb has its limitations in this scenario.
*
* Note this file is not compiled into mg by default, you will need to
* amend the 'Makefile' for that to happen. Because of this, the code
* is subject to bit-rot. However, I know myself and others have
* written similar functionally often enough, that recording the below
* in a code repository could aid the developement efforts of mg, even
* if it requires a bit of effort to get working. The current code is
* written in the spirit of debugging (quickly and perhaps not ideal,
* but it does what is required well enough). Should debugging become
* more formalised within mg, then I would expect that to change.
*
* If you open a file with long lines to run through this debugging
* code, you may run into problems with the 1st fprintf statement in
* in the mglog_lines() function. mg sometimes segvs at a strlen call
* in fprintf - possibly something to do with the format string?
* "%s%p b^%p f.%p %d %d\t%c|%s\n"
* When I get time I will look into it. But since my debugging
* generally revolves around a file like:
*
* abc
* def
* ghk
*
* I don't experience this bug. Just note it for future investigation.
*/
#include <sys/queue.h>
#include <sys/stat.h>
#include <ctype.h>
#include <fcntl.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <stdarg.h>
#include "def.h"
#include "key.h"
#include "kbd.h"
#include "funmap.h"
#include "chrdef.h"
#include "log.h"
static char *mglogfiles_create(FILE **, char *);
static int mglog_lines(PF);
static int mglog_undo(void);
static int mglog_window(void);
static int mglog_key(KEYMAP *map);
const char *mglogdir;
const char *mglogpath_lines;
const char *mglogpath_undo;
const char *mglogpath_window;
const char *mglogpath_key;
const char *mglogpath_interpreter;
const char *mglogpath_misc;
int mgloglevel;
FILE *fd_lines;
FILE *fd_undo;
FILE *fd_window;
FILE *fd_key;
FILE *fd_interpreter;
FILE *fd_misc;
int
mglog(PF funct, void *map)
{
if(!mglog_lines(funct))
ewprintf("Problem logging lines");
if(!mglog_undo())
ewprintf("Problem logging undo");
if(!mglog_window())
ewprintf("Problem logging window");
if(!mglog_key(map))
ewprintf("Problem logging key");
return (TRUE);
}
static int
mglog_key(KEYMAP *map)
{
PF *pfp;
if (ISWORD(*key.k_chars)) {
fprintf(fd_key, "k_count:%d k_chars:%hd\tchr:%c\t", key.k_count,
*key.k_chars, CHARMASK(*key.k_chars));
} else {
fprintf(fd_key, "k_count:%d k_chars:%hd\t\t", key.k_count,
*key.k_chars);
}
fprintf(fd_key, "map:%p %d %d %p %hd %hd\n",
map,
map->map_num,
map->map_max,
map->map_default,
map->map_element->k_base,
map->map_element->k_num
);
for (pfp = map->map_element->k_funcp; *pfp != NULL; pfp++)
fprintf(fd_key, "%s ", function_name(*pfp));
fprintf(fd_key, "\n\n");
fflush(fd_key);
return (TRUE);
}
static int
mglog_window(void)
{
struct mgwin *wp;
int i;
for (wp = wheadp, i = 0; wp != NULL; wp = wp->w_wndp, ++i) {
fprintf(fd_window,
"%d wh%p wlst%p wbfp%p wlp%p wdtp%p wmkp%p wdto%d wmko%d" \
" wtpr%d wntr%d wfrm%d wrfl%c wflg%c wwrl%p wdtl%d" \
" wmkl%d\n",
i,
wp,
&wp->w_list,
wp->w_bufp,
wp->w_linep,
wp->w_dotp,
wp->w_markp,
wp->w_doto,
wp->w_marko,
wp->w_toprow,
wp->w_ntrows,
wp->w_frame,
wp->w_rflag,
wp->w_flag,
wp->w_wrapline,
wp->w_dotline,
wp->w_markline
);
}
fflush(fd_window);
return (TRUE);
}
static int
mglog_undo(void)
{
struct undo_rec *rec;
char buf[4096], tmp[1024];
int num;
char *jptr;
jptr = "^J"; /* :) */
/*
* From undo_dump()
*/
num = 0;
TAILQ_FOREACH(rec, &curbp->b_undo, next) {
num++;
fprintf(fd_undo, "%d:\t %s at %d ", num,
(rec->type == DELETE) ? "DELETE":
(rec->type == DELREG) ? "DELREGION":
(rec->type == INSERT) ? "INSERT":
(rec->type == BOUNDARY) ? "----" :
(rec->type == MODIFIED) ? "MODIFIED": "UNKNOWN",
rec->pos
);
if (rec->content) {
(void)strlcat(buf, "\"", sizeof(buf));
snprintf(tmp, sizeof(tmp), "%.*s",
*rec->content == '\n' ? 2 : rec->region.r_size,
*rec->content == '\n' ? jptr : rec->content);
(void)strlcat(buf, tmp, sizeof(buf));
(void)strlcat(buf, "\"", sizeof(buf));
}
snprintf(tmp, sizeof(tmp), " [%d]", rec->region.r_size);
if (strlcat(buf, tmp, sizeof(buf)) >= sizeof(buf)) {
dobeep();
ewprintf("Undo record too large. Aborted.");
return (FALSE);
}
fprintf(fd_undo, "%s\n", buf);
tmp[0] = buf[0] = '\0';
}
fprintf(fd_undo, "\t [end-of-undo]\n\n");
fflush(fd_undo);
return (TRUE);
}
static int
mglog_lines(PF funct)
{
struct line *lp;
char *curline, *tmp, o;
int i;
i = 0;
fprintf(fd_lines, "%s\n", function_name(funct));
lp = bfirstlp(curbp);
for(;;) {
i++;
curline = " ";
o = ' ';
if (i == curwp->w_dotline) {
curline = ">";
if (lp->l_used > 0 && curwp->w_doto < lp->l_used)
o = lp->l_text[curwp->w_doto];
else
o = '-';
}
if (lp->l_size == 0)
tmp = " ";
else
tmp = lp->l_text;
/* segv on fprintf below with long lines */
fprintf(fd_lines, "%s%p b^%p f.%p %d %d\t%c|%s\n", curline,
lp, lp->l_bp, lp->l_fp,
lp->l_size, lp->l_used, o, tmp);
lp = lforw(lp);
if (lp == curbp->b_headp) {
fprintf(fd_lines, " %p b^%p f.%p [bhead]\n(EOB)\n",
lp, lp->l_bp, lp->l_fp);
fprintf(fd_lines, "lines:raw:%d buf:%d wdot:%d\n\n",
i, curbp->b_lines, curwp->w_dotline);
break;
}
}
fflush(fd_lines);
return (TRUE);
}
/*
* See what the eval variable code is up to.
*/
int
mglog_isvar(
const char* const argbuf,
const char* const argp,
const int sizof
)
{
fprintf(fd_interpreter, " argbuf:%s,argp:%s,sizof:%d<\n",
argbuf,
argp,
sizof);
fflush(fd_interpreter);
return (TRUE);
}
/*
* See what the eval line code is up to.
*/
int
mglog_execbuf(
const char* const pre,
const char* const excbuf,
const char* const argbuf,
const char* const argp,
const int last,
const int inlist,
const char* const cmdp,
const char* const p,
const char* const contbuf
)
{
fprintf(fd_interpreter, "%sexcbuf:%s,argbuf:%s,argp:%s,last:%d,inlist:%d,"\
"cmdp:%s,p:%s,contbuf:%s<\n",
pre,
excbuf,
argbuf,
argp,
last,
inlist,
cmdp,
p,
contbuf
);
fflush(fd_interpreter);
return (TRUE);
}
/*
* Misc. logging for various subsystems
*/
int
mglog_misc(
const char *fmt,
...
)
{
va_list ap;
int rc;
va_start(ap, fmt);
rc = vfprintf(fd_misc, fmt, ap);
va_end(ap);
fflush(fd_misc);
if (rc < 0)
return (FALSE);
return (TRUE);
}
/*
* Make sure logging to log files can happen.
*/
int
mgloginit(void)
{
struct stat sb;
mode_t dir_mode, f_mode, oumask;
char *mglogfile_lines, *mglogfile_undo, *mglogfile_window;
char *mglogfile_key, *mglogfile_interpreter, *mglogfile_misc;
mglogdir = "./log/";
mglogfile_lines = "line.log";
mglogfile_undo = "undo.log";
mglogfile_window = "window.log";
mglogfile_key = "key.log";
mglogfile_interpreter = "interpreter.log";
mglogfile_misc = "misc.log";
/*
* Change mgloglevel for desired level of logging.
* log.h has relevant level info.
*/
mgloglevel = 1;
oumask = umask(0);
f_mode = 0777& ~oumask;
dir_mode = f_mode | S_IWUSR | S_IXUSR;
if(stat(mglogdir, &sb)) {
if (mkdir(mglogdir, dir_mode) != 0)
return (FALSE);
if (chmod(mglogdir, f_mode) == -1)
return (FALSE);
}
mglogpath_lines = mglogfiles_create(&fd_lines, mglogfile_lines);
if (mglogpath_lines == NULL)
return (FALSE);
mglogpath_undo = mglogfiles_create(&fd_undo, mglogfile_undo);
if (mglogpath_undo == NULL)
return (FALSE);
mglogpath_window = mglogfiles_create(&fd_window, mglogfile_window);
if (mglogpath_window == NULL)
return (FALSE);
mglogpath_key = mglogfiles_create(&fd_key, mglogfile_key);
if (mglogpath_key == NULL)
return (FALSE);
mglogpath_interpreter = mglogfiles_create(&fd_interpreter,
mglogfile_interpreter);
if (mglogpath_interpreter == NULL)
return (FALSE);
mglogpath_misc = mglogfiles_create(&fd_misc, mglogfile_misc);
if (mglogpath_misc == NULL)
return (FALSE);
return (TRUE);
}
static char *
mglogfiles_create(FILE ** fd, char *mglogfile)
{
char tmp[NFILEN], *tmp2;
if (strlcpy(tmp, mglogdir, sizeof(tmp)) >
sizeof(tmp))
return (NULL);
if (strlcat(tmp, mglogfile, sizeof(tmp)) >
sizeof(tmp))
return (NULL);
if ((tmp2 = strndup(tmp, NFILEN)) == NULL)
return (NULL);
if ((*fd = fopen(tmp2, "w")) == NULL)
return (NULL);
return (tmp2);
}