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etc.c
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/* $Id: etc.c,v 1.81 2007/05/23 15:06:05 inu Exp $ */
#include "fm.h"
#ifndef __MINGW32_VERSION
#include <pwd.h>
#endif
#include "myctype.h"
#include "html.h"
#include "local.h"
#include "hash.h"
#include <fcntl.h>
#include <sys/types.h>
#include <time.h>
#if defined(HAVE_WAITPID) || defined(HAVE_WAIT3)
#include <sys/wait.h>
#endif
#include <signal.h>
#ifdef __WATT32__
#define read(a,b,c) read_s(a,b,c)
#define close(x) close_s(x)
#endif /* __WATT32__ */
struct auth_pass {
int bad;
int is_proxy;
Str host;
int port;
/* Str file; */
Str realm;
Str uname;
Str pwd;
struct auth_pass *next;
};
struct auth_pass *passwords = NULL;
int
columnSkip(Buffer *buf, int offset)
{
int i, maxColumn;
int column = buf->currentColumn + offset;
int nlines = buf->LINES + 1;
Line *l;
maxColumn = 0;
for (i = 0, l = buf->topLine; i < nlines && l != NULL; i++, l = l->next) {
if (l->width < 0)
l->width = COLPOS(l, l->len);
if (l->width - 1 > maxColumn)
maxColumn = l->width - 1;
}
maxColumn -= buf->COLS - 1;
if (column < maxColumn)
maxColumn = column;
if (maxColumn < 0)
maxColumn = 0;
if (buf->currentColumn == maxColumn)
return 0;
buf->currentColumn = maxColumn;
return 1;
}
int
columnPos(Line *line, int column)
{
int i;
for (i = 1; i < line->len; i++) {
if (COLPOS(line, i) > column)
break;
}
#ifdef USE_M17N
for (i--; i > 0 && line->propBuf[i] & PC_WCHAR2; i--) ;
return i;
#else
return i - 1;
#endif
}
Line *
lineSkip(Buffer *buf, Line *line, int offset, int last)
{
int i;
Line *l;
l = currentLineSkip(buf, line, offset, last);
if (!nextpage_topline)
for (i = buf->LINES - 1 - (buf->lastLine->linenumber - l->linenumber);
i > 0 && l->prev != NULL; i--, l = l->prev) ;
return l;
}
Line *
currentLineSkip(Buffer *buf, Line *line, int offset, int last)
{
int i, n;
Line *l = line;
if (buf->pagerSource && !(buf->bufferprop & BP_CLOSE)) {
n = line->linenumber + offset + buf->LINES;
if (buf->lastLine->linenumber < n)
getNextPage(buf, n - buf->lastLine->linenumber);
while ((last || (buf->lastLine->linenumber < n)) &&
(getNextPage(buf, 1) != NULL)) ;
if (last)
l = buf->lastLine;
}
if (offset == 0)
return l;
if (offset > 0)
for (i = 0; i < offset && l->next != NULL; i++, l = l->next) ;
else
for (i = 0; i < -offset && l->prev != NULL; i++, l = l->prev) ;
return l;
}
#define MAX_CMD_LEN 128
int
gethtmlcmd(char **s)
{
extern Hash_si tagtable;
char cmdstr[MAX_CMD_LEN];
char *p = cmdstr;
char *save = *s;
int cmd;
(*s)++;
/* first character */
if (IS_ALNUM(**s) || **s == '_' || **s == '/') {
*(p++) = TOLOWER(**s);
(*s)++;
}
else
return HTML_UNKNOWN;
if (p[-1] == '/')
SKIP_BLANKS(*s);
while ((IS_ALNUM(**s) || **s == '_') && p - cmdstr < MAX_CMD_LEN) {
*(p++) = TOLOWER(**s);
(*s)++;
}
if (p - cmdstr == MAX_CMD_LEN) {
/* buffer overflow: perhaps caused by bad HTML source */
*s = save + 1;
return HTML_UNKNOWN;
}
*p = '\0';
/* hash search */
cmd = getHash_si(&tagtable, cmdstr, HTML_UNKNOWN);
while (**s && **s != '>')
(*s)++;
if (**s == '>')
(*s)++;
return cmd;
}
#ifdef USE_ANSI_COLOR
static int
parse_ansi_color(char **str, Lineprop *effect, Linecolor *color)
{
char *p = *str, *q;
Lineprop e = *effect;
Linecolor c = *color;
int i;
if (*p != ESC_CODE || *(p + 1) != '[')
return 0;
p += 2;
for (q = p; IS_DIGIT(*q) || *q == ';'; q++) ;
if (*q != 'm')
return 0;
*str = q + 1;
while (1) {
if (*p == 'm') {
e = PE_NORMAL;
c = 0;
break;
}
if (IS_DIGIT(*p)) {
q = p;
for (p++; IS_DIGIT(*p); p++) ;
i = atoi(allocStr(q, p - q));
switch (i) {
case 0:
e = PE_NORMAL;
c = 0;
break;
case 1:
case 5:
e = PE_BOLD;
break;
case 4:
e = PE_UNDER;
break;
case 7:
e = PE_STAND;
break;
case 100: /* for EWS4800 kterm */
c = 0;
break;
case 39:
c &= 0xf0;
break;
case 49:
c &= 0x0f;
break;
default:
if (i >= 30 && i <= 37)
c = (c & 0xf0) | (i - 30) | 0x08;
else if (i >= 40 && i <= 47)
c = (c & 0x0f) | ((i - 40) << 4) | 0x80;
break;
}
if (*p == 'm')
break;
}
else {
e = PE_NORMAL;
c = 0;
break;
}
p++; /* *p == ';' */
}
*effect = e;
*color = c;
return 1;
}
#endif
/*
* Check character type
*/
Str
checkType(Str s, Lineprop **oprop, Linecolor **ocolor)
{
Lineprop mode;
Lineprop effect = PE_NORMAL;
Lineprop *prop;
static Lineprop *prop_buffer = NULL;
static int prop_size = 0;
char *str = s->ptr, *endp = &s->ptr[s->length], *bs = NULL;
#ifdef USE_ANSI_COLOR
Lineprop ceffect = PE_NORMAL;
Linecolor cmode = 0;
int check_color = FALSE;
Linecolor *color = NULL;
static Linecolor *color_buffer = NULL;
static int color_size = 0;
char *es = NULL;
#endif
int do_copy = FALSE;
#ifdef USE_M17N
int i;
int plen = 0, clen;
int *plens = NULL;
static int *plens_buffer = NULL;
static int plens_size = 0;
#endif
if (prop_size < s->length) {
prop_size = (s->length > LINELEN) ? s->length : LINELEN;
prop_buffer = New_Reuse(Lineprop, prop_buffer, prop_size);
}
prop = prop_buffer;
#ifdef USE_M17N
if (plens_size < s->length) {
plens_size = (s->length > LINELEN) ? s->length : LINELEN;
plens_buffer = New_Reuse(int, plens_buffer, plens_size);
}
plens = plens_buffer;
#endif
if (ShowEffect) {
bs = memchr(str, '\b', s->length);
#ifdef USE_ANSI_COLOR
if (ocolor) {
es = memchr(str, ESC_CODE, s->length);
if (es) {
if (color_size < s->length) {
color_size = (s->length > LINELEN) ? s->length : LINELEN;
color_buffer = New_Reuse(Linecolor, color_buffer,
color_size);
}
color = color_buffer;
}
}
#endif
if ((bs != NULL)
#ifdef USE_ANSI_COLOR
|| (es != NULL)
#endif
) {
char *sp = str, *ep;
s = Strnew_size(s->length);
do_copy = TRUE;
ep = endp;
if (bs && ep > bs - 2)
ep = bs - 2;
#ifdef USE_ANSI_COLOR
if (es && ep > es - 2)
ep = es - 2;
#endif
for (; str < ep && IS_ASCII(*str); str++) {
*(prop++) = PE_NORMAL | (IS_CNTRL(*str) ? PC_CTRL : PC_ASCII);
#ifdef USE_ANSI_COLOR
if (color)
*(color++) = 0;
#endif
#ifdef USE_M17N
*(plens++) = plen = 1;
#endif
}
Strcat_charp_n(s, sp, (int)(str - sp));
}
}
if (!do_copy) {
for (; str < endp && IS_ASCII(*str); str++) {
*(prop++) = PE_NORMAL | (IS_CNTRL(*str) ? PC_CTRL : PC_ASCII);
#ifdef USE_ANSI_COLOR
if (color)
*(color++) = 0;
#endif
#ifdef USE_M17N
*(plens++) = plen = 1;
#endif
}
}
while (str < endp) {
if (prop - prop_buffer >= prop_size)
break;
if (bs != NULL) {
#ifdef USE_M17N
if (str == bs - 2 && !strncmp(str, "__\b\b", 4)) {
str += 4;
effect = PE_UNDER;
if (str < endp)
bs = memchr(str, '\b', endp - str);
continue;
}
else
#endif
if (str == bs - 1 && *str == '_') {
str += 2;
effect = PE_UNDER;
if (str < endp)
bs = memchr(str, '\b', endp - str);
continue;
}
else if (str == bs) {
if (*(str + 1) == '_') {
if (s->length) {
str += 2;
#ifdef USE_M17N
for (i = 1; i <= plen; i++)
*(prop - i) |= PE_UNDER;
#else
*(prop - 1) |= PE_UNDER;
#endif
}
else {
str++;
}
}
#ifdef USE_M17N
else if (!strncmp(str + 1, "\b__", 3)) {
if (s->length) {
str += (plen == 1) ? 3 : 4;
for (i = 1; i <= plen; i++)
*(prop - i) |= PE_UNDER;
}
else {
str += 2;
}
}
else if (*(str + 1) == '\b') {
if (s->length) {
clen = get_mclen(str + 2);
if (plen == clen &&
!strncmp(str - plen, str + 2, plen)) {
for (i = 1; i <= plen; i++)
*(prop - i) |= PE_BOLD;
str += 2 + clen;
}
else {
Strshrink(s, plen);
prop -= plen;
#ifdef USE_ANSI_COLOR
if (color)
color -= plen;
#endif
plen = *(--plens);
str += 2;
}
}
else {
str += 2;
}
}
#endif
else {
if (s->length) {
#ifdef USE_M17N
clen = get_mclen(str + 1);
if (plen == clen &&
!strncmp(str - plen, str + 1, plen)) {
for (i = 1; i <= plen; i++)
*(prop - i) |= PE_BOLD;
str += 1 + clen;
}
else {
Strshrink(s, plen);
prop -= plen;
#ifdef USE_ANSI_COLOR
if (color)
color -= plen;
#endif
plen = *(--plens);
str++;
}
#else
if (*(str - 1) == *(str + 1)) {
*(prop - 1) |= PE_BOLD;
str += 2;
}
else {
Strshrink(s, 1);
prop--;
#ifdef USE_ANSI_COLOR
if (color)
color--;
#endif
str++;
}
#endif
}
else {
str++;
}
}
if (str < endp)
bs = memchr(str, '\b', endp - str);
continue;
}
#ifdef USE_ANSI_COLOR
else if (str > bs)
bs = memchr(str, '\b', endp - str);
#endif
}
#ifdef USE_ANSI_COLOR
if (es != NULL) {
if (str == es) {
int ok = parse_ansi_color(&str, &ceffect, &cmode);
if (str < endp)
es = memchr(str, ESC_CODE, endp - str);
if (ok) {
if (cmode)
check_color = TRUE;
continue;
}
}
else if (str > es)
es = memchr(str, ESC_CODE, endp - str);
}
#endif
mode = get_mctype(str) | effect;
#ifdef USE_ANSI_COLOR
if (color) {
*(color++) = cmode;
mode |= ceffect;
}
#endif
*(prop++) = mode;
#ifdef USE_M17N
plen = get_mclen(str);
if (str + plen > endp)
plen = endp - str;
*(plens++) = plen;
if (plen > 1) {
mode = (mode & ~PC_WCHAR1) | PC_WCHAR2;
for (i = 1; i < plen; i++) {
*(prop++) = mode;
#ifdef USE_ANSI_COLOR
if (color)
*(color++) = cmode;
#endif
}
if (do_copy)
Strcat_charp_n(s, (char *)str, plen);
str += plen;
}
else
#endif
{
if (do_copy)
Strcat_char(s, (char)*str);
str++;
}
effect = PE_NORMAL;
}
*oprop = prop_buffer;
#ifdef USE_ANSI_COLOR
if (ocolor)
*ocolor = check_color ? color_buffer : NULL;
#endif
return s;
}
static int
nextColumn(int n, char *p, Lineprop *pr)
{
if (*pr & PC_CTRL) {
if (*p == '\t')
return (n + Tabstop) / Tabstop * Tabstop;
else if (*p == '\n')
return n + 1;
else if (*p != '\r')
return n + 2;
return n;
}
#ifdef USE_M17N
if (*pr & PC_UNKNOWN)
return n + 4;
return n + wtf_width((wc_uchar *) p);
#else
return n + 1;
#endif
}
int
calcPosition(char *l, Lineprop *pr, int len, int pos, int bpos, int mode)
{
static int *realColumn = NULL;
static int size = 0;
static char *prevl = NULL;
int i, j;
if (l == NULL || len == 0 || pos < 0)
return bpos;
if (l == prevl && mode == CP_AUTO) {
if (pos <= len)
return realColumn[pos];
}
if (size < len + 1) {
size = (len + 1 > LINELEN) ? (len + 1) : LINELEN;
realColumn = New_N(int, size);
}
prevl = l;
i = 0;
j = bpos;
#ifdef USE_M17N
if (pr[i] & PC_WCHAR2) {
for (; i < len && pr[i] & PC_WCHAR2; i++)
realColumn[i] = j;
if (i > 0 && pr[i - 1] & PC_KANJI && WcOption.use_wide)
j++;
}
#endif
while (1) {
realColumn[i] = j;
if (i == len)
break;
j = nextColumn(j, &l[i], &pr[i]);
i++;
#ifdef USE_M17N
for (; i < len && pr[i] & PC_WCHAR2; i++)
realColumn[i] = realColumn[i - 1];
#endif
}
if (pos >= i)
return j;
return realColumn[pos];
}
int
columnLen(Line *line, int column)
{
int i, j;
for (i = 0, j = 0; i < line->len;) {
j = nextColumn(j, &line->lineBuf[i], &line->propBuf[i]);
if (j > column)
return i;
i++;
#ifdef USE_M17N
while (i < line->len && line->propBuf[i] & PC_WCHAR2)
i++;
#endif
}
return line->len;
}
char *
lastFileName(char *path)
{
char *p, *q;
p = q = path;
while (*p != '\0') {
if (*p == '/')
q = p + 1;
p++;
}
return allocStr(q, -1);
}
#ifdef USE_INCLUDED_SRAND48
static unsigned long R1 = 0x1234abcd;
static unsigned long R2 = 0x330e;
#define A1 0x5deec
#define A2 0xe66d
#define C 0xb
void
srand48(long seed)
{
R1 = (unsigned long)seed;
R2 = 0x330e;
}
long
lrand48(void)
{
R1 = (A1 * R1 << 16) + A1 * R2 + A2 * R1 + ((A2 * R2 + C) >> 16);
R2 = (A2 * R2 + C) & 0xffff;
return (long)(R1 >> 1);
}
#endif
char *
mybasename(char *s)
{
char *p = s;
while (*p)
p++;
while (s <= p && *p != '/')
p--;
if (*p == '/')
p++;
else
p = s;
return allocStr(p, -1);
}
char *
mydirname(char *s)
{
char *p = s;
while (*p)
p++;
if (s != p)
p--;
while (s != p && *p == '/')
p--;
while (s != p && *p != '/')
p--;
if (*p != '/')
return ".";
while (s != p && *p == '/')
p--;
return allocStr(s, strlen(s) - strlen(p) + 1);
}
#ifndef HAVE_STRERROR
char *
strerror(int errno)
{
extern char *sys_errlist[];
return sys_errlist[errno];
}
#endif /* not HAVE_STRERROR */
int
next_status(char c, int *status)
{
switch (*status) {
case R_ST_NORMAL:
if (c == '<') {
*status = R_ST_TAG0;
return 0;
}
else if (c == '&') {
*status = R_ST_AMP;
return 1;
}
else
return 1;
break;
case R_ST_TAG0:
if (c == '!') {
*status = R_ST_CMNT1;
return 0;
}
*status = R_ST_TAG;
/* continues to next case */
case R_ST_TAG:
if (c == '>')
*status = R_ST_NORMAL;
else if (c == '=')
*status = R_ST_EQL;
return 0;
case R_ST_EQL:
if (c == '"')
*status = R_ST_DQUOTE;
else if (c == '\'')
*status = R_ST_QUOTE;
else if (IS_SPACE(c))
*status = R_ST_EQL;
else if (c == '>')
*status = R_ST_NORMAL;
else
*status = R_ST_VALUE;
return 0;
case R_ST_QUOTE:
if (c == '\'')
*status = R_ST_TAG;
return 0;
case R_ST_DQUOTE:
if (c == '"')
*status = R_ST_TAG;
return 0;
case R_ST_VALUE:
if (c == '>')
*status = R_ST_NORMAL;
else if (IS_SPACE(c))
*status = R_ST_TAG;
return 0;
case R_ST_AMP:
if (c == ';') {
*status = R_ST_NORMAL;
return 0;
}
else if (c != '#' && !IS_ALNUM(c) && c != '_') {
/* something's wrong! */
*status = R_ST_NORMAL;
return 0;
}
else
return 0;
case R_ST_CMNT1:
switch (c) {
case '-':
*status = R_ST_CMNT2;
break;
case '>':
*status = R_ST_NORMAL;
break;
case 'D':
case 'd':
/* could be a !doctype */
*status = R_ST_TAG;
break;
default:
*status = R_ST_IRRTAG;
}
return 0;
case R_ST_CMNT2:
switch (c) {
case '-':
*status = R_ST_CMNT;
break;
case '>':
*status = R_ST_NORMAL;
break;
default:
*status = R_ST_IRRTAG;
}
return 0;
case R_ST_CMNT:
if (c == '-')
*status = R_ST_NCMNT1;
return 0;
case R_ST_NCMNT1:
if (c == '-')
*status = R_ST_NCMNT2;
else
*status = R_ST_CMNT;
return 0;
case R_ST_NCMNT2:
switch (c) {
case '>':
*status = R_ST_NORMAL;
break;
case '-':
*status = R_ST_NCMNT2;
break;
default:
if (IS_SPACE(c))
*status = R_ST_NCMNT3;
else
*status = R_ST_CMNT;
break;
}
break;
case R_ST_NCMNT3:
switch (c) {
case '>':
*status = R_ST_NORMAL;
break;
case '-':
*status = R_ST_NCMNT1;
break;
default:
if (IS_SPACE(c))
*status = R_ST_NCMNT3;
else
*status = R_ST_CMNT;
break;
}
return 0;
case R_ST_IRRTAG:
if (c == '>')
*status = R_ST_NORMAL;
return 0;
}
/* notreached */
return 0;
}
int
read_token(Str buf, char **instr, int *status, int pre, int append)
{
char *p;
int prev_status;
if (!append)
Strclear(buf);
if (**instr == '\0')
return 0;
for (p = *instr; *p; p++) {
/* Drop Unicode soft hyphen */
if (*(unsigned char *)p == 0210
&& *(unsigned char *)(p + 1) == 0200
&& *(unsigned char *)(p + 2) == 0201
&& *(unsigned char *)(p + 3) == 0255) {
p += 3;
continue;
}
prev_status = *status;
next_status(*p, status);
switch (*status) {
case R_ST_NORMAL:
if (prev_status == R_ST_AMP && *p != ';') {
p--;
break;
}
if (prev_status == R_ST_NCMNT2 || prev_status == R_ST_NCMNT3 ||
prev_status == R_ST_IRRTAG || prev_status == R_ST_CMNT1) {
if (prev_status == R_ST_CMNT1 && !append && !pre)
Strclear(buf);
if (pre)
Strcat_char(buf, *p);
p++;
goto proc_end;
}
Strcat_char(buf, (!pre && IS_SPACE(*p)) ? ' ' : *p);
if (ST_IS_REAL_TAG(prev_status)) {
*instr = p + 1;
if (buf->length < 2 ||
buf->ptr[buf->length - 2] != '<' ||
buf->ptr[buf->length - 1] != '>')
return 1;
Strshrink(buf, 2);
}
break;
case R_ST_TAG0:
case R_ST_TAG:
if (prev_status == R_ST_NORMAL && p != *instr) {
*instr = p;
*status = prev_status;
return 1;
}
if (*status == R_ST_TAG0 && !REALLY_THE_BEGINNING_OF_A_TAG(p)) {
/* it seems that this '<' is not a beginning of a tag */
/*
* Strcat_charp(buf, "<");
*/
Strcat_char(buf, '<');
*status = R_ST_NORMAL;
}
else
Strcat_char(buf, *p);
break;
case R_ST_EQL:
case R_ST_QUOTE:
case R_ST_DQUOTE:
case R_ST_VALUE:
case R_ST_AMP:
Strcat_char(buf, *p);
break;
case R_ST_CMNT:
case R_ST_IRRTAG:
if (pre)
Strcat_char(buf, *p);
else if (!append)
Strclear(buf);
break;
case R_ST_CMNT1:
case R_ST_CMNT2:
case R_ST_NCMNT1:
case R_ST_NCMNT2:
case R_ST_NCMNT3:
/* do nothing */
if (pre)
Strcat_char(buf, *p);
break;
}
}
proc_end:
*instr = p;
return 1;
}
Str
correct_irrtag(int status)
{
char c;
Str tmp = Strnew();
while (status != R_ST_NORMAL) {
switch (status) {
case R_ST_CMNT: /* required "-->" */
case R_ST_NCMNT1: /* required "->" */
c = '-';
break;
case R_ST_NCMNT2:
case R_ST_NCMNT3:
case R_ST_IRRTAG:
case R_ST_CMNT1:
case R_ST_CMNT2:
case R_ST_TAG:
case R_ST_TAG0:
case R_ST_EQL: /* required ">" */
case R_ST_VALUE:
c = '>';
break;
case R_ST_QUOTE:
c = '\'';
break;
case R_ST_DQUOTE:
c = '"';
break;
case R_ST_AMP:
c = ';';
break;
default:
return tmp;
}
next_status(c, &status);
Strcat_char(tmp, c);
}
return tmp;
}
/*
* RFC2617: 1.2 Access Authentication Framework
*
* The realm value (case-sensitive), in combination with the canonical root
* URL (the absoluteURI for the server whose abs_path is empty; see section
* 5.1.2 of RFC2616 ) of the server being accessed, defines the protection
* space. These realms allow the protected resources on a server to be
* partitioned into a set of protection spaces, each with its own
* authentication scheme and/or authorization database.
*
*/
static void
add_auth_pass_entry(const struct auth_pass *ent, int netrc, int override)
{
if ((ent->host || netrc) /* netrc accept default (host == NULL) */
&&(ent->is_proxy || ent->realm || netrc)
&& ent->uname && ent->pwd) {
struct auth_pass *newent = New(struct auth_pass);
memcpy(newent, ent, sizeof(struct auth_pass));
if (override) {
newent->next = passwords;
passwords = newent;
}
else {
if (passwords == NULL)
passwords = newent;
else if (passwords->next == NULL)
passwords->next = newent;
else {
struct auth_pass *ep = passwords;
for (; ep->next; ep = ep->next) ;
ep->next = newent;
}
}
}
/* ignore invalid entries */
}
static struct auth_pass *