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f3491c12c8e9ada389999c1c4cba0c12262f3b5c
w3m/etc.c
Fumitoshi UKAI aae61245cf [w3m-dev 02879] reset signals 
* etc.c (reset_signals): added
* etc.c (mySystem): use reset_signals()
* file.c (uncompress_stream): use reset_signals()
* proto.h (reset_signals): added
* search.c (init_migemo): kill by SIGKILL
* search.c (open_migemo): use reset_signals()
From: Hironori Sakamoto <hsaka@mth.biglobe.ne.jp>
2002-01-21 17:57:27 +00:00

1527 lines
28 KiB
C
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/* $Id: etc.c,v 1.17 2002/01/21 17:57:27 ukai Exp $ */
#include "fm.h"
#include <pwd.h>
#include "myctype.h"
#include "html.h"
#include "local.h"
#include "hash.h"
#include "terms.h"
#ifdef HAVE_GETCWD /* ??? ukai */
#include <unistd.h>
#include <sys/param.h>
#endif /* HAVE_GETCWD */
#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__ */
#ifndef HAVE_STRCHR
char *
strchr(char *s, char c)
{
while (*s) {
if (*s == c)
return s;
s++;
}
return NULL;
}
#endif /* not HAVE_STRCHR */
#ifndef HAVE_STRCASECMP
int
strcasecmp(char *s1, char *s2)
{
int x;
while (*s1) {
x = tolower(*s1) - tolower(*s2);
if (x != 0)
break;
s1++;
s2++;
}
if (x != 0)
return x;
return -tolower(*s2);
}
int
strncasecmp(char *s1, char *s2, int n)
{
int x;
while (*s1 && n) {
x = tolower(*s1) - tolower(*s2);
if (x != 0)
break;
s1++;
s2++;
n--;
}
if (x != 0)
return x;
return 0;
}
#endif /* not HAVE_STRCASECMP */
int
columnSkip(Buffer *buf, int offset)
{
int i, maxColumn;
int column = buf->currentColumn + offset;
int nlines = LASTLINE + 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) {
#ifdef JP_CHARSET
if (CharType(line->propBuf[i - 1]) == PC_KANJI2)
return i - 2;
#endif
return i - 1;
}
}
return i - 1;
}
Line *
lineSkip(Buffer *buf, Line *line, int offset, int last)
{
int i;
Line *l;
l = currentLineSkip(buf, line, offset, last);
#ifdef NEXTPAGE_TOPLINE
if (!nextpage_topline)
#endif
for (i = (LASTLINE - 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 + LASTLINE;
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)++));
else
return HTML_UNKNOWN;
if (p[-1] == '/')
SKIP_BLANKS(*s);
while ((IS_ALNUM(**s) || **s == '_') && p - cmdstr < MAX_CMD_LEN) {
*(p++) = tolower(*((*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,
#ifdef USE_ANSI_COLOR
Linecolor *ocolor, int *check_color,
#endif
int len)
{
Lineprop mode;
Lineprop effect = PE_NORMAL;
Lineprop *prop = oprop;
char *str = s->ptr, *endp = &s->ptr[s->length], *bs = NULL;
#ifdef USE_ANSI_COLOR
Lineprop ceffect = PE_NORMAL;
Linecolor cmode = 0;
Linecolor *color = NULL;
char *es = NULL;
#endif
int do_copy = FALSE;
int size = (len < s->length) ? len : s->length;
#ifdef USE_ANSI_COLOR
if (check_color)
*check_color = FALSE;
#endif
if (ShowEffect) {
bs = memchr(str, '\b', s->length);
#ifdef USE_ANSI_COLOR
if (ocolor) {
es = memchr(str, ESC_CODE, s->length);
if (es)
color = ocolor;
}
#endif
if (s->length > size || (bs != NULL)
#ifdef USE_ANSI_COLOR
|| (es != NULL)
#endif
) {
s = Strnew_size(size);
do_copy = TRUE;
}
}
while (str < endp) {
if (prop - oprop >= len)
break;
if (bs != NULL) {
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 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) == '_') {
#ifdef JP_CHARSET
if (s->length > 1 && CharType(*(prop - 2)) == PC_KANJI1) {
str += 2;
*(prop - 1) |= PE_UNDER;
*(prop - 2) |= PE_UNDER;
}
else
#endif /* JP_CHARSET */
if (s->length > 0) {
str += 2;
*(prop - 1) |= PE_UNDER;
}
else {
str++;
}
}
else if (!strncmp(str + 1, "\b__", 3)) {
#ifdef JP_CHARSET
if (s->length > 1 && CharType(*(prop - 2)) == PC_KANJI1) {
str += 4;
*(prop - 1) |= PE_UNDER;
*(prop - 2) |= PE_UNDER;
}
else
#endif /* JP_CHARSET */
if (s->length > 0) {
str += 3;
*(prop - 1) |= PE_UNDER;
}
else {
str += 2;
}
}
else if (*(str + 1) == '\b') {
#ifdef JP_CHARSET
if (s->length > 1 && CharType(*(prop - 2)) == PC_KANJI1) {
if (str + 4 <= endp && !strncmp(str - 2, str + 2, 2)) {
*(prop - 1) |= PE_BOLD;
*(prop - 2) |= PE_BOLD;
str += 4;
}
else {
Strshrink(s, 2);
prop -= 2;
str += 2;
}
}
else
#endif /* JP_CHARSET */
if (s->length > 0) {
if (str + 3 <= endp && *(str - 1) == *(str + 2)) {
*(prop - 1) |= PE_BOLD;
str += 3;
}
else {
Strshrink(s, 1);
prop--;
str += 2;
}
}
else {
str += 2;
}
}
else {
#ifdef JP_CHARSET
if (s->length > 1 && CharType(*(prop - 2)) == PC_KANJI1) {
if (str + 3 <= endp && !strncmp(str - 2, str + 1, 2)) {
*(prop - 1) |= PE_BOLD;
*(prop - 2) |= PE_BOLD;
str += 3;
}
else {
Strshrink(s, 2);
prop -= 2;
str++;
}
}
else
#endif /* JP_CHARSET */
if (s->length > 0) {
if (str + 2 <= endp && *(str - 1) == *(str + 1)) {
*(prop - 1) |= PE_BOLD;
str += 2;
}
else {
Strshrink(s, 1);
prop--;
str++;
}
}
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);
#ifdef USE_ANSI_COLOR
effect |= ceffect;
#endif
#ifdef JP_CHARSET
if (mode == PC_KANJI) {
prop[0] = (effect | PC_KANJI1);
prop[1] = (effect | PC_KANJI2);
if (do_copy) {
Strcat_char(s, str[0]);
Strcat_char(s, str[1]);
}
prop += 2;
str += 2;
#ifdef USE_ANSI_COLOR
if (color) {
color[0] = cmode;
color[1] = cmode;
color += 2;
}
#endif
}
else
#endif /* JP_CHARSET */
{
*prop = (effect | mode);
if (do_copy)
Strcat_char(s, *str);
prop++;
str++;
#ifdef USE_ANSI_COLOR
if (color) {
*color = cmode;
color++;
}
#endif
}
effect = PE_NORMAL;
}
return s;
}
int
calcPosition(char *l, Lineprop *pr, int len, int pos, int bpos, int mode)
{
static short realColumn[LINELEN + 1];
static char *prevl = NULL;
int i, j;
if (l == NULL || len == 0)
return bpos;
if (l == prevl && mode == CP_AUTO) {
if (pos <= len)
return realColumn[pos];
}
prevl = l;
j = bpos;
for (i = 0;; i++) {
realColumn[i] = j;
if (i == len)
break;
if (l[i] == '\t' && pr[i] == PC_CTRL)
j = (j + Tabstop) / Tabstop * Tabstop;
#ifndef KANJI_SYMBOLS
else if (pr[i] & PC_RULE)
j++;
#endif
else if (IS_UNPRINTABLE_ASCII(l[i], pr[i]))
j = j + 4;
else if (IS_UNPRINTABLE_CONTROL(l[i], pr[i]))
j = j + 2;
else
j++;
}
if (pos >= i)
return j;
return realColumn[pos];
}
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 */
#ifndef HAVE_SYS_ERRLIST
char **sys_errlist;
prepare_sys_errlist()
{
int i, n;
i = 1;
while (strerror(i) != NULL)
i++;
n = i;
sys_errlist = New_N(char *, n);
sys_errlist[0] = "";
for (i = 1; i < n; i++)
sys_errlist[i] = strerror(i);
}
#endif /* not HAVE_SYS_ERRLIST */
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_TAG;
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_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;
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++) {
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)
Strclear(buf);
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, "&lt;");
*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_AMP:
Strcat_char(buf, *p);
break;
case R_ST_CMNT:
case R_ST_IRRTAG:
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 */
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 ">" */
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;
}
/* authentication */
struct auth_cookie *
find_auth(char *host, int port, char *realm)
{
struct auth_cookie *p;
for (p = Auth_cookie; p != NULL; p = p->next) {
if (!Strcasecmp_charp(p->host, host) &&
p->port == port && !Strcasecmp_charp(p->realm, realm))
return p;
}
return NULL;
}
Str
find_auth_cookie(char *host, int port, char *realm)
{
struct auth_cookie *p = find_auth(host, port, realm);
if (p)
return p->cookie;
return NULL;
}
void
add_auth_cookie(char *host, int port, char *realm, Str cookie)
{
struct auth_cookie *p;
p = find_auth(host, port, realm);
if (p) {
p->cookie = cookie;
return;
}
p = New(struct auth_cookie);
p->host = Strnew_charp(host);
p->port = port;
p->realm = Strnew_charp(realm);
p->cookie = cookie;
p->next = Auth_cookie;
Auth_cookie = p;
}
/* get last modified time */
char *
last_modified(Buffer *buf)
{
TextListItem *ti;
struct stat st;
if (buf->document_header) {
for (ti = buf->document_header->first; ti; ti = ti->next) {
if (strncasecmp(ti->ptr, "Last-modified: ", 15) == 0) {
return ti->ptr + 15;
}
}
return "unknown";
}
else if (buf->currentURL.scheme == SCM_LOCAL) {
if (stat(buf->currentURL.file, &st) < 0)
return "unknown";
return ctime(&st.st_mtime);
}
return "unknown";
}
static char roman_num1[] = {
'i', 'x', 'c', 'm', '*',
};
static char roman_num5[] = {
'v', 'l', 'd', '*',
};
static Str
romanNum2(int l, int n)
{
Str s = Strnew();
switch (n) {
case 1:
case 2:
case 3:
for (; n > 0; n--)
Strcat_char(s, roman_num1[l]);
break;
case 4:
Strcat_char(s, roman_num1[l]);
Strcat_char(s, roman_num5[l]);
break;
case 5:
case 6:
case 7:
case 8:
Strcat_char(s, roman_num5[l]);
for (n -= 5; n > 0; n--)
Strcat_char(s, roman_num1[l]);
break;
case 9:
Strcat_char(s, roman_num1[l]);
Strcat_char(s, roman_num1[l + 1]);
break;
}
return s;
}
Str
romanNumeral(int n)
{
Str r = Strnew();
if (n <= 0)
return r;
if (n >= 4000) {
Strcat_charp(r, "**");
return r;
}
Strcat(r, romanNum2(3, n / 1000));
Strcat(r, romanNum2(2, (n % 1000) / 100));
Strcat(r, romanNum2(1, (n % 100) / 10));
Strcat(r, romanNum2(0, n % 10));
return r;
}
Str
romanAlphabet(int n)
{
Str r = Strnew();
int l;
char buf[14];
if (n <= 0)
return r;
l = 0;
while (n) {
buf[l++] = 'a' + (n - 1) % 26;
n = (n - 1) / 26;
}
l--;
for (; l >= 0; l--)
Strcat_char(r, buf[l]);
return r;
}
#ifndef SIGIOT
#define SIGIOT SIGABRT
#endif /* not SIGIOT */
void
reset_signals(void)
{
signal(SIGHUP, SIG_DFL); /* terminate process */
signal(SIGINT, SIG_DFL); /* terminate process */
signal(SIGQUIT, SIG_DFL); /* terminate process */
signal(SIGTERM, SIG_DFL); /* terminate process */
signal(SIGILL, SIG_DFL); /* create core image */
signal(SIGIOT, SIG_DFL); /* create core image */
signal(SIGFPE, SIG_DFL); /* create core image */
#ifdef SIGBUS
signal(SIGBUS, SIG_DFL); /* create core image */
#endif /* SIGBUS */
#ifdef SIGCHLD
signal(SIGCHLD, SIG_IGN);
#endif
#ifdef SIGPIPE
signal(SIGPIPE, SIG_IGN);
#endif
}
void
mySystem(char *command, int background)
{
if (background) {
#ifndef HAVE_SETPGRP
Str cmd = Strnew_charp("start /f ");
Strcat_charp(cmd, command);
system(cmd->ptr);
#else
int pid;
flush_tty();
if ((pid = fork()) == 0) {
reset_signals();
setpgrp();
close_tty();
fclose(stdout);
fclose(stderr);
execl("/bin/sh", "sh", "-c", command, NULL);
exit(127);
}
#endif
}
else
system(command);
}
Str
myExtCommand(char *cmd, char *arg, int redirect)
{
Str tmp = NULL;
char *p;
int set_arg = FALSE;
for (p = cmd; *p; p++) {
if (*p == '%' && *(p + 1) == 's' && !set_arg) {
if (tmp == NULL)
tmp = Strnew_charp_n(cmd, (int)(p - cmd));
Strcat_charp(tmp, arg);
set_arg = TRUE;
p++;
}
else {
if (tmp)
Strcat_char(tmp, *p);
}
}
if (!set_arg)
tmp = Strnew_m_charp(cmd, (redirect ? " < " : " "), arg, NULL);
return tmp;
}
Str
myEditor(char *cmd, char *file, int line)
{
Str tmp = NULL;
char *p;
int set_file = FALSE, set_line = FALSE;
for (p = cmd; *p; p++) {
if (*p == '%' && *(p + 1) == 's' && !set_file) {
if (tmp == NULL)
tmp = Strnew_charp_n(cmd, (int)(p - cmd));
Strcat_charp(tmp, file);
set_file = TRUE;
p++;
}
else if (*p == '%' && *(p + 1) == 'd' && !set_line && line > 0) {
if (tmp == NULL)
tmp = Strnew_charp_n(cmd, (int)(p - cmd));
Strcat(tmp, Sprintf("%d", line));
set_line = TRUE;
p++;
}
else {
if (tmp)
Strcat_char(tmp, *p);
}
}
if (!set_file) {
if (tmp == NULL)
tmp = Strnew_charp(cmd);
if (!set_line && line > 0 && strcasestr(cmd, "vi"))
Strcat(tmp, Sprintf(" +%d", line));
Strcat_m_charp(tmp, " ", file, NULL);
}
return tmp;
}
char *
expandName(char *name)
{
Str userName = NULL;
char *p;
struct passwd *passent, *getpwnam(const char *);
Str extpath = Strnew();
p = name;
if (*p == '/' && *(p + 1) == '~' && IS_ALPHA(*(p + 2))) {
if (personal_document_root != NULL) {
userName = Strnew();
p += 2;
while (IS_ALNUM(*p) || *p == '_' || *p == '-')
Strcat_char(userName, *(p++));
passent = getpwnam(userName->ptr);
if (passent == NULL) {
p = name;
goto rest;
}
Strcat_charp(extpath, passent->pw_dir);
Strcat_char(extpath, '/');
Strcat_charp(extpath, personal_document_root);
if (Strcmp_charp(extpath, "/") == 0 && *p == '/')
p++;
}
}
else
p = expandPath(p);
rest:
Strcat_charp(extpath, p);
return extpath->ptr;
}
char *
file_to_url(char *file)
{
Str tmp;
#ifdef SUPPORT_DOS_DRIVE_PREFIX
char *drive = NULL;
#endif
#ifdef SUPPORT_NETBIOS_SHARE
char *host = NULL;
#endif
file = expandName(file);
#ifdef SUPPORT_NETBIOS_SHARE
if (file[0] == '/' && file[1] == '/') {
char *p;
file += 2;
if (*file) {
p = strchr(file, '/');
if (p != NULL && p != file) {
host = allocStr(file, (p - file));
file = p;
}
}
}
#endif
#ifdef SUPPORT_DOS_DRIVE_PREFIX
if (IS_ALPHA(file[0]) && file[1] == ':') {
drive = allocStr(file, 2);
file += 2;
}
else
#endif
if (file[0] != '/') {
tmp = Strnew_charp(CurrentDir);
if (Strlastchar(tmp) != '/')
Strcat_char(tmp, '/');
Strcat_charp(tmp, file);
file = tmp->ptr;
}
tmp = Strnew_charp("file://");
#ifdef SUPPORT_NETBIOS_SHARE
if (host)
Strcat_charp(tmp, host);
#endif
#ifdef SUPPORT_DOS_DRIVE_PREFIX
if (drive)
Strcat_charp(tmp, drive);
#endif
Strcat_charp(tmp, file_quote(cleanupName(file)));
return tmp->ptr;
}
static char *tmpf_base[MAX_TMPF_TYPE] = {
"tmp", "src", "frame", "cache"
};
static unsigned int tmpf_seq[MAX_TMPF_TYPE];
Str
tmpfname(int type, char *ext)
{
Str tmpf;
tmpf = Sprintf("%s/w3m%s%d-%d%s",
rc_dir,
tmpf_base[type],
(int)getpid(), tmpf_seq[type]++, (ext) ? ext : "");
return tmpf;
}
#ifdef USE_COOKIE
static char *monthtbl[] = {
"Jan", "Feb", "Mar", "Apr", "May", "Jun",
"Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
};
static int
get_day(char **s)
{
Str tmp = Strnew();
int day;
char *ss = *s;
if (!**s)
return -1;
while (**s && IS_DIGIT(**s))
Strcat_char(tmp, *((*s)++));
day = atoi(tmp->ptr);
if (day < 1 || day > 31) {
*s = ss;
return -1;
}
return day;
}
static int
get_month(char **s)
{
Str tmp = Strnew();
int mon;
char *ss = *s;
if (!**s)
return -1;
while (**s && IS_DIGIT(**s))
Strcat_char(tmp, *((*s)++));
if (tmp->length > 0) {
mon = atoi(tmp->ptr);
}
else {
while (**s && IS_ALPHA(**s))
Strcat_char(tmp, *((*s)++));
for (mon = 1; mon <= 12; mon++) {
if (strncmp(tmp->ptr, monthtbl[mon - 1], 3) == 0)
break;
}
}
if (mon < 1 || mon > 12) {
*s = ss;
return -1;
}
return mon;
}
static int
get_year(char **s)
{
Str tmp = Strnew();
int year;
char *ss = *s;
if (!**s)
return -1;
while (**s && IS_DIGIT(**s))
Strcat_char(tmp, *((*s)++));
if (tmp->length != 2 && tmp->length != 4) {
*s = ss;
return -1;
}
year = atoi(tmp->ptr);
if (tmp->length == 2) {
if (year >= 70)
year += 1900;
else
year += 2000;
}
return year;
}
static int
get_time(char **s, int *hour, int *min, int *sec)
{
Str tmp = Strnew();
char *ss = *s;
if (!**s)
return -1;
while (**s && IS_DIGIT(**s))
Strcat_char(tmp, *((*s)++));
if (**s != ':') {
*s = ss;
return -1;
}
*hour = atoi(tmp->ptr);
(*s)++;
Strclear(tmp);
while (**s && IS_DIGIT(**s))
Strcat_char(tmp, *((*s)++));
if (**s != ':') {
*s = ss;
return -1;
}
*min = atoi(tmp->ptr);
(*s)++;
Strclear(tmp);
while (**s && IS_DIGIT(**s))
Strcat_char(tmp, *((*s)++));
*sec = atoi(tmp->ptr);
if (*hour < 0 || *hour >= 24 ||
*min < 0 || *min >= 60 || *sec < 0 || *sec >= 60) {
*s = ss;
return -1;
}
return 0;
}
/* RFC 1123 or RFC 850 or ANSI C asctime() format string -> time_t */
time_t
mymktime(char *timestr)
{
char *s;
int day, mon, year, hour, min, sec;
if (!(timestr && *timestr))
return -1;
s = timestr;
#ifdef DEBUG
fprintf(stderr, "mktime: %s\n", timestr);
#endif /* DEBUG */
while (*s && IS_ALPHA(*s))
s++;
while (*s && !IS_ALNUM(*s))
s++;
if (IS_DIGIT(*s)) {
/* RFC 1123 or RFC 850 format */
if ((day = get_day(&s)) == -1)
return -1;
while (*s && !IS_ALNUM(*s))
s++;
if ((mon = get_month(&s)) == -1)
return -1;
while (*s && !IS_DIGIT(*s))
s++;
if ((year = get_year(&s)) == -1)
return -1;
while (*s && !IS_DIGIT(*s))
s++;
if (!*s) {
hour = 0;
min = 0;
sec = 0;
}
else if (get_time(&s, &hour, &min, &sec) == -1) {
return -1;
}
}
else {
/* ANSI C asctime() format. */
while (*s && !IS_ALNUM(*s))
s++;
if ((mon = get_month(&s)) == -1)
return -1;
while (*s && !IS_DIGIT(*s))
s++;
if ((day = get_day(&s)) == -1)
return -1;
while (*s && !IS_DIGIT(*s))
s++;
if (get_time(&s, &hour, &min, &sec) == -1)
return -1;
while (*s && !IS_DIGIT(*s))
s++;
if ((year = get_year(&s)) == -1)
return -1;
}
#ifdef DEBUG
fprintf(stderr, "year=%d month=%d day=%d hour:min:sec=%d:%d:%d\n",
year, mon, day, hour, min, sec);
#endif /* DEBUG */
mon -= 3;
if (mon < 0) {
mon += 12;
year--;
}
day += (year - 1968) * 1461 / 4;
day += ((((mon * 153) + 2) / 5) - 672);
return (time_t) ((day * 60 * 60 * 24) +
(hour * 60 * 60) + (min * 60) + sec);
}
#ifdef INET6
#include <sys/socket.h>
#endif /* INET6 */
#include <netdb.h>
char *
FQDN(char *host)
{
char *p;
#ifndef INET6
struct hostent *entry;
#else /* INET6 */
int *af;
#endif /* INET6 */
if (host == NULL)
return NULL;
if (strcasecmp(host, "localhost") == 0)
return host;
for (p = host; *p && *p != '.'; p++) ;
if (*p == '.')
return host;
#ifndef INET6
if (!(entry = gethostbyname(host)))
return NULL;
return allocStr(entry->h_name, -1);
#else /* INET6 */
for (af = ai_family_order_table[DNS_order];; af++) {
int error;
struct addrinfo hints;
struct addrinfo *res, *res0;
char *namebuf;
memset(&hints, 0, sizeof(hints));
hints.ai_family = *af;
hints.ai_socktype = SOCK_STREAM;
error = getaddrinfo(host, NULL, &hints, &res0);
if (error) {
if (*af == PF_UNSPEC) {
/* all done */
break;
}
/* try next address family */
continue;
}
for (res = res0; res != NULL; res = res->ai_next) {
if (res->ai_canonname) {
/* found */
namebuf = strdup(res->ai_canonname);
freeaddrinfo(res0);
return namebuf;
}
}
freeaddrinfo(res0);
if (*af == PF_UNSPEC) {
break;
}
}
/* all failed */
return NULL;
#endif /* INET6 */
}
#endif /* USE_COOKIE */
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