owntone-server/src/compat.c

517 lines
16 KiB
C

#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <string.h>
#include <ctype.h>
#include <time.h>
#include <string.h>
#include <stdio.h>
#if !HAVE_STRCASESTR
/* case-independent string matching, similar to strstr but
* matching */
char * strcasestr(char* haystack, char* needle) {
int i;
int nlength = (int) strlen (needle);
int hlength = (int) strlen (haystack);
if (nlength > hlength) return NULL;
if (hlength <= 0) return NULL;
if (nlength <= 0) return haystack;
/* hlength and nlength > 0, nlength <= hlength */
for (i = 0; i <= (hlength - nlength); i++) {
if (strncasecmp (haystack + i, needle, nlength) == 0) {
return haystack + i;
}
}
/* substring not found */
return NULL;
}
#endif /* !HAVE_STRCASESTR */
/*
* Copyright (c) 1994 Powerdog Industries. All rights reserved.
*
* Redistribution and use in source and binary forms, without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* 3. All advertising materials mentioning features or use of this
* software must display the following acknowledgement:
* This product includes software developed by Powerdog Industries.
* 4. The name of Powerdog Industries may not be used to endorse or
* promote products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY POWERDOG INDUSTRIES ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE POWERDOG INDUSTRIES BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef HAVE_STRPTIME
#define asizeof(a) (sizeof (a) / sizeof ((a)[0]))
#ifndef sun
struct dtconv {
char *abbrev_month_names[12];
char *month_names[12];
char *abbrev_weekday_names[7];
char *weekday_names[7];
char *time_format;
char *sdate_format;
char *dtime_format;
char *am_string;
char *pm_string;
char *ldate_format;
};
#endif
static struct dtconv En_US = {
{ "Jan", "Feb", "Mar", "Apr", "May", "Jun",
"Jul", "Aug", "Sep", "Oct", "Nov", "Dec" },
{ "January", "February", "March", "April",
"May", "June", "July", "August",
"September", "October", "November", "December" },
{ "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" },
{ "Sunday", "Monday", "Tuesday", "Wednesday",
"Thursday", "Friday", "Saturday" },
"%H:%M:%S",
"%m/%d/%y",
"%a %b %e %T %Z %Y",
"AM",
"PM",
"%A, %B, %e, %Y"
};
#ifdef SUNOS4
extern int strncasecmp();
#endif
void lowercase_string(char *buffer) {
while(*buffer) {
*buffer = tolower(*buffer);
buffer++;
}
}
char *strptime(char *buf, char *fmt, struct tm *tm) {
char c,
*ptr;
int i, j,
len;
ptr = fmt;
while (*ptr != 0) {
if (*buf == 0)
break;
c = *ptr++;
if (c != '%') {
if (isspace(c))
while (*buf != 0 && isspace(*buf))
buf++;
else if (c != *buf++)
return 0;
continue;
}
c = *ptr++;
switch (c) {
case 0:
case '%':
if (*buf++ != '%')
return 0;
break;
case 'C':
buf = strptime(buf, En_US.ldate_format, tm);
if (buf == 0)
return 0;
break;
case 'c':
buf = strptime(buf, "%x %X", tm);
if (buf == 0)
return 0;
break;
case 'D':
buf = strptime(buf, "%m/%d/%y", tm);
if (buf == 0)
return 0;
break;
case 'R':
buf = strptime(buf, "%H:%M", tm);
if (buf == 0)
return 0;
break;
case 'r':
buf = strptime(buf, "%I:%M:%S %p", tm);
if (buf == 0)
return 0;
break;
case 'T':
buf = strptime(buf, "%H:%M:%S", tm);
if (buf == 0)
return 0;
break;
case 'X':
buf = strptime(buf, En_US.time_format, tm);
if (buf == 0)
return 0;
break;
case 'x':
buf = strptime(buf, En_US.sdate_format, tm);
if (buf == 0)
return 0;
break;
case 'j':
if (!isdigit(*buf))
return 0;
for (i = 0; *buf != 0 && isdigit(*buf); buf++) {
i *= 10;
i += *buf - '0';
}
if (i > 365)
return 0;
tm->tm_yday = i;
break;
case 'M':
case 'S':
if (*buf == 0 || isspace(*buf))
break;
if (!isdigit(*buf))
return 0;
for (j=0,i = 0; *buf != 0 && isdigit(*buf) && j<2; j++,buf++) {
i *= 10;
i += *buf - '0';
}
if (i > 59)
return 0;
if (c == 'M')
tm->tm_min = i;
else
tm->tm_sec = i;
if (*buf != 0 && isspace(*buf))
while (*ptr != 0 && !isspace(*ptr))
ptr++;
break;
case 'H':
case 'I':
case 'k':
case 'l':
if (!isdigit(*buf))
return 0;
for (j=0,i = 0; *buf != 0 && isdigit(*buf) && j<2; j++,buf++) {
i *= 10;
i += *buf - '0';
}
if (c == 'H' || c == 'k') {
if (i > 23)
return 0;
} else if (i > 11)
return 0;
tm->tm_hour = i;
if (*buf != 0 && isspace(*buf))
while (*ptr != 0 && !isspace(*ptr))
ptr++;
break;
case 'p':
len = (int) strlen(En_US.am_string);
lowercase_string( buf );
if (strncmp(buf, En_US.am_string, len) == 0) {
if (tm->tm_hour > 12)
return 0;
if (tm->tm_hour == 12)
tm->tm_hour = 0;
buf += len;
break;
}
len = (int) strlen(En_US.pm_string);
if (strncmp(buf, En_US.pm_string, len) == 0) {
if (tm->tm_hour > 12)
return 0;
if (tm->tm_hour != 12)
tm->tm_hour += 12;
buf += len;
break;
}
return 0;
case 'A':
case 'a':
for (i = 0; i < asizeof(En_US.weekday_names); i++) {
len = (int) strlen(En_US.weekday_names[i]);
lowercase_string( buf );
if (strncmp(buf,
En_US.weekday_names[i],
len) == 0)
break;
len = (int) strlen(En_US.abbrev_weekday_names[i]);
if (strncmp(buf,
En_US.abbrev_weekday_names[i],
len) == 0)
break;
}
if (i == asizeof(En_US.weekday_names))
return 0;
tm->tm_wday = i;
buf += len;
break;
case 'd':
case 'e':
if (!isdigit(*buf))
return 0;
for (j=0,i = 0; *buf != 0 && isdigit(*buf) && j<2; j++,buf++) {
i *= 10;
i += *buf - '0';
}
if (i > 31)
return 0;
tm->tm_mday = i;
if (*buf != 0 && isspace(*buf))
while (*ptr != 0 && !isspace(*ptr))
ptr++;
break;
case 'B':
case 'b':
case 'h':
for (i = 0; i < asizeof(En_US.month_names); i++) {
len = (int) strlen(En_US.month_names[i]);
lowercase_string( buf );
if (strncmp(buf, En_US.month_names[i],len) == 0)
break;
len = (int) strlen(En_US.abbrev_month_names[i]);
if (strncmp(buf,
En_US.abbrev_month_names[i],
len) == 0)
break;
}
if (i == asizeof(En_US.month_names))
return 0;
tm->tm_mon = i;
buf += len;
break;
case 'm':
if (!isdigit(*buf))
return 0;
for (j=0,i = 0; *buf != 0 && isdigit(*buf) && j<2; j++,buf++) {
i *= 10;
i += *buf - '0';
}
if (i < 1 || i > 12)
return 0;
tm->tm_mon = i - 1;
if (*buf != 0 && isspace(*buf))
while (*ptr != 0 && !isspace(*ptr))
ptr++;
break;
case 'Y':
case 'y':
if (*buf == 0 || isspace(*buf))
break;
if (!isdigit(*buf))
return 0;
for (j=0,i = 0; *buf != 0 && isdigit(*buf) && j<((c=='Y')?4:2); j++,buf++) {
i *= 10;
i += *buf - '0';
}
if (c == 'Y')
i -= 1900;
else if (i < 69) /*c=='y', 00-68 is for 20xx, the rest is for 19xx*/
i += 100;
if (i < 0)
return 0;
tm->tm_year = i;
if (*buf != 0 && isspace(*buf))
while (*ptr != 0 && !isspace(*ptr))
ptr++;
break;
}
}
return buf;
}
#endif /* ndef HAVE_STRPTIME */
/* Compliments of Jay Freeman <saurik@saurik.com> */
#if !HAVE_STRSEP
char *strsep(char **stringp, const char *delim) {
char *ret = *stringp;
if (ret == NULL) return(NULL); /* grrr */
if ((*stringp = strpbrk(*stringp, delim)) != NULL) {
*((*stringp)++) = '\0';
}
return(ret);
}
#endif /* !HAVE_STRSEP */
/* Reentrant string tokenizer. Generic version.
Copyright (C) 1991,1996-1999,2001,2004 Free Software Foundation, Inc.
This file is part of the GNU C Library.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation,
Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
#ifndef HAVE_STRTOK_R
#include <stdio.h>
/* Parse S into tokens separated by characters in DELIM.
If S is NULL, the saved pointer in SAVE_PTR is used as
the next starting point. For example:
char s[] = "-abc-=-def";
char *sp;
x = strtok_r(s, "-", &sp); // x = "abc", sp = "=-def"
x = strtok_r(NULL, "-=", &sp); // x = "def", sp = NULL
x = strtok_r(NULL, "=", &sp); // x = NULL
// s = "abc\0-def\0"
*/
char *strtok_r(char *s, const char *delim, char **last)
{
char *spanp;
int c, sc;
char *tok;
if (s == NULL && (s = *last) == NULL) {
return NULL;
}
/*
* Skip (span) leading delimiters (s += strspn(s, delim), sort of).
*/
cont:
c = *s++;
for (spanp = (char *)delim; (sc = *spanp++) != 0; ) {
if (c == sc) {
goto cont;
}
}
if (c == 0) { /* no non-delimiter characters */
*last = NULL;
return NULL;
}
tok = s - 1;
/*
* Scan token (scan for delimiters: s += strcspn(s, delim), sort of).
* Note that delim must have one NUL; we stop if we see that, too.
*/
for (;;) {
c = *s++;
spanp = (char *)delim;
do {
if ((sc = *spanp++) == c) {
if (c == 0) {
s = NULL;
}
else {
char *w = s - 1;
*w = '\0';
}
*last = s;
return tok;
}
}
while (sc != 0);
}
/* NOTREACHED */
}
#endif
#ifndef HAVE_TIMEGM
time_t timegm(struct tm *tm) {
time_t ret;
char *tz;
char buffer[255];
tz = getenv("TZ");
_putenv("TZ=UTC0");
_tzset();
ret = mktime(tm);
if(tz)
sprintf(buffer,"TZ=%s",tz);
else
strcpy(buffer,"TZ=");
_putenv(buffer);
_tzset();
return ret;
}
#endif