368 lines
7 KiB
C
368 lines
7 KiB
C
/*
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* ircd-ratbox: A slightly useful ircd.
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* tools.c: Various functions needed here and there.
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*
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* Copyright (C) 1996-2002 Hybrid Development Team
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* Copyright (C) 2002-2005 ircd-ratbox development team
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
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* USA
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*
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* $Id: tools.c 26170 2008-10-26 20:59:07Z androsyn $
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*
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* Here is the original header:
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*
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* Useful stuff, ripped from places ..
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* adrian chadd <adrian@creative.net.au>
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*
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* The TOOLS_C define builds versions of the functions in tools.h
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* so that they end up in the resulting object files. If its not
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* defined, tools.h will build inlined versions of the functions
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* on supported compilers
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*/
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#define _GNU_SOURCE 1
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#include <libratbox_config.h>
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#include <ratbox_lib.h>
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#include <rb_tools.h>
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/*
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* init_rb_dlink_nodes
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*
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*/
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static rb_bh *dnode_heap;
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void
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rb_init_rb_dlink_nodes(size_t dh_size)
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{
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dnode_heap = rb_bh_create(sizeof(rb_dlink_node), dh_size, "librb_dnode_heap");
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if(dnode_heap == NULL)
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rb_outofmemory();
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}
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/*
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* make_rb_dlink_node
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*
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* inputs - NONE
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* output - pointer to new rb_dlink_node
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* side effects - NONE
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*/
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rb_dlink_node *
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rb_make_rb_dlink_node(void)
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{
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return (rb_bh_alloc(dnode_heap));
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}
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/*
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* free_rb_dlink_node
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*
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* inputs - pointer to rb_dlink_node
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* output - NONE
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* side effects - free given rb_dlink_node
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*/
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void
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rb_free_rb_dlink_node(rb_dlink_node *ptr)
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{
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assert(ptr != NULL);
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rb_bh_free(dnode_heap, ptr);
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}
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/* rb_string_to_array()
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* Changes a given buffer into an array of parameters.
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* Taken from ircd-ratbox.
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*
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* inputs - string to parse, array to put in
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* outputs - number of parameters
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*/
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int
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rb_string_to_array(char *string, char **parv, int maxpara)
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{
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char *p, *xbuf = string;
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int x = 0;
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parv[x] = NULL;
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if(string == NULL || string[0] == '\0')
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return x;
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while(*xbuf == ' ') /* skip leading spaces */
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xbuf++;
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if(*xbuf == '\0') /* ignore all-space args */
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return x;
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do
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{
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if(*xbuf == ':') /* Last parameter */
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{
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xbuf++;
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parv[x++] = xbuf;
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parv[x] = NULL;
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return x;
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}
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else
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{
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parv[x++] = xbuf;
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parv[x] = NULL;
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if((p = strchr(xbuf, ' ')) != NULL)
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{
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*p++ = '\0';
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xbuf = p;
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}
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else
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return x;
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}
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while(*xbuf == ' ')
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xbuf++;
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if(*xbuf == '\0')
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return x;
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}
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while(x < maxpara - 1);
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if(*p == ':')
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p++;
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parv[x++] = p;
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parv[x] = NULL;
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return x;
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}
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#ifndef HAVE_STRLCAT
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size_t
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rb_strlcat(char *dest, const char *src, size_t count)
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{
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size_t dsize = strlen(dest);
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size_t len = strlen(src);
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size_t res = dsize + len;
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dest += dsize;
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count -= dsize;
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if(len >= count)
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len = count - 1;
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memcpy(dest, src, len);
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dest[len] = 0;
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return res;
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}
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#else
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size_t
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rb_strlcat(char *dest, const char *src, size_t count)
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{
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return strlcat(dest, src, count);
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}
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#endif
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#ifndef HAVE_STRLCPY
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size_t
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rb_strlcpy(char *dest, const char *src, size_t size)
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{
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size_t ret = strlen(src);
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if(size)
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{
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size_t len = (ret >= size) ? size - 1 : ret;
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memcpy(dest, src, len);
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dest[len] = '\0';
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}
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return ret;
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}
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#else
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size_t
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rb_strlcpy(char *dest, const char *src, size_t size)
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{
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return strlcpy(dest, src, size);
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}
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#endif
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#ifndef HAVE_STRNLEN
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size_t
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rb_strnlen(const char *s, size_t count)
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{
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const char *sc;
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for(sc = s; count-- && *sc != '\0'; ++sc)
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;
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return sc - s;
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}
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#else
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size_t
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rb_strnlen(const char *s, size_t count)
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{
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return strnlen(s, count);
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}
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#endif
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/* rb_basename
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*
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* input -
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* output -
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* side effects -
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*/
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char *
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rb_basename(const char *path)
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{
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const char *s;
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if(!(s = strrchr(path, '/')))
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s = path;
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else
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s++;
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return rb_strdup(s);
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}
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/*
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* rb_dirname
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*/
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char *
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rb_dirname (const char *path)
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{
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char *s;
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s = strrchr(path, '/');
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if(s == NULL)
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{
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return rb_strdup(".");
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}
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/* remove extra slashes */
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while(s > path && *s == '/')
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--s;
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return rb_strndup(path, ((uintptr_t)s - (uintptr_t)path) + 2);
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}
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size_t rb_zstring_serialized(rb_zstring_t *zs, void **buf, size_t *buflen)
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{
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uint8_t *p;
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size_t alloclen = sizeof(uint16_t) + zs->len;
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p = rb_malloc(sizeof(alloclen));
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memcpy(p, &zs->len, sizeof(uint16_t));
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p += sizeof(uint16_t);
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memcpy(p, zs->data, zs->len);
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return alloclen;
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}
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size_t rb_zstring_deserialize(rb_zstring_t *zs, void *buf)
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{
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uint8_t *p = (uint8_t *)buf;
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memcpy(&zs->len, p, sizeof(uint16_t));
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p += sizeof(uint16_t);
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if(zs->len == 0)
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{
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zs->data = NULL;
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return sizeof(uint16_t);
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}
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zs->data = rb_malloc(zs->len);
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memcpy(zs->data, p, zs->len);
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return zs->len + sizeof(uint16_t);
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}
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void rb_zstring_free(rb_zstring_t *zs)
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{
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rb_free(zs->data);
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rb_free(zs);
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}
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rb_zstring_t *rb_zstring_alloc(void)
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{
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rb_zstring_t *zs = rb_malloc(sizeof(rb_zstring_t));
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return zs;
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}
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rb_zstring_t *rb_zstring_from_c_len(const char *buf, size_t len)
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{
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rb_zstring_t *zs;
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if(len > UINT16_MAX-1)
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return NULL;
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zs = rb_zstring_alloc();
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zs->alloclen = zs->len = (uint16_t)len;
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zs->alloclen = (uint16_t)len;
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if(zs->alloclen < 128)
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zs->alloclen = 128;
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zs->data = rb_malloc(zs->alloclen);
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memcpy(zs->data, buf, zs->len);
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return(zs);
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}
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rb_zstring_t *rb_zstring_from_c(const char *buf)
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{
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return rb_zstring_from_c_len(buf, strlen(buf));
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}
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size_t rb_zstring_len(rb_zstring_t *zs)
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{
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return zs->len;
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}
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void rb_zstring_append_from_zstring(rb_zstring_t *dst_zs, rb_zstring_t *src_zs)
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{
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void *ep;
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size_t nlen = dst_zs->len + src_zs->len;
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if(nlen > dst_zs->alloclen)
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{
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dst_zs->alloclen += src_zs->len + 64;
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dst_zs->data = rb_realloc(dst_zs->data, dst_zs->alloclen);
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}
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ep = dst_zs->data + dst_zs->len;
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memcpy(ep, src_zs->data, src_zs->len);
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}
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void rb_zstring_append_from_c(rb_zstring_t *zs, const char *buf, size_t len)
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{
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void *ep;
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size_t nlen = zs->len + len;
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if(nlen > zs->alloclen)
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{
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zs->alloclen += len + 64;
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zs->data = rb_realloc(zs->data, zs->alloclen);
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}
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ep = zs->data + zs->len;
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zs->len += len;
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memcpy(ep, buf, len);
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}
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char *rb_zstring_to_c(rb_zstring_t *zs, char *buf, size_t len)
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{
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size_t cpylen;
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if(len < zs->len)
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cpylen = len - 1;
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else
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cpylen = zs->len;
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buf[cpylen] = '\0';
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memcpy(buf, zs->data, cpylen);
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return buf;
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}
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char *rb_zstring_to_c_alloc(rb_zstring_t *zs)
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{
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char *p;
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p = rb_malloc(zs->len+1);
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memcpy(p, zs->data, zs->len);
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return p;
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}
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size_t rb_zstring_to_ptr(rb_zstring_t *zs, void **ptr)
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{
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*ptr = (void *)zs->data;
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return zs->len;
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}
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