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1238b9d8cd
This will avoid a ninja-build from picking up a config.h generated by the autotools build (in the root build directory). Picking up the wrong config.h may lead to all kinds of subtle issues if the autotools run was done with different options than the cmake run.
164 lines
4.3 KiB
C++
164 lines
4.3 KiB
C++
/********************************************************************\
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* escape.c : escape SQL reserved characters *
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* Copyright (C) 2001 Linas Vepstas <linas@linas.org> *
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* *
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* This program is free software; you can redistribute it and/or *
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* modify it under the terms of the GNU General Public License as *
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* published by the Free Software Foundation; either version 2 of *
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* the License, or (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, contact: *
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* *
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* Free Software Foundation Voice: +1-617-542-5942 *
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* 51 Franklin Street, Fifth Floor Fax: +1-617-542-2652 *
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* Boston, MA 02110-1301, USA gnu@gnu.org *
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\********************************************************************/
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/*
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* FILE:
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* esacpe.c
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*
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* FUNCTION:
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* Escapes the ' and \ characters in a string
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*/
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#include <config.h>
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#include <glib.h>
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#include <string.h>
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#include "gnc-engine.h"
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#include "escape.h"
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static QofLogModule log_module = GNC_MOD_BACKEND;
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/* ================================================ */
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struct _escape
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{
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/* pointer to memory used for escaping arguments */
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char* escape;
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size_t esc_buflen;
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};
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/* ================================================ */
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/* escape single-quote marks and backslashes so that the
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* database SQL parser doesn't puke on the query string
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*/
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const char*
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sqlEscapeString (sqlEscape* b, const char* str)
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{
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const char* p, *src_head;
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char* dst_tail;
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size_t len, slen;
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ENTER ("str = %s", str);
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if (!b || !str)
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{
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LEAVE ("(null) args");
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return NULL;
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}
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/* if a string is escaped twice, just return the first */
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if (b->escape == str)
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{
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LEAVE ("%s: already escaped", str);
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return str;
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}
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/* if nothing to escape, just return */
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len = strlen (str);
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slen = strcspn (str, "\\\'");
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if (len == slen)
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{
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LEAVE ("nothing to escape");
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return str;
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}
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/* count to see how much space we'll need */
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p = str + slen + 1;
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while (*p)
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{
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len ++;
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p += 1 + strcspn (p, "\\\'");
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}
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/* get more space, if needed */
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if (len >= b->esc_buflen)
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{
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b->escape = static_cast < decltype (b->escape) > (g_realloc (b->escape,
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len + 100));
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b->esc_buflen = len + 100;
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}
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/* copy and escape */
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src_head = (char*) str;
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dst_tail = b->escape;
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p = src_head + strcspn (src_head, "\\\'");
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while (*p)
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{
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size_t cp_len = p - src_head;
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strncpy (dst_tail, src_head, cp_len);
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dst_tail += cp_len;
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*dst_tail = '\\';
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dst_tail ++;
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*dst_tail = *p;
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dst_tail ++;
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src_head = p + 1;
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p = src_head + strcspn (src_head, "\\\'");
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}
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if (p != src_head)
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{
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size_t cp_len = p - src_head;
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strncpy (dst_tail, src_head, cp_len);
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dst_tail += cp_len;
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}
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*dst_tail = 0;
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LEAVE ("b->escape = %s", b->escape);
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return b->escape;
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}
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/* ================================================ */
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#define INITIAL_BUFSZ 2000
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sqlEscape*
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sqlEscape_new (void)
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{
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sqlEscape* b = g_new (sqlEscape, 1);
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b->escape = static_cast < decltype (b->escape) > (g_malloc (INITIAL_BUFSZ));
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b->esc_buflen = INITIAL_BUFSZ;
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return (b);
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}
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/* ================================================ */
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void
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sqlEscape_destroy (sqlEscape* b)
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{
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ENTER (" ");
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if (!b)
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{
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LEAVE ("b is (null)");
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return;
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}
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g_free (b->escape);
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b->escape = NULL;
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g_free (b);
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LEAVE (" ");
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}
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/* ================ END OF FILE ==================== */
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