225 lines
4.0 KiB
C
225 lines
4.0 KiB
C
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/* -*- c-basic-offset: 8 -*-
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rdesktop: A Remote Desktop Protocol client.
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Generic utility functions
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Copyright 2013 Henrik Andersson <hean01@cendio.se> for Cendio AB
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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 3 of the License, or
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(at your option) any later version.
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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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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stdio.h>
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#include <string.h>
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#include <sys/stat.h>
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#include <errno.h>
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#ifdef HAVE_ICONV_H
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#include <iconv.h>
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#endif
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#include "rdesktop.h"
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#ifdef HAVE_ICONV
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extern char g_codepage[16];
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static RD_BOOL g_iconv_works = True;
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#endif
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char *
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utils_string_escape(const char *str)
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{
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const char *p;
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char *pe, *e, esc[4];
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size_t es;
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int cnt;
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/* count indices */
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cnt = 0;
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p = str;
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while (*(p++) != '\0')
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if ((unsigned char) *p < 32 || *p == '%')
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cnt++;
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/* if no characters needs escaping return copy of str */
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if (cnt == 0)
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return strdup(str);
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/* allocate new mem for result */
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es = strlen(str) + (cnt * 3) + 1;
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pe = e = xmalloc(es);
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memset(e, 0, es);
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p = str;
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while (*p != '\0')
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{
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if ((unsigned char) *p < 32 || *p == '%')
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{
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snprintf(esc, 4, "%%%02X", *p);
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memcpy(pe, esc, 3);
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pe += 3;
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}
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else
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{
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*pe = *p;
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pe++;
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}
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p++;
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}
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return e;
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}
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char *
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utils_string_unescape(const char *str)
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{
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char *ns, *ps, *pd, c;
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ns = xmalloc(strlen(str) + 1);
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memcpy(ns, str, strlen(str) + 1);
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ps = pd = ns;
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while (*ps != '\0')
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{
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/* check if found escaped character */
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if (ps[0] == '%')
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{
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if (sscanf(ps, "%%%2hhX", &c) == 1)
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{
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pd[0] = c;
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ps += 3;
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pd++;
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continue;
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}
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}
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/* just copy over the char */
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*pd = *ps;
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ps++;
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pd++;
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}
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pd[0] = '\0';
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return ns;
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}
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int
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utils_mkdir_safe(const char *path, int mask)
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{
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int res = 0;
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struct stat st;
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res = stat(path, &st);
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if (res == -1)
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return mkdir(path, mask);
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if (!S_ISDIR(st.st_mode))
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{
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errno = EEXIST;
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return -1;
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}
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return 0;
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}
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int
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utils_mkdir_p(const char *path, int mask)
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{
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int res;
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char *ptok;
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char pt[PATH_MAX];
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char bp[PATH_MAX];
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if (!path || strlen(path) == 0)
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{
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errno = EINVAL;
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return -1;
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}
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if (strlen(path) > PATH_MAX)
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{
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errno = E2BIG;
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return -1;
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}
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res = 0;
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pt[0] = bp[0] = '\0';
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strcpy(bp, path);
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ptok = strtok(bp, "/");
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if (ptok == NULL)
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return utils_mkdir_safe(path, mask);
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do
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{
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if (ptok != bp)
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strcat(pt, "/");
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strcat(pt, ptok);
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res = utils_mkdir_safe(pt, mask);
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if (res != 0)
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return res;
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}
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while ((ptok = strtok(NULL, "/")) != NULL);
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return 0;
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}
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/* Convert from system locale string to utf-8 */
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int
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utils_locale_to_utf8(const char *src, size_t is, char *dest, size_t os)
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{
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#ifdef HAVE_ICONV
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static iconv_t *iconv_h = (iconv_t) - 1;
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if (strncmp(g_codepage, "UTF-8", strlen("UTF-8")) == 0)
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goto pass_trough_as_is;
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if (g_iconv_works == False)
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goto pass_trough_as_is;
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/* if not already initialize */
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if (iconv_h == (iconv_t) - 1)
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{
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if ((iconv_h = iconv_open("UTF-8", g_codepage)) == (iconv_t) - 1)
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{
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warning("utils_string_to_utf8: iconv_open[%s -> %s] fail %p\n",
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g_codepage, "UTF-8", iconv_h);
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g_iconv_works = False;
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goto pass_trough_as_is;
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}
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}
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/* convert string */
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if (iconv(iconv_h, (ICONV_CONST char **) &src, &is, &dest, &os) == (size_t) - 1)
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{
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iconv_close(iconv_h);
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iconv_h = (iconv_t) - 1;
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warning("utils_string_to_utf8: iconv(1) fail, errno %d\n", errno);
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g_iconv_works = False;
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goto pass_trough_as_is;
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}
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/* Out couldn't hold the entire convertion */
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if (is != 0)
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return -1;
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#endif
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pass_trough_as_is:
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/* can dest hold strcpy of src */
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if (os < (strlen(src) + 1))
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return -1;
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memcpy(dest, src, strlen(src) + 1);
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return 0;
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}
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