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authorPeter Wemm <peter@FreeBSD.org>2014-05-27 07:00:33 +0000
committerPeter Wemm <peter@FreeBSD.org>2014-05-27 07:00:33 +0000
commitbc9ddba9ef9abe23eadcdb51b2ce814c00c00639 (patch)
tree6266be92f31f93e7851b958a90b1f93c3aefbbe8 /encoding
parentf2be5817e9c3cb98a81689acb42dc6549ae0448f (diff)
downloadsrc-bc9ddba9ef9abe23eadcdb51b2ce814c00c00639.tar.gz
src-bc9ddba9ef9abe23eadcdb51b2ce814c00c00639.zip
Vendor import apr-1.5.1vendor/apr/apr-1.5.1
Notes
Notes: svn path=/vendor/apr/dist/; revision=266733 svn path=/vendor/apr/apr-1.5.1/; revision=266734; tag=vendor/apr/apr-1.5.1
Diffstat (limited to 'encoding')
-rw-r--r--encoding/apr_escape.c1181
1 files changed, 1181 insertions, 0 deletions
diff --git a/encoding/apr_escape.c b/encoding/apr_escape.c
new file mode 100644
index 000000000000..2bcfec418fe7
--- /dev/null
+++ b/encoding/apr_escape.c
@@ -0,0 +1,1181 @@
+/* Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/* escape/unescape functions.
+ *
+ * These functions perform various escaping operations, and are provided in
+ * pairs, a function to query the length of and escape existing buffers, as
+ * well as companion functions to perform the same process to memory
+ * allocated from a pool.
+ *
+ * The API is designed to have the smallest possible RAM footprint, and so
+ * will only allocate the exact amount of RAM needed for each conversion.
+ */
+
+#include "apr_escape.h"
+#include "apr_escape_test_char.h"
+#include "apr_lib.h"
+#include "apr_strings.h"
+
+#if APR_CHARSET_EBCDIC
+static int convert_a2e[256] = {
+ 0x00, 0x01, 0x02, 0x03, 0x37, 0x2D, 0x2E, 0x2F, 0x16, 0x05, 0x15, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F,
+ 0x10, 0x11, 0x12, 0x13, 0x3C, 0x3D, 0x32, 0x26, 0x18, 0x19, 0x3F, 0x27, 0x1C, 0x1D, 0x1E, 0x1F,
+ 0x40, 0x5A, 0x7F, 0x7B, 0x5B, 0x6C, 0x50, 0x7D, 0x4D, 0x5D, 0x5C, 0x4E, 0x6B, 0x60, 0x4B, 0x61,
+ 0xF0, 0xF1, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0xF7, 0xF8, 0xF9, 0x7A, 0x5E, 0x4C, 0x7E, 0x6E, 0x6F,
+ 0x7C, 0xC1, 0xC2, 0xC3, 0xC4, 0xC5, 0xC6, 0xC7, 0xC8, 0xC9, 0xD1, 0xD2, 0xD3, 0xD4, 0xD5, 0xD6,
+ 0xD7, 0xD8, 0xD9, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6, 0xE7, 0xE8, 0xE9, 0xAD, 0xE0, 0xBD, 0x5F, 0x6D,
+ 0x79, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96,
+ 0x97, 0x98, 0x99, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6, 0xA7, 0xA8, 0xA9, 0xC0, 0x4F, 0xD0, 0xA1, 0x07,
+ 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x06, 0x17, 0x28, 0x29, 0x2A, 0x2B, 0x2C, 0x09, 0x0A, 0x1B,
+ 0x30, 0x31, 0x1A, 0x33, 0x34, 0x35, 0x36, 0x08, 0x38, 0x39, 0x3A, 0x3B, 0x04, 0x14, 0x3E, 0xFF,
+ 0x41, 0xAA, 0x4A, 0xB1, 0x9F, 0xB2, 0x6A, 0xB5, 0xBB, 0xB4, 0x9A, 0x8A, 0xB0, 0xCA, 0xAF, 0xBC,
+ 0x90, 0x8F, 0xEA, 0xFA, 0xBE, 0xA0, 0xB6, 0xB3, 0x9D, 0xDA, 0x9B, 0x8B, 0xB7, 0xB8, 0xB9, 0xAB,
+ 0x64, 0x65, 0x62, 0x66, 0x63, 0x67, 0x9E, 0x68, 0x74, 0x71, 0x72, 0x73, 0x78, 0x75, 0x76, 0x77,
+ 0xAC, 0x69, 0xED, 0xEE, 0xEB, 0xEF, 0xEC, 0xBF, 0x80, 0xFD, 0xFE, 0xFB, 0xFC, 0xBA, 0xAE, 0x59,
+ 0x44, 0x45, 0x42, 0x46, 0x43, 0x47, 0x9C, 0x48, 0x54, 0x51, 0x52, 0x53, 0x58, 0x55, 0x56, 0x57,
+ 0x8C, 0x49, 0xCD, 0xCE, 0xCB, 0xCF, 0xCC, 0xE1, 0x70, 0xDD, 0xDE, 0xDB, 0xDC, 0x8D, 0x8E, 0xDF };
+
+static int convert_e2a[256] = {
+ 0x00, 0x01, 0x02, 0x03, 0x9C, 0x09, 0x86, 0x7F, 0x97, 0x8D, 0x8E, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F,
+ 0x10, 0x11, 0x12, 0x13, 0x9D, 0x0A, 0x08, 0x87, 0x18, 0x19, 0x92, 0x8F, 0x1C, 0x1D, 0x1E, 0x1F,
+ 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x17, 0x1B, 0x88, 0x89, 0x8A, 0x8B, 0x8C, 0x05, 0x06, 0x07,
+ 0x90, 0x91, 0x16, 0x93, 0x94, 0x95, 0x96, 0x04, 0x98, 0x99, 0x9A, 0x9B, 0x14, 0x15, 0x9E, 0x1A,
+ 0x20, 0xA0, 0xE2, 0xE4, 0xE0, 0xE1, 0xE3, 0xE5, 0xE7, 0xF1, 0xA2, 0x2E, 0x3C, 0x28, 0x2B, 0x7C,
+ 0x26, 0xE9, 0xEA, 0xEB, 0xE8, 0xED, 0xEE, 0xEF, 0xEC, 0xDF, 0x21, 0x24, 0x2A, 0x29, 0x3B, 0x5E,
+ 0x2D, 0x2F, 0xC2, 0xC4, 0xC0, 0xC1, 0xC3, 0xC5, 0xC7, 0xD1, 0xA6, 0x2C, 0x25, 0x5F, 0x3E, 0x3F,
+ 0xF8, 0xC9, 0xCA, 0xCB, 0xC8, 0xCD, 0xCE, 0xCF, 0xCC, 0x60, 0x3A, 0x23, 0x40, 0x27, 0x3D, 0x22,
+ 0xD8, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0xAB, 0xBB, 0xF0, 0xFD, 0xFE, 0xB1,
+ 0xB0, 0x6A, 0x6B, 0x6C, 0x6D, 0x6E, 0x6F, 0x70, 0x71, 0x72, 0xAA, 0xBA, 0xE6, 0xB8, 0xC6, 0xA4,
+ 0xB5, 0x7E, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7A, 0xA1, 0xBF, 0xD0, 0x5B, 0xDE, 0xAE,
+ 0xAC, 0xA3, 0xA5, 0xB7, 0xA9, 0xA7, 0xB6, 0xBC, 0xBD, 0xBE, 0xDD, 0xA8, 0xAF, 0x5D, 0xB4, 0xD7,
+ 0x7B, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0xAD, 0xF4, 0xF6, 0xF2, 0xF3, 0xF5,
+ 0x7D, 0x4A, 0x4B, 0x4C, 0x4D, 0x4E, 0x4F, 0x50, 0x51, 0x52, 0xB9, 0xFB, 0xFC, 0xF9, 0xFA, 0xFF,
+ 0x5C, 0xF7, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5A, 0xB2, 0xD4, 0xD6, 0xD2, 0xD3, 0xD5,
+ 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0xB3, 0xDB, 0xDC, 0xD9, 0xDA, 0x9F };
+#define RAW_ASCII_CHAR(ch) convert_e2a[(unsigned char)ch]
+#else /* APR_CHARSET_EBCDIC */
+#define RAW_ASCII_CHAR(ch) (ch)
+#endif /* !APR_CHARSET_EBCDIC */
+
+/* we assume the folks using this ensure 0 <= c < 256... which means
+ * you need a cast to (unsigned char) first, you can't just plug a
+ * char in here and get it to work, because if char is signed then it
+ * will first be sign extended.
+ */
+#define TEST_CHAR(c, f) (test_char_table[(unsigned)(c)] & (f))
+
+APR_DECLARE(apr_status_t) apr_escape_shell(char *escaped, const char *str,
+ apr_ssize_t slen, apr_size_t *len)
+{
+ unsigned char *d;
+ const unsigned char *s;
+ apr_size_t size = 1;
+ int found = 0;
+
+ d = (unsigned char *) escaped;
+ s = (const unsigned char *) str;
+
+ if (s) {
+ if (d) {
+ for (; *s && slen; ++s, slen--) {
+#if defined(OS2) || defined(WIN32)
+ /*
+ * Newlines to Win32/OS2 CreateProcess() are ill advised.
+ * Convert them to spaces since they are effectively white
+ * space to most applications
+ */
+ if (*s == '\r' || *s == '\n') {
+ if (d) {
+ *d++ = ' ';
+ found = 1;
+ }
+ continue;
+ }
+#endif
+ if (TEST_CHAR(*s, T_ESCAPE_SHELL_CMD)) {
+ *d++ = '\\';
+ size++;
+ found = 1;
+ }
+ *d++ = *s;
+ size++;
+ }
+ *d = '\0';
+ }
+ else {
+ for (; *s && slen; ++s, slen--) {
+ if (TEST_CHAR(*s, T_ESCAPE_SHELL_CMD)) {
+ size++;
+ found = 1;
+ }
+ size++;
+ }
+ }
+ }
+
+ if (len) {
+ *len = size;
+ }
+ if (!found) {
+ return APR_NOTFOUND;
+ }
+
+ return APR_SUCCESS;
+}
+
+APR_DECLARE(const char *) apr_pescape_shell(apr_pool_t *p, const char *str)
+{
+ apr_size_t len;
+
+ switch (apr_escape_shell(NULL, str, APR_ESCAPE_STRING, &len)) {
+ case APR_SUCCESS: {
+ char *cmd = apr_palloc(p, len);
+ apr_escape_shell(cmd, str, APR_ESCAPE_STRING, NULL);
+ return cmd;
+ }
+ case APR_NOTFOUND: {
+ break;
+ }
+ }
+
+ return str;
+}
+
+static char x2c(const char *what)
+{
+ register char digit;
+
+#if !APR_CHARSET_EBCDIC
+ digit =
+ ((what[0] >= 'A') ? ((what[0] & 0xdf) - 'A') + 10 : (what[0] - '0'));
+ digit *= 16;
+ digit += (what[1] >= 'A' ? ((what[1] & 0xdf) - 'A') + 10 : (what[1] - '0'));
+#else /*APR_CHARSET_EBCDIC*/
+ char xstr[5];
+ xstr[0]='0';
+ xstr[1]='x';
+ xstr[2]=what[0];
+ xstr[3]=what[1];
+ xstr[4]='\0';
+ digit = convert_a2e[0xFF & strtol(xstr, NULL, 16)];
+#endif /*APR_CHARSET_EBCDIC*/
+ return (digit);
+}
+
+APR_DECLARE(apr_status_t) apr_unescape_url(char *escaped, const char *url,
+ apr_ssize_t slen, const char *forbid, const char *reserved, int plus,
+ apr_size_t *len)
+{
+ apr_size_t size = 1;
+ int found = 0;
+ const char *s = (const char *) url;
+ char *d = (char *) escaped;
+ register int badesc, badpath;
+
+ if (!url) {
+ return APR_NOTFOUND;
+ }
+
+ badesc = 0;
+ badpath = 0;
+ if (s) {
+ if (d) {
+ for (; *s && slen; ++s, d++, slen--) {
+ if (plus && *s == '+') {
+ *d = ' ';
+ found = 1;
+ }
+ else if (*s != '%') {
+ *d = *s;
+ }
+ else {
+ if (!apr_isxdigit(*(s + 1)) || !apr_isxdigit(*(s + 2))) {
+ badesc = 1;
+ *d = '%';
+ }
+ else {
+ char decoded;
+ decoded = x2c(s + 1);
+ if ((decoded == '\0')
+ || (forbid && strchr(forbid, decoded))) {
+ badpath = 1;
+ *d = decoded;
+ s += 2;
+ slen -= 2;
+ }
+ else if (reserved && strchr(reserved, decoded)) {
+ *d++ = *s++;
+ *d++ = *s++;
+ *d = *s;
+ size += 2;
+ }
+ else {
+ *d = decoded;
+ s += 2;
+ slen -= 2;
+ found = 1;
+ }
+ }
+ }
+ size++;
+ }
+ *d = '\0';
+ }
+ else {
+ for (; *s && slen; ++s, slen--) {
+ if (plus && *s == '+') {
+ found = 1;
+ }
+ else if (*s != '%') {
+ /* character unchanged */
+ }
+ else {
+ if (!apr_isxdigit(*(s + 1)) || !apr_isxdigit(*(s + 2))) {
+ badesc = 1;
+ }
+ else {
+ char decoded;
+ decoded = x2c(s + 1);
+ if ((decoded == '\0')
+ || (forbid && strchr(forbid, decoded))) {
+ badpath = 1;
+ s += 2;
+ slen -= 2;
+ }
+ else if (reserved && strchr(reserved, decoded)) {
+ s += 2;
+ slen -= 2;
+ size += 2;
+ }
+ else {
+ s += 2;
+ slen -= 2;
+ found = 1;
+ }
+ }
+ }
+ size++;
+ }
+ }
+ }
+
+ if (len) {
+ *len = size;
+ }
+ if (badesc) {
+ return APR_EINVAL;
+ }
+ else if (badpath) {
+ return APR_BADCH;
+ }
+ else if (!found) {
+ return APR_NOTFOUND;
+ }
+
+ return APR_SUCCESS;
+}
+
+APR_DECLARE(const char *) apr_punescape_url(apr_pool_t *p, const char *url,
+ const char *forbid, const char *reserved, int plus)
+{
+ apr_size_t len;
+
+ switch (apr_unescape_url(NULL, url, APR_ESCAPE_STRING, forbid, reserved,
+ plus, &len)) {
+ case APR_SUCCESS: {
+ char *buf = apr_palloc(p, len);
+ apr_unescape_url(buf, url, APR_ESCAPE_STRING, forbid, reserved, plus,
+ NULL);
+ return buf;
+ }
+ case APR_EINVAL:
+ case APR_BADCH: {
+ return NULL;
+ }
+ case APR_NOTFOUND: {
+ break;
+ }
+ }
+
+ return url;
+}
+
+/* c2x takes an unsigned, and expects the caller has guaranteed that
+ * 0 <= what < 256... which usually means that you have to cast to
+ * unsigned char first, because (unsigned)(char)(x) first goes through
+ * signed extension to an int before the unsigned cast.
+ *
+ * The reason for this assumption is to assist gcc code generation --
+ * the unsigned char -> unsigned extension is already done earlier in
+ * both uses of this code, so there's no need to waste time doing it
+ * again.
+ */
+static const char c2x_table[] = "0123456789abcdef";
+
+static APR_INLINE unsigned char *c2x(unsigned what, unsigned char prefix,
+ unsigned char *where)
+{
+#if APR_CHARSET_EBCDIC
+ what = convert_e2a[(unsigned char)what];
+#endif /*APR_CHARSET_EBCDIC*/
+ *where++ = prefix;
+ *where++ = c2x_table[what >> 4];
+ *where++ = c2x_table[what & 0xf];
+ return where;
+}
+
+APR_DECLARE(apr_status_t) apr_escape_path_segment(char *escaped,
+ const char *str, apr_ssize_t slen, apr_size_t *len)
+{
+ apr_size_t size = 1;
+ int found = 0;
+ const unsigned char *s = (const unsigned char *) str;
+ unsigned char *d = (unsigned char *) escaped;
+ unsigned c;
+
+ if (s) {
+ if (d) {
+ while ((c = *s) && slen) {
+ if (TEST_CHAR(c, T_ESCAPE_PATH_SEGMENT)) {
+ d = c2x(c, '%', d);
+ size += 2;
+ found = 1;
+ }
+ else {
+ *d++ = c;
+ }
+ ++s;
+ size++;
+ slen--;
+ }
+ *d = '\0';
+ }
+ else {
+ while ((c = *s) && slen) {
+ if (TEST_CHAR(c, T_ESCAPE_PATH_SEGMENT)) {
+ size += 2;
+ found = 1;
+ }
+ ++s;
+ size++;
+ slen--;
+ }
+ }
+ }
+
+ if (len) {
+ *len = size;
+ }
+ if (!found) {
+ return APR_NOTFOUND;
+ }
+
+ return APR_SUCCESS;
+}
+
+APR_DECLARE(const char *) apr_pescape_path_segment(apr_pool_t *p,
+ const char *str)
+{
+ apr_size_t len;
+
+ switch (apr_escape_path_segment(NULL, str, APR_ESCAPE_STRING, &len)) {
+ case APR_SUCCESS: {
+ char *cmd = apr_palloc(p, len);
+ apr_escape_path_segment(cmd, str, APR_ESCAPE_STRING, NULL);
+ return cmd;
+ }
+ case APR_NOTFOUND: {
+ break;
+ }
+ }
+
+ return str;
+}
+
+APR_DECLARE(apr_status_t) apr_escape_path(char *escaped, const char *path,
+ apr_ssize_t slen, int partial, apr_size_t *len)
+{
+ apr_size_t size = 1;
+ int found = 0;
+ const unsigned char *s = (const unsigned char *) path;
+ unsigned char *d = (unsigned char *) escaped;
+ unsigned c;
+
+ if (!path) {
+ return APR_NOTFOUND;
+ }
+
+ if (!partial) {
+ const char *colon = strchr(path, ':');
+ const char *slash = strchr(path, '/');
+
+ if (colon && (!slash || colon < slash)) {
+ if (d) {
+ *d++ = '.';
+ *d++ = '/';
+ }
+ size += 2;
+ found = 1;
+ }
+ }
+ if (d) {
+ while ((c = *s) && slen) {
+ if (TEST_CHAR(c, T_OS_ESCAPE_PATH)) {
+ d = c2x(c, '%', d);
+ }
+ else {
+ *d++ = c;
+ }
+ ++s;
+ size++;
+ slen--;
+ }
+ *d = '\0';
+ }
+ else {
+ while ((c = *s) && slen) {
+ if (TEST_CHAR(c, T_OS_ESCAPE_PATH)) {
+ size += 2;
+ found = 1;
+ }
+ ++s;
+ size++;
+ slen--;
+ }
+ }
+
+ if (len) {
+ *len = size;
+ }
+ if (!found) {
+ return APR_NOTFOUND;
+ }
+
+ return APR_SUCCESS;
+}
+
+APR_DECLARE(const char *) apr_pescape_path(apr_pool_t *p, const char *str,
+ int partial)
+{
+ apr_size_t len;
+
+ switch (apr_escape_path(NULL, str, APR_ESCAPE_STRING, partial, &len)) {
+ case APR_SUCCESS: {
+ char *path = apr_palloc(p, len);
+ apr_escape_path(path, str, APR_ESCAPE_STRING, partial, NULL);
+ return path;
+ }
+ case APR_NOTFOUND: {
+ break;
+ }
+ }
+
+ return str;
+}
+
+APR_DECLARE(apr_status_t) apr_escape_urlencoded(char *escaped, const char *str,
+ apr_ssize_t slen, apr_size_t *len)
+{
+ apr_size_t size = 1;
+ int found = 0;
+ const unsigned char *s = (const unsigned char *) str;
+ unsigned char *d = (unsigned char *) escaped;
+ unsigned c;
+
+ if (s) {
+ if (d) {
+ while ((c = *s) && slen) {
+ if (TEST_CHAR(c, T_ESCAPE_URLENCODED)) {
+ d = c2x(c, '%', d);
+ size += 2;
+ found = 1;
+ }
+ else if (c == ' ') {
+ *d++ = '+';
+ found = 1;
+ }
+ else {
+ *d++ = c;
+ }
+ ++s;
+ size++;
+ slen--;
+ }
+ *d = '\0';
+ }
+ else {
+ while ((c = *s) && slen) {
+ if (TEST_CHAR(c, T_ESCAPE_URLENCODED)) {
+ size += 2;
+ found = 1;
+ }
+ else if (c == ' ') {
+ found = 1;
+ }
+ ++s;
+ size++;
+ slen--;
+ }
+ }
+ }
+
+ if (len) {
+ *len = size;
+ }
+ if (!found) {
+ return APR_NOTFOUND;
+ }
+
+ return APR_SUCCESS;
+}
+
+APR_DECLARE(const char *) apr_pescape_urlencoded(apr_pool_t *p, const char *str)
+{
+ apr_size_t len;
+
+ switch (apr_escape_urlencoded(NULL, str, APR_ESCAPE_STRING, &len)) {
+ case APR_SUCCESS: {
+ char *encoded = apr_palloc(p, len);
+ apr_escape_urlencoded(encoded, str, APR_ESCAPE_STRING, NULL);
+ return encoded;
+ }
+ case APR_NOTFOUND: {
+ break;
+ }
+ }
+
+ return str;
+}
+
+APR_DECLARE(apr_status_t) apr_escape_entity(char *escaped, const char *str,
+ apr_ssize_t slen, int toasc, apr_size_t *len)
+{
+ apr_size_t size = 1;
+ int found = 0;
+ const unsigned char *s = (const unsigned char *) str;
+ unsigned char *d = (unsigned char *) escaped;
+ unsigned c;
+
+ if (s) {
+ if (d) {
+ while ((c = *s) && slen) {
+ if (TEST_CHAR(c, T_ESCAPE_XML)) {
+ switch (c) {
+ case '>': {
+ memcpy(d, "&gt;", 4);
+ size += 4;
+ d += 4;
+ break;
+ }
+ case '<': {
+ memcpy(d, "&lt;", 4);
+ size += 4;
+ d += 4;
+ break;
+ }
+ case '&': {
+ memcpy(d, "&amp;", 5);
+ size += 5;
+ d += 5;
+ break;
+ }
+ case '\"': {
+ memcpy(d, "&quot;", 6);
+ size += 6;
+ d += 6;
+ break;
+ }
+ case '\'': {
+ memcpy(d, "&apos;", 6);
+ size += 6;
+ d += 6;
+ break;
+ }
+ }
+ found = 1;
+ }
+ else if (toasc && !apr_isascii(c)) {
+ int offset = apr_snprintf((char *) d, 6, "&#%3.3d;", c);
+ size += offset;
+ d += offset;
+ found = 1;
+ }
+ else {
+ *d++ = c;
+ size++;
+ }
+ ++s;
+ slen--;
+ }
+ *d = '\0';
+ }
+ else {
+ while ((c = *s) && slen) {
+ if (TEST_CHAR(c, T_ESCAPE_XML)) {
+ switch (c) {
+ case '>': {
+ size += 4;
+ break;
+ }
+ case '<': {
+ size += 4;
+ break;
+ }
+ case '&': {
+ size += 5;
+ break;
+ }
+ case '\"': {
+ size += 6;
+ break;
+ }
+ case '\'': {
+ size += 6;
+ break;
+ }
+ }
+ found = 1;
+ }
+ else if (toasc && !apr_isascii(c)) {
+ char buf[8];
+ size += apr_snprintf(buf, 6, "&#%3.3d;", c);
+ found = 1;
+ }
+ else {
+ size++;
+ }
+ ++s;
+ slen--;
+ }
+ }
+ }
+
+ if (len) {
+ *len = size;
+ }
+ if (!found) {
+ return APR_NOTFOUND;
+ }
+
+ return APR_SUCCESS;
+}
+
+APR_DECLARE(const char *) apr_pescape_entity(apr_pool_t *p, const char *str,
+ int toasc)
+{
+ apr_size_t len;
+
+ switch (apr_escape_entity(NULL, str, APR_ESCAPE_STRING, toasc, &len)) {
+ case APR_SUCCESS: {
+ char *cmd = apr_palloc(p, len);
+ apr_escape_entity(cmd, str, APR_ESCAPE_STRING, toasc, NULL);
+ return cmd;
+ }
+ case APR_NOTFOUND: {
+ break;
+ }
+ }
+
+ return str;
+}
+
+/* maximum length of any ISO-LATIN-1 HTML entity name. */
+#define MAXENTLEN (6)
+
+APR_DECLARE(apr_status_t) apr_unescape_entity(char *unescaped, const char *str,
+ apr_ssize_t slen, apr_size_t *len)
+{
+ int found = 0;
+ apr_size_t size = 1;
+ int val, i, j;
+ char *d = unescaped;
+ const char *s = str;
+ const char *ents;
+ static const char * const entlist[MAXENTLEN + 1] =
+ {
+ NULL, /* 0 */
+ NULL, /* 1 */
+ "lt\074gt\076", /* 2 */
+ "amp\046ETH\320eth\360", /* 3 */
+ "quot\042Auml\304Euml\313Iuml\317Ouml\326Uuml\334auml\344euml"
+ "\353iuml\357ouml\366uuml\374yuml\377", /* 4 */
+ "Acirc\302Aring\305AElig\306Ecirc\312Icirc\316Ocirc\324Ucirc"
+ "\333THORN\336szlig\337acirc\342aring\345aelig\346ecirc\352"
+ "icirc\356ocirc\364ucirc\373thorn\376", /* 5 */
+ "Agrave\300Aacute\301Atilde\303Ccedil\307Egrave\310Eacute\311"
+ "Igrave\314Iacute\315Ntilde\321Ograve\322Oacute\323Otilde"
+ "\325Oslash\330Ugrave\331Uacute\332Yacute\335agrave\340"
+ "aacute\341atilde\343ccedil\347egrave\350eacute\351igrave"
+ "\354iacute\355ntilde\361ograve\362oacute\363otilde\365"
+ "oslash\370ugrave\371uacute\372yacute\375" /* 6 */
+ };
+
+ if (s) {
+ if (d) {
+ for (; *s != '\0' && slen; s++, d++, size++, slen--) {
+ if (*s != '&') {
+ *d = *s;
+ continue;
+ }
+ /* find end of entity */
+ for (i = 1; s[i] != ';' && s[i] != '\0' && (slen - i) != 0;
+ i++) {
+ continue;
+ }
+
+ if (s[i] == '\0' || (slen - i) == 0) { /* treat as normal data */
+ *d = *s;
+ continue;
+ }
+
+ /* is it numeric ? */
+ if (s[1] == '#') {
+ for (j = 2, val = 0; j < i && apr_isdigit(s[j]); j++) {
+ val = val * 10 + s[j] - '0';
+ }
+ s += i;
+ if (j < i || val <= 8 || (val >= 11 && val <= 31)
+ || (val >= 127 && val <= 160) || val >= 256) {
+ d--; /* no data to output */
+ size--;
+ }
+ else {
+ *d = RAW_ASCII_CHAR(val);
+ found = 1;
+ }
+ }
+ else {
+ j = i - 1;
+ if (j > MAXENTLEN || entlist[j] == NULL) {
+ /* wrong length */
+ *d = '&';
+ continue; /* skip it */
+ }
+ for (ents = entlist[j]; *ents != '\0'; ents += i) {
+ if (strncmp(s + 1, ents, j) == 0) {
+ break;
+ }
+ }
+
+ if (*ents == '\0') {
+ *d = '&'; /* unknown */
+ }
+ else {
+ *d = RAW_ASCII_CHAR(((const unsigned char *) ents)[j]);
+ s += i;
+ slen -= i;
+ found = 1;
+ }
+ }
+ }
+ *d = '\0';
+ }
+ else {
+ for (; *s != '\0' && slen; s++, size++, slen--) {
+ if (*s != '&') {
+ continue;
+ }
+ /* find end of entity */
+ for (i = 1; s[i] != ';' && s[i] != '\0' && (slen - i) != 0;
+ i++) {
+ continue;
+ }
+
+ if (s[i] == '\0' || (slen - i) == 0) { /* treat as normal data */
+ continue;
+ }
+
+ /* is it numeric ? */
+ if (s[1] == '#') {
+ for (j = 2, val = 0; j < i && apr_isdigit(s[j]); j++) {
+ val = val * 10 + s[j] - '0';
+ }
+ s += i;
+ if (j < i || val <= 8 || (val >= 11 && val <= 31)
+ || (val >= 127 && val <= 160) || val >= 256) {
+ /* no data to output */
+ size--;
+ }
+ else {
+ found = 1;
+ }
+ }
+ else {
+ j = i - 1;
+ if (j > MAXENTLEN || entlist[j] == NULL) {
+ /* wrong length */
+ continue; /* skip it */
+ }
+ for (ents = entlist[j]; *ents != '\0'; ents += i) {
+ if (strncmp(s + 1, ents, j) == 0) {
+ break;
+ }
+ }
+
+ if (*ents == '\0') {
+ /* unknown */
+ }
+ else {
+ s += i;
+ slen -= i;
+ found = 1;
+ }
+ }
+ }
+ }
+ }
+
+ if (len) {
+ *len = size;
+ }
+ if (!found) {
+ return APR_NOTFOUND;
+ }
+
+ return APR_SUCCESS;
+}
+
+APR_DECLARE(const char *) apr_punescape_entity(apr_pool_t *p, const char *str)
+{
+ apr_size_t len;
+
+ switch (apr_unescape_entity(NULL, str, APR_ESCAPE_STRING, &len)) {
+ case APR_SUCCESS: {
+ char *cmd = apr_palloc(p, len);
+ apr_unescape_entity(cmd, str, APR_ESCAPE_STRING, NULL);
+ return cmd;
+ }
+ case APR_NOTFOUND: {
+ break;
+ }
+ }
+
+ return str;
+}
+
+APR_DECLARE(apr_status_t) apr_escape_echo(char *escaped, const char *str,
+ apr_ssize_t slen, int quote, apr_size_t *len)
+{
+ apr_size_t size = 1;
+ int found = 0;
+ const unsigned char *s = (const unsigned char *) str;
+ unsigned char *d = (unsigned char *) escaped;
+ unsigned c;
+
+ if (s) {
+ if (d) {
+ while ((c = *s) && slen) {
+ if (TEST_CHAR(c, T_ESCAPE_ECHO)) {
+ *d++ = '\\';
+ size++;
+ switch (c) {
+ case '\a':
+ *d++ = 'a';
+ size++;
+ found = 1;
+ break;
+ case '\b':
+ *d++ = 'b';
+ size++;
+ found = 1;
+ break;
+ case '\f':
+ *d++ = 'f';
+ size++;
+ found = 1;
+ break;
+ case '\n':
+ *d++ = 'n';
+ size++;
+ found = 1;
+ break;
+ case '\r':
+ *d++ = 'r';
+ size++;
+ found = 1;
+ break;
+ case '\t':
+ *d++ = 't';
+ size++;
+ found = 1;
+ break;
+ case '\v':
+ *d++ = 'v';
+ size++;
+ found = 1;
+ break;
+ case '\\':
+ *d++ = '\\';
+ size++;
+ found = 1;
+ break;
+ case '"':
+ if (quote) {
+ *d++ = c;
+ size++;
+ found = 1;
+ }
+ else {
+ d[-1] = c;
+ }
+ break;
+ default:
+ c2x(c, 'x', d);
+ d += 3;
+ size += 3;
+ found = 1;
+ break;
+ }
+ }
+ else {
+ *d++ = c;
+ size++;
+ }
+ ++s;
+ slen--;
+ }
+ *d = '\0';
+ }
+ else {
+ while ((c = *s) && slen) {
+ if (TEST_CHAR(c, T_ESCAPE_ECHO)) {
+ size++;
+ switch (c) {
+ case '\a':
+ case '\b':
+ case '\f':
+ case '\n':
+ case '\r':
+ case '\t':
+ case '\v':
+ case '\\':
+ size++;
+ found = 1;
+ break;
+ case '"':
+ if (quote) {
+ size++;
+ found = 1;
+ }
+ break;
+ default:
+ size += 3;
+ found = 1;
+ break;
+ }
+ }
+ else {
+ size++;
+ }
+ ++s;
+ slen--;
+ }
+ }
+ }
+
+ if (len) {
+ *len = size;
+ }
+ if (!found) {
+ return APR_NOTFOUND;
+ }
+
+ return APR_SUCCESS;
+}
+
+APR_DECLARE(const char *) apr_pescape_echo(apr_pool_t *p, const char *str,
+ int quote)
+{
+ apr_size_t len;
+
+ switch (apr_escape_echo(NULL, str, APR_ESCAPE_STRING, quote, &len)) {
+ case APR_SUCCESS: {
+ char *cmd = apr_palloc(p, len);
+ apr_escape_echo(cmd, str, APR_ESCAPE_STRING, quote, NULL);
+ return cmd;
+ }
+ case APR_NOTFOUND: {
+ break;
+ }
+ }
+
+ return str;
+}
+
+APR_DECLARE(apr_status_t) apr_escape_hex(char *dest, const void *src,
+ apr_size_t srclen, int colon, apr_size_t *len)
+{
+ const unsigned char *in = src;
+ apr_size_t size;
+
+ if (!src) {
+ return APR_NOTFOUND;
+ }
+
+ if (dest) {
+ for (size = 0; size < srclen; size++) {
+ if (colon && size) {
+ *dest++ = ':';
+ }
+ *dest++ = c2x_table[in[size] >> 4];
+ *dest++ = c2x_table[in[size] & 0xf];
+ }
+ *dest = '\0';
+ }
+
+ if (len) {
+ if (colon && srclen) {
+ *len = srclen * 3;
+ }
+ else {
+ *len = srclen * 2 + 1;
+ }
+ }
+
+ return APR_SUCCESS;
+}
+
+APR_DECLARE(const char *) apr_pescape_hex(apr_pool_t *p, const void *src,
+ apr_size_t srclen, int colon)
+{
+ apr_size_t len;
+
+ switch (apr_escape_hex(NULL, src, srclen, colon, &len)) {
+ case APR_SUCCESS: {
+ char *cmd = apr_palloc(p, len);
+ apr_escape_hex(cmd, src, srclen, colon, NULL);
+ return cmd;
+ }
+ case APR_NOTFOUND: {
+ break;
+ }
+ }
+
+ return src;
+}
+
+APR_DECLARE(apr_status_t) apr_unescape_hex(void *dest, const char *str,
+ apr_ssize_t slen, int colon, apr_size_t *len)
+{
+ apr_size_t size = 0;
+ int flip = 0;
+ const unsigned char *s = (const unsigned char *) str;
+ unsigned char *d = (unsigned char *) dest;
+ unsigned c;
+ unsigned char u = 0;
+
+ if (s) {
+ if (d) {
+ while ((c = *s) && slen) {
+
+ if (!flip) {
+ u = 0;
+ }
+
+ if (colon && c == ':' && !flip) {
+ ++s;
+ slen--;
+ continue;
+ }
+ else if (apr_isdigit(c)) {
+ u |= c - '0';
+ }
+ else if (apr_isupper(c) && c <= 'F') {
+ u |= c - ('A' - 10);
+ }
+ else if (apr_islower(c) && c <= 'f') {
+ u |= c - ('a' - 10);
+ }
+ else {
+ return APR_BADCH;
+ }
+
+ if (flip) {
+ *d++ = u;
+ size++;
+ }
+ else {
+ u <<= 4;
+ *d = u;
+ }
+ flip = !flip;
+
+ ++s;
+ slen--;
+ }
+ }
+ else {
+ while ((c = *s) && slen) {
+
+ if (colon && c == ':' && !flip) {
+ ++s;
+ slen--;
+ continue;
+ }
+ else if (apr_isdigit(c)) {
+ /* valid */
+ }
+ else if (apr_isupper(c) && c <= 'F') {
+ /* valid */
+ }
+ else if (apr_islower(c) && c <= 'f') {
+ /* valid */
+ }
+ else {
+ return APR_BADCH;
+ }
+
+ if (flip) {
+ size++;
+ }
+ flip = !flip;
+
+ ++s;
+ slen--;
+ }
+ }
+ }
+
+ if (len) {
+ *len = size;
+ }
+ if (!s) {
+ return APR_NOTFOUND;
+ }
+
+ return APR_SUCCESS;
+}
+
+APR_DECLARE(const void *) apr_punescape_hex(apr_pool_t *p, const char *str,
+ int colon, apr_size_t *len)
+{
+ apr_size_t size;
+
+ switch (apr_unescape_hex(NULL, str, APR_ESCAPE_STRING, colon, &size)) {
+ case APR_SUCCESS: {
+ void *cmd = apr_palloc(p, size);
+ apr_unescape_hex(cmd, str, APR_ESCAPE_STRING, colon, len);
+ return cmd;
+ }
+ case APR_BADCH:
+ case APR_NOTFOUND: {
+ break;
+ }
+ }
+
+ return NULL;
+}