Moved base64 module into utils directory.

2 files changed, 186 insertions, 0 deletions

diff --git a/src/utils/base64.cpp b/src/utils/base64.cpp
new file mode 100644
index 00000000..9a8f6356
--- /dev/null
+++ b/src/utils/base64.cpp
@@ -0,0 +1,149 @@
+/*
+   +----------------------------------------------------------------------+
+   | PHP HTML Embedded Scripting Language Version 3.0                     |
+   +----------------------------------------------------------------------+
+   | Copyright (c) 1997-2000 PHP Development Team (See Credits file)      |
+   +----------------------------------------------------------------------+
+   | This program is free software; you can redistribute it and/or modify |
+   | it under the terms of one of the following licenses:                 |
+   |                                                                      |
+   |  A) the GNU General Public License as published by the Free Software |
+   |     Foundation; either version 2 of the License, or (at your option) |
+   |     any later version.                                               |
+   |                                                                      |
+   |  B) the PHP License as published by the PHP Development Team and     |
+   |     included in the distribution in the file: LICENSE                |
+   |                                                                      |
+   | 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 both licenses referred to here.   |
+   | If you did not, or have any questions about PHP licensing, please    |
+   | contact core@php.net.                                                |
+   +----------------------------------------------------------------------+
+   | Author: Jim Winstead (jimw@php.net)                                  |
+   +----------------------------------------------------------------------+
+   */
+/* $Id$ */
+
+#include <string.h>
+#include <stdlib.h>
+
+#include "base64.h"
+
+static char base64_table[] =
+{
+    'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M',
+    'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z',
+    'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm',
+    'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z',
+    '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '+', '/', '\0'
+};
+static char base64_pad = '=';
+
+unsigned char *php3_base64_encode(const unsigned char *string, int length, int *ret_length) {
+    const unsigned char *current = string;
+    int i = 0;
+    unsigned char *result = (unsigned char *)malloc(((length + 3 - length % 3) * 4 / 3 + 1) * sizeof(char));
+
+    while (length > 2) { /* keep going until we have less than 24 bits */
+        result[i++] = base64_table[current[0] >> 2];
+        result[i++] = base64_table[((current[0] & 0x03) << 4) + (current[1] >> 4)];
+        result[i++] = base64_table[((current[1] & 0x0f) << 2) + (current[2] >> 6)];
+        result[i++] = base64_table[current[2] & 0x3f];
+
+        current += 3;
+        length -= 3; /* we just handle 3 octets of data */
+    }
+
+    /* now deal with the tail end of things */
+    if (length != 0) {
+        result[i++] = base64_table[current[0] >> 2];
+        if (length > 1) {
+            result[i++] = base64_table[((current[0] & 0x03) << 4) + (current[1] >> 4)];
+            result[i++] = base64_table[(current[1] & 0x0f) << 2];
+            result[i++] = base64_pad;
+        }
+        else {
+            result[i++] = base64_table[(current[0] & 0x03) << 4];
+            result[i++] = base64_pad;
+            result[i++] = base64_pad;
+        }
+    }
+    if(ret_length) {
+        *ret_length = i;
+    }
+    result[i] = '\0';
+    return result;
+}
+
+/* as above, but backwards. :) */
+unsigned char *php3_base64_decode(const unsigned char *string, int length, int *ret_length) {
+    const unsigned char *current = string;
+    int ch, i = 0, j = 0, k;
+    char *chp;
+
+    unsigned char *result = (unsigned char *)malloc(length + 1);
+
+    if (result == NULL) {
+        return NULL;
+    }
+
+    /* run through the whole string, converting as we go */
+    while ((ch = *current++) != '\0') {
+        if (ch == base64_pad) break;
+
+        /* When Base64 gets POSTed, all pluses are interpreted as spaces.
+           This line changes them back.  It's not exactly the Base64 spec,
+           but it is completely compatible with it (the spec says that
+           spaces are invalid).  This will also save many people considerable
+           headache.  - Turadg Aleahmad <turadg@wise.berkeley.edu>
+           */
+
+        if (ch == ' ') ch = '+';
+
+        chp = strchr(base64_table, ch);
+        if (chp == NULL) continue;
+        ch = chp - base64_table;
+
+        switch(i % 4) {
+            case 0:
+                result[j] = ch << 2;
+                break;
+            case 1:
+                result[j++] |= ch >> 4;
+                result[j] = (ch & 0x0f) << 4;
+                break;
+            case 2:
+                result[j++] |= ch >>2;
+                result[j] = (ch & 0x03) << 6;
+                break;
+            case 3:
+                result[j++] |= ch;
+                break;
+        }
+        i++;
+    }
+
+    k = j;
+    /* mop things up if we ended on a boundary */
+    if (ch == base64_pad) {
+        switch(i % 4) {
+            case 0:
+            case 1:
+                free(result);
+                return NULL;
+            case 2:
+                k++;
+            case 3:
+                result[k++] = 0;
+        }
+    }
+    if(ret_length) {
+        *ret_length = j;
+    }
+    result[k] = '\0';
+    return result;
+}
diff --git a/src/utils/base64.h b/src/utils/base64.h
new file mode 100644
index 00000000..ff20ac53
--- /dev/null
+++ b/src/utils/base64.h
@@ -0,0 +1,37 @@
+/*
+   +----------------------------------------------------------------------+
+   | PHP HTML Embedded Scripting Language Version 3.0                     |
+   +----------------------------------------------------------------------+
+   | Copyright (c) 1997,1998 PHP Development Team (See Credits file)      |
+   +----------------------------------------------------------------------+
+   | This program is free software; you can redistribute it and/or modify |
+   | it under the terms of one of the following licenses:                 |
+   |                                                                      |
+   |  A) the GNU General Public License as published by the Free Software |
+   |     Foundation; either version 2 of the License, or (at your option) |
+   |     any later version.                                               |
+   |                                                                      |
+   |  B) the PHP License as published by the PHP Development Team and     |
+   |     included in the distribution in the file: LICENSE                |
+   |                                                                      |
+   | 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 both licenses referred to here.   |
+   | If you did not, or have any questions about PHP licensing, please    |
+   | contact core@php.net.                                                |
+   +----------------------------------------------------------------------+
+   | Author: Jim Winstead (jimw@php.net)                                  |
+   +----------------------------------------------------------------------+
+ */
+/* $Id$ */
+
+#ifndef _TMW_BASE64_H
+#define _TMW_BASE64_H
+
+extern unsigned char *php3_base64_encode(const unsigned char *, int, int *);
+extern unsigned char *php3_base64_decode(const unsigned char *, int, int *);
+
+#endif /* _TMW_BASE64_H */