Max Lv
8 years ago
committed by
GitHub
GitHub
25 changed files with 364 additions and 104 deletions
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6doc/shadowsocks-libev.asciidoc
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5doc/ss-local.asciidoc
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8doc/ss-redir.asciidoc
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5doc/ss-server.asciidoc
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5doc/ss-tunnel.asciidoc
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4m4/sodium.m4
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5src/Makefile.am
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16src/aead.c
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3src/aead.h
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106src/base64.c
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54src/base64.h
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2src/common.h
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139src/crypto.c
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22src/crypto.h
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2src/jconf.c
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1src/jconf.h
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16src/local.c
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2src/manager.c
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1src/manager.h
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16src/redir.c
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15src/server.c
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13src/stream.c
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2src/stream.h
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16src/tunnel.c
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4src/utils.c
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/* |
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* Copyright (c) 2006 Ryan Martell. (rdm4@martellventures.com) |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg 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 GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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|
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/** |
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* @file |
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* @brief Base64 encode/decode |
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* @author Ryan Martell <rdm4@martellventures.com> (with lots of Michael) |
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*/ |
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|
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#ifdef HAVE_CONFIG_H |
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#include "config.h" |
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#endif |
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#include <limits.h> |
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#include <stddef.h> |
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#include "base64.h" |
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/* ---------------- private code */ |
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static const uint8_t map2[] = |
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{ |
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0xff, 0xff, 0x3e, 0xff, 0xff, 0x34, 0x35, 0x36, |
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0x37, 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0xff, |
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x01, |
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0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, |
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0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10, 0x11, |
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0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, |
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0xff, 0xff, 0xff, 0xff, 0x3f, 0xff, 0x1a, 0x1b, |
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0x1c, 0x1d, 0x1e, 0x1f, 0x20, 0x21, 0x22, 0x23, |
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0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x2b, |
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0x2c, 0x2d, 0x2e, 0x2f, 0x30, 0x31, 0x32, 0x33 |
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}; |
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int base64_decode(uint8_t *out, const char *in, int out_size) |
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{ |
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int i, v; |
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uint8_t *dst = out; |
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v = 0; |
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for (i = 0; in[i] && in[i] != '='; i++) { |
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unsigned int index = in[i] - 43; |
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if (index >= sizeof(map2) || map2[index] == 0xff) |
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return -1; |
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v = (v << 6) + map2[index]; |
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if (i & 3) { |
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if (dst - out < out_size) { |
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*dst++ = v >> (6 - 2 * (i & 3)); |
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} |
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} |
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} |
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return dst - out; |
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} |
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|
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/***************************************************************************** |
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* b64_encode: Stolen from VLC's http.c. |
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* Simplified by Michael. |
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* Fixed edge cases and made it work from data (vs. strings) by Ryan. |
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*****************************************************************************/ |
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char *base64_encode(char *out, int out_size, const uint8_t *in, int in_size) |
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{ |
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static const char b64[] = |
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"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_"; |
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char *ret, *dst; |
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unsigned i_bits = 0; |
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int i_shift = 0; |
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int bytes_remaining = in_size; |
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|
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if (in_size >= UINT_MAX / 4 || |
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out_size < BASE64_SIZE(in_size)) |
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return NULL; |
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ret = dst = out; |
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while (bytes_remaining) { |
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i_bits = (i_bits << 8) + *in++; |
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bytes_remaining--; |
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i_shift += 8; |
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do { |
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*dst++ = b64[(i_bits << 6 >> i_shift) & 0x3f]; |
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i_shift -= 6; |
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} while (i_shift > 6 || (bytes_remaining == 0 && i_shift > 0)); |
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} |
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while ((dst - ret) & 3) |
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*dst++ = '='; |
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*dst = '\0'; |
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return ret; |
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} |
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@ -0,0 +1,54 @@ |
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/* |
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* Copyright (c) 2006 Ryan Martell. (rdm4@martellventures.com) |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg 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 GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#ifndef BASE64_H |
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#define BASE64_H |
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#include <stdint.h> |
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/** |
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* Decode a base64-encoded string. |
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* |
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* @param out buffer for decoded data |
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* @param in null-terminated input string |
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* @param out_size size in bytes of the out buffer, must be at |
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* least 3/4 of the length of in |
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* @return number of bytes written, or a negative value in case of |
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* invalid input |
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*/ |
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int base64_decode(uint8_t *out, const char *in, int out_size); |
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/** |
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* Encode data to base64 and null-terminate. |
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* |
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* @param out buffer for encoded data |
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* @param out_size size in bytes of the output buffer, must be at |
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* least BASE64_SIZE(in_size) |
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* @param in_size size in bytes of the 'in' buffer |
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* @return 'out' or NULL in case of error |
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*/ |
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char *base64_encode(char *out, int out_size, const uint8_t *in, int in_size); |
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/** |
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* Calculate the output size needed to base64-encode x bytes. |
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*/ |
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#define BASE64_SIZE(x) (((x)+2) / 3 * 4 + 1) |
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#endif /* BASE64_H */ |
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