diff options
| author | orivej <orivej@yandex-team.ru> | 2022-02-10 16:45:01 +0300 |
|---|---|---|
| committer | Daniil Cherednik <dcherednik@yandex-team.ru> | 2022-02-10 16:45:01 +0300 |
| commit | 2d37894b1b037cf24231090eda8589bbb44fb6fc (patch) | |
| tree | be835aa92c6248212e705f25388ebafcf84bc7a1 /contrib/tools/python3/src/Modules/binascii.c | |
| parent | 718c552901d703c502ccbefdfc3c9028d608b947 (diff) | |
| download | ydb-2d37894b1b037cf24231090eda8589bbb44fb6fc.tar.gz | |
Restoring authorship annotation for <orivej@yandex-team.ru>. Commit 2 of 2.
Diffstat (limited to 'contrib/tools/python3/src/Modules/binascii.c')
| -rw-r--r-- | contrib/tools/python3/src/Modules/binascii.c | 2874 |
1 files changed, 1437 insertions, 1437 deletions
diff --git a/contrib/tools/python3/src/Modules/binascii.c b/contrib/tools/python3/src/Modules/binascii.c index f32bd96623..1f3248b604 100644 --- a/contrib/tools/python3/src/Modules/binascii.c +++ b/contrib/tools/python3/src/Modules/binascii.c @@ -1,149 +1,149 @@ -/* -** Routines to represent binary data in ASCII and vice-versa -** -** This module currently supports the following encodings: -** uuencode: -** each line encodes 45 bytes (except possibly the last) -** First char encodes (binary) length, rest data -** each char encodes 6 bits, as follows: -** binary: 01234567 abcdefgh ijklmnop -** ascii: 012345 67abcd efghij klmnop -** ASCII encoding method is "excess-space": 000000 is encoded as ' ', etc. -** short binary data is zero-extended (so the bits are always in the -** right place), this does *not* reflect in the length. -** base64: -** Line breaks are insignificant, but lines are at most 76 chars -** each char encodes 6 bits, in similar order as uucode/hqx. Encoding -** is done via a table. -** Short binary data is filled (in ASCII) with '='. -** hqx: -** File starts with introductory text, real data starts and ends -** with colons. -** Data consists of three similar parts: info, datafork, resourcefork. -** Each part is protected (at the end) with a 16-bit crc -** The binary data is run-length encoded, and then ascii-fied: -** binary: 01234567 abcdefgh ijklmnop -** ascii: 012345 67abcd efghij klmnop -** ASCII encoding is table-driven, see the code. -** Short binary data results in the runt ascii-byte being output with -** the bits in the right place. -** -** While I was reading dozens of programs that encode or decode the formats -** here (documentation? hihi:-) I have formulated Jansen's Observation: -** -** Programs that encode binary data in ASCII are written in -** such a style that they are as unreadable as possible. Devices used -** include unnecessary global variables, burying important tables -** in unrelated sourcefiles, putting functions in include files, -** using seemingly-descriptive variable names for different purposes, -** calls to empty subroutines and a host of others. -** -** I have attempted to break with this tradition, but I guess that that -** does make the performance sub-optimal. Oh well, too bad... -** -** Jack Jansen, CWI, July 1995. -** -** Added support for quoted-printable encoding, based on rfc 1521 et al -** quoted-printable encoding specifies that non printable characters (anything -** below 32 and above 126) be encoded as =XX where XX is the hexadecimal value -** of the character. It also specifies some other behavior to enable 8bit data -** in a mail message with little difficulty (maximum line sizes, protecting -** some cases of whitespace, etc). -** -** Brandon Long, September 2001. -*/ - -#define PY_SSIZE_T_CLEAN - -#include "Python.h" -#include "pystrhex.h" -#ifdef USE_ZLIB_CRC32 -#include "zlib.h" -#endif - +/* +** Routines to represent binary data in ASCII and vice-versa +** +** This module currently supports the following encodings: +** uuencode: +** each line encodes 45 bytes (except possibly the last) +** First char encodes (binary) length, rest data +** each char encodes 6 bits, as follows: +** binary: 01234567 abcdefgh ijklmnop +** ascii: 012345 67abcd efghij klmnop +** ASCII encoding method is "excess-space": 000000 is encoded as ' ', etc. +** short binary data is zero-extended (so the bits are always in the +** right place), this does *not* reflect in the length. +** base64: +** Line breaks are insignificant, but lines are at most 76 chars +** each char encodes 6 bits, in similar order as uucode/hqx. Encoding +** is done via a table. +** Short binary data is filled (in ASCII) with '='. +** hqx: +** File starts with introductory text, real data starts and ends +** with colons. +** Data consists of three similar parts: info, datafork, resourcefork. +** Each part is protected (at the end) with a 16-bit crc +** The binary data is run-length encoded, and then ascii-fied: +** binary: 01234567 abcdefgh ijklmnop +** ascii: 012345 67abcd efghij klmnop +** ASCII encoding is table-driven, see the code. +** Short binary data results in the runt ascii-byte being output with +** the bits in the right place. +** +** While I was reading dozens of programs that encode or decode the formats +** here (documentation? hihi:-) I have formulated Jansen's Observation: +** +** Programs that encode binary data in ASCII are written in +** such a style that they are as unreadable as possible. Devices used +** include unnecessary global variables, burying important tables +** in unrelated sourcefiles, putting functions in include files, +** using seemingly-descriptive variable names for different purposes, +** calls to empty subroutines and a host of others. +** +** I have attempted to break with this tradition, but I guess that that +** does make the performance sub-optimal. Oh well, too bad... +** +** Jack Jansen, CWI, July 1995. +** +** Added support for quoted-printable encoding, based on rfc 1521 et al +** quoted-printable encoding specifies that non printable characters (anything +** below 32 and above 126) be encoded as =XX where XX is the hexadecimal value +** of the character. It also specifies some other behavior to enable 8bit data +** in a mail message with little difficulty (maximum line sizes, protecting +** some cases of whitespace, etc). +** +** Brandon Long, September 2001. +*/ + +#define PY_SSIZE_T_CLEAN + +#include "Python.h" +#include "pystrhex.h" +#ifdef USE_ZLIB_CRC32 +#include "zlib.h" +#endif + typedef struct binascii_state { PyObject *Error; PyObject *Incomplete; } binascii_state; - + static binascii_state * get_binascii_state(PyObject *module) { return (binascii_state *)PyModule_GetState(module); } -/* -** hqx lookup table, ascii->binary. -*/ - -#define RUNCHAR 0x90 - -#define DONE 0x7F -#define SKIP 0x7E -#define FAIL 0x7D - -static const unsigned char table_a2b_hqx[256] = { -/* ^@ ^A ^B ^C ^D ^E ^F ^G */ -/* 0*/ FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, -/* \b \t \n ^K ^L \r ^N ^O */ -/* 1*/ FAIL, FAIL, SKIP, FAIL, FAIL, SKIP, FAIL, FAIL, -/* ^P ^Q ^R ^S ^T ^U ^V ^W */ -/* 2*/ FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, -/* ^X ^Y ^Z ^[ ^\ ^] ^^ ^_ */ -/* 3*/ FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, -/* ! " # $ % & ' */ -/* 4*/ FAIL, 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, -/* ( ) * + , - . / */ -/* 5*/ 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, FAIL, FAIL, -/* 0 1 2 3 4 5 6 7 */ -/* 6*/ 0x0D, 0x0E, 0x0F, 0x10, 0x11, 0x12, 0x13, FAIL, -/* 8 9 : ; < = > ? */ -/* 7*/ 0x14, 0x15, DONE, FAIL, FAIL, FAIL, FAIL, FAIL, -/* @ A B C D E F G */ -/* 8*/ 0x16, 0x17, 0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, -/* H I J K L M N O */ -/* 9*/ 0x1E, 0x1F, 0x20, 0x21, 0x22, 0x23, 0x24, FAIL, -/* P Q R S T U V W */ -/*10*/ 0x25, 0x26, 0x27, 0x28, 0x29, 0x2A, 0x2B, FAIL, -/* X Y Z [ \ ] ^ _ */ -/*11*/ 0x2C, 0x2D, 0x2E, 0x2F, FAIL, FAIL, FAIL, FAIL, -/* ` a b c d e f g */ -/*12*/ 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, FAIL, -/* h i j k l m n o */ -/*13*/ 0x37, 0x38, 0x39, 0x3A, 0x3B, 0x3C, FAIL, FAIL, -/* p q r s t u v w */ -/*14*/ 0x3D, 0x3E, 0x3F, FAIL, FAIL, FAIL, FAIL, FAIL, -/* x y z { | } ~ ^? */ -/*15*/ FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, -/*16*/ FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, - FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, - FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, - FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, - FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, - FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, - FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, - FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, - FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, - FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, - FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, - FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, - FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, - FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, - FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, - FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, -}; - -static const unsigned char table_b2a_hqx[] = -"!\"#$%&'()*+,-012345689@ABCDEFGHIJKLMNPQRSTUVXYZ[`abcdefhijklmpqr"; - +/* +** hqx lookup table, ascii->binary. +*/ + +#define RUNCHAR 0x90 + +#define DONE 0x7F +#define SKIP 0x7E +#define FAIL 0x7D + +static const unsigned char table_a2b_hqx[256] = { +/* ^@ ^A ^B ^C ^D ^E ^F ^G */ +/* 0*/ FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, +/* \b \t \n ^K ^L \r ^N ^O */ +/* 1*/ FAIL, FAIL, SKIP, FAIL, FAIL, SKIP, FAIL, FAIL, +/* ^P ^Q ^R ^S ^T ^U ^V ^W */ +/* 2*/ FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, +/* ^X ^Y ^Z ^[ ^\ ^] ^^ ^_ */ +/* 3*/ FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, +/* ! " # $ % & ' */ +/* 4*/ FAIL, 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, +/* ( ) * + , - . / */ +/* 5*/ 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, FAIL, FAIL, +/* 0 1 2 3 4 5 6 7 */ +/* 6*/ 0x0D, 0x0E, 0x0F, 0x10, 0x11, 0x12, 0x13, FAIL, +/* 8 9 : ; < = > ? */ +/* 7*/ 0x14, 0x15, DONE, FAIL, FAIL, FAIL, FAIL, FAIL, +/* @ A B C D E F G */ +/* 8*/ 0x16, 0x17, 0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, +/* H I J K L M N O */ +/* 9*/ 0x1E, 0x1F, 0x20, 0x21, 0x22, 0x23, 0x24, FAIL, +/* P Q R S T U V W */ +/*10*/ 0x25, 0x26, 0x27, 0x28, 0x29, 0x2A, 0x2B, FAIL, +/* X Y Z [ \ ] ^ _ */ +/*11*/ 0x2C, 0x2D, 0x2E, 0x2F, FAIL, FAIL, FAIL, FAIL, +/* ` a b c d e f g */ +/*12*/ 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, FAIL, +/* h i j k l m n o */ +/*13*/ 0x37, 0x38, 0x39, 0x3A, 0x3B, 0x3C, FAIL, FAIL, +/* p q r s t u v w */ +/*14*/ 0x3D, 0x3E, 0x3F, FAIL, FAIL, FAIL, FAIL, FAIL, +/* x y z { | } ~ ^? */ +/*15*/ FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, +/*16*/ FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, + FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, + FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, + FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, + FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, + FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, + FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, + FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, + FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, + FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, + FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, + FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, + FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, + FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, + FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, + FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, +}; + +static const unsigned char table_b2a_hqx[] = +"!\"#$%&'()*+,-012345689@ABCDEFGHIJKLMNPQRSTUVXYZ[`abcdefhijklmpqr"; + static const unsigned char table_a2b_base64[] = { - -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, - -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, - -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,62, -1,-1,-1,63, - 52,53,54,55, 56,57,58,59, 60,61,-1,-1, -1, 0,-1,-1, /* Note PAD->0 */ - -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,10, 11,12,13,14, - 15,16,17,18, 19,20,21,22, 23,24,25,-1, -1,-1,-1,-1, - -1,26,27,28, 29,30,31,32, 33,34,35,36, 37,38,39,40, + -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, + -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, + -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,62, -1,-1,-1,63, + 52,53,54,55, 56,57,58,59, 60,61,-1,-1, -1, 0,-1,-1, /* Note PAD->0 */ + -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,10, 11,12,13,14, + 15,16,17,18, 19,20,21,22, 23,24,25,-1, -1,-1,-1,-1, + -1,26,27,28, 29,30,31,32, 33,34,35,36, 37,38,39,40, 41,42,43,44, 45,46,47,48, 49,50,51,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, @@ -154,333 +154,333 @@ static const unsigned char table_a2b_base64[] = { -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -}; - -#define BASE64_PAD '=' - -/* Max binary chunk size; limited only by available memory */ -#define BASE64_MAXBIN ((PY_SSIZE_T_MAX - 3) / 2) - -static const unsigned char table_b2a_base64[] = -"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"; - - - -static const unsigned short crctab_hqx[256] = { - 0x0000, 0x1021, 0x2042, 0x3063, 0x4084, 0x50a5, 0x60c6, 0x70e7, - 0x8108, 0x9129, 0xa14a, 0xb16b, 0xc18c, 0xd1ad, 0xe1ce, 0xf1ef, - 0x1231, 0x0210, 0x3273, 0x2252, 0x52b5, 0x4294, 0x72f7, 0x62d6, - 0x9339, 0x8318, 0xb37b, 0xa35a, 0xd3bd, 0xc39c, 0xf3ff, 0xe3de, - 0x2462, 0x3443, 0x0420, 0x1401, 0x64e6, 0x74c7, 0x44a4, 0x5485, - 0xa56a, 0xb54b, 0x8528, 0x9509, 0xe5ee, 0xf5cf, 0xc5ac, 0xd58d, - 0x3653, 0x2672, 0x1611, 0x0630, 0x76d7, 0x66f6, 0x5695, 0x46b4, - 0xb75b, 0xa77a, 0x9719, 0x8738, 0xf7df, 0xe7fe, 0xd79d, 0xc7bc, - 0x48c4, 0x58e5, 0x6886, 0x78a7, 0x0840, 0x1861, 0x2802, 0x3823, - 0xc9cc, 0xd9ed, 0xe98e, 0xf9af, 0x8948, 0x9969, 0xa90a, 0xb92b, - 0x5af5, 0x4ad4, 0x7ab7, 0x6a96, 0x1a71, 0x0a50, 0x3a33, 0x2a12, - 0xdbfd, 0xcbdc, 0xfbbf, 0xeb9e, 0x9b79, 0x8b58, 0xbb3b, 0xab1a, - 0x6ca6, 0x7c87, 0x4ce4, 0x5cc5, 0x2c22, 0x3c03, 0x0c60, 0x1c41, - 0xedae, 0xfd8f, 0xcdec, 0xddcd, 0xad2a, 0xbd0b, 0x8d68, 0x9d49, - 0x7e97, 0x6eb6, 0x5ed5, 0x4ef4, 0x3e13, 0x2e32, 0x1e51, 0x0e70, - 0xff9f, 0xefbe, 0xdfdd, 0xcffc, 0xbf1b, 0xaf3a, 0x9f59, 0x8f78, - 0x9188, 0x81a9, 0xb1ca, 0xa1eb, 0xd10c, 0xc12d, 0xf14e, 0xe16f, - 0x1080, 0x00a1, 0x30c2, 0x20e3, 0x5004, 0x4025, 0x7046, 0x6067, - 0x83b9, 0x9398, 0xa3fb, 0xb3da, 0xc33d, 0xd31c, 0xe37f, 0xf35e, - 0x02b1, 0x1290, 0x22f3, 0x32d2, 0x4235, 0x5214, 0x6277, 0x7256, - 0xb5ea, 0xa5cb, 0x95a8, 0x8589, 0xf56e, 0xe54f, 0xd52c, 0xc50d, - 0x34e2, 0x24c3, 0x14a0, 0x0481, 0x7466, 0x6447, 0x5424, 0x4405, - 0xa7db, 0xb7fa, 0x8799, 0x97b8, 0xe75f, 0xf77e, 0xc71d, 0xd73c, - 0x26d3, 0x36f2, 0x0691, 0x16b0, 0x6657, 0x7676, 0x4615, 0x5634, - 0xd94c, 0xc96d, 0xf90e, 0xe92f, 0x99c8, 0x89e9, 0xb98a, 0xa9ab, - 0x5844, 0x4865, 0x7806, 0x6827, 0x18c0, 0x08e1, 0x3882, 0x28a3, - 0xcb7d, 0xdb5c, 0xeb3f, 0xfb1e, 0x8bf9, 0x9bd8, 0xabbb, 0xbb9a, - 0x4a75, 0x5a54, 0x6a37, 0x7a16, 0x0af1, 0x1ad0, 0x2ab3, 0x3a92, - 0xfd2e, 0xed0f, 0xdd6c, 0xcd4d, 0xbdaa, 0xad8b, 0x9de8, 0x8dc9, - 0x7c26, 0x6c07, 0x5c64, 0x4c45, 0x3ca2, 0x2c83, 0x1ce0, 0x0cc1, - 0xef1f, 0xff3e, 0xcf5d, 0xdf7c, 0xaf9b, 0xbfba, 0x8fd9, 0x9ff8, - 0x6e17, 0x7e36, 0x4e55, 0x5e74, 0x2e93, 0x3eb2, 0x0ed1, 0x1ef0, -}; - -/*[clinic input] -module binascii -[clinic start generated code]*/ -/*[clinic end generated code: output=da39a3ee5e6b4b0d input=de89fb46bcaf3fec]*/ - -/*[python input] - -class ascii_buffer_converter(CConverter): - type = 'Py_buffer' - converter = 'ascii_buffer_converter' - impl_by_reference = True - c_default = "{NULL, NULL}" - - def cleanup(self): - name = self.name - return "".join(["if (", name, ".obj)\n PyBuffer_Release(&", name, ");\n"]) - -[python start generated code]*/ -/*[python end generated code: output=da39a3ee5e6b4b0d input=3eb7b63610da92cd]*/ - -static int -ascii_buffer_converter(PyObject *arg, Py_buffer *buf) -{ - if (arg == NULL) { - PyBuffer_Release(buf); - return 1; - } - if (PyUnicode_Check(arg)) { - if (PyUnicode_READY(arg) < 0) - return 0; - if (!PyUnicode_IS_ASCII(arg)) { - PyErr_SetString(PyExc_ValueError, - "string argument should contain only ASCII characters"); - return 0; - } - assert(PyUnicode_KIND(arg) == PyUnicode_1BYTE_KIND); - buf->buf = (void *) PyUnicode_1BYTE_DATA(arg); - buf->len = PyUnicode_GET_LENGTH(arg); - buf->obj = NULL; - return 1; - } - if (PyObject_GetBuffer(arg, buf, PyBUF_SIMPLE) != 0) { - PyErr_Format(PyExc_TypeError, - "argument should be bytes, buffer or ASCII string, " - "not '%.100s'", Py_TYPE(arg)->tp_name); - return 0; - } - if (!PyBuffer_IsContiguous(buf, 'C')) { - PyErr_Format(PyExc_TypeError, - "argument should be a contiguous buffer, " - "not '%.100s'", Py_TYPE(arg)->tp_name); - PyBuffer_Release(buf); - return 0; - } - return Py_CLEANUP_SUPPORTED; -} - -#include "clinic/binascii.c.h" - -/*[clinic input] -binascii.a2b_uu - - data: ascii_buffer - / - -Decode a line of uuencoded data. -[clinic start generated code]*/ - -static PyObject * -binascii_a2b_uu_impl(PyObject *module, Py_buffer *data) -/*[clinic end generated code: output=e027f8e0b0598742 input=7cafeaf73df63d1c]*/ -{ - const unsigned char *ascii_data; - unsigned char *bin_data; - int leftbits = 0; - unsigned char this_ch; - unsigned int leftchar = 0; - PyObject *rv; - Py_ssize_t ascii_len, bin_len; +}; + +#define BASE64_PAD '=' + +/* Max binary chunk size; limited only by available memory */ +#define BASE64_MAXBIN ((PY_SSIZE_T_MAX - 3) / 2) + +static const unsigned char table_b2a_base64[] = +"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"; + + + +static const unsigned short crctab_hqx[256] = { + 0x0000, 0x1021, 0x2042, 0x3063, 0x4084, 0x50a5, 0x60c6, 0x70e7, + 0x8108, 0x9129, 0xa14a, 0xb16b, 0xc18c, 0xd1ad, 0xe1ce, 0xf1ef, + 0x1231, 0x0210, 0x3273, 0x2252, 0x52b5, 0x4294, 0x72f7, 0x62d6, + 0x9339, 0x8318, 0xb37b, 0xa35a, 0xd3bd, 0xc39c, 0xf3ff, 0xe3de, + 0x2462, 0x3443, 0x0420, 0x1401, 0x64e6, 0x74c7, 0x44a4, 0x5485, + 0xa56a, 0xb54b, 0x8528, 0x9509, 0xe5ee, 0xf5cf, 0xc5ac, 0xd58d, + 0x3653, 0x2672, 0x1611, 0x0630, 0x76d7, 0x66f6, 0x5695, 0x46b4, + 0xb75b, 0xa77a, 0x9719, 0x8738, 0xf7df, 0xe7fe, 0xd79d, 0xc7bc, + 0x48c4, 0x58e5, 0x6886, 0x78a7, 0x0840, 0x1861, 0x2802, 0x3823, + 0xc9cc, 0xd9ed, 0xe98e, 0xf9af, 0x8948, 0x9969, 0xa90a, 0xb92b, + 0x5af5, 0x4ad4, 0x7ab7, 0x6a96, 0x1a71, 0x0a50, 0x3a33, 0x2a12, + 0xdbfd, 0xcbdc, 0xfbbf, 0xeb9e, 0x9b79, 0x8b58, 0xbb3b, 0xab1a, + 0x6ca6, 0x7c87, 0x4ce4, 0x5cc5, 0x2c22, 0x3c03, 0x0c60, 0x1c41, + 0xedae, 0xfd8f, 0xcdec, 0xddcd, 0xad2a, 0xbd0b, 0x8d68, 0x9d49, + 0x7e97, 0x6eb6, 0x5ed5, 0x4ef4, 0x3e13, 0x2e32, 0x1e51, 0x0e70, + 0xff9f, 0xefbe, 0xdfdd, 0xcffc, 0xbf1b, 0xaf3a, 0x9f59, 0x8f78, + 0x9188, 0x81a9, 0xb1ca, 0xa1eb, 0xd10c, 0xc12d, 0xf14e, 0xe16f, + 0x1080, 0x00a1, 0x30c2, 0x20e3, 0x5004, 0x4025, 0x7046, 0x6067, + 0x83b9, 0x9398, 0xa3fb, 0xb3da, 0xc33d, 0xd31c, 0xe37f, 0xf35e, + 0x02b1, 0x1290, 0x22f3, 0x32d2, 0x4235, 0x5214, 0x6277, 0x7256, + 0xb5ea, 0xa5cb, 0x95a8, 0x8589, 0xf56e, 0xe54f, 0xd52c, 0xc50d, + 0x34e2, 0x24c3, 0x14a0, 0x0481, 0x7466, 0x6447, 0x5424, 0x4405, + 0xa7db, 0xb7fa, 0x8799, 0x97b8, 0xe75f, 0xf77e, 0xc71d, 0xd73c, + 0x26d3, 0x36f2, 0x0691, 0x16b0, 0x6657, 0x7676, 0x4615, 0x5634, + 0xd94c, 0xc96d, 0xf90e, 0xe92f, 0x99c8, 0x89e9, 0xb98a, 0xa9ab, + 0x5844, 0x4865, 0x7806, 0x6827, 0x18c0, 0x08e1, 0x3882, 0x28a3, + 0xcb7d, 0xdb5c, 0xeb3f, 0xfb1e, 0x8bf9, 0x9bd8, 0xabbb, 0xbb9a, + 0x4a75, 0x5a54, 0x6a37, 0x7a16, 0x0af1, 0x1ad0, 0x2ab3, 0x3a92, + 0xfd2e, 0xed0f, 0xdd6c, 0xcd4d, 0xbdaa, 0xad8b, 0x9de8, 0x8dc9, + 0x7c26, 0x6c07, 0x5c64, 0x4c45, 0x3ca2, 0x2c83, 0x1ce0, 0x0cc1, + 0xef1f, 0xff3e, 0xcf5d, 0xdf7c, 0xaf9b, 0xbfba, 0x8fd9, 0x9ff8, + 0x6e17, 0x7e36, 0x4e55, 0x5e74, 0x2e93, 0x3eb2, 0x0ed1, 0x1ef0, +}; + +/*[clinic input] +module binascii +[clinic start generated code]*/ +/*[clinic end generated code: output=da39a3ee5e6b4b0d input=de89fb46bcaf3fec]*/ + +/*[python input] + +class ascii_buffer_converter(CConverter): + type = 'Py_buffer' + converter = 'ascii_buffer_converter' + impl_by_reference = True + c_default = "{NULL, NULL}" + + def cleanup(self): + name = self.name + return "".join(["if (", name, ".obj)\n PyBuffer_Release(&", name, ");\n"]) + +[python start generated code]*/ +/*[python end generated code: output=da39a3ee5e6b4b0d input=3eb7b63610da92cd]*/ + +static int +ascii_buffer_converter(PyObject *arg, Py_buffer *buf) +{ + if (arg == NULL) { + PyBuffer_Release(buf); + return 1; + } + if (PyUnicode_Check(arg)) { + if (PyUnicode_READY(arg) < 0) + return 0; + if (!PyUnicode_IS_ASCII(arg)) { + PyErr_SetString(PyExc_ValueError, + "string argument should contain only ASCII characters"); + return 0; + } + assert(PyUnicode_KIND(arg) == PyUnicode_1BYTE_KIND); + buf->buf = (void *) PyUnicode_1BYTE_DATA(arg); + buf->len = PyUnicode_GET_LENGTH(arg); + buf->obj = NULL; + return 1; + } + if (PyObject_GetBuffer(arg, buf, PyBUF_SIMPLE) != 0) { + PyErr_Format(PyExc_TypeError, + "argument should be bytes, buffer or ASCII string, " + "not '%.100s'", Py_TYPE(arg)->tp_name); + return 0; + } + if (!PyBuffer_IsContiguous(buf, 'C')) { + PyErr_Format(PyExc_TypeError, + "argument should be a contiguous buffer, " + "not '%.100s'", Py_TYPE(arg)->tp_name); + PyBuffer_Release(buf); + return 0; + } + return Py_CLEANUP_SUPPORTED; +} + +#include "clinic/binascii.c.h" + +/*[clinic input] +binascii.a2b_uu + + data: ascii_buffer + / + +Decode a line of uuencoded data. +[clinic start generated code]*/ + +static PyObject * +binascii_a2b_uu_impl(PyObject *module, Py_buffer *data) +/*[clinic end generated code: output=e027f8e0b0598742 input=7cafeaf73df63d1c]*/ +{ + const unsigned char *ascii_data; + unsigned char *bin_data; + int leftbits = 0; + unsigned char this_ch; + unsigned int leftchar = 0; + PyObject *rv; + Py_ssize_t ascii_len, bin_len; binascii_state *state; - - ascii_data = data->buf; - ascii_len = data->len; - - assert(ascii_len >= 0); - - /* First byte: binary data length (in bytes) */ - bin_len = (*ascii_data++ - ' ') & 077; - ascii_len--; - - /* Allocate the buffer */ - if ( (rv=PyBytes_FromStringAndSize(NULL, bin_len)) == NULL ) - return NULL; - bin_data = (unsigned char *)PyBytes_AS_STRING(rv); - - for( ; bin_len > 0 ; ascii_len--, ascii_data++ ) { - /* XXX is it really best to add NULs if there's no more data */ - this_ch = (ascii_len > 0) ? *ascii_data : 0; - if ( this_ch == '\n' || this_ch == '\r' || ascii_len <= 0) { - /* - ** Whitespace. Assume some spaces got eaten at - ** end-of-line. (We check this later) - */ - this_ch = 0; - } else { - /* Check the character for legality - ** The 64 in stead of the expected 63 is because - ** there are a few uuencodes out there that use - ** '`' as zero instead of space. - */ - if ( this_ch < ' ' || this_ch > (' ' + 64)) { + + ascii_data = data->buf; + ascii_len = data->len; + + assert(ascii_len >= 0); + + /* First byte: binary data length (in bytes) */ + bin_len = (*ascii_data++ - ' ') & 077; + ascii_len--; + + /* Allocate the buffer */ + if ( (rv=PyBytes_FromStringAndSize(NULL, bin_len)) == NULL ) + return NULL; + bin_data = (unsigned char *)PyBytes_AS_STRING(rv); + + for( ; bin_len > 0 ; ascii_len--, ascii_data++ ) { + /* XXX is it really best to add NULs if there's no more data */ + this_ch = (ascii_len > 0) ? *ascii_data : 0; + if ( this_ch == '\n' || this_ch == '\r' || ascii_len <= 0) { + /* + ** Whitespace. Assume some spaces got eaten at + ** end-of-line. (We check this later) + */ + this_ch = 0; + } else { + /* Check the character for legality + ** The 64 in stead of the expected 63 is because + ** there are a few uuencodes out there that use + ** '`' as zero instead of space. + */ + if ( this_ch < ' ' || this_ch > (' ' + 64)) { state = PyModule_GetState(module); if (state == NULL) { return NULL; } PyErr_SetString(state->Error, "Illegal char"); - Py_DECREF(rv); - return NULL; - } - this_ch = (this_ch - ' ') & 077; - } - /* - ** Shift it in on the low end, and see if there's - ** a byte ready for output. - */ - leftchar = (leftchar << 6) | (this_ch); - leftbits += 6; - if ( leftbits >= 8 ) { - leftbits -= 8; - *bin_data++ = (leftchar >> leftbits) & 0xff; - leftchar &= ((1 << leftbits) - 1); - bin_len--; - } - } - /* - ** Finally, check that if there's anything left on the line - ** that it's whitespace only. - */ - while( ascii_len-- > 0 ) { - this_ch = *ascii_data++; - /* Extra '`' may be written as padding in some cases */ - if ( this_ch != ' ' && this_ch != ' '+64 && - this_ch != '\n' && this_ch != '\r' ) { + Py_DECREF(rv); + return NULL; + } + this_ch = (this_ch - ' ') & 077; + } + /* + ** Shift it in on the low end, and see if there's + ** a byte ready for output. + */ + leftchar = (leftchar << 6) | (this_ch); + leftbits += 6; + if ( leftbits >= 8 ) { + leftbits -= 8; + *bin_data++ = (leftchar >> leftbits) & 0xff; + leftchar &= ((1 << leftbits) - 1); + bin_len--; + } + } + /* + ** Finally, check that if there's anything left on the line + ** that it's whitespace only. + */ + while( ascii_len-- > 0 ) { + this_ch = *ascii_data++; + /* Extra '`' may be written as padding in some cases */ + if ( this_ch != ' ' && this_ch != ' '+64 && + this_ch != '\n' && this_ch != '\r' ) { state = PyModule_GetState(module); if (state == NULL) { return NULL; } PyErr_SetString(state->Error, "Trailing garbage"); - Py_DECREF(rv); - return NULL; - } - } - return rv; -} - -/*[clinic input] -binascii.b2a_uu - - data: Py_buffer - / - * - backtick: bool(accept={int}) = False - -Uuencode line of data. -[clinic start generated code]*/ - -static PyObject * -binascii_b2a_uu_impl(PyObject *module, Py_buffer *data, int backtick) -/*[clinic end generated code: output=b1b99de62d9bbeb8 input=b26bc8d32b6ed2f6]*/ -{ - unsigned char *ascii_data; - const unsigned char *bin_data; - int leftbits = 0; - unsigned char this_ch; - unsigned int leftchar = 0; + Py_DECREF(rv); + return NULL; + } + } + return rv; +} + +/*[clinic input] +binascii.b2a_uu + + data: Py_buffer + / + * + backtick: bool(accept={int}) = False + +Uuencode line of data. +[clinic start generated code]*/ + +static PyObject * +binascii_b2a_uu_impl(PyObject *module, Py_buffer *data, int backtick) +/*[clinic end generated code: output=b1b99de62d9bbeb8 input=b26bc8d32b6ed2f6]*/ +{ + unsigned char *ascii_data; + const unsigned char *bin_data; + int leftbits = 0; + unsigned char this_ch; + unsigned int leftchar = 0; binascii_state *state; - Py_ssize_t bin_len, out_len; - _PyBytesWriter writer; - - _PyBytesWriter_Init(&writer); - bin_data = data->buf; - bin_len = data->len; - if ( bin_len > 45 ) { - /* The 45 is a limit that appears in all uuencode's */ + Py_ssize_t bin_len, out_len; + _PyBytesWriter writer; + + _PyBytesWriter_Init(&writer); + bin_data = data->buf; + bin_len = data->len; + if ( bin_len > 45 ) { + /* The 45 is a limit that appears in all uuencode's */ state = PyModule_GetState(module); if (state == NULL) { return NULL; } PyErr_SetString(state->Error, "At most 45 bytes at once"); - return NULL; - } - - /* We're lazy and allocate to much (fixed up later) */ - out_len = 2 + (bin_len + 2) / 3 * 4; - ascii_data = _PyBytesWriter_Alloc(&writer, out_len); - if (ascii_data == NULL) - return NULL; - - /* Store the length */ - if (backtick && !bin_len) - *ascii_data++ = '`'; - else - *ascii_data++ = ' ' + (unsigned char)bin_len; - - for( ; bin_len > 0 || leftbits != 0 ; bin_len--, bin_data++ ) { - /* Shift the data (or padding) into our buffer */ - if ( bin_len > 0 ) /* Data */ - leftchar = (leftchar << 8) | *bin_data; - else /* Padding */ - leftchar <<= 8; - leftbits += 8; - - /* See if there are 6-bit groups ready */ - while ( leftbits >= 6 ) { - this_ch = (leftchar >> (leftbits-6)) & 0x3f; - leftbits -= 6; - if (backtick && !this_ch) - *ascii_data++ = '`'; - else - *ascii_data++ = this_ch + ' '; - } - } - *ascii_data++ = '\n'; /* Append a courtesy newline */ - - return _PyBytesWriter_Finish(&writer, ascii_data); -} - -/*[clinic input] -binascii.a2b_base64 - - data: ascii_buffer - / - -Decode a line of base64 data. -[clinic start generated code]*/ - -static PyObject * -binascii_a2b_base64_impl(PyObject *module, Py_buffer *data) -/*[clinic end generated code: output=0628223f19fd3f9b input=5872acf6e1cac243]*/ -{ + return NULL; + } + + /* We're lazy and allocate to much (fixed up later) */ + out_len = 2 + (bin_len + 2) / 3 * 4; + ascii_data = _PyBytesWriter_Alloc(&writer, out_len); + if (ascii_data == NULL) + return NULL; + + /* Store the length */ + if (backtick && !bin_len) + *ascii_data++ = '`'; + else + *ascii_data++ = ' ' + (unsigned char)bin_len; + + for( ; bin_len > 0 || leftbits != 0 ; bin_len--, bin_data++ ) { + /* Shift the data (or padding) into our buffer */ + if ( bin_len > 0 ) /* Data */ + leftchar = (leftchar << 8) | *bin_data; + else /* Padding */ + leftchar <<= 8; + leftbits += 8; + + /* See if there are 6-bit groups ready */ + while ( leftbits >= 6 ) { + this_ch = (leftchar >> (leftbits-6)) & 0x3f; + leftbits -= 6; + if (backtick && !this_ch) + *ascii_data++ = '`'; + else + *ascii_data++ = this_ch + ' '; + } + } + *ascii_data++ = '\n'; /* Append a courtesy newline */ + + return _PyBytesWriter_Finish(&writer, ascii_data); +} + +/*[clinic input] +binascii.a2b_base64 + + data: ascii_buffer + / + +Decode a line of base64 data. +[clinic start generated code]*/ + +static PyObject * +binascii_a2b_base64_impl(PyObject *module, Py_buffer *data) +/*[clinic end generated code: output=0628223f19fd3f9b input=5872acf6e1cac243]*/ +{ assert(data->len >= 0); - + const unsigned char *ascii_data = data->buf; size_t ascii_len = data->len; - + /* Allocate the buffer */ Py_ssize_t bin_len = ((ascii_len+3)/4)*3; /* Upper bound, corrected later */ _PyBytesWriter writer; - _PyBytesWriter_Init(&writer); + _PyBytesWriter_Init(&writer); unsigned char *bin_data = _PyBytesWriter_Alloc(&writer, bin_len); - if (bin_data == NULL) - return NULL; + if (bin_data == NULL) + return NULL; unsigned char *bin_data_start = bin_data; - + int quad_pos = 0; unsigned char leftchar = 0; int pads = 0; for (size_t i = 0; i < ascii_len; i++) { unsigned char this_ch = ascii_data[i]; - - /* Check for pad sequences and ignore - ** the invalid ones. - */ - if (this_ch == BASE64_PAD) { + + /* Check for pad sequences and ignore + ** the invalid ones. + */ + if (this_ch == BASE64_PAD) { if (quad_pos >= 2 && quad_pos + ++pads >= 4) { - /* A pad sequence means no more input. - ** We've already interpreted the data - ** from the quad at this point. - */ + /* A pad sequence means no more input. + ** We've already interpreted the data + ** from the quad at this point. + */ goto done; - } + } continue; - } - + } + this_ch = table_a2b_base64[this_ch]; if (this_ch >= 64) { - continue; + continue; } pads = 0; - + switch (quad_pos) { case 0: quad_pos = 1; @@ -501,670 +501,670 @@ binascii_a2b_base64_impl(PyObject *module, Py_buffer *data) *bin_data++ = (leftchar << 6) | (this_ch); leftchar = 0; break; - } - } - + } + } + if (quad_pos != 0) { binascii_state *state = PyModule_GetState(module); if (state == NULL) { /* error already set, from PyModule_GetState */ } else if (quad_pos == 1) { - /* - ** There is exactly one extra valid, non-padding, base64 character. - ** This is an invalid length, as there is no possible input that - ** could encoded into such a base64 string. - */ + /* + ** There is exactly one extra valid, non-padding, base64 character. + ** This is an invalid length, as there is no possible input that + ** could encoded into such a base64 string. + */ PyErr_Format(state->Error, - "Invalid base64-encoded string: " + "Invalid base64-encoded string: " "number of data characters (%zd) cannot be 1 more " - "than a multiple of 4", - (bin_data - bin_data_start) / 3 * 4 + 1); - } else { + "than a multiple of 4", + (bin_data - bin_data_start) / 3 * 4 + 1); + } else { PyErr_SetString(state->Error, "Incorrect padding"); - } - _PyBytesWriter_Dealloc(&writer); - return NULL; - } - + } + _PyBytesWriter_Dealloc(&writer); + return NULL; + } + done: - return _PyBytesWriter_Finish(&writer, bin_data); -} - - -/*[clinic input] -binascii.b2a_base64 - - data: Py_buffer - / - * - newline: bool(accept={int}) = True - -Base64-code line of data. -[clinic start generated code]*/ - -static PyObject * -binascii_b2a_base64_impl(PyObject *module, Py_buffer *data, int newline) -/*[clinic end generated code: output=4ad62c8e8485d3b3 input=6083dac5777fa45d]*/ -{ - unsigned char *ascii_data; - const unsigned char *bin_data; - int leftbits = 0; - unsigned char this_ch; - unsigned int leftchar = 0; - Py_ssize_t bin_len, out_len; - _PyBytesWriter writer; + return _PyBytesWriter_Finish(&writer, bin_data); +} + + +/*[clinic input] +binascii.b2a_base64 + + data: Py_buffer + / + * + newline: bool(accept={int}) = True + +Base64-code line of data. +[clinic start generated code]*/ + +static PyObject * +binascii_b2a_base64_impl(PyObject *module, Py_buffer *data, int newline) +/*[clinic end generated code: output=4ad62c8e8485d3b3 input=6083dac5777fa45d]*/ +{ + unsigned char *ascii_data; + const unsigned char *bin_data; + int leftbits = 0; + unsigned char this_ch; + unsigned int leftchar = 0; + Py_ssize_t bin_len, out_len; + _PyBytesWriter writer; binascii_state *state; - - bin_data = data->buf; - bin_len = data->len; - _PyBytesWriter_Init(&writer); - - assert(bin_len >= 0); - - if ( bin_len > BASE64_MAXBIN ) { + + bin_data = data->buf; + bin_len = data->len; + _PyBytesWriter_Init(&writer); + + assert(bin_len >= 0); + + if ( bin_len > BASE64_MAXBIN ) { state = PyModule_GetState(module); if (state == NULL) { return NULL; } PyErr_SetString(state->Error, "Too much data for base64 line"); - return NULL; - } - - /* We're lazy and allocate too much (fixed up later). - "+2" leaves room for up to two pad characters. - Note that 'b' gets encoded as 'Yg==\n' (1 in, 5 out). */ - out_len = bin_len*2 + 2; - if (newline) - out_len++; - ascii_data = _PyBytesWriter_Alloc(&writer, out_len); - if (ascii_data == NULL) - return NULL; - - for( ; bin_len > 0 ; bin_len--, bin_data++ ) { - /* Shift the data into our buffer */ - leftchar = (leftchar << 8) | *bin_data; - leftbits += 8; - - /* See if there are 6-bit groups ready */ - while ( leftbits >= 6 ) { - this_ch = (leftchar >> (leftbits-6)) & 0x3f; - leftbits -= 6; - *ascii_data++ = table_b2a_base64[this_ch]; - } - } - if ( leftbits == 2 ) { - *ascii_data++ = table_b2a_base64[(leftchar&3) << 4]; - *ascii_data++ = BASE64_PAD; - *ascii_data++ = BASE64_PAD; - } else if ( leftbits == 4 ) { - *ascii_data++ = table_b2a_base64[(leftchar&0xf) << 2]; - *ascii_data++ = BASE64_PAD; - } - if (newline) - *ascii_data++ = '\n'; /* Append a courtesy newline */ - - return _PyBytesWriter_Finish(&writer, ascii_data); -} - -/*[clinic input] -binascii.a2b_hqx - - data: ascii_buffer - / - -Decode .hqx coding. -[clinic start generated code]*/ - -static PyObject * -binascii_a2b_hqx_impl(PyObject *module, Py_buffer *data) -/*[clinic end generated code: output=4d6d8c54d54ea1c1 input=0d914c680e0eed55]*/ -{ + return NULL; + } + + /* We're lazy and allocate too much (fixed up later). + "+2" leaves room for up to two pad characters. + Note that 'b' gets encoded as 'Yg==\n' (1 in, 5 out). */ + out_len = bin_len*2 + 2; + if (newline) + out_len++; + ascii_data = _PyBytesWriter_Alloc(&writer, out_len); + if (ascii_data == NULL) + return NULL; + + for( ; bin_len > 0 ; bin_len--, bin_data++ ) { + /* Shift the data into our buffer */ + leftchar = (leftchar << 8) | *bin_data; + leftbits += 8; + + /* See if there are 6-bit groups ready */ + while ( leftbits >= 6 ) { + this_ch = (leftchar >> (leftbits-6)) & 0x3f; + leftbits -= 6; + *ascii_data++ = table_b2a_base64[this_ch]; + } + } + if ( leftbits == 2 ) { + *ascii_data++ = table_b2a_base64[(leftchar&3) << 4]; + *ascii_data++ = BASE64_PAD; + *ascii_data++ = BASE64_PAD; + } else if ( leftbits == 4 ) { + *ascii_data++ = table_b2a_base64[(leftchar&0xf) << 2]; + *ascii_data++ = BASE64_PAD; + } + if (newline) + *ascii_data++ = '\n'; /* Append a courtesy newline */ + + return _PyBytesWriter_Finish(&writer, ascii_data); +} + +/*[clinic input] +binascii.a2b_hqx + + data: ascii_buffer + / + +Decode .hqx coding. +[clinic start generated code]*/ + +static PyObject * +binascii_a2b_hqx_impl(PyObject *module, Py_buffer *data) +/*[clinic end generated code: output=4d6d8c54d54ea1c1 input=0d914c680e0eed55]*/ +{ if (PyErr_WarnEx(PyExc_DeprecationWarning, "binascii.a2b_hqx() is deprecated", 1) < 0) { return NULL; } - const unsigned char *ascii_data; - unsigned char *bin_data; - int leftbits = 0; - unsigned char this_ch; - unsigned int leftchar = 0; - PyObject *res; - Py_ssize_t len; - int done = 0; - _PyBytesWriter writer; + const unsigned char *ascii_data; + unsigned char *bin_data; + int leftbits = 0; + unsigned char this_ch; + unsigned int leftchar = 0; + PyObject *res; + Py_ssize_t len; + int done = 0; + _PyBytesWriter writer; binascii_state *state; - - ascii_data = data->buf; - len = data->len; - _PyBytesWriter_Init(&writer); - - assert(len >= 0); - - if (len > PY_SSIZE_T_MAX - 2) - return PyErr_NoMemory(); - - /* Allocate a string that is too big (fixed later) - Add two to the initial length to prevent interning which - would preclude subsequent resizing. */ - bin_data = _PyBytesWriter_Alloc(&writer, len + 2); - if (bin_data == NULL) - return NULL; - - for( ; len > 0 ; len--, ascii_data++ ) { - /* Get the byte and look it up */ - this_ch = table_a2b_hqx[*ascii_data]; - if ( this_ch == SKIP ) - continue; - if ( this_ch == FAIL ) { + + ascii_data = data->buf; + len = data->len; + _PyBytesWriter_Init(&writer); + + assert(len >= 0); + + if (len > PY_SSIZE_T_MAX - 2) + return PyErr_NoMemory(); + + /* Allocate a string that is too big (fixed later) + Add two to the initial length to prevent interning which + would preclude subsequent resizing. */ + bin_data = _PyBytesWriter_Alloc(&writer, len + 2); + if (bin_data == NULL) + return NULL; + + for( ; len > 0 ; len--, ascii_data++ ) { + /* Get the byte and look it up */ + this_ch = table_a2b_hqx[*ascii_data]; + if ( this_ch == SKIP ) + continue; + if ( this_ch == FAIL ) { state = PyModule_GetState(module); if (state == NULL) { return NULL; } PyErr_SetString(state->Error, "Illegal char"); - _PyBytesWriter_Dealloc(&writer); - return NULL; - } - if ( this_ch == DONE ) { - /* The terminating colon */ - done = 1; - break; - } - - /* Shift it into the buffer and see if any bytes are ready */ - leftchar = (leftchar << 6) | (this_ch); - leftbits += 6; - if ( leftbits >= 8 ) { - leftbits -= 8; - *bin_data++ = (leftchar >> leftbits) & 0xff; - leftchar &= ((1 << leftbits) - 1); - } - } - - if ( leftbits && !done ) { + _PyBytesWriter_Dealloc(&writer); + return NULL; + } + if ( this_ch == DONE ) { + /* The terminating colon */ + done = 1; + break; + } + + /* Shift it into the buffer and see if any bytes are ready */ + leftchar = (leftchar << 6) | (this_ch); + leftbits += 6; + if ( leftbits >= 8 ) { + leftbits -= 8; + *bin_data++ = (leftchar >> leftbits) & 0xff; + leftchar &= ((1 << leftbits) - 1); + } + } + + if ( leftbits && !done ) { state = PyModule_GetState(module); if (state == NULL) { return NULL; } PyErr_SetString(state->Incomplete, - "String has incomplete number of bytes"); - _PyBytesWriter_Dealloc(&writer); - return NULL; - } - - res = _PyBytesWriter_Finish(&writer, bin_data); - if (res == NULL) - return NULL; - return Py_BuildValue("Ni", res, done); -} - - -/*[clinic input] -binascii.rlecode_hqx - - data: Py_buffer - / - -Binhex RLE-code binary data. -[clinic start generated code]*/ - -static PyObject * -binascii_rlecode_hqx_impl(PyObject *module, Py_buffer *data) -/*[clinic end generated code: output=393d79338f5f5629 input=e1f1712447a82b09]*/ -{ + "String has incomplete number of bytes"); + _PyBytesWriter_Dealloc(&writer); + return NULL; + } + + res = _PyBytesWriter_Finish(&writer, bin_data); + if (res == NULL) + return NULL; + return Py_BuildValue("Ni", res, done); +} + + +/*[clinic input] +binascii.rlecode_hqx + + data: Py_buffer + / + +Binhex RLE-code binary data. +[clinic start generated code]*/ + +static PyObject * +binascii_rlecode_hqx_impl(PyObject *module, Py_buffer *data) +/*[clinic end generated code: output=393d79338f5f5629 input=e1f1712447a82b09]*/ +{ if (PyErr_WarnEx(PyExc_DeprecationWarning, "binascii.rlecode_hqx() is deprecated", 1) < 0) { return NULL; } - const unsigned char *in_data; - unsigned char *out_data; - unsigned char ch; - Py_ssize_t in, inend, len; - _PyBytesWriter writer; - - _PyBytesWriter_Init(&writer); - in_data = data->buf; - len = data->len; - - assert(len >= 0); - - if (len > PY_SSIZE_T_MAX / 2 - 2) - return PyErr_NoMemory(); - - /* Worst case: output is twice as big as input (fixed later) */ - out_data = _PyBytesWriter_Alloc(&writer, len * 2 + 2); - if (out_data == NULL) - return NULL; - - for( in=0; in<len; in++) { - ch = in_data[in]; - if ( ch == RUNCHAR ) { - /* RUNCHAR. Escape it. */ - *out_data++ = RUNCHAR; - *out_data++ = 0; - } else { - /* Check how many following are the same */ - for(inend=in+1; - inend<len && in_data[inend] == ch && - inend < in+255; - inend++) ; - if ( inend - in > 3 ) { - /* More than 3 in a row. Output RLE. */ - *out_data++ = ch; - *out_data++ = RUNCHAR; - *out_data++ = (unsigned char) (inend-in); - in = inend-1; - } else { - /* Less than 3. Output the byte itself */ - *out_data++ = ch; - } - } - } - - return _PyBytesWriter_Finish(&writer, out_data); -} - - -/*[clinic input] -binascii.b2a_hqx - - data: Py_buffer - / - -Encode .hqx data. -[clinic start generated code]*/ - -static PyObject * -binascii_b2a_hqx_impl(PyObject *module, Py_buffer *data) -/*[clinic end generated code: output=d0aa5a704bc9f7de input=9596ebe019fe12ba]*/ -{ + const unsigned char *in_data; + unsigned char *out_data; + unsigned char ch; + Py_ssize_t in, inend, len; + _PyBytesWriter writer; + + _PyBytesWriter_Init(&writer); + in_data = data->buf; + len = data->len; + + assert(len >= 0); + + if (len > PY_SSIZE_T_MAX / 2 - 2) + return PyErr_NoMemory(); + + /* Worst case: output is twice as big as input (fixed later) */ + out_data = _PyBytesWriter_Alloc(&writer, len * 2 + 2); + if (out_data == NULL) + return NULL; + + for( in=0; in<len; in++) { + ch = in_data[in]; + if ( ch == RUNCHAR ) { + /* RUNCHAR. Escape it. */ + *out_data++ = RUNCHAR; + *out_data++ = 0; + } else { + /* Check how many following are the same */ + for(inend=in+1; + inend<len && in_data[inend] == ch && + inend < in+255; + inend++) ; + if ( inend - in > 3 ) { + /* More than 3 in a row. Output RLE. */ + *out_data++ = ch; + *out_data++ = RUNCHAR; + *out_data++ = (unsigned char) (inend-in); + in = inend-1; + } else { + /* Less than 3. Output the byte itself */ + *out_data++ = ch; + } + } + } + + return _PyBytesWriter_Finish(&writer, out_data); +} + + +/*[clinic input] +binascii.b2a_hqx + + data: Py_buffer + / + +Encode .hqx data. +[clinic start generated code]*/ + +static PyObject * +binascii_b2a_hqx_impl(PyObject *module, Py_buffer *data) +/*[clinic end generated code: output=d0aa5a704bc9f7de input=9596ebe019fe12ba]*/ +{ if (PyErr_WarnEx(PyExc_DeprecationWarning, "binascii.b2a_hqx() is deprecated", 1) < 0) { return NULL; } - unsigned char *ascii_data; - const unsigned char *bin_data; - int leftbits = 0; - unsigned char this_ch; - unsigned int leftchar = 0; - Py_ssize_t len; - _PyBytesWriter writer; - - bin_data = data->buf; - len = data->len; - _PyBytesWriter_Init(&writer); - - assert(len >= 0); - - if (len > PY_SSIZE_T_MAX / 2 - 2) - return PyErr_NoMemory(); - - /* Allocate a buffer that is at least large enough */ - ascii_data = _PyBytesWriter_Alloc(&writer, len * 2 + 2); - if (ascii_data == NULL) - return NULL; - - for( ; len > 0 ; len--, bin_data++ ) { - /* Shift into our buffer, and output any 6bits ready */ - leftchar = (leftchar << 8) | *bin_data; - leftbits += 8; - while ( leftbits >= 6 ) { - this_ch = (leftchar >> (leftbits-6)) & 0x3f; - leftbits -= 6; - *ascii_data++ = table_b2a_hqx[this_ch]; - } - } - /* Output a possible runt byte */ - if ( leftbits ) { - leftchar <<= (6-leftbits); - *ascii_data++ = table_b2a_hqx[leftchar & 0x3f]; - } - - return _PyBytesWriter_Finish(&writer, ascii_data); -} - - -/*[clinic input] -binascii.rledecode_hqx - - data: Py_buffer - / - -Decode hexbin RLE-coded string. -[clinic start generated code]*/ - -static PyObject * -binascii_rledecode_hqx_impl(PyObject *module, Py_buffer *data) -/*[clinic end generated code: output=9826619565de1c6c input=54cdd49fc014402c]*/ -{ + unsigned char *ascii_data; + const unsigned char *bin_data; + int leftbits = 0; + unsigned char this_ch; + unsigned int leftchar = 0; + Py_ssize_t len; + _PyBytesWriter writer; + + bin_data = data->buf; + len = data->len; + _PyBytesWriter_Init(&writer); + + assert(len >= 0); + + if (len > PY_SSIZE_T_MAX / 2 - 2) + return PyErr_NoMemory(); + + /* Allocate a buffer that is at least large enough */ + ascii_data = _PyBytesWriter_Alloc(&writer, len * 2 + 2); + if (ascii_data == NULL) + return NULL; + + for( ; len > 0 ; len--, bin_data++ ) { + /* Shift into our buffer, and output any 6bits ready */ + leftchar = (leftchar << 8) | *bin_data; + leftbits += 8; + while ( leftbits >= 6 ) { + this_ch = (leftchar >> (leftbits-6)) & 0x3f; + leftbits -= 6; + *ascii_data++ = table_b2a_hqx[this_ch]; + } + } + /* Output a possible runt byte */ + if ( leftbits ) { + leftchar <<= (6-leftbits); + *ascii_data++ = table_b2a_hqx[leftchar & 0x3f]; + } + + return _PyBytesWriter_Finish(&writer, ascii_data); +} + + +/*[clinic input] +binascii.rledecode_hqx + + data: Py_buffer + / + +Decode hexbin RLE-coded string. +[clinic start generated code]*/ + +static PyObject * +binascii_rledecode_hqx_impl(PyObject *module, Py_buffer *data) +/*[clinic end generated code: output=9826619565de1c6c input=54cdd49fc014402c]*/ +{ if (PyErr_WarnEx(PyExc_DeprecationWarning, "binascii.rledecode_hqx() is deprecated", 1) < 0) { return NULL; } - const unsigned char *in_data; - unsigned char *out_data; - unsigned char in_byte, in_repeat; - Py_ssize_t in_len; - _PyBytesWriter writer; - - in_data = data->buf; - in_len = data->len; - _PyBytesWriter_Init(&writer); + const unsigned char *in_data; + unsigned char *out_data; + unsigned char in_byte, in_repeat; + Py_ssize_t in_len; + _PyBytesWriter writer; + + in_data = data->buf; + in_len = data->len; + _PyBytesWriter_Init(&writer); binascii_state *state; - - assert(in_len >= 0); - - /* Empty string is a special case */ - if ( in_len == 0 ) - return PyBytes_FromStringAndSize("", 0); - else if (in_len > PY_SSIZE_T_MAX / 2) - return PyErr_NoMemory(); - - /* Allocate a buffer of reasonable size. Resized when needed */ - out_data = _PyBytesWriter_Alloc(&writer, in_len); - if (out_data == NULL) - return NULL; - - /* Use overallocation */ - writer.overallocate = 1; - - /* - ** We need two macros here to get/put bytes and handle - ** end-of-buffer for input and output strings. - */ -#define INBYTE(b) \ - do { \ - if ( --in_len < 0 ) { \ + + assert(in_len >= 0); + + /* Empty string is a special case */ + if ( in_len == 0 ) + return PyBytes_FromStringAndSize("", 0); + else if (in_len > PY_SSIZE_T_MAX / 2) + return PyErr_NoMemory(); + + /* Allocate a buffer of reasonable size. Resized when needed */ + out_data = _PyBytesWriter_Alloc(&writer, in_len); + if (out_data == NULL) + return NULL; + + /* Use overallocation */ + writer.overallocate = 1; + + /* + ** We need two macros here to get/put bytes and handle + ** end-of-buffer for input and output strings. + */ +#define INBYTE(b) \ + do { \ + if ( --in_len < 0 ) { \ state = PyModule_GetState(module); \ if (state == NULL) { \ return NULL; \ } \ PyErr_SetString(state->Incomplete, ""); \ - goto error; \ - } \ - b = *in_data++; \ - } while(0) - - /* - ** Handle first byte separately (since we have to get angry - ** in case of an orphaned RLE code). - */ - INBYTE(in_byte); - - if (in_byte == RUNCHAR) { - INBYTE(in_repeat); - /* only 1 byte will be written, but 2 bytes were preallocated: - subtract 1 byte to prevent overallocation */ - writer.min_size--; - - if (in_repeat != 0) { - /* Note Error, not Incomplete (which is at the end - ** of the string only). This is a programmer error. - */ + goto error; \ + } \ + b = *in_data++; \ + } while(0) + + /* + ** Handle first byte separately (since we have to get angry + ** in case of an orphaned RLE code). + */ + INBYTE(in_byte); + + if (in_byte == RUNCHAR) { + INBYTE(in_repeat); + /* only 1 byte will be written, but 2 bytes were preallocated: + subtract 1 byte to prevent overallocation */ + writer.min_size--; + + if (in_repeat != 0) { + /* Note Error, not Incomplete (which is at the end + ** of the string only). This is a programmer error. + */ state = PyModule_GetState(module); if (state == NULL) { return NULL; } PyErr_SetString(state->Error, "Orphaned RLE code at start"); - goto error; - } - *out_data++ = RUNCHAR; - } else { - *out_data++ = in_byte; - } - - while( in_len > 0 ) { - INBYTE(in_byte); - - if (in_byte == RUNCHAR) { - INBYTE(in_repeat); - /* only 1 byte will be written, but 2 bytes were preallocated: - subtract 1 byte to prevent overallocation */ - writer.min_size--; - - if ( in_repeat == 0 ) { - /* Just an escaped RUNCHAR value */ - *out_data++ = RUNCHAR; - } else { - /* Pick up value and output a sequence of it */ - in_byte = out_data[-1]; - - /* enlarge the buffer if needed */ - if (in_repeat > 1) { - /* -1 because we already preallocated 1 byte */ - out_data = _PyBytesWriter_Prepare(&writer, out_data, - in_repeat - 1); - if (out_data == NULL) - goto error; - } - - while ( --in_repeat > 0 ) - *out_data++ = in_byte; - } - } else { - /* Normal byte */ - *out_data++ = in_byte; - } - } - return _PyBytesWriter_Finish(&writer, out_data); - -error: - _PyBytesWriter_Dealloc(&writer); - return NULL; -} - - -/*[clinic input] + goto error; + } + *out_data++ = RUNCHAR; + } else { + *out_data++ = in_byte; + } + + while( in_len > 0 ) { + INBYTE(in_byte); + + if (in_byte == RUNCHAR) { + INBYTE(in_repeat); + /* only 1 byte will be written, but 2 bytes were preallocated: + subtract 1 byte to prevent overallocation */ + writer.min_size--; + + if ( in_repeat == 0 ) { + /* Just an escaped RUNCHAR value */ + *out_data++ = RUNCHAR; + } else { + /* Pick up value and output a sequence of it */ + in_byte = out_data[-1]; + + /* enlarge the buffer if needed */ + if (in_repeat > 1) { + /* -1 because we already preallocated 1 byte */ + out_data = _PyBytesWriter_Prepare(&writer, out_data, + in_repeat - 1); + if (out_data == NULL) + goto error; + } + + while ( --in_repeat > 0 ) + *out_data++ = in_byte; + } + } else { + /* Normal byte */ + *out_data++ = in_byte; + } + } + return _PyBytesWriter_Finish(&writer, out_data); + +error: + _PyBytesWriter_Dealloc(&writer); + return NULL; +} + + +/*[clinic input] binascii.crc_hqx - - data: Py_buffer - crc: unsigned_int(bitwise=True) - / - -Compute CRC-CCITT incrementally. -[clinic start generated code]*/ - + + data: Py_buffer + crc: unsigned_int(bitwise=True) + / + +Compute CRC-CCITT incrementally. +[clinic start generated code]*/ + static PyObject * -binascii_crc_hqx_impl(PyObject *module, Py_buffer *data, unsigned int crc) +binascii_crc_hqx_impl(PyObject *module, Py_buffer *data, unsigned int crc) /*[clinic end generated code: output=2fde213d0f547a98 input=56237755370a951c]*/ -{ - const unsigned char *bin_data; - Py_ssize_t len; - - crc &= 0xffff; - bin_data = data->buf; - len = data->len; - - while(len-- > 0) { - crc = ((crc<<8)&0xff00) ^ crctab_hqx[(crc>>8)^*bin_data++]; - } - +{ + const unsigned char *bin_data; + Py_ssize_t len; + + crc &= 0xffff; + bin_data = data->buf; + len = data->len; + + while(len-- > 0) { + crc = ((crc<<8)&0xff00) ^ crctab_hqx[(crc>>8)^*bin_data++]; + } + return PyLong_FromUnsignedLong(crc); -} - -#ifndef USE_ZLIB_CRC32 -/* Crc - 32 BIT ANSI X3.66 CRC checksum files - Also known as: ISO 3307 -**********************************************************************| -* *| -* Demonstration program to compute the 32-bit CRC used as the frame *| -* check sequence in ADCCP (ANSI X3.66, also known as FIPS PUB 71 *| -* and FED-STD-1003, the U.S. versions of CCITT's X.25 link-level *| -* protocol). The 32-bit FCS was added via the Federal Register, *| -* 1 June 1982, p.23798. I presume but don't know for certain that *| -* this polynomial is or will be included in CCITT V.41, which *| -* defines the 16-bit CRC (often called CRC-CCITT) polynomial. FIPS *| -* PUB 78 says that the 32-bit FCS reduces otherwise undetected *| -* errors by a factor of 10^-5 over 16-bit FCS. *| -* *| -**********************************************************************| - - Copyright (C) 1986 Gary S. Brown. You may use this program, or - code or tables extracted from it, as desired without restriction. - - First, the polynomial itself and its table of feedback terms. The - polynomial is - X^32+X^26+X^23+X^22+X^16+X^12+X^11+X^10+X^8+X^7+X^5+X^4+X^2+X^1+X^0 - Note that we take it "backwards" and put the highest-order term in - the lowest-order bit. The X^32 term is "implied"; the LSB is the - X^31 term, etc. The X^0 term (usually shown as "+1") results in - the MSB being 1. - - Note that the usual hardware shift register implementation, which - is what we're using (we're merely optimizing it by doing eight-bit - chunks at a time) shifts bits into the lowest-order term. In our - implementation, that means shifting towards the right. Why do we - do it this way? Because the calculated CRC must be transmitted in - order from highest-order term to lowest-order term. UARTs transmit - characters in order from LSB to MSB. By storing the CRC this way, - we hand it to the UART in the order low-byte to high-byte; the UART - sends each low-bit to hight-bit; and the result is transmission bit - by bit from highest- to lowest-order term without requiring any bit - shuffling on our part. Reception works similarly. - - The feedback terms table consists of 256, 32-bit entries. Notes: - - 1. The table can be generated at runtime if desired; code to do so - is shown later. It might not be obvious, but the feedback - terms simply represent the results of eight shift/xor opera- - tions for all combinations of data and CRC register values. - - 2. The CRC accumulation logic is the same for all CRC polynomials, - be they sixteen or thirty-two bits wide. You simply choose the - appropriate table. Alternatively, because the table can be - generated at runtime, you can start by generating the table for - the polynomial in question and use exactly the same "updcrc", - if your application needn't simultaneously handle two CRC - polynomials. (Note, however, that XMODEM is strange.) - - 3. For 16-bit CRCs, the table entries need be only 16 bits wide; - of course, 32-bit entries work OK if the high 16 bits are zero. - - 4. The values must be right-shifted by eight bits by the "updcrc" - logic; the shift must be unsigned (bring in zeroes). On some - hardware you could probably optimize the shift in assembler by - using byte-swap instructions. -********************************************************************/ - -static const unsigned int crc_32_tab[256] = { -0x00000000U, 0x77073096U, 0xee0e612cU, 0x990951baU, 0x076dc419U, -0x706af48fU, 0xe963a535U, 0x9e6495a3U, 0x0edb8832U, 0x79dcb8a4U, -0xe0d5e91eU, 0x97d2d988U, 0x09b64c2bU, 0x7eb17cbdU, 0xe7b82d07U, -0x90bf1d91U, 0x1db71064U, 0x6ab020f2U, 0xf3b97148U, 0x84be41deU, -0x1adad47dU, 0x6ddde4ebU, 0xf4d4b551U, 0x83d385c7U, 0x136c9856U, -0x646ba8c0U, 0xfd62f97aU, 0x8a65c9ecU, 0x14015c4fU, 0x63066cd9U, -0xfa0f3d63U, 0x8d080df5U, 0x3b6e20c8U, 0x4c69105eU, 0xd56041e4U, -0xa2677172U, 0x3c03e4d1U, 0x4b04d447U, 0xd20d85fdU, 0xa50ab56bU, -0x35b5a8faU, 0x42b2986cU, 0xdbbbc9d6U, 0xacbcf940U, 0x32d86ce3U, -0x45df5c75U, 0xdcd60dcfU, 0xabd13d59U, 0x26d930acU, 0x51de003aU, -0xc8d75180U, 0xbfd06116U, 0x21b4f4b5U, 0x56b3c423U, 0xcfba9599U, -0xb8bda50fU, 0x2802b89eU, 0x5f058808U, 0xc60cd9b2U, 0xb10be924U, -0x2f6f7c87U, 0x58684c11U, 0xc1611dabU, 0xb6662d3dU, 0x76dc4190U, -0x01db7106U, 0x98d220bcU, 0xefd5102aU, 0x71b18589U, 0x06b6b51fU, -0x9fbfe4a5U, 0xe8b8d433U, 0x7807c9a2U, 0x0f00f934U, 0x9609a88eU, -0xe10e9818U, 0x7f6a0dbbU, 0x086d3d2dU, 0x91646c97U, 0xe6635c01U, -0x6b6b51f4U, 0x1c6c6162U, 0x856530d8U, 0xf262004eU, 0x6c0695edU, -0x1b01a57bU, 0x8208f4c1U, 0xf50fc457U, 0x65b0d9c6U, 0x12b7e950U, -0x8bbeb8eaU, 0xfcb9887cU, 0x62dd1ddfU, 0x15da2d49U, 0x8cd37cf3U, -0xfbd44c65U, 0x4db26158U, 0x3ab551ceU, 0xa3bc0074U, 0xd4bb30e2U, -0x4adfa541U, 0x3dd895d7U, 0xa4d1c46dU, 0xd3d6f4fbU, 0x4369e96aU, -0x346ed9fcU, 0xad678846U, 0xda60b8d0U, 0x44042d73U, 0x33031de5U, -0xaa0a4c5fU, 0xdd0d7cc9U, 0x5005713cU, 0x270241aaU, 0xbe0b1010U, -0xc90c2086U, 0x5768b525U, 0x206f85b3U, 0xb966d409U, 0xce61e49fU, -0x5edef90eU, 0x29d9c998U, 0xb0d09822U, 0xc7d7a8b4U, 0x59b33d17U, -0x2eb40d81U, 0xb7bd5c3bU, 0xc0ba6cadU, 0xedb88320U, 0x9abfb3b6U, -0x03b6e20cU, 0x74b1d29aU, 0xead54739U, 0x9dd277afU, 0x04db2615U, -0x73dc1683U, 0xe3630b12U, 0x94643b84U, 0x0d6d6a3eU, 0x7a6a5aa8U, -0xe40ecf0bU, 0x9309ff9dU, 0x0a00ae27U, 0x7d079eb1U, 0xf00f9344U, -0x8708a3d2U, 0x1e01f268U, 0x6906c2feU, 0xf762575dU, 0x806567cbU, -0x196c3671U, 0x6e6b06e7U, 0xfed41b76U, 0x89d32be0U, 0x10da7a5aU, -0x67dd4accU, 0xf9b9df6fU, 0x8ebeeff9U, 0x17b7be43U, 0x60b08ed5U, -0xd6d6a3e8U, 0xa1d1937eU, 0x38d8c2c4U, 0x4fdff252U, 0xd1bb67f1U, -0xa6bc5767U, 0x3fb506ddU, 0x48b2364bU, 0xd80d2bdaU, 0xaf0a1b4cU, -0x36034af6U, 0x41047a60U, 0xdf60efc3U, 0xa867df55U, 0x316e8eefU, -0x4669be79U, 0xcb61b38cU, 0xbc66831aU, 0x256fd2a0U, 0x5268e236U, -0xcc0c7795U, 0xbb0b4703U, 0x220216b9U, 0x5505262fU, 0xc5ba3bbeU, -0xb2bd0b28U, 0x2bb45a92U, 0x5cb36a04U, 0xc2d7ffa7U, 0xb5d0cf31U, -0x2cd99e8bU, 0x5bdeae1dU, 0x9b64c2b0U, 0xec63f226U, 0x756aa39cU, -0x026d930aU, 0x9c0906a9U, 0xeb0e363fU, 0x72076785U, 0x05005713U, -0x95bf4a82U, 0xe2b87a14U, 0x7bb12baeU, 0x0cb61b38U, 0x92d28e9bU, -0xe5d5be0dU, 0x7cdcefb7U, 0x0bdbdf21U, 0x86d3d2d4U, 0xf1d4e242U, -0x68ddb3f8U, 0x1fda836eU, 0x81be16cdU, 0xf6b9265bU, 0x6fb077e1U, -0x18b74777U, 0x88085ae6U, 0xff0f6a70U, 0x66063bcaU, 0x11010b5cU, -0x8f659effU, 0xf862ae69U, 0x616bffd3U, 0x166ccf45U, 0xa00ae278U, -0xd70dd2eeU, 0x4e048354U, 0x3903b3c2U, 0xa7672661U, 0xd06016f7U, -0x4969474dU, 0x3e6e77dbU, 0xaed16a4aU, 0xd9d65adcU, 0x40df0b66U, -0x37d83bf0U, 0xa9bcae53U, 0xdebb9ec5U, 0x47b2cf7fU, 0x30b5ffe9U, -0xbdbdf21cU, 0xcabac28aU, 0x53b39330U, 0x24b4a3a6U, 0xbad03605U, -0xcdd70693U, 0x54de5729U, 0x23d967bfU, 0xb3667a2eU, 0xc4614ab8U, -0x5d681b02U, 0x2a6f2b94U, 0xb40bbe37U, 0xc30c8ea1U, 0x5a05df1bU, -0x2d02ef8dU -}; -#endif /* USE_ZLIB_CRC32 */ - -/*[clinic input] -binascii.crc32 -> unsigned_int - - data: Py_buffer - crc: unsigned_int(bitwise=True) = 0 - / - -Compute CRC-32 incrementally. -[clinic start generated code]*/ - -static unsigned int -binascii_crc32_impl(PyObject *module, Py_buffer *data, unsigned int crc) -/*[clinic end generated code: output=52cf59056a78593b input=bbe340bc99d25aa8]*/ - -#ifdef USE_ZLIB_CRC32 -/* This was taken from zlibmodule.c PyZlib_crc32 (but is PY_SSIZE_T_CLEAN) */ -{ - const Byte *buf; - Py_ssize_t len; - int signed_val; - - buf = (Byte*)data->buf; - len = data->len; - signed_val = crc32(crc, buf, len); - return (unsigned int)signed_val & 0xffffffffU; -} -#else /* USE_ZLIB_CRC32 */ -{ /* By Jim Ahlstrom; All rights transferred to CNRI */ - const unsigned char *bin_data; - Py_ssize_t len; - unsigned int result; - - bin_data = data->buf; - len = data->len; - - crc = ~ crc; - while (len-- > 0) { - crc = crc_32_tab[(crc ^ *bin_data++) & 0xff] ^ (crc >> 8); - /* Note: (crc >> 8) MUST zero fill on left */ - } - - result = (crc ^ 0xFFFFFFFF); - return result & 0xffffffff; -} -#endif /* USE_ZLIB_CRC32 */ - -/*[clinic input] -binascii.b2a_hex - - data: Py_buffer +} + +#ifndef USE_ZLIB_CRC32 +/* Crc - 32 BIT ANSI X3.66 CRC checksum files + Also known as: ISO 3307 +**********************************************************************| +* *| +* Demonstration program to compute the 32-bit CRC used as the frame *| +* check sequence in ADCCP (ANSI X3.66, also known as FIPS PUB 71 *| +* and FED-STD-1003, the U.S. versions of CCITT's X.25 link-level *| +* protocol). The 32-bit FCS was added via the Federal Register, *| +* 1 June 1982, p.23798. I presume but don't know for certain that *| +* this polynomial is or will be included in CCITT V.41, which *| +* defines the 16-bit CRC (often called CRC-CCITT) polynomial. FIPS *| +* PUB 78 says that the 32-bit FCS reduces otherwise undetected *| +* errors by a factor of 10^-5 over 16-bit FCS. *| +* *| +**********************************************************************| + + Copyright (C) 1986 Gary S. Brown. You may use this program, or + code or tables extracted from it, as desired without restriction. + + First, the polynomial itself and its table of feedback terms. The + polynomial is + X^32+X^26+X^23+X^22+X^16+X^12+X^11+X^10+X^8+X^7+X^5+X^4+X^2+X^1+X^0 + Note that we take it "backwards" and put the highest-order term in + the lowest-order bit. The X^32 term is "implied"; the LSB is the + X^31 term, etc. The X^0 term (usually shown as "+1") results in + the MSB being 1. + + Note that the usual hardware shift register implementation, which + is what we're using (we're merely optimizing it by doing eight-bit + chunks at a time) shifts bits into the lowest-order term. In our + implementation, that means shifting towards the right. Why do we + do it this way? Because the calculated CRC must be transmitted in + order from highest-order term to lowest-order term. UARTs transmit + characters in order from LSB to MSB. By storing the CRC this way, + we hand it to the UART in the order low-byte to high-byte; the UART + sends each low-bit to hight-bit; and the result is transmission bit + by bit from highest- to lowest-order term without requiring any bit + shuffling on our part. Reception works similarly. + + The feedback terms table consists of 256, 32-bit entries. Notes: + + 1. The table can be generated at runtime if desired; code to do so + is shown later. It might not be obvious, but the feedback + terms simply represent the results of eight shift/xor opera- + tions for all combinations of data and CRC register values. + + 2. The CRC accumulation logic is the same for all CRC polynomials, + be they sixteen or thirty-two bits wide. You simply choose the + appropriate table. Alternatively, because the table can be + generated at runtime, you can start by generating the table for + the polynomial in question and use exactly the same "updcrc", + if your application needn't simultaneously handle two CRC + polynomials. (Note, however, that XMODEM is strange.) + + 3. For 16-bit CRCs, the table entries need be only 16 bits wide; + of course, 32-bit entries work OK if the high 16 bits are zero. + + 4. The values must be right-shifted by eight bits by the "updcrc" + logic; the shift must be unsigned (bring in zeroes). On some + hardware you could probably optimize the shift in assembler by + using byte-swap instructions. +********************************************************************/ + +static const unsigned int crc_32_tab[256] = { +0x00000000U, 0x77073096U, 0xee0e612cU, 0x990951baU, 0x076dc419U, +0x706af48fU, 0xe963a535U, 0x9e6495a3U, 0x0edb8832U, 0x79dcb8a4U, +0xe0d5e91eU, 0x97d2d988U, 0x09b64c2bU, 0x7eb17cbdU, 0xe7b82d07U, +0x90bf1d91U, 0x1db71064U, 0x6ab020f2U, 0xf3b97148U, 0x84be41deU, +0x1adad47dU, 0x6ddde4ebU, 0xf4d4b551U, 0x83d385c7U, 0x136c9856U, +0x646ba8c0U, 0xfd62f97aU, 0x8a65c9ecU, 0x14015c4fU, 0x63066cd9U, +0xfa0f3d63U, 0x8d080df5U, 0x3b6e20c8U, 0x4c69105eU, 0xd56041e4U, +0xa2677172U, 0x3c03e4d1U, 0x4b04d447U, 0xd20d85fdU, 0xa50ab56bU, +0x35b5a8faU, 0x42b2986cU, 0xdbbbc9d6U, 0xacbcf940U, 0x32d86ce3U, +0x45df5c75U, 0xdcd60dcfU, 0xabd13d59U, 0x26d930acU, 0x51de003aU, +0xc8d75180U, 0xbfd06116U, 0x21b4f4b5U, 0x56b3c423U, 0xcfba9599U, +0xb8bda50fU, 0x2802b89eU, 0x5f058808U, 0xc60cd9b2U, 0xb10be924U, +0x2f6f7c87U, 0x58684c11U, 0xc1611dabU, 0xb6662d3dU, 0x76dc4190U, +0x01db7106U, 0x98d220bcU, 0xefd5102aU, 0x71b18589U, 0x06b6b51fU, +0x9fbfe4a5U, 0xe8b8d433U, 0x7807c9a2U, 0x0f00f934U, 0x9609a88eU, +0xe10e9818U, 0x7f6a0dbbU, 0x086d3d2dU, 0x91646c97U, 0xe6635c01U, +0x6b6b51f4U, 0x1c6c6162U, 0x856530d8U, 0xf262004eU, 0x6c0695edU, +0x1b01a57bU, 0x8208f4c1U, 0xf50fc457U, 0x65b0d9c6U, 0x12b7e950U, +0x8bbeb8eaU, 0xfcb9887cU, 0x62dd1ddfU, 0x15da2d49U, 0x8cd37cf3U, +0xfbd44c65U, 0x4db26158U, 0x3ab551ceU, 0xa3bc0074U, 0xd4bb30e2U, +0x4adfa541U, 0x3dd895d7U, 0xa4d1c46dU, 0xd3d6f4fbU, 0x4369e96aU, +0x346ed9fcU, 0xad678846U, 0xda60b8d0U, 0x44042d73U, 0x33031de5U, +0xaa0a4c5fU, 0xdd0d7cc9U, 0x5005713cU, 0x270241aaU, 0xbe0b1010U, +0xc90c2086U, 0x5768b525U, 0x206f85b3U, 0xb966d409U, 0xce61e49fU, +0x5edef90eU, 0x29d9c998U, 0xb0d09822U, 0xc7d7a8b4U, 0x59b33d17U, +0x2eb40d81U, 0xb7bd5c3bU, 0xc0ba6cadU, 0xedb88320U, 0x9abfb3b6U, +0x03b6e20cU, 0x74b1d29aU, 0xead54739U, 0x9dd277afU, 0x04db2615U, +0x73dc1683U, 0xe3630b12U, 0x94643b84U, 0x0d6d6a3eU, 0x7a6a5aa8U, +0xe40ecf0bU, 0x9309ff9dU, 0x0a00ae27U, 0x7d079eb1U, 0xf00f9344U, +0x8708a3d2U, 0x1e01f268U, 0x6906c2feU, 0xf762575dU, 0x806567cbU, +0x196c3671U, 0x6e6b06e7U, 0xfed41b76U, 0x89d32be0U, 0x10da7a5aU, +0x67dd4accU, 0xf9b9df6fU, 0x8ebeeff9U, 0x17b7be43U, 0x60b08ed5U, +0xd6d6a3e8U, 0xa1d1937eU, 0x38d8c2c4U, 0x4fdff252U, 0xd1bb67f1U, +0xa6bc5767U, 0x3fb506ddU, 0x48b2364bU, 0xd80d2bdaU, 0xaf0a1b4cU, +0x36034af6U, 0x41047a60U, 0xdf60efc3U, 0xa867df55U, 0x316e8eefU, +0x4669be79U, 0xcb61b38cU, 0xbc66831aU, 0x256fd2a0U, 0x5268e236U, +0xcc0c7795U, 0xbb0b4703U, 0x220216b9U, 0x5505262fU, 0xc5ba3bbeU, +0xb2bd0b28U, 0x2bb45a92U, 0x5cb36a04U, 0xc2d7ffa7U, 0xb5d0cf31U, +0x2cd99e8bU, 0x5bdeae1dU, 0x9b64c2b0U, 0xec63f226U, 0x756aa39cU, +0x026d930aU, 0x9c0906a9U, 0xeb0e363fU, 0x72076785U, 0x05005713U, +0x95bf4a82U, 0xe2b87a14U, 0x7bb12baeU, 0x0cb61b38U, 0x92d28e9bU, +0xe5d5be0dU, 0x7cdcefb7U, 0x0bdbdf21U, 0x86d3d2d4U, 0xf1d4e242U, +0x68ddb3f8U, 0x1fda836eU, 0x81be16cdU, 0xf6b9265bU, 0x6fb077e1U, +0x18b74777U, 0x88085ae6U, 0xff0f6a70U, 0x66063bcaU, 0x11010b5cU, +0x8f659effU, 0xf862ae69U, 0x616bffd3U, 0x166ccf45U, 0xa00ae278U, +0xd70dd2eeU, 0x4e048354U, 0x3903b3c2U, 0xa7672661U, 0xd06016f7U, +0x4969474dU, 0x3e6e77dbU, 0xaed16a4aU, 0xd9d65adcU, 0x40df0b66U, +0x37d83bf0U, 0xa9bcae53U, 0xdebb9ec5U, 0x47b2cf7fU, 0x30b5ffe9U, +0xbdbdf21cU, 0xcabac28aU, 0x53b39330U, 0x24b4a3a6U, 0xbad03605U, +0xcdd70693U, 0x54de5729U, 0x23d967bfU, 0xb3667a2eU, 0xc4614ab8U, +0x5d681b02U, 0x2a6f2b94U, 0xb40bbe37U, 0xc30c8ea1U, 0x5a05df1bU, +0x2d02ef8dU +}; +#endif /* USE_ZLIB_CRC32 */ + +/*[clinic input] +binascii.crc32 -> unsigned_int + + data: Py_buffer + crc: unsigned_int(bitwise=True) = 0 + / + +Compute CRC-32 incrementally. +[clinic start generated code]*/ + +static unsigned int +binascii_crc32_impl(PyObject *module, Py_buffer *data, unsigned int crc) +/*[clinic end generated code: output=52cf59056a78593b input=bbe340bc99d25aa8]*/ + +#ifdef USE_ZLIB_CRC32 +/* This was taken from zlibmodule.c PyZlib_crc32 (but is PY_SSIZE_T_CLEAN) */ +{ + const Byte *buf; + Py_ssize_t len; + int signed_val; + + buf = (Byte*)data->buf; + len = data->len; + signed_val = crc32(crc, buf, len); + return (unsigned int)signed_val & 0xffffffffU; +} +#else /* USE_ZLIB_CRC32 */ +{ /* By Jim Ahlstrom; All rights transferred to CNRI */ + const unsigned char *bin_data; + Py_ssize_t len; + unsigned int result; + + bin_data = data->buf; + len = data->len; + + crc = ~ crc; + while (len-- > 0) { + crc = crc_32_tab[(crc ^ *bin_data++) & 0xff] ^ (crc >> 8); + /* Note: (crc >> 8) MUST zero fill on left */ + } + + result = (crc ^ 0xFFFFFFFF); + return result & 0xffffffff; +} +#endif /* USE_ZLIB_CRC32 */ + +/*[clinic input] +binascii.b2a_hex + + data: Py_buffer sep: object = NULL An optional single character or byte to separate hex bytes. bytes_per_sep: int = 1 How many bytes between separators. Positive values count from the right, negative values count from the left. - -Hexadecimal representation of binary data. - -The return value is a bytes object. This function is also -available as "hexlify()". + +Hexadecimal representation of binary data. + +The return value is a bytes object. This function is also +available as "hexlify()". Example: >>> binascii.b2a_hex(b'\xb9\x01\xef') @@ -1173,82 +1173,82 @@ b'b901ef' b'b9:01:ef' >>> binascii.b2a_hex(b'\xb9\x01\xef', b'_', 2) b'b9_01ef' -[clinic start generated code]*/ - -static PyObject * +[clinic start generated code]*/ + +static PyObject * binascii_b2a_hex_impl(PyObject *module, Py_buffer *data, PyObject *sep, int bytes_per_sep) /*[clinic end generated code: output=a26937946a81d2c7 input=ec0ade6ba2e43543]*/ -{ +{ return _Py_strhex_bytes_with_sep((const char *)data->buf, data->len, sep, bytes_per_sep); -} - -/*[clinic input] -binascii.hexlify = binascii.b2a_hex - -Hexadecimal representation of binary data. - +} + +/*[clinic input] +binascii.hexlify = binascii.b2a_hex + +Hexadecimal representation of binary data. + The return value is a bytes object. This function is also available as "b2a_hex()". -[clinic start generated code]*/ - -static PyObject * +[clinic start generated code]*/ + +static PyObject * binascii_hexlify_impl(PyObject *module, Py_buffer *data, PyObject *sep, int bytes_per_sep) /*[clinic end generated code: output=d12aa1b001b15199 input=bc317bd4e241f76b]*/ -{ +{ return _Py_strhex_bytes_with_sep((const char *)data->buf, data->len, sep, bytes_per_sep); -} - -/*[clinic input] -binascii.a2b_hex - - hexstr: ascii_buffer - / - -Binary data of hexadecimal representation. - -hexstr must contain an even number of hex digits (upper or lower case). -This function is also available as "unhexlify()". -[clinic start generated code]*/ - -static PyObject * -binascii_a2b_hex_impl(PyObject *module, Py_buffer *hexstr) -/*[clinic end generated code: output=0cc1a139af0eeecb input=9e1e7f2f94db24fd]*/ -{ - const char* argbuf; - Py_ssize_t arglen; - PyObject *retval; - char* retbuf; - Py_ssize_t i, j; +} + +/*[clinic input] +binascii.a2b_hex + + hexstr: ascii_buffer + / + +Binary data of hexadecimal representation. + +hexstr must contain an even number of hex digits (upper or lower case). +This function is also available as "unhexlify()". +[clinic start generated code]*/ + +static PyObject * +binascii_a2b_hex_impl(PyObject *module, Py_buffer *hexstr) +/*[clinic end generated code: output=0cc1a139af0eeecb input=9e1e7f2f94db24fd]*/ +{ + const char* argbuf; + Py_ssize_t arglen; + PyObject *retval; + char* retbuf; + Py_ssize_t i, j; binascii_state *state; - - argbuf = hexstr->buf; - arglen = hexstr->len; - - assert(arglen >= 0); - - /* XXX What should we do about strings with an odd length? Should - * we add an implicit leading zero, or a trailing zero? For now, - * raise an exception. - */ - if (arglen % 2) { + + argbuf = hexstr->buf; + arglen = hexstr->len; + + assert(arglen >= 0); + + /* XXX What should we do about strings with an odd length? Should + * we add an implicit leading zero, or a trailing zero? For now, + * raise an exception. + */ + if (arglen % 2) { state = PyModule_GetState(module); if (state == NULL) { return NULL; } PyErr_SetString(state->Error, "Odd-length string"); - return NULL; - } - - retval = PyBytes_FromStringAndSize(NULL, (arglen/2)); - if (!retval) - return NULL; - retbuf = PyBytes_AS_STRING(retval); - - for (i=j=0; i < arglen; i += 2) { + return NULL; + } + + retval = PyBytes_FromStringAndSize(NULL, (arglen/2)); + if (!retval) + return NULL; + retbuf = PyBytes_AS_STRING(retval); + + for (i=j=0; i < arglen; i += 2) { unsigned int top = _PyLong_DigitValue[Py_CHARMASK(argbuf[i])]; unsigned int bot = _PyLong_DigitValue[Py_CHARMASK(argbuf[i+1])]; if (top >= 16 || bot >= 16) { @@ -1257,354 +1257,354 @@ binascii_a2b_hex_impl(PyObject *module, Py_buffer *hexstr) return NULL; } PyErr_SetString(state->Error, - "Non-hexadecimal digit found"); - goto finally; - } - retbuf[j++] = (top << 4) + bot; - } - return retval; - - finally: - Py_DECREF(retval); - return NULL; -} - -/*[clinic input] -binascii.unhexlify = binascii.a2b_hex - -Binary data of hexadecimal representation. - -hexstr must contain an even number of hex digits (upper or lower case). -[clinic start generated code]*/ - -static PyObject * -binascii_unhexlify_impl(PyObject *module, Py_buffer *hexstr) -/*[clinic end generated code: output=51a64c06c79629e3 input=dd8c012725f462da]*/ -{ - return binascii_a2b_hex_impl(module, hexstr); -} - -#define MAXLINESIZE 76 - - -/*[clinic input] -binascii.a2b_qp - - data: ascii_buffer - header: bool(accept={int}) = False - -Decode a string of qp-encoded data. -[clinic start generated code]*/ - -static PyObject * -binascii_a2b_qp_impl(PyObject *module, Py_buffer *data, int header) -/*[clinic end generated code: output=e99f7846cfb9bc53 input=bf6766fea76cce8f]*/ -{ - Py_ssize_t in, out; - char ch; - const unsigned char *ascii_data; - unsigned char *odata; - Py_ssize_t datalen = 0; - PyObject *rv; - - ascii_data = data->buf; - datalen = data->len; - - /* We allocate the output same size as input, this is overkill. - */ + "Non-hexadecimal digit found"); + goto finally; + } + retbuf[j++] = (top << 4) + bot; + } + return retval; + + finally: + Py_DECREF(retval); + return NULL; +} + +/*[clinic input] +binascii.unhexlify = binascii.a2b_hex + +Binary data of hexadecimal representation. + +hexstr must contain an even number of hex digits (upper or lower case). +[clinic start generated code]*/ + +static PyObject * +binascii_unhexlify_impl(PyObject *module, Py_buffer *hexstr) +/*[clinic end generated code: output=51a64c06c79629e3 input=dd8c012725f462da]*/ +{ + return binascii_a2b_hex_impl(module, hexstr); +} + +#define MAXLINESIZE 76 + + +/*[clinic input] +binascii.a2b_qp + + data: ascii_buffer + header: bool(accept={int}) = False + +Decode a string of qp-encoded data. +[clinic start generated code]*/ + +static PyObject * +binascii_a2b_qp_impl(PyObject *module, Py_buffer *data, int header) +/*[clinic end generated code: output=e99f7846cfb9bc53 input=bf6766fea76cce8f]*/ +{ + Py_ssize_t in, out; + char ch; + const unsigned char *ascii_data; + unsigned char *odata; + Py_ssize_t datalen = 0; + PyObject *rv; + + ascii_data = data->buf; + datalen = data->len; + + /* We allocate the output same size as input, this is overkill. + */ odata = (unsigned char *) PyMem_Calloc(1, datalen); - if (odata == NULL) { - PyErr_NoMemory(); - return NULL; - } - - in = out = 0; - while (in < datalen) { - if (ascii_data[in] == '=') { - in++; - if (in >= datalen) break; - /* Soft line breaks */ - if ((ascii_data[in] == '\n') || (ascii_data[in] == '\r')) { - if (ascii_data[in] != '\n') { - while (in < datalen && ascii_data[in] != '\n') in++; - } - if (in < datalen) in++; - } - else if (ascii_data[in] == '=') { - /* broken case from broken python qp */ - odata[out++] = '='; - in++; - } - else if ((in + 1 < datalen) && - ((ascii_data[in] >= 'A' && ascii_data[in] <= 'F') || - (ascii_data[in] >= 'a' && ascii_data[in] <= 'f') || - (ascii_data[in] >= '0' && ascii_data[in] <= '9')) && - ((ascii_data[in+1] >= 'A' && ascii_data[in+1] <= 'F') || - (ascii_data[in+1] >= 'a' && ascii_data[in+1] <= 'f') || - (ascii_data[in+1] >= '0' && ascii_data[in+1] <= '9'))) { - /* hexval */ + if (odata == NULL) { + PyErr_NoMemory(); + return NULL; + } + + in = out = 0; + while (in < datalen) { + if (ascii_data[in] == '=') { + in++; + if (in >= datalen) break; + /* Soft line breaks */ + if ((ascii_data[in] == '\n') || (ascii_data[in] == '\r')) { + if (ascii_data[in] != '\n') { + while (in < datalen && ascii_data[in] != '\n') in++; + } + if (in < datalen) in++; + } + else if (ascii_data[in] == '=') { + /* broken case from broken python qp */ + odata[out++] = '='; + in++; + } + else if ((in + 1 < datalen) && + ((ascii_data[in] >= 'A' && ascii_data[in] <= 'F') || + (ascii_data[in] >= 'a' && ascii_data[in] <= 'f') || + (ascii_data[in] >= '0' && ascii_data[in] <= '9')) && + ((ascii_data[in+1] >= 'A' && ascii_data[in+1] <= 'F') || + (ascii_data[in+1] >= 'a' && ascii_data[in+1] <= 'f') || + (ascii_data[in+1] >= '0' && ascii_data[in+1] <= '9'))) { + /* hexval */ ch = _PyLong_DigitValue[ascii_data[in]] << 4; - in++; + in++; ch |= _PyLong_DigitValue[ascii_data[in]]; - in++; - odata[out++] = ch; - } - else { - odata[out++] = '='; - } - } - else if (header && ascii_data[in] == '_') { - odata[out++] = ' '; - in++; - } - else { - odata[out] = ascii_data[in]; - in++; - out++; - } - } - if ((rv = PyBytes_FromStringAndSize((char *)odata, out)) == NULL) { - PyMem_Free(odata); - return NULL; - } - PyMem_Free(odata); - return rv; -} - -static int -to_hex (unsigned char ch, unsigned char *s) -{ - unsigned int uvalue = ch; - - s[1] = "0123456789ABCDEF"[uvalue % 16]; - uvalue = (uvalue / 16); - s[0] = "0123456789ABCDEF"[uvalue % 16]; - return 0; -} - -/* XXX: This is ridiculously complicated to be backward compatible - * (mostly) with the quopri module. It doesn't re-create the quopri - * module bug where text ending in CRLF has the CR encoded */ - -/*[clinic input] -binascii.b2a_qp - - data: Py_buffer - quotetabs: bool(accept={int}) = False - istext: bool(accept={int}) = True - header: bool(accept={int}) = False - -Encode a string using quoted-printable encoding. - -On encoding, when istext is set, newlines are not encoded, and white -space at end of lines is. When istext is not set, \r and \n (CR/LF) -are both encoded. When quotetabs is set, space and tabs are encoded. -[clinic start generated code]*/ - -static PyObject * -binascii_b2a_qp_impl(PyObject *module, Py_buffer *data, int quotetabs, - int istext, int header) -/*[clinic end generated code: output=e9884472ebb1a94c input=21fb7eea4a184ba6]*/ -{ - Py_ssize_t in, out; - const unsigned char *databuf; - unsigned char *odata; - Py_ssize_t datalen = 0, odatalen = 0; - PyObject *rv; - unsigned int linelen = 0; - unsigned char ch; - int crlf = 0; - const unsigned char *p; - - databuf = data->buf; - datalen = data->len; - - /* See if this string is using CRLF line ends */ - /* XXX: this function has the side effect of converting all of - * the end of lines to be the same depending on this detection - * here */ - p = (const unsigned char *) memchr(databuf, '\n', datalen); - if ((p != NULL) && (p > databuf) && (*(p-1) == '\r')) - crlf = 1; - - /* First, scan to see how many characters need to be encoded */ - in = 0; - while (in < datalen) { - Py_ssize_t delta = 0; - if ((databuf[in] > 126) || - (databuf[in] == '=') || - (header && databuf[in] == '_') || - ((databuf[in] == '.') && (linelen == 0) && - (in + 1 == datalen || databuf[in+1] == '\n' || - databuf[in+1] == '\r' || databuf[in+1] == 0)) || - (!istext && ((databuf[in] == '\r') || (databuf[in] == '\n'))) || - ((databuf[in] == '\t' || databuf[in] == ' ') && (in + 1 == datalen)) || - ((databuf[in] < 33) && - (databuf[in] != '\r') && (databuf[in] != '\n') && - (quotetabs || ((databuf[in] != '\t') && (databuf[in] != ' '))))) - { - if ((linelen + 3) >= MAXLINESIZE) { - linelen = 0; - if (crlf) - delta += 3; - else - delta += 2; - } - linelen += 3; - delta += 3; - in++; - } - else { - if (istext && - ((databuf[in] == '\n') || - ((in+1 < datalen) && (databuf[in] == '\r') && - (databuf[in+1] == '\n')))) - { - linelen = 0; - /* Protect against whitespace on end of line */ - if (in && ((databuf[in-1] == ' ') || (databuf[in-1] == '\t'))) - delta += 2; - if (crlf) - delta += 2; - else - delta += 1; - if (databuf[in] == '\r') - in += 2; - else - in++; - } - else { - if ((in + 1 != datalen) && - (databuf[in+1] != '\n') && - (linelen + 1) >= MAXLINESIZE) { - linelen = 0; - if (crlf) - delta += 3; - else - delta += 2; - } - linelen++; - delta++; - in++; - } - } - if (PY_SSIZE_T_MAX - delta < odatalen) { - PyErr_NoMemory(); - return NULL; - } - odatalen += delta; - } - - /* We allocate the output same size as input, this is overkill. - */ + in++; + odata[out++] = ch; + } + else { + odata[out++] = '='; + } + } + else if (header && ascii_data[in] == '_') { + odata[out++] = ' '; + in++; + } + else { + odata[out] = ascii_data[in]; + in++; + out++; + } + } + if ((rv = PyBytes_FromStringAndSize((char *)odata, out)) == NULL) { + PyMem_Free(odata); + return NULL; + } + PyMem_Free(odata); + return rv; +} + +static int +to_hex (unsigned char ch, unsigned char *s) +{ + unsigned int uvalue = ch; + + s[1] = "0123456789ABCDEF"[uvalue % 16]; + uvalue = (uvalue / 16); + s[0] = "0123456789ABCDEF"[uvalue % 16]; + return 0; +} + +/* XXX: This is ridiculously complicated to be backward compatible + * (mostly) with the quopri module. It doesn't re-create the quopri + * module bug where text ending in CRLF has the CR encoded */ + +/*[clinic input] +binascii.b2a_qp + + data: Py_buffer + quotetabs: bool(accept={int}) = False + istext: bool(accept={int}) = True + header: bool(accept={int}) = False + +Encode a string using quoted-printable encoding. + +On encoding, when istext is set, newlines are not encoded, and white +space at end of lines is. When istext is not set, \r and \n (CR/LF) +are both encoded. When quotetabs is set, space and tabs are encoded. +[clinic start generated code]*/ + +static PyObject * +binascii_b2a_qp_impl(PyObject *module, Py_buffer *data, int quotetabs, + int istext, int header) +/*[clinic end generated code: output=e9884472ebb1a94c input=21fb7eea4a184ba6]*/ +{ + Py_ssize_t in, out; + const unsigned char *databuf; + unsigned char *odata; + Py_ssize_t datalen = 0, odatalen = 0; + PyObject *rv; + unsigned int linelen = 0; + unsigned char ch; + int crlf = 0; + const unsigned char *p; + + databuf = data->buf; + datalen = data->len; + + /* See if this string is using CRLF line ends */ + /* XXX: this function has the side effect of converting all of + * the end of lines to be the same depending on this detection + * here */ + p = (const unsigned char *) memchr(databuf, '\n', datalen); + if ((p != NULL) && (p > databuf) && (*(p-1) == '\r')) + crlf = 1; + + /* First, scan to see how many characters need to be encoded */ + in = 0; + while (in < datalen) { + Py_ssize_t delta = 0; + if ((databuf[in] > 126) || + (databuf[in] == '=') || + (header && databuf[in] == '_') || + ((databuf[in] == '.') && (linelen == 0) && + (in + 1 == datalen || databuf[in+1] == '\n' || + databuf[in+1] == '\r' || databuf[in+1] == 0)) || + (!istext && ((databuf[in] == '\r') || (databuf[in] == '\n'))) || + ((databuf[in] == '\t' || databuf[in] == ' ') && (in + 1 == datalen)) || + ((databuf[in] < 33) && + (databuf[in] != '\r') && (databuf[in] != '\n') && + (quotetabs || ((databuf[in] != '\t') && (databuf[in] != ' '))))) + { + if ((linelen + 3) >= MAXLINESIZE) { + linelen = 0; + if (crlf) + delta += 3; + else + delta += 2; + } + linelen += 3; + delta += 3; + in++; + } + else { + if (istext && + ((databuf[in] == '\n') || + ((in+1 < datalen) && (databuf[in] == '\r') && + (databuf[in+1] == '\n')))) + { + linelen = 0; + /* Protect against whitespace on end of line */ + if (in && ((databuf[in-1] == ' ') || (databuf[in-1] == '\t'))) + delta += 2; + if (crlf) + delta += 2; + else + delta += 1; + if (databuf[in] == '\r') + in += 2; + else + in++; + } + else { + if ((in + 1 != datalen) && + (databuf[in+1] != '\n') && + (linelen + 1) >= MAXLINESIZE) { + linelen = 0; + if (crlf) + delta += 3; + else + delta += 2; + } + linelen++; + delta++; + in++; + } + } + if (PY_SSIZE_T_MAX - delta < odatalen) { + PyErr_NoMemory(); + return NULL; + } + odatalen += delta; + } + + /* We allocate the output same size as input, this is overkill. + */ odata = (unsigned char *) PyMem_Calloc(1, odatalen); - if (odata == NULL) { - PyErr_NoMemory(); - return NULL; - } - - in = out = linelen = 0; - while (in < datalen) { - if ((databuf[in] > 126) || - (databuf[in] == '=') || - (header && databuf[in] == '_') || - ((databuf[in] == '.') && (linelen == 0) && - (in + 1 == datalen || databuf[in+1] == '\n' || - databuf[in+1] == '\r' || databuf[in+1] == 0)) || - (!istext && ((databuf[in] == '\r') || (databuf[in] == '\n'))) || - ((databuf[in] == '\t' || databuf[in] == ' ') && (in + 1 == datalen)) || - ((databuf[in] < 33) && - (databuf[in] != '\r') && (databuf[in] != '\n') && - (quotetabs || ((databuf[in] != '\t') && (databuf[in] != ' '))))) - { - if ((linelen + 3 )>= MAXLINESIZE) { - odata[out++] = '='; - if (crlf) odata[out++] = '\r'; - odata[out++] = '\n'; - linelen = 0; - } - odata[out++] = '='; - to_hex(databuf[in], &odata[out]); - out += 2; - in++; - linelen += 3; - } - else { - if (istext && - ((databuf[in] == '\n') || - ((in+1 < datalen) && (databuf[in] == '\r') && - (databuf[in+1] == '\n')))) - { - linelen = 0; - /* Protect against whitespace on end of line */ - if (out && ((odata[out-1] == ' ') || (odata[out-1] == '\t'))) { - ch = odata[out-1]; - odata[out-1] = '='; - to_hex(ch, &odata[out]); - out += 2; - } - - if (crlf) odata[out++] = '\r'; - odata[out++] = '\n'; - if (databuf[in] == '\r') - in += 2; - else - in++; - } - else { - if ((in + 1 != datalen) && - (databuf[in+1] != '\n') && - (linelen + 1) >= MAXLINESIZE) { - odata[out++] = '='; - if (crlf) odata[out++] = '\r'; - odata[out++] = '\n'; - linelen = 0; - } - linelen++; - if (header && databuf[in] == ' ') { - odata[out++] = '_'; - in++; - } - else { - odata[out++] = databuf[in++]; - } - } - } - } - if ((rv = PyBytes_FromStringAndSize((char *)odata, out)) == NULL) { - PyMem_Free(odata); - return NULL; - } - PyMem_Free(odata); - return rv; -} - -/* List of functions defined in the module */ - -static struct PyMethodDef binascii_module_methods[] = { - BINASCII_A2B_UU_METHODDEF - BINASCII_B2A_UU_METHODDEF - BINASCII_A2B_BASE64_METHODDEF - BINASCII_B2A_BASE64_METHODDEF - BINASCII_A2B_HQX_METHODDEF - BINASCII_B2A_HQX_METHODDEF - BINASCII_A2B_HEX_METHODDEF - BINASCII_B2A_HEX_METHODDEF - BINASCII_HEXLIFY_METHODDEF - BINASCII_UNHEXLIFY_METHODDEF - BINASCII_RLECODE_HQX_METHODDEF - BINASCII_RLEDECODE_HQX_METHODDEF - BINASCII_CRC_HQX_METHODDEF - BINASCII_CRC32_METHODDEF - BINASCII_A2B_QP_METHODDEF - BINASCII_B2A_QP_METHODDEF - {NULL, NULL} /* sentinel */ -}; - - -/* Initialization function for the module (*must* be called PyInit_binascii) */ -PyDoc_STRVAR(doc_binascii, "Conversion between binary data and ASCII"); - + if (odata == NULL) { + PyErr_NoMemory(); + return NULL; + } + + in = out = linelen = 0; + while (in < datalen) { + if ((databuf[in] > 126) || + (databuf[in] == '=') || + (header && databuf[in] == '_') || + ((databuf[in] == '.') && (linelen == 0) && + (in + 1 == datalen || databuf[in+1] == '\n' || + databuf[in+1] == '\r' || databuf[in+1] == 0)) || + (!istext && ((databuf[in] == '\r') || (databuf[in] == '\n'))) || + ((databuf[in] == '\t' || databuf[in] == ' ') && (in + 1 == datalen)) || + ((databuf[in] < 33) && + (databuf[in] != '\r') && (databuf[in] != '\n') && + (quotetabs || ((databuf[in] != '\t') && (databuf[in] != ' '))))) + { + if ((linelen + 3 )>= MAXLINESIZE) { + odata[out++] = '='; + if (crlf) odata[out++] = '\r'; + odata[out++] = '\n'; + linelen = 0; + } + odata[out++] = '='; + to_hex(databuf[in], &odata[out]); + out += 2; + in++; + linelen += 3; + } + else { + if (istext && + ((databuf[in] == '\n') || + ((in+1 < datalen) && (databuf[in] == '\r') && + (databuf[in+1] == '\n')))) + { + linelen = 0; + /* Protect against whitespace on end of line */ + if (out && ((odata[out-1] == ' ') || (odata[out-1] == '\t'))) { + ch = odata[out-1]; + odata[out-1] = '='; + to_hex(ch, &odata[out]); + out += 2; + } + + if (crlf) odata[out++] = '\r'; + odata[out++] = '\n'; + if (databuf[in] == '\r') + in += 2; + else + in++; + } + else { + if ((in + 1 != datalen) && + (databuf[in+1] != '\n') && + (linelen + 1) >= MAXLINESIZE) { + odata[out++] = '='; + if (crlf) odata[out++] = '\r'; + odata[out++] = '\n'; + linelen = 0; + } + linelen++; + if (header && databuf[in] == ' ') { + odata[out++] = '_'; + in++; + } + else { + odata[out++] = databuf[in++]; + } + } + } + } + if ((rv = PyBytes_FromStringAndSize((char *)odata, out)) == NULL) { + PyMem_Free(odata); + return NULL; + } + PyMem_Free(odata); + return rv; +} + +/* List of functions defined in the module */ + +static struct PyMethodDef binascii_module_methods[] = { + BINASCII_A2B_UU_METHODDEF + BINASCII_B2A_UU_METHODDEF + BINASCII_A2B_BASE64_METHODDEF + BINASCII_B2A_BASE64_METHODDEF + BINASCII_A2B_HQX_METHODDEF + BINASCII_B2A_HQX_METHODDEF + BINASCII_A2B_HEX_METHODDEF + BINASCII_B2A_HEX_METHODDEF + BINASCII_HEXLIFY_METHODDEF + BINASCII_UNHEXLIFY_METHODDEF + BINASCII_RLECODE_HQX_METHODDEF + BINASCII_RLEDECODE_HQX_METHODDEF + BINASCII_CRC_HQX_METHODDEF + BINASCII_CRC32_METHODDEF + BINASCII_A2B_QP_METHODDEF + BINASCII_B2A_QP_METHODDEF + {NULL, NULL} /* sentinel */ +}; + + +/* Initialization function for the module (*must* be called PyInit_binascii) */ +PyDoc_STRVAR(doc_binascii, "Conversion between binary data and ASCII"); + static int binascii_exec(PyObject *module) { int result; @@ -1612,7 +1612,7 @@ binascii_exec(PyObject *module) { if (state == NULL) { return -1; } - + state->Error = PyErr_NewException("binascii.Error", PyExc_ValueError, NULL); if (state->Error == NULL) { return -1; @@ -1667,20 +1667,20 @@ binascii_free(void *module) binascii_clear((PyObject *)module); } -static struct PyModuleDef binasciimodule = { - PyModuleDef_HEAD_INIT, - "binascii", - doc_binascii, +static struct PyModuleDef binasciimodule = { + PyModuleDef_HEAD_INIT, + "binascii", + doc_binascii, sizeof(binascii_state), - binascii_module_methods, + binascii_module_methods, binascii_slots, binascii_traverse, binascii_clear, binascii_free -}; - -PyMODINIT_FUNC -PyInit_binascii(void) -{ +}; + +PyMODINIT_FUNC +PyInit_binascii(void) +{ return PyModuleDef_Init(&binasciimodule); -} +} |