mirrors/cosmopolitan
1
0
Fork 0
mirror of https://github.com/jart/cosmopolitan.git synced 2025-01-31 19:43:32 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions
cosmopolitan/third_party/python/Modules/binascii.c
Justine Tunney 559b024e1d Decentralize Python native module linkage 
We can now link even smaller Python binaries. For example, the hello.com
program in the Python build directory is a compiled linked executable of
hello.py which just prints hello world. Using decentralized sections, we
can make that binary 1.9mb in size (noting that python.com is 6.3 megs!)

This works for nontrivial programs too. For example, say we want an APE
binary that's equivalent to python.com -m http.server. Our makefile now
builds such a binary using the new launcher and it's only 3.2mb in size
since Python sources get turned into ELF objects, which tell our linker
that we need things like native hashing algorithm code.
2021-09-07 11:40:11 -07:00

1482 lines
46 KiB
C
Raw Blame History

/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:4;tab-width:8;coding:utf-8 -*-│
│vi: set net ft=c ts=4 sts=4 sw=4 fenc=utf-8 :vi│
╞══════════════════════════════════════════════════════════════════════════════╡
│ Python 3 │
│ https://docs.python.org/3/license.html │
╚─────────────────────────────────────────────────────────────────────────────*/
#define PY_SSIZE_T_CLEAN
#include "libc/assert.h"
#include "third_party/python/Include/abstract.h"
#include "third_party/python/Include/dictobject.h"
#include "third_party/python/Include/import.h"
#include "third_party/python/Include/longobject.h"
#include "third_party/python/Include/modsupport.h"
#include "third_party/python/Include/pyctype.h"
#include "third_party/python/Include/pyerrors.h"
#include "third_party/python/Include/pymacro.h"
#include "third_party/python/Include/pymem.h"
#include "third_party/python/Include/pystrhex.h"
#include "third_party/python/Include/unicodeobject.h"
#include "third_party/python/Include/yoink.h"
#include "third_party/zlib/zlib.h"
/* clang-format off */
PYTHON_PROVIDE("binascii");
PYTHON_PROVIDE("binascii.Error");
PYTHON_PROVIDE("binascii.Incomplete");
PYTHON_PROVIDE("binascii.a2b_base64");
PYTHON_PROVIDE("binascii.a2b_hex");
PYTHON_PROVIDE("binascii.a2b_hqx");
PYTHON_PROVIDE("binascii.a2b_qp");
PYTHON_PROVIDE("binascii.a2b_uu");
PYTHON_PROVIDE("binascii.b2a_base64");
PYTHON_PROVIDE("binascii.b2a_hex");
PYTHON_PROVIDE("binascii.b2a_hqx");
PYTHON_PROVIDE("binascii.b2a_qp");
PYTHON_PROVIDE("binascii.b2a_uu");
PYTHON_PROVIDE("binascii.crc32");
PYTHON_PROVIDE("binascii.crc_hqx");
PYTHON_PROVIDE("binascii.hexlify");
PYTHON_PROVIDE("binascii.rlecode_hqx");
PYTHON_PROVIDE("binascii.rledecode_hqx");
PYTHON_PROVIDE("binascii.unhexlify");
/*
** 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.
*/
static PyObject *Error;
static PyObject *Incomplete;
/*
** 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 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,
41,42,43,44, 45,46,47,48, 49,50,51,-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 "third_party/python/Modules/clinic/binascii.inc"
/*[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;
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)) {
PyErr_SetString(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' ) {
PyErr_SetString(Error, "Trailing garbage");
Py_DECREF(rv);
return NULL;
}
}
return rv;
}
/*[clinic input]
binascii.b2a_uu
data: Py_buffer
/
Uuencode line of data.
[clinic start generated code]*/
static PyObject *
binascii_b2a_uu_impl(PyObject *module, Py_buffer *data)
/*[clinic end generated code: output=0070670e52e4aa6b input=00fdf458ce8b465b]*/
{
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;
_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 */
PyErr_SetString(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 */
*ascii_data++ = ' ' + (bin_len & 077);
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;
*ascii_data++ = this_ch + ' ';
}
}
*ascii_data++ = '\n'; /* Append a courtesy newline */
return _PyBytesWriter_Finish(&writer, ascii_data);
}
static int
binascii_find_valid(const unsigned char *s, Py_ssize_t slen, int num)
{
/* Finds & returns the (num+1)th
** valid character for base64, or -1 if none.
*/
int ret = -1;
unsigned char c, b64val;
while ((slen > 0) && (ret == -1)) {
c = *s;
b64val = table_a2b_base64[c & 0x7f];
if ( ((c <= 0x7f) && (b64val != (unsigned char)-1)) ) {
if (num == 0)
ret = *s;
num--;
}
s++;
slen--;
}
return ret;
}
/*[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]*/
{
const unsigned char *ascii_data;
unsigned char *bin_data;
int leftbits = 0;
unsigned char this_ch;
unsigned int leftchar = 0;
Py_ssize_t ascii_len, bin_len;
int quad_pos = 0;
_PyBytesWriter writer;
ascii_data = data->buf;
ascii_len = data->len;
assert(ascii_len >= 0);
if (ascii_len > PY_SSIZE_T_MAX - 3)
return PyErr_NoMemory();
bin_len = ((ascii_len+3)/4)*3; /* Upper bound, corrected later */
_PyBytesWriter_Init(&writer);
/* Allocate the buffer */
bin_data = _PyBytesWriter_Alloc(&writer, bin_len);
if (bin_data == NULL)
return NULL;
for( ; ascii_len > 0; ascii_len--, ascii_data++) {
this_ch = *ascii_data;
if (this_ch > 0x7f ||
this_ch == '\r' || this_ch == '\n' || this_ch == ' ')
continue;
/* Check for pad sequences and ignore
** the invalid ones.
*/
if (this_ch == BASE64_PAD) {
if ( (quad_pos < 2) ||
((quad_pos == 2) &&
(binascii_find_valid(ascii_data, ascii_len, 1)
!= BASE64_PAD)) )
{
continue;
}
else {
/* A pad sequence means no more input.
** We've already interpreted the data
** from the quad at this point.
*/
leftbits = 0;
break;
}
}
this_ch = table_a2b_base64[*ascii_data];
if ( this_ch == (unsigned char) -1 )
continue;
/*
** Shift it in on the low end, and see if there's
** a byte ready for output.
*/
quad_pos = (quad_pos + 1) & 0x03;
leftchar = (leftchar << 6) | (this_ch);
leftbits += 6;
if ( leftbits >= 8 ) {
leftbits -= 8;
*bin_data++ = (leftchar >> leftbits) & 0xff;
leftchar &= ((1 << leftbits) - 1);
}
}
if (leftbits != 0) {
PyErr_SetString(Error, "Incorrect padding");
_PyBytesWriter_Dealloc(&writer);
return NULL;
}
return _PyBytesWriter_Finish(&writer, bin_data);
}
/*[clinic input]
binascii.b2a_base64
data: Py_buffer
*
newline: int(c_default="1") = 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=7b2ea6fa38d8924c]*/
{
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;
bin_data = data->buf;
bin_len = data->len;
_PyBytesWriter_Init(&writer);
assert(bin_len >= 0);
if ( bin_len > BASE64_MAXBIN ) {
PyErr_SetString(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]*/
{
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;
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 ) {
PyErr_SetString(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 ) {
PyErr_SetString(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]*/
{
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]*/
{
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]*/
{
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);
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 ) { \
PyErr_SetString(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.
*/
PyErr_SetString(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]
binascii.crc_hqx -> unsigned_int
data: Py_buffer
crc: unsigned_int(bitwise=True)
/
Compute CRC-CCITT incrementally.
[clinic start generated code]*/
static unsigned int
binascii_crc_hqx_impl(PyObject *module, Py_buffer *data, unsigned int crc)
/*[clinic end generated code: output=8ec2a78590d19170 input=f18240ff8c705b79]*/
{
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 crc;
}
/*[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]*/
/* 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;
}
/*[clinic input]
binascii.b2a_hex
data: Py_buffer
/
Hexadecimal representation of binary data.
The return value is a bytes object. This function is also
available as "hexlify()".
[clinic start generated code]*/
static PyObject *
binascii_b2a_hex_impl(PyObject *module, Py_buffer *data)
/*[clinic end generated code: output=92fec1a95c9897a0 input=96423cfa299ff3b1]*/
{
return _Py_strhex_bytes((const char *)data->buf, data->len);
}
/*[clinic input]
binascii.hexlify = binascii.b2a_hex
Hexadecimal representation of binary data.
The return value is a bytes object.
[clinic start generated code]*/
static PyObject *
binascii_hexlify_impl(PyObject *module, Py_buffer *data)
/*[clinic end generated code: output=749e95e53c14880c input=2e3afae7f083f061]*/
{
return _Py_strhex_bytes((const char *)data->buf, data->len);
}
static int
to_int(int c)
{
if (Py_ISDIGIT(c))
return c - '0';
else {
if (Py_ISUPPER(c))
c = Py_TOLOWER(c);
if (c >= 'a' && c <= 'f')
return c - 'a' + 10;
}
return -1;
}
/*[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;
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) {
PyErr_SetString(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) {
int top = to_int(Py_CHARMASK(argbuf[i]));
int bot = to_int(Py_CHARMASK(argbuf[i+1]));
if (top == -1 || bot == -1) {
PyErr_SetString(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);
}
static const int table_hex[128] = {
-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,
0, 1, 2, 3, 4, 5, 6, 7, 8, 9,-1,-1, -1,-1,-1,-1,
-1,10,11,12, 13,14,15,-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,
-1,10,11,12, 13,14,15,-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 hexval(c) table_hex[(unsigned int)(c)]
#define MAXLINESIZE 76
/*[clinic input]
binascii.a2b_qp
data: ascii_buffer
header: int(c_default="0") = 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=5187a0d3d8e54f3b]*/
{
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.
* The previous implementation used calloc() so we'll zero out the
* memory here too, since PyMem_Malloc() does not guarantee that.
*/
odata = (unsigned char *) PyMem_Malloc(datalen);
if (odata == NULL) {
PyErr_NoMemory();
return NULL;
}
bzero(odata, datalen);
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 = hexval(ascii_data[in]) << 4;
in++;
ch |= hexval(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: int(c_default="0") = False
istext: int(c_default="1") = True
header: int(c_default="0") = 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=7f2a9aaa008e92b2]*/
{
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.
* The previous implementation used calloc() so we'll zero out the
* memory here too, since PyMem_Malloc() does not guarantee that.
*/
odata = (unsigned char *) PyMem_Malloc(odatalen);
if (odata == NULL) {
PyErr_NoMemory();
return NULL;
}
bzero(odata, odatalen);
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 struct PyModuleDef binasciimodule = {
PyModuleDef_HEAD_INIT,
"binascii",
doc_binascii,
-1,
binascii_module_methods,
NULL,
NULL,
NULL,
NULL
};
PyMODINIT_FUNC
PyInit_binascii(void)
{
PyObject *m, *d;
/* Create the module and add the functions */
m = PyModule_Create(&binasciimodule);
if (m == NULL)
return NULL;
d = PyModule_GetDict(m);
Error = PyErr_NewException("binascii.Error", PyExc_ValueError, NULL);
PyDict_SetItemString(d, "Error", Error);
Incomplete = PyErr_NewException("binascii.Incomplete", NULL, NULL);
PyDict_SetItemString(d, "Incomplete", Incomplete);
if (PyErr_Occurred()) {
Py_DECREF(m);
m = NULL;
}
return m;
}
_Section(".rodata.pytab.1") const struct _inittab _PyImport_Inittab_binascii = {
"binascii",
PyInit_binascii,
};
Reference in a new issue View git blame Copy permalink