From 727811907cd23676fd6f2c9d1bde7587f6c629bb Mon Sep 17 00:00:00 2001 From: Jack Jansen Date: Mon, 7 Aug 1995 14:34:15 +0000 Subject: [PATCH] Helper module for uuencode and binhex coders --- Modules/Setup.in | 3 + Modules/binascii.c | 602 +++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 605 insertions(+) create mode 100644 Modules/binascii.c diff --git a/Modules/Setup.in b/Modules/Setup.in index 0f9a2ffc394..a0939a9fe96 100644 --- a/Modules/Setup.in +++ b/Modules/Setup.in @@ -300,6 +300,9 @@ rotor rotormodule.c # enigma-inspired encryption # Objective-C (incomplete!!!) #objc.c +# Helper module for various ascii-encoders +binascii binasciimodule.c + # Example -- included for reference only: # xx xxmodule.c diff --git a/Modules/binascii.c b/Modules/binascii.c new file mode 100644 index 00000000000..100165db572 --- /dev/null +++ b/Modules/binascii.c @@ -0,0 +1,602 @@ +/*********************************************************** +Copyright 1991, 1992, 1993, 1994 by Stichting Mathematisch Centrum, +Amsterdam, The Netherlands. + + All Rights Reserved + +Permission to use, copy, modify, and distribute this software and its +documentation for any purpose and without fee is hereby granted, +provided that the above copyright notice appear in all copies and that +both that copyright notice and this permission notice appear in +supporting documentation, and that the names of Stichting Mathematisch +Centrum or CWI not be used in advertising or publicity pertaining to +distribution of the software without specific, written prior permission. + +STICHTING MATHEMATISCH CENTRUM DISCLAIMS ALL WARRANTIES WITH REGARD TO +THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH CENTRUM BE LIABLE +FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES +WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN +ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT +OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + +******************************************************************/ + +/* +** 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. +** 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. +*/ + + +#include "Python.h" + +static PyObject *Error; +static PyObject *Incomplete; + +/* +** hqx lookup table, ascii->binary. +*/ + +#define RUNCHAR 0x90 + +#define DONE 0x7F +#define SKIP 0x7E +#define FAIL 0x7D + +static 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 unsigned char table_b2a_hqx[] = + "!\"#$%&'()*+,-012345689@ABCDEFGHIJKLMNPQRSTUVXYZ[`abcdefhijklmpqr"; + +static 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, +}; + +static char doc_a2b_uu[] = "(ascii) -> bin. Decode a line of uuencoded data"; + +static PyObject * +binascii_a2b_uu(self, args) + PyObject *self; + PyObject *args; +{ + unsigned char *ascii_data, *bin_data; + int leftbits = 0; + unsigned char this_ch; + unsigned int leftchar = 0; + PyObject *rv; + int ascii_len, bin_len; + + if ( !PyArg_ParseTuple(args, "s#", &ascii_data, &ascii_len) ) + return NULL; + + /* First byte: binary data length (in bytes) */ + bin_len = (*ascii_data++ - ' ') & 077; + ascii_len--; + + /* Allocate the buffer */ + if ( (rv=PyString_FromStringAndSize(NULL, bin_len)) == NULL ) + return NULL; + bin_data = (unsigned char *)PyString_AsString(rv); + + for( ; bin_len > 0 ; ascii_len--, ascii_data++ ) { + this_ch = *ascii_data; + 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 */ + if ( this_ch < ' ' || this_ch > (' ' + 63)) { + 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++; + if ( this_ch != ' ' && this_ch != '\n' && this_ch != '\r' ) { + PyErr_SetString(Error, "Trailing garbage"); + Py_DECREF(rv); + return NULL; + } + } + return rv; +} + +static char doc_b2a_uu[] = "(bin) -> ascii. Uuencode line of data"; + +static PyObject * +binascii_b2a_uu(self, args) + PyObject *self; + PyObject *args; +{ + unsigned char *ascii_data, *bin_data; + int leftbits = 0; + unsigned char this_ch; + unsigned int leftchar = 0; + PyObject *rv; + int bin_len; + + if ( !PyArg_ParseTuple(args, "s#", &bin_data, &bin_len) ) + return NULL; + 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) */ + if ( (rv=PyString_FromStringAndSize(NULL, bin_len*2)) == NULL ) + return NULL; + ascii_data = (unsigned char *)PyString_AsString(rv); + + /* 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 */ + + _PyString_Resize(&rv, (ascii_data - (unsigned char *)PyString_AsString(rv))); + return rv; +} + +static char doc_a2b_hqx[] = "ascii -> bin, done. Decode .hqx coding"; + +static PyObject * +binascii_a2b_hqx(self, args) + PyObject *self; + PyObject *args; +{ + unsigned char *ascii_data, *bin_data; + int leftbits = 0; + unsigned char this_ch; + unsigned int leftchar; + PyObject *rv; + int len; + int done = 0; + + if ( !PyArg_ParseTuple(args, "s#", &ascii_data, &len) ) + return NULL; + + /* Allocate a string that is too big (fixed later) */ + if ( (rv=PyString_FromStringAndSize(NULL, len)) == NULL ) + return NULL; + bin_data = (unsigned char *)PyString_AsString(rv); + + 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"); + Py_DECREF(rv); + 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"); + Py_DECREF(rv); + return NULL; + } + _PyString_Resize(&rv, (bin_data - (unsigned char *)PyString_AsString(rv))); + if ( rv ) + return Py_BuildValue("Oi", rv, done); + return NULL; +} + +static char doc_rlecode_hqx[] = "Binhex RLE-code binary data"; + +static PyObject * +binascii_rlecode_hqx(self, args) + PyObject *self; + PyObject *args; +{ + unsigned char *in_data, *out_data; + PyObject *rv; + unsigned char ch; + int in, inend, len; + + if ( !PyArg_ParseTuple(args, "s#", &in_data, &len) ) + return NULL; + + /* Worst case: output is twice as big as input (fixed later) */ + if ( (rv=PyString_FromStringAndSize(NULL, len*2)) == NULL ) + return NULL; + out_data = (unsigned char *)PyString_AsString(rv); + + for( in=0; in 3 && inend-in != RUNCHAR ) { + /* More than 3 in a row. Output RLE. + ** The special case of exactly 0x90 repeats will result in a single + ** byte now and a 0x8f repeat next time around + */ + *out_data++ = ch; + *out_data++ = RUNCHAR; + *out_data++ = inend-in; + in = inend-1; + } else { + /* Less than 3. Output the byte itself */ + *out_data++ = ch; + } + } + } + _PyString_Resize(&rv, (out_data - (unsigned char *)PyString_AsString(rv))); + return rv; +} + +static char doc_b2a_hqx[] = "Encode .hqx data"; + +static PyObject * +binascii_b2a_hqx(self, args) + PyObject *self; + PyObject *args; +{ + unsigned char *ascii_data, *bin_data; + int leftbits = 0; + unsigned char this_ch; + unsigned int leftchar; + PyObject *rv; + int len; + + if ( !PyArg_ParseTuple(args, "s#", &bin_data, &len) ) + return NULL; + + /* Allocate a buffer that is at least large enough */ + if ( (rv=PyString_FromStringAndSize(NULL, len*2)) == NULL ) + return NULL; + ascii_data = (unsigned char *)PyString_AsString(rv); + + 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]; + } + _PyString_Resize(&rv, (ascii_data - (unsigned char *)PyString_AsString(rv))); + return rv; +} + +static char doc_rledecode_hqx[] = "Decode hexbin RLE-coded string"; + +static PyObject * +binascii_rledecode_hqx(self, args) + PyObject *self; + PyObject *args; +{ + unsigned char *in_data, *out_data; + unsigned char in_byte, in_repeat; + PyObject *rv; + int in_len, out_len, out_len_left; + + if ( !PyArg_ParseTuple(args, "s#", &in_data, &in_len) ) + return NULL; + + /* Empty string is a special case */ + if ( in_len == 0 ) + return Py_BuildValue("s", ""); + + /* Allocate a buffer of reasonable size. Resized when needed */ + out_len = in_len*2; + if ( (rv=PyString_FromStringAndSize(NULL, out_len)) == NULL ) + return NULL; + out_len_left = out_len; + out_data = (unsigned char *)PyString_AsString(rv); + + /* + ** 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, ""); \ + Py_DECREF(rv); \ + return NULL; \ + } \ + b = *in_data++; \ + } while(0) + +#define OUTBYTE(b) \ + do { \ + if ( --out_len_left < 0 ) { \ + _PyString_Resize(&rv, 2*out_len); \ + if ( rv == NULL ) return NULL; \ + out_data = (unsigned char *)PyString_AsString(rv) + out_len; \ + out_len_left = out_len; \ + out_len = out_len * 2; \ + } \ + *out_data++ = b; \ + } 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); + 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"); + Py_DECREF(rv); + return NULL; + } + OUTBYTE(RUNCHAR); + } else { + OUTBYTE(in_byte); + } + + while( in_len > 0 ) { + INBYTE(in_byte); + + if (in_byte == RUNCHAR) { + INBYTE(in_repeat); + if ( in_repeat == 0 ) { + /* Just an escaped RUNCHAR value */ + OUTBYTE(RUNCHAR); + } else { + /* Pick up value and output a sequence of it */ + in_byte = out_data[-1]; + while ( --in_repeat > 0 ) + OUTBYTE(in_byte); + } + } else { + /* Normal byte */ + OUTBYTE(in_byte); + } + } + _PyString_Resize(&rv, (out_data - (unsigned char *)PyString_AsString(rv))); + return rv; +} + +static char doc_crc_hqx[] = "(data, oldcrc) -> newcrc. Compute hqx CRC incrementally"; + +static PyObject * +binascii_crc_hqx(self, args) + PyObject *self; + PyObject *args; +{ + unsigned char *bin_data; + unsigned int crc; + int len; + + if ( !PyArg_ParseTuple(args, "s#i", &bin_data, &len, &crc) ) + return NULL; + + while(len--) { + crc=((crc<<8)&0xff00)^crctab_hqx[((crc>>8)&0xff)^*bin_data++]; + } + + return Py_BuildValue("i", crc); +} + +/* List of functions defined in the module */ + +static struct PyMethodDef binascii_module_methods[] = { + {"a2b_uu", binascii_a2b_uu, 1, doc_a2b_uu}, + {"b2a_uu", binascii_b2a_uu, 1, doc_b2a_uu}, + {"a2b_hqx", binascii_a2b_hqx, 1, doc_a2b_hqx}, + {"b2a_hqx", binascii_b2a_hqx, 1, doc_b2a_hqx}, + {"rlecode_hqx", binascii_rlecode_hqx, 1, + doc_rlecode_hqx}, + {"rledecode_hqx", binascii_rledecode_hqx, 1, + doc_rledecode_hqx}, + {"crc_hqx", binascii_crc_hqx, 1, doc_crc_hqx}, + {NULL, NULL} /* sentinel */ +}; + + +/* Initialization function for the module (*must* be called initbinascii) */ +static char doc_binascii[] = "Conversion between binary data and ASCII"; + +void +initbinascii() +{ + PyObject *m, *d, *x; + + /* Create the module and add the functions */ + m = Py_InitModule("binascii", binascii_module_methods); + + d = PyModule_GetDict(m); + x = PyString_FromString(doc_binascii); + PyDict_SetItemString(d, "__doc__", x); + + Error = PyString_FromString("binascii.Error"); + PyDict_SetItemString(d, "Error", Error); + Incomplete = PyString_FromString("binascii.Incomplete"); + PyDict_SetItemString(d, "Incomplete", Incomplete); + + /* Check for errors */ + if (PyErr_Occurred()) + Py_FatalError("can't initialize module binascii"); +}