From 4710c53dcad1ebf3755f3efb9e80ac24bd72a9b2 Mon Sep 17 00:00:00 2001 From: darylm503 Date: Mon, 16 Apr 2012 22:12:42 +0000 Subject: AppPkg/Applications/Python: Add Python 2.7.2 sources since the release of Python 2.7.3 made them unavailable from the python.org web site. These files are a subset of the python-2.7.2.tgz distribution from python.org. Changed files from PyMod-2.7.2 have been copied into the corresponding directories of this tree, replacing the original files in the distribution. Signed-off-by: daryl.mcdaniel@intel.com git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@13197 6f19259b-4bc3-4df7-8a09-765794883524 --- .../Python/Python-2.7.2/Modules/binascii.c | 1531 ++++++++++++++++++++ 1 file changed, 1531 insertions(+) create mode 100644 AppPkg/Applications/Python/Python-2.7.2/Modules/binascii.c (limited to 'AppPkg/Applications/Python/Python-2.7.2/Modules/binascii.c') diff --git a/AppPkg/Applications/Python/Python-2.7.2/Modules/binascii.c b/AppPkg/Applications/Python/Python-2.7.2/Modules/binascii.c new file mode 100644 index 0000000000..ed391209de --- /dev/null +++ b/AppPkg/Applications/Python/Python-2.7.2/Modules/binascii.c @@ -0,0 +1,1531 @@ +/* +** 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" +#ifdef USE_ZLIB_CRC32 +#include "zlib.h" +#endif + +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 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/2 - sizeof(PyStringObject) - 3) + +static unsigned char table_b2a_base64[] = +"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"; + + + +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, +}; + +PyDoc_STRVAR(doc_a2b_uu, "(ascii) -> bin. Decode a line of uuencoded data"); + +static PyObject * +binascii_a2b_uu(PyObject *self, PyObject *args) +{ + Py_buffer pascii; + unsigned char *ascii_data, *bin_data; + int leftbits = 0; + unsigned char this_ch; + unsigned int leftchar = 0; + PyObject *rv; + Py_ssize_t ascii_len, bin_len; + + if ( !PyArg_ParseTuple(args, "s*:a2b_uu", &pascii) ) + return NULL; + ascii_data = pascii.buf; + ascii_len = pascii.len; + + assert(ascii_len >= 0); + + /* 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 ) { + PyBuffer_Release(&pascii); + return NULL; + } + bin_data = (unsigned char *)PyString_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"); + PyBuffer_Release(&pascii); + 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"); + PyBuffer_Release(&pascii); + Py_DECREF(rv); + return NULL; + } + } + PyBuffer_Release(&pascii); + return rv; +} + +PyDoc_STRVAR(doc_b2a_uu, "(bin) -> ascii. Uuencode line of data"); + +static PyObject * +binascii_b2a_uu(PyObject *self, PyObject *args) +{ + Py_buffer pbin; + unsigned char *ascii_data, *bin_data; + int leftbits = 0; + unsigned char this_ch; + unsigned int leftchar = 0; + PyObject *rv; + Py_ssize_t bin_len; + + if ( !PyArg_ParseTuple(args, "s*:b2a_uu", &pbin) ) + return NULL; + bin_data = pbin.buf; + bin_len = pbin.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"); + PyBuffer_Release(&pbin); + return NULL; + } + + /* We're lazy and allocate to much (fixed up later) */ + if ( (rv=PyString_FromStringAndSize(NULL, 2 + (bin_len+2)/3*4)) == NULL ) { + PyBuffer_Release(&pbin); + return NULL; + } + ascii_data = (unsigned char *)PyString_AS_STRING(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 */ + + if (_PyString_Resize(&rv, + (ascii_data - + (unsigned char *)PyString_AS_STRING(rv))) < 0) { + Py_DECREF(rv); + rv = NULL; + } + PyBuffer_Release(&pbin); + return rv; +} + + +static int +binascii_find_valid(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; +} + +PyDoc_STRVAR(doc_a2b_base64, "(ascii) -> bin. Decode a line of base64 data"); + +static PyObject * +binascii_a2b_base64(PyObject *self, PyObject *args) +{ + Py_buffer pascii; + unsigned char *ascii_data, *bin_data; + int leftbits = 0; + unsigned char this_ch; + unsigned int leftchar = 0; + PyObject *rv; + Py_ssize_t ascii_len, bin_len; + int quad_pos = 0; + + if ( !PyArg_ParseTuple(args, "s*:a2b_base64", &pascii) ) + return NULL; + ascii_data = pascii.buf; + ascii_len = pascii.len; + + assert(ascii_len >= 0); + + if (ascii_len > PY_SSIZE_T_MAX - 3) { + PyBuffer_Release(&pascii); + return PyErr_NoMemory(); + } + + bin_len = ((ascii_len+3)/4)*3; /* Upper bound, corrected later */ + + /* Allocate the buffer */ + if ( (rv=PyString_FromStringAndSize(NULL, bin_len)) == NULL ) { + PyBuffer_Release(&pascii); + return NULL; + } + bin_data = (unsigned char *)PyString_AS_STRING(rv); + bin_len = 0; + + 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; + bin_len++; + leftchar &= ((1 << leftbits) - 1); + } + } + + if (leftbits != 0) { + PyBuffer_Release(&pascii); + PyErr_SetString(Error, "Incorrect padding"); + Py_DECREF(rv); + return NULL; + } + + /* And set string size correctly. If the result string is empty + ** (because the input was all invalid) return the shared empty + ** string instead; _PyString_Resize() won't do this for us. + */ + if (bin_len > 0) { + if (_PyString_Resize(&rv, bin_len) < 0) { + Py_DECREF(rv); + rv = NULL; + } + } + else { + Py_DECREF(rv); + rv = PyString_FromStringAndSize("", 0); + } + PyBuffer_Release(&pascii); + return rv; +} + +PyDoc_STRVAR(doc_b2a_base64, "(bin) -> ascii. Base64-code line of data"); + +static PyObject * +binascii_b2a_base64(PyObject *self, PyObject *args) +{ + Py_buffer pbuf; + unsigned char *ascii_data, *bin_data; + int leftbits = 0; + unsigned char this_ch; + unsigned int leftchar = 0; + PyObject *rv; + Py_ssize_t bin_len; + + if ( !PyArg_ParseTuple(args, "s*:b2a_base64", &pbuf) ) + return NULL; + bin_data = pbuf.buf; + bin_len = pbuf.len; + + assert(bin_len >= 0); + + if ( bin_len > BASE64_MAXBIN ) { + PyErr_SetString(Error, "Too much data for base64 line"); + PyBuffer_Release(&pbuf); + return NULL; + } + + /* We're lazy and allocate too much (fixed up later). + "+3" leaves room for up to two pad characters and a trailing + newline. Note that 'b' gets encoded as 'Yg==\n' (1 in, 5 out). */ + if ( (rv=PyString_FromStringAndSize(NULL, bin_len*2 + 3)) == NULL ) { + PyBuffer_Release(&pbuf); + return NULL; + } + ascii_data = (unsigned char *)PyString_AS_STRING(rv); + + 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; + } + *ascii_data++ = '\n'; /* Append a courtesy newline */ + + if (_PyString_Resize(&rv, + (ascii_data - + (unsigned char *)PyString_AS_STRING(rv))) < 0) { + Py_DECREF(rv); + rv = NULL; + } + PyBuffer_Release(&pbuf); + return rv; +} + +PyDoc_STRVAR(doc_a2b_hqx, "ascii -> bin, done. Decode .hqx coding"); + +static PyObject * +binascii_a2b_hqx(PyObject *self, PyObject *args) +{ + Py_buffer pascii; + unsigned char *ascii_data, *bin_data; + int leftbits = 0; + unsigned char this_ch; + unsigned int leftchar = 0; + PyObject *rv; + Py_ssize_t len; + int done = 0; + + if ( !PyArg_ParseTuple(args, "s*:a2b_hqx", &pascii) ) + return NULL; + ascii_data = pascii.buf; + len = pascii.len; + + assert(len >= 0); + + if (len > PY_SSIZE_T_MAX - 2) { + PyBuffer_Release(&pascii); + 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. */ + if ( (rv=PyString_FromStringAndSize(NULL, len+2)) == NULL ) { + PyBuffer_Release(&pascii); + return NULL; + } + bin_data = (unsigned char *)PyString_AS_STRING(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"); + PyBuffer_Release(&pascii); + 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"); + PyBuffer_Release(&pascii); + Py_DECREF(rv); + return NULL; + } + if (_PyString_Resize(&rv, + (bin_data - + (unsigned char *)PyString_AS_STRING(rv))) < 0) { + Py_DECREF(rv); + rv = NULL; + } + if (rv) { + PyObject *rrv = Py_BuildValue("Oi", rv, done); + PyBuffer_Release(&pascii); + Py_DECREF(rv); + return rrv; + } + + PyBuffer_Release(&pascii); + return NULL; +} + +PyDoc_STRVAR(doc_rlecode_hqx, "Binhex RLE-code binary data"); + +static PyObject * +binascii_rlecode_hqx(PyObject *self, PyObject *args) +{ + Py_buffer pbuf; + unsigned char *in_data, *out_data; + PyObject *rv; + unsigned char ch; + Py_ssize_t in, inend, len; + + if ( !PyArg_ParseTuple(args, "s*:rlecode_hqx", &pbuf) ) + return NULL; + in_data = pbuf.buf; + len = pbuf.len; + + assert(len >= 0); + + if (len > PY_SSIZE_T_MAX / 2 - 2) { + PyBuffer_Release(&pbuf); + return PyErr_NoMemory(); + } + + /* Worst case: output is twice as big as input (fixed later) */ + if ( (rv=PyString_FromStringAndSize(NULL, len*2+2)) == NULL ) { + PyBuffer_Release(&pbuf); + return NULL; + } + out_data = (unsigned char *)PyString_AS_STRING(rv); + + for( in=0; in 3 ) { + /* More than 3 in a row. Output RLE. */ + *out_data++ = ch; + *out_data++ = RUNCHAR; + *out_data++ = inend-in; + in = inend-1; + } else { + /* Less than 3. Output the byte itself */ + *out_data++ = ch; + } + } + } + if (_PyString_Resize(&rv, + (out_data - + (unsigned char *)PyString_AS_STRING(rv))) < 0) { + Py_DECREF(rv); + rv = NULL; + } + PyBuffer_Release(&pbuf); + return rv; +} + +PyDoc_STRVAR(doc_b2a_hqx, "Encode .hqx data"); + +static PyObject * +binascii_b2a_hqx(PyObject *self, PyObject *args) +{ + Py_buffer pbin; + unsigned char *ascii_data, *bin_data; + int leftbits = 0; + unsigned char this_ch; + unsigned int leftchar = 0; + PyObject *rv; + Py_ssize_t len; + + if ( !PyArg_ParseTuple(args, "s*:b2a_hqx", &pbin) ) + return NULL; + bin_data = pbin.buf; + len = pbin.len; + + assert(len >= 0); + + if (len > PY_SSIZE_T_MAX / 2 - 2) { + PyBuffer_Release(&pbin); + return PyErr_NoMemory(); + } + + /* Allocate a buffer that is at least large enough */ + if ( (rv=PyString_FromStringAndSize(NULL, len*2+2)) == NULL ) { + PyBuffer_Release(&pbin); + return NULL; + } + ascii_data = (unsigned char *)PyString_AS_STRING(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]; + } + if (_PyString_Resize(&rv, + (ascii_data - + (unsigned char *)PyString_AS_STRING(rv))) < 0) { + Py_DECREF(rv); + rv = NULL; + } + PyBuffer_Release(&pbin); + return rv; +} + +PyDoc_STRVAR(doc_rledecode_hqx, "Decode hexbin RLE-coded string"); + +static PyObject * +binascii_rledecode_hqx(PyObject *self, PyObject *args) +{ + Py_buffer pin; + unsigned char *in_data, *out_data; + unsigned char in_byte, in_repeat; + PyObject *rv; + Py_ssize_t in_len, out_len, out_len_left; + + if ( !PyArg_ParseTuple(args, "s*:rledecode_hqx", &pin) ) + return NULL; + in_data = pin.buf; + in_len = pin.len; + + assert(in_len >= 0); + + /* Empty string is a special case */ + if ( in_len == 0 ) { + PyBuffer_Release(&pin); + return PyString_FromStringAndSize("", 0); + } + else if (in_len > PY_SSIZE_T_MAX / 2) { + PyBuffer_Release(&pin); + return PyErr_NoMemory(); + } + + /* Allocate a buffer of reasonable size. Resized when needed */ + out_len = in_len*2; + if ( (rv=PyString_FromStringAndSize(NULL, out_len)) == NULL ) { + PyBuffer_Release(&pin); + return NULL; + } + out_len_left = out_len; + out_data = (unsigned char *)PyString_AS_STRING(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); \ + PyBuffer_Release(&pin); \ + return NULL; \ + } \ + b = *in_data++; \ + } while(0) + +#define OUTBYTE(b) \ + do { \ + if ( --out_len_left < 0 ) { \ + if ( out_len > PY_SSIZE_T_MAX / 2) return PyErr_NoMemory(); \ + if (_PyString_Resize(&rv, 2*out_len) < 0) \ + { Py_DECREF(rv); PyBuffer_Release(&pin); return NULL; } \ + out_data = (unsigned char *)PyString_AS_STRING(rv) \ + + out_len; \ + out_len_left = out_len-1; \ + 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"); + PyBuffer_Release(&pin); + 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); + } + } + if (_PyString_Resize(&rv, + (out_data - + (unsigned char *)PyString_AS_STRING(rv))) < 0) { + Py_DECREF(rv); + rv = NULL; + } + PyBuffer_Release(&pin); + return rv; +} + +PyDoc_STRVAR(doc_crc_hqx, +"(data, oldcrc) -> newcrc. Compute hqx CRC incrementally"); + +static PyObject * +binascii_crc_hqx(PyObject *self, PyObject *args) +{ + Py_buffer pin; + unsigned char *bin_data; + unsigned int crc; + Py_ssize_t len; + + if ( !PyArg_ParseTuple(args, "s*i:crc_hqx", &pin, &crc) ) + return NULL; + bin_data = pin.buf; + len = pin.len; + + while(len-- > 0) { + crc=((crc<<8)&0xff00)^crctab_hqx[((crc>>8)&0xff)^*bin_data++]; + } + + PyBuffer_Release(&pin); + return Py_BuildValue("i", crc); +} + +PyDoc_STRVAR(doc_crc32, +"(data, oldcrc = 0) -> newcrc. Compute CRC-32 incrementally"); + +#ifdef USE_ZLIB_CRC32 +/* This was taken from zlibmodule.c PyZlib_crc32 (but is PY_SSIZE_T_CLEAN) */ +static PyObject * +binascii_crc32(PyObject *self, PyObject *args) +{ + unsigned int crc32val = 0; /* crc32(0L, Z_NULL, 0) */ + Py_buffer pbuf; + Byte *buf; + Py_ssize_t len; + int signed_val; + + if (!PyArg_ParseTuple(args, "s*|I:crc32", &pbuf, &crc32val)) + return NULL; + /* In Python 2.x we return a signed integer regardless of native platform + * long size (the 32bit unsigned long is treated as 32-bit signed and sign + * extended into a 64-bit long inside the integer object). 3.0 does the + * right thing and returns unsigned. http://bugs.python.org/issue1202 */ + buf = (Byte*)pbuf.buf; + len = pbuf.len; + signed_val = crc32(crc32val, buf, len); + PyBuffer_Release(&pbuf); + return PyInt_FromLong(signed_val); +} +#else /* 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 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 +}; + +static PyObject * +binascii_crc32(PyObject *self, PyObject *args) +{ /* By Jim Ahlstrom; All rights transferred to CNRI */ + Py_buffer pbin; + unsigned char *bin_data; + unsigned int crc = 0U; /* initial value of CRC */ + Py_ssize_t len; + int result; + + if ( !PyArg_ParseTuple(args, "s*|I:crc32", &pbin, &crc) ) + return NULL; + bin_data = pbin.buf; + len = pbin.len; + + crc = ~ crc; + while (len-- > 0) + crc = crc_32_tab[(crc ^ *bin_data++) & 0xffU] ^ (crc >> 8); + /* Note: (crc >> 8) MUST zero fill on left */ + + result = (int)(crc ^ 0xFFFFFFFFU); + PyBuffer_Release(&pbin); + return PyInt_FromLong(result); +} +#endif /* USE_ZLIB_CRC32 */ + + +static PyObject * +binascii_hexlify(PyObject *self, PyObject *args) +{ + Py_buffer parg; + char* argbuf; + Py_ssize_t arglen; + PyObject *retval; + char* retbuf; + Py_ssize_t i, j; + + if (!PyArg_ParseTuple(args, "s*:b2a_hex", &parg)) + return NULL; + argbuf = parg.buf; + arglen = parg.len; + + assert(arglen >= 0); + if (arglen > PY_SSIZE_T_MAX / 2) { + PyBuffer_Release(&parg); + return PyErr_NoMemory(); + } + + retval = PyString_FromStringAndSize(NULL, arglen*2); + if (!retval) { + PyBuffer_Release(&parg); + return NULL; + } + retbuf = PyString_AS_STRING(retval); + + /* make hex version of string, taken from shamodule.c */ + for (i=j=0; i < arglen; i++) { + char c; + c = (argbuf[i] >> 4) & 0xf; + c = (c>9) ? c+'a'-10 : c + '0'; + retbuf[j++] = c; + c = argbuf[i] & 0xf; + c = (c>9) ? c+'a'-10 : c + '0'; + retbuf[j++] = c; + } + PyBuffer_Release(&parg); + return retval; +} + +PyDoc_STRVAR(doc_hexlify, +"b2a_hex(data) -> s; Hexadecimal representation of binary data.\n\ +\n\ +This function is also available as \"hexlify()\"."); + + +static int +to_int(int c) +{ + if (isdigit(c)) + return c - '0'; + else { + if (isupper(c)) + c = tolower(c); + if (c >= 'a' && c <= 'f') + return c - 'a' + 10; + } + return -1; +} + + +static PyObject * +binascii_unhexlify(PyObject *self, PyObject *args) +{ + Py_buffer parg; + char* argbuf; + Py_ssize_t arglen; + PyObject *retval; + char* retbuf; + Py_ssize_t i, j; + + if (!PyArg_ParseTuple(args, "s*:a2b_hex", &parg)) + return NULL; + argbuf = parg.buf; + arglen = parg.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) { + PyBuffer_Release(&parg); + PyErr_SetString(PyExc_TypeError, "Odd-length string"); + return NULL; + } + + retval = PyString_FromStringAndSize(NULL, (arglen/2)); + if (!retval) { + PyBuffer_Release(&parg); + return NULL; + } + retbuf = PyString_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(PyExc_TypeError, + "Non-hexadecimal digit found"); + goto finally; + } + retbuf[j++] = (top << 4) + bot; + } + PyBuffer_Release(&parg); + return retval; + + finally: + PyBuffer_Release(&parg); + Py_DECREF(retval); + return NULL; +} + +PyDoc_STRVAR(doc_unhexlify, +"a2b_hex(hexstr) -> s; Binary data of hexadecimal representation.\n\ +\n\ +hexstr must contain an even number of hex digits (upper or lower case).\n\ +This function is also available as \"unhexlify()\""); + +static 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 + +PyDoc_STRVAR(doc_a2b_qp, "Decode a string of qp-encoded data"); + +static PyObject* +binascii_a2b_qp(PyObject *self, PyObject *args, PyObject *kwargs) +{ + Py_ssize_t in, out; + char ch; + Py_buffer pdata; + unsigned char *data, *odata; + Py_ssize_t datalen = 0; + PyObject *rv; + static char *kwlist[] = {"data", "header", NULL}; + int header = 0; + + if (!PyArg_ParseTupleAndKeywords(args, kwargs, "s*|i", kwlist, &pdata, + &header)) + return NULL; + data = pdata.buf; + datalen = pdata.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) { + PyBuffer_Release(&pdata); + PyErr_NoMemory(); + return NULL; + } + memset(odata, 0, datalen); + + in = out = 0; + while (in < datalen) { + if (data[in] == '=') { + in++; + if (in >= datalen) break; + /* Soft line breaks */ + if ((data[in] == '\n') || (data[in] == '\r')) { + if (data[in] != '\n') { + while (in < datalen && data[in] != '\n') in++; + } + if (in < datalen) in++; + } + else if (data[in] == '=') { + /* broken case from broken python qp */ + odata[out++] = '='; + in++; + } + else if (((data[in] >= 'A' && data[in] <= 'F') || + (data[in] >= 'a' && data[in] <= 'f') || + (data[in] >= '0' && data[in] <= '9')) && + ((data[in+1] >= 'A' && data[in+1] <= 'F') || + (data[in+1] >= 'a' && data[in+1] <= 'f') || + (data[in+1] >= '0' && data[in+1] <= '9'))) { + /* hexval */ + ch = hexval(data[in]) << 4; + in++; + ch |= hexval(data[in]); + in++; + odata[out++] = ch; + } + else { + odata[out++] = '='; + } + } + else if (header && data[in] == '_') { + odata[out++] = ' '; + in++; + } + else { + odata[out] = data[in]; + in++; + out++; + } + } + if ((rv = PyString_FromStringAndSize((char *)odata, out)) == NULL) { + PyBuffer_Release(&pdata); + PyMem_Free(odata); + return NULL; + } + PyBuffer_Release(&pdata); + 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; +} + +PyDoc_STRVAR(doc_b2a_qp, +"b2a_qp(data, quotetabs=0, istext=1, header=0) -> s; \n\ + Encode a string using quoted-printable encoding. \n\ +\n\ +On encoding, when istext is set, newlines are not encoded, and white \n\ +space at end of lines is. When istext is not set, \\r and \\n (CR/LF) are \n\ +both encoded. When quotetabs is set, space and tabs are encoded."); + +/* 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 */ +static PyObject* +binascii_b2a_qp (PyObject *self, PyObject *args, PyObject *kwargs) +{ + Py_ssize_t in, out; + Py_buffer pdata; + unsigned char *data, *odata; + Py_ssize_t datalen = 0, odatalen = 0; + PyObject *rv; + unsigned int linelen = 0; + static char *kwlist[] = {"data", "quotetabs", "istext", + "header", NULL}; + int istext = 1; + int quotetabs = 0; + int header = 0; + unsigned char ch; + int crlf = 0; + unsigned char *p; + + if (!PyArg_ParseTupleAndKeywords(args, kwargs, "s*|iii", kwlist, &pdata, + "etabs, &istext, &header)) + return NULL; + data = pdata.buf; + datalen = pdata.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 = (unsigned char *) memchr(data, '\n', datalen); + if ((p != NULL) && (p > data) && (*(p-1) == '\r')) + crlf = 1; + + /* First, scan to see how many characters need to be encoded */ + in = 0; + while (in < datalen) { + if ((data[in] > 126) || + (data[in] == '=') || + (header && data[in] == '_') || + ((data[in] == '.') && (linelen == 0) && + (data[in+1] == '\n' || data[in+1] == '\r' || data[in+1] == 0)) || + (!istext && ((data[in] == '\r') || (data[in] == '\n'))) || + ((data[in] == '\t' || data[in] == ' ') && (in + 1 == datalen)) || + ((data[in] < 33) && + (data[in] != '\r') && (data[in] != '\n') && + (quotetabs || + (!quotetabs && ((data[in] != '\t') && (data[in] != ' ')))))) + { + if ((linelen + 3) >= MAXLINESIZE) { + linelen = 0; + if (crlf) + odatalen += 3; + else + odatalen += 2; + } + linelen += 3; + odatalen += 3; + in++; + } + else { + if (istext && + ((data[in] == '\n') || + ((in+1 < datalen) && (data[in] == '\r') && + (data[in+1] == '\n')))) + { + linelen = 0; + /* Protect against whitespace on end of line */ + if (in && ((data[in-1] == ' ') || (data[in-1] == '\t'))) + odatalen += 2; + if (crlf) + odatalen += 2; + else + odatalen += 1; + if (data[in] == '\r') + in += 2; + else + in++; + } + else { + if ((in + 1 != datalen) && + (data[in+1] != '\n') && + (linelen + 1) >= MAXLINESIZE) { + linelen = 0; + if (crlf) + odatalen += 3; + else + odatalen += 2; + } + linelen++; + odatalen++; + in++; + } + } + } + + /* 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) { + PyBuffer_Release(&pdata); + PyErr_NoMemory(); + return NULL; + } + memset(odata, 0, odatalen); + + in = out = linelen = 0; + while (in < datalen) { + if ((data[in] > 126) || + (data[in] == '=') || + (header && data[in] == '_') || + ((data[in] == '.') && (linelen == 0) && + (data[in+1] == '\n' || data[in+1] == '\r' || data[in+1] == 0)) || + (!istext && ((data[in] == '\r') || (data[in] == '\n'))) || + ((data[in] == '\t' || data[in] == ' ') && (in + 1 == datalen)) || + ((data[in] < 33) && + (data[in] != '\r') && (data[in] != '\n') && + (quotetabs || + (!quotetabs && ((data[in] != '\t') && (data[in] != ' ')))))) + { + if ((linelen + 3 )>= MAXLINESIZE) { + odata[out++] = '='; + if (crlf) odata[out++] = '\r'; + odata[out++] = '\n'; + linelen = 0; + } + odata[out++] = '='; + to_hex(data[in], &odata[out]); + out += 2; + in++; + linelen += 3; + } + else { + if (istext && + ((data[in] == '\n') || + ((in+1 < datalen) && (data[in] == '\r') && + (data[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 (data[in] == '\r') + in += 2; + else + in++; + } + else { + if ((in + 1 != datalen) && + (data[in+1] != '\n') && + (linelen + 1) >= MAXLINESIZE) { + odata[out++] = '='; + if (crlf) odata[out++] = '\r'; + odata[out++] = '\n'; + linelen = 0; + } + linelen++; + if (header && data[in] == ' ') { + odata[out++] = '_'; + in++; + } + else { + odata[out++] = data[in++]; + } + } + } + } + if ((rv = PyString_FromStringAndSize((char *)odata, out)) == NULL) { + PyBuffer_Release(&pdata); + PyMem_Free(odata); + return NULL; + } + PyBuffer_Release(&pdata); + PyMem_Free(odata); + return rv; +} + +/* List of functions defined in the module */ + +static struct PyMethodDef binascii_module_methods[] = { + {"a2b_uu", binascii_a2b_uu, METH_VARARGS, doc_a2b_uu}, + {"b2a_uu", binascii_b2a_uu, METH_VARARGS, doc_b2a_uu}, + {"a2b_base64", binascii_a2b_base64, METH_VARARGS, doc_a2b_base64}, + {"b2a_base64", binascii_b2a_base64, METH_VARARGS, doc_b2a_base64}, + {"a2b_hqx", binascii_a2b_hqx, METH_VARARGS, doc_a2b_hqx}, + {"b2a_hqx", binascii_b2a_hqx, METH_VARARGS, doc_b2a_hqx}, + {"b2a_hex", binascii_hexlify, METH_VARARGS, doc_hexlify}, + {"a2b_hex", binascii_unhexlify, METH_VARARGS, doc_unhexlify}, + {"hexlify", binascii_hexlify, METH_VARARGS, doc_hexlify}, + {"unhexlify", binascii_unhexlify, METH_VARARGS, doc_unhexlify}, + {"rlecode_hqx", binascii_rlecode_hqx, METH_VARARGS, doc_rlecode_hqx}, + {"rledecode_hqx", binascii_rledecode_hqx, METH_VARARGS, + doc_rledecode_hqx}, + {"crc_hqx", binascii_crc_hqx, METH_VARARGS, doc_crc_hqx}, + {"crc32", binascii_crc32, METH_VARARGS, doc_crc32}, + {"a2b_qp", (PyCFunction)binascii_a2b_qp, METH_VARARGS | METH_KEYWORDS, + doc_a2b_qp}, + {"b2a_qp", (PyCFunction)binascii_b2a_qp, METH_VARARGS | METH_KEYWORDS, + doc_b2a_qp}, + {NULL, NULL} /* sentinel */ +}; + + +/* Initialization function for the module (*must* be called initbinascii) */ +PyDoc_STRVAR(doc_binascii, "Conversion between binary data and ASCII"); + +PyMODINIT_FUNC +initbinascii(void) +{ + PyObject *m, *d, *x; + + /* Create the module and add the functions */ + m = Py_InitModule("binascii", binascii_module_methods); + if (m == NULL) + return; + + d = PyModule_GetDict(m); + x = PyString_FromString(doc_binascii); + PyDict_SetItemString(d, "__doc__", x); + Py_XDECREF(x); + + Error = PyErr_NewException("binascii.Error", NULL, NULL); + PyDict_SetItemString(d, "Error", Error); + Incomplete = PyErr_NewException("binascii.Incomplete", NULL, NULL); + PyDict_SetItemString(d, "Incomplete", Incomplete); +} -- cgit v1.2.3