+++ /dev/null
-/*\r
-** Routines to represent binary data in ASCII and vice-versa\r
-**\r
-** This module currently supports the following encodings:\r
-** uuencode:\r
-** each line encodes 45 bytes (except possibly the last)\r
-** First char encodes (binary) length, rest data\r
-** each char encodes 6 bits, as follows:\r
-** binary: 01234567 abcdefgh ijklmnop\r
-** ascii: 012345 67abcd efghij klmnop\r
-** ASCII encoding method is "excess-space": 000000 is encoded as ' ', etc.\r
-** short binary data is zero-extended (so the bits are always in the\r
-** right place), this does *not* reflect in the length.\r
-** base64:\r
-** Line breaks are insignificant, but lines are at most 76 chars\r
-** each char encodes 6 bits, in similar order as uucode/hqx. Encoding\r
-** is done via a table.\r
-** Short binary data is filled (in ASCII) with '='.\r
-** hqx:\r
-** File starts with introductory text, real data starts and ends\r
-** with colons.\r
-** Data consists of three similar parts: info, datafork, resourcefork.\r
-** Each part is protected (at the end) with a 16-bit crc\r
-** The binary data is run-length encoded, and then ascii-fied:\r
-** binary: 01234567 abcdefgh ijklmnop\r
-** ascii: 012345 67abcd efghij klmnop\r
-** ASCII encoding is table-driven, see the code.\r
-** Short binary data results in the runt ascii-byte being output with\r
-** the bits in the right place.\r
-**\r
-** While I was reading dozens of programs that encode or decode the formats\r
-** here (documentation? hihi:-) I have formulated Jansen's Observation:\r
-**\r
-** Programs that encode binary data in ASCII are written in\r
-** such a style that they are as unreadable as possible. Devices used\r
-** include unnecessary global variables, burying important tables\r
-** in unrelated sourcefiles, putting functions in include files,\r
-** using seemingly-descriptive variable names for different purposes,\r
-** calls to empty subroutines and a host of others.\r
-**\r
-** I have attempted to break with this tradition, but I guess that that\r
-** does make the performance sub-optimal. Oh well, too bad...\r
-**\r
-** Jack Jansen, CWI, July 1995.\r
-**\r
-** Added support for quoted-printable encoding, based on rfc 1521 et al\r
-** quoted-printable encoding specifies that non printable characters (anything\r
-** below 32 and above 126) be encoded as =XX where XX is the hexadecimal value\r
-** of the character. It also specifies some other behavior to enable 8bit data\r
-** in a mail message with little difficulty (maximum line sizes, protecting\r
-** some cases of whitespace, etc).\r
-**\r
-** Brandon Long, September 2001.\r
-*/\r
-\r
-#define PY_SSIZE_T_CLEAN\r
-\r
-#include "Python.h"\r
-#ifdef USE_ZLIB_CRC32\r
-#include "zlib.h"\r
-#endif\r
-\r
-static PyObject *Error;\r
-static PyObject *Incomplete;\r
-\r
-/*\r
-** hqx lookup table, ascii->binary.\r
-*/\r
-\r
-#define RUNCHAR 0x90\r
-\r
-#define DONE 0x7F\r
-#define SKIP 0x7E\r
-#define FAIL 0x7D\r
-\r
-static unsigned char table_a2b_hqx[256] = {\r
-/* ^@ ^A ^B ^C ^D ^E ^F ^G */\r
-/* 0*/ FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL,\r
-/* \b \t \n ^K ^L \r ^N ^O */\r
-/* 1*/ FAIL, FAIL, SKIP, FAIL, FAIL, SKIP, FAIL, FAIL,\r
-/* ^P ^Q ^R ^S ^T ^U ^V ^W */\r
-/* 2*/ FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL,\r
-/* ^X ^Y ^Z ^[ ^\ ^] ^^ ^_ */\r
-/* 3*/ FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL,\r
-/* ! " # $ % & ' */\r
-/* 4*/ FAIL, 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06,\r
-/* ( ) * + , - . / */\r
-/* 5*/ 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, FAIL, FAIL,\r
-/* 0 1 2 3 4 5 6 7 */\r
-/* 6*/ 0x0D, 0x0E, 0x0F, 0x10, 0x11, 0x12, 0x13, FAIL,\r
-/* 8 9 : ; < = > ? */\r
-/* 7*/ 0x14, 0x15, DONE, FAIL, FAIL, FAIL, FAIL, FAIL,\r
-/* @ A B C D E F G */\r
-/* 8*/ 0x16, 0x17, 0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D,\r
-/* H I J K L M N O */\r
-/* 9*/ 0x1E, 0x1F, 0x20, 0x21, 0x22, 0x23, 0x24, FAIL,\r
-/* P Q R S T U V W */\r
-/*10*/ 0x25, 0x26, 0x27, 0x28, 0x29, 0x2A, 0x2B, FAIL,\r
-/* X Y Z [ \ ] ^ _ */\r
-/*11*/ 0x2C, 0x2D, 0x2E, 0x2F, FAIL, FAIL, FAIL, FAIL,\r
-/* ` a b c d e f g */\r
-/*12*/ 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, FAIL,\r
-/* h i j k l m n o */\r
-/*13*/ 0x37, 0x38, 0x39, 0x3A, 0x3B, 0x3C, FAIL, FAIL,\r
-/* p q r s t u v w */\r
-/*14*/ 0x3D, 0x3E, 0x3F, FAIL, FAIL, FAIL, FAIL, FAIL,\r
-/* x y z { | } ~ ^? */\r
-/*15*/ FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL,\r
-/*16*/ FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL,\r
- FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL,\r
- FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL,\r
- FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL,\r
- FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL,\r
- FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL,\r
- FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL,\r
- FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL,\r
- FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL,\r
- FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL,\r
- FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL,\r
- FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL,\r
- FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL,\r
- FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL,\r
- FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL,\r
- FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL,\r
-};\r
-\r
-static unsigned char table_b2a_hqx[] =\r
-"!\"#$%&'()*+,-012345689@ABCDEFGHIJKLMNPQRSTUVXYZ[`abcdefhijklmpqr";\r
-\r
-static char table_a2b_base64[] = {\r
- -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1,\r
- -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1,\r
- -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,62, -1,-1,-1,63,\r
- 52,53,54,55, 56,57,58,59, 60,61,-1,-1, -1, 0,-1,-1, /* Note PAD->0 */\r
- -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,10, 11,12,13,14,\r
- 15,16,17,18, 19,20,21,22, 23,24,25,-1, -1,-1,-1,-1,\r
- -1,26,27,28, 29,30,31,32, 33,34,35,36, 37,38,39,40,\r
- 41,42,43,44, 45,46,47,48, 49,50,51,-1, -1,-1,-1,-1\r
-};\r
-\r
-#define BASE64_PAD '='\r
-\r
-/* Max binary chunk size; limited only by available memory */\r
-#define BASE64_MAXBIN (PY_SSIZE_T_MAX/2 - sizeof(PyStringObject) - 3)\r
-\r
-static unsigned char table_b2a_base64[] =\r
-"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";\r
-\r
-\r
-\r
-static unsigned short crctab_hqx[256] = {\r
- 0x0000, 0x1021, 0x2042, 0x3063, 0x4084, 0x50a5, 0x60c6, 0x70e7,\r
- 0x8108, 0x9129, 0xa14a, 0xb16b, 0xc18c, 0xd1ad, 0xe1ce, 0xf1ef,\r
- 0x1231, 0x0210, 0x3273, 0x2252, 0x52b5, 0x4294, 0x72f7, 0x62d6,\r
- 0x9339, 0x8318, 0xb37b, 0xa35a, 0xd3bd, 0xc39c, 0xf3ff, 0xe3de,\r
- 0x2462, 0x3443, 0x0420, 0x1401, 0x64e6, 0x74c7, 0x44a4, 0x5485,\r
- 0xa56a, 0xb54b, 0x8528, 0x9509, 0xe5ee, 0xf5cf, 0xc5ac, 0xd58d,\r
- 0x3653, 0x2672, 0x1611, 0x0630, 0x76d7, 0x66f6, 0x5695, 0x46b4,\r
- 0xb75b, 0xa77a, 0x9719, 0x8738, 0xf7df, 0xe7fe, 0xd79d, 0xc7bc,\r
- 0x48c4, 0x58e5, 0x6886, 0x78a7, 0x0840, 0x1861, 0x2802, 0x3823,\r
- 0xc9cc, 0xd9ed, 0xe98e, 0xf9af, 0x8948, 0x9969, 0xa90a, 0xb92b,\r
- 0x5af5, 0x4ad4, 0x7ab7, 0x6a96, 0x1a71, 0x0a50, 0x3a33, 0x2a12,\r
- 0xdbfd, 0xcbdc, 0xfbbf, 0xeb9e, 0x9b79, 0x8b58, 0xbb3b, 0xab1a,\r
- 0x6ca6, 0x7c87, 0x4ce4, 0x5cc5, 0x2c22, 0x3c03, 0x0c60, 0x1c41,\r
- 0xedae, 0xfd8f, 0xcdec, 0xddcd, 0xad2a, 0xbd0b, 0x8d68, 0x9d49,\r
- 0x7e97, 0x6eb6, 0x5ed5, 0x4ef4, 0x3e13, 0x2e32, 0x1e51, 0x0e70,\r
- 0xff9f, 0xefbe, 0xdfdd, 0xcffc, 0xbf1b, 0xaf3a, 0x9f59, 0x8f78,\r
- 0x9188, 0x81a9, 0xb1ca, 0xa1eb, 0xd10c, 0xc12d, 0xf14e, 0xe16f,\r
- 0x1080, 0x00a1, 0x30c2, 0x20e3, 0x5004, 0x4025, 0x7046, 0x6067,\r
- 0x83b9, 0x9398, 0xa3fb, 0xb3da, 0xc33d, 0xd31c, 0xe37f, 0xf35e,\r
- 0x02b1, 0x1290, 0x22f3, 0x32d2, 0x4235, 0x5214, 0x6277, 0x7256,\r
- 0xb5ea, 0xa5cb, 0x95a8, 0x8589, 0xf56e, 0xe54f, 0xd52c, 0xc50d,\r
- 0x34e2, 0x24c3, 0x14a0, 0x0481, 0x7466, 0x6447, 0x5424, 0x4405,\r
- 0xa7db, 0xb7fa, 0x8799, 0x97b8, 0xe75f, 0xf77e, 0xc71d, 0xd73c,\r
- 0x26d3, 0x36f2, 0x0691, 0x16b0, 0x6657, 0x7676, 0x4615, 0x5634,\r
- 0xd94c, 0xc96d, 0xf90e, 0xe92f, 0x99c8, 0x89e9, 0xb98a, 0xa9ab,\r
- 0x5844, 0x4865, 0x7806, 0x6827, 0x18c0, 0x08e1, 0x3882, 0x28a3,\r
- 0xcb7d, 0xdb5c, 0xeb3f, 0xfb1e, 0x8bf9, 0x9bd8, 0xabbb, 0xbb9a,\r
- 0x4a75, 0x5a54, 0x6a37, 0x7a16, 0x0af1, 0x1ad0, 0x2ab3, 0x3a92,\r
- 0xfd2e, 0xed0f, 0xdd6c, 0xcd4d, 0xbdaa, 0xad8b, 0x9de8, 0x8dc9,\r
- 0x7c26, 0x6c07, 0x5c64, 0x4c45, 0x3ca2, 0x2c83, 0x1ce0, 0x0cc1,\r
- 0xef1f, 0xff3e, 0xcf5d, 0xdf7c, 0xaf9b, 0xbfba, 0x8fd9, 0x9ff8,\r
- 0x6e17, 0x7e36, 0x4e55, 0x5e74, 0x2e93, 0x3eb2, 0x0ed1, 0x1ef0,\r
-};\r
-\r
-PyDoc_STRVAR(doc_a2b_uu, "(ascii) -> bin. Decode a line of uuencoded data");\r
-\r
-static PyObject *\r
-binascii_a2b_uu(PyObject *self, PyObject *args)\r
-{\r
- Py_buffer pascii;\r
- unsigned char *ascii_data, *bin_data;\r
- int leftbits = 0;\r
- unsigned char this_ch;\r
- unsigned int leftchar = 0;\r
- PyObject *rv;\r
- Py_ssize_t ascii_len, bin_len;\r
-\r
- if ( !PyArg_ParseTuple(args, "s*:a2b_uu", &pascii) )\r
- return NULL;\r
- ascii_data = pascii.buf;\r
- ascii_len = pascii.len;\r
-\r
- assert(ascii_len >= 0);\r
-\r
- /* First byte: binary data length (in bytes) */\r
- bin_len = (*ascii_data++ - ' ') & 077;\r
- ascii_len--;\r
-\r
- /* Allocate the buffer */\r
- if ( (rv=PyString_FromStringAndSize(NULL, bin_len)) == NULL ) {\r
- PyBuffer_Release(&pascii);\r
- return NULL;\r
- }\r
- bin_data = (unsigned char *)PyString_AS_STRING(rv);\r
-\r
- for( ; bin_len > 0 ; ascii_len--, ascii_data++ ) {\r
- /* XXX is it really best to add NULs if there's no more data */\r
- this_ch = (ascii_len > 0) ? *ascii_data : 0;\r
- if ( this_ch == '\n' || this_ch == '\r' || ascii_len <= 0) {\r
- /*\r
- ** Whitespace. Assume some spaces got eaten at\r
- ** end-of-line. (We check this later)\r
- */\r
- this_ch = 0;\r
- } else {\r
- /* Check the character for legality\r
- ** The 64 in stead of the expected 63 is because\r
- ** there are a few uuencodes out there that use\r
- ** '`' as zero instead of space.\r
- */\r
- if ( this_ch < ' ' || this_ch > (' ' + 64)) {\r
- PyErr_SetString(Error, "Illegal char");\r
- PyBuffer_Release(&pascii);\r
- Py_DECREF(rv);\r
- return NULL;\r
- }\r
- this_ch = (this_ch - ' ') & 077;\r
- }\r
- /*\r
- ** Shift it in on the low end, and see if there's\r
- ** a byte ready for output.\r
- */\r
- leftchar = (leftchar << 6) | (this_ch);\r
- leftbits += 6;\r
- if ( leftbits >= 8 ) {\r
- leftbits -= 8;\r
- *bin_data++ = (leftchar >> leftbits) & 0xff;\r
- leftchar &= ((1 << leftbits) - 1);\r
- bin_len--;\r
- }\r
- }\r
- /*\r
- ** Finally, check that if there's anything left on the line\r
- ** that it's whitespace only.\r
- */\r
- while( ascii_len-- > 0 ) {\r
- this_ch = *ascii_data++;\r
- /* Extra '`' may be written as padding in some cases */\r
- if ( this_ch != ' ' && this_ch != ' '+64 &&\r
- this_ch != '\n' && this_ch != '\r' ) {\r
- PyErr_SetString(Error, "Trailing garbage");\r
- PyBuffer_Release(&pascii);\r
- Py_DECREF(rv);\r
- return NULL;\r
- }\r
- }\r
- PyBuffer_Release(&pascii);\r
- return rv;\r
-}\r
-\r
-PyDoc_STRVAR(doc_b2a_uu, "(bin) -> ascii. Uuencode line of data");\r
-\r
-static PyObject *\r
-binascii_b2a_uu(PyObject *self, PyObject *args)\r
-{\r
- Py_buffer pbin;\r
- unsigned char *ascii_data, *bin_data;\r
- int leftbits = 0;\r
- unsigned char this_ch;\r
- unsigned int leftchar = 0;\r
- PyObject *rv;\r
- Py_ssize_t bin_len;\r
-\r
- if ( !PyArg_ParseTuple(args, "s*:b2a_uu", &pbin) )\r
- return NULL;\r
- bin_data = pbin.buf;\r
- bin_len = pbin.len;\r
- if ( bin_len > 45 ) {\r
- /* The 45 is a limit that appears in all uuencode's */\r
- PyErr_SetString(Error, "At most 45 bytes at once");\r
- PyBuffer_Release(&pbin);\r
- return NULL;\r
- }\r
-\r
- /* We're lazy and allocate to much (fixed up later) */\r
- if ( (rv=PyString_FromStringAndSize(NULL, 2 + (bin_len+2)/3*4)) == NULL ) {\r
- PyBuffer_Release(&pbin);\r
- return NULL;\r
- }\r
- ascii_data = (unsigned char *)PyString_AS_STRING(rv);\r
-\r
- /* Store the length */\r
- *ascii_data++ = ' ' + (bin_len & 077);\r
-\r
- for( ; bin_len > 0 || leftbits != 0 ; bin_len--, bin_data++ ) {\r
- /* Shift the data (or padding) into our buffer */\r
- if ( bin_len > 0 ) /* Data */\r
- leftchar = (leftchar << 8) | *bin_data;\r
- else /* Padding */\r
- leftchar <<= 8;\r
- leftbits += 8;\r
-\r
- /* See if there are 6-bit groups ready */\r
- while ( leftbits >= 6 ) {\r
- this_ch = (leftchar >> (leftbits-6)) & 0x3f;\r
- leftbits -= 6;\r
- *ascii_data++ = this_ch + ' ';\r
- }\r
- }\r
- *ascii_data++ = '\n'; /* Append a courtesy newline */\r
-\r
- /* rv is cleared on error */\r
- (void)_PyString_Resize(&rv,\r
- (ascii_data -\r
- (unsigned char *)PyString_AS_STRING(rv)));\r
- PyBuffer_Release(&pbin);\r
- return rv;\r
-}\r
-\r
-\r
-static int\r
-binascii_find_valid(unsigned char *s, Py_ssize_t slen, int num)\r
-{\r
- /* Finds & returns the (num+1)th\r
- ** valid character for base64, or -1 if none.\r
- */\r
-\r
- int ret = -1;\r
- unsigned char c, b64val;\r
-\r
- while ((slen > 0) && (ret == -1)) {\r
- c = *s;\r
- b64val = table_a2b_base64[c & 0x7f];\r
- if ( ((c <= 0x7f) && (b64val != (unsigned char)-1)) ) {\r
- if (num == 0)\r
- ret = *s;\r
- num--;\r
- }\r
-\r
- s++;\r
- slen--;\r
- }\r
- return ret;\r
-}\r
-\r
-PyDoc_STRVAR(doc_a2b_base64, "(ascii) -> bin. Decode a line of base64 data");\r
-\r
-static PyObject *\r
-binascii_a2b_base64(PyObject *self, PyObject *args)\r
-{\r
- Py_buffer pascii;\r
- unsigned char *ascii_data, *bin_data;\r
- int leftbits = 0;\r
- unsigned char this_ch;\r
- unsigned int leftchar = 0;\r
- PyObject *rv;\r
- Py_ssize_t ascii_len, bin_len;\r
- int quad_pos = 0;\r
-\r
- if ( !PyArg_ParseTuple(args, "s*:a2b_base64", &pascii) )\r
- return NULL;\r
- ascii_data = pascii.buf;\r
- ascii_len = pascii.len;\r
-\r
- assert(ascii_len >= 0);\r
-\r
- if (ascii_len > PY_SSIZE_T_MAX - 3) {\r
- PyBuffer_Release(&pascii);\r
- return PyErr_NoMemory();\r
- }\r
-\r
- bin_len = ((ascii_len+3)/4)*3; /* Upper bound, corrected later */\r
-\r
- /* Allocate the buffer */\r
- if ( (rv=PyString_FromStringAndSize(NULL, bin_len)) == NULL ) {\r
- PyBuffer_Release(&pascii);\r
- return NULL;\r
- }\r
- bin_data = (unsigned char *)PyString_AS_STRING(rv);\r
- bin_len = 0;\r
-\r
- for( ; ascii_len > 0; ascii_len--, ascii_data++) {\r
- this_ch = *ascii_data;\r
-\r
- if (this_ch > 0x7f ||\r
- this_ch == '\r' || this_ch == '\n' || this_ch == ' ')\r
- continue;\r
-\r
- /* Check for pad sequences and ignore\r
- ** the invalid ones.\r
- */\r
- if (this_ch == BASE64_PAD) {\r
- if ( (quad_pos < 2) ||\r
- ((quad_pos == 2) &&\r
- (binascii_find_valid(ascii_data, ascii_len, 1)\r
- != BASE64_PAD)) )\r
- {\r
- continue;\r
- }\r
- else {\r
- /* A pad sequence means no more input.\r
- ** We've already interpreted the data\r
- ** from the quad at this point.\r
- */\r
- leftbits = 0;\r
- break;\r
- }\r
- }\r
-\r
- this_ch = table_a2b_base64[*ascii_data];\r
- if ( this_ch == (unsigned char) -1 )\r
- continue;\r
-\r
- /*\r
- ** Shift it in on the low end, and see if there's\r
- ** a byte ready for output.\r
- */\r
- quad_pos = (quad_pos + 1) & 0x03;\r
- leftchar = (leftchar << 6) | (this_ch);\r
- leftbits += 6;\r
-\r
- if ( leftbits >= 8 ) {\r
- leftbits -= 8;\r
- *bin_data++ = (leftchar >> leftbits) & 0xff;\r
- bin_len++;\r
- leftchar &= ((1 << leftbits) - 1);\r
- }\r
- }\r
-\r
- if (leftbits != 0) {\r
- PyBuffer_Release(&pascii);\r
- PyErr_SetString(Error, "Incorrect padding");\r
- Py_DECREF(rv);\r
- return NULL;\r
- }\r
-\r
- /* And set string size correctly. If the result string is empty\r
- ** (because the input was all invalid) return the shared empty\r
- ** string instead; _PyString_Resize() won't do this for us.\r
- */\r
- if (bin_len > 0) {\r
- /* rv is cleared on error */\r
- (void)_PyString_Resize(&rv, bin_len);\r
- }\r
- else {\r
- Py_DECREF(rv);\r
- rv = PyString_FromStringAndSize("", 0);\r
- }\r
- PyBuffer_Release(&pascii);\r
- return rv;\r
-}\r
-\r
-PyDoc_STRVAR(doc_b2a_base64, "(bin) -> ascii. Base64-code line of data");\r
-\r
-static PyObject *\r
-binascii_b2a_base64(PyObject *self, PyObject *args)\r
-{\r
- Py_buffer pbuf;\r
- unsigned char *ascii_data, *bin_data;\r
- int leftbits = 0;\r
- unsigned char this_ch;\r
- unsigned int leftchar = 0;\r
- PyObject *rv;\r
- Py_ssize_t bin_len;\r
-\r
- if ( !PyArg_ParseTuple(args, "s*:b2a_base64", &pbuf) )\r
- return NULL;\r
- bin_data = pbuf.buf;\r
- bin_len = pbuf.len;\r
-\r
- assert(bin_len >= 0);\r
-\r
- if ( bin_len > BASE64_MAXBIN ) {\r
- PyErr_SetString(Error, "Too much data for base64 line");\r
- PyBuffer_Release(&pbuf);\r
- return NULL;\r
- }\r
-\r
- /* We're lazy and allocate too much (fixed up later).\r
- "+3" leaves room for up to two pad characters and a trailing\r
- newline. Note that 'b' gets encoded as 'Yg==\n' (1 in, 5 out). */\r
- if ( (rv=PyString_FromStringAndSize(NULL, bin_len*2 + 3)) == NULL ) {\r
- PyBuffer_Release(&pbuf);\r
- return NULL;\r
- }\r
- ascii_data = (unsigned char *)PyString_AS_STRING(rv);\r
-\r
- for( ; bin_len > 0 ; bin_len--, bin_data++ ) {\r
- /* Shift the data into our buffer */\r
- leftchar = (leftchar << 8) | *bin_data;\r
- leftbits += 8;\r
-\r
- /* See if there are 6-bit groups ready */\r
- while ( leftbits >= 6 ) {\r
- this_ch = (leftchar >> (leftbits-6)) & 0x3f;\r
- leftbits -= 6;\r
- *ascii_data++ = table_b2a_base64[this_ch];\r
- }\r
- }\r
- if ( leftbits == 2 ) {\r
- *ascii_data++ = table_b2a_base64[(leftchar&3) << 4];\r
- *ascii_data++ = BASE64_PAD;\r
- *ascii_data++ = BASE64_PAD;\r
- } else if ( leftbits == 4 ) {\r
- *ascii_data++ = table_b2a_base64[(leftchar&0xf) << 2];\r
- *ascii_data++ = BASE64_PAD;\r
- }\r
- *ascii_data++ = '\n'; /* Append a courtesy newline */\r
-\r
- /* rv is cleared on error */\r
- (void)_PyString_Resize(&rv,\r
- (ascii_data -\r
- (unsigned char *)PyString_AS_STRING(rv)));\r
- PyBuffer_Release(&pbuf);\r
- return rv;\r
-}\r
-\r
-PyDoc_STRVAR(doc_a2b_hqx, "ascii -> bin, done. Decode .hqx coding");\r
-\r
-static PyObject *\r
-binascii_a2b_hqx(PyObject *self, PyObject *args)\r
-{\r
- Py_buffer pascii;\r
- unsigned char *ascii_data, *bin_data;\r
- int leftbits = 0;\r
- unsigned char this_ch;\r
- unsigned int leftchar = 0;\r
- PyObject *rv;\r
- Py_ssize_t len;\r
- int done = 0;\r
-\r
- if ( !PyArg_ParseTuple(args, "s*:a2b_hqx", &pascii) )\r
- return NULL;\r
- ascii_data = pascii.buf;\r
- len = pascii.len;\r
-\r
- assert(len >= 0);\r
-\r
- if (len > PY_SSIZE_T_MAX - 2) {\r
- PyBuffer_Release(&pascii);\r
- return PyErr_NoMemory();\r
- }\r
-\r
- /* Allocate a string that is too big (fixed later)\r
- Add two to the initial length to prevent interning which\r
- would preclude subsequent resizing. */\r
- if ( (rv=PyString_FromStringAndSize(NULL, len+2)) == NULL ) {\r
- PyBuffer_Release(&pascii);\r
- return NULL;\r
- }\r
- bin_data = (unsigned char *)PyString_AS_STRING(rv);\r
-\r
- for( ; len > 0 ; len--, ascii_data++ ) {\r
- /* Get the byte and look it up */\r
- this_ch = table_a2b_hqx[*ascii_data];\r
- if ( this_ch == SKIP )\r
- continue;\r
- if ( this_ch == FAIL ) {\r
- PyErr_SetString(Error, "Illegal char");\r
- PyBuffer_Release(&pascii);\r
- Py_DECREF(rv);\r
- return NULL;\r
- }\r
- if ( this_ch == DONE ) {\r
- /* The terminating colon */\r
- done = 1;\r
- break;\r
- }\r
-\r
- /* Shift it into the buffer and see if any bytes are ready */\r
- leftchar = (leftchar << 6) | (this_ch);\r
- leftbits += 6;\r
- if ( leftbits >= 8 ) {\r
- leftbits -= 8;\r
- *bin_data++ = (leftchar >> leftbits) & 0xff;\r
- leftchar &= ((1 << leftbits) - 1);\r
- }\r
- }\r
-\r
- if ( leftbits && !done ) {\r
- PyErr_SetString(Incomplete,\r
- "String has incomplete number of bytes");\r
- PyBuffer_Release(&pascii);\r
- Py_DECREF(rv);\r
- return NULL;\r
- }\r
- /* rv is cleared on error */\r
- if (_PyString_Resize(&rv,\r
- (bin_data -\r
- (unsigned char *)PyString_AS_STRING(rv))) == 0) {\r
- PyObject *rrv = Py_BuildValue("Oi", rv, done);\r
- PyBuffer_Release(&pascii);\r
- Py_DECREF(rv);\r
- return rrv;\r
- }\r
-\r
- PyBuffer_Release(&pascii);\r
- return NULL;\r
-}\r
-\r
-PyDoc_STRVAR(doc_rlecode_hqx, "Binhex RLE-code binary data");\r
-\r
-static PyObject *\r
-binascii_rlecode_hqx(PyObject *self, PyObject *args)\r
-{\r
- Py_buffer pbuf;\r
- unsigned char *in_data, *out_data;\r
- PyObject *rv;\r
- unsigned char ch;\r
- Py_ssize_t in, inend, len;\r
-\r
- if ( !PyArg_ParseTuple(args, "s*:rlecode_hqx", &pbuf) )\r
- return NULL;\r
- in_data = pbuf.buf;\r
- len = pbuf.len;\r
-\r
- assert(len >= 0);\r
-\r
- if (len > PY_SSIZE_T_MAX / 2 - 2) {\r
- PyBuffer_Release(&pbuf);\r
- return PyErr_NoMemory();\r
- }\r
-\r
- /* Worst case: output is twice as big as input (fixed later) */\r
- if ( (rv=PyString_FromStringAndSize(NULL, len*2+2)) == NULL ) {\r
- PyBuffer_Release(&pbuf);\r
- return NULL;\r
- }\r
- out_data = (unsigned char *)PyString_AS_STRING(rv);\r
-\r
- for( in=0; in<len; in++) {\r
- ch = in_data[in];\r
- if ( ch == RUNCHAR ) {\r
- /* RUNCHAR. Escape it. */\r
- *out_data++ = RUNCHAR;\r
- *out_data++ = 0;\r
- } else {\r
- /* Check how many following are the same */\r
- for(inend=in+1;\r
- inend<len && in_data[inend] == ch &&\r
- inend < in+255;\r
- inend++) ;\r
- if ( inend - in > 3 ) {\r
- /* More than 3 in a row. Output RLE. */\r
- *out_data++ = ch;\r
- *out_data++ = RUNCHAR;\r
- *out_data++ = inend-in;\r
- in = inend-1;\r
- } else {\r
- /* Less than 3. Output the byte itself */\r
- *out_data++ = ch;\r
- }\r
- }\r
- }\r
- /* rv is cleared on error */\r
- (void)_PyString_Resize(&rv,\r
- (out_data -\r
- (unsigned char *)PyString_AS_STRING(rv)));\r
- PyBuffer_Release(&pbuf);\r
- return rv;\r
-}\r
-\r
-PyDoc_STRVAR(doc_b2a_hqx, "Encode .hqx data");\r
-\r
-static PyObject *\r
-binascii_b2a_hqx(PyObject *self, PyObject *args)\r
-{\r
- Py_buffer pbin;\r
- unsigned char *ascii_data, *bin_data;\r
- int leftbits = 0;\r
- unsigned char this_ch;\r
- unsigned int leftchar = 0;\r
- PyObject *rv;\r
- Py_ssize_t len;\r
-\r
- if ( !PyArg_ParseTuple(args, "s*:b2a_hqx", &pbin) )\r
- return NULL;\r
- bin_data = pbin.buf;\r
- len = pbin.len;\r
-\r
- assert(len >= 0);\r
-\r
- if (len > PY_SSIZE_T_MAX / 2 - 2) {\r
- PyBuffer_Release(&pbin);\r
- return PyErr_NoMemory();\r
- }\r
-\r
- /* Allocate a buffer that is at least large enough */\r
- if ( (rv=PyString_FromStringAndSize(NULL, len*2+2)) == NULL ) {\r
- PyBuffer_Release(&pbin);\r
- return NULL;\r
- }\r
- ascii_data = (unsigned char *)PyString_AS_STRING(rv);\r
-\r
- for( ; len > 0 ; len--, bin_data++ ) {\r
- /* Shift into our buffer, and output any 6bits ready */\r
- leftchar = (leftchar << 8) | *bin_data;\r
- leftbits += 8;\r
- while ( leftbits >= 6 ) {\r
- this_ch = (leftchar >> (leftbits-6)) & 0x3f;\r
- leftbits -= 6;\r
- *ascii_data++ = table_b2a_hqx[this_ch];\r
- }\r
- }\r
- /* Output a possible runt byte */\r
- if ( leftbits ) {\r
- leftchar <<= (6-leftbits);\r
- *ascii_data++ = table_b2a_hqx[leftchar & 0x3f];\r
- }\r
- /* rv is cleared on error */\r
- (void)_PyString_Resize(&rv,\r
- (ascii_data -\r
- (unsigned char *)PyString_AS_STRING(rv)));\r
- PyBuffer_Release(&pbin);\r
- return rv;\r
-}\r
-\r
-PyDoc_STRVAR(doc_rledecode_hqx, "Decode hexbin RLE-coded string");\r
-\r
-static PyObject *\r
-binascii_rledecode_hqx(PyObject *self, PyObject *args)\r
-{\r
- Py_buffer pin;\r
- unsigned char *in_data, *out_data;\r
- unsigned char in_byte, in_repeat;\r
- PyObject *rv;\r
- Py_ssize_t in_len, out_len, out_len_left;\r
-\r
- if ( !PyArg_ParseTuple(args, "s*:rledecode_hqx", &pin) )\r
- return NULL;\r
- in_data = pin.buf;\r
- in_len = pin.len;\r
-\r
- assert(in_len >= 0);\r
-\r
- /* Empty string is a special case */\r
- if ( in_len == 0 ) {\r
- PyBuffer_Release(&pin);\r
- return PyString_FromStringAndSize("", 0);\r
- }\r
- else if (in_len > PY_SSIZE_T_MAX / 2) {\r
- PyBuffer_Release(&pin);\r
- return PyErr_NoMemory();\r
- }\r
-\r
- /* Allocate a buffer of reasonable size. Resized when needed */\r
- out_len = in_len*2;\r
- if ( (rv=PyString_FromStringAndSize(NULL, out_len)) == NULL ) {\r
- PyBuffer_Release(&pin);\r
- return NULL;\r
- }\r
- out_len_left = out_len;\r
- out_data = (unsigned char *)PyString_AS_STRING(rv);\r
-\r
- /*\r
- ** We need two macros here to get/put bytes and handle\r
- ** end-of-buffer for input and output strings.\r
- */\r
-#define INBYTE(b) \\r
- do { \\r
- if ( --in_len < 0 ) { \\r
- PyErr_SetString(Incomplete, ""); \\r
- Py_DECREF(rv); \\r
- PyBuffer_Release(&pin); \\r
- return NULL; \\r
- } \\r
- b = *in_data++; \\r
- } while(0)\r
-\r
-#define OUTBYTE(b) \\r
- do { \\r
- if ( --out_len_left < 0 ) { \\r
- if ( out_len > PY_SSIZE_T_MAX / 2) return PyErr_NoMemory(); \\r
- if (_PyString_Resize(&rv, 2*out_len) < 0) \\r
- { PyBuffer_Release(&pin); return NULL; } \\r
- out_data = (unsigned char *)PyString_AS_STRING(rv) \\r
- + out_len; \\r
- out_len_left = out_len-1; \\r
- out_len = out_len * 2; \\r
- } \\r
- *out_data++ = b; \\r
- } while(0)\r
-\r
- /*\r
- ** Handle first byte separately (since we have to get angry\r
- ** in case of an orphaned RLE code).\r
- */\r
- INBYTE(in_byte);\r
-\r
- if (in_byte == RUNCHAR) {\r
- INBYTE(in_repeat);\r
- if (in_repeat != 0) {\r
- /* Note Error, not Incomplete (which is at the end\r
- ** of the string only). This is a programmer error.\r
- */\r
- PyErr_SetString(Error, "Orphaned RLE code at start");\r
- PyBuffer_Release(&pin);\r
- Py_DECREF(rv);\r
- return NULL;\r
- }\r
- OUTBYTE(RUNCHAR);\r
- } else {\r
- OUTBYTE(in_byte);\r
- }\r
-\r
- while( in_len > 0 ) {\r
- INBYTE(in_byte);\r
-\r
- if (in_byte == RUNCHAR) {\r
- INBYTE(in_repeat);\r
- if ( in_repeat == 0 ) {\r
- /* Just an escaped RUNCHAR value */\r
- OUTBYTE(RUNCHAR);\r
- } else {\r
- /* Pick up value and output a sequence of it */\r
- in_byte = out_data[-1];\r
- while ( --in_repeat > 0 )\r
- OUTBYTE(in_byte);\r
- }\r
- } else {\r
- /* Normal byte */\r
- OUTBYTE(in_byte);\r
- }\r
- }\r
- /* rv is cleared on error */\r
- (void)_PyString_Resize(&rv,\r
- (out_data -\r
- (unsigned char *)PyString_AS_STRING(rv)));\r
- PyBuffer_Release(&pin);\r
- return rv;\r
-}\r
-\r
-PyDoc_STRVAR(doc_crc_hqx,\r
-"(data, oldcrc) -> newcrc. Compute hqx CRC incrementally");\r
-\r
-static PyObject *\r
-binascii_crc_hqx(PyObject *self, PyObject *args)\r
-{\r
- Py_buffer pin;\r
- unsigned char *bin_data;\r
- unsigned int crc;\r
- Py_ssize_t len;\r
-\r
- if ( !PyArg_ParseTuple(args, "s*i:crc_hqx", &pin, &crc) )\r
- return NULL;\r
- bin_data = pin.buf;\r
- len = pin.len;\r
-\r
- while(len-- > 0) {\r
- crc=((crc<<8)&0xff00)^crctab_hqx[((crc>>8)&0xff)^*bin_data++];\r
- }\r
-\r
- PyBuffer_Release(&pin);\r
- return Py_BuildValue("i", crc);\r
-}\r
-\r
-PyDoc_STRVAR(doc_crc32,\r
-"(data, oldcrc = 0) -> newcrc. Compute CRC-32 incrementally");\r
-\r
-#ifdef USE_ZLIB_CRC32\r
-/* This was taken from zlibmodule.c PyZlib_crc32 (but is PY_SSIZE_T_CLEAN) */\r
-static PyObject *\r
-binascii_crc32(PyObject *self, PyObject *args)\r
-{\r
- unsigned int crc32val = 0; /* crc32(0L, Z_NULL, 0) */\r
- Py_buffer pbuf;\r
- Byte *buf;\r
- Py_ssize_t len;\r
- int signed_val;\r
-\r
- if (!PyArg_ParseTuple(args, "s*|I:crc32", &pbuf, &crc32val))\r
- return NULL;\r
- /* In Python 2.x we return a signed integer regardless of native platform\r
- * long size (the 32bit unsigned long is treated as 32-bit signed and sign\r
- * extended into a 64-bit long inside the integer object). 3.0 does the\r
- * right thing and returns unsigned. http://bugs.python.org/issue1202 */\r
- buf = (Byte*)pbuf.buf;\r
- len = pbuf.len;\r
- signed_val = crc32(crc32val, buf, len);\r
- PyBuffer_Release(&pbuf);\r
- return PyInt_FromLong(signed_val);\r
-}\r
-#else /* USE_ZLIB_CRC32 */\r
-/* Crc - 32 BIT ANSI X3.66 CRC checksum files\r
- Also known as: ISO 3307\r
-**********************************************************************|\r
-* *|\r
-* Demonstration program to compute the 32-bit CRC used as the frame *|\r
-* check sequence in ADCCP (ANSI X3.66, also known as FIPS PUB 71 *|\r
-* and FED-STD-1003, the U.S. versions of CCITT's X.25 link-level *|\r
-* protocol). The 32-bit FCS was added via the Federal Register, *|\r
-* 1 June 1982, p.23798. I presume but don't know for certain that *|\r
-* this polynomial is or will be included in CCITT V.41, which *|\r
-* defines the 16-bit CRC (often called CRC-CCITT) polynomial. FIPS *|\r
-* PUB 78 says that the 32-bit FCS reduces otherwise undetected *|\r
-* errors by a factor of 10^-5 over 16-bit FCS. *|\r
-* *|\r
-**********************************************************************|\r
-\r
- Copyright (C) 1986 Gary S. Brown. You may use this program, or\r
- code or tables extracted from it, as desired without restriction.\r
-\r
- First, the polynomial itself and its table of feedback terms. The\r
- polynomial is\r
- 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\r
- Note that we take it "backwards" and put the highest-order term in\r
- the lowest-order bit. The X^32 term is "implied"; the LSB is the\r
- X^31 term, etc. The X^0 term (usually shown as "+1") results in\r
- the MSB being 1.\r
-\r
- Note that the usual hardware shift register implementation, which\r
- is what we're using (we're merely optimizing it by doing eight-bit\r
- chunks at a time) shifts bits into the lowest-order term. In our\r
- implementation, that means shifting towards the right. Why do we\r
- do it this way? Because the calculated CRC must be transmitted in\r
- order from highest-order term to lowest-order term. UARTs transmit\r
- characters in order from LSB to MSB. By storing the CRC this way,\r
- we hand it to the UART in the order low-byte to high-byte; the UART\r
- sends each low-bit to hight-bit; and the result is transmission bit\r
- by bit from highest- to lowest-order term without requiring any bit\r
- shuffling on our part. Reception works similarly.\r
-\r
- The feedback terms table consists of 256, 32-bit entries. Notes:\r
-\r
- 1. The table can be generated at runtime if desired; code to do so\r
- is shown later. It might not be obvious, but the feedback\r
- terms simply represent the results of eight shift/xor opera-\r
- tions for all combinations of data and CRC register values.\r
-\r
- 2. The CRC accumulation logic is the same for all CRC polynomials,\r
- be they sixteen or thirty-two bits wide. You simply choose the\r
- appropriate table. Alternatively, because the table can be\r
- generated at runtime, you can start by generating the table for\r
- the polynomial in question and use exactly the same "updcrc",\r
- if your application needn't simultaneously handle two CRC\r
- polynomials. (Note, however, that XMODEM is strange.)\r
-\r
- 3. For 16-bit CRCs, the table entries need be only 16 bits wide;\r
- of course, 32-bit entries work OK if the high 16 bits are zero.\r
-\r
- 4. The values must be right-shifted by eight bits by the "updcrc"\r
- logic; the shift must be unsigned (bring in zeroes). On some\r
- hardware you could probably optimize the shift in assembler by\r
- using byte-swap instructions.\r
-********************************************************************/\r
-\r
-static unsigned int crc_32_tab[256] = {\r
-0x00000000U, 0x77073096U, 0xee0e612cU, 0x990951baU, 0x076dc419U,\r
-0x706af48fU, 0xe963a535U, 0x9e6495a3U, 0x0edb8832U, 0x79dcb8a4U,\r
-0xe0d5e91eU, 0x97d2d988U, 0x09b64c2bU, 0x7eb17cbdU, 0xe7b82d07U,\r
-0x90bf1d91U, 0x1db71064U, 0x6ab020f2U, 0xf3b97148U, 0x84be41deU,\r
-0x1adad47dU, 0x6ddde4ebU, 0xf4d4b551U, 0x83d385c7U, 0x136c9856U,\r
-0x646ba8c0U, 0xfd62f97aU, 0x8a65c9ecU, 0x14015c4fU, 0x63066cd9U,\r
-0xfa0f3d63U, 0x8d080df5U, 0x3b6e20c8U, 0x4c69105eU, 0xd56041e4U,\r
-0xa2677172U, 0x3c03e4d1U, 0x4b04d447U, 0xd20d85fdU, 0xa50ab56bU,\r
-0x35b5a8faU, 0x42b2986cU, 0xdbbbc9d6U, 0xacbcf940U, 0x32d86ce3U,\r
-0x45df5c75U, 0xdcd60dcfU, 0xabd13d59U, 0x26d930acU, 0x51de003aU,\r
-0xc8d75180U, 0xbfd06116U, 0x21b4f4b5U, 0x56b3c423U, 0xcfba9599U,\r
-0xb8bda50fU, 0x2802b89eU, 0x5f058808U, 0xc60cd9b2U, 0xb10be924U,\r
-0x2f6f7c87U, 0x58684c11U, 0xc1611dabU, 0xb6662d3dU, 0x76dc4190U,\r
-0x01db7106U, 0x98d220bcU, 0xefd5102aU, 0x71b18589U, 0x06b6b51fU,\r
-0x9fbfe4a5U, 0xe8b8d433U, 0x7807c9a2U, 0x0f00f934U, 0x9609a88eU,\r
-0xe10e9818U, 0x7f6a0dbbU, 0x086d3d2dU, 0x91646c97U, 0xe6635c01U,\r
-0x6b6b51f4U, 0x1c6c6162U, 0x856530d8U, 0xf262004eU, 0x6c0695edU,\r
-0x1b01a57bU, 0x8208f4c1U, 0xf50fc457U, 0x65b0d9c6U, 0x12b7e950U,\r
-0x8bbeb8eaU, 0xfcb9887cU, 0x62dd1ddfU, 0x15da2d49U, 0x8cd37cf3U,\r
-0xfbd44c65U, 0x4db26158U, 0x3ab551ceU, 0xa3bc0074U, 0xd4bb30e2U,\r
-0x4adfa541U, 0x3dd895d7U, 0xa4d1c46dU, 0xd3d6f4fbU, 0x4369e96aU,\r
-0x346ed9fcU, 0xad678846U, 0xda60b8d0U, 0x44042d73U, 0x33031de5U,\r
-0xaa0a4c5fU, 0xdd0d7cc9U, 0x5005713cU, 0x270241aaU, 0xbe0b1010U,\r
-0xc90c2086U, 0x5768b525U, 0x206f85b3U, 0xb966d409U, 0xce61e49fU,\r
-0x5edef90eU, 0x29d9c998U, 0xb0d09822U, 0xc7d7a8b4U, 0x59b33d17U,\r
-0x2eb40d81U, 0xb7bd5c3bU, 0xc0ba6cadU, 0xedb88320U, 0x9abfb3b6U,\r
-0x03b6e20cU, 0x74b1d29aU, 0xead54739U, 0x9dd277afU, 0x04db2615U,\r
-0x73dc1683U, 0xe3630b12U, 0x94643b84U, 0x0d6d6a3eU, 0x7a6a5aa8U,\r
-0xe40ecf0bU, 0x9309ff9dU, 0x0a00ae27U, 0x7d079eb1U, 0xf00f9344U,\r
-0x8708a3d2U, 0x1e01f268U, 0x6906c2feU, 0xf762575dU, 0x806567cbU,\r
-0x196c3671U, 0x6e6b06e7U, 0xfed41b76U, 0x89d32be0U, 0x10da7a5aU,\r
-0x67dd4accU, 0xf9b9df6fU, 0x8ebeeff9U, 0x17b7be43U, 0x60b08ed5U,\r
-0xd6d6a3e8U, 0xa1d1937eU, 0x38d8c2c4U, 0x4fdff252U, 0xd1bb67f1U,\r
-0xa6bc5767U, 0x3fb506ddU, 0x48b2364bU, 0xd80d2bdaU, 0xaf0a1b4cU,\r
-0x36034af6U, 0x41047a60U, 0xdf60efc3U, 0xa867df55U, 0x316e8eefU,\r
-0x4669be79U, 0xcb61b38cU, 0xbc66831aU, 0x256fd2a0U, 0x5268e236U,\r
-0xcc0c7795U, 0xbb0b4703U, 0x220216b9U, 0x5505262fU, 0xc5ba3bbeU,\r
-0xb2bd0b28U, 0x2bb45a92U, 0x5cb36a04U, 0xc2d7ffa7U, 0xb5d0cf31U,\r
-0x2cd99e8bU, 0x5bdeae1dU, 0x9b64c2b0U, 0xec63f226U, 0x756aa39cU,\r
-0x026d930aU, 0x9c0906a9U, 0xeb0e363fU, 0x72076785U, 0x05005713U,\r
-0x95bf4a82U, 0xe2b87a14U, 0x7bb12baeU, 0x0cb61b38U, 0x92d28e9bU,\r
-0xe5d5be0dU, 0x7cdcefb7U, 0x0bdbdf21U, 0x86d3d2d4U, 0xf1d4e242U,\r
-0x68ddb3f8U, 0x1fda836eU, 0x81be16cdU, 0xf6b9265bU, 0x6fb077e1U,\r
-0x18b74777U, 0x88085ae6U, 0xff0f6a70U, 0x66063bcaU, 0x11010b5cU,\r
-0x8f659effU, 0xf862ae69U, 0x616bffd3U, 0x166ccf45U, 0xa00ae278U,\r
-0xd70dd2eeU, 0x4e048354U, 0x3903b3c2U, 0xa7672661U, 0xd06016f7U,\r
-0x4969474dU, 0x3e6e77dbU, 0xaed16a4aU, 0xd9d65adcU, 0x40df0b66U,\r
-0x37d83bf0U, 0xa9bcae53U, 0xdebb9ec5U, 0x47b2cf7fU, 0x30b5ffe9U,\r
-0xbdbdf21cU, 0xcabac28aU, 0x53b39330U, 0x24b4a3a6U, 0xbad03605U,\r
-0xcdd70693U, 0x54de5729U, 0x23d967bfU, 0xb3667a2eU, 0xc4614ab8U,\r
-0x5d681b02U, 0x2a6f2b94U, 0xb40bbe37U, 0xc30c8ea1U, 0x5a05df1bU,\r
-0x2d02ef8dU\r
-};\r
-\r
-static PyObject *\r
-binascii_crc32(PyObject *self, PyObject *args)\r
-{ /* By Jim Ahlstrom; All rights transferred to CNRI */\r
- Py_buffer pbin;\r
- unsigned char *bin_data;\r
- unsigned int crc = 0U; /* initial value of CRC */\r
- Py_ssize_t len;\r
- int result;\r
-\r
- if ( !PyArg_ParseTuple(args, "s*|I:crc32", &pbin, &crc) )\r
- return NULL;\r
- bin_data = pbin.buf;\r
- len = pbin.len;\r
-\r
- crc = ~ crc;\r
- while (len-- > 0)\r
- crc = crc_32_tab[(crc ^ *bin_data++) & 0xffU] ^ (crc >> 8);\r
- /* Note: (crc >> 8) MUST zero fill on left */\r
-\r
- result = (int)(crc ^ 0xFFFFFFFFU);\r
- PyBuffer_Release(&pbin);\r
- return PyInt_FromLong(result);\r
-}\r
-#endif /* USE_ZLIB_CRC32 */\r
-\r
-\r
-static PyObject *\r
-binascii_hexlify(PyObject *self, PyObject *args)\r
-{\r
- Py_buffer parg;\r
- char* argbuf;\r
- Py_ssize_t arglen;\r
- PyObject *retval;\r
- char* retbuf;\r
- Py_ssize_t i, j;\r
-\r
- if (!PyArg_ParseTuple(args, "s*:b2a_hex", &parg))\r
- return NULL;\r
- argbuf = parg.buf;\r
- arglen = parg.len;\r
-\r
- assert(arglen >= 0);\r
- if (arglen > PY_SSIZE_T_MAX / 2) {\r
- PyBuffer_Release(&parg);\r
- return PyErr_NoMemory();\r
- }\r
-\r
- retval = PyString_FromStringAndSize(NULL, arglen*2);\r
- if (!retval) {\r
- PyBuffer_Release(&parg);\r
- return NULL;\r
- }\r
- retbuf = PyString_AS_STRING(retval);\r
-\r
- /* make hex version of string, taken from shamodule.c */\r
- for (i=j=0; i < arglen; i++) {\r
- char c;\r
- c = (argbuf[i] >> 4) & 0xf;\r
- c = (c>9) ? c+'a'-10 : c + '0';\r
- retbuf[j++] = c;\r
- c = argbuf[i] & 0xf;\r
- c = (c>9) ? c+'a'-10 : c + '0';\r
- retbuf[j++] = c;\r
- }\r
- PyBuffer_Release(&parg);\r
- return retval;\r
-}\r
-\r
-PyDoc_STRVAR(doc_hexlify,\r
-"b2a_hex(data) -> s; Hexadecimal representation of binary data.\n\\r
-\n\\r
-This function is also available as \"hexlify()\".");\r
-\r
-\r
-static int\r
-to_int(int c)\r
-{\r
- if (isdigit(c))\r
- return c - '0';\r
- else {\r
- if (Py_ISUPPER(c))\r
- c = Py_TOLOWER(c);\r
- if (c >= 'a' && c <= 'f')\r
- return c - 'a' + 10;\r
- }\r
- return -1;\r
-}\r
-\r
-\r
-static PyObject *\r
-binascii_unhexlify(PyObject *self, PyObject *args)\r
-{\r
- Py_buffer parg;\r
- char* argbuf;\r
- Py_ssize_t arglen;\r
- PyObject *retval;\r
- char* retbuf;\r
- Py_ssize_t i, j;\r
-\r
- if (!PyArg_ParseTuple(args, "s*:a2b_hex", &parg))\r
- return NULL;\r
- argbuf = parg.buf;\r
- arglen = parg.len;\r
-\r
- assert(arglen >= 0);\r
-\r
- /* XXX What should we do about strings with an odd length? Should\r
- * we add an implicit leading zero, or a trailing zero? For now,\r
- * raise an exception.\r
- */\r
- if (arglen % 2) {\r
- PyBuffer_Release(&parg);\r
- PyErr_SetString(PyExc_TypeError, "Odd-length string");\r
- return NULL;\r
- }\r
-\r
- retval = PyString_FromStringAndSize(NULL, (arglen/2));\r
- if (!retval) {\r
- PyBuffer_Release(&parg);\r
- return NULL;\r
- }\r
- retbuf = PyString_AS_STRING(retval);\r
-\r
- for (i=j=0; i < arglen; i += 2) {\r
- int top = to_int(Py_CHARMASK(argbuf[i]));\r
- int bot = to_int(Py_CHARMASK(argbuf[i+1]));\r
- if (top == -1 || bot == -1) {\r
- PyErr_SetString(PyExc_TypeError,\r
- "Non-hexadecimal digit found");\r
- goto finally;\r
- }\r
- retbuf[j++] = (top << 4) + bot;\r
- }\r
- PyBuffer_Release(&parg);\r
- return retval;\r
-\r
- finally:\r
- PyBuffer_Release(&parg);\r
- Py_DECREF(retval);\r
- return NULL;\r
-}\r
-\r
-PyDoc_STRVAR(doc_unhexlify,\r
-"a2b_hex(hexstr) -> s; Binary data of hexadecimal representation.\n\\r
-\n\\r
-hexstr must contain an even number of hex digits (upper or lower case).\n\\r
-This function is also available as \"unhexlify()\"");\r
-\r
-static int table_hex[128] = {\r
- -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1,\r
- -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1,\r
- -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1,\r
- 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,-1,-1, -1,-1,-1,-1,\r
- -1,10,11,12, 13,14,15,-1, -1,-1,-1,-1, -1,-1,-1,-1,\r
- -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1,\r
- -1,10,11,12, 13,14,15,-1, -1,-1,-1,-1, -1,-1,-1,-1,\r
- -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1\r
-};\r
-\r
-#define hexval(c) table_hex[(unsigned int)(c)]\r
-\r
-#define MAXLINESIZE 76\r
-\r
-PyDoc_STRVAR(doc_a2b_qp, "Decode a string of qp-encoded data");\r
-\r
-static PyObject*\r
-binascii_a2b_qp(PyObject *self, PyObject *args, PyObject *kwargs)\r
-{\r
- Py_ssize_t in, out;\r
- char ch;\r
- Py_buffer pdata;\r
- unsigned char *data, *odata;\r
- Py_ssize_t datalen = 0;\r
- PyObject *rv;\r
- static char *kwlist[] = {"data", "header", NULL};\r
- int header = 0;\r
-\r
- if (!PyArg_ParseTupleAndKeywords(args, kwargs, "s*|i", kwlist, &pdata,\r
- &header))\r
- return NULL;\r
- data = pdata.buf;\r
- datalen = pdata.len;\r
-\r
- /* We allocate the output same size as input, this is overkill.\r
- * The previous implementation used calloc() so we'll zero out the\r
- * memory here too, since PyMem_Malloc() does not guarantee that.\r
- */\r
- odata = (unsigned char *) PyMem_Malloc(datalen);\r
- if (odata == NULL) {\r
- PyBuffer_Release(&pdata);\r
- PyErr_NoMemory();\r
- return NULL;\r
- }\r
- memset(odata, 0, datalen);\r
-\r
- in = out = 0;\r
- while (in < datalen) {\r
- if (data[in] == '=') {\r
- in++;\r
- if (in >= datalen) break;\r
- /* Soft line breaks */\r
- if ((data[in] == '\n') || (data[in] == '\r')) {\r
- if (data[in] != '\n') {\r
- while (in < datalen && data[in] != '\n') in++;\r
- }\r
- if (in < datalen) in++;\r
- }\r
- else if (data[in] == '=') {\r
- /* broken case from broken python qp */\r
- odata[out++] = '=';\r
- in++;\r
- }\r
- else if (((data[in] >= 'A' && data[in] <= 'F') ||\r
- (data[in] >= 'a' && data[in] <= 'f') ||\r
- (data[in] >= '0' && data[in] <= '9')) &&\r
- ((data[in+1] >= 'A' && data[in+1] <= 'F') ||\r
- (data[in+1] >= 'a' && data[in+1] <= 'f') ||\r
- (data[in+1] >= '0' && data[in+1] <= '9'))) {\r
- /* hexval */\r
- ch = hexval(data[in]) << 4;\r
- in++;\r
- ch |= hexval(data[in]);\r
- in++;\r
- odata[out++] = ch;\r
- }\r
- else {\r
- odata[out++] = '=';\r
- }\r
- }\r
- else if (header && data[in] == '_') {\r
- odata[out++] = ' ';\r
- in++;\r
- }\r
- else {\r
- odata[out] = data[in];\r
- in++;\r
- out++;\r
- }\r
- }\r
- if ((rv = PyString_FromStringAndSize((char *)odata, out)) == NULL) {\r
- PyBuffer_Release(&pdata);\r
- PyMem_Free(odata);\r
- return NULL;\r
- }\r
- PyBuffer_Release(&pdata);\r
- PyMem_Free(odata);\r
- return rv;\r
-}\r
-\r
-static int\r
-to_hex (unsigned char ch, unsigned char *s)\r
-{\r
- unsigned int uvalue = ch;\r
-\r
- s[1] = "0123456789ABCDEF"[uvalue % 16];\r
- uvalue = (uvalue / 16);\r
- s[0] = "0123456789ABCDEF"[uvalue % 16];\r
- return 0;\r
-}\r
-\r
-PyDoc_STRVAR(doc_b2a_qp,\r
-"b2a_qp(data, quotetabs=0, istext=1, header=0) -> s; \n\\r
- Encode a string using quoted-printable encoding. \n\\r
-\n\\r
-On encoding, when istext is set, newlines are not encoded, and white \n\\r
-space at end of lines is. When istext is not set, \\r and \\n (CR/LF) are \n\\r
-both encoded. When quotetabs is set, space and tabs are encoded.");\r
-\r
-/* XXX: This is ridiculously complicated to be backward compatible\r
- * (mostly) with the quopri module. It doesn't re-create the quopri\r
- * module bug where text ending in CRLF has the CR encoded */\r
-static PyObject*\r
-binascii_b2a_qp (PyObject *self, PyObject *args, PyObject *kwargs)\r
-{\r
- Py_ssize_t in, out;\r
- Py_buffer pdata;\r
- unsigned char *data, *odata;\r
- Py_ssize_t datalen = 0, odatalen = 0;\r
- PyObject *rv;\r
- unsigned int linelen = 0;\r
- static char *kwlist[] = {"data", "quotetabs", "istext",\r
- "header", NULL};\r
- int istext = 1;\r
- int quotetabs = 0;\r
- int header = 0;\r
- unsigned char ch;\r
- int crlf = 0;\r
- unsigned char *p;\r
-\r
- if (!PyArg_ParseTupleAndKeywords(args, kwargs, "s*|iii", kwlist, &pdata,\r
- "etabs, &istext, &header))\r
- return NULL;\r
- data = pdata.buf;\r
- datalen = pdata.len;\r
-\r
- /* See if this string is using CRLF line ends */\r
- /* XXX: this function has the side effect of converting all of\r
- * the end of lines to be the same depending on this detection\r
- * here */\r
- p = (unsigned char *) memchr(data, '\n', datalen);\r
- if ((p != NULL) && (p > data) && (*(p-1) == '\r'))\r
- crlf = 1;\r
-\r
- /* First, scan to see how many characters need to be encoded */\r
- in = 0;\r
- while (in < datalen) {\r
- if ((data[in] > 126) ||\r
- (data[in] == '=') ||\r
- (header && data[in] == '_') ||\r
- ((data[in] == '.') && (linelen == 0) &&\r
- (data[in+1] == '\n' || data[in+1] == '\r' || data[in+1] == 0)) ||\r
- (!istext && ((data[in] == '\r') || (data[in] == '\n'))) ||\r
- ((data[in] == '\t' || data[in] == ' ') && (in + 1 == datalen)) ||\r
- ((data[in] < 33) &&\r
- (data[in] != '\r') && (data[in] != '\n') &&\r
- (quotetabs ||\r
- (!quotetabs && ((data[in] != '\t') && (data[in] != ' '))))))\r
- {\r
- if ((linelen + 3) >= MAXLINESIZE) {\r
- linelen = 0;\r
- if (crlf)\r
- odatalen += 3;\r
- else\r
- odatalen += 2;\r
- }\r
- linelen += 3;\r
- odatalen += 3;\r
- in++;\r
- }\r
- else {\r
- if (istext &&\r
- ((data[in] == '\n') ||\r
- ((in+1 < datalen) && (data[in] == '\r') &&\r
- (data[in+1] == '\n'))))\r
- {\r
- linelen = 0;\r
- /* Protect against whitespace on end of line */\r
- if (in && ((data[in-1] == ' ') || (data[in-1] == '\t')))\r
- odatalen += 2;\r
- if (crlf)\r
- odatalen += 2;\r
- else\r
- odatalen += 1;\r
- if (data[in] == '\r')\r
- in += 2;\r
- else\r
- in++;\r
- }\r
- else {\r
- if ((in + 1 != datalen) &&\r
- (data[in+1] != '\n') &&\r
- (linelen + 1) >= MAXLINESIZE) {\r
- linelen = 0;\r
- if (crlf)\r
- odatalen += 3;\r
- else\r
- odatalen += 2;\r
- }\r
- linelen++;\r
- odatalen++;\r
- in++;\r
- }\r
- }\r
- }\r
-\r
- /* We allocate the output same size as input, this is overkill.\r
- * The previous implementation used calloc() so we'll zero out the\r
- * memory here too, since PyMem_Malloc() does not guarantee that.\r
- */\r
- odata = (unsigned char *) PyMem_Malloc(odatalen);\r
- if (odata == NULL) {\r
- PyBuffer_Release(&pdata);\r
- PyErr_NoMemory();\r
- return NULL;\r
- }\r
- memset(odata, 0, odatalen);\r
-\r
- in = out = linelen = 0;\r
- while (in < datalen) {\r
- if ((data[in] > 126) ||\r
- (data[in] == '=') ||\r
- (header && data[in] == '_') ||\r
- ((data[in] == '.') && (linelen == 0) &&\r
- (data[in+1] == '\n' || data[in+1] == '\r' || data[in+1] == 0)) ||\r
- (!istext && ((data[in] == '\r') || (data[in] == '\n'))) ||\r
- ((data[in] == '\t' || data[in] == ' ') && (in + 1 == datalen)) ||\r
- ((data[in] < 33) &&\r
- (data[in] != '\r') && (data[in] != '\n') &&\r
- (quotetabs ||\r
- (!quotetabs && ((data[in] != '\t') && (data[in] != ' '))))))\r
- {\r
- if ((linelen + 3 )>= MAXLINESIZE) {\r
- odata[out++] = '=';\r
- if (crlf) odata[out++] = '\r';\r
- odata[out++] = '\n';\r
- linelen = 0;\r
- }\r
- odata[out++] = '=';\r
- to_hex(data[in], &odata[out]);\r
- out += 2;\r
- in++;\r
- linelen += 3;\r
- }\r
- else {\r
- if (istext &&\r
- ((data[in] == '\n') ||\r
- ((in+1 < datalen) && (data[in] == '\r') &&\r
- (data[in+1] == '\n'))))\r
- {\r
- linelen = 0;\r
- /* Protect against whitespace on end of line */\r
- if (out && ((odata[out-1] == ' ') || (odata[out-1] == '\t'))) {\r
- ch = odata[out-1];\r
- odata[out-1] = '=';\r
- to_hex(ch, &odata[out]);\r
- out += 2;\r
- }\r
-\r
- if (crlf) odata[out++] = '\r';\r
- odata[out++] = '\n';\r
- if (data[in] == '\r')\r
- in += 2;\r
- else\r
- in++;\r
- }\r
- else {\r
- if ((in + 1 != datalen) &&\r
- (data[in+1] != '\n') &&\r
- (linelen + 1) >= MAXLINESIZE) {\r
- odata[out++] = '=';\r
- if (crlf) odata[out++] = '\r';\r
- odata[out++] = '\n';\r
- linelen = 0;\r
- }\r
- linelen++;\r
- if (header && data[in] == ' ') {\r
- odata[out++] = '_';\r
- in++;\r
- }\r
- else {\r
- odata[out++] = data[in++];\r
- }\r
- }\r
- }\r
- }\r
- if ((rv = PyString_FromStringAndSize((char *)odata, out)) == NULL) {\r
- PyBuffer_Release(&pdata);\r
- PyMem_Free(odata);\r
- return NULL;\r
- }\r
- PyBuffer_Release(&pdata);\r
- PyMem_Free(odata);\r
- return rv;\r
-}\r
-\r
-/* List of functions defined in the module */\r
-\r
-static struct PyMethodDef binascii_module_methods[] = {\r
- {"a2b_uu", binascii_a2b_uu, METH_VARARGS, doc_a2b_uu},\r
- {"b2a_uu", binascii_b2a_uu, METH_VARARGS, doc_b2a_uu},\r
- {"a2b_base64", binascii_a2b_base64, METH_VARARGS, doc_a2b_base64},\r
- {"b2a_base64", binascii_b2a_base64, METH_VARARGS, doc_b2a_base64},\r
- {"a2b_hqx", binascii_a2b_hqx, METH_VARARGS, doc_a2b_hqx},\r
- {"b2a_hqx", binascii_b2a_hqx, METH_VARARGS, doc_b2a_hqx},\r
- {"b2a_hex", binascii_hexlify, METH_VARARGS, doc_hexlify},\r
- {"a2b_hex", binascii_unhexlify, METH_VARARGS, doc_unhexlify},\r
- {"hexlify", binascii_hexlify, METH_VARARGS, doc_hexlify},\r
- {"unhexlify", binascii_unhexlify, METH_VARARGS, doc_unhexlify},\r
- {"rlecode_hqx", binascii_rlecode_hqx, METH_VARARGS, doc_rlecode_hqx},\r
- {"rledecode_hqx", binascii_rledecode_hqx, METH_VARARGS,\r
- doc_rledecode_hqx},\r
- {"crc_hqx", binascii_crc_hqx, METH_VARARGS, doc_crc_hqx},\r
- {"crc32", binascii_crc32, METH_VARARGS, doc_crc32},\r
- {"a2b_qp", (PyCFunction)binascii_a2b_qp, METH_VARARGS | METH_KEYWORDS,\r
- doc_a2b_qp},\r
- {"b2a_qp", (PyCFunction)binascii_b2a_qp, METH_VARARGS | METH_KEYWORDS,\r
- doc_b2a_qp},\r
- {NULL, NULL} /* sentinel */\r
-};\r
-\r
-\r
-/* Initialization function for the module (*must* be called initbinascii) */\r
-PyDoc_STRVAR(doc_binascii, "Conversion between binary data and ASCII");\r
-\r
-PyMODINIT_FUNC\r
-initbinascii(void)\r
-{\r
- PyObject *m, *d, *x;\r
-\r
- /* Create the module and add the functions */\r
- m = Py_InitModule("binascii", binascii_module_methods);\r
- if (m == NULL)\r
- return;\r
-\r
- d = PyModule_GetDict(m);\r
- x = PyString_FromString(doc_binascii);\r
- PyDict_SetItemString(d, "__doc__", x);\r
- Py_XDECREF(x);\r
-\r
- Error = PyErr_NewException("binascii.Error", NULL, NULL);\r
- PyDict_SetItemString(d, "Error", Error);\r
- Incomplete = PyErr_NewException("binascii.Incomplete", NULL, NULL);\r
- PyDict_SetItemString(d, "Incomplete", Incomplete);\r
-}\r
projects / mirror_edk2.git / blobdiff