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-rw-r--r--src/libstrongswan/asn1/ttodata.c433
1 files changed, 0 insertions, 433 deletions
diff --git a/src/libstrongswan/asn1/ttodata.c b/src/libstrongswan/asn1/ttodata.c
deleted file mode 100644
index 125313c2a..000000000
--- a/src/libstrongswan/asn1/ttodata.c
+++ /dev/null
@@ -1,433 +0,0 @@
-/*
- * convert from text form of arbitrary data (e.g., keys) to binary
- * Copyright (C) 2000 Henry Spencer.
- *
- * This library is free software; you can redistribute it and/or modify it
- * under the terms of the GNU Library General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or (at your
- * option) any later version. See <http://www.fsf.org/copyleft/lgpl.txt>.
- *
- * This library is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public
- * License for more details.
- */
-
-#include "ttodata.h"
-
-#include <string.h>
-#include <ctype.h>
-
-/* converters and misc */
-static int unhex(const char *, char *, size_t);
-static int unb64(const char *, char *, size_t);
-static int untext(const char *, char *, size_t);
-static const char *badch(const char *, int, char *, size_t);
-
-/* internal error codes for converters */
-#define SHORT (-2) /* internal buffer too short */
-#define BADPAD (-3) /* bad base64 padding */
-#define BADCH0 (-4) /* invalid character 0 */
-#define BADCH1 (-5) /* invalid character 1 */
-#define BADCH2 (-6) /* invalid character 2 */
-#define BADCH3 (-7) /* invalid character 3 */
-#define BADOFF(code) (BADCH0-(code))
-
-/**
- * @brief convert text to data, with verbose error reports
- *
- * If some of this looks slightly odd, it's because it has changed
- * repeatedly (from the original atodata()) without a major rewrite.
- *
- * @param src
- * @param srclen 0 means apply strlen()
- * @param base 0 means figure it out
- * @param dst need not be valid if dstlen is 0
- * @param dstlen
- * @param lenp where to record length (NULL is nowhere)
- * @param errp error buffer
- * @param flags
- * @return NULL on success, else literal or errp
- */
-const char *ttodatav(const char *src, size_t srclen, int base, char *dst, size_t dstlen, size_t *lenp, char *errp, size_t errlen, unsigned int flags)
-{
- size_t ingroup; /* number of input bytes converted at once */
- char buf[4]; /* output from conversion */
- int nbytes; /* size of output */
- int (*decode)(const char *, char *, size_t);
- char *stop;
- int ndone;
- int i;
- int underscoreok;
- int skipSpace = 0;
-
- if (srclen == 0)
- {
- srclen = strlen(src);
- }
- if (dstlen == 0)
- {
- dst = buf; /* point it somewhere valid */
- }
- stop = dst + dstlen;
-
- if (base == 0)
- {
- if (srclen < 2)
- {
- return "input too short to be valid";
- }
- if (*src++ != '0')
- {
- return "input does not begin with format prefix";
- }
- switch (*src++)
- {
- case 'x':
- case 'X':
- base = 16;
- break;
- case 's':
- case 'S':
- base = 64;
- break;
- case 't':
- case 'T':
- base = 256;
- break;
- default:
- return "unknown format prefix";
- }
- srclen -= 2;
- }
- switch (base)
- {
- case 16:
- decode = unhex;
- underscoreok = 1;
- ingroup = 2;
- break;
- case 64:
- decode = unb64;
- underscoreok = 0;
- ingroup = 4;
- if(flags & TTODATAV_IGNORESPACE)
- {
- skipSpace = 1;
- }
- break;
- case 256:
- decode = untext;
- ingroup = 1;
- underscoreok = 0;
- break;
- default:
- return "unknown base";
- }
-
- /* proceed */
- ndone = 0;
- while (srclen > 0)
- {
- char stage[4]; /* staging area for group */
- size_t sl = 0;
-
- /* Grab ingroup characters into stage,
- * squeezing out blanks if we are supposed to ignore them.
- */
- for (sl = 0; sl < ingroup; src++, srclen--)
- {
- if (srclen == 0)
- {
- return "input ends in mid-byte, perhaps truncated";
- }
- else if (!(skipSpace && (*src == ' ' || *src == '\t')))
- {
- stage[sl++] = *src;
- }
- }
-
- nbytes = (*decode)(stage, buf, sizeof(buf));
- switch (nbytes)
- {
- case BADCH0:
- case BADCH1:
- case BADCH2:
- case BADCH3:
- return badch(stage, nbytes, errp, errlen);
- case SHORT:
- return "internal buffer too short (\"can't happen\")";
- case BADPAD:
- return "bad (non-zero) padding at end of base64 input";
- }
- if (nbytes <= 0)
- {
- return "unknown internal error";
- }
- for (i = 0; i < nbytes; i++)
- {
- if (dst < stop)
- {
- *dst++ = buf[i];
- }
- ndone++;
- }
- while (srclen >= 1 && skipSpace && (*src == ' ' || *src == '\t'))
- {
- src++;
- srclen--;
- }
- if (underscoreok && srclen > 1 && (*src == '_' || *src == ':'))
- {
- /* srclen > 1 means not last character */
- src++;
- srclen--;
- }
- }
-
- if (ndone == 0)
- {
- return "no data bytes specified by input";
- }
- if (lenp != NULL)
- {
- *lenp = ndone;
- }
- return NULL;
-}
-
-/**
- * @brief ttodata - convert text to data
- *
- * @param src
- * @param srclen 0 means apply strlen()
- * @param base 0 means figure it out
- * @param dst need not be valid if dstlen is 0
- * @param dstlen
- * @param lenp where to record length (NULL is nowhere)
- * @return NULL on success, else literal
- */
-const char *ttodata(const char *src, size_t srclen, int base, char *dst, size_t dstlen, size_t *lenp)
-{
- return ttodatav(src, srclen, base, dst, dstlen, lenp, (char *)NULL,
- (size_t)0, TTODATAV_SPACECOUNTS);
-}
-
-/**
- * @brief atodata - convert ASCII to data
- *
- * backward-compatibility interface
- *
- * @param src
- * @param srclen
- * @param dst
- * @param dstlen
- * @return 0 for failure, true length for success
- */
-size_t atodata(const char *src, size_t srclen, char *dst, size_t dstlen)
-{
- size_t len;
- const char *err;
-
- err = ttodata(src, srclen, 0, dst, dstlen, &len);
- return (err)? 0:len;
-}
-
-/**
- * @brief atobytes - convert ASCII to data bytes
- *
- * another backward-compatibility interface
- */
-const char *atobytes(const char *src, size_t srclen, char *dst, size_t dstlen, size_t *lenp)
-{
- return ttodata(src, srclen, 0, dst, dstlen, lenp);
-}
-
-/**
- * @brief unhex - convert two ASCII hex digits to byte
- *
- * @param src known to be full length
- * @param dstnumber of result bytes, or error code
- * @param dstlen not large enough is a failure
- * @return
- */
-static int unhex(const char *src, char *dst, size_t dstlen)
-{
- char *p;
- unsigned byte;
- static char hex[] = "0123456789abcdef";
-
- if (dstlen < 1)
- {
- return SHORT;
- }
-
- p = strchr(hex, *src);
- if (p == NULL)
- {
- p = strchr(hex, tolower(*src));
- }
- if (p == NULL)
- {
- return BADCH0;
- }
- byte = (p - hex) << 4;
- src++;
-
- p = strchr(hex, *src);
- if (p == NULL)
- {
- p = strchr(hex, tolower(*src));
- }
- if (p == NULL)
- {
- return BADCH1;
- }
- byte |= (p - hex);
-
- *dst = byte;
- return 1;
-}
-
-/**
- * @brief unb64 - convert four ASCII base64 digits to three bytes
- *
- * Note that a base64 digit group is padded out with '=' if it represents
- * less than three bytes: one byte is dd==, two is ddd=, three is dddd.
- *
- * @param src known to be full length
- * @param dst
- * @param dstlen
- * @return number of result bytes, or error code
- */
-static int unb64(const char *src, char *dst, size_t dstlen)
-{
- char *p;
- unsigned byte1;
- unsigned byte2;
- static char base64[] =
- "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
-
- if (dstlen < 3)
- {
- return SHORT;
- }
- p = strchr(base64, *src++);
-
- if (p == NULL)
- {
- return BADCH0;
- }
- byte1 = (p - base64) << 2; /* first six bits */
-
- p = strchr(base64, *src++);
- if (p == NULL)
- {
- return BADCH1;
- }
-
- byte2 = p - base64; /* next six: two plus four */
- *dst++ = byte1 | (byte2 >> 4);
- byte1 = (byte2 & 0xf) << 4;
-
- p = strchr(base64, *src++);
- if (p == NULL)
- {
- if (*(src-1) == '=' && *src == '=')
- {
- if (byte1 != 0) /* bad padding */
- {
- return BADPAD;
- }
- return 1;
- }
- return BADCH2;
- }
-
- byte2 = p - base64; /* next six: four plus two */
- *dst++ = byte1 | (byte2 >> 2);
- byte1 = (byte2 & 0x3) << 6;
-
- p = strchr(base64, *src++);
- if (p == NULL)
- {
- if (*(src-1) == '=')
- {
- if (byte1 != 0) /* bad padding */
- {
- return BADPAD;
- }
- return 2;
- }
- return BADCH3;
- }
- byte2 = p - base64; /* last six */
- *dst++ = byte1 | byte2;
-
- return 3;
-}
-
-/**
- * @brief untext - convert one ASCII character to byte
- *
- * @param src known to be full length
- * @param dst
- * @param dstlen not large enough is a failure
- * @return number of result bytes, or error code
- */
-static int untext(const char *src, char *dst, size_t dstlen)
-{
- if (dstlen < 1)
- {
- return SHORT;
- }
- *dst = *src;
- return 1;
-}
-
-/**
- * @brief badch - produce a nice complaint about an unknown character
- *
- * If the compiler complains that the array bigenough[] has a negative
- * size, that means the TTODATAV_BUF constant has been set too small.
- *
- * @param src
- * @param errcode
- * @param errp might be NULL
- * @param errlen
- * @return literal or errp
- */
-static const char *badch(const char *src, int errcode, char *errp, size_t errlen)
-{
- static const char pre[] = "unknown character (`";
- static const char suf[] = "') in input";
- char buf[5];
-# define REQD (sizeof(pre) - 1 + sizeof(buf) - 1 + sizeof(suf))
- struct sizecheck {
- char bigenough[TTODATAV_BUF - REQD]; /* see above */
- };
- char ch;
-
- if (errp == NULL || errlen < REQD)
- {
- return "unknown character in input";
- }
- strcpy(errp, pre);
- ch = *(src + BADOFF(errcode));
- if (isprint(ch))
- {
- buf[0] = ch;
- buf[1] = '\0';
- }
- else
- {
- buf[0] = '\\';
- buf[1] = ((ch & 0700) >> 6) + '0';
- buf[2] = ((ch & 0070) >> 3) + '0';
- buf[3] = ((ch & 0007) >> 0) + '0';
- buf[4] = '\0';
- }
- strcat(errp, buf);
- strcat(errp, suf);
- return (const char *)errp;
-}
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