BIGNUM * OpenSSLCryptoBase64::b642BN(char * b64in, unsigned int len) {
if (len > 1024)
return NULL;
int bufLen;
unsigned char buf[1024];
EVP_ENCODE_CTX m_dctx;
EVP_DecodeInit(&m_dctx);
int rc = EVP_DecodeUpdate(&m_dctx,
buf,
&bufLen,
(unsigned char *) b64in,
len);
if (rc < 0) {
throw XSECCryptoException(XSECCryptoException::Base64Error,
"OpenSSL:Base64 - Error during Base64 Decode of BIGNUMS");
}
int finalLen;
EVP_DecodeFinal(&m_dctx, &buf[bufLen], &finalLen);
bufLen += finalLen;
// Now translate to a bignum
return BN_dup(BN_bin2bn(buf, bufLen, NULL));
}
int _ldapfull_base64_decode( const char *src, char **ret, int *rlen ) {
unsigned int rc, i, tlen = 0;
char *text;
EVP_ENCODE_CTX EVP_ctx;
text = (char *)malloc(((strlen(src)+3)/4 * 3) + 1);
if (text == NULL) {
return 0;
}
EVP_DecodeInit(&EVP_ctx);
rc = EVP_DecodeUpdate(&EVP_ctx, text, &i, (char *)src, strlen(src));
if (rc < 0) {
free(text);
return 0;
}
tlen+=i;
EVP_DecodeFinal(&EVP_ctx, text, &i);
*ret = text;
if (rlen != NULL) {
*rlen = tlen;
}
return 1;
}
int main(void)
{
int i, len, total = 0, total2 = 0, ret;
EVP_ENCODE_CTX ctx1, ctx2;
unsigned char f[60];
unsigned char t[80 + 1];
for(i = 0; i < 60; i++)
{
memset(&f[i], i, 1);
}
EVP_EncodeInit(&ctx1);
EVP_EncodeUpdate(&ctx1, t, &len, f, 60);
total += len;
printf("total = %d\n", total);
// printf("%s\n", t);
EVP_EncodeFinal(&ctx1, t + total, &len);
total += len;
printf("%total = %d\n", total);
printf("%s\n", t);
EVP_DecodeInit(&ctx2);
ret = EVP_DecodeUpdate(&ctx2, f, &len, t, total);
total2 += len;
ret = EVP_DecodeFinal(&ctx2, f, &len);
total2 += len;
for(i = 0; i < total2; i++)
{
printf("%02x\t", f[i]);
}
printf("\n");
return 0;
}
int32_t cm_base_64_decode(unsigned char *pIn, int32_t iInlen,unsigned char *pOut, int32_t *pOutlen)
{
EVP_ENCODE_CTX ctx;
EVP_DecodeInit(&ctx);
if(EVP_DecodeUpdate(&ctx,pOut,pOutlen,pIn,iInlen)<0)
return OF_FAILURE;
if(EVP_DecodeFinal(&ctx,pOut,pOutlen)<0)
return OF_FAILURE;
return OF_SUCCESS;
}
/***********************
Decode
************************/
int mite_base64_2_string(char *base64,int inlen,char **ppout)
{
EVP_ENCODE_CTX dctx;
EVP_DecodeInit(&dctx);
int outlen = 0;
int total = 0;
int ret = 0;
char *out = malloc(inlen);
ret = EVP_DecodeUpdate(&dctx,out,&outlen,base64,inlen);
if(ret < 0)
{
printf("EVP_DecodeUpdate err!\n");
return -1;
}
total+=outlen;
ret = EVP_DecodeFinal(&dctx,out,&outlen);
total += outlen;
*ppout=out;
return total;
}
void openssl_evp_encode()
{
FILE *fin, *fout;
int inLen, outLen;
EVP_ENCODE_CTX ctx;
unsigned char ins[MAX1_LEN], outs[MAX2_LEN];
fin = fopen("/tmp/test.dat", "rb");
fout = fopen("/tmp/test.txt", "w");
memset(ins, 0, sizeof(ins));
memset(outs, 0, sizeof(outs));
printf("\nEVP_Encode(/tmp/test.dat) = ");
EVP_EncodeInit(&ctx);
while ((inLen = fread(ins, 1, MAX1_LEN, fin)) > 0) {
EVP_EncodeUpdate(&ctx, outs, &outLen, ins, inLen);
fwrite(outs, 1, outLen, fout);
printf("%s", outs);
}
EVP_EncodeFinal(&ctx, outs, &outLen);
fwrite(outs, 1, outLen, fout);
printf("%s", outs);
fclose(fin);
fclose(fout);
fin = fopen("/tmp/test.txt", "r");
fout = fopen("/tmp/test-1.dat", "wb");
memset(ins, 0, sizeof(ins));
memset(outs, 0, sizeof(outs));
printf("\nEVP_Decode(/tmp/test.txt) = ");
EVP_DecodeInit(&ctx);
while ((inLen = fread(ins, 1, MAX1_LEN, fin)) > 0) {
EVP_DecodeUpdate(&ctx, outs, &outLen, ins, inLen);
fwrite(outs, 1, outLen, fout);
printf("%s", outs);
}
EVP_DecodeFinal(&ctx, outs, &outLen);
fwrite(outs, 1, outLen, fout);
printf("%s\n", outs);
fclose(fin);
fclose(fout);
}
/* {{{ php_crypto_base64_decode_update */
static inline int php_crypto_base64_decode_update(
EVP_ENCODE_CTX *ctx, char *out, int *outl,
const char *in, phpc_str_size_t in_len TSRMLS_DC)
{
int inl, rc;
/* check string length overflow */
if (php_crypto_str_size_to_int(in_len, &inl) == FAILURE) {
php_crypto_error(PHP_CRYPTO_ERROR_ARGS(Base64, INPUT_DATA_LENGTH_HIGH));
return FAILURE;
}
rc = EVP_DecodeUpdate(ctx,
(unsigned char *) out, outl,
(const unsigned char *) in, inl);
if (rc < 0) {
php_crypto_error(PHP_CRYPTO_ERROR_ARGS(Base64, DECODE_UPDATE_FAILED));
return FAILURE;
}
return SUCCESS;
}
unsigned int OpenSSLCryptoBase64::decode(unsigned char * inData,
unsigned int inLength,
unsigned char * outData,
unsigned int outLength) {
int rc;
int outLen;
if (outLength < inLength) {
throw XSECCryptoException(XSECCryptoException::MemoryError,
"OpenSSL:Base64 - Output buffer not big enough for Base64 decode");
}
rc = EVP_DecodeUpdate(&m_dctx,
outData,
&outLen,
inData,
inLength);
if (rc < 0) {
throw XSECCryptoException(XSECCryptoException::Base64Error,
"OpenSSL:Base64 - Error during Base64 Decode");
}
if (outLen > (int) outLength) {
throw XSECCryptoException(XSECCryptoException::MemoryError,
"OpenSSL:Base64 - Output buffer not big enough for Base64 decode and overflowed");
}
return outLen;
}
static void mime_get(byte_string_t bs, FILE *infp)
{
char line[crypt_buf_size];
int l, l2;
EVP_ENCODE_CTX mime;
byte_string_init(bs, 1024);
EVP_DecodeInit(&mime);
l = 0;
for (;;) {
fgets(line, crypt_buf_size, infp);
if (feof(infp)) break;
//break on blank line = "\n" or "\r\n"
if (strlen(line) <= 2) break;
EVP_DecodeUpdate(&mime, &bs->data[l], &l2, (unsigned char *) line, strlen(line));
l += l2;
if (bs->len - l < crypt_buf_size) {
byte_string_reinit(bs, bs->len * 2);
}
}
EVP_DecodeFinal(&mime, &bs->data[l], &l2);
byte_string_reinit(bs, l + l2);
}
/**
* Read in PEM-formatted data from the given BIO.
*
* By nature of the PEM format, all content must be printable ASCII (except
* for line endings). Other characters are malformed input and will be rejected.
*/
int PEM_read_bio_ex(BIO *bp, char **name_out, char **header,
unsigned char **data, long *len_out, unsigned int flags)
{
EVP_ENCODE_CTX *ctx = EVP_ENCODE_CTX_new();
const BIO_METHOD *bmeth;
BIO *headerB = NULL, *dataB = NULL;
char *name = NULL;
int len, taillen, headerlen, ret = 0;
BUF_MEM * buf_mem;
if (ctx == NULL) {
PEMerr(PEM_F_PEM_READ_BIO_EX, ERR_R_MALLOC_FAILURE);
return 0;
}
*len_out = 0;
*name_out = *header = NULL;
*data = NULL;
if ((flags & PEM_FLAG_EAY_COMPATIBLE) && (flags & PEM_FLAG_ONLY_B64)) {
/* These two are mutually incompatible; bail out. */
PEMerr(PEM_F_PEM_READ_BIO_EX, ERR_R_PASSED_INVALID_ARGUMENT);
goto end;
}
bmeth = (flags & PEM_FLAG_SECURE) ? BIO_s_secmem() : BIO_s_mem();
headerB = BIO_new(bmeth);
dataB = BIO_new(bmeth);
if (headerB == NULL || dataB == NULL) {
PEMerr(PEM_F_PEM_READ_BIO_EX, ERR_R_MALLOC_FAILURE);
goto end;
}
if (!get_name(bp, &name, flags))
goto end;
if (!get_header_and_data(bp, &headerB, &dataB, name, flags))
goto end;
EVP_DecodeInit(ctx);
BIO_get_mem_ptr(dataB, &buf_mem);
len = buf_mem->length;
if (EVP_DecodeUpdate(ctx, (unsigned char*)buf_mem->data, &len,
(unsigned char*)buf_mem->data, len) < 0
|| EVP_DecodeFinal(ctx, (unsigned char*)&(buf_mem->data[len]),
&taillen) < 0) {
PEMerr(PEM_F_PEM_READ_BIO_EX, PEM_R_BAD_BASE64_DECODE);
goto end;
}
len += taillen;
buf_mem->length = len;
/* There was no data in the PEM file; avoid malloc(0). */
if (len == 0)
goto end;
headerlen = BIO_get_mem_data(headerB, NULL);
*header = pem_malloc(headerlen + 1, flags);
*data = pem_malloc(len, flags);
if (*header == NULL || *data == NULL) {
pem_free(*header, flags, 0);
pem_free(*data, flags, 0);
goto end;
}
BIO_read(headerB, *header, headerlen);
(*header)[headerlen] = '\0';
BIO_read(dataB, *data, len);
*len_out = len;
*name_out = name;
name = NULL;
ret = 1;
end:
EVP_ENCODE_CTX_free(ctx);
pem_free(name, flags, 0);
BIO_free(headerB);
BIO_free(dataB);
return ret;
}
int PEM_read_bio(BIO *bp, char **name, char **header, unsigned char **data,
long *len)
{
EVP_ENCODE_CTX ctx;
int end=0,i,k,bl=0,hl=0,nohead=0;
char buf[256];
BUF_MEM *nameB;
BUF_MEM *headerB;
BUF_MEM *dataB,*tmpB;
nameB=BUF_MEM_new();
headerB=BUF_MEM_new();
dataB=BUF_MEM_new();
if ((nameB == NULL) || (headerB == NULL) || (dataB == NULL))
{
BUF_MEM_free(nameB);
BUF_MEM_free(headerB);
BUF_MEM_free(dataB);
PEMerr(PEM_F_PEM_READ_BIO,ERR_R_MALLOC_FAILURE);
return(0);
}
buf[254]='\0';
for (;;)
{
i=BIO_gets(bp,buf,254);
if (i <= 0)
{
PEMerr(PEM_F_PEM_READ_BIO,PEM_R_NO_START_LINE);
goto err;
}
while ((i >= 0) && (buf[i] <= ' ')) i--;
buf[++i]='\n'; buf[++i]='\0';
if (strncmp(buf,"-----BEGIN ",11) == 0)
{
i=strlen(&(buf[11]));
if (strncmp(&(buf[11+i-6]),"-----\n",6) != 0)
continue;
if (!BUF_MEM_grow(nameB,i+9))
{
PEMerr(PEM_F_PEM_READ_BIO,ERR_R_MALLOC_FAILURE);
goto err;
}
memcpy(nameB->data,&(buf[11]),i-6);
nameB->data[i-6]='\0';
break;
}
}
hl=0;
if (!BUF_MEM_grow(headerB,256))
{ PEMerr(PEM_F_PEM_READ_BIO,ERR_R_MALLOC_FAILURE); goto err; }
headerB->data[0]='\0';
for (;;)
{
i=BIO_gets(bp,buf,254);
if (i <= 0) break;
while ((i >= 0) && (buf[i] <= ' ')) i--;
buf[++i]='\n'; buf[++i]='\0';
if (buf[0] == '\n') break;
if (!BUF_MEM_grow(headerB,hl+i+9))
{ PEMerr(PEM_F_PEM_READ_BIO,ERR_R_MALLOC_FAILURE); goto err; }
if (strncmp(buf,"-----END ",9) == 0)
{
nohead=1;
break;
}
memcpy(&(headerB->data[hl]),buf,i);
headerB->data[hl+i]='\0';
hl+=i;
}
bl=0;
if (!BUF_MEM_grow(dataB,1024))
{ PEMerr(PEM_F_PEM_READ_BIO,ERR_R_MALLOC_FAILURE); goto err; }
dataB->data[0]='\0';
if (!nohead)
{
for (;;)
{
i=BIO_gets(bp,buf,254);
if (i <= 0) break;
while ((i >= 0) && (buf[i] <= ' ')) i--;
buf[++i]='\n'; buf[++i]='\0';
if (i != 65) end=1;
if (strncmp(buf,"-----END ",9) == 0)
break;
if (i > 65) break;
if (!BUF_MEM_grow_clean(dataB,i+bl+9))
{
PEMerr(PEM_F_PEM_READ_BIO,ERR_R_MALLOC_FAILURE);
goto err;
}
memcpy(&(dataB->data[bl]),buf,i);
dataB->data[bl+i]='\0';
bl+=i;
if (end)
{
buf[0]='\0';
i=BIO_gets(bp,buf,254);
if (i <= 0) break;
while ((i >= 0) && (buf[i] <= ' ')) i--;
buf[++i]='\n'; buf[++i]='\0';
break;
}
}
}
else
{
tmpB=headerB;
headerB=dataB;
dataB=tmpB;
bl=hl;
}
i=strlen(nameB->data);
if ( (strncmp(buf,"-----END ",9) != 0) ||
(strncmp(nameB->data,&(buf[9]),i) != 0) ||
(strncmp(&(buf[9+i]),"-----\n",6) != 0))
{
PEMerr(PEM_F_PEM_READ_BIO,PEM_R_BAD_END_LINE);
goto err;
}
EVP_DecodeInit(&ctx);
i=EVP_DecodeUpdate(&ctx,
(unsigned char *)dataB->data,&bl,
(unsigned char *)dataB->data,bl);
if (i < 0)
{
PEMerr(PEM_F_PEM_READ_BIO,PEM_R_BAD_BASE64_DECODE);
goto err;
}
i=EVP_DecodeFinal(&ctx,(unsigned char *)&(dataB->data[bl]),&k);
if (i < 0)
{
PEMerr(PEM_F_PEM_READ_BIO,PEM_R_BAD_BASE64_DECODE);
goto err;
}
bl+=k;
if (bl == 0) goto err;
*name=nameB->data;
*header=headerB->data;
*data=(unsigned char *)dataB->data;
*len=bl;
OPENSSL_free(nameB);
OPENSSL_free(headerB);
OPENSSL_free(dataB);
return(1);
err:
BUF_MEM_free(nameB);
BUF_MEM_free(headerB);
BUF_MEM_free(dataB);
return(0);
}
(unsigned char *)&(ctx->tmp[jj]),i-jj);
ctx->tmp_len=i-jj;
}
ctx->buf_len=0;
if (z > 0)
{
ctx->buf_len=z;
i=1;
}
else
i=z;
}
else
{
i=EVP_DecodeUpdate(&(ctx->base64),
(unsigned char *)ctx->buf,&ctx->buf_len,
(unsigned char *)ctx->tmp,i);
ctx->tmp_len = 0;
}
ctx->buf_off=0;
if (i < 0)
{
ret_code=0;
ctx->buf_len=0;
break;
}
if (ctx->buf_len <= outl)
i=ctx->buf_len;
else
i=outl;
static int b64_read(BIO *b, char *out, int outl)
{
int ret=0,i,ii,j,k,x,n,num,ret_code=0;
BIO_B64_CTX *ctx;
unsigned char *p,*q;
if (out == NULL) return(0);
ctx=(BIO_B64_CTX *)b->ptr;
if ((ctx == NULL) || (b->next_bio == NULL)) return(0);
if (ctx->encode != B64_DECODE)
{
ctx->encode=B64_DECODE;
ctx->buf_len=0;
ctx->buf_off=0;
ctx->tmp_len=0;
EVP_DecodeInit(&(ctx->base64));
}
/* First check if there are bytes decoded/encoded */
if (ctx->buf_len > 0)
{
i=ctx->buf_len-ctx->buf_off;
if (i > outl) i=outl;
OPENSSL_assert(ctx->buf_off+i < (int)sizeof(ctx->buf));
memcpy(out,&(ctx->buf[ctx->buf_off]),i);
ret=i;
out+=i;
outl-=i;
ctx->buf_off+=i;
if (ctx->buf_len == ctx->buf_off)
{
ctx->buf_len=0;
ctx->buf_off=0;
}
}
/* At this point, we have room of outl bytes and an empty
* buffer, so we should read in some more. */
ret_code=0;
while (outl > 0)
{
if (ctx->cont <= 0)
break;
i=BIO_read(b->next_bio,&(ctx->tmp[ctx->tmp_len]),
B64_BLOCK_SIZE-ctx->tmp_len);
if (i <= 0)
{
ret_code=i;
/* Should be continue next time we are called? */
if (!BIO_should_retry(b->next_bio))
{
ctx->cont=i;
/* If buffer empty break */
if(ctx->tmp_len == 0)
break;
/* Fall through and process what we have */
else
i = 0;
}
/* else we retry and add more data to buffer */
else
break;
}
i+=ctx->tmp_len;
ctx->tmp_len = i;
/* We need to scan, a line at a time until we
* have a valid line if we are starting. */
if (ctx->start && (BIO_get_flags(b) & BIO_FLAGS_BASE64_NO_NL))
{
/* ctx->start=1; */
ctx->tmp_len=0;
}
else if (ctx->start)
{
q=p=(unsigned char *)ctx->tmp;
for (j=0; j<i; j++)
{
if (*(q++) != '\n') continue;
/* due to a previous very long line,
* we need to keep on scanning for a '\n'
* before we even start looking for
* base64 encoded stuff. */
if (ctx->tmp_nl)
{
p=q;
ctx->tmp_nl=0;
continue;
}
k=EVP_DecodeUpdate(&(ctx->base64),
(unsigned char *)ctx->buf,
&num,p,q-p);
if ((k <= 0) && (num == 0) && (ctx->start))
EVP_DecodeInit(&ctx->base64);
else
{
if (p != (unsigned char *)
&(ctx->tmp[0]))
{
i-=(p- (unsigned char *)
&(ctx->tmp[0]));
for (x=0; x < i; x++)
ctx->tmp[x]=p[x];
}
EVP_DecodeInit(&ctx->base64);
ctx->start=0;
break;
}
p=q;
}
/* we fell off the end without starting */
if (j == i)
{
/* Is this is one long chunk?, if so, keep on
* reading until a new line. */
if (p == (unsigned char *)&(ctx->tmp[0]))
{
/* Check buffer full */
if (i == B64_BLOCK_SIZE)
{
ctx->tmp_nl=1;
ctx->tmp_len=0;
}
}
else if (p != q) /* finished on a '\n' */
{
n=q-p;
for (ii=0; ii<n; ii++)
ctx->tmp[ii]=p[ii];
ctx->tmp_len=n;
}
/* else finished on a '\n' */
continue;
}
else
ctx->tmp_len=0;
}
/* If buffer isn't full and we can retry then
* restart to read in more data.
*/
else if ((i < B64_BLOCK_SIZE) && (ctx->cont > 0))
continue;
if (BIO_get_flags(b) & BIO_FLAGS_BASE64_NO_NL)
{
int z,jj;
jj=(i>>2)<<2;
z=EVP_DecodeBlock((unsigned char *)ctx->buf,
(unsigned char *)ctx->tmp,jj);
if (jj > 2)
{
if (ctx->tmp[jj-1] == '=')
{
z--;
if (ctx->tmp[jj-2] == '=')
z--;
}
}
/* z is now number of output bytes and jj is the
* number consumed */
if (jj != i)
{
memcpy((unsigned char *)ctx->tmp,
(unsigned char *)&(ctx->tmp[jj]),i-jj);
ctx->tmp_len=i-jj;
}
ctx->buf_len=0;
if (z > 0)
{
ctx->buf_len=z;
i=1;
}
else
i=z;
}
else
{
bool OpenSSLCryptoKeyDSA::verifyBase64Signature(unsigned char * hashBuf,
unsigned int hashLen,
char * base64Signature,
unsigned int sigLen) {
// Use the currently loaded key to validate the Base64 encoded signature
if (mp_dsaKey == NULL) {
throw XSECCryptoException(XSECCryptoException::DSAError,
"OpenSSL:DSA - Attempt to validate signature with empty key");
}
unsigned char sigVal[512];
int sigValLen;
int err;
/*
BIO * b64 = BIO_new(BIO_f_base64());
BIO * bmem = BIO_new(BIO_s_mem());
BIO_set_mem_eof_return(bmem, 0);
b64 = BIO_push(b64, bmem);
// Translate signature from Base64
BIO_write(bmem, base64Signature, sigLen);
sigValLen = BIO_read(b64, sigVal, 512);
*/
EVP_ENCODE_CTX m_dctx;
int rc;
EVP_DecodeInit(&m_dctx);
rc = EVP_DecodeUpdate(&m_dctx,
sigVal,
&sigValLen,
(unsigned char *) base64Signature,
sigLen);
if (rc < 0) {
throw XSECCryptoException(XSECCryptoException::DSAError,
"OpenSSL:DSA - Error during Base64 Decode");
}
int t = 0;
EVP_DecodeFinal(&m_dctx, &sigVal[sigValLen], &t);
sigValLen += t;
if (sigValLen != 40) {
throw XSECCryptoException(XSECCryptoException::DSAError,
"OpenSSL:DSA - Signature Length incorrect");
}
// Translate to BNs and thence to DSA_SIG
BIGNUM * R = BN_bin2bn(sigVal, 20, NULL);
BIGNUM * S = BN_bin2bn(&sigVal[20], 20, NULL);
DSA_SIG * dsa_sig = DSA_SIG_new();
dsa_sig->r = BN_dup(R);
dsa_sig->s = BN_dup(S);
unsigned char sigValTranslatedBuf[256];
unsigned char * sigValTranslated = sigValTranslatedBuf;
int sigValTranslatedLen;
sigValTranslatedLen = i2d_DSA_SIG(dsa_sig, &sigValTranslated);
// Now we have a signature and a key - lets check
err = DSA_do_verify(hashBuf, hashLen, dsa_sig, mp_dsaKey);
DSA_SIG_free(dsa_sig);
if (err < 0) {
throw XSECCryptoException(XSECCryptoException::DSAError,
"OpenSSL:DSA - Error validating signature");
}
return (err == 1);
}
/*
* Convert a base64 string into raw byte array representation.
* Returns the length of the decoded data, or -1 on error.
*/
static int t_fromb64(unsigned char *a, size_t alen, const char *src)
{
EVP_ENCODE_CTX *ctx;
int outl = 0, outl2 = 0;
size_t size, padsize;
const unsigned char *pad = (const unsigned char *)"00";
while (*src == ' ' || *src == '\t' || *src == '\n')
++src;
size = strlen(src);
padsize = 4 - (size & 3);
padsize &= 3;
/* Four bytes in src become three bytes output. */
if (size > INT_MAX || ((size + padsize) / 4) * 3 > alen)
return -1;
ctx = EVP_ENCODE_CTX_new();
if (ctx == NULL)
return -1;
/*
* This should never occur because 1 byte of data always requires 2 bytes of
* encoding, i.e.
* 0 bytes unencoded = 0 bytes encoded
* 1 byte unencoded = 2 bytes encoded
* 2 bytes unencoded = 3 bytes encoded
* 3 bytes unencoded = 4 bytes encoded
* 4 bytes unencoded = 6 bytes encoded
* etc
*/
if (padsize == 3) {
outl = -1;
goto err;
}
/* Valid padsize values are now 0, 1 or 2 */
EVP_DecodeInit(ctx);
evp_encode_ctx_set_flags(ctx, EVP_ENCODE_CTX_USE_SRP_ALPHABET);
/* Add any encoded padding that is required */
if (padsize != 0
&& EVP_DecodeUpdate(ctx, a, &outl, pad, padsize) < 0) {
outl = -1;
goto err;
}
if (EVP_DecodeUpdate(ctx, a, &outl2, (const unsigned char *)src, size) < 0) {
outl = -1;
goto err;
}
outl += outl2;
EVP_DecodeFinal(ctx, a + outl, &outl2);
outl += outl2;
/* Strip off the leading padding */
if (padsize != 0) {
if ((int)padsize >= outl) {
outl = -1;
goto err;
}
/*
* If we added 1 byte of padding prior to encoding then we have 2 bytes
* of "real" data which gets spread across 4 encoded bytes like this:
* (6 bits pad)(2 bits pad | 4 bits data)(6 bits data)(6 bits data)
* So 1 byte of pre-encoding padding results in 1 full byte of encoded
* padding.
* If we added 2 bytes of padding prior to encoding this gets encoded
* as:
* (6 bits pad)(6 bits pad)(4 bits pad | 2 bits data)(6 bits data)
* So 2 bytes of pre-encoding padding results in 2 full bytes of encoded
* padding, i.e. we have to strip the same number of bytes of padding
* from the encoded data as we added to the pre-encoded data.
*/
memmove(a, a + padsize, outl - padsize);
outl -= padsize;
}
err:
EVP_ENCODE_CTX_free(ctx);
return outl;
}
static int b64_read(BIO *b, char *out, int outl)
{
int ret = 0, i, ii, j, k, x, n, num, ret_code = 0;
BIO_B64_CTX *ctx;
unsigned char *p, *q;
BIO *next;
if (out == NULL)
return 0;
ctx = (BIO_B64_CTX *)BIO_get_data(b);
next = BIO_next(b);
if ((ctx == NULL) || (next == NULL))
return 0;
BIO_clear_retry_flags(b);
if (ctx->encode != B64_DECODE) {
ctx->encode = B64_DECODE;
ctx->buf_len = 0;
ctx->buf_off = 0;
ctx->tmp_len = 0;
EVP_DecodeInit(ctx->base64);
}
/* First check if there are bytes decoded/encoded */
if (ctx->buf_len > 0) {
OPENSSL_assert(ctx->buf_len >= ctx->buf_off);
i = ctx->buf_len - ctx->buf_off;
if (i > outl)
i = outl;
OPENSSL_assert(ctx->buf_off + i < (int)sizeof(ctx->buf));
memcpy(out, &(ctx->buf[ctx->buf_off]), i);
ret = i;
out += i;
outl -= i;
ctx->buf_off += i;
if (ctx->buf_len == ctx->buf_off) {
ctx->buf_len = 0;
ctx->buf_off = 0;
}
}
/*
* At this point, we have room of outl bytes and an empty buffer, so we
* should read in some more.
*/
ret_code = 0;
while (outl > 0) {
if (ctx->cont <= 0)
break;
i = BIO_read(next, &(ctx->tmp[ctx->tmp_len]),
B64_BLOCK_SIZE - ctx->tmp_len);
if (i <= 0) {
ret_code = i;
/* Should we continue next time we are called? */
if (!BIO_should_retry(next)) {
ctx->cont = i;
/* If buffer empty break */
if (ctx->tmp_len == 0)
break;
/* Fall through and process what we have */
else
i = 0;
}
/* else we retry and add more data to buffer */
else
break;
}
i += ctx->tmp_len;
ctx->tmp_len = i;
/*
* We need to scan, a line at a time until we have a valid line if we
* are starting.
*/
if (ctx->start && (BIO_get_flags(b) & BIO_FLAGS_BASE64_NO_NL)) {
/* ctx->start=1; */
ctx->tmp_len = 0;
} else if (ctx->start) {
q = p = (unsigned char *)ctx->tmp;
num = 0;
for (j = 0; j < i; j++) {
if (*(q++) != '\n')
continue;
/*
* due to a previous very long line, we need to keep on
* scanning for a '\n' before we even start looking for
* base64 encoded stuff.
*/
if (ctx->tmp_nl) {
p = q;
ctx->tmp_nl = 0;
continue;
}
k = EVP_DecodeUpdate(ctx->base64,
(unsigned char *)ctx->buf,
&num, p, q - p);
if ((k <= 0) && (num == 0) && (ctx->start))
EVP_DecodeInit(ctx->base64);
else {
if (p != (unsigned char *)
&(ctx->tmp[0])) {
i -= (p - (unsigned char *)
&(ctx->tmp[0]));
for (x = 0; x < i; x++)
ctx->tmp[x] = p[x];
}
EVP_DecodeInit(ctx->base64);
ctx->start = 0;
break;
}
p = q;
}
/* we fell off the end without starting */
if ((j == i) && (num == 0)) {
/*
* Is this is one long chunk?, if so, keep on reading until a
* new line.
*/
if (p == (unsigned char *)&(ctx->tmp[0])) {
/* Check buffer full */
if (i == B64_BLOCK_SIZE) {
ctx->tmp_nl = 1;
ctx->tmp_len = 0;
}
} else if (p != q) { /* finished on a '\n' */
n = q - p;
for (ii = 0; ii < n; ii++)
ctx->tmp[ii] = p[ii];
ctx->tmp_len = n;
}
/* else finished on a '\n' */
continue;
} else {
ctx->tmp_len = 0;
}
} else if ((i < B64_BLOCK_SIZE) && (ctx->cont > 0)) {
/*
* If buffer isn't full and we can retry then restart to read in
* more data.
*/
continue;
}
if (BIO_get_flags(b) & BIO_FLAGS_BASE64_NO_NL) {
int z, jj;
jj = i & ~3; /* process per 4 */
z = EVP_DecodeBlock((unsigned char *)ctx->buf,
(unsigned char *)ctx->tmp, jj);
if (jj > 2) {
if (ctx->tmp[jj - 1] == '=') {
z--;
if (ctx->tmp[jj - 2] == '=')
z--;
}
}
/*
* z is now number of output bytes and jj is the number consumed
*/
if (jj != i) {
memmove(ctx->tmp, &ctx->tmp[jj], i - jj);
ctx->tmp_len = i - jj;
}
ctx->buf_len = 0;
if (z > 0) {
ctx->buf_len = z;
}
i = z;
} else {
i = EVP_DecodeUpdate(ctx->base64,
(unsigned char *)ctx->buf, &ctx->buf_len,
(unsigned char *)ctx->tmp, i);
ctx->tmp_len = 0;
}
/*
* If eof or an error was signalled, then the condition
* 'ctx->cont <= 0' will prevent b64_read() from reading
* more data on subsequent calls. This assignment was
* deleted accidentally in commit 5562cfaca4f3.
*/
ctx->cont = i;
ctx->buf_off = 0;
if (i < 0) {
ret_code = 0;
ctx->buf_len = 0;
break;
}
if (ctx->buf_len <= outl)
i = ctx->buf_len;
else
i = outl;
memcpy(out, ctx->buf, i);
ret += i;
ctx->buf_off = i;
if (ctx->buf_off == ctx->buf_len) {
ctx->buf_len = 0;
ctx->buf_off = 0;
}
outl -= i;
out += i;
}
/* BIO_clear_retry_flags(b); */
BIO_copy_next_retry(b);
return ((ret == 0) ? ret_code : ret);
}
bool OpenSSLCryptoKeyRSA::verifySHA1PKCS1Base64Signature(const unsigned char * hashBuf,
unsigned int hashLen,
const char * base64Signature,
unsigned int sigLen,
hashMethod hm = HASH_SHA1) {
// Use the currently loaded key to validate the Base64 encoded signature
if (mp_rsaKey == NULL) {
throw XSECCryptoException(XSECCryptoException::RSAError,
"OpenSSL:RSA - Attempt to validate signature with empty key");
}
char* cleanedBase64Signature;
unsigned int cleanedBase64SignatureLen = 0;
cleanedBase64Signature =
XSECCryptoBase64::cleanBuffer(base64Signature, sigLen, cleanedBase64SignatureLen);
ArrayJanitor<char> j_cleanedBase64Signature(cleanedBase64Signature);
int sigValLen;
unsigned char* sigVal = new unsigned char[sigLen + 1];
ArrayJanitor<unsigned char> j_sigVal(sigVal);
EVP_ENCODE_CTX m_dctx;
EVP_DecodeInit(&m_dctx);
int rc = EVP_DecodeUpdate(&m_dctx,
sigVal,
&sigValLen,
(unsigned char *) cleanedBase64Signature,
cleanedBase64SignatureLen);
if (rc < 0) {
throw XSECCryptoException(XSECCryptoException::RSAError,
"OpenSSL:RSA - Error during Base64 Decode");
}
int t = 0;
EVP_DecodeFinal(&m_dctx, &sigVal[sigValLen], &t);
sigValLen += t;
// Now decrypt
unsigned char * decryptBuf;
// Decrypt will always be longer than (RSA_len(key) - 11)
decryptBuf = new unsigned char [RSA_size(mp_rsaKey)];
ArrayJanitor<unsigned char> j_decryptBuf(decryptBuf);
// Note at this time only supports PKCS1 padding
// As that is what is defined in the standard.
// If this ever changes we will need to pass some paramaters
// into this function to allow it to determine what the
// padding should be and what the message digest OID should
// be.
int decryptSize = RSA_public_decrypt(sigValLen,
sigVal,
decryptBuf,
mp_rsaKey,
RSA_PKCS1_PADDING);
if (decryptSize < 0) {
/* throw XSECCryptoException(XSECCryptoException::RSAError,
"OpenSSL:RSA::verify() - Error decrypting signature"); */
// Really - this is a failed signature check, not an exception!
return false;
}
/* Check the OID */
int oidLen = 0;
unsigned char * oid = getRSASigOID(hm, oidLen);
if (oid == NULL) {
throw XSECCryptoException(XSECCryptoException::RSAError,
"OpenSSL:RSA::verify() - Unsupported HASH algorithm for RSA");
}
if (decryptSize != (int) (oidLen + hashLen) || hashLen != oid[oidLen-1]) {
return false;
}
for (t = 0; t < oidLen; ++t) {
if (oid[t] != decryptBuf[t]) {
return false;
}
}
for (;t < decryptSize; ++t) {
if (hashBuf[t-oidLen] != decryptBuf[t]) {
return false;
}
}
// All OK
return true;
}
//--------------------------------------------------
// Reads in signed XML document and extracts the desired data file
// pSigDoc - signed document object if exists. Can be NULL
// szFileName - digidoc filename
// szDataFileName - name of the file where to store embedded data.
// szDocId - DataFile Id atribute value
// szCharset - convert DataFile content to charset
//--------------------------------------------------
EXP_OPTION int ddocExtractDataFile(SignedDoc* pSigDoc, const char* szFileName,
const char* szDataFileName, const char* szDocId,
const char* szCharset)
{
FILE *fIn = 0, *fOut = 0;
int err = ERR_OK, i, nRead, lt, la, lc, j, ld, lb, l, eState = 0, fs = 0;
long len, lExtr = 0, lSize = 0;
char chars[1050], tag[100], attr[100], con[1030], dec[70], b64line[70];
unsigned char b64 = 0, nNc = 0, bFound = 0;
void *pBuf;
EVP_ENCODE_CTX ectx;
#ifdef WIN32
wchar_t *convFileName = 0, *convDataFileName = 0;
i= 0;
err = utf82unicode((const char*)szFileName, (char**)&convFileName, &i);
ddocDebug(3, "ddocExtractDataFile", "file: %s, conv-file: %s len: %d", szFileName, convFileName, i);
i= 0;
err = utf82unicode((const char*)szDataFileName, (char**)&convDataFileName, &i);
ddocDebug(3, "ddocExtractDataFile", "dfile: %s, conv-dfile: %s len: %d", szDataFileName, convDataFileName, i);
#endif
RETURN_IF_NULL_PARAM(szFileName);
RETURN_IF_NULL_PARAM(szDataFileName);
RETURN_IF_NULL_PARAM(szDocId);
RETURN_IF_NULL_PARAM(szCharset);
clearErrors();
ddocDebug(3, "ddocExtractDataFile", "SigDoc: %s, docid: %s, digidoc: %s, file: %s, charset: %s", (pSigDoc ? "OK" : "NULL"), szDocId, szFileName, szDataFileName, szCharset);
if(szCharset && !strcmp(szCharset, "NO-CHANGE"))
nNc = 1;
// try reading from memory if already cached?
nRead = ddocGetDataFileCachedData(pSigDoc, szDocId, &pBuf, &len);
if(pBuf) { // gotcha
ddocDebug(3, "ddocSaxExtractDataFile", "Using cached data: %d bytes", len);
#ifdef WIN32
if((fOut = _wfopen(convDataFileName, L"wb")) != NULL) {
#else
if((fOut = fopen(szDataFileName, "wb")) != NULL) {
#endif
fwrite(pBuf, 1, len, fOut);
fclose(fOut);
} else {
free(pBuf);
ddocDebug(1, "ddocSaxExtractDataFile", "Error writing file: %s", szDataFileName);
SET_LAST_ERROR_RETURN_CODE(ERR_FILE_WRITE);
}
free(pBuf);
return nRead;
}
// open ddoc file
#ifdef WIN32
if((fIn = _wfopen(convFileName, L"rb")) != NULL) {
#else
if((fIn = fopen(szFileName, "rb")) != NULL) {
#endif
ddocDebug(3, "ddocExtractDataFile", "Opened ddoc-file: %s", szFileName);
do {
nRead = fread(chars, 1, 1024, fIn);
chars[nRead] = 0;
ddocDebug(6, "ddocExtractDataFile", "Parsing %d bytes: \n%s\n", nRead, chars);
// handle read data
for(i = 0; i < nRead; i++) {
switch(eState) {
case ST_START: // search '<?xml'
if(chars[i] == '<' &&
!strncmp(chars+i, "<?xml", 5)) {
eState = ST_XML;
i += 4;
}
break;
case ST_XML: // search '<'
if(chars[i] == '<') {
eState = ST_TAG_NM;
lt = 0;
tag[lt] = 0;
}
break;
case ST_TAG_NM: // read tag name
if(isalnum(chars[i]) || chars[i] == ':' || chars[i] == '/') {
if(lt < sizeof(tag)-1) {
tag[lt] = chars[i];
tag[++lt] = 0;
} else {
ddocDebug(1, "ddocSaxExtractDataFile", "Invalid xml tag-len > %d", sizeof(tag));
SET_LAST_ERROR_RETURN_CODE(ERR_FILE_READ);
}
} else if(chars[i] == '>') { // tag ended - content
eState = ST_CON;
} else { // expecting atributes
eState = ST_TAG_WS;
}
break;
case ST_TAG_WS:
if(chars[i] == '>') {
if(bFound) {
eState = ST_DF_CON;
if(b64)
EVP_DecodeInit(&ectx);
} else
eState = ST_CON; // tag endded - content
lc = 0;
con[lc] = 0;
} else if(isalnum(chars[i])) {
eState = ST_ATTR_NM; // attr name started
la = 0;
attr[la] = chars[i];
attr[++la] = 0;
}
break;
case ST_ATTR_NM:
if(isalnum(chars[i])) {
if(la < (int)sizeof(attr)-1) {
attr[la] = chars[i];
attr[++la] = 0;
}
else
ddocDebug(1, "ddocExtractDataFile", "Truncating attr name: %s", attr);
break;
//19.11.08 added support for '
} else if(chars[i] == '\"'/*|| chars[i] == '\''*/) {
eState = ST_ATTR_CON;
lc = 0;
con[lc] = 0;
fs = 2;
} else if(chars[i] == '\'' && fs==0) {
eState = ST_ATTR_CON;
lc = 0;
con[lc] = 0;
fs = 1;
} else {
eState = ST_ATTR_WS;
}
break;
case ST_ATTR_WS:
//19.11.08 added support for '
if(chars[i] == '\"'/*|| chars[i] == '\''*/) {
eState = ST_ATTR_CON;
lc = 0;
con[lc] = 0;
} else if(chars[i] == '\'' && fs==1) {
eState = ST_ATTR_CON;
lc = 0;
con[lc] = 0;
} else {
eState = ST_TAG_WS;
}
break;
case ST_ATTR_CON:
//19.11.08 added support for '
if(chars[i] != '\"' /*&& chars[i] != '\''*/) {
if(lc < (int)sizeof(con)-1) {
con[lc] = chars[i];
con[++lc] = 0;
} else
ddocDebug(1, "ddocExtractDataFile", "Truncating attr content: %s", attr);
} else if(chars[i] == '\'' && fs==1) {
if(lc < (int)sizeof(con)-1) {
con[lc] = chars[i];
con[++lc] = 0;
} else
ddocDebug(1, "ddocExtractDataFile", "Truncating attr content: %s", attr);
} else {
eState = ST_TAG_WS;
// attribute value complete
if(!strcmp(tag, "DataFile")) {
// ddocDebug(3, "ddocSaxExtractDataFile", "DataFile start, attr: %s", attr);
if(!strcmp(attr, "ContentType")) {
b64 = (!strcmp(con, "EMBEDDED_BASE64")) ? 1 : 0;
lb = 0;
b64line[0] = 0;
}
if(!strcmp(attr, "Size") && bFound) {
lSize = atol(con);
}
if(!strcmp(attr, "Id")) {
ddocDebug(3, "ddocSaxExtractDataFile", "Found Id: %s searching id: %s", con, szDocId);
if(!strcmp(con, szDocId)) {
bFound = 1;
#ifdef WIN32
fOut = _wfopen(convDataFileName, L"wb");
ddocDebug(3, "ddocSaxExtractDataFile", "Opening file: %s handle: %s", convDataFileName, (fOut ? "OK" : "NULL"));
#else
fOut = fopen(szDataFileName, "wb");
ddocDebug(3, "ddocSaxExtractDataFile", "Opening file: %s handle: %s", szDataFileName, (fOut ? "OK" : "NULL"));
#endif
if(!fOut) {
SET_LAST_ERROR(ERR_FILE_WRITE);
err = ERR_FILE_WRITE;
return err;
}
}
}
}
}
break;
case ST_CON:
if(chars[i] == '<') {
eState = ST_TAG_NM;
lt = 0;
tag[lt] = 0;
} else {
//con[lc] = chars[i];
//con[++lc] = 0;
}
break;
case ST_DF_START: // find tag end
if(chars[i] == '>') {
eState = ST_DF_CON;
lc = 0;
con[lc] = 0;
if(b64)
EVP_DecodeInit(&ectx);
}
break;
case ST_DF_CON:
if(chars[i] == '<') {
eState = ST_DF_TAG;
lt = 0;
tag[lt] = 0;
} else {
if(lc < (int)sizeof(con) - 1) {
if(b64 && !nNc) {
for(l = 0; l < lc; ) {
while(lb < 64 && l < lc && l < sizeof(con)) {
if(con[l] != '\n' && con[l] != '\r')
b64line[lb++] = con[l];
l++;
}
if(lb == 64) {
b64line[lb++] = '\n';
b64line[lb] = 0;
ld = sizeof(dec);
dec[0] = 0;
EVP_DecodeUpdate(&ectx, (unsigned char*)dec, &ld, (unsigned char*)b64line, lb);
lExtr += ld;
if(ld > 0)
fwrite(dec, 1, ld, fOut);
lb = 0;
}
}
} else if(nNc || !b64) {
lExtr += lc;
fwrite(con, 1, lc, fOut);
}
lc = 0;
}
if(lc < sizeof(con)-1) {
con[lc] = chars[i];
con[++lc] = 0;
}
}
break;
case ST_DF_TAG:
if(/*isalnum(chars[i]) || chars[i] == ':' || chars[i] == '/' ||*/ chars[i] != '>') {
if(lt < sizeof(tag)-1) {
tag[lt] = chars[i];
tag[++lt] = 0;
} else {
ddocDebug(1, "ddocSaxExtractDataFile", "Invalid xml tag-len > %d", sizeof(tag));
SET_LAST_ERROR_RETURN_CODE(ERR_FILE_READ);
}
} else { // DF intenal tag name ready
if(!strcmp(tag, "/DataFile")) { // end of DF
eState = ST_DF_END;
} else { // wrong tag - this is content
if(lc < sizeof(con)-1) {
con[lc] = '<';
for(j = 0; j < lt; j++)
con[++lc] = tag[j];
con[++lc] = '>';
con[++lc] = 0;
}
eState = ST_DF_CON;
}
}
if(eState != ST_DF_END)
break;
case ST_DF_END:
if(b64 && !nNc) {
if(lc > 0) {
for(l = 0; l < lc; ) {
while(lb < 64 && l < lc) {
if(con[l] != '\n' && con[l] != '\r')
b64line[lb++] = con[l];
l++;
}
b64line[lb++] = '\n';
b64line[lb] = 0;
ld = sizeof(dec);
dec[0] = 0;
EVP_DecodeUpdate(&ectx, (unsigned char*)dec, &ld, (unsigned char*)b64line, lb);
lExtr += ld;
if(ld > 0)
fwrite(dec, 1, ld, fOut);
lb = 0;
}
}
ld = 0;
dec[ld] = 0;
EVP_DecodeFinal(&ectx, (unsigned char*)dec, &ld);
lExtr += ld;
if(ld)
fwrite(dec, 1, ld, fOut);
} else if(nNc || !b64) {
if(lc) {
lExtr += lc;
fwrite(con, 1, lc, fOut);
lc = 0;
}
}
i = sizeof(chars);
//AM 24.09.08 RIK
eState = ST_DF_END_END;
break;
}
}
//AM 24.09.08 RIK ST_DF_END to ST_DF_END_END_END
} while(nRead > 0 && !err && eState < ST_DF_END_END);
} else {
ddocDebug(1, "ddocExtractDataFile", "Error reading file: %s", szFileName);
SET_LAST_ERROR(ERR_FILE_READ);
}
if(fIn)
fclose(fIn);
if(fOut)
fclose(fOut);
if(!nNc && lSize != lExtr) {
ddocDebug(1, "ddocExtractDataFile", "Warning! Extracted: %ld bytes but expected: %ld bytes", lExtr, lSize);
//SET_LAST_ERROR(ERR_FILE_READ);
//err = ERR_FILE_READ;
}
if(!bFound) {
ddocDebug(1, "ddocExtractDataFile", "DF: %s not found", szDocId);
SET_LAST_ERROR(ERR_FILE_WRITE);
err = ERR_FILE_WRITE;
}
ddocDebug(3, "ddocExtractDataFile", "Extracted DF: %s to %s size: %ld expected: %ld", szDocId, szDataFileName, lExtr, lSize);
#ifdef WIN32
free(convFileName);
free(convDataFileName);
#endif
return err;
}
/*
* \fn hip_xmlrpc_parse_response()
*
* \param mode is this an XML RPC GET/PUT? store response in hit/addr?
* \param xmldata pointer to XML character data
* \param len length of XML data
* \param value ptr for storing response value
* \param value_len ptr to the length of the value buffer and for
* storing response value length
*
* \return For GETs, the address or HIT is returned in addr or hit,
* and 0 is returned for success.
* For PUTs, the XML RPC return code is returned,
* which is 0 for success, or 1 or 2.
* -1 is returned on error.
*/
int hip_xmlrpc_parse_response(int mode, char *xmldata, int len,
char *value, int *value_len)
{
xmlDocPtr doc = NULL;
xmlNodePtr node, node_val;
int retval = -10, i;
xmlChar *data;
EVP_ENCODE_CTX ctx;
/* log_(NORM, "Got the DHT response (content-length=%d):\n%s\n",
* len, xmldata); // */
if ((doc = xmlParseMemory(xmldata, len)) == NULL)
{
goto parse_response_exit;
}
node = xmlDocGetRootElement(doc); /* <methodResponse> */
if (node->children)
{
node = node->children; /* <params> */
}
node = node->children;
if (!node) /* <param> */
{
goto parse_response_exit;
}
node_val = NULL;
if (!strcmp((char *)node->name, "param") && node->children &&
!strcmp((char *)node->children->name, "value"))
{
node_val = node->children->children;
}
if (!node_val)
{
goto parse_response_exit;
}
switch (mode & 0x000F)
{
case XMLRPC_MODE_PUT: /* retrieve status code only */
case XMLRPC_MODE_RM:
data = xmlNodeGetContent(node_val);
/* status code is first int that we encounter */
if (strcmp((char *)node_val->name, "int") == 0)
{
sscanf((const char *)data, "%d", &retval);
xmlFree(data);
goto parse_response_exit;
}
break;
case XMLRPC_MODE_GET: /* retrieve address or HIT */
/* <?xml version="1.0" encoding="ISO-8859-1"?>
* <methodResponse>
* <params><param><value><array><data>
* <value><array><data>
* <value><base64>AgAAAMCoAQAAAAAAA==</base64></value>
* <value><base64>AgAAAMCoAgcAAAAAA==</base64></value>
* </data></array></value>
* <value><base64></base64></value>
* </data></array></value></param></params>
* </methodResponse>
*/
if (!strcmp((char *)node_val->name, "array") &&
node_val->children &&
!strcmp((char *)node_val->children->name, "data"))
{
node = node_val->children->children;
}
if (!strcmp((char *)node->name, "value") && node->children &&
!strcmp((char *)node->children->name, "array"))
{
node = node->children->children; /* <data> */
}
/* step through array of responses */
for (node = node->children; node; node = node->next)
{
node_val = node->children; /* <value><base64> */
if ((!node_val) ||
(strcmp((char *)node_val->name, "base64")))
{
continue;
}
data = xmlNodeGetContent(node_val);
/* protect against unusually large values */
if (strlen((char *)data) >
((unsigned)(((*value_len + 2) / 3) * 4) + 1))
{
xmlFree(data);
continue;
}
/* log_(NORM, "XMLRPC GET: got the value:\n%s\n",
* data); */
/* decode base64 into value pointer */
/* *value_len = EVP_DecodeBlock((unsigned char *)value, */
/* data, strlen((char *)data)); */
EVP_DecodeInit(&ctx);
retval = EVP_DecodeUpdate(&ctx, (__u8 *)value, &i,
(__u8 *)data,
strlen((char *)data));
if (retval < 0)
{
xmlFree(data);
continue;
}
*value_len = i;
EVP_DecodeFinal(&ctx, data, &i);
retval = 0;
xmlFree(data);
/* the last value encountered will be returned */
} /* end for */
/* placemark and other tags are ignored */
break;
}
parse_response_exit:
if (doc != NULL)
{
xmlFreeDoc(doc);
}
return(retval);
}
int FMT_decrypt_stream(char *id, byte_string_t key,
FILE *infp, FILE *outfp, params_t params)
{
byte_string_t U;
byte_string_t K, V;
crypto_ctx_t ctx;
unsigned char in[crypt_buf_size];
unsigned char out[200]; //TODO: what should this be?
int inl, outl;
unsigned char data[1024];
int count;
EVP_ENCODE_CTX mime;
int result = 0;
char *s, slen;
int status;
advance_to("-----BEGIN IBE-----", infp);
advance_to("U:", infp);
mime_get(U, infp);
slen = strlen(id) + 2;
s = (char *) alloca(sizeof(char) * slen);
for(;;) {
advance_to("ID:", infp);
if (feof(infp)) {
//ID not found
return 0;
}
fgets(s, slen, infp);
if (s[strlen(id)] == '\n') { //correct length?
if (!strncmp(s, id, strlen(id))) { //compares?
break; //email has ID for us
}
}
}
advance_to("V:", infp);
mime_get(V, infp);
status = IBE_reveal_key(K, U, V, key, params);
if (status != 1) {
fprintf(outfp, "WARNING: KMAC MISMATCH. INVALID CIPHERTEXT!\n");
byte_string_clear(V);
byte_string_clear(K);
return result;
}
advance_to("W:", infp);
crypto_ctx_init(ctx);
crypto_decrypt_init(ctx, K);
EVP_DecodeInit(&mime);
for (;;) {
fgets(in, crypt_buf_size, infp);
inl = strlen(in);
if (inl < 0) {
fprintf(stderr, "read error\n");
exit(1);
}
if (inl < 2) break;
EVP_DecodeUpdate(&mime, data, &count, in, inl);
crypto_decrypt_update(ctx, out, &outl, data, count);
fwrite(out, 1, outl, outfp);
}
EVP_DecodeFinal(&mime, data, &count);
crypto_decrypt_update(ctx, out, &outl, data, count);
fwrite(out, 1, outl, outfp);
if (1 != crypto_decrypt_final(ctx, out, &outl)) {
fprintf(outfp, "crypto_decrypt_final() failed!\n");
} else {
result = 1;
}
fwrite(out, 1, outl, outfp);
crypto_ctx_clear(ctx);
byte_string_clear(K);
byte_string_clear(U);
byte_string_clear(V);
return result;
}
static void
sign_req (int fd, void *unused)
{
char thefile[80], cmd_buf[300], p7[3000];
int i, num;
unsigned char *data, *asn1;
int32_t msglen;
BIO *bio = NULL;
FILE *fp;
struct stat blah;
X509_REQ *req = NULL;
EVP_ENCODE_CTX ctx;
if (recv(fd, (char *)&msglen, sizeof(int32_t), MSG_WAITALL) < sizeof(int32_t)) {
return;
}
msglen = ntohl(msglen);
if (msglen > 3000) {
return;
}
if ((data = (unsigned char *)malloc(msglen)) == NULL) {
return;
}
if ((asn1 = (unsigned char *)malloc(msglen)) == NULL) {
free(data);
return;
}
if (recv(fd, (char *)data, msglen, MSG_WAITALL) < msglen) {
free(data);
return;
}
EVP_DecodeInit(&ctx);
EVP_DecodeUpdate(&ctx, asn1, &i, data, msglen);
num = i;
EVP_DecodeFinal(&ctx, &(asn1[i]), &i);
num += i;
free(data);
if ((bio = BIO_new_mem_buf(asn1, num)) == NULL) {
free(asn1);
goto no_cert;
}
if ((req = d2i_X509_REQ_bio(bio, NULL)) == NULL) {
free(asn1);
goto no_cert;
}
free(asn1);
BIO_free(bio); bio = NULL;
unique++;
memset(thefile, 0, sizeof(thefile));
snprintf(thefile, sizeof(thefile), "%dreq.pem", unique);
if ((fp = fopen(thefile, "w+")) == NULL) {
goto no_cert;
}
if ((bio = BIO_new(BIO_s_file())) == NULL) {
fprintf(stderr, "unable to create bio for CSR\n");
goto no_cert;
}
BIO_set_fp(bio, fp, BIO_NOCLOSE);
PEM_write_bio_X509_REQ(bio, req);
(void)BIO_flush(bio);
BIO_free(bio); bio = NULL;
fclose(fp);
snprintf(cmd_buf, sizeof(cmd_buf),
"openssl ca "
"-policy policy_anything -batch -notext "
"-config ./conf/openssl.cnf "
"-out %dcert.pem -in %dreq.pem", unique, unique);
system(cmd_buf);
unlink(thefile);
snprintf(thefile, sizeof(thefile), "%dcert.pem", unique);
if ((stat(thefile, &blah) < 0) || (blah.st_size < 1)) {
goto no_cert;
}
snprintf(cmd_buf, sizeof(cmd_buf),
"openssl crl2pkcs7 "
"-certfile %dcert.pem -outform DER -out %dder.p7 -nocrl", unique, unique);
system(cmd_buf);
unlink(thefile);
snprintf(thefile, sizeof(thefile), "%dder.p7", unique);
if (stat(thefile, &blah) < 0) {
goto no_cert;
}
i = blah.st_size;
printf("DER-encoded P7 is %d bytes\n", i);
if ((data = (unsigned char *)malloc(blah.st_size*2)) == NULL) {
goto no_cert;
}
if ((fp = fopen(thefile, "r")) == NULL) {
free(data);
goto no_cert;
}
if (fread(p7, 1, sizeof(p7), fp) < blah.st_size) {
free(data);
goto no_cert;
}
fclose(fp);
unlink(thefile);
i = 0;
EVP_EncodeInit(&ctx);
EVP_EncodeUpdate(&ctx, data, &i, (unsigned char *)p7, blah.st_size);
num = i;
EVP_EncodeFinal(&ctx, (unsigned char *)&(data[i]), &i);
num += i;
printf("PEM-encoded P7 is %d bytes\n", num);
msglen = num;
msglen = htonl(msglen);
send(fd, (char *)&msglen, sizeof(int32_t), 0);
send(fd, (char *)data, num, 0);
free(data);
no_cert:
BIO_free(bio);
srv_rem_input(srvctx, fd);
close(fd);
return;
}
static int b64_read(BIO *b, char *out, int outl) {
int ret = 0, i, ii, j, k, x, n, num, ret_code = 0;
BIO_B64_CTX *ctx;
uint8_t *p, *q;
if (out == NULL) {
return 0;
}
ctx = (BIO_B64_CTX *) b->ptr;
if (ctx == NULL || b->next_bio == NULL) {
return 0;
}
BIO_clear_retry_flags(b);
if (ctx->encode != B64_DECODE) {
ctx->encode = B64_DECODE;
ctx->buf_len = 0;
ctx->buf_off = 0;
ctx->tmp_len = 0;
EVP_DecodeInit(&ctx->base64);
}
// First check if there are bytes decoded/encoded
if (ctx->buf_len > 0) {
assert(ctx->buf_len >= ctx->buf_off);
i = ctx->buf_len - ctx->buf_off;
if (i > outl) {
i = outl;
}
assert(ctx->buf_off + i < (int)sizeof(ctx->buf));
OPENSSL_memcpy(out, &ctx->buf[ctx->buf_off], i);
ret = i;
out += i;
outl -= i;
ctx->buf_off += i;
if (ctx->buf_len == ctx->buf_off) {
ctx->buf_len = 0;
ctx->buf_off = 0;
}
}
// At this point, we have room of outl bytes and an empty buffer, so we
// should read in some more.
ret_code = 0;
while (outl > 0) {
if (ctx->cont <= 0) {
break;
}
i = BIO_read(b->next_bio, &(ctx->tmp[ctx->tmp_len]),
B64_BLOCK_SIZE - ctx->tmp_len);
if (i <= 0) {
ret_code = i;
// Should we continue next time we are called?
if (!BIO_should_retry(b->next_bio)) {
ctx->cont = i;
// If buffer empty break
if (ctx->tmp_len == 0) {
break;
} else {
// Fall through and process what we have
i = 0;
}
} else {
// else we retry and add more data to buffer
break;
}
}
i += ctx->tmp_len;
ctx->tmp_len = i;
// We need to scan, a line at a time until we have a valid line if we are
// starting.
if (ctx->start && (BIO_test_flags(b, BIO_FLAGS_BASE64_NO_NL))) {
// ctx->start = 1;
ctx->tmp_len = 0;
} else if (ctx->start) {
q = p = (uint8_t *)ctx->tmp;
num = 0;
for (j = 0; j < i; j++) {
if (*(q++) != '\n') {
continue;
}
// due to a previous very long line, we need to keep on scanning for a
// '\n' before we even start looking for base64 encoded stuff.
if (ctx->tmp_nl) {
p = q;
ctx->tmp_nl = 0;
continue;
}
k = EVP_DecodeUpdate(&(ctx->base64), (uint8_t *)ctx->buf, &num, p,
q - p);
if (k <= 0 && num == 0 && ctx->start) {
EVP_DecodeInit(&ctx->base64);
} else {
if (p != (uint8_t *)&(ctx->tmp[0])) {
i -= (p - (uint8_t *)&(ctx->tmp[0]));
for (x = 0; x < i; x++) {
ctx->tmp[x] = p[x];
}
}
EVP_DecodeInit(&ctx->base64);
ctx->start = 0;
break;
}
p = q;
}
// we fell off the end without starting
if (j == i && num == 0) {
// Is this is one long chunk?, if so, keep on reading until a new
// line.
if (p == (uint8_t *)&(ctx->tmp[0])) {
// Check buffer full
if (i == B64_BLOCK_SIZE) {
ctx->tmp_nl = 1;
ctx->tmp_len = 0;
}
} else if (p != q) { // finished on a '\n'
n = q - p;
for (ii = 0; ii < n; ii++) {
ctx->tmp[ii] = p[ii];
}
ctx->tmp_len = n;
}
// else finished on a '\n'
continue;
} else {
ctx->tmp_len = 0;
}
} else if (i < B64_BLOCK_SIZE && ctx->cont > 0) {
// If buffer isn't full and we can retry then restart to read in more
// data.
continue;
}
if (BIO_test_flags(b, BIO_FLAGS_BASE64_NO_NL)) {
int z, jj;
jj = i & ~3; // process per 4
z = EVP_DecodeBlock((uint8_t *)ctx->buf, (uint8_t *)ctx->tmp, jj);
if (jj > 2) {
if (ctx->tmp[jj - 1] == '=') {
z--;
if (ctx->tmp[jj - 2] == '=') {
z--;
}
}
}
// z is now number of output bytes and jj is the number consumed.
if (jj != i) {
OPENSSL_memmove(ctx->tmp, &ctx->tmp[jj], i - jj);
ctx->tmp_len = i - jj;
}
ctx->buf_len = 0;
if (z > 0) {
ctx->buf_len = z;
}
i = z;
} else {
i = EVP_DecodeUpdate(&(ctx->base64), (uint8_t *)ctx->buf,
&ctx->buf_len, (uint8_t *)ctx->tmp, i);
ctx->tmp_len = 0;
}
ctx->buf_off = 0;
if (i < 0) {
ret_code = 0;
ctx->buf_len = 0;
break;
}
if (ctx->buf_len <= outl) {
i = ctx->buf_len;
} else {
i = outl;
}
OPENSSL_memcpy(out, ctx->buf, i);
ret += i;
ctx->buf_off = i;
if (ctx->buf_off == ctx->buf_len) {
ctx->buf_len = 0;
ctx->buf_off = 0;
}
outl -= i;
out += i;
}
BIO_copy_next_retry(b);
return ret == 0 ? ret_code : ret;
}