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-rw-r--r--crypto/evp/encode.c696
1 files changed, 351 insertions, 345 deletions
diff --git a/crypto/evp/encode.c b/crypto/evp/encode.c
index 4654bdc61a64..d1d8a07c14ad 100644
--- a/crypto/evp/encode.c
+++ b/crypto/evp/encode.c
@@ -5,21 +5,21 @@
* This package is an SSL implementation written
* by Eric Young (eay@cryptsoft.com).
* The implementation was written so as to conform with Netscapes SSL.
- *
+ *
* This library is free for commercial and non-commercial use as long as
* the following conditions are aheared to. The following conditions
* apply to all code found in this distribution, be it the RC4, RSA,
* lhash, DES, etc., code; not just the SSL code. The SSL documentation
* included with this distribution is covered by the same copyright terms
* except that the holder is Tim Hudson (tjh@cryptsoft.com).
- *
+ *
* Copyright remains Eric Young's, and as such any Copyright notices in
* the code are not to be removed.
* If this package is used in a product, Eric Young should be given attribution
* as the author of the parts of the library used.
* This can be in the form of a textual message at program startup or
* in documentation (online or textual) provided with the package.
- *
+ *
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
@@ -34,10 +34,10 @@
* Eric Young (eay@cryptsoft.com)"
* The word 'cryptographic' can be left out if the rouines from the library
* being used are not cryptographic related :-).
- * 4. If you include any Windows specific code (or a derivative thereof) from
+ * 4. If you include any Windows specific code (or a derivative thereof) from
* the apps directory (application code) you must include an acknowledgement:
* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
- *
+ *
* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
@@ -49,7 +49,7 @@
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
- *
+ *
* The licence and distribution terms for any publically available version or
* derivative of this code cannot be changed. i.e. this code cannot simply be
* copied and put under another distribution licence
@@ -61,20 +61,21 @@
#include <openssl/evp.h>
#ifndef CHARSET_EBCDIC
-#define conv_bin2ascii(a) (data_bin2ascii[(a)&0x3f])
-#define conv_ascii2bin(a) (data_ascii2bin[(a)&0x7f])
+# define conv_bin2ascii(a) (data_bin2ascii[(a)&0x3f])
+# define conv_ascii2bin(a) (data_ascii2bin[(a)&0x7f])
#else
-/* We assume that PEM encoded files are EBCDIC files
- * (i.e., printable text files). Convert them here while decoding.
- * When encoding, output is EBCDIC (text) format again.
- * (No need for conversion in the conv_bin2ascii macro, as the
- * underlying textstring data_bin2ascii[] is already EBCDIC)
+/*
+ * We assume that PEM encoded files are EBCDIC files (i.e., printable text
+ * files). Convert them here while decoding. When encoding, output is EBCDIC
+ * (text) format again. (No need for conversion in the conv_bin2ascii macro,
+ * as the underlying textstring data_bin2ascii[] is already EBCDIC)
*/
-#define conv_bin2ascii(a) (data_bin2ascii[(a)&0x3f])
-#define conv_ascii2bin(a) (data_ascii2bin[os_toascii[a]&0x7f])
+# define conv_bin2ascii(a) (data_bin2ascii[(a)&0x3f])
+# define conv_ascii2bin(a) (data_ascii2bin[os_toascii[a]&0x7f])
#endif
-/* 64 char lines
+/*-
+ * 64 char lines
* pad input with 0
* left over chars are set to =
* 1 byte => xx==
@@ -85,362 +86,367 @@
#define CHUNKS_PER_LINE (64/4)
#define CHAR_PER_LINE (64+1)
-static const unsigned char data_bin2ascii[65]="ABCDEFGHIJKLMNOPQRSTUVWXYZ\
+static const unsigned char data_bin2ascii[65] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ\
abcdefghijklmnopqrstuvwxyz0123456789+/";
-/* 0xF0 is a EOLN
+/*-
+ * 0xF0 is a EOLN
* 0xF1 is ignore but next needs to be 0xF0 (for \r\n processing).
* 0xF2 is EOF
* 0xE0 is ignore at start of line.
* 0xFF is error
*/
-#define B64_EOLN 0xF0
-#define B64_CR 0xF1
-#define B64_EOF 0xF2
-#define B64_WS 0xE0
-#define B64_ERROR 0xFF
-#define B64_NOT_BASE64(a) (((a)|0x13) == 0xF3)
-
-static const unsigned char data_ascii2bin[128]={
- 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
- 0xFF,0xE0,0xF0,0xFF,0xFF,0xF1,0xFF,0xFF,
- 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
- 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
- 0xE0,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
- 0xFF,0xFF,0xFF,0x3E,0xFF,0xF2,0xFF,0x3F,
- 0x34,0x35,0x36,0x37,0x38,0x39,0x3A,0x3B,
- 0x3C,0x3D,0xFF,0xFF,0xFF,0x00,0xFF,0xFF,
- 0xFF,0x00,0x01,0x02,0x03,0x04,0x05,0x06,
- 0x07,0x08,0x09,0x0A,0x0B,0x0C,0x0D,0x0E,
- 0x0F,0x10,0x11,0x12,0x13,0x14,0x15,0x16,
- 0x17,0x18,0x19,0xFF,0xFF,0xFF,0xFF,0xFF,
- 0xFF,0x1A,0x1B,0x1C,0x1D,0x1E,0x1F,0x20,
- 0x21,0x22,0x23,0x24,0x25,0x26,0x27,0x28,
- 0x29,0x2A,0x2B,0x2C,0x2D,0x2E,0x2F,0x30,
- 0x31,0x32,0x33,0xFF,0xFF,0xFF,0xFF,0xFF,
- };
+#define B64_EOLN 0xF0
+#define B64_CR 0xF1
+#define B64_EOF 0xF2
+#define B64_WS 0xE0
+#define B64_ERROR 0xFF
+#define B64_NOT_BASE64(a) (((a)|0x13) == 0xF3)
+
+static const unsigned char data_ascii2bin[128] = {
+ 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+ 0xFF, 0xE0, 0xF0, 0xFF, 0xFF, 0xF1, 0xFF, 0xFF,
+ 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+ 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+ 0xE0, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+ 0xFF, 0xFF, 0xFF, 0x3E, 0xFF, 0xF2, 0xFF, 0x3F,
+ 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3A, 0x3B,
+ 0x3C, 0x3D, 0xFF, 0xFF, 0xFF, 0x00, 0xFF, 0xFF,
+ 0xFF, 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06,
+ 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E,
+ 0x0F, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16,
+ 0x17, 0x18, 0x19, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+ 0xFF, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F, 0x20,
+ 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28,
+ 0x29, 0x2A, 0x2B, 0x2C, 0x2D, 0x2E, 0x2F, 0x30,
+ 0x31, 0x32, 0x33, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+};
void EVP_EncodeInit(EVP_ENCODE_CTX *ctx)
- {
- ctx->length=48;
- ctx->num=0;
- ctx->line_num=0;
- }
+{
+ ctx->length = 48;
+ ctx->num = 0;
+ ctx->line_num = 0;
+}
void EVP_EncodeUpdate(EVP_ENCODE_CTX *ctx, unsigned char *out, int *outl,
- const unsigned char *in, int inl)
- {
- int i,j;
- unsigned int total=0;
-
- *outl=0;
- if (inl == 0) return;
- OPENSSL_assert(ctx->length <= (int)sizeof(ctx->enc_data));
- if ((ctx->num+inl) < ctx->length)
- {
- memcpy(&(ctx->enc_data[ctx->num]),in,inl);
- ctx->num+=inl;
- return;
- }
- if (ctx->num != 0)
- {
- i=ctx->length-ctx->num;
- memcpy(&(ctx->enc_data[ctx->num]),in,i);
- in+=i;
- inl-=i;
- j=EVP_EncodeBlock(out,ctx->enc_data,ctx->length);
- ctx->num=0;
- out+=j;
- *(out++)='\n';
- *out='\0';
- total=j+1;
- }
- while (inl >= ctx->length)
- {
- j=EVP_EncodeBlock(out,in,ctx->length);
- in+=ctx->length;
- inl-=ctx->length;
- out+=j;
- *(out++)='\n';
- *out='\0';
- total+=j+1;
- }
- if (inl != 0)
- memcpy(&(ctx->enc_data[0]),in,inl);
- ctx->num=inl;
- *outl=total;
- }
+ const unsigned char *in, int inl)
+{
+ int i, j;
+ unsigned int total = 0;
+
+ *outl = 0;
+ if (inl == 0)
+ return;
+ OPENSSL_assert(ctx->length <= (int)sizeof(ctx->enc_data));
+ if ((ctx->num + inl) < ctx->length) {
+ memcpy(&(ctx->enc_data[ctx->num]), in, inl);
+ ctx->num += inl;
+ return;
+ }
+ if (ctx->num != 0) {
+ i = ctx->length - ctx->num;
+ memcpy(&(ctx->enc_data[ctx->num]), in, i);
+ in += i;
+ inl -= i;
+ j = EVP_EncodeBlock(out, ctx->enc_data, ctx->length);
+ ctx->num = 0;
+ out += j;
+ *(out++) = '\n';
+ *out = '\0';
+ total = j + 1;
+ }
+ while (inl >= ctx->length) {
+ j = EVP_EncodeBlock(out, in, ctx->length);
+ in += ctx->length;
+ inl -= ctx->length;
+ out += j;
+ *(out++) = '\n';
+ *out = '\0';
+ total += j + 1;
+ }
+ if (inl != 0)
+ memcpy(&(ctx->enc_data[0]), in, inl);
+ ctx->num = inl;
+ *outl = total;
+}
void EVP_EncodeFinal(EVP_ENCODE_CTX *ctx, unsigned char *out, int *outl)
- {
- unsigned int ret=0;
-
- if (ctx->num != 0)
- {
- ret=EVP_EncodeBlock(out,ctx->enc_data,ctx->num);
- out[ret++]='\n';
- out[ret]='\0';
- ctx->num=0;
- }
- *outl=ret;
- }
+{
+ unsigned int ret = 0;
+
+ if (ctx->num != 0) {
+ ret = EVP_EncodeBlock(out, ctx->enc_data, ctx->num);
+ out[ret++] = '\n';
+ out[ret] = '\0';
+ ctx->num = 0;
+ }
+ *outl = ret;
+}
int EVP_EncodeBlock(unsigned char *t, const unsigned char *f, int dlen)
- {
- int i,ret=0;
- unsigned long l;
-
- for (i=dlen; i > 0; i-=3)
- {
- if (i >= 3)
- {
- l= (((unsigned long)f[0])<<16L)|
- (((unsigned long)f[1])<< 8L)|f[2];
- *(t++)=conv_bin2ascii(l>>18L);
- *(t++)=conv_bin2ascii(l>>12L);
- *(t++)=conv_bin2ascii(l>> 6L);
- *(t++)=conv_bin2ascii(l );
- }
- else
- {
- l=((unsigned long)f[0])<<16L;
- if (i == 2) l|=((unsigned long)f[1]<<8L);
-
- *(t++)=conv_bin2ascii(l>>18L);
- *(t++)=conv_bin2ascii(l>>12L);
- *(t++)=(i == 1)?'=':conv_bin2ascii(l>> 6L);
- *(t++)='=';
- }
- ret+=4;
- f+=3;
- }
-
- *t='\0';
- return(ret);
- }
+{
+ int i, ret = 0;
+ unsigned long l;
+
+ for (i = dlen; i > 0; i -= 3) {
+ if (i >= 3) {
+ l = (((unsigned long)f[0]) << 16L) |
+ (((unsigned long)f[1]) << 8L) | f[2];
+ *(t++) = conv_bin2ascii(l >> 18L);
+ *(t++) = conv_bin2ascii(l >> 12L);
+ *(t++) = conv_bin2ascii(l >> 6L);
+ *(t++) = conv_bin2ascii(l);
+ } else {
+ l = ((unsigned long)f[0]) << 16L;
+ if (i == 2)
+ l |= ((unsigned long)f[1] << 8L);
+
+ *(t++) = conv_bin2ascii(l >> 18L);
+ *(t++) = conv_bin2ascii(l >> 12L);
+ *(t++) = (i == 1) ? '=' : conv_bin2ascii(l >> 6L);
+ *(t++) = '=';
+ }
+ ret += 4;
+ f += 3;
+ }
+
+ *t = '\0';
+ return (ret);
+}
void EVP_DecodeInit(EVP_ENCODE_CTX *ctx)
- {
- ctx->length=30;
- ctx->num=0;
- ctx->line_num=0;
- ctx->expect_nl=0;
- }
-
-/* -1 for error
+{
+ ctx->length = 30;
+ ctx->num = 0;
+ ctx->line_num = 0;
+ ctx->expect_nl = 0;
+}
+
+/*-
+ * -1 for error
* 0 for last line
* 1 for full line
*/
int EVP_DecodeUpdate(EVP_ENCODE_CTX *ctx, unsigned char *out, int *outl,
- const unsigned char *in, int inl)
- {
- int seof= -1,eof=0,rv= -1,ret=0,i,v,tmp,n,ln,exp_nl;
- unsigned char *d;
-
- n=ctx->num;
- d=ctx->enc_data;
- ln=ctx->line_num;
- exp_nl=ctx->expect_nl;
-
- /* last line of input. */
- if ((inl == 0) || ((n == 0) && (conv_ascii2bin(in[0]) == B64_EOF)))
- { rv=0; goto end; }
-
- /* We parse the input data */
- for (i=0; i<inl; i++)
- {
- /* If the current line is > 80 characters, scream alot */
- if (ln >= 80) { rv= -1; goto end; }
-
- /* Get char and put it into the buffer */
- tmp= *(in++);
- v=conv_ascii2bin(tmp);
- /* only save the good data :-) */
- if (!B64_NOT_BASE64(v))
- {
- OPENSSL_assert(n < (int)sizeof(ctx->enc_data));
- d[n++]=tmp;
- ln++;
- }
- else if (v == B64_ERROR)
- {
- rv= -1;
- goto end;
- }
-
- /* have we seen a '=' which is 'definitly' the last
- * input line. seof will point to the character that
- * holds it. and eof will hold how many characters to
- * chop off. */
- if (tmp == '=')
- {
- if (seof == -1) seof=n;
- eof++;
- }
-
- if (v == B64_CR)
- {
- ln = 0;
- if (exp_nl)
- continue;
- }
-
- /* eoln */
- if (v == B64_EOLN)
- {
- ln=0;
- if (exp_nl)
- {
- exp_nl=0;
- continue;
- }
- }
- exp_nl=0;
-
- /* If we are at the end of input and it looks like a
- * line, process it. */
- if (((i+1) == inl) && (((n&3) == 0) || eof))
- {
- v=B64_EOF;
- /* In case things were given us in really small
- records (so two '=' were given in separate
- updates), eof may contain the incorrect number
- of ending bytes to skip, so let's redo the count */
- eof = 0;
- if (d[n-1] == '=') eof++;
- if (d[n-2] == '=') eof++;
- /* There will never be more than two '=' */
- }
-
- if ((v == B64_EOF && (n&3) == 0) || (n >= 64))
- {
- /* This is needed to work correctly on 64 byte input
- * lines. We process the line and then need to
- * accept the '\n' */
- if ((v != B64_EOF) && (n >= 64)) exp_nl=1;
- if (n > 0)
- {
- v=EVP_DecodeBlock(out,d,n);
- n=0;
- if (v < 0) { rv=0; goto end; }
- if (eof > v) { rv=-1; goto end; }
- ret+=(v-eof);
- }
- else
- {
- eof=1;
- v=0;
- }
-
- /* This is the case where we have had a short
- * but valid input line */
- if ((v < ctx->length) && eof)
- {
- rv=0;
- goto end;
- }
- else
- ctx->length=v;
-
- if (seof >= 0) { rv=0; goto end; }
- out+=v;
- }
- }
- rv=1;
-end:
- *outl=ret;
- ctx->num=n;
- ctx->line_num=ln;
- ctx->expect_nl=exp_nl;
- return(rv);
- }
+ const unsigned char *in, int inl)
+{
+ int seof = -1, eof = 0, rv = -1, ret = 0, i, v, tmp, n, ln, exp_nl;
+ unsigned char *d;
+
+ n = ctx->num;
+ d = ctx->enc_data;
+ ln = ctx->line_num;
+ exp_nl = ctx->expect_nl;
+
+ /* last line of input. */
+ if ((inl == 0) || ((n == 0) && (conv_ascii2bin(in[0]) == B64_EOF))) {
+ rv = 0;
+ goto end;
+ }
+
+ /* We parse the input data */
+ for (i = 0; i < inl; i++) {
+ /* If the current line is > 80 characters, scream alot */
+ if (ln >= 80) {
+ rv = -1;
+ goto end;
+ }
+
+ /* Get char and put it into the buffer */
+ tmp = *(in++);
+ v = conv_ascii2bin(tmp);
+ /* only save the good data :-) */
+ if (!B64_NOT_BASE64(v)) {
+ OPENSSL_assert(n < (int)sizeof(ctx->enc_data));
+ d[n++] = tmp;
+ ln++;
+ } else if (v == B64_ERROR) {
+ rv = -1;
+ goto end;
+ }
+
+ /*
+ * have we seen a '=' which is 'definitly' the last input line. seof
+ * will point to the character that holds it. and eof will hold how
+ * many characters to chop off.
+ */
+ if (tmp == '=') {
+ if (seof == -1)
+ seof = n;
+ eof++;
+ }
+
+ if (v == B64_CR) {
+ ln = 0;
+ if (exp_nl)
+ continue;
+ }
+
+ /* eoln */
+ if (v == B64_EOLN) {
+ ln = 0;
+ if (exp_nl) {
+ exp_nl = 0;
+ continue;
+ }
+ }
+ exp_nl = 0;
+
+ /*
+ * If we are at the end of input and it looks like a line, process
+ * it.
+ */
+ if (((i + 1) == inl) && (((n & 3) == 0) || eof)) {
+ v = B64_EOF;
+ /*
+ * In case things were given us in really small records (so two
+ * '=' were given in separate updates), eof may contain the
+ * incorrect number of ending bytes to skip, so let's redo the
+ * count
+ */
+ eof = 0;
+ if (d[n - 1] == '=')
+ eof++;
+ if (d[n - 2] == '=')
+ eof++;
+ /* There will never be more than two '=' */
+ }
+
+ if ((v == B64_EOF && (n & 3) == 0) || (n >= 64)) {
+ /*
+ * This is needed to work correctly on 64 byte input lines. We
+ * process the line and then need to accept the '\n'
+ */
+ if ((v != B64_EOF) && (n >= 64))
+ exp_nl = 1;
+ if (n > 0) {
+ v = EVP_DecodeBlock(out, d, n);
+ n = 0;
+ if (v < 0) {
+ rv = 0;
+ goto end;
+ }
+ if (eof > v) {
+ rv = -1;
+ goto end;
+ }
+ ret += (v - eof);
+ } else {
+ eof = 1;
+ v = 0;
+ }
+
+ /*
+ * This is the case where we have had a short but valid input
+ * line
+ */
+ if ((v < ctx->length) && eof) {
+ rv = 0;
+ goto end;
+ } else
+ ctx->length = v;
+
+ if (seof >= 0) {
+ rv = 0;
+ goto end;
+ }
+ out += v;
+ }
+ }
+ rv = 1;
+ end:
+ *outl = ret;
+ ctx->num = n;
+ ctx->line_num = ln;
+ ctx->expect_nl = exp_nl;
+ return (rv);
+}
int EVP_DecodeBlock(unsigned char *t, const unsigned char *f, int n)
- {
- int i,ret=0,a,b,c,d;
- unsigned long l;
-
- /* trim white space from the start of the line. */
- while ((conv_ascii2bin(*f) == B64_WS) && (n > 0))
- {
- f++;
- n--;
- }
-
- /* strip off stuff at the end of the line
- * ascii2bin values B64_WS, B64_EOLN, B64_EOLN and B64_EOF */
- while ((n > 3) && (B64_NOT_BASE64(conv_ascii2bin(f[n-1]))))
- n--;
-
- if (n%4 != 0) return(-1);
-
- for (i=0; i<n; i+=4)
- {
- a=conv_ascii2bin(*(f++));
- b=conv_ascii2bin(*(f++));
- c=conv_ascii2bin(*(f++));
- d=conv_ascii2bin(*(f++));
- if ( (a & 0x80) || (b & 0x80) ||
- (c & 0x80) || (d & 0x80))
- return(-1);
- l=( (((unsigned long)a)<<18L)|
- (((unsigned long)b)<<12L)|
- (((unsigned long)c)<< 6L)|
- (((unsigned long)d) ));
- *(t++)=(unsigned char)(l>>16L)&0xff;
- *(t++)=(unsigned char)(l>> 8L)&0xff;
- *(t++)=(unsigned char)(l )&0xff;
- ret+=3;
- }
- return(ret);
- }
+{
+ int i, ret = 0, a, b, c, d;
+ unsigned long l;
+
+ /* trim white space from the start of the line. */
+ while ((conv_ascii2bin(*f) == B64_WS) && (n > 0)) {
+ f++;
+ n--;
+ }
+
+ /*
+ * strip off stuff at the end of the line ascii2bin values B64_WS,
+ * B64_EOLN, B64_EOLN and B64_EOF
+ */
+ while ((n > 3) && (B64_NOT_BASE64(conv_ascii2bin(f[n - 1]))))
+ n--;
+
+ if (n % 4 != 0)
+ return (-1);
+
+ for (i = 0; i < n; i += 4) {
+ a = conv_ascii2bin(*(f++));
+ b = conv_ascii2bin(*(f++));
+ c = conv_ascii2bin(*(f++));
+ d = conv_ascii2bin(*(f++));
+ if ((a & 0x80) || (b & 0x80) || (c & 0x80) || (d & 0x80))
+ return (-1);
+ l = ((((unsigned long)a) << 18L) |
+ (((unsigned long)b) << 12L) |
+ (((unsigned long)c) << 6L) | (((unsigned long)d)));
+ *(t++) = (unsigned char)(l >> 16L) & 0xff;
+ *(t++) = (unsigned char)(l >> 8L) & 0xff;
+ *(t++) = (unsigned char)(l) & 0xff;
+ ret += 3;
+ }
+ return (ret);
+}
int EVP_DecodeFinal(EVP_ENCODE_CTX *ctx, unsigned char *out, int *outl)
- {
- int i;
-
- *outl=0;
- if (ctx->num != 0)
- {
- i=EVP_DecodeBlock(out,ctx->enc_data,ctx->num);
- if (i < 0) return(-1);
- ctx->num=0;
- *outl=i;
- return(1);
- }
- else
- return(1);
- }
+{
+ int i;
+
+ *outl = 0;
+ if (ctx->num != 0) {
+ i = EVP_DecodeBlock(out, ctx->enc_data, ctx->num);
+ if (i < 0)
+ return (-1);
+ ctx->num = 0;
+ *outl = i;
+ return (1);
+ } else
+ return (1);
+}
#ifdef undef
int EVP_DecodeValid(unsigned char *buf, int len)
- {
- int i,num=0,bad=0;
-
- if (len == 0) return(-1);
- while (conv_ascii2bin(*buf) == B64_WS)
- {
- buf++;
- len--;
- if (len == 0) return(-1);
- }
-
- for (i=len; i >= 4; i-=4)
- {
- if ( (conv_ascii2bin(buf[0]) >= 0x40) ||
- (conv_ascii2bin(buf[1]) >= 0x40) ||
- (conv_ascii2bin(buf[2]) >= 0x40) ||
- (conv_ascii2bin(buf[3]) >= 0x40))
- return(-1);
- buf+=4;
- num+=1+(buf[2] != '=')+(buf[3] != '=');
- }
- if ((i == 1) && (conv_ascii2bin(buf[0]) == B64_EOLN))
- return(num);
- if ((i == 2) && (conv_ascii2bin(buf[0]) == B64_EOLN) &&
- (conv_ascii2bin(buf[0]) == B64_EOLN))
- return(num);
- return(1);
- }
+{
+ int i, num = 0, bad = 0;
+
+ if (len == 0)
+ return (-1);
+ while (conv_ascii2bin(*buf) == B64_WS) {
+ buf++;
+ len--;
+ if (len == 0)
+ return (-1);
+ }
+
+ for (i = len; i >= 4; i -= 4) {
+ if ((conv_ascii2bin(buf[0]) >= 0x40) ||
+ (conv_ascii2bin(buf[1]) >= 0x40) ||
+ (conv_ascii2bin(buf[2]) >= 0x40) ||
+ (conv_ascii2bin(buf[3]) >= 0x40))
+ return (-1);
+ buf += 4;
+ num += 1 + (buf[2] != '=') + (buf[3] != '=');
+ }
+ if ((i == 1) && (conv_ascii2bin(buf[0]) == B64_EOLN))
+ return (num);
+ if ((i == 2) && (conv_ascii2bin(buf[0]) == B64_EOLN) &&
+ (conv_ascii2bin(buf[0]) == B64_EOLN))
+ return (num);
+ return (1);
+}
#endif