Mac OS X x86 assembler support.

[openssl.git] / crypto / evp / encode.c

diff --git a/crypto/evp/encode.c b/crypto/evp/encode.c
index 14a4cb11f6c77bbee4e948dcbe83820091046d84..b42c74724936c6a9dc53e557cb96dd0ba6118e68 100644 (file)
--- a/crypto/evp/encode.c
+++ b/crypto/evp/encode.c
@@ -85,7 +85,7 @@
 #define CHUNKS_PER_LINE (64/4)
 #define CHAR_PER_LINE   (64+1)
 
-static unsigned char data_bin2ascii[65]="ABCDEFGHIJKLMNOPQRSTUVWXYZ\
+static const unsigned char data_bin2ascii[65]="ABCDEFGHIJKLMNOPQRSTUVWXYZ\
 abcdefghijklmnopqrstuvwxyz0123456789+/";
 
 /* 0xF0 is a EOLN
@@ -102,7 +102,7 @@ abcdefghijklmnopqrstuvwxyz0123456789+/";
 #define B64_ERROR              0xFF
 #define B64_NOT_BASE64(a)      (((a)|0x13) == 0xF3)
 
-static unsigned char data_ascii2bin[128]={
+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,
@@ -129,13 +129,14 @@ void EVP_EncodeInit(EVP_ENCODE_CTX *ctx)
        }
 
 void EVP_EncodeUpdate(EVP_ENCODE_CTX *ctx, unsigned char *out, int *outl,
-            unsigned char *in, int inl)
+            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);
@@ -232,7 +233,7 @@ void EVP_DecodeInit(EVP_ENCODE_CTX *ctx)
  *  1 for full line
  */
 int EVP_DecodeUpdate(EVP_ENCODE_CTX *ctx, unsigned char *out, int *outl,
-            unsigned char *in, int inl)
+            const unsigned char *in, int inl)
        {
        int seof= -1,eof=0,rv= -1,ret=0,i,v,tmp,n,ln,tmp2,exp_nl;
        unsigned char *d;
@@ -258,6 +259,7 @@ int EVP_DecodeUpdate(EVP_ENCODE_CTX *ctx, unsigned char *out, int *outl,
                /* only save the good data :-) */
                if (!B64_NOT_BASE64(v))
                        {
+                       OPENSSL_assert(n < (int)sizeof(ctx->enc_data));
                        d[n++]=tmp;
                        ln++;
                        }
@@ -277,6 +279,13 @@ int EVP_DecodeUpdate(EVP_ENCODE_CTX *ctx, unsigned char *out, int *outl,
                        eof++;
                        }
 
+               if (v == B64_CR)
+                       {
+                       ln = 0;
+                       if (exp_nl)
+                               continue;
+                       }
+
                /* eoln */
                if (v == B64_EOLN)
                        {
@@ -292,9 +301,19 @@ int EVP_DecodeUpdate(EVP_ENCODE_CTX *ctx, unsigned char *out, int *outl,
                /* 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 >= 64))
+               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
@@ -304,8 +323,8 @@ int EVP_DecodeUpdate(EVP_ENCODE_CTX *ctx, unsigned char *out, int *outl,
                        if (n > 0)
                                {
                                v=EVP_DecodeBlock(out,d,n);
-                               if (v < 0) { rv=0; goto end; }
                                n=0;
+                               if (v < 0) { rv=0; goto end; }
                                ret+=(v-eof);
                                }
                        else