bump version in README

[pam_pcsc_cr.git] / base64.c

diff --git a/base64.c b/base64.c
index d90a927cc42a4a399c028d7d14706e058db21f78..8f16cdc0306b0dd1125ab9ca40459f6e779ee95b 100644 (file)
--- a/base64.c
+++ b/base64.c
@@ -66,10 +66,10 @@ static char base64_encode_value(char value_in)
        return encoding[(int)value_in];
 }
 
-static int base64_encode_block(const char* plaintext_in, int length_in, char* code_out, base64_encodestate* state_in)
+static int base64_encode_block(const unsigned char* plaintext_in, int length_in, char* code_out, base64_encodestate* state_in)
 {
-       const char* plainchar = plaintext_in;
-       const char* const plaintextend = plaintext_in + length_in;
+       const unsigned char* plainchar = plaintext_in;
+       const unsigned char* const plaintextend = plaintext_in + length_in;
        char* codechar = code_out;
        char result;
        char fragment;
@@ -167,10 +167,10 @@ static void base64_init_decodestate(base64_decodestate* state_in)
        state_in->plainchar = 0;
 }
 
-static int base64_decode_block(const char* code_in, const int length_in, char* plaintext_out, base64_decodestate* state_in)
+static int base64_decode_block(const char* code_in, const int length_in, unsigned char* plaintext_out, base64_decodestate* state_in)
 {
        const char* codechar = code_in;
-       char* plainchar = plaintext_out;
+       unsigned char* plainchar = plaintext_out;
        char fragment;
        
        *plainchar = state_in->plainchar;
@@ -231,14 +231,14 @@ static int base64_decode_block(const char* code_in, const int length_in, char* p
        return plainchar - plaintext_out;
 }
 
-int b64_encode(const char *src, const int ssize,
+int b64_encode(const unsigned char *src, const int ssize,
                char *const b64, int *const bsize)
 {
        base64_encodestate s;
        int cnt1, cnt2;
        char *c = b64;
 
-       /* FIXME check size */
+       if (*bsize < ((ssize-1)/3+1)*4+1) return 1;
        base64_init_encodestate(&s);
        cnt1 = base64_encode_block(src, ssize, c, &s);
        c += cnt1;
@@ -249,14 +249,15 @@ int b64_encode(const char *src, const int ssize,
        return 0;
 }
 
-int b64_decode(const char *b64, char *const dst, int *const dsize)
+int b64_decode(const char *b64, unsigned char *const dst, int *const dsize)
 {
        base64_decodestate s;
        int cnt;
+       int bsize = strlen(b64);
 
-       /* FIXME check size */
+       if (*dsize < (bsize*3/4)) return 1;
        base64_init_decodestate(&s);
-       cnt = base64_decode_block(b64, strlen(b64), dst, &s);
+       cnt = base64_decode_block(b64, bsize, dst, &s);
        *dsize = cnt;
        return 0;
 }