don't read the char if we reached the length of the output buffer. Hours

2000-02-22  bertrand  <Bertrand.Guiheneuf@aful.org>

	* camel-stream-b64.c (read_decode__static):
	don't read the char if we reached the length
	of the output buffer. Hours lost on this
	%$!@# bug : 3.5

svn path=/trunk/; revision=1903

1 files changed, 42 insertions, 37 deletions

diff --git a/camel/camel-stream-b64.c b/camel/camel-stream-b64.c
index f2155a2c95..3b97b11aad 100644
--- a/camel/camel-stream-b64.c
+++ b/camel/camel-stream-b64.c
@@ -32,38 +32,38 @@
 static CamelStreamClass *parent_class = NULL;
 
 static guchar char_to_six_bits [256] = {
-	66, 66, 66, 66, 66, 66, 66, 66, /*   0 .. 7   */
-	66, 66, 66, 66, 66, 66, 66, 66, /*   8 .. 15  */
-	66, 66, 66, 66, 66, 66, 66, 66, /*  16 .. 23  */
-	66, 66, 66, 66, 66, 66, 66, 66, /*  24 .. 31  */
-	66, 66, 66, 66, 66, 66, 66, 66, /*  32 .. 39  */
-	66, 66, 66, 62, 66, 66, 66, 63, /*  40 .. 47  */
-	52, 53, 54, 55, 56, 57, 58, 59, /*  48 .. 55  */
-	60, 61, 66, 66, 66, 65, 66, 66, /*  56 .. 63  */
-	66,  0,  1,  2,  3,  4,  5,  6, /*  64 .. 71  */
-	 7,  8,  9, 10, 11, 12, 13, 14, /*  72 .. 79  */
-	15, 16, 17, 18, 19, 20, 21, 22, /*  80 .. 87  */
-	23, 24, 25, 66, 66, 66, 66, 66, /*  88 .. 95  */
-	66, 26, 27, 28, 29, 30, 31, 32, /*  96 .. 103 */
-	33, 34, 35, 36, 37, 38, 39, 40, /* 104 .. 111 */
-	41, 42, 43, 44, 45, 46, 47, 48, /* 112 .. 119 */
-	49, 50, 51, 66, 66, 66, 66, 66, /* 120 .. 127 */
-	66, 66, 66, 66, 66, 66, 66, 66, /* 128 .. 135 */
-	66, 66, 66, 66, 66, 66, 66, 66, /* 136 .. 143 */
-	66, 66, 66, 66, 66, 66, 66, 66, /* 144 .. 151 */
-	66, 66, 66, 66, 66, 66, 66, 66, /* 152 .. 159 */
-	66, 66, 66, 66, 66, 66, 66, 66, /* 160 .. 167 */
-	66, 66, 66, 66, 66, 66, 66, 66, /* 168 .. 175 */
-	66, 66, 66, 66, 66, 66, 66, 66, /* 176 .. 183 */
-	66, 66, 66, 66, 66, 66, 66, 66, /* 184 .. 191 */
-	66, 66, 66, 66, 66, 66, 66, 66, /* 192 .. 199 */
-	66, 66, 66, 66, 66, 66, 66, 66, /* 200 .. 207 */
-	66, 66, 66, 66, 66, 66, 66, 66, /* 208 .. 215 */
-	66, 66, 66, 66, 66, 66, 66, 66, /* 216 .. 223 */
-	66, 66, 66, 66, 66, 66, 66, 66, /* 224 .. 231 */
-	66, 66, 66, 66, 66, 66, 66, 66, /* 232 .. 239 */
-	66, 66, 66, 66, 66, 66, 66, 66, /* 240 .. 247 */
-	66, 66, 66, 66, 66, 66, 66, 66  /* 248 .. 255 */
+	128, 128, 128, 128, 128, 128, 128, 128, /*   0 .. 7   */
+	128, 128, 128, 128, 128, 128, 128, 128, /*   8 .. 15  */
+	128, 128, 128, 128, 128, 128, 128, 128, /*  16 .. 23  */
+	128, 128, 128, 128, 128, 128, 128, 128, /*  24 .. 31  */
+	128, 128, 128, 128, 128, 128, 128, 128, /*  32 .. 39  */
+	128, 128, 128,  62, 128, 128, 128,  63, /*  40 .. 47  */
+	 52,  53,  54,  55,  56,  57,  58,  59, /*  48 .. 55  */
+	 60,  61, 128, 128, 128,  64, 128, 128, /*  56 .. 63  */
+	128,   0,   1,   2,   3,   4,   5,   6, /*  64 .. 71  */
+	  7,   8,   9,  10,  11,  12,  13,  14, /*  72 .. 79  */
+	 15,  16,  17,  18,  19,  20,  21,  22, /*  80 .. 87  */
+	 23,  24,  25, 128, 128, 128, 128, 128, /*  88 .. 95  */
+	128,  26,  27,  28,  29,  30,  31,  32, /*  96 .. 103 */
+	 33,  34,  35,  36,  37,  38,  39,  40, /* 104 .. 111 */
+	 41,  42,  43,  44,  45,  46,  47,  48, /* 112 .. 119 */
+	 49,  50,  51, 128, 128, 128, 128, 128, /* 120 .. 127 */
+	128, 128, 128, 128, 128, 128, 128, 128, /* 128 .. 135 */
+	128, 128, 128, 128, 128, 128, 128, 128, /* 136 .. 143 */
+	128, 128, 128, 128, 128, 128, 128, 128, /* 144 .. 151 */
+	128, 128, 128, 128, 128, 128, 128, 128, /* 152 .. 159 */
+	128, 128, 128, 128, 128, 128, 128, 128, /* 160 .. 167 */
+	128, 128, 128, 128, 128, 128, 128, 128, /* 168 .. 175 */
+	128, 128, 128, 128, 128, 128, 128, 128, /* 176 .. 183 */
+	128, 128, 128, 128, 128, 128, 128, 128, /* 184 .. 191 */
+	128, 128, 128, 128, 128, 128, 128, 128, /* 192 .. 199 */
+	128, 128, 128, 128, 128, 128, 128, 128, /* 200 .. 207 */
+	128, 128, 128, 128, 128, 128, 128, 128, /* 208 .. 215 */
+	128, 128, 128, 128, 128, 128, 128, 128, /* 216 .. 223 */
+	128, 128, 128, 128, 128, 128, 128, 128, /* 224 .. 231 */
+	128, 128, 128, 128, 128, 128, 128, 128, /* 232 .. 239 */
+	128, 128, 128, 128, 128, 128, 128, 128, /* 240 .. 247 */
+	128, 128, 128, 128, 128, 128, 128, 128  /* 248 .. 255 */
 };
 
 
@@ -253,17 +253,21 @@ static gint read_decode__static (CamelStream *stream,
 		
 		/* if we encounter an '=' we can assume the end of the stream 
 		   has been found */
-		if (six_bits_value == 65) {
+		if (six_bits_value == 64) {
 			stream_b64->eos = TRUE;
+			status->keep = 0;
+			
 			break;
 		}
 		
 		/* test if we must ignore the character */
-		if (six_bits_value != 66) {
-			
+		if (six_bits_value != 128) {
+			six_bits_value = six_bits_value & 0x3f;
+
 			switch (status->state % 4){
 			case 0:
 				status->keep =  six_bits_value << 2;
+				
 				break;
 			case 1:
 				buffer [j++] = status->keep | (six_bits_value >> 4);
@@ -275,14 +279,15 @@ static gint read_decode__static (CamelStream *stream,
 				break;
 			case 3:
 				buffer [j++] = status->keep | six_bits_value;
+				status->keep = 0;
 				break;
 			}
 			
 			status->state = (status->state + 1) % 4;
+			
 		}
 		
-		
-		nb_read_in_input = camel_stream_read (input_stream, &c, 1);
+		if (j<n) nb_read_in_input = camel_stream_read (input_stream, &c, 1);
 		
 	}