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Lines 54-61
static const char base64_alphabet[] =
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* |
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* |
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* The output buffer must be large enough to fit all the data that will |
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* The output buffer must be large enough to fit all the data that will |
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* be written to it. Due to the way base64 encodes you will need |
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* be written to it. Due to the way base64 encodes you will need |
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* at least: @len * 4 / 3 + 6 bytes. If you enable line-breaking you will |
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* at least: (@len / 3 + 1) * 4 + 4 bytes (+ 4 may be needed in case of |
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* need at least: @len * 4 / 3 + @len * 4 / (3 * 72) + 7 bytes. |
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* non-zero state). If you enable line-breaking you will need at least: |
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* ((@len / 3 + 1) * 4 + 4) / 72 + 1 bytes of extra space. |
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* |
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* |
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* @break_lines is typically used when putting base64-encoded data in emails. |
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* @break_lines is typically used when putting base64-encoded data in emails. |
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* It breaks the lines at 72 columns instead of putting all of the text on |
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* It breaks the lines at 72 columns instead of putting all of the text on |
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Lines 233-240
g_base64_encode (const guchar *data,
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g_return_val_if_fail (data != NULL, NULL); |
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g_return_val_if_fail (data != NULL, NULL); |
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g_return_val_if_fail (len > 0, NULL); |
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g_return_val_if_fail (len > 0, NULL); |
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/* We can use a smaller limit here, since we know the saved state is 0 */ |
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/* We can use a smaller limit here, since we know the saved state is 0, |
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out = g_malloc (len * 4 / 3 + 4); |
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+1 is needed for trailing \0, also check for unlikely integer overflow */ |
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if (len >= ((G_MAXSIZE - 1) / 4 - 1) * 3) |
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g_error("%s: input too large for Base64 encoding (%"G_GSIZE_FORMAT" chars)", |
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G_STRLOC, len); |
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out = g_malloc ((len / 3 + 1) * 4 + 1); |
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outlen = g_base64_encode_step (data, len, FALSE, out, &state, &save); |
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outlen = g_base64_encode_step (data, len, FALSE, out, &state, &save); |
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outlen += g_base64_encode_close (FALSE, out + outlen, &state, &save); |
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outlen += g_base64_encode_close (FALSE, out + outlen, &state, &save); |
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out[outlen] = '\0'; |
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out[outlen] = '\0'; |
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Lines 275-281
static const unsigned char mime_base64_r
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* |
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* |
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* The output buffer must be large enough to fit all the data that will |
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* The output buffer must be large enough to fit all the data that will |
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* be written to it. Since base64 encodes 3 bytes in 4 chars you need |
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* be written to it. Since base64 encodes 3 bytes in 4 chars you need |
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* at least: @len * 3 / 4 bytes. |
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* at least: (@len / 4) * 3 + 3 bytes (+ 3 may be needed in case of non-zero |
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* state). |
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* |
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* |
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* Return value: The number of bytes of output that was written |
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* Return value: The number of bytes of output that was written |
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* |
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* |
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Lines 358-364
g_base64_decode (const gchar *text,
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gsize *out_len) |
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gsize *out_len) |
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{ |
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{ |
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guchar *ret; |
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guchar *ret; |
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gint input_length, state = 0; |
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gsize input_length; |
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gint state = 0; |
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guint save = 0; |
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guint save = 0; |
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g_return_val_if_fail (text != NULL, NULL); |
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g_return_val_if_fail (text != NULL, NULL); |
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Lines 368-374
g_base64_decode (const gchar *text,
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g_return_val_if_fail (input_length > 1, NULL); |
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g_return_val_if_fail (input_length > 1, NULL); |
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ret = g_malloc0 (input_length * 3 / 4); |
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/* We can use a smaller limit here, since we know the saved state is 0, |
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+1 used to avoid calling g_malloc0(0), and hence retruning NULL */ |
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ret = g_malloc0 ((input_length / 4) * 3 + 1); |
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*out_len = g_base64_decode_step (text, input_length, ret, &state, &save); |
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*out_len = g_base64_decode_step (text, input_length, ret, &state, &save); |
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