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authorJeffrey Stedfast <fejj@ximian.com>2002-04-11 03:59:13 +0800
committerJeffrey Stedfast <fejj@src.gnome.org>2002-04-11 03:59:13 +0800
commit5a08bd3e44b69675097741e6aa34d9009a43b6af (patch)
treeb421fededbd3709f53b97a6ab32e9a472aafe509 /camel
parent09a4db1fde85e39bcd0e288a040ddab2e0f9e4a8 (diff)
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Fixed a bug that would miscalculate how much data to copy into the
2002-04-10 Jeffrey Stedfast <fejj@ximian.com> * camel-mime-part-utils.c (convert_buffer): Fixed a bug that would miscalculate how much data to copy into the GByteArray (negative value) thus causing a segfault. Also optimized it while I was at it. svn path=/trunk/; revision=16428
Diffstat (limited to 'camel')
-rw-r--r--camel/ChangeLog7
-rw-r--r--camel/camel-mime-part-utils.c107
2 files changed, 68 insertions, 46 deletions
diff --git a/camel/ChangeLog b/camel/ChangeLog
index 7d334da54a..de92871e4d 100644
--- a/camel/ChangeLog
+++ b/camel/ChangeLog
@@ -1,3 +1,10 @@
+2002-04-10 Jeffrey Stedfast <fejj@ximian.com>
+
+ * camel-mime-part-utils.c (convert_buffer): Fixed a bug that would
+ miscalculate how much data to copy into the GByteArray (negative
+ value) thus causing a segfault. Also optimized it while I was at
+ it.
+
2002-04-09 Jeffrey Stedfast <fejj@ximian.com>
* camel-store.c (camel_store_init): Make the folder_lock
diff --git a/camel/camel-mime-part-utils.c b/camel/camel-mime-part-utils.c
index 024eec091e..19f58bf1d2 100644
--- a/camel/camel-mime-part-utils.c
+++ b/camel/camel-mime-part-utils.c
@@ -102,59 +102,74 @@ check_html_charset(char *buffer, int length)
static GByteArray *
convert_buffer (GByteArray *in, const char *to, const char *from)
{
- iconv_t ic;
- size_t inlen, outlen;
- char *inbuf, *outbuf;
- char *buffer;
+ size_t inleft, outleft, outlen, converted = 0;
GByteArray *out = NULL;
- int i = 2;
-
+ const char *inbuf;
+ char *outbuf;
+ iconv_t cd;
+
d(printf("converting buffer from %s to %s: '%.*s'\n", from, to, (int)in->len, in->data));
-
- ic = e_iconv_open(to, from);
- if (ic == (iconv_t) -1) {
- g_warning("Cannot convert from '%s' to '%s': %s", from, to, strerror(errno));
+
+ cd = e_iconv_open(to, from);
+ if (cd == (iconv_t) -1) {
+ g_warning ("Cannot convert from '%s' to '%s': %s", from, to, g_strerror (errno));
return NULL;
}
-
+
+ outlen = in->len * 2 + 16;
+ out = g_byte_array_new ();
+ g_byte_array_set_size (out, outlen);
+
+ inbuf = in->data;
+ inleft = in->len;
+
do {
- /* make plenty of space? */
- outlen = in->len * i + 16;
- buffer = g_malloc(outlen);
-
- inbuf = in->data;
- inlen = in->len;
- outbuf = buffer;
-
- if (e_iconv(ic, (const char **)&inbuf, &inlen, &outbuf, &outlen) == (size_t) -1) {
- g_free(buffer);
- g_warning("conversion failed: %s", strerror(errno));
- /* we didn't have enough space */
- if (errno == E2BIG && i<6) {
- i++;
- continue;
- }
- break;
+ outbuf = out->data + converted;
+ outleft = outlen - converted;
+
+ converted = e_iconv (cd, &inbuf, &inleft, &outbuf, &outleft);
+ if (converted == (size_t) -1) {
+ if (errno != E2BIG && errno != EINVAL)
+ goto fail;
}
-
- out = g_byte_array_new();
- g_byte_array_append(out, buffer, (in->len*i+16) - outlen);
-
- /* close off the conversion */
- outbuf = buffer;
- outlen = in->len * i + 16;
- if (e_iconv(ic, NULL, 0, &outbuf, &outlen) != (size_t) -1)
- g_byte_array_append(out, buffer, (in->len*i+16) - outlen);
- g_free(buffer);
-
- d(printf("converted: '%.*s'\n", (int)out->len, out->data));
-
- break;
- } while (1);
-
- e_iconv_close(ic);
-
+
+ /*
+ * E2BIG There is not sufficient room at *outbuf.
+ *
+ * We just need to grow our outbuffer and try again.
+ */
+
+ converted = outlen - outleft;
+ if (errno == E2BIG) {
+ outlen += inleft * 2 + 16;
+ out = g_byte_array_set_size (out, outlen);
+ outbuf = out->data + converted;
+ }
+
+ } while (errno == E2BIG && inleft > 0);
+
+ /*
+ * EINVAL An incomplete multibyte sequence has been encoun­
+ * tered in the input.
+ *
+ * We'll just have to ignore it...
+ */
+
+ /* flush the iconv conversion */
+ e_iconv (cd, NULL, NULL, &outbuf, &outleft);
+
+ e_iconv_close (cd);
+
return out;
+
+ fail:
+ g_warning ("Cannot convert from '%s' to '%s': %s", from, to, g_strerror (errno));
+
+ g_byte_array_free (out, TRUE);
+
+ e_iconv_close (cd);
+
+ return NULL;
}
/* We don't really use the charset argument except for debugging... */