+
+#ifdef HAVE_ICONV
+/* Handle subjects with RFC2047 encoding, such as:
+ * =?koi8-r?B?78bP0s3Mxc7JxSDXz9rE1dvO2c3JINvB0sHNySDP?=
+ */
+void utf8ify_rfc822_string(char *buf) {
+ char *start, *end;
+ char newbuf[1024];
+ char charset[128];
+ char encoding[16];
+ char istr[1024];
+ iconv_t ic = (iconv_t)(-1) ;
+ char *ibuf; /* Buffer of characters to be converted */
+ char *obuf; /* Buffer for converted characters */
+ size_t ibuflen; /* Length of input buffer */
+ size_t obuflen; /* Length of output buffer */
+ char *isav; /* Saved pointer to input buffer */
+ char *osav; /* Saved pointer to output buffer */
+
+ while (start=strstr(buf, "=?"), end=strstr(buf, "?="),
+ ((start != NULL) && (end != NULL) && (end > start)) )
+ {
+ extract_token(charset, start, 1, '?', sizeof charset);
+ extract_token(encoding, start, 2, '?', sizeof encoding);
+ extract_token(istr, start, 3, '?', sizeof istr);
+
+ strcpy(start, "");
+ ++end;
+ ++end;
+
+ ibuf = malloc(1024);
+ isav = ibuf;
+ if (!strcasecmp(encoding, "B")) { /* base64 */
+ ibuflen = CtdlDecodeBase64(ibuf, istr, strlen(istr));
+ }
+ else if (!strcasecmp(encoding, "Q")) { /* quoted-printable */
+ ibuflen = CtdlDecodeQuotedPrintable(ibuf, istr, strlen(istr));
+ }
+ else {
+ strcpy(ibuf, istr); /* huh? */
+ ibuflen = strlen(istr);
+ }
+
+ ic = iconv_open("UTF-8", charset);
+ if (ic != (iconv_t)(-1) ) {
+ obuf = malloc(1024);
+ obuflen = 1024;
+ obuf = (char *) malloc(obuflen);
+ osav = obuf;
+ iconv(ic, &ibuf, &ibuflen, &obuf, &obuflen);
+ osav[1024-obuflen] = 0;
+ snprintf(newbuf, sizeof newbuf, "%s%s%s", buf, osav, end);
+ strcpy(buf, newbuf);
+ free(osav);
+ iconv_close(ic);
+ }
+ else {
+ snprintf(newbuf, sizeof newbuf, "%s(unreadable)%s", buf, end);
+ strcpy(buf, newbuf);
+ }
+
+ free(isav);
+ }
+
+}
+#endif
+
+