)
+dnl Here is the check for a libc integrated iconv
+AC_ARG_ENABLE(iconv,
+ [ --disable-iconv do not use iconv charset conversion],
+ ok_iconv=no, ok_iconv=yes)
+
+AC_MSG_CHECKING(Checking to see if your system supports iconv)
+AC_TRY_RUN([
+ #include <iconv.h>
+ main() {
+ iconv_t ic = (iconv_t)(-1) ;
+ ic = iconv_open("UTF-8", "us-ascii");
+ iconv_close(ic);
+ exit(0);
+ }
+ ],
+ [
+ ok_iconv=yes
+ AC_MSG_RESULT([yes])
+ ],
+ [
+ ok_iconv=no
+ AC_MSG_RESULT([no])
+ ]
+)
+
+dnl Check for iconv in external libiconv
+if test "$ok_iconv" = no; then
+ AC_MSG_CHECKING(Checking for an external libiconv)
+ OLD_LDFLAGS="$LDFLAGS"
+ LDFLAGS="$LDFLAGS -liconv"
+ AC_TRY_RUN([
+ #include <iconv.h>
+ main() {
+ iconv_t ic = (iconv_t)(-1) ;
+ ic = iconv_open("UTF-8", "us-ascii");
+ iconv_close(ic);
+ }
+ ],
+ [
+ ok_iconv=yes
+ AC_MSG_RESULT([yes])
+ ],
+ [
+ ok_iconv=no
+ LDFLAGS="$OLD_LDFLAGS"
+ AC_MSG_RESULT([no])
+ ]
+ )
+fi
+if test "$ok_iconv" != "no"; then
+ AC_MSG_RESULT(WebCit will be built with character set conversion.)
+ AC_DEFINE(HAVE_ICONV,[],[whether we have iconv for charset conversion])
+else
+ AC_MSG_RESULT(WebCit will be built without character set conversion.)
+fi
+
+AC_CHECK_LIB(intl, libintl_bindtextdomain, [LDFLAGS="$LDFLAGS -lintl"])
+
+
AC_ARG_ENABLE(threaded-client, [ --disable-threaded-client
disable multithreaded client])
echo ------------------------------------------------------------------------
echo 'zlib compression: ' $ok_zlib
echo 'LDAP support: ' $ok_ldap
+echo 'Character set conversion support:' $ok_iconv
echo 'DSpam Scanning support: ' $ok_libdspam
echo
echo 'Note: if you are not using Linux, make sure you are using GNU make'
#endif
+#ifdef HAVE_ICONV
+#include <iconv.h>
+
+/*
+ * Wrapper around iconv_open()
+ * Our version adds aliases for non-standard Microsoft charsets
+ * such as 'MS950', aliasing them to names like 'CP950'
+ *
+ * tocode Target encoding
+ * fromcode Source encoding
+ */
+iconv_t ctdl_iconv_open(const char *tocode, const char *fromcode)
+{
+ iconv_t ic = (iconv_t)(-1) ;
+ ic = iconv_open(tocode, fromcode);
+ if (ic == (iconv_t)(-1) ) {
+ char alias_fromcode[64];
+ if ( (strlen(fromcode) == 5) && (!strncasecmp(fromcode, "MS", 2)) ) {
+ safestrncpy(alias_fromcode, fromcode, sizeof alias_fromcode);
+ alias_fromcode[0] = 'C';
+ alias_fromcode[1] = 'P';
+ ic = iconv_open(tocode, alias_fromcode);
+ }
+ }
+ return(ic);
+}
+
+
+
+inline char *FindNextEnd (char *bptr)
+{
+ char * end;
+ /* Find the next ?Q? */
+ end = strchr(bptr + 2, '?');
+ if (end == NULL) return NULL;
+ if (((*(end + 1) == 'B') || (*(end + 1) == 'Q')) &&
+ (*(end + 2) == '?')) {
+ /* skip on to the end of the cluster, the next ?= */
+ end = strstr(end + 3, "?=");
+ }
+ else
+ /* sort of half valid encoding, try to find an end. */
+ end = strstr(bptr, "?=");
+ return end;
+}
+
+/*
+ * Handle subjects with RFC2047 encoding such as:
+ * =?koi8-r?B?78bP0s3Mxc7JxSDXz9rE1dvO2c3JINvB0sHNySDP?=
+ */
+void utf8ify_rfc822_string(char *buf) {
+ char *start, *end, *next, *nextend, *ptr;
+ 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 */
+ int passes = 0;
+ int i, len, delta;
+ int illegal_non_rfc2047_encoding = 0;
+
+ /* Sometimes, badly formed messages contain strings which were simply
+ * written out directly in some foreign character set instead of
+ * using RFC2047 encoding. This is illegal but we will attempt to
+ * handle it anyway by converting from a user-specified default
+ * charset to UTF-8 if we see any nonprintable characters.
+ */
+ len = strlen(buf);
+ for (i=0; i<len; ++i) {
+ if ((buf[i] < 32) || (buf[i] > 126)) {
+ illegal_non_rfc2047_encoding = 1;
+ i = len; ///< take a shortcut, it won't be more than one.
+ }
+ }
+ if (illegal_non_rfc2047_encoding) {
+ const char *default_header_charset = "iso-8859-1";
+ if ( (strcasecmp(default_header_charset, "UTF-8")) && (strcasecmp(default_header_charset, "us-ascii")) ) {
+ ic = ctdl_iconv_open("UTF-8", default_header_charset);
+ if (ic != (iconv_t)(-1) ) {
+ ibuf = malloc(1024);
+ isav = ibuf;
+ safestrncpy(ibuf, buf, 1024);
+ ibuflen = strlen(ibuf);
+ obuflen = 1024;
+ obuf = (char *) malloc(obuflen);
+ osav = obuf;
+ iconv(ic, &ibuf, &ibuflen, &obuf, &obuflen);
+ osav[1024-obuflen] = 0;
+ strcpy(buf, osav);
+ free(osav);
+ iconv_close(ic);
+ free(isav);
+ }
+ }
+ }
+
+ /* pre evaluate the first pair */
+ nextend = end = NULL;
+ len = strlen(buf);
+ start = strstr(buf, "=?");
+ if (start != NULL)
+ end = FindNextEnd (start);
+
+ while ((start != NULL) && (end != NULL))
+ {
+ next = strstr(end, "=?");
+ if (next != NULL)
+ nextend = FindNextEnd(next);
+ if (nextend == NULL)
+ next = NULL;
+
+ /* did we find two partitions */
+ if ((next != NULL) &&
+ ((next - end) > 2))
+ {
+ ptr = end + 2;
+ while ((ptr < next) &&
+ (isspace(*ptr) ||
+ (*ptr == '\r') ||
+ (*ptr == '\n') ||
+ (*ptr == '\t')))
+ ptr ++;
+ /* did we find a gab just filled with blanks? */
+ if (ptr == next)
+ {
+ memmove (end + 2,
+ next,
+ len - (next - start));
+
+ /* now terminate the gab at the end */
+ delta = (next - end) - 2;
+ len -= delta;
+ buf[len] = '\0';
+
+ /* move next to its new location. */
+ next -= delta;
+ nextend -= delta;
+ }
+ }
+ /* our next-pair is our new first pair now. */
+ start = next;
+ end = nextend;
+ }
+
+ /* Now we handle foreign character sets properly encoded
+ * in RFC2047 format.
+ */
+ while (start=strstr(buf, "=?"), end=FindNextEnd((start != NULL)? start : 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);
+
+ ibuf = malloc(1024);
+ isav = ibuf;
+ if (!strcasecmp(encoding, "B")) { /**< base64 */
+ ibuflen = CtdlDecodeBase64(ibuf, istr, strlen(istr));
+ }
+ else if (!strcasecmp(encoding, "Q")) { /**< quoted-printable */
+ size_t len;
+ long pos;
+
+ len = strlen(istr);
+ pos = 0;
+ while (pos < len)
+ {
+ if (istr[pos] == '_') istr[pos] = ' ';
+ pos++;
+ }
+
+ ibuflen = CtdlDecodeQuotedPrintable(ibuf, istr, len);
+ }
+ else {
+ strcpy(ibuf, istr); /**< unknown encoding */
+ ibuflen = strlen(istr);
+ }
+
+ ic = ctdl_iconv_open("UTF-8", charset);
+ if (ic != (iconv_t)(-1) ) {
+ obuflen = 1024;
+ obuf = (char *) malloc(obuflen);
+ osav = obuf;
+ iconv(ic, &ibuf, &ibuflen, &obuf, &obuflen);
+ osav[1024-obuflen] = 0;
+
+ end = start;
+ end++;
+ strcpy(start, "");
+ remove_token(end, 0, '?');
+ remove_token(end, 0, '?');
+ remove_token(end, 0, '?');
+ remove_token(end, 0, '?');
+ strcpy(end, &end[1]);
+
+ snprintf(newbuf, sizeof newbuf, "%s%s%s", buf, osav, end);
+ strcpy(buf, newbuf);
+ free(osav);
+ iconv_close(ic);
+ }
+ else {
+ end = start;
+ end++;
+ strcpy(start, "");
+ remove_token(end, 0, '?');
+ remove_token(end, 0, '?');
+ remove_token(end, 0, '?');
+ remove_token(end, 0, '?');
+ strcpy(end, &end[1]);
+
+ snprintf(newbuf, sizeof newbuf, "%s(unreadable)%s", buf, end);
+ strcpy(buf, newbuf);
+ }
+
+ free(isav);
+
+ /*
+ * Since spammers will go to all sorts of absurd lengths to get their
+ * messages through, there are LOTS of corrupt headers out there.
+ * So, prevent a really badly formed RFC2047 header from throwing
+ * this function into an infinite loop.
+ */
+ ++passes;
+ if (passes > 20) return;
+ }
+
+}
+#else
+inline void utf8ify_rfc822_string(char *a){};
+
+#endif
+
+
+
struct trynamebuf {
char buffer1[SIZ];
char buffer2[SIZ];
if (msg->cm_fields[field] != NULL) {
for (j=0; j<num_tokens(msg->cm_fields[field], ','); ++j) {
extract_token(addr, msg->cm_fields[field], j, ',', sizeof addr);
+ utf8ify_rfc822_string(addr);
process_rfc822_addr(addr, user, node, name);
h = CtdlHostAlias(node);
if ( (h != hostalias_localhost) && (h != hostalias_directory) ) {
projects / citadel.git / commitdiff