-/*
- * show content of type "message/rfc822"
- */
-
-static int
-show_message_rfc822 (CT ct, int serial, int alternate)
-{
- char *cp, buffer[BUFSIZ];
- CI ci = &ct->c_ctinfo;
-
- /* Check for mhn-show-type/subtype */
- snprintf (buffer, sizeof(buffer), "%s-show-%s/%s",
- invo_name, ci->ci_type, ci->ci_subtype);
- if ((cp = context_find (buffer)) && *cp != '\0')
- return show_content_aux (ct, serial, alternate, cp, NULL);
-
- /* Check for mhn-show-type */
- snprintf (buffer, sizeof(buffer), "%s-show-%s", invo_name, ci->ci_type);
- if ((cp = context_find (buffer)) && *cp != '\0')
- return show_content_aux (ct, serial, alternate, cp, NULL);
+int
+convert_charset (CT ct, char *dest_charset, int *message_mods) {
+ char *src_charset = content_charset (ct);
+ int status = OK;
+
+ /* norm_charmap() is case sensitive. */
+ char *src_charset_u = upcase (src_charset);
+ char *dest_charset_u = upcase (dest_charset);
+ int different_charsets =
+ strcmp (norm_charmap (src_charset), norm_charmap (dest_charset));
+
+ free (dest_charset_u);
+ free (src_charset_u);
+
+ if (different_charsets) {
+#ifdef HAVE_ICONV
+ iconv_t conv_desc = NULL;
+ char *dest;
+ int fd = -1;
+ char **file = NULL;
+ FILE **fp = NULL;
+ size_t begin;
+ size_t end;
+ int opened_input_file = 0;
+ char src_buffer[BUFSIZ];
+ HF hf;
+ char *tempfile;
+
+ if ((conv_desc = iconv_open (dest_charset, src_charset)) ==
+ (iconv_t) -1) {
+ advise (NULL, "Can't convert %s to %s", src_charset, dest_charset);
+ return NOTOK;
+ }
+
+ if ((tempfile = m_mktemp2 (NULL, invo_name, &fd, NULL)) == NULL) {
+ adios (NULL, "unable to create temporary file in %s",
+ get_temp_dir());
+ }
+ dest = add (tempfile, NULL);
+
+ if (ct->c_cefile.ce_file) {
+ file = &ct->c_cefile.ce_file;
+ fp = &ct->c_cefile.ce_fp;
+ begin = end = 0;
+ } else if (ct->c_file) {
+ file = &ct->c_file;
+ fp = &ct->c_fp;
+ begin = (size_t) ct->c_begin;
+ end = (size_t) ct->c_end;
+ } /* else no input file: shouldn't happen */
+
+ if (file && *file && fp) {
+ if (! *fp) {
+ if ((*fp = fopen (*file, "r")) == NULL) {
+ advise (*file, "unable to open for reading");
+ status = NOTOK;
+ } else {
+ opened_input_file = 1;
+ }
+ }
+ }
+
+ if (fp && *fp) {
+ size_t inbytes;
+ size_t bytes_to_read =
+ end > 0 && end > begin ? end - begin : sizeof src_buffer;
+
+ fseeko (*fp, begin, SEEK_SET);
+ while ((inbytes = fread (src_buffer, 1,
+ min (bytes_to_read, sizeof src_buffer),
+ *fp)) > 0) {
+ char dest_buffer[BUFSIZ];
+ ICONV_CONST char *ib = src_buffer;
+ char *ob = dest_buffer;
+ size_t outbytes = sizeof dest_buffer;
+ size_t outbytes_before = outbytes;
+
+ if (end > 0) bytes_to_read -= inbytes;
+
+ if (iconv (conv_desc, &ib, &inbytes, &ob, &outbytes) ==
+ (size_t) -1) {
+ status = NOTOK;
+ break;
+ } else {
+ write (fd, dest_buffer, outbytes_before - outbytes);
+ }
+ }
+
+ if (opened_input_file) {
+ fclose (*fp);
+ *fp = NULL;
+ }
+ }
+
+ iconv_close (conv_desc);
+ close (fd);
+
+ if (status == OK) {
+ /* Replace the decoded file with the converted one. */
+ if (ct->c_cefile.ce_file) {
+ if (ct->c_cefile.ce_unlink) {
+ (void) m_unlink (ct->c_cefile.ce_file);
+ }
+ free (ct->c_cefile.ce_file);
+ }
+ ct->c_cefile.ce_file = dest;
+ ct->c_cefile.ce_unlink = 1;
+
+ ++*message_mods;
+
+ /* Update ci_attrs. */
+ src_charset = dest_charset;
+
+ /* Update ct->c_ctline. */
+ if (ct->c_ctline) {
+ char *ctline =
+ update_attr (ct->c_ctline, "charset=", dest_charset);
+
+ free (ct->c_ctline);
+ ct->c_ctline = ctline;
+ } /* else no CT line, which is odd */
+
+ /* Update Content-Type header field. */
+ for (hf = ct->c_first_hf; hf; hf = hf->next) {
+ if (! strcasecmp (TYPE_FIELD, hf->name)) {
+ char *ctline_less_newline =
+ update_attr (hf->value, "charset=", dest_charset);
+ char *ctline = concat (ctline_less_newline, "\n", NULL);
+ free (ctline_less_newline);
+
+ free (hf->value);
+ hf->value = ctline;
+ break;
+ }
+ }
+ } else {
+ (void) m_unlink (dest);
+ }
+#else /* ! HAVE_ICONV */
+ NMH_UNUSED (message_mods);
+
+ advise (NULL, "Can't convert %s to %s without iconv", src_charset,
+ dest_charset);
+ status = NOTOK;
+#endif /* ! HAVE_ICONV */
+ }
projects / nmh / blobdiff