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-rw-r--r--frontends/riscos/filetype.c352
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diff --git a/frontends/riscos/filetype.c b/frontends/riscos/filetype.c
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+/*
+ * Copyright 2004 James Bursa <bursa@users.sourceforge.net>
+ *
+ * This file is part of NetSurf, http://www.netsurf-browser.org/
+ *
+ * NetSurf is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * NetSurf is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <stdlib.h>
+#include <string.h>
+#include <unixlib/local.h>
+#include "oslib/mimemap.h"
+#include "oslib/osfile.h"
+
+#include "utils/config.h"
+#include "utils/log.h"
+#include "content/content.h"
+#include "content/fetch.h"
+#include "content/hlcache.h"
+
+#include "riscos/filetype.h"
+#include "riscos/gui.h"
+
+/* type_map must be in sorted order by file_type */
+struct type_entry {
+ bits file_type;
+ char mime_type[40];
+};
+static const struct type_entry type_map[] = {
+ {0x132, "image/ico"},
+ {0x188, "application/x-shockwave-flash"},
+ {0x695, "image/gif"},
+ {0x69c, "image/x-ms-bmp"},
+ {0xaad, "image/svg+xml"},
+ {0xaff, "image/x-drawfile"},
+ {0xb60, "image/png"},
+ {0xc85, "image/jpeg"},
+ {0xd94, "image/x-artworks"},
+ {0xf78, "image/jng"},
+ {0xf79, "text/css"},
+ {0xf81, "application/javascript"},
+ {0xf83, "image/mng"},
+ {0xfaf, "text/html"},
+ {0xff9, "image/x-riscos-sprite"},
+ {0xfff, "text/plain"},
+};
+#define TYPE_MAP_COUNT (sizeof(type_map) / sizeof(type_map[0]))
+
+#define BUF_SIZE (256)
+static char type_buf[BUF_SIZE];
+
+
+static int cmp_type(const void *x, const void *y);
+
+/* exported interface documented in riscos/filetype.h */
+const char *fetch_filetype(const char *unix_path)
+{
+ struct type_entry *t;
+ unsigned int len = strlen(unix_path) + 100;
+ char *path = calloc(len, 1);
+ char *r;
+ os_error *error;
+ bits file_type, temp;
+ int objtype;
+
+ if (!path) {
+ LOG("Insufficient memory for calloc");
+ ro_warn_user("NoMemory", 0);
+ return "application/riscos";
+ }
+
+ /* convert path to RISC OS format and read file type */
+ r = __riscosify(unix_path, 0, __RISCOSIFY_NO_SUFFIX, path, len, 0);
+ if (r == 0) {
+ LOG("__riscosify failed");
+ free(path);
+ return "application/riscos";
+ }
+
+ error = xosfile_read_stamped_no_path(path, &objtype, 0, 0, 0, 0,
+ &file_type);
+ if (error) {
+ LOG("xosfile_read_stamped_no_path failed: %s", error->errmess);
+ free(path);
+ return "application/riscos";
+ }
+
+ if (objtype == osfile_IS_DIR) {
+ sprintf(type_buf, "application/x-netsurf-directory");
+ free(path);
+ return (const char *)type_buf;
+ }
+
+ /* If filetype is text or data, and the file has an extension, try to
+ * map the extension to a filetype via the MimeMap file. */
+ if (file_type == osfile_TYPE_TEXT || file_type == osfile_TYPE_DATA) {
+ char *slash = strrchr(path, '/');
+ if (slash) {
+ error = xmimemaptranslate_extension_to_filetype(
+ slash+1, &temp);
+ if (error)
+ /* ignore error and leave file_type alone */
+ LOG("xmimemaptranslate_extension_to_filetype: ""0x%x %s", error->errnum, error->errmess);
+ else
+ file_type = temp;
+ }
+ }
+
+ /* search for MIME type in our internal table */
+ t = bsearch(&file_type, type_map, TYPE_MAP_COUNT,
+ sizeof(type_map[0]), cmp_type);
+ if (t) {
+ /* found, so return it */
+ free(path);
+ return t->mime_type;
+ }
+
+ /* not in internal table, so ask MimeMap */
+ error = xmimemaptranslate_filetype_to_mime_type(file_type, type_buf);
+ if (error) {
+ LOG("0x%x %s", error->errnum, error->errmess);
+ free(path);
+ return "application/riscos";
+ }
+ /* make sure we're NULL terminated. If we're not, the MimeMap
+ * module's probably written past the end of the buffer from
+ * SVC mode. Short of rewriting MimeMap with an incompatible API,
+ * there's nothing we can do about it.
+ */
+ type_buf[BUF_SIZE - 1] = '\0';
+
+ free(path);
+
+ LOG("mime type '%s'", type_buf);
+ return (const char *)type_buf;
+
+}
+
+/* exported interface documented in riscos/filetype.h */
+char *fetch_mimetype(const char *ro_path)
+{
+ os_error *e;
+ bits filetype = 0, load;
+ int objtype;
+ char *mime = calloc(BUF_SIZE, sizeof(char));
+ char *slash;
+ struct type_entry *t;
+
+ if (!mime) {
+ LOG("Insufficient memory for calloc");
+ ro_warn_user("NoMemory", 0);
+ return 0;
+ }
+
+ e = xosfile_read_no_path(ro_path, &objtype, &load, 0, 0, 0);
+ if (e) {
+ LOG("xosfile_read_no_path: 0x%x: %s", e->errnum, e->errmess);
+ free(mime);
+ return 0;
+ }
+
+ if (objtype == osfile_IS_DIR) {
+ free(mime);
+ return 0; /* directories are pointless */
+ }
+
+ if ((load >> 20) & 0xFFF) {
+ filetype = (load>>8) & 0x000FFF;
+ }
+ else {
+ free(mime);
+ return 0; /* no idea */
+ }
+
+ /* If filetype is text and the file has an extension, try to map the
+ * extension to a filetype via the MimeMap file. */
+ slash = strrchr(ro_path, '/');
+ if (slash && filetype == osfile_TYPE_TEXT) {
+ e = xmimemaptranslate_extension_to_filetype(slash+1, &load);
+ if (e)
+ /* if we get an error here, simply ignore it and
+ * leave filetype unchanged */
+ LOG("0x%x %s", e->errnum, e->errmess);
+ else
+ filetype = load;
+ }
+
+ /* search for MIME type in our internal table */
+ t = bsearch(&filetype, type_map, TYPE_MAP_COUNT,
+ sizeof(type_map[0]), cmp_type);
+ if (t) {
+ /* found, so return it */
+ strncpy(mime, t->mime_type, BUF_SIZE);
+ return mime;
+ }
+
+ /* not in internal table, so ask MimeMap */
+ e = xmimemaptranslate_filetype_to_mime_type(filetype, mime);
+ if (e) {
+ LOG("xmimemaptranslate_filetype_to_mime_type: 0x%x: %s", e->errnum, e->errmess);
+ free(mime);
+ return 0;
+ }
+ /* make sure we're NULL terminated. If we're not, the MimeMap
+ * module's probably written past the end of the buffer from
+ * SVC mode. Short of rewriting MimeMap with an incompatible API,
+ * there's nothing we can do about it.
+ */
+ mime[BUF_SIZE - 1] = '\0';
+
+ return mime;
+}
+
+/**
+ * Comparison function for bsearch
+ */
+int cmp_type(const void *x, const void *y)
+{
+ const bits *p = x;
+ const struct type_entry *q = y;
+ return *p < q->file_type ? -1 : (*p == q->file_type ? 0 : +1);
+}
+
+/* exported interface documented in riscos/filetype.h */
+int ro_content_filetype(hlcache_handle *c)
+{
+ lwc_string *mime_type;
+ int file_type;
+
+ file_type = ro_content_filetype_from_type(content_get_type(c));
+ if (file_type != 0)
+ return file_type;
+
+ mime_type = content_get_mime_type(c);
+
+ file_type = ro_content_filetype_from_mime_type(mime_type);
+
+ lwc_string_unref(mime_type);
+
+ return file_type;
+}
+
+
+/* exported interface documented in riscos/filetype.h */
+int ro_content_native_type(hlcache_handle *c)
+{
+ switch (ro_content_filetype(c)) {
+ case FILETYPE_JPEG: /* jpeg */
+ case FILETYPE_JNG: /* jng */
+ case FILETYPE_MNG: /* mng */
+ case FILETYPE_GIF: /* gif */
+ case FILETYPE_BMP: /* bmp */
+ case FILETYPE_ICO: /* ico */
+ case FILETYPE_PNG: /* png */
+ case 0xff9: /* sprite */
+ return osfile_TYPE_SPRITE;
+ case FILETYPE_SVG: /* svg */
+ case 0xaff: /* draw */
+ return osfile_TYPE_DRAW;
+ default:
+ break;
+ }
+
+ return osfile_TYPE_DATA;
+}
+
+
+/* exported interface documented in riscos/filetype.h */
+int ro_content_filetype_from_mime_type(lwc_string *mime_type)
+{
+ int file_type, index;
+ os_error *error;
+
+ /* Search internal type map */
+ for (index = TYPE_MAP_COUNT; index > 0; index--) {
+ const struct type_entry *e = &type_map[index - 1];
+
+ if (strlen(e->mime_type) == lwc_string_length(mime_type) &&
+ strncasecmp(e->mime_type,
+ lwc_string_data(mime_type),
+ lwc_string_length(mime_type)) == 0)
+ return e->file_type;
+ }
+
+ /* Ask MimeMap module */
+ error = xmimemaptranslate_mime_type_to_filetype(
+ lwc_string_data(mime_type), (bits *) &file_type);
+ if (error)
+ file_type = 0xffd;
+
+ return file_type;
+}
+
+
+/* exported interface documented in riscos/filetype.h */
+int ro_content_filetype_from_type(content_type type) {
+ switch (type) {
+ case CONTENT_HTML: return FILETYPE_HTML;
+ case CONTENT_TEXTPLAIN: return 0xfff;
+ case CONTENT_CSS: return 0xf79;
+ default: break;
+ }
+ return 0;
+}
+
+
+/* exported interface documented in riscos/filetype.h */
+bits ro_filetype_from_unix_path(const char *unix_path)
+{
+ unsigned int len = strlen(unix_path) + 100;
+ char *path = calloc(len, 1);
+ char *r;
+ os_error *error;
+ bits file_type;
+
+ if (!path) {
+ LOG("Insufficient memory for calloc");
+ ro_warn_user("NoMemory", 0);
+ return osfile_TYPE_DATA;
+ }
+
+ /* convert path to RISC OS format and read file type */
+ r = __riscosify(unix_path, 0, __RISCOSIFY_NO_SUFFIX, path, len, 0);
+ if (r == 0) {
+ LOG("__riscosify failed");
+ free(path);
+ return osfile_TYPE_DATA;
+ }
+
+ error = xosfile_read_stamped_no_path(path, 0, 0, 0, 0, 0,
+ &file_type);
+ if (error) {
+ LOG("xosfile_read_stamped_no_path failed: %s", error->errmess);
+ free(path);
+ return osfile_TYPE_DATA;
+ }
+
+ free(path);
+
+ return file_type;
+}
+