sycn with 0.8.8cvs11
[claws.git] / src / procmime.c
index a0a7e33..97585cc 100644 (file)
@@ -1,6 +1,6 @@
 /*
  * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
- * Copyright (C) 1999-2001 Hiroyuki Yamamoto
+ * Copyright (C) 1999-2003 Hiroyuki Yamamoto
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -33,6 +33,7 @@
 #include "procmime.h"
 #include "procheader.h"
 #include "base64.h"
+#include "quoted-printable.h"
 #include "uuencode.h"
 #include "unmime.h"
 #include "html.h"
@@ -45,6 +46,8 @@
 #  include "rfc2015.h"
 #endif
 
+#include "prefs_gtk.h"
+
 static GHashTable *procmime_get_mime_type_table        (void);
 
 MimeInfo *procmime_mimeinfo_new(void)
@@ -58,28 +61,6 @@ MimeInfo *procmime_mimeinfo_new(void)
        return mimeinfo;
 }
 
-void procmime_mimeinfo_free(MimeInfo *mimeinfo)
-{
-       if (!mimeinfo) return;
-
-       g_free(mimeinfo->encoding);
-       g_free(mimeinfo->content_type);
-       g_free(mimeinfo->charset);
-       g_free(mimeinfo->name);
-       g_free(mimeinfo->boundary);
-       g_free(mimeinfo->content_disposition);
-       g_free(mimeinfo->filename);
-#if USE_GPGME
-       g_free(mimeinfo->plaintextfile);
-       g_free(mimeinfo->sigstatus);
-       g_free(mimeinfo->sigstatus_full);
-#endif
-
-       procmime_mimeinfo_free(mimeinfo->sub);
-
-       g_free(mimeinfo);
-}
-
 void procmime_mimeinfo_free_all(MimeInfo *mimeinfo)
 {
        while (mimeinfo != NULL) {
@@ -166,6 +147,12 @@ MimeInfo *procmime_mimeinfo_next(MimeInfo *mimeinfo)
        if (mimeinfo->next)
                return mimeinfo->next;
 
+       if (mimeinfo->main) {
+               mimeinfo = mimeinfo->main;
+               if (mimeinfo->next)
+                       return mimeinfo->next;
+       }
+
        for (mimeinfo = mimeinfo->parent; mimeinfo != NULL;
             mimeinfo = mimeinfo->parent) {
                if (mimeinfo->next)
@@ -188,7 +175,7 @@ MimeInfo *procmime_scan_message(MsgInfo *msginfo)
        g_return_val_if_fail(msginfo != NULL, NULL);
 
        if ((fp = procmsg_open_message(msginfo)) == NULL) return NULL;
-       mimeinfo = procmime_scan_mime_header(fp, MIME_TEXT);
+       mimeinfo = procmime_scan_mime_header(fp);
 
        if (mimeinfo) {
                if (mimeinfo->mime_type != MIME_MULTIPART) {
@@ -216,7 +203,6 @@ void procmime_scan_multipart_message(MimeInfo *mimeinfo, FILE *fp)
        gchar buf[BUFFSIZE];
        glong fpos, prev_fpos;
        gint npart;
-       ContentType default_type;
 
        g_return_if_fail(mimeinfo != NULL);
        g_return_if_fail(mimeinfo->mime_type != MIME_TEXT);
@@ -243,19 +229,14 @@ void procmime_scan_multipart_message(MimeInfo *mimeinfo, FILE *fp)
                return;
        }
 
-       /* Sets default subpart type for multipart/digest */
-       if (!strncasecmp(mimeinfo->content_type, "multipart/digest", 16))
-               default_type = MIME_MESSAGE_RFC822;
-       else
-               default_type = MIME_TEXT;
-
        for (npart = 0;; npart++) {
                MimeInfo *partinfo;
                gboolean eom = FALSE;
 
                prev_fpos = fpos;
+               debug_print("prev_fpos: %ld\n", fpos);
 
-               partinfo = procmime_scan_mime_header(fp, default_type);
+               partinfo = procmime_scan_mime_header(fp);
                if (!partinfo) break;
                procmime_mimeinfo_insert(mimeinfo, partinfo);
 
@@ -265,17 +246,22 @@ void procmime_scan_multipart_message(MimeInfo *mimeinfo, FILE *fp)
                } else if (partinfo->mime_type == MIME_MESSAGE_RFC822) {
                        MimeInfo *sub;
 
-                       partinfo->sub = sub = procmime_scan_mime_header
-                                             (fp, MIME_TEXT);
+                       partinfo->sub = sub = procmime_scan_mime_header(fp);
                        if (!sub) break;
+
                        sub->level = partinfo->level + 1;
                        sub->parent = partinfo;
                        sub->main = partinfo;
 
-                       if (sub->mime_type == MIME_MULTIPART) {
-                               if (sub->level < 8)
+                       if (sub->level < 8) {
+                               if (sub->mime_type == MIME_MULTIPART) {
+                                       procmime_scan_multipart_message
+                                               (sub, fp);
+                               } else if (sub->mime_type == MIME_MESSAGE_RFC822) {
+                                       fseek(fp, sub->fpos, SEEK_SET);
                                        procmime_scan_multipart_message
                                                (sub, fp);
+                               }
                        }
                }
 
@@ -289,11 +275,23 @@ void procmime_scan_multipart_message(MimeInfo *mimeinfo, FILE *fp)
                                break;
                        }
                }
-               if (p == NULL)
-                       eom = TRUE;     /* broken MIME message */
+               if (p == NULL) {
+                       /* broken MIME, or single part MIME message */
+                       buf[0] = '\0';
+                       eom = TRUE;
+               }
                fpos = ftell(fp);
+               debug_print("fpos: %ld\n", fpos);
 
                partinfo->size = fpos - prev_fpos - strlen(buf);
+               debug_print("partinfo->size: %d\n", partinfo->size);
+               if (partinfo->sub && !partinfo->sub->sub &&
+                   !partinfo->sub->children) {
+                       partinfo->sub->size = fpos - partinfo->sub->fpos - strlen(buf);
+                       debug_print("partinfo->sub->size: %d\n",
+                                   partinfo->sub->size);
+               }
+               debug_print("boundary: %s\n", buf);
 
                if (eom) break;
        }
@@ -384,7 +382,10 @@ void procmime_scan_content_type(MimeInfo *mimeinfo, const gchar *content_type)
                                Xalloca(tmp, len, return);
                                conv_unmime_header(tmp, len, value, NULL);
                                g_free(mimeinfo->name);
-                               mimeinfo->name = g_strdup(tmp);
+                               /*pgp signatures should NOT have a name */
+                               if (mimeinfo->content_type 
+                               &&  strcasecmp(mimeinfo->content_type, "application/pgp-signature"))
+                                       mimeinfo->name = g_strdup(tmp);
                        } else if (!strcasecmp(attr, "boundary"))
                                mimeinfo->boundary = g_strdup(value);
                }
@@ -448,7 +449,10 @@ void procmime_scan_content_disposition(MimeInfo *mimeinfo,
                                Xalloca(tmp, len, return);
                                conv_unmime_header(tmp, len, value, NULL);
                                g_free(mimeinfo->filename);
-                               mimeinfo->filename = g_strdup(tmp);
+                               /*pgp signatures should NOT have a name */
+                               if (mimeinfo->content_type 
+                               &&  strcasecmp(mimeinfo->content_type, "application/pgp-signature"))
+                                       mimeinfo->filename = g_strdup(tmp);
                                break;
                        }
                }
@@ -461,7 +465,6 @@ void procmime_scan_content_disposition(MimeInfo *mimeinfo,
 void procmime_scan_content_description(MimeInfo *mimeinfo,
                                       const gchar *content_description)
 {
-       gchar *delim, *p, *dispos;
        gchar *buf;
 
        gchar *tmp;
@@ -480,13 +483,16 @@ void procmime_scan_content_description(MimeInfo *mimeinfo,
        Xalloca(tmp, blen, return);
        conv_unmime_header(tmp, blen, buf, NULL);
        g_free(mimeinfo->name);
-       mimeinfo->name = g_strdup(tmp);
+       mimeinfo->name = NULL;
+       /*pgp signatures should NOT have a name */
+       if (mimeinfo->content_type 
+       &&  strcasecmp(mimeinfo->content_type, "application/pgp-signature"))
+               mimeinfo->name = g_strdup(tmp);
 }
 
 void procmime_scan_subject(MimeInfo *mimeinfo,
                           const gchar *subject)
 {
-       gchar *delim, *p, *dispos;
        gchar *buf;
 
        gchar *tmp;
@@ -517,7 +523,7 @@ enum
        H_SUBJECT                   = 4
 };
 
-MimeInfo *procmime_scan_mime_header(FILE *fp, ContentType default_type)
+MimeInfo *procmime_scan_mime_header(FILE *fp)
 {
        static HeaderEntry hentry[] = {{"Content-Transfer-Encoding:",
                                                          NULL, FALSE},
@@ -537,8 +543,7 @@ MimeInfo *procmime_scan_mime_header(FILE *fp, ContentType default_type)
        g_return_val_if_fail(fp != NULL, NULL);
 
        mimeinfo = procmime_mimeinfo_new();
-       /* Needed for multipart/digest */
-       mimeinfo->mime_type = default_type;
+       mimeinfo->mime_type = MIME_TEXT;
        mimeinfo->encoding_type = ENC_7BIT;
        mimeinfo->fpos = ftell(fp);
 
@@ -572,13 +577,8 @@ MimeInfo *procmime_scan_mime_header(FILE *fp, ContentType default_type)
                        mimeinfo->mime_type = procmime_scan_mime_type(type);
        }
 
-       if (!mimeinfo->content_type) {
-               if (mimeinfo->mime_type == MIME_MESSAGE_RFC822) {
-                       mimeinfo->content_type = g_strdup("message/rfc822");
-               } else {
+       if (!mimeinfo->content_type)
                        mimeinfo->content_type = g_strdup("text/plain");
-               }
-       }
 
        return mimeinfo;
 }
@@ -608,15 +608,12 @@ FILE *procmime_decode_content(FILE *outfp, FILE *infp, MimeInfo *mimeinfo)
        }
 
        if (mimeinfo->encoding_type == ENC_QUOTED_PRINTABLE) {
-               gboolean softline = FALSE;
-
                while (fgets(buf, sizeof(buf), infp) != NULL &&
                       (!boundary ||
                        !IS_BOUNDARY(buf, boundary, boundary_len))) {
-                       guchar *p = buf;
-
-                       softline = DoOneQPLine(&p, FALSE, softline);
-                       fwrite(buf, p - (guchar *)buf, 1, outfp);
+                       gint len;
+                       len = qp_decode_line(buf);
+                       fwrite(buf, len, 1, outfp);
                }
        } else if (mimeinfo->encoding_type == ENC_BASE64) {
                gchar outbuf[BUFFSIZE];
@@ -678,7 +675,7 @@ gint procmime_get_part(const gchar *outfile, const gchar *infile,
        g_return_val_if_fail(infile != NULL, -1);
        g_return_val_if_fail(mimeinfo != NULL, -1);
 
-       if ((infp = fopen(infile, "r")) == NULL) {
+       if ((infp = fopen(infile, "rb")) == NULL) {
                FILE_OP_ERROR(infile, "fopen");
                return -1;
        }
@@ -687,7 +684,7 @@ gint procmime_get_part(const gchar *outfile, const gchar *infile,
                fclose(infp);
                return -1;
        }
-       if ((outfp = fopen(outfile, "w")) == NULL) {
+       if ((outfp = fopen(outfile, "wb")) == NULL) {
                FILE_OP_ERROR(outfile, "fopen");
                fclose(infp);
                return -1;
@@ -708,6 +705,100 @@ gint procmime_get_part(const gchar *outfile, const gchar *infile,
        return 0;
 }
 
+struct ContentRenderer {
+       char * content_type;
+       char * renderer;
+};
+
+static GList * renderer_list = NULL;
+
+static struct ContentRenderer *
+content_renderer_new(char * content_type, char * renderer)
+{
+       struct ContentRenderer * cr;
+
+       cr = g_new(struct ContentRenderer, 1);
+       if (cr == NULL)
+               return NULL;
+
+       cr->content_type = g_strdup(content_type);
+       cr->renderer = g_strdup(renderer);
+
+       return cr;
+}
+
+static void content_renderer_free(struct ContentRenderer * cr)
+{
+       g_free(cr->content_type);
+       g_free(cr->renderer);
+       g_free(cr);
+}
+
+void renderer_read_config(void)
+{
+       gchar buf[BUFFSIZE];
+       FILE * f;
+       gchar * rcpath;
+
+       g_list_foreach(renderer_list, (GFunc) content_renderer_free, NULL);
+       renderer_list = NULL;
+
+       rcpath = g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S, RENDERER_RC, NULL);
+       f = fopen(rcpath, "rb");
+       g_free(rcpath);
+       
+       if (f == NULL)
+               return;
+
+       while (fgets(buf, BUFFSIZE, f)) {
+               char * p;
+               struct ContentRenderer * cr;
+
+               strretchomp(buf);
+               p = strchr(buf, ' ');
+               if (p == NULL)
+                       continue;
+               * p = 0;
+
+               cr = content_renderer_new(buf, p + 1);
+               if (cr == NULL)
+                       continue;
+
+               renderer_list = g_list_append(renderer_list, cr);
+       }
+
+       fclose(f);
+}
+
+void renderer_write_config(void)
+{
+       gchar * rcpath;
+       PrefFile *pfile;
+       GList * cur;
+
+       rcpath = g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S, RENDERER_RC, NULL);
+       
+       if ((pfile = prefs_write_open(rcpath)) == NULL) {
+               g_warning("failed to write configuration to file\n");
+               g_free(rcpath);
+               return;
+       }
+
+       g_free(rcpath);
+
+       for(cur = renderer_list ; cur != NULL ; cur = cur->next) {
+               struct ContentRenderer * renderer;
+               renderer = cur->data;
+               fprintf(pfile->fp, "%s %s\n", renderer->content_type,
+                       renderer->renderer);
+       }
+
+       if (prefs_file_close(pfile) < 0) {
+               g_warning("failed to write configuration to file\n");
+               return;
+       }
+}
+
 FILE *procmime_get_text_content(MimeInfo *mimeinfo, FILE *infp)
 {
        FILE *tmpfp, *outfp;
@@ -715,6 +806,8 @@ FILE *procmime_get_text_content(MimeInfo *mimeinfo, FILE *infp)
        gboolean conv_fail = FALSE;
        gchar buf[BUFFSIZE];
        gchar *str;
+       struct ContentRenderer * renderer;
+       GList * cur;
 
        g_return_val_if_fail(mimeinfo != NULL, NULL);
        g_return_val_if_fail(infp != NULL, NULL);
@@ -743,7 +836,39 @@ FILE *procmime_get_text_content(MimeInfo *mimeinfo, FILE *infp)
        src_codeset = prefs_common.force_charset
                ? prefs_common.force_charset : mimeinfo->charset;
 
-       if (mimeinfo->mime_type == MIME_TEXT) {
+       renderer = NULL;
+
+       for(cur = renderer_list ; cur != NULL ; cur = cur->next) {
+               struct ContentRenderer * cr;
+               cr = cur->data;
+               if (g_strcasecmp(cr->content_type,
+                                mimeinfo->content_type) == 0) {
+                       renderer = cr;
+                       break;
+               }
+       }
+
+       if (renderer != NULL) {
+               FILE * p;
+               int oldout;
+               
+               oldout = dup(1);
+               
+               dup2(fileno(outfp), 1);
+               
+               p = popen(renderer->renderer, "w");
+               if (p != NULL) {
+                       size_t count;
+                       
+                       while ((count =
+                               fread(buf, sizeof(char), sizeof(buf),
+                                     tmpfp)) > 0)
+                               fwrite(buf, sizeof(char), count, p);
+                       pclose(p);
+               }
+               
+               dup2(oldout, 1);
+       } else if (mimeinfo->mime_type == MIME_TEXT) {
                while (fgets(buf, sizeof(buf), tmpfp) != NULL) {
                        str = conv_codeset_strdup(buf, src_codeset, NULL);
                        if (str) {
@@ -779,7 +904,7 @@ FILE *procmime_get_text_content(MimeInfo *mimeinfo, FILE *infp)
        }
 
        if (conv_fail)
-               g_warning(_("procmime_get_text_content(): Code conversion failed.\n"));
+               g_warning("procmime_get_text_content(): Code conversion failed.\n");
 
        fclose(tmpfp);
        rewind(outfp);
@@ -838,7 +963,7 @@ gboolean procmime_find_string_part(MimeInfo *mimeinfo, const gchar *filename,
                             mimeinfo->mime_type == MIME_TEXT_ENRICHED, FALSE);
        g_return_val_if_fail(str != NULL, FALSE);
 
-       if ((infp = fopen(filename, "r")) == NULL) {
+       if ((infp = fopen(filename, "rb")) == NULL) {
                FILE_OP_ERROR(filename, "fopen");
                return FALSE;
        }
@@ -918,6 +1043,8 @@ gchar *procmime_get_tmp_file_name(MimeInfo *mimeinfo)
                        : mimeinfo->name ? mimeinfo->name : "mimetmp";
                base = g_basename(base);
                if (*base == '\0') base = "mimetmp";
+               Xstrdup_a(base, base, return NULL);
+               subst_for_filename(base);
        }
 
        filename = g_strconcat(get_mime_tmp_dir(), G_DIR_SEPARATOR_S,
@@ -964,7 +1091,8 @@ gchar *procmime_get_mime_type(const gchar *filename)
 {
        static GHashTable *mime_type_table = NULL;
        MimeType *mime_type;
-       const gchar *ext, *p;
+       const gchar *p;
+       gchar *ext;
 
        if (!mime_type_table) {
                mime_type_table = procmime_get_mime_type_table();
@@ -973,11 +1101,10 @@ gchar *procmime_get_mime_type(const gchar *filename)
 
        filename = g_basename(filename);
        p = strrchr(filename, '.');
-       if (p)
-               ext = p + 1;
-       else
-               return NULL;
+       if (!p) return NULL;
 
+       Xstrdup_a(ext, p + 1, return NULL);
+       g_strdown(ext);
        mime_type = g_hash_table_lookup(mime_type_table, ext);
        if (mime_type) {
                gchar *str;
@@ -1027,15 +1154,23 @@ static GHashTable *procmime_get_mime_type_table(void)
 
        for (cur = mime_type_list; cur != NULL; cur = cur->next) {
                gint i;
+               gchar *key;
 
                mime_type = (MimeType *)cur->data;
 
                if (!mime_type->extension) continue;
 
                exts = g_strsplit(mime_type->extension, " ", 16);
-               for (i = 0; exts[i] != NULL; i++)
-                       g_hash_table_insert(table, g_strdup(exts[i]),
-                                           mime_type);
+               for (i = 0; exts[i] != NULL; i++) {
+                       /* make the key case insensitive */
+                       g_strdown(exts[i]);
+                       /* use previously dup'd key on overwriting */
+                       if (g_hash_table_lookup(table, exts[i]))
+                               key = exts[i];
+                       else
+                               key = g_strdup(exts[i]);
+                       g_hash_table_insert(table, key, mime_type);
+               }
                g_strfreev(exts);
        }
 
@@ -1053,8 +1188,8 @@ GList *procmime_get_mime_type_list(void)
        if (mime_type_list) 
                return mime_type_list;
 
-       if ((fp = fopen("/etc/mime.types", "r")) == NULL) {
-               if ((fp = fopen(SYSCONFDIR "/mime.types", "r")) == NULL) {
+       if ((fp = fopen("/etc/mime.types", "rb")) == NULL) {
+               if ((fp = fopen(SYSCONFDIR "/mime.types", "rb")) == NULL) {
                        FILE_OP_ERROR(SYSCONFDIR "/mime.types", "fopen");
                        return NULL;
                }
@@ -1103,21 +1238,66 @@ EncodingType procmime_get_encoding_for_charset(const gchar *charset)
        else if (!strncasecmp(charset, "ISO-2022-", 9) ||
                 !strcasecmp(charset, "US-ASCII"))
                return ENC_7BIT;
+       else if (!strcasecmp(charset, "ISO-8859-5") ||
+                !strncasecmp(charset, "KOI8-", 5) ||
+                !strcasecmp(charset, "Windows-1251"))
+               return ENC_8BIT;
+       else if (!strncasecmp(charset, "ISO-8859-", 9))
+               return ENC_QUOTED_PRINTABLE;
        else
                return ENC_8BIT;
-               /* return ENC_BASE64; */
-               /* return ENC_QUOTED_PRINTABLE; */
 }
 
-const gchar *procmime_get_encoding_str(EncodingType encoding)
+EncodingType procmime_get_encoding_for_file(const gchar *file)
 {
-       static const gchar *encoding_str[] = {
-               "7bit", "8bit", "quoted-printable", "base64", "x-uuencode",
-               NULL
-       };
+       FILE *fp;
+       guchar buf[BUFSIZ];
+       size_t len;
 
-       if (encoding >= ENC_7BIT && encoding <= ENC_UNKNOWN)
-               return encoding_str[encoding];
-       else
-               return NULL;
+       if ((fp = fopen(file, "rb")) == NULL) {
+               FILE_OP_ERROR(file, "fopen");
+               return ENC_UNKNOWN;
+       }
+
+       while ((len = fread(buf, sizeof(gchar), sizeof(buf), fp)) > 0) {
+               guchar *p;
+               gint i;
+
+               for (p = buf, i = 0; i < len; p++, i++) {
+                       if (*p & 0x80) {
+                               fclose(fp);
+                               return ENC_BASE64;
+                       }
+               }
+       }
+
+       fclose(fp);
+       return ENC_7BIT;
+}
+
+struct EncodingTable 
+{
+       gchar *str;
+       EncodingType enc_type;
+};
+
+struct EncodingTable encoding_table[] = {
+       {"7bit", ENC_7BIT},
+       {"8bit", ENC_8BIT},
+       {"binary", ENC_BINARY},
+       {"quoted-printable", ENC_QUOTED_PRINTABLE},
+       {"base64", ENC_BASE64},
+       {"x-uuencode", ENC_UNKNOWN},
+       {NULL, ENC_UNKNOWN},
+};
+
+const gchar *procmime_get_encoding_str(EncodingType encoding)
+{
+       struct EncodingTable *enc_table;
+       
+       for (enc_table = encoding_table; enc_table->str != NULL; enc_table++) {
+               if (enc_table->enc_type == encoding)
+                       return enc_table->str;
+       }
+       return NULL;
 }