refixed buffer overflow
[claws.git] / src / quote_fmt_parse.y
index 2fff531408fc70df676c07a0cd4bb4adc87534b8..a28647fb5e948278eebc07d9d1a61fc0c5b84546 100644 (file)
@@ -1,16 +1,35 @@
+/*
+ * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
+ * Copyright (C) 1999-2002 Hiroyuki Yamamoto and the Sylpheed-Claws Team
+ *
+ * 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
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
 %{
 
 #include "defs.h"
 
-#include <ctype.h>
-#include <gtk/gtk.h>
 #include <glib.h>
+#include <ctype.h>
 
 #include "procmsg.h"
 #include "procmime.h"
 #include "utils.h"
-#include "intl.h"
+#include "procheader.h"
 
+#include "quote_fmt.h"
 #include "quote_fmt_lex.h"
 
 /* decl */
@@ -19,20 +38,25 @@ flex quote_fmt.l
 bison -p quote_fmt quote_fmt.y
 */
 
-static MsgInfo * msginfo = NULL;
-static gboolean * visible = NULL;
+int yylex(void);
+
+static MsgInfo *msginfo = NULL;
+static gboolean *visible = NULL;
 static gint maxsize = 0;
 static gint stacksize = 0;
 
-static gchar * buffer = NULL;
+static gchar *buffer = NULL;
 static gint bufmax = 0;
 static gint bufsize = 0;
-static gchar * quote_str = NULL;
+static const gchar *quote_str = NULL;
+static const gchar *body = NULL;
 static gint error = 0;
 
+static gint cursor_pos  = 0;
+
 static void add_visibility(gboolean val)
 {
-       stacksize ++;
+       stacksize++;
        if (maxsize < stacksize) {
                maxsize += 128;
                visible = g_realloc(visible, maxsize * sizeof(gboolean));
@@ -43,16 +67,16 @@ static void add_visibility(gboolean val)
        visible[stacksize - 1] = val;
 }
 
-static void remove_visibility()
+static void remove_visibility(void)
 {
-       stacksize --;
+       stacksize--;
 }
 
-
-static void add_buffer(gchar * s)
+static void add_buffer(const gchar *s)
 {
-       gint len = strlen(s);
-       
+       gint len;
+
+       len = strlen(s);
        if (bufsize + len + 1 > bufmax) {
                if (bufmax == 0)
                        bufmax = 128;
@@ -64,14 +88,7 @@ static void add_buffer(gchar * s)
        bufsize += len;
 }
 
-static void flush_buffer()
-{
-       if (buffer != NULL)
-               *buffer = 0;
-       bufsize = 0;
-}
-
-gchar * quote_fmt_get_buffer()
+gchar *quote_fmt_get_buffer(void)
 {
        if (error != 0)
                return NULL;
@@ -79,6 +96,11 @@ gchar * quote_fmt_get_buffer()
                return buffer;
 }
 
+gint quote_fmt_get_cursor_pos(void)
+{
+       return cursor_pos;      
+}
+
 #define INSERT(buf) \
        if (stacksize != 0 && visible[stacksize - 1]) \
                add_buffer(buf)
@@ -91,9 +113,11 @@ gchar * quote_fmt_get_buffer()
                add_buffer(tmp); \
        }
 
-void quote_fmt_init(MsgInfo * info, gchar * my_quote_str)
+void quote_fmt_init(MsgInfo *info, const gchar *my_quote_str,
+                   const gchar *my_body)
 {
        quote_str = my_quote_str;
+       body = my_body;
        msginfo = info;
        stacksize = 0;
        add_visibility(TRUE);
@@ -101,11 +125,12 @@ void quote_fmt_init(MsgInfo * info, gchar * my_quote_str)
                *buffer = 0;
        bufsize = 0;
        error = 0;
+       cursor_pos = 0;
 }
 
-void quote_fmterror(char * str)
+void quote_fmterror(char *str)
 {
-       g_warning(_("Error %s\n"), str);
+       g_warning("Error: %s\n", str);
        error = 1;
 }
 
@@ -114,7 +139,7 @@ int quote_fmtwrap(void)
        return 1;
 }
 
-static int isseparator(char ch)
+static int isseparator(int ch)
 {
        return isspace(ch) || ch == '.' || ch == '-';
 }
@@ -122,53 +147,140 @@ static int isseparator(char ch)
 
 %union {
        char chr;
+       char str[256];
 }
 
 %token SHOW_NEWSGROUPS
-%token SHOW_DATE SHOW_FROM SHOW_FULLNAME SHOW_FIRST_NAME
+%token SHOW_DATE SHOW_FROM SHOW_FULLNAME SHOW_FIRST_NAME SHOW_LAST_NAME
 %token SHOW_SENDER_INITIAL SHOW_SUBJECT SHOW_TO SHOW_MESSAGEID
 %token SHOW_PERCENT SHOW_CC SHOW_REFERENCES SHOW_MESSAGE
 %token SHOW_QUOTED_MESSAGE SHOW_BACKSLASH SHOW_TAB
-%token SHOW_EOL SHOW_QUESTION_MARK SHOW_OPARENT SHOW_CPARENT
+%token SHOW_QUOTED_MESSAGE_NO_SIGNATURE SHOW_MESSAGE_NO_SIGNATURE
+%token SHOW_EOL SHOW_QUESTION_MARK SHOW_PIPE SHOW_OPARENT SHOW_CPARENT
 %token QUERY_DATE QUERY_FROM
 %token QUERY_FULLNAME QUERY_SUBJECT QUERY_TO QUERY_NEWSGROUPS
 %token QUERY_MESSAGEID QUERY_CC QUERY_REFERENCES
+%token INSERT_FILE INSERT_PROGRAMOUTPUT
 %token OPARENT CPARENT
 %token CHARACTER
+%token SHOW_DATE_EXPR
+%token SET_CURSOR_POS
 
 %start quote_fmt
 
 %token <chr> CHARACTER
 %type <chr> character
+%type <str> string
 
 %%
 
 quote_fmt:
-       character_or_special_or_query_list;
+       character_or_special_or_insert_or_query_list;
 
-character_or_special_or_query_list:
-       character_or_special_or_query character_or_special_or_query_list
-       | character_or_special_or_query ;
+character_or_special_or_insert_or_query_list:
+       character_or_special_or_insert_or_query character_or_special_or_insert_or_query_list
+       | character_or_special_or_insert_or_query ;
 
-character_or_special_or_query:
-       special ;
+character_or_special_or_insert_or_query:
+       special
        | character
        {
                INSERT_CHARACTER($1);
        }
-       | query ;
-
+       | query
+       | insert ;
 
 character:
        CHARACTER
        ;
 
+string:
+       CHARACTER
+       {
+               $$[0] = $1;
+               $$[1] = '\0';
+       }
+       | string CHARACTER
+       {
+               int len;
+               
+               strncpy($$, $1, sizeof($$));
+               $$[sizeof($$) - 1] = '\0';
+               len = strlen($$);
+               if (len + 1 < sizeof($$)) {
+                       $$[len + 1] = '\0';
+                       $$[len] = $2;
+               }
+       };
+
 special:
        SHOW_NEWSGROUPS
        {
                if (msginfo->newsgroups)
                        INSERT(msginfo->newsgroups);
        }
+       | SHOW_DATE_EXPR OPARENT string CPARENT
+       {
+               /* 
+                * ALF - GNU C's strftime() has a nice format specifier 
+                * for time zone offset (%z). Non-standard however, so 
+                * emulate it.
+                */
+               if (msginfo->date) {
+                       char  result[100];
+                       char *rptr;
+                       char  zone[6];
+                       struct tm lt;
+                       const char *fptr;
+                       const char *zptr;
+
+#define RLEFT (sizeof result) - (rptr - result)        
+#define STR_SIZE(x) (sizeof (x) - 1)
+
+                       zone[0] = 0;
+
+                       if (procheader_date_parse_to_tm(msginfo->date, &lt, zone)) {
+                               /*
+                                * break up format string in tiny bits delimited by valid %z's and 
+                                * feed it to strftime(). don't forget that '%%z' mean literal '%z'.
+                                */
+                               for (rptr = result, fptr = $3; fptr && *fptr && rptr < &result[sizeof result - 1];) {
+                                       int         perc;
+                                       const char *p;
+                                       char       *tmp;
+                                       
+                                       if (NULL != (zptr = strstr(fptr, "%z"))) {
+                                               /*
+                                                * count nr. of prepended percent chars
+                                                */
+                                               for (perc = 0, p = zptr; p && p >= $3 && *p == '%'; p--, perc++)
+                                                       ;
+                                               /*
+                                                * feed to strftime()
+                                                */
+                                               tmp = g_strndup(fptr, zptr - fptr + (perc % 2 ? 0 : STR_SIZE("%z")));
+                                               if (tmp) {
+                                                       rptr += strftime(rptr, RLEFT, tmp, &lt);
+                                                       g_free(tmp);
+                                               }
+                                               /*
+                                                * append time zone offset
+                                                */
+                                               if (zone[0] && perc % 2) 
+                                                       rptr += g_snprintf(rptr, RLEFT, "%s", zone);
+                                               fptr = zptr + STR_SIZE("%z");
+                                       } else {
+                                               rptr += strftime(rptr, RLEFT, fptr, &lt);
+                                               fptr  = NULL;
+                                       }
+                               }
+                               
+                               INSERT(result);
+                       }
+#undef STR_SIZE                        
+#undef RLEFT                   
+               }
+       }
        | SHOW_DATE
        {
                if (msginfo->date)
@@ -187,16 +299,71 @@ special:
        | SHOW_FIRST_NAME
        {
                if (msginfo->fromname) {
-                       gchar * p;
-                       gchar * str;
+                       guchar *p;
+                       gchar *str;
+
+                       p = strchr(msginfo->fromname, ',');
+                       if (p != NULL) {
+                               /* fromname is like "Duck, Donald" */
+                               p++;
+                               while (*p && isspace(*p)) p++;
+                               str = alloca(strlen(p) + 1);
+                               if (str != NULL) {
+                                       strcpy(str, p);
+                                       INSERT(str);
+                               }
+                       } else {
+                               /* fromname is like "Donald Duck" */
+                               str = alloca(strlen(msginfo->fromname) + 1);
+                               if (str != NULL) {
+                                       strcpy(str, msginfo->fromname);
+                                       p = str;
+                                       while (*p && !isspace(*p)) p++;
+                                       *p = '\0';
+                                       INSERT(str);
+                               }
+                       }
+               }
+       }
+       | SHOW_LAST_NAME
+        {
+                /* This probably won't work together very well with Middle
+                 names and the like - thth */
+               if (msginfo->fromname) {
+                       gchar *p;
+                       gchar *str;
 
                        str = alloca(strlen(msginfo->fromname) + 1);
                        if (str != NULL) {
                                strcpy(str, msginfo->fromname);
-                               p = str;
-                               while (*p && !isspace(*p)) p++;
-                               *p = '\0';
-                               INSERT(str);
+                               p = strchr(str, ',');
+                               if (p != NULL) {
+                                       /* fromname is like "Duck, Donald" */
+                                       *p = '\0';
+                                       INSERT(str);
+                               } else {
+                                       /* fromname is like "Donald Duck" */
+                                       p = str;
+                                       while (*p && !isspace(*p)) p++;
+                                       if (*p) {
+                                           /* We found a space. Get first 
+                                            none-space char and insert
+                                            rest of string from there. */
+                                           while (*p && isspace(*p)) p++;
+                                           if (*p) {
+                                               INSERT(p);
+                                           } else {
+                                               /* If there is no none-space 
+                                                char, just insert whole 
+                                                fromname. */
+                                               INSERT(str);
+                                           }
+                                       } else {
+                                           /* If there is no space, just 
+                                            insert whole fromname. */
+                                           INSERT(str);
+                                       }
+                               }
                        }
                }
        }
@@ -205,8 +372,8 @@ special:
 #define MAX_SENDER_INITIAL 20
                if (msginfo->fromname) {
                        gchar tmp[MAX_SENDER_INITIAL];
-                       gchar * p;      
-                       gchar * cur;
+                       guchar *p;
+                       gchar *cur;
                        gint len = 0;
 
                        p = msginfo->fromname;
@@ -214,12 +381,11 @@ special:
                        while (*p) {
                                if (*p && isalnum(*p)) {
                                        *cur = toupper(*p);
-                                               cur ++;
-                                       len ++;
+                                               cur++;
+                                       len++;
                                        if (len >= MAX_SENDER_INITIAL - 1)
                                                break;
-                               }
-                               else
+                               } else
                                        break;
                                while (*p && !isseparator(*p)) p++;
                                while (*p && isseparator(*p)) p++;
@@ -254,34 +420,104 @@ special:
        }
        | SHOW_REFERENCES
        {
-               if (msginfo->references)
-                       INSERT(msginfo->references);
+               /* if (msginfo->references)
+                       INSERT(msginfo->references); */
        }
        | SHOW_MESSAGE
        {
-               gchar buf[BUFFSIZE];
-               FILE * fp;
-
-               if ((fp = procmime_get_text_part(msginfo)) == NULL)
-                       g_warning(_("Can't get text part\n"));
-               while (fgets(buf, sizeof(buf), fp) != NULL) {
-                       INSERT(buf);
+               if (msginfo->folder || body) {
+                       gchar buf[BUFFSIZE];
+                       FILE *fp;
+
+                       if (body)
+                               fp = str_open_as_stream(body);
+                       else
+                               fp = procmime_get_first_text_content(msginfo);
+
+                       if (fp == NULL)
+                               g_warning("Can't get text part\n");
+                       else {
+                               while (fgets(buf, sizeof(buf), fp) != NULL) {
+                                       strcrchomp(buf);
+                                       INSERT(buf);
+                               }
+                               fclose(fp);
+                       }
                }
-               fclose(fp);
        }
        | SHOW_QUOTED_MESSAGE
        {
-               gchar buf[BUFFSIZE];
-               FILE * fp;
+               if (msginfo->folder || body) {
+                       gchar buf[BUFFSIZE];
+                       FILE *fp;
+
+                       if (body)
+                               fp = str_open_as_stream(body);
+                       else
+                               fp = procmime_get_first_text_content(msginfo);
+
+                       if (fp == NULL)
+                               g_warning("Can't get text part\n");
+                       else {
+                               while (fgets(buf, sizeof(buf), fp) != NULL) {
+                                       strcrchomp(buf);
+                                       if (quote_str)
+                                               INSERT(quote_str);
+                                       INSERT(buf);
+                               }
+                               fclose(fp);
+                       }
+               }
+       }
+       | SHOW_MESSAGE_NO_SIGNATURE
+       {
+               if (msginfo->folder || body) {
+                       gchar buf[BUFFSIZE];
+                       FILE *fp;
+
+                       if (body)
+                               fp = str_open_as_stream(body);
+                       else
+                               fp = procmime_get_first_text_content(msginfo);
+
+                       if (fp == NULL)
+                               g_warning("Can't get text part\n");
+                       else {
+                               while (fgets(buf, sizeof(buf), fp) != NULL) {
+                                       strcrchomp(buf);
+                                       if (strncmp(buf, "-- \n", 4) == 0)
+                                               break;
+                                       INSERT(buf);
+                               }
+                               fclose(fp);
+                       }
+               }
+       }
+       | SHOW_QUOTED_MESSAGE_NO_SIGNATURE
+       {
+               if (msginfo->folder || body) {
+                       gchar buf[BUFFSIZE];
+                       FILE *fp;
 
-               if ((fp = procmime_get_text_part(msginfo)) == NULL)
-                       g_warning(_("Can't get text part\n"));
-               while (fgets(buf, sizeof(buf), fp) != NULL) {
-                       if (quote_str)
-                               INSERT(quote_str);
-                       INSERT(buf);
+                       if (body)
+                               fp = str_open_as_stream(body);
+                       else
+                               fp = procmime_get_first_text_content(msginfo);
+
+                       if (fp == NULL)
+                               g_warning("Can't get text part\n");
+                       else {
+                               while (fgets(buf, sizeof(buf), fp) != NULL) {
+                                       strcrchomp(buf);
+                                       if (strncmp(buf, "-- \n", 4) == 0)
+                                               break;
+                                       if (quote_str)
+                                               INSERT(quote_str);
+                                       INSERT(buf);
+                               }
+                               fclose(fp);
+                       }
                }
-               fclose(fp);
        }
        | SHOW_BACKSLASH
        {
@@ -299,13 +535,21 @@ special:
        {
                INSERT("?");
        }
+       | SHOW_PIPE
+       {
+               INSERT("|");
+       }
        | SHOW_OPARENT
        {
-               INSERT("(");
+               INSERT("{");
        }
        | SHOW_CPARENT
        {
-               INSERT(")");
+               INSERT("}");
+       }
+       | SET_CURSOR_POS
+       {
+               cursor_pos = bufsize;
        };
 
 query:
@@ -375,9 +619,39 @@ query:
        }
        | QUERY_REFERENCES
        {
-               add_visibility(msginfo->references != NULL);
+               /* add_visibility(msginfo->references != NULL); */
        }
        OPARENT quote_fmt CPARENT
        {
                remove_visibility();
        };
+
+insert:
+       INSERT_FILE OPARENT string CPARENT
+       {
+               {
+                       FILE *file;
+                       char buffer[256];
+                       
+                       if((file = fopen($3, "rb")) != NULL) {
+                               while(fgets(buffer, sizeof(buffer), file)) {
+                                       INSERT(buffer);
+                               }
+                               fclose(file);
+                       }
+               }
+       }
+       | INSERT_PROGRAMOUTPUT OPARENT string CPARENT
+       {
+               {
+                       FILE *file;
+                       char buffer[256];
+
+                       if((file = popen($3, "r")) != NULL) {
+                               while(fgets(buffer, sizeof(buffer), file)) {
+                                       INSERT(buffer);
+                               }
+                               fclose(file);
+                       }
+               }
+       };