/*
* Text client functions for reading and writing of messages
*
- * Copyright (c) 1987-2019 by the citadel.org team
+ * Copyright (c) 1987-2020 by the citadel.org team
*
* This program is open source software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 3.
/*
* This is a mini RFC2047 decoder.
* It only handles strings encoded from UTF-8 as Quoted-printable.
+ * We can do this "in place" because the converted string will always be smaller than the source string.
*/
void mini_2047_decode(char *s)
{
- if (!s)
+ if (!s) { // no null strings allowed!
return;
+ }
- char *qstart = strstr(s, "=?UTF-8?Q?");
- if (!qstart)
+ char *qstart = strstr(s, "=?UTF-8?Q?"); // Must start with this string
+ if (!qstart) {
return;
+ }
- char *qend = strstr(s, "?=");
- if (!qend)
+ char *qend = strstr(qstart+10, "?="); // Must end with this string
+ if (!qend) {
return;
+ }
- if (qend <= qstart)
+ if (qend <= qstart) { // And there must be something in between them.
return;
+ }
- strcpy(qstart, &qstart[10]);
- qend -= 10;
+ // The string has qualified for conversion.
- char *p = qstart;
- while (p < qend) {
+ strcpy(qend, ""); // Strip the trailer
+ strcpy(qstart, &qstart[10]); // Strip the header
- if (p[0] == '=') {
+ char *r = qstart; // Pointer to where in the string we're reading
+ char *w = s; // Pointer to where in the string we're writing
+ while(*r) { // Loop through the source string
+ if (r[0] == '=') { // "=" means read a hex character
char ch[3];
- ch[0] = p[1];
- ch[1] = p[2];
- ch[2] = p[3];
+ ch[0] = r[1];
+ ch[1] = r[2];
+ ch[2] = r[3];
int c;
sscanf(ch, "%02x", &c);
- p[0] = c;
- strcpy(&p[1], &p[3]);
- qend -= 2;
+ w[0] = c;
+ r += 3;
+ ++w;
}
-
- if (p[0] == '_') {
- p[0] = ' ';
+ else if (r[0] == '_') { // "_" is a space
+ w[0] = ' ';
+ ++r;
+ ++w;
+ }
+ else { // anything else pass through literally
+ w[0] = r[0];
+ ++r;
+ ++w;
}
-
- ++p;
}
-
- strcpy(qend, &qend[2]);
+ w[0] = 0; // null terminate
}
char ch;
int linelen;
int final_line_is_blank = 0;
-
has_images = 0;
sigcaught = 0;
strftime(now, sizeof now, "%F %R", &thetime);
if (dest) {
fprintf(dest, "%s from %s ", now, message->author);
- if (!IsEmptyStr(message->email)) {
+ if (!message->is_local) {
fprintf(dest, "<%s> ", message->email);
}
}
scr_printf("from ");
color(BRIGHT_CYAN);
scr_printf("%s ", message->author);
- if (!IsEmptyStr(message->email)) {
+ if (!message->is_local) {
color(DIM_WHITE);
scr_printf("<");
color(BRIGHT_BLUE);
color(BRIGHT_CYAN);
mini_2047_decode(message->subject);
scr_printf("%s\n", message->subject);
+
}
}
}