rohrpost

commit e564bee669d6957b144d2e36f7938ec3a9a43c75
parent 612b4635f36c5ad16c9c651416a3c85111dce99a
Author: Christoph Lohmann <20h@r-36.net>
Date:   Sun, 28 Oct 2018 18:30:41 +0100

Remove whitespace characters from header values.

Keeping for example newline in headers will break and is unexpected.

Diffstat:
ind.c
 | 
12
++++++++++++
ind.h
 | 
1
+
mime.c
 | 
3
+++

3 files changed, 16 insertions(+), 0 deletions(-)
diff --git a/ind.c b/ind.c
@@ -500,6 +500,18 @@ strisascii(char *str)
 	return 1;
 }
 
+void
+strnormalizespace(char *str)
+{
+	int len, i;
+
+	len = strlen(str);
+	for (i = 0; i < len; i++) {
+		if (isspace(str[i]))
+			str[i] = ' ';
+	}
+}
+
 /*
  * Find a whitespace character in a certain limit. This is used for formatting
  * mail to a certain width.
diff --git a/ind.h b/ind.h
@@ -46,6 +46,7 @@ char *strcsh(char *p, char *chars);
 char *strncsh(char *p, char *chars);
 char *strrlnspn(char *p, char *chars, int limit);
 int strisascii(char *str);
+void strnormalizespace(char *str);
 char *findlimitws(char *str, int limit);
 
 char *mktmpfile(char *prefix, char *suffix, int *fd);
diff --git a/mime.c b/mime.c
@@ -307,6 +307,9 @@ mime_decodeheader(char *value)
 		ret = memdupcat(ret, rlen, extp, strlen(extp)+1);
 	free(work);
 
+	/* Remove any space character, like newline. */
+	strnormalizespace(ret);
+
 	return ret;
 }