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Only count 'LF' as EOL in pk7_mime.c, this avoids incorrect

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results if CR+LF straddles the line buffer.
This commit is contained in:
Dr. Stephen Henson 2003-06-02 17:53:42 +00:00
parent aff0542844
commit ca82ac1fee
1 changed files with 21 additions and 17 deletions
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38
crypto/pkcs7/pk7_mime.c
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@ -102,7 +102,7 @@ static int mime_param_cmp(const MIME_PARAM * const *a,
static void mime_param_free(MIME_PARAM *param);
static int mime_bound_check(char *line, int linelen, char *bound, int blen);
static int multi_split(BIO *bio, char *bound, STACK_OF(BIO) **ret);
static int iscrlf(char c);
static int strip_eol(char *linebuf, int *plen);
static MIME_HEADER *mime_hdr_find(STACK_OF(MIME_HEADER) *hdrs, char *name);
static MIME_PARAM *mime_param_find(MIME_HEADER *hdr, char *name);
static void mime_hdr_free(MIME_HEADER *hdr);
@ -375,11 +375,7 @@ int SMIME_crlf_copy(BIO *in, BIO *out, int flags)
if(flags & PKCS7_TEXT)
BIO_printf(out, "Content-Type: text/plain\r\n\r\n");
while ((len = BIO_gets(in, linebuf, MAX_SMLEN)) > 0) {
eol = 0;
while(len && iscrlf(linebuf[len - 1])) {
len--;
eol = 1;
}
eol = strip_eol(linebuf, &len);
if (len)
BIO_write(out, linebuf, len);
if(eol) BIO_write(out, "\r\n", 2);
@ -445,11 +441,7 @@ static int multi_split(BIO *bio, char *bound, STACK_OF(BIO) **ret)
return 1;
} else if(part) {
/* Strip CR+LF from linebuf */
next_eol = 0;
while(len && iscrlf(linebuf[len - 1])) {
next_eol = 1;
len--;
}
next_eol = strip_eol(linebuf, &len);
if(first) {
first = 0;
if(bpart) sk_BIO_push(parts, bpart);
@ -464,12 +456,6 @@ static int multi_split(BIO *bio, char *bound, STACK_OF(BIO) **ret)
return 0;
}
static int iscrlf(char c)
{
if(c == '\r' || c == '\n') return 1;
return 0;
}
/* This is the big one: parse MIME header lines up to message body */
#define MIME_INVALID 0
@ -750,3 +736,21 @@ static int mime_bound_check(char *line, int linelen, char *bound, int blen)
}
return 0;
}
static int strip_eol(char *linebuf, int *plen)
{
int len = *plen;
char *p, c;
int is_eol = 0;
p = linebuf + len - 1;
for (p = linebuf + len - 1; len > 0; len--, p--)
{
c = *p;
if (c == '\n')
is_eol = 1;
else if (c != '\r')
break;
}
*plen = len;
return is_eol;
}