1 files changed, 67 insertions, 38 deletions

diff --git a/src/lib/libcrypto/pkcs7/pk7_mime.c b/src/lib/libcrypto/pkcs7/pk7_mime.c
index 086d394270..5d2a97839d 100644
--- a/src/lib/libcrypto/pkcs7/pk7_mime.c
+++ b/src/lib/libcrypto/pkcs7/pk7_mime.c
@@ -3,7 +3,7 @@
  * project 1999.
  */
 /* ====================================================================
- * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.
+ * Copyright (c) 1999-2003 The OpenSSL Project.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
@@ -101,7 +101,7 @@ 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);
@@ -150,9 +150,17 @@ static PKCS7 *B64_read_PKCS7(BIO *bio)
 
 int SMIME_write_PKCS7(BIO *bio, PKCS7 *p7, BIO *data, int flags)
 {
-        char linebuf[MAX_SMLEN];
         char bound[33], c;
         int i;
+        char *mime_prefix, *mime_eol;
+        if (flags & PKCS7_NOOLDMIMETYPE)
+                mime_prefix = "application/pkcs7-";
+        else
+                mime_prefix = "application/x-pkcs7-";
+        if (flags & PKCS7_CRLFEOL)
+                mime_eol = "\r\n";
+        else
+                mime_eol = "\n";
         if((flags & PKCS7_DETACHED) && data) {
         /* We want multipart/signed */
                 /* Generate a random boundary */
@@ -164,34 +172,42 @@ int SMIME_write_PKCS7(BIO *bio, PKCS7 *p7, BIO *data, int flags)
                         bound[i] = c;
                 }
                 bound[32] = 0;
-                BIO_printf(bio, "MIME-Version: 1.0\n");
+                BIO_printf(bio, "MIME-Version: 1.0%s", mime_eol);
                 BIO_printf(bio, "Content-Type: multipart/signed;");
-                BIO_printf(bio, " protocol=\"application/x-pkcs7-signature\";");
-                BIO_printf(bio, " micalg=sha1; boundary=\"----%s\"\n\n", bound);
-                BIO_printf(bio, "This is an S/MIME signed message\n\n");
+                BIO_printf(bio, " protocol=\"%ssignature\";", mime_prefix);
+                BIO_printf(bio, " micalg=sha1; boundary=\"----%s\"%s%s",
+                                                bound, mime_eol, mime_eol);
+                BIO_printf(bio, "This is an S/MIME signed message%s%s",
+                                                mime_eol, mime_eol);
                 /* Now write out the first part */
-                BIO_printf(bio, "------%s\n", bound);
-                if(flags & PKCS7_TEXT) BIO_printf(bio, "Content-Type: text/plain\n\n");
-                while((i = BIO_read(data, linebuf, MAX_SMLEN)) > 0) 
-                                                BIO_write(bio, linebuf, i);
-                BIO_printf(bio, "\n------%s\n", bound);
+                BIO_printf(bio, "------%s%s", bound, mime_eol);
+                SMIME_crlf_copy(data, bio, flags);
+                BIO_printf(bio, "%s------%s%s", mime_eol, bound, mime_eol);
 
                 /* Headers for signature */
 
-                BIO_printf(bio, "Content-Type: application/x-pkcs7-signature; name=\"smime.p7s\"\n");
-                BIO_printf(bio, "Content-Transfer-Encoding: base64\n");
-                BIO_printf(bio, "Content-Disposition: attachment; filename=\"smime.p7s\"\n\n");
+                BIO_printf(bio, "Content-Type: %ssignature;", mime_prefix); 
+                BIO_printf(bio, " name=\"smime.p7s\"%s", mime_eol);
+                BIO_printf(bio, "Content-Transfer-Encoding: base64%s",
+                                                                mime_eol);
+                BIO_printf(bio, "Content-Disposition: attachment;");
+                BIO_printf(bio, " filename=\"smime.p7s\"%s%s",
+                                                        mime_eol, mime_eol);
                 B64_write_PKCS7(bio, p7);
-                BIO_printf(bio,"\n------%s--\n\n", bound);
+                BIO_printf(bio,"%s------%s--%s%s", mime_eol, bound,
+                                                mime_eol, mime_eol);
                 return 1;
         }
         /* MIME headers */
-        BIO_printf(bio, "MIME-Version: 1.0\n");
-        BIO_printf(bio, "Content-Disposition: attachment; filename=\"smime.p7m\"\n");
-        BIO_printf(bio, "Content-Type: application/x-pkcs7-mime; name=\"smime.p7m\"\n");
-        BIO_printf(bio, "Content-Transfer-Encoding: base64\n\n");
+        BIO_printf(bio, "MIME-Version: 1.0%s", mime_eol);
+        BIO_printf(bio, "Content-Disposition: attachment;");
+        BIO_printf(bio, " filename=\"smime.p7m\"%s", mime_eol);
+        BIO_printf(bio, "Content-Type: %smime;", mime_prefix);
+        BIO_printf(bio, " name=\"smime.p7m\"%s", mime_eol);
+        BIO_printf(bio, "Content-Transfer-Encoding: base64%s%s",
+                                                mime_eol, mime_eol);
         B64_write_PKCS7(bio, p7);
-        BIO_printf(bio, "\n");
+        BIO_printf(bio, "%s", mime_eol);
         return 1;
 }
 
@@ -316,12 +332,9 @@ 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(iscrlf(linebuf[len - 1])) {
-                        len--;
-                        eol = 1;
-                }       
-                BIO_write(out, linebuf, len);
+                eol = strip_eol(linebuf, &len);
+                if (len)
+                        BIO_write(out, linebuf, len);
                 if(eol) BIO_write(out, "\r\n", 2);
         }
         return 1;
@@ -364,6 +377,7 @@ static int multi_split(BIO *bio, char *bound, STACK_OF(BIO) **ret)
 {
         char linebuf[MAX_SMLEN];
         int len, blen;
+        int eol = 0, next_eol = 0;
         BIO *bpart = NULL;
         STACK_OF(BIO) *parts;
         char state, part, first;
@@ -383,26 +397,23 @@ static int multi_split(BIO *bio, char *bound, STACK_OF(BIO) **ret)
                         sk_BIO_push(parts, bpart);
                         return 1;
                 } else if(part) {
+                        /* Strip CR+LF from linebuf */
+                        next_eol = strip_eol(linebuf, &len);
                         if(first) {
                                 first = 0;
                                 if(bpart) sk_BIO_push(parts, bpart);
                                 bpart = BIO_new(BIO_s_mem());
-                                
-                        } else BIO_write(bpart, "\r\n", 2);
-                        /* Strip CR+LF from linebuf */
-                        while(iscrlf(linebuf[len - 1])) len--;
-                        BIO_write(bpart, linebuf, len);
+                                BIO_set_mem_eof_return(bpart, 0);
+                        } else if (eol)
+                                BIO_write(bpart, "\r\n", 2);
+                        eol = next_eol;
+                        if (len)
+                                BIO_write(bpart, linebuf, len);
                 }
         }
         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
@@ -683,3 +694,21 @@ 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;
+        }