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Bug 1571481 - Improve multipart/alternative.

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w/ Fixup for 1464056 - Follow-up: rename pref to align with mailnews.p7m_external (which was already in 52.x but missing a single line)

Tag #1311
This commit is contained in:
Gaming4JC 2019-12-02 23:47:40 -05:00 • committed by Roy Tam
commit 5199f3f3b8
3 changed files with 25 additions and 20 deletions
Download patch file Download diff file Expand all files Collapse all files

38
mailnews/mime/src/mimei.cpp
View file

@ -725,21 +725,20 @@ mime_find_class (const char *content_type, MimeHeaders *hdrs,
else if (!PL_strcasecmp(content_type, APPLICATION_XPKCS7_MIME)
|| !PL_strcasecmp(content_type, APPLICATION_PKCS7_MIME)) {
if (Preferences::GetBool("mailnews.p7m_subparts_external", false) &&
opts->is_child) {
// We do not allow encrypted parts except as top level.
// Allowing them would leak the plain text in case the part is
// cleverly hidden and the decrypted content gets included in
// replies and forwards.
clazz = (MimeObjectClass *)&mimeSuppressedCryptoClass;
return clazz;
}
char *ct = (hdrs ? MimeHeaders_get(hdrs, HEADER_CONTENT_TYPE,
false, false)
: nullptr);
char *st = (ct ? MimeHeaders_get_parameter(ct, "smime-type", NULL, NULL)
: nullptr);
if (Preferences::GetBool("mailnews.p7m_subparts_external", true) &&
opts->is_child) {
// We do not allow encrypted parts except as top level.
// Allowing them would leak the plain text in case the part is
// cleverly hidden and the decrypted content gets included in
// replies and forwards.
clazz = (MimeObjectClass *)&mimeSuppressedCryptoClass;
} else {
char *ct =
hdrs ? MimeHeaders_get(hdrs, HEADER_CONTENT_TYPE, false, false)
: nullptr;
char *st =
ct ? MimeHeaders_get_parameter(ct, "smime-type", nullptr, nullptr)
: nullptr;
/* by default, assume that it is an encrypted message */
clazz = (MimeObjectClass *)&mimeEncryptedCMSClass;
@ -747,9 +746,8 @@ mime_find_class (const char *content_type, MimeHeaders *hdrs,
/* if the smime-type parameter says that it's a certs-only or
compressed file, then show it as an attachment, however
(MimeEncryptedCMS doesn't handle these correctly) */
if (st &&
(!PL_strcasecmp(st, "certs-only") ||
!PL_strcasecmp(st, "compressed-data")))
if (st && (!PL_strcasecmp(st, "certs-only") ||
!PL_strcasecmp(st, "compressed-data")))
clazz = (MimeObjectClass *)&mimeExternalObjectClass;
else {
/* look at the file extension... less reliable, but still covered
@ -763,14 +761,14 @@ mime_find_class (const char *content_type, MimeHeaders *hdrs,
prefBranch->GetBoolPref("mailnews.p7m_external", &p7mExternal);
if (suf &&
((!PL_strcasecmp(suf, ".p7m") && p7mExternal) ||
!PL_strcasecmp(suf, ".p7c") ||
!PL_strcasecmp(suf, ".p7z")))
!PL_strcasecmp(suf, ".p7c") || !PL_strcasecmp(suf, ".p7z")))
clazz = (MimeObjectClass *)&mimeExternalObjectClass;
}
PR_Free(name);
}
PR_Free(st);
PR_Free(ct);
}
}
#endif
/* A few types which occur in the real world and which we would otherwise

4
mailnews/mime/src/mimemalt.cpp
View file

@ -282,6 +282,10 @@ MimeMultipartAlternative_parse_eof (MimeObject *obj, bool abort_p)
static int
MimeMultipartAlternative_create_child(MimeObject *obj)
{
if (obj->options) {
obj->options->is_child = true;
}
MimeMultipart *mult = (MimeMultipart *) obj;
MimeMultipartAlternative *malt = (MimeMultipartAlternative *) obj;

3
mailnews/mime/src/mimesun.cpp
View file

@ -90,6 +90,9 @@ MimeSunAttachment_check_boundary(MimeObject *obj, const char *line,
static int
MimeSunAttachment_create_child(MimeObject *obj)
{
if (obj->options) {
obj->options->is_child = true;
}
MimeMultipart *mult = (MimeMultipart *) obj;
int status = 0;