mirror of
https://github.com/Divested-Mobile/DivestOS-Build.git
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d1e441e4cb
- Adds hosts cache and wildcard support back - Fixes broken hardened malloc enablement patch - Drops FDroidPrivExt, non-functional - Disables captive portal toggle patch, crashes Settings, needs rework - Rebranding work - Attempts to fix no boot animation Signed-off-by: Tad <tad@spotco.us>
73 lines
1.9 KiB
Diff
73 lines
1.9 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Tom Marshall <tdm.code@gmail.com>
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Date: Thu, 16 Jan 2020 13:07:04 -0800
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Subject: [PATCH] DnsResolver: Support wildcards in cached hosts file
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If an exact name is not found in the hosts file and the host name
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contains at least one dot, search for entries of the form "*.domain",
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where domain is the portion of the host name after the first dot. If
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that is not found, repeat using the domain.
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Example: a.b.c.example.com would search for the following in turn:
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a.b.c.example.com
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*.b.c.example.com
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*.c.example.com
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*.example.com
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*.com
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Note: this change is the analogue of the bionic change of the same name.
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Both should be kept in sync.
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Change-Id: I4b0bb81699151d5b371850daebf785e35ec9b170
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---
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hosts_cache.cpp | 29 ++++++++++++++++++++++++++++-
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1 file changed, 28 insertions(+), 1 deletion(-)
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diff --git a/hosts_cache.cpp b/hosts_cache.cpp
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index a40fb40..258eac1 100644
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--- a/hosts_cache.cpp
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+++ b/hosts_cache.cpp
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@@ -126,7 +126,7 @@ static int cmp_hcent_name(const void *a, const void *b)
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return hstrcmp(na, nb);
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}
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-static struct hcent *_hcfindname(const char *name)
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+static struct hcent *_hcfindname_exact(const char *name)
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{
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size_t first, last, mid;
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struct hcent *cur = NULL;
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@@ -167,6 +167,33 @@ found:
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return cur;
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}
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+static struct hcent *_hcfindname(const char *name)
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+{
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+ struct hcent *ent;
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+ char namebuf[MAX_HOSTLEN];
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+ char *p;
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+ char *dot;
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+
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+ ent = _hcfindname_exact(name);
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+ if (!ent && strlen(name) < sizeof(namebuf)) {
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+ strlcpy(namebuf, name, sizeof(namebuf));
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+ p = namebuf;
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+ do {
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+ dot = strchr(p, '.');
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+ if (!dot)
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+ break;
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+ if (dot > p) {
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+ *(dot - 1) = '*';
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+ ent = _hcfindname_exact(dot - 1);
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+ }
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+ p = dot + 1;
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+ }
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+ while (!ent);
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+ }
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+
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+ return ent;
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+}
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+
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/*
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* Find next name on line, if any.
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*
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