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14.1+15.1: Support wildcards in cached hosts file

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Signed-off-by: Tad <tad@spotco.us>
This commit is contained in:
Tad 2021-09-05 16:30:34 -04:00
parent 809a361e07
commit 56e9a75445
3 changed files with 77 additions and 0 deletions
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69
Patches/Common/android_bionic/0001-Wildcard_Hosts.patch Normal file
View File

@ -0,0 +1,69 @@
From 8604fcb3686a74d8f2a0632027525486febd45a4 Mon Sep 17 00:00:00 2001
From: Tom Marshall <tdm.code@gmail.com>
Date: Thu, 16 Jan 2020 13:07:04 -0800
Subject: [PATCH] bionic: Support wildcards in cached hosts file
If an exact name is not found in the hosts file and the host name
contains at least one dot, search for entries of the form "*.domain",
where domain is the portion of the host name after the first dot. If
that is not found, repeat using the domain.
Example: a.b.c.example.com would search for the following in turn:
a.b.c.example.com
*.b.c.example.com
*.c.example.com
*.example.com
*.com
Change-Id: I4b0bb81699151d5b371850daebf785e35ec9b180
---
libc/dns/net/hosts_cache.c | 29 ++++++++++++++++++++++++++++-
1 file changed, 28 insertions(+), 1 deletion(-)
diff --git a/libc/dns/net/hosts_cache.c b/libc/dns/net/hosts_cache.c
index deafb78b73..5038986be6 100644
--- a/libc/dns/net/hosts_cache.c
+++ b/libc/dns/net/hosts_cache.c
@@ -121,7 +121,7 @@ static int cmp_hcent_name(const void *a, const void *b)
return hstrcmp(na, nb);
}
-static struct hcent *_hcfindname(const char *name)
+static struct hcent *_hcfindname_exact(const char *name)
{
size_t first, last, mid;
struct hcent *cur = NULL;
@@ -162,6 +162,33 @@ static struct hcent *_hcfindname(const char *name)
return cur;
}
+static struct hcent *_hcfindname(const char *name)
+{
+ struct hcent *ent;
+ char namebuf[MAX_HOSTLEN];
+ char *p;
+ char *dot;
+
+ ent = _hcfindname_exact(name);
+ if (!ent && strlen(name) < sizeof(namebuf)) {
+ strcpy(namebuf, name);
+ p = namebuf;
+ do {
+ dot = strchr(p, '.');
+ if (!dot)
+ break;
+ if (dot > p) {
+ *(dot - 1) = '*';
+ ent = _hcfindname_exact(dot - 1);
+ }
+ p = dot + 1;
+ }
+ while (!ent);
+ }
+
+ return ent;
+}
+
/*
* Find next name on line, if any.
*

4
Scripts/LineageOS-14.1/Patch.sh
View File

@ -54,6 +54,10 @@ gpgVerifyDirectory "$DOS_PREBUILT_APPS""android_vendor_FDroid_PrebuiltApps/packa
cp -r "$DOS_PREBUILT_APPS""android_vendor_FDroid_PrebuiltApps/." "$DOS_BUILD_BASE""vendor/fdroid_prebuilt/"; #Add the prebuilt apps
cp -r "$DOS_PATCHES_COMMON""android_vendor_divested/." "$DOS_BUILD_BASE""vendor/divested/"; #Add our vendor files
if enterAndClear "bionic"; then
patch -p1 < "$DOS_PATCHES_COMMON/android_bionic/0001-Wildcard_Hosts.patch"; #Support wildcards in cached hosts file (backport from 16.0+)
fi;
if enterAndClear "bootable/recovery"; then
git revert --no-edit 3c0d796b79c7a1ee904e0cef7c0f2e20bf84c237; #Remove sideload cache, breaks with large files
patch -p1 < "$DOS_PATCHES/android_bootable_recovery/0001-Squash_Menus.patch"; #What's a back button?

4
Scripts/LineageOS-15.1/Patch.sh
View File

@ -51,6 +51,10 @@ gpgVerifyDirectory "$DOS_PREBUILT_APPS""android_vendor_FDroid_PrebuiltApps/packa
cp -r "$DOS_PREBUILT_APPS""android_vendor_FDroid_PrebuiltApps/." "$DOS_BUILD_BASE""vendor/fdroid_prebuilt/"; #Add the prebuilt apps
cp -r "$DOS_PATCHES_COMMON""android_vendor_divested/." "$DOS_BUILD_BASE""vendor/divested/"; #Add our vendor files
if enterAndClear "bionic"; then
patch -p1 < "$DOS_PATCHES_COMMON/android_bionic/0001-Wildcard_Hosts.patch"; #Support wildcards in cached hosts file (backport from 16.0+)
fi;
if enterAndClear "bootable/recovery"; then
git revert --no-edit eb98fde70a6e54a25408eb8c626caecf7841c5df; #Remove sideload cache, breaks with large files
git revert --no-edit ac258a4f4c4b4b91640cc477ad1ac125f206db02; #Resurrect dm-verity