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No external callers exist.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Otherwise, callers must do so or risk triggering warnings
-Wchar-subscript (and rightfully so; a signed char might
cause us to use a bogus negative index into the
hexval_table).
While we are dropping the now-unnecessary casts from the
caller in urlmatch.c, we can get rid of similar casts in
actually parsing the hex by using the hexval() helper, which
implicitly casts to unsigned (but note that we cannot
implement isxdigit in terms of hexval(), as it also casts
its return value to unsigned).
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The skip_prefix() function returns a pointer to the content
past the prefix, or NULL if the prefix was not found. While
this is nice and simple, in practice it makes it hard to use
for two reasons:
1. When you want to conditionally skip or keep the string
as-is, you have to introduce a temporary variable.
For example:
tmp = skip_prefix(buf, "foo");
if (tmp)
buf = tmp;
2. It is verbose to check the outcome in a conditional, as
you need extra parentheses to silence compiler
warnings. For example:
if ((cp = skip_prefix(buf, "foo"))
/* do something with cp */
Both of these make it harder to use for long if-chains, and
we tend to use starts_with() instead. However, the first line
of "do something" is often to then skip forward in buf past
the prefix, either using a magic constant or with an extra
strlen(3) (which is generally computed at compile time, but
means we are repeating ourselves).
This patch refactors skip_prefix() to return a simple boolean,
and to provide the pointer value as an out-parameter. If the
prefix is not found, the out-parameter is untouched. This
lets you write:
if (skip_prefix(arg, "foo ", &arg))
do_foo(arg);
else if (skip_prefix(arg, "bar ", &arg))
do_bar(arg);
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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When append_normalized_escapes is called, its internal strbuf_add* calls can
cause the strbuf's buf to be reallocated changing the value of the buf pointer.
Do not use the strbuf buf pointer from before any append_normalized_escapes
calls afterwards. Instead recompute the needed pointer.
Signed-off-by: Thomas Rast <trast@inf.ethz.ch>
Signed-off-by: Kyle J. McKay <mackyle@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Existing configuration parsing functions (e.g. http_options() in
http.c) know how to parse two-level configuration variable names.
We would like to exploit them and parse something like this:
[http]
sslVerify = true
[http "https://weak.example.com"]
sslVerify = false
and pretend as if http.sslVerify were set to false when talking to
"https://weak.example.com/path".
Introduce `urlmatch_config_entry()` wrapper that:
- is called with the target URL (e.g. "https://weak.example.com/path"),
and the two-level variable parser (e.g. `http_options`);
- uses `url_normalize()` and `match_urls()` to see if configuration
data matches the target URL; and
- calls the traditional two-level configuration variable parser
only for the configuration data whose <url> part matches the
target URL (and if there are multiple matches, only do so if the
current match is a better match than the ones previously seen).
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Some http.* configuration variables need to take values customized
for the URL we are talking to. We may want to set http.sslVerify to
true in general but to false only for a certain site, for example,
with a configuration file like this:
[http]
sslVerify = true
[http "https://weak.example.com"]
sslVerify = false
and let the configuration machinery pick up the latter only when
talking to "https://weak.example.com". The latter needs to kick in
not only when the URL is exactly "https://weak.example.com", but
also is anything that "match" it, e.g.
https://weak.example.com/test
https://me@weak.example.com/test
The <url> in the configuration key consists of the following parts,
and is considered a match to the URL we are attempting to access
under certain conditions:
. Scheme (e.g., `https` in `https://example.com/`). This field
must match exactly between the config key and the URL.
. Host/domain name (e.g., `example.com` in `https://example.com/`).
This field must match exactly between the config key and the URL.
. Port number (e.g., `8080` in `http://example.com:8080/`). This
field must match exactly between the config key and the URL.
Omitted port numbers are automatically converted to the correct
default for the scheme before matching.
. Path (e.g., `repo.git` in `https://example.com/repo.git`). The
path field of the config key must match the path field of the
URL either exactly or as a prefix of slash-delimited path
elements. A config key with path `foo/` matches URL path
`foo/bar`. A prefix can only match on a slash (`/`) boundary.
Longer matches take precedence (so a config key with path
`foo/bar` is a better match to URL path `foo/bar` than a config
key with just path `foo/`).
. User name (e.g., `me` in `https://me@example.com/repo.git`). If
the config key has a user name, it must match the user name in
the URL exactly. If the config key does not have a user name,
that config key will match a URL with any user name (including
none), but at a lower precedence than a config key with a user
name.
Longer matches take precedence over shorter matches.
This step adds two helper functions `url_normalize()` and
`match_urls()` to help implement the above semantics. The
normalization rules are based on RFC 3986 and should result in any
two equivalent urls being a match.
Signed-off-by: Kyle J. McKay <mackyle@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Junio C Hamano
Jeff King
Thomas Rast
Kyle J. McKay