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git/urlmatch.h
Junio C Hamano 836b6fb5a5 config: add generic callback wrapper to parse section.<url>.key
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>
2013-07-31 14:58:42 -07:00

54 lines
2 KiB
C

#ifndef URL_MATCH_H
#include "string-list.h"
struct url_info {
/* normalized url on success, must be freed, otherwise NULL */
char *url;
/* if !url, a brief reason for the failure, otherwise NULL */
const char *err;
/* the rest of the fields are only set if url != NULL */
size_t url_len; /* total length of url (which is now normalized) */
size_t scheme_len; /* length of scheme name (excluding final :) */
size_t user_off; /* offset into url to start of user name (0 => none) */
size_t user_len; /* length of user name; if user_off != 0 but
user_len == 0, an empty user name was given */
size_t passwd_off; /* offset into url to start of passwd (0 => none) */
size_t passwd_len; /* length of passwd; if passwd_off != 0 but
passwd_len == 0, an empty passwd was given */
size_t host_off; /* offset into url to start of host name (0 => none) */
size_t host_len; /* length of host name; this INCLUDES any ':portnum';
* file urls may have host_len == 0 */
size_t port_len; /* if a portnum is present (port_len != 0), it has
* this length (excluding the leading ':') at the
* end of the host name (always 0 for file urls) */
size_t path_off; /* offset into url to the start of the url path;
* this will always point to a '/' character
* after the url has been normalized */
size_t path_len; /* length of path portion excluding any trailing
* '?...' and '#...' portion; will always be >= 1 */
};
extern char *url_normalize(const char *, struct url_info *);
extern int match_urls(const struct url_info *url, const struct url_info *url_prefix, int *exactusermatch);
struct urlmatch_item {
size_t matched_len;
char user_matched;
};
struct urlmatch_config {
struct string_list vars;
struct url_info url;
const char *section;
const char *key;
void *cb;
int (*collect_fn)(const char *var, const char *value, void *cb);
int (*cascade_fn)(const char *var, const char *value, void *cb);
};
extern int urlmatch_config_entry(const char *var, const char *value, void *cb);
#endif /* URL_MATCH_H */