volta: process.c@51eb85ae4de4 (annotated)

10 d07309450285 Get the ragel line parser properly tokenizing the input lines. Add a Mahlon E. Smith <mahlon@martini.nu> parents: diff changeset	1	/* vim: set noet nosta sw=4 ts=4 ft=c : */
d07309450285 Get the ragel line parser properly tokenizing the input lines. Add a Mahlon E. Smith <mahlon@martini.nu> parents: diff changeset	2	/*
d07309450285 Get the ragel line parser properly tokenizing the input lines. Add a Mahlon E. Smith <mahlon@martini.nu> parents: diff changeset	3	Copyright (c) 2011, Mahlon E. Smith <mahlon@martini.nu>
d07309450285 Get the ragel line parser properly tokenizing the input lines. Add a Mahlon E. Smith <mahlon@martini.nu> parents: diff changeset	4	All rights reserved.
d07309450285 Get the ragel line parser properly tokenizing the input lines. Add a Mahlon E. Smith <mahlon@martini.nu> parents: diff changeset	5	Redistribution and use in source and binary forms, with or without
d07309450285 Get the ragel line parser properly tokenizing the input lines. Add a Mahlon E. Smith <mahlon@martini.nu> parents: diff changeset	6	modification, are permitted provided that the following conditions are met:
d07309450285 Get the ragel line parser properly tokenizing the input lines. Add a Mahlon E. Smith <mahlon@martini.nu> parents: diff changeset	7
d07309450285 Get the ragel line parser properly tokenizing the input lines. Add a Mahlon E. Smith <mahlon@martini.nu> parents: diff changeset	8	* Redistributions of source code must retain the above copyright
d07309450285 Get the ragel line parser properly tokenizing the input lines. Add a Mahlon E. Smith <mahlon@martini.nu> parents: diff changeset	9	notice, this list of conditions and the following disclaimer.
d07309450285 Get the ragel line parser properly tokenizing the input lines. Add a Mahlon E. Smith <mahlon@martini.nu> parents: diff changeset	10
d07309450285 Get the ragel line parser properly tokenizing the input lines. Add a Mahlon E. Smith <mahlon@martini.nu> parents: diff changeset	11	* Redistributions in binary form must reproduce the above copyright
d07309450285 Get the ragel line parser properly tokenizing the input lines. Add a Mahlon E. Smith <mahlon@martini.nu> parents: diff changeset	12	notice, this list of conditions and the following disclaimer in the
d07309450285 Get the ragel line parser properly tokenizing the input lines. Add a Mahlon E. Smith <mahlon@martini.nu> parents: diff changeset	13	documentation and/or other materials provided with the distribution.
d07309450285 Get the ragel line parser properly tokenizing the input lines. Add a Mahlon E. Smith <mahlon@martini.nu> parents: diff changeset	14
d07309450285 Get the ragel line parser properly tokenizing the input lines. Add a Mahlon E. Smith <mahlon@martini.nu> parents: diff changeset	15	* Neither the name of Mahlon E. Smith nor the names of his
d07309450285 Get the ragel line parser properly tokenizing the input lines. Add a Mahlon E. Smith <mahlon@martini.nu> parents: diff changeset	16	contributors may be used to endorse or promote products derived
d07309450285 Get the ragel line parser properly tokenizing the input lines. Add a Mahlon E. Smith <mahlon@martini.nu> parents: diff changeset	17	from this software without specific prior written permission.
d07309450285 Get the ragel line parser properly tokenizing the input lines. Add a Mahlon E. Smith <mahlon@martini.nu> parents: diff changeset	18
d07309450285 Get the ragel line parser properly tokenizing the input lines. Add a Mahlon E. Smith <mahlon@martini.nu> parents: diff changeset	19	THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND ANY
d07309450285 Get the ragel line parser properly tokenizing the input lines. Add a Mahlon E. Smith <mahlon@martini.nu> parents: diff changeset	20	EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
d07309450285 Get the ragel line parser properly tokenizing the input lines. Add a Mahlon E. Smith <mahlon@martini.nu> parents: diff changeset	21	WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
d07309450285 Get the ragel line parser properly tokenizing the input lines. Add a Mahlon E. Smith <mahlon@martini.nu> parents: diff changeset	22	DISCLAIMED. IN NO EVENT SHALL THE REGENTS AND CONTRIBUTORS BE LIABLE FOR ANY
d07309450285 Get the ragel line parser properly tokenizing the input lines. Add a Mahlon E. Smith <mahlon@martini.nu> parents: diff changeset	23	DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
d07309450285 Get the ragel line parser properly tokenizing the input lines. Add a Mahlon E. Smith <mahlon@martini.nu> parents: diff changeset	24	(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
d07309450285 Get the ragel line parser properly tokenizing the input lines. Add a Mahlon E. Smith <mahlon@martini.nu> parents: diff changeset	25	LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
d07309450285 Get the ragel line parser properly tokenizing the input lines. Add a Mahlon E. Smith <mahlon@martini.nu> parents: diff changeset	26	ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
d07309450285 Get the ragel line parser properly tokenizing the input lines. Add a Mahlon E. Smith <mahlon@martini.nu> parents: diff changeset	27	(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
d07309450285 Get the ragel line parser properly tokenizing the input lines. Add a Mahlon E. Smith <mahlon@martini.nu> parents: diff changeset	28	SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
d07309450285 Get the ragel line parser properly tokenizing the input lines. Add a Mahlon E. Smith <mahlon@martini.nu> parents: diff changeset	29	*/
d07309450285 Get the ragel line parser properly tokenizing the input lines. Add a Mahlon E. Smith <mahlon@martini.nu> parents: diff changeset	30
d07309450285 Get the ragel line parser properly tokenizing the input lines. Add a Mahlon E. Smith <mahlon@martini.nu> parents: diff changeset	31	#include "volta.h"
d07309450285 Get the ragel line parser properly tokenizing the input lines. Add a Mahlon E. Smith <mahlon@martini.nu> parents: diff changeset	32	#include "db.h"
d07309450285 Get the ragel line parser properly tokenizing the input lines. Add a Mahlon E. Smith <mahlon@martini.nu> parents: diff changeset	33
14 51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	34
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	35	/*
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	36	* Given a redirect +line+ from squid, send it to the parser,
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	37	* perform database lookups, and conditonally perform the rewrite.
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	38	*
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	39	*/
10 d07309450285 Get the ragel line parser properly tokenizing the input lines. Add a Mahlon E. Smith <mahlon@martini.nu> parents: diff changeset	40	void
d07309450285 Get the ragel line parser properly tokenizing the input lines. Add a Mahlon E. Smith <mahlon@martini.nu> parents: diff changeset	41	process( char *line )
d07309450285 Get the ragel line parser properly tokenizing the input lines. Add a Mahlon E. Smith <mahlon@martini.nu> parents: diff changeset	42	{
14 51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	43	parsed p_request = parse_request( line ), rule = NULL;
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	44	parsed results[ DB_RESULTS_MAX ] = { NULL }; / array of response matches */
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	45	unsigned int rcount = 0;
10 d07309450285 Get the ragel line parser properly tokenizing the input lines. Add a Mahlon E. Smith <mahlon@martini.nu> parents: diff changeset	46
d07309450285 Get the ragel line parser properly tokenizing the input lines. Add a Mahlon E. Smith <mahlon@martini.nu> parents: diff changeset	47	/* count lines in debugmode */
d07309450285 Get the ragel line parser properly tokenizing the input lines. Add a Mahlon E. Smith <mahlon@martini.nu> parents: diff changeset	48	if ( v.debugmode > 2 ) v.timer.lines++;
d07309450285 Get the ragel line parser properly tokenizing the input lines. Add a Mahlon E. Smith <mahlon@martini.nu> parents: diff changeset	49
14 51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	50	/* If request parsing failed, return a blank line to squid
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	51	to allow the request to pass through unmolested. */
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	52	if ( p_request == NULL ) {
13 23a242d7b7fa 1st iteration of volta actually doing something. Process the request, Mahlon E. Smith <mahlon@laika.com> parents: 10 diff changeset	53	out( "\n" );
14 51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	54	finish_parsed( p_request );
10 d07309450285 Get the ragel line parser properly tokenizing the input lines. Add a Mahlon E. Smith <mahlon@martini.nu> parents: diff changeset	55	return;
d07309450285 Get the ragel line parser properly tokenizing the input lines. Add a Mahlon E. Smith <mahlon@martini.nu> parents: diff changeset	56	}
d07309450285 Get the ragel line parser properly tokenizing the input lines. Add a Mahlon E. Smith <mahlon@martini.nu> parents: diff changeset	57
14 51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	58	/*
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	59	* Main rewrite logic.
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	60	*
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	61	* First, try and match the host exactly.
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	62	*
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	63	* Second, match the TLD of the host, so separate rules aren't needed for
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	64	* every possible subdomain of one particular domain.
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	65	*
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	66	* Finally, look for '*', if for some reason the rules provided don't care to
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	67	* match specific hosts, and instead just match on any path.
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	68	*
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	69	* If DB matches are found at any step above, the rules are tried in order
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	70	* to attempt a match against the path. Exact string match attempted
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	71	* first, then fallback to regexp.
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	72	*
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	73	* First rule match wins, and elements of the URL are rewritten based on
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	74	* what is present in the rule -- any missing parts just use the original
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	75	* URL element. (this way, you can rewrite just the host and leave the
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	76	* path intact, or redir to https, for example.)
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	77	*
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	78	*/
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	79	rcount = find_records( p_request->host, results );
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	80	rule = find_matching_rule( results, rcount, p_request );
13 23a242d7b7fa 1st iteration of volta actually doing something. Process the request, Mahlon E. Smith <mahlon@laika.com> parents: 10 diff changeset	81
14 51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	82	if ( rule == NULL ) {
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	83	reset_results( results, rcount );
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	84	rcount = find_records( p_request->tld, results );
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	85	rule = find_matching_rule( results, rcount, p_request );
13 23a242d7b7fa 1st iteration of volta actually doing something. Process the request, Mahlon E. Smith <mahlon@laika.com> parents: 10 diff changeset	86	}
23a242d7b7fa 1st iteration of volta actually doing something. Process the request, Mahlon E. Smith <mahlon@laika.com> parents: 10 diff changeset	87
14 51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	88	if ( rule == NULL ) {
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	89	reset_results( results, rcount );
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	90	rcount = find_records( "*", results );
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	91	rule = find_matching_rule( results, rcount, p_request );
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	92	}
10 d07309450285 Get the ragel line parser properly tokenizing the input lines. Add a Mahlon E. Smith <mahlon@martini.nu> parents: diff changeset	93
14 51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	94	/* no matching rule still? no need to rewrite anything. */
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	95	if ( rule == NULL ) {
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	96	out( "\n" );
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	97	}
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	98	/* otherwise, perform the rewrite */
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	99	else {
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	100	rewrite( p_request, rule );
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	101	}
13 23a242d7b7fa 1st iteration of volta actually doing something. Process the request, Mahlon E. Smith <mahlon@laika.com> parents: 10 diff changeset	102
14 51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	103	reset_results( results, rcount );
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	104	finish_parsed( p_request );
10 d07309450285 Get the ragel line parser properly tokenizing the input lines. Add a Mahlon E. Smith <mahlon@martini.nu> parents: diff changeset	105	return;
d07309450285 Get the ragel line parser properly tokenizing the input lines. Add a Mahlon E. Smith <mahlon@martini.nu> parents: diff changeset	106	}
d07309450285 Get the ragel line parser properly tokenizing the input lines. Add a Mahlon E. Smith <mahlon@martini.nu> parents: diff changeset	107
14 51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	108
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	109	/*
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	110	* Output a rewritten URL for squid.
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	111	*
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	112	*/
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	113	void
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	114	rewrite( parsed request, parsed rule )
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	115	{
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	116	if ( rule == NULL \|\| v.debugmode >= 5 ) return;
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	117
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	118	if ( rule->redir ) printf( "%s:", rule->redir );
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	119	printf( "%s%s", (rule->scheme ? rule->scheme : request->scheme), rule->host );
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	120	if ( rule->port ) printf( ":%s", rule->port );
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	121	printf( "%s", rule->path ? rule->path : request->path );
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	122
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	123	printf("\n");
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	124	return;
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	125	}
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	126
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	127
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	128	/*
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	129	* Search through a result set, and return the first
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	130	* matching path (or NULL).
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	131	*
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	132	*/
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	133	parsed *
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	134	find_matching_rule( parsed *results, unsigned int resultcount, parsed p_request )
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	135	{
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	136	unsigned int i = 0;
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	137	int re_rv;
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	138	regex_t re;
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	139	char re_err[128];
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	140	parsed *rule = NULL;
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	141
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	142	if ( resultcount == 0 \|\| p_request->path == NULL ) return( NULL );
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	143
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	144	for ( i = 0; i < resultcount; i++ ) {
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	145	/* quick comparison */
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	146	if ( (strcasecmp( results[i]->path_re, p_request->path ) == 0) \|\|
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	147	(strcmp( results[i]->path_re, "*" ) == 0) ) {
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	148	debug( 4, LOC, "Rule %d match (non regexp)\n", i+1 );
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	149	rule = results[i];
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	150	break;
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	151	}
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	152
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	153	/* compile the regexp */
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	154	if ( (re_rv = regcomp( &re, results[i]->path_re, REG_EXTENDED \| REG_NOSUB )) != 0 ) {
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	155	regerror( re_rv, &re, re_err, 128 );
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	156	debug( 4, LOC, "Invalid regex: \"%s\": %s\n", results[i]->path_re, re_err );
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	157	regfree( &re );
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	158	continue;
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	159	}
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	160
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	161	/* compare! */
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	162	if ( (regexec( &re, p_request->path, 0, NULL, 0 )) == 0 ) {
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	163	debug( 4, LOC, "Rule %d match (regexp)\n", i+1 );
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	164	rule = results[i];
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	165	regfree( &re );
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	166	break;
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	167	}
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	168	}
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	169
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	170	return( rule );
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	171	}
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	172
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	173
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	174	/*
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	175	* Clear the results array and free memory.
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	176	*
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	177	*/
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	178	void
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	179	reset_results( parsed **results, unsigned int count )
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	180	{
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	181	unsigned int i = 0;
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	182
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	183	for ( ; i < count && i < DB_RESULTS_MAX; i++ ) finish_parsed( results[i] );
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	184	memset( results, 0, sizeof(results) );
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	185
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	186	return;
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	187	}
51eb85ae4de4 There isn't a fast way to look up ( value exists or null ) for every Mahlon E. Smith <mahlon@martini.nu> parents: 13 diff changeset	188

author	Mahlon E. Smith <mahlon@martini.nu>
	Fri, 04 Nov 2011 20:34:28 -0700
changeset 14	51eb85ae4de4
parent 13	23a242d7b7fa
child 15	2706fc514dea
permissions	-rw-r--r--