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    /*	$OpenBSD: table_static.c,v 1.17 2017/08/29 07:37:11 eric Exp $	*/  | 
    
    
    2  | 
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    3  | 
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    /*  | 
    
    
    4  | 
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     * Copyright (c) 2013 Eric Faurot <eric@openbsd.org>  | 
    
    
    5  | 
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     * Copyright (c) 2012 Gilles Chehade <gilles@poolp.org>  | 
    
    
    6  | 
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     *  | 
    
    
    7  | 
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     * Permission to use, copy, modify, and distribute this software for any  | 
    
    
    8  | 
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     * purpose with or without fee is hereby granted, provided that the above  | 
    
    
    9  | 
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     * copyright notice and this permission notice appear in all copies.  | 
    
    
    10  | 
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     *  | 
    
    
    11  | 
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     * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES  | 
    
    
    12  | 
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     * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF  | 
    
    
    13  | 
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     * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR  | 
    
    
    14  | 
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     * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES  | 
    
    
    15  | 
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     * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN  | 
    
    
    16  | 
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     * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF  | 
    
    
    17  | 
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     * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.  | 
    
    
    18  | 
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     */  | 
    
    
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    20  | 
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    #include <sys/types.h>  | 
    
    
    21  | 
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    #include <sys/queue.h>  | 
    
    
    22  | 
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    #include <sys/tree.h>  | 
    
    
    23  | 
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    #include <sys/socket.h>  | 
    
    
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    25  | 
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    #include <netinet/in.h>  | 
    
    
    26  | 
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    #include <arpa/inet.h>  | 
    
    
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    28  | 
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    #include <ctype.h>  | 
    
    
    29  | 
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    #include <err.h>  | 
    
    
    30  | 
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    #include <event.h>  | 
    
    
    31  | 
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    #include <fcntl.h>  | 
    
    
    32  | 
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    #include <imsg.h>  | 
    
    
    33  | 
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    #include <stdio.h>  | 
    
    
    34  | 
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    #include <stdlib.h>  | 
    
    
    35  | 
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    #include <limits.h>  | 
    
    
    36  | 
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    #include <string.h>  | 
    
    
    37  | 
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    38  | 
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    #include "smtpd.h"  | 
    
    
    39  | 
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    #include "log.h"  | 
    
    
    40  | 
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    41  | 
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    /* static backend */  | 
    
    
    42  | 
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    static int table_static_config(struct table *);  | 
    
    
    43  | 
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    static int table_static_update(struct table *);  | 
    
    
    44  | 
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    static void *table_static_open(struct table *);  | 
    
    
    45  | 
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    static int table_static_lookup(void *, struct dict *, const char *,  | 
    
    
    46  | 
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        enum table_service, union lookup *);  | 
    
    
    47  | 
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    static int table_static_fetch(void *, struct dict *, enum table_service,  | 
    
    
    48  | 
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        union lookup *);  | 
    
    
    49  | 
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    static void  table_static_close(void *);  | 
    
    
    50  | 
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    51  | 
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    struct table_backend table_backend_static = { | 
    
    
    52  | 
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    	K_ALIAS|K_CREDENTIALS|K_DOMAIN|K_NETADDR|K_USERINFO|  | 
    
    
    53  | 
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    	K_SOURCE|K_MAILADDR|K_ADDRNAME|K_MAILADDRMAP,  | 
    
    
    54  | 
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    	table_static_config,  | 
    
    
    55  | 
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    	table_static_open,  | 
    
    
    56  | 
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    	table_static_update,  | 
    
    
    57  | 
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    	table_static_close,  | 
    
    
    58  | 
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    	table_static_lookup,  | 
    
    
    59  | 
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    	table_static_fetch  | 
    
    
    60  | 
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    };  | 
    
    
    61  | 
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    62  | 
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    static struct keycmp { | 
    
    
    63  | 
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    	enum table_service	service;  | 
    
    
    64  | 
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    	int		       (*func)(const char *, const char *);  | 
    
    
    65  | 
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    } keycmp[] = { | 
    
    
    66  | 
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    	{ K_DOMAIN, table_domain_match }, | 
    
    
    67  | 
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    	{ K_NETADDR, table_netaddr_match }, | 
    
    
    68  | 
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    	{ K_MAILADDR, table_mailaddr_match } | 
    
    
    69  | 
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    };  | 
    
    
    70  | 
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    71  | 
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    72  | 
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    static int  | 
    
    
    73  | 
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    table_static_config(struct table *t)  | 
    
    
    74  | 
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    { | 
    
    
    75  | 
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    	FILE	*fp;  | 
    
    
    76  | 
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    	char	*buf = NULL, *p;  | 
    
    
    77  | 
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    	int	 lineno = 0;  | 
    
    
    78  | 
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    	size_t	 sz = 0;  | 
    
    
    79  | 
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    	ssize_t	 flen;  | 
    
    
    80  | 
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    	char	*keyp;  | 
    
    
    81  | 
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    	char	*valp;  | 
    
    
    82  | 
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    	size_t	 ret = 0;  | 
    
    
    83  | 
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    84  | 
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    	/* no config ? ok */  | 
    
    
    85  | 
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    	if (*t->t_config == '\0')  | 
    
    
    86  | 
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    		return 1;  | 
    
    
    87  | 
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    88  | 
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    	if ((fp = fopen(t->t_config, "r")) == NULL) { | 
    
    
    89  | 
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    		log_warn("warn: Table \"%s\"", t->t_config); | 
    
    
    90  | 
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    		return 0;  | 
    
    
    91  | 
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    	}  | 
    
    
    92  | 
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    93  | 
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    	while ((flen = getline(&buf, &sz, fp)) != -1) { | 
    
    
    94  | 
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    		lineno++;  | 
    
    
    95  | 
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    		if (buf[flen - 1] == '\n')  | 
    
    
    96  | 
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    			buf[--flen] = '\0';  | 
    
    
    97  | 
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    98  | 
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    		keyp = buf;  | 
    
    
    99  | 
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    		while (isspace((unsigned char)*keyp)) { | 
    
    
    100  | 
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    			++keyp;  | 
    
    
    101  | 
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    			--flen;  | 
    
    
    102  | 
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    		}  | 
    
    
    103  | 
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    		if (*keyp == '\0')  | 
    
    
    104  | 
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    			continue;  | 
    
    
    105  | 
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    		while (isspace((unsigned char)keyp[flen - 1]))  | 
    
    
    106  | 
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    			keyp[--flen] = '\0';  | 
    
    
    107  | 
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    		if (*keyp == '#') { | 
    
    
    108  | 
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    			if (t->t_type == T_NONE) { | 
    
    
    109  | 
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    				keyp++;  | 
    
    
    110  | 
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    				while (isspace((unsigned char)*keyp))  | 
    
    
    111  | 
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    					++keyp;  | 
    
    
    112  | 
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    				if (!strcmp(keyp, "@list"))  | 
    
    
    113  | 
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    					t->t_type = T_LIST;  | 
    
    
    114  | 
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    			}  | 
    
    
    115  | 
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    			continue;  | 
    
    
    116  | 
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    		}  | 
    
    
    117  | 
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    118  | 
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    		if (t->t_type == T_NONE) { | 
    
    
    119  | 
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    			for (p = keyp; *p; p++) { | 
    
    
    120  | 
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    				if (*p == ' ' || *p == '\t' || *p == ':') { | 
    
    
    121  | 
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    					t->t_type = T_HASH;  | 
    
    
    122  | 
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    					break;  | 
    
    
    123  | 
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    				}  | 
    
    
    124  | 
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    			}  | 
    
    
    125  | 
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    			if (t->t_type == T_NONE)  | 
    
    
    126  | 
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    				t->t_type = T_LIST;  | 
    
    
    127  | 
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    		}  | 
    
    
    128  | 
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    129  | 
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    		if (t->t_type == T_LIST) { | 
    
    
    130  | 
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    			table_add(t, keyp, NULL);  | 
    
    
    131  | 
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    			continue;  | 
    
    
    132  | 
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    		}  | 
    
    
    133  | 
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    134  | 
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    		/* T_HASH */  | 
    
    
    135  | 
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    		valp = keyp;  | 
    
    
    136  | 
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    		strsep(&valp, " \t:");  | 
    
    
    137  | 
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    		if (valp) { | 
    
    
    138  | 
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    			while (*valp) { | 
    
    
    139  | 
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    				if (!isspace((unsigned char)*valp) &&  | 
    
    
    140  | 
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    				    !(*valp == ':' &&  | 
    
    
    141  | 
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    				    isspace((unsigned char)*(valp + 1))))  | 
    
    
    142  | 
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    					break;  | 
    
    
    143  | 
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    				++valp;  | 
    
    
    144  | 
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    			}  | 
    
    
    145  | 
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    			if (*valp == '\0')  | 
    
    
    146  | 
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    				valp = NULL;  | 
    
    
    147  | 
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    		}  | 
    
    
    148  | 
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    		if (valp == NULL) { | 
    
    
    149  | 
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    			log_warnx("%s: invalid map entry line %d", t->t_config, | 
    
    
    150  | 
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    			    lineno);  | 
    
    
    151  | 
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    			goto end;  | 
    
    
    152  | 
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    		}  | 
    
    
    153  | 
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    154  | 
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    		table_add(t, keyp, valp);  | 
    
    
    155  | 
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    	}  | 
    
    
    156  | 
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    157  | 
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    	if (ferror(fp)) { | 
    
    
    158  | 
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    		log_warn("%s: getline", t->t_config); | 
    
    
    159  | 
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    		goto end;  | 
    
    
    160  | 
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    	}  | 
    
    
    161  | 
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    162  | 
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    	/* Accept empty alias files; treat them as hashes */  | 
    
    
    163  | 
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    	if (t->t_type == T_NONE && t->t_backend->services & K_ALIAS)  | 
    
    
    164  | 
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    	    t->t_type = T_HASH;  | 
    
    
    165  | 
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    166  | 
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    	ret = 1;  | 
    
    
    167  | 
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    end:  | 
    
    
    168  | 
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    	free(buf);  | 
    
    
    169  | 
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    	fclose(fp);  | 
    
    
    170  | 
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    	return ret;  | 
    
    
    171  | 
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    }  | 
    
    
    172  | 
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    173  | 
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    static int  | 
    
    
    174  | 
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    table_static_update(struct table *table)  | 
    
    
    175  | 
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    { | 
    
    
    176  | 
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    	struct table	*t;  | 
    
    
    177  | 
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    	void		*p = NULL;  | 
    
    
    178  | 
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    179  | 
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    	/* no config ? ok */  | 
    
    
    180  | 
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    	if (table->t_config[0] == '\0')  | 
    
    
    181  | 
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    		goto ok;  | 
    
    
    182  | 
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    183  | 
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    	t = table_create("static", table->t_name, "update", table->t_config); | 
    
    
    184  | 
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    	if (!table_config(t))  | 
    
    
    185  | 
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    		goto err;  | 
    
    
    186  | 
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    187  | 
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    	/* replace former table, frees t */  | 
    
    
    188  | 
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    	while (dict_poproot(&table->t_dict, (void **)&p))  | 
    
    
    189  | 
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    		free(p);  | 
    
    
    190  | 
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    	dict_merge(&table->t_dict, &t->t_dict);  | 
    
    
    191  | 
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    	table_destroy(t);  | 
    
    
    192  | 
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    193  | 
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    ok:  | 
    
    
    194  | 
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    	log_info("info: Table \"%s\" successfully updated", table->t_name); | 
    
    
    195  | 
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    	return 1;  | 
    
    
    196  | 
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    197  | 
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    err:  | 
    
    
    198  | 
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    	table_destroy(t);  | 
    
    
    199  | 
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    	log_info("info: Failed to update table \"%s\"", table->t_name); | 
    
    
    200  | 
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    	return 0;  | 
    
    
    201  | 
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    }  | 
    
    
    202  | 
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    203  | 
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    static void *  | 
    
    
    204  | 
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    table_static_open(struct table *table)  | 
    
    
    205  | 
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    { | 
    
    
    206  | 
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    	return table;  | 
    
    
    207  | 
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    }  | 
    
    
    208  | 
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    209  | 
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    static void  | 
    
    
    210  | 
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    table_static_close(void *hdl)  | 
    
    
    211  | 
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    { | 
    
    
    212  | 
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    	return;  | 
    
    
    213  | 
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    }  | 
    
    
    214  | 
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    215  | 
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    static int  | 
    
    
    216  | 
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    table_static_lookup(void *hdl, struct dict *params, const char *key,  | 
    
    
    217  | 
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        enum table_service service, union lookup *lk)  | 
    
    
    218  | 
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    { | 
    
    
    219  | 
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    	struct table   *m  = hdl;  | 
    
    
    220  | 
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    	char	       *line;  | 
    
    
    221  | 
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    	int		ret;  | 
    
    
    222  | 
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    	int	       (*match)(const char *, const char *) = NULL;  | 
    
    
    223  | 
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    	size_t		i;  | 
    
    
    224  | 
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    	void	       *iter;  | 
    
    
    225  | 
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    	const char     *k;  | 
    
    
    226  | 
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    	char	       *v;  | 
    
    
    227  | 
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    228  | 
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    	for (i = 0; i < nitems(keycmp); ++i)  | 
    
    
    229  | 
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    		if (keycmp[i].service == service)  | 
    
    
    230  | 
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    			match = keycmp[i].func;  | 
    
    
    231  | 
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    232  | 
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    	line = NULL;  | 
    
    
    233  | 
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    	iter = NULL;  | 
    
    
    234  | 
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    	ret = 0;  | 
    
    
    235  | 
     | 
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    	while (dict_iter(&m->t_dict, &iter, &k, (void **)&v)) { | 
    
    
    236  | 
     | 
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    		if (match) { | 
    
    
    237  | 
     | 
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    			if (match(key, k)) { | 
    
    
    238  | 
     | 
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    				line = v;  | 
    
    
    239  | 
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    				ret = 1;  | 
    
    
    240  | 
     | 
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    			}  | 
    
    
    241  | 
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    		}  | 
    
    
    242  | 
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    		else { | 
    
    
    243  | 
     | 
     | 
    			if (strcmp(key, k) == 0) { | 
    
    
    244  | 
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    				line = v;  | 
    
    
    245  | 
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    				ret = 1;  | 
    
    
    246  | 
     | 
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    			}  | 
    
    
    247  | 
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    		}  | 
    
    
    248  | 
     | 
     | 
    		if (ret)  | 
    
    
    249  | 
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    			break;  | 
    
    
    250  | 
     | 
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    	}  | 
    
    
    251  | 
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    252  | 
     | 
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    	if (lk == NULL)  | 
    
    
    253  | 
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    		return ret ? 1 : 0;  | 
    
    
    254  | 
     | 
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    255  | 
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    	if (ret == 0)  | 
    
    
    256  | 
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     | 
    		return 0;  | 
    
    
    257  | 
     | 
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     | 
    
    
    258  | 
     | 
     | 
    	return table_parse_lookup(service, key, line, lk);  | 
    
    
    259  | 
     | 
     | 
    }  | 
    
    
    260  | 
     | 
     | 
     | 
    
    
    261  | 
     | 
     | 
    static int  | 
    
    
    262  | 
     | 
     | 
    table_static_fetch(void *hdl, struct dict *params,  | 
    
    
    263  | 
     | 
     | 
        enum table_service service, union lookup *lk)  | 
    
    
    264  | 
     | 
     | 
    { | 
    
    
    265  | 
     | 
     | 
    	struct table   *t = hdl;  | 
    
    
    266  | 
     | 
     | 
    	const char     *k;  | 
    
    
    267  | 
     | 
     | 
     | 
    
    
    268  | 
     | 
     | 
    	if (!dict_iter(&t->t_dict, &t->t_iter, &k, (void **)NULL)) { | 
    
    
    269  | 
     | 
     | 
    		t->t_iter = NULL;  | 
    
    
    270  | 
     | 
     | 
    		if (!dict_iter(&t->t_dict, &t->t_iter, &k, (void **)NULL))  | 
    
    
    271  | 
     | 
     | 
    			return 0;  | 
    
    
    272  | 
     | 
     | 
    	}  | 
    
    
    273  | 
     | 
     | 
     | 
    
    
    274  | 
     | 
     | 
    	if (lk == NULL)  | 
    
    
    275  | 
     | 
     | 
    		return 1;  | 
    
    
    276  | 
     | 
     | 
     | 
    
    
    277  | 
     | 
     | 
    	return table_parse_lookup(service, NULL, k, lk);  | 
    
    
    278  | 
     | 
     | 
    }  |