1 /* This file is part of Pazpar2.
2 Copyright (C) 2006-2011 Index Data
4 Pazpar2 is free software; you can redistribute it and/or modify it under
5 the terms of the GNU General Public License as published by the Free
6 Software Foundation; either version 2, or (at your option) any later
9 Pazpar2 is distributed in the hope that it will be useful, but WITHOUT ANY
10 WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
25 #include <sys/types.h>
33 #include "pazpar2_config.h"
38 #include <sys/types.h>
40 enum pazpar2_database_criterion_type {
42 PAZPAR2_SUBSTRING_MATCH
45 struct database_criterion_value {
47 struct database_criterion_value *next;
50 struct database_criterion {
52 enum pazpar2_database_criterion_type type;
53 struct database_criterion_value *values;
54 struct database_criterion *next;
57 struct database *new_database(const char *id, NMEM nmem)
60 struct setting *idset;
62 db = nmem_malloc(nmem, sizeof(*db));
63 db->id = nmem_strdup(nmem, id);
64 db->num_settings = PZ_MAX_EOF;
65 db->settings = nmem_malloc(nmem, sizeof(struct settings*) *
68 memset(db->settings, 0, sizeof(struct settings*) * db->num_settings);
69 idset = nmem_malloc(nmem, sizeof(*idset));
70 idset->precedence = 0;
71 idset->name = "pz:id";
72 idset->target = idset->value = db->id;
74 db->settings[PZ_ID] = idset;
79 // Return a database structure by ID. Load and add to list if necessary
80 // new==1 just means we know it's not in the list
81 struct database *create_database_for_service(const char *id,
82 struct conf_service *service)
85 for (p = service->databases; p; p = p->next)
86 if (!strcmp(p->id, id))
89 p = new_database(id, service->nmem);
91 p->next = service->databases;
92 service->databases = p;
97 // This whole session_grep database thing should be moved elsewhere
99 int match_zurl(const char *zurl, const char *pattern)
103 if (!strcmp(pattern, "*"))
105 else if (!strncmp(pattern, "*/", 2)) // host wildcard.. what the heck is that for?
107 char *db = strchr(zurl, '/');
110 if (!strcmp(pattern + 2, db))
115 else if (*(pattern + (len = strlen(pattern) - 1)) == '*') // db wildcard
117 if (!strncmp(pattern, zurl, len))
122 else if (!strcmp(pattern, zurl))
128 // This will be generalized at some point
129 static int match_criterion(struct setting **settings,
130 struct conf_service *service,
131 struct database_criterion *c)
133 int offset = settings_lookup_offset(service, c->name);
134 struct database_criterion_value *v;
138 yaz_log(YLOG_WARN, "Criterion not found: %s", c->name);
141 if (!settings[offset])
143 for (v = c->values; v; v = v->next)
145 if (c->type == PAZPAR2_STRING_MATCH)
149 if (match_zurl(settings[offset]->value, v->value))
154 if (!strcmp(settings[offset]->value, v->value))
158 else if (c->type == PAZPAR2_SUBSTRING_MATCH)
160 if (strstr(settings[offset]->value, v->value))
170 // parses crit1=val1,crit2=val2|val3,...
171 static struct database_criterion *create_database_criterion(NMEM m,
174 struct database_criterion *res = 0;
181 nmem_strsplit(m, ",", buf, &values, &num);
182 for (i = 0; i < num; i++)
187 struct database_criterion *new = nmem_malloc(m, sizeof(*new));
189 if ((eq = strchr(values[i], '=')))
190 new->type = PAZPAR2_STRING_MATCH;
191 else if ((eq = strchr(values[i], '~')))
192 new->type = PAZPAR2_SUBSTRING_MATCH;
195 yaz_log(YLOG_WARN, "Missing equal-sign/tilde in filter");
199 new->name = values[i];
200 nmem_strsplit(m, "|", eq, &subvalues, &subnum);
202 for (subi = 0; subi < subnum; subi++)
204 struct database_criterion_value *newv
205 = nmem_malloc(m, sizeof(*newv));
206 newv->value = subvalues[subi];
207 newv->next = new->values;
216 static int database_match_criteria(struct setting **settings,
217 struct conf_service *service,
218 struct database_criterion *cl)
220 for (; cl; cl = cl->next)
221 if (!match_criterion(settings, service, cl))
223 if (cl) // one of the criteria failed to match -- skip this db
229 // Cycles through databases, calling a handler function on the ones for
230 // which all criteria matched.
231 int session_grep_databases(struct session *se, const char *filter,
232 void (*fun)(struct session *se, struct session_database *db))
234 struct session_database *p;
235 NMEM nmem = nmem_create();
237 struct database_criterion *cl = create_database_criterion(nmem, filter);
239 for (p = se->databases; p; p = p->next)
241 if (p->settings && p->settings[PZ_ALLOW] && *p->settings[PZ_ALLOW]->value == '0')
243 if (!p->settings[PZ_NAME])
245 if (database_match_criteria(p->settings, se->service, cl))
255 int predef_grep_databases(void *context, struct conf_service *service,
256 void (*fun)(void *context, struct database *db))
261 for (p = service->databases; p; p = p->next)
262 if (database_match_criteria(p->settings, service, 0))
273 * c-file-style: "Stroustrup"
274 * indent-tabs-mode: nil
276 * vim: shiftwidth=4 tabstop=8 expandtab