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61c46386 MW |
1 | /* |
2 | * Copyright (C) 2008 Martin Willi | |
3 | * Copyright (C) 2008 Thomas Kallenberg | |
4 | * Hochschule fuer Technik Rapperswil | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify it | |
7 | * under the terms of the GNU General Public License as published by the | |
8 | * Free Software Foundation; either version 2 of the License, or (at your | |
9 | * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, but | |
12 | * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY | |
13 | * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
14 | * for more details. | |
61c46386 MW |
15 | */ |
16 | ||
17 | #include "uci_parser.h" | |
18 | ||
19 | #include <stdarg.h> | |
20 | ||
21 | #include <library.h> | |
22 | #include <uci.h> | |
23 | ||
24 | typedef struct private_uci_parser_t private_uci_parser_t; | |
25 | ||
26 | /** | |
27 | * Private data of an uci_parser_t object | |
28 | */ | |
29 | struct private_uci_parser_t { | |
30 | ||
31 | /** | |
32 | * Public part | |
33 | */ | |
34 | uci_parser_t public; | |
7daf5226 | 35 | |
61c46386 MW |
36 | /** |
37 | * UCI package name this parser reads | |
38 | */ | |
39 | char *package; | |
40 | }; | |
41 | ||
42 | /** | |
43 | * enumerator implementation create_section_enumerator | |
44 | */ | |
45 | typedef struct { | |
46 | /** implements enumerator */ | |
47 | enumerator_t public; | |
48 | /** currently enumerated uci section */ | |
49 | struct uci_element *current; | |
50 | /** all uci ipsec config sections */ | |
51 | struct uci_list *list; | |
52 | /** uci conntext */ | |
53 | struct uci_context *ctx; | |
54 | /** ipsec uci package */ | |
55 | struct uci_package *package; | |
56 | /** NULL terminated list of keywords */ | |
57 | char *keywords[]; | |
58 | } section_enumerator_t; | |
59 | ||
d3e4e92e | 60 | METHOD(enumerator_t, section_enumerator_enumerate, bool, |
95a63bf2 | 61 | section_enumerator_t *this, va_list args) |
61c46386 MW |
62 | { |
63 | struct uci_element *element; | |
64 | char **value; | |
61c46386 | 65 | int i; |
7daf5226 | 66 | |
61c46386 MW |
67 | if (&this->current->list == this->list) |
68 | { | |
69 | return FALSE; | |
70 | } | |
7daf5226 | 71 | |
61c46386 MW |
72 | value = va_arg(args, char**); |
73 | if (value) | |
74 | { | |
12b1c1a1 MW |
75 | if (uci_lookup(this->ctx, &element, this->package, |
76 | this->current->name, "name") == UCI_OK) | |
77 | { /* use "name" attribute as config name if available ... */ | |
78 | *value = uci_to_option(element)->value; | |
79 | } | |
80 | else | |
81 | { /* ... or the section name becomes config name */ | |
82 | *value = uci_to_section(this->current)->type; | |
83 | } | |
61c46386 | 84 | } |
7daf5226 | 85 | |
61c46386 MW |
86 | /* followed by keyword parameters */ |
87 | for (i = 0; this->keywords[i]; i++) | |
88 | { | |
89 | value = va_arg(args, char**); | |
90 | if (value && uci_lookup(this->ctx, &element, this->package, | |
b9b8a98f | 91 | this->current->name, this->keywords[i]) == UCI_OK) |
61c46386 MW |
92 | { |
93 | *value = uci_to_option(element)->value; | |
94 | } | |
95 | } | |
7daf5226 | 96 | |
61c46386 MW |
97 | this->current = list_to_element(this->current->list.next); |
98 | return TRUE; | |
99 | } | |
100 | ||
d3e4e92e TB |
101 | METHOD(enumerator_t, section_enumerator_destroy, void, |
102 | section_enumerator_t *this) | |
61c46386 MW |
103 | { |
104 | uci_free_context(this->ctx); | |
105 | free(this); | |
106 | } | |
107 | ||
d3e4e92e TB |
108 | METHOD(uci_parser_t, create_section_enumerator, enumerator_t*, |
109 | private_uci_parser_t *this, ...) | |
61c46386 MW |
110 | { |
111 | section_enumerator_t *e; | |
112 | va_list args; | |
113 | int i; | |
7daf5226 | 114 | |
2db6d5b8 | 115 | /* allocate enumerator large enough to hold keyword pointers */ |
61c46386 MW |
116 | i = 1; |
117 | va_start(args, this); | |
118 | while (va_arg(args, char*)) | |
119 | { | |
120 | i++; | |
121 | } | |
122 | va_end(args); | |
95a63bf2 TB |
123 | INIT_EXTRA(e, sizeof(char*) * i, |
124 | .public = { | |
125 | .enumerate = enumerator_enumerate_default, | |
126 | .venumerate = _section_enumerator_enumerate, | |
127 | .destroy = _section_enumerator_destroy, | |
128 | }, | |
129 | ); | |
61c46386 MW |
130 | i = 0; |
131 | va_start(args, this); | |
7daf5226 | 132 | do |
61c46386 MW |
133 | { |
134 | e->keywords[i] = va_arg(args, char*); | |
135 | } | |
136 | while (e->keywords[i++]); | |
137 | va_end(args); | |
7daf5226 | 138 | |
61c46386 MW |
139 | /* load uci context */ |
140 | e->ctx = uci_alloc_context(); | |
141 | if (uci_load(e->ctx, this->package, &e->package) != UCI_OK) | |
142 | { | |
143 | section_enumerator_destroy(e); | |
144 | return NULL; | |
145 | } | |
146 | e->list = &e->package->sections; | |
147 | e->current = list_to_element(e->list->next); | |
148 | if (e->current->type != UCI_TYPE_SECTION) | |
149 | { | |
150 | section_enumerator_destroy(e); | |
151 | return NULL; | |
152 | } | |
153 | return &e->public; | |
154 | } | |
155 | ||
d3e4e92e TB |
156 | METHOD(uci_parser_t, destroy, void, |
157 | private_uci_parser_t *this) | |
61c46386 MW |
158 | { |
159 | free(this->package); | |
160 | free(this); | |
161 | } | |
162 | ||
163 | /** | |
164 | * Described in header. | |
165 | */ | |
166 | uci_parser_t *uci_parser_create(char *package) | |
167 | { | |
d3e4e92e TB |
168 | private_uci_parser_t *this; |
169 | ||
170 | INIT(this, | |
171 | .public = { | |
172 | .create_section_enumerator = _create_section_enumerator, | |
173 | .destroy = _destroy, | |
174 | }, | |
175 | .package = strdup(package), | |
176 | ); | |
7daf5226 | 177 | |
61c46386 MW |
178 | return &this->public; |
179 | } | |
180 |