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1.1 misho 1: /*
2: * Copyright (C) 2008 Martin Willi
3: * Copyright (C) 2008 Thomas Kallenberg
4: * HSR 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.
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;
35:
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:
60: METHOD(enumerator_t, section_enumerator_enumerate, bool,
61: section_enumerator_t *this, va_list args)
62: {
63: struct uci_element *element;
64: char **value;
65: int i;
66:
67: if (&this->current->list == this->list)
68: {
69: return FALSE;
70: }
71:
72: value = va_arg(args, char**);
73: if (value)
74: {
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: }
84: }
85:
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,
91: this->current->name, this->keywords[i]) == UCI_OK)
92: {
93: *value = uci_to_option(element)->value;
94: }
95: }
96:
97: this->current = list_to_element(this->current->list.next);
98: return TRUE;
99: }
100:
101: METHOD(enumerator_t, section_enumerator_destroy, void,
102: section_enumerator_t *this)
103: {
104: uci_free_context(this->ctx);
105: free(this);
106: }
107:
108: METHOD(uci_parser_t, create_section_enumerator, enumerator_t*,
109: private_uci_parser_t *this, ...)
110: {
111: section_enumerator_t *e;
112: va_list args;
113: int i;
114:
115: /* allocate enumerator large enough to hold keyword pointers */
116: i = 1;
117: va_start(args, this);
118: while (va_arg(args, char*))
119: {
120: i++;
121: }
122: va_end(args);
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: );
130: i = 0;
131: va_start(args, this);
132: do
133: {
134: e->keywords[i] = va_arg(args, char*);
135: }
136: while (e->keywords[i++]);
137: va_end(args);
138:
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:
156: METHOD(uci_parser_t, destroy, void,
157: private_uci_parser_t *this)
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: {
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: );
177:
178: return &this->public;
179: }
180: