1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
|
/*
* Copyright 2023, Vincent Douillet <vincent@vdouillet.fr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* 3. Neither the name of the copyright holder nor the names of its contributors
* may be used to endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "config.h"
#include "template.h"
#include "url.h"
/*
* Reads the file denoted by path into a newly allocated output buffer. Returns
* 0 for success, -1 for error. The size_t is the size of output buffer (only
* to be used in case of success).
*/
static int
read_file(const char *path, char **output, size_t * read_size)
{
long file_size;
FILE *fp;
fp = fopen(path, "r");
if (fp == NULL)
return -1;
/* get file size */
if (fseek(fp, 0L, SEEK_END) != 0)
return -1;
file_size = ftell(fp);
if (file_size < 0)
return -1;
/* rewind to file start */
if (fseek(fp, 0L, SEEK_SET) != 0)
return -1;
/* create output buffer */
*output = malloc(sizeof(char) * (file_size + 1));
if (*output == NULL)
return -1;
/* read the file */
*read_size = fread(*output, sizeof(char), file_size, fp);
if (*read_size == 0 || ferror(fp) != 0) {
free(*output);
return -1;
}
/* enforce string termination */
(*output)[*read_size] = '\0';
return 0;
}
struct page_template *
page_template_new(const char *page)
{
struct page_template *tmpl;
char template_path[PATH_MAX];
size_t path_size;
size_t file_size;
tmpl = (struct page_template *) calloc(1, sizeof(struct page_template));
if (tmpl == NULL)
return NULL;
/* read global header */
path_size = snprintf(template_path, sizeof(template_path), "%s/%s",
TEMPLATE_DIR, "head.html");
if (path_size < 0 || path_size >= sizeof(template_path) ||
read_file(template_path, &tmpl->header, &file_size) < 0) {
page_template_free(tmpl);
return NULL;
}
/* read global footer */
path_size = snprintf(template_path, sizeof(template_path), "%s/%s",
TEMPLATE_DIR, "foot.html");
if (path_size < 0 || path_size >= sizeof(template_path) ||
read_file(template_path, &tmpl->footer, &file_size) < 0) {
page_template_free(tmpl);
return NULL;
}
/* read page header */
path_size = snprintf(template_path, sizeof(template_path), "%s/%s_%s",
TEMPLATE_DIR, page, "head.html");
if (path_size < 0 || path_size >= sizeof(template_path) ||
read_file(template_path, &tmpl->page_header, &file_size) < 0) {
page_template_free(tmpl);
return NULL;
}
/* read page footer (optional) */
path_size = snprintf(template_path, sizeof(template_path), "%s/%s_%s",
TEMPLATE_DIR, page, "foot.html");
if (path_size < 0 || path_size >= sizeof(template_path)) {
page_template_free(tmpl);
return NULL;
}
read_file(template_path, &tmpl->page_footer, &file_size);
/* read page item (optional) */
path_size = snprintf(template_path, sizeof(template_path), "%s/%s_%s",
TEMPLATE_DIR, page, "item.html");
if (path_size < 0 || path_size >= sizeof(template_path)) {
page_template_free(tmpl);
return NULL;
}
read_file(template_path, &tmpl->page_item, &file_size);
return tmpl;
}
void
page_template_free(struct page_template * tmpl)
{
if (tmpl == NULL)
return;
if (tmpl->header != NULL)
free(tmpl->header);
if (tmpl->footer != NULL)
free(tmpl->footer);
if (tmpl->page_header != NULL)
free(tmpl->page_header);
if (tmpl->page_footer != NULL)
free(tmpl->page_footer);
if (tmpl->page_item != NULL)
free(tmpl->page_item);
free(tmpl);
}
|
