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
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
|
/*
* Tiny RADIUS Client Library
* Copyright (C) 2022 David M. Syzdek <david@syzdek.net>.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of David M. Syzdek 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 DAVID M. SYZDEK 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.
*/
#define _LIB_LIBTRUTILS_LFILE_C 1
#include "lfile.h"
///////////////
// //
// Headers //
// //
///////////////
#pragma mark - Headers
#include <time.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/uio.h>
#include <unistd.h>
#include <errno.h>
#include <assert.h>
//////////////////
// //
// Prototypes //
// //
//////////////////
#pragma mark - Prototypes
/////////////////
// //
// Functions //
// //
/////////////////
#pragma mark - Functions
void
trutils_close(
TRUtilsFile * fb )
{
if (!(fb))
return;
if (fb->fd != -1)
close(fb->fd);
if ((fb->filename))
free(fb->filename);
free(fb);
return;
}
TRUtilsFile *
trutils_open(
unsigned opts,
const char * filename )
{
TRUtilsFile * fb;
struct stat sb;
assert(filename != NULL);
// verify file exists
if (stat(filename, &sb) == -1)
{
trutils_error(opts, NULL, "%s: %s", filename, strerror(errno));
return(NULL);
};
if ((sb.st_mode & S_IFMT) != S_IFREG)
{
trutils_error(opts, NULL, "%s: is not a file", filename);
return(NULL);
};
// allocate initial
if ((fb = malloc(sizeof(TRUtilsFile))) == NULL)
{
trutils_error(opts, NULL, "out of virtual memory");
return(NULL);
};
memset(fb, 0, sizeof(TRUtilsFile));
fb->fd = -1;
// copy filename
if ((fb->filename = tinyrad_strdup(filename)) == NULL)
{
trutils_error(opts, NULL, "out of virtual memory");
trutils_close(fb);
return(NULL);
};
// open file
if ((fb->fd = open(filename, O_RDONLY)) == -1)
{
trutils_error(opts, NULL, "%s: %s", filename, strerror(errno));
trutils_close(fb);
return(NULL);
};
return(fb);
}
int
trutils_readline(
unsigned opts,
TRUtilsFile * fb )
{
size_t offset;
size_t pos;
size_t size;
ssize_t rc;
assert(fb != 0);
// adjusts beginning of line
fb->bol = ((fb->eol)) ? &fb->eol[1] : fb->buff;
// look for end line
if ((fb->eol = strchr(fb->bol, '\n')) != NULL)
{
fb->eol[0] = '\0';
return(1);
};
// shift buffer
offset = (size_t)(fb->bol = fb->buff);
for(pos = 0; ((pos+offset) < fb->len); pos++)
fb->buff[pos] = fb->buff[pos+offset];
fb->buff[pos] = '\0';
fb->len -= offset;
// attempt to fill buffer
size = sizeof(fb->buff) - fb->len - 1;
if ((rc = read(fb->fd, &fb->buff[fb->len], size)) == -1)
{
trutils_error(opts, NULL, "%s: %s", fb->filename, strerror(errno));
return(-1);
};
fb->len += (size_t)rc;
fb->buff[fb->len] = '\0';
fb->bol = fb->buff;
if (!(fb->len))
return(0);
// look for end line
if ((fb->eol = strchr(fb->bol, '\n')) != NULL)
{
fb->eol[0] = '\0';
return(1);
};
fb->eol = &fb->bol[strlen(fb->bol)];
return(0);
}
/* end of source */
|
