]>
Commit | Line | Data |
---|---|---|
46aded9a MT |
1 | /* |
2 | libloc - A library to determine the location of someone on the Internet | |
3 | ||
4 | Copyright (C) 2017 IPFire Development Team <info@ipfire.org> | |
5 | ||
6 | This library is free software; you can redistribute it and/or | |
7 | modify it under the terms of the GNU Lesser General Public | |
8 | License as published by the Free Software Foundation; either | |
9 | version 2.1 of the License, or (at your option) any later version. | |
10 | ||
11 | This library is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | Lesser General Public License for more details. | |
15 | */ | |
16 | ||
17 | #ifndef LIBLOC_PRIVATE_H | |
18 | #define LIBLOC_PRIVATE_H | |
19 | ||
1a3cb1b4 MT |
20 | #ifdef LIBLOC_PRIVATE |
21 | ||
726f9984 | 22 | #include <stdio.h> |
46aded9a MT |
23 | #include <syslog.h> |
24 | ||
c12a1385 | 25 | #include <libloc/libloc.h> |
46aded9a MT |
26 | |
27 | static inline void __attribute__((always_inline, format(printf, 2, 3))) | |
28 | loc_log_null(struct loc_ctx *ctx, const char *format, ...) {} | |
29 | ||
30 | #define loc_log_cond(ctx, prio, arg...) \ | |
31 | do { \ | |
32 | if (loc_get_log_priority(ctx) >= prio) \ | |
33 | loc_log(ctx, prio, __FILE__, __LINE__, __FUNCTION__, ## arg); \ | |
34 | } while (0) | |
35 | ||
36 | #ifdef ENABLE_DEBUG | |
37 | # define DEBUG(ctx, arg...) loc_log_cond(ctx, LOG_DEBUG, ## arg) | |
38 | #else | |
39 | # define DEBUG(ctx, arg...) loc_log_null(ctx, ## arg) | |
40 | #endif | |
41 | ||
42 | #define INFO(ctx, arg...) loc_log_cond(ctx, LOG_INFO, ## arg) | |
43 | #define ERROR(ctx, arg...) loc_log_cond(ctx, LOG_ERR, ## arg) | |
44 | ||
45 | #ifndef HAVE_SECURE_GETENV | |
46 | # ifdef HAVE___SECURE_GETENV | |
47 | # define secure_getenv __secure_getenv | |
48 | # else | |
d0cef0e8 | 49 | # define secure_getenv getenv |
46aded9a MT |
50 | # endif |
51 | #endif | |
52 | ||
53 | #define LOC_EXPORT __attribute__ ((visibility("default"))) | |
54 | ||
55 | void loc_log(struct loc_ctx *ctx, | |
56 | int priority, const char *file, int line, const char *fn, | |
57 | const char *format, ...) __attribute__((format(printf, 6, 7))); | |
58 | ||
d701dcfd | 59 | |
257626f5 MT |
60 | static inline void hexdump(struct loc_ctx* ctx, const void* addr, size_t len) { |
61 | char buffer_hex[16 * 3 + 6]; | |
62 | char buffer_ascii[17]; | |
63 | ||
64 | unsigned int i = 0; | |
65 | unsigned char* p = (unsigned char*)addr; | |
66 | ||
356cabc1 MT |
67 | DEBUG(ctx, "Dumping %zu byte(s)\n", len); |
68 | ||
6c27aec2 MT |
69 | if (!len) |
70 | return; | |
71 | ||
257626f5 MT |
72 | // Process every byte in the data |
73 | for (i = 0; i < len; i++) { | |
74 | // Multiple of 16 means new line (with line offset) | |
75 | if ((i % 16) == 0) { | |
76 | // Just don't print ASCII for the zeroth line | |
77 | if (i != 0) | |
78 | DEBUG(ctx, " %s %s\n", buffer_hex, buffer_ascii); | |
79 | ||
80 | // Output the offset. | |
81 | sprintf(buffer_hex, "%04x ", i); | |
82 | } | |
83 | ||
84 | // Now the hex code for the specific character | |
85 | sprintf(buffer_hex + 5 + ((i % 16) * 3), " %02x", p[i]); | |
86 | ||
87 | // And store a printable ASCII character for later | |
88 | if ((p[i] < 0x20) || (p[i] > 0x7e)) | |
89 | buffer_ascii[i % 16] = '.'; | |
90 | else | |
91 | buffer_ascii[i % 16] = p[i]; | |
92 | ||
93 | // Terminate string | |
94 | buffer_ascii[(i % 16) + 1] = '\0'; | |
95 | } | |
96 | ||
97 | // Pad out last line if not exactly 16 characters | |
98 | while ((i % 16) != 0) { | |
99 | sprintf(buffer_hex + 5 + ((i % 16) * 3), " "); | |
100 | i++; | |
101 | } | |
102 | ||
103 | // And print the final bit | |
104 | DEBUG(ctx, " %s %s\n", buffer_hex, buffer_ascii); | |
105 | } | |
106 | ||
46aded9a | 107 | #endif |
1a3cb1b4 | 108 | #endif |