1: #ifndef __APACK_H
2: #define __APACK_H
3:
4:
5: typedef struct tagRawPacket {
6: size_t r_len;
7: uint8_t *r_buf;
8: uint8_t *r_next;
9: } rpack_t;
10:
11: #define RPACK_FREE(x) (assert((x)), memset((x), 0, sizeof(rpack_t)))
12: #define RPACK_INIT(x, b, l) do { assert((x)); RPACK_FREE(x); \
13: (x)->r_buf = (b); \
14: (x)->r_len = (l); \
15: (x)->r_next = (x)->r_buf; \
16: } while (0)
17: #define RPACK_SANITY(x) ((x) && (x)->r_buf && (x)->r_next && (x)->r_next >= (x)->r_buf)
18: #define RPACK_LEN(x) (assert((x)), (x)->r_len)
19: #define RPACK_REWIND(x) (assert((x)), (x)->r_next = (x)->r_buf)
20:
21: #define RPACK_SET_16(x, n) do { assert((x)); \
22: *((uint8_t *) (x) + 1) = *((const uint8_t *) (n) + 1); \
23: *((uint8_t *) (x) + 0) = *((const uint8_t *) (n) + 0); \
24: } while (0)
25: #define RPACK_SET_24(x, n) do { assert((x)); \
26: *((uint8_t *) (x) + 2) = *((const uint8_t *) (n) + 2); \
27: *((uint8_t *) (x) + 1) = *((const uint8_t *) (n) + 1); \
28: *((uint8_t *) (x) + 0) = *((const uint8_t *) (n) + 0); \
29: } while (0)
30: #define RPACK_SET_32(x, n) do { assert((x)); \
31: *((uint8_t *) (x) + 3) = *((const uint8_t *) (n) + 3); \
32: *((uint8_t *) (x) + 2) = *((const uint8_t *) (n) + 2); \
33: *((uint8_t *) (x) + 1) = *((const uint8_t *) (n) + 1); \
34: *((uint8_t *) (x) + 0) = *((const uint8_t *) (n) + 0); \
35: } while (0)
36: #define RPACK_SET_64(x, n) do { assert((x)); \
37: *((uint8_t *) (x) + 7) = *((const uint8_t *) (n) + 7); \
38: *((uint8_t *) (x) + 6) = *((const uint8_t *) (n) + 6); \
39: *((uint8_t *) (x) + 5) = *((const uint8_t *) (n) + 5); \
40: *((uint8_t *) (x) + 4) = *((const uint8_t *) (n) + 4); \
41: *((uint8_t *) (x) + 3) = *((const uint8_t *) (n) + 3); \
42: *((uint8_t *) (x) + 2) = *((const uint8_t *) (n) + 2); \
43: *((uint8_t *) (x) + 1) = *((const uint8_t *) (n) + 1); \
44: *((uint8_t *) (x) + 0) = *((const uint8_t *) (n) + 0); \
45: } while (0)
46:
47: #define EXTRACT_LE_8(x) (assert((x)), *(x))
48: #define EXTRACT_LE_16(x) (assert((x)), (u_int16_t) ( \
49: (uint16_t) *((const uint8_t *) (x) + 1) << 8 | \
50: (uint16_t) *((const uint8_t *) (x) + 0) \
51: ))
52: #define EXTRACT_LE_24(x) (assert((x)), (u_int32_t) ( \
53: (uint32_t) *((const uint8_t *) (x) + 2) << 16 | \
54: (uint32_t) *((const uint8_t *) (x) + 1) << 8 | \
55: (uint32_t) *((const uint8_t *) (x) + 0) \
56: ))
57: #define EXTRACT_LE_32(x) (assert((x)), (u_int32_t) ( \
58: (uint32_t) *((const uint8_t *) (x) + 3) << 24 | \
59: (uint32_t) *((const uint8_t *) (x) + 2) << 16 | \
60: (uint32_t) *((const uint8_t *) (x) + 1) << 8 | \
61: (uint32_t) *((const uint8_t *) (x) + 0) \
62: ))
63: #define EXTRACT_LE_64(x) (assert((x)), (u_int64_t) ( \
64: (uint64_t) *((const uint8_t *) (x) + 7) << 56 | \
65: (uint64_t) *((const uint8_t *) (x) + 6) << 48 | \
66: (uint64_t) *((const uint8_t *) (x) + 5) << 40 | \
67: (uint64_t) *((const uint8_t *) (x) + 4) << 32 | \
68: (uint64_t) *((const uint8_t *) (x) + 3) << 24 | \
69: (uint64_t) *((const uint8_t *) (x) + 2) << 16 | \
70: (uint64_t) *((const uint8_t *) (x) + 1) << 8 | \
71: (uint64_t) *((const uint8_t *) (x) + 0) \
72: ))
73:
74: #define EXTRACT_BE_8(x) (assert((x)), *(x))
75: #define EXTRACT_BE_16(x) (assert((x)), (u_int16_t) ( \
76: (uint16_t) *((const uint8_t *) (x) + 0) << 8 | \
77: (uint16_t) *((const uint8_t *) (x) + 1) \
78: ))
79: #define EXTRACT_BE_24(x) (assert((x)), (u_int32_t) ( \
80: (uint32_t) *((const uint8_t *) (x) + 0) << 16 | \
81: (uint32_t) *((const uint8_t *) (x) + 1) << 8 | \
82: (uint32_t) *((const uint8_t *) (x) + 2) \
83: ))
84: #define EXTRACT_BE_32(x) (assert((x)), (u_int32_t) ( \
85: (uint32_t) *((const uint8_t *) (x) + 0) << 24 | \
86: (uint32_t) *((const uint8_t *) (x) + 1) << 16 | \
87: (uint32_t) *((const uint8_t *) (x) + 2) << 8 | \
88: (uint32_t) *((const uint8_t *) (x) + 3) \
89: ))
90: #define EXTRACT_BE_64(x) (assert((x)), (u_int64_t) ( \
91: (uint64_t) *((const uint8_t *) (x) + 0) << 56 | \
92: (uint64_t) *((const uint8_t *) (x) + 1) << 48 | \
93: (uint64_t) *((const uint8_t *) (x) + 2) << 40 | \
94: (uint64_t) *((const uint8_t *) (x) + 3) << 32 | \
95: (uint64_t) *((const uint8_t *) (x) + 4) << 24 | \
96: (uint64_t) *((const uint8_t *) (x) + 5) << 16 | \
97: (uint64_t) *((const uint8_t *) (x) + 6) << 8 | \
98: (uint64_t) *((const uint8_t *) (x) + 7) \
99: ))
100:
101:
102: /*
103: * rpack_align_and_reserve() - Align & reserve space
104: *
105: * @rp = raw buffer
106: * @siz = need size
107: * return: NULL error or not enough space, !=NULL next position
108: */
109: uint8_t *rpack_align_and_reserve(rpack_t * __restrict rp, size_t siz);
110:
111: /*
112: * rpack_create() - Allocate & init raw packet structure
113: *
114: * @buf = buffer
115: * @buflen = length of buffer
116: * return: NULL error or !=NULL raw packet, should be freed by rpack_destroy()
117: */
118: rpack_t *rpack_create(void * __restrict buf, size_t buflen);
119: /*
120: * rpack_destroy() - Release & free raw packet structure
121: *
122: * @rp = raw packet
123: * return: none
124: */
125: void rpack_destroy(rpack_t ** __restrict rp);
126:
127: /*
128: * rpack_uint8() - Pack/Unpack 8bit value
129: *
130: * @rp = raw buffer
131: * @n = set value if !=NULL
132: * return: -1 error or get value
133: */
134: uint8_t rpack_uint8(rpack_t * __restrict rp, uint8_t * __restrict n);
135: /*
136: * rpack_uint16() - Pack/Unpack 16bit value
137: *
138: * @rp = raw buffer
139: * @n = set value if !=NULL
140: * return: -1 error or get value
141: */
142: uint16_t rpack_uint16(rpack_t * __restrict rp, uint16_t * __restrict n);
143: /*
144: * rpack_uint24() - Pack/Unpack 24bit value
145: *
146: * @rp = raw buffer
147: * @n = set value if !=NULL
148: * return: -1 error or get value
149: */
150: uint32_t rpack_uint24(rpack_t * __restrict rp, uint32_t * __restrict n);
151: /*
152: * rpack_uint32() - Pack/Unpack 32bit value
153: *
154: * @rp = raw buffer
155: * @n = set value if !=NULL
156: * return: -1 error or get value
157: */
158: uint32_t rpack_uint32(rpack_t * __restrict rp, uint32_t * __restrict n);
159: /*
160: * rpack_uint64() - Pack/Unpack 64bit value
161: *
162: * @rp = raw buffer
163: * @n = set value if !=NULL
164: * return: -1 error or get value
165: */
166: uint64_t rpack_uint64(rpack_t * __restrict rp, uint64_t * __restrict n);
167:
168:
169: #endif
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