46
47#include <opencrypto/cryptodev.h>
48#include <opencrypto/deflate.h>
49
50SDT_PROVIDER_DECLARE(opencrypto);
51SDT_PROBE_DEFINE2(opencrypto, deflate, deflate_global, entry,
52 "int", "u_int32_t");
53SDT_PROBE_DEFINE5(opencrypto, deflate, deflate_global, bad,
54 "int", "int", "int", "int", "int");
55SDT_PROBE_DEFINE5(opencrypto, deflate, deflate_global, iter,
56 "int", "int", "int", "int", "int");
57SDT_PROBE_DEFINE2(opencrypto, deflate, deflate_global, return,
58 "int", "u_int32_t");
59
60int window_inflate = -1 * MAX_WBITS;
61int window_deflate = -12;
62
63/*
64 * This function takes a block of data and (de)compress it using the deflate
65 * algorithm
66 */
67
68u_int32_t
69deflate_global(data, size, decomp, out)
70 u_int8_t *data;
71 u_int32_t size;
72 int decomp;
73 u_int8_t **out;
74{
75 /* decomp indicates whether we compress (0) or decompress (1) */
76
77 z_stream zbuf;
78 u_int8_t *output;
79 u_int32_t count, result;
80 int error, i;
81 struct deflate_buf *bufh, *bufp;
82
83 SDT_PROBE2(opencrypto, deflate, deflate_global, entry, decomp, size);
84
85 bufh = bufp = NULL;
86 if (!decomp) {
87 i = 1;
88 } else {
89 /*
90 * Choose a buffer with 4x the size of the input buffer
91 * for the size of the output buffer in the case of
92 * decompression. If it's not sufficient, it will need to be
93 * updated while the decompression is going on.
94 */
95 i = 4;
96 }
97 /*
98 * Make sure we do have enough output space. Repeated calls to
99 * deflate need at least 6 bytes of output buffer space to avoid
100 * repeated markers. We will always provide at least 16 bytes.
101 */
102 while ((size * i) < 16)
103 i++;
104
105 bufh = bufp = malloc(sizeof(*bufp) + (size_t)(size * i),
106 M_CRYPTO_DATA, M_NOWAIT);
107 if (bufp == NULL) {
108 SDT_PROBE3(opencrypto, deflate, deflate_global, bad,
109 decomp, 0, __LINE__);
110 goto bad2;
111 }
112 bufp->next = NULL;
113 bufp->size = size * i;
114
115 bzero(&zbuf, sizeof(z_stream));
116 zbuf.zalloc = z_alloc;
117 zbuf.zfree = z_free;
118 zbuf.opaque = Z_NULL;
119 zbuf.next_in = data; /* Data that is going to be processed. */
120 zbuf.avail_in = size; /* Total length of data to be processed. */
121 zbuf.next_out = bufp->data;
122 zbuf.avail_out = bufp->size;
123
124 error = decomp ? inflateInit2(&zbuf, window_inflate) :
125 deflateInit2(&zbuf, Z_DEFAULT_COMPRESSION, Z_METHOD,
126 window_deflate, Z_MEMLEVEL, Z_DEFAULT_STRATEGY);
127 if (error != Z_OK) {
128 SDT_PROBE3(opencrypto, deflate, deflate_global, bad,
129 decomp, error, __LINE__);
130 goto bad;
131 }
132
133 for (;;) {
134 error = decomp ? inflate(&zbuf, Z_SYNC_FLUSH) :
135 deflate(&zbuf, Z_FINISH);
136 if (error != Z_OK && error != Z_STREAM_END) {
137 /*
138 * Unfortunately we are limited to 5 arguments,
139 * thus use two probes.
140 */
141 SDT_PROBE5(opencrypto, deflate, deflate_global, bad,
142 decomp, error, __LINE__,
143 zbuf.avail_in, zbuf.avail_out);
144 SDT_PROBE5(opencrypto, deflate, deflate_global, bad,
145 decomp, error, __LINE__,
146 zbuf.state->dummy, zbuf.total_out);
147 goto bad;
148 }
149 SDT_PROBE5(opencrypto, deflate, deflate_global, iter,
150 decomp, error, __LINE__,
151 zbuf.avail_in, zbuf.avail_out);
152 SDT_PROBE5(opencrypto, deflate, deflate_global, iter,
153 decomp, error, __LINE__,
154 zbuf.state->dummy, zbuf.total_out);
155 if (decomp && zbuf.avail_in == 0 && error == Z_STREAM_END) {
156 /* Done. */
157 break;
158 } else if (!decomp && error == Z_STREAM_END) {
159 /* Done. */
160 break;
161 } else if (zbuf.avail_out == 0) {
162 struct deflate_buf *p;
163
164 /* We need more output space for another iteration. */
165 p = malloc(sizeof(*p) + (size_t)(size * i),
166 M_CRYPTO_DATA, M_NOWAIT);
167 if (p == NULL) {
168 SDT_PROBE3(opencrypto, deflate, deflate_global,
169 bad, decomp, 0, __LINE__);
170 goto bad;
171 }
172 p->next = NULL;
173 p->size = size * i;
174 bufp->next = p;
175 bufp = p;
176 zbuf.next_out = bufp->data;
177 zbuf.avail_out = bufp->size;
178 } else {
179 /* Unexpect result. */
180 /*
181 * Unfortunately we are limited to 5 arguments,
182 * thus, again, use two probes.
183 */
184 SDT_PROBE5(opencrypto, deflate, deflate_global, bad,
185 decomp, error, __LINE__,
186 zbuf.avail_in, zbuf.avail_out);
187 SDT_PROBE5(opencrypto, deflate, deflate_global, bad,
188 decomp, error, __LINE__,
189 zbuf.state->dummy, zbuf.total_out);
190 goto bad;
191 }
192 }
193
194 result = count = zbuf.total_out;
195
196 *out = malloc(result, M_CRYPTO_DATA, M_NOWAIT);
197 if (*out == NULL) {
198 SDT_PROBE3(opencrypto, deflate, deflate_global, bad,
199 decomp, 0, __LINE__);
200 goto bad;
201 }
202 if (decomp)
203 inflateEnd(&zbuf);
204 else
205 deflateEnd(&zbuf);
206 output = *out;
207 for (bufp = bufh; bufp != NULL; ) {
208 if (count > bufp->size) {
209 struct deflate_buf *p;
210
211 bcopy(bufp->data, *out, bufp->size);
212 *out += bufp->size;
213 count -= bufp->size;
214 p = bufp;
215 bufp = bufp->next;
216 free(p, M_CRYPTO_DATA);
217 } else {
218 /* It should be the last buffer. */
219 bcopy(bufp->data, *out, count);
220 *out += count;
221 free(bufp, M_CRYPTO_DATA);
222 bufp = NULL;
223 count = 0;
224 }
225 }
226 *out = output;
227 SDT_PROBE2(opencrypto, deflate, deflate_global, return, decomp, result);
228 return result;
229
230bad:
231 if (decomp)
232 inflateEnd(&zbuf);
233 else
234 deflateEnd(&zbuf);
235 for (bufp = bufh; bufp != NULL; ) {
236 struct deflate_buf *p;
237
238 p = bufp;
239 bufp = bufp->next;
240 free(p, M_CRYPTO_DATA);
241 }
242bad2:
243 *out = NULL;
244 return 0;
245}
246
247void *
248z_alloc(nil, type, size)
249 void *nil;
250 u_int type, size;
251{
252 void *ptr;
253
254 ptr = malloc(type *size, M_CRYPTO_DATA, M_NOWAIT);
255 return ptr;
256}
257
258void
259z_free(nil, ptr)
260 void *nil, *ptr;
261{
262 free(ptr, M_CRYPTO_DATA);
263}
| 46
47#include <opencrypto/cryptodev.h>
48#include <opencrypto/deflate.h>
49
50SDT_PROVIDER_DECLARE(opencrypto);
51SDT_PROBE_DEFINE2(opencrypto, deflate, deflate_global, entry,
52 "int", "u_int32_t");
53SDT_PROBE_DEFINE5(opencrypto, deflate, deflate_global, bad,
54 "int", "int", "int", "int", "int");
55SDT_PROBE_DEFINE5(opencrypto, deflate, deflate_global, iter,
56 "int", "int", "int", "int", "int");
57SDT_PROBE_DEFINE2(opencrypto, deflate, deflate_global, return,
58 "int", "u_int32_t");
59
60int window_inflate = -1 * MAX_WBITS;
61int window_deflate = -12;
62
63/*
64 * This function takes a block of data and (de)compress it using the deflate
65 * algorithm
66 */
67
68u_int32_t
69deflate_global(data, size, decomp, out)
70 u_int8_t *data;
71 u_int32_t size;
72 int decomp;
73 u_int8_t **out;
74{
75 /* decomp indicates whether we compress (0) or decompress (1) */
76
77 z_stream zbuf;
78 u_int8_t *output;
79 u_int32_t count, result;
80 int error, i;
81 struct deflate_buf *bufh, *bufp;
82
83 SDT_PROBE2(opencrypto, deflate, deflate_global, entry, decomp, size);
84
85 bufh = bufp = NULL;
86 if (!decomp) {
87 i = 1;
88 } else {
89 /*
90 * Choose a buffer with 4x the size of the input buffer
91 * for the size of the output buffer in the case of
92 * decompression. If it's not sufficient, it will need to be
93 * updated while the decompression is going on.
94 */
95 i = 4;
96 }
97 /*
98 * Make sure we do have enough output space. Repeated calls to
99 * deflate need at least 6 bytes of output buffer space to avoid
100 * repeated markers. We will always provide at least 16 bytes.
101 */
102 while ((size * i) < 16)
103 i++;
104
105 bufh = bufp = malloc(sizeof(*bufp) + (size_t)(size * i),
106 M_CRYPTO_DATA, M_NOWAIT);
107 if (bufp == NULL) {
108 SDT_PROBE3(opencrypto, deflate, deflate_global, bad,
109 decomp, 0, __LINE__);
110 goto bad2;
111 }
112 bufp->next = NULL;
113 bufp->size = size * i;
114
115 bzero(&zbuf, sizeof(z_stream));
116 zbuf.zalloc = z_alloc;
117 zbuf.zfree = z_free;
118 zbuf.opaque = Z_NULL;
119 zbuf.next_in = data; /* Data that is going to be processed. */
120 zbuf.avail_in = size; /* Total length of data to be processed. */
121 zbuf.next_out = bufp->data;
122 zbuf.avail_out = bufp->size;
123
124 error = decomp ? inflateInit2(&zbuf, window_inflate) :
125 deflateInit2(&zbuf, Z_DEFAULT_COMPRESSION, Z_METHOD,
126 window_deflate, Z_MEMLEVEL, Z_DEFAULT_STRATEGY);
127 if (error != Z_OK) {
128 SDT_PROBE3(opencrypto, deflate, deflate_global, bad,
129 decomp, error, __LINE__);
130 goto bad;
131 }
132
133 for (;;) {
134 error = decomp ? inflate(&zbuf, Z_SYNC_FLUSH) :
135 deflate(&zbuf, Z_FINISH);
136 if (error != Z_OK && error != Z_STREAM_END) {
137 /*
138 * Unfortunately we are limited to 5 arguments,
139 * thus use two probes.
140 */
141 SDT_PROBE5(opencrypto, deflate, deflate_global, bad,
142 decomp, error, __LINE__,
143 zbuf.avail_in, zbuf.avail_out);
144 SDT_PROBE5(opencrypto, deflate, deflate_global, bad,
145 decomp, error, __LINE__,
146 zbuf.state->dummy, zbuf.total_out);
147 goto bad;
148 }
149 SDT_PROBE5(opencrypto, deflate, deflate_global, iter,
150 decomp, error, __LINE__,
151 zbuf.avail_in, zbuf.avail_out);
152 SDT_PROBE5(opencrypto, deflate, deflate_global, iter,
153 decomp, error, __LINE__,
154 zbuf.state->dummy, zbuf.total_out);
155 if (decomp && zbuf.avail_in == 0 && error == Z_STREAM_END) {
156 /* Done. */
157 break;
158 } else if (!decomp && error == Z_STREAM_END) {
159 /* Done. */
160 break;
161 } else if (zbuf.avail_out == 0) {
162 struct deflate_buf *p;
163
164 /* We need more output space for another iteration. */
165 p = malloc(sizeof(*p) + (size_t)(size * i),
166 M_CRYPTO_DATA, M_NOWAIT);
167 if (p == NULL) {
168 SDT_PROBE3(opencrypto, deflate, deflate_global,
169 bad, decomp, 0, __LINE__);
170 goto bad;
171 }
172 p->next = NULL;
173 p->size = size * i;
174 bufp->next = p;
175 bufp = p;
176 zbuf.next_out = bufp->data;
177 zbuf.avail_out = bufp->size;
178 } else {
179 /* Unexpect result. */
180 /*
181 * Unfortunately we are limited to 5 arguments,
182 * thus, again, use two probes.
183 */
184 SDT_PROBE5(opencrypto, deflate, deflate_global, bad,
185 decomp, error, __LINE__,
186 zbuf.avail_in, zbuf.avail_out);
187 SDT_PROBE5(opencrypto, deflate, deflate_global, bad,
188 decomp, error, __LINE__,
189 zbuf.state->dummy, zbuf.total_out);
190 goto bad;
191 }
192 }
193
194 result = count = zbuf.total_out;
195
196 *out = malloc(result, M_CRYPTO_DATA, M_NOWAIT);
197 if (*out == NULL) {
198 SDT_PROBE3(opencrypto, deflate, deflate_global, bad,
199 decomp, 0, __LINE__);
200 goto bad;
201 }
202 if (decomp)
203 inflateEnd(&zbuf);
204 else
205 deflateEnd(&zbuf);
206 output = *out;
207 for (bufp = bufh; bufp != NULL; ) {
208 if (count > bufp->size) {
209 struct deflate_buf *p;
210
211 bcopy(bufp->data, *out, bufp->size);
212 *out += bufp->size;
213 count -= bufp->size;
214 p = bufp;
215 bufp = bufp->next;
216 free(p, M_CRYPTO_DATA);
217 } else {
218 /* It should be the last buffer. */
219 bcopy(bufp->data, *out, count);
220 *out += count;
221 free(bufp, M_CRYPTO_DATA);
222 bufp = NULL;
223 count = 0;
224 }
225 }
226 *out = output;
227 SDT_PROBE2(opencrypto, deflate, deflate_global, return, decomp, result);
228 return result;
229
230bad:
231 if (decomp)
232 inflateEnd(&zbuf);
233 else
234 deflateEnd(&zbuf);
235 for (bufp = bufh; bufp != NULL; ) {
236 struct deflate_buf *p;
237
238 p = bufp;
239 bufp = bufp->next;
240 free(p, M_CRYPTO_DATA);
241 }
242bad2:
243 *out = NULL;
244 return 0;
245}
246
247void *
248z_alloc(nil, type, size)
249 void *nil;
250 u_int type, size;
251{
252 void *ptr;
253
254 ptr = malloc(type *size, M_CRYPTO_DATA, M_NOWAIT);
255 return ptr;
256}
257
258void
259z_free(nil, ptr)
260 void *nil, *ptr;
261{
262 free(ptr, M_CRYPTO_DATA);
263}
|