Mercurial > hg > nginx-vendor-0-7
comparison src/core/ngx_string.c @ 0:f0b350454894 NGINX_0_1_0
nginx 0.1.0
*) The first public version.
author | Igor Sysoev <http://sysoev.ru> |
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date | Mon, 04 Oct 2004 00:00:00 +0400 |
parents | |
children | cc9f381affaa |
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-1:000000000000 | 0:f0b350454894 |
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1 | |
2 /* | |
3 * Copyright (C) Igor Sysoev | |
4 */ | |
5 | |
6 | |
7 #include <ngx_config.h> | |
8 #include <ngx_core.h> | |
9 | |
10 | |
11 u_char *ngx_cpystrn(u_char *dst, u_char *src, size_t n) | |
12 { | |
13 if (n == 0) { | |
14 return dst; | |
15 } | |
16 | |
17 for (/* void */; --n; dst++, src++) { | |
18 *dst = *src; | |
19 | |
20 if (*dst == '\0') { | |
21 return dst; | |
22 } | |
23 } | |
24 | |
25 *dst = '\0'; | |
26 | |
27 return dst; | |
28 } | |
29 | |
30 | |
31 ngx_int_t ngx_rstrncmp(u_char *s1, u_char *s2, size_t n) | |
32 { | |
33 if (n == 0) { | |
34 return 0; | |
35 } | |
36 | |
37 n--; | |
38 | |
39 for ( ;; ) { | |
40 if (s1[n] != s2[n]) { | |
41 return s1[n] - s2[n]; | |
42 } | |
43 | |
44 if (n == 0) { | |
45 return 0; | |
46 } | |
47 | |
48 n--; | |
49 } | |
50 } | |
51 | |
52 | |
53 ngx_int_t ngx_atoi(u_char *line, size_t n) | |
54 { | |
55 ngx_int_t value; | |
56 | |
57 if (n == 0) { | |
58 return NGX_ERROR; | |
59 } | |
60 | |
61 for (value = 0; n--; line++) { | |
62 if (*line < '0' || *line > '9') { | |
63 return NGX_ERROR; | |
64 } | |
65 | |
66 value = value * 10 + (*line - '0'); | |
67 } | |
68 | |
69 if (value < 0) { | |
70 return NGX_ERROR; | |
71 | |
72 } else { | |
73 return value; | |
74 } | |
75 } | |
76 | |
77 | |
78 ngx_int_t ngx_hextoi(u_char *line, size_t n) | |
79 { | |
80 u_char ch; | |
81 ngx_int_t value; | |
82 | |
83 if (n == 0) { | |
84 return NGX_ERROR; | |
85 } | |
86 | |
87 for (value = 0; n--; line++) { | |
88 ch = *line; | |
89 | |
90 if (ch >= '0' && ch <= '9') { | |
91 value = value * 16 + (ch - '0'); | |
92 continue; | |
93 } | |
94 | |
95 if (ch >= 'A' && ch <= 'F') { | |
96 value = value * 16 + (ch - 'A' + 10); | |
97 continue; | |
98 } | |
99 | |
100 if (ch >= 'a' && ch <= 'f') { | |
101 value = value * 16 + (ch - 'a' + 10); | |
102 continue; | |
103 } | |
104 | |
105 return NGX_ERROR; | |
106 } | |
107 | |
108 if (value < 0) { | |
109 return NGX_ERROR; | |
110 | |
111 } else { | |
112 return value; | |
113 } | |
114 } | |
115 | |
116 | |
117 void ngx_md5_text(u_char *text, u_char *md5) | |
118 { | |
119 int i; | |
120 static u_char hex[] = "0123456789abcdef"; | |
121 | |
122 for (i = 0; i < 16; i++) { | |
123 *text++ = hex[md5[i] >> 4]; | |
124 *text++ = hex[md5[i] & 0xf]; | |
125 } | |
126 | |
127 *text = '\0'; | |
128 } | |
129 | |
130 | |
131 void ngx_encode_base64(ngx_str_t *src, ngx_str_t *dst) | |
132 { | |
133 u_char *d, *s; | |
134 size_t len; | |
135 static u_char basis64[] = | |
136 "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"; | |
137 | |
138 len = src->len; | |
139 s = src->data; | |
140 d = dst->data; | |
141 | |
142 while (len > 2) { | |
143 *d++ = basis64[(s[0] >> 2) & 0x3f]; | |
144 *d++ = basis64[((s[0] & 3) << 4) | (s[1] >> 4)]; | |
145 *d++ = basis64[((s[1] & 0x0f) << 2) | (s[2] >> 6)]; | |
146 *d++ = basis64[s[2] & 0x3f]; | |
147 | |
148 s += 3; | |
149 len -= 3; | |
150 } | |
151 | |
152 if (len) { | |
153 *d++ = basis64[(s[0] >> 2) & 0x3f]; | |
154 | |
155 if (len == 1) { | |
156 *d++ = basis64[(s[0] & 3) << 4]; | |
157 *d++ = '='; | |
158 | |
159 } else { | |
160 *d++ = basis64[((s[0] & 3) << 4) | (s[1] >> 4)]; | |
161 *d++ = basis64[(s[1] & 0x0f) << 2]; | |
162 } | |
163 | |
164 *d++ = '='; | |
165 } | |
166 | |
167 dst->len = d - dst->data; | |
168 } | |
169 | |
170 | |
171 ngx_int_t ngx_decode_base64(ngx_str_t *src, ngx_str_t *dst) | |
172 { | |
173 size_t len; | |
174 u_char *d, *s; | |
175 static u_char basis64[] = | |
176 { 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, | |
177 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, | |
178 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 62, 77, 77, 77, 63, | |
179 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 77, 77, 77, 77, 77, 77, | |
180 77, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, | |
181 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 77, 77, 77, 77, 77, | |
182 77, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, | |
183 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 77, 77, 77, 77, 77, | |
184 | |
185 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, | |
186 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, | |
187 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, | |
188 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, | |
189 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, | |
190 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, | |
191 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, | |
192 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77 }; | |
193 | |
194 for (len = 0; len < src->len; len++) { | |
195 if (src->data[len] == '=') { | |
196 break; | |
197 } | |
198 | |
199 if (basis64[src->data[len]] == 77) { | |
200 return NGX_ERROR; | |
201 } | |
202 } | |
203 | |
204 if (len % 4 == 1) { | |
205 return NGX_ERROR; | |
206 } | |
207 | |
208 s = src->data; | |
209 d = dst->data; | |
210 | |
211 while (len > 3) { | |
212 *d++ = (u_char) (basis64[s[0]] << 2 | basis64[s[1]] >> 4); | |
213 *d++ = (u_char) (basis64[s[1]] << 4 | basis64[s[2]] >> 2); | |
214 *d++ = (u_char) (basis64[s[2]] << 6 | basis64[s[3]]); | |
215 | |
216 s += 4; | |
217 len -= 4; | |
218 } | |
219 | |
220 if (len > 1) { | |
221 *d++ = (u_char) (basis64[s[0]] << 2 | basis64[s[1]] >> 4); | |
222 } | |
223 | |
224 if (len > 2) { | |
225 *d++ = (u_char) (basis64[s[1]] << 4 | basis64[s[2]] >> 2); | |
226 } | |
227 | |
228 dst->len = d - dst->data; | |
229 | |
230 return NGX_OK; | |
231 } | |
232 | |
233 | |
234 #if 0 | |
235 char *ngx_psprintf(ngx_pool_t *p, const char *fmt, ...) | |
236 { | |
237 va_list args; | |
238 | |
239 va_start(args, fmt); | |
240 | |
241 while (*fmt) { | |
242 switch(*fmt++) { | |
243 case '%': | |
244 switch(*fmt++) { | |
245 case 's': | |
246 s = va_arg(args, char *); | |
247 n += ngx_strlen(s); | |
248 break; | |
249 | |
250 default: | |
251 n++; | |
252 } | |
253 default: | |
254 n++; | |
255 } | |
256 } | |
257 | |
258 str = ngx_palloc(p, n); | |
259 | |
260 va_start(args, fmt); | |
261 | |
262 for (i = 0; i < n; i++) { | |
263 switch(*fmt++) { | |
264 case '%': | |
265 switch(*fmt++) { | |
266 case 's': | |
267 s = va_arg(args, char *); | |
268 while (str[i++] = s); | |
269 break; | |
270 | |
271 default: | |
272 n++; | |
273 } | |
274 default: | |
275 str[i] = *fmt; | |
276 } | |
277 } | |
278 | |
279 len += ngx_vsnprintf(errstr + len, sizeof(errstr) - len - 1, fmt, args); | |
280 | |
281 va_end(args); | |
282 | |
283 } | |
284 #endif |