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f0bbedf7 FT |
1 | /* |
2 | ashd - A Sane HTTP Daemon | |
3 | Copyright (C) 2008 Fredrik Tolf <fredrik@dolda2000.com> | |
4 | ||
5 | This program is free software: you can redistribute it and/or modify | |
6 | it under the terms of the GNU General Public License as published by | |
7 | the Free Software Foundation, either version 3 of the License, or | |
8 | (at your option) any later version. | |
9 | ||
10 | This program is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | GNU General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU General Public License | |
16 | along with this program. If not, see <http://www.gnu.org/licenses/>. | |
17 | */ | |
18 | ||
19 | #include <stdlib.h> | |
90f6e953 | 20 | #include <stdio.h> |
f2b26d44 FT |
21 | #include <string.h> |
22 | #include <ctype.h> | |
f0bbedf7 | 23 | |
ddf99192 FT |
24 | #ifdef HAVE_CONFIG_H |
25 | #include <config.h> | |
26 | #endif | |
f0bbedf7 FT |
27 | #include <utils.h> |
28 | ||
be6e50bf FT |
29 | static char *base64set = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"; |
30 | static int base64rev[] = { | |
31 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, | |
32 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, | |
33 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 62, -1, -1, -1, 63, | |
34 | 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, -1, -1, -1, -1, -1, -1, | |
35 | -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, | |
36 | 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, -1, -1, -1, -1, -1, | |
37 | -1, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, | |
38 | 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, -1, -1, -1, -1, -1, | |
39 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, | |
40 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, | |
41 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, | |
42 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, | |
43 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, | |
44 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, | |
45 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, | |
46 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, | |
47 | }; | |
48 | ||
f0bbedf7 FT |
49 | void _sizebuf(struct buffer *buf, size_t wanted, size_t el) |
50 | { | |
51 | size_t n; | |
52 | ||
53 | n = buf->s; | |
54 | if(n == 0) | |
55 | n = 1; | |
56 | while(n < wanted) | |
57 | n <<= 1; | |
58 | if(n <= buf->s) | |
59 | return; | |
60 | if(buf->b != NULL) | |
61 | buf->b = srealloc(buf->b, n * el); | |
62 | else | |
63 | buf->b = smalloc(n * el); | |
64 | buf->s = n; | |
65 | } | |
66 | ||
90f6e953 FT |
67 | char *decstr(char **p, size_t *len) |
68 | { | |
69 | char *p2, *ret; | |
70 | ||
71 | for(p2 = *p; (p2 - *p) < *len; p2++) { | |
72 | if(*p2 == 0) | |
73 | break; | |
74 | } | |
75 | if((p2 - *p) == *len) | |
76 | return(NULL); | |
77 | p2++; | |
78 | ret = *p; | |
79 | *len -= p2 - *p; | |
80 | *p = p2; | |
81 | return(ret); | |
82 | } | |
83 | ||
84 | char *vsprintf2(char *format, va_list al) | |
85 | { | |
86 | int ret; | |
87 | char *buf; | |
88 | va_list al2; | |
89 | ||
90 | va_copy(al2, al); | |
91 | ret = vsnprintf(NULL, 0, format, al2); | |
92 | va_end(al2); | |
93 | buf = smalloc(ret + 1); | |
94 | va_copy(al2, al); | |
95 | vsnprintf(buf, ret + 1, format, al2); | |
96 | va_end(al2); | |
97 | return(buf); | |
98 | } | |
99 | ||
100 | char *sprintf2(char *format, ...) | |
101 | { | |
102 | va_list args; | |
103 | char *buf; | |
104 | ||
105 | va_start(args, format); | |
106 | buf = vsprintf2(format, args); | |
107 | va_end(args); | |
108 | return(buf); | |
109 | } | |
110 | ||
111 | char *sprintf3(char *format, ...) | |
112 | { | |
113 | static char *buf = NULL; | |
114 | va_list args; | |
115 | ||
116 | if(buf != NULL) | |
117 | free(buf); | |
118 | va_start(args, format); | |
119 | buf = vsprintf2(format, args); | |
120 | va_end(args); | |
121 | return(buf); | |
122 | } | |
9aee4cbc FT |
123 | |
124 | off_t atoo(char *n) | |
125 | { | |
126 | return((off_t)strtoll(n, NULL, 10)); | |
127 | } | |
f2b26d44 FT |
128 | |
129 | char **tokenize(char *src) | |
130 | { | |
131 | char **ret; | |
132 | char *p, *p2, *n; | |
133 | int s, q, cl; | |
134 | ||
135 | p = src; | |
136 | s = 0; | |
137 | ret = NULL; | |
138 | while(1) { | |
139 | while(isspace(*p)) | |
140 | p++; | |
141 | if(!*p) | |
142 | break; | |
143 | p2 = p; | |
144 | q = 0; | |
145 | while(1) { | |
146 | if(q) { | |
147 | if(*p == '\"') | |
148 | q = 0; | |
149 | else if(*p == '\\') | |
150 | p++; | |
151 | } else { | |
152 | if(*p == '\"') | |
153 | q = 1; | |
154 | else if(isspace(*p) || !*p) | |
155 | break; | |
156 | else if(*p == '\\') | |
157 | p++; | |
158 | } | |
159 | p++; | |
160 | } | |
161 | cl = p - p2; | |
162 | n = memcpy(malloc(cl + 1), p2, cl); | |
163 | n[cl] = 0; | |
164 | for(p2 = n; *p2; cl--) { | |
165 | if(*p2 == '\\') { | |
166 | memmove(p2, p2 + 1, cl--); | |
167 | p2++; | |
168 | } else if(*p2 == '\"') { | |
169 | memmove(p2, p2 + 1, cl); | |
170 | } else { | |
171 | p2++; | |
172 | } | |
173 | } | |
174 | ret = realloc(ret, sizeof(char *) * (++s)); | |
175 | ret[s - 1] = n; | |
176 | } | |
177 | ret = realloc(ret, sizeof(char *) * (++s)); | |
178 | ret[s - 1] = NULL; | |
179 | return(ret); | |
180 | } | |
181 | ||
182 | void freeca(char **ca) | |
183 | { | |
184 | char **c; | |
185 | ||
06c1a718 FT |
186 | if(ca == NULL) |
187 | return; | |
f2b26d44 FT |
188 | for(c = ca; *c; c++) |
189 | free(*c); | |
190 | free(ca); | |
191 | } | |
d1bd343c FT |
192 | |
193 | int calen(char **a) | |
194 | { | |
195 | int i; | |
196 | ||
197 | for(i = 0; *a; a++, i++); | |
198 | return(i); | |
199 | } | |
d422fdfd FT |
200 | |
201 | void bvprintf(struct charbuf *buf, char *format, va_list al) | |
202 | { | |
203 | va_list al2; | |
204 | int ret; | |
205 | ||
206 | while(1) { | |
207 | va_copy(al2, al); | |
208 | ret = vsnprintf(buf->b + buf->d, buf->s - buf->d, format, al2); | |
209 | va_end(al2); | |
210 | if(ret < buf->s - buf->d) { | |
211 | buf->d += ret; | |
212 | return; | |
213 | } | |
214 | sizebuf(*buf, buf->d + ret + 1); | |
215 | } | |
216 | } | |
217 | ||
218 | void bprintf(struct charbuf *buf, char *format, ...) | |
219 | { | |
220 | va_list args; | |
221 | ||
222 | va_start(args, format); | |
223 | bvprintf(buf, format, args); | |
224 | va_end(args); | |
225 | } | |
5fc1bf9f FT |
226 | |
227 | void replstr(char **p, char *n) | |
228 | { | |
229 | char *tmp; | |
230 | ||
231 | tmp = *p; | |
232 | if(n) | |
233 | *p = sstrdup(n); | |
234 | else | |
235 | *p = NULL; | |
236 | if(tmp) | |
237 | free(tmp); | |
238 | } | |
be6e50bf FT |
239 | |
240 | char *base64encode(char *data, size_t datalen) | |
241 | { | |
242 | struct charbuf buf; | |
243 | ||
244 | if(datalen == 0) | |
245 | return(sstrdup("")); | |
246 | bufinit(buf); | |
247 | while(datalen >= 3) | |
248 | { | |
249 | bufadd(buf, base64set[(data[0] & 0xfc) >> 2]); | |
250 | bufadd(buf, base64set[((data[0] & 0x03) << 4) | ((data[1] & 0xf0) >> 4)]); | |
251 | bufadd(buf, base64set[((data[1] & 0x0f) << 2) | ((data[2] & 0xc0) >> 6)]); | |
252 | bufadd(buf, base64set[data[2] & 0x3f]); | |
253 | datalen -= 3; | |
254 | data += 3; | |
255 | } | |
256 | if(datalen == 1) | |
257 | { | |
258 | bufadd(buf, base64set[(data[0] & 0xfc) >> 2]); | |
259 | bufadd(buf, base64set[(data[0] & 0x03) << 4]); | |
260 | bufcat(buf, "==", 2); | |
261 | } | |
262 | if(datalen == 2) | |
263 | { | |
264 | bufadd(buf, base64set[(data[0] & 0xfc) >> 2]); | |
265 | bufadd(buf, base64set[((data[0] & 0x03) << 4) | ((data[1] & 0xf0) >> 4)]); | |
266 | bufadd(buf, base64set[(data[1] & 0x0f) << 2]); | |
267 | bufadd(buf, '='); | |
268 | } | |
269 | bufadd(buf, 0); | |
270 | return(buf.b); | |
271 | } | |
272 | ||
273 | char *base64decode(char *data, size_t *datalen) | |
274 | { | |
275 | int b, c; | |
276 | char cur; | |
277 | struct charbuf buf; | |
278 | ||
279 | bufinit(buf); | |
280 | cur = 0; | |
281 | b = 8; | |
282 | for(; *data > 0; data++) | |
283 | { | |
284 | c = (int)(unsigned char)*data; | |
285 | if(c == '=') | |
286 | break; | |
287 | if(c == '\n') | |
288 | continue; | |
289 | if(base64rev[c] == -1) | |
290 | { | |
291 | buffree(buf); | |
292 | return(NULL); | |
293 | } | |
294 | b -= 6; | |
295 | if(b <= 0) | |
296 | { | |
297 | cur |= base64rev[c] >> -b; | |
298 | bufadd(buf, cur); | |
299 | b += 8; | |
300 | cur = 0; | |
301 | } | |
302 | cur |= base64rev[c] << b; | |
303 | } | |
304 | if(datalen != NULL) | |
305 | *datalen = buf.d; | |
306 | bufadd(buf, 0); | |
307 | return(buf.b); | |
308 | } |