| 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> |
| 20 | #include <stdio.h> |
| 21 | #include <string.h> |
| 22 | #include <ctype.h> |
| 23 | |
| 24 | #ifdef HAVE_CONFIG_H |
| 25 | #include <config.h> |
| 26 | #endif |
| 27 | #include <utils.h> |
| 28 | |
| 29 | void _sizebuf(struct buffer *buf, size_t wanted, size_t el) |
| 30 | { |
| 31 | size_t n; |
| 32 | |
| 33 | n = buf->s; |
| 34 | if(n == 0) |
| 35 | n = 1; |
| 36 | while(n < wanted) |
| 37 | n <<= 1; |
| 38 | if(n <= buf->s) |
| 39 | return; |
| 40 | if(buf->b != NULL) |
| 41 | buf->b = srealloc(buf->b, n * el); |
| 42 | else |
| 43 | buf->b = smalloc(n * el); |
| 44 | buf->s = n; |
| 45 | } |
| 46 | |
| 47 | char *decstr(char **p, size_t *len) |
| 48 | { |
| 49 | char *p2, *ret; |
| 50 | |
| 51 | for(p2 = *p; (p2 - *p) < *len; p2++) { |
| 52 | if(*p2 == 0) |
| 53 | break; |
| 54 | } |
| 55 | if((p2 - *p) == *len) |
| 56 | return(NULL); |
| 57 | p2++; |
| 58 | ret = *p; |
| 59 | *len -= p2 - *p; |
| 60 | *p = p2; |
| 61 | return(ret); |
| 62 | } |
| 63 | |
| 64 | char *vsprintf2(char *format, va_list al) |
| 65 | { |
| 66 | int ret; |
| 67 | char *buf; |
| 68 | va_list al2; |
| 69 | |
| 70 | va_copy(al2, al); |
| 71 | ret = vsnprintf(NULL, 0, format, al2); |
| 72 | va_end(al2); |
| 73 | buf = smalloc(ret + 1); |
| 74 | va_copy(al2, al); |
| 75 | vsnprintf(buf, ret + 1, format, al2); |
| 76 | va_end(al2); |
| 77 | return(buf); |
| 78 | } |
| 79 | |
| 80 | char *sprintf2(char *format, ...) |
| 81 | { |
| 82 | va_list args; |
| 83 | char *buf; |
| 84 | |
| 85 | va_start(args, format); |
| 86 | buf = vsprintf2(format, args); |
| 87 | va_end(args); |
| 88 | return(buf); |
| 89 | } |
| 90 | |
| 91 | char *sprintf3(char *format, ...) |
| 92 | { |
| 93 | static char *buf = NULL; |
| 94 | va_list args; |
| 95 | |
| 96 | if(buf != NULL) |
| 97 | free(buf); |
| 98 | va_start(args, format); |
| 99 | buf = vsprintf2(format, args); |
| 100 | va_end(args); |
| 101 | return(buf); |
| 102 | } |
| 103 | |
| 104 | off_t atoo(char *n) |
| 105 | { |
| 106 | return((off_t)strtoll(n, NULL, 10)); |
| 107 | } |
| 108 | |
| 109 | char **tokenize(char *src) |
| 110 | { |
| 111 | char **ret; |
| 112 | char *p, *p2, *n; |
| 113 | int s, q, cl; |
| 114 | |
| 115 | p = src; |
| 116 | s = 0; |
| 117 | ret = NULL; |
| 118 | while(1) { |
| 119 | while(isspace(*p)) |
| 120 | p++; |
| 121 | if(!*p) |
| 122 | break; |
| 123 | p2 = p; |
| 124 | q = 0; |
| 125 | while(1) { |
| 126 | if(q) { |
| 127 | if(*p == '\"') |
| 128 | q = 0; |
| 129 | else if(*p == '\\') |
| 130 | p++; |
| 131 | } else { |
| 132 | if(*p == '\"') |
| 133 | q = 1; |
| 134 | else if(isspace(*p) || !*p) |
| 135 | break; |
| 136 | else if(*p == '\\') |
| 137 | p++; |
| 138 | } |
| 139 | p++; |
| 140 | } |
| 141 | cl = p - p2; |
| 142 | n = memcpy(malloc(cl + 1), p2, cl); |
| 143 | n[cl] = 0; |
| 144 | for(p2 = n; *p2; cl--) { |
| 145 | if(*p2 == '\\') { |
| 146 | memmove(p2, p2 + 1, cl--); |
| 147 | p2++; |
| 148 | } else if(*p2 == '\"') { |
| 149 | memmove(p2, p2 + 1, cl); |
| 150 | } else { |
| 151 | p2++; |
| 152 | } |
| 153 | } |
| 154 | ret = realloc(ret, sizeof(char *) * (++s)); |
| 155 | ret[s - 1] = n; |
| 156 | } |
| 157 | ret = realloc(ret, sizeof(char *) * (++s)); |
| 158 | ret[s - 1] = NULL; |
| 159 | return(ret); |
| 160 | } |
| 161 | |
| 162 | void freeca(char **ca) |
| 163 | { |
| 164 | char **c; |
| 165 | |
| 166 | if(ca == NULL) |
| 167 | return; |
| 168 | for(c = ca; *c; c++) |
| 169 | free(*c); |
| 170 | free(ca); |
| 171 | } |
| 172 | |
| 173 | int calen(char **a) |
| 174 | { |
| 175 | int i; |
| 176 | |
| 177 | for(i = 0; *a; a++, i++); |
| 178 | return(i); |
| 179 | } |
| 180 | |
| 181 | void bvprintf(struct charbuf *buf, char *format, va_list al) |
| 182 | { |
| 183 | va_list al2; |
| 184 | int ret; |
| 185 | |
| 186 | while(1) { |
| 187 | va_copy(al2, al); |
| 188 | ret = vsnprintf(buf->b + buf->d, buf->s - buf->d, format, al2); |
| 189 | va_end(al2); |
| 190 | if(ret < buf->s - buf->d) { |
| 191 | buf->d += ret; |
| 192 | return; |
| 193 | } |
| 194 | sizebuf(*buf, buf->d + ret + 1); |
| 195 | } |
| 196 | } |
| 197 | |
| 198 | void bprintf(struct charbuf *buf, char *format, ...) |
| 199 | { |
| 200 | va_list args; |
| 201 | |
| 202 | va_start(args, format); |
| 203 | bvprintf(buf, format, args); |
| 204 | va_end(args); |
| 205 | } |
| 206 | |
| 207 | void replstr(char **p, char *n) |
| 208 | { |
| 209 | char *tmp; |
| 210 | |
| 211 | tmp = *p; |
| 212 | if(n) |
| 213 | *p = sstrdup(n); |
| 214 | else |
| 215 | *p = NULL; |
| 216 | if(tmp) |
| 217 | free(tmp); |
| 218 | } |