1 /* 2 * uhttpd - Tiny single-threaded httpd 3 * 4 * Copyright (C) 2010-2013 Jo-Philipp Wich <xm@subsignal.org> 5 * Copyright (C) 2013 Felix Fietkau <nbd@openwrt.org> 6 * 7 * Permission to use, copy, modify, and/or distribute this software for any 8 * purpose with or without fee is hereby granted, provided that the above 9 * copyright notice and this permission notice appear in all copies. 10 * 11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 15 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 16 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 17 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 18 */ 19 20 #ifndef _UHTTPD_UTILS_ 21 22 #include <sys/stat.h> 23 24 #include <stdarg.h> 25 #include <fcntl.h> 26 #include <pwd.h> 27 #include <stdio.h> 28 #include <string.h> 29 #include <errno.h> 30 #include <stdlib.h> 31 #include <alloca.h> 32 #include <time.h> 33 #include <unistd.h> 34 35 struct uh_addr { 36 uint8_t family; 37 uint16_t port; 38 union { 39 struct in_addr in; 40 struct in6_addr in6; 41 }; 42 }; 43 44 #define min(x, y) (((x) < (y)) ? (x) : (y)) 45 #define max(x, y) (((x) > (y)) ? (x) : (y)) 46 47 #define array_size(x) \ 48 (sizeof(x) / sizeof(x[0])) 49 50 #define fd_cloexec(fd) \ 51 fcntl(fd, F_SETFD, fcntl(fd, F_GETFD) | FD_CLOEXEC) 52 53 #ifdef __APPLE__ 54 static inline void clearenv(void) 55 { 56 extern char **environ; 57 *environ = NULL; 58 } 59 60 time_t timegm (struct tm *tm); 61 62 #endif 63 64 #ifdef __GNUC__ 65 #define __printf(a, b) __attribute__((format(printf, a, b))) 66 #else 67 #define __printf(a, b) 68 #endif 69 70 enum { /* chartypes flags */ 71 CT_ALPHA = (1 << 0), 72 CT_CTL = (1 << 1), 73 CT_DIGIT = (1 << 2), 74 CT_HEXDIG = (1 << 3), 75 CT_VCHAR = (1 << 4), 76 CT_WSP = (1 << 5), 77 CT_DELIM = (1 << 6), 78 CT_VDELIM = CT_DELIM | CT_VCHAR, 79 CT_VALPHA = CT_ALPHA | CT_VCHAR, 80 CT_XALPHA = CT_ALPHA | CT_HEXDIG | CT_VCHAR, 81 CT_XDIGIT = CT_DIGIT | CT_HEXDIG | CT_VCHAR, 82 }; 83 84 extern uint8_t chartypes[256]; 85 86 /* RFC 9110 character class helpers */ 87 #define uh_is_tchar(c) ((chartypes[(uint8_t)(c)] & (CT_VCHAR | CT_DELIM)) == CT_VCHAR) 88 #define uh_is_wsp(c) (chartypes[(uint8_t)(c)] & CT_WSP) 89 #define uh_is_ctl(c) (chartypes[(uint8_t)(c)] & CT_CTL) 90 #define uh_is_digit(c) (chartypes[(uint8_t)(c)] & CT_DIGIT) 91 #define uh_is_hexdig(c) (chartypes[(uint8_t)(c)] & CT_HEXDIG) 92 93 int uh_urldecode(char *buf, int blen, const char *src, int slen); 94 int uh_urlencode(char *buf, int blen, const char *src, int slen); 95 int uh_b64decode(char *buf, int blen, const void *src, int slen); 96 bool uh_path_match(const char *prefix, const char *url); 97 char *uh_split_header(char *str, size_t len); 98 bool uh_addr_rfc1918(struct uh_addr *addr); 99 char *uh_htmlescape(const char *src); 100 101 #endif 102
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