mirror of
https://github.com/nginx/nginx.git
synced 2024-12-15 21:39:00 +08:00
4d656dcd0b
*) Change: the invalid client header lines are now ignored and logged
at the info level.
*) Change: the server name is also logged in error log.
*) Feature: the ngx_http_auth_basic_module module and the auth_basic
and auth_basic_user_file directives.
838 lines
19 KiB
C
838 lines
19 KiB
C
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/*
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* Copyright (C) Igor Sysoev
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*/
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#include <ngx_config.h>
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#include <ngx_core.h>
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u_char *
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ngx_cpystrn(u_char *dst, u_char *src, size_t n)
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{
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if (n == 0) {
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return dst;
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}
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for (/* void */; --n; dst++, src++) {
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*dst = *src;
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if (*dst == '\0') {
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return dst;
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}
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}
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*dst = '\0';
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return dst;
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}
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u_char *
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ngx_pstrdup(ngx_pool_t *pool, ngx_str_t *src)
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{
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u_char *dst;
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dst = ngx_palloc(pool, src->len);
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if (dst == NULL) {
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return NULL;
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}
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ngx_memcpy(dst, src->data, src->len);
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return dst;
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}
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/*
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* supported formats:
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* %[0][width][x][X]O off_t
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* %[0][width]T time_t
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* %[0][width][u][x|X]z ssize_t/size_t
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* %[0][width][u][x|X]d int/u_int
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* %[0][width][u][x|X]l long
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* %[0][width|m][u][x|X]i ngx_int_t/ngx_uint_t
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* %[0][width][u][x|X]D int32_t/uint32_t
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* %[0][width][u][x|X]L int64_t/uint64_t
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* %[0][width|m][u][x|X]A ngx_atomic_int_t/ngx_atomic_uint_t
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* %P ngx_pid_t
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* %r rlim_t
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* %p pointer
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* %V pointer to ngx_str_t
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* %s null-terminated string
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* %Z '\0'
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* %c char
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* %% %
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*
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* TODO:
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* %M ngx_msec_t
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*
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* reserved:
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* %t ptrdiff_t
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* %S null-teminated wchar string
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* %C wchar
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*/
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u_char * ngx_cdecl
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ngx_sprintf(u_char *buf, const char *fmt, ...)
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{
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u_char *p;
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va_list args;
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va_start(args, fmt);
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p = ngx_vsnprintf(buf, /* STUB */ 65536, fmt, args);
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va_end(args);
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return p;
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}
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u_char * ngx_cdecl
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ngx_snprintf(u_char *buf, size_t max, const char *fmt, ...)
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{
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u_char *p;
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va_list args;
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va_start(args, fmt);
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p = ngx_vsnprintf(buf, max, fmt, args);
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va_end(args);
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return p;
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}
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u_char *
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ngx_vsnprintf(u_char *buf, size_t max, const char *fmt, va_list args)
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{
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u_char *p, zero, *last, temp[NGX_INT64_LEN + 1];
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/*
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* really we need temp[NGX_INT64_LEN] only,
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* but icc issues the warning
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*/
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int d;
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size_t len;
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uint32_t ui32;
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int64_t i64;
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uint64_t ui64;
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ngx_str_t *s;
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ngx_uint_t width, sign, hexadecimal, max_width;
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static u_char hex[] = "0123456789abcdef";
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static u_char HEX[] = "0123456789ABCDEF";
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if (max == 0) {
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return buf;
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}
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last = buf + max;
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while (*fmt && buf < last) {
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/*
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* "buf < last" means that we could copy at least one character:
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* the plain character, "%%", "%c", and minus without the checking
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*/
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if (*fmt == '%') {
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i64 = 0;
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ui64 = 0;
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zero = (u_char) ((*++fmt == '0') ? '0' : ' ');
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width = 0;
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sign = 1;
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hexadecimal = 0;
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max_width = 0;
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p = temp + NGX_INT64_LEN;
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while (*fmt >= '0' && *fmt <= '9') {
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width = width * 10 + *fmt++ - '0';
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}
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for ( ;; ) {
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switch (*fmt) {
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case 'u':
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sign = 0;
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fmt++;
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continue;
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case 'm':
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max_width = 1;
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fmt++;
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continue;
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case 'X':
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hexadecimal = 2;
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sign = 0;
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fmt++;
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continue;
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case 'x':
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hexadecimal = 1;
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sign = 0;
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fmt++;
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continue;
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default:
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break;
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}
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break;
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}
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switch (*fmt) {
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case 'V':
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s = va_arg(args, ngx_str_t *);
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len = (buf + s->len < last) ? s->len : (size_t) (last - buf);
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buf = ngx_cpymem(buf, s->data, len);
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fmt++;
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continue;
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case 's':
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p = va_arg(args, u_char *);
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while (*p && buf < last) {
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*buf++ = *p++;
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}
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fmt++;
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continue;
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case 'O':
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i64 = (int64_t) va_arg(args, off_t);
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sign = 1;
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break;
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case 'P':
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i64 = (int64_t) va_arg(args, ngx_pid_t);
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sign = 1;
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break;
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case 'T':
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i64 = (int64_t) va_arg(args, time_t);
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sign = 1;
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break;
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case 'z':
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if (sign) {
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i64 = (int64_t) va_arg(args, ssize_t);
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} else {
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ui64 = (uint64_t) va_arg(args, size_t);
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}
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break;
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case 'i':
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if (sign) {
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i64 = (int64_t) va_arg(args, ngx_int_t);
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} else {
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ui64 = (uint64_t) va_arg(args, ngx_uint_t);
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}
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if (max_width) {
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width = NGX_INT_T_LEN;
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}
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break;
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case 'd':
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if (sign) {
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i64 = (int64_t) va_arg(args, int);
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} else {
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ui64 = (uint64_t) va_arg(args, u_int);
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}
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break;
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case 'l':
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if (sign) {
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i64 = (int64_t) va_arg(args, long);
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} else {
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ui64 = (uint64_t) va_arg(args, u_long);
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}
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break;
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case 'D':
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if (sign) {
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i64 = (int64_t) va_arg(args, int32_t);
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} else {
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ui64 = (uint64_t) va_arg(args, uint32_t);
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}
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break;
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case 'L':
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if (sign) {
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i64 = va_arg(args, int64_t);
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} else {
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ui64 = va_arg(args, uint64_t);
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}
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break;
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case 'A':
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if (sign) {
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i64 = (int64_t) va_arg(args, ngx_atomic_int_t);
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} else {
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ui64 = (uint64_t) va_arg(args, ngx_atomic_uint_t);
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}
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if (max_width) {
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width = NGX_ATOMIC_T_LEN;
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}
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break;
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#if !(NGX_WIN32)
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case 'r':
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i64 = (int64_t) va_arg(args, rlim_t);
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sign = 1;
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break;
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#endif
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case 'p':
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ui64 = (uintptr_t) va_arg(args, void *);
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hexadecimal = 2;
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sign = 0;
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zero = '0';
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width = 8;
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break;
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case 'c':
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d = va_arg(args, int);
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*buf++ = (u_char) (d & 0xff);
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fmt++;
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continue;
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case 'Z':
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*buf++ = '\0';
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fmt++;
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continue;
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case '%':
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*buf++ = '%';
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fmt++;
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continue;
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default:
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*buf++ = *fmt++;
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continue;
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}
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if (sign) {
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if (i64 < 0) {
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*buf++ = '-';
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ui64 = (uint64_t) -i64;
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} else {
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ui64 = (uint64_t) i64;
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}
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}
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if (hexadecimal == 1) {
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do {
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/* the "(uint32_t)" cast disables the BCC's warning */
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*--p = hex[(uint32_t) (ui64 & 0xf)];
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} while (ui64 >>= 4);
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} else if (hexadecimal == 2) {
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do {
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/* the "(uint32_t)" cast disables the BCC's warning */
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*--p = HEX[(uint32_t) (ui64 & 0xf)];
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} while (ui64 >>= 4);
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} else if (ui64 <= NGX_MAX_UINT32_VALUE) {
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/*
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* To divide 64-bit number and to find the remainder
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* on the x86 platform gcc and icc call the libc functions
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* [u]divdi3() and [u]moddi3(), they call another function
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* in its turn. On FreeBSD it is the qdivrem() function,
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* its source code is about 170 lines of the code.
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* The glibc counterpart is about 150 lines of the code.
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*
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* For 32-bit numbers and some divisors gcc and icc use
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* the inlined multiplication and shifts. For example,
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* unsigned "i32 / 10" is compiled to
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*
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* (i32 * 0xCCCCCCCD) >> 35
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*/
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ui32 = (uint32_t) ui64;
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do {
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*--p = (u_char) (ui32 % 10 + '0');
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} while (ui32 /= 10);
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} else {
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do {
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*--p = (u_char) (ui64 % 10 + '0');
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} while (ui64 /= 10);
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}
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len = (temp + NGX_INT64_LEN) - p;
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while (len++ < width && buf < last) {
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*buf++ = zero;
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}
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len = (temp + NGX_INT64_LEN) - p;
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if (buf + len > last) {
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len = last - buf;
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}
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buf = ngx_cpymem(buf, p, len);
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fmt++;
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} else {
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*buf++ = *fmt++;
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}
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}
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return buf;
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}
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ngx_int_t
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ngx_rstrncmp(u_char *s1, u_char *s2, size_t n)
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{
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if (n == 0) {
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return 0;
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}
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n--;
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for ( ;; ) {
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if (s1[n] != s2[n]) {
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return s1[n] - s2[n];
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}
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if (n == 0) {
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return 0;
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}
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n--;
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}
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}
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ngx_int_t
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ngx_rstrncasecmp(u_char *s1, u_char *s2, size_t n)
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{
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u_char c1, c2;
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if (n == 0) {
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return 0;
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}
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n--;
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for ( ;; ) {
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c1 = s1[n];
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if (c1 >= 'a' && c1 <= 'z') {
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c1 -= 'a' - 'A';
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}
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c2 = s2[n];
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if (c2 >= 'a' && c2 <= 'z') {
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c2 -= 'a' - 'A';
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}
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if (c1 != c2) {
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return c1 - c2;
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}
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if (n == 0) {
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return 0;
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}
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n--;
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}
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}
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ngx_int_t
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ngx_atoi(u_char *line, size_t n)
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{
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ngx_int_t value;
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if (n == 0) {
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return NGX_ERROR;
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}
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for (value = 0; n--; line++) {
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if (*line < '0' || *line > '9') {
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return NGX_ERROR;
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}
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value = value * 10 + (*line - '0');
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}
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if (value < 0) {
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return NGX_ERROR;
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} else {
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return value;
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}
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}
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ssize_t
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ngx_atosz(u_char *line, size_t n)
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{
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ssize_t value;
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if (n == 0) {
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return NGX_ERROR;
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}
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for (value = 0; n--; line++) {
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if (*line < '0' || *line > '9') {
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return NGX_ERROR;
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}
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value = value * 10 + (*line - '0');
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}
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if (value < 0) {
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return NGX_ERROR;
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} else {
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return value;
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}
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}
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off_t
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ngx_atoof(u_char *line, size_t n)
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{
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off_t value;
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if (n == 0) {
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return NGX_ERROR;
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}
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for (value = 0; n--; line++) {
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if (*line < '0' || *line > '9') {
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return NGX_ERROR;
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}
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value = value * 10 + (*line - '0');
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}
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if (value < 0) {
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return NGX_ERROR;
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} else {
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return value;
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}
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}
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time_t
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ngx_atotm(u_char *line, size_t n)
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{
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time_t value;
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if (n == 0) {
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return NGX_ERROR;
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}
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for (value = 0; n--; line++) {
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if (*line < '0' || *line > '9') {
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return NGX_ERROR;
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}
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value = value * 10 + (*line - '0');
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}
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if (value < 0) {
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return NGX_ERROR;
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} else {
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return value;
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}
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}
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ngx_int_t
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ngx_hextoi(u_char *line, size_t n)
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{
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u_char ch;
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ngx_int_t value;
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if (n == 0) {
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return NGX_ERROR;
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}
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for (value = 0; n--; line++) {
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ch = *line;
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if (ch >= '0' && ch <= '9') {
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value = value * 16 + (ch - '0');
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continue;
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}
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if (ch >= 'A' && ch <= 'F') {
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value = value * 16 + (ch - 'A' + 10);
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continue;
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}
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if (ch >= 'a' && ch <= 'f') {
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value = value * 16 + (ch - 'a' + 10);
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continue;
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}
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return NGX_ERROR;
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}
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if (value < 0) {
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return NGX_ERROR;
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} else {
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return value;
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}
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}
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void
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ngx_md5_text(u_char *text, u_char *md5)
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{
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int i;
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static u_char hex[] = "0123456789abcdef";
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for (i = 0; i < 16; i++) {
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*text++ = hex[md5[i] >> 4];
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*text++ = hex[md5[i] & 0xf];
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}
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*text = '\0';
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}
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void
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ngx_encode_base64(ngx_str_t *dst, ngx_str_t *src)
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{
|
|
u_char *d, *s;
|
|
size_t len;
|
|
static u_char basis64[] =
|
|
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
|
|
|
|
len = src->len;
|
|
s = src->data;
|
|
d = dst->data;
|
|
|
|
while (len > 2) {
|
|
*d++ = basis64[(s[0] >> 2) & 0x3f];
|
|
*d++ = basis64[((s[0] & 3) << 4) | (s[1] >> 4)];
|
|
*d++ = basis64[((s[1] & 0x0f) << 2) | (s[2] >> 6)];
|
|
*d++ = basis64[s[2] & 0x3f];
|
|
|
|
s += 3;
|
|
len -= 3;
|
|
}
|
|
|
|
if (len) {
|
|
*d++ = basis64[(s[0] >> 2) & 0x3f];
|
|
|
|
if (len == 1) {
|
|
*d++ = basis64[(s[0] & 3) << 4];
|
|
*d++ = '=';
|
|
|
|
} else {
|
|
*d++ = basis64[((s[0] & 3) << 4) | (s[1] >> 4)];
|
|
*d++ = basis64[(s[1] & 0x0f) << 2];
|
|
}
|
|
|
|
*d++ = '=';
|
|
}
|
|
|
|
dst->len = d - dst->data;
|
|
}
|
|
|
|
|
|
ngx_int_t
|
|
ngx_decode_base64(ngx_str_t *dst, ngx_str_t *src)
|
|
{
|
|
size_t len;
|
|
u_char *d, *s;
|
|
static u_char basis64[] =
|
|
{ 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77,
|
|
77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77,
|
|
77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 62, 77, 77, 77, 63,
|
|
52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 77, 77, 77, 77, 77, 77,
|
|
77, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
|
|
15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 77, 77, 77, 77, 77,
|
|
77, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40,
|
|
41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 77, 77, 77, 77, 77,
|
|
|
|
77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77,
|
|
77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77,
|
|
77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77,
|
|
77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77,
|
|
77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77,
|
|
77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77,
|
|
77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77,
|
|
77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77 };
|
|
|
|
for (len = 0; len < src->len; len++) {
|
|
if (src->data[len] == '=') {
|
|
break;
|
|
}
|
|
|
|
if (basis64[src->data[len]] == 77) {
|
|
return NGX_ERROR;
|
|
}
|
|
}
|
|
|
|
if (len % 4 == 1) {
|
|
return NGX_ERROR;
|
|
}
|
|
|
|
s = src->data;
|
|
d = dst->data;
|
|
|
|
while (len > 3) {
|
|
*d++ = (u_char) (basis64[s[0]] << 2 | basis64[s[1]] >> 4);
|
|
*d++ = (u_char) (basis64[s[1]] << 4 | basis64[s[2]] >> 2);
|
|
*d++ = (u_char) (basis64[s[2]] << 6 | basis64[s[3]]);
|
|
|
|
s += 4;
|
|
len -= 4;
|
|
}
|
|
|
|
if (len > 1) {
|
|
*d++ = (u_char) (basis64[s[0]] << 2 | basis64[s[1]] >> 4);
|
|
}
|
|
|
|
if (len > 2) {
|
|
*d++ = (u_char) (basis64[s[1]] << 4 | basis64[s[2]] >> 2);
|
|
}
|
|
|
|
dst->len = d - dst->data;
|
|
|
|
return NGX_OK;
|
|
}
|
|
|
|
|
|
uintptr_t
|
|
ngx_escape_uri(u_char *dst, u_char *src, size_t size, ngx_uint_t type)
|
|
{
|
|
ngx_uint_t i, n;
|
|
uint32_t *escape;
|
|
static u_char hex[] = "0123456789abcdef";
|
|
|
|
/* " ", "#", "%", "?", %00-%1F, %7F-%FF */
|
|
|
|
static uint32_t uri[] =
|
|
{ 0xffffffff, /* 1111 1111 1111 1111 1111 1111 1111 1111 */
|
|
|
|
/* ?>=< ;:98 7654 3210 /.-, +*)( '&%$ #"! */
|
|
0x80000029, /* 1000 0000 0000 0000 0000 0000 0010 1001 */
|
|
|
|
/* _^]\ [ZYX WVUT SRQP ONML KJIH GFED CBA@ */
|
|
0x00000000, /* 0000 0000 0000 0000 0000 0000 0000 0000 */
|
|
|
|
/* ~}| {zyx wvut srqp onml kjih gfed cba` */
|
|
0x80000000, /* 1000 0000 0000 0000 0000 0000 0000 0000 */
|
|
|
|
0xffffffff, /* 1111 1111 1111 1111 1111 1111 1111 1111 */
|
|
0xffffffff, /* 1111 1111 1111 1111 1111 1111 1111 1111 */
|
|
0xffffffff, /* 1111 1111 1111 1111 1111 1111 1111 1111 */
|
|
0xffffffff /* 1111 1111 1111 1111 1111 1111 1111 1111 */ };
|
|
|
|
/* " ", "#", "%", "+", "?", %00-%1F, %7F-%FF */
|
|
|
|
static uint32_t args[] =
|
|
{ 0xffffffff, /* 1111 1111 1111 1111 1111 1111 1111 1111 */
|
|
|
|
/* ?>=< ;:98 7654 3210 /.-, +*)( '&%$ #"! */
|
|
0x80000829, /* 1000 0000 0000 0000 0000 1000 0010 1001 */
|
|
|
|
/* _^]\ [ZYX WVUT SRQP ONML KJIH GFED CBA@ */
|
|
0x00000000, /* 0000 0000 0000 0000 0000 0000 0000 0000 */
|
|
|
|
/* ~}| {zyx wvut srqp onml kjih gfed cba` */
|
|
0x80000000, /* 1000 0000 0000 0000 0000 0000 0000 0000 */
|
|
|
|
0xffffffff, /* 1111 1111 1111 1111 1111 1111 1111 1111 */
|
|
0xffffffff, /* 1111 1111 1111 1111 1111 1111 1111 1111 */
|
|
0xffffffff, /* 1111 1111 1111 1111 1111 1111 1111 1111 */
|
|
0xffffffff /* 1111 1111 1111 1111 1111 1111 1111 1111 */ };
|
|
|
|
/* " ", """, "%", "'", %00-%1F, %7F-%FF */
|
|
|
|
static uint32_t html[] =
|
|
{ 0xffffffff, /* 1111 1111 1111 1111 1111 1111 1111 1111 */
|
|
|
|
/* ?>=< ;:98 7654 3210 /.-, +*)( '&%$ #"! */
|
|
0x800000ad, /* 0000 0000 0000 0000 0000 0000 1010 1101 */
|
|
|
|
/* _^]\ [ZYX WVUT SRQP ONML KJIH GFED CBA@ */
|
|
0x00000000, /* 0000 0000 0000 0000 0000 0000 0000 0000 */
|
|
|
|
/* ~}| {zyx wvut srqp onml kjih gfed cba` */
|
|
0x80000000, /* 1000 0000 0000 0000 0000 0000 0000 0000 */
|
|
|
|
0xffffffff, /* 1111 1111 1111 1111 1111 1111 1111 1111 */
|
|
0xffffffff, /* 1111 1111 1111 1111 1111 1111 1111 1111 */
|
|
0xffffffff, /* 1111 1111 1111 1111 1111 1111 1111 1111 */
|
|
0xffffffff /* 1111 1111 1111 1111 1111 1111 1111 1111 */ };
|
|
|
|
|
|
switch (type) {
|
|
case NGX_ESCAPE_HTML:
|
|
escape = html;
|
|
break;
|
|
case NGX_ESCAPE_ARGS:
|
|
escape = args;
|
|
break;
|
|
default:
|
|
escape = uri;
|
|
break;
|
|
}
|
|
|
|
if (dst == NULL) {
|
|
|
|
/* find the number of the characters to be escaped */
|
|
|
|
n = 0;
|
|
|
|
for (i = 0; i < size; i++) {
|
|
if (escape[*src >> 5] & (1 << (*src & 0x1f))) {
|
|
n++;
|
|
}
|
|
src++;
|
|
}
|
|
|
|
return (uintptr_t) n;
|
|
}
|
|
|
|
for (i = 0; i < size; i++) {
|
|
if (escape[*src >> 5] & (1 << (*src & 0x1f))) {
|
|
*dst++ = '%';
|
|
*dst++ = hex[*src >> 4];
|
|
*dst++ = hex[*src & 0xf];
|
|
src++;
|
|
|
|
} else {
|
|
*dst++ = *src++;
|
|
}
|
|
}
|
|
|
|
return (uintptr_t) dst;
|
|
}
|