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src/core/ngx_string.c - nginx-1.7.10
Functions defined
Source code
- #include <ngx_config.h>
- #include <ngx_core.h>
- static u_char *ngx_sprintf_num(u_char *buf, u_char *last, uint64_t ui64,
- u_char zero, ngx_uint_t hexadecimal, ngx_uint_t width);
- static void ngx_encode_base64_internal(ngx_str_t *dst, ngx_str_t *src,
- const u_char *basis, ngx_uint_t padding);
- static ngx_int_t ngx_decode_base64_internal(ngx_str_t *dst, ngx_str_t *src,
- const u_char *basis);
- void
- ngx_strlow(u_char *dst, u_char *src, size_t n)
- {
- while (n) {
- *dst = ngx_tolower(*src);
- dst++;
- src++;
- n--;
- }
- }
- u_char *
- ngx_cpystrn(u_char *dst, u_char *src, size_t n)
- {
- if (n == 0) {
- return dst;
- }
- while (--n) {
- *dst = *src;
- if (*dst == '\0') {
- return dst;
- }
- dst++;
- src++;
- }
- *dst = '\0';
- return dst;
- }
- u_char *
- ngx_pstrdup(ngx_pool_t *pool, ngx_str_t *src)
- {
- u_char *dst;
- dst = ngx_pnalloc(pool, src->len);
- if (dst == NULL) {
- return NULL;
- }
- ngx_memcpy(dst, src->data, src->len);
- return dst;
- }
- u_char * ngx_cdecl
- ngx_sprintf(u_char *buf, const char *fmt, ...)
- {
- u_char *p;
- va_list args;
- va_start(args, fmt);
- p = ngx_vslprintf(buf, (void *) -1, fmt, args);
- va_end(args);
- return p;
- }
- u_char * ngx_cdecl
- ngx_snprintf(u_char *buf, size_t max, const char *fmt, ...)
- {
- u_char *p;
- va_list args;
- va_start(args, fmt);
- p = ngx_vslprintf(buf, buf + max, fmt, args);
- va_end(args);
- return p;
- }
- u_char * ngx_cdecl
- ngx_slprintf(u_char *buf, u_char *last, const char *fmt, ...)
- {
- u_char *p;
- va_list args;
- va_start(args, fmt);
- p = ngx_vslprintf(buf, last, fmt, args);
- va_end(args);
- return p;
- }
- u_char *
- ngx_vslprintf(u_char *buf, u_char *last, const char *fmt, va_list args)
- {
- u_char *p, zero;
- int d;
- double f;
- size_t len, slen;
- int64_t i64;
- uint64_t ui64, frac;
- ngx_msec_t ms;
- ngx_uint_t width, sign, hex, max_width, frac_width, scale, n;
- ngx_str_t *v;
- ngx_variable_value_t *vv;
- while (*fmt && buf < last) {
-
- if (*fmt == '%') {
- i64 = 0;
- ui64 = 0;
- zero = (u_char) ((*++fmt == '0') ? '0' : ' ');
- width = 0;
- sign = 1;
- hex = 0;
- max_width = 0;
- frac_width = 0;
- slen = (size_t) -1;
- while (*fmt >= '0' && *fmt <= '9') {
- width = width * 10 + *fmt++ - '0';
- }
- for ( ;; ) {
- switch (*fmt) {
- case 'u':
- sign = 0;
- fmt++;
- continue;
- case 'm':
- max_width = 1;
- fmt++;
- continue;
- case 'X':
- hex = 2;
- sign = 0;
- fmt++;
- continue;
- case 'x':
- hex = 1;
- sign = 0;
- fmt++;
- continue;
- case '.':
- fmt++;
- while (*fmt >= '0' && *fmt <= '9') {
- frac_width = frac_width * 10 + *fmt++ - '0';
- }
- break;
- case '*':
- slen = va_arg(args, size_t);
- fmt++;
- continue;
- default:
- break;
- }
- break;
- }
- switch (*fmt) {
- case 'V':
- v = va_arg(args, ngx_str_t *);
- len = ngx_min(((size_t) (last - buf)), v->len);
- buf = ngx_cpymem(buf, v->data, len);
- fmt++;
- continue;
- case 'v':
- vv = va_arg(args, ngx_variable_value_t *);
- len = ngx_min(((size_t) (last - buf)), vv->len);
- buf = ngx_cpymem(buf, vv->data, len);
- fmt++;
- continue;
- case 's':
- p = va_arg(args, u_char *);
- if (slen == (size_t) -1) {
- while (*p && buf < last) {
- *buf++ = *p++;
- }
- } else {
- len = ngx_min(((size_t) (last - buf)), slen);
- buf = ngx_cpymem(buf, p, len);
- }
- fmt++;
- continue;
- case 'O':
- i64 = (int64_t) va_arg(args, off_t);
- sign = 1;
- break;
- case 'P':
- i64 = (int64_t) va_arg(args, ngx_pid_t);
- sign = 1;
- break;
- case 'T':
- i64 = (int64_t) va_arg(args, time_t);
- sign = 1;
- break;
- case 'M':
- ms = (ngx_msec_t) va_arg(args, ngx_msec_t);
- if ((ngx_msec_int_t) ms == -1) {
- sign = 1;
- i64 = -1;
- } else {
- sign = 0;
- ui64 = (uint64_t) ms;
- }
- break;
- case 'z':
- if (sign) {
- i64 = (int64_t) va_arg(args, ssize_t);
- } else {
- ui64 = (uint64_t) va_arg(args, size_t);
- }
- break;
- case 'i':
- if (sign) {
- i64 = (int64_t) va_arg(args, ngx_int_t);
- } else {
- ui64 = (uint64_t) va_arg(args, ngx_uint_t);
- }
- if (max_width) {
- width = NGX_INT_T_LEN;
- }
- break;
- case 'd':
- if (sign) {
- i64 = (int64_t) va_arg(args, int);
- } else {
- ui64 = (uint64_t) va_arg(args, u_int);
- }
- break;
- case 'l':
- if (sign) {
- i64 = (int64_t) va_arg(args, long);
- } else {
- ui64 = (uint64_t) va_arg(args, u_long);
- }
- break;
- case 'D':
- if (sign) {
- i64 = (int64_t) va_arg(args, int32_t);
- } else {
- ui64 = (uint64_t) va_arg(args, uint32_t);
- }
- break;
- case 'L':
- if (sign) {
- i64 = va_arg(args, int64_t);
- } else {
- ui64 = va_arg(args, uint64_t);
- }
- break;
- case 'A':
- if (sign) {
- i64 = (int64_t) va_arg(args, ngx_atomic_int_t);
- } else {
- ui64 = (uint64_t) va_arg(args, ngx_atomic_uint_t);
- }
- if (max_width) {
- width = NGX_ATOMIC_T_LEN;
- }
- break;
- case 'f':
- f = va_arg(args, double);
- if (f < 0) {
- *buf++ = '-';
- f = -f;
- }
- ui64 = (int64_t) f;
- frac = 0;
- if (frac_width) {
- scale = 1;
- for (n = frac_width; n; n--) {
- scale *= 10;
- }
- frac = (uint64_t) ((f - (double) ui64) * scale + 0.5);
- if (frac == scale) {
- ui64++;
- frac = 0;
- }
- }
- buf = ngx_sprintf_num(buf, last, ui64, zero, 0, width);
- if (frac_width) {
- if (buf < last) {
- *buf++ = '.';
- }
- buf = ngx_sprintf_num(buf, last, frac, '0', 0, frac_width);
- }
- fmt++;
- continue;
- #if !(NGX_WIN32)
- case 'r':
- i64 = (int64_t) va_arg(args, rlim_t);
- sign = 1;
- break;
- #endif
- case 'p':
- ui64 = (uintptr_t) va_arg(args, void *);
- hex = 2;
- sign = 0;
- zero = '0';
- width = NGX_PTR_SIZE * 2;
- break;
- case 'c':
- d = va_arg(args, int);
- *buf++ = (u_char) (d & 0xff);
- fmt++;
- continue;
- case 'Z':
- *buf++ = '\0';
- fmt++;
- continue;
- case 'N':
- #if (NGX_WIN32)
- *buf++ = CR;
- if (buf < last) {
- *buf++ = LF;
- }
- #else
- *buf++ = LF;
- #endif
- fmt++;
- continue;
- case '%':
- *buf++ = '%';
- fmt++;
- continue;
- default:
- *buf++ = *fmt++;
- continue;
- }
- if (sign) {
- if (i64 < 0) {
- *buf++ = '-';
- ui64 = (uint64_t) -i64;
- } else {
- ui64 = (uint64_t) i64;
- }
- }
- buf = ngx_sprintf_num(buf, last, ui64, zero, hex, width);
- fmt++;
- } else {
- *buf++ = *fmt++;
- }
- }
- return buf;
- }
- static u_char *
- ngx_sprintf_num(u_char *buf, u_char *last, uint64_t ui64, u_char zero,
- ngx_uint_t hexadecimal, ngx_uint_t width)
- {
- u_char *p, temp[NGX_INT64_LEN + 1];
-
- size_t len;
- uint32_t ui32;
- static u_char hex[] = "0123456789abcdef";
- static u_char HEX[] = "0123456789ABCDEF";
- p = temp + NGX_INT64_LEN;
- if (hexadecimal == 0) {
- if (ui64 <= (uint64_t) NGX_MAX_UINT32_VALUE) {
-
- ui32 = (uint32_t) ui64;
- do {
- *--p = (u_char) (ui32 % 10 + '0');
- } while (ui32 /= 10);
- } else {
- do {
- *--p = (u_char) (ui64 % 10 + '0');
- } while (ui64 /= 10);
- }
- } else if (hexadecimal == 1) {
- do {
-
- *--p = hex[(uint32_t) (ui64 & 0xf)];
- } while (ui64 >>= 4);
- } else {
- do {
-
- *--p = HEX[(uint32_t) (ui64 & 0xf)];
- } while (ui64 >>= 4);
- }
-
- len = (temp + NGX_INT64_LEN) - p;
- while (len++ < width && buf < last) {
- *buf++ = zero;
- }
-
- len = (temp + NGX_INT64_LEN) - p;
- if (buf + len > last) {
- len = last - buf;
- }
- return ngx_cpymem(buf, p, len);
- }
- ngx_int_t
- ngx_strcasecmp(u_char *s1, u_char *s2)
- {
- ngx_uint_t c1, c2;
- for ( ;; ) {
- c1 = (ngx_uint_t) *s1++;
- c2 = (ngx_uint_t) *s2++;
- c1 = (c1 >= 'A' && c1 <= 'Z') ? (c1 | 0x20) : c1;
- c2 = (c2 >= 'A' && c2 <= 'Z') ? (c2 | 0x20) : c2;
- if (c1 == c2) {
- if (c1) {
- continue;
- }
- return 0;
- }
- return c1 - c2;
- }
- }
- ngx_int_t
- ngx_strncasecmp(u_char *s1, u_char *s2, size_t n)
- {
- ngx_uint_t c1, c2;
- while (n) {
- c1 = (ngx_uint_t) *s1++;
- c2 = (ngx_uint_t) *s2++;
- c1 = (c1 >= 'A' && c1 <= 'Z') ? (c1 | 0x20) : c1;
- c2 = (c2 >= 'A' && c2 <= 'Z') ? (c2 | 0x20) : c2;
- if (c1 == c2) {
- if (c1) {
- n--;
- continue;
- }
- return 0;
- }
- return c1 - c2;
- }
- return 0;
- }
- u_char *
- ngx_strnstr(u_char *s1, char *s2, size_t len)
- {
- u_char c1, c2;
- size_t n;
- c2 = *(u_char *) s2++;
- n = ngx_strlen(s2);
- do {
- do {
- if (len-- == 0) {
- return NULL;
- }
- c1 = *s1++;
- if (c1 == 0) {
- return NULL;
- }
- } while (c1 != c2);
- if (n > len) {
- return NULL;
- }
- } while (ngx_strncmp(s1, (u_char *) s2, n) != 0);
- return --s1;
- }
- u_char *
- ngx_strstrn(u_char *s1, char *s2, size_t n)
- {
- u_char c1, c2;
- c2 = *(u_char *) s2++;
- do {
- do {
- c1 = *s1++;
- if (c1 == 0) {
- return NULL;
- }
- } while (c1 != c2);
- } while (ngx_strncmp(s1, (u_char *) s2, n) != 0);
- return --s1;
- }
- u_char *
- ngx_strcasestrn(u_char *s1, char *s2, size_t n)
- {
- ngx_uint_t c1, c2;
- c2 = (ngx_uint_t) *s2++;
- c2 = (c2 >= 'A' && c2 <= 'Z') ? (c2 | 0x20) : c2;
- do {
- do {
- c1 = (ngx_uint_t) *s1++;
- if (c1 == 0) {
- return NULL;
- }
- c1 = (c1 >= 'A' && c1 <= 'Z') ? (c1 | 0x20) : c1;
- } while (c1 != c2);
- } while (ngx_strncasecmp(s1, (u_char *) s2, n) != 0);
- return --s1;
- }
- u_char *
- ngx_strlcasestrn(u_char *s1, u_char *last, u_char *s2, size_t n)
- {
- ngx_uint_t c1, c2;
- c2 = (ngx_uint_t) *s2++;
- c2 = (c2 >= 'A' && c2 <= 'Z') ? (c2 | 0x20) : c2;
- last -= n;
- do {
- do {
- if (s1 >= last) {
- return NULL;
- }
- c1 = (ngx_uint_t) *s1++;
- c1 = (c1 >= 'A' && c1 <= 'Z') ? (c1 | 0x20) : c1;
- } while (c1 != c2);
- } while (ngx_strncasecmp(s1, s2, n) != 0);
- return --s1;
- }
- ngx_int_t
- ngx_rstrncmp(u_char *s1, u_char *s2, size_t n)
- {
- if (n == 0) {
- return 0;
- }
- n--;
- for ( ;; ) {
- if (s1[n] != s2[n]) {
- return s1[n] - s2[n];
- }
- if (n == 0) {
- return 0;
- }
- n--;
- }
- }
- ngx_int_t
- ngx_rstrncasecmp(u_char *s1, u_char *s2, size_t n)
- {
- u_char c1, c2;
- if (n == 0) {
- return 0;
- }
- n--;
- for ( ;; ) {
- c1 = s1[n];
- if (c1 >= 'a' && c1 <= 'z') {
- c1 -= 'a' - 'A';
- }
- c2 = s2[n];
- if (c2 >= 'a' && c2 <= 'z') {
- c2 -= 'a' - 'A';
- }
- if (c1 != c2) {
- return c1 - c2;
- }
- if (n == 0) {
- return 0;
- }
- n--;
- }
- }
- ngx_int_t
- ngx_memn2cmp(u_char *s1, u_char *s2, size_t n1, size_t n2)
- {
- size_t n;
- ngx_int_t m, z;
- if (n1 <= n2) {
- n = n1;
- z = -1;
- } else {
- n = n2;
- z = 1;
- }
- m = ngx_memcmp(s1, s2, n);
- if (m || n1 == n2) {
- return m;
- }
- return z;
- }
- ngx_int_t
- ngx_dns_strcmp(u_char *s1, u_char *s2)
- {
- ngx_uint_t c1, c2;
- for ( ;; ) {
- c1 = (ngx_uint_t) *s1++;
- c2 = (ngx_uint_t) *s2++;
- c1 = (c1 >= 'A' && c1 <= 'Z') ? (c1 | 0x20) : c1;
- c2 = (c2 >= 'A' && c2 <= 'Z') ? (c2 | 0x20) : c2;
- if (c1 == c2) {
- if (c1) {
- continue;
- }
- return 0;
- }
-
- c1 = (c1 == '.') ? ' ' : c1;
- c2 = (c2 == '.') ? ' ' : c2;
- return c1 - c2;
- }
- }
- ngx_int_t
- ngx_filename_cmp(u_char *s1, u_char *s2, size_t n)
- {
- ngx_uint_t c1, c2;
- while (n) {
- c1 = (ngx_uint_t) *s1++;
- c2 = (ngx_uint_t) *s2++;
- #if (NGX_HAVE_CASELESS_FILESYSTEM)
- c1 = tolower(c1);
- c2 = tolower(c2);
- #endif
- if (c1 == c2) {
- if (c1) {
- n--;
- continue;
- }
- return 0;
- }
-
- if (c1 == 0 || c2 == 0) {
- return c1 - c2;
- }
- c1 = (c1 == '/') ? 0 : c1;
- c2 = (c2 == '/') ? 0 : c2;
- return c1 - c2;
- }
- return 0;
- }
- ngx_int_t
- ngx_atoi(u_char *line, size_t n)
- {
- ngx_int_t value;
- if (n == 0) {
- return NGX_ERROR;
- }
- for (value = 0; n--; line++) {
- if (*line < '0' || *line > '9') {
- return NGX_ERROR;
- }
- value = value * 10 + (*line - '0');
- }
- if (value < 0) {
- return NGX_ERROR;
- } else {
- return value;
- }
- }
- ngx_int_t
- ngx_atofp(u_char *line, size_t n, size_t point)
- {
- ngx_int_t value;
- ngx_uint_t dot;
- if (n == 0) {
- return NGX_ERROR;
- }
- dot = 0;
- for (value = 0; n--; line++) {
- if (point == 0) {
- return NGX_ERROR;
- }
- if (*line == '.') {
- if (dot) {
- return NGX_ERROR;
- }
- dot = 1;
- continue;
- }
- if (*line < '0' || *line > '9') {
- return NGX_ERROR;
- }
- value = value * 10 + (*line - '0');
- point -= dot;
- }
- while (point--) {
- value = value * 10;
- }
- if (value < 0) {
- return NGX_ERROR;
- } else {
- return value;
- }
- }
- ssize_t
- ngx_atosz(u_char *line, size_t n)
- {
- ssize_t value;
- if (n == 0) {
- return NGX_ERROR;
- }
- for (value = 0; n--; line++) {
- if (*line < '0' || *line > '9') {
- return NGX_ERROR;
- }
- value = value * 10 + (*line - '0');
- }
- if (value < 0) {
- return NGX_ERROR;
- } else {
- return value;
- }
- }
- off_t
- ngx_atoof(u_char *line, size_t n)
- {
- off_t value;
- if (n == 0) {
- return NGX_ERROR;
- }
- for (value = 0; n--; line++) {
- if (*line < '0' || *line > '9') {
- return NGX_ERROR;
- }
- value = value * 10 + (*line - '0');
- }
- if (value < 0) {
- return NGX_ERROR;
- } else {
- return value;
- }
- }
- time_t
- ngx_atotm(u_char *line, size_t n)
- {
- time_t value;
- if (n == 0) {
- return NGX_ERROR;
- }
- for (value = 0; n--; line++) {
- if (*line < '0' || *line > '9') {
- return NGX_ERROR;
- }
- value = value * 10 + (*line - '0');
- }
- if (value < 0) {
- return NGX_ERROR;
- } else {
- return value;
- }
- }
- ngx_int_t
- ngx_hextoi(u_char *line, size_t n)
- {
- u_char c, ch;
- ngx_int_t value;
- if (n == 0) {
- return NGX_ERROR;
- }
- for (value = 0; n--; line++) {
- ch = *line;
- if (ch >= '0' && ch <= '9') {
- value = value * 16 + (ch - '0');
- continue;
- }
- c = (u_char) (ch | 0x20);
- if (c >= 'a' && c <= 'f') {
- value = value * 16 + (c - 'a' + 10);
- continue;
- }
- return NGX_ERROR;
- }
- if (value < 0) {
- return NGX_ERROR;
- } else {
- return value;
- }
- }
- u_char *
- ngx_hex_dump(u_char *dst, u_char *src, size_t len)
- {
- static u_char hex[] = "0123456789abcdef";
- while (len--) {
- *dst++ = hex[*src >> 4];
- *dst++ = hex[*src++ & 0xf];
- }
- return dst;
- }
- void
- ngx_encode_base64(ngx_str_t *dst, ngx_str_t *src)
- {
- static u_char basis64[] =
- "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
- ngx_encode_base64_internal(dst, src, basis64, 1);
- }
- void
- ngx_encode_base64url(ngx_str_t *dst, ngx_str_t *src)
- {
- static u_char basis64[] =
- "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_";
- ngx_encode_base64_internal(dst, src, basis64, 0);
- }
- static void
- ngx_encode_base64_internal(ngx_str_t *dst, ngx_str_t *src, const u_char *basis,
- ngx_uint_t padding)
- {
- u_char *d, *s;
- size_t len;
- len = src->len;
- s = src->data;
- d = dst->data;
- while (len > 2) {
- *d++ = basis[(s[0] >> 2) & 0x3f];
- *d++ = basis[((s[0] & 3) << 4) | (s[1] >> 4)];
- *d++ = basis[((s[1] & 0x0f) << 2) | (s[2] >> 6)];
- *d++ = basis[s[2] & 0x3f];
- s += 3;
- len -= 3;
- }
- if (len) {
- *d++ = basis[(s[0] >> 2) & 0x3f];
- if (len == 1) {
- *d++ = basis[(s[0] & 3) << 4];
- if (padding) {
- *d++ = '=';
- }
- } else {
- *d++ = basis[((s[0] & 3) << 4) | (s[1] >> 4)];
- *d++ = basis[(s[1] & 0x0f) << 2];
- }
- if (padding) {
- *d++ = '=';
- }
- }
- dst->len = d - dst->data;
- }
- ngx_int_t
- ngx_decode_base64(ngx_str_t *dst, ngx_str_t *src)
- {
- 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
- };
- return ngx_decode_base64_internal(dst, src, basis64);
- }
- ngx_int_t
- ngx_decode_base64url(ngx_str_t *dst, ngx_str_t *src)
- {
- 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, 77, 77, 62, 77, 77,
- 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, 63,
- 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
- };
- return ngx_decode_base64_internal(dst, src, basis64);
- }
- static ngx_int_t
- ngx_decode_base64_internal(ngx_str_t *dst, ngx_str_t *src, const u_char *basis)
- {
- size_t len;
- u_char *d, *s;
- for (len = 0; len < src->len; len++) {
- if (src->data[len] == '=') {
- break;
- }
- if (basis[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) (basis[s[0]] << 2 | basis[s[1]] >> 4);
- *d++ = (u_char) (basis[s[1]] << 4 | basis[s[2]] >> 2);
- *d++ = (u_char) (basis[s[2]] << 6 | basis[s[3]]);
- s += 4;
- len -= 4;
- }
- if (len > 1) {
- *d++ = (u_char) (basis[s[0]] << 2 | basis[s[1]] >> 4);
- }
- if (len > 2) {
- *d++ = (u_char) (basis[s[1]] << 4 | basis[s[2]] >> 2);
- }
- dst->len = d - dst->data;
- return NGX_OK;
- }
- uint32_t
- ngx_utf8_decode(u_char **p, size_t n)
- {
- size_t len;
- uint32_t u, i, valid;
- u = **p;
- if (u >= 0xf0) {
- u &= 0x07;
- valid = 0xffff;
- len = 3;
- } else if (u >= 0xe0) {
- u &= 0x0f;
- valid = 0x7ff;
- len = 2;
- } else if (u >= 0xc2) {
- u &= 0x1f;
- valid = 0x7f;
- len = 1;
- } else {
- (*p)++;
- return 0xffffffff;
- }
- if (n - 1 < len) {
- return 0xfffffffe;
- }
- (*p)++;
- while (len) {
- i = *(*p)++;
- if (i < 0x80) {
- return 0xffffffff;
- }
- u = (u << 6) | (i & 0x3f);
- len--;
- }
- if (u > valid) {
- return u;
- }
- return 0xffffffff;
- }
- size_t
- ngx_utf8_length(u_char *p, size_t n)
- {
- u_char c, *last;
- size_t len;
- last = p + n;
- for (len = 0; p < last; len++) {
- c = *p;
- if (c < 0x80) {
- p++;
- continue;
- }
- if (ngx_utf8_decode(&p, n) > 0x10ffff) {
-
- return n;
- }
- }
- return len;
- }
- u_char *
- ngx_utf8_cpystrn(u_char *dst, u_char *src, size_t n, size_t len)
- {
- u_char c, *next;
- if (n == 0) {
- return dst;
- }
- while (--n) {
- c = *src;
- *dst = c;
- if (c < 0x80) {
- if (c != '\0') {
- dst++;
- src++;
- len--;
- continue;
- }
- return dst;
- }
- next = src;
- if (ngx_utf8_decode(&next, len) > 0x10ffff) {
-
- break;
- }
- while (src < next) {
- *dst++ = *src++;
- len--;
- }
- }
- *dst = '\0';
- return dst;
- }
- uintptr_t
- ngx_escape_uri(u_char *dst, u_char *src, size_t size, ngx_uint_t type)
- {
- ngx_uint_t n;
- uint32_t *escape;
- static u_char hex[] = "0123456789ABCDEF";
-
- static uint32_t uri[] = {
- 0xffffffff,
-
- 0x80000029,
-
- 0x00000000,
-
- 0x80000000,
- 0xffffffff,
- 0xffffffff,
- 0xffffffff,
- 0xffffffff
- };
-
- static uint32_t args[] = {
- 0xffffffff,
-
- 0x88000869,
-
- 0x00000000,
-
- 0x80000000,
- 0xffffffff,
- 0xffffffff,
- 0xffffffff,
- 0xffffffff
- };
-
- static uint32_t uri_component[] = {
- 0xffffffff,
-
- 0xfc009fff,
-
- 0x78000001,
-
- 0xb8000001,
- 0xffffffff,
- 0xffffffff,
- 0xffffffff,
- 0xffffffff
- };
-
- static uint32_t html[] = {
- 0xffffffff,
-
- 0x000000ad,
-
- 0x00000000,
-
- 0x80000000,
- 0xffffffff,
- 0xffffffff,
- 0xffffffff,
- 0xffffffff
- };
-
- static uint32_t refresh[] = {
- 0xffffffff,
-
- 0x00000085,
-
- 0x00000000,
-
- 0x80000000,
- 0xffffffff,
- 0xffffffff,
- 0xffffffff,
- 0xffffffff
- };
-
- static uint32_t memcached[] = {
- 0xffffffff,
-
- 0x00000021,
-
- 0x00000000,
-
- 0x00000000,
- 0x00000000,
- 0x00000000,
- 0x00000000,
- 0x00000000,
- };
-
- static uint32_t *map[] =
- { uri, args, uri_component, html, refresh, memcached, memcached };
- escape = map[type];
- if (dst == NULL) {
-
- n = 0;
- while (size) {
- if (escape[*src >> 5] & (1 << (*src & 0x1f))) {
- n++;
- }
- src++;
- size--;
- }
- return (uintptr_t) n;
- }
- while (size) {
- if (escape[*src >> 5] & (1 << (*src & 0x1f))) {
- *dst++ = '%';
- *dst++ = hex[*src >> 4];
- *dst++ = hex[*src & 0xf];
- src++;
- } else {
- *dst++ = *src++;
- }
- size--;
- }
- return (uintptr_t) dst;
- }
- void
- ngx_unescape_uri(u_char **dst, u_char **src, size_t size, ngx_uint_t type)
- {
- u_char *d, *s, ch, c, decoded;
- enum {
- sw_usual = 0,
- sw_quoted,
- sw_quoted_second
- } state;
- d = *dst;
- s = *src;
- state = 0;
- decoded = 0;
- while (size--) {
- ch = *s++;
- switch (state) {
- case sw_usual:
- if (ch == '?'
- && (type & (NGX_UNESCAPE_URI|NGX_UNESCAPE_REDIRECT)))
- {
- *d++ = ch;
- goto done;
- }
- if (ch == '%') {
- state = sw_quoted;
- break;
- }
- *d++ = ch;
- break;
- case sw_quoted:
- if (ch >= '0' && ch <= '9') {
- decoded = (u_char) (ch - '0');
- state = sw_quoted_second;
- break;
- }
- c = (u_char) (ch | 0x20);
- if (c >= 'a' && c <= 'f') {
- decoded = (u_char) (c - 'a' + 10);
- state = sw_quoted_second;
- break;
- }
-
- state = sw_usual;
- *d++ = ch;
- break;
- case sw_quoted_second:
- state = sw_usual;
- if (ch >= '0' && ch <= '9') {
- ch = (u_char) ((decoded << 4) + ch - '0');
- if (type & NGX_UNESCAPE_REDIRECT) {
- if (ch > '%' && ch < 0x7f) {
- *d++ = ch;
- break;
- }
- *d++ = '%'; *d++ = *(s - 2); *d++ = *(s - 1);
- break;
- }
- *d++ = ch;
- break;
- }
- c = (u_char) (ch | 0x20);
- if (c >= 'a' && c <= 'f') {
- ch = (u_char) ((decoded << 4) + c - 'a' + 10);
- if (type & NGX_UNESCAPE_URI) {
- if (ch == '?') {
- *d++ = ch;
- goto done;
- }
- *d++ = ch;
- break;
- }
- if (type & NGX_UNESCAPE_REDIRECT) {
- if (ch == '?') {
- *d++ = ch;
- goto done;
- }
- if (ch > '%' && ch < 0x7f) {
- *d++ = ch;
- break;
- }
- *d++ = '%'; *d++ = *(s - 2); *d++ = *(s - 1);
- break;
- }
- *d++ = ch;
- break;
- }
-
- break;
- }
- }
- done:
- *dst = d;
- *src = s;
- }
- uintptr_t
- ngx_escape_html(u_char *dst, u_char *src, size_t size)
- {
- u_char ch;
- ngx_uint_t len;
- if (dst == NULL) {
- len = 0;
- while (size) {
- switch (*src++) {
- case '<':
- len += sizeof("<") - 2;
- break;
- case '>':
- len += sizeof(">") - 2;
- break;
- case '&':
- len += sizeof("&") - 2;
- break;
- case '"':
- len += sizeof(""") - 2;
- break;
- default:
- break;
- }
- size--;
- }
- return (uintptr_t) len;
- }
- while (size) {
- ch = *src++;
- switch (ch) {
- case '<':
- *dst++ = '&'; *dst++ = 'l'; *dst++ = 't'; *dst++ = ';';
- break;
- case '>':
- *dst++ = '&'; *dst++ = 'g'; *dst++ = 't'; *dst++ = ';';
- break;
- case '&':
- *dst++ = '&'; *dst++ = 'a'; *dst++ = 'm'; *dst++ = 'p';
- *dst++ = ';';
- break;
- case '"':
- *dst++ = '&'; *dst++ = 'q'; *dst++ = 'u'; *dst++ = 'o';
- *dst++ = 't'; *dst++ = ';';
- break;
- default:
- *dst++ = ch;
- break;
- }
- size--;
- }
- return (uintptr_t) dst;
- }
- uintptr_t
- ngx_escape_json(u_char *dst, u_char *src, size_t size)
- {
- u_char ch;
- ngx_uint_t len;
- if (dst == NULL) {
- len = 0;
- while (size) {
- ch = *src++;
- if (ch == '\\' || ch == '"') {
- len++;
- } else if (ch <= 0x1f) {
- len += sizeof("\\u001F") - 2;
- }
- size--;
- }
- return (uintptr_t) len;
- }
- while (size) {
- ch = *src++;
- if (ch > 0x1f) {
- if (ch == '\\' || ch == '"') {
- *dst++ = '\\';
- }
- *dst++ = ch;
- } else {
- *dst++ = '\\'; *dst++ = 'u'; *dst++ = '0'; *dst++ = '0';
- *dst++ = '0' + (ch >> 4);
- ch &= 0xf;
- *dst++ = (ch < 10) ? ('0' + ch) : ('A' + ch - 10);
- }
- size--;
- }
- return (uintptr_t) dst;
- }
- void
- ngx_str_rbtree_insert_value(ngx_rbtree_node_t *temp,
- ngx_rbtree_node_t *node, ngx_rbtree_node_t *sentinel)
- {
- ngx_str_node_t *n, *t;
- ngx_rbtree_node_t **p;
- for ( ;; ) {
- n = (ngx_str_node_t *) node;
- t = (ngx_str_node_t *) temp;
- if (node->key != temp->key) {
- p = (node->key < temp->key) ? &temp->left : &temp->right;
- } else if (n->str.len != t->str.len) {
- p = (n->str.len < t->str.len) ? &temp->left : &temp->right;
- } else {
- p = (ngx_memcmp(n->str.data, t->str.data, n->str.len) < 0)
- ? &temp->left : &temp->right;
- }
- if (*p == sentinel) {
- break;
- }
- temp = *p;
- }
- *p = node;
- node->parent = temp;
- node->left = sentinel;
- node->right = sentinel;
- ngx_rbt_red(node);
- }
- ngx_str_node_t *
- ngx_str_rbtree_lookup(ngx_rbtree_t *rbtree, ngx_str_t *val, uint32_t hash)
- {
- ngx_int_t rc;
- ngx_str_node_t *n;
- ngx_rbtree_node_t *node, *sentinel;
- node = rbtree->root;
- sentinel = rbtree->sentinel;
- while (node != sentinel) {
- n = (ngx_str_node_t *) node;
- if (hash != node->key) {
- node = (hash < node->key) ? node->left : node->right;
- continue;
- }
- if (val->len != n->str.len) {
- node = (val->len < n->str.len) ? node->left : node->right;
- continue;
- }
- rc = ngx_memcmp(val->data, n->str.data, val->len);
- if (rc < 0) {
- node = node->left;
- continue;
- }
- if (rc > 0) {
- node = node->right;
- continue;
- }
- return n;
- }
- return NULL;
- }
- void
- ngx_sort(void *base, size_t n, size_t size,
- ngx_int_t (*cmp)(const void *, const void *))
- {
- u_char *p1, *p2, *p;
- p = ngx_alloc(size, ngx_cycle->log);
- if (p == NULL) {
- return;
- }
- for (p1 = (u_char *) base + size;
- p1 < (u_char *) base + n * size;
- p1 += size)
- {
- ngx_memcpy(p, p1, size);
- for (p2 = p1;
- p2 > (u_char *) base && cmp(p2 - size, p) > 0;
- p2 -= size)
- {
- ngx_memcpy(p2, p2 - size, size);
- }
- ngx_memcpy(p2, p, size);
- }
- ngx_free(p);
- }
- #if (NGX_MEMCPY_LIMIT)
- void *
- ngx_memcpy(void *dst, const void *src, size_t n)
- {
- if (n > NGX_MEMCPY_LIMIT) {
- ngx_log_error(NGX_LOG_ALERT, ngx_cycle->log, 0, "memcpy %uz bytes", n);
- ngx_debug_point();
- }
- return memcpy(dst, src, n);
- }
- #endif
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