Mercurial > hg > nginx-vendor-current
diff src/core/ngx_string.c @ 0:f0b350454894 NGINX_0_1_0
nginx 0.1.0
*) The first public version.
author | Igor Sysoev <http://sysoev.ru> |
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date | Mon, 04 Oct 2004 00:00:00 +0400 |
parents | |
children | cc9f381affaa |
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new file mode 100644 --- /dev/null +++ b/src/core/ngx_string.c @@ -0,0 +1,284 @@ + +/* + * Copyright (C) Igor Sysoev + */ + + +#include <ngx_config.h> +#include <ngx_core.h> + + +u_char *ngx_cpystrn(u_char *dst, u_char *src, size_t n) +{ + if (n == 0) { + return dst; + } + + for (/* void */; --n; dst++, src++) { + *dst = *src; + + if (*dst == '\0') { + return dst; + } + } + + *dst = '\0'; + + return dst; +} + + +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_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_hextoi(u_char *line, size_t n) +{ + u_char 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; + } + + if (ch >= 'A' && ch <= 'F') { + value = value * 16 + (ch - 'A' + 10); + continue; + } + + if (ch >= 'a' && ch <= 'f') { + value = value * 16 + (ch - 'a' + 10); + continue; + } + + return NGX_ERROR; + } + + if (value < 0) { + return NGX_ERROR; + + } else { + return value; + } +} + + +void ngx_md5_text(u_char *text, u_char *md5) +{ + int i; + static u_char hex[] = "0123456789abcdef"; + + for (i = 0; i < 16; i++) { + *text++ = hex[md5[i] >> 4]; + *text++ = hex[md5[i] & 0xf]; + } + + *text = '\0'; +} + + +void ngx_encode_base64(ngx_str_t *src, ngx_str_t *dst) +{ + 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 *src, ngx_str_t *dst) +{ + 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; +} + + +#if 0 +char *ngx_psprintf(ngx_pool_t *p, const char *fmt, ...) +{ + va_list args; + + va_start(args, fmt); + + while (*fmt) { + switch(*fmt++) { + case '%': + switch(*fmt++) { + case 's': + s = va_arg(args, char *); + n += ngx_strlen(s); + break; + + default: + n++; + } + default: + n++; + } + } + + str = ngx_palloc(p, n); + + va_start(args, fmt); + + for (i = 0; i < n; i++) { + switch(*fmt++) { + case '%': + switch(*fmt++) { + case 's': + s = va_arg(args, char *); + while (str[i++] = s); + break; + + default: + n++; + } + default: + str[i] = *fmt; + } + } + + len += ngx_vsnprintf(errstr + len, sizeof(errstr) - len - 1, fmt, args); + + va_end(args); + +} +#endif