253 lines
4.4 KiB
C
253 lines
4.4 KiB
C
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#include <ngx_config.h>
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#include <ngx_core.h>
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u_char *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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ngx_int_t 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 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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ngx_int_t 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 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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ngx_int_t ngx_encode_base64(ngx_pool_t *pool, ngx_str_t *src, ngx_str_t *dst)
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{
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u_char *d, *s;
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ngx_uint_t i;
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static u_char basis64[] =
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"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
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if (!(d = ngx_palloc(pool, ((src->len + 2) / 3) * 4 + 1))) {
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return NGX_ERROR;
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}
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dst->data = d;
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s = src->data;
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for (i = 0; i < src->len - 2; i += 3) {
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*d++ = basis64[(s[i] >> 2) & 0x3f];
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*d++ = basis64[((s[i] & 3) << 4) | (s[i + 1] >> 4)];
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*d++ = basis64[((s[i + 1] & 0x0f) << 2) | (s[i + 2] >> 6)];
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*d++ = basis64[s[i + 2] & 0x3f];
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}
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if (i < src->len) {
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*d++ = basis64[(s[i] >> 2) & 0x3f];
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if (i == src->len - 1) {
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*d++ = basis64[(s[i] & 3) << 4];
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*d++ = '=';
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} else {
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*d++ = basis64[((s[i] & 3) << 4) | (s[i + 1] >> 4)];
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*d++ = basis64[(s[i + 1] & 0x0f) << 2];
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}
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*d++ = '=';
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}
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dst->len = d - dst->data;
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*d++ = '\0';
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return NGX_OK;
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}
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ngx_int_t ngx_decode_base64(ngx_pool_t *pool, ngx_str_t *src, ngx_str_t *dst)
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{
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u_char *d, *s, c;
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if (!(d = ngx_palloc(pool, ((src->len + 3) / 4) * 3))) {
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return NGX_ABORT;
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}
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dst->data = d;
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s = src->data;
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if (*s == '+') {
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c = 62;
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} else if (*s == '/') {
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c = 63;
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} else if (*s >= '0' && *s <= '9') {
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c = *s - '0' + 52;
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} else if (*s >= 'A' && *s <= 'Z') {
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c = *s - 'A';
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} else if (*s >= 'a' && *s <= 'z') {
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c = *s - 'a' + 26;
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} else {
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return NGX_ERROR;
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}
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return NGX_OK;
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}
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#if 0
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char *ngx_psprintf(ngx_pool_t *p, const char *fmt, ...)
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{
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va_list args;
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va_start(args, fmt);
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while (*fmt) {
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switch(*fmt++) {
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case '%':
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switch(*fmt++) {
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case 's':
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s = va_arg(args, char *);
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n += ngx_strlen(s);
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break;
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default:
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n++;
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}
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default:
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n++;
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}
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}
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str = ngx_palloc(p, n);
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va_start(args, fmt);
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for (i = 0; i < n; i++) {
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switch(*fmt++) {
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case '%':
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switch(*fmt++) {
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case 's':
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s = va_arg(args, char *);
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while (str[i++] = s);
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break;
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default:
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n++;
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}
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default:
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str[i] = *fmt;
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}
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}
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len += ngx_vsnprintf(errstr + len, sizeof(errstr) - len - 1, fmt, args);
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va_end(args);
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}
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#endif
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