Mercurial > hg > nginx-quic
view src/core/ngx_inet.c @ 478:e6576f690993
release-0.1.13 tag
author | Igor Sysoev <igor@sysoev.ru> |
---|---|
date | Tue, 21 Dec 2004 12:30:30 +0000 |
parents | bbd6b0b4a2b1 |
children | c52408583801 |
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/* * Copyright (C) Igor Sysoev */ #include <ngx_config.h> #include <ngx_core.h> /* * ngx_sock_ntop() and ngx_inet_ntop() may be implemented as * "ngx_sprintf(text, "%ud.%ud.%ud.%ud", p[0], p[1], p[2], p[3])", * however, they were implemented long before the ngx_sprintf() appeared * and they are faster by 1.5-2.5 times, so it is worth to keep them. * * By the way, the implementation using ngx_sprintf() is faster by 2.5-3 times * than using FreeBSD libc's snrpintf(). */ static ngx_inline size_t ngx_sprint_uchar(u_char *text, u_char c, size_t len) { size_t n; ngx_uint_t c1, c2; n = 0; if (len == n) { return n; } c1 = c / 100; if (c1) { *text++ = (u_char) (c1 + '0'); n++; if (len == n) { return n; } } c2 = (c % 100) / 10; if (c1 || c2) { *text++ = (u_char) (c2 + '0'); n++; if (len == n) { return n; } } c2 = c % 10; *text++ = (u_char) (c2 + '0'); n++; return n; } /* AF_INET only */ size_t ngx_sock_ntop(int family, struct sockaddr *addr, u_char *text, size_t len) { u_char *p; size_t n; ngx_uint_t i; struct sockaddr_in *addr_in; if (len == 0) { return 0; } if (family != AF_INET) { return 0; } addr_in = (struct sockaddr_in *) addr; p = (u_char *) &addr_in->sin_addr; if (len > INET_ADDRSTRLEN) { len = INET_ADDRSTRLEN; } n = ngx_sprint_uchar(text, p[0], len); i = 1; do { if (len == n) { text[n - 1] = '\0'; return n; } text[n++] = '.'; if (len == n) { text[n - 1] = '\0'; return n; } n += ngx_sprint_uchar(&text[n], p[i++], len - n); } while (i < 4); if (len == n) { text[n] = '\0'; return n; } text[n] = '\0'; return n; } size_t ngx_inet_ntop(int family, void *addr, u_char *text, size_t len) { u_char *p; size_t n; ngx_uint_t i; if (len == 0) { return 0; } if (family != AF_INET) { return 0; } p = (u_char *) addr; if (len > INET_ADDRSTRLEN) { len = INET_ADDRSTRLEN; } n = ngx_sprint_uchar(text, p[0], len); i = 1; do { if (len == n) { text[n - 1] = '\0'; return n; } text[n++] = '.'; if (len == n) { text[n - 1] = '\0'; return n; } n += ngx_sprint_uchar(&text[n], p[i++], len - n); } while (i < 4); if (len == n) { text[n] = '\0'; return n; } text[n] = '\0'; return n; } /* AF_INET only */ ngx_int_t ngx_ptocidr(ngx_str_t *text, void *cidr) { ngx_int_t m; ngx_uint_t i; ngx_inet_cidr_t *in_cidr; in_cidr = cidr; for (i = 0; i < text->len; i++) { if (text->data[i] == '/') { break; } } if (i == text->len) { return NGX_ERROR; } text->data[i] = '\0'; in_cidr->addr = inet_addr((char *) text->data); text->data[i] = '/'; if (in_cidr->addr == INADDR_NONE) { return NGX_ERROR; } m = ngx_atoi(&text->data[i + 1], text->len - (i + 1)); if (m == NGX_ERROR) { return NGX_ERROR; } if (m == 0) { /* the x86 compilers use the shl instruction that shifts by modulo 32 */ in_cidr->mask = 0; return NGX_OK; } in_cidr->mask = htonl((ngx_uint_t) (0 - (1 << (32 - m)))); return NGX_OK; } #if 0 ngx_int_t ngx_inet_addr_port(ngx_conf_t *cf, ngx_command_t *cmd, ngx_str_t *addr_port) { u_char *host; ngx_int_t port; ngx_uint_t p; struct hostent *h; for (p = 0; p < addr_port->len; p++) { if (addr_port->data[p] == ':') { break; } } in_addr->host.len = p; if (!(in_addr->host.data = ngx_palloc(pool, p + 1))) { return NGX_ERROR; } ngx_cpystrn(in_addr->host.data, addr_port->data, p + 1); if (p == addr_port->len) { p = 0; } port = ngx_atoi(&addr[p], args[1].len - p); if (port == NGX_ERROR && p == 0) { /* default port */ iap->port = 0; } else if ((port == NGX_ERROR && p != 0) /* "listen host:NONNUMBER" */ || (port < 1 || port > 65536)) { /* "listen 99999" */ ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "invalid port \"%s\" in \"%s\" directive, " "it must be a number between 1 and 65535", &addr[p], cmd->name.data); return NGX_CONF_ERROR; } else if (p == 0) { ls->addr = INADDR_ANY; ls->port = (in_port_t) port; return NGX_CONF_OK; } return NGX_OK; } #endif