Mercurial > hg > nginx-quic
view src/core/ngx_inet.c @ 2377:87b8c44906b5
*) refactor subrequest handling, now they run as separate posted requests
*) now $upstream_addr, $upstream_status, $upstream_response_time can be used
with log_subrequest
author | Igor Sysoev <igor@sysoev.ru> |
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date | Mon, 08 Dec 2008 14:23:20 +0000 |
parents | 148c2e840c2b |
children | 2e91aecb9e57 |
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/* * Copyright (C) Igor Sysoev */ #include <ngx_config.h> #include <ngx_core.h> static ngx_int_t ngx_parse_unix_domain_url(ngx_pool_t *pool, ngx_url_t *u); static ngx_int_t ngx_parse_inet_url(ngx_pool_t *pool, ngx_url_t *u); /* AF_INET only */ in_addr_t ngx_inet_addr(u_char *text, size_t len) { u_char *p, c; in_addr_t addr; ngx_uint_t octet, n; addr = 0; octet = 0; n = 0; for (p = text; p < text + len; p++) { c = *p; if (c >= '0' && c <= '9') { octet = octet * 10 + (c - '0'); continue; } if (c == '.' && octet < 256) { addr = (addr << 8) + octet; octet = 0; n++; continue; } return INADDR_NONE; } if (n != 3) { return INADDR_NONE; } if (octet < 256) { addr = (addr << 8) + octet; return htonl(addr); } return INADDR_NONE; } /* AF_INET only */ size_t ngx_sock_ntop(struct sockaddr *sa, u_char *text, size_t len) { u_char *p; struct sockaddr_in *sin; if (sa->sa_family == AF_INET) { sin = (struct sockaddr_in *) sa; p = (u_char *) &sin->sin_addr; return ngx_snprintf(text, len, "%ud.%ud.%ud.%ud", p[0], p[1], p[2], p[3]) - text; } return 0; } size_t ngx_inet_ntop(int family, void *addr, u_char *text, size_t len) { u_char *p; if (family == AF_INET) { p = (u_char *) addr; return ngx_snprintf(text, len, "%ud.%ud.%ud.%ud", p[0], p[1], p[2], p[3]) - text; } return 0; } /* AF_INET only */ ngx_int_t ngx_ptocidr(ngx_str_t *text, void *cidr) { u_char *addr, *mask, *last; ngx_int_t shift; ngx_inet_cidr_t *in_cidr; in_cidr = cidr; addr = text->data; last = addr + text->len; mask = ngx_strlchr(addr, last, '/'); in_cidr->addr = ngx_inet_addr(addr, (mask ? mask : last) - addr); if (in_cidr->addr == INADDR_NONE) { return NGX_ERROR; } if (mask == NULL) { in_cidr->mask = 0xffffffff; return NGX_OK; } mask++; shift = ngx_atoi(mask, last - mask); if (shift == NGX_ERROR) { return NGX_ERROR; } if (shift == 0) { /* the x86 compilers use the shl instruction that shifts by modulo 32 */ in_cidr->mask = 0; if (in_cidr->addr == 0) { return NGX_OK; } return NGX_DONE; } in_cidr->mask = htonl((ngx_uint_t) (0 - (1 << (32 - shift)))); if (in_cidr->addr == (in_cidr->addr & in_cidr->mask)) { return NGX_OK; } in_cidr->addr &= in_cidr->mask; return NGX_DONE; } ngx_int_t ngx_parse_url(ngx_pool_t *pool, ngx_url_t *u) { u_char *p; p = u->url.data; if (ngx_strncasecmp(p, (u_char *) "unix:", 5) == 0) { return ngx_parse_unix_domain_url(pool, u); } if ((p[0] == ':' || p[0] == '/') && !u->listen) { u->err = "invalid host"; return NGX_ERROR; } return ngx_parse_inet_url(pool, u); } static ngx_int_t ngx_parse_unix_domain_url(ngx_pool_t *pool, ngx_url_t *u) { #if (NGX_HAVE_UNIX_DOMAIN) u_char *path, *uri, *last; size_t len; struct sockaddr_un *saun; len = u->url.len; path = u->url.data; path += 5; len -= 5; if (u->uri_part) { last = path + len; uri = ngx_strlchr(path, last, ':'); if (uri) { len = uri - path; uri++; u->uri.len = last - uri; u->uri.data = uri; } } if (len == 0) { u->err = "no path in the unix domain socket"; return NGX_ERROR; } u->host.len = len++; u->host.data = path; u->family = AF_UNIX; if (len > sizeof(saun->sun_path)) { u->err = "too long path in the unix domain socket"; return NGX_ERROR; } u->addrs = ngx_pcalloc(pool, sizeof(ngx_peer_addr_t)); if (u->addrs == NULL) { return NGX_ERROR; } saun = ngx_pcalloc(pool, sizeof(struct sockaddr_un)); if (saun == NULL) { return NGX_ERROR; } u->naddrs = 1; saun->sun_family = AF_UNIX; (void) ngx_cpystrn((u_char *) saun->sun_path, path, len); u->addrs[0].sockaddr = (struct sockaddr *) saun; u->addrs[0].socklen = sizeof(struct sockaddr_un); u->addrs[0].name.len = len + 4; u->addrs[0].name.data = u->url.data; return NGX_OK; #else u->err = "the unix domain sockets are not supported on this platform"; return NGX_ERROR; #endif } static ngx_int_t ngx_parse_inet_url(ngx_pool_t *pool, ngx_url_t *u) { u_char *p, *host, *port, *last, *uri, *args; size_t len; ngx_int_t n; struct hostent *h; u->family = AF_INET; host = u->url.data; last = host + u->url.len; port = ngx_strlchr(host, last, ':'); uri = ngx_strlchr(host, last, '/'); args = ngx_strlchr(host, last, '?'); if (args) { if (uri == NULL) { uri = args; } else if (args < uri) { uri = args; } } if (uri) { if (u->listen || !u->uri_part) { u->err = "invalid host"; return NGX_ERROR; } u->uri.len = last - uri; u->uri.data = uri; last = uri; if (uri < port) { port = NULL; } } if (port) { port++; len = last - port; if (len == 0) { u->err = "invalid port"; return NGX_ERROR; } n = ngx_atoi(port, len); if (n < 1 || n > 65536) { u->err = "invalid port"; return NGX_ERROR; } u->port = (in_port_t) n; u->port_text.len = len; u->port_text.data = port; last = port - 1; } else { if (uri == NULL) { if (u->listen) { /* test value as port only */ n = ngx_atoi(host, last - host); if (n != NGX_ERROR) { if (n < 1 || n > 65536) { u->err = "invalid port"; return NGX_ERROR; } u->port = (in_port_t) n; u->port_text.len = last - host; u->port_text.data = host; return NGX_OK; } } } u->no_port = 1; } len = last - host; if (len == 0) { u->err = "no host"; return NGX_ERROR; } if (len == 1 && *host == '*') { len = 0; } u->host.len = len; u->host.data = host; if (u->no_resolve) { return NGX_OK; } if (len++) { p = ngx_alloc(len, pool->log); if (p == NULL) { return NGX_ERROR; } (void) ngx_cpystrn(p, host, len); u->addr.in_addr = inet_addr((const char *) p); if (u->addr.in_addr == INADDR_NONE) { h = gethostbyname((const char *) p); if (h == NULL || h->h_addr_list[0] == NULL) { ngx_free(p); u->err = "host not found"; return NGX_ERROR; } u->addr.in_addr = *(in_addr_t *) (h->h_addr_list[0]); } ngx_free(p); } else { u->addr.in_addr = INADDR_ANY; } if (u->no_port) { u->port = u->default_port; } if (u->listen) { return NGX_OK; } if (ngx_inet_resolve_host(pool, u) != NGX_OK) { return NGX_ERROR; } return NGX_OK; } ngx_int_t ngx_inet_resolve_host(ngx_pool_t *pool, ngx_url_t *u) { u_char *p, *host; size_t len; in_addr_t in_addr; ngx_uint_t i; struct hostent *h; struct sockaddr_in *sin; host = ngx_alloc(u->host.len + 1, pool->log); if (host == NULL) { return NGX_ERROR; } (void) ngx_cpystrn(host, u->host.data, u->host.len + 1); /* AF_INET only */ in_addr = inet_addr((char *) host); if (in_addr == INADDR_NONE) { h = gethostbyname((char *) host); ngx_free(host); if (h == NULL || h->h_addr_list[0] == NULL) { u->err = "host not found"; return NGX_ERROR; } if (u->one_addr == 0) { for (i = 0; h->h_addr_list[i] != NULL; i++) { /* void */ } } else { i = 1; } /* MP: ngx_shared_palloc() */ u->addrs = ngx_pcalloc(pool, i * sizeof(ngx_peer_addr_t)); if (u->addrs == NULL) { return NGX_ERROR; } u->naddrs = i; for (i = 0; h->h_addr_list[i] != NULL; i++) { sin = ngx_pcalloc(pool, sizeof(struct sockaddr_in)); if (sin == NULL) { return NGX_ERROR; } sin->sin_family = AF_INET; sin->sin_port = htons(u->port); sin->sin_addr.s_addr = *(in_addr_t *) (h->h_addr_list[i]); u->addrs[i].sockaddr = (struct sockaddr *) sin; u->addrs[i].socklen = sizeof(struct sockaddr_in); len = NGX_INET_ADDRSTRLEN + sizeof(":65536") - 1; p = ngx_pnalloc(pool, len); if (p == NULL) { return NGX_ERROR; } len = ngx_sock_ntop((struct sockaddr *) sin, p, len); u->addrs[i].name.len = ngx_sprintf(&p[len], ":%d", u->port) - p; u->addrs[i].name.data = p; } } else { ngx_free(host); /* MP: ngx_shared_palloc() */ u->addrs = ngx_pcalloc(pool, sizeof(ngx_peer_addr_t)); if (u->addrs == NULL) { return NGX_ERROR; } sin = ngx_pcalloc(pool, sizeof(struct sockaddr_in)); if (sin == NULL) { return NGX_ERROR; } u->naddrs = 1; sin->sin_family = AF_INET; sin->sin_port = htons(u->port); sin->sin_addr.s_addr = in_addr; u->addrs[0].sockaddr = (struct sockaddr *) sin; u->addrs[0].socklen = sizeof(struct sockaddr_in); p = ngx_pnalloc(pool, u->host.len + sizeof(":65536") - 1); if (p == NULL) { return NGX_ERROR; } u->addrs[0].name.len = ngx_sprintf(p, "%V:%d", &u->host, u->port) - p; u->addrs[0].name.data = p; } return NGX_OK; }