124N/A

124N/A#define CORE_PRIVATE

124N/A

1792N/A#include "mod_proxy.h"

1792N/A#include "http_core.h"

1776N/A#include "http_main.h"

1776N/A#include "http_log.h"

1776N/A#include "util_uri.h"

765N/A#include "util_date.h" /* get ap_checkmask() decl. */

765N/A#include "apr_md5.h"

765N/A#include "apr_pools.h"

765N/A

765N/Astatic int proxy_match_ipaddr(struct dirconn_entry *This, request_rec *r);

1792N/Astatic int proxy_match_domainname(struct dirconn_entry *This, request_rec *r);

1792N/Astatic int proxy_match_hostname(struct dirconn_entry *This, request_rec *r);

1792N/Astatic int proxy_match_word(struct dirconn_entry *This, request_rec *r);

765N/Astatic struct per_thread_data *get_per_thread_data(void);

765N/Aint ap_proxy_hex2c(const char *x)

765N/A{

765N/A int i, ch;

1776N/A

124N/A#ifndef CHARSET_EBCDIC

1776N/A ch = x[0];

124N/A if (apr_isdigit(ch))

181N/A i = ch - '0';

124N/A else if (apr_isupper(ch))

124N/A i = ch - ('A' - 10);

124N/A else

124N/A i = ch - ('a' - 10);

i <<= 4;

ch = x[1];

if (apr_isdigit(ch))

i += ch - '0';

else if (apr_isupper(ch))

i += ch - ('A' - 10);

else

i += ch - ('a' - 10);

return i;

#else /*CHARSET_EBCDIC*/

return (1 == sscanf(x, "%2x", &i)) ? os_toebcdic[i&0xFF] : 0;

#endif /*CHARSET_EBCDIC*/

}

void ap_proxy_c2hex(int ch, char *x)

{

#ifndef CHARSET_EBCDIC

int i;

x[0] = '%';

i = (ch & 0xF0) >> 4;

if (i >= 10)

x[1] = ('A' - 10) + i;

else

x[1] = '0' + i;

i = ch & 0x0F;

if (i >= 10)

x[2] = ('A' - 10) + i;

else

x[2] = '0' + i;

#else /*CHARSET_EBCDIC*/

static const char ntoa[] = { "0123456789ABCDEF" };

ch &= 0xFF;

x[0] = '%';

x[1] = ntoa[(os_toascii[ch]>>4)&0x0F];

x[2] = ntoa[os_toascii[ch]&0x0F];

x[3] = '\0';

#endif /*CHARSET_EBCDIC*/

}

char *ap_proxy_canonenc(apr_pool_t *p, const char *x, int len, enum enctype t,

int isenc)

{

int i, j, ch;

char *y;

char *allowed; /* characters which should not be encoded */

char *reserved; /* characters which much not be en/de-coded */

if (t == enc_path)

allowed = "$-_.+!*'(),;:@&=";

else if (t == enc_search)

allowed = "$-_.!*'(),;:@&=";

else if (t == enc_user)

allowed = "$-_.+!*'(),;@&=";

else if (t == enc_fpath)

allowed = "$-_.+!*'(),?:@&=";

else /* if (t == enc_parm) */

allowed = "$-_.+!*'(),?/:@&=";

if (t == enc_path)

reserved = "/";

else if (t == enc_search)

reserved = "+";

else

reserved = "";

y = apr_palloc(p, 3 * len + 1);

for (i = 0, j = 0; i < len; i++, j++) {

ch = x[i];

if (strchr(reserved, ch)) {

y[j] = ch;

continue;

}

if (isenc && ch == '%') {

if (!ap_isxdigit(x[i + 1]) || !ap_isxdigit(x[i + 2]))

return NULL;

ch = ap_proxy_hex2c(&x[i + 1]);

i += 2;

if (ch != 0 && strchr(reserved, ch)) { /* keep it encoded */

ap_proxy_c2hex(ch, &y[j]);

j += 2;

continue;

}

}

if (!apr_isalnum(ch) && !strchr(allowed, ch)) {

ap_proxy_c2hex(ch, &y[j]);

j += 2;

}

else

y[j] = ch;

}

y[j] = '\0';

return y;

}

char *

ap_proxy_canon_netloc(apr_pool_t *p, char **const urlp, char **userp,

char **passwordp, char **hostp, int *port)

{

int i;

char *strp, *host, *url = *urlp;

char *user = NULL, *password = NULL;

if (url[0] != '/' || url[1] != '/')

return "Malformed URL";

host = url + 2;

url = strchr(host, '/');

if (url == NULL)

url = "";

else

*(url++) = '\0'; /* skip seperating '/' */

/* find _last_ '@' since it might occur in user/password part */

strp = strrchr(host, '@');

if (strp != NULL) {

*strp = '\0';

user = host;

host = strp + 1;

strp = strchr(user, ':');

if (strp != NULL) {

*strp = '\0';

password = ap_proxy_canonenc(p, strp + 1, strlen(strp + 1), enc_user, 1);

if (password == NULL)

return "Bad %-escape in URL (password)";

}

user = ap_proxy_canonenc(p, user, strlen(user), enc_user, 1);

if (user == NULL)

return "Bad %-escape in URL (username)";

}

if (userp != NULL) {

*userp = user;

}

if (passwordp != NULL) {

*passwordp = password;

}

strp = strrchr(host, ':');

if (strp != NULL) {

*(strp++) = '\0';

for (i = 0; strp[i] != '\0'; i++)

if (!apr_isdigit(strp[i]))

break;

/* if (i == 0) the no port was given; keep default */

if (strp[i] != '\0') {

return "Bad port number in URL";

} else if (i > 0) {

*port = atoi(strp);

if (*port > 65535)

return "Port number in URL > 65535";

}

}

ap_str_tolower(host); /* DNS names are case-insensitive */

if (*host == '\0')

return "Missing host in URL";

for (i = 0; host[i] != '\0'; i++)

if (!apr_isdigit(host[i]) && host[i] != '.')

break;

/* must be an IP address */

#if defined(WIN32) || defined(NETWARE) || defined(TPF) || defined(BEOS)

if (host[i] == '\0' && (inet_addr(host) == -1))

#else

if (host[i] == '\0' && (ap_inet_addr(host) == -1 || inet_network(host) == -1))

#endif

{

return "Bad IP address in URL";

}

*urlp = url;

*hostp = host;

return NULL;

}

static const char * const lwday[7] =

{"Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"};

const char *

ap_proxy_date_canon(apr_pool_t *p, const char *x1)

{

char *x = apr_pstrdup(p, x1);

int wk, mday, year, hour, min, sec, mon;

char *q, month[4], zone[4], week[4];

q = strchr(x, ',');

/* check for RFC 850 date */

if (q != NULL && q - x > 3 && q[1] == ' ') {

*q = '\0';

for (wk = 0; wk < 7; wk++)

if (strcmp(x, lwday[wk]) == 0)

break;

*q = ',';

if (wk == 7)

return x; /* not a valid date */

if (q[4] != '-' || q[8] != '-' || q[11] != ' ' || q[14] != ':' ||

q[17] != ':' || strcmp(&q[20], " GMT") != 0)

return x;

if (sscanf(q + 2, "%u-%3s-%u %u:%u:%u %3s", &mday, month, &year,

&hour, &min, &sec, zone) != 7)

return x;

if (year < 70)

year += 2000;

else

year += 1900;

}

else {

if (x[3] != ' ' || x[7] != ' ' || x[10] != ' ' || x[13] != ':' ||

x[16] != ':' || x[19] != ' ' || x[24] != '\0')

return x;

if (sscanf(x, "%3s %3s %u %u:%u:%u %u", week, month, &mday, &hour,

&min, &sec, &year) != 7)

return x;

for (wk = 0; wk < 7; wk++)

if (strcmp(week, ap_day_snames[wk]) == 0)

break;

if (wk == 7)

return x;

}

for (mon = 0; mon < 12; mon++)

if (strcmp(month, ap_month_snames[mon]) == 0)

break;

if (mon == 12)

return x;

q = apr_palloc(p, 30);

apr_snprintf(q, 30, "%s, %.2d %s %d %.2d:%.2d:%.2d GMT", ap_day_snames[wk],

mday, ap_month_snames[mon], year, hour, min, sec);

return q;

}

static request_rec *make_fake_req(conn_rec *c)

{

request_rec *r = apr_pcalloc(c->pool, sizeof(*r));

core_request_config *req_cfg;

r->pool = c->pool;

r->status = HTTP_OK;

r->headers_in = apr_make_table(r->pool, 50);

r->subprocess_env = apr_make_table(r->pool, 50);

r->headers_out = apr_make_table(r->pool, 12);

r->err_headers_out = apr_make_table(r->pool, 5);

r->notes = apr_make_table(r->pool, 5);

r->read_body = REQUEST_NO_BODY;

r->connection = c;

r->output_filters = c->output_filters;

r->input_filters = c->input_filters;

r->request_config = ap_create_request_config(r->pool);

req_cfg = apr_pcalloc(r->pool, sizeof(core_request_config));

req_cfg->bb = ap_brigade_create(r->pool);

ap_set_module_config(r->request_config, &core_module, req_cfg);

return r;

}

apr_table_t *ap_proxy_read_headers(request_rec *r, char *buffer, int size, conn_rec *c)

{

apr_table_t *resp_hdrs;

int len;

char *value, *end;

char field[MAX_STRING_LEN];

request_rec *rr = make_fake_req(c);

resp_hdrs = ap_make_table(r->pool, 20);

/*

while ((len = ap_getline(buffer, size, rr, 1)) > 0) {

if (!(value = strchr(buffer, ':'))) { /* Find the colon separator */

/* Buggy MS IIS servers sometimes return invalid headers

if (!ap_checkmask(buffer, "HTTP/#.# ###*")) {

/* Nope, it wasn't even an extra HTTP header. Give up. */

return NULL;

}

ap_log_error(APLOG_MARK, APLOG_WARNING|APLOG_NOERRNO, 0, r->server,

"proxy: Ignoring duplicate HTTP header "

"returned by %s (%s)", r->uri, r->method);

continue;

}

*value = '\0';

++value;

/* XXX: RFC2068 defines only SP and HT as whitespace, this test is

while (apr_isspace(*value))

++value; /* Skip to start of value */

/* should strip trailing whitespace as well */

for (end = &value[strlen(value)-1]; end > value && apr_isspace(*end); --end)

*end = '\0';

ap_table_add(resp_hdrs, buffer, value);

/* the header was too long; at the least we should skip extra data */

if (len >= size - 1) {

while ((len = ap_getline(field, MAX_STRING_LEN, r, 1))

>= MAX_STRING_LEN - 1) {

/* soak up the extra data */

}

if (len == 0) /* time to exit the larger loop as well */

break;

}

}

return resp_hdrs;

}

long int ap_proxy_send_fb(proxy_completion *completion, BUFF *f, request_rec *r, ap_cache_el *c)

{

int ok;

char buf[IOBUFSIZE];

long total_bytes_rcvd, in_buffer;

apr_ssize_t cntr;

register int n, o;

conn_rec *con = r->connection;

int alternate_timeouts = 1; /* 1 if we alternate between soft & hard timeouts */

apr_file_t *cachefp = NULL;

int written = 0, wrote_to_cache;

total_bytes_rcvd = 0;

if (c) ap_cache_el_data(c, &cachefp);

#if 0

#ifdef CHARSET_EBCDIC

/* The cache copy is ASCII, not EBCDIC, even for text/html) */

ap_bsetflag(f, B_ASCII2EBCDIC|B_EBCDIC2ASCII, 0);

if (c != NULL && c->fp != NULL)

ap_bsetflag(c->fp, B_ASCII2EBCDIC|B_EBCDIC2ASCII, 0);

ap_bsetflag(con->client, B_ASCII2EBCDIC|B_EBCDIC2ASCII, 0);

#endif

#endif

/* Since we are reading from one buffer and writing to another,

#if defined(WIN32) || defined(TPF) || defined(NETWARE)

/* works fine under win32, so leave it */

alternate_timeouts = 0;

#else

/* CHECKME! Since hard_timeout won't work in unix on sends with partial

if (!completion || completion->content_length > 0

|| completion->cache_completion == 1.0) {

alternate_timeouts = 0;

}

#endif

/* Loop and ap_bread() while we can successfully read and write,

for (ok = 1; ok; cntr = 0) {

/* Read block from server */

if (ap_bread(f, buf, IOBUFSIZE, &cntr) != APR_SUCCESS && !cntr)

{

if (c != NULL) {

ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r,

"proxy: error reading from %s", c->name);

ap_proxy_cache_error(&c);

}

break;

}

else if(cntr == 0) break;

/* Write to cache first. */

/*@@@ XXX FIXME: Assuming that writing the cache file won't time out?!!? */

wrote_to_cache = cntr;

if (cachefp && apr_write(cachefp, &buf[0], &wrote_to_cache) != APR_SUCCESS) {

ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r,

"proxy: error writing to cache");

ap_proxy_cache_error(&c);

} else {

written += n;

}

o = 0;

total_bytes_rcvd += cntr;

in_buffer = cntr;

/* Write the block to the client, detect aborted transfers */

while (!con->aborted && in_buffer > 0) {

if ((cntr = ap_rwrite(&buf[o], in_buffer, r))) {

if (completion) {

/* when a send failure occurs, we need to decide

ok = (completion->content_length > 0) &&

(completion->cache_completion > 0) &&

(completion->content_length * completion->cache_completion < total_bytes_rcvd);

if (!ok)

ap_proxy_cache_error(&c);

}

con->aborted = 1;

break;

}

in_buffer -= cntr;

o += cntr;

} /* while client alive and more data to send */

} /* loop and ap_bread while "ok" */

if (!con->aborted)

ap_rflush(r);

return total_bytes_rcvd;

}

void ap_proxy_send_headers(request_rec *r, const char *respline, apr_table_t *t)

{

int i;

apr_socket_t *fp = r->connection->client_socket;

apr_table_entry_t *elts = (apr_table_entry_t *) apr_table_elts(t)->elts;

char *temp = apr_pstrcat(r->pool, respline, CRLF, NULL);

apr_size_t len = strlen(temp);

apr_send(fp, temp, &len);

for (i = 0; i < ap_table_elts(t)->nelts; ++i) {

if (elts[i].key != NULL) {

temp = apr_pstrcat(r->pool, elts[i].key, ": ", elts[i].val, CRLF, NULL);

apr_send(fp, temp, &len);

apr_table_addn(r->headers_out, elts[i].key, elts[i].val);

}

}

len = 2;

apr_send(fp, CRLF, &len);

}

int ap_proxy_liststr(const char *list, const char *val)

{

int len, i;

const char *p;

len = strlen(val);

while (list != NULL) {

p = ap_strchr_c(list, ',');

if (p != NULL) {

i = p - list;

do

p++;

while (apr_isspace(*p));

}

else

i = strlen(list);

while (i > 0 && apr_isspace(list[i - 1]))

i--;

if (i == len && strncasecmp(list, val, len) == 0)

return 1;

list = p;

}

return 0;

}

int ap_proxy_hex2sec(const char *x)

{

int i, ch;

unsigned int j;

for (i = 0, j = 0; i < 8; i++) {

ch = x[i];

j <<= 4;

if (apr_isdigit(ch))

j |= ch - '0';

else if (apr_isupper(ch))

j |= ch - ('A' - 10);

else

j |= ch - ('a' - 10);

}

if (j == 0xffffffff)

return -1; /* so that it works with 8-byte ints */

else

return j;

}

void ap_proxy_sec2hex(int t, char *y)

{

int i, ch;

unsigned int j = t;

for (i = 7; i >= 0; i--) {

ch = j & 0xF;

j >>= 4;

if (ch >= 10)

y[i] = ch + ('A' - 10);

else

y[i] = ch + '0';

}

y[8] = '\0';

}

void ap_proxy_cache_error(ap_cache_el **c)

{

if (c && *c) {

const char *name = (*c)->name;

ap_cache_el_finalize((*c));

ap_cache_remove((*c)->cache, name);

*c = NULL;

}

}

int ap_proxyerror(request_rec *r, int statuscode, const char *message)

{

apr_table_setn(r->notes, "error-notes",

apr_pstrcat(r->pool,

"The proxy server could not handle the request "

"<EM><A HREF=\"", ap_escape_uri(r->pool, r->uri),

"\">", ap_escape_html(r->pool, r->method),

"&nbsp;",

ap_escape_html(r->pool, r->uri), "</A></EM>.<P>\n"

"Reason: <STRONG>",

ap_escape_html(r->pool, message),

"</STRONG>", NULL));

/* Allow "error-notes" string to be printed by ap_send_error_response() */

apr_table_setn(r->notes, "verbose-error-to", apr_pstrdup(r->pool, "*"));

r->status_line = apr_psprintf(r->pool, "%3.3u Proxy Error", statuscode);

return statuscode;

}

const char *ap_proxy_host2addr(const char *host, struct hostent *reqhp)

{

int i;

struct hostent *hp;

struct per_thread_data *ptd = get_per_thread_data();

for (i = 0; host[i] != '\0'; i++)

if (!apr_isdigit(host[i]) && host[i] != '.')

break;

if (host[i] != '\0') {

hp = gethostbyname(host);

if (hp == NULL)

return "Host not found";

}

else {

ptd->ipaddr = ap_inet_addr(host);

hp = gethostbyaddr((char *) &ptd->ipaddr, sizeof(ptd->ipaddr), AF_INET);

if (hp == NULL) {

memset(&ptd->hpbuf, 0, sizeof(ptd->hpbuf));

ptd->hpbuf.h_name = 0;

ptd->hpbuf.h_addrtype = AF_INET;

ptd->hpbuf.h_length = sizeof(ptd->ipaddr);

ptd->hpbuf.h_addr_list = ptd->charpbuf;

ptd->hpbuf.h_addr_list[0] = (char *) &ptd->ipaddr;

ptd->hpbuf.h_addr_list[1] = 0;

hp = &ptd->hpbuf;

}

}

*reqhp = *hp;

return NULL;

}

static const char *

proxy_get_host_of_request(request_rec *r)

{

char *url, *user = NULL, *password = NULL, *err, *host;

int port = -1;

if (r->hostname != NULL)

return r->hostname;

/* Set url to the first char after "scheme://" */

if ((url = strchr(r->uri, ':')) == NULL

|| url[1] != '/' || url[2] != '/')

return NULL;

url = apr_pstrdup(r->pool, &url[1]); /* make it point to "//", which is what proxy_canon_netloc expects */

err = ap_proxy_canon_netloc(r->pool, &url, &user, &password, &host, &port);

if (err != NULL)

ap_log_rerror(APLOG_MARK, APLOG_ERR|APLOG_NOERRNO, 0, r,

"%s", err);

r->hostname = host;

return host; /* ought to return the port, too */

}

int ap_proxy_is_ipaddr(struct dirconn_entry *This, apr_pool_t *p)

{

const char *addr = This->name;

long ip_addr[4];

int i, quads;

long bits;

/* if the address is given with an explicit netmask, use that */

/* Due to a deficiency in ap_inet_addr(), it is impossible to parse */

/* "partial" addresses (with less than 4 quads) correctly, i.e. */

/* 192.168.123 is parsed as 192.168.0.123, which is not what I want. */

/* I therefore have to parse the IP address manually: */

/*if (proxy_readmask(This->name, &This->addr.s_addr, &This->mask.s_addr) == 0) */

/* addr and mask were set by proxy_readmask() */

/*return 1; */

/* Parse IP addr manually, optionally allowing */

/* abbreviated net addresses like 192.168. */

/* Iterate over up to 4 (dotted) quads. */

for (quads = 0; quads < 4 && *addr != '\0'; ++quads) {

char *tmp;

if (*addr == '/' && quads > 0) /* netmask starts here. */

break;

if (!apr_isdigit(*addr))

return 0; /* no digit at start of quad */

ip_addr[quads] = strtol(addr, &tmp, 0);

if (tmp == addr) /* expected a digit, found something else */

return 0;

if (ip_addr[quads] < 0 || ip_addr[quads] > 255) {

/* invalid octet */

return 0;

}

addr = tmp;

if (*addr == '.' && quads != 3)

++addr; /* after the 4th quad, a dot would be illegal */

}

for (This->addr.s_addr = 0, i = 0; i < quads; ++i)

This->addr.s_addr |= htonl(ip_addr[i] << (24 - 8 * i));

if (addr[0] == '/' && apr_isdigit(addr[1])) { /* net mask follows: */

char *tmp;

++addr;

bits = strtol(addr, &tmp, 0);

if (tmp == addr) /* expected a digit, found something else */

return 0;

addr = tmp;

if (bits < 0 || bits > 32) /* netmask must be between 0 and 32 */

return 0;

}

else {

/* Determine (i.e., "guess") netmask by counting the */

/* number of trailing .0's; reduce #quads appropriately */

/* (so that 192.168.0.0 is equivalent to 192.168.) */

while (quads > 0 && ip_addr[quads - 1] == 0)

--quads;

/* "IP Address should be given in dotted-quad form, optionally followed by a netmask (e.g., 192.168.111.0/24)"; */

if (quads < 1)

return 0;

/* every zero-byte counts as 8 zero-bits */

bits = 8 * quads;

if (bits != 32) /* no warning for fully qualified IP address */

ap_log_error(APLOG_MARK, APLOG_STARTUP | APLOG_NOERRNO, 0, NULL,

"Warning: NetMask not supplied with IP-Addr; guessing: %s/%ld\n",

inet_ntoa(This->addr), bits);

}

This->mask.s_addr = htonl(INADDR_NONE << (32 - bits));

if (*addr == '\0' && (This->addr.s_addr & ~This->mask.s_addr) != 0) {

ap_log_error(APLOG_MARK, APLOG_STARTUP | APLOG_NOERRNO, 0, NULL,

"Warning: NetMask and IP-Addr disagree in %s/%ld\n",

inet_ntoa(This->addr), bits);

This->addr.s_addr &= This->mask.s_addr;

ap_log_error(APLOG_MARK, APLOG_STARTUP | APLOG_NOERRNO, 0, NULL,

" Set to %s/%ld\n",

inet_ntoa(This->addr), bits);

}

if (*addr == '\0') {

This->matcher = proxy_match_ipaddr;

return 1;

}

else

return (*addr == '\0'); /* okay iff we've parsed the whole string */

}

static int proxy_match_ipaddr(struct dirconn_entry *This, request_rec *r)

{

int i;

int ip_addr[4];

struct in_addr addr;

struct in_addr *ip_list;

char **ip_listptr;

const char *found;

const char *host = proxy_get_host_of_request(r);

if (host == NULL) /* oops! */

return 0;

memset(&addr, '\0', sizeof addr);

memset(ip_addr, '\0', sizeof ip_addr);

if (4 == sscanf(host, "%d.%d.%d.%d", &ip_addr[0], &ip_addr[1], &ip_addr[2], &ip_addr[3])) {

for (addr.s_addr = 0, i = 0; i < 4; ++i)

addr.s_addr |= htonl(ip_addr[i] << (24 - 8 * i));

if (This->addr.s_addr == (addr.s_addr & This->mask.s_addr)) {

#if DEBUGGING

ap_log_error(APLOG_MARK, APLOG_STARTUP | APLOG_NOERRNO, 0, NULL,

"1)IP-Match: %s[%s] <-> ", host, inet_ntoa(addr));

ap_log_error(APLOG_MARK, APLOG_STARTUP | APLOG_NOERRNO, 0, NULL,

"%s/", inet_ntoa(This->addr));

ap_log_error(APLOG_MARK, APLOG_STARTUP | APLOG_NOERRNO, 0, NULL,

"%s", inet_ntoa(This->mask));

#endif

return 1;

}

#if DEBUGGING

else {

ap_log_error(APLOG_MARK, APLOG_STARTUP | APLOG_NOERRNO, 0, NULL,

"1)IP-NoMatch: %s[%s] <-> ", host, inet_ntoa(addr));

ap_log_error(APLOG_MARK, APLOG_STARTUP | APLOG_NOERRNO, 0, NULL,

"%s/", inet_ntoa(This->addr));

ap_log_error(APLOG_MARK, APLOG_STARTUP | APLOG_NOERRNO, 0, NULL,

"%s", inet_ntoa(This->mask));

}

#endif

}

else {

struct hostent the_host;

memset(&the_host, '\0', sizeof the_host);

found = ap_proxy_host2addr(host, &the_host);

if (found != NULL) {

#if DEBUGGING

ap_log_error(APLOG_MARK, APLOG_STARTUP | APLOG_NOERRNO, 0, NULL,

"2)IP-NoMatch: hostname=%s msg=%s", host, found);

#endif

return 0;

}

if (the_host.h_name != NULL)

found = the_host.h_name;

else

found = host;

/* Try to deal with multiple IP addr's for a host */

for (ip_listptr = the_host.h_addr_list; *ip_listptr; ++ip_listptr) {

ip_list = (struct in_addr *) *ip_listptr;

if (This->addr.s_addr == (ip_list->s_addr & This->mask.s_addr)) {

#if DEBUGGING

ap_log_error(APLOG_MARK, APLOG_STARTUP | APLOG_NOERRNO, 0, NULL,

"3)IP-Match: %s[%s] <-> ", found, inet_ntoa(*ip_list));

ap_log_error(APLOG_MARK, APLOG_STARTUP | APLOG_NOERRNO, 0, NULL,

"%s/", inet_ntoa(This->addr));

ap_log_error(APLOG_MARK, APLOG_STARTUP | APLOG_NOERRNO, 0, NULL,

"%s", inet_ntoa(This->mask));

#endif

return 1;

}

#if DEBUGGING

else {

ap_log_error(APLOG_MARK, APLOG_STARTUP | APLOG_NOERRNO, 0, NULL,

"3)IP-NoMatch: %s[%s] <-> ", found, inet_ntoa(*ip_list));

ap_log_error(APLOG_MARK, APLOG_STARTUP | APLOG_NOERRNO, 0, NULL,

"%s/", inet_ntoa(This->addr));

ap_log_error(APLOG_MARK, APLOG_STARTUP | APLOG_NOERRNO, 0, NULL,

"%s", inet_ntoa(This->mask));

}

#endif

}

}

return 0;

}

int ap_proxy_is_domainname(struct dirconn_entry *This, apr_pool_t *p)

{

char *addr = This->name;

int i;

/* Domain name must start with a '.' */

if (addr[0] != '.')

return 0;

/* rfc1035 says DNS names must consist of "[-a-zA-Z0-9]" and '.' */

for (i = 0; apr_isalnum(addr[i]) || addr[i] == '-' || addr[i] == '.'; ++i)

continue;

#if 0

if (addr[i] == ':') {

ap_log_error(APLOG_MARK, APLOG_STARTUP | APLOG_NOERRNO, 0, NULL,

"@@@@ handle optional port in proxy_is_domainname()");

/* @@@@ handle optional port */

}

#endif

if (addr[i] != '\0')

return 0;

/* Strip trailing dots */

for (i = strlen(addr) - 1; i > 0 && addr[i] == '.'; --i)

addr[i] = '\0';

This->matcher = proxy_match_domainname;

return 1;

}

static int proxy_match_domainname(struct dirconn_entry *This, request_rec *r)

{

const char *host = proxy_get_host_of_request(r);

int d_len = strlen(This->name), h_len;

if (host == NULL) /* some error was logged already */

return 0;

h_len = strlen(host);

/* @@@ do this within the setup? */

/* Ignore trailing dots in domain comparison: */

while (d_len > 0 && This->name[d_len - 1] == '.')

--d_len;

while (h_len > 0 && host[h_len - 1] == '.')

--h_len;

return h_len > d_len

&& strncasecmp(&host[h_len - d_len], This->name, d_len) == 0;

}

static struct hostent * pduphostent(apr_pool_t *p, const struct hostent *hp)

{

struct hostent *newent;

char **ptrs;

char **aliases;

struct in_addr *addrs;

int i = 0, j = 0;

if (hp == NULL)

return NULL;

/* Count number of alias entries */

if (hp->h_aliases != NULL)

for (; hp->h_aliases[j] != NULL; ++j)

continue;

/* Count number of in_addr entries */

if (hp->h_addr_list != NULL)

for (; hp->h_addr_list[i] != NULL; ++i)

continue;

/* Allocate hostent structure, alias ptrs, addr ptrs, addrs */

newent = (struct hostent *) apr_palloc(p, sizeof(*hp));

aliases = (char **) apr_palloc(p, (j+1) * sizeof(char*));

ptrs = (char **) apr_palloc(p, (i+1) * sizeof(char*));

addrs = (struct in_addr *) apr_palloc(p, (i+1) * sizeof(struct in_addr));

*newent = *hp;

newent->h_name = apr_pstrdup(p, hp->h_name);

newent->h_aliases = aliases;

newent->h_addr_list = (char**) ptrs;

/* Copy Alias Names: */

for (j = 0; hp->h_aliases[j] != NULL; ++j) {

aliases[j] = apr_pstrdup(p, hp->h_aliases[j]);

}

aliases[j] = NULL;

/* Copy address entries */

for (i = 0; hp->h_addr_list[i] != NULL; ++i) {

ptrs[i] = (char*) &addrs[i];

addrs[i] = *(struct in_addr *) hp->h_addr_list[i];

}

ptrs[i] = NULL;

return newent;

}

int ap_proxy_is_hostname(struct dirconn_entry *This, apr_pool_t *p)

{

struct hostent host;

char *addr = This->name;

int i;

/* Host names must not start with a '.' */

if (addr[0] == '.')

return 0;

/* rfc1035 says DNS names must consist of "[-a-zA-Z0-9]" and '.' */

for (i = 0; apr_isalnum(addr[i]) || addr[i] == '-' || addr[i] == '.'; ++i);

#if 0

if (addr[i] == ':') {

ap_log_error(APLOG_MARK, APLOG_STARTUP | APLOG_NOERRNO, 0, NULL,

"@@@@ handle optional port in proxy_is_hostname()");

/* @@@@ handle optional port */

}

#endif

if (addr[i] != '\0' || ap_proxy_host2addr(addr, &host) != NULL)

return 0;

This->hostentry = pduphostent (p, &host);

/* Strip trailing dots */

for (i = strlen(addr) - 1; i > 0 && addr[i] == '.'; --i)

addr[i] = '\0';

This->matcher = proxy_match_hostname;

return 1;

}

static int proxy_match_hostname(struct dirconn_entry *This, request_rec *r)

{

char *host = This->name;

const char *host2 = proxy_get_host_of_request(r);

int h2_len;

int h1_len;

if (host == NULL || host2 == NULL)

return 0; /* oops! */

h2_len = strlen(host2);

h1_len = strlen(host);

#if 0

unsigned long *ip_list;

/* Try to deal with multiple IP addr's for a host */

for (ip_list = *This->hostentry->h_addr_list; *ip_list != 0UL; ++ip_list)

if (*ip_list == ? ? ? ? ? ? ? ? ? ? ? ? ?)

return 1;

#endif

/* Ignore trailing dots in host2 comparison: */

while (h2_len > 0 && host2[h2_len - 1] == '.')

--h2_len;

while (h1_len > 0 && host[h1_len - 1] == '.')

--h1_len;

return h1_len == h2_len

&& strncasecmp(host, host2, h1_len) == 0;

}

int ap_proxy_is_word(struct dirconn_entry *This, apr_pool_t *p)

{

This->matcher = proxy_match_word;

return 1;

}

static int proxy_match_word(struct dirconn_entry *This, request_rec *r)

{

const char *host = proxy_get_host_of_request(r);

return host != NULL && ap_strstr_c(host, This->name) != NULL;

}

apr_status_t ap_proxy_doconnect(apr_socket_t *sock, char *host, apr_uint32_t port, request_rec *r)

{

apr_status_t rv;

apr_sockaddr_t *destsa;

rv = apr_getaddrinfo(&destsa, host, AF_INET, port, 0, r->pool);

if (rv == APR_SUCCESS) {

rv = apr_connect(sock, destsa);

}

else if (rv != APR_SUCCESS) {

ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r,

"proxy connect to %s port %d failed", host, port);

}

return rv;

}

int ap_proxy_send_hdr_line(void *p, const char *key, const char *value)

{

struct request_rec *r = (struct request_rec *)p;

if (key == NULL || value == NULL || value[0] == '\0')

return 1;

if (!r->assbackwards)

ap_rvputs(r, key, ": ", value, CRLF, NULL);

return 1; /* tell ap_table_do() to continue calling us for more headers */

}

unsigned ap_proxy_bputs2(const char *data, apr_socket_t *client, ap_cache_el *cache)

{

unsigned len = strlen(data);

apr_file_t *cachefp = NULL;

apr_send(client, data, &len);

if (ap_cache_el_data(cache, &cachefp) == APR_SUCCESS)

apr_puts(data, cachefp);

return len;

}

#if defined WIN32

static DWORD tls_index;

BOOL WINAPI DllMain (HINSTANCE dllhandle, DWORD reason, LPVOID reserved)

{

LPVOID memptr;

switch (reason) {

case DLL_PROCESS_ATTACH:

tls_index = TlsAlloc();

case DLL_THREAD_ATTACH: /* intentional no break */

TlsSetValue (tls_index, malloc (sizeof (struct per_thread_data)));

break;

case DLL_THREAD_DETACH:

memptr = TlsGetValue (tls_index);

if (memptr) {

free (memptr);

TlsSetValue (tls_index, 0);

}

break;

}

return TRUE;

}

#endif

static struct per_thread_data *get_per_thread_data(void)

{

#if 0

#if defined(WIN32)

return (struct per_thread_data *) TlsGetValue (tls_index);

#else

static APACHE_TLS struct per_thread_data sptd;

return &sptd;

#endif

#endif

return NULL;

}

int ap_proxy_cache_send(request_rec *r, ap_cache_el *c)

{

apr_file_t *cachefp = NULL;

apr_socket_t *fp = r->connection->client_socket;

char buffer[500];

apr_size_t len;

apr_off_t offset = 0;

apr_finfo_t finfo;

ap_log_error(APLOG_MARK, APLOG_DEBUG|APLOG_NOERRNO, 0, NULL,

"Sending cache file for %s", c->name);

if(ap_cache_el_data(c, &cachefp) != APR_SUCCESS)

return HTTP_INTERNAL_SERVER_ERROR;

/* send the response */

if(apr_fgets(buffer, sizeof(buffer), cachefp)) {

len = strlen(buffer);

apr_send(fp, buffer, &len);

offset +=len;

}

/* send headers */

ap_cache_el_header_walk(c, ap_proxy_send_hdr_line, r, NULL);

len = 2;

apr_send(fp, CRLF, &len);

/* send data */

apr_getfileinfo(&finfo, cachefp);

if(!r->header_only && ap_send_fd(cachefp, r, offset, finfo.size, &len))

return HTTP_INTERNAL_SERVER_ERROR;

return OK;

}

int ap_proxy_cache_should_cache(request_rec *r, apr_table_t *resp_hdrs, const int is_HTTP1)

{

const char *expire = apr_table_get(resp_hdrs, "Expires");

time_t expc;

if (expire != NULL)

expc = ap_parseHTTPdate(expire);

else

expc = BAD_DATE;

if((r->status != HTTP_OK && r->status != HTTP_MOVED_PERMANENTLY && r->status != HTTP_NOT_MODIFIED) ||

(r->status == HTTP_NOT_MODIFIED) ||

r->header_only ||

apr_table_get(r->headers_in, "Authorization") != NULL ||

(expire != NULL && expc == BAD_DATE) ||

(r->status == HTTP_OK && !apr_table_get(resp_hdrs, "Last-Modified") && is_HTTP1))

{

ap_log_error(APLOG_MARK, APLOG_DEBUG|APLOG_NOERRNO, 0, NULL,

"proxy: Response is not cacheable: %s", r->unparsed_uri);

return 0;

}

return 1;

}