gaim/gaim

This is a temporary fix for the rate limit problems.
oldstatus
2005-10-15, Mark Doliner
649cffd7a416
This is a temporary fix for the rate limit problems.

Cause: Gaim uses the SNAC 0x0004/0x0015 to fetch the away message
of each user in your buddy list. Previously this SNAC was in a
"rate class" that had an extremely lenient rate limit. Gaim would
fetch a new away message at most every 1.3 seconds. AOL recently
moved this SNAC to be in the same rate class as most of the other
SNACs (send IM, add buddy, connect to chat room, etc.) My temporary
fix is to bump this delay to 10 seconds.

We copied this functionality from iChat, and it looks like they
might actually be having the same problem (but I didn't even take
a packet capture to verify). If this is the case, AOL is really
stupid.

Possibly better fixes:
* Use the rate information to delay packets so that we never hit
a rate limit
* There may be a different SNAC that is now more leniently rate
limited. Possibly 0x0002/0x0005 or 0x0004/0x0006.
/**
* @file proxy.c Proxy API
* @ingroup core
*
* gaim
*
* Gaim is the legal property of its developers, whose names are too numerous
* to list here. Please refer to the COPYRIGHT file distributed with this
* source distribution.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
/* this is a little piece of code to handle proxy connection */
/* it is intended to : 1st handle http proxy, using the CONNECT command
, 2nd provide an easy way to add socks support
, 3rd draw women to it like flies to honey */
#include "internal.h"
#include "debug.h"
#include "notify.h"
#include "prefs.h"
#include "proxy.h"
#include "util.h"
#include "md5.h"
#include "gaim.h"
static GaimProxyInfo *global_proxy_info = NULL;
struct PHB {
GaimInputFunction func;
gpointer data;
char *host;
int port;
gint inpa;
GaimProxyInfo *gpi;
GaimAccount *account;
GSList *hosts;
};
static void try_connect(struct PHB *);
const char* socks5errors[] = {
"succeeded\n",
"general SOCKS server failure\n",
"connection not allowed by ruleset\n",
"Network unreachable\n",
"Host unreachable\n",
"Connection refused\n",
"TTL expired\n",
"Command not supported\n",
"Address type not supported\n"
};
/**************************************************************************
* Proxy structure API
**************************************************************************/
GaimProxyInfo *
gaim_proxy_info_new(void)
{
return g_new0(GaimProxyInfo, 1);
}
void
gaim_proxy_info_destroy(GaimProxyInfo *info)
{
g_return_if_fail(info != NULL);
if (info->host != NULL) g_free(info->host);
if (info->username != NULL) g_free(info->username);
if (info->password != NULL) g_free(info->password);
g_free(info);
}
void
gaim_proxy_info_set_type(GaimProxyInfo *info, GaimProxyType type)
{
g_return_if_fail(info != NULL);
info->type = type;
}
void
gaim_proxy_info_set_host(GaimProxyInfo *info, const char *host)
{
g_return_if_fail(info != NULL);
if (info->host != NULL)
g_free(info->host);
info->host = (host == NULL ? NULL : g_strdup(host));
}
void
gaim_proxy_info_set_port(GaimProxyInfo *info, int port)
{
g_return_if_fail(info != NULL);
info->port = port;
}
void
gaim_proxy_info_set_username(GaimProxyInfo *info, const char *username)
{
g_return_if_fail(info != NULL);
if (info->username != NULL)
g_free(info->username);
info->username = (username == NULL ? NULL : g_strdup(username));
}
void
gaim_proxy_info_set_password(GaimProxyInfo *info, const char *password)
{
g_return_if_fail(info != NULL);
if (info->password != NULL)
g_free(info->password);
info->password = (password == NULL ? NULL : g_strdup(password));
}
GaimProxyType
gaim_proxy_info_get_type(const GaimProxyInfo *info)
{
g_return_val_if_fail(info != NULL, GAIM_PROXY_NONE);
return info->type;
}
const char *
gaim_proxy_info_get_host(const GaimProxyInfo *info)
{
g_return_val_if_fail(info != NULL, NULL);
return info->host;
}
int
gaim_proxy_info_get_port(const GaimProxyInfo *info)
{
g_return_val_if_fail(info != NULL, 0);
return info->port;
}
const char *
gaim_proxy_info_get_username(const GaimProxyInfo *info)
{
g_return_val_if_fail(info != NULL, NULL);
return info->username;
}
const char *
gaim_proxy_info_get_password(const GaimProxyInfo *info)
{
g_return_val_if_fail(info != NULL, NULL);
return info->password;
}
/**************************************************************************
* Global Proxy API
**************************************************************************/
GaimProxyInfo *
gaim_global_proxy_get_info(void)
{
return global_proxy_info;
}
/**************************************************************************
* Proxy API
**************************************************************************/
typedef void (*dns_callback_t)(GSList *hosts, gpointer data,
const char *error_message);
#if defined __unix__
/* This structure represents both a pending DNS request and
* a free child process.
*/
typedef struct {
char *host;
int port;
dns_callback_t callback;
gpointer data;
gint inpa;
int fd_in, fd_out;
pid_t dns_pid;
} pending_dns_request_t;
static GSList *free_dns_children = NULL;
static GQueue *queued_requests = NULL;
static int number_of_dns_children = 0;
const int MAX_DNS_CHILDREN = 2;
typedef struct {
char hostname[512];
int port;
} dns_params_t;
typedef struct {
dns_params_t params;
dns_callback_t callback;
gpointer data;
} queued_dns_request_t;
static void req_free(pending_dns_request_t *req)
{
g_return_if_fail(req != NULL);
if(req->host)
g_free(req->host);
close(req->fd_in);
close(req->fd_out);
g_free(req);
number_of_dns_children--;
}
static int send_dns_request_to_child(pending_dns_request_t *req, dns_params_t *dns_params)
{
char ch;
int rc;
/* Are you alive? */
if(kill(req->dns_pid, 0) != 0) {
gaim_debug(GAIM_DEBUG_WARNING, "dns",
"DNS child %d no longer exists\n", req->dns_pid);
return -1;
}
/* Let's contact this lost child! */
rc = write(req->fd_in, dns_params, sizeof(*dns_params));
if(rc<0) {
gaim_debug(GAIM_DEBUG_ERROR, "dns",
"Unable to write to DNS child %d: %d\n",
req->dns_pid, strerror(errno));
close(req->fd_in);
return -1;
}
g_return_val_if_fail(rc == sizeof(*dns_params), -1);
/* Did you hear me? (This avoids some race conditions) */
rc = read(req->fd_out, &ch, 1);
if(rc != 1 || ch!='Y') {
gaim_debug(GAIM_DEBUG_WARNING, "dns",
"DNS child %d not responding. Killing it!\n",
req->dns_pid);
kill(req->dns_pid, SIGKILL);
return -1;
}
gaim_debug(GAIM_DEBUG_INFO, "dns",
"Successfully sent DNS request to child %d\n", req->dns_pid);
return 0;
}
static void host_resolved(gpointer data, gint source, GaimInputCondition cond);
static void release_dns_child(pending_dns_request_t *req)
{
g_free(req->host);
req->host=NULL;
if(queued_requests && !g_queue_is_empty(queued_requests)) {
queued_dns_request_t *r = g_queue_pop_head(queued_requests);
req->host = g_strdup(r->params.hostname);
req->port = r->params.port;
req->callback = r->callback;
req->data = r->data;
gaim_debug(GAIM_DEBUG_INFO, "dns",
"Processing queued DNS query for '%s' with child %d\n",
req->host, req->dns_pid);
if(send_dns_request_to_child(req, &(r->params)) != 0) {
req_free(req);
req = NULL;
gaim_debug(GAIM_DEBUG_WARNING, "dns",
"Intent of process queued query of '%s' failed, "
"requeueing...\n", r->params.hostname);
g_queue_push_head(queued_requests, r);
} else {
req->inpa = gaim_input_add(req->fd_out, GAIM_INPUT_READ, host_resolved, req);
g_free(r);
}
} else {
req->host = NULL;
req->callback = NULL;
req->data = NULL;
free_dns_children = g_slist_append(free_dns_children, req);
}
}
static void host_resolved(gpointer data, gint source, GaimInputCondition cond)
{
pending_dns_request_t *req = (pending_dns_request_t*)data;
int rc, err;
GSList *hosts = NULL;
struct sockaddr *addr = NULL;
size_t addrlen;
gaim_debug(GAIM_DEBUG_INFO, "dns", "Host '%s' resolved\n", req->host);
gaim_input_remove(req->inpa);
rc=read(req->fd_out, &err, sizeof(err));
if((rc==4) && (err!=0)) {
char message[1024];
#if HAVE_GETADDRINFO
g_snprintf(message, sizeof(message), "DNS error: %s (pid=%d)",
gai_strerror(err), req->dns_pid);
#else
g_snprintf(message, sizeof(message), "DNS error: %d (pid=%d)",
err, req->dns_pid);
#endif
gaim_debug(GAIM_DEBUG_ERROR, "dns", "%s\n", message);
req->callback(NULL, req->data, message);
release_dns_child(req);
return;
}
if(rc>0) {
while(rc > 0) {
rc=read(req->fd_out, &addrlen, sizeof(addrlen));
if(rc>0 && addrlen > 0) {
addr=g_malloc(addrlen);
rc=read(req->fd_out, addr, addrlen);
hosts = g_slist_append(hosts, GINT_TO_POINTER(addrlen));
hosts = g_slist_append(hosts, addr);
} else {
break;
}
}
} else if(rc==-1) {
char message[1024];
g_snprintf(message, sizeof(message), "Error reading from DNS child: %s",strerror(errno));
gaim_debug(GAIM_DEBUG_ERROR, "dns", "%s\n", message);
req->callback(NULL, req->data, message);
req_free(req);
return;
} else if(rc==0) {
char message[1024];
g_snprintf(message, sizeof(message), "EOF reading from DNS child");
close(req->fd_out);
gaim_debug(GAIM_DEBUG_ERROR, "dns", "%s\n", message);
req->callback(NULL, req->data, message);
req_free(req);
return;
}
/* wait4(req->dns_pid, NULL, WNOHANG, NULL); */
req->callback(hosts, req->data, NULL);
release_dns_child(req);
}
static void trap_gdb_bug()
{
const char *message =
"Gaim's DNS child got a SIGTRAP signal. \n"
"This can be caused by trying to run gaim inside gdb.\n"
"There is a known gdb bug which prevents this. Supposedly gaim\n"
"should have detected you were using gdb and used an ugly hack,\n"
"check cope_with_gdb_brokenness() in proxy.c.\n\n"
"For more info about this bug, see http://sources.redhat.com/ml/gdb/2001-07/msg00349.html\n";
fputs("\n* * *\n",stderr);
fputs(message,stderr);
fputs("* * *\n\n",stderr);
execlp("xmessage","xmessage","-center", message, NULL);
_exit(1);
}
static void cope_with_gdb_brokenness()
{
#ifdef __linux__
static gboolean already_done = FALSE;
char s[256], e[512];
int n;
pid_t ppid;
if(already_done)
return;
already_done = TRUE;
ppid = getppid();
snprintf(s, sizeof(s), "/proc/%d/exe", ppid);
n = readlink(s, e, sizeof(e));
if(n < 0)
return;
e[MIN(n,sizeof(e)-1)] = '\0';
if(strstr(e,"gdb")) {
gaim_debug(GAIM_DEBUG_INFO, "dns",
"Debugger detected, performing useless query...\n");
gethostbyname("x.x.x.x.x");
}
#endif
}
static void
gaim_dns_childthread(int child_out, int child_in, dns_params_t *dns_params, gboolean show_debug)
{
const size_t zero = 0;
int rc;
#if HAVE_GETADDRINFO
struct addrinfo hints, *res, *tmp;
char servname[20];
#else
struct sockaddr_in sin;
const size_t addrlen = sizeof(sin);
#endif
#ifdef HAVE_SIGNAL_H
signal(SIGHUP, SIG_DFL);
signal(SIGINT, SIG_DFL);
signal(SIGQUIT, SIG_DFL);
signal(SIGCHLD, SIG_DFL);
signal(SIGTERM, SIG_DFL);
signal(SIGTRAP, trap_gdb_bug);
#endif
while (1) {
if (dns_params->hostname[0] == '\0') {
const char Y = 'Y';
fd_set fds;
struct timeval tv = { .tv_sec = 40 , .tv_usec = 0 };
FD_ZERO(&fds);
FD_SET(child_in, &fds);
rc = select(child_in + 1, &fds, NULL, NULL, &tv);
if (!rc) {
if (show_debug)
fprintf(stderr,"dns[%d]: nobody needs me... =(\n", getpid());
break;
}
rc = read(child_in, dns_params, sizeof(dns_params_t));
if (rc < 0) {
perror("read()");
break;
}
if (rc==0) {
if (show_debug)
fprintf(stderr,"dns[%d]: Oops, father has gone, wait for me, wait...!\n", getpid());
_exit(0);
}
if (dns_params->hostname[0] == '\0') {
fprintf(stderr, "dns[%d]: hostname = \"\" (port = %d)!!!\n", getpid(), dns_params->port);
_exit(1);
}
write(child_out, &Y, 1);
}
#if HAVE_GETADDRINFO
g_snprintf(servname, sizeof(servname), "%d", dns_params->port);
memset(&hints,0,sizeof(hints));
/* This is only used to convert a service
* name to a port number. As we know we are
* passing a number already, we know this
* value will not be really used by the C
* library.
*/
hints.ai_socktype = SOCK_STREAM;
rc = getaddrinfo(dns_params->hostname, servname, &hints, &res);
write(child_out, &rc, sizeof(rc));
if (rc) {
close(child_out);
if (show_debug)
fprintf(stderr,"dns[%d] Error: getaddrinfo returned %d\n",
getpid(), rc);
dns_params->hostname[0] = '\0';
continue;
}
tmp = res;
while(res) {
size_t ai_addrlen = res->ai_addrlen;
write(child_out, &ai_addrlen, sizeof(ai_addrlen));
write(child_out, res->ai_addr, res->ai_addrlen);
res = res->ai_next;
}
freeaddrinfo(tmp);
write(child_out, &zero, sizeof(zero));
#else
if (!inet_aton(dns_params->hostname, &sin.sin_addr)) {
struct hostent *hp;
if (!(hp = gethostbyname(dns_params->hostname))) {
write(child_out, &h_errno, sizeof(int));
close(child_out);
if (show_debug)
fprintf(stderr,"DNS Error: %d\n", h_errno);
_exit(0);
}
memset(&sin, 0, sizeof(struct sockaddr_in));
memcpy(&sin.sin_addr.s_addr, hp->h_addr, hp->h_length);
sin.sin_family = hp->h_addrtype;
} else
sin.sin_family = AF_INET;
rc = 0;
write(child_out, &rc, sizeof(rc));
sin.sin_port = htons(dns_params->port);
write(child_out, &addrlen, sizeof(addrlen));
write(child_out, &sin, addrlen);
write(child_out, &zero, sizeof(zero));
#endif
dns_params->hostname[0] = '\0';
}
close(child_out);
close(child_in);
_exit(0);
}
int gaim_gethostbyname_async(const char *hostname, int port, dns_callback_t callback, gpointer data)
{
pending_dns_request_t *req = NULL;
dns_params_t dns_params;
gchar *host_temp;
host_temp = g_strstrip(g_strdup(hostname));
strncpy(dns_params.hostname, host_temp, sizeof(dns_params.hostname) - 1);
g_free(host_temp);
dns_params.hostname[sizeof(dns_params.hostname) - 1] = '\0';
dns_params.port = port;
/*
* If we have any children, attempt to have them perform the DNS
* query. If we're able to send the query to a child, then req
* will be set to the pending_dns_request_t. Otherwise, req will
* be NULL and we'll need to create a new DNS request child.
*/
while (free_dns_children != NULL) {
req = free_dns_children->data;
free_dns_children = g_slist_remove(free_dns_children, req);
if (send_dns_request_to_child(req, &dns_params) == 0)
/* We found an acceptable child, yay */
break;
req_free(req);
req = NULL;
}
/* We need to create a new DNS request child */
if (req == NULL) {
int child_out[2], child_in[2];
if (number_of_dns_children >= MAX_DNS_CHILDREN) {
queued_dns_request_t *r = g_new(queued_dns_request_t, 1);
memcpy(&(r->params), &dns_params, sizeof(dns_params));
r->callback = callback;
r->data = data;
if (!queued_requests)
queued_requests = g_queue_new();
g_queue_push_tail(queued_requests, r);
gaim_debug(GAIM_DEBUG_INFO, "dns",
"DNS query for '%s' queued\n", dns_params.hostname);
return 0;
}
/* Create pipes for communicating with the child process */
if (pipe(child_out) || pipe(child_in)) {
gaim_debug(GAIM_DEBUG_ERROR, "dns",
"Could not create pipes: %s\n", strerror(errno));
return -1;
}
req = g_new(pending_dns_request_t, 1);
cope_with_gdb_brokenness();
/* Fork! */
req->dns_pid = fork();
/* If we are the child process... */
if (req->dns_pid == 0) {
/* We should not access the parent's side of the pipe, so close them... */
close(child_out[0]);
close(child_in[1]);
gaim_dns_childthread(child_out[1], child_in[0], &dns_params, opt_debug);
/* The thread calls _exit() rather than returning, so we never get here */
}
/* We should not access the child's side of the pipe, so close them... */
close(child_out[1]);
close(child_in[0]);
if (req->dns_pid == -1) {
gaim_debug(GAIM_DEBUG_ERROR, "dns",
"Could not create child process for DNS: %s\n",
strerror(errno));
g_free(req);
return -1;
}
req->fd_out = child_out[0];
req->fd_in = child_in[1];
number_of_dns_children++;
gaim_debug(GAIM_DEBUG_INFO, "dns",
"Created new DNS child %d, there are now %d children.\n",
req->dns_pid, number_of_dns_children);
}
req->host = g_strdup(hostname);
req->port = port;
req->callback = callback;
req->data = data;
req->inpa = gaim_input_add(req->fd_out, GAIM_INPUT_READ, host_resolved, req);
return 0;
}
#elif defined _WIN32 /* end __unix__ */
/* Note: The below win32 implementation is actually platform independent.
Perhaps this can be used in place of the above platform dependent code.
*/
typedef struct _dns_tdata {
char *hostname;
int port;
dns_callback_t callback;
gpointer data;
GSList *hosts;
char *errmsg;
} dns_tdata;
static gboolean dns_main_thread_cb(gpointer data) {
dns_tdata *td = (dns_tdata*)data;
if (td->errmsg != NULL) {
gaim_debug_info("dns", "%s\n", td->errmsg);
}
td->callback(td->hosts, td->data, td->errmsg);
g_free(td->hostname);
g_free(td->errmsg);
g_free(td);
return FALSE;
}
static gpointer dns_thread(gpointer data) {
struct sockaddr_in sin;
dns_tdata *td = (dns_tdata*)data;
struct hostent *hp;
if ((hp = gethostbyname(td->hostname))) {
memset(&sin, 0, sizeof(struct sockaddr_in));
memcpy(&sin.sin_addr.s_addr, hp->h_addr, hp->h_length);
sin.sin_family = hp->h_addrtype;
sin.sin_port = htons(td->port);
td->hosts = g_slist_append(td->hosts,
GINT_TO_POINTER(sizeof(sin)));
td->hosts = g_slist_append(td->hosts,
g_memdup(&sin, sizeof(sin)));
} else {
td->errmsg = g_strdup_printf("DNS error: %d", errno);
}
/* back to main thread */
g_idle_add(dns_main_thread_cb, td);
return 0;
}
int gaim_gethostbyname_async(const char *hostname, int port,
dns_callback_t callback, gpointer data) {
dns_tdata *td;
struct sockaddr_in sin;
GError* err = NULL;
if(inet_aton(hostname, &sin.sin_addr)) {
GSList *hosts = NULL;
sin.sin_family = AF_INET;
sin.sin_port = htons(port);
hosts = g_slist_append(hosts, GINT_TO_POINTER(sizeof(sin)));
hosts = g_slist_append(hosts, g_memdup(&sin, sizeof(sin)));
callback(hosts, data, NULL);
return 0;
}
gaim_debug_info("dns", "DNS Lookup for: %s\n", hostname);
td = g_new0(dns_tdata, 1);
td->hostname = g_strdup(hostname);
td->port = port;
td->callback = callback;
td->data = data;
if(!g_thread_create(dns_thread, td, FALSE, &err)) {
gaim_debug_error("dns", "DNS thread create failure: %s\n", err?err->message:"");
g_error_free(err);
g_free(td->hostname);
g_free(td);
return -1;
}
return 0;
}
#else /* not __unix__ or _WIN32 */
typedef struct {
gpointer data;
size_t addrlen;
struct sockaddr *addr;
dns_callback_t callback;
} pending_dns_request_t;
static gboolean host_resolved(gpointer data)
{
pending_dns_request_t *req = (pending_dns_request_t*)data;
GSList *hosts = NULL;
hosts = g_slist_append(hosts, GINT_TO_POINTER(req->addrlen));
hosts = g_slist_append(hosts, req->addr);
req->callback(hosts, req->data, NULL);
g_free(req);
return FALSE;
}
int
gaim_gethostbyname_async(const char *hostname, int port,
dns_callback_t callback, gpointer data)
{
struct sockaddr_in sin;
pending_dns_request_t *req;
if (!inet_aton(hostname, &sin.sin_addr)) {
struct hostent *hp;
if(!(hp = gethostbyname(hostname))) {
gaim_debug(GAIM_DEBUG_ERROR, "dns",
"gaim_gethostbyname(\"%s\", %d) failed: %d\n",
hostname, port, h_errno);
return -1;
}
memset(&sin, 0, sizeof(struct sockaddr_in));
memcpy(&sin.sin_addr.s_addr, hp->h_addr, hp->h_length);
sin.sin_family = hp->h_addrtype;
} else
sin.sin_family = AF_INET;
sin.sin_port = htons(port);
req = g_new(pending_dns_request_t, 1);
req->addr = (struct sockaddr*) g_memdup(&sin, sizeof(sin));
req->addrlen = sizeof(sin);
req->data = data;
req->callback = callback;
gaim_timeout_add(10, host_resolved, req);
return 0;
}
#endif /* not __unix__ or _WIN32 */
static void
no_one_calls(gpointer data, gint source, GaimInputCondition cond)
{
struct PHB *phb = data;
unsigned int len;
int error=0, ret;
gaim_debug(GAIM_DEBUG_INFO, "proxy", "Connected.\n");
len = sizeof(error);
/*
* getsockopt after a non-blocking connect returns -1 if something is
* really messed up (bad descriptor, usually). Otherwise, it returns 0 and
* error holds what connect would have returned if it blocked until now.
* Thus, error == 0 is success, error == EINPROGRESS means "try again",
* and anything else is a real error.
*
* (error == EINPROGRESS can happen after a select because the kernel can
* be overly optimistic sometimes. select is just a hint that you might be
* able to do something.)
*/
ret = getsockopt(source, SOL_SOCKET, SO_ERROR, &error, &len);
if (ret == 0 && error == EINPROGRESS)
return; /* we'll be called again later */
if (ret < 0 || error != 0) {
if(ret!=0) error = errno;
close(source);
gaim_input_remove(phb->inpa);
gaim_debug(GAIM_DEBUG_ERROR, "proxy",
"getsockopt SO_ERROR check: %s\n", strerror(error));
try_connect(phb);
return;
}
fcntl(source, F_SETFL, 0);
gaim_input_remove(phb->inpa);
if (phb->account == NULL ||
gaim_account_get_connection(phb->account) != NULL) {
phb->func(phb->data, source, GAIM_INPUT_READ);
}
g_free(phb->host);
g_free(phb);
}
static gboolean clean_connect(gpointer data)
{
struct PHB *phb = data;
if (phb->account == NULL ||
gaim_account_get_connection(phb->account) != NULL) {
phb->func(phb->data, phb->port, GAIM_INPUT_READ);
}
g_free(phb->host);
g_free(phb);
return FALSE;
}
static int
proxy_connect_none(struct PHB *phb, struct sockaddr *addr, socklen_t addrlen)
{
int fd = -1;
gaim_debug(GAIM_DEBUG_INFO, "proxy",
"Connecting to %s:%d with no proxy\n", phb->host, phb->port);
if ((fd = socket(addr->sa_family, SOCK_STREAM, 0)) < 0) {
gaim_debug(GAIM_DEBUG_ERROR, "proxy",
"Unable to create socket: %s\n", strerror(errno));
return -1;
}
fcntl(fd, F_SETFL, O_NONBLOCK);
#ifndef _WIN32
fcntl(fd, F_SETFD, FD_CLOEXEC);
#endif
if (connect(fd, (struct sockaddr *)addr, addrlen) < 0) {
if ((errno == EINPROGRESS) || (errno == EINTR)) {
gaim_debug(GAIM_DEBUG_WARNING, "proxy",
"Connect would have blocked.\n");
phb->inpa = gaim_input_add(fd, GAIM_INPUT_WRITE, no_one_calls, phb);
}
else {
gaim_debug(GAIM_DEBUG_ERROR, "proxy",
"Connect failed: %s\n", strerror(errno));
close(fd);
return -1;
}
}
else {
unsigned int len;
int error = ETIMEDOUT;
gaim_debug(GAIM_DEBUG_MISC, "proxy", "Connect didn't block.\n");
len = sizeof(error);
if (getsockopt(fd, SOL_SOCKET, SO_ERROR, &error, &len) < 0) {
gaim_debug(GAIM_DEBUG_ERROR, "proxy", "getsockopt failed.\n");
close(fd);
return -1;
}
fcntl(fd, F_SETFL, 0);
phb->port = fd; /* bleh */
gaim_timeout_add(50, clean_connect, phb); /* we do this because we never
want to call our callback
before we return. */
}
return fd;
}
#define HTTP_GOODSTRING "HTTP/1.0 200"
#define HTTP_GOODSTRING2 "HTTP/1.1 200"
static void
http_complete(struct PHB *phb, gint source)
{
gaim_debug(GAIM_DEBUG_INFO, "http proxy", "proxy connection established\n");
if(source < 0) {
try_connect(phb);
} else if(!phb->account || phb->account->gc) {
phb->func(phb->data, source, GAIM_INPUT_READ);
g_free(phb->host);
g_free(phb);
}
}
/* read the response to the CONNECT request, if we are requesting a non-port-80 tunnel */
static void
http_canread(gpointer data, gint source, GaimInputCondition cond)
{
int nlc = 0;
int pos = 0;
int minor, major, status, error=0;
struct PHB *phb = data;
char inputline[8192], *p;
gaim_input_remove(phb->inpa);
while ((pos < sizeof(inputline)-1) && (nlc != 2) && (read(source, &inputline[pos++], 1) == 1)) {
if (inputline[pos - 1] == '\n')
nlc++;
else if (inputline[pos - 1] != '\r')
nlc = 0;
}
inputline[pos] = '\0';
error = strncmp(inputline, "HTTP/", 5) != 0;
if(!error) {
p = inputline + 5;
major = strtol(p, &p, 10);
error = (major==0) || (*p != '.');
if(!error) {
p++;
minor = strtol(p, &p, 10);
error = (*p!=' ');
if(!error) {
p++;
status = strtol(p, &p, 10);
error = (*p!=' ');
}
}
}
if(error) {
gaim_debug(GAIM_DEBUG_ERROR, "proxy",
"Unable to parse proxy's response: %s\n", inputline);
close(source);
source=-1;
}
else if(status!=200) {
gaim_debug(GAIM_DEBUG_ERROR, "proxy",
"Proxy server replied with:\n%s\n", p);
close(source);
source = -1;
/* XXX: why in the hell are we calling gaim_connection_error() here? */
if ( status == 403 /* Forbidden */ ) {
gchar *msg = g_strdup_printf(_("Access denied: proxy server forbids port %d tunnelling."), phb->port);
gaim_connection_error(phb->account->gc, msg);
g_free(msg);
} else {
char *msg = g_strdup_printf(_("Proxy connection error %d"), status);
gaim_connection_error(phb->account->gc, msg);
g_free(msg);
}
} else {
http_complete(phb, source);
}
return;
}
static void
http_canwrite(gpointer data, gint source, GaimInputCondition cond)
{
char request[8192];
int request_len = 0;
struct PHB *phb = data;
unsigned int len;
int error = ETIMEDOUT;
gaim_debug(GAIM_DEBUG_INFO, "http proxy", "Connected.\n");
if (phb->inpa > 0)
gaim_input_remove(phb->inpa);
len = sizeof(error);
if (getsockopt(source, SOL_SOCKET, SO_ERROR, &error, &len) < 0) {
close(source);
try_connect(phb);
return;
}
gaim_debug(GAIM_DEBUG_INFO, "proxy", "using CONNECT tunnelling for %s:%d\n", phb->host, phb->port);
request_len = g_snprintf(request, sizeof(request),
"CONNECT %s:%d HTTP/1.1\r\nHost: %s:%d\r\n",
phb->host, phb->port, phb->host, phb->port);
if (gaim_proxy_info_get_username(phb->gpi) != NULL) {
char *t1, *t2;
t1 = g_strdup_printf("%s:%s",
gaim_proxy_info_get_username(phb->gpi),
gaim_proxy_info_get_password(phb->gpi) ?
gaim_proxy_info_get_password(phb->gpi) : "");
t2 = gaim_base64_encode(t1, strlen(t1));
g_free(t1);
g_return_if_fail(request_len < sizeof(request));
request_len += g_snprintf(request + request_len,
sizeof(request) - request_len,
"Proxy-Authorization: Basic %s\r\n", t2);
g_free(t2);
}
g_return_if_fail(request_len < sizeof(request));
strcpy(request + request_len, "\r\n");
request_len += 2;
if (write(source, request, request_len) < 0) {
close(source);
try_connect(phb);
return;
}
/* register the response handler for the CONNECT request */
phb->inpa = gaim_input_add(source, GAIM_INPUT_READ, http_canread, phb);
}
static int
proxy_connect_http(struct PHB *phb, struct sockaddr *addr, socklen_t addrlen)
{
int fd = -1;
gaim_debug(GAIM_DEBUG_INFO, "http proxy",
"Connecting to %s:%d via %s:%d using HTTP\n",
phb->host, phb->port,
gaim_proxy_info_get_host(phb->gpi),
gaim_proxy_info_get_port(phb->gpi));
if ((fd = socket(addr->sa_family, SOCK_STREAM, 0)) < 0) {
return -1;
}
fcntl(fd, F_SETFL, O_NONBLOCK);
#ifndef _WIN32
fcntl(fd, F_SETFD, FD_CLOEXEC);
#endif
if (connect(fd, addr, addrlen) < 0) {
if ((errno == EINPROGRESS) || (errno == EINTR)) {
gaim_debug(GAIM_DEBUG_WARNING, "http proxy",
"Connect would have blocked.\n");
if (phb->port != 80) {
/* we need to do CONNECT first */
phb->inpa = gaim_input_add(fd, GAIM_INPUT_WRITE,
http_canwrite, phb);
} else {
http_complete(phb, fd);
}
} else {
close(fd);
return -1;
}
}
else {
unsigned int len;
int error = ETIMEDOUT;
gaim_debug(GAIM_DEBUG_MISC, "http proxy",
"Connect didn't block.\n");
len = sizeof(error);
if (getsockopt(fd, SOL_SOCKET, SO_ERROR, &error, &len) < 0) {
close(fd);
return -1;
}
fcntl(fd, F_SETFL, 0);
http_canwrite(phb, fd, GAIM_INPUT_WRITE);
}
return fd;
}
static void
s4_canread(gpointer data, gint source, GaimInputCondition cond)
{
unsigned char packet[12];
struct PHB *phb = data;
gaim_input_remove(phb->inpa);
memset(packet, 0, sizeof(packet));
if (read(source, packet, 9) >= 4 && packet[1] == 90) {
if (phb->account == NULL ||
gaim_account_get_connection(phb->account) != NULL) {
phb->func(phb->data, source, GAIM_INPUT_READ);
}
g_free(phb->host);
g_free(phb);
return;
}
close(source);
try_connect(phb);
}
static void
s4_canwrite(gpointer data, gint source, GaimInputCondition cond)
{
unsigned char packet[12];
struct hostent *hp;
struct PHB *phb = data;
unsigned int len;
int error = ETIMEDOUT;
gaim_debug(GAIM_DEBUG_INFO, "s4 proxy", "Connected.\n");
if (phb->inpa > 0)
gaim_input_remove(phb->inpa);
len = sizeof(error);
if (getsockopt(source, SOL_SOCKET, SO_ERROR, &error, &len) < 0) {
close(source);
try_connect(phb);
return;
}
fcntl(source, F_SETFL, 0);
/*
* The socks4 spec doesn't include support for doing host name
* lookups by the proxy. Some socks4 servers do this via
* extensions to the protocol. Since we don't know if a
* server supports this, it would need to be implemented
* with an option, or some detection mechanism - in the
* meantime, stick with plain old SOCKS4.
*/
if (!(hp = gethostbyname(phb->host))) {
close(source);
try_connect(phb);
return;
}
packet[0] = 4;
packet[1] = 1;
packet[2] = phb->port >> 8;
packet[3] = phb->port & 0xff;
packet[4] = (unsigned char)(hp->h_addr_list[0])[0];
packet[5] = (unsigned char)(hp->h_addr_list[0])[1];
packet[6] = (unsigned char)(hp->h_addr_list[0])[2];
packet[7] = (unsigned char)(hp->h_addr_list[0])[3];
packet[8] = 0;
if (write(source, packet, 9) != 9) {
close(source);
try_connect(phb);
return;
}
phb->inpa = gaim_input_add(source, GAIM_INPUT_READ, s4_canread, phb);
}
static int
proxy_connect_socks4(struct PHB *phb, struct sockaddr *addr, socklen_t addrlen)
{
int fd = -1;
gaim_debug(GAIM_DEBUG_INFO, "socks4 proxy",
"Connecting to %s:%d via %s:%d using SOCKS4\n",
phb->host, phb->port,
gaim_proxy_info_get_host(phb->gpi),
gaim_proxy_info_get_port(phb->gpi));
if ((fd = socket(addr->sa_family, SOCK_STREAM, 0)) < 0)
return -1;
fcntl(fd, F_SETFL, O_NONBLOCK);
#ifndef _WIN32
fcntl(fd, F_SETFD, FD_CLOEXEC);
#endif
if (connect(fd, addr, addrlen) < 0) {
if ((errno == EINPROGRESS) || (errno == EINTR)) {
gaim_debug(GAIM_DEBUG_WARNING, "socks4 proxy",
"Connect would have blocked.\n");
phb->inpa = gaim_input_add(fd, GAIM_INPUT_WRITE, s4_canwrite, phb);
}
else {
close(fd);
return -1;
}
} else {
unsigned int len;
int error = ETIMEDOUT;
gaim_debug(GAIM_DEBUG_MISC, "socks4 proxy",
"Connect didn't block.\n");
len = sizeof(error);
if (getsockopt(fd, SOL_SOCKET, SO_ERROR, &error, &len) < 0) {
close(fd);
return -1;
}
fcntl(fd, F_SETFL, 0);
s4_canwrite(phb, fd, GAIM_INPUT_WRITE);
}
return fd;
}
static void
s5_canread_again(gpointer data, gint source, GaimInputCondition cond)
{
unsigned char buf[512];
struct PHB *phb = data;
gaim_input_remove(phb->inpa);
gaim_debug(GAIM_DEBUG_INFO, "socks5 proxy", "Able to read again.\n");
if (read(source, buf, 4) < 4) {
gaim_debug(GAIM_DEBUG_WARNING, "socks5 proxy", "or not...\n");
close(source);
try_connect(phb);
return;
}
if ((buf[0] != 0x05) || (buf[1] != 0x00)) {
if ((buf[0] == 0x05) && (buf[1] < 0x09))
gaim_debug(GAIM_DEBUG_ERROR, "socks5 proxy", socks5errors[buf[1]]);
else
gaim_debug(GAIM_DEBUG_ERROR, "socks5 proxy", "Bad data.\n");
close(source);
try_connect(phb);
return;
}
/* Skip past BND.ADDR */
switch(buf[3]) {
case 0x01: /* the address is a version-4 IP address, with a length of 4 octets */
read(source, buf, 4);
break;
case 0x03: /* the address field contains a fully-qualified domain name. The first
octet of the address field contains the number of octets of name that
follow, there is no terminating NUL octet. */
read(source, buf, 1);
read(source, buf, buf[0]);
break;
case 0x04: /* the address is a version-6 IP address, with a length of 16 octets */
read(source, buf, 16);
break;
}
/* Skip past BND.PORT */
read(source, buf, 2);
if (phb->account == NULL ||
gaim_account_get_connection(phb->account) != NULL) {
phb->func(phb->data, source, GAIM_INPUT_READ);
}
g_free(phb->host);
g_free(phb);
}
static void
s5_sendconnect(gpointer data, gint source)
{
unsigned char buf[512];
struct PHB *phb = data;
int hlen = strlen(phb->host);
buf[0] = 0x05;
buf[1] = 0x01; /* CONNECT */
buf[2] = 0x00; /* reserved */
buf[3] = 0x03; /* address type -- host name */
buf[4] = hlen;
memcpy(buf + 5, phb->host, hlen);
buf[5 + hlen] = phb->port >> 8;
buf[5 + hlen + 1] = phb->port & 0xff;
if (write(source, buf, (5 + hlen + 2)) < (5 + hlen + 2)) {
close(source);
try_connect(phb);
return;
}
phb->inpa = gaim_input_add(source, GAIM_INPUT_READ, s5_canread_again, phb);
}
static void
s5_readauth(gpointer data, gint source, GaimInputCondition cond)
{
unsigned char buf[512];
struct PHB *phb = data;
gaim_input_remove(phb->inpa);
gaim_debug(GAIM_DEBUG_INFO, "socks5 proxy", "Got auth response.\n");
if (read(source, buf, 2) < 2) {
close(source);
try_connect(phb);
return;
}
if ((buf[0] != 0x01) || (buf[1] != 0x00)) {
close(source);
try_connect(phb);
return;
}
s5_sendconnect(phb, source);
}
static void hmacmd5_chap(const unsigned char * challenge, int challen, const char * passwd, unsigned char * response)
{
int i;
unsigned char Kxoripad[65];
unsigned char Kxoropad[65];
md5_state_t ctx;
int pwlen;
char * pwinput;
char md5buf[16];
pwinput=(char *)passwd;
pwlen=strlen(passwd);
if (pwlen>64) {
md5_init(&ctx);
md5_append(&ctx, (unsigned char *)passwd, strlen(passwd));
md5_finish(&ctx, (unsigned char *)md5buf);
pwinput=(char *)md5buf;
pwlen=16;
}
memset(Kxoripad,0,sizeof(Kxoripad));
memset(Kxoropad,0,sizeof(Kxoropad));
memcpy(Kxoripad,pwinput,pwlen);
memcpy(Kxoropad,pwinput,pwlen);
for (i=0;i<64;i++) {
Kxoripad[i]^=0x36;
Kxoropad[i]^=0x5c;
}
md5_init(&ctx);
md5_append(&ctx, Kxoripad, 64);
md5_append(&ctx, challenge, challen);
md5_finish(&ctx, (unsigned char *)Kxoripad);
md5_init(&ctx);
md5_append(&ctx, Kxoropad, 64);
md5_append(&ctx, Kxoripad, 16);
md5_finish(&ctx, response);
}
static void
s5_readchap(gpointer data, gint source, GaimInputCondition cond)
{
unsigned char buf[260];
unsigned char cmdbuf[20];
struct PHB *phb = data;
int navas, currentav;
gaim_input_remove(phb->inpa);
gaim_debug(GAIM_DEBUG_INFO, "socks5 proxy", "Got CHAP response.\n");
if (read(source, cmdbuf, 2) < 2) {
close(source);
try_connect(phb);
return;
}
if (cmdbuf[0] != 0x01) {
close(source);
try_connect(phb);
return;
}
navas = cmdbuf[1];
for (currentav = 0; currentav < navas; currentav++) {
if (read(source, cmdbuf, 2) < 2) {
close(source);
try_connect(phb);
return;
}
if (read(source, buf, cmdbuf[1]) < cmdbuf[1]) {
close(source);
try_connect(phb);
return;
}
switch (cmdbuf[0]) {
case 0x00:
/* Did auth work? */
if (buf[0] == 0x00) {
/* Success */
s5_sendconnect(phb, source);
return;
} else {
/* Failure */
gaim_debug_warning("proxy", "socks5 CHAP authentication "
"failed. Disconnecting...");
close(source);
try_connect(phb);
return;
}
break;
case 0x03:
/* Server wants our credentials */
hmacmd5_chap(buf, cmdbuf[1],
gaim_proxy_info_get_password(phb->gpi),
buf + 4);
buf[0] = 0x01;
buf[1] = 0x01;
buf[2] = 0x04;
buf[3] = 0x10;
if (write(source, buf, 20) < 20) {
close(source);
try_connect(phb);
return;
}
break;
case 0x11:
/* Server wants to select an algorithm */
if (buf[0] != 0x85) {
/* Only currently support HMAC-MD5 */
gaim_debug_warning("proxy", "Server tried to select an "
"algorithm that we did not advertise "
"as supporting. This is a violation "
"of the socks5 CHAP specification. "
"Disconnecting...");
close(source);
try_connect(phb);
return;
}
break;
}
}
/* Fell through. We ran out of CHAP events to process, but haven't
* succeeded or failed authentication - there may be more to come.
* If this is the case, come straight back here. */
phb->inpa = gaim_input_add(source, GAIM_INPUT_READ, s5_readchap, phb);
}
static void
s5_canread(gpointer data, gint source, GaimInputCondition cond)
{
unsigned char buf[512];
struct PHB *phb = data;
gaim_input_remove(phb->inpa);
gaim_debug(GAIM_DEBUG_INFO, "socks5 proxy", "Able to read.\n");
if (read(source, buf, 2) < 2) {
close(source);
try_connect(phb);
return;
}
if ((buf[0] != 0x05) || (buf[1] == 0xff)) {
close(source);
try_connect(phb);
return;
}
if (buf[1] == 0x02) {
unsigned int i, j;
const char *u, *p;
u = gaim_proxy_info_get_username(phb->gpi);
p = gaim_proxy_info_get_password(phb->gpi);
i = (u == NULL) ? 0 : strlen(u);
j = (p == NULL) ? 0 : strlen(p);
buf[0] = 0x01; /* version 1 */
buf[1] = i;
if (u != NULL)
memcpy(buf + 2, u, i);
buf[2 + i] = j;
if (p != NULL)
memcpy(buf + 2 + i + 1, p, j);
if (write(source, buf, 3 + i + j) < 3 + i + j) {
close(source);
try_connect(phb);
return;
}
phb->inpa = gaim_input_add(source, GAIM_INPUT_READ, s5_readauth, phb);
} else if (buf[1] == 0x03) {
unsigned int userlen;
userlen = strlen(gaim_proxy_info_get_username(phb->gpi));
buf[0] = 0x01;
buf[1] = 0x02;
buf[2] = 0x11;
buf[3] = 0x01;
buf[4] = 0x85;
buf[5] = 0x02;
buf[6] = userlen;
memcpy(buf + 7, gaim_proxy_info_get_username(phb->gpi), userlen);
if (write(source, buf, 7 + userlen) < 7 + userlen) {
close(source);
try_connect(phb);
return;
}
phb->inpa = gaim_input_add(source, GAIM_INPUT_READ, s5_readchap, phb);
}
else {
s5_sendconnect(phb, source);
}
}
static void
s5_canwrite(gpointer data, gint source, GaimInputCondition cond)
{
unsigned char buf[512];
int i;
struct PHB *phb = data;
unsigned int len;
int error = ETIMEDOUT;
gaim_debug(GAIM_DEBUG_INFO, "socks5 proxy", "Connected.\n");
if (phb->inpa > 0)
gaim_input_remove(phb->inpa);
len = sizeof(error);
if (getsockopt(source, SOL_SOCKET, SO_ERROR, &error, &len) < 0) {
close(source);
try_connect(phb);
return;
}
fcntl(source, F_SETFL, 0);
i = 0;
buf[0] = 0x05; /* SOCKS version 5 */
if (gaim_proxy_info_get_username(phb->gpi) != NULL) {
buf[1] = 0x03; /* three methods */
buf[2] = 0x00; /* no authentication */
buf[3] = 0x03; /* CHAP authentication */
buf[4] = 0x02; /* username/password authentication */
i = 5;
}
else {
buf[1] = 0x01;
buf[2] = 0x00;
i = 3;
}
if (write(source, buf, i) < i) {
gaim_debug(GAIM_DEBUG_ERROR, "socks5 proxy", "Unable to write\n");
close(source);
try_connect(phb);
return;
}
phb->inpa = gaim_input_add(source, GAIM_INPUT_READ, s5_canread, phb);
}
static int
proxy_connect_socks5(struct PHB *phb, struct sockaddr *addr, socklen_t addrlen)
{
int fd = -1;
gaim_debug(GAIM_DEBUG_INFO, "socks5 proxy",
"Connecting to %s:%d via %s:%d using SOCKS5\n",
phb->host, phb->port,
gaim_proxy_info_get_host(phb->gpi),
gaim_proxy_info_get_port(phb->gpi));
if ((fd = socket(addr->sa_family, SOCK_STREAM, 0)) < 0)
return -1;
fcntl(fd, F_SETFL, O_NONBLOCK);
#ifndef _WIN32
fcntl(fd, F_SETFD, FD_CLOEXEC);
#endif
if (connect(fd, addr, addrlen) < 0) {
if ((errno == EINPROGRESS) || (errno == EINTR)) {
gaim_debug(GAIM_DEBUG_WARNING, "socks5 proxy",
"Connect would have blocked.\n");
phb->inpa = gaim_input_add(fd, GAIM_INPUT_WRITE, s5_canwrite, phb);
}
else {
close(fd);
return -1;
}
}
else {
unsigned int len;
int error = ETIMEDOUT;
gaim_debug(GAIM_DEBUG_MISC, "socks5 proxy",
"Connect didn't block.\n");
len = sizeof(error);
if (getsockopt(fd, SOL_SOCKET, SO_ERROR, &error, &len) < 0) {
close(fd);
return -1;
}
fcntl(fd, F_SETFL, 0);
s5_canwrite(phb, fd, GAIM_INPUT_WRITE);
}
return fd;
}
static void try_connect(struct PHB *phb)
{
size_t addrlen;
struct sockaddr *addr;
int ret = -1;
while (phb->hosts) {
addrlen = GPOINTER_TO_INT(phb->hosts->data);
phb->hosts = g_slist_remove(phb->hosts, phb->hosts->data);
addr = phb->hosts->data;
phb->hosts = g_slist_remove(phb->hosts, phb->hosts->data);
switch (gaim_proxy_info_get_type(phb->gpi)) {
case GAIM_PROXY_NONE:
ret = proxy_connect_none(phb, addr, addrlen);
break;
case GAIM_PROXY_HTTP:
ret = proxy_connect_http(phb, addr, addrlen);
break;
case GAIM_PROXY_SOCKS4:
ret = proxy_connect_socks4(phb, addr, addrlen);
break;
case GAIM_PROXY_SOCKS5:
ret = proxy_connect_socks5(phb, addr, addrlen);
break;
case GAIM_PROXY_USE_ENVVAR:
ret = proxy_connect_http(phb, addr, addrlen);
break;
default:
break;
}
g_free(addr);
if (ret > 0)
break;
}
if (ret < 0) {
if (phb->account == NULL ||
gaim_account_get_connection(phb->account) != NULL) {
phb->func(phb->data, -1, GAIM_INPUT_READ);
}
g_free(phb->host);
g_free(phb);
}
}
static void
connection_host_resolved(GSList *hosts, gpointer data,
const char *error_message)
{
struct PHB *phb = (struct PHB*)data;
phb->hosts = hosts;
try_connect(phb);
}
int
gaim_proxy_connect(GaimAccount *account, const char *host, int port,
GaimInputFunction func, gpointer data)
{
const char *connecthost = host;
int connectport = port;
struct PHB *phb;
const gchar *tmp;
g_return_val_if_fail(host != NULL, -1);
g_return_val_if_fail(port != 0 && port != -1, -1);
g_return_val_if_fail(func != NULL, -1);
phb = g_new0(struct PHB, 1);
if (account == NULL || gaim_account_get_proxy_info(account) == NULL)
phb->gpi = gaim_global_proxy_get_info();
else
phb->gpi = gaim_account_get_proxy_info(account);
phb->func = func;
phb->data = data;
phb->host = g_strdup(host);
phb->port = port;
phb->account = account;
if (gaim_proxy_info_get_type(phb->gpi) == GAIM_PROXY_USE_ENVVAR) {
if ((tmp = g_getenv("HTTP_PROXY")) != NULL ||
(tmp = g_getenv("http_proxy")) != NULL ||
(tmp = g_getenv("HTTPPROXY")) != NULL) {
char *proxyhost,*proxypath,*proxyuser,*proxypasswd;
int proxyport;
/* http_proxy-format:
* export http_proxy="http://user:passwd@your.proxy.server:port/"
*/
if(gaim_url_parse(tmp, &proxyhost, &proxyport, &proxypath, &proxyuser, &proxypasswd)) {
gaim_proxy_info_set_host(phb->gpi, proxyhost);
g_free(proxyhost);
g_free(proxypath);
if (proxyuser != NULL) {
gaim_proxy_info_set_username(phb->gpi, proxyuser);
g_free(proxyuser);
}
if (proxypasswd != NULL) {
gaim_proxy_info_set_password(phb->gpi, proxypasswd);
g_free(proxypasswd);
}
/* only for backward compatibility */
if (proxyport == 80 &&
((tmp = g_getenv("HTTP_PROXY_PORT")) != NULL ||
(tmp = g_getenv("http_proxy_port")) != NULL ||
(tmp = g_getenv("HTTPPROXYPORT")) != NULL))
proxyport = atoi(tmp);
gaim_proxy_info_set_port(phb->gpi, proxyport);
}
} else {
/* no proxy environment variable found, don't use a proxy */
gaim_debug_info("proxy", "No environment settings found, not using a proxy\n");
gaim_proxy_info_set_type(phb->gpi, GAIM_PROXY_NONE);
}
/* XXX: Do we want to skip this step if user/password were part of url? */
if ((tmp = g_getenv("HTTP_PROXY_USER")) != NULL ||
(tmp = g_getenv("http_proxy_user")) != NULL ||
(tmp = g_getenv("HTTPPROXYUSER")) != NULL)
gaim_proxy_info_set_username(phb->gpi, tmp);
if ((tmp = g_getenv("HTTP_PROXY_PASS")) != NULL ||
(tmp = g_getenv("http_proxy_pass")) != NULL ||
(tmp = g_getenv("HTTPPROXYPASS")) != NULL)
gaim_proxy_info_set_password(phb->gpi, tmp);
}
if ((gaim_proxy_info_get_type(phb->gpi) != GAIM_PROXY_NONE) &&
(gaim_proxy_info_get_host(phb->gpi) == NULL ||
gaim_proxy_info_get_port(phb->gpi) <= 0)) {
gaim_notify_error(NULL, NULL, _("Invalid proxy settings"), _("Either the host name or port number specified for your given proxy type is invalid."));
g_free(phb->host);
g_free(phb);
return -1;
}
switch (gaim_proxy_info_get_type(phb->gpi))
{
case GAIM_PROXY_NONE:
break;
case GAIM_PROXY_HTTP:
case GAIM_PROXY_SOCKS4:
case GAIM_PROXY_SOCKS5:
case GAIM_PROXY_USE_ENVVAR:
connecthost = gaim_proxy_info_get_host(phb->gpi);
connectport = gaim_proxy_info_get_port(phb->gpi);
break;
default:
g_free(phb->host);
g_free(phb);
return -1;
}
return gaim_gethostbyname_async(connecthost, connectport,
connection_host_resolved, phb);
}
int
gaim_proxy_connect_socks5(GaimProxyInfo *gpi, const char *host, int port,
GaimInputFunction func, gpointer data)
{
struct PHB *phb;
phb = g_new0(struct PHB, 1);
phb->gpi = gpi;
phb->func = func;
phb->data = data;
phb->host = g_strdup(host);
phb->port = port;
return gaim_gethostbyname_async(gaim_proxy_info_get_host(gpi), gaim_proxy_info_get_port(gpi),
connection_host_resolved, phb);
}
static void
proxy_pref_cb(const char *name, GaimPrefType type, gpointer value,
gpointer data)
{
GaimProxyInfo *info = gaim_global_proxy_get_info();
if (!strcmp(name, "/core/proxy/type")) {
int proxytype;
char *type = value;
if (!strcmp(type, "none"))
proxytype = GAIM_PROXY_NONE;
else if (!strcmp(type, "http"))
proxytype = GAIM_PROXY_HTTP;
else if (!strcmp(type, "socks4"))
proxytype = GAIM_PROXY_SOCKS4;
else if (!strcmp(type, "socks5"))
proxytype = GAIM_PROXY_SOCKS5;
else if (!strcmp(type, "envvar"))
proxytype = GAIM_PROXY_USE_ENVVAR;
else
proxytype = -1;
gaim_proxy_info_set_type(info, proxytype);
} else if (!strcmp(name, "/core/proxy/host"))
gaim_proxy_info_set_host(info, value);
else if (!strcmp(name, "/core/proxy/port"))
gaim_proxy_info_set_port(info, GPOINTER_TO_INT(value));
else if (!strcmp(name, "/core/proxy/username"))
gaim_proxy_info_set_username(info, value);
else if (!strcmp(name, "/core/proxy/password"))
gaim_proxy_info_set_password(info, value);
}
void
gaim_proxy_init(void)
{
/* Initialize a default proxy info struct. */
global_proxy_info = gaim_proxy_info_new();
/* Proxy */
gaim_prefs_add_none("/core/proxy");
gaim_prefs_add_string("/core/proxy/type", "none");
gaim_prefs_add_string("/core/proxy/host", "");
gaim_prefs_add_int("/core/proxy/port", 0);
gaim_prefs_add_string("/core/proxy/username", "");
gaim_prefs_add_string("/core/proxy/password", "");
/* Setup callbacks for the preferences. */
gaim_prefs_connect_callback("/core/proxy/type",
proxy_pref_cb, NULL);
gaim_prefs_connect_callback("/core/proxy/host",
proxy_pref_cb, NULL);
gaim_prefs_connect_callback("/core/proxy/port",
proxy_pref_cb, NULL);
gaim_prefs_connect_callback("/core/proxy/username",
proxy_pref_cb, NULL);
gaim_prefs_connect_callback("/core/proxy/password",
proxy_pref_cb, NULL);
#ifdef _WIN32
if(!g_thread_supported())
g_thread_init(NULL);
#endif
}