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http: Handle proxy authentication
Tested with both Basic and Digest authentication, and tested with both proxy authentication and authentication for the requested resource at the same time. Signed-off-by: Martin Storsjö <martin@martin.st>
This commit is contained in:
Martin Storsjö
parent
b01f5ba207
commit
b911518d1c
@ -47,6 +47,7 @@ typedef struct {
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int64_t off, filesize;
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char location[MAX_URL_SIZE];
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HTTPAuthState auth_state;
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HTTPAuthState proxy_auth_state;
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char *headers;
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int willclose; /**< Set if the server correctly handles Connection: close and will close the connection after feeding us the content. */
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int chunked_post;
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@ -71,25 +72,29 @@ static const AVClass flavor ## _context_class = {\
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HTTP_CLASS(http);
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HTTP_CLASS(https);
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static int http_connect(URLContext *h, const char *path, const char *hoststr,
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const char *auth, int *new_location);
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static int http_connect(URLContext *h, const char *path, const char *local_path,
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const char *hoststr, const char *auth,
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const char *proxyauth, int *new_location);
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void ff_http_init_auth_state(URLContext *dest, const URLContext *src)
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{
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memcpy(&((HTTPContext*)dest->priv_data)->auth_state,
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&((HTTPContext*)src->priv_data)->auth_state, sizeof(HTTPAuthState));
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memcpy(&((HTTPContext*)dest->priv_data)->proxy_auth_state,
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&((HTTPContext*)src->priv_data)->proxy_auth_state,
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sizeof(HTTPAuthState));
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}
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/* return non zero if error */
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static int http_open_cnx(URLContext *h)
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{
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const char *path, *proxy_path, *lower_proto = "tcp";
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const char *path, *proxy_path, *lower_proto = "tcp", *local_path;
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char hostname[1024], hoststr[1024], proto[10];
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char auth[1024];
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char auth[1024], proxyauth[1024];
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char path1[1024];
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char buf[1024];
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char buf[1024], urlbuf[1024];
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int port, use_proxy, err, location_changed = 0, redirects = 0;
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HTTPAuthType cur_auth_type;
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HTTPAuthType cur_auth_type, cur_proxy_auth_type;
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HTTPContext *s = h->priv_data;
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URLContext *hd = NULL;
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@ -105,15 +110,19 @@ static int http_open_cnx(URLContext *h)
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path1, sizeof(path1), s->location);
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ff_url_join(hoststr, sizeof(hoststr), NULL, NULL, hostname, port, NULL);
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if (use_proxy) {
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av_url_split(NULL, 0, auth, sizeof(auth), hostname, sizeof(hostname), &port,
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NULL, 0, proxy_path);
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path = s->location;
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} else {
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if (path1[0] == '\0')
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path = "/";
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else
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path = path1;
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local_path = path;
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if (use_proxy) {
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/* Reassemble the request URL without auth string - we don't
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* want to leak the auth to the proxy. */
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ff_url_join(urlbuf, sizeof(urlbuf), proto, NULL, hostname, port, "%s",
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path1);
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path = urlbuf;
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av_url_split(NULL, 0, proxyauth, sizeof(proxyauth),
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hostname, sizeof(hostname), &port, NULL, 0, proxy_path);
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}
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if (!strcmp(proto, "https")) {
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lower_proto = "tls";
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@ -130,7 +139,8 @@ static int http_open_cnx(URLContext *h)
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s->hd = hd;
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cur_auth_type = s->auth_state.auth_type;
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if (http_connect(h, path, hoststr, auth, &location_changed) < 0)
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cur_proxy_auth_type = s->auth_state.auth_type;
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if (http_connect(h, path, local_path, hoststr, auth, proxyauth, &location_changed) < 0)
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goto fail;
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if (s->http_code == 401) {
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if (cur_auth_type == HTTP_AUTH_NONE && s->auth_state.auth_type != HTTP_AUTH_NONE) {
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@ -139,6 +149,14 @@ static int http_open_cnx(URLContext *h)
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} else
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goto fail;
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}
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if (s->http_code == 407) {
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if (cur_proxy_auth_type == HTTP_AUTH_NONE &&
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s->proxy_auth_state.auth_type != HTTP_AUTH_NONE) {
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ffurl_close(hd);
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goto redo;
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} else
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goto fail;
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}
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if ((s->http_code == 301 || s->http_code == 302 || s->http_code == 303 || s->http_code == 307)
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&& location_changed == 1) {
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/* url moved, get next */
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@ -237,7 +255,8 @@ static int process_line(URLContext *h, char *line, int line_count,
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/* error codes are 4xx and 5xx, but regard 401 as a success, so we
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* don't abort until all headers have been parsed. */
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if (s->http_code >= 400 && s->http_code < 600 && (s->http_code != 401
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|| s->auth_state.auth_type != HTTP_AUTH_NONE)) {
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|| s->auth_state.auth_type != HTTP_AUTH_NONE) &&
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(s->http_code != 407 || s->proxy_auth_state.auth_type != HTTP_AUTH_NONE)) {
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end += strspn(end, SPACE_CHARS);
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av_log(h, AV_LOG_WARNING, "HTTP error %d %s\n",
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s->http_code, end);
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@ -278,6 +297,8 @@ static int process_line(URLContext *h, char *line, int line_count,
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ff_http_auth_handle_header(&s->auth_state, tag, p);
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} else if (!av_strcasecmp (tag, "Authentication-Info")) {
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ff_http_auth_handle_header(&s->auth_state, tag, p);
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} else if (!av_strcasecmp (tag, "Proxy-Authenticate")) {
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ff_http_auth_handle_header(&s->proxy_auth_state, tag, p);
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} else if (!av_strcasecmp (tag, "Connection")) {
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if (!strcmp(p, "close"))
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s->willclose = 1;
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@ -294,22 +315,27 @@ static inline int has_header(const char *str, const char *header)
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return av_stristart(str, header + 2, NULL) || av_stristr(str, header);
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}
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static int http_connect(URLContext *h, const char *path, const char *hoststr,
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const char *auth, int *new_location)
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static int http_connect(URLContext *h, const char *path, const char *local_path,
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const char *hoststr, const char *auth,
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const char *proxyauth, int *new_location)
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{
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HTTPContext *s = h->priv_data;
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int post, err;
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char line[1024];
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char headers[1024] = "";
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char *authstr = NULL;
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char *authstr = NULL, *proxyauthstr = NULL;
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int64_t off = s->off;
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int len = 0;
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const char *method;
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/* send http header */
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post = h->flags & AVIO_FLAG_WRITE;
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authstr = ff_http_auth_create_response(&s->auth_state, auth, path,
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post ? "POST" : "GET");
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method = post ? "POST" : "GET";
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authstr = ff_http_auth_create_response(&s->auth_state, auth, local_path,
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method);
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proxyauthstr = ff_http_auth_create_response(&s->proxy_auth_state, proxyauth,
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local_path, method);
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/* set default headers if needed */
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if (!has_header(s->headers, "\r\nUser-Agent: "))
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@ -337,14 +363,17 @@ static int http_connect(URLContext *h, const char *path, const char *hoststr,
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"%s"
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"%s"
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"%s"
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"%s%s"
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"\r\n",
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post ? "POST" : "GET",
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method,
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path,
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post && s->chunked_post ? "Transfer-Encoding: chunked\r\n" : "",
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headers,
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authstr ? authstr : "");
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authstr ? authstr : "",
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proxyauthstr ? "Proxy-" : "", proxyauthstr ? proxyauthstr : "");
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av_freep(&authstr);
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av_freep(&proxyauthstr);
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if (ffurl_write(s->hd, s->buffer, strlen(s->buffer)) < 0)
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return AVERROR(EIO);
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@ -87,7 +87,7 @@ static void choose_qop(char *qop, int size)
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void ff_http_auth_handle_header(HTTPAuthState *state, const char *key,
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const char *value)
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{
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if (!strcmp(key, "WWW-Authenticate")) {
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if (!strcmp(key, "WWW-Authenticate") || !strcmp(key, "Proxy-Authenticate")) {
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const char *p;
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if (av_stristart(value, "Basic ", &p) &&
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state->auth_type <= HTTP_AUTH_BASIC) {
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