diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/url.c | 229 |
1 files changed, 82 insertions, 147 deletions
@@ -2317,46 +2317,55 @@ static CURLcode parse_proxy(struct Curl_easy *data, struct connectdata *conn, char *proxy, curl_proxytype proxytype) { - char *prox_portno; - char *endofprot; - - /* We use 'proxyptr' to point to the proxy name from now on... */ - char *proxyptr; char *portptr; - char *atsign; long port = -1; char *proxyuser = NULL; char *proxypasswd = NULL; + char *host; bool sockstype; + CURLUcode uc; + struct proxy_info *proxyinfo; + CURLU *uhp = curl_url(); + CURLcode result = CURLE_OK; + char *scheme = NULL; - /* We do the proxy host string parsing here. We want the host name and the - * port name. Accept a protocol:// prefix - */ + /* When parsing the proxy, allowing non-supported schemes since we have + these made up ones for proxies. Guess scheme for URLs without it. */ + uc = curl_url_set(uhp, CURLUPART_URL, proxy, + CURLU_NON_SUPPORT_SCHEME|CURLU_GUESS_SCHEME); + if(!uc) { + /* parsed okay as a URL */ + uc = curl_url_get(uhp, CURLUPART_SCHEME, &scheme, 0); + if(uc) { + result = CURLE_OUT_OF_MEMORY; + goto error; + } - /* Parse the protocol part if present */ - endofprot = strstr(proxy, "://"); - if(endofprot) { - proxyptr = endofprot + 3; - if(checkprefix("https", proxy)) + if(strcasecompare("https", scheme)) proxytype = CURLPROXY_HTTPS; - else if(checkprefix("socks5h", proxy)) + else if(strcasecompare("socks5h", scheme)) proxytype = CURLPROXY_SOCKS5_HOSTNAME; - else if(checkprefix("socks5", proxy)) + else if(strcasecompare("socks5", scheme)) proxytype = CURLPROXY_SOCKS5; - else if(checkprefix("socks4a", proxy)) + else if(strcasecompare("socks4a", scheme)) proxytype = CURLPROXY_SOCKS4A; - else if(checkprefix("socks4", proxy) || checkprefix("socks", proxy)) + else if(strcasecompare("socks4", scheme) || + strcasecompare("socks", scheme)) proxytype = CURLPROXY_SOCKS4; - else if(checkprefix("http:", proxy)) + else if(strcasecompare("http", scheme)) ; /* leave it as HTTP or HTTP/1.0 */ else { /* Any other xxx:// reject! */ failf(data, "Unsupported proxy scheme for \'%s\'", proxy); - return CURLE_COULDNT_CONNECT; + result = CURLE_COULDNT_CONNECT; + goto error; } } - else - proxyptr = proxy; /* No xxx:// head: It's a HTTP proxy */ + else { + failf(data, "Unsupported proxy syntax in \'%s\'", proxy); + result = CURLE_COULDNT_RESOLVE_PROXY; + goto error; + } #ifdef USE_SSL if(!(Curl_ssl->supports & SSLSUPP_HTTPS_PROXY)) @@ -2364,93 +2373,44 @@ static CURLcode parse_proxy(struct Curl_easy *data, if(proxytype == CURLPROXY_HTTPS) { failf(data, "Unsupported proxy \'%s\', libcurl is built without the " "HTTPS-proxy support.", proxy); - return CURLE_NOT_BUILT_IN; + result = CURLE_NOT_BUILT_IN; + goto error; } - sockstype = proxytype == CURLPROXY_SOCKS5_HOSTNAME || - proxytype == CURLPROXY_SOCKS5 || - proxytype == CURLPROXY_SOCKS4A || - proxytype == CURLPROXY_SOCKS4; - - /* Is there a username and password given in this proxy url? */ - atsign = strchr(proxyptr, '@'); - if(atsign) { - CURLcode result = - Curl_parse_login_details(proxyptr, atsign - proxyptr, - &proxyuser, &proxypasswd, NULL); - if(result) - return result; - proxyptr = atsign + 1; - } + sockstype = + proxytype == CURLPROXY_SOCKS5_HOSTNAME || + proxytype == CURLPROXY_SOCKS5 || + proxytype == CURLPROXY_SOCKS4A || + proxytype == CURLPROXY_SOCKS4; - /* start scanning for port number at this point */ - portptr = proxyptr; + proxyinfo = sockstype ? &conn->socks_proxy : &conn->http_proxy; + proxyinfo->proxytype = proxytype; - /* detect and extract RFC6874-style IPv6-addresses */ - if(*proxyptr == '[') { - char *ptr = ++proxyptr; /* advance beyond the initial bracket */ - while(*ptr && (ISXDIGIT(*ptr) || (*ptr == ':') || (*ptr == '.'))) - ptr++; - if(*ptr == '%') { - /* There might be a zone identifier */ - if(strncmp("%25", ptr, 3)) - infof(data, "Please URL encode %% as %%25, see RFC 6874.\n"); - ptr++; - /* Allow unreserved characters as defined in RFC 3986 */ - while(*ptr && (ISALPHA(*ptr) || ISXDIGIT(*ptr) || (*ptr == '-') || - (*ptr == '.') || (*ptr == '_') || (*ptr == '~'))) - ptr++; + /* Is there a username and password given in this proxy url? */ + curl_url_get(uhp, CURLUPART_USER, &proxyuser, CURLU_URLDECODE); + curl_url_get(uhp, CURLUPART_PASSWORD, &proxypasswd, CURLU_URLDECODE); + if(proxyuser || proxypasswd) { + Curl_safefree(proxyinfo->user); + proxyinfo->user = proxyuser; + Curl_safefree(proxyinfo->passwd); + if(!proxypasswd) { + proxypasswd = strdup(""); + if(!proxypasswd) { + result = CURLE_OUT_OF_MEMORY; + goto error; + } } - if(*ptr == ']') - /* yeps, it ended nicely with a bracket as well */ - *ptr++ = 0; - else - infof(data, "Invalid IPv6 address format\n"); - portptr = ptr; - /* Note that if this didn't end with a bracket, we still advanced the - * proxyptr first, but I can't see anything wrong with that as no host - * name nor a numeric can legally start with a bracket. - */ + proxyinfo->passwd = proxypasswd; + conn->bits.proxy_user_passwd = TRUE; /* enable it */ } - /* Get port number off proxy.server.com:1080 */ - prox_portno = strchr(portptr, ':'); - if(prox_portno) { - char *endp = NULL; + curl_url_get(uhp, CURLUPART_PORT, &portptr, 0); - *prox_portno = 0x0; /* cut off number from host name */ - prox_portno ++; - /* now set the local port number */ - port = strtol(prox_portno, &endp, 10); - if((endp && *endp && (*endp != '/') && (*endp != ' ')) || - (port < 0) || (port > 65535)) { - /* meant to detect for example invalid IPv6 numerical addresses without - brackets: "2a00:fac0:a000::7:13". Accept a trailing slash only - because we then allow "URL style" with the number followed by a - slash, used in curl test cases already. Space is also an acceptable - terminating symbol. */ - infof(data, "No valid port number in proxy string (%s)\n", - prox_portno); - } - else - conn->port = port; + if(portptr) { + port = strtol(portptr, NULL, 10); + free(portptr); } else { - if(proxyptr[0]=='/') { - /* If the first character in the proxy string is a slash, fail - immediately. The following code will otherwise clear the string which - will lead to code running as if no proxy was set! */ - Curl_safefree(proxyuser); - Curl_safefree(proxypasswd); - return CURLE_COULDNT_RESOLVE_PROXY; - } - - /* without a port number after the host name, some people seem to use - a slash so we strip everything from the first slash */ - atsign = strchr(proxyptr, '/'); - if(atsign) - *atsign = '\0'; /* cut off path part from host name */ - if(data->set.proxyport) /* None given in the proxy string, then get the default one if it is given */ @@ -2462,57 +2422,32 @@ static CURLcode parse_proxy(struct Curl_easy *data, port = CURL_DEFAULT_PROXY_PORT; } } - - if(*proxyptr) { - struct proxy_info *proxyinfo = - sockstype ? &conn->socks_proxy : &conn->http_proxy; - proxyinfo->proxytype = proxytype; - - if(proxyuser) { - /* found user and password, rip them out. note that we are unescaping - them, as there is otherwise no way to have a username or password - with reserved characters like ':' in them. */ - Curl_safefree(proxyinfo->user); - proxyinfo->user = curl_easy_unescape(data, proxyuser, 0, NULL); - Curl_safefree(proxyuser); - - if(!proxyinfo->user) { - Curl_safefree(proxypasswd); - return CURLE_OUT_OF_MEMORY; - } - - Curl_safefree(proxyinfo->passwd); - if(proxypasswd && strlen(proxypasswd) < MAX_CURL_PASSWORD_LENGTH) - proxyinfo->passwd = curl_easy_unescape(data, proxypasswd, 0, NULL); - else - proxyinfo->passwd = strdup(""); - Curl_safefree(proxypasswd); - - if(!proxyinfo->passwd) - return CURLE_OUT_OF_MEMORY; - - conn->bits.proxy_user_passwd = TRUE; /* enable it */ - } - - if(port >= 0) { - proxyinfo->port = port; - if(conn->port < 0 || sockstype || !conn->socks_proxy.host.rawalloc) - conn->port = port; - } - - /* now, clone the cleaned proxy host name */ - Curl_safefree(proxyinfo->host.rawalloc); - proxyinfo->host.rawalloc = strdup(proxyptr); - proxyinfo->host.name = proxyinfo->host.rawalloc; - - if(!proxyinfo->host.rawalloc) - return CURLE_OUT_OF_MEMORY; + if(port >= 0) { + proxyinfo->port = port; + if(conn->port < 0 || sockstype || !conn->socks_proxy.host.rawalloc) + conn->port = port; } - Curl_safefree(proxyuser); - Curl_safefree(proxypasswd); + /* now, clone the proxy host name */ + uc = curl_url_get(uhp, CURLUPART_HOST, &host, CURLU_URLDECODE); + if(uc) { + result = CURLE_OUT_OF_MEMORY; + goto error; + } + Curl_safefree(proxyinfo->host.rawalloc); + proxyinfo->host.rawalloc = host; + if(host[0] == '[') { + /* this is a numerical IPv6, strip off the brackets */ + size_t len = strlen(host); + host[len-1] = 0; /* clear the trailing bracket */ + host++; + } + proxyinfo->host.name = host; - return CURLE_OK; + error: + free(scheme); + curl_url_cleanup(uhp); + return result; } /* |